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
;
74 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
75 enum intel_display_power_domain power_domain
;
78 power_domain
= intel_display_port_power_domain(encoder
);
79 if (!intel_display_power_enabled(dev_priv
, power_domain
))
82 tmp
= I915_READ(lvds_encoder
->reg
);
84 if (!(tmp
& LVDS_PORT_EN
))
88 *pipe
= PORT_TO_PIPE_CPT(tmp
);
90 *pipe
= PORT_TO_PIPE(tmp
);
95 static void intel_lvds_get_config(struct intel_encoder
*encoder
,
96 struct intel_crtc_config
*pipe_config
)
98 struct drm_device
*dev
= encoder
->base
.dev
;
99 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
100 u32 lvds_reg
, tmp
, flags
= 0;
103 if (HAS_PCH_SPLIT(dev
))
108 tmp
= I915_READ(lvds_reg
);
109 if (tmp
& LVDS_HSYNC_POLARITY
)
110 flags
|= DRM_MODE_FLAG_NHSYNC
;
112 flags
|= DRM_MODE_FLAG_PHSYNC
;
113 if (tmp
& LVDS_VSYNC_POLARITY
)
114 flags
|= DRM_MODE_FLAG_NVSYNC
;
116 flags
|= DRM_MODE_FLAG_PVSYNC
;
118 pipe_config
->adjusted_mode
.flags
|= flags
;
120 dotclock
= pipe_config
->port_clock
;
122 if (HAS_PCH_SPLIT(dev_priv
->dev
))
123 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
125 pipe_config
->adjusted_mode
.crtc_clock
= dotclock
;
128 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
130 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
131 struct drm_device
*dev
= encoder
->base
.dev
;
132 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
133 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
134 const struct drm_display_mode
*adjusted_mode
=
135 &crtc
->config
.adjusted_mode
;
136 int pipe
= crtc
->pipe
;
139 if (HAS_PCH_SPLIT(dev
)) {
140 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
141 assert_shared_dpll_disabled(dev_priv
,
142 intel_crtc_to_shared_dpll(crtc
));
144 assert_pll_disabled(dev_priv
, pipe
);
147 temp
= I915_READ(lvds_encoder
->reg
);
148 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
150 if (HAS_PCH_CPT(dev
)) {
151 temp
&= ~PORT_TRANS_SEL_MASK
;
152 temp
|= PORT_TRANS_SEL_CPT(pipe
);
155 temp
|= LVDS_PIPEB_SELECT
;
157 temp
&= ~LVDS_PIPEB_SELECT
;
161 /* set the corresponsding LVDS_BORDER bit */
162 temp
&= ~LVDS_BORDER_ENABLE
;
163 temp
|= crtc
->config
.gmch_pfit
.lvds_border_bits
;
164 /* Set the B0-B3 data pairs corresponding to whether we're going to
165 * set the DPLLs for dual-channel mode or not.
167 if (lvds_encoder
->is_dual_link
)
168 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
170 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
172 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
173 * appropriately here, but we need to look more thoroughly into how
174 * panels behave in the two modes. For now, let's just maintain the
175 * value we got from the BIOS.
177 temp
&= ~LVDS_A3_POWER_MASK
;
178 temp
|= lvds_encoder
->a3_power
;
180 /* Set the dithering flag on LVDS as needed, note that there is no
181 * special lvds dither control bit on pch-split platforms, dithering is
182 * only controlled through the PIPECONF reg. */
183 if (INTEL_INFO(dev
)->gen
== 4) {
184 /* Bspec wording suggests that LVDS port dithering only exists
185 * for 18bpp panels. */
186 if (crtc
->config
.dither
&& crtc
->config
.pipe_bpp
== 18)
187 temp
|= LVDS_ENABLE_DITHER
;
189 temp
&= ~LVDS_ENABLE_DITHER
;
191 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
192 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
193 temp
|= LVDS_HSYNC_POLARITY
;
194 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
195 temp
|= LVDS_VSYNC_POLARITY
;
197 I915_WRITE(lvds_encoder
->reg
, temp
);
201 * Sets the power state for the panel.
203 static void intel_enable_lvds(struct intel_encoder
*encoder
)
205 struct drm_device
*dev
= encoder
->base
.dev
;
206 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
207 struct intel_connector
*intel_connector
=
208 &lvds_encoder
->attached_connector
->base
;
209 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
210 u32 ctl_reg
, stat_reg
;
212 if (HAS_PCH_SPLIT(dev
)) {
213 ctl_reg
= PCH_PP_CONTROL
;
214 stat_reg
= PCH_PP_STATUS
;
216 ctl_reg
= PP_CONTROL
;
217 stat_reg
= PP_STATUS
;
220 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
222 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
223 POSTING_READ(lvds_encoder
->reg
);
224 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
225 DRM_ERROR("timed out waiting for panel to power on\n");
227 intel_panel_enable_backlight(intel_connector
);
230 static void intel_disable_lvds(struct intel_encoder
*encoder
)
232 struct drm_device
*dev
= encoder
->base
.dev
;
233 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
234 struct intel_connector
*intel_connector
=
235 &lvds_encoder
->attached_connector
->base
;
236 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
237 u32 ctl_reg
, stat_reg
;
239 if (HAS_PCH_SPLIT(dev
)) {
240 ctl_reg
= PCH_PP_CONTROL
;
241 stat_reg
= PCH_PP_STATUS
;
243 ctl_reg
= PP_CONTROL
;
244 stat_reg
= PP_STATUS
;
247 intel_panel_disable_backlight(intel_connector
);
249 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
250 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
251 DRM_ERROR("timed out waiting for panel to power off\n");
253 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
254 POSTING_READ(lvds_encoder
->reg
);
257 static enum drm_mode_status
258 intel_lvds_mode_valid(struct drm_connector
*connector
,
259 struct drm_display_mode
*mode
)
261 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
262 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
264 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
266 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
272 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
273 struct intel_crtc_config
*pipe_config
)
275 struct drm_device
*dev
= intel_encoder
->base
.dev
;
276 struct intel_lvds_encoder
*lvds_encoder
=
277 to_lvds_encoder(&intel_encoder
->base
);
278 struct intel_connector
*intel_connector
=
279 &lvds_encoder
->attached_connector
->base
;
280 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
281 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
282 unsigned int lvds_bpp
;
284 /* Should never happen!! */
285 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
286 DRM_ERROR("Can't support LVDS on pipe A\n");
290 if (lvds_encoder
->a3_power
== LVDS_A3_POWER_UP
)
295 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
296 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
297 pipe_config
->pipe_bpp
, lvds_bpp
);
298 pipe_config
->pipe_bpp
= lvds_bpp
;
302 * We have timings from the BIOS for the panel, put them in
303 * to the adjusted mode. The CRTC will be set up for this mode,
304 * with the panel scaling set up to source from the H/VDisplay
305 * of the original mode.
307 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
310 if (HAS_PCH_SPLIT(dev
)) {
311 pipe_config
->has_pch_encoder
= true;
313 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
314 intel_connector
->panel
.fitting_mode
);
316 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
317 intel_connector
->panel
.fitting_mode
);
322 * XXX: It would be nice to support lower refresh rates on the
323 * panels to reduce power consumption, and perhaps match the
324 * user's requested refresh rate.
331 * Detect the LVDS connection.
333 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
334 * connected and closed means disconnected. We also send hotplug events as
335 * needed, using lid status notification from the input layer.
337 static enum drm_connector_status
338 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
340 struct drm_device
*dev
= connector
->dev
;
341 enum drm_connector_status status
;
343 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
344 connector
->base
.id
, connector
->name
);
346 status
= intel_panel_detect(dev
);
347 if (status
!= connector_status_unknown
)
350 return connector_status_connected
;
354 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
356 static int intel_lvds_get_modes(struct drm_connector
*connector
)
358 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
359 struct drm_device
*dev
= connector
->dev
;
360 struct drm_display_mode
*mode
;
362 /* use cached edid if we have one */
363 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
364 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
366 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
370 drm_mode_probed_add(connector
, mode
);
374 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
376 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
380 /* The GPU hangs up on these systems if modeset is performed on LID open */
381 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
383 .callback
= intel_no_modeset_on_lid_dmi_callback
,
384 .ident
= "Toshiba Tecra A11",
386 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
387 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
391 { } /* terminating entry */
395 * Lid events. Note the use of 'modeset':
396 * - we set it to MODESET_ON_LID_OPEN on lid close,
397 * and set it to MODESET_DONE on open
398 * - we use it as a "only once" bit (ie we ignore
399 * duplicate events where it was already properly set)
400 * - the suspend/resume paths will set it to
401 * MODESET_SUSPENDED and ignore the lid open event,
402 * because they restore the mode ("lid open").
404 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
407 struct intel_lvds_connector
*lvds_connector
=
408 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
409 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
410 struct drm_device
*dev
= connector
->dev
;
411 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
413 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
416 mutex_lock(&dev_priv
->modeset_restore_lock
);
417 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
420 * check and update the status of LVDS connector after receiving
421 * the LID nofication event.
423 connector
->status
= connector
->funcs
->detect(connector
, false);
425 /* Don't force modeset on machines where it causes a GPU lockup */
426 if (dmi_check_system(intel_no_modeset_on_lid
))
428 if (!acpi_lid_open()) {
429 /* do modeset on next lid open event */
430 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
434 if (dev_priv
->modeset_restore
== MODESET_DONE
)
438 * Some old platform's BIOS love to wreak havoc while the lid is closed.
439 * We try to detect this here and undo any damage. The split for PCH
440 * platforms is rather conservative and a bit arbitrary expect that on
441 * those platforms VGA disabling requires actual legacy VGA I/O access,
442 * and as part of the cleanup in the hw state restore we also redisable
445 if (!HAS_PCH_SPLIT(dev
)) {
446 drm_modeset_lock_all(dev
);
447 intel_modeset_setup_hw_state(dev
, true);
448 drm_modeset_unlock_all(dev
);
451 dev_priv
->modeset_restore
= MODESET_DONE
;
454 mutex_unlock(&dev_priv
->modeset_restore_lock
);
459 * intel_lvds_destroy - unregister and free LVDS structures
460 * @connector: connector to free
462 * Unregister the DDC bus for this connector then free the driver private
465 static void intel_lvds_destroy(struct drm_connector
*connector
)
467 struct intel_lvds_connector
*lvds_connector
=
468 to_lvds_connector(connector
);
470 if (lvds_connector
->lid_notifier
.notifier_call
)
471 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
473 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
474 kfree(lvds_connector
->base
.edid
);
476 intel_panel_fini(&lvds_connector
->base
.panel
);
478 drm_connector_cleanup(connector
);
482 static int intel_lvds_set_property(struct drm_connector
*connector
,
483 struct drm_property
*property
,
486 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
487 struct drm_device
*dev
= connector
->dev
;
489 if (property
== dev
->mode_config
.scaling_mode_property
) {
490 struct drm_crtc
*crtc
;
492 if (value
== DRM_MODE_SCALE_NONE
) {
493 DRM_DEBUG_KMS("no scaling not supported\n");
497 if (intel_connector
->panel
.fitting_mode
== value
) {
498 /* the LVDS scaling property is not changed */
501 intel_connector
->panel
.fitting_mode
= value
;
503 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
504 if (crtc
&& crtc
->enabled
) {
506 * If the CRTC is enabled, the display will be changed
507 * according to the new panel fitting mode.
509 intel_crtc_restore_mode(crtc
);
516 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
517 .get_modes
= intel_lvds_get_modes
,
518 .mode_valid
= intel_lvds_mode_valid
,
519 .best_encoder
= intel_best_encoder
,
522 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
523 .dpms
= intel_connector_dpms
,
524 .detect
= intel_lvds_detect
,
525 .fill_modes
= drm_helper_probe_single_connector_modes
,
526 .set_property
= intel_lvds_set_property
,
527 .destroy
= intel_lvds_destroy
,
530 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
531 .destroy
= intel_encoder_destroy
,
534 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
536 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
540 /* These systems claim to have LVDS, but really don't */
541 static const struct dmi_system_id intel_no_lvds
[] = {
543 .callback
= intel_no_lvds_dmi_callback
,
544 .ident
= "Apple Mac Mini (Core series)",
546 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
547 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
551 .callback
= intel_no_lvds_dmi_callback
,
552 .ident
= "Apple Mac Mini (Core 2 series)",
554 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
555 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
559 .callback
= intel_no_lvds_dmi_callback
,
560 .ident
= "MSI IM-945GSE-A",
562 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
563 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
567 .callback
= intel_no_lvds_dmi_callback
,
568 .ident
= "Dell Studio Hybrid",
570 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
571 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
575 .callback
= intel_no_lvds_dmi_callback
,
576 .ident
= "Dell OptiPlex FX170",
578 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
579 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
583 .callback
= intel_no_lvds_dmi_callback
,
584 .ident
= "AOpen Mini PC",
586 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
587 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
591 .callback
= intel_no_lvds_dmi_callback
,
592 .ident
= "AOpen Mini PC MP915",
594 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
595 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
599 .callback
= intel_no_lvds_dmi_callback
,
600 .ident
= "AOpen i915GMm-HFS",
602 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
603 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
607 .callback
= intel_no_lvds_dmi_callback
,
608 .ident
= "AOpen i45GMx-I",
610 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
611 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
615 .callback
= intel_no_lvds_dmi_callback
,
616 .ident
= "Aopen i945GTt-VFA",
618 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
622 .callback
= intel_no_lvds_dmi_callback
,
623 .ident
= "Clientron U800",
625 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
626 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
630 .callback
= intel_no_lvds_dmi_callback
,
631 .ident
= "Clientron E830",
633 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
634 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
638 .callback
= intel_no_lvds_dmi_callback
,
639 .ident
= "Asus EeeBox PC EB1007",
641 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
642 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
646 .callback
= intel_no_lvds_dmi_callback
,
647 .ident
= "Asus AT5NM10T-I",
649 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
650 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
654 .callback
= intel_no_lvds_dmi_callback
,
655 .ident
= "Hewlett-Packard HP t5740",
657 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
658 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
662 .callback
= intel_no_lvds_dmi_callback
,
663 .ident
= "Hewlett-Packard t5745",
665 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
666 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
670 .callback
= intel_no_lvds_dmi_callback
,
671 .ident
= "Hewlett-Packard st5747",
673 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
674 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
678 .callback
= intel_no_lvds_dmi_callback
,
679 .ident
= "MSI Wind Box DC500",
681 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
682 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
686 .callback
= intel_no_lvds_dmi_callback
,
687 .ident
= "Gigabyte GA-D525TUD",
689 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
690 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
694 .callback
= intel_no_lvds_dmi_callback
,
695 .ident
= "Supermicro X7SPA-H",
697 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
698 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
702 .callback
= intel_no_lvds_dmi_callback
,
703 .ident
= "Fujitsu Esprimo Q900",
705 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
706 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
710 .callback
= intel_no_lvds_dmi_callback
,
711 .ident
= "Intel D410PT",
713 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
714 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
718 .callback
= intel_no_lvds_dmi_callback
,
719 .ident
= "Intel D425KT",
721 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
722 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
726 .callback
= intel_no_lvds_dmi_callback
,
727 .ident
= "Intel D510MO",
729 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
730 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
734 .callback
= intel_no_lvds_dmi_callback
,
735 .ident
= "Intel D525MW",
737 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
738 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
742 { } /* terminating entry */
746 * Enumerate the child dev array parsed from VBT to check whether
747 * the LVDS is present.
748 * If it is present, return 1.
749 * If it is not present, return false.
750 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
752 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
755 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
758 if (!dev_priv
->vbt
.child_dev_num
)
761 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
762 union child_device_config
*uchild
= dev_priv
->vbt
.child_dev
+ i
;
763 struct old_child_dev_config
*child
= &uchild
->old
;
765 /* If the device type is not LFP, continue.
766 * We have to check both the new identifiers as well as the
767 * old for compatibility with some BIOSes.
769 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
770 child
->device_type
!= DEVICE_TYPE_LFP
)
773 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
774 *i2c_pin
= child
->i2c_pin
;
776 /* However, we cannot trust the BIOS writers to populate
777 * the VBT correctly. Since LVDS requires additional
778 * information from AIM blocks, a non-zero addin offset is
779 * a good indicator that the LVDS is actually present.
781 if (child
->addin_offset
)
784 /* But even then some BIOS writers perform some black magic
785 * and instantiate the device without reference to any
786 * additional data. Trust that if the VBT was written into
787 * the OpRegion then they have validated the LVDS's existence.
789 if (dev_priv
->opregion
.vbt
)
796 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
798 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
802 static const struct dmi_system_id intel_dual_link_lvds
[] = {
804 .callback
= intel_dual_link_lvds_callback
,
805 .ident
= "Apple MacBook Pro (Core i5/i7 Series)",
807 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
808 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
811 { } /* terminating entry */
814 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
816 struct intel_encoder
*encoder
;
817 struct intel_lvds_encoder
*lvds_encoder
;
819 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
,
821 if (encoder
->type
== INTEL_OUTPUT_LVDS
) {
822 lvds_encoder
= to_lvds_encoder(&encoder
->base
);
824 return lvds_encoder
->is_dual_link
;
831 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
833 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
835 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
837 /* use the module option value if specified */
838 if (i915
.lvds_channel_mode
> 0)
839 return i915
.lvds_channel_mode
== 2;
841 if (dmi_check_system(intel_dual_link_lvds
))
844 /* BIOS should set the proper LVDS register value at boot, but
845 * in reality, it doesn't set the value when the lid is closed;
846 * we need to check "the value to be set" in VBT when LVDS
847 * register is uninitialized.
849 val
= I915_READ(lvds_encoder
->reg
);
850 if (!(val
& ~(LVDS_PIPE_MASK
| LVDS_DETECTED
)))
851 val
= dev_priv
->vbt
.bios_lvds_val
;
853 return (val
& LVDS_CLKB_POWER_MASK
) == LVDS_CLKB_POWER_UP
;
856 static bool intel_lvds_supported(struct drm_device
*dev
)
858 /* With the introduction of the PCH we gained a dedicated
859 * LVDS presence pin, use it. */
860 if (HAS_PCH_IBX(dev
) || HAS_PCH_CPT(dev
))
863 /* Otherwise LVDS was only attached to mobile products,
864 * except for the inglorious 830gm */
865 if (INTEL_INFO(dev
)->gen
<= 4 && IS_MOBILE(dev
) && !IS_I830(dev
))
872 * intel_lvds_init - setup LVDS connectors on this device
875 * Create the connector, register the LVDS DDC bus, and try to figure out what
876 * modes we can display on the LVDS panel (if present).
878 void intel_lvds_init(struct drm_device
*dev
)
880 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
881 struct intel_lvds_encoder
*lvds_encoder
;
882 struct intel_encoder
*intel_encoder
;
883 struct intel_lvds_connector
*lvds_connector
;
884 struct intel_connector
*intel_connector
;
885 struct drm_connector
*connector
;
886 struct drm_encoder
*encoder
;
887 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
888 struct drm_display_mode
*fixed_mode
= NULL
;
889 struct drm_display_mode
*downclock_mode
= NULL
;
891 struct drm_crtc
*crtc
;
896 if (!intel_lvds_supported(dev
))
899 /* Skip init on machines we know falsely report LVDS */
900 if (dmi_check_system(intel_no_lvds
))
903 pin
= GMBUS_PORT_PANEL
;
904 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
905 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
909 if (HAS_PCH_SPLIT(dev
)) {
910 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
912 if (dev_priv
->vbt
.edp_support
) {
913 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
918 lvds_encoder
= kzalloc(sizeof(*lvds_encoder
), GFP_KERNEL
);
922 lvds_connector
= kzalloc(sizeof(*lvds_connector
), GFP_KERNEL
);
923 if (!lvds_connector
) {
928 lvds_encoder
->attached_connector
= lvds_connector
;
930 intel_encoder
= &lvds_encoder
->base
;
931 encoder
= &intel_encoder
->base
;
932 intel_connector
= &lvds_connector
->base
;
933 connector
= &intel_connector
->base
;
934 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
935 DRM_MODE_CONNECTOR_LVDS
);
937 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
938 DRM_MODE_ENCODER_LVDS
);
940 intel_encoder
->enable
= intel_enable_lvds
;
941 intel_encoder
->pre_enable
= intel_pre_enable_lvds
;
942 intel_encoder
->compute_config
= intel_lvds_compute_config
;
943 intel_encoder
->disable
= intel_disable_lvds
;
944 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
945 intel_encoder
->get_config
= intel_lvds_get_config
;
946 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
947 intel_connector
->unregister
= intel_connector_unregister
;
949 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
950 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
952 intel_encoder
->cloneable
= 0;
953 if (HAS_PCH_SPLIT(dev
))
954 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
955 else if (IS_GEN4(dev
))
956 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
958 intel_encoder
->crtc_mask
= (1 << 1);
960 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
961 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
962 connector
->interlace_allowed
= false;
963 connector
->doublescan_allowed
= false;
965 if (HAS_PCH_SPLIT(dev
)) {
966 lvds_encoder
->reg
= PCH_LVDS
;
968 lvds_encoder
->reg
= LVDS
;
971 /* create the scaling mode property */
972 drm_mode_create_scaling_mode_property(dev
);
973 drm_object_attach_property(&connector
->base
,
974 dev
->mode_config
.scaling_mode_property
,
975 DRM_MODE_SCALE_ASPECT
);
976 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
979 * 1) check for EDID on DDC
980 * 2) check for VBT data
981 * 3) check to see if LVDS is already on
982 * if none of the above, no panel
983 * 4) make sure lid is open
984 * if closed, act like it's not there for now
988 * Attempt to get the fixed panel mode from DDC. Assume that the
989 * preferred mode is the right one.
991 mutex_lock(&dev
->mode_config
.mutex
);
992 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
994 if (drm_add_edid_modes(connector
, edid
)) {
995 drm_mode_connector_update_edid_property(connector
,
999 edid
= ERR_PTR(-EINVAL
);
1002 edid
= ERR_PTR(-ENOENT
);
1004 lvds_connector
->base
.edid
= edid
;
1006 if (IS_ERR_OR_NULL(edid
)) {
1007 /* Didn't get an EDID, so
1008 * Set wide sync ranges so we get all modes
1009 * handed to valid_mode for checking
1011 connector
->display_info
.min_vfreq
= 0;
1012 connector
->display_info
.max_vfreq
= 200;
1013 connector
->display_info
.min_hfreq
= 0;
1014 connector
->display_info
.max_hfreq
= 200;
1017 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1018 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1019 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1020 drm_mode_debug_printmodeline(scan
);
1022 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1025 intel_find_panel_downclock(dev
,
1026 fixed_mode
, connector
);
1027 if (downclock_mode
!= NULL
&&
1028 i915
.lvds_downclock
) {
1029 /* We found the downclock for LVDS. */
1030 dev_priv
->lvds_downclock_avail
= true;
1031 dev_priv
->lvds_downclock
=
1032 downclock_mode
->clock
;
1033 DRM_DEBUG_KMS("LVDS downclock is found"
1034 " in EDID. Normal clock %dKhz, "
1035 "downclock %dKhz\n",
1037 dev_priv
->lvds_downclock
);
1044 /* Failed to get EDID, what about VBT? */
1045 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1046 DRM_DEBUG_KMS("using mode from VBT: ");
1047 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1049 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1051 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1057 * If we didn't get EDID, try checking if the panel is already turned
1058 * on. If so, assume that whatever is currently programmed is the
1062 /* Ironlake: FIXME if still fail, not try pipe mode now */
1063 if (HAS_PCH_SPLIT(dev
))
1066 lvds
= I915_READ(LVDS
);
1067 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1068 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1070 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1071 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1073 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1074 drm_mode_debug_printmodeline(fixed_mode
);
1075 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1080 /* If we still don't have a mode after all that, give up. */
1085 mutex_unlock(&dev
->mode_config
.mutex
);
1087 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1088 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1089 lvds_encoder
->is_dual_link
? "dual" : "single");
1091 lvds_encoder
->a3_power
= I915_READ(lvds_encoder
->reg
) &
1095 * Unlock registers and just
1096 * leave them unlocked
1098 if (HAS_PCH_SPLIT(dev
)) {
1099 I915_WRITE(PCH_PP_CONTROL
,
1100 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1102 I915_WRITE(PP_CONTROL
,
1103 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1105 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1106 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1107 DRM_DEBUG_KMS("lid notifier registration failed\n");
1108 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1110 drm_sysfs_connector_add(connector
);
1112 intel_panel_init(&intel_connector
->panel
, fixed_mode
, downclock_mode
);
1113 intel_panel_setup_backlight(connector
);
1118 mutex_unlock(&dev
->mode_config
.mutex
);
1120 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1121 drm_connector_cleanup(connector
);
1122 drm_encoder_cleanup(encoder
);
1123 kfree(lvds_encoder
);
1124 kfree(lvds_connector
);