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;
97 if (HAS_PCH_SPLIT(dev
))
102 tmp
= I915_READ(lvds_reg
);
103 if (tmp
& LVDS_HSYNC_POLARITY
)
104 flags
|= DRM_MODE_FLAG_NHSYNC
;
106 flags
|= DRM_MODE_FLAG_PHSYNC
;
107 if (tmp
& LVDS_VSYNC_POLARITY
)
108 flags
|= DRM_MODE_FLAG_NVSYNC
;
110 flags
|= DRM_MODE_FLAG_PVSYNC
;
112 pipe_config
->adjusted_mode
.flags
|= flags
;
114 dotclock
= pipe_config
->port_clock
;
116 if (HAS_PCH_SPLIT(dev_priv
->dev
))
117 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
119 pipe_config
->adjusted_mode
.crtc_clock
= dotclock
;
122 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
123 * This is an exception to the general rule that mode_set doesn't turn
126 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
128 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
129 struct drm_device
*dev
= encoder
->base
.dev
;
130 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
131 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
132 const struct drm_display_mode
*adjusted_mode
=
133 &crtc
->config
.adjusted_mode
;
134 int pipe
= crtc
->pipe
;
137 if (HAS_PCH_SPLIT(dev
)) {
138 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
139 assert_shared_dpll_disabled(dev_priv
,
140 intel_crtc_to_shared_dpll(crtc
));
142 assert_pll_disabled(dev_priv
, pipe
);
145 temp
= I915_READ(lvds_encoder
->reg
);
146 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
148 if (HAS_PCH_CPT(dev
)) {
149 temp
&= ~PORT_TRANS_SEL_MASK
;
150 temp
|= PORT_TRANS_SEL_CPT(pipe
);
153 temp
|= LVDS_PIPEB_SELECT
;
155 temp
&= ~LVDS_PIPEB_SELECT
;
159 /* set the corresponsding LVDS_BORDER bit */
160 temp
&= ~LVDS_BORDER_ENABLE
;
161 temp
|= crtc
->config
.gmch_pfit
.lvds_border_bits
;
162 /* Set the B0-B3 data pairs corresponding to whether we're going to
163 * set the DPLLs for dual-channel mode or not.
165 if (lvds_encoder
->is_dual_link
)
166 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
168 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
170 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
171 * appropriately here, but we need to look more thoroughly into how
172 * panels behave in the two modes.
175 /* Set the dithering flag on LVDS as needed, note that there is no
176 * special lvds dither control bit on pch-split platforms, dithering is
177 * only controlled through the PIPECONF reg. */
178 if (INTEL_INFO(dev
)->gen
== 4) {
179 /* Bspec wording suggests that LVDS port dithering only exists
180 * for 18bpp panels. */
181 if (crtc
->config
.dither
&& crtc
->config
.pipe_bpp
== 18)
182 temp
|= LVDS_ENABLE_DITHER
;
184 temp
&= ~LVDS_ENABLE_DITHER
;
186 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
187 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
188 temp
|= LVDS_HSYNC_POLARITY
;
189 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
190 temp
|= LVDS_VSYNC_POLARITY
;
192 I915_WRITE(lvds_encoder
->reg
, temp
);
196 * Sets the power state for the panel.
198 static void intel_enable_lvds(struct intel_encoder
*encoder
)
200 struct drm_device
*dev
= encoder
->base
.dev
;
201 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
202 struct intel_connector
*intel_connector
=
203 &lvds_encoder
->attached_connector
->base
;
204 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
205 u32 ctl_reg
, stat_reg
;
207 if (HAS_PCH_SPLIT(dev
)) {
208 ctl_reg
= PCH_PP_CONTROL
;
209 stat_reg
= PCH_PP_STATUS
;
211 ctl_reg
= PP_CONTROL
;
212 stat_reg
= PP_STATUS
;
215 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
217 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
218 POSTING_READ(lvds_encoder
->reg
);
219 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
220 DRM_ERROR("timed out waiting for panel to power on\n");
222 intel_panel_enable_backlight(intel_connector
);
225 static void intel_disable_lvds(struct intel_encoder
*encoder
)
227 struct drm_device
*dev
= encoder
->base
.dev
;
228 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
229 struct intel_connector
*intel_connector
=
230 &lvds_encoder
->attached_connector
->base
;
231 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
232 u32 ctl_reg
, stat_reg
;
234 if (HAS_PCH_SPLIT(dev
)) {
235 ctl_reg
= PCH_PP_CONTROL
;
236 stat_reg
= PCH_PP_STATUS
;
238 ctl_reg
= PP_CONTROL
;
239 stat_reg
= PP_STATUS
;
242 intel_panel_disable_backlight(intel_connector
);
244 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
245 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
246 DRM_ERROR("timed out waiting for panel to power off\n");
248 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
249 POSTING_READ(lvds_encoder
->reg
);
252 static enum drm_mode_status
253 intel_lvds_mode_valid(struct drm_connector
*connector
,
254 struct drm_display_mode
*mode
)
256 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
257 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
259 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
261 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
267 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
268 struct intel_crtc_config
*pipe_config
)
270 struct drm_device
*dev
= intel_encoder
->base
.dev
;
271 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
272 struct intel_lvds_encoder
*lvds_encoder
=
273 to_lvds_encoder(&intel_encoder
->base
);
274 struct intel_connector
*intel_connector
=
275 &lvds_encoder
->attached_connector
->base
;
276 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
277 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
278 unsigned int lvds_bpp
;
280 /* Should never happen!! */
281 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
282 DRM_ERROR("Can't support LVDS on pipe A\n");
286 if ((I915_READ(lvds_encoder
->reg
) & LVDS_A3_POWER_MASK
) ==
292 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
293 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
294 pipe_config
->pipe_bpp
, lvds_bpp
);
295 pipe_config
->pipe_bpp
= lvds_bpp
;
299 * We have timings from the BIOS for the panel, put them in
300 * to the adjusted mode. The CRTC will be set up for this mode,
301 * with the panel scaling set up to source from the H/VDisplay
302 * of the original mode.
304 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
307 if (HAS_PCH_SPLIT(dev
)) {
308 pipe_config
->has_pch_encoder
= true;
310 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
311 intel_connector
->panel
.fitting_mode
);
313 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
314 intel_connector
->panel
.fitting_mode
);
319 * XXX: It would be nice to support lower refresh rates on the
320 * panels to reduce power consumption, and perhaps match the
321 * user's requested refresh rate.
327 static void intel_lvds_mode_set(struct intel_encoder
*encoder
)
330 * We don't do anything here, the LVDS port is fully set up in the pre
331 * enable hook - the ordering constraints for enabling the lvds port vs.
332 * enabling the display pll are too strict.
337 * Detect the LVDS connection.
339 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
340 * connected and closed means disconnected. We also send hotplug events as
341 * needed, using lid status notification from the input layer.
343 static enum drm_connector_status
344 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
346 struct drm_device
*dev
= connector
->dev
;
347 enum drm_connector_status status
;
349 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
350 connector
->base
.id
, drm_get_connector_name(connector
));
352 status
= intel_panel_detect(dev
);
353 if (status
!= connector_status_unknown
)
356 return connector_status_connected
;
360 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
362 static int intel_lvds_get_modes(struct drm_connector
*connector
)
364 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
365 struct drm_device
*dev
= connector
->dev
;
366 struct drm_display_mode
*mode
;
368 /* use cached edid if we have one */
369 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
370 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
372 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
376 drm_mode_probed_add(connector
, mode
);
380 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
382 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
386 /* The GPU hangs up on these systems if modeset is performed on LID open */
387 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
389 .callback
= intel_no_modeset_on_lid_dmi_callback
,
390 .ident
= "Toshiba Tecra A11",
392 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
393 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
397 { } /* terminating entry */
401 * Lid events. Note the use of 'modeset':
402 * - we set it to MODESET_ON_LID_OPEN on lid close,
403 * and set it to MODESET_DONE on open
404 * - we use it as a "only once" bit (ie we ignore
405 * duplicate events where it was already properly set)
406 * - the suspend/resume paths will set it to
407 * MODESET_SUSPENDED and ignore the lid open event,
408 * because they restore the mode ("lid open").
410 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
413 struct intel_lvds_connector
*lvds_connector
=
414 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
415 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
416 struct drm_device
*dev
= connector
->dev
;
417 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
419 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
422 mutex_lock(&dev_priv
->modeset_restore_lock
);
423 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
426 * check and update the status of LVDS connector after receiving
427 * the LID nofication event.
429 connector
->status
= connector
->funcs
->detect(connector
, false);
431 /* Don't force modeset on machines where it causes a GPU lockup */
432 if (dmi_check_system(intel_no_modeset_on_lid
))
434 if (!acpi_lid_open()) {
435 /* do modeset on next lid open event */
436 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
440 if (dev_priv
->modeset_restore
== MODESET_DONE
)
444 * Some old platform's BIOS love to wreak havoc while the lid is closed.
445 * We try to detect this here and undo any damage. The split for PCH
446 * platforms is rather conservative and a bit arbitrary expect that on
447 * those platforms VGA disabling requires actual legacy VGA I/O access,
448 * and as part of the cleanup in the hw state restore we also redisable
451 if (!HAS_PCH_SPLIT(dev
)) {
452 drm_modeset_lock_all(dev
);
453 intel_modeset_setup_hw_state(dev
, true);
454 drm_modeset_unlock_all(dev
);
457 dev_priv
->modeset_restore
= MODESET_DONE
;
460 mutex_unlock(&dev_priv
->modeset_restore_lock
);
465 * intel_lvds_destroy - unregister and free LVDS structures
466 * @connector: connector to free
468 * Unregister the DDC bus for this connector then free the driver private
471 static void intel_lvds_destroy(struct drm_connector
*connector
)
473 struct intel_lvds_connector
*lvds_connector
=
474 to_lvds_connector(connector
);
476 if (lvds_connector
->lid_notifier
.notifier_call
)
477 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
479 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
480 kfree(lvds_connector
->base
.edid
);
482 intel_panel_fini(&lvds_connector
->base
.panel
);
484 drm_connector_cleanup(connector
);
488 static int intel_lvds_set_property(struct drm_connector
*connector
,
489 struct drm_property
*property
,
492 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
493 struct drm_device
*dev
= connector
->dev
;
495 if (property
== dev
->mode_config
.scaling_mode_property
) {
496 struct drm_crtc
*crtc
;
498 if (value
== DRM_MODE_SCALE_NONE
) {
499 DRM_DEBUG_KMS("no scaling not supported\n");
503 if (intel_connector
->panel
.fitting_mode
== value
) {
504 /* the LVDS scaling property is not changed */
507 intel_connector
->panel
.fitting_mode
= value
;
509 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
510 if (crtc
&& crtc
->enabled
) {
512 * If the CRTC is enabled, the display will be changed
513 * according to the new panel fitting mode.
515 intel_crtc_restore_mode(crtc
);
522 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
523 .get_modes
= intel_lvds_get_modes
,
524 .mode_valid
= intel_lvds_mode_valid
,
525 .best_encoder
= intel_best_encoder
,
528 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
529 .dpms
= intel_connector_dpms
,
530 .detect
= intel_lvds_detect
,
531 .fill_modes
= drm_helper_probe_single_connector_modes
,
532 .set_property
= intel_lvds_set_property
,
533 .destroy
= intel_lvds_destroy
,
536 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
537 .destroy
= intel_encoder_destroy
,
540 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
542 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
546 /* These systems claim to have LVDS, but really don't */
547 static const struct dmi_system_id intel_no_lvds
[] = {
549 .callback
= intel_no_lvds_dmi_callback
,
550 .ident
= "Apple Mac Mini (Core series)",
552 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
553 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
557 .callback
= intel_no_lvds_dmi_callback
,
558 .ident
= "Apple Mac Mini (Core 2 series)",
560 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
561 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
565 .callback
= intel_no_lvds_dmi_callback
,
566 .ident
= "MSI IM-945GSE-A",
568 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
569 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
573 .callback
= intel_no_lvds_dmi_callback
,
574 .ident
= "Dell Studio Hybrid",
576 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
577 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
581 .callback
= intel_no_lvds_dmi_callback
,
582 .ident
= "Dell OptiPlex FX170",
584 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
585 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
589 .callback
= intel_no_lvds_dmi_callback
,
590 .ident
= "AOpen Mini PC",
592 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
593 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
597 .callback
= intel_no_lvds_dmi_callback
,
598 .ident
= "AOpen Mini PC MP915",
600 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
601 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
605 .callback
= intel_no_lvds_dmi_callback
,
606 .ident
= "AOpen i915GMm-HFS",
608 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
609 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
613 .callback
= intel_no_lvds_dmi_callback
,
614 .ident
= "AOpen i45GMx-I",
616 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
617 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
621 .callback
= intel_no_lvds_dmi_callback
,
622 .ident
= "Aopen i945GTt-VFA",
624 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
628 .callback
= intel_no_lvds_dmi_callback
,
629 .ident
= "Clientron U800",
631 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
632 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
636 .callback
= intel_no_lvds_dmi_callback
,
637 .ident
= "Clientron E830",
639 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
640 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
644 .callback
= intel_no_lvds_dmi_callback
,
645 .ident
= "Asus EeeBox PC EB1007",
647 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
648 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
652 .callback
= intel_no_lvds_dmi_callback
,
653 .ident
= "Asus AT5NM10T-I",
655 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
656 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
660 .callback
= intel_no_lvds_dmi_callback
,
661 .ident
= "Hewlett-Packard HP t5740",
663 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
664 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
668 .callback
= intel_no_lvds_dmi_callback
,
669 .ident
= "Hewlett-Packard t5745",
671 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
672 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
676 .callback
= intel_no_lvds_dmi_callback
,
677 .ident
= "Hewlett-Packard st5747",
679 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
680 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
684 .callback
= intel_no_lvds_dmi_callback
,
685 .ident
= "MSI Wind Box DC500",
687 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
688 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
692 .callback
= intel_no_lvds_dmi_callback
,
693 .ident
= "Gigabyte GA-D525TUD",
695 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
696 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
700 .callback
= intel_no_lvds_dmi_callback
,
701 .ident
= "Supermicro X7SPA-H",
703 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
704 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
708 .callback
= intel_no_lvds_dmi_callback
,
709 .ident
= "Fujitsu Esprimo Q900",
711 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
712 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
716 .callback
= intel_no_lvds_dmi_callback
,
717 .ident
= "Intel D410PT",
719 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
720 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
724 .callback
= intel_no_lvds_dmi_callback
,
725 .ident
= "Intel D425KT",
727 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
728 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
732 .callback
= intel_no_lvds_dmi_callback
,
733 .ident
= "Intel D510MO",
735 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
736 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
740 .callback
= intel_no_lvds_dmi_callback
,
741 .ident
= "Intel D525MW",
743 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
744 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
748 { } /* terminating entry */
752 * Enumerate the child dev array parsed from VBT to check whether
753 * the LVDS is present.
754 * If it is present, return 1.
755 * If it is not present, return false.
756 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
758 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
761 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
764 if (!dev_priv
->vbt
.child_dev_num
)
767 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
768 union child_device_config
*uchild
= dev_priv
->vbt
.child_dev
+ i
;
769 struct old_child_dev_config
*child
= &uchild
->old
;
771 /* If the device type is not LFP, continue.
772 * We have to check both the new identifiers as well as the
773 * old for compatibility with some BIOSes.
775 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
776 child
->device_type
!= DEVICE_TYPE_LFP
)
779 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
780 *i2c_pin
= child
->i2c_pin
;
782 /* However, we cannot trust the BIOS writers to populate
783 * the VBT correctly. Since LVDS requires additional
784 * information from AIM blocks, a non-zero addin offset is
785 * a good indicator that the LVDS is actually present.
787 if (child
->addin_offset
)
790 /* But even then some BIOS writers perform some black magic
791 * and instantiate the device without reference to any
792 * additional data. Trust that if the VBT was written into
793 * the OpRegion then they have validated the LVDS's existence.
795 if (dev_priv
->opregion
.vbt
)
802 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
804 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
808 static const struct dmi_system_id intel_dual_link_lvds
[] = {
810 .callback
= intel_dual_link_lvds_callback
,
811 .ident
= "Apple MacBook Pro (Core i5/i7 Series)",
813 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
814 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
817 { } /* terminating entry */
820 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
822 struct intel_encoder
*encoder
;
823 struct intel_lvds_encoder
*lvds_encoder
;
825 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
,
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
;
902 if (!intel_lvds_supported(dev
))
905 /* Skip init on machines we know falsely report LVDS */
906 if (dmi_check_system(intel_no_lvds
))
909 pin
= GMBUS_PORT_PANEL
;
910 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
911 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
915 if (HAS_PCH_SPLIT(dev
)) {
916 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
918 if (dev_priv
->vbt
.edp_support
) {
919 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
924 lvds_encoder
= kzalloc(sizeof(*lvds_encoder
), GFP_KERNEL
);
928 lvds_connector
= kzalloc(sizeof(*lvds_connector
), GFP_KERNEL
);
929 if (!lvds_connector
) {
934 lvds_encoder
->attached_connector
= lvds_connector
;
936 intel_encoder
= &lvds_encoder
->base
;
937 encoder
= &intel_encoder
->base
;
938 intel_connector
= &lvds_connector
->base
;
939 connector
= &intel_connector
->base
;
940 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
941 DRM_MODE_CONNECTOR_LVDS
);
943 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
944 DRM_MODE_ENCODER_LVDS
);
946 intel_encoder
->enable
= intel_enable_lvds
;
947 intel_encoder
->pre_enable
= intel_pre_enable_lvds
;
948 intel_encoder
->compute_config
= intel_lvds_compute_config
;
949 intel_encoder
->mode_set
= intel_lvds_mode_set
;
950 intel_encoder
->disable
= intel_disable_lvds
;
951 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
952 intel_encoder
->get_config
= intel_lvds_get_config
;
953 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
954 intel_connector
->unregister
= intel_connector_unregister
;
956 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
957 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
959 intel_encoder
->cloneable
= 0;
960 if (HAS_PCH_SPLIT(dev
))
961 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
962 else if (IS_GEN4(dev
))
963 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
965 intel_encoder
->crtc_mask
= (1 << 1);
967 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
968 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
969 connector
->interlace_allowed
= false;
970 connector
->doublescan_allowed
= false;
972 if (HAS_PCH_SPLIT(dev
)) {
973 lvds_encoder
->reg
= PCH_LVDS
;
975 lvds_encoder
->reg
= LVDS
;
978 /* create the scaling mode property */
979 drm_mode_create_scaling_mode_property(dev
);
980 drm_object_attach_property(&connector
->base
,
981 dev
->mode_config
.scaling_mode_property
,
982 DRM_MODE_SCALE_ASPECT
);
983 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
986 * 1) check for EDID on DDC
987 * 2) check for VBT data
988 * 3) check to see if LVDS is already on
989 * if none of the above, no panel
990 * 4) make sure lid is open
991 * if closed, act like it's not there for now
995 * Attempt to get the fixed panel mode from DDC. Assume that the
996 * preferred mode is the right one.
998 mutex_lock(&dev
->mode_config
.mutex
);
999 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1001 if (drm_add_edid_modes(connector
, edid
)) {
1002 drm_mode_connector_update_edid_property(connector
,
1006 edid
= ERR_PTR(-EINVAL
);
1009 edid
= ERR_PTR(-ENOENT
);
1011 lvds_connector
->base
.edid
= edid
;
1013 if (IS_ERR_OR_NULL(edid
)) {
1014 /* Didn't get an EDID, so
1015 * Set wide sync ranges so we get all modes
1016 * handed to valid_mode for checking
1018 connector
->display_info
.min_vfreq
= 0;
1019 connector
->display_info
.max_vfreq
= 200;
1020 connector
->display_info
.min_hfreq
= 0;
1021 connector
->display_info
.max_hfreq
= 200;
1024 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1025 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1026 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1027 drm_mode_debug_printmodeline(scan
);
1029 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1032 intel_find_panel_downclock(dev
,
1033 fixed_mode
, connector
);
1034 if (downclock_mode
!= NULL
&&
1035 i915
.lvds_downclock
) {
1036 /* We found the downclock for LVDS. */
1037 dev_priv
->lvds_downclock_avail
= true;
1038 dev_priv
->lvds_downclock
=
1039 downclock_mode
->clock
;
1040 DRM_DEBUG_KMS("LVDS downclock is found"
1041 " in EDID. Normal clock %dKhz, "
1042 "downclock %dKhz\n",
1044 dev_priv
->lvds_downclock
);
1051 /* Failed to get EDID, what about VBT? */
1052 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1053 DRM_DEBUG_KMS("using mode from VBT: ");
1054 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1056 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1058 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1064 * If we didn't get EDID, try checking if the panel is already turned
1065 * on. If so, assume that whatever is currently programmed is the
1069 /* Ironlake: FIXME if still fail, not try pipe mode now */
1070 if (HAS_PCH_SPLIT(dev
))
1073 lvds
= I915_READ(LVDS
);
1074 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1075 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1077 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1078 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1080 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1081 drm_mode_debug_printmodeline(fixed_mode
);
1082 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1087 /* If we still don't have a mode after all that, give up. */
1092 mutex_unlock(&dev
->mode_config
.mutex
);
1094 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1095 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1096 lvds_encoder
->is_dual_link
? "dual" : "single");
1099 * Unlock registers and just
1100 * leave them unlocked
1102 if (HAS_PCH_SPLIT(dev
)) {
1103 I915_WRITE(PCH_PP_CONTROL
,
1104 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1106 I915_WRITE(PP_CONTROL
,
1107 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1109 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1110 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1111 DRM_DEBUG_KMS("lid notifier registration failed\n");
1112 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1114 drm_sysfs_connector_add(connector
);
1116 intel_panel_init(&intel_connector
->panel
, fixed_mode
, downclock_mode
);
1117 intel_panel_setup_backlight(connector
);
1122 mutex_unlock(&dev
->mode_config
.mutex
);
1124 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1125 drm_connector_cleanup(connector
);
1126 drm_encoder_cleanup(encoder
);
1127 kfree(lvds_encoder
);
1128 kfree(lvds_connector
);