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_atomic_helper.h>
36 #include <drm/drm_crtc.h>
37 #include <drm/drm_edid.h>
38 #include "intel_drv.h"
39 #include <drm/i915_drm.h>
41 #include <linux/acpi.h>
43 /* Private structure for the integrated LVDS support */
44 struct intel_lvds_connector
{
45 struct intel_connector base
;
47 struct notifier_block lid_notifier
;
50 struct intel_lvds_encoder
{
51 struct intel_encoder base
;
57 struct intel_lvds_connector
*attached_connector
;
60 static struct intel_lvds_encoder
*to_lvds_encoder(struct drm_encoder
*encoder
)
62 return container_of(encoder
, struct intel_lvds_encoder
, base
.base
);
65 static struct intel_lvds_connector
*to_lvds_connector(struct drm_connector
*connector
)
67 return container_of(connector
, struct intel_lvds_connector
, base
.base
);
70 static bool intel_lvds_get_hw_state(struct intel_encoder
*encoder
,
73 struct drm_device
*dev
= encoder
->base
.dev
;
74 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
75 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
76 enum intel_display_power_domain power_domain
;
79 power_domain
= intel_display_port_power_domain(encoder
);
80 if (!intel_display_power_is_enabled(dev_priv
, power_domain
))
83 tmp
= I915_READ(lvds_encoder
->reg
);
85 if (!(tmp
& LVDS_PORT_EN
))
89 *pipe
= PORT_TO_PIPE_CPT(tmp
);
91 *pipe
= PORT_TO_PIPE(tmp
);
96 static void intel_lvds_get_config(struct intel_encoder
*encoder
,
97 struct intel_crtc_state
*pipe_config
)
99 struct drm_device
*dev
= encoder
->base
.dev
;
100 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
101 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
105 tmp
= I915_READ(lvds_encoder
->reg
);
106 if (tmp
& LVDS_HSYNC_POLARITY
)
107 flags
|= DRM_MODE_FLAG_NHSYNC
;
109 flags
|= DRM_MODE_FLAG_PHSYNC
;
110 if (tmp
& LVDS_VSYNC_POLARITY
)
111 flags
|= DRM_MODE_FLAG_NVSYNC
;
113 flags
|= DRM_MODE_FLAG_PVSYNC
;
115 pipe_config
->base
.adjusted_mode
.flags
|= flags
;
117 /* gen2/3 store dither state in pfit control, needs to match */
118 if (INTEL_INFO(dev
)->gen
< 4) {
119 tmp
= I915_READ(PFIT_CONTROL
);
121 pipe_config
->gmch_pfit
.control
|= tmp
& PANEL_8TO6_DITHER_ENABLE
;
124 dotclock
= pipe_config
->port_clock
;
126 if (HAS_PCH_SPLIT(dev_priv
->dev
))
127 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
129 pipe_config
->base
.adjusted_mode
.crtc_clock
= dotclock
;
132 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
134 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
135 struct drm_device
*dev
= encoder
->base
.dev
;
136 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
137 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
138 const struct drm_display_mode
*adjusted_mode
= &crtc
->config
->base
.adjusted_mode
;
139 int pipe
= crtc
->pipe
;
142 if (HAS_PCH_SPLIT(dev
)) {
143 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
144 assert_shared_dpll_disabled(dev_priv
,
145 intel_crtc_to_shared_dpll(crtc
));
147 assert_pll_disabled(dev_priv
, pipe
);
150 temp
= I915_READ(lvds_encoder
->reg
);
151 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
153 if (HAS_PCH_CPT(dev
)) {
154 temp
&= ~PORT_TRANS_SEL_MASK
;
155 temp
|= PORT_TRANS_SEL_CPT(pipe
);
158 temp
|= LVDS_PIPEB_SELECT
;
160 temp
&= ~LVDS_PIPEB_SELECT
;
164 /* set the corresponsding LVDS_BORDER bit */
165 temp
&= ~LVDS_BORDER_ENABLE
;
166 temp
|= crtc
->config
->gmch_pfit
.lvds_border_bits
;
167 /* Set the B0-B3 data pairs corresponding to whether we're going to
168 * set the DPLLs for dual-channel mode or not.
170 if (lvds_encoder
->is_dual_link
)
171 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
173 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
175 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
176 * appropriately here, but we need to look more thoroughly into how
177 * panels behave in the two modes. For now, let's just maintain the
178 * value we got from the BIOS.
180 temp
&= ~LVDS_A3_POWER_MASK
;
181 temp
|= lvds_encoder
->a3_power
;
183 /* Set the dithering flag on LVDS as needed, note that there is no
184 * special lvds dither control bit on pch-split platforms, dithering is
185 * only controlled through the PIPECONF reg. */
186 if (INTEL_INFO(dev
)->gen
== 4) {
187 /* Bspec wording suggests that LVDS port dithering only exists
188 * for 18bpp panels. */
189 if (crtc
->config
->dither
&& crtc
->config
->pipe_bpp
== 18)
190 temp
|= LVDS_ENABLE_DITHER
;
192 temp
&= ~LVDS_ENABLE_DITHER
;
194 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
195 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
196 temp
|= LVDS_HSYNC_POLARITY
;
197 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
198 temp
|= LVDS_VSYNC_POLARITY
;
200 I915_WRITE(lvds_encoder
->reg
, temp
);
204 * Sets the power state for the panel.
206 static void intel_enable_lvds(struct intel_encoder
*encoder
)
208 struct drm_device
*dev
= encoder
->base
.dev
;
209 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
210 struct intel_connector
*intel_connector
=
211 &lvds_encoder
->attached_connector
->base
;
212 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
213 u32 ctl_reg
, stat_reg
;
215 if (HAS_PCH_SPLIT(dev
)) {
216 ctl_reg
= PCH_PP_CONTROL
;
217 stat_reg
= PCH_PP_STATUS
;
219 ctl_reg
= PP_CONTROL
;
220 stat_reg
= PP_STATUS
;
223 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
225 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
226 POSTING_READ(lvds_encoder
->reg
);
227 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
228 DRM_ERROR("timed out waiting for panel to power on\n");
230 intel_panel_enable_backlight(intel_connector
);
233 static void intel_disable_lvds(struct intel_encoder
*encoder
)
235 struct drm_device
*dev
= encoder
->base
.dev
;
236 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
237 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
238 u32 ctl_reg
, stat_reg
;
240 if (HAS_PCH_SPLIT(dev
)) {
241 ctl_reg
= PCH_PP_CONTROL
;
242 stat_reg
= PCH_PP_STATUS
;
244 ctl_reg
= PP_CONTROL
;
245 stat_reg
= PP_STATUS
;
248 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
249 if (wait_for((I915_READ(stat_reg
) & PP_ON
) == 0, 1000))
250 DRM_ERROR("timed out waiting for panel to power off\n");
252 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
253 POSTING_READ(lvds_encoder
->reg
);
256 static void gmch_disable_lvds(struct intel_encoder
*encoder
)
258 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
259 struct intel_connector
*intel_connector
=
260 &lvds_encoder
->attached_connector
->base
;
262 intel_panel_disable_backlight(intel_connector
);
264 intel_disable_lvds(encoder
);
267 static void pch_disable_lvds(struct intel_encoder
*encoder
)
269 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
270 struct intel_connector
*intel_connector
=
271 &lvds_encoder
->attached_connector
->base
;
273 intel_panel_disable_backlight(intel_connector
);
276 static void pch_post_disable_lvds(struct intel_encoder
*encoder
)
278 intel_disable_lvds(encoder
);
281 static enum drm_mode_status
282 intel_lvds_mode_valid(struct drm_connector
*connector
,
283 struct drm_display_mode
*mode
)
285 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
286 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
287 int max_pixclk
= to_i915(connector
->dev
)->max_dotclk_freq
;
289 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
291 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
293 if (fixed_mode
->clock
> max_pixclk
)
294 return MODE_CLOCK_HIGH
;
299 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
300 struct intel_crtc_state
*pipe_config
)
302 struct drm_device
*dev
= intel_encoder
->base
.dev
;
303 struct intel_lvds_encoder
*lvds_encoder
=
304 to_lvds_encoder(&intel_encoder
->base
);
305 struct intel_connector
*intel_connector
=
306 &lvds_encoder
->attached_connector
->base
;
307 struct drm_display_mode
*adjusted_mode
= &pipe_config
->base
.adjusted_mode
;
308 struct intel_crtc
*intel_crtc
= to_intel_crtc(pipe_config
->base
.crtc
);
309 unsigned int lvds_bpp
;
311 /* Should never happen!! */
312 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
313 DRM_ERROR("Can't support LVDS on pipe A\n");
317 if (lvds_encoder
->a3_power
== LVDS_A3_POWER_UP
)
322 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
323 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
324 pipe_config
->pipe_bpp
, lvds_bpp
);
325 pipe_config
->pipe_bpp
= lvds_bpp
;
329 * We have timings from the BIOS for the panel, put them in
330 * to the adjusted mode. The CRTC will be set up for this mode,
331 * with the panel scaling set up to source from the H/VDisplay
332 * of the original mode.
334 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
337 if (HAS_PCH_SPLIT(dev
)) {
338 pipe_config
->has_pch_encoder
= true;
340 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
341 intel_connector
->panel
.fitting_mode
);
343 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
344 intel_connector
->panel
.fitting_mode
);
349 * XXX: It would be nice to support lower refresh rates on the
350 * panels to reduce power consumption, and perhaps match the
351 * user's requested refresh rate.
358 * Detect the LVDS connection.
360 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
361 * connected and closed means disconnected. We also send hotplug events as
362 * needed, using lid status notification from the input layer.
364 static enum drm_connector_status
365 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
367 struct drm_device
*dev
= connector
->dev
;
368 enum drm_connector_status status
;
370 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
371 connector
->base
.id
, connector
->name
);
373 status
= intel_panel_detect(dev
);
374 if (status
!= connector_status_unknown
)
377 return connector_status_connected
;
381 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
383 static int intel_lvds_get_modes(struct drm_connector
*connector
)
385 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
386 struct drm_device
*dev
= connector
->dev
;
387 struct drm_display_mode
*mode
;
389 /* use cached edid if we have one */
390 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
391 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
393 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
397 drm_mode_probed_add(connector
, mode
);
401 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
403 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
407 /* The GPU hangs up on these systems if modeset is performed on LID open */
408 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
410 .callback
= intel_no_modeset_on_lid_dmi_callback
,
411 .ident
= "Toshiba Tecra A11",
413 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
414 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
418 { } /* terminating entry */
422 * Lid events. Note the use of 'modeset':
423 * - we set it to MODESET_ON_LID_OPEN on lid close,
424 * and set it to MODESET_DONE on open
425 * - we use it as a "only once" bit (ie we ignore
426 * duplicate events where it was already properly set)
427 * - the suspend/resume paths will set it to
428 * MODESET_SUSPENDED and ignore the lid open event,
429 * because they restore the mode ("lid open").
431 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
434 struct intel_lvds_connector
*lvds_connector
=
435 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
436 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
437 struct drm_device
*dev
= connector
->dev
;
438 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
440 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
443 mutex_lock(&dev_priv
->modeset_restore_lock
);
444 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
447 * check and update the status of LVDS connector after receiving
448 * the LID nofication event.
450 connector
->status
= connector
->funcs
->detect(connector
, false);
452 /* Don't force modeset on machines where it causes a GPU lockup */
453 if (dmi_check_system(intel_no_modeset_on_lid
))
455 if (!acpi_lid_open()) {
456 /* do modeset on next lid open event */
457 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
461 if (dev_priv
->modeset_restore
== MODESET_DONE
)
465 * Some old platform's BIOS love to wreak havoc while the lid is closed.
466 * We try to detect this here and undo any damage. The split for PCH
467 * platforms is rather conservative and a bit arbitrary expect that on
468 * those platforms VGA disabling requires actual legacy VGA I/O access,
469 * and as part of the cleanup in the hw state restore we also redisable
472 if (!HAS_PCH_SPLIT(dev
)) {
473 drm_modeset_lock_all(dev
);
474 intel_display_resume(dev
);
475 drm_modeset_unlock_all(dev
);
478 dev_priv
->modeset_restore
= MODESET_DONE
;
481 mutex_unlock(&dev_priv
->modeset_restore_lock
);
486 * intel_lvds_destroy - unregister and free LVDS structures
487 * @connector: connector to free
489 * Unregister the DDC bus for this connector then free the driver private
492 static void intel_lvds_destroy(struct drm_connector
*connector
)
494 struct intel_lvds_connector
*lvds_connector
=
495 to_lvds_connector(connector
);
497 if (lvds_connector
->lid_notifier
.notifier_call
)
498 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
500 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
501 kfree(lvds_connector
->base
.edid
);
503 intel_panel_fini(&lvds_connector
->base
.panel
);
505 drm_connector_cleanup(connector
);
509 static int intel_lvds_set_property(struct drm_connector
*connector
,
510 struct drm_property
*property
,
513 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
514 struct drm_device
*dev
= connector
->dev
;
516 if (property
== dev
->mode_config
.scaling_mode_property
) {
517 struct drm_crtc
*crtc
;
519 if (value
== DRM_MODE_SCALE_NONE
) {
520 DRM_DEBUG_KMS("no scaling not supported\n");
524 if (intel_connector
->panel
.fitting_mode
== value
) {
525 /* the LVDS scaling property is not changed */
528 intel_connector
->panel
.fitting_mode
= value
;
530 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
531 if (crtc
&& crtc
->state
->enable
) {
533 * If the CRTC is enabled, the display will be changed
534 * according to the new panel fitting mode.
536 intel_crtc_restore_mode(crtc
);
543 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
544 .get_modes
= intel_lvds_get_modes
,
545 .mode_valid
= intel_lvds_mode_valid
,
546 .best_encoder
= intel_best_encoder
,
549 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
550 .dpms
= drm_atomic_helper_connector_dpms
,
551 .detect
= intel_lvds_detect
,
552 .fill_modes
= drm_helper_probe_single_connector_modes
,
553 .set_property
= intel_lvds_set_property
,
554 .atomic_get_property
= intel_connector_atomic_get_property
,
555 .destroy
= intel_lvds_destroy
,
556 .atomic_destroy_state
= drm_atomic_helper_connector_destroy_state
,
557 .atomic_duplicate_state
= drm_atomic_helper_connector_duplicate_state
,
560 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
561 .destroy
= intel_encoder_destroy
,
564 static int intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
566 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
570 /* These systems claim to have LVDS, but really don't */
571 static const struct dmi_system_id intel_no_lvds
[] = {
573 .callback
= intel_no_lvds_dmi_callback
,
574 .ident
= "Apple Mac Mini (Core series)",
576 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
577 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
581 .callback
= intel_no_lvds_dmi_callback
,
582 .ident
= "Apple Mac Mini (Core 2 series)",
584 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
585 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
589 .callback
= intel_no_lvds_dmi_callback
,
590 .ident
= "MSI IM-945GSE-A",
592 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
593 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
597 .callback
= intel_no_lvds_dmi_callback
,
598 .ident
= "Dell Studio Hybrid",
600 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
601 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
605 .callback
= intel_no_lvds_dmi_callback
,
606 .ident
= "Dell OptiPlex FX170",
608 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
609 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
613 .callback
= intel_no_lvds_dmi_callback
,
614 .ident
= "AOpen Mini PC",
616 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
617 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
621 .callback
= intel_no_lvds_dmi_callback
,
622 .ident
= "AOpen Mini PC MP915",
624 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
625 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
629 .callback
= intel_no_lvds_dmi_callback
,
630 .ident
= "AOpen i915GMm-HFS",
632 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
633 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
637 .callback
= intel_no_lvds_dmi_callback
,
638 .ident
= "AOpen i45GMx-I",
640 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
641 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
645 .callback
= intel_no_lvds_dmi_callback
,
646 .ident
= "Aopen i945GTt-VFA",
648 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
652 .callback
= intel_no_lvds_dmi_callback
,
653 .ident
= "Clientron U800",
655 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
656 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
660 .callback
= intel_no_lvds_dmi_callback
,
661 .ident
= "Clientron E830",
663 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
664 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
668 .callback
= intel_no_lvds_dmi_callback
,
669 .ident
= "Asus EeeBox PC EB1007",
671 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
672 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
676 .callback
= intel_no_lvds_dmi_callback
,
677 .ident
= "Asus AT5NM10T-I",
679 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
680 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
684 .callback
= intel_no_lvds_dmi_callback
,
685 .ident
= "Hewlett-Packard HP t5740",
687 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
688 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
692 .callback
= intel_no_lvds_dmi_callback
,
693 .ident
= "Hewlett-Packard t5745",
695 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
696 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
700 .callback
= intel_no_lvds_dmi_callback
,
701 .ident
= "Hewlett-Packard st5747",
703 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
704 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
708 .callback
= intel_no_lvds_dmi_callback
,
709 .ident
= "MSI Wind Box DC500",
711 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
712 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
716 .callback
= intel_no_lvds_dmi_callback
,
717 .ident
= "Gigabyte GA-D525TUD",
719 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
720 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
724 .callback
= intel_no_lvds_dmi_callback
,
725 .ident
= "Supermicro X7SPA-H",
727 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
728 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
732 .callback
= intel_no_lvds_dmi_callback
,
733 .ident
= "Fujitsu Esprimo Q900",
735 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
736 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
740 .callback
= intel_no_lvds_dmi_callback
,
741 .ident
= "Intel D410PT",
743 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
744 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
748 .callback
= intel_no_lvds_dmi_callback
,
749 .ident
= "Intel D425KT",
751 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
752 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
756 .callback
= intel_no_lvds_dmi_callback
,
757 .ident
= "Intel D510MO",
759 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
760 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
764 .callback
= intel_no_lvds_dmi_callback
,
765 .ident
= "Intel D525MW",
767 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
768 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
772 { } /* terminating entry */
776 * Enumerate the child dev array parsed from VBT to check whether
777 * the LVDS is present.
778 * If it is present, return 1.
779 * If it is not present, return false.
780 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
782 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
785 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
788 if (!dev_priv
->vbt
.child_dev_num
)
791 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
792 union child_device_config
*uchild
= dev_priv
->vbt
.child_dev
+ i
;
793 struct old_child_dev_config
*child
= &uchild
->old
;
795 /* If the device type is not LFP, continue.
796 * We have to check both the new identifiers as well as the
797 * old for compatibility with some BIOSes.
799 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
800 child
->device_type
!= DEVICE_TYPE_LFP
)
803 if (intel_gmbus_is_valid_pin(dev_priv
, child
->i2c_pin
))
804 *i2c_pin
= child
->i2c_pin
;
806 /* However, we cannot trust the BIOS writers to populate
807 * the VBT correctly. Since LVDS requires additional
808 * information from AIM blocks, a non-zero addin offset is
809 * a good indicator that the LVDS is actually present.
811 if (child
->addin_offset
)
814 /* But even then some BIOS writers perform some black magic
815 * and instantiate the device without reference to any
816 * additional data. Trust that if the VBT was written into
817 * the OpRegion then they have validated the LVDS's existence.
819 if (dev_priv
->opregion
.vbt
)
826 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
828 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
832 static const struct dmi_system_id intel_dual_link_lvds
[] = {
834 .callback
= intel_dual_link_lvds_callback
,
835 .ident
= "Apple MacBook Pro 15\" (2010)",
837 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
838 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro6,2"),
842 .callback
= intel_dual_link_lvds_callback
,
843 .ident
= "Apple MacBook Pro 15\" (2011)",
845 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
846 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
850 .callback
= intel_dual_link_lvds_callback
,
851 .ident
= "Apple MacBook Pro 15\" (2012)",
853 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
854 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro9,1"),
857 { } /* terminating entry */
860 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
862 struct intel_encoder
*encoder
;
863 struct intel_lvds_encoder
*lvds_encoder
;
865 for_each_intel_encoder(dev
, encoder
) {
866 if (encoder
->type
== INTEL_OUTPUT_LVDS
) {
867 lvds_encoder
= to_lvds_encoder(&encoder
->base
);
869 return lvds_encoder
->is_dual_link
;
876 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
878 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
880 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
882 /* use the module option value if specified */
883 if (i915
.lvds_channel_mode
> 0)
884 return i915
.lvds_channel_mode
== 2;
886 /* single channel LVDS is limited to 112 MHz */
887 if (lvds_encoder
->attached_connector
->base
.panel
.fixed_mode
->clock
891 if (dmi_check_system(intel_dual_link_lvds
))
894 /* BIOS should set the proper LVDS register value at boot, but
895 * in reality, it doesn't set the value when the lid is closed;
896 * we need to check "the value to be set" in VBT when LVDS
897 * register is uninitialized.
899 val
= I915_READ(lvds_encoder
->reg
);
900 if (!(val
& ~(LVDS_PIPE_MASK
| LVDS_DETECTED
)))
901 val
= dev_priv
->vbt
.bios_lvds_val
;
903 return (val
& LVDS_CLKB_POWER_MASK
) == LVDS_CLKB_POWER_UP
;
906 static bool intel_lvds_supported(struct drm_device
*dev
)
908 /* With the introduction of the PCH we gained a dedicated
909 * LVDS presence pin, use it. */
910 if (HAS_PCH_IBX(dev
) || HAS_PCH_CPT(dev
))
913 /* Otherwise LVDS was only attached to mobile products,
914 * except for the inglorious 830gm */
915 if (INTEL_INFO(dev
)->gen
<= 4 && IS_MOBILE(dev
) && !IS_I830(dev
))
922 * intel_lvds_init - setup LVDS connectors on this device
925 * Create the connector, register the LVDS DDC bus, and try to figure out what
926 * modes we can display on the LVDS panel (if present).
928 void intel_lvds_init(struct drm_device
*dev
)
930 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
931 struct intel_lvds_encoder
*lvds_encoder
;
932 struct intel_encoder
*intel_encoder
;
933 struct intel_lvds_connector
*lvds_connector
;
934 struct intel_connector
*intel_connector
;
935 struct drm_connector
*connector
;
936 struct drm_encoder
*encoder
;
937 struct drm_display_mode
*scan
; /* *modes, *bios_mode; */
938 struct drm_display_mode
*fixed_mode
= NULL
;
939 struct drm_display_mode
*downclock_mode
= NULL
;
941 struct drm_crtc
*crtc
;
948 * Unlock registers and just leave them unlocked. Do this before
949 * checking quirk lists to avoid bogus WARNINGs.
951 if (HAS_PCH_SPLIT(dev
)) {
952 I915_WRITE(PCH_PP_CONTROL
,
953 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
954 } else if (INTEL_INFO(dev_priv
)->gen
< 5) {
955 I915_WRITE(PP_CONTROL
,
956 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
958 if (!intel_lvds_supported(dev
))
961 /* Skip init on machines we know falsely report LVDS */
962 if (dmi_check_system(intel_no_lvds
))
965 if (HAS_PCH_SPLIT(dev
))
970 lvds
= I915_READ(lvds_reg
);
972 if (HAS_PCH_SPLIT(dev
)) {
973 if ((lvds
& LVDS_DETECTED
) == 0)
975 if (dev_priv
->vbt
.edp_support
) {
976 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
981 pin
= GMBUS_PIN_PANEL
;
982 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
983 if ((lvds
& LVDS_PORT_EN
) == 0) {
984 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
987 DRM_DEBUG_KMS("LVDS is not present in VBT, but enabled anyway\n");
990 /* Set the Panel Power On/Off timings if uninitialized. */
991 if (INTEL_INFO(dev_priv
)->gen
< 5 &&
992 I915_READ(PP_ON_DELAYS
) == 0 && I915_READ(PP_OFF_DELAYS
) == 0) {
993 /* Set T2 to 40ms and T5 to 200ms */
994 I915_WRITE(PP_ON_DELAYS
, 0x019007d0);
996 /* Set T3 to 35ms and Tx to 200ms */
997 I915_WRITE(PP_OFF_DELAYS
, 0x015e07d0);
999 DRM_DEBUG_KMS("Panel power timings uninitialized, setting defaults\n");
1002 lvds_encoder
= kzalloc(sizeof(*lvds_encoder
), GFP_KERNEL
);
1006 lvds_connector
= kzalloc(sizeof(*lvds_connector
), GFP_KERNEL
);
1007 if (!lvds_connector
) {
1008 kfree(lvds_encoder
);
1012 if (intel_connector_init(&lvds_connector
->base
) < 0) {
1013 kfree(lvds_connector
);
1014 kfree(lvds_encoder
);
1018 lvds_encoder
->attached_connector
= lvds_connector
;
1020 intel_encoder
= &lvds_encoder
->base
;
1021 encoder
= &intel_encoder
->base
;
1022 intel_connector
= &lvds_connector
->base
;
1023 connector
= &intel_connector
->base
;
1024 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
1025 DRM_MODE_CONNECTOR_LVDS
);
1027 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
1028 DRM_MODE_ENCODER_LVDS
);
1030 intel_encoder
->enable
= intel_enable_lvds
;
1031 intel_encoder
->pre_enable
= intel_pre_enable_lvds
;
1032 intel_encoder
->compute_config
= intel_lvds_compute_config
;
1033 if (HAS_PCH_SPLIT(dev_priv
)) {
1034 intel_encoder
->disable
= pch_disable_lvds
;
1035 intel_encoder
->post_disable
= pch_post_disable_lvds
;
1037 intel_encoder
->disable
= gmch_disable_lvds
;
1039 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
1040 intel_encoder
->get_config
= intel_lvds_get_config
;
1041 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
1042 intel_connector
->unregister
= intel_connector_unregister
;
1044 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
1045 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
1047 intel_encoder
->cloneable
= 0;
1048 if (HAS_PCH_SPLIT(dev
))
1049 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
1050 else if (IS_GEN4(dev
))
1051 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
1053 intel_encoder
->crtc_mask
= (1 << 1);
1055 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
1056 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
1057 connector
->interlace_allowed
= false;
1058 connector
->doublescan_allowed
= false;
1060 lvds_encoder
->reg
= lvds_reg
;
1062 /* create the scaling mode property */
1063 drm_mode_create_scaling_mode_property(dev
);
1064 drm_object_attach_property(&connector
->base
,
1065 dev
->mode_config
.scaling_mode_property
,
1066 DRM_MODE_SCALE_ASPECT
);
1067 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
1070 * 1) check for EDID on DDC
1071 * 2) check for VBT data
1072 * 3) check to see if LVDS is already on
1073 * if none of the above, no panel
1074 * 4) make sure lid is open
1075 * if closed, act like it's not there for now
1079 * Attempt to get the fixed panel mode from DDC. Assume that the
1080 * preferred mode is the right one.
1082 mutex_lock(&dev
->mode_config
.mutex
);
1083 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1085 if (drm_add_edid_modes(connector
, edid
)) {
1086 drm_mode_connector_update_edid_property(connector
,
1090 edid
= ERR_PTR(-EINVAL
);
1093 edid
= ERR_PTR(-ENOENT
);
1095 lvds_connector
->base
.edid
= edid
;
1097 if (IS_ERR_OR_NULL(edid
)) {
1098 /* Didn't get an EDID, so
1099 * Set wide sync ranges so we get all modes
1100 * handed to valid_mode for checking
1102 connector
->display_info
.min_vfreq
= 0;
1103 connector
->display_info
.max_vfreq
= 200;
1104 connector
->display_info
.min_hfreq
= 0;
1105 connector
->display_info
.max_hfreq
= 200;
1108 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1109 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1110 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1111 drm_mode_debug_printmodeline(scan
);
1113 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1119 /* Failed to get EDID, what about VBT? */
1120 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1121 DRM_DEBUG_KMS("using mode from VBT: ");
1122 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1124 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1126 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1132 * If we didn't get EDID, try checking if the panel is already turned
1133 * on. If so, assume that whatever is currently programmed is the
1137 /* Ironlake: FIXME if still fail, not try pipe mode now */
1138 if (HAS_PCH_SPLIT(dev
))
1141 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1142 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1144 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1145 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1147 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1148 drm_mode_debug_printmodeline(fixed_mode
);
1149 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1154 /* If we still don't have a mode after all that, give up. */
1159 mutex_unlock(&dev
->mode_config
.mutex
);
1161 intel_panel_init(&intel_connector
->panel
, fixed_mode
, downclock_mode
);
1163 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1164 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1165 lvds_encoder
->is_dual_link
? "dual" : "single");
1167 lvds_encoder
->a3_power
= I915_READ(lvds_encoder
->reg
) &
1170 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1171 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1172 DRM_DEBUG_KMS("lid notifier registration failed\n");
1173 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1175 drm_connector_register(connector
);
1177 intel_panel_setup_backlight(connector
, INVALID_PIPE
);
1182 mutex_unlock(&dev
->mode_config
.mutex
);
1184 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1185 drm_connector_cleanup(connector
);
1186 drm_encoder_cleanup(encoder
);
1187 kfree(lvds_encoder
);
1188 kfree(lvds_connector
);