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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 | ||
c1c7af60 | 30 | #include <acpi/button.h> |
565dcd46 | 31 | #include <linux/dmi.h> |
79e53945 | 32 | #include <linux/i2c.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
79e53945 JB |
34 | #include "drmP.h" |
35 | #include "drm.h" | |
36 | #include "drm_crtc.h" | |
37 | #include "drm_edid.h" | |
38 | #include "intel_drv.h" | |
39 | #include "i915_drm.h" | |
40 | #include "i915_drv.h" | |
e99da35f | 41 | #include <linux/acpi.h> |
79e53945 | 42 | |
3fbe18d6 | 43 | /* Private structure for the integrated LVDS support */ |
ea5b213a CW |
44 | struct intel_lvds { |
45 | struct intel_encoder base; | |
788319d4 | 46 | |
219adae1 | 47 | struct edid *edid; |
788319d4 | 48 | |
3fbe18d6 ZY |
49 | int fitting_mode; |
50 | u32 pfit_control; | |
51 | u32 pfit_pgm_ratios; | |
e9e331a8 | 52 | bool pfit_dirty; |
788319d4 CW |
53 | |
54 | struct drm_display_mode *fixed_mode; | |
3fbe18d6 ZY |
55 | }; |
56 | ||
788319d4 | 57 | static struct intel_lvds *to_intel_lvds(struct drm_encoder *encoder) |
ea5b213a | 58 | { |
4ef69c7a | 59 | return container_of(encoder, struct intel_lvds, base.base); |
ea5b213a CW |
60 | } |
61 | ||
788319d4 CW |
62 | static struct intel_lvds *intel_attached_lvds(struct drm_connector *connector) |
63 | { | |
64 | return container_of(intel_attached_encoder(connector), | |
65 | struct intel_lvds, base); | |
66 | } | |
67 | ||
79e53945 JB |
68 | /** |
69 | * Sets the power state for the panel. | |
70 | */ | |
2a1292fd | 71 | static void intel_lvds_enable(struct intel_lvds *intel_lvds) |
79e53945 | 72 | { |
e9e331a8 | 73 | struct drm_device *dev = intel_lvds->base.base.dev; |
79e53945 | 74 | struct drm_i915_private *dev_priv = dev->dev_private; |
e9e331a8 | 75 | u32 ctl_reg, lvds_reg; |
541998a1 | 76 | |
c619eed4 | 77 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 | 78 | ctl_reg = PCH_PP_CONTROL; |
469d1296 | 79 | lvds_reg = PCH_LVDS; |
541998a1 ZW |
80 | } else { |
81 | ctl_reg = PP_CONTROL; | |
469d1296 | 82 | lvds_reg = LVDS; |
541998a1 | 83 | } |
79e53945 | 84 | |
2a1292fd | 85 | I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN); |
e9e331a8 | 86 | |
2a1292fd CW |
87 | if (intel_lvds->pfit_dirty) { |
88 | /* | |
89 | * Enable automatic panel scaling so that non-native modes | |
90 | * fill the screen. The panel fitter should only be | |
91 | * adjusted whilst the pipe is disabled, according to | |
92 | * register description and PRM. | |
93 | */ | |
94 | DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n", | |
95 | intel_lvds->pfit_control, | |
96 | intel_lvds->pfit_pgm_ratios); | |
97 | if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) { | |
98 | DRM_ERROR("timed out waiting for panel to power off\n"); | |
99 | } else { | |
100 | I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios); | |
101 | I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control); | |
4fd21dc8 | 102 | intel_lvds->pfit_dirty = false; |
e9e331a8 | 103 | } |
2a1292fd CW |
104 | } |
105 | ||
106 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON); | |
107 | POSTING_READ(lvds_reg); | |
108 | ||
109 | intel_panel_set_backlight(dev, dev_priv->backlight_level); | |
110 | } | |
111 | ||
112 | static void intel_lvds_disable(struct intel_lvds *intel_lvds) | |
113 | { | |
114 | struct drm_device *dev = intel_lvds->base.base.dev; | |
115 | struct drm_i915_private *dev_priv = dev->dev_private; | |
116 | u32 ctl_reg, lvds_reg; | |
117 | ||
118 | if (HAS_PCH_SPLIT(dev)) { | |
119 | ctl_reg = PCH_PP_CONTROL; | |
120 | lvds_reg = PCH_LVDS; | |
121 | } else { | |
122 | ctl_reg = PP_CONTROL; | |
123 | lvds_reg = LVDS; | |
124 | } | |
125 | ||
126 | dev_priv->backlight_level = intel_panel_get_backlight(dev); | |
127 | intel_panel_set_backlight(dev, 0); | |
128 | ||
129 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON); | |
130 | ||
131 | if (intel_lvds->pfit_control) { | |
132 | if (wait_for((I915_READ(PP_STATUS) & PP_ON) == 0, 1000)) | |
133 | DRM_ERROR("timed out waiting for panel to power off\n"); | |
e9e331a8 | 134 | |
2a1292fd CW |
135 | I915_WRITE(PFIT_CONTROL, 0); |
136 | intel_lvds->pfit_dirty = true; | |
79e53945 | 137 | } |
2a1292fd CW |
138 | |
139 | I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN); | |
c9f9ccc1 | 140 | POSTING_READ(lvds_reg); |
79e53945 JB |
141 | } |
142 | ||
143 | static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) | |
144 | { | |
788319d4 | 145 | struct intel_lvds *intel_lvds = to_intel_lvds(encoder); |
79e53945 JB |
146 | |
147 | if (mode == DRM_MODE_DPMS_ON) | |
2a1292fd | 148 | intel_lvds_enable(intel_lvds); |
79e53945 | 149 | else |
2a1292fd | 150 | intel_lvds_disable(intel_lvds); |
79e53945 JB |
151 | |
152 | /* XXX: We never power down the LVDS pairs. */ | |
153 | } | |
154 | ||
79e53945 JB |
155 | static int intel_lvds_mode_valid(struct drm_connector *connector, |
156 | struct drm_display_mode *mode) | |
157 | { | |
788319d4 CW |
158 | struct intel_lvds *intel_lvds = intel_attached_lvds(connector); |
159 | struct drm_display_mode *fixed_mode = intel_lvds->fixed_mode; | |
79e53945 | 160 | |
788319d4 CW |
161 | if (mode->hdisplay > fixed_mode->hdisplay) |
162 | return MODE_PANEL; | |
163 | if (mode->vdisplay > fixed_mode->vdisplay) | |
164 | return MODE_PANEL; | |
79e53945 JB |
165 | |
166 | return MODE_OK; | |
167 | } | |
168 | ||
49be663f CW |
169 | static void |
170 | centre_horizontally(struct drm_display_mode *mode, | |
171 | int width) | |
172 | { | |
173 | u32 border, sync_pos, blank_width, sync_width; | |
174 | ||
175 | /* keep the hsync and hblank widths constant */ | |
176 | sync_width = mode->crtc_hsync_end - mode->crtc_hsync_start; | |
177 | blank_width = mode->crtc_hblank_end - mode->crtc_hblank_start; | |
178 | sync_pos = (blank_width - sync_width + 1) / 2; | |
179 | ||
180 | border = (mode->hdisplay - width + 1) / 2; | |
181 | border += border & 1; /* make the border even */ | |
182 | ||
183 | mode->crtc_hdisplay = width; | |
184 | mode->crtc_hblank_start = width + border; | |
185 | mode->crtc_hblank_end = mode->crtc_hblank_start + blank_width; | |
186 | ||
187 | mode->crtc_hsync_start = mode->crtc_hblank_start + sync_pos; | |
188 | mode->crtc_hsync_end = mode->crtc_hsync_start + sync_width; | |
189 | } | |
190 | ||
191 | static void | |
192 | centre_vertically(struct drm_display_mode *mode, | |
193 | int height) | |
194 | { | |
195 | u32 border, sync_pos, blank_width, sync_width; | |
196 | ||
197 | /* keep the vsync and vblank widths constant */ | |
198 | sync_width = mode->crtc_vsync_end - mode->crtc_vsync_start; | |
199 | blank_width = mode->crtc_vblank_end - mode->crtc_vblank_start; | |
200 | sync_pos = (blank_width - sync_width + 1) / 2; | |
201 | ||
202 | border = (mode->vdisplay - height + 1) / 2; | |
203 | ||
204 | mode->crtc_vdisplay = height; | |
205 | mode->crtc_vblank_start = height + border; | |
206 | mode->crtc_vblank_end = mode->crtc_vblank_start + blank_width; | |
207 | ||
208 | mode->crtc_vsync_start = mode->crtc_vblank_start + sync_pos; | |
209 | mode->crtc_vsync_end = mode->crtc_vsync_start + sync_width; | |
210 | } | |
211 | ||
212 | static inline u32 panel_fitter_scaling(u32 source, u32 target) | |
213 | { | |
214 | /* | |
215 | * Floating point operation is not supported. So the FACTOR | |
216 | * is defined, which can avoid the floating point computation | |
217 | * when calculating the panel ratio. | |
218 | */ | |
219 | #define ACCURACY 12 | |
220 | #define FACTOR (1 << ACCURACY) | |
221 | u32 ratio = source * FACTOR / target; | |
222 | return (FACTOR * ratio + FACTOR/2) / FACTOR; | |
223 | } | |
224 | ||
79e53945 JB |
225 | static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, |
226 | struct drm_display_mode *mode, | |
227 | struct drm_display_mode *adjusted_mode) | |
228 | { | |
229 | struct drm_device *dev = encoder->dev; | |
230 | struct drm_i915_private *dev_priv = dev->dev_private; | |
231 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
788319d4 | 232 | struct intel_lvds *intel_lvds = to_intel_lvds(encoder); |
79e53945 | 233 | struct drm_encoder *tmp_encoder; |
49be663f | 234 | u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0; |
79e53945 JB |
235 | |
236 | /* Should never happen!! */ | |
a6c45cf0 | 237 | if (INTEL_INFO(dev)->gen < 4 && intel_crtc->pipe == 0) { |
1ae8c0a5 | 238 | DRM_ERROR("Can't support LVDS on pipe A\n"); |
79e53945 JB |
239 | return false; |
240 | } | |
241 | ||
242 | /* Should never happen!! */ | |
243 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { | |
244 | if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { | |
1ae8c0a5 | 245 | DRM_ERROR("Can't enable LVDS and another " |
79e53945 JB |
246 | "encoder on the same pipe\n"); |
247 | return false; | |
248 | } | |
249 | } | |
1d8e1c75 | 250 | |
79e53945 | 251 | /* |
71677043 | 252 | * We have timings from the BIOS for the panel, put them in |
79e53945 JB |
253 | * to the adjusted mode. The CRTC will be set up for this mode, |
254 | * with the panel scaling set up to source from the H/VDisplay | |
255 | * of the original mode. | |
256 | */ | |
788319d4 | 257 | intel_fixed_panel_mode(intel_lvds->fixed_mode, adjusted_mode); |
1d8e1c75 CW |
258 | |
259 | if (HAS_PCH_SPLIT(dev)) { | |
260 | intel_pch_panel_fitting(dev, intel_lvds->fitting_mode, | |
261 | mode, adjusted_mode); | |
262 | return true; | |
263 | } | |
79e53945 | 264 | |
3fbe18d6 | 265 | /* Make sure pre-965s set dither correctly */ |
a6c45cf0 | 266 | if (INTEL_INFO(dev)->gen < 4) { |
d3849ede | 267 | if (dev_priv->lvds_dither) |
3fbe18d6 ZY |
268 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; |
269 | } | |
270 | ||
271 | /* Native modes don't need fitting */ | |
272 | if (adjusted_mode->hdisplay == mode->hdisplay && | |
49be663f | 273 | adjusted_mode->vdisplay == mode->vdisplay) |
3fbe18d6 | 274 | goto out; |
3fbe18d6 ZY |
275 | |
276 | /* 965+ wants fuzzy fitting */ | |
a6c45cf0 | 277 | if (INTEL_INFO(dev)->gen >= 4) |
49be663f CW |
278 | pfit_control |= ((intel_crtc->pipe << PFIT_PIPE_SHIFT) | |
279 | PFIT_FILTER_FUZZY); | |
280 | ||
3fbe18d6 ZY |
281 | /* |
282 | * Enable automatic panel scaling for non-native modes so that they fill | |
283 | * the screen. Should be enabled before the pipe is enabled, according | |
284 | * to register description and PRM. | |
285 | * Change the value here to see the borders for debugging | |
286 | */ | |
1d8e1c75 CW |
287 | I915_WRITE(BCLRPAT_A, 0); |
288 | I915_WRITE(BCLRPAT_B, 0); | |
3fbe18d6 | 289 | |
ea5b213a | 290 | switch (intel_lvds->fitting_mode) { |
53bd8389 | 291 | case DRM_MODE_SCALE_CENTER: |
3fbe18d6 ZY |
292 | /* |
293 | * For centered modes, we have to calculate border widths & | |
294 | * heights and modify the values programmed into the CRTC. | |
295 | */ | |
49be663f CW |
296 | centre_horizontally(adjusted_mode, mode->hdisplay); |
297 | centre_vertically(adjusted_mode, mode->vdisplay); | |
298 | border = LVDS_BORDER_ENABLE; | |
3fbe18d6 | 299 | break; |
49be663f | 300 | |
3fbe18d6 | 301 | case DRM_MODE_SCALE_ASPECT: |
49be663f | 302 | /* Scale but preserve the aspect ratio */ |
a6c45cf0 | 303 | if (INTEL_INFO(dev)->gen >= 4) { |
49be663f CW |
304 | u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay; |
305 | u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay; | |
306 | ||
3fbe18d6 | 307 | /* 965+ is easy, it does everything in hw */ |
49be663f | 308 | if (scaled_width > scaled_height) |
257e48f1 | 309 | pfit_control |= PFIT_ENABLE | PFIT_SCALING_PILLAR; |
49be663f | 310 | else if (scaled_width < scaled_height) |
257e48f1 CW |
311 | pfit_control |= PFIT_ENABLE | PFIT_SCALING_LETTER; |
312 | else if (adjusted_mode->hdisplay != mode->hdisplay) | |
313 | pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO; | |
3fbe18d6 | 314 | } else { |
49be663f CW |
315 | u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay; |
316 | u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay; | |
3fbe18d6 ZY |
317 | /* |
318 | * For earlier chips we have to calculate the scaling | |
319 | * ratio by hand and program it into the | |
320 | * PFIT_PGM_RATIO register | |
321 | */ | |
49be663f CW |
322 | if (scaled_width > scaled_height) { /* pillar */ |
323 | centre_horizontally(adjusted_mode, scaled_height / mode->vdisplay); | |
324 | ||
325 | border = LVDS_BORDER_ENABLE; | |
326 | if (mode->vdisplay != adjusted_mode->vdisplay) { | |
327 | u32 bits = panel_fitter_scaling(mode->vdisplay, adjusted_mode->vdisplay); | |
328 | pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | | |
329 | bits << PFIT_VERT_SCALE_SHIFT); | |
330 | pfit_control |= (PFIT_ENABLE | | |
331 | VERT_INTERP_BILINEAR | | |
332 | HORIZ_INTERP_BILINEAR); | |
333 | } | |
334 | } else if (scaled_width < scaled_height) { /* letter */ | |
335 | centre_vertically(adjusted_mode, scaled_width / mode->hdisplay); | |
336 | ||
337 | border = LVDS_BORDER_ENABLE; | |
338 | if (mode->hdisplay != adjusted_mode->hdisplay) { | |
339 | u32 bits = panel_fitter_scaling(mode->hdisplay, adjusted_mode->hdisplay); | |
340 | pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT | | |
341 | bits << PFIT_VERT_SCALE_SHIFT); | |
342 | pfit_control |= (PFIT_ENABLE | | |
343 | VERT_INTERP_BILINEAR | | |
344 | HORIZ_INTERP_BILINEAR); | |
345 | } | |
346 | } else | |
347 | /* Aspects match, Let hw scale both directions */ | |
348 | pfit_control |= (PFIT_ENABLE | | |
349 | VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | | |
3fbe18d6 ZY |
350 | VERT_INTERP_BILINEAR | |
351 | HORIZ_INTERP_BILINEAR); | |
3fbe18d6 ZY |
352 | } |
353 | break; | |
354 | ||
355 | case DRM_MODE_SCALE_FULLSCREEN: | |
356 | /* | |
357 | * Full scaling, even if it changes the aspect ratio. | |
358 | * Fortunately this is all done for us in hw. | |
359 | */ | |
257e48f1 CW |
360 | if (mode->vdisplay != adjusted_mode->vdisplay || |
361 | mode->hdisplay != adjusted_mode->hdisplay) { | |
362 | pfit_control |= PFIT_ENABLE; | |
363 | if (INTEL_INFO(dev)->gen >= 4) | |
364 | pfit_control |= PFIT_SCALING_AUTO; | |
365 | else | |
366 | pfit_control |= (VERT_AUTO_SCALE | | |
367 | VERT_INTERP_BILINEAR | | |
368 | HORIZ_AUTO_SCALE | | |
369 | HORIZ_INTERP_BILINEAR); | |
370 | } | |
3fbe18d6 | 371 | break; |
49be663f | 372 | |
3fbe18d6 ZY |
373 | default: |
374 | break; | |
375 | } | |
376 | ||
377 | out: | |
e9e331a8 CW |
378 | if (pfit_control != intel_lvds->pfit_control || |
379 | pfit_pgm_ratios != intel_lvds->pfit_pgm_ratios) { | |
380 | intel_lvds->pfit_control = pfit_control; | |
381 | intel_lvds->pfit_pgm_ratios = pfit_pgm_ratios; | |
382 | intel_lvds->pfit_dirty = true; | |
383 | } | |
49be663f CW |
384 | dev_priv->lvds_border_bits = border; |
385 | ||
79e53945 JB |
386 | /* |
387 | * XXX: It would be nice to support lower refresh rates on the | |
388 | * panels to reduce power consumption, and perhaps match the | |
389 | * user's requested refresh rate. | |
390 | */ | |
391 | ||
392 | return true; | |
393 | } | |
394 | ||
395 | static void intel_lvds_prepare(struct drm_encoder *encoder) | |
396 | { | |
397 | struct drm_device *dev = encoder->dev; | |
398 | struct drm_i915_private *dev_priv = dev->dev_private; | |
788319d4 | 399 | struct intel_lvds *intel_lvds = to_intel_lvds(encoder); |
79e53945 | 400 | |
a9573556 | 401 | dev_priv->backlight_level = intel_panel_get_backlight(dev); |
79e53945 | 402 | |
e9e331a8 CW |
403 | /* We try to do the minimum that is necessary in order to unlock |
404 | * the registers for mode setting. | |
405 | * | |
406 | * On Ironlake, this is quite simple as we just set the unlock key | |
407 | * and ignore all subtleties. (This may cause some issues...) | |
408 | * | |
409 | * Prior to Ironlake, we must disable the pipe if we want to adjust | |
410 | * the panel fitter. However at all other times we can just reset | |
411 | * the registers regardless. | |
412 | */ | |
413 | ||
414 | if (HAS_PCH_SPLIT(dev)) { | |
415 | I915_WRITE(PCH_PP_CONTROL, | |
416 | I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS); | |
417 | } else if (intel_lvds->pfit_dirty) { | |
418 | I915_WRITE(PP_CONTROL, | |
4fd21dc8 CW |
419 | (I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS) |
420 | & ~POWER_TARGET_ON); | |
e9e331a8 CW |
421 | } else { |
422 | I915_WRITE(PP_CONTROL, | |
423 | I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS); | |
424 | } | |
79e53945 JB |
425 | } |
426 | ||
e9e331a8 | 427 | static void intel_lvds_commit(struct drm_encoder *encoder) |
79e53945 JB |
428 | { |
429 | struct drm_device *dev = encoder->dev; | |
430 | struct drm_i915_private *dev_priv = dev->dev_private; | |
788319d4 | 431 | struct intel_lvds *intel_lvds = to_intel_lvds(encoder); |
79e53945 | 432 | |
a9573556 CW |
433 | if (dev_priv->backlight_level == 0) |
434 | dev_priv->backlight_level = intel_panel_get_max_backlight(dev); | |
79e53945 | 435 | |
e9e331a8 CW |
436 | /* Undo any unlocking done in prepare to prevent accidental |
437 | * adjustment of the registers. | |
438 | */ | |
439 | if (HAS_PCH_SPLIT(dev)) { | |
440 | u32 val = I915_READ(PCH_PP_CONTROL); | |
441 | if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS) | |
442 | I915_WRITE(PCH_PP_CONTROL, val & 0x3); | |
443 | } else { | |
444 | u32 val = I915_READ(PP_CONTROL); | |
445 | if ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS) | |
446 | I915_WRITE(PP_CONTROL, val & 0x3); | |
447 | } | |
448 | ||
449 | /* Always do a full power on as we do not know what state | |
450 | * we were left in. | |
451 | */ | |
2a1292fd | 452 | intel_lvds_enable(intel_lvds); |
79e53945 JB |
453 | } |
454 | ||
455 | static void intel_lvds_mode_set(struct drm_encoder *encoder, | |
456 | struct drm_display_mode *mode, | |
457 | struct drm_display_mode *adjusted_mode) | |
458 | { | |
79e53945 JB |
459 | /* |
460 | * The LVDS pin pair will already have been turned on in the | |
461 | * intel_crtc_mode_set since it has a large impact on the DPLL | |
462 | * settings. | |
463 | */ | |
79e53945 JB |
464 | } |
465 | ||
466 | /** | |
467 | * Detect the LVDS connection. | |
468 | * | |
b42d4c5c JB |
469 | * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means |
470 | * connected and closed means disconnected. We also send hotplug events as | |
471 | * needed, using lid status notification from the input layer. | |
79e53945 | 472 | */ |
7b334fcb | 473 | static enum drm_connector_status |
930a9e28 | 474 | intel_lvds_detect(struct drm_connector *connector, bool force) |
79e53945 | 475 | { |
7b9c5abe | 476 | struct drm_device *dev = connector->dev; |
b42d4c5c JB |
477 | enum drm_connector_status status = connector_status_connected; |
478 | ||
7b9c5abe JB |
479 | /* ACPI lid methods were generally unreliable in this generation, so |
480 | * don't even bother. | |
481 | */ | |
6e6c8228 | 482 | if (IS_GEN2(dev) || IS_GEN3(dev)) |
7b9c5abe JB |
483 | return connector_status_connected; |
484 | ||
b42d4c5c | 485 | return status; |
79e53945 JB |
486 | } |
487 | ||
488 | /** | |
489 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. | |
490 | */ | |
491 | static int intel_lvds_get_modes(struct drm_connector *connector) | |
492 | { | |
788319d4 | 493 | struct intel_lvds *intel_lvds = intel_attached_lvds(connector); |
79e53945 | 494 | struct drm_device *dev = connector->dev; |
788319d4 | 495 | struct drm_display_mode *mode; |
79e53945 | 496 | |
3f8ff0e7 | 497 | if (intel_lvds->edid) |
219adae1 | 498 | return drm_add_edid_modes(connector, intel_lvds->edid); |
79e53945 | 499 | |
788319d4 CW |
500 | mode = drm_mode_duplicate(dev, intel_lvds->fixed_mode); |
501 | if (mode == 0) | |
502 | return 0; | |
79e53945 | 503 | |
788319d4 CW |
504 | drm_mode_probed_add(connector, mode); |
505 | return 1; | |
79e53945 JB |
506 | } |
507 | ||
0544edfd TB |
508 | static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id *id) |
509 | { | |
510 | DRM_DEBUG_KMS("Skipping forced modeset for %s\n", id->ident); | |
511 | return 1; | |
512 | } | |
513 | ||
514 | /* The GPU hangs up on these systems if modeset is performed on LID open */ | |
515 | static const struct dmi_system_id intel_no_modeset_on_lid[] = { | |
516 | { | |
517 | .callback = intel_no_modeset_on_lid_dmi_callback, | |
518 | .ident = "Toshiba Tecra A11", | |
519 | .matches = { | |
520 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
521 | DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A11"), | |
522 | }, | |
523 | }, | |
524 | ||
525 | { } /* terminating entry */ | |
526 | }; | |
527 | ||
c9354c85 LT |
528 | /* |
529 | * Lid events. Note the use of 'modeset_on_lid': | |
530 | * - we set it on lid close, and reset it on open | |
531 | * - we use it as a "only once" bit (ie we ignore | |
532 | * duplicate events where it was already properly | |
533 | * set/reset) | |
534 | * - the suspend/resume paths will also set it to | |
535 | * zero, since they restore the mode ("lid open"). | |
536 | */ | |
c1c7af60 JB |
537 | static int intel_lid_notify(struct notifier_block *nb, unsigned long val, |
538 | void *unused) | |
539 | { | |
540 | struct drm_i915_private *dev_priv = | |
541 | container_of(nb, struct drm_i915_private, lid_notifier); | |
542 | struct drm_device *dev = dev_priv->dev; | |
a2565377 | 543 | struct drm_connector *connector = dev_priv->int_lvds_connector; |
c1c7af60 | 544 | |
a2565377 ZY |
545 | /* |
546 | * check and update the status of LVDS connector after receiving | |
547 | * the LID nofication event. | |
548 | */ | |
549 | if (connector) | |
7b334fcb | 550 | connector->status = connector->funcs->detect(connector, |
930a9e28 | 551 | false); |
7b334fcb | 552 | |
0544edfd TB |
553 | /* Don't force modeset on machines where it causes a GPU lockup */ |
554 | if (dmi_check_system(intel_no_modeset_on_lid)) | |
555 | return NOTIFY_OK; | |
c9354c85 LT |
556 | if (!acpi_lid_open()) { |
557 | dev_priv->modeset_on_lid = 1; | |
558 | return NOTIFY_OK; | |
06891e27 | 559 | } |
c1c7af60 | 560 | |
c9354c85 LT |
561 | if (!dev_priv->modeset_on_lid) |
562 | return NOTIFY_OK; | |
563 | ||
564 | dev_priv->modeset_on_lid = 0; | |
565 | ||
566 | mutex_lock(&dev->mode_config.mutex); | |
567 | drm_helper_resume_force_mode(dev); | |
568 | mutex_unlock(&dev->mode_config.mutex); | |
06324194 | 569 | |
c1c7af60 JB |
570 | return NOTIFY_OK; |
571 | } | |
572 | ||
79e53945 JB |
573 | /** |
574 | * intel_lvds_destroy - unregister and free LVDS structures | |
575 | * @connector: connector to free | |
576 | * | |
577 | * Unregister the DDC bus for this connector then free the driver private | |
578 | * structure. | |
579 | */ | |
580 | static void intel_lvds_destroy(struct drm_connector *connector) | |
581 | { | |
c1c7af60 | 582 | struct drm_device *dev = connector->dev; |
c1c7af60 | 583 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 | 584 | |
c1c7af60 JB |
585 | if (dev_priv->lid_notifier.notifier_call) |
586 | acpi_lid_notifier_unregister(&dev_priv->lid_notifier); | |
79e53945 JB |
587 | drm_sysfs_connector_remove(connector); |
588 | drm_connector_cleanup(connector); | |
589 | kfree(connector); | |
590 | } | |
591 | ||
335041ed JB |
592 | static int intel_lvds_set_property(struct drm_connector *connector, |
593 | struct drm_property *property, | |
594 | uint64_t value) | |
595 | { | |
788319d4 | 596 | struct intel_lvds *intel_lvds = intel_attached_lvds(connector); |
3fbe18d6 | 597 | struct drm_device *dev = connector->dev; |
3fbe18d6 | 598 | |
788319d4 CW |
599 | if (property == dev->mode_config.scaling_mode_property) { |
600 | struct drm_crtc *crtc = intel_lvds->base.base.crtc; | |
bb8a3560 | 601 | |
53bd8389 JB |
602 | if (value == DRM_MODE_SCALE_NONE) { |
603 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
788319d4 | 604 | return -EINVAL; |
3fbe18d6 | 605 | } |
788319d4 | 606 | |
ea5b213a | 607 | if (intel_lvds->fitting_mode == value) { |
3fbe18d6 ZY |
608 | /* the LVDS scaling property is not changed */ |
609 | return 0; | |
610 | } | |
ea5b213a | 611 | intel_lvds->fitting_mode = value; |
3fbe18d6 ZY |
612 | if (crtc && crtc->enabled) { |
613 | /* | |
614 | * If the CRTC is enabled, the display will be changed | |
615 | * according to the new panel fitting mode. | |
616 | */ | |
617 | drm_crtc_helper_set_mode(crtc, &crtc->mode, | |
618 | crtc->x, crtc->y, crtc->fb); | |
619 | } | |
620 | } | |
621 | ||
335041ed JB |
622 | return 0; |
623 | } | |
624 | ||
79e53945 JB |
625 | static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
626 | .dpms = intel_lvds_dpms, | |
627 | .mode_fixup = intel_lvds_mode_fixup, | |
628 | .prepare = intel_lvds_prepare, | |
629 | .mode_set = intel_lvds_mode_set, | |
630 | .commit = intel_lvds_commit, | |
631 | }; | |
632 | ||
633 | static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { | |
634 | .get_modes = intel_lvds_get_modes, | |
635 | .mode_valid = intel_lvds_mode_valid, | |
df0e9248 | 636 | .best_encoder = intel_best_encoder, |
79e53945 JB |
637 | }; |
638 | ||
639 | static const struct drm_connector_funcs intel_lvds_connector_funcs = { | |
c9fb15f6 | 640 | .dpms = drm_helper_connector_dpms, |
79e53945 JB |
641 | .detect = intel_lvds_detect, |
642 | .fill_modes = drm_helper_probe_single_connector_modes, | |
335041ed | 643 | .set_property = intel_lvds_set_property, |
79e53945 JB |
644 | .destroy = intel_lvds_destroy, |
645 | }; | |
646 | ||
79e53945 | 647 | static const struct drm_encoder_funcs intel_lvds_enc_funcs = { |
ea5b213a | 648 | .destroy = intel_encoder_destroy, |
79e53945 JB |
649 | }; |
650 | ||
425d244c JW |
651 | static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
652 | { | |
8a4c47f3 | 653 | DRM_DEBUG_KMS("Skipping LVDS initialization for %s\n", id->ident); |
425d244c JW |
654 | return 1; |
655 | } | |
79e53945 | 656 | |
425d244c | 657 | /* These systems claim to have LVDS, but really don't */ |
93c05f22 | 658 | static const struct dmi_system_id intel_no_lvds[] = { |
425d244c JW |
659 | { |
660 | .callback = intel_no_lvds_dmi_callback, | |
661 | .ident = "Apple Mac Mini (Core series)", | |
662 | .matches = { | |
98acd46f | 663 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
664 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), |
665 | }, | |
666 | }, | |
667 | { | |
668 | .callback = intel_no_lvds_dmi_callback, | |
669 | .ident = "Apple Mac Mini (Core 2 series)", | |
670 | .matches = { | |
98acd46f | 671 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
672 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), |
673 | }, | |
674 | }, | |
675 | { | |
676 | .callback = intel_no_lvds_dmi_callback, | |
677 | .ident = "MSI IM-945GSE-A", | |
678 | .matches = { | |
679 | DMI_MATCH(DMI_SYS_VENDOR, "MSI"), | |
680 | DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), | |
681 | }, | |
682 | }, | |
683 | { | |
684 | .callback = intel_no_lvds_dmi_callback, | |
685 | .ident = "Dell Studio Hybrid", | |
686 | .matches = { | |
687 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
688 | DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), | |
689 | }, | |
690 | }, | |
70aa96ca JW |
691 | { |
692 | .callback = intel_no_lvds_dmi_callback, | |
693 | .ident = "AOpen Mini PC", | |
694 | .matches = { | |
695 | DMI_MATCH(DMI_SYS_VENDOR, "AOpen"), | |
696 | DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"), | |
697 | }, | |
698 | }, | |
ed8c754b TV |
699 | { |
700 | .callback = intel_no_lvds_dmi_callback, | |
701 | .ident = "AOpen Mini PC MP915", | |
702 | .matches = { | |
703 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
704 | DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"), | |
705 | }, | |
706 | }, | |
fa0864b2 MC |
707 | { |
708 | .callback = intel_no_lvds_dmi_callback, | |
709 | .ident = "Aopen i945GTt-VFA", | |
710 | .matches = { | |
711 | DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"), | |
712 | }, | |
713 | }, | |
9875557e SB |
714 | { |
715 | .callback = intel_no_lvds_dmi_callback, | |
716 | .ident = "Clientron U800", | |
717 | .matches = { | |
718 | DMI_MATCH(DMI_SYS_VENDOR, "Clientron"), | |
719 | DMI_MATCH(DMI_PRODUCT_NAME, "U800"), | |
720 | }, | |
721 | }, | |
425d244c JW |
722 | |
723 | { } /* terminating entry */ | |
724 | }; | |
79e53945 | 725 | |
18f9ed12 ZY |
726 | /** |
727 | * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID | |
728 | * @dev: drm device | |
729 | * @connector: LVDS connector | |
730 | * | |
731 | * Find the reduced downclock for LVDS in EDID. | |
732 | */ | |
733 | static void intel_find_lvds_downclock(struct drm_device *dev, | |
788319d4 CW |
734 | struct drm_display_mode *fixed_mode, |
735 | struct drm_connector *connector) | |
18f9ed12 ZY |
736 | { |
737 | struct drm_i915_private *dev_priv = dev->dev_private; | |
788319d4 | 738 | struct drm_display_mode *scan; |
18f9ed12 ZY |
739 | int temp_downclock; |
740 | ||
788319d4 | 741 | temp_downclock = fixed_mode->clock; |
18f9ed12 ZY |
742 | list_for_each_entry(scan, &connector->probed_modes, head) { |
743 | /* | |
744 | * If one mode has the same resolution with the fixed_panel | |
745 | * mode while they have the different refresh rate, it means | |
746 | * that the reduced downclock is found for the LVDS. In such | |
747 | * case we can set the different FPx0/1 to dynamically select | |
748 | * between low and high frequency. | |
749 | */ | |
788319d4 CW |
750 | if (scan->hdisplay == fixed_mode->hdisplay && |
751 | scan->hsync_start == fixed_mode->hsync_start && | |
752 | scan->hsync_end == fixed_mode->hsync_end && | |
753 | scan->htotal == fixed_mode->htotal && | |
754 | scan->vdisplay == fixed_mode->vdisplay && | |
755 | scan->vsync_start == fixed_mode->vsync_start && | |
756 | scan->vsync_end == fixed_mode->vsync_end && | |
757 | scan->vtotal == fixed_mode->vtotal) { | |
18f9ed12 ZY |
758 | if (scan->clock < temp_downclock) { |
759 | /* | |
760 | * The downclock is already found. But we | |
761 | * expect to find the lower downclock. | |
762 | */ | |
763 | temp_downclock = scan->clock; | |
764 | } | |
765 | } | |
766 | } | |
788319d4 | 767 | if (temp_downclock < fixed_mode->clock && i915_lvds_downclock) { |
18f9ed12 ZY |
768 | /* We found the downclock for LVDS. */ |
769 | dev_priv->lvds_downclock_avail = 1; | |
770 | dev_priv->lvds_downclock = temp_downclock; | |
771 | DRM_DEBUG_KMS("LVDS downclock is found in EDID. " | |
788319d4 CW |
772 | "Normal clock %dKhz, downclock %dKhz\n", |
773 | fixed_mode->clock, temp_downclock); | |
18f9ed12 | 774 | } |
18f9ed12 ZY |
775 | } |
776 | ||
7cf4f69d ZY |
777 | /* |
778 | * Enumerate the child dev array parsed from VBT to check whether | |
779 | * the LVDS is present. | |
780 | * If it is present, return 1. | |
781 | * If it is not present, return false. | |
782 | * If no child dev is parsed from VBT, it assumes that the LVDS is present. | |
7cf4f69d | 783 | */ |
270eea0f CW |
784 | static bool lvds_is_present_in_vbt(struct drm_device *dev, |
785 | u8 *i2c_pin) | |
7cf4f69d ZY |
786 | { |
787 | struct drm_i915_private *dev_priv = dev->dev_private; | |
425904dd | 788 | int i; |
7cf4f69d ZY |
789 | |
790 | if (!dev_priv->child_dev_num) | |
425904dd | 791 | return true; |
7cf4f69d | 792 | |
7cf4f69d | 793 | for (i = 0; i < dev_priv->child_dev_num; i++) { |
425904dd CW |
794 | struct child_device_config *child = dev_priv->child_dev + i; |
795 | ||
796 | /* If the device type is not LFP, continue. | |
797 | * We have to check both the new identifiers as well as the | |
798 | * old for compatibility with some BIOSes. | |
7cf4f69d | 799 | */ |
425904dd CW |
800 | if (child->device_type != DEVICE_TYPE_INT_LFP && |
801 | child->device_type != DEVICE_TYPE_LFP) | |
7cf4f69d ZY |
802 | continue; |
803 | ||
270eea0f CW |
804 | if (child->i2c_pin) |
805 | *i2c_pin = child->i2c_pin; | |
806 | ||
425904dd CW |
807 | /* However, we cannot trust the BIOS writers to populate |
808 | * the VBT correctly. Since LVDS requires additional | |
809 | * information from AIM blocks, a non-zero addin offset is | |
810 | * a good indicator that the LVDS is actually present. | |
7cf4f69d | 811 | */ |
425904dd CW |
812 | if (child->addin_offset) |
813 | return true; | |
814 | ||
815 | /* But even then some BIOS writers perform some black magic | |
816 | * and instantiate the device without reference to any | |
817 | * additional data. Trust that if the VBT was written into | |
818 | * the OpRegion then they have validated the LVDS's existence. | |
819 | */ | |
820 | if (dev_priv->opregion.vbt) | |
821 | return true; | |
7cf4f69d | 822 | } |
425904dd CW |
823 | |
824 | return false; | |
7cf4f69d ZY |
825 | } |
826 | ||
270eea0f | 827 | static bool intel_lvds_ddc_probe(struct drm_device *dev, u8 pin) |
428d2e82 CW |
828 | { |
829 | struct drm_i915_private *dev_priv = dev->dev_private; | |
830 | u8 buf = 0; | |
831 | struct i2c_msg msgs[] = { | |
832 | { | |
833 | .addr = 0xA0, | |
834 | .flags = 0, | |
835 | .len = 1, | |
836 | .buf = &buf, | |
837 | }, | |
838 | }; | |
270eea0f | 839 | struct i2c_adapter *i2c = &dev_priv->gmbus[pin].adapter; |
b8232e90 CW |
840 | /* XXX this only appears to work when using GMBUS */ |
841 | if (intel_gmbus_is_forced_bit(i2c)) | |
842 | return true; | |
428d2e82 CW |
843 | return i2c_transfer(i2c, msgs, 1) == 1; |
844 | } | |
845 | ||
79e53945 JB |
846 | /** |
847 | * intel_lvds_init - setup LVDS connectors on this device | |
848 | * @dev: drm device | |
849 | * | |
850 | * Create the connector, register the LVDS DDC bus, and try to figure out what | |
851 | * modes we can display on the LVDS panel (if present). | |
852 | */ | |
c5d1b51d | 853 | bool intel_lvds_init(struct drm_device *dev) |
79e53945 JB |
854 | { |
855 | struct drm_i915_private *dev_priv = dev->dev_private; | |
ea5b213a | 856 | struct intel_lvds *intel_lvds; |
21d40d37 | 857 | struct intel_encoder *intel_encoder; |
bb8a3560 | 858 | struct intel_connector *intel_connector; |
79e53945 JB |
859 | struct drm_connector *connector; |
860 | struct drm_encoder *encoder; | |
861 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ | |
862 | struct drm_crtc *crtc; | |
863 | u32 lvds; | |
270eea0f CW |
864 | int pipe; |
865 | u8 pin; | |
79e53945 | 866 | |
425d244c JW |
867 | /* Skip init on machines we know falsely report LVDS */ |
868 | if (dmi_check_system(intel_no_lvds)) | |
c5d1b51d | 869 | return false; |
565dcd46 | 870 | |
270eea0f CW |
871 | pin = GMBUS_PORT_PANEL; |
872 | if (!lvds_is_present_in_vbt(dev, &pin)) { | |
11ba1592 | 873 | DRM_DEBUG_KMS("LVDS is not present in VBT\n"); |
c5d1b51d | 874 | return false; |
38b3037e | 875 | } |
e99da35f | 876 | |
c619eed4 | 877 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 | 878 | if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) |
c5d1b51d | 879 | return false; |
5ceb0f9b | 880 | if (dev_priv->edp.support) { |
28c97730 | 881 | DRM_DEBUG_KMS("disable LVDS for eDP support\n"); |
c5d1b51d | 882 | return false; |
32f9d658 | 883 | } |
541998a1 ZW |
884 | } |
885 | ||
270eea0f | 886 | if (!intel_lvds_ddc_probe(dev, pin)) { |
428d2e82 | 887 | DRM_DEBUG_KMS("LVDS did not respond to DDC probe\n"); |
c5d1b51d | 888 | return false; |
428d2e82 CW |
889 | } |
890 | ||
ea5b213a CW |
891 | intel_lvds = kzalloc(sizeof(struct intel_lvds), GFP_KERNEL); |
892 | if (!intel_lvds) { | |
c5d1b51d | 893 | return false; |
79e53945 JB |
894 | } |
895 | ||
bb8a3560 ZW |
896 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); |
897 | if (!intel_connector) { | |
ea5b213a | 898 | kfree(intel_lvds); |
c5d1b51d | 899 | return false; |
bb8a3560 ZW |
900 | } |
901 | ||
e9e331a8 CW |
902 | if (!HAS_PCH_SPLIT(dev)) { |
903 | intel_lvds->pfit_control = I915_READ(PFIT_CONTROL); | |
904 | } | |
905 | ||
ea5b213a | 906 | intel_encoder = &intel_lvds->base; |
4ef69c7a | 907 | encoder = &intel_encoder->base; |
ea5b213a | 908 | connector = &intel_connector->base; |
bb8a3560 | 909 | drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs, |
79e53945 JB |
910 | DRM_MODE_CONNECTOR_LVDS); |
911 | ||
4ef69c7a | 912 | drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs, |
79e53945 JB |
913 | DRM_MODE_ENCODER_LVDS); |
914 | ||
df0e9248 | 915 | intel_connector_attach_encoder(intel_connector, intel_encoder); |
21d40d37 | 916 | intel_encoder->type = INTEL_OUTPUT_LVDS; |
79e53945 | 917 | |
21d40d37 EA |
918 | intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT); |
919 | intel_encoder->crtc_mask = (1 << 1); | |
4add75c4 CW |
920 | if (INTEL_INFO(dev)->gen >= 5) |
921 | intel_encoder->crtc_mask |= (1 << 0); | |
79e53945 JB |
922 | drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); |
923 | drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); | |
924 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
925 | connector->interlace_allowed = false; | |
926 | connector->doublescan_allowed = false; | |
927 | ||
3fbe18d6 ZY |
928 | /* create the scaling mode property */ |
929 | drm_mode_create_scaling_mode_property(dev); | |
930 | /* | |
931 | * the initial panel fitting mode will be FULL_SCREEN. | |
932 | */ | |
79e53945 | 933 | |
bb8a3560 | 934 | drm_connector_attach_property(&intel_connector->base, |
3fbe18d6 | 935 | dev->mode_config.scaling_mode_property, |
dd1ea37d | 936 | DRM_MODE_SCALE_ASPECT); |
ea5b213a | 937 | intel_lvds->fitting_mode = DRM_MODE_SCALE_ASPECT; |
79e53945 JB |
938 | /* |
939 | * LVDS discovery: | |
940 | * 1) check for EDID on DDC | |
941 | * 2) check for VBT data | |
942 | * 3) check to see if LVDS is already on | |
943 | * if none of the above, no panel | |
944 | * 4) make sure lid is open | |
945 | * if closed, act like it's not there for now | |
946 | */ | |
947 | ||
79e53945 JB |
948 | /* |
949 | * Attempt to get the fixed panel mode from DDC. Assume that the | |
950 | * preferred mode is the right one. | |
951 | */ | |
219adae1 | 952 | intel_lvds->edid = drm_get_edid(connector, |
270eea0f | 953 | &dev_priv->gmbus[pin].adapter); |
3f8ff0e7 CW |
954 | if (intel_lvds->edid) { |
955 | if (drm_add_edid_modes(connector, | |
956 | intel_lvds->edid)) { | |
957 | drm_mode_connector_update_edid_property(connector, | |
958 | intel_lvds->edid); | |
959 | } else { | |
960 | kfree(intel_lvds->edid); | |
961 | intel_lvds->edid = NULL; | |
962 | } | |
963 | } | |
219adae1 | 964 | if (!intel_lvds->edid) { |
788319d4 CW |
965 | /* Didn't get an EDID, so |
966 | * Set wide sync ranges so we get all modes | |
967 | * handed to valid_mode for checking | |
968 | */ | |
969 | connector->display_info.min_vfreq = 0; | |
970 | connector->display_info.max_vfreq = 200; | |
971 | connector->display_info.min_hfreq = 0; | |
972 | connector->display_info.max_hfreq = 200; | |
973 | } | |
79e53945 JB |
974 | |
975 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
79e53945 | 976 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { |
788319d4 | 977 | intel_lvds->fixed_mode = |
79e53945 | 978 | drm_mode_duplicate(dev, scan); |
788319d4 CW |
979 | intel_find_lvds_downclock(dev, |
980 | intel_lvds->fixed_mode, | |
981 | connector); | |
565dcd46 | 982 | goto out; |
79e53945 | 983 | } |
79e53945 JB |
984 | } |
985 | ||
986 | /* Failed to get EDID, what about VBT? */ | |
88631706 | 987 | if (dev_priv->lfp_lvds_vbt_mode) { |
788319d4 | 988 | intel_lvds->fixed_mode = |
88631706 | 989 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
788319d4 CW |
990 | if (intel_lvds->fixed_mode) { |
991 | intel_lvds->fixed_mode->type |= | |
e285f3cd | 992 | DRM_MODE_TYPE_PREFERRED; |
e285f3cd JB |
993 | goto out; |
994 | } | |
79e53945 JB |
995 | } |
996 | ||
997 | /* | |
998 | * If we didn't get EDID, try checking if the panel is already turned | |
999 | * on. If so, assume that whatever is currently programmed is the | |
1000 | * correct mode. | |
1001 | */ | |
541998a1 | 1002 | |
f2b115e6 | 1003 | /* Ironlake: FIXME if still fail, not try pipe mode now */ |
c619eed4 | 1004 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
1005 | goto failed; |
1006 | ||
79e53945 JB |
1007 | lvds = I915_READ(LVDS); |
1008 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; | |
f875c15a | 1009 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
79e53945 JB |
1010 | |
1011 | if (crtc && (lvds & LVDS_PORT_EN)) { | |
788319d4 CW |
1012 | intel_lvds->fixed_mode = intel_crtc_mode_get(dev, crtc); |
1013 | if (intel_lvds->fixed_mode) { | |
1014 | intel_lvds->fixed_mode->type |= | |
79e53945 | 1015 | DRM_MODE_TYPE_PREFERRED; |
565dcd46 | 1016 | goto out; |
79e53945 JB |
1017 | } |
1018 | } | |
1019 | ||
1020 | /* If we still don't have a mode after all that, give up. */ | |
788319d4 | 1021 | if (!intel_lvds->fixed_mode) |
79e53945 JB |
1022 | goto failed; |
1023 | ||
79e53945 | 1024 | out: |
c619eed4 | 1025 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 | 1026 | u32 pwm; |
17fe6981 CW |
1027 | |
1028 | pipe = (I915_READ(PCH_LVDS) & LVDS_PIPEB_SELECT) ? 1 : 0; | |
1029 | ||
1030 | /* make sure PWM is enabled and locked to the LVDS pipe */ | |
541998a1 | 1031 | pwm = I915_READ(BLC_PWM_CPU_CTL2); |
17fe6981 CW |
1032 | if (pipe == 0 && (pwm & PWM_PIPE_B)) |
1033 | I915_WRITE(BLC_PWM_CPU_CTL2, pwm & ~PWM_ENABLE); | |
1034 | if (pipe) | |
1035 | pwm |= PWM_PIPE_B; | |
1036 | else | |
1037 | pwm &= ~PWM_PIPE_B; | |
1038 | I915_WRITE(BLC_PWM_CPU_CTL2, pwm | PWM_ENABLE); | |
541998a1 ZW |
1039 | |
1040 | pwm = I915_READ(BLC_PWM_PCH_CTL1); | |
1041 | pwm |= PWM_PCH_ENABLE; | |
1042 | I915_WRITE(BLC_PWM_PCH_CTL1, pwm); | |
1043 | } | |
c1c7af60 JB |
1044 | dev_priv->lid_notifier.notifier_call = intel_lid_notify; |
1045 | if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) { | |
28c97730 | 1046 | DRM_DEBUG_KMS("lid notifier registration failed\n"); |
c1c7af60 JB |
1047 | dev_priv->lid_notifier.notifier_call = NULL; |
1048 | } | |
a2565377 ZY |
1049 | /* keep the LVDS connector */ |
1050 | dev_priv->int_lvds_connector = connector; | |
79e53945 | 1051 | drm_sysfs_connector_add(connector); |
c5d1b51d | 1052 | return true; |
79e53945 JB |
1053 | |
1054 | failed: | |
8a4c47f3 | 1055 | DRM_DEBUG_KMS("No LVDS modes found, disabling.\n"); |
79e53945 | 1056 | drm_connector_cleanup(connector); |
1991bdfa | 1057 | drm_encoder_cleanup(encoder); |
ea5b213a | 1058 | kfree(intel_lvds); |
bb8a3560 | 1059 | kfree(intel_connector); |
c5d1b51d | 1060 | return false; |
79e53945 | 1061 | } |