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 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 drm_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 list_for_each_entry(tmp_encoder
, &dev
->mode_config
.encoder_list
, head
) {
251 if (tmp_encoder
!= encoder
&& tmp_encoder
->crtc
== encoder
->crtc
) {
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
);
413 * Prior to Ironlake, we must disable the pipe if we want to adjust
414 * the panel fitter. However at all other times we can just reset
415 * the registers regardless.
417 if (!HAS_PCH_SPLIT(encoder
->dev
) && intel_lvds
->pfit_dirty
)
418 intel_lvds_disable(intel_lvds
);
421 static void intel_lvds_commit(struct drm_encoder
*encoder
)
423 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
425 /* Always do a full power on as we do not know what state
428 intel_lvds_enable(intel_lvds
);
431 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
432 struct drm_display_mode
*mode
,
433 struct drm_display_mode
*adjusted_mode
)
436 * The LVDS pin pair will already have been turned on in the
437 * intel_crtc_mode_set since it has a large impact on the DPLL
443 * Detect the LVDS connection.
445 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
446 * connected and closed means disconnected. We also send hotplug events as
447 * needed, using lid status notification from the input layer.
449 static enum drm_connector_status
450 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
452 struct drm_device
*dev
= connector
->dev
;
453 enum drm_connector_status status
;
455 status
= intel_panel_detect(dev
);
456 if (status
!= connector_status_unknown
)
459 return connector_status_connected
;
463 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
465 static int intel_lvds_get_modes(struct drm_connector
*connector
)
467 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
468 struct drm_device
*dev
= connector
->dev
;
469 struct drm_display_mode
*mode
;
471 if (intel_lvds
->edid
)
472 return drm_add_edid_modes(connector
, intel_lvds
->edid
);
474 mode
= drm_mode_duplicate(dev
, intel_lvds
->fixed_mode
);
478 drm_mode_probed_add(connector
, mode
);
482 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
484 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
488 /* The GPU hangs up on these systems if modeset is performed on LID open */
489 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
491 .callback
= intel_no_modeset_on_lid_dmi_callback
,
492 .ident
= "Toshiba Tecra A11",
494 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
495 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
499 { } /* terminating entry */
503 * Lid events. Note the use of 'modeset_on_lid':
504 * - we set it on lid close, and reset it on open
505 * - we use it as a "only once" bit (ie we ignore
506 * duplicate events where it was already properly
508 * - the suspend/resume paths will also set it to
509 * zero, since they restore the mode ("lid open").
511 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
514 struct drm_i915_private
*dev_priv
=
515 container_of(nb
, struct drm_i915_private
, lid_notifier
);
516 struct drm_device
*dev
= dev_priv
->dev
;
517 struct drm_connector
*connector
= dev_priv
->int_lvds_connector
;
519 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
523 * check and update the status of LVDS connector after receiving
524 * the LID nofication event.
527 connector
->status
= connector
->funcs
->detect(connector
,
530 /* Don't force modeset on machines where it causes a GPU lockup */
531 if (dmi_check_system(intel_no_modeset_on_lid
))
533 if (!acpi_lid_open()) {
534 dev_priv
->modeset_on_lid
= 1;
538 if (!dev_priv
->modeset_on_lid
)
541 dev_priv
->modeset_on_lid
= 0;
543 mutex_lock(&dev
->mode_config
.mutex
);
544 drm_helper_resume_force_mode(dev
);
545 mutex_unlock(&dev
->mode_config
.mutex
);
551 * intel_lvds_destroy - unregister and free LVDS structures
552 * @connector: connector to free
554 * Unregister the DDC bus for this connector then free the driver private
557 static void intel_lvds_destroy(struct drm_connector
*connector
)
559 struct drm_device
*dev
= connector
->dev
;
560 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
562 intel_panel_destroy_backlight(dev
);
564 if (dev_priv
->lid_notifier
.notifier_call
)
565 acpi_lid_notifier_unregister(&dev_priv
->lid_notifier
);
566 drm_sysfs_connector_remove(connector
);
567 drm_connector_cleanup(connector
);
571 static int intel_lvds_set_property(struct drm_connector
*connector
,
572 struct drm_property
*property
,
575 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
576 struct drm_device
*dev
= connector
->dev
;
578 if (property
== dev
->mode_config
.scaling_mode_property
) {
579 struct drm_crtc
*crtc
= intel_lvds
->base
.base
.crtc
;
581 if (value
== DRM_MODE_SCALE_NONE
) {
582 DRM_DEBUG_KMS("no scaling not supported\n");
586 if (intel_lvds
->fitting_mode
== value
) {
587 /* the LVDS scaling property is not changed */
590 intel_lvds
->fitting_mode
= value
;
591 if (crtc
&& crtc
->enabled
) {
593 * If the CRTC is enabled, the display will be changed
594 * according to the new panel fitting mode.
596 drm_crtc_helper_set_mode(crtc
, &crtc
->mode
,
597 crtc
->x
, crtc
->y
, crtc
->fb
);
604 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
605 .dpms
= intel_lvds_dpms
,
606 .mode_fixup
= intel_lvds_mode_fixup
,
607 .prepare
= intel_lvds_prepare
,
608 .mode_set
= intel_lvds_mode_set
,
609 .commit
= intel_lvds_commit
,
612 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
613 .get_modes
= intel_lvds_get_modes
,
614 .mode_valid
= intel_lvds_mode_valid
,
615 .best_encoder
= intel_best_encoder
,
618 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
619 .dpms
= drm_helper_connector_dpms
,
620 .detect
= intel_lvds_detect
,
621 .fill_modes
= drm_helper_probe_single_connector_modes
,
622 .set_property
= intel_lvds_set_property
,
623 .destroy
= intel_lvds_destroy
,
626 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
627 .destroy
= intel_encoder_destroy
,
630 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
632 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
636 /* These systems claim to have LVDS, but really don't */
637 static const struct dmi_system_id intel_no_lvds
[] = {
639 .callback
= intel_no_lvds_dmi_callback
,
640 .ident
= "Apple Mac Mini (Core series)",
642 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
643 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
647 .callback
= intel_no_lvds_dmi_callback
,
648 .ident
= "Apple Mac Mini (Core 2 series)",
650 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
651 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
655 .callback
= intel_no_lvds_dmi_callback
,
656 .ident
= "MSI IM-945GSE-A",
658 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
659 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
663 .callback
= intel_no_lvds_dmi_callback
,
664 .ident
= "Dell Studio Hybrid",
666 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
667 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
671 .callback
= intel_no_lvds_dmi_callback
,
672 .ident
= "Dell OptiPlex FX170",
674 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
675 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
679 .callback
= intel_no_lvds_dmi_callback
,
680 .ident
= "AOpen Mini PC",
682 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
683 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
687 .callback
= intel_no_lvds_dmi_callback
,
688 .ident
= "AOpen Mini PC MP915",
690 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
691 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
695 .callback
= intel_no_lvds_dmi_callback
,
696 .ident
= "AOpen i915GMm-HFS",
698 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
699 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
703 .callback
= intel_no_lvds_dmi_callback
,
704 .ident
= "AOpen i45GMx-I",
706 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
707 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
711 .callback
= intel_no_lvds_dmi_callback
,
712 .ident
= "Aopen i945GTt-VFA",
714 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
718 .callback
= intel_no_lvds_dmi_callback
,
719 .ident
= "Clientron U800",
721 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
722 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
726 .callback
= intel_no_lvds_dmi_callback
,
727 .ident
= "Clientron E830",
729 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
730 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
734 .callback
= intel_no_lvds_dmi_callback
,
735 .ident
= "Asus EeeBox PC EB1007",
737 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
738 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
742 .callback
= intel_no_lvds_dmi_callback
,
743 .ident
= "Asus AT5NM10T-I",
745 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
746 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
750 .callback
= intel_no_lvds_dmi_callback
,
751 .ident
= "Hewlett-Packard HP t5740e Thin Client",
753 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
754 DMI_MATCH(DMI_PRODUCT_NAME
, "HP t5740e Thin Client"),
758 .callback
= intel_no_lvds_dmi_callback
,
759 .ident
= "Hewlett-Packard t5745",
761 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
762 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
766 .callback
= intel_no_lvds_dmi_callback
,
767 .ident
= "Hewlett-Packard st5747",
769 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
770 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
774 .callback
= intel_no_lvds_dmi_callback
,
775 .ident
= "MSI Wind Box DC500",
777 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
778 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
782 { } /* terminating entry */
786 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
788 * @connector: LVDS connector
790 * Find the reduced downclock for LVDS in EDID.
792 static void intel_find_lvds_downclock(struct drm_device
*dev
,
793 struct drm_display_mode
*fixed_mode
,
794 struct drm_connector
*connector
)
796 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
797 struct drm_display_mode
*scan
;
800 temp_downclock
= fixed_mode
->clock
;
801 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
803 * If one mode has the same resolution with the fixed_panel
804 * mode while they have the different refresh rate, it means
805 * that the reduced downclock is found for the LVDS. In such
806 * case we can set the different FPx0/1 to dynamically select
807 * between low and high frequency.
809 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
810 scan
->hsync_start
== fixed_mode
->hsync_start
&&
811 scan
->hsync_end
== fixed_mode
->hsync_end
&&
812 scan
->htotal
== fixed_mode
->htotal
&&
813 scan
->vdisplay
== fixed_mode
->vdisplay
&&
814 scan
->vsync_start
== fixed_mode
->vsync_start
&&
815 scan
->vsync_end
== fixed_mode
->vsync_end
&&
816 scan
->vtotal
== fixed_mode
->vtotal
) {
817 if (scan
->clock
< temp_downclock
) {
819 * The downclock is already found. But we
820 * expect to find the lower downclock.
822 temp_downclock
= scan
->clock
;
826 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
827 /* We found the downclock for LVDS. */
828 dev_priv
->lvds_downclock_avail
= 1;
829 dev_priv
->lvds_downclock
= temp_downclock
;
830 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
831 "Normal clock %dKhz, downclock %dKhz\n",
832 fixed_mode
->clock
, temp_downclock
);
837 * Enumerate the child dev array parsed from VBT to check whether
838 * the LVDS is present.
839 * If it is present, return 1.
840 * If it is not present, return false.
841 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
843 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
846 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
849 if (!dev_priv
->child_dev_num
)
852 for (i
= 0; i
< dev_priv
->child_dev_num
; i
++) {
853 struct child_device_config
*child
= dev_priv
->child_dev
+ i
;
855 /* If the device type is not LFP, continue.
856 * We have to check both the new identifiers as well as the
857 * old for compatibility with some BIOSes.
859 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
860 child
->device_type
!= DEVICE_TYPE_LFP
)
863 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
864 *i2c_pin
= child
->i2c_pin
;
866 /* However, we cannot trust the BIOS writers to populate
867 * the VBT correctly. Since LVDS requires additional
868 * information from AIM blocks, a non-zero addin offset is
869 * a good indicator that the LVDS is actually present.
871 if (child
->addin_offset
)
874 /* But even then some BIOS writers perform some black magic
875 * and instantiate the device without reference to any
876 * additional data. Trust that if the VBT was written into
877 * the OpRegion then they have validated the LVDS's existence.
879 if (dev_priv
->opregion
.vbt
)
886 static bool intel_lvds_supported(struct drm_device
*dev
)
888 /* With the introduction of the PCH we gained a dedicated
889 * LVDS presence pin, use it. */
890 if (HAS_PCH_SPLIT(dev
))
893 /* Otherwise LVDS was only attached to mobile products,
894 * except for the inglorious 830gm */
895 return IS_MOBILE(dev
) && !IS_I830(dev
);
899 * intel_lvds_init - setup LVDS connectors on this device
902 * Create the connector, register the LVDS DDC bus, and try to figure out what
903 * modes we can display on the LVDS panel (if present).
905 bool intel_lvds_init(struct drm_device
*dev
)
907 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
908 struct intel_lvds
*intel_lvds
;
909 struct intel_encoder
*intel_encoder
;
910 struct intel_connector
*intel_connector
;
911 struct drm_connector
*connector
;
912 struct drm_encoder
*encoder
;
913 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
914 struct drm_crtc
*crtc
;
919 if (!intel_lvds_supported(dev
))
922 /* Skip init on machines we know falsely report LVDS */
923 if (dmi_check_system(intel_no_lvds
))
926 pin
= GMBUS_PORT_PANEL
;
927 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
928 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
932 if (HAS_PCH_SPLIT(dev
)) {
933 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
935 if (dev_priv
->edp
.support
) {
936 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
941 intel_lvds
= kzalloc(sizeof(struct intel_lvds
), GFP_KERNEL
);
946 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
947 if (!intel_connector
) {
952 if (!HAS_PCH_SPLIT(dev
)) {
953 intel_lvds
->pfit_control
= I915_READ(PFIT_CONTROL
);
956 intel_encoder
= &intel_lvds
->base
;
957 encoder
= &intel_encoder
->base
;
958 connector
= &intel_connector
->base
;
959 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
960 DRM_MODE_CONNECTOR_LVDS
);
962 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
963 DRM_MODE_ENCODER_LVDS
);
965 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
966 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
968 intel_encoder
->clone_mask
= (1 << INTEL_LVDS_CLONE_BIT
);
969 if (HAS_PCH_SPLIT(dev
))
970 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
972 intel_encoder
->crtc_mask
= (1 << 1);
974 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
975 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
976 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
977 connector
->interlace_allowed
= false;
978 connector
->doublescan_allowed
= false;
980 /* create the scaling mode property */
981 drm_mode_create_scaling_mode_property(dev
);
983 * the initial panel fitting mode will be FULL_SCREEN.
986 drm_connector_attach_property(&intel_connector
->base
,
987 dev
->mode_config
.scaling_mode_property
,
988 DRM_MODE_SCALE_ASPECT
);
989 intel_lvds
->fitting_mode
= DRM_MODE_SCALE_ASPECT
;
992 * 1) check for EDID on DDC
993 * 2) check for VBT data
994 * 3) check to see if LVDS is already on
995 * if none of the above, no panel
996 * 4) make sure lid is open
997 * if closed, act like it's not there for now
1001 * Attempt to get the fixed panel mode from DDC. Assume that the
1002 * preferred mode is the right one.
1004 intel_lvds
->edid
= drm_get_edid(connector
,
1005 intel_gmbus_get_adapter(dev_priv
,
1007 if (intel_lvds
->edid
) {
1008 if (drm_add_edid_modes(connector
,
1009 intel_lvds
->edid
)) {
1010 drm_mode_connector_update_edid_property(connector
,
1013 kfree(intel_lvds
->edid
);
1014 intel_lvds
->edid
= NULL
;
1017 if (!intel_lvds
->edid
) {
1018 /* Didn't get an EDID, so
1019 * Set wide sync ranges so we get all modes
1020 * handed to valid_mode for checking
1022 connector
->display_info
.min_vfreq
= 0;
1023 connector
->display_info
.max_vfreq
= 200;
1024 connector
->display_info
.min_hfreq
= 0;
1025 connector
->display_info
.max_hfreq
= 200;
1028 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1029 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1030 intel_lvds
->fixed_mode
=
1031 drm_mode_duplicate(dev
, scan
);
1032 intel_find_lvds_downclock(dev
,
1033 intel_lvds
->fixed_mode
,
1039 /* Failed to get EDID, what about VBT? */
1040 if (dev_priv
->lfp_lvds_vbt_mode
) {
1041 intel_lvds
->fixed_mode
=
1042 drm_mode_duplicate(dev
, dev_priv
->lfp_lvds_vbt_mode
);
1043 if (intel_lvds
->fixed_mode
) {
1044 intel_lvds
->fixed_mode
->type
|=
1045 DRM_MODE_TYPE_PREFERRED
;
1051 * If we didn't get EDID, try checking if the panel is already turned
1052 * on. If so, assume that whatever is currently programmed is the
1056 /* Ironlake: FIXME if still fail, not try pipe mode now */
1057 if (HAS_PCH_SPLIT(dev
))
1060 lvds
= I915_READ(LVDS
);
1061 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1062 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1064 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1065 intel_lvds
->fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1066 if (intel_lvds
->fixed_mode
) {
1067 intel_lvds
->fixed_mode
->type
|=
1068 DRM_MODE_TYPE_PREFERRED
;
1073 /* If we still don't have a mode after all that, give up. */
1074 if (!intel_lvds
->fixed_mode
)
1079 * Unlock registers and just
1080 * leave them unlocked
1082 if (HAS_PCH_SPLIT(dev
)) {
1083 I915_WRITE(PCH_PP_CONTROL
,
1084 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1086 I915_WRITE(PP_CONTROL
,
1087 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1089 dev_priv
->lid_notifier
.notifier_call
= intel_lid_notify
;
1090 if (acpi_lid_notifier_register(&dev_priv
->lid_notifier
)) {
1091 DRM_DEBUG_KMS("lid notifier registration failed\n");
1092 dev_priv
->lid_notifier
.notifier_call
= NULL
;
1094 /* keep the LVDS connector */
1095 dev_priv
->int_lvds_connector
= connector
;
1096 drm_sysfs_connector_add(connector
);
1098 intel_panel_setup_backlight(dev
);
1103 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1104 drm_connector_cleanup(connector
);
1105 drm_encoder_cleanup(encoder
);
1107 kfree(intel_connector
);