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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> |
a4fc5ed6 KP |
31 | #include "drmP.h" |
32 | #include "drm.h" | |
33 | #include "drm_crtc.h" | |
34 | #include "drm_crtc_helper.h" | |
d6f24d0f | 35 | #include "drm_edid.h" |
a4fc5ed6 KP |
36 | #include "intel_drv.h" |
37 | #include "i915_drm.h" | |
38 | #include "i915_drv.h" | |
a4fc5ed6 | 39 | |
edb39244 | 40 | #define DP_RECEIVER_CAP_SIZE 0xf |
a4fc5ed6 KP |
41 | #define DP_LINK_STATUS_SIZE 6 |
42 | #define DP_LINK_CHECK_TIMEOUT (10 * 1000) | |
43 | ||
cfcb0fc9 JB |
44 | /** |
45 | * is_edp - is the given port attached to an eDP panel (either CPU or PCH) | |
46 | * @intel_dp: DP struct | |
47 | * | |
48 | * If a CPU or PCH DP output is attached to an eDP panel, this function | |
49 | * will return true, and false otherwise. | |
50 | */ | |
51 | static bool is_edp(struct intel_dp *intel_dp) | |
52 | { | |
53 | return intel_dp->base.type == INTEL_OUTPUT_EDP; | |
54 | } | |
55 | ||
56 | /** | |
57 | * is_pch_edp - is the port on the PCH and attached to an eDP panel? | |
58 | * @intel_dp: DP struct | |
59 | * | |
60 | * Returns true if the given DP struct corresponds to a PCH DP port attached | |
61 | * to an eDP panel, false otherwise. Helpful for determining whether we | |
62 | * may need FDI resources for a given DP output or not. | |
63 | */ | |
64 | static bool is_pch_edp(struct intel_dp *intel_dp) | |
65 | { | |
66 | return intel_dp->is_pch_edp; | |
67 | } | |
68 | ||
1c95822a AJ |
69 | /** |
70 | * is_cpu_edp - is the port on the CPU and attached to an eDP panel? | |
71 | * @intel_dp: DP struct | |
72 | * | |
73 | * Returns true if the given DP struct corresponds to a CPU eDP port. | |
74 | */ | |
75 | static bool is_cpu_edp(struct intel_dp *intel_dp) | |
76 | { | |
77 | return is_edp(intel_dp) && !is_pch_edp(intel_dp); | |
78 | } | |
79 | ||
ea5b213a CW |
80 | static struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder) |
81 | { | |
4ef69c7a | 82 | return container_of(encoder, struct intel_dp, base.base); |
ea5b213a | 83 | } |
a4fc5ed6 | 84 | |
df0e9248 CW |
85 | static struct intel_dp *intel_attached_dp(struct drm_connector *connector) |
86 | { | |
87 | return container_of(intel_attached_encoder(connector), | |
88 | struct intel_dp, base); | |
89 | } | |
90 | ||
814948ad JB |
91 | /** |
92 | * intel_encoder_is_pch_edp - is the given encoder a PCH attached eDP? | |
93 | * @encoder: DRM encoder | |
94 | * | |
95 | * Return true if @encoder corresponds to a PCH attached eDP panel. Needed | |
96 | * by intel_display.c. | |
97 | */ | |
98 | bool intel_encoder_is_pch_edp(struct drm_encoder *encoder) | |
99 | { | |
100 | struct intel_dp *intel_dp; | |
101 | ||
102 | if (!encoder) | |
103 | return false; | |
104 | ||
105 | intel_dp = enc_to_intel_dp(encoder); | |
106 | ||
107 | return is_pch_edp(intel_dp); | |
108 | } | |
109 | ||
33a34e4e JB |
110 | static void intel_dp_start_link_train(struct intel_dp *intel_dp); |
111 | static void intel_dp_complete_link_train(struct intel_dp *intel_dp); | |
ea5b213a | 112 | static void intel_dp_link_down(struct intel_dp *intel_dp); |
a4fc5ed6 | 113 | |
32f9d658 | 114 | void |
0206e353 | 115 | intel_edp_link_config(struct intel_encoder *intel_encoder, |
ea5b213a | 116 | int *lane_num, int *link_bw) |
32f9d658 | 117 | { |
ea5b213a | 118 | struct intel_dp *intel_dp = container_of(intel_encoder, struct intel_dp, base); |
32f9d658 | 119 | |
ea5b213a CW |
120 | *lane_num = intel_dp->lane_count; |
121 | if (intel_dp->link_bw == DP_LINK_BW_1_62) | |
32f9d658 | 122 | *link_bw = 162000; |
ea5b213a | 123 | else if (intel_dp->link_bw == DP_LINK_BW_2_7) |
32f9d658 ZW |
124 | *link_bw = 270000; |
125 | } | |
126 | ||
94bf2ced DV |
127 | int |
128 | intel_edp_target_clock(struct intel_encoder *intel_encoder, | |
129 | struct drm_display_mode *mode) | |
130 | { | |
131 | struct intel_dp *intel_dp = container_of(intel_encoder, struct intel_dp, base); | |
132 | ||
133 | if (intel_dp->panel_fixed_mode) | |
134 | return intel_dp->panel_fixed_mode->clock; | |
135 | else | |
136 | return mode->clock; | |
137 | } | |
138 | ||
a4fc5ed6 | 139 | static int |
ea5b213a | 140 | intel_dp_max_lane_count(struct intel_dp *intel_dp) |
a4fc5ed6 | 141 | { |
9a10f401 KP |
142 | int max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f; |
143 | switch (max_lane_count) { | |
144 | case 1: case 2: case 4: | |
145 | break; | |
146 | default: | |
147 | max_lane_count = 4; | |
a4fc5ed6 KP |
148 | } |
149 | return max_lane_count; | |
150 | } | |
151 | ||
152 | static int | |
ea5b213a | 153 | intel_dp_max_link_bw(struct intel_dp *intel_dp) |
a4fc5ed6 | 154 | { |
7183dc29 | 155 | int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; |
a4fc5ed6 KP |
156 | |
157 | switch (max_link_bw) { | |
158 | case DP_LINK_BW_1_62: | |
159 | case DP_LINK_BW_2_7: | |
160 | break; | |
161 | default: | |
162 | max_link_bw = DP_LINK_BW_1_62; | |
163 | break; | |
164 | } | |
165 | return max_link_bw; | |
166 | } | |
167 | ||
168 | static int | |
169 | intel_dp_link_clock(uint8_t link_bw) | |
170 | { | |
171 | if (link_bw == DP_LINK_BW_2_7) | |
172 | return 270000; | |
173 | else | |
174 | return 162000; | |
175 | } | |
176 | ||
cd9dde44 AJ |
177 | /* |
178 | * The units on the numbers in the next two are... bizarre. Examples will | |
179 | * make it clearer; this one parallels an example in the eDP spec. | |
180 | * | |
181 | * intel_dp_max_data_rate for one lane of 2.7GHz evaluates as: | |
182 | * | |
183 | * 270000 * 1 * 8 / 10 == 216000 | |
184 | * | |
185 | * The actual data capacity of that configuration is 2.16Gbit/s, so the | |
186 | * units are decakilobits. ->clock in a drm_display_mode is in kilohertz - | |
187 | * or equivalently, kilopixels per second - so for 1680x1050R it'd be | |
188 | * 119000. At 18bpp that's 2142000 kilobits per second. | |
189 | * | |
190 | * Thus the strange-looking division by 10 in intel_dp_link_required, to | |
191 | * get the result in decakilobits instead of kilobits. | |
192 | */ | |
193 | ||
a4fc5ed6 | 194 | static int |
c898261c | 195 | intel_dp_link_required(int pixel_clock, int bpp) |
a4fc5ed6 | 196 | { |
cd9dde44 | 197 | return (pixel_clock * bpp + 9) / 10; |
a4fc5ed6 KP |
198 | } |
199 | ||
fe27d53e DA |
200 | static int |
201 | intel_dp_max_data_rate(int max_link_clock, int max_lanes) | |
202 | { | |
203 | return (max_link_clock * max_lanes * 8) / 10; | |
204 | } | |
205 | ||
c4867936 DV |
206 | static bool |
207 | intel_dp_adjust_dithering(struct intel_dp *intel_dp, | |
208 | struct drm_display_mode *mode, | |
cb1793ce | 209 | bool adjust_mode) |
c4867936 DV |
210 | { |
211 | int max_link_clock = intel_dp_link_clock(intel_dp_max_link_bw(intel_dp)); | |
212 | int max_lanes = intel_dp_max_lane_count(intel_dp); | |
213 | int max_rate, mode_rate; | |
214 | ||
215 | mode_rate = intel_dp_link_required(mode->clock, 24); | |
216 | max_rate = intel_dp_max_data_rate(max_link_clock, max_lanes); | |
217 | ||
218 | if (mode_rate > max_rate) { | |
219 | mode_rate = intel_dp_link_required(mode->clock, 18); | |
220 | if (mode_rate > max_rate) | |
221 | return false; | |
222 | ||
cb1793ce DV |
223 | if (adjust_mode) |
224 | mode->private_flags | |
c4867936 DV |
225 | |= INTEL_MODE_DP_FORCE_6BPC; |
226 | ||
227 | return true; | |
228 | } | |
229 | ||
230 | return true; | |
231 | } | |
232 | ||
a4fc5ed6 KP |
233 | static int |
234 | intel_dp_mode_valid(struct drm_connector *connector, | |
235 | struct drm_display_mode *mode) | |
236 | { | |
df0e9248 | 237 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
a4fc5ed6 | 238 | |
d15456de KP |
239 | if (is_edp(intel_dp) && intel_dp->panel_fixed_mode) { |
240 | if (mode->hdisplay > intel_dp->panel_fixed_mode->hdisplay) | |
7de56f43 ZY |
241 | return MODE_PANEL; |
242 | ||
d15456de | 243 | if (mode->vdisplay > intel_dp->panel_fixed_mode->vdisplay) |
7de56f43 ZY |
244 | return MODE_PANEL; |
245 | } | |
246 | ||
cb1793ce | 247 | if (!intel_dp_adjust_dithering(intel_dp, mode, false)) |
c4867936 | 248 | return MODE_CLOCK_HIGH; |
a4fc5ed6 KP |
249 | |
250 | if (mode->clock < 10000) | |
251 | return MODE_CLOCK_LOW; | |
252 | ||
0af78a2b DV |
253 | if (mode->flags & DRM_MODE_FLAG_DBLCLK) |
254 | return MODE_H_ILLEGAL; | |
255 | ||
a4fc5ed6 KP |
256 | return MODE_OK; |
257 | } | |
258 | ||
259 | static uint32_t | |
260 | pack_aux(uint8_t *src, int src_bytes) | |
261 | { | |
262 | int i; | |
263 | uint32_t v = 0; | |
264 | ||
265 | if (src_bytes > 4) | |
266 | src_bytes = 4; | |
267 | for (i = 0; i < src_bytes; i++) | |
268 | v |= ((uint32_t) src[i]) << ((3-i) * 8); | |
269 | return v; | |
270 | } | |
271 | ||
272 | static void | |
273 | unpack_aux(uint32_t src, uint8_t *dst, int dst_bytes) | |
274 | { | |
275 | int i; | |
276 | if (dst_bytes > 4) | |
277 | dst_bytes = 4; | |
278 | for (i = 0; i < dst_bytes; i++) | |
279 | dst[i] = src >> ((3-i) * 8); | |
280 | } | |
281 | ||
fb0f8fbf KP |
282 | /* hrawclock is 1/4 the FSB frequency */ |
283 | static int | |
284 | intel_hrawclk(struct drm_device *dev) | |
285 | { | |
286 | struct drm_i915_private *dev_priv = dev->dev_private; | |
287 | uint32_t clkcfg; | |
288 | ||
289 | clkcfg = I915_READ(CLKCFG); | |
290 | switch (clkcfg & CLKCFG_FSB_MASK) { | |
291 | case CLKCFG_FSB_400: | |
292 | return 100; | |
293 | case CLKCFG_FSB_533: | |
294 | return 133; | |
295 | case CLKCFG_FSB_667: | |
296 | return 166; | |
297 | case CLKCFG_FSB_800: | |
298 | return 200; | |
299 | case CLKCFG_FSB_1067: | |
300 | return 266; | |
301 | case CLKCFG_FSB_1333: | |
302 | return 333; | |
303 | /* these two are just a guess; one of them might be right */ | |
304 | case CLKCFG_FSB_1600: | |
305 | case CLKCFG_FSB_1600_ALT: | |
306 | return 400; | |
307 | default: | |
308 | return 133; | |
309 | } | |
310 | } | |
311 | ||
ebf33b18 KP |
312 | static bool ironlake_edp_have_panel_power(struct intel_dp *intel_dp) |
313 | { | |
314 | struct drm_device *dev = intel_dp->base.base.dev; | |
315 | struct drm_i915_private *dev_priv = dev->dev_private; | |
316 | ||
317 | return (I915_READ(PCH_PP_STATUS) & PP_ON) != 0; | |
318 | } | |
319 | ||
320 | static bool ironlake_edp_have_panel_vdd(struct intel_dp *intel_dp) | |
321 | { | |
322 | struct drm_device *dev = intel_dp->base.base.dev; | |
323 | struct drm_i915_private *dev_priv = dev->dev_private; | |
324 | ||
325 | return (I915_READ(PCH_PP_CONTROL) & EDP_FORCE_VDD) != 0; | |
326 | } | |
327 | ||
9b984dae KP |
328 | static void |
329 | intel_dp_check_edp(struct intel_dp *intel_dp) | |
330 | { | |
331 | struct drm_device *dev = intel_dp->base.base.dev; | |
332 | struct drm_i915_private *dev_priv = dev->dev_private; | |
ebf33b18 | 333 | |
9b984dae KP |
334 | if (!is_edp(intel_dp)) |
335 | return; | |
ebf33b18 | 336 | if (!ironlake_edp_have_panel_power(intel_dp) && !ironlake_edp_have_panel_vdd(intel_dp)) { |
9b984dae KP |
337 | WARN(1, "eDP powered off while attempting aux channel communication.\n"); |
338 | DRM_DEBUG_KMS("Status 0x%08x Control 0x%08x\n", | |
ebf33b18 | 339 | I915_READ(PCH_PP_STATUS), |
9b984dae KP |
340 | I915_READ(PCH_PP_CONTROL)); |
341 | } | |
342 | } | |
343 | ||
a4fc5ed6 | 344 | static int |
ea5b213a | 345 | intel_dp_aux_ch(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
346 | uint8_t *send, int send_bytes, |
347 | uint8_t *recv, int recv_size) | |
348 | { | |
ea5b213a | 349 | uint32_t output_reg = intel_dp->output_reg; |
4ef69c7a | 350 | struct drm_device *dev = intel_dp->base.base.dev; |
a4fc5ed6 KP |
351 | struct drm_i915_private *dev_priv = dev->dev_private; |
352 | uint32_t ch_ctl = output_reg + 0x10; | |
353 | uint32_t ch_data = ch_ctl + 4; | |
354 | int i; | |
355 | int recv_bytes; | |
a4fc5ed6 | 356 | uint32_t status; |
fb0f8fbf | 357 | uint32_t aux_clock_divider; |
6b4e0a93 | 358 | int try, precharge; |
a4fc5ed6 | 359 | |
9b984dae | 360 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 | 361 | /* The clock divider is based off the hrawclk, |
fb0f8fbf KP |
362 | * and would like to run at 2MHz. So, take the |
363 | * hrawclk value and divide by 2 and use that | |
6176b8f9 JB |
364 | * |
365 | * Note that PCH attached eDP panels should use a 125MHz input | |
366 | * clock divider. | |
a4fc5ed6 | 367 | */ |
1c95822a | 368 | if (is_cpu_edp(intel_dp)) { |
1a2eb460 KP |
369 | if (IS_GEN6(dev) || IS_GEN7(dev)) |
370 | aux_clock_divider = 200; /* SNB & IVB eDP input clock at 400Mhz */ | |
e3421a18 ZW |
371 | else |
372 | aux_clock_divider = 225; /* eDP input clock at 450Mhz */ | |
373 | } else if (HAS_PCH_SPLIT(dev)) | |
6919132e | 374 | aux_clock_divider = 63; /* IRL input clock fixed at 125Mhz */ |
5eb08b69 ZW |
375 | else |
376 | aux_clock_divider = intel_hrawclk(dev) / 2; | |
377 | ||
6b4e0a93 DV |
378 | if (IS_GEN6(dev)) |
379 | precharge = 3; | |
380 | else | |
381 | precharge = 5; | |
382 | ||
11bee43e JB |
383 | /* Try to wait for any previous AUX channel activity */ |
384 | for (try = 0; try < 3; try++) { | |
385 | status = I915_READ(ch_ctl); | |
386 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) | |
387 | break; | |
388 | msleep(1); | |
389 | } | |
390 | ||
391 | if (try == 3) { | |
392 | WARN(1, "dp_aux_ch not started status 0x%08x\n", | |
393 | I915_READ(ch_ctl)); | |
4f7f7b7e CW |
394 | return -EBUSY; |
395 | } | |
396 | ||
fb0f8fbf KP |
397 | /* Must try at least 3 times according to DP spec */ |
398 | for (try = 0; try < 5; try++) { | |
399 | /* Load the send data into the aux channel data registers */ | |
4f7f7b7e CW |
400 | for (i = 0; i < send_bytes; i += 4) |
401 | I915_WRITE(ch_data + i, | |
402 | pack_aux(send + i, send_bytes - i)); | |
0206e353 | 403 | |
fb0f8fbf | 404 | /* Send the command and wait for it to complete */ |
4f7f7b7e CW |
405 | I915_WRITE(ch_ctl, |
406 | DP_AUX_CH_CTL_SEND_BUSY | | |
407 | DP_AUX_CH_CTL_TIME_OUT_400us | | |
408 | (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) | | |
409 | (precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) | | |
410 | (aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT) | | |
411 | DP_AUX_CH_CTL_DONE | | |
412 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
413 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
fb0f8fbf | 414 | for (;;) { |
fb0f8fbf KP |
415 | status = I915_READ(ch_ctl); |
416 | if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0) | |
417 | break; | |
4f7f7b7e | 418 | udelay(100); |
fb0f8fbf | 419 | } |
0206e353 | 420 | |
fb0f8fbf | 421 | /* Clear done status and any errors */ |
4f7f7b7e CW |
422 | I915_WRITE(ch_ctl, |
423 | status | | |
424 | DP_AUX_CH_CTL_DONE | | |
425 | DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
426 | DP_AUX_CH_CTL_RECEIVE_ERROR); | |
d7e96fea AJ |
427 | |
428 | if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | | |
429 | DP_AUX_CH_CTL_RECEIVE_ERROR)) | |
430 | continue; | |
4f7f7b7e | 431 | if (status & DP_AUX_CH_CTL_DONE) |
a4fc5ed6 KP |
432 | break; |
433 | } | |
434 | ||
a4fc5ed6 | 435 | if ((status & DP_AUX_CH_CTL_DONE) == 0) { |
1ae8c0a5 | 436 | DRM_ERROR("dp_aux_ch not done status 0x%08x\n", status); |
a5b3da54 | 437 | return -EBUSY; |
a4fc5ed6 KP |
438 | } |
439 | ||
440 | /* Check for timeout or receive error. | |
441 | * Timeouts occur when the sink is not connected | |
442 | */ | |
a5b3da54 | 443 | if (status & DP_AUX_CH_CTL_RECEIVE_ERROR) { |
1ae8c0a5 | 444 | DRM_ERROR("dp_aux_ch receive error status 0x%08x\n", status); |
a5b3da54 KP |
445 | return -EIO; |
446 | } | |
1ae8c0a5 KP |
447 | |
448 | /* Timeouts occur when the device isn't connected, so they're | |
449 | * "normal" -- don't fill the kernel log with these */ | |
a5b3da54 | 450 | if (status & DP_AUX_CH_CTL_TIME_OUT_ERROR) { |
28c97730 | 451 | DRM_DEBUG_KMS("dp_aux_ch timeout status 0x%08x\n", status); |
a5b3da54 | 452 | return -ETIMEDOUT; |
a4fc5ed6 KP |
453 | } |
454 | ||
455 | /* Unload any bytes sent back from the other side */ | |
456 | recv_bytes = ((status & DP_AUX_CH_CTL_MESSAGE_SIZE_MASK) >> | |
457 | DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT); | |
a4fc5ed6 KP |
458 | if (recv_bytes > recv_size) |
459 | recv_bytes = recv_size; | |
0206e353 | 460 | |
4f7f7b7e CW |
461 | for (i = 0; i < recv_bytes; i += 4) |
462 | unpack_aux(I915_READ(ch_data + i), | |
463 | recv + i, recv_bytes - i); | |
a4fc5ed6 KP |
464 | |
465 | return recv_bytes; | |
466 | } | |
467 | ||
468 | /* Write data to the aux channel in native mode */ | |
469 | static int | |
ea5b213a | 470 | intel_dp_aux_native_write(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
471 | uint16_t address, uint8_t *send, int send_bytes) |
472 | { | |
473 | int ret; | |
474 | uint8_t msg[20]; | |
475 | int msg_bytes; | |
476 | uint8_t ack; | |
477 | ||
9b984dae | 478 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
479 | if (send_bytes > 16) |
480 | return -1; | |
481 | msg[0] = AUX_NATIVE_WRITE << 4; | |
482 | msg[1] = address >> 8; | |
eebc863e | 483 | msg[2] = address & 0xff; |
a4fc5ed6 KP |
484 | msg[3] = send_bytes - 1; |
485 | memcpy(&msg[4], send, send_bytes); | |
486 | msg_bytes = send_bytes + 4; | |
487 | for (;;) { | |
ea5b213a | 488 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, &ack, 1); |
a4fc5ed6 KP |
489 | if (ret < 0) |
490 | return ret; | |
491 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) | |
492 | break; | |
493 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
494 | udelay(100); | |
495 | else | |
a5b3da54 | 496 | return -EIO; |
a4fc5ed6 KP |
497 | } |
498 | return send_bytes; | |
499 | } | |
500 | ||
501 | /* Write a single byte to the aux channel in native mode */ | |
502 | static int | |
ea5b213a | 503 | intel_dp_aux_native_write_1(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
504 | uint16_t address, uint8_t byte) |
505 | { | |
ea5b213a | 506 | return intel_dp_aux_native_write(intel_dp, address, &byte, 1); |
a4fc5ed6 KP |
507 | } |
508 | ||
509 | /* read bytes from a native aux channel */ | |
510 | static int | |
ea5b213a | 511 | intel_dp_aux_native_read(struct intel_dp *intel_dp, |
a4fc5ed6 KP |
512 | uint16_t address, uint8_t *recv, int recv_bytes) |
513 | { | |
514 | uint8_t msg[4]; | |
515 | int msg_bytes; | |
516 | uint8_t reply[20]; | |
517 | int reply_bytes; | |
518 | uint8_t ack; | |
519 | int ret; | |
520 | ||
9b984dae | 521 | intel_dp_check_edp(intel_dp); |
a4fc5ed6 KP |
522 | msg[0] = AUX_NATIVE_READ << 4; |
523 | msg[1] = address >> 8; | |
524 | msg[2] = address & 0xff; | |
525 | msg[3] = recv_bytes - 1; | |
526 | ||
527 | msg_bytes = 4; | |
528 | reply_bytes = recv_bytes + 1; | |
529 | ||
530 | for (;;) { | |
ea5b213a | 531 | ret = intel_dp_aux_ch(intel_dp, msg, msg_bytes, |
a4fc5ed6 | 532 | reply, reply_bytes); |
a5b3da54 KP |
533 | if (ret == 0) |
534 | return -EPROTO; | |
535 | if (ret < 0) | |
a4fc5ed6 KP |
536 | return ret; |
537 | ack = reply[0]; | |
538 | if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK) { | |
539 | memcpy(recv, reply + 1, ret - 1); | |
540 | return ret - 1; | |
541 | } | |
542 | else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) | |
543 | udelay(100); | |
544 | else | |
a5b3da54 | 545 | return -EIO; |
a4fc5ed6 KP |
546 | } |
547 | } | |
548 | ||
549 | static int | |
ab2c0672 DA |
550 | intel_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
551 | uint8_t write_byte, uint8_t *read_byte) | |
a4fc5ed6 | 552 | { |
ab2c0672 | 553 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
ea5b213a CW |
554 | struct intel_dp *intel_dp = container_of(adapter, |
555 | struct intel_dp, | |
556 | adapter); | |
ab2c0672 DA |
557 | uint16_t address = algo_data->address; |
558 | uint8_t msg[5]; | |
559 | uint8_t reply[2]; | |
8316f337 | 560 | unsigned retry; |
ab2c0672 DA |
561 | int msg_bytes; |
562 | int reply_bytes; | |
563 | int ret; | |
564 | ||
9b984dae | 565 | intel_dp_check_edp(intel_dp); |
ab2c0672 DA |
566 | /* Set up the command byte */ |
567 | if (mode & MODE_I2C_READ) | |
568 | msg[0] = AUX_I2C_READ << 4; | |
569 | else | |
570 | msg[0] = AUX_I2C_WRITE << 4; | |
571 | ||
572 | if (!(mode & MODE_I2C_STOP)) | |
573 | msg[0] |= AUX_I2C_MOT << 4; | |
a4fc5ed6 | 574 | |
ab2c0672 DA |
575 | msg[1] = address >> 8; |
576 | msg[2] = address; | |
577 | ||
578 | switch (mode) { | |
579 | case MODE_I2C_WRITE: | |
580 | msg[3] = 0; | |
581 | msg[4] = write_byte; | |
582 | msg_bytes = 5; | |
583 | reply_bytes = 1; | |
584 | break; | |
585 | case MODE_I2C_READ: | |
586 | msg[3] = 0; | |
587 | msg_bytes = 4; | |
588 | reply_bytes = 2; | |
589 | break; | |
590 | default: | |
591 | msg_bytes = 3; | |
592 | reply_bytes = 1; | |
593 | break; | |
594 | } | |
595 | ||
8316f337 DF |
596 | for (retry = 0; retry < 5; retry++) { |
597 | ret = intel_dp_aux_ch(intel_dp, | |
598 | msg, msg_bytes, | |
599 | reply, reply_bytes); | |
ab2c0672 | 600 | if (ret < 0) { |
3ff99164 | 601 | DRM_DEBUG_KMS("aux_ch failed %d\n", ret); |
ab2c0672 DA |
602 | return ret; |
603 | } | |
8316f337 DF |
604 | |
605 | switch (reply[0] & AUX_NATIVE_REPLY_MASK) { | |
606 | case AUX_NATIVE_REPLY_ACK: | |
607 | /* I2C-over-AUX Reply field is only valid | |
608 | * when paired with AUX ACK. | |
609 | */ | |
610 | break; | |
611 | case AUX_NATIVE_REPLY_NACK: | |
612 | DRM_DEBUG_KMS("aux_ch native nack\n"); | |
613 | return -EREMOTEIO; | |
614 | case AUX_NATIVE_REPLY_DEFER: | |
615 | udelay(100); | |
616 | continue; | |
617 | default: | |
618 | DRM_ERROR("aux_ch invalid native reply 0x%02x\n", | |
619 | reply[0]); | |
620 | return -EREMOTEIO; | |
621 | } | |
622 | ||
ab2c0672 DA |
623 | switch (reply[0] & AUX_I2C_REPLY_MASK) { |
624 | case AUX_I2C_REPLY_ACK: | |
625 | if (mode == MODE_I2C_READ) { | |
626 | *read_byte = reply[1]; | |
627 | } | |
628 | return reply_bytes - 1; | |
629 | case AUX_I2C_REPLY_NACK: | |
8316f337 | 630 | DRM_DEBUG_KMS("aux_i2c nack\n"); |
ab2c0672 DA |
631 | return -EREMOTEIO; |
632 | case AUX_I2C_REPLY_DEFER: | |
8316f337 | 633 | DRM_DEBUG_KMS("aux_i2c defer\n"); |
ab2c0672 DA |
634 | udelay(100); |
635 | break; | |
636 | default: | |
8316f337 | 637 | DRM_ERROR("aux_i2c invalid reply 0x%02x\n", reply[0]); |
ab2c0672 DA |
638 | return -EREMOTEIO; |
639 | } | |
640 | } | |
8316f337 DF |
641 | |
642 | DRM_ERROR("too many retries, giving up\n"); | |
643 | return -EREMOTEIO; | |
a4fc5ed6 KP |
644 | } |
645 | ||
0b5c541b | 646 | static void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp); |
bd943159 | 647 | static void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync); |
0b5c541b | 648 | |
a4fc5ed6 | 649 | static int |
ea5b213a | 650 | intel_dp_i2c_init(struct intel_dp *intel_dp, |
55f78c43 | 651 | struct intel_connector *intel_connector, const char *name) |
a4fc5ed6 | 652 | { |
0b5c541b KP |
653 | int ret; |
654 | ||
d54e9d28 | 655 | DRM_DEBUG_KMS("i2c_init %s\n", name); |
ea5b213a CW |
656 | intel_dp->algo.running = false; |
657 | intel_dp->algo.address = 0; | |
658 | intel_dp->algo.aux_ch = intel_dp_i2c_aux_ch; | |
659 | ||
0206e353 | 660 | memset(&intel_dp->adapter, '\0', sizeof(intel_dp->adapter)); |
ea5b213a CW |
661 | intel_dp->adapter.owner = THIS_MODULE; |
662 | intel_dp->adapter.class = I2C_CLASS_DDC; | |
0206e353 | 663 | strncpy(intel_dp->adapter.name, name, sizeof(intel_dp->adapter.name) - 1); |
ea5b213a CW |
664 | intel_dp->adapter.name[sizeof(intel_dp->adapter.name) - 1] = '\0'; |
665 | intel_dp->adapter.algo_data = &intel_dp->algo; | |
666 | intel_dp->adapter.dev.parent = &intel_connector->base.kdev; | |
667 | ||
0b5c541b KP |
668 | ironlake_edp_panel_vdd_on(intel_dp); |
669 | ret = i2c_dp_aux_add_bus(&intel_dp->adapter); | |
bd943159 | 670 | ironlake_edp_panel_vdd_off(intel_dp, false); |
0b5c541b | 671 | return ret; |
a4fc5ed6 KP |
672 | } |
673 | ||
674 | static bool | |
e811f5ae LP |
675 | intel_dp_mode_fixup(struct drm_encoder *encoder, |
676 | const struct drm_display_mode *mode, | |
a4fc5ed6 KP |
677 | struct drm_display_mode *adjusted_mode) |
678 | { | |
0d3a1bee | 679 | struct drm_device *dev = encoder->dev; |
ea5b213a | 680 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
a4fc5ed6 | 681 | int lane_count, clock; |
ea5b213a CW |
682 | int max_lane_count = intel_dp_max_lane_count(intel_dp); |
683 | int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; | |
083f9560 | 684 | int bpp, mode_rate; |
a4fc5ed6 KP |
685 | static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; |
686 | ||
d15456de KP |
687 | if (is_edp(intel_dp) && intel_dp->panel_fixed_mode) { |
688 | intel_fixed_panel_mode(intel_dp->panel_fixed_mode, adjusted_mode); | |
1d8e1c75 CW |
689 | intel_pch_panel_fitting(dev, DRM_MODE_SCALE_FULLSCREEN, |
690 | mode, adjusted_mode); | |
0d3a1bee ZY |
691 | } |
692 | ||
cb1793ce | 693 | if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK) |
0af78a2b DV |
694 | return false; |
695 | ||
083f9560 DV |
696 | DRM_DEBUG_KMS("DP link computation with max lane count %i " |
697 | "max bw %02x pixel clock %iKHz\n", | |
71244653 | 698 | max_lane_count, bws[max_clock], adjusted_mode->clock); |
083f9560 | 699 | |
cb1793ce | 700 | if (!intel_dp_adjust_dithering(intel_dp, adjusted_mode, true)) |
c4867936 DV |
701 | return false; |
702 | ||
703 | bpp = adjusted_mode->private_flags & INTEL_MODE_DP_FORCE_6BPC ? 18 : 24; | |
71244653 | 704 | mode_rate = intel_dp_link_required(adjusted_mode->clock, bpp); |
c4867936 | 705 | |
2514bc51 JB |
706 | for (clock = 0; clock <= max_clock; clock++) { |
707 | for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { | |
fe27d53e | 708 | int link_avail = intel_dp_max_data_rate(intel_dp_link_clock(bws[clock]), lane_count); |
a4fc5ed6 | 709 | |
083f9560 | 710 | if (mode_rate <= link_avail) { |
ea5b213a CW |
711 | intel_dp->link_bw = bws[clock]; |
712 | intel_dp->lane_count = lane_count; | |
713 | adjusted_mode->clock = intel_dp_link_clock(intel_dp->link_bw); | |
083f9560 DV |
714 | DRM_DEBUG_KMS("DP link bw %02x lane " |
715 | "count %d clock %d bpp %d\n", | |
ea5b213a | 716 | intel_dp->link_bw, intel_dp->lane_count, |
083f9560 DV |
717 | adjusted_mode->clock, bpp); |
718 | DRM_DEBUG_KMS("DP link bw required %i available %i\n", | |
719 | mode_rate, link_avail); | |
a4fc5ed6 KP |
720 | return true; |
721 | } | |
722 | } | |
723 | } | |
fe27d53e | 724 | |
a4fc5ed6 KP |
725 | return false; |
726 | } | |
727 | ||
728 | struct intel_dp_m_n { | |
729 | uint32_t tu; | |
730 | uint32_t gmch_m; | |
731 | uint32_t gmch_n; | |
732 | uint32_t link_m; | |
733 | uint32_t link_n; | |
734 | }; | |
735 | ||
736 | static void | |
737 | intel_reduce_ratio(uint32_t *num, uint32_t *den) | |
738 | { | |
739 | while (*num > 0xffffff || *den > 0xffffff) { | |
740 | *num >>= 1; | |
741 | *den >>= 1; | |
742 | } | |
743 | } | |
744 | ||
745 | static void | |
36e83a18 | 746 | intel_dp_compute_m_n(int bpp, |
a4fc5ed6 KP |
747 | int nlanes, |
748 | int pixel_clock, | |
749 | int link_clock, | |
750 | struct intel_dp_m_n *m_n) | |
751 | { | |
752 | m_n->tu = 64; | |
36e83a18 | 753 | m_n->gmch_m = (pixel_clock * bpp) >> 3; |
a4fc5ed6 KP |
754 | m_n->gmch_n = link_clock * nlanes; |
755 | intel_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); | |
756 | m_n->link_m = pixel_clock; | |
757 | m_n->link_n = link_clock; | |
758 | intel_reduce_ratio(&m_n->link_m, &m_n->link_n); | |
759 | } | |
760 | ||
761 | void | |
762 | intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, | |
763 | struct drm_display_mode *adjusted_mode) | |
764 | { | |
765 | struct drm_device *dev = crtc->dev; | |
6c2b7c12 | 766 | struct intel_encoder *encoder; |
a4fc5ed6 KP |
767 | struct drm_i915_private *dev_priv = dev->dev_private; |
768 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
858fa035 | 769 | int lane_count = 4; |
a4fc5ed6 | 770 | struct intel_dp_m_n m_n; |
9db4a9c7 | 771 | int pipe = intel_crtc->pipe; |
a4fc5ed6 KP |
772 | |
773 | /* | |
21d40d37 | 774 | * Find the lane count in the intel_encoder private |
a4fc5ed6 | 775 | */ |
6c2b7c12 DV |
776 | for_each_encoder_on_crtc(dev, crtc, encoder) { |
777 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
a4fc5ed6 | 778 | |
9a10f401 KP |
779 | if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT || |
780 | intel_dp->base.type == INTEL_OUTPUT_EDP) | |
781 | { | |
ea5b213a | 782 | lane_count = intel_dp->lane_count; |
51190667 | 783 | break; |
a4fc5ed6 KP |
784 | } |
785 | } | |
786 | ||
787 | /* | |
788 | * Compute the GMCH and Link ratios. The '3' here is | |
789 | * the number of bytes_per_pixel post-LUT, which we always | |
790 | * set up for 8-bits of R/G/B, or 3 bytes total. | |
791 | */ | |
858fa035 | 792 | intel_dp_compute_m_n(intel_crtc->bpp, lane_count, |
a4fc5ed6 KP |
793 | mode->clock, adjusted_mode->clock, &m_n); |
794 | ||
c619eed4 | 795 | if (HAS_PCH_SPLIT(dev)) { |
9db4a9c7 JB |
796 | I915_WRITE(TRANSDATA_M1(pipe), |
797 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
798 | m_n.gmch_m); | |
799 | I915_WRITE(TRANSDATA_N1(pipe), m_n.gmch_n); | |
800 | I915_WRITE(TRANSDPLINK_M1(pipe), m_n.link_m); | |
801 | I915_WRITE(TRANSDPLINK_N1(pipe), m_n.link_n); | |
a4fc5ed6 | 802 | } else { |
9db4a9c7 JB |
803 | I915_WRITE(PIPE_GMCH_DATA_M(pipe), |
804 | ((m_n.tu - 1) << PIPE_GMCH_DATA_M_TU_SIZE_SHIFT) | | |
805 | m_n.gmch_m); | |
806 | I915_WRITE(PIPE_GMCH_DATA_N(pipe), m_n.gmch_n); | |
807 | I915_WRITE(PIPE_DP_LINK_M(pipe), m_n.link_m); | |
808 | I915_WRITE(PIPE_DP_LINK_N(pipe), m_n.link_n); | |
a4fc5ed6 KP |
809 | } |
810 | } | |
811 | ||
812 | static void | |
813 | intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, | |
814 | struct drm_display_mode *adjusted_mode) | |
815 | { | |
e3421a18 | 816 | struct drm_device *dev = encoder->dev; |
417e822d | 817 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 818 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |
4ef69c7a | 819 | struct drm_crtc *crtc = intel_dp->base.base.crtc; |
a4fc5ed6 KP |
820 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
821 | ||
417e822d | 822 | /* |
1a2eb460 | 823 | * There are four kinds of DP registers: |
417e822d KP |
824 | * |
825 | * IBX PCH | |
1a2eb460 KP |
826 | * SNB CPU |
827 | * IVB CPU | |
417e822d KP |
828 | * CPT PCH |
829 | * | |
830 | * IBX PCH and CPU are the same for almost everything, | |
831 | * except that the CPU DP PLL is configured in this | |
832 | * register | |
833 | * | |
834 | * CPT PCH is quite different, having many bits moved | |
835 | * to the TRANS_DP_CTL register instead. That | |
836 | * configuration happens (oddly) in ironlake_pch_enable | |
837 | */ | |
9c9e7927 | 838 | |
417e822d KP |
839 | /* Preserve the BIOS-computed detected bit. This is |
840 | * supposed to be read-only. | |
841 | */ | |
842 | intel_dp->DP = I915_READ(intel_dp->output_reg) & DP_DETECTED; | |
a4fc5ed6 | 843 | |
417e822d | 844 | /* Handle DP bits in common between all three register formats */ |
417e822d | 845 | intel_dp->DP |= DP_VOLTAGE_0_4 | DP_PRE_EMPHASIS_0; |
a4fc5ed6 | 846 | |
ea5b213a | 847 | switch (intel_dp->lane_count) { |
a4fc5ed6 | 848 | case 1: |
ea5b213a | 849 | intel_dp->DP |= DP_PORT_WIDTH_1; |
a4fc5ed6 KP |
850 | break; |
851 | case 2: | |
ea5b213a | 852 | intel_dp->DP |= DP_PORT_WIDTH_2; |
a4fc5ed6 KP |
853 | break; |
854 | case 4: | |
ea5b213a | 855 | intel_dp->DP |= DP_PORT_WIDTH_4; |
a4fc5ed6 KP |
856 | break; |
857 | } | |
e0dac65e WF |
858 | if (intel_dp->has_audio) { |
859 | DRM_DEBUG_DRIVER("Enabling DP audio on pipe %c\n", | |
860 | pipe_name(intel_crtc->pipe)); | |
ea5b213a | 861 | intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE; |
e0dac65e WF |
862 | intel_write_eld(encoder, adjusted_mode); |
863 | } | |
ea5b213a CW |
864 | memset(intel_dp->link_configuration, 0, DP_LINK_CONFIGURATION_SIZE); |
865 | intel_dp->link_configuration[0] = intel_dp->link_bw; | |
866 | intel_dp->link_configuration[1] = intel_dp->lane_count; | |
a2cab1b2 | 867 | intel_dp->link_configuration[8] = DP_SET_ANSI_8B10B; |
a4fc5ed6 | 868 | /* |
9962c925 | 869 | * Check for DPCD version > 1.1 and enhanced framing support |
a4fc5ed6 | 870 | */ |
7183dc29 JB |
871 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && |
872 | (intel_dp->dpcd[DP_MAX_LANE_COUNT] & DP_ENHANCED_FRAME_CAP)) { | |
ea5b213a | 873 | intel_dp->link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; |
a4fc5ed6 KP |
874 | } |
875 | ||
417e822d | 876 | /* Split out the IBX/CPU vs CPT settings */ |
32f9d658 | 877 | |
1a2eb460 KP |
878 | if (is_cpu_edp(intel_dp) && IS_GEN7(dev)) { |
879 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
880 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
881 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
882 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
883 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
884 | ||
885 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
886 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
887 | ||
888 | intel_dp->DP |= intel_crtc->pipe << 29; | |
889 | ||
890 | /* don't miss out required setting for eDP */ | |
1a2eb460 KP |
891 | if (adjusted_mode->clock < 200000) |
892 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; | |
893 | else | |
894 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
895 | } else if (!HAS_PCH_CPT(dev) || is_cpu_edp(intel_dp)) { | |
417e822d KP |
896 | intel_dp->DP |= intel_dp->color_range; |
897 | ||
898 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
899 | intel_dp->DP |= DP_SYNC_HS_HIGH; | |
900 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
901 | intel_dp->DP |= DP_SYNC_VS_HIGH; | |
902 | intel_dp->DP |= DP_LINK_TRAIN_OFF; | |
903 | ||
904 | if (intel_dp->link_configuration[1] & DP_LANE_COUNT_ENHANCED_FRAME_EN) | |
905 | intel_dp->DP |= DP_ENHANCED_FRAMING; | |
906 | ||
907 | if (intel_crtc->pipe == 1) | |
908 | intel_dp->DP |= DP_PIPEB_SELECT; | |
909 | ||
910 | if (is_cpu_edp(intel_dp)) { | |
911 | /* don't miss out required setting for eDP */ | |
417e822d KP |
912 | if (adjusted_mode->clock < 200000) |
913 | intel_dp->DP |= DP_PLL_FREQ_160MHZ; | |
914 | else | |
915 | intel_dp->DP |= DP_PLL_FREQ_270MHZ; | |
916 | } | |
917 | } else { | |
918 | intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT; | |
32f9d658 | 919 | } |
a4fc5ed6 KP |
920 | } |
921 | ||
99ea7127 KP |
922 | #define IDLE_ON_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) |
923 | #define IDLE_ON_VALUE (PP_ON | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_ON_IDLE) | |
924 | ||
925 | #define IDLE_OFF_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | 0 | PP_SEQUENCE_STATE_MASK) | |
926 | #define IDLE_OFF_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
927 | ||
928 | #define IDLE_CYCLE_MASK (PP_ON | 0 | PP_SEQUENCE_MASK | PP_CYCLE_DELAY_ACTIVE | PP_SEQUENCE_STATE_MASK) | |
929 | #define IDLE_CYCLE_VALUE (0 | 0 | PP_SEQUENCE_NONE | 0 | PP_SEQUENCE_STATE_OFF_IDLE) | |
930 | ||
931 | static void ironlake_wait_panel_status(struct intel_dp *intel_dp, | |
932 | u32 mask, | |
933 | u32 value) | |
bd943159 | 934 | { |
99ea7127 KP |
935 | struct drm_device *dev = intel_dp->base.base.dev; |
936 | struct drm_i915_private *dev_priv = dev->dev_private; | |
32ce697c | 937 | |
99ea7127 KP |
938 | DRM_DEBUG_KMS("mask %08x value %08x status %08x control %08x\n", |
939 | mask, value, | |
940 | I915_READ(PCH_PP_STATUS), | |
941 | I915_READ(PCH_PP_CONTROL)); | |
32ce697c | 942 | |
99ea7127 KP |
943 | if (_wait_for((I915_READ(PCH_PP_STATUS) & mask) == value, 5000, 10)) { |
944 | DRM_ERROR("Panel status timeout: status %08x control %08x\n", | |
945 | I915_READ(PCH_PP_STATUS), | |
946 | I915_READ(PCH_PP_CONTROL)); | |
32ce697c | 947 | } |
99ea7127 | 948 | } |
32ce697c | 949 | |
99ea7127 KP |
950 | static void ironlake_wait_panel_on(struct intel_dp *intel_dp) |
951 | { | |
952 | DRM_DEBUG_KMS("Wait for panel power on\n"); | |
953 | ironlake_wait_panel_status(intel_dp, IDLE_ON_MASK, IDLE_ON_VALUE); | |
bd943159 KP |
954 | } |
955 | ||
99ea7127 KP |
956 | static void ironlake_wait_panel_off(struct intel_dp *intel_dp) |
957 | { | |
958 | DRM_DEBUG_KMS("Wait for panel power off time\n"); | |
959 | ironlake_wait_panel_status(intel_dp, IDLE_OFF_MASK, IDLE_OFF_VALUE); | |
960 | } | |
961 | ||
962 | static void ironlake_wait_panel_power_cycle(struct intel_dp *intel_dp) | |
963 | { | |
964 | DRM_DEBUG_KMS("Wait for panel power cycle\n"); | |
965 | ironlake_wait_panel_status(intel_dp, IDLE_CYCLE_MASK, IDLE_CYCLE_VALUE); | |
966 | } | |
967 | ||
968 | ||
832dd3c1 KP |
969 | /* Read the current pp_control value, unlocking the register if it |
970 | * is locked | |
971 | */ | |
972 | ||
973 | static u32 ironlake_get_pp_control(struct drm_i915_private *dev_priv) | |
974 | { | |
975 | u32 control = I915_READ(PCH_PP_CONTROL); | |
976 | ||
977 | control &= ~PANEL_UNLOCK_MASK; | |
978 | control |= PANEL_UNLOCK_REGS; | |
979 | return control; | |
bd943159 KP |
980 | } |
981 | ||
5d613501 JB |
982 | static void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp) |
983 | { | |
984 | struct drm_device *dev = intel_dp->base.base.dev; | |
985 | struct drm_i915_private *dev_priv = dev->dev_private; | |
986 | u32 pp; | |
987 | ||
97af61f5 KP |
988 | if (!is_edp(intel_dp)) |
989 | return; | |
f01eca2e | 990 | DRM_DEBUG_KMS("Turn eDP VDD on\n"); |
5d613501 | 991 | |
bd943159 KP |
992 | WARN(intel_dp->want_panel_vdd, |
993 | "eDP VDD already requested on\n"); | |
994 | ||
995 | intel_dp->want_panel_vdd = true; | |
99ea7127 | 996 | |
bd943159 KP |
997 | if (ironlake_edp_have_panel_vdd(intel_dp)) { |
998 | DRM_DEBUG_KMS("eDP VDD already on\n"); | |
999 | return; | |
1000 | } | |
1001 | ||
99ea7127 KP |
1002 | if (!ironlake_edp_have_panel_power(intel_dp)) |
1003 | ironlake_wait_panel_power_cycle(intel_dp); | |
1004 | ||
832dd3c1 | 1005 | pp = ironlake_get_pp_control(dev_priv); |
5d613501 JB |
1006 | pp |= EDP_FORCE_VDD; |
1007 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1008 | POSTING_READ(PCH_PP_CONTROL); | |
f01eca2e KP |
1009 | DRM_DEBUG_KMS("PCH_PP_STATUS: 0x%08x PCH_PP_CONTROL: 0x%08x\n", |
1010 | I915_READ(PCH_PP_STATUS), I915_READ(PCH_PP_CONTROL)); | |
ebf33b18 KP |
1011 | |
1012 | /* | |
1013 | * If the panel wasn't on, delay before accessing aux channel | |
1014 | */ | |
1015 | if (!ironlake_edp_have_panel_power(intel_dp)) { | |
bd943159 | 1016 | DRM_DEBUG_KMS("eDP was not running\n"); |
f01eca2e | 1017 | msleep(intel_dp->panel_power_up_delay); |
f01eca2e | 1018 | } |
5d613501 JB |
1019 | } |
1020 | ||
bd943159 | 1021 | static void ironlake_panel_vdd_off_sync(struct intel_dp *intel_dp) |
5d613501 JB |
1022 | { |
1023 | struct drm_device *dev = intel_dp->base.base.dev; | |
1024 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1025 | u32 pp; | |
1026 | ||
bd943159 | 1027 | if (!intel_dp->want_panel_vdd && ironlake_edp_have_panel_vdd(intel_dp)) { |
832dd3c1 | 1028 | pp = ironlake_get_pp_control(dev_priv); |
bd943159 KP |
1029 | pp &= ~EDP_FORCE_VDD; |
1030 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1031 | POSTING_READ(PCH_PP_CONTROL); | |
1032 | ||
1033 | /* Make sure sequencer is idle before allowing subsequent activity */ | |
1034 | DRM_DEBUG_KMS("PCH_PP_STATUS: 0x%08x PCH_PP_CONTROL: 0x%08x\n", | |
1035 | I915_READ(PCH_PP_STATUS), I915_READ(PCH_PP_CONTROL)); | |
99ea7127 KP |
1036 | |
1037 | msleep(intel_dp->panel_power_down_delay); | |
bd943159 KP |
1038 | } |
1039 | } | |
5d613501 | 1040 | |
bd943159 KP |
1041 | static void ironlake_panel_vdd_work(struct work_struct *__work) |
1042 | { | |
1043 | struct intel_dp *intel_dp = container_of(to_delayed_work(__work), | |
1044 | struct intel_dp, panel_vdd_work); | |
1045 | struct drm_device *dev = intel_dp->base.base.dev; | |
1046 | ||
627f7675 | 1047 | mutex_lock(&dev->mode_config.mutex); |
bd943159 | 1048 | ironlake_panel_vdd_off_sync(intel_dp); |
627f7675 | 1049 | mutex_unlock(&dev->mode_config.mutex); |
bd943159 KP |
1050 | } |
1051 | ||
1052 | static void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync) | |
1053 | { | |
97af61f5 KP |
1054 | if (!is_edp(intel_dp)) |
1055 | return; | |
5d613501 | 1056 | |
bd943159 KP |
1057 | DRM_DEBUG_KMS("Turn eDP VDD off %d\n", intel_dp->want_panel_vdd); |
1058 | WARN(!intel_dp->want_panel_vdd, "eDP VDD not forced on"); | |
f2e8b18a | 1059 | |
bd943159 KP |
1060 | intel_dp->want_panel_vdd = false; |
1061 | ||
1062 | if (sync) { | |
1063 | ironlake_panel_vdd_off_sync(intel_dp); | |
1064 | } else { | |
1065 | /* | |
1066 | * Queue the timer to fire a long | |
1067 | * time from now (relative to the power down delay) | |
1068 | * to keep the panel power up across a sequence of operations | |
1069 | */ | |
1070 | schedule_delayed_work(&intel_dp->panel_vdd_work, | |
1071 | msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5)); | |
1072 | } | |
5d613501 JB |
1073 | } |
1074 | ||
86a3073e | 1075 | static void ironlake_edp_panel_on(struct intel_dp *intel_dp) |
9934c132 | 1076 | { |
01cb9ea6 | 1077 | struct drm_device *dev = intel_dp->base.base.dev; |
9934c132 | 1078 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1079 | u32 pp; |
9934c132 | 1080 | |
97af61f5 | 1081 | if (!is_edp(intel_dp)) |
bd943159 | 1082 | return; |
99ea7127 KP |
1083 | |
1084 | DRM_DEBUG_KMS("Turn eDP power on\n"); | |
1085 | ||
1086 | if (ironlake_edp_have_panel_power(intel_dp)) { | |
1087 | DRM_DEBUG_KMS("eDP power already on\n"); | |
7d639f35 | 1088 | return; |
99ea7127 | 1089 | } |
9934c132 | 1090 | |
99ea7127 | 1091 | ironlake_wait_panel_power_cycle(intel_dp); |
37c6c9b0 | 1092 | |
99ea7127 | 1093 | pp = ironlake_get_pp_control(dev_priv); |
05ce1a49 KP |
1094 | if (IS_GEN5(dev)) { |
1095 | /* ILK workaround: disable reset around power sequence */ | |
1096 | pp &= ~PANEL_POWER_RESET; | |
1097 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1098 | POSTING_READ(PCH_PP_CONTROL); | |
1099 | } | |
37c6c9b0 | 1100 | |
1c0ae80a | 1101 | pp |= POWER_TARGET_ON; |
99ea7127 KP |
1102 | if (!IS_GEN5(dev)) |
1103 | pp |= PANEL_POWER_RESET; | |
1104 | ||
9934c132 | 1105 | I915_WRITE(PCH_PP_CONTROL, pp); |
01cb9ea6 | 1106 | POSTING_READ(PCH_PP_CONTROL); |
9934c132 | 1107 | |
99ea7127 | 1108 | ironlake_wait_panel_on(intel_dp); |
9934c132 | 1109 | |
05ce1a49 KP |
1110 | if (IS_GEN5(dev)) { |
1111 | pp |= PANEL_POWER_RESET; /* restore panel reset bit */ | |
1112 | I915_WRITE(PCH_PP_CONTROL, pp); | |
1113 | POSTING_READ(PCH_PP_CONTROL); | |
1114 | } | |
9934c132 JB |
1115 | } |
1116 | ||
99ea7127 | 1117 | static void ironlake_edp_panel_off(struct intel_dp *intel_dp) |
9934c132 | 1118 | { |
99ea7127 | 1119 | struct drm_device *dev = intel_dp->base.base.dev; |
9934c132 | 1120 | struct drm_i915_private *dev_priv = dev->dev_private; |
99ea7127 | 1121 | u32 pp; |
9934c132 | 1122 | |
97af61f5 KP |
1123 | if (!is_edp(intel_dp)) |
1124 | return; | |
37c6c9b0 | 1125 | |
99ea7127 | 1126 | DRM_DEBUG_KMS("Turn eDP power off\n"); |
37c6c9b0 | 1127 | |
6cb49835 | 1128 | WARN(!intel_dp->want_panel_vdd, "Need VDD to turn off panel\n"); |
37c6c9b0 | 1129 | |
99ea7127 | 1130 | pp = ironlake_get_pp_control(dev_priv); |
35a38556 DV |
1131 | /* We need to switch off panel power _and_ force vdd, for otherwise some |
1132 | * panels get very unhappy and cease to work. */ | |
1133 | pp &= ~(POWER_TARGET_ON | EDP_FORCE_VDD | PANEL_POWER_RESET | EDP_BLC_ENABLE); | |
99ea7127 KP |
1134 | I915_WRITE(PCH_PP_CONTROL, pp); |
1135 | POSTING_READ(PCH_PP_CONTROL); | |
9934c132 | 1136 | |
35a38556 DV |
1137 | intel_dp->want_panel_vdd = false; |
1138 | ||
99ea7127 | 1139 | ironlake_wait_panel_off(intel_dp); |
9934c132 JB |
1140 | } |
1141 | ||
86a3073e | 1142 | static void ironlake_edp_backlight_on(struct intel_dp *intel_dp) |
32f9d658 | 1143 | { |
f01eca2e | 1144 | struct drm_device *dev = intel_dp->base.base.dev; |
32f9d658 ZW |
1145 | struct drm_i915_private *dev_priv = dev->dev_private; |
1146 | u32 pp; | |
1147 | ||
f01eca2e KP |
1148 | if (!is_edp(intel_dp)) |
1149 | return; | |
1150 | ||
28c97730 | 1151 | DRM_DEBUG_KMS("\n"); |
01cb9ea6 JB |
1152 | /* |
1153 | * If we enable the backlight right away following a panel power | |
1154 | * on, we may see slight flicker as the panel syncs with the eDP | |
1155 | * link. So delay a bit to make sure the image is solid before | |
1156 | * allowing it to appear. | |
1157 | */ | |
f01eca2e | 1158 | msleep(intel_dp->backlight_on_delay); |
832dd3c1 | 1159 | pp = ironlake_get_pp_control(dev_priv); |
32f9d658 ZW |
1160 | pp |= EDP_BLC_ENABLE; |
1161 | I915_WRITE(PCH_PP_CONTROL, pp); | |
f01eca2e | 1162 | POSTING_READ(PCH_PP_CONTROL); |
32f9d658 ZW |
1163 | } |
1164 | ||
86a3073e | 1165 | static void ironlake_edp_backlight_off(struct intel_dp *intel_dp) |
32f9d658 | 1166 | { |
f01eca2e | 1167 | struct drm_device *dev = intel_dp->base.base.dev; |
32f9d658 ZW |
1168 | struct drm_i915_private *dev_priv = dev->dev_private; |
1169 | u32 pp; | |
1170 | ||
f01eca2e KP |
1171 | if (!is_edp(intel_dp)) |
1172 | return; | |
1173 | ||
28c97730 | 1174 | DRM_DEBUG_KMS("\n"); |
832dd3c1 | 1175 | pp = ironlake_get_pp_control(dev_priv); |
32f9d658 ZW |
1176 | pp &= ~EDP_BLC_ENABLE; |
1177 | I915_WRITE(PCH_PP_CONTROL, pp); | |
f01eca2e KP |
1178 | POSTING_READ(PCH_PP_CONTROL); |
1179 | msleep(intel_dp->backlight_off_delay); | |
32f9d658 | 1180 | } |
a4fc5ed6 | 1181 | |
2bd2ad64 | 1182 | static void ironlake_edp_pll_on(struct intel_dp *intel_dp) |
d240f20f | 1183 | { |
2bd2ad64 DV |
1184 | struct drm_device *dev = intel_dp->base.base.dev; |
1185 | struct drm_crtc *crtc = intel_dp->base.base.crtc; | |
d240f20f JB |
1186 | struct drm_i915_private *dev_priv = dev->dev_private; |
1187 | u32 dpa_ctl; | |
1188 | ||
2bd2ad64 DV |
1189 | assert_pipe_disabled(dev_priv, |
1190 | to_intel_crtc(crtc)->pipe); | |
1191 | ||
d240f20f JB |
1192 | DRM_DEBUG_KMS("\n"); |
1193 | dpa_ctl = I915_READ(DP_A); | |
0767935e DV |
1194 | WARN(dpa_ctl & DP_PLL_ENABLE, "dp pll on, should be off\n"); |
1195 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1196 | ||
1197 | /* We don't adjust intel_dp->DP while tearing down the link, to | |
1198 | * facilitate link retraining (e.g. after hotplug). Hence clear all | |
1199 | * enable bits here to ensure that we don't enable too much. */ | |
1200 | intel_dp->DP &= ~(DP_PORT_EN | DP_AUDIO_OUTPUT_ENABLE); | |
1201 | intel_dp->DP |= DP_PLL_ENABLE; | |
1202 | I915_WRITE(DP_A, intel_dp->DP); | |
298b0b39 JB |
1203 | POSTING_READ(DP_A); |
1204 | udelay(200); | |
d240f20f JB |
1205 | } |
1206 | ||
2bd2ad64 | 1207 | static void ironlake_edp_pll_off(struct intel_dp *intel_dp) |
d240f20f | 1208 | { |
2bd2ad64 DV |
1209 | struct drm_device *dev = intel_dp->base.base.dev; |
1210 | struct drm_crtc *crtc = intel_dp->base.base.crtc; | |
d240f20f JB |
1211 | struct drm_i915_private *dev_priv = dev->dev_private; |
1212 | u32 dpa_ctl; | |
1213 | ||
2bd2ad64 DV |
1214 | assert_pipe_disabled(dev_priv, |
1215 | to_intel_crtc(crtc)->pipe); | |
1216 | ||
d240f20f | 1217 | dpa_ctl = I915_READ(DP_A); |
0767935e DV |
1218 | WARN((dpa_ctl & DP_PLL_ENABLE) == 0, |
1219 | "dp pll off, should be on\n"); | |
1220 | WARN(dpa_ctl & DP_PORT_EN, "dp port still on, should be off\n"); | |
1221 | ||
1222 | /* We can't rely on the value tracked for the DP register in | |
1223 | * intel_dp->DP because link_down must not change that (otherwise link | |
1224 | * re-training will fail. */ | |
298b0b39 | 1225 | dpa_ctl &= ~DP_PLL_ENABLE; |
d240f20f | 1226 | I915_WRITE(DP_A, dpa_ctl); |
1af5fa1b | 1227 | POSTING_READ(DP_A); |
d240f20f JB |
1228 | udelay(200); |
1229 | } | |
1230 | ||
c7ad3810 JB |
1231 | /* If the sink supports it, try to set the power state appropriately */ |
1232 | static void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode) | |
1233 | { | |
1234 | int ret, i; | |
1235 | ||
1236 | /* Should have a valid DPCD by this point */ | |
1237 | if (intel_dp->dpcd[DP_DPCD_REV] < 0x11) | |
1238 | return; | |
1239 | ||
1240 | if (mode != DRM_MODE_DPMS_ON) { | |
1241 | ret = intel_dp_aux_native_write_1(intel_dp, DP_SET_POWER, | |
1242 | DP_SET_POWER_D3); | |
1243 | if (ret != 1) | |
1244 | DRM_DEBUG_DRIVER("failed to write sink power state\n"); | |
1245 | } else { | |
1246 | /* | |
1247 | * When turning on, we need to retry for 1ms to give the sink | |
1248 | * time to wake up. | |
1249 | */ | |
1250 | for (i = 0; i < 3; i++) { | |
1251 | ret = intel_dp_aux_native_write_1(intel_dp, | |
1252 | DP_SET_POWER, | |
1253 | DP_SET_POWER_D0); | |
1254 | if (ret == 1) | |
1255 | break; | |
1256 | msleep(1); | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | ||
19d8fe15 DV |
1261 | static bool intel_dp_get_hw_state(struct intel_encoder *encoder, |
1262 | enum pipe *pipe) | |
d240f20f | 1263 | { |
19d8fe15 DV |
1264 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1265 | struct drm_device *dev = encoder->base.dev; | |
1266 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1267 | u32 tmp = I915_READ(intel_dp->output_reg); | |
1268 | ||
1269 | if (!(tmp & DP_PORT_EN)) | |
1270 | return false; | |
1271 | ||
1272 | if (is_cpu_edp(intel_dp) && IS_GEN7(dev)) { | |
1273 | *pipe = PORT_TO_PIPE_CPT(tmp); | |
1274 | } else if (!HAS_PCH_CPT(dev) || is_cpu_edp(intel_dp)) { | |
1275 | *pipe = PORT_TO_PIPE(tmp); | |
1276 | } else { | |
1277 | u32 trans_sel; | |
1278 | u32 trans_dp; | |
1279 | int i; | |
1280 | ||
1281 | switch (intel_dp->output_reg) { | |
1282 | case PCH_DP_B: | |
1283 | trans_sel = TRANS_DP_PORT_SEL_B; | |
1284 | break; | |
1285 | case PCH_DP_C: | |
1286 | trans_sel = TRANS_DP_PORT_SEL_C; | |
1287 | break; | |
1288 | case PCH_DP_D: | |
1289 | trans_sel = TRANS_DP_PORT_SEL_D; | |
1290 | break; | |
1291 | default: | |
1292 | return true; | |
1293 | } | |
1294 | ||
1295 | for_each_pipe(i) { | |
1296 | trans_dp = I915_READ(TRANS_DP_CTL(i)); | |
1297 | if ((trans_dp & TRANS_DP_PORT_SEL_MASK) == trans_sel) { | |
1298 | *pipe = i; | |
1299 | return true; | |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | ||
1304 | DRM_DEBUG_KMS("No pipe for dp port 0x%x found\n", intel_dp->output_reg); | |
d240f20f | 1305 | |
19d8fe15 DV |
1306 | return true; |
1307 | } | |
1308 | ||
e8cb4558 | 1309 | static void intel_disable_dp(struct intel_encoder *encoder) |
d240f20f | 1310 | { |
e8cb4558 | 1311 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
6cb49835 DV |
1312 | |
1313 | /* Make sure the panel is off before trying to change the mode. But also | |
1314 | * ensure that we have vdd while we switch off the panel. */ | |
1315 | ironlake_edp_panel_vdd_on(intel_dp); | |
21264c63 | 1316 | ironlake_edp_backlight_off(intel_dp); |
c7ad3810 | 1317 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
35a38556 | 1318 | ironlake_edp_panel_off(intel_dp); |
3739850b DV |
1319 | |
1320 | /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ | |
1321 | if (!is_cpu_edp(intel_dp)) | |
1322 | intel_dp_link_down(intel_dp); | |
d240f20f JB |
1323 | } |
1324 | ||
2bd2ad64 DV |
1325 | static void intel_post_disable_dp(struct intel_encoder *encoder) |
1326 | { | |
1327 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
1328 | ||
3739850b DV |
1329 | if (is_cpu_edp(intel_dp)) { |
1330 | intel_dp_link_down(intel_dp); | |
2bd2ad64 | 1331 | ironlake_edp_pll_off(intel_dp); |
3739850b | 1332 | } |
2bd2ad64 DV |
1333 | } |
1334 | ||
e8cb4558 | 1335 | static void intel_enable_dp(struct intel_encoder *encoder) |
d240f20f | 1336 | { |
e8cb4558 DV |
1337 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
1338 | struct drm_device *dev = encoder->base.dev; | |
1339 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1340 | uint32_t dp_reg = I915_READ(intel_dp->output_reg); | |
5d613501 | 1341 | |
0c33d8d7 DV |
1342 | if (WARN_ON(dp_reg & DP_PORT_EN)) |
1343 | return; | |
1344 | ||
97af61f5 | 1345 | ironlake_edp_panel_vdd_on(intel_dp); |
f01eca2e | 1346 | intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); |
0c33d8d7 DV |
1347 | intel_dp_start_link_train(intel_dp); |
1348 | ironlake_edp_panel_on(intel_dp); | |
1349 | ironlake_edp_panel_vdd_off(intel_dp, true); | |
1350 | intel_dp_complete_link_train(intel_dp); | |
f01eca2e | 1351 | ironlake_edp_backlight_on(intel_dp); |
d240f20f JB |
1352 | } |
1353 | ||
2bd2ad64 | 1354 | static void intel_pre_enable_dp(struct intel_encoder *encoder) |
a4fc5ed6 | 1355 | { |
2bd2ad64 | 1356 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); |
0a91ca29 | 1357 | |
2bd2ad64 DV |
1358 | if (is_cpu_edp(intel_dp)) |
1359 | ironlake_edp_pll_on(intel_dp); | |
a4fc5ed6 KP |
1360 | } |
1361 | ||
1362 | /* | |
df0c237d JB |
1363 | * Native read with retry for link status and receiver capability reads for |
1364 | * cases where the sink may still be asleep. | |
a4fc5ed6 KP |
1365 | */ |
1366 | static bool | |
df0c237d JB |
1367 | intel_dp_aux_native_read_retry(struct intel_dp *intel_dp, uint16_t address, |
1368 | uint8_t *recv, int recv_bytes) | |
a4fc5ed6 | 1369 | { |
61da5fab JB |
1370 | int ret, i; |
1371 | ||
df0c237d JB |
1372 | /* |
1373 | * Sinks are *supposed* to come up within 1ms from an off state, | |
1374 | * but we're also supposed to retry 3 times per the spec. | |
1375 | */ | |
61da5fab | 1376 | for (i = 0; i < 3; i++) { |
df0c237d JB |
1377 | ret = intel_dp_aux_native_read(intel_dp, address, recv, |
1378 | recv_bytes); | |
1379 | if (ret == recv_bytes) | |
61da5fab JB |
1380 | return true; |
1381 | msleep(1); | |
1382 | } | |
a4fc5ed6 | 1383 | |
61da5fab | 1384 | return false; |
a4fc5ed6 KP |
1385 | } |
1386 | ||
1387 | /* | |
1388 | * Fetch AUX CH registers 0x202 - 0x207 which contain | |
1389 | * link status information | |
1390 | */ | |
1391 | static bool | |
93f62dad | 1392 | intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 | 1393 | { |
df0c237d JB |
1394 | return intel_dp_aux_native_read_retry(intel_dp, |
1395 | DP_LANE0_1_STATUS, | |
93f62dad | 1396 | link_status, |
df0c237d | 1397 | DP_LINK_STATUS_SIZE); |
a4fc5ed6 KP |
1398 | } |
1399 | ||
1400 | static uint8_t | |
1401 | intel_dp_link_status(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
1402 | int r) | |
1403 | { | |
1404 | return link_status[r - DP_LANE0_1_STATUS]; | |
1405 | } | |
1406 | ||
a4fc5ed6 | 1407 | static uint8_t |
93f62dad | 1408 | intel_get_adjust_request_voltage(uint8_t adjust_request[2], |
a4fc5ed6 KP |
1409 | int lane) |
1410 | { | |
a4fc5ed6 KP |
1411 | int s = ((lane & 1) ? |
1412 | DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT : | |
1413 | DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT); | |
93f62dad | 1414 | uint8_t l = adjust_request[lane>>1]; |
a4fc5ed6 KP |
1415 | |
1416 | return ((l >> s) & 3) << DP_TRAIN_VOLTAGE_SWING_SHIFT; | |
1417 | } | |
1418 | ||
1419 | static uint8_t | |
93f62dad | 1420 | intel_get_adjust_request_pre_emphasis(uint8_t adjust_request[2], |
a4fc5ed6 KP |
1421 | int lane) |
1422 | { | |
a4fc5ed6 KP |
1423 | int s = ((lane & 1) ? |
1424 | DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT : | |
1425 | DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT); | |
93f62dad | 1426 | uint8_t l = adjust_request[lane>>1]; |
a4fc5ed6 KP |
1427 | |
1428 | return ((l >> s) & 3) << DP_TRAIN_PRE_EMPHASIS_SHIFT; | |
1429 | } | |
1430 | ||
1431 | ||
1432 | #if 0 | |
1433 | static char *voltage_names[] = { | |
1434 | "0.4V", "0.6V", "0.8V", "1.2V" | |
1435 | }; | |
1436 | static char *pre_emph_names[] = { | |
1437 | "0dB", "3.5dB", "6dB", "9.5dB" | |
1438 | }; | |
1439 | static char *link_train_names[] = { | |
1440 | "pattern 1", "pattern 2", "idle", "off" | |
1441 | }; | |
1442 | #endif | |
1443 | ||
1444 | /* | |
1445 | * These are source-specific values; current Intel hardware supports | |
1446 | * a maximum voltage of 800mV and a maximum pre-emphasis of 6dB | |
1447 | */ | |
a4fc5ed6 KP |
1448 | |
1449 | static uint8_t | |
1a2eb460 | 1450 | intel_dp_voltage_max(struct intel_dp *intel_dp) |
a4fc5ed6 | 1451 | { |
1a2eb460 KP |
1452 | struct drm_device *dev = intel_dp->base.base.dev; |
1453 | ||
1454 | if (IS_GEN7(dev) && is_cpu_edp(intel_dp)) | |
1455 | return DP_TRAIN_VOLTAGE_SWING_800; | |
1456 | else if (HAS_PCH_CPT(dev) && !is_cpu_edp(intel_dp)) | |
1457 | return DP_TRAIN_VOLTAGE_SWING_1200; | |
1458 | else | |
1459 | return DP_TRAIN_VOLTAGE_SWING_800; | |
1460 | } | |
1461 | ||
1462 | static uint8_t | |
1463 | intel_dp_pre_emphasis_max(struct intel_dp *intel_dp, uint8_t voltage_swing) | |
1464 | { | |
1465 | struct drm_device *dev = intel_dp->base.base.dev; | |
1466 | ||
1467 | if (IS_GEN7(dev) && is_cpu_edp(intel_dp)) { | |
1468 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1469 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1470 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1471 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1472 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1473 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1474 | default: | |
1475 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1476 | } | |
1477 | } else { | |
1478 | switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) { | |
1479 | case DP_TRAIN_VOLTAGE_SWING_400: | |
1480 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1481 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1482 | return DP_TRAIN_PRE_EMPHASIS_6; | |
1483 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1484 | return DP_TRAIN_PRE_EMPHASIS_3_5; | |
1485 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1486 | default: | |
1487 | return DP_TRAIN_PRE_EMPHASIS_0; | |
1488 | } | |
a4fc5ed6 KP |
1489 | } |
1490 | } | |
1491 | ||
1492 | static void | |
93f62dad | 1493 | intel_get_adjust_train(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 KP |
1494 | { |
1495 | uint8_t v = 0; | |
1496 | uint8_t p = 0; | |
1497 | int lane; | |
93f62dad | 1498 | uint8_t *adjust_request = link_status + (DP_ADJUST_REQUEST_LANE0_1 - DP_LANE0_1_STATUS); |
1a2eb460 KP |
1499 | uint8_t voltage_max; |
1500 | uint8_t preemph_max; | |
a4fc5ed6 | 1501 | |
33a34e4e | 1502 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
93f62dad KP |
1503 | uint8_t this_v = intel_get_adjust_request_voltage(adjust_request, lane); |
1504 | uint8_t this_p = intel_get_adjust_request_pre_emphasis(adjust_request, lane); | |
a4fc5ed6 KP |
1505 | |
1506 | if (this_v > v) | |
1507 | v = this_v; | |
1508 | if (this_p > p) | |
1509 | p = this_p; | |
1510 | } | |
1511 | ||
1a2eb460 | 1512 | voltage_max = intel_dp_voltage_max(intel_dp); |
417e822d KP |
1513 | if (v >= voltage_max) |
1514 | v = voltage_max | DP_TRAIN_MAX_SWING_REACHED; | |
a4fc5ed6 | 1515 | |
1a2eb460 KP |
1516 | preemph_max = intel_dp_pre_emphasis_max(intel_dp, v); |
1517 | if (p >= preemph_max) | |
1518 | p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED; | |
a4fc5ed6 KP |
1519 | |
1520 | for (lane = 0; lane < 4; lane++) | |
33a34e4e | 1521 | intel_dp->train_set[lane] = v | p; |
a4fc5ed6 KP |
1522 | } |
1523 | ||
1524 | static uint32_t | |
93f62dad | 1525 | intel_dp_signal_levels(uint8_t train_set) |
a4fc5ed6 | 1526 | { |
3cf2efb1 | 1527 | uint32_t signal_levels = 0; |
a4fc5ed6 | 1528 | |
3cf2efb1 | 1529 | switch (train_set & DP_TRAIN_VOLTAGE_SWING_MASK) { |
a4fc5ed6 KP |
1530 | case DP_TRAIN_VOLTAGE_SWING_400: |
1531 | default: | |
1532 | signal_levels |= DP_VOLTAGE_0_4; | |
1533 | break; | |
1534 | case DP_TRAIN_VOLTAGE_SWING_600: | |
1535 | signal_levels |= DP_VOLTAGE_0_6; | |
1536 | break; | |
1537 | case DP_TRAIN_VOLTAGE_SWING_800: | |
1538 | signal_levels |= DP_VOLTAGE_0_8; | |
1539 | break; | |
1540 | case DP_TRAIN_VOLTAGE_SWING_1200: | |
1541 | signal_levels |= DP_VOLTAGE_1_2; | |
1542 | break; | |
1543 | } | |
3cf2efb1 | 1544 | switch (train_set & DP_TRAIN_PRE_EMPHASIS_MASK) { |
a4fc5ed6 KP |
1545 | case DP_TRAIN_PRE_EMPHASIS_0: |
1546 | default: | |
1547 | signal_levels |= DP_PRE_EMPHASIS_0; | |
1548 | break; | |
1549 | case DP_TRAIN_PRE_EMPHASIS_3_5: | |
1550 | signal_levels |= DP_PRE_EMPHASIS_3_5; | |
1551 | break; | |
1552 | case DP_TRAIN_PRE_EMPHASIS_6: | |
1553 | signal_levels |= DP_PRE_EMPHASIS_6; | |
1554 | break; | |
1555 | case DP_TRAIN_PRE_EMPHASIS_9_5: | |
1556 | signal_levels |= DP_PRE_EMPHASIS_9_5; | |
1557 | break; | |
1558 | } | |
1559 | return signal_levels; | |
1560 | } | |
1561 | ||
e3421a18 ZW |
1562 | /* Gen6's DP voltage swing and pre-emphasis control */ |
1563 | static uint32_t | |
1564 | intel_gen6_edp_signal_levels(uint8_t train_set) | |
1565 | { | |
3c5a62b5 YL |
1566 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | |
1567 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
1568 | switch (signal_levels) { | |
e3421a18 | 1569 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
1570 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: |
1571 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
1572 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1573 | return EDP_LINK_TRAIN_400MV_3_5DB_SNB_B; | |
e3421a18 | 1574 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: |
3c5a62b5 YL |
1575 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_6: |
1576 | return EDP_LINK_TRAIN_400_600MV_6DB_SNB_B; | |
e3421a18 | 1577 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: |
3c5a62b5 YL |
1578 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: |
1579 | return EDP_LINK_TRAIN_600_800MV_3_5DB_SNB_B; | |
e3421a18 | 1580 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: |
3c5a62b5 YL |
1581 | case DP_TRAIN_VOLTAGE_SWING_1200 | DP_TRAIN_PRE_EMPHASIS_0: |
1582 | return EDP_LINK_TRAIN_800_1200MV_0DB_SNB_B; | |
e3421a18 | 1583 | default: |
3c5a62b5 YL |
1584 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" |
1585 | "0x%x\n", signal_levels); | |
1586 | return EDP_LINK_TRAIN_400_600MV_0DB_SNB_B; | |
e3421a18 ZW |
1587 | } |
1588 | } | |
1589 | ||
1a2eb460 KP |
1590 | /* Gen7's DP voltage swing and pre-emphasis control */ |
1591 | static uint32_t | |
1592 | intel_gen7_edp_signal_levels(uint8_t train_set) | |
1593 | { | |
1594 | int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK | | |
1595 | DP_TRAIN_PRE_EMPHASIS_MASK); | |
1596 | switch (signal_levels) { | |
1597 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_0: | |
1598 | return EDP_LINK_TRAIN_400MV_0DB_IVB; | |
1599 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1600 | return EDP_LINK_TRAIN_400MV_3_5DB_IVB; | |
1601 | case DP_TRAIN_VOLTAGE_SWING_400 | DP_TRAIN_PRE_EMPHASIS_6: | |
1602 | return EDP_LINK_TRAIN_400MV_6DB_IVB; | |
1603 | ||
1604 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_0: | |
1605 | return EDP_LINK_TRAIN_600MV_0DB_IVB; | |
1606 | case DP_TRAIN_VOLTAGE_SWING_600 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1607 | return EDP_LINK_TRAIN_600MV_3_5DB_IVB; | |
1608 | ||
1609 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_0: | |
1610 | return EDP_LINK_TRAIN_800MV_0DB_IVB; | |
1611 | case DP_TRAIN_VOLTAGE_SWING_800 | DP_TRAIN_PRE_EMPHASIS_3_5: | |
1612 | return EDP_LINK_TRAIN_800MV_3_5DB_IVB; | |
1613 | ||
1614 | default: | |
1615 | DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:" | |
1616 | "0x%x\n", signal_levels); | |
1617 | return EDP_LINK_TRAIN_500MV_0DB_IVB; | |
1618 | } | |
1619 | } | |
1620 | ||
a4fc5ed6 KP |
1621 | static uint8_t |
1622 | intel_get_lane_status(uint8_t link_status[DP_LINK_STATUS_SIZE], | |
1623 | int lane) | |
1624 | { | |
a4fc5ed6 | 1625 | int s = (lane & 1) * 4; |
93f62dad | 1626 | uint8_t l = link_status[lane>>1]; |
a4fc5ed6 KP |
1627 | |
1628 | return (l >> s) & 0xf; | |
1629 | } | |
1630 | ||
1631 | /* Check for clock recovery is done on all channels */ | |
1632 | static bool | |
1633 | intel_clock_recovery_ok(uint8_t link_status[DP_LINK_STATUS_SIZE], int lane_count) | |
1634 | { | |
1635 | int lane; | |
1636 | uint8_t lane_status; | |
1637 | ||
1638 | for (lane = 0; lane < lane_count; lane++) { | |
1639 | lane_status = intel_get_lane_status(link_status, lane); | |
1640 | if ((lane_status & DP_LANE_CR_DONE) == 0) | |
1641 | return false; | |
1642 | } | |
1643 | return true; | |
1644 | } | |
1645 | ||
1646 | /* Check to see if channel eq is done on all channels */ | |
1647 | #define CHANNEL_EQ_BITS (DP_LANE_CR_DONE|\ | |
1648 | DP_LANE_CHANNEL_EQ_DONE|\ | |
1649 | DP_LANE_SYMBOL_LOCKED) | |
1650 | static bool | |
93f62dad | 1651 | intel_channel_eq_ok(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]) |
a4fc5ed6 KP |
1652 | { |
1653 | uint8_t lane_align; | |
1654 | uint8_t lane_status; | |
1655 | int lane; | |
1656 | ||
93f62dad | 1657 | lane_align = intel_dp_link_status(link_status, |
a4fc5ed6 KP |
1658 | DP_LANE_ALIGN_STATUS_UPDATED); |
1659 | if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0) | |
1660 | return false; | |
33a34e4e | 1661 | for (lane = 0; lane < intel_dp->lane_count; lane++) { |
93f62dad | 1662 | lane_status = intel_get_lane_status(link_status, lane); |
a4fc5ed6 KP |
1663 | if ((lane_status & CHANNEL_EQ_BITS) != CHANNEL_EQ_BITS) |
1664 | return false; | |
1665 | } | |
1666 | return true; | |
1667 | } | |
1668 | ||
1669 | static bool | |
ea5b213a | 1670 | intel_dp_set_link_train(struct intel_dp *intel_dp, |
a4fc5ed6 | 1671 | uint32_t dp_reg_value, |
58e10eb9 | 1672 | uint8_t dp_train_pat) |
a4fc5ed6 | 1673 | { |
4ef69c7a | 1674 | struct drm_device *dev = intel_dp->base.base.dev; |
a4fc5ed6 | 1675 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4fc5ed6 KP |
1676 | int ret; |
1677 | ||
47ea7542 PZ |
1678 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || !is_cpu_edp(intel_dp))) { |
1679 | dp_reg_value &= ~DP_LINK_TRAIN_MASK_CPT; | |
1680 | ||
1681 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
1682 | case DP_TRAINING_PATTERN_DISABLE: | |
1683 | dp_reg_value |= DP_LINK_TRAIN_OFF_CPT; | |
1684 | break; | |
1685 | case DP_TRAINING_PATTERN_1: | |
1686 | dp_reg_value |= DP_LINK_TRAIN_PAT_1_CPT; | |
1687 | break; | |
1688 | case DP_TRAINING_PATTERN_2: | |
1689 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
1690 | break; | |
1691 | case DP_TRAINING_PATTERN_3: | |
1692 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
1693 | dp_reg_value |= DP_LINK_TRAIN_PAT_2_CPT; | |
1694 | break; | |
1695 | } | |
1696 | ||
1697 | } else { | |
1698 | dp_reg_value &= ~DP_LINK_TRAIN_MASK; | |
1699 | ||
1700 | switch (dp_train_pat & DP_TRAINING_PATTERN_MASK) { | |
1701 | case DP_TRAINING_PATTERN_DISABLE: | |
1702 | dp_reg_value |= DP_LINK_TRAIN_OFF; | |
1703 | break; | |
1704 | case DP_TRAINING_PATTERN_1: | |
1705 | dp_reg_value |= DP_LINK_TRAIN_PAT_1; | |
1706 | break; | |
1707 | case DP_TRAINING_PATTERN_2: | |
1708 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
1709 | break; | |
1710 | case DP_TRAINING_PATTERN_3: | |
1711 | DRM_ERROR("DP training pattern 3 not supported\n"); | |
1712 | dp_reg_value |= DP_LINK_TRAIN_PAT_2; | |
1713 | break; | |
1714 | } | |
1715 | } | |
1716 | ||
ea5b213a CW |
1717 | I915_WRITE(intel_dp->output_reg, dp_reg_value); |
1718 | POSTING_READ(intel_dp->output_reg); | |
a4fc5ed6 | 1719 | |
ea5b213a | 1720 | intel_dp_aux_native_write_1(intel_dp, |
a4fc5ed6 KP |
1721 | DP_TRAINING_PATTERN_SET, |
1722 | dp_train_pat); | |
1723 | ||
47ea7542 PZ |
1724 | if ((dp_train_pat & DP_TRAINING_PATTERN_MASK) != |
1725 | DP_TRAINING_PATTERN_DISABLE) { | |
1726 | ret = intel_dp_aux_native_write(intel_dp, | |
1727 | DP_TRAINING_LANE0_SET, | |
1728 | intel_dp->train_set, | |
1729 | intel_dp->lane_count); | |
1730 | if (ret != intel_dp->lane_count) | |
1731 | return false; | |
1732 | } | |
a4fc5ed6 KP |
1733 | |
1734 | return true; | |
1735 | } | |
1736 | ||
33a34e4e | 1737 | /* Enable corresponding port and start training pattern 1 */ |
a4fc5ed6 | 1738 | static void |
33a34e4e | 1739 | intel_dp_start_link_train(struct intel_dp *intel_dp) |
a4fc5ed6 | 1740 | { |
4ef69c7a | 1741 | struct drm_device *dev = intel_dp->base.base.dev; |
a4fc5ed6 KP |
1742 | int i; |
1743 | uint8_t voltage; | |
1744 | bool clock_recovery = false; | |
cdb0e95b | 1745 | int voltage_tries, loop_tries; |
ea5b213a | 1746 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 1747 | |
3cf2efb1 CW |
1748 | /* Write the link configuration data */ |
1749 | intel_dp_aux_native_write(intel_dp, DP_LINK_BW_SET, | |
1750 | intel_dp->link_configuration, | |
1751 | DP_LINK_CONFIGURATION_SIZE); | |
a4fc5ed6 KP |
1752 | |
1753 | DP |= DP_PORT_EN; | |
1a2eb460 | 1754 | |
33a34e4e | 1755 | memset(intel_dp->train_set, 0, 4); |
a4fc5ed6 | 1756 | voltage = 0xff; |
cdb0e95b KP |
1757 | voltage_tries = 0; |
1758 | loop_tries = 0; | |
a4fc5ed6 KP |
1759 | clock_recovery = false; |
1760 | for (;;) { | |
33a34e4e | 1761 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ |
93f62dad | 1762 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 1763 | uint32_t signal_levels; |
417e822d | 1764 | |
1a2eb460 KP |
1765 | |
1766 | if (IS_GEN7(dev) && is_cpu_edp(intel_dp)) { | |
1767 | signal_levels = intel_gen7_edp_signal_levels(intel_dp->train_set[0]); | |
1768 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB) | signal_levels; | |
1769 | } else if (IS_GEN6(dev) && is_cpu_edp(intel_dp)) { | |
33a34e4e | 1770 | signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]); |
e3421a18 ZW |
1771 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; |
1772 | } else { | |
93f62dad KP |
1773 | signal_levels = intel_dp_signal_levels(intel_dp->train_set[0]); |
1774 | DRM_DEBUG_KMS("training pattern 1 signal levels %08x\n", signal_levels); | |
e3421a18 ZW |
1775 | DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; |
1776 | } | |
a4fc5ed6 | 1777 | |
47ea7542 | 1778 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
1779 | DP_TRAINING_PATTERN_1 | |
1780 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 | 1781 | break; |
a4fc5ed6 KP |
1782 | /* Set training pattern 1 */ |
1783 | ||
3cf2efb1 | 1784 | udelay(100); |
93f62dad KP |
1785 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
1786 | DRM_ERROR("failed to get link status\n"); | |
a4fc5ed6 | 1787 | break; |
93f62dad | 1788 | } |
a4fc5ed6 | 1789 | |
93f62dad KP |
1790 | if (intel_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
1791 | DRM_DEBUG_KMS("clock recovery OK\n"); | |
3cf2efb1 CW |
1792 | clock_recovery = true; |
1793 | break; | |
1794 | } | |
1795 | ||
1796 | /* Check to see if we've tried the max voltage */ | |
1797 | for (i = 0; i < intel_dp->lane_count; i++) | |
1798 | if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) | |
a4fc5ed6 | 1799 | break; |
0d710688 | 1800 | if (i == intel_dp->lane_count && voltage_tries == 5) { |
cdb0e95b KP |
1801 | ++loop_tries; |
1802 | if (loop_tries == 5) { | |
1803 | DRM_DEBUG_KMS("too many full retries, give up\n"); | |
1804 | break; | |
1805 | } | |
1806 | memset(intel_dp->train_set, 0, 4); | |
1807 | voltage_tries = 0; | |
1808 | continue; | |
1809 | } | |
a4fc5ed6 | 1810 | |
3cf2efb1 CW |
1811 | /* Check to see if we've tried the same voltage 5 times */ |
1812 | if ((intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) { | |
cdb0e95b KP |
1813 | ++voltage_tries; |
1814 | if (voltage_tries == 5) { | |
1815 | DRM_DEBUG_KMS("too many voltage retries, give up\n"); | |
a4fc5ed6 | 1816 | break; |
cdb0e95b | 1817 | } |
3cf2efb1 | 1818 | } else |
cdb0e95b | 1819 | voltage_tries = 0; |
3cf2efb1 | 1820 | voltage = intel_dp->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK; |
a4fc5ed6 | 1821 | |
3cf2efb1 | 1822 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 1823 | intel_get_adjust_train(intel_dp, link_status); |
a4fc5ed6 KP |
1824 | } |
1825 | ||
33a34e4e JB |
1826 | intel_dp->DP = DP; |
1827 | } | |
1828 | ||
1829 | static void | |
1830 | intel_dp_complete_link_train(struct intel_dp *intel_dp) | |
1831 | { | |
4ef69c7a | 1832 | struct drm_device *dev = intel_dp->base.base.dev; |
33a34e4e | 1833 | bool channel_eq = false; |
37f80975 | 1834 | int tries, cr_tries; |
33a34e4e JB |
1835 | uint32_t DP = intel_dp->DP; |
1836 | ||
a4fc5ed6 KP |
1837 | /* channel equalization */ |
1838 | tries = 0; | |
37f80975 | 1839 | cr_tries = 0; |
a4fc5ed6 KP |
1840 | channel_eq = false; |
1841 | for (;;) { | |
33a34e4e | 1842 | /* Use intel_dp->train_set[0] to set the voltage and pre emphasis values */ |
e3421a18 | 1843 | uint32_t signal_levels; |
93f62dad | 1844 | uint8_t link_status[DP_LINK_STATUS_SIZE]; |
e3421a18 | 1845 | |
37f80975 JB |
1846 | if (cr_tries > 5) { |
1847 | DRM_ERROR("failed to train DP, aborting\n"); | |
1848 | intel_dp_link_down(intel_dp); | |
1849 | break; | |
1850 | } | |
1851 | ||
1a2eb460 KP |
1852 | if (IS_GEN7(dev) && is_cpu_edp(intel_dp)) { |
1853 | signal_levels = intel_gen7_edp_signal_levels(intel_dp->train_set[0]); | |
1854 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_IVB) | signal_levels; | |
1855 | } else if (IS_GEN6(dev) && is_cpu_edp(intel_dp)) { | |
33a34e4e | 1856 | signal_levels = intel_gen6_edp_signal_levels(intel_dp->train_set[0]); |
e3421a18 ZW |
1857 | DP = (DP & ~EDP_LINK_TRAIN_VOL_EMP_MASK_SNB) | signal_levels; |
1858 | } else { | |
93f62dad | 1859 | signal_levels = intel_dp_signal_levels(intel_dp->train_set[0]); |
e3421a18 ZW |
1860 | DP = (DP & ~(DP_VOLTAGE_MASK|DP_PRE_EMPHASIS_MASK)) | signal_levels; |
1861 | } | |
1862 | ||
a4fc5ed6 | 1863 | /* channel eq pattern */ |
47ea7542 | 1864 | if (!intel_dp_set_link_train(intel_dp, DP, |
81055854 AJ |
1865 | DP_TRAINING_PATTERN_2 | |
1866 | DP_LINK_SCRAMBLING_DISABLE)) | |
a4fc5ed6 KP |
1867 | break; |
1868 | ||
3cf2efb1 | 1869 | udelay(400); |
93f62dad | 1870 | if (!intel_dp_get_link_status(intel_dp, link_status)) |
a4fc5ed6 | 1871 | break; |
a4fc5ed6 | 1872 | |
37f80975 | 1873 | /* Make sure clock is still ok */ |
93f62dad | 1874 | if (!intel_clock_recovery_ok(link_status, intel_dp->lane_count)) { |
37f80975 JB |
1875 | intel_dp_start_link_train(intel_dp); |
1876 | cr_tries++; | |
1877 | continue; | |
1878 | } | |
1879 | ||
93f62dad | 1880 | if (intel_channel_eq_ok(intel_dp, link_status)) { |
3cf2efb1 CW |
1881 | channel_eq = true; |
1882 | break; | |
1883 | } | |
a4fc5ed6 | 1884 | |
37f80975 JB |
1885 | /* Try 5 times, then try clock recovery if that fails */ |
1886 | if (tries > 5) { | |
1887 | intel_dp_link_down(intel_dp); | |
1888 | intel_dp_start_link_train(intel_dp); | |
1889 | tries = 0; | |
1890 | cr_tries++; | |
1891 | continue; | |
1892 | } | |
a4fc5ed6 | 1893 | |
3cf2efb1 | 1894 | /* Compute new intel_dp->train_set as requested by target */ |
93f62dad | 1895 | intel_get_adjust_train(intel_dp, link_status); |
3cf2efb1 | 1896 | ++tries; |
869184a6 | 1897 | } |
3cf2efb1 | 1898 | |
47ea7542 | 1899 | intel_dp_set_link_train(intel_dp, DP, DP_TRAINING_PATTERN_DISABLE); |
a4fc5ed6 KP |
1900 | } |
1901 | ||
1902 | static void | |
ea5b213a | 1903 | intel_dp_link_down(struct intel_dp *intel_dp) |
a4fc5ed6 | 1904 | { |
4ef69c7a | 1905 | struct drm_device *dev = intel_dp->base.base.dev; |
a4fc5ed6 | 1906 | struct drm_i915_private *dev_priv = dev->dev_private; |
ea5b213a | 1907 | uint32_t DP = intel_dp->DP; |
a4fc5ed6 | 1908 | |
0c33d8d7 | 1909 | if (WARN_ON((I915_READ(intel_dp->output_reg) & DP_PORT_EN) == 0)) |
1b39d6f3 CW |
1910 | return; |
1911 | ||
28c97730 | 1912 | DRM_DEBUG_KMS("\n"); |
32f9d658 | 1913 | |
1a2eb460 | 1914 | if (HAS_PCH_CPT(dev) && (IS_GEN7(dev) || !is_cpu_edp(intel_dp))) { |
e3421a18 | 1915 | DP &= ~DP_LINK_TRAIN_MASK_CPT; |
ea5b213a | 1916 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE_CPT); |
e3421a18 ZW |
1917 | } else { |
1918 | DP &= ~DP_LINK_TRAIN_MASK; | |
ea5b213a | 1919 | I915_WRITE(intel_dp->output_reg, DP | DP_LINK_TRAIN_PAT_IDLE); |
e3421a18 | 1920 | } |
fe255d00 | 1921 | POSTING_READ(intel_dp->output_reg); |
5eb08b69 | 1922 | |
fe255d00 | 1923 | msleep(17); |
5eb08b69 | 1924 | |
493a7081 | 1925 | if (HAS_PCH_IBX(dev) && |
1b39d6f3 | 1926 | I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { |
31acbcc4 CW |
1927 | struct drm_crtc *crtc = intel_dp->base.base.crtc; |
1928 | ||
5bddd17f EA |
1929 | /* Hardware workaround: leaving our transcoder select |
1930 | * set to transcoder B while it's off will prevent the | |
1931 | * corresponding HDMI output on transcoder A. | |
1932 | * | |
1933 | * Combine this with another hardware workaround: | |
1934 | * transcoder select bit can only be cleared while the | |
1935 | * port is enabled. | |
1936 | */ | |
1937 | DP &= ~DP_PIPEB_SELECT; | |
1938 | I915_WRITE(intel_dp->output_reg, DP); | |
1939 | ||
1940 | /* Changes to enable or select take place the vblank | |
1941 | * after being written. | |
1942 | */ | |
31acbcc4 CW |
1943 | if (crtc == NULL) { |
1944 | /* We can arrive here never having been attached | |
1945 | * to a CRTC, for instance, due to inheriting | |
1946 | * random state from the BIOS. | |
1947 | * | |
1948 | * If the pipe is not running, play safe and | |
1949 | * wait for the clocks to stabilise before | |
1950 | * continuing. | |
1951 | */ | |
1952 | POSTING_READ(intel_dp->output_reg); | |
1953 | msleep(50); | |
1954 | } else | |
1955 | intel_wait_for_vblank(dev, to_intel_crtc(crtc)->pipe); | |
5bddd17f EA |
1956 | } |
1957 | ||
832afda6 | 1958 | DP &= ~DP_AUDIO_OUTPUT_ENABLE; |
ea5b213a CW |
1959 | I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN); |
1960 | POSTING_READ(intel_dp->output_reg); | |
f01eca2e | 1961 | msleep(intel_dp->panel_power_down_delay); |
a4fc5ed6 KP |
1962 | } |
1963 | ||
26d61aad KP |
1964 | static bool |
1965 | intel_dp_get_dpcd(struct intel_dp *intel_dp) | |
92fd8fd1 | 1966 | { |
92fd8fd1 | 1967 | if (intel_dp_aux_native_read_retry(intel_dp, 0x000, intel_dp->dpcd, |
edb39244 AJ |
1968 | sizeof(intel_dp->dpcd)) == 0) |
1969 | return false; /* aux transfer failed */ | |
92fd8fd1 | 1970 | |
edb39244 AJ |
1971 | if (intel_dp->dpcd[DP_DPCD_REV] == 0) |
1972 | return false; /* DPCD not present */ | |
1973 | ||
1974 | if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & | |
1975 | DP_DWN_STRM_PORT_PRESENT)) | |
1976 | return true; /* native DP sink */ | |
1977 | ||
1978 | if (intel_dp->dpcd[DP_DPCD_REV] == 0x10) | |
1979 | return true; /* no per-port downstream info */ | |
1980 | ||
1981 | if (intel_dp_aux_native_read_retry(intel_dp, DP_DOWNSTREAM_PORT_0, | |
1982 | intel_dp->downstream_ports, | |
1983 | DP_MAX_DOWNSTREAM_PORTS) == 0) | |
1984 | return false; /* downstream port status fetch failed */ | |
1985 | ||
1986 | return true; | |
92fd8fd1 KP |
1987 | } |
1988 | ||
0d198328 AJ |
1989 | static void |
1990 | intel_dp_probe_oui(struct intel_dp *intel_dp) | |
1991 | { | |
1992 | u8 buf[3]; | |
1993 | ||
1994 | if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) | |
1995 | return; | |
1996 | ||
351cfc34 DV |
1997 | ironlake_edp_panel_vdd_on(intel_dp); |
1998 | ||
0d198328 AJ |
1999 | if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3)) |
2000 | DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n", | |
2001 | buf[0], buf[1], buf[2]); | |
2002 | ||
2003 | if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3)) | |
2004 | DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n", | |
2005 | buf[0], buf[1], buf[2]); | |
351cfc34 DV |
2006 | |
2007 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
0d198328 AJ |
2008 | } |
2009 | ||
a60f0e38 JB |
2010 | static bool |
2011 | intel_dp_get_sink_irq(struct intel_dp *intel_dp, u8 *sink_irq_vector) | |
2012 | { | |
2013 | int ret; | |
2014 | ||
2015 | ret = intel_dp_aux_native_read_retry(intel_dp, | |
2016 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2017 | sink_irq_vector, 1); | |
2018 | if (!ret) | |
2019 | return false; | |
2020 | ||
2021 | return true; | |
2022 | } | |
2023 | ||
2024 | static void | |
2025 | intel_dp_handle_test_request(struct intel_dp *intel_dp) | |
2026 | { | |
2027 | /* NAK by default */ | |
2028 | intel_dp_aux_native_write_1(intel_dp, DP_TEST_RESPONSE, DP_TEST_ACK); | |
2029 | } | |
2030 | ||
a4fc5ed6 KP |
2031 | /* |
2032 | * According to DP spec | |
2033 | * 5.1.2: | |
2034 | * 1. Read DPCD | |
2035 | * 2. Configure link according to Receiver Capabilities | |
2036 | * 3. Use Link Training from 2.5.3.3 and 3.5.1.3 | |
2037 | * 4. Check link status on receipt of hot-plug interrupt | |
2038 | */ | |
2039 | ||
2040 | static void | |
ea5b213a | 2041 | intel_dp_check_link_status(struct intel_dp *intel_dp) |
a4fc5ed6 | 2042 | { |
a60f0e38 | 2043 | u8 sink_irq_vector; |
93f62dad | 2044 | u8 link_status[DP_LINK_STATUS_SIZE]; |
a60f0e38 | 2045 | |
24e804ba | 2046 | if (!intel_dp->base.connectors_active) |
d2b996ac | 2047 | return; |
59cd09e1 | 2048 | |
24e804ba | 2049 | if (WARN_ON(!intel_dp->base.base.crtc)) |
a4fc5ed6 KP |
2050 | return; |
2051 | ||
92fd8fd1 | 2052 | /* Try to read receiver status if the link appears to be up */ |
93f62dad | 2053 | if (!intel_dp_get_link_status(intel_dp, link_status)) { |
ea5b213a | 2054 | intel_dp_link_down(intel_dp); |
a4fc5ed6 KP |
2055 | return; |
2056 | } | |
2057 | ||
92fd8fd1 | 2058 | /* Now read the DPCD to see if it's actually running */ |
26d61aad | 2059 | if (!intel_dp_get_dpcd(intel_dp)) { |
59cd09e1 JB |
2060 | intel_dp_link_down(intel_dp); |
2061 | return; | |
2062 | } | |
2063 | ||
a60f0e38 JB |
2064 | /* Try to read the source of the interrupt */ |
2065 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 && | |
2066 | intel_dp_get_sink_irq(intel_dp, &sink_irq_vector)) { | |
2067 | /* Clear interrupt source */ | |
2068 | intel_dp_aux_native_write_1(intel_dp, | |
2069 | DP_DEVICE_SERVICE_IRQ_VECTOR, | |
2070 | sink_irq_vector); | |
2071 | ||
2072 | if (sink_irq_vector & DP_AUTOMATED_TEST_REQUEST) | |
2073 | intel_dp_handle_test_request(intel_dp); | |
2074 | if (sink_irq_vector & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ)) | |
2075 | DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n"); | |
2076 | } | |
2077 | ||
93f62dad | 2078 | if (!intel_channel_eq_ok(intel_dp, link_status)) { |
92fd8fd1 KP |
2079 | DRM_DEBUG_KMS("%s: channel EQ not ok, retraining\n", |
2080 | drm_get_encoder_name(&intel_dp->base.base)); | |
33a34e4e JB |
2081 | intel_dp_start_link_train(intel_dp); |
2082 | intel_dp_complete_link_train(intel_dp); | |
2083 | } | |
a4fc5ed6 | 2084 | } |
a4fc5ed6 | 2085 | |
caf9ab24 | 2086 | /* XXX this is probably wrong for multiple downstream ports */ |
71ba9000 | 2087 | static enum drm_connector_status |
26d61aad | 2088 | intel_dp_detect_dpcd(struct intel_dp *intel_dp) |
71ba9000 | 2089 | { |
caf9ab24 AJ |
2090 | uint8_t *dpcd = intel_dp->dpcd; |
2091 | bool hpd; | |
2092 | uint8_t type; | |
2093 | ||
2094 | if (!intel_dp_get_dpcd(intel_dp)) | |
2095 | return connector_status_disconnected; | |
2096 | ||
2097 | /* if there's no downstream port, we're done */ | |
2098 | if (!(dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) | |
2099 | return connector_status_connected; | |
2100 | ||
2101 | /* If we're HPD-aware, SINK_COUNT changes dynamically */ | |
2102 | hpd = !!(intel_dp->downstream_ports[0] & DP_DS_PORT_HPD); | |
2103 | if (hpd) { | |
23235177 | 2104 | uint8_t reg; |
caf9ab24 | 2105 | if (!intel_dp_aux_native_read_retry(intel_dp, DP_SINK_COUNT, |
23235177 | 2106 | ®, 1)) |
caf9ab24 | 2107 | return connector_status_unknown; |
23235177 AJ |
2108 | return DP_GET_SINK_COUNT(reg) ? connector_status_connected |
2109 | : connector_status_disconnected; | |
caf9ab24 AJ |
2110 | } |
2111 | ||
2112 | /* If no HPD, poke DDC gently */ | |
2113 | if (drm_probe_ddc(&intel_dp->adapter)) | |
26d61aad | 2114 | return connector_status_connected; |
caf9ab24 AJ |
2115 | |
2116 | /* Well we tried, say unknown for unreliable port types */ | |
2117 | type = intel_dp->downstream_ports[0] & DP_DS_PORT_TYPE_MASK; | |
2118 | if (type == DP_DS_PORT_TYPE_VGA || type == DP_DS_PORT_TYPE_NON_EDID) | |
2119 | return connector_status_unknown; | |
2120 | ||
2121 | /* Anything else is out of spec, warn and ignore */ | |
2122 | DRM_DEBUG_KMS("Broken DP branch device, ignoring\n"); | |
26d61aad | 2123 | return connector_status_disconnected; |
71ba9000 AJ |
2124 | } |
2125 | ||
5eb08b69 | 2126 | static enum drm_connector_status |
a9756bb5 | 2127 | ironlake_dp_detect(struct intel_dp *intel_dp) |
5eb08b69 | 2128 | { |
5eb08b69 ZW |
2129 | enum drm_connector_status status; |
2130 | ||
fe16d949 CW |
2131 | /* Can't disconnect eDP, but you can close the lid... */ |
2132 | if (is_edp(intel_dp)) { | |
2133 | status = intel_panel_detect(intel_dp->base.base.dev); | |
2134 | if (status == connector_status_unknown) | |
2135 | status = connector_status_connected; | |
2136 | return status; | |
2137 | } | |
01cb9ea6 | 2138 | |
26d61aad | 2139 | return intel_dp_detect_dpcd(intel_dp); |
5eb08b69 ZW |
2140 | } |
2141 | ||
a4fc5ed6 | 2142 | static enum drm_connector_status |
a9756bb5 | 2143 | g4x_dp_detect(struct intel_dp *intel_dp) |
a4fc5ed6 | 2144 | { |
4ef69c7a | 2145 | struct drm_device *dev = intel_dp->base.base.dev; |
a4fc5ed6 | 2146 | struct drm_i915_private *dev_priv = dev->dev_private; |
10f76a38 | 2147 | uint32_t bit; |
5eb08b69 | 2148 | |
ea5b213a | 2149 | switch (intel_dp->output_reg) { |
a4fc5ed6 | 2150 | case DP_B: |
10f76a38 | 2151 | bit = DPB_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2152 | break; |
2153 | case DP_C: | |
10f76a38 | 2154 | bit = DPC_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2155 | break; |
2156 | case DP_D: | |
10f76a38 | 2157 | bit = DPD_HOTPLUG_LIVE_STATUS; |
a4fc5ed6 KP |
2158 | break; |
2159 | default: | |
2160 | return connector_status_unknown; | |
2161 | } | |
2162 | ||
10f76a38 | 2163 | if ((I915_READ(PORT_HOTPLUG_STAT) & bit) == 0) |
a4fc5ed6 KP |
2164 | return connector_status_disconnected; |
2165 | ||
26d61aad | 2166 | return intel_dp_detect_dpcd(intel_dp); |
a9756bb5 ZW |
2167 | } |
2168 | ||
8c241fef KP |
2169 | static struct edid * |
2170 | intel_dp_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2171 | { | |
2172 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2173 | struct edid *edid; | |
d6f24d0f JB |
2174 | int size; |
2175 | ||
2176 | if (is_edp(intel_dp)) { | |
2177 | if (!intel_dp->edid) | |
2178 | return NULL; | |
2179 | ||
2180 | size = (intel_dp->edid->extensions + 1) * EDID_LENGTH; | |
2181 | edid = kmalloc(size, GFP_KERNEL); | |
2182 | if (!edid) | |
2183 | return NULL; | |
2184 | ||
2185 | memcpy(edid, intel_dp->edid, size); | |
2186 | return edid; | |
2187 | } | |
8c241fef | 2188 | |
8c241fef | 2189 | edid = drm_get_edid(connector, adapter); |
8c241fef KP |
2190 | return edid; |
2191 | } | |
2192 | ||
2193 | static int | |
2194 | intel_dp_get_edid_modes(struct drm_connector *connector, struct i2c_adapter *adapter) | |
2195 | { | |
2196 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2197 | int ret; | |
2198 | ||
d6f24d0f JB |
2199 | if (is_edp(intel_dp)) { |
2200 | drm_mode_connector_update_edid_property(connector, | |
2201 | intel_dp->edid); | |
2202 | ret = drm_add_edid_modes(connector, intel_dp->edid); | |
2203 | drm_edid_to_eld(connector, | |
2204 | intel_dp->edid); | |
d6f24d0f JB |
2205 | return intel_dp->edid_mode_count; |
2206 | } | |
2207 | ||
8c241fef | 2208 | ret = intel_ddc_get_modes(connector, adapter); |
8c241fef KP |
2209 | return ret; |
2210 | } | |
2211 | ||
2212 | ||
a9756bb5 ZW |
2213 | /** |
2214 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect DP connection. | |
2215 | * | |
2216 | * \return true if DP port is connected. | |
2217 | * \return false if DP port is disconnected. | |
2218 | */ | |
2219 | static enum drm_connector_status | |
2220 | intel_dp_detect(struct drm_connector *connector, bool force) | |
2221 | { | |
2222 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2223 | struct drm_device *dev = intel_dp->base.base.dev; | |
2224 | enum drm_connector_status status; | |
2225 | struct edid *edid = NULL; | |
2226 | ||
2227 | intel_dp->has_audio = false; | |
2228 | ||
2229 | if (HAS_PCH_SPLIT(dev)) | |
2230 | status = ironlake_dp_detect(intel_dp); | |
2231 | else | |
2232 | status = g4x_dp_detect(intel_dp); | |
1b9be9d0 | 2233 | |
ac66ae83 AJ |
2234 | DRM_DEBUG_KMS("DPCD: %02hx%02hx%02hx%02hx%02hx%02hx%02hx%02hx\n", |
2235 | intel_dp->dpcd[0], intel_dp->dpcd[1], intel_dp->dpcd[2], | |
2236 | intel_dp->dpcd[3], intel_dp->dpcd[4], intel_dp->dpcd[5], | |
2237 | intel_dp->dpcd[6], intel_dp->dpcd[7]); | |
1b9be9d0 | 2238 | |
a9756bb5 ZW |
2239 | if (status != connector_status_connected) |
2240 | return status; | |
2241 | ||
0d198328 AJ |
2242 | intel_dp_probe_oui(intel_dp); |
2243 | ||
c3e5f67b DV |
2244 | if (intel_dp->force_audio != HDMI_AUDIO_AUTO) { |
2245 | intel_dp->has_audio = (intel_dp->force_audio == HDMI_AUDIO_ON); | |
f684960e | 2246 | } else { |
8c241fef | 2247 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
f684960e CW |
2248 | if (edid) { |
2249 | intel_dp->has_audio = drm_detect_monitor_audio(edid); | |
f684960e CW |
2250 | kfree(edid); |
2251 | } | |
a9756bb5 ZW |
2252 | } |
2253 | ||
2254 | return connector_status_connected; | |
a4fc5ed6 KP |
2255 | } |
2256 | ||
2257 | static int intel_dp_get_modes(struct drm_connector *connector) | |
2258 | { | |
df0e9248 | 2259 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
4ef69c7a | 2260 | struct drm_device *dev = intel_dp->base.base.dev; |
32f9d658 ZW |
2261 | struct drm_i915_private *dev_priv = dev->dev_private; |
2262 | int ret; | |
a4fc5ed6 KP |
2263 | |
2264 | /* We should parse the EDID data and find out if it has an audio sink | |
2265 | */ | |
2266 | ||
8c241fef | 2267 | ret = intel_dp_get_edid_modes(connector, &intel_dp->adapter); |
b9efc480 | 2268 | if (ret) { |
d15456de | 2269 | if (is_edp(intel_dp) && !intel_dp->panel_fixed_mode) { |
b9efc480 ZY |
2270 | struct drm_display_mode *newmode; |
2271 | list_for_each_entry(newmode, &connector->probed_modes, | |
2272 | head) { | |
d15456de KP |
2273 | if ((newmode->type & DRM_MODE_TYPE_PREFERRED)) { |
2274 | intel_dp->panel_fixed_mode = | |
b9efc480 ZY |
2275 | drm_mode_duplicate(dev, newmode); |
2276 | break; | |
2277 | } | |
2278 | } | |
2279 | } | |
32f9d658 | 2280 | return ret; |
b9efc480 | 2281 | } |
32f9d658 ZW |
2282 | |
2283 | /* if eDP has no EDID, try to use fixed panel mode from VBT */ | |
4d926461 | 2284 | if (is_edp(intel_dp)) { |
47f0eb22 | 2285 | /* initialize panel mode from VBT if available for eDP */ |
d15456de KP |
2286 | if (intel_dp->panel_fixed_mode == NULL && dev_priv->lfp_lvds_vbt_mode != NULL) { |
2287 | intel_dp->panel_fixed_mode = | |
47f0eb22 | 2288 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
d15456de KP |
2289 | if (intel_dp->panel_fixed_mode) { |
2290 | intel_dp->panel_fixed_mode->type |= | |
47f0eb22 KP |
2291 | DRM_MODE_TYPE_PREFERRED; |
2292 | } | |
2293 | } | |
d15456de | 2294 | if (intel_dp->panel_fixed_mode) { |
32f9d658 | 2295 | struct drm_display_mode *mode; |
d15456de | 2296 | mode = drm_mode_duplicate(dev, intel_dp->panel_fixed_mode); |
32f9d658 ZW |
2297 | drm_mode_probed_add(connector, mode); |
2298 | return 1; | |
2299 | } | |
2300 | } | |
2301 | return 0; | |
a4fc5ed6 KP |
2302 | } |
2303 | ||
1aad7ac0 CW |
2304 | static bool |
2305 | intel_dp_detect_audio(struct drm_connector *connector) | |
2306 | { | |
2307 | struct intel_dp *intel_dp = intel_attached_dp(connector); | |
2308 | struct edid *edid; | |
2309 | bool has_audio = false; | |
2310 | ||
8c241fef | 2311 | edid = intel_dp_get_edid(connector, &intel_dp->adapter); |
1aad7ac0 CW |
2312 | if (edid) { |
2313 | has_audio = drm_detect_monitor_audio(edid); | |
1aad7ac0 CW |
2314 | kfree(edid); |
2315 | } | |
2316 | ||
2317 | return has_audio; | |
2318 | } | |
2319 | ||
f684960e CW |
2320 | static int |
2321 | intel_dp_set_property(struct drm_connector *connector, | |
2322 | struct drm_property *property, | |
2323 | uint64_t val) | |
2324 | { | |
e953fd7b | 2325 | struct drm_i915_private *dev_priv = connector->dev->dev_private; |
f684960e CW |
2326 | struct intel_dp *intel_dp = intel_attached_dp(connector); |
2327 | int ret; | |
2328 | ||
2329 | ret = drm_connector_property_set_value(connector, property, val); | |
2330 | if (ret) | |
2331 | return ret; | |
2332 | ||
3f43c48d | 2333 | if (property == dev_priv->force_audio_property) { |
1aad7ac0 CW |
2334 | int i = val; |
2335 | bool has_audio; | |
2336 | ||
2337 | if (i == intel_dp->force_audio) | |
f684960e CW |
2338 | return 0; |
2339 | ||
1aad7ac0 | 2340 | intel_dp->force_audio = i; |
f684960e | 2341 | |
c3e5f67b | 2342 | if (i == HDMI_AUDIO_AUTO) |
1aad7ac0 CW |
2343 | has_audio = intel_dp_detect_audio(connector); |
2344 | else | |
c3e5f67b | 2345 | has_audio = (i == HDMI_AUDIO_ON); |
1aad7ac0 CW |
2346 | |
2347 | if (has_audio == intel_dp->has_audio) | |
f684960e CW |
2348 | return 0; |
2349 | ||
1aad7ac0 | 2350 | intel_dp->has_audio = has_audio; |
f684960e CW |
2351 | goto done; |
2352 | } | |
2353 | ||
e953fd7b CW |
2354 | if (property == dev_priv->broadcast_rgb_property) { |
2355 | if (val == !!intel_dp->color_range) | |
2356 | return 0; | |
2357 | ||
2358 | intel_dp->color_range = val ? DP_COLOR_RANGE_16_235 : 0; | |
2359 | goto done; | |
2360 | } | |
2361 | ||
f684960e CW |
2362 | return -EINVAL; |
2363 | ||
2364 | done: | |
2365 | if (intel_dp->base.base.crtc) { | |
2366 | struct drm_crtc *crtc = intel_dp->base.base.crtc; | |
a6778b3c DV |
2367 | intel_set_mode(crtc, &crtc->mode, |
2368 | crtc->x, crtc->y, crtc->fb); | |
f684960e CW |
2369 | } |
2370 | ||
2371 | return 0; | |
2372 | } | |
2373 | ||
a4fc5ed6 | 2374 | static void |
0206e353 | 2375 | intel_dp_destroy(struct drm_connector *connector) |
a4fc5ed6 | 2376 | { |
aaa6fd2a MG |
2377 | struct drm_device *dev = connector->dev; |
2378 | ||
2379 | if (intel_dpd_is_edp(dev)) | |
2380 | intel_panel_destroy_backlight(dev); | |
2381 | ||
a4fc5ed6 KP |
2382 | drm_sysfs_connector_remove(connector); |
2383 | drm_connector_cleanup(connector); | |
55f78c43 | 2384 | kfree(connector); |
a4fc5ed6 KP |
2385 | } |
2386 | ||
24d05927 DV |
2387 | static void intel_dp_encoder_destroy(struct drm_encoder *encoder) |
2388 | { | |
2389 | struct intel_dp *intel_dp = enc_to_intel_dp(encoder); | |
2390 | ||
2391 | i2c_del_adapter(&intel_dp->adapter); | |
2392 | drm_encoder_cleanup(encoder); | |
bd943159 | 2393 | if (is_edp(intel_dp)) { |
d6f24d0f | 2394 | kfree(intel_dp->edid); |
bd943159 KP |
2395 | cancel_delayed_work_sync(&intel_dp->panel_vdd_work); |
2396 | ironlake_panel_vdd_off_sync(intel_dp); | |
2397 | } | |
24d05927 DV |
2398 | kfree(intel_dp); |
2399 | } | |
2400 | ||
a4fc5ed6 | 2401 | static const struct drm_encoder_helper_funcs intel_dp_helper_funcs = { |
a4fc5ed6 | 2402 | .mode_fixup = intel_dp_mode_fixup, |
a4fc5ed6 | 2403 | .mode_set = intel_dp_mode_set, |
1f703855 | 2404 | .disable = intel_encoder_noop, |
a4fc5ed6 KP |
2405 | }; |
2406 | ||
2407 | static const struct drm_connector_funcs intel_dp_connector_funcs = { | |
2bd2ad64 | 2408 | .dpms = intel_connector_dpms, |
a4fc5ed6 KP |
2409 | .detect = intel_dp_detect, |
2410 | .fill_modes = drm_helper_probe_single_connector_modes, | |
f684960e | 2411 | .set_property = intel_dp_set_property, |
a4fc5ed6 KP |
2412 | .destroy = intel_dp_destroy, |
2413 | }; | |
2414 | ||
2415 | static const struct drm_connector_helper_funcs intel_dp_connector_helper_funcs = { | |
2416 | .get_modes = intel_dp_get_modes, | |
2417 | .mode_valid = intel_dp_mode_valid, | |
df0e9248 | 2418 | .best_encoder = intel_best_encoder, |
a4fc5ed6 KP |
2419 | }; |
2420 | ||
a4fc5ed6 | 2421 | static const struct drm_encoder_funcs intel_dp_enc_funcs = { |
24d05927 | 2422 | .destroy = intel_dp_encoder_destroy, |
a4fc5ed6 KP |
2423 | }; |
2424 | ||
995b6762 | 2425 | static void |
21d40d37 | 2426 | intel_dp_hot_plug(struct intel_encoder *intel_encoder) |
c8110e52 | 2427 | { |
ea5b213a | 2428 | struct intel_dp *intel_dp = container_of(intel_encoder, struct intel_dp, base); |
c8110e52 | 2429 | |
885a5014 | 2430 | intel_dp_check_link_status(intel_dp); |
c8110e52 | 2431 | } |
6207937d | 2432 | |
e3421a18 ZW |
2433 | /* Return which DP Port should be selected for Transcoder DP control */ |
2434 | int | |
0206e353 | 2435 | intel_trans_dp_port_sel(struct drm_crtc *crtc) |
e3421a18 ZW |
2436 | { |
2437 | struct drm_device *dev = crtc->dev; | |
6c2b7c12 | 2438 | struct intel_encoder *encoder; |
e3421a18 | 2439 | |
6c2b7c12 DV |
2440 | for_each_encoder_on_crtc(dev, crtc, encoder) { |
2441 | struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base); | |
e3421a18 | 2442 | |
417e822d KP |
2443 | if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT || |
2444 | intel_dp->base.type == INTEL_OUTPUT_EDP) | |
ea5b213a | 2445 | return intel_dp->output_reg; |
e3421a18 | 2446 | } |
ea5b213a | 2447 | |
e3421a18 ZW |
2448 | return -1; |
2449 | } | |
2450 | ||
36e83a18 | 2451 | /* check the VBT to see whether the eDP is on DP-D port */ |
cb0953d7 | 2452 | bool intel_dpd_is_edp(struct drm_device *dev) |
36e83a18 ZY |
2453 | { |
2454 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2455 | struct child_device_config *p_child; | |
2456 | int i; | |
2457 | ||
2458 | if (!dev_priv->child_dev_num) | |
2459 | return false; | |
2460 | ||
2461 | for (i = 0; i < dev_priv->child_dev_num; i++) { | |
2462 | p_child = dev_priv->child_dev + i; | |
2463 | ||
2464 | if (p_child->dvo_port == PORT_IDPD && | |
2465 | p_child->device_type == DEVICE_TYPE_eDP) | |
2466 | return true; | |
2467 | } | |
2468 | return false; | |
2469 | } | |
2470 | ||
f684960e CW |
2471 | static void |
2472 | intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connector) | |
2473 | { | |
3f43c48d | 2474 | intel_attach_force_audio_property(connector); |
e953fd7b | 2475 | intel_attach_broadcast_rgb_property(connector); |
f684960e CW |
2476 | } |
2477 | ||
a4fc5ed6 | 2478 | void |
ab9d7c30 | 2479 | intel_dp_init(struct drm_device *dev, int output_reg, enum port port) |
a4fc5ed6 KP |
2480 | { |
2481 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2482 | struct drm_connector *connector; | |
ea5b213a | 2483 | struct intel_dp *intel_dp; |
21d40d37 | 2484 | struct intel_encoder *intel_encoder; |
55f78c43 | 2485 | struct intel_connector *intel_connector; |
5eb08b69 | 2486 | const char *name = NULL; |
b329530c | 2487 | int type; |
a4fc5ed6 | 2488 | |
ea5b213a CW |
2489 | intel_dp = kzalloc(sizeof(struct intel_dp), GFP_KERNEL); |
2490 | if (!intel_dp) | |
a4fc5ed6 KP |
2491 | return; |
2492 | ||
3d3dc149 | 2493 | intel_dp->output_reg = output_reg; |
ab9d7c30 | 2494 | intel_dp->port = port; |
0767935e DV |
2495 | /* Preserve the current hw state. */ |
2496 | intel_dp->DP = I915_READ(intel_dp->output_reg); | |
3d3dc149 | 2497 | |
55f78c43 ZW |
2498 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); |
2499 | if (!intel_connector) { | |
ea5b213a | 2500 | kfree(intel_dp); |
55f78c43 ZW |
2501 | return; |
2502 | } | |
ea5b213a | 2503 | intel_encoder = &intel_dp->base; |
55f78c43 | 2504 | |
ea5b213a | 2505 | if (HAS_PCH_SPLIT(dev) && output_reg == PCH_DP_D) |
b329530c | 2506 | if (intel_dpd_is_edp(dev)) |
ea5b213a | 2507 | intel_dp->is_pch_edp = true; |
b329530c | 2508 | |
cfcb0fc9 | 2509 | if (output_reg == DP_A || is_pch_edp(intel_dp)) { |
b329530c AJ |
2510 | type = DRM_MODE_CONNECTOR_eDP; |
2511 | intel_encoder->type = INTEL_OUTPUT_EDP; | |
2512 | } else { | |
2513 | type = DRM_MODE_CONNECTOR_DisplayPort; | |
2514 | intel_encoder->type = INTEL_OUTPUT_DISPLAYPORT; | |
2515 | } | |
2516 | ||
55f78c43 | 2517 | connector = &intel_connector->base; |
b329530c | 2518 | drm_connector_init(dev, connector, &intel_dp_connector_funcs, type); |
a4fc5ed6 KP |
2519 | drm_connector_helper_add(connector, &intel_dp_connector_helper_funcs); |
2520 | ||
eb1f8e4f DA |
2521 | connector->polled = DRM_CONNECTOR_POLL_HPD; |
2522 | ||
66a9278e | 2523 | intel_encoder->cloneable = false; |
f8aed700 | 2524 | |
66a9278e DV |
2525 | INIT_DELAYED_WORK(&intel_dp->panel_vdd_work, |
2526 | ironlake_panel_vdd_work); | |
6251ec0a | 2527 | |
27f8227b | 2528 | intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
ee7b9f93 | 2529 | |
a4fc5ed6 KP |
2530 | connector->interlace_allowed = true; |
2531 | connector->doublescan_allowed = 0; | |
2532 | ||
4ef69c7a | 2533 | drm_encoder_init(dev, &intel_encoder->base, &intel_dp_enc_funcs, |
a4fc5ed6 | 2534 | DRM_MODE_ENCODER_TMDS); |
4ef69c7a | 2535 | drm_encoder_helper_add(&intel_encoder->base, &intel_dp_helper_funcs); |
a4fc5ed6 | 2536 | |
df0e9248 | 2537 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
a4fc5ed6 KP |
2538 | drm_sysfs_connector_add(connector); |
2539 | ||
e8cb4558 | 2540 | intel_encoder->enable = intel_enable_dp; |
2bd2ad64 | 2541 | intel_encoder->pre_enable = intel_pre_enable_dp; |
e8cb4558 | 2542 | intel_encoder->disable = intel_disable_dp; |
2bd2ad64 | 2543 | intel_encoder->post_disable = intel_post_disable_dp; |
19d8fe15 DV |
2544 | intel_encoder->get_hw_state = intel_dp_get_hw_state; |
2545 | intel_connector->get_hw_state = intel_connector_get_hw_state; | |
e8cb4558 | 2546 | |
a4fc5ed6 | 2547 | /* Set up the DDC bus. */ |
ab9d7c30 PZ |
2548 | switch (port) { |
2549 | case PORT_A: | |
2550 | name = "DPDDC-A"; | |
2551 | break; | |
2552 | case PORT_B: | |
2553 | dev_priv->hotplug_supported_mask |= DPB_HOTPLUG_INT_STATUS; | |
2554 | name = "DPDDC-B"; | |
2555 | break; | |
2556 | case PORT_C: | |
2557 | dev_priv->hotplug_supported_mask |= DPC_HOTPLUG_INT_STATUS; | |
2558 | name = "DPDDC-C"; | |
2559 | break; | |
2560 | case PORT_D: | |
2561 | dev_priv->hotplug_supported_mask |= DPD_HOTPLUG_INT_STATUS; | |
2562 | name = "DPDDC-D"; | |
2563 | break; | |
2564 | default: | |
2565 | WARN(1, "Invalid port %c\n", port_name(port)); | |
2566 | break; | |
5eb08b69 ZW |
2567 | } |
2568 | ||
89667383 JB |
2569 | /* Cache some DPCD data in the eDP case */ |
2570 | if (is_edp(intel_dp)) { | |
f01eca2e KP |
2571 | struct edp_power_seq cur, vbt; |
2572 | u32 pp_on, pp_off, pp_div; | |
5d613501 JB |
2573 | |
2574 | pp_on = I915_READ(PCH_PP_ON_DELAYS); | |
f01eca2e | 2575 | pp_off = I915_READ(PCH_PP_OFF_DELAYS); |
5d613501 | 2576 | pp_div = I915_READ(PCH_PP_DIVISOR); |
89667383 | 2577 | |
bfa3384a JB |
2578 | if (!pp_on || !pp_off || !pp_div) { |
2579 | DRM_INFO("bad panel power sequencing delays, disabling panel\n"); | |
2580 | intel_dp_encoder_destroy(&intel_dp->base.base); | |
2581 | intel_dp_destroy(&intel_connector->base); | |
2582 | return; | |
2583 | } | |
2584 | ||
f01eca2e KP |
2585 | /* Pull timing values out of registers */ |
2586 | cur.t1_t3 = (pp_on & PANEL_POWER_UP_DELAY_MASK) >> | |
2587 | PANEL_POWER_UP_DELAY_SHIFT; | |
2588 | ||
2589 | cur.t8 = (pp_on & PANEL_LIGHT_ON_DELAY_MASK) >> | |
2590 | PANEL_LIGHT_ON_DELAY_SHIFT; | |
f2e8b18a | 2591 | |
f01eca2e KP |
2592 | cur.t9 = (pp_off & PANEL_LIGHT_OFF_DELAY_MASK) >> |
2593 | PANEL_LIGHT_OFF_DELAY_SHIFT; | |
2594 | ||
2595 | cur.t10 = (pp_off & PANEL_POWER_DOWN_DELAY_MASK) >> | |
2596 | PANEL_POWER_DOWN_DELAY_SHIFT; | |
2597 | ||
2598 | cur.t11_t12 = ((pp_div & PANEL_POWER_CYCLE_DELAY_MASK) >> | |
2599 | PANEL_POWER_CYCLE_DELAY_SHIFT) * 1000; | |
2600 | ||
2601 | DRM_DEBUG_KMS("cur t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
2602 | cur.t1_t3, cur.t8, cur.t9, cur.t10, cur.t11_t12); | |
2603 | ||
2604 | vbt = dev_priv->edp.pps; | |
2605 | ||
2606 | DRM_DEBUG_KMS("vbt t1_t3 %d t8 %d t9 %d t10 %d t11_t12 %d\n", | |
2607 | vbt.t1_t3, vbt.t8, vbt.t9, vbt.t10, vbt.t11_t12); | |
2608 | ||
2609 | #define get_delay(field) ((max(cur.field, vbt.field) + 9) / 10) | |
2610 | ||
2611 | intel_dp->panel_power_up_delay = get_delay(t1_t3); | |
2612 | intel_dp->backlight_on_delay = get_delay(t8); | |
2613 | intel_dp->backlight_off_delay = get_delay(t9); | |
2614 | intel_dp->panel_power_down_delay = get_delay(t10); | |
2615 | intel_dp->panel_power_cycle_delay = get_delay(t11_t12); | |
2616 | ||
2617 | DRM_DEBUG_KMS("panel power up delay %d, power down delay %d, power cycle delay %d\n", | |
2618 | intel_dp->panel_power_up_delay, intel_dp->panel_power_down_delay, | |
2619 | intel_dp->panel_power_cycle_delay); | |
2620 | ||
2621 | DRM_DEBUG_KMS("backlight on delay %d, off delay %d\n", | |
2622 | intel_dp->backlight_on_delay, intel_dp->backlight_off_delay); | |
c1f05264 DA |
2623 | } |
2624 | ||
2625 | intel_dp_i2c_init(intel_dp, intel_connector, name); | |
2626 | ||
2627 | if (is_edp(intel_dp)) { | |
2628 | bool ret; | |
2629 | struct edid *edid; | |
5d613501 JB |
2630 | |
2631 | ironlake_edp_panel_vdd_on(intel_dp); | |
59f3e272 | 2632 | ret = intel_dp_get_dpcd(intel_dp); |
bd943159 | 2633 | ironlake_edp_panel_vdd_off(intel_dp, false); |
99ea7127 | 2634 | |
59f3e272 | 2635 | if (ret) { |
7183dc29 JB |
2636 | if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11) |
2637 | dev_priv->no_aux_handshake = | |
2638 | intel_dp->dpcd[DP_MAX_DOWNSPREAD] & | |
89667383 JB |
2639 | DP_NO_AUX_HANDSHAKE_LINK_TRAINING; |
2640 | } else { | |
3d3dc149 | 2641 | /* if this fails, presume the device is a ghost */ |
48898b03 | 2642 | DRM_INFO("failed to retrieve link info, disabling eDP\n"); |
3d3dc149 | 2643 | intel_dp_encoder_destroy(&intel_dp->base.base); |
48898b03 | 2644 | intel_dp_destroy(&intel_connector->base); |
3d3dc149 | 2645 | return; |
89667383 | 2646 | } |
89667383 | 2647 | |
d6f24d0f JB |
2648 | ironlake_edp_panel_vdd_on(intel_dp); |
2649 | edid = drm_get_edid(connector, &intel_dp->adapter); | |
2650 | if (edid) { | |
2651 | drm_mode_connector_update_edid_property(connector, | |
2652 | edid); | |
2653 | intel_dp->edid_mode_count = | |
2654 | drm_add_edid_modes(connector, edid); | |
2655 | drm_edid_to_eld(connector, edid); | |
2656 | intel_dp->edid = edid; | |
2657 | } | |
2658 | ironlake_edp_panel_vdd_off(intel_dp, false); | |
2659 | } | |
552fb0b7 | 2660 | |
21d40d37 | 2661 | intel_encoder->hot_plug = intel_dp_hot_plug; |
a4fc5ed6 | 2662 | |
4d926461 | 2663 | if (is_edp(intel_dp)) { |
aaa6fd2a MG |
2664 | dev_priv->int_edp_connector = connector; |
2665 | intel_panel_setup_backlight(dev); | |
32f9d658 ZW |
2666 | } |
2667 | ||
f684960e CW |
2668 | intel_dp_add_properties(intel_dp, connector); |
2669 | ||
a4fc5ed6 KP |
2670 | /* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written |
2671 | * 0xd. Failure to do so will result in spurious interrupts being | |
2672 | * generated on the port when a cable is not attached. | |
2673 | */ | |
2674 | if (IS_G4X(dev) && !IS_GM45(dev)) { | |
2675 | u32 temp = I915_READ(PEG_BAND_GAP_DATA); | |
2676 | I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd); | |
2677 | } | |
2678 | } |