2 * Copyright © 2006-2007 Intel Corporation
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:
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
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.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/module.h>
28 #include <linux/input.h>
29 #include <linux/i2c.h>
30 #include <linux/kernel.h>
32 #include "intel_drv.h"
37 #include "drm_crtc_helper.h"
39 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
41 bool intel_pipe_has_type (struct drm_crtc
*crtc
, int type
);
42 static void intel_update_watermarks(struct drm_device
*dev
);
43 static void intel_increase_pllclock(struct drm_crtc
*crtc
, bool schedule
);
66 #define INTEL_P2_NUM 2
67 typedef struct intel_limit intel_limit_t
;
69 intel_range_t dot
, vco
, n
, m
, m1
, m2
, p
, p1
;
71 bool (* find_pll
)(const intel_limit_t
*, struct drm_crtc
*,
72 int, int, intel_clock_t
*);
73 bool (* find_reduced_pll
)(const intel_limit_t
*, struct drm_crtc
*,
74 int, int, intel_clock_t
*);
77 #define I8XX_DOT_MIN 25000
78 #define I8XX_DOT_MAX 350000
79 #define I8XX_VCO_MIN 930000
80 #define I8XX_VCO_MAX 1400000
84 #define I8XX_M_MAX 140
85 #define I8XX_M1_MIN 18
86 #define I8XX_M1_MAX 26
88 #define I8XX_M2_MAX 16
90 #define I8XX_P_MAX 128
92 #define I8XX_P1_MAX 33
93 #define I8XX_P1_LVDS_MIN 1
94 #define I8XX_P1_LVDS_MAX 6
95 #define I8XX_P2_SLOW 4
96 #define I8XX_P2_FAST 2
97 #define I8XX_P2_LVDS_SLOW 14
98 #define I8XX_P2_LVDS_FAST 7
99 #define I8XX_P2_SLOW_LIMIT 165000
101 #define I9XX_DOT_MIN 20000
102 #define I9XX_DOT_MAX 400000
103 #define I9XX_VCO_MIN 1400000
104 #define I9XX_VCO_MAX 2800000
105 #define IGD_VCO_MIN 1700000
106 #define IGD_VCO_MAX 3500000
109 /* IGD's Ncounter is a ring counter */
112 #define I9XX_M_MIN 70
113 #define I9XX_M_MAX 120
115 #define IGD_M_MAX 256
116 #define I9XX_M1_MIN 10
117 #define I9XX_M1_MAX 22
118 #define I9XX_M2_MIN 5
119 #define I9XX_M2_MAX 9
120 /* IGD M1 is reserved, and must be 0 */
124 #define IGD_M2_MAX 254
125 #define I9XX_P_SDVO_DAC_MIN 5
126 #define I9XX_P_SDVO_DAC_MAX 80
127 #define I9XX_P_LVDS_MIN 7
128 #define I9XX_P_LVDS_MAX 98
129 #define IGD_P_LVDS_MIN 7
130 #define IGD_P_LVDS_MAX 112
131 #define I9XX_P1_MIN 1
132 #define I9XX_P1_MAX 8
133 #define I9XX_P2_SDVO_DAC_SLOW 10
134 #define I9XX_P2_SDVO_DAC_FAST 5
135 #define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
136 #define I9XX_P2_LVDS_SLOW 14
137 #define I9XX_P2_LVDS_FAST 7
138 #define I9XX_P2_LVDS_SLOW_LIMIT 112000
140 /*The parameter is for SDVO on G4x platform*/
141 #define G4X_DOT_SDVO_MIN 25000
142 #define G4X_DOT_SDVO_MAX 270000
143 #define G4X_VCO_MIN 1750000
144 #define G4X_VCO_MAX 3500000
145 #define G4X_N_SDVO_MIN 1
146 #define G4X_N_SDVO_MAX 4
147 #define G4X_M_SDVO_MIN 104
148 #define G4X_M_SDVO_MAX 138
149 #define G4X_M1_SDVO_MIN 17
150 #define G4X_M1_SDVO_MAX 23
151 #define G4X_M2_SDVO_MIN 5
152 #define G4X_M2_SDVO_MAX 11
153 #define G4X_P_SDVO_MIN 10
154 #define G4X_P_SDVO_MAX 30
155 #define G4X_P1_SDVO_MIN 1
156 #define G4X_P1_SDVO_MAX 3
157 #define G4X_P2_SDVO_SLOW 10
158 #define G4X_P2_SDVO_FAST 10
159 #define G4X_P2_SDVO_LIMIT 270000
161 /*The parameter is for HDMI_DAC on G4x platform*/
162 #define G4X_DOT_HDMI_DAC_MIN 22000
163 #define G4X_DOT_HDMI_DAC_MAX 400000
164 #define G4X_N_HDMI_DAC_MIN 1
165 #define G4X_N_HDMI_DAC_MAX 4
166 #define G4X_M_HDMI_DAC_MIN 104
167 #define G4X_M_HDMI_DAC_MAX 138
168 #define G4X_M1_HDMI_DAC_MIN 16
169 #define G4X_M1_HDMI_DAC_MAX 23
170 #define G4X_M2_HDMI_DAC_MIN 5
171 #define G4X_M2_HDMI_DAC_MAX 11
172 #define G4X_P_HDMI_DAC_MIN 5
173 #define G4X_P_HDMI_DAC_MAX 80
174 #define G4X_P1_HDMI_DAC_MIN 1
175 #define G4X_P1_HDMI_DAC_MAX 8
176 #define G4X_P2_HDMI_DAC_SLOW 10
177 #define G4X_P2_HDMI_DAC_FAST 5
178 #define G4X_P2_HDMI_DAC_LIMIT 165000
180 /*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
181 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
182 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
183 #define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
184 #define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
185 #define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
186 #define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
187 #define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
188 #define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
189 #define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
190 #define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
191 #define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
192 #define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
193 #define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
194 #define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
195 #define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
196 #define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
197 #define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
199 /*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
200 #define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
201 #define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
202 #define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
203 #define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
204 #define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
205 #define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
206 #define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
207 #define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
208 #define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
209 #define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
210 #define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
211 #define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
212 #define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
213 #define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
214 #define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
215 #define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
216 #define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
218 /*The parameter is for DISPLAY PORT on G4x platform*/
219 #define G4X_DOT_DISPLAY_PORT_MIN 161670
220 #define G4X_DOT_DISPLAY_PORT_MAX 227000
221 #define G4X_N_DISPLAY_PORT_MIN 1
222 #define G4X_N_DISPLAY_PORT_MAX 2
223 #define G4X_M_DISPLAY_PORT_MIN 97
224 #define G4X_M_DISPLAY_PORT_MAX 108
225 #define G4X_M1_DISPLAY_PORT_MIN 0x10
226 #define G4X_M1_DISPLAY_PORT_MAX 0x12
227 #define G4X_M2_DISPLAY_PORT_MIN 0x05
228 #define G4X_M2_DISPLAY_PORT_MAX 0x06
229 #define G4X_P_DISPLAY_PORT_MIN 10
230 #define G4X_P_DISPLAY_PORT_MAX 20
231 #define G4X_P1_DISPLAY_PORT_MIN 1
232 #define G4X_P1_DISPLAY_PORT_MAX 2
233 #define G4X_P2_DISPLAY_PORT_SLOW 10
234 #define G4X_P2_DISPLAY_PORT_FAST 10
235 #define G4X_P2_DISPLAY_PORT_LIMIT 0
238 /* as we calculate clock using (register_value + 2) for
239 N/M1/M2, so here the range value for them is (actual_value-2).
241 #define IGDNG_DOT_MIN 25000
242 #define IGDNG_DOT_MAX 350000
243 #define IGDNG_VCO_MIN 1760000
244 #define IGDNG_VCO_MAX 3510000
245 #define IGDNG_N_MIN 1
246 #define IGDNG_N_MAX 5
247 #define IGDNG_M_MIN 79
248 #define IGDNG_M_MAX 118
249 #define IGDNG_M1_MIN 12
250 #define IGDNG_M1_MAX 23
251 #define IGDNG_M2_MIN 5
252 #define IGDNG_M2_MAX 9
253 #define IGDNG_P_SDVO_DAC_MIN 5
254 #define IGDNG_P_SDVO_DAC_MAX 80
255 #define IGDNG_P_LVDS_MIN 28
256 #define IGDNG_P_LVDS_MAX 112
257 #define IGDNG_P1_MIN 1
258 #define IGDNG_P1_MAX 8
259 #define IGDNG_P2_SDVO_DAC_SLOW 10
260 #define IGDNG_P2_SDVO_DAC_FAST 5
261 #define IGDNG_P2_LVDS_SLOW 14 /* single channel */
262 #define IGDNG_P2_LVDS_FAST 7 /* double channel */
263 #define IGDNG_P2_DOT_LIMIT 225000 /* 225Mhz */
266 intel_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
267 int target
, int refclk
, intel_clock_t
*best_clock
);
269 intel_find_best_reduced_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
270 int target
, int refclk
, intel_clock_t
*best_clock
);
272 intel_g4x_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
273 int target
, int refclk
, intel_clock_t
*best_clock
);
275 intel_igdng_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
276 int target
, int refclk
, intel_clock_t
*best_clock
);
279 intel_find_pll_g4x_dp(const intel_limit_t
*, struct drm_crtc
*crtc
,
280 int target
, int refclk
, intel_clock_t
*best_clock
);
282 intel_find_pll_igdng_dp(const intel_limit_t
*, struct drm_crtc
*crtc
,
283 int target
, int refclk
, intel_clock_t
*best_clock
);
285 static const intel_limit_t intel_limits_i8xx_dvo
= {
286 .dot
= { .min
= I8XX_DOT_MIN
, .max
= I8XX_DOT_MAX
},
287 .vco
= { .min
= I8XX_VCO_MIN
, .max
= I8XX_VCO_MAX
},
288 .n
= { .min
= I8XX_N_MIN
, .max
= I8XX_N_MAX
},
289 .m
= { .min
= I8XX_M_MIN
, .max
= I8XX_M_MAX
},
290 .m1
= { .min
= I8XX_M1_MIN
, .max
= I8XX_M1_MAX
},
291 .m2
= { .min
= I8XX_M2_MIN
, .max
= I8XX_M2_MAX
},
292 .p
= { .min
= I8XX_P_MIN
, .max
= I8XX_P_MAX
},
293 .p1
= { .min
= I8XX_P1_MIN
, .max
= I8XX_P1_MAX
},
294 .p2
= { .dot_limit
= I8XX_P2_SLOW_LIMIT
,
295 .p2_slow
= I8XX_P2_SLOW
, .p2_fast
= I8XX_P2_FAST
},
296 .find_pll
= intel_find_best_PLL
,
297 .find_reduced_pll
= intel_find_best_reduced_PLL
,
300 static const intel_limit_t intel_limits_i8xx_lvds
= {
301 .dot
= { .min
= I8XX_DOT_MIN
, .max
= I8XX_DOT_MAX
},
302 .vco
= { .min
= I8XX_VCO_MIN
, .max
= I8XX_VCO_MAX
},
303 .n
= { .min
= I8XX_N_MIN
, .max
= I8XX_N_MAX
},
304 .m
= { .min
= I8XX_M_MIN
, .max
= I8XX_M_MAX
},
305 .m1
= { .min
= I8XX_M1_MIN
, .max
= I8XX_M1_MAX
},
306 .m2
= { .min
= I8XX_M2_MIN
, .max
= I8XX_M2_MAX
},
307 .p
= { .min
= I8XX_P_MIN
, .max
= I8XX_P_MAX
},
308 .p1
= { .min
= I8XX_P1_LVDS_MIN
, .max
= I8XX_P1_LVDS_MAX
},
309 .p2
= { .dot_limit
= I8XX_P2_SLOW_LIMIT
,
310 .p2_slow
= I8XX_P2_LVDS_SLOW
, .p2_fast
= I8XX_P2_LVDS_FAST
},
311 .find_pll
= intel_find_best_PLL
,
312 .find_reduced_pll
= intel_find_best_reduced_PLL
,
315 static const intel_limit_t intel_limits_i9xx_sdvo
= {
316 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
317 .vco
= { .min
= I9XX_VCO_MIN
, .max
= I9XX_VCO_MAX
},
318 .n
= { .min
= I9XX_N_MIN
, .max
= I9XX_N_MAX
},
319 .m
= { .min
= I9XX_M_MIN
, .max
= I9XX_M_MAX
},
320 .m1
= { .min
= I9XX_M1_MIN
, .max
= I9XX_M1_MAX
},
321 .m2
= { .min
= I9XX_M2_MIN
, .max
= I9XX_M2_MAX
},
322 .p
= { .min
= I9XX_P_SDVO_DAC_MIN
, .max
= I9XX_P_SDVO_DAC_MAX
},
323 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
324 .p2
= { .dot_limit
= I9XX_P2_SDVO_DAC_SLOW_LIMIT
,
325 .p2_slow
= I9XX_P2_SDVO_DAC_SLOW
, .p2_fast
= I9XX_P2_SDVO_DAC_FAST
},
326 .find_pll
= intel_find_best_PLL
,
327 .find_reduced_pll
= intel_find_best_reduced_PLL
,
330 static const intel_limit_t intel_limits_i9xx_lvds
= {
331 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
332 .vco
= { .min
= I9XX_VCO_MIN
, .max
= I9XX_VCO_MAX
},
333 .n
= { .min
= I9XX_N_MIN
, .max
= I9XX_N_MAX
},
334 .m
= { .min
= I9XX_M_MIN
, .max
= I9XX_M_MAX
},
335 .m1
= { .min
= I9XX_M1_MIN
, .max
= I9XX_M1_MAX
},
336 .m2
= { .min
= I9XX_M2_MIN
, .max
= I9XX_M2_MAX
},
337 .p
= { .min
= I9XX_P_LVDS_MIN
, .max
= I9XX_P_LVDS_MAX
},
338 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
339 /* The single-channel range is 25-112Mhz, and dual-channel
340 * is 80-224Mhz. Prefer single channel as much as possible.
342 .p2
= { .dot_limit
= I9XX_P2_LVDS_SLOW_LIMIT
,
343 .p2_slow
= I9XX_P2_LVDS_SLOW
, .p2_fast
= I9XX_P2_LVDS_FAST
},
344 .find_pll
= intel_find_best_PLL
,
345 .find_reduced_pll
= intel_find_best_reduced_PLL
,
348 /* below parameter and function is for G4X Chipset Family*/
349 static const intel_limit_t intel_limits_g4x_sdvo
= {
350 .dot
= { .min
= G4X_DOT_SDVO_MIN
, .max
= G4X_DOT_SDVO_MAX
},
351 .vco
= { .min
= G4X_VCO_MIN
, .max
= G4X_VCO_MAX
},
352 .n
= { .min
= G4X_N_SDVO_MIN
, .max
= G4X_N_SDVO_MAX
},
353 .m
= { .min
= G4X_M_SDVO_MIN
, .max
= G4X_M_SDVO_MAX
},
354 .m1
= { .min
= G4X_M1_SDVO_MIN
, .max
= G4X_M1_SDVO_MAX
},
355 .m2
= { .min
= G4X_M2_SDVO_MIN
, .max
= G4X_M2_SDVO_MAX
},
356 .p
= { .min
= G4X_P_SDVO_MIN
, .max
= G4X_P_SDVO_MAX
},
357 .p1
= { .min
= G4X_P1_SDVO_MIN
, .max
= G4X_P1_SDVO_MAX
},
358 .p2
= { .dot_limit
= G4X_P2_SDVO_LIMIT
,
359 .p2_slow
= G4X_P2_SDVO_SLOW
,
360 .p2_fast
= G4X_P2_SDVO_FAST
362 .find_pll
= intel_g4x_find_best_PLL
,
363 .find_reduced_pll
= intel_g4x_find_best_PLL
,
366 static const intel_limit_t intel_limits_g4x_hdmi
= {
367 .dot
= { .min
= G4X_DOT_HDMI_DAC_MIN
, .max
= G4X_DOT_HDMI_DAC_MAX
},
368 .vco
= { .min
= G4X_VCO_MIN
, .max
= G4X_VCO_MAX
},
369 .n
= { .min
= G4X_N_HDMI_DAC_MIN
, .max
= G4X_N_HDMI_DAC_MAX
},
370 .m
= { .min
= G4X_M_HDMI_DAC_MIN
, .max
= G4X_M_HDMI_DAC_MAX
},
371 .m1
= { .min
= G4X_M1_HDMI_DAC_MIN
, .max
= G4X_M1_HDMI_DAC_MAX
},
372 .m2
= { .min
= G4X_M2_HDMI_DAC_MIN
, .max
= G4X_M2_HDMI_DAC_MAX
},
373 .p
= { .min
= G4X_P_HDMI_DAC_MIN
, .max
= G4X_P_HDMI_DAC_MAX
},
374 .p1
= { .min
= G4X_P1_HDMI_DAC_MIN
, .max
= G4X_P1_HDMI_DAC_MAX
},
375 .p2
= { .dot_limit
= G4X_P2_HDMI_DAC_LIMIT
,
376 .p2_slow
= G4X_P2_HDMI_DAC_SLOW
,
377 .p2_fast
= G4X_P2_HDMI_DAC_FAST
379 .find_pll
= intel_g4x_find_best_PLL
,
380 .find_reduced_pll
= intel_g4x_find_best_PLL
,
383 static const intel_limit_t intel_limits_g4x_single_channel_lvds
= {
384 .dot
= { .min
= G4X_DOT_SINGLE_CHANNEL_LVDS_MIN
,
385 .max
= G4X_DOT_SINGLE_CHANNEL_LVDS_MAX
},
386 .vco
= { .min
= G4X_VCO_MIN
,
387 .max
= G4X_VCO_MAX
},
388 .n
= { .min
= G4X_N_SINGLE_CHANNEL_LVDS_MIN
,
389 .max
= G4X_N_SINGLE_CHANNEL_LVDS_MAX
},
390 .m
= { .min
= G4X_M_SINGLE_CHANNEL_LVDS_MIN
,
391 .max
= G4X_M_SINGLE_CHANNEL_LVDS_MAX
},
392 .m1
= { .min
= G4X_M1_SINGLE_CHANNEL_LVDS_MIN
,
393 .max
= G4X_M1_SINGLE_CHANNEL_LVDS_MAX
},
394 .m2
= { .min
= G4X_M2_SINGLE_CHANNEL_LVDS_MIN
,
395 .max
= G4X_M2_SINGLE_CHANNEL_LVDS_MAX
},
396 .p
= { .min
= G4X_P_SINGLE_CHANNEL_LVDS_MIN
,
397 .max
= G4X_P_SINGLE_CHANNEL_LVDS_MAX
},
398 .p1
= { .min
= G4X_P1_SINGLE_CHANNEL_LVDS_MIN
,
399 .max
= G4X_P1_SINGLE_CHANNEL_LVDS_MAX
},
400 .p2
= { .dot_limit
= G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT
,
401 .p2_slow
= G4X_P2_SINGLE_CHANNEL_LVDS_SLOW
,
402 .p2_fast
= G4X_P2_SINGLE_CHANNEL_LVDS_FAST
404 .find_pll
= intel_g4x_find_best_PLL
,
405 .find_reduced_pll
= intel_g4x_find_best_PLL
,
408 static const intel_limit_t intel_limits_g4x_dual_channel_lvds
= {
409 .dot
= { .min
= G4X_DOT_DUAL_CHANNEL_LVDS_MIN
,
410 .max
= G4X_DOT_DUAL_CHANNEL_LVDS_MAX
},
411 .vco
= { .min
= G4X_VCO_MIN
,
412 .max
= G4X_VCO_MAX
},
413 .n
= { .min
= G4X_N_DUAL_CHANNEL_LVDS_MIN
,
414 .max
= G4X_N_DUAL_CHANNEL_LVDS_MAX
},
415 .m
= { .min
= G4X_M_DUAL_CHANNEL_LVDS_MIN
,
416 .max
= G4X_M_DUAL_CHANNEL_LVDS_MAX
},
417 .m1
= { .min
= G4X_M1_DUAL_CHANNEL_LVDS_MIN
,
418 .max
= G4X_M1_DUAL_CHANNEL_LVDS_MAX
},
419 .m2
= { .min
= G4X_M2_DUAL_CHANNEL_LVDS_MIN
,
420 .max
= G4X_M2_DUAL_CHANNEL_LVDS_MAX
},
421 .p
= { .min
= G4X_P_DUAL_CHANNEL_LVDS_MIN
,
422 .max
= G4X_P_DUAL_CHANNEL_LVDS_MAX
},
423 .p1
= { .min
= G4X_P1_DUAL_CHANNEL_LVDS_MIN
,
424 .max
= G4X_P1_DUAL_CHANNEL_LVDS_MAX
},
425 .p2
= { .dot_limit
= G4X_P2_DUAL_CHANNEL_LVDS_LIMIT
,
426 .p2_slow
= G4X_P2_DUAL_CHANNEL_LVDS_SLOW
,
427 .p2_fast
= G4X_P2_DUAL_CHANNEL_LVDS_FAST
429 .find_pll
= intel_g4x_find_best_PLL
,
430 .find_reduced_pll
= intel_g4x_find_best_PLL
,
433 static const intel_limit_t intel_limits_g4x_display_port
= {
434 .dot
= { .min
= G4X_DOT_DISPLAY_PORT_MIN
,
435 .max
= G4X_DOT_DISPLAY_PORT_MAX
},
436 .vco
= { .min
= G4X_VCO_MIN
,
438 .n
= { .min
= G4X_N_DISPLAY_PORT_MIN
,
439 .max
= G4X_N_DISPLAY_PORT_MAX
},
440 .m
= { .min
= G4X_M_DISPLAY_PORT_MIN
,
441 .max
= G4X_M_DISPLAY_PORT_MAX
},
442 .m1
= { .min
= G4X_M1_DISPLAY_PORT_MIN
,
443 .max
= G4X_M1_DISPLAY_PORT_MAX
},
444 .m2
= { .min
= G4X_M2_DISPLAY_PORT_MIN
,
445 .max
= G4X_M2_DISPLAY_PORT_MAX
},
446 .p
= { .min
= G4X_P_DISPLAY_PORT_MIN
,
447 .max
= G4X_P_DISPLAY_PORT_MAX
},
448 .p1
= { .min
= G4X_P1_DISPLAY_PORT_MIN
,
449 .max
= G4X_P1_DISPLAY_PORT_MAX
},
450 .p2
= { .dot_limit
= G4X_P2_DISPLAY_PORT_LIMIT
,
451 .p2_slow
= G4X_P2_DISPLAY_PORT_SLOW
,
452 .p2_fast
= G4X_P2_DISPLAY_PORT_FAST
},
453 .find_pll
= intel_find_pll_g4x_dp
,
456 static const intel_limit_t intel_limits_igd_sdvo
= {
457 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
458 .vco
= { .min
= IGD_VCO_MIN
, .max
= IGD_VCO_MAX
},
459 .n
= { .min
= IGD_N_MIN
, .max
= IGD_N_MAX
},
460 .m
= { .min
= IGD_M_MIN
, .max
= IGD_M_MAX
},
461 .m1
= { .min
= IGD_M1_MIN
, .max
= IGD_M1_MAX
},
462 .m2
= { .min
= IGD_M2_MIN
, .max
= IGD_M2_MAX
},
463 .p
= { .min
= I9XX_P_SDVO_DAC_MIN
, .max
= I9XX_P_SDVO_DAC_MAX
},
464 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
465 .p2
= { .dot_limit
= I9XX_P2_SDVO_DAC_SLOW_LIMIT
,
466 .p2_slow
= I9XX_P2_SDVO_DAC_SLOW
, .p2_fast
= I9XX_P2_SDVO_DAC_FAST
},
467 .find_pll
= intel_find_best_PLL
,
468 .find_reduced_pll
= intel_find_best_reduced_PLL
,
471 static const intel_limit_t intel_limits_igd_lvds
= {
472 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
473 .vco
= { .min
= IGD_VCO_MIN
, .max
= IGD_VCO_MAX
},
474 .n
= { .min
= IGD_N_MIN
, .max
= IGD_N_MAX
},
475 .m
= { .min
= IGD_M_MIN
, .max
= IGD_M_MAX
},
476 .m1
= { .min
= IGD_M1_MIN
, .max
= IGD_M1_MAX
},
477 .m2
= { .min
= IGD_M2_MIN
, .max
= IGD_M2_MAX
},
478 .p
= { .min
= IGD_P_LVDS_MIN
, .max
= IGD_P_LVDS_MAX
},
479 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
480 /* IGD only supports single-channel mode. */
481 .p2
= { .dot_limit
= I9XX_P2_LVDS_SLOW_LIMIT
,
482 .p2_slow
= I9XX_P2_LVDS_SLOW
, .p2_fast
= I9XX_P2_LVDS_SLOW
},
483 .find_pll
= intel_find_best_PLL
,
484 .find_reduced_pll
= intel_find_best_reduced_PLL
,
487 static const intel_limit_t intel_limits_igdng_sdvo
= {
488 .dot
= { .min
= IGDNG_DOT_MIN
, .max
= IGDNG_DOT_MAX
},
489 .vco
= { .min
= IGDNG_VCO_MIN
, .max
= IGDNG_VCO_MAX
},
490 .n
= { .min
= IGDNG_N_MIN
, .max
= IGDNG_N_MAX
},
491 .m
= { .min
= IGDNG_M_MIN
, .max
= IGDNG_M_MAX
},
492 .m1
= { .min
= IGDNG_M1_MIN
, .max
= IGDNG_M1_MAX
},
493 .m2
= { .min
= IGDNG_M2_MIN
, .max
= IGDNG_M2_MAX
},
494 .p
= { .min
= IGDNG_P_SDVO_DAC_MIN
, .max
= IGDNG_P_SDVO_DAC_MAX
},
495 .p1
= { .min
= IGDNG_P1_MIN
, .max
= IGDNG_P1_MAX
},
496 .p2
= { .dot_limit
= IGDNG_P2_DOT_LIMIT
,
497 .p2_slow
= IGDNG_P2_SDVO_DAC_SLOW
,
498 .p2_fast
= IGDNG_P2_SDVO_DAC_FAST
},
499 .find_pll
= intel_igdng_find_best_PLL
,
502 static const intel_limit_t intel_limits_igdng_lvds
= {
503 .dot
= { .min
= IGDNG_DOT_MIN
, .max
= IGDNG_DOT_MAX
},
504 .vco
= { .min
= IGDNG_VCO_MIN
, .max
= IGDNG_VCO_MAX
},
505 .n
= { .min
= IGDNG_N_MIN
, .max
= IGDNG_N_MAX
},
506 .m
= { .min
= IGDNG_M_MIN
, .max
= IGDNG_M_MAX
},
507 .m1
= { .min
= IGDNG_M1_MIN
, .max
= IGDNG_M1_MAX
},
508 .m2
= { .min
= IGDNG_M2_MIN
, .max
= IGDNG_M2_MAX
},
509 .p
= { .min
= IGDNG_P_LVDS_MIN
, .max
= IGDNG_P_LVDS_MAX
},
510 .p1
= { .min
= IGDNG_P1_MIN
, .max
= IGDNG_P1_MAX
},
511 .p2
= { .dot_limit
= IGDNG_P2_DOT_LIMIT
,
512 .p2_slow
= IGDNG_P2_LVDS_SLOW
,
513 .p2_fast
= IGDNG_P2_LVDS_FAST
},
514 .find_pll
= intel_igdng_find_best_PLL
,
517 static const intel_limit_t
*intel_igdng_limit(struct drm_crtc
*crtc
)
519 const intel_limit_t
*limit
;
520 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
521 limit
= &intel_limits_igdng_lvds
;
523 limit
= &intel_limits_igdng_sdvo
;
528 static const intel_limit_t
*intel_g4x_limit(struct drm_crtc
*crtc
)
530 struct drm_device
*dev
= crtc
->dev
;
531 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
532 const intel_limit_t
*limit
;
534 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
535 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
537 /* LVDS with dual channel */
538 limit
= &intel_limits_g4x_dual_channel_lvds
;
540 /* LVDS with dual channel */
541 limit
= &intel_limits_g4x_single_channel_lvds
;
542 } else if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_HDMI
) ||
543 intel_pipe_has_type(crtc
, INTEL_OUTPUT_ANALOG
)) {
544 limit
= &intel_limits_g4x_hdmi
;
545 } else if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_SDVO
)) {
546 limit
= &intel_limits_g4x_sdvo
;
547 } else if (intel_pipe_has_type (crtc
, INTEL_OUTPUT_DISPLAYPORT
)) {
548 limit
= &intel_limits_g4x_display_port
;
549 } else /* The option is for other outputs */
550 limit
= &intel_limits_i9xx_sdvo
;
555 static const intel_limit_t
*intel_limit(struct drm_crtc
*crtc
)
557 struct drm_device
*dev
= crtc
->dev
;
558 const intel_limit_t
*limit
;
561 limit
= intel_igdng_limit(crtc
);
562 else if (IS_G4X(dev
)) {
563 limit
= intel_g4x_limit(crtc
);
564 } else if (IS_I9XX(dev
) && !IS_IGD(dev
)) {
565 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
566 limit
= &intel_limits_i9xx_lvds
;
568 limit
= &intel_limits_i9xx_sdvo
;
569 } else if (IS_IGD(dev
)) {
570 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
571 limit
= &intel_limits_igd_lvds
;
573 limit
= &intel_limits_igd_sdvo
;
575 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
576 limit
= &intel_limits_i8xx_lvds
;
578 limit
= &intel_limits_i8xx_dvo
;
583 /* m1 is reserved as 0 in IGD, n is a ring counter */
584 static void igd_clock(int refclk
, intel_clock_t
*clock
)
586 clock
->m
= clock
->m2
+ 2;
587 clock
->p
= clock
->p1
* clock
->p2
;
588 clock
->vco
= refclk
* clock
->m
/ clock
->n
;
589 clock
->dot
= clock
->vco
/ clock
->p
;
592 static void intel_clock(struct drm_device
*dev
, int refclk
, intel_clock_t
*clock
)
595 igd_clock(refclk
, clock
);
598 clock
->m
= 5 * (clock
->m1
+ 2) + (clock
->m2
+ 2);
599 clock
->p
= clock
->p1
* clock
->p2
;
600 clock
->vco
= refclk
* clock
->m
/ (clock
->n
+ 2);
601 clock
->dot
= clock
->vco
/ clock
->p
;
605 * Returns whether any output on the specified pipe is of the specified type
607 bool intel_pipe_has_type (struct drm_crtc
*crtc
, int type
)
609 struct drm_device
*dev
= crtc
->dev
;
610 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
611 struct drm_connector
*l_entry
;
613 list_for_each_entry(l_entry
, &mode_config
->connector_list
, head
) {
614 if (l_entry
->encoder
&&
615 l_entry
->encoder
->crtc
== crtc
) {
616 struct intel_output
*intel_output
= to_intel_output(l_entry
);
617 if (intel_output
->type
== type
)
624 struct drm_connector
*
625 intel_pipe_get_output (struct drm_crtc
*crtc
)
627 struct drm_device
*dev
= crtc
->dev
;
628 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
629 struct drm_connector
*l_entry
, *ret
= NULL
;
631 list_for_each_entry(l_entry
, &mode_config
->connector_list
, head
) {
632 if (l_entry
->encoder
&&
633 l_entry
->encoder
->crtc
== crtc
) {
641 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
643 * Returns whether the given set of divisors are valid for a given refclk with
644 * the given connectors.
647 static bool intel_PLL_is_valid(struct drm_crtc
*crtc
, intel_clock_t
*clock
)
649 const intel_limit_t
*limit
= intel_limit (crtc
);
650 struct drm_device
*dev
= crtc
->dev
;
652 if (clock
->p1
< limit
->p1
.min
|| limit
->p1
.max
< clock
->p1
)
653 INTELPllInvalid ("p1 out of range\n");
654 if (clock
->p
< limit
->p
.min
|| limit
->p
.max
< clock
->p
)
655 INTELPllInvalid ("p out of range\n");
656 if (clock
->m2
< limit
->m2
.min
|| limit
->m2
.max
< clock
->m2
)
657 INTELPllInvalid ("m2 out of range\n");
658 if (clock
->m1
< limit
->m1
.min
|| limit
->m1
.max
< clock
->m1
)
659 INTELPllInvalid ("m1 out of range\n");
660 if (clock
->m1
<= clock
->m2
&& !IS_IGD(dev
))
661 INTELPllInvalid ("m1 <= m2\n");
662 if (clock
->m
< limit
->m
.min
|| limit
->m
.max
< clock
->m
)
663 INTELPllInvalid ("m out of range\n");
664 if (clock
->n
< limit
->n
.min
|| limit
->n
.max
< clock
->n
)
665 INTELPllInvalid ("n out of range\n");
666 if (clock
->vco
< limit
->vco
.min
|| limit
->vco
.max
< clock
->vco
)
667 INTELPllInvalid ("vco out of range\n");
668 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
669 * connector, etc., rather than just a single range.
671 if (clock
->dot
< limit
->dot
.min
|| limit
->dot
.max
< clock
->dot
)
672 INTELPllInvalid ("dot out of range\n");
678 intel_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
679 int target
, int refclk
, intel_clock_t
*best_clock
)
682 struct drm_device
*dev
= crtc
->dev
;
683 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
687 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
) &&
688 (I915_READ(LVDS
)) != 0) {
690 * For LVDS, if the panel is on, just rely on its current
691 * settings for dual-channel. We haven't figured out how to
692 * reliably set up different single/dual channel state, if we
695 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
697 clock
.p2
= limit
->p2
.p2_fast
;
699 clock
.p2
= limit
->p2
.p2_slow
;
701 if (target
< limit
->p2
.dot_limit
)
702 clock
.p2
= limit
->p2
.p2_slow
;
704 clock
.p2
= limit
->p2
.p2_fast
;
707 memset (best_clock
, 0, sizeof (*best_clock
));
709 for (clock
.p1
= limit
->p1
.max
; clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
710 for (clock
.m1
= limit
->m1
.min
; clock
.m1
<= limit
->m1
.max
;
712 for (clock
.m2
= limit
->m2
.min
;
713 clock
.m2
<= limit
->m2
.max
; clock
.m2
++) {
714 /* m1 is always 0 in IGD */
715 if (clock
.m2
>= clock
.m1
&& !IS_IGD(dev
))
717 for (clock
.n
= limit
->n
.min
;
718 clock
.n
<= limit
->n
.max
; clock
.n
++) {
721 intel_clock(dev
, refclk
, &clock
);
723 if (!intel_PLL_is_valid(crtc
, &clock
))
726 this_err
= abs(clock
.dot
- target
);
727 if (this_err
< err
) {
736 return (err
!= target
);
741 intel_find_best_reduced_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
742 int target
, int refclk
, intel_clock_t
*best_clock
)
745 struct drm_device
*dev
= crtc
->dev
;
750 memcpy(&clock
, best_clock
, sizeof(intel_clock_t
));
752 for (clock
.m1
= limit
->m1
.min
; clock
.m1
<= limit
->m1
.max
; clock
.m1
++) {
753 for (clock
.m2
= limit
->m2
.min
; clock
.m2
<= limit
->m2
.max
; clock
.m2
++) {
754 /* m1 is always 0 in IGD */
755 if (clock
.m2
>= clock
.m1
&& !IS_IGD(dev
))
757 for (clock
.n
= limit
->n
.min
; clock
.n
<= limit
->n
.max
;
761 intel_clock(dev
, refclk
, &clock
);
763 if (!intel_PLL_is_valid(crtc
, &clock
))
766 this_err
= abs(clock
.dot
- target
);
767 if (this_err
< err
) {
780 intel_g4x_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
781 int target
, int refclk
, intel_clock_t
*best_clock
)
783 struct drm_device
*dev
= crtc
->dev
;
784 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
788 /* approximately equals target * 0.00488 */
789 int err_most
= (target
>> 8) + (target
>> 10);
792 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
793 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
795 clock
.p2
= limit
->p2
.p2_fast
;
797 clock
.p2
= limit
->p2
.p2_slow
;
799 if (target
< limit
->p2
.dot_limit
)
800 clock
.p2
= limit
->p2
.p2_slow
;
802 clock
.p2
= limit
->p2
.p2_fast
;
805 memset(best_clock
, 0, sizeof(*best_clock
));
806 max_n
= limit
->n
.max
;
807 /* based on hardware requriment prefer smaller n to precision */
808 for (clock
.n
= limit
->n
.min
; clock
.n
<= max_n
; clock
.n
++) {
809 /* based on hardware requirment prefere larger m1,m2 */
810 for (clock
.m1
= limit
->m1
.max
;
811 clock
.m1
>= limit
->m1
.min
; clock
.m1
--) {
812 for (clock
.m2
= limit
->m2
.max
;
813 clock
.m2
>= limit
->m2
.min
; clock
.m2
--) {
814 for (clock
.p1
= limit
->p1
.max
;
815 clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
818 intel_clock(dev
, refclk
, &clock
);
819 if (!intel_PLL_is_valid(crtc
, &clock
))
821 this_err
= abs(clock
.dot
- target
) ;
822 if (this_err
< err_most
) {
836 intel_find_pll_igdng_dp(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
837 int target
, int refclk
, intel_clock_t
*best_clock
)
839 struct drm_device
*dev
= crtc
->dev
;
841 if (target
< 200000) {
854 intel_clock(dev
, refclk
, &clock
);
855 memcpy(best_clock
, &clock
, sizeof(intel_clock_t
));
860 intel_igdng_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
861 int target
, int refclk
, intel_clock_t
*best_clock
)
863 struct drm_device
*dev
= crtc
->dev
;
864 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
869 /* eDP has only 2 clock choice, no n/m/p setting */
873 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_DISPLAYPORT
))
874 return intel_find_pll_igdng_dp(limit
, crtc
, target
,
877 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
878 if ((I915_READ(PCH_LVDS
) & LVDS_CLKB_POWER_MASK
) ==
880 clock
.p2
= limit
->p2
.p2_fast
;
882 clock
.p2
= limit
->p2
.p2_slow
;
884 if (target
< limit
->p2
.dot_limit
)
885 clock
.p2
= limit
->p2
.p2_slow
;
887 clock
.p2
= limit
->p2
.p2_fast
;
890 memset(best_clock
, 0, sizeof(*best_clock
));
891 for (clock
.p1
= limit
->p1
.max
; clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
892 /* based on hardware requriment prefer smaller n to precision */
893 for (clock
.n
= limit
->n
.min
; clock
.n
<= limit
->n
.max
; clock
.n
++) {
894 /* based on hardware requirment prefere larger m1,m2 */
895 for (clock
.m1
= limit
->m1
.max
;
896 clock
.m1
>= limit
->m1
.min
; clock
.m1
--) {
897 for (clock
.m2
= limit
->m2
.max
;
898 clock
.m2
>= limit
->m2
.min
; clock
.m2
--) {
901 intel_clock(dev
, refclk
, &clock
);
902 if (!intel_PLL_is_valid(crtc
, &clock
))
904 this_err
= abs((10000 - (target
*10000/clock
.dot
)));
905 if (this_err
< err_most
) {
907 /* found on first matching */
909 } else if (this_err
< err_min
) {
921 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
923 intel_find_pll_g4x_dp(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
924 int target
, int refclk
, intel_clock_t
*best_clock
)
927 if (target
< 200000) {
940 clock
.m
= 5 * (clock
.m1
+ 2) + (clock
.m2
+ 2);
941 clock
.p
= (clock
.p1
* clock
.p2
);
942 clock
.dot
= 96000 * clock
.m
/ (clock
.n
+ 2) / clock
.p
;
944 memcpy(best_clock
, &clock
, sizeof(intel_clock_t
));
949 intel_wait_for_vblank(struct drm_device
*dev
)
951 /* Wait for 20ms, i.e. one cycle at 50hz. */
955 /* Parameters have changed, update FBC info */
956 static void i8xx_enable_fbc(struct drm_crtc
*crtc
, unsigned long interval
)
958 struct drm_device
*dev
= crtc
->dev
;
959 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
960 struct drm_framebuffer
*fb
= crtc
->fb
;
961 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
962 struct drm_i915_gem_object
*obj_priv
= intel_fb
->obj
->driver_private
;
963 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
965 u32 fbc_ctl
, fbc_ctl2
;
967 dev_priv
->cfb_pitch
= dev_priv
->cfb_size
/ FBC_LL_SIZE
;
969 if (fb
->pitch
< dev_priv
->cfb_pitch
)
970 dev_priv
->cfb_pitch
= fb
->pitch
;
972 /* FBC_CTL wants 64B units */
973 dev_priv
->cfb_pitch
= (dev_priv
->cfb_pitch
/ 64) - 1;
974 dev_priv
->cfb_fence
= obj_priv
->fence_reg
;
975 dev_priv
->cfb_plane
= intel_crtc
->plane
;
976 plane
= dev_priv
->cfb_plane
== 0 ? FBC_CTL_PLANEA
: FBC_CTL_PLANEB
;
979 for (i
= 0; i
< (FBC_LL_SIZE
/ 32) + 1; i
++)
980 I915_WRITE(FBC_TAG
+ (i
* 4), 0);
983 fbc_ctl2
= FBC_CTL_FENCE_DBL
| FBC_CTL_IDLE_IMM
| plane
;
984 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
985 fbc_ctl2
|= FBC_CTL_CPU_FENCE
;
986 I915_WRITE(FBC_CONTROL2
, fbc_ctl2
);
987 I915_WRITE(FBC_FENCE_OFF
, crtc
->y
);
990 fbc_ctl
= FBC_CTL_EN
| FBC_CTL_PERIODIC
;
991 fbc_ctl
|= (dev_priv
->cfb_pitch
& 0xff) << FBC_CTL_STRIDE_SHIFT
;
992 fbc_ctl
|= (interval
& 0x2fff) << FBC_CTL_INTERVAL_SHIFT
;
993 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
994 fbc_ctl
|= dev_priv
->cfb_fence
;
995 I915_WRITE(FBC_CONTROL
, fbc_ctl
);
997 DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
998 dev_priv
->cfb_pitch
, crtc
->y
, dev_priv
->cfb_plane
);
1001 void i8xx_disable_fbc(struct drm_device
*dev
)
1003 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1006 if (!I915_HAS_FBC(dev
))
1009 /* Disable compression */
1010 fbc_ctl
= I915_READ(FBC_CONTROL
);
1011 fbc_ctl
&= ~FBC_CTL_EN
;
1012 I915_WRITE(FBC_CONTROL
, fbc_ctl
);
1014 /* Wait for compressing bit to clear */
1015 while (I915_READ(FBC_STATUS
) & FBC_STAT_COMPRESSING
)
1018 intel_wait_for_vblank(dev
);
1020 DRM_DEBUG_KMS("disabled FBC\n");
1023 static bool i8xx_fbc_enabled(struct drm_crtc
*crtc
)
1025 struct drm_device
*dev
= crtc
->dev
;
1026 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1028 return I915_READ(FBC_CONTROL
) & FBC_CTL_EN
;
1031 static void g4x_enable_fbc(struct drm_crtc
*crtc
, unsigned long interval
)
1033 struct drm_device
*dev
= crtc
->dev
;
1034 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1035 struct drm_framebuffer
*fb
= crtc
->fb
;
1036 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
1037 struct drm_i915_gem_object
*obj_priv
= intel_fb
->obj
->driver_private
;
1038 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1039 int plane
= (intel_crtc
->plane
== 0 ? DPFC_CTL_PLANEA
:
1041 unsigned long stall_watermark
= 200;
1044 dev_priv
->cfb_pitch
= (dev_priv
->cfb_pitch
/ 64) - 1;
1045 dev_priv
->cfb_fence
= obj_priv
->fence_reg
;
1046 dev_priv
->cfb_plane
= intel_crtc
->plane
;
1048 dpfc_ctl
= plane
| DPFC_SR_EN
| DPFC_CTL_LIMIT_1X
;
1049 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
) {
1050 dpfc_ctl
|= DPFC_CTL_FENCE_EN
| dev_priv
->cfb_fence
;
1051 I915_WRITE(DPFC_CHICKEN
, DPFC_HT_MODIFY
);
1053 I915_WRITE(DPFC_CHICKEN
, ~DPFC_HT_MODIFY
);
1056 I915_WRITE(DPFC_CONTROL
, dpfc_ctl
);
1057 I915_WRITE(DPFC_RECOMP_CTL
, DPFC_RECOMP_STALL_EN
|
1058 (stall_watermark
<< DPFC_RECOMP_STALL_WM_SHIFT
) |
1059 (interval
<< DPFC_RECOMP_TIMER_COUNT_SHIFT
));
1060 I915_WRITE(DPFC_FENCE_YOFF
, crtc
->y
);
1063 I915_WRITE(DPFC_CONTROL
, I915_READ(DPFC_CONTROL
) | DPFC_CTL_EN
);
1065 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc
->plane
);
1068 void g4x_disable_fbc(struct drm_device
*dev
)
1070 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1073 /* Disable compression */
1074 dpfc_ctl
= I915_READ(DPFC_CONTROL
);
1075 dpfc_ctl
&= ~DPFC_CTL_EN
;
1076 I915_WRITE(DPFC_CONTROL
, dpfc_ctl
);
1077 intel_wait_for_vblank(dev
);
1079 DRM_DEBUG_KMS("disabled FBC\n");
1082 static bool g4x_fbc_enabled(struct drm_crtc
*crtc
)
1084 struct drm_device
*dev
= crtc
->dev
;
1085 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1087 return I915_READ(DPFC_CONTROL
) & DPFC_CTL_EN
;
1091 * intel_update_fbc - enable/disable FBC as needed
1092 * @crtc: CRTC to point the compressor at
1093 * @mode: mode in use
1095 * Set up the framebuffer compression hardware at mode set time. We
1096 * enable it if possible:
1097 * - plane A only (on pre-965)
1098 * - no pixel mulitply/line duplication
1099 * - no alpha buffer discard
1101 * - framebuffer <= 2048 in width, 1536 in height
1103 * We can't assume that any compression will take place (worst case),
1104 * so the compressed buffer has to be the same size as the uncompressed
1105 * one. It also must reside (along with the line length buffer) in
1108 * We need to enable/disable FBC on a global basis.
1110 static void intel_update_fbc(struct drm_crtc
*crtc
,
1111 struct drm_display_mode
*mode
)
1113 struct drm_device
*dev
= crtc
->dev
;
1114 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1115 struct drm_framebuffer
*fb
= crtc
->fb
;
1116 struct intel_framebuffer
*intel_fb
;
1117 struct drm_i915_gem_object
*obj_priv
;
1118 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1119 int plane
= intel_crtc
->plane
;
1121 if (!i915_powersave
)
1124 if (!dev_priv
->display
.fbc_enabled
||
1125 !dev_priv
->display
.enable_fbc
||
1126 !dev_priv
->display
.disable_fbc
)
1132 intel_fb
= to_intel_framebuffer(fb
);
1133 obj_priv
= intel_fb
->obj
->driver_private
;
1136 * If FBC is already on, we just have to verify that we can
1137 * keep it that way...
1138 * Need to disable if:
1139 * - changing FBC params (stride, fence, mode)
1140 * - new fb is too large to fit in compressed buffer
1141 * - going to an unsupported config (interlace, pixel multiply, etc.)
1143 if (intel_fb
->obj
->size
> dev_priv
->cfb_size
) {
1144 DRM_DEBUG_KMS("framebuffer too large, disabling "
1148 if ((mode
->flags
& DRM_MODE_FLAG_INTERLACE
) ||
1149 (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)) {
1150 DRM_DEBUG_KMS("mode incompatible with compression, "
1154 if ((mode
->hdisplay
> 2048) ||
1155 (mode
->vdisplay
> 1536)) {
1156 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1159 if ((IS_I915GM(dev
) || IS_I945GM(dev
)) && plane
!= 0) {
1160 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1163 if (obj_priv
->tiling_mode
!= I915_TILING_X
) {
1164 DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
1168 if (dev_priv
->display
.fbc_enabled(crtc
)) {
1169 /* We can re-enable it in this case, but need to update pitch */
1170 if (fb
->pitch
> dev_priv
->cfb_pitch
)
1171 dev_priv
->display
.disable_fbc(dev
);
1172 if (obj_priv
->fence_reg
!= dev_priv
->cfb_fence
)
1173 dev_priv
->display
.disable_fbc(dev
);
1174 if (plane
!= dev_priv
->cfb_plane
)
1175 dev_priv
->display
.disable_fbc(dev
);
1178 if (!dev_priv
->display
.fbc_enabled(crtc
)) {
1179 /* Now try to turn it back on if possible */
1180 dev_priv
->display
.enable_fbc(crtc
, 500);
1186 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
1187 /* Multiple disables should be harmless */
1188 if (dev_priv
->display
.fbc_enabled(crtc
))
1189 dev_priv
->display
.disable_fbc(dev
);
1193 intel_pipe_set_base(struct drm_crtc
*crtc
, int x
, int y
,
1194 struct drm_framebuffer
*old_fb
)
1196 struct drm_device
*dev
= crtc
->dev
;
1197 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1198 struct drm_i915_master_private
*master_priv
;
1199 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1200 struct intel_framebuffer
*intel_fb
;
1201 struct drm_i915_gem_object
*obj_priv
;
1202 struct drm_gem_object
*obj
;
1203 int pipe
= intel_crtc
->pipe
;
1204 int plane
= intel_crtc
->plane
;
1205 unsigned long Start
, Offset
;
1206 int dspbase
= (plane
== 0 ? DSPAADDR
: DSPBADDR
);
1207 int dspsurf
= (plane
== 0 ? DSPASURF
: DSPBSURF
);
1208 int dspstride
= (plane
== 0) ? DSPASTRIDE
: DSPBSTRIDE
;
1209 int dsptileoff
= (plane
== 0 ? DSPATILEOFF
: DSPBTILEOFF
);
1210 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1211 u32 dspcntr
, alignment
;
1216 DRM_DEBUG_KMS("No FB bound\n");
1225 DRM_ERROR("Can't update plane %d in SAREA\n", plane
);
1229 intel_fb
= to_intel_framebuffer(crtc
->fb
);
1230 obj
= intel_fb
->obj
;
1231 obj_priv
= obj
->driver_private
;
1233 switch (obj_priv
->tiling_mode
) {
1234 case I915_TILING_NONE
:
1235 alignment
= 64 * 1024;
1238 /* pin() will align the object as required by fence */
1242 /* FIXME: Is this true? */
1243 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1249 mutex_lock(&dev
->struct_mutex
);
1250 ret
= i915_gem_object_pin(obj
, alignment
);
1252 mutex_unlock(&dev
->struct_mutex
);
1256 ret
= i915_gem_object_set_to_gtt_domain(obj
, 1);
1258 i915_gem_object_unpin(obj
);
1259 mutex_unlock(&dev
->struct_mutex
);
1263 /* Install a fence for tiled scan-out. Pre-i965 always needs a fence,
1264 * whereas 965+ only requires a fence if using framebuffer compression.
1265 * For simplicity, we always install a fence as the cost is not that onerous.
1267 if (obj_priv
->fence_reg
== I915_FENCE_REG_NONE
&&
1268 obj_priv
->tiling_mode
!= I915_TILING_NONE
) {
1269 ret
= i915_gem_object_get_fence_reg(obj
);
1271 i915_gem_object_unpin(obj
);
1272 mutex_unlock(&dev
->struct_mutex
);
1277 dspcntr
= I915_READ(dspcntr_reg
);
1278 /* Mask out pixel format bits in case we change it */
1279 dspcntr
&= ~DISPPLANE_PIXFORMAT_MASK
;
1280 switch (crtc
->fb
->bits_per_pixel
) {
1282 dspcntr
|= DISPPLANE_8BPP
;
1285 if (crtc
->fb
->depth
== 15)
1286 dspcntr
|= DISPPLANE_15_16BPP
;
1288 dspcntr
|= DISPPLANE_16BPP
;
1292 if (crtc
->fb
->depth
== 30)
1293 dspcntr
|= DISPPLANE_32BPP_30BIT_NO_ALPHA
;
1295 dspcntr
|= DISPPLANE_32BPP_NO_ALPHA
;
1298 DRM_ERROR("Unknown color depth\n");
1299 i915_gem_object_unpin(obj
);
1300 mutex_unlock(&dev
->struct_mutex
);
1303 if (IS_I965G(dev
)) {
1304 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
1305 dspcntr
|= DISPPLANE_TILED
;
1307 dspcntr
&= ~DISPPLANE_TILED
;
1312 dspcntr
|= DISPPLANE_TRICKLE_FEED_DISABLE
;
1314 I915_WRITE(dspcntr_reg
, dspcntr
);
1316 Start
= obj_priv
->gtt_offset
;
1317 Offset
= y
* crtc
->fb
->pitch
+ x
* (crtc
->fb
->bits_per_pixel
/ 8);
1319 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start
, Offset
, x
, y
);
1320 I915_WRITE(dspstride
, crtc
->fb
->pitch
);
1321 if (IS_I965G(dev
)) {
1322 I915_WRITE(dspbase
, Offset
);
1324 I915_WRITE(dspsurf
, Start
);
1326 I915_WRITE(dsptileoff
, (y
<< 16) | x
);
1328 I915_WRITE(dspbase
, Start
+ Offset
);
1332 if ((IS_I965G(dev
) || plane
== 0))
1333 intel_update_fbc(crtc
, &crtc
->mode
);
1335 intel_wait_for_vblank(dev
);
1338 intel_fb
= to_intel_framebuffer(old_fb
);
1339 obj_priv
= intel_fb
->obj
->driver_private
;
1340 i915_gem_object_unpin(intel_fb
->obj
);
1342 intel_increase_pllclock(crtc
, true);
1344 mutex_unlock(&dev
->struct_mutex
);
1346 if (!dev
->primary
->master
)
1349 master_priv
= dev
->primary
->master
->driver_priv
;
1350 if (!master_priv
->sarea_priv
)
1354 master_priv
->sarea_priv
->pipeB_x
= x
;
1355 master_priv
->sarea_priv
->pipeB_y
= y
;
1357 master_priv
->sarea_priv
->pipeA_x
= x
;
1358 master_priv
->sarea_priv
->pipeA_y
= y
;
1364 /* Disable the VGA plane that we never use */
1365 static void i915_disable_vga (struct drm_device
*dev
)
1367 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1372 vga_reg
= CPU_VGACNTRL
;
1376 if (I915_READ(vga_reg
) & VGA_DISP_DISABLE
)
1379 I915_WRITE8(VGA_SR_INDEX
, 1);
1380 sr1
= I915_READ8(VGA_SR_DATA
);
1381 I915_WRITE8(VGA_SR_DATA
, sr1
| (1 << 5));
1384 I915_WRITE(vga_reg
, VGA_DISP_DISABLE
);
1387 static void igdng_disable_pll_edp (struct drm_crtc
*crtc
)
1389 struct drm_device
*dev
= crtc
->dev
;
1390 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1393 DRM_DEBUG_KMS("\n");
1394 dpa_ctl
= I915_READ(DP_A
);
1395 dpa_ctl
&= ~DP_PLL_ENABLE
;
1396 I915_WRITE(DP_A
, dpa_ctl
);
1399 static void igdng_enable_pll_edp (struct drm_crtc
*crtc
)
1401 struct drm_device
*dev
= crtc
->dev
;
1402 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1405 dpa_ctl
= I915_READ(DP_A
);
1406 dpa_ctl
|= DP_PLL_ENABLE
;
1407 I915_WRITE(DP_A
, dpa_ctl
);
1412 static void igdng_set_pll_edp (struct drm_crtc
*crtc
, int clock
)
1414 struct drm_device
*dev
= crtc
->dev
;
1415 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1418 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock
);
1419 dpa_ctl
= I915_READ(DP_A
);
1420 dpa_ctl
&= ~DP_PLL_FREQ_MASK
;
1422 if (clock
< 200000) {
1424 dpa_ctl
|= DP_PLL_FREQ_160MHZ
;
1425 /* workaround for 160Mhz:
1426 1) program 0x4600c bits 15:0 = 0x8124
1427 2) program 0x46010 bit 0 = 1
1428 3) program 0x46034 bit 24 = 1
1429 4) program 0x64000 bit 14 = 1
1431 temp
= I915_READ(0x4600c);
1433 I915_WRITE(0x4600c, temp
| 0x8124);
1435 temp
= I915_READ(0x46010);
1436 I915_WRITE(0x46010, temp
| 1);
1438 temp
= I915_READ(0x46034);
1439 I915_WRITE(0x46034, temp
| (1 << 24));
1441 dpa_ctl
|= DP_PLL_FREQ_270MHZ
;
1443 I915_WRITE(DP_A
, dpa_ctl
);
1448 static void igdng_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1450 struct drm_device
*dev
= crtc
->dev
;
1451 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1452 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1453 int pipe
= intel_crtc
->pipe
;
1454 int plane
= intel_crtc
->plane
;
1455 int pch_dpll_reg
= (pipe
== 0) ? PCH_DPLL_A
: PCH_DPLL_B
;
1456 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
1457 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1458 int dspbase_reg
= (plane
== 0) ? DSPAADDR
: DSPBADDR
;
1459 int fdi_tx_reg
= (pipe
== 0) ? FDI_TXA_CTL
: FDI_TXB_CTL
;
1460 int fdi_rx_reg
= (pipe
== 0) ? FDI_RXA_CTL
: FDI_RXB_CTL
;
1461 int fdi_rx_iir_reg
= (pipe
== 0) ? FDI_RXA_IIR
: FDI_RXB_IIR
;
1462 int fdi_rx_imr_reg
= (pipe
== 0) ? FDI_RXA_IMR
: FDI_RXB_IMR
;
1463 int transconf_reg
= (pipe
== 0) ? TRANSACONF
: TRANSBCONF
;
1464 int pf_ctl_reg
= (pipe
== 0) ? PFA_CTL_1
: PFB_CTL_1
;
1465 int pf_win_size
= (pipe
== 0) ? PFA_WIN_SZ
: PFB_WIN_SZ
;
1466 int pf_win_pos
= (pipe
== 0) ? PFA_WIN_POS
: PFB_WIN_POS
;
1467 int cpu_htot_reg
= (pipe
== 0) ? HTOTAL_A
: HTOTAL_B
;
1468 int cpu_hblank_reg
= (pipe
== 0) ? HBLANK_A
: HBLANK_B
;
1469 int cpu_hsync_reg
= (pipe
== 0) ? HSYNC_A
: HSYNC_B
;
1470 int cpu_vtot_reg
= (pipe
== 0) ? VTOTAL_A
: VTOTAL_B
;
1471 int cpu_vblank_reg
= (pipe
== 0) ? VBLANK_A
: VBLANK_B
;
1472 int cpu_vsync_reg
= (pipe
== 0) ? VSYNC_A
: VSYNC_B
;
1473 int trans_htot_reg
= (pipe
== 0) ? TRANS_HTOTAL_A
: TRANS_HTOTAL_B
;
1474 int trans_hblank_reg
= (pipe
== 0) ? TRANS_HBLANK_A
: TRANS_HBLANK_B
;
1475 int trans_hsync_reg
= (pipe
== 0) ? TRANS_HSYNC_A
: TRANS_HSYNC_B
;
1476 int trans_vtot_reg
= (pipe
== 0) ? TRANS_VTOTAL_A
: TRANS_VTOTAL_B
;
1477 int trans_vblank_reg
= (pipe
== 0) ? TRANS_VBLANK_A
: TRANS_VBLANK_B
;
1478 int trans_vsync_reg
= (pipe
== 0) ? TRANS_VSYNC_A
: TRANS_VSYNC_B
;
1480 int tries
= 5, j
, n
;
1482 /* XXX: When our outputs are all unaware of DPMS modes other than off
1483 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1486 case DRM_MODE_DPMS_ON
:
1487 case DRM_MODE_DPMS_STANDBY
:
1488 case DRM_MODE_DPMS_SUSPEND
:
1489 DRM_DEBUG_KMS("crtc %d dpms on\n", pipe
);
1491 /* enable eDP PLL */
1492 igdng_enable_pll_edp(crtc
);
1494 /* enable PCH DPLL */
1495 temp
= I915_READ(pch_dpll_reg
);
1496 if ((temp
& DPLL_VCO_ENABLE
) == 0) {
1497 I915_WRITE(pch_dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1498 I915_READ(pch_dpll_reg
);
1501 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
1502 temp
= I915_READ(fdi_rx_reg
);
1503 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_PLL_ENABLE
|
1505 FDI_DP_PORT_WIDTH_X4
); /* default 4 lanes */
1506 I915_READ(fdi_rx_reg
);
1509 /* Enable CPU FDI TX PLL, always on for IGDNG */
1510 temp
= I915_READ(fdi_tx_reg
);
1511 if ((temp
& FDI_TX_PLL_ENABLE
) == 0) {
1512 I915_WRITE(fdi_tx_reg
, temp
| FDI_TX_PLL_ENABLE
);
1513 I915_READ(fdi_tx_reg
);
1518 /* Enable panel fitting for LVDS */
1519 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
1520 temp
= I915_READ(pf_ctl_reg
);
1521 I915_WRITE(pf_ctl_reg
, temp
| PF_ENABLE
| PF_FILTER_MED_3x3
);
1523 /* currently full aspect */
1524 I915_WRITE(pf_win_pos
, 0);
1526 I915_WRITE(pf_win_size
,
1527 (dev_priv
->panel_fixed_mode
->hdisplay
<< 16) |
1528 (dev_priv
->panel_fixed_mode
->vdisplay
));
1531 /* Enable CPU pipe */
1532 temp
= I915_READ(pipeconf_reg
);
1533 if ((temp
& PIPEACONF_ENABLE
) == 0) {
1534 I915_WRITE(pipeconf_reg
, temp
| PIPEACONF_ENABLE
);
1535 I915_READ(pipeconf_reg
);
1539 /* configure and enable CPU plane */
1540 temp
= I915_READ(dspcntr_reg
);
1541 if ((temp
& DISPLAY_PLANE_ENABLE
) == 0) {
1542 I915_WRITE(dspcntr_reg
, temp
| DISPLAY_PLANE_ENABLE
);
1543 /* Flush the plane changes */
1544 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1548 /* enable CPU FDI TX and PCH FDI RX */
1549 temp
= I915_READ(fdi_tx_reg
);
1550 temp
|= FDI_TX_ENABLE
;
1551 temp
|= FDI_DP_PORT_WIDTH_X4
; /* default */
1552 temp
&= ~FDI_LINK_TRAIN_NONE
;
1553 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1554 I915_WRITE(fdi_tx_reg
, temp
);
1555 I915_READ(fdi_tx_reg
);
1557 temp
= I915_READ(fdi_rx_reg
);
1558 temp
&= ~FDI_LINK_TRAIN_NONE
;
1559 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1560 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_ENABLE
);
1561 I915_READ(fdi_rx_reg
);
1566 /* umask FDI RX Interrupt symbol_lock and bit_lock bit
1568 temp
= I915_READ(fdi_rx_imr_reg
);
1569 temp
&= ~FDI_RX_SYMBOL_LOCK
;
1570 temp
&= ~FDI_RX_BIT_LOCK
;
1571 I915_WRITE(fdi_rx_imr_reg
, temp
);
1572 I915_READ(fdi_rx_imr_reg
);
1575 temp
= I915_READ(fdi_rx_iir_reg
);
1576 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp
);
1578 if ((temp
& FDI_RX_BIT_LOCK
) == 0) {
1579 for (j
= 0; j
< tries
; j
++) {
1580 temp
= I915_READ(fdi_rx_iir_reg
);
1581 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
1583 if (temp
& FDI_RX_BIT_LOCK
)
1588 I915_WRITE(fdi_rx_iir_reg
,
1589 temp
| FDI_RX_BIT_LOCK
);
1591 DRM_DEBUG_KMS("train 1 fail\n");
1593 I915_WRITE(fdi_rx_iir_reg
,
1594 temp
| FDI_RX_BIT_LOCK
);
1595 DRM_DEBUG_KMS("train 1 ok 2!\n");
1597 temp
= I915_READ(fdi_tx_reg
);
1598 temp
&= ~FDI_LINK_TRAIN_NONE
;
1599 temp
|= FDI_LINK_TRAIN_PATTERN_2
;
1600 I915_WRITE(fdi_tx_reg
, temp
);
1602 temp
= I915_READ(fdi_rx_reg
);
1603 temp
&= ~FDI_LINK_TRAIN_NONE
;
1604 temp
|= FDI_LINK_TRAIN_PATTERN_2
;
1605 I915_WRITE(fdi_rx_reg
, temp
);
1609 temp
= I915_READ(fdi_rx_iir_reg
);
1610 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp
);
1612 if ((temp
& FDI_RX_SYMBOL_LOCK
) == 0) {
1613 for (j
= 0; j
< tries
; j
++) {
1614 temp
= I915_READ(fdi_rx_iir_reg
);
1615 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
1617 if (temp
& FDI_RX_SYMBOL_LOCK
)
1622 I915_WRITE(fdi_rx_iir_reg
,
1623 temp
| FDI_RX_SYMBOL_LOCK
);
1624 DRM_DEBUG_KMS("train 2 ok 1!\n");
1626 DRM_DEBUG_KMS("train 2 fail\n");
1628 I915_WRITE(fdi_rx_iir_reg
,
1629 temp
| FDI_RX_SYMBOL_LOCK
);
1630 DRM_DEBUG_KMS("train 2 ok 2!\n");
1632 DRM_DEBUG_KMS("train done\n");
1634 /* set transcoder timing */
1635 I915_WRITE(trans_htot_reg
, I915_READ(cpu_htot_reg
));
1636 I915_WRITE(trans_hblank_reg
, I915_READ(cpu_hblank_reg
));
1637 I915_WRITE(trans_hsync_reg
, I915_READ(cpu_hsync_reg
));
1639 I915_WRITE(trans_vtot_reg
, I915_READ(cpu_vtot_reg
));
1640 I915_WRITE(trans_vblank_reg
, I915_READ(cpu_vblank_reg
));
1641 I915_WRITE(trans_vsync_reg
, I915_READ(cpu_vsync_reg
));
1643 /* enable PCH transcoder */
1644 temp
= I915_READ(transconf_reg
);
1645 I915_WRITE(transconf_reg
, temp
| TRANS_ENABLE
);
1646 I915_READ(transconf_reg
);
1648 while ((I915_READ(transconf_reg
) & TRANS_STATE_ENABLE
) == 0)
1653 temp
= I915_READ(fdi_tx_reg
);
1654 temp
&= ~FDI_LINK_TRAIN_NONE
;
1655 I915_WRITE(fdi_tx_reg
, temp
| FDI_LINK_TRAIN_NONE
|
1656 FDI_TX_ENHANCE_FRAME_ENABLE
);
1657 I915_READ(fdi_tx_reg
);
1659 temp
= I915_READ(fdi_rx_reg
);
1660 temp
&= ~FDI_LINK_TRAIN_NONE
;
1661 I915_WRITE(fdi_rx_reg
, temp
| FDI_LINK_TRAIN_NONE
|
1662 FDI_RX_ENHANCE_FRAME_ENABLE
);
1663 I915_READ(fdi_rx_reg
);
1665 /* wait one idle pattern time */
1670 intel_crtc_load_lut(crtc
);
1673 case DRM_MODE_DPMS_OFF
:
1674 DRM_DEBUG_KMS("crtc %d dpms off\n", pipe
);
1676 i915_disable_vga(dev
);
1678 /* Disable display plane */
1679 temp
= I915_READ(dspcntr_reg
);
1680 if ((temp
& DISPLAY_PLANE_ENABLE
) != 0) {
1681 I915_WRITE(dspcntr_reg
, temp
& ~DISPLAY_PLANE_ENABLE
);
1682 /* Flush the plane changes */
1683 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1684 I915_READ(dspbase_reg
);
1687 /* disable cpu pipe, disable after all planes disabled */
1688 temp
= I915_READ(pipeconf_reg
);
1689 if ((temp
& PIPEACONF_ENABLE
) != 0) {
1690 I915_WRITE(pipeconf_reg
, temp
& ~PIPEACONF_ENABLE
);
1691 I915_READ(pipeconf_reg
);
1693 /* wait for cpu pipe off, pipe state */
1694 while ((I915_READ(pipeconf_reg
) & I965_PIPECONF_ACTIVE
) != 0) {
1700 DRM_DEBUG_KMS("pipe %d off delay\n",
1706 DRM_DEBUG_KMS("crtc %d is disabled\n", pipe
);
1709 igdng_disable_pll_edp(crtc
);
1712 /* disable CPU FDI tx and PCH FDI rx */
1713 temp
= I915_READ(fdi_tx_reg
);
1714 I915_WRITE(fdi_tx_reg
, temp
& ~FDI_TX_ENABLE
);
1715 I915_READ(fdi_tx_reg
);
1717 temp
= I915_READ(fdi_rx_reg
);
1718 I915_WRITE(fdi_rx_reg
, temp
& ~FDI_RX_ENABLE
);
1719 I915_READ(fdi_rx_reg
);
1723 /* still set train pattern 1 */
1724 temp
= I915_READ(fdi_tx_reg
);
1725 temp
&= ~FDI_LINK_TRAIN_NONE
;
1726 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1727 I915_WRITE(fdi_tx_reg
, temp
);
1729 temp
= I915_READ(fdi_rx_reg
);
1730 temp
&= ~FDI_LINK_TRAIN_NONE
;
1731 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1732 I915_WRITE(fdi_rx_reg
, temp
);
1736 /* disable PCH transcoder */
1737 temp
= I915_READ(transconf_reg
);
1738 if ((temp
& TRANS_ENABLE
) != 0) {
1739 I915_WRITE(transconf_reg
, temp
& ~TRANS_ENABLE
);
1740 I915_READ(transconf_reg
);
1742 /* wait for PCH transcoder off, transcoder state */
1743 while ((I915_READ(transconf_reg
) & TRANS_STATE_ENABLE
) != 0) {
1749 DRM_DEBUG_KMS("transcoder %d off "
1756 /* disable PCH DPLL */
1757 temp
= I915_READ(pch_dpll_reg
);
1758 if ((temp
& DPLL_VCO_ENABLE
) != 0) {
1759 I915_WRITE(pch_dpll_reg
, temp
& ~DPLL_VCO_ENABLE
);
1760 I915_READ(pch_dpll_reg
);
1763 temp
= I915_READ(fdi_rx_reg
);
1764 if ((temp
& FDI_RX_PLL_ENABLE
) != 0) {
1765 temp
&= ~FDI_SEL_PCDCLK
;
1766 temp
&= ~FDI_RX_PLL_ENABLE
;
1767 I915_WRITE(fdi_rx_reg
, temp
);
1768 I915_READ(fdi_rx_reg
);
1771 /* Disable CPU FDI TX PLL */
1772 temp
= I915_READ(fdi_tx_reg
);
1773 if ((temp
& FDI_TX_PLL_ENABLE
) != 0) {
1774 I915_WRITE(fdi_tx_reg
, temp
& ~FDI_TX_PLL_ENABLE
);
1775 I915_READ(fdi_tx_reg
);
1780 temp
= I915_READ(pf_ctl_reg
);
1781 if ((temp
& PF_ENABLE
) != 0) {
1782 I915_WRITE(pf_ctl_reg
, temp
& ~PF_ENABLE
);
1783 I915_READ(pf_ctl_reg
);
1785 I915_WRITE(pf_win_size
, 0);
1787 /* Wait for the clocks to turn off. */
1793 static void intel_crtc_dpms_overlay(struct intel_crtc
*intel_crtc
, bool enable
)
1795 struct intel_overlay
*overlay
;
1798 if (!enable
&& intel_crtc
->overlay
) {
1799 overlay
= intel_crtc
->overlay
;
1800 mutex_lock(&overlay
->dev
->struct_mutex
);
1802 ret
= intel_overlay_switch_off(overlay
);
1806 ret
= intel_overlay_recover_from_interrupt(overlay
, 0);
1808 /* overlay doesn't react anymore. Usually
1809 * results in a black screen and an unkillable
1812 overlay
->hw_wedged
= HW_WEDGED
;
1816 mutex_unlock(&overlay
->dev
->struct_mutex
);
1818 /* Let userspace switch the overlay on again. In most cases userspace
1819 * has to recompute where to put it anyway. */
1824 static void i9xx_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1826 struct drm_device
*dev
= crtc
->dev
;
1827 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1828 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1829 int pipe
= intel_crtc
->pipe
;
1830 int plane
= intel_crtc
->plane
;
1831 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
1832 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1833 int dspbase_reg
= (plane
== 0) ? DSPAADDR
: DSPBADDR
;
1834 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
1837 /* XXX: When our outputs are all unaware of DPMS modes other than off
1838 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1841 case DRM_MODE_DPMS_ON
:
1842 case DRM_MODE_DPMS_STANDBY
:
1843 case DRM_MODE_DPMS_SUSPEND
:
1844 intel_update_watermarks(dev
);
1846 /* Enable the DPLL */
1847 temp
= I915_READ(dpll_reg
);
1848 if ((temp
& DPLL_VCO_ENABLE
) == 0) {
1849 I915_WRITE(dpll_reg
, temp
);
1850 I915_READ(dpll_reg
);
1851 /* Wait for the clocks to stabilize. */
1853 I915_WRITE(dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1854 I915_READ(dpll_reg
);
1855 /* Wait for the clocks to stabilize. */
1857 I915_WRITE(dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1858 I915_READ(dpll_reg
);
1859 /* Wait for the clocks to stabilize. */
1863 /* Enable the pipe */
1864 temp
= I915_READ(pipeconf_reg
);
1865 if ((temp
& PIPEACONF_ENABLE
) == 0)
1866 I915_WRITE(pipeconf_reg
, temp
| PIPEACONF_ENABLE
);
1868 /* Enable the plane */
1869 temp
= I915_READ(dspcntr_reg
);
1870 if ((temp
& DISPLAY_PLANE_ENABLE
) == 0) {
1871 I915_WRITE(dspcntr_reg
, temp
| DISPLAY_PLANE_ENABLE
);
1872 /* Flush the plane changes */
1873 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1876 intel_crtc_load_lut(crtc
);
1878 if ((IS_I965G(dev
) || plane
== 0))
1879 intel_update_fbc(crtc
, &crtc
->mode
);
1881 /* Give the overlay scaler a chance to enable if it's on this pipe */
1882 intel_crtc_dpms_overlay(intel_crtc
, true);
1884 case DRM_MODE_DPMS_OFF
:
1885 intel_update_watermarks(dev
);
1887 /* Give the overlay scaler a chance to disable if it's on this pipe */
1888 intel_crtc_dpms_overlay(intel_crtc
, false);
1890 if (dev_priv
->cfb_plane
== plane
&&
1891 dev_priv
->display
.disable_fbc
)
1892 dev_priv
->display
.disable_fbc(dev
);
1894 /* Disable the VGA plane that we never use */
1895 i915_disable_vga(dev
);
1897 /* Disable display plane */
1898 temp
= I915_READ(dspcntr_reg
);
1899 if ((temp
& DISPLAY_PLANE_ENABLE
) != 0) {
1900 I915_WRITE(dspcntr_reg
, temp
& ~DISPLAY_PLANE_ENABLE
);
1901 /* Flush the plane changes */
1902 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1903 I915_READ(dspbase_reg
);
1906 if (!IS_I9XX(dev
)) {
1907 /* Wait for vblank for the disable to take effect */
1908 intel_wait_for_vblank(dev
);
1911 /* Next, disable display pipes */
1912 temp
= I915_READ(pipeconf_reg
);
1913 if ((temp
& PIPEACONF_ENABLE
) != 0) {
1914 I915_WRITE(pipeconf_reg
, temp
& ~PIPEACONF_ENABLE
);
1915 I915_READ(pipeconf_reg
);
1918 /* Wait for vblank for the disable to take effect. */
1919 intel_wait_for_vblank(dev
);
1921 temp
= I915_READ(dpll_reg
);
1922 if ((temp
& DPLL_VCO_ENABLE
) != 0) {
1923 I915_WRITE(dpll_reg
, temp
& ~DPLL_VCO_ENABLE
);
1924 I915_READ(dpll_reg
);
1927 /* Wait for the clocks to turn off. */
1934 * Sets the power management mode of the pipe and plane.
1936 * This code should probably grow support for turning the cursor off and back
1937 * on appropriately at the same time as we're turning the pipe off/on.
1939 static void intel_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1941 struct drm_device
*dev
= crtc
->dev
;
1942 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1943 struct drm_i915_master_private
*master_priv
;
1944 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1945 int pipe
= intel_crtc
->pipe
;
1948 dev_priv
->display
.dpms(crtc
, mode
);
1950 intel_crtc
->dpms_mode
= mode
;
1952 if (!dev
->primary
->master
)
1955 master_priv
= dev
->primary
->master
->driver_priv
;
1956 if (!master_priv
->sarea_priv
)
1959 enabled
= crtc
->enabled
&& mode
!= DRM_MODE_DPMS_OFF
;
1963 master_priv
->sarea_priv
->pipeA_w
= enabled
? crtc
->mode
.hdisplay
: 0;
1964 master_priv
->sarea_priv
->pipeA_h
= enabled
? crtc
->mode
.vdisplay
: 0;
1967 master_priv
->sarea_priv
->pipeB_w
= enabled
? crtc
->mode
.hdisplay
: 0;
1968 master_priv
->sarea_priv
->pipeB_h
= enabled
? crtc
->mode
.vdisplay
: 0;
1971 DRM_ERROR("Can't update pipe %d in SAREA\n", pipe
);
1976 static void intel_crtc_prepare (struct drm_crtc
*crtc
)
1978 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
1979 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_OFF
);
1982 static void intel_crtc_commit (struct drm_crtc
*crtc
)
1984 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
1985 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
1988 void intel_encoder_prepare (struct drm_encoder
*encoder
)
1990 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
1991 /* lvds has its own version of prepare see intel_lvds_prepare */
1992 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_OFF
);
1995 void intel_encoder_commit (struct drm_encoder
*encoder
)
1997 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
1998 /* lvds has its own version of commit see intel_lvds_commit */
1999 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_ON
);
2002 static bool intel_crtc_mode_fixup(struct drm_crtc
*crtc
,
2003 struct drm_display_mode
*mode
,
2004 struct drm_display_mode
*adjusted_mode
)
2006 struct drm_device
*dev
= crtc
->dev
;
2007 if (IS_IGDNG(dev
)) {
2008 /* FDI link clock is fixed at 2.7G */
2009 if (mode
->clock
* 3 > 27000 * 4)
2010 return MODE_CLOCK_HIGH
;
2015 static int i945_get_display_clock_speed(struct drm_device
*dev
)
2020 static int i915_get_display_clock_speed(struct drm_device
*dev
)
2025 static int i9xx_misc_get_display_clock_speed(struct drm_device
*dev
)
2030 static int i915gm_get_display_clock_speed(struct drm_device
*dev
)
2034 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
2036 if (gcfgc
& GC_LOW_FREQUENCY_ENABLE
)
2039 switch (gcfgc
& GC_DISPLAY_CLOCK_MASK
) {
2040 case GC_DISPLAY_CLOCK_333_MHZ
:
2043 case GC_DISPLAY_CLOCK_190_200_MHZ
:
2049 static int i865_get_display_clock_speed(struct drm_device
*dev
)
2054 static int i855_get_display_clock_speed(struct drm_device
*dev
)
2057 /* Assume that the hardware is in the high speed state. This
2058 * should be the default.
2060 switch (hpllcc
& GC_CLOCK_CONTROL_MASK
) {
2061 case GC_CLOCK_133_200
:
2062 case GC_CLOCK_100_200
:
2064 case GC_CLOCK_166_250
:
2066 case GC_CLOCK_100_133
:
2070 /* Shouldn't happen */
2074 static int i830_get_display_clock_speed(struct drm_device
*dev
)
2080 * Return the pipe currently connected to the panel fitter,
2081 * or -1 if the panel fitter is not present or not in use
2083 int intel_panel_fitter_pipe (struct drm_device
*dev
)
2085 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2088 /* i830 doesn't have a panel fitter */
2092 pfit_control
= I915_READ(PFIT_CONTROL
);
2094 /* See if the panel fitter is in use */
2095 if ((pfit_control
& PFIT_ENABLE
) == 0)
2098 /* 965 can place panel fitter on either pipe */
2100 return (pfit_control
>> 29) & 0x3;
2102 /* older chips can only use pipe 1 */
2115 fdi_reduce_ratio(u32
*num
, u32
*den
)
2117 while (*num
> 0xffffff || *den
> 0xffffff) {
2123 #define DATA_N 0x800000
2124 #define LINK_N 0x80000
2127 igdng_compute_m_n(int bits_per_pixel
, int nlanes
,
2128 int pixel_clock
, int link_clock
,
2129 struct fdi_m_n
*m_n
)
2133 m_n
->tu
= 64; /* default size */
2135 temp
= (u64
) DATA_N
* pixel_clock
;
2136 temp
= div_u64(temp
, link_clock
);
2137 m_n
->gmch_m
= div_u64(temp
* bits_per_pixel
, nlanes
);
2138 m_n
->gmch_m
>>= 3; /* convert to bytes_per_pixel */
2139 m_n
->gmch_n
= DATA_N
;
2140 fdi_reduce_ratio(&m_n
->gmch_m
, &m_n
->gmch_n
);
2142 temp
= (u64
) LINK_N
* pixel_clock
;
2143 m_n
->link_m
= div_u64(temp
, link_clock
);
2144 m_n
->link_n
= LINK_N
;
2145 fdi_reduce_ratio(&m_n
->link_m
, &m_n
->link_n
);
2149 struct intel_watermark_params
{
2150 unsigned long fifo_size
;
2151 unsigned long max_wm
;
2152 unsigned long default_wm
;
2153 unsigned long guard_size
;
2154 unsigned long cacheline_size
;
2157 /* IGD has different values for various configs */
2158 static struct intel_watermark_params igd_display_wm
= {
2165 static struct intel_watermark_params igd_display_hplloff_wm
= {
2172 static struct intel_watermark_params igd_cursor_wm
= {
2176 IGD_CURSOR_GUARD_WM
,
2179 static struct intel_watermark_params igd_cursor_hplloff_wm
= {
2183 IGD_CURSOR_GUARD_WM
,
2186 static struct intel_watermark_params g4x_wm_info
= {
2193 static struct intel_watermark_params i945_wm_info
= {
2200 static struct intel_watermark_params i915_wm_info
= {
2207 static struct intel_watermark_params i855_wm_info
= {
2214 static struct intel_watermark_params i830_wm_info
= {
2223 * intel_calculate_wm - calculate watermark level
2224 * @clock_in_khz: pixel clock
2225 * @wm: chip FIFO params
2226 * @pixel_size: display pixel size
2227 * @latency_ns: memory latency for the platform
2229 * Calculate the watermark level (the level at which the display plane will
2230 * start fetching from memory again). Each chip has a different display
2231 * FIFO size and allocation, so the caller needs to figure that out and pass
2232 * in the correct intel_watermark_params structure.
2234 * As the pixel clock runs, the FIFO will be drained at a rate that depends
2235 * on the pixel size. When it reaches the watermark level, it'll start
2236 * fetching FIFO line sized based chunks from memory until the FIFO fills
2237 * past the watermark point. If the FIFO drains completely, a FIFO underrun
2238 * will occur, and a display engine hang could result.
2240 static unsigned long intel_calculate_wm(unsigned long clock_in_khz
,
2241 struct intel_watermark_params
*wm
,
2243 unsigned long latency_ns
)
2245 long entries_required
, wm_size
;
2248 * Note: we need to make sure we don't overflow for various clock &
2250 * clocks go from a few thousand to several hundred thousand.
2251 * latency is usually a few thousand
2253 entries_required
= ((clock_in_khz
/ 1000) * pixel_size
* latency_ns
) /
2255 entries_required
/= wm
->cacheline_size
;
2257 DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required
);
2259 wm_size
= wm
->fifo_size
- (entries_required
+ wm
->guard_size
);
2261 DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size
);
2263 /* Don't promote wm_size to unsigned... */
2264 if (wm_size
> (long)wm
->max_wm
)
2265 wm_size
= wm
->max_wm
;
2267 wm_size
= wm
->default_wm
;
2271 struct cxsr_latency
{
2273 unsigned long fsb_freq
;
2274 unsigned long mem_freq
;
2275 unsigned long display_sr
;
2276 unsigned long display_hpll_disable
;
2277 unsigned long cursor_sr
;
2278 unsigned long cursor_hpll_disable
;
2281 static struct cxsr_latency cxsr_latency_table
[] = {
2282 {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
2283 {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
2284 {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
2286 {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
2287 {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
2288 {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
2290 {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
2291 {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
2292 {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
2294 {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
2295 {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
2296 {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
2298 {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
2299 {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
2300 {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
2302 {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
2303 {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
2304 {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
2307 static struct cxsr_latency
*intel_get_cxsr_latency(int is_desktop
, int fsb
,
2311 struct cxsr_latency
*latency
;
2313 if (fsb
== 0 || mem
== 0)
2316 for (i
= 0; i
< ARRAY_SIZE(cxsr_latency_table
); i
++) {
2317 latency
= &cxsr_latency_table
[i
];
2318 if (is_desktop
== latency
->is_desktop
&&
2319 fsb
== latency
->fsb_freq
&& mem
== latency
->mem_freq
)
2323 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2328 static void igd_disable_cxsr(struct drm_device
*dev
)
2330 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2333 /* deactivate cxsr */
2334 reg
= I915_READ(DSPFW3
);
2335 reg
&= ~(IGD_SELF_REFRESH_EN
);
2336 I915_WRITE(DSPFW3
, reg
);
2337 DRM_INFO("Big FIFO is disabled\n");
2340 static void igd_enable_cxsr(struct drm_device
*dev
, unsigned long clock
,
2343 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2346 struct cxsr_latency
*latency
;
2348 latency
= intel_get_cxsr_latency(IS_IGDG(dev
), dev_priv
->fsb_freq
,
2349 dev_priv
->mem_freq
);
2351 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2352 igd_disable_cxsr(dev
);
2357 wm
= intel_calculate_wm(clock
, &igd_display_wm
, pixel_size
,
2358 latency
->display_sr
);
2359 reg
= I915_READ(DSPFW1
);
2362 I915_WRITE(DSPFW1
, reg
);
2363 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg
);
2366 wm
= intel_calculate_wm(clock
, &igd_cursor_wm
, pixel_size
,
2367 latency
->cursor_sr
);
2368 reg
= I915_READ(DSPFW3
);
2369 reg
&= ~(0x3f << 24);
2370 reg
|= (wm
& 0x3f) << 24;
2371 I915_WRITE(DSPFW3
, reg
);
2373 /* Display HPLL off SR */
2374 wm
= intel_calculate_wm(clock
, &igd_display_hplloff_wm
,
2375 latency
->display_hpll_disable
, I915_FIFO_LINE_SIZE
);
2376 reg
= I915_READ(DSPFW3
);
2379 I915_WRITE(DSPFW3
, reg
);
2381 /* cursor HPLL off SR */
2382 wm
= intel_calculate_wm(clock
, &igd_cursor_hplloff_wm
, pixel_size
,
2383 latency
->cursor_hpll_disable
);
2384 reg
= I915_READ(DSPFW3
);
2385 reg
&= ~(0x3f << 16);
2386 reg
|= (wm
& 0x3f) << 16;
2387 I915_WRITE(DSPFW3
, reg
);
2388 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg
);
2391 reg
= I915_READ(DSPFW3
);
2392 reg
|= IGD_SELF_REFRESH_EN
;
2393 I915_WRITE(DSPFW3
, reg
);
2395 DRM_INFO("Big FIFO is enabled\n");
2401 * Latency for FIFO fetches is dependent on several factors:
2402 * - memory configuration (speed, channels)
2404 * - current MCH state
2405 * It can be fairly high in some situations, so here we assume a fairly
2406 * pessimal value. It's a tradeoff between extra memory fetches (if we
2407 * set this value too high, the FIFO will fetch frequently to stay full)
2408 * and power consumption (set it too low to save power and we might see
2409 * FIFO underruns and display "flicker").
2411 * A value of 5us seems to be a good balance; safe for very low end
2412 * platforms but not overly aggressive on lower latency configs.
2414 const static int latency_ns
= 5000;
2416 static int i9xx_get_fifo_size(struct drm_device
*dev
, int plane
)
2418 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2419 uint32_t dsparb
= I915_READ(DSPARB
);
2423 size
= dsparb
& 0x7f;
2425 size
= ((dsparb
>> DSPARB_CSTART_SHIFT
) & 0x7f) -
2428 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb
,
2429 plane
? "B" : "A", size
);
2434 static int i85x_get_fifo_size(struct drm_device
*dev
, int plane
)
2436 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2437 uint32_t dsparb
= I915_READ(DSPARB
);
2441 size
= dsparb
& 0x1ff;
2443 size
= ((dsparb
>> DSPARB_BEND_SHIFT
) & 0x1ff) -
2445 size
>>= 1; /* Convert to cachelines */
2447 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb
,
2448 plane
? "B" : "A", size
);
2453 static int i845_get_fifo_size(struct drm_device
*dev
, int plane
)
2455 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2456 uint32_t dsparb
= I915_READ(DSPARB
);
2459 size
= dsparb
& 0x7f;
2460 size
>>= 2; /* Convert to cachelines */
2462 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb
,
2469 static int i830_get_fifo_size(struct drm_device
*dev
, int plane
)
2471 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2472 uint32_t dsparb
= I915_READ(DSPARB
);
2475 size
= dsparb
& 0x7f;
2476 size
>>= 1; /* Convert to cachelines */
2478 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb
,
2479 plane
? "B" : "A", size
);
2484 static void g4x_update_wm(struct drm_device
*dev
, int planea_clock
,
2485 int planeb_clock
, int sr_hdisplay
, int pixel_size
)
2487 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2488 int total_size
, cacheline_size
;
2489 int planea_wm
, planeb_wm
, cursora_wm
, cursorb_wm
, cursor_sr
;
2490 struct intel_watermark_params planea_params
, planeb_params
;
2491 unsigned long line_time_us
;
2492 int sr_clock
, sr_entries
= 0, entries_required
;
2494 /* Create copies of the base settings for each pipe */
2495 planea_params
= planeb_params
= g4x_wm_info
;
2497 /* Grab a couple of global values before we overwrite them */
2498 total_size
= planea_params
.fifo_size
;
2499 cacheline_size
= planea_params
.cacheline_size
;
2502 * Note: we need to make sure we don't overflow for various clock &
2504 * clocks go from a few thousand to several hundred thousand.
2505 * latency is usually a few thousand
2507 entries_required
= ((planea_clock
/ 1000) * pixel_size
* latency_ns
) /
2509 entries_required
/= G4X_FIFO_LINE_SIZE
;
2510 planea_wm
= entries_required
+ planea_params
.guard_size
;
2512 entries_required
= ((planeb_clock
/ 1000) * pixel_size
* latency_ns
) /
2514 entries_required
/= G4X_FIFO_LINE_SIZE
;
2515 planeb_wm
= entries_required
+ planeb_params
.guard_size
;
2517 cursora_wm
= cursorb_wm
= 16;
2520 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm
, planeb_wm
);
2522 /* Calc sr entries for one plane configs */
2523 if (sr_hdisplay
&& (!planea_clock
|| !planeb_clock
)) {
2524 /* self-refresh has much higher latency */
2525 const static int sr_latency_ns
= 12000;
2527 sr_clock
= planea_clock
? planea_clock
: planeb_clock
;
2528 line_time_us
= ((sr_hdisplay
* 1000) / sr_clock
);
2530 /* Use ns/us then divide to preserve precision */
2531 sr_entries
= (((sr_latency_ns
/ line_time_us
) + 1) *
2532 pixel_size
* sr_hdisplay
) / 1000;
2533 sr_entries
= roundup(sr_entries
/ cacheline_size
, 1);
2534 DRM_DEBUG("self-refresh entries: %d\n", sr_entries
);
2535 I915_WRITE(FW_BLC_SELF
, FW_BLC_SELF_EN
);
2538 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
2539 planea_wm
, planeb_wm
, sr_entries
);
2544 I915_WRITE(DSPFW1
, (sr_entries
<< DSPFW_SR_SHIFT
) |
2545 (cursorb_wm
<< DSPFW_CURSORB_SHIFT
) |
2546 (planeb_wm
<< DSPFW_PLANEB_SHIFT
) | planea_wm
);
2547 I915_WRITE(DSPFW2
, (I915_READ(DSPFW2
) & DSPFW_CURSORA_MASK
) |
2548 (cursora_wm
<< DSPFW_CURSORA_SHIFT
));
2549 /* HPLL off in SR has some issues on G4x... disable it */
2550 I915_WRITE(DSPFW3
, (I915_READ(DSPFW3
) & ~DSPFW_HPLL_SR_EN
) |
2551 (cursor_sr
<< DSPFW_CURSOR_SR_SHIFT
));
2554 static void i965_update_wm(struct drm_device
*dev
, int planea_clock
,
2555 int planeb_clock
, int sr_hdisplay
, int pixel_size
)
2557 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2558 unsigned long line_time_us
;
2559 int sr_clock
, sr_entries
, srwm
= 1;
2561 /* Calc sr entries for one plane configs */
2562 if (sr_hdisplay
&& (!planea_clock
|| !planeb_clock
)) {
2563 /* self-refresh has much higher latency */
2564 const static int sr_latency_ns
= 12000;
2566 sr_clock
= planea_clock
? planea_clock
: planeb_clock
;
2567 line_time_us
= ((sr_hdisplay
* 1000) / sr_clock
);
2569 /* Use ns/us then divide to preserve precision */
2570 sr_entries
= (((sr_latency_ns
/ line_time_us
) + 1) *
2571 pixel_size
* sr_hdisplay
) / 1000;
2572 sr_entries
= roundup(sr_entries
/ I915_FIFO_LINE_SIZE
, 1);
2573 DRM_DEBUG("self-refresh entries: %d\n", sr_entries
);
2574 srwm
= I945_FIFO_SIZE
- sr_entries
;
2578 I915_WRITE(FW_BLC_SELF
, FW_BLC_SELF_EN
);
2581 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
2584 /* 965 has limitations... */
2585 I915_WRITE(DSPFW1
, (srwm
<< DSPFW_SR_SHIFT
) | (8 << 16) | (8 << 8) |
2587 I915_WRITE(DSPFW2
, (8 << 8) | (8 << 0));
2590 static void i9xx_update_wm(struct drm_device
*dev
, int planea_clock
,
2591 int planeb_clock
, int sr_hdisplay
, int pixel_size
)
2593 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2596 int total_size
, cacheline_size
, cwm
, srwm
= 1;
2597 int planea_wm
, planeb_wm
;
2598 struct intel_watermark_params planea_params
, planeb_params
;
2599 unsigned long line_time_us
;
2600 int sr_clock
, sr_entries
= 0;
2602 /* Create copies of the base settings for each pipe */
2603 if (IS_I965GM(dev
) || IS_I945GM(dev
))
2604 planea_params
= planeb_params
= i945_wm_info
;
2605 else if (IS_I9XX(dev
))
2606 planea_params
= planeb_params
= i915_wm_info
;
2608 planea_params
= planeb_params
= i855_wm_info
;
2610 /* Grab a couple of global values before we overwrite them */
2611 total_size
= planea_params
.fifo_size
;
2612 cacheline_size
= planea_params
.cacheline_size
;
2614 /* Update per-plane FIFO sizes */
2615 planea_params
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 0);
2616 planeb_params
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 1);
2618 planea_wm
= intel_calculate_wm(planea_clock
, &planea_params
,
2619 pixel_size
, latency_ns
);
2620 planeb_wm
= intel_calculate_wm(planeb_clock
, &planeb_params
,
2621 pixel_size
, latency_ns
);
2622 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm
, planeb_wm
);
2625 * Overlay gets an aggressive default since video jitter is bad.
2629 /* Calc sr entries for one plane configs */
2630 if (HAS_FW_BLC(dev
) && sr_hdisplay
&&
2631 (!planea_clock
|| !planeb_clock
)) {
2632 /* self-refresh has much higher latency */
2633 const static int sr_latency_ns
= 6000;
2635 sr_clock
= planea_clock
? planea_clock
: planeb_clock
;
2636 line_time_us
= ((sr_hdisplay
* 1000) / sr_clock
);
2638 /* Use ns/us then divide to preserve precision */
2639 sr_entries
= (((sr_latency_ns
/ line_time_us
) + 1) *
2640 pixel_size
* sr_hdisplay
) / 1000;
2641 sr_entries
= roundup(sr_entries
/ cacheline_size
, 1);
2642 DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries
);
2643 srwm
= total_size
- sr_entries
;
2646 I915_WRITE(FW_BLC_SELF
, FW_BLC_SELF_EN
| (srwm
& 0x3f));
2649 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
2650 planea_wm
, planeb_wm
, cwm
, srwm
);
2652 fwater_lo
= ((planeb_wm
& 0x3f) << 16) | (planea_wm
& 0x3f);
2653 fwater_hi
= (cwm
& 0x1f);
2655 /* Set request length to 8 cachelines per fetch */
2656 fwater_lo
= fwater_lo
| (1 << 24) | (1 << 8);
2657 fwater_hi
= fwater_hi
| (1 << 8);
2659 I915_WRITE(FW_BLC
, fwater_lo
);
2660 I915_WRITE(FW_BLC2
, fwater_hi
);
2663 static void i830_update_wm(struct drm_device
*dev
, int planea_clock
, int unused
,
2664 int unused2
, int pixel_size
)
2666 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2667 uint32_t fwater_lo
= I915_READ(FW_BLC
) & ~0xfff;
2670 i830_wm_info
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 0);
2672 planea_wm
= intel_calculate_wm(planea_clock
, &i830_wm_info
,
2673 pixel_size
, latency_ns
);
2674 fwater_lo
|= (3<<8) | planea_wm
;
2676 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm
);
2678 I915_WRITE(FW_BLC
, fwater_lo
);
2682 * intel_update_watermarks - update FIFO watermark values based on current modes
2684 * Calculate watermark values for the various WM regs based on current mode
2685 * and plane configuration.
2687 * There are several cases to deal with here:
2688 * - normal (i.e. non-self-refresh)
2689 * - self-refresh (SR) mode
2690 * - lines are large relative to FIFO size (buffer can hold up to 2)
2691 * - lines are small relative to FIFO size (buffer can hold more than 2
2692 * lines), so need to account for TLB latency
2694 * The normal calculation is:
2695 * watermark = dotclock * bytes per pixel * latency
2696 * where latency is platform & configuration dependent (we assume pessimal
2699 * The SR calculation is:
2700 * watermark = (trunc(latency/line time)+1) * surface width *
2703 * line time = htotal / dotclock
2704 * and latency is assumed to be high, as above.
2706 * The final value programmed to the register should always be rounded up,
2707 * and include an extra 2 entries to account for clock crossings.
2709 * We don't use the sprite, so we can ignore that. And on Crestline we have
2710 * to set the non-SR watermarks to 8.
2712 static void intel_update_watermarks(struct drm_device
*dev
)
2714 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2715 struct drm_crtc
*crtc
;
2716 struct intel_crtc
*intel_crtc
;
2717 int sr_hdisplay
= 0;
2718 unsigned long planea_clock
= 0, planeb_clock
= 0, sr_clock
= 0;
2719 int enabled
= 0, pixel_size
= 0;
2721 if (!dev_priv
->display
.update_wm
)
2724 /* Get the clock config from both planes */
2725 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
2726 intel_crtc
= to_intel_crtc(crtc
);
2727 if (crtc
->enabled
) {
2729 if (intel_crtc
->plane
== 0) {
2730 DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
2731 intel_crtc
->pipe
, crtc
->mode
.clock
);
2732 planea_clock
= crtc
->mode
.clock
;
2734 DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
2735 intel_crtc
->pipe
, crtc
->mode
.clock
);
2736 planeb_clock
= crtc
->mode
.clock
;
2738 sr_hdisplay
= crtc
->mode
.hdisplay
;
2739 sr_clock
= crtc
->mode
.clock
;
2741 pixel_size
= crtc
->fb
->bits_per_pixel
/ 8;
2743 pixel_size
= 4; /* by default */
2750 /* Single plane configs can enable self refresh */
2751 if (enabled
== 1 && IS_IGD(dev
))
2752 igd_enable_cxsr(dev
, sr_clock
, pixel_size
);
2753 else if (IS_IGD(dev
))
2754 igd_disable_cxsr(dev
);
2756 dev_priv
->display
.update_wm(dev
, planea_clock
, planeb_clock
,
2757 sr_hdisplay
, pixel_size
);
2760 static int intel_crtc_mode_set(struct drm_crtc
*crtc
,
2761 struct drm_display_mode
*mode
,
2762 struct drm_display_mode
*adjusted_mode
,
2764 struct drm_framebuffer
*old_fb
)
2766 struct drm_device
*dev
= crtc
->dev
;
2767 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2768 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
2769 int pipe
= intel_crtc
->pipe
;
2770 int plane
= intel_crtc
->plane
;
2771 int fp_reg
= (pipe
== 0) ? FPA0
: FPB0
;
2772 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
2773 int dpll_md_reg
= (intel_crtc
->pipe
== 0) ? DPLL_A_MD
: DPLL_B_MD
;
2774 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
2775 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
2776 int htot_reg
= (pipe
== 0) ? HTOTAL_A
: HTOTAL_B
;
2777 int hblank_reg
= (pipe
== 0) ? HBLANK_A
: HBLANK_B
;
2778 int hsync_reg
= (pipe
== 0) ? HSYNC_A
: HSYNC_B
;
2779 int vtot_reg
= (pipe
== 0) ? VTOTAL_A
: VTOTAL_B
;
2780 int vblank_reg
= (pipe
== 0) ? VBLANK_A
: VBLANK_B
;
2781 int vsync_reg
= (pipe
== 0) ? VSYNC_A
: VSYNC_B
;
2782 int dspsize_reg
= (plane
== 0) ? DSPASIZE
: DSPBSIZE
;
2783 int dsppos_reg
= (plane
== 0) ? DSPAPOS
: DSPBPOS
;
2784 int pipesrc_reg
= (pipe
== 0) ? PIPEASRC
: PIPEBSRC
;
2785 int refclk
, num_outputs
= 0;
2786 intel_clock_t clock
, reduced_clock
;
2787 u32 dpll
= 0, fp
= 0, fp2
= 0, dspcntr
, pipeconf
;
2788 bool ok
, has_reduced_clock
= false, is_sdvo
= false, is_dvo
= false;
2789 bool is_crt
= false, is_lvds
= false, is_tv
= false, is_dp
= false;
2790 bool is_edp
= false;
2791 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
2792 struct drm_connector
*connector
;
2793 const intel_limit_t
*limit
;
2795 struct fdi_m_n m_n
= {0};
2796 int data_m1_reg
= (pipe
== 0) ? PIPEA_DATA_M1
: PIPEB_DATA_M1
;
2797 int data_n1_reg
= (pipe
== 0) ? PIPEA_DATA_N1
: PIPEB_DATA_N1
;
2798 int link_m1_reg
= (pipe
== 0) ? PIPEA_LINK_M1
: PIPEB_LINK_M1
;
2799 int link_n1_reg
= (pipe
== 0) ? PIPEA_LINK_N1
: PIPEB_LINK_N1
;
2800 int pch_fp_reg
= (pipe
== 0) ? PCH_FPA0
: PCH_FPB0
;
2801 int pch_dpll_reg
= (pipe
== 0) ? PCH_DPLL_A
: PCH_DPLL_B
;
2802 int fdi_rx_reg
= (pipe
== 0) ? FDI_RXA_CTL
: FDI_RXB_CTL
;
2803 int lvds_reg
= LVDS
;
2805 int sdvo_pixel_multiply
;
2808 drm_vblank_pre_modeset(dev
, pipe
);
2810 list_for_each_entry(connector
, &mode_config
->connector_list
, head
) {
2811 struct intel_output
*intel_output
= to_intel_output(connector
);
2813 if (!connector
->encoder
|| connector
->encoder
->crtc
!= crtc
)
2816 switch (intel_output
->type
) {
2817 case INTEL_OUTPUT_LVDS
:
2820 case INTEL_OUTPUT_SDVO
:
2821 case INTEL_OUTPUT_HDMI
:
2823 if (intel_output
->needs_tv_clock
)
2826 case INTEL_OUTPUT_DVO
:
2829 case INTEL_OUTPUT_TVOUT
:
2832 case INTEL_OUTPUT_ANALOG
:
2835 case INTEL_OUTPUT_DISPLAYPORT
:
2838 case INTEL_OUTPUT_EDP
:
2846 if (is_lvds
&& dev_priv
->lvds_use_ssc
&& num_outputs
< 2) {
2847 refclk
= dev_priv
->lvds_ssc_freq
* 1000;
2848 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
2850 } else if (IS_I9XX(dev
)) {
2853 refclk
= 120000; /* 120Mhz refclk */
2860 * Returns a set of divisors for the desired target clock with the given
2861 * refclk, or FALSE. The returned values represent the clock equation:
2862 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
2864 limit
= intel_limit(crtc
);
2865 ok
= limit
->find_pll(limit
, crtc
, adjusted_mode
->clock
, refclk
, &clock
);
2867 DRM_ERROR("Couldn't find PLL settings for mode!\n");
2868 drm_vblank_post_modeset(dev
, pipe
);
2872 if (limit
->find_reduced_pll
&& dev_priv
->lvds_downclock_avail
) {
2873 memcpy(&reduced_clock
, &clock
, sizeof(intel_clock_t
));
2874 has_reduced_clock
= limit
->find_reduced_pll(limit
, crtc
,
2875 (adjusted_mode
->clock
*3/4),
2880 /* SDVO TV has fixed PLL values depend on its clock range,
2881 this mirrors vbios setting. */
2882 if (is_sdvo
&& is_tv
) {
2883 if (adjusted_mode
->clock
>= 100000
2884 && adjusted_mode
->clock
< 140500) {
2890 } else if (adjusted_mode
->clock
>= 140500
2891 && adjusted_mode
->clock
<= 200000) {
2901 if (IS_IGDNG(dev
)) {
2902 int lane
, link_bw
, bpp
;
2903 /* eDP doesn't require FDI link, so just set DP M/N
2904 according to current link config */
2906 struct drm_connector
*edp
;
2907 target_clock
= mode
->clock
;
2908 edp
= intel_pipe_get_output(crtc
);
2909 intel_edp_link_config(to_intel_output(edp
),
2912 /* DP over FDI requires target mode clock
2913 instead of link clock */
2915 target_clock
= mode
->clock
;
2917 target_clock
= adjusted_mode
->clock
;
2922 /* determine panel color depth */
2923 temp
= I915_READ(pipeconf_reg
);
2925 switch (temp
& PIPE_BPC_MASK
) {
2939 DRM_ERROR("unknown pipe bpc value\n");
2943 igdng_compute_m_n(bpp
, lane
, target_clock
,
2947 /* Ironlake: try to setup display ref clock before DPLL
2948 * enabling. This is only under driver's control after
2949 * PCH B stepping, previous chipset stepping should be
2950 * ignoring this setting.
2952 if (IS_IGDNG(dev
)) {
2953 temp
= I915_READ(PCH_DREF_CONTROL
);
2954 /* Always enable nonspread source */
2955 temp
&= ~DREF_NONSPREAD_SOURCE_MASK
;
2956 temp
|= DREF_NONSPREAD_SOURCE_ENABLE
;
2957 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2958 POSTING_READ(PCH_DREF_CONTROL
);
2960 temp
&= ~DREF_SSC_SOURCE_MASK
;
2961 temp
|= DREF_SSC_SOURCE_ENABLE
;
2962 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2963 POSTING_READ(PCH_DREF_CONTROL
);
2968 if (dev_priv
->lvds_use_ssc
) {
2969 temp
|= DREF_SSC1_ENABLE
;
2970 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2971 POSTING_READ(PCH_DREF_CONTROL
);
2975 temp
&= ~DREF_CPU_SOURCE_OUTPUT_MASK
;
2976 temp
|= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD
;
2977 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2978 POSTING_READ(PCH_DREF_CONTROL
);
2980 temp
|= DREF_CPU_SOURCE_OUTPUT_NONSPREAD
;
2981 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2982 POSTING_READ(PCH_DREF_CONTROL
);
2988 fp
= (1 << clock
.n
) << 16 | clock
.m1
<< 8 | clock
.m2
;
2989 if (has_reduced_clock
)
2990 fp2
= (1 << reduced_clock
.n
) << 16 |
2991 reduced_clock
.m1
<< 8 | reduced_clock
.m2
;
2993 fp
= clock
.n
<< 16 | clock
.m1
<< 8 | clock
.m2
;
2994 if (has_reduced_clock
)
2995 fp2
= reduced_clock
.n
<< 16 | reduced_clock
.m1
<< 8 |
3000 dpll
= DPLL_VGA_MODE_DIS
;
3004 dpll
|= DPLLB_MODE_LVDS
;
3006 dpll
|= DPLLB_MODE_DAC_SERIAL
;
3008 dpll
|= DPLL_DVO_HIGH_SPEED
;
3009 sdvo_pixel_multiply
= adjusted_mode
->clock
/ mode
->clock
;
3010 if (IS_I945G(dev
) || IS_I945GM(dev
) || IS_G33(dev
))
3011 dpll
|= (sdvo_pixel_multiply
- 1) << SDVO_MULTIPLIER_SHIFT_HIRES
;
3012 else if (IS_IGDNG(dev
))
3013 dpll
|= (sdvo_pixel_multiply
- 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT
;
3016 dpll
|= DPLL_DVO_HIGH_SPEED
;
3018 /* compute bitmask from p1 value */
3020 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_IGD
;
3022 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
3025 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT
;
3026 if (IS_G4X(dev
) && has_reduced_clock
)
3027 dpll
|= (1 << (reduced_clock
.p1
- 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT
;
3031 dpll
|= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5
;
3034 dpll
|= DPLLB_LVDS_P2_CLOCK_DIV_7
;
3037 dpll
|= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10
;
3040 dpll
|= DPLLB_LVDS_P2_CLOCK_DIV_14
;
3043 if (IS_I965G(dev
) && !IS_IGDNG(dev
))
3044 dpll
|= (6 << PLL_LOAD_PULSE_PHASE_SHIFT
);
3047 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
3050 dpll
|= PLL_P1_DIVIDE_BY_TWO
;
3052 dpll
|= (clock
.p1
- 2) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
3054 dpll
|= PLL_P2_DIVIDE_BY_4
;
3058 if (is_sdvo
&& is_tv
)
3059 dpll
|= PLL_REF_INPUT_TVCLKINBC
;
3061 /* XXX: just matching BIOS for now */
3062 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3064 else if (is_lvds
&& dev_priv
->lvds_use_ssc
&& num_outputs
< 2)
3065 dpll
|= PLLB_REF_INPUT_SPREADSPECTRUMIN
;
3067 dpll
|= PLL_REF_INPUT_DREFCLK
;
3069 /* setup pipeconf */
3070 pipeconf
= I915_READ(pipeconf_reg
);
3072 /* Set up the display plane register */
3073 dspcntr
= DISPPLANE_GAMMA_ENABLE
;
3075 /* IGDNG's plane is forced to pipe, bit 24 is to
3076 enable color space conversion */
3077 if (!IS_IGDNG(dev
)) {
3079 dspcntr
&= ~DISPPLANE_SEL_PIPE_MASK
;
3081 dspcntr
|= DISPPLANE_SEL_PIPE_B
;
3084 if (pipe
== 0 && !IS_I965G(dev
)) {
3085 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3088 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3092 dev_priv
->display
.get_display_clock_speed(dev
) * 9 / 10)
3093 pipeconf
|= PIPEACONF_DOUBLE_WIDE
;
3095 pipeconf
&= ~PIPEACONF_DOUBLE_WIDE
;
3098 dspcntr
|= DISPLAY_PLANE_ENABLE
;
3099 pipeconf
|= PIPEACONF_ENABLE
;
3100 dpll
|= DPLL_VCO_ENABLE
;
3103 /* Disable the panel fitter if it was on our pipe */
3104 if (!IS_IGDNG(dev
) && intel_panel_fitter_pipe(dev
) == pipe
)
3105 I915_WRITE(PFIT_CONTROL
, 0);
3107 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe
== 0 ? 'A' : 'B');
3108 drm_mode_debug_printmodeline(mode
);
3110 /* assign to IGDNG registers */
3111 if (IS_IGDNG(dev
)) {
3112 fp_reg
= pch_fp_reg
;
3113 dpll_reg
= pch_dpll_reg
;
3117 igdng_disable_pll_edp(crtc
);
3118 } else if ((dpll
& DPLL_VCO_ENABLE
)) {
3119 I915_WRITE(fp_reg
, fp
);
3120 I915_WRITE(dpll_reg
, dpll
& ~DPLL_VCO_ENABLE
);
3121 I915_READ(dpll_reg
);
3125 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3126 * This is an exception to the general rule that mode_set doesn't turn
3133 lvds_reg
= PCH_LVDS
;
3135 lvds
= I915_READ(lvds_reg
);
3136 lvds
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
| LVDS_PIPEB_SELECT
;
3137 /* set the corresponsding LVDS_BORDER bit */
3138 lvds
|= dev_priv
->lvds_border_bits
;
3139 /* Set the B0-B3 data pairs corresponding to whether we're going to
3140 * set the DPLLs for dual-channel mode or not.
3143 lvds
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
3145 lvds
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
3147 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3148 * appropriately here, but we need to look more thoroughly into how
3149 * panels behave in the two modes.
3152 I915_WRITE(lvds_reg
, lvds
);
3153 I915_READ(lvds_reg
);
3156 intel_dp_set_m_n(crtc
, mode
, adjusted_mode
);
3159 I915_WRITE(fp_reg
, fp
);
3160 I915_WRITE(dpll_reg
, dpll
);
3161 I915_READ(dpll_reg
);
3162 /* Wait for the clocks to stabilize. */
3165 if (IS_I965G(dev
) && !IS_IGDNG(dev
)) {
3167 sdvo_pixel_multiply
= adjusted_mode
->clock
/ mode
->clock
;
3168 I915_WRITE(dpll_md_reg
, (0 << DPLL_MD_UDI_DIVIDER_SHIFT
) |
3169 ((sdvo_pixel_multiply
- 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT
));
3171 I915_WRITE(dpll_md_reg
, 0);
3173 /* write it again -- the BIOS does, after all */
3174 I915_WRITE(dpll_reg
, dpll
);
3176 I915_READ(dpll_reg
);
3177 /* Wait for the clocks to stabilize. */
3181 if (is_lvds
&& has_reduced_clock
&& i915_powersave
) {
3182 I915_WRITE(fp_reg
+ 4, fp2
);
3183 intel_crtc
->lowfreq_avail
= true;
3184 if (HAS_PIPE_CXSR(dev
)) {
3185 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
3186 pipeconf
|= PIPECONF_CXSR_DOWNCLOCK
;
3189 I915_WRITE(fp_reg
+ 4, fp
);
3190 intel_crtc
->lowfreq_avail
= false;
3191 if (HAS_PIPE_CXSR(dev
)) {
3192 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
3193 pipeconf
&= ~PIPECONF_CXSR_DOWNCLOCK
;
3197 I915_WRITE(htot_reg
, (adjusted_mode
->crtc_hdisplay
- 1) |
3198 ((adjusted_mode
->crtc_htotal
- 1) << 16));
3199 I915_WRITE(hblank_reg
, (adjusted_mode
->crtc_hblank_start
- 1) |
3200 ((adjusted_mode
->crtc_hblank_end
- 1) << 16));
3201 I915_WRITE(hsync_reg
, (adjusted_mode
->crtc_hsync_start
- 1) |
3202 ((adjusted_mode
->crtc_hsync_end
- 1) << 16));
3203 I915_WRITE(vtot_reg
, (adjusted_mode
->crtc_vdisplay
- 1) |
3204 ((adjusted_mode
->crtc_vtotal
- 1) << 16));
3205 I915_WRITE(vblank_reg
, (adjusted_mode
->crtc_vblank_start
- 1) |
3206 ((adjusted_mode
->crtc_vblank_end
- 1) << 16));
3207 I915_WRITE(vsync_reg
, (adjusted_mode
->crtc_vsync_start
- 1) |
3208 ((adjusted_mode
->crtc_vsync_end
- 1) << 16));
3209 /* pipesrc and dspsize control the size that is scaled from, which should
3210 * always be the user's requested size.
3212 if (!IS_IGDNG(dev
)) {
3213 I915_WRITE(dspsize_reg
, ((mode
->vdisplay
- 1) << 16) |
3214 (mode
->hdisplay
- 1));
3215 I915_WRITE(dsppos_reg
, 0);
3217 I915_WRITE(pipesrc_reg
, ((mode
->hdisplay
- 1) << 16) | (mode
->vdisplay
- 1));
3219 if (IS_IGDNG(dev
)) {
3220 I915_WRITE(data_m1_reg
, TU_SIZE(m_n
.tu
) | m_n
.gmch_m
);
3221 I915_WRITE(data_n1_reg
, TU_SIZE(m_n
.tu
) | m_n
.gmch_n
);
3222 I915_WRITE(link_m1_reg
, m_n
.link_m
);
3223 I915_WRITE(link_n1_reg
, m_n
.link_n
);
3226 igdng_set_pll_edp(crtc
, adjusted_mode
->clock
);
3228 /* enable FDI RX PLL too */
3229 temp
= I915_READ(fdi_rx_reg
);
3230 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_PLL_ENABLE
);
3235 I915_WRITE(pipeconf_reg
, pipeconf
);
3236 I915_READ(pipeconf_reg
);
3238 intel_wait_for_vblank(dev
);
3240 if (IS_IGDNG(dev
)) {
3241 /* enable address swizzle for tiling buffer */
3242 temp
= I915_READ(DISP_ARB_CTL
);
3243 I915_WRITE(DISP_ARB_CTL
, temp
| DISP_TILE_SURFACE_SWIZZLING
);
3246 I915_WRITE(dspcntr_reg
, dspcntr
);
3248 /* Flush the plane changes */
3249 ret
= intel_pipe_set_base(crtc
, x
, y
, old_fb
);
3251 if ((IS_I965G(dev
) || plane
== 0))
3252 intel_update_fbc(crtc
, &crtc
->mode
);
3254 intel_update_watermarks(dev
);
3256 drm_vblank_post_modeset(dev
, pipe
);
3261 /** Loads the palette/gamma unit for the CRTC with the prepared values */
3262 void intel_crtc_load_lut(struct drm_crtc
*crtc
)
3264 struct drm_device
*dev
= crtc
->dev
;
3265 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3266 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3267 int palreg
= (intel_crtc
->pipe
== 0) ? PALETTE_A
: PALETTE_B
;
3270 /* The clocks have to be on to load the palette. */
3274 /* use legacy palette for IGDNG */
3276 palreg
= (intel_crtc
->pipe
== 0) ? LGC_PALETTE_A
:
3279 for (i
= 0; i
< 256; i
++) {
3280 I915_WRITE(palreg
+ 4 * i
,
3281 (intel_crtc
->lut_r
[i
] << 16) |
3282 (intel_crtc
->lut_g
[i
] << 8) |
3283 intel_crtc
->lut_b
[i
]);
3287 static int intel_crtc_cursor_set(struct drm_crtc
*crtc
,
3288 struct drm_file
*file_priv
,
3290 uint32_t width
, uint32_t height
)
3292 struct drm_device
*dev
= crtc
->dev
;
3293 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3294 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3295 struct drm_gem_object
*bo
;
3296 struct drm_i915_gem_object
*obj_priv
;
3297 int pipe
= intel_crtc
->pipe
;
3298 uint32_t control
= (pipe
== 0) ? CURACNTR
: CURBCNTR
;
3299 uint32_t base
= (pipe
== 0) ? CURABASE
: CURBBASE
;
3300 uint32_t temp
= I915_READ(control
);
3304 DRM_DEBUG_KMS("\n");
3306 /* if we want to turn off the cursor ignore width and height */
3308 DRM_DEBUG_KMS("cursor off\n");
3309 if (IS_MOBILE(dev
) || IS_I9XX(dev
)) {
3310 temp
&= ~(CURSOR_MODE
| MCURSOR_GAMMA_ENABLE
);
3311 temp
|= CURSOR_MODE_DISABLE
;
3313 temp
&= ~(CURSOR_ENABLE
| CURSOR_GAMMA_ENABLE
);
3317 mutex_lock(&dev
->struct_mutex
);
3321 /* Currently we only support 64x64 cursors */
3322 if (width
!= 64 || height
!= 64) {
3323 DRM_ERROR("we currently only support 64x64 cursors\n");
3327 bo
= drm_gem_object_lookup(dev
, file_priv
, handle
);
3331 obj_priv
= bo
->driver_private
;
3333 if (bo
->size
< width
* height
* 4) {
3334 DRM_ERROR("buffer is to small\n");
3339 /* we only need to pin inside GTT if cursor is non-phy */
3340 mutex_lock(&dev
->struct_mutex
);
3341 if (!dev_priv
->cursor_needs_physical
) {
3342 ret
= i915_gem_object_pin(bo
, PAGE_SIZE
);
3344 DRM_ERROR("failed to pin cursor bo\n");
3347 addr
= obj_priv
->gtt_offset
;
3349 ret
= i915_gem_attach_phys_object(dev
, bo
, (pipe
== 0) ? I915_GEM_PHYS_CURSOR_0
: I915_GEM_PHYS_CURSOR_1
);
3351 DRM_ERROR("failed to attach phys object\n");
3354 addr
= obj_priv
->phys_obj
->handle
->busaddr
;
3358 I915_WRITE(CURSIZE
, (height
<< 12) | width
);
3360 /* Hooray for CUR*CNTR differences */
3361 if (IS_MOBILE(dev
) || IS_I9XX(dev
)) {
3362 temp
&= ~(CURSOR_MODE
| MCURSOR_PIPE_SELECT
);
3363 temp
|= CURSOR_MODE_64_ARGB_AX
| MCURSOR_GAMMA_ENABLE
;
3364 temp
|= (pipe
<< 28); /* Connect to correct pipe */
3366 temp
&= ~(CURSOR_FORMAT_MASK
);
3367 temp
|= CURSOR_ENABLE
;
3368 temp
|= CURSOR_FORMAT_ARGB
| CURSOR_GAMMA_ENABLE
;
3372 I915_WRITE(control
, temp
);
3373 I915_WRITE(base
, addr
);
3375 if (intel_crtc
->cursor_bo
) {
3376 if (dev_priv
->cursor_needs_physical
) {
3377 if (intel_crtc
->cursor_bo
!= bo
)
3378 i915_gem_detach_phys_object(dev
, intel_crtc
->cursor_bo
);
3380 i915_gem_object_unpin(intel_crtc
->cursor_bo
);
3381 drm_gem_object_unreference(intel_crtc
->cursor_bo
);
3384 mutex_unlock(&dev
->struct_mutex
);
3386 intel_crtc
->cursor_addr
= addr
;
3387 intel_crtc
->cursor_bo
= bo
;
3391 mutex_lock(&dev
->struct_mutex
);
3393 drm_gem_object_unreference(bo
);
3394 mutex_unlock(&dev
->struct_mutex
);
3398 static int intel_crtc_cursor_move(struct drm_crtc
*crtc
, int x
, int y
)
3400 struct drm_device
*dev
= crtc
->dev
;
3401 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3402 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3403 struct intel_framebuffer
*intel_fb
;
3404 int pipe
= intel_crtc
->pipe
;
3409 intel_fb
= to_intel_framebuffer(crtc
->fb
);
3410 intel_mark_busy(dev
, intel_fb
->obj
);
3414 temp
|= CURSOR_POS_SIGN
<< CURSOR_X_SHIFT
;
3418 temp
|= CURSOR_POS_SIGN
<< CURSOR_Y_SHIFT
;
3422 temp
|= x
<< CURSOR_X_SHIFT
;
3423 temp
|= y
<< CURSOR_Y_SHIFT
;
3425 adder
= intel_crtc
->cursor_addr
;
3426 I915_WRITE((pipe
== 0) ? CURAPOS
: CURBPOS
, temp
);
3427 I915_WRITE((pipe
== 0) ? CURABASE
: CURBBASE
, adder
);
3432 /** Sets the color ramps on behalf of RandR */
3433 void intel_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
3434 u16 blue
, int regno
)
3436 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3438 intel_crtc
->lut_r
[regno
] = red
>> 8;
3439 intel_crtc
->lut_g
[regno
] = green
>> 8;
3440 intel_crtc
->lut_b
[regno
] = blue
>> 8;
3443 void intel_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
3444 u16
*blue
, int regno
)
3446 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3448 *red
= intel_crtc
->lut_r
[regno
] << 8;
3449 *green
= intel_crtc
->lut_g
[regno
] << 8;
3450 *blue
= intel_crtc
->lut_b
[regno
] << 8;
3453 static void intel_crtc_gamma_set(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
3454 u16
*blue
, uint32_t size
)
3456 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3462 for (i
= 0; i
< 256; i
++) {
3463 intel_crtc
->lut_r
[i
] = red
[i
] >> 8;
3464 intel_crtc
->lut_g
[i
] = green
[i
] >> 8;
3465 intel_crtc
->lut_b
[i
] = blue
[i
] >> 8;
3468 intel_crtc_load_lut(crtc
);
3472 * Get a pipe with a simple mode set on it for doing load-based monitor
3475 * It will be up to the load-detect code to adjust the pipe as appropriate for
3476 * its requirements. The pipe will be connected to no other outputs.
3478 * Currently this code will only succeed if there is a pipe with no outputs
3479 * configured for it. In the future, it could choose to temporarily disable
3480 * some outputs to free up a pipe for its use.
3482 * \return crtc, or NULL if no pipes are available.
3485 /* VESA 640x480x72Hz mode to set on the pipe */
3486 static struct drm_display_mode load_detect_mode
= {
3487 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT
, 31500, 640, 664,
3488 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC
| DRM_MODE_FLAG_NVSYNC
),
3491 struct drm_crtc
*intel_get_load_detect_pipe(struct intel_output
*intel_output
,
3492 struct drm_display_mode
*mode
,
3495 struct intel_crtc
*intel_crtc
;
3496 struct drm_crtc
*possible_crtc
;
3497 struct drm_crtc
*supported_crtc
=NULL
;
3498 struct drm_encoder
*encoder
= &intel_output
->enc
;
3499 struct drm_crtc
*crtc
= NULL
;
3500 struct drm_device
*dev
= encoder
->dev
;
3501 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
3502 struct drm_crtc_helper_funcs
*crtc_funcs
;
3506 * Algorithm gets a little messy:
3507 * - if the connector already has an assigned crtc, use it (but make
3508 * sure it's on first)
3509 * - try to find the first unused crtc that can drive this connector,
3510 * and use that if we find one
3511 * - if there are no unused crtcs available, try to use the first
3512 * one we found that supports the connector
3515 /* See if we already have a CRTC for this connector */
3516 if (encoder
->crtc
) {
3517 crtc
= encoder
->crtc
;
3518 /* Make sure the crtc and connector are running */
3519 intel_crtc
= to_intel_crtc(crtc
);
3520 *dpms_mode
= intel_crtc
->dpms_mode
;
3521 if (intel_crtc
->dpms_mode
!= DRM_MODE_DPMS_ON
) {
3522 crtc_funcs
= crtc
->helper_private
;
3523 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
3524 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_ON
);
3529 /* Find an unused one (if possible) */
3530 list_for_each_entry(possible_crtc
, &dev
->mode_config
.crtc_list
, head
) {
3532 if (!(encoder
->possible_crtcs
& (1 << i
)))
3534 if (!possible_crtc
->enabled
) {
3535 crtc
= possible_crtc
;
3538 if (!supported_crtc
)
3539 supported_crtc
= possible_crtc
;
3543 * If we didn't find an unused CRTC, don't use any.
3549 encoder
->crtc
= crtc
;
3550 intel_output
->base
.encoder
= encoder
;
3551 intel_output
->load_detect_temp
= true;
3553 intel_crtc
= to_intel_crtc(crtc
);
3554 *dpms_mode
= intel_crtc
->dpms_mode
;
3556 if (!crtc
->enabled
) {
3558 mode
= &load_detect_mode
;
3559 drm_crtc_helper_set_mode(crtc
, mode
, 0, 0, crtc
->fb
);
3561 if (intel_crtc
->dpms_mode
!= DRM_MODE_DPMS_ON
) {
3562 crtc_funcs
= crtc
->helper_private
;
3563 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
3566 /* Add this connector to the crtc */
3567 encoder_funcs
->mode_set(encoder
, &crtc
->mode
, &crtc
->mode
);
3568 encoder_funcs
->commit(encoder
);
3570 /* let the connector get through one full cycle before testing */
3571 intel_wait_for_vblank(dev
);
3576 void intel_release_load_detect_pipe(struct intel_output
*intel_output
, int dpms_mode
)
3578 struct drm_encoder
*encoder
= &intel_output
->enc
;
3579 struct drm_device
*dev
= encoder
->dev
;
3580 struct drm_crtc
*crtc
= encoder
->crtc
;
3581 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
3582 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
3584 if (intel_output
->load_detect_temp
) {
3585 encoder
->crtc
= NULL
;
3586 intel_output
->base
.encoder
= NULL
;
3587 intel_output
->load_detect_temp
= false;
3588 crtc
->enabled
= drm_helper_crtc_in_use(crtc
);
3589 drm_helper_disable_unused_functions(dev
);
3592 /* Switch crtc and output back off if necessary */
3593 if (crtc
->enabled
&& dpms_mode
!= DRM_MODE_DPMS_ON
) {
3594 if (encoder
->crtc
== crtc
)
3595 encoder_funcs
->dpms(encoder
, dpms_mode
);
3596 crtc_funcs
->dpms(crtc
, dpms_mode
);
3600 /* Returns the clock of the currently programmed mode of the given pipe. */
3601 static int intel_crtc_clock_get(struct drm_device
*dev
, struct drm_crtc
*crtc
)
3603 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3604 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3605 int pipe
= intel_crtc
->pipe
;
3606 u32 dpll
= I915_READ((pipe
== 0) ? DPLL_A
: DPLL_B
);
3608 intel_clock_t clock
;
3610 if ((dpll
& DISPLAY_RATE_SELECT_FPA1
) == 0)
3611 fp
= I915_READ((pipe
== 0) ? FPA0
: FPB0
);
3613 fp
= I915_READ((pipe
== 0) ? FPA1
: FPB1
);
3615 clock
.m1
= (fp
& FP_M1_DIV_MASK
) >> FP_M1_DIV_SHIFT
;
3617 clock
.n
= ffs((fp
& FP_N_IGD_DIV_MASK
) >> FP_N_DIV_SHIFT
) - 1;
3618 clock
.m2
= (fp
& FP_M2_IGD_DIV_MASK
) >> FP_M2_DIV_SHIFT
;
3620 clock
.n
= (fp
& FP_N_DIV_MASK
) >> FP_N_DIV_SHIFT
;
3621 clock
.m2
= (fp
& FP_M2_DIV_MASK
) >> FP_M2_DIV_SHIFT
;
3626 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_IGD
) >>
3627 DPLL_FPA01_P1_POST_DIV_SHIFT_IGD
);
3629 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK
) >>
3630 DPLL_FPA01_P1_POST_DIV_SHIFT
);
3632 switch (dpll
& DPLL_MODE_MASK
) {
3633 case DPLLB_MODE_DAC_SERIAL
:
3634 clock
.p2
= dpll
& DPLL_DAC_SERIAL_P2_CLOCK_DIV_5
?
3637 case DPLLB_MODE_LVDS
:
3638 clock
.p2
= dpll
& DPLLB_LVDS_P2_CLOCK_DIV_7
?
3642 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
3643 "mode\n", (int)(dpll
& DPLL_MODE_MASK
));
3647 /* XXX: Handle the 100Mhz refclk */
3648 intel_clock(dev
, 96000, &clock
);
3650 bool is_lvds
= (pipe
== 1) && (I915_READ(LVDS
) & LVDS_PORT_EN
);
3653 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS
) >>
3654 DPLL_FPA01_P1_POST_DIV_SHIFT
);
3657 if ((dpll
& PLL_REF_INPUT_MASK
) ==
3658 PLLB_REF_INPUT_SPREADSPECTRUMIN
) {
3659 /* XXX: might not be 66MHz */
3660 intel_clock(dev
, 66000, &clock
);
3662 intel_clock(dev
, 48000, &clock
);
3664 if (dpll
& PLL_P1_DIVIDE_BY_TWO
)
3667 clock
.p1
= ((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_I830
) >>
3668 DPLL_FPA01_P1_POST_DIV_SHIFT
) + 2;
3670 if (dpll
& PLL_P2_DIVIDE_BY_4
)
3675 intel_clock(dev
, 48000, &clock
);
3679 /* XXX: It would be nice to validate the clocks, but we can't reuse
3680 * i830PllIsValid() because it relies on the xf86_config connector
3681 * configuration being accurate, which it isn't necessarily.
3687 /** Returns the currently programmed mode of the given pipe. */
3688 struct drm_display_mode
*intel_crtc_mode_get(struct drm_device
*dev
,
3689 struct drm_crtc
*crtc
)
3691 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3692 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3693 int pipe
= intel_crtc
->pipe
;
3694 struct drm_display_mode
*mode
;
3695 int htot
= I915_READ((pipe
== 0) ? HTOTAL_A
: HTOTAL_B
);
3696 int hsync
= I915_READ((pipe
== 0) ? HSYNC_A
: HSYNC_B
);
3697 int vtot
= I915_READ((pipe
== 0) ? VTOTAL_A
: VTOTAL_B
);
3698 int vsync
= I915_READ((pipe
== 0) ? VSYNC_A
: VSYNC_B
);
3700 mode
= kzalloc(sizeof(*mode
), GFP_KERNEL
);
3704 mode
->clock
= intel_crtc_clock_get(dev
, crtc
);
3705 mode
->hdisplay
= (htot
& 0xffff) + 1;
3706 mode
->htotal
= ((htot
& 0xffff0000) >> 16) + 1;
3707 mode
->hsync_start
= (hsync
& 0xffff) + 1;
3708 mode
->hsync_end
= ((hsync
& 0xffff0000) >> 16) + 1;
3709 mode
->vdisplay
= (vtot
& 0xffff) + 1;
3710 mode
->vtotal
= ((vtot
& 0xffff0000) >> 16) + 1;
3711 mode
->vsync_start
= (vsync
& 0xffff) + 1;
3712 mode
->vsync_end
= ((vsync
& 0xffff0000) >> 16) + 1;
3714 drm_mode_set_name(mode
);
3715 drm_mode_set_crtcinfo(mode
, 0);
3720 #define GPU_IDLE_TIMEOUT 500 /* ms */
3722 /* When this timer fires, we've been idle for awhile */
3723 static void intel_gpu_idle_timer(unsigned long arg
)
3725 struct drm_device
*dev
= (struct drm_device
*)arg
;
3726 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3728 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
3730 dev_priv
->busy
= false;
3732 queue_work(dev_priv
->wq
, &dev_priv
->idle_work
);
3735 void intel_increase_renderclock(struct drm_device
*dev
, bool schedule
)
3737 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3742 if (!dev_priv
->render_reclock_avail
) {
3743 DRM_DEBUG_DRIVER("not reclocking render clock\n");
3747 /* Restore render clock frequency to original value */
3748 if (IS_G4X(dev
) || IS_I9XX(dev
))
3749 pci_write_config_word(dev
->pdev
, GCFGC
, dev_priv
->orig_clock
);
3750 else if (IS_I85X(dev
))
3751 pci_write_config_word(dev
->pdev
, HPLLCC
, dev_priv
->orig_clock
);
3752 DRM_DEBUG_DRIVER("increasing render clock frequency\n");
3754 /* Schedule downclock */
3756 mod_timer(&dev_priv
->idle_timer
, jiffies
+
3757 msecs_to_jiffies(GPU_IDLE_TIMEOUT
));
3760 void intel_decrease_renderclock(struct drm_device
*dev
)
3762 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3767 if (!dev_priv
->render_reclock_avail
) {
3768 DRM_DEBUG_DRIVER("not reclocking render clock\n");
3775 /* Adjust render clock... */
3776 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3778 /* Down to minimum... */
3779 gcfgc
&= ~GM45_GC_RENDER_CLOCK_MASK
;
3780 gcfgc
|= GM45_GC_RENDER_CLOCK_266_MHZ
;
3782 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3783 } else if (IS_I965G(dev
)) {
3786 /* Adjust render clock... */
3787 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3789 /* Down to minimum... */
3790 gcfgc
&= ~I965_GC_RENDER_CLOCK_MASK
;
3791 gcfgc
|= I965_GC_RENDER_CLOCK_267_MHZ
;
3793 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3794 } else if (IS_I945G(dev
) || IS_I945GM(dev
)) {
3797 /* Adjust render clock... */
3798 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3800 /* Down to minimum... */
3801 gcfgc
&= ~I945_GC_RENDER_CLOCK_MASK
;
3802 gcfgc
|= I945_GC_RENDER_CLOCK_166_MHZ
;
3804 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3805 } else if (IS_I915G(dev
)) {
3808 /* Adjust render clock... */
3809 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3811 /* Down to minimum... */
3812 gcfgc
&= ~I915_GC_RENDER_CLOCK_MASK
;
3813 gcfgc
|= I915_GC_RENDER_CLOCK_166_MHZ
;
3815 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3816 } else if (IS_I85X(dev
)) {
3819 /* Adjust render clock... */
3820 pci_read_config_word(dev
->pdev
, HPLLCC
, &hpllcc
);
3822 /* Up to maximum... */
3823 hpllcc
&= ~GC_CLOCK_CONTROL_MASK
;
3824 hpllcc
|= GC_CLOCK_133_200
;
3826 pci_write_config_word(dev
->pdev
, HPLLCC
, hpllcc
);
3828 DRM_DEBUG_DRIVER("decreasing render clock frequency\n");
3831 /* Note that no increase function is needed for this - increase_renderclock()
3832 * will also rewrite these bits
3834 void intel_decrease_displayclock(struct drm_device
*dev
)
3839 if (IS_I945G(dev
) || IS_I945GM(dev
) || IS_I915G(dev
) ||
3843 /* Adjust render clock... */
3844 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3846 /* Down to minimum... */
3850 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3854 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
3856 static void intel_crtc_idle_timer(unsigned long arg
)
3858 struct intel_crtc
*intel_crtc
= (struct intel_crtc
*)arg
;
3859 struct drm_crtc
*crtc
= &intel_crtc
->base
;
3860 drm_i915_private_t
*dev_priv
= crtc
->dev
->dev_private
;
3862 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
3864 intel_crtc
->busy
= false;
3866 queue_work(dev_priv
->wq
, &dev_priv
->idle_work
);
3869 static void intel_increase_pllclock(struct drm_crtc
*crtc
, bool schedule
)
3871 struct drm_device
*dev
= crtc
->dev
;
3872 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3873 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3874 int pipe
= intel_crtc
->pipe
;
3875 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
3876 int dpll
= I915_READ(dpll_reg
);
3881 if (!dev_priv
->lvds_downclock_avail
)
3884 if (!HAS_PIPE_CXSR(dev
) && (dpll
& DISPLAY_RATE_SELECT_FPA1
)) {
3885 DRM_DEBUG_DRIVER("upclocking LVDS\n");
3887 /* Unlock panel regs */
3888 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) | (0xabcd << 16));
3890 dpll
&= ~DISPLAY_RATE_SELECT_FPA1
;
3891 I915_WRITE(dpll_reg
, dpll
);
3892 dpll
= I915_READ(dpll_reg
);
3893 intel_wait_for_vblank(dev
);
3894 dpll
= I915_READ(dpll_reg
);
3895 if (dpll
& DISPLAY_RATE_SELECT_FPA1
)
3896 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
3898 /* ...and lock them again */
3899 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) & 0x3);
3902 /* Schedule downclock */
3904 mod_timer(&intel_crtc
->idle_timer
, jiffies
+
3905 msecs_to_jiffies(CRTC_IDLE_TIMEOUT
));
3908 static void intel_decrease_pllclock(struct drm_crtc
*crtc
)
3910 struct drm_device
*dev
= crtc
->dev
;
3911 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3912 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3913 int pipe
= intel_crtc
->pipe
;
3914 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
3915 int dpll
= I915_READ(dpll_reg
);
3920 if (!dev_priv
->lvds_downclock_avail
)
3924 * Since this is called by a timer, we should never get here in
3927 if (!HAS_PIPE_CXSR(dev
) && intel_crtc
->lowfreq_avail
) {
3928 DRM_DEBUG_DRIVER("downclocking LVDS\n");
3930 /* Unlock panel regs */
3931 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) | (0xabcd << 16));
3933 dpll
|= DISPLAY_RATE_SELECT_FPA1
;
3934 I915_WRITE(dpll_reg
, dpll
);
3935 dpll
= I915_READ(dpll_reg
);
3936 intel_wait_for_vblank(dev
);
3937 dpll
= I915_READ(dpll_reg
);
3938 if (!(dpll
& DISPLAY_RATE_SELECT_FPA1
))
3939 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
3941 /* ...and lock them again */
3942 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) & 0x3);
3948 * intel_idle_update - adjust clocks for idleness
3949 * @work: work struct
3951 * Either the GPU or display (or both) went idle. Check the busy status
3952 * here and adjust the CRTC and GPU clocks as necessary.
3954 static void intel_idle_update(struct work_struct
*work
)
3956 drm_i915_private_t
*dev_priv
= container_of(work
, drm_i915_private_t
,
3958 struct drm_device
*dev
= dev_priv
->dev
;
3959 struct drm_crtc
*crtc
;
3960 struct intel_crtc
*intel_crtc
;
3962 if (!i915_powersave
)
3965 mutex_lock(&dev
->struct_mutex
);
3967 /* GPU isn't processing, downclock it. */
3968 if (!dev_priv
->busy
) {
3969 intel_decrease_renderclock(dev
);
3970 intel_decrease_displayclock(dev
);
3973 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
3974 /* Skip inactive CRTCs */
3978 intel_crtc
= to_intel_crtc(crtc
);
3979 if (!intel_crtc
->busy
)
3980 intel_decrease_pllclock(crtc
);
3983 mutex_unlock(&dev
->struct_mutex
);
3987 * intel_mark_busy - mark the GPU and possibly the display busy
3989 * @obj: object we're operating on
3991 * Callers can use this function to indicate that the GPU is busy processing
3992 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
3993 * buffer), we'll also mark the display as busy, so we know to increase its
3996 void intel_mark_busy(struct drm_device
*dev
, struct drm_gem_object
*obj
)
3998 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3999 struct drm_crtc
*crtc
= NULL
;
4000 struct intel_framebuffer
*intel_fb
;
4001 struct intel_crtc
*intel_crtc
;
4003 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
4006 dev_priv
->busy
= true;
4007 intel_increase_renderclock(dev
, true);
4009 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
4013 intel_crtc
= to_intel_crtc(crtc
);
4014 intel_fb
= to_intel_framebuffer(crtc
->fb
);
4015 if (intel_fb
->obj
== obj
) {
4016 if (!intel_crtc
->busy
) {
4017 /* Non-busy -> busy, upclock */
4018 intel_increase_pllclock(crtc
, true);
4019 intel_crtc
->busy
= true;
4021 /* Busy -> busy, put off timer */
4022 mod_timer(&intel_crtc
->idle_timer
, jiffies
+
4023 msecs_to_jiffies(CRTC_IDLE_TIMEOUT
));
4029 static void intel_crtc_destroy(struct drm_crtc
*crtc
)
4031 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
4033 drm_crtc_cleanup(crtc
);
4037 static const struct drm_crtc_helper_funcs intel_helper_funcs
= {
4038 .dpms
= intel_crtc_dpms
,
4039 .mode_fixup
= intel_crtc_mode_fixup
,
4040 .mode_set
= intel_crtc_mode_set
,
4041 .mode_set_base
= intel_pipe_set_base
,
4042 .prepare
= intel_crtc_prepare
,
4043 .commit
= intel_crtc_commit
,
4044 .load_lut
= intel_crtc_load_lut
,
4047 static const struct drm_crtc_funcs intel_crtc_funcs
= {
4048 .cursor_set
= intel_crtc_cursor_set
,
4049 .cursor_move
= intel_crtc_cursor_move
,
4050 .gamma_set
= intel_crtc_gamma_set
,
4051 .set_config
= drm_crtc_helper_set_config
,
4052 .destroy
= intel_crtc_destroy
,
4056 static void intel_crtc_init(struct drm_device
*dev
, int pipe
)
4058 struct intel_crtc
*intel_crtc
;
4061 intel_crtc
= kzalloc(sizeof(struct intel_crtc
) + (INTELFB_CONN_LIMIT
* sizeof(struct drm_connector
*)), GFP_KERNEL
);
4062 if (intel_crtc
== NULL
)
4065 drm_crtc_init(dev
, &intel_crtc
->base
, &intel_crtc_funcs
);
4067 drm_mode_crtc_set_gamma_size(&intel_crtc
->base
, 256);
4068 intel_crtc
->pipe
= pipe
;
4069 intel_crtc
->plane
= pipe
;
4070 for (i
= 0; i
< 256; i
++) {
4071 intel_crtc
->lut_r
[i
] = i
;
4072 intel_crtc
->lut_g
[i
] = i
;
4073 intel_crtc
->lut_b
[i
] = i
;
4076 /* Swap pipes & planes for FBC on pre-965 */
4077 intel_crtc
->pipe
= pipe
;
4078 intel_crtc
->plane
= pipe
;
4079 if (IS_MOBILE(dev
) && (IS_I9XX(dev
) && !IS_I965G(dev
))) {
4080 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
4081 intel_crtc
->plane
= ((pipe
== 0) ? 1 : 0);
4084 intel_crtc
->cursor_addr
= 0;
4085 intel_crtc
->dpms_mode
= DRM_MODE_DPMS_OFF
;
4086 drm_crtc_helper_add(&intel_crtc
->base
, &intel_helper_funcs
);
4088 intel_crtc
->busy
= false;
4090 setup_timer(&intel_crtc
->idle_timer
, intel_crtc_idle_timer
,
4091 (unsigned long)intel_crtc
);
4094 int intel_get_pipe_from_crtc_id(struct drm_device
*dev
, void *data
,
4095 struct drm_file
*file_priv
)
4097 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
4098 struct drm_i915_get_pipe_from_crtc_id
*pipe_from_crtc_id
= data
;
4099 struct drm_mode_object
*drmmode_obj
;
4100 struct intel_crtc
*crtc
;
4103 DRM_ERROR("called with no initialization\n");
4107 drmmode_obj
= drm_mode_object_find(dev
, pipe_from_crtc_id
->crtc_id
,
4108 DRM_MODE_OBJECT_CRTC
);
4111 DRM_ERROR("no such CRTC id\n");
4115 crtc
= to_intel_crtc(obj_to_crtc(drmmode_obj
));
4116 pipe_from_crtc_id
->pipe
= crtc
->pipe
;
4121 struct drm_crtc
*intel_get_crtc_from_pipe(struct drm_device
*dev
, int pipe
)
4123 struct drm_crtc
*crtc
= NULL
;
4125 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
4126 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
4127 if (intel_crtc
->pipe
== pipe
)
4133 static int intel_connector_clones(struct drm_device
*dev
, int type_mask
)
4136 struct drm_connector
*connector
;
4139 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4140 struct intel_output
*intel_output
= to_intel_output(connector
);
4141 if (type_mask
& intel_output
->clone_mask
)
4142 index_mask
|= (1 << entry
);
4149 static void intel_setup_outputs(struct drm_device
*dev
)
4151 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4152 struct drm_connector
*connector
;
4154 intel_crt_init(dev
);
4156 /* Set up integrated LVDS */
4157 if (IS_MOBILE(dev
) && !IS_I830(dev
))
4158 intel_lvds_init(dev
);
4160 if (IS_IGDNG(dev
)) {
4163 if (IS_MOBILE(dev
) && (I915_READ(DP_A
) & DP_DETECTED
))
4164 intel_dp_init(dev
, DP_A
);
4166 if (I915_READ(HDMIB
) & PORT_DETECTED
) {
4168 /* found = intel_sdvo_init(dev, HDMIB); */
4171 intel_hdmi_init(dev
, HDMIB
);
4172 if (!found
&& (I915_READ(PCH_DP_B
) & DP_DETECTED
))
4173 intel_dp_init(dev
, PCH_DP_B
);
4176 if (I915_READ(HDMIC
) & PORT_DETECTED
)
4177 intel_hdmi_init(dev
, HDMIC
);
4179 if (I915_READ(HDMID
) & PORT_DETECTED
)
4180 intel_hdmi_init(dev
, HDMID
);
4182 if (I915_READ(PCH_DP_C
) & DP_DETECTED
)
4183 intel_dp_init(dev
, PCH_DP_C
);
4185 if (I915_READ(PCH_DP_D
) & DP_DETECTED
)
4186 intel_dp_init(dev
, PCH_DP_D
);
4188 } else if (IS_I9XX(dev
)) {
4191 if (I915_READ(SDVOB
) & SDVO_DETECTED
) {
4192 found
= intel_sdvo_init(dev
, SDVOB
);
4193 if (!found
&& SUPPORTS_INTEGRATED_HDMI(dev
))
4194 intel_hdmi_init(dev
, SDVOB
);
4196 if (!found
&& SUPPORTS_INTEGRATED_DP(dev
))
4197 intel_dp_init(dev
, DP_B
);
4200 /* Before G4X SDVOC doesn't have its own detect register */
4202 if (I915_READ(SDVOB
) & SDVO_DETECTED
)
4203 found
= intel_sdvo_init(dev
, SDVOC
);
4205 if (!found
&& (I915_READ(SDVOC
) & SDVO_DETECTED
)) {
4207 if (SUPPORTS_INTEGRATED_HDMI(dev
))
4208 intel_hdmi_init(dev
, SDVOC
);
4209 if (SUPPORTS_INTEGRATED_DP(dev
))
4210 intel_dp_init(dev
, DP_C
);
4213 if (SUPPORTS_INTEGRATED_DP(dev
) && (I915_READ(DP_D
) & DP_DETECTED
))
4214 intel_dp_init(dev
, DP_D
);
4216 intel_dvo_init(dev
);
4218 if (IS_I9XX(dev
) && IS_MOBILE(dev
) && !IS_IGDNG(dev
))
4221 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4222 struct intel_output
*intel_output
= to_intel_output(connector
);
4223 struct drm_encoder
*encoder
= &intel_output
->enc
;
4225 encoder
->possible_crtcs
= intel_output
->crtc_mask
;
4226 encoder
->possible_clones
= intel_connector_clones(dev
,
4227 intel_output
->clone_mask
);
4231 static void intel_user_framebuffer_destroy(struct drm_framebuffer
*fb
)
4233 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
4234 struct drm_device
*dev
= fb
->dev
;
4237 intelfb_remove(dev
, fb
);
4239 drm_framebuffer_cleanup(fb
);
4240 mutex_lock(&dev
->struct_mutex
);
4241 drm_gem_object_unreference(intel_fb
->obj
);
4242 mutex_unlock(&dev
->struct_mutex
);
4247 static int intel_user_framebuffer_create_handle(struct drm_framebuffer
*fb
,
4248 struct drm_file
*file_priv
,
4249 unsigned int *handle
)
4251 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
4252 struct drm_gem_object
*object
= intel_fb
->obj
;
4254 return drm_gem_handle_create(file_priv
, object
, handle
);
4257 static const struct drm_framebuffer_funcs intel_fb_funcs
= {
4258 .destroy
= intel_user_framebuffer_destroy
,
4259 .create_handle
= intel_user_framebuffer_create_handle
,
4262 int intel_framebuffer_create(struct drm_device
*dev
,
4263 struct drm_mode_fb_cmd
*mode_cmd
,
4264 struct drm_framebuffer
**fb
,
4265 struct drm_gem_object
*obj
)
4267 struct intel_framebuffer
*intel_fb
;
4270 intel_fb
= kzalloc(sizeof(*intel_fb
), GFP_KERNEL
);
4274 ret
= drm_framebuffer_init(dev
, &intel_fb
->base
, &intel_fb_funcs
);
4276 DRM_ERROR("framebuffer init failed %d\n", ret
);
4280 drm_helper_mode_fill_fb_struct(&intel_fb
->base
, mode_cmd
);
4282 intel_fb
->obj
= obj
;
4284 *fb
= &intel_fb
->base
;
4290 static struct drm_framebuffer
*
4291 intel_user_framebuffer_create(struct drm_device
*dev
,
4292 struct drm_file
*filp
,
4293 struct drm_mode_fb_cmd
*mode_cmd
)
4295 struct drm_gem_object
*obj
;
4296 struct drm_framebuffer
*fb
;
4299 obj
= drm_gem_object_lookup(dev
, filp
, mode_cmd
->handle
);
4303 ret
= intel_framebuffer_create(dev
, mode_cmd
, &fb
, obj
);
4305 mutex_lock(&dev
->struct_mutex
);
4306 drm_gem_object_unreference(obj
);
4307 mutex_unlock(&dev
->struct_mutex
);
4314 static const struct drm_mode_config_funcs intel_mode_funcs
= {
4315 .fb_create
= intel_user_framebuffer_create
,
4316 .fb_changed
= intelfb_probe
,
4319 void intel_init_clock_gating(struct drm_device
*dev
)
4321 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4324 * Disable clock gating reported to work incorrectly according to the
4325 * specs, but enable as much else as we can.
4327 if (IS_IGDNG(dev
)) {
4329 } else if (IS_G4X(dev
)) {
4330 uint32_t dspclk_gate
;
4331 I915_WRITE(RENCLK_GATE_D1
, 0);
4332 I915_WRITE(RENCLK_GATE_D2
, VF_UNIT_CLOCK_GATE_DISABLE
|
4333 GS_UNIT_CLOCK_GATE_DISABLE
|
4334 CL_UNIT_CLOCK_GATE_DISABLE
);
4335 I915_WRITE(RAMCLK_GATE_D
, 0);
4336 dspclk_gate
= VRHUNIT_CLOCK_GATE_DISABLE
|
4337 OVRUNIT_CLOCK_GATE_DISABLE
|
4338 OVCUNIT_CLOCK_GATE_DISABLE
;
4340 dspclk_gate
|= DSSUNIT_CLOCK_GATE_DISABLE
;
4341 I915_WRITE(DSPCLK_GATE_D
, dspclk_gate
);
4342 } else if (IS_I965GM(dev
)) {
4343 I915_WRITE(RENCLK_GATE_D1
, I965_RCC_CLOCK_GATE_DISABLE
);
4344 I915_WRITE(RENCLK_GATE_D2
, 0);
4345 I915_WRITE(DSPCLK_GATE_D
, 0);
4346 I915_WRITE(RAMCLK_GATE_D
, 0);
4347 I915_WRITE16(DEUC
, 0);
4348 } else if (IS_I965G(dev
)) {
4349 I915_WRITE(RENCLK_GATE_D1
, I965_RCZ_CLOCK_GATE_DISABLE
|
4350 I965_RCC_CLOCK_GATE_DISABLE
|
4351 I965_RCPB_CLOCK_GATE_DISABLE
|
4352 I965_ISC_CLOCK_GATE_DISABLE
|
4353 I965_FBC_CLOCK_GATE_DISABLE
);
4354 I915_WRITE(RENCLK_GATE_D2
, 0);
4355 } else if (IS_I9XX(dev
)) {
4356 u32 dstate
= I915_READ(D_STATE
);
4358 dstate
|= DSTATE_PLL_D3_OFF
| DSTATE_GFX_CLOCK_GATING
|
4359 DSTATE_DOT_CLOCK_GATING
;
4360 I915_WRITE(D_STATE
, dstate
);
4361 } else if (IS_I85X(dev
) || IS_I865G(dev
)) {
4362 I915_WRITE(RENCLK_GATE_D1
, SV_CLOCK_GATE_DISABLE
);
4363 } else if (IS_I830(dev
)) {
4364 I915_WRITE(DSPCLK_GATE_D
, OVRUNIT_CLOCK_GATE_DISABLE
);
4368 * GPU can automatically power down the render unit if given a page
4371 if (I915_HAS_RC6(dev
)) {
4372 struct drm_gem_object
*pwrctx
;
4373 struct drm_i915_gem_object
*obj_priv
;
4376 pwrctx
= drm_gem_object_alloc(dev
, 4096);
4378 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
4382 ret
= i915_gem_object_pin(pwrctx
, 4096);
4384 DRM_ERROR("failed to pin power context: %d\n", ret
);
4385 drm_gem_object_unreference(pwrctx
);
4389 i915_gem_object_set_to_gtt_domain(pwrctx
, 1);
4391 obj_priv
= pwrctx
->driver_private
;
4393 I915_WRITE(PWRCTXA
, obj_priv
->gtt_offset
| PWRCTX_EN
);
4394 I915_WRITE(MCHBAR_RENDER_STANDBY
,
4395 I915_READ(MCHBAR_RENDER_STANDBY
) & ~RCX_SW_EXIT
);
4397 dev_priv
->pwrctx
= pwrctx
;
4404 /* Set up chip specific display functions */
4405 static void intel_init_display(struct drm_device
*dev
)
4407 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4409 /* We always want a DPMS function */
4411 dev_priv
->display
.dpms
= igdng_crtc_dpms
;
4413 dev_priv
->display
.dpms
= i9xx_crtc_dpms
;
4415 /* Only mobile has FBC, leave pointers NULL for other chips */
4416 if (IS_MOBILE(dev
)) {
4418 dev_priv
->display
.fbc_enabled
= g4x_fbc_enabled
;
4419 dev_priv
->display
.enable_fbc
= g4x_enable_fbc
;
4420 dev_priv
->display
.disable_fbc
= g4x_disable_fbc
;
4421 } else if (IS_I965GM(dev
) || IS_I945GM(dev
) || IS_I915GM(dev
)) {
4422 dev_priv
->display
.fbc_enabled
= i8xx_fbc_enabled
;
4423 dev_priv
->display
.enable_fbc
= i8xx_enable_fbc
;
4424 dev_priv
->display
.disable_fbc
= i8xx_disable_fbc
;
4426 /* 855GM needs testing */
4429 /* Returns the core display clock speed */
4430 if (IS_I945G(dev
) || (IS_G33(dev
) && ! IS_IGDGM(dev
)))
4431 dev_priv
->display
.get_display_clock_speed
=
4432 i945_get_display_clock_speed
;
4433 else if (IS_I915G(dev
))
4434 dev_priv
->display
.get_display_clock_speed
=
4435 i915_get_display_clock_speed
;
4436 else if (IS_I945GM(dev
) || IS_845G(dev
) || IS_IGDGM(dev
))
4437 dev_priv
->display
.get_display_clock_speed
=
4438 i9xx_misc_get_display_clock_speed
;
4439 else if (IS_I915GM(dev
))
4440 dev_priv
->display
.get_display_clock_speed
=
4441 i915gm_get_display_clock_speed
;
4442 else if (IS_I865G(dev
))
4443 dev_priv
->display
.get_display_clock_speed
=
4444 i865_get_display_clock_speed
;
4445 else if (IS_I85X(dev
))
4446 dev_priv
->display
.get_display_clock_speed
=
4447 i855_get_display_clock_speed
;
4449 dev_priv
->display
.get_display_clock_speed
=
4450 i830_get_display_clock_speed
;
4452 /* For FIFO watermark updates */
4454 dev_priv
->display
.update_wm
= NULL
;
4455 else if (IS_G4X(dev
))
4456 dev_priv
->display
.update_wm
= g4x_update_wm
;
4457 else if (IS_I965G(dev
))
4458 dev_priv
->display
.update_wm
= i965_update_wm
;
4459 else if (IS_I9XX(dev
) || IS_MOBILE(dev
)) {
4460 dev_priv
->display
.update_wm
= i9xx_update_wm
;
4461 dev_priv
->display
.get_fifo_size
= i9xx_get_fifo_size
;
4464 dev_priv
->display
.get_fifo_size
= i85x_get_fifo_size
;
4465 else if (IS_845G(dev
))
4466 dev_priv
->display
.get_fifo_size
= i845_get_fifo_size
;
4468 dev_priv
->display
.get_fifo_size
= i830_get_fifo_size
;
4469 dev_priv
->display
.update_wm
= i830_update_wm
;
4473 void intel_modeset_init(struct drm_device
*dev
)
4475 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4479 drm_mode_config_init(dev
);
4481 dev
->mode_config
.min_width
= 0;
4482 dev
->mode_config
.min_height
= 0;
4484 dev
->mode_config
.funcs
= (void *)&intel_mode_funcs
;
4486 intel_init_display(dev
);
4488 if (IS_I965G(dev
)) {
4489 dev
->mode_config
.max_width
= 8192;
4490 dev
->mode_config
.max_height
= 8192;
4491 } else if (IS_I9XX(dev
)) {
4492 dev
->mode_config
.max_width
= 4096;
4493 dev
->mode_config
.max_height
= 4096;
4495 dev
->mode_config
.max_width
= 2048;
4496 dev
->mode_config
.max_height
= 2048;
4499 /* set memory base */
4501 dev
->mode_config
.fb_base
= pci_resource_start(dev
->pdev
, 2);
4503 dev
->mode_config
.fb_base
= pci_resource_start(dev
->pdev
, 0);
4505 if (IS_MOBILE(dev
) || IS_I9XX(dev
))
4509 DRM_DEBUG_KMS("%d display pipe%s available.\n",
4510 num_pipe
, num_pipe
> 1 ? "s" : "");
4513 pci_read_config_word(dev
->pdev
, HPLLCC
, &dev_priv
->orig_clock
);
4514 else if (IS_I9XX(dev
) || IS_G4X(dev
))
4515 pci_read_config_word(dev
->pdev
, GCFGC
, &dev_priv
->orig_clock
);
4517 for (i
= 0; i
< num_pipe
; i
++) {
4518 intel_crtc_init(dev
, i
);
4521 intel_setup_outputs(dev
);
4523 intel_init_clock_gating(dev
);
4525 INIT_WORK(&dev_priv
->idle_work
, intel_idle_update
);
4526 setup_timer(&dev_priv
->idle_timer
, intel_gpu_idle_timer
,
4527 (unsigned long)dev
);
4529 intel_setup_overlay(dev
);
4532 void intel_modeset_cleanup(struct drm_device
*dev
)
4534 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4535 struct drm_crtc
*crtc
;
4536 struct intel_crtc
*intel_crtc
;
4538 mutex_lock(&dev
->struct_mutex
);
4540 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
4541 /* Skip inactive CRTCs */
4545 intel_crtc
= to_intel_crtc(crtc
);
4546 intel_increase_pllclock(crtc
, false);
4547 del_timer_sync(&intel_crtc
->idle_timer
);
4550 intel_increase_renderclock(dev
, false);
4551 del_timer_sync(&dev_priv
->idle_timer
);
4553 mutex_unlock(&dev
->struct_mutex
);
4555 if (dev_priv
->display
.disable_fbc
)
4556 dev_priv
->display
.disable_fbc(dev
);
4558 if (dev_priv
->pwrctx
) {
4559 i915_gem_object_unpin(dev_priv
->pwrctx
);
4560 drm_gem_object_unreference(dev_priv
->pwrctx
);
4563 drm_mode_config_cleanup(dev
);
4567 /* current intel driver doesn't take advantage of encoders
4568 always give back the encoder for the connector
4570 struct drm_encoder
*intel_best_encoder(struct drm_connector
*connector
)
4572 struct intel_output
*intel_output
= to_intel_output(connector
);
4574 return &intel_output
->enc
;
4578 * set vga decode state - true == enable VGA decode
4580 int intel_modeset_vga_set_state(struct drm_device
*dev
, bool state
)
4582 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4585 pci_read_config_word(dev_priv
->bridge_dev
, INTEL_GMCH_CTRL
, &gmch_ctrl
);
4587 gmch_ctrl
&= ~INTEL_GMCH_VGA_DISABLE
;
4589 gmch_ctrl
|= INTEL_GMCH_VGA_DISABLE
;
4590 pci_write_config_word(dev_priv
->bridge_dev
, INTEL_GMCH_CTRL
, gmch_ctrl
);