]>
Commit | Line | Data |
---|---|---|
79e53945 JB |
1 | /* |
2 | * Copyright © 2006-2007 Intel Corporation | |
3 | * Copyright (c) 2006 Dave Airlie <airlied@linux.ie> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the next | |
13 | * paragraph) shall be included in all copies or substantial portions of the | |
14 | * Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
22 | * DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | * Authors: | |
25 | * Eric Anholt <eric@anholt.net> | |
26 | * Dave Airlie <airlied@linux.ie> | |
27 | * Jesse Barnes <jesse.barnes@intel.com> | |
28 | */ | |
29 | ||
565dcd46 | 30 | #include <linux/dmi.h> |
79e53945 JB |
31 | #include <linux/i2c.h> |
32 | #include "drmP.h" | |
33 | #include "drm.h" | |
34 | #include "drm_crtc.h" | |
35 | #include "drm_edid.h" | |
36 | #include "intel_drv.h" | |
37 | #include "i915_drm.h" | |
38 | #include "i915_drv.h" | |
39 | ||
40 | /** | |
41 | * Sets the backlight level. | |
42 | * | |
43 | * \param level backlight level, from 0 to intel_lvds_get_max_backlight(). | |
44 | */ | |
45 | static void intel_lvds_set_backlight(struct drm_device *dev, int level) | |
46 | { | |
47 | struct drm_i915_private *dev_priv = dev->dev_private; | |
48 | u32 blc_pwm_ctl; | |
49 | ||
50 | blc_pwm_ctl = I915_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK; | |
51 | I915_WRITE(BLC_PWM_CTL, (blc_pwm_ctl | | |
52 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); | |
53 | } | |
54 | ||
55 | /** | |
56 | * Returns the maximum level of the backlight duty cycle field. | |
57 | */ | |
58 | static u32 intel_lvds_get_max_backlight(struct drm_device *dev) | |
59 | { | |
60 | struct drm_i915_private *dev_priv = dev->dev_private; | |
61 | ||
62 | return ((I915_READ(BLC_PWM_CTL) & BACKLIGHT_MODULATION_FREQ_MASK) >> | |
63 | BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; | |
64 | } | |
65 | ||
66 | /** | |
67 | * Sets the power state for the panel. | |
68 | */ | |
69 | static void intel_lvds_set_power(struct drm_device *dev, bool on) | |
70 | { | |
71 | struct drm_i915_private *dev_priv = dev->dev_private; | |
72 | u32 pp_status; | |
73 | ||
74 | if (on) { | |
75 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | | |
76 | POWER_TARGET_ON); | |
77 | do { | |
78 | pp_status = I915_READ(PP_STATUS); | |
79 | } while ((pp_status & PP_ON) == 0); | |
80 | ||
81 | intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle); | |
82 | } else { | |
83 | intel_lvds_set_backlight(dev, 0); | |
84 | ||
85 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & | |
86 | ~POWER_TARGET_ON); | |
87 | do { | |
88 | pp_status = I915_READ(PP_STATUS); | |
89 | } while (pp_status & PP_ON); | |
90 | } | |
91 | } | |
92 | ||
93 | static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) | |
94 | { | |
95 | struct drm_device *dev = encoder->dev; | |
96 | ||
97 | if (mode == DRM_MODE_DPMS_ON) | |
98 | intel_lvds_set_power(dev, true); | |
99 | else | |
100 | intel_lvds_set_power(dev, false); | |
101 | ||
102 | /* XXX: We never power down the LVDS pairs. */ | |
103 | } | |
104 | ||
105 | static void intel_lvds_save(struct drm_connector *connector) | |
106 | { | |
107 | struct drm_device *dev = connector->dev; | |
108 | struct drm_i915_private *dev_priv = dev->dev_private; | |
109 | ||
110 | dev_priv->savePP_ON = I915_READ(PP_ON_DELAYS); | |
111 | dev_priv->savePP_OFF = I915_READ(PP_OFF_DELAYS); | |
112 | dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL); | |
113 | dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR); | |
114 | dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); | |
115 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & | |
116 | BACKLIGHT_DUTY_CYCLE_MASK); | |
117 | ||
118 | /* | |
119 | * If the light is off at server startup, just make it full brightness | |
120 | */ | |
121 | if (dev_priv->backlight_duty_cycle == 0) | |
122 | dev_priv->backlight_duty_cycle = | |
123 | intel_lvds_get_max_backlight(dev); | |
124 | } | |
125 | ||
126 | static void intel_lvds_restore(struct drm_connector *connector) | |
127 | { | |
128 | struct drm_device *dev = connector->dev; | |
129 | struct drm_i915_private *dev_priv = dev->dev_private; | |
130 | ||
131 | I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL); | |
132 | I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON); | |
133 | I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF); | |
134 | I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR); | |
135 | I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL); | |
136 | if (dev_priv->savePP_CONTROL & POWER_TARGET_ON) | |
137 | intel_lvds_set_power(dev, true); | |
138 | else | |
139 | intel_lvds_set_power(dev, false); | |
140 | } | |
141 | ||
142 | static int intel_lvds_mode_valid(struct drm_connector *connector, | |
143 | struct drm_display_mode *mode) | |
144 | { | |
145 | struct drm_device *dev = connector->dev; | |
146 | struct drm_i915_private *dev_priv = dev->dev_private; | |
147 | struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode; | |
148 | ||
149 | if (fixed_mode) { | |
150 | if (mode->hdisplay > fixed_mode->hdisplay) | |
151 | return MODE_PANEL; | |
152 | if (mode->vdisplay > fixed_mode->vdisplay) | |
153 | return MODE_PANEL; | |
154 | } | |
155 | ||
156 | return MODE_OK; | |
157 | } | |
158 | ||
159 | static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, | |
160 | struct drm_display_mode *mode, | |
161 | struct drm_display_mode *adjusted_mode) | |
162 | { | |
163 | struct drm_device *dev = encoder->dev; | |
164 | struct drm_i915_private *dev_priv = dev->dev_private; | |
165 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
166 | struct drm_encoder *tmp_encoder; | |
167 | ||
168 | /* Should never happen!! */ | |
169 | if (!IS_I965G(dev) && intel_crtc->pipe == 0) { | |
170 | printk(KERN_ERR "Can't support LVDS on pipe A\n"); | |
171 | return false; | |
172 | } | |
173 | ||
174 | /* Should never happen!! */ | |
175 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { | |
176 | if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { | |
177 | printk(KERN_ERR "Can't enable LVDS and another " | |
178 | "encoder on the same pipe\n"); | |
179 | return false; | |
180 | } | |
181 | } | |
182 | ||
183 | /* | |
184 | * If we have timings from the BIOS for the panel, put them in | |
185 | * to the adjusted mode. The CRTC will be set up for this mode, | |
186 | * with the panel scaling set up to source from the H/VDisplay | |
187 | * of the original mode. | |
188 | */ | |
189 | if (dev_priv->panel_fixed_mode != NULL) { | |
190 | adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay; | |
191 | adjusted_mode->hsync_start = | |
192 | dev_priv->panel_fixed_mode->hsync_start; | |
193 | adjusted_mode->hsync_end = | |
194 | dev_priv->panel_fixed_mode->hsync_end; | |
195 | adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal; | |
196 | adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay; | |
197 | adjusted_mode->vsync_start = | |
198 | dev_priv->panel_fixed_mode->vsync_start; | |
199 | adjusted_mode->vsync_end = | |
200 | dev_priv->panel_fixed_mode->vsync_end; | |
201 | adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal; | |
202 | adjusted_mode->clock = dev_priv->panel_fixed_mode->clock; | |
203 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
204 | } | |
205 | ||
206 | /* | |
207 | * XXX: It would be nice to support lower refresh rates on the | |
208 | * panels to reduce power consumption, and perhaps match the | |
209 | * user's requested refresh rate. | |
210 | */ | |
211 | ||
212 | return true; | |
213 | } | |
214 | ||
215 | static void intel_lvds_prepare(struct drm_encoder *encoder) | |
216 | { | |
217 | struct drm_device *dev = encoder->dev; | |
218 | struct drm_i915_private *dev_priv = dev->dev_private; | |
219 | ||
220 | dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); | |
221 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & | |
222 | BACKLIGHT_DUTY_CYCLE_MASK); | |
223 | ||
224 | intel_lvds_set_power(dev, false); | |
225 | } | |
226 | ||
227 | static void intel_lvds_commit( struct drm_encoder *encoder) | |
228 | { | |
229 | struct drm_device *dev = encoder->dev; | |
230 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231 | ||
232 | if (dev_priv->backlight_duty_cycle == 0) | |
233 | dev_priv->backlight_duty_cycle = | |
234 | intel_lvds_get_max_backlight(dev); | |
235 | ||
236 | intel_lvds_set_power(dev, true); | |
237 | } | |
238 | ||
239 | static void intel_lvds_mode_set(struct drm_encoder *encoder, | |
240 | struct drm_display_mode *mode, | |
241 | struct drm_display_mode *adjusted_mode) | |
242 | { | |
243 | struct drm_device *dev = encoder->dev; | |
244 | struct drm_i915_private *dev_priv = dev->dev_private; | |
245 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
246 | u32 pfit_control; | |
247 | ||
248 | /* | |
249 | * The LVDS pin pair will already have been turned on in the | |
250 | * intel_crtc_mode_set since it has a large impact on the DPLL | |
251 | * settings. | |
252 | */ | |
253 | ||
254 | /* | |
255 | * Enable automatic panel scaling so that non-native modes fill the | |
256 | * screen. Should be enabled before the pipe is enabled, according to | |
257 | * register description and PRM. | |
258 | */ | |
259 | if (mode->hdisplay != adjusted_mode->hdisplay || | |
260 | mode->vdisplay != adjusted_mode->vdisplay) | |
261 | pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE | | |
262 | HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | | |
263 | HORIZ_INTERP_BILINEAR); | |
264 | else | |
265 | pfit_control = 0; | |
266 | ||
267 | if (!IS_I965G(dev)) { | |
2b5cde2b | 268 | if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) |
79e53945 JB |
269 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; |
270 | } | |
271 | else | |
272 | pfit_control |= intel_crtc->pipe << PFIT_PIPE_SHIFT; | |
273 | ||
274 | I915_WRITE(PFIT_CONTROL, pfit_control); | |
275 | } | |
276 | ||
277 | /** | |
278 | * Detect the LVDS connection. | |
279 | * | |
280 | * This always returns CONNECTOR_STATUS_CONNECTED. This connector should only have | |
281 | * been set up if the LVDS was actually connected anyway. | |
282 | */ | |
283 | static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) | |
284 | { | |
285 | return connector_status_connected; | |
286 | } | |
287 | ||
288 | /** | |
289 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. | |
290 | */ | |
291 | static int intel_lvds_get_modes(struct drm_connector *connector) | |
292 | { | |
293 | struct drm_device *dev = connector->dev; | |
294 | struct intel_output *intel_output = to_intel_output(connector); | |
295 | struct drm_i915_private *dev_priv = dev->dev_private; | |
296 | int ret = 0; | |
297 | ||
298 | ret = intel_ddc_get_modes(intel_output); | |
299 | ||
300 | if (ret) | |
301 | return ret; | |
302 | ||
303 | /* Didn't get an EDID, so | |
304 | * Set wide sync ranges so we get all modes | |
305 | * handed to valid_mode for checking | |
306 | */ | |
307 | connector->display_info.min_vfreq = 0; | |
308 | connector->display_info.max_vfreq = 200; | |
309 | connector->display_info.min_hfreq = 0; | |
310 | connector->display_info.max_hfreq = 200; | |
311 | ||
312 | if (dev_priv->panel_fixed_mode != NULL) { | |
313 | struct drm_display_mode *mode; | |
314 | ||
79e53945 JB |
315 | mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); |
316 | drm_mode_probed_add(connector, mode); | |
79e53945 JB |
317 | |
318 | return 1; | |
319 | } | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | /** | |
325 | * intel_lvds_destroy - unregister and free LVDS structures | |
326 | * @connector: connector to free | |
327 | * | |
328 | * Unregister the DDC bus for this connector then free the driver private | |
329 | * structure. | |
330 | */ | |
331 | static void intel_lvds_destroy(struct drm_connector *connector) | |
332 | { | |
333 | struct intel_output *intel_output = to_intel_output(connector); | |
334 | ||
335 | if (intel_output->ddc_bus) | |
336 | intel_i2c_destroy(intel_output->ddc_bus); | |
337 | drm_sysfs_connector_remove(connector); | |
338 | drm_connector_cleanup(connector); | |
339 | kfree(connector); | |
340 | } | |
341 | ||
335041ed JB |
342 | static int intel_lvds_set_property(struct drm_connector *connector, |
343 | struct drm_property *property, | |
344 | uint64_t value) | |
345 | { | |
346 | struct drm_device *dev = connector->dev; | |
347 | ||
348 | if (property == dev->mode_config.dpms_property && connector->encoder) | |
349 | intel_lvds_dpms(connector->encoder, (uint32_t)(value & 0xf)); | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
79e53945 JB |
354 | static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
355 | .dpms = intel_lvds_dpms, | |
356 | .mode_fixup = intel_lvds_mode_fixup, | |
357 | .prepare = intel_lvds_prepare, | |
358 | .mode_set = intel_lvds_mode_set, | |
359 | .commit = intel_lvds_commit, | |
360 | }; | |
361 | ||
362 | static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { | |
363 | .get_modes = intel_lvds_get_modes, | |
364 | .mode_valid = intel_lvds_mode_valid, | |
365 | .best_encoder = intel_best_encoder, | |
366 | }; | |
367 | ||
368 | static const struct drm_connector_funcs intel_lvds_connector_funcs = { | |
369 | .save = intel_lvds_save, | |
370 | .restore = intel_lvds_restore, | |
371 | .detect = intel_lvds_detect, | |
372 | .fill_modes = drm_helper_probe_single_connector_modes, | |
335041ed | 373 | .set_property = intel_lvds_set_property, |
79e53945 JB |
374 | .destroy = intel_lvds_destroy, |
375 | }; | |
376 | ||
377 | ||
378 | static void intel_lvds_enc_destroy(struct drm_encoder *encoder) | |
379 | { | |
380 | drm_encoder_cleanup(encoder); | |
381 | } | |
382 | ||
383 | static const struct drm_encoder_funcs intel_lvds_enc_funcs = { | |
384 | .destroy = intel_lvds_enc_destroy, | |
385 | }; | |
386 | ||
425d244c JW |
387 | static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
388 | { | |
389 | DRM_DEBUG("Skipping LVDS initialization for %s\n", id->ident); | |
390 | return 1; | |
391 | } | |
79e53945 | 392 | |
425d244c JW |
393 | /* These systems claim to have LVDS, but really don't */ |
394 | static const struct dmi_system_id __initdata intel_no_lvds[] = { | |
395 | { | |
396 | .callback = intel_no_lvds_dmi_callback, | |
397 | .ident = "Apple Mac Mini (Core series)", | |
398 | .matches = { | |
399 | DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), | |
400 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), | |
401 | }, | |
402 | }, | |
403 | { | |
404 | .callback = intel_no_lvds_dmi_callback, | |
405 | .ident = "Apple Mac Mini (Core 2 series)", | |
406 | .matches = { | |
407 | DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), | |
408 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), | |
409 | }, | |
410 | }, | |
411 | { | |
412 | .callback = intel_no_lvds_dmi_callback, | |
413 | .ident = "MSI IM-945GSE-A", | |
414 | .matches = { | |
415 | DMI_MATCH(DMI_SYS_VENDOR, "MSI"), | |
416 | DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), | |
417 | }, | |
418 | }, | |
419 | { | |
420 | .callback = intel_no_lvds_dmi_callback, | |
421 | .ident = "Dell Studio Hybrid", | |
422 | .matches = { | |
423 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
424 | DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), | |
425 | }, | |
426 | }, | |
427 | ||
428 | /* FIXME: add a check for the Aopen Mini PC */ | |
429 | ||
430 | { } /* terminating entry */ | |
431 | }; | |
79e53945 JB |
432 | |
433 | /** | |
434 | * intel_lvds_init - setup LVDS connectors on this device | |
435 | * @dev: drm device | |
436 | * | |
437 | * Create the connector, register the LVDS DDC bus, and try to figure out what | |
438 | * modes we can display on the LVDS panel (if present). | |
439 | */ | |
440 | void intel_lvds_init(struct drm_device *dev) | |
441 | { | |
442 | struct drm_i915_private *dev_priv = dev->dev_private; | |
443 | struct intel_output *intel_output; | |
444 | struct drm_connector *connector; | |
445 | struct drm_encoder *encoder; | |
446 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ | |
447 | struct drm_crtc *crtc; | |
448 | u32 lvds; | |
449 | int pipe; | |
450 | ||
425d244c JW |
451 | /* Skip init on machines we know falsely report LVDS */ |
452 | if (dmi_check_system(intel_no_lvds)) | |
565dcd46 | 453 | return; |
565dcd46 | 454 | |
79e53945 JB |
455 | intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); |
456 | if (!intel_output) { | |
457 | return; | |
458 | } | |
459 | ||
460 | connector = &intel_output->base; | |
461 | encoder = &intel_output->enc; | |
462 | drm_connector_init(dev, &intel_output->base, &intel_lvds_connector_funcs, | |
463 | DRM_MODE_CONNECTOR_LVDS); | |
464 | ||
465 | drm_encoder_init(dev, &intel_output->enc, &intel_lvds_enc_funcs, | |
466 | DRM_MODE_ENCODER_LVDS); | |
467 | ||
468 | drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc); | |
469 | intel_output->type = INTEL_OUTPUT_LVDS; | |
470 | ||
471 | drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); | |
472 | drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); | |
473 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
474 | connector->interlace_allowed = false; | |
475 | connector->doublescan_allowed = false; | |
476 | ||
477 | ||
478 | /* | |
479 | * LVDS discovery: | |
480 | * 1) check for EDID on DDC | |
481 | * 2) check for VBT data | |
482 | * 3) check to see if LVDS is already on | |
483 | * if none of the above, no panel | |
484 | * 4) make sure lid is open | |
485 | * if closed, act like it's not there for now | |
486 | */ | |
487 | ||
488 | /* Set up the DDC bus. */ | |
489 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOC, "LVDSDDC_C"); | |
490 | if (!intel_output->ddc_bus) { | |
491 | dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " | |
492 | "failed.\n"); | |
493 | goto failed; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Attempt to get the fixed panel mode from DDC. Assume that the | |
498 | * preferred mode is the right one. | |
499 | */ | |
500 | intel_ddc_get_modes(intel_output); | |
501 | ||
502 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
503 | mutex_lock(&dev->mode_config.mutex); | |
504 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { | |
505 | dev_priv->panel_fixed_mode = | |
506 | drm_mode_duplicate(dev, scan); | |
507 | mutex_unlock(&dev->mode_config.mutex); | |
565dcd46 | 508 | goto out; |
79e53945 JB |
509 | } |
510 | mutex_unlock(&dev->mode_config.mutex); | |
511 | } | |
512 | ||
513 | /* Failed to get EDID, what about VBT? */ | |
88631706 | 514 | if (dev_priv->lfp_lvds_vbt_mode) { |
79e53945 JB |
515 | mutex_lock(&dev->mode_config.mutex); |
516 | dev_priv->panel_fixed_mode = | |
88631706 | 517 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
79e53945 | 518 | mutex_unlock(&dev->mode_config.mutex); |
e285f3cd JB |
519 | if (dev_priv->panel_fixed_mode) { |
520 | dev_priv->panel_fixed_mode->type |= | |
521 | DRM_MODE_TYPE_PREFERRED; | |
e285f3cd JB |
522 | goto out; |
523 | } | |
79e53945 JB |
524 | } |
525 | ||
526 | /* | |
527 | * If we didn't get EDID, try checking if the panel is already turned | |
528 | * on. If so, assume that whatever is currently programmed is the | |
529 | * correct mode. | |
530 | */ | |
531 | lvds = I915_READ(LVDS); | |
532 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; | |
533 | crtc = intel_get_crtc_from_pipe(dev, pipe); | |
534 | ||
535 | if (crtc && (lvds & LVDS_PORT_EN)) { | |
536 | dev_priv->panel_fixed_mode = intel_crtc_mode_get(dev, crtc); | |
537 | if (dev_priv->panel_fixed_mode) { | |
538 | dev_priv->panel_fixed_mode->type |= | |
539 | DRM_MODE_TYPE_PREFERRED; | |
565dcd46 | 540 | goto out; |
79e53945 JB |
541 | } |
542 | } | |
543 | ||
544 | /* If we still don't have a mode after all that, give up. */ | |
545 | if (!dev_priv->panel_fixed_mode) | |
546 | goto failed; | |
547 | ||
79e53945 JB |
548 | out: |
549 | drm_sysfs_connector_add(connector); | |
550 | return; | |
551 | ||
552 | failed: | |
553 | DRM_DEBUG("No LVDS modes found, disabling.\n"); | |
554 | if (intel_output->ddc_bus) | |
555 | intel_i2c_destroy(intel_output->ddc_bus); | |
556 | drm_connector_cleanup(connector); | |
557 | kfree(connector); | |
558 | } |