Commit | Line | Data |
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a4fc5ed6 KP |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Keith Packard <keithp@keithp.com> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include <linux/i2c.h> | |
5a0e3ad6 | 29 | #include <linux/slab.h> |
2d1a8a48 | 30 | #include <linux/export.h> |
760285e7 DH |
31 | #include <drm/drmP.h> |
32 | #include <drm/drm_crtc.h> | |
33 | #include <drm/drm_crtc_helper.h> | |
34 | #include <drm/drm_edid.h> | |
a4fc5ed6 | 35 | #include "intel_drv.h" |
760285e7 | 36 | #include <drm/i915_drm.h> |
a4fc5ed6 | 37 | #include "i915_drv.h" |
a4fc5ed6 | 38 | |
a4fc5ed6 KP |
39 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) |
40 | ||
cfcb0fc9 JB |
41 | /** |
42 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
43 | * @intel_dp: DP struct | |
44 | * | |
45 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
46 | * will return true, and false otherwise. | |
47 | */ | |
48 | static bool is_edp(struct intel_dp *intel_dp) | |
49 | { | |
da63a9f2 PZ |
50 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
51 | ||
52 | return intel_dig_port->base.type == INTEL_OUTPUT_EDP; | |
cfcb0fc9 JB |
53 | } |
54 | ||
68b4d824 | 55 | static struct drm_device *intel_dp_to_dev(struct intel_dp *intel_dp) |
cfcb0fc9 | 56 | { |
68b4d824 ID |
57 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
58 | ||
59 | return intel_dig_port->base.base.dev; | |
cfcb0fc9 JB |
60 | } |
61 | ||
df0e9248 CW |
62 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
63 | { | |
fa90ecef | 64 | return enc_to_intel_dp(&intel_attached_encoder(connector)->base); |
df0e9248 CW |
65 | } |
66 | ||
ea5b213a | 67 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
a4fc5ed6 | 68 | |
a4fc5ed6 | 69 | static int |
ea5b213a | 70 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 71 | { |
7183dc29 | 72 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
73 | |
74 | switch (max_link_bw) { | |
75 | case DP_LINK_BW_1_62: | |
76 | case DP_LINK_BW_2_7: | |
77 | break; | |
d4eead50 ID |
78 | case DP_LINK_BW_5_4: /* 1.2 capable displays may advertise higher bw */ |
79 | max_link_bw = DP_LINK_BW_2_7; | |
80 | break; | |
a4fc5ed6 | 81 | default: |
d4eead50 ID |
82 | WARN(1, "invalid max DP link bw val %x, using 1.62Gbps\n", |
83 | max_link_bw); | |
a4fc5ed6 KP |
84 | max_link_bw = DP_LINK_BW_1_62; |
85 | break; | |
86 | } | |
87 | return max_link_bw; | |
88 | } | |
89 | ||
cd9dde44 AJ |
90 | /* |
91 | * The units on the numbers in the next two are... bizarre. Examples will | |
92 | * make it clearer; this one parallels an example in the eDP spec. | |
93 | * | |
94 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
95 | * | |
96 | * 270000 * 1 * 8 / 10 == 216000 | |
97 | * | |
98 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
99 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
100 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
101 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
102 | * | |
103 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
104 | * get the result in decakilobits instead of kilobits. | |
105 | */ | |
106 | ||
a4fc5ed6 | 107 | static int |
c898261c | 108 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 109 | { |
cd9dde44 | 110 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
111 | } |
112 | ||
fe27d53e DA |
113 | static int |
114 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
115 | { | |
116 | return (max_link_clock * max_lanes * 8) / 10; | |
117 | } | |
118 | ||
a4fc5ed6 KP |
119 | static int |
120 | intel_dp_mode_valid(struct drm_connector *connector, | |
121 | struct drm_display_mode *mode) | |
122 | { | |
df0e9248 | 123 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e JN |
124 | struct intel_connector *intel_connector = to_intel_connector(connector); |
125 | struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode; | |
36008365 DV |
126 | int target_clock = mode->clock; |
127 | int max_rate, mode_rate, max_lanes, max_link_clock; | |
a4fc5ed6 | 128 | |
dd06f90e JN |
129 | if (is_edp(intel_dp) && fixed_mode) { |
130 | if (mode->hdisplay > fixed_mode->hdisplay) | |
7de56f43 ZY |
131 | return MODE_PANEL; |
132 | ||
dd06f90e | 133 | if (mode->vdisplay > fixed_mode->vdisplay) |
7de56f43 | 134 | return MODE_PANEL; |
03afc4a2 DV |
135 | |
136 | target_clock = fixed_mode->clock; | |
7de56f43 ZY |
137 | } |
138 | ||
36008365 DV |
139 | max_link_clock = drm_dp_bw_code_to_link_rate(intel_dp_max_link_bw(intel_dp)); |
140 | max_lanes = drm_dp_max_lane_count(intel_dp->dpcd); | |
141 | ||
142 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
143 | mode_rate = intel_dp_link_required(target_clock, 18); | |
144 | ||
145 | if (mode_rate > max_rate) | |
c4867936 | 146 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
147 | |
148 | if (mode->clock < 10000) | |
149 | return MODE_CLOCK_LOW; | |
150 | ||
0af78a2b DV |
151 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
152 | return MODE_H_ILLEGAL; | |
153 | ||
a4fc5ed6 KP |
154 | return MODE_OK; |
155 | } | |
156 | ||
157 | static uint32_t | |
158 | pack_aux(uint8_t *src, int src_bytes) | |
159 | { | |
160 | int i; | |
161 | uint32_t v = 0; | |
162 | ||
163 | if (src_bytes > 4) | |
164 | src_bytes = 4; | |
165 | for (i = 0; i < src_bytes; i++) | |
166 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
167 | return v; | |
168 | } | |
169 | ||
170 | static void | |
171 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
172 | { | |
173 | int i; | |
174 | if (dst_bytes > 4) | |
175 | dst_bytes = 4; | |
176 | for (i = 0; i < dst_bytes; i++) | |
177 | dst[i] = src >> ((3-i) * 8); | |
178 | } | |
179 | ||
fb0f8fbf KP |
180 | /* hrawclock is 1/4 the FSB frequency */ |
181 | static int | |
182 | intel_hrawclk(struct drm_device *dev) | |
183 | { | |
184 | struct drm_i915_private *dev_priv = dev->dev_private; | |
185 | uint32_t clkcfg; | |
186 | ||
9473c8f4 VP |
187 | /* There is no CLKCFG reg in Valleyview. VLV hrawclk is 200 MHz */ |
188 | if (IS_VALLEYVIEW(dev)) | |
189 | return 200; | |
190 | ||
fb0f8fbf KP |
191 | clkcfg = I915_READ(CLKCFG); |
192 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
193 | case CLKCFG_FSB_400: | |
194 | return 100; | |
195 | case CLKCFG_FSB_533: | |
196 | return 133; | |
197 | case CLKCFG_FSB_667: | |
198 | return 166; | |
199 | case CLKCFG_FSB_800: | |
200 | return 200; | |
201 | case CLKCFG_FSB_1067: | |
202 | return 266; | |
203 | case CLKCFG_FSB_1333: | |
204 | return 333; | |
205 | /* these two are just a guess; one of them might be right */ | |
206 | case CLKCFG_FSB_1600: | |
207 | case CLKCFG_FSB_1600_ALT: | |
208 | return 400; | |
209 | default: | |
210 | return 133; | |
211 | } | |
212 | } | |
213 | ||
ebf33b18 KP |
214 | static bool ironlake_edp_have_panel_power(struct intel_dp *intel_dp) |
215 | { | |
30add22d | 216 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 217 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 218 | u32 pp_stat_reg; |
ebf33b18 | 219 | |
453c5420 JB |
220 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
221 | return (I915_READ(pp_stat_reg) & PP_ON) != 0; | |
ebf33b18 KP |
222 | } |
223 | ||
224 | static bool ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp) | |
225 | { | |
30add22d | 226 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
ebf33b18 | 227 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 228 | u32 pp_ctrl_reg; |
ebf33b18 | 229 | |
453c5420 JB |
230 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; |
231 | return (I915_READ(pp_ctrl_reg) & EDP_FORCE_VDD) != 0; | |
ebf33b18 KP |
232 | } |
233 | ||
9b984dae KP |
234 | static void |
235 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
236 | { | |
30add22d | 237 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9b984dae | 238 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 | 239 | u32 pp_stat_reg, pp_ctrl_reg; |
ebf33b18 | 240 | |
9b984dae KP |
241 | if (!is_edp(intel_dp)) |
242 | return; | |
453c5420 JB |
243 | |
244 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; | |
245 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
246 | ||
ebf33b18 | 247 | if (!ironlake_edp_have_panel_power(intel_dp) && !ironlake_edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
248 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
249 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
453c5420 JB |
250 | I915_READ(pp_stat_reg), |
251 | I915_READ(pp_ctrl_reg)); | |
9b984dae KP |
252 | } |
253 | } | |
254 | ||
9ee32fea DV |
255 | static uint32_t |
256 | intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) | |
257 | { | |
258 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
259 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
260 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9ed35ab1 | 261 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; |
9ee32fea DV |
262 | uint32_t status; |
263 | bool done; | |
264 | ||
ef04f00d | 265 | #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
9ee32fea | 266 | if (has_aux_irq) |
b18ac466 | 267 | done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, |
3598706b | 268 | msecs_to_jiffies_timeout(10)); |
9ee32fea DV |
269 | else |
270 | done = wait_for_atomic(C, 10) == 0; | |
271 | if (!done) | |
272 | DRM_ERROR("dp aux hw did not signal timeout (has irq: %i)!\n", | |
273 | has_aux_irq); | |
274 | #undef C | |
275 | ||
276 | return status; | |
277 | } | |
278 | ||
bc86625a CW |
279 | static uint32_t get_aux_clock_divider(struct intel_dp *intel_dp, |
280 | int index) | |
a4fc5ed6 | 281 | { |
174edf1f PZ |
282 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
283 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 284 | struct drm_i915_private *dev_priv = dev->dev_private; |
9ee32fea | 285 | |
a4fc5ed6 | 286 | /* The clock divider is based off the hrawclk, |
fb0f8fbf KP |
287 | * and would like to run at 2MHz. So, take the |
288 | * hrawclk value and divide by 2 and use that | |
6176b8f9 JB |
289 | * |
290 | * Note that PCH attached eDP panels should use a 125MHz input | |
291 | * clock divider. | |
a4fc5ed6 | 292 | */ |
a62d0834 | 293 | if (IS_VALLEYVIEW(dev)) { |
bc86625a | 294 | return index ? 0 : 100; |
a62d0834 | 295 | } else if (intel_dig_port->port == PORT_A) { |
bc86625a CW |
296 | if (index) |
297 | return 0; | |
affa9354 | 298 | if (HAS_DDI(dev)) |
bc86625a | 299 | return DIV_ROUND_CLOSEST(intel_ddi_get_cdclk_freq(dev_priv), 2000); |
9473c8f4 | 300 | else if (IS_GEN6(dev) || IS_GEN7(dev)) |
b84a1cf8 | 301 | return 200; /* SNB & IVB eDP input clock at 400Mhz */ |
e3421a18 | 302 | else |
b84a1cf8 | 303 | return 225; /* eDP input clock at 450Mhz */ |
2c55c336 JN |
304 | } else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { |
305 | /* Workaround for non-ULT HSW */ | |
bc86625a CW |
306 | switch (index) { |
307 | case 0: return 63; | |
308 | case 1: return 72; | |
309 | default: return 0; | |
310 | } | |
2c55c336 | 311 | } else if (HAS_PCH_SPLIT(dev)) { |
bc86625a | 312 | return index ? 0 : DIV_ROUND_UP(intel_pch_rawclk(dev), 2); |
2c55c336 | 313 | } else { |
bc86625a | 314 | return index ? 0 :intel_hrawclk(dev) / 2; |
2c55c336 | 315 | } |
b84a1cf8 RV |
316 | } |
317 | ||
318 | static int | |
319 | intel_dp_aux_ch(struct intel_dp *intel_dp, | |
320 | uint8_t *send, int send_bytes, | |
321 | uint8_t *recv, int recv_size) | |
322 | { | |
323 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
324 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
325 | struct drm_i915_private *dev_priv = dev->dev_private; | |
326 | uint32_t ch_ctl = intel_dp->aux_ch_ctl_reg; | |
327 | uint32_t ch_data = ch_ctl + 4; | |
bc86625a | 328 | uint32_t aux_clock_divider; |
b84a1cf8 RV |
329 | int i, ret, recv_bytes; |
330 | uint32_t status; | |
bc86625a | 331 | int try, precharge, clock = 0; |
b84a1cf8 RV |
332 | bool has_aux_irq = INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev); |
333 | ||
334 | /* dp aux is extremely sensitive to irq latency, hence request the | |
335 | * lowest possible wakeup latency and so prevent the cpu from going into | |
336 | * deep sleep states. | |
337 | */ | |
338 | pm_qos_update_request(&dev_priv->pm_qos, 0); | |
339 | ||
340 | intel_dp_check_edp(intel_dp); | |
5eb08b69 | 341 | |
6b4e0a93 DV |
342 | if (IS_GEN6(dev)) |
343 | precharge = 3; | |
344 | else | |
345 | precharge = 5; | |
346 | ||
c67a470b PZ |
347 | intel_aux_display_runtime_get(dev_priv); |
348 | ||
11bee43e JB |
349 | /* Try to wait for any previous AUX channel activity */ |
350 | for (try = 0; try < 3; try++) { | |
ef04f00d | 351 | status = I915_READ_NOTRACE(ch_ctl); |
11bee43e JB |
352 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) |
353 | break; | |
354 | msleep(1); | |
355 | } | |
356 | ||
357 | if (try == 3) { | |
358 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
359 | I915_READ(ch_ctl)); | |
9ee32fea DV |
360 | ret = -EBUSY; |
361 | goto out; | |
4f7f7b7e CW |
362 | } |
363 | ||
bc86625a CW |
364 | while ((aux_clock_divider = get_aux_clock_divider(intel_dp, clock++))) { |
365 | /* Must try at least 3 times according to DP spec */ | |
366 | for (try = 0; try < 5; try++) { | |
367 | /* Load the send data into the aux channel data registers */ | |
368 | for (i = 0; i < send_bytes; i += 4) | |
369 | I915_WRITE(ch_data + i, | |
370 | pack_aux(send + i, send_bytes - i)); | |
371 | ||
372 | /* Send the command and wait for it to complete */ | |
373 | I915_WRITE(ch_ctl, | |
374 | DP_AUX_CH_CTL_SEND_BUSY | | |
375 | (has_aux_irq ? DP_AUX_CH_CTL_INTERRUPT : 0) | | |
376 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
377 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
378 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
379 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | | |
380 | DP_AUX_CH_CTL_DONE | | |
381 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
382 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
383 | ||
384 | status = intel_dp_aux_wait_done(intel_dp, has_aux_irq); | |
385 | ||
386 | /* Clear done status and any errors */ | |
387 | I915_WRITE(ch_ctl, | |
388 | status | | |
389 | DP_AUX_CH_CTL_DONE | | |
390 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
391 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
392 | ||
393 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
394 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
395 | continue; | |
396 | if (status & DP_AUX_CH_CTL_DONE) | |
397 | break; | |
398 | } | |
4f7f7b7e | 399 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
400 | break; |
401 | } | |
402 | ||
a4fc5ed6 | 403 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 404 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
9ee32fea DV |
405 | ret = -EBUSY; |
406 | goto out; | |
a4fc5ed6 KP |
407 | } |
408 | ||
409 | /* Check for timeout or receive error. | |
410 | * Timeouts occur when the sink is not connected | |
411 | */ | |
a5b3da54 | 412 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 413 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
9ee32fea DV |
414 | ret = -EIO; |
415 | goto out; | |
a5b3da54 | 416 | } |
1ae8c0a5 KP |
417 | |
418 | /* Timeouts occur when the device isn't connected, so they're | |
419 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 420 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 421 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
9ee32fea DV |
422 | ret = -ETIMEDOUT; |
423 | goto out; | |
a4fc5ed6 KP |
424 | } |
425 | ||
426 | /* Unload any bytes sent back from the other side */ | |
427 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
428 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
429 | if (recv_bytes > recv_size) |
430 | recv_bytes = recv_size; | |
0206e353 | 431 | |
4f7f7b7e CW |
432 | for (i = 0; i < recv_bytes; i += 4) |
433 | unpack_aux(I915_READ(ch_data + i), | |
434 | recv + i, recv_bytes - i); | |
a4fc5ed6 | 435 | |
9ee32fea DV |
436 | ret = recv_bytes; |
437 | out: | |
438 | pm_qos_update_request(&dev_priv->pm_qos, PM_QOS_DEFAULT_VALUE); | |
c67a470b | 439 | intel_aux_display_runtime_put(dev_priv); |
9ee32fea DV |
440 | |
441 | return ret; | |
a4fc5ed6 KP |
442 | } |
443 | ||
444 | /* Write data to the aux channel in native mode */ | |
445 | static int | |
ea5b213a | 446 | intel_dp_aux_native_write(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
447 | uint16_t address, uint8_t *send, int send_bytes) |
448 | { | |
449 | int ret; | |
450 | uint8_t msg[20]; | |
451 | int msg_bytes; | |
452 | uint8_t ack; | |
453 | ||
9b984dae | 454 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
455 | if (send_bytes > 16) |
456 | return -1; | |
457 | msg[0] = AUX_NATIVE_WRITE << 4; | |
458 | msg[1] = address >> 8; | |
eebc863e | 459 | msg[2] = address & 0xff; |
a4fc5ed6 KP |
460 | msg[3] = send_bytes - 1; |
461 | memcpy(&msg[4], send, send_bytes); | |
462 | msg_bytes = send_bytes + 4; | |
463 | for (;;) { | |
ea5b213a | 464 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1); |
a4fc5ed6 KP |
465 | if (ret < 0) |
466 | return ret; | |
467 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
468 | break; | |
469 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
470 | udelay(100); | |
471 | else | |
a5b3da54 | 472 | return -EIO; |
a4fc5ed6 KP |
473 | } |
474 | return send_bytes; | |
475 | } | |
476 | ||
477 | /* Write a single byte to the aux channel in native mode */ | |
478 | static int | |
ea5b213a | 479 | intel_dp_aux_native_write_1(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
480 | uint16_t address, uint8_t byte) |
481 | { | |
ea5b213a | 482 | return intel_dp_aux_native_write(intel_dp, address, &byte, 1); |
a4fc5ed6 KP |
483 | } |
484 | ||
485 | /* read bytes from a native aux channel */ | |
486 | static int | |
ea5b213a | 487 | intel_dp_aux_native_read(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
488 | uint16_t address, uint8_t *recv, int recv_bytes) |
489 | { | |
490 | uint8_t msg[4]; | |
491 | int msg_bytes; | |
492 | uint8_t reply[20]; | |
493 | int reply_bytes; | |
494 | uint8_t ack; | |
495 | int ret; | |
496 | ||
9b984dae | 497 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
498 | msg[0] = AUX_NATIVE_READ << 4; |
499 | msg[1] = address >> 8; | |
500 | msg[2] = address & 0xff; | |
501 | msg[3] = recv_bytes - 1; | |
502 | ||
503 | msg_bytes = 4; | |
504 | reply_bytes = recv_bytes + 1; | |
505 | ||
506 | for (;;) { | |
ea5b213a | 507 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, |
a4fc5ed6 | 508 | reply, reply_bytes); |
a5b3da54 KP |
509 | if (ret == 0) |
510 | return -EPROTO; | |
511 | if (ret < 0) | |
a4fc5ed6 KP |
512 | return ret; |
513 | ack = reply[0]; | |
514 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
515 | memcpy(recv, reply + 1, ret - 1); | |
516 | return ret - 1; | |
517 | } | |
518 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
519 | udelay(100); | |
520 | else | |
a5b3da54 | 521 | return -EIO; |
a4fc5ed6 KP |
522 | } |
523 | } | |
524 | ||
525 | static int | |
ab2c0672 DA |
526 | intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
527 | uint8_t write_byte, uint8_t *read_byte) | |
a4fc5ed6 | 528 | { |
ab2c0672 | 529 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
ea5b213a CW |
530 | struct intel_dp *intel_dp = container_of(adapter, |
531 | struct intel_dp, | |
532 | adapter); | |
ab2c0672 DA |
533 | uint16_t address = algo_data->address; |
534 | uint8_t msg[5]; | |
535 | uint8_t reply[2]; | |
8316f337 | 536 | unsigned retry; |
ab2c0672 DA |
537 | int msg_bytes; |
538 | int reply_bytes; | |
539 | int ret; | |
540 | ||
9b984dae | 541 | intel_dp_check_edp(intel_dp); |
ab2c0672 DA |
542 | /* Set up the command byte */ |
543 | if (mode & MODE_I2C_READ) | |
544 | msg[0] = AUX_I2C_READ << 4; | |
545 | else | |
546 | msg[0] = AUX_I2C_WRITE << 4; | |
547 | ||
548 | if (!(mode & MODE_I2C_STOP)) | |
549 | msg[0] |= AUX_I2C_MOT << 4; | |
a4fc5ed6 | 550 | |
ab2c0672 DA |
551 | msg[1] = address >> 8; |
552 | msg[2] = address; | |
553 | ||
554 | switch (mode) { | |
555 | case MODE_I2C_WRITE: | |
556 | msg[3] = 0; | |
557 | msg[4] = write_byte; | |
558 | msg_bytes = 5; | |
559 | reply_bytes = 1; | |
560 | break; | |
561 | case MODE_I2C_READ: | |
562 | msg[3] = 0; | |
563 | msg_bytes = 4; | |
564 | reply_bytes = 2; | |
565 | break; | |
566 | default: | |
567 | msg_bytes = 3; | |
568 | reply_bytes = 1; | |
569 | break; | |
570 | } | |
571 | ||
8316f337 DF |
572 | for (retry = 0; retry < 5; retry++) { |
573 | ret = intel_dp_aux_ch(intel_dp, | |
574 | msg, msg_bytes, | |
575 | reply, reply_bytes); | |
ab2c0672 | 576 | if (ret < 0) { |
3ff99164 | 577 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); |
ab2c0672 DA |
578 | return ret; |
579 | } | |
8316f337 DF |
580 | |
581 | switch (reply[0] & AUX_NATIVE_REPLY_MASK) { | |
582 | case AUX_NATIVE_REPLY_ACK: | |
583 | /* I2C-over-AUX Reply field is only valid | |
584 | * when paired with AUX ACK. | |
585 | */ | |
586 | break; | |
587 | case AUX_NATIVE_REPLY_NACK: | |
588 | DRM_DEBUG_KMS("aux_ch native nack\n"); | |
589 | return -EREMOTEIO; | |
590 | case AUX_NATIVE_REPLY_DEFER: | |
8d16f258 JN |
591 | /* |
592 | * For now, just give more slack to branch devices. We | |
593 | * could check the DPCD for I2C bit rate capabilities, | |
594 | * and if available, adjust the interval. We could also | |
595 | * be more careful with DP-to-Legacy adapters where a | |
596 | * long legacy cable may force very low I2C bit rates. | |
597 | */ | |
598 | if (intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
599 | DP_DWN_STRM_PORT_PRESENT) | |
600 | usleep_range(500, 600); | |
601 | else | |
602 | usleep_range(300, 400); | |
8316f337 DF |
603 | continue; |
604 | default: | |
605 | DRM_ERROR("aux_ch invalid native reply 0x%02x\n", | |
606 | reply[0]); | |
607 | return -EREMOTEIO; | |
608 | } | |
609 | ||
ab2c0672 DA |
610 | switch (reply[0] & AUX_I2C_REPLY_MASK) { |
611 | case AUX_I2C_REPLY_ACK: | |
612 | if (mode == MODE_I2C_READ) { | |
613 | *read_byte = reply[1]; | |
614 | } | |
615 | return reply_bytes - 1; | |
616 | case AUX_I2C_REPLY_NACK: | |
8316f337 | 617 | DRM_DEBUG_KMS("aux_i2c nack\n"); |
ab2c0672 DA |
618 | return -EREMOTEIO; |
619 | case AUX_I2C_REPLY_DEFER: | |
8316f337 | 620 | DRM_DEBUG_KMS("aux_i2c defer\n"); |
ab2c0672 DA |
621 | udelay(100); |
622 | break; | |
623 | default: | |
8316f337 | 624 | DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]); |
ab2c0672 DA |
625 | return -EREMOTEIO; |
626 | } | |
627 | } | |
8316f337 DF |
628 | |
629 | DRM_ERROR("too many retries, giving up\n"); | |
630 | return -EREMOTEIO; | |
a4fc5ed6 KP |
631 | } |
632 | ||
633 | static int | |
ea5b213a | 634 | intel_dp_i2c_init(struct intel_dp *intel_dp, |
55f78c43 | 635 | struct intel_connector *intel_connector, const char *name) |
a4fc5ed6 | 636 | { |
0b5c541b KP |
637 | int ret; |
638 | ||
d54e9d28 | 639 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
ea5b213a CW |
640 | intel_dp->algo.running = false; |
641 | intel_dp->algo.address = 0; | |
642 | intel_dp->algo.aux_ch = intel_dp_i2c_aux_ch; | |
643 | ||
0206e353 | 644 | memset(&intel_dp->adapter, '\0', sizeof(intel_dp->adapter)); |
ea5b213a CW |
645 | intel_dp->adapter.owner = THIS_MODULE; |
646 | intel_dp->adapter.class = I2C_CLASS_DDC; | |
0206e353 | 647 | strncpy(intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1); |
ea5b213a CW |
648 | intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0'; |
649 | intel_dp->adapter.algo_data = &intel_dp->algo; | |
650 | intel_dp->adapter.dev.parent = &intel_connector->base.kdev; | |
651 | ||
0b5c541b KP |
652 | ironlake_edp_panel_vdd_on(intel_dp); |
653 | ret = i2c_dp_aux_add_bus(&intel_dp->adapter); | |
bd943159 | 654 | ironlake_edp_panel_vdd_off(intel_dp, false); |
0b5c541b | 655 | return ret; |
a4fc5ed6 KP |
656 | } |
657 | ||
c6bb3538 DV |
658 | static void |
659 | intel_dp_set_clock(struct intel_encoder *encoder, | |
660 | struct intel_crtc_config *pipe_config, int link_bw) | |
661 | { | |
662 | struct drm_device *dev = encoder->base.dev; | |
663 | ||
664 | if (IS_G4X(dev)) { | |
665 | if (link_bw == DP_LINK_BW_1_62) { | |
666 | pipe_config->dpll.p1 = 2; | |
667 | pipe_config->dpll.p2 = 10; | |
668 | pipe_config->dpll.n = 2; | |
669 | pipe_config->dpll.m1 = 23; | |
670 | pipe_config->dpll.m2 = 8; | |
671 | } else { | |
672 | pipe_config->dpll.p1 = 1; | |
673 | pipe_config->dpll.p2 = 10; | |
674 | pipe_config->dpll.n = 1; | |
675 | pipe_config->dpll.m1 = 14; | |
676 | pipe_config->dpll.m2 = 2; | |
677 | } | |
678 | pipe_config->clock_set = true; | |
679 | } else if (IS_HASWELL(dev)) { | |
680 | /* Haswell has special-purpose DP DDI clocks. */ | |
681 | } else if (HAS_PCH_SPLIT(dev)) { | |
682 | if (link_bw == DP_LINK_BW_1_62) { | |
683 | pipe_config->dpll.n = 1; | |
684 | pipe_config->dpll.p1 = 2; | |
685 | pipe_config->dpll.p2 = 10; | |
686 | pipe_config->dpll.m1 = 12; | |
687 | pipe_config->dpll.m2 = 9; | |
688 | } else { | |
689 | pipe_config->dpll.n = 2; | |
690 | pipe_config->dpll.p1 = 1; | |
691 | pipe_config->dpll.p2 = 10; | |
692 | pipe_config->dpll.m1 = 14; | |
693 | pipe_config->dpll.m2 = 8; | |
694 | } | |
695 | pipe_config->clock_set = true; | |
696 | } else if (IS_VALLEYVIEW(dev)) { | |
697 | /* FIXME: Need to figure out optimized DP clocks for vlv. */ | |
698 | } | |
699 | } | |
700 | ||
00c09d70 | 701 | bool |
5bfe2ac0 DV |
702 | intel_dp_compute_config(struct intel_encoder *encoder, |
703 | struct intel_crtc_config *pipe_config) | |
a4fc5ed6 | 704 | { |
5bfe2ac0 | 705 | struct drm_device *dev = encoder->base.dev; |
36008365 | 706 | struct drm_i915_private *dev_priv = dev->dev_private; |
5bfe2ac0 | 707 | struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; |
5bfe2ac0 | 708 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 709 | enum port port = dp_to_dig_port(intel_dp)->port; |
2dd24552 | 710 | struct intel_crtc *intel_crtc = encoder->new_crtc; |
dd06f90e | 711 | struct intel_connector *intel_connector = intel_dp->attached_connector; |
a4fc5ed6 | 712 | int lane_count, clock; |
397fe157 | 713 | int max_lane_count = drm_dp_max_lane_count(intel_dp->dpcd); |
ea5b213a | 714 | int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; |
083f9560 | 715 | int bpp, mode_rate; |
a4fc5ed6 | 716 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
ff9a6750 | 717 | int link_avail, link_clock; |
a4fc5ed6 | 718 | |
bc7d38a4 | 719 | if (HAS_PCH_SPLIT(dev) && !HAS_DDI(dev) && port != PORT_A) |
5bfe2ac0 DV |
720 | pipe_config->has_pch_encoder = true; |
721 | ||
03afc4a2 | 722 | pipe_config->has_dp_encoder = true; |
a4fc5ed6 | 723 | |
dd06f90e JN |
724 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
725 | intel_fixed_panel_mode(intel_connector->panel.fixed_mode, | |
726 | adjusted_mode); | |
2dd24552 JB |
727 | if (!HAS_PCH_SPLIT(dev)) |
728 | intel_gmch_panel_fitting(intel_crtc, pipe_config, | |
729 | intel_connector->panel.fitting_mode); | |
730 | else | |
b074cec8 JB |
731 | intel_pch_panel_fitting(intel_crtc, pipe_config, |
732 | intel_connector->panel.fitting_mode); | |
0d3a1bee ZY |
733 | } |
734 | ||
cb1793ce | 735 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
736 | return false; |
737 | ||
083f9560 DV |
738 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
739 | "max bw %02x pixel clock %iKHz\n", | |
71244653 | 740 | max_lane_count, bws[max_clock], adjusted_mode->clock); |
083f9560 | 741 | |
36008365 DV |
742 | /* Walk through all bpp values. Luckily they're all nicely spaced with 2 |
743 | * bpc in between. */ | |
3e7ca985 | 744 | bpp = pipe_config->pipe_bpp; |
7984211e ID |
745 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp) { |
746 | DRM_DEBUG_KMS("clamping bpp for eDP panel to BIOS-provided %i\n", | |
747 | dev_priv->vbt.edp_bpp); | |
e1b73cba | 748 | bpp = min_t(int, bpp, dev_priv->vbt.edp_bpp); |
7984211e | 749 | } |
657445fe | 750 | |
36008365 | 751 | for (; bpp >= 6*3; bpp -= 2*3) { |
ff9a6750 | 752 | mode_rate = intel_dp_link_required(adjusted_mode->clock, bpp); |
36008365 DV |
753 | |
754 | for (clock = 0; clock <= max_clock; clock++) { | |
755 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
756 | link_clock = drm_dp_bw_code_to_link_rate(bws[clock]); | |
757 | link_avail = intel_dp_max_data_rate(link_clock, | |
758 | lane_count); | |
759 | ||
760 | if (mode_rate <= link_avail) { | |
761 | goto found; | |
762 | } | |
763 | } | |
764 | } | |
765 | } | |
c4867936 | 766 | |
36008365 | 767 | return false; |
3685a8f3 | 768 | |
36008365 | 769 | found: |
55bc60db VS |
770 | if (intel_dp->color_range_auto) { |
771 | /* | |
772 | * See: | |
773 | * CEA-861-E - 5.1 Default Encoding Parameters | |
774 | * VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry | |
775 | */ | |
18316c8c | 776 | if (bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1) |
55bc60db VS |
777 | intel_dp->color_range = DP_COLOR_RANGE_16_235; |
778 | else | |
779 | intel_dp->color_range = 0; | |
780 | } | |
781 | ||
3685a8f3 | 782 | if (intel_dp->color_range) |
50f3b016 | 783 | pipe_config->limited_color_range = true; |
a4fc5ed6 | 784 | |
36008365 DV |
785 | intel_dp->link_bw = bws[clock]; |
786 | intel_dp->lane_count = lane_count; | |
657445fe | 787 | pipe_config->pipe_bpp = bpp; |
ff9a6750 | 788 | pipe_config->port_clock = drm_dp_bw_code_to_link_rate(intel_dp->link_bw); |
a4fc5ed6 | 789 | |
36008365 DV |
790 | DRM_DEBUG_KMS("DP link bw %02x lane count %d clock %d bpp %d\n", |
791 | intel_dp->link_bw, intel_dp->lane_count, | |
ff9a6750 | 792 | pipe_config->port_clock, bpp); |
36008365 DV |
793 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", |
794 | mode_rate, link_avail); | |
a4fc5ed6 | 795 | |
03afc4a2 | 796 | intel_link_compute_m_n(bpp, lane_count, |
ff9a6750 | 797 | adjusted_mode->clock, pipe_config->port_clock, |
03afc4a2 | 798 | &pipe_config->dp_m_n); |
9d1a455b | 799 | |
c6bb3538 DV |
800 | intel_dp_set_clock(encoder, pipe_config, intel_dp->link_bw); |
801 | ||
03afc4a2 | 802 | return true; |
a4fc5ed6 KP |
803 | } |
804 | ||
247d89f6 PZ |
805 | void intel_dp_init_link_config(struct intel_dp *intel_dp) |
806 | { | |
807 | memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); | |
808 | intel_dp->link_configuration[0] = intel_dp->link_bw; | |
809 | intel_dp->link_configuration[1] = intel_dp->lane_count; | |
810 | intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; | |
811 | /* | |
812 | * Check for DPCD version > 1.1 and enhanced framing support | |
813 | */ | |
814 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
815 | (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { | |
816 | intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; | |
817 | } | |
818 | } | |
819 | ||
7c62a164 | 820 | static void ironlake_set_pll_cpu_edp(struct intel_dp *intel_dp) |
ea9b6006 | 821 | { |
7c62a164 DV |
822 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); |
823 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
824 | struct drm_device *dev = crtc->base.dev; | |
ea9b6006 DV |
825 | struct drm_i915_private *dev_priv = dev->dev_private; |
826 | u32 dpa_ctl; | |
827 | ||
ff9a6750 | 828 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", crtc->config.port_clock); |
ea9b6006 DV |
829 | dpa_ctl = I915_READ(DP_A); |
830 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
831 | ||
ff9a6750 | 832 | if (crtc->config.port_clock == 162000) { |
1ce17038 DV |
833 | /* For a long time we've carried around a ILK-DevA w/a for the |
834 | * 160MHz clock. If we're really unlucky, it's still required. | |
835 | */ | |
836 | DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n"); | |
ea9b6006 | 837 | dpa_ctl |= DP_PLL_FREQ_160MHZ; |
7c62a164 | 838 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; |
ea9b6006 DV |
839 | } else { |
840 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
7c62a164 | 841 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; |
ea9b6006 | 842 | } |
1ce17038 | 843 | |
ea9b6006 DV |
844 | I915_WRITE(DP_A, dpa_ctl); |
845 | ||
846 | POSTING_READ(DP_A); | |
847 | udelay(500); | |
848 | } | |
849 | ||
b934223d | 850 | static void intel_dp_mode_set(struct intel_encoder *encoder) |
a4fc5ed6 | 851 | { |
b934223d | 852 | struct drm_device *dev = encoder->base.dev; |
417e822d | 853 | struct drm_i915_private *dev_priv = dev->dev_private; |
b934223d | 854 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 855 | enum port port = dp_to_dig_port(intel_dp)->port; |
b934223d DV |
856 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
857 | struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode; | |
a4fc5ed6 | 858 | |
417e822d | 859 | /* |
1a2eb460 | 860 | * There are four kinds of DP registers: |
417e822d KP |
861 | * |
862 | * IBX PCH | |
1a2eb460 KP |
863 | * SNB CPU |
864 | * IVB CPU | |
417e822d KP |
865 | * CPT PCH |
866 | * | |
867 | * IBX PCH and CPU are the same for almost everything, | |
868 | * except that the CPU DP PLL is configured in this | |
869 | * register | |
870 | * | |
871 | * CPT PCH is quite different, having many bits moved | |
872 | * to the TRANS_DP_CTL register instead. That | |
873 | * configuration happens (oddly) in ironlake_pch_enable | |
874 | */ | |
9c9e7927 | 875 | |
417e822d KP |
876 | /* Preserve the BIOS-computed detected bit. This is |
877 | * supposed to be read-only. | |
878 | */ | |
879 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 880 | |
417e822d | 881 | /* Handle DP bits in common between all three register formats */ |
417e822d | 882 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
17aa6be9 | 883 | intel_dp->DP |= DP_PORT_WIDTH(intel_dp->lane_count); |
a4fc5ed6 | 884 | |
e0dac65e WF |
885 | if (intel_dp->has_audio) { |
886 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", | |
7c62a164 | 887 | pipe_name(crtc->pipe)); |
ea5b213a | 888 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
b934223d | 889 | intel_write_eld(&encoder->base, adjusted_mode); |
e0dac65e | 890 | } |
247d89f6 PZ |
891 | |
892 | intel_dp_init_link_config(intel_dp); | |
a4fc5ed6 | 893 | |
417e822d | 894 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 895 | |
bc7d38a4 | 896 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
1a2eb460 KP |
897 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
898 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
899 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
900 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
901 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
902 | ||
903 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
904 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
905 | ||
7c62a164 | 906 | intel_dp->DP |= crtc->pipe << 29; |
bc7d38a4 | 907 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
b2634017 | 908 | if (!HAS_PCH_SPLIT(dev) && !IS_VALLEYVIEW(dev)) |
3685a8f3 | 909 | intel_dp->DP |= intel_dp->color_range; |
417e822d KP |
910 | |
911 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
912 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
913 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
914 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
915 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
916 | ||
917 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
918 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
919 | ||
7c62a164 | 920 | if (crtc->pipe == 1) |
417e822d | 921 | intel_dp->DP |= DP_PIPEB_SELECT; |
417e822d KP |
922 | } else { |
923 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 924 | } |
ea9b6006 | 925 | |
bc7d38a4 | 926 | if (port == PORT_A && !IS_VALLEYVIEW(dev)) |
7c62a164 | 927 | ironlake_set_pll_cpu_edp(intel_dp); |
a4fc5ed6 KP |
928 | } |
929 | ||
99ea7127 KP |
930 | #define IDLE_ON_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
931 | #define IDLE_ON_VALUE (PP_ON | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
932 | ||
933 | #define IDLE_OFF_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) | |
934 | #define IDLE_OFF_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
935 | ||
936 | #define IDLE_CYCLE_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) | |
937 | #define IDLE_CYCLE_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
938 | ||
939 | static void ironlake_wait_panel_status(struct intel_dp *intel_dp, | |
940 | u32 mask, | |
941 | u32 value) | |
bd943159 | 942 | { |
30add22d | 943 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
99ea7127 | 944 | struct drm_i915_private *dev_priv = dev->dev_private; |
453c5420 JB |
945 | u32 pp_stat_reg, pp_ctrl_reg; |
946 | ||
947 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; | |
948 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
32ce697c | 949 | |
99ea7127 | 950 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
453c5420 JB |
951 | mask, value, |
952 | I915_READ(pp_stat_reg), | |
953 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 954 | |
453c5420 | 955 | if (_wait_for((I915_READ(pp_stat_reg) & mask) == value, 5000, 10)) { |
99ea7127 | 956 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", |
453c5420 JB |
957 | I915_READ(pp_stat_reg), |
958 | I915_READ(pp_ctrl_reg)); | |
32ce697c | 959 | } |
99ea7127 | 960 | } |
32ce697c | 961 | |
99ea7127 KP |
962 | static void ironlake_wait_panel_on(struct intel_dp *intel_dp) |
963 | { | |
964 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
965 | ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); | |
bd943159 KP |
966 | } |
967 | ||
99ea7127 KP |
968 | static void ironlake_wait_panel_off(struct intel_dp *intel_dp) |
969 | { | |
970 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
971 | ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); | |
972 | } | |
973 | ||
974 | static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp) | |
975 | { | |
976 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
977 | ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); | |
978 | } | |
979 | ||
980 | ||
832dd3c1 KP |
981 | /* Read the current pp_control value, unlocking the register if it |
982 | * is locked | |
983 | */ | |
984 | ||
453c5420 | 985 | static u32 ironlake_get_pp_control(struct intel_dp *intel_dp) |
832dd3c1 | 986 | { |
453c5420 JB |
987 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
988 | struct drm_i915_private *dev_priv = dev->dev_private; | |
989 | u32 control; | |
990 | u32 pp_ctrl_reg; | |
991 | ||
992 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
993 | control = I915_READ(pp_ctrl_reg); | |
832dd3c1 KP |
994 | |
995 | control &= ~PANEL_UNLOCK_MASK; | |
996 | control |= PANEL_UNLOCK_REGS; | |
997 | return control; | |
bd943159 KP |
998 | } |
999 | ||
82a4d9c0 | 1000 | void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) |
5d613501 | 1001 | { |
30add22d | 1002 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1003 | struct drm_i915_private *dev_priv = dev->dev_private; |
1004 | u32 pp; | |
453c5420 | 1005 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1006 | |
97af61f5 KP |
1007 | if (!is_edp(intel_dp)) |
1008 | return; | |
f01eca2e | 1009 | DRM_DEBUG_KMS("Turn eDP VDD on\n"); |
5d613501 | 1010 | |
bd943159 KP |
1011 | WARN(intel_dp->want_panel_vdd, |
1012 | "eDP VDD already requested on\n"); | |
1013 | ||
1014 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 1015 | |
bd943159 KP |
1016 | if (ironlake_edp_have_panel_vdd(intel_dp)) { |
1017 | DRM_DEBUG_KMS("eDP VDD already on\n"); | |
1018 | return; | |
1019 | } | |
1020 | ||
99ea7127 KP |
1021 | if (!ironlake_edp_have_panel_power(intel_dp)) |
1022 | ironlake_wait_panel_power_cycle(intel_dp); | |
1023 | ||
453c5420 | 1024 | pp = ironlake_get_pp_control(intel_dp); |
5d613501 | 1025 | pp |= EDP_FORCE_VDD; |
ebf33b18 | 1026 | |
453c5420 JB |
1027 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
1028 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1029 | ||
1030 | I915_WRITE(pp_ctrl_reg, pp); | |
1031 | POSTING_READ(pp_ctrl_reg); | |
1032 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1033 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
ebf33b18 KP |
1034 | /* |
1035 | * If the panel wasn't on, delay before accessing aux channel | |
1036 | */ | |
1037 | if (!ironlake_edp_have_panel_power(intel_dp)) { | |
bd943159 | 1038 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1039 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1040 | } |
5d613501 JB |
1041 | } |
1042 | ||
bd943159 | 1043 | static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 | 1044 | { |
30add22d | 1045 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
5d613501 JB |
1046 | struct drm_i915_private *dev_priv = dev->dev_private; |
1047 | u32 pp; | |
453c5420 | 1048 | u32 pp_stat_reg, pp_ctrl_reg; |
5d613501 | 1049 | |
a0e99e68 DV |
1050 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
1051 | ||
bd943159 | 1052 | if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) { |
453c5420 | 1053 | pp = ironlake_get_pp_control(intel_dp); |
bd943159 | 1054 | pp &= ~EDP_FORCE_VDD; |
bd943159 | 1055 | |
453c5420 JB |
1056 | pp_stat_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_STATUS : PCH_PP_STATUS; |
1057 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1058 | ||
1059 | I915_WRITE(pp_ctrl_reg, pp); | |
1060 | POSTING_READ(pp_ctrl_reg); | |
99ea7127 | 1061 | |
453c5420 JB |
1062 | /* Make sure sequencer is idle before allowing subsequent activity */ |
1063 | DRM_DEBUG_KMS("PP_STATUS: 0x%08x PP_CONTROL: 0x%08x\n", | |
1064 | I915_READ(pp_stat_reg), I915_READ(pp_ctrl_reg)); | |
99ea7127 | 1065 | msleep(intel_dp->panel_power_down_delay); |
bd943159 KP |
1066 | } |
1067 | } | |
5d613501 | 1068 | |
bd943159 KP |
1069 | static void ironlake_panel_vdd_work(struct work_struct *__work) |
1070 | { | |
1071 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1072 | struct intel_dp, panel_vdd_work); | |
30add22d | 1073 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bd943159 | 1074 | |
627f7675 | 1075 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 1076 | ironlake_panel_vdd_off_sync(intel_dp); |
627f7675 | 1077 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 KP |
1078 | } |
1079 | ||
82a4d9c0 | 1080 | void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) |
bd943159 | 1081 | { |
97af61f5 KP |
1082 | if (!is_edp(intel_dp)) |
1083 | return; | |
5d613501 | 1084 | |
bd943159 KP |
1085 | DRM_DEBUG_KMS("Turn eDP VDD off %d\n", intel_dp->want_panel_vdd); |
1086 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); | |
f2e8b18a | 1087 | |
bd943159 KP |
1088 | intel_dp->want_panel_vdd = false; |
1089 | ||
1090 | if (sync) { | |
1091 | ironlake_panel_vdd_off_sync(intel_dp); | |
1092 | } else { | |
1093 | /* | |
1094 | * Queue the timer to fire a long | |
1095 | * time from now (relative to the power down delay) | |
1096 | * to keep the panel power up across a sequence of operations | |
1097 | */ | |
1098 | schedule_delayed_work(&intel_dp->panel_vdd_work, | |
1099 | msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5)); | |
1100 | } | |
5d613501 JB |
1101 | } |
1102 | ||
82a4d9c0 | 1103 | void ironlake_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1104 | { |
30add22d | 1105 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1106 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1107 | u32 pp; |
453c5420 | 1108 | u32 pp_ctrl_reg; |
9934c132 | 1109 | |
97af61f5 | 1110 | if (!is_edp(intel_dp)) |
bd943159 | 1111 | return; |
99ea7127 KP |
1112 | |
1113 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1114 | ||
1115 | if (ironlake_edp_have_panel_power(intel_dp)) { | |
1116 | DRM_DEBUG_KMS("eDP power already on\n"); | |
7d639f35 | 1117 | return; |
99ea7127 | 1118 | } |
9934c132 | 1119 | |
99ea7127 | 1120 | ironlake_wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1121 | |
453c5420 | 1122 | pp = ironlake_get_pp_control(intel_dp); |
05ce1a49 KP |
1123 | if (IS_GEN5(dev)) { |
1124 | /* ILK workaround: disable reset around power sequence */ | |
1125 | pp &= ~PANEL_POWER_RESET; | |
1126 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1127 | POSTING_READ(PCH_PP_CONTROL); | |
1128 | } | |
37c6c9b0 | 1129 | |
1c0ae80a | 1130 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1131 | if (!IS_GEN5(dev)) |
1132 | pp |= PANEL_POWER_RESET; | |
1133 | ||
453c5420 JB |
1134 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; |
1135 | ||
1136 | I915_WRITE(pp_ctrl_reg, pp); | |
1137 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1138 | |
99ea7127 | 1139 | ironlake_wait_panel_on(intel_dp); |
9934c132 | 1140 | |
05ce1a49 KP |
1141 | if (IS_GEN5(dev)) { |
1142 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
1143 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1144 | POSTING_READ(PCH_PP_CONTROL); | |
1145 | } | |
9934c132 JB |
1146 | } |
1147 | ||
82a4d9c0 | 1148 | void ironlake_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1149 | { |
30add22d | 1150 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
9934c132 | 1151 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1152 | u32 pp; |
453c5420 | 1153 | u32 pp_ctrl_reg; |
9934c132 | 1154 | |
97af61f5 KP |
1155 | if (!is_edp(intel_dp)) |
1156 | return; | |
37c6c9b0 | 1157 | |
99ea7127 | 1158 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1159 | |
6cb49835 | 1160 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
37c6c9b0 | 1161 | |
453c5420 | 1162 | pp = ironlake_get_pp_control(intel_dp); |
35a38556 DV |
1163 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1164 | * panels get very unhappy and cease to work. */ | |
1165 | pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE); | |
453c5420 JB |
1166 | |
1167 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1168 | ||
1169 | I915_WRITE(pp_ctrl_reg, pp); | |
1170 | POSTING_READ(pp_ctrl_reg); | |
9934c132 | 1171 | |
35a38556 DV |
1172 | intel_dp->want_panel_vdd = false; |
1173 | ||
99ea7127 | 1174 | ironlake_wait_panel_off(intel_dp); |
9934c132 JB |
1175 | } |
1176 | ||
d6c50ff8 | 1177 | void ironlake_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1178 | { |
da63a9f2 PZ |
1179 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1180 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
32f9d658 | 1181 | struct drm_i915_private *dev_priv = dev->dev_private; |
da63a9f2 | 1182 | int pipe = to_intel_crtc(intel_dig_port->base.base.crtc)->pipe; |
32f9d658 | 1183 | u32 pp; |
453c5420 | 1184 | u32 pp_ctrl_reg; |
32f9d658 | 1185 | |
f01eca2e KP |
1186 | if (!is_edp(intel_dp)) |
1187 | return; | |
1188 | ||
28c97730 | 1189 | DRM_DEBUG_KMS("\n"); |
01cb9ea6 JB |
1190 | /* |
1191 | * If we enable the backlight right away following a panel power | |
1192 | * on, we may see slight flicker as the panel syncs with the eDP | |
1193 | * link. So delay a bit to make sure the image is solid before | |
1194 | * allowing it to appear. | |
1195 | */ | |
f01eca2e | 1196 | msleep(intel_dp->backlight_on_delay); |
453c5420 | 1197 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1198 | pp |= EDP_BLC_ENABLE; |
453c5420 JB |
1199 | |
1200 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1201 | ||
1202 | I915_WRITE(pp_ctrl_reg, pp); | |
1203 | POSTING_READ(pp_ctrl_reg); | |
035aa3de DV |
1204 | |
1205 | intel_panel_enable_backlight(dev, pipe); | |
32f9d658 ZW |
1206 | } |
1207 | ||
d6c50ff8 | 1208 | void ironlake_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1209 | { |
30add22d | 1210 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
32f9d658 ZW |
1211 | struct drm_i915_private *dev_priv = dev->dev_private; |
1212 | u32 pp; | |
453c5420 | 1213 | u32 pp_ctrl_reg; |
32f9d658 | 1214 | |
f01eca2e KP |
1215 | if (!is_edp(intel_dp)) |
1216 | return; | |
1217 | ||
035aa3de DV |
1218 | intel_panel_disable_backlight(dev); |
1219 | ||
28c97730 | 1220 | DRM_DEBUG_KMS("\n"); |
453c5420 | 1221 | pp = ironlake_get_pp_control(intel_dp); |
32f9d658 | 1222 | pp &= ~EDP_BLC_ENABLE; |
453c5420 JB |
1223 | |
1224 | pp_ctrl_reg = IS_VALLEYVIEW(dev) ? PIPEA_PP_CONTROL : PCH_PP_CONTROL; | |
1225 | ||
1226 | I915_WRITE(pp_ctrl_reg, pp); | |
1227 | POSTING_READ(pp_ctrl_reg); | |
f01eca2e | 1228 | msleep(intel_dp->backlight_off_delay); |
32f9d658 | 1229 | } |
a4fc5ed6 | 1230 | |
2bd2ad64 | 1231 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1232 | { |
da63a9f2 PZ |
1233 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1234 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1235 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1236 | struct drm_i915_private *dev_priv = dev->dev_private; |
1237 | u32 dpa_ctl; | |
1238 | ||
2bd2ad64 DV |
1239 | assert_pipe_disabled(dev_priv, |
1240 | to_intel_crtc(crtc)->pipe); | |
1241 | ||
d240f20f JB |
1242 | DRM_DEBUG_KMS("\n"); |
1243 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1244 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1245 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1246 | ||
1247 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1248 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1249 | * enable bits here to ensure that we don't enable too much. */ | |
1250 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1251 | intel_dp->DP |= DP_PLL_ENABLE; | |
1252 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1253 | POSTING_READ(DP_A); |
1254 | udelay(200); | |
d240f20f JB |
1255 | } |
1256 | ||
2bd2ad64 | 1257 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1258 | { |
da63a9f2 PZ |
1259 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
1260 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; | |
1261 | struct drm_device *dev = crtc->dev; | |
d240f20f JB |
1262 | struct drm_i915_private *dev_priv = dev->dev_private; |
1263 | u32 dpa_ctl; | |
1264 | ||
2bd2ad64 DV |
1265 | assert_pipe_disabled(dev_priv, |
1266 | to_intel_crtc(crtc)->pipe); | |
1267 | ||
d240f20f | 1268 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1269 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1270 | "dp pll off, should be on\n"); | |
1271 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1272 | ||
1273 | /* We can't rely on the value tracked for the DP register in | |
1274 | * intel_dp->DP because link_down must not change that (otherwise link | |
1275 | * re-training will fail. */ | |
298b0b39 | 1276 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1277 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1278 | POSTING_READ(DP_A); |
d240f20f JB |
1279 | udelay(200); |
1280 | } | |
1281 | ||
c7ad3810 | 1282 | /* If the sink supports it, try to set the power state appropriately */ |
c19b0669 | 1283 | void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) |
c7ad3810 JB |
1284 | { |
1285 | int ret, i; | |
1286 | ||
1287 | /* Should have a valid DPCD by this point */ | |
1288 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1289 | return; | |
1290 | ||
1291 | if (mode != DRM_MODE_DPMS_ON) { | |
1292 | ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER, | |
1293 | DP_SET_POWER_D3); | |
1294 | if (ret != 1) | |
1295 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1296 | } else { | |
1297 | /* | |
1298 | * When turning on, we need to retry for 1ms to give the sink | |
1299 | * time to wake up. | |
1300 | */ | |
1301 | for (i = 0; i < 3; i++) { | |
1302 | ret = intel_dp_aux_native_write_1(intel_dp, | |
1303 | DP_SET_POWER, | |
1304 | DP_SET_POWER_D0); | |
1305 | if (ret == 1) | |
1306 | break; | |
1307 | msleep(1); | |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | ||
19d8fe15 DV |
1312 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1313 | enum pipe *pipe) | |
d240f20f | 1314 | { |
19d8fe15 | 1315 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1316 | enum port port = dp_to_dig_port(intel_dp)->port; |
19d8fe15 DV |
1317 | struct drm_device *dev = encoder->base.dev; |
1318 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1319 | u32 tmp = I915_READ(intel_dp->output_reg); | |
1320 | ||
1321 | if (!(tmp & DP_PORT_EN)) | |
1322 | return false; | |
1323 | ||
bc7d38a4 | 1324 | if (port == PORT_A && IS_GEN7(dev) && !IS_VALLEYVIEW(dev)) { |
19d8fe15 | 1325 | *pipe = PORT_TO_PIPE_CPT(tmp); |
bc7d38a4 | 1326 | } else if (!HAS_PCH_CPT(dev) || port == PORT_A) { |
19d8fe15 DV |
1327 | *pipe = PORT_TO_PIPE(tmp); |
1328 | } else { | |
1329 | u32 trans_sel; | |
1330 | u32 trans_dp; | |
1331 | int i; | |
1332 | ||
1333 | switch (intel_dp->output_reg) { | |
1334 | case PCH_DP_B: | |
1335 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1336 | break; | |
1337 | case PCH_DP_C: | |
1338 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1339 | break; | |
1340 | case PCH_DP_D: | |
1341 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1342 | break; | |
1343 | default: | |
1344 | return true; | |
1345 | } | |
1346 | ||
1347 | for_each_pipe(i) { | |
1348 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1349 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1350 | *pipe = i; | |
1351 | return true; | |
1352 | } | |
1353 | } | |
19d8fe15 | 1354 | |
4a0833ec DV |
1355 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", |
1356 | intel_dp->output_reg); | |
1357 | } | |
d240f20f | 1358 | |
19d8fe15 DV |
1359 | return true; |
1360 | } | |
d240f20f | 1361 | |
045ac3b5 JB |
1362 | static void intel_dp_get_config(struct intel_encoder *encoder, |
1363 | struct intel_crtc_config *pipe_config) | |
1364 | { | |
1365 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
045ac3b5 | 1366 | u32 tmp, flags = 0; |
63000ef6 XZ |
1367 | struct drm_device *dev = encoder->base.dev; |
1368 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1369 | enum port port = dp_to_dig_port(intel_dp)->port; | |
1370 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); | |
045ac3b5 | 1371 | |
63000ef6 XZ |
1372 | if ((port == PORT_A) || !HAS_PCH_CPT(dev)) { |
1373 | tmp = I915_READ(intel_dp->output_reg); | |
1374 | if (tmp & DP_SYNC_HS_HIGH) | |
1375 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1376 | else | |
1377 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1378 | |
63000ef6 XZ |
1379 | if (tmp & DP_SYNC_VS_HIGH) |
1380 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1381 | else | |
1382 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1383 | } else { | |
1384 | tmp = I915_READ(TRANS_DP_CTL(crtc->pipe)); | |
1385 | if (tmp & TRANS_DP_HSYNC_ACTIVE_HIGH) | |
1386 | flags |= DRM_MODE_FLAG_PHSYNC; | |
1387 | else | |
1388 | flags |= DRM_MODE_FLAG_NHSYNC; | |
045ac3b5 | 1389 | |
63000ef6 XZ |
1390 | if (tmp & TRANS_DP_VSYNC_ACTIVE_HIGH) |
1391 | flags |= DRM_MODE_FLAG_PVSYNC; | |
1392 | else | |
1393 | flags |= DRM_MODE_FLAG_NVSYNC; | |
1394 | } | |
045ac3b5 JB |
1395 | |
1396 | pipe_config->adjusted_mode.flags |= flags; | |
f1f644dc JB |
1397 | |
1398 | if (dp_to_dig_port(intel_dp)->port == PORT_A) { | |
1399 | if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ) | |
1400 | pipe_config->port_clock = 162000; | |
1401 | else | |
1402 | pipe_config->port_clock = 270000; | |
1403 | } | |
c6cd2ee2 JN |
1404 | |
1405 | if (is_edp(intel_dp) && dev_priv->vbt.edp_bpp && | |
1406 | pipe_config->pipe_bpp > dev_priv->vbt.edp_bpp) { | |
1407 | /* | |
1408 | * This is a big fat ugly hack. | |
1409 | * | |
1410 | * Some machines in UEFI boot mode provide us a VBT that has 18 | |
1411 | * bpp and 1.62 GHz link bandwidth for eDP, which for reasons | |
1412 | * unknown we fail to light up. Yet the same BIOS boots up with | |
1413 | * 24 bpp and 2.7 GHz link. Use the same bpp as the BIOS uses as | |
1414 | * max, not what it tells us to use. | |
1415 | * | |
1416 | * Note: This will still be broken if the eDP panel is not lit | |
1417 | * up by the BIOS, and thus we can't get the mode at module | |
1418 | * load. | |
1419 | */ | |
1420 | DRM_DEBUG_KMS("pipe has %d bpp for eDP panel, overriding BIOS-provided max %d bpp\n", | |
1421 | pipe_config->pipe_bpp, dev_priv->vbt.edp_bpp); | |
1422 | dev_priv->vbt.edp_bpp = pipe_config->pipe_bpp; | |
1423 | } | |
045ac3b5 JB |
1424 | } |
1425 | ||
2293bb5c SK |
1426 | static bool is_edp_psr(struct intel_dp *intel_dp) |
1427 | { | |
1428 | return is_edp(intel_dp) && | |
1429 | intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED; | |
1430 | } | |
1431 | ||
2b28bb1b RV |
1432 | static bool intel_edp_is_psr_enabled(struct drm_device *dev) |
1433 | { | |
1434 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1435 | ||
1436 | if (!IS_HASWELL(dev)) | |
1437 | return false; | |
1438 | ||
1439 | return I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE; | |
1440 | } | |
1441 | ||
1442 | static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp, | |
1443 | struct edp_vsc_psr *vsc_psr) | |
1444 | { | |
1445 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1446 | struct drm_device *dev = dig_port->base.base.dev; | |
1447 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1448 | struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc); | |
1449 | u32 ctl_reg = HSW_TVIDEO_DIP_CTL(crtc->config.cpu_transcoder); | |
1450 | u32 data_reg = HSW_TVIDEO_DIP_VSC_DATA(crtc->config.cpu_transcoder); | |
1451 | uint32_t *data = (uint32_t *) vsc_psr; | |
1452 | unsigned int i; | |
1453 | ||
1454 | /* As per BSPec (Pipe Video Data Island Packet), we need to disable | |
1455 | the video DIP being updated before program video DIP data buffer | |
1456 | registers for DIP being updated. */ | |
1457 | I915_WRITE(ctl_reg, 0); | |
1458 | POSTING_READ(ctl_reg); | |
1459 | ||
1460 | for (i = 0; i < VIDEO_DIP_VSC_DATA_SIZE; i += 4) { | |
1461 | if (i < sizeof(struct edp_vsc_psr)) | |
1462 | I915_WRITE(data_reg + i, *data++); | |
1463 | else | |
1464 | I915_WRITE(data_reg + i, 0); | |
1465 | } | |
1466 | ||
1467 | I915_WRITE(ctl_reg, VIDEO_DIP_ENABLE_VSC_HSW); | |
1468 | POSTING_READ(ctl_reg); | |
1469 | } | |
1470 | ||
1471 | static void intel_edp_psr_setup(struct intel_dp *intel_dp) | |
1472 | { | |
1473 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1474 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1475 | struct edp_vsc_psr psr_vsc; | |
1476 | ||
1477 | if (intel_dp->psr_setup_done) | |
1478 | return; | |
1479 | ||
1480 | /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */ | |
1481 | memset(&psr_vsc, 0, sizeof(psr_vsc)); | |
1482 | psr_vsc.sdp_header.HB0 = 0; | |
1483 | psr_vsc.sdp_header.HB1 = 0x7; | |
1484 | psr_vsc.sdp_header.HB2 = 0x2; | |
1485 | psr_vsc.sdp_header.HB3 = 0x8; | |
1486 | intel_edp_psr_write_vsc(intel_dp, &psr_vsc); | |
1487 | ||
1488 | /* Avoid continuous PSR exit by masking memup and hpd */ | |
1489 | I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP | | |
0cc4b699 | 1490 | EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP); |
2b28bb1b RV |
1491 | |
1492 | intel_dp->psr_setup_done = true; | |
1493 | } | |
1494 | ||
1495 | static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp) | |
1496 | { | |
1497 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1498 | struct drm_i915_private *dev_priv = dev->dev_private; | |
bc86625a | 1499 | uint32_t aux_clock_divider = get_aux_clock_divider(intel_dp, 0); |
2b28bb1b RV |
1500 | int precharge = 0x3; |
1501 | int msg_size = 5; /* Header(4) + Message(1) */ | |
1502 | ||
1503 | /* Enable PSR in sink */ | |
1504 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) | |
1505 | intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG, | |
1506 | DP_PSR_ENABLE & | |
1507 | ~DP_PSR_MAIN_LINK_ACTIVE); | |
1508 | else | |
1509 | intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG, | |
1510 | DP_PSR_ENABLE | | |
1511 | DP_PSR_MAIN_LINK_ACTIVE); | |
1512 | ||
1513 | /* Setup AUX registers */ | |
1514 | I915_WRITE(EDP_PSR_AUX_DATA1, EDP_PSR_DPCD_COMMAND); | |
1515 | I915_WRITE(EDP_PSR_AUX_DATA2, EDP_PSR_DPCD_NORMAL_OPERATION); | |
1516 | I915_WRITE(EDP_PSR_AUX_CTL, | |
1517 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
1518 | (msg_size << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
1519 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
1520 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT)); | |
1521 | } | |
1522 | ||
1523 | static void intel_edp_psr_enable_source(struct intel_dp *intel_dp) | |
1524 | { | |
1525 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1526 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1527 | uint32_t max_sleep_time = 0x1f; | |
1528 | uint32_t idle_frames = 1; | |
1529 | uint32_t val = 0x0; | |
1530 | ||
1531 | if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) { | |
1532 | val |= EDP_PSR_LINK_STANDBY; | |
1533 | val |= EDP_PSR_TP2_TP3_TIME_0us; | |
1534 | val |= EDP_PSR_TP1_TIME_0us; | |
1535 | val |= EDP_PSR_SKIP_AUX_EXIT; | |
1536 | } else | |
1537 | val |= EDP_PSR_LINK_DISABLE; | |
1538 | ||
1539 | I915_WRITE(EDP_PSR_CTL, val | | |
1540 | EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES | | |
1541 | max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT | | |
1542 | idle_frames << EDP_PSR_IDLE_FRAME_SHIFT | | |
1543 | EDP_PSR_ENABLE); | |
1544 | } | |
1545 | ||
3f51e471 RV |
1546 | static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp) |
1547 | { | |
1548 | struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); | |
1549 | struct drm_device *dev = dig_port->base.base.dev; | |
1550 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1551 | struct drm_crtc *crtc = dig_port->base.base.crtc; | |
1552 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1553 | struct drm_i915_gem_object *obj = to_intel_framebuffer(crtc->fb)->obj; | |
1554 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; | |
1555 | ||
1556 | if (!IS_HASWELL(dev)) { | |
1557 | DRM_DEBUG_KMS("PSR not supported on this platform\n"); | |
1558 | dev_priv->no_psr_reason = PSR_NO_SOURCE; | |
1559 | return false; | |
1560 | } | |
1561 | ||
1562 | if ((intel_encoder->type != INTEL_OUTPUT_EDP) || | |
1563 | (dig_port->port != PORT_A)) { | |
1564 | DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n"); | |
1565 | dev_priv->no_psr_reason = PSR_HSW_NOT_DDIA; | |
1566 | return false; | |
1567 | } | |
1568 | ||
1569 | if (!is_edp_psr(intel_dp)) { | |
1570 | DRM_DEBUG_KMS("PSR not supported by this panel\n"); | |
1571 | dev_priv->no_psr_reason = PSR_NO_SINK; | |
1572 | return false; | |
1573 | } | |
1574 | ||
105b7c11 RV |
1575 | if (!i915_enable_psr) { |
1576 | DRM_DEBUG_KMS("PSR disable by flag\n"); | |
1577 | dev_priv->no_psr_reason = PSR_MODULE_PARAM; | |
1578 | return false; | |
1579 | } | |
1580 | ||
cd234b0b CW |
1581 | crtc = dig_port->base.base.crtc; |
1582 | if (crtc == NULL) { | |
1583 | DRM_DEBUG_KMS("crtc not active for PSR\n"); | |
1584 | dev_priv->no_psr_reason = PSR_CRTC_NOT_ACTIVE; | |
1585 | return false; | |
1586 | } | |
1587 | ||
1588 | intel_crtc = to_intel_crtc(crtc); | |
3f51e471 RV |
1589 | if (!intel_crtc->active || !crtc->fb || !crtc->mode.clock) { |
1590 | DRM_DEBUG_KMS("crtc not active for PSR\n"); | |
1591 | dev_priv->no_psr_reason = PSR_CRTC_NOT_ACTIVE; | |
1592 | return false; | |
1593 | } | |
1594 | ||
cd234b0b | 1595 | obj = to_intel_framebuffer(crtc->fb)->obj; |
3f51e471 RV |
1596 | if (obj->tiling_mode != I915_TILING_X || |
1597 | obj->fence_reg == I915_FENCE_REG_NONE) { | |
1598 | DRM_DEBUG_KMS("PSR condition failed: fb not tiled or fenced\n"); | |
1599 | dev_priv->no_psr_reason = PSR_NOT_TILED; | |
1600 | return false; | |
1601 | } | |
1602 | ||
1603 | if (I915_READ(SPRCTL(intel_crtc->pipe)) & SPRITE_ENABLE) { | |
1604 | DRM_DEBUG_KMS("PSR condition failed: Sprite is Enabled\n"); | |
1605 | dev_priv->no_psr_reason = PSR_SPRITE_ENABLED; | |
1606 | return false; | |
1607 | } | |
1608 | ||
1609 | if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) & | |
1610 | S3D_ENABLE) { | |
1611 | DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n"); | |
1612 | dev_priv->no_psr_reason = PSR_S3D_ENABLED; | |
1613 | return false; | |
1614 | } | |
1615 | ||
1616 | if (crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) { | |
1617 | DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); | |
1618 | dev_priv->no_psr_reason = PSR_INTERLACED_ENABLED; | |
1619 | return false; | |
1620 | } | |
1621 | ||
1622 | return true; | |
1623 | } | |
1624 | ||
3d739d92 | 1625 | static void intel_edp_psr_do_enable(struct intel_dp *intel_dp) |
2b28bb1b RV |
1626 | { |
1627 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1628 | ||
3f51e471 RV |
1629 | if (!intel_edp_psr_match_conditions(intel_dp) || |
1630 | intel_edp_is_psr_enabled(dev)) | |
2b28bb1b RV |
1631 | return; |
1632 | ||
1633 | /* Setup PSR once */ | |
1634 | intel_edp_psr_setup(intel_dp); | |
1635 | ||
1636 | /* Enable PSR on the panel */ | |
1637 | intel_edp_psr_enable_sink(intel_dp); | |
1638 | ||
1639 | /* Enable PSR on the host */ | |
1640 | intel_edp_psr_enable_source(intel_dp); | |
1641 | } | |
1642 | ||
3d739d92 RV |
1643 | void intel_edp_psr_enable(struct intel_dp *intel_dp) |
1644 | { | |
1645 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1646 | ||
1647 | if (intel_edp_psr_match_conditions(intel_dp) && | |
1648 | !intel_edp_is_psr_enabled(dev)) | |
1649 | intel_edp_psr_do_enable(intel_dp); | |
1650 | } | |
1651 | ||
2b28bb1b RV |
1652 | void intel_edp_psr_disable(struct intel_dp *intel_dp) |
1653 | { | |
1654 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1655 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1656 | ||
1657 | if (!intel_edp_is_psr_enabled(dev)) | |
1658 | return; | |
1659 | ||
1660 | I915_WRITE(EDP_PSR_CTL, I915_READ(EDP_PSR_CTL) & ~EDP_PSR_ENABLE); | |
1661 | ||
1662 | /* Wait till PSR is idle */ | |
1663 | if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL) & | |
1664 | EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10)) | |
1665 | DRM_ERROR("Timed out waiting for PSR Idle State\n"); | |
1666 | } | |
1667 | ||
3d739d92 RV |
1668 | void intel_edp_psr_update(struct drm_device *dev) |
1669 | { | |
1670 | struct intel_encoder *encoder; | |
1671 | struct intel_dp *intel_dp = NULL; | |
1672 | ||
1673 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) | |
1674 | if (encoder->type == INTEL_OUTPUT_EDP) { | |
1675 | intel_dp = enc_to_intel_dp(&encoder->base); | |
1676 | ||
1677 | if (!is_edp_psr(intel_dp)) | |
1678 | return; | |
1679 | ||
1680 | if (!intel_edp_psr_match_conditions(intel_dp)) | |
1681 | intel_edp_psr_disable(intel_dp); | |
1682 | else | |
1683 | if (!intel_edp_is_psr_enabled(dev)) | |
1684 | intel_edp_psr_do_enable(intel_dp); | |
1685 | } | |
1686 | } | |
1687 | ||
e8cb4558 | 1688 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1689 | { |
e8cb4558 | 1690 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 ID |
1691 | enum port port = dp_to_dig_port(intel_dp)->port; |
1692 | struct drm_device *dev = encoder->base.dev; | |
6cb49835 DV |
1693 | |
1694 | /* Make sure the panel is off before trying to change the mode. But also | |
1695 | * ensure that we have vdd while we switch off the panel. */ | |
1696 | ironlake_edp_panel_vdd_on(intel_dp); | |
21264c63 | 1697 | ironlake_edp_backlight_off(intel_dp); |
c7ad3810 | 1698 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
35a38556 | 1699 | ironlake_edp_panel_off(intel_dp); |
3739850b DV |
1700 | |
1701 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
982a3866 | 1702 | if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |
3739850b | 1703 | intel_dp_link_down(intel_dp); |
d240f20f JB |
1704 | } |
1705 | ||
2bd2ad64 | 1706 | static void intel_post_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1707 | { |
2bd2ad64 | 1708 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
982a3866 | 1709 | enum port port = dp_to_dig_port(intel_dp)->port; |
b2634017 | 1710 | struct drm_device *dev = encoder->base.dev; |
2bd2ad64 | 1711 | |
982a3866 | 1712 | if (port == PORT_A || IS_VALLEYVIEW(dev)) { |
3739850b | 1713 | intel_dp_link_down(intel_dp); |
b2634017 JB |
1714 | if (!IS_VALLEYVIEW(dev)) |
1715 | ironlake_edp_pll_off(intel_dp); | |
3739850b | 1716 | } |
2bd2ad64 DV |
1717 | } |
1718 | ||
e8cb4558 | 1719 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 1720 | { |
e8cb4558 DV |
1721 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1722 | struct drm_device *dev = encoder->base.dev; | |
1723 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1724 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 1725 | |
0c33d8d7 DV |
1726 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
1727 | return; | |
5d613501 | 1728 | |
97af61f5 | 1729 | ironlake_edp_panel_vdd_on(intel_dp); |
f01eca2e | 1730 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
33a34e4e | 1731 | intel_dp_start_link_train(intel_dp); |
97af61f5 | 1732 | ironlake_edp_panel_on(intel_dp); |
bd943159 | 1733 | ironlake_edp_panel_vdd_off(intel_dp, true); |
33a34e4e | 1734 | intel_dp_complete_link_train(intel_dp); |
3ab9c637 | 1735 | intel_dp_stop_link_train(intel_dp); |
f01eca2e | 1736 | ironlake_edp_backlight_on(intel_dp); |
ab1f90f9 | 1737 | } |
89b667f8 | 1738 | |
ab1f90f9 JN |
1739 | static void vlv_enable_dp(struct intel_encoder *encoder) |
1740 | { | |
d240f20f JB |
1741 | } |
1742 | ||
2bd2ad64 | 1743 | static void intel_pre_enable_dp(struct intel_encoder *encoder) |
ab1f90f9 JN |
1744 | { |
1745 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
1746 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
1747 | ||
1748 | if (dport->port == PORT_A) | |
1749 | ironlake_edp_pll_on(intel_dp); | |
1750 | } | |
1751 | ||
1752 | static void vlv_pre_enable_dp(struct intel_encoder *encoder) | |
a4fc5ed6 | 1753 | { |
2bd2ad64 | 1754 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
bc7d38a4 | 1755 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); |
b2634017 | 1756 | struct drm_device *dev = encoder->base.dev; |
89b667f8 | 1757 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab1f90f9 JN |
1758 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc); |
1759 | int port = vlv_dport_to_channel(dport); | |
1760 | int pipe = intel_crtc->pipe; | |
1761 | u32 val; | |
a4fc5ed6 | 1762 | |
ab1f90f9 | 1763 | mutex_lock(&dev_priv->dpio_lock); |
89b667f8 | 1764 | |
ab1f90f9 JN |
1765 | val = vlv_dpio_read(dev_priv, DPIO_DATA_LANE_A(port)); |
1766 | val = 0; | |
1767 | if (pipe) | |
1768 | val |= (1<<21); | |
1769 | else | |
1770 | val &= ~(1<<21); | |
1771 | val |= 0x001000c4; | |
1772 | vlv_dpio_write(dev_priv, DPIO_DATA_CHANNEL(port), val); | |
1773 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF0(port), 0x00760018); | |
1774 | vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF8(port), 0x00400888); | |
89b667f8 | 1775 | |
ab1f90f9 JN |
1776 | mutex_unlock(&dev_priv->dpio_lock); |
1777 | ||
1778 | intel_enable_dp(encoder); | |
1779 | ||
1780 | vlv_wait_port_ready(dev_priv, port); | |
89b667f8 JB |
1781 | } |
1782 | ||
1783 | static void intel_dp_pre_pll_enable(struct intel_encoder *encoder) | |
1784 | { | |
1785 | struct intel_digital_port *dport = enc_to_dig_port(&encoder->base); | |
1786 | struct drm_device *dev = encoder->base.dev; | |
1787 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1788 | int port = vlv_dport_to_channel(dport); | |
1789 | ||
1790 | if (!IS_VALLEYVIEW(dev)) | |
1791 | return; | |
1792 | ||
89b667f8 | 1793 | /* Program Tx lane resets to default */ |
0980a60f | 1794 | mutex_lock(&dev_priv->dpio_lock); |
ae99258f | 1795 | vlv_dpio_write(dev_priv, DPIO_PCS_TX(port), |
89b667f8 JB |
1796 | DPIO_PCS_TX_LANE2_RESET | |
1797 | DPIO_PCS_TX_LANE1_RESET); | |
ae99258f | 1798 | vlv_dpio_write(dev_priv, DPIO_PCS_CLK(port), |
89b667f8 JB |
1799 | DPIO_PCS_CLK_CRI_RXEB_EIOS_EN | |
1800 | DPIO_PCS_CLK_CRI_RXDIGFILTSG_EN | | |
1801 | (1<<DPIO_PCS_CLK_DATAWIDTH_SHIFT) | | |
1802 | DPIO_PCS_CLK_SOFT_RESET); | |
1803 | ||
1804 | /* Fix up inter-pair skew failure */ | |
ae99258f JN |
1805 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER1(port), 0x00750f00); |
1806 | vlv_dpio_write(dev_priv, DPIO_TX_CTL(port), 0x00001500); | |
1807 | vlv_dpio_write(dev_priv, DPIO_TX_LANE(port), 0x40400000); | |
0980a60f | 1808 | mutex_unlock(&dev_priv->dpio_lock); |
a4fc5ed6 KP |
1809 | } |
1810 | ||
1811 | /* | |
df0c237d JB |
1812 | * Native read with retry for link status and receiver capability reads for |
1813 | * cases where the sink may still be asleep. | |
a4fc5ed6 KP |
1814 | */ |
1815 | static bool | |
df0c237d JB |
1816 | intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address, |
1817 | uint8_t *recv, int recv_bytes) | |
a4fc5ed6 | 1818 | { |
61da5fab JB |
1819 | int ret, i; |
1820 | ||
df0c237d JB |
1821 | /* |
1822 | * Sinks are *supposed* to come up within 1ms from an off state, | |
1823 | * but we're also supposed to retry 3 times per the spec. | |
1824 | */ | |
61da5fab | 1825 | for (i = 0; i < 3; i++) { |
df0c237d JB |
1826 | ret = intel_dp_aux_native_read(intel_dp, address, recv, |
1827 | recv_bytes); | |
1828 | if (ret == recv_bytes) | |
61da5fab JB |
1829 | return true; |
1830 | msleep(1); | |
1831 | } | |
a4fc5ed6 | 1832 | |
61da5fab | 1833 | return false; |
a4fc5ed6 KP |
1834 | } |
1835 | ||
1836 | /* | |
1837 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
1838 | * link status information | |
1839 | */ | |
1840 | static bool | |
93f62dad | 1841 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 1842 | { |
df0c237d JB |
1843 | return intel_dp_aux_native_read_retry(intel_dp, |
1844 | DP_LANE0_1_STATUS, | |
93f62dad | 1845 | link_status, |
df0c237d | 1846 | DP_LINK_STATUS_SIZE); |
a4fc5ed6 KP |
1847 | } |
1848 | ||
a4fc5ed6 KP |
1849 | #if 0 |
1850 | static char *voltage_names[] = { | |
1851 | "0.4V", "0.6V", "0.8V", "1.2V" | |
1852 | }; | |
1853 | static char *pre_emph_names[] = { | |
1854 | "0dB", "3.5dB", "6dB", "9.5dB" | |
1855 | }; | |
1856 | static char *link_train_names[] = { | |
1857 | "pattern 1", "pattern 2", "idle", "off" | |
1858 | }; | |
1859 | #endif | |
1860 | ||
1861 | /* | |
1862 | * These are source-specific values; current Intel hardware supports | |
1863 | * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB | |
1864 | */ | |
a4fc5ed6 KP |
1865 | |
1866 | static uint8_t | |
1a2eb460 | 1867 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 1868 | { |
30add22d | 1869 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1870 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1871 | |
e2fa6fba P |
1872 | if (IS_VALLEYVIEW(dev)) |
1873 | return DP_TRAIN_VOLTAGE_SWING_1200; | |
bc7d38a4 | 1874 | else if (IS_GEN7(dev) && port == PORT_A) |
1a2eb460 | 1875 | return DP_TRAIN_VOLTAGE_SWING_800; |
bc7d38a4 | 1876 | else if (HAS_PCH_CPT(dev) && port != PORT_A) |
1a2eb460 KP |
1877 | return DP_TRAIN_VOLTAGE_SWING_1200; |
1878 | else | |
1879 | return DP_TRAIN_VOLTAGE_SWING_800; | |
1880 | } | |
1881 | ||
1882 | static uint8_t | |
1883 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
1884 | { | |
30add22d | 1885 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
bc7d38a4 | 1886 | enum port port = dp_to_dig_port(intel_dp)->port; |
1a2eb460 | 1887 | |
22b8bf17 | 1888 | if (HAS_DDI(dev)) { |
d6c0d722 PZ |
1889 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1890 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1891 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1892 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1893 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1894 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1895 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1896 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1897 | default: | |
1898 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1899 | } | |
e2fa6fba P |
1900 | } else if (IS_VALLEYVIEW(dev)) { |
1901 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1902 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1903 | return DP_TRAIN_PRE_EMPHASIS_9_5; | |
1904 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1905 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1906 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1907 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1908 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1909 | default: | |
1910 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1911 | } | |
bc7d38a4 | 1912 | } else if (IS_GEN7(dev) && port == PORT_A) { |
1a2eb460 KP |
1913 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { |
1914 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1915 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1916 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1917 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1918 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1919 | default: | |
1920 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1921 | } | |
1922 | } else { | |
1923 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1924 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1925 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1926 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1927 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1928 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1929 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1930 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1931 | default: | |
1932 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1933 | } | |
a4fc5ed6 KP |
1934 | } |
1935 | } | |
1936 | ||
e2fa6fba P |
1937 | static uint32_t intel_vlv_signal_levels(struct intel_dp *intel_dp) |
1938 | { | |
1939 | struct drm_device *dev = intel_dp_to_dev(intel_dp); | |
1940 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1941 | struct intel_digital_port *dport = dp_to_dig_port(intel_dp); | |
1942 | unsigned long demph_reg_value, preemph_reg_value, | |
1943 | uniqtranscale_reg_value; | |
1944 | uint8_t train_set = intel_dp->train_set[0]; | |
cece5d58 | 1945 | int port = vlv_dport_to_channel(dport); |
e2fa6fba P |
1946 | |
1947 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { | |
1948 | case DP_TRAIN_PRE_EMPHASIS_0: | |
1949 | preemph_reg_value = 0x0004000; | |
1950 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1951 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1952 | demph_reg_value = 0x2B405555; | |
1953 | uniqtranscale_reg_value = 0x552AB83A; | |
1954 | break; | |
1955 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1956 | demph_reg_value = 0x2B404040; | |
1957 | uniqtranscale_reg_value = 0x5548B83A; | |
1958 | break; | |
1959 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1960 | demph_reg_value = 0x2B245555; | |
1961 | uniqtranscale_reg_value = 0x5560B83A; | |
1962 | break; | |
1963 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1964 | demph_reg_value = 0x2B405555; | |
1965 | uniqtranscale_reg_value = 0x5598DA3A; | |
1966 | break; | |
1967 | default: | |
1968 | return 0; | |
1969 | } | |
1970 | break; | |
1971 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1972 | preemph_reg_value = 0x0002000; | |
1973 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1974 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1975 | demph_reg_value = 0x2B404040; | |
1976 | uniqtranscale_reg_value = 0x5552B83A; | |
1977 | break; | |
1978 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1979 | demph_reg_value = 0x2B404848; | |
1980 | uniqtranscale_reg_value = 0x5580B83A; | |
1981 | break; | |
1982 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1983 | demph_reg_value = 0x2B404040; | |
1984 | uniqtranscale_reg_value = 0x55ADDA3A; | |
1985 | break; | |
1986 | default: | |
1987 | return 0; | |
1988 | } | |
1989 | break; | |
1990 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1991 | preemph_reg_value = 0x0000000; | |
1992 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1993 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1994 | demph_reg_value = 0x2B305555; | |
1995 | uniqtranscale_reg_value = 0x5570B83A; | |
1996 | break; | |
1997 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1998 | demph_reg_value = 0x2B2B4040; | |
1999 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2000 | break; | |
2001 | default: | |
2002 | return 0; | |
2003 | } | |
2004 | break; | |
2005 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2006 | preemph_reg_value = 0x0006000; | |
2007 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
2008 | case DP_TRAIN_VOLTAGE_SWING_400: | |
2009 | demph_reg_value = 0x1B405555; | |
2010 | uniqtranscale_reg_value = 0x55ADDA3A; | |
2011 | break; | |
2012 | default: | |
2013 | return 0; | |
2014 | } | |
2015 | break; | |
2016 | default: | |
2017 | return 0; | |
2018 | } | |
2019 | ||
0980a60f | 2020 | mutex_lock(&dev_priv->dpio_lock); |
ae99258f JN |
2021 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x00000000); |
2022 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL4(port), demph_reg_value); | |
2023 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL2(port), | |
e2fa6fba | 2024 | uniqtranscale_reg_value); |
ae99258f JN |
2025 | vlv_dpio_write(dev_priv, DPIO_TX_SWING_CTL3(port), 0x0C782040); |
2026 | vlv_dpio_write(dev_priv, DPIO_PCS_STAGGER0(port), 0x00030000); | |
2027 | vlv_dpio_write(dev_priv, DPIO_PCS_CTL_OVER1(port), preemph_reg_value); | |
2028 | vlv_dpio_write(dev_priv, DPIO_TX_OCALINIT(port), 0x80000000); | |
0980a60f | 2029 | mutex_unlock(&dev_priv->dpio_lock); |
e2fa6fba P |
2030 | |
2031 | return 0; | |
2032 | } | |
2033 | ||
a4fc5ed6 | 2034 | static void |
93f62dad | 2035 | intel_get_adjust_train(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 KP |
2036 | { |
2037 | uint8_t v = 0; | |
2038 | uint8_t p = 0; | |
2039 | int lane; | |
1a2eb460 KP |
2040 | uint8_t voltage_max; |
2041 | uint8_t preemph_max; | |
a4fc5ed6 | 2042 | |
33a34e4e | 2043 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
0f037bde DV |
2044 | uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane); |
2045 | uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane); | |
a4fc5ed6 KP |
2046 | |
2047 | if (this_v > v) | |
2048 | v = this_v; | |
2049 | if (this_p > p) | |
2050 | p = this_p; | |
2051 | } | |
2052 | ||
1a2eb460 | 2053 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
2054 | if (v >= voltage_max) |
2055 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 2056 | |
1a2eb460 KP |
2057 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
2058 | if (p >= preemph_max) | |
2059 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
2060 | |
2061 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 2062 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
2063 | } |
2064 | ||
2065 | static uint32_t | |
f0a3424e | 2066 | intel_gen4_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2067 | { |
3cf2efb1 | 2068 | uint32_t signal_levels = 0; |
a4fc5ed6 | 2069 | |
3cf2efb1 | 2070 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
2071 | case DP_TRAIN_VOLTAGE_SWING_400: |
2072 | default: | |
2073 | signal_levels |= DP_VOLTAGE_0_4; | |
2074 | break; | |
2075 | case DP_TRAIN_VOLTAGE_SWING_600: | |
2076 | signal_levels |= DP_VOLTAGE_0_6; | |
2077 | break; | |
2078 | case DP_TRAIN_VOLTAGE_SWING_800: | |
2079 | signal_levels |= DP_VOLTAGE_0_8; | |
2080 | break; | |
2081 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
2082 | signal_levels |= DP_VOLTAGE_1_2; | |
2083 | break; | |
2084 | } | |
3cf2efb1 | 2085 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
2086 | case DP_TRAIN_PRE_EMPHASIS_0: |
2087 | default: | |
2088 | signal_levels |= DP_PRE_EMPHASIS_0; | |
2089 | break; | |
2090 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
2091 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
2092 | break; | |
2093 | case DP_TRAIN_PRE_EMPHASIS_6: | |
2094 | signal_levels |= DP_PRE_EMPHASIS_6; | |
2095 | break; | |
2096 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
2097 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
2098 | break; | |
2099 | } | |
2100 | return signal_levels; | |
2101 | } | |
2102 | ||
e3421a18 ZW |
2103 | /* Gen6's DP voltage swing and pre-emphasis control */ |
2104 | static uint32_t | |
2105 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
2106 | { | |
3c5a62b5 YL |
2107 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2108 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2109 | switch (signal_levels) { | |
e3421a18 | 2110 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2111 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2112 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
2113 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2114 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 2115 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
2116 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
2117 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 2118 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
2119 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
2120 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 2121 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
2122 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
2123 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 2124 | default: |
3c5a62b5 YL |
2125 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
2126 | "0x%x\n", signal_levels); | |
2127 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
2128 | } |
2129 | } | |
2130 | ||
1a2eb460 KP |
2131 | /* Gen7's DP voltage swing and pre-emphasis control */ |
2132 | static uint32_t | |
2133 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
2134 | { | |
2135 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
2136 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2137 | switch (signal_levels) { | |
2138 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2139 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
2140 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2141 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
2142 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2143 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
2144 | ||
2145 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
2146 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
2147 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2148 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
2149 | ||
2150 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
2151 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
2152 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2153 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
2154 | ||
2155 | default: | |
2156 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2157 | "0x%x\n", signal_levels); | |
2158 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
2159 | } | |
2160 | } | |
2161 | ||
d6c0d722 PZ |
2162 | /* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */ |
2163 | static uint32_t | |
f0a3424e | 2164 | intel_hsw_signal_levels(uint8_t train_set) |
a4fc5ed6 | 2165 | { |
d6c0d722 PZ |
2166 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
2167 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
2168 | switch (signal_levels) { | |
2169 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
2170 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
2171 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2172 | return DDI_BUF_EMP_400MV_3_5DB_HSW; | |
2173 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
2174 | return DDI_BUF_EMP_400MV_6DB_HSW; | |
2175 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_9_5: | |
2176 | return DDI_BUF_EMP_400MV_9_5DB_HSW; | |
a4fc5ed6 | 2177 | |
d6c0d722 PZ |
2178 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
2179 | return DDI_BUF_EMP_600MV_0DB_HSW; | |
2180 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2181 | return DDI_BUF_EMP_600MV_3_5DB_HSW; | |
2182 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: | |
2183 | return DDI_BUF_EMP_600MV_6DB_HSW; | |
a4fc5ed6 | 2184 | |
d6c0d722 PZ |
2185 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
2186 | return DDI_BUF_EMP_800MV_0DB_HSW; | |
2187 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
2188 | return DDI_BUF_EMP_800MV_3_5DB_HSW; | |
2189 | default: | |
2190 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
2191 | "0x%x\n", signal_levels); | |
2192 | return DDI_BUF_EMP_400MV_0DB_HSW; | |
a4fc5ed6 | 2193 | } |
a4fc5ed6 KP |
2194 | } |
2195 | ||
f0a3424e PZ |
2196 | /* Properly updates "DP" with the correct signal levels. */ |
2197 | static void | |
2198 | intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP) | |
2199 | { | |
2200 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
bc7d38a4 | 2201 | enum port port = intel_dig_port->port; |
f0a3424e PZ |
2202 | struct drm_device *dev = intel_dig_port->base.base.dev; |
2203 | uint32_t signal_levels, mask; | |
2204 | uint8_t train_set = intel_dp->train_set[0]; | |
2205 | ||
22b8bf17 | 2206 | if (HAS_DDI(dev)) { |
f0a3424e PZ |
2207 | signal_levels = intel_hsw_signal_levels(train_set); |
2208 | mask = DDI_BUF_EMP_MASK; | |
e2fa6fba P |
2209 | } else if (IS_VALLEYVIEW(dev)) { |
2210 | signal_levels = intel_vlv_signal_levels(intel_dp); | |
2211 | mask = 0; | |
bc7d38a4 | 2212 | } else if (IS_GEN7(dev) && port == PORT_A) { |
f0a3424e PZ |
2213 | signal_levels = intel_gen7_edp_signal_levels(train_set); |
2214 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB; | |
bc7d38a4 | 2215 | } else if (IS_GEN6(dev) && port == PORT_A) { |
f0a3424e PZ |
2216 | signal_levels = intel_gen6_edp_signal_levels(train_set); |
2217 | mask = EDP_LINK_TRAIN_VOL_EMP_MASK_SNB; | |
2218 | } else { | |
2219 | signal_levels = intel_gen4_signal_levels(train_set); | |
2220 | mask = DP_VOLTAGE_MASK | DP_PRE_EMPHASIS_MASK; | |
2221 | } | |
2222 | ||
2223 | DRM_DEBUG_KMS("Using signal levels %08x\n", signal_levels); | |
2224 | ||
2225 | *DP = (*DP & ~mask) | signal_levels; | |
2226 | } | |
2227 | ||
a4fc5ed6 | 2228 | static bool |
ea5b213a | 2229 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
a4fc5ed6 | 2230 | uint32_t dp_reg_value, |
58e10eb9 | 2231 | uint8_t dp_train_pat) |
a4fc5ed6 | 2232 | { |
174edf1f PZ |
2233 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2234 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
a4fc5ed6 | 2235 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 2236 | enum port port = intel_dig_port->port; |
a4fc5ed6 KP |
2237 | int ret; |
2238 | ||
22b8bf17 | 2239 | if (HAS_DDI(dev)) { |
3ab9c637 | 2240 | uint32_t temp = I915_READ(DP_TP_CTL(port)); |
d6c0d722 PZ |
2241 | |
2242 | if (dp_train_pat & DP_LINK_SCRAMBLING_DISABLE) | |
2243 | temp |= DP_TP_CTL_SCRAMBLE_DISABLE; | |
2244 | else | |
2245 | temp &= ~DP_TP_CTL_SCRAMBLE_DISABLE; | |
2246 | ||
2247 | temp &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2248 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2249 | case DP_TRAINING_PATTERN_DISABLE: | |
d6c0d722 PZ |
2250 | temp |= DP_TP_CTL_LINK_TRAIN_NORMAL; |
2251 | ||
2252 | break; | |
2253 | case DP_TRAINING_PATTERN_1: | |
2254 | temp |= DP_TP_CTL_LINK_TRAIN_PAT1; | |
2255 | break; | |
2256 | case DP_TRAINING_PATTERN_2: | |
2257 | temp |= DP_TP_CTL_LINK_TRAIN_PAT2; | |
2258 | break; | |
2259 | case DP_TRAINING_PATTERN_3: | |
2260 | temp |= DP_TP_CTL_LINK_TRAIN_PAT3; | |
2261 | break; | |
2262 | } | |
174edf1f | 2263 | I915_WRITE(DP_TP_CTL(port), temp); |
d6c0d722 | 2264 | |
bc7d38a4 | 2265 | } else if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
47ea7542 PZ |
2266 | dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT; |
2267 | ||
2268 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2269 | case DP_TRAINING_PATTERN_DISABLE: | |
2270 | dp_reg_value |= DP_LINK_TRAIN_OFF_CPT; | |
2271 | break; | |
2272 | case DP_TRAINING_PATTERN_1: | |
2273 | dp_reg_value |= DP_LINK_TRAIN_PAT_1_CPT; | |
2274 | break; | |
2275 | case DP_TRAINING_PATTERN_2: | |
2276 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
2277 | break; | |
2278 | case DP_TRAINING_PATTERN_3: | |
2279 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2280 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
2281 | break; | |
2282 | } | |
2283 | ||
2284 | } else { | |
2285 | dp_reg_value &= ~DP_LINK_TRAIN_MASK; | |
2286 | ||
2287 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
2288 | case DP_TRAINING_PATTERN_DISABLE: | |
2289 | dp_reg_value |= DP_LINK_TRAIN_OFF; | |
2290 | break; | |
2291 | case DP_TRAINING_PATTERN_1: | |
2292 | dp_reg_value |= DP_LINK_TRAIN_PAT_1; | |
2293 | break; | |
2294 | case DP_TRAINING_PATTERN_2: | |
2295 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
2296 | break; | |
2297 | case DP_TRAINING_PATTERN_3: | |
2298 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
2299 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
2300 | break; | |
2301 | } | |
2302 | } | |
2303 | ||
ea5b213a CW |
2304 | I915_WRITE(intel_dp->output_reg, dp_reg_value); |
2305 | POSTING_READ(intel_dp->output_reg); | |
a4fc5ed6 | 2306 | |
ea5b213a | 2307 | intel_dp_aux_native_write_1(intel_dp, |
a4fc5ed6 KP |
2308 | DP_TRAINING_PATTERN_SET, |
2309 | dp_train_pat); | |
2310 | ||
47ea7542 PZ |
2311 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) != |
2312 | DP_TRAINING_PATTERN_DISABLE) { | |
2313 | ret = intel_dp_aux_native_write(intel_dp, | |
2314 | DP_TRAINING_LANE0_SET, | |
2315 | intel_dp->train_set, | |
2316 | intel_dp->lane_count); | |
2317 | if (ret != intel_dp->lane_count) | |
2318 | return false; | |
2319 | } | |
a4fc5ed6 KP |
2320 | |
2321 | return true; | |
2322 | } | |
2323 | ||
3ab9c637 ID |
2324 | static void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) |
2325 | { | |
2326 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
2327 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
2328 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2329 | enum port port = intel_dig_port->port; | |
2330 | uint32_t val; | |
2331 | ||
2332 | if (!HAS_DDI(dev)) | |
2333 | return; | |
2334 | ||
2335 | val = I915_READ(DP_TP_CTL(port)); | |
2336 | val &= ~DP_TP_CTL_LINK_TRAIN_MASK; | |
2337 | val |= DP_TP_CTL_LINK_TRAIN_IDLE; | |
2338 | I915_WRITE(DP_TP_CTL(port), val); | |
2339 | ||
2340 | /* | |
2341 | * On PORT_A we can have only eDP in SST mode. There the only reason | |
2342 | * we need to set idle transmission mode is to work around a HW issue | |
2343 | * where we enable the pipe while not in idle link-training mode. | |
2344 | * In this case there is requirement to wait for a minimum number of | |
2345 | * idle patterns to be sent. | |
2346 | */ | |
2347 | if (port == PORT_A) | |
2348 | return; | |
2349 | ||
2350 | if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE), | |
2351 | 1)) | |
2352 | DRM_ERROR("Timed out waiting for DP idle patterns\n"); | |
2353 | } | |
2354 | ||
33a34e4e | 2355 | /* Enable corresponding port and start training pattern 1 */ |
c19b0669 | 2356 | void |
33a34e4e | 2357 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 2358 | { |
da63a9f2 | 2359 | struct drm_encoder *encoder = &dp_to_dig_port(intel_dp)->base.base; |
c19b0669 | 2360 | struct drm_device *dev = encoder->dev; |
a4fc5ed6 KP |
2361 | int i; |
2362 | uint8_t voltage; | |
cdb0e95b | 2363 | int voltage_tries, loop_tries; |
ea5b213a | 2364 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2365 | |
affa9354 | 2366 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2367 | intel_ddi_prepare_link_retrain(encoder); |
2368 | ||
3cf2efb1 CW |
2369 | /* Write the link configuration data */ |
2370 | intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, | |
2371 | intel_dp->link_configuration, | |
2372 | DP_LINK_CONFIGURATION_SIZE); | |
a4fc5ed6 KP |
2373 | |
2374 | DP |= DP_PORT_EN; | |
1a2eb460 | 2375 | |
33a34e4e | 2376 | memset(intel_dp->train_set, 0, 4); |
a4fc5ed6 | 2377 | voltage = 0xff; |
cdb0e95b KP |
2378 | voltage_tries = 0; |
2379 | loop_tries = 0; | |
a4fc5ed6 | 2380 | for (;;) { |
33a34e4e | 2381 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ |
93f62dad | 2382 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
f0a3424e PZ |
2383 | |
2384 | intel_dp_set_signal_levels(intel_dp, &DP); | |
a4fc5ed6 | 2385 | |
a7c9655f | 2386 | /* Set training pattern 1 */ |
47ea7542 | 2387 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2388 | DP_TRAINING_PATTERN_1 | |
2389 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 | 2390 | break; |
a4fc5ed6 | 2391 | |
a7c9655f | 2392 | drm_dp_link_train_clock_recovery_delay(intel_dp->dpcd); |
93f62dad KP |
2393 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
2394 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 2395 | break; |
93f62dad | 2396 | } |
a4fc5ed6 | 2397 | |
01916270 | 2398 | if (drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
93f62dad | 2399 | DRM_DEBUG_KMS("clock recovery OK\n"); |
3cf2efb1 CW |
2400 | break; |
2401 | } | |
2402 | ||
2403 | /* Check to see if we've tried the max voltage */ | |
2404 | for (i = 0; i < intel_dp->lane_count; i++) | |
2405 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 2406 | break; |
3b4f819d | 2407 | if (i == intel_dp->lane_count) { |
b06fbda3 DV |
2408 | ++loop_tries; |
2409 | if (loop_tries == 5) { | |
cdb0e95b KP |
2410 | DRM_DEBUG_KMS("too many full retries, give up\n"); |
2411 | break; | |
2412 | } | |
2413 | memset(intel_dp->train_set, 0, 4); | |
2414 | voltage_tries = 0; | |
2415 | continue; | |
2416 | } | |
a4fc5ed6 | 2417 | |
3cf2efb1 | 2418 | /* Check to see if we've tried the same voltage 5 times */ |
b06fbda3 | 2419 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { |
24773670 | 2420 | ++voltage_tries; |
b06fbda3 DV |
2421 | if (voltage_tries == 5) { |
2422 | DRM_DEBUG_KMS("too many voltage retries, give up\n"); | |
2423 | break; | |
2424 | } | |
2425 | } else | |
2426 | voltage_tries = 0; | |
2427 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; | |
a4fc5ed6 | 2428 | |
3cf2efb1 | 2429 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2430 | intel_get_adjust_train(intel_dp, link_status); |
a4fc5ed6 KP |
2431 | } |
2432 | ||
33a34e4e JB |
2433 | intel_dp->DP = DP; |
2434 | } | |
2435 | ||
c19b0669 | 2436 | void |
33a34e4e JB |
2437 | intel_dp_complete_link_train(struct intel_dp *intel_dp) |
2438 | { | |
33a34e4e | 2439 | bool channel_eq = false; |
37f80975 | 2440 | int tries, cr_tries; |
33a34e4e JB |
2441 | uint32_t DP = intel_dp->DP; |
2442 | ||
a4fc5ed6 KP |
2443 | /* channel equalization */ |
2444 | tries = 0; | |
37f80975 | 2445 | cr_tries = 0; |
a4fc5ed6 KP |
2446 | channel_eq = false; |
2447 | for (;;) { | |
93f62dad | 2448 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 2449 | |
37f80975 JB |
2450 | if (cr_tries > 5) { |
2451 | DRM_ERROR("failed to train DP, aborting\n"); | |
2452 | intel_dp_link_down(intel_dp); | |
2453 | break; | |
2454 | } | |
2455 | ||
f0a3424e | 2456 | intel_dp_set_signal_levels(intel_dp, &DP); |
e3421a18 | 2457 | |
a4fc5ed6 | 2458 | /* channel eq pattern */ |
47ea7542 | 2459 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
2460 | DP_TRAINING_PATTERN_2 | |
2461 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 KP |
2462 | break; |
2463 | ||
a7c9655f | 2464 | drm_dp_link_train_channel_eq_delay(intel_dp->dpcd); |
93f62dad | 2465 | if (!intel_dp_get_link_status(intel_dp, link_status)) |
a4fc5ed6 | 2466 | break; |
a4fc5ed6 | 2467 | |
37f80975 | 2468 | /* Make sure clock is still ok */ |
01916270 | 2469 | if (!drm_dp_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 JB |
2470 | intel_dp_start_link_train(intel_dp); |
2471 | cr_tries++; | |
2472 | continue; | |
2473 | } | |
2474 | ||
1ffdff13 | 2475 | if (drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
3cf2efb1 CW |
2476 | channel_eq = true; |
2477 | break; | |
2478 | } | |
a4fc5ed6 | 2479 | |
37f80975 JB |
2480 | /* Try 5 times, then try clock recovery if that fails */ |
2481 | if (tries > 5) { | |
2482 | intel_dp_link_down(intel_dp); | |
2483 | intel_dp_start_link_train(intel_dp); | |
2484 | tries = 0; | |
2485 | cr_tries++; | |
2486 | continue; | |
2487 | } | |
a4fc5ed6 | 2488 | |
3cf2efb1 | 2489 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 2490 | intel_get_adjust_train(intel_dp, link_status); |
3cf2efb1 | 2491 | ++tries; |
869184a6 | 2492 | } |
3cf2efb1 | 2493 | |
3ab9c637 ID |
2494 | intel_dp_set_idle_link_train(intel_dp); |
2495 | ||
2496 | intel_dp->DP = DP; | |
2497 | ||
d6c0d722 | 2498 | if (channel_eq) |
07f42258 | 2499 | DRM_DEBUG_KMS("Channel EQ done. DP Training successful\n"); |
d6c0d722 | 2500 | |
3ab9c637 ID |
2501 | } |
2502 | ||
2503 | void intel_dp_stop_link_train(struct intel_dp *intel_dp) | |
2504 | { | |
2505 | intel_dp_set_link_train(intel_dp, intel_dp->DP, | |
2506 | DP_TRAINING_PATTERN_DISABLE); | |
a4fc5ed6 KP |
2507 | } |
2508 | ||
2509 | static void | |
ea5b213a | 2510 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 2511 | { |
da63a9f2 | 2512 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
bc7d38a4 | 2513 | enum port port = intel_dig_port->port; |
da63a9f2 | 2514 | struct drm_device *dev = intel_dig_port->base.base.dev; |
a4fc5ed6 | 2515 | struct drm_i915_private *dev_priv = dev->dev_private; |
ab527efc DV |
2516 | struct intel_crtc *intel_crtc = |
2517 | to_intel_crtc(intel_dig_port->base.base.crtc); | |
ea5b213a | 2518 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 2519 | |
c19b0669 PZ |
2520 | /* |
2521 | * DDI code has a strict mode set sequence and we should try to respect | |
2522 | * it, otherwise we might hang the machine in many different ways. So we | |
2523 | * really should be disabling the port only on a complete crtc_disable | |
2524 | * sequence. This function is just called under two conditions on DDI | |
2525 | * code: | |
2526 | * - Link train failed while doing crtc_enable, and on this case we | |
2527 | * really should respect the mode set sequence and wait for a | |
2528 | * crtc_disable. | |
2529 | * - Someone turned the monitor off and intel_dp_check_link_status | |
2530 | * called us. We don't need to disable the whole port on this case, so | |
2531 | * when someone turns the monitor on again, | |
2532 | * intel_ddi_prepare_link_retrain will take care of redoing the link | |
2533 | * train. | |
2534 | */ | |
affa9354 | 2535 | if (HAS_DDI(dev)) |
c19b0669 PZ |
2536 | return; |
2537 | ||
0c33d8d7 | 2538 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
2539 | return; |
2540 | ||
28c97730 | 2541 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 2542 | |
bc7d38a4 | 2543 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || port != PORT_A)) { |
e3421a18 | 2544 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 2545 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 ZW |
2546 | } else { |
2547 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 2548 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 2549 | } |
fe255d00 | 2550 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 2551 | |
ab527efc DV |
2552 | /* We don't really know why we're doing this */ |
2553 | intel_wait_for_vblank(dev, intel_crtc->pipe); | |
5eb08b69 | 2554 | |
493a7081 | 2555 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 2556 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
da63a9f2 | 2557 | struct drm_crtc *crtc = intel_dig_port->base.base.crtc; |
31acbcc4 | 2558 | |
5bddd17f EA |
2559 | /* Hardware workaround: leaving our transcoder select |
2560 | * set to transcoder B while it's off will prevent the | |
2561 | * corresponding HDMI output on transcoder A. | |
2562 | * | |
2563 | * Combine this with another hardware workaround: | |
2564 | * transcoder select bit can only be cleared while the | |
2565 | * port is enabled. | |
2566 | */ | |
2567 | DP &= ~DP_PIPEB_SELECT; | |
2568 | I915_WRITE(intel_dp->output_reg, DP); | |
2569 | ||
2570 | /* Changes to enable or select take place the vblank | |
2571 | * after being written. | |
2572 | */ | |
ff50afe9 DV |
2573 | if (WARN_ON(crtc == NULL)) { |
2574 | /* We should never try to disable a port without a crtc | |
2575 | * attached. For paranoia keep the code around for a | |
2576 | * bit. */ | |
31acbcc4 CW |
2577 | POSTING_READ(intel_dp->output_reg); |
2578 | msleep(50); | |
2579 | } else | |
ab527efc | 2580 | intel_wait_for_vblank(dev, intel_crtc->pipe); |
5bddd17f EA |
2581 | } |
2582 | ||
832afda6 | 2583 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
2584 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
2585 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 2586 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
2587 | } |
2588 | ||
26d61aad KP |
2589 | static bool |
2590 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 2591 | { |
577c7a50 DL |
2592 | char dpcd_hex_dump[sizeof(intel_dp->dpcd) * 3]; |
2593 | ||
92fd8fd1 | 2594 | if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd, |
edb39244 AJ |
2595 | sizeof(intel_dp->dpcd)) == 0) |
2596 | return false; /* aux transfer failed */ | |
92fd8fd1 | 2597 | |
577c7a50 DL |
2598 | hex_dump_to_buffer(intel_dp->dpcd, sizeof(intel_dp->dpcd), |
2599 | 32, 1, dpcd_hex_dump, sizeof(dpcd_hex_dump), false); | |
2600 | DRM_DEBUG_KMS("DPCD: %s\n", dpcd_hex_dump); | |
2601 | ||
edb39244 AJ |
2602 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
2603 | return false; /* DPCD not present */ | |
2604 | ||
2293bb5c SK |
2605 | /* Check if the panel supports PSR */ |
2606 | memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); | |
2607 | intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, | |
2608 | intel_dp->psr_dpcd, | |
2609 | sizeof(intel_dp->psr_dpcd)); | |
2610 | if (is_edp_psr(intel_dp)) | |
2611 | DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); | |
edb39244 AJ |
2612 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & |
2613 | DP_DWN_STRM_PORT_PRESENT)) | |
2614 | return true; /* native DP sink */ | |
2615 | ||
2616 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
2617 | return true; /* no per-port downstream info */ | |
2618 | ||
2619 | if (intel_dp_aux_native_read_retry(intel_dp, DP_DOWNSTREAM_PORT_0, | |
2620 | intel_dp->downstream_ports, | |
2621 | DP_MAX_DOWNSTREAM_PORTS) == 0) | |
2622 | return false; /* downstream port status fetch failed */ | |
2623 | ||
2624 | return true; | |
92fd8fd1 KP |
2625 | } |
2626 | ||
0d198328 AJ |
2627 | static void |
2628 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
2629 | { | |
2630 | u8 buf[3]; | |
2631 | ||
2632 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
2633 | return; | |
2634 | ||
351cfc34 DV |
2635 | ironlake_edp_panel_vdd_on(intel_dp); |
2636 | ||
0d198328 AJ |
2637 | if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3)) |
2638 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", | |
2639 | buf[0], buf[1], buf[2]); | |
2640 | ||
2641 | if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3)) | |
2642 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", | |
2643 | buf[0], buf[1], buf[2]); | |
351cfc34 DV |
2644 | |
2645 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
0d198328 AJ |
2646 | } |
2647 | ||
a60f0e38 JB |
2648 | static bool |
2649 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
2650 | { | |
2651 | int ret; | |
2652 | ||
2653 | ret = intel_dp_aux_native_read_retry(intel_dp, | |
2654 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2655 | sink_irq_vector, 1); | |
2656 | if (!ret) | |
2657 | return false; | |
2658 | ||
2659 | return true; | |
2660 | } | |
2661 | ||
2662 | static void | |
2663 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
2664 | { | |
2665 | /* NAK by default */ | |
9324cf7f | 2666 | intel_dp_aux_native_write_1(intel_dp, DP_TEST_RESPONSE, DP_TEST_NAK); |
a60f0e38 JB |
2667 | } |
2668 | ||
a4fc5ed6 KP |
2669 | /* |
2670 | * According to DP spec | |
2671 | * 5.1.2: | |
2672 | * 1. Read DPCD | |
2673 | * 2. Configure link according to Receiver Capabilities | |
2674 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
2675 | * 4. Check link status on receipt of hot-plug interrupt | |
2676 | */ | |
2677 | ||
00c09d70 | 2678 | void |
ea5b213a | 2679 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 2680 | { |
da63a9f2 | 2681 | struct intel_encoder *intel_encoder = &dp_to_dig_port(intel_dp)->base; |
a60f0e38 | 2682 | u8 sink_irq_vector; |
93f62dad | 2683 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 2684 | |
da63a9f2 | 2685 | if (!intel_encoder->connectors_active) |
d2b996ac | 2686 | return; |
59cd09e1 | 2687 | |
da63a9f2 | 2688 | if (WARN_ON(!intel_encoder->base.crtc)) |
a4fc5ed6 KP |
2689 | return; |
2690 | ||
92fd8fd1 | 2691 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 2692 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
ea5b213a | 2693 | intel_dp_link_down(intel_dp); |
a4fc5ed6 KP |
2694 | return; |
2695 | } | |
2696 | ||
92fd8fd1 | 2697 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 2698 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
2699 | intel_dp_link_down(intel_dp); |
2700 | return; | |
2701 | } | |
2702 | ||
a60f0e38 JB |
2703 | /* Try to read the source of the interrupt */ |
2704 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
2705 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
2706 | /* Clear interrupt source */ | |
2707 | intel_dp_aux_native_write_1(intel_dp, | |
2708 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2709 | sink_irq_vector); | |
2710 | ||
2711 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
2712 | intel_dp_handle_test_request(intel_dp); | |
2713 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
2714 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
2715 | } | |
2716 | ||
1ffdff13 | 2717 | if (!drm_dp_channel_eq_ok(link_status, intel_dp->lane_count)) { |
92fd8fd1 | 2718 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
da63a9f2 | 2719 | drm_get_encoder_name(&intel_encoder->base)); |
33a34e4e JB |
2720 | intel_dp_start_link_train(intel_dp); |
2721 | intel_dp_complete_link_train(intel_dp); | |
3ab9c637 | 2722 | intel_dp_stop_link_train(intel_dp); |
33a34e4e | 2723 | } |
a4fc5ed6 | 2724 | } |
a4fc5ed6 | 2725 | |
caf9ab24 | 2726 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 2727 | static enum drm_connector_status |
26d61aad | 2728 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 2729 | { |
caf9ab24 AJ |
2730 | uint8_t *dpcd = intel_dp->dpcd; |
2731 | bool hpd; | |
2732 | uint8_t type; | |
2733 | ||
2734 | if (!intel_dp_get_dpcd(intel_dp)) | |
2735 | return connector_status_disconnected; | |
2736 | ||
2737 | /* if there's no downstream port, we're done */ | |
2738 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
26d61aad | 2739 | return connector_status_connected; |
caf9ab24 AJ |
2740 | |
2741 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
2742 | hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD); | |
2743 | if (hpd) { | |
23235177 | 2744 | uint8_t reg; |
caf9ab24 | 2745 | if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT, |
23235177 | 2746 | ®, 1)) |
caf9ab24 | 2747 | return connector_status_unknown; |
23235177 AJ |
2748 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
2749 | : connector_status_disconnected; | |
caf9ab24 AJ |
2750 | } |
2751 | ||
2752 | /* If no HPD, poke DDC gently */ | |
2753 | if (drm_probe_ddc(&intel_dp->adapter)) | |
26d61aad | 2754 | return connector_status_connected; |
caf9ab24 AJ |
2755 | |
2756 | /* Well we tried, say unknown for unreliable port types */ | |
2757 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
2758 | if (type == DP_DS_PORT_TYPE_VGA || type == DP_DS_PORT_TYPE_NON_EDID) | |
2759 | return connector_status_unknown; | |
2760 | ||
2761 | /* Anything else is out of spec, warn and ignore */ | |
2762 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 2763 | return connector_status_disconnected; |
71ba9000 AJ |
2764 | } |
2765 | ||
5eb08b69 | 2766 | static enum drm_connector_status |
a9756bb5 | 2767 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 2768 | { |
30add22d | 2769 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
1b469639 DL |
2770 | struct drm_i915_private *dev_priv = dev->dev_private; |
2771 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
5eb08b69 ZW |
2772 | enum drm_connector_status status; |
2773 | ||
fe16d949 CW |
2774 | /* Can't disconnect eDP, but you can close the lid... */ |
2775 | if (is_edp(intel_dp)) { | |
30add22d | 2776 | status = intel_panel_detect(dev); |
fe16d949 CW |
2777 | if (status == connector_status_unknown) |
2778 | status = connector_status_connected; | |
2779 | return status; | |
2780 | } | |
01cb9ea6 | 2781 | |
1b469639 DL |
2782 | if (!ibx_digital_port_connected(dev_priv, intel_dig_port)) |
2783 | return connector_status_disconnected; | |
2784 | ||
26d61aad | 2785 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
2786 | } |
2787 | ||
a4fc5ed6 | 2788 | static enum drm_connector_status |
a9756bb5 | 2789 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 2790 | { |
30add22d | 2791 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
a4fc5ed6 | 2792 | struct drm_i915_private *dev_priv = dev->dev_private; |
34f2be46 | 2793 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
10f76a38 | 2794 | uint32_t bit; |
5eb08b69 | 2795 | |
35aad75f JB |
2796 | /* Can't disconnect eDP, but you can close the lid... */ |
2797 | if (is_edp(intel_dp)) { | |
2798 | enum drm_connector_status status; | |
2799 | ||
2800 | status = intel_panel_detect(dev); | |
2801 | if (status == connector_status_unknown) | |
2802 | status = connector_status_connected; | |
2803 | return status; | |
2804 | } | |
2805 | ||
34f2be46 VS |
2806 | switch (intel_dig_port->port) { |
2807 | case PORT_B: | |
26739f12 | 2808 | bit = PORTB_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2809 | break; |
34f2be46 | 2810 | case PORT_C: |
26739f12 | 2811 | bit = PORTC_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 | 2812 | break; |
34f2be46 | 2813 | case PORT_D: |
26739f12 | 2814 | bit = PORTD_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2815 | break; |
2816 | default: | |
2817 | return connector_status_unknown; | |
2818 | } | |
2819 | ||
10f76a38 | 2820 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
2821 | return connector_status_disconnected; |
2822 | ||
26d61aad | 2823 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
2824 | } |
2825 | ||
8c241fef KP |
2826 | static struct edid * |
2827 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2828 | { | |
9cd300e0 | 2829 | struct intel_connector *intel_connector = to_intel_connector(connector); |
d6f24d0f | 2830 | |
9cd300e0 JN |
2831 | /* use cached edid if we have one */ |
2832 | if (intel_connector->edid) { | |
2833 | struct edid *edid; | |
2834 | int size; | |
2835 | ||
2836 | /* invalid edid */ | |
2837 | if (IS_ERR(intel_connector->edid)) | |
d6f24d0f JB |
2838 | return NULL; |
2839 | ||
9cd300e0 | 2840 | size = (intel_connector->edid->extensions + 1) * EDID_LENGTH; |
edbe1581 | 2841 | edid = kmemdup(intel_connector->edid, size, GFP_KERNEL); |
d6f24d0f JB |
2842 | if (!edid) |
2843 | return NULL; | |
2844 | ||
d6f24d0f JB |
2845 | return edid; |
2846 | } | |
8c241fef | 2847 | |
9cd300e0 | 2848 | return drm_get_edid(connector, adapter); |
8c241fef KP |
2849 | } |
2850 | ||
2851 | static int | |
2852 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2853 | { | |
9cd300e0 | 2854 | struct intel_connector *intel_connector = to_intel_connector(connector); |
8c241fef | 2855 | |
9cd300e0 JN |
2856 | /* use cached edid if we have one */ |
2857 | if (intel_connector->edid) { | |
2858 | /* invalid edid */ | |
2859 | if (IS_ERR(intel_connector->edid)) | |
2860 | return 0; | |
2861 | ||
2862 | return intel_connector_update_modes(connector, | |
2863 | intel_connector->edid); | |
d6f24d0f JB |
2864 | } |
2865 | ||
9cd300e0 | 2866 | return intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
2867 | } |
2868 | ||
a9756bb5 ZW |
2869 | static enum drm_connector_status |
2870 | intel_dp_detect(struct drm_connector *connector, bool force) | |
2871 | { | |
2872 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
d63885da PZ |
2873 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); |
2874 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
fa90ecef | 2875 | struct drm_device *dev = connector->dev; |
a9756bb5 ZW |
2876 | enum drm_connector_status status; |
2877 | struct edid *edid = NULL; | |
2878 | ||
164c8598 CW |
2879 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
2880 | connector->base.id, drm_get_connector_name(connector)); | |
2881 | ||
a9756bb5 ZW |
2882 | intel_dp->has_audio = false; |
2883 | ||
2884 | if (HAS_PCH_SPLIT(dev)) | |
2885 | status = ironlake_dp_detect(intel_dp); | |
2886 | else | |
2887 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 2888 | |
a9756bb5 ZW |
2889 | if (status != connector_status_connected) |
2890 | return status; | |
2891 | ||
0d198328 AJ |
2892 | intel_dp_probe_oui(intel_dp); |
2893 | ||
c3e5f67b DV |
2894 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
2895 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 2896 | } else { |
8c241fef | 2897 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
f684960e CW |
2898 | if (edid) { |
2899 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
2900 | kfree(edid); |
2901 | } | |
a9756bb5 ZW |
2902 | } |
2903 | ||
d63885da PZ |
2904 | if (intel_encoder->type != INTEL_OUTPUT_EDP) |
2905 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
a9756bb5 | 2906 | return connector_status_connected; |
a4fc5ed6 KP |
2907 | } |
2908 | ||
2909 | static int intel_dp_get_modes(struct drm_connector *connector) | |
2910 | { | |
df0e9248 | 2911 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
dd06f90e | 2912 | struct intel_connector *intel_connector = to_intel_connector(connector); |
fa90ecef | 2913 | struct drm_device *dev = connector->dev; |
32f9d658 | 2914 | int ret; |
a4fc5ed6 KP |
2915 | |
2916 | /* We should parse the EDID data and find out if it has an audio sink | |
2917 | */ | |
2918 | ||
8c241fef | 2919 | ret = intel_dp_get_edid_modes(connector, &intel_dp->adapter); |
f8779fda | 2920 | if (ret) |
32f9d658 ZW |
2921 | return ret; |
2922 | ||
f8779fda | 2923 | /* if eDP has no EDID, fall back to fixed mode */ |
dd06f90e | 2924 | if (is_edp(intel_dp) && intel_connector->panel.fixed_mode) { |
f8779fda | 2925 | struct drm_display_mode *mode; |
dd06f90e JN |
2926 | mode = drm_mode_duplicate(dev, |
2927 | intel_connector->panel.fixed_mode); | |
f8779fda | 2928 | if (mode) { |
32f9d658 ZW |
2929 | drm_mode_probed_add(connector, mode); |
2930 | return 1; | |
2931 | } | |
2932 | } | |
2933 | return 0; | |
a4fc5ed6 KP |
2934 | } |
2935 | ||
1aad7ac0 CW |
2936 | static bool |
2937 | intel_dp_detect_audio(struct drm_connector *connector) | |
2938 | { | |
2939 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2940 | struct edid *edid; | |
2941 | bool has_audio = false; | |
2942 | ||
8c241fef | 2943 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
1aad7ac0 CW |
2944 | if (edid) { |
2945 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
2946 | kfree(edid); |
2947 | } | |
2948 | ||
2949 | return has_audio; | |
2950 | } | |
2951 | ||
f684960e CW |
2952 | static int |
2953 | intel_dp_set_property(struct drm_connector *connector, | |
2954 | struct drm_property *property, | |
2955 | uint64_t val) | |
2956 | { | |
e953fd7b | 2957 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
53b41837 | 2958 | struct intel_connector *intel_connector = to_intel_connector(connector); |
da63a9f2 PZ |
2959 | struct intel_encoder *intel_encoder = intel_attached_encoder(connector); |
2960 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
f684960e CW |
2961 | int ret; |
2962 | ||
662595df | 2963 | ret = drm_object_property_set_value(&connector->base, property, val); |
f684960e CW |
2964 | if (ret) |
2965 | return ret; | |
2966 | ||
3f43c48d | 2967 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
2968 | int i = val; |
2969 | bool has_audio; | |
2970 | ||
2971 | if (i == intel_dp->force_audio) | |
f684960e CW |
2972 | return 0; |
2973 | ||
1aad7ac0 | 2974 | intel_dp->force_audio = i; |
f684960e | 2975 | |
c3e5f67b | 2976 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
2977 | has_audio = intel_dp_detect_audio(connector); |
2978 | else | |
c3e5f67b | 2979 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
2980 | |
2981 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
2982 | return 0; |
2983 | ||
1aad7ac0 | 2984 | intel_dp->has_audio = has_audio; |
f684960e CW |
2985 | goto done; |
2986 | } | |
2987 | ||
e953fd7b | 2988 | if (property == dev_priv->broadcast_rgb_property) { |
ae4edb80 DV |
2989 | bool old_auto = intel_dp->color_range_auto; |
2990 | uint32_t old_range = intel_dp->color_range; | |
2991 | ||
55bc60db VS |
2992 | switch (val) { |
2993 | case INTEL_BROADCAST_RGB_AUTO: | |
2994 | intel_dp->color_range_auto = true; | |
2995 | break; | |
2996 | case INTEL_BROADCAST_RGB_FULL: | |
2997 | intel_dp->color_range_auto = false; | |
2998 | intel_dp->color_range = 0; | |
2999 | break; | |
3000 | case INTEL_BROADCAST_RGB_LIMITED: | |
3001 | intel_dp->color_range_auto = false; | |
3002 | intel_dp->color_range = DP_COLOR_RANGE_16_235; | |
3003 | break; | |
3004 | default: | |
3005 | return -EINVAL; | |
3006 | } | |
ae4edb80 DV |
3007 | |
3008 | if (old_auto == intel_dp->color_range_auto && | |
3009 | old_range == intel_dp->color_range) | |
3010 | return 0; | |
3011 | ||
e953fd7b CW |
3012 | goto done; |
3013 | } | |
3014 | ||
53b41837 YN |
3015 | if (is_edp(intel_dp) && |
3016 | property == connector->dev->mode_config.scaling_mode_property) { | |
3017 | if (val == DRM_MODE_SCALE_NONE) { | |
3018 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
3019 | return -EINVAL; | |
3020 | } | |
3021 | ||
3022 | if (intel_connector->panel.fitting_mode == val) { | |
3023 | /* the eDP scaling property is not changed */ | |
3024 | return 0; | |
3025 | } | |
3026 | intel_connector->panel.fitting_mode = val; | |
3027 | ||
3028 | goto done; | |
3029 | } | |
3030 | ||
f684960e CW |
3031 | return -EINVAL; |
3032 | ||
3033 | done: | |
c0c36b94 CW |
3034 | if (intel_encoder->base.crtc) |
3035 | intel_crtc_restore_mode(intel_encoder->base.crtc); | |
f684960e CW |
3036 | |
3037 | return 0; | |
3038 | } | |
3039 | ||
a4fc5ed6 | 3040 | static void |
73845adf | 3041 | intel_dp_connector_destroy(struct drm_connector *connector) |
a4fc5ed6 | 3042 | { |
1d508706 | 3043 | struct intel_connector *intel_connector = to_intel_connector(connector); |
aaa6fd2a | 3044 | |
9cd300e0 JN |
3045 | if (!IS_ERR_OR_NULL(intel_connector->edid)) |
3046 | kfree(intel_connector->edid); | |
3047 | ||
acd8db10 PZ |
3048 | /* Can't call is_edp() since the encoder may have been destroyed |
3049 | * already. */ | |
3050 | if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) | |
1d508706 | 3051 | intel_panel_fini(&intel_connector->panel); |
aaa6fd2a | 3052 | |
a4fc5ed6 KP |
3053 | drm_sysfs_connector_remove(connector); |
3054 | drm_connector_cleanup(connector); | |
55f78c43 | 3055 | kfree(connector); |
a4fc5ed6 KP |
3056 | } |
3057 | ||
00c09d70 | 3058 | void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
24d05927 | 3059 | { |
da63a9f2 PZ |
3060 | struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); |
3061 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
bd173813 | 3062 | struct drm_device *dev = intel_dp_to_dev(intel_dp); |
24d05927 DV |
3063 | |
3064 | i2c_del_adapter(&intel_dp->adapter); | |
3065 | drm_encoder_cleanup(encoder); | |
bd943159 KP |
3066 | if (is_edp(intel_dp)) { |
3067 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
bd173813 | 3068 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 3069 | ironlake_panel_vdd_off_sync(intel_dp); |
bd173813 | 3070 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 | 3071 | } |
da63a9f2 | 3072 | kfree(intel_dig_port); |
24d05927 DV |
3073 | } |
3074 | ||
a4fc5ed6 | 3075 | static const struct drm_connector_funcs intel_dp_connector_funcs = { |
2bd2ad64 | 3076 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
3077 | .detect = intel_dp_detect, |
3078 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 3079 | .set_property = intel_dp_set_property, |
73845adf | 3080 | .destroy = intel_dp_connector_destroy, |
a4fc5ed6 KP |
3081 | }; |
3082 | ||
3083 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
3084 | .get_modes = intel_dp_get_modes, | |
3085 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 3086 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
3087 | }; |
3088 | ||
a4fc5ed6 | 3089 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
24d05927 | 3090 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
3091 | }; |
3092 | ||
995b6762 | 3093 | static void |
21d40d37 | 3094 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 3095 | { |
fa90ecef | 3096 | struct intel_dp *intel_dp = enc_to_intel_dp(&intel_encoder->base); |
c8110e52 | 3097 | |
885a5014 | 3098 | intel_dp_check_link_status(intel_dp); |
c8110e52 | 3099 | } |
6207937d | 3100 | |
e3421a18 ZW |
3101 | /* Return which DP Port should be selected for Transcoder DP control */ |
3102 | int | |
0206e353 | 3103 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
3104 | { |
3105 | struct drm_device *dev = crtc->dev; | |
fa90ecef PZ |
3106 | struct intel_encoder *intel_encoder; |
3107 | struct intel_dp *intel_dp; | |
e3421a18 | 3108 | |
fa90ecef PZ |
3109 | for_each_encoder_on_crtc(dev, crtc, intel_encoder) { |
3110 | intel_dp = enc_to_intel_dp(&intel_encoder->base); | |
e3421a18 | 3111 | |
fa90ecef PZ |
3112 | if (intel_encoder->type == INTEL_OUTPUT_DISPLAYPORT || |
3113 | intel_encoder->type == INTEL_OUTPUT_EDP) | |
ea5b213a | 3114 | return intel_dp->output_reg; |
e3421a18 | 3115 | } |
ea5b213a | 3116 | |
e3421a18 ZW |
3117 | return -1; |
3118 | } | |
3119 | ||
36e83a18 | 3120 | /* check the VBT to see whether the eDP is on DP-D port */ |
cb0953d7 | 3121 | bool intel_dpd_is_edp(struct drm_device *dev) |
36e83a18 ZY |
3122 | { |
3123 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3124 | struct child_device_config *p_child; | |
3125 | int i; | |
3126 | ||
41aa3448 | 3127 | if (!dev_priv->vbt.child_dev_num) |
36e83a18 ZY |
3128 | return false; |
3129 | ||
41aa3448 RV |
3130 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
3131 | p_child = dev_priv->vbt.child_dev + i; | |
36e83a18 ZY |
3132 | |
3133 | if (p_child->dvo_port == PORT_IDPD && | |
3134 | p_child->device_type == DEVICE_TYPE_eDP) | |
3135 | return true; | |
3136 | } | |
3137 | return false; | |
3138 | } | |
3139 | ||
f684960e CW |
3140 | static void |
3141 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) | |
3142 | { | |
53b41837 YN |
3143 | struct intel_connector *intel_connector = to_intel_connector(connector); |
3144 | ||
3f43c48d | 3145 | intel_attach_force_audio_property(connector); |
e953fd7b | 3146 | intel_attach_broadcast_rgb_property(connector); |
55bc60db | 3147 | intel_dp->color_range_auto = true; |
53b41837 YN |
3148 | |
3149 | if (is_edp(intel_dp)) { | |
3150 | drm_mode_create_scaling_mode_property(connector->dev); | |
6de6d846 RC |
3151 | drm_object_attach_property( |
3152 | &connector->base, | |
53b41837 | 3153 | connector->dev->mode_config.scaling_mode_property, |
8e740cd1 YN |
3154 | DRM_MODE_SCALE_ASPECT); |
3155 | intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT; | |
53b41837 | 3156 | } |
f684960e CW |
3157 | } |
3158 | ||
67a54566 DV |
3159 | static void |
3160 | intel_dp_init_panel_power_sequencer(struct drm_device *dev, | |
f30d26e4 JN |
3161 | struct intel_dp *intel_dp, |
3162 | struct edp_power_seq *out) | |
67a54566 DV |
3163 | { |
3164 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3165 | struct edp_power_seq cur, vbt, spec, final; | |
3166 | u32 pp_on, pp_off, pp_div, pp; | |
453c5420 JB |
3167 | int pp_control_reg, pp_on_reg, pp_off_reg, pp_div_reg; |
3168 | ||
3169 | if (HAS_PCH_SPLIT(dev)) { | |
3170 | pp_control_reg = PCH_PP_CONTROL; | |
3171 | pp_on_reg = PCH_PP_ON_DELAYS; | |
3172 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
3173 | pp_div_reg = PCH_PP_DIVISOR; | |
3174 | } else { | |
3175 | pp_control_reg = PIPEA_PP_CONTROL; | |
3176 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
3177 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
3178 | pp_div_reg = PIPEA_PP_DIVISOR; | |
3179 | } | |
67a54566 DV |
3180 | |
3181 | /* Workaround: Need to write PP_CONTROL with the unlock key as | |
3182 | * the very first thing. */ | |
453c5420 JB |
3183 | pp = ironlake_get_pp_control(intel_dp); |
3184 | I915_WRITE(pp_control_reg, pp); | |
67a54566 | 3185 | |
453c5420 JB |
3186 | pp_on = I915_READ(pp_on_reg); |
3187 | pp_off = I915_READ(pp_off_reg); | |
3188 | pp_div = I915_READ(pp_div_reg); | |
67a54566 DV |
3189 | |
3190 | /* Pull timing values out of registers */ | |
3191 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
3192 | PANEL_POWER_UP_DELAY_SHIFT; | |
3193 | ||
3194 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
3195 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
3196 | ||
3197 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> | |
3198 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
3199 | ||
3200 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
3201 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
3202 | ||
3203 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
3204 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
3205 | ||
3206 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3207 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
3208 | ||
41aa3448 | 3209 | vbt = dev_priv->vbt.edp_pps; |
67a54566 DV |
3210 | |
3211 | /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of | |
3212 | * our hw here, which are all in 100usec. */ | |
3213 | spec.t1_t3 = 210 * 10; | |
3214 | spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ | |
3215 | spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ | |
3216 | spec.t10 = 500 * 10; | |
3217 | /* This one is special and actually in units of 100ms, but zero | |
3218 | * based in the hw (so we need to add 100 ms). But the sw vbt | |
3219 | * table multiplies it with 1000 to make it in units of 100usec, | |
3220 | * too. */ | |
3221 | spec.t11_t12 = (510 + 100) * 10; | |
3222 | ||
3223 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
3224 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
3225 | ||
3226 | /* Use the max of the register settings and vbt. If both are | |
3227 | * unset, fall back to the spec limits. */ | |
3228 | #define assign_final(field) final.field = (max(cur.field, vbt.field) == 0 ? \ | |
3229 | spec.field : \ | |
3230 | max(cur.field, vbt.field)) | |
3231 | assign_final(t1_t3); | |
3232 | assign_final(t8); | |
3233 | assign_final(t9); | |
3234 | assign_final(t10); | |
3235 | assign_final(t11_t12); | |
3236 | #undef assign_final | |
3237 | ||
3238 | #define get_delay(field) (DIV_ROUND_UP(final.field, 10)) | |
3239 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
3240 | intel_dp->backlight_on_delay = get_delay(t8); | |
3241 | intel_dp->backlight_off_delay = get_delay(t9); | |
3242 | intel_dp->panel_power_down_delay = get_delay(t10); | |
3243 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
3244 | #undef get_delay | |
3245 | ||
f30d26e4 JN |
3246 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", |
3247 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
3248 | intel_dp->panel_power_cycle_delay); | |
3249 | ||
3250 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
3251 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
3252 | ||
3253 | if (out) | |
3254 | *out = final; | |
3255 | } | |
3256 | ||
3257 | static void | |
3258 | intel_dp_init_panel_power_sequencer_registers(struct drm_device *dev, | |
3259 | struct intel_dp *intel_dp, | |
3260 | struct edp_power_seq *seq) | |
3261 | { | |
3262 | struct drm_i915_private *dev_priv = dev->dev_private; | |
453c5420 JB |
3263 | u32 pp_on, pp_off, pp_div, port_sel = 0; |
3264 | int div = HAS_PCH_SPLIT(dev) ? intel_pch_rawclk(dev) : intel_hrawclk(dev); | |
3265 | int pp_on_reg, pp_off_reg, pp_div_reg; | |
3266 | ||
3267 | if (HAS_PCH_SPLIT(dev)) { | |
3268 | pp_on_reg = PCH_PP_ON_DELAYS; | |
3269 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
3270 | pp_div_reg = PCH_PP_DIVISOR; | |
3271 | } else { | |
3272 | pp_on_reg = PIPEA_PP_ON_DELAYS; | |
3273 | pp_off_reg = PIPEA_PP_OFF_DELAYS; | |
3274 | pp_div_reg = PIPEA_PP_DIVISOR; | |
3275 | } | |
3276 | ||
67a54566 | 3277 | /* And finally store the new values in the power sequencer. */ |
f30d26e4 JN |
3278 | pp_on = (seq->t1_t3 << PANEL_POWER_UP_DELAY_SHIFT) | |
3279 | (seq->t8 << PANEL_LIGHT_ON_DELAY_SHIFT); | |
3280 | pp_off = (seq->t9 << PANEL_LIGHT_OFF_DELAY_SHIFT) | | |
3281 | (seq->t10 << PANEL_POWER_DOWN_DELAY_SHIFT); | |
67a54566 DV |
3282 | /* Compute the divisor for the pp clock, simply match the Bspec |
3283 | * formula. */ | |
453c5420 | 3284 | pp_div = ((100 * div)/2 - 1) << PP_REFERENCE_DIVIDER_SHIFT; |
f30d26e4 | 3285 | pp_div |= (DIV_ROUND_UP(seq->t11_t12, 1000) |
67a54566 DV |
3286 | << PANEL_POWER_CYCLE_DELAY_SHIFT); |
3287 | ||
3288 | /* Haswell doesn't have any port selection bits for the panel | |
3289 | * power sequencer any more. */ | |
bc7d38a4 ID |
3290 | if (IS_VALLEYVIEW(dev)) { |
3291 | port_sel = I915_READ(pp_on_reg) & 0xc0000000; | |
3292 | } else if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) { | |
3293 | if (dp_to_dig_port(intel_dp)->port == PORT_A) | |
453c5420 | 3294 | port_sel = PANEL_POWER_PORT_DP_A; |
67a54566 | 3295 | else |
453c5420 | 3296 | port_sel = PANEL_POWER_PORT_DP_D; |
67a54566 DV |
3297 | } |
3298 | ||
453c5420 JB |
3299 | pp_on |= port_sel; |
3300 | ||
3301 | I915_WRITE(pp_on_reg, pp_on); | |
3302 | I915_WRITE(pp_off_reg, pp_off); | |
3303 | I915_WRITE(pp_div_reg, pp_div); | |
67a54566 | 3304 | |
67a54566 | 3305 | DRM_DEBUG_KMS("panel power sequencer register settings: PP_ON %#x, PP_OFF %#x, PP_DIV %#x\n", |
453c5420 JB |
3306 | I915_READ(pp_on_reg), |
3307 | I915_READ(pp_off_reg), | |
3308 | I915_READ(pp_div_reg)); | |
f684960e CW |
3309 | } |
3310 | ||
ed92f0b2 PZ |
3311 | static bool intel_edp_init_connector(struct intel_dp *intel_dp, |
3312 | struct intel_connector *intel_connector) | |
3313 | { | |
3314 | struct drm_connector *connector = &intel_connector->base; | |
3315 | struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); | |
3316 | struct drm_device *dev = intel_dig_port->base.base.dev; | |
3317 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3318 | struct drm_display_mode *fixed_mode = NULL; | |
3319 | struct edp_power_seq power_seq = { 0 }; | |
3320 | bool has_dpcd; | |
3321 | struct drm_display_mode *scan; | |
3322 | struct edid *edid; | |
3323 | ||
3324 | if (!is_edp(intel_dp)) | |
3325 | return true; | |
3326 | ||
3327 | intel_dp_init_panel_power_sequencer(dev, intel_dp, &power_seq); | |
3328 | ||
3329 | /* Cache DPCD and EDID for edp. */ | |
3330 | ironlake_edp_panel_vdd_on(intel_dp); | |
3331 | has_dpcd = intel_dp_get_dpcd(intel_dp); | |
3332 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
3333 | ||
3334 | if (has_dpcd) { | |
3335 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) | |
3336 | dev_priv->no_aux_handshake = | |
3337 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
3338 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; | |
3339 | } else { | |
3340 | /* if this fails, presume the device is a ghost */ | |
3341 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); | |
ed92f0b2 PZ |
3342 | return false; |
3343 | } | |
3344 | ||
3345 | /* We now know it's not a ghost, init power sequence regs. */ | |
3346 | intel_dp_init_panel_power_sequencer_registers(dev, intel_dp, | |
3347 | &power_seq); | |
3348 | ||
3349 | ironlake_edp_panel_vdd_on(intel_dp); | |
3350 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
3351 | if (edid) { | |
3352 | if (drm_add_edid_modes(connector, edid)) { | |
3353 | drm_mode_connector_update_edid_property(connector, | |
3354 | edid); | |
3355 | drm_edid_to_eld(connector, edid); | |
3356 | } else { | |
3357 | kfree(edid); | |
3358 | edid = ERR_PTR(-EINVAL); | |
3359 | } | |
3360 | } else { | |
3361 | edid = ERR_PTR(-ENOENT); | |
3362 | } | |
3363 | intel_connector->edid = edid; | |
3364 | ||
3365 | /* prefer fixed mode from EDID if available */ | |
3366 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
3367 | if ((scan->type & DRM_MODE_TYPE_PREFERRED)) { | |
3368 | fixed_mode = drm_mode_duplicate(dev, scan); | |
3369 | break; | |
3370 | } | |
3371 | } | |
3372 | ||
3373 | /* fallback to VBT if available for eDP */ | |
3374 | if (!fixed_mode && dev_priv->vbt.lfp_lvds_vbt_mode) { | |
3375 | fixed_mode = drm_mode_duplicate(dev, | |
3376 | dev_priv->vbt.lfp_lvds_vbt_mode); | |
3377 | if (fixed_mode) | |
3378 | fixed_mode->type |= DRM_MODE_TYPE_PREFERRED; | |
3379 | } | |
3380 | ||
3381 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
3382 | ||
3383 | intel_panel_init(&intel_connector->panel, fixed_mode); | |
3384 | intel_panel_setup_backlight(connector); | |
3385 | ||
3386 | return true; | |
3387 | } | |
3388 | ||
16c25533 | 3389 | bool |
f0fec3f2 PZ |
3390 | intel_dp_init_connector(struct intel_digital_port *intel_dig_port, |
3391 | struct intel_connector *intel_connector) | |
a4fc5ed6 | 3392 | { |
f0fec3f2 PZ |
3393 | struct drm_connector *connector = &intel_connector->base; |
3394 | struct intel_dp *intel_dp = &intel_dig_port->dp; | |
3395 | struct intel_encoder *intel_encoder = &intel_dig_port->base; | |
3396 | struct drm_device *dev = intel_encoder->base.dev; | |
a4fc5ed6 | 3397 | struct drm_i915_private *dev_priv = dev->dev_private; |
174edf1f | 3398 | enum port port = intel_dig_port->port; |
5eb08b69 | 3399 | const char *name = NULL; |
b2a14755 | 3400 | int type, error; |
a4fc5ed6 | 3401 | |
0767935e DV |
3402 | /* Preserve the current hw state. */ |
3403 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
dd06f90e | 3404 | intel_dp->attached_connector = intel_connector; |
3d3dc149 | 3405 | |
f7d24902 | 3406 | type = DRM_MODE_CONNECTOR_DisplayPort; |
19c03924 GB |
3407 | /* |
3408 | * FIXME : We need to initialize built-in panels before external panels. | |
3409 | * For X0, DP_C is fixed as eDP. Revisit this as part of VLV eDP cleanup | |
3410 | */ | |
f7d24902 ID |
3411 | switch (port) { |
3412 | case PORT_A: | |
b329530c | 3413 | type = DRM_MODE_CONNECTOR_eDP; |
f7d24902 ID |
3414 | break; |
3415 | case PORT_C: | |
3416 | if (IS_VALLEYVIEW(dev)) | |
3417 | type = DRM_MODE_CONNECTOR_eDP; | |
3418 | break; | |
3419 | case PORT_D: | |
3420 | if (HAS_PCH_SPLIT(dev) && intel_dpd_is_edp(dev)) | |
3421 | type = DRM_MODE_CONNECTOR_eDP; | |
3422 | break; | |
3423 | default: /* silence GCC warning */ | |
3424 | break; | |
b329530c AJ |
3425 | } |
3426 | ||
f7d24902 ID |
3427 | /* |
3428 | * For eDP we always set the encoder type to INTEL_OUTPUT_EDP, but | |
3429 | * for DP the encoder type can be set by the caller to | |
3430 | * INTEL_OUTPUT_UNKNOWN for DDI, so don't rewrite it. | |
3431 | */ | |
3432 | if (type == DRM_MODE_CONNECTOR_eDP) | |
3433 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
3434 | ||
e7281eab ID |
3435 | DRM_DEBUG_KMS("Adding %s connector on port %c\n", |
3436 | type == DRM_MODE_CONNECTOR_eDP ? "eDP" : "DP", | |
3437 | port_name(port)); | |
3438 | ||
b329530c | 3439 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
3440 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
3441 | ||
a4fc5ed6 KP |
3442 | connector->interlace_allowed = true; |
3443 | connector->doublescan_allowed = 0; | |
3444 | ||
f0fec3f2 PZ |
3445 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
3446 | ironlake_panel_vdd_work); | |
a4fc5ed6 | 3447 | |
df0e9248 | 3448 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 KP |
3449 | drm_sysfs_connector_add(connector); |
3450 | ||
affa9354 | 3451 | if (HAS_DDI(dev)) |
bcbc889b PZ |
3452 | intel_connector->get_hw_state = intel_ddi_connector_get_hw_state; |
3453 | else | |
3454 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
3455 | ||
9ed35ab1 PZ |
3456 | intel_dp->aux_ch_ctl_reg = intel_dp->output_reg + 0x10; |
3457 | if (HAS_DDI(dev)) { | |
3458 | switch (intel_dig_port->port) { | |
3459 | case PORT_A: | |
3460 | intel_dp->aux_ch_ctl_reg = DPA_AUX_CH_CTL; | |
3461 | break; | |
3462 | case PORT_B: | |
3463 | intel_dp->aux_ch_ctl_reg = PCH_DPB_AUX_CH_CTL; | |
3464 | break; | |
3465 | case PORT_C: | |
3466 | intel_dp->aux_ch_ctl_reg = PCH_DPC_AUX_CH_CTL; | |
3467 | break; | |
3468 | case PORT_D: | |
3469 | intel_dp->aux_ch_ctl_reg = PCH_DPD_AUX_CH_CTL; | |
3470 | break; | |
3471 | default: | |
3472 | BUG(); | |
3473 | } | |
3474 | } | |
e8cb4558 | 3475 | |
a4fc5ed6 | 3476 | /* Set up the DDC bus. */ |
ab9d7c30 PZ |
3477 | switch (port) { |
3478 | case PORT_A: | |
1d843f9d | 3479 | intel_encoder->hpd_pin = HPD_PORT_A; |
ab9d7c30 PZ |
3480 | name = "DPDDC-A"; |
3481 | break; | |
3482 | case PORT_B: | |
1d843f9d | 3483 | intel_encoder->hpd_pin = HPD_PORT_B; |
ab9d7c30 PZ |
3484 | name = "DPDDC-B"; |
3485 | break; | |
3486 | case PORT_C: | |
1d843f9d | 3487 | intel_encoder->hpd_pin = HPD_PORT_C; |
ab9d7c30 PZ |
3488 | name = "DPDDC-C"; |
3489 | break; | |
3490 | case PORT_D: | |
1d843f9d | 3491 | intel_encoder->hpd_pin = HPD_PORT_D; |
ab9d7c30 PZ |
3492 | name = "DPDDC-D"; |
3493 | break; | |
3494 | default: | |
ad1c0b19 | 3495 | BUG(); |
5eb08b69 ZW |
3496 | } |
3497 | ||
b2a14755 PZ |
3498 | error = intel_dp_i2c_init(intel_dp, intel_connector, name); |
3499 | WARN(error, "intel_dp_i2c_init failed with error %d for port %c\n", | |
3500 | error, port_name(port)); | |
c1f05264 | 3501 | |
2b28bb1b RV |
3502 | intel_dp->psr_setup_done = false; |
3503 | ||
b2f246a8 | 3504 | if (!intel_edp_init_connector(intel_dp, intel_connector)) { |
15b1d171 PZ |
3505 | i2c_del_adapter(&intel_dp->adapter); |
3506 | if (is_edp(intel_dp)) { | |
3507 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); | |
3508 | mutex_lock(&dev->mode_config.mutex); | |
3509 | ironlake_panel_vdd_off_sync(intel_dp); | |
3510 | mutex_unlock(&dev->mode_config.mutex); | |
3511 | } | |
b2f246a8 PZ |
3512 | drm_sysfs_connector_remove(connector); |
3513 | drm_connector_cleanup(connector); | |
16c25533 | 3514 | return false; |
b2f246a8 | 3515 | } |
32f9d658 | 3516 | |
f684960e CW |
3517 | intel_dp_add_properties(intel_dp, connector); |
3518 | ||
a4fc5ed6 KP |
3519 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
3520 | * 0xd. Failure to do so will result in spurious interrupts being | |
3521 | * generated on the port when a cable is not attached. | |
3522 | */ | |
3523 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
3524 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
3525 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
3526 | } | |
16c25533 PZ |
3527 | |
3528 | return true; | |
a4fc5ed6 | 3529 | } |
f0fec3f2 PZ |
3530 | |
3531 | void | |
3532 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) | |
3533 | { | |
3534 | struct intel_digital_port *intel_dig_port; | |
3535 | struct intel_encoder *intel_encoder; | |
3536 | struct drm_encoder *encoder; | |
3537 | struct intel_connector *intel_connector; | |
3538 | ||
3539 | intel_dig_port = kzalloc(sizeof(struct intel_digital_port), GFP_KERNEL); | |
3540 | if (!intel_dig_port) | |
3541 | return; | |
3542 | ||
3543 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); | |
3544 | if (!intel_connector) { | |
3545 | kfree(intel_dig_port); | |
3546 | return; | |
3547 | } | |
3548 | ||
3549 | intel_encoder = &intel_dig_port->base; | |
3550 | encoder = &intel_encoder->base; | |
3551 | ||
3552 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, | |
3553 | DRM_MODE_ENCODER_TMDS); | |
3554 | ||
5bfe2ac0 | 3555 | intel_encoder->compute_config = intel_dp_compute_config; |
b934223d | 3556 | intel_encoder->mode_set = intel_dp_mode_set; |
00c09d70 PZ |
3557 | intel_encoder->disable = intel_disable_dp; |
3558 | intel_encoder->post_disable = intel_post_disable_dp; | |
3559 | intel_encoder->get_hw_state = intel_dp_get_hw_state; | |
045ac3b5 | 3560 | intel_encoder->get_config = intel_dp_get_config; |
ab1f90f9 | 3561 | if (IS_VALLEYVIEW(dev)) { |
89b667f8 | 3562 | intel_encoder->pre_pll_enable = intel_dp_pre_pll_enable; |
ab1f90f9 JN |
3563 | intel_encoder->pre_enable = vlv_pre_enable_dp; |
3564 | intel_encoder->enable = vlv_enable_dp; | |
3565 | } else { | |
3566 | intel_encoder->pre_enable = intel_pre_enable_dp; | |
3567 | intel_encoder->enable = intel_enable_dp; | |
3568 | } | |
f0fec3f2 | 3569 | |
174edf1f | 3570 | intel_dig_port->port = port; |
f0fec3f2 PZ |
3571 | intel_dig_port->dp.output_reg = output_reg; |
3572 | ||
00c09d70 | 3573 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; |
f0fec3f2 PZ |
3574 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
3575 | intel_encoder->cloneable = false; | |
3576 | intel_encoder->hot_plug = intel_dp_hot_plug; | |
3577 | ||
15b1d171 PZ |
3578 | if (!intel_dp_init_connector(intel_dig_port, intel_connector)) { |
3579 | drm_encoder_cleanup(encoder); | |
3580 | kfree(intel_dig_port); | |
b2f246a8 | 3581 | kfree(intel_connector); |
15b1d171 | 3582 | } |
f0fec3f2 | 3583 | } |