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>
35 #include <drm/drm_crtc.h>
36 #include <drm/drm_edid.h>
37 #include "intel_drv.h"
38 #include <drm/i915_drm.h>
40 #include <linux/acpi.h>
42 /* Private structure for the integrated LVDS support */
43 struct intel_lvds_connector
{
44 struct intel_connector base
;
46 struct notifier_block lid_notifier
;
49 struct intel_lvds_encoder
{
50 struct intel_encoder base
;
56 struct intel_lvds_connector
*attached_connector
;
59 static struct intel_lvds_encoder
*to_lvds_encoder(struct drm_encoder
*encoder
)
61 return container_of(encoder
, struct intel_lvds_encoder
, base
.base
);
64 static struct intel_lvds_connector
*to_lvds_connector(struct drm_connector
*connector
)
66 return container_of(connector
, struct intel_lvds_connector
, base
.base
);
69 static bool intel_lvds_get_hw_state(struct intel_encoder
*encoder
,
72 struct drm_device
*dev
= encoder
->base
.dev
;
73 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
76 if (HAS_PCH_SPLIT(dev
)) {
82 tmp
= I915_READ(lvds_reg
);
84 if (!(tmp
& LVDS_PORT_EN
))
88 *pipe
= PORT_TO_PIPE_CPT(tmp
);
90 *pipe
= PORT_TO_PIPE(tmp
);
96 * Sets the power state for the panel.
98 static void intel_enable_lvds(struct intel_encoder
*encoder
)
100 struct drm_device
*dev
= encoder
->base
.dev
;
101 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
102 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
103 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
104 u32 ctl_reg
, lvds_reg
, stat_reg
;
106 if (HAS_PCH_SPLIT(dev
)) {
107 ctl_reg
= PCH_PP_CONTROL
;
109 stat_reg
= PCH_PP_STATUS
;
111 ctl_reg
= PP_CONTROL
;
113 stat_reg
= PP_STATUS
;
116 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) | LVDS_PORT_EN
);
118 if (lvds_encoder
->pfit_dirty
) {
120 * Enable automatic panel scaling so that non-native modes
121 * fill the screen. The panel fitter should only be
122 * adjusted whilst the pipe is disabled, according to
123 * register description and PRM.
125 DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
126 lvds_encoder
->pfit_control
,
127 lvds_encoder
->pfit_pgm_ratios
);
129 I915_WRITE(PFIT_PGM_RATIOS
, lvds_encoder
->pfit_pgm_ratios
);
130 I915_WRITE(PFIT_CONTROL
, lvds_encoder
->pfit_control
);
131 lvds_encoder
->pfit_dirty
= false;
134 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
135 POSTING_READ(lvds_reg
);
136 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
137 DRM_ERROR("timed out waiting for panel to power on\n");
139 intel_panel_enable_backlight(dev
, intel_crtc
->pipe
);
142 static void intel_disable_lvds(struct intel_encoder
*encoder
)
144 struct drm_device
*dev
= encoder
->base
.dev
;
145 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
146 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
147 u32 ctl_reg
, lvds_reg
, stat_reg
;
149 if (HAS_PCH_SPLIT(dev
)) {
150 ctl_reg
= PCH_PP_CONTROL
;
152 stat_reg
= PCH_PP_STATUS
;
154 ctl_reg
= PP_CONTROL
;
156 stat_reg
= PP_STATUS
;
159 intel_panel_disable_backlight(dev
);
161 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
162 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
163 DRM_ERROR("timed out waiting for panel to power off\n");
165 if (lvds_encoder
->pfit_control
) {
166 I915_WRITE(PFIT_CONTROL
, 0);
167 lvds_encoder
->pfit_dirty
= true;
170 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) & ~LVDS_PORT_EN
);
171 POSTING_READ(lvds_reg
);
174 static int intel_lvds_mode_valid(struct drm_connector
*connector
,
175 struct drm_display_mode
*mode
)
177 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
178 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
180 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
182 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
189 centre_horizontally(struct drm_display_mode
*mode
,
192 u32 border
, sync_pos
, blank_width
, sync_width
;
194 /* keep the hsync and hblank widths constant */
195 sync_width
= mode
->crtc_hsync_end
- mode
->crtc_hsync_start
;
196 blank_width
= mode
->crtc_hblank_end
- mode
->crtc_hblank_start
;
197 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
199 border
= (mode
->hdisplay
- width
+ 1) / 2;
200 border
+= border
& 1; /* make the border even */
202 mode
->crtc_hdisplay
= width
;
203 mode
->crtc_hblank_start
= width
+ border
;
204 mode
->crtc_hblank_end
= mode
->crtc_hblank_start
+ blank_width
;
206 mode
->crtc_hsync_start
= mode
->crtc_hblank_start
+ sync_pos
;
207 mode
->crtc_hsync_end
= mode
->crtc_hsync_start
+ sync_width
;
209 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
213 centre_vertically(struct drm_display_mode
*mode
,
216 u32 border
, sync_pos
, blank_width
, sync_width
;
218 /* keep the vsync and vblank widths constant */
219 sync_width
= mode
->crtc_vsync_end
- mode
->crtc_vsync_start
;
220 blank_width
= mode
->crtc_vblank_end
- mode
->crtc_vblank_start
;
221 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
223 border
= (mode
->vdisplay
- height
+ 1) / 2;
225 mode
->crtc_vdisplay
= height
;
226 mode
->crtc_vblank_start
= height
+ border
;
227 mode
->crtc_vblank_end
= mode
->crtc_vblank_start
+ blank_width
;
229 mode
->crtc_vsync_start
= mode
->crtc_vblank_start
+ sync_pos
;
230 mode
->crtc_vsync_end
= mode
->crtc_vsync_start
+ sync_width
;
232 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
235 static inline u32
panel_fitter_scaling(u32 source
, u32 target
)
238 * Floating point operation is not supported. So the FACTOR
239 * is defined, which can avoid the floating point computation
240 * when calculating the panel ratio.
243 #define FACTOR (1 << ACCURACY)
244 u32 ratio
= source
* FACTOR
/ target
;
245 return (FACTOR
* ratio
+ FACTOR
/2) / FACTOR
;
248 static bool intel_lvds_mode_fixup(struct drm_encoder
*encoder
,
249 const struct drm_display_mode
*mode
,
250 struct drm_display_mode
*adjusted_mode
)
252 struct drm_device
*dev
= encoder
->dev
;
253 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
254 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(encoder
);
255 struct intel_connector
*intel_connector
=
256 &lvds_encoder
->attached_connector
->base
;
257 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
258 u32 pfit_control
= 0, pfit_pgm_ratios
= 0, border
= 0;
261 /* Should never happen!! */
262 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
263 DRM_ERROR("Can't support LVDS on pipe A\n");
267 if (intel_encoder_check_is_cloned(&lvds_encoder
->base
))
271 * We have timings from the BIOS for the panel, put them in
272 * to the adjusted mode. The CRTC will be set up for this mode,
273 * with the panel scaling set up to source from the H/VDisplay
274 * of the original mode.
276 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
279 if (HAS_PCH_SPLIT(dev
)) {
280 intel_pch_panel_fitting(dev
,
281 intel_connector
->panel
.fitting_mode
,
282 mode
, adjusted_mode
);
286 /* Native modes don't need fitting */
287 if (adjusted_mode
->hdisplay
== mode
->hdisplay
&&
288 adjusted_mode
->vdisplay
== mode
->vdisplay
)
291 /* 965+ wants fuzzy fitting */
292 if (INTEL_INFO(dev
)->gen
>= 4)
293 pfit_control
|= ((intel_crtc
->pipe
<< PFIT_PIPE_SHIFT
) |
297 * Enable automatic panel scaling for non-native modes so that they fill
298 * the screen. Should be enabled before the pipe is enabled, according
299 * to register description and PRM.
300 * Change the value here to see the borders for debugging
303 I915_WRITE(BCLRPAT(pipe
), 0);
305 drm_mode_set_crtcinfo(adjusted_mode
, 0);
307 switch (intel_connector
->panel
.fitting_mode
) {
308 case DRM_MODE_SCALE_CENTER
:
310 * For centered modes, we have to calculate border widths &
311 * heights and modify the values programmed into the CRTC.
313 centre_horizontally(adjusted_mode
, mode
->hdisplay
);
314 centre_vertically(adjusted_mode
, mode
->vdisplay
);
315 border
= LVDS_BORDER_ENABLE
;
318 case DRM_MODE_SCALE_ASPECT
:
319 /* Scale but preserve the aspect ratio */
320 if (INTEL_INFO(dev
)->gen
>= 4) {
321 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
322 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
324 /* 965+ is easy, it does everything in hw */
325 if (scaled_width
> scaled_height
)
326 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_PILLAR
;
327 else if (scaled_width
< scaled_height
)
328 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_LETTER
;
329 else if (adjusted_mode
->hdisplay
!= mode
->hdisplay
)
330 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_AUTO
;
332 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
333 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
335 * For earlier chips we have to calculate the scaling
336 * ratio by hand and program it into the
337 * PFIT_PGM_RATIO register
339 if (scaled_width
> scaled_height
) { /* pillar */
340 centre_horizontally(adjusted_mode
, scaled_height
/ mode
->vdisplay
);
342 border
= LVDS_BORDER_ENABLE
;
343 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
) {
344 u32 bits
= panel_fitter_scaling(mode
->vdisplay
, adjusted_mode
->vdisplay
);
345 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
346 bits
<< PFIT_VERT_SCALE_SHIFT
);
347 pfit_control
|= (PFIT_ENABLE
|
348 VERT_INTERP_BILINEAR
|
349 HORIZ_INTERP_BILINEAR
);
351 } else if (scaled_width
< scaled_height
) { /* letter */
352 centre_vertically(adjusted_mode
, scaled_width
/ mode
->hdisplay
);
354 border
= LVDS_BORDER_ENABLE
;
355 if (mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
356 u32 bits
= panel_fitter_scaling(mode
->hdisplay
, adjusted_mode
->hdisplay
);
357 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
358 bits
<< PFIT_VERT_SCALE_SHIFT
);
359 pfit_control
|= (PFIT_ENABLE
|
360 VERT_INTERP_BILINEAR
|
361 HORIZ_INTERP_BILINEAR
);
364 /* Aspects match, Let hw scale both directions */
365 pfit_control
|= (PFIT_ENABLE
|
366 VERT_AUTO_SCALE
| HORIZ_AUTO_SCALE
|
367 VERT_INTERP_BILINEAR
|
368 HORIZ_INTERP_BILINEAR
);
372 case DRM_MODE_SCALE_FULLSCREEN
:
374 * Full scaling, even if it changes the aspect ratio.
375 * Fortunately this is all done for us in hw.
377 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
||
378 mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
379 pfit_control
|= PFIT_ENABLE
;
380 if (INTEL_INFO(dev
)->gen
>= 4)
381 pfit_control
|= PFIT_SCALING_AUTO
;
383 pfit_control
|= (VERT_AUTO_SCALE
|
384 VERT_INTERP_BILINEAR
|
386 HORIZ_INTERP_BILINEAR
);
395 /* If not enabling scaling, be consistent and always use 0. */
396 if ((pfit_control
& PFIT_ENABLE
) == 0) {
401 /* Make sure pre-965 set dither correctly */
402 if (INTEL_INFO(dev
)->gen
< 4 && dev_priv
->lvds_dither
)
403 pfit_control
|= PANEL_8TO6_DITHER_ENABLE
;
405 if (pfit_control
!= lvds_encoder
->pfit_control
||
406 pfit_pgm_ratios
!= lvds_encoder
->pfit_pgm_ratios
) {
407 lvds_encoder
->pfit_control
= pfit_control
;
408 lvds_encoder
->pfit_pgm_ratios
= pfit_pgm_ratios
;
409 lvds_encoder
->pfit_dirty
= true;
411 dev_priv
->lvds_border_bits
= border
;
414 * XXX: It would be nice to support lower refresh rates on the
415 * panels to reduce power consumption, and perhaps match the
416 * user's requested refresh rate.
422 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
423 struct drm_display_mode
*mode
,
424 struct drm_display_mode
*adjusted_mode
)
427 * The LVDS pin pair will already have been turned on in the
428 * intel_crtc_mode_set since it has a large impact on the DPLL
434 * Detect the LVDS connection.
436 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
437 * connected and closed means disconnected. We also send hotplug events as
438 * needed, using lid status notification from the input layer.
440 static enum drm_connector_status
441 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
443 struct drm_device
*dev
= connector
->dev
;
444 enum drm_connector_status status
;
446 status
= intel_panel_detect(dev
);
447 if (status
!= connector_status_unknown
)
450 return connector_status_connected
;
454 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
456 static int intel_lvds_get_modes(struct drm_connector
*connector
)
458 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
459 struct drm_device
*dev
= connector
->dev
;
460 struct drm_display_mode
*mode
;
462 /* use cached edid if we have one */
463 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
464 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
466 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
470 drm_mode_probed_add(connector
, mode
);
474 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
476 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
480 /* The GPU hangs up on these systems if modeset is performed on LID open */
481 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
483 .callback
= intel_no_modeset_on_lid_dmi_callback
,
484 .ident
= "Toshiba Tecra A11",
486 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
487 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
491 { } /* terminating entry */
495 * Lid events. Note the use of 'modeset_on_lid':
496 * - we set it on lid close, and reset it on open
497 * - we use it as a "only once" bit (ie we ignore
498 * duplicate events where it was already properly
500 * - the suspend/resume paths will also set it to
501 * zero, since they restore the mode ("lid open").
503 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
506 struct intel_lvds_connector
*lvds_connector
=
507 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
508 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
509 struct drm_device
*dev
= connector
->dev
;
510 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
512 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
516 * check and update the status of LVDS connector after receiving
517 * the LID nofication event.
519 connector
->status
= connector
->funcs
->detect(connector
, false);
521 /* Don't force modeset on machines where it causes a GPU lockup */
522 if (dmi_check_system(intel_no_modeset_on_lid
))
524 if (!acpi_lid_open()) {
525 dev_priv
->modeset_on_lid
= 1;
529 if (!dev_priv
->modeset_on_lid
)
532 dev_priv
->modeset_on_lid
= 0;
534 mutex_lock(&dev
->mode_config
.mutex
);
535 intel_modeset_setup_hw_state(dev
, true);
536 mutex_unlock(&dev
->mode_config
.mutex
);
542 * intel_lvds_destroy - unregister and free LVDS structures
543 * @connector: connector to free
545 * Unregister the DDC bus for this connector then free the driver private
548 static void intel_lvds_destroy(struct drm_connector
*connector
)
550 struct intel_lvds_connector
*lvds_connector
=
551 to_lvds_connector(connector
);
553 if (lvds_connector
->lid_notifier
.notifier_call
)
554 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
556 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
557 kfree(lvds_connector
->base
.edid
);
559 intel_panel_destroy_backlight(connector
->dev
);
560 intel_panel_fini(&lvds_connector
->base
.panel
);
562 drm_sysfs_connector_remove(connector
);
563 drm_connector_cleanup(connector
);
567 static int intel_lvds_set_property(struct drm_connector
*connector
,
568 struct drm_property
*property
,
571 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
572 struct drm_device
*dev
= connector
->dev
;
574 if (property
== dev
->mode_config
.scaling_mode_property
) {
575 struct drm_crtc
*crtc
;
577 if (value
== DRM_MODE_SCALE_NONE
) {
578 DRM_DEBUG_KMS("no scaling not supported\n");
582 if (intel_connector
->panel
.fitting_mode
== value
) {
583 /* the LVDS scaling property is not changed */
586 intel_connector
->panel
.fitting_mode
= value
;
588 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
589 if (crtc
&& crtc
->enabled
) {
591 * If the CRTC is enabled, the display will be changed
592 * according to the new panel fitting mode.
594 intel_set_mode(crtc
, &crtc
->mode
,
595 crtc
->x
, crtc
->y
, crtc
->fb
);
602 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
603 .mode_fixup
= intel_lvds_mode_fixup
,
604 .mode_set
= intel_lvds_mode_set
,
605 .disable
= intel_encoder_noop
,
608 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
609 .get_modes
= intel_lvds_get_modes
,
610 .mode_valid
= intel_lvds_mode_valid
,
611 .best_encoder
= intel_best_encoder
,
614 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
615 .dpms
= intel_connector_dpms
,
616 .detect
= intel_lvds_detect
,
617 .fill_modes
= drm_helper_probe_single_connector_modes
,
618 .set_property
= intel_lvds_set_property
,
619 .destroy
= intel_lvds_destroy
,
622 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
623 .destroy
= intel_encoder_destroy
,
626 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
628 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
632 /* These systems claim to have LVDS, but really don't */
633 static const struct dmi_system_id intel_no_lvds
[] = {
635 .callback
= intel_no_lvds_dmi_callback
,
636 .ident
= "Apple Mac Mini (Core series)",
638 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
639 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
643 .callback
= intel_no_lvds_dmi_callback
,
644 .ident
= "Apple Mac Mini (Core 2 series)",
646 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
647 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
651 .callback
= intel_no_lvds_dmi_callback
,
652 .ident
= "MSI IM-945GSE-A",
654 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
655 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
659 .callback
= intel_no_lvds_dmi_callback
,
660 .ident
= "Dell Studio Hybrid",
662 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
663 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
667 .callback
= intel_no_lvds_dmi_callback
,
668 .ident
= "Dell OptiPlex FX170",
670 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
671 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
675 .callback
= intel_no_lvds_dmi_callback
,
676 .ident
= "AOpen Mini PC",
678 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
679 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
683 .callback
= intel_no_lvds_dmi_callback
,
684 .ident
= "AOpen Mini PC MP915",
686 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
687 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
691 .callback
= intel_no_lvds_dmi_callback
,
692 .ident
= "AOpen i915GMm-HFS",
694 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
695 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
699 .callback
= intel_no_lvds_dmi_callback
,
700 .ident
= "AOpen i45GMx-I",
702 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
703 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
707 .callback
= intel_no_lvds_dmi_callback
,
708 .ident
= "Aopen i945GTt-VFA",
710 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
714 .callback
= intel_no_lvds_dmi_callback
,
715 .ident
= "Clientron U800",
717 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
718 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
722 .callback
= intel_no_lvds_dmi_callback
,
723 .ident
= "Clientron E830",
725 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
726 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
730 .callback
= intel_no_lvds_dmi_callback
,
731 .ident
= "Asus EeeBox PC EB1007",
733 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
734 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
738 .callback
= intel_no_lvds_dmi_callback
,
739 .ident
= "Asus AT5NM10T-I",
741 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
742 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
746 .callback
= intel_no_lvds_dmi_callback
,
747 .ident
= "Hewlett-Packard HP t5740e Thin Client",
749 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
750 DMI_MATCH(DMI_PRODUCT_NAME
, "HP t5740e Thin Client"),
754 .callback
= intel_no_lvds_dmi_callback
,
755 .ident
= "Hewlett-Packard t5745",
757 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
758 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
762 .callback
= intel_no_lvds_dmi_callback
,
763 .ident
= "Hewlett-Packard st5747",
765 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
766 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
770 .callback
= intel_no_lvds_dmi_callback
,
771 .ident
= "MSI Wind Box DC500",
773 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
774 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
778 .callback
= intel_no_lvds_dmi_callback
,
779 .ident
= "Gigabyte GA-D525TUD",
781 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
782 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
786 .callback
= intel_no_lvds_dmi_callback
,
787 .ident
= "Supermicro X7SPA-H",
789 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
790 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
794 { } /* terminating entry */
798 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
800 * @connector: LVDS connector
802 * Find the reduced downclock for LVDS in EDID.
804 static void intel_find_lvds_downclock(struct drm_device
*dev
,
805 struct drm_display_mode
*fixed_mode
,
806 struct drm_connector
*connector
)
808 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
809 struct drm_display_mode
*scan
;
812 temp_downclock
= fixed_mode
->clock
;
813 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
815 * If one mode has the same resolution with the fixed_panel
816 * mode while they have the different refresh rate, it means
817 * that the reduced downclock is found for the LVDS. In such
818 * case we can set the different FPx0/1 to dynamically select
819 * between low and high frequency.
821 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
822 scan
->hsync_start
== fixed_mode
->hsync_start
&&
823 scan
->hsync_end
== fixed_mode
->hsync_end
&&
824 scan
->htotal
== fixed_mode
->htotal
&&
825 scan
->vdisplay
== fixed_mode
->vdisplay
&&
826 scan
->vsync_start
== fixed_mode
->vsync_start
&&
827 scan
->vsync_end
== fixed_mode
->vsync_end
&&
828 scan
->vtotal
== fixed_mode
->vtotal
) {
829 if (scan
->clock
< temp_downclock
) {
831 * The downclock is already found. But we
832 * expect to find the lower downclock.
834 temp_downclock
= scan
->clock
;
838 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
839 /* We found the downclock for LVDS. */
840 dev_priv
->lvds_downclock_avail
= 1;
841 dev_priv
->lvds_downclock
= temp_downclock
;
842 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
843 "Normal clock %dKhz, downclock %dKhz\n",
844 fixed_mode
->clock
, temp_downclock
);
849 * Enumerate the child dev array parsed from VBT to check whether
850 * the LVDS is present.
851 * If it is present, return 1.
852 * If it is not present, return false.
853 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
855 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
858 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
861 if (!dev_priv
->child_dev_num
)
864 for (i
= 0; i
< dev_priv
->child_dev_num
; i
++) {
865 struct child_device_config
*child
= dev_priv
->child_dev
+ i
;
867 /* If the device type is not LFP, continue.
868 * We have to check both the new identifiers as well as the
869 * old for compatibility with some BIOSes.
871 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
872 child
->device_type
!= DEVICE_TYPE_LFP
)
875 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
876 *i2c_pin
= child
->i2c_pin
;
878 /* However, we cannot trust the BIOS writers to populate
879 * the VBT correctly. Since LVDS requires additional
880 * information from AIM blocks, a non-zero addin offset is
881 * a good indicator that the LVDS is actually present.
883 if (child
->addin_offset
)
886 /* But even then some BIOS writers perform some black magic
887 * and instantiate the device without reference to any
888 * additional data. Trust that if the VBT was written into
889 * the OpRegion then they have validated the LVDS's existence.
891 if (dev_priv
->opregion
.vbt
)
898 static bool intel_lvds_supported(struct drm_device
*dev
)
900 /* With the introduction of the PCH we gained a dedicated
901 * LVDS presence pin, use it. */
902 if (HAS_PCH_SPLIT(dev
))
905 /* Otherwise LVDS was only attached to mobile products,
906 * except for the inglorious 830gm */
907 return IS_MOBILE(dev
) && !IS_I830(dev
);
911 * intel_lvds_init - setup LVDS connectors on this device
914 * Create the connector, register the LVDS DDC bus, and try to figure out what
915 * modes we can display on the LVDS panel (if present).
917 bool intel_lvds_init(struct drm_device
*dev
)
919 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
920 struct intel_lvds_encoder
*lvds_encoder
;
921 struct intel_encoder
*intel_encoder
;
922 struct intel_lvds_connector
*lvds_connector
;
923 struct intel_connector
*intel_connector
;
924 struct drm_connector
*connector
;
925 struct drm_encoder
*encoder
;
926 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
927 struct drm_display_mode
*fixed_mode
= NULL
;
929 struct drm_crtc
*crtc
;
934 if (!intel_lvds_supported(dev
))
937 /* Skip init on machines we know falsely report LVDS */
938 if (dmi_check_system(intel_no_lvds
))
941 pin
= GMBUS_PORT_PANEL
;
942 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
943 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
947 if (HAS_PCH_SPLIT(dev
)) {
948 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
950 if (dev_priv
->edp
.support
) {
951 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
956 lvds_encoder
= kzalloc(sizeof(struct intel_lvds_encoder
), GFP_KERNEL
);
960 lvds_connector
= kzalloc(sizeof(struct intel_lvds_connector
), GFP_KERNEL
);
961 if (!lvds_connector
) {
966 lvds_encoder
->attached_connector
= lvds_connector
;
968 if (!HAS_PCH_SPLIT(dev
)) {
969 lvds_encoder
->pfit_control
= I915_READ(PFIT_CONTROL
);
972 intel_encoder
= &lvds_encoder
->base
;
973 encoder
= &intel_encoder
->base
;
974 intel_connector
= &lvds_connector
->base
;
975 connector
= &intel_connector
->base
;
976 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
977 DRM_MODE_CONNECTOR_LVDS
);
979 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
980 DRM_MODE_ENCODER_LVDS
);
982 intel_encoder
->enable
= intel_enable_lvds
;
983 intel_encoder
->disable
= intel_disable_lvds
;
984 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
985 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
987 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
988 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
990 intel_encoder
->cloneable
= false;
991 if (HAS_PCH_SPLIT(dev
))
992 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
993 else if (IS_GEN4(dev
))
994 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
996 intel_encoder
->crtc_mask
= (1 << 1);
998 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
999 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
1000 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
1001 connector
->interlace_allowed
= false;
1002 connector
->doublescan_allowed
= false;
1004 /* create the scaling mode property */
1005 drm_mode_create_scaling_mode_property(dev
);
1006 drm_object_attach_property(&connector
->base
,
1007 dev
->mode_config
.scaling_mode_property
,
1008 DRM_MODE_SCALE_ASPECT
);
1009 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
1012 * 1) check for EDID on DDC
1013 * 2) check for VBT data
1014 * 3) check to see if LVDS is already on
1015 * if none of the above, no panel
1016 * 4) make sure lid is open
1017 * if closed, act like it's not there for now
1021 * Attempt to get the fixed panel mode from DDC. Assume that the
1022 * preferred mode is the right one.
1024 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1026 if (drm_add_edid_modes(connector
, edid
)) {
1027 drm_mode_connector_update_edid_property(connector
,
1031 edid
= ERR_PTR(-EINVAL
);
1034 edid
= ERR_PTR(-ENOENT
);
1036 lvds_connector
->base
.edid
= edid
;
1038 if (IS_ERR_OR_NULL(edid
)) {
1039 /* Didn't get an EDID, so
1040 * Set wide sync ranges so we get all modes
1041 * handed to valid_mode for checking
1043 connector
->display_info
.min_vfreq
= 0;
1044 connector
->display_info
.max_vfreq
= 200;
1045 connector
->display_info
.min_hfreq
= 0;
1046 connector
->display_info
.max_hfreq
= 200;
1049 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1050 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1051 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1052 drm_mode_debug_printmodeline(scan
);
1054 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1056 intel_find_lvds_downclock(dev
, fixed_mode
,
1063 /* Failed to get EDID, what about VBT? */
1064 if (dev_priv
->lfp_lvds_vbt_mode
) {
1065 DRM_DEBUG_KMS("using mode from VBT: ");
1066 drm_mode_debug_printmodeline(dev_priv
->lfp_lvds_vbt_mode
);
1068 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->lfp_lvds_vbt_mode
);
1070 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1076 * If we didn't get EDID, try checking if the panel is already turned
1077 * on. If so, assume that whatever is currently programmed is the
1081 /* Ironlake: FIXME if still fail, not try pipe mode now */
1082 if (HAS_PCH_SPLIT(dev
))
1085 lvds
= I915_READ(LVDS
);
1086 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1087 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1089 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1090 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1092 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1093 drm_mode_debug_printmodeline(fixed_mode
);
1094 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1099 /* If we still don't have a mode after all that, give up. */
1105 * Unlock registers and just
1106 * leave them unlocked
1108 if (HAS_PCH_SPLIT(dev
)) {
1109 I915_WRITE(PCH_PP_CONTROL
,
1110 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1112 I915_WRITE(PP_CONTROL
,
1113 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1115 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1116 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1117 DRM_DEBUG_KMS("lid notifier registration failed\n");
1118 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1120 drm_sysfs_connector_add(connector
);
1122 intel_panel_init(&intel_connector
->panel
, fixed_mode
);
1123 intel_panel_setup_backlight(connector
);
1128 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1129 drm_connector_cleanup(connector
);
1130 drm_encoder_cleanup(encoder
);
1132 drm_mode_destroy(dev
, fixed_mode
);
1133 kfree(lvds_encoder
);
1134 kfree(lvds_connector
);