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
;
55 struct intel_lvds_connector
*attached_connector
;
58 static struct intel_lvds_encoder
*to_lvds_encoder(struct drm_encoder
*encoder
)
60 return container_of(encoder
, struct intel_lvds_encoder
, base
.base
);
63 static struct intel_lvds_connector
*to_lvds_connector(struct drm_connector
*connector
)
65 return container_of(connector
, struct intel_lvds_connector
, base
.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
;
73 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
76 tmp
= I915_READ(lvds_encoder
->reg
);
78 if (!(tmp
& LVDS_PORT_EN
))
82 *pipe
= PORT_TO_PIPE_CPT(tmp
);
84 *pipe
= PORT_TO_PIPE(tmp
);
89 static void intel_lvds_get_config(struct intel_encoder
*encoder
,
90 struct intel_crtc_config
*pipe_config
)
92 struct drm_device
*dev
= encoder
->base
.dev
;
93 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
94 u32 lvds_reg
, tmp
, flags
= 0;
96 if (HAS_PCH_SPLIT(dev
))
101 tmp
= I915_READ(lvds_reg
);
102 if (tmp
& LVDS_HSYNC_POLARITY
)
103 flags
|= DRM_MODE_FLAG_NHSYNC
;
105 flags
|= DRM_MODE_FLAG_PHSYNC
;
106 if (tmp
& LVDS_VSYNC_POLARITY
)
107 flags
|= DRM_MODE_FLAG_NVSYNC
;
109 flags
|= DRM_MODE_FLAG_PVSYNC
;
111 pipe_config
->adjusted_mode
.flags
|= flags
;
114 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
115 * This is an exception to the general rule that mode_set doesn't turn
118 static void intel_pre_pll_enable_lvds(struct intel_encoder
*encoder
)
120 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
121 struct drm_device
*dev
= encoder
->base
.dev
;
122 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
123 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
124 struct drm_display_mode
*fixed_mode
=
125 lvds_encoder
->attached_connector
->base
.panel
.fixed_mode
;
126 int pipe
= intel_crtc
->pipe
;
129 temp
= I915_READ(lvds_encoder
->reg
);
130 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
132 if (HAS_PCH_CPT(dev
)) {
133 temp
&= ~PORT_TRANS_SEL_MASK
;
134 temp
|= PORT_TRANS_SEL_CPT(pipe
);
137 temp
|= LVDS_PIPEB_SELECT
;
139 temp
&= ~LVDS_PIPEB_SELECT
;
143 /* set the corresponsding LVDS_BORDER bit */
144 temp
&= ~LVDS_BORDER_ENABLE
;
145 temp
|= intel_crtc
->config
.gmch_pfit
.lvds_border_bits
;
146 /* Set the B0-B3 data pairs corresponding to whether we're going to
147 * set the DPLLs for dual-channel mode or not.
149 if (lvds_encoder
->is_dual_link
)
150 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
152 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
154 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
155 * appropriately here, but we need to look more thoroughly into how
156 * panels behave in the two modes.
159 /* Set the dithering flag on LVDS as needed, note that there is no
160 * special lvds dither control bit on pch-split platforms, dithering is
161 * only controlled through the PIPECONF reg. */
162 if (INTEL_INFO(dev
)->gen
== 4) {
163 /* Bspec wording suggests that LVDS port dithering only exists
164 * for 18bpp panels. */
165 if (intel_crtc
->config
.dither
&&
166 intel_crtc
->config
.pipe_bpp
== 18)
167 temp
|= LVDS_ENABLE_DITHER
;
169 temp
&= ~LVDS_ENABLE_DITHER
;
171 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
172 if (fixed_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
173 temp
|= LVDS_HSYNC_POLARITY
;
174 if (fixed_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
175 temp
|= LVDS_VSYNC_POLARITY
;
177 I915_WRITE(lvds_encoder
->reg
, temp
);
181 * Sets the power state for the panel.
183 static void intel_enable_lvds(struct intel_encoder
*encoder
)
185 struct drm_device
*dev
= encoder
->base
.dev
;
186 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
187 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
188 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
189 u32 ctl_reg
, stat_reg
;
191 if (HAS_PCH_SPLIT(dev
)) {
192 ctl_reg
= PCH_PP_CONTROL
;
193 stat_reg
= PCH_PP_STATUS
;
195 ctl_reg
= PP_CONTROL
;
196 stat_reg
= PP_STATUS
;
199 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
201 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
202 POSTING_READ(lvds_encoder
->reg
);
203 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
204 DRM_ERROR("timed out waiting for panel to power on\n");
206 intel_panel_enable_backlight(dev
, intel_crtc
->pipe
);
209 static void intel_disable_lvds(struct intel_encoder
*encoder
)
211 struct drm_device
*dev
= encoder
->base
.dev
;
212 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
213 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
214 u32 ctl_reg
, stat_reg
;
216 if (HAS_PCH_SPLIT(dev
)) {
217 ctl_reg
= PCH_PP_CONTROL
;
218 stat_reg
= PCH_PP_STATUS
;
220 ctl_reg
= PP_CONTROL
;
221 stat_reg
= PP_STATUS
;
224 intel_panel_disable_backlight(dev
);
226 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
227 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
228 DRM_ERROR("timed out waiting for panel to power off\n");
230 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
231 POSTING_READ(lvds_encoder
->reg
);
234 static int intel_lvds_mode_valid(struct drm_connector
*connector
,
235 struct drm_display_mode
*mode
)
237 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
238 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
240 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
242 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
248 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
249 struct intel_crtc_config
*pipe_config
)
251 struct drm_device
*dev
= intel_encoder
->base
.dev
;
252 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
253 struct intel_lvds_encoder
*lvds_encoder
=
254 to_lvds_encoder(&intel_encoder
->base
);
255 struct intel_connector
*intel_connector
=
256 &lvds_encoder
->attached_connector
->base
;
257 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
258 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
259 unsigned int lvds_bpp
;
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 ((I915_READ(lvds_encoder
->reg
) & LVDS_A3_POWER_MASK
) ==
273 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
274 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
275 pipe_config
->pipe_bpp
, lvds_bpp
);
276 pipe_config
->pipe_bpp
= lvds_bpp
;
280 * We have timings from the BIOS for the panel, put them in
281 * to the adjusted mode. The CRTC will be set up for this mode,
282 * with the panel scaling set up to source from the H/VDisplay
283 * of the original mode.
285 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
288 if (HAS_PCH_SPLIT(dev
)) {
289 pipe_config
->has_pch_encoder
= true;
291 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
292 intel_connector
->panel
.fitting_mode
);
295 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
296 intel_connector
->panel
.fitting_mode
);
299 drm_mode_set_crtcinfo(adjusted_mode
, 0);
300 pipe_config
->timings_set
= true;
303 * XXX: It would be nice to support lower refresh rates on the
304 * panels to reduce power consumption, and perhaps match the
305 * user's requested refresh rate.
311 static void intel_lvds_mode_set(struct drm_encoder
*encoder
,
312 struct drm_display_mode
*mode
,
313 struct drm_display_mode
*adjusted_mode
)
316 * The LVDS pin pair will already have been turned on in the
317 * intel_crtc_mode_set since it has a large impact on the DPLL
323 * Detect the LVDS connection.
325 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
326 * connected and closed means disconnected. We also send hotplug events as
327 * needed, using lid status notification from the input layer.
329 static enum drm_connector_status
330 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
332 struct drm_device
*dev
= connector
->dev
;
333 enum drm_connector_status status
;
335 status
= intel_panel_detect(dev
);
336 if (status
!= connector_status_unknown
)
339 return connector_status_connected
;
343 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
345 static int intel_lvds_get_modes(struct drm_connector
*connector
)
347 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
348 struct drm_device
*dev
= connector
->dev
;
349 struct drm_display_mode
*mode
;
351 /* use cached edid if we have one */
352 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
353 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
355 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
359 drm_mode_probed_add(connector
, mode
);
363 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
365 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
369 /* The GPU hangs up on these systems if modeset is performed on LID open */
370 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
372 .callback
= intel_no_modeset_on_lid_dmi_callback
,
373 .ident
= "Toshiba Tecra A11",
375 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
376 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
380 { } /* terminating entry */
384 * Lid events. Note the use of 'modeset':
385 * - we set it to MODESET_ON_LID_OPEN on lid close,
386 * and set it to MODESET_DONE on open
387 * - we use it as a "only once" bit (ie we ignore
388 * duplicate events where it was already properly set)
389 * - the suspend/resume paths will set it to
390 * MODESET_SUSPENDED and ignore the lid open event,
391 * because they restore the mode ("lid open").
393 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
396 struct intel_lvds_connector
*lvds_connector
=
397 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
398 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
399 struct drm_device
*dev
= connector
->dev
;
400 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
402 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
405 mutex_lock(&dev_priv
->modeset_restore_lock
);
406 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
409 * check and update the status of LVDS connector after receiving
410 * the LID nofication event.
412 connector
->status
= connector
->funcs
->detect(connector
, false);
414 /* Don't force modeset on machines where it causes a GPU lockup */
415 if (dmi_check_system(intel_no_modeset_on_lid
))
417 if (!acpi_lid_open()) {
418 /* do modeset on next lid open event */
419 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
423 if (dev_priv
->modeset_restore
== MODESET_DONE
)
426 drm_modeset_lock_all(dev
);
427 intel_modeset_setup_hw_state(dev
, true);
428 drm_modeset_unlock_all(dev
);
430 dev_priv
->modeset_restore
= MODESET_DONE
;
433 mutex_unlock(&dev_priv
->modeset_restore_lock
);
438 * intel_lvds_destroy - unregister and free LVDS structures
439 * @connector: connector to free
441 * Unregister the DDC bus for this connector then free the driver private
444 static void intel_lvds_destroy(struct drm_connector
*connector
)
446 struct intel_lvds_connector
*lvds_connector
=
447 to_lvds_connector(connector
);
449 if (lvds_connector
->lid_notifier
.notifier_call
)
450 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
452 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
453 kfree(lvds_connector
->base
.edid
);
455 intel_panel_fini(&lvds_connector
->base
.panel
);
457 drm_sysfs_connector_remove(connector
);
458 drm_connector_cleanup(connector
);
462 static int intel_lvds_set_property(struct drm_connector
*connector
,
463 struct drm_property
*property
,
466 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
467 struct drm_device
*dev
= connector
->dev
;
469 if (property
== dev
->mode_config
.scaling_mode_property
) {
470 struct drm_crtc
*crtc
;
472 if (value
== DRM_MODE_SCALE_NONE
) {
473 DRM_DEBUG_KMS("no scaling not supported\n");
477 if (intel_connector
->panel
.fitting_mode
== value
) {
478 /* the LVDS scaling property is not changed */
481 intel_connector
->panel
.fitting_mode
= value
;
483 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
484 if (crtc
&& crtc
->enabled
) {
486 * If the CRTC is enabled, the display will be changed
487 * according to the new panel fitting mode.
489 intel_crtc_restore_mode(crtc
);
496 static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs
= {
497 .mode_set
= intel_lvds_mode_set
,
500 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
501 .get_modes
= intel_lvds_get_modes
,
502 .mode_valid
= intel_lvds_mode_valid
,
503 .best_encoder
= intel_best_encoder
,
506 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
507 .dpms
= intel_connector_dpms
,
508 .detect
= intel_lvds_detect
,
509 .fill_modes
= drm_helper_probe_single_connector_modes
,
510 .set_property
= intel_lvds_set_property
,
511 .destroy
= intel_lvds_destroy
,
514 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
515 .destroy
= intel_encoder_destroy
,
518 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
520 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
524 /* These systems claim to have LVDS, but really don't */
525 static const struct dmi_system_id intel_no_lvds
[] = {
527 .callback
= intel_no_lvds_dmi_callback
,
528 .ident
= "Apple Mac Mini (Core series)",
530 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
531 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
535 .callback
= intel_no_lvds_dmi_callback
,
536 .ident
= "Apple Mac Mini (Core 2 series)",
538 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
539 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
543 .callback
= intel_no_lvds_dmi_callback
,
544 .ident
= "MSI IM-945GSE-A",
546 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
547 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
551 .callback
= intel_no_lvds_dmi_callback
,
552 .ident
= "Dell Studio Hybrid",
554 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
555 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
559 .callback
= intel_no_lvds_dmi_callback
,
560 .ident
= "Dell OptiPlex FX170",
562 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
563 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
567 .callback
= intel_no_lvds_dmi_callback
,
568 .ident
= "AOpen Mini PC",
570 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
571 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
575 .callback
= intel_no_lvds_dmi_callback
,
576 .ident
= "AOpen Mini PC MP915",
578 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
579 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
583 .callback
= intel_no_lvds_dmi_callback
,
584 .ident
= "AOpen i915GMm-HFS",
586 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
587 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
591 .callback
= intel_no_lvds_dmi_callback
,
592 .ident
= "AOpen i45GMx-I",
594 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
595 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
599 .callback
= intel_no_lvds_dmi_callback
,
600 .ident
= "Aopen i945GTt-VFA",
602 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
606 .callback
= intel_no_lvds_dmi_callback
,
607 .ident
= "Clientron U800",
609 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
610 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
614 .callback
= intel_no_lvds_dmi_callback
,
615 .ident
= "Clientron E830",
617 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
618 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
622 .callback
= intel_no_lvds_dmi_callback
,
623 .ident
= "Asus EeeBox PC EB1007",
625 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
626 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
630 .callback
= intel_no_lvds_dmi_callback
,
631 .ident
= "Asus AT5NM10T-I",
633 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
634 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
638 .callback
= intel_no_lvds_dmi_callback
,
639 .ident
= "Hewlett-Packard HP t5740",
641 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
642 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
646 .callback
= intel_no_lvds_dmi_callback
,
647 .ident
= "Hewlett-Packard t5745",
649 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
650 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
654 .callback
= intel_no_lvds_dmi_callback
,
655 .ident
= "Hewlett-Packard st5747",
657 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
658 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
662 .callback
= intel_no_lvds_dmi_callback
,
663 .ident
= "MSI Wind Box DC500",
665 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
666 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
670 .callback
= intel_no_lvds_dmi_callback
,
671 .ident
= "Gigabyte GA-D525TUD",
673 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
674 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
678 .callback
= intel_no_lvds_dmi_callback
,
679 .ident
= "Supermicro X7SPA-H",
681 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
682 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
686 .callback
= intel_no_lvds_dmi_callback
,
687 .ident
= "Fujitsu Esprimo Q900",
689 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
690 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
694 .callback
= intel_no_lvds_dmi_callback
,
695 .ident
= "Intel D510MO",
697 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
698 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
702 .callback
= intel_no_lvds_dmi_callback
,
703 .ident
= "Intel D525MW",
705 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
706 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
710 { } /* terminating entry */
714 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
716 * @connector: LVDS connector
718 * Find the reduced downclock for LVDS in EDID.
720 static void intel_find_lvds_downclock(struct drm_device
*dev
,
721 struct drm_display_mode
*fixed_mode
,
722 struct drm_connector
*connector
)
724 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
725 struct drm_display_mode
*scan
;
728 temp_downclock
= fixed_mode
->clock
;
729 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
731 * If one mode has the same resolution with the fixed_panel
732 * mode while they have the different refresh rate, it means
733 * that the reduced downclock is found for the LVDS. In such
734 * case we can set the different FPx0/1 to dynamically select
735 * between low and high frequency.
737 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
738 scan
->hsync_start
== fixed_mode
->hsync_start
&&
739 scan
->hsync_end
== fixed_mode
->hsync_end
&&
740 scan
->htotal
== fixed_mode
->htotal
&&
741 scan
->vdisplay
== fixed_mode
->vdisplay
&&
742 scan
->vsync_start
== fixed_mode
->vsync_start
&&
743 scan
->vsync_end
== fixed_mode
->vsync_end
&&
744 scan
->vtotal
== fixed_mode
->vtotal
) {
745 if (scan
->clock
< temp_downclock
) {
747 * The downclock is already found. But we
748 * expect to find the lower downclock.
750 temp_downclock
= scan
->clock
;
754 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
755 /* We found the downclock for LVDS. */
756 dev_priv
->lvds_downclock_avail
= 1;
757 dev_priv
->lvds_downclock
= temp_downclock
;
758 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
759 "Normal clock %dKhz, downclock %dKhz\n",
760 fixed_mode
->clock
, temp_downclock
);
765 * Enumerate the child dev array parsed from VBT to check whether
766 * the LVDS is present.
767 * If it is present, return 1.
768 * If it is not present, return false.
769 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
771 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
774 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
777 if (!dev_priv
->vbt
.child_dev_num
)
780 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
781 struct child_device_config
*child
= dev_priv
->vbt
.child_dev
+ i
;
783 /* If the device type is not LFP, continue.
784 * We have to check both the new identifiers as well as the
785 * old for compatibility with some BIOSes.
787 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
788 child
->device_type
!= DEVICE_TYPE_LFP
)
791 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
792 *i2c_pin
= child
->i2c_pin
;
794 /* However, we cannot trust the BIOS writers to populate
795 * the VBT correctly. Since LVDS requires additional
796 * information from AIM blocks, a non-zero addin offset is
797 * a good indicator that the LVDS is actually present.
799 if (child
->addin_offset
)
802 /* But even then some BIOS writers perform some black magic
803 * and instantiate the device without reference to any
804 * additional data. Trust that if the VBT was written into
805 * the OpRegion then they have validated the LVDS's existence.
807 if (dev_priv
->opregion
.vbt
)
814 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
816 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
820 static const struct dmi_system_id intel_dual_link_lvds
[] = {
822 .callback
= intel_dual_link_lvds_callback
,
823 .ident
= "Apple MacBook Pro (Core i5/i7 Series)",
825 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
826 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
829 { } /* terminating entry */
832 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
834 struct intel_encoder
*encoder
;
835 struct intel_lvds_encoder
*lvds_encoder
;
837 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
,
839 if (encoder
->type
== INTEL_OUTPUT_LVDS
) {
840 lvds_encoder
= to_lvds_encoder(&encoder
->base
);
842 return lvds_encoder
->is_dual_link
;
849 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
851 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
853 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
855 /* use the module option value if specified */
856 if (i915_lvds_channel_mode
> 0)
857 return i915_lvds_channel_mode
== 2;
859 if (dmi_check_system(intel_dual_link_lvds
))
862 /* BIOS should set the proper LVDS register value at boot, but
863 * in reality, it doesn't set the value when the lid is closed;
864 * we need to check "the value to be set" in VBT when LVDS
865 * register is uninitialized.
867 val
= I915_READ(lvds_encoder
->reg
);
868 if (!(val
& ~(LVDS_PIPE_MASK
| LVDS_DETECTED
)))
869 val
= dev_priv
->vbt
.bios_lvds_val
;
871 return (val
& LVDS_CLKB_POWER_MASK
) == LVDS_CLKB_POWER_UP
;
874 static bool intel_lvds_supported(struct drm_device
*dev
)
876 /* With the introduction of the PCH we gained a dedicated
877 * LVDS presence pin, use it. */
878 if (HAS_PCH_IBX(dev
) || HAS_PCH_CPT(dev
))
881 /* Otherwise LVDS was only attached to mobile products,
882 * except for the inglorious 830gm */
883 if (INTEL_INFO(dev
)->gen
<= 4 && IS_MOBILE(dev
) && !IS_I830(dev
))
890 * intel_lvds_init - setup LVDS connectors on this device
893 * Create the connector, register the LVDS DDC bus, and try to figure out what
894 * modes we can display on the LVDS panel (if present).
896 void intel_lvds_init(struct drm_device
*dev
)
898 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
899 struct intel_lvds_encoder
*lvds_encoder
;
900 struct intel_encoder
*intel_encoder
;
901 struct intel_lvds_connector
*lvds_connector
;
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_display_mode
*fixed_mode
= NULL
;
908 struct drm_crtc
*crtc
;
913 if (!intel_lvds_supported(dev
))
916 /* Skip init on machines we know falsely report LVDS */
917 if (dmi_check_system(intel_no_lvds
))
920 pin
= GMBUS_PORT_PANEL
;
921 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
922 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
926 if (HAS_PCH_SPLIT(dev
)) {
927 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
929 if (dev_priv
->vbt
.edp_support
) {
930 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
935 lvds_encoder
= kzalloc(sizeof(struct intel_lvds_encoder
), GFP_KERNEL
);
939 lvds_connector
= kzalloc(sizeof(struct intel_lvds_connector
), GFP_KERNEL
);
940 if (!lvds_connector
) {
945 lvds_encoder
->attached_connector
= lvds_connector
;
947 intel_encoder
= &lvds_encoder
->base
;
948 encoder
= &intel_encoder
->base
;
949 intel_connector
= &lvds_connector
->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
->pre_pll_enable
= intel_pre_pll_enable_lvds
;
959 intel_encoder
->compute_config
= intel_lvds_compute_config
;
960 intel_encoder
->disable
= intel_disable_lvds
;
961 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
962 intel_encoder
->get_config
= intel_lvds_get_config
;
963 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
965 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
966 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
968 intel_encoder
->cloneable
= false;
969 if (HAS_PCH_SPLIT(dev
))
970 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
971 else if (IS_GEN4(dev
))
972 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
974 intel_encoder
->crtc_mask
= (1 << 1);
976 drm_encoder_helper_add(encoder
, &intel_lvds_helper_funcs
);
977 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
978 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
979 connector
->interlace_allowed
= false;
980 connector
->doublescan_allowed
= false;
982 if (HAS_PCH_SPLIT(dev
)) {
983 lvds_encoder
->reg
= PCH_LVDS
;
985 lvds_encoder
->reg
= LVDS
;
988 /* create the scaling mode property */
989 drm_mode_create_scaling_mode_property(dev
);
990 drm_object_attach_property(&connector
->base
,
991 dev
->mode_config
.scaling_mode_property
,
992 DRM_MODE_SCALE_ASPECT
);
993 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
996 * 1) check for EDID on DDC
997 * 2) check for VBT data
998 * 3) check to see if LVDS is already on
999 * if none of the above, no panel
1000 * 4) make sure lid is open
1001 * if closed, act like it's not there for now
1005 * Attempt to get the fixed panel mode from DDC. Assume that the
1006 * preferred mode is the right one.
1008 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1010 if (drm_add_edid_modes(connector
, edid
)) {
1011 drm_mode_connector_update_edid_property(connector
,
1015 edid
= ERR_PTR(-EINVAL
);
1018 edid
= ERR_PTR(-ENOENT
);
1020 lvds_connector
->base
.edid
= edid
;
1022 if (IS_ERR_OR_NULL(edid
)) {
1023 /* Didn't get an EDID, so
1024 * Set wide sync ranges so we get all modes
1025 * handed to valid_mode for checking
1027 connector
->display_info
.min_vfreq
= 0;
1028 connector
->display_info
.max_vfreq
= 200;
1029 connector
->display_info
.min_hfreq
= 0;
1030 connector
->display_info
.max_hfreq
= 200;
1033 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1034 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1035 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1036 drm_mode_debug_printmodeline(scan
);
1038 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1040 intel_find_lvds_downclock(dev
, fixed_mode
,
1047 /* Failed to get EDID, what about VBT? */
1048 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1049 DRM_DEBUG_KMS("using mode from VBT: ");
1050 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1052 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1054 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1060 * If we didn't get EDID, try checking if the panel is already turned
1061 * on. If so, assume that whatever is currently programmed is the
1065 /* Ironlake: FIXME if still fail, not try pipe mode now */
1066 if (HAS_PCH_SPLIT(dev
))
1069 lvds
= I915_READ(LVDS
);
1070 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1071 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1073 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1074 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1076 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1077 drm_mode_debug_printmodeline(fixed_mode
);
1078 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1083 /* If we still don't have a mode after all that, give up. */
1088 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1089 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1090 lvds_encoder
->is_dual_link
? "dual" : "single");
1093 * Unlock registers and just
1094 * leave them unlocked
1096 if (HAS_PCH_SPLIT(dev
)) {
1097 I915_WRITE(PCH_PP_CONTROL
,
1098 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1100 I915_WRITE(PP_CONTROL
,
1101 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1103 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1104 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1105 DRM_DEBUG_KMS("lid notifier registration failed\n");
1106 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1108 drm_sysfs_connector_add(connector
);
1110 intel_panel_init(&intel_connector
->panel
, fixed_mode
);
1111 intel_panel_setup_backlight(connector
);
1116 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1117 drm_connector_cleanup(connector
);
1118 drm_encoder_cleanup(encoder
);
1120 drm_mode_destroy(dev
, fixed_mode
);
1121 kfree(lvds_encoder
);
1122 kfree(lvds_connector
);