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); |
21842ea8 | 332 | bool reenable_hpd; |
7d2c24e8 JB |
333 | u32 adpa; |
334 | bool ret; | |
335 | u32 save_adpa; | |
336 | ||
21842ea8 L |
337 | /* |
338 | * Doing a force trigger causes a hpd interrupt to get sent, which can | |
339 | * get us stuck in a loop if we're polling: | |
340 | * - We enable power wells and reset the ADPA | |
341 | * - output_poll_exec does force probe on VGA, triggering a hpd | |
342 | * - HPD handler waits for poll to unlock dev->mode_config.mutex | |
343 | * - output_poll_exec shuts off the ADPA, unlocks | |
344 | * dev->mode_config.mutex | |
345 | * - HPD handler runs, resets ADPA and brings us back to the start | |
346 | * | |
347 | * Just disable HPD interrupts here to prevent this | |
348 | */ | |
349 | reenable_hpd = intel_hpd_disable(dev_priv, crt->base.hpd_pin); | |
350 | ||
ca54b810 | 351 | save_adpa = adpa = I915_READ(crt->adpa_reg); |
7d2c24e8 JB |
352 | DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa); |
353 | ||
354 | adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER; | |
355 | ||
ca54b810 | 356 | I915_WRITE(crt->adpa_reg, adpa); |
7d2c24e8 | 357 | |
a522ae4b CW |
358 | if (intel_wait_for_register(dev_priv, |
359 | crt->adpa_reg, | |
360 | ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0, | |
361 | 1000)) { | |
7d2c24e8 | 362 | DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER"); |
ca54b810 | 363 | I915_WRITE(crt->adpa_reg, save_adpa); |
7d2c24e8 JB |
364 | } |
365 | ||
366 | /* Check the status to see if both blue and green are on now */ | |
ca54b810 | 367 | adpa = I915_READ(crt->adpa_reg); |
7d2c24e8 JB |
368 | if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0) |
369 | ret = true; | |
370 | else | |
371 | ret = false; | |
372 | ||
373 | DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret); | |
374 | ||
21842ea8 L |
375 | if (reenable_hpd) |
376 | intel_hpd_enable(dev_priv, crt->base.hpd_pin); | |
377 | ||
7d2c24e8 JB |
378 | return ret; |
379 | } | |
380 | ||
79e53945 JB |
381 | /** |
382 | * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence. | |
383 | * | |
384 | * Not for i915G/i915GM | |
385 | * | |
386 | * \return true if CRT is connected. | |
387 | * \return false if CRT is disconnected. | |
388 | */ | |
389 | static bool intel_crt_detect_hotplug(struct drm_connector *connector) | |
390 | { | |
391 | struct drm_device *dev = connector->dev; | |
fac5e23e | 392 | struct drm_i915_private *dev_priv = to_i915(dev); |
0706f17c | 393 | u32 stat; |
7a772c49 | 394 | bool ret = false; |
771cb081 | 395 | int i, tries = 0; |
2c07245f | 396 | |
bad720ff | 397 | if (HAS_PCH_SPLIT(dev)) |
f2b115e6 | 398 | return intel_ironlake_crt_detect_hotplug(connector); |
2c07245f | 399 | |
7d2c24e8 JB |
400 | if (IS_VALLEYVIEW(dev)) |
401 | return valleyview_crt_detect_hotplug(connector); | |
402 | ||
771cb081 ZY |
403 | /* |
404 | * On 4 series desktop, CRT detect sequence need to be done twice | |
405 | * to get a reliable result. | |
406 | */ | |
79e53945 | 407 | |
771cb081 ZY |
408 | if (IS_G4X(dev) && !IS_GM45(dev)) |
409 | tries = 2; | |
410 | else | |
411 | tries = 1; | |
771cb081 | 412 | |
771cb081 | 413 | for (i = 0; i < tries ; i++) { |
771cb081 | 414 | /* turn on the FORCE_DETECT */ |
0706f17c EE |
415 | i915_hotplug_interrupt_update(dev_priv, |
416 | CRT_HOTPLUG_FORCE_DETECT, | |
417 | CRT_HOTPLUG_FORCE_DETECT); | |
771cb081 | 418 | /* wait for FORCE_DETECT to go off */ |
fd3790d4 CW |
419 | if (intel_wait_for_register(dev_priv, PORT_HOTPLUG_EN, |
420 | CRT_HOTPLUG_FORCE_DETECT, 0, | |
421 | 1000)) | |
79077319 | 422 | DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off"); |
771cb081 | 423 | } |
79e53945 | 424 | |
7a772c49 AJ |
425 | stat = I915_READ(PORT_HOTPLUG_STAT); |
426 | if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE) | |
427 | ret = true; | |
428 | ||
429 | /* clear the interrupt we just generated, if any */ | |
430 | I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS); | |
79e53945 | 431 | |
0706f17c | 432 | i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0); |
7a772c49 AJ |
433 | |
434 | return ret; | |
79e53945 JB |
435 | } |
436 | ||
f1a2f5b7 JN |
437 | static struct edid *intel_crt_get_edid(struct drm_connector *connector, |
438 | struct i2c_adapter *i2c) | |
439 | { | |
440 | struct edid *edid; | |
441 | ||
442 | edid = drm_get_edid(connector, i2c); | |
443 | ||
444 | if (!edid && !intel_gmbus_is_forced_bit(i2c)) { | |
445 | DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n"); | |
446 | intel_gmbus_force_bit(i2c, true); | |
447 | edid = drm_get_edid(connector, i2c); | |
448 | intel_gmbus_force_bit(i2c, false); | |
449 | } | |
450 | ||
451 | return edid; | |
452 | } | |
453 | ||
454 | /* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */ | |
455 | static int intel_crt_ddc_get_modes(struct drm_connector *connector, | |
456 | struct i2c_adapter *adapter) | |
457 | { | |
458 | struct edid *edid; | |
ebda95a9 | 459 | int ret; |
f1a2f5b7 JN |
460 | |
461 | edid = intel_crt_get_edid(connector, adapter); | |
462 | if (!edid) | |
463 | return 0; | |
464 | ||
ebda95a9 JN |
465 | ret = intel_connector_update_modes(connector, edid); |
466 | kfree(edid); | |
467 | ||
468 | return ret; | |
f1a2f5b7 JN |
469 | } |
470 | ||
f5afcd3d | 471 | static bool intel_crt_detect_ddc(struct drm_connector *connector) |
79e53945 | 472 | { |
f5afcd3d | 473 | struct intel_crt *crt = intel_attached_crt(connector); |
fac5e23e | 474 | struct drm_i915_private *dev_priv = to_i915(crt->base.base.dev); |
a2bd1f54 DV |
475 | struct edid *edid; |
476 | struct i2c_adapter *i2c; | |
79e53945 | 477 | |
a2bd1f54 | 478 | BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG); |
79e53945 | 479 | |
41aa3448 | 480 | i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin); |
f1a2f5b7 | 481 | edid = intel_crt_get_edid(connector, i2c); |
a2bd1f54 DV |
482 | |
483 | if (edid) { | |
484 | bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL; | |
f5afcd3d | 485 | |
f5afcd3d DM |
486 | /* |
487 | * This may be a DVI-I connector with a shared DDC | |
488 | * link between analog and digital outputs, so we | |
489 | * have to check the EDID input spec of the attached device. | |
490 | */ | |
f5afcd3d DM |
491 | if (!is_digital) { |
492 | DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n"); | |
493 | return true; | |
494 | } | |
a2bd1f54 DV |
495 | |
496 | DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n"); | |
497 | } else { | |
498 | DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n"); | |
6ec3d0c0 CW |
499 | } |
500 | ||
a2bd1f54 DV |
501 | kfree(edid); |
502 | ||
6ec3d0c0 | 503 | return false; |
79e53945 JB |
504 | } |
505 | ||
e4a5d54f | 506 | static enum drm_connector_status |
c8ecb2f1 | 507 | intel_crt_load_detect(struct intel_crt *crt, uint32_t pipe) |
e4a5d54f | 508 | { |
7173188d | 509 | struct drm_device *dev = crt->base.base.dev; |
fac5e23e | 510 | struct drm_i915_private *dev_priv = to_i915(dev); |
e4a5d54f ML |
511 | uint32_t save_bclrpat; |
512 | uint32_t save_vtotal; | |
513 | uint32_t vtotal, vactive; | |
514 | uint32_t vsample; | |
515 | uint32_t vblank, vblank_start, vblank_end; | |
516 | uint32_t dsl; | |
f0f59a00 VS |
517 | i915_reg_t bclrpat_reg, vtotal_reg, |
518 | vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg; | |
e4a5d54f ML |
519 | uint8_t st00; |
520 | enum drm_connector_status status; | |
521 | ||
6ec3d0c0 CW |
522 | DRM_DEBUG_KMS("starting load-detect on CRT\n"); |
523 | ||
9db4a9c7 JB |
524 | bclrpat_reg = BCLRPAT(pipe); |
525 | vtotal_reg = VTOTAL(pipe); | |
526 | vblank_reg = VBLANK(pipe); | |
527 | vsync_reg = VSYNC(pipe); | |
528 | pipeconf_reg = PIPECONF(pipe); | |
529 | pipe_dsl_reg = PIPEDSL(pipe); | |
e4a5d54f ML |
530 | |
531 | save_bclrpat = I915_READ(bclrpat_reg); | |
532 | save_vtotal = I915_READ(vtotal_reg); | |
533 | vblank = I915_READ(vblank_reg); | |
534 | ||
535 | vtotal = ((save_vtotal >> 16) & 0xfff) + 1; | |
536 | vactive = (save_vtotal & 0x7ff) + 1; | |
537 | ||
538 | vblank_start = (vblank & 0xfff) + 1; | |
539 | vblank_end = ((vblank >> 16) & 0xfff) + 1; | |
540 | ||
541 | /* Set the border color to purple. */ | |
542 | I915_WRITE(bclrpat_reg, 0x500050); | |
543 | ||
a6c45cf0 | 544 | if (!IS_GEN2(dev)) { |
e4a5d54f ML |
545 | uint32_t pipeconf = I915_READ(pipeconf_reg); |
546 | I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER); | |
19c55da1 | 547 | POSTING_READ(pipeconf_reg); |
e4a5d54f ML |
548 | /* Wait for next Vblank to substitue |
549 | * border color for Color info */ | |
9d0498a2 | 550 | intel_wait_for_vblank(dev, pipe); |
f0f59a00 | 551 | st00 = I915_READ8(_VGA_MSR_WRITE); |
e4a5d54f ML |
552 | status = ((st00 & (1 << 4)) != 0) ? |
553 | connector_status_connected : | |
554 | connector_status_disconnected; | |
555 | ||
556 | I915_WRITE(pipeconf_reg, pipeconf); | |
557 | } else { | |
558 | bool restore_vblank = false; | |
559 | int count, detect; | |
560 | ||
561 | /* | |
562 | * If there isn't any border, add some. | |
563 | * Yes, this will flicker | |
564 | */ | |
565 | if (vblank_start <= vactive && vblank_end >= vtotal) { | |
566 | uint32_t vsync = I915_READ(vsync_reg); | |
567 | uint32_t vsync_start = (vsync & 0xffff) + 1; | |
568 | ||
569 | vblank_start = vsync_start; | |
570 | I915_WRITE(vblank_reg, | |
571 | (vblank_start - 1) | | |
572 | ((vblank_end - 1) << 16)); | |
573 | restore_vblank = true; | |
574 | } | |
575 | /* sample in the vertical border, selecting the larger one */ | |
576 | if (vblank_start - vactive >= vtotal - vblank_end) | |
577 | vsample = (vblank_start + vactive) >> 1; | |
578 | else | |
579 | vsample = (vtotal + vblank_end) >> 1; | |
580 | ||
581 | /* | |
582 | * Wait for the border to be displayed | |
583 | */ | |
584 | while (I915_READ(pipe_dsl_reg) >= vactive) | |
585 | ; | |
586 | while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample) | |
587 | ; | |
588 | /* | |
589 | * Watch ST00 for an entire scanline | |
590 | */ | |
591 | detect = 0; | |
592 | count = 0; | |
593 | do { | |
594 | count++; | |
595 | /* Read the ST00 VGA status register */ | |
f0f59a00 | 596 | st00 = I915_READ8(_VGA_MSR_WRITE); |
e4a5d54f ML |
597 | if (st00 & (1 << 4)) |
598 | detect++; | |
599 | } while ((I915_READ(pipe_dsl_reg) == dsl)); | |
600 | ||
601 | /* restore vblank if necessary */ | |
602 | if (restore_vblank) | |
603 | I915_WRITE(vblank_reg, vblank); | |
604 | /* | |
605 | * If more than 3/4 of the scanline detected a monitor, | |
606 | * then it is assumed to be present. This works even on i830, | |
607 | * where there isn't any way to force the border color across | |
608 | * the screen | |
609 | */ | |
610 | status = detect * 4 > count * 3 ? | |
611 | connector_status_connected : | |
612 | connector_status_disconnected; | |
613 | } | |
614 | ||
615 | /* Restore previous settings */ | |
616 | I915_WRITE(bclrpat_reg, save_bclrpat); | |
617 | ||
618 | return status; | |
619 | } | |
620 | ||
7b334fcb | 621 | static enum drm_connector_status |
930a9e28 | 622 | intel_crt_detect(struct drm_connector *connector, bool force) |
79e53945 JB |
623 | { |
624 | struct drm_device *dev = connector->dev; | |
fac5e23e | 625 | struct drm_i915_private *dev_priv = to_i915(dev); |
c9a1c4cd | 626 | struct intel_crt *crt = intel_attached_crt(connector); |
671dedd2 ID |
627 | struct intel_encoder *intel_encoder = &crt->base; |
628 | enum intel_display_power_domain power_domain; | |
e4a5d54f | 629 | enum drm_connector_status status; |
e95c8438 | 630 | struct intel_load_detect_pipe tmp; |
51fd371b | 631 | struct drm_modeset_acquire_ctx ctx; |
79e53945 | 632 | |
164c8598 | 633 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n", |
c23cc417 | 634 | connector->base.id, connector->name, |
164c8598 CW |
635 | force); |
636 | ||
671dedd2 ID |
637 | power_domain = intel_display_port_power_domain(intel_encoder); |
638 | intel_display_power_get(dev_priv, power_domain); | |
639 | ||
a6c45cf0 | 640 | if (I915_HAS_HOTPLUG(dev)) { |
aaa37730 DV |
641 | /* We can not rely on the HPD pin always being correctly wired |
642 | * up, for example many KVM do not pass it through, and so | |
643 | * only trust an assertion that the monitor is connected. | |
644 | */ | |
6ec3d0c0 CW |
645 | if (intel_crt_detect_hotplug(connector)) { |
646 | DRM_DEBUG_KMS("CRT detected via hotplug\n"); | |
c19a0df2 PZ |
647 | status = connector_status_connected; |
648 | goto out; | |
aaa37730 | 649 | } else |
e7dbb2f2 | 650 | DRM_DEBUG_KMS("CRT not detected via hotplug\n"); |
79e53945 JB |
651 | } |
652 | ||
c19a0df2 PZ |
653 | if (intel_crt_detect_ddc(connector)) { |
654 | status = connector_status_connected; | |
655 | goto out; | |
656 | } | |
79e53945 | 657 | |
aaa37730 DV |
658 | /* Load detection is broken on HPD capable machines. Whoever wants a |
659 | * broken monitor (without edid) to work behind a broken kvm (that fails | |
660 | * to have the right resistors for HP detection) needs to fix this up. | |
661 | * For now just bail out. */ | |
5bedeb2d | 662 | if (I915_HAS_HOTPLUG(dev) && !i915.load_detect_test) { |
c19a0df2 PZ |
663 | status = connector_status_disconnected; |
664 | goto out; | |
665 | } | |
aaa37730 | 666 | |
c19a0df2 PZ |
667 | if (!force) { |
668 | status = connector->status; | |
669 | goto out; | |
670 | } | |
7b334fcb | 671 | |
208bf9fd VS |
672 | drm_modeset_acquire_init(&ctx, 0); |
673 | ||
e4a5d54f | 674 | /* for pre-945g platforms use load detect */ |
51fd371b | 675 | if (intel_get_load_detect_pipe(connector, NULL, &tmp, &ctx)) { |
e95c8438 DV |
676 | if (intel_crt_detect_ddc(connector)) |
677 | status = connector_status_connected; | |
5bedeb2d | 678 | else if (INTEL_INFO(dev)->gen < 4) |
c8ecb2f1 ML |
679 | status = intel_crt_load_detect(crt, |
680 | to_intel_crtc(connector->state->crtc)->pipe); | |
32fff610 ML |
681 | else if (i915.load_detect_test) |
682 | status = connector_status_disconnected; | |
5bedeb2d DV |
683 | else |
684 | status = connector_status_unknown; | |
49172fee | 685 | intel_release_load_detect_pipe(connector, &tmp, &ctx); |
e95c8438 DV |
686 | } else |
687 | status = connector_status_unknown; | |
e4a5d54f | 688 | |
208bf9fd VS |
689 | drm_modeset_drop_locks(&ctx); |
690 | drm_modeset_acquire_fini(&ctx); | |
691 | ||
c19a0df2 | 692 | out: |
671dedd2 | 693 | intel_display_power_put(dev_priv, power_domain); |
e4a5d54f | 694 | return status; |
79e53945 JB |
695 | } |
696 | ||
697 | static void intel_crt_destroy(struct drm_connector *connector) | |
698 | { | |
79e53945 JB |
699 | drm_connector_cleanup(connector); |
700 | kfree(connector); | |
701 | } | |
702 | ||
703 | static int intel_crt_get_modes(struct drm_connector *connector) | |
704 | { | |
8e4d36b9 | 705 | struct drm_device *dev = connector->dev; |
fac5e23e | 706 | struct drm_i915_private *dev_priv = to_i915(dev); |
671dedd2 ID |
707 | struct intel_crt *crt = intel_attached_crt(connector); |
708 | struct intel_encoder *intel_encoder = &crt->base; | |
709 | enum intel_display_power_domain power_domain; | |
890f3359 | 710 | int ret; |
3bd7d909 | 711 | struct i2c_adapter *i2c; |
8e4d36b9 | 712 | |
671dedd2 ID |
713 | power_domain = intel_display_port_power_domain(intel_encoder); |
714 | intel_display_power_get(dev_priv, power_domain); | |
715 | ||
41aa3448 | 716 | i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin); |
f1a2f5b7 | 717 | ret = intel_crt_ddc_get_modes(connector, i2c); |
8e4d36b9 | 718 | if (ret || !IS_G4X(dev)) |
671dedd2 | 719 | goto out; |
8e4d36b9 | 720 | |
8e4d36b9 | 721 | /* Try to probe digital port for output in DVI-I -> VGA mode. */ |
988c7015 | 722 | i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB); |
671dedd2 ID |
723 | ret = intel_crt_ddc_get_modes(connector, i2c); |
724 | ||
725 | out: | |
726 | intel_display_power_put(dev_priv, power_domain); | |
727 | ||
728 | return ret; | |
79e53945 JB |
729 | } |
730 | ||
731 | static int intel_crt_set_property(struct drm_connector *connector, | |
732 | struct drm_property *property, | |
733 | uint64_t value) | |
734 | { | |
79e53945 JB |
735 | return 0; |
736 | } | |
737 | ||
4c732e6e | 738 | void intel_crt_reset(struct drm_encoder *encoder) |
f3269058 | 739 | { |
4570d833 | 740 | struct drm_device *dev = encoder->dev; |
fac5e23e | 741 | struct drm_i915_private *dev_priv = to_i915(dev); |
4570d833 | 742 | struct intel_crt *crt = intel_encoder_to_crt(to_intel_encoder(encoder)); |
f3269058 | 743 | |
10603caa | 744 | if (INTEL_INFO(dev)->gen >= 5) { |
2e938892 DV |
745 | u32 adpa; |
746 | ||
ca54b810 | 747 | adpa = I915_READ(crt->adpa_reg); |
2e938892 DV |
748 | adpa &= ~ADPA_CRT_HOTPLUG_MASK; |
749 | adpa |= ADPA_HOTPLUG_BITS; | |
ca54b810 VS |
750 | I915_WRITE(crt->adpa_reg, adpa); |
751 | POSTING_READ(crt->adpa_reg); | |
2e938892 | 752 | |
0039a4b3 | 753 | DRM_DEBUG_KMS("crt adpa set to 0x%x\n", adpa); |
f3269058 | 754 | crt->force_hotplug_required = 1; |
2e938892 DV |
755 | } |
756 | ||
f3269058 CW |
757 | } |
758 | ||
79e53945 JB |
759 | /* |
760 | * Routines for controlling stuff on the analog port | |
761 | */ | |
762 | ||
79e53945 | 763 | static const struct drm_connector_funcs intel_crt_connector_funcs = { |
4d688a2a | 764 | .dpms = drm_atomic_helper_connector_dpms, |
79e53945 JB |
765 | .detect = intel_crt_detect, |
766 | .fill_modes = drm_helper_probe_single_connector_modes, | |
1ebaa0b9 | 767 | .late_register = intel_connector_register, |
c191eca1 | 768 | .early_unregister = intel_connector_unregister, |
79e53945 JB |
769 | .destroy = intel_crt_destroy, |
770 | .set_property = intel_crt_set_property, | |
c6f95f27 | 771 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
98969725 | 772 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
2545e4a6 | 773 | .atomic_get_property = intel_connector_atomic_get_property, |
79e53945 JB |
774 | }; |
775 | ||
776 | static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = { | |
777 | .mode_valid = intel_crt_mode_valid, | |
778 | .get_modes = intel_crt_get_modes, | |
79e53945 JB |
779 | }; |
780 | ||
79e53945 | 781 | static const struct drm_encoder_funcs intel_crt_enc_funcs = { |
4570d833 | 782 | .reset = intel_crt_reset, |
ea5b213a | 783 | .destroy = intel_encoder_destroy, |
79e53945 JB |
784 | }; |
785 | ||
bbe1c274 | 786 | static int intel_no_crt_dmi_callback(const struct dmi_system_id *id) |
8ca4013d | 787 | { |
bc0daf48 | 788 | DRM_INFO("Skipping CRT initialization for %s\n", id->ident); |
8ca4013d DL |
789 | return 1; |
790 | } | |
791 | ||
792 | static const struct dmi_system_id intel_no_crt[] = { | |
793 | { | |
794 | .callback = intel_no_crt_dmi_callback, | |
795 | .ident = "ACER ZGB", | |
796 | .matches = { | |
797 | DMI_MATCH(DMI_SYS_VENDOR, "ACER"), | |
798 | DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"), | |
799 | }, | |
800 | }, | |
10b6ee4a GC |
801 | { |
802 | .callback = intel_no_crt_dmi_callback, | |
803 | .ident = "DELL XPS 8700", | |
804 | .matches = { | |
805 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
806 | DMI_MATCH(DMI_PRODUCT_NAME, "XPS 8700"), | |
807 | }, | |
808 | }, | |
8ca4013d DL |
809 | { } |
810 | }; | |
811 | ||
79e53945 JB |
812 | void intel_crt_init(struct drm_device *dev) |
813 | { | |
814 | struct drm_connector *connector; | |
c9a1c4cd | 815 | struct intel_crt *crt; |
454c1ca8 | 816 | struct intel_connector *intel_connector; |
fac5e23e | 817 | struct drm_i915_private *dev_priv = to_i915(dev); |
6c03a6bd VS |
818 | i915_reg_t adpa_reg; |
819 | u32 adpa; | |
79e53945 | 820 | |
8ca4013d DL |
821 | /* Skip machines without VGA that falsely report hotplug events */ |
822 | if (dmi_check_system(intel_no_crt)) | |
823 | return; | |
824 | ||
6c03a6bd VS |
825 | if (HAS_PCH_SPLIT(dev)) |
826 | adpa_reg = PCH_ADPA; | |
827 | else if (IS_VALLEYVIEW(dev)) | |
828 | adpa_reg = VLV_ADPA; | |
829 | else | |
830 | adpa_reg = ADPA; | |
831 | ||
832 | adpa = I915_READ(adpa_reg); | |
833 | if ((adpa & ADPA_DAC_ENABLE) == 0) { | |
834 | /* | |
835 | * On some machines (some IVB at least) CRT can be | |
836 | * fused off, but there's no known fuse bit to | |
837 | * indicate that. On these machine the ADPA register | |
838 | * works normally, except the DAC enable bit won't | |
839 | * take. So the only way to tell is attempt to enable | |
840 | * it and see what happens. | |
841 | */ | |
842 | I915_WRITE(adpa_reg, adpa | ADPA_DAC_ENABLE | | |
843 | ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); | |
844 | if ((I915_READ(adpa_reg) & ADPA_DAC_ENABLE) == 0) | |
845 | return; | |
846 | I915_WRITE(adpa_reg, adpa); | |
847 | } | |
848 | ||
c9a1c4cd CW |
849 | crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL); |
850 | if (!crt) | |
79e53945 JB |
851 | return; |
852 | ||
9bdbd0b9 | 853 | intel_connector = intel_connector_alloc(); |
454c1ca8 | 854 | if (!intel_connector) { |
c9a1c4cd | 855 | kfree(crt); |
454c1ca8 ZW |
856 | return; |
857 | } | |
858 | ||
859 | connector = &intel_connector->base; | |
637f44d2 | 860 | crt->connector = intel_connector; |
454c1ca8 | 861 | drm_connector_init(dev, &intel_connector->base, |
79e53945 JB |
862 | &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); |
863 | ||
c9a1c4cd | 864 | drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs, |
580d8ed5 | 865 | DRM_MODE_ENCODER_DAC, "CRT"); |
79e53945 | 866 | |
c9a1c4cd | 867 | intel_connector_attach_encoder(intel_connector, &crt->base); |
79e53945 | 868 | |
c9a1c4cd | 869 | crt->base.type = INTEL_OUTPUT_ANALOG; |
301ea74a | 870 | crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI); |
d63fa0dc | 871 | if (IS_I830(dev)) |
59c859d6 ED |
872 | crt->base.crtc_mask = (1 << 0); |
873 | else | |
0826874a | 874 | crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2); |
59c859d6 | 875 | |
dbb02575 DV |
876 | if (IS_GEN2(dev)) |
877 | connector->interlace_allowed = 0; | |
878 | else | |
879 | connector->interlace_allowed = 1; | |
79e53945 JB |
880 | connector->doublescan_allowed = 0; |
881 | ||
6c03a6bd | 882 | crt->adpa_reg = adpa_reg; |
540a8950 | 883 | |
5bfe2ac0 | 884 | crt->base.compute_config = intel_crt_compute_config; |
92966a37 | 885 | if (HAS_PCH_SPLIT(dev)) { |
1ea56e26 VS |
886 | crt->base.disable = pch_disable_crt; |
887 | crt->base.post_disable = pch_post_disable_crt; | |
888 | } else { | |
889 | crt->base.disable = intel_disable_crt; | |
890 | } | |
2124604b | 891 | crt->base.enable = intel_enable_crt; |
1d843f9d EE |
892 | if (I915_HAS_HOTPLUG(dev)) |
893 | crt->base.hpd_pin = HPD_CRT; | |
a2985791 VS |
894 | if (HAS_DDI(dev)) { |
895 | crt->base.get_config = hsw_crt_get_config; | |
4eda01b2 | 896 | crt->base.get_hw_state = intel_ddi_get_hw_state; |
a2985791 VS |
897 | } else { |
898 | crt->base.get_config = intel_crt_get_config; | |
4eda01b2 | 899 | crt->base.get_hw_state = intel_crt_get_hw_state; |
a2985791 | 900 | } |
e403fc94 | 901 | intel_connector->get_hw_state = intel_connector_get_hw_state; |
df0323c4 | 902 | |
79e53945 JB |
903 | drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs); |
904 | ||
821450c6 EE |
905 | if (!I915_HAS_HOTPLUG(dev)) |
906 | intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT; | |
eb1f8e4f | 907 | |
e7dbb2f2 KP |
908 | /* |
909 | * Configure the automatic hotplug detection stuff | |
910 | */ | |
911 | crt->force_hotplug_required = 0; | |
e7dbb2f2 | 912 | |
68d18ad7 | 913 | /* |
3e68320e DL |
914 | * TODO: find a proper way to discover whether we need to set the the |
915 | * polarity and link reversal bits or not, instead of relying on the | |
916 | * BIOS. | |
68d18ad7 | 917 | */ |
3e68320e DL |
918 | if (HAS_PCH_LPT(dev)) { |
919 | u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT | | |
920 | FDI_RX_LINK_REVERSAL_OVERRIDE; | |
921 | ||
eede3b53 | 922 | dev_priv->fdi_rx_config = I915_READ(FDI_RX_CTL(PIPE_A)) & fdi_config; |
3e68320e | 923 | } |
754970ee | 924 | |
4570d833 | 925 | intel_crt_reset(&crt->base.base); |
79e53945 | 926 | } |