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drm/i915: Use atomic helpers for computing changed flags
[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_display.c
CommitLineData
79e53945
JB		 1/*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 */
26
618563e3 27#include <linux/dmi.h>
c1c7af60
JB		 28#include <linux/module.h>
29#include <linux/input.h>
79e53945 30#include <linux/i2c.h>
7662c8bd 31#include <linux/kernel.h>
5a0e3ad6 32#include <linux/slab.h>
9cce37f4 33#include <linux/vgaarb.h>
e0dac65e 34#include <drm/drm_edid.h>
760285e7 35#include <drm/drmP.h>
79e53945 36#include "intel_drv.h"
760285e7 37#include <drm/i915_drm.h>
79e53945 38#include "i915_drv.h"
e5510fac 39#include "i915_trace.h"
319c1d42 40#include <drm/drm_atomic.h>
c196e1d6 41#include <drm/drm_atomic_helper.h>
760285e7
DH		 42#include <drm/drm_dp_helper.h>
43#include <drm/drm_crtc_helper.h>
465c120c
MR		 44#include <drm/drm_plane_helper.h>
45#include <drm/drm_rect.h>
c0f372b3 46#include <linux/dma_remapping.h>
79e53945 47
465c120c
MR		 48/* Primary plane formats supported by all gen */
49#define COMMON_PRIMARY_FORMATS \
50 DRM_FORMAT_C8, \
51 DRM_FORMAT_RGB565, \
52 DRM_FORMAT_XRGB8888, \
53 DRM_FORMAT_ARGB8888
54
55/* Primary plane formats for gen <= 3 */
56static const uint32_t intel_primary_formats_gen2[] = {
57 COMMON_PRIMARY_FORMATS,
58 DRM_FORMAT_XRGB1555,
59 DRM_FORMAT_ARGB1555,
60};
61
62/* Primary plane formats for gen >= 4 */
63static const uint32_t intel_primary_formats_gen4[] = {
64 COMMON_PRIMARY_FORMATS, \
65 DRM_FORMAT_XBGR8888,
66 DRM_FORMAT_ABGR8888,
67 DRM_FORMAT_XRGB2101010,
68 DRM_FORMAT_ARGB2101010,
69 DRM_FORMAT_XBGR2101010,
70 DRM_FORMAT_ABGR2101010,
71};
72
3d7d6510
MR		 73/* Cursor formats */
74static const uint32_t intel_cursor_formats[] = {
75 DRM_FORMAT_ARGB8888,
76};
77
6b383a7f 78static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
79e53945 79
f1f644dc 80static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
5cec258b 81 struct intel_crtc_state *pipe_config);
18442d08 82static void ironlake_pch_clock_get(struct intel_crtc *crtc,
5cec258b 83 struct intel_crtc_state *pipe_config);
f1f644dc 84
8c7b5ccb 85static int intel_set_mode(struct drm_crtc *crtc,
83a57153 86 struct drm_atomic_state *state);
eb1bfe80
JB		 87static int intel_framebuffer_init(struct drm_device *dev,
88 struct intel_framebuffer *ifb,
89 struct drm_mode_fb_cmd2 *mode_cmd,
90 struct drm_i915_gem_object *obj);
5b18e57c
DV		 91static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc);
92static void intel_set_pipe_timings(struct intel_crtc *intel_crtc);
29407aab 93static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
f769cd24
VK		 94 struct intel_link_m_n *m_n,
95 struct intel_link_m_n *m2_n2);
29407aab 96static void ironlake_set_pipeconf(struct drm_crtc *crtc);
229fca97
DV		 97static void haswell_set_pipeconf(struct drm_crtc *crtc);
98static void intel_set_pipe_csc(struct drm_crtc *crtc);
d288f65f 99static void vlv_prepare_pll(struct intel_crtc *crtc,
5cec258b 100 const struct intel_crtc_state *pipe_config);
d288f65f 101static void chv_prepare_pll(struct intel_crtc *crtc,
5cec258b 102 const struct intel_crtc_state *pipe_config);
ea2c67bb
MR		 103static void intel_begin_crtc_commit(struct drm_crtc *crtc);
104static void intel_finish_crtc_commit(struct drm_crtc *crtc);
549e2bfb
CK		 105static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
106 struct intel_crtc_state *crtc_state);
5ab7b0b7
ID		 107static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
108 int num_connectors);
ce22dba9
ML		 109static void intel_crtc_enable_planes(struct drm_crtc *crtc);
110static void intel_crtc_disable_planes(struct drm_crtc *crtc);
e7457a9a 111
0e32b39c
DA		 112static struct intel_encoder *intel_find_encoder(struct intel_connector *connector, int pipe)
113{
114 if (!connector->mst_port)
115 return connector->encoder;
116 else
117 return &connector->mst_port->mst_encoders[pipe]->base;
118}
119
79e53945 120typedef struct {
0206e353 121 int min, max;
79e53945
JB		 122} intel_range_t;
123
124typedef struct {
0206e353
AJ		 125 int dot_limit;
126 int p2_slow, p2_fast;
79e53945
JB		 127} intel_p2_t;
128
d4906093
ML		 129typedef struct intel_limit intel_limit_t;
130struct intel_limit {
0206e353
AJ		 131 intel_range_t dot, vco, n, m, m1, m2, p, p1;
132 intel_p2_t p2;
d4906093 133};
79e53945 134
d2acd215
DV		 135int
136intel_pch_rawclk(struct drm_device *dev)
137{
138 struct drm_i915_private *dev_priv = dev->dev_private;
139
140 WARN_ON(!HAS_PCH_SPLIT(dev));
141
142 return I915_READ(PCH_RAWCLK_FREQ) & RAWCLK_FREQ_MASK;
143}
144
021357ac
CW		 145static inline u32 /* units of 100MHz */
146intel_fdi_link_freq(struct drm_device *dev)
147{
8b99e68c
CW		 148 if (IS_GEN5(dev)) {
149 struct drm_i915_private *dev_priv = dev->dev_private;
150 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
151 } else
152 return 27;
021357ac
CW		 153}
154
5d536e28 155static const intel_limit_t intel_limits_i8xx_dac = {
0206e353 156 .dot = { .min = 25000, .max = 350000 },
9c333719 157 .vco = { .min = 908000, .max = 1512000 },
91dbe5fb 158 .n = { .min = 2, .max = 16 },
0206e353
AJ		 159 .m = { .min = 96, .max = 140 },
160 .m1 = { .min = 18, .max = 26 },
161 .m2 = { .min = 6, .max = 16 },
162 .p = { .min = 4, .max = 128 },
163 .p1 = { .min = 2, .max = 33 },
273e27ca
EA		 164 .p2 = { .dot_limit = 165000,
165 .p2_slow = 4, .p2_fast = 2 },
e4b36699
KP		 166};
167
5d536e28
DV		 168static const intel_limit_t intel_limits_i8xx_dvo = {
169 .dot = { .min = 25000, .max = 350000 },
9c333719 170 .vco = { .min = 908000, .max = 1512000 },
91dbe5fb 171 .n = { .min = 2, .max = 16 },
5d536e28
DV		 172 .m = { .min = 96, .max = 140 },
173 .m1 = { .min = 18, .max = 26 },
174 .m2 = { .min = 6, .max = 16 },
175 .p = { .min = 4, .max = 128 },
176 .p1 = { .min = 2, .max = 33 },
177 .p2 = { .dot_limit = 165000,
178 .p2_slow = 4, .p2_fast = 4 },
179};
180
e4b36699 181static const intel_limit_t intel_limits_i8xx_lvds = {
0206e353 182 .dot = { .min = 25000, .max = 350000 },
9c333719 183 .vco = { .min = 908000, .max = 1512000 },
91dbe5fb 184 .n = { .min = 2, .max = 16 },
0206e353
AJ		 185 .m = { .min = 96, .max = 140 },
186 .m1 = { .min = 18, .max = 26 },
187 .m2 = { .min = 6, .max = 16 },
188 .p = { .min = 4, .max = 128 },
189 .p1 = { .min = 1, .max = 6 },
273e27ca
EA		 190 .p2 = { .dot_limit = 165000,
191 .p2_slow = 14, .p2_fast = 7 },
e4b36699 192};
273e27ca 193
e4b36699 194static const intel_limit_t intel_limits_i9xx_sdvo = {
0206e353
AJ		 195 .dot = { .min = 20000, .max = 400000 },
196 .vco = { .min = 1400000, .max = 2800000 },
197 .n = { .min = 1, .max = 6 },
198 .m = { .min = 70, .max = 120 },
4f7dfb67
PJ		 199 .m1 = { .min = 8, .max = 18 },
200 .m2 = { .min = 3, .max = 7 },
0206e353
AJ		 201 .p = { .min = 5, .max = 80 },
202 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 203 .p2 = { .dot_limit = 200000,
204 .p2_slow = 10, .p2_fast = 5 },
e4b36699
KP		 205};
206
207static const intel_limit_t intel_limits_i9xx_lvds = {
0206e353
AJ		 208 .dot = { .min = 20000, .max = 400000 },
209 .vco = { .min = 1400000, .max = 2800000 },
210 .n = { .min = 1, .max = 6 },
211 .m = { .min = 70, .max = 120 },
53a7d2d1
PJ		 212 .m1 = { .min = 8, .max = 18 },
213 .m2 = { .min = 3, .max = 7 },
0206e353
AJ		 214 .p = { .min = 7, .max = 98 },
215 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 216 .p2 = { .dot_limit = 112000,
217 .p2_slow = 14, .p2_fast = 7 },
e4b36699
KP		 218};
219
273e27ca 220
e4b36699 221static const intel_limit_t intel_limits_g4x_sdvo = {
273e27ca
EA		 222 .dot = { .min = 25000, .max = 270000 },
223 .vco = { .min = 1750000, .max = 3500000},
224 .n = { .min = 1, .max = 4 },
225 .m = { .min = 104, .max = 138 },
226 .m1 = { .min = 17, .max = 23 },
227 .m2 = { .min = 5, .max = 11 },
228 .p = { .min = 10, .max = 30 },
229 .p1 = { .min = 1, .max = 3},
230 .p2 = { .dot_limit = 270000,
231 .p2_slow = 10,
232 .p2_fast = 10
044c7c41 233 },
e4b36699
KP		 234};
235
236static const intel_limit_t intel_limits_g4x_hdmi = {
273e27ca
EA		 237 .dot = { .min = 22000, .max = 400000 },
238 .vco = { .min = 1750000, .max = 3500000},
239 .n = { .min = 1, .max = 4 },
240 .m = { .min = 104, .max = 138 },
241 .m1 = { .min = 16, .max = 23 },
242 .m2 = { .min = 5, .max = 11 },
243 .p = { .min = 5, .max = 80 },
244 .p1 = { .min = 1, .max = 8},
245 .p2 = { .dot_limit = 165000,
246 .p2_slow = 10, .p2_fast = 5 },
e4b36699
KP		 247};
248
249static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
273e27ca
EA		 250 .dot = { .min = 20000, .max = 115000 },
251 .vco = { .min = 1750000, .max = 3500000 },
252 .n = { .min = 1, .max = 3 },
253 .m = { .min = 104, .max = 138 },
254 .m1 = { .min = 17, .max = 23 },
255 .m2 = { .min = 5, .max = 11 },
256 .p = { .min = 28, .max = 112 },
257 .p1 = { .min = 2, .max = 8 },
258 .p2 = { .dot_limit = 0,
259 .p2_slow = 14, .p2_fast = 14
044c7c41 260 },
e4b36699
KP		 261};
262
263static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
273e27ca
EA		 264 .dot = { .min = 80000, .max = 224000 },
265 .vco = { .min = 1750000, .max = 3500000 },
266 .n = { .min = 1, .max = 3 },
267 .m = { .min = 104, .max = 138 },
268 .m1 = { .min = 17, .max = 23 },
269 .m2 = { .min = 5, .max = 11 },
270 .p = { .min = 14, .max = 42 },
271 .p1 = { .min = 2, .max = 6 },
272 .p2 = { .dot_limit = 0,
273 .p2_slow = 7, .p2_fast = 7
044c7c41 274 },
e4b36699
KP		 275};
276
f2b115e6 277static const intel_limit_t intel_limits_pineview_sdvo = {
0206e353
AJ		 278 .dot = { .min = 20000, .max = 400000},
279 .vco = { .min = 1700000, .max = 3500000 },
273e27ca 280 /* Pineview's Ncounter is a ring counter */
0206e353
AJ		 281 .n = { .min = 3, .max = 6 },
282 .m = { .min = 2, .max = 256 },
273e27ca 283 /* Pineview only has one combined m divider, which we treat as m2. */
0206e353
AJ		 284 .m1 = { .min = 0, .max = 0 },
285 .m2 = { .min = 0, .max = 254 },
286 .p = { .min = 5, .max = 80 },
287 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 288 .p2 = { .dot_limit = 200000,
289 .p2_slow = 10, .p2_fast = 5 },
e4b36699
KP		 290};
291
f2b115e6 292static const intel_limit_t intel_limits_pineview_lvds = {
0206e353
AJ		 293 .dot = { .min = 20000, .max = 400000 },
294 .vco = { .min = 1700000, .max = 3500000 },
295 .n = { .min = 3, .max = 6 },
296 .m = { .min = 2, .max = 256 },
297 .m1 = { .min = 0, .max = 0 },
298 .m2 = { .min = 0, .max = 254 },
299 .p = { .min = 7, .max = 112 },
300 .p1 = { .min = 1, .max = 8 },
273e27ca
EA		 301 .p2 = { .dot_limit = 112000,
302 .p2_slow = 14, .p2_fast = 14 },
e4b36699
KP		 303};
304
273e27ca
EA		 305/* Ironlake / Sandybridge
306 *
307 * We calculate clock using (register_value + 2) for N/M1/M2, so here
308 * the range value for them is (actual_value - 2).
309 */
b91ad0ec 310static const intel_limit_t intel_limits_ironlake_dac = {
273e27ca
EA		 311 .dot = { .min = 25000, .max = 350000 },
312 .vco = { .min = 1760000, .max = 3510000 },
313 .n = { .min = 1, .max = 5 },
314 .m = { .min = 79, .max = 127 },
315 .m1 = { .min = 12, .max = 22 },
316 .m2 = { .min = 5, .max = 9 },
317 .p = { .min = 5, .max = 80 },
318 .p1 = { .min = 1, .max = 8 },
319 .p2 = { .dot_limit = 225000,
320 .p2_slow = 10, .p2_fast = 5 },
e4b36699
KP		 321};
322
b91ad0ec 323static const intel_limit_t intel_limits_ironlake_single_lvds = {
273e27ca
EA		 324 .dot = { .min = 25000, .max = 350000 },
325 .vco = { .min = 1760000, .max = 3510000 },
326 .n = { .min = 1, .max = 3 },
327 .m = { .min = 79, .max = 118 },
328 .m1 = { .min = 12, .max = 22 },
329 .m2 = { .min = 5, .max = 9 },
330 .p = { .min = 28, .max = 112 },
331 .p1 = { .min = 2, .max = 8 },
332 .p2 = { .dot_limit = 225000,
333 .p2_slow = 14, .p2_fast = 14 },
b91ad0ec
ZW		 334};
335
336static const intel_limit_t intel_limits_ironlake_dual_lvds = {
273e27ca
EA		 337 .dot = { .min = 25000, .max = 350000 },
338 .vco = { .min = 1760000, .max = 3510000 },
339 .n = { .min = 1, .max = 3 },
340 .m = { .min = 79, .max = 127 },
341 .m1 = { .min = 12, .max = 22 },
342 .m2 = { .min = 5, .max = 9 },
343 .p = { .min = 14, .max = 56 },
344 .p1 = { .min = 2, .max = 8 },
345 .p2 = { .dot_limit = 225000,
346 .p2_slow = 7, .p2_fast = 7 },
b91ad0ec
ZW		 347};
348
273e27ca 349/* LVDS 100mhz refclk limits. */
b91ad0ec 350static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
273e27ca
EA		 351 .dot = { .min = 25000, .max = 350000 },
352 .vco = { .min = 1760000, .max = 3510000 },
353 .n = { .min = 1, .max = 2 },
354 .m = { .min = 79, .max = 126 },
355 .m1 = { .min = 12, .max = 22 },
356 .m2 = { .min = 5, .max = 9 },
357 .p = { .min = 28, .max = 112 },
0206e353 358 .p1 = { .min = 2, .max = 8 },
273e27ca
EA		 359 .p2 = { .dot_limit = 225000,
360 .p2_slow = 14, .p2_fast = 14 },
b91ad0ec
ZW		 361};
362
363static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
273e27ca
EA		 364 .dot = { .min = 25000, .max = 350000 },
365 .vco = { .min = 1760000, .max = 3510000 },
366 .n = { .min = 1, .max = 3 },
367 .m = { .min = 79, .max = 126 },
368 .m1 = { .min = 12, .max = 22 },
369 .m2 = { .min = 5, .max = 9 },
370 .p = { .min = 14, .max = 42 },
0206e353 371 .p1 = { .min = 2, .max = 6 },
273e27ca
EA		 372 .p2 = { .dot_limit = 225000,
373 .p2_slow = 7, .p2_fast = 7 },
4547668a
ZY		 374};
375
dc730512 376static const intel_limit_t intel_limits_vlv = {
f01b7962
VS		 377 /*
378 * These are the data rate limits (measured in fast clocks)
379 * since those are the strictest limits we have. The fast
380 * clock and actual rate limits are more relaxed, so checking
381 * them would make no difference.
382 */
383 .dot = { .min = 25000 * 5, .max = 270000 * 5 },
75e53986 384 .vco = { .min = 4000000, .max = 6000000 },
a0c4da24 385 .n = { .min = 1, .max = 7 },
a0c4da24
JB		 386 .m1 = { .min = 2, .max = 3 },
387 .m2 = { .min = 11, .max = 156 },
b99ab663 388 .p1 = { .min = 2, .max = 3 },
5fdc9c49 389 .p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
a0c4da24
JB		 390};
391
ef9348c8
CML		 392static const intel_limit_t intel_limits_chv = {
393 /*
394 * These are the data rate limits (measured in fast clocks)
395 * since those are the strictest limits we have. The fast
396 * clock and actual rate limits are more relaxed, so checking
397 * them would make no difference.
398 */
399 .dot = { .min = 25000 * 5, .max = 540000 * 5},
17fe1021 400 .vco = { .min = 4800000, .max = 6480000 },
ef9348c8
CML		 401 .n = { .min = 1, .max = 1 },
402 .m1 = { .min = 2, .max = 2 },
403 .m2 = { .min = 24 << 22, .max = 175 << 22 },
404 .p1 = { .min = 2, .max = 4 },
405 .p2 = { .p2_slow = 1, .p2_fast = 14 },
406};
407
5ab7b0b7
ID		 408static const intel_limit_t intel_limits_bxt = {
409 /* FIXME: find real dot limits */
410 .dot = { .min = 0, .max = INT_MAX },
411 .vco = { .min = 4800000, .max = 6480000 },
412 .n = { .min = 1, .max = 1 },
413 .m1 = { .min = 2, .max = 2 },
414 /* FIXME: find real m2 limits */
415 .m2 = { .min = 2 << 22, .max = 255 << 22 },
416 .p1 = { .min = 2, .max = 4 },
417 .p2 = { .p2_slow = 1, .p2_fast = 20 },
418};
419
6b4bf1c4
VS		 420static void vlv_clock(int refclk, intel_clock_t *clock)
421{
422 clock->m = clock->m1 * clock->m2;
423 clock->p = clock->p1 * clock->p2;
ed5ca77e
VS		 424 if (WARN_ON(clock->n == 0 || clock->p == 0))
425 return;
fb03ac01
VS		 426 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
427 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
6b4bf1c4
VS		 428}
429
e0638cdf
PZ		 430/**
431 * Returns whether any output on the specified pipe is of the specified type
432 */
4093561b 433bool intel_pipe_has_type(struct intel_crtc *crtc, enum intel_output_type type)
e0638cdf 434{
409ee761 435 struct drm_device *dev = crtc->base.dev;
e0638cdf
PZ		 436 struct intel_encoder *encoder;
437
409ee761 438 for_each_encoder_on_crtc(dev, &crtc->base, encoder)
e0638cdf
PZ		 439 if (encoder->type == type)
440 return true;
441
442 return false;
443}
444
d0737e1d
ACO		 445/**
446 * Returns whether any output on the specified pipe will have the specified
447 * type after a staged modeset is complete, i.e., the same as
448 * intel_pipe_has_type() but looking at encoder->new_crtc instead of
449 * encoder->crtc.
450 */
a93e255f
ACO		 451static bool intel_pipe_will_have_type(const struct intel_crtc_state *crtc_state,
452 int type)
d0737e1d 453{
a93e255f 454 struct drm_atomic_state *state = crtc_state->base.state;
da3ced29 455 struct drm_connector *connector;
a93e255f 456 struct drm_connector_state *connector_state;
d0737e1d 457 struct intel_encoder *encoder;
a93e255f
ACO		 458 int i, num_connectors = 0;
459
da3ced29 460 for_each_connector_in_state(state, connector, connector_state, i) {
a93e255f
ACO		 461 if (connector_state->crtc != crtc_state->base.crtc)
462 continue;
463
464 num_connectors++;
d0737e1d 465
a93e255f
ACO		 466 encoder = to_intel_encoder(connector_state->best_encoder);
467 if (encoder->type == type)
d0737e1d 468 return true;
a93e255f
ACO		 469 }
470
471 WARN_ON(num_connectors == 0);
d0737e1d
ACO		 472
473 return false;
474}
475
a93e255f
ACO		 476static const intel_limit_t *
477intel_ironlake_limit(struct intel_crtc_state *crtc_state, int refclk)
2c07245f 478{
a93e255f 479 struct drm_device *dev = crtc_state->base.crtc->dev;
2c07245f 480 const intel_limit_t *limit;
b91ad0ec 481
a93e255f 482 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
1974cad0 483 if (intel_is_dual_link_lvds(dev)) {
1b894b59 484 if (refclk == 100000)
b91ad0ec
ZW		 485 limit = &intel_limits_ironlake_dual_lvds_100m;
486 else
487 limit = &intel_limits_ironlake_dual_lvds;
488 } else {
1b894b59 489 if (refclk == 100000)
b91ad0ec
ZW		 490 limit = &intel_limits_ironlake_single_lvds_100m;
491 else
492 limit = &intel_limits_ironlake_single_lvds;
493 }
c6bb3538 494 } else
b91ad0ec 495 limit = &intel_limits_ironlake_dac;
2c07245f
ZW		 496
497 return limit;
498}
499
a93e255f
ACO		 500static const intel_limit_t *
501intel_g4x_limit(struct intel_crtc_state *crtc_state)
044c7c41 502{
a93e255f 503 struct drm_device *dev = crtc_state->base.crtc->dev;
044c7c41
ML		 504 const intel_limit_t *limit;
505
a93e255f 506 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
1974cad0 507 if (intel_is_dual_link_lvds(dev))
e4b36699 508 limit = &intel_limits_g4x_dual_channel_lvds;
044c7c41 509 else
e4b36699 510 limit = &intel_limits_g4x_single_channel_lvds;
a93e255f
ACO		 511 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI) ||
512 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
e4b36699 513 limit = &intel_limits_g4x_hdmi;
a93e255f 514 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO)) {
e4b36699 515 limit = &intel_limits_g4x_sdvo;
044c7c41 516 } else /* The option is for other outputs */
e4b36699 517 limit = &intel_limits_i9xx_sdvo;
044c7c41
ML		 518
519 return limit;
520}
521
a93e255f
ACO		 522static const intel_limit_t *
523intel_limit(struct intel_crtc_state *crtc_state, int refclk)
79e53945 524{
a93e255f 525 struct drm_device *dev = crtc_state->base.crtc->dev;
79e53945
JB		 526 const intel_limit_t *limit;
527
5ab7b0b7
ID		 528 if (IS_BROXTON(dev))
529 limit = &intel_limits_bxt;
530 else if (HAS_PCH_SPLIT(dev))
a93e255f 531 limit = intel_ironlake_limit(crtc_state, refclk);
2c07245f 532 else if (IS_G4X(dev)) {
a93e255f 533 limit = intel_g4x_limit(crtc_state);
f2b115e6 534 } else if (IS_PINEVIEW(dev)) {
a93e255f 535 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
f2b115e6 536 limit = &intel_limits_pineview_lvds;
2177832f 537 else
f2b115e6 538 limit = &intel_limits_pineview_sdvo;
ef9348c8
CML		 539 } else if (IS_CHERRYVIEW(dev)) {
540 limit = &intel_limits_chv;
a0c4da24 541 } else if (IS_VALLEYVIEW(dev)) {
dc730512 542 limit = &intel_limits_vlv;
a6c45cf0 543 } else if (!IS_GEN2(dev)) {
a93e255f 544 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
a6c45cf0
CW		 545 limit = &intel_limits_i9xx_lvds;
546 else
547 limit = &intel_limits_i9xx_sdvo;
79e53945 548 } else {
a93e255f 549 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
e4b36699 550 limit = &intel_limits_i8xx_lvds;
a93e255f 551 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
e4b36699 552 limit = &intel_limits_i8xx_dvo;
5d536e28
DV		 553 else
554 limit = &intel_limits_i8xx_dac;
79e53945
JB		 555 }
556 return limit;
557}
558
f2b115e6
AJ		 559/* m1 is reserved as 0 in Pineview, n is a ring counter */
560static void pineview_clock(int refclk, intel_clock_t *clock)
79e53945 561{
2177832f
SL		 562 clock->m = clock->m2 + 2;
563 clock->p = clock->p1 * clock->p2;
ed5ca77e
VS		 564 if (WARN_ON(clock->n == 0 || clock->p == 0))
565 return;
fb03ac01
VS		 566 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
567 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
2177832f
SL		 568}
569
7429e9d4
DV		 570static uint32_t i9xx_dpll_compute_m(struct dpll *dpll)
571{
572 return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
573}
574
ac58c3f0 575static void i9xx_clock(int refclk, intel_clock_t *clock)
2177832f 576{
7429e9d4 577 clock->m = i9xx_dpll_compute_m(clock);
79e53945 578 clock->p = clock->p1 * clock->p2;
ed5ca77e
VS		 579 if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
580 return;
fb03ac01
VS		 581 clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
582 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
79e53945
JB		 583}
584
ef9348c8
CML		 585static void chv_clock(int refclk, intel_clock_t *clock)
586{
587 clock->m = clock->m1 * clock->m2;
588 clock->p = clock->p1 * clock->p2;
589 if (WARN_ON(clock->n == 0 || clock->p == 0))
590 return;
591 clock->vco = DIV_ROUND_CLOSEST_ULL((uint64_t)refclk * clock->m,
592 clock->n << 22);
593 clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
594}
595
7c04d1d9 596#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
79e53945
JB		 597/**
598 * Returns whether the given set of divisors are valid for a given refclk with
599 * the given connectors.
600 */
601
1b894b59
CW		 602static bool intel_PLL_is_valid(struct drm_device *dev,
603 const intel_limit_t *limit,
604 const intel_clock_t *clock)
79e53945 605{
f01b7962
VS		 606 if (clock->n < limit->n.min || limit->n.max < clock->n)
607 INTELPllInvalid("n out of range\n");
79e53945 608 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
0206e353 609 INTELPllInvalid("p1 out of range\n");
79e53945 610 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
0206e353 611 INTELPllInvalid("m2 out of range\n");
79e53945 612 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
0206e353 613 INTELPllInvalid("m1 out of range\n");
f01b7962 614
5ab7b0b7 615 if (!IS_PINEVIEW(dev) && !IS_VALLEYVIEW(dev) && !IS_BROXTON(dev))
f01b7962
VS		 616 if (clock->m1 <= clock->m2)
617 INTELPllInvalid("m1 <= m2\n");
618
5ab7b0b7 619 if (!IS_VALLEYVIEW(dev) && !IS_BROXTON(dev)) {
f01b7962
VS		 620 if (clock->p < limit->p.min || limit->p.max < clock->p)
621 INTELPllInvalid("p out of range\n");
622 if (clock->m < limit->m.min || limit->m.max < clock->m)
623 INTELPllInvalid("m out of range\n");
624 }
625
79e53945 626 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
0206e353 627 INTELPllInvalid("vco out of range\n");
79e53945
JB		 628 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
629 * connector, etc., rather than just a single range.
630 */
631 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
0206e353 632 INTELPllInvalid("dot out of range\n");
79e53945
JB		 633
634 return true;
635}
636
d4906093 637static bool
a93e255f
ACO		 638i9xx_find_best_dpll(const intel_limit_t *limit,
639 struct intel_crtc_state *crtc_state,
cec2f356
SP		 640 int target, int refclk, intel_clock_t *match_clock,
641 intel_clock_t *best_clock)
79e53945 642{
a93e255f 643 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
a919ff14 644 struct drm_device *dev = crtc->base.dev;
79e53945 645 intel_clock_t clock;
79e53945
JB		 646 int err = target;
647
a93e255f 648 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
79e53945 649 /*
a210b028
DV		 650 * For LVDS just rely on its current settings for dual-channel.
651 * We haven't figured out how to reliably set up different
652 * single/dual channel state, if we even can.
79e53945 653 */
1974cad0 654 if (intel_is_dual_link_lvds(dev))
79e53945
JB		 655 clock.p2 = limit->p2.p2_fast;
656 else
657 clock.p2 = limit->p2.p2_slow;
658 } else {
659 if (target < limit->p2.dot_limit)
660 clock.p2 = limit->p2.p2_slow;
661 else
662 clock.p2 = limit->p2.p2_fast;
663 }
664
0206e353 665 memset(best_clock, 0, sizeof(*best_clock));
79e53945 666
42158660
ZY		 667 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
668 clock.m1++) {
669 for (clock.m2 = limit->m2.min;
670 clock.m2 <= limit->m2.max; clock.m2++) {
c0efc387 671 if (clock.m2 >= clock.m1)
42158660
ZY		 672 break;
673 for (clock.n = limit->n.min;
674 clock.n <= limit->n.max; clock.n++) {
675 for (clock.p1 = limit->p1.min;
676 clock.p1 <= limit->p1.max; clock.p1++) {
79e53945
JB		 677 int this_err;
678
ac58c3f0
DV		 679 i9xx_clock(refclk, &clock);
680 if (!intel_PLL_is_valid(dev, limit,
681 &clock))
682 continue;
683 if (match_clock &&
684 clock.p != match_clock->p)
685 continue;
686
687 this_err = abs(clock.dot - target);
688 if (this_err < err) {
689 *best_clock = clock;
690 err = this_err;
691 }
692 }
693 }
694 }
695 }
696
697 return (err != target);
698}
699
700static bool
a93e255f
ACO		 701pnv_find_best_dpll(const intel_limit_t *limit,
702 struct intel_crtc_state *crtc_state,
ee9300bb
DV		 703 int target, int refclk, intel_clock_t *match_clock,
704 intel_clock_t *best_clock)
79e53945 705{
a93e255f 706 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
a919ff14 707 struct drm_device *dev = crtc->base.dev;
79e53945 708 intel_clock_t clock;
79e53945
JB		 709 int err = target;
710
a93e255f 711 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
79e53945 712 /*
a210b028
DV		 713 * For LVDS just rely on its current settings for dual-channel.
714 * We haven't figured out how to reliably set up different
715 * single/dual channel state, if we even can.
79e53945 716 */
1974cad0 717 if (intel_is_dual_link_lvds(dev))
79e53945
JB		 718 clock.p2 = limit->p2.p2_fast;
719 else
720 clock.p2 = limit->p2.p2_slow;
721 } else {
722 if (target < limit->p2.dot_limit)
723 clock.p2 = limit->p2.p2_slow;
724 else
725 clock.p2 = limit->p2.p2_fast;
726 }
727
0206e353 728 memset(best_clock, 0, sizeof(*best_clock));
79e53945 729
42158660
ZY		 730 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
731 clock.m1++) {
732 for (clock.m2 = limit->m2.min;
733 clock.m2 <= limit->m2.max; clock.m2++) {
42158660
ZY		 734 for (clock.n = limit->n.min;
735 clock.n <= limit->n.max; clock.n++) {
736 for (clock.p1 = limit->p1.min;
737 clock.p1 <= limit->p1.max; clock.p1++) {
79e53945
JB		 738 int this_err;
739
ac58c3f0 740 pineview_clock(refclk, &clock);
1b894b59
CW		 741 if (!intel_PLL_is_valid(dev, limit,
742 &clock))
79e53945 743 continue;
cec2f356
SP		 744 if (match_clock &&
745 clock.p != match_clock->p)
746 continue;
79e53945
JB		 747
748 this_err = abs(clock.dot - target);
749 if (this_err < err) {
750 *best_clock = clock;
751 err = this_err;
752 }
753 }
754 }
755 }
756 }
757
758 return (err != target);
759}
760
d4906093 761static bool
a93e255f
ACO		 762g4x_find_best_dpll(const intel_limit_t *limit,
763 struct intel_crtc_state *crtc_state,
ee9300bb
DV		 764 int target, int refclk, intel_clock_t *match_clock,
765 intel_clock_t *best_clock)
d4906093 766{
a93e255f 767 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
a919ff14 768 struct drm_device *dev = crtc->base.dev;
d4906093
ML		 769 intel_clock_t clock;
770 int max_n;
771 bool found;
6ba770dc
AJ		 772 /* approximately equals target * 0.00585 */
773 int err_most = (target >> 8) + (target >> 9);
d4906093
ML		 774 found = false;
775
a93e255f 776 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
1974cad0 777 if (intel_is_dual_link_lvds(dev))
d4906093
ML		 778 clock.p2 = limit->p2.p2_fast;
779 else
780 clock.p2 = limit->p2.p2_slow;
781 } else {
782 if (target < limit->p2.dot_limit)
783 clock.p2 = limit->p2.p2_slow;
784 else
785 clock.p2 = limit->p2.p2_fast;
786 }
787
788 memset(best_clock, 0, sizeof(*best_clock));
789 max_n = limit->n.max;
f77f13e2 790 /* based on hardware requirement, prefer smaller n to precision */
d4906093 791 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
f77f13e2 792 /* based on hardware requirement, prefere larger m1,m2 */
d4906093
ML		 793 for (clock.m1 = limit->m1.max;
794 clock.m1 >= limit->m1.min; clock.m1--) {
795 for (clock.m2 = limit->m2.max;
796 clock.m2 >= limit->m2.min; clock.m2--) {
797 for (clock.p1 = limit->p1.max;
798 clock.p1 >= limit->p1.min; clock.p1--) {
799 int this_err;
800
ac58c3f0 801 i9xx_clock(refclk, &clock);
1b894b59
CW		 802 if (!intel_PLL_is_valid(dev, limit,
803 &clock))
d4906093 804 continue;
1b894b59
CW		 805
806 this_err = abs(clock.dot - target);
d4906093
ML		 807 if (this_err < err_most) {
808 *best_clock = clock;
809 err_most = this_err;
810 max_n = clock.n;
811 found = true;
812 }
813 }
814 }
815 }
816 }
2c07245f
ZW		 817 return found;
818}
819
d5dd62bd
ID		 820/*
821 * Check if the calculated PLL configuration is more optimal compared to the
822 * best configuration and error found so far. Return the calculated error.
823 */
824static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
825 const intel_clock_t *calculated_clock,
826 const intel_clock_t *best_clock,
827 unsigned int best_error_ppm,
828 unsigned int *error_ppm)
829{
9ca3ba01
ID		 830 /*
831 * For CHV ignore the error and consider only the P value.
832 * Prefer a bigger P value based on HW requirements.
833 */
834 if (IS_CHERRYVIEW(dev)) {
835 *error_ppm = 0;
836
837 return calculated_clock->p > best_clock->p;
838 }
839
24be4e46
ID		 840 if (WARN_ON_ONCE(!target_freq))
841 return false;
842
d5dd62bd
ID		 843 *error_ppm = div_u64(1000000ULL *
844 abs(target_freq - calculated_clock->dot),
845 target_freq);
846 /*
847 * Prefer a better P value over a better (smaller) error if the error
848 * is small. Ensure this preference for future configurations too by
849 * setting the error to 0.
850 */
851 if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
852 *error_ppm = 0;
853
854 return true;
855 }
856
857 return *error_ppm + 10 < best_error_ppm;
858}
859
a0c4da24 860static bool
a93e255f
ACO		 861vlv_find_best_dpll(const intel_limit_t *limit,
862 struct intel_crtc_state *crtc_state,
ee9300bb
DV		 863 int target, int refclk, intel_clock_t *match_clock,
864 intel_clock_t *best_clock)
a0c4da24 865{
a93e255f 866 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
a919ff14 867 struct drm_device *dev = crtc->base.dev;
6b4bf1c4 868 intel_clock_t clock;
69e4f900 869 unsigned int bestppm = 1000000;
27e639bf
VS		 870 /* min update 19.2 MHz */
871 int max_n = min(limit->n.max, refclk / 19200);
49e497ef 872 bool found = false;
a0c4da24 873
6b4bf1c4
VS		 874 target *= 5; /* fast clock */
875
876 memset(best_clock, 0, sizeof(*best_clock));
a0c4da24
JB		 877
878 /* based on hardware requirement, prefer smaller n to precision */
27e639bf 879 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
811bbf05 880 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
889059d8 881 for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
c1a9ae43 882 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
6b4bf1c4 883 clock.p = clock.p1 * clock.p2;
a0c4da24 884 /* based on hardware requirement, prefer bigger m1,m2 values */
6b4bf1c4 885 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
d5dd62bd 886 unsigned int ppm;
69e4f900 887
6b4bf1c4
VS		 888 clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
889 refclk * clock.m1);
890
891 vlv_clock(refclk, &clock);
43b0ac53 892
f01b7962
VS		 893 if (!intel_PLL_is_valid(dev, limit,
894 &clock))
43b0ac53
VS		 895 continue;
896
d5dd62bd
ID		 897 if (!vlv_PLL_is_optimal(dev, target,
898 &clock,
899 best_clock,
900 bestppm, &ppm))
901 continue;
6b4bf1c4 902
d5dd62bd
ID		 903 *best_clock = clock;
904 bestppm = ppm;
905 found = true;
a0c4da24
JB		 906 }
907 }
908 }
909 }
a0c4da24 910
49e497ef 911 return found;
a0c4da24 912}
a4fc5ed6 913
ef9348c8 914static bool
a93e255f
ACO		 915chv_find_best_dpll(const intel_limit_t *limit,
916 struct intel_crtc_state *crtc_state,
ef9348c8
CML		 917 int target, int refclk, intel_clock_t *match_clock,
918 intel_clock_t *best_clock)
919{
a93e255f 920 struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
a919ff14 921 struct drm_device *dev = crtc->base.dev;
9ca3ba01 922 unsigned int best_error_ppm;
ef9348c8
CML		 923 intel_clock_t clock;
924 uint64_t m2;
925 int found = false;
926
927 memset(best_clock, 0, sizeof(*best_clock));
9ca3ba01 928 best_error_ppm = 1000000;
ef9348c8
CML		 929
930 /*
931 * Based on hardware doc, the n always set to 1, and m1 always
932 * set to 2. If requires to support 200Mhz refclk, we need to
933 * revisit this because n may not 1 anymore.
934 */
935 clock.n = 1, clock.m1 = 2;
936 target *= 5; /* fast clock */
937
938 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
939 for (clock.p2 = limit->p2.p2_fast;
940 clock.p2 >= limit->p2.p2_slow;
941 clock.p2 -= clock.p2 > 10 ? 2 : 1) {
9ca3ba01 942 unsigned int error_ppm;
ef9348c8
CML		 943
944 clock.p = clock.p1 * clock.p2;
945
946 m2 = DIV_ROUND_CLOSEST_ULL(((uint64_t)target * clock.p *
947 clock.n) << 22, refclk * clock.m1);
948
949 if (m2 > INT_MAX/clock.m1)
950 continue;
951
952 clock.m2 = m2;
953
954 chv_clock(refclk, &clock);
955
956 if (!intel_PLL_is_valid(dev, limit, &clock))
957 continue;
958
9ca3ba01
ID		 959 if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
960 best_error_ppm, &error_ppm))
961 continue;
962
963 *best_clock = clock;
964 best_error_ppm = error_ppm;
965 found = true;
ef9348c8
CML		 966 }
967 }
968
969 return found;
970}
971
5ab7b0b7
ID		 972bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
973 intel_clock_t *best_clock)
974{
975 int refclk = i9xx_get_refclk(crtc_state, 0);
976
977 return chv_find_best_dpll(intel_limit(crtc_state, refclk), crtc_state,
978 target_clock, refclk, NULL, best_clock);
979}
980
20ddf665
VS		 981bool intel_crtc_active(struct drm_crtc *crtc)
982{
983 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
984
985 /* Be paranoid as we can arrive here with only partial
986 * state retrieved from the hardware during setup.
987 *
241bfc38 988 * We can ditch the adjusted_mode.crtc_clock check as soon
20ddf665
VS		 989 * as Haswell has gained clock readout/fastboot support.
990 *
66e514c1 991 * We can ditch the crtc->primary->fb check as soon as we can
20ddf665 992 * properly reconstruct framebuffers.
c3d1f436
MR		 993 *
994 * FIXME: The intel_crtc->active here should be switched to
995 * crtc->state->active once we have proper CRTC states wired up
996 * for atomic.
20ddf665 997 */
c3d1f436 998 return intel_crtc->active && crtc->primary->state->fb &&
6e3c9717 999 intel_crtc->config->base.adjusted_mode.crtc_clock;
20ddf665
VS		 1000}
1001
a5c961d1
PZ		 1002enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
1003 enum pipe pipe)
1004{
1005 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1006 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1007
6e3c9717 1008 return intel_crtc->config->cpu_transcoder;
a5c961d1
PZ		 1009}
1010
fbf49ea2
VS		 1011static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)
1012{
1013 struct drm_i915_private *dev_priv = dev->dev_private;
1014 u32 reg = PIPEDSL(pipe);
1015 u32 line1, line2;
1016 u32 line_mask;
1017
1018 if (IS_GEN2(dev))
1019 line_mask = DSL_LINEMASK_GEN2;
1020 else
1021 line_mask = DSL_LINEMASK_GEN3;
1022
1023 line1 = I915_READ(reg) & line_mask;
1024 mdelay(5);
1025 line2 = I915_READ(reg) & line_mask;
1026
1027 return line1 == line2;
1028}
1029
ab7ad7f6
KP		 1030/*
1031 * intel_wait_for_pipe_off - wait for pipe to turn off
575f7ab7 1032 * @crtc: crtc whose pipe to wait for
9d0498a2
JB		 1033 *
1034 * After disabling a pipe, we can't wait for vblank in the usual way,
1035 * spinning on the vblank interrupt status bit, since we won't actually
1036 * see an interrupt when the pipe is disabled.
1037 *
ab7ad7f6
KP		 1038 * On Gen4 and above:
1039 * wait for the pipe register state bit to turn off
1040 *
1041 * Otherwise:
1042 * wait for the display line value to settle (it usually
1043 * ends up stopping at the start of the next frame).
58e10eb9 1044 *
9d0498a2 1045 */
575f7ab7 1046static void intel_wait_for_pipe_off(struct intel_crtc *crtc)
9d0498a2 1047{
575f7ab7 1048 struct drm_device *dev = crtc->base.dev;
9d0498a2 1049 struct drm_i915_private *dev_priv = dev->dev_private;
6e3c9717 1050 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
575f7ab7 1051 enum pipe pipe = crtc->pipe;
ab7ad7f6
KP		 1052
1053 if (INTEL_INFO(dev)->gen >= 4) {
702e7a56 1054 int reg = PIPECONF(cpu_transcoder);
ab7ad7f6
KP		 1055
1056 /* Wait for the Pipe State to go off */
58e10eb9
CW		 1057 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
1058 100))
284637d9 1059 WARN(1, "pipe_off wait timed out\n");
ab7ad7f6 1060 } else {
ab7ad7f6 1061 /* Wait for the display line to settle */
fbf49ea2 1062 if (wait_for(pipe_dsl_stopped(dev, pipe), 100))
284637d9 1063 WARN(1, "pipe_off wait timed out\n");
ab7ad7f6 1064 }
79e53945
JB		 1065}
1066
b0ea7d37
DL		 1067/*
1068 * ibx_digital_port_connected - is the specified port connected?
1069 * @dev_priv: i915 private structure
1070 * @port: the port to test
1071 *
1072 * Returns true if @port is connected, false otherwise.
1073 */
1074bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
1075 struct intel_digital_port *port)
1076{
1077 u32 bit;
1078
c36346e3 1079 if (HAS_PCH_IBX(dev_priv->dev)) {
eba905b2 1080 switch (port->port) {
c36346e3
DL		 1081 case PORT_B:
1082 bit = SDE_PORTB_HOTPLUG;
1083 break;
1084 case PORT_C:
1085 bit = SDE_PORTC_HOTPLUG;
1086 break;
1087 case PORT_D:
1088 bit = SDE_PORTD_HOTPLUG;
1089 break;
1090 default:
1091 return true;
1092 }
1093 } else {
eba905b2 1094 switch (port->port) {
c36346e3
DL		 1095 case PORT_B:
1096 bit = SDE_PORTB_HOTPLUG_CPT;
1097 break;
1098 case PORT_C:
1099 bit = SDE_PORTC_HOTPLUG_CPT;
1100 break;
1101 case PORT_D:
1102 bit = SDE_PORTD_HOTPLUG_CPT;
1103 break;
1104 default:
1105 return true;
1106 }
b0ea7d37
DL		 1107 }
1108
1109 return I915_READ(SDEISR) & bit;
1110}
1111
b24e7179
JB		 1112static const char *state_string(bool enabled)
1113{
1114 return enabled ? "on" : "off";
1115}
1116
1117/* Only for pre-ILK configs */
55607e8a
DV		 1118void assert_pll(struct drm_i915_private *dev_priv,
1119 enum pipe pipe, bool state)
b24e7179
JB		 1120{
1121 int reg;
1122 u32 val;
1123 bool cur_state;
1124
1125 reg = DPLL(pipe);
1126 val = I915_READ(reg);
1127 cur_state = !!(val & DPLL_VCO_ENABLE);
e2c719b7 1128 I915_STATE_WARN(cur_state != state,
b24e7179
JB		 1129 "PLL state assertion failure (expected %s, current %s)\n",
1130 state_string(state), state_string(cur_state));
1131}
b24e7179 1132
23538ef1
JN		 1133/* XXX: the dsi pll is shared between MIPI DSI ports */
1134static void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
1135{
1136 u32 val;
1137 bool cur_state;
1138
1139 mutex_lock(&dev_priv->dpio_lock);
1140 val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
1141 mutex_unlock(&dev_priv->dpio_lock);
1142
1143 cur_state = val & DSI_PLL_VCO_EN;
e2c719b7 1144 I915_STATE_WARN(cur_state != state,
23538ef1
JN		 1145 "DSI PLL state assertion failure (expected %s, current %s)\n",
1146 state_string(state), state_string(cur_state));
1147}
1148#define assert_dsi_pll_enabled(d) assert_dsi_pll(d, true)
1149#define assert_dsi_pll_disabled(d) assert_dsi_pll(d, false)
1150
55607e8a 1151struct intel_shared_dpll *
e2b78267
DV		 1152intel_crtc_to_shared_dpll(struct intel_crtc *crtc)
1153{
1154 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
1155
6e3c9717 1156 if (crtc->config->shared_dpll < 0)
e2b78267
DV		 1157 return NULL;
1158
6e3c9717 1159 return &dev_priv->shared_dplls[crtc->config->shared_dpll];
e2b78267
DV		 1160}
1161
040484af 1162/* For ILK+ */
55607e8a
DV		 1163void assert_shared_dpll(struct drm_i915_private *dev_priv,
1164 struct intel_shared_dpll *pll,
1165 bool state)
040484af 1166{
040484af 1167 bool cur_state;
5358901f 1168 struct intel_dpll_hw_state hw_state;
040484af 1169
92b27b08 1170 if (WARN (!pll,
46edb027 1171 "asserting DPLL %s with no DPLL\n", state_string(state)))
ee7b9f93 1172 return;
ee7b9f93 1173
5358901f 1174 cur_state = pll->get_hw_state(dev_priv, pll, &hw_state);
e2c719b7 1175 I915_STATE_WARN(cur_state != state,
5358901f
DV		 1176 "%s assertion failure (expected %s, current %s)\n",
1177 pll->name, state_string(state), state_string(cur_state));
040484af 1178}
040484af
JB		 1179
1180static void assert_fdi_tx(struct drm_i915_private *dev_priv,
1181 enum pipe pipe, bool state)
1182{
1183 int reg;
1184 u32 val;
1185 bool cur_state;
ad80a810
PZ		 1186 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1187 pipe);
040484af 1188
affa9354
PZ		 1189 if (HAS_DDI(dev_priv->dev)) {
1190 /* DDI does not have a specific FDI_TX register */
ad80a810 1191 reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
bf507ef7 1192 val = I915_READ(reg);
ad80a810 1193 cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
bf507ef7
ED		 1194 } else {
1195 reg = FDI_TX_CTL(pipe);
1196 val = I915_READ(reg);
1197 cur_state = !!(val & FDI_TX_ENABLE);
1198 }
e2c719b7 1199 I915_STATE_WARN(cur_state != state,
040484af
JB		 1200 "FDI TX state assertion failure (expected %s, current %s)\n",
1201 state_string(state), state_string(cur_state));
1202}
1203#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
1204#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
1205
1206static void assert_fdi_rx(struct drm_i915_private *dev_priv,
1207 enum pipe pipe, bool state)
1208{
1209 int reg;
1210 u32 val;
1211 bool cur_state;
1212
d63fa0dc
PZ		 1213 reg = FDI_RX_CTL(pipe);
1214 val = I915_READ(reg);
1215 cur_state = !!(val & FDI_RX_ENABLE);
e2c719b7 1216 I915_STATE_WARN(cur_state != state,
040484af
JB		 1217 "FDI RX state assertion failure (expected %s, current %s)\n",
1218 state_string(state), state_string(cur_state));
1219}
1220#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
1221#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
1222
1223static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1224 enum pipe pipe)
1225{
1226 int reg;
1227 u32 val;
1228
1229 /* ILK FDI PLL is always enabled */
3d13ef2e 1230 if (INTEL_INFO(dev_priv->dev)->gen == 5)
040484af
JB		 1231 return;
1232
bf507ef7 1233 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
affa9354 1234 if (HAS_DDI(dev_priv->dev))
bf507ef7
ED		 1235 return;
1236
040484af
JB		 1237 reg = FDI_TX_CTL(pipe);
1238 val = I915_READ(reg);
e2c719b7 1239 I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
040484af
JB		 1240}
1241
55607e8a
DV		 1242void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
1243 enum pipe pipe, bool state)
040484af
JB		 1244{
1245 int reg;
1246 u32 val;
55607e8a 1247 bool cur_state;
040484af
JB		 1248
1249 reg = FDI_RX_CTL(pipe);
1250 val = I915_READ(reg);
55607e8a 1251 cur_state = !!(val & FDI_RX_PLL_ENABLE);
e2c719b7 1252 I915_STATE_WARN(cur_state != state,
55607e8a
DV		 1253 "FDI RX PLL assertion failure (expected %s, current %s)\n",
1254 state_string(state), state_string(cur_state));
040484af
JB		 1255}
1256
b680c37a
DV		 1257void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1258 enum pipe pipe)
ea0760cf 1259{
bedd4dba
JN		 1260 struct drm_device *dev = dev_priv->dev;
1261 int pp_reg;
ea0760cf
JB		 1262 u32 val;
1263 enum pipe panel_pipe = PIPE_A;
0de3b485 1264 bool locked = true;
ea0760cf 1265
bedd4dba
JN		 1266 if (WARN_ON(HAS_DDI(dev)))
1267 return;
1268
1269 if (HAS_PCH_SPLIT(dev)) {
1270 u32 port_sel;
1271
ea0760cf 1272 pp_reg = PCH_PP_CONTROL;
bedd4dba
JN		 1273 port_sel = I915_READ(PCH_PP_ON_DELAYS) & PANEL_PORT_SELECT_MASK;
1274
1275 if (port_sel == PANEL_PORT_SELECT_LVDS &&
1276 I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT)
1277 panel_pipe = PIPE_B;
1278 /* XXX: else fix for eDP */
1279 } else if (IS_VALLEYVIEW(dev)) {
1280 /* presumably write lock depends on pipe, not port select */
1281 pp_reg = VLV_PIPE_PP_CONTROL(pipe);
1282 panel_pipe = pipe;
ea0760cf
JB		 1283 } else {
1284 pp_reg = PP_CONTROL;
bedd4dba
JN		 1285 if (I915_READ(LVDS) & LVDS_PIPEB_SELECT)
1286 panel_pipe = PIPE_B;
ea0760cf
JB		 1287 }
1288
1289 val = I915_READ(pp_reg);
1290 if (!(val & PANEL_POWER_ON) ||
ec49ba2d 1291 ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
ea0760cf
JB		 1292 locked = false;
1293
e2c719b7 1294 I915_STATE_WARN(panel_pipe == pipe && locked,
ea0760cf 1295 "panel assertion failure, pipe %c regs locked\n",
9db4a9c7 1296 pipe_name(pipe));
ea0760cf
JB		 1297}
1298
93ce0ba6
JN		 1299static void assert_cursor(struct drm_i915_private *dev_priv,
1300 enum pipe pipe, bool state)
1301{
1302 struct drm_device *dev = dev_priv->dev;
1303 bool cur_state;
1304
d9d82081 1305 if (IS_845G(dev) || IS_I865G(dev))
93ce0ba6 1306 cur_state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
d9d82081 1307 else
5efb3e28 1308 cur_state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
93ce0ba6 1309
e2c719b7 1310 I915_STATE_WARN(cur_state != state,
93ce0ba6
JN		 1311 "cursor on pipe %c assertion failure (expected %s, current %s)\n",
1312 pipe_name(pipe), state_string(state), state_string(cur_state));
1313}
1314#define assert_cursor_enabled(d, p) assert_cursor(d, p, true)
1315#define assert_cursor_disabled(d, p) assert_cursor(d, p, false)
1316
b840d907
JB		 1317void assert_pipe(struct drm_i915_private *dev_priv,
1318 enum pipe pipe, bool state)
b24e7179
JB		 1319{
1320 int reg;
1321 u32 val;
63d7bbe9 1322 bool cur_state;
702e7a56
PZ		 1323 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
1324 pipe);
b24e7179 1325
b6b5d049
VS		 1326 /* if we need the pipe quirk it must be always on */
1327 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1328 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
8e636784
DV		 1329 state = true;
1330
f458ebbc 1331 if (!intel_display_power_is_enabled(dev_priv,
b97186f0 1332 POWER_DOMAIN_TRANSCODER(cpu_transcoder))) {
69310161
PZ		 1333 cur_state = false;
1334 } else {
1335 reg = PIPECONF(cpu_transcoder);
1336 val = I915_READ(reg);
1337 cur_state = !!(val & PIPECONF_ENABLE);
1338 }
1339
e2c719b7 1340 I915_STATE_WARN(cur_state != state,
63d7bbe9 1341 "pipe %c assertion failure (expected %s, current %s)\n",
9db4a9c7 1342 pipe_name(pipe), state_string(state), state_string(cur_state));
b24e7179
JB		 1343}
1344
931872fc
CW		 1345static void assert_plane(struct drm_i915_private *dev_priv,
1346 enum plane plane, bool state)
b24e7179
JB		 1347{
1348 int reg;
1349 u32 val;
931872fc 1350 bool cur_state;
b24e7179
JB		 1351
1352 reg = DSPCNTR(plane);
1353 val = I915_READ(reg);
931872fc 1354 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
e2c719b7 1355 I915_STATE_WARN(cur_state != state,
931872fc
CW		 1356 "plane %c assertion failure (expected %s, current %s)\n",
1357 plane_name(plane), state_string(state), state_string(cur_state));
b24e7179
JB		 1358}
1359
931872fc
CW		 1360#define assert_plane_enabled(d, p) assert_plane(d, p, true)
1361#define assert_plane_disabled(d, p) assert_plane(d, p, false)
1362
b24e7179
JB		 1363static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1364 enum pipe pipe)
1365{
653e1026 1366 struct drm_device *dev = dev_priv->dev;
b24e7179
JB		 1367 int reg, i;
1368 u32 val;
1369 int cur_pipe;
1370
653e1026
VS		 1371 /* Primary planes are fixed to pipes on gen4+ */
1372 if (INTEL_INFO(dev)->gen >= 4) {
28c05794
AJ		 1373 reg = DSPCNTR(pipe);
1374 val = I915_READ(reg);
e2c719b7 1375 I915_STATE_WARN(val & DISPLAY_PLANE_ENABLE,
28c05794
AJ		 1376 "plane %c assertion failure, should be disabled but not\n",
1377 plane_name(pipe));
19ec1358 1378 return;
28c05794 1379 }
19ec1358 1380
b24e7179 1381 /* Need to check both planes against the pipe */
055e393f 1382 for_each_pipe(dev_priv, i) {
b24e7179
JB		 1383 reg = DSPCNTR(i);
1384 val = I915_READ(reg);
1385 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1386 DISPPLANE_SEL_PIPE_SHIFT;
e2c719b7 1387 I915_STATE_WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
9db4a9c7
JB		 1388 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1389 plane_name(i), pipe_name(pipe));
b24e7179
JB		 1390 }
1391}
1392
19332d7a
JB		 1393static void assert_sprites_disabled(struct drm_i915_private *dev_priv,
1394 enum pipe pipe)
1395{
20674eef 1396 struct drm_device *dev = dev_priv->dev;
1fe47785 1397 int reg, sprite;
19332d7a
JB		 1398 u32 val;
1399
7feb8b88 1400 if (INTEL_INFO(dev)->gen >= 9) {
3bdcfc0c 1401 for_each_sprite(dev_priv, pipe, sprite) {
7feb8b88 1402 val = I915_READ(PLANE_CTL(pipe, sprite));
e2c719b7 1403 I915_STATE_WARN(val & PLANE_CTL_ENABLE,
7feb8b88
DL		 1404 "plane %d assertion failure, should be off on pipe %c but is still active\n",
1405 sprite, pipe_name(pipe));
1406 }
1407 } else if (IS_VALLEYVIEW(dev)) {
3bdcfc0c 1408 for_each_sprite(dev_priv, pipe, sprite) {
1fe47785 1409 reg = SPCNTR(pipe, sprite);
20674eef 1410 val = I915_READ(reg);
e2c719b7 1411 I915_STATE_WARN(val & SP_ENABLE,
20674eef 1412 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
1fe47785 1413 sprite_name(pipe, sprite), pipe_name(pipe));
20674eef
VS		 1414 }
1415 } else if (INTEL_INFO(dev)->gen >= 7) {
1416 reg = SPRCTL(pipe);
19332d7a 1417 val = I915_READ(reg);
e2c719b7 1418 I915_STATE_WARN(val & SPRITE_ENABLE,
06da8da2 1419 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
20674eef
VS		 1420 plane_name(pipe), pipe_name(pipe));
1421 } else if (INTEL_INFO(dev)->gen >= 5) {
1422 reg = DVSCNTR(pipe);
19332d7a 1423 val = I915_READ(reg);
e2c719b7 1424 I915_STATE_WARN(val & DVS_ENABLE,
06da8da2 1425 "sprite %c assertion failure, should be off on pipe %c but is still active\n",
20674eef 1426 plane_name(pipe), pipe_name(pipe));
19332d7a
JB		 1427 }
1428}
1429
08c71e5e
VS		 1430static void assert_vblank_disabled(struct drm_crtc *crtc)
1431{
e2c719b7 1432 if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
08c71e5e
VS		 1433 drm_crtc_vblank_put(crtc);
1434}
1435
89eff4be 1436static void ibx_assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
92f2584a
JB		 1437{
1438 u32 val;
1439 bool enabled;
1440
e2c719b7 1441 I915_STATE_WARN_ON(!(HAS_PCH_IBX(dev_priv->dev) || HAS_PCH_CPT(dev_priv->dev)));
9d82aa17 1442
92f2584a
JB		 1443 val = I915_READ(PCH_DREF_CONTROL);
1444 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1445 DREF_SUPERSPREAD_SOURCE_MASK));
e2c719b7 1446 I915_STATE_WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
92f2584a
JB		 1447}
1448
ab9412ba
DV		 1449static void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
1450 enum pipe pipe)
92f2584a
JB		 1451{
1452 int reg;
1453 u32 val;
1454 bool enabled;
1455
ab9412ba 1456 reg = PCH_TRANSCONF(pipe);
92f2584a
JB		 1457 val = I915_READ(reg);
1458 enabled = !!(val & TRANS_ENABLE);
e2c719b7 1459 I915_STATE_WARN(enabled,
9db4a9c7
JB		 1460 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1461 pipe_name(pipe));
92f2584a
JB		 1462}
1463
4e634389
KP		 1464static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1465 enum pipe pipe, u32 port_sel, u32 val)
f0575e92
KP		 1466{
1467 if ((val & DP_PORT_EN) == 0)
1468 return false;
1469
1470 if (HAS_PCH_CPT(dev_priv->dev)) {
1471 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1472 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1473 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1474 return false;
44f37d1f
CML		 1475 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1476 if ((val & DP_PIPE_MASK_CHV) != DP_PIPE_SELECT_CHV(pipe))
1477 return false;
f0575e92
KP		 1478 } else {
1479 if ((val & DP_PIPE_MASK) != (pipe << 30))
1480 return false;
1481 }
1482 return true;
1483}
1484
1519b995
KP		 1485static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1486 enum pipe pipe, u32 val)
1487{
dc0fa718 1488 if ((val & SDVO_ENABLE) == 0)
1519b995
KP		 1489 return false;
1490
1491 if (HAS_PCH_CPT(dev_priv->dev)) {
dc0fa718 1492 if ((val & SDVO_PIPE_SEL_MASK_CPT) != SDVO_PIPE_SEL_CPT(pipe))
1519b995 1493 return false;
44f37d1f
CML		 1494 } else if (IS_CHERRYVIEW(dev_priv->dev)) {
1495 if ((val & SDVO_PIPE_SEL_MASK_CHV) != SDVO_PIPE_SEL_CHV(pipe))
1496 return false;
1519b995 1497 } else {
dc0fa718 1498 if ((val & SDVO_PIPE_SEL_MASK) != SDVO_PIPE_SEL(pipe))
1519b995
KP		 1499 return false;
1500 }
1501 return true;
1502}
1503
1504static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1505 enum pipe pipe, u32 val)
1506{
1507 if ((val & LVDS_PORT_EN) == 0)
1508 return false;
1509
1510 if (HAS_PCH_CPT(dev_priv->dev)) {
1511 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1512 return false;
1513 } else {
1514 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1515 return false;
1516 }
1517 return true;
1518}
1519
1520static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1521 enum pipe pipe, u32 val)
1522{
1523 if ((val & ADPA_DAC_ENABLE) == 0)
1524 return false;
1525 if (HAS_PCH_CPT(dev_priv->dev)) {
1526 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1527 return false;
1528 } else {
1529 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1530 return false;
1531 }
1532 return true;
1533}
1534
291906f1 1535static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
f0575e92 1536 enum pipe pipe, int reg, u32 port_sel)
291906f1 1537{
47a05eca 1538 u32 val = I915_READ(reg);
e2c719b7 1539 I915_STATE_WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
291906f1 1540 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
9db4a9c7 1541 reg, pipe_name(pipe));
de9a35ab 1542
e2c719b7 1543 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & DP_PORT_EN) == 0
75c5da27 1544 && (val & DP_PIPEB_SELECT),
de9a35ab 1545 "IBX PCH dp port still using transcoder B\n");
291906f1
JB		 1546}
1547
1548static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1549 enum pipe pipe, int reg)
1550{
47a05eca 1551 u32 val = I915_READ(reg);
e2c719b7 1552 I915_STATE_WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
23c99e77 1553 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
9db4a9c7 1554 reg, pipe_name(pipe));
de9a35ab 1555
e2c719b7 1556 I915_STATE_WARN(HAS_PCH_IBX(dev_priv->dev) && (val & SDVO_ENABLE) == 0
75c5da27 1557 && (val & SDVO_PIPE_B_SELECT),
de9a35ab 1558 "IBX PCH hdmi port still using transcoder B\n");
291906f1
JB		 1559}
1560
1561static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1562 enum pipe pipe)
1563{
1564 int reg;
1565 u32 val;
291906f1 1566
f0575e92
KP		 1567 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1568 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1569 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
291906f1
JB		 1570
1571 reg = PCH_ADPA;
1572 val = I915_READ(reg);
e2c719b7 1573 I915_STATE_WARN(adpa_pipe_enabled(dev_priv, pipe, val),
291906f1 1574 "PCH VGA enabled on transcoder %c, should be disabled\n",
9db4a9c7 1575 pipe_name(pipe));
291906f1
JB		 1576
1577 reg = PCH_LVDS;
1578 val = I915_READ(reg);
e2c719b7 1579 I915_STATE_WARN(lvds_pipe_enabled(dev_priv, pipe, val),
291906f1 1580 "PCH LVDS enabled on transcoder %c, should be disabled\n",
9db4a9c7 1581 pipe_name(pipe));
291906f1 1582
e2debe91
PZ		 1583 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIB);
1584 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMIC);
1585 assert_pch_hdmi_disabled(dev_priv, pipe, PCH_HDMID);
291906f1
JB		 1586}
1587
40e9cf64
JB		 1588static void intel_init_dpio(struct drm_device *dev)
1589{
1590 struct drm_i915_private *dev_priv = dev->dev_private;
1591
1592 if (!IS_VALLEYVIEW(dev))
1593 return;
1594
a09caddd
CML		 1595 /*
1596 * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C),
1597 * CHV x1 PHY (DP/HDMI D)
1598 * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C)
1599 */
1600 if (IS_CHERRYVIEW(dev)) {
1601 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2;
1602 DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO;
1603 } else {
1604 DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
1605 }
5382f5f3
JB		 1606}
1607
d288f65f 1608static void vlv_enable_pll(struct intel_crtc *crtc,
5cec258b 1609 const struct intel_crtc_state *pipe_config)
87442f73 1610{
426115cf
DV		 1611 struct drm_device *dev = crtc->base.dev;
1612 struct drm_i915_private *dev_priv = dev->dev_private;
1613 int reg = DPLL(crtc->pipe);
d288f65f 1614 u32 dpll = pipe_config->dpll_hw_state.dpll;
87442f73 1615
426115cf 1616 assert_pipe_disabled(dev_priv, crtc->pipe);
87442f73
DV		 1617
1618 /* No really, not for ILK+ */
1619 BUG_ON(!IS_VALLEYVIEW(dev_priv->dev));
1620
1621 /* PLL is protected by panel, make sure we can write it */
6a9e7363 1622 if (IS_MOBILE(dev_priv->dev))
426115cf 1623 assert_panel_unlocked(dev_priv, crtc->pipe);
87442f73 1624
426115cf
DV		 1625 I915_WRITE(reg, dpll);
1626 POSTING_READ(reg);
1627 udelay(150);
1628
1629 if (wait_for(((I915_READ(reg) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
1630 DRM_ERROR("DPLL %d failed to lock\n", crtc->pipe);
1631
d288f65f 1632 I915_WRITE(DPLL_MD(crtc->pipe), pipe_config->dpll_hw_state.dpll_md);
426115cf 1633 POSTING_READ(DPLL_MD(crtc->pipe));
87442f73
DV		 1634
1635 /* We do this three times for luck */
426115cf 1636 I915_WRITE(reg, dpll);
87442f73
DV		 1637 POSTING_READ(reg);
1638 udelay(150); /* wait for warmup */
426115cf 1639 I915_WRITE(reg, dpll);
87442f73
DV		 1640 POSTING_READ(reg);
1641 udelay(150); /* wait for warmup */
426115cf 1642 I915_WRITE(reg, dpll);
87442f73
DV		 1643 POSTING_READ(reg);
1644 udelay(150); /* wait for warmup */
1645}
1646
d288f65f 1647static void chv_enable_pll(struct intel_crtc *crtc,
5cec258b 1648 const struct intel_crtc_state *pipe_config)
9d556c99
CML		 1649{
1650 struct drm_device *dev = crtc->base.dev;
1651 struct drm_i915_private *dev_priv = dev->dev_private;
1652 int pipe = crtc->pipe;
1653 enum dpio_channel port = vlv_pipe_to_channel(pipe);
9d556c99
CML		 1654 u32 tmp;
1655
1656 assert_pipe_disabled(dev_priv, crtc->pipe);
1657
1658 BUG_ON(!IS_CHERRYVIEW(dev_priv->dev));
1659
1660 mutex_lock(&dev_priv->dpio_lock);
1661
1662 /* Enable back the 10bit clock to display controller */
1663 tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1664 tmp |= DPIO_DCLKP_EN;
1665 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
1666
1667 /*
1668 * Need to wait > 100ns between dclkp clock enable bit and PLL enable.
1669 */
1670 udelay(1);
1671
1672 /* Enable PLL */
d288f65f 1673 I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
9d556c99
CML		 1674
1675 /* Check PLL is locked */
a11b0703 1676 if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
9d556c99
CML		 1677 DRM_ERROR("PLL %d failed to lock\n", pipe);
1678
a11b0703 1679 /* not sure when this should be written */
d288f65f 1680 I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
a11b0703
VS		 1681 POSTING_READ(DPLL_MD(pipe));
1682
9d556c99
CML		 1683 mutex_unlock(&dev_priv->dpio_lock);
1684}
1685
1c4e0274
VS		 1686static int intel_num_dvo_pipes(struct drm_device *dev)
1687{
1688 struct intel_crtc *crtc;
1689 int count = 0;
1690
1691 for_each_intel_crtc(dev, crtc)
1692 count += crtc->active &&
409ee761 1693 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO);
1c4e0274
VS		 1694
1695 return count;
1696}
1697
66e3d5c0 1698static void i9xx_enable_pll(struct intel_crtc *crtc)
63d7bbe9 1699{
66e3d5c0
DV		 1700 struct drm_device *dev = crtc->base.dev;
1701 struct drm_i915_private *dev_priv = dev->dev_private;
1702 int reg = DPLL(crtc->pipe);
6e3c9717 1703 u32 dpll = crtc->config->dpll_hw_state.dpll;
63d7bbe9 1704
66e3d5c0 1705 assert_pipe_disabled(dev_priv, crtc->pipe);
58c6eaa2 1706
63d7bbe9 1707 /* No really, not for ILK+ */
3d13ef2e 1708 BUG_ON(INTEL_INFO(dev)->gen >= 5);
63d7bbe9
JB		 1709
1710 /* PLL is protected by panel, make sure we can write it */
66e3d5c0
DV		 1711 if (IS_MOBILE(dev) && !IS_I830(dev))
1712 assert_panel_unlocked(dev_priv, crtc->pipe);
63d7bbe9 1713
1c4e0274
VS		 1714 /* Enable DVO 2x clock on both PLLs if necessary */
1715 if (IS_I830(dev) && intel_num_dvo_pipes(dev) > 0) {
1716 /*
1717 * It appears to be important that we don't enable this
1718 * for the current pipe before otherwise configuring the
1719 * PLL. No idea how this should be handled if multiple
1720 * DVO outputs are enabled simultaneosly.
1721 */
1722 dpll |= DPLL_DVO_2X_MODE;
1723 I915_WRITE(DPLL(!crtc->pipe),
1724 I915_READ(DPLL(!crtc->pipe)) | DPLL_DVO_2X_MODE);
1725 }
66e3d5c0
DV		 1726
1727 /* Wait for the clocks to stabilize. */
1728 POSTING_READ(reg);
1729 udelay(150);
1730
1731 if (INTEL_INFO(dev)->gen >= 4) {
1732 I915_WRITE(DPLL_MD(crtc->pipe),
6e3c9717 1733 crtc->config->dpll_hw_state.dpll_md);
66e3d5c0
DV		 1734 } else {
1735 /* The pixel multiplier can only be updated once the
1736 * DPLL is enabled and the clocks are stable.
1737 *
1738 * So write it again.
1739 */
1740 I915_WRITE(reg, dpll);
1741 }
63d7bbe9
JB		 1742
1743 /* We do this three times for luck */
66e3d5c0 1744 I915_WRITE(reg, dpll);
63d7bbe9
JB		 1745 POSTING_READ(reg);
1746 udelay(150); /* wait for warmup */
66e3d5c0 1747 I915_WRITE(reg, dpll);
63d7bbe9
JB		 1748 POSTING_READ(reg);
1749 udelay(150); /* wait for warmup */
66e3d5c0 1750 I915_WRITE(reg, dpll);
63d7bbe9
JB		 1751 POSTING_READ(reg);
1752 udelay(150); /* wait for warmup */
1753}
1754
1755/**
50b44a44 1756 * i9xx_disable_pll - disable a PLL
63d7bbe9
JB		 1757 * @dev_priv: i915 private structure
1758 * @pipe: pipe PLL to disable
1759 *
1760 * Disable the PLL for @pipe, making sure the pipe is off first.
1761 *
1762 * Note! This is for pre-ILK only.
1763 */
1c4e0274 1764static void i9xx_disable_pll(struct intel_crtc *crtc)
63d7bbe9 1765{
1c4e0274
VS		 1766 struct drm_device *dev = crtc->base.dev;
1767 struct drm_i915_private *dev_priv = dev->dev_private;
1768 enum pipe pipe = crtc->pipe;
1769
1770 /* Disable DVO 2x clock on both PLLs if necessary */
1771 if (IS_I830(dev) &&
409ee761 1772 intel_pipe_has_type(crtc, INTEL_OUTPUT_DVO) &&
1c4e0274
VS		 1773 intel_num_dvo_pipes(dev) == 1) {
1774 I915_WRITE(DPLL(PIPE_B),
1775 I915_READ(DPLL(PIPE_B)) & ~DPLL_DVO_2X_MODE);
1776 I915_WRITE(DPLL(PIPE_A),
1777 I915_READ(DPLL(PIPE_A)) & ~DPLL_DVO_2X_MODE);
1778 }
1779
b6b5d049
VS		 1780 /* Don't disable pipe or pipe PLLs if needed */
1781 if ((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
1782 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
63d7bbe9
JB		 1783 return;
1784
1785 /* Make sure the pipe isn't still relying on us */
1786 assert_pipe_disabled(dev_priv, pipe);
1787
50b44a44
DV		 1788 I915_WRITE(DPLL(pipe), 0);
1789 POSTING_READ(DPLL(pipe));
63d7bbe9
JB		 1790}
1791
f6071166
JB		 1792static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1793{
1794 u32 val = 0;
1795
1796 /* Make sure the pipe isn't still relying on us */
1797 assert_pipe_disabled(dev_priv, pipe);
1798
e5cbfbfb
ID		 1799 /*
1800 * Leave integrated clock source and reference clock enabled for pipe B.
1801 * The latter is needed for VGA hotplug / manual detection.
1802 */
f6071166 1803 if (pipe == PIPE_B)
e5cbfbfb 1804 val = DPLL_INTEGRATED_CRI_CLK_VLV | DPLL_REFA_CLK_ENABLE_VLV;
f6071166
JB		 1805 I915_WRITE(DPLL(pipe), val);
1806 POSTING_READ(DPLL(pipe));
076ed3b2
CML		 1807
1808}
1809
1810static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1811{
d752048d 1812 enum dpio_channel port = vlv_pipe_to_channel(pipe);
076ed3b2
CML		 1813 u32 val;
1814
a11b0703
VS		 1815 /* Make sure the pipe isn't still relying on us */
1816 assert_pipe_disabled(dev_priv, pipe);
076ed3b2 1817
a11b0703 1818 /* Set PLL en = 0 */
d17ec4ce 1819 val = DPLL_SSC_REF_CLOCK_CHV | DPLL_REFA_CLK_ENABLE_VLV;
a11b0703
VS		 1820 if (pipe != PIPE_A)
1821 val |= DPLL_INTEGRATED_CRI_CLK_VLV;
1822 I915_WRITE(DPLL(pipe), val);
1823 POSTING_READ(DPLL(pipe));
d752048d
VS		 1824
1825 mutex_lock(&dev_priv->dpio_lock);
1826
1827 /* Disable 10bit clock to display controller */
1828 val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
1829 val &= ~DPIO_DCLKP_EN;
1830 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
1831
61407f6d
VS		 1832 /* disable left/right clock distribution */
1833 if (pipe != PIPE_B) {
1834 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW5_CH0);
1835 val &= ~(CHV_BUFLEFTENA1_MASK | CHV_BUFRIGHTENA1_MASK);
1836 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW5_CH0, val);
1837 } else {
1838 val = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW1_CH1);
1839 val &= ~(CHV_BUFLEFTENA2_MASK | CHV_BUFRIGHTENA2_MASK);
1840 vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW1_CH1, val);
1841 }
1842
d752048d 1843 mutex_unlock(&dev_priv->dpio_lock);
f6071166
JB		 1844}
1845
e4607fcf
CML		 1846void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
1847 struct intel_digital_port *dport)
89b667f8
JB		 1848{
1849 u32 port_mask;
00fc31b7 1850 int dpll_reg;
89b667f8 1851
e4607fcf
CML		 1852 switch (dport->port) {
1853 case PORT_B:
89b667f8 1854 port_mask = DPLL_PORTB_READY_MASK;
00fc31b7 1855 dpll_reg = DPLL(0);
e4607fcf
CML		 1856 break;
1857 case PORT_C:
89b667f8 1858 port_mask = DPLL_PORTC_READY_MASK;
00fc31b7
CML		 1859 dpll_reg = DPLL(0);
1860 break;
1861 case PORT_D:
1862 port_mask = DPLL_PORTD_READY_MASK;
1863 dpll_reg = DPIO_PHY_STATUS;
e4607fcf
CML		 1864 break;
1865 default:
1866 BUG();
1867 }
89b667f8 1868
00fc31b7 1869 if (wait_for((I915_READ(dpll_reg) & port_mask) == 0, 1000))
89b667f8 1870 WARN(1, "timed out waiting for port %c ready: 0x%08x\n",
00fc31b7 1871 port_name(dport->port), I915_READ(dpll_reg));
89b667f8
JB		 1872}
1873
b14b1055
DV		 1874static void intel_prepare_shared_dpll(struct intel_crtc *crtc)
1875{
1876 struct drm_device *dev = crtc->base.dev;
1877 struct drm_i915_private *dev_priv = dev->dev_private;
1878 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
1879
be19f0ff
CW		 1880 if (WARN_ON(pll == NULL))
1881 return;
1882
3e369b76 1883 WARN_ON(!pll->config.crtc_mask);
b14b1055
DV		 1884 if (pll->active == 0) {
1885 DRM_DEBUG_DRIVER("setting up %s\n", pll->name);
1886 WARN_ON(pll->on);
1887 assert_shared_dpll_disabled(dev_priv, pll);
1888
1889 pll->mode_set(dev_priv, pll);
1890 }
1891}
1892
92f2584a 1893/**
85b3894f 1894 * intel_enable_shared_dpll - enable PCH PLL
92f2584a
JB		 1895 * @dev_priv: i915 private structure
1896 * @pipe: pipe PLL to enable
1897 *
1898 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1899 * drives the transcoder clock.
1900 */
85b3894f 1901static void intel_enable_shared_dpll(struct intel_crtc *crtc)
92f2584a 1902{
3d13ef2e
DL		 1903 struct drm_device *dev = crtc->base.dev;
1904 struct drm_i915_private *dev_priv = dev->dev_private;
e2b78267 1905 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
92f2584a 1906
87a875bb 1907 if (WARN_ON(pll == NULL))
48da64a8
CW		 1908 return;
1909
3e369b76 1910 if (WARN_ON(pll->config.crtc_mask == 0))
48da64a8 1911 return;
ee7b9f93 1912
74dd6928 1913 DRM_DEBUG_KMS("enable %s (active %d, on? %d) for crtc %d\n",
46edb027 1914 pll->name, pll->active, pll->on,
e2b78267 1915 crtc->base.base.id);
92f2584a 1916
cdbd2316
DV		 1917 if (pll->active++) {
1918 WARN_ON(!pll->on);
e9d6944e 1919 assert_shared_dpll_enabled(dev_priv, pll);
ee7b9f93
JB		 1920 return;
1921 }
f4a091c7 1922 WARN_ON(pll->on);
ee7b9f93 1923
bd2bb1b9
PZ		 1924 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
1925
46edb027 1926 DRM_DEBUG_KMS("enabling %s\n", pll->name);
e7b903d2 1927 pll->enable(dev_priv, pll);
ee7b9f93 1928 pll->on = true;
92f2584a
JB		 1929}
1930
f6daaec2 1931static void intel_disable_shared_dpll(struct intel_crtc *crtc)
92f2584a 1932{
3d13ef2e
DL		 1933 struct drm_device *dev = crtc->base.dev;
1934 struct drm_i915_private *dev_priv = dev->dev_private;
e2b78267 1935 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
4c609cb8 1936
92f2584a 1937 /* PCH only available on ILK+ */
3d13ef2e 1938 BUG_ON(INTEL_INFO(dev)->gen < 5);
87a875bb 1939 if (WARN_ON(pll == NULL))
ee7b9f93 1940 return;
92f2584a 1941
3e369b76 1942 if (WARN_ON(pll->config.crtc_mask == 0))
48da64a8 1943 return;
7a419866 1944
46edb027
DV		 1945 DRM_DEBUG_KMS("disable %s (active %d, on? %d) for crtc %d\n",
1946 pll->name, pll->active, pll->on,
e2b78267 1947 crtc->base.base.id);
7a419866 1948
48da64a8 1949 if (WARN_ON(pll->active == 0)) {
e9d6944e 1950 assert_shared_dpll_disabled(dev_priv, pll);
48da64a8
CW		 1951 return;
1952 }
1953
e9d6944e 1954 assert_shared_dpll_enabled(dev_priv, pll);
f4a091c7 1955 WARN_ON(!pll->on);
cdbd2316 1956 if (--pll->active)
7a419866 1957 return;
ee7b9f93 1958
46edb027 1959 DRM_DEBUG_KMS("disabling %s\n", pll->name);
e7b903d2 1960 pll->disable(dev_priv, pll);
ee7b9f93 1961 pll->on = false;
bd2bb1b9
PZ		 1962
1963 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
92f2584a
JB		 1964}
1965
b8a4f404
PZ		 1966static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv,
1967 enum pipe pipe)
040484af 1968{
23670b32 1969 struct drm_device *dev = dev_priv->dev;
7c26e5c6 1970 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
e2b78267 1971 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
23670b32 1972 uint32_t reg, val, pipeconf_val;
040484af
JB		 1973
1974 /* PCH only available on ILK+ */
55522f37 1975 BUG_ON(!HAS_PCH_SPLIT(dev));
040484af
JB		 1976
1977 /* Make sure PCH DPLL is enabled */
e72f9fbf 1978 assert_shared_dpll_enabled(dev_priv,
e9d6944e 1979 intel_crtc_to_shared_dpll(intel_crtc));
040484af
JB		 1980
1981 /* FDI must be feeding us bits for PCH ports */
1982 assert_fdi_tx_enabled(dev_priv, pipe);
1983 assert_fdi_rx_enabled(dev_priv, pipe);
1984
23670b32
DV		 1985 if (HAS_PCH_CPT(dev)) {
1986 /* Workaround: Set the timing override bit before enabling the
1987 * pch transcoder. */
1988 reg = TRANS_CHICKEN2(pipe);
1989 val = I915_READ(reg);
1990 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
1991 I915_WRITE(reg, val);
59c859d6 1992 }
23670b32 1993
ab9412ba 1994 reg = PCH_TRANSCONF(pipe);
040484af 1995 val = I915_READ(reg);
5f7f726d 1996 pipeconf_val = I915_READ(PIPECONF(pipe));
e9bcff5c
JB		 1997
1998 if (HAS_PCH_IBX(dev_priv->dev)) {
1999 /*
2000 * make the BPC in transcoder be consistent with
2001 * that in pipeconf reg.
2002 */
dfd07d72
DV		 2003 val &= ~PIPECONF_BPC_MASK;
2004 val |= pipeconf_val & PIPECONF_BPC_MASK;
e9bcff5c 2005 }
5f7f726d
PZ		 2006
2007 val &= ~TRANS_INTERLACE_MASK;
2008 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
7c26e5c6 2009 if (HAS_PCH_IBX(dev_priv->dev) &&
409ee761 2010 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
7c26e5c6
PZ		 2011 val |= TRANS_LEGACY_INTERLACED_ILK;
2012 else
2013 val |= TRANS_INTERLACED;
5f7f726d
PZ		 2014 else
2015 val |= TRANS_PROGRESSIVE;
2016
040484af
JB		 2017 I915_WRITE(reg, val | TRANS_ENABLE);
2018 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
4bb6f1f3 2019 DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
040484af
JB		 2020}
2021
8fb033d7 2022static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
937bb610 2023 enum transcoder cpu_transcoder)
040484af 2024{
8fb033d7 2025 u32 val, pipeconf_val;
8fb033d7
PZ		 2026
2027 /* PCH only available on ILK+ */
55522f37 2028 BUG_ON(!HAS_PCH_SPLIT(dev_priv->dev));
8fb033d7 2029
8fb033d7 2030 /* FDI must be feeding us bits for PCH ports */
1a240d4d 2031 assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
937bb610 2032 assert_fdi_rx_enabled(dev_priv, TRANSCODER_A);
8fb033d7 2033
223a6fdf
PZ		 2034 /* Workaround: set timing override bit. */
2035 val = I915_READ(_TRANSA_CHICKEN2);
23670b32 2036 val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
223a6fdf
PZ		 2037 I915_WRITE(_TRANSA_CHICKEN2, val);
2038
25f3ef11 2039 val = TRANS_ENABLE;
937bb610 2040 pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
8fb033d7 2041
9a76b1c6
PZ		 2042 if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
2043 PIPECONF_INTERLACED_ILK)
a35f2679 2044 val |= TRANS_INTERLACED;
8fb033d7
PZ		 2045 else
2046 val |= TRANS_PROGRESSIVE;
2047
ab9412ba
DV		 2048 I915_WRITE(LPT_TRANSCONF, val);
2049 if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
937bb610 2050 DRM_ERROR("Failed to enable PCH transcoder\n");
8fb033d7
PZ		 2051}
2052
b8a4f404
PZ		 2053static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
2054 enum pipe pipe)
040484af 2055{
23670b32
DV		 2056 struct drm_device *dev = dev_priv->dev;
2057 uint32_t reg, val;
040484af
JB		 2058
2059 /* FDI relies on the transcoder */
2060 assert_fdi_tx_disabled(dev_priv, pipe);
2061 assert_fdi_rx_disabled(dev_priv, pipe);
2062
291906f1
JB		 2063 /* Ports must be off as well */
2064 assert_pch_ports_disabled(dev_priv, pipe);
2065
ab9412ba 2066 reg = PCH_TRANSCONF(pipe);
040484af
JB		 2067 val = I915_READ(reg);
2068 val &= ~TRANS_ENABLE;
2069 I915_WRITE(reg, val);
2070 /* wait for PCH transcoder off, transcoder state */
2071 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
4bb6f1f3 2072 DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
23670b32
DV		 2073
2074 if (!HAS_PCH_IBX(dev)) {
2075 /* Workaround: Clear the timing override chicken bit again. */
2076 reg = TRANS_CHICKEN2(pipe);
2077 val = I915_READ(reg);
2078 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
2079 I915_WRITE(reg, val);
2080 }
040484af
JB		 2081}
2082
ab4d966c 2083static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
8fb033d7 2084{
8fb033d7
PZ		 2085 u32 val;
2086
ab9412ba 2087 val = I915_READ(LPT_TRANSCONF);
8fb033d7 2088 val &= ~TRANS_ENABLE;
ab9412ba 2089 I915_WRITE(LPT_TRANSCONF, val);
8fb033d7 2090 /* wait for PCH transcoder off, transcoder state */
ab9412ba 2091 if (wait_for((I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE) == 0, 50))
8a52fd9f 2092 DRM_ERROR("Failed to disable PCH transcoder\n");
223a6fdf
PZ		 2093
2094 /* Workaround: clear timing override bit. */
2095 val = I915_READ(_TRANSA_CHICKEN2);
23670b32 2096 val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
223a6fdf 2097 I915_WRITE(_TRANSA_CHICKEN2, val);
040484af
JB		 2098}
2099
b24e7179 2100/**
309cfea8 2101 * intel_enable_pipe - enable a pipe, asserting requirements
0372264a 2102 * @crtc: crtc responsible for the pipe
b24e7179 2103 *
0372264a 2104 * Enable @crtc's pipe, making sure that various hardware specific requirements
b24e7179 2105 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
b24e7179 2106 */
e1fdc473 2107static void intel_enable_pipe(struct intel_crtc *crtc)
b24e7179 2108{
0372264a
PZ		 2109 struct drm_device *dev = crtc->base.dev;
2110 struct drm_i915_private *dev_priv = dev->dev_private;
2111 enum pipe pipe = crtc->pipe;
702e7a56
PZ		 2112 enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
2113 pipe);
1a240d4d 2114 enum pipe pch_transcoder;
b24e7179
JB		 2115 int reg;
2116 u32 val;
2117
58c6eaa2 2118 assert_planes_disabled(dev_priv, pipe);
93ce0ba6 2119 assert_cursor_disabled(dev_priv, pipe);
58c6eaa2
DV		 2120 assert_sprites_disabled(dev_priv, pipe);
2121
681e5811 2122 if (HAS_PCH_LPT(dev_priv->dev))
cc391bbb
PZ		 2123 pch_transcoder = TRANSCODER_A;
2124 else
2125 pch_transcoder = pipe;
2126
b24e7179
JB		 2127 /*
2128 * A pipe without a PLL won't actually be able to drive bits from
2129 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
2130 * need the check.
2131 */
50360403 2132 if (HAS_GMCH_DISPLAY(dev_priv->dev))
409ee761 2133 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DSI))
23538ef1
JN		 2134 assert_dsi_pll_enabled(dev_priv);
2135 else
2136 assert_pll_enabled(dev_priv, pipe);
040484af 2137 else {
6e3c9717 2138 if (crtc->config->has_pch_encoder) {
040484af 2139 /* if driving the PCH, we need FDI enabled */
cc391bbb 2140 assert_fdi_rx_pll_enabled(dev_priv, pch_transcoder);
1a240d4d
DV		 2141 assert_fdi_tx_pll_enabled(dev_priv,
2142 (enum pipe) cpu_transcoder);
040484af
JB		 2143 }
2144 /* FIXME: assert CPU port conditions for SNB+ */
2145 }
b24e7179 2146
702e7a56 2147 reg = PIPECONF(cpu_transcoder);
b24e7179 2148 val = I915_READ(reg);
7ad25d48 2149 if (val & PIPECONF_ENABLE) {
b6b5d049
VS		 2150 WARN_ON(!((pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
2151 (pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE)));
00d70b15 2152 return;
7ad25d48 2153 }
00d70b15
CW		 2154
2155 I915_WRITE(reg, val | PIPECONF_ENABLE);
851855d8 2156 POSTING_READ(reg);
b24e7179
JB		 2157}
2158
2159/**
309cfea8 2160 * intel_disable_pipe - disable a pipe, asserting requirements
575f7ab7 2161 * @crtc: crtc whose pipes is to be disabled
b24e7179 2162 *
575f7ab7
VS		 2163 * Disable the pipe of @crtc, making sure that various hardware
2164 * specific requirements are met, if applicable, e.g. plane
2165 * disabled, panel fitter off, etc.
b24e7179
JB		 2166 *
2167 * Will wait until the pipe has shut down before returning.
2168 */
575f7ab7 2169static void intel_disable_pipe(struct intel_crtc *crtc)
b24e7179 2170{
575f7ab7 2171 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
6e3c9717 2172 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
575f7ab7 2173 enum pipe pipe = crtc->pipe;
b24e7179
JB		 2174 int reg;
2175 u32 val;
2176
2177 /*
2178 * Make sure planes won't keep trying to pump pixels to us,
2179 * or we might hang the display.
2180 */
2181 assert_planes_disabled(dev_priv, pipe);
93ce0ba6 2182 assert_cursor_disabled(dev_priv, pipe);
19332d7a 2183 assert_sprites_disabled(dev_priv, pipe);
b24e7179 2184
702e7a56 2185 reg = PIPECONF(cpu_transcoder);
b24e7179 2186 val = I915_READ(reg);
00d70b15
CW		 2187 if ((val & PIPECONF_ENABLE) == 0)
2188 return;
2189
67adc644
VS		 2190 /*
2191 * Double wide has implications for planes
2192 * so best keep it disabled when not needed.
2193 */
6e3c9717 2194 if (crtc->config->double_wide)
67adc644
VS		 2195 val &= ~PIPECONF_DOUBLE_WIDE;
2196
2197 /* Don't disable pipe or pipe PLLs if needed */
b6b5d049
VS		 2198 if (!(pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) &&
2199 !(pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
67adc644
VS		 2200 val &= ~PIPECONF_ENABLE;
2201
2202 I915_WRITE(reg, val);
2203 if ((val & PIPECONF_ENABLE) == 0)
2204 intel_wait_for_pipe_off(crtc);
b24e7179
JB		 2205}
2206
d74362c9
KP		 2207/*
2208 * Plane regs are double buffered, going from enabled->disabled needs a
2209 * trigger in order to latch. The display address reg provides this.
2210 */
1dba99f4
VS		 2211void intel_flush_primary_plane(struct drm_i915_private *dev_priv,
2212 enum plane plane)
d74362c9 2213{
3d13ef2e
DL		 2214 struct drm_device *dev = dev_priv->dev;
2215 u32 reg = INTEL_INFO(dev)->gen >= 4 ? DSPSURF(plane) : DSPADDR(plane);
1dba99f4
VS		 2216
2217 I915_WRITE(reg, I915_READ(reg));
2218 POSTING_READ(reg);
d74362c9
KP		 2219}
2220
b24e7179 2221/**
262ca2b0 2222 * intel_enable_primary_hw_plane - enable the primary plane on a given pipe
fdd508a6
VS		 2223 * @plane: plane to be enabled
2224 * @crtc: crtc for the plane
b24e7179 2225 *
fdd508a6 2226 * Enable @plane on @crtc, making sure that the pipe is running first.
b24e7179 2227 */
fdd508a6
VS		 2228static void intel_enable_primary_hw_plane(struct drm_plane *plane,
2229 struct drm_crtc *crtc)
b24e7179 2230{
fdd508a6
VS		 2231 struct drm_device *dev = plane->dev;
2232 struct drm_i915_private *dev_priv = dev->dev_private;
2233 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
b24e7179
JB		 2234
2235 /* If the pipe isn't enabled, we can't pump pixels and may hang */
fdd508a6 2236 assert_pipe_enabled(dev_priv, intel_crtc->pipe);
b70709a6 2237 to_intel_plane_state(plane->state)->visible = true;
939c2fe8 2238
fdd508a6
VS		 2239 dev_priv->display.update_primary_plane(crtc, plane->fb,
2240 crtc->x, crtc->y);
b24e7179
JB		 2241}
2242
693db184
CW		 2243static bool need_vtd_wa(struct drm_device *dev)
2244{
2245#ifdef CONFIG_INTEL_IOMMU
2246 if (INTEL_INFO(dev)->gen >= 6 && intel_iommu_gfx_mapped)
2247 return true;
2248#endif
2249 return false;
2250}
2251
50470bb0 2252unsigned int
6761dd31
TU		 2253intel_tile_height(struct drm_device *dev, uint32_t pixel_format,
2254 uint64_t fb_format_modifier)
a57ce0b2 2255{
6761dd31
TU		 2256 unsigned int tile_height;
2257 uint32_t pixel_bytes;
a57ce0b2 2258
b5d0e9bf
DL		 2259 switch (fb_format_modifier) {
2260 case DRM_FORMAT_MOD_NONE:
2261 tile_height = 1;
2262 break;
2263 case I915_FORMAT_MOD_X_TILED:
2264 tile_height = IS_GEN2(dev) ? 16 : 8;
2265 break;
2266 case I915_FORMAT_MOD_Y_TILED:
2267 tile_height = 32;
2268 break;
2269 case I915_FORMAT_MOD_Yf_TILED:
6761dd31
TU		 2270 pixel_bytes = drm_format_plane_cpp(pixel_format, 0);
2271 switch (pixel_bytes) {
b5d0e9bf 2272 default:
6761dd31 2273 case 1:
b5d0e9bf
DL		 2274 tile_height = 64;
2275 break;
6761dd31
TU		 2276 case 2:
2277 case 4:
b5d0e9bf
DL		 2278 tile_height = 32;
2279 break;
6761dd31 2280 case 8:
b5d0e9bf
DL		 2281 tile_height = 16;
2282 break;
6761dd31 2283 case 16:
b5d0e9bf
DL		 2284 WARN_ONCE(1,
2285 "128-bit pixels are not supported for display!");
2286 tile_height = 16;
2287 break;
2288 }
2289 break;
2290 default:
2291 MISSING_CASE(fb_format_modifier);
2292 tile_height = 1;
2293 break;
2294 }
091df6cb 2295
6761dd31
TU		 2296 return tile_height;
2297}
2298
2299unsigned int
2300intel_fb_align_height(struct drm_device *dev, unsigned int height,
2301 uint32_t pixel_format, uint64_t fb_format_modifier)
2302{
2303 return ALIGN(height, intel_tile_height(dev, pixel_format,
2304 fb_format_modifier));
a57ce0b2
JB		 2305}
2306
f64b98cd
TU		 2307static int
2308intel_fill_fb_ggtt_view(struct i915_ggtt_view *view, struct drm_framebuffer *fb,
2309 const struct drm_plane_state *plane_state)
2310{
50470bb0 2311 struct intel_rotation_info *info = &view->rotation_info;
50470bb0 2312
f64b98cd
TU		 2313 *view = i915_ggtt_view_normal;
2314
50470bb0
TU		 2315 if (!plane_state)
2316 return 0;
2317
121920fa 2318 if (!intel_rotation_90_or_270(plane_state->rotation))
50470bb0
TU		 2319 return 0;
2320
9abc4648 2321 *view = i915_ggtt_view_rotated;
50470bb0
TU		 2322
2323 info->height = fb->height;
2324 info->pixel_format = fb->pixel_format;
2325 info->pitch = fb->pitches[0];
2326 info->fb_modifier = fb->modifier[0];
2327
f64b98cd
TU		 2328 return 0;
2329}
2330
127bd2ac 2331int
850c4cdc
TU		 2332intel_pin_and_fence_fb_obj(struct drm_plane *plane,
2333 struct drm_framebuffer *fb,
82bc3b2d 2334 const struct drm_plane_state *plane_state,
a4872ba6 2335 struct intel_engine_cs *pipelined)
6b95a207 2336{
850c4cdc 2337 struct drm_device *dev = fb->dev;
ce453d81 2338 struct drm_i915_private *dev_priv = dev->dev_private;
850c4cdc 2339 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
f64b98cd 2340 struct i915_ggtt_view view;
6b95a207
KH		 2341 u32 alignment;
2342 int ret;
2343
ebcdd39e
MR		 2344 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
2345
7b911adc
TU		 2346 switch (fb->modifier[0]) {
2347 case DRM_FORMAT_MOD_NONE:
1fada4cc
DL		 2348 if (INTEL_INFO(dev)->gen >= 9)
2349 alignment = 256 * 1024;
2350 else if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
534843da 2351 alignment = 128 * 1024;
a6c45cf0 2352 else if (INTEL_INFO(dev)->gen >= 4)
534843da
CW		 2353 alignment = 4 * 1024;
2354 else
2355 alignment = 64 * 1024;
6b95a207 2356 break;
7b911adc 2357 case I915_FORMAT_MOD_X_TILED:
1fada4cc
DL		 2358 if (INTEL_INFO(dev)->gen >= 9)
2359 alignment = 256 * 1024;
2360 else {
2361 /* pin() will align the object as required by fence */
2362 alignment = 0;
2363 }
6b95a207 2364 break;
7b911adc 2365 case I915_FORMAT_MOD_Y_TILED:
1327b9a1
DL		 2366 case I915_FORMAT_MOD_Yf_TILED:
2367 if (WARN_ONCE(INTEL_INFO(dev)->gen < 9,
2368 "Y tiling bo slipped through, driver bug!\n"))
2369 return -EINVAL;
2370 alignment = 1 * 1024 * 1024;
2371 break;
6b95a207 2372 default:
7b911adc
TU		 2373 MISSING_CASE(fb->modifier[0]);
2374 return -EINVAL;
6b95a207
KH		 2375 }
2376
f64b98cd
TU		 2377 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2378 if (ret)
2379 return ret;
2380
693db184
CW		 2381 /* Note that the w/a also requires 64 PTE of padding following the
2382 * bo. We currently fill all unused PTE with the shadow page and so
2383 * we should always have valid PTE following the scanout preventing
2384 * the VT-d warning.
2385 */
2386 if (need_vtd_wa(dev) && alignment < 256 * 1024)
2387 alignment = 256 * 1024;
2388
d6dd6843
PZ		 2389 /*
2390 * Global gtt pte registers are special registers which actually forward
2391 * writes to a chunk of system memory. Which means that there is no risk
2392 * that the register values disappear as soon as we call
2393 * intel_runtime_pm_put(), so it is correct to wrap only the
2394 * pin/unpin/fence and not more.
2395 */
2396 intel_runtime_pm_get(dev_priv);
2397
ce453d81 2398 dev_priv->mm.interruptible = false;
e6617330 2399 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
f64b98cd 2400 &view);
48b956c5 2401 if (ret)
ce453d81 2402 goto err_interruptible;
6b95a207
KH		 2403
2404 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2405 * fence, whereas 965+ only requires a fence if using
2406 * framebuffer compression. For simplicity, we always install
2407 * a fence as the cost is not that onerous.
2408 */
06d98131 2409 ret = i915_gem_object_get_fence(obj);
9a5a53b3
CW		 2410 if (ret)
2411 goto err_unpin;
1690e1eb 2412
9a5a53b3 2413 i915_gem_object_pin_fence(obj);
6b95a207 2414
ce453d81 2415 dev_priv->mm.interruptible = true;
d6dd6843 2416 intel_runtime_pm_put(dev_priv);
6b95a207 2417 return 0;
48b956c5
CW		 2418
2419err_unpin:
f64b98cd 2420 i915_gem_object_unpin_from_display_plane(obj, &view);
ce453d81
CW		 2421err_interruptible:
2422 dev_priv->mm.interruptible = true;
d6dd6843 2423 intel_runtime_pm_put(dev_priv);
48b956c5 2424 return ret;
6b95a207
KH		 2425}
2426
82bc3b2d
TU		 2427static void intel_unpin_fb_obj(struct drm_framebuffer *fb,
2428 const struct drm_plane_state *plane_state)
1690e1eb 2429{
82bc3b2d 2430 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
f64b98cd
TU		 2431 struct i915_ggtt_view view;
2432 int ret;
82bc3b2d 2433
ebcdd39e
MR		 2434 WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
2435
f64b98cd
TU		 2436 ret = intel_fill_fb_ggtt_view(&view, fb, plane_state);
2437 WARN_ONCE(ret, "Couldn't get view from plane state!");
2438
1690e1eb 2439 i915_gem_object_unpin_fence(obj);
f64b98cd 2440 i915_gem_object_unpin_from_display_plane(obj, &view);
1690e1eb
CW		 2441}
2442
c2c75131
DV		 2443/* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel
2444 * is assumed to be a power-of-two. */
bc752862
CW		 2445unsigned long intel_gen4_compute_page_offset(int *x, int *y,
2446 unsigned int tiling_mode,
2447 unsigned int cpp,
2448 unsigned int pitch)
c2c75131 2449{
bc752862
CW		 2450 if (tiling_mode != I915_TILING_NONE) {
2451 unsigned int tile_rows, tiles;
c2c75131 2452
bc752862
CW		 2453 tile_rows = *y / 8;
2454 *y %= 8;
c2c75131 2455
bc752862
CW		 2456 tiles = *x / (512/cpp);
2457 *x %= 512/cpp;
2458
2459 return tile_rows * pitch * 8 + tiles * 4096;
2460 } else {
2461 unsigned int offset;
2462
2463 offset = *y * pitch + *x * cpp;
2464 *y = 0;
2465 *x = (offset & 4095) / cpp;
2466 return offset & -4096;
2467 }
c2c75131
DV		 2468}
2469
b35d63fa 2470static int i9xx_format_to_fourcc(int format)
46f297fb
JB		 2471{
2472 switch (format) {
2473 case DISPPLANE_8BPP:
2474 return DRM_FORMAT_C8;
2475 case DISPPLANE_BGRX555:
2476 return DRM_FORMAT_XRGB1555;
2477 case DISPPLANE_BGRX565:
2478 return DRM_FORMAT_RGB565;
2479 default:
2480 case DISPPLANE_BGRX888:
2481 return DRM_FORMAT_XRGB8888;
2482 case DISPPLANE_RGBX888:
2483 return DRM_FORMAT_XBGR8888;
2484 case DISPPLANE_BGRX101010:
2485 return DRM_FORMAT_XRGB2101010;
2486 case DISPPLANE_RGBX101010:
2487 return DRM_FORMAT_XBGR2101010;
2488 }
2489}
2490
bc8d7dff
DL		 2491static int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
2492{
2493 switch (format) {
2494 case PLANE_CTL_FORMAT_RGB_565:
2495 return DRM_FORMAT_RGB565;
2496 default:
2497 case PLANE_CTL_FORMAT_XRGB_8888:
2498 if (rgb_order) {
2499 if (alpha)
2500 return DRM_FORMAT_ABGR8888;
2501 else
2502 return DRM_FORMAT_XBGR8888;
2503 } else {
2504 if (alpha)
2505 return DRM_FORMAT_ARGB8888;
2506 else
2507 return DRM_FORMAT_XRGB8888;
2508 }
2509 case PLANE_CTL_FORMAT_XRGB_2101010:
2510 if (rgb_order)
2511 return DRM_FORMAT_XBGR2101010;
2512 else
2513 return DRM_FORMAT_XRGB2101010;
2514 }
2515}
2516
5724dbd1 2517static bool
f6936e29
DV		 2518intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
2519 struct intel_initial_plane_config *plane_config)
46f297fb
JB		 2520{
2521 struct drm_device *dev = crtc->base.dev;
2522 struct drm_i915_gem_object *obj = NULL;
2523 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
2d14030b 2524 struct drm_framebuffer *fb = &plane_config->fb->base;
f37b5c2b
DV		 2525 u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
2526 u32 size_aligned = round_up(plane_config->base + plane_config->size,
2527 PAGE_SIZE);
2528
2529 size_aligned -= base_aligned;
46f297fb 2530
ff2652ea
CW		 2531 if (plane_config->size == 0)
2532 return false;
2533
f37b5c2b
DV		 2534 obj = i915_gem_object_create_stolen_for_preallocated(dev,
2535 base_aligned,
2536 base_aligned,
2537 size_aligned);
46f297fb 2538 if (!obj)
484b41dd 2539 return false;
46f297fb 2540
49af449b
DL		 2541 obj->tiling_mode = plane_config->tiling;
2542 if (obj->tiling_mode == I915_TILING_X)
6bf129df 2543 obj->stride = fb->pitches[0];
46f297fb 2544
6bf129df
DL		 2545 mode_cmd.pixel_format = fb->pixel_format;
2546 mode_cmd.width = fb->width;
2547 mode_cmd.height = fb->height;
2548 mode_cmd.pitches[0] = fb->pitches[0];
18c5247e
DV		 2549 mode_cmd.modifier[0] = fb->modifier[0];
2550 mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
46f297fb
JB		 2551
2552 mutex_lock(&dev->struct_mutex);
6bf129df 2553 if (intel_framebuffer_init(dev, to_intel_framebuffer(fb),
484b41dd 2554 &mode_cmd, obj)) {
46f297fb
JB		 2555 DRM_DEBUG_KMS("intel fb init failed\n");
2556 goto out_unref_obj;
2557 }
46f297fb 2558 mutex_unlock(&dev->struct_mutex);
484b41dd 2559
f6936e29 2560 DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
484b41dd 2561 return true;
46f297fb
JB		 2562
2563out_unref_obj:
2564 drm_gem_object_unreference(&obj->base);
2565 mutex_unlock(&dev->struct_mutex);
484b41dd
JB		 2566 return false;
2567}
2568
afd65eb4
MR		 2569/* Update plane->state->fb to match plane->fb after driver-internal updates */
2570static void
2571update_state_fb(struct drm_plane *plane)
2572{
2573 if (plane->fb == plane->state->fb)
2574 return;
2575
2576 if (plane->state->fb)
2577 drm_framebuffer_unreference(plane->state->fb);
2578 plane->state->fb = plane->fb;
2579 if (plane->state->fb)
2580 drm_framebuffer_reference(plane->state->fb);
2581}
2582
5724dbd1 2583static void
f6936e29
DV		 2584intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
2585 struct intel_initial_plane_config *plane_config)
484b41dd
JB		 2586{
2587 struct drm_device *dev = intel_crtc->base.dev;
d9ceb816 2588 struct drm_i915_private *dev_priv = dev->dev_private;
484b41dd
JB		 2589 struct drm_crtc *c;
2590 struct intel_crtc *i;
2ff8fde1 2591 struct drm_i915_gem_object *obj;
88595ac9
DV		 2592 struct drm_plane *primary = intel_crtc->base.primary;
2593 struct drm_framebuffer *fb;
484b41dd 2594
2d14030b 2595 if (!plane_config->fb)
484b41dd
JB		 2596 return;
2597
f6936e29 2598 if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
88595ac9
DV		 2599 fb = &plane_config->fb->base;
2600 goto valid_fb;
f55548b5 2601 }
484b41dd 2602
2d14030b 2603 kfree(plane_config->fb);
484b41dd
JB		 2604
2605 /*
2606 * Failed to alloc the obj, check to see if we should share
2607 * an fb with another CRTC instead
2608 */
70e1e0ec 2609 for_each_crtc(dev, c) {
484b41dd
JB		 2610 i = to_intel_crtc(c);
2611
2612 if (c == &intel_crtc->base)
2613 continue;
2614
2ff8fde1
MR		 2615 if (!i->active)
2616 continue;
2617
88595ac9
DV		 2618 fb = c->primary->fb;
2619 if (!fb)
484b41dd
JB		 2620 continue;
2621
88595ac9 2622 obj = intel_fb_obj(fb);
2ff8fde1 2623 if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
88595ac9
DV		 2624 drm_framebuffer_reference(fb);
2625 goto valid_fb;
484b41dd
JB		 2626 }
2627 }
88595ac9
DV		 2628
2629 return;
2630
2631valid_fb:
2632 obj = intel_fb_obj(fb);
2633 if (obj->tiling_mode != I915_TILING_NONE)
2634 dev_priv->preserve_bios_swizzle = true;
2635
2636 primary->fb = fb;
2637 primary->state->crtc = &intel_crtc->base;
2638 primary->crtc = &intel_crtc->base;
2639 update_state_fb(primary);
2640 obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
46f297fb
JB		 2641}
2642
29b9bde6
DV		 2643static void i9xx_update_primary_plane(struct drm_crtc *crtc,
2644 struct drm_framebuffer *fb,
2645 int x, int y)
81255565
JB		 2646{
2647 struct drm_device *dev = crtc->dev;
2648 struct drm_i915_private *dev_priv = dev->dev_private;
2649 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
b70709a6
ML		 2650 struct drm_plane *primary = crtc->primary;
2651 bool visible = to_intel_plane_state(primary->state)->visible;
c9ba6fad 2652 struct drm_i915_gem_object *obj;
81255565 2653 int plane = intel_crtc->plane;
e506a0c6 2654 unsigned long linear_offset;
81255565 2655 u32 dspcntr;
f45651ba 2656 u32 reg = DSPCNTR(plane);
48404c1e 2657 int pixel_size;
f45651ba 2658
b70709a6 2659 if (!visible || !fb) {
fdd508a6
VS		 2660 I915_WRITE(reg, 0);
2661 if (INTEL_INFO(dev)->gen >= 4)
2662 I915_WRITE(DSPSURF(plane), 0);
2663 else
2664 I915_WRITE(DSPADDR(plane), 0);
2665 POSTING_READ(reg);
2666 return;
2667 }
2668
c9ba6fad
VS		 2669 obj = intel_fb_obj(fb);
2670 if (WARN_ON(obj == NULL))
2671 return;
2672
2673 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2674
f45651ba
VS		 2675 dspcntr = DISPPLANE_GAMMA_ENABLE;
2676
fdd508a6 2677 dspcntr |= DISPLAY_PLANE_ENABLE;
f45651ba
VS		 2678
2679 if (INTEL_INFO(dev)->gen < 4) {
2680 if (intel_crtc->pipe == PIPE_B)
2681 dspcntr |= DISPPLANE_SEL_PIPE_B;
2682
2683 /* pipesrc and dspsize control the size that is scaled from,
2684 * which should always be the user's requested size.
2685 */
2686 I915_WRITE(DSPSIZE(plane),
6e3c9717
ACO		 2687 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2688 (intel_crtc->config->pipe_src_w - 1));
f45651ba 2689 I915_WRITE(DSPPOS(plane), 0);
c14b0485
VS		 2690 } else if (IS_CHERRYVIEW(dev) && plane == PLANE_B) {
2691 I915_WRITE(PRIMSIZE(plane),
6e3c9717
ACO		 2692 ((intel_crtc->config->pipe_src_h - 1) << 16) |
2693 (intel_crtc->config->pipe_src_w - 1));
c14b0485
VS		 2694 I915_WRITE(PRIMPOS(plane), 0);
2695 I915_WRITE(PRIMCNSTALPHA(plane), 0);
f45651ba 2696 }
81255565 2697
57779d06
VS		 2698 switch (fb->pixel_format) {
2699 case DRM_FORMAT_C8:
81255565
JB		 2700 dspcntr |= DISPPLANE_8BPP;
2701 break;
57779d06
VS		 2702 case DRM_FORMAT_XRGB1555:
2703 case DRM_FORMAT_ARGB1555:
2704 dspcntr |= DISPPLANE_BGRX555;
81255565 2705 break;
57779d06
VS		 2706 case DRM_FORMAT_RGB565:
2707 dspcntr |= DISPPLANE_BGRX565;
2708 break;
2709 case DRM_FORMAT_XRGB8888:
2710 case DRM_FORMAT_ARGB8888:
2711 dspcntr |= DISPPLANE_BGRX888;
2712 break;
2713 case DRM_FORMAT_XBGR8888:
2714 case DRM_FORMAT_ABGR8888:
2715 dspcntr |= DISPPLANE_RGBX888;
2716 break;
2717 case DRM_FORMAT_XRGB2101010:
2718 case DRM_FORMAT_ARGB2101010:
2719 dspcntr |= DISPPLANE_BGRX101010;
2720 break;
2721 case DRM_FORMAT_XBGR2101010:
2722 case DRM_FORMAT_ABGR2101010:
2723 dspcntr |= DISPPLANE_RGBX101010;
81255565
JB		 2724 break;
2725 default:
baba133a 2726 BUG();
81255565 2727 }
57779d06 2728
f45651ba
VS		 2729 if (INTEL_INFO(dev)->gen >= 4 &&
2730 obj->tiling_mode != I915_TILING_NONE)
2731 dspcntr |= DISPPLANE_TILED;
81255565 2732
de1aa629
VS		 2733 if (IS_G4X(dev))
2734 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2735
b9897127 2736 linear_offset = y * fb->pitches[0] + x * pixel_size;
81255565 2737
c2c75131
DV		 2738 if (INTEL_INFO(dev)->gen >= 4) {
2739 intel_crtc->dspaddr_offset =
bc752862 2740 intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
b9897127 2741 pixel_size,
bc752862 2742 fb->pitches[0]);
c2c75131
DV		 2743 linear_offset -= intel_crtc->dspaddr_offset;
2744 } else {
e506a0c6 2745 intel_crtc->dspaddr_offset = linear_offset;
c2c75131 2746 }
e506a0c6 2747
8e7d688b 2748 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
48404c1e
SJ		 2749 dspcntr |= DISPPLANE_ROTATE_180;
2750
6e3c9717
ACO		 2751 x += (intel_crtc->config->pipe_src_w - 1);
2752 y += (intel_crtc->config->pipe_src_h - 1);
48404c1e
SJ		 2753
2754 /* Finding the last pixel of the last line of the display
2755 data and adding to linear_offset*/
2756 linear_offset +=
6e3c9717
ACO		 2757 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2758 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
48404c1e
SJ		 2759 }
2760
2761 I915_WRITE(reg, dspcntr);
2762
01f2c773 2763 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
a6c45cf0 2764 if (INTEL_INFO(dev)->gen >= 4) {
85ba7b7d
DV		 2765 I915_WRITE(DSPSURF(plane),
2766 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
5eddb70b 2767 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
e506a0c6 2768 I915_WRITE(DSPLINOFF(plane), linear_offset);
5eddb70b 2769 } else
f343c5f6 2770 I915_WRITE(DSPADDR(plane), i915_gem_obj_ggtt_offset(obj) + linear_offset);
5eddb70b 2771 POSTING_READ(reg);
17638cd6
JB		 2772}
2773
29b9bde6
DV		 2774static void ironlake_update_primary_plane(struct drm_crtc *crtc,
2775 struct drm_framebuffer *fb,
2776 int x, int y)
17638cd6
JB		 2777{
2778 struct drm_device *dev = crtc->dev;
2779 struct drm_i915_private *dev_priv = dev->dev_private;
2780 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
b70709a6
ML		 2781 struct drm_plane *primary = crtc->primary;
2782 bool visible = to_intel_plane_state(primary->state)->visible;
c9ba6fad 2783 struct drm_i915_gem_object *obj;
17638cd6 2784 int plane = intel_crtc->plane;
e506a0c6 2785 unsigned long linear_offset;
17638cd6 2786 u32 dspcntr;
f45651ba 2787 u32 reg = DSPCNTR(plane);
48404c1e 2788 int pixel_size;
f45651ba 2789
b70709a6 2790 if (!visible || !fb) {
fdd508a6
VS		 2791 I915_WRITE(reg, 0);
2792 I915_WRITE(DSPSURF(plane), 0);
2793 POSTING_READ(reg);
2794 return;
2795 }
2796
c9ba6fad
VS		 2797 obj = intel_fb_obj(fb);
2798 if (WARN_ON(obj == NULL))
2799 return;
2800
2801 pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
2802
f45651ba
VS		 2803 dspcntr = DISPPLANE_GAMMA_ENABLE;
2804
fdd508a6 2805 dspcntr |= DISPLAY_PLANE_ENABLE;
f45651ba
VS		 2806
2807 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
2808 dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
17638cd6 2809
57779d06
VS		 2810 switch (fb->pixel_format) {
2811 case DRM_FORMAT_C8:
17638cd6
JB		 2812 dspcntr |= DISPPLANE_8BPP;
2813 break;
57779d06
VS		 2814 case DRM_FORMAT_RGB565:
2815 dspcntr |= DISPPLANE_BGRX565;
17638cd6 2816 break;
57779d06
VS		 2817 case DRM_FORMAT_XRGB8888:
2818 case DRM_FORMAT_ARGB8888:
2819 dspcntr |= DISPPLANE_BGRX888;
2820 break;
2821 case DRM_FORMAT_XBGR8888:
2822 case DRM_FORMAT_ABGR8888:
2823 dspcntr |= DISPPLANE_RGBX888;
2824 break;
2825 case DRM_FORMAT_XRGB2101010:
2826 case DRM_FORMAT_ARGB2101010:
2827 dspcntr |= DISPPLANE_BGRX101010;
2828 break;
2829 case DRM_FORMAT_XBGR2101010:
2830 case DRM_FORMAT_ABGR2101010:
2831 dspcntr |= DISPPLANE_RGBX101010;
17638cd6
JB		 2832 break;
2833 default:
baba133a 2834 BUG();
17638cd6
JB		 2835 }
2836
2837 if (obj->tiling_mode != I915_TILING_NONE)
2838 dspcntr |= DISPPLANE_TILED;
17638cd6 2839
f45651ba 2840 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev))
1f5d76db 2841 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
17638cd6 2842
b9897127 2843 linear_offset = y * fb->pitches[0] + x * pixel_size;
c2c75131 2844 intel_crtc->dspaddr_offset =
bc752862 2845 intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
b9897127 2846 pixel_size,
bc752862 2847 fb->pitches[0]);
c2c75131 2848 linear_offset -= intel_crtc->dspaddr_offset;
8e7d688b 2849 if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180)) {
48404c1e
SJ		 2850 dspcntr |= DISPPLANE_ROTATE_180;
2851
2852 if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
6e3c9717
ACO		 2853 x += (intel_crtc->config->pipe_src_w - 1);
2854 y += (intel_crtc->config->pipe_src_h - 1);
48404c1e
SJ		 2855
2856 /* Finding the last pixel of the last line of the display
2857 data and adding to linear_offset*/
2858 linear_offset +=
6e3c9717
ACO		 2859 (intel_crtc->config->pipe_src_h - 1) * fb->pitches[0] +
2860 (intel_crtc->config->pipe_src_w - 1) * pixel_size;
48404c1e
SJ		 2861 }
2862 }
2863
2864 I915_WRITE(reg, dspcntr);
17638cd6 2865
01f2c773 2866 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
85ba7b7d
DV		 2867 I915_WRITE(DSPSURF(plane),
2868 i915_gem_obj_ggtt_offset(obj) + intel_crtc->dspaddr_offset);
b3dc685e 2869 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
bc1c91eb
DL		 2870 I915_WRITE(DSPOFFSET(plane), (y << 16) | x);
2871 } else {
2872 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2873 I915_WRITE(DSPLINOFF(plane), linear_offset);
2874 }
17638cd6 2875 POSTING_READ(reg);
17638cd6
JB		 2876}
2877
b321803d
DL		 2878u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
2879 uint32_t pixel_format)
2880{
2881 u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
2882
2883 /*
2884 * The stride is either expressed as a multiple of 64 bytes
2885 * chunks for linear buffers or in number of tiles for tiled
2886 * buffers.
2887 */
2888 switch (fb_modifier) {
2889 case DRM_FORMAT_MOD_NONE:
2890 return 64;
2891 case I915_FORMAT_MOD_X_TILED:
2892 if (INTEL_INFO(dev)->gen == 2)
2893 return 128;
2894 return 512;
2895 case I915_FORMAT_MOD_Y_TILED:
2896 /* No need to check for old gens and Y tiling since this is
2897 * about the display engine and those will be blocked before
2898 * we get here.
2899 */
2900 return 128;
2901 case I915_FORMAT_MOD_Yf_TILED:
2902 if (bits_per_pixel == 8)
2903 return 64;
2904 else
2905 return 128;
2906 default:
2907 MISSING_CASE(fb_modifier);
2908 return 64;
2909 }
2910}
2911
121920fa
TU		 2912unsigned long intel_plane_obj_offset(struct intel_plane *intel_plane,
2913 struct drm_i915_gem_object *obj)
2914{
9abc4648 2915 const struct i915_ggtt_view *view = &i915_ggtt_view_normal;
121920fa
TU		 2916
2917 if (intel_rotation_90_or_270(intel_plane->base.state->rotation))
9abc4648 2918 view = &i915_ggtt_view_rotated;
121920fa
TU		 2919
2920 return i915_gem_obj_ggtt_offset_view(obj, view);
2921}
2922
a1b2278e
CK		 2923/*
2924 * This function detaches (aka. unbinds) unused scalers in hardware
2925 */
2926void skl_detach_scalers(struct intel_crtc *intel_crtc)
2927{
2928 struct drm_device *dev;
2929 struct drm_i915_private *dev_priv;
2930 struct intel_crtc_scaler_state *scaler_state;
2931 int i;
2932
2933 if (!intel_crtc || !intel_crtc->config)
2934 return;
2935
2936 dev = intel_crtc->base.dev;
2937 dev_priv = dev->dev_private;
2938 scaler_state = &intel_crtc->config->scaler_state;
2939
2940 /* loop through and disable scalers that aren't in use */
2941 for (i = 0; i < intel_crtc->num_scalers; i++) {
2942 if (!scaler_state->scalers[i].in_use) {
2943 I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, i), 0);
2944 I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, i), 0);
2945 I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, i), 0);
2946 DRM_DEBUG_KMS("CRTC:%d Disabled scaler id %u.%u\n",
2947 intel_crtc->base.base.id, intel_crtc->pipe, i);
2948 }
2949 }
2950}
2951
6156a456 2952u32 skl_plane_ctl_format(uint32_t pixel_format)
70d21f0e 2953{
6156a456
CK		 2954 u32 plane_ctl_format = 0;
2955 switch (pixel_format) {
70d21f0e 2956 case DRM_FORMAT_RGB565:
6156a456 2957 plane_ctl_format = PLANE_CTL_FORMAT_RGB_565;
f75fb42a 2958 break;
70d21f0e 2959 case DRM_FORMAT_XBGR8888:
6156a456
CK		 2960 plane_ctl_format = PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
2961 break;
2962 case DRM_FORMAT_XRGB8888:
2963 plane_ctl_format = PLANE_CTL_FORMAT_XRGB_8888;
70d21f0e 2964 break;
6156a456
CK		 2965 /*
2966 * XXX: For ARBG/ABGR formats we default to expecting scanout buffers
2967 * to be already pre-multiplied. We need to add a knob (or a different
2968 * DRM_FORMAT) for user-space to configure that.
2969 */
f75fb42a 2970 case DRM_FORMAT_ABGR8888:
6156a456
CK		 2971 plane_ctl_format = PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX |
2972 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
2973 break;
2974 case DRM_FORMAT_ARGB8888:
2975 plane_ctl_format = PLANE_CTL_FORMAT_XRGB_8888 |
2976 PLANE_CTL_ALPHA_SW_PREMULTIPLY;
f75fb42a 2977 break;
70d21f0e 2978 case DRM_FORMAT_XRGB2101010:
6156a456 2979 plane_ctl_format = PLANE_CTL_FORMAT_XRGB_2101010;
70d21f0e
DL		 2980 break;
2981 case DRM_FORMAT_XBGR2101010:
6156a456
CK		 2982 plane_ctl_format = PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
2983 break;
2984 case DRM_FORMAT_YUYV:
2985 plane_ctl_format = PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
2986 break;
2987 case DRM_FORMAT_YVYU:
2988 plane_ctl_format = PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
2989 break;
2990 case DRM_FORMAT_UYVY:
2991 plane_ctl_format = PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
2992 break;
2993 case DRM_FORMAT_VYUY:
2994 plane_ctl_format = PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
70d21f0e
DL		 2995 break;
2996 default:
2997 BUG();
2998 }
6156a456
CK		 2999 return plane_ctl_format;
3000}
70d21f0e 3001
6156a456
CK		 3002u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
3003{
3004 u32 plane_ctl_tiling = 0;
3005 switch (fb_modifier) {
30af77c4 3006 case DRM_FORMAT_MOD_NONE:
70d21f0e 3007 break;
30af77c4 3008 case I915_FORMAT_MOD_X_TILED:
6156a456 3009 plane_ctl_tiling = PLANE_CTL_TILED_X;
b321803d
DL		 3010 break;
3011 case I915_FORMAT_MOD_Y_TILED:
6156a456 3012 plane_ctl_tiling = PLANE_CTL_TILED_Y;
b321803d
DL		 3013 break;
3014 case I915_FORMAT_MOD_Yf_TILED:
6156a456 3015 plane_ctl_tiling = PLANE_CTL_TILED_YF;
70d21f0e
DL		 3016 break;
3017 default:
6156a456 3018 MISSING_CASE(fb_modifier);
70d21f0e 3019 }
6156a456
CK		 3020 return plane_ctl_tiling;
3021}
70d21f0e 3022
6156a456
CK		 3023u32 skl_plane_ctl_rotation(unsigned int rotation)
3024{
3025 u32 plane_ctl_rotation = 0;
3b7a5119 3026 switch (rotation) {
6156a456
CK		 3027 case BIT(DRM_ROTATE_0):
3028 break;
3b7a5119 3029 case BIT(DRM_ROTATE_90):
6156a456 3030 plane_ctl_rotation = PLANE_CTL_ROTATE_90;
3b7a5119 3031 break;
3b7a5119 3032 case BIT(DRM_ROTATE_180):
6156a456 3033 plane_ctl_rotation = PLANE_CTL_ROTATE_180;
3b7a5119 3034 break;
3b7a5119 3035 case BIT(DRM_ROTATE_270):
6156a456 3036 plane_ctl_rotation = PLANE_CTL_ROTATE_270;
3b7a5119 3037 break;
6156a456
CK		 3038 default:
3039 MISSING_CASE(rotation);
3040 }
3041
3042 return plane_ctl_rotation;
3043}
3044
3045static void skylake_update_primary_plane(struct drm_crtc *crtc,
3046 struct drm_framebuffer *fb,
3047 int x, int y)
3048{
3049 struct drm_device *dev = crtc->dev;
3050 struct drm_i915_private *dev_priv = dev->dev_private;
3051 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
b70709a6
ML		 3052 struct drm_plane *plane = crtc->primary;
3053 bool visible = to_intel_plane_state(plane->state)->visible;
6156a456
CK		 3054 struct drm_i915_gem_object *obj;
3055 int pipe = intel_crtc->pipe;
3056 u32 plane_ctl, stride_div, stride;
3057 u32 tile_height, plane_offset, plane_size;
3058 unsigned int rotation;
3059 int x_offset, y_offset;
3060 unsigned long surf_addr;
6156a456
CK		 3061 struct intel_crtc_state *crtc_state = intel_crtc->config;
3062 struct intel_plane_state *plane_state;
3063 int src_x = 0, src_y = 0, src_w = 0, src_h = 0;
3064 int dst_x = 0, dst_y = 0, dst_w = 0, dst_h = 0;
3065 int scaler_id = -1;
3066
6156a456
CK		 3067 plane_state = to_intel_plane_state(plane->state);
3068
b70709a6 3069 if (!visible || !fb) {
6156a456
CK		 3070 I915_WRITE(PLANE_CTL(pipe, 0), 0);
3071 I915_WRITE(PLANE_SURF(pipe, 0), 0);
3072 POSTING_READ(PLANE_CTL(pipe, 0));
3073 return;
3b7a5119 3074 }
70d21f0e 3075
6156a456
CK		 3076 plane_ctl = PLANE_CTL_ENABLE |
3077 PLANE_CTL_PIPE_GAMMA_ENABLE |
3078 PLANE_CTL_PIPE_CSC_ENABLE;
3079
3080 plane_ctl |= skl_plane_ctl_format(fb->pixel_format);
3081 plane_ctl |= skl_plane_ctl_tiling(fb->modifier[0]);
3082 plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
3083
3084 rotation = plane->state->rotation;
3085 plane_ctl |= skl_plane_ctl_rotation(rotation);
3086
b321803d
DL		 3087 obj = intel_fb_obj(fb);
3088 stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
3089 fb->pixel_format);
3b7a5119
SJ		 3090 surf_addr = intel_plane_obj_offset(to_intel_plane(plane), obj);
3091
6156a456
CK		 3092 /*
3093 * FIXME: intel_plane_state->src, dst aren't set when transitional
3094 * update_plane helpers are called from legacy paths.
3095 * Once full atomic crtc is available, below check can be avoided.
3096 */
3097 if (drm_rect_width(&plane_state->src)) {
3098 scaler_id = plane_state->scaler_id;
3099 src_x = plane_state->src.x1 >> 16;
3100 src_y = plane_state->src.y1 >> 16;
3101 src_w = drm_rect_width(&plane_state->src) >> 16;
3102 src_h = drm_rect_height(&plane_state->src) >> 16;
3103 dst_x = plane_state->dst.x1;
3104 dst_y = plane_state->dst.y1;
3105 dst_w = drm_rect_width(&plane_state->dst);
3106 dst_h = drm_rect_height(&plane_state->dst);
3107
3108 WARN_ON(x != src_x || y != src_y);
3109 } else {
3110 src_w = intel_crtc->config->pipe_src_w;
3111 src_h = intel_crtc->config->pipe_src_h;
3112 }
3113
3b7a5119
SJ		 3114 if (intel_rotation_90_or_270(rotation)) {
3115 /* stride = Surface height in tiles */
3116 tile_height = intel_tile_height(dev, fb->bits_per_pixel,
3117 fb->modifier[0]);
3118 stride = DIV_ROUND_UP(fb->height, tile_height);
6156a456 3119 x_offset = stride * tile_height - y - src_h;
3b7a5119 3120 y_offset = x;
6156a456 3121 plane_size = (src_w - 1) << 16 | (src_h - 1);
3b7a5119
SJ		 3122 } else {
3123 stride = fb->pitches[0] / stride_div;
3124 x_offset = x;
3125 y_offset = y;
6156a456 3126 plane_size = (src_h - 1) << 16 | (src_w - 1);
3b7a5119
SJ		 3127 }
3128 plane_offset = y_offset << 16 | x_offset;
b321803d 3129
70d21f0e 3130 I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
3b7a5119
SJ		 3131 I915_WRITE(PLANE_OFFSET(pipe, 0), plane_offset);
3132 I915_WRITE(PLANE_SIZE(pipe, 0), plane_size);
3133 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
6156a456
CK		 3134
3135 if (scaler_id >= 0) {
3136 uint32_t ps_ctrl = 0;
3137
3138 WARN_ON(!dst_w || !dst_h);
3139 ps_ctrl = PS_SCALER_EN | PS_PLANE_SEL(0) |
3140 crtc_state->scaler_state.scalers[scaler_id].mode;
3141 I915_WRITE(SKL_PS_CTRL(pipe, scaler_id), ps_ctrl);
3142 I915_WRITE(SKL_PS_PWR_GATE(pipe, scaler_id), 0);
3143 I915_WRITE(SKL_PS_WIN_POS(pipe, scaler_id), (dst_x << 16) | dst_y);
3144 I915_WRITE(SKL_PS_WIN_SZ(pipe, scaler_id), (dst_w << 16) | dst_h);
3145 I915_WRITE(PLANE_POS(pipe, 0), 0);
3146 } else {
3147 I915_WRITE(PLANE_POS(pipe, 0), (dst_y << 16) | dst_x);
3148 }
3149
121920fa 3150 I915_WRITE(PLANE_SURF(pipe, 0), surf_addr);
70d21f0e
DL		 3151
3152 POSTING_READ(PLANE_SURF(pipe, 0));
3153}
3154
17638cd6
JB		 3155/* Assume fb object is pinned & idle & fenced and just update base pointers */
3156static int
3157intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
3158 int x, int y, enum mode_set_atomic state)
3159{
3160 struct drm_device *dev = crtc->dev;
3161 struct drm_i915_private *dev_priv = dev->dev_private;
17638cd6 3162
6b8e6ed0
CW		 3163 if (dev_priv->display.disable_fbc)
3164 dev_priv->display.disable_fbc(dev);
81255565 3165
29b9bde6
DV		 3166 dev_priv->display.update_primary_plane(crtc, fb, x, y);
3167
3168 return 0;
81255565
JB		 3169}
3170
7514747d 3171static void intel_complete_page_flips(struct drm_device *dev)
96a02917 3172{
96a02917
VS		 3173 struct drm_crtc *crtc;
3174
70e1e0ec 3175 for_each_crtc(dev, crtc) {
96a02917
VS		 3176 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3177 enum plane plane = intel_crtc->plane;
3178
3179 intel_prepare_page_flip(dev, plane);
3180 intel_finish_page_flip_plane(dev, plane);
3181 }
7514747d
VS		 3182}
3183
3184static void intel_update_primary_planes(struct drm_device *dev)
3185{
3186 struct drm_i915_private *dev_priv = dev->dev_private;
3187 struct drm_crtc *crtc;
96a02917 3188
70e1e0ec 3189 for_each_crtc(dev, crtc) {
96a02917
VS		 3190 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3191
51fd371b 3192 drm_modeset_lock(&crtc->mutex, NULL);
947fdaad
CW		 3193 /*
3194 * FIXME: Once we have proper support for primary planes (and
3195 * disabling them without disabling the entire crtc) allow again
66e514c1 3196 * a NULL crtc->primary->fb.
947fdaad 3197 */
f4510a27 3198 if (intel_crtc->active && crtc->primary->fb)
262ca2b0 3199 dev_priv->display.update_primary_plane(crtc,
66e514c1 3200 crtc->primary->fb,
262ca2b0
MR		 3201 crtc->x,
3202 crtc->y);
51fd371b 3203 drm_modeset_unlock(&crtc->mutex);
96a02917
VS		 3204 }
3205}
3206
ce22dba9
ML		 3207void intel_crtc_reset(struct intel_crtc *crtc)
3208{
3209 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
3210
3211 if (!crtc->active)
3212 return;
3213
3214 intel_crtc_disable_planes(&crtc->base);
3215 dev_priv->display.crtc_disable(&crtc->base);
3216 dev_priv->display.crtc_enable(&crtc->base);
3217 intel_crtc_enable_planes(&crtc->base);
3218}
3219
7514747d
VS		 3220void intel_prepare_reset(struct drm_device *dev)
3221{
f98ce92f
VS		 3222 struct drm_i915_private *dev_priv = to_i915(dev);
3223 struct intel_crtc *crtc;
3224
7514747d
VS		 3225 /* no reset support for gen2 */
3226 if (IS_GEN2(dev))
3227 return;
3228
3229 /* reset doesn't touch the display */
3230 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
3231 return;
3232
3233 drm_modeset_lock_all(dev);
f98ce92f
VS		 3234
3235 /*
3236 * Disabling the crtcs gracefully seems nicer. Also the
3237 * g33 docs say we should at least disable all the planes.
3238 */
3239 for_each_intel_crtc(dev, crtc) {
ce22dba9
ML		 3240 if (!crtc->active)
3241 continue;
3242
3243 intel_crtc_disable_planes(&crtc->base);
3244 dev_priv->display.crtc_disable(&crtc->base);
f98ce92f 3245 }
7514747d
VS		 3246}
3247
3248void intel_finish_reset(struct drm_device *dev)
3249{
3250 struct drm_i915_private *dev_priv = to_i915(dev);
3251
3252 /*
3253 * Flips in the rings will be nuked by the reset,
3254 * so complete all pending flips so that user space
3255 * will get its events and not get stuck.
3256 */
3257 intel_complete_page_flips(dev);
3258
3259 /* no reset support for gen2 */
3260 if (IS_GEN2(dev))
3261 return;
3262
3263 /* reset doesn't touch the display */
3264 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) {
3265 /*
3266 * Flips in the rings have been nuked by the reset,
3267 * so update the base address of all primary
3268 * planes to the the last fb to make sure we're
3269 * showing the correct fb after a reset.
3270 */
3271 intel_update_primary_planes(dev);
3272 return;
3273 }
3274
3275 /*
3276 * The display has been reset as well,
3277 * so need a full re-initialization.
3278 */
3279 intel_runtime_pm_disable_interrupts(dev_priv);
3280 intel_runtime_pm_enable_interrupts(dev_priv);
3281
3282 intel_modeset_init_hw(dev);
3283
3284 spin_lock_irq(&dev_priv->irq_lock);
3285 if (dev_priv->display.hpd_irq_setup)
3286 dev_priv->display.hpd_irq_setup(dev);
3287 spin_unlock_irq(&dev_priv->irq_lock);
3288
3289 intel_modeset_setup_hw_state(dev, true);
3290
3291 intel_hpd_init(dev_priv);
3292
3293 drm_modeset_unlock_all(dev);
3294}
3295
14667a4b
CW		 3296static int
3297intel_finish_fb(struct drm_framebuffer *old_fb)
3298{
2ff8fde1 3299 struct drm_i915_gem_object *obj = intel_fb_obj(old_fb);
14667a4b
CW		 3300 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
3301 bool was_interruptible = dev_priv->mm.interruptible;
3302 int ret;
3303
14667a4b
CW		 3304 /* Big Hammer, we also need to ensure that any pending
3305 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
3306 * current scanout is retired before unpinning the old
3307 * framebuffer.
3308 *
3309 * This should only fail upon a hung GPU, in which case we
3310 * can safely continue.
3311 */
3312 dev_priv->mm.interruptible = false;
3313 ret = i915_gem_object_finish_gpu(obj);
3314 dev_priv->mm.interruptible = was_interruptible;
3315
3316 return ret;
3317}
3318
7d5e3799
CW		 3319static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
3320{
3321 struct drm_device *dev = crtc->dev;
3322 struct drm_i915_private *dev_priv = dev->dev_private;
3323 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7d5e3799
CW		 3324 bool pending;
3325
3326 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
3327 intel_crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
3328 return false;
3329
5e2d7afc 3330 spin_lock_irq(&dev->event_lock);
7d5e3799 3331 pending = to_intel_crtc(crtc)->unpin_work != NULL;
5e2d7afc 3332 spin_unlock_irq(&dev->event_lock);
7d5e3799
CW		 3333
3334 return pending;
3335}
3336
e30e8f75
GP		 3337static void intel_update_pipe_size(struct intel_crtc *crtc)
3338{
3339 struct drm_device *dev = crtc->base.dev;
3340 struct drm_i915_private *dev_priv = dev->dev_private;
3341 const struct drm_display_mode *adjusted_mode;
3342
3343 if (!i915.fastboot)
3344 return;
3345
3346 /*
3347 * Update pipe size and adjust fitter if needed: the reason for this is
3348 * that in compute_mode_changes we check the native mode (not the pfit
3349 * mode) to see if we can flip rather than do a full mode set. In the
3350 * fastboot case, we'll flip, but if we don't update the pipesrc and
3351 * pfit state, we'll end up with a big fb scanned out into the wrong
3352 * sized surface.
3353 *
3354 * To fix this properly, we need to hoist the checks up into
3355 * compute_mode_changes (or above), check the actual pfit state and
3356 * whether the platform allows pfit disable with pipe active, and only
3357 * then update the pipesrc and pfit state, even on the flip path.
3358 */
3359
6e3c9717 3360 adjusted_mode = &crtc->config->base.adjusted_mode;
e30e8f75
GP		 3361
3362 I915_WRITE(PIPESRC(crtc->pipe),
3363 ((adjusted_mode->crtc_hdisplay - 1) << 16) |
3364 (adjusted_mode->crtc_vdisplay - 1));
6e3c9717 3365 if (!crtc->config->pch_pfit.enabled &&
409ee761
ACO		 3366 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) ||
3367 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
e30e8f75
GP		 3368 I915_WRITE(PF_CTL(crtc->pipe), 0);
3369 I915_WRITE(PF_WIN_POS(crtc->pipe), 0);
3370 I915_WRITE(PF_WIN_SZ(crtc->pipe), 0);
3371 }
6e3c9717
ACO		 3372 crtc->config->pipe_src_w = adjusted_mode->crtc_hdisplay;
3373 crtc->config->pipe_src_h = adjusted_mode->crtc_vdisplay;
e30e8f75
GP		 3374}
3375
5e84e1a4
ZW		 3376static void intel_fdi_normal_train(struct drm_crtc *crtc)
3377{
3378 struct drm_device *dev = crtc->dev;
3379 struct drm_i915_private *dev_priv = dev->dev_private;
3380 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3381 int pipe = intel_crtc->pipe;
3382 u32 reg, temp;
3383
3384 /* enable normal train */
3385 reg = FDI_TX_CTL(pipe);
3386 temp = I915_READ(reg);
61e499bf 3387 if (IS_IVYBRIDGE(dev)) {
357555c0
JB		 3388 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3389 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
61e499bf
KP		 3390 } else {
3391 temp &= ~FDI_LINK_TRAIN_NONE;
3392 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
357555c0 3393 }
5e84e1a4
ZW		 3394 I915_WRITE(reg, temp);
3395
3396 reg = FDI_RX_CTL(pipe);
3397 temp = I915_READ(reg);
3398 if (HAS_PCH_CPT(dev)) {
3399 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3400 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
3401 } else {
3402 temp &= ~FDI_LINK_TRAIN_NONE;
3403 temp |= FDI_LINK_TRAIN_NONE;
3404 }
3405 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
3406
3407 /* wait one idle pattern time */
3408 POSTING_READ(reg);
3409 udelay(1000);
357555c0
JB		 3410
3411 /* IVB wants error correction enabled */
3412 if (IS_IVYBRIDGE(dev))
3413 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
3414 FDI_FE_ERRC_ENABLE);
5e84e1a4
ZW		 3415}
3416
8db9d77b
ZW		 3417/* The FDI link training functions for ILK/Ibexpeak. */
3418static void ironlake_fdi_link_train(struct drm_crtc *crtc)
3419{
3420 struct drm_device *dev = crtc->dev;
3421 struct drm_i915_private *dev_priv = dev->dev_private;
3422 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3423 int pipe = intel_crtc->pipe;
5eddb70b 3424 u32 reg, temp, tries;
8db9d77b 3425
1c8562f6 3426 /* FDI needs bits from pipe first */
0fc932b8 3427 assert_pipe_enabled(dev_priv, pipe);
0fc932b8 3428
e1a44743
AJ		 3429 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3430 for train result */
5eddb70b
CW		 3431 reg = FDI_RX_IMR(pipe);
3432 temp = I915_READ(reg);
e1a44743
AJ		 3433 temp &= ~FDI_RX_SYMBOL_LOCK;
3434 temp &= ~FDI_RX_BIT_LOCK;
5eddb70b
CW		 3435 I915_WRITE(reg, temp);
3436 I915_READ(reg);
e1a44743
AJ		 3437 udelay(150);
3438
8db9d77b 3439 /* enable CPU FDI TX and PCH FDI RX */
5eddb70b
CW		 3440 reg = FDI_TX_CTL(pipe);
3441 temp = I915_READ(reg);
627eb5a3 3442 temp &= ~FDI_DP_PORT_WIDTH_MASK;
6e3c9717 3443 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
8db9d77b
ZW		 3444 temp &= ~FDI_LINK_TRAIN_NONE;
3445 temp |= FDI_LINK_TRAIN_PATTERN_1;
5eddb70b 3446 I915_WRITE(reg, temp | FDI_TX_ENABLE);
8db9d77b 3447
5eddb70b
CW		 3448 reg = FDI_RX_CTL(pipe);
3449 temp = I915_READ(reg);
8db9d77b
ZW		 3450 temp &= ~FDI_LINK_TRAIN_NONE;
3451 temp |= FDI_LINK_TRAIN_PATTERN_1;
5eddb70b
CW		 3452 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3453
3454 POSTING_READ(reg);
8db9d77b
ZW		 3455 udelay(150);
3456
5b2adf89 3457 /* Ironlake workaround, enable clock pointer after FDI enable*/
8f5718a6
DV		 3458 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
3459 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
3460 FDI_RX_PHASE_SYNC_POINTER_EN);
5b2adf89 3461
5eddb70b 3462 reg = FDI_RX_IIR(pipe);
e1a44743 3463 for (tries = 0; tries < 5; tries++) {
5eddb70b 3464 temp = I915_READ(reg);
8db9d77b
ZW		 3465 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3466
3467 if ((temp & FDI_RX_BIT_LOCK)) {
3468 DRM_DEBUG_KMS("FDI train 1 done.\n");
5eddb70b 3469 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
8db9d77b
ZW		 3470 break;
3471 }
8db9d77b 3472 }
e1a44743 3473 if (tries == 5)
5eddb70b 3474 DRM_ERROR("FDI train 1 fail!\n");
8db9d77b
ZW		 3475
3476 /* Train 2 */
5eddb70b
CW		 3477 reg = FDI_TX_CTL(pipe);
3478 temp = I915_READ(reg);
8db9d77b
ZW		 3479 temp &= ~FDI_LINK_TRAIN_NONE;
3480 temp |= FDI_LINK_TRAIN_PATTERN_2;
5eddb70b 3481 I915_WRITE(reg, temp);
8db9d77b 3482
5eddb70b
CW		 3483 reg = FDI_RX_CTL(pipe);
3484 temp = I915_READ(reg);
8db9d77b
ZW		 3485 temp &= ~FDI_LINK_TRAIN_NONE;
3486 temp |= FDI_LINK_TRAIN_PATTERN_2;
5eddb70b 3487 I915_WRITE(reg, temp);
8db9d77b 3488
5eddb70b
CW		 3489 POSTING_READ(reg);
3490 udelay(150);
8db9d77b 3491
5eddb70b 3492 reg = FDI_RX_IIR(pipe);
e1a44743 3493 for (tries = 0; tries < 5; tries++) {
5eddb70b 3494 temp = I915_READ(reg);
8db9d77b
ZW		 3495 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3496
3497 if (temp & FDI_RX_SYMBOL_LOCK) {
5eddb70b 3498 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
8db9d77b
ZW		 3499 DRM_DEBUG_KMS("FDI train 2 done.\n");
3500 break;
3501 }
8db9d77b 3502 }
e1a44743 3503 if (tries == 5)
5eddb70b 3504 DRM_ERROR("FDI train 2 fail!\n");
8db9d77b
ZW		 3505
3506 DRM_DEBUG_KMS("FDI train done\n");
5c5313c8 3507
8db9d77b
ZW		 3508}
3509
0206e353 3510static const int snb_b_fdi_train_param[] = {
8db9d77b
ZW		 3511 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
3512 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
3513 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
3514 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
3515};
3516
3517/* The FDI link training functions for SNB/Cougarpoint. */
3518static void gen6_fdi_link_train(struct drm_crtc *crtc)
3519{
3520 struct drm_device *dev = crtc->dev;
3521 struct drm_i915_private *dev_priv = dev->dev_private;
3522 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3523 int pipe = intel_crtc->pipe;
fa37d39e 3524 u32 reg, temp, i, retry;
8db9d77b 3525
e1a44743
AJ		 3526 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3527 for train result */
5eddb70b
CW		 3528 reg = FDI_RX_IMR(pipe);
3529 temp = I915_READ(reg);
e1a44743
AJ		 3530 temp &= ~FDI_RX_SYMBOL_LOCK;
3531 temp &= ~FDI_RX_BIT_LOCK;
5eddb70b
CW		 3532 I915_WRITE(reg, temp);
3533
3534 POSTING_READ(reg);
e1a44743
AJ		 3535 udelay(150);
3536
8db9d77b 3537 /* enable CPU FDI TX and PCH FDI RX */
5eddb70b
CW		 3538 reg = FDI_TX_CTL(pipe);
3539 temp = I915_READ(reg);
627eb5a3 3540 temp &= ~FDI_DP_PORT_WIDTH_MASK;
6e3c9717 3541 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
8db9d77b
ZW		 3542 temp &= ~FDI_LINK_TRAIN_NONE;
3543 temp |= FDI_LINK_TRAIN_PATTERN_1;
3544 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3545 /* SNB-B */
3546 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
5eddb70b 3547 I915_WRITE(reg, temp | FDI_TX_ENABLE);
8db9d77b 3548
d74cf324
DV		 3549 I915_WRITE(FDI_RX_MISC(pipe),
3550 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
3551
5eddb70b
CW		 3552 reg = FDI_RX_CTL(pipe);
3553 temp = I915_READ(reg);
8db9d77b
ZW		 3554 if (HAS_PCH_CPT(dev)) {
3555 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3556 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3557 } else {
3558 temp &= ~FDI_LINK_TRAIN_NONE;
3559 temp |= FDI_LINK_TRAIN_PATTERN_1;
3560 }
5eddb70b
CW		 3561 I915_WRITE(reg, temp | FDI_RX_ENABLE);
3562
3563 POSTING_READ(reg);
8db9d77b
ZW		 3564 udelay(150);
3565
0206e353 3566 for (i = 0; i < 4; i++) {
5eddb70b
CW		 3567 reg = FDI_TX_CTL(pipe);
3568 temp = I915_READ(reg);
8db9d77b
ZW		 3569 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3570 temp |= snb_b_fdi_train_param[i];
5eddb70b
CW		 3571 I915_WRITE(reg, temp);
3572
3573 POSTING_READ(reg);
8db9d77b
ZW		 3574 udelay(500);
3575
fa37d39e
SP		 3576 for (retry = 0; retry < 5; retry++) {
3577 reg = FDI_RX_IIR(pipe);
3578 temp = I915_READ(reg);
3579 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3580 if (temp & FDI_RX_BIT_LOCK) {
3581 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3582 DRM_DEBUG_KMS("FDI train 1 done.\n");
3583 break;
3584 }
3585 udelay(50);
8db9d77b 3586 }
fa37d39e
SP		 3587 if (retry < 5)
3588 break;
8db9d77b
ZW		 3589 }
3590 if (i == 4)
5eddb70b 3591 DRM_ERROR("FDI train 1 fail!\n");
8db9d77b
ZW		 3592
3593 /* Train 2 */
5eddb70b
CW		 3594 reg = FDI_TX_CTL(pipe);
3595 temp = I915_READ(reg);
8db9d77b
ZW		 3596 temp &= ~FDI_LINK_TRAIN_NONE;
3597 temp |= FDI_LINK_TRAIN_PATTERN_2;
3598 if (IS_GEN6(dev)) {
3599 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3600 /* SNB-B */
3601 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
3602 }
5eddb70b 3603 I915_WRITE(reg, temp);
8db9d77b 3604
5eddb70b
CW		 3605 reg = FDI_RX_CTL(pipe);
3606 temp = I915_READ(reg);
8db9d77b
ZW		 3607 if (HAS_PCH_CPT(dev)) {
3608 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3609 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
3610 } else {
3611 temp &= ~FDI_LINK_TRAIN_NONE;
3612 temp |= FDI_LINK_TRAIN_PATTERN_2;
3613 }
5eddb70b
CW		 3614 I915_WRITE(reg, temp);
3615
3616 POSTING_READ(reg);
8db9d77b
ZW		 3617 udelay(150);
3618
0206e353 3619 for (i = 0; i < 4; i++) {
5eddb70b
CW		 3620 reg = FDI_TX_CTL(pipe);
3621 temp = I915_READ(reg);
8db9d77b
ZW		 3622 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
3623 temp |= snb_b_fdi_train_param[i];
5eddb70b
CW		 3624 I915_WRITE(reg, temp);
3625
3626 POSTING_READ(reg);
8db9d77b
ZW		 3627 udelay(500);
3628
fa37d39e
SP		 3629 for (retry = 0; retry < 5; retry++) {
3630 reg = FDI_RX_IIR(pipe);
3631 temp = I915_READ(reg);
3632 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
3633 if (temp & FDI_RX_SYMBOL_LOCK) {
3634 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3635 DRM_DEBUG_KMS("FDI train 2 done.\n");
3636 break;
3637 }
3638 udelay(50);
8db9d77b 3639 }
fa37d39e
SP		 3640 if (retry < 5)
3641 break;
8db9d77b
ZW		 3642 }
3643 if (i == 4)
5eddb70b 3644 DRM_ERROR("FDI train 2 fail!\n");
8db9d77b
ZW		 3645
3646 DRM_DEBUG_KMS("FDI train done.\n");
3647}
3648
357555c0
JB		 3649/* Manual link training for Ivy Bridge A0 parts */
3650static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
3651{
3652 struct drm_device *dev = crtc->dev;
3653 struct drm_i915_private *dev_priv = dev->dev_private;
3654 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3655 int pipe = intel_crtc->pipe;
139ccd3f 3656 u32 reg, temp, i, j;
357555c0
JB		 3657
3658 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
3659 for train result */
3660 reg = FDI_RX_IMR(pipe);
3661 temp = I915_READ(reg);
3662 temp &= ~FDI_RX_SYMBOL_LOCK;
3663 temp &= ~FDI_RX_BIT_LOCK;
3664 I915_WRITE(reg, temp);
3665
3666 POSTING_READ(reg);
3667 udelay(150);
3668
01a415fd
DV		 3669 DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
3670 I915_READ(FDI_RX_IIR(pipe)));
3671
139ccd3f
JB		 3672 /* Try each vswing and preemphasis setting twice before moving on */
3673 for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
3674 /* disable first in case we need to retry */
3675 reg = FDI_TX_CTL(pipe);
3676 temp = I915_READ(reg);
3677 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
3678 temp &= ~FDI_TX_ENABLE;
3679 I915_WRITE(reg, temp);
357555c0 3680
139ccd3f
JB		 3681 reg = FDI_RX_CTL(pipe);
3682 temp = I915_READ(reg);
3683 temp &= ~FDI_LINK_TRAIN_AUTO;
3684 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3685 temp &= ~FDI_RX_ENABLE;
3686 I915_WRITE(reg, temp);
357555c0 3687
139ccd3f 3688 /* enable CPU FDI TX and PCH FDI RX */
357555c0
JB		 3689 reg = FDI_TX_CTL(pipe);
3690 temp = I915_READ(reg);
139ccd3f 3691 temp &= ~FDI_DP_PORT_WIDTH_MASK;
6e3c9717 3692 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
139ccd3f 3693 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
357555c0 3694 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
139ccd3f
JB		 3695 temp |= snb_b_fdi_train_param[j/2];
3696 temp |= FDI_COMPOSITE_SYNC;
3697 I915_WRITE(reg, temp | FDI_TX_ENABLE);
357555c0 3698
139ccd3f
JB		 3699 I915_WRITE(FDI_RX_MISC(pipe),
3700 FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
357555c0 3701
139ccd3f 3702 reg = FDI_RX_CTL(pipe);
357555c0 3703 temp = I915_READ(reg);
139ccd3f
JB		 3704 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3705 temp |= FDI_COMPOSITE_SYNC;
3706 I915_WRITE(reg, temp | FDI_RX_ENABLE);
357555c0 3707
139ccd3f
JB		 3708 POSTING_READ(reg);
3709 udelay(1); /* should be 0.5us */
357555c0 3710
139ccd3f
JB		 3711 for (i = 0; i < 4; i++) {
3712 reg = FDI_RX_IIR(pipe);
3713 temp = I915_READ(reg);
3714 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
357555c0 3715
139ccd3f
JB		 3716 if (temp & FDI_RX_BIT_LOCK ||
3717 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
3718 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
3719 DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
3720 i);
3721 break;
3722 }
3723 udelay(1); /* should be 0.5us */
3724 }
3725 if (i == 4) {
3726 DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
3727 continue;
3728 }
357555c0 3729
139ccd3f 3730 /* Train 2 */
357555c0
JB		 3731 reg = FDI_TX_CTL(pipe);
3732 temp = I915_READ(reg);
139ccd3f
JB		 3733 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
3734 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
3735 I915_WRITE(reg, temp);
3736
3737 reg = FDI_RX_CTL(pipe);
3738 temp = I915_READ(reg);
3739 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3740 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
357555c0
JB		 3741 I915_WRITE(reg, temp);
3742
3743 POSTING_READ(reg);
139ccd3f 3744 udelay(2); /* should be 1.5us */
357555c0 3745
139ccd3f
JB		 3746 for (i = 0; i < 4; i++) {
3747 reg = FDI_RX_IIR(pipe);
3748 temp = I915_READ(reg);
3749 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
357555c0 3750
139ccd3f
JB		 3751 if (temp & FDI_RX_SYMBOL_LOCK ||
3752 (I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
3753 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
3754 DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
3755 i);
3756 goto train_done;
3757 }
3758 udelay(2); /* should be 1.5us */
357555c0 3759 }
139ccd3f
JB		 3760 if (i == 4)
3761 DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
357555c0 3762 }
357555c0 3763
139ccd3f 3764train_done:
357555c0
JB		 3765 DRM_DEBUG_KMS("FDI train done.\n");
3766}
3767
88cefb6c 3768static void ironlake_fdi_pll_enable(struct intel_crtc *intel_crtc)
2c07245f 3769{
88cefb6c 3770 struct drm_device *dev = intel_crtc->base.dev;
2c07245f 3771 struct drm_i915_private *dev_priv = dev->dev_private;
2c07245f 3772 int pipe = intel_crtc->pipe;
5eddb70b 3773 u32 reg, temp;
79e53945 3774
c64e311e 3775
c98e9dcf 3776 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
5eddb70b
CW		 3777 reg = FDI_RX_CTL(pipe);
3778 temp = I915_READ(reg);
627eb5a3 3779 temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
6e3c9717 3780 temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
dfd07d72 3781 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
5eddb70b
CW		 3782 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
3783
3784 POSTING_READ(reg);
c98e9dcf
JB		 3785 udelay(200);
3786
3787 /* Switch from Rawclk to PCDclk */
5eddb70b
CW		 3788 temp = I915_READ(reg);
3789 I915_WRITE(reg, temp | FDI_PCDCLK);
3790
3791 POSTING_READ(reg);
c98e9dcf
JB		 3792 udelay(200);
3793
20749730
PZ		 3794 /* Enable CPU FDI TX PLL, always on for Ironlake */
3795 reg = FDI_TX_CTL(pipe);
3796 temp = I915_READ(reg);
3797 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
3798 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
5eddb70b 3799
20749730
PZ		 3800 POSTING_READ(reg);
3801 udelay(100);
6be4a607 3802 }
0e23b99d
JB		 3803}
3804
88cefb6c
DV		 3805static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
3806{
3807 struct drm_device *dev = intel_crtc->base.dev;
3808 struct drm_i915_private *dev_priv = dev->dev_private;
3809 int pipe = intel_crtc->pipe;
3810 u32 reg, temp;
3811
3812 /* Switch from PCDclk to Rawclk */
3813 reg = FDI_RX_CTL(pipe);
3814 temp = I915_READ(reg);
3815 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3816
3817 /* Disable CPU FDI TX PLL */
3818 reg = FDI_TX_CTL(pipe);
3819 temp = I915_READ(reg);
3820 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3821
3822 POSTING_READ(reg);
3823 udelay(100);
3824
3825 reg = FDI_RX_CTL(pipe);
3826 temp = I915_READ(reg);
3827 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3828
3829 /* Wait for the clocks to turn off. */
3830 POSTING_READ(reg);
3831 udelay(100);
3832}
3833
0fc932b8
JB		 3834static void ironlake_fdi_disable(struct drm_crtc *crtc)
3835{
3836 struct drm_device *dev = crtc->dev;
3837 struct drm_i915_private *dev_priv = dev->dev_private;
3838 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3839 int pipe = intel_crtc->pipe;
3840 u32 reg, temp;
3841
3842 /* disable CPU FDI tx and PCH FDI rx */
3843 reg = FDI_TX_CTL(pipe);
3844 temp = I915_READ(reg);
3845 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
3846 POSTING_READ(reg);
3847
3848 reg = FDI_RX_CTL(pipe);
3849 temp = I915_READ(reg);
3850 temp &= ~(0x7 << 16);
dfd07d72 3851 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
0fc932b8
JB		 3852 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
3853
3854 POSTING_READ(reg);
3855 udelay(100);
3856
3857 /* Ironlake workaround, disable clock pointer after downing FDI */
eba905b2 3858 if (HAS_PCH_IBX(dev))
6f06ce18 3859 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
0fc932b8
JB		 3860
3861 /* still set train pattern 1 */
3862 reg = FDI_TX_CTL(pipe);
3863 temp = I915_READ(reg);
3864 temp &= ~FDI_LINK_TRAIN_NONE;
3865 temp |= FDI_LINK_TRAIN_PATTERN_1;
3866 I915_WRITE(reg, temp);
3867
3868 reg = FDI_RX_CTL(pipe);
3869 temp = I915_READ(reg);
3870 if (HAS_PCH_CPT(dev)) {
3871 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
3872 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
3873 } else {
3874 temp &= ~FDI_LINK_TRAIN_NONE;
3875 temp |= FDI_LINK_TRAIN_PATTERN_1;
3876 }
3877 /* BPC in FDI rx is consistent with that in PIPECONF */
3878 temp &= ~(0x07 << 16);
dfd07d72 3879 temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
0fc932b8
JB		 3880 I915_WRITE(reg, temp);
3881
3882 POSTING_READ(reg);
3883 udelay(100);
3884}
3885
5dce5b93
CW		 3886bool intel_has_pending_fb_unpin(struct drm_device *dev)
3887{
3888 struct intel_crtc *crtc;
3889
3890 /* Note that we don't need to be called with mode_config.lock here
3891 * as our list of CRTC objects is static for the lifetime of the
3892 * device and so cannot disappear as we iterate. Similarly, we can
3893 * happily treat the predicates as racy, atomic checks as userspace
3894 * cannot claim and pin a new fb without at least acquring the
3895 * struct_mutex and so serialising with us.
3896 */
d3fcc808 3897 for_each_intel_crtc(dev, crtc) {
5dce5b93
CW		 3898 if (atomic_read(&crtc->unpin_work_count) == 0)
3899 continue;
3900
3901 if (crtc->unpin_work)
3902 intel_wait_for_vblank(dev, crtc->pipe);
3903
3904 return true;
3905 }
3906
3907 return false;
3908}
3909
d6bbafa1
CW		 3910static void page_flip_completed(struct intel_crtc *intel_crtc)
3911{
3912 struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
3913 struct intel_unpin_work *work = intel_crtc->unpin_work;
3914
3915 /* ensure that the unpin work is consistent wrt ->pending. */
3916 smp_rmb();
3917 intel_crtc->unpin_work = NULL;
3918
3919 if (work->event)
3920 drm_send_vblank_event(intel_crtc->base.dev,
3921 intel_crtc->pipe,
3922 work->event);
3923
3924 drm_crtc_vblank_put(&intel_crtc->base);
3925
3926 wake_up_all(&dev_priv->pending_flip_queue);
3927 queue_work(dev_priv->wq, &work->work);
3928
3929 trace_i915_flip_complete(intel_crtc->plane,
3930 work->pending_flip_obj);
3931}
3932
46a55d30 3933void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
e6c3a2a6 3934{
0f91128d 3935 struct drm_device *dev = crtc->dev;
5bb61643 3936 struct drm_i915_private *dev_priv = dev->dev_private;
e6c3a2a6 3937
2c10d571 3938 WARN_ON(waitqueue_active(&dev_priv->pending_flip_queue));
9c787942
CW		 3939 if (WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue,
3940 !intel_crtc_has_pending_flip(crtc),
3941 60*HZ) == 0)) {
3942 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2c10d571 3943
5e2d7afc 3944 spin_lock_irq(&dev->event_lock);
9c787942
CW		 3945 if (intel_crtc->unpin_work) {
3946 WARN_ONCE(1, "Removing stuck page flip\n");
3947 page_flip_completed(intel_crtc);
3948 }
5e2d7afc 3949 spin_unlock_irq(&dev->event_lock);
9c787942 3950 }
5bb61643 3951
975d568a
CW		 3952 if (crtc->primary->fb) {
3953 mutex_lock(&dev->struct_mutex);
3954 intel_finish_fb(crtc->primary->fb);
3955 mutex_unlock(&dev->struct_mutex);
3956 }
e6c3a2a6
CW		 3957}
3958
e615efe4
ED		 3959/* Program iCLKIP clock to the desired frequency */
3960static void lpt_program_iclkip(struct drm_crtc *crtc)
3961{
3962 struct drm_device *dev = crtc->dev;
3963 struct drm_i915_private *dev_priv = dev->dev_private;
6e3c9717 3964 int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
e615efe4
ED		 3965 u32 divsel, phaseinc, auxdiv, phasedir = 0;
3966 u32 temp;
3967
09153000
DV		 3968 mutex_lock(&dev_priv->dpio_lock);
3969
e615efe4
ED		 3970 /* It is necessary to ungate the pixclk gate prior to programming
3971 * the divisors, and gate it back when it is done.
3972 */
3973 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
3974
3975 /* Disable SSCCTL */
3976 intel_sbi_write(dev_priv, SBI_SSCCTL6,
988d6ee8
PZ		 3977 intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK) |
3978 SBI_SSCCTL_DISABLE,
3979 SBI_ICLK);
e615efe4
ED		 3980
3981 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
12d7ceed 3982 if (clock == 20000) {
e615efe4
ED		 3983 auxdiv = 1;
3984 divsel = 0x41;
3985 phaseinc = 0x20;
3986 } else {
3987 /* The iCLK virtual clock root frequency is in MHz,
241bfc38
DL		 3988 * but the adjusted_mode->crtc_clock in in KHz. To get the
3989 * divisors, it is necessary to divide one by another, so we
e615efe4
ED		 3990 * convert the virtual clock precision to KHz here for higher
3991 * precision.
3992 */
3993 u32 iclk_virtual_root_freq = 172800 * 1000;
3994 u32 iclk_pi_range = 64;
3995 u32 desired_divisor, msb_divisor_value, pi_value;
3996
12d7ceed 3997 desired_divisor = (iclk_virtual_root_freq / clock);
e615efe4
ED		 3998 msb_divisor_value = desired_divisor / iclk_pi_range;
3999 pi_value = desired_divisor % iclk_pi_range;
4000
4001 auxdiv = 0;
4002 divsel = msb_divisor_value - 2;
4003 phaseinc = pi_value;
4004 }
4005
4006 /* This should not happen with any sane values */
4007 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
4008 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
4009 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
4010 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
4011
4012 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
12d7ceed 4013 clock,
e615efe4
ED		 4014 auxdiv,
4015 divsel,
4016 phasedir,
4017 phaseinc);
4018
4019 /* Program SSCDIVINTPHASE6 */
988d6ee8 4020 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
e615efe4
ED		 4021 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
4022 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
4023 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
4024 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
4025 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
4026 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
988d6ee8 4027 intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
e615efe4
ED		 4028
4029 /* Program SSCAUXDIV */
988d6ee8 4030 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
e615efe4
ED		 4031 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
4032 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
988d6ee8 4033 intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
e615efe4
ED		 4034
4035 /* Enable modulator and associated divider */
988d6ee8 4036 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
e615efe4 4037 temp &= ~SBI_SSCCTL_DISABLE;
988d6ee8 4038 intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
e615efe4
ED		 4039
4040 /* Wait for initialization time */
4041 udelay(24);
4042
4043 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
09153000
DV		 4044
4045 mutex_unlock(&dev_priv->dpio_lock);
e615efe4
ED		 4046}
4047
275f01b2
DV		 4048static void ironlake_pch_transcoder_set_timings(struct intel_crtc *crtc,
4049 enum pipe pch_transcoder)
4050{
4051 struct drm_device *dev = crtc->base.dev;
4052 struct drm_i915_private *dev_priv = dev->dev_private;
6e3c9717 4053 enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
275f01b2
DV		 4054
4055 I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
4056 I915_READ(HTOTAL(cpu_transcoder)));
4057 I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
4058 I915_READ(HBLANK(cpu_transcoder)));
4059 I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
4060 I915_READ(HSYNC(cpu_transcoder)));
4061
4062 I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
4063 I915_READ(VTOTAL(cpu_transcoder)));
4064 I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
4065 I915_READ(VBLANK(cpu_transcoder)));
4066 I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
4067 I915_READ(VSYNC(cpu_transcoder)));
4068 I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
4069 I915_READ(VSYNCSHIFT(cpu_transcoder)));
4070}
4071
003632d9 4072static void cpt_set_fdi_bc_bifurcation(struct drm_device *dev, bool enable)
1fbc0d78
DV		 4073{
4074 struct drm_i915_private *dev_priv = dev->dev_private;
4075 uint32_t temp;
4076
4077 temp = I915_READ(SOUTH_CHICKEN1);
003632d9 4078 if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
1fbc0d78
DV		 4079 return;
4080
4081 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
4082 WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
4083
003632d9
ACO		 4084 temp &= ~FDI_BC_BIFURCATION_SELECT;
4085 if (enable)
4086 temp |= FDI_BC_BIFURCATION_SELECT;
4087
4088 DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
1fbc0d78
DV		 4089 I915_WRITE(SOUTH_CHICKEN1, temp);
4090 POSTING_READ(SOUTH_CHICKEN1);
4091}
4092
4093static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
4094{
4095 struct drm_device *dev = intel_crtc->base.dev;
1fbc0d78
DV		 4096
4097 switch (intel_crtc->pipe) {
4098 case PIPE_A:
4099 break;
4100 case PIPE_B:
6e3c9717 4101 if (intel_crtc->config->fdi_lanes > 2)
003632d9 4102 cpt_set_fdi_bc_bifurcation(dev, false);
1fbc0d78 4103 else
003632d9 4104 cpt_set_fdi_bc_bifurcation(dev, true);
1fbc0d78
DV		 4105
4106 break;
4107 case PIPE_C:
003632d9 4108 cpt_set_fdi_bc_bifurcation(dev, true);
1fbc0d78
DV		 4109
4110 break;
4111 default:
4112 BUG();
4113 }
4114}
4115
f67a559d
JB		 4116/*
4117 * Enable PCH resources required for PCH ports:
4118 * - PCH PLLs
4119 * - FDI training & RX/TX
4120 * - update transcoder timings
4121 * - DP transcoding bits
4122 * - transcoder
4123 */
4124static void ironlake_pch_enable(struct drm_crtc *crtc)
0e23b99d
JB		 4125{
4126 struct drm_device *dev = crtc->dev;
4127 struct drm_i915_private *dev_priv = dev->dev_private;
4128 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4129 int pipe = intel_crtc->pipe;
ee7b9f93 4130 u32 reg, temp;
2c07245f 4131
ab9412ba 4132 assert_pch_transcoder_disabled(dev_priv, pipe);
e7e164db 4133
1fbc0d78
DV		 4134 if (IS_IVYBRIDGE(dev))
4135 ivybridge_update_fdi_bc_bifurcation(intel_crtc);
4136
cd986abb
DV		 4137 /* Write the TU size bits before fdi link training, so that error
4138 * detection works. */
4139 I915_WRITE(FDI_RX_TUSIZE1(pipe),
4140 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
4141
c98e9dcf 4142 /* For PCH output, training FDI link */
674cf967 4143 dev_priv->display.fdi_link_train(crtc);
2c07245f 4144
3ad8a208
DV		 4145 /* We need to program the right clock selection before writing the pixel
4146 * mutliplier into the DPLL. */
303b81e0 4147 if (HAS_PCH_CPT(dev)) {
ee7b9f93 4148 u32 sel;
4b645f14 4149
c98e9dcf 4150 temp = I915_READ(PCH_DPLL_SEL);
11887397
DV		 4151 temp |= TRANS_DPLL_ENABLE(pipe);
4152 sel = TRANS_DPLLB_SEL(pipe);
6e3c9717 4153 if (intel_crtc->config->shared_dpll == DPLL_ID_PCH_PLL_B)
ee7b9f93
JB		 4154 temp |= sel;
4155 else
4156 temp &= ~sel;
c98e9dcf 4157 I915_WRITE(PCH_DPLL_SEL, temp);
c98e9dcf 4158 }
5eddb70b 4159
3ad8a208
DV		 4160 /* XXX: pch pll's can be enabled any time before we enable the PCH
4161 * transcoder, and we actually should do this to not upset any PCH
4162 * transcoder that already use the clock when we share it.
4163 *
4164 * Note that enable_shared_dpll tries to do the right thing, but
4165 * get_shared_dpll unconditionally resets the pll - we need that to have
4166 * the right LVDS enable sequence. */
85b3894f 4167 intel_enable_shared_dpll(intel_crtc);
3ad8a208 4168
d9b6cb56
JB		 4169 /* set transcoder timing, panel must allow it */
4170 assert_panel_unlocked(dev_priv, pipe);
275f01b2 4171 ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
8db9d77b 4172
303b81e0 4173 intel_fdi_normal_train(crtc);
5e84e1a4 4174
c98e9dcf 4175 /* For PCH DP, enable TRANS_DP_CTL */
6e3c9717 4176 if (HAS_PCH_CPT(dev) && intel_crtc->config->has_dp_encoder) {
dfd07d72 4177 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
5eddb70b
CW		 4178 reg = TRANS_DP_CTL(pipe);
4179 temp = I915_READ(reg);
4180 temp &= ~(TRANS_DP_PORT_SEL_MASK |
220cad3c
EA		 4181 TRANS_DP_SYNC_MASK |
4182 TRANS_DP_BPC_MASK);
5eddb70b
CW		 4183 temp |= (TRANS_DP_OUTPUT_ENABLE |
4184 TRANS_DP_ENH_FRAMING);
9325c9f0 4185 temp |= bpc << 9; /* same format but at 11:9 */
c98e9dcf
JB		 4186
4187 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
5eddb70b 4188 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
c98e9dcf 4189 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
5eddb70b 4190 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
c98e9dcf
JB		 4191
4192 switch (intel_trans_dp_port_sel(crtc)) {
4193 case PCH_DP_B:
5eddb70b 4194 temp |= TRANS_DP_PORT_SEL_B;
c98e9dcf
JB		 4195 break;
4196 case PCH_DP_C:
5eddb70b 4197 temp |= TRANS_DP_PORT_SEL_C;
c98e9dcf
JB		 4198 break;
4199 case PCH_DP_D:
5eddb70b 4200 temp |= TRANS_DP_PORT_SEL_D;
c98e9dcf
JB		 4201 break;
4202 default:
e95d41e1 4203 BUG();
32f9d658 4204 }
2c07245f 4205
5eddb70b 4206 I915_WRITE(reg, temp);
6be4a607 4207 }
b52eb4dc 4208
b8a4f404 4209 ironlake_enable_pch_transcoder(dev_priv, pipe);
f67a559d
JB		 4210}
4211
1507e5bd
PZ		 4212static void lpt_pch_enable(struct drm_crtc *crtc)
4213{
4214 struct drm_device *dev = crtc->dev;
4215 struct drm_i915_private *dev_priv = dev->dev_private;
4216 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6e3c9717 4217 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
1507e5bd 4218
ab9412ba 4219 assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
1507e5bd 4220
8c52b5e8 4221 lpt_program_iclkip(crtc);
1507e5bd 4222
0540e488 4223 /* Set transcoder timing. */
275f01b2 4224 ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
1507e5bd 4225
937bb610 4226 lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
f67a559d
JB		 4227}
4228
716c2e55 4229void intel_put_shared_dpll(struct intel_crtc *crtc)
ee7b9f93 4230{
e2b78267 4231 struct intel_shared_dpll *pll = intel_crtc_to_shared_dpll(crtc);
ee7b9f93
JB		 4232
4233 if (pll == NULL)
4234 return;
4235
3e369b76 4236 if (!(pll->config.crtc_mask & (1 << crtc->pipe))) {
1e6f2ddc 4237 WARN(1, "bad %s crtc mask\n", pll->name);
ee7b9f93
JB		 4238 return;
4239 }
4240
3e369b76
ACO		 4241 pll->config.crtc_mask &= ~(1 << crtc->pipe);
4242 if (pll->config.crtc_mask == 0) {
f4a091c7
DV		 4243 WARN_ON(pll->on);
4244 WARN_ON(pll->active);
4245 }
4246
6e3c9717 4247 crtc->config->shared_dpll = DPLL_ID_PRIVATE;
ee7b9f93
JB		 4248}
4249
190f68c5
ACO		 4250struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
4251 struct intel_crtc_state *crtc_state)
ee7b9f93 4252{
e2b78267 4253 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
8bd31e67 4254 struct intel_shared_dpll *pll;
e2b78267 4255 enum intel_dpll_id i;
ee7b9f93 4256
98b6bd99
DV		 4257 if (HAS_PCH_IBX(dev_priv->dev)) {
4258 /* Ironlake PCH has a fixed PLL->PCH pipe mapping. */
d94ab068 4259 i = (enum intel_dpll_id) crtc->pipe;
e72f9fbf 4260 pll = &dev_priv->shared_dplls[i];
98b6bd99 4261
46edb027
DV		 4262 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4263 crtc->base.base.id, pll->name);
98b6bd99 4264
8bd31e67 4265 WARN_ON(pll->new_config->crtc_mask);
f2a69f44 4266
98b6bd99
DV		 4267 goto found;
4268 }
4269
bcddf610
S		 4270 if (IS_BROXTON(dev_priv->dev)) {
4271 /* PLL is attached to port in bxt */
4272 struct intel_encoder *encoder;
4273 struct intel_digital_port *intel_dig_port;
4274
4275 encoder = intel_ddi_get_crtc_new_encoder(crtc_state);
4276 if (WARN_ON(!encoder))
4277 return NULL;
4278
4279 intel_dig_port = enc_to_dig_port(&encoder->base);
4280 /* 1:1 mapping between ports and PLLs */
4281 i = (enum intel_dpll_id)intel_dig_port->port;
4282 pll = &dev_priv->shared_dplls[i];
4283 DRM_DEBUG_KMS("CRTC:%d using pre-allocated %s\n",
4284 crtc->base.base.id, pll->name);
4285 WARN_ON(pll->new_config->crtc_mask);
4286
4287 goto found;
4288 }
4289
e72f9fbf
DV		 4290 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4291 pll = &dev_priv->shared_dplls[i];
ee7b9f93
JB		 4292
4293 /* Only want to check enabled timings first */
8bd31e67 4294 if (pll->new_config->crtc_mask == 0)
ee7b9f93
JB		 4295 continue;
4296
190f68c5 4297 if (memcmp(&crtc_state->dpll_hw_state,
8bd31e67
ACO		 4298 &pll->new_config->hw_state,
4299 sizeof(pll->new_config->hw_state)) == 0) {
4300 DRM_DEBUG_KMS("CRTC:%d sharing existing %s (crtc mask 0x%08x, ative %d)\n",
1e6f2ddc 4301 crtc->base.base.id, pll->name,
8bd31e67
ACO		 4302 pll->new_config->crtc_mask,
4303 pll->active);
ee7b9f93
JB		 4304 goto found;
4305 }
4306 }
4307
4308 /* Ok no matching timings, maybe there's a free one? */
e72f9fbf
DV		 4309 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4310 pll = &dev_priv->shared_dplls[i];
8bd31e67 4311 if (pll->new_config->crtc_mask == 0) {
46edb027
DV		 4312 DRM_DEBUG_KMS("CRTC:%d allocated %s\n",
4313 crtc->base.base.id, pll->name);
ee7b9f93
JB		 4314 goto found;
4315 }
4316 }
4317
4318 return NULL;
4319
4320found:
8bd31e67 4321 if (pll->new_config->crtc_mask == 0)
190f68c5 4322 pll->new_config->hw_state = crtc_state->dpll_hw_state;
f2a69f44 4323
190f68c5 4324 crtc_state->shared_dpll = i;
46edb027
DV		 4325 DRM_DEBUG_DRIVER("using %s for pipe %c\n", pll->name,
4326 pipe_name(crtc->pipe));
ee7b9f93 4327
8bd31e67 4328 pll->new_config->crtc_mask |= 1 << crtc->pipe;
e04c7350 4329
ee7b9f93
JB		 4330 return pll;
4331}
4332
8bd31e67
ACO		 4333/**
4334 * intel_shared_dpll_start_config - start a new PLL staged config
4335 * @dev_priv: DRM device
4336 * @clear_pipes: mask of pipes that will have their PLLs freed
4337 *
4338 * Starts a new PLL staged config, copying the current config but
4339 * releasing the references of pipes specified in clear_pipes.
4340 */
4341static int intel_shared_dpll_start_config(struct drm_i915_private *dev_priv,
4342 unsigned clear_pipes)
4343{
4344 struct intel_shared_dpll *pll;
4345 enum intel_dpll_id i;
4346
4347 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4348 pll = &dev_priv->shared_dplls[i];
4349
4350 pll->new_config = kmemdup(&pll->config, sizeof pll->config,
4351 GFP_KERNEL);
4352 if (!pll->new_config)
4353 goto cleanup;
4354
4355 pll->new_config->crtc_mask &= ~clear_pipes;
4356 }
4357
4358 return 0;
4359
4360cleanup:
4361 while (--i >= 0) {
4362 pll = &dev_priv->shared_dplls[i];
f354d733 4363 kfree(pll->new_config);
8bd31e67
ACO		 4364 pll->new_config = NULL;
4365 }
4366
4367 return -ENOMEM;
4368}
4369
4370static void intel_shared_dpll_commit(struct drm_i915_private *dev_priv)
4371{
4372 struct intel_shared_dpll *pll;
4373 enum intel_dpll_id i;
4374
4375 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4376 pll = &dev_priv->shared_dplls[i];
4377
4378 WARN_ON(pll->new_config == &pll->config);
4379
4380 pll->config = *pll->new_config;
4381 kfree(pll->new_config);
4382 pll->new_config = NULL;
4383 }
4384}
4385
4386static void intel_shared_dpll_abort_config(struct drm_i915_private *dev_priv)
4387{
4388 struct intel_shared_dpll *pll;
4389 enum intel_dpll_id i;
4390
4391 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
4392 pll = &dev_priv->shared_dplls[i];
4393
4394 WARN_ON(pll->new_config == &pll->config);
4395
4396 kfree(pll->new_config);
4397 pll->new_config = NULL;
4398 }
4399}
4400
a1520318 4401static void cpt_verify_modeset(struct drm_device *dev, int pipe)
d4270e57
JB		 4402{
4403 struct drm_i915_private *dev_priv = dev->dev_private;
23670b32 4404 int dslreg = PIPEDSL(pipe);
d4270e57
JB		 4405 u32 temp;
4406
4407 temp = I915_READ(dslreg);
4408 udelay(500);
4409 if (wait_for(I915_READ(dslreg) != temp, 5)) {
d4270e57 4410 if (wait_for(I915_READ(dslreg) != temp, 5))
84f44ce7 4411 DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
d4270e57
JB		 4412 }
4413}
4414
a1b2278e
CK		 4415/**
4416 * skl_update_scaler_users - Stages update to crtc's scaler state
4417 * @intel_crtc: crtc
4418 * @crtc_state: crtc_state
4419 * @plane: plane (NULL indicates crtc is requesting update)
4420 * @plane_state: plane's state
4421 * @force_detach: request unconditional detachment of scaler
4422 *
4423 * This function updates scaler state for requested plane or crtc.
4424 * To request scaler usage update for a plane, caller shall pass plane pointer.
4425 * To request scaler usage update for crtc, caller shall pass plane pointer
4426 * as NULL.
4427 *
4428 * Return
4429 * 0 - scaler_usage updated successfully
4430 * error - requested scaling cannot be supported or other error condition
4431 */
4432int
4433skl_update_scaler_users(
4434 struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state,
4435 struct intel_plane *intel_plane, struct intel_plane_state *plane_state,
4436 int force_detach)
4437{
4438 int need_scaling;
4439 int idx;
4440 int src_w, src_h, dst_w, dst_h;
4441 int *scaler_id;
4442 struct drm_framebuffer *fb;
4443 struct intel_crtc_scaler_state *scaler_state;
6156a456 4444 unsigned int rotation;
a1b2278e
CK		 4445
4446 if (!intel_crtc || !crtc_state)
4447 return 0;
4448
4449 scaler_state = &crtc_state->scaler_state;
4450
4451 idx = intel_plane ? drm_plane_index(&intel_plane->base) : SKL_CRTC_INDEX;
4452 fb = intel_plane ? plane_state->base.fb : NULL;
4453
4454 if (intel_plane) {
4455 src_w = drm_rect_width(&plane_state->src) >> 16;
4456 src_h = drm_rect_height(&plane_state->src) >> 16;
4457 dst_w = drm_rect_width(&plane_state->dst);
4458 dst_h = drm_rect_height(&plane_state->dst);
4459 scaler_id = &plane_state->scaler_id;
6156a456 4460 rotation = plane_state->base.rotation;
a1b2278e
CK		 4461 } else {
4462 struct drm_display_mode *adjusted_mode =
4463 &crtc_state->base.adjusted_mode;
4464 src_w = crtc_state->pipe_src_w;
4465 src_h = crtc_state->pipe_src_h;
4466 dst_w = adjusted_mode->hdisplay;
4467 dst_h = adjusted_mode->vdisplay;
4468 scaler_id = &scaler_state->scaler_id;
6156a456 4469 rotation = DRM_ROTATE_0;
a1b2278e 4470 }
6156a456
CK		 4471
4472 need_scaling = intel_rotation_90_or_270(rotation) ?
4473 (src_h != dst_w || src_w != dst_h):
4474 (src_w != dst_w || src_h != dst_h);
a1b2278e
CK		 4475
4476 /*
4477 * if plane is being disabled or scaler is no more required or force detach
4478 * - free scaler binded to this plane/crtc
4479 * - in order to do this, update crtc->scaler_usage
4480 *
4481 * Here scaler state in crtc_state is set free so that
4482 * scaler can be assigned to other user. Actual register
4483 * update to free the scaler is done in plane/panel-fit programming.
4484 * For this purpose crtc/plane_state->scaler_id isn't reset here.
4485 */
4486 if (force_detach || !need_scaling || (intel_plane &&
4487 (!fb || !plane_state->visible))) {
4488 if (*scaler_id >= 0) {
4489 scaler_state->scaler_users &= ~(1 << idx);
4490 scaler_state->scalers[*scaler_id].in_use = 0;
4491
4492 DRM_DEBUG_KMS("Staged freeing scaler id %d.%d from %s:%d "
4493 "crtc_state = %p scaler_users = 0x%x\n",
4494 intel_crtc->pipe, *scaler_id, intel_plane ? "PLANE" : "CRTC",
4495 intel_plane ? intel_plane->base.base.id :
4496 intel_crtc->base.base.id, crtc_state,
4497 scaler_state->scaler_users);
4498 *scaler_id = -1;
4499 }
4500 return 0;
4501 }
4502
4503 /* range checks */
4504 if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
4505 dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
4506
4507 src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
4508 dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H) {
4509 DRM_DEBUG_KMS("%s:%d scaler_user index %u.%u: src %ux%u dst %ux%u "
4510 "size is out of scaler range\n",
4511 intel_plane ? "PLANE" : "CRTC",
4512 intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id,
4513 intel_crtc->pipe, idx, src_w, src_h, dst_w, dst_h);
4514 return -EINVAL;
4515 }
4516
4517 /* check colorkey */
4518 if (intel_plane && intel_plane->ckey.flags != I915_SET_COLORKEY_NONE) {
4519 DRM_DEBUG_KMS("PLANE:%d scaling with color key not allowed",
4520 intel_plane->base.base.id);
4521 return -EINVAL;
4522 }
4523
4524 /* Check src format */
4525 if (intel_plane) {
4526 switch (fb->pixel_format) {
4527 case DRM_FORMAT_RGB565:
4528 case DRM_FORMAT_XBGR8888:
4529 case DRM_FORMAT_XRGB8888:
4530 case DRM_FORMAT_ABGR8888:
4531 case DRM_FORMAT_ARGB8888:
4532 case DRM_FORMAT_XRGB2101010:
4533 case DRM_FORMAT_ARGB2101010:
4534 case DRM_FORMAT_XBGR2101010:
4535 case DRM_FORMAT_ABGR2101010:
4536 case DRM_FORMAT_YUYV:
4537 case DRM_FORMAT_YVYU:
4538 case DRM_FORMAT_UYVY:
4539 case DRM_FORMAT_VYUY:
4540 break;
4541 default:
4542 DRM_DEBUG_KMS("PLANE:%d FB:%d unsupported scaling format 0x%x\n",
4543 intel_plane->base.base.id, fb->base.id, fb->pixel_format);
4544 return -EINVAL;
4545 }
4546 }
4547
4548 /* mark this plane as a scaler user in crtc_state */
4549 scaler_state->scaler_users |= (1 << idx);
4550 DRM_DEBUG_KMS("%s:%d staged scaling request for %ux%u->%ux%u "
4551 "crtc_state = %p scaler_users = 0x%x\n",
4552 intel_plane ? "PLANE" : "CRTC",
4553 intel_plane ? intel_plane->base.base.id : intel_crtc->base.base.id,
4554 src_w, src_h, dst_w, dst_h, crtc_state, scaler_state->scaler_users);
4555 return 0;
4556}
4557
4558static void skylake_pfit_update(struct intel_crtc *crtc, int enable)
bd2e244f
JB		 4559{
4560 struct drm_device *dev = crtc->base.dev;
4561 struct drm_i915_private *dev_priv = dev->dev_private;
4562 int pipe = crtc->pipe;
a1b2278e
CK		 4563 struct intel_crtc_scaler_state *scaler_state =
4564 &crtc->config->scaler_state;
4565
4566 DRM_DEBUG_KMS("for crtc_state = %p\n", crtc->config);
4567
4568 /* To update pfit, first update scaler state */
4569 skl_update_scaler_users(crtc, crtc->config, NULL, NULL, !enable);
4570 intel_atomic_setup_scalers(crtc->base.dev, crtc, crtc->config);
4571 skl_detach_scalers(crtc);
4572 if (!enable)
4573 return;
bd2e244f 4574
6e3c9717 4575 if (crtc->config->pch_pfit.enabled) {
a1b2278e
CK		 4576 int id;
4577
4578 if (WARN_ON(crtc->config->scaler_state.scaler_id < 0)) {
4579 DRM_ERROR("Requesting pfit without getting a scaler first\n");
4580 return;
4581 }
4582
4583 id = scaler_state->scaler_id;
4584 I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
4585 PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
4586 I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc->config->pch_pfit.pos);
4587 I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc->config->pch_pfit.size);
4588
4589 DRM_DEBUG_KMS("for crtc_state = %p scaler_id = %d\n", crtc->config, id);
bd2e244f
JB		 4590 }
4591}
4592
b074cec8
JB		 4593static void ironlake_pfit_enable(struct intel_crtc *crtc)
4594{
4595 struct drm_device *dev = crtc->base.dev;
4596 struct drm_i915_private *dev_priv = dev->dev_private;
4597 int pipe = crtc->pipe;
4598
6e3c9717 4599 if (crtc->config->pch_pfit.enabled) {
b074cec8
JB		 4600 /* Force use of hard-coded filter coefficients
4601 * as some pre-programmed values are broken,
4602 * e.g. x201.
4603 */
4604 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
4605 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
4606 PF_PIPE_SEL_IVB(pipe));
4607 else
4608 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
6e3c9717
ACO		 4609 I915_WRITE(PF_WIN_POS(pipe), crtc->config->pch_pfit.pos);
4610 I915_WRITE(PF_WIN_SZ(pipe), crtc->config->pch_pfit.size);
d4270e57
JB		 4611 }
4612}
4613
4a3b8769 4614static void intel_enable_sprite_planes(struct drm_crtc *crtc)
bb53d4ae
VS		 4615{
4616 struct drm_device *dev = crtc->dev;
4617 enum pipe pipe = to_intel_crtc(crtc)->pipe;
af2b653b 4618 struct drm_plane *plane;
bb53d4ae
VS		 4619 struct intel_plane *intel_plane;
4620
af2b653b
MR		 4621 drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
4622 intel_plane = to_intel_plane(plane);
bb53d4ae
VS		 4623 if (intel_plane->pipe == pipe)
4624 intel_plane_restore(&intel_plane->base);
af2b653b 4625 }
bb53d4ae
VS		 4626}
4627
20bc8673 4628void hsw_enable_ips(struct intel_crtc *crtc)
d77e4531 4629{
cea165c3
VS		 4630 struct drm_device *dev = crtc->base.dev;
4631 struct drm_i915_private *dev_priv = dev->dev_private;
d77e4531 4632
6e3c9717 4633 if (!crtc->config->ips_enabled)
d77e4531
PZ		 4634 return;
4635
cea165c3
VS		 4636 /* We can only enable IPS after we enable a plane and wait for a vblank */
4637 intel_wait_for_vblank(dev, crtc->pipe);
4638
d77e4531 4639 assert_plane_enabled(dev_priv, crtc->plane);
cea165c3 4640 if (IS_BROADWELL(dev)) {
2a114cc1
BW		 4641 mutex_lock(&dev_priv->rps.hw_lock);
4642 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0xc0000000));
4643 mutex_unlock(&dev_priv->rps.hw_lock);
4644 /* Quoting Art Runyan: "its not safe to expect any particular
4645 * value in IPS_CTL bit 31 after enabling IPS through the
e59150dc
JB		 4646 * mailbox." Moreover, the mailbox may return a bogus state,
4647 * so we need to just enable it and continue on.
2a114cc1
BW		 4648 */
4649 } else {
4650 I915_WRITE(IPS_CTL, IPS_ENABLE);
4651 /* The bit only becomes 1 in the next vblank, so this wait here
4652 * is essentially intel_wait_for_vblank. If we don't have this
4653 * and don't wait for vblanks until the end of crtc_enable, then
4654 * the HW state readout code will complain that the expected
4655 * IPS_CTL value is not the one we read. */
4656 if (wait_for(I915_READ_NOTRACE(IPS_CTL) & IPS_ENABLE, 50))
4657 DRM_ERROR("Timed out waiting for IPS enable\n");
4658 }
d77e4531
PZ		 4659}
4660
20bc8673 4661void hsw_disable_ips(struct intel_crtc *crtc)
d77e4531
PZ		 4662{
4663 struct drm_device *dev = crtc->base.dev;
4664 struct drm_i915_private *dev_priv = dev->dev_private;
4665
6e3c9717 4666 if (!crtc->config->ips_enabled)
d77e4531
PZ		 4667 return;
4668
4669 assert_plane_enabled(dev_priv, crtc->plane);
23d0b130 4670 if (IS_BROADWELL(dev)) {
2a114cc1
BW		 4671 mutex_lock(&dev_priv->rps.hw_lock);
4672 WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
4673 mutex_unlock(&dev_priv->rps.hw_lock);
23d0b130
BW		 4674 /* wait for pcode to finish disabling IPS, which may take up to 42ms */
4675 if (wait_for((I915_READ(IPS_CTL) & IPS_ENABLE) == 0, 42))
4676 DRM_ERROR("Timed out waiting for IPS disable\n");
e59150dc 4677 } else {
2a114cc1 4678 I915_WRITE(IPS_CTL, 0);
e59150dc
JB		 4679 POSTING_READ(IPS_CTL);
4680 }
d77e4531
PZ		 4681
4682 /* We need to wait for a vblank before we can disable the plane. */
4683 intel_wait_for_vblank(dev, crtc->pipe);
4684}
4685
4686/** Loads the palette/gamma unit for the CRTC with the prepared values */
4687static void intel_crtc_load_lut(struct drm_crtc *crtc)
4688{
4689 struct drm_device *dev = crtc->dev;
4690 struct drm_i915_private *dev_priv = dev->dev_private;
4691 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4692 enum pipe pipe = intel_crtc->pipe;
4693 int palreg = PALETTE(pipe);
4694 int i;
4695 bool reenable_ips = false;
4696
4697 /* The clocks have to be on to load the palette. */
83d65738 4698 if (!crtc->state->enable || !intel_crtc->active)
d77e4531
PZ		 4699 return;
4700
50360403 4701 if (HAS_GMCH_DISPLAY(dev_priv->dev)) {
409ee761 4702 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI))
d77e4531
PZ		 4703 assert_dsi_pll_enabled(dev_priv);
4704 else
4705 assert_pll_enabled(dev_priv, pipe);
4706 }
4707
4708 /* use legacy palette for Ironlake */
7a1db49a 4709 if (!HAS_GMCH_DISPLAY(dev))
d77e4531
PZ		 4710 palreg = LGC_PALETTE(pipe);
4711
4712 /* Workaround : Do not read or write the pipe palette/gamma data while
4713 * GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
4714 */
6e3c9717 4715 if (IS_HASWELL(dev) && intel_crtc->config->ips_enabled &&
d77e4531
PZ		 4716 ((I915_READ(GAMMA_MODE(pipe)) & GAMMA_MODE_MODE_MASK) ==
4717 GAMMA_MODE_MODE_SPLIT)) {
4718 hsw_disable_ips(intel_crtc);
4719 reenable_ips = true;
4720 }
4721
4722 for (i = 0; i < 256; i++) {
4723 I915_WRITE(palreg + 4 * i,
4724 (intel_crtc->lut_r[i] << 16) |
4725 (intel_crtc->lut_g[i] << 8) |
4726 intel_crtc->lut_b[i]);
4727 }
4728
4729 if (reenable_ips)
4730 hsw_enable_ips(intel_crtc);
4731}
4732
7cac945f 4733static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
d3eedb1a 4734{
7cac945f 4735 if (intel_crtc->overlay) {
d3eedb1a
VS		 4736 struct drm_device *dev = intel_crtc->base.dev;
4737 struct drm_i915_private *dev_priv = dev->dev_private;
4738
4739 mutex_lock(&dev->struct_mutex);
4740 dev_priv->mm.interruptible = false;
4741 (void) intel_overlay_switch_off(intel_crtc->overlay);
4742 dev_priv->mm.interruptible = true;
4743 mutex_unlock(&dev->struct_mutex);
4744 }
4745
4746 /* Let userspace switch the overlay on again. In most cases userspace
4747 * has to recompute where to put it anyway.
4748 */
4749}
4750
87d4300a
ML		 4751/**
4752 * intel_post_enable_primary - Perform operations after enabling primary plane
4753 * @crtc: the CRTC whose primary plane was just enabled
4754 *
4755 * Performs potentially sleeping operations that must be done after the primary
4756 * plane is enabled, such as updating FBC and IPS. Note that this may be
4757 * called due to an explicit primary plane update, or due to an implicit
4758 * re-enable that is caused when a sprite plane is updated to no longer
4759 * completely hide the primary plane.
4760 */
4761static void
4762intel_post_enable_primary(struct drm_crtc *crtc)
a5c4d7bc
VS		 4763{
4764 struct drm_device *dev = crtc->dev;
87d4300a 4765 struct drm_i915_private *dev_priv = dev->dev_private;
a5c4d7bc
VS		 4766 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4767 int pipe = intel_crtc->pipe;
a5c4d7bc 4768
87d4300a
ML		 4769 /*
4770 * BDW signals flip done immediately if the plane
4771 * is disabled, even if the plane enable is already
4772 * armed to occur at the next vblank :(
4773 */
4774 if (IS_BROADWELL(dev))
4775 intel_wait_for_vblank(dev, pipe);
a5c4d7bc 4776
87d4300a
ML		 4777 /*
4778 * FIXME IPS should be fine as long as one plane is
4779 * enabled, but in practice it seems to have problems
4780 * when going from primary only to sprite only and vice
4781 * versa.
4782 */
a5c4d7bc
VS		 4783 hsw_enable_ips(intel_crtc);
4784
4785 mutex_lock(&dev->struct_mutex);
7ff0ebcc 4786 intel_fbc_update(dev);
a5c4d7bc 4787 mutex_unlock(&dev->struct_mutex);
f99d7069
DV		 4788
4789 /*
87d4300a
ML		 4790 * Gen2 reports pipe underruns whenever all planes are disabled.
4791 * So don't enable underrun reporting before at least some planes
4792 * are enabled.
4793 * FIXME: Need to fix the logic to work when we turn off all planes
4794 * but leave the pipe running.
f99d7069 4795 */
87d4300a
ML		 4796 if (IS_GEN2(dev))
4797 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4798
4799 /* Underruns don't raise interrupts, so check manually. */
4800 if (HAS_GMCH_DISPLAY(dev))
4801 i9xx_check_fifo_underruns(dev_priv);
a5c4d7bc
VS		 4802}
4803
87d4300a
ML		 4804/**
4805 * intel_pre_disable_primary - Perform operations before disabling primary plane
4806 * @crtc: the CRTC whose primary plane is to be disabled
4807 *
4808 * Performs potentially sleeping operations that must be done before the
4809 * primary plane is disabled, such as updating FBC and IPS. Note that this may
4810 * be called due to an explicit primary plane update, or due to an implicit
4811 * disable that is caused when a sprite plane completely hides the primary
4812 * plane.
4813 */
4814static void
4815intel_pre_disable_primary(struct drm_crtc *crtc)
a5c4d7bc
VS		 4816{
4817 struct drm_device *dev = crtc->dev;
4818 struct drm_i915_private *dev_priv = dev->dev_private;
4819 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4820 int pipe = intel_crtc->pipe;
a5c4d7bc 4821
87d4300a
ML		 4822 /*
4823 * Gen2 reports pipe underruns whenever all planes are disabled.
4824 * So diasble underrun reporting before all the planes get disabled.
4825 * FIXME: Need to fix the logic to work when we turn off all planes
4826 * but leave the pipe running.
4827 */
4828 if (IS_GEN2(dev))
4829 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
a5c4d7bc 4830
87d4300a
ML		 4831 /*
4832 * Vblank time updates from the shadow to live plane control register
4833 * are blocked if the memory self-refresh mode is active at that
4834 * moment. So to make sure the plane gets truly disabled, disable
4835 * first the self-refresh mode. The self-refresh enable bit in turn
4836 * will be checked/applied by the HW only at the next frame start
4837 * event which is after the vblank start event, so we need to have a
4838 * wait-for-vblank between disabling the plane and the pipe.
4839 */
4840 if (HAS_GMCH_DISPLAY(dev))
4841 intel_set_memory_cxsr(dev_priv, false);
4842
4843 mutex_lock(&dev->struct_mutex);
e35fef21 4844 if (dev_priv->fbc.crtc == intel_crtc)
7ff0ebcc 4845 intel_fbc_disable(dev);
87d4300a 4846 mutex_unlock(&dev->struct_mutex);
a5c4d7bc 4847
87d4300a
ML		 4848 /*
4849 * FIXME IPS should be fine as long as one plane is
4850 * enabled, but in practice it seems to have problems
4851 * when going from primary only to sprite only and vice
4852 * versa.
4853 */
a5c4d7bc 4854 hsw_disable_ips(intel_crtc);
87d4300a
ML		 4855}
4856
4857static void intel_crtc_enable_planes(struct drm_crtc *crtc)
4858{
87d4300a
ML		 4859 intel_enable_primary_hw_plane(crtc->primary, crtc);
4860 intel_enable_sprite_planes(crtc);
4861 intel_crtc_update_cursor(crtc, true);
87d4300a
ML		 4862
4863 intel_post_enable_primary(crtc);
4864}
4865
4866static void intel_crtc_disable_planes(struct drm_crtc *crtc)
4867{
4868 struct drm_device *dev = crtc->dev;
4869 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4870 struct intel_plane *intel_plane;
4871 int pipe = intel_crtc->pipe;
4872
4873 intel_crtc_wait_for_pending_flips(crtc);
4874
4875 intel_pre_disable_primary(crtc);
a5c4d7bc 4876
7cac945f 4877 intel_crtc_dpms_overlay_disable(intel_crtc);
27321ae8
ML		 4878 for_each_intel_plane(dev, intel_plane) {
4879 if (intel_plane->pipe == pipe) {
4880 struct drm_crtc *from = intel_plane->base.crtc;
4881
4882 intel_plane->disable_plane(&intel_plane->base,
4883 from ?: crtc, true);
4884 }
4885 }
f98551ae 4886
f99d7069
DV		 4887 /*
4888 * FIXME: Once we grow proper nuclear flip support out of this we need
4889 * to compute the mask of flip planes precisely. For the time being
4890 * consider this a flip to a NULL plane.
4891 */
4892 intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_ALL_MASK(pipe));
a5c4d7bc
VS		 4893}
4894
f67a559d
JB		 4895static void ironlake_crtc_enable(struct drm_crtc *crtc)
4896{
4897 struct drm_device *dev = crtc->dev;
4898 struct drm_i915_private *dev_priv = dev->dev_private;
4899 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 4900 struct intel_encoder *encoder;
f67a559d 4901 int pipe = intel_crtc->pipe;
f67a559d 4902
83d65738 4903 WARN_ON(!crtc->state->enable);
08a48469 4904
f67a559d
JB		 4905 if (intel_crtc->active)
4906 return;
4907
6e3c9717 4908 if (intel_crtc->config->has_pch_encoder)
b14b1055
DV		 4909 intel_prepare_shared_dpll(intel_crtc);
4910
6e3c9717 4911 if (intel_crtc->config->has_dp_encoder)
fe3cd48d 4912 intel_dp_set_m_n(intel_crtc, M1_N1);
29407aab
DV		 4913
4914 intel_set_pipe_timings(intel_crtc);
4915
6e3c9717 4916 if (intel_crtc->config->has_pch_encoder) {
29407aab 4917 intel_cpu_transcoder_set_m_n(intel_crtc,
6e3c9717 4918 &intel_crtc->config->fdi_m_n, NULL);
29407aab
DV		 4919 }
4920
4921 ironlake_set_pipeconf(crtc);
4922
f67a559d 4923 intel_crtc->active = true;
8664281b 4924
a72e4c9f
DV		 4925 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4926 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
8664281b 4927
f6736a1a 4928 for_each_encoder_on_crtc(dev, crtc, encoder)
952735ee
DV		 4929 if (encoder->pre_enable)
4930 encoder->pre_enable(encoder);
f67a559d 4931
6e3c9717 4932 if (intel_crtc->config->has_pch_encoder) {
fff367c7
DV		 4933 /* Note: FDI PLL enabling _must_ be done before we enable the
4934 * cpu pipes, hence this is separate from all the other fdi/pch
4935 * enabling. */
88cefb6c 4936 ironlake_fdi_pll_enable(intel_crtc);
46b6f814
DV		 4937 } else {
4938 assert_fdi_tx_disabled(dev_priv, pipe);
4939 assert_fdi_rx_disabled(dev_priv, pipe);
4940 }
f67a559d 4941
b074cec8 4942 ironlake_pfit_enable(intel_crtc);
f67a559d 4943
9c54c0dd
JB		 4944 /*
4945 * On ILK+ LUT must be loaded before the pipe is running but with
4946 * clocks enabled
4947 */
4948 intel_crtc_load_lut(crtc);
4949
f37fcc2a 4950 intel_update_watermarks(crtc);
e1fdc473 4951 intel_enable_pipe(intel_crtc);
f67a559d 4952
6e3c9717 4953 if (intel_crtc->config->has_pch_encoder)
f67a559d 4954 ironlake_pch_enable(crtc);
c98e9dcf 4955
f9b61ff6
DV		 4956 assert_vblank_disabled(crtc);
4957 drm_crtc_vblank_on(crtc);
4958
fa5c73b1
DV		 4959 for_each_encoder_on_crtc(dev, crtc, encoder)
4960 encoder->enable(encoder);
61b77ddd
DV		 4961
4962 if (HAS_PCH_CPT(dev))
a1520318 4963 cpt_verify_modeset(dev, intel_crtc->pipe);
6be4a607
JB		 4964}
4965
42db64ef
PZ		 4966/* IPS only exists on ULT machines and is tied to pipe A. */
4967static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
4968{
f5adf94e 4969 return HAS_IPS(crtc->base.dev) && crtc->pipe == PIPE_A;
42db64ef
PZ		 4970}
4971
e4916946
PZ		 4972/*
4973 * This implements the workaround described in the "notes" section of the mode
4974 * set sequence documentation. When going from no pipes or single pipe to
4975 * multiple pipes, and planes are enabled after the pipe, we need to wait at
4976 * least 2 vblanks on the first pipe before enabling planes on the second pipe.
4977 */
4978static void haswell_mode_set_planes_workaround(struct intel_crtc *crtc)
4979{
4980 struct drm_device *dev = crtc->base.dev;
4981 struct intel_crtc *crtc_it, *other_active_crtc = NULL;
4982
4983 /* We want to get the other_active_crtc only if there's only 1 other
4984 * active crtc. */
d3fcc808 4985 for_each_intel_crtc(dev, crtc_it) {
e4916946
PZ		 4986 if (!crtc_it->active || crtc_it == crtc)
4987 continue;
4988
4989 if (other_active_crtc)
4990 return;
4991
4992 other_active_crtc = crtc_it;
4993 }
4994 if (!other_active_crtc)
4995 return;
4996
4997 intel_wait_for_vblank(dev, other_active_crtc->pipe);
4998 intel_wait_for_vblank(dev, other_active_crtc->pipe);
4999}
5000
4f771f10
PZ		 5001static void haswell_crtc_enable(struct drm_crtc *crtc)
5002{
5003 struct drm_device *dev = crtc->dev;
5004 struct drm_i915_private *dev_priv = dev->dev_private;
5005 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5006 struct intel_encoder *encoder;
5007 int pipe = intel_crtc->pipe;
4f771f10 5008
83d65738 5009 WARN_ON(!crtc->state->enable);
4f771f10
PZ		 5010
5011 if (intel_crtc->active)
5012 return;
5013
df8ad70c
DV		 5014 if (intel_crtc_to_shared_dpll(intel_crtc))
5015 intel_enable_shared_dpll(intel_crtc);
5016
6e3c9717 5017 if (intel_crtc->config->has_dp_encoder)
fe3cd48d 5018 intel_dp_set_m_n(intel_crtc, M1_N1);
229fca97
DV		 5019
5020 intel_set_pipe_timings(intel_crtc);
5021
6e3c9717
ACO		 5022 if (intel_crtc->config->cpu_transcoder != TRANSCODER_EDP) {
5023 I915_WRITE(PIPE_MULT(intel_crtc->config->cpu_transcoder),
5024 intel_crtc->config->pixel_multiplier - 1);
ebb69c95
CT		 5025 }
5026
6e3c9717 5027 if (intel_crtc->config->has_pch_encoder) {
229fca97 5028 intel_cpu_transcoder_set_m_n(intel_crtc,
6e3c9717 5029 &intel_crtc->config->fdi_m_n, NULL);
229fca97
DV		 5030 }
5031
5032 haswell_set_pipeconf(crtc);
5033
5034 intel_set_pipe_csc(crtc);
5035
4f771f10 5036 intel_crtc->active = true;
8664281b 5037
a72e4c9f 5038 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4f771f10
PZ		 5039 for_each_encoder_on_crtc(dev, crtc, encoder)
5040 if (encoder->pre_enable)
5041 encoder->pre_enable(encoder);
5042
6e3c9717 5043 if (intel_crtc->config->has_pch_encoder) {
a72e4c9f
DV		 5044 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5045 true);
4fe9467d
ID		 5046 dev_priv->display.fdi_link_train(crtc);
5047 }
5048
1f544388 5049 intel_ddi_enable_pipe_clock(intel_crtc);
4f771f10 5050
ff6d9f55 5051 if (INTEL_INFO(dev)->gen == 9)
a1b2278e 5052 skylake_pfit_update(intel_crtc, 1);
ff6d9f55 5053 else if (INTEL_INFO(dev)->gen < 9)
bd2e244f 5054 ironlake_pfit_enable(intel_crtc);
ff6d9f55
JB		 5055 else
5056 MISSING_CASE(INTEL_INFO(dev)->gen);
4f771f10
PZ		 5057
5058 /*
5059 * On ILK+ LUT must be loaded before the pipe is running but with
5060 * clocks enabled
5061 */
5062 intel_crtc_load_lut(crtc);
5063
1f544388 5064 intel_ddi_set_pipe_settings(crtc);
8228c251 5065 intel_ddi_enable_transcoder_func(crtc);
4f771f10 5066
f37fcc2a 5067 intel_update_watermarks(crtc);
e1fdc473 5068 intel_enable_pipe(intel_crtc);
42db64ef 5069
6e3c9717 5070 if (intel_crtc->config->has_pch_encoder)
1507e5bd 5071 lpt_pch_enable(crtc);
4f771f10 5072
6e3c9717 5073 if (intel_crtc->config->dp_encoder_is_mst)
0e32b39c
DA		 5074 intel_ddi_set_vc_payload_alloc(crtc, true);
5075
f9b61ff6
DV		 5076 assert_vblank_disabled(crtc);
5077 drm_crtc_vblank_on(crtc);
5078
8807e55b 5079 for_each_encoder_on_crtc(dev, crtc, encoder) {
4f771f10 5080 encoder->enable(encoder);
8807e55b
JN		 5081 intel_opregion_notify_encoder(encoder, true);
5082 }
4f771f10 5083
e4916946
PZ		 5084 /* If we change the relative order between pipe/planes enabling, we need
5085 * to change the workaround. */
5086 haswell_mode_set_planes_workaround(intel_crtc);
4f771f10
PZ		 5087}
5088
3f8dce3a
DV		 5089static void ironlake_pfit_disable(struct intel_crtc *crtc)
5090{
5091 struct drm_device *dev = crtc->base.dev;
5092 struct drm_i915_private *dev_priv = dev->dev_private;
5093 int pipe = crtc->pipe;
5094
5095 /* To avoid upsetting the power well on haswell only disable the pfit if
5096 * it's in use. The hw state code will make sure we get this right. */
6e3c9717 5097 if (crtc->config->pch_pfit.enabled) {
3f8dce3a
DV		 5098 I915_WRITE(PF_CTL(pipe), 0);
5099 I915_WRITE(PF_WIN_POS(pipe), 0);
5100 I915_WRITE(PF_WIN_SZ(pipe), 0);
5101 }
5102}
5103
6be4a607
JB		 5104static void ironlake_crtc_disable(struct drm_crtc *crtc)
5105{
5106 struct drm_device *dev = crtc->dev;
5107 struct drm_i915_private *dev_priv = dev->dev_private;
5108 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 5109 struct intel_encoder *encoder;
6be4a607 5110 int pipe = intel_crtc->pipe;
5eddb70b 5111 u32 reg, temp;
b52eb4dc 5112
f7abfe8b
CW		 5113 if (!intel_crtc->active)
5114 return;
5115
ea9d758d
DV		 5116 for_each_encoder_on_crtc(dev, crtc, encoder)
5117 encoder->disable(encoder);
5118
f9b61ff6
DV		 5119 drm_crtc_vblank_off(crtc);
5120 assert_vblank_disabled(crtc);
5121
6e3c9717 5122 if (intel_crtc->config->has_pch_encoder)
a72e4c9f 5123 intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
d925c59a 5124
575f7ab7 5125 intel_disable_pipe(intel_crtc);
32f9d658 5126
3f8dce3a 5127 ironlake_pfit_disable(intel_crtc);
2c07245f 5128
bf49ec8c
DV		 5129 for_each_encoder_on_crtc(dev, crtc, encoder)
5130 if (encoder->post_disable)
5131 encoder->post_disable(encoder);
2c07245f 5132
6e3c9717 5133 if (intel_crtc->config->has_pch_encoder) {
d925c59a 5134 ironlake_fdi_disable(crtc);
913d8d11 5135
d925c59a 5136 ironlake_disable_pch_transcoder(dev_priv, pipe);
6be4a607 5137
d925c59a
DV		 5138 if (HAS_PCH_CPT(dev)) {
5139 /* disable TRANS_DP_CTL */
5140 reg = TRANS_DP_CTL(pipe);
5141 temp = I915_READ(reg);
5142 temp &= ~(TRANS_DP_OUTPUT_ENABLE |
5143 TRANS_DP_PORT_SEL_MASK);
5144 temp |= TRANS_DP_PORT_SEL_NONE;
5145 I915_WRITE(reg, temp);
5146
5147 /* disable DPLL_SEL */
5148 temp = I915_READ(PCH_DPLL_SEL);
11887397 5149 temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
d925c59a 5150 I915_WRITE(PCH_DPLL_SEL, temp);
9db4a9c7 5151 }
e3421a18 5152
d925c59a 5153 /* disable PCH DPLL */
e72f9fbf 5154 intel_disable_shared_dpll(intel_crtc);
8db9d77b 5155
d925c59a
DV		 5156 ironlake_fdi_pll_disable(intel_crtc);
5157 }
6b383a7f 5158
f7abfe8b 5159 intel_crtc->active = false;
46ba614c 5160 intel_update_watermarks(crtc);
d1ebd816
BW		 5161
5162 mutex_lock(&dev->struct_mutex);
7ff0ebcc 5163 intel_fbc_update(dev);
d1ebd816 5164 mutex_unlock(&dev->struct_mutex);
6be4a607 5165}
1b3c7a47 5166
4f771f10 5167static void haswell_crtc_disable(struct drm_crtc *crtc)
ee7b9f93 5168{
4f771f10
PZ		 5169 struct drm_device *dev = crtc->dev;
5170 struct drm_i915_private *dev_priv = dev->dev_private;
ee7b9f93 5171 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4f771f10 5172 struct intel_encoder *encoder;
6e3c9717 5173 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
ee7b9f93 5174
4f771f10
PZ		 5175 if (!intel_crtc->active)
5176 return;
5177
8807e55b
JN		 5178 for_each_encoder_on_crtc(dev, crtc, encoder) {
5179 intel_opregion_notify_encoder(encoder, false);
4f771f10 5180 encoder->disable(encoder);
8807e55b 5181 }
4f771f10 5182
f9b61ff6
DV		 5183 drm_crtc_vblank_off(crtc);
5184 assert_vblank_disabled(crtc);
5185
6e3c9717 5186 if (intel_crtc->config->has_pch_encoder)
a72e4c9f
DV		 5187 intel_set_pch_fifo_underrun_reporting(dev_priv, TRANSCODER_A,
5188 false);
575f7ab7 5189 intel_disable_pipe(intel_crtc);
4f771f10 5190
6e3c9717 5191 if (intel_crtc->config->dp_encoder_is_mst)
a4bf214f
VS		 5192 intel_ddi_set_vc_payload_alloc(crtc, false);
5193
ad80a810 5194 intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
4f771f10 5195
ff6d9f55 5196 if (INTEL_INFO(dev)->gen == 9)
a1b2278e 5197 skylake_pfit_update(intel_crtc, 0);
ff6d9f55 5198 else if (INTEL_INFO(dev)->gen < 9)
bd2e244f 5199 ironlake_pfit_disable(intel_crtc);
ff6d9f55
JB		 5200 else
5201 MISSING_CASE(INTEL_INFO(dev)->gen);
4f771f10 5202
1f544388 5203 intel_ddi_disable_pipe_clock(intel_crtc);
4f771f10 5204
6e3c9717 5205 if (intel_crtc->config->has_pch_encoder) {
ab4d966c 5206 lpt_disable_pch_transcoder(dev_priv);
1ad960f2 5207 intel_ddi_fdi_disable(crtc);
83616634 5208 }
4f771f10 5209
97b040aa
ID		 5210 for_each_encoder_on_crtc(dev, crtc, encoder)
5211 if (encoder->post_disable)
5212 encoder->post_disable(encoder);
5213
4f771f10 5214 intel_crtc->active = false;
46ba614c 5215 intel_update_watermarks(crtc);
4f771f10
PZ		 5216
5217 mutex_lock(&dev->struct_mutex);
7ff0ebcc 5218 intel_fbc_update(dev);
4f771f10 5219 mutex_unlock(&dev->struct_mutex);
df8ad70c
DV		 5220
5221 if (intel_crtc_to_shared_dpll(intel_crtc))
5222 intel_disable_shared_dpll(intel_crtc);
4f771f10
PZ		 5223}
5224
ee7b9f93
JB		 5225static void ironlake_crtc_off(struct drm_crtc *crtc)
5226{
5227 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
e72f9fbf 5228 intel_put_shared_dpll(intel_crtc);
ee7b9f93
JB		 5229}
5230
6441ab5f 5231
2dd24552
JB		 5232static void i9xx_pfit_enable(struct intel_crtc *crtc)
5233{
5234 struct drm_device *dev = crtc->base.dev;
5235 struct drm_i915_private *dev_priv = dev->dev_private;
6e3c9717 5236 struct intel_crtc_state *pipe_config = crtc->config;
2dd24552 5237
681a8504 5238 if (!pipe_config->gmch_pfit.control)
2dd24552
JB		 5239 return;
5240
2dd24552 5241 /*
c0b03411
DV		 5242 * The panel fitter should only be adjusted whilst the pipe is disabled,
5243 * according to register description and PRM.
2dd24552 5244 */
c0b03411
DV		 5245 WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
5246 assert_pipe_disabled(dev_priv, crtc->pipe);
2dd24552 5247
b074cec8
JB		 5248 I915_WRITE(PFIT_PGM_RATIOS, pipe_config->gmch_pfit.pgm_ratios);
5249 I915_WRITE(PFIT_CONTROL, pipe_config->gmch_pfit.control);
5a80c45c
DV		 5250
5251 /* Border color in case we don't scale up to the full screen. Black by
5252 * default, change to something else for debugging. */
5253 I915_WRITE(BCLRPAT(crtc->pipe), 0);
2dd24552
JB		 5254}
5255
d05410f9
DA		 5256static enum intel_display_power_domain port_to_power_domain(enum port port)
5257{
5258 switch (port) {
5259 case PORT_A:
5260 return POWER_DOMAIN_PORT_DDI_A_4_LANES;
5261 case PORT_B:
5262 return POWER_DOMAIN_PORT_DDI_B_4_LANES;
5263 case PORT_C:
5264 return POWER_DOMAIN_PORT_DDI_C_4_LANES;
5265 case PORT_D:
5266 return POWER_DOMAIN_PORT_DDI_D_4_LANES;
5267 default:
5268 WARN_ON_ONCE(1);
5269 return POWER_DOMAIN_PORT_OTHER;
5270 }
5271}
5272
77d22dca
ID		 5273#define for_each_power_domain(domain, mask) \
5274 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
5275 if ((1 << (domain)) & (mask))
5276
319be8ae
ID		 5277enum intel_display_power_domain
5278intel_display_port_power_domain(struct intel_encoder *intel_encoder)
5279{
5280 struct drm_device *dev = intel_encoder->base.dev;
5281 struct intel_digital_port *intel_dig_port;
5282
5283 switch (intel_encoder->type) {
5284 case INTEL_OUTPUT_UNKNOWN:
5285 /* Only DDI platforms should ever use this output type */
5286 WARN_ON_ONCE(!HAS_DDI(dev));
5287 case INTEL_OUTPUT_DISPLAYPORT:
5288 case INTEL_OUTPUT_HDMI:
5289 case INTEL_OUTPUT_EDP:
5290 intel_dig_port = enc_to_dig_port(&intel_encoder->base);
d05410f9 5291 return port_to_power_domain(intel_dig_port->port);
0e32b39c
DA		 5292 case INTEL_OUTPUT_DP_MST:
5293 intel_dig_port = enc_to_mst(&intel_encoder->base)->primary;
5294 return port_to_power_domain(intel_dig_port->port);
319be8ae
ID		 5295 case INTEL_OUTPUT_ANALOG:
5296 return POWER_DOMAIN_PORT_CRT;
5297 case INTEL_OUTPUT_DSI:
5298 return POWER_DOMAIN_PORT_DSI;
5299 default:
5300 return POWER_DOMAIN_PORT_OTHER;
5301 }
5302}
5303
5304static unsigned long get_crtc_power_domains(struct drm_crtc *crtc)
77d22dca 5305{
319be8ae
ID		 5306 struct drm_device *dev = crtc->dev;
5307 struct intel_encoder *intel_encoder;
5308 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5309 enum pipe pipe = intel_crtc->pipe;
77d22dca
ID		 5310 unsigned long mask;
5311 enum transcoder transcoder;
5312
5313 transcoder = intel_pipe_to_cpu_transcoder(dev->dev_private, pipe);
5314
5315 mask = BIT(POWER_DOMAIN_PIPE(pipe));
5316 mask |= BIT(POWER_DOMAIN_TRANSCODER(transcoder));
6e3c9717
ACO		 5317 if (intel_crtc->config->pch_pfit.enabled ||
5318 intel_crtc->config->pch_pfit.force_thru)
77d22dca
ID		 5319 mask |= BIT(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
5320
319be8ae
ID		 5321 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
5322 mask |= BIT(intel_display_port_power_domain(intel_encoder));
5323
77d22dca
ID		 5324 return mask;
5325}
5326
679dacd4 5327static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
77d22dca 5328{
679dacd4 5329 struct drm_device *dev = state->dev;
77d22dca
ID		 5330 struct drm_i915_private *dev_priv = dev->dev_private;
5331 unsigned long pipe_domains[I915_MAX_PIPES] = { 0, };
5332 struct intel_crtc *crtc;
5333
5334 /*
5335 * First get all needed power domains, then put all unneeded, to avoid
5336 * any unnecessary toggling of the power wells.
5337 */
d3fcc808 5338 for_each_intel_crtc(dev, crtc) {
77d22dca
ID		 5339 enum intel_display_power_domain domain;
5340
83d65738 5341 if (!crtc->base.state->enable)
77d22dca
ID		 5342 continue;
5343
319be8ae 5344 pipe_domains[crtc->pipe] = get_crtc_power_domains(&crtc->base);
77d22dca
ID		 5345
5346 for_each_power_domain(domain, pipe_domains[crtc->pipe])
5347 intel_display_power_get(dev_priv, domain);
5348 }
5349
50f6e502 5350 if (dev_priv->display.modeset_global_resources)
679dacd4 5351 dev_priv->display.modeset_global_resources(state);
50f6e502 5352
d3fcc808 5353 for_each_intel_crtc(dev, crtc) {
77d22dca
ID		 5354 enum intel_display_power_domain domain;
5355
5356 for_each_power_domain(domain, crtc->enabled_power_domains)
5357 intel_display_power_put(dev_priv, domain);
5358
5359 crtc->enabled_power_domains = pipe_domains[crtc->pipe];
5360 }
5361
5362 intel_display_set_init_power(dev_priv, false);
5363}
5364
f8437dd1
VK		 5365void broxton_set_cdclk(struct drm_device *dev, int frequency)
5366{
5367 struct drm_i915_private *dev_priv = dev->dev_private;
5368 uint32_t divider;
5369 uint32_t ratio;
5370 uint32_t current_freq;
5371 int ret;
5372
5373 /* frequency = 19.2MHz * ratio / 2 / div{1,1.5,2,4} */
5374 switch (frequency) {
5375 case 144000:
5376 divider = BXT_CDCLK_CD2X_DIV_SEL_4;
5377 ratio = BXT_DE_PLL_RATIO(60);
5378 break;
5379 case 288000:
5380 divider = BXT_CDCLK_CD2X_DIV_SEL_2;
5381 ratio = BXT_DE_PLL_RATIO(60);
5382 break;
5383 case 384000:
5384 divider = BXT_CDCLK_CD2X_DIV_SEL_1_5;
5385 ratio = BXT_DE_PLL_RATIO(60);
5386 break;
5387 case 576000:
5388 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5389 ratio = BXT_DE_PLL_RATIO(60);
5390 break;
5391 case 624000:
5392 divider = BXT_CDCLK_CD2X_DIV_SEL_1;
5393 ratio = BXT_DE_PLL_RATIO(65);
5394 break;
5395 case 19200:
5396 /*
5397 * Bypass frequency with DE PLL disabled. Init ratio, divider
5398 * to suppress GCC warning.
5399 */
5400 ratio = 0;
5401 divider = 0;
5402 break;
5403 default:
5404 DRM_ERROR("unsupported CDCLK freq %d", frequency);
5405
5406 return;
5407 }
5408
5409 mutex_lock(&dev_priv->rps.hw_lock);
5410 /* Inform power controller of upcoming frequency change */
5411 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5412 0x80000000);
5413 mutex_unlock(&dev_priv->rps.hw_lock);
5414
5415 if (ret) {
5416 DRM_ERROR("PCode CDCLK freq change notify failed (err %d, freq %d)\n",
5417 ret, frequency);
5418 return;
5419 }
5420
5421 current_freq = I915_READ(CDCLK_CTL) & CDCLK_FREQ_DECIMAL_MASK;
5422 /* convert from .1 fixpoint MHz with -1MHz offset to kHz */
5423 current_freq = current_freq * 500 + 1000;
5424
5425 /*
5426 * DE PLL has to be disabled when
5427 * - setting to 19.2MHz (bypass, PLL isn't used)
5428 * - before setting to 624MHz (PLL needs toggling)
5429 * - before setting to any frequency from 624MHz (PLL needs toggling)
5430 */
5431 if (frequency == 19200 || frequency == 624000 ||
5432 current_freq == 624000) {
5433 I915_WRITE(BXT_DE_PLL_ENABLE, ~BXT_DE_PLL_PLL_ENABLE);
5434 /* Timeout 200us */
5435 if (wait_for(!(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK),
5436 1))
5437 DRM_ERROR("timout waiting for DE PLL unlock\n");
5438 }
5439
5440 if (frequency != 19200) {
5441 uint32_t val;
5442
5443 val = I915_READ(BXT_DE_PLL_CTL);
5444 val &= ~BXT_DE_PLL_RATIO_MASK;
5445 val |= ratio;
5446 I915_WRITE(BXT_DE_PLL_CTL, val);
5447
5448 I915_WRITE(BXT_DE_PLL_ENABLE, BXT_DE_PLL_PLL_ENABLE);
5449 /* Timeout 200us */
5450 if (wait_for(I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_LOCK, 1))
5451 DRM_ERROR("timeout waiting for DE PLL lock\n");
5452
5453 val = I915_READ(CDCLK_CTL);
5454 val &= ~BXT_CDCLK_CD2X_DIV_SEL_MASK;
5455 val |= divider;
5456 /*
5457 * Disable SSA Precharge when CD clock frequency < 500 MHz,
5458 * enable otherwise.
5459 */
5460 val &= ~BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5461 if (frequency >= 500000)
5462 val |= BXT_CDCLK_SSA_PRECHARGE_ENABLE;
5463
5464 val &= ~CDCLK_FREQ_DECIMAL_MASK;
5465 /* convert from kHz to .1 fixpoint MHz with -1MHz offset */
5466 val |= (frequency - 1000) / 500;
5467 I915_WRITE(CDCLK_CTL, val);
5468 }
5469
5470 mutex_lock(&dev_priv->rps.hw_lock);
5471 ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ,
5472 DIV_ROUND_UP(frequency, 25000));
5473 mutex_unlock(&dev_priv->rps.hw_lock);
5474
5475 if (ret) {
5476 DRM_ERROR("PCode CDCLK freq set failed, (err %d, freq %d)\n",
5477 ret, frequency);
5478 return;
5479 }
5480
5481 dev_priv->cdclk_freq = frequency;
5482}
5483
5484void broxton_init_cdclk(struct drm_device *dev)
5485{
5486 struct drm_i915_private *dev_priv = dev->dev_private;
5487 uint32_t val;
5488
5489 /*
5490 * NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
5491 * or else the reset will hang because there is no PCH to respond.
5492 * Move the handshake programming to initialization sequence.
5493 * Previously was left up to BIOS.
5494 */
5495 val = I915_READ(HSW_NDE_RSTWRN_OPT);
5496 val &= ~RESET_PCH_HANDSHAKE_ENABLE;
5497 I915_WRITE(HSW_NDE_RSTWRN_OPT, val);
5498
5499 /* Enable PG1 for cdclk */
5500 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5501
5502 /* check if cd clock is enabled */
5503 if (I915_READ(BXT_DE_PLL_ENABLE) & BXT_DE_PLL_PLL_ENABLE) {
5504 DRM_DEBUG_KMS("Display already initialized\n");
5505 return;
5506 }
5507
5508 /*
5509 * FIXME:
5510 * - The initial CDCLK needs to be read from VBT.
5511 * Need to make this change after VBT has changes for BXT.
5512 * - check if setting the max (or any) cdclk freq is really necessary
5513 * here, it belongs to modeset time
5514 */
5515 broxton_set_cdclk(dev, 624000);
5516
5517 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) | DBUF_POWER_REQUEST);
22e02c0b
VS		 5518 POSTING_READ(DBUF_CTL);
5519
f8437dd1
VK		 5520 udelay(10);
5521
5522 if (!(I915_READ(DBUF_CTL) & DBUF_POWER_STATE))
5523 DRM_ERROR("DBuf power enable timeout!\n");
5524}
5525
5526void broxton_uninit_cdclk(struct drm_device *dev)
5527{
5528 struct drm_i915_private *dev_priv = dev->dev_private;
5529
5530 I915_WRITE(DBUF_CTL, I915_READ(DBUF_CTL) & ~DBUF_POWER_REQUEST);
22e02c0b
VS		 5531 POSTING_READ(DBUF_CTL);
5532
f8437dd1
VK		 5533 udelay(10);
5534
5535 if (I915_READ(DBUF_CTL) & DBUF_POWER_STATE)
5536 DRM_ERROR("DBuf power disable timeout!\n");
5537
5538 /* Set minimum (bypass) frequency, in effect turning off the DE PLL */
5539 broxton_set_cdclk(dev, 19200);
5540
5541 intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS);
5542}
5543
dfcab17e 5544/* returns HPLL frequency in kHz */
f8bf63fd 5545static int valleyview_get_vco(struct drm_i915_private *dev_priv)
30a970c6 5546{
586f49dc 5547 int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
30a970c6 5548
586f49dc
JB		 5549 /* Obtain SKU information */
5550 mutex_lock(&dev_priv->dpio_lock);
5551 hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
5552 CCK_FUSE_HPLL_FREQ_MASK;
5553 mutex_unlock(&dev_priv->dpio_lock);
30a970c6 5554
dfcab17e 5555 return vco_freq[hpll_freq] * 1000;
30a970c6
JB		 5556}
5557
f8bf63fd
VS		 5558static void vlv_update_cdclk(struct drm_device *dev)
5559{
5560 struct drm_i915_private *dev_priv = dev->dev_private;
5561
164dfd28 5562 dev_priv->cdclk_freq = dev_priv->display.get_display_clock_speed(dev);
43dc52c3 5563 DRM_DEBUG_DRIVER("Current CD clock rate: %d kHz\n",
164dfd28 5564 dev_priv->cdclk_freq);
f8bf63fd
VS		 5565
5566 /*
5567 * Program the gmbus_freq based on the cdclk frequency.
5568 * BSpec erroneously claims we should aim for 4MHz, but
5569 * in fact 1MHz is the correct frequency.
5570 */
164dfd28 5571 I915_WRITE(GMBUSFREQ_VLV, DIV_ROUND_UP(dev_priv->cdclk_freq, 1000));
f8bf63fd
VS		 5572}
5573
30a970c6
JB		 5574/* Adjust CDclk dividers to allow high res or save power if possible */
5575static void valleyview_set_cdclk(struct drm_device *dev, int cdclk)
5576{
5577 struct drm_i915_private *dev_priv = dev->dev_private;
5578 u32 val, cmd;
5579
164dfd28
VK		 5580 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5581 != dev_priv->cdclk_freq);
d60c4473 5582
dfcab17e 5583 if (cdclk >= 320000) /* jump to highest voltage for 400MHz too */
30a970c6 5584 cmd = 2;
dfcab17e 5585 else if (cdclk == 266667)
30a970c6
JB		 5586 cmd = 1;
5587 else
5588 cmd = 0;
5589
5590 mutex_lock(&dev_priv->rps.hw_lock);
5591 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5592 val &= ~DSPFREQGUAR_MASK;
5593 val |= (cmd << DSPFREQGUAR_SHIFT);
5594 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5595 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5596 DSPFREQSTAT_MASK) == (cmd << DSPFREQSTAT_SHIFT),
5597 50)) {
5598 DRM_ERROR("timed out waiting for CDclk change\n");
5599 }
5600 mutex_unlock(&dev_priv->rps.hw_lock);
5601
dfcab17e 5602 if (cdclk == 400000) {
6bcda4f0 5603 u32 divider;
30a970c6 5604
6bcda4f0 5605 divider = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
30a970c6
JB		 5606
5607 mutex_lock(&dev_priv->dpio_lock);
5608 /* adjust cdclk divider */
5609 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
9cf33db5 5610 val &= ~DISPLAY_FREQUENCY_VALUES;
30a970c6
JB		 5611 val |= divider;
5612 vlv_cck_write(dev_priv, CCK_DISPLAY_CLOCK_CONTROL, val);
a877e801
VS		 5613
5614 if (wait_for((vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL) &
5615 DISPLAY_FREQUENCY_STATUS) == (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
5616 50))
5617 DRM_ERROR("timed out waiting for CDclk change\n");
30a970c6
JB		 5618 mutex_unlock(&dev_priv->dpio_lock);
5619 }
5620
5621 mutex_lock(&dev_priv->dpio_lock);
5622 /* adjust self-refresh exit latency value */
5623 val = vlv_bunit_read(dev_priv, BUNIT_REG_BISOC);
5624 val &= ~0x7f;
5625
5626 /*
5627 * For high bandwidth configs, we set a higher latency in the bunit
5628 * so that the core display fetch happens in time to avoid underruns.
5629 */
dfcab17e 5630 if (cdclk == 400000)
30a970c6
JB		 5631 val |= 4500 / 250; /* 4.5 usec */
5632 else
5633 val |= 3000 / 250; /* 3.0 usec */
5634 vlv_bunit_write(dev_priv, BUNIT_REG_BISOC, val);
5635 mutex_unlock(&dev_priv->dpio_lock);
5636
f8bf63fd 5637 vlv_update_cdclk(dev);
30a970c6
JB		 5638}
5639
383c5a6a
VS		 5640static void cherryview_set_cdclk(struct drm_device *dev, int cdclk)
5641{
5642 struct drm_i915_private *dev_priv = dev->dev_private;
5643 u32 val, cmd;
5644
164dfd28
VK		 5645 WARN_ON(dev_priv->display.get_display_clock_speed(dev)
5646 != dev_priv->cdclk_freq);
383c5a6a
VS		 5647
5648 switch (cdclk) {
383c5a6a
VS		 5649 case 333333:
5650 case 320000:
383c5a6a 5651 case 266667:
383c5a6a 5652 case 200000:
383c5a6a
VS		 5653 break;
5654 default:
5f77eeb0 5655 MISSING_CASE(cdclk);
383c5a6a
VS		 5656 return;
5657 }
5658
9d0d3fda
VS		 5659 /*
5660 * Specs are full of misinformation, but testing on actual
5661 * hardware has shown that we just need to write the desired
5662 * CCK divider into the Punit register.
5663 */
5664 cmd = DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, cdclk) - 1;
5665
383c5a6a
VS		 5666 mutex_lock(&dev_priv->rps.hw_lock);
5667 val = vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ);
5668 val &= ~DSPFREQGUAR_MASK_CHV;
5669 val |= (cmd << DSPFREQGUAR_SHIFT_CHV);
5670 vlv_punit_write(dev_priv, PUNIT_REG_DSPFREQ, val);
5671 if (wait_for((vlv_punit_read(dev_priv, PUNIT_REG_DSPFREQ) &
5672 DSPFREQSTAT_MASK_CHV) == (cmd << DSPFREQSTAT_SHIFT_CHV),
5673 50)) {
5674 DRM_ERROR("timed out waiting for CDclk change\n");
5675 }
5676 mutex_unlock(&dev_priv->rps.hw_lock);
5677
5678 vlv_update_cdclk(dev);
5679}
5680
30a970c6
JB		 5681static int valleyview_calc_cdclk(struct drm_i915_private *dev_priv,
5682 int max_pixclk)
5683{
6bcda4f0 5684 int freq_320 = (dev_priv->hpll_freq << 1) % 320000 != 0 ? 333333 : 320000;
6cca3195 5685 int limit = IS_CHERRYVIEW(dev_priv) ? 95 : 90;
29dc7ef3 5686
30a970c6
JB		 5687 /*
5688 * Really only a few cases to deal with, as only 4 CDclks are supported:
5689 * 200MHz
5690 * 267MHz
29dc7ef3 5691 * 320/333MHz (depends on HPLL freq)
6cca3195
VS		 5692 * 400MHz (VLV only)
5693 * So we check to see whether we're above 90% (VLV) or 95% (CHV)
5694 * of the lower bin and adjust if needed.
e37c67a1
VS		 5695 *
5696 * We seem to get an unstable or solid color picture at 200MHz.
5697 * Not sure what's wrong. For now use 200MHz only when all pipes
5698 * are off.
30a970c6 5699 */
6cca3195
VS		 5700 if (!IS_CHERRYVIEW(dev_priv) &&
5701 max_pixclk > freq_320*limit/100)
dfcab17e 5702 return 400000;
6cca3195 5703 else if (max_pixclk > 266667*limit/100)
29dc7ef3 5704 return freq_320;
e37c67a1 5705 else if (max_pixclk > 0)
dfcab17e 5706 return 266667;
e37c67a1
VS		 5707 else
5708 return 200000;
30a970c6
JB		 5709}
5710
f8437dd1
VK		 5711static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
5712 int max_pixclk)
5713{
5714 /*
5715 * FIXME:
5716 * - remove the guardband, it's not needed on BXT
5717 * - set 19.2MHz bypass frequency if there are no active pipes
5718 */
5719 if (max_pixclk > 576000*9/10)
5720 return 624000;
5721 else if (max_pixclk > 384000*9/10)
5722 return 576000;
5723 else if (max_pixclk > 288000*9/10)
5724 return 384000;
5725 else if (max_pixclk > 144000*9/10)
5726 return 288000;
5727 else
5728 return 144000;
5729}
5730
2f2d7aa1 5731/* compute the max pixel clock for new configuration */
304603f4 5732static int intel_mode_max_pixclk(struct drm_atomic_state *state)
30a970c6 5733{
304603f4 5734 struct drm_device *dev = state->dev;
30a970c6 5735 struct intel_crtc *intel_crtc;
304603f4 5736 struct intel_crtc_state *crtc_state;
30a970c6
JB		 5737 int max_pixclk = 0;
5738
d3fcc808 5739 for_each_intel_crtc(dev, intel_crtc) {
304603f4
ACO		 5740 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
5741 if (IS_ERR(crtc_state))
5742 return PTR_ERR(crtc_state);
5743
5744 if (!crtc_state->base.enable)
5745 continue;
5746
5747 max_pixclk = max(max_pixclk,
5748 crtc_state->base.adjusted_mode.crtc_clock);
30a970c6
JB		 5749 }
5750
5751 return max_pixclk;
5752}
5753
0a9ab303 5754static int valleyview_modeset_global_pipes(struct drm_atomic_state *state)
30a970c6 5755{
304603f4 5756 struct drm_i915_private *dev_priv = to_i915(state->dev);
0a9ab303
ACO		 5757 struct drm_crtc *crtc;
5758 struct drm_crtc_state *crtc_state;
304603f4 5759 int max_pixclk = intel_mode_max_pixclk(state);
0a9ab303 5760 int cdclk, i;
30a970c6 5761
304603f4
ACO		 5762 if (max_pixclk < 0)
5763 return max_pixclk;
30a970c6 5764
f8437dd1
VK		 5765 if (IS_VALLEYVIEW(dev_priv))
5766 cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
5767 else
5768 cdclk = broxton_calc_cdclk(dev_priv, max_pixclk);
5769
5770 if (cdclk == dev_priv->cdclk_freq)
304603f4 5771 return 0;
30a970c6 5772
0a9ab303
ACO		 5773 /* add all active pipes to the state */
5774 for_each_crtc(state->dev, crtc) {
5775 if (!crtc->state->enable)
5776 continue;
5777
5778 crtc_state = drm_atomic_get_crtc_state(state, crtc);
5779 if (IS_ERR(crtc_state))
5780 return PTR_ERR(crtc_state);
5781 }
5782
2f2d7aa1 5783 /* disable/enable all currently active pipes while we change cdclk */
0a9ab303
ACO		 5784 for_each_crtc_in_state(state, crtc, crtc_state, i)
5785 if (crtc_state->enable)
5786 crtc_state->mode_changed = true;
304603f4
ACO		 5787
5788 return 0;
30a970c6
JB		 5789}
5790
1e69cd74
VS		 5791static void vlv_program_pfi_credits(struct drm_i915_private *dev_priv)
5792{
5793 unsigned int credits, default_credits;
5794
5795 if (IS_CHERRYVIEW(dev_priv))
5796 default_credits = PFI_CREDIT(12);
5797 else
5798 default_credits = PFI_CREDIT(8);
5799
164dfd28 5800 if (DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 1000) >= dev_priv->rps.cz_freq) {
1e69cd74
VS		 5801 /* CHV suggested value is 31 or 63 */
5802 if (IS_CHERRYVIEW(dev_priv))
5803 credits = PFI_CREDIT_31;
5804 else
5805 credits = PFI_CREDIT(15);
5806 } else {
5807 credits = default_credits;
5808 }
5809
5810 /*
5811 * WA - write default credits before re-programming
5812 * FIXME: should we also set the resend bit here?
5813 */
5814 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5815 default_credits);
5816
5817 I915_WRITE(GCI_CONTROL, VGA_FAST_MODE_DISABLE |
5818 credits | PFI_CREDIT_RESEND);
5819
5820 /*
5821 * FIXME is this guaranteed to clear
5822 * immediately or should we poll for it?
5823 */
5824 WARN_ON(I915_READ(GCI_CONTROL) & PFI_CREDIT_RESEND);
5825}
5826
679dacd4 5827static void valleyview_modeset_global_resources(struct drm_atomic_state *state)
30a970c6 5828{
679dacd4 5829 struct drm_device *dev = state->dev;
30a970c6 5830 struct drm_i915_private *dev_priv = dev->dev_private;
304603f4
ACO		 5831 int max_pixclk = intel_mode_max_pixclk(state);
5832 int req_cdclk;
5833
5834 /* The only reason this can fail is if we fail to add the crtc_state
5835 * to the atomic state. But that can't happen since the call to
5836 * intel_mode_max_pixclk() in valleyview_modeset_global_pipes() (which
5837 * can't have failed otherwise the mode set would be aborted) added all
5838 * the states already. */
5839 if (WARN_ON(max_pixclk < 0))
5840 return;
30a970c6 5841
304603f4 5842 req_cdclk = valleyview_calc_cdclk(dev_priv, max_pixclk);
30a970c6 5843
164dfd28 5844 if (req_cdclk != dev_priv->cdclk_freq) {
738c05c0
ID		 5845 /*
5846 * FIXME: We can end up here with all power domains off, yet
5847 * with a CDCLK frequency other than the minimum. To account
5848 * for this take the PIPE-A power domain, which covers the HW
5849 * blocks needed for the following programming. This can be
5850 * removed once it's guaranteed that we get here either with
5851 * the minimum CDCLK set, or the required power domains
5852 * enabled.
5853 */
5854 intel_display_power_get(dev_priv, POWER_DOMAIN_PIPE_A);
5855
383c5a6a
VS		 5856 if (IS_CHERRYVIEW(dev))
5857 cherryview_set_cdclk(dev, req_cdclk);
5858 else
5859 valleyview_set_cdclk(dev, req_cdclk);
738c05c0 5860
1e69cd74
VS		 5861 vlv_program_pfi_credits(dev_priv);
5862
738c05c0 5863 intel_display_power_put(dev_priv, POWER_DOMAIN_PIPE_A);
383c5a6a 5864 }
30a970c6
JB		 5865}
5866
89b667f8
JB		 5867static void valleyview_crtc_enable(struct drm_crtc *crtc)
5868{
5869 struct drm_device *dev = crtc->dev;
a72e4c9f 5870 struct drm_i915_private *dev_priv = to_i915(dev);
89b667f8
JB		 5871 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5872 struct intel_encoder *encoder;
5873 int pipe = intel_crtc->pipe;
23538ef1 5874 bool is_dsi;
89b667f8 5875
83d65738 5876 WARN_ON(!crtc->state->enable);
89b667f8
JB		 5877
5878 if (intel_crtc->active)
5879 return;
5880
409ee761 5881 is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
8525a235 5882
1ae0d137
VS		 5883 if (!is_dsi) {
5884 if (IS_CHERRYVIEW(dev))
6e3c9717 5885 chv_prepare_pll(intel_crtc, intel_crtc->config);
1ae0d137 5886 else
6e3c9717 5887 vlv_prepare_pll(intel_crtc, intel_crtc->config);
1ae0d137 5888 }
5b18e57c 5889
6e3c9717 5890 if (intel_crtc->config->has_dp_encoder)
fe3cd48d 5891 intel_dp_set_m_n(intel_crtc, M1_N1);
5b18e57c
DV		 5892
5893 intel_set_pipe_timings(intel_crtc);
5894
c14b0485
VS		 5895 if (IS_CHERRYVIEW(dev) && pipe == PIPE_B) {
5896 struct drm_i915_private *dev_priv = dev->dev_private;
5897
5898 I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
5899 I915_WRITE(CHV_CANVAS(pipe), 0);
5900 }
5901
5b18e57c
DV		 5902 i9xx_set_pipeconf(intel_crtc);
5903
89b667f8 5904 intel_crtc->active = true;
89b667f8 5905
a72e4c9f 5906 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4a3436e8 5907
89b667f8
JB		 5908 for_each_encoder_on_crtc(dev, crtc, encoder)
5909 if (encoder->pre_pll_enable)
5910 encoder->pre_pll_enable(encoder);
5911
9d556c99
CML		 5912 if (!is_dsi) {
5913 if (IS_CHERRYVIEW(dev))
6e3c9717 5914 chv_enable_pll(intel_crtc, intel_crtc->config);
9d556c99 5915 else
6e3c9717 5916 vlv_enable_pll(intel_crtc, intel_crtc->config);
9d556c99 5917 }
89b667f8
JB		 5918
5919 for_each_encoder_on_crtc(dev, crtc, encoder)
5920 if (encoder->pre_enable)
5921 encoder->pre_enable(encoder);
5922
2dd24552
JB		 5923 i9xx_pfit_enable(intel_crtc);
5924
63cbb074
VS		 5925 intel_crtc_load_lut(crtc);
5926
f37fcc2a 5927 intel_update_watermarks(crtc);
e1fdc473 5928 intel_enable_pipe(intel_crtc);
be6a6f8e 5929
4b3a9526
VS		 5930 assert_vblank_disabled(crtc);
5931 drm_crtc_vblank_on(crtc);
5932
f9b61ff6
DV		 5933 for_each_encoder_on_crtc(dev, crtc, encoder)
5934 encoder->enable(encoder);
89b667f8
JB		 5935}
5936
f13c2ef3
DV		 5937static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
5938{
5939 struct drm_device *dev = crtc->base.dev;
5940 struct drm_i915_private *dev_priv = dev->dev_private;
5941
6e3c9717
ACO		 5942 I915_WRITE(FP0(crtc->pipe), crtc->config->dpll_hw_state.fp0);
5943 I915_WRITE(FP1(crtc->pipe), crtc->config->dpll_hw_state.fp1);
f13c2ef3
DV		 5944}
5945
0b8765c6 5946static void i9xx_crtc_enable(struct drm_crtc *crtc)
79e53945
JB		 5947{
5948 struct drm_device *dev = crtc->dev;
a72e4c9f 5949 struct drm_i915_private *dev_priv = to_i915(dev);
79e53945 5950 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 5951 struct intel_encoder *encoder;
79e53945 5952 int pipe = intel_crtc->pipe;
79e53945 5953
83d65738 5954 WARN_ON(!crtc->state->enable);
08a48469 5955
f7abfe8b
CW		 5956 if (intel_crtc->active)
5957 return;
5958
f13c2ef3
DV		 5959 i9xx_set_pll_dividers(intel_crtc);
5960
6e3c9717 5961 if (intel_crtc->config->has_dp_encoder)
fe3cd48d 5962 intel_dp_set_m_n(intel_crtc, M1_N1);
5b18e57c
DV		 5963
5964 intel_set_pipe_timings(intel_crtc);
5965
5b18e57c
DV		 5966 i9xx_set_pipeconf(intel_crtc);
5967
f7abfe8b 5968 intel_crtc->active = true;
6b383a7f 5969
4a3436e8 5970 if (!IS_GEN2(dev))
a72e4c9f 5971 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
4a3436e8 5972
9d6d9f19
MK		 5973 for_each_encoder_on_crtc(dev, crtc, encoder)
5974 if (encoder->pre_enable)
5975 encoder->pre_enable(encoder);
5976
f6736a1a
DV		 5977 i9xx_enable_pll(intel_crtc);
5978
2dd24552
JB		 5979 i9xx_pfit_enable(intel_crtc);
5980
63cbb074
VS		 5981 intel_crtc_load_lut(crtc);
5982
f37fcc2a 5983 intel_update_watermarks(crtc);
e1fdc473 5984 intel_enable_pipe(intel_crtc);
be6a6f8e 5985
4b3a9526
VS		 5986 assert_vblank_disabled(crtc);
5987 drm_crtc_vblank_on(crtc);
5988
f9b61ff6
DV		 5989 for_each_encoder_on_crtc(dev, crtc, encoder)
5990 encoder->enable(encoder);
0b8765c6 5991}
79e53945 5992
87476d63
DV		 5993static void i9xx_pfit_disable(struct intel_crtc *crtc)
5994{
5995 struct drm_device *dev = crtc->base.dev;
5996 struct drm_i915_private *dev_priv = dev->dev_private;
87476d63 5997
6e3c9717 5998 if (!crtc->config->gmch_pfit.control)
328d8e82 5999 return;
87476d63 6000
328d8e82 6001 assert_pipe_disabled(dev_priv, crtc->pipe);
87476d63 6002
328d8e82
DV		 6003 DRM_DEBUG_DRIVER("disabling pfit, current: 0x%08x\n",
6004 I915_READ(PFIT_CONTROL));
6005 I915_WRITE(PFIT_CONTROL, 0);
87476d63
DV		 6006}
6007
0b8765c6
JB		 6008static void i9xx_crtc_disable(struct drm_crtc *crtc)
6009{
6010 struct drm_device *dev = crtc->dev;
6011 struct drm_i915_private *dev_priv = dev->dev_private;
6012 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ef9c3aee 6013 struct intel_encoder *encoder;
0b8765c6 6014 int pipe = intel_crtc->pipe;
ef9c3aee 6015
f7abfe8b
CW		 6016 if (!intel_crtc->active)
6017 return;
6018
6304cd91
VS		 6019 /*
6020 * On gen2 planes are double buffered but the pipe isn't, so we must
6021 * wait for planes to fully turn off before disabling the pipe.
564ed191
ID		 6022 * We also need to wait on all gmch platforms because of the
6023 * self-refresh mode constraint explained above.
6304cd91 6024 */
564ed191 6025 intel_wait_for_vblank(dev, pipe);
6304cd91 6026
4b3a9526
VS		 6027 for_each_encoder_on_crtc(dev, crtc, encoder)
6028 encoder->disable(encoder);
6029
f9b61ff6
DV		 6030 drm_crtc_vblank_off(crtc);
6031 assert_vblank_disabled(crtc);
6032
575f7ab7 6033 intel_disable_pipe(intel_crtc);
24a1f16d 6034
87476d63 6035 i9xx_pfit_disable(intel_crtc);
24a1f16d 6036
89b667f8
JB		 6037 for_each_encoder_on_crtc(dev, crtc, encoder)
6038 if (encoder->post_disable)
6039 encoder->post_disable(encoder);
6040
409ee761 6041 if (!intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI)) {
076ed3b2
CML		 6042 if (IS_CHERRYVIEW(dev))
6043 chv_disable_pll(dev_priv, pipe);
6044 else if (IS_VALLEYVIEW(dev))
6045 vlv_disable_pll(dev_priv, pipe);
6046 else
1c4e0274 6047 i9xx_disable_pll(intel_crtc);
076ed3b2 6048 }
0b8765c6 6049
4a3436e8 6050 if (!IS_GEN2(dev))
a72e4c9f 6051 intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
4a3436e8 6052
f7abfe8b 6053 intel_crtc->active = false;
46ba614c 6054 intel_update_watermarks(crtc);
f37fcc2a 6055
efa9624e 6056 mutex_lock(&dev->struct_mutex);
7ff0ebcc 6057 intel_fbc_update(dev);
efa9624e 6058 mutex_unlock(&dev->struct_mutex);
0b8765c6
JB		 6059}
6060
ee7b9f93
JB		 6061static void i9xx_crtc_off(struct drm_crtc *crtc)
6062{
6063}
6064
b04c5bd6
BF		 6065/* Master function to enable/disable CRTC and corresponding power wells */
6066void intel_crtc_control(struct drm_crtc *crtc, bool enable)
976f8a20
DV		 6067{
6068 struct drm_device *dev = crtc->dev;
6069 struct drm_i915_private *dev_priv = dev->dev_private;
0e572fe7 6070 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
0e572fe7
DV		 6071 enum intel_display_power_domain domain;
6072 unsigned long domains;
976f8a20 6073
0e572fe7
DV		 6074 if (enable) {
6075 if (!intel_crtc->active) {
e1e9fb84
DV		 6076 domains = get_crtc_power_domains(crtc);
6077 for_each_power_domain(domain, domains)
6078 intel_display_power_get(dev_priv, domain);
6079 intel_crtc->enabled_power_domains = domains;
0e572fe7
DV		 6080
6081 dev_priv->display.crtc_enable(crtc);
ce22dba9 6082 intel_crtc_enable_planes(crtc);
0e572fe7
DV		 6083 }
6084 } else {
6085 if (intel_crtc->active) {
ce22dba9 6086 intel_crtc_disable_planes(crtc);
0e572fe7
DV		 6087 dev_priv->display.crtc_disable(crtc);
6088
e1e9fb84
DV		 6089 domains = intel_crtc->enabled_power_domains;
6090 for_each_power_domain(domain, domains)
6091 intel_display_power_put(dev_priv, domain);
6092 intel_crtc->enabled_power_domains = 0;
0e572fe7
DV		 6093 }
6094 }
b04c5bd6
BF		 6095}
6096
6097/**
6098 * Sets the power management mode of the pipe and plane.
6099 */
6100void intel_crtc_update_dpms(struct drm_crtc *crtc)
6101{
6102 struct drm_device *dev = crtc->dev;
6103 struct intel_encoder *intel_encoder;
6104 bool enable = false;
6105
6106 for_each_encoder_on_crtc(dev, crtc, intel_encoder)
6107 enable |= intel_encoder->connectors_active;
6108
6109 intel_crtc_control(crtc, enable);
0f63cca2
ACO		 6110
6111 crtc->state->active = enable;
976f8a20
DV		 6112}
6113
cdd59983
CW		 6114static void intel_crtc_disable(struct drm_crtc *crtc)
6115{
cdd59983 6116 struct drm_device *dev = crtc->dev;
976f8a20 6117 struct drm_connector *connector;
ee7b9f93 6118 struct drm_i915_private *dev_priv = dev->dev_private;
cdd59983 6119
976f8a20 6120 /* crtc should still be enabled when we disable it. */
83d65738 6121 WARN_ON(!crtc->state->enable);
976f8a20 6122
ce22dba9 6123 intel_crtc_disable_planes(crtc);
976f8a20 6124 dev_priv->display.crtc_disable(crtc);
ee7b9f93
JB		 6125 dev_priv->display.off(crtc);
6126
70a101f8 6127 drm_plane_helper_disable(crtc->primary);
976f8a20
DV		 6128
6129 /* Update computed state. */
6130 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
6131 if (!connector->encoder || !connector->encoder->crtc)
6132 continue;
6133
6134 if (connector->encoder->crtc != crtc)
6135 continue;
6136
6137 connector->dpms = DRM_MODE_DPMS_OFF;
6138 to_intel_encoder(connector->encoder)->connectors_active = false;
cdd59983
CW		 6139 }
6140}
6141
ea5b213a 6142void intel_encoder_destroy(struct drm_encoder *encoder)
7e7d76c3 6143{
4ef69c7a 6144 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
ea5b213a 6145
ea5b213a
CW		 6146 drm_encoder_cleanup(encoder);
6147 kfree(intel_encoder);
7e7d76c3
JB		 6148}
6149
9237329d 6150/* Simple dpms helper for encoders with just one connector, no cloning and only
5ab432ef
DV		 6151 * one kind of off state. It clamps all !ON modes to fully OFF and changes the
6152 * state of the entire output pipe. */
9237329d 6153static void intel_encoder_dpms(struct intel_encoder *encoder, int mode)
7e7d76c3 6154{
5ab432ef
DV		 6155 if (mode == DRM_MODE_DPMS_ON) {
6156 encoder->connectors_active = true;
6157
b2cabb0e 6158 intel_crtc_update_dpms(encoder->base.crtc);
5ab432ef
DV		 6159 } else {
6160 encoder->connectors_active = false;
6161
b2cabb0e 6162 intel_crtc_update_dpms(encoder->base.crtc);
5ab432ef 6163 }
79e53945
JB		 6164}
6165
0a91ca29
DV		 6166/* Cross check the actual hw state with our own modeset state tracking (and it's
6167 * internal consistency). */
b980514c 6168static void intel_connector_check_state(struct intel_connector *connector)
79e53945 6169{
0a91ca29
DV		 6170 if (connector->get_hw_state(connector)) {
6171 struct intel_encoder *encoder = connector->encoder;
6172 struct drm_crtc *crtc;
6173 bool encoder_enabled;
6174 enum pipe pipe;
6175
6176 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
6177 connector->base.base.id,
c23cc417 6178 connector->base.name);
0a91ca29 6179
0e32b39c
DA		 6180 /* there is no real hw state for MST connectors */
6181 if (connector->mst_port)
6182 return;
6183
e2c719b7 6184 I915_STATE_WARN(connector->base.dpms == DRM_MODE_DPMS_OFF,
0a91ca29 6185 "wrong connector dpms state\n");
e2c719b7 6186 I915_STATE_WARN(connector->base.encoder != &encoder->base,
0a91ca29 6187 "active connector not linked to encoder\n");
0a91ca29 6188
36cd7444 6189 if (encoder) {
e2c719b7 6190 I915_STATE_WARN(!encoder->connectors_active,
36cd7444
DA		 6191 "encoder->connectors_active not set\n");
6192
6193 encoder_enabled = encoder->get_hw_state(encoder, &pipe);
e2c719b7
RC		 6194 I915_STATE_WARN(!encoder_enabled, "encoder not enabled\n");
6195 if (I915_STATE_WARN_ON(!encoder->base.crtc))
36cd7444 6196 return;
0a91ca29 6197
36cd7444 6198 crtc = encoder->base.crtc;
0a91ca29 6199
83d65738
MR		 6200 I915_STATE_WARN(!crtc->state->enable,
6201 "crtc not enabled\n");
e2c719b7
RC		 6202 I915_STATE_WARN(!to_intel_crtc(crtc)->active, "crtc not active\n");
6203 I915_STATE_WARN(pipe != to_intel_crtc(crtc)->pipe,
36cd7444
DA		 6204 "encoder active on the wrong pipe\n");
6205 }
0a91ca29 6206 }
79e53945
JB		 6207}
6208
08d9bc92
ACO		 6209int intel_connector_init(struct intel_connector *connector)
6210{
6211 struct drm_connector_state *connector_state;
6212
6213 connector_state = kzalloc(sizeof *connector_state, GFP_KERNEL);
6214 if (!connector_state)
6215 return -ENOMEM;
6216
6217 connector->base.state = connector_state;
6218 return 0;
6219}
6220
6221struct intel_connector *intel_connector_alloc(void)
6222{
6223 struct intel_connector *connector;
6224
6225 connector = kzalloc(sizeof *connector, GFP_KERNEL);
6226 if (!connector)
6227 return NULL;
6228
6229 if (intel_connector_init(connector) < 0) {
6230 kfree(connector);
6231 return NULL;
6232 }
6233
6234 return connector;
6235}
6236
5ab432ef
DV		 6237/* Even simpler default implementation, if there's really no special case to
6238 * consider. */
6239void intel_connector_dpms(struct drm_connector *connector, int mode)
79e53945 6240{
5ab432ef
DV		 6241 /* All the simple cases only support two dpms states. */
6242 if (mode != DRM_MODE_DPMS_ON)
6243 mode = DRM_MODE_DPMS_OFF;
d4270e57 6244
5ab432ef
DV		 6245 if (mode == connector->dpms)
6246 return;
6247
6248 connector->dpms = mode;
6249
6250 /* Only need to change hw state when actually enabled */
c9976dcf
CW		 6251 if (connector->encoder)
6252 intel_encoder_dpms(to_intel_encoder(connector->encoder), mode);
0a91ca29 6253
b980514c 6254 intel_modeset_check_state(connector->dev);
79e53945
JB		 6255}
6256
f0947c37
DV		 6257/* Simple connector->get_hw_state implementation for encoders that support only
6258 * one connector and no cloning and hence the encoder state determines the state
6259 * of the connector. */
6260bool intel_connector_get_hw_state(struct intel_connector *connector)
ea5b213a 6261{
24929352 6262 enum pipe pipe = 0;
f0947c37 6263 struct intel_encoder *encoder = connector->encoder;
ea5b213a 6264
f0947c37 6265 return encoder->get_hw_state(encoder, &pipe);
ea5b213a
CW		 6266}
6267
6d293983 6268static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
d272ddfa 6269{
6d293983
ACO		 6270 if (crtc_state->base.enable && crtc_state->has_pch_encoder)
6271 return crtc_state->fdi_lanes;
d272ddfa
VS		 6272
6273 return 0;
6274}
6275
6d293983 6276static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
5cec258b 6277 struct intel_crtc_state *pipe_config)
1857e1da 6278{
6d293983
ACO		 6279 struct drm_atomic_state *state = pipe_config->base.state;
6280 struct intel_crtc *other_crtc;
6281 struct intel_crtc_state *other_crtc_state;
6282
1857e1da
DV		 6283 DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
6284 pipe_name(pipe), pipe_config->fdi_lanes);
6285 if (pipe_config->fdi_lanes > 4) {
6286 DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
6287 pipe_name(pipe), pipe_config->fdi_lanes);
6d293983 6288 return -EINVAL;
1857e1da
DV		 6289 }
6290
bafb6553 6291 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
1857e1da
DV		 6292 if (pipe_config->fdi_lanes > 2) {
6293 DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
6294 pipe_config->fdi_lanes);
6d293983 6295 return -EINVAL;
1857e1da 6296 } else {
6d293983 6297 return 0;
1857e1da
DV		 6298 }
6299 }
6300
6301 if (INTEL_INFO(dev)->num_pipes == 2)
6d293983 6302 return 0;
1857e1da
DV		 6303
6304 /* Ivybridge 3 pipe is really complicated */
6305 switch (pipe) {
6306 case PIPE_A:
6d293983 6307 return 0;
1857e1da 6308 case PIPE_B:
6d293983
ACO		 6309 if (pipe_config->fdi_lanes <= 2)
6310 return 0;
6311
6312 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_C));
6313 other_crtc_state =
6314 intel_atomic_get_crtc_state(state, other_crtc);
6315 if (IS_ERR(other_crtc_state))
6316 return PTR_ERR(other_crtc_state);
6317
6318 if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
1857e1da
DV		 6319 DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
6320 pipe_name(pipe), pipe_config->fdi_lanes);
6d293983 6321 return -EINVAL;
1857e1da 6322 }
6d293983 6323 return 0;
1857e1da 6324 case PIPE_C:
251cc67c
VS		 6325 if (pipe_config->fdi_lanes > 2) {
6326 DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
6327 pipe_name(pipe), pipe_config->fdi_lanes);
6d293983 6328 return -EINVAL;
251cc67c 6329 }
6d293983
ACO		 6330
6331 other_crtc = to_intel_crtc(intel_get_crtc_for_pipe(dev, PIPE_B));
6332 other_crtc_state =
6333 intel_atomic_get_crtc_state(state, other_crtc);
6334 if (IS_ERR(other_crtc_state))
6335 return PTR_ERR(other_crtc_state);
6336
6337 if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
1857e1da 6338 DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
6d293983 6339 return -EINVAL;
1857e1da 6340 }
6d293983 6341 return 0;
1857e1da
DV		 6342 default:
6343 BUG();
6344 }
6345}
6346
e29c22c0
DV		 6347#define RETRY 1
6348static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
5cec258b 6349 struct intel_crtc_state *pipe_config)
877d48d5 6350{
1857e1da 6351 struct drm_device *dev = intel_crtc->base.dev;
2d112de7 6352 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
6d293983
ACO		 6353 int lane, link_bw, fdi_dotclock, ret;
6354 bool needs_recompute = false;
877d48d5 6355
e29c22c0 6356retry:
877d48d5
DV		 6357 /* FDI is a binary signal running at ~2.7GHz, encoding
6358 * each output octet as 10 bits. The actual frequency
6359 * is stored as a divider into a 100MHz clock, and the
6360 * mode pixel clock is stored in units of 1KHz.
6361 * Hence the bw of each lane in terms of the mode signal
6362 * is:
6363 */
6364 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
6365
241bfc38 6366 fdi_dotclock = adjusted_mode->crtc_clock;
877d48d5 6367
2bd89a07 6368 lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
877d48d5
DV		 6369 pipe_config->pipe_bpp);
6370
6371 pipe_config->fdi_lanes = lane;
6372
2bd89a07 6373 intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
877d48d5 6374 link_bw, &pipe_config->fdi_m_n);
1857e1da 6375
6d293983
ACO		 6376 ret = ironlake_check_fdi_lanes(intel_crtc->base.dev,
6377 intel_crtc->pipe, pipe_config);
6378 if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
e29c22c0
DV		 6379 pipe_config->pipe_bpp -= 2*3;
6380 DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
6381 pipe_config->pipe_bpp);
6382 needs_recompute = true;
6383 pipe_config->bw_constrained = true;
6384
6385 goto retry;
6386 }
6387
6388 if (needs_recompute)
6389 return RETRY;
6390
6d293983 6391 return ret;
877d48d5
DV		 6392}
6393
42db64ef 6394static void hsw_compute_ips_config(struct intel_crtc *crtc,
5cec258b 6395 struct intel_crtc_state *pipe_config)
42db64ef 6396{
d330a953 6397 pipe_config->ips_enabled = i915.enable_ips &&
3c4ca58c 6398 hsw_crtc_supports_ips(crtc) &&
b6dfdc9b 6399 pipe_config->pipe_bpp <= 24;
42db64ef
PZ		 6400}
6401
a43f6e0f 6402static int intel_crtc_compute_config(struct intel_crtc *crtc,
5cec258b 6403 struct intel_crtc_state *pipe_config)
79e53945 6404{
a43f6e0f 6405 struct drm_device *dev = crtc->base.dev;
8bd31e67 6406 struct drm_i915_private *dev_priv = dev->dev_private;
2d112de7 6407 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
d03c93d4 6408 int ret;
89749350 6409
ad3a4479 6410 /* FIXME should check pixel clock limits on all platforms */
cf532bb2 6411 if (INTEL_INFO(dev)->gen < 4) {
cf532bb2
VS		 6412 int clock_limit =
6413 dev_priv->display.get_display_clock_speed(dev);
6414
6415 /*
6416 * Enable pixel doubling when the dot clock
6417 * is > 90% of the (display) core speed.
6418 *
b397c96b
VS		 6419 * GDG double wide on either pipe,
6420 * otherwise pipe A only.
cf532bb2 6421 */
b397c96b 6422 if ((crtc->pipe == PIPE_A || IS_I915G(dev)) &&
241bfc38 6423 adjusted_mode->crtc_clock > clock_limit * 9 / 10) {
ad3a4479 6424 clock_limit *= 2;
cf532bb2 6425 pipe_config->double_wide = true;
ad3a4479
VS		 6426 }
6427
241bfc38 6428 if (adjusted_mode->crtc_clock > clock_limit * 9 / 10)
e29c22c0 6429 return -EINVAL;
2c07245f 6430 }
89749350 6431
1d1d0e27
VS		 6432 /*
6433 * Pipe horizontal size must be even in:
6434 * - DVO ganged mode
6435 * - LVDS dual channel mode
6436 * - Double wide pipe
6437 */
a93e255f 6438 if ((intel_pipe_will_have_type(pipe_config, INTEL_OUTPUT_LVDS) &&
1d1d0e27
VS		 6439 intel_is_dual_link_lvds(dev)) || pipe_config->double_wide)
6440 pipe_config->pipe_src_w &= ~1;
6441
8693a824
DL		 6442 /* Cantiga+ cannot handle modes with a hsync front porch of 0.
6443 * WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
44f46b42
CW		 6444 */
6445 if ((INTEL_INFO(dev)->gen > 4 || IS_G4X(dev)) &&
6446 adjusted_mode->hsync_start == adjusted_mode->hdisplay)
e29c22c0 6447 return -EINVAL;
44f46b42 6448
f5adf94e 6449 if (HAS_IPS(dev))
a43f6e0f
DV		 6450 hsw_compute_ips_config(crtc, pipe_config);
6451
877d48d5 6452 if (pipe_config->has_pch_encoder)
a43f6e0f 6453 return ironlake_fdi_compute_config(crtc, pipe_config);
877d48d5 6454
d03c93d4
CK		 6455 /* FIXME: remove below call once atomic mode set is place and all crtc
6456 * related checks called from atomic_crtc_check function */
6457 ret = 0;
6458 DRM_DEBUG_KMS("intel_crtc = %p drm_state (pipe_config->base.state) = %p\n",
6459 crtc, pipe_config->base.state);
6460 ret = intel_atomic_setup_scalers(dev, crtc, pipe_config);
6461
6462 return ret;
79e53945
JB		 6463}
6464
1652d19e
VS		 6465static int skylake_get_display_clock_speed(struct drm_device *dev)
6466{
6467 struct drm_i915_private *dev_priv = to_i915(dev);
6468 uint32_t lcpll1 = I915_READ(LCPLL1_CTL);
6469 uint32_t cdctl = I915_READ(CDCLK_CTL);
6470 uint32_t linkrate;
6471
6472 if (!(lcpll1 & LCPLL_PLL_ENABLE)) {
6473 WARN(1, "LCPLL1 not enabled\n");
6474 return 24000; /* 24MHz is the cd freq with NSSC ref */
6475 }
6476
6477 if ((cdctl & CDCLK_FREQ_SEL_MASK) == CDCLK_FREQ_540)
6478 return 540000;
6479
6480 linkrate = (I915_READ(DPLL_CTRL1) &
71cd8423 6481 DPLL_CTRL1_LINK_RATE_MASK(SKL_DPLL0)) >> 1;
1652d19e 6482
71cd8423
DL		 6483 if (linkrate == DPLL_CTRL1_LINK_RATE_2160 ||
6484 linkrate == DPLL_CTRL1_LINK_RATE_1080) {
1652d19e
VS		 6485 /* vco 8640 */
6486 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6487 case CDCLK_FREQ_450_432:
6488 return 432000;
6489 case CDCLK_FREQ_337_308:
6490 return 308570;
6491 case CDCLK_FREQ_675_617:
6492 return 617140;
6493 default:
6494 WARN(1, "Unknown cd freq selection\n");
6495 }
6496 } else {
6497 /* vco 8100 */
6498 switch (cdctl & CDCLK_FREQ_SEL_MASK) {
6499 case CDCLK_FREQ_450_432:
6500 return 450000;
6501 case CDCLK_FREQ_337_308:
6502 return 337500;
6503 case CDCLK_FREQ_675_617:
6504 return 675000;
6505 default:
6506 WARN(1, "Unknown cd freq selection\n");
6507 }
6508 }
6509
6510 /* error case, do as if DPLL0 isn't enabled */
6511 return 24000;
6512}
6513
6514static int broadwell_get_display_clock_speed(struct drm_device *dev)
6515{
6516 struct drm_i915_private *dev_priv = dev->dev_private;
6517 uint32_t lcpll = I915_READ(LCPLL_CTL);
6518 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6519
6520 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6521 return 800000;
6522 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6523 return 450000;
6524 else if (freq == LCPLL_CLK_FREQ_450)
6525 return 450000;
6526 else if (freq == LCPLL_CLK_FREQ_54O_BDW)
6527 return 540000;
6528 else if (freq == LCPLL_CLK_FREQ_337_5_BDW)
6529 return 337500;
6530 else
6531 return 675000;
6532}
6533
6534static int haswell_get_display_clock_speed(struct drm_device *dev)
6535{
6536 struct drm_i915_private *dev_priv = dev->dev_private;
6537 uint32_t lcpll = I915_READ(LCPLL_CTL);
6538 uint32_t freq = lcpll & LCPLL_CLK_FREQ_MASK;
6539
6540 if (lcpll & LCPLL_CD_SOURCE_FCLK)
6541 return 800000;
6542 else if (I915_READ(FUSE_STRAP) & HSW_CDCLK_LIMIT)
6543 return 450000;
6544 else if (freq == LCPLL_CLK_FREQ_450)
6545 return 450000;
6546 else if (IS_HSW_ULT(dev))
6547 return 337500;
6548 else
6549 return 540000;
79e53945
JB		 6550}
6551
25eb05fc
JB		 6552static int valleyview_get_display_clock_speed(struct drm_device *dev)
6553{
d197b7d3 6554 struct drm_i915_private *dev_priv = dev->dev_private;
d197b7d3
VS		 6555 u32 val;
6556 int divider;
6557
6bcda4f0
VS		 6558 if (dev_priv->hpll_freq == 0)
6559 dev_priv->hpll_freq = valleyview_get_vco(dev_priv);
6560
d197b7d3
VS		 6561 mutex_lock(&dev_priv->dpio_lock);
6562 val = vlv_cck_read(dev_priv, CCK_DISPLAY_CLOCK_CONTROL);
6563 mutex_unlock(&dev_priv->dpio_lock);
6564
6565 divider = val & DISPLAY_FREQUENCY_VALUES;
6566
7d007f40
VS		 6567 WARN((val & DISPLAY_FREQUENCY_STATUS) !=
6568 (divider << DISPLAY_FREQUENCY_STATUS_SHIFT),
6569 "cdclk change in progress\n");
6570
6bcda4f0 6571 return DIV_ROUND_CLOSEST(dev_priv->hpll_freq << 1, divider + 1);
25eb05fc
JB		 6572}
6573
b37a6434
VS		 6574static int ilk_get_display_clock_speed(struct drm_device *dev)
6575{
6576 return 450000;
6577}
6578
e70236a8
JB		 6579static int i945_get_display_clock_speed(struct drm_device *dev)
6580{
6581 return 400000;
6582}
79e53945 6583
e70236a8 6584static int i915_get_display_clock_speed(struct drm_device *dev)
79e53945 6585{
e907f170 6586 return 333333;
e70236a8 6587}
79e53945 6588
e70236a8
JB		 6589static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
6590{
6591 return 200000;
6592}
79e53945 6593
257a7ffc
DV		 6594static int pnv_get_display_clock_speed(struct drm_device *dev)
6595{
6596 u16 gcfgc = 0;
6597
6598 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6599
6600 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6601 case GC_DISPLAY_CLOCK_267_MHZ_PNV:
e907f170 6602 return 266667;
257a7ffc 6603 case GC_DISPLAY_CLOCK_333_MHZ_PNV:
e907f170 6604 return 333333;
257a7ffc 6605 case GC_DISPLAY_CLOCK_444_MHZ_PNV:
e907f170 6606 return 444444;
257a7ffc
DV		 6607 case GC_DISPLAY_CLOCK_200_MHZ_PNV:
6608 return 200000;
6609 default:
6610 DRM_ERROR("Unknown pnv display core clock 0x%04x\n", gcfgc);
6611 case GC_DISPLAY_CLOCK_133_MHZ_PNV:
e907f170 6612 return 133333;
257a7ffc 6613 case GC_DISPLAY_CLOCK_167_MHZ_PNV:
e907f170 6614 return 166667;
257a7ffc
DV		 6615 }
6616}
6617
e70236a8
JB		 6618static int i915gm_get_display_clock_speed(struct drm_device *dev)
6619{
6620 u16 gcfgc = 0;
79e53945 6621
e70236a8
JB		 6622 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
6623
6624 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
e907f170 6625 return 133333;
e70236a8
JB		 6626 else {
6627 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
6628 case GC_DISPLAY_CLOCK_333_MHZ:
e907f170 6629 return 333333;
e70236a8
JB		 6630 default:
6631 case GC_DISPLAY_CLOCK_190_200_MHZ:
6632 return 190000;
79e53945 6633 }
e70236a8
JB		 6634 }
6635}
6636
6637static int i865_get_display_clock_speed(struct drm_device *dev)
6638{
e907f170 6639 return 266667;
e70236a8
JB		 6640}
6641
6642static int i855_get_display_clock_speed(struct drm_device *dev)
6643{
6644 u16 hpllcc = 0;
6645 /* Assume that the hardware is in the high speed state. This
6646 * should be the default.
6647 */
6648 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
6649 case GC_CLOCK_133_200:
6650 case GC_CLOCK_100_200:
6651 return 200000;
6652 case GC_CLOCK_166_250:
6653 return 250000;
6654 case GC_CLOCK_100_133:
e907f170 6655 return 133333;
e70236a8 6656 }
79e53945 6657
e70236a8
JB		 6658 /* Shouldn't happen */
6659 return 0;
6660}
79e53945 6661
e70236a8
JB		 6662static int i830_get_display_clock_speed(struct drm_device *dev)
6663{
e907f170 6664 return 133333;
79e53945
JB		 6665}
6666
2c07245f 6667static void
a65851af 6668intel_reduce_m_n_ratio(uint32_t *num, uint32_t *den)
2c07245f 6669{
a65851af
VS		 6670 while (*num > DATA_LINK_M_N_MASK ||
6671 *den > DATA_LINK_M_N_MASK) {
2c07245f
ZW		 6672 *num >>= 1;
6673 *den >>= 1;
6674 }
6675}
6676
a65851af
VS		 6677static void compute_m_n(unsigned int m, unsigned int n,
6678 uint32_t *ret_m, uint32_t *ret_n)
6679{
6680 *ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
6681 *ret_m = div_u64((uint64_t) m * *ret_n, n);
6682 intel_reduce_m_n_ratio(ret_m, ret_n);
6683}
6684
e69d0bc1
DV		 6685void
6686intel_link_compute_m_n(int bits_per_pixel, int nlanes,
6687 int pixel_clock, int link_clock,
6688 struct intel_link_m_n *m_n)
2c07245f 6689{
e69d0bc1 6690 m_n->tu = 64;
a65851af
VS		 6691
6692 compute_m_n(bits_per_pixel * pixel_clock,
6693 link_clock * nlanes * 8,
6694 &m_n->gmch_m, &m_n->gmch_n);
6695
6696 compute_m_n(pixel_clock, link_clock,
6697 &m_n->link_m, &m_n->link_n);
2c07245f
ZW		 6698}
6699
a7615030
CW		 6700static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
6701{
d330a953
JN		 6702 if (i915.panel_use_ssc >= 0)
6703 return i915.panel_use_ssc != 0;
41aa3448 6704 return dev_priv->vbt.lvds_use_ssc
435793df 6705 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
a7615030
CW		 6706}
6707
a93e255f
ACO		 6708static int i9xx_get_refclk(const struct intel_crtc_state *crtc_state,
6709 int num_connectors)
c65d77d8 6710{
a93e255f 6711 struct drm_device *dev = crtc_state->base.crtc->dev;
c65d77d8
JB		 6712 struct drm_i915_private *dev_priv = dev->dev_private;
6713 int refclk;
6714
a93e255f
ACO		 6715 WARN_ON(!crtc_state->base.state);
6716
5ab7b0b7 6717 if (IS_VALLEYVIEW(dev) || IS_BROXTON(dev)) {
9a0ea498 6718 refclk = 100000;
a93e255f 6719 } else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
c65d77d8 6720 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
e91e941b
VS		 6721 refclk = dev_priv->vbt.lvds_ssc_freq;
6722 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
c65d77d8
JB		 6723 } else if (!IS_GEN2(dev)) {
6724 refclk = 96000;
6725 } else {
6726 refclk = 48000;
6727 }
6728
6729 return refclk;
6730}
6731
7429e9d4 6732static uint32_t pnv_dpll_compute_fp(struct dpll *dpll)
c65d77d8 6733{
7df00d7a 6734 return (1 << dpll->n) << 16 | dpll->m2;
7429e9d4 6735}
f47709a9 6736
7429e9d4
DV		 6737static uint32_t i9xx_dpll_compute_fp(struct dpll *dpll)
6738{
6739 return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
c65d77d8
JB		 6740}
6741
f47709a9 6742static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
190f68c5 6743 struct intel_crtc_state *crtc_state,
a7516a05
JB		 6744 intel_clock_t *reduced_clock)
6745{
f47709a9 6746 struct drm_device *dev = crtc->base.dev;
a7516a05
JB		 6747 u32 fp, fp2 = 0;
6748
6749 if (IS_PINEVIEW(dev)) {
190f68c5 6750 fp = pnv_dpll_compute_fp(&crtc_state->dpll);
a7516a05 6751 if (reduced_clock)
7429e9d4 6752 fp2 = pnv_dpll_compute_fp(reduced_clock);
a7516a05 6753 } else {
190f68c5 6754 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
a7516a05 6755 if (reduced_clock)
7429e9d4 6756 fp2 = i9xx_dpll_compute_fp(reduced_clock);
a7516a05
JB		 6757 }
6758
190f68c5 6759 crtc_state->dpll_hw_state.fp0 = fp;
a7516a05 6760
f47709a9 6761 crtc->lowfreq_avail = false;
a93e255f 6762 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
ab585dea 6763 reduced_clock) {
190f68c5 6764 crtc_state->dpll_hw_state.fp1 = fp2;
f47709a9 6765 crtc->lowfreq_avail = true;
a7516a05 6766 } else {
190f68c5 6767 crtc_state->dpll_hw_state.fp1 = fp;
a7516a05
JB		 6768 }
6769}
6770
5e69f97f
CML		 6771static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
6772 pipe)
89b667f8
JB		 6773{
6774 u32 reg_val;
6775
6776 /*
6777 * PLLB opamp always calibrates to max value of 0x3f, force enable it
6778 * and set it to a reasonable value instead.
6779 */
ab3c759a 6780 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
89b667f8
JB		 6781 reg_val &= 0xffffff00;
6782 reg_val |= 0x00000030;
ab3c759a 6783 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
89b667f8 6784
ab3c759a 6785 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
89b667f8
JB		 6786 reg_val &= 0x8cffffff;
6787 reg_val = 0x8c000000;
ab3c759a 6788 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
89b667f8 6789
ab3c759a 6790 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
89b667f8 6791 reg_val &= 0xffffff00;
ab3c759a 6792 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
89b667f8 6793
ab3c759a 6794 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
89b667f8
JB		 6795 reg_val &= 0x00ffffff;
6796 reg_val |= 0xb0000000;
ab3c759a 6797 vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
89b667f8
JB		 6798}
6799
b551842d
DV		 6800static void intel_pch_transcoder_set_m_n(struct intel_crtc *crtc,
6801 struct intel_link_m_n *m_n)
6802{
6803 struct drm_device *dev = crtc->base.dev;
6804 struct drm_i915_private *dev_priv = dev->dev_private;
6805 int pipe = crtc->pipe;
6806
e3b95f1e
DV		 6807 I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
6808 I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
6809 I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
6810 I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
b551842d
DV		 6811}
6812
6813static void intel_cpu_transcoder_set_m_n(struct intel_crtc *crtc,
f769cd24
VK		 6814 struct intel_link_m_n *m_n,
6815 struct intel_link_m_n *m2_n2)
b551842d
DV		 6816{
6817 struct drm_device *dev = crtc->base.dev;
6818 struct drm_i915_private *dev_priv = dev->dev_private;
6819 int pipe = crtc->pipe;
6e3c9717 6820 enum transcoder transcoder = crtc->config->cpu_transcoder;
b551842d
DV		 6821
6822 if (INTEL_INFO(dev)->gen >= 5) {
6823 I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
6824 I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
6825 I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
6826 I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
f769cd24
VK		 6827 /* M2_N2 registers to be set only for gen < 8 (M2_N2 available
6828 * for gen < 8) and if DRRS is supported (to make sure the
6829 * registers are not unnecessarily accessed).
6830 */
44395bfe 6831 if (m2_n2 && (IS_CHERRYVIEW(dev) || INTEL_INFO(dev)->gen < 8) &&
6e3c9717 6832 crtc->config->has_drrs) {
f769cd24
VK		 6833 I915_WRITE(PIPE_DATA_M2(transcoder),
6834 TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
6835 I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
6836 I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
6837 I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
6838 }
b551842d 6839 } else {
e3b95f1e
DV		 6840 I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
6841 I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
6842 I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
6843 I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
b551842d
DV		 6844 }
6845}
6846
fe3cd48d 6847void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n)
03afc4a2 6848{
fe3cd48d
R		 6849 struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
6850
6851 if (m_n == M1_N1) {
6852 dp_m_n = &crtc->config->dp_m_n;
6853 dp_m2_n2 = &crtc->config->dp_m2_n2;
6854 } else if (m_n == M2_N2) {
6855
6856 /*
6857 * M2_N2 registers are not supported. Hence m2_n2 divider value
6858 * needs to be programmed into M1_N1.
6859 */
6860 dp_m_n = &crtc->config->dp_m2_n2;
6861 } else {
6862 DRM_ERROR("Unsupported divider value\n");
6863 return;
6864 }
6865
6e3c9717
ACO		 6866 if (crtc->config->has_pch_encoder)
6867 intel_pch_transcoder_set_m_n(crtc, &crtc->config->dp_m_n);
03afc4a2 6868 else
fe3cd48d 6869 intel_cpu_transcoder_set_m_n(crtc, dp_m_n, dp_m2_n2);
03afc4a2
DV		 6870}
6871
d288f65f 6872static void vlv_update_pll(struct intel_crtc *crtc,
5cec258b 6873 struct intel_crtc_state *pipe_config)
bdd4b6a6
DV		 6874{
6875 u32 dpll, dpll_md;
6876
6877 /*
6878 * Enable DPIO clock input. We should never disable the reference
6879 * clock for pipe B, since VGA hotplug / manual detection depends
6880 * on it.
6881 */
6882 dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
6883 DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
6884 /* We should never disable this, set it here for state tracking */
6885 if (crtc->pipe == PIPE_B)
6886 dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
6887 dpll |= DPLL_VCO_ENABLE;
d288f65f 6888 pipe_config->dpll_hw_state.dpll = dpll;
bdd4b6a6 6889
d288f65f 6890 dpll_md = (pipe_config->pixel_multiplier - 1)
bdd4b6a6 6891 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
d288f65f 6892 pipe_config->dpll_hw_state.dpll_md = dpll_md;
bdd4b6a6
DV		 6893}
6894
d288f65f 6895static void vlv_prepare_pll(struct intel_crtc *crtc,
5cec258b 6896 const struct intel_crtc_state *pipe_config)
a0c4da24 6897{
f47709a9 6898 struct drm_device *dev = crtc->base.dev;
a0c4da24 6899 struct drm_i915_private *dev_priv = dev->dev_private;
f47709a9 6900 int pipe = crtc->pipe;
bdd4b6a6 6901 u32 mdiv;
a0c4da24 6902 u32 bestn, bestm1, bestm2, bestp1, bestp2;
bdd4b6a6 6903 u32 coreclk, reg_val;
a0c4da24 6904
09153000
DV		 6905 mutex_lock(&dev_priv->dpio_lock);
6906
d288f65f
VS		 6907 bestn = pipe_config->dpll.n;
6908 bestm1 = pipe_config->dpll.m1;
6909 bestm2 = pipe_config->dpll.m2;
6910 bestp1 = pipe_config->dpll.p1;
6911 bestp2 = pipe_config->dpll.p2;
a0c4da24 6912
89b667f8
JB		 6913 /* See eDP HDMI DPIO driver vbios notes doc */
6914
6915 /* PLL B needs special handling */
bdd4b6a6 6916 if (pipe == PIPE_B)
5e69f97f 6917 vlv_pllb_recal_opamp(dev_priv, pipe);
89b667f8
JB		 6918
6919 /* Set up Tx target for periodic Rcomp update */
ab3c759a 6920 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
89b667f8
JB		 6921
6922 /* Disable target IRef on PLL */
ab3c759a 6923 reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
89b667f8 6924 reg_val &= 0x00ffffff;
ab3c759a 6925 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
89b667f8
JB		 6926
6927 /* Disable fast lock */
ab3c759a 6928 vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
89b667f8
JB		 6929
6930 /* Set idtafcrecal before PLL is enabled */
a0c4da24
JB		 6931 mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
6932 mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
6933 mdiv |= ((bestn << DPIO_N_SHIFT));
a0c4da24 6934 mdiv |= (1 << DPIO_K_SHIFT);
7df5080b
JB		 6935
6936 /*
6937 * Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
6938 * but we don't support that).
6939 * Note: don't use the DAC post divider as it seems unstable.
6940 */
6941 mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
ab3c759a 6942 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
a0c4da24 6943
a0c4da24 6944 mdiv |= DPIO_ENABLE_CALIBRATION;
ab3c759a 6945 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
a0c4da24 6946
89b667f8 6947 /* Set HBR and RBR LPF coefficients */
d288f65f 6948 if (pipe_config->port_clock == 162000 ||
409ee761
ACO		 6949 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG) ||
6950 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
ab3c759a 6951 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
885b0120 6952 0x009f0003);
89b667f8 6953 else
ab3c759a 6954 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
89b667f8
JB		 6955 0x00d0000f);
6956
681a8504 6957 if (pipe_config->has_dp_encoder) {
89b667f8 6958 /* Use SSC source */
bdd4b6a6 6959 if (pipe == PIPE_A)
ab3c759a 6960 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
89b667f8
JB		 6961 0x0df40000);
6962 else
ab3c759a 6963 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
89b667f8
JB		 6964 0x0df70000);
6965 } else { /* HDMI or VGA */
6966 /* Use bend source */
bdd4b6a6 6967 if (pipe == PIPE_A)
ab3c759a 6968 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
89b667f8
JB		 6969 0x0df70000);
6970 else
ab3c759a 6971 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
89b667f8
JB		 6972 0x0df40000);
6973 }
a0c4da24 6974
ab3c759a 6975 coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
89b667f8 6976 coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
409ee761
ACO		 6977 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
6978 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
89b667f8 6979 coreclk |= 0x01000000;
ab3c759a 6980 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
a0c4da24 6981
ab3c759a 6982 vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
09153000 6983 mutex_unlock(&dev_priv->dpio_lock);
a0c4da24
JB		 6984}
6985
d288f65f 6986static void chv_update_pll(struct intel_crtc *crtc,
5cec258b 6987 struct intel_crtc_state *pipe_config)
1ae0d137 6988{
d288f65f 6989 pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLOCK_CHV |
1ae0d137
VS		 6990 DPLL_REFA_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS |
6991 DPLL_VCO_ENABLE;
6992 if (crtc->pipe != PIPE_A)
d288f65f 6993 pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
1ae0d137 6994
d288f65f
VS		 6995 pipe_config->dpll_hw_state.dpll_md =
6996 (pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
1ae0d137
VS		 6997}
6998
d288f65f 6999static void chv_prepare_pll(struct intel_crtc *crtc,
5cec258b 7000 const struct intel_crtc_state *pipe_config)
9d556c99
CML		 7001{
7002 struct drm_device *dev = crtc->base.dev;
7003 struct drm_i915_private *dev_priv = dev->dev_private;
7004 int pipe = crtc->pipe;
7005 int dpll_reg = DPLL(crtc->pipe);
7006 enum dpio_channel port = vlv_pipe_to_channel(pipe);
9cbe40c1 7007 u32 loopfilter, tribuf_calcntr;
9d556c99 7008 u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
a945ce7e 7009 u32 dpio_val;
9cbe40c1 7010 int vco;
9d556c99 7011
d288f65f
VS		 7012 bestn = pipe_config->dpll.n;
7013 bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
7014 bestm1 = pipe_config->dpll.m1;
7015 bestm2 = pipe_config->dpll.m2 >> 22;
7016 bestp1 = pipe_config->dpll.p1;
7017 bestp2 = pipe_config->dpll.p2;
9cbe40c1 7018 vco = pipe_config->dpll.vco;
a945ce7e 7019 dpio_val = 0;
9cbe40c1 7020 loopfilter = 0;
9d556c99
CML		 7021
7022 /*
7023 * Enable Refclk and SSC
7024 */
a11b0703 7025 I915_WRITE(dpll_reg,
d288f65f 7026 pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
a11b0703
VS		 7027
7028 mutex_lock(&dev_priv->dpio_lock);
9d556c99 7029
9d556c99
CML		 7030 /* p1 and p2 divider */
7031 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
7032 5 << DPIO_CHV_S1_DIV_SHIFT |
7033 bestp1 << DPIO_CHV_P1_DIV_SHIFT |
7034 bestp2 << DPIO_CHV_P2_DIV_SHIFT |
7035 1 << DPIO_CHV_K_DIV_SHIFT);
7036
7037 /* Feedback post-divider - m2 */
7038 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
7039
7040 /* Feedback refclk divider - n and m1 */
7041 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
7042 DPIO_CHV_M1_DIV_BY_2 |
7043 1 << DPIO_CHV_N_DIV_SHIFT);
7044
7045 /* M2 fraction division */
a945ce7e
VP		 7046 if (bestm2_frac)
7047 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
9d556c99
CML		 7048
7049 /* M2 fraction division enable */
a945ce7e
VP		 7050 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
7051 dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
7052 dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
7053 if (bestm2_frac)
7054 dpio_val |= DPIO_CHV_FRAC_DIV_EN;
7055 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
9d556c99 7056
de3a0fde
VP		 7057 /* Program digital lock detect threshold */
7058 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
7059 dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
7060 DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
7061 dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
7062 if (!bestm2_frac)
7063 dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
7064 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
7065
9d556c99 7066 /* Loop filter */
9cbe40c1
VP		 7067 if (vco == 5400000) {
7068 loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
7069 loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
7070 loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
7071 tribuf_calcntr = 0x9;
7072 } else if (vco <= 6200000) {
7073 loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
7074 loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
7075 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7076 tribuf_calcntr = 0x9;
7077 } else if (vco <= 6480000) {
7078 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7079 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7080 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7081 tribuf_calcntr = 0x8;
7082 } else {
7083 /* Not supported. Apply the same limits as in the max case */
7084 loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
7085 loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
7086 loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
7087 tribuf_calcntr = 0;
7088 }
9d556c99
CML		 7089 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
7090
968040b2 7091 dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
9cbe40c1
VP		 7092 dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
7093 dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
7094 vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
7095
9d556c99
CML		 7096 /* AFC Recal */
7097 vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
7098 vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
7099 DPIO_AFC_RECAL);
7100
7101 mutex_unlock(&dev_priv->dpio_lock);
7102}
7103
d288f65f
VS		 7104/**
7105 * vlv_force_pll_on - forcibly enable just the PLL
7106 * @dev_priv: i915 private structure
7107 * @pipe: pipe PLL to enable
7108 * @dpll: PLL configuration
7109 *
7110 * Enable the PLL for @pipe using the supplied @dpll config. To be used
7111 * in cases where we need the PLL enabled even when @pipe is not going to
7112 * be enabled.
7113 */
7114void vlv_force_pll_on(struct drm_device *dev, enum pipe pipe,
7115 const struct dpll *dpll)
7116{
7117 struct intel_crtc *crtc =
7118 to_intel_crtc(intel_get_crtc_for_pipe(dev, pipe));
5cec258b 7119 struct intel_crtc_state pipe_config = {
a93e255f 7120 .base.crtc = &crtc->base,
d288f65f
VS		 7121 .pixel_multiplier = 1,
7122 .dpll = *dpll,
7123 };
7124
7125 if (IS_CHERRYVIEW(dev)) {
7126 chv_update_pll(crtc, &pipe_config);
7127 chv_prepare_pll(crtc, &pipe_config);
7128 chv_enable_pll(crtc, &pipe_config);
7129 } else {
7130 vlv_update_pll(crtc, &pipe_config);
7131 vlv_prepare_pll(crtc, &pipe_config);
7132 vlv_enable_pll(crtc, &pipe_config);
7133 }
7134}
7135
7136/**
7137 * vlv_force_pll_off - forcibly disable just the PLL
7138 * @dev_priv: i915 private structure
7139 * @pipe: pipe PLL to disable
7140 *
7141 * Disable the PLL for @pipe. To be used in cases where we need
7142 * the PLL enabled even when @pipe is not going to be enabled.
7143 */
7144void vlv_force_pll_off(struct drm_device *dev, enum pipe pipe)
7145{
7146 if (IS_CHERRYVIEW(dev))
7147 chv_disable_pll(to_i915(dev), pipe);
7148 else
7149 vlv_disable_pll(to_i915(dev), pipe);
7150}
7151
f47709a9 7152static void i9xx_update_pll(struct intel_crtc *crtc,
190f68c5 7153 struct intel_crtc_state *crtc_state,
f47709a9 7154 intel_clock_t *reduced_clock,
eb1cbe48
DV		 7155 int num_connectors)
7156{
f47709a9 7157 struct drm_device *dev = crtc->base.dev;
eb1cbe48 7158 struct drm_i915_private *dev_priv = dev->dev_private;
eb1cbe48
DV		 7159 u32 dpll;
7160 bool is_sdvo;
190f68c5 7161 struct dpll *clock = &crtc_state->dpll;
eb1cbe48 7162
190f68c5 7163 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
2a8f64ca 7164
a93e255f
ACO		 7165 is_sdvo = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_SDVO) ||
7166 intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_HDMI);
eb1cbe48
DV		 7167
7168 dpll = DPLL_VGA_MODE_DIS;
7169
a93e255f 7170 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS))
eb1cbe48
DV		 7171 dpll |= DPLLB_MODE_LVDS;
7172 else
7173 dpll |= DPLLB_MODE_DAC_SERIAL;
6cc5f341 7174
ef1b460d 7175 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
190f68c5 7176 dpll |= (crtc_state->pixel_multiplier - 1)
198a037f 7177 << SDVO_MULTIPLIER_SHIFT_HIRES;
eb1cbe48 7178 }
198a037f
DV		 7179
7180 if (is_sdvo)
4a33e48d 7181 dpll |= DPLL_SDVO_HIGH_SPEED;
198a037f 7182
190f68c5 7183 if (crtc_state->has_dp_encoder)
4a33e48d 7184 dpll |= DPLL_SDVO_HIGH_SPEED;
eb1cbe48
DV		 7185
7186 /* compute bitmask from p1 value */
7187 if (IS_PINEVIEW(dev))
7188 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
7189 else {
7190 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7191 if (IS_G4X(dev) && reduced_clock)
7192 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
7193 }
7194 switch (clock->p2) {
7195 case 5:
7196 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
7197 break;
7198 case 7:
7199 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
7200 break;
7201 case 10:
7202 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
7203 break;
7204 case 14:
7205 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
7206 break;
7207 }
7208 if (INTEL_INFO(dev)->gen >= 4)
7209 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
7210
190f68c5 7211 if (crtc_state->sdvo_tv_clock)
eb1cbe48 7212 dpll |= PLL_REF_INPUT_TVCLKINBC;
a93e255f 7213 else if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
eb1cbe48
DV		 7214 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7215 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7216 else
7217 dpll |= PLL_REF_INPUT_DREFCLK;
7218
7219 dpll |= DPLL_VCO_ENABLE;
190f68c5 7220 crtc_state->dpll_hw_state.dpll = dpll;
8bcc2795 7221
eb1cbe48 7222 if (INTEL_INFO(dev)->gen >= 4) {
190f68c5 7223 u32 dpll_md = (crtc_state->pixel_multiplier - 1)
ef1b460d 7224 << DPLL_MD_UDI_MULTIPLIER_SHIFT;
190f68c5 7225 crtc_state->dpll_hw_state.dpll_md = dpll_md;
eb1cbe48
DV		 7226 }
7227}
7228
f47709a9 7229static void i8xx_update_pll(struct intel_crtc *crtc,
190f68c5 7230 struct intel_crtc_state *crtc_state,
f47709a9 7231 intel_clock_t *reduced_clock,
eb1cbe48
DV		 7232 int num_connectors)
7233{
f47709a9 7234 struct drm_device *dev = crtc->base.dev;
eb1cbe48 7235 struct drm_i915_private *dev_priv = dev->dev_private;
eb1cbe48 7236 u32 dpll;
190f68c5 7237 struct dpll *clock = &crtc_state->dpll;
eb1cbe48 7238
190f68c5 7239 i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
2a8f64ca 7240
eb1cbe48
DV		 7241 dpll = DPLL_VGA_MODE_DIS;
7242
a93e255f 7243 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS)) {
eb1cbe48
DV		 7244 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7245 } else {
7246 if (clock->p1 == 2)
7247 dpll |= PLL_P1_DIVIDE_BY_TWO;
7248 else
7249 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
7250 if (clock->p2 == 4)
7251 dpll |= PLL_P2_DIVIDE_BY_4;
7252 }
7253
a93e255f 7254 if (!IS_I830(dev) && intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_DVO))
4a33e48d
DV		 7255 dpll |= DPLL_DVO_2X_MODE;
7256
a93e255f 7257 if (intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS) &&
eb1cbe48
DV		 7258 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
7259 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
7260 else
7261 dpll |= PLL_REF_INPUT_DREFCLK;
7262
7263 dpll |= DPLL_VCO_ENABLE;
190f68c5 7264 crtc_state->dpll_hw_state.dpll = dpll;
eb1cbe48
DV		 7265}
7266
8a654f3b 7267static void intel_set_pipe_timings(struct intel_crtc *intel_crtc)
b0e77b9c
PZ		 7268{
7269 struct drm_device *dev = intel_crtc->base.dev;
7270 struct drm_i915_private *dev_priv = dev->dev_private;
7271 enum pipe pipe = intel_crtc->pipe;
6e3c9717 7272 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
8a654f3b 7273 struct drm_display_mode *adjusted_mode =
6e3c9717 7274 &intel_crtc->config->base.adjusted_mode;
1caea6e9
VS		 7275 uint32_t crtc_vtotal, crtc_vblank_end;
7276 int vsyncshift = 0;
4d8a62ea
DV		 7277
7278 /* We need to be careful not to changed the adjusted mode, for otherwise
7279 * the hw state checker will get angry at the mismatch. */
7280 crtc_vtotal = adjusted_mode->crtc_vtotal;
7281 crtc_vblank_end = adjusted_mode->crtc_vblank_end;
b0e77b9c 7282
609aeaca 7283 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
b0e77b9c 7284 /* the chip adds 2 halflines automatically */
4d8a62ea
DV		 7285 crtc_vtotal -= 1;
7286 crtc_vblank_end -= 1;
609aeaca 7287
409ee761 7288 if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
609aeaca
VS		 7289 vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
7290 else
7291 vsyncshift = adjusted_mode->crtc_hsync_start -
7292 adjusted_mode->crtc_htotal / 2;
1caea6e9
VS		 7293 if (vsyncshift < 0)
7294 vsyncshift += adjusted_mode->crtc_htotal;
b0e77b9c
PZ		 7295 }
7296
7297 if (INTEL_INFO(dev)->gen > 3)
fe2b8f9d 7298 I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
b0e77b9c 7299
fe2b8f9d 7300 I915_WRITE(HTOTAL(cpu_transcoder),
b0e77b9c
PZ		 7301 (adjusted_mode->crtc_hdisplay - 1) |
7302 ((adjusted_mode->crtc_htotal - 1) << 16));
fe2b8f9d 7303 I915_WRITE(HBLANK(cpu_transcoder),
b0e77b9c
PZ		 7304 (adjusted_mode->crtc_hblank_start - 1) |
7305 ((adjusted_mode->crtc_hblank_end - 1) << 16));
fe2b8f9d 7306 I915_WRITE(HSYNC(cpu_transcoder),
b0e77b9c
PZ		 7307 (adjusted_mode->crtc_hsync_start - 1) |
7308 ((adjusted_mode->crtc_hsync_end - 1) << 16));
7309
fe2b8f9d 7310 I915_WRITE(VTOTAL(cpu_transcoder),
b0e77b9c 7311 (adjusted_mode->crtc_vdisplay - 1) |
4d8a62ea 7312 ((crtc_vtotal - 1) << 16));
fe2b8f9d 7313 I915_WRITE(VBLANK(cpu_transcoder),
b0e77b9c 7314 (adjusted_mode->crtc_vblank_start - 1) |
4d8a62ea 7315 ((crtc_vblank_end - 1) << 16));
fe2b8f9d 7316 I915_WRITE(VSYNC(cpu_transcoder),
b0e77b9c
PZ		 7317 (adjusted_mode->crtc_vsync_start - 1) |
7318 ((adjusted_mode->crtc_vsync_end - 1) << 16));
7319
b5e508d4
PZ		 7320 /* Workaround: when the EDP input selection is B, the VTOTAL_B must be
7321 * programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
7322 * documented on the DDI_FUNC_CTL register description, EDP Input Select
7323 * bits. */
7324 if (IS_HASWELL(dev) && cpu_transcoder == TRANSCODER_EDP &&
7325 (pipe == PIPE_B || pipe == PIPE_C))
7326 I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
7327
b0e77b9c
PZ		 7328 /* pipesrc controls the size that is scaled from, which should
7329 * always be the user's requested size.
7330 */
7331 I915_WRITE(PIPESRC(pipe),
6e3c9717
ACO		 7332 ((intel_crtc->config->pipe_src_w - 1) << 16) |
7333 (intel_crtc->config->pipe_src_h - 1));
b0e77b9c
PZ		 7334}
7335
1bd1bd80 7336static void intel_get_pipe_timings(struct intel_crtc *crtc,
5cec258b 7337 struct intel_crtc_state *pipe_config)
1bd1bd80
DV		 7338{
7339 struct drm_device *dev = crtc->base.dev;
7340 struct drm_i915_private *dev_priv = dev->dev_private;
7341 enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
7342 uint32_t tmp;
7343
7344 tmp = I915_READ(HTOTAL(cpu_transcoder));
2d112de7
ACO		 7345 pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
7346 pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80 7347 tmp = I915_READ(HBLANK(cpu_transcoder));
2d112de7
ACO		 7348 pipe_config->base.adjusted_mode.crtc_hblank_start = (tmp & 0xffff) + 1;
7349 pipe_config->base.adjusted_mode.crtc_hblank_end = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80 7350 tmp = I915_READ(HSYNC(cpu_transcoder));
2d112de7
ACO		 7351 pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
7352 pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80
DV		 7353
7354 tmp = I915_READ(VTOTAL(cpu_transcoder));
2d112de7
ACO		 7355 pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
7356 pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80 7357 tmp = I915_READ(VBLANK(cpu_transcoder));
2d112de7
ACO		 7358 pipe_config->base.adjusted_mode.crtc_vblank_start = (tmp & 0xffff) + 1;
7359 pipe_config->base.adjusted_mode.crtc_vblank_end = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80 7360 tmp = I915_READ(VSYNC(cpu_transcoder));
2d112de7
ACO		 7361 pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
7362 pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
1bd1bd80
DV		 7363
7364 if (I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK) {
2d112de7
ACO		 7365 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
7366 pipe_config->base.adjusted_mode.crtc_vtotal += 1;
7367 pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
1bd1bd80
DV		 7368 }
7369
7370 tmp = I915_READ(PIPESRC(crtc->pipe));
37327abd
VS		 7371 pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
7372 pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
7373
2d112de7
ACO		 7374 pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
7375 pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
1bd1bd80
DV		 7376}
7377
f6a83288 7378void intel_mode_from_pipe_config(struct drm_display_mode *mode,
5cec258b 7379 struct intel_crtc_state *pipe_config)
babea61d 7380{
2d112de7
ACO		 7381 mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
7382 mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
7383 mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
7384 mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
babea61d 7385
2d112de7
ACO		 7386 mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
7387 mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
7388 mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
7389 mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
babea61d 7390
2d112de7 7391 mode->flags = pipe_config->base.adjusted_mode.flags;
babea61d 7392
2d112de7
ACO		 7393 mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
7394 mode->flags |= pipe_config->base.adjusted_mode.flags;
babea61d
JB		 7395}
7396
84b046f3
DV		 7397static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
7398{
7399 struct drm_device *dev = intel_crtc->base.dev;
7400 struct drm_i915_private *dev_priv = dev->dev_private;
7401 uint32_t pipeconf;
7402
9f11a9e4 7403 pipeconf = 0;
84b046f3 7404
b6b5d049
VS		 7405 if ((intel_crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
7406 (intel_crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
7407 pipeconf |= I915_READ(PIPECONF(intel_crtc->pipe)) & PIPECONF_ENABLE;
67c72a12 7408
6e3c9717 7409 if (intel_crtc->config->double_wide)
cf532bb2 7410 pipeconf |= PIPECONF_DOUBLE_WIDE;
84b046f3 7411
ff9ce46e
DV		 7412 /* only g4x and later have fancy bpc/dither controls */
7413 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
ff9ce46e 7414 /* Bspec claims that we can't use dithering for 30bpp pipes. */
6e3c9717 7415 if (intel_crtc->config->dither && intel_crtc->config->pipe_bpp != 30)
ff9ce46e 7416 pipeconf |= PIPECONF_DITHER_EN |
84b046f3 7417 PIPECONF_DITHER_TYPE_SP;
84b046f3 7418
6e3c9717 7419 switch (intel_crtc->config->pipe_bpp) {
ff9ce46e
DV		 7420 case 18:
7421 pipeconf |= PIPECONF_6BPC;
7422 break;
7423 case 24:
7424 pipeconf |= PIPECONF_8BPC;
7425 break;
7426 case 30:
7427 pipeconf |= PIPECONF_10BPC;
7428 break;
7429 default:
7430 /* Case prevented by intel_choose_pipe_bpp_dither. */
7431 BUG();
84b046f3
DV		 7432 }
7433 }
7434
7435 if (HAS_PIPE_CXSR(dev)) {
7436 if (intel_crtc->lowfreq_avail) {
7437 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
7438 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
7439 } else {
7440 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
84b046f3
DV		 7441 }
7442 }
7443
6e3c9717 7444 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
efc2cfff 7445 if (INTEL_INFO(dev)->gen < 4 ||
409ee761 7446 intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_SDVO))
efc2cfff
VS		 7447 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
7448 else
7449 pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
7450 } else
84b046f3
DV		 7451 pipeconf |= PIPECONF_PROGRESSIVE;
7452
6e3c9717 7453 if (IS_VALLEYVIEW(dev) && intel_crtc->config->limited_color_range)
9f11a9e4 7454 pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
9c8e09b7 7455
84b046f3
DV		 7456 I915_WRITE(PIPECONF(intel_crtc->pipe), pipeconf);
7457 POSTING_READ(PIPECONF(intel_crtc->pipe));
7458}
7459
190f68c5
ACO		 7460static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
7461 struct intel_crtc_state *crtc_state)
79e53945 7462{
c7653199 7463 struct drm_device *dev = crtc->base.dev;
79e53945 7464 struct drm_i915_private *dev_priv = dev->dev_private;
c751ce4f 7465 int refclk, num_connectors = 0;
652c393a 7466 intel_clock_t clock, reduced_clock;
a16af721 7467 bool ok, has_reduced_clock = false;
e9fd1c02 7468 bool is_lvds = false, is_dsi = false;
5eddb70b 7469 struct intel_encoder *encoder;
d4906093 7470 const intel_limit_t *limit;
55bb9992 7471 struct drm_atomic_state *state = crtc_state->base.state;
da3ced29 7472 struct drm_connector *connector;
55bb9992
ACO		 7473 struct drm_connector_state *connector_state;
7474 int i;
79e53945 7475
da3ced29 7476 for_each_connector_in_state(state, connector, connector_state, i) {
55bb9992
ACO		 7477 if (connector_state->crtc != &crtc->base)
7478 continue;
7479
7480 encoder = to_intel_encoder(connector_state->best_encoder);
7481
5eddb70b 7482 switch (encoder->type) {
79e53945
JB		 7483 case INTEL_OUTPUT_LVDS:
7484 is_lvds = true;
7485 break;
e9fd1c02
JN		 7486 case INTEL_OUTPUT_DSI:
7487 is_dsi = true;
7488 break;
6847d71b
PZ		 7489 default:
7490 break;
79e53945 7491 }
43565a06 7492
c751ce4f 7493 num_connectors++;
79e53945
JB		 7494 }
7495
f2335330 7496 if (is_dsi)
5b18e57c 7497 return 0;
f2335330 7498
190f68c5 7499 if (!crtc_state->clock_set) {
a93e255f 7500 refclk = i9xx_get_refclk(crtc_state, num_connectors);
79e53945 7501
e9fd1c02
JN		 7502 /*
7503 * Returns a set of divisors for the desired target clock with
7504 * the given refclk, or FALSE. The returned values represent
7505 * the clock equation: reflck * (5 * (m1 + 2) + (m2 + 2)) / (n +
7506 * 2) / p1 / p2.
7507 */
a93e255f
ACO		 7508 limit = intel_limit(crtc_state, refclk);
7509 ok = dev_priv->display.find_dpll(limit, crtc_state,
190f68c5 7510 crtc_state->port_clock,
e9fd1c02 7511 refclk, NULL, &clock);
f2335330 7512 if (!ok) {
e9fd1c02
JN		 7513 DRM_ERROR("Couldn't find PLL settings for mode!\n");
7514 return -EINVAL;
7515 }
79e53945 7516
f2335330
JN		 7517 if (is_lvds && dev_priv->lvds_downclock_avail) {
7518 /*
7519 * Ensure we match the reduced clock's P to the target
7520 * clock. If the clocks don't match, we can't switch
7521 * the display clock by using the FP0/FP1. In such case
7522 * we will disable the LVDS downclock feature.
7523 */
7524 has_reduced_clock =
a93e255f 7525 dev_priv->display.find_dpll(limit, crtc_state,
f2335330
JN		 7526 dev_priv->lvds_downclock,
7527 refclk, &clock,
7528 &reduced_clock);
7529 }
7530 /* Compat-code for transition, will disappear. */
190f68c5
ACO		 7531 crtc_state->dpll.n = clock.n;
7532 crtc_state->dpll.m1 = clock.m1;
7533 crtc_state->dpll.m2 = clock.m2;
7534 crtc_state->dpll.p1 = clock.p1;
7535 crtc_state->dpll.p2 = clock.p2;
f47709a9 7536 }
7026d4ac 7537
e9fd1c02 7538 if (IS_GEN2(dev)) {
190f68c5 7539 i8xx_update_pll(crtc, crtc_state,
2a8f64ca
VP		 7540 has_reduced_clock ? &reduced_clock : NULL,
7541 num_connectors);
9d556c99 7542 } else if (IS_CHERRYVIEW(dev)) {
190f68c5 7543 chv_update_pll(crtc, crtc_state);
e9fd1c02 7544 } else if (IS_VALLEYVIEW(dev)) {
190f68c5 7545 vlv_update_pll(crtc, crtc_state);
e9fd1c02 7546 } else {
190f68c5 7547 i9xx_update_pll(crtc, crtc_state,
eb1cbe48 7548 has_reduced_clock ? &reduced_clock : NULL,
eba905b2 7549 num_connectors);
e9fd1c02 7550 }
79e53945 7551
c8f7a0db 7552 return 0;
f564048e
EA		 7553}
7554
2fa2fe9a 7555static void i9xx_get_pfit_config(struct intel_crtc *crtc,
5cec258b 7556 struct intel_crtc_state *pipe_config)
2fa2fe9a
DV		 7557{
7558 struct drm_device *dev = crtc->base.dev;
7559 struct drm_i915_private *dev_priv = dev->dev_private;
7560 uint32_t tmp;
7561
dc9e7dec
VS		 7562 if (INTEL_INFO(dev)->gen <= 3 && (IS_I830(dev) || !IS_MOBILE(dev)))
7563 return;
7564
2fa2fe9a 7565 tmp = I915_READ(PFIT_CONTROL);
06922821
DV		 7566 if (!(tmp & PFIT_ENABLE))
7567 return;
2fa2fe9a 7568
06922821 7569 /* Check whether the pfit is attached to our pipe. */
2fa2fe9a
DV		 7570 if (INTEL_INFO(dev)->gen < 4) {
7571 if (crtc->pipe != PIPE_B)
7572 return;
2fa2fe9a
DV		 7573 } else {
7574 if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
7575 return;
7576 }
7577
06922821 7578 pipe_config->gmch_pfit.control = tmp;
2fa2fe9a
DV		 7579 pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
7580 if (INTEL_INFO(dev)->gen < 5)
7581 pipe_config->gmch_pfit.lvds_border_bits =
7582 I915_READ(LVDS) & LVDS_BORDER_ENABLE;
7583}
7584
acbec814 7585static void vlv_crtc_clock_get(struct intel_crtc *crtc,
5cec258b 7586 struct intel_crtc_state *pipe_config)
acbec814
JB		 7587{
7588 struct drm_device *dev = crtc->base.dev;
7589 struct drm_i915_private *dev_priv = dev->dev_private;
7590 int pipe = pipe_config->cpu_transcoder;
7591 intel_clock_t clock;
7592 u32 mdiv;
662c6ecb 7593 int refclk = 100000;
acbec814 7594
f573de5a
SK		 7595 /* In case of MIPI DPLL will not even be used */
7596 if (!(pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE))
7597 return;
7598
acbec814 7599 mutex_lock(&dev_priv->dpio_lock);
ab3c759a 7600 mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
acbec814
JB		 7601 mutex_unlock(&dev_priv->dpio_lock);
7602
7603 clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
7604 clock.m2 = mdiv & DPIO_M2DIV_MASK;
7605 clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
7606 clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
7607 clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
7608
f646628b 7609 vlv_clock(refclk, &clock);
acbec814 7610
f646628b
VS		 7611 /* clock.dot is the fast clock */
7612 pipe_config->port_clock = clock.dot / 5;
acbec814
JB		 7613}
7614
5724dbd1
DL		 7615static void
7616i9xx_get_initial_plane_config(struct intel_crtc *crtc,
7617 struct intel_initial_plane_config *plane_config)
1ad292b5
JB		 7618{
7619 struct drm_device *dev = crtc->base.dev;
7620 struct drm_i915_private *dev_priv = dev->dev_private;
7621 u32 val, base, offset;
7622 int pipe = crtc->pipe, plane = crtc->plane;
7623 int fourcc, pixel_format;
6761dd31 7624 unsigned int aligned_height;
b113d5ee 7625 struct drm_framebuffer *fb;
1b842c89 7626 struct intel_framebuffer *intel_fb;
1ad292b5 7627
42a7b088
DL		 7628 val = I915_READ(DSPCNTR(plane));
7629 if (!(val & DISPLAY_PLANE_ENABLE))
7630 return;
7631
d9806c9f 7632 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
1b842c89 7633 if (!intel_fb) {
1ad292b5
JB		 7634 DRM_DEBUG_KMS("failed to alloc fb\n");
7635 return;
7636 }
7637
1b842c89
DL		 7638 fb = &intel_fb->base;
7639
18c5247e
DV		 7640 if (INTEL_INFO(dev)->gen >= 4) {
7641 if (val & DISPPLANE_TILED) {
49af449b 7642 plane_config->tiling = I915_TILING_X;
18c5247e
DV		 7643 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
7644 }
7645 }
1ad292b5
JB		 7646
7647 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
b35d63fa 7648 fourcc = i9xx_format_to_fourcc(pixel_format);
b113d5ee
DL		 7649 fb->pixel_format = fourcc;
7650 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
1ad292b5
JB		 7651
7652 if (INTEL_INFO(dev)->gen >= 4) {
49af449b 7653 if (plane_config->tiling)
1ad292b5
JB		 7654 offset = I915_READ(DSPTILEOFF(plane));
7655 else
7656 offset = I915_READ(DSPLINOFF(plane));
7657 base = I915_READ(DSPSURF(plane)) & 0xfffff000;
7658 } else {
7659 base = I915_READ(DSPADDR(plane));
7660 }
7661 plane_config->base = base;
7662
7663 val = I915_READ(PIPESRC(pipe));
b113d5ee
DL		 7664 fb->width = ((val >> 16) & 0xfff) + 1;
7665 fb->height = ((val >> 0) & 0xfff) + 1;
1ad292b5
JB		 7666
7667 val = I915_READ(DSPSTRIDE(pipe));
b113d5ee 7668 fb->pitches[0] = val & 0xffffffc0;
1ad292b5 7669
b113d5ee 7670 aligned_height = intel_fb_align_height(dev, fb->height,
091df6cb
DV		 7671 fb->pixel_format,
7672 fb->modifier[0]);
1ad292b5 7673
f37b5c2b 7674 plane_config->size = fb->pitches[0] * aligned_height;
1ad292b5 7675
2844a921
DL		 7676 DRM_DEBUG_KMS("pipe/plane %c/%d with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
7677 pipe_name(pipe), plane, fb->width, fb->height,
7678 fb->bits_per_pixel, base, fb->pitches[0],
7679 plane_config->size);
1ad292b5 7680
2d14030b 7681 plane_config->fb = intel_fb;
1ad292b5
JB		 7682}
7683
70b23a98 7684static void chv_crtc_clock_get(struct intel_crtc *crtc,
5cec258b 7685 struct intel_crtc_state *pipe_config)
70b23a98
VS		 7686{
7687 struct drm_device *dev = crtc->base.dev;
7688 struct drm_i915_private *dev_priv = dev->dev_private;
7689 int pipe = pipe_config->cpu_transcoder;
7690 enum dpio_channel port = vlv_pipe_to_channel(pipe);
7691 intel_clock_t clock;
7692 u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2;
7693 int refclk = 100000;
7694
7695 mutex_lock(&dev_priv->dpio_lock);
7696 cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
7697 pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
7698 pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
7699 pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
7700 mutex_unlock(&dev_priv->dpio_lock);
7701
7702 clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
7703 clock.m2 = ((pll_dw0 & 0xff) << 22) | (pll_dw2 & 0x3fffff);
7704 clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
7705 clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
7706 clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
7707
7708 chv_clock(refclk, &clock);
7709
7710 /* clock.dot is the fast clock */
7711 pipe_config->port_clock = clock.dot / 5;
7712}
7713
0e8ffe1b 7714static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
5cec258b 7715 struct intel_crtc_state *pipe_config)
0e8ffe1b
DV		 7716{
7717 struct drm_device *dev = crtc->base.dev;
7718 struct drm_i915_private *dev_priv = dev->dev_private;
7719 uint32_t tmp;
7720
f458ebbc
DV		 7721 if (!intel_display_power_is_enabled(dev_priv,
7722 POWER_DOMAIN_PIPE(crtc->pipe)))
b5482bd0
ID		 7723 return false;
7724
e143a21c 7725 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
c0d43d62 7726 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
eccb140b 7727
0e8ffe1b
DV		 7728 tmp = I915_READ(PIPECONF(crtc->pipe));
7729 if (!(tmp & PIPECONF_ENABLE))
7730 return false;
7731
42571aef
VS		 7732 if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
7733 switch (tmp & PIPECONF_BPC_MASK) {
7734 case PIPECONF_6BPC:
7735 pipe_config->pipe_bpp = 18;
7736 break;
7737 case PIPECONF_8BPC:
7738 pipe_config->pipe_bpp = 24;
7739 break;
7740 case PIPECONF_10BPC:
7741 pipe_config->pipe_bpp = 30;
7742 break;
7743 default:
7744 break;
7745 }
7746 }
7747
b5a9fa09
DV		 7748 if (IS_VALLEYVIEW(dev) && (tmp & PIPECONF_COLOR_RANGE_SELECT))
7749 pipe_config->limited_color_range = true;
7750
282740f7
VS		 7751 if (INTEL_INFO(dev)->gen < 4)
7752 pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
7753
1bd1bd80
DV		 7754 intel_get_pipe_timings(crtc, pipe_config);
7755
2fa2fe9a
DV		 7756 i9xx_get_pfit_config(crtc, pipe_config);
7757
6c49f241
DV		 7758 if (INTEL_INFO(dev)->gen >= 4) {
7759 tmp = I915_READ(DPLL_MD(crtc->pipe));
7760 pipe_config->pixel_multiplier =
7761 ((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
7762 >> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
8bcc2795 7763 pipe_config->dpll_hw_state.dpll_md = tmp;
6c49f241
DV		 7764 } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
7765 tmp = I915_READ(DPLL(crtc->pipe));
7766 pipe_config->pixel_multiplier =
7767 ((tmp & SDVO_MULTIPLIER_MASK)
7768 >> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
7769 } else {
7770 /* Note that on i915G/GM the pixel multiplier is in the sdvo
7771 * port and will be fixed up in the encoder->get_config
7772 * function. */
7773 pipe_config->pixel_multiplier = 1;
7774 }
8bcc2795
DV		 7775 pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
7776 if (!IS_VALLEYVIEW(dev)) {
1c4e0274
VS		 7777 /*
7778 * DPLL_DVO_2X_MODE must be enabled for both DPLLs
7779 * on 830. Filter it out here so that we don't
7780 * report errors due to that.
7781 */
7782 if (IS_I830(dev))
7783 pipe_config->dpll_hw_state.dpll &= ~DPLL_DVO_2X_MODE;
7784
8bcc2795
DV		 7785 pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
7786 pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
165e901c
VS		 7787 } else {
7788 /* Mask out read-only status bits. */
7789 pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
7790 DPLL_PORTC_READY_MASK |
7791 DPLL_PORTB_READY_MASK);
8bcc2795 7792 }
6c49f241 7793
70b23a98
VS		 7794 if (IS_CHERRYVIEW(dev))
7795 chv_crtc_clock_get(crtc, pipe_config);
7796 else if (IS_VALLEYVIEW(dev))
acbec814
JB		 7797 vlv_crtc_clock_get(crtc, pipe_config);
7798 else
7799 i9xx_crtc_clock_get(crtc, pipe_config);
18442d08 7800
0e8ffe1b
DV		 7801 return true;
7802}
7803
dde86e2d 7804static void ironlake_init_pch_refclk(struct drm_device *dev)
13d83a67
JB		 7805{
7806 struct drm_i915_private *dev_priv = dev->dev_private;
13d83a67 7807 struct intel_encoder *encoder;
74cfd7ac 7808 u32 val, final;
13d83a67 7809 bool has_lvds = false;
199e5d79 7810 bool has_cpu_edp = false;
199e5d79 7811 bool has_panel = false;
99eb6a01
KP		 7812 bool has_ck505 = false;
7813 bool can_ssc = false;
13d83a67
JB		 7814
7815 /* We need to take the global config into account */
b2784e15 7816 for_each_intel_encoder(dev, encoder) {
199e5d79
KP		 7817 switch (encoder->type) {
7818 case INTEL_OUTPUT_LVDS:
7819 has_panel = true;
7820 has_lvds = true;
7821 break;
7822 case INTEL_OUTPUT_EDP:
7823 has_panel = true;
2de6905f 7824 if (enc_to_dig_port(&encoder->base)->port == PORT_A)
199e5d79
KP		 7825 has_cpu_edp = true;
7826 break;
6847d71b
PZ		 7827 default:
7828 break;
13d83a67
JB		 7829 }
7830 }
7831
99eb6a01 7832 if (HAS_PCH_IBX(dev)) {
41aa3448 7833 has_ck505 = dev_priv->vbt.display_clock_mode;
99eb6a01
KP		 7834 can_ssc = has_ck505;
7835 } else {
7836 has_ck505 = false;
7837 can_ssc = true;
7838 }
7839
2de6905f
ID		 7840 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d\n",
7841 has_panel, has_lvds, has_ck505);
13d83a67
JB		 7842
7843 /* Ironlake: try to setup display ref clock before DPLL
7844 * enabling. This is only under driver's control after
7845 * PCH B stepping, previous chipset stepping should be
7846 * ignoring this setting.
7847 */
74cfd7ac
CW		 7848 val = I915_READ(PCH_DREF_CONTROL);
7849
7850 /* As we must carefully and slowly disable/enable each source in turn,
7851 * compute the final state we want first and check if we need to
7852 * make any changes at all.
7853 */
7854 final = val;
7855 final &= ~DREF_NONSPREAD_SOURCE_MASK;
7856 if (has_ck505)
7857 final |= DREF_NONSPREAD_CK505_ENABLE;
7858 else
7859 final |= DREF_NONSPREAD_SOURCE_ENABLE;
7860
7861 final &= ~DREF_SSC_SOURCE_MASK;
7862 final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
7863 final &= ~DREF_SSC1_ENABLE;
7864
7865 if (has_panel) {
7866 final |= DREF_SSC_SOURCE_ENABLE;
7867
7868 if (intel_panel_use_ssc(dev_priv) && can_ssc)
7869 final |= DREF_SSC1_ENABLE;
7870
7871 if (has_cpu_edp) {
7872 if (intel_panel_use_ssc(dev_priv) && can_ssc)
7873 final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
7874 else
7875 final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
7876 } else
7877 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
7878 } else {
7879 final |= DREF_SSC_SOURCE_DISABLE;
7880 final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
7881 }
7882
7883 if (final == val)
7884 return;
7885
13d83a67 7886 /* Always enable nonspread source */
74cfd7ac 7887 val &= ~DREF_NONSPREAD_SOURCE_MASK;
13d83a67 7888
99eb6a01 7889 if (has_ck505)
74cfd7ac 7890 val |= DREF_NONSPREAD_CK505_ENABLE;
99eb6a01 7891 else
74cfd7ac 7892 val |= DREF_NONSPREAD_SOURCE_ENABLE;
13d83a67 7893
199e5d79 7894 if (has_panel) {
74cfd7ac
CW		 7895 val &= ~DREF_SSC_SOURCE_MASK;
7896 val |= DREF_SSC_SOURCE_ENABLE;
13d83a67 7897
199e5d79 7898 /* SSC must be turned on before enabling the CPU output */
99eb6a01 7899 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
199e5d79 7900 DRM_DEBUG_KMS("Using SSC on panel\n");
74cfd7ac 7901 val |= DREF_SSC1_ENABLE;
e77166b5 7902 } else
74cfd7ac 7903 val &= ~DREF_SSC1_ENABLE;
199e5d79
KP		 7904
7905 /* Get SSC going before enabling the outputs */
74cfd7ac 7906 I915_WRITE(PCH_DREF_CONTROL, val);
199e5d79
KP		 7907 POSTING_READ(PCH_DREF_CONTROL);
7908 udelay(200);
7909
74cfd7ac 7910 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
13d83a67
JB		 7911
7912 /* Enable CPU source on CPU attached eDP */
199e5d79 7913 if (has_cpu_edp) {
99eb6a01 7914 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
199e5d79 7915 DRM_DEBUG_KMS("Using SSC on eDP\n");
74cfd7ac 7916 val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
eba905b2 7917 } else
74cfd7ac 7918 val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
199e5d79 7919 } else
74cfd7ac 7920 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
199e5d79 7921
74cfd7ac 7922 I915_WRITE(PCH_DREF_CONTROL, val);
199e5d79
KP		 7923 POSTING_READ(PCH_DREF_CONTROL);
7924 udelay(200);
7925 } else {
7926 DRM_DEBUG_KMS("Disabling SSC entirely\n");
7927
74cfd7ac 7928 val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
199e5d79
KP		 7929
7930 /* Turn off CPU output */
74cfd7ac 7931 val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
199e5d79 7932
74cfd7ac 7933 I915_WRITE(PCH_DREF_CONTROL, val);
199e5d79
KP		 7934 POSTING_READ(PCH_DREF_CONTROL);
7935 udelay(200);
7936
7937 /* Turn off the SSC source */
74cfd7ac
CW		 7938 val &= ~DREF_SSC_SOURCE_MASK;
7939 val |= DREF_SSC_SOURCE_DISABLE;
199e5d79
KP		 7940
7941 /* Turn off SSC1 */
74cfd7ac 7942 val &= ~DREF_SSC1_ENABLE;
199e5d79 7943
74cfd7ac 7944 I915_WRITE(PCH_DREF_CONTROL, val);
13d83a67
JB		 7945 POSTING_READ(PCH_DREF_CONTROL);
7946 udelay(200);
7947 }
74cfd7ac
CW		 7948
7949 BUG_ON(val != final);
13d83a67
JB		 7950}
7951
f31f2d55 7952static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
dde86e2d 7953{
f31f2d55 7954 uint32_t tmp;
dde86e2d 7955
0ff066a9
PZ		 7956 tmp = I915_READ(SOUTH_CHICKEN2);
7957 tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
7958 I915_WRITE(SOUTH_CHICKEN2, tmp);
dde86e2d 7959
0ff066a9
PZ		 7960 if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
7961 FDI_MPHY_IOSFSB_RESET_STATUS, 100))
7962 DRM_ERROR("FDI mPHY reset assert timeout\n");
dde86e2d 7963
0ff066a9
PZ		 7964 tmp = I915_READ(SOUTH_CHICKEN2);
7965 tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
7966 I915_WRITE(SOUTH_CHICKEN2, tmp);
dde86e2d 7967
0ff066a9
PZ		 7968 if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
7969 FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
7970 DRM_ERROR("FDI mPHY reset de-assert timeout\n");
f31f2d55
PZ		 7971}
7972
7973/* WaMPhyProgramming:hsw */
7974static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
7975{
7976 uint32_t tmp;
dde86e2d
PZ		 7977
7978 tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
7979 tmp &= ~(0xFF << 24);
7980 tmp |= (0x12 << 24);
7981 intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
7982
dde86e2d
PZ		 7983 tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
7984 tmp |= (1 << 11);
7985 intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
7986
7987 tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
7988 tmp |= (1 << 11);
7989 intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
7990
dde86e2d
PZ		 7991 tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
7992 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
7993 intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
7994
7995 tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
7996 tmp |= (1 << 24) | (1 << 21) | (1 << 18);
7997 intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
7998
0ff066a9
PZ		 7999 tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
8000 tmp &= ~(7 << 13);
8001 tmp |= (5 << 13);
8002 intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
dde86e2d 8003
0ff066a9
PZ		 8004 tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
8005 tmp &= ~(7 << 13);
8006 tmp |= (5 << 13);
8007 intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
dde86e2d
PZ		 8008
8009 tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
8010 tmp &= ~0xFF;
8011 tmp |= 0x1C;
8012 intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
8013
8014 tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
8015 tmp &= ~0xFF;
8016 tmp |= 0x1C;
8017 intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
8018
8019 tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
8020 tmp &= ~(0xFF << 16);
8021 tmp |= (0x1C << 16);
8022 intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
8023
8024 tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
8025 tmp &= ~(0xFF << 16);
8026 tmp |= (0x1C << 16);
8027 intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
8028
0ff066a9
PZ		 8029 tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
8030 tmp |= (1 << 27);
8031 intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
dde86e2d 8032
0ff066a9
PZ		 8033 tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
8034 tmp |= (1 << 27);
8035 intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
dde86e2d 8036
0ff066a9
PZ		 8037 tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
8038 tmp &= ~(0xF << 28);
8039 tmp |= (4 << 28);
8040 intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
dde86e2d 8041
0ff066a9
PZ		 8042 tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
8043 tmp &= ~(0xF << 28);
8044 tmp |= (4 << 28);
8045 intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
f31f2d55
PZ		 8046}
8047
2fa86a1f
PZ		 8048/* Implements 3 different sequences from BSpec chapter "Display iCLK
8049 * Programming" based on the parameters passed:
8050 * - Sequence to enable CLKOUT_DP
8051 * - Sequence to enable CLKOUT_DP without spread
8052 * - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
8053 */
8054static void lpt_enable_clkout_dp(struct drm_device *dev, bool with_spread,
8055 bool with_fdi)
f31f2d55
PZ		 8056{
8057 struct drm_i915_private *dev_priv = dev->dev_private;
2fa86a1f
PZ		 8058 uint32_t reg, tmp;
8059
8060 if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
8061 with_spread = true;
8062 if (WARN(dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE &&
8063 with_fdi, "LP PCH doesn't have FDI\n"))
8064 with_fdi = false;
f31f2d55
PZ		 8065
8066 mutex_lock(&dev_priv->dpio_lock);
8067
8068 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8069 tmp &= ~SBI_SSCCTL_DISABLE;
8070 tmp |= SBI_SSCCTL_PATHALT;
8071 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8072
8073 udelay(24);
8074
2fa86a1f
PZ		 8075 if (with_spread) {
8076 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8077 tmp &= ~SBI_SSCCTL_PATHALT;
8078 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
f31f2d55 8079
2fa86a1f
PZ		 8080 if (with_fdi) {
8081 lpt_reset_fdi_mphy(dev_priv);
8082 lpt_program_fdi_mphy(dev_priv);
8083 }
8084 }
dde86e2d 8085
2fa86a1f
PZ		 8086 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
8087 SBI_GEN0 : SBI_DBUFF0;
8088 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8089 tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8090 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
c00db246
DV		 8091
8092 mutex_unlock(&dev_priv->dpio_lock);
dde86e2d
PZ		 8093}
8094
47701c3b
PZ		 8095/* Sequence to disable CLKOUT_DP */
8096static void lpt_disable_clkout_dp(struct drm_device *dev)
8097{
8098 struct drm_i915_private *dev_priv = dev->dev_private;
8099 uint32_t reg, tmp;
8100
8101 mutex_lock(&dev_priv->dpio_lock);
8102
8103 reg = (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) ?
8104 SBI_GEN0 : SBI_DBUFF0;
8105 tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
8106 tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
8107 intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
8108
8109 tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
8110 if (!(tmp & SBI_SSCCTL_DISABLE)) {
8111 if (!(tmp & SBI_SSCCTL_PATHALT)) {
8112 tmp |= SBI_SSCCTL_PATHALT;
8113 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8114 udelay(32);
8115 }
8116 tmp |= SBI_SSCCTL_DISABLE;
8117 intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
8118 }
8119
8120 mutex_unlock(&dev_priv->dpio_lock);
8121}
8122
bf8fa3d3
PZ		 8123static void lpt_init_pch_refclk(struct drm_device *dev)
8124{
bf8fa3d3
PZ		 8125 struct intel_encoder *encoder;
8126 bool has_vga = false;
8127
b2784e15 8128 for_each_intel_encoder(dev, encoder) {
bf8fa3d3
PZ		 8129 switch (encoder->type) {
8130 case INTEL_OUTPUT_ANALOG:
8131 has_vga = true;
8132 break;
6847d71b
PZ		 8133 default:
8134 break;
bf8fa3d3
PZ		 8135 }
8136 }
8137
47701c3b
PZ		 8138 if (has_vga)
8139 lpt_enable_clkout_dp(dev, true, true);
8140 else
8141 lpt_disable_clkout_dp(dev);
bf8fa3d3
PZ		 8142}
8143
dde86e2d
PZ		 8144/*
8145 * Initialize reference clocks when the driver loads
8146 */
8147void intel_init_pch_refclk(struct drm_device *dev)
8148{
8149 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
8150 ironlake_init_pch_refclk(dev);
8151 else if (HAS_PCH_LPT(dev))
8152 lpt_init_pch_refclk(dev);
8153}
8154
55bb9992 8155static int ironlake_get_refclk(struct intel_crtc_state *crtc_state)
d9d444cb 8156{
55bb9992 8157 struct drm_device *dev = crtc_state->base.crtc->dev;
d9d444cb 8158 struct drm_i915_private *dev_priv = dev->dev_private;
55bb9992 8159 struct drm_atomic_state *state = crtc_state->base.state;
da3ced29 8160 struct drm_connector *connector;
55bb9992 8161 struct drm_connector_state *connector_state;
d9d444cb 8162 struct intel_encoder *encoder;
55bb9992 8163 int num_connectors = 0, i;
d9d444cb
JB		 8164 bool is_lvds = false;
8165
da3ced29 8166 for_each_connector_in_state(state, connector, connector_state, i) {
55bb9992
ACO		 8167 if (connector_state->crtc != crtc_state->base.crtc)
8168 continue;
8169
8170 encoder = to_intel_encoder(connector_state->best_encoder);
8171
d9d444cb
JB		 8172 switch (encoder->type) {
8173 case INTEL_OUTPUT_LVDS:
8174 is_lvds = true;
8175 break;
6847d71b
PZ		 8176 default:
8177 break;
d9d444cb
JB		 8178 }
8179 num_connectors++;
8180 }
8181
8182 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
e91e941b 8183 DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
41aa3448 8184 dev_priv->vbt.lvds_ssc_freq);
e91e941b 8185 return dev_priv->vbt.lvds_ssc_freq;
d9d444cb
JB		 8186 }
8187
8188 return 120000;
8189}
8190
6ff93609 8191static void ironlake_set_pipeconf(struct drm_crtc *crtc)
79e53945 8192{
c8203565 8193 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
79e53945
JB		 8194 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8195 int pipe = intel_crtc->pipe;
c8203565
PZ		 8196 uint32_t val;
8197
78114071 8198 val = 0;
c8203565 8199
6e3c9717 8200 switch (intel_crtc->config->pipe_bpp) {
c8203565 8201 case 18:
dfd07d72 8202 val |= PIPECONF_6BPC;
c8203565
PZ		 8203 break;
8204 case 24:
dfd07d72 8205 val |= PIPECONF_8BPC;
c8203565
PZ		 8206 break;
8207 case 30:
dfd07d72 8208 val |= PIPECONF_10BPC;
c8203565
PZ		 8209 break;
8210 case 36:
dfd07d72 8211 val |= PIPECONF_12BPC;
c8203565
PZ		 8212 break;
8213 default:
cc769b62
PZ		 8214 /* Case prevented by intel_choose_pipe_bpp_dither. */
8215 BUG();
c8203565
PZ		 8216 }
8217
6e3c9717 8218 if (intel_crtc->config->dither)
c8203565
PZ		 8219 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8220
6e3c9717 8221 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
c8203565
PZ		 8222 val |= PIPECONF_INTERLACED_ILK;
8223 else
8224 val |= PIPECONF_PROGRESSIVE;
8225
6e3c9717 8226 if (intel_crtc->config->limited_color_range)
3685a8f3 8227 val |= PIPECONF_COLOR_RANGE_SELECT;
3685a8f3 8228
c8203565
PZ		 8229 I915_WRITE(PIPECONF(pipe), val);
8230 POSTING_READ(PIPECONF(pipe));
8231}
8232
86d3efce
VS		 8233/*
8234 * Set up the pipe CSC unit.
8235 *
8236 * Currently only full range RGB to limited range RGB conversion
8237 * is supported, but eventually this should handle various
8238 * RGB<->YCbCr scenarios as well.
8239 */
50f3b016 8240static void intel_set_pipe_csc(struct drm_crtc *crtc)
86d3efce
VS		 8241{
8242 struct drm_device *dev = crtc->dev;
8243 struct drm_i915_private *dev_priv = dev->dev_private;
8244 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8245 int pipe = intel_crtc->pipe;
8246 uint16_t coeff = 0x7800; /* 1.0 */
8247
8248 /*
8249 * TODO: Check what kind of values actually come out of the pipe
8250 * with these coeff/postoff values and adjust to get the best
8251 * accuracy. Perhaps we even need to take the bpc value into
8252 * consideration.
8253 */
8254
6e3c9717 8255 if (intel_crtc->config->limited_color_range)
86d3efce
VS		 8256 coeff = ((235 - 16) * (1 << 12) / 255) & 0xff8; /* 0.xxx... */
8257
8258 /*
8259 * GY/GU and RY/RU should be the other way around according
8260 * to BSpec, but reality doesn't agree. Just set them up in
8261 * a way that results in the correct picture.
8262 */
8263 I915_WRITE(PIPE_CSC_COEFF_RY_GY(pipe), coeff << 16);
8264 I915_WRITE(PIPE_CSC_COEFF_BY(pipe), 0);
8265
8266 I915_WRITE(PIPE_CSC_COEFF_RU_GU(pipe), coeff);
8267 I915_WRITE(PIPE_CSC_COEFF_BU(pipe), 0);
8268
8269 I915_WRITE(PIPE_CSC_COEFF_RV_GV(pipe), 0);
8270 I915_WRITE(PIPE_CSC_COEFF_BV(pipe), coeff << 16);
8271
8272 I915_WRITE(PIPE_CSC_PREOFF_HI(pipe), 0);
8273 I915_WRITE(PIPE_CSC_PREOFF_ME(pipe), 0);
8274 I915_WRITE(PIPE_CSC_PREOFF_LO(pipe), 0);
8275
8276 if (INTEL_INFO(dev)->gen > 6) {
8277 uint16_t postoff = 0;
8278
6e3c9717 8279 if (intel_crtc->config->limited_color_range)
32cf0cb0 8280 postoff = (16 * (1 << 12) / 255) & 0x1fff;
86d3efce
VS		 8281
8282 I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), postoff);
8283 I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
8284 I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
8285
8286 I915_WRITE(PIPE_CSC_MODE(pipe), 0);
8287 } else {
8288 uint32_t mode = CSC_MODE_YUV_TO_RGB;
8289
6e3c9717 8290 if (intel_crtc->config->limited_color_range)
86d3efce
VS		 8291 mode |= CSC_BLACK_SCREEN_OFFSET;
8292
8293 I915_WRITE(PIPE_CSC_MODE(pipe), mode);
8294 }
8295}
8296
6ff93609 8297static void haswell_set_pipeconf(struct drm_crtc *crtc)
ee2b0b38 8298{
756f85cf
PZ		 8299 struct drm_device *dev = crtc->dev;
8300 struct drm_i915_private *dev_priv = dev->dev_private;
ee2b0b38 8301 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
756f85cf 8302 enum pipe pipe = intel_crtc->pipe;
6e3c9717 8303 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
ee2b0b38
PZ		 8304 uint32_t val;
8305
3eff4faa 8306 val = 0;
ee2b0b38 8307
6e3c9717 8308 if (IS_HASWELL(dev) && intel_crtc->config->dither)
ee2b0b38
PZ		 8309 val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
8310
6e3c9717 8311 if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
ee2b0b38
PZ		 8312 val |= PIPECONF_INTERLACED_ILK;
8313 else
8314 val |= PIPECONF_PROGRESSIVE;
8315
702e7a56
PZ		 8316 I915_WRITE(PIPECONF(cpu_transcoder), val);
8317 POSTING_READ(PIPECONF(cpu_transcoder));
3eff4faa
DV		 8318
8319 I915_WRITE(GAMMA_MODE(intel_crtc->pipe), GAMMA_MODE_MODE_8BIT);
8320 POSTING_READ(GAMMA_MODE(intel_crtc->pipe));
756f85cf 8321
3cdf122c 8322 if (IS_BROADWELL(dev) || INTEL_INFO(dev)->gen >= 9) {
756f85cf
PZ		 8323 val = 0;
8324
6e3c9717 8325 switch (intel_crtc->config->pipe_bpp) {
756f85cf
PZ		 8326 case 18:
8327 val |= PIPEMISC_DITHER_6_BPC;
8328 break;
8329 case 24:
8330 val |= PIPEMISC_DITHER_8_BPC;
8331 break;
8332 case 30:
8333 val |= PIPEMISC_DITHER_10_BPC;
8334 break;
8335 case 36:
8336 val |= PIPEMISC_DITHER_12_BPC;
8337 break;
8338 default:
8339 /* Case prevented by pipe_config_set_bpp. */
8340 BUG();
8341 }
8342
6e3c9717 8343 if (intel_crtc->config->dither)
756f85cf
PZ		 8344 val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
8345
8346 I915_WRITE(PIPEMISC(pipe), val);
8347 }
ee2b0b38
PZ		 8348}
8349
6591c6e4 8350static bool ironlake_compute_clocks(struct drm_crtc *crtc,
190f68c5 8351 struct intel_crtc_state *crtc_state,
6591c6e4
PZ		 8352 intel_clock_t *clock,
8353 bool *has_reduced_clock,
8354 intel_clock_t *reduced_clock)
8355{
8356 struct drm_device *dev = crtc->dev;
8357 struct drm_i915_private *dev_priv = dev->dev_private;
6591c6e4 8358 int refclk;
d4906093 8359 const intel_limit_t *limit;
a16af721 8360 bool ret, is_lvds = false;
79e53945 8361
a93e255f 8362 is_lvds = intel_pipe_will_have_type(crtc_state, INTEL_OUTPUT_LVDS);
79e53945 8363
55bb9992 8364 refclk = ironlake_get_refclk(crtc_state);
79e53945 8365
d4906093
ML		 8366 /*
8367 * Returns a set of divisors for the desired target clock with the given
8368 * refclk, or FALSE. The returned values represent the clock equation:
8369 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
8370 */
a93e255f
ACO		 8371 limit = intel_limit(crtc_state, refclk);
8372 ret = dev_priv->display.find_dpll(limit, crtc_state,
190f68c5 8373 crtc_state->port_clock,
ee9300bb 8374 refclk, NULL, clock);
6591c6e4
PZ		 8375 if (!ret)
8376 return false;
cda4b7d3 8377
ddc9003c 8378 if (is_lvds && dev_priv->lvds_downclock_avail) {
cec2f356
SP		 8379 /*
8380 * Ensure we match the reduced clock's P to the target clock.
8381 * If the clocks don't match, we can't switch the display clock
8382 * by using the FP0/FP1. In such case we will disable the LVDS
8383 * downclock feature.
8384 */
ee9300bb 8385 *has_reduced_clock =
a93e255f 8386 dev_priv->display.find_dpll(limit, crtc_state,
ee9300bb
DV		 8387 dev_priv->lvds_downclock,
8388 refclk, clock,
8389 reduced_clock);
652c393a 8390 }
61e9653f 8391
6591c6e4
PZ		 8392 return true;
8393}
8394
d4b1931c
PZ		 8395int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
8396{
8397 /*
8398 * Account for spread spectrum to avoid
8399 * oversubscribing the link. Max center spread
8400 * is 2.5%; use 5% for safety's sake.
8401 */
8402 u32 bps = target_clock * bpp * 21 / 20;
619d4d04 8403 return DIV_ROUND_UP(bps, link_bw * 8);
d4b1931c
PZ		 8404}
8405
7429e9d4 8406static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
6cf86a5e 8407{
7429e9d4 8408 return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
f48d8f23
PZ		 8409}
8410
de13a2e3 8411static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
190f68c5 8412 struct intel_crtc_state *crtc_state,
7429e9d4 8413 u32 *fp,
9a7c7890 8414 intel_clock_t *reduced_clock, u32 *fp2)
79e53945 8415{
de13a2e3 8416 struct drm_crtc *crtc = &intel_crtc->base;
79e53945
JB		 8417 struct drm_device *dev = crtc->dev;
8418 struct drm_i915_private *dev_priv = dev->dev_private;
55bb9992 8419 struct drm_atomic_state *state = crtc_state->base.state;
da3ced29 8420 struct drm_connector *connector;
55bb9992
ACO		 8421 struct drm_connector_state *connector_state;
8422 struct intel_encoder *encoder;
de13a2e3 8423 uint32_t dpll;
55bb9992 8424 int factor, num_connectors = 0, i;
09ede541 8425 bool is_lvds = false, is_sdvo = false;
79e53945 8426
da3ced29 8427 for_each_connector_in_state(state, connector, connector_state, i) {
55bb9992
ACO		 8428 if (connector_state->crtc != crtc_state->base.crtc)
8429 continue;
8430
8431 encoder = to_intel_encoder(connector_state->best_encoder);
8432
8433 switch (encoder->type) {
79e53945
JB		 8434 case INTEL_OUTPUT_LVDS:
8435 is_lvds = true;
8436 break;
8437 case INTEL_OUTPUT_SDVO:
7d57382e 8438 case INTEL_OUTPUT_HDMI:
79e53945 8439 is_sdvo = true;
79e53945 8440 break;
6847d71b
PZ		 8441 default:
8442 break;
79e53945 8443 }
43565a06 8444
c751ce4f 8445 num_connectors++;
79e53945 8446 }
79e53945 8447
c1858123 8448 /* Enable autotuning of the PLL clock (if permissible) */
8febb297
EA		 8449 factor = 21;
8450 if (is_lvds) {
8451 if ((intel_panel_use_ssc(dev_priv) &&
e91e941b 8452 dev_priv->vbt.lvds_ssc_freq == 100000) ||
f0b44056 8453 (HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
8febb297 8454 factor = 25;
190f68c5 8455 } else if (crtc_state->sdvo_tv_clock)
8febb297 8456 factor = 20;
c1858123 8457
190f68c5 8458 if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
7d0ac5b7 8459 *fp |= FP_CB_TUNE;
2c07245f 8460
9a7c7890
DV		 8461 if (fp2 && (reduced_clock->m < factor * reduced_clock->n))
8462 *fp2 |= FP_CB_TUNE;
8463
5eddb70b 8464 dpll = 0;
2c07245f 8465
a07d6787
EA		 8466 if (is_lvds)
8467 dpll |= DPLLB_MODE_LVDS;
8468 else
8469 dpll |= DPLLB_MODE_DAC_SERIAL;
198a037f 8470
190f68c5 8471 dpll |= (crtc_state->pixel_multiplier - 1)
ef1b460d 8472 << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
198a037f
DV		 8473
8474 if (is_sdvo)
4a33e48d 8475 dpll |= DPLL_SDVO_HIGH_SPEED;
190f68c5 8476 if (crtc_state->has_dp_encoder)
4a33e48d 8477 dpll |= DPLL_SDVO_HIGH_SPEED;
79e53945 8478
a07d6787 8479 /* compute bitmask from p1 value */
190f68c5 8480 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
a07d6787 8481 /* also FPA1 */
190f68c5 8482 dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
a07d6787 8483
190f68c5 8484 switch (crtc_state->dpll.p2) {
a07d6787
EA		 8485 case 5:
8486 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
8487 break;
8488 case 7:
8489 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
8490 break;
8491 case 10:
8492 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
8493 break;
8494 case 14:
8495 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
8496 break;
79e53945
JB		 8497 }
8498
b4c09f3b 8499 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
43565a06 8500 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
79e53945
JB		 8501 else
8502 dpll |= PLL_REF_INPUT_DREFCLK;
8503
959e16d6 8504 return dpll | DPLL_VCO_ENABLE;
de13a2e3
PZ		 8505}
8506
190f68c5
ACO		 8507static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
8508 struct intel_crtc_state *crtc_state)
de13a2e3 8509{
c7653199 8510 struct drm_device *dev = crtc->base.dev;
de13a2e3 8511 intel_clock_t clock, reduced_clock;
cbbab5bd 8512 u32 dpll = 0, fp = 0, fp2 = 0;
e2f12b07 8513 bool ok, has_reduced_clock = false;
8b47047b 8514 bool is_lvds = false;
e2b78267 8515 struct intel_shared_dpll *pll;
de13a2e3 8516
409ee761 8517 is_lvds = intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS);
79e53945 8518
5dc5298b
PZ		 8519 WARN(!(HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)),
8520 "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev));
a07d6787 8521
190f68c5 8522 ok = ironlake_compute_clocks(&crtc->base, crtc_state, &clock,
de13a2e3 8523 &has_reduced_clock, &reduced_clock);
190f68c5 8524 if (!ok && !crtc_state->clock_set) {
de13a2e3
PZ		 8525 DRM_ERROR("Couldn't find PLL settings for mode!\n");
8526 return -EINVAL;
79e53945 8527 }
f47709a9 8528 /* Compat-code for transition, will disappear. */
190f68c5
ACO		 8529 if (!crtc_state->clock_set) {
8530 crtc_state->dpll.n = clock.n;
8531 crtc_state->dpll.m1 = clock.m1;
8532 crtc_state->dpll.m2 = clock.m2;
8533 crtc_state->dpll.p1 = clock.p1;
8534 crtc_state->dpll.p2 = clock.p2;
f47709a9 8535 }
79e53945 8536
5dc5298b 8537 /* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
190f68c5
ACO		 8538 if (crtc_state->has_pch_encoder) {
8539 fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
cbbab5bd 8540 if (has_reduced_clock)
7429e9d4 8541 fp2 = i9xx_dpll_compute_fp(&reduced_clock);
cbbab5bd 8542
190f68c5 8543 dpll = ironlake_compute_dpll(crtc, crtc_state,
cbbab5bd
DV		 8544 &fp, &reduced_clock,
8545 has_reduced_clock ? &fp2 : NULL);
8546
190f68c5
ACO		 8547 crtc_state->dpll_hw_state.dpll = dpll;
8548 crtc_state->dpll_hw_state.fp0 = fp;
66e985c0 8549 if (has_reduced_clock)
190f68c5 8550 crtc_state->dpll_hw_state.fp1 = fp2;
66e985c0 8551 else
190f68c5 8552 crtc_state->dpll_hw_state.fp1 = fp;
66e985c0 8553
190f68c5 8554 pll = intel_get_shared_dpll(crtc, crtc_state);
ee7b9f93 8555 if (pll == NULL) {
84f44ce7 8556 DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
c7653199 8557 pipe_name(crtc->pipe));
4b645f14
JB		 8558 return -EINVAL;
8559 }
3fb37703 8560 }
79e53945 8561
ab585dea 8562 if (is_lvds && has_reduced_clock)
c7653199 8563 crtc->lowfreq_avail = true;
bcd644e0 8564 else
c7653199 8565 crtc->lowfreq_avail = false;
e2b78267 8566
c8f7a0db 8567 return 0;
79e53945
JB		 8568}
8569
eb14cb74
VS		 8570static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
8571 struct intel_link_m_n *m_n)
8572{
8573 struct drm_device *dev = crtc->base.dev;
8574 struct drm_i915_private *dev_priv = dev->dev_private;
8575 enum pipe pipe = crtc->pipe;
8576
8577 m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
8578 m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
8579 m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
8580 & ~TU_SIZE_MASK;
8581 m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
8582 m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
8583 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8584}
8585
8586static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
8587 enum transcoder transcoder,
b95af8be
VK		 8588 struct intel_link_m_n *m_n,
8589 struct intel_link_m_n *m2_n2)
72419203
DV		 8590{
8591 struct drm_device *dev = crtc->base.dev;
8592 struct drm_i915_private *dev_priv = dev->dev_private;
eb14cb74 8593 enum pipe pipe = crtc->pipe;
72419203 8594
eb14cb74
VS		 8595 if (INTEL_INFO(dev)->gen >= 5) {
8596 m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
8597 m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
8598 m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
8599 & ~TU_SIZE_MASK;
8600 m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
8601 m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
8602 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
b95af8be
VK		 8603 /* Read M2_N2 registers only for gen < 8 (M2_N2 available for
8604 * gen < 8) and if DRRS is supported (to make sure the
8605 * registers are not unnecessarily read).
8606 */
8607 if (m2_n2 && INTEL_INFO(dev)->gen < 8 &&
6e3c9717 8608 crtc->config->has_drrs) {
b95af8be
VK		 8609 m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
8610 m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
8611 m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
8612 & ~TU_SIZE_MASK;
8613 m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
8614 m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
8615 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8616 }
eb14cb74
VS		 8617 } else {
8618 m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
8619 m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
8620 m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
8621 & ~TU_SIZE_MASK;
8622 m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
8623 m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
8624 & TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
8625 }
8626}
8627
8628void intel_dp_get_m_n(struct intel_crtc *crtc,
5cec258b 8629 struct intel_crtc_state *pipe_config)
eb14cb74 8630{
681a8504 8631 if (pipe_config->has_pch_encoder)
eb14cb74
VS		 8632 intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
8633 else
8634 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
b95af8be
VK		 8635 &pipe_config->dp_m_n,
8636 &pipe_config->dp_m2_n2);
eb14cb74 8637}
72419203 8638
eb14cb74 8639static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
5cec258b 8640 struct intel_crtc_state *pipe_config)
eb14cb74
VS		 8641{
8642 intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
b95af8be 8643 &pipe_config->fdi_m_n, NULL);
72419203
DV		 8644}
8645
bd2e244f 8646static void skylake_get_pfit_config(struct intel_crtc *crtc,
5cec258b 8647 struct intel_crtc_state *pipe_config)
bd2e244f
JB		 8648{
8649 struct drm_device *dev = crtc->base.dev;
8650 struct drm_i915_private *dev_priv = dev->dev_private;
a1b2278e
CK		 8651 struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
8652 uint32_t ps_ctrl = 0;
8653 int id = -1;
8654 int i;
bd2e244f 8655
a1b2278e
CK		 8656 /* find scaler attached to this pipe */
8657 for (i = 0; i < crtc->num_scalers; i++) {
8658 ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
8659 if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
8660 id = i;
8661 pipe_config->pch_pfit.enabled = true;
8662 pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
8663 pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
8664 break;
8665 }
8666 }
bd2e244f 8667
a1b2278e
CK		 8668 scaler_state->scaler_id = id;
8669 if (id >= 0) {
8670 scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
8671 } else {
8672 scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
bd2e244f
JB		 8673 }
8674}
8675
5724dbd1
DL		 8676static void
8677skylake_get_initial_plane_config(struct intel_crtc *crtc,
8678 struct intel_initial_plane_config *plane_config)
bc8d7dff
DL		 8679{
8680 struct drm_device *dev = crtc->base.dev;
8681 struct drm_i915_private *dev_priv = dev->dev_private;
40f46283 8682 u32 val, base, offset, stride_mult, tiling;
bc8d7dff
DL		 8683 int pipe = crtc->pipe;
8684 int fourcc, pixel_format;
6761dd31 8685 unsigned int aligned_height;
bc8d7dff 8686 struct drm_framebuffer *fb;
1b842c89 8687 struct intel_framebuffer *intel_fb;
bc8d7dff 8688
d9806c9f 8689 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
1b842c89 8690 if (!intel_fb) {
bc8d7dff
DL		 8691 DRM_DEBUG_KMS("failed to alloc fb\n");
8692 return;
8693 }
8694
1b842c89
DL		 8695 fb = &intel_fb->base;
8696
bc8d7dff 8697 val = I915_READ(PLANE_CTL(pipe, 0));
42a7b088
DL		 8698 if (!(val & PLANE_CTL_ENABLE))
8699 goto error;
8700
bc8d7dff
DL		 8701 pixel_format = val & PLANE_CTL_FORMAT_MASK;
8702 fourcc = skl_format_to_fourcc(pixel_format,
8703 val & PLANE_CTL_ORDER_RGBX,
8704 val & PLANE_CTL_ALPHA_MASK);
8705 fb->pixel_format = fourcc;
8706 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
8707
40f46283
DL		 8708 tiling = val & PLANE_CTL_TILED_MASK;
8709 switch (tiling) {
8710 case PLANE_CTL_TILED_LINEAR:
8711 fb->modifier[0] = DRM_FORMAT_MOD_NONE;
8712 break;
8713 case PLANE_CTL_TILED_X:
8714 plane_config->tiling = I915_TILING_X;
8715 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
8716 break;
8717 case PLANE_CTL_TILED_Y:
8718 fb->modifier[0] = I915_FORMAT_MOD_Y_TILED;
8719 break;
8720 case PLANE_CTL_TILED_YF:
8721 fb->modifier[0] = I915_FORMAT_MOD_Yf_TILED;
8722 break;
8723 default:
8724 MISSING_CASE(tiling);
8725 goto error;
8726 }
8727
bc8d7dff
DL		 8728 base = I915_READ(PLANE_SURF(pipe, 0)) & 0xfffff000;
8729 plane_config->base = base;
8730
8731 offset = I915_READ(PLANE_OFFSET(pipe, 0));
8732
8733 val = I915_READ(PLANE_SIZE(pipe, 0));
8734 fb->height = ((val >> 16) & 0xfff) + 1;
8735 fb->width = ((val >> 0) & 0x1fff) + 1;
8736
8737 val = I915_READ(PLANE_STRIDE(pipe, 0));
40f46283
DL		 8738 stride_mult = intel_fb_stride_alignment(dev, fb->modifier[0],
8739 fb->pixel_format);
bc8d7dff
DL		 8740 fb->pitches[0] = (val & 0x3ff) * stride_mult;
8741
8742 aligned_height = intel_fb_align_height(dev, fb->height,
091df6cb
DV		 8743 fb->pixel_format,
8744 fb->modifier[0]);
bc8d7dff 8745
f37b5c2b 8746 plane_config->size = fb->pitches[0] * aligned_height;
bc8d7dff
DL		 8747
8748 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
8749 pipe_name(pipe), fb->width, fb->height,
8750 fb->bits_per_pixel, base, fb->pitches[0],
8751 plane_config->size);
8752
2d14030b 8753 plane_config->fb = intel_fb;
bc8d7dff
DL		 8754 return;
8755
8756error:
8757 kfree(fb);
8758}
8759
2fa2fe9a 8760static void ironlake_get_pfit_config(struct intel_crtc *crtc,
5cec258b 8761 struct intel_crtc_state *pipe_config)
2fa2fe9a
DV		 8762{
8763 struct drm_device *dev = crtc->base.dev;
8764 struct drm_i915_private *dev_priv = dev->dev_private;
8765 uint32_t tmp;
8766
8767 tmp = I915_READ(PF_CTL(crtc->pipe));
8768
8769 if (tmp & PF_ENABLE) {
fd4daa9c 8770 pipe_config->pch_pfit.enabled = true;
2fa2fe9a
DV		 8771 pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
8772 pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
cb8b2a30
DV		 8773
8774 /* We currently do not free assignements of panel fitters on
8775 * ivb/hsw (since we don't use the higher upscaling modes which
8776 * differentiates them) so just WARN about this case for now. */
8777 if (IS_GEN7(dev)) {
8778 WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
8779 PF_PIPE_SEL_IVB(crtc->pipe));
8780 }
2fa2fe9a 8781 }
79e53945
JB		 8782}
8783
5724dbd1
DL		 8784static void
8785ironlake_get_initial_plane_config(struct intel_crtc *crtc,
8786 struct intel_initial_plane_config *plane_config)
4c6baa59
JB		 8787{
8788 struct drm_device *dev = crtc->base.dev;
8789 struct drm_i915_private *dev_priv = dev->dev_private;
8790 u32 val, base, offset;
aeee5a49 8791 int pipe = crtc->pipe;
4c6baa59 8792 int fourcc, pixel_format;
6761dd31 8793 unsigned int aligned_height;
b113d5ee 8794 struct drm_framebuffer *fb;
1b842c89 8795 struct intel_framebuffer *intel_fb;
4c6baa59 8796
42a7b088
DL		 8797 val = I915_READ(DSPCNTR(pipe));
8798 if (!(val & DISPLAY_PLANE_ENABLE))
8799 return;
8800
d9806c9f 8801 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
1b842c89 8802 if (!intel_fb) {
4c6baa59
JB		 8803 DRM_DEBUG_KMS("failed to alloc fb\n");
8804 return;
8805 }
8806
1b842c89
DL		 8807 fb = &intel_fb->base;
8808
18c5247e
DV		 8809 if (INTEL_INFO(dev)->gen >= 4) {
8810 if (val & DISPPLANE_TILED) {
49af449b 8811 plane_config->tiling = I915_TILING_X;
18c5247e
DV		 8812 fb->modifier[0] = I915_FORMAT_MOD_X_TILED;
8813 }
8814 }
4c6baa59
JB		 8815
8816 pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
b35d63fa 8817 fourcc = i9xx_format_to_fourcc(pixel_format);
b113d5ee
DL		 8818 fb->pixel_format = fourcc;
8819 fb->bits_per_pixel = drm_format_plane_cpp(fourcc, 0) * 8;
4c6baa59 8820
aeee5a49 8821 base = I915_READ(DSPSURF(pipe)) & 0xfffff000;
4c6baa59 8822 if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
aeee5a49 8823 offset = I915_READ(DSPOFFSET(pipe));
4c6baa59 8824 } else {
49af449b 8825 if (plane_config->tiling)
aeee5a49 8826 offset = I915_READ(DSPTILEOFF(pipe));
4c6baa59 8827 else
aeee5a49 8828 offset = I915_READ(DSPLINOFF(pipe));
4c6baa59
JB		 8829 }
8830 plane_config->base = base;
8831
8832 val = I915_READ(PIPESRC(pipe));
b113d5ee
DL		 8833 fb->width = ((val >> 16) & 0xfff) + 1;
8834 fb->height = ((val >> 0) & 0xfff) + 1;
4c6baa59
JB		 8835
8836 val = I915_READ(DSPSTRIDE(pipe));
b113d5ee 8837 fb->pitches[0] = val & 0xffffffc0;
4c6baa59 8838
b113d5ee 8839 aligned_height = intel_fb_align_height(dev, fb->height,
091df6cb
DV		 8840 fb->pixel_format,
8841 fb->modifier[0]);
4c6baa59 8842
f37b5c2b 8843 plane_config->size = fb->pitches[0] * aligned_height;
4c6baa59 8844
2844a921
DL		 8845 DRM_DEBUG_KMS("pipe %c with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
8846 pipe_name(pipe), fb->width, fb->height,
8847 fb->bits_per_pixel, base, fb->pitches[0],
8848 plane_config->size);
b113d5ee 8849
2d14030b 8850 plane_config->fb = intel_fb;
4c6baa59
JB		 8851}
8852
0e8ffe1b 8853static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
5cec258b 8854 struct intel_crtc_state *pipe_config)
0e8ffe1b
DV		 8855{
8856 struct drm_device *dev = crtc->base.dev;
8857 struct drm_i915_private *dev_priv = dev->dev_private;
8858 uint32_t tmp;
8859
f458ebbc
DV		 8860 if (!intel_display_power_is_enabled(dev_priv,
8861 POWER_DOMAIN_PIPE(crtc->pipe)))
930e8c9e
PZ		 8862 return false;
8863
e143a21c 8864 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
c0d43d62 8865 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
eccb140b 8866
0e8ffe1b
DV		 8867 tmp = I915_READ(PIPECONF(crtc->pipe));
8868 if (!(tmp & PIPECONF_ENABLE))
8869 return false;
8870
42571aef
VS		 8871 switch (tmp & PIPECONF_BPC_MASK) {
8872 case PIPECONF_6BPC:
8873 pipe_config->pipe_bpp = 18;
8874 break;
8875 case PIPECONF_8BPC:
8876 pipe_config->pipe_bpp = 24;
8877 break;
8878 case PIPECONF_10BPC:
8879 pipe_config->pipe_bpp = 30;
8880 break;
8881 case PIPECONF_12BPC:
8882 pipe_config->pipe_bpp = 36;
8883 break;
8884 default:
8885 break;
8886 }
8887
b5a9fa09
DV		 8888 if (tmp & PIPECONF_COLOR_RANGE_SELECT)
8889 pipe_config->limited_color_range = true;
8890
ab9412ba 8891 if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
66e985c0
DV		 8892 struct intel_shared_dpll *pll;
8893
88adfff1
DV		 8894 pipe_config->has_pch_encoder = true;
8895
627eb5a3
DV		 8896 tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
8897 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
8898 FDI_DP_PORT_WIDTH_SHIFT) + 1;
72419203
DV		 8899
8900 ironlake_get_fdi_m_n_config(crtc, pipe_config);
6c49f241 8901
c0d43d62 8902 if (HAS_PCH_IBX(dev_priv->dev)) {
d94ab068
DV		 8903 pipe_config->shared_dpll =
8904 (enum intel_dpll_id) crtc->pipe;
c0d43d62
DV		 8905 } else {
8906 tmp = I915_READ(PCH_DPLL_SEL);
8907 if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
8908 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_B;
8909 else
8910 pipe_config->shared_dpll = DPLL_ID_PCH_PLL_A;
8911 }
66e985c0
DV		 8912
8913 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
8914
8915 WARN_ON(!pll->get_hw_state(dev_priv, pll,
8916 &pipe_config->dpll_hw_state));
c93f54cf
DV		 8917
8918 tmp = pipe_config->dpll_hw_state.dpll;
8919 pipe_config->pixel_multiplier =
8920 ((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
8921 >> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
18442d08
VS		 8922
8923 ironlake_pch_clock_get(crtc, pipe_config);
6c49f241
DV		 8924 } else {
8925 pipe_config->pixel_multiplier = 1;
627eb5a3
DV		 8926 }
8927
1bd1bd80
DV		 8928 intel_get_pipe_timings(crtc, pipe_config);
8929
2fa2fe9a
DV		 8930 ironlake_get_pfit_config(crtc, pipe_config);
8931
0e8ffe1b
DV		 8932 return true;
8933}
8934
be256dc7
PZ		 8935static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
8936{
8937 struct drm_device *dev = dev_priv->dev;
be256dc7 8938 struct intel_crtc *crtc;
be256dc7 8939
d3fcc808 8940 for_each_intel_crtc(dev, crtc)
e2c719b7 8941 I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
be256dc7
PZ		 8942 pipe_name(crtc->pipe));
8943
e2c719b7
RC		 8944 I915_STATE_WARN(I915_READ(HSW_PWR_WELL_DRIVER), "Power well on\n");
8945 I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE, "SPLL enabled\n");
8946 I915_STATE_WARN(I915_READ(WRPLL_CTL1) & WRPLL_PLL_ENABLE, "WRPLL1 enabled\n");
8947 I915_STATE_WARN(I915_READ(WRPLL_CTL2) & WRPLL_PLL_ENABLE, "WRPLL2 enabled\n");
8948 I915_STATE_WARN(I915_READ(PCH_PP_STATUS) & PP_ON, "Panel power on\n");
8949 I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
be256dc7 8950 "CPU PWM1 enabled\n");
c5107b87 8951 if (IS_HASWELL(dev))
e2c719b7 8952 I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
c5107b87 8953 "CPU PWM2 enabled\n");
e2c719b7 8954 I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
be256dc7 8955 "PCH PWM1 enabled\n");
e2c719b7 8956 I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
be256dc7 8957 "Utility pin enabled\n");
e2c719b7 8958 I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE, "PCH GTC enabled\n");
be256dc7 8959
9926ada1
PZ		 8960 /*
8961 * In theory we can still leave IRQs enabled, as long as only the HPD
8962 * interrupts remain enabled. We used to check for that, but since it's
8963 * gen-specific and since we only disable LCPLL after we fully disable
8964 * the interrupts, the check below should be enough.
8965 */
e2c719b7 8966 I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
be256dc7
PZ		 8967}
8968
9ccd5aeb
PZ		 8969static uint32_t hsw_read_dcomp(struct drm_i915_private *dev_priv)
8970{
8971 struct drm_device *dev = dev_priv->dev;
8972
8973 if (IS_HASWELL(dev))
8974 return I915_READ(D_COMP_HSW);
8975 else
8976 return I915_READ(D_COMP_BDW);
8977}
8978
3c4c9b81
PZ		 8979static void hsw_write_dcomp(struct drm_i915_private *dev_priv, uint32_t val)
8980{
8981 struct drm_device *dev = dev_priv->dev;
8982
8983 if (IS_HASWELL(dev)) {
8984 mutex_lock(&dev_priv->rps.hw_lock);
8985 if (sandybridge_pcode_write(dev_priv, GEN6_PCODE_WRITE_D_COMP,
8986 val))
f475dadf 8987 DRM_ERROR("Failed to write to D_COMP\n");
3c4c9b81
PZ		 8988 mutex_unlock(&dev_priv->rps.hw_lock);
8989 } else {
9ccd5aeb
PZ		 8990 I915_WRITE(D_COMP_BDW, val);
8991 POSTING_READ(D_COMP_BDW);
3c4c9b81 8992 }
be256dc7
PZ		 8993}
8994
8995/*
8996 * This function implements pieces of two sequences from BSpec:
8997 * - Sequence for display software to disable LCPLL
8998 * - Sequence for display software to allow package C8+
8999 * The steps implemented here are just the steps that actually touch the LCPLL
9000 * register. Callers should take care of disabling all the display engine
9001 * functions, doing the mode unset, fixing interrupts, etc.
9002 */
6ff58d53
PZ		 9003static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
9004 bool switch_to_fclk, bool allow_power_down)
be256dc7
PZ		 9005{
9006 uint32_t val;
9007
9008 assert_can_disable_lcpll(dev_priv);
9009
9010 val = I915_READ(LCPLL_CTL);
9011
9012 if (switch_to_fclk) {
9013 val |= LCPLL_CD_SOURCE_FCLK;
9014 I915_WRITE(LCPLL_CTL, val);
9015
9016 if (wait_for_atomic_us(I915_READ(LCPLL_CTL) &
9017 LCPLL_CD_SOURCE_FCLK_DONE, 1))
9018 DRM_ERROR("Switching to FCLK failed\n");
9019
9020 val = I915_READ(LCPLL_CTL);
9021 }
9022
9023 val |= LCPLL_PLL_DISABLE;
9024 I915_WRITE(LCPLL_CTL, val);
9025 POSTING_READ(LCPLL_CTL);
9026
9027 if (wait_for((I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK) == 0, 1))
9028 DRM_ERROR("LCPLL still locked\n");
9029
9ccd5aeb 9030 val = hsw_read_dcomp(dev_priv);
be256dc7 9031 val |= D_COMP_COMP_DISABLE;
3c4c9b81 9032 hsw_write_dcomp(dev_priv, val);
be256dc7
PZ		 9033 ndelay(100);
9034
9ccd5aeb
PZ		 9035 if (wait_for((hsw_read_dcomp(dev_priv) & D_COMP_RCOMP_IN_PROGRESS) == 0,
9036 1))
be256dc7
PZ		 9037 DRM_ERROR("D_COMP RCOMP still in progress\n");
9038
9039 if (allow_power_down) {
9040 val = I915_READ(LCPLL_CTL);
9041 val |= LCPLL_POWER_DOWN_ALLOW;
9042 I915_WRITE(LCPLL_CTL, val);
9043 POSTING_READ(LCPLL_CTL);
9044 }
9045}
9046
9047/*
9048 * Fully restores LCPLL, disallowing power down and switching back to LCPLL
9049 * source.
9050 */
6ff58d53 9051static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
be256dc7
PZ		 9052{
9053 uint32_t val;
9054
9055 val = I915_READ(LCPLL_CTL);
9056
9057 if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
9058 LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
9059 return;
9060
a8a8bd54
PZ		 9061 /*
9062 * Make sure we're not on PC8 state before disabling PC8, otherwise
9063 * we'll hang the machine. To prevent PC8 state, just enable force_wake.
a8a8bd54 9064 */
59bad947 9065 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
215733fa 9066
be256dc7
PZ		 9067 if (val & LCPLL_POWER_DOWN_ALLOW) {
9068 val &= ~LCPLL_POWER_DOWN_ALLOW;
9069 I915_WRITE(LCPLL_CTL, val);
35d8f2eb 9070 POSTING_READ(LCPLL_CTL);
be256dc7
PZ		 9071 }
9072
9ccd5aeb 9073 val = hsw_read_dcomp(dev_priv);
be256dc7
PZ		 9074 val |= D_COMP_COMP_FORCE;
9075 val &= ~D_COMP_COMP_DISABLE;
3c4c9b81 9076 hsw_write_dcomp(dev_priv, val);
be256dc7
PZ		 9077
9078 val = I915_READ(LCPLL_CTL);
9079 val &= ~LCPLL_PLL_DISABLE;
9080 I915_WRITE(LCPLL_CTL, val);
9081
9082 if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
9083 DRM_ERROR("LCPLL not locked yet\n");
9084
9085 if (val & LCPLL_CD_SOURCE_FCLK) {
9086 val = I915_READ(LCPLL_CTL);
9087 val &= ~LCPLL_CD_SOURCE_FCLK;
9088 I915_WRITE(LCPLL_CTL, val);
9089
9090 if (wait_for_atomic_us((I915_READ(LCPLL_CTL) &
9091 LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
9092 DRM_ERROR("Switching back to LCPLL failed\n");
9093 }
215733fa 9094
59bad947 9095 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
be256dc7
PZ		 9096}
9097
765dab67
PZ		 9098/*
9099 * Package states C8 and deeper are really deep PC states that can only be
9100 * reached when all the devices on the system allow it, so even if the graphics
9101 * device allows PC8+, it doesn't mean the system will actually get to these
9102 * states. Our driver only allows PC8+ when going into runtime PM.
9103 *
9104 * The requirements for PC8+ are that all the outputs are disabled, the power
9105 * well is disabled and most interrupts are disabled, and these are also
9106 * requirements for runtime PM. When these conditions are met, we manually do
9107 * the other conditions: disable the interrupts, clocks and switch LCPLL refclk
9108 * to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
9109 * hang the machine.
9110 *
9111 * When we really reach PC8 or deeper states (not just when we allow it) we lose
9112 * the state of some registers, so when we come back from PC8+ we need to
9113 * restore this state. We don't get into PC8+ if we're not in RC6, so we don't
9114 * need to take care of the registers kept by RC6. Notice that this happens even
9115 * if we don't put the device in PCI D3 state (which is what currently happens
9116 * because of the runtime PM support).
9117 *
9118 * For more, read "Display Sequences for Package C8" on the hardware
9119 * documentation.
9120 */
a14cb6fc 9121void hsw_enable_pc8(struct drm_i915_private *dev_priv)
c67a470b 9122{
c67a470b
PZ		 9123 struct drm_device *dev = dev_priv->dev;
9124 uint32_t val;
9125
c67a470b
PZ		 9126 DRM_DEBUG_KMS("Enabling package C8+\n");
9127
c67a470b
PZ		 9128 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
9129 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9130 val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
9131 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9132 }
9133
9134 lpt_disable_clkout_dp(dev);
c67a470b
PZ		 9135 hsw_disable_lcpll(dev_priv, true, true);
9136}
9137
a14cb6fc 9138void hsw_disable_pc8(struct drm_i915_private *dev_priv)
c67a470b
PZ		 9139{
9140 struct drm_device *dev = dev_priv->dev;
9141 uint32_t val;
9142
c67a470b
PZ		 9143 DRM_DEBUG_KMS("Disabling package C8+\n");
9144
9145 hsw_restore_lcpll(dev_priv);
c67a470b
PZ		 9146 lpt_init_pch_refclk(dev);
9147
9148 if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
9149 val = I915_READ(SOUTH_DSPCLK_GATE_D);
9150 val |= PCH_LP_PARTITION_LEVEL_DISABLE;
9151 I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
9152 }
9153
9154 intel_prepare_ddi(dev);
c67a470b
PZ		 9155}
9156
f8437dd1
VK		 9157static void broxton_modeset_global_resources(struct drm_atomic_state *state)
9158{
9159 struct drm_device *dev = state->dev;
9160 struct drm_i915_private *dev_priv = dev->dev_private;
9161 int max_pixclk = intel_mode_max_pixclk(state);
9162 int req_cdclk;
9163
9164 /* see the comment in valleyview_modeset_global_resources */
9165 if (WARN_ON(max_pixclk < 0))
9166 return;
9167
9168 req_cdclk = broxton_calc_cdclk(dev_priv, max_pixclk);
9169
9170 if (req_cdclk != dev_priv->cdclk_freq)
9171 broxton_set_cdclk(dev, req_cdclk);
9172}
9173
190f68c5
ACO		 9174static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
9175 struct intel_crtc_state *crtc_state)
09b4ddf9 9176{
190f68c5 9177 if (!intel_ddi_pll_select(crtc, crtc_state))
6441ab5f 9178 return -EINVAL;
716c2e55 9179
c7653199 9180 crtc->lowfreq_avail = false;
644cef34 9181
c8f7a0db 9182 return 0;
79e53945
JB		 9183}
9184
3760b59c
S		 9185static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
9186 enum port port,
9187 struct intel_crtc_state *pipe_config)
9188{
9189 switch (port) {
9190 case PORT_A:
9191 pipe_config->ddi_pll_sel = SKL_DPLL0;
9192 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9193 break;
9194 case PORT_B:
9195 pipe_config->ddi_pll_sel = SKL_DPLL1;
9196 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9197 break;
9198 case PORT_C:
9199 pipe_config->ddi_pll_sel = SKL_DPLL2;
9200 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9201 break;
9202 default:
9203 DRM_ERROR("Incorrect port type\n");
9204 }
9205}
9206
96b7dfb7
S		 9207static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
9208 enum port port,
5cec258b 9209 struct intel_crtc_state *pipe_config)
96b7dfb7 9210{
3148ade7 9211 u32 temp, dpll_ctl1;
96b7dfb7
S		 9212
9213 temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
9214 pipe_config->ddi_pll_sel = temp >> (port * 3 + 1);
9215
9216 switch (pipe_config->ddi_pll_sel) {
3148ade7
DL		 9217 case SKL_DPLL0:
9218 /*
9219 * On SKL the eDP DPLL (DPLL0 as we don't use SSC) is not part
9220 * of the shared DPLL framework and thus needs to be read out
9221 * separately
9222 */
9223 dpll_ctl1 = I915_READ(DPLL_CTRL1);
9224 pipe_config->dpll_hw_state.ctrl1 = dpll_ctl1 & 0x3f;
9225 break;
96b7dfb7
S		 9226 case SKL_DPLL1:
9227 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL1;
9228 break;
9229 case SKL_DPLL2:
9230 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL2;
9231 break;
9232 case SKL_DPLL3:
9233 pipe_config->shared_dpll = DPLL_ID_SKL_DPLL3;
9234 break;
96b7dfb7
S		 9235 }
9236}
9237
7d2c8175
DL		 9238static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
9239 enum port port,
5cec258b 9240 struct intel_crtc_state *pipe_config)
7d2c8175
DL		 9241{
9242 pipe_config->ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
9243
9244 switch (pipe_config->ddi_pll_sel) {
9245 case PORT_CLK_SEL_WRPLL1:
9246 pipe_config->shared_dpll = DPLL_ID_WRPLL1;
9247 break;
9248 case PORT_CLK_SEL_WRPLL2:
9249 pipe_config->shared_dpll = DPLL_ID_WRPLL2;
9250 break;
9251 }
9252}
9253
26804afd 9254static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
5cec258b 9255 struct intel_crtc_state *pipe_config)
26804afd
DV		 9256{
9257 struct drm_device *dev = crtc->base.dev;
9258 struct drm_i915_private *dev_priv = dev->dev_private;
d452c5b6 9259 struct intel_shared_dpll *pll;
26804afd
DV		 9260 enum port port;
9261 uint32_t tmp;
9262
9263 tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
9264
9265 port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
9266
96b7dfb7
S		 9267 if (IS_SKYLAKE(dev))
9268 skylake_get_ddi_pll(dev_priv, port, pipe_config);
3760b59c
S		 9269 else if (IS_BROXTON(dev))
9270 bxt_get_ddi_pll(dev_priv, port, pipe_config);
96b7dfb7
S		 9271 else
9272 haswell_get_ddi_pll(dev_priv, port, pipe_config);
9cd86933 9273
d452c5b6
DV		 9274 if (pipe_config->shared_dpll >= 0) {
9275 pll = &dev_priv->shared_dplls[pipe_config->shared_dpll];
9276
9277 WARN_ON(!pll->get_hw_state(dev_priv, pll,
9278 &pipe_config->dpll_hw_state));
9279 }
9280
26804afd
DV		 9281 /*
9282 * Haswell has only FDI/PCH transcoder A. It is which is connected to
9283 * DDI E. So just check whether this pipe is wired to DDI E and whether
9284 * the PCH transcoder is on.
9285 */
ca370455
DL		 9286 if (INTEL_INFO(dev)->gen < 9 &&
9287 (port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
26804afd
DV		 9288 pipe_config->has_pch_encoder = true;
9289
9290 tmp = I915_READ(FDI_RX_CTL(PIPE_A));
9291 pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
9292 FDI_DP_PORT_WIDTH_SHIFT) + 1;
9293
9294 ironlake_get_fdi_m_n_config(crtc, pipe_config);
9295 }
9296}
9297
0e8ffe1b 9298static bool haswell_get_pipe_config(struct intel_crtc *crtc,
5cec258b 9299 struct intel_crtc_state *pipe_config)
0e8ffe1b
DV		 9300{
9301 struct drm_device *dev = crtc->base.dev;
9302 struct drm_i915_private *dev_priv = dev->dev_private;
2fa2fe9a 9303 enum intel_display_power_domain pfit_domain;
0e8ffe1b
DV		 9304 uint32_t tmp;
9305
f458ebbc 9306 if (!intel_display_power_is_enabled(dev_priv,
b5482bd0
ID		 9307 POWER_DOMAIN_PIPE(crtc->pipe)))
9308 return false;
9309
e143a21c 9310 pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
c0d43d62
DV		 9311 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
9312
eccb140b
DV		 9313 tmp = I915_READ(TRANS_DDI_FUNC_CTL(TRANSCODER_EDP));
9314 if (tmp & TRANS_DDI_FUNC_ENABLE) {
9315 enum pipe trans_edp_pipe;
9316 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
9317 default:
9318 WARN(1, "unknown pipe linked to edp transcoder\n");
9319 case TRANS_DDI_EDP_INPUT_A_ONOFF:
9320 case TRANS_DDI_EDP_INPUT_A_ON:
9321 trans_edp_pipe = PIPE_A;
9322 break;
9323 case TRANS_DDI_EDP_INPUT_B_ONOFF:
9324 trans_edp_pipe = PIPE_B;
9325 break;
9326 case TRANS_DDI_EDP_INPUT_C_ONOFF:
9327 trans_edp_pipe = PIPE_C;
9328 break;
9329 }
9330
9331 if (trans_edp_pipe == crtc->pipe)
9332 pipe_config->cpu_transcoder = TRANSCODER_EDP;
9333 }
9334
f458ebbc 9335 if (!intel_display_power_is_enabled(dev_priv,
eccb140b 9336 POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder)))
2bfce950
PZ		 9337 return false;
9338
eccb140b 9339 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
0e8ffe1b
DV		 9340 if (!(tmp & PIPECONF_ENABLE))
9341 return false;
9342
26804afd 9343 haswell_get_ddi_port_state(crtc, pipe_config);
627eb5a3 9344
1bd1bd80
DV		 9345 intel_get_pipe_timings(crtc, pipe_config);
9346
a1b2278e
CK		 9347 if (INTEL_INFO(dev)->gen >= 9) {
9348 skl_init_scalers(dev, crtc, pipe_config);
9349 }
9350
2fa2fe9a 9351 pfit_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
bd2e244f 9352 if (intel_display_power_is_enabled(dev_priv, pfit_domain)) {
ff6d9f55 9353 if (INTEL_INFO(dev)->gen == 9)
bd2e244f 9354 skylake_get_pfit_config(crtc, pipe_config);
ff6d9f55 9355 else if (INTEL_INFO(dev)->gen < 9)
bd2e244f 9356 ironlake_get_pfit_config(crtc, pipe_config);
ff6d9f55
JB		 9357 else
9358 MISSING_CASE(INTEL_INFO(dev)->gen);
9359
a1b2278e
CK		 9360 } else {
9361 pipe_config->scaler_state.scaler_id = -1;
9362 pipe_config->scaler_state.scaler_users &= ~(1 << SKL_CRTC_INDEX);
bd2e244f 9363 }
88adfff1 9364
e59150dc
JB		 9365 if (IS_HASWELL(dev))
9366 pipe_config->ips_enabled = hsw_crtc_supports_ips(crtc) &&
9367 (I915_READ(IPS_CTL) & IPS_ENABLE);
42db64ef 9368
ebb69c95
CT		 9369 if (pipe_config->cpu_transcoder != TRANSCODER_EDP) {
9370 pipe_config->pixel_multiplier =
9371 I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
9372 } else {
9373 pipe_config->pixel_multiplier = 1;
9374 }
6c49f241 9375
0e8ffe1b
DV		 9376 return true;
9377}
9378
560b85bb
CW		 9379static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
9380{
9381 struct drm_device *dev = crtc->dev;
9382 struct drm_i915_private *dev_priv = dev->dev_private;
9383 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
dc41c154 9384 uint32_t cntl = 0, size = 0;
560b85bb 9385
dc41c154 9386 if (base) {
3dd512fb
MR		 9387 unsigned int width = intel_crtc->base.cursor->state->crtc_w;
9388 unsigned int height = intel_crtc->base.cursor->state->crtc_h;
dc41c154
VS		 9389 unsigned int stride = roundup_pow_of_two(width) * 4;
9390
9391 switch (stride) {
9392 default:
9393 WARN_ONCE(1, "Invalid cursor width/stride, width=%u, stride=%u\n",
9394 width, stride);
9395 stride = 256;
9396 /* fallthrough */
9397 case 256:
9398 case 512:
9399 case 1024:
9400 case 2048:
9401 break;
4b0e333e
CW		 9402 }
9403
dc41c154
VS		 9404 cntl |= CURSOR_ENABLE |
9405 CURSOR_GAMMA_ENABLE |
9406 CURSOR_FORMAT_ARGB |
9407 CURSOR_STRIDE(stride);
9408
9409 size = (height << 12) | width;
4b0e333e 9410 }
560b85bb 9411
dc41c154
VS		 9412 if (intel_crtc->cursor_cntl != 0 &&
9413 (intel_crtc->cursor_base != base ||
9414 intel_crtc->cursor_size != size ||
9415 intel_crtc->cursor_cntl != cntl)) {
9416 /* On these chipsets we can only modify the base/size/stride
9417 * whilst the cursor is disabled.
9418 */
9419 I915_WRITE(_CURACNTR, 0);
4b0e333e 9420 POSTING_READ(_CURACNTR);
dc41c154 9421 intel_crtc->cursor_cntl = 0;
4b0e333e 9422 }
560b85bb 9423
99d1f387 9424 if (intel_crtc->cursor_base != base) {
9db4a9c7 9425 I915_WRITE(_CURABASE, base);
99d1f387
VS		 9426 intel_crtc->cursor_base = base;
9427 }
4726e0b0 9428
dc41c154
VS		 9429 if (intel_crtc->cursor_size != size) {
9430 I915_WRITE(CURSIZE, size);
9431 intel_crtc->cursor_size = size;
4b0e333e 9432 }
560b85bb 9433
4b0e333e 9434 if (intel_crtc->cursor_cntl != cntl) {
4b0e333e
CW		 9435 I915_WRITE(_CURACNTR, cntl);
9436 POSTING_READ(_CURACNTR);
4b0e333e 9437 intel_crtc->cursor_cntl = cntl;
560b85bb 9438 }
560b85bb
CW		 9439}
9440
560b85bb 9441static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
65a21cd6
JB		 9442{
9443 struct drm_device *dev = crtc->dev;
9444 struct drm_i915_private *dev_priv = dev->dev_private;
9445 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9446 int pipe = intel_crtc->pipe;
4b0e333e
CW		 9447 uint32_t cntl;
9448
9449 cntl = 0;
9450 if (base) {
9451 cntl = MCURSOR_GAMMA_ENABLE;
3dd512fb 9452 switch (intel_crtc->base.cursor->state->crtc_w) {
4726e0b0
SK		 9453 case 64:
9454 cntl |= CURSOR_MODE_64_ARGB_AX;
9455 break;
9456 case 128:
9457 cntl |= CURSOR_MODE_128_ARGB_AX;
9458 break;
9459 case 256:
9460 cntl |= CURSOR_MODE_256_ARGB_AX;
9461 break;
9462 default:
3dd512fb 9463 MISSING_CASE(intel_crtc->base.cursor->state->crtc_w);
4726e0b0 9464 return;
65a21cd6 9465 }
4b0e333e 9466 cntl |= pipe << 28; /* Connect to correct pipe */
47bf17a7
VS		 9467
9468 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
9469 cntl |= CURSOR_PIPE_CSC_ENABLE;
4b0e333e 9470 }
65a21cd6 9471
8e7d688b 9472 if (crtc->cursor->state->rotation == BIT(DRM_ROTATE_180))
4398ad45
VS		 9473 cntl |= CURSOR_ROTATE_180;
9474
4b0e333e
CW		 9475 if (intel_crtc->cursor_cntl != cntl) {
9476 I915_WRITE(CURCNTR(pipe), cntl);
9477 POSTING_READ(CURCNTR(pipe));
9478 intel_crtc->cursor_cntl = cntl;
65a21cd6 9479 }
4b0e333e 9480
65a21cd6 9481 /* and commit changes on next vblank */
5efb3e28
VS		 9482 I915_WRITE(CURBASE(pipe), base);
9483 POSTING_READ(CURBASE(pipe));
99d1f387
VS		 9484
9485 intel_crtc->cursor_base = base;
65a21cd6
JB		 9486}
9487
cda4b7d3 9488/* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
6b383a7f
CW		 9489static void intel_crtc_update_cursor(struct drm_crtc *crtc,
9490 bool on)
cda4b7d3
CW		 9491{
9492 struct drm_device *dev = crtc->dev;
9493 struct drm_i915_private *dev_priv = dev->dev_private;
9494 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
9495 int pipe = intel_crtc->pipe;
3d7d6510
MR		 9496 int x = crtc->cursor_x;
9497 int y = crtc->cursor_y;
d6e4db15 9498 u32 base = 0, pos = 0;
cda4b7d3 9499
d6e4db15 9500 if (on)
cda4b7d3 9501 base = intel_crtc->cursor_addr;
cda4b7d3 9502
6e3c9717 9503 if (x >= intel_crtc->config->pipe_src_w)
d6e4db15
VS		 9504 base = 0;
9505
6e3c9717 9506 if (y >= intel_crtc->config->pipe_src_h)
cda4b7d3
CW		 9507 base = 0;
9508
9509 if (x < 0) {
3dd512fb 9510 if (x + intel_crtc->base.cursor->state->crtc_w <= 0)
cda4b7d3
CW		 9511 base = 0;
9512
9513 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
9514 x = -x;
9515 }
9516 pos |= x << CURSOR_X_SHIFT;
9517
9518 if (y < 0) {
3dd512fb 9519 if (y + intel_crtc->base.cursor->state->crtc_h <= 0)
cda4b7d3
CW		 9520 base = 0;
9521
9522 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
9523 y = -y;
9524 }
9525 pos |= y << CURSOR_Y_SHIFT;
9526
4b0e333e 9527 if (base == 0 && intel_crtc->cursor_base == 0)
cda4b7d3
CW		 9528 return;
9529
5efb3e28
VS		 9530 I915_WRITE(CURPOS(pipe), pos);
9531
4398ad45
VS		 9532 /* ILK+ do this automagically */
9533 if (HAS_GMCH_DISPLAY(dev) &&
8e7d688b 9534 crtc->cursor->state->rotation == BIT(DRM_ROTATE_180)) {
3dd512fb
MR		 9535 base += (intel_crtc->base.cursor->state->crtc_h *
9536 intel_crtc->base.cursor->state->crtc_w - 1) * 4;
4398ad45
VS		 9537 }
9538
8ac54669 9539 if (IS_845G(dev) || IS_I865G(dev))
5efb3e28
VS		 9540 i845_update_cursor(crtc, base);
9541 else
9542 i9xx_update_cursor(crtc, base);
cda4b7d3
CW		 9543}
9544
dc41c154
VS		 9545static bool cursor_size_ok(struct drm_device *dev,
9546 uint32_t width, uint32_t height)
9547{
9548 if (width == 0 || height == 0)
9549 return false;
9550
9551 /*
9552 * 845g/865g are special in that they are only limited by
9553 * the width of their cursors, the height is arbitrary up to
9554 * the precision of the register. Everything else requires
9555 * square cursors, limited to a few power-of-two sizes.
9556 */
9557 if (IS_845G(dev) || IS_I865G(dev)) {
9558 if ((width & 63) != 0)
9559 return false;
9560
9561 if (width > (IS_845G(dev) ? 64 : 512))
9562 return false;
9563
9564 if (height > 1023)
9565 return false;
9566 } else {
9567 switch (width | height) {
9568 case 256:
9569 case 128:
9570 if (IS_GEN2(dev))
9571 return false;
9572 case 64:
9573 break;
9574 default:
9575 return false;
9576 }
9577 }
9578
9579 return true;
9580}
9581
79e53945 9582static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
7203425a 9583 u16 *blue, uint32_t start, uint32_t size)
79e53945 9584{
7203425a 9585 int end = (start + size > 256) ? 256 : start + size, i;
79e53945 9586 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
79e53945 9587
7203425a 9588 for (i = start; i < end; i++) {
79e53945
JB		 9589 intel_crtc->lut_r[i] = red[i] >> 8;
9590 intel_crtc->lut_g[i] = green[i] >> 8;
9591 intel_crtc->lut_b[i] = blue[i] >> 8;
9592 }
9593
9594 intel_crtc_load_lut(crtc);
9595}
9596
79e53945
JB		 9597/* VESA 640x480x72Hz mode to set on the pipe */
9598static struct drm_display_mode load_detect_mode = {
9599 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
9600 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
9601};
9602
a8bb6818
DV		 9603struct drm_framebuffer *
9604__intel_framebuffer_create(struct drm_device *dev,
9605 struct drm_mode_fb_cmd2 *mode_cmd,
9606 struct drm_i915_gem_object *obj)
d2dff872
CW		 9607{
9608 struct intel_framebuffer *intel_fb;
9609 int ret;
9610
9611 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
9612 if (!intel_fb) {
6ccb81f2 9613 drm_gem_object_unreference(&obj->base);
d2dff872
CW		 9614 return ERR_PTR(-ENOMEM);
9615 }
9616
9617 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
dd4916c5
DV		 9618 if (ret)
9619 goto err;
d2dff872
CW		 9620
9621 return &intel_fb->base;
dd4916c5 9622err:
6ccb81f2 9623 drm_gem_object_unreference(&obj->base);
dd4916c5
DV		 9624 kfree(intel_fb);
9625
9626 return ERR_PTR(ret);
d2dff872
CW		 9627}
9628
b5ea642a 9629static struct drm_framebuffer *
a8bb6818
DV		 9630intel_framebuffer_create(struct drm_device *dev,
9631 struct drm_mode_fb_cmd2 *mode_cmd,
9632 struct drm_i915_gem_object *obj)
9633{
9634 struct drm_framebuffer *fb;
9635 int ret;
9636
9637 ret = i915_mutex_lock_interruptible(dev);
9638 if (ret)
9639 return ERR_PTR(ret);
9640 fb = __intel_framebuffer_create(dev, mode_cmd, obj);
9641 mutex_unlock(&dev->struct_mutex);
9642
9643 return fb;
9644}
9645
d2dff872
CW		 9646static u32
9647intel_framebuffer_pitch_for_width(int width, int bpp)
9648{
9649 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
9650 return ALIGN(pitch, 64);
9651}
9652
9653static u32
9654intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
9655{
9656 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
1267a26b 9657 return PAGE_ALIGN(pitch * mode->vdisplay);
d2dff872
CW		 9658}
9659
9660static struct drm_framebuffer *
9661intel_framebuffer_create_for_mode(struct drm_device *dev,
9662 struct drm_display_mode *mode,
9663 int depth, int bpp)
9664{
9665 struct drm_i915_gem_object *obj;
0fed39bd 9666 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
d2dff872
CW		 9667
9668 obj = i915_gem_alloc_object(dev,
9669 intel_framebuffer_size_for_mode(mode, bpp));
9670 if (obj == NULL)
9671 return ERR_PTR(-ENOMEM);
9672
9673 mode_cmd.width = mode->hdisplay;
9674 mode_cmd.height = mode->vdisplay;
308e5bcb
JB		 9675 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
9676 bpp);
5ca0c34a 9677 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
d2dff872
CW		 9678
9679 return intel_framebuffer_create(dev, &mode_cmd, obj);
9680}
9681
9682static struct drm_framebuffer *
9683mode_fits_in_fbdev(struct drm_device *dev,
9684 struct drm_display_mode *mode)
9685{
4520f53a 9686#ifdef CONFIG_DRM_I915_FBDEV
d2dff872
CW		 9687 struct drm_i915_private *dev_priv = dev->dev_private;
9688 struct drm_i915_gem_object *obj;
9689 struct drm_framebuffer *fb;
9690
4c0e5528 9691 if (!dev_priv->fbdev)
d2dff872
CW		 9692 return NULL;
9693
4c0e5528 9694 if (!dev_priv->fbdev->fb)
d2dff872
CW		 9695 return NULL;
9696
4c0e5528
DV		 9697 obj = dev_priv->fbdev->fb->obj;
9698 BUG_ON(!obj);
9699
8bcd4553 9700 fb = &dev_priv->fbdev->fb->base;
01f2c773
VS		 9701 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
9702 fb->bits_per_pixel))
d2dff872
CW		 9703 return NULL;
9704
01f2c773 9705 if (obj->base.size < mode->vdisplay * fb->pitches[0])
d2dff872
CW		 9706 return NULL;
9707
9708 return fb;
4520f53a
DV		 9709#else
9710 return NULL;
9711#endif
d2dff872
CW		 9712}
9713
d3a40d1b
ACO		 9714static int intel_modeset_setup_plane_state(struct drm_atomic_state *state,
9715 struct drm_crtc *crtc,
9716 struct drm_display_mode *mode,
9717 struct drm_framebuffer *fb,
9718 int x, int y)
9719{
9720 struct drm_plane_state *plane_state;
9721 int hdisplay, vdisplay;
9722 int ret;
9723
9724 plane_state = drm_atomic_get_plane_state(state, crtc->primary);
9725 if (IS_ERR(plane_state))
9726 return PTR_ERR(plane_state);
9727
9728 if (mode)
9729 drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
9730 else
9731 hdisplay = vdisplay = 0;
9732
9733 ret = drm_atomic_set_crtc_for_plane(plane_state, fb ? crtc : NULL);
9734 if (ret)
9735 return ret;
9736 drm_atomic_set_fb_for_plane(plane_state, fb);
9737 plane_state->crtc_x = 0;
9738 plane_state->crtc_y = 0;
9739 plane_state->crtc_w = hdisplay;
9740 plane_state->crtc_h = vdisplay;
9741 plane_state->src_x = x << 16;
9742 plane_state->src_y = y << 16;
9743 plane_state->src_w = hdisplay << 16;
9744 plane_state->src_h = vdisplay << 16;
9745
9746 return 0;
9747}
9748
d2434ab7 9749bool intel_get_load_detect_pipe(struct drm_connector *connector,
7173188d 9750 struct drm_display_mode *mode,
51fd371b
RC		 9751 struct intel_load_detect_pipe *old,
9752 struct drm_modeset_acquire_ctx *ctx)
79e53945
JB		 9753{
9754 struct intel_crtc *intel_crtc;
d2434ab7
DV		 9755 struct intel_encoder *intel_encoder =
9756 intel_attached_encoder(connector);
79e53945 9757 struct drm_crtc *possible_crtc;
4ef69c7a 9758 struct drm_encoder *encoder = &intel_encoder->base;
79e53945
JB		 9759 struct drm_crtc *crtc = NULL;
9760 struct drm_device *dev = encoder->dev;
94352cf9 9761 struct drm_framebuffer *fb;
51fd371b 9762 struct drm_mode_config *config = &dev->mode_config;
83a57153 9763 struct drm_atomic_state *state = NULL;
944b0c76 9764 struct drm_connector_state *connector_state;
4be07317 9765 struct intel_crtc_state *crtc_state;
51fd371b 9766 int ret, i = -1;
79e53945 9767
d2dff872 9768 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
c23cc417 9769 connector->base.id, connector->name,
8e329a03 9770 encoder->base.id, encoder->name);
d2dff872 9771
51fd371b
RC		 9772retry:
9773 ret = drm_modeset_lock(&config->connection_mutex, ctx);
9774 if (ret)
9775 goto fail_unlock;
6e9f798d 9776
79e53945
JB		 9777 /*
9778 * Algorithm gets a little messy:
7a5e4805 9779 *
79e53945
JB		 9780 * - if the connector already has an assigned crtc, use it (but make
9781 * sure it's on first)
7a5e4805 9782 *
79e53945
JB		 9783 * - try to find the first unused crtc that can drive this connector,
9784 * and use that if we find one
79e53945
JB		 9785 */
9786
9787 /* See if we already have a CRTC for this connector */
9788 if (encoder->crtc) {
9789 crtc = encoder->crtc;
8261b191 9790
51fd371b 9791 ret = drm_modeset_lock(&crtc->mutex, ctx);
4d02e2de
DV		 9792 if (ret)
9793 goto fail_unlock;
9794 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
51fd371b
RC		 9795 if (ret)
9796 goto fail_unlock;
7b24056b 9797
24218aac 9798 old->dpms_mode = connector->dpms;
8261b191
CW		 9799 old->load_detect_temp = false;
9800
9801 /* Make sure the crtc and connector are running */
24218aac
DV		 9802 if (connector->dpms != DRM_MODE_DPMS_ON)
9803 connector->funcs->dpms(connector, DRM_MODE_DPMS_ON);
8261b191 9804
7173188d 9805 return true;
79e53945
JB		 9806 }
9807
9808 /* Find an unused one (if possible) */
70e1e0ec 9809 for_each_crtc(dev, possible_crtc) {
79e53945
JB		 9810 i++;
9811 if (!(encoder->possible_crtcs & (1 << i)))
9812 continue;
83d65738 9813 if (possible_crtc->state->enable)
a459249c
VS		 9814 continue;
9815 /* This can occur when applying the pipe A quirk on resume. */
9816 if (to_intel_crtc(possible_crtc)->new_enabled)
9817 continue;
9818
9819 crtc = possible_crtc;
9820 break;
79e53945
JB		 9821 }
9822
9823 /*
9824 * If we didn't find an unused CRTC, don't use any.
9825 */
9826 if (!crtc) {
7173188d 9827 DRM_DEBUG_KMS("no pipe available for load-detect\n");
51fd371b 9828 goto fail_unlock;
79e53945
JB		 9829 }
9830
51fd371b
RC		 9831 ret = drm_modeset_lock(&crtc->mutex, ctx);
9832 if (ret)
4d02e2de
DV		 9833 goto fail_unlock;
9834 ret = drm_modeset_lock(&crtc->primary->mutex, ctx);
9835 if (ret)
51fd371b 9836 goto fail_unlock;
fc303101
DV		 9837 intel_encoder->new_crtc = to_intel_crtc(crtc);
9838 to_intel_connector(connector)->new_encoder = intel_encoder;
79e53945
JB		 9839
9840 intel_crtc = to_intel_crtc(crtc);
412b61d8 9841 intel_crtc->new_enabled = true;
24218aac 9842 old->dpms_mode = connector->dpms;
8261b191 9843 old->load_detect_temp = true;
d2dff872 9844 old->release_fb = NULL;
79e53945 9845
83a57153
ACO		 9846 state = drm_atomic_state_alloc(dev);
9847 if (!state)
9848 return false;
9849
9850 state->acquire_ctx = ctx;
9851
944b0c76
ACO		 9852 connector_state = drm_atomic_get_connector_state(state, connector);
9853 if (IS_ERR(connector_state)) {
9854 ret = PTR_ERR(connector_state);
9855 goto fail;
9856 }
9857
9858 connector_state->crtc = crtc;
9859 connector_state->best_encoder = &intel_encoder->base;
9860
4be07317
ACO		 9861 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
9862 if (IS_ERR(crtc_state)) {
9863 ret = PTR_ERR(crtc_state);
9864 goto fail;
9865 }
9866
9867 crtc_state->base.enable = true;
9868
6492711d
CW		 9869 if (!mode)
9870 mode = &load_detect_mode;
79e53945 9871
d2dff872
CW		 9872 /* We need a framebuffer large enough to accommodate all accesses
9873 * that the plane may generate whilst we perform load detection.
9874 * We can not rely on the fbcon either being present (we get called
9875 * during its initialisation to detect all boot displays, or it may
9876 * not even exist) or that it is large enough to satisfy the
9877 * requested mode.
9878 */
94352cf9
DV		 9879 fb = mode_fits_in_fbdev(dev, mode);
9880 if (fb == NULL) {
d2dff872 9881 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
94352cf9
DV		 9882 fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
9883 old->release_fb = fb;
d2dff872
CW		 9884 } else
9885 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
94352cf9 9886 if (IS_ERR(fb)) {
d2dff872 9887 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
412b61d8 9888 goto fail;
79e53945 9889 }
79e53945 9890
d3a40d1b
ACO		 9891 ret = intel_modeset_setup_plane_state(state, crtc, mode, fb, 0, 0);
9892 if (ret)
9893 goto fail;
9894
8c7b5ccb
ACO		 9895 drm_mode_copy(&crtc_state->base.mode, mode);
9896
9897 if (intel_set_mode(crtc, state)) {
6492711d 9898 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
d2dff872
CW		 9899 if (old->release_fb)
9900 old->release_fb->funcs->destroy(old->release_fb);
412b61d8 9901 goto fail;
79e53945 9902 }
9128b040 9903 crtc->primary->crtc = crtc;
7173188d 9904
79e53945 9905 /* let the connector get through one full cycle before testing */
9d0498a2 9906 intel_wait_for_vblank(dev, intel_crtc->pipe);
7173188d 9907 return true;
412b61d8
VS		 9908
9909 fail:
83d65738 9910 intel_crtc->new_enabled = crtc->state->enable;
51fd371b 9911fail_unlock:
e5d958ef
ACO		 9912 drm_atomic_state_free(state);
9913 state = NULL;
83a57153 9914
51fd371b
RC		 9915 if (ret == -EDEADLK) {
9916 drm_modeset_backoff(ctx);
9917 goto retry;
9918 }
9919
412b61d8 9920 return false;
79e53945
JB		 9921}
9922
d2434ab7 9923void intel_release_load_detect_pipe(struct drm_connector *connector,
49172fee
ACO		 9924 struct intel_load_detect_pipe *old,
9925 struct drm_modeset_acquire_ctx *ctx)
79e53945 9926{
83a57153 9927 struct drm_device *dev = connector->dev;
d2434ab7
DV		 9928 struct intel_encoder *intel_encoder =
9929 intel_attached_encoder(connector);
4ef69c7a 9930 struct drm_encoder *encoder = &intel_encoder->base;
7b24056b 9931 struct drm_crtc *crtc = encoder->crtc;
412b61d8 9932 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
83a57153 9933 struct drm_atomic_state *state;
944b0c76 9934 struct drm_connector_state *connector_state;
4be07317 9935 struct intel_crtc_state *crtc_state;
d3a40d1b 9936 int ret;
79e53945 9937
d2dff872 9938 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
c23cc417 9939 connector->base.id, connector->name,
8e329a03 9940 encoder->base.id, encoder->name);
d2dff872 9941
8261b191 9942 if (old->load_detect_temp) {
83a57153 9943 state = drm_atomic_state_alloc(dev);
944b0c76
ACO		 9944 if (!state)
9945 goto fail;
83a57153
ACO		 9946
9947 state->acquire_ctx = ctx;
9948
944b0c76
ACO		 9949 connector_state = drm_atomic_get_connector_state(state, connector);
9950 if (IS_ERR(connector_state))
9951 goto fail;
9952
4be07317
ACO		 9953 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
9954 if (IS_ERR(crtc_state))
9955 goto fail;
9956
fc303101
DV		 9957 to_intel_connector(connector)->new_encoder = NULL;
9958 intel_encoder->new_crtc = NULL;
412b61d8 9959 intel_crtc->new_enabled = false;
944b0c76
ACO		 9960
9961 connector_state->best_encoder = NULL;
9962 connector_state->crtc = NULL;
9963
4be07317
ACO		 9964 crtc_state->base.enable = false;
9965
d3a40d1b
ACO		 9966 ret = intel_modeset_setup_plane_state(state, crtc, NULL, NULL,
9967 0, 0);
9968 if (ret)
9969 goto fail;
9970
8c7b5ccb 9971 intel_set_mode(crtc, state);
83a57153
ACO		 9972
9973 drm_atomic_state_free(state);
d2dff872 9974
36206361
DV		 9975 if (old->release_fb) {
9976 drm_framebuffer_unregister_private(old->release_fb);
9977 drm_framebuffer_unreference(old->release_fb);
9978 }
d2dff872 9979
0622a53c 9980 return;
79e53945
JB		 9981 }
9982
c751ce4f 9983 /* Switch crtc and encoder back off if necessary */
24218aac
DV		 9984 if (old->dpms_mode != DRM_MODE_DPMS_ON)
9985 connector->funcs->dpms(connector, old->dpms_mode);
944b0c76
ACO		 9986
9987 return;
9988fail:
9989 DRM_DEBUG_KMS("Couldn't release load detect pipe.\n");
9990 drm_atomic_state_free(state);
79e53945
JB		 9991}
9992
da4a1efa 9993static int i9xx_pll_refclk(struct drm_device *dev,
5cec258b 9994 const struct intel_crtc_state *pipe_config)
da4a1efa
VS		 9995{
9996 struct drm_i915_private *dev_priv = dev->dev_private;
9997 u32 dpll = pipe_config->dpll_hw_state.dpll;
9998
9999 if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
e91e941b 10000 return dev_priv->vbt.lvds_ssc_freq;
da4a1efa
VS		 10001 else if (HAS_PCH_SPLIT(dev))
10002 return 120000;
10003 else if (!IS_GEN2(dev))
10004 return 96000;
10005 else
10006 return 48000;
10007}
10008
79e53945 10009/* Returns the clock of the currently programmed mode of the given pipe. */
f1f644dc 10010static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
5cec258b 10011 struct intel_crtc_state *pipe_config)
79e53945 10012{
f1f644dc 10013 struct drm_device *dev = crtc->base.dev;
79e53945 10014 struct drm_i915_private *dev_priv = dev->dev_private;
f1f644dc 10015 int pipe = pipe_config->cpu_transcoder;
293623f7 10016 u32 dpll = pipe_config->dpll_hw_state.dpll;
79e53945
JB		 10017 u32 fp;
10018 intel_clock_t clock;
da4a1efa 10019 int refclk = i9xx_pll_refclk(dev, pipe_config);
79e53945
JB		 10020
10021 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
293623f7 10022 fp = pipe_config->dpll_hw_state.fp0;
79e53945 10023 else
293623f7 10024 fp = pipe_config->dpll_hw_state.fp1;
79e53945
JB		 10025
10026 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
f2b115e6
AJ		 10027 if (IS_PINEVIEW(dev)) {
10028 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
10029 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
2177832f
SL		 10030 } else {
10031 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
10032 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
10033 }
10034
a6c45cf0 10035 if (!IS_GEN2(dev)) {
f2b115e6
AJ		 10036 if (IS_PINEVIEW(dev))
10037 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
10038 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
2177832f
SL		 10039 else
10040 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
79e53945
JB		 10041 DPLL_FPA01_P1_POST_DIV_SHIFT);
10042
10043 switch (dpll & DPLL_MODE_MASK) {
10044 case DPLLB_MODE_DAC_SERIAL:
10045 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
10046 5 : 10;
10047 break;
10048 case DPLLB_MODE_LVDS:
10049 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
10050 7 : 14;
10051 break;
10052 default:
28c97730 10053 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
79e53945 10054 "mode\n", (int)(dpll & DPLL_MODE_MASK));
f1f644dc 10055 return;
79e53945
JB		 10056 }
10057
ac58c3f0 10058 if (IS_PINEVIEW(dev))
da4a1efa 10059 pineview_clock(refclk, &clock);
ac58c3f0 10060 else
da4a1efa 10061 i9xx_clock(refclk, &clock);
79e53945 10062 } else {
0fb58223 10063 u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
b1c560d1 10064 bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
79e53945
JB		 10065
10066 if (is_lvds) {
10067 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
10068 DPLL_FPA01_P1_POST_DIV_SHIFT);
b1c560d1
VS		 10069
10070 if (lvds & LVDS_CLKB_POWER_UP)
10071 clock.p2 = 7;
10072 else
10073 clock.p2 = 14;
79e53945
JB		 10074 } else {
10075 if (dpll & PLL_P1_DIVIDE_BY_TWO)
10076 clock.p1 = 2;
10077 else {
10078 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
10079 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
10080 }
10081 if (dpll & PLL_P2_DIVIDE_BY_4)
10082 clock.p2 = 4;
10083 else
10084 clock.p2 = 2;
79e53945 10085 }
da4a1efa
VS		 10086
10087 i9xx_clock(refclk, &clock);
79e53945
JB		 10088 }
10089
18442d08
VS		 10090 /*
10091 * This value includes pixel_multiplier. We will use
241bfc38 10092 * port_clock to compute adjusted_mode.crtc_clock in the
18442d08
VS		 10093 * encoder's get_config() function.
10094 */
10095 pipe_config->port_clock = clock.dot;
f1f644dc
JB		 10096}
10097
6878da05
VS		 10098int intel_dotclock_calculate(int link_freq,
10099 const struct intel_link_m_n *m_n)
f1f644dc 10100{
f1f644dc
JB		 10101 /*
10102 * The calculation for the data clock is:
1041a02f 10103 * pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
f1f644dc 10104 * But we want to avoid losing precison if possible, so:
1041a02f 10105 * pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
f1f644dc
JB		 10106 *
10107 * and the link clock is simpler:
1041a02f 10108 * link_clock = (m * link_clock) / n
f1f644dc
JB		 10109 */
10110
6878da05
VS		 10111 if (!m_n->link_n)
10112 return 0;
f1f644dc 10113
6878da05
VS		 10114 return div_u64((u64)m_n->link_m * link_freq, m_n->link_n);
10115}
f1f644dc 10116
18442d08 10117static void ironlake_pch_clock_get(struct intel_crtc *crtc,
5cec258b 10118 struct intel_crtc_state *pipe_config)
6878da05
VS		 10119{
10120 struct drm_device *dev = crtc->base.dev;
79e53945 10121
18442d08
VS		 10122 /* read out port_clock from the DPLL */
10123 i9xx_crtc_clock_get(crtc, pipe_config);
f1f644dc 10124
f1f644dc 10125 /*
18442d08 10126 * This value does not include pixel_multiplier.
241bfc38 10127 * We will check that port_clock and adjusted_mode.crtc_clock
18442d08
VS		 10128 * agree once we know their relationship in the encoder's
10129 * get_config() function.
79e53945 10130 */
2d112de7 10131 pipe_config->base.adjusted_mode.crtc_clock =
18442d08
VS		 10132 intel_dotclock_calculate(intel_fdi_link_freq(dev) * 10000,
10133 &pipe_config->fdi_m_n);
79e53945
JB		 10134}
10135
10136/** Returns the currently programmed mode of the given pipe. */
10137struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
10138 struct drm_crtc *crtc)
10139{
548f245b 10140 struct drm_i915_private *dev_priv = dev->dev_private;
79e53945 10141 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6e3c9717 10142 enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
79e53945 10143 struct drm_display_mode *mode;
5cec258b 10144 struct intel_crtc_state pipe_config;
fe2b8f9d
PZ		 10145 int htot = I915_READ(HTOTAL(cpu_transcoder));
10146 int hsync = I915_READ(HSYNC(cpu_transcoder));
10147 int vtot = I915_READ(VTOTAL(cpu_transcoder));
10148 int vsync = I915_READ(VSYNC(cpu_transcoder));
293623f7 10149 enum pipe pipe = intel_crtc->pipe;
79e53945
JB		 10150
10151 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
10152 if (!mode)
10153 return NULL;
10154
f1f644dc
JB		 10155 /*
10156 * Construct a pipe_config sufficient for getting the clock info
10157 * back out of crtc_clock_get.
10158 *
10159 * Note, if LVDS ever uses a non-1 pixel multiplier, we'll need
10160 * to use a real value here instead.
10161 */
293623f7 10162 pipe_config.cpu_transcoder = (enum transcoder) pipe;
f1f644dc 10163 pipe_config.pixel_multiplier = 1;
293623f7
VS		 10164 pipe_config.dpll_hw_state.dpll = I915_READ(DPLL(pipe));
10165 pipe_config.dpll_hw_state.fp0 = I915_READ(FP0(pipe));
10166 pipe_config.dpll_hw_state.fp1 = I915_READ(FP1(pipe));
f1f644dc
JB		 10167 i9xx_crtc_clock_get(intel_crtc, &pipe_config);
10168
773ae034 10169 mode->clock = pipe_config.port_clock / pipe_config.pixel_multiplier;
79e53945
JB		 10170 mode->hdisplay = (htot & 0xffff) + 1;
10171 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
10172 mode->hsync_start = (hsync & 0xffff) + 1;
10173 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
10174 mode->vdisplay = (vtot & 0xffff) + 1;
10175 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
10176 mode->vsync_start = (vsync & 0xffff) + 1;
10177 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
10178
10179 drm_mode_set_name(mode);
79e53945
JB		 10180
10181 return mode;
10182}
10183
652c393a
JB		 10184static void intel_decrease_pllclock(struct drm_crtc *crtc)
10185{
10186 struct drm_device *dev = crtc->dev;
fbee40df 10187 struct drm_i915_private *dev_priv = dev->dev_private;
652c393a 10188 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
652c393a 10189
baff296c 10190 if (!HAS_GMCH_DISPLAY(dev))
652c393a
JB		 10191 return;
10192
10193 if (!dev_priv->lvds_downclock_avail)
10194 return;
10195
10196 /*
10197 * Since this is called by a timer, we should never get here in
10198 * the manual case.
10199 */
10200 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
dc257cf1
DV		 10201 int pipe = intel_crtc->pipe;
10202 int dpll_reg = DPLL(pipe);
10203 int dpll;
f6e5b160 10204
44d98a61 10205 DRM_DEBUG_DRIVER("downclocking LVDS\n");
652c393a 10206
8ac5a6d5 10207 assert_panel_unlocked(dev_priv, pipe);
652c393a 10208
dc257cf1 10209 dpll = I915_READ(dpll_reg);
652c393a
JB		 10210 dpll |= DISPLAY_RATE_SELECT_FPA1;
10211 I915_WRITE(dpll_reg, dpll);
9d0498a2 10212 intel_wait_for_vblank(dev, pipe);
652c393a
JB		 10213 dpll = I915_READ(dpll_reg);
10214 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
44d98a61 10215 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
652c393a
JB		 10216 }
10217
10218}
10219
f047e395
CW		 10220void intel_mark_busy(struct drm_device *dev)
10221{
c67a470b
PZ		 10222 struct drm_i915_private *dev_priv = dev->dev_private;
10223
f62a0076
CW		 10224 if (dev_priv->mm.busy)
10225 return;
10226
43694d69 10227 intel_runtime_pm_get(dev_priv);
c67a470b 10228 i915_update_gfx_val(dev_priv);
43cf3bf0
CW		 10229 if (INTEL_INFO(dev)->gen >= 6)
10230 gen6_rps_busy(dev_priv);
f62a0076 10231 dev_priv->mm.busy = true;
f047e395
CW		 10232}
10233
10234void intel_mark_idle(struct drm_device *dev)
652c393a 10235{
c67a470b 10236 struct drm_i915_private *dev_priv = dev->dev_private;
652c393a 10237 struct drm_crtc *crtc;
652c393a 10238
f62a0076
CW		 10239 if (!dev_priv->mm.busy)
10240 return;
10241
10242 dev_priv->mm.busy = false;
10243
70e1e0ec 10244 for_each_crtc(dev, crtc) {
f4510a27 10245 if (!crtc->primary->fb)
652c393a
JB		 10246 continue;
10247
725a5b54 10248 intel_decrease_pllclock(crtc);
652c393a 10249 }
b29c19b6 10250
3d13ef2e 10251 if (INTEL_INFO(dev)->gen >= 6)
b29c19b6 10252 gen6_rps_idle(dev->dev_private);
bb4cdd53 10253
43694d69 10254 intel_runtime_pm_put(dev_priv);
652c393a
JB		 10255}
10256
f5de6e07
ACO		 10257static void intel_crtc_set_state(struct intel_crtc *crtc,
10258 struct intel_crtc_state *crtc_state)
10259{
10260 kfree(crtc->config);
10261 crtc->config = crtc_state;
16f3f658 10262 crtc->base.state = &crtc_state->base;
f5de6e07
ACO		 10263}
10264
79e53945
JB		 10265static void intel_crtc_destroy(struct drm_crtc *crtc)
10266{
10267 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
67e77c5a
DV		 10268 struct drm_device *dev = crtc->dev;
10269 struct intel_unpin_work *work;
67e77c5a 10270
5e2d7afc 10271 spin_lock_irq(&dev->event_lock);
67e77c5a
DV		 10272 work = intel_crtc->unpin_work;
10273 intel_crtc->unpin_work = NULL;
5e2d7afc 10274 spin_unlock_irq(&dev->event_lock);
67e77c5a
DV		 10275
10276 if (work) {
10277 cancel_work_sync(&work->work);
10278 kfree(work);
10279 }
79e53945 10280
f5de6e07 10281 intel_crtc_set_state(intel_crtc, NULL);
79e53945 10282 drm_crtc_cleanup(crtc);
67e77c5a 10283
79e53945
JB		 10284 kfree(intel_crtc);
10285}
10286
6b95a207
KH		 10287static void intel_unpin_work_fn(struct work_struct *__work)
10288{
10289 struct intel_unpin_work *work =
10290 container_of(__work, struct intel_unpin_work, work);
b4a98e57 10291 struct drm_device *dev = work->crtc->dev;
f99d7069 10292 enum pipe pipe = to_intel_crtc(work->crtc)->pipe;
6b95a207 10293
b4a98e57 10294 mutex_lock(&dev->struct_mutex);
82bc3b2d 10295 intel_unpin_fb_obj(work->old_fb, work->crtc->primary->state);
05394f39 10296 drm_gem_object_unreference(&work->pending_flip_obj->base);
d9e86c0e 10297
7ff0ebcc 10298 intel_fbc_update(dev);
f06cc1b9
JH		 10299
10300 if (work->flip_queued_req)
146d84f0 10301 i915_gem_request_assign(&work->flip_queued_req, NULL);
b4a98e57
CW		 10302 mutex_unlock(&dev->struct_mutex);
10303
f99d7069 10304 intel_frontbuffer_flip_complete(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
89ed88ba 10305 drm_framebuffer_unreference(work->old_fb);
f99d7069 10306
b4a98e57
CW		 10307 BUG_ON(atomic_read(&to_intel_crtc(work->crtc)->unpin_work_count) == 0);
10308 atomic_dec(&to_intel_crtc(work->crtc)->unpin_work_count);
10309
6b95a207
KH		 10310 kfree(work);
10311}
10312
1afe3e9d 10313static void do_intel_finish_page_flip(struct drm_device *dev,
49b14a5c 10314 struct drm_crtc *crtc)
6b95a207 10315{
6b95a207
KH		 10316 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10317 struct intel_unpin_work *work;
6b95a207
KH		 10318 unsigned long flags;
10319
10320 /* Ignore early vblank irqs */
10321 if (intel_crtc == NULL)
10322 return;
10323
f326038a
DV		 10324 /*
10325 * This is called both by irq handlers and the reset code (to complete
10326 * lost pageflips) so needs the full irqsave spinlocks.
10327 */
6b95a207
KH		 10328 spin_lock_irqsave(&dev->event_lock, flags);
10329 work = intel_crtc->unpin_work;
e7d841ca
CW		 10330
10331 /* Ensure we don't miss a work->pending update ... */
10332 smp_rmb();
10333
10334 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
6b95a207
KH		 10335 spin_unlock_irqrestore(&dev->event_lock, flags);
10336 return;
10337 }
10338
d6bbafa1 10339 page_flip_completed(intel_crtc);
0af7e4df 10340
6b95a207 10341 spin_unlock_irqrestore(&dev->event_lock, flags);
6b95a207
KH		 10342}
10343
1afe3e9d
JB		 10344void intel_finish_page_flip(struct drm_device *dev, int pipe)
10345{
fbee40df 10346 struct drm_i915_private *dev_priv = dev->dev_private;
1afe3e9d
JB		 10347 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
10348
49b14a5c 10349 do_intel_finish_page_flip(dev, crtc);
1afe3e9d
JB		 10350}
10351
10352void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
10353{
fbee40df 10354 struct drm_i915_private *dev_priv = dev->dev_private;
1afe3e9d
JB		 10355 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
10356
49b14a5c 10357 do_intel_finish_page_flip(dev, crtc);
1afe3e9d
JB		 10358}
10359
75f7f3ec
VS		 10360/* Is 'a' after or equal to 'b'? */
10361static bool g4x_flip_count_after_eq(u32 a, u32 b)
10362{
10363 return !((a - b) & 0x80000000);
10364}
10365
10366static bool page_flip_finished(struct intel_crtc *crtc)
10367{
10368 struct drm_device *dev = crtc->base.dev;
10369 struct drm_i915_private *dev_priv = dev->dev_private;
10370
bdfa7542
VS		 10371 if (i915_reset_in_progress(&dev_priv->gpu_error) ||
10372 crtc->reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter))
10373 return true;
10374
75f7f3ec
VS		 10375 /*
10376 * The relevant registers doen't exist on pre-ctg.
10377 * As the flip done interrupt doesn't trigger for mmio
10378 * flips on gmch platforms, a flip count check isn't
10379 * really needed there. But since ctg has the registers,
10380 * include it in the check anyway.
10381 */
10382 if (INTEL_INFO(dev)->gen < 5 && !IS_G4X(dev))
10383 return true;
10384
10385 /*
10386 * A DSPSURFLIVE check isn't enough in case the mmio and CS flips
10387 * used the same base address. In that case the mmio flip might
10388 * have completed, but the CS hasn't even executed the flip yet.
10389 *
10390 * A flip count check isn't enough as the CS might have updated
10391 * the base address just after start of vblank, but before we
10392 * managed to process the interrupt. This means we'd complete the
10393 * CS flip too soon.
10394 *
10395 * Combining both checks should get us a good enough result. It may
10396 * still happen that the CS flip has been executed, but has not
10397 * yet actually completed. But in case the base address is the same
10398 * anyway, we don't really care.
10399 */
10400 return (I915_READ(DSPSURFLIVE(crtc->plane)) & ~0xfff) ==
10401 crtc->unpin_work->gtt_offset &&
10402 g4x_flip_count_after_eq(I915_READ(PIPE_FLIPCOUNT_GM45(crtc->pipe)),
10403 crtc->unpin_work->flip_count);
10404}
10405
6b95a207
KH		 10406void intel_prepare_page_flip(struct drm_device *dev, int plane)
10407{
fbee40df 10408 struct drm_i915_private *dev_priv = dev->dev_private;
6b95a207
KH		 10409 struct intel_crtc *intel_crtc =
10410 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
10411 unsigned long flags;
10412
f326038a
DV		 10413
10414 /*
10415 * This is called both by irq handlers and the reset code (to complete
10416 * lost pageflips) so needs the full irqsave spinlocks.
10417 *
10418 * NB: An MMIO update of the plane base pointer will also
e7d841ca
CW		 10419 * generate a page-flip completion irq, i.e. every modeset
10420 * is also accompanied by a spurious intel_prepare_page_flip().
10421 */
6b95a207 10422 spin_lock_irqsave(&dev->event_lock, flags);
75f7f3ec 10423 if (intel_crtc->unpin_work && page_flip_finished(intel_crtc))
e7d841ca 10424 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
6b95a207
KH		 10425 spin_unlock_irqrestore(&dev->event_lock, flags);
10426}
10427
eba905b2 10428static inline void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
e7d841ca
CW		 10429{
10430 /* Ensure that the work item is consistent when activating it ... */
10431 smp_wmb();
10432 atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
10433 /* and that it is marked active as soon as the irq could fire. */
10434 smp_wmb();
10435}
10436
8c9f3aaf
JB		 10437static int intel_gen2_queue_flip(struct drm_device *dev,
10438 struct drm_crtc *crtc,
10439 struct drm_framebuffer *fb,
ed8d1975 10440 struct drm_i915_gem_object *obj,
a4872ba6 10441 struct intel_engine_cs *ring,
ed8d1975 10442 uint32_t flags)
8c9f3aaf 10443{
8c9f3aaf 10444 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8c9f3aaf
JB		 10445 u32 flip_mask;
10446 int ret;
10447
6d90c952 10448 ret = intel_ring_begin(ring, 6);
8c9f3aaf 10449 if (ret)
4fa62c89 10450 return ret;
8c9f3aaf
JB		 10451
10452 /* Can't queue multiple flips, so wait for the previous
10453 * one to finish before executing the next.
10454 */
10455 if (intel_crtc->plane)
10456 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10457 else
10458 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6d90c952
DV		 10459 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10460 intel_ring_emit(ring, MI_NOOP);
10461 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10462 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10463 intel_ring_emit(ring, fb->pitches[0]);
75f7f3ec 10464 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
6d90c952 10465 intel_ring_emit(ring, 0); /* aux display base address, unused */
e7d841ca
CW		 10466
10467 intel_mark_page_flip_active(intel_crtc);
09246732 10468 __intel_ring_advance(ring);
83d4092b 10469 return 0;
8c9f3aaf
JB		 10470}
10471
10472static int intel_gen3_queue_flip(struct drm_device *dev,
10473 struct drm_crtc *crtc,
10474 struct drm_framebuffer *fb,
ed8d1975 10475 struct drm_i915_gem_object *obj,
a4872ba6 10476 struct intel_engine_cs *ring,
ed8d1975 10477 uint32_t flags)
8c9f3aaf 10478{
8c9f3aaf 10479 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
8c9f3aaf
JB		 10480 u32 flip_mask;
10481 int ret;
10482
6d90c952 10483 ret = intel_ring_begin(ring, 6);
8c9f3aaf 10484 if (ret)
4fa62c89 10485 return ret;
8c9f3aaf
JB		 10486
10487 if (intel_crtc->plane)
10488 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
10489 else
10490 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6d90c952
DV		 10491 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
10492 intel_ring_emit(ring, MI_NOOP);
10493 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
10494 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10495 intel_ring_emit(ring, fb->pitches[0]);
75f7f3ec 10496 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
6d90c952
DV		 10497 intel_ring_emit(ring, MI_NOOP);
10498
e7d841ca 10499 intel_mark_page_flip_active(intel_crtc);
09246732 10500 __intel_ring_advance(ring);
83d4092b 10501 return 0;
8c9f3aaf
JB		 10502}
10503
10504static int intel_gen4_queue_flip(struct drm_device *dev,
10505 struct drm_crtc *crtc,
10506 struct drm_framebuffer *fb,
ed8d1975 10507 struct drm_i915_gem_object *obj,
a4872ba6 10508 struct intel_engine_cs *ring,
ed8d1975 10509 uint32_t flags)
8c9f3aaf
JB		 10510{
10511 struct drm_i915_private *dev_priv = dev->dev_private;
10512 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10513 uint32_t pf, pipesrc;
10514 int ret;
10515
6d90c952 10516 ret = intel_ring_begin(ring, 4);
8c9f3aaf 10517 if (ret)
4fa62c89 10518 return ret;
8c9f3aaf
JB		 10519
10520 /* i965+ uses the linear or tiled offsets from the
10521 * Display Registers (which do not change across a page-flip)
10522 * so we need only reprogram the base address.
10523 */
6d90c952
DV		 10524 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10525 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10526 intel_ring_emit(ring, fb->pitches[0]);
75f7f3ec 10527 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset |
c2c75131 10528 obj->tiling_mode);
8c9f3aaf
JB		 10529
10530 /* XXX Enabling the panel-fitter across page-flip is so far
10531 * untested on non-native modes, so ignore it for now.
10532 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
10533 */
10534 pf = 0;
10535 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6d90c952 10536 intel_ring_emit(ring, pf | pipesrc);
e7d841ca
CW		 10537
10538 intel_mark_page_flip_active(intel_crtc);
09246732 10539 __intel_ring_advance(ring);
83d4092b 10540 return 0;
8c9f3aaf
JB		 10541}
10542
10543static int intel_gen6_queue_flip(struct drm_device *dev,
10544 struct drm_crtc *crtc,
10545 struct drm_framebuffer *fb,
ed8d1975 10546 struct drm_i915_gem_object *obj,
a4872ba6 10547 struct intel_engine_cs *ring,
ed8d1975 10548 uint32_t flags)
8c9f3aaf
JB		 10549{
10550 struct drm_i915_private *dev_priv = dev->dev_private;
10551 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10552 uint32_t pf, pipesrc;
10553 int ret;
10554
6d90c952 10555 ret = intel_ring_begin(ring, 4);
8c9f3aaf 10556 if (ret)
4fa62c89 10557 return ret;
8c9f3aaf 10558
6d90c952
DV		 10559 intel_ring_emit(ring, MI_DISPLAY_FLIP |
10560 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
10561 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
75f7f3ec 10562 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
8c9f3aaf 10563
dc257cf1
DV		 10564 /* Contrary to the suggestions in the documentation,
10565 * "Enable Panel Fitter" does not seem to be required when page
10566 * flipping with a non-native mode, and worse causes a normal
10567 * modeset to fail.
10568 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
10569 */
10570 pf = 0;
8c9f3aaf 10571 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6d90c952 10572 intel_ring_emit(ring, pf | pipesrc);
e7d841ca
CW		 10573
10574 intel_mark_page_flip_active(intel_crtc);
09246732 10575 __intel_ring_advance(ring);
83d4092b 10576 return 0;
8c9f3aaf
JB		 10577}
10578
7c9017e5
JB		 10579static int intel_gen7_queue_flip(struct drm_device *dev,
10580 struct drm_crtc *crtc,
10581 struct drm_framebuffer *fb,
ed8d1975 10582 struct drm_i915_gem_object *obj,
a4872ba6 10583 struct intel_engine_cs *ring,
ed8d1975 10584 uint32_t flags)
7c9017e5 10585{
7c9017e5 10586 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
cb05d8de 10587 uint32_t plane_bit = 0;
ffe74d75
CW		 10588 int len, ret;
10589
eba905b2 10590 switch (intel_crtc->plane) {
cb05d8de
DV		 10591 case PLANE_A:
10592 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
10593 break;
10594 case PLANE_B:
10595 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
10596 break;
10597 case PLANE_C:
10598 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
10599 break;
10600 default:
10601 WARN_ONCE(1, "unknown plane in flip command\n");
4fa62c89 10602 return -ENODEV;
cb05d8de
DV		 10603 }
10604
ffe74d75 10605 len = 4;
f476828a 10606 if (ring->id == RCS) {
ffe74d75 10607 len += 6;
f476828a
DL		 10608 /*
10609 * On Gen 8, SRM is now taking an extra dword to accommodate
10610 * 48bits addresses, and we need a NOOP for the batch size to
10611 * stay even.
10612 */
10613 if (IS_GEN8(dev))
10614 len += 2;
10615 }
ffe74d75 10616
f66fab8e
VS		 10617 /*
10618 * BSpec MI_DISPLAY_FLIP for IVB:
10619 * "The full packet must be contained within the same cache line."
10620 *
10621 * Currently the LRI+SRM+MI_DISPLAY_FLIP all fit within the same
10622 * cacheline, if we ever start emitting more commands before
10623 * the MI_DISPLAY_FLIP we may need to first emit everything else,
10624 * then do the cacheline alignment, and finally emit the
10625 * MI_DISPLAY_FLIP.
10626 */
10627 ret = intel_ring_cacheline_align(ring);
10628 if (ret)
4fa62c89 10629 return ret;
f66fab8e 10630
ffe74d75 10631 ret = intel_ring_begin(ring, len);
7c9017e5 10632 if (ret)
4fa62c89 10633 return ret;
7c9017e5 10634
ffe74d75
CW		 10635 /* Unmask the flip-done completion message. Note that the bspec says that
10636 * we should do this for both the BCS and RCS, and that we must not unmask
10637 * more than one flip event at any time (or ensure that one flip message
10638 * can be sent by waiting for flip-done prior to queueing new flips).
10639 * Experimentation says that BCS works despite DERRMR masking all
10640 * flip-done completion events and that unmasking all planes at once
10641 * for the RCS also doesn't appear to drop events. Setting the DERRMR
10642 * to zero does lead to lockups within MI_DISPLAY_FLIP.
10643 */
10644 if (ring->id == RCS) {
10645 intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
10646 intel_ring_emit(ring, DERRMR);
10647 intel_ring_emit(ring, ~(DERRMR_PIPEA_PRI_FLIP_DONE |
10648 DERRMR_PIPEB_PRI_FLIP_DONE |
10649 DERRMR_PIPEC_PRI_FLIP_DONE));
f476828a
DL		 10650 if (IS_GEN8(dev))
10651 intel_ring_emit(ring, MI_STORE_REGISTER_MEM_GEN8(1) |
10652 MI_SRM_LRM_GLOBAL_GTT);
10653 else
10654 intel_ring_emit(ring, MI_STORE_REGISTER_MEM(1) |
10655 MI_SRM_LRM_GLOBAL_GTT);
ffe74d75
CW		 10656 intel_ring_emit(ring, DERRMR);
10657 intel_ring_emit(ring, ring->scratch.gtt_offset + 256);
f476828a
DL		 10658 if (IS_GEN8(dev)) {
10659 intel_ring_emit(ring, 0);
10660 intel_ring_emit(ring, MI_NOOP);
10661 }
ffe74d75
CW		 10662 }
10663
cb05d8de 10664 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
01f2c773 10665 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
75f7f3ec 10666 intel_ring_emit(ring, intel_crtc->unpin_work->gtt_offset);
7c9017e5 10667 intel_ring_emit(ring, (MI_NOOP));
e7d841ca
CW		 10668
10669 intel_mark_page_flip_active(intel_crtc);
09246732 10670 __intel_ring_advance(ring);
83d4092b 10671 return 0;
7c9017e5
JB		 10672}
10673
84c33a64
SG		 10674static bool use_mmio_flip(struct intel_engine_cs *ring,
10675 struct drm_i915_gem_object *obj)
10676{
10677 /*
10678 * This is not being used for older platforms, because
10679 * non-availability of flip done interrupt forces us to use
10680 * CS flips. Older platforms derive flip done using some clever
10681 * tricks involving the flip_pending status bits and vblank irqs.
10682 * So using MMIO flips there would disrupt this mechanism.
10683 */
10684
8e09bf83
CW		 10685 if (ring == NULL)
10686 return true;
10687
84c33a64
SG		 10688 if (INTEL_INFO(ring->dev)->gen < 5)
10689 return false;
10690
10691 if (i915.use_mmio_flip < 0)
10692 return false;
10693 else if (i915.use_mmio_flip > 0)
10694 return true;
14bf993e
OM		 10695 else if (i915.enable_execlists)
10696 return true;
84c33a64 10697 else
41c52415 10698 return ring != i915_gem_request_get_ring(obj->last_read_req);
84c33a64
SG		 10699}
10700
ff944564
DL		 10701static void skl_do_mmio_flip(struct intel_crtc *intel_crtc)
10702{
10703 struct drm_device *dev = intel_crtc->base.dev;
10704 struct drm_i915_private *dev_priv = dev->dev_private;
10705 struct drm_framebuffer *fb = intel_crtc->base.primary->fb;
ff944564
DL		 10706 const enum pipe pipe = intel_crtc->pipe;
10707 u32 ctl, stride;
10708
10709 ctl = I915_READ(PLANE_CTL(pipe, 0));
10710 ctl &= ~PLANE_CTL_TILED_MASK;
2ebef630
TU		 10711 switch (fb->modifier[0]) {
10712 case DRM_FORMAT_MOD_NONE:
10713 break;
10714 case I915_FORMAT_MOD_X_TILED:
ff944564 10715 ctl |= PLANE_CTL_TILED_X;
2ebef630
TU		 10716 break;
10717 case I915_FORMAT_MOD_Y_TILED:
10718 ctl |= PLANE_CTL_TILED_Y;
10719 break;
10720 case I915_FORMAT_MOD_Yf_TILED:
10721 ctl |= PLANE_CTL_TILED_YF;
10722 break;
10723 default:
10724 MISSING_CASE(fb->modifier[0]);
10725 }
ff944564
DL		 10726
10727 /*
10728 * The stride is either expressed as a multiple of 64 bytes chunks for
10729 * linear buffers or in number of tiles for tiled buffers.
10730 */
2ebef630
TU		 10731 stride = fb->pitches[0] /
10732 intel_fb_stride_alignment(dev, fb->modifier[0],
10733 fb->pixel_format);
ff944564
DL		 10734
10735 /*
10736 * Both PLANE_CTL and PLANE_STRIDE are not updated on vblank but on
10737 * PLANE_SURF updates, the update is then guaranteed to be atomic.
10738 */
10739 I915_WRITE(PLANE_CTL(pipe, 0), ctl);
10740 I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
10741
10742 I915_WRITE(PLANE_SURF(pipe, 0), intel_crtc->unpin_work->gtt_offset);
10743 POSTING_READ(PLANE_SURF(pipe, 0));
10744}
10745
10746static void ilk_do_mmio_flip(struct intel_crtc *intel_crtc)
84c33a64
SG		 10747{
10748 struct drm_device *dev = intel_crtc->base.dev;
10749 struct drm_i915_private *dev_priv = dev->dev_private;
10750 struct intel_framebuffer *intel_fb =
10751 to_intel_framebuffer(intel_crtc->base.primary->fb);
10752 struct drm_i915_gem_object *obj = intel_fb->obj;
10753 u32 dspcntr;
10754 u32 reg;
10755
84c33a64
SG		 10756 reg = DSPCNTR(intel_crtc->plane);
10757 dspcntr = I915_READ(reg);
10758
c5d97472
DL		 10759 if (obj->tiling_mode != I915_TILING_NONE)
10760 dspcntr |= DISPPLANE_TILED;
10761 else
10762 dspcntr &= ~DISPPLANE_TILED;
10763
84c33a64
SG		 10764 I915_WRITE(reg, dspcntr);
10765
10766 I915_WRITE(DSPSURF(intel_crtc->plane),
10767 intel_crtc->unpin_work->gtt_offset);
10768 POSTING_READ(DSPSURF(intel_crtc->plane));
84c33a64 10769
ff944564
DL		 10770}
10771
10772/*
10773 * XXX: This is the temporary way to update the plane registers until we get
10774 * around to using the usual plane update functions for MMIO flips
10775 */
10776static void intel_do_mmio_flip(struct intel_crtc *intel_crtc)
10777{
10778 struct drm_device *dev = intel_crtc->base.dev;
10779 bool atomic_update;
10780 u32 start_vbl_count;
10781
10782 intel_mark_page_flip_active(intel_crtc);
10783
10784 atomic_update = intel_pipe_update_start(intel_crtc, &start_vbl_count);
10785
10786 if (INTEL_INFO(dev)->gen >= 9)
10787 skl_do_mmio_flip(intel_crtc);
10788 else
10789 /* use_mmio_flip() retricts MMIO flips to ilk+ */
10790 ilk_do_mmio_flip(intel_crtc);
10791
9362c7c5
ACO		 10792 if (atomic_update)
10793 intel_pipe_update_end(intel_crtc, start_vbl_count);
84c33a64
SG		 10794}
10795
9362c7c5 10796static void intel_mmio_flip_work_func(struct work_struct *work)
84c33a64 10797{
cc8c4cc2 10798 struct intel_crtc *crtc =
9362c7c5 10799 container_of(work, struct intel_crtc, mmio_flip.work);
cc8c4cc2 10800 struct intel_mmio_flip *mmio_flip;
84c33a64 10801
cc8c4cc2
JH		 10802 mmio_flip = &crtc->mmio_flip;
10803 if (mmio_flip->req)
9c654818
JH		 10804 WARN_ON(__i915_wait_request(mmio_flip->req,
10805 crtc->reset_counter,
10806 false, NULL, NULL) != 0);
84c33a64 10807
cc8c4cc2
JH		 10808 intel_do_mmio_flip(crtc);
10809 if (mmio_flip->req) {
10810 mutex_lock(&crtc->base.dev->struct_mutex);
146d84f0 10811 i915_gem_request_assign(&mmio_flip->req, NULL);
cc8c4cc2
JH		 10812 mutex_unlock(&crtc->base.dev->struct_mutex);
10813 }
84c33a64
SG		 10814}
10815
10816static int intel_queue_mmio_flip(struct drm_device *dev,
10817 struct drm_crtc *crtc,
10818 struct drm_framebuffer *fb,
10819 struct drm_i915_gem_object *obj,
10820 struct intel_engine_cs *ring,
10821 uint32_t flags)
10822{
84c33a64 10823 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
84c33a64 10824
cc8c4cc2
JH		 10825 i915_gem_request_assign(&intel_crtc->mmio_flip.req,
10826 obj->last_write_req);
536f5b5e
ACO		 10827
10828 schedule_work(&intel_crtc->mmio_flip.work);
84c33a64 10829
84c33a64
SG		 10830 return 0;
10831}
10832
8c9f3aaf
JB		 10833static int intel_default_queue_flip(struct drm_device *dev,
10834 struct drm_crtc *crtc,
10835 struct drm_framebuffer *fb,
ed8d1975 10836 struct drm_i915_gem_object *obj,
a4872ba6 10837 struct intel_engine_cs *ring,
ed8d1975 10838 uint32_t flags)
8c9f3aaf
JB		 10839{
10840 return -ENODEV;
10841}
10842
d6bbafa1
CW		 10843static bool __intel_pageflip_stall_check(struct drm_device *dev,
10844 struct drm_crtc *crtc)
10845{
10846 struct drm_i915_private *dev_priv = dev->dev_private;
10847 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
10848 struct intel_unpin_work *work = intel_crtc->unpin_work;
10849 u32 addr;
10850
10851 if (atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE)
10852 return true;
10853
10854 if (!work->enable_stall_check)
10855 return false;
10856
10857 if (work->flip_ready_vblank == 0) {
3a8a946e
DV		 10858 if (work->flip_queued_req &&
10859 !i915_gem_request_completed(work->flip_queued_req, true))
d6bbafa1
CW		 10860 return false;
10861
1e3feefd 10862 work->flip_ready_vblank = drm_crtc_vblank_count(crtc);
d6bbafa1
CW		 10863 }
10864
1e3feefd 10865 if (drm_crtc_vblank_count(crtc) - work->flip_ready_vblank < 3)
d6bbafa1
CW		 10866 return false;
10867
10868 /* Potential stall - if we see that the flip has happened,
10869 * assume a missed interrupt. */
10870 if (INTEL_INFO(dev)->gen >= 4)
10871 addr = I915_HI_DISPBASE(I915_READ(DSPSURF(intel_crtc->plane)));
10872 else
10873 addr = I915_READ(DSPADDR(intel_crtc->plane));
10874
10875 /* There is a potential issue here with a false positive after a flip
10876 * to the same address. We could address this by checking for a
10877 * non-incrementing frame counter.
10878 */
10879 return addr == work->gtt_offset;
10880}
10881
10882void intel_check_page_flip(struct drm_device *dev, int pipe)
10883{
10884 struct drm_i915_private *dev_priv = dev->dev_private;
10885 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
10886 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6ad790c0 10887 struct intel_unpin_work *work;
f326038a 10888
6c51d46f 10889 WARN_ON(!in_interrupt());
d6bbafa1
CW		 10890
10891 if (crtc == NULL)
10892 return;
10893
f326038a 10894 spin_lock(&dev->event_lock);
6ad790c0
CW		 10895 work = intel_crtc->unpin_work;
10896 if (work != NULL && __intel_pageflip_stall_check(dev, crtc)) {
d6bbafa1 10897 WARN_ONCE(1, "Kicking stuck page flip: queued at %d, now %d\n",
6ad790c0 10898 work->flip_queued_vblank, drm_vblank_count(dev, pipe));
d6bbafa1 10899 page_flip_completed(intel_crtc);
6ad790c0 10900 work = NULL;
d6bbafa1 10901 }
6ad790c0
CW		 10902 if (work != NULL &&
10903 drm_vblank_count(dev, pipe) - work->flip_queued_vblank > 1)
10904 intel_queue_rps_boost_for_request(dev, work->flip_queued_req);
f326038a 10905 spin_unlock(&dev->event_lock);
d6bbafa1
CW		 10906}
10907
6b95a207
KH		 10908static int intel_crtc_page_flip(struct drm_crtc *crtc,
10909 struct drm_framebuffer *fb,
ed8d1975
KP		 10910 struct drm_pending_vblank_event *event,
10911 uint32_t page_flip_flags)
6b95a207
KH		 10912{
10913 struct drm_device *dev = crtc->dev;
10914 struct drm_i915_private *dev_priv = dev->dev_private;
f4510a27 10915 struct drm_framebuffer *old_fb = crtc->primary->fb;
2ff8fde1 10916 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
6b95a207 10917 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
455a6808 10918 struct drm_plane *primary = crtc->primary;
a071fa00 10919 enum pipe pipe = intel_crtc->pipe;
6b95a207 10920 struct intel_unpin_work *work;
a4872ba6 10921 struct intel_engine_cs *ring;
cf5d8a46 10922 bool mmio_flip;
52e68630 10923 int ret;
6b95a207 10924
2ff8fde1
MR		 10925 /*
10926 * drm_mode_page_flip_ioctl() should already catch this, but double
10927 * check to be safe. In the future we may enable pageflipping from
10928 * a disabled primary plane.
10929 */
10930 if (WARN_ON(intel_fb_obj(old_fb) == NULL))
10931 return -EBUSY;
10932
e6a595d2 10933 /* Can't change pixel format via MI display flips. */
f4510a27 10934 if (fb->pixel_format != crtc->primary->fb->pixel_format)
e6a595d2
VS		 10935 return -EINVAL;
10936
10937 /*
10938 * TILEOFF/LINOFF registers can't be changed via MI display flips.
10939 * Note that pitch changes could also affect these register.
10940 */
10941 if (INTEL_INFO(dev)->gen > 3 &&
f4510a27
MR		 10942 (fb->offsets[0] != crtc->primary->fb->offsets[0] ||
10943 fb->pitches[0] != crtc->primary->fb->pitches[0]))
e6a595d2
VS		 10944 return -EINVAL;
10945
f900db47
CW		 10946 if (i915_terminally_wedged(&dev_priv->gpu_error))
10947 goto out_hang;
10948
b14c5679 10949 work = kzalloc(sizeof(*work), GFP_KERNEL);
6b95a207
KH		 10950 if (work == NULL)
10951 return -ENOMEM;
10952
6b95a207 10953 work->event = event;
b4a98e57 10954 work->crtc = crtc;
ab8d6675 10955 work->old_fb = old_fb;
6b95a207
KH		 10956 INIT_WORK(&work->work, intel_unpin_work_fn);
10957
87b6b101 10958 ret = drm_crtc_vblank_get(crtc);
7317c75e
JB		 10959 if (ret)
10960 goto free_work;
10961
6b95a207 10962 /* We borrow the event spin lock for protecting unpin_work */
5e2d7afc 10963 spin_lock_irq(&dev->event_lock);
6b95a207 10964 if (intel_crtc->unpin_work) {
d6bbafa1
CW		 10965 /* Before declaring the flip queue wedged, check if
10966 * the hardware completed the operation behind our backs.
10967 */
10968 if (__intel_pageflip_stall_check(dev, crtc)) {
10969 DRM_DEBUG_DRIVER("flip queue: previous flip completed, continuing\n");
10970 page_flip_completed(intel_crtc);
10971 } else {
10972 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
5e2d7afc 10973 spin_unlock_irq(&dev->event_lock);
468f0b44 10974
d6bbafa1
CW		 10975 drm_crtc_vblank_put(crtc);
10976 kfree(work);
10977 return -EBUSY;
10978 }
6b95a207
KH		 10979 }
10980 intel_crtc->unpin_work = work;
5e2d7afc 10981 spin_unlock_irq(&dev->event_lock);
6b95a207 10982
b4a98e57
CW		 10983 if (atomic_read(&intel_crtc->unpin_work_count) >= 2)
10984 flush_workqueue(dev_priv->wq);
10985
75dfca80 10986 /* Reference the objects for the scheduled work. */
ab8d6675 10987 drm_framebuffer_reference(work->old_fb);
05394f39 10988 drm_gem_object_reference(&obj->base);
6b95a207 10989
f4510a27 10990 crtc->primary->fb = fb;
afd65eb4 10991 update_state_fb(crtc->primary);
1ed1f968 10992
e1f99ce6 10993 work->pending_flip_obj = obj;
e1f99ce6 10994
89ed88ba
CW		 10995 ret = i915_mutex_lock_interruptible(dev);
10996 if (ret)
10997 goto cleanup;
10998
b4a98e57 10999 atomic_inc(&intel_crtc->unpin_work_count);
10d83730 11000 intel_crtc->reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter);
e1f99ce6 11001
75f7f3ec 11002 if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev))
a071fa00 11003 work->flip_count = I915_READ(PIPE_FLIPCOUNT_GM45(pipe)) + 1;
75f7f3ec 11004
4fa62c89
VS		 11005 if (IS_VALLEYVIEW(dev)) {
11006 ring = &dev_priv->ring[BCS];
ab8d6675 11007 if (obj->tiling_mode != intel_fb_obj(work->old_fb)->tiling_mode)
8e09bf83
CW		 11008 /* vlv: DISPLAY_FLIP fails to change tiling */
11009 ring = NULL;
48bf5b2d 11010 } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
2a92d5bc 11011 ring = &dev_priv->ring[BCS];
4fa62c89 11012 } else if (INTEL_INFO(dev)->gen >= 7) {
41c52415 11013 ring = i915_gem_request_get_ring(obj->last_read_req);
4fa62c89
VS		 11014 if (ring == NULL || ring->id != RCS)
11015 ring = &dev_priv->ring[BCS];
11016 } else {
11017 ring = &dev_priv->ring[RCS];
11018 }
11019
cf5d8a46
CW		 11020 mmio_flip = use_mmio_flip(ring, obj);
11021
11022 /* When using CS flips, we want to emit semaphores between rings.
11023 * However, when using mmio flips we will create a task to do the
11024 * synchronisation, so all we want here is to pin the framebuffer
11025 * into the display plane and skip any waits.
11026 */
82bc3b2d 11027 ret = intel_pin_and_fence_fb_obj(crtc->primary, fb,
cf5d8a46
CW		 11028 crtc->primary->state,
11029 mmio_flip ? i915_gem_request_get_ring(obj->last_read_req) : ring);
8c9f3aaf
JB		 11030 if (ret)
11031 goto cleanup_pending;
6b95a207 11032
121920fa
TU		 11033 work->gtt_offset = intel_plane_obj_offset(to_intel_plane(primary), obj)
11034 + intel_crtc->dspaddr_offset;
4fa62c89 11035
cf5d8a46 11036 if (mmio_flip) {
84c33a64
SG		 11037 ret = intel_queue_mmio_flip(dev, crtc, fb, obj, ring,
11038 page_flip_flags);
d6bbafa1
CW		 11039 if (ret)
11040 goto cleanup_unpin;
11041
f06cc1b9
JH		 11042 i915_gem_request_assign(&work->flip_queued_req,
11043 obj->last_write_req);
d6bbafa1 11044 } else {
84c33a64 11045 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj, ring,
d6bbafa1
CW		 11046 page_flip_flags);
11047 if (ret)
11048 goto cleanup_unpin;
11049
f06cc1b9
JH		 11050 i915_gem_request_assign(&work->flip_queued_req,
11051 intel_ring_get_request(ring));
d6bbafa1
CW		 11052 }
11053
1e3feefd 11054 work->flip_queued_vblank = drm_crtc_vblank_count(crtc);
d6bbafa1 11055 work->enable_stall_check = true;
4fa62c89 11056
ab8d6675 11057 i915_gem_track_fb(intel_fb_obj(work->old_fb), obj,
a071fa00
DV		 11058 INTEL_FRONTBUFFER_PRIMARY(pipe));
11059
7ff0ebcc 11060 intel_fbc_disable(dev);
f99d7069 11061 intel_frontbuffer_flip_prepare(dev, INTEL_FRONTBUFFER_PRIMARY(pipe));
6b95a207
KH		 11062 mutex_unlock(&dev->struct_mutex);
11063
e5510fac
JB		 11064 trace_i915_flip_request(intel_crtc->plane, obj);
11065
6b95a207 11066 return 0;
96b099fd 11067
4fa62c89 11068cleanup_unpin:
82bc3b2d 11069 intel_unpin_fb_obj(fb, crtc->primary->state);
8c9f3aaf 11070cleanup_pending:
b4a98e57 11071 atomic_dec(&intel_crtc->unpin_work_count);
89ed88ba
CW		 11072 mutex_unlock(&dev->struct_mutex);
11073cleanup:
f4510a27 11074 crtc->primary->fb = old_fb;
afd65eb4 11075 update_state_fb(crtc->primary);
89ed88ba
CW		 11076
11077 drm_gem_object_unreference_unlocked(&obj->base);
ab8d6675 11078 drm_framebuffer_unreference(work->old_fb);
96b099fd 11079
5e2d7afc 11080 spin_lock_irq(&dev->event_lock);
96b099fd 11081 intel_crtc->unpin_work = NULL;
5e2d7afc 11082 spin_unlock_irq(&dev->event_lock);
96b099fd 11083
87b6b101 11084 drm_crtc_vblank_put(crtc);
7317c75e 11085free_work:
96b099fd
CW		 11086 kfree(work);
11087
f900db47
CW		 11088 if (ret == -EIO) {
11089out_hang:
53a366b9 11090 ret = intel_plane_restore(primary);
f0d3dad3 11091 if (ret == 0 && event) {
5e2d7afc 11092 spin_lock_irq(&dev->event_lock);
a071fa00 11093 drm_send_vblank_event(dev, pipe, event);
5e2d7afc 11094 spin_unlock_irq(&dev->event_lock);
f0d3dad3 11095 }
f900db47 11096 }
96b099fd 11097 return ret;
6b95a207
KH		 11098}
11099
65b38e0d 11100static const struct drm_crtc_helper_funcs intel_helper_funcs = {
f6e5b160
CW		 11101 .mode_set_base_atomic = intel_pipe_set_base_atomic,
11102 .load_lut = intel_crtc_load_lut,
ea2c67bb
MR		 11103 .atomic_begin = intel_begin_crtc_commit,
11104 .atomic_flush = intel_finish_crtc_commit,
f6e5b160
CW		 11105};
11106
9a935856
DV		 11107/**
11108 * intel_modeset_update_staged_output_state
11109 *
11110 * Updates the staged output configuration state, e.g. after we've read out the
11111 * current hw state.
11112 */
11113static void intel_modeset_update_staged_output_state(struct drm_device *dev)
f6e5b160 11114{
7668851f 11115 struct intel_crtc *crtc;
9a935856
DV		 11116 struct intel_encoder *encoder;
11117 struct intel_connector *connector;
f6e5b160 11118
3a3371ff 11119 for_each_intel_connector(dev, connector) {
9a935856
DV		 11120 connector->new_encoder =
11121 to_intel_encoder(connector->base.encoder);
11122 }
f6e5b160 11123
b2784e15 11124 for_each_intel_encoder(dev, encoder) {
9a935856
DV		 11125 encoder->new_crtc =
11126 to_intel_crtc(encoder->base.crtc);
11127 }
7668851f 11128
d3fcc808 11129 for_each_intel_crtc(dev, crtc) {
83d65738 11130 crtc->new_enabled = crtc->base.state->enable;
7668851f 11131 }
f6e5b160
CW		 11132}
11133
d29b2f9d
ACO		 11134/* Transitional helper to copy current connector/encoder state to
11135 * connector->state. This is needed so that code that is partially
11136 * converted to atomic does the right thing.
11137 */
11138static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
11139{
11140 struct intel_connector *connector;
11141
11142 for_each_intel_connector(dev, connector) {
11143 if (connector->base.encoder) {
11144 connector->base.state->best_encoder =
11145 connector->base.encoder;
11146 connector->base.state->crtc =
11147 connector->base.encoder->crtc;
11148 } else {
11149 connector->base.state->best_encoder = NULL;
11150 connector->base.state->crtc = NULL;
11151 }
11152 }
11153}
11154
9a935856
DV		 11155/**
11156 * intel_modeset_commit_output_state
11157 *
11158 * This function copies the stage display pipe configuration to the real one.
d5432a9d
ACO		 11159 *
11160 * FIXME: we want to replace this with a proper state swap in the future
9a935856 11161 */
d5432a9d 11162static void intel_modeset_commit_output_state(struct drm_atomic_state *state)
9a935856 11163{
d5432a9d
ACO		 11164 struct drm_crtc *crtc;
11165 struct drm_crtc_state *crtc_state;
11166 struct drm_connector *connector;
11167 struct drm_connector_state *connector_state;
9a935856 11168 struct intel_encoder *encoder;
d5432a9d
ACO		 11169 struct intel_connector *intel_connector;
11170 int i;
f6e5b160 11171
d5432a9d
ACO		 11172 for_each_connector_in_state(state, connector, connector_state, i) {
11173 *connector->state = *connector_state;
11174
11175 connector->encoder = connector_state->best_encoder;
11176 if (connector->encoder)
11177 connector->encoder->crtc = connector_state->crtc;
9a935856 11178 }
f6e5b160 11179
d5432a9d
ACO		 11180 /* Update crtc of disabled encoders */
11181 for_each_intel_encoder(state->dev, encoder) {
11182 int num_connectors = 0;
11183
11184 for_each_intel_connector(state->dev, intel_connector)
11185 if (intel_connector->base.encoder == &encoder->base)
11186 num_connectors++;
11187
11188 if (num_connectors == 0)
11189 encoder->base.crtc = NULL;
9a935856 11190 }
7668851f 11191
d5432a9d
ACO		 11192 for_each_crtc_in_state(state, crtc, crtc_state, i) {
11193 crtc->state->enable = crtc_state->enable;
11194 crtc->enabled = crtc_state->enable;
7668851f 11195 }
d29b2f9d 11196
d5432a9d
ACO		 11197 /* Copy the new configuration to the staged state, to keep the few
11198 * pieces of code that haven't been converted yet happy */
11199 intel_modeset_update_staged_output_state(state->dev);
9a935856
DV		 11200}
11201
050f7aeb 11202static void
eba905b2 11203connected_sink_compute_bpp(struct intel_connector *connector,
5cec258b 11204 struct intel_crtc_state *pipe_config)
050f7aeb
DV		 11205{
11206 int bpp = pipe_config->pipe_bpp;
11207
11208 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
11209 connector->base.base.id,
c23cc417 11210 connector->base.name);
050f7aeb
DV		 11211
11212 /* Don't use an invalid EDID bpc value */
11213 if (connector->base.display_info.bpc &&
11214 connector->base.display_info.bpc * 3 < bpp) {
11215 DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
11216 bpp, connector->base.display_info.bpc*3);
11217 pipe_config->pipe_bpp = connector->base.display_info.bpc*3;
11218 }
11219
11220 /* Clamp bpp to 8 on screens without EDID 1.4 */
11221 if (connector->base.display_info.bpc == 0 && bpp > 24) {
11222 DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
11223 bpp);
11224 pipe_config->pipe_bpp = 24;
11225 }
11226}
11227
4e53c2e0 11228static int
050f7aeb 11229compute_baseline_pipe_bpp(struct intel_crtc *crtc,
5cec258b 11230 struct intel_crtc_state *pipe_config)
4e53c2e0 11231{
050f7aeb 11232 struct drm_device *dev = crtc->base.dev;
1486017f 11233 struct drm_atomic_state *state;
da3ced29
ACO		 11234 struct drm_connector *connector;
11235 struct drm_connector_state *connector_state;
1486017f 11236 int bpp, i;
4e53c2e0 11237
d328c9d7 11238 if ((IS_G4X(dev) || IS_VALLEYVIEW(dev)))
4e53c2e0 11239 bpp = 10*3;
d328c9d7
DV		 11240 else if (INTEL_INFO(dev)->gen >= 5)
11241 bpp = 12*3;
11242 else
11243 bpp = 8*3;
11244
4e53c2e0 11245
4e53c2e0
DV		 11246 pipe_config->pipe_bpp = bpp;
11247
1486017f
ACO		 11248 state = pipe_config->base.state;
11249
4e53c2e0 11250 /* Clamp display bpp to EDID value */
da3ced29
ACO		 11251 for_each_connector_in_state(state, connector, connector_state, i) {
11252 if (connector_state->crtc != &crtc->base)
4e53c2e0
DV		 11253 continue;
11254
da3ced29
ACO		 11255 connected_sink_compute_bpp(to_intel_connector(connector),
11256 pipe_config);
4e53c2e0
DV		 11257 }
11258
11259 return bpp;
11260}
11261
644db711
DV		 11262static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
11263{
11264 DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
11265 "type: 0x%x flags: 0x%x\n",
1342830c 11266 mode->crtc_clock,
644db711
DV		 11267 mode->crtc_hdisplay, mode->crtc_hsync_start,
11268 mode->crtc_hsync_end, mode->crtc_htotal,
11269 mode->crtc_vdisplay, mode->crtc_vsync_start,
11270 mode->crtc_vsync_end, mode->crtc_vtotal, mode->type, mode->flags);
11271}
11272
c0b03411 11273static void intel_dump_pipe_config(struct intel_crtc *crtc,
5cec258b 11274 struct intel_crtc_state *pipe_config,
c0b03411
DV		 11275 const char *context)
11276{
6a60cd87
CK		 11277 struct drm_device *dev = crtc->base.dev;
11278 struct drm_plane *plane;
11279 struct intel_plane *intel_plane;
11280 struct intel_plane_state *state;
11281 struct drm_framebuffer *fb;
11282
11283 DRM_DEBUG_KMS("[CRTC:%d]%s config %p for pipe %c\n", crtc->base.base.id,
11284 context, pipe_config, pipe_name(crtc->pipe));
c0b03411
DV		 11285
11286 DRM_DEBUG_KMS("cpu_transcoder: %c\n", transcoder_name(pipe_config->cpu_transcoder));
11287 DRM_DEBUG_KMS("pipe bpp: %i, dithering: %i\n",
11288 pipe_config->pipe_bpp, pipe_config->dither);
11289 DRM_DEBUG_KMS("fdi/pch: %i, lanes: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11290 pipe_config->has_pch_encoder,
11291 pipe_config->fdi_lanes,
11292 pipe_config->fdi_m_n.gmch_m, pipe_config->fdi_m_n.gmch_n,
11293 pipe_config->fdi_m_n.link_m, pipe_config->fdi_m_n.link_n,
11294 pipe_config->fdi_m_n.tu);
eb14cb74
VS		 11295 DRM_DEBUG_KMS("dp: %i, gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
11296 pipe_config->has_dp_encoder,
11297 pipe_config->dp_m_n.gmch_m, pipe_config->dp_m_n.gmch_n,
11298 pipe_config->dp_m_n.link_m, pipe_config->dp_m_n.link_n,
11299 pipe_config->dp_m_n.tu);
b95af8be
VK		 11300
11301 DRM_DEBUG_KMS("dp: %i, gmch_m2: %u, gmch_n2: %u, link_m2: %u, link_n2: %u, tu2: %u\n",
11302 pipe_config->has_dp_encoder,
11303 pipe_config->dp_m2_n2.gmch_m,
11304 pipe_config->dp_m2_n2.gmch_n,
11305 pipe_config->dp_m2_n2.link_m,
11306 pipe_config->dp_m2_n2.link_n,
11307 pipe_config->dp_m2_n2.tu);
11308
55072d19
DV		 11309 DRM_DEBUG_KMS("audio: %i, infoframes: %i\n",
11310 pipe_config->has_audio,
11311 pipe_config->has_infoframe);
11312
c0b03411 11313 DRM_DEBUG_KMS("requested mode:\n");
2d112de7 11314 drm_mode_debug_printmodeline(&pipe_config->base.mode);
c0b03411 11315 DRM_DEBUG_KMS("adjusted mode:\n");
2d112de7
ACO		 11316 drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
11317 intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
d71b8d4a 11318 DRM_DEBUG_KMS("port clock: %d\n", pipe_config->port_clock);
37327abd
VS		 11319 DRM_DEBUG_KMS("pipe src size: %dx%d\n",
11320 pipe_config->pipe_src_w, pipe_config->pipe_src_h);
6a60cd87
CK		 11321 DRM_DEBUG_KMS("num_scalers: %d\n", crtc->num_scalers);
11322 DRM_DEBUG_KMS("scaler_users: 0x%x\n", pipe_config->scaler_state.scaler_users);
11323 DRM_DEBUG_KMS("scaler id: %d\n", pipe_config->scaler_state.scaler_id);
c0b03411
DV		 11324 DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
11325 pipe_config->gmch_pfit.control,
11326 pipe_config->gmch_pfit.pgm_ratios,
11327 pipe_config->gmch_pfit.lvds_border_bits);
fd4daa9c 11328 DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s\n",
c0b03411 11329 pipe_config->pch_pfit.pos,
fd4daa9c
CW		 11330 pipe_config->pch_pfit.size,
11331 pipe_config->pch_pfit.enabled ? "enabled" : "disabled");
42db64ef 11332 DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
cf532bb2 11333 DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
6a60cd87
CK		 11334
11335 DRM_DEBUG_KMS("planes on this crtc\n");
11336 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
11337 intel_plane = to_intel_plane(plane);
11338 if (intel_plane->pipe != crtc->pipe)
11339 continue;
11340
11341 state = to_intel_plane_state(plane->state);
11342 fb = state->base.fb;
11343 if (!fb) {
11344 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d "
11345 "disabled, scaler_id = %d\n",
11346 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
11347 plane->base.id, intel_plane->pipe,
11348 (crtc->base.primary == plane) ? 0 : intel_plane->plane + 1,
11349 drm_plane_index(plane), state->scaler_id);
11350 continue;
11351 }
11352
11353 DRM_DEBUG_KMS("%s PLANE:%d plane: %u.%u idx: %d enabled",
11354 plane->type == DRM_PLANE_TYPE_CURSOR ? "CURSOR" : "STANDARD",
11355 plane->base.id, intel_plane->pipe,
11356 crtc->base.primary == plane ? 0 : intel_plane->plane + 1,
11357 drm_plane_index(plane));
11358 DRM_DEBUG_KMS("\tFB:%d, fb = %ux%u format = 0x%x",
11359 fb->base.id, fb->width, fb->height, fb->pixel_format);
11360 DRM_DEBUG_KMS("\tscaler:%d src (%u, %u) %ux%u dst (%u, %u) %ux%u\n",
11361 state->scaler_id,
11362 state->src.x1 >> 16, state->src.y1 >> 16,
11363 drm_rect_width(&state->src) >> 16,
11364 drm_rect_height(&state->src) >> 16,
11365 state->dst.x1, state->dst.y1,
11366 drm_rect_width(&state->dst), drm_rect_height(&state->dst));
11367 }
c0b03411
DV		 11368}
11369
bc079e8b
VS		 11370static bool encoders_cloneable(const struct intel_encoder *a,
11371 const struct intel_encoder *b)
accfc0c5 11372{
bc079e8b
VS		 11373 /* masks could be asymmetric, so check both ways */
11374 return a == b || (a->cloneable & (1 << b->type) &&
11375 b->cloneable & (1 << a->type));
11376}
11377
98a221da
ACO		 11378static bool check_single_encoder_cloning(struct drm_atomic_state *state,
11379 struct intel_crtc *crtc,
bc079e8b
VS		 11380 struct intel_encoder *encoder)
11381{
bc079e8b 11382 struct intel_encoder *source_encoder;
da3ced29 11383 struct drm_connector *connector;
98a221da
ACO		 11384 struct drm_connector_state *connector_state;
11385 int i;
bc079e8b 11386
da3ced29 11387 for_each_connector_in_state(state, connector, connector_state, i) {
98a221da 11388 if (connector_state->crtc != &crtc->base)
bc079e8b
VS		 11389 continue;
11390
98a221da
ACO		 11391 source_encoder =
11392 to_intel_encoder(connector_state->best_encoder);
bc079e8b
VS		 11393 if (!encoders_cloneable(encoder, source_encoder))
11394 return false;
11395 }
11396
11397 return true;
11398}
11399
98a221da
ACO		 11400static bool check_encoder_cloning(struct drm_atomic_state *state,
11401 struct intel_crtc *crtc)
bc079e8b 11402{
accfc0c5 11403 struct intel_encoder *encoder;
da3ced29 11404 struct drm_connector *connector;
98a221da
ACO		 11405 struct drm_connector_state *connector_state;
11406 int i;
accfc0c5 11407
da3ced29 11408 for_each_connector_in_state(state, connector, connector_state, i) {
98a221da
ACO		 11409 if (connector_state->crtc != &crtc->base)
11410 continue;
11411
11412 encoder = to_intel_encoder(connector_state->best_encoder);
11413 if (!check_single_encoder_cloning(state, crtc, encoder))
bc079e8b 11414 return false;
accfc0c5
DV		 11415 }
11416
bc079e8b 11417 return true;
accfc0c5
DV		 11418}
11419
5448a00d 11420static bool check_digital_port_conflicts(struct drm_atomic_state *state)
00f0b378 11421{
5448a00d
ACO		 11422 struct drm_device *dev = state->dev;
11423 struct intel_encoder *encoder;
da3ced29 11424 struct drm_connector *connector;
5448a00d 11425 struct drm_connector_state *connector_state;
00f0b378 11426 unsigned int used_ports = 0;
5448a00d 11427 int i;
00f0b378
VS		 11428
11429 /*
11430 * Walk the connector list instead of the encoder
11431 * list to detect the problem on ddi platforms
11432 * where there's just one encoder per digital port.
11433 */
da3ced29 11434 for_each_connector_in_state(state, connector, connector_state, i) {
5448a00d 11435 if (!connector_state->best_encoder)
00f0b378
VS		 11436 continue;
11437
5448a00d
ACO		 11438 encoder = to_intel_encoder(connector_state->best_encoder);
11439
11440 WARN_ON(!connector_state->crtc);
00f0b378
VS		 11441
11442 switch (encoder->type) {
11443 unsigned int port_mask;
11444 case INTEL_OUTPUT_UNKNOWN:
11445 if (WARN_ON(!HAS_DDI(dev)))
11446 break;
11447 case INTEL_OUTPUT_DISPLAYPORT:
11448 case INTEL_OUTPUT_HDMI:
11449 case INTEL_OUTPUT_EDP:
11450 port_mask = 1 << enc_to_dig_port(&encoder->base)->port;
11451
11452 /* the same port mustn't appear more than once */
11453 if (used_ports & port_mask)
11454 return false;
11455
11456 used_ports |= port_mask;
11457 default:
11458 break;
11459 }
11460 }
11461
11462 return true;
11463}
11464
83a57153
ACO		 11465static void
11466clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
11467{
11468 struct drm_crtc_state tmp_state;
663a3640 11469 struct intel_crtc_scaler_state scaler_state;
83a57153 11470
663a3640 11471 /* Clear only the intel specific part of the crtc state excluding scalers */
83a57153 11472 tmp_state = crtc_state->base;
663a3640 11473 scaler_state = crtc_state->scaler_state;
83a57153
ACO		 11474 memset(crtc_state, 0, sizeof *crtc_state);
11475 crtc_state->base = tmp_state;
663a3640 11476 crtc_state->scaler_state = scaler_state;
83a57153
ACO		 11477}
11478
548ee15b 11479static int
b8cecdf5 11480intel_modeset_pipe_config(struct drm_crtc *crtc,
548ee15b
ACO		 11481 struct drm_atomic_state *state,
11482 struct intel_crtc_state *pipe_config)
ee7b9f93 11483{
7758a113 11484 struct intel_encoder *encoder;
da3ced29 11485 struct drm_connector *connector;
0b901879 11486 struct drm_connector_state *connector_state;
d328c9d7 11487 int base_bpp, ret = -EINVAL;
0b901879 11488 int i;
e29c22c0 11489 bool retry = true;
ee7b9f93 11490
98a221da 11491 if (!check_encoder_cloning(state, to_intel_crtc(crtc))) {
accfc0c5 11492 DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
548ee15b 11493 return -EINVAL;
accfc0c5
DV		 11494 }
11495
5448a00d 11496 if (!check_digital_port_conflicts(state)) {
00f0b378 11497 DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
548ee15b 11498 return -EINVAL;
00f0b378
VS		 11499 }
11500
83a57153 11501 clear_intel_crtc_state(pipe_config);
7758a113 11502
e143a21c
DV		 11503 pipe_config->cpu_transcoder =
11504 (enum transcoder) to_intel_crtc(crtc)->pipe;
c0d43d62 11505 pipe_config->shared_dpll = DPLL_ID_PRIVATE;
b8cecdf5 11506
2960bc9c
ID		 11507 /*
11508 * Sanitize sync polarity flags based on requested ones. If neither
11509 * positive or negative polarity is requested, treat this as meaning
11510 * negative polarity.
11511 */
2d112de7 11512 if (!(pipe_config->base.adjusted_mode.flags &
2960bc9c 11513 (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
2d112de7 11514 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
2960bc9c 11515
2d112de7 11516 if (!(pipe_config->base.adjusted_mode.flags &
2960bc9c 11517 (DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
2d112de7 11518 pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
2960bc9c 11519
050f7aeb
DV		 11520 /* Compute a starting value for pipe_config->pipe_bpp taking the source
11521 * plane pixel format and any sink constraints into account. Returns the
11522 * source plane bpp so that dithering can be selected on mismatches
11523 * after encoders and crtc also have had their say. */
d328c9d7
DV		 11524 base_bpp = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
11525 pipe_config);
11526 if (base_bpp < 0)
4e53c2e0
DV		 11527 goto fail;
11528
e41a56be
VS		 11529 /*
11530 * Determine the real pipe dimensions. Note that stereo modes can
11531 * increase the actual pipe size due to the frame doubling and
11532 * insertion of additional space for blanks between the frame. This
11533 * is stored in the crtc timings. We use the requested mode to do this
11534 * computation to clearly distinguish it from the adjusted mode, which
11535 * can be changed by the connectors in the below retry loop.
11536 */
2d112de7 11537 drm_crtc_get_hv_timing(&pipe_config->base.mode,
ecb7e16b
GP		 11538 &pipe_config->pipe_src_w,
11539 &pipe_config->pipe_src_h);
e41a56be 11540
e29c22c0 11541encoder_retry:
ef1b460d 11542 /* Ensure the port clock defaults are reset when retrying. */
ff9a6750 11543 pipe_config->port_clock = 0;
ef1b460d 11544 pipe_config->pixel_multiplier = 1;
ff9a6750 11545
135c81b8 11546 /* Fill in default crtc timings, allow encoders to overwrite them. */
2d112de7
ACO		 11547 drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
11548 CRTC_STEREO_DOUBLE);
135c81b8 11549
7758a113
DV		 11550 /* Pass our mode to the connectors and the CRTC to give them a chance to
11551 * adjust it according to limitations or connector properties, and also
11552 * a chance to reject the mode entirely.
47f1c6c9 11553 */
da3ced29 11554 for_each_connector_in_state(state, connector, connector_state, i) {
0b901879 11555 if (connector_state->crtc != crtc)
7758a113 11556 continue;
7ae89233 11557
0b901879
ACO		 11558 encoder = to_intel_encoder(connector_state->best_encoder);
11559
efea6e8e
DV		 11560 if (!(encoder->compute_config(encoder, pipe_config))) {
11561 DRM_DEBUG_KMS("Encoder config failure\n");
7758a113
DV		 11562 goto fail;
11563 }
ee7b9f93 11564 }
47f1c6c9 11565
ff9a6750
DV		 11566 /* Set default port clock if not overwritten by the encoder. Needs to be
11567 * done afterwards in case the encoder adjusts the mode. */
11568 if (!pipe_config->port_clock)
2d112de7 11569 pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
241bfc38 11570 * pipe_config->pixel_multiplier;
ff9a6750 11571
a43f6e0f 11572 ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
e29c22c0 11573 if (ret < 0) {
7758a113
DV		 11574 DRM_DEBUG_KMS("CRTC fixup failed\n");
11575 goto fail;
ee7b9f93 11576 }
e29c22c0
DV		 11577
11578 if (ret == RETRY) {
11579 if (WARN(!retry, "loop in pipe configuration computation\n")) {
11580 ret = -EINVAL;
11581 goto fail;
11582 }
11583
11584 DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
11585 retry = false;
11586 goto encoder_retry;
11587 }
11588
d328c9d7 11589 pipe_config->dither = pipe_config->pipe_bpp != base_bpp;
4e53c2e0 11590 DRM_DEBUG_KMS("plane bpp: %i, pipe bpp: %i, dithering: %i\n",
d328c9d7 11591 base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
4e53c2e0 11592
548ee15b 11593 return 0;
7758a113 11594fail:
548ee15b 11595 return ret;
ee7b9f93 11596}
47f1c6c9 11597
ea9d758d 11598static bool intel_crtc_in_use(struct drm_crtc *crtc)
f6e5b160 11599{
ea9d758d 11600 struct drm_encoder *encoder;
f6e5b160 11601 struct drm_device *dev = crtc->dev;
f6e5b160 11602
ea9d758d
DV		 11603 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
11604 if (encoder->crtc == crtc)
11605 return true;
11606
11607 return false;
11608}
11609
0a9ab303
ACO		 11610static bool
11611needs_modeset(struct drm_crtc_state *state)
11612{
11613 return state->mode_changed || state->active_changed;
11614}
11615
ea9d758d 11616static void
0a9ab303 11617intel_modeset_update_state(struct drm_atomic_state *state)
ea9d758d 11618{
0a9ab303 11619 struct drm_device *dev = state->dev;
ba41c0de 11620 struct drm_i915_private *dev_priv = dev->dev_private;
ea9d758d 11621 struct intel_encoder *intel_encoder;
0a9ab303
ACO		 11622 struct drm_crtc *crtc;
11623 struct drm_crtc_state *crtc_state;
ea9d758d 11624 struct drm_connector *connector;
0a9ab303 11625 int i;
ea9d758d 11626
ba41c0de
DV		 11627 intel_shared_dpll_commit(dev_priv);
11628
b2784e15 11629 for_each_intel_encoder(dev, intel_encoder) {
ea9d758d
DV		 11630 if (!intel_encoder->base.crtc)
11631 continue;
11632
0a9ab303
ACO		 11633 for_each_crtc_in_state(state, crtc, crtc_state, i)
11634 if (crtc == intel_encoder->base.crtc)
11635 break;
11636
11637 if (crtc != intel_encoder->base.crtc)
11638 continue;
ea9d758d 11639
0a9ab303 11640 if (crtc_state->enable && needs_modeset(crtc_state))
ea9d758d
DV		 11641 intel_encoder->connectors_active = false;
11642 }
11643
d5432a9d 11644 intel_modeset_commit_output_state(state);
ea9d758d 11645
7668851f 11646 /* Double check state. */
0a9ab303
ACO		 11647 for_each_crtc(dev, crtc) {
11648 WARN_ON(crtc->state->enable != intel_crtc_in_use(crtc));
ea9d758d
DV		 11649 }
11650
11651 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
11652 if (!connector->encoder || !connector->encoder->crtc)
11653 continue;
11654
0a9ab303
ACO		 11655 for_each_crtc_in_state(state, crtc, crtc_state, i)
11656 if (crtc == connector->encoder->crtc)
11657 break;
11658
11659 if (crtc != connector->encoder->crtc)
11660 continue;
ea9d758d 11661
0a9ab303 11662 if (crtc_state->enable && needs_modeset(crtc_state)) {
68d34720
DV		 11663 struct drm_property *dpms_property =
11664 dev->mode_config.dpms_property;
11665
ea9d758d 11666 connector->dpms = DRM_MODE_DPMS_ON;
662595df 11667 drm_object_property_set_value(&connector->base,
68d34720
DV		 11668 dpms_property,
11669 DRM_MODE_DPMS_ON);
ea9d758d
DV		 11670
11671 intel_encoder = to_intel_encoder(connector->encoder);
11672 intel_encoder->connectors_active = true;
11673 }
11674 }
11675
11676}
11677
3bd26263 11678static bool intel_fuzzy_clock_check(int clock1, int clock2)
f1f644dc 11679{
3bd26263 11680 int diff;
f1f644dc
JB		 11681
11682 if (clock1 == clock2)
11683 return true;
11684
11685 if (!clock1 || !clock2)
11686 return false;
11687
11688 diff = abs(clock1 - clock2);
11689
11690 if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
11691 return true;
11692
11693 return false;
11694}
11695
25c5b266
DV		 11696#define for_each_intel_crtc_masked(dev, mask, intel_crtc) \
11697 list_for_each_entry((intel_crtc), \
11698 &(dev)->mode_config.crtc_list, \
11699 base.head) \
0973f18f 11700 if (mask & (1 <<(intel_crtc)->pipe))
25c5b266 11701
0e8ffe1b 11702static bool
2fa2fe9a 11703intel_pipe_config_compare(struct drm_device *dev,
5cec258b
ACO		 11704 struct intel_crtc_state *current_config,
11705 struct intel_crtc_state *pipe_config)
0e8ffe1b 11706{
66e985c0
DV		 11707#define PIPE_CONF_CHECK_X(name) \
11708 if (current_config->name != pipe_config->name) { \
11709 DRM_ERROR("mismatch in " #name " " \
11710 "(expected 0x%08x, found 0x%08x)\n", \
11711 current_config->name, \
11712 pipe_config->name); \
11713 return false; \
11714 }
11715
08a24034
DV		 11716#define PIPE_CONF_CHECK_I(name) \
11717 if (current_config->name != pipe_config->name) { \
11718 DRM_ERROR("mismatch in " #name " " \
11719 "(expected %i, found %i)\n", \
11720 current_config->name, \
11721 pipe_config->name); \
11722 return false; \
88adfff1
DV		 11723 }
11724
b95af8be
VK		 11725/* This is required for BDW+ where there is only one set of registers for
11726 * switching between high and low RR.
11727 * This macro can be used whenever a comparison has to be made between one
11728 * hw state and multiple sw state variables.
11729 */
11730#define PIPE_CONF_CHECK_I_ALT(name, alt_name) \
11731 if ((current_config->name != pipe_config->name) && \
11732 (current_config->alt_name != pipe_config->name)) { \
11733 DRM_ERROR("mismatch in " #name " " \
11734 "(expected %i or %i, found %i)\n", \
11735 current_config->name, \
11736 current_config->alt_name, \
11737 pipe_config->name); \
11738 return false; \
11739 }
11740
1bd1bd80
DV		 11741#define PIPE_CONF_CHECK_FLAGS(name, mask) \
11742 if ((current_config->name ^ pipe_config->name) & (mask)) { \
6f02488e 11743 DRM_ERROR("mismatch in " #name "(" #mask ") " \
1bd1bd80
DV		 11744 "(expected %i, found %i)\n", \
11745 current_config->name & (mask), \
11746 pipe_config->name & (mask)); \
11747 return false; \
11748 }
11749
5e550656
VS		 11750#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) \
11751 if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
11752 DRM_ERROR("mismatch in " #name " " \
11753 "(expected %i, found %i)\n", \
11754 current_config->name, \
11755 pipe_config->name); \
11756 return false; \
11757 }
11758
bb760063
DV		 11759#define PIPE_CONF_QUIRK(quirk) \
11760 ((current_config->quirks | pipe_config->quirks) & (quirk))
11761
eccb140b
DV		 11762 PIPE_CONF_CHECK_I(cpu_transcoder);
11763
08a24034
DV		 11764 PIPE_CONF_CHECK_I(has_pch_encoder);
11765 PIPE_CONF_CHECK_I(fdi_lanes);
72419203
DV		 11766 PIPE_CONF_CHECK_I(fdi_m_n.gmch_m);
11767 PIPE_CONF_CHECK_I(fdi_m_n.gmch_n);
11768 PIPE_CONF_CHECK_I(fdi_m_n.link_m);
11769 PIPE_CONF_CHECK_I(fdi_m_n.link_n);
11770 PIPE_CONF_CHECK_I(fdi_m_n.tu);
08a24034 11771
eb14cb74 11772 PIPE_CONF_CHECK_I(has_dp_encoder);
b95af8be
VK		 11773
11774 if (INTEL_INFO(dev)->gen < 8) {
11775 PIPE_CONF_CHECK_I(dp_m_n.gmch_m);
11776 PIPE_CONF_CHECK_I(dp_m_n.gmch_n);
11777 PIPE_CONF_CHECK_I(dp_m_n.link_m);
11778 PIPE_CONF_CHECK_I(dp_m_n.link_n);
11779 PIPE_CONF_CHECK_I(dp_m_n.tu);
11780
11781 if (current_config->has_drrs) {
11782 PIPE_CONF_CHECK_I(dp_m2_n2.gmch_m);
11783 PIPE_CONF_CHECK_I(dp_m2_n2.gmch_n);
11784 PIPE_CONF_CHECK_I(dp_m2_n2.link_m);
11785 PIPE_CONF_CHECK_I(dp_m2_n2.link_n);
11786 PIPE_CONF_CHECK_I(dp_m2_n2.tu);
11787 }
11788 } else {
11789 PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_m, dp_m2_n2.gmch_m);
11790 PIPE_CONF_CHECK_I_ALT(dp_m_n.gmch_n, dp_m2_n2.gmch_n);
11791 PIPE_CONF_CHECK_I_ALT(dp_m_n.link_m, dp_m2_n2.link_m);
11792 PIPE_CONF_CHECK_I_ALT(dp_m_n.link_n, dp_m2_n2.link_n);
11793 PIPE_CONF_CHECK_I_ALT(dp_m_n.tu, dp_m2_n2.tu);
11794 }
eb14cb74 11795
2d112de7
ACO		 11796 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
11797 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
11798 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
11799 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
11800 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
11801 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
1bd1bd80 11802
2d112de7
ACO		 11803 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
11804 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
11805 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
11806 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
11807 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
11808 PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
1bd1bd80 11809
c93f54cf 11810 PIPE_CONF_CHECK_I(pixel_multiplier);
6897b4b5 11811 PIPE_CONF_CHECK_I(has_hdmi_sink);
b5a9fa09
DV		 11812 if ((INTEL_INFO(dev)->gen < 8 && !IS_HASWELL(dev)) ||
11813 IS_VALLEYVIEW(dev))
11814 PIPE_CONF_CHECK_I(limited_color_range);
e43823ec 11815 PIPE_CONF_CHECK_I(has_infoframe);
6c49f241 11816
9ed109a7
DV		 11817 PIPE_CONF_CHECK_I(has_audio);
11818
2d112de7 11819 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
1bd1bd80
DV		 11820 DRM_MODE_FLAG_INTERLACE);
11821
bb760063 11822 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
2d112de7 11823 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
bb760063 11824 DRM_MODE_FLAG_PHSYNC);
2d112de7 11825 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
bb760063 11826 DRM_MODE_FLAG_NHSYNC);
2d112de7 11827 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
bb760063 11828 DRM_MODE_FLAG_PVSYNC);
2d112de7 11829 PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
bb760063
DV		 11830 DRM_MODE_FLAG_NVSYNC);
11831 }
045ac3b5 11832
37327abd
VS		 11833 PIPE_CONF_CHECK_I(pipe_src_w);
11834 PIPE_CONF_CHECK_I(pipe_src_h);
1bd1bd80 11835
9953599b
DV		 11836 /*
11837 * FIXME: BIOS likes to set up a cloned config with lvds+external
11838 * screen. Since we don't yet re-compute the pipe config when moving
11839 * just the lvds port away to another pipe the sw tracking won't match.
11840 *
11841 * Proper atomic modesets with recomputed global state will fix this.
11842 * Until then just don't check gmch state for inherited modes.
11843 */
11844 if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_INHERITED_MODE)) {
11845 PIPE_CONF_CHECK_I(gmch_pfit.control);
11846 /* pfit ratios are autocomputed by the hw on gen4+ */
11847 if (INTEL_INFO(dev)->gen < 4)
11848 PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios);
11849 PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits);
11850 }
11851
fd4daa9c
CW		 11852 PIPE_CONF_CHECK_I(pch_pfit.enabled);
11853 if (current_config->pch_pfit.enabled) {
11854 PIPE_CONF_CHECK_I(pch_pfit.pos);
11855 PIPE_CONF_CHECK_I(pch_pfit.size);
11856 }
2fa2fe9a 11857
a1b2278e
CK		 11858 PIPE_CONF_CHECK_I(scaler_state.scaler_id);
11859
e59150dc
JB		 11860 /* BDW+ don't expose a synchronous way to read the state */
11861 if (IS_HASWELL(dev))
11862 PIPE_CONF_CHECK_I(ips_enabled);
42db64ef 11863
282740f7
VS		 11864 PIPE_CONF_CHECK_I(double_wide);
11865
26804afd
DV		 11866 PIPE_CONF_CHECK_X(ddi_pll_sel);
11867
c0d43d62 11868 PIPE_CONF_CHECK_I(shared_dpll);
66e985c0 11869 PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
8bcc2795 11870 PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
66e985c0
DV		 11871 PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
11872 PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
d452c5b6 11873 PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
3f4cd19f
DL		 11874 PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
11875 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
11876 PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
c0d43d62 11877
42571aef
VS		 11878 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
11879 PIPE_CONF_CHECK_I(pipe_bpp);
11880
2d112de7 11881 PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
a9a7e98a 11882 PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
5e550656 11883
66e985c0 11884#undef PIPE_CONF_CHECK_X
08a24034 11885#undef PIPE_CONF_CHECK_I
b95af8be 11886#undef PIPE_CONF_CHECK_I_ALT
1bd1bd80 11887#undef PIPE_CONF_CHECK_FLAGS
5e550656 11888#undef PIPE_CONF_CHECK_CLOCK_FUZZY
bb760063 11889#undef PIPE_CONF_QUIRK
88adfff1 11890
0e8ffe1b
DV		 11891 return true;
11892}
11893
08db6652
DL		 11894static void check_wm_state(struct drm_device *dev)
11895{
11896 struct drm_i915_private *dev_priv = dev->dev_private;
11897 struct skl_ddb_allocation hw_ddb, *sw_ddb;
11898 struct intel_crtc *intel_crtc;
11899 int plane;
11900
11901 if (INTEL_INFO(dev)->gen < 9)
11902 return;
11903
11904 skl_ddb_get_hw_state(dev_priv, &hw_ddb);
11905 sw_ddb = &dev_priv->wm.skl_hw.ddb;
11906
11907 for_each_intel_crtc(dev, intel_crtc) {
11908 struct skl_ddb_entry *hw_entry, *sw_entry;
11909 const enum pipe pipe = intel_crtc->pipe;
11910
11911 if (!intel_crtc->active)
11912 continue;
11913
11914 /* planes */
dd740780 11915 for_each_plane(dev_priv, pipe, plane) {
08db6652
DL		 11916 hw_entry = &hw_ddb.plane[pipe][plane];
11917 sw_entry = &sw_ddb->plane[pipe][plane];
11918
11919 if (skl_ddb_entry_equal(hw_entry, sw_entry))
11920 continue;
11921
11922 DRM_ERROR("mismatch in DDB state pipe %c plane %d "
11923 "(expected (%u,%u), found (%u,%u))\n",
11924 pipe_name(pipe), plane + 1,
11925 sw_entry->start, sw_entry->end,
11926 hw_entry->start, hw_entry->end);
11927 }
11928
11929 /* cursor */
11930 hw_entry = &hw_ddb.cursor[pipe];
11931 sw_entry = &sw_ddb->cursor[pipe];
11932
11933 if (skl_ddb_entry_equal(hw_entry, sw_entry))
11934 continue;
11935
11936 DRM_ERROR("mismatch in DDB state pipe %c cursor "
11937 "(expected (%u,%u), found (%u,%u))\n",
11938 pipe_name(pipe),
11939 sw_entry->start, sw_entry->end,
11940 hw_entry->start, hw_entry->end);
11941 }
11942}
11943
91d1b4bd
DV		 11944static void
11945check_connector_state(struct drm_device *dev)
8af6cf88 11946{
8af6cf88
DV		 11947 struct intel_connector *connector;
11948
3a3371ff 11949 for_each_intel_connector(dev, connector) {
8af6cf88
DV		 11950 /* This also checks the encoder/connector hw state with the
11951 * ->get_hw_state callbacks. */
11952 intel_connector_check_state(connector);
11953
e2c719b7 11954 I915_STATE_WARN(&connector->new_encoder->base != connector->base.encoder,
8af6cf88
DV		 11955 "connector's staged encoder doesn't match current encoder\n");
11956 }
91d1b4bd
DV		 11957}
11958
11959static void
11960check_encoder_state(struct drm_device *dev)
11961{
11962 struct intel_encoder *encoder;
11963 struct intel_connector *connector;
8af6cf88 11964
b2784e15 11965 for_each_intel_encoder(dev, encoder) {
8af6cf88
DV		 11966 bool enabled = false;
11967 bool active = false;
11968 enum pipe pipe, tracked_pipe;
11969
11970 DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
11971 encoder->base.base.id,
8e329a03 11972 encoder->base.name);
8af6cf88 11973
e2c719b7 11974 I915_STATE_WARN(&encoder->new_crtc->base != encoder->base.crtc,
8af6cf88 11975 "encoder's stage crtc doesn't match current crtc\n");
e2c719b7 11976 I915_STATE_WARN(encoder->connectors_active && !encoder->base.crtc,
8af6cf88
DV		 11977 "encoder's active_connectors set, but no crtc\n");
11978
3a3371ff 11979 for_each_intel_connector(dev, connector) {
8af6cf88
DV		 11980 if (connector->base.encoder != &encoder->base)
11981 continue;
11982 enabled = true;
11983 if (connector->base.dpms != DRM_MODE_DPMS_OFF)
11984 active = true;
11985 }
0e32b39c
DA		 11986 /*
11987 * for MST connectors if we unplug the connector is gone
11988 * away but the encoder is still connected to a crtc
11989 * until a modeset happens in response to the hotplug.
11990 */
11991 if (!enabled && encoder->base.encoder_type == DRM_MODE_ENCODER_DPMST)
11992 continue;
11993
e2c719b7 11994 I915_STATE_WARN(!!encoder->base.crtc != enabled,
8af6cf88
DV		 11995 "encoder's enabled state mismatch "
11996 "(expected %i, found %i)\n",
11997 !!encoder->base.crtc, enabled);
e2c719b7 11998 I915_STATE_WARN(active && !encoder->base.crtc,
8af6cf88
DV		 11999 "active encoder with no crtc\n");
12000
e2c719b7 12001 I915_STATE_WARN(encoder->connectors_active != active,
8af6cf88
DV		 12002 "encoder's computed active state doesn't match tracked active state "
12003 "(expected %i, found %i)\n", active, encoder->connectors_active);
12004
12005 active = encoder->get_hw_state(encoder, &pipe);
e2c719b7 12006 I915_STATE_WARN(active != encoder->connectors_active,
8af6cf88
DV		 12007 "encoder's hw state doesn't match sw tracking "
12008 "(expected %i, found %i)\n",
12009 encoder->connectors_active, active);
12010
12011 if (!encoder->base.crtc)
12012 continue;
12013
12014 tracked_pipe = to_intel_crtc(encoder->base.crtc)->pipe;
e2c719b7 12015 I915_STATE_WARN(active && pipe != tracked_pipe,
8af6cf88
DV		 12016 "active encoder's pipe doesn't match"
12017 "(expected %i, found %i)\n",
12018 tracked_pipe, pipe);
12019
12020 }
91d1b4bd
DV		 12021}
12022
12023static void
12024check_crtc_state(struct drm_device *dev)
12025{
fbee40df 12026 struct drm_i915_private *dev_priv = dev->dev_private;
91d1b4bd
DV		 12027 struct intel_crtc *crtc;
12028 struct intel_encoder *encoder;
5cec258b 12029 struct intel_crtc_state pipe_config;
8af6cf88 12030
d3fcc808 12031 for_each_intel_crtc(dev, crtc) {
8af6cf88
DV		 12032 bool enabled = false;
12033 bool active = false;
12034
045ac3b5
JB		 12035 memset(&pipe_config, 0, sizeof(pipe_config));
12036
8af6cf88
DV		 12037 DRM_DEBUG_KMS("[CRTC:%d]\n",
12038 crtc->base.base.id);
12039
83d65738 12040 I915_STATE_WARN(crtc->active && !crtc->base.state->enable,
8af6cf88
DV		 12041 "active crtc, but not enabled in sw tracking\n");
12042
b2784e15 12043 for_each_intel_encoder(dev, encoder) {
8af6cf88
DV		 12044 if (encoder->base.crtc != &crtc->base)
12045 continue;
12046 enabled = true;
12047 if (encoder->connectors_active)
12048 active = true;
12049 }
6c49f241 12050
e2c719b7 12051 I915_STATE_WARN(active != crtc->active,
8af6cf88
DV		 12052 "crtc's computed active state doesn't match tracked active state "
12053 "(expected %i, found %i)\n", active, crtc->active);
83d65738 12054 I915_STATE_WARN(enabled != crtc->base.state->enable,
8af6cf88 12055 "crtc's computed enabled state doesn't match tracked enabled state "
83d65738
MR		 12056 "(expected %i, found %i)\n", enabled,
12057 crtc->base.state->enable);
8af6cf88 12058
0e8ffe1b
DV		 12059 active = dev_priv->display.get_pipe_config(crtc,
12060 &pipe_config);
d62cf62a 12061
b6b5d049
VS		 12062 /* hw state is inconsistent with the pipe quirk */
12063 if ((crtc->pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE) ||
12064 (crtc->pipe == PIPE_B && dev_priv->quirks & QUIRK_PIPEB_FORCE))
d62cf62a
DV		 12065 active = crtc->active;
12066
b2784e15 12067 for_each_intel_encoder(dev, encoder) {
3eaba51c 12068 enum pipe pipe;
6c49f241
DV		 12069 if (encoder->base.crtc != &crtc->base)
12070 continue;
1d37b689 12071 if (encoder->get_hw_state(encoder, &pipe))
6c49f241
DV		 12072 encoder->get_config(encoder, &pipe_config);
12073 }
12074
e2c719b7 12075 I915_STATE_WARN(crtc->active != active,
0e8ffe1b
DV		 12076 "crtc active state doesn't match with hw state "
12077 "(expected %i, found %i)\n", crtc->active, active);
12078
c0b03411 12079 if (active &&
6e3c9717 12080 !intel_pipe_config_compare(dev, crtc->config, &pipe_config)) {
e2c719b7 12081 I915_STATE_WARN(1, "pipe state doesn't match!\n");
c0b03411
DV		 12082 intel_dump_pipe_config(crtc, &pipe_config,
12083 "[hw state]");
6e3c9717 12084 intel_dump_pipe_config(crtc, crtc->config,
c0b03411
DV		 12085 "[sw state]");
12086 }
8af6cf88
DV		 12087 }
12088}
12089
91d1b4bd
DV		 12090static void
12091check_shared_dpll_state(struct drm_device *dev)
12092{
fbee40df 12093 struct drm_i915_private *dev_priv = dev->dev_private;
91d1b4bd
DV		 12094 struct intel_crtc *crtc;
12095 struct intel_dpll_hw_state dpll_hw_state;
12096 int i;
5358901f
DV		 12097
12098 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
12099 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
12100 int enabled_crtcs = 0, active_crtcs = 0;
12101 bool active;
12102
12103 memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
12104
12105 DRM_DEBUG_KMS("%s\n", pll->name);
12106
12107 active = pll->get_hw_state(dev_priv, pll, &dpll_hw_state);
12108
e2c719b7 12109 I915_STATE_WARN(pll->active > hweight32(pll->config.crtc_mask),
5358901f 12110 "more active pll users than references: %i vs %i\n",
3e369b76 12111 pll->active, hweight32(pll->config.crtc_mask));
e2c719b7 12112 I915_STATE_WARN(pll->active && !pll->on,
5358901f 12113 "pll in active use but not on in sw tracking\n");
e2c719b7 12114 I915_STATE_WARN(pll->on && !pll->active,
35c95375 12115 "pll in on but not on in use in sw tracking\n");
e2c719b7 12116 I915_STATE_WARN(pll->on != active,
5358901f
DV		 12117 "pll on state mismatch (expected %i, found %i)\n",
12118 pll->on, active);
12119
d3fcc808 12120 for_each_intel_crtc(dev, crtc) {
83d65738 12121 if (crtc->base.state->enable && intel_crtc_to_shared_dpll(crtc) == pll)
5358901f
DV		 12122 enabled_crtcs++;
12123 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll)
12124 active_crtcs++;
12125 }
e2c719b7 12126 I915_STATE_WARN(pll->active != active_crtcs,
5358901f
DV		 12127 "pll active crtcs mismatch (expected %i, found %i)\n",
12128 pll->active, active_crtcs);
e2c719b7 12129 I915_STATE_WARN(hweight32(pll->config.crtc_mask) != enabled_crtcs,
5358901f 12130 "pll enabled crtcs mismatch (expected %i, found %i)\n",
3e369b76 12131 hweight32(pll->config.crtc_mask), enabled_crtcs);
66e985c0 12132
e2c719b7 12133 I915_STATE_WARN(pll->on && memcmp(&pll->config.hw_state, &dpll_hw_state,
66e985c0
DV		 12134 sizeof(dpll_hw_state)),
12135 "pll hw state mismatch\n");
5358901f 12136 }
8af6cf88
DV		 12137}
12138
91d1b4bd
DV		 12139void
12140intel_modeset_check_state(struct drm_device *dev)
12141{
08db6652 12142 check_wm_state(dev);
91d1b4bd
DV		 12143 check_connector_state(dev);
12144 check_encoder_state(dev);
12145 check_crtc_state(dev);
12146 check_shared_dpll_state(dev);
12147}
12148
5cec258b 12149void ironlake_check_encoder_dotclock(const struct intel_crtc_state *pipe_config,
18442d08
VS		 12150 int dotclock)
12151{
12152 /*
12153 * FDI already provided one idea for the dotclock.
12154 * Yell if the encoder disagrees.
12155 */
2d112de7 12156 WARN(!intel_fuzzy_clock_check(pipe_config->base.adjusted_mode.crtc_clock, dotclock),
18442d08 12157 "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
2d112de7 12158 pipe_config->base.adjusted_mode.crtc_clock, dotclock);
18442d08
VS		 12159}
12160
80715b2f
VS		 12161static void update_scanline_offset(struct intel_crtc *crtc)
12162{
12163 struct drm_device *dev = crtc->base.dev;
12164
12165 /*
12166 * The scanline counter increments at the leading edge of hsync.
12167 *
12168 * On most platforms it starts counting from vtotal-1 on the
12169 * first active line. That means the scanline counter value is
12170 * always one less than what we would expect. Ie. just after
12171 * start of vblank, which also occurs at start of hsync (on the
12172 * last active line), the scanline counter will read vblank_start-1.
12173 *
12174 * On gen2 the scanline counter starts counting from 1 instead
12175 * of vtotal-1, so we have to subtract one (or rather add vtotal-1
12176 * to keep the value positive), instead of adding one.
12177 *
12178 * On HSW+ the behaviour of the scanline counter depends on the output
12179 * type. For DP ports it behaves like most other platforms, but on HDMI
12180 * there's an extra 1 line difference. So we need to add two instead of
12181 * one to the value.
12182 */
12183 if (IS_GEN2(dev)) {
6e3c9717 12184 const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode;
80715b2f
VS		 12185 int vtotal;
12186
12187 vtotal = mode->crtc_vtotal;
12188 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
12189 vtotal /= 2;
12190
12191 crtc->scanline_offset = vtotal - 1;
12192 } else if (HAS_DDI(dev) &&
409ee761 12193 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
80715b2f
VS		 12194 crtc->scanline_offset = 2;
12195 } else
12196 crtc->scanline_offset = 1;
12197}
12198
5cec258b 12199static struct intel_crtc_state *
7f27126e 12200intel_modeset_compute_config(struct drm_crtc *crtc,
0a9ab303 12201 struct drm_atomic_state *state)
7f27126e 12202{
548ee15b 12203 struct intel_crtc_state *pipe_config;
0b901879
ACO		 12204 int ret = 0;
12205
12206 ret = drm_atomic_add_affected_connectors(state, crtc);
12207 if (ret)
12208 return ERR_PTR(ret);
7f27126e 12209
8c7b5ccb
ACO		 12210 ret = drm_atomic_helper_check_modeset(state->dev, state);
12211 if (ret)
12212 return ERR_PTR(ret);
7f27126e 12213
7f27126e
JB		 12214 /*
12215 * Note this needs changes when we start tracking multiple modes
12216 * and crtcs. At that point we'll need to compute the whole config
12217 * (i.e. one pipe_config for each crtc) rather than just the one
12218 * for this crtc.
12219 */
548ee15b
ACO		 12220 pipe_config = intel_atomic_get_crtc_state(state, to_intel_crtc(crtc));
12221 if (IS_ERR(pipe_config))
12222 return pipe_config;
83a57153 12223
4fed33f6 12224 if (!pipe_config->base.enable)
548ee15b 12225 return pipe_config;
7f27126e 12226
8c7b5ccb 12227 ret = intel_modeset_pipe_config(crtc, state, pipe_config);
548ee15b
ACO		 12228 if (ret)
12229 return ERR_PTR(ret);
12230
8d8c9b51
ACO		 12231 /* Check things that can only be changed through modeset */
12232 if (pipe_config->has_audio !=
12233 to_intel_crtc(crtc)->config->has_audio)
12234 pipe_config->base.mode_changed = true;
12235
12236 /*
12237 * Note we have an issue here with infoframes: current code
12238 * only updates them on the full mode set path per hw
12239 * requirements. So here we should be checking for any
12240 * required changes and forcing a mode set.
12241 */
12242
548ee15b 12243 intel_dump_pipe_config(to_intel_crtc(crtc), pipe_config,"[modeset]");
db7542dd 12244
8c7b5ccb
ACO		 12245 ret = drm_atomic_helper_check_planes(state->dev, state);
12246 if (ret)
12247 return ERR_PTR(ret);
12248
548ee15b 12249 return pipe_config;
7f27126e
JB		 12250}
12251
0a9ab303 12252static int __intel_set_mode_setup_plls(struct drm_atomic_state *state)
ed6739ef 12253{
225da59b 12254 struct drm_device *dev = state->dev;
ed6739ef 12255 struct drm_i915_private *dev_priv = to_i915(dev);
0a9ab303 12256 unsigned clear_pipes = 0;
ed6739ef 12257 struct intel_crtc *intel_crtc;
0a9ab303
ACO		 12258 struct intel_crtc_state *intel_crtc_state;
12259 struct drm_crtc *crtc;
12260 struct drm_crtc_state *crtc_state;
ed6739ef 12261 int ret = 0;
0a9ab303 12262 int i;
ed6739ef
ACO		 12263
12264 if (!dev_priv->display.crtc_compute_clock)
12265 return 0;
12266
0a9ab303
ACO		 12267 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12268 intel_crtc = to_intel_crtc(crtc);
12269
12270 if (needs_modeset(crtc_state))
12271 clear_pipes |= 1 << intel_crtc->pipe;
12272 }
12273
ed6739ef
ACO		 12274 ret = intel_shared_dpll_start_config(dev_priv, clear_pipes);
12275 if (ret)
12276 goto done;
12277
0a9ab303
ACO		 12278 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12279 if (!needs_modeset(crtc_state) || !crtc_state->enable)
225da59b
ACO		 12280 continue;
12281
0a9ab303
ACO		 12282 intel_crtc = to_intel_crtc(crtc);
12283 intel_crtc_state = to_intel_crtc_state(crtc_state);
12284
ed6739ef 12285 ret = dev_priv->display.crtc_compute_clock(intel_crtc,
0a9ab303 12286 intel_crtc_state);
ed6739ef
ACO		 12287 if (ret) {
12288 intel_shared_dpll_abort_config(dev_priv);
12289 goto done;
12290 }
12291 }
12292
12293done:
12294 return ret;
12295}
12296
054518dd
ACO		 12297/* Code that should eventually be part of atomic_check() */
12298static int __intel_set_mode_checks(struct drm_atomic_state *state)
12299{
12300 struct drm_device *dev = state->dev;
12301 int ret;
12302
12303 /*
12304 * See if the config requires any additional preparation, e.g.
12305 * to adjust global state with pipes off. We need to do this
12306 * here so we can get the modeset_pipe updated config for the new
12307 * mode set on this crtc. For other crtcs we need to use the
12308 * adjusted_mode bits in the crtc directly.
12309 */
12310 if (IS_VALLEYVIEW(dev) || IS_BROXTON(dev)) {
12311 ret = valleyview_modeset_global_pipes(state);
12312 if (ret)
12313 return ret;
12314 }
12315
12316 ret = __intel_set_mode_setup_plls(state);
12317 if (ret)
12318 return ret;
12319
12320 return 0;
12321}
12322
0a9ab303 12323static int __intel_set_mode(struct drm_crtc *modeset_crtc,
0a9ab303 12324 struct intel_crtc_state *pipe_config)
a6778b3c 12325{
0a9ab303 12326 struct drm_device *dev = modeset_crtc->dev;
fbee40df 12327 struct drm_i915_private *dev_priv = dev->dev_private;
304603f4 12328 struct drm_atomic_state *state = pipe_config->base.state;
83a57153 12329 struct intel_crtc_state *crtc_state_copy = NULL;
25c5b266 12330 struct intel_crtc *intel_crtc;
0a9ab303
ACO		 12331 struct drm_crtc *crtc;
12332 struct drm_crtc_state *crtc_state;
d3a40d1b
ACO		 12333 struct drm_plane *plane;
12334 struct drm_plane_state *plane_state;
c0c36b94 12335 int ret = 0;
0a9ab303 12336 int i;
a6778b3c 12337
054518dd
ACO		 12338 ret = __intel_set_mode_checks(state);
12339 if (ret < 0)
12340 return ret;
12341
83a57153 12342 crtc_state_copy = kmalloc(sizeof(*crtc_state_copy), GFP_KERNEL);
9eb45f22
ACO		 12343 if (!crtc_state_copy)
12344 return -ENOMEM;
83a57153 12345
0a9ab303
ACO		 12346 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12347 if (!needs_modeset(crtc_state))
12348 continue;
460da916 12349
0a9ab303
ACO		 12350 if (!crtc_state->enable) {
12351 intel_crtc_disable(crtc);
12352 } else if (crtc->state->enable) {
12353 intel_crtc_disable_planes(crtc);
12354 dev_priv->display.crtc_disable(crtc);
ce22dba9 12355 }
ea9d758d 12356 }
a6778b3c 12357
6c4c86f5
DV		 12358 /* crtc->mode is already used by the ->mode_set callbacks, hence we need
12359 * to set it here already despite that we pass it down the callchain.
7f27126e
JB		 12360 *
12361 * Note we'll need to fix this up when we start tracking multiple
12362 * pipes; here we assume a single modeset_pipe and only track the
12363 * single crtc and mode.
f6e5b160 12364 */
0a9ab303 12365 if (pipe_config->base.enable && needs_modeset(&pipe_config->base)) {
8c7b5ccb 12366 modeset_crtc->mode = pipe_config->base.mode;
b8cecdf5
DV		 12367 /* mode_set/enable/disable functions rely on a correct pipe
12368 * config. */
0a9ab303 12369 intel_crtc_set_state(to_intel_crtc(modeset_crtc), pipe_config);
c326c0a9
VS		 12370
12371 /*
12372 * Calculate and store various constants which
12373 * are later needed by vblank and swap-completion
12374 * timestamping. They are derived from true hwmode.
12375 */
0a9ab303 12376 drm_calc_timestamping_constants(modeset_crtc,
2d112de7 12377 &pipe_config->base.adjusted_mode);
b8cecdf5 12378 }
7758a113 12379
ea9d758d
DV		 12380 /* Only after disabling all output pipelines that will be changed can we
12381 * update the the output configuration. */
0a9ab303 12382 intel_modeset_update_state(state);
f6e5b160 12383
304603f4 12384 modeset_update_crtc_power_domains(state);
47fab737 12385
d3a40d1b
ACO		 12386 for_each_plane_in_state(state, plane, plane_state, i) {
12387 if (WARN_ON(plane != modeset_crtc->primary))
12388 continue;
0a9ab303 12389
d3a40d1b
ACO		 12390 /* Primary plane is disabled in intel_crtc_disable() */
12391 if (!pipe_config->base.enable)
12392 continue;
0a9ab303 12393
d3a40d1b
ACO		 12394 ret = drm_plane_helper_update(plane, plane_state->crtc,
12395 plane_state->fb,
12396 plane_state->crtc_x,
12397 plane_state->crtc_y,
12398 plane_state->crtc_w,
12399 plane_state->crtc_h,
12400 plane_state->src_x,
12401 plane_state->src_y,
12402 plane_state->src_w,
12403 plane_state->src_h);
9eb45f22 12404 WARN_ON(ret != 0);
a6778b3c
DV		 12405 }
12406
12407 /* Now enable the clocks, plane, pipe, and connectors that we set up. */
0a9ab303
ACO		 12408 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12409 if (!needs_modeset(crtc_state) || !crtc_state->enable)
12410 continue;
12411
12412 update_scanline_offset(to_intel_crtc(crtc));
80715b2f 12413
0a9ab303
ACO		 12414 dev_priv->display.crtc_enable(crtc);
12415 intel_crtc_enable_planes(crtc);
80715b2f 12416 }
a6778b3c 12417
a6778b3c 12418 /* FIXME: add subpixel order */
83a57153 12419
9eb45f22
ACO		 12420 intel_crtc = to_intel_crtc(modeset_crtc);
12421
12422 /* The pipe_config will be freed with the atomic state, so
12423 * make a copy. */
12424 memcpy(crtc_state_copy, intel_crtc->config, sizeof *crtc_state_copy);
12425 intel_crtc->config = crtc_state_copy;
12426 intel_crtc->base.state = &crtc_state_copy->base;
12427
12428 return 0;
f6e5b160
CW		 12429}
12430
0a9ab303 12431static int intel_set_mode_with_config(struct drm_crtc *crtc,
0a9ab303 12432 struct intel_crtc_state *pipe_config)
f30da187
DV		 12433{
12434 int ret;
12435
8c7b5ccb 12436 ret = __intel_set_mode(crtc, pipe_config);
f30da187
DV		 12437
12438 if (ret == 0)
12439 intel_modeset_check_state(crtc->dev);
12440
12441 return ret;
12442}
12443
7f27126e 12444static int intel_set_mode(struct drm_crtc *crtc,
83a57153 12445 struct drm_atomic_state *state)
7f27126e 12446{
5cec258b 12447 struct intel_crtc_state *pipe_config;
83a57153 12448 int ret = 0;
7f27126e 12449
8c7b5ccb 12450 pipe_config = intel_modeset_compute_config(crtc, state);
83a57153
ACO		 12451 if (IS_ERR(pipe_config)) {
12452 ret = PTR_ERR(pipe_config);
12453 goto out;
12454 }
12455
8c7b5ccb 12456 ret = intel_set_mode_with_config(crtc, pipe_config);
83a57153
ACO		 12457 if (ret)
12458 goto out;
7f27126e 12459
83a57153
ACO		 12460out:
12461 return ret;
7f27126e
JB		 12462}
12463
c0c36b94
CW		 12464void intel_crtc_restore_mode(struct drm_crtc *crtc)
12465{
83a57153
ACO		 12466 struct drm_device *dev = crtc->dev;
12467 struct drm_atomic_state *state;
4be07317 12468 struct intel_crtc *intel_crtc;
83a57153
ACO		 12469 struct intel_encoder *encoder;
12470 struct intel_connector *connector;
12471 struct drm_connector_state *connector_state;
4be07317 12472 struct intel_crtc_state *crtc_state;
83a57153
ACO		 12473
12474 state = drm_atomic_state_alloc(dev);
12475 if (!state) {
12476 DRM_DEBUG_KMS("[CRTC:%d] mode restore failed, out of memory",
12477 crtc->base.id);
12478 return;
12479 }
12480
12481 state->acquire_ctx = dev->mode_config.acquire_ctx;
12482
12483 /* The force restore path in the HW readout code relies on the staged
12484 * config still keeping the user requested config while the actual
12485 * state has been overwritten by the configuration read from HW. We
12486 * need to copy the staged config to the atomic state, otherwise the
12487 * mode set will just reapply the state the HW is already in. */
12488 for_each_intel_encoder(dev, encoder) {
12489 if (&encoder->new_crtc->base != crtc)
12490 continue;
12491
12492 for_each_intel_connector(dev, connector) {
12493 if (connector->new_encoder != encoder)
12494 continue;
12495
12496 connector_state = drm_atomic_get_connector_state(state, &connector->base);
12497 if (IS_ERR(connector_state)) {
12498 DRM_DEBUG_KMS("Failed to add [CONNECTOR:%d:%s] to state: %ld\n",
12499 connector->base.base.id,
12500 connector->base.name,
12501 PTR_ERR(connector_state));
12502 continue;
12503 }
12504
12505 connector_state->crtc = crtc;
12506 connector_state->best_encoder = &encoder->base;
12507 }
12508 }
12509
4be07317
ACO		 12510 for_each_intel_crtc(dev, intel_crtc) {
12511 if (intel_crtc->new_enabled == intel_crtc->base.enabled)
12512 continue;
12513
12514 crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
12515 if (IS_ERR(crtc_state)) {
12516 DRM_DEBUG_KMS("Failed to add [CRTC:%d] to state: %ld\n",
12517 intel_crtc->base.base.id,
12518 PTR_ERR(crtc_state));
12519 continue;
12520 }
12521
12522 crtc_state->base.enable = intel_crtc->new_enabled;
8c7b5ccb
ACO		 12523
12524 if (&intel_crtc->base == crtc)
12525 drm_mode_copy(&crtc_state->base.mode, &crtc->mode);
4be07317
ACO		 12526 }
12527
d3a40d1b
ACO		 12528 intel_modeset_setup_plane_state(state, crtc, &crtc->mode,
12529 crtc->primary->fb, crtc->x, crtc->y);
12530
8c7b5ccb 12531 intel_set_mode(crtc, state);
83a57153
ACO		 12532
12533 drm_atomic_state_free(state);
c0c36b94
CW		 12534}
12535
25c5b266
DV		 12536#undef for_each_intel_crtc_masked
12537
b7885264
ACO		 12538static bool intel_connector_in_mode_set(struct intel_connector *connector,
12539 struct drm_mode_set *set)
12540{
12541 int ro;
12542
12543 for (ro = 0; ro < set->num_connectors; ro++)
12544 if (set->connectors[ro] == &connector->base)
12545 return true;
12546
12547 return false;
12548}
12549
2e431051 12550static int
9a935856
DV		 12551intel_modeset_stage_output_state(struct drm_device *dev,
12552 struct drm_mode_set *set,
944b0c76 12553 struct drm_atomic_state *state)
50f56119 12554{
9a935856 12555 struct intel_connector *connector;
d5432a9d 12556 struct drm_connector *drm_connector;
944b0c76 12557 struct drm_connector_state *connector_state;
d5432a9d
ACO		 12558 struct drm_crtc *crtc;
12559 struct drm_crtc_state *crtc_state;
12560 int i, ret;
50f56119 12561
9abdda74 12562 /* The upper layers ensure that we either disable a crtc or have a list
9a935856
DV		 12563 * of connectors. For paranoia, double-check this. */
12564 WARN_ON(!set->fb && (set->num_connectors != 0));
12565 WARN_ON(set->fb && (set->num_connectors == 0));
12566
3a3371ff 12567 for_each_intel_connector(dev, connector) {
b7885264
ACO		 12568 bool in_mode_set = intel_connector_in_mode_set(connector, set);
12569
d5432a9d
ACO		 12570 if (!in_mode_set && connector->base.state->crtc != set->crtc)
12571 continue;
12572
12573 connector_state =
12574 drm_atomic_get_connector_state(state, &connector->base);
12575 if (IS_ERR(connector_state))
12576 return PTR_ERR(connector_state);
12577
b7885264
ACO		 12578 if (in_mode_set) {
12579 int pipe = to_intel_crtc(set->crtc)->pipe;
d5432a9d
ACO		 12580 connector_state->best_encoder =
12581 &intel_find_encoder(connector, pipe)->base;
50f56119
DV		 12582 }
12583
d5432a9d 12584 if (connector->base.state->crtc != set->crtc)
b7885264
ACO		 12585 continue;
12586
9a935856
DV		 12587 /* If we disable the crtc, disable all its connectors. Also, if
12588 * the connector is on the changing crtc but not on the new
12589 * connector list, disable it. */
b7885264 12590 if (!set->fb || !in_mode_set) {
d5432a9d 12591 connector_state->best_encoder = NULL;
9a935856
DV		 12592
12593 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
12594 connector->base.base.id,
c23cc417 12595 connector->base.name);
9a935856 12596 }
50f56119 12597 }
9a935856 12598 /* connector->new_encoder is now updated for all connectors. */
50f56119 12599
d5432a9d
ACO		 12600 for_each_connector_in_state(state, drm_connector, connector_state, i) {
12601 connector = to_intel_connector(drm_connector);
12602
12603 if (!connector_state->best_encoder) {
12604 ret = drm_atomic_set_crtc_for_connector(connector_state,
12605 NULL);
12606 if (ret)
12607 return ret;
7668851f 12608
50f56119 12609 continue;
d5432a9d 12610 }
50f56119 12611
d5432a9d
ACO		 12612 if (intel_connector_in_mode_set(connector, set)) {
12613 struct drm_crtc *crtc = connector->base.state->crtc;
12614
12615 /* If this connector was in a previous crtc, add it
12616 * to the state. We might need to disable it. */
12617 if (crtc) {
12618 crtc_state =
12619 drm_atomic_get_crtc_state(state, crtc);
12620 if (IS_ERR(crtc_state))
12621 return PTR_ERR(crtc_state);
12622 }
12623
12624 ret = drm_atomic_set_crtc_for_connector(connector_state,
12625 set->crtc);
12626 if (ret)
12627 return ret;
12628 }
50f56119
DV		 12629
12630 /* Make sure the new CRTC will work with the encoder */
d5432a9d
ACO		 12631 if (!drm_encoder_crtc_ok(connector_state->best_encoder,
12632 connector_state->crtc)) {
5e2b584e 12633 return -EINVAL;
50f56119 12634 }
944b0c76 12635
9a935856
DV		 12636 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
12637 connector->base.base.id,
c23cc417 12638 connector->base.name,
d5432a9d 12639 connector_state->crtc->base.id);
944b0c76 12640
d5432a9d
ACO		 12641 if (connector_state->best_encoder != &connector->encoder->base)
12642 connector->encoder =
12643 to_intel_encoder(connector_state->best_encoder);
0e32b39c 12644 }
7668851f 12645
d5432a9d
ACO		 12646 for_each_crtc_in_state(state, crtc, crtc_state, i) {
12647 ret = drm_atomic_add_affected_connectors(state, crtc);
12648 if (ret)
12649 return ret;
4be07317 12650
d5432a9d 12651 crtc_state->enable = drm_atomic_connectors_for_crtc(state, crtc);
7668851f
VS		 12652 }
12653
8c7b5ccb
ACO		 12654 ret = intel_modeset_setup_plane_state(state, set->crtc, set->mode,
12655 set->fb, set->x, set->y);
12656 if (ret)
12657 return ret;
12658
12659 crtc_state = drm_atomic_get_crtc_state(state, set->crtc);
12660 if (IS_ERR(crtc_state))
12661 return PTR_ERR(crtc_state);
12662
12663 if (set->mode)
12664 drm_mode_copy(&crtc_state->mode, set->mode);
12665
12666 if (set->num_connectors)
12667 crtc_state->active = true;
12668
2e431051
DV		 12669 return 0;
12670}
12671
bb546623
ACO		 12672static bool primary_plane_visible(struct drm_crtc *crtc)
12673{
12674 struct intel_plane_state *plane_state =
12675 to_intel_plane_state(crtc->primary->state);
12676
12677 return plane_state->visible;
12678}
12679
2e431051
DV		 12680static int intel_crtc_set_config(struct drm_mode_set *set)
12681{
12682 struct drm_device *dev;
83a57153 12683 struct drm_atomic_state *state = NULL;
5cec258b 12684 struct intel_crtc_state *pipe_config;
bb546623 12685 bool primary_plane_was_visible;
2e431051 12686 int ret;
2e431051 12687
8d3e375e
DV		 12688 BUG_ON(!set);
12689 BUG_ON(!set->crtc);
12690 BUG_ON(!set->crtc->helper_private);
2e431051 12691
7e53f3a4
DV		 12692 /* Enforce sane interface api - has been abused by the fb helper. */
12693 BUG_ON(!set->mode && set->fb);
12694 BUG_ON(set->fb && set->num_connectors == 0);
431e50f7 12695
2e431051
DV		 12696 if (set->fb) {
12697 DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
12698 set->crtc->base.id, set->fb->base.id,
12699 (int)set->num_connectors, set->x, set->y);
12700 } else {
12701 DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
2e431051
DV		 12702 }
12703
12704 dev = set->crtc->dev;
12705
83a57153 12706 state = drm_atomic_state_alloc(dev);
7cbf41d6
ACO		 12707 if (!state)
12708 return -ENOMEM;
83a57153
ACO		 12709
12710 state->acquire_ctx = dev->mode_config.acquire_ctx;
12711
462a425a 12712 ret = intel_modeset_stage_output_state(dev, set, state);
2e431051 12713 if (ret)
7cbf41d6 12714 goto out;
2e431051 12715
8c7b5ccb 12716 pipe_config = intel_modeset_compute_config(set->crtc, state);
20664591 12717 if (IS_ERR(pipe_config)) {
6ac0483b 12718 ret = PTR_ERR(pipe_config);
7cbf41d6 12719 goto out;
20664591 12720 }
50f52756 12721
1f9954d0
JB		 12722 intel_update_pipe_size(to_intel_crtc(set->crtc));
12723
bb546623
ACO		 12724 primary_plane_was_visible = primary_plane_visible(set->crtc);
12725
8c7b5ccb 12726 ret = intel_set_mode_with_config(set->crtc, pipe_config);
bb546623
ACO		 12727
12728 if (ret == 0 &&
12729 pipe_config->base.enable &&
12730 pipe_config->base.planes_changed &&
12731 !needs_modeset(&pipe_config->base)) {
3b150f08 12732 struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);
3b150f08
MR		 12733
12734 /*
12735 * We need to make sure the primary plane is re-enabled if it
12736 * has previously been turned off.
12737 */
bb546623
ACO		 12738 if (ret == 0 && !primary_plane_was_visible &&
12739 primary_plane_visible(set->crtc)) {
3b150f08 12740 WARN_ON(!intel_crtc->active);
87d4300a 12741 intel_post_enable_primary(set->crtc);
3b150f08
MR		 12742 }
12743
7ca51a3a
JB		 12744 /*
12745 * In the fastboot case this may be our only check of the
12746 * state after boot. It would be better to only do it on
12747 * the first update, but we don't have a nice way of doing that
12748 * (and really, set_config isn't used much for high freq page
12749 * flipping, so increasing its cost here shouldn't be a big
12750 * deal).
12751 */
d330a953 12752 if (i915.fastboot && ret == 0)
7ca51a3a 12753 intel_modeset_check_state(set->crtc->dev);
50f56119
DV		 12754 }
12755
2d05eae1 12756 if (ret) {
bf67dfeb
DV		 12757 DRM_DEBUG_KMS("failed to set mode on [CRTC:%d], err = %d\n",
12758 set->crtc->base.id, ret);
2d05eae1 12759 }
50f56119 12760
7cbf41d6 12761out:
e5d958ef 12762 drm_atomic_state_free(state);
50f56119
DV		 12763 return ret;
12764}
f6e5b160
CW		 12765
12766static const struct drm_crtc_funcs intel_crtc_funcs = {
f6e5b160 12767 .gamma_set = intel_crtc_gamma_set,
50f56119 12768 .set_config = intel_crtc_set_config,
f6e5b160
CW		 12769 .destroy = intel_crtc_destroy,
12770 .page_flip = intel_crtc_page_flip,
1356837e
MR		 12771 .atomic_duplicate_state = intel_crtc_duplicate_state,
12772 .atomic_destroy_state = intel_crtc_destroy_state,
f6e5b160
CW		 12773};
12774
5358901f
DV		 12775static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
12776 struct intel_shared_dpll *pll,
12777 struct intel_dpll_hw_state *hw_state)
ee7b9f93 12778{
5358901f 12779 uint32_t val;
ee7b9f93 12780
f458ebbc 12781 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_PLLS))
bd2bb1b9
PZ		 12782 return false;
12783
5358901f 12784 val = I915_READ(PCH_DPLL(pll->id));
66e985c0
DV		 12785 hw_state->dpll = val;
12786 hw_state->fp0 = I915_READ(PCH_FP0(pll->id));
12787 hw_state->fp1 = I915_READ(PCH_FP1(pll->id));
5358901f
DV		 12788
12789 return val & DPLL_VCO_ENABLE;
12790}
12791
15bdd4cf
DV		 12792static void ibx_pch_dpll_mode_set(struct drm_i915_private *dev_priv,
12793 struct intel_shared_dpll *pll)
12794{
3e369b76
ACO		 12795 I915_WRITE(PCH_FP0(pll->id), pll->config.hw_state.fp0);
12796 I915_WRITE(PCH_FP1(pll->id), pll->config.hw_state.fp1);
15bdd4cf
DV		 12797}
12798
e7b903d2
DV		 12799static void ibx_pch_dpll_enable(struct drm_i915_private *dev_priv,
12800 struct intel_shared_dpll *pll)
12801{
e7b903d2 12802 /* PCH refclock must be enabled first */
89eff4be 12803 ibx_assert_pch_refclk_enabled(dev_priv);
e7b903d2 12804
3e369b76 12805 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
15bdd4cf
DV		 12806
12807 /* Wait for the clocks to stabilize. */
12808 POSTING_READ(PCH_DPLL(pll->id));
12809 udelay(150);
12810
12811 /* The pixel multiplier can only be updated once the
12812 * DPLL is enabled and the clocks are stable.
12813 *
12814 * So write it again.
12815 */
3e369b76 12816 I915_WRITE(PCH_DPLL(pll->id), pll->config.hw_state.dpll);
15bdd4cf 12817 POSTING_READ(PCH_DPLL(pll->id));
e7b903d2
DV		 12818 udelay(200);
12819}
12820
12821static void ibx_pch_dpll_disable(struct drm_i915_private *dev_priv,
12822 struct intel_shared_dpll *pll)
12823{
12824 struct drm_device *dev = dev_priv->dev;
12825 struct intel_crtc *crtc;
e7b903d2
DV		 12826
12827 /* Make sure no transcoder isn't still depending on us. */
d3fcc808 12828 for_each_intel_crtc(dev, crtc) {
e7b903d2
DV		 12829 if (intel_crtc_to_shared_dpll(crtc) == pll)
12830 assert_pch_transcoder_disabled(dev_priv, crtc->pipe);
ee7b9f93
JB		 12831 }
12832
15bdd4cf
DV		 12833 I915_WRITE(PCH_DPLL(pll->id), 0);
12834 POSTING_READ(PCH_DPLL(pll->id));
e7b903d2
DV		 12835 udelay(200);
12836}
12837
46edb027
DV		 12838static char *ibx_pch_dpll_names[] = {
12839 "PCH DPLL A",
12840 "PCH DPLL B",
12841};
12842
7c74ade1 12843static void ibx_pch_dpll_init(struct drm_device *dev)
ee7b9f93 12844{
e7b903d2 12845 struct drm_i915_private *dev_priv = dev->dev_private;
ee7b9f93
JB		 12846 int i;
12847
7c74ade1 12848 dev_priv->num_shared_dpll = 2;
ee7b9f93 12849
e72f9fbf 12850 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
46edb027
DV		 12851 dev_priv->shared_dplls[i].id = i;
12852 dev_priv->shared_dplls[i].name = ibx_pch_dpll_names[i];
15bdd4cf 12853 dev_priv->shared_dplls[i].mode_set = ibx_pch_dpll_mode_set;
e7b903d2
DV		 12854 dev_priv->shared_dplls[i].enable = ibx_pch_dpll_enable;
12855 dev_priv->shared_dplls[i].disable = ibx_pch_dpll_disable;
5358901f
DV		 12856 dev_priv->shared_dplls[i].get_hw_state =
12857 ibx_pch_dpll_get_hw_state;
ee7b9f93
JB		 12858 }
12859}
12860
7c74ade1
DV		 12861static void intel_shared_dpll_init(struct drm_device *dev)
12862{
e7b903d2 12863 struct drm_i915_private *dev_priv = dev->dev_private;
7c74ade1 12864
9cd86933
DV		 12865 if (HAS_DDI(dev))
12866 intel_ddi_pll_init(dev);
12867 else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
7c74ade1
DV		 12868 ibx_pch_dpll_init(dev);
12869 else
12870 dev_priv->num_shared_dpll = 0;
12871
12872 BUG_ON(dev_priv->num_shared_dpll > I915_NUM_PLLS);
7c74ade1
DV		 12873}
12874
1fc0a8f7
TU		 12875/**
12876 * intel_wm_need_update - Check whether watermarks need updating
12877 * @plane: drm plane
12878 * @state: new plane state
12879 *
12880 * Check current plane state versus the new one to determine whether
12881 * watermarks need to be recalculated.
12882 *
12883 * Returns true or false.
12884 */
12885bool intel_wm_need_update(struct drm_plane *plane,
12886 struct drm_plane_state *state)
12887{
12888 /* Update watermarks on tiling changes. */
12889 if (!plane->state->fb || !state->fb ||
12890 plane->state->fb->modifier[0] != state->fb->modifier[0] ||
12891 plane->state->rotation != state->rotation)
12892 return true;
12893
12894 return false;
12895}
12896
6beb8c23
MR		 12897/**
12898 * intel_prepare_plane_fb - Prepare fb for usage on plane
12899 * @plane: drm plane to prepare for
12900 * @fb: framebuffer to prepare for presentation
12901 *
12902 * Prepares a framebuffer for usage on a display plane. Generally this
12903 * involves pinning the underlying object and updating the frontbuffer tracking
12904 * bits. Some older platforms need special physical address handling for
12905 * cursor planes.
12906 *
12907 * Returns 0 on success, negative error code on failure.
12908 */
12909int
12910intel_prepare_plane_fb(struct drm_plane *plane,
d136dfee
TU		 12911 struct drm_framebuffer *fb,
12912 const struct drm_plane_state *new_state)
465c120c
MR		 12913{
12914 struct drm_device *dev = plane->dev;
6beb8c23
MR		 12915 struct intel_plane *intel_plane = to_intel_plane(plane);
12916 enum pipe pipe = intel_plane->pipe;
12917 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
12918 struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
12919 unsigned frontbuffer_bits = 0;
12920 int ret = 0;
465c120c 12921
ea2c67bb 12922 if (!obj)
465c120c
MR		 12923 return 0;
12924
6beb8c23
MR		 12925 switch (plane->type) {
12926 case DRM_PLANE_TYPE_PRIMARY:
12927 frontbuffer_bits = INTEL_FRONTBUFFER_PRIMARY(pipe);
12928 break;
12929 case DRM_PLANE_TYPE_CURSOR:
12930 frontbuffer_bits = INTEL_FRONTBUFFER_CURSOR(pipe);
12931 break;
12932 case DRM_PLANE_TYPE_OVERLAY:
12933 frontbuffer_bits = INTEL_FRONTBUFFER_SPRITE(pipe);
12934 break;
12935 }
465c120c 12936
6beb8c23 12937 mutex_lock(&dev->struct_mutex);
465c120c 12938
6beb8c23
MR		 12939 if (plane->type == DRM_PLANE_TYPE_CURSOR &&
12940 INTEL_INFO(dev)->cursor_needs_physical) {
12941 int align = IS_I830(dev) ? 16 * 1024 : 256;
12942 ret = i915_gem_object_attach_phys(obj, align);
12943 if (ret)
12944 DRM_DEBUG_KMS("failed to attach phys object\n");
12945 } else {
82bc3b2d 12946 ret = intel_pin_and_fence_fb_obj(plane, fb, new_state, NULL);
6beb8c23 12947 }
465c120c 12948
6beb8c23
MR		 12949 if (ret == 0)
12950 i915_gem_track_fb(old_obj, obj, frontbuffer_bits);
fdd508a6 12951
4c34574f 12952 mutex_unlock(&dev->struct_mutex);
465c120c 12953
6beb8c23
MR		 12954 return ret;
12955}
12956
38f3ce3a
MR		 12957/**
12958 * intel_cleanup_plane_fb - Cleans up an fb after plane use
12959 * @plane: drm plane to clean up for
12960 * @fb: old framebuffer that was on plane
12961 *
12962 * Cleans up a framebuffer that has just been removed from a plane.
12963 */
12964void
12965intel_cleanup_plane_fb(struct drm_plane *plane,
d136dfee
TU		 12966 struct drm_framebuffer *fb,
12967 const struct drm_plane_state *old_state)
38f3ce3a
MR		 12968{
12969 struct drm_device *dev = plane->dev;
12970 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
12971
12972 if (WARN_ON(!obj))
12973 return;
12974
12975 if (plane->type != DRM_PLANE_TYPE_CURSOR ||
12976 !INTEL_INFO(dev)->cursor_needs_physical) {
12977 mutex_lock(&dev->struct_mutex);
82bc3b2d 12978 intel_unpin_fb_obj(fb, old_state);
38f3ce3a
MR		 12979 mutex_unlock(&dev->struct_mutex);
12980 }
465c120c
MR		 12981}
12982
6156a456
CK		 12983int
12984skl_max_scale(struct intel_crtc *intel_crtc, struct intel_crtc_state *crtc_state)
12985{
12986 int max_scale;
12987 struct drm_device *dev;
12988 struct drm_i915_private *dev_priv;
12989 int crtc_clock, cdclk;
12990
12991 if (!intel_crtc || !crtc_state)
12992 return DRM_PLANE_HELPER_NO_SCALING;
12993
12994 dev = intel_crtc->base.dev;
12995 dev_priv = dev->dev_private;
12996 crtc_clock = crtc_state->base.adjusted_mode.crtc_clock;
12997 cdclk = dev_priv->display.get_display_clock_speed(dev);
12998
12999 if (!crtc_clock || !cdclk)
13000 return DRM_PLANE_HELPER_NO_SCALING;
13001
13002 /*
13003 * skl max scale is lower of:
13004 * close to 3 but not 3, -1 is for that purpose
13005 * or
13006 * cdclk/crtc_clock
13007 */
13008 max_scale = min((1 << 16) * 3 - 1, (1 << 8) * ((cdclk << 8) / crtc_clock));
13009
13010 return max_scale;
13011}
13012
465c120c 13013static int
3c692a41
GP		 13014intel_check_primary_plane(struct drm_plane *plane,
13015 struct intel_plane_state *state)
13016{
32b7eeec
MR		 13017 struct drm_device *dev = plane->dev;
13018 struct drm_i915_private *dev_priv = dev->dev_private;
2b875c22 13019 struct drm_crtc *crtc = state->base.crtc;
ea2c67bb 13020 struct intel_crtc *intel_crtc;
6156a456 13021 struct intel_crtc_state *crtc_state;
2b875c22 13022 struct drm_framebuffer *fb = state->base.fb;
3c692a41
GP		 13023 struct drm_rect *dest = &state->dst;
13024 struct drm_rect *src = &state->src;
13025 const struct drm_rect *clip = &state->clip;
d8106366 13026 bool can_position = false;
6156a456
CK		 13027 int max_scale = DRM_PLANE_HELPER_NO_SCALING;
13028 int min_scale = DRM_PLANE_HELPER_NO_SCALING;
465c120c
MR		 13029 int ret;
13030
ea2c67bb
MR		 13031 crtc = crtc ? crtc : plane->crtc;
13032 intel_crtc = to_intel_crtc(crtc);
6156a456
CK		 13033 crtc_state = state->base.state ?
13034 intel_atomic_get_crtc_state(state->base.state, intel_crtc) : NULL;
ea2c67bb 13035
6156a456
CK		 13036 if (INTEL_INFO(dev)->gen >= 9) {
13037 min_scale = 1;
13038 max_scale = skl_max_scale(intel_crtc, crtc_state);
d8106366 13039 can_position = true;
6156a456 13040 }
d8106366 13041
c59cb179
MR		 13042 ret = drm_plane_helper_check_update(plane, crtc, fb,
13043 src, dest, clip,
6156a456
CK		 13044 min_scale,
13045 max_scale,
d8106366
SJ		 13046 can_position, true,
13047 &state->visible);
c59cb179
MR		 13048 if (ret)
13049 return ret;
465c120c 13050
32b7eeec 13051 if (intel_crtc->active) {
b70709a6
ML		 13052 struct intel_plane_state *old_state =
13053 to_intel_plane_state(plane->state);
13054
32b7eeec
MR		 13055 intel_crtc->atomic.wait_for_flips = true;
13056
13057 /*
13058 * FBC does not work on some platforms for rotated
13059 * planes, so disable it when rotation is not 0 and
13060 * update it when rotation is set back to 0.
13061 *
13062 * FIXME: This is redundant with the fbc update done in
13063 * the primary plane enable function except that that
13064 * one is done too late. We eventually need to unify
13065 * this.
13066 */
b70709a6 13067 if (state->visible &&
32b7eeec 13068 INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
e35fef21 13069 dev_priv->fbc.crtc == intel_crtc &&
8e7d688b 13070 state->base.rotation != BIT(DRM_ROTATE_0)) {
32b7eeec
MR		 13071 intel_crtc->atomic.disable_fbc = true;
13072 }
13073
b70709a6 13074 if (state->visible && !old_state->visible) {
32b7eeec
MR		 13075 /*
13076 * BDW signals flip done immediately if the plane
13077 * is disabled, even if the plane enable is already
13078 * armed to occur at the next vblank :(
13079 */
b70709a6 13080 if (IS_BROADWELL(dev))
32b7eeec
MR		 13081 intel_crtc->atomic.wait_vblank = true;
13082 }
13083
13084 intel_crtc->atomic.fb_bits |=
13085 INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
13086
13087 intel_crtc->atomic.update_fbc = true;
0fda6568 13088
1fc0a8f7 13089 if (intel_wm_need_update(plane, &state->base))
0fda6568 13090 intel_crtc->atomic.update_wm = true;
ccc759dc
GP		 13091 }
13092
6156a456
CK		 13093 if (INTEL_INFO(dev)->gen >= 9) {
13094 ret = skl_update_scaler_users(intel_crtc, crtc_state,
13095 to_intel_plane(plane), state, 0);
13096 if (ret)
13097 return ret;
13098 }
13099
14af293f
GP		 13100 return 0;
13101}
13102
13103static void
13104intel_commit_primary_plane(struct drm_plane *plane,
13105 struct intel_plane_state *state)
13106{
2b875c22
MR		 13107 struct drm_crtc *crtc = state->base.crtc;
13108 struct drm_framebuffer *fb = state->base.fb;
13109 struct drm_device *dev = plane->dev;
14af293f 13110 struct drm_i915_private *dev_priv = dev->dev_private;
ea2c67bb 13111 struct intel_crtc *intel_crtc;
14af293f
GP		 13112 struct drm_rect *src = &state->src;
13113
ea2c67bb
MR		 13114 crtc = crtc ? crtc : plane->crtc;
13115 intel_crtc = to_intel_crtc(crtc);
cf4c7c12
MR		 13116
13117 plane->fb = fb;
9dc806fc
MR		 13118 crtc->x = src->x1 >> 16;
13119 crtc->y = src->y1 >> 16;
ccc759dc 13120
ccc759dc 13121 if (intel_crtc->active) {
27321ae8 13122 if (state->visible)
ccc759dc
GP		 13123 /* FIXME: kill this fastboot hack */
13124 intel_update_pipe_size(intel_crtc);
465c120c 13125
27321ae8
ML		 13126 dev_priv->display.update_primary_plane(crtc, plane->fb,
13127 crtc->x, crtc->y);
ccc759dc 13128 }
465c120c
MR		 13129}
13130
a8ad0d8e
ML		 13131static void
13132intel_disable_primary_plane(struct drm_plane *plane,
13133 struct drm_crtc *crtc,
13134 bool force)
13135{
13136 struct drm_device *dev = plane->dev;
13137 struct drm_i915_private *dev_priv = dev->dev_private;
13138
a8ad0d8e
ML		 13139 dev_priv->display.update_primary_plane(crtc, NULL, 0, 0);
13140}
13141
32b7eeec 13142static void intel_begin_crtc_commit(struct drm_crtc *crtc)
3c692a41 13143{
32b7eeec 13144 struct drm_device *dev = crtc->dev;
140fd38d 13145 struct drm_i915_private *dev_priv = dev->dev_private;
3c692a41 13146 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
ea2c67bb
MR		 13147 struct intel_plane *intel_plane;
13148 struct drm_plane *p;
13149 unsigned fb_bits = 0;
13150
13151 /* Track fb's for any planes being disabled */
13152 list_for_each_entry(p, &dev->mode_config.plane_list, head) {
13153 intel_plane = to_intel_plane(p);
13154
13155 if (intel_crtc->atomic.disabled_planes &
13156 (1 << drm_plane_index(p))) {
13157 switch (p->type) {
13158 case DRM_PLANE_TYPE_PRIMARY:
13159 fb_bits = INTEL_FRONTBUFFER_PRIMARY(intel_plane->pipe);
13160 break;
13161 case DRM_PLANE_TYPE_CURSOR:
13162 fb_bits = INTEL_FRONTBUFFER_CURSOR(intel_plane->pipe);
13163 break;
13164 case DRM_PLANE_TYPE_OVERLAY:
13165 fb_bits = INTEL_FRONTBUFFER_SPRITE(intel_plane->pipe);
13166 break;
13167 }
3c692a41 13168
ea2c67bb
MR		 13169 mutex_lock(&dev->struct_mutex);
13170 i915_gem_track_fb(intel_fb_obj(p->fb), NULL, fb_bits);
13171 mutex_unlock(&dev->struct_mutex);
13172 }
13173 }
3c692a41 13174
32b7eeec
MR		 13175 if (intel_crtc->atomic.wait_for_flips)
13176 intel_crtc_wait_for_pending_flips(crtc);
3c692a41 13177
32b7eeec
MR		 13178 if (intel_crtc->atomic.disable_fbc)
13179 intel_fbc_disable(dev);
3c692a41 13180
32b7eeec
MR		 13181 if (intel_crtc->atomic.pre_disable_primary)
13182 intel_pre_disable_primary(crtc);
3c692a41 13183
32b7eeec
MR		 13184 if (intel_crtc->atomic.update_wm)
13185 intel_update_watermarks(crtc);
3c692a41 13186
32b7eeec 13187 intel_runtime_pm_get(dev_priv);
3c692a41 13188
c34c9ee4
MR		 13189 /* Perform vblank evasion around commit operation */
13190 if (intel_crtc->active)
13191 intel_crtc->atomic.evade =
13192 intel_pipe_update_start(intel_crtc,
13193 &intel_crtc->atomic.start_vbl_count);
32b7eeec
MR		 13194}
13195
13196static void intel_finish_crtc_commit(struct drm_crtc *crtc)
13197{
13198 struct drm_device *dev = crtc->dev;
13199 struct drm_i915_private *dev_priv = dev->dev_private;
13200 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13201 struct drm_plane *p;
13202
c34c9ee4
MR		 13203 if (intel_crtc->atomic.evade)
13204 intel_pipe_update_end(intel_crtc,
13205 intel_crtc->atomic.start_vbl_count);
3c692a41 13206
140fd38d 13207 intel_runtime_pm_put(dev_priv);
3c692a41 13208
32b7eeec
MR		 13209 if (intel_crtc->atomic.wait_vblank)
13210 intel_wait_for_vblank(dev, intel_crtc->pipe);
13211
13212 intel_frontbuffer_flip(dev, intel_crtc->atomic.fb_bits);
13213
13214 if (intel_crtc->atomic.update_fbc) {
ccc759dc 13215 mutex_lock(&dev->struct_mutex);
7ff0ebcc 13216 intel_fbc_update(dev);
ccc759dc 13217 mutex_unlock(&dev->struct_mutex);
38f3ce3a 13218 }
3c692a41 13219
32b7eeec
MR		 13220 if (intel_crtc->atomic.post_enable_primary)
13221 intel_post_enable_primary(crtc);
3c692a41 13222
32b7eeec
MR		 13223 drm_for_each_legacy_plane(p, &dev->mode_config.plane_list)
13224 if (intel_crtc->atomic.update_sprite_watermarks & drm_plane_index(p))
13225 intel_update_sprite_watermarks(p, crtc, 0, 0, 0,
13226 false, false);
13227
13228 memset(&intel_crtc->atomic, 0, sizeof(intel_crtc->atomic));
3c692a41
GP		 13229}
13230
cf4c7c12 13231/**
4a3b8769
MR		 13232 * intel_plane_destroy - destroy a plane
13233 * @plane: plane to destroy
cf4c7c12 13234 *
4a3b8769
MR		 13235 * Common destruction function for all types of planes (primary, cursor,
13236 * sprite).
cf4c7c12 13237 */
4a3b8769 13238void intel_plane_destroy(struct drm_plane *plane)
465c120c
MR		 13239{
13240 struct intel_plane *intel_plane = to_intel_plane(plane);
13241 drm_plane_cleanup(plane);
13242 kfree(intel_plane);
13243}
13244
65a3fea0 13245const struct drm_plane_funcs intel_plane_funcs = {
70a101f8
MR		 13246 .update_plane = drm_atomic_helper_update_plane,
13247 .disable_plane = drm_atomic_helper_disable_plane,
3d7d6510 13248 .destroy = intel_plane_destroy,
c196e1d6 13249 .set_property = drm_atomic_helper_plane_set_property,
a98b3431
MR		 13250 .atomic_get_property = intel_plane_atomic_get_property,
13251 .atomic_set_property = intel_plane_atomic_set_property,
ea2c67bb
MR		 13252 .atomic_duplicate_state = intel_plane_duplicate_state,
13253 .atomic_destroy_state = intel_plane_destroy_state,
13254
465c120c
MR		 13255};
13256
13257static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
13258 int pipe)
13259{
13260 struct intel_plane *primary;
8e7d688b 13261 struct intel_plane_state *state;
465c120c
MR		 13262 const uint32_t *intel_primary_formats;
13263 int num_formats;
13264
13265 primary = kzalloc(sizeof(*primary), GFP_KERNEL);
13266 if (primary == NULL)
13267 return NULL;
13268
8e7d688b
MR		 13269 state = intel_create_plane_state(&primary->base);
13270 if (!state) {
ea2c67bb
MR		 13271 kfree(primary);
13272 return NULL;
13273 }
8e7d688b 13274 primary->base.state = &state->base;
ea2c67bb 13275
465c120c
MR		 13276 primary->can_scale = false;
13277 primary->max_downscale = 1;
6156a456
CK		 13278 if (INTEL_INFO(dev)->gen >= 9) {
13279 primary->can_scale = true;
13280 }
549e2bfb 13281 state->scaler_id = -1;
465c120c
MR		 13282 primary->pipe = pipe;
13283 primary->plane = pipe;
c59cb179
MR		 13284 primary->check_plane = intel_check_primary_plane;
13285 primary->commit_plane = intel_commit_primary_plane;
a8ad0d8e 13286 primary->disable_plane = intel_disable_primary_plane;
08e221fb 13287 primary->ckey.flags = I915_SET_COLORKEY_NONE;
465c120c
MR		 13288 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
13289 primary->plane = !pipe;
13290
13291 if (INTEL_INFO(dev)->gen <= 3) {
13292 intel_primary_formats = intel_primary_formats_gen2;
13293 num_formats = ARRAY_SIZE(intel_primary_formats_gen2);
13294 } else {
13295 intel_primary_formats = intel_primary_formats_gen4;
13296 num_formats = ARRAY_SIZE(intel_primary_formats_gen4);
13297 }
13298
13299 drm_universal_plane_init(dev, &primary->base, 0,
65a3fea0 13300 &intel_plane_funcs,
465c120c
MR		 13301 intel_primary_formats, num_formats,
13302 DRM_PLANE_TYPE_PRIMARY);
48404c1e 13303
3b7a5119
SJ		 13304 if (INTEL_INFO(dev)->gen >= 4)
13305 intel_create_rotation_property(dev, primary);
48404c1e 13306
ea2c67bb
MR		 13307 drm_plane_helper_add(&primary->base, &intel_plane_helper_funcs);
13308
465c120c
MR		 13309 return &primary->base;
13310}
13311
3b7a5119
SJ		 13312void intel_create_rotation_property(struct drm_device *dev, struct intel_plane *plane)
13313{
13314 if (!dev->mode_config.rotation_property) {
13315 unsigned long flags = BIT(DRM_ROTATE_0) |
13316 BIT(DRM_ROTATE_180);
13317
13318 if (INTEL_INFO(dev)->gen >= 9)
13319 flags |= BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270);
13320
13321 dev->mode_config.rotation_property =
13322 drm_mode_create_rotation_property(dev, flags);
13323 }
13324 if (dev->mode_config.rotation_property)
13325 drm_object_attach_property(&plane->base.base,
13326 dev->mode_config.rotation_property,
13327 plane->base.state->rotation);
13328}
13329
3d7d6510 13330static int
852e787c
GP		 13331intel_check_cursor_plane(struct drm_plane *plane,
13332 struct intel_plane_state *state)
3d7d6510 13333{
2b875c22 13334 struct drm_crtc *crtc = state->base.crtc;
ea2c67bb 13335 struct drm_device *dev = plane->dev;
2b875c22 13336 struct drm_framebuffer *fb = state->base.fb;
852e787c
GP		 13337 struct drm_rect *dest = &state->dst;
13338 struct drm_rect *src = &state->src;
13339 const struct drm_rect *clip = &state->clip;
757f9a3e 13340 struct drm_i915_gem_object *obj = intel_fb_obj(fb);
ea2c67bb 13341 struct intel_crtc *intel_crtc;
757f9a3e
GP		 13342 unsigned stride;
13343 int ret;
3d7d6510 13344
ea2c67bb
MR		 13345 crtc = crtc ? crtc : plane->crtc;
13346 intel_crtc = to_intel_crtc(crtc);
13347
757f9a3e 13348 ret = drm_plane_helper_check_update(plane, crtc, fb,
852e787c 13349 src, dest, clip,
3d7d6510
MR		 13350 DRM_PLANE_HELPER_NO_SCALING,
13351 DRM_PLANE_HELPER_NO_SCALING,
852e787c 13352 true, true, &state->visible);
757f9a3e
GP		 13353 if (ret)
13354 return ret;
13355
13356
13357 /* if we want to turn off the cursor ignore width and height */
13358 if (!obj)
32b7eeec 13359 goto finish;
757f9a3e 13360
757f9a3e 13361 /* Check for which cursor types we support */
ea2c67bb
MR		 13362 if (!cursor_size_ok(dev, state->base.crtc_w, state->base.crtc_h)) {
13363 DRM_DEBUG("Cursor dimension %dx%d not supported\n",
13364 state->base.crtc_w, state->base.crtc_h);
757f9a3e
GP		 13365 return -EINVAL;
13366 }
13367
ea2c67bb
MR		 13368 stride = roundup_pow_of_two(state->base.crtc_w) * 4;
13369 if (obj->base.size < stride * state->base.crtc_h) {
757f9a3e
GP		 13370 DRM_DEBUG_KMS("buffer is too small\n");
13371 return -ENOMEM;
13372 }
13373
3a656b54 13374 if (fb->modifier[0] != DRM_FORMAT_MOD_NONE) {
757f9a3e
GP		 13375 DRM_DEBUG_KMS("cursor cannot be tiled\n");
13376 ret = -EINVAL;
13377 }
757f9a3e 13378
32b7eeec
MR		 13379finish:
13380 if (intel_crtc->active) {
3749f463 13381 if (plane->state->crtc_w != state->base.crtc_w)
32b7eeec
MR		 13382 intel_crtc->atomic.update_wm = true;
13383
13384 intel_crtc->atomic.fb_bits |=
13385 INTEL_FRONTBUFFER_CURSOR(intel_crtc->pipe);
13386 }
13387
757f9a3e 13388 return ret;
852e787c 13389}
3d7d6510 13390
a8ad0d8e
ML		 13391static void
13392intel_disable_cursor_plane(struct drm_plane *plane,
13393 struct drm_crtc *crtc,
13394 bool force)
13395{
13396 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
13397
13398 if (!force) {
13399 plane->fb = NULL;
13400 intel_crtc->cursor_bo = NULL;
13401 intel_crtc->cursor_addr = 0;
13402 }
13403
13404 intel_crtc_update_cursor(crtc, false);
13405}
13406
f4a2cf29 13407static void
852e787c
GP		 13408intel_commit_cursor_plane(struct drm_plane *plane,
13409 struct intel_plane_state *state)
13410{
2b875c22 13411 struct drm_crtc *crtc = state->base.crtc;
ea2c67bb
MR		 13412 struct drm_device *dev = plane->dev;
13413 struct intel_crtc *intel_crtc;
2b875c22 13414 struct drm_i915_gem_object *obj = intel_fb_obj(state->base.fb);
a912f12f 13415 uint32_t addr;
852e787c 13416
ea2c67bb
MR		 13417 crtc = crtc ? crtc : plane->crtc;
13418 intel_crtc = to_intel_crtc(crtc);
13419
2b875c22 13420 plane->fb = state->base.fb;
ea2c67bb
MR		 13421 crtc->cursor_x = state->base.crtc_x;
13422 crtc->cursor_y = state->base.crtc_y;
13423
a912f12f
GP		 13424 if (intel_crtc->cursor_bo == obj)
13425 goto update;
4ed91096 13426
f4a2cf29 13427 if (!obj)
a912f12f 13428 addr = 0;
f4a2cf29 13429 else if (!INTEL_INFO(dev)->cursor_needs_physical)
a912f12f 13430 addr = i915_gem_obj_ggtt_offset(obj);
f4a2cf29 13431 else
a912f12f 13432 addr = obj->phys_handle->busaddr;
852e787c 13433
a912f12f
GP		 13434 intel_crtc->cursor_addr = addr;
13435 intel_crtc->cursor_bo = obj;
13436update:
852e787c 13437
32b7eeec 13438 if (intel_crtc->active)
a912f12f 13439 intel_crtc_update_cursor(crtc, state->visible);
852e787c
GP		 13440}
13441
3d7d6510
MR		 13442static struct drm_plane *intel_cursor_plane_create(struct drm_device *dev,
13443 int pipe)
13444{
13445 struct intel_plane *cursor;
8e7d688b 13446 struct intel_plane_state *state;
3d7d6510
MR		 13447
13448 cursor = kzalloc(sizeof(*cursor), GFP_KERNEL);
13449 if (cursor == NULL)
13450 return NULL;
13451
8e7d688b
MR		 13452 state = intel_create_plane_state(&cursor->base);
13453 if (!state) {
ea2c67bb
MR		 13454 kfree(cursor);
13455 return NULL;
13456 }
8e7d688b 13457 cursor->base.state = &state->base;
ea2c67bb 13458
3d7d6510
MR		 13459 cursor->can_scale = false;
13460 cursor->max_downscale = 1;
13461 cursor->pipe = pipe;
13462 cursor->plane = pipe;
549e2bfb 13463 state->scaler_id = -1;
c59cb179
MR		 13464 cursor->check_plane = intel_check_cursor_plane;
13465 cursor->commit_plane = intel_commit_cursor_plane;
a8ad0d8e 13466 cursor->disable_plane = intel_disable_cursor_plane;
3d7d6510
MR		 13467
13468 drm_universal_plane_init(dev, &cursor->base, 0,
65a3fea0 13469 &intel_plane_funcs,
3d7d6510
MR		 13470 intel_cursor_formats,
13471 ARRAY_SIZE(intel_cursor_formats),
13472 DRM_PLANE_TYPE_CURSOR);
4398ad45
VS		 13473
13474 if (INTEL_INFO(dev)->gen >= 4) {
13475 if (!dev->mode_config.rotation_property)
13476 dev->mode_config.rotation_property =
13477 drm_mode_create_rotation_property(dev,
13478 BIT(DRM_ROTATE_0) |
13479 BIT(DRM_ROTATE_180));
13480 if (dev->mode_config.rotation_property)
13481 drm_object_attach_property(&cursor->base.base,
13482 dev->mode_config.rotation_property,
8e7d688b 13483 state->base.rotation);
4398ad45
VS		 13484 }
13485
ea2c67bb
MR		 13486 drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
13487
3d7d6510
MR		 13488 return &cursor->base;
13489}
13490
549e2bfb
CK		 13491static void skl_init_scalers(struct drm_device *dev, struct intel_crtc *intel_crtc,
13492 struct intel_crtc_state *crtc_state)
13493{
13494 int i;
13495 struct intel_scaler *intel_scaler;
13496 struct intel_crtc_scaler_state *scaler_state = &crtc_state->scaler_state;
13497
13498 for (i = 0; i < intel_crtc->num_scalers; i++) {
13499 intel_scaler = &scaler_state->scalers[i];
13500 intel_scaler->in_use = 0;
13501 intel_scaler->id = i;
13502
13503 intel_scaler->mode = PS_SCALER_MODE_DYN;
13504 }
13505
13506 scaler_state->scaler_id = -1;
13507}
13508
b358d0a6 13509static void intel_crtc_init(struct drm_device *dev, int pipe)
79e53945 13510{
fbee40df 13511 struct drm_i915_private *dev_priv = dev->dev_private;
79e53945 13512 struct intel_crtc *intel_crtc;
f5de6e07 13513 struct intel_crtc_state *crtc_state = NULL;
3d7d6510
MR		 13514 struct drm_plane *primary = NULL;
13515 struct drm_plane *cursor = NULL;
465c120c 13516 int i, ret;
79e53945 13517
955382f3 13518 intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
79e53945
JB		 13519 if (intel_crtc == NULL)
13520 return;
13521
f5de6e07
ACO		 13522 crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
13523 if (!crtc_state)
13524 goto fail;
13525 intel_crtc_set_state(intel_crtc, crtc_state);
07878248 13526 crtc_state->base.crtc = &intel_crtc->base;
f5de6e07 13527
549e2bfb
CK		 13528 /* initialize shared scalers */
13529 if (INTEL_INFO(dev)->gen >= 9) {
13530 if (pipe == PIPE_C)
13531 intel_crtc->num_scalers = 1;
13532 else
13533 intel_crtc->num_scalers = SKL_NUM_SCALERS;
13534
13535 skl_init_scalers(dev, intel_crtc, crtc_state);
13536 }
13537
465c120c 13538 primary = intel_primary_plane_create(dev, pipe);
3d7d6510
MR		 13539 if (!primary)
13540 goto fail;
13541
13542 cursor = intel_cursor_plane_create(dev, pipe);
13543 if (!cursor)
13544 goto fail;
13545
465c120c 13546 ret = drm_crtc_init_with_planes(dev, &intel_crtc->base, primary,
3d7d6510
MR		 13547 cursor, &intel_crtc_funcs);
13548 if (ret)
13549 goto fail;
79e53945
JB		 13550
13551 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
79e53945
JB		 13552 for (i = 0; i < 256; i++) {
13553 intel_crtc->lut_r[i] = i;
13554 intel_crtc->lut_g[i] = i;
13555 intel_crtc->lut_b[i] = i;
13556 }
13557
1f1c2e24
VS		 13558 /*
13559 * On gen2/3 only plane A can do fbc, but the panel fitter and lvds port
8c0f92e1 13560 * is hooked to pipe B. Hence we want plane A feeding pipe B.
1f1c2e24 13561 */
80824003
JB		 13562 intel_crtc->pipe = pipe;
13563 intel_crtc->plane = pipe;
3a77c4c4 13564 if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4) {
28c97730 13565 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
e2e767ab 13566 intel_crtc->plane = !pipe;
80824003
JB		 13567 }
13568
4b0e333e
CW		 13569 intel_crtc->cursor_base = ~0;
13570 intel_crtc->cursor_cntl = ~0;
dc41c154 13571 intel_crtc->cursor_size = ~0;
8d7849db 13572
22fd0fab
JB		 13573 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
13574 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
13575 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
13576 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
13577
9362c7c5
ACO		 13578 INIT_WORK(&intel_crtc->mmio_flip.work, intel_mmio_flip_work_func);
13579
79e53945 13580 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
87b6b101
DV		 13581
13582 WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
3d7d6510
MR		 13583 return;
13584
13585fail:
13586 if (primary)
13587 drm_plane_cleanup(primary);
13588 if (cursor)
13589 drm_plane_cleanup(cursor);
f5de6e07 13590 kfree(crtc_state);
3d7d6510 13591 kfree(intel_crtc);
79e53945
JB		 13592}
13593
752aa88a
JB		 13594enum pipe intel_get_pipe_from_connector(struct intel_connector *connector)
13595{
13596 struct drm_encoder *encoder = connector->base.encoder;
6e9f798d 13597 struct drm_device *dev = connector->base.dev;
752aa88a 13598
51fd371b 13599 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
752aa88a 13600
d3babd3f 13601 if (!encoder || WARN_ON(!encoder->crtc))
752aa88a
JB		 13602 return INVALID_PIPE;
13603
13604 return to_intel_crtc(encoder->crtc)->pipe;
13605}
13606
08d7b3d1 13607int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
05394f39 13608 struct drm_file *file)
08d7b3d1 13609{
08d7b3d1 13610 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
7707e653 13611 struct drm_crtc *drmmode_crtc;
c05422d5 13612 struct intel_crtc *crtc;
08d7b3d1 13613
7707e653 13614 drmmode_crtc = drm_crtc_find(dev, pipe_from_crtc_id->crtc_id);
08d7b3d1 13615
7707e653 13616 if (!drmmode_crtc) {
08d7b3d1 13617 DRM_ERROR("no such CRTC id\n");
3f2c2057 13618 return -ENOENT;
08d7b3d1
CW		 13619 }
13620
7707e653 13621 crtc = to_intel_crtc(drmmode_crtc);
c05422d5 13622 pipe_from_crtc_id->pipe = crtc->pipe;
08d7b3d1 13623
c05422d5 13624 return 0;
08d7b3d1
CW		 13625}
13626
66a9278e 13627static int intel_encoder_clones(struct intel_encoder *encoder)
79e53945 13628{
66a9278e
DV		 13629 struct drm_device *dev = encoder->base.dev;
13630 struct intel_encoder *source_encoder;
79e53945 13631 int index_mask = 0;
79e53945
JB		 13632 int entry = 0;
13633
b2784e15 13634 for_each_intel_encoder(dev, source_encoder) {
bc079e8b 13635 if (encoders_cloneable(encoder, source_encoder))
66a9278e
DV		 13636 index_mask |= (1 << entry);
13637
79e53945
JB		 13638 entry++;
13639 }
4ef69c7a 13640
79e53945
JB		 13641 return index_mask;
13642}
13643
4d302442
CW		 13644static bool has_edp_a(struct drm_device *dev)
13645{
13646 struct drm_i915_private *dev_priv = dev->dev_private;
13647
13648 if (!IS_MOBILE(dev))
13649 return false;
13650
13651 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
13652 return false;
13653
e3589908 13654 if (IS_GEN5(dev) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
4d302442
CW		 13655 return false;
13656
13657 return true;
13658}
13659
84b4e042
JB		 13660static bool intel_crt_present(struct drm_device *dev)
13661{
13662 struct drm_i915_private *dev_priv = dev->dev_private;
13663
884497ed
DL		 13664 if (INTEL_INFO(dev)->gen >= 9)
13665 return false;
13666
cf404ce4 13667 if (IS_HSW_ULT(dev) || IS_BDW_ULT(dev))
84b4e042
JB		 13668 return false;
13669
13670 if (IS_CHERRYVIEW(dev))
13671 return false;
13672
13673 if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support)
13674 return false;
13675
13676 return true;
13677}
13678
79e53945
JB		 13679static void intel_setup_outputs(struct drm_device *dev)
13680{
725e30ad 13681 struct drm_i915_private *dev_priv = dev->dev_private;
4ef69c7a 13682 struct intel_encoder *encoder;
cb0953d7 13683 bool dpd_is_edp = false;
79e53945 13684
c9093354 13685 intel_lvds_init(dev);
79e53945 13686
84b4e042 13687 if (intel_crt_present(dev))
79935fca 13688 intel_crt_init(dev);
cb0953d7 13689
c776eb2e
VK		 13690 if (IS_BROXTON(dev)) {
13691 /*
13692 * FIXME: Broxton doesn't support port detection via the
13693 * DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
13694 * detect the ports.
13695 */
13696 intel_ddi_init(dev, PORT_A);
13697 intel_ddi_init(dev, PORT_B);
13698 intel_ddi_init(dev, PORT_C);
13699 } else if (HAS_DDI(dev)) {
0e72a5b5
ED		 13700 int found;
13701
de31facd
JB		 13702 /*
13703 * Haswell uses DDI functions to detect digital outputs.
13704 * On SKL pre-D0 the strap isn't connected, so we assume
13705 * it's there.
13706 */
0e72a5b5 13707 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
de31facd
JB		 13708 /* WaIgnoreDDIAStrap: skl */
13709 if (found ||
13710 (IS_SKYLAKE(dev) && INTEL_REVID(dev) < SKL_REVID_D0))
0e72a5b5
ED		 13711 intel_ddi_init(dev, PORT_A);
13712
13713 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
13714 * register */
13715 found = I915_READ(SFUSE_STRAP);
13716
13717 if (found & SFUSE_STRAP_DDIB_DETECTED)
13718 intel_ddi_init(dev, PORT_B);
13719 if (found & SFUSE_STRAP_DDIC_DETECTED)
13720 intel_ddi_init(dev, PORT_C);
13721 if (found & SFUSE_STRAP_DDID_DETECTED)
13722 intel_ddi_init(dev, PORT_D);
13723 } else if (HAS_PCH_SPLIT(dev)) {
cb0953d7 13724 int found;
5d8a7752 13725 dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
270b3042
DV		 13726
13727 if (has_edp_a(dev))
13728 intel_dp_init(dev, DP_A, PORT_A);
cb0953d7 13729
dc0fa718 13730 if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
461ed3ca 13731 /* PCH SDVOB multiplex with HDMIB */
eef4eacb 13732 found = intel_sdvo_init(dev, PCH_SDVOB, true);
30ad48b7 13733 if (!found)
e2debe91 13734 intel_hdmi_init(dev, PCH_HDMIB, PORT_B);
5eb08b69 13735 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
ab9d7c30 13736 intel_dp_init(dev, PCH_DP_B, PORT_B);
30ad48b7
ZW		 13737 }
13738
dc0fa718 13739 if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
e2debe91 13740 intel_hdmi_init(dev, PCH_HDMIC, PORT_C);
30ad48b7 13741
dc0fa718 13742 if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
e2debe91 13743 intel_hdmi_init(dev, PCH_HDMID, PORT_D);
30ad48b7 13744
5eb08b69 13745 if (I915_READ(PCH_DP_C) & DP_DETECTED)
ab9d7c30 13746 intel_dp_init(dev, PCH_DP_C, PORT_C);
5eb08b69 13747
270b3042 13748 if (I915_READ(PCH_DP_D) & DP_DETECTED)
ab9d7c30 13749 intel_dp_init(dev, PCH_DP_D, PORT_D);
4a87d65d 13750 } else if (IS_VALLEYVIEW(dev)) {
e17ac6db
VS		 13751 /*
13752 * The DP_DETECTED bit is the latched state of the DDC
13753 * SDA pin at boot. However since eDP doesn't require DDC
13754 * (no way to plug in a DP->HDMI dongle) the DDC pins for
13755 * eDP ports may have been muxed to an alternate function.
13756 * Thus we can't rely on the DP_DETECTED bit alone to detect
13757 * eDP ports. Consult the VBT as well as DP_DETECTED to
13758 * detect eDP ports.
13759 */
d2182a66
VS		 13760 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED &&
13761 !intel_dp_is_edp(dev, PORT_B))
585a94b8
AB		 13762 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB,
13763 PORT_B);
e17ac6db
VS		 13764 if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED ||
13765 intel_dp_is_edp(dev, PORT_B))
13766 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B);
585a94b8 13767
d2182a66
VS		 13768 if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED &&
13769 !intel_dp_is_edp(dev, PORT_C))
6f6005a5
JB		 13770 intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC,
13771 PORT_C);
e17ac6db
VS		 13772 if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED ||
13773 intel_dp_is_edp(dev, PORT_C))
13774 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C);
19c03924 13775
9418c1f1 13776 if (IS_CHERRYVIEW(dev)) {
e17ac6db 13777 if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED)
9418c1f1
VS		 13778 intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID,
13779 PORT_D);
e17ac6db
VS		 13780 /* eDP not supported on port D, so don't check VBT */
13781 if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED)
13782 intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D);
9418c1f1
VS		 13783 }
13784
3cfca973 13785 intel_dsi_init(dev);
103a196f 13786 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
27185ae1 13787 bool found = false;
7d57382e 13788
e2debe91 13789 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
b01f2c3a 13790 DRM_DEBUG_KMS("probing SDVOB\n");
e2debe91 13791 found = intel_sdvo_init(dev, GEN3_SDVOB, true);
b01f2c3a
JB		 13792 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
13793 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
e2debe91 13794 intel_hdmi_init(dev, GEN4_HDMIB, PORT_B);
b01f2c3a 13795 }
27185ae1 13796
e7281eab 13797 if (!found && SUPPORTS_INTEGRATED_DP(dev))
ab9d7c30 13798 intel_dp_init(dev, DP_B, PORT_B);
725e30ad 13799 }
13520b05
KH		 13800
13801 /* Before G4X SDVOC doesn't have its own detect register */
13520b05 13802
e2debe91 13803 if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
b01f2c3a 13804 DRM_DEBUG_KMS("probing SDVOC\n");
e2debe91 13805 found = intel_sdvo_init(dev, GEN3_SDVOC, false);
b01f2c3a 13806 }
27185ae1 13807
e2debe91 13808 if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
27185ae1 13809
b01f2c3a
JB		 13810 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
13811 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
e2debe91 13812 intel_hdmi_init(dev, GEN4_HDMIC, PORT_C);
b01f2c3a 13813 }
e7281eab 13814 if (SUPPORTS_INTEGRATED_DP(dev))
ab9d7c30 13815 intel_dp_init(dev, DP_C, PORT_C);
725e30ad 13816 }
27185ae1 13817
b01f2c3a 13818 if (SUPPORTS_INTEGRATED_DP(dev) &&
e7281eab 13819 (I915_READ(DP_D) & DP_DETECTED))
ab9d7c30 13820 intel_dp_init(dev, DP_D, PORT_D);
bad720ff 13821 } else if (IS_GEN2(dev))
79e53945
JB		 13822 intel_dvo_init(dev);
13823
103a196f 13824 if (SUPPORTS_TV(dev))
79e53945
JB		 13825 intel_tv_init(dev);
13826
0bc12bcb 13827 intel_psr_init(dev);
7c8f8a70 13828
b2784e15 13829 for_each_intel_encoder(dev, encoder) {
4ef69c7a
CW		 13830 encoder->base.possible_crtcs = encoder->crtc_mask;
13831 encoder->base.possible_clones =
66a9278e 13832 intel_encoder_clones(encoder);
79e53945 13833 }
47356eb6 13834
dde86e2d 13835 intel_init_pch_refclk(dev);
270b3042
DV		 13836
13837 drm_helper_move_panel_connectors_to_head(dev);
79e53945
JB		 13838}
13839
13840static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
13841{
60a5ca01 13842 struct drm_device *dev = fb->dev;
79e53945 13843 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
79e53945 13844
ef2d633e 13845 drm_framebuffer_cleanup(fb);
60a5ca01 13846 mutex_lock(&dev->struct_mutex);
ef2d633e 13847 WARN_ON(!intel_fb->obj->framebuffer_references--);
60a5ca01
VS		 13848 drm_gem_object_unreference(&intel_fb->obj->base);
13849 mutex_unlock(&dev->struct_mutex);
79e53945
JB		 13850 kfree(intel_fb);
13851}
13852
13853static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
05394f39 13854 struct drm_file *file,
79e53945
JB		 13855 unsigned int *handle)
13856{
13857 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
05394f39 13858 struct drm_i915_gem_object *obj = intel_fb->obj;
79e53945 13859
05394f39 13860 return drm_gem_handle_create(file, &obj->base, handle);
79e53945
JB		 13861}
13862
13863static const struct drm_framebuffer_funcs intel_fb_funcs = {
13864 .destroy = intel_user_framebuffer_destroy,
13865 .create_handle = intel_user_framebuffer_create_handle,
13866};
13867
b321803d
DL		 13868static
13869u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
13870 uint32_t pixel_format)
13871{
13872 u32 gen = INTEL_INFO(dev)->gen;
13873
13874 if (gen >= 9) {
13875 /* "The stride in bytes must not exceed the of the size of 8K
13876 * pixels and 32K bytes."
13877 */
13878 return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
13879 } else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
13880 return 32*1024;
13881 } else if (gen >= 4) {
13882 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
13883 return 16*1024;
13884 else
13885 return 32*1024;
13886 } else if (gen >= 3) {
13887 if (fb_modifier == I915_FORMAT_MOD_X_TILED)
13888 return 8*1024;
13889 else
13890 return 16*1024;
13891 } else {
13892 /* XXX DSPC is limited to 4k tiled */
13893 return 8*1024;
13894 }
13895}
13896
b5ea642a
DV		 13897static int intel_framebuffer_init(struct drm_device *dev,
13898 struct intel_framebuffer *intel_fb,
13899 struct drm_mode_fb_cmd2 *mode_cmd,
13900 struct drm_i915_gem_object *obj)
79e53945 13901{
6761dd31 13902 unsigned int aligned_height;
79e53945 13903 int ret;
b321803d 13904 u32 pitch_limit, stride_alignment;
79e53945 13905
dd4916c5
DV		 13906 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
13907
2a80eada
DV		 13908 if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
13909 /* Enforce that fb modifier and tiling mode match, but only for
13910 * X-tiled. This is needed for FBC. */
13911 if (!!(obj->tiling_mode == I915_TILING_X) !=
13912 !!(mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)) {
13913 DRM_DEBUG("tiling_mode doesn't match fb modifier\n");
13914 return -EINVAL;
13915 }
13916 } else {
13917 if (obj->tiling_mode == I915_TILING_X)
13918 mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
13919 else if (obj->tiling_mode == I915_TILING_Y) {
13920 DRM_DEBUG("No Y tiling for legacy addfb\n");
13921 return -EINVAL;
13922 }
13923 }
13924
9a8f0a12
TU		 13925 /* Passed in modifier sanity checking. */
13926 switch (mode_cmd->modifier[0]) {
13927 case I915_FORMAT_MOD_Y_TILED:
13928 case I915_FORMAT_MOD_Yf_TILED:
13929 if (INTEL_INFO(dev)->gen < 9) {
13930 DRM_DEBUG("Unsupported tiling 0x%llx!\n",
13931 mode_cmd->modifier[0]);
13932 return -EINVAL;
13933 }
13934 case DRM_FORMAT_MOD_NONE:
13935 case I915_FORMAT_MOD_X_TILED:
13936 break;
13937 default:
c0f40428
JB		 13938 DRM_DEBUG("Unsupported fb modifier 0x%llx!\n",
13939 mode_cmd->modifier[0]);
57cd6508 13940 return -EINVAL;
c16ed4be 13941 }
57cd6508 13942
b321803d
DL		 13943 stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
13944 mode_cmd->pixel_format);
13945 if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
13946 DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
13947 mode_cmd->pitches[0], stride_alignment);
57cd6508 13948 return -EINVAL;
c16ed4be 13949 }
57cd6508 13950
b321803d
DL		 13951 pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
13952 mode_cmd->pixel_format);
a35cdaa0 13953 if (mode_cmd->pitches[0] > pitch_limit) {
b321803d
DL		 13954 DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
13955 mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
2a80eada 13956 "tiled" : "linear",
a35cdaa0 13957 mode_cmd->pitches[0], pitch_limit);
5d7bd705 13958 return -EINVAL;
c16ed4be 13959 }
5d7bd705 13960
2a80eada 13961 if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED &&
c16ed4be
CW		 13962 mode_cmd->pitches[0] != obj->stride) {
13963 DRM_DEBUG("pitch (%d) must match tiling stride (%d)\n",
13964 mode_cmd->pitches[0], obj->stride);
5d7bd705 13965 return -EINVAL;
c16ed4be 13966 }
5d7bd705 13967
57779d06 13968 /* Reject formats not supported by any plane early. */
308e5bcb 13969 switch (mode_cmd->pixel_format) {
57779d06 13970 case DRM_FORMAT_C8:
04b3924d
VS		 13971 case DRM_FORMAT_RGB565:
13972 case DRM_FORMAT_XRGB8888:
13973 case DRM_FORMAT_ARGB8888:
57779d06
VS		 13974 break;
13975 case DRM_FORMAT_XRGB1555:
13976 case DRM_FORMAT_ARGB1555:
c16ed4be 13977 if (INTEL_INFO(dev)->gen > 3) {
4ee62c76
VS		 13978 DRM_DEBUG("unsupported pixel format: %s\n",
13979 drm_get_format_name(mode_cmd->pixel_format));
57779d06 13980 return -EINVAL;
c16ed4be 13981 }
57779d06
VS		 13982 break;
13983 case DRM_FORMAT_XBGR8888:
13984 case DRM_FORMAT_ABGR8888:
04b3924d
VS		 13985 case DRM_FORMAT_XRGB2101010:
13986 case DRM_FORMAT_ARGB2101010:
57779d06
VS		 13987 case DRM_FORMAT_XBGR2101010:
13988 case DRM_FORMAT_ABGR2101010:
c16ed4be 13989 if (INTEL_INFO(dev)->gen < 4) {
4ee62c76
VS		 13990 DRM_DEBUG("unsupported pixel format: %s\n",
13991 drm_get_format_name(mode_cmd->pixel_format));
57779d06 13992 return -EINVAL;
c16ed4be 13993 }
b5626747 13994 break;
04b3924d
VS		 13995 case DRM_FORMAT_YUYV:
13996 case DRM_FORMAT_UYVY:
13997 case DRM_FORMAT_YVYU:
13998 case DRM_FORMAT_VYUY:
c16ed4be 13999 if (INTEL_INFO(dev)->gen < 5) {
4ee62c76
VS		 14000 DRM_DEBUG("unsupported pixel format: %s\n",
14001 drm_get_format_name(mode_cmd->pixel_format));
57779d06 14002 return -EINVAL;
c16ed4be 14003 }
57cd6508
CW		 14004 break;
14005 default:
4ee62c76
VS		 14006 DRM_DEBUG("unsupported pixel format: %s\n",
14007 drm_get_format_name(mode_cmd->pixel_format));
57cd6508
CW		 14008 return -EINVAL;
14009 }
14010
90f9a336
VS		 14011 /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
14012 if (mode_cmd->offsets[0] != 0)
14013 return -EINVAL;
14014
ec2c981e 14015 aligned_height = intel_fb_align_height(dev, mode_cmd->height,
091df6cb
DV		 14016 mode_cmd->pixel_format,
14017 mode_cmd->modifier[0]);
53155c0a
DV		 14018 /* FIXME drm helper for size checks (especially planar formats)? */
14019 if (obj->base.size < aligned_height * mode_cmd->pitches[0])
14020 return -EINVAL;
14021
c7d73f6a
DV		 14022 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
14023 intel_fb->obj = obj;
80075d49 14024 intel_fb->obj->framebuffer_references++;
c7d73f6a 14025
79e53945
JB		 14026 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
14027 if (ret) {
14028 DRM_ERROR("framebuffer init failed %d\n", ret);
14029 return ret;
14030 }
14031
79e53945
JB		 14032 return 0;
14033}
14034
79e53945
JB		 14035static struct drm_framebuffer *
14036intel_user_framebuffer_create(struct drm_device *dev,
14037 struct drm_file *filp,
308e5bcb 14038 struct drm_mode_fb_cmd2 *mode_cmd)
79e53945 14039{
05394f39 14040 struct drm_i915_gem_object *obj;
79e53945 14041
308e5bcb
JB		 14042 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
14043 mode_cmd->handles[0]));
c8725226 14044 if (&obj->base == NULL)
cce13ff7 14045 return ERR_PTR(-ENOENT);
79e53945 14046
d2dff872 14047 return intel_framebuffer_create(dev, mode_cmd, obj);
79e53945
JB		 14048}
14049
4520f53a 14050#ifndef CONFIG_DRM_I915_FBDEV
0632fef6 14051static inline void intel_fbdev_output_poll_changed(struct drm_device *dev)
4520f53a
DV		 14052{
14053}
14054#endif
14055
79e53945 14056static const struct drm_mode_config_funcs intel_mode_funcs = {
79e53945 14057 .fb_create = intel_user_framebuffer_create,
0632fef6 14058 .output_poll_changed = intel_fbdev_output_poll_changed,
5ee67f1c
MR		 14059 .atomic_check = intel_atomic_check,
14060 .atomic_commit = intel_atomic_commit,
79e53945
JB		 14061};
14062
e70236a8
JB		 14063/* Set up chip specific display functions */
14064static void intel_init_display(struct drm_device *dev)
14065{
14066 struct drm_i915_private *dev_priv = dev->dev_private;
14067
ee9300bb
DV		 14068 if (HAS_PCH_SPLIT(dev) || IS_G4X(dev))
14069 dev_priv->display.find_dpll = g4x_find_best_dpll;
ef9348c8
CML		 14070 else if (IS_CHERRYVIEW(dev))
14071 dev_priv->display.find_dpll = chv_find_best_dpll;
ee9300bb
DV		 14072 else if (IS_VALLEYVIEW(dev))
14073 dev_priv->display.find_dpll = vlv_find_best_dpll;
14074 else if (IS_PINEVIEW(dev))
14075 dev_priv->display.find_dpll = pnv_find_best_dpll;
14076 else
14077 dev_priv->display.find_dpll = i9xx_find_best_dpll;
14078
bc8d7dff
DL		 14079 if (INTEL_INFO(dev)->gen >= 9) {
14080 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
5724dbd1
DL		 14081 dev_priv->display.get_initial_plane_config =
14082 skylake_get_initial_plane_config;
bc8d7dff
DL		 14083 dev_priv->display.crtc_compute_clock =
14084 haswell_crtc_compute_clock;
14085 dev_priv->display.crtc_enable = haswell_crtc_enable;
14086 dev_priv->display.crtc_disable = haswell_crtc_disable;
14087 dev_priv->display.off = ironlake_crtc_off;
14088 dev_priv->display.update_primary_plane =
14089 skylake_update_primary_plane;
14090 } else if (HAS_DDI(dev)) {
0e8ffe1b 14091 dev_priv->display.get_pipe_config = haswell_get_pipe_config;
5724dbd1
DL		 14092 dev_priv->display.get_initial_plane_config =
14093 ironlake_get_initial_plane_config;
797d0259
ACO		 14094 dev_priv->display.crtc_compute_clock =
14095 haswell_crtc_compute_clock;
4f771f10
PZ		 14096 dev_priv->display.crtc_enable = haswell_crtc_enable;
14097 dev_priv->display.crtc_disable = haswell_crtc_disable;
df8ad70c 14098 dev_priv->display.off = ironlake_crtc_off;
bc8d7dff
DL		 14099 dev_priv->display.update_primary_plane =
14100 ironlake_update_primary_plane;
09b4ddf9 14101 } else if (HAS_PCH_SPLIT(dev)) {
0e8ffe1b 14102 dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
5724dbd1
DL		 14103 dev_priv->display.get_initial_plane_config =
14104 ironlake_get_initial_plane_config;
3fb37703
ACO		 14105 dev_priv->display.crtc_compute_clock =
14106 ironlake_crtc_compute_clock;
76e5a89c
DV		 14107 dev_priv->display.crtc_enable = ironlake_crtc_enable;
14108 dev_priv->display.crtc_disable = ironlake_crtc_disable;
ee7b9f93 14109 dev_priv->display.off = ironlake_crtc_off;
262ca2b0
MR		 14110 dev_priv->display.update_primary_plane =
14111 ironlake_update_primary_plane;
89b667f8
JB		 14112 } else if (IS_VALLEYVIEW(dev)) {
14113 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
5724dbd1
DL		 14114 dev_priv->display.get_initial_plane_config =
14115 i9xx_get_initial_plane_config;
d6dfee7a 14116 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
89b667f8
JB		 14117 dev_priv->display.crtc_enable = valleyview_crtc_enable;
14118 dev_priv->display.crtc_disable = i9xx_crtc_disable;
14119 dev_priv->display.off = i9xx_crtc_off;
262ca2b0
MR		 14120 dev_priv->display.update_primary_plane =
14121 i9xx_update_primary_plane;
f564048e 14122 } else {
0e8ffe1b 14123 dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
5724dbd1
DL		 14124 dev_priv->display.get_initial_plane_config =
14125 i9xx_get_initial_plane_config;
d6dfee7a 14126 dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
76e5a89c
DV		 14127 dev_priv->display.crtc_enable = i9xx_crtc_enable;
14128 dev_priv->display.crtc_disable = i9xx_crtc_disable;
ee7b9f93 14129 dev_priv->display.off = i9xx_crtc_off;
262ca2b0
MR		 14130 dev_priv->display.update_primary_plane =
14131 i9xx_update_primary_plane;
f564048e 14132 }
e70236a8 14133
e70236a8 14134 /* Returns the core display clock speed */
1652d19e
VS		 14135 if (IS_SKYLAKE(dev))
14136 dev_priv->display.get_display_clock_speed =
14137 skylake_get_display_clock_speed;
14138 else if (IS_BROADWELL(dev))
14139 dev_priv->display.get_display_clock_speed =
14140 broadwell_get_display_clock_speed;
14141 else if (IS_HASWELL(dev))
14142 dev_priv->display.get_display_clock_speed =
14143 haswell_get_display_clock_speed;
14144 else if (IS_VALLEYVIEW(dev))
25eb05fc
JB		 14145 dev_priv->display.get_display_clock_speed =
14146 valleyview_get_display_clock_speed;
b37a6434
VS		 14147 else if (IS_GEN5(dev))
14148 dev_priv->display.get_display_clock_speed =
14149 ilk_get_display_clock_speed;
a7c66cd8
VS		 14150 else if (IS_I945G(dev) || IS_BROADWATER(dev) ||
14151 IS_GEN6(dev) || IS_IVYBRIDGE(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
e70236a8
JB		 14152 dev_priv->display.get_display_clock_speed =
14153 i945_get_display_clock_speed;
14154 else if (IS_I915G(dev))
14155 dev_priv->display.get_display_clock_speed =
14156 i915_get_display_clock_speed;
257a7ffc 14157 else if (IS_I945GM(dev) || IS_845G(dev))
e70236a8
JB		 14158 dev_priv->display.get_display_clock_speed =
14159 i9xx_misc_get_display_clock_speed;
257a7ffc
DV		 14160 else if (IS_PINEVIEW(dev))
14161 dev_priv->display.get_display_clock_speed =
14162 pnv_get_display_clock_speed;
e70236a8
JB		 14163 else if (IS_I915GM(dev))
14164 dev_priv->display.get_display_clock_speed =
14165 i915gm_get_display_clock_speed;
14166 else if (IS_I865G(dev))
14167 dev_priv->display.get_display_clock_speed =
14168 i865_get_display_clock_speed;
f0f8a9ce 14169 else if (IS_I85X(dev))
e70236a8
JB		 14170 dev_priv->display.get_display_clock_speed =
14171 i855_get_display_clock_speed;
14172 else /* 852, 830 */
14173 dev_priv->display.get_display_clock_speed =
14174 i830_get_display_clock_speed;
14175
7c10a2b5 14176 if (IS_GEN5(dev)) {
3bb11b53 14177 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
3bb11b53
SJ		 14178 } else if (IS_GEN6(dev)) {
14179 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
3bb11b53
SJ		 14180 } else if (IS_IVYBRIDGE(dev)) {
14181 /* FIXME: detect B0+ stepping and use auto training */
14182 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
059b2fe9 14183 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
3bb11b53 14184 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
30a970c6
JB		 14185 } else if (IS_VALLEYVIEW(dev)) {
14186 dev_priv->display.modeset_global_resources =
14187 valleyview_modeset_global_resources;
f8437dd1
VK		 14188 } else if (IS_BROXTON(dev)) {
14189 dev_priv->display.modeset_global_resources =
14190 broxton_modeset_global_resources;
e70236a8 14191 }
8c9f3aaf 14192
8c9f3aaf
JB		 14193 switch (INTEL_INFO(dev)->gen) {
14194 case 2:
14195 dev_priv->display.queue_flip = intel_gen2_queue_flip;
14196 break;
14197
14198 case 3:
14199 dev_priv->display.queue_flip = intel_gen3_queue_flip;
14200 break;
14201
14202 case 4:
14203 case 5:
14204 dev_priv->display.queue_flip = intel_gen4_queue_flip;
14205 break;
14206
14207 case 6:
14208 dev_priv->display.queue_flip = intel_gen6_queue_flip;
14209 break;
7c9017e5 14210 case 7:
4e0bbc31 14211 case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
7c9017e5
JB		 14212 dev_priv->display.queue_flip = intel_gen7_queue_flip;
14213 break;
830c81db 14214 case 9:
ba343e02
TU		 14215 /* Drop through - unsupported since execlist only. */
14216 default:
14217 /* Default just returns -ENODEV to indicate unsupported */
14218 dev_priv->display.queue_flip = intel_default_queue_flip;
8c9f3aaf 14219 }
7bd688cd
JN		 14220
14221 intel_panel_init_backlight_funcs(dev);
e39b999a
VS		 14222
14223 mutex_init(&dev_priv->pps_mutex);
e70236a8
JB		 14224}
14225
b690e96c
JB		 14226/*
14227 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
14228 * resume, or other times. This quirk makes sure that's the case for
14229 * affected systems.
14230 */
0206e353 14231static void quirk_pipea_force(struct drm_device *dev)
b690e96c
JB		 14232{
14233 struct drm_i915_private *dev_priv = dev->dev_private;
14234
14235 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
bc0daf48 14236 DRM_INFO("applying pipe a force quirk\n");
b690e96c
JB		 14237}
14238
b6b5d049
VS		 14239static void quirk_pipeb_force(struct drm_device *dev)
14240{
14241 struct drm_i915_private *dev_priv = dev->dev_private;
14242
14243 dev_priv->quirks |= QUIRK_PIPEB_FORCE;
14244 DRM_INFO("applying pipe b force quirk\n");
14245}
14246
435793df
KP		 14247/*
14248 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
14249 */
14250static void quirk_ssc_force_disable(struct drm_device *dev)
14251{
14252 struct drm_i915_private *dev_priv = dev->dev_private;
14253 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
bc0daf48 14254 DRM_INFO("applying lvds SSC disable quirk\n");
435793df
KP		 14255}
14256
4dca20ef 14257/*
5a15ab5b
CE		 14258 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
14259 * brightness value
4dca20ef
CE		 14260 */
14261static void quirk_invert_brightness(struct drm_device *dev)
14262{
14263 struct drm_i915_private *dev_priv = dev->dev_private;
14264 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
bc0daf48 14265 DRM_INFO("applying inverted panel brightness quirk\n");
435793df
KP		 14266}
14267
9c72cc6f
SD		 14268/* Some VBT's incorrectly indicate no backlight is present */
14269static void quirk_backlight_present(struct drm_device *dev)
14270{
14271 struct drm_i915_private *dev_priv = dev->dev_private;
14272 dev_priv->quirks |= QUIRK_BACKLIGHT_PRESENT;
14273 DRM_INFO("applying backlight present quirk\n");
14274}
14275
b690e96c
JB		 14276struct intel_quirk {
14277 int device;
14278 int subsystem_vendor;
14279 int subsystem_device;
14280 void (*hook)(struct drm_device *dev);
14281};
14282
5f85f176
EE		 14283/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
14284struct intel_dmi_quirk {
14285 void (*hook)(struct drm_device *dev);
14286 const struct dmi_system_id (*dmi_id_list)[];
14287};
14288
14289static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
14290{
14291 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
14292 return 1;
14293}
14294
14295static const struct intel_dmi_quirk intel_dmi_quirks[] = {
14296 {
14297 .dmi_id_list = &(const struct dmi_system_id[]) {
14298 {
14299 .callback = intel_dmi_reverse_brightness,
14300 .ident = "NCR Corporation",
14301 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
14302 DMI_MATCH(DMI_PRODUCT_NAME, ""),
14303 },
14304 },
14305 { } /* terminating entry */
14306 },
14307 .hook = quirk_invert_brightness,
14308 },
14309};
14310
c43b5634 14311static struct intel_quirk intel_quirks[] = {
b690e96c 14312 /* HP Mini needs pipe A force quirk (LP: #322104) */
0206e353 14313 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
b690e96c 14314
b690e96c
JB		 14315 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
14316 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
14317
b690e96c
JB		 14318 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
14319 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
14320
5f080c0f
VS		 14321 /* 830 needs to leave pipe A & dpll A up */
14322 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
14323
b6b5d049
VS		 14324 /* 830 needs to leave pipe B & dpll B up */
14325 { 0x3577, PCI_ANY_ID, PCI_ANY_ID, quirk_pipeb_force },
14326
435793df
KP		 14327 /* Lenovo U160 cannot use SSC on LVDS */
14328 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
070d329a
MAS		 14329
14330 /* Sony Vaio Y cannot use SSC on LVDS */
14331 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
5a15ab5b 14332
be505f64
AH		 14333 /* Acer Aspire 5734Z must invert backlight brightness */
14334 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
14335
14336 /* Acer/eMachines G725 */
14337 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
14338
14339 /* Acer/eMachines e725 */
14340 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
14341
14342 /* Acer/Packard Bell NCL20 */
14343 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
14344
14345 /* Acer Aspire 4736Z */
14346 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
0f540c3a
JN		 14347
14348 /* Acer Aspire 5336 */
14349 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
2e93a1aa
SD		 14350
14351 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
14352 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
d4967d8c 14353
dfb3d47b
SD		 14354 /* Acer C720 Chromebook (Core i3 4005U) */
14355 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
14356
b2a9601c 14357 /* Apple Macbook 2,1 (Core 2 T7400) */
14358 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
14359
d4967d8c
SD		 14360 /* Toshiba CB35 Chromebook (Celeron 2955U) */
14361 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
724cb06f
SD		 14362
14363 /* HP Chromebook 14 (Celeron 2955U) */
14364 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
cf6f0af9
JN		 14365
14366 /* Dell Chromebook 11 */
14367 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
b690e96c
JB		 14368};
14369
14370static void intel_init_quirks(struct drm_device *dev)
14371{
14372 struct pci_dev *d = dev->pdev;
14373 int i;
14374
14375 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
14376 struct intel_quirk *q = &intel_quirks[i];
14377
14378 if (d->device == q->device &&
14379 (d->subsystem_vendor == q->subsystem_vendor ||
14380 q->subsystem_vendor == PCI_ANY_ID) &&
14381 (d->subsystem_device == q->subsystem_device ||
14382 q->subsystem_device == PCI_ANY_ID))
14383 q->hook(dev);
14384 }
5f85f176
EE		 14385 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
14386 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
14387 intel_dmi_quirks[i].hook(dev);
14388 }
b690e96c
JB		 14389}
14390
9cce37f4
JB		 14391/* Disable the VGA plane that we never use */
14392static void i915_disable_vga(struct drm_device *dev)
14393{
14394 struct drm_i915_private *dev_priv = dev->dev_private;
14395 u8 sr1;
766aa1c4 14396 u32 vga_reg = i915_vgacntrl_reg(dev);
9cce37f4 14397
2b37c616 14398 /* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
9cce37f4 14399 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
3fdcf431 14400 outb(SR01, VGA_SR_INDEX);
9cce37f4
JB		 14401 sr1 = inb(VGA_SR_DATA);
14402 outb(sr1 | 1<<5, VGA_SR_DATA);
14403 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
14404 udelay(300);
14405
01f5a626 14406 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
9cce37f4
JB		 14407 POSTING_READ(vga_reg);
14408}
14409
f817586c
DV		 14410void intel_modeset_init_hw(struct drm_device *dev)
14411{
a8f78b58
ED		 14412 intel_prepare_ddi(dev);
14413
f8bf63fd
VS		 14414 if (IS_VALLEYVIEW(dev))
14415 vlv_update_cdclk(dev);
14416
f817586c
DV		 14417 intel_init_clock_gating(dev);
14418
8090c6b9 14419 intel_enable_gt_powersave(dev);
f817586c
DV		 14420}
14421
79e53945
JB		 14422void intel_modeset_init(struct drm_device *dev)
14423{
652c393a 14424 struct drm_i915_private *dev_priv = dev->dev_private;
1fe47785 14425 int sprite, ret;
8cc87b75 14426 enum pipe pipe;
46f297fb 14427 struct intel_crtc *crtc;
79e53945
JB		 14428
14429 drm_mode_config_init(dev);
14430
14431 dev->mode_config.min_width = 0;
14432 dev->mode_config.min_height = 0;
14433
019d96cb
DA		 14434 dev->mode_config.preferred_depth = 24;
14435 dev->mode_config.prefer_shadow = 1;
14436
25bab385
TU		 14437 dev->mode_config.allow_fb_modifiers = true;
14438
e6ecefaa 14439 dev->mode_config.funcs = &intel_mode_funcs;
79e53945 14440
b690e96c
JB		 14441 intel_init_quirks(dev);
14442
1fa61106
ED		 14443 intel_init_pm(dev);
14444
e3c74757
BW		 14445 if (INTEL_INFO(dev)->num_pipes == 0)
14446 return;
14447
e70236a8 14448 intel_init_display(dev);
7c10a2b5 14449 intel_init_audio(dev);
e70236a8 14450
a6c45cf0
CW		 14451 if (IS_GEN2(dev)) {
14452 dev->mode_config.max_width = 2048;
14453 dev->mode_config.max_height = 2048;
14454 } else if (IS_GEN3(dev)) {
5e4d6fa7
KP		 14455 dev->mode_config.max_width = 4096;
14456 dev->mode_config.max_height = 4096;
79e53945 14457 } else {
a6c45cf0
CW		 14458 dev->mode_config.max_width = 8192;
14459 dev->mode_config.max_height = 8192;
79e53945 14460 }
068be561 14461
dc41c154
VS		 14462 if (IS_845G(dev) || IS_I865G(dev)) {
14463 dev->mode_config.cursor_width = IS_845G(dev) ? 64 : 512;
14464 dev->mode_config.cursor_height = 1023;
14465 } else if (IS_GEN2(dev)) {
068be561
DL		 14466 dev->mode_config.cursor_width = GEN2_CURSOR_WIDTH;
14467 dev->mode_config.cursor_height = GEN2_CURSOR_HEIGHT;
14468 } else {
14469 dev->mode_config.cursor_width = MAX_CURSOR_WIDTH;
14470 dev->mode_config.cursor_height = MAX_CURSOR_HEIGHT;
14471 }
14472
5d4545ae 14473 dev->mode_config.fb_base = dev_priv->gtt.mappable_base;
79e53945 14474
28c97730 14475 DRM_DEBUG_KMS("%d display pipe%s available.\n",
7eb552ae
BW		 14476 INTEL_INFO(dev)->num_pipes,
14477 INTEL_INFO(dev)->num_pipes > 1 ? "s" : "");
79e53945 14478
055e393f 14479 for_each_pipe(dev_priv, pipe) {
8cc87b75 14480 intel_crtc_init(dev, pipe);
3bdcfc0c 14481 for_each_sprite(dev_priv, pipe, sprite) {
1fe47785 14482 ret = intel_plane_init(dev, pipe, sprite);
7f1f3851 14483 if (ret)
06da8da2 14484 DRM_DEBUG_KMS("pipe %c sprite %c init failed: %d\n",
1fe47785 14485 pipe_name(pipe), sprite_name(pipe, sprite), ret);
7f1f3851 14486 }
79e53945
JB		 14487 }
14488
f42bb70d
JB		 14489 intel_init_dpio(dev);
14490
e72f9fbf 14491 intel_shared_dpll_init(dev);
ee7b9f93 14492
9cce37f4
JB		 14493 /* Just disable it once at startup */
14494 i915_disable_vga(dev);
79e53945 14495 intel_setup_outputs(dev);
11be49eb
CW		 14496
14497 /* Just in case the BIOS is doing something questionable. */
7ff0ebcc 14498 intel_fbc_disable(dev);
fa9fa083 14499
6e9f798d 14500 drm_modeset_lock_all(dev);
fa9fa083 14501 intel_modeset_setup_hw_state(dev, false);
6e9f798d 14502 drm_modeset_unlock_all(dev);
46f297fb 14503
d3fcc808 14504 for_each_intel_crtc(dev, crtc) {
46f297fb
JB		 14505 if (!crtc->active)
14506 continue;
14507
46f297fb 14508 /*
46f297fb
JB		 14509 * Note that reserving the BIOS fb up front prevents us
14510 * from stuffing other stolen allocations like the ring
14511 * on top. This prevents some ugliness at boot time, and
14512 * can even allow for smooth boot transitions if the BIOS
14513 * fb is large enough for the active pipe configuration.
14514 */
5724dbd1
DL		 14515 if (dev_priv->display.get_initial_plane_config) {
14516 dev_priv->display.get_initial_plane_config(crtc,
46f297fb
JB		 14517 &crtc->plane_config);
14518 /*
14519 * If the fb is shared between multiple heads, we'll
14520 * just get the first one.
14521 */
f6936e29 14522 intel_find_initial_plane_obj(crtc, &crtc->plane_config);
46f297fb 14523 }
46f297fb 14524 }
2c7111db
CW		 14525}
14526
7fad798e
DV		 14527static void intel_enable_pipe_a(struct drm_device *dev)
14528{
14529 struct intel_connector *connector;
14530 struct drm_connector *crt = NULL;
14531 struct intel_load_detect_pipe load_detect_temp;
208bf9fd 14532 struct drm_modeset_acquire_ctx *ctx = dev->mode_config.acquire_ctx;
7fad798e
DV		 14533
14534 /* We can't just switch on the pipe A, we need to set things up with a
14535 * proper mode and output configuration. As a gross hack, enable pipe A
14536 * by enabling the load detect pipe once. */
3a3371ff 14537 for_each_intel_connector(dev, connector) {
7fad798e
DV		 14538 if (connector->encoder->type == INTEL_OUTPUT_ANALOG) {
14539 crt = &connector->base;
14540 break;
14541 }
14542 }
14543
14544 if (!crt)
14545 return;
14546
208bf9fd 14547 if (intel_get_load_detect_pipe(crt, NULL, &load_detect_temp, ctx))
49172fee 14548 intel_release_load_detect_pipe(crt, &load_detect_temp, ctx);
7fad798e
DV		 14549}
14550
fa555837
DV		 14551static bool
14552intel_check_plane_mapping(struct intel_crtc *crtc)
14553{
7eb552ae
BW		 14554 struct drm_device *dev = crtc->base.dev;
14555 struct drm_i915_private *dev_priv = dev->dev_private;
fa555837
DV		 14556 u32 reg, val;
14557
7eb552ae 14558 if (INTEL_INFO(dev)->num_pipes == 1)
fa555837
DV		 14559 return true;
14560
14561 reg = DSPCNTR(!crtc->plane);
14562 val = I915_READ(reg);
14563
14564 if ((val & DISPLAY_PLANE_ENABLE) &&
14565 (!!(val & DISPPLANE_SEL_PIPE_MASK) == crtc->pipe))
14566 return false;
14567
14568 return true;
14569}
14570
24929352
DV		 14571static void intel_sanitize_crtc(struct intel_crtc *crtc)
14572{
14573 struct drm_device *dev = crtc->base.dev;
14574 struct drm_i915_private *dev_priv = dev->dev_private;
fa555837 14575 u32 reg;
24929352 14576
24929352 14577 /* Clear any frame start delays used for debugging left by the BIOS */
6e3c9717 14578 reg = PIPECONF(crtc->config->cpu_transcoder);
24929352
DV		 14579 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
14580
d3eaf884 14581 /* restore vblank interrupts to correct state */
9625604c 14582 drm_crtc_vblank_reset(&crtc->base);
d297e103
VS		 14583 if (crtc->active) {
14584 update_scanline_offset(crtc);
9625604c
DV		 14585 drm_crtc_vblank_on(&crtc->base);
14586 }
d3eaf884 14587
24929352 14588 /* We need to sanitize the plane -> pipe mapping first because this will
fa555837
DV		 14589 * disable the crtc (and hence change the state) if it is wrong. Note
14590 * that gen4+ has a fixed plane -> pipe mapping. */
14591 if (INTEL_INFO(dev)->gen < 4 && !intel_check_plane_mapping(crtc)) {
24929352
DV		 14592 struct intel_connector *connector;
14593 bool plane;
14594
24929352
DV		 14595 DRM_DEBUG_KMS("[CRTC:%d] wrong plane connection detected!\n",
14596 crtc->base.base.id);
14597
14598 /* Pipe has the wrong plane attached and the plane is active.
14599 * Temporarily change the plane mapping and disable everything
14600 * ... */
14601 plane = crtc->plane;
b70709a6 14602 to_intel_plane_state(crtc->base.primary->state)->visible = true;
24929352 14603 crtc->plane = !plane;
ce22dba9 14604 intel_crtc_disable_planes(&crtc->base);
24929352
DV		 14605 dev_priv->display.crtc_disable(&crtc->base);
14606 crtc->plane = plane;
14607
14608 /* ... and break all links. */
3a3371ff 14609 for_each_intel_connector(dev, connector) {
24929352
DV		 14610 if (connector->encoder->base.crtc != &crtc->base)
14611 continue;
14612
7f1950fb
EE		 14613 connector->base.dpms = DRM_MODE_DPMS_OFF;
14614 connector->base.encoder = NULL;
24929352 14615 }
7f1950fb
EE		 14616 /* multiple connectors may have the same encoder:
14617 * handle them and break crtc link separately */
3a3371ff 14618 for_each_intel_connector(dev, connector)
7f1950fb
EE		 14619 if (connector->encoder->base.crtc == &crtc->base) {
14620 connector->encoder->base.crtc = NULL;
14621 connector->encoder->connectors_active = false;
14622 }
24929352
DV		 14623
14624 WARN_ON(crtc->active);
83d65738 14625 crtc->base.state->enable = false;
24929352
DV		 14626 crtc->base.enabled = false;
14627 }
24929352 14628
7fad798e
DV		 14629 if (dev_priv->quirks & QUIRK_PIPEA_FORCE &&
14630 crtc->pipe == PIPE_A && !crtc->active) {
14631 /* BIOS forgot to enable pipe A, this mostly happens after
14632 * resume. Force-enable the pipe to fix this, the update_dpms
14633 * call below we restore the pipe to the right state, but leave
14634 * the required bits on. */
14635 intel_enable_pipe_a(dev);
14636 }
14637
24929352
DV		 14638 /* Adjust the state of the output pipe according to whether we
14639 * have active connectors/encoders. */
14640 intel_crtc_update_dpms(&crtc->base);
14641
83d65738 14642 if (crtc->active != crtc->base.state->enable) {
24929352
DV		 14643 struct intel_encoder *encoder;
14644
14645 /* This can happen either due to bugs in the get_hw_state
14646 * functions or because the pipe is force-enabled due to the
14647 * pipe A quirk. */
14648 DRM_DEBUG_KMS("[CRTC:%d] hw state adjusted, was %s, now %s\n",
14649 crtc->base.base.id,
83d65738 14650 crtc->base.state->enable ? "enabled" : "disabled",
24929352
DV		 14651 crtc->active ? "enabled" : "disabled");
14652
83d65738 14653 crtc->base.state->enable = crtc->active;
24929352
DV		 14654 crtc->base.enabled = crtc->active;
14655
14656 /* Because we only establish the connector -> encoder ->
14657 * crtc links if something is active, this means the
14658 * crtc is now deactivated. Break the links. connector
14659 * -> encoder links are only establish when things are
14660 * actually up, hence no need to break them. */
14661 WARN_ON(crtc->active);
14662
14663 for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
14664 WARN_ON(encoder->connectors_active);
14665 encoder->base.crtc = NULL;
14666 }
14667 }
c5ab3bc0 14668
a3ed6aad 14669 if (crtc->active || HAS_GMCH_DISPLAY(dev)) {
4cc31489
DV		 14670 /*
14671 * We start out with underrun reporting disabled to avoid races.
14672 * For correct bookkeeping mark this on active crtcs.
14673 *
c5ab3bc0
DV		 14674 * Also on gmch platforms we dont have any hardware bits to
14675 * disable the underrun reporting. Which means we need to start
14676 * out with underrun reporting disabled also on inactive pipes,
14677 * since otherwise we'll complain about the garbage we read when
14678 * e.g. coming up after runtime pm.
14679 *
4cc31489
DV		 14680 * No protection against concurrent access is required - at
14681 * worst a fifo underrun happens which also sets this to false.
14682 */
14683 crtc->cpu_fifo_underrun_disabled = true;
14684 crtc->pch_fifo_underrun_disabled = true;
14685 }
24929352
DV		 14686}
14687
14688static void intel_sanitize_encoder(struct intel_encoder *encoder)
14689{
14690 struct intel_connector *connector;
14691 struct drm_device *dev = encoder->base.dev;
14692
14693 /* We need to check both for a crtc link (meaning that the
14694 * encoder is active and trying to read from a pipe) and the
14695 * pipe itself being active. */
14696 bool has_active_crtc = encoder->base.crtc &&
14697 to_intel_crtc(encoder->base.crtc)->active;
14698
14699 if (encoder->connectors_active && !has_active_crtc) {
14700 DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
14701 encoder->base.base.id,
8e329a03 14702 encoder->base.name);
24929352
DV		 14703
14704 /* Connector is active, but has no active pipe. This is
14705 * fallout from our resume register restoring. Disable
14706 * the encoder manually again. */
14707 if (encoder->base.crtc) {
14708 DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
14709 encoder->base.base.id,
8e329a03 14710 encoder->base.name);
24929352 14711 encoder->disable(encoder);
a62d1497
VS		 14712 if (encoder->post_disable)
14713 encoder->post_disable(encoder);
24929352 14714 }
7f1950fb
EE		 14715 encoder->base.crtc = NULL;
14716 encoder->connectors_active = false;
24929352
DV		 14717
14718 /* Inconsistent output/port/pipe state happens presumably due to
14719 * a bug in one of the get_hw_state functions. Or someplace else
14720 * in our code, like the register restore mess on resume. Clamp
14721 * things to off as a safer default. */
3a3371ff 14722 for_each_intel_connector(dev, connector) {
24929352
DV		 14723 if (connector->encoder != encoder)
14724 continue;
7f1950fb
EE		 14725 connector->base.dpms = DRM_MODE_DPMS_OFF;
14726 connector->base.encoder = NULL;
24929352
DV		 14727 }
14728 }
14729 /* Enabled encoders without active connectors will be fixed in
14730 * the crtc fixup. */
14731}
14732
04098753 14733void i915_redisable_vga_power_on(struct drm_device *dev)
0fde901f
KM		 14734{
14735 struct drm_i915_private *dev_priv = dev->dev_private;
766aa1c4 14736 u32 vga_reg = i915_vgacntrl_reg(dev);
0fde901f 14737
04098753
ID		 14738 if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
14739 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
14740 i915_disable_vga(dev);
14741 }
14742}
14743
14744void i915_redisable_vga(struct drm_device *dev)
14745{
14746 struct drm_i915_private *dev_priv = dev->dev_private;
14747
8dc8a27c
PZ		 14748 /* This function can be called both from intel_modeset_setup_hw_state or
14749 * at a very early point in our resume sequence, where the power well
14750 * structures are not yet restored. Since this function is at a very
14751 * paranoid "someone might have enabled VGA while we were not looking"
14752 * level, just check if the power well is enabled instead of trying to
14753 * follow the "don't touch the power well if we don't need it" policy
14754 * the rest of the driver uses. */
f458ebbc 14755 if (!intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_VGA))
8dc8a27c
PZ		 14756 return;
14757
04098753 14758 i915_redisable_vga_power_on(dev);
0fde901f
KM		 14759}
14760
98ec7739
VS		 14761static bool primary_get_hw_state(struct intel_crtc *crtc)
14762{
14763 struct drm_i915_private *dev_priv = crtc->base.dev->dev_private;
14764
14765 if (!crtc->active)
14766 return false;
14767
14768 return I915_READ(DSPCNTR(crtc->plane)) & DISPLAY_PLANE_ENABLE;
14769}
14770
30e984df 14771static void intel_modeset_readout_hw_state(struct drm_device *dev)
24929352
DV		 14772{
14773 struct drm_i915_private *dev_priv = dev->dev_private;
14774 enum pipe pipe;
24929352
DV		 14775 struct intel_crtc *crtc;
14776 struct intel_encoder *encoder;
14777 struct intel_connector *connector;
5358901f 14778 int i;
24929352 14779
d3fcc808 14780 for_each_intel_crtc(dev, crtc) {
b70709a6
ML		 14781 struct drm_plane *primary = crtc->base.primary;
14782 struct intel_plane_state *plane_state;
14783
6e3c9717 14784 memset(crtc->config, 0, sizeof(*crtc->config));
3b117c8f 14785
6e3c9717 14786 crtc->config->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
9953599b 14787
0e8ffe1b 14788 crtc->active = dev_priv->display.get_pipe_config(crtc,
6e3c9717 14789 crtc->config);
24929352 14790
83d65738 14791 crtc->base.state->enable = crtc->active;
24929352 14792 crtc->base.enabled = crtc->active;
b70709a6
ML		 14793
14794 plane_state = to_intel_plane_state(primary->state);
14795 plane_state->visible = primary_get_hw_state(crtc);
24929352
DV		 14796
14797 DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
14798 crtc->base.base.id,
14799 crtc->active ? "enabled" : "disabled");
14800 }
14801
5358901f
DV		 14802 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
14803 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
14804
3e369b76
ACO		 14805 pll->on = pll->get_hw_state(dev_priv, pll,
14806 &pll->config.hw_state);
5358901f 14807 pll->active = 0;
3e369b76 14808 pll->config.crtc_mask = 0;
d3fcc808 14809 for_each_intel_crtc(dev, crtc) {
1e6f2ddc 14810 if (crtc->active && intel_crtc_to_shared_dpll(crtc) == pll) {
5358901f 14811 pll->active++;
3e369b76 14812 pll->config.crtc_mask |= 1 << crtc->pipe;
1e6f2ddc 14813 }
5358901f 14814 }
5358901f 14815
1e6f2ddc 14816 DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
3e369b76 14817 pll->name, pll->config.crtc_mask, pll->on);
bd2bb1b9 14818
3e369b76 14819 if (pll->config.crtc_mask)
bd2bb1b9 14820 intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS);
5358901f
DV		 14821 }
14822
b2784e15 14823 for_each_intel_encoder(dev, encoder) {
24929352
DV		 14824 pipe = 0;
14825
14826 if (encoder->get_hw_state(encoder, &pipe)) {
045ac3b5
JB		 14827 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
14828 encoder->base.crtc = &crtc->base;
6e3c9717 14829 encoder->get_config(encoder, crtc->config);
24929352
DV		 14830 } else {
14831 encoder->base.crtc = NULL;
14832 }
14833
14834 encoder->connectors_active = false;
6f2bcceb 14835 DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
24929352 14836 encoder->base.base.id,
8e329a03 14837 encoder->base.name,
24929352 14838 encoder->base.crtc ? "enabled" : "disabled",
6f2bcceb 14839 pipe_name(pipe));
24929352
DV		 14840 }
14841
3a3371ff 14842 for_each_intel_connector(dev, connector) {
24929352
DV		 14843 if (connector->get_hw_state(connector)) {
14844 connector->base.dpms = DRM_MODE_DPMS_ON;
14845 connector->encoder->connectors_active = true;
14846 connector->base.encoder = &connector->encoder->base;
14847 } else {
14848 connector->base.dpms = DRM_MODE_DPMS_OFF;
14849 connector->base.encoder = NULL;
14850 }
14851 DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
14852 connector->base.base.id,
c23cc417 14853 connector->base.name,
24929352
DV		 14854 connector->base.encoder ? "enabled" : "disabled");
14855 }
30e984df
DV		 14856}
14857
14858/* Scan out the current hw modeset state, sanitizes it and maps it into the drm
14859 * and i915 state tracking structures. */
14860void intel_modeset_setup_hw_state(struct drm_device *dev,
14861 bool force_restore)
14862{
14863 struct drm_i915_private *dev_priv = dev->dev_private;
14864 enum pipe pipe;
30e984df
DV		 14865 struct intel_crtc *crtc;
14866 struct intel_encoder *encoder;
35c95375 14867 int i;
30e984df
DV		 14868
14869 intel_modeset_readout_hw_state(dev);
24929352 14870
babea61d
JB		 14871 /*
14872 * Now that we have the config, copy it to each CRTC struct
14873 * Note that this could go away if we move to using crtc_config
14874 * checking everywhere.
14875 */
d3fcc808 14876 for_each_intel_crtc(dev, crtc) {
d330a953 14877 if (crtc->active && i915.fastboot) {
6e3c9717
ACO		 14878 intel_mode_from_pipe_config(&crtc->base.mode,
14879 crtc->config);
babea61d
JB		 14880 DRM_DEBUG_KMS("[CRTC:%d] found active mode: ",
14881 crtc->base.base.id);
14882 drm_mode_debug_printmodeline(&crtc->base.mode);
14883 }
14884 }
14885
24929352 14886 /* HW state is read out, now we need to sanitize this mess. */
b2784e15 14887 for_each_intel_encoder(dev, encoder) {
24929352
DV		 14888 intel_sanitize_encoder(encoder);
14889 }
14890
055e393f 14891 for_each_pipe(dev_priv, pipe) {
24929352
DV		 14892 crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
14893 intel_sanitize_crtc(crtc);
6e3c9717
ACO		 14894 intel_dump_pipe_config(crtc, crtc->config,
14895 "[setup_hw_state]");
24929352 14896 }
9a935856 14897
d29b2f9d
ACO		 14898 intel_modeset_update_connector_atomic_state(dev);
14899
35c95375
DV		 14900 for (i = 0; i < dev_priv->num_shared_dpll; i++) {
14901 struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
14902
14903 if (!pll->on || pll->active)
14904 continue;
14905
14906 DRM_DEBUG_KMS("%s enabled but not in use, disabling\n", pll->name);
14907
14908 pll->disable(dev_priv, pll);
14909 pll->on = false;
14910 }
14911
3078999f
PB		 14912 if (IS_GEN9(dev))
14913 skl_wm_get_hw_state(dev);
14914 else if (HAS_PCH_SPLIT(dev))
243e6a44
VS		 14915 ilk_wm_get_hw_state(dev);
14916
45e2b5f6 14917 if (force_restore) {
7d0bc1ea
VS		 14918 i915_redisable_vga(dev);
14919
f30da187
DV		 14920 /*
14921 * We need to use raw interfaces for restoring state to avoid
14922 * checking (bogus) intermediate states.
14923 */
055e393f 14924 for_each_pipe(dev_priv, pipe) {
b5644d05
JB		 14925 struct drm_crtc *crtc =
14926 dev_priv->pipe_to_crtc_mapping[pipe];
f30da187 14927
83a57153 14928 intel_crtc_restore_mode(crtc);
45e2b5f6
DV		 14929 }
14930 } else {
14931 intel_modeset_update_staged_output_state(dev);
14932 }
8af6cf88
DV		 14933
14934 intel_modeset_check_state(dev);
2c7111db
CW		 14935}
14936
14937void intel_modeset_gem_init(struct drm_device *dev)
14938{
92122789 14939 struct drm_i915_private *dev_priv = dev->dev_private;
484b41dd 14940 struct drm_crtc *c;
2ff8fde1 14941 struct drm_i915_gem_object *obj;
e0d6149b 14942 int ret;
484b41dd 14943
ae48434c
ID		 14944 mutex_lock(&dev->struct_mutex);
14945 intel_init_gt_powersave(dev);
14946 mutex_unlock(&dev->struct_mutex);
14947
92122789
JB		 14948 /*
14949 * There may be no VBT; and if the BIOS enabled SSC we can
14950 * just keep using it to avoid unnecessary flicker. Whereas if the
14951 * BIOS isn't using it, don't assume it will work even if the VBT
14952 * indicates as much.
14953 */
14954 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
14955 dev_priv->vbt.lvds_use_ssc = !!(I915_READ(PCH_DREF_CONTROL) &
14956 DREF_SSC1_ENABLE);
14957
1833b134 14958 intel_modeset_init_hw(dev);
02e792fb
DV		 14959
14960 intel_setup_overlay(dev);
484b41dd
JB		 14961
14962 /*
14963 * Make sure any fbs we allocated at startup are properly
14964 * pinned & fenced. When we do the allocation it's too early
14965 * for this.
14966 */
70e1e0ec 14967 for_each_crtc(dev, c) {
2ff8fde1
MR		 14968 obj = intel_fb_obj(c->primary->fb);
14969 if (obj == NULL)
484b41dd
JB		 14970 continue;
14971
e0d6149b
TU		 14972 mutex_lock(&dev->struct_mutex);
14973 ret = intel_pin_and_fence_fb_obj(c->primary,
14974 c->primary->fb,
14975 c->primary->state,
14976 NULL);
14977 mutex_unlock(&dev->struct_mutex);
14978 if (ret) {
484b41dd
JB		 14979 DRM_ERROR("failed to pin boot fb on pipe %d\n",
14980 to_intel_crtc(c)->pipe);
66e514c1
DA		 14981 drm_framebuffer_unreference(c->primary->fb);
14982 c->primary->fb = NULL;
afd65eb4 14983 update_state_fb(c->primary);
484b41dd
JB		 14984 }
14985 }
0962c3c9
VS		 14986
14987 intel_backlight_register(dev);
79e53945
JB		 14988}
14989
4932e2c3
ID		 14990void intel_connector_unregister(struct intel_connector *intel_connector)
14991{
14992 struct drm_connector *connector = &intel_connector->base;
14993
14994 intel_panel_destroy_backlight(connector);
34ea3d38 14995 drm_connector_unregister(connector);
4932e2c3
ID		 14996}
14997
79e53945
JB		 14998void intel_modeset_cleanup(struct drm_device *dev)
14999{
652c393a 15000 struct drm_i915_private *dev_priv = dev->dev_private;
d9255d57 15001 struct drm_connector *connector;
652c393a 15002
2eb5252e
ID		 15003 intel_disable_gt_powersave(dev);
15004
0962c3c9
VS		 15005 intel_backlight_unregister(dev);
15006
fd0c0642
DV		 15007 /*
15008 * Interrupts and polling as the first thing to avoid creating havoc.
2eb5252e 15009 * Too much stuff here (turning of connectors, ...) would
fd0c0642
DV		 15010 * experience fancy races otherwise.
15011 */
2aeb7d3a 15012 intel_irq_uninstall(dev_priv);
eb21b92b 15013
fd0c0642
DV		 15014 /*
15015 * Due to the hpd irq storm handling the hotplug work can re-arm the
15016 * poll handlers. Hence disable polling after hpd handling is shut down.
15017 */
f87ea761 15018 drm_kms_helper_poll_fini(dev);
fd0c0642 15019
652c393a
JB		 15020 mutex_lock(&dev->struct_mutex);
15021
723bfd70
JB		 15022 intel_unregister_dsm_handler();
15023
7ff0ebcc 15024 intel_fbc_disable(dev);
e70236a8 15025
69341a5e
KH		 15026 mutex_unlock(&dev->struct_mutex);
15027
1630fe75
CW		 15028 /* flush any delayed tasks or pending work */
15029 flush_scheduled_work();
15030
db31af1d
JN		 15031 /* destroy the backlight and sysfs files before encoders/connectors */
15032 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4932e2c3
ID		 15033 struct intel_connector *intel_connector;
15034
15035 intel_connector = to_intel_connector(connector);
15036 intel_connector->unregister(intel_connector);
db31af1d 15037 }
d9255d57 15038
79e53945 15039 drm_mode_config_cleanup(dev);
4d7bb011
DV		 15040
15041 intel_cleanup_overlay(dev);
ae48434c
ID		 15042
15043 mutex_lock(&dev->struct_mutex);
15044 intel_cleanup_gt_powersave(dev);
15045 mutex_unlock(&dev->struct_mutex);
79e53945
JB		 15046}
15047
f1c79df3
ZW		 15048/*
15049 * Return which encoder is currently attached for connector.
15050 */
df0e9248 15051struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
79e53945 15052{
df0e9248
CW		 15053 return &intel_attached_encoder(connector)->base;
15054}
f1c79df3 15055
df0e9248
CW		 15056void intel_connector_attach_encoder(struct intel_connector *connector,
15057 struct intel_encoder *encoder)
15058{
15059 connector->encoder = encoder;
15060 drm_mode_connector_attach_encoder(&connector->base,
15061 &encoder->base);
79e53945 15062}
28d52043
DA		 15063
15064/*
15065 * set vga decode state - true == enable VGA decode
15066 */
15067int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
15068{
15069 struct drm_i915_private *dev_priv = dev->dev_private;
a885b3cc 15070 unsigned reg = INTEL_INFO(dev)->gen >= 6 ? SNB_GMCH_CTRL : INTEL_GMCH_CTRL;
28d52043
DA		 15071 u16 gmch_ctrl;
15072
75fa041d
CW		 15073 if (pci_read_config_word(dev_priv->bridge_dev, reg, &gmch_ctrl)) {
15074 DRM_ERROR("failed to read control word\n");
15075 return -EIO;
15076 }
15077
c0cc8a55
CW		 15078 if (!!(gmch_ctrl & INTEL_GMCH_VGA_DISABLE) == !state)
15079 return 0;
15080
28d52043
DA		 15081 if (state)
15082 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
15083 else
15084 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
75fa041d
CW		 15085
15086 if (pci_write_config_word(dev_priv->bridge_dev, reg, gmch_ctrl)) {
15087 DRM_ERROR("failed to write control word\n");
15088 return -EIO;
15089 }
15090
28d52043
DA		 15091 return 0;
15092}
c4a1d9e4 15093
c4a1d9e4 15094struct intel_display_error_state {
ff57f1b0
PZ		 15095
15096 u32 power_well_driver;
15097
63b66e5b
CW		 15098 int num_transcoders;
15099
c4a1d9e4
CW		 15100 struct intel_cursor_error_state {
15101 u32 control;
15102 u32 position;
15103 u32 base;
15104 u32 size;
52331309 15105 } cursor[I915_MAX_PIPES];
c4a1d9e4
CW		 15106
15107 struct intel_pipe_error_state {
ddf9c536 15108 bool power_domain_on;
c4a1d9e4 15109 u32 source;
f301b1e1 15110 u32 stat;
52331309 15111 } pipe[I915_MAX_PIPES];
c4a1d9e4
CW		 15112
15113 struct intel_plane_error_state {
15114 u32 control;
15115 u32 stride;
15116 u32 size;
15117 u32 pos;
15118 u32 addr;
15119 u32 surface;
15120 u32 tile_offset;
52331309 15121 } plane[I915_MAX_PIPES];
63b66e5b
CW		 15122
15123 struct intel_transcoder_error_state {
ddf9c536 15124 bool power_domain_on;
63b66e5b
CW		 15125 enum transcoder cpu_transcoder;
15126
15127 u32 conf;
15128
15129 u32 htotal;
15130 u32 hblank;
15131 u32 hsync;
15132 u32 vtotal;
15133 u32 vblank;
15134 u32 vsync;
15135 } transcoder[4];
c4a1d9e4
CW		 15136};
15137
15138struct intel_display_error_state *
15139intel_display_capture_error_state(struct drm_device *dev)
15140{
fbee40df 15141 struct drm_i915_private *dev_priv = dev->dev_private;
c4a1d9e4 15142 struct intel_display_error_state *error;
63b66e5b
CW		 15143 int transcoders[] = {
15144 TRANSCODER_A,
15145 TRANSCODER_B,
15146 TRANSCODER_C,
15147 TRANSCODER_EDP,
15148 };
c4a1d9e4
CW		 15149 int i;
15150
63b66e5b
CW		 15151 if (INTEL_INFO(dev)->num_pipes == 0)
15152 return NULL;
15153
9d1cb914 15154 error = kzalloc(sizeof(*error), GFP_ATOMIC);
c4a1d9e4
CW		 15155 if (error == NULL)
15156 return NULL;
15157
190be112 15158 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
ff57f1b0
PZ		 15159 error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
15160
055e393f 15161 for_each_pipe(dev_priv, i) {
ddf9c536 15162 error->pipe[i].power_domain_on =
f458ebbc
DV		 15163 __intel_display_power_is_enabled(dev_priv,
15164 POWER_DOMAIN_PIPE(i));
ddf9c536 15165 if (!error->pipe[i].power_domain_on)
9d1cb914
PZ		 15166 continue;
15167
5efb3e28
VS		 15168 error->cursor[i].control = I915_READ(CURCNTR(i));
15169 error->cursor[i].position = I915_READ(CURPOS(i));
15170 error->cursor[i].base = I915_READ(CURBASE(i));
c4a1d9e4
CW		 15171
15172 error->plane[i].control = I915_READ(DSPCNTR(i));
15173 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
80ca378b 15174 if (INTEL_INFO(dev)->gen <= 3) {
51889b35 15175 error->plane[i].size = I915_READ(DSPSIZE(i));
80ca378b
PZ		 15176 error->plane[i].pos = I915_READ(DSPPOS(i));
15177 }
ca291363
PZ		 15178 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
15179 error->plane[i].addr = I915_READ(DSPADDR(i));
c4a1d9e4
CW		 15180 if (INTEL_INFO(dev)->gen >= 4) {
15181 error->plane[i].surface = I915_READ(DSPSURF(i));
15182 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
15183 }
15184
c4a1d9e4 15185 error->pipe[i].source = I915_READ(PIPESRC(i));
f301b1e1 15186
3abfce77 15187 if (HAS_GMCH_DISPLAY(dev))
f301b1e1 15188 error->pipe[i].stat = I915_READ(PIPESTAT(i));
63b66e5b
CW		 15189 }
15190
15191 error->num_transcoders = INTEL_INFO(dev)->num_pipes;
15192 if (HAS_DDI(dev_priv->dev))
15193 error->num_transcoders++; /* Account for eDP. */
15194
15195 for (i = 0; i < error->num_transcoders; i++) {
15196 enum transcoder cpu_transcoder = transcoders[i];
15197
ddf9c536 15198 error->transcoder[i].power_domain_on =
f458ebbc 15199 __intel_display_power_is_enabled(dev_priv,
38cc1daf 15200 POWER_DOMAIN_TRANSCODER(cpu_transcoder));
ddf9c536 15201 if (!error->transcoder[i].power_domain_on)
9d1cb914
PZ		 15202 continue;
15203
63b66e5b
CW		 15204 error->transcoder[i].cpu_transcoder = cpu_transcoder;
15205
15206 error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
15207 error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
15208 error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
15209 error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
15210 error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
15211 error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
15212 error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
c4a1d9e4
CW		 15213 }
15214
15215 return error;
15216}
15217
edc3d884
MK		 15218#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
15219
c4a1d9e4 15220void
edc3d884 15221intel_display_print_error_state(struct drm_i915_error_state_buf *m,
c4a1d9e4
CW		 15222 struct drm_device *dev,
15223 struct intel_display_error_state *error)
15224{
055e393f 15225 struct drm_i915_private *dev_priv = dev->dev_private;
c4a1d9e4
CW		 15226 int i;
15227
63b66e5b
CW		 15228 if (!error)
15229 return;
15230
edc3d884 15231 err_printf(m, "Num Pipes: %d\n", INTEL_INFO(dev)->num_pipes);
190be112 15232 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
edc3d884 15233 err_printf(m, "PWR_WELL_CTL2: %08x\n",
ff57f1b0 15234 error->power_well_driver);
055e393f 15235 for_each_pipe(dev_priv, i) {
edc3d884 15236 err_printf(m, "Pipe [%d]:\n", i);
ddf9c536
ID		 15237 err_printf(m, " Power: %s\n",
15238 error->pipe[i].power_domain_on ? "on" : "off");
edc3d884 15239 err_printf(m, " SRC: %08x\n", error->pipe[i].source);
f301b1e1 15240 err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
edc3d884
MK		 15241
15242 err_printf(m, "Plane [%d]:\n", i);
15243 err_printf(m, " CNTR: %08x\n", error->plane[i].control);
15244 err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
80ca378b 15245 if (INTEL_INFO(dev)->gen <= 3) {
edc3d884
MK		 15246 err_printf(m, " SIZE: %08x\n", error->plane[i].size);
15247 err_printf(m, " POS: %08x\n", error->plane[i].pos);
80ca378b 15248 }
4b71a570 15249 if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
edc3d884 15250 err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
c4a1d9e4 15251 if (INTEL_INFO(dev)->gen >= 4) {
edc3d884
MK		 15252 err_printf(m, " SURF: %08x\n", error->plane[i].surface);
15253 err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
c4a1d9e4
CW		 15254 }
15255
edc3d884
MK		 15256 err_printf(m, "Cursor [%d]:\n", i);
15257 err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
15258 err_printf(m, " POS: %08x\n", error->cursor[i].position);
15259 err_printf(m, " BASE: %08x\n", error->cursor[i].base);
c4a1d9e4 15260 }
63b66e5b
CW		 15261
15262 for (i = 0; i < error->num_transcoders; i++) {
1cf84bb6 15263 err_printf(m, "CPU transcoder: %c\n",
63b66e5b 15264 transcoder_name(error->transcoder[i].cpu_transcoder));
ddf9c536
ID		 15265 err_printf(m, " Power: %s\n",
15266 error->transcoder[i].power_domain_on ? "on" : "off");
63b66e5b
CW		 15267 err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
15268 err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
15269 err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
15270 err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
15271 err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
15272 err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
15273 err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
15274 }
c4a1d9e4 15275}
e2fcdaa9
VS		 15276
15277void intel_modeset_preclose(struct drm_device *dev, struct drm_file *file)
15278{
15279 struct intel_crtc *crtc;
15280
15281 for_each_intel_crtc(dev, crtc) {
15282 struct intel_unpin_work *work;
e2fcdaa9 15283
5e2d7afc 15284 spin_lock_irq(&dev->event_lock);
e2fcdaa9
VS		 15285
15286 work = crtc->unpin_work;
15287
15288 if (work && work->event &&
15289 work->event->base.file_priv == file) {
15290 kfree(work->event);
15291 work->event = NULL;
15292 }
15293
5e2d7afc 15294 spin_unlock_irq(&dev->event_lock);
e2fcdaa9
VS		 15295 }
15296}
Linux kernel - Deliverables
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