2 * Copyright © 2006-2007 Intel Corporation
3 * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
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:
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
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.
25 * Eric Anholt <eric@anholt.net>
26 * Dave Airlie <airlied@linux.ie>
27 * Jesse Barnes <jesse.barnes@intel.com>
30 #include <linux/dmi.h>
31 #include <linux/i2c.h>
36 #include "intel_drv.h"
39 #include <linux/acpi.h>
41 /* Private structure for the integrated LVDS support */
42 struct intel_lvds_priv
{
49 * Sets the backlight level.
51 * \param level backlight level, from 0 to intel_lvds_get_max_backlight().
53 static void intel_lvds_set_backlight(struct drm_device
*dev
, int level
)
55 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
59 reg
= BLC_PWM_CPU_CTL
;
63 blc_pwm_ctl
= I915_READ(reg
) & ~BACKLIGHT_DUTY_CYCLE_MASK
;
64 I915_WRITE(reg
, (blc_pwm_ctl
|
65 (level
<< BACKLIGHT_DUTY_CYCLE_SHIFT
)));
69 * Returns the maximum level of the backlight duty cycle field.
71 static u32
intel_lvds_get_max_backlight(struct drm_device
*dev
)
73 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
77 reg
= BLC_PWM_PCH_CTL2
;
81 return ((I915_READ(reg
) & BACKLIGHT_MODULATION_FREQ_MASK
) >>
82 BACKLIGHT_MODULATION_FREQ_SHIFT
) * 2;
86 * Sets the power state for the panel.
88 static void intel_lvds_set_power(struct drm_device
*dev
, bool on
)
90 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
91 u32 pp_status
, ctl_reg
, status_reg
;
94 ctl_reg
= PCH_PP_CONTROL
;
95 status_reg
= PCH_PP_STATUS
;
98 status_reg
= PP_STATUS
;
102 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) |
105 pp_status
= I915_READ(status_reg
);
106 } while ((pp_status
& PP_ON
) == 0);
108 intel_lvds_set_backlight(dev
, dev_priv
->backlight_duty_cycle
);
110 intel_lvds_set_backlight(dev
, 0);
112 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) &
115 pp_status
= I915_READ(status_reg
);
116 } while (pp_status
& PP_ON
);
120 static void intel_lvds_dpms(struct drm_encoder
*encoder
, int mode
)
122 struct drm_device
*dev
= encoder
->dev
;
124 if (mode
== DRM_MODE_DPMS_ON
)
125 intel_lvds_set_power(dev
, true);
127 intel_lvds_set_power(dev
, false);
129 /* XXX: We never power down the LVDS pairs. */
132 static void intel_lvds_save(struct drm_connector
*connector
)
134 struct drm_device
*dev
= connector
->dev
;
135 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
136 u32 pp_on_reg
, pp_off_reg
, pp_ctl_reg
, pp_div_reg
;
140 pp_on_reg
= PCH_PP_ON_DELAYS
;
141 pp_off_reg
= PCH_PP_OFF_DELAYS
;
142 pp_ctl_reg
= PCH_PP_CONTROL
;
143 pp_div_reg
= PCH_PP_DIVISOR
;
144 pwm_ctl_reg
= BLC_PWM_CPU_CTL
;
146 pp_on_reg
= PP_ON_DELAYS
;
147 pp_off_reg
= PP_OFF_DELAYS
;
148 pp_ctl_reg
= PP_CONTROL
;
149 pp_div_reg
= PP_DIVISOR
;
150 pwm_ctl_reg
= BLC_PWM_CTL
;
153 dev_priv
->savePP_ON
= I915_READ(pp_on_reg
);
154 dev_priv
->savePP_OFF
= I915_READ(pp_off_reg
);
155 dev_priv
->savePP_CONTROL
= I915_READ(pp_ctl_reg
);
156 dev_priv
->savePP_DIVISOR
= I915_READ(pp_div_reg
);
157 dev_priv
->saveBLC_PWM_CTL
= I915_READ(pwm_ctl_reg
);
158 dev_priv
->backlight_duty_cycle
= (dev_priv
->saveBLC_PWM_CTL
&
159 BACKLIGHT_DUTY_CYCLE_MASK
);
162 * If the light is off at server startup, just make it full brightness
164 if (dev_priv
->backlight_duty_cycle
== 0)
165 dev_priv
->backlight_duty_cycle
=
166 intel_lvds_get_max_backlight(dev
);
169 static void intel_lvds_restore(struct drm_connector
*connector
)
171 struct drm_device
*dev
= connector
->dev
;
172 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
173 u32 pp_on_reg
, pp_off_reg
, pp_ctl_reg
, pp_div_reg
;
177 pp_on_reg
= PCH_PP_ON_DELAYS
;
178 pp_off_reg
= PCH_PP_OFF_DELAYS
;
179 pp_ctl_reg
= PCH_PP_CONTROL
;
180 pp_div_reg
= PCH_PP_DIVISOR
;
181 pwm_ctl_reg
= BLC_PWM_CPU_CTL
;
183 pp_on_reg
= PP_ON_DELAYS
;
184 pp_off_reg
= PP_OFF_DELAYS
;
185 pp_ctl_reg
= PP_CONTROL
;
186 pp_div_reg
= PP_DIVISOR
;
187 pwm_ctl_reg
= BLC_PWM_CTL
;
190 I915_WRITE(pwm_ctl_reg
, dev_priv
->saveBLC_PWM_CTL
);
191 I915_WRITE(pp_on_reg
, dev_priv
->savePP_ON
);
192 I915_WRITE(pp_off_reg
, dev_priv
->savePP_OFF
);
193 I915_WRITE(pp_div_reg
, dev_priv
->savePP_DIVISOR
);
194 I915_WRITE(pp_ctl_reg
, dev_priv
->savePP_CONTROL
);
195 if (dev_priv
->savePP_CONTROL
& POWER_TARGET_ON
)
196 intel_lvds_set_power(dev
, true);
198 intel_lvds_set_power(dev
, false);
201 static int intel_lvds_mode_valid(struct drm_connector
*connector
,
202 struct drm_display_mode
*mode
)
204 struct drm_device
*dev
= connector
->dev
;
205 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
206 struct drm_display_mode
*fixed_mode
= dev_priv
->panel_fixed_mode
;
209 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
211 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
218 static bool intel_lvds_mode_fixup(struct drm_encoder
*encoder
,
219 struct drm_display_mode
*mode
,
220 struct drm_display_mode
*adjusted_mode
)
223 * float point operation is not supported . So the PANEL_RATIO_FACTOR
224 * is defined, which can avoid the float point computation when
225 * calculating the panel ratio.
227 #define PANEL_RATIO_FACTOR 8192
228 struct drm_device
*dev
= encoder
->dev
;
229 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
230 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
231 struct drm_encoder
*tmp_encoder
;
232 struct intel_output
*intel_output
= enc_to_intel_output(encoder
);
233 struct intel_lvds_priv
*lvds_priv
= intel_output
->dev_priv
;
234 u32 pfit_control
= 0, pfit_pgm_ratios
= 0;
235 int left_border
= 0, right_border
= 0, top_border
= 0;
236 int bottom_border
= 0;
238 int panel_ratio
, desired_ratio
, vert_scale
, horiz_scale
;
239 int horiz_ratio
, vert_ratio
;
240 u32 hsync_width
, vsync_width
;
241 u32 hblank_width
, vblank_width
;
242 u32 hsync_pos
, vsync_pos
;
244 /* Should never happen!! */
245 if (!IS_I965G(dev
) && intel_crtc
->pipe
== 0) {
246 DRM_ERROR("Can't support LVDS on pipe A\n");
250 /* Should never happen!! */
251 list_for_each_entry(tmp_encoder
, &dev
->mode_config
.encoder_list
, head
) {
252 if (tmp_encoder
!= encoder
&& tmp_encoder
->crtc
== encoder
->crtc
) {
253 DRM_ERROR("Can't enable LVDS and another "
254 "encoder on the same pipe\n");
258 /* If we don't have a panel mode, there is nothing we can do */
259 if (dev_priv
->panel_fixed_mode
== NULL
)
262 * If we have timings from the BIOS for the panel, put them in
263 * to the adjusted mode. The CRTC will be set up for this mode,
264 * with the panel scaling set up to source from the H/VDisplay
265 * of the original mode.
267 if (dev_priv
->panel_fixed_mode
!= NULL
) {
268 adjusted_mode
->hdisplay
= dev_priv
->panel_fixed_mode
->hdisplay
;
269 adjusted_mode
->hsync_start
=
270 dev_priv
->panel_fixed_mode
->hsync_start
;
271 adjusted_mode
->hsync_end
=
272 dev_priv
->panel_fixed_mode
->hsync_end
;
273 adjusted_mode
->htotal
= dev_priv
->panel_fixed_mode
->htotal
;
274 adjusted_mode
->vdisplay
= dev_priv
->panel_fixed_mode
->vdisplay
;
275 adjusted_mode
->vsync_start
=
276 dev_priv
->panel_fixed_mode
->vsync_start
;
277 adjusted_mode
->vsync_end
=
278 dev_priv
->panel_fixed_mode
->vsync_end
;
279 adjusted_mode
->vtotal
= dev_priv
->panel_fixed_mode
->vtotal
;
280 adjusted_mode
->clock
= dev_priv
->panel_fixed_mode
->clock
;
281 drm_mode_set_crtcinfo(adjusted_mode
, CRTC_INTERLACE_HALVE_V
);
284 /* Make sure pre-965s set dither correctly */
285 if (!IS_I965G(dev
)) {
286 if (dev_priv
->panel_wants_dither
|| dev_priv
->lvds_dither
)
287 pfit_control
|= PANEL_8TO6_DITHER_ENABLE
;
290 /* Native modes don't need fitting */
291 if (adjusted_mode
->hdisplay
== mode
->hdisplay
&&
292 adjusted_mode
->vdisplay
== mode
->vdisplay
) {
298 /* 965+ wants fuzzy fitting */
300 pfit_control
|= (intel_crtc
->pipe
<< PFIT_PIPE_SHIFT
) |
303 hsync_width
= adjusted_mode
->crtc_hsync_end
-
304 adjusted_mode
->crtc_hsync_start
;
305 vsync_width
= adjusted_mode
->crtc_vsync_end
-
306 adjusted_mode
->crtc_vsync_start
;
307 hblank_width
= adjusted_mode
->crtc_hblank_end
-
308 adjusted_mode
->crtc_hblank_start
;
309 vblank_width
= adjusted_mode
->crtc_vblank_end
-
310 adjusted_mode
->crtc_vblank_start
;
312 * Deal with panel fitting options. Figure out how to stretch the
313 * image based on its aspect ratio & the current panel fitting mode.
315 panel_ratio
= adjusted_mode
->hdisplay
* PANEL_RATIO_FACTOR
/
316 adjusted_mode
->vdisplay
;
317 desired_ratio
= mode
->hdisplay
* PANEL_RATIO_FACTOR
/
320 * Enable automatic panel scaling for non-native modes so that they fill
321 * the screen. Should be enabled before the pipe is enabled, according
322 * to register description and PRM.
323 * Change the value here to see the borders for debugging
325 I915_WRITE(BCLRPAT_A
, 0);
326 I915_WRITE(BCLRPAT_B
, 0);
328 switch (lvds_priv
->fitting_mode
) {
329 case DRM_MODE_SCALE_CENTER
:
331 * For centered modes, we have to calculate border widths &
332 * heights and modify the values programmed into the CRTC.
334 left_border
= (adjusted_mode
->hdisplay
- mode
->hdisplay
) / 2;
335 right_border
= left_border
;
336 if (mode
->hdisplay
& 1)
338 top_border
= (adjusted_mode
->vdisplay
- mode
->vdisplay
) / 2;
339 bottom_border
= top_border
;
340 if (mode
->vdisplay
& 1)
342 /* Set active & border values */
343 adjusted_mode
->crtc_hdisplay
= mode
->hdisplay
;
344 /* Keep the boder be even */
345 if (right_border
& 1)
347 /* use the border directly instead of border minuse one */
348 adjusted_mode
->crtc_hblank_start
= mode
->hdisplay
+
350 /* keep the blank width constant */
351 adjusted_mode
->crtc_hblank_end
=
352 adjusted_mode
->crtc_hblank_start
+ hblank_width
;
353 /* get the hsync pos relative to hblank start */
354 hsync_pos
= (hblank_width
- hsync_width
) / 2;
355 /* keep the hsync pos be even */
358 adjusted_mode
->crtc_hsync_start
=
359 adjusted_mode
->crtc_hblank_start
+ hsync_pos
;
360 /* keep the hsync width constant */
361 adjusted_mode
->crtc_hsync_end
=
362 adjusted_mode
->crtc_hsync_start
+ hsync_width
;
363 adjusted_mode
->crtc_vdisplay
= mode
->vdisplay
;
364 /* use the border instead of border minus one */
365 adjusted_mode
->crtc_vblank_start
= mode
->vdisplay
+
367 /* keep the vblank width constant */
368 adjusted_mode
->crtc_vblank_end
=
369 adjusted_mode
->crtc_vblank_start
+ vblank_width
;
370 /* get the vsync start postion relative to vblank start */
371 vsync_pos
= (vblank_width
- vsync_width
) / 2;
372 adjusted_mode
->crtc_vsync_start
=
373 adjusted_mode
->crtc_vblank_start
+ vsync_pos
;
374 /* keep the vsync width constant */
375 adjusted_mode
->crtc_vsync_end
=
376 adjusted_mode
->crtc_vblank_start
+ vsync_width
;
379 case DRM_MODE_SCALE_ASPECT
:
380 /* Scale but preserve the spect ratio */
381 pfit_control
|= PFIT_ENABLE
;
383 /* 965+ is easy, it does everything in hw */
384 if (panel_ratio
> desired_ratio
)
385 pfit_control
|= PFIT_SCALING_PILLAR
;
386 else if (panel_ratio
< desired_ratio
)
387 pfit_control
|= PFIT_SCALING_LETTER
;
389 pfit_control
|= PFIT_SCALING_AUTO
;
392 * For earlier chips we have to calculate the scaling
393 * ratio by hand and program it into the
394 * PFIT_PGM_RATIO register
396 u32 horiz_bits
, vert_bits
, bits
= 12;
397 horiz_ratio
= mode
->hdisplay
* PANEL_RATIO_FACTOR
/
398 adjusted_mode
->hdisplay
;
399 vert_ratio
= mode
->vdisplay
* PANEL_RATIO_FACTOR
/
400 adjusted_mode
->vdisplay
;
401 horiz_scale
= adjusted_mode
->hdisplay
*
402 PANEL_RATIO_FACTOR
/ mode
->hdisplay
;
403 vert_scale
= adjusted_mode
->vdisplay
*
404 PANEL_RATIO_FACTOR
/ mode
->vdisplay
;
406 /* retain aspect ratio */
407 if (panel_ratio
> desired_ratio
) { /* Pillar */
409 scaled_width
= mode
->hdisplay
* vert_scale
/
411 horiz_ratio
= vert_ratio
;
412 pfit_control
|= (VERT_AUTO_SCALE
|
413 VERT_INTERP_BILINEAR
|
414 HORIZ_INTERP_BILINEAR
);
415 /* Pillar will have left/right borders */
416 left_border
= (adjusted_mode
->hdisplay
-
418 right_border
= left_border
;
419 if (mode
->hdisplay
& 1) /* odd resolutions */
421 /* keep the border be even */
422 if (right_border
& 1)
424 adjusted_mode
->crtc_hdisplay
= scaled_width
;
425 /* use border instead of border minus one */
426 adjusted_mode
->crtc_hblank_start
=
427 scaled_width
+ right_border
;
428 /* keep the hblank width constant */
429 adjusted_mode
->crtc_hblank_end
=
430 adjusted_mode
->crtc_hblank_start
+
433 * get the hsync start pos relative to
436 hsync_pos
= (hblank_width
- hsync_width
) / 2;
437 /* keep the hsync_pos be even */
440 adjusted_mode
->crtc_hsync_start
=
441 adjusted_mode
->crtc_hblank_start
+
443 /* keept hsync width constant */
444 adjusted_mode
->crtc_hsync_end
=
445 adjusted_mode
->crtc_hsync_start
+
448 } else if (panel_ratio
< desired_ratio
) { /* letter */
449 u32 scaled_height
= mode
->vdisplay
*
450 horiz_scale
/ PANEL_RATIO_FACTOR
;
451 vert_ratio
= horiz_ratio
;
452 pfit_control
|= (HORIZ_AUTO_SCALE
|
453 VERT_INTERP_BILINEAR
|
454 HORIZ_INTERP_BILINEAR
);
455 /* Letterbox will have top/bottom border */
456 top_border
= (adjusted_mode
->vdisplay
-
458 bottom_border
= top_border
;
459 if (mode
->vdisplay
& 1)
461 adjusted_mode
->crtc_vdisplay
= scaled_height
;
462 /* use border instead of border minus one */
463 adjusted_mode
->crtc_vblank_start
=
464 scaled_height
+ bottom_border
;
465 /* keep the vblank width constant */
466 adjusted_mode
->crtc_vblank_end
=
467 adjusted_mode
->crtc_vblank_start
+
470 * get the vsync start pos relative to
473 vsync_pos
= (vblank_width
- vsync_width
) / 2;
474 adjusted_mode
->crtc_vsync_start
=
475 adjusted_mode
->crtc_vblank_start
+
477 /* keep the vsync width constant */
478 adjusted_mode
->crtc_vsync_end
=
479 adjusted_mode
->crtc_vsync_start
+
483 /* Aspects match, Let hw scale both directions */
484 pfit_control
|= (VERT_AUTO_SCALE
|
486 VERT_INTERP_BILINEAR
|
487 HORIZ_INTERP_BILINEAR
);
489 horiz_bits
= (1 << bits
) * horiz_ratio
/
491 vert_bits
= (1 << bits
) * vert_ratio
/
494 ((vert_bits
<< PFIT_VERT_SCALE_SHIFT
) &
495 PFIT_VERT_SCALE_MASK
) |
496 ((horiz_bits
<< PFIT_HORIZ_SCALE_SHIFT
) &
497 PFIT_HORIZ_SCALE_MASK
);
501 case DRM_MODE_SCALE_FULLSCREEN
:
503 * Full scaling, even if it changes the aspect ratio.
504 * Fortunately this is all done for us in hw.
506 pfit_control
|= PFIT_ENABLE
;
508 pfit_control
|= PFIT_SCALING_AUTO
;
510 pfit_control
|= (VERT_AUTO_SCALE
| HORIZ_AUTO_SCALE
|
511 VERT_INTERP_BILINEAR
|
512 HORIZ_INTERP_BILINEAR
);
519 lvds_priv
->pfit_control
= pfit_control
;
520 lvds_priv
->pfit_pgm_ratios
= pfit_pgm_ratios
;
522 * XXX: It would be nice to support lower refresh rates on the
523 * panels to reduce power consumption, and perhaps match the
524 * user's requested refresh rate.
530 static void intel_lvds_prepare(struct drm_encoder
*encoder
)
532 struct drm_device
*dev
= encoder
->dev
;
533 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
537 reg
= BLC_PWM_CPU_CTL
;
541 dev_priv
->saveBLC_PWM_CTL
= I915_READ(reg
);
542 dev_priv
->backlight_duty_cycle
= (dev_priv
->saveBLC_PWM_CTL
&
543 BACKLIGHT_DUTY_CYCLE_MASK
);
545 intel_lvds_set_power(dev
, false);
548 static void intel_lvds_commit( struct drm_encoder
*encoder
)
550 struct drm_device
*dev
= encoder
->dev
;
551 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
553 if (dev_priv
->backlight_duty_cycle
== 0)
554 dev_priv
->backlight_duty_cycle
=
555 intel_lvds_get_max_backlight(dev
);
557 intel_lvds_set_power(dev
, true);
560 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
561 struct drm_display_mode
*mode
,
562 struct drm_display_mode
*adjusted_mode
)
564 struct drm_device
*dev
= encoder
->dev
;
565 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
566 struct intel_output
*intel_output
= enc_to_intel_output(encoder
);
567 struct intel_lvds_priv
*lvds_priv
= intel_output
->dev_priv
;
570 * The LVDS pin pair will already have been turned on in the
571 * intel_crtc_mode_set since it has a large impact on the DPLL
575 /* No panel fitting yet, fixme */
580 * Enable automatic panel scaling so that non-native modes fill the
581 * screen. Should be enabled before the pipe is enabled, according to
582 * register description and PRM.
584 I915_WRITE(PFIT_PGM_RATIOS
, lvds_priv
->pfit_pgm_ratios
);
585 I915_WRITE(PFIT_CONTROL
, lvds_priv
->pfit_control
);
589 * Detect the LVDS connection.
591 * This always returns CONNECTOR_STATUS_CONNECTED. This connector should only have
592 * been set up if the LVDS was actually connected anyway.
594 static enum drm_connector_status
intel_lvds_detect(struct drm_connector
*connector
)
596 return connector_status_connected
;
600 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
602 static int intel_lvds_get_modes(struct drm_connector
*connector
)
604 struct drm_device
*dev
= connector
->dev
;
605 struct intel_output
*intel_output
= to_intel_output(connector
);
606 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
609 ret
= intel_ddc_get_modes(intel_output
);
614 /* Didn't get an EDID, so
615 * Set wide sync ranges so we get all modes
616 * handed to valid_mode for checking
618 connector
->display_info
.min_vfreq
= 0;
619 connector
->display_info
.max_vfreq
= 200;
620 connector
->display_info
.min_hfreq
= 0;
621 connector
->display_info
.max_hfreq
= 200;
623 if (dev_priv
->panel_fixed_mode
!= NULL
) {
624 struct drm_display_mode
*mode
;
626 mode
= drm_mode_duplicate(dev
, dev_priv
->panel_fixed_mode
);
627 drm_mode_probed_add(connector
, mode
);
636 * intel_lvds_destroy - unregister and free LVDS structures
637 * @connector: connector to free
639 * Unregister the DDC bus for this connector then free the driver private
642 static void intel_lvds_destroy(struct drm_connector
*connector
)
644 struct intel_output
*intel_output
= to_intel_output(connector
);
646 if (intel_output
->ddc_bus
)
647 intel_i2c_destroy(intel_output
->ddc_bus
);
648 drm_sysfs_connector_remove(connector
);
649 drm_connector_cleanup(connector
);
653 static int intel_lvds_set_property(struct drm_connector
*connector
,
654 struct drm_property
*property
,
657 struct drm_device
*dev
= connector
->dev
;
658 struct intel_output
*intel_output
=
659 to_intel_output(connector
);
661 if (property
== dev
->mode_config
.scaling_mode_property
&&
662 connector
->encoder
) {
663 struct drm_crtc
*crtc
= connector
->encoder
->crtc
;
664 struct intel_lvds_priv
*lvds_priv
= intel_output
->dev_priv
;
665 if (value
== DRM_MODE_SCALE_NONE
) {
666 DRM_DEBUG_KMS("no scaling not supported\n");
669 if (lvds_priv
->fitting_mode
== value
) {
670 /* the LVDS scaling property is not changed */
673 lvds_priv
->fitting_mode
= value
;
674 if (crtc
&& crtc
->enabled
) {
676 * If the CRTC is enabled, the display will be changed
677 * according to the new panel fitting mode.
679 drm_crtc_helper_set_mode(crtc
, &crtc
->mode
,
680 crtc
->x
, crtc
->y
, crtc
->fb
);
687 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
688 .dpms
= intel_lvds_dpms
,
689 .mode_fixup
= intel_lvds_mode_fixup
,
690 .prepare
= intel_lvds_prepare
,
691 .mode_set
= intel_lvds_mode_set
,
692 .commit
= intel_lvds_commit
,
695 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
696 .get_modes
= intel_lvds_get_modes
,
697 .mode_valid
= intel_lvds_mode_valid
,
698 .best_encoder
= intel_best_encoder
,
701 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
702 .dpms
= drm_helper_connector_dpms
,
703 .save
= intel_lvds_save
,
704 .restore
= intel_lvds_restore
,
705 .detect
= intel_lvds_detect
,
706 .fill_modes
= drm_helper_probe_single_connector_modes
,
707 .set_property
= intel_lvds_set_property
,
708 .destroy
= intel_lvds_destroy
,
712 static void intel_lvds_enc_destroy(struct drm_encoder
*encoder
)
714 drm_encoder_cleanup(encoder
);
717 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
718 .destroy
= intel_lvds_enc_destroy
,
721 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
723 DRM_DEBUG_KMS("Skipping LVDS initialization for %s\n", id
->ident
);
727 /* These systems claim to have LVDS, but really don't */
728 static const struct dmi_system_id intel_no_lvds
[] = {
730 .callback
= intel_no_lvds_dmi_callback
,
731 .ident
= "Apple Mac Mini (Core series)",
733 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
734 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
738 .callback
= intel_no_lvds_dmi_callback
,
739 .ident
= "Apple Mac Mini (Core 2 series)",
741 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
742 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
746 .callback
= intel_no_lvds_dmi_callback
,
747 .ident
= "MSI IM-945GSE-A",
749 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
750 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
754 .callback
= intel_no_lvds_dmi_callback
,
755 .ident
= "Dell Studio Hybrid",
757 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
758 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
762 .callback
= intel_no_lvds_dmi_callback
,
763 .ident
= "AOpen Mini PC",
765 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
766 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
770 .callback
= intel_no_lvds_dmi_callback
,
771 .ident
= "AOpen Mini PC MP915",
773 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
774 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
778 .callback
= intel_no_lvds_dmi_callback
,
779 .ident
= "Aopen i945GTt-VFA",
781 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
785 { } /* terminating entry */
790 * check_lid_device -- check whether @handle is an ACPI LID device.
791 * @handle: ACPI device handle
792 * @level : depth in the ACPI namespace tree
793 * @context: the number of LID device when we find the device
794 * @rv: a return value to fill if desired (Not use)
797 check_lid_device(acpi_handle handle
, u32 level
, void *context
,
800 struct acpi_device
*acpi_dev
;
801 int *lid_present
= context
;
804 /* Get the acpi device for device handle */
805 if (acpi_bus_get_device(handle
, &acpi_dev
) || !acpi_dev
) {
806 /* If there is no ACPI device for handle, return */
810 if (!strncmp(acpi_device_hid(acpi_dev
), "PNP0C0D", 7))
817 * check whether there exists the ACPI LID device by enumerating the ACPI
820 static int intel_lid_present(void)
825 /* If ACPI is disabled, there is no ACPI device tree to
826 * check, so assume the LID device would have been present.
831 acpi_walk_namespace(ACPI_TYPE_DEVICE
, ACPI_ROOT_OBJECT
,
833 check_lid_device
, &lid_present
, NULL
);
838 static int intel_lid_present(void)
840 /* In the absence of ACPI built in, assume that the LID device would
848 * intel_lvds_init - setup LVDS connectors on this device
851 * Create the connector, register the LVDS DDC bus, and try to figure out what
852 * modes we can display on the LVDS panel (if present).
854 void intel_lvds_init(struct drm_device
*dev
)
856 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
857 struct intel_output
*intel_output
;
858 struct drm_connector
*connector
;
859 struct drm_encoder
*encoder
;
860 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
861 struct drm_crtc
*crtc
;
862 struct intel_lvds_priv
*lvds_priv
;
864 int pipe
, gpio
= GPIOC
;
866 /* Skip init on machines we know falsely report LVDS */
867 if (dmi_check_system(intel_no_lvds
))
870 /* Assume that any device without an ACPI LID device also doesn't
871 * have an integrated LVDS. We would be better off parsing the BIOS
872 * to get a reliable indicator, but that code isn't written yet.
874 * In the case of all-in-one desktops using LVDS that we've seen,
875 * they're using SDVO LVDS.
877 if (!intel_lid_present())
881 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
883 if (dev_priv
->edp_support
) {
884 DRM_DEBUG("disable LVDS for eDP support\n");
890 intel_output
= kzalloc(sizeof(struct intel_output
) +
891 sizeof(struct intel_lvds_priv
), GFP_KERNEL
);
896 connector
= &intel_output
->base
;
897 encoder
= &intel_output
->enc
;
898 drm_connector_init(dev
, &intel_output
->base
, &intel_lvds_connector_funcs
,
899 DRM_MODE_CONNECTOR_LVDS
);
901 drm_encoder_init(dev
, &intel_output
->enc
, &intel_lvds_enc_funcs
,
902 DRM_MODE_ENCODER_LVDS
);
904 drm_mode_connector_attach_encoder(&intel_output
->base
, &intel_output
->enc
);
905 intel_output
->type
= INTEL_OUTPUT_LVDS
;
907 intel_output
->clone_mask
= (1 << INTEL_LVDS_CLONE_BIT
);
908 intel_output
->crtc_mask
= (1 << 1);
909 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
910 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
911 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
912 connector
->interlace_allowed
= false;
913 connector
->doublescan_allowed
= false;
915 lvds_priv
= (struct intel_lvds_priv
*)(intel_output
+ 1);
916 intel_output
->dev_priv
= lvds_priv
;
917 /* create the scaling mode property */
918 drm_mode_create_scaling_mode_property(dev
);
920 * the initial panel fitting mode will be FULL_SCREEN.
923 drm_connector_attach_property(&intel_output
->base
,
924 dev
->mode_config
.scaling_mode_property
,
925 DRM_MODE_SCALE_FULLSCREEN
);
926 lvds_priv
->fitting_mode
= DRM_MODE_SCALE_FULLSCREEN
;
929 * 1) check for EDID on DDC
930 * 2) check for VBT data
931 * 3) check to see if LVDS is already on
932 * if none of the above, no panel
933 * 4) make sure lid is open
934 * if closed, act like it's not there for now
937 /* Set up the DDC bus. */
938 intel_output
->ddc_bus
= intel_i2c_create(dev
, gpio
, "LVDSDDC_C");
939 if (!intel_output
->ddc_bus
) {
940 dev_printk(KERN_ERR
, &dev
->pdev
->dev
, "DDC bus registration "
946 * Attempt to get the fixed panel mode from DDC. Assume that the
947 * preferred mode is the right one.
949 intel_ddc_get_modes(intel_output
);
951 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
952 mutex_lock(&dev
->mode_config
.mutex
);
953 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
954 dev_priv
->panel_fixed_mode
=
955 drm_mode_duplicate(dev
, scan
);
956 mutex_unlock(&dev
->mode_config
.mutex
);
959 mutex_unlock(&dev
->mode_config
.mutex
);
962 /* Failed to get EDID, what about VBT? */
963 if (dev_priv
->lfp_lvds_vbt_mode
) {
964 mutex_lock(&dev
->mode_config
.mutex
);
965 dev_priv
->panel_fixed_mode
=
966 drm_mode_duplicate(dev
, dev_priv
->lfp_lvds_vbt_mode
);
967 mutex_unlock(&dev
->mode_config
.mutex
);
968 if (dev_priv
->panel_fixed_mode
) {
969 dev_priv
->panel_fixed_mode
->type
|=
970 DRM_MODE_TYPE_PREFERRED
;
976 * If we didn't get EDID, try checking if the panel is already turned
977 * on. If so, assume that whatever is currently programmed is the
981 /* IGDNG: FIXME if still fail, not try pipe mode now */
985 lvds
= I915_READ(LVDS
);
986 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
987 crtc
= intel_get_crtc_from_pipe(dev
, pipe
);
989 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
990 dev_priv
->panel_fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
991 if (dev_priv
->panel_fixed_mode
) {
992 dev_priv
->panel_fixed_mode
->type
|=
993 DRM_MODE_TYPE_PREFERRED
;
998 /* If we still don't have a mode after all that, give up. */
999 if (!dev_priv
->panel_fixed_mode
)
1003 if (IS_IGDNG(dev
)) {
1005 /* make sure PWM is enabled */
1006 pwm
= I915_READ(BLC_PWM_CPU_CTL2
);
1007 pwm
|= (PWM_ENABLE
| PWM_PIPE_B
);
1008 I915_WRITE(BLC_PWM_CPU_CTL2
, pwm
);
1010 pwm
= I915_READ(BLC_PWM_PCH_CTL1
);
1011 pwm
|= PWM_PCH_ENABLE
;
1012 I915_WRITE(BLC_PWM_PCH_CTL1
, pwm
);
1014 drm_sysfs_connector_add(connector
);
1018 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1019 if (intel_output
->ddc_bus
)
1020 intel_i2c_destroy(intel_output
->ddc_bus
);
1021 drm_connector_cleanup(connector
);
1022 kfree(intel_output
);