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_is_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 /* gen2/3 store dither state in pfit control, needs to match */
121 if (INTEL_INFO(dev
)->gen
< 4) {
122 tmp
= I915_READ(PFIT_CONTROL
);
124 pipe_config
->gmch_pfit
.control
|= tmp
& PANEL_8TO6_DITHER_ENABLE
;
127 dotclock
= pipe_config
->port_clock
;
129 if (HAS_PCH_SPLIT(dev_priv
->dev
))
130 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
132 pipe_config
->adjusted_mode
.crtc_clock
= dotclock
;
135 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
137 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
138 struct drm_device
*dev
= encoder
->base
.dev
;
139 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
140 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
141 const struct drm_display_mode
*adjusted_mode
=
142 &crtc
->config
.adjusted_mode
;
143 int pipe
= crtc
->pipe
;
146 if (HAS_PCH_SPLIT(dev
)) {
147 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
148 assert_shared_dpll_disabled(dev_priv
,
149 intel_crtc_to_shared_dpll(crtc
));
151 assert_pll_disabled(dev_priv
, pipe
);
154 temp
= I915_READ(lvds_encoder
->reg
);
155 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
157 if (HAS_PCH_CPT(dev
)) {
158 temp
&= ~PORT_TRANS_SEL_MASK
;
159 temp
|= PORT_TRANS_SEL_CPT(pipe
);
162 temp
|= LVDS_PIPEB_SELECT
;
164 temp
&= ~LVDS_PIPEB_SELECT
;
168 /* set the corresponsding LVDS_BORDER bit */
169 temp
&= ~LVDS_BORDER_ENABLE
;
170 temp
|= crtc
->config
.gmch_pfit
.lvds_border_bits
;
171 /* Set the B0-B3 data pairs corresponding to whether we're going to
172 * set the DPLLs for dual-channel mode or not.
174 if (lvds_encoder
->is_dual_link
)
175 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
177 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
179 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
180 * appropriately here, but we need to look more thoroughly into how
181 * panels behave in the two modes. For now, let's just maintain the
182 * value we got from the BIOS.
184 temp
&= ~LVDS_A3_POWER_MASK
;
185 temp
|= lvds_encoder
->a3_power
;
187 /* Set the dithering flag on LVDS as needed, note that there is no
188 * special lvds dither control bit on pch-split platforms, dithering is
189 * only controlled through the PIPECONF reg. */
190 if (INTEL_INFO(dev
)->gen
== 4) {
191 /* Bspec wording suggests that LVDS port dithering only exists
192 * for 18bpp panels. */
193 if (crtc
->config
.dither
&& crtc
->config
.pipe_bpp
== 18)
194 temp
|= LVDS_ENABLE_DITHER
;
196 temp
&= ~LVDS_ENABLE_DITHER
;
198 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
199 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
200 temp
|= LVDS_HSYNC_POLARITY
;
201 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
202 temp
|= LVDS_VSYNC_POLARITY
;
204 I915_WRITE(lvds_encoder
->reg
, temp
);
208 * Sets the power state for the panel.
210 static void intel_enable_lvds(struct intel_encoder
*encoder
)
212 struct drm_device
*dev
= encoder
->base
.dev
;
213 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
214 struct intel_connector
*intel_connector
=
215 &lvds_encoder
->attached_connector
->base
;
216 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
217 u32 ctl_reg
, stat_reg
;
219 if (HAS_PCH_SPLIT(dev
)) {
220 ctl_reg
= PCH_PP_CONTROL
;
221 stat_reg
= PCH_PP_STATUS
;
223 ctl_reg
= PP_CONTROL
;
224 stat_reg
= PP_STATUS
;
227 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
229 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
230 POSTING_READ(lvds_encoder
->reg
);
231 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
232 DRM_ERROR("timed out waiting for panel to power on\n");
234 intel_panel_enable_backlight(intel_connector
);
237 static void intel_disable_lvds(struct intel_encoder
*encoder
)
239 struct drm_device
*dev
= encoder
->base
.dev
;
240 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
241 struct intel_connector
*intel_connector
=
242 &lvds_encoder
->attached_connector
->base
;
243 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
244 u32 ctl_reg
, stat_reg
;
246 if (HAS_PCH_SPLIT(dev
)) {
247 ctl_reg
= PCH_PP_CONTROL
;
248 stat_reg
= PCH_PP_STATUS
;
250 ctl_reg
= PP_CONTROL
;
251 stat_reg
= PP_STATUS
;
254 intel_panel_disable_backlight(intel_connector
);
256 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
257 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
258 DRM_ERROR("timed out waiting for panel to power off\n");
260 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
261 POSTING_READ(lvds_encoder
->reg
);
264 static enum drm_mode_status
265 intel_lvds_mode_valid(struct drm_connector
*connector
,
266 struct drm_display_mode
*mode
)
268 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
269 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
271 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
273 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
279 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
280 struct intel_crtc_config
*pipe_config
)
282 struct drm_device
*dev
= intel_encoder
->base
.dev
;
283 struct intel_lvds_encoder
*lvds_encoder
=
284 to_lvds_encoder(&intel_encoder
->base
);
285 struct intel_connector
*intel_connector
=
286 &lvds_encoder
->attached_connector
->base
;
287 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
288 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
289 unsigned int lvds_bpp
;
291 /* Should never happen!! */
292 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
293 DRM_ERROR("Can't support LVDS on pipe A\n");
297 if (lvds_encoder
->a3_power
== LVDS_A3_POWER_UP
)
302 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
303 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
304 pipe_config
->pipe_bpp
, lvds_bpp
);
305 pipe_config
->pipe_bpp
= lvds_bpp
;
309 * We have timings from the BIOS for the panel, put them in
310 * to the adjusted mode. The CRTC will be set up for this mode,
311 * with the panel scaling set up to source from the H/VDisplay
312 * of the original mode.
314 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
317 if (HAS_PCH_SPLIT(dev
)) {
318 pipe_config
->has_pch_encoder
= true;
320 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
321 intel_connector
->panel
.fitting_mode
);
323 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
324 intel_connector
->panel
.fitting_mode
);
329 * XXX: It would be nice to support lower refresh rates on the
330 * panels to reduce power consumption, and perhaps match the
331 * user's requested refresh rate.
338 * Detect the LVDS connection.
340 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
341 * connected and closed means disconnected. We also send hotplug events as
342 * needed, using lid status notification from the input layer.
344 static enum drm_connector_status
345 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
347 struct drm_device
*dev
= connector
->dev
;
348 enum drm_connector_status status
;
350 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
351 connector
->base
.id
, connector
->name
);
353 status
= intel_panel_detect(dev
);
354 if (status
!= connector_status_unknown
)
357 return connector_status_connected
;
361 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
363 static int intel_lvds_get_modes(struct drm_connector
*connector
)
365 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
366 struct drm_device
*dev
= connector
->dev
;
367 struct drm_display_mode
*mode
;
369 /* use cached edid if we have one */
370 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
371 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
373 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
377 drm_mode_probed_add(connector
, mode
);
381 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
383 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
387 /* The GPU hangs up on these systems if modeset is performed on LID open */
388 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
390 .callback
= intel_no_modeset_on_lid_dmi_callback
,
391 .ident
= "Toshiba Tecra A11",
393 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
394 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
398 { } /* terminating entry */
402 * Lid events. Note the use of 'modeset':
403 * - we set it to MODESET_ON_LID_OPEN on lid close,
404 * and set it to MODESET_DONE on open
405 * - we use it as a "only once" bit (ie we ignore
406 * duplicate events where it was already properly set)
407 * - the suspend/resume paths will set it to
408 * MODESET_SUSPENDED and ignore the lid open event,
409 * because they restore the mode ("lid open").
411 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
414 struct intel_lvds_connector
*lvds_connector
=
415 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
416 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
417 struct drm_device
*dev
= connector
->dev
;
418 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
420 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
423 mutex_lock(&dev_priv
->modeset_restore_lock
);
424 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
427 * check and update the status of LVDS connector after receiving
428 * the LID nofication event.
430 connector
->status
= connector
->funcs
->detect(connector
, false);
432 /* Don't force modeset on machines where it causes a GPU lockup */
433 if (dmi_check_system(intel_no_modeset_on_lid
))
435 if (!acpi_lid_open()) {
436 /* do modeset on next lid open event */
437 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
441 if (dev_priv
->modeset_restore
== MODESET_DONE
)
445 * Some old platform's BIOS love to wreak havoc while the lid is closed.
446 * We try to detect this here and undo any damage. The split for PCH
447 * platforms is rather conservative and a bit arbitrary expect that on
448 * those platforms VGA disabling requires actual legacy VGA I/O access,
449 * and as part of the cleanup in the hw state restore we also redisable
452 if (!HAS_PCH_SPLIT(dev
)) {
453 drm_modeset_lock_all(dev
);
454 intel_modeset_setup_hw_state(dev
, true);
455 drm_modeset_unlock_all(dev
);
458 dev_priv
->modeset_restore
= MODESET_DONE
;
461 mutex_unlock(&dev_priv
->modeset_restore_lock
);
466 * intel_lvds_destroy - unregister and free LVDS structures
467 * @connector: connector to free
469 * Unregister the DDC bus for this connector then free the driver private
472 static void intel_lvds_destroy(struct drm_connector
*connector
)
474 struct intel_lvds_connector
*lvds_connector
=
475 to_lvds_connector(connector
);
477 if (lvds_connector
->lid_notifier
.notifier_call
)
478 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
480 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
481 kfree(lvds_connector
->base
.edid
);
483 intel_panel_fini(&lvds_connector
->base
.panel
);
485 drm_connector_cleanup(connector
);
489 static int intel_lvds_set_property(struct drm_connector
*connector
,
490 struct drm_property
*property
,
493 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
494 struct drm_device
*dev
= connector
->dev
;
496 if (property
== dev
->mode_config
.scaling_mode_property
) {
497 struct drm_crtc
*crtc
;
499 if (value
== DRM_MODE_SCALE_NONE
) {
500 DRM_DEBUG_KMS("no scaling not supported\n");
504 if (intel_connector
->panel
.fitting_mode
== value
) {
505 /* the LVDS scaling property is not changed */
508 intel_connector
->panel
.fitting_mode
= value
;
510 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
511 if (crtc
&& crtc
->enabled
) {
513 * If the CRTC is enabled, the display will be changed
514 * according to the new panel fitting mode.
516 intel_crtc_restore_mode(crtc
);
523 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
524 .get_modes
= intel_lvds_get_modes
,
525 .mode_valid
= intel_lvds_mode_valid
,
526 .best_encoder
= intel_best_encoder
,
529 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
530 .dpms
= intel_connector_dpms
,
531 .detect
= intel_lvds_detect
,
532 .fill_modes
= drm_helper_probe_single_connector_modes
,
533 .set_property
= intel_lvds_set_property
,
534 .destroy
= intel_lvds_destroy
,
537 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
538 .destroy
= intel_encoder_destroy
,
541 static int intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
543 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
547 /* These systems claim to have LVDS, but really don't */
548 static const struct dmi_system_id intel_no_lvds
[] = {
550 .callback
= intel_no_lvds_dmi_callback
,
551 .ident
= "Apple Mac Mini (Core series)",
553 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
554 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
558 .callback
= intel_no_lvds_dmi_callback
,
559 .ident
= "Apple Mac Mini (Core 2 series)",
561 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
562 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
566 .callback
= intel_no_lvds_dmi_callback
,
567 .ident
= "MSI IM-945GSE-A",
569 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
570 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
574 .callback
= intel_no_lvds_dmi_callback
,
575 .ident
= "Dell Studio Hybrid",
577 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
578 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
582 .callback
= intel_no_lvds_dmi_callback
,
583 .ident
= "Dell OptiPlex FX170",
585 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
586 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
590 .callback
= intel_no_lvds_dmi_callback
,
591 .ident
= "AOpen Mini PC",
593 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
594 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
598 .callback
= intel_no_lvds_dmi_callback
,
599 .ident
= "AOpen Mini PC MP915",
601 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
602 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
606 .callback
= intel_no_lvds_dmi_callback
,
607 .ident
= "AOpen i915GMm-HFS",
609 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
610 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
614 .callback
= intel_no_lvds_dmi_callback
,
615 .ident
= "AOpen i45GMx-I",
617 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
618 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
622 .callback
= intel_no_lvds_dmi_callback
,
623 .ident
= "Aopen i945GTt-VFA",
625 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
629 .callback
= intel_no_lvds_dmi_callback
,
630 .ident
= "Clientron U800",
632 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
633 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
637 .callback
= intel_no_lvds_dmi_callback
,
638 .ident
= "Clientron E830",
640 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
641 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
645 .callback
= intel_no_lvds_dmi_callback
,
646 .ident
= "Asus EeeBox PC EB1007",
648 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
649 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
653 .callback
= intel_no_lvds_dmi_callback
,
654 .ident
= "Asus AT5NM10T-I",
656 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
657 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
661 .callback
= intel_no_lvds_dmi_callback
,
662 .ident
= "Hewlett-Packard HP t5740",
664 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
665 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
669 .callback
= intel_no_lvds_dmi_callback
,
670 .ident
= "Hewlett-Packard t5745",
672 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
673 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
677 .callback
= intel_no_lvds_dmi_callback
,
678 .ident
= "Hewlett-Packard st5747",
680 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
681 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
685 .callback
= intel_no_lvds_dmi_callback
,
686 .ident
= "MSI Wind Box DC500",
688 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
689 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
693 .callback
= intel_no_lvds_dmi_callback
,
694 .ident
= "Gigabyte GA-D525TUD",
696 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
697 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
701 .callback
= intel_no_lvds_dmi_callback
,
702 .ident
= "Supermicro X7SPA-H",
704 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
705 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
709 .callback
= intel_no_lvds_dmi_callback
,
710 .ident
= "Fujitsu Esprimo Q900",
712 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
713 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
717 .callback
= intel_no_lvds_dmi_callback
,
718 .ident
= "Intel D410PT",
720 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
721 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
725 .callback
= intel_no_lvds_dmi_callback
,
726 .ident
= "Intel D425KT",
728 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
729 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
733 .callback
= intel_no_lvds_dmi_callback
,
734 .ident
= "Intel D510MO",
736 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
737 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
741 .callback
= intel_no_lvds_dmi_callback
,
742 .ident
= "Intel D525MW",
744 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
745 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
749 { } /* terminating entry */
753 * Enumerate the child dev array parsed from VBT to check whether
754 * the LVDS is present.
755 * If it is present, return 1.
756 * If it is not present, return false.
757 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
759 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
762 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
765 if (!dev_priv
->vbt
.child_dev_num
)
768 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
769 union child_device_config
*uchild
= dev_priv
->vbt
.child_dev
+ i
;
770 struct old_child_dev_config
*child
= &uchild
->old
;
772 /* If the device type is not LFP, continue.
773 * We have to check both the new identifiers as well as the
774 * old for compatibility with some BIOSes.
776 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
777 child
->device_type
!= DEVICE_TYPE_LFP
)
780 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
781 *i2c_pin
= child
->i2c_pin
;
783 /* However, we cannot trust the BIOS writers to populate
784 * the VBT correctly. Since LVDS requires additional
785 * information from AIM blocks, a non-zero addin offset is
786 * a good indicator that the LVDS is actually present.
788 if (child
->addin_offset
)
791 /* But even then some BIOS writers perform some black magic
792 * and instantiate the device without reference to any
793 * additional data. Trust that if the VBT was written into
794 * the OpRegion then they have validated the LVDS's existence.
796 if (dev_priv
->opregion
.vbt
)
803 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
805 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
809 static const struct dmi_system_id intel_dual_link_lvds
[] = {
811 .callback
= intel_dual_link_lvds_callback
,
812 .ident
= "Apple MacBook Pro (Core i5/i7 Series)",
814 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
815 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
818 { } /* terminating entry */
821 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
823 struct intel_encoder
*encoder
;
824 struct intel_lvds_encoder
*lvds_encoder
;
826 for_each_intel_encoder(dev
, encoder
) {
827 if (encoder
->type
== INTEL_OUTPUT_LVDS
) {
828 lvds_encoder
= to_lvds_encoder(&encoder
->base
);
830 return lvds_encoder
->is_dual_link
;
837 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
839 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
841 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
843 /* use the module option value if specified */
844 if (i915
.lvds_channel_mode
> 0)
845 return i915
.lvds_channel_mode
== 2;
847 if (dmi_check_system(intel_dual_link_lvds
))
850 /* BIOS should set the proper LVDS register value at boot, but
851 * in reality, it doesn't set the value when the lid is closed;
852 * we need to check "the value to be set" in VBT when LVDS
853 * register is uninitialized.
855 val
= I915_READ(lvds_encoder
->reg
);
856 if (!(val
& ~(LVDS_PIPE_MASK
| LVDS_DETECTED
)))
857 val
= dev_priv
->vbt
.bios_lvds_val
;
859 return (val
& LVDS_CLKB_POWER_MASK
) == LVDS_CLKB_POWER_UP
;
862 static bool intel_lvds_supported(struct drm_device
*dev
)
864 /* With the introduction of the PCH we gained a dedicated
865 * LVDS presence pin, use it. */
866 if (HAS_PCH_IBX(dev
) || HAS_PCH_CPT(dev
))
869 /* Otherwise LVDS was only attached to mobile products,
870 * except for the inglorious 830gm */
871 if (INTEL_INFO(dev
)->gen
<= 4 && IS_MOBILE(dev
) && !IS_I830(dev
))
878 * intel_lvds_init - setup LVDS connectors on this device
881 * Create the connector, register the LVDS DDC bus, and try to figure out what
882 * modes we can display on the LVDS panel (if present).
884 void intel_lvds_init(struct drm_device
*dev
)
886 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
887 struct intel_lvds_encoder
*lvds_encoder
;
888 struct intel_encoder
*intel_encoder
;
889 struct intel_lvds_connector
*lvds_connector
;
890 struct intel_connector
*intel_connector
;
891 struct drm_connector
*connector
;
892 struct drm_encoder
*encoder
;
893 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
894 struct drm_display_mode
*fixed_mode
= NULL
;
895 struct drm_display_mode
*downclock_mode
= NULL
;
897 struct drm_crtc
*crtc
;
903 * Unlock registers and just leave them unlocked. Do this before
904 * checking quirk lists to avoid bogus WARNINGs.
906 if (HAS_PCH_SPLIT(dev
)) {
907 I915_WRITE(PCH_PP_CONTROL
,
908 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
910 I915_WRITE(PP_CONTROL
,
911 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
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(*lvds_encoder
), GFP_KERNEL
);
939 lvds_connector
= kzalloc(sizeof(*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_enable
= intel_pre_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
;
964 intel_connector
->unregister
= intel_connector_unregister
;
966 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
967 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
969 intel_encoder
->cloneable
= 0;
970 if (HAS_PCH_SPLIT(dev
))
971 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
972 else if (IS_GEN4(dev
))
973 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
975 intel_encoder
->crtc_mask
= (1 << 1);
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 mutex_lock(&dev
->mode_config
.mutex
);
1009 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1011 if (drm_add_edid_modes(connector
, edid
)) {
1012 drm_mode_connector_update_edid_property(connector
,
1016 edid
= ERR_PTR(-EINVAL
);
1019 edid
= ERR_PTR(-ENOENT
);
1021 lvds_connector
->base
.edid
= edid
;
1023 if (IS_ERR_OR_NULL(edid
)) {
1024 /* Didn't get an EDID, so
1025 * Set wide sync ranges so we get all modes
1026 * handed to valid_mode for checking
1028 connector
->display_info
.min_vfreq
= 0;
1029 connector
->display_info
.max_vfreq
= 200;
1030 connector
->display_info
.min_hfreq
= 0;
1031 connector
->display_info
.max_hfreq
= 200;
1034 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1035 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1036 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1037 drm_mode_debug_printmodeline(scan
);
1039 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1042 intel_find_panel_downclock(dev
,
1043 fixed_mode
, connector
);
1044 if (downclock_mode
!= NULL
&&
1045 i915
.lvds_downclock
) {
1046 /* We found the downclock for LVDS. */
1047 dev_priv
->lvds_downclock_avail
= true;
1048 dev_priv
->lvds_downclock
=
1049 downclock_mode
->clock
;
1050 DRM_DEBUG_KMS("LVDS downclock is found"
1051 " in EDID. Normal clock %dKhz, "
1052 "downclock %dKhz\n",
1054 dev_priv
->lvds_downclock
);
1061 /* Failed to get EDID, what about VBT? */
1062 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1063 DRM_DEBUG_KMS("using mode from VBT: ");
1064 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1066 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1068 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1074 * If we didn't get EDID, try checking if the panel is already turned
1075 * on. If so, assume that whatever is currently programmed is the
1079 /* Ironlake: FIXME if still fail, not try pipe mode now */
1080 if (HAS_PCH_SPLIT(dev
))
1083 lvds
= I915_READ(LVDS
);
1084 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1085 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1087 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1088 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1090 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1091 drm_mode_debug_printmodeline(fixed_mode
);
1092 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1097 /* If we still don't have a mode after all that, give up. */
1102 mutex_unlock(&dev
->mode_config
.mutex
);
1104 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1105 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1106 lvds_encoder
->is_dual_link
? "dual" : "single");
1108 lvds_encoder
->a3_power
= I915_READ(lvds_encoder
->reg
) &
1111 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1112 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1113 DRM_DEBUG_KMS("lid notifier registration failed\n");
1114 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1116 drm_connector_register(connector
);
1118 intel_panel_init(&intel_connector
->panel
, fixed_mode
, downclock_mode
);
1119 intel_panel_setup_backlight(connector
, INVALID_PIPE
);
1124 mutex_unlock(&dev
->mode_config
.mutex
);
1126 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1127 drm_connector_cleanup(connector
);
1128 drm_encoder_cleanup(encoder
);
1129 kfree(lvds_encoder
);
1130 kfree(lvds_connector
);