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
);
68 static bool intel_lvds_get_hw_state(struct intel_encoder
*encoder
,
71 struct drm_device
*dev
= encoder
->base
.dev
;
72 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
75 if (HAS_PCH_SPLIT(dev
)) {
81 tmp
= I915_READ(lvds_reg
);
83 if (!(tmp
& LVDS_PORT_EN
))
87 *pipe
= PORT_TO_PIPE_CPT(tmp
);
89 *pipe
= PORT_TO_PIPE(tmp
);
95 * Sets the power state for the panel.
97 static void intel_enable_lvds(struct intel_encoder
*encoder
)
99 struct drm_device
*dev
= encoder
->base
.dev
;
100 struct intel_lvds
*intel_lvds
= to_intel_lvds(&encoder
->base
);
101 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
102 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
103 u32 ctl_reg
, lvds_reg
, stat_reg
;
105 if (HAS_PCH_SPLIT(dev
)) {
106 ctl_reg
= PCH_PP_CONTROL
;
108 stat_reg
= PCH_PP_STATUS
;
110 ctl_reg
= PP_CONTROL
;
112 stat_reg
= PP_STATUS
;
115 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) | LVDS_PORT_EN
);
117 if (intel_lvds
->pfit_dirty
) {
119 * Enable automatic panel scaling so that non-native modes
120 * fill the screen. The panel fitter should only be
121 * adjusted whilst the pipe is disabled, according to
122 * register description and PRM.
124 DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
125 intel_lvds
->pfit_control
,
126 intel_lvds
->pfit_pgm_ratios
);
128 I915_WRITE(PFIT_PGM_RATIOS
, intel_lvds
->pfit_pgm_ratios
);
129 I915_WRITE(PFIT_CONTROL
, intel_lvds
->pfit_control
);
130 intel_lvds
->pfit_dirty
= false;
133 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
134 POSTING_READ(lvds_reg
);
135 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
136 DRM_ERROR("timed out waiting for panel to power on\n");
138 intel_panel_enable_backlight(dev
, intel_crtc
->pipe
);
141 static void intel_disable_lvds(struct intel_encoder
*encoder
)
143 struct drm_device
*dev
= encoder
->base
.dev
;
144 struct intel_lvds
*intel_lvds
= to_intel_lvds(&encoder
->base
);
145 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
146 u32 ctl_reg
, lvds_reg
, stat_reg
;
148 if (HAS_PCH_SPLIT(dev
)) {
149 ctl_reg
= PCH_PP_CONTROL
;
151 stat_reg
= PCH_PP_STATUS
;
153 ctl_reg
= PP_CONTROL
;
155 stat_reg
= PP_STATUS
;
158 intel_panel_disable_backlight(dev
);
160 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
161 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
162 DRM_ERROR("timed out waiting for panel to power off\n");
164 if (intel_lvds
->pfit_control
) {
165 I915_WRITE(PFIT_CONTROL
, 0);
166 intel_lvds
->pfit_dirty
= true;
169 I915_WRITE(lvds_reg
, I915_READ(lvds_reg
) & ~LVDS_PORT_EN
);
170 POSTING_READ(lvds_reg
);
173 static int intel_lvds_mode_valid(struct drm_connector
*connector
,
174 struct drm_display_mode
*mode
)
176 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
177 struct drm_display_mode
*fixed_mode
= intel_lvds
->fixed_mode
;
179 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
181 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
188 centre_horizontally(struct drm_display_mode
*mode
,
191 u32 border
, sync_pos
, blank_width
, sync_width
;
193 /* keep the hsync and hblank widths constant */
194 sync_width
= mode
->crtc_hsync_end
- mode
->crtc_hsync_start
;
195 blank_width
= mode
->crtc_hblank_end
- mode
->crtc_hblank_start
;
196 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
198 border
= (mode
->hdisplay
- width
+ 1) / 2;
199 border
+= border
& 1; /* make the border even */
201 mode
->crtc_hdisplay
= width
;
202 mode
->crtc_hblank_start
= width
+ border
;
203 mode
->crtc_hblank_end
= mode
->crtc_hblank_start
+ blank_width
;
205 mode
->crtc_hsync_start
= mode
->crtc_hblank_start
+ sync_pos
;
206 mode
->crtc_hsync_end
= mode
->crtc_hsync_start
+ sync_width
;
208 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
212 centre_vertically(struct drm_display_mode
*mode
,
215 u32 border
, sync_pos
, blank_width
, sync_width
;
217 /* keep the vsync and vblank widths constant */
218 sync_width
= mode
->crtc_vsync_end
- mode
->crtc_vsync_start
;
219 blank_width
= mode
->crtc_vblank_end
- mode
->crtc_vblank_start
;
220 sync_pos
= (blank_width
- sync_width
+ 1) / 2;
222 border
= (mode
->vdisplay
- height
+ 1) / 2;
224 mode
->crtc_vdisplay
= height
;
225 mode
->crtc_vblank_start
= height
+ border
;
226 mode
->crtc_vblank_end
= mode
->crtc_vblank_start
+ blank_width
;
228 mode
->crtc_vsync_start
= mode
->crtc_vblank_start
+ sync_pos
;
229 mode
->crtc_vsync_end
= mode
->crtc_vsync_start
+ sync_width
;
231 mode
->private_flags
|= INTEL_MODE_CRTC_TIMINGS_SET
;
234 static inline u32
panel_fitter_scaling(u32 source
, u32 target
)
237 * Floating point operation is not supported. So the FACTOR
238 * is defined, which can avoid the floating point computation
239 * when calculating the panel ratio.
242 #define FACTOR (1 << ACCURACY)
243 u32 ratio
= source
* FACTOR
/ target
;
244 return (FACTOR
* ratio
+ FACTOR
/2) / FACTOR
;
247 static bool intel_lvds_mode_fixup(struct drm_encoder
*encoder
,
248 const struct drm_display_mode
*mode
,
249 struct drm_display_mode
*adjusted_mode
)
251 struct drm_device
*dev
= encoder
->dev
;
252 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
253 struct intel_lvds
*intel_lvds
= to_intel_lvds(encoder
);
254 struct intel_crtc
*intel_crtc
= intel_lvds
->base
.new_crtc
;
255 u32 pfit_control
= 0, pfit_pgm_ratios
= 0, border
= 0;
258 /* Should never happen!! */
259 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
260 DRM_ERROR("Can't support LVDS on pipe A\n");
264 if (intel_encoder_check_is_cloned(&intel_lvds
->base
))
268 * We have timings from the BIOS for the panel, put them in
269 * to the adjusted mode. The CRTC will be set up for this mode,
270 * with the panel scaling set up to source from the H/VDisplay
271 * of the original mode.
273 intel_fixed_panel_mode(intel_lvds
->fixed_mode
, adjusted_mode
);
275 if (HAS_PCH_SPLIT(dev
)) {
276 intel_pch_panel_fitting(dev
, intel_lvds
->fitting_mode
,
277 mode
, adjusted_mode
);
281 /* Native modes don't need fitting */
282 if (adjusted_mode
->hdisplay
== mode
->hdisplay
&&
283 adjusted_mode
->vdisplay
== mode
->vdisplay
)
286 /* 965+ wants fuzzy fitting */
287 if (INTEL_INFO(dev
)->gen
>= 4)
288 pfit_control
|= ((intel_crtc
->pipe
<< PFIT_PIPE_SHIFT
) |
292 * Enable automatic panel scaling for non-native modes so that they fill
293 * the screen. Should be enabled before the pipe is enabled, according
294 * to register description and PRM.
295 * Change the value here to see the borders for debugging
298 I915_WRITE(BCLRPAT(pipe
), 0);
300 drm_mode_set_crtcinfo(adjusted_mode
, 0);
302 switch (intel_lvds
->fitting_mode
) {
303 case DRM_MODE_SCALE_CENTER
:
305 * For centered modes, we have to calculate border widths &
306 * heights and modify the values programmed into the CRTC.
308 centre_horizontally(adjusted_mode
, mode
->hdisplay
);
309 centre_vertically(adjusted_mode
, mode
->vdisplay
);
310 border
= LVDS_BORDER_ENABLE
;
313 case DRM_MODE_SCALE_ASPECT
:
314 /* Scale but preserve the aspect ratio */
315 if (INTEL_INFO(dev
)->gen
>= 4) {
316 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
317 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
319 /* 965+ is easy, it does everything in hw */
320 if (scaled_width
> scaled_height
)
321 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_PILLAR
;
322 else if (scaled_width
< scaled_height
)
323 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_LETTER
;
324 else if (adjusted_mode
->hdisplay
!= mode
->hdisplay
)
325 pfit_control
|= PFIT_ENABLE
| PFIT_SCALING_AUTO
;
327 u32 scaled_width
= adjusted_mode
->hdisplay
* mode
->vdisplay
;
328 u32 scaled_height
= mode
->hdisplay
* adjusted_mode
->vdisplay
;
330 * For earlier chips we have to calculate the scaling
331 * ratio by hand and program it into the
332 * PFIT_PGM_RATIO register
334 if (scaled_width
> scaled_height
) { /* pillar */
335 centre_horizontally(adjusted_mode
, scaled_height
/ mode
->vdisplay
);
337 border
= LVDS_BORDER_ENABLE
;
338 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
) {
339 u32 bits
= panel_fitter_scaling(mode
->vdisplay
, adjusted_mode
->vdisplay
);
340 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
341 bits
<< PFIT_VERT_SCALE_SHIFT
);
342 pfit_control
|= (PFIT_ENABLE
|
343 VERT_INTERP_BILINEAR
|
344 HORIZ_INTERP_BILINEAR
);
346 } else if (scaled_width
< scaled_height
) { /* letter */
347 centre_vertically(adjusted_mode
, scaled_width
/ mode
->hdisplay
);
349 border
= LVDS_BORDER_ENABLE
;
350 if (mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
351 u32 bits
= panel_fitter_scaling(mode
->hdisplay
, adjusted_mode
->hdisplay
);
352 pfit_pgm_ratios
|= (bits
<< PFIT_HORIZ_SCALE_SHIFT
|
353 bits
<< PFIT_VERT_SCALE_SHIFT
);
354 pfit_control
|= (PFIT_ENABLE
|
355 VERT_INTERP_BILINEAR
|
356 HORIZ_INTERP_BILINEAR
);
359 /* Aspects match, Let hw scale both directions */
360 pfit_control
|= (PFIT_ENABLE
|
361 VERT_AUTO_SCALE
| HORIZ_AUTO_SCALE
|
362 VERT_INTERP_BILINEAR
|
363 HORIZ_INTERP_BILINEAR
);
367 case DRM_MODE_SCALE_FULLSCREEN
:
369 * Full scaling, even if it changes the aspect ratio.
370 * Fortunately this is all done for us in hw.
372 if (mode
->vdisplay
!= adjusted_mode
->vdisplay
||
373 mode
->hdisplay
!= adjusted_mode
->hdisplay
) {
374 pfit_control
|= PFIT_ENABLE
;
375 if (INTEL_INFO(dev
)->gen
>= 4)
376 pfit_control
|= PFIT_SCALING_AUTO
;
378 pfit_control
|= (VERT_AUTO_SCALE
|
379 VERT_INTERP_BILINEAR
|
381 HORIZ_INTERP_BILINEAR
);
390 /* If not enabling scaling, be consistent and always use 0. */
391 if ((pfit_control
& PFIT_ENABLE
) == 0) {
396 /* Make sure pre-965 set dither correctly */
397 if (INTEL_INFO(dev
)->gen
< 4 && dev_priv
->lvds_dither
)
398 pfit_control
|= PANEL_8TO6_DITHER_ENABLE
;
400 if (pfit_control
!= intel_lvds
->pfit_control
||
401 pfit_pgm_ratios
!= intel_lvds
->pfit_pgm_ratios
) {
402 intel_lvds
->pfit_control
= pfit_control
;
403 intel_lvds
->pfit_pgm_ratios
= pfit_pgm_ratios
;
404 intel_lvds
->pfit_dirty
= true;
406 dev_priv
->lvds_border_bits
= border
;
409 * XXX: It would be nice to support lower refresh rates on the
410 * panels to reduce power consumption, and perhaps match the
411 * user's requested refresh rate.
417 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
418 struct drm_display_mode
*mode
,
419 struct drm_display_mode
*adjusted_mode
)
422 * The LVDS pin pair will already have been turned on in the
423 * intel_crtc_mode_set since it has a large impact on the DPLL
429 * Detect the LVDS connection.
431 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
432 * connected and closed means disconnected. We also send hotplug events as
433 * needed, using lid status notification from the input layer.
435 static enum drm_connector_status
436 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
438 struct drm_device
*dev
= connector
->dev
;
439 enum drm_connector_status status
;
441 status
= intel_panel_detect(dev
);
442 if (status
!= connector_status_unknown
)
445 return connector_status_connected
;
449 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
451 static int intel_lvds_get_modes(struct drm_connector
*connector
)
453 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
454 struct drm_device
*dev
= connector
->dev
;
455 struct drm_display_mode
*mode
;
457 if (intel_lvds
->edid
)
458 return drm_add_edid_modes(connector
, intel_lvds
->edid
);
460 mode
= drm_mode_duplicate(dev
, intel_lvds
->fixed_mode
);
464 drm_mode_probed_add(connector
, mode
);
468 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
470 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
474 /* The GPU hangs up on these systems if modeset is performed on LID open */
475 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
477 .callback
= intel_no_modeset_on_lid_dmi_callback
,
478 .ident
= "Toshiba Tecra A11",
480 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
481 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
485 { } /* terminating entry */
489 * Lid events. Note the use of 'modeset_on_lid':
490 * - we set it on lid close, and reset it on open
491 * - we use it as a "only once" bit (ie we ignore
492 * duplicate events where it was already properly
494 * - the suspend/resume paths will also set it to
495 * zero, since they restore the mode ("lid open").
497 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
500 struct drm_i915_private
*dev_priv
=
501 container_of(nb
, struct drm_i915_private
, lid_notifier
);
502 struct drm_device
*dev
= dev_priv
->dev
;
503 struct drm_connector
*connector
= dev_priv
->int_lvds_connector
;
505 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
509 * check and update the status of LVDS connector after receiving
510 * the LID nofication event.
513 connector
->status
= connector
->funcs
->detect(connector
,
516 /* Don't force modeset on machines where it causes a GPU lockup */
517 if (dmi_check_system(intel_no_modeset_on_lid
))
519 if (!acpi_lid_open()) {
520 dev_priv
->modeset_on_lid
= 1;
524 if (!dev_priv
->modeset_on_lid
)
527 dev_priv
->modeset_on_lid
= 0;
529 mutex_lock(&dev
->mode_config
.mutex
);
530 intel_modeset_check_state(dev
);
531 mutex_unlock(&dev
->mode_config
.mutex
);
537 * intel_lvds_destroy - unregister and free LVDS structures
538 * @connector: connector to free
540 * Unregister the DDC bus for this connector then free the driver private
543 static void intel_lvds_destroy(struct drm_connector
*connector
)
545 struct drm_device
*dev
= connector
->dev
;
546 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
548 intel_panel_destroy_backlight(dev
);
550 if (dev_priv
->lid_notifier
.notifier_call
)
551 acpi_lid_notifier_unregister(&dev_priv
->lid_notifier
);
552 drm_sysfs_connector_remove(connector
);
553 drm_connector_cleanup(connector
);
557 static int intel_lvds_set_property(struct drm_connector
*connector
,
558 struct drm_property
*property
,
561 struct intel_lvds
*intel_lvds
= intel_attached_lvds(connector
);
562 struct drm_device
*dev
= connector
->dev
;
564 if (property
== dev
->mode_config
.scaling_mode_property
) {
565 struct drm_crtc
*crtc
= intel_lvds
->base
.base
.crtc
;
567 if (value
== DRM_MODE_SCALE_NONE
) {
568 DRM_DEBUG_KMS("no scaling not supported\n");
572 if (intel_lvds
->fitting_mode
== value
) {
573 /* the LVDS scaling property is not changed */
576 intel_lvds
->fitting_mode
= value
;
577 if (crtc
&& crtc
->enabled
) {
579 * If the CRTC is enabled, the display will be changed
580 * according to the new panel fitting mode.
582 intel_set_mode(crtc
, &crtc
->mode
,
583 crtc
->x
, crtc
->y
, crtc
->fb
);
590 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
591 .mode_fixup
= intel_lvds_mode_fixup
,
592 .mode_set
= intel_lvds_mode_set
,
593 .disable
= intel_encoder_noop
,
596 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
597 .get_modes
= intel_lvds_get_modes
,
598 .mode_valid
= intel_lvds_mode_valid
,
599 .best_encoder
= intel_best_encoder
,
602 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
603 .dpms
= intel_connector_dpms
,
604 .detect
= intel_lvds_detect
,
605 .fill_modes
= drm_helper_probe_single_connector_modes
,
606 .set_property
= intel_lvds_set_property
,
607 .destroy
= intel_lvds_destroy
,
610 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
611 .destroy
= intel_encoder_destroy
,
614 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
616 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
620 /* These systems claim to have LVDS, but really don't */
621 static const struct dmi_system_id intel_no_lvds
[] = {
623 .callback
= intel_no_lvds_dmi_callback
,
624 .ident
= "Apple Mac Mini (Core series)",
626 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
627 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
631 .callback
= intel_no_lvds_dmi_callback
,
632 .ident
= "Apple Mac Mini (Core 2 series)",
634 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
635 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
639 .callback
= intel_no_lvds_dmi_callback
,
640 .ident
= "MSI IM-945GSE-A",
642 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
643 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
647 .callback
= intel_no_lvds_dmi_callback
,
648 .ident
= "Dell Studio Hybrid",
650 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
651 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
655 .callback
= intel_no_lvds_dmi_callback
,
656 .ident
= "Dell OptiPlex FX170",
658 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
659 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
663 .callback
= intel_no_lvds_dmi_callback
,
664 .ident
= "AOpen Mini PC",
666 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
667 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
671 .callback
= intel_no_lvds_dmi_callback
,
672 .ident
= "AOpen Mini PC MP915",
674 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
675 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
679 .callback
= intel_no_lvds_dmi_callback
,
680 .ident
= "AOpen i915GMm-HFS",
682 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
683 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
687 .callback
= intel_no_lvds_dmi_callback
,
688 .ident
= "AOpen i45GMx-I",
690 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
691 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
695 .callback
= intel_no_lvds_dmi_callback
,
696 .ident
= "Aopen i945GTt-VFA",
698 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
702 .callback
= intel_no_lvds_dmi_callback
,
703 .ident
= "Clientron U800",
705 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
706 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
710 .callback
= intel_no_lvds_dmi_callback
,
711 .ident
= "Clientron E830",
713 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
714 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
718 .callback
= intel_no_lvds_dmi_callback
,
719 .ident
= "Asus EeeBox PC EB1007",
721 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
722 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
726 .callback
= intel_no_lvds_dmi_callback
,
727 .ident
= "Asus AT5NM10T-I",
729 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
730 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
734 .callback
= intel_no_lvds_dmi_callback
,
735 .ident
= "Hewlett-Packard HP t5740e Thin Client",
737 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
738 DMI_MATCH(DMI_PRODUCT_NAME
, "HP t5740e Thin Client"),
742 .callback
= intel_no_lvds_dmi_callback
,
743 .ident
= "Hewlett-Packard t5745",
745 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
746 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
750 .callback
= intel_no_lvds_dmi_callback
,
751 .ident
= "Hewlett-Packard st5747",
753 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
754 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
758 .callback
= intel_no_lvds_dmi_callback
,
759 .ident
= "MSI Wind Box DC500",
761 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
762 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
766 .callback
= intel_no_lvds_dmi_callback
,
767 .ident
= "ZOTAC ZBOXSD-ID12/ID13",
769 DMI_MATCH(DMI_BOARD_VENDOR
, "ZOTAC"),
770 DMI_MATCH(DMI_BOARD_NAME
, "ZBOXSD-ID12/ID13"),
774 { } /* terminating entry */
778 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
780 * @connector: LVDS connector
782 * Find the reduced downclock for LVDS in EDID.
784 static void intel_find_lvds_downclock(struct drm_device
*dev
,
785 struct drm_display_mode
*fixed_mode
,
786 struct drm_connector
*connector
)
788 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
789 struct drm_display_mode
*scan
;
792 temp_downclock
= fixed_mode
->clock
;
793 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
795 * If one mode has the same resolution with the fixed_panel
796 * mode while they have the different refresh rate, it means
797 * that the reduced downclock is found for the LVDS. In such
798 * case we can set the different FPx0/1 to dynamically select
799 * between low and high frequency.
801 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
802 scan
->hsync_start
== fixed_mode
->hsync_start
&&
803 scan
->hsync_end
== fixed_mode
->hsync_end
&&
804 scan
->htotal
== fixed_mode
->htotal
&&
805 scan
->vdisplay
== fixed_mode
->vdisplay
&&
806 scan
->vsync_start
== fixed_mode
->vsync_start
&&
807 scan
->vsync_end
== fixed_mode
->vsync_end
&&
808 scan
->vtotal
== fixed_mode
->vtotal
) {
809 if (scan
->clock
< temp_downclock
) {
811 * The downclock is already found. But we
812 * expect to find the lower downclock.
814 temp_downclock
= scan
->clock
;
818 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
819 /* We found the downclock for LVDS. */
820 dev_priv
->lvds_downclock_avail
= 1;
821 dev_priv
->lvds_downclock
= temp_downclock
;
822 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
823 "Normal clock %dKhz, downclock %dKhz\n",
824 fixed_mode
->clock
, temp_downclock
);
829 * Enumerate the child dev array parsed from VBT to check whether
830 * the LVDS is present.
831 * If it is present, return 1.
832 * If it is not present, return false.
833 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
835 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
838 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
841 if (!dev_priv
->child_dev_num
)
844 for (i
= 0; i
< dev_priv
->child_dev_num
; i
++) {
845 struct child_device_config
*child
= dev_priv
->child_dev
+ i
;
847 /* If the device type is not LFP, continue.
848 * We have to check both the new identifiers as well as the
849 * old for compatibility with some BIOSes.
851 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
852 child
->device_type
!= DEVICE_TYPE_LFP
)
855 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
856 *i2c_pin
= child
->i2c_pin
;
858 /* However, we cannot trust the BIOS writers to populate
859 * the VBT correctly. Since LVDS requires additional
860 * information from AIM blocks, a non-zero addin offset is
861 * a good indicator that the LVDS is actually present.
863 if (child
->addin_offset
)
866 /* But even then some BIOS writers perform some black magic
867 * and instantiate the device without reference to any
868 * additional data. Trust that if the VBT was written into
869 * the OpRegion then they have validated the LVDS's existence.
871 if (dev_priv
->opregion
.vbt
)
878 static bool intel_lvds_supported(struct drm_device
*dev
)
880 /* With the introduction of the PCH we gained a dedicated
881 * LVDS presence pin, use it. */
882 if (HAS_PCH_SPLIT(dev
))
885 /* Otherwise LVDS was only attached to mobile products,
886 * except for the inglorious 830gm */
887 return IS_MOBILE(dev
) && !IS_I830(dev
);
891 * intel_lvds_init - setup LVDS connectors on this device
894 * Create the connector, register the LVDS DDC bus, and try to figure out what
895 * modes we can display on the LVDS panel (if present).
897 bool intel_lvds_init(struct drm_device
*dev
)
899 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
900 struct intel_lvds
*intel_lvds
;
901 struct intel_encoder
*intel_encoder
;
902 struct intel_connector
*intel_connector
;
903 struct drm_connector
*connector
;
904 struct drm_encoder
*encoder
;
905 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
906 struct drm_crtc
*crtc
;
911 if (!intel_lvds_supported(dev
))
914 /* Skip init on machines we know falsely report LVDS */
915 if (dmi_check_system(intel_no_lvds
))
918 pin
= GMBUS_PORT_PANEL
;
919 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
920 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
924 if (HAS_PCH_SPLIT(dev
)) {
925 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
927 if (dev_priv
->edp
.support
) {
928 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
933 intel_lvds
= kzalloc(sizeof(struct intel_lvds
), GFP_KERNEL
);
938 intel_connector
= kzalloc(sizeof(struct intel_connector
), GFP_KERNEL
);
939 if (!intel_connector
) {
944 if (!HAS_PCH_SPLIT(dev
)) {
945 intel_lvds
->pfit_control
= I915_READ(PFIT_CONTROL
);
948 intel_encoder
= &intel_lvds
->base
;
949 encoder
= &intel_encoder
->base
;
950 connector
= &intel_connector
->base
;
951 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
952 DRM_MODE_CONNECTOR_LVDS
);
954 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
955 DRM_MODE_ENCODER_LVDS
);
957 intel_encoder
->enable
= intel_enable_lvds
;
958 intel_encoder
->disable
= intel_disable_lvds
;
959 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
960 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
962 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
963 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
965 intel_encoder
->cloneable
= false;
966 if (HAS_PCH_SPLIT(dev
))
967 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
968 else if (IS_GEN4(dev
))
969 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
971 intel_encoder
->crtc_mask
= (1 << 1);
973 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
974 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
975 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
976 connector
->interlace_allowed
= false;
977 connector
->doublescan_allowed
= false;
979 /* create the scaling mode property */
980 drm_mode_create_scaling_mode_property(dev
);
982 * the initial panel fitting mode will be FULL_SCREEN.
985 drm_connector_attach_property(&intel_connector
->base
,
986 dev
->mode_config
.scaling_mode_property
,
987 DRM_MODE_SCALE_ASPECT
);
988 intel_lvds
->fitting_mode
= DRM_MODE_SCALE_ASPECT
;
991 * 1) check for EDID on DDC
992 * 2) check for VBT data
993 * 3) check to see if LVDS is already on
994 * if none of the above, no panel
995 * 4) make sure lid is open
996 * if closed, act like it's not there for now
1000 * Attempt to get the fixed panel mode from DDC. Assume that the
1001 * preferred mode is the right one.
1003 intel_lvds
->edid
= drm_get_edid(connector
,
1004 intel_gmbus_get_adapter(dev_priv
,
1006 if (intel_lvds
->edid
) {
1007 if (drm_add_edid_modes(connector
,
1008 intel_lvds
->edid
)) {
1009 drm_mode_connector_update_edid_property(connector
,
1012 kfree(intel_lvds
->edid
);
1013 intel_lvds
->edid
= NULL
;
1016 if (!intel_lvds
->edid
) {
1017 /* Didn't get an EDID, so
1018 * Set wide sync ranges so we get all modes
1019 * handed to valid_mode for checking
1021 connector
->display_info
.min_vfreq
= 0;
1022 connector
->display_info
.max_vfreq
= 200;
1023 connector
->display_info
.min_hfreq
= 0;
1024 connector
->display_info
.max_hfreq
= 200;
1027 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1028 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1029 intel_lvds
->fixed_mode
=
1030 drm_mode_duplicate(dev
, scan
);
1031 intel_find_lvds_downclock(dev
,
1032 intel_lvds
->fixed_mode
,
1038 /* Failed to get EDID, what about VBT? */
1039 if (dev_priv
->lfp_lvds_vbt_mode
) {
1040 intel_lvds
->fixed_mode
=
1041 drm_mode_duplicate(dev
, dev_priv
->lfp_lvds_vbt_mode
);
1042 if (intel_lvds
->fixed_mode
) {
1043 intel_lvds
->fixed_mode
->type
|=
1044 DRM_MODE_TYPE_PREFERRED
;
1050 * If we didn't get EDID, try checking if the panel is already turned
1051 * on. If so, assume that whatever is currently programmed is the
1055 /* Ironlake: FIXME if still fail, not try pipe mode now */
1056 if (HAS_PCH_SPLIT(dev
))
1059 lvds
= I915_READ(LVDS
);
1060 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1061 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1063 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1064 intel_lvds
->fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1065 if (intel_lvds
->fixed_mode
) {
1066 intel_lvds
->fixed_mode
->type
|=
1067 DRM_MODE_TYPE_PREFERRED
;
1072 /* If we still don't have a mode after all that, give up. */
1073 if (!intel_lvds
->fixed_mode
)
1078 * Unlock registers and just
1079 * leave them unlocked
1081 if (HAS_PCH_SPLIT(dev
)) {
1082 I915_WRITE(PCH_PP_CONTROL
,
1083 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1085 I915_WRITE(PP_CONTROL
,
1086 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1088 dev_priv
->lid_notifier
.notifier_call
= intel_lid_notify
;
1089 if (acpi_lid_notifier_register(&dev_priv
->lid_notifier
)) {
1090 DRM_DEBUG_KMS("lid notifier registration failed\n");
1091 dev_priv
->lid_notifier
.notifier_call
= NULL
;
1093 /* keep the LVDS connector */
1094 dev_priv
->int_lvds_connector
= connector
;
1095 drm_sysfs_connector_add(connector
);
1097 intel_panel_setup_backlight(dev
);
1102 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1103 drm_connector_cleanup(connector
);
1104 drm_encoder_cleanup(encoder
);
1106 kfree(intel_connector
);