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 /* gen2/3 store dither state in pfit control, needs to match */
115 if (INTEL_INFO(dev
)->gen
< 4) {
116 tmp
= I915_READ(PFIT_CONTROL
);
118 pipe_config
->gmch_pfit
.control
|= tmp
& PANEL_8TO6_DITHER_ENABLE
;
121 dotclock
= pipe_config
->port_clock
;
123 if (HAS_PCH_SPLIT(dev_priv
->dev
))
124 ironlake_check_encoder_dotclock(pipe_config
, dotclock
);
126 pipe_config
->adjusted_mode
.crtc_clock
= dotclock
;
129 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
130 * This is an exception to the general rule that mode_set doesn't turn
133 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
135 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
136 struct drm_device
*dev
= encoder
->base
.dev
;
137 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
138 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
139 const struct drm_display_mode
*adjusted_mode
=
140 &crtc
->config
.adjusted_mode
;
141 int pipe
= crtc
->pipe
;
144 if (HAS_PCH_SPLIT(dev
)) {
145 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
146 assert_shared_dpll_disabled(dev_priv
,
147 intel_crtc_to_shared_dpll(crtc
));
149 assert_pll_disabled(dev_priv
, pipe
);
152 temp
= I915_READ(lvds_encoder
->reg
);
153 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
155 if (HAS_PCH_CPT(dev
)) {
156 temp
&= ~PORT_TRANS_SEL_MASK
;
157 temp
|= PORT_TRANS_SEL_CPT(pipe
);
160 temp
|= LVDS_PIPEB_SELECT
;
162 temp
&= ~LVDS_PIPEB_SELECT
;
166 /* set the corresponsding LVDS_BORDER bit */
167 temp
&= ~LVDS_BORDER_ENABLE
;
168 temp
|= crtc
->config
.gmch_pfit
.lvds_border_bits
;
169 /* Set the B0-B3 data pairs corresponding to whether we're going to
170 * set the DPLLs for dual-channel mode or not.
172 if (lvds_encoder
->is_dual_link
)
173 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
175 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
177 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
178 * appropriately here, but we need to look more thoroughly into how
179 * panels behave in the two modes.
182 /* Set the dithering flag on LVDS as needed, note that there is no
183 * special lvds dither control bit on pch-split platforms, dithering is
184 * only controlled through the PIPECONF reg. */
185 if (INTEL_INFO(dev
)->gen
== 4) {
186 /* Bspec wording suggests that LVDS port dithering only exists
187 * for 18bpp panels. */
188 if (crtc
->config
.dither
&& crtc
->config
.pipe_bpp
== 18)
189 temp
|= LVDS_ENABLE_DITHER
;
191 temp
&= ~LVDS_ENABLE_DITHER
;
193 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
194 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
195 temp
|= LVDS_HSYNC_POLARITY
;
196 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
197 temp
|= LVDS_VSYNC_POLARITY
;
199 I915_WRITE(lvds_encoder
->reg
, temp
);
203 * Sets the power state for the panel.
205 static void intel_enable_lvds(struct intel_encoder
*encoder
)
207 struct drm_device
*dev
= encoder
->base
.dev
;
208 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
209 struct intel_crtc
*intel_crtc
= to_intel_crtc(encoder
->base
.crtc
);
210 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
211 u32 ctl_reg
, stat_reg
;
213 if (HAS_PCH_SPLIT(dev
)) {
214 ctl_reg
= PCH_PP_CONTROL
;
215 stat_reg
= PCH_PP_STATUS
;
217 ctl_reg
= PP_CONTROL
;
218 stat_reg
= PP_STATUS
;
221 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
223 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
224 POSTING_READ(lvds_encoder
->reg
);
225 if (wait_for((I915_READ(stat_reg
) & PP_ON
) != 0, 1000))
226 DRM_ERROR("timed out waiting for panel to power on\n");
228 intel_panel_enable_backlight(dev
, intel_crtc
->pipe
);
231 static void intel_disable_lvds(struct intel_encoder
*encoder
)
233 struct drm_device
*dev
= encoder
->base
.dev
;
234 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
235 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
236 u32 ctl_reg
, stat_reg
;
238 if (HAS_PCH_SPLIT(dev
)) {
239 ctl_reg
= PCH_PP_CONTROL
;
240 stat_reg
= PCH_PP_STATUS
;
242 ctl_reg
= PP_CONTROL
;
243 stat_reg
= PP_STATUS
;
246 intel_panel_disable_backlight(dev
);
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 int intel_lvds_mode_valid(struct drm_connector
*connector
,
257 struct drm_display_mode
*mode
)
259 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
260 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
262 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
264 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
270 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
271 struct intel_crtc_config
*pipe_config
)
273 struct drm_device
*dev
= intel_encoder
->base
.dev
;
274 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
275 struct intel_lvds_encoder
*lvds_encoder
=
276 to_lvds_encoder(&intel_encoder
->base
);
277 struct intel_connector
*intel_connector
=
278 &lvds_encoder
->attached_connector
->base
;
279 struct drm_display_mode
*adjusted_mode
= &pipe_config
->adjusted_mode
;
280 struct intel_crtc
*intel_crtc
= lvds_encoder
->base
.new_crtc
;
281 unsigned int lvds_bpp
;
283 /* Should never happen!! */
284 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
285 DRM_ERROR("Can't support LVDS on pipe A\n");
289 if ((I915_READ(lvds_encoder
->reg
) & LVDS_A3_POWER_MASK
) ==
295 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
296 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
297 pipe_config
->pipe_bpp
, lvds_bpp
);
298 pipe_config
->pipe_bpp
= lvds_bpp
;
302 * We have timings from the BIOS for the panel, put them in
303 * to the adjusted mode. The CRTC will be set up for this mode,
304 * with the panel scaling set up to source from the H/VDisplay
305 * of the original mode.
307 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
310 if (HAS_PCH_SPLIT(dev
)) {
311 pipe_config
->has_pch_encoder
= true;
313 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
314 intel_connector
->panel
.fitting_mode
);
316 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
317 intel_connector
->panel
.fitting_mode
);
322 * XXX: It would be nice to support lower refresh rates on the
323 * panels to reduce power consumption, and perhaps match the
324 * user's requested refresh rate.
330 static void intel_lvds_mode_set(struct intel_encoder
*encoder
)
333 * We don't do anything here, the LVDS port is fully set up in the pre
334 * enable hook - the ordering constraints for enabling the lvds port vs.
335 * enabling the display pll are too strict.
340 * Detect the LVDS connection.
342 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
343 * connected and closed means disconnected. We also send hotplug events as
344 * needed, using lid status notification from the input layer.
346 static enum drm_connector_status
347 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
349 struct drm_device
*dev
= connector
->dev
;
350 enum drm_connector_status status
;
352 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
353 connector
->base
.id
, drm_get_connector_name(connector
));
355 status
= intel_panel_detect(dev
);
356 if (status
!= connector_status_unknown
)
359 return connector_status_connected
;
363 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
365 static int intel_lvds_get_modes(struct drm_connector
*connector
)
367 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
368 struct drm_device
*dev
= connector
->dev
;
369 struct drm_display_mode
*mode
;
371 /* use cached edid if we have one */
372 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
373 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
375 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
379 drm_mode_probed_add(connector
, mode
);
383 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
385 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
389 /* The GPU hangs up on these systems if modeset is performed on LID open */
390 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
392 .callback
= intel_no_modeset_on_lid_dmi_callback
,
393 .ident
= "Toshiba Tecra A11",
395 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
396 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
400 { } /* terminating entry */
404 * Lid events. Note the use of 'modeset':
405 * - we set it to MODESET_ON_LID_OPEN on lid close,
406 * and set it to MODESET_DONE on open
407 * - we use it as a "only once" bit (ie we ignore
408 * duplicate events where it was already properly set)
409 * - the suspend/resume paths will set it to
410 * MODESET_SUSPENDED and ignore the lid open event,
411 * because they restore the mode ("lid open").
413 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
416 struct intel_lvds_connector
*lvds_connector
=
417 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
418 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
419 struct drm_device
*dev
= connector
->dev
;
420 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
422 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
425 mutex_lock(&dev_priv
->modeset_restore_lock
);
426 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
429 * check and update the status of LVDS connector after receiving
430 * the LID nofication event.
432 connector
->status
= connector
->funcs
->detect(connector
, false);
434 /* Don't force modeset on machines where it causes a GPU lockup */
435 if (dmi_check_system(intel_no_modeset_on_lid
))
437 if (!acpi_lid_open()) {
438 /* do modeset on next lid open event */
439 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
443 if (dev_priv
->modeset_restore
== MODESET_DONE
)
446 drm_modeset_lock_all(dev
);
447 intel_modeset_setup_hw_state(dev
, true);
448 drm_modeset_unlock_all(dev
);
450 dev_priv
->modeset_restore
= MODESET_DONE
;
453 mutex_unlock(&dev_priv
->modeset_restore_lock
);
458 * intel_lvds_destroy - unregister and free LVDS structures
459 * @connector: connector to free
461 * Unregister the DDC bus for this connector then free the driver private
464 static void intel_lvds_destroy(struct drm_connector
*connector
)
466 struct intel_lvds_connector
*lvds_connector
=
467 to_lvds_connector(connector
);
469 if (lvds_connector
->lid_notifier
.notifier_call
)
470 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
472 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
473 kfree(lvds_connector
->base
.edid
);
475 intel_panel_fini(&lvds_connector
->base
.panel
);
477 drm_connector_cleanup(connector
);
481 static int intel_lvds_set_property(struct drm_connector
*connector
,
482 struct drm_property
*property
,
485 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
486 struct drm_device
*dev
= connector
->dev
;
488 if (property
== dev
->mode_config
.scaling_mode_property
) {
489 struct drm_crtc
*crtc
;
491 if (value
== DRM_MODE_SCALE_NONE
) {
492 DRM_DEBUG_KMS("no scaling not supported\n");
496 if (intel_connector
->panel
.fitting_mode
== value
) {
497 /* the LVDS scaling property is not changed */
500 intel_connector
->panel
.fitting_mode
= value
;
502 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
503 if (crtc
&& crtc
->enabled
) {
505 * If the CRTC is enabled, the display will be changed
506 * according to the new panel fitting mode.
508 intel_crtc_restore_mode(crtc
);
515 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
516 .get_modes
= intel_lvds_get_modes
,
517 .mode_valid
= intel_lvds_mode_valid
,
518 .best_encoder
= intel_best_encoder
,
521 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
522 .dpms
= intel_connector_dpms
,
523 .detect
= intel_lvds_detect
,
524 .fill_modes
= drm_helper_probe_single_connector_modes
,
525 .set_property
= intel_lvds_set_property
,
526 .destroy
= intel_lvds_destroy
,
529 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
530 .destroy
= intel_encoder_destroy
,
533 static int __init
intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
535 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
539 /* These systems claim to have LVDS, but really don't */
540 static const struct dmi_system_id intel_no_lvds
[] = {
542 .callback
= intel_no_lvds_dmi_callback
,
543 .ident
= "Apple Mac Mini (Core series)",
545 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
546 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
550 .callback
= intel_no_lvds_dmi_callback
,
551 .ident
= "Apple Mac Mini (Core 2 series)",
553 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
554 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
558 .callback
= intel_no_lvds_dmi_callback
,
559 .ident
= "MSI IM-945GSE-A",
561 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
562 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
566 .callback
= intel_no_lvds_dmi_callback
,
567 .ident
= "Dell Studio Hybrid",
569 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
570 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
574 .callback
= intel_no_lvds_dmi_callback
,
575 .ident
= "Dell OptiPlex FX170",
577 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
578 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
582 .callback
= intel_no_lvds_dmi_callback
,
583 .ident
= "AOpen Mini PC",
585 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
586 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
590 .callback
= intel_no_lvds_dmi_callback
,
591 .ident
= "AOpen Mini PC MP915",
593 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
594 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
598 .callback
= intel_no_lvds_dmi_callback
,
599 .ident
= "AOpen i915GMm-HFS",
601 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
602 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
606 .callback
= intel_no_lvds_dmi_callback
,
607 .ident
= "AOpen i45GMx-I",
609 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
610 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
614 .callback
= intel_no_lvds_dmi_callback
,
615 .ident
= "Aopen i945GTt-VFA",
617 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
621 .callback
= intel_no_lvds_dmi_callback
,
622 .ident
= "Clientron U800",
624 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
625 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
629 .callback
= intel_no_lvds_dmi_callback
,
630 .ident
= "Clientron E830",
632 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
633 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
637 .callback
= intel_no_lvds_dmi_callback
,
638 .ident
= "Asus EeeBox PC EB1007",
640 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
641 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
645 .callback
= intel_no_lvds_dmi_callback
,
646 .ident
= "Asus AT5NM10T-I",
648 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
649 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
653 .callback
= intel_no_lvds_dmi_callback
,
654 .ident
= "Hewlett-Packard HP t5740",
656 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
657 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
661 .callback
= intel_no_lvds_dmi_callback
,
662 .ident
= "Hewlett-Packard t5745",
664 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
665 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
669 .callback
= intel_no_lvds_dmi_callback
,
670 .ident
= "Hewlett-Packard st5747",
672 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
673 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
677 .callback
= intel_no_lvds_dmi_callback
,
678 .ident
= "MSI Wind Box DC500",
680 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
681 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
685 .callback
= intel_no_lvds_dmi_callback
,
686 .ident
= "Gigabyte GA-D525TUD",
688 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
689 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
693 .callback
= intel_no_lvds_dmi_callback
,
694 .ident
= "Supermicro X7SPA-H",
696 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
697 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
701 .callback
= intel_no_lvds_dmi_callback
,
702 .ident
= "Fujitsu Esprimo Q900",
704 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
705 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
709 .callback
= intel_no_lvds_dmi_callback
,
710 .ident
= "Intel D410PT",
712 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
713 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
717 .callback
= intel_no_lvds_dmi_callback
,
718 .ident
= "Intel D425KT",
720 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
721 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
725 .callback
= intel_no_lvds_dmi_callback
,
726 .ident
= "Intel D510MO",
728 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
729 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
733 .callback
= intel_no_lvds_dmi_callback
,
734 .ident
= "Intel D525MW",
736 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
737 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
741 { } /* terminating entry */
745 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
747 * @connector: LVDS connector
749 * Find the reduced downclock for LVDS in EDID.
751 static void intel_find_lvds_downclock(struct drm_device
*dev
,
752 struct drm_display_mode
*fixed_mode
,
753 struct drm_connector
*connector
)
755 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
756 struct drm_display_mode
*scan
;
759 temp_downclock
= fixed_mode
->clock
;
760 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
762 * If one mode has the same resolution with the fixed_panel
763 * mode while they have the different refresh rate, it means
764 * that the reduced downclock is found for the LVDS. In such
765 * case we can set the different FPx0/1 to dynamically select
766 * between low and high frequency.
768 if (scan
->hdisplay
== fixed_mode
->hdisplay
&&
769 scan
->hsync_start
== fixed_mode
->hsync_start
&&
770 scan
->hsync_end
== fixed_mode
->hsync_end
&&
771 scan
->htotal
== fixed_mode
->htotal
&&
772 scan
->vdisplay
== fixed_mode
->vdisplay
&&
773 scan
->vsync_start
== fixed_mode
->vsync_start
&&
774 scan
->vsync_end
== fixed_mode
->vsync_end
&&
775 scan
->vtotal
== fixed_mode
->vtotal
) {
776 if (scan
->clock
< temp_downclock
) {
778 * The downclock is already found. But we
779 * expect to find the lower downclock.
781 temp_downclock
= scan
->clock
;
785 if (temp_downclock
< fixed_mode
->clock
&& i915_lvds_downclock
) {
786 /* We found the downclock for LVDS. */
787 dev_priv
->lvds_downclock_avail
= 1;
788 dev_priv
->lvds_downclock
= temp_downclock
;
789 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
790 "Normal clock %dKhz, downclock %dKhz\n",
791 fixed_mode
->clock
, temp_downclock
);
796 * Enumerate the child dev array parsed from VBT to check whether
797 * the LVDS is present.
798 * If it is present, return 1.
799 * If it is not present, return false.
800 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
802 static bool lvds_is_present_in_vbt(struct drm_device
*dev
,
805 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
808 if (!dev_priv
->vbt
.child_dev_num
)
811 for (i
= 0; i
< dev_priv
->vbt
.child_dev_num
; i
++) {
812 union child_device_config
*uchild
= dev_priv
->vbt
.child_dev
+ i
;
813 struct old_child_dev_config
*child
= &uchild
->old
;
815 /* If the device type is not LFP, continue.
816 * We have to check both the new identifiers as well as the
817 * old for compatibility with some BIOSes.
819 if (child
->device_type
!= DEVICE_TYPE_INT_LFP
&&
820 child
->device_type
!= DEVICE_TYPE_LFP
)
823 if (intel_gmbus_is_port_valid(child
->i2c_pin
))
824 *i2c_pin
= child
->i2c_pin
;
826 /* However, we cannot trust the BIOS writers to populate
827 * the VBT correctly. Since LVDS requires additional
828 * information from AIM blocks, a non-zero addin offset is
829 * a good indicator that the LVDS is actually present.
831 if (child
->addin_offset
)
834 /* But even then some BIOS writers perform some black magic
835 * and instantiate the device without reference to any
836 * additional data. Trust that if the VBT was written into
837 * the OpRegion then they have validated the LVDS's existence.
839 if (dev_priv
->opregion
.vbt
)
846 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
848 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
852 static const struct dmi_system_id intel_dual_link_lvds
[] = {
854 .callback
= intel_dual_link_lvds_callback
,
855 .ident
= "Apple MacBook Pro (Core i5/i7 Series)",
857 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
858 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
861 { } /* terminating entry */
864 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
866 struct intel_encoder
*encoder
;
867 struct intel_lvds_encoder
*lvds_encoder
;
869 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
,
871 if (encoder
->type
== INTEL_OUTPUT_LVDS
) {
872 lvds_encoder
= to_lvds_encoder(&encoder
->base
);
874 return lvds_encoder
->is_dual_link
;
881 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
883 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
885 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
887 /* use the module option value if specified */
888 if (i915_lvds_channel_mode
> 0)
889 return i915_lvds_channel_mode
== 2;
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
;
940 struct drm_crtc
*crtc
;
945 if (!intel_lvds_supported(dev
))
948 /* Skip init on machines we know falsely report LVDS */
949 if (dmi_check_system(intel_no_lvds
))
952 pin
= GMBUS_PORT_PANEL
;
953 if (!lvds_is_present_in_vbt(dev
, &pin
)) {
954 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
958 if (HAS_PCH_SPLIT(dev
)) {
959 if ((I915_READ(PCH_LVDS
) & LVDS_DETECTED
) == 0)
961 if (dev_priv
->vbt
.edp_support
) {
962 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
967 lvds_encoder
= kzalloc(sizeof(*lvds_encoder
), GFP_KERNEL
);
971 lvds_connector
= kzalloc(sizeof(*lvds_connector
), GFP_KERNEL
);
972 if (!lvds_connector
) {
977 lvds_encoder
->attached_connector
= lvds_connector
;
979 intel_encoder
= &lvds_encoder
->base
;
980 encoder
= &intel_encoder
->base
;
981 intel_connector
= &lvds_connector
->base
;
982 connector
= &intel_connector
->base
;
983 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
984 DRM_MODE_CONNECTOR_LVDS
);
986 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
987 DRM_MODE_ENCODER_LVDS
);
989 intel_encoder
->enable
= intel_enable_lvds
;
990 intel_encoder
->pre_enable
= intel_pre_enable_lvds
;
991 intel_encoder
->compute_config
= intel_lvds_compute_config
;
992 intel_encoder
->mode_set
= intel_lvds_mode_set
;
993 intel_encoder
->disable
= intel_disable_lvds
;
994 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
995 intel_encoder
->get_config
= intel_lvds_get_config
;
996 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
998 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
999 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
1001 intel_encoder
->cloneable
= false;
1002 if (HAS_PCH_SPLIT(dev
))
1003 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
1004 else if (IS_GEN4(dev
))
1005 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
1007 intel_encoder
->crtc_mask
= (1 << 1);
1009 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
1010 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
1011 connector
->interlace_allowed
= false;
1012 connector
->doublescan_allowed
= false;
1014 if (HAS_PCH_SPLIT(dev
)) {
1015 lvds_encoder
->reg
= PCH_LVDS
;
1017 lvds_encoder
->reg
= LVDS
;
1020 /* create the scaling mode property */
1021 drm_mode_create_scaling_mode_property(dev
);
1022 drm_object_attach_property(&connector
->base
,
1023 dev
->mode_config
.scaling_mode_property
,
1024 DRM_MODE_SCALE_ASPECT
);
1025 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
1028 * 1) check for EDID on DDC
1029 * 2) check for VBT data
1030 * 3) check to see if LVDS is already on
1031 * if none of the above, no panel
1032 * 4) make sure lid is open
1033 * if closed, act like it's not there for now
1037 * Attempt to get the fixed panel mode from DDC. Assume that the
1038 * preferred mode is the right one.
1040 edid
= drm_get_edid(connector
, intel_gmbus_get_adapter(dev_priv
, pin
));
1042 if (drm_add_edid_modes(connector
, edid
)) {
1043 drm_mode_connector_update_edid_property(connector
,
1047 edid
= ERR_PTR(-EINVAL
);
1050 edid
= ERR_PTR(-ENOENT
);
1052 lvds_connector
->base
.edid
= edid
;
1054 if (IS_ERR_OR_NULL(edid
)) {
1055 /* Didn't get an EDID, so
1056 * Set wide sync ranges so we get all modes
1057 * handed to valid_mode for checking
1059 connector
->display_info
.min_vfreq
= 0;
1060 connector
->display_info
.max_vfreq
= 200;
1061 connector
->display_info
.min_hfreq
= 0;
1062 connector
->display_info
.max_hfreq
= 200;
1065 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1066 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1067 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1068 drm_mode_debug_printmodeline(scan
);
1070 fixed_mode
= drm_mode_duplicate(dev
, scan
);
1072 intel_find_lvds_downclock(dev
, fixed_mode
,
1079 /* Failed to get EDID, what about VBT? */
1080 if (dev_priv
->vbt
.lfp_lvds_vbt_mode
) {
1081 DRM_DEBUG_KMS("using mode from VBT: ");
1082 drm_mode_debug_printmodeline(dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1084 fixed_mode
= drm_mode_duplicate(dev
, dev_priv
->vbt
.lfp_lvds_vbt_mode
);
1086 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1092 * If we didn't get EDID, try checking if the panel is already turned
1093 * on. If so, assume that whatever is currently programmed is the
1097 /* Ironlake: FIXME if still fail, not try pipe mode now */
1098 if (HAS_PCH_SPLIT(dev
))
1101 lvds
= I915_READ(LVDS
);
1102 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1103 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1105 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1106 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1108 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1109 drm_mode_debug_printmodeline(fixed_mode
);
1110 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1115 /* If we still don't have a mode after all that, give up. */
1120 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1121 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1122 lvds_encoder
->is_dual_link
? "dual" : "single");
1125 * Unlock registers and just
1126 * leave them unlocked
1128 if (HAS_PCH_SPLIT(dev
)) {
1129 I915_WRITE(PCH_PP_CONTROL
,
1130 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1132 I915_WRITE(PP_CONTROL
,
1133 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
1135 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1136 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1137 DRM_DEBUG_KMS("lid notifier registration failed\n");
1138 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1140 drm_sysfs_connector_add(connector
);
1142 intel_panel_init(&intel_connector
->panel
, fixed_mode
);
1143 intel_panel_setup_backlight(connector
);
1148 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1149 drm_connector_cleanup(connector
);
1150 drm_encoder_cleanup(encoder
);
1152 drm_mode_destroy(dev
, fixed_mode
);
1153 kfree(lvds_encoder
);
1154 kfree(lvds_connector
);