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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 JB |
32 | #include <linux/i2c.h> |
33 | #include "drmP.h" | |
34 | #include "drm.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_edid.h" | |
37 | #include "intel_drv.h" | |
38 | #include "i915_drm.h" | |
39 | #include "i915_drv.h" | |
e99da35f | 40 | #include <linux/acpi.h> |
79e53945 | 41 | |
3fbe18d6 ZY |
42 | /* Private structure for the integrated LVDS support */ |
43 | struct intel_lvds_priv { | |
44 | int fitting_mode; | |
45 | u32 pfit_control; | |
46 | u32 pfit_pgm_ratios; | |
47 | }; | |
48 | ||
79e53945 JB |
49 | /** |
50 | * Sets the backlight level. | |
51 | * | |
52 | * \param level backlight level, from 0 to intel_lvds_get_max_backlight(). | |
53 | */ | |
54 | static void intel_lvds_set_backlight(struct drm_device *dev, int level) | |
55 | { | |
56 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 | 57 | u32 blc_pwm_ctl, reg; |
79e53945 | 58 | |
f2b115e6 | 59 | if (IS_IRONLAKE(dev)) |
541998a1 ZW |
60 | reg = BLC_PWM_CPU_CTL; |
61 | else | |
62 | reg = BLC_PWM_CTL; | |
79e53945 | 63 | |
541998a1 ZW |
64 | blc_pwm_ctl = I915_READ(reg) & ~BACKLIGHT_DUTY_CYCLE_MASK; |
65 | I915_WRITE(reg, (blc_pwm_ctl | | |
79e53945 JB |
66 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); |
67 | } | |
68 | ||
69 | /** | |
70 | * Returns the maximum level of the backlight duty cycle field. | |
71 | */ | |
72 | static u32 intel_lvds_get_max_backlight(struct drm_device *dev) | |
73 | { | |
74 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 ZW |
75 | u32 reg; |
76 | ||
f2b115e6 | 77 | if (IS_IRONLAKE(dev)) |
541998a1 ZW |
78 | reg = BLC_PWM_PCH_CTL2; |
79 | else | |
80 | reg = BLC_PWM_CTL; | |
79e53945 | 81 | |
541998a1 | 82 | return ((I915_READ(reg) & BACKLIGHT_MODULATION_FREQ_MASK) >> |
79e53945 JB |
83 | BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; |
84 | } | |
85 | ||
86 | /** | |
87 | * Sets the power state for the panel. | |
88 | */ | |
89 | static void intel_lvds_set_power(struct drm_device *dev, bool on) | |
90 | { | |
91 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 ZW |
92 | u32 pp_status, ctl_reg, status_reg; |
93 | ||
f2b115e6 | 94 | if (IS_IRONLAKE(dev)) { |
541998a1 ZW |
95 | ctl_reg = PCH_PP_CONTROL; |
96 | status_reg = PCH_PP_STATUS; | |
97 | } else { | |
98 | ctl_reg = PP_CONTROL; | |
99 | status_reg = PP_STATUS; | |
100 | } | |
79e53945 JB |
101 | |
102 | if (on) { | |
541998a1 | 103 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) | |
79e53945 JB |
104 | POWER_TARGET_ON); |
105 | do { | |
541998a1 | 106 | pp_status = I915_READ(status_reg); |
79e53945 JB |
107 | } while ((pp_status & PP_ON) == 0); |
108 | ||
109 | intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle); | |
110 | } else { | |
111 | intel_lvds_set_backlight(dev, 0); | |
112 | ||
541998a1 | 113 | I915_WRITE(ctl_reg, I915_READ(ctl_reg) & |
79e53945 JB |
114 | ~POWER_TARGET_ON); |
115 | do { | |
541998a1 | 116 | pp_status = I915_READ(status_reg); |
79e53945 JB |
117 | } while (pp_status & PP_ON); |
118 | } | |
119 | } | |
120 | ||
121 | static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) | |
122 | { | |
123 | struct drm_device *dev = encoder->dev; | |
124 | ||
125 | if (mode == DRM_MODE_DPMS_ON) | |
126 | intel_lvds_set_power(dev, true); | |
127 | else | |
128 | intel_lvds_set_power(dev, false); | |
129 | ||
130 | /* XXX: We never power down the LVDS pairs. */ | |
131 | } | |
132 | ||
133 | static void intel_lvds_save(struct drm_connector *connector) | |
134 | { | |
135 | struct drm_device *dev = connector->dev; | |
136 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 ZW |
137 | u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg; |
138 | u32 pwm_ctl_reg; | |
139 | ||
f2b115e6 | 140 | if (IS_IRONLAKE(dev)) { |
541998a1 ZW |
141 | pp_on_reg = PCH_PP_ON_DELAYS; |
142 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
143 | pp_ctl_reg = PCH_PP_CONTROL; | |
144 | pp_div_reg = PCH_PP_DIVISOR; | |
145 | pwm_ctl_reg = BLC_PWM_CPU_CTL; | |
146 | } else { | |
147 | pp_on_reg = PP_ON_DELAYS; | |
148 | pp_off_reg = PP_OFF_DELAYS; | |
149 | pp_ctl_reg = PP_CONTROL; | |
150 | pp_div_reg = PP_DIVISOR; | |
151 | pwm_ctl_reg = BLC_PWM_CTL; | |
152 | } | |
79e53945 | 153 | |
541998a1 ZW |
154 | dev_priv->savePP_ON = I915_READ(pp_on_reg); |
155 | dev_priv->savePP_OFF = I915_READ(pp_off_reg); | |
156 | dev_priv->savePP_CONTROL = I915_READ(pp_ctl_reg); | |
157 | dev_priv->savePP_DIVISOR = I915_READ(pp_div_reg); | |
158 | dev_priv->saveBLC_PWM_CTL = I915_READ(pwm_ctl_reg); | |
79e53945 JB |
159 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
160 | BACKLIGHT_DUTY_CYCLE_MASK); | |
161 | ||
162 | /* | |
163 | * If the light is off at server startup, just make it full brightness | |
164 | */ | |
165 | if (dev_priv->backlight_duty_cycle == 0) | |
166 | dev_priv->backlight_duty_cycle = | |
167 | intel_lvds_get_max_backlight(dev); | |
168 | } | |
169 | ||
170 | static void intel_lvds_restore(struct drm_connector *connector) | |
171 | { | |
172 | struct drm_device *dev = connector->dev; | |
173 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 ZW |
174 | u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg; |
175 | u32 pwm_ctl_reg; | |
176 | ||
f2b115e6 | 177 | if (IS_IRONLAKE(dev)) { |
541998a1 ZW |
178 | pp_on_reg = PCH_PP_ON_DELAYS; |
179 | pp_off_reg = PCH_PP_OFF_DELAYS; | |
180 | pp_ctl_reg = PCH_PP_CONTROL; | |
181 | pp_div_reg = PCH_PP_DIVISOR; | |
182 | pwm_ctl_reg = BLC_PWM_CPU_CTL; | |
183 | } else { | |
184 | pp_on_reg = PP_ON_DELAYS; | |
185 | pp_off_reg = PP_OFF_DELAYS; | |
186 | pp_ctl_reg = PP_CONTROL; | |
187 | pp_div_reg = PP_DIVISOR; | |
188 | pwm_ctl_reg = BLC_PWM_CTL; | |
189 | } | |
79e53945 | 190 | |
541998a1 ZW |
191 | I915_WRITE(pwm_ctl_reg, dev_priv->saveBLC_PWM_CTL); |
192 | I915_WRITE(pp_on_reg, dev_priv->savePP_ON); | |
193 | I915_WRITE(pp_off_reg, dev_priv->savePP_OFF); | |
194 | I915_WRITE(pp_div_reg, dev_priv->savePP_DIVISOR); | |
195 | I915_WRITE(pp_ctl_reg, dev_priv->savePP_CONTROL); | |
79e53945 JB |
196 | if (dev_priv->savePP_CONTROL & POWER_TARGET_ON) |
197 | intel_lvds_set_power(dev, true); | |
198 | else | |
199 | intel_lvds_set_power(dev, false); | |
200 | } | |
201 | ||
202 | static int intel_lvds_mode_valid(struct drm_connector *connector, | |
203 | struct drm_display_mode *mode) | |
204 | { | |
205 | struct drm_device *dev = connector->dev; | |
206 | struct drm_i915_private *dev_priv = dev->dev_private; | |
207 | struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode; | |
208 | ||
209 | if (fixed_mode) { | |
210 | if (mode->hdisplay > fixed_mode->hdisplay) | |
211 | return MODE_PANEL; | |
212 | if (mode->vdisplay > fixed_mode->vdisplay) | |
213 | return MODE_PANEL; | |
214 | } | |
215 | ||
216 | return MODE_OK; | |
217 | } | |
218 | ||
219 | static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, | |
220 | struct drm_display_mode *mode, | |
221 | struct drm_display_mode *adjusted_mode) | |
222 | { | |
3fbe18d6 ZY |
223 | /* |
224 | * float point operation is not supported . So the PANEL_RATIO_FACTOR | |
225 | * is defined, which can avoid the float point computation when | |
226 | * calculating the panel ratio. | |
227 | */ | |
228 | #define PANEL_RATIO_FACTOR 8192 | |
79e53945 JB |
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); | |
232 | struct drm_encoder *tmp_encoder; | |
3fbe18d6 ZY |
233 | struct intel_output *intel_output = enc_to_intel_output(encoder); |
234 | struct intel_lvds_priv *lvds_priv = intel_output->dev_priv; | |
235 | u32 pfit_control = 0, pfit_pgm_ratios = 0; | |
236 | int left_border = 0, right_border = 0, top_border = 0; | |
237 | int bottom_border = 0; | |
238 | bool border = 0; | |
239 | int panel_ratio, desired_ratio, vert_scale, horiz_scale; | |
240 | int horiz_ratio, vert_ratio; | |
aa0261f2 ZY |
241 | u32 hsync_width, vsync_width; |
242 | u32 hblank_width, vblank_width; | |
243 | u32 hsync_pos, vsync_pos; | |
79e53945 JB |
244 | |
245 | /* Should never happen!! */ | |
246 | if (!IS_I965G(dev) && intel_crtc->pipe == 0) { | |
1ae8c0a5 | 247 | DRM_ERROR("Can't support LVDS on pipe A\n"); |
79e53945 JB |
248 | return false; |
249 | } | |
250 | ||
251 | /* Should never happen!! */ | |
252 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { | |
253 | if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { | |
1ae8c0a5 | 254 | DRM_ERROR("Can't enable LVDS and another " |
79e53945 JB |
255 | "encoder on the same pipe\n"); |
256 | return false; | |
257 | } | |
258 | } | |
3fbe18d6 ZY |
259 | /* If we don't have a panel mode, there is nothing we can do */ |
260 | if (dev_priv->panel_fixed_mode == NULL) | |
261 | return true; | |
79e53945 JB |
262 | /* |
263 | * If we have timings from the BIOS for the panel, put them in | |
264 | * to the adjusted mode. The CRTC will be set up for this mode, | |
265 | * with the panel scaling set up to source from the H/VDisplay | |
266 | * of the original mode. | |
267 | */ | |
268 | if (dev_priv->panel_fixed_mode != NULL) { | |
269 | adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay; | |
270 | adjusted_mode->hsync_start = | |
271 | dev_priv->panel_fixed_mode->hsync_start; | |
272 | adjusted_mode->hsync_end = | |
273 | dev_priv->panel_fixed_mode->hsync_end; | |
274 | adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal; | |
275 | adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay; | |
276 | adjusted_mode->vsync_start = | |
277 | dev_priv->panel_fixed_mode->vsync_start; | |
278 | adjusted_mode->vsync_end = | |
279 | dev_priv->panel_fixed_mode->vsync_end; | |
280 | adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal; | |
281 | adjusted_mode->clock = dev_priv->panel_fixed_mode->clock; | |
282 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
283 | } | |
284 | ||
3fbe18d6 ZY |
285 | /* Make sure pre-965s set dither correctly */ |
286 | if (!IS_I965G(dev)) { | |
287 | if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) | |
288 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; | |
289 | } | |
290 | ||
291 | /* Native modes don't need fitting */ | |
292 | if (adjusted_mode->hdisplay == mode->hdisplay && | |
293 | adjusted_mode->vdisplay == mode->vdisplay) { | |
294 | pfit_pgm_ratios = 0; | |
295 | border = 0; | |
296 | goto out; | |
297 | } | |
298 | ||
8dd81a38 | 299 | /* full screen scale for now */ |
f2b115e6 | 300 | if (IS_IRONLAKE(dev)) |
8dd81a38 ZW |
301 | goto out; |
302 | ||
3fbe18d6 ZY |
303 | /* 965+ wants fuzzy fitting */ |
304 | if (IS_I965G(dev)) | |
305 | pfit_control |= (intel_crtc->pipe << PFIT_PIPE_SHIFT) | | |
306 | PFIT_FILTER_FUZZY; | |
307 | ||
aa0261f2 ZY |
308 | hsync_width = adjusted_mode->crtc_hsync_end - |
309 | adjusted_mode->crtc_hsync_start; | |
310 | vsync_width = adjusted_mode->crtc_vsync_end - | |
311 | adjusted_mode->crtc_vsync_start; | |
312 | hblank_width = adjusted_mode->crtc_hblank_end - | |
313 | adjusted_mode->crtc_hblank_start; | |
314 | vblank_width = adjusted_mode->crtc_vblank_end - | |
315 | adjusted_mode->crtc_vblank_start; | |
3fbe18d6 ZY |
316 | /* |
317 | * Deal with panel fitting options. Figure out how to stretch the | |
318 | * image based on its aspect ratio & the current panel fitting mode. | |
319 | */ | |
320 | panel_ratio = adjusted_mode->hdisplay * PANEL_RATIO_FACTOR / | |
321 | adjusted_mode->vdisplay; | |
322 | desired_ratio = mode->hdisplay * PANEL_RATIO_FACTOR / | |
323 | mode->vdisplay; | |
324 | /* | |
325 | * Enable automatic panel scaling for non-native modes so that they fill | |
326 | * the screen. Should be enabled before the pipe is enabled, according | |
327 | * to register description and PRM. | |
328 | * Change the value here to see the borders for debugging | |
329 | */ | |
f2b115e6 | 330 | if (!IS_IRONLAKE(dev)) { |
8dd81a38 ZW |
331 | I915_WRITE(BCLRPAT_A, 0); |
332 | I915_WRITE(BCLRPAT_B, 0); | |
333 | } | |
3fbe18d6 ZY |
334 | |
335 | switch (lvds_priv->fitting_mode) { | |
53bd8389 | 336 | case DRM_MODE_SCALE_CENTER: |
3fbe18d6 ZY |
337 | /* |
338 | * For centered modes, we have to calculate border widths & | |
339 | * heights and modify the values programmed into the CRTC. | |
340 | */ | |
341 | left_border = (adjusted_mode->hdisplay - mode->hdisplay) / 2; | |
342 | right_border = left_border; | |
343 | if (mode->hdisplay & 1) | |
344 | right_border++; | |
345 | top_border = (adjusted_mode->vdisplay - mode->vdisplay) / 2; | |
346 | bottom_border = top_border; | |
347 | if (mode->vdisplay & 1) | |
348 | bottom_border++; | |
349 | /* Set active & border values */ | |
350 | adjusted_mode->crtc_hdisplay = mode->hdisplay; | |
aa0261f2 ZY |
351 | /* Keep the boder be even */ |
352 | if (right_border & 1) | |
353 | right_border++; | |
354 | /* use the border directly instead of border minuse one */ | |
3fbe18d6 | 355 | adjusted_mode->crtc_hblank_start = mode->hdisplay + |
aa0261f2 ZY |
356 | right_border; |
357 | /* keep the blank width constant */ | |
358 | adjusted_mode->crtc_hblank_end = | |
359 | adjusted_mode->crtc_hblank_start + hblank_width; | |
360 | /* get the hsync pos relative to hblank start */ | |
361 | hsync_pos = (hblank_width - hsync_width) / 2; | |
362 | /* keep the hsync pos be even */ | |
363 | if (hsync_pos & 1) | |
364 | hsync_pos++; | |
3fbe18d6 | 365 | adjusted_mode->crtc_hsync_start = |
aa0261f2 ZY |
366 | adjusted_mode->crtc_hblank_start + hsync_pos; |
367 | /* keep the hsync width constant */ | |
3fbe18d6 | 368 | adjusted_mode->crtc_hsync_end = |
aa0261f2 | 369 | adjusted_mode->crtc_hsync_start + hsync_width; |
3fbe18d6 | 370 | adjusted_mode->crtc_vdisplay = mode->vdisplay; |
aa0261f2 | 371 | /* use the border instead of border minus one */ |
3fbe18d6 | 372 | adjusted_mode->crtc_vblank_start = mode->vdisplay + |
aa0261f2 ZY |
373 | bottom_border; |
374 | /* keep the vblank width constant */ | |
375 | adjusted_mode->crtc_vblank_end = | |
376 | adjusted_mode->crtc_vblank_start + vblank_width; | |
377 | /* get the vsync start postion relative to vblank start */ | |
378 | vsync_pos = (vblank_width - vsync_width) / 2; | |
3fbe18d6 | 379 | adjusted_mode->crtc_vsync_start = |
aa0261f2 ZY |
380 | adjusted_mode->crtc_vblank_start + vsync_pos; |
381 | /* keep the vsync width constant */ | |
3fbe18d6 | 382 | adjusted_mode->crtc_vsync_end = |
a3e17eb8 | 383 | adjusted_mode->crtc_vsync_start + vsync_width; |
3fbe18d6 ZY |
384 | border = 1; |
385 | break; | |
386 | case DRM_MODE_SCALE_ASPECT: | |
387 | /* Scale but preserve the spect ratio */ | |
388 | pfit_control |= PFIT_ENABLE; | |
389 | if (IS_I965G(dev)) { | |
390 | /* 965+ is easy, it does everything in hw */ | |
391 | if (panel_ratio > desired_ratio) | |
392 | pfit_control |= PFIT_SCALING_PILLAR; | |
393 | else if (panel_ratio < desired_ratio) | |
394 | pfit_control |= PFIT_SCALING_LETTER; | |
395 | else | |
396 | pfit_control |= PFIT_SCALING_AUTO; | |
397 | } else { | |
398 | /* | |
399 | * For earlier chips we have to calculate the scaling | |
400 | * ratio by hand and program it into the | |
401 | * PFIT_PGM_RATIO register | |
402 | */ | |
403 | u32 horiz_bits, vert_bits, bits = 12; | |
404 | horiz_ratio = mode->hdisplay * PANEL_RATIO_FACTOR/ | |
405 | adjusted_mode->hdisplay; | |
406 | vert_ratio = mode->vdisplay * PANEL_RATIO_FACTOR/ | |
407 | adjusted_mode->vdisplay; | |
408 | horiz_scale = adjusted_mode->hdisplay * | |
409 | PANEL_RATIO_FACTOR / mode->hdisplay; | |
410 | vert_scale = adjusted_mode->vdisplay * | |
411 | PANEL_RATIO_FACTOR / mode->vdisplay; | |
412 | ||
413 | /* retain aspect ratio */ | |
414 | if (panel_ratio > desired_ratio) { /* Pillar */ | |
415 | u32 scaled_width; | |
416 | scaled_width = mode->hdisplay * vert_scale / | |
417 | PANEL_RATIO_FACTOR; | |
418 | horiz_ratio = vert_ratio; | |
419 | pfit_control |= (VERT_AUTO_SCALE | | |
420 | VERT_INTERP_BILINEAR | | |
421 | HORIZ_INTERP_BILINEAR); | |
422 | /* Pillar will have left/right borders */ | |
423 | left_border = (adjusted_mode->hdisplay - | |
424 | scaled_width) / 2; | |
425 | right_border = left_border; | |
426 | if (mode->hdisplay & 1) /* odd resolutions */ | |
427 | right_border++; | |
aa0261f2 ZY |
428 | /* keep the border be even */ |
429 | if (right_border & 1) | |
430 | right_border++; | |
3fbe18d6 | 431 | adjusted_mode->crtc_hdisplay = scaled_width; |
aa0261f2 | 432 | /* use border instead of border minus one */ |
3fbe18d6 | 433 | adjusted_mode->crtc_hblank_start = |
aa0261f2 ZY |
434 | scaled_width + right_border; |
435 | /* keep the hblank width constant */ | |
3fbe18d6 | 436 | adjusted_mode->crtc_hblank_end = |
aa0261f2 ZY |
437 | adjusted_mode->crtc_hblank_start + |
438 | hblank_width; | |
439 | /* | |
440 | * get the hsync start pos relative to | |
441 | * hblank start | |
442 | */ | |
443 | hsync_pos = (hblank_width - hsync_width) / 2; | |
444 | /* keep the hsync_pos be even */ | |
445 | if (hsync_pos & 1) | |
446 | hsync_pos++; | |
3fbe18d6 | 447 | adjusted_mode->crtc_hsync_start = |
aa0261f2 ZY |
448 | adjusted_mode->crtc_hblank_start + |
449 | hsync_pos; | |
450 | /* keept hsync width constant */ | |
3fbe18d6 | 451 | adjusted_mode->crtc_hsync_end = |
aa0261f2 ZY |
452 | adjusted_mode->crtc_hsync_start + |
453 | hsync_width; | |
3fbe18d6 ZY |
454 | border = 1; |
455 | } else if (panel_ratio < desired_ratio) { /* letter */ | |
456 | u32 scaled_height = mode->vdisplay * | |
457 | horiz_scale / PANEL_RATIO_FACTOR; | |
458 | vert_ratio = horiz_ratio; | |
459 | pfit_control |= (HORIZ_AUTO_SCALE | | |
460 | VERT_INTERP_BILINEAR | | |
461 | HORIZ_INTERP_BILINEAR); | |
462 | /* Letterbox will have top/bottom border */ | |
463 | top_border = (adjusted_mode->vdisplay - | |
464 | scaled_height) / 2; | |
465 | bottom_border = top_border; | |
466 | if (mode->vdisplay & 1) | |
467 | bottom_border++; | |
468 | adjusted_mode->crtc_vdisplay = scaled_height; | |
aa0261f2 | 469 | /* use border instead of border minus one */ |
3fbe18d6 | 470 | adjusted_mode->crtc_vblank_start = |
aa0261f2 ZY |
471 | scaled_height + bottom_border; |
472 | /* keep the vblank width constant */ | |
3fbe18d6 | 473 | adjusted_mode->crtc_vblank_end = |
aa0261f2 ZY |
474 | adjusted_mode->crtc_vblank_start + |
475 | vblank_width; | |
476 | /* | |
477 | * get the vsync start pos relative to | |
478 | * vblank start | |
479 | */ | |
480 | vsync_pos = (vblank_width - vsync_width) / 2; | |
3fbe18d6 | 481 | adjusted_mode->crtc_vsync_start = |
aa0261f2 ZY |
482 | adjusted_mode->crtc_vblank_start + |
483 | vsync_pos; | |
484 | /* keep the vsync width constant */ | |
3fbe18d6 | 485 | adjusted_mode->crtc_vsync_end = |
aa0261f2 ZY |
486 | adjusted_mode->crtc_vsync_start + |
487 | vsync_width; | |
3fbe18d6 ZY |
488 | border = 1; |
489 | } else { | |
490 | /* Aspects match, Let hw scale both directions */ | |
491 | pfit_control |= (VERT_AUTO_SCALE | | |
492 | HORIZ_AUTO_SCALE | | |
493 | VERT_INTERP_BILINEAR | | |
494 | HORIZ_INTERP_BILINEAR); | |
495 | } | |
496 | horiz_bits = (1 << bits) * horiz_ratio / | |
497 | PANEL_RATIO_FACTOR; | |
498 | vert_bits = (1 << bits) * vert_ratio / | |
499 | PANEL_RATIO_FACTOR; | |
500 | pfit_pgm_ratios = | |
501 | ((vert_bits << PFIT_VERT_SCALE_SHIFT) & | |
502 | PFIT_VERT_SCALE_MASK) | | |
503 | ((horiz_bits << PFIT_HORIZ_SCALE_SHIFT) & | |
504 | PFIT_HORIZ_SCALE_MASK); | |
505 | } | |
506 | break; | |
507 | ||
508 | case DRM_MODE_SCALE_FULLSCREEN: | |
509 | /* | |
510 | * Full scaling, even if it changes the aspect ratio. | |
511 | * Fortunately this is all done for us in hw. | |
512 | */ | |
513 | pfit_control |= PFIT_ENABLE; | |
514 | if (IS_I965G(dev)) | |
515 | pfit_control |= PFIT_SCALING_AUTO; | |
516 | else | |
517 | pfit_control |= (VERT_AUTO_SCALE | HORIZ_AUTO_SCALE | | |
518 | VERT_INTERP_BILINEAR | | |
519 | HORIZ_INTERP_BILINEAR); | |
520 | break; | |
521 | default: | |
522 | break; | |
523 | } | |
524 | ||
525 | out: | |
526 | lvds_priv->pfit_control = pfit_control; | |
527 | lvds_priv->pfit_pgm_ratios = pfit_pgm_ratios; | |
a3e17eb8 ZY |
528 | /* |
529 | * When there exists the border, it means that the LVDS_BORDR | |
530 | * should be enabled. | |
531 | */ | |
532 | if (border) | |
533 | dev_priv->lvds_border_bits |= LVDS_BORDER_ENABLE; | |
534 | else | |
535 | dev_priv->lvds_border_bits &= ~(LVDS_BORDER_ENABLE); | |
79e53945 JB |
536 | /* |
537 | * XXX: It would be nice to support lower refresh rates on the | |
538 | * panels to reduce power consumption, and perhaps match the | |
539 | * user's requested refresh rate. | |
540 | */ | |
541 | ||
542 | return true; | |
543 | } | |
544 | ||
545 | static void intel_lvds_prepare(struct drm_encoder *encoder) | |
546 | { | |
547 | struct drm_device *dev = encoder->dev; | |
548 | struct drm_i915_private *dev_priv = dev->dev_private; | |
541998a1 | 549 | u32 reg; |
79e53945 | 550 | |
f2b115e6 | 551 | if (IS_IRONLAKE(dev)) |
541998a1 ZW |
552 | reg = BLC_PWM_CPU_CTL; |
553 | else | |
554 | reg = BLC_PWM_CTL; | |
79e53945 | 555 | |
541998a1 | 556 | dev_priv->saveBLC_PWM_CTL = I915_READ(reg); |
79e53945 JB |
557 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
558 | BACKLIGHT_DUTY_CYCLE_MASK); | |
559 | ||
560 | intel_lvds_set_power(dev, false); | |
561 | } | |
562 | ||
563 | static void intel_lvds_commit( struct drm_encoder *encoder) | |
564 | { | |
565 | struct drm_device *dev = encoder->dev; | |
566 | struct drm_i915_private *dev_priv = dev->dev_private; | |
567 | ||
568 | if (dev_priv->backlight_duty_cycle == 0) | |
569 | dev_priv->backlight_duty_cycle = | |
570 | intel_lvds_get_max_backlight(dev); | |
571 | ||
572 | intel_lvds_set_power(dev, true); | |
573 | } | |
574 | ||
575 | static void intel_lvds_mode_set(struct drm_encoder *encoder, | |
576 | struct drm_display_mode *mode, | |
577 | struct drm_display_mode *adjusted_mode) | |
578 | { | |
579 | struct drm_device *dev = encoder->dev; | |
580 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3fbe18d6 ZY |
581 | struct intel_output *intel_output = enc_to_intel_output(encoder); |
582 | struct intel_lvds_priv *lvds_priv = intel_output->dev_priv; | |
79e53945 JB |
583 | |
584 | /* | |
585 | * The LVDS pin pair will already have been turned on in the | |
586 | * intel_crtc_mode_set since it has a large impact on the DPLL | |
587 | * settings. | |
588 | */ | |
589 | ||
f2b115e6 | 590 | if (IS_IRONLAKE(dev)) |
541998a1 ZW |
591 | return; |
592 | ||
79e53945 JB |
593 | /* |
594 | * Enable automatic panel scaling so that non-native modes fill the | |
595 | * screen. Should be enabled before the pipe is enabled, according to | |
596 | * register description and PRM. | |
597 | */ | |
3fbe18d6 ZY |
598 | I915_WRITE(PFIT_PGM_RATIOS, lvds_priv->pfit_pgm_ratios); |
599 | I915_WRITE(PFIT_CONTROL, lvds_priv->pfit_control); | |
79e53945 JB |
600 | } |
601 | ||
7121413f JB |
602 | /* Some lid devices report incorrect lid status, assume they're connected */ |
603 | static const struct dmi_system_id bad_lid_status[] = { | |
40f33a92 ZY |
604 | { |
605 | .ident = "Compaq nx9020", | |
606 | .matches = { | |
607 | DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), | |
608 | DMI_MATCH(DMI_BOARD_NAME, "3084"), | |
609 | }, | |
610 | }, | |
611 | { | |
612 | .ident = "Samsung SX20S", | |
613 | .matches = { | |
f034b12d | 614 | DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"), |
40f33a92 ZY |
615 | DMI_MATCH(DMI_BOARD_NAME, "SX20S"), |
616 | }, | |
617 | }, | |
7121413f JB |
618 | { |
619 | .ident = "Aspire One", | |
620 | .matches = { | |
621 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
622 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire one"), | |
623 | }, | |
624 | }, | |
67026e03 TM |
625 | { |
626 | .ident = "Aspire 1810T", | |
627 | .matches = { | |
628 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
629 | DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1810T"), | |
630 | }, | |
631 | }, | |
a3cb5195 ZY |
632 | { |
633 | .ident = "PC-81005", | |
634 | .matches = { | |
635 | DMI_MATCH(DMI_SYS_VENDOR, "MALATA"), | |
636 | DMI_MATCH(DMI_PRODUCT_NAME, "PC-81005"), | |
637 | }, | |
638 | }, | |
1379d2fe ZR |
639 | { |
640 | .ident = "Clevo M5x0N", | |
641 | .matches = { | |
642 | DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."), | |
643 | DMI_MATCH(DMI_BOARD_NAME, "M5x0N"), | |
644 | }, | |
645 | }, | |
7121413f JB |
646 | { } |
647 | }; | |
648 | ||
79e53945 JB |
649 | /** |
650 | * Detect the LVDS connection. | |
651 | * | |
b42d4c5c JB |
652 | * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means |
653 | * connected and closed means disconnected. We also send hotplug events as | |
654 | * needed, using lid status notification from the input layer. | |
79e53945 JB |
655 | */ |
656 | static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) | |
657 | { | |
7b9c5abe | 658 | struct drm_device *dev = connector->dev; |
b42d4c5c JB |
659 | enum drm_connector_status status = connector_status_connected; |
660 | ||
7b9c5abe JB |
661 | /* ACPI lid methods were generally unreliable in this generation, so |
662 | * don't even bother. | |
663 | */ | |
bad720ff | 664 | if (IS_GEN2(dev)) |
7b9c5abe JB |
665 | return connector_status_connected; |
666 | ||
67026e03 | 667 | if (!dmi_check_system(bad_lid_status) && !acpi_lid_open()) |
b42d4c5c JB |
668 | status = connector_status_disconnected; |
669 | ||
670 | return status; | |
79e53945 JB |
671 | } |
672 | ||
673 | /** | |
674 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. | |
675 | */ | |
676 | static int intel_lvds_get_modes(struct drm_connector *connector) | |
677 | { | |
678 | struct drm_device *dev = connector->dev; | |
679 | struct intel_output *intel_output = to_intel_output(connector); | |
680 | struct drm_i915_private *dev_priv = dev->dev_private; | |
681 | int ret = 0; | |
682 | ||
683 | ret = intel_ddc_get_modes(intel_output); | |
684 | ||
685 | if (ret) | |
686 | return ret; | |
687 | ||
688 | /* Didn't get an EDID, so | |
689 | * Set wide sync ranges so we get all modes | |
690 | * handed to valid_mode for checking | |
691 | */ | |
692 | connector->display_info.min_vfreq = 0; | |
693 | connector->display_info.max_vfreq = 200; | |
694 | connector->display_info.min_hfreq = 0; | |
695 | connector->display_info.max_hfreq = 200; | |
696 | ||
697 | if (dev_priv->panel_fixed_mode != NULL) { | |
698 | struct drm_display_mode *mode; | |
699 | ||
79e53945 JB |
700 | mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); |
701 | drm_mode_probed_add(connector, mode); | |
79e53945 JB |
702 | |
703 | return 1; | |
704 | } | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
c9354c85 LT |
709 | /* |
710 | * Lid events. Note the use of 'modeset_on_lid': | |
711 | * - we set it on lid close, and reset it on open | |
712 | * - we use it as a "only once" bit (ie we ignore | |
713 | * duplicate events where it was already properly | |
714 | * set/reset) | |
715 | * - the suspend/resume paths will also set it to | |
716 | * zero, since they restore the mode ("lid open"). | |
717 | */ | |
c1c7af60 JB |
718 | static int intel_lid_notify(struct notifier_block *nb, unsigned long val, |
719 | void *unused) | |
720 | { | |
721 | struct drm_i915_private *dev_priv = | |
722 | container_of(nb, struct drm_i915_private, lid_notifier); | |
723 | struct drm_device *dev = dev_priv->dev; | |
a2565377 | 724 | struct drm_connector *connector = dev_priv->int_lvds_connector; |
c1c7af60 | 725 | |
a2565377 ZY |
726 | /* |
727 | * check and update the status of LVDS connector after receiving | |
728 | * the LID nofication event. | |
729 | */ | |
730 | if (connector) | |
731 | connector->status = connector->funcs->detect(connector); | |
c9354c85 LT |
732 | if (!acpi_lid_open()) { |
733 | dev_priv->modeset_on_lid = 1; | |
734 | return NOTIFY_OK; | |
06891e27 | 735 | } |
c1c7af60 | 736 | |
c9354c85 LT |
737 | if (!dev_priv->modeset_on_lid) |
738 | return NOTIFY_OK; | |
739 | ||
740 | dev_priv->modeset_on_lid = 0; | |
741 | ||
742 | mutex_lock(&dev->mode_config.mutex); | |
743 | drm_helper_resume_force_mode(dev); | |
744 | mutex_unlock(&dev->mode_config.mutex); | |
06324194 | 745 | |
c1c7af60 JB |
746 | return NOTIFY_OK; |
747 | } | |
748 | ||
79e53945 JB |
749 | /** |
750 | * intel_lvds_destroy - unregister and free LVDS structures | |
751 | * @connector: connector to free | |
752 | * | |
753 | * Unregister the DDC bus for this connector then free the driver private | |
754 | * structure. | |
755 | */ | |
756 | static void intel_lvds_destroy(struct drm_connector *connector) | |
757 | { | |
c1c7af60 | 758 | struct drm_device *dev = connector->dev; |
79e53945 | 759 | struct intel_output *intel_output = to_intel_output(connector); |
c1c7af60 | 760 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 JB |
761 | |
762 | if (intel_output->ddc_bus) | |
763 | intel_i2c_destroy(intel_output->ddc_bus); | |
c1c7af60 JB |
764 | if (dev_priv->lid_notifier.notifier_call) |
765 | acpi_lid_notifier_unregister(&dev_priv->lid_notifier); | |
79e53945 JB |
766 | drm_sysfs_connector_remove(connector); |
767 | drm_connector_cleanup(connector); | |
768 | kfree(connector); | |
769 | } | |
770 | ||
335041ed JB |
771 | static int intel_lvds_set_property(struct drm_connector *connector, |
772 | struct drm_property *property, | |
773 | uint64_t value) | |
774 | { | |
3fbe18d6 ZY |
775 | struct drm_device *dev = connector->dev; |
776 | struct intel_output *intel_output = | |
777 | to_intel_output(connector); | |
778 | ||
779 | if (property == dev->mode_config.scaling_mode_property && | |
780 | connector->encoder) { | |
781 | struct drm_crtc *crtc = connector->encoder->crtc; | |
782 | struct intel_lvds_priv *lvds_priv = intel_output->dev_priv; | |
53bd8389 JB |
783 | if (value == DRM_MODE_SCALE_NONE) { |
784 | DRM_DEBUG_KMS("no scaling not supported\n"); | |
3fbe18d6 ZY |
785 | return 0; |
786 | } | |
787 | if (lvds_priv->fitting_mode == value) { | |
788 | /* the LVDS scaling property is not changed */ | |
789 | return 0; | |
790 | } | |
791 | lvds_priv->fitting_mode = value; | |
792 | if (crtc && crtc->enabled) { | |
793 | /* | |
794 | * If the CRTC is enabled, the display will be changed | |
795 | * according to the new panel fitting mode. | |
796 | */ | |
797 | drm_crtc_helper_set_mode(crtc, &crtc->mode, | |
798 | crtc->x, crtc->y, crtc->fb); | |
799 | } | |
800 | } | |
801 | ||
335041ed JB |
802 | return 0; |
803 | } | |
804 | ||
79e53945 JB |
805 | static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
806 | .dpms = intel_lvds_dpms, | |
807 | .mode_fixup = intel_lvds_mode_fixup, | |
808 | .prepare = intel_lvds_prepare, | |
809 | .mode_set = intel_lvds_mode_set, | |
810 | .commit = intel_lvds_commit, | |
811 | }; | |
812 | ||
813 | static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { | |
814 | .get_modes = intel_lvds_get_modes, | |
815 | .mode_valid = intel_lvds_mode_valid, | |
816 | .best_encoder = intel_best_encoder, | |
817 | }; | |
818 | ||
819 | static const struct drm_connector_funcs intel_lvds_connector_funcs = { | |
c9fb15f6 | 820 | .dpms = drm_helper_connector_dpms, |
79e53945 JB |
821 | .save = intel_lvds_save, |
822 | .restore = intel_lvds_restore, | |
823 | .detect = intel_lvds_detect, | |
824 | .fill_modes = drm_helper_probe_single_connector_modes, | |
335041ed | 825 | .set_property = intel_lvds_set_property, |
79e53945 JB |
826 | .destroy = intel_lvds_destroy, |
827 | }; | |
828 | ||
829 | ||
830 | static void intel_lvds_enc_destroy(struct drm_encoder *encoder) | |
831 | { | |
832 | drm_encoder_cleanup(encoder); | |
833 | } | |
834 | ||
835 | static const struct drm_encoder_funcs intel_lvds_enc_funcs = { | |
836 | .destroy = intel_lvds_enc_destroy, | |
837 | }; | |
838 | ||
425d244c JW |
839 | static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
840 | { | |
8a4c47f3 | 841 | DRM_DEBUG_KMS("Skipping LVDS initialization for %s\n", id->ident); |
425d244c JW |
842 | return 1; |
843 | } | |
79e53945 | 844 | |
425d244c | 845 | /* These systems claim to have LVDS, but really don't */ |
93c05f22 | 846 | static const struct dmi_system_id intel_no_lvds[] = { |
425d244c JW |
847 | { |
848 | .callback = intel_no_lvds_dmi_callback, | |
849 | .ident = "Apple Mac Mini (Core series)", | |
850 | .matches = { | |
98acd46f | 851 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
852 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), |
853 | }, | |
854 | }, | |
855 | { | |
856 | .callback = intel_no_lvds_dmi_callback, | |
857 | .ident = "Apple Mac Mini (Core 2 series)", | |
858 | .matches = { | |
98acd46f | 859 | DMI_MATCH(DMI_SYS_VENDOR, "Apple"), |
425d244c JW |
860 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), |
861 | }, | |
862 | }, | |
863 | { | |
864 | .callback = intel_no_lvds_dmi_callback, | |
865 | .ident = "MSI IM-945GSE-A", | |
866 | .matches = { | |
867 | DMI_MATCH(DMI_SYS_VENDOR, "MSI"), | |
868 | DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), | |
869 | }, | |
870 | }, | |
871 | { | |
872 | .callback = intel_no_lvds_dmi_callback, | |
873 | .ident = "Dell Studio Hybrid", | |
874 | .matches = { | |
875 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
876 | DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), | |
877 | }, | |
878 | }, | |
70aa96ca JW |
879 | { |
880 | .callback = intel_no_lvds_dmi_callback, | |
881 | .ident = "AOpen Mini PC", | |
882 | .matches = { | |
883 | DMI_MATCH(DMI_SYS_VENDOR, "AOpen"), | |
884 | DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"), | |
885 | }, | |
886 | }, | |
ed8c754b TV |
887 | { |
888 | .callback = intel_no_lvds_dmi_callback, | |
889 | .ident = "AOpen Mini PC MP915", | |
890 | .matches = { | |
891 | DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"), | |
892 | DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"), | |
893 | }, | |
894 | }, | |
fa0864b2 MC |
895 | { |
896 | .callback = intel_no_lvds_dmi_callback, | |
897 | .ident = "Aopen i945GTt-VFA", | |
898 | .matches = { | |
899 | DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"), | |
900 | }, | |
901 | }, | |
425d244c JW |
902 | |
903 | { } /* terminating entry */ | |
904 | }; | |
79e53945 | 905 | |
18f9ed12 ZY |
906 | /** |
907 | * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID | |
908 | * @dev: drm device | |
909 | * @connector: LVDS connector | |
910 | * | |
911 | * Find the reduced downclock for LVDS in EDID. | |
912 | */ | |
913 | static void intel_find_lvds_downclock(struct drm_device *dev, | |
914 | struct drm_connector *connector) | |
915 | { | |
916 | struct drm_i915_private *dev_priv = dev->dev_private; | |
917 | struct drm_display_mode *scan, *panel_fixed_mode; | |
918 | int temp_downclock; | |
919 | ||
920 | panel_fixed_mode = dev_priv->panel_fixed_mode; | |
921 | temp_downclock = panel_fixed_mode->clock; | |
922 | ||
923 | mutex_lock(&dev->mode_config.mutex); | |
924 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
925 | /* | |
926 | * If one mode has the same resolution with the fixed_panel | |
927 | * mode while they have the different refresh rate, it means | |
928 | * that the reduced downclock is found for the LVDS. In such | |
929 | * case we can set the different FPx0/1 to dynamically select | |
930 | * between low and high frequency. | |
931 | */ | |
932 | if (scan->hdisplay == panel_fixed_mode->hdisplay && | |
933 | scan->hsync_start == panel_fixed_mode->hsync_start && | |
934 | scan->hsync_end == panel_fixed_mode->hsync_end && | |
935 | scan->htotal == panel_fixed_mode->htotal && | |
936 | scan->vdisplay == panel_fixed_mode->vdisplay && | |
937 | scan->vsync_start == panel_fixed_mode->vsync_start && | |
938 | scan->vsync_end == panel_fixed_mode->vsync_end && | |
939 | scan->vtotal == panel_fixed_mode->vtotal) { | |
940 | if (scan->clock < temp_downclock) { | |
941 | /* | |
942 | * The downclock is already found. But we | |
943 | * expect to find the lower downclock. | |
944 | */ | |
945 | temp_downclock = scan->clock; | |
946 | } | |
947 | } | |
948 | } | |
949 | mutex_unlock(&dev->mode_config.mutex); | |
33814341 JB |
950 | if (temp_downclock < panel_fixed_mode->clock && |
951 | i915_lvds_downclock) { | |
18f9ed12 ZY |
952 | /* We found the downclock for LVDS. */ |
953 | dev_priv->lvds_downclock_avail = 1; | |
954 | dev_priv->lvds_downclock = temp_downclock; | |
955 | DRM_DEBUG_KMS("LVDS downclock is found in EDID. " | |
956 | "Normal clock %dKhz, downclock %dKhz\n", | |
957 | panel_fixed_mode->clock, temp_downclock); | |
958 | } | |
959 | return; | |
960 | } | |
961 | ||
7cf4f69d ZY |
962 | /* |
963 | * Enumerate the child dev array parsed from VBT to check whether | |
964 | * the LVDS is present. | |
965 | * If it is present, return 1. | |
966 | * If it is not present, return false. | |
967 | * If no child dev is parsed from VBT, it assumes that the LVDS is present. | |
968 | * Note: The addin_offset should also be checked for LVDS panel. | |
969 | * Only when it is non-zero, it is assumed that it is present. | |
970 | */ | |
6e36595a | 971 | static int lvds_is_present_in_vbt(struct drm_device *dev) |
7cf4f69d ZY |
972 | { |
973 | struct drm_i915_private *dev_priv = dev->dev_private; | |
974 | struct child_device_config *p_child; | |
975 | int i, ret; | |
976 | ||
977 | if (!dev_priv->child_dev_num) | |
978 | return 1; | |
979 | ||
980 | ret = 0; | |
981 | for (i = 0; i < dev_priv->child_dev_num; i++) { | |
982 | p_child = dev_priv->child_dev + i; | |
983 | /* | |
984 | * If the device type is not LFP, continue. | |
985 | * If the device type is 0x22, it is also regarded as LFP. | |
986 | */ | |
987 | if (p_child->device_type != DEVICE_TYPE_INT_LFP && | |
988 | p_child->device_type != DEVICE_TYPE_LFP) | |
989 | continue; | |
990 | ||
991 | /* The addin_offset should be checked. Only when it is | |
992 | * non-zero, it is regarded as present. | |
993 | */ | |
994 | if (p_child->addin_offset) { | |
995 | ret = 1; | |
996 | break; | |
997 | } | |
998 | } | |
999 | return ret; | |
1000 | } | |
1001 | ||
79e53945 JB |
1002 | /** |
1003 | * intel_lvds_init - setup LVDS connectors on this device | |
1004 | * @dev: drm device | |
1005 | * | |
1006 | * Create the connector, register the LVDS DDC bus, and try to figure out what | |
1007 | * modes we can display on the LVDS panel (if present). | |
1008 | */ | |
1009 | void intel_lvds_init(struct drm_device *dev) | |
1010 | { | |
1011 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1012 | struct intel_output *intel_output; | |
1013 | struct drm_connector *connector; | |
1014 | struct drm_encoder *encoder; | |
1015 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ | |
1016 | struct drm_crtc *crtc; | |
3fbe18d6 | 1017 | struct intel_lvds_priv *lvds_priv; |
79e53945 | 1018 | u32 lvds; |
541998a1 | 1019 | int pipe, gpio = GPIOC; |
79e53945 | 1020 | |
425d244c JW |
1021 | /* Skip init on machines we know falsely report LVDS */ |
1022 | if (dmi_check_system(intel_no_lvds)) | |
565dcd46 | 1023 | return; |
565dcd46 | 1024 | |
11ba1592 MG |
1025 | if (!lvds_is_present_in_vbt(dev)) { |
1026 | DRM_DEBUG_KMS("LVDS is not present in VBT\n"); | |
e99da35f | 1027 | return; |
38b3037e | 1028 | } |
e99da35f | 1029 | |
f2b115e6 | 1030 | if (IS_IRONLAKE(dev)) { |
541998a1 ZW |
1031 | if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) |
1032 | return; | |
32f9d658 | 1033 | if (dev_priv->edp_support) { |
28c97730 | 1034 | DRM_DEBUG_KMS("disable LVDS for eDP support\n"); |
32f9d658 ZW |
1035 | return; |
1036 | } | |
541998a1 ZW |
1037 | gpio = PCH_GPIOC; |
1038 | } | |
1039 | ||
3fbe18d6 ZY |
1040 | intel_output = kzalloc(sizeof(struct intel_output) + |
1041 | sizeof(struct intel_lvds_priv), GFP_KERNEL); | |
79e53945 JB |
1042 | if (!intel_output) { |
1043 | return; | |
1044 | } | |
1045 | ||
1046 | connector = &intel_output->base; | |
1047 | encoder = &intel_output->enc; | |
1048 | drm_connector_init(dev, &intel_output->base, &intel_lvds_connector_funcs, | |
1049 | DRM_MODE_CONNECTOR_LVDS); | |
1050 | ||
1051 | drm_encoder_init(dev, &intel_output->enc, &intel_lvds_enc_funcs, | |
1052 | DRM_MODE_ENCODER_LVDS); | |
1053 | ||
1054 | drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc); | |
1055 | intel_output->type = INTEL_OUTPUT_LVDS; | |
1056 | ||
f8aed700 ML |
1057 | intel_output->clone_mask = (1 << INTEL_LVDS_CLONE_BIT); |
1058 | intel_output->crtc_mask = (1 << 1); | |
79e53945 JB |
1059 | drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); |
1060 | drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); | |
1061 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
1062 | connector->interlace_allowed = false; | |
1063 | connector->doublescan_allowed = false; | |
1064 | ||
3fbe18d6 ZY |
1065 | lvds_priv = (struct intel_lvds_priv *)(intel_output + 1); |
1066 | intel_output->dev_priv = lvds_priv; | |
1067 | /* create the scaling mode property */ | |
1068 | drm_mode_create_scaling_mode_property(dev); | |
1069 | /* | |
1070 | * the initial panel fitting mode will be FULL_SCREEN. | |
1071 | */ | |
79e53945 | 1072 | |
3fbe18d6 ZY |
1073 | drm_connector_attach_property(&intel_output->base, |
1074 | dev->mode_config.scaling_mode_property, | |
1075 | DRM_MODE_SCALE_FULLSCREEN); | |
1076 | lvds_priv->fitting_mode = DRM_MODE_SCALE_FULLSCREEN; | |
79e53945 JB |
1077 | /* |
1078 | * LVDS discovery: | |
1079 | * 1) check for EDID on DDC | |
1080 | * 2) check for VBT data | |
1081 | * 3) check to see if LVDS is already on | |
1082 | * if none of the above, no panel | |
1083 | * 4) make sure lid is open | |
1084 | * if closed, act like it's not there for now | |
1085 | */ | |
1086 | ||
1087 | /* Set up the DDC bus. */ | |
541998a1 | 1088 | intel_output->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C"); |
79e53945 JB |
1089 | if (!intel_output->ddc_bus) { |
1090 | dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " | |
1091 | "failed.\n"); | |
1092 | goto failed; | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * Attempt to get the fixed panel mode from DDC. Assume that the | |
1097 | * preferred mode is the right one. | |
1098 | */ | |
1099 | intel_ddc_get_modes(intel_output); | |
1100 | ||
1101 | list_for_each_entry(scan, &connector->probed_modes, head) { | |
1102 | mutex_lock(&dev->mode_config.mutex); | |
1103 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { | |
1104 | dev_priv->panel_fixed_mode = | |
1105 | drm_mode_duplicate(dev, scan); | |
1106 | mutex_unlock(&dev->mode_config.mutex); | |
18f9ed12 | 1107 | intel_find_lvds_downclock(dev, connector); |
565dcd46 | 1108 | goto out; |
79e53945 JB |
1109 | } |
1110 | mutex_unlock(&dev->mode_config.mutex); | |
1111 | } | |
1112 | ||
1113 | /* Failed to get EDID, what about VBT? */ | |
88631706 | 1114 | if (dev_priv->lfp_lvds_vbt_mode) { |
79e53945 JB |
1115 | mutex_lock(&dev->mode_config.mutex); |
1116 | dev_priv->panel_fixed_mode = | |
88631706 | 1117 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
79e53945 | 1118 | mutex_unlock(&dev->mode_config.mutex); |
e285f3cd JB |
1119 | if (dev_priv->panel_fixed_mode) { |
1120 | dev_priv->panel_fixed_mode->type |= | |
1121 | DRM_MODE_TYPE_PREFERRED; | |
e285f3cd JB |
1122 | goto out; |
1123 | } | |
79e53945 JB |
1124 | } |
1125 | ||
1126 | /* | |
1127 | * If we didn't get EDID, try checking if the panel is already turned | |
1128 | * on. If so, assume that whatever is currently programmed is the | |
1129 | * correct mode. | |
1130 | */ | |
541998a1 | 1131 | |
f2b115e6 AJ |
1132 | /* Ironlake: FIXME if still fail, not try pipe mode now */ |
1133 | if (IS_IRONLAKE(dev)) | |
541998a1 ZW |
1134 | goto failed; |
1135 | ||
79e53945 JB |
1136 | lvds = I915_READ(LVDS); |
1137 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; | |
1138 | crtc = intel_get_crtc_from_pipe(dev, pipe); | |
1139 | ||
1140 | if (crtc && (lvds & LVDS_PORT_EN)) { | |
1141 | dev_priv->panel_fixed_mode = intel_crtc_mode_get(dev, crtc); | |
1142 | if (dev_priv->panel_fixed_mode) { | |
1143 | dev_priv->panel_fixed_mode->type |= | |
1144 | DRM_MODE_TYPE_PREFERRED; | |
565dcd46 | 1145 | goto out; |
79e53945 JB |
1146 | } |
1147 | } | |
1148 | ||
1149 | /* If we still don't have a mode after all that, give up. */ | |
1150 | if (!dev_priv->panel_fixed_mode) | |
1151 | goto failed; | |
1152 | ||
79e53945 | 1153 | out: |
f2b115e6 | 1154 | if (IS_IRONLAKE(dev)) { |
541998a1 ZW |
1155 | u32 pwm; |
1156 | /* make sure PWM is enabled */ | |
1157 | pwm = I915_READ(BLC_PWM_CPU_CTL2); | |
1158 | pwm |= (PWM_ENABLE | PWM_PIPE_B); | |
1159 | I915_WRITE(BLC_PWM_CPU_CTL2, pwm); | |
1160 | ||
1161 | pwm = I915_READ(BLC_PWM_PCH_CTL1); | |
1162 | pwm |= PWM_PCH_ENABLE; | |
1163 | I915_WRITE(BLC_PWM_PCH_CTL1, pwm); | |
1164 | } | |
c1c7af60 JB |
1165 | dev_priv->lid_notifier.notifier_call = intel_lid_notify; |
1166 | if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) { | |
28c97730 | 1167 | DRM_DEBUG_KMS("lid notifier registration failed\n"); |
c1c7af60 JB |
1168 | dev_priv->lid_notifier.notifier_call = NULL; |
1169 | } | |
a2565377 ZY |
1170 | /* keep the LVDS connector */ |
1171 | dev_priv->int_lvds_connector = connector; | |
79e53945 JB |
1172 | drm_sysfs_connector_add(connector); |
1173 | return; | |
1174 | ||
1175 | failed: | |
8a4c47f3 | 1176 | DRM_DEBUG_KMS("No LVDS modes found, disabling.\n"); |
79e53945 JB |
1177 | if (intel_output->ddc_bus) |
1178 | intel_i2c_destroy(intel_output->ddc_bus); | |
1179 | drm_connector_cleanup(connector); | |
1991bdfa | 1180 | drm_encoder_cleanup(encoder); |
3fbe18d6 | 1181 | kfree(intel_output); |
79e53945 | 1182 | } |