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 <acpi/button.h>
31 #include <linux/dmi.h>
32 #include <linux/i2c.h>
33 #include <linux/slab.h>
38 #include "intel_drv.h"
41 #include <linux/acpi.h>
43 /* Private structure for the integrated LVDS support */
45 struct intel_encoder base
;
54 struct drm_display_mode
*fixed_mode
;
57 static struct intel_lvds
*to_intel_lvds(struct drm_encoder
*encoder
)
59 return container_of(encoder
, struct intel_lvds
, base
.base
);
62 static struct intel_lvds
*intel_attached_lvds(struct drm_connector
*connector
)
64 return container_of(intel_attached_encoder(connector
),
65 struct intel_lvds
, base
);
69 * Sets the power state for the panel.
71 static void intel_lvds_enable(struct intel_lvds
*intel_lvds
)
73 struct drm_device
*dev
= intel_lvds
->base
.base
.dev
;
74 struct intel_crtc
*intel_crtc
= to_intel_crtc(intel_lvds
->base
.base
.crtc
);
75 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
76 u32 ctl_reg
, lvds_reg
, stat_reg
;
78 if (HAS_PCH_SPLIT(dev
)) {
79 ctl_reg
= PCH_PP_CONTROL
;
81 stat_reg
= PCH_PP_STATUS
;
88 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) | LVDS_PORT_EN
);
90 if (intel_lvds
->pfit_dirty
) {
92 * Enable automatic panel scaling so that non-native modes
93 * fill the screen. The panel fitter should only be
94 * adjusted whilst the pipe is disabled, according to
95 * register description and PRM.
97 DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
98 intel_lvds
->pfit_control
,
99 intel_lvds
->pfit_pgm_ratios
);
101 I915_WRITE(PFIT_PGM_RATIOS
, intel_lvds
->pfit_pgm_ratios
);
102 I915_WRITE(PFIT_CONTROL
, intel_lvds
->pfit_control
);
103 intel_lvds
->pfit_dirty
= false;
106 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
107 POSTING_READ(lvds_reg
);
108 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
109 DRM_ERROR("timed out waiting for panel to power on\n");
111 intel_panel_enable_backlight(dev
, intel_crtc
->pipe
);
114 static void intel_lvds_disable(struct intel_lvds
*intel_lvds
)
116 struct drm_device
*dev
= intel_lvds
->base
.base
.dev
;
117 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
118 u32 ctl_reg
, lvds_reg
, stat_reg
;
120 if (HAS_PCH_SPLIT(dev
)) {
121 ctl_reg
= PCH_PP_CONTROL
;
123 stat_reg
= PCH_PP_STATUS
;
125 ctl_reg
= PP_CONTROL
;
127 stat_reg
= PP_STATUS
;
130 intel_panel_disable_backlight(dev
);
132 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
133 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
134 DRM_ERROR("timed out waiting for panel to power off\n");
136 if (intel_lvds
->pfit_control
) {
137 I915_WRITE(PFIT_CONTROL
, 0);
138 intel_lvds
->pfit_dirty
= true;
141 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) & ~LVDS_PORT_EN
);
142 POSTING_READ(lvds_reg
);
145 static void intel_lvds_dpms(struct drm_encoder
*encoder
, int mode
)
147 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
149 if (mode
== DRM_MODE_DPMS_ON
)
150 intel_lvds_enable(intel_lvds
);
152 intel_lvds_disable(intel_lvds
);
154 /* XXX: We never power down the LVDS pairs. */
157 static int intel_lvds_mode_valid(struct drm_connector
*connector
,
158 struct drm_display_mode
*mode
)
160 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
161 struct drm_display_mode
*fixed_mode
= intel_lvds
->fixed_mode
;
163 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
165 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
172 centre_horizontally(struct drm_display_mode
*mode
,
175 u32 border
, sync_pos
, blank_width
, sync_width
;
177 /* keep the hsync and hblank widths constant */
178 sync_width
= mode
->crtc_hsync_end
- mode
->crtc_hsync_start
;
179 blank_width
= mode
->crtc_hblank_end
- mode
->crtc_hblank_start
;
180 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
182 border
= (mode
->hdisplay
- width
+ 1) / 2;
183 border
+= border
& 1; /* make the border even */
185 mode
->crtc_hdisplay
= width
;
186 mode
->crtc_hblank_start
= width
+ border
;
187 mode
->crtc_hblank_end
= mode
->crtc_hblank_start
+ blank_width
;
189 mode
->crtc_hsync_start
= mode
->crtc_hblank_start
+ sync_pos
;
190 mode
->crtc_hsync_end
= mode
->crtc_hsync_start
+ sync_width
;
192 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
196 centre_vertically(struct drm_display_mode
*mode
,
199 u32 border
, sync_pos
, blank_width
, sync_width
;
201 /* keep the vsync and vblank widths constant */
202 sync_width
= mode
->crtc_vsync_end
- mode
->crtc_vsync_start
;
203 blank_width
= mode
->crtc_vblank_end
- mode
->crtc_vblank_start
;
204 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
206 border
= (mode
->vdisplay
- height
+ 1) / 2;
208 mode
->crtc_vdisplay
= height
;
209 mode
->crtc_vblank_start
= height
+ border
;
210 mode
->crtc_vblank_end
= mode
->crtc_vblank_start
+ blank_width
;
212 mode
->crtc_vsync_start
= mode
->crtc_vblank_start
+ sync_pos
;
213 mode
->crtc_vsync_end
= mode
->crtc_vsync_start
+ sync_width
;
215 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
218 static inline u32
panel_fitter_scaling(u32 source
, u32 target
)
221 * Floating point operation is not supported. So the FACTOR
222 * is defined, which can avoid the floating point computation
223 * when calculating the panel ratio.
226 #define FACTOR (1 << ACCURACY)
227 u32 ratio
= source
* FACTOR
/ target
;
228 return (FACTOR
* ratio
+ FACTOR
/2) / FACTOR
;
231 static bool intel_lvds_mode_fixup(struct drm_encoder
*encoder
,
232 const struct drm_display_mode
*mode
,
233 struct drm_display_mode
*adjusted_mode
)
235 struct drm_device
*dev
= encoder
->dev
;
236 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
237 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->crtc
);
238 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
239 struct intel_encoder
*tmp_encoder
;
240 u32 pfit_control
= 0, pfit_pgm_ratios
= 0, border
= 0;
243 /* Should never happen!! */
244 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
245 DRM_ERROR("Can't support LVDS on pipe A\n");
249 /* Should never happen!! */
250 for_each_encoder_on_crtc(dev
, encoder
->crtc
, tmp_encoder
) {
251 if (&tmp_encoder
->base
!= encoder
) {
252 DRM_ERROR("Can't enable LVDS and another "
253 "encoder on the same pipe\n");
259 * We have timings from the BIOS for the panel, put them in
260 * to the adjusted mode. The CRTC will be set up for this mode,
261 * with the panel scaling set up to source from the H/VDisplay
262 * of the original mode.
264 intel_fixed_panel_mode(intel_lvds
->fixed_mode
, adjusted_mode
);
266 if (HAS_PCH_SPLIT(dev
)) {
267 intel_pch_panel_fitting(dev
, intel_lvds
->fitting_mode
,
268 mode
, adjusted_mode
);
272 /* Native modes don't need fitting */
273 if (adjusted_mode
->hdisplay
== mode
->hdisplay
&&
274 adjusted_mode
->vdisplay
== mode
->vdisplay
)
277 /* 965+ wants fuzzy fitting */
278 if (INTEL_INFO(dev
)->gen
>= 4)
279 pfit_control
|= ((intel_crtc
->pipe
<< PFIT_PIPE_SHIFT
) |
283 * Enable automatic panel scaling for non-native modes so that they fill
284 * the screen. Should be enabled before the pipe is enabled, according
285 * to register description and PRM.
286 * Change the value here to see the borders for debugging
289 I915_WRITE(BCLRPAT(pipe
), 0);
291 drm_mode_set_crtcinfo(adjusted_mode
, 0);
293 switch (intel_lvds
->fitting_mode
) {
294 case DRM_MODE_SCALE_CENTER
:
296 * For centered modes, we have to calculate border widths &
297 * heights and modify the values programmed into the CRTC.
299 centre_horizontally(adjusted_mode
, mode
->hdisplay
);
300 centre_vertically(adjusted_mode
, mode
->vdisplay
);
301 border
= LVDS_BORDER_ENABLE
;
304 case DRM_MODE_SCALE_ASPECT
:
305 /* Scale but preserve the aspect ratio */
306 if (INTEL_INFO(dev
)->gen
>= 4) {
307 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
308 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
310 /* 965+ is easy, it does everything in hw */
311 if (scaled_width
> scaled_height
)
312 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_PILLAR
;
313 else if (scaled_width
< scaled_height
)
314 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_LETTER
;
315 else if (adjusted_mode
->hdisplay
!= mode
->hdisplay
)
316 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_AUTO
;
318 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
319 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
321 * For earlier chips we have to calculate the scaling
322 * ratio by hand and program it into the
323 * PFIT_PGM_RATIO register
325 if (scaled_width
> scaled_height
) { /* pillar */
326 centre_horizontally(adjusted_mode
, scaled_height
/ mode
->vdisplay
);
328 border
= LVDS_BORDER_ENABLE
;
329 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
) {
330 u32 bits
= panel_fitter_scaling(mode
->vdisplay
, adjusted_mode
->vdisplay
);
331 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
332 bits
<< PFIT_VERT_SCALE_SHIFT
);
333 pfit_control
|= (PFIT_ENABLE
|
334 VERT_INTERP_BILINEAR
|
335 HORIZ_INTERP_BILINEAR
);
337 } else if (scaled_width
< scaled_height
) { /* letter */
338 centre_vertically(adjusted_mode
, scaled_width
/ mode
->hdisplay
);
340 border
= LVDS_BORDER_ENABLE
;
341 if (mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
342 u32 bits
= panel_fitter_scaling(mode
->hdisplay
, adjusted_mode
->hdisplay
);
343 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
344 bits
<< PFIT_VERT_SCALE_SHIFT
);
345 pfit_control
|= (PFIT_ENABLE
|
346 VERT_INTERP_BILINEAR
|
347 HORIZ_INTERP_BILINEAR
);
350 /* Aspects match, Let hw scale both directions */
351 pfit_control
|= (PFIT_ENABLE
|
352 VERT_AUTO_SCALE
| HORIZ_AUTO_SCALE
|
353 VERT_INTERP_BILINEAR
|
354 HORIZ_INTERP_BILINEAR
);
358 case DRM_MODE_SCALE_FULLSCREEN
:
360 * Full scaling, even if it changes the aspect ratio.
361 * Fortunately this is all done for us in hw.
363 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
||
364 mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
365 pfit_control
|= PFIT_ENABLE
;
366 if (INTEL_INFO(dev
)->gen
>= 4)
367 pfit_control
|= PFIT_SCALING_AUTO
;
369 pfit_control
|= (VERT_AUTO_SCALE
|
370 VERT_INTERP_BILINEAR
|
372 HORIZ_INTERP_BILINEAR
);
381 /* If not enabling scaling, be consistent and always use 0. */
382 if ((pfit_control
& PFIT_ENABLE
) == 0) {
387 /* Make sure pre-965 set dither correctly */
388 if (INTEL_INFO(dev
)->gen
< 4 && dev_priv
->lvds_dither
)
389 pfit_control
|= PANEL_8TO6_DITHER_ENABLE
;
391 if (pfit_control
!= intel_lvds
->pfit_control
||
392 pfit_pgm_ratios
!= intel_lvds
->pfit_pgm_ratios
) {
393 intel_lvds
->pfit_control
= pfit_control
;
394 intel_lvds
->pfit_pgm_ratios
= pfit_pgm_ratios
;
395 intel_lvds
->pfit_dirty
= true;
397 dev_priv
->lvds_border_bits
= border
;
400 * XXX: It would be nice to support lower refresh rates on the
401 * panels to reduce power consumption, and perhaps match the
402 * user's requested refresh rate.
408 static void intel_lvds_prepare(struct drm_encoder
*encoder
)
410 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
412 intel_lvds_disable(intel_lvds
);
415 static void intel_lvds_commit(struct drm_encoder
*encoder
)
417 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
419 /* Always do a full power on as we do not know what state
422 intel_lvds_enable(intel_lvds
);
425 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
426 struct drm_display_mode
*mode
,
427 struct drm_display_mode
*adjusted_mode
)
430 * The LVDS pin pair will already have been turned on in the
431 * intel_crtc_mode_set since it has a large impact on the DPLL
437 * Detect the LVDS connection.
439 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
440 * connected and closed means disconnected. We also send hotplug events as
441 * needed, using lid status notification from the input layer.
443 static enum drm_connector_status
444 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
446 struct drm_device
*dev
= connector
->dev
;
447 enum drm_connector_status status
;
449 status
= intel_panel_detect(dev
);
450 if (status
!= connector_status_unknown
)
453 return connector_status_connected
;
457 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
459 static int intel_lvds_get_modes(struct drm_connector
*connector
)
461 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
462 struct drm_device
*dev
= connector
->dev
;
463 struct drm_display_mode
*mode
;
465 if (intel_lvds
->edid
)
466 return drm_add_edid_modes(connector
, intel_lvds
->edid
);
468 mode
= drm_mode_duplicate(dev
, intel_lvds
->fixed_mode
);
472 drm_mode_probed_add(connector
, mode
);
476 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
478 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
482 /* The GPU hangs up on these systems if modeset is performed on LID open */
483 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
485 .callback
= intel_no_modeset_on_lid_dmi_callback
,
486 .ident
= "Toshiba Tecra A11",
488 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
489 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
493 { } /* terminating entry */
497 * Lid events. Note the use of 'modeset_on_lid':
498 * - we set it on lid close, and reset it on open
499 * - we use it as a "only once" bit (ie we ignore
500 * duplicate events where it was already properly
502 * - the suspend/resume paths will also set it to
503 * zero, since they restore the mode ("lid open").
505 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
508 struct drm_i915_private
*dev_priv
=
509 container_of(nb
, struct drm_i915_private
, lid_notifier
);
510 struct drm_device
*dev
= dev_priv
->dev
;
511 struct drm_connector
*connector
= dev_priv
->int_lvds_connector
;
513 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
517 * check and update the status of LVDS connector after receiving
518 * the LID nofication event.
521 connector
->status
= connector
->funcs
->detect(connector
,
524 /* Don't force modeset on machines where it causes a GPU lockup */
525 if (dmi_check_system(intel_no_modeset_on_lid
))
527 if (!acpi_lid_open()) {
528 dev_priv
->modeset_on_lid
= 1;
532 if (!dev_priv
->modeset_on_lid
)
535 dev_priv
->modeset_on_lid
= 0;
537 mutex_lock(&dev
->mode_config
.mutex
);
538 drm_helper_resume_force_mode(dev
);
539 mutex_unlock(&dev
->mode_config
.mutex
);
545 * intel_lvds_destroy - unregister and free LVDS structures
546 * @connector: connector to free
548 * Unregister the DDC bus for this connector then free the driver private
551 static void intel_lvds_destroy(struct drm_connector
*connector
)
553 struct drm_device
*dev
= connector
->dev
;
554 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
556 intel_panel_destroy_backlight(dev
);
558 if (dev_priv
->lid_notifier
.notifier_call
)
559 acpi_lid_notifier_unregister(&dev_priv
->lid_notifier
);
560 drm_sysfs_connector_remove(connector
);
561 drm_connector_cleanup(connector
);
565 static int intel_lvds_set_property(struct drm_connector
*connector
,
566 struct drm_property
*property
,
569 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
570 struct drm_device
*dev
= connector
->dev
;
572 if (property
== dev
->mode_config
.scaling_mode_property
) {
573 struct drm_crtc
*crtc
= intel_lvds
->base
.base
.crtc
;
575 if (value
== DRM_MODE_SCALE_NONE
) {
576 DRM_DEBUG_KMS("no scaling not supported\n");
580 if (intel_lvds
->fitting_mode
== value
) {
581 /* the LVDS scaling property is not changed */
584 intel_lvds
->fitting_mode
= value
;
585 if (crtc
&& crtc
->enabled
) {
587 * If the CRTC is enabled, the display will be changed
588 * according to the new panel fitting mode.
590 drm_crtc_helper_set_mode(crtc
, &crtc
->mode
,
591 crtc
->x
, crtc
->y
, crtc
->fb
);
598 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
599 .dpms
= intel_lvds_dpms
,
600 .mode_fixup
= intel_lvds_mode_fixup
,
601 .prepare
= intel_lvds_prepare
,
602 .mode_set
= intel_lvds_mode_set
,
603 .commit
= intel_lvds_commit
,
606 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
607 .get_modes
= intel_lvds_get_modes
,
608 .mode_valid
= intel_lvds_mode_valid
,
609 .best_encoder
= intel_best_encoder
,
612 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
613 .dpms
= drm_helper_connector_dpms
,
614 .detect
= intel_lvds_detect
,
615 .fill_modes
= drm_helper_probe_single_connector_modes
,
616 .set_property
= intel_lvds_set_property
,
617 .destroy
= intel_lvds_destroy
,
620 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
621 .destroy
= intel_encoder_destroy
,
624 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
626 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
630 /* These systems claim to have LVDS, but really don't */
631 static const struct dmi_system_id intel_no_lvds
[] = {
633 .callback
= intel_no_lvds_dmi_callback
,
634 .ident
= "Apple Mac Mini (Core series)",
636 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
637 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
641 .callback
= intel_no_lvds_dmi_callback
,
642 .ident
= "Apple Mac Mini (Core 2 series)",
644 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
645 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
649 .callback
= intel_no_lvds_dmi_callback
,
650 .ident
= "MSI IM-945GSE-A",
652 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
653 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
657 .callback
= intel_no_lvds_dmi_callback
,
658 .ident
= "Dell Studio Hybrid",
660 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
661 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
665 .callback
= intel_no_lvds_dmi_callback
,
666 .ident
= "Dell OptiPlex FX170",
668 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
669 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
673 .callback
= intel_no_lvds_dmi_callback
,
674 .ident
= "AOpen Mini PC",
676 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
677 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
681 .callback
= intel_no_lvds_dmi_callback
,
682 .ident
= "AOpen Mini PC MP915",
684 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
685 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
689 .callback
= intel_no_lvds_dmi_callback
,
690 .ident
= "AOpen i915GMm-HFS",
692 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
693 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
697 .callback
= intel_no_lvds_dmi_callback
,
698 .ident
= "AOpen i45GMx-I",
700 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
701 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
705 .callback
= intel_no_lvds_dmi_callback
,
706 .ident
= "Aopen i945GTt-VFA",
708 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
712 .callback
= intel_no_lvds_dmi_callback
,
713 .ident
= "Clientron U800",
715 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
716 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
720 .callback
= intel_no_lvds_dmi_callback
,
721 .ident
= "Clientron E830",
723 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
724 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
728 .callback
= intel_no_lvds_dmi_callback
,
729 .ident
= "Asus EeeBox PC EB1007",
731 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
732 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
736 .callback
= intel_no_lvds_dmi_callback
,
737 .ident
= "Asus AT5NM10T-I",
739 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
740 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
744 .callback
= intel_no_lvds_dmi_callback
,
745 .ident
= "Hewlett-Packard HP t5740e Thin Client",
747 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
748 DMI_MATCH(DMI_PRODUCT_NAME
, "HP t5740e Thin Client"),
752 .callback
= intel_no_lvds_dmi_callback
,
753 .ident
= "Hewlett-Packard t5745",
755 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
756 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
760 .callback
= intel_no_lvds_dmi_callback
,
761 .ident
= "Hewlett-Packard st5747",
763 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
764 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
768 .callback
= intel_no_lvds_dmi_callback
,
769 .ident
= "MSI Wind Box DC500",
771 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
772 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
776 .callback
= intel_no_lvds_dmi_callback
,
777 .ident
= "ZOTAC ZBOXSD-ID12/ID13",
779 DMI_MATCH(DMI_BOARD_VENDOR
, "ZOTAC"),
780 DMI_MATCH(DMI_BOARD_NAME
, "ZBOXSD-ID12/ID13"),
784 { } /* terminating entry */
788 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
790 * @connector: LVDS connector
792 * Find the reduced downclock for LVDS in EDID.
794 static void intel_find_lvds_downclock(struct drm_device
*dev
,
795 struct drm_display_mode
*fixed_mode
,
796 struct drm_connector
*connector
)
798 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
799 struct drm_display_mode
*scan
;
802 temp_downclock
= fixed_mode
->clock
;
803 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
805 * If one mode has the same resolution with the fixed_panel
806 * mode while they have the different refresh rate, it means
807 * that the reduced downclock is found for the LVDS. In such
808 * case we can set the different FPx0/1 to dynamically select
809 * between low and high frequency.
811 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
812 scan
->hsync_start
== fixed_mode
->hsync_start
&&
813 scan
->hsync_end
== fixed_mode
->hsync_end
&&
814 scan
->htotal
== fixed_mode
->htotal
&&
815 scan
->vdisplay
== fixed_mode
->vdisplay
&&
816 scan
->vsync_start
== fixed_mode
->vsync_start
&&
817 scan
->vsync_end
== fixed_mode
->vsync_end
&&
818 scan
->vtotal
== fixed_mode
->vtotal
) {
819 if (scan
->clock
< temp_downclock
) {
821 * The downclock is already found. But we
822 * expect to find the lower downclock.
824 temp_downclock
= scan
->clock
;
828 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
829 /* We found the downclock for LVDS. */
830 dev_priv
->lvds_downclock_avail
= 1;
831 dev_priv
->lvds_downclock
= temp_downclock
;
832 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
833 "Normal clock %dKhz, downclock %dKhz\n",
834 fixed_mode
->clock
, temp_downclock
);
839 * Enumerate the child dev array parsed from VBT to check whether
840 * the LVDS is present.
841 * If it is present, return 1.
842 * If it is not present, return false.
843 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
845 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
848 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
851 if (!dev_priv
->child_dev_num
)
854 for (i
= 0; i
< dev_priv
->child_dev_num
; i
++) {
855 struct child_device_config
*child
= dev_priv
->child_dev
+ i
;
857 /* If the device type is not LFP, continue.
858 * We have to check both the new identifiers as well as the
859 * old for compatibility with some BIOSes.
861 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
862 child
->device_type
!= DEVICE_TYPE_LFP
)
865 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
866 *i2c_pin
= child
->i2c_pin
;
868 /* However, we cannot trust the BIOS writers to populate
869 * the VBT correctly. Since LVDS requires additional
870 * information from AIM blocks, a non-zero addin offset is
871 * a good indicator that the LVDS is actually present.
873 if (child
->addin_offset
)
876 /* But even then some BIOS writers perform some black magic
877 * and instantiate the device without reference to any
878 * additional data. Trust that if the VBT was written into
879 * the OpRegion then they have validated the LVDS's existence.
881 if (dev_priv
->opregion
.vbt
)
888 static bool intel_lvds_supported(struct drm_device
*dev
)
890 /* With the introduction of the PCH we gained a dedicated
891 * LVDS presence pin, use it. */
892 if (HAS_PCH_SPLIT(dev
))
895 /* Otherwise LVDS was only attached to mobile products,
896 * except for the inglorious 830gm */
897 return IS_MOBILE(dev
) && !IS_I830(dev
);
901 * intel_lvds_init - setup LVDS connectors on this device
904 * Create the connector, register the LVDS DDC bus, and try to figure out what
905 * modes we can display on the LVDS panel (if present).
907 bool intel_lvds_init(struct drm_device
*dev
)
909 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
910 struct intel_lvds
*intel_lvds
;
911 struct intel_encoder
*intel_encoder
;
912 struct intel_connector
*intel_connector
;
913 struct drm_connector
*connector
;
914 struct drm_encoder
*encoder
;
915 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
916 struct drm_crtc
*crtc
;
921 if (!intel_lvds_supported(dev
))
924 /* Skip init on machines we know falsely report LVDS */
925 if (dmi_check_system(intel_no_lvds
))
928 pin
= GMBUS_PORT_PANEL
;
929 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
930 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
934 if (HAS_PCH_SPLIT(dev
)) {
935 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
937 if (dev_priv
->edp
.support
) {
938 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
943 intel_lvds
= kzalloc(sizeof(struct intel_lvds
), GFP_KERNEL
);
948 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
949 if (!intel_connector
) {
954 if (!HAS_PCH_SPLIT(dev
)) {
955 intel_lvds
->pfit_control
= I915_READ(PFIT_CONTROL
);
958 intel_encoder
= &intel_lvds
->base
;
959 encoder
= &intel_encoder
->base
;
960 connector
= &intel_connector
->base
;
961 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
962 DRM_MODE_CONNECTOR_LVDS
);
964 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
965 DRM_MODE_ENCODER_LVDS
);
967 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
968 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
970 intel_encoder
->cloneable
= false;
971 if (HAS_PCH_SPLIT(dev
))
972 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
973 else if (IS_GEN4(dev
))
974 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
976 intel_encoder
->crtc_mask
= (1 << 1);
978 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
979 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
980 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
981 connector
->interlace_allowed
= false;
982 connector
->doublescan_allowed
= false;
984 /* create the scaling mode property */
985 drm_mode_create_scaling_mode_property(dev
);
987 * the initial panel fitting mode will be FULL_SCREEN.
990 drm_connector_attach_property(&intel_connector
->base
,
991 dev
->mode_config
.scaling_mode_property
,
992 DRM_MODE_SCALE_ASPECT
);
993 intel_lvds
->fitting_mode
= DRM_MODE_SCALE_ASPECT
;
996 * 1) check for EDID on DDC
997 * 2) check for VBT data
998 * 3) check to see if LVDS is already on
999 * if none of the above, no panel
1000 * 4) make sure lid is open
1001 * if closed, act like it's not there for now
1005 * Attempt to get the fixed panel mode from DDC. Assume that the
1006 * preferred mode is the right one.
1008 intel_lvds
->edid
= drm_get_edid(connector
,
1009 intel_gmbus_get_adapter(dev_priv
,
1011 if (intel_lvds
->edid
) {
1012 if (drm_add_edid_modes(connector
,
1013 intel_lvds
->edid
)) {
1014 drm_mode_connector_update_edid_property(connector
,
1017 kfree(intel_lvds
->edid
);
1018 intel_lvds
->edid
= NULL
;
1021 if (!intel_lvds
->edid
) {
1022 /* Didn't get an EDID, so
1023 * Set wide sync ranges so we get all modes
1024 * handed to valid_mode for checking
1026 connector
->display_info
.min_vfreq
= 0;
1027 connector
->display_info
.max_vfreq
= 200;
1028 connector
->display_info
.min_hfreq
= 0;
1029 connector
->display_info
.max_hfreq
= 200;
1032 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1033 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1034 intel_lvds
->fixed_mode
=
1035 drm_mode_duplicate(dev
, scan
);
1036 intel_find_lvds_downclock(dev
,
1037 intel_lvds
->fixed_mode
,
1043 /* Failed to get EDID, what about VBT? */
1044 if (dev_priv
->lfp_lvds_vbt_mode
) {
1045 intel_lvds
->fixed_mode
=
1046 drm_mode_duplicate(dev
, dev_priv
->lfp_lvds_vbt_mode
);
1047 if (intel_lvds
->fixed_mode
) {
1048 intel_lvds
->fixed_mode
->type
|=
1049 DRM_MODE_TYPE_PREFERRED
;
1055 * If we didn't get EDID, try checking if the panel is already turned
1056 * on. If so, assume that whatever is currently programmed is the
1060 /* Ironlake: FIXME if still fail, not try pipe mode now */
1061 if (HAS_PCH_SPLIT(dev
))
1064 lvds
= I915_READ(LVDS
);
1065 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1066 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1068 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1069 intel_lvds
->fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1070 if (intel_lvds
->fixed_mode
) {
1071 intel_lvds
->fixed_mode
->type
|=
1072 DRM_MODE_TYPE_PREFERRED
;
1077 /* If we still don't have a mode after all that, give up. */
1078 if (!intel_lvds
->fixed_mode
)
1083 * Unlock registers and just
1084 * leave them unlocked
1086 if (HAS_PCH_SPLIT(dev
)) {
1087 I915_WRITE(PCH_PP_CONTROL
,
1088 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1090 I915_WRITE(PP_CONTROL
,
1091 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1093 dev_priv
->lid_notifier
.notifier_call
= intel_lid_notify
;
1094 if (acpi_lid_notifier_register(&dev_priv
->lid_notifier
)) {
1095 DRM_DEBUG_KMS("lid notifier registration failed\n");
1096 dev_priv
->lid_notifier
.notifier_call
= NULL
;
1098 /* keep the LVDS connector */
1099 dev_priv
->int_lvds_connector
= connector
;
1100 drm_sysfs_connector_add(connector
);
1102 intel_panel_setup_backlight(dev
);
1107 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1108 drm_connector_cleanup(connector
);
1109 drm_encoder_cleanup(encoder
);
1111 kfree(intel_connector
);