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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 ZY |
43 | /* Private structure for the integrated LVDS support */ |
44 | struct intel_lvds_priv { | |
45 | int fitting_mode; | |
46 | u32 pfit_control; | |
47 | u32 pfit_pgm_ratios; | |
48 | }; | |
49 | ||
79e53945 JB |
50 | /** |
51 | * Sets the backlight level. | |
52 | * | |
53 | * \param level backlight level, from 0 to intel_lvds_get_max_backlight(). | |
54 | */ | |
55 | static void intel_lvds_set_backlight(struct drm_device *dev, int level) | |
56 | { | |
57 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 | 58 | u32 blc_pwm_ctl, reg; |
79e53945 | 59 | |
c619eed4 | 60 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
61 | reg = BLC_PWM_CPU_CTL; |
62 | else | |
63 | reg = BLC_PWM_CTL; | |
79e53945 | 64 | |
541998a1 ZW |
65 | blc_pwm_ctl = I915_READ(reg) & ~BACKLIGHT_DUTY_CYCLE_MASK; |
66 | I915_WRITE(reg, (blc_pwm_ctl | | |
79e53945 JB |
67 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); |
68 | } | |
69 | ||
70 | /** | |
71 | * Returns the maximum level of the backlight duty cycle field. | |
72 | */ | |
73 | static u32 intel_lvds_get_max_backlight(struct drm_device *dev) | |
74 | { | |
75 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 ZW |
76 | u32 reg; |
77 | ||
c619eed4 | 78 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
79 | reg = BLC_PWM_PCH_CTL2; |
80 | else | |
81 | reg = BLC_PWM_CTL; | |
79e53945 | 82 | |
541998a1 | 83 | return ((I915_READ(reg) & BACKLIGHT_MODULATION_FREQ_MASK) >> |
79e53945 JB |
84 | BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; |
85 | } | |
86 | ||
87 | /** | |
88 | * Sets the power state for the panel. | |
89 | */ | |
90 | static void intel_lvds_set_power(struct drm_device *dev, bool on) | |
91 | { | |
92 | struct drm_i915_private *dev_priv = dev->dev_private; | |
469d1296 | 93 | u32 pp_status, ctl_reg, status_reg, lvds_reg; |
541998a1 | 94 | |
c619eed4 | 95 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 ZW |
96 | ctl_reg = PCH_PP_CONTROL; |
97 | status_reg = PCH_PP_STATUS; | |
469d1296 | 98 | lvds_reg = PCH_LVDS; |
541998a1 ZW |
99 | } else { |
100 | ctl_reg = PP_CONTROL; | |
101 | status_reg = PP_STATUS; | |
469d1296 | 102 | lvds_reg = LVDS; |
541998a1 | 103 | } |
79e53945 JB |
104 | |
105 | if (on) { | |
469d1296 JB |
106 | I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN); |
107 | POSTING_READ(lvds_reg); | |
108 | ||
541998a1 | 109 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) | |
79e53945 JB |
110 | POWER_TARGET_ON); |
111 | do { | |
541998a1 | 112 | pp_status = I915_READ(status_reg); |
79e53945 JB |
113 | } while ((pp_status & PP_ON) == 0); |
114 | ||
115 | intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle); | |
116 | } else { | |
117 | intel_lvds_set_backlight(dev, 0); | |
118 | ||
541998a1 | 119 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) & |
79e53945 JB |
120 | ~POWER_TARGET_ON); |
121 | do { | |
541998a1 | 122 | pp_status = I915_READ(status_reg); |
79e53945 | 123 | } while (pp_status & PP_ON); |
469d1296 JB |
124 | |
125 | I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN); | |
126 | POSTING_READ(lvds_reg); | |
79e53945 JB |
127 | } |
128 | } | |
129 | ||
130 | static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) | |
131 | { | |
132 | struct drm_device *dev = encoder->dev; | |
133 | ||
134 | if (mode == DRM_MODE_DPMS_ON) | |
135 | intel_lvds_set_power(dev, true); | |
136 | else | |
137 | intel_lvds_set_power(dev, false); | |
138 | ||
139 | /* XXX: We never power down the LVDS pairs. */ | |
140 | } | |
141 | ||
79e53945 JB |
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 | { | |
3fbe18d6 ZY |
163 | /* |
164 | * float point operation is not supported . So the PANEL_RATIO_FACTOR | |
165 | * is defined, which can avoid the float point computation when | |
166 | * calculating the panel ratio. | |
167 | */ | |
168 | #define PANEL_RATIO_FACTOR 8192 | |
79e53945 JB |
169 | struct drm_device *dev = encoder->dev; |
170 | struct drm_i915_private *dev_priv = dev->dev_private; | |
171 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
172 | struct drm_encoder *tmp_encoder; | |
21d40d37 EA |
173 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
174 | struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; | |
3fbe18d6 ZY |
175 | u32 pfit_control = 0, pfit_pgm_ratios = 0; |
176 | int left_border = 0, right_border = 0, top_border = 0; | |
177 | int bottom_border = 0; | |
178 | bool border = 0; | |
179 | int panel_ratio, desired_ratio, vert_scale, horiz_scale; | |
180 | int horiz_ratio, vert_ratio; | |
aa0261f2 ZY |
181 | u32 hsync_width, vsync_width; |
182 | u32 hblank_width, vblank_width; | |
183 | u32 hsync_pos, vsync_pos; | |
79e53945 JB |
184 | |
185 | /* Should never happen!! */ | |
186 | if (!IS_I965G(dev) && intel_crtc->pipe == 0) { | |
1ae8c0a5 | 187 | DRM_ERROR("Can't support LVDS on pipe A\n"); |
79e53945 JB |
188 | return false; |
189 | } | |
190 | ||
191 | /* Should never happen!! */ | |
192 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { | |
193 | if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { | |
1ae8c0a5 | 194 | DRM_ERROR("Can't enable LVDS and another " |
79e53945 JB |
195 | "encoder on the same pipe\n"); |
196 | return false; | |
197 | } | |
198 | } | |
3fbe18d6 ZY |
199 | /* If we don't have a panel mode, there is nothing we can do */ |
200 | if (dev_priv->panel_fixed_mode == NULL) | |
201 | return true; | |
79e53945 JB |
202 | /* |
203 | * If we have timings from the BIOS for the panel, put them in | |
204 | * to the adjusted mode. The CRTC will be set up for this mode, | |
205 | * with the panel scaling set up to source from the H/VDisplay | |
206 | * of the original mode. | |
207 | */ | |
208 | if (dev_priv->panel_fixed_mode != NULL) { | |
209 | adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay; | |
210 | adjusted_mode->hsync_start = | |
211 | dev_priv->panel_fixed_mode->hsync_start; | |
212 | adjusted_mode->hsync_end = | |
213 | dev_priv->panel_fixed_mode->hsync_end; | |
214 | adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal; | |
215 | adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay; | |
216 | adjusted_mode->vsync_start = | |
217 | dev_priv->panel_fixed_mode->vsync_start; | |
218 | adjusted_mode->vsync_end = | |
219 | dev_priv->panel_fixed_mode->vsync_end; | |
220 | adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal; | |
221 | adjusted_mode->clock = dev_priv->panel_fixed_mode->clock; | |
222 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
223 | } | |
224 | ||
3fbe18d6 ZY |
225 | /* Make sure pre-965s set dither correctly */ |
226 | if (!IS_I965G(dev)) { | |
227 | if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) | |
228 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; | |
229 | } | |
230 | ||
231 | /* Native modes don't need fitting */ | |
232 | if (adjusted_mode->hdisplay == mode->hdisplay && | |
233 | adjusted_mode->vdisplay == mode->vdisplay) { | |
234 | pfit_pgm_ratios = 0; | |
235 | border = 0; | |
236 | goto out; | |
237 | } | |
238 | ||
8dd81a38 | 239 | /* full screen scale for now */ |
c619eed4 | 240 | if (HAS_PCH_SPLIT(dev)) |
8dd81a38 ZW |
241 | goto out; |
242 | ||
3fbe18d6 ZY |
243 | /* 965+ wants fuzzy fitting */ |
244 | if (IS_I965G(dev)) | |
245 | pfit_control |= (intel_crtc->pipe << PFIT_PIPE_SHIFT) | | |
246 | PFIT_FILTER_FUZZY; | |
247 | ||
aa0261f2 ZY |
248 | hsync_width = adjusted_mode->crtc_hsync_end - |
249 | adjusted_mode->crtc_hsync_start; | |
250 | vsync_width = adjusted_mode->crtc_vsync_end - | |
251 | adjusted_mode->crtc_vsync_start; | |
252 | hblank_width = adjusted_mode->crtc_hblank_end - | |
253 | adjusted_mode->crtc_hblank_start; | |
254 | vblank_width = adjusted_mode->crtc_vblank_end - | |
255 | adjusted_mode->crtc_vblank_start; | |
3fbe18d6 ZY |
256 | /* |
257 | * Deal with panel fitting options. Figure out how to stretch the | |
258 | * image based on its aspect ratio & the current panel fitting mode. | |
259 | */ | |
260 | panel_ratio = adjusted_mode->hdisplay * PANEL_RATIO_FACTOR / | |
261 | adjusted_mode->vdisplay; | |
262 | desired_ratio = mode->hdisplay * PANEL_RATIO_FACTOR / | |
263 | mode->vdisplay; | |
264 | /* | |
265 | * Enable automatic panel scaling for non-native modes so that they fill | |
266 | * the screen. Should be enabled before the pipe is enabled, according | |
267 | * to register description and PRM. | |
268 | * Change the value here to see the borders for debugging | |
269 | */ | |
c619eed4 | 270 | if (!HAS_PCH_SPLIT(dev)) { |
8dd81a38 ZW |
271 | I915_WRITE(BCLRPAT_A, 0); |
272 | I915_WRITE(BCLRPAT_B, 0); | |
273 | } | |
3fbe18d6 ZY |
274 | |
275 | switch (lvds_priv->fitting_mode) { | |
53bd8389 | 276 | case DRM_MODE_SCALE_CENTER: |
3fbe18d6 ZY |
277 | /* |
278 | * For centered modes, we have to calculate border widths & | |
279 | * heights and modify the values programmed into the CRTC. | |
280 | */ | |
281 | left_border = (adjusted_mode->hdisplay - mode->hdisplay) / 2; | |
282 | right_border = left_border; | |
283 | if (mode->hdisplay & 1) | |
284 | right_border++; | |
285 | top_border = (adjusted_mode->vdisplay - mode->vdisplay) / 2; | |
286 | bottom_border = top_border; | |
287 | if (mode->vdisplay & 1) | |
288 | bottom_border++; | |
289 | /* Set active & border values */ | |
290 | adjusted_mode->crtc_hdisplay = mode->hdisplay; | |
aa0261f2 ZY |
291 | /* Keep the boder be even */ |
292 | if (right_border & 1) | |
293 | right_border++; | |
294 | /* use the border directly instead of border minuse one */ | |
3fbe18d6 | 295 | adjusted_mode->crtc_hblank_start = mode->hdisplay + |
aa0261f2 ZY |
296 | right_border; |
297 | /* keep the blank width constant */ | |
298 | adjusted_mode->crtc_hblank_end = | |
299 | adjusted_mode->crtc_hblank_start + hblank_width; | |
300 | /* get the hsync pos relative to hblank start */ | |
301 | hsync_pos = (hblank_width - hsync_width) / 2; | |
302 | /* keep the hsync pos be even */ | |
303 | if (hsync_pos & 1) | |
304 | hsync_pos++; | |
3fbe18d6 | 305 | adjusted_mode->crtc_hsync_start = |
aa0261f2 ZY |
306 | adjusted_mode->crtc_hblank_start + hsync_pos; |
307 | /* keep the hsync width constant */ | |
3fbe18d6 | 308 | adjusted_mode->crtc_hsync_end = |
aa0261f2 | 309 | adjusted_mode->crtc_hsync_start + hsync_width; |
3fbe18d6 | 310 | adjusted_mode->crtc_vdisplay = mode->vdisplay; |
aa0261f2 | 311 | /* use the border instead of border minus one */ |
3fbe18d6 | 312 | adjusted_mode->crtc_vblank_start = mode->vdisplay + |
aa0261f2 ZY |
313 | bottom_border; |
314 | /* keep the vblank width constant */ | |
315 | adjusted_mode->crtc_vblank_end = | |
316 | adjusted_mode->crtc_vblank_start + vblank_width; | |
317 | /* get the vsync start postion relative to vblank start */ | |
318 | vsync_pos = (vblank_width - vsync_width) / 2; | |
3fbe18d6 | 319 | adjusted_mode->crtc_vsync_start = |
aa0261f2 ZY |
320 | adjusted_mode->crtc_vblank_start + vsync_pos; |
321 | /* keep the vsync width constant */ | |
3fbe18d6 | 322 | adjusted_mode->crtc_vsync_end = |
a3e17eb8 | 323 | adjusted_mode->crtc_vsync_start + vsync_width; |
3fbe18d6 ZY |
324 | border = 1; |
325 | break; | |
326 | case DRM_MODE_SCALE_ASPECT: | |
327 | /* Scale but preserve the spect ratio */ | |
328 | pfit_control |= PFIT_ENABLE; | |
329 | if (IS_I965G(dev)) { | |
330 | /* 965+ is easy, it does everything in hw */ | |
331 | if (panel_ratio > desired_ratio) | |
332 | pfit_control |= PFIT_SCALING_PILLAR; | |
333 | else if (panel_ratio < desired_ratio) | |
334 | pfit_control |= PFIT_SCALING_LETTER; | |
335 | else | |
336 | pfit_control |= PFIT_SCALING_AUTO; | |
337 | } else { | |
338 | /* | |
339 | * For earlier chips we have to calculate the scaling | |
340 | * ratio by hand and program it into the | |
341 | * PFIT_PGM_RATIO register | |
342 | */ | |
343 | u32 horiz_bits, vert_bits, bits = 12; | |
344 | horiz_ratio = mode->hdisplay * PANEL_RATIO_FACTOR/ | |
345 | adjusted_mode->hdisplay; | |
346 | vert_ratio = mode->vdisplay * PANEL_RATIO_FACTOR/ | |
347 | adjusted_mode->vdisplay; | |
348 | horiz_scale = adjusted_mode->hdisplay * | |
349 | PANEL_RATIO_FACTOR / mode->hdisplay; | |
350 | vert_scale = adjusted_mode->vdisplay * | |
351 | PANEL_RATIO_FACTOR / mode->vdisplay; | |
352 | ||
353 | /* retain aspect ratio */ | |
354 | if (panel_ratio > desired_ratio) { /* Pillar */ | |
355 | u32 scaled_width; | |
356 | scaled_width = mode->hdisplay * vert_scale / | |
357 | PANEL_RATIO_FACTOR; | |
358 | horiz_ratio = vert_ratio; | |
359 | pfit_control |= (VERT_AUTO_SCALE | | |
360 | VERT_INTERP_BILINEAR | | |
361 | HORIZ_INTERP_BILINEAR); | |
362 | /* Pillar will have left/right borders */ | |
363 | left_border = (adjusted_mode->hdisplay - | |
364 | scaled_width) / 2; | |
365 | right_border = left_border; | |
366 | if (mode->hdisplay & 1) /* odd resolutions */ | |
367 | right_border++; | |
aa0261f2 ZY |
368 | /* keep the border be even */ |
369 | if (right_border & 1) | |
370 | right_border++; | |
3fbe18d6 | 371 | adjusted_mode->crtc_hdisplay = scaled_width; |
aa0261f2 | 372 | /* use border instead of border minus one */ |
3fbe18d6 | 373 | adjusted_mode->crtc_hblank_start = |
aa0261f2 ZY |
374 | scaled_width + right_border; |
375 | /* keep the hblank width constant */ | |
3fbe18d6 | 376 | adjusted_mode->crtc_hblank_end = |
aa0261f2 ZY |
377 | adjusted_mode->crtc_hblank_start + |
378 | hblank_width; | |
379 | /* | |
380 | * get the hsync start pos relative to | |
381 | * hblank start | |
382 | */ | |
383 | hsync_pos = (hblank_width - hsync_width) / 2; | |
384 | /* keep the hsync_pos be even */ | |
385 | if (hsync_pos & 1) | |
386 | hsync_pos++; | |
3fbe18d6 | 387 | adjusted_mode->crtc_hsync_start = |
aa0261f2 ZY |
388 | adjusted_mode->crtc_hblank_start + |
389 | hsync_pos; | |
390 | /* keept hsync width constant */ | |
3fbe18d6 | 391 | adjusted_mode->crtc_hsync_end = |
aa0261f2 ZY |
392 | adjusted_mode->crtc_hsync_start + |
393 | hsync_width; | |
3fbe18d6 ZY |
394 | border = 1; |
395 | } else if (panel_ratio < desired_ratio) { /* letter */ | |
396 | u32 scaled_height = mode->vdisplay * | |
397 | horiz_scale / PANEL_RATIO_FACTOR; | |
398 | vert_ratio = horiz_ratio; | |
399 | pfit_control |= (HORIZ_AUTO_SCALE | | |
400 | VERT_INTERP_BILINEAR | | |
401 | HORIZ_INTERP_BILINEAR); | |
402 | /* Letterbox will have top/bottom border */ | |
403 | top_border = (adjusted_mode->vdisplay - | |
404 | scaled_height) / 2; | |
405 | bottom_border = top_border; | |
406 | if (mode->vdisplay & 1) | |
407 | bottom_border++; | |
408 | adjusted_mode->crtc_vdisplay = scaled_height; | |
aa0261f2 | 409 | /* use border instead of border minus one */ |
3fbe18d6 | 410 | adjusted_mode->crtc_vblank_start = |
aa0261f2 ZY |
411 | scaled_height + bottom_border; |
412 | /* keep the vblank width constant */ | |
3fbe18d6 | 413 | adjusted_mode->crtc_vblank_end = |
aa0261f2 ZY |
414 | adjusted_mode->crtc_vblank_start + |
415 | vblank_width; | |
416 | /* | |
417 | * get the vsync start pos relative to | |
418 | * vblank start | |
419 | */ | |
420 | vsync_pos = (vblank_width - vsync_width) / 2; | |
3fbe18d6 | 421 | adjusted_mode->crtc_vsync_start = |
aa0261f2 ZY |
422 | adjusted_mode->crtc_vblank_start + |
423 | vsync_pos; | |
424 | /* keep the vsync width constant */ | |
3fbe18d6 | 425 | adjusted_mode->crtc_vsync_end = |
aa0261f2 ZY |
426 | adjusted_mode->crtc_vsync_start + |
427 | vsync_width; | |
3fbe18d6 ZY |
428 | border = 1; |
429 | } else { | |
430 | /* Aspects match, Let hw scale both directions */ | |
431 | pfit_control |= (VERT_AUTO_SCALE | | |
432 | HORIZ_AUTO_SCALE | | |
433 | VERT_INTERP_BILINEAR | | |
434 | HORIZ_INTERP_BILINEAR); | |
435 | } | |
436 | horiz_bits = (1 << bits) * horiz_ratio / | |
437 | PANEL_RATIO_FACTOR; | |
438 | vert_bits = (1 << bits) * vert_ratio / | |
439 | PANEL_RATIO_FACTOR; | |
440 | pfit_pgm_ratios = | |
441 | ((vert_bits << PFIT_VERT_SCALE_SHIFT) & | |
442 | PFIT_VERT_SCALE_MASK) | | |
443 | ((horiz_bits << PFIT_HORIZ_SCALE_SHIFT) & | |
444 | PFIT_HORIZ_SCALE_MASK); | |
445 | } | |
446 | break; | |
447 | ||
448 | case DRM_MODE_SCALE_FULLSCREEN: | |
449 | /* | |
450 | * Full scaling, even if it changes the aspect ratio. | |
451 | * Fortunately this is all done for us in hw. | |
452 | */ | |
453 | pfit_control |= PFIT_ENABLE; | |
454 | if (IS_I965G(dev)) | |
455 | pfit_control |= PFIT_SCALING_AUTO; | |
456 | else | |
457 | pfit_control |= (VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | | |
458 | VERT_INTERP_BILINEAR | | |
459 | HORIZ_INTERP_BILINEAR); | |
460 | break; | |
461 | default: | |
462 | break; | |
463 | } | |
464 | ||
465 | out: | |
466 | lvds_priv->pfit_control = pfit_control; | |
467 | lvds_priv->pfit_pgm_ratios = pfit_pgm_ratios; | |
a3e17eb8 ZY |
468 | /* |
469 | * When there exists the border, it means that the LVDS_BORDR | |
470 | * should be enabled. | |
471 | */ | |
472 | if (border) | |
473 | dev_priv->lvds_border_bits |= LVDS_BORDER_ENABLE; | |
474 | else | |
475 | dev_priv->lvds_border_bits &= ~(LVDS_BORDER_ENABLE); | |
79e53945 JB |
476 | /* |
477 | * XXX: It would be nice to support lower refresh rates on the | |
478 | * panels to reduce power consumption, and perhaps match the | |
479 | * user's requested refresh rate. | |
480 | */ | |
481 | ||
482 | return true; | |
483 | } | |
484 | ||
485 | static void intel_lvds_prepare(struct drm_encoder *encoder) | |
486 | { | |
487 | struct drm_device *dev = encoder->dev; | |
488 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 | 489 | u32 reg; |
79e53945 | 490 | |
c619eed4 | 491 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
492 | reg = BLC_PWM_CPU_CTL; |
493 | else | |
494 | reg = BLC_PWM_CTL; | |
79e53945 | 495 | |
541998a1 | 496 | dev_priv->saveBLC_PWM_CTL = I915_READ(reg); |
79e53945 JB |
497 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
498 | BACKLIGHT_DUTY_CYCLE_MASK); | |
499 | ||
500 | intel_lvds_set_power(dev, false); | |
501 | } | |
502 | ||
503 | static void intel_lvds_commit( struct drm_encoder *encoder) | |
504 | { | |
505 | struct drm_device *dev = encoder->dev; | |
506 | struct drm_i915_private *dev_priv = dev->dev_private; | |
507 | ||
508 | if (dev_priv->backlight_duty_cycle == 0) | |
509 | dev_priv->backlight_duty_cycle = | |
510 | intel_lvds_get_max_backlight(dev); | |
511 | ||
512 | intel_lvds_set_power(dev, true); | |
513 | } | |
514 | ||
515 | static void intel_lvds_mode_set(struct drm_encoder *encoder, | |
516 | struct drm_display_mode *mode, | |
517 | struct drm_display_mode *adjusted_mode) | |
518 | { | |
519 | struct drm_device *dev = encoder->dev; | |
520 | struct drm_i915_private *dev_priv = dev->dev_private; | |
21d40d37 EA |
521 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
522 | struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; | |
79e53945 JB |
523 | |
524 | /* | |
525 | * The LVDS pin pair will already have been turned on in the | |
526 | * intel_crtc_mode_set since it has a large impact on the DPLL | |
527 | * settings. | |
528 | */ | |
529 | ||
c619eed4 | 530 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
531 | return; |
532 | ||
79e53945 JB |
533 | /* |
534 | * Enable automatic panel scaling so that non-native modes fill the | |
535 | * screen. Should be enabled before the pipe is enabled, according to | |
536 | * register description and PRM. | |
537 | */ | |
3fbe18d6 ZY |
538 | I915_WRITE(PFIT_PGM_RATIOS, lvds_priv->pfit_pgm_ratios); |
539 | I915_WRITE(PFIT_CONTROL, lvds_priv->pfit_control); | |
79e53945 JB |
540 | } |
541 | ||
542 | /** | |
543 | * Detect the LVDS connection. | |
544 | * | |
b42d4c5c JB |
545 | * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means |
546 | * connected and closed means disconnected. We also send hotplug events as | |
547 | * needed, using lid status notification from the input layer. | |
79e53945 JB |
548 | */ |
549 | static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) | |
550 | { | |
7b9c5abe | 551 | struct drm_device *dev = connector->dev; |
b42d4c5c JB |
552 | enum drm_connector_status status = connector_status_connected; |
553 | ||
7b9c5abe JB |
554 | /* ACPI lid methods were generally unreliable in this generation, so |
555 | * don't even bother. | |
556 | */ | |
6e6c8228 | 557 | if (IS_GEN2(dev) || IS_GEN3(dev)) |
7b9c5abe JB |
558 | return connector_status_connected; |
559 | ||
b42d4c5c | 560 | return status; |
79e53945 JB |
561 | } |
562 | ||
563 | /** | |
564 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. | |
565 | */ | |
566 | static int intel_lvds_get_modes(struct drm_connector *connector) | |
567 | { | |
568 | struct drm_device *dev = connector->dev; | |
bb8a3560 ZW |
569 | struct drm_encoder *encoder = intel_attached_encoder(connector); |
570 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); | |
79e53945 JB |
571 | struct drm_i915_private *dev_priv = dev->dev_private; |
572 | int ret = 0; | |
573 | ||
bfac4d67 | 574 | if (dev_priv->lvds_edid_good) { |
335af9a2 | 575 | ret = intel_ddc_get_modes(connector, intel_encoder->ddc_bus); |
79e53945 | 576 | |
bfac4d67 ZY |
577 | if (ret) |
578 | return ret; | |
579 | } | |
79e53945 JB |
580 | |
581 | /* Didn't get an EDID, so | |
582 | * Set wide sync ranges so we get all modes | |
583 | * handed to valid_mode for checking | |
584 | */ | |
585 | connector->display_info.min_vfreq = 0; | |
586 | connector->display_info.max_vfreq = 200; | |
587 | connector->display_info.min_hfreq = 0; | |
588 | connector->display_info.max_hfreq = 200; | |
589 | ||
590 | if (dev_priv->panel_fixed_mode != NULL) { | |
591 | struct drm_display_mode *mode; | |
592 | ||
79e53945 JB |
593 | mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); |
594 | drm_mode_probed_add(connector, mode); | |
79e53945 JB |
595 | |
596 | return 1; | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
1073af33 TB |
602 | static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id *id) |
603 | { | |
604 | DRM_DEBUG_KMS("Skipping forced modeset for %s\n", id->ident); | |
605 | return 1; | |
606 | } | |
607 | ||
608 | /* The GPU hangs up on these systems if modeset is performed on LID open */ | |
609 | static const struct dmi_system_id intel_no_modeset_on_lid[] = { | |
610 | { | |
611 | .callback = intel_no_modeset_on_lid_dmi_callback, | |
612 | .ident = "Toshiba Tecra A11", | |
613 | .matches = { | |
614 | DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), | |
615 | DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A11"), | |
616 | }, | |
617 | }, | |
618 | ||
619 | { } /* terminating entry */ | |
620 | }; | |
621 | ||
c9354c85 LT |
622 | /* |
623 | * Lid events. Note the use of 'modeset_on_lid': | |
624 | * - we set it on lid close, and reset it on open | |
625 | * - we use it as a "only once" bit (ie we ignore | |
626 | * duplicate events where it was already properly | |
627 | * set/reset) | |
628 | * - the suspend/resume paths will also set it to | |
629 | * zero, since they restore the mode ("lid open"). | |
630 | */ | |
c1c7af60 JB |
631 | static int intel_lid_notify(struct notifier_block *nb, unsigned long val, |
632 | void *unused) | |
633 | { | |
634 | struct drm_i915_private *dev_priv = | |
635 | container_of(nb, struct drm_i915_private, lid_notifier); | |
636 | struct drm_device *dev = dev_priv->dev; | |
a2565377 | 637 | struct drm_connector *connector = dev_priv->int_lvds_connector; |
c1c7af60 | 638 | |
a2565377 ZY |
639 | /* |
640 | * check and update the status of LVDS connector after receiving | |
641 | * the LID nofication event. | |
642 | */ | |
643 | if (connector) | |
644 | connector->status = connector->funcs->detect(connector); | |
1073af33 TB |
645 | /* Don't force modeset on machines where it causes a GPU lockup */ |
646 | if (dmi_check_system(intel_no_modeset_on_lid)) | |
647 | return NOTIFY_OK; | |
c9354c85 LT |
648 | if (!acpi_lid_open()) { |
649 | dev_priv->modeset_on_lid = 1; | |
650 | return NOTIFY_OK; | |
06891e27 | 651 | } |
c1c7af60 | 652 | |
c9354c85 LT |
653 | if (!dev_priv->modeset_on_lid) |
654 | return NOTIFY_OK; | |
655 | ||
656 | dev_priv->modeset_on_lid = 0; | |
657 | ||
658 | mutex_lock(&dev->mode_config.mutex); | |
659 | drm_helper_resume_force_mode(dev); | |
660 | mutex_unlock(&dev->mode_config.mutex); | |
06324194 | 661 | |
c1c7af60 JB |
662 | return NOTIFY_OK; |
663 | } | |
664 | ||
79e53945 JB |
665 | /** |
666 | * intel_lvds_destroy - unregister and free LVDS structures | |
667 | * @connector: connector to free | |
668 | * | |
669 | * Unregister the DDC bus for this connector then free the driver private | |
670 | * structure. | |
671 | */ | |
672 | static void intel_lvds_destroy(struct drm_connector *connector) | |
673 | { | |
c1c7af60 | 674 | struct drm_device *dev = connector->dev; |
c1c7af60 | 675 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 | 676 | |
c1c7af60 JB |
677 | if (dev_priv->lid_notifier.notifier_call) |
678 | acpi_lid_notifier_unregister(&dev_priv->lid_notifier); | |
79e53945 JB |
679 | drm_sysfs_connector_remove(connector); |
680 | drm_connector_cleanup(connector); | |
681 | kfree(connector); | |
682 | } | |
683 | ||
335041ed JB |
684 | static int intel_lvds_set_property(struct drm_connector *connector, |
685 | struct drm_property *property, | |
686 | uint64_t value) | |
687 | { | |
3fbe18d6 | 688 | struct drm_device *dev = connector->dev; |
3fbe18d6 ZY |
689 | |
690 | if (property == dev->mode_config.scaling_mode_property && | |
691 | connector->encoder) { | |
692 | struct drm_crtc *crtc = connector->encoder->crtc; | |
bb8a3560 ZW |
693 | struct drm_encoder *encoder = connector->encoder; |
694 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); | |
21d40d37 | 695 | struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv; |
bb8a3560 | 696 | |
53bd8389 JB |
697 | if (value == DRM_MODE_SCALE_NONE) { |
698 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
3fbe18d6 ZY |
699 | return 0; |
700 | } | |
701 | if (lvds_priv->fitting_mode == value) { | |
702 | /* the LVDS scaling property is not changed */ | |
703 | return 0; | |
704 | } | |
705 | lvds_priv->fitting_mode = value; | |
706 | if (crtc && crtc->enabled) { | |
707 | /* | |
708 | * If the CRTC is enabled, the display will be changed | |
709 | * according to the new panel fitting mode. | |
710 | */ | |
711 | drm_crtc_helper_set_mode(crtc, &crtc->mode, | |
712 | crtc->x, crtc->y, crtc->fb); | |
713 | } | |
714 | } | |
715 | ||
335041ed JB |
716 | return 0; |
717 | } | |
718 | ||
79e53945 JB |
719 | static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
720 | .dpms = intel_lvds_dpms, | |
721 | .mode_fixup = intel_lvds_mode_fixup, | |
722 | .prepare = intel_lvds_prepare, | |
723 | .mode_set = intel_lvds_mode_set, | |
724 | .commit = intel_lvds_commit, | |
725 | }; | |
726 | ||
727 | static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { | |
728 | .get_modes = intel_lvds_get_modes, | |
729 | .mode_valid = intel_lvds_mode_valid, | |
bb8a3560 | 730 | .best_encoder = intel_attached_encoder, |
79e53945 JB |
731 | }; |
732 | ||
733 | static const struct drm_connector_funcs intel_lvds_connector_funcs = { | |
c9fb15f6 | 734 | .dpms = drm_helper_connector_dpms, |
79e53945 JB |
735 | .detect = intel_lvds_detect, |
736 | .fill_modes = drm_helper_probe_single_connector_modes, | |
335041ed | 737 | .set_property = intel_lvds_set_property, |
79e53945 JB |
738 | .destroy = intel_lvds_destroy, |
739 | }; | |
740 | ||
741 | ||
742 | static void intel_lvds_enc_destroy(struct drm_encoder *encoder) | |
743 | { | |
bb8a3560 ZW |
744 | struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); |
745 | ||
746 | if (intel_encoder->ddc_bus) | |
747 | intel_i2c_destroy(intel_encoder->ddc_bus); | |
79e53945 | 748 | drm_encoder_cleanup(encoder); |
bb8a3560 | 749 | kfree(intel_encoder); |
79e53945 JB |
750 | } |
751 | ||
752 | static const struct drm_encoder_funcs intel_lvds_enc_funcs = { | |
753 | .destroy = intel_lvds_enc_destroy, | |
754 | }; | |
755 | ||
425d244c JW |
756 | static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
757 | { | |
8a4c47f3 | 758 | DRM_DEBUG_KMS("Skipping LVDS initialization for %s\n", id->ident); |
425d244c JW |
759 | return 1; |
760 | } | |
79e53945 | 761 | |
425d244c | 762 | /* These systems claim to have LVDS, but really don't */ |
93c05f22 | 763 | static const struct dmi_system_id intel_no_lvds[] = { |
425d244c JW |
764 | { |
765 | .callback = intel_no_lvds_dmi_callback, | |
766 | .ident = "Apple Mac Mini (Core series)", | |
767 | .matches = { | |
98acd46f | 768 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
769 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), |
770 | }, | |
771 | }, | |
772 | { | |
773 | .callback = intel_no_lvds_dmi_callback, | |
774 | .ident = "Apple Mac Mini (Core 2 series)", | |
775 | .matches = { | |
98acd46f | 776 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
777 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), |
778 | }, | |
779 | }, | |
780 | { | |
781 | .callback = intel_no_lvds_dmi_callback, | |
782 | .ident = "MSI IM-945GSE-A", | |
783 | .matches = { | |
784 | DMI_MATCH(DMI_SYS_VENDOR, "MSI"), | |
785 | DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), | |
786 | }, | |
787 | }, | |
788 | { | |
789 | .callback = intel_no_lvds_dmi_callback, | |
790 | .ident = "Dell Studio Hybrid", | |
791 | .matches = { | |
792 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
793 | DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), | |
794 | }, | |
795 | }, | |
70aa96ca JW |
796 | { |
797 | .callback = intel_no_lvds_dmi_callback, | |
798 | .ident = "AOpen Mini PC", | |
799 | .matches = { | |
800 | DMI_MATCH(DMI_SYS_VENDOR, "AOpen"), | |
801 | DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"), | |
802 | }, | |
803 | }, | |
ed8c754b TV |
804 | { |
805 | .callback = intel_no_lvds_dmi_callback, | |
806 | .ident = "AOpen Mini PC MP915", | |
807 | .matches = { | |
808 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
809 | DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"), | |
810 | }, | |
811 | }, | |
fa0864b2 MC |
812 | { |
813 | .callback = intel_no_lvds_dmi_callback, | |
814 | .ident = "Aopen i945GTt-VFA", | |
815 | .matches = { | |
816 | DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"), | |
817 | }, | |
818 | }, | |
9875557e SB |
819 | { |
820 | .callback = intel_no_lvds_dmi_callback, | |
821 | .ident = "Clientron U800", | |
822 | .matches = { | |
823 | DMI_MATCH(DMI_SYS_VENDOR, "Clientron"), | |
824 | DMI_MATCH(DMI_PRODUCT_NAME, "U800"), | |
825 | }, | |
826 | }, | |
425d244c JW |
827 | |
828 | { } /* terminating entry */ | |
829 | }; | |
79e53945 | 830 | |
18f9ed12 ZY |
831 | /** |
832 | * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID | |
833 | * @dev: drm device | |
834 | * @connector: LVDS connector | |
835 | * | |
836 | * Find the reduced downclock for LVDS in EDID. | |
837 | */ | |
838 | static void intel_find_lvds_downclock(struct drm_device *dev, | |
839 | struct drm_connector *connector) | |
840 | { | |
841 | struct drm_i915_private *dev_priv = dev->dev_private; | |
842 | struct drm_display_mode *scan, *panel_fixed_mode; | |
843 | int temp_downclock; | |
844 | ||
845 | panel_fixed_mode = dev_priv->panel_fixed_mode; | |
846 | temp_downclock = panel_fixed_mode->clock; | |
847 | ||
848 | mutex_lock(&dev->mode_config.mutex); | |
849 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
850 | /* | |
851 | * If one mode has the same resolution with the fixed_panel | |
852 | * mode while they have the different refresh rate, it means | |
853 | * that the reduced downclock is found for the LVDS. In such | |
854 | * case we can set the different FPx0/1 to dynamically select | |
855 | * between low and high frequency. | |
856 | */ | |
857 | if (scan->hdisplay == panel_fixed_mode->hdisplay && | |
858 | scan->hsync_start == panel_fixed_mode->hsync_start && | |
859 | scan->hsync_end == panel_fixed_mode->hsync_end && | |
860 | scan->htotal == panel_fixed_mode->htotal && | |
861 | scan->vdisplay == panel_fixed_mode->vdisplay && | |
862 | scan->vsync_start == panel_fixed_mode->vsync_start && | |
863 | scan->vsync_end == panel_fixed_mode->vsync_end && | |
864 | scan->vtotal == panel_fixed_mode->vtotal) { | |
865 | if (scan->clock < temp_downclock) { | |
866 | /* | |
867 | * The downclock is already found. But we | |
868 | * expect to find the lower downclock. | |
869 | */ | |
870 | temp_downclock = scan->clock; | |
871 | } | |
872 | } | |
873 | } | |
874 | mutex_unlock(&dev->mode_config.mutex); | |
33814341 JB |
875 | if (temp_downclock < panel_fixed_mode->clock && |
876 | i915_lvds_downclock) { | |
18f9ed12 ZY |
877 | /* We found the downclock for LVDS. */ |
878 | dev_priv->lvds_downclock_avail = 1; | |
879 | dev_priv->lvds_downclock = temp_downclock; | |
880 | DRM_DEBUG_KMS("LVDS downclock is found in EDID. " | |
881 | "Normal clock %dKhz, downclock %dKhz\n", | |
882 | panel_fixed_mode->clock, temp_downclock); | |
883 | } | |
884 | return; | |
885 | } | |
886 | ||
7cf4f69d ZY |
887 | /* |
888 | * Enumerate the child dev array parsed from VBT to check whether | |
889 | * the LVDS is present. | |
890 | * If it is present, return 1. | |
891 | * If it is not present, return false. | |
892 | * If no child dev is parsed from VBT, it assumes that the LVDS is present. | |
893 | * Note: The addin_offset should also be checked for LVDS panel. | |
894 | * Only when it is non-zero, it is assumed that it is present. | |
895 | */ | |
6e36595a | 896 | static int lvds_is_present_in_vbt(struct drm_device *dev) |
7cf4f69d ZY |
897 | { |
898 | struct drm_i915_private *dev_priv = dev->dev_private; | |
899 | struct child_device_config *p_child; | |
900 | int i, ret; | |
901 | ||
902 | if (!dev_priv->child_dev_num) | |
903 | return 1; | |
904 | ||
905 | ret = 0; | |
906 | for (i = 0; i < dev_priv->child_dev_num; i++) { | |
907 | p_child = dev_priv->child_dev + i; | |
908 | /* | |
909 | * If the device type is not LFP, continue. | |
910 | * If the device type is 0x22, it is also regarded as LFP. | |
911 | */ | |
912 | if (p_child->device_type != DEVICE_TYPE_INT_LFP && | |
913 | p_child->device_type != DEVICE_TYPE_LFP) | |
914 | continue; | |
915 | ||
916 | /* The addin_offset should be checked. Only when it is | |
917 | * non-zero, it is regarded as present. | |
918 | */ | |
919 | if (p_child->addin_offset) { | |
920 | ret = 1; | |
921 | break; | |
922 | } | |
923 | } | |
924 | return ret; | |
925 | } | |
926 | ||
79e53945 JB |
927 | /** |
928 | * intel_lvds_init - setup LVDS connectors on this device | |
929 | * @dev: drm device | |
930 | * | |
931 | * Create the connector, register the LVDS DDC bus, and try to figure out what | |
932 | * modes we can display on the LVDS panel (if present). | |
933 | */ | |
934 | void intel_lvds_init(struct drm_device *dev) | |
935 | { | |
936 | struct drm_i915_private *dev_priv = dev->dev_private; | |
21d40d37 | 937 | struct intel_encoder *intel_encoder; |
bb8a3560 | 938 | struct intel_connector *intel_connector; |
79e53945 JB |
939 | struct drm_connector *connector; |
940 | struct drm_encoder *encoder; | |
941 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ | |
942 | struct drm_crtc *crtc; | |
3fbe18d6 | 943 | struct intel_lvds_priv *lvds_priv; |
79e53945 | 944 | u32 lvds; |
541998a1 | 945 | int pipe, gpio = GPIOC; |
79e53945 | 946 | |
425d244c JW |
947 | /* Skip init on machines we know falsely report LVDS */ |
948 | if (dmi_check_system(intel_no_lvds)) | |
565dcd46 | 949 | return; |
565dcd46 | 950 | |
11ba1592 MG |
951 | if (!lvds_is_present_in_vbt(dev)) { |
952 | DRM_DEBUG_KMS("LVDS is not present in VBT\n"); | |
e99da35f | 953 | return; |
38b3037e | 954 | } |
e99da35f | 955 | |
c619eed4 | 956 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 ZW |
957 | if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) |
958 | return; | |
32f9d658 | 959 | if (dev_priv->edp_support) { |
28c97730 | 960 | DRM_DEBUG_KMS("disable LVDS for eDP support\n"); |
32f9d658 ZW |
961 | return; |
962 | } | |
541998a1 ZW |
963 | gpio = PCH_GPIOC; |
964 | } | |
965 | ||
21d40d37 | 966 | intel_encoder = kzalloc(sizeof(struct intel_encoder) + |
3fbe18d6 | 967 | sizeof(struct intel_lvds_priv), GFP_KERNEL); |
21d40d37 | 968 | if (!intel_encoder) { |
79e53945 JB |
969 | return; |
970 | } | |
971 | ||
bb8a3560 ZW |
972 | intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL); |
973 | if (!intel_connector) { | |
974 | kfree(intel_encoder); | |
975 | return; | |
976 | } | |
977 | ||
978 | connector = &intel_connector->base; | |
21d40d37 | 979 | encoder = &intel_encoder->enc; |
bb8a3560 | 980 | drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs, |
79e53945 JB |
981 | DRM_MODE_CONNECTOR_LVDS); |
982 | ||
21d40d37 | 983 | drm_encoder_init(dev, &intel_encoder->enc, &intel_lvds_enc_funcs, |
79e53945 JB |
984 | DRM_MODE_ENCODER_LVDS); |
985 | ||
bb8a3560 | 986 | drm_mode_connector_attach_encoder(&intel_connector->base, &intel_encoder->enc); |
21d40d37 | 987 | intel_encoder->type = INTEL_OUTPUT_LVDS; |
79e53945 | 988 | |
21d40d37 EA |
989 | intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT); |
990 | intel_encoder->crtc_mask = (1 << 1); | |
0f3ee801 AJ |
991 | if (IS_I965G(dev)) |
992 | intel_encoder->crtc_mask |= (1 << 0); | |
79e53945 JB |
993 | drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); |
994 | drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); | |
995 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
996 | connector->interlace_allowed = false; | |
997 | connector->doublescan_allowed = false; | |
998 | ||
21d40d37 EA |
999 | lvds_priv = (struct intel_lvds_priv *)(intel_encoder + 1); |
1000 | intel_encoder->dev_priv = lvds_priv; | |
3fbe18d6 ZY |
1001 | /* create the scaling mode property */ |
1002 | drm_mode_create_scaling_mode_property(dev); | |
1003 | /* | |
1004 | * the initial panel fitting mode will be FULL_SCREEN. | |
1005 | */ | |
79e53945 | 1006 | |
bb8a3560 | 1007 | drm_connector_attach_property(&intel_connector->base, |
3fbe18d6 | 1008 | dev->mode_config.scaling_mode_property, |
dd1ea37d JB |
1009 | DRM_MODE_SCALE_ASPECT); |
1010 | lvds_priv->fitting_mode = DRM_MODE_SCALE_ASPECT; | |
79e53945 JB |
1011 | /* |
1012 | * LVDS discovery: | |
1013 | * 1) check for EDID on DDC | |
1014 | * 2) check for VBT data | |
1015 | * 3) check to see if LVDS is already on | |
1016 | * if none of the above, no panel | |
1017 | * 4) make sure lid is open | |
1018 | * if closed, act like it's not there for now | |
1019 | */ | |
1020 | ||
1021 | /* Set up the DDC bus. */ | |
21d40d37 EA |
1022 | intel_encoder->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C"); |
1023 | if (!intel_encoder->ddc_bus) { | |
79e53945 JB |
1024 | dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " |
1025 | "failed.\n"); | |
1026 | goto failed; | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Attempt to get the fixed panel mode from DDC. Assume that the | |
1031 | * preferred mode is the right one. | |
1032 | */ | |
bfac4d67 ZY |
1033 | dev_priv->lvds_edid_good = true; |
1034 | ||
335af9a2 | 1035 | if (!intel_ddc_get_modes(connector, intel_encoder->ddc_bus)) |
bfac4d67 | 1036 | dev_priv->lvds_edid_good = false; |
79e53945 JB |
1037 | |
1038 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
1039 | mutex_lock(&dev->mode_config.mutex); | |
1040 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { | |
1041 | dev_priv->panel_fixed_mode = | |
1042 | drm_mode_duplicate(dev, scan); | |
1043 | mutex_unlock(&dev->mode_config.mutex); | |
18f9ed12 | 1044 | intel_find_lvds_downclock(dev, connector); |
565dcd46 | 1045 | goto out; |
79e53945 JB |
1046 | } |
1047 | mutex_unlock(&dev->mode_config.mutex); | |
1048 | } | |
1049 | ||
1050 | /* Failed to get EDID, what about VBT? */ | |
88631706 | 1051 | if (dev_priv->lfp_lvds_vbt_mode) { |
79e53945 JB |
1052 | mutex_lock(&dev->mode_config.mutex); |
1053 | dev_priv->panel_fixed_mode = | |
88631706 | 1054 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
79e53945 | 1055 | mutex_unlock(&dev->mode_config.mutex); |
e285f3cd JB |
1056 | if (dev_priv->panel_fixed_mode) { |
1057 | dev_priv->panel_fixed_mode->type |= | |
1058 | DRM_MODE_TYPE_PREFERRED; | |
e285f3cd JB |
1059 | goto out; |
1060 | } | |
79e53945 JB |
1061 | } |
1062 | ||
1063 | /* | |
1064 | * If we didn't get EDID, try checking if the panel is already turned | |
1065 | * on. If so, assume that whatever is currently programmed is the | |
1066 | * correct mode. | |
1067 | */ | |
541998a1 | 1068 | |
f2b115e6 | 1069 | /* Ironlake: FIXME if still fail, not try pipe mode now */ |
c619eed4 | 1070 | if (HAS_PCH_SPLIT(dev)) |
541998a1 ZW |
1071 | goto failed; |
1072 | ||
79e53945 JB |
1073 | lvds = I915_READ(LVDS); |
1074 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; | |
1075 | crtc = intel_get_crtc_from_pipe(dev, pipe); | |
1076 | ||
1077 | if (crtc && (lvds & LVDS_PORT_EN)) { | |
1078 | dev_priv->panel_fixed_mode = intel_crtc_mode_get(dev, crtc); | |
1079 | if (dev_priv->panel_fixed_mode) { | |
1080 | dev_priv->panel_fixed_mode->type |= | |
1081 | DRM_MODE_TYPE_PREFERRED; | |
565dcd46 | 1082 | goto out; |
79e53945 JB |
1083 | } |
1084 | } | |
1085 | ||
1086 | /* If we still don't have a mode after all that, give up. */ | |
1087 | if (!dev_priv->panel_fixed_mode) | |
1088 | goto failed; | |
1089 | ||
79e53945 | 1090 | out: |
c619eed4 | 1091 | if (HAS_PCH_SPLIT(dev)) { |
541998a1 ZW |
1092 | u32 pwm; |
1093 | /* make sure PWM is enabled */ | |
1094 | pwm = I915_READ(BLC_PWM_CPU_CTL2); | |
1095 | pwm |= (PWM_ENABLE | PWM_PIPE_B); | |
1096 | I915_WRITE(BLC_PWM_CPU_CTL2, pwm); | |
1097 | ||
1098 | pwm = I915_READ(BLC_PWM_PCH_CTL1); | |
1099 | pwm |= PWM_PCH_ENABLE; | |
1100 | I915_WRITE(BLC_PWM_PCH_CTL1, pwm); | |
1101 | } | |
c1c7af60 JB |
1102 | dev_priv->lid_notifier.notifier_call = intel_lid_notify; |
1103 | if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) { | |
28c97730 | 1104 | DRM_DEBUG_KMS("lid notifier registration failed\n"); |
c1c7af60 JB |
1105 | dev_priv->lid_notifier.notifier_call = NULL; |
1106 | } | |
a2565377 ZY |
1107 | /* keep the LVDS connector */ |
1108 | dev_priv->int_lvds_connector = connector; | |
79e53945 JB |
1109 | drm_sysfs_connector_add(connector); |
1110 | return; | |
1111 | ||
1112 | failed: | |
8a4c47f3 | 1113 | DRM_DEBUG_KMS("No LVDS modes found, disabling.\n"); |
21d40d37 EA |
1114 | if (intel_encoder->ddc_bus) |
1115 | intel_i2c_destroy(intel_encoder->ddc_bus); | |
79e53945 | 1116 | drm_connector_cleanup(connector); |
1991bdfa | 1117 | drm_encoder_cleanup(encoder); |
21d40d37 | 1118 | kfree(intel_encoder); |
bb8a3560 | 1119 | kfree(intel_connector); |
79e53945 | 1120 | } |