Commit | Line | Data |
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79e53945 JB |
1 | /* |
2 | * Copyright © 2006-2007 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | */ | |
26 | ||
8ca4013d | 27 | #include <linux/dmi.h> |
79e53945 | 28 | #include <linux/i2c.h> |
5a0e3ad6 | 29 | #include <linux/slab.h> |
760285e7 | 30 | #include <drm/drmP.h> |
c6f95f27 | 31 | #include <drm/drm_atomic_helper.h> |
760285e7 DH |
32 | #include <drm/drm_crtc.h> |
33 | #include <drm/drm_crtc_helper.h> | |
34 | #include <drm/drm_edid.h> | |
79e53945 | 35 | #include "intel_drv.h" |
760285e7 | 36 | #include <drm/i915_drm.h> |
79e53945 JB |
37 | #include "i915_drv.h" |
38 | ||
e7dbb2f2 KP |
39 | /* Here's the desired hotplug mode */ |
40 | #define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \ | |
41 | ADPA_CRT_HOTPLUG_WARMUP_10MS | \ | |
42 | ADPA_CRT_HOTPLUG_SAMPLE_4S | \ | |
43 | ADPA_CRT_HOTPLUG_VOLTAGE_50 | \ | |
44 | ADPA_CRT_HOTPLUG_VOLREF_325MV | \ | |
45 | ADPA_CRT_HOTPLUG_ENABLE) | |
46 | ||
c9a1c4cd CW |
47 | struct intel_crt { |
48 | struct intel_encoder base; | |
637f44d2 AJ |
49 | /* DPMS state is stored in the connector, which we need in the |
50 | * encoder's enable/disable callbacks */ | |
51 | struct intel_connector *connector; | |
e7dbb2f2 | 52 | bool force_hotplug_required; |
f0f59a00 | 53 | i915_reg_t adpa_reg; |
c9a1c4cd CW |
54 | }; |
55 | ||
eebe6f0b | 56 | static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder) |
c9a1c4cd | 57 | { |
eebe6f0b | 58 | return container_of(encoder, struct intel_crt, base); |
c9a1c4cd CW |
59 | } |
60 | ||
eebe6f0b | 61 | static struct intel_crt *intel_attached_crt(struct drm_connector *connector) |
79e53945 | 62 | { |
eebe6f0b | 63 | return intel_encoder_to_crt(intel_attached_encoder(connector)); |
540a8950 DV |
64 | } |
65 | ||
e403fc94 DV |
66 | static bool intel_crt_get_hw_state(struct intel_encoder *encoder, |
67 | enum pipe *pipe) | |
79e53945 | 68 | { |
e403fc94 | 69 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 70 | struct drm_i915_private *dev_priv = to_i915(dev); |
e403fc94 | 71 | struct intel_crt *crt = intel_encoder_to_crt(encoder); |
6d129bea | 72 | enum intel_display_power_domain power_domain; |
e403fc94 | 73 | u32 tmp; |
1c8fdda1 | 74 | bool ret; |
e403fc94 | 75 | |
6d129bea | 76 | power_domain = intel_display_port_power_domain(encoder); |
1c8fdda1 | 77 | if (!intel_display_power_get_if_enabled(dev_priv, power_domain)) |
6d129bea ID |
78 | return false; |
79 | ||
1c8fdda1 ID |
80 | ret = false; |
81 | ||
e403fc94 DV |
82 | tmp = I915_READ(crt->adpa_reg); |
83 | ||
84 | if (!(tmp & ADPA_DAC_ENABLE)) | |
1c8fdda1 | 85 | goto out; |
e403fc94 DV |
86 | |
87 | if (HAS_PCH_CPT(dev)) | |
88 | *pipe = PORT_TO_PIPE_CPT(tmp); | |
89 | else | |
90 | *pipe = PORT_TO_PIPE(tmp); | |
91 | ||
1c8fdda1 ID |
92 | ret = true; |
93 | out: | |
94 | intel_display_power_put(dev_priv, power_domain); | |
95 | ||
96 | return ret; | |
e403fc94 DV |
97 | } |
98 | ||
6801c18c | 99 | static unsigned int intel_crt_get_flags(struct intel_encoder *encoder) |
045ac3b5 | 100 | { |
fac5e23e | 101 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
045ac3b5 JB |
102 | struct intel_crt *crt = intel_encoder_to_crt(encoder); |
103 | u32 tmp, flags = 0; | |
104 | ||
105 | tmp = I915_READ(crt->adpa_reg); | |
106 | ||
107 | if (tmp & ADPA_HSYNC_ACTIVE_HIGH) | |
108 | flags |= DRM_MODE_FLAG_PHSYNC; | |
109 | else | |
110 | flags |= DRM_MODE_FLAG_NHSYNC; | |
111 | ||
112 | if (tmp & ADPA_VSYNC_ACTIVE_HIGH) | |
113 | flags |= DRM_MODE_FLAG_PVSYNC; | |
114 | else | |
115 | flags |= DRM_MODE_FLAG_NVSYNC; | |
116 | ||
6801c18c VS |
117 | return flags; |
118 | } | |
119 | ||
120 | static void intel_crt_get_config(struct intel_encoder *encoder, | |
5cec258b | 121 | struct intel_crtc_state *pipe_config) |
6801c18c | 122 | { |
2d112de7 | 123 | pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder); |
18442d08 | 124 | |
e3b247da | 125 | pipe_config->base.adjusted_mode.crtc_clock = pipe_config->port_clock; |
045ac3b5 JB |
126 | } |
127 | ||
6801c18c | 128 | static void hsw_crt_get_config(struct intel_encoder *encoder, |
5cec258b | 129 | struct intel_crtc_state *pipe_config) |
6801c18c | 130 | { |
8802e5b6 VS |
131 | struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); |
132 | ||
6801c18c VS |
133 | intel_ddi_get_config(encoder, pipe_config); |
134 | ||
2d112de7 | 135 | pipe_config->base.adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC | |
6801c18c VS |
136 | DRM_MODE_FLAG_NHSYNC | |
137 | DRM_MODE_FLAG_PVSYNC | | |
138 | DRM_MODE_FLAG_NVSYNC); | |
2d112de7 | 139 | pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder); |
8802e5b6 VS |
140 | |
141 | pipe_config->base.adjusted_mode.crtc_clock = lpt_get_iclkip(dev_priv); | |
6801c18c VS |
142 | } |
143 | ||
b2cabb0e DV |
144 | /* Note: The caller is required to filter out dpms modes not supported by the |
145 | * platform. */ | |
146 | static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode) | |
df0323c4 | 147 | { |
b2cabb0e | 148 | struct drm_device *dev = encoder->base.dev; |
fac5e23e | 149 | struct drm_i915_private *dev_priv = to_i915(dev); |
b2cabb0e | 150 | struct intel_crt *crt = intel_encoder_to_crt(encoder); |
894ed1ec | 151 | struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc); |
7c5f93b0 | 152 | const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; |
894ed1ec DV |
153 | u32 adpa; |
154 | ||
155 | if (INTEL_INFO(dev)->gen >= 5) | |
156 | adpa = ADPA_HOTPLUG_BITS; | |
157 | else | |
158 | adpa = 0; | |
df0323c4 | 159 | |
894ed1ec DV |
160 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) |
161 | adpa |= ADPA_HSYNC_ACTIVE_HIGH; | |
162 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
163 | adpa |= ADPA_VSYNC_ACTIVE_HIGH; | |
164 | ||
165 | /* For CPT allow 3 pipe config, for others just use A or B */ | |
166 | if (HAS_PCH_LPT(dev)) | |
167 | ; /* Those bits don't exist here */ | |
168 | else if (HAS_PCH_CPT(dev)) | |
169 | adpa |= PORT_TRANS_SEL_CPT(crtc->pipe); | |
170 | else if (crtc->pipe == 0) | |
171 | adpa |= ADPA_PIPE_A_SELECT; | |
172 | else | |
173 | adpa |= ADPA_PIPE_B_SELECT; | |
174 | ||
175 | if (!HAS_PCH_SPLIT(dev)) | |
176 | I915_WRITE(BCLRPAT(crtc->pipe), 0); | |
79e53945 | 177 | |
0206e353 | 178 | switch (mode) { |
79e53945 | 179 | case DRM_MODE_DPMS_ON: |
894ed1ec | 180 | adpa |= ADPA_DAC_ENABLE; |
79e53945 JB |
181 | break; |
182 | case DRM_MODE_DPMS_STANDBY: | |
894ed1ec | 183 | adpa |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE; |
79e53945 JB |
184 | break; |
185 | case DRM_MODE_DPMS_SUSPEND: | |
894ed1ec | 186 | adpa |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE; |
79e53945 JB |
187 | break; |
188 | case DRM_MODE_DPMS_OFF: | |
894ed1ec | 189 | adpa |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE; |
79e53945 JB |
190 | break; |
191 | } | |
192 | ||
894ed1ec | 193 | I915_WRITE(crt->adpa_reg, adpa); |
df0323c4 | 194 | } |
2c07245f | 195 | |
637f44d2 AJ |
196 | static void intel_disable_crt(struct intel_encoder *encoder) |
197 | { | |
198 | intel_crt_set_dpms(encoder, DRM_MODE_DPMS_OFF); | |
199 | } | |
200 | ||
1ea56e26 VS |
201 | static void pch_disable_crt(struct intel_encoder *encoder) |
202 | { | |
203 | } | |
204 | ||
205 | static void pch_post_disable_crt(struct intel_encoder *encoder) | |
206 | { | |
207 | intel_disable_crt(encoder); | |
208 | } | |
abfdc1e3 | 209 | |
637f44d2 AJ |
210 | static void intel_enable_crt(struct intel_encoder *encoder) |
211 | { | |
7bb4afb4 | 212 | intel_crt_set_dpms(encoder, DRM_MODE_DPMS_ON); |
637f44d2 AJ |
213 | } |
214 | ||
c19de8eb DL |
215 | static enum drm_mode_status |
216 | intel_crt_mode_valid(struct drm_connector *connector, | |
217 | struct drm_display_mode *mode) | |
79e53945 | 218 | { |
6bcdcd9e | 219 | struct drm_device *dev = connector->dev; |
f8700b34 | 220 | int max_dotclk = to_i915(dev)->max_dotclk_freq; |
debded84 | 221 | int max_clock; |
6bcdcd9e | 222 | |
79e53945 JB |
223 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
224 | return MODE_NO_DBLESCAN; | |
225 | ||
6bcdcd9e ZY |
226 | if (mode->clock < 25000) |
227 | return MODE_CLOCK_LOW; | |
228 | ||
debded84 VS |
229 | if (HAS_PCH_LPT(dev)) |
230 | max_clock = 180000; | |
231 | else if (IS_VALLEYVIEW(dev)) | |
232 | /* | |
233 | * 270 MHz due to current DPLL limits, | |
234 | * DAC limit supposedly 355 MHz. | |
235 | */ | |
236 | max_clock = 270000; | |
237 | else if (IS_GEN3(dev) || IS_GEN4(dev)) | |
6bcdcd9e | 238 | max_clock = 400000; |
debded84 VS |
239 | else |
240 | max_clock = 350000; | |
6bcdcd9e ZY |
241 | if (mode->clock > max_clock) |
242 | return MODE_CLOCK_HIGH; | |
79e53945 | 243 | |
f8700b34 MK |
244 | if (mode->clock > max_dotclk) |
245 | return MODE_CLOCK_HIGH; | |
246 | ||
d4b1931c PZ |
247 | /* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */ |
248 | if (HAS_PCH_LPT(dev) && | |
249 | (ironlake_get_lanes_required(mode->clock, 270000, 24) > 2)) | |
250 | return MODE_CLOCK_HIGH; | |
251 | ||
79e53945 JB |
252 | return MODE_OK; |
253 | } | |
254 | ||
5bfe2ac0 | 255 | static bool intel_crt_compute_config(struct intel_encoder *encoder, |
5cec258b | 256 | struct intel_crtc_state *pipe_config) |
79e53945 | 257 | { |
5bfe2ac0 DV |
258 | struct drm_device *dev = encoder->base.dev; |
259 | ||
260 | if (HAS_PCH_SPLIT(dev)) | |
261 | pipe_config->has_pch_encoder = true; | |
262 | ||
2a7aceec | 263 | /* LPT FDI RX only supports 8bpc. */ |
f58a1acc DV |
264 | if (HAS_PCH_LPT(dev)) { |
265 | if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) { | |
266 | DRM_DEBUG_KMS("LPT only supports 24bpp\n"); | |
267 | return false; | |
268 | } | |
269 | ||
2a7aceec | 270 | pipe_config->pipe_bpp = 24; |
f58a1acc | 271 | } |
2a7aceec | 272 | |
8f7abfd8 | 273 | /* FDI must always be 2.7 GHz */ |
daedf20a | 274 | if (HAS_DDI(dev)) |
8f7abfd8 | 275 | pipe_config->port_clock = 135000 * 2; |
00490c22 | 276 | |
79e53945 JB |
277 | return true; |
278 | } | |
279 | ||
f2b115e6 | 280 | static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector) |
2c07245f ZW |
281 | { |
282 | struct drm_device *dev = connector->dev; | |
e7dbb2f2 | 283 | struct intel_crt *crt = intel_attached_crt(connector); |
fac5e23e | 284 | struct drm_i915_private *dev_priv = to_i915(dev); |
e7dbb2f2 | 285 | u32 adpa; |
2c07245f ZW |
286 | bool ret; |
287 | ||
e7dbb2f2 KP |
288 | /* The first time through, trigger an explicit detection cycle */ |
289 | if (crt->force_hotplug_required) { | |
290 | bool turn_off_dac = HAS_PCH_SPLIT(dev); | |
291 | u32 save_adpa; | |
67941da2 | 292 | |
e7dbb2f2 KP |
293 | crt->force_hotplug_required = 0; |
294 | ||
ca54b810 | 295 | save_adpa = adpa = I915_READ(crt->adpa_reg); |
e7dbb2f2 KP |
296 | DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa); |
297 | ||
298 | adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER; | |
299 | if (turn_off_dac) | |
300 | adpa &= ~ADPA_DAC_ENABLE; | |
301 | ||
ca54b810 | 302 | I915_WRITE(crt->adpa_reg, adpa); |
e7dbb2f2 | 303 | |
e1672d1c CW |
304 | if (intel_wait_for_register(dev_priv, |
305 | crt->adpa_reg, | |
306 | ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0, | |
307 | 1000)) | |
e7dbb2f2 KP |
308 | DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER"); |
309 | ||
310 | if (turn_off_dac) { | |
ca54b810 VS |
311 | I915_WRITE(crt->adpa_reg, save_adpa); |
312 | POSTING_READ(crt->adpa_reg); | |
e7dbb2f2 | 313 | } |
a4a6b901 ZW |
314 | } |
315 | ||
2c07245f | 316 | /* Check the status to see if both blue and green are on now */ |
ca54b810 | 317 | adpa = I915_READ(crt->adpa_reg); |
e7dbb2f2 | 318 | if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0) |
2c07245f ZW |
319 | ret = true; |
320 | else | |
321 | ret = false; | |
e7dbb2f2 | 322 | DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret); |
2c07245f | 323 | |
2c07245f | 324 | return ret; |
79e53945 JB |
325 | } |
326 | ||
7d2c24e8 JB |
327 | static bool valleyview_crt_detect_hotplug(struct drm_connector *connector) |
328 | { | |
329 | struct drm_device *dev = connector->dev; | |
ca54b810 | 330 | struct intel_crt *crt = intel_attached_crt(connector); |
fac5e23e | 331 | struct drm_i915_private *dev_priv = to_i915(dev); |
7d2c24e8 JB |
332 | u32 adpa; |
333 | bool ret; | |
334 | u32 save_adpa; | |
335 | ||
ca54b810 | 336 | save_adpa = adpa = I915_READ(crt->adpa_reg); |
7d2c24e8 JB |
337 | DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa); |
338 | ||
339 | adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER; | |
340 | ||
ca54b810 | 341 | I915_WRITE(crt->adpa_reg, adpa); |
7d2c24e8 | 342 | |
a522ae4b CW |
343 | if (intel_wait_for_register(dev_priv, |
344 | crt->adpa_reg, | |
345 | ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0, | |
346 | 1000)) { | |
7d2c24e8 | 347 | DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER"); |
ca54b810 | 348 | I915_WRITE(crt->adpa_reg, save_adpa); |
7d2c24e8 JB |
349 | } |
350 | ||
351 | /* Check the status to see if both blue and green are on now */ | |
ca54b810 | 352 | adpa = I915_READ(crt->adpa_reg); |
7d2c24e8 JB |
353 | if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0) |
354 | ret = true; | |
355 | else | |
356 | ret = false; | |
357 | ||
358 | DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret); | |
359 | ||
7d2c24e8 JB |
360 | return ret; |
361 | } | |
362 | ||
79e53945 JB |
363 | /** |
364 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence. | |
365 | * | |
366 | * Not for i915G/i915GM | |
367 | * | |
368 | * \return true if CRT is connected. | |
369 | * \return false if CRT is disconnected. | |
370 | */ | |
371 | static bool intel_crt_detect_hotplug(struct drm_connector *connector) | |
372 | { | |
373 | struct drm_device *dev = connector->dev; | |
fac5e23e | 374 | struct drm_i915_private *dev_priv = to_i915(dev); |
0706f17c | 375 | u32 stat; |
7a772c49 | 376 | bool ret = false; |
771cb081 | 377 | int i, tries = 0; |
2c07245f | 378 | |
bad720ff | 379 | if (HAS_PCH_SPLIT(dev)) |
f2b115e6 | 380 | return intel_ironlake_crt_detect_hotplug(connector); |
2c07245f | 381 | |
7d2c24e8 JB |
382 | if (IS_VALLEYVIEW(dev)) |
383 | return valleyview_crt_detect_hotplug(connector); | |
384 | ||
771cb081 ZY |
385 | /* |
386 | * On 4 series desktop, CRT detect sequence need to be done twice | |
387 | * to get a reliable result. | |
388 | */ | |
79e53945 | 389 | |
771cb081 ZY |
390 | if (IS_G4X(dev) && !IS_GM45(dev)) |
391 | tries = 2; | |
392 | else | |
393 | tries = 1; | |
771cb081 | 394 | |
771cb081 | 395 | for (i = 0; i < tries ; i++) { |
771cb081 | 396 | /* turn on the FORCE_DETECT */ |
0706f17c EE |
397 | i915_hotplug_interrupt_update(dev_priv, |
398 | CRT_HOTPLUG_FORCE_DETECT, | |
399 | CRT_HOTPLUG_FORCE_DETECT); | |
771cb081 | 400 | /* wait for FORCE_DETECT to go off */ |
fd3790d4 CW |
401 | if (intel_wait_for_register(dev_priv, PORT_HOTPLUG_EN, |
402 | CRT_HOTPLUG_FORCE_DETECT, 0, | |
403 | 1000)) | |
79077319 | 404 | DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off"); |
771cb081 | 405 | } |
79e53945 | 406 | |
7a772c49 AJ |
407 | stat = I915_READ(PORT_HOTPLUG_STAT); |
408 | if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE) | |
409 | ret = true; | |
410 | ||
411 | /* clear the interrupt we just generated, if any */ | |
412 | I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS); | |
79e53945 | 413 | |
0706f17c | 414 | i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0); |
7a772c49 AJ |
415 | |
416 | return ret; | |
79e53945 JB |
417 | } |
418 | ||
f1a2f5b7 JN |
419 | static struct edid *intel_crt_get_edid(struct drm_connector *connector, |
420 | struct i2c_adapter *i2c) | |
421 | { | |
422 | struct edid *edid; | |
423 | ||
424 | edid = drm_get_edid(connector, i2c); | |
425 | ||
426 | if (!edid && !intel_gmbus_is_forced_bit(i2c)) { | |
427 | DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n"); | |
428 | intel_gmbus_force_bit(i2c, true); | |
429 | edid = drm_get_edid(connector, i2c); | |
430 | intel_gmbus_force_bit(i2c, false); | |
431 | } | |
432 | ||
433 | return edid; | |
434 | } | |
435 | ||
436 | /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */ | |
437 | static int intel_crt_ddc_get_modes(struct drm_connector *connector, | |
438 | struct i2c_adapter *adapter) | |
439 | { | |
440 | struct edid *edid; | |
ebda95a9 | 441 | int ret; |
f1a2f5b7 JN |
442 | |
443 | edid = intel_crt_get_edid(connector, adapter); | |
444 | if (!edid) | |
445 | return 0; | |
446 | ||
ebda95a9 JN |
447 | ret = intel_connector_update_modes(connector, edid); |
448 | kfree(edid); | |
449 | ||
450 | return ret; | |
f1a2f5b7 JN |
451 | } |
452 | ||
f5afcd3d | 453 | static bool intel_crt_detect_ddc(struct drm_connector *connector) |
79e53945 | 454 | { |
f5afcd3d | 455 | struct intel_crt *crt = intel_attached_crt(connector); |
fac5e23e | 456 | struct drm_i915_private *dev_priv = to_i915(crt->base.base.dev); |
a2bd1f54 DV |
457 | struct edid *edid; |
458 | struct i2c_adapter *i2c; | |
79e53945 | 459 | |
a2bd1f54 | 460 | BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG); |
79e53945 | 461 | |
41aa3448 | 462 | i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin); |
f1a2f5b7 | 463 | edid = intel_crt_get_edid(connector, i2c); |
a2bd1f54 DV |
464 | |
465 | if (edid) { | |
466 | bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL; | |
f5afcd3d | 467 | |
f5afcd3d DM |
468 | /* |
469 | * This may be a DVI-I connector with a shared DDC | |
470 | * link between analog and digital outputs, so we | |
471 | * have to check the EDID input spec of the attached device. | |
472 | */ | |
f5afcd3d DM |
473 | if (!is_digital) { |
474 | DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n"); | |
475 | return true; | |
476 | } | |
a2bd1f54 DV |
477 | |
478 | DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n"); | |
479 | } else { | |
480 | DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n"); | |
6ec3d0c0 CW |
481 | } |
482 | ||
a2bd1f54 DV |
483 | kfree(edid); |
484 | ||
6ec3d0c0 | 485 | return false; |
79e53945 JB |
486 | } |
487 | ||
e4a5d54f | 488 | static enum drm_connector_status |
c8ecb2f1 | 489 | intel_crt_load_detect(struct intel_crt *crt, uint32_t pipe) |
e4a5d54f | 490 | { |
7173188d | 491 | struct drm_device *dev = crt->base.base.dev; |
fac5e23e | 492 | struct drm_i915_private *dev_priv = to_i915(dev); |
e4a5d54f ML |
493 | uint32_t save_bclrpat; |
494 | uint32_t save_vtotal; | |
495 | uint32_t vtotal, vactive; | |
496 | uint32_t vsample; | |
497 | uint32_t vblank, vblank_start, vblank_end; | |
498 | uint32_t dsl; | |
f0f59a00 VS |
499 | i915_reg_t bclrpat_reg, vtotal_reg, |
500 | vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg; | |
e4a5d54f ML |
501 | uint8_t st00; |
502 | enum drm_connector_status status; | |
503 | ||
6ec3d0c0 CW |
504 | DRM_DEBUG_KMS("starting load-detect on CRT\n"); |
505 | ||
9db4a9c7 JB |
506 | bclrpat_reg = BCLRPAT(pipe); |
507 | vtotal_reg = VTOTAL(pipe); | |
508 | vblank_reg = VBLANK(pipe); | |
509 | vsync_reg = VSYNC(pipe); | |
510 | pipeconf_reg = PIPECONF(pipe); | |
511 | pipe_dsl_reg = PIPEDSL(pipe); | |
e4a5d54f ML |
512 | |
513 | save_bclrpat = I915_READ(bclrpat_reg); | |
514 | save_vtotal = I915_READ(vtotal_reg); | |
515 | vblank = I915_READ(vblank_reg); | |
516 | ||
517 | vtotal = ((save_vtotal >> 16) & 0xfff) + 1; | |
518 | vactive = (save_vtotal & 0x7ff) + 1; | |
519 | ||
520 | vblank_start = (vblank & 0xfff) + 1; | |
521 | vblank_end = ((vblank >> 16) & 0xfff) + 1; | |
522 | ||
523 | /* Set the border color to purple. */ | |
524 | I915_WRITE(bclrpat_reg, 0x500050); | |
525 | ||
a6c45cf0 | 526 | if (!IS_GEN2(dev)) { |
e4a5d54f ML |
527 | uint32_t pipeconf = I915_READ(pipeconf_reg); |
528 | I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER); | |
19c55da1 | 529 | POSTING_READ(pipeconf_reg); |
e4a5d54f ML |
530 | /* Wait for next Vblank to substitue |
531 | * border color for Color info */ | |
9d0498a2 | 532 | intel_wait_for_vblank(dev, pipe); |
f0f59a00 | 533 | st00 = I915_READ8(_VGA_MSR_WRITE); |
e4a5d54f ML |
534 | status = ((st00 & (1 << 4)) != 0) ? |
535 | connector_status_connected : | |
536 | connector_status_disconnected; | |
537 | ||
538 | I915_WRITE(pipeconf_reg, pipeconf); | |
539 | } else { | |
540 | bool restore_vblank = false; | |
541 | int count, detect; | |
542 | ||
543 | /* | |
544 | * If there isn't any border, add some. | |
545 | * Yes, this will flicker | |
546 | */ | |
547 | if (vblank_start <= vactive && vblank_end >= vtotal) { | |
548 | uint32_t vsync = I915_READ(vsync_reg); | |
549 | uint32_t vsync_start = (vsync & 0xffff) + 1; | |
550 | ||
551 | vblank_start = vsync_start; | |
552 | I915_WRITE(vblank_reg, | |
553 | (vblank_start - 1) | | |
554 | ((vblank_end - 1) << 16)); | |
555 | restore_vblank = true; | |
556 | } | |
557 | /* sample in the vertical border, selecting the larger one */ | |
558 | if (vblank_start - vactive >= vtotal - vblank_end) | |
559 | vsample = (vblank_start + vactive) >> 1; | |
560 | else | |
561 | vsample = (vtotal + vblank_end) >> 1; | |
562 | ||
563 | /* | |
564 | * Wait for the border to be displayed | |
565 | */ | |
566 | while (I915_READ(pipe_dsl_reg) >= vactive) | |
567 | ; | |
568 | while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample) | |
569 | ; | |
570 | /* | |
571 | * Watch ST00 for an entire scanline | |
572 | */ | |
573 | detect = 0; | |
574 | count = 0; | |
575 | do { | |
576 | count++; | |
577 | /* Read the ST00 VGA status register */ | |
f0f59a00 | 578 | st00 = I915_READ8(_VGA_MSR_WRITE); |
e4a5d54f ML |
579 | if (st00 & (1 << 4)) |
580 | detect++; | |
581 | } while ((I915_READ(pipe_dsl_reg) == dsl)); | |
582 | ||
583 | /* restore vblank if necessary */ | |
584 | if (restore_vblank) | |
585 | I915_WRITE(vblank_reg, vblank); | |
586 | /* | |
587 | * If more than 3/4 of the scanline detected a monitor, | |
588 | * then it is assumed to be present. This works even on i830, | |
589 | * where there isn't any way to force the border color across | |
590 | * the screen | |
591 | */ | |
592 | status = detect * 4 > count * 3 ? | |
593 | connector_status_connected : | |
594 | connector_status_disconnected; | |
595 | } | |
596 | ||
597 | /* Restore previous settings */ | |
598 | I915_WRITE(bclrpat_reg, save_bclrpat); | |
599 | ||
600 | return status; | |
601 | } | |
602 | ||
7b334fcb | 603 | static enum drm_connector_status |
930a9e28 | 604 | intel_crt_detect(struct drm_connector *connector, bool force) |
79e53945 JB |
605 | { |
606 | struct drm_device *dev = connector->dev; | |
fac5e23e | 607 | struct drm_i915_private *dev_priv = to_i915(dev); |
c9a1c4cd | 608 | struct intel_crt *crt = intel_attached_crt(connector); |
671dedd2 ID |
609 | struct intel_encoder *intel_encoder = &crt->base; |
610 | enum intel_display_power_domain power_domain; | |
e4a5d54f | 611 | enum drm_connector_status status; |
e95c8438 | 612 | struct intel_load_detect_pipe tmp; |
51fd371b | 613 | struct drm_modeset_acquire_ctx ctx; |
79e53945 | 614 | |
164c8598 | 615 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n", |
c23cc417 | 616 | connector->base.id, connector->name, |
164c8598 CW |
617 | force); |
618 | ||
671dedd2 ID |
619 | power_domain = intel_display_port_power_domain(intel_encoder); |
620 | intel_display_power_get(dev_priv, power_domain); | |
621 | ||
a6c45cf0 | 622 | if (I915_HAS_HOTPLUG(dev)) { |
aaa37730 DV |
623 | /* We can not rely on the HPD pin always being correctly wired |
624 | * up, for example many KVM do not pass it through, and so | |
625 | * only trust an assertion that the monitor is connected. | |
626 | */ | |
6ec3d0c0 CW |
627 | if (intel_crt_detect_hotplug(connector)) { |
628 | DRM_DEBUG_KMS("CRT detected via hotplug\n"); | |
c19a0df2 PZ |
629 | status = connector_status_connected; |
630 | goto out; | |
aaa37730 | 631 | } else |
e7dbb2f2 | 632 | DRM_DEBUG_KMS("CRT not detected via hotplug\n"); |
79e53945 JB |
633 | } |
634 | ||
c19a0df2 PZ |
635 | if (intel_crt_detect_ddc(connector)) { |
636 | status = connector_status_connected; | |
637 | goto out; | |
638 | } | |
79e53945 | 639 | |
aaa37730 DV |
640 | /* Load detection is broken on HPD capable machines. Whoever wants a |
641 | * broken monitor (without edid) to work behind a broken kvm (that fails | |
642 | * to have the right resistors for HP detection) needs to fix this up. | |
643 | * For now just bail out. */ | |
5bedeb2d | 644 | if (I915_HAS_HOTPLUG(dev) && !i915.load_detect_test) { |
c19a0df2 PZ |
645 | status = connector_status_disconnected; |
646 | goto out; | |
647 | } | |
aaa37730 | 648 | |
c19a0df2 PZ |
649 | if (!force) { |
650 | status = connector->status; | |
651 | goto out; | |
652 | } | |
7b334fcb | 653 | |
208bf9fd VS |
654 | drm_modeset_acquire_init(&ctx, 0); |
655 | ||
e4a5d54f | 656 | /* for pre-945g platforms use load detect */ |
51fd371b | 657 | if (intel_get_load_detect_pipe(connector, NULL, &tmp, &ctx)) { |
e95c8438 DV |
658 | if (intel_crt_detect_ddc(connector)) |
659 | status = connector_status_connected; | |
5bedeb2d | 660 | else if (INTEL_INFO(dev)->gen < 4) |
c8ecb2f1 ML |
661 | status = intel_crt_load_detect(crt, |
662 | to_intel_crtc(connector->state->crtc)->pipe); | |
32fff610 ML |
663 | else if (i915.load_detect_test) |
664 | status = connector_status_disconnected; | |
5bedeb2d DV |
665 | else |
666 | status = connector_status_unknown; | |
49172fee | 667 | intel_release_load_detect_pipe(connector, &tmp, &ctx); |
e95c8438 DV |
668 | } else |
669 | status = connector_status_unknown; | |
e4a5d54f | 670 | |
208bf9fd VS |
671 | drm_modeset_drop_locks(&ctx); |
672 | drm_modeset_acquire_fini(&ctx); | |
673 | ||
c19a0df2 | 674 | out: |
671dedd2 | 675 | intel_display_power_put(dev_priv, power_domain); |
e4a5d54f | 676 | return status; |
79e53945 JB |
677 | } |
678 | ||
679 | static void intel_crt_destroy(struct drm_connector *connector) | |
680 | { | |
79e53945 JB |
681 | drm_connector_cleanup(connector); |
682 | kfree(connector); | |
683 | } | |
684 | ||
685 | static int intel_crt_get_modes(struct drm_connector *connector) | |
686 | { | |
8e4d36b9 | 687 | struct drm_device *dev = connector->dev; |
fac5e23e | 688 | struct drm_i915_private *dev_priv = to_i915(dev); |
671dedd2 ID |
689 | struct intel_crt *crt = intel_attached_crt(connector); |
690 | struct intel_encoder *intel_encoder = &crt->base; | |
691 | enum intel_display_power_domain power_domain; | |
890f3359 | 692 | int ret; |
3bd7d909 | 693 | struct i2c_adapter *i2c; |
8e4d36b9 | 694 | |
671dedd2 ID |
695 | power_domain = intel_display_port_power_domain(intel_encoder); |
696 | intel_display_power_get(dev_priv, power_domain); | |
697 | ||
41aa3448 | 698 | i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin); |
f1a2f5b7 | 699 | ret = intel_crt_ddc_get_modes(connector, i2c); |
8e4d36b9 | 700 | if (ret || !IS_G4X(dev)) |
671dedd2 | 701 | goto out; |
8e4d36b9 | 702 | |
8e4d36b9 | 703 | /* Try to probe digital port for output in DVI-I -> VGA mode. */ |
988c7015 | 704 | i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB); |
671dedd2 ID |
705 | ret = intel_crt_ddc_get_modes(connector, i2c); |
706 | ||
707 | out: | |
708 | intel_display_power_put(dev_priv, power_domain); | |
709 | ||
710 | return ret; | |
79e53945 JB |
711 | } |
712 | ||
713 | static int intel_crt_set_property(struct drm_connector *connector, | |
714 | struct drm_property *property, | |
715 | uint64_t value) | |
716 | { | |
79e53945 JB |
717 | return 0; |
718 | } | |
719 | ||
9504a892 | 720 | void intel_crt_reset(struct drm_encoder *encoder) |
f3269058 | 721 | { |
28cf71ce | 722 | struct drm_device *dev = encoder->dev; |
fac5e23e | 723 | struct drm_i915_private *dev_priv = to_i915(dev); |
28cf71ce | 724 | struct intel_crt *crt = intel_encoder_to_crt(to_intel_encoder(encoder)); |
f3269058 | 725 | |
10603caa | 726 | if (INTEL_INFO(dev)->gen >= 5) { |
2e938892 DV |
727 | u32 adpa; |
728 | ||
ca54b810 | 729 | adpa = I915_READ(crt->adpa_reg); |
2e938892 DV |
730 | adpa &= ~ADPA_CRT_HOTPLUG_MASK; |
731 | adpa |= ADPA_HOTPLUG_BITS; | |
ca54b810 VS |
732 | I915_WRITE(crt->adpa_reg, adpa); |
733 | POSTING_READ(crt->adpa_reg); | |
2e938892 | 734 | |
0039a4b3 | 735 | DRM_DEBUG_KMS("crt adpa set to 0x%x\n", adpa); |
f3269058 | 736 | crt->force_hotplug_required = 1; |
2e938892 DV |
737 | } |
738 | ||
f3269058 CW |
739 | } |
740 | ||
79e53945 JB |
741 | /* |
742 | * Routines for controlling stuff on the analog port | |
743 | */ | |
744 | ||
79e53945 | 745 | static const struct drm_connector_funcs intel_crt_connector_funcs = { |
4d688a2a | 746 | .dpms = drm_atomic_helper_connector_dpms, |
79e53945 JB |
747 | .detect = intel_crt_detect, |
748 | .fill_modes = drm_helper_probe_single_connector_modes, | |
1ebaa0b9 | 749 | .late_register = intel_connector_register, |
c191eca1 | 750 | .early_unregister = intel_connector_unregister, |
79e53945 JB |
751 | .destroy = intel_crt_destroy, |
752 | .set_property = intel_crt_set_property, | |
c6f95f27 | 753 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 754 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
2545e4a6 | 755 | .atomic_get_property = intel_connector_atomic_get_property, |
79e53945 JB |
756 | }; |
757 | ||
758 | static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = { | |
759 | .mode_valid = intel_crt_mode_valid, | |
760 | .get_modes = intel_crt_get_modes, | |
79e53945 JB |
761 | }; |
762 | ||
79e53945 | 763 | static const struct drm_encoder_funcs intel_crt_enc_funcs = { |
28cf71ce | 764 | .reset = intel_crt_reset, |
ea5b213a | 765 | .destroy = intel_encoder_destroy, |
79e53945 JB |
766 | }; |
767 | ||
bbe1c274 | 768 | static int intel_no_crt_dmi_callback(const struct dmi_system_id *id) |
8ca4013d | 769 | { |
bc0daf48 | 770 | DRM_INFO("Skipping CRT initialization for %s\n", id->ident); |
8ca4013d DL |
771 | return 1; |
772 | } | |
773 | ||
774 | static const struct dmi_system_id intel_no_crt[] = { | |
775 | { | |
776 | .callback = intel_no_crt_dmi_callback, | |
777 | .ident = "ACER ZGB", | |
778 | .matches = { | |
779 | DMI_MATCH(DMI_SYS_VENDOR, "ACER"), | |
780 | DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"), | |
781 | }, | |
782 | }, | |
10b6ee4a GC |
783 | { |
784 | .callback = intel_no_crt_dmi_callback, | |
785 | .ident = "DELL XPS 8700", | |
786 | .matches = { | |
787 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
788 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS 8700"), | |
789 | }, | |
790 | }, | |
8ca4013d DL |
791 | { } |
792 | }; | |
793 | ||
79e53945 JB |
794 | void intel_crt_init(struct drm_device *dev) |
795 | { | |
796 | struct drm_connector *connector; | |
c9a1c4cd | 797 | struct intel_crt *crt; |
454c1ca8 | 798 | struct intel_connector *intel_connector; |
fac5e23e | 799 | struct drm_i915_private *dev_priv = to_i915(dev); |
6c03a6bd VS |
800 | i915_reg_t adpa_reg; |
801 | u32 adpa; | |
79e53945 | 802 | |
8ca4013d DL |
803 | /* Skip machines without VGA that falsely report hotplug events */ |
804 | if (dmi_check_system(intel_no_crt)) | |
805 | return; | |
806 | ||
6c03a6bd VS |
807 | if (HAS_PCH_SPLIT(dev)) |
808 | adpa_reg = PCH_ADPA; | |
809 | else if (IS_VALLEYVIEW(dev)) | |
810 | adpa_reg = VLV_ADPA; | |
811 | else | |
812 | adpa_reg = ADPA; | |
813 | ||
814 | adpa = I915_READ(adpa_reg); | |
815 | if ((adpa & ADPA_DAC_ENABLE) == 0) { | |
816 | /* | |
817 | * On some machines (some IVB at least) CRT can be | |
818 | * fused off, but there's no known fuse bit to | |
819 | * indicate that. On these machine the ADPA register | |
820 | * works normally, except the DAC enable bit won't | |
821 | * take. So the only way to tell is attempt to enable | |
822 | * it and see what happens. | |
823 | */ | |
824 | I915_WRITE(adpa_reg, adpa | ADPA_DAC_ENABLE | | |
825 | ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); | |
826 | if ((I915_READ(adpa_reg) & ADPA_DAC_ENABLE) == 0) | |
827 | return; | |
828 | I915_WRITE(adpa_reg, adpa); | |
829 | } | |
830 | ||
c9a1c4cd CW |
831 | crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL); |
832 | if (!crt) | |
79e53945 JB |
833 | return; |
834 | ||
9bdbd0b9 | 835 | intel_connector = intel_connector_alloc(); |
454c1ca8 | 836 | if (!intel_connector) { |
c9a1c4cd | 837 | kfree(crt); |
454c1ca8 ZW |
838 | return; |
839 | } | |
840 | ||
841 | connector = &intel_connector->base; | |
637f44d2 | 842 | crt->connector = intel_connector; |
454c1ca8 | 843 | drm_connector_init(dev, &intel_connector->base, |
79e53945 JB |
844 | &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); |
845 | ||
c9a1c4cd | 846 | drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs, |
580d8ed5 | 847 | DRM_MODE_ENCODER_DAC, "CRT"); |
79e53945 | 848 | |
c9a1c4cd | 849 | intel_connector_attach_encoder(intel_connector, &crt->base); |
79e53945 | 850 | |
c9a1c4cd | 851 | crt->base.type = INTEL_OUTPUT_ANALOG; |
301ea74a | 852 | crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI); |
d63fa0dc | 853 | if (IS_I830(dev)) |
59c859d6 ED |
854 | crt->base.crtc_mask = (1 << 0); |
855 | else | |
0826874a | 856 | crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
59c859d6 | 857 | |
dbb02575 DV |
858 | if (IS_GEN2(dev)) |
859 | connector->interlace_allowed = 0; | |
860 | else | |
861 | connector->interlace_allowed = 1; | |
79e53945 JB |
862 | connector->doublescan_allowed = 0; |
863 | ||
6c03a6bd | 864 | crt->adpa_reg = adpa_reg; |
540a8950 | 865 | |
5bfe2ac0 | 866 | crt->base.compute_config = intel_crt_compute_config; |
92966a37 | 867 | if (HAS_PCH_SPLIT(dev)) { |
1ea56e26 VS |
868 | crt->base.disable = pch_disable_crt; |
869 | crt->base.post_disable = pch_post_disable_crt; | |
870 | } else { | |
871 | crt->base.disable = intel_disable_crt; | |
872 | } | |
2124604b | 873 | crt->base.enable = intel_enable_crt; |
1d843f9d EE |
874 | if (I915_HAS_HOTPLUG(dev)) |
875 | crt->base.hpd_pin = HPD_CRT; | |
a2985791 VS |
876 | if (HAS_DDI(dev)) { |
877 | crt->base.get_config = hsw_crt_get_config; | |
4eda01b2 | 878 | crt->base.get_hw_state = intel_ddi_get_hw_state; |
a2985791 VS |
879 | } else { |
880 | crt->base.get_config = intel_crt_get_config; | |
4eda01b2 | 881 | crt->base.get_hw_state = intel_crt_get_hw_state; |
a2985791 | 882 | } |
e403fc94 | 883 | intel_connector->get_hw_state = intel_connector_get_hw_state; |
df0323c4 | 884 | |
79e53945 JB |
885 | drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs); |
886 | ||
821450c6 EE |
887 | if (!I915_HAS_HOTPLUG(dev)) |
888 | intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT; | |
eb1f8e4f | 889 | |
e7dbb2f2 KP |
890 | /* |
891 | * Configure the automatic hotplug detection stuff | |
892 | */ | |
893 | crt->force_hotplug_required = 0; | |
e7dbb2f2 | 894 | |
68d18ad7 | 895 | /* |
3e68320e DL |
896 | * TODO: find a proper way to discover whether we need to set the the |
897 | * polarity and link reversal bits or not, instead of relying on the | |
898 | * BIOS. | |
68d18ad7 | 899 | */ |
3e68320e DL |
900 | if (HAS_PCH_LPT(dev)) { |
901 | u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT | | |
902 | FDI_RX_LINK_REVERSAL_OVERRIDE; | |
903 | ||
eede3b53 | 904 | dev_priv->fdi_rx_config = I915_READ(FDI_RX_CTL(PIPE_A)) & fdi_config; |
3e68320e | 905 | } |
754970ee | 906 | |
28cf71ce | 907 | intel_crt_reset(&crt->base.base); |
79e53945 | 908 | } |