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>
34 #include <linux/vga_switcheroo.h>
36 #include <drm/drm_atomic_helper.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include "intel_drv.h"
40 #include <drm/i915_drm.h>
42 #include <linux/acpi.h>
44 /* Private structure for the integrated LVDS support */
45 struct intel_lvds_connector
{
46 struct intel_connector base
;
48 struct notifier_block lid_notifier
;
51 struct intel_lvds_encoder
{
52 struct intel_encoder base
;
58 struct intel_lvds_connector
*attached_connector
;
61 static struct intel_lvds_encoder
*to_lvds_encoder(struct drm_encoder
*encoder
)
63 return container_of(encoder
, struct intel_lvds_encoder
, base
.base
);
66 static struct intel_lvds_connector
*to_lvds_connector(struct drm_connector
*connector
)
68 return container_of(connector
, struct intel_lvds_connector
, base
.base
);
71 static bool intel_lvds_get_hw_state(struct intel_encoder
*encoder
,
74 struct drm_device
*dev
= encoder
->base
.dev
;
75 struct drm_i915_private
*dev_priv
= to_i915(dev
);
76 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
77 enum intel_display_power_domain power_domain
;
81 power_domain
= intel_display_port_power_domain(encoder
);
82 if (!intel_display_power_get_if_enabled(dev_priv
, power_domain
))
87 tmp
= I915_READ(lvds_encoder
->reg
);
89 if (!(tmp
& LVDS_PORT_EN
))
93 *pipe
= PORT_TO_PIPE_CPT(tmp
);
95 *pipe
= PORT_TO_PIPE(tmp
);
100 intel_display_power_put(dev_priv
, power_domain
);
105 static void intel_lvds_get_config(struct intel_encoder
*encoder
,
106 struct intel_crtc_state
*pipe_config
)
108 struct drm_device
*dev
= encoder
->base
.dev
;
109 struct drm_i915_private
*dev_priv
= to_i915(dev
);
110 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
113 tmp
= I915_READ(lvds_encoder
->reg
);
114 if (tmp
& LVDS_HSYNC_POLARITY
)
115 flags
|= DRM_MODE_FLAG_NHSYNC
;
117 flags
|= DRM_MODE_FLAG_PHSYNC
;
118 if (tmp
& LVDS_VSYNC_POLARITY
)
119 flags
|= DRM_MODE_FLAG_NVSYNC
;
121 flags
|= DRM_MODE_FLAG_PVSYNC
;
123 pipe_config
->base
.adjusted_mode
.flags
|= flags
;
125 if (INTEL_INFO(dev
)->gen
< 5)
126 pipe_config
->gmch_pfit
.lvds_border_bits
=
127 tmp
& LVDS_BORDER_ENABLE
;
129 /* gen2/3 store dither state in pfit control, needs to match */
130 if (INTEL_INFO(dev
)->gen
< 4) {
131 tmp
= I915_READ(PFIT_CONTROL
);
133 pipe_config
->gmch_pfit
.control
|= tmp
& PANEL_8TO6_DITHER_ENABLE
;
136 pipe_config
->base
.adjusted_mode
.crtc_clock
= pipe_config
->port_clock
;
139 static void intel_pre_enable_lvds(struct intel_encoder
*encoder
)
141 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
142 struct drm_device
*dev
= encoder
->base
.dev
;
143 struct drm_i915_private
*dev_priv
= to_i915(dev
);
144 struct intel_crtc
*crtc
= to_intel_crtc(encoder
->base
.crtc
);
145 const struct drm_display_mode
*adjusted_mode
= &crtc
->config
->base
.adjusted_mode
;
146 int pipe
= crtc
->pipe
;
149 if (HAS_PCH_SPLIT(dev
)) {
150 assert_fdi_rx_pll_disabled(dev_priv
, pipe
);
151 assert_shared_dpll_disabled(dev_priv
,
152 crtc
->config
->shared_dpll
);
154 assert_pll_disabled(dev_priv
, pipe
);
157 temp
= I915_READ(lvds_encoder
->reg
);
158 temp
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
;
160 if (HAS_PCH_CPT(dev
)) {
161 temp
&= ~PORT_TRANS_SEL_MASK
;
162 temp
|= PORT_TRANS_SEL_CPT(pipe
);
165 temp
|= LVDS_PIPEB_SELECT
;
167 temp
&= ~LVDS_PIPEB_SELECT
;
171 /* set the corresponsding LVDS_BORDER bit */
172 temp
&= ~LVDS_BORDER_ENABLE
;
173 temp
|= crtc
->config
->gmch_pfit
.lvds_border_bits
;
174 /* Set the B0-B3 data pairs corresponding to whether we're going to
175 * set the DPLLs for dual-channel mode or not.
177 if (lvds_encoder
->is_dual_link
)
178 temp
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
180 temp
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
182 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
183 * appropriately here, but we need to look more thoroughly into how
184 * panels behave in the two modes. For now, let's just maintain the
185 * value we got from the BIOS.
187 temp
&= ~LVDS_A3_POWER_MASK
;
188 temp
|= lvds_encoder
->a3_power
;
190 /* Set the dithering flag on LVDS as needed, note that there is no
191 * special lvds dither control bit on pch-split platforms, dithering is
192 * only controlled through the PIPECONF reg. */
193 if (IS_GEN4(dev_priv
)) {
194 /* Bspec wording suggests that LVDS port dithering only exists
195 * for 18bpp panels. */
196 if (crtc
->config
->dither
&& crtc
->config
->pipe_bpp
== 18)
197 temp
|= LVDS_ENABLE_DITHER
;
199 temp
&= ~LVDS_ENABLE_DITHER
;
201 temp
&= ~(LVDS_HSYNC_POLARITY
| LVDS_VSYNC_POLARITY
);
202 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NHSYNC
)
203 temp
|= LVDS_HSYNC_POLARITY
;
204 if (adjusted_mode
->flags
& DRM_MODE_FLAG_NVSYNC
)
205 temp
|= LVDS_VSYNC_POLARITY
;
207 I915_WRITE(lvds_encoder
->reg
, temp
);
211 * Sets the power state for the panel.
213 static void intel_enable_lvds(struct intel_encoder
*encoder
)
215 struct drm_device
*dev
= encoder
->base
.dev
;
216 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
217 struct intel_connector
*intel_connector
=
218 &lvds_encoder
->attached_connector
->base
;
219 struct drm_i915_private
*dev_priv
= to_i915(dev
);
220 i915_reg_t ctl_reg
, stat_reg
;
222 if (HAS_PCH_SPLIT(dev
)) {
223 ctl_reg
= PCH_PP_CONTROL
;
224 stat_reg
= PCH_PP_STATUS
;
226 ctl_reg
= PP_CONTROL
;
227 stat_reg
= PP_STATUS
;
230 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) | LVDS_PORT_EN
);
232 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) | POWER_TARGET_ON
);
233 POSTING_READ(lvds_encoder
->reg
);
234 if (intel_wait_for_register(dev_priv
, stat_reg
, PP_ON
, PP_ON
, 1000))
235 DRM_ERROR("timed out waiting for panel to power on\n");
237 intel_panel_enable_backlight(intel_connector
);
240 static void intel_disable_lvds(struct intel_encoder
*encoder
)
242 struct drm_device
*dev
= encoder
->base
.dev
;
243 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
244 struct drm_i915_private
*dev_priv
= to_i915(dev
);
245 i915_reg_t ctl_reg
, stat_reg
;
247 if (HAS_PCH_SPLIT(dev
)) {
248 ctl_reg
= PCH_PP_CONTROL
;
249 stat_reg
= PCH_PP_STATUS
;
251 ctl_reg
= PP_CONTROL
;
252 stat_reg
= PP_STATUS
;
255 I915_WRITE(ctl_reg
, I915_READ(ctl_reg
) & ~POWER_TARGET_ON
);
256 if (intel_wait_for_register(dev_priv
, stat_reg
, PP_ON
, 0, 1000))
257 DRM_ERROR("timed out waiting for panel to power off\n");
259 I915_WRITE(lvds_encoder
->reg
, I915_READ(lvds_encoder
->reg
) & ~LVDS_PORT_EN
);
260 POSTING_READ(lvds_encoder
->reg
);
263 static void gmch_disable_lvds(struct intel_encoder
*encoder
)
265 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
266 struct intel_connector
*intel_connector
=
267 &lvds_encoder
->attached_connector
->base
;
269 intel_panel_disable_backlight(intel_connector
);
271 intel_disable_lvds(encoder
);
274 static void pch_disable_lvds(struct intel_encoder
*encoder
)
276 struct intel_lvds_encoder
*lvds_encoder
= to_lvds_encoder(&encoder
->base
);
277 struct intel_connector
*intel_connector
=
278 &lvds_encoder
->attached_connector
->base
;
280 intel_panel_disable_backlight(intel_connector
);
283 static void pch_post_disable_lvds(struct intel_encoder
*encoder
)
285 intel_disable_lvds(encoder
);
288 static enum drm_mode_status
289 intel_lvds_mode_valid(struct drm_connector
*connector
,
290 struct drm_display_mode
*mode
)
292 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
293 struct drm_display_mode
*fixed_mode
= intel_connector
->panel
.fixed_mode
;
294 int max_pixclk
= to_i915(connector
->dev
)->max_dotclk_freq
;
296 if (mode
->hdisplay
> fixed_mode
->hdisplay
)
298 if (mode
->vdisplay
> fixed_mode
->vdisplay
)
300 if (fixed_mode
->clock
> max_pixclk
)
301 return MODE_CLOCK_HIGH
;
306 static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder
,
307 struct intel_crtc_state
*pipe_config
)
309 struct drm_device
*dev
= intel_encoder
->base
.dev
;
310 struct intel_lvds_encoder
*lvds_encoder
=
311 to_lvds_encoder(&intel_encoder
->base
);
312 struct intel_connector
*intel_connector
=
313 &lvds_encoder
->attached_connector
->base
;
314 struct drm_display_mode
*adjusted_mode
= &pipe_config
->base
.adjusted_mode
;
315 struct intel_crtc
*intel_crtc
= to_intel_crtc(pipe_config
->base
.crtc
);
316 unsigned int lvds_bpp
;
318 /* Should never happen!! */
319 if (INTEL_INFO(dev
)->gen
< 4 && intel_crtc
->pipe
== 0) {
320 DRM_ERROR("Can't support LVDS on pipe A\n");
324 if (lvds_encoder
->a3_power
== LVDS_A3_POWER_UP
)
329 if (lvds_bpp
!= pipe_config
->pipe_bpp
&& !pipe_config
->bw_constrained
) {
330 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
331 pipe_config
->pipe_bpp
, lvds_bpp
);
332 pipe_config
->pipe_bpp
= lvds_bpp
;
336 * We have timings from the BIOS for the panel, put them in
337 * to the adjusted mode. The CRTC will be set up for this mode,
338 * with the panel scaling set up to source from the H/VDisplay
339 * of the original mode.
341 intel_fixed_panel_mode(intel_connector
->panel
.fixed_mode
,
344 if (HAS_PCH_SPLIT(dev
)) {
345 pipe_config
->has_pch_encoder
= true;
347 intel_pch_panel_fitting(intel_crtc
, pipe_config
,
348 intel_connector
->panel
.fitting_mode
);
350 intel_gmch_panel_fitting(intel_crtc
, pipe_config
,
351 intel_connector
->panel
.fitting_mode
);
356 * XXX: It would be nice to support lower refresh rates on the
357 * panels to reduce power consumption, and perhaps match the
358 * user's requested refresh rate.
365 * Detect the LVDS connection.
367 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
368 * connected and closed means disconnected. We also send hotplug events as
369 * needed, using lid status notification from the input layer.
371 static enum drm_connector_status
372 intel_lvds_detect(struct drm_connector
*connector
, bool force
)
374 struct drm_device
*dev
= connector
->dev
;
375 enum drm_connector_status status
;
377 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
378 connector
->base
.id
, connector
->name
);
380 status
= intel_panel_detect(dev
);
381 if (status
!= connector_status_unknown
)
384 return connector_status_connected
;
388 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
390 static int intel_lvds_get_modes(struct drm_connector
*connector
)
392 struct intel_lvds_connector
*lvds_connector
= to_lvds_connector(connector
);
393 struct drm_device
*dev
= connector
->dev
;
394 struct drm_display_mode
*mode
;
396 /* use cached edid if we have one */
397 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
398 return drm_add_edid_modes(connector
, lvds_connector
->base
.edid
);
400 mode
= drm_mode_duplicate(dev
, lvds_connector
->base
.panel
.fixed_mode
);
404 drm_mode_probed_add(connector
, mode
);
408 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id
*id
)
410 DRM_INFO("Skipping forced modeset for %s\n", id
->ident
);
414 /* The GPU hangs up on these systems if modeset is performed on LID open */
415 static const struct dmi_system_id intel_no_modeset_on_lid
[] = {
417 .callback
= intel_no_modeset_on_lid_dmi_callback
,
418 .ident
= "Toshiba Tecra A11",
420 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
421 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A11"),
425 { } /* terminating entry */
429 * Lid events. Note the use of 'modeset':
430 * - we set it to MODESET_ON_LID_OPEN on lid close,
431 * and set it to MODESET_DONE on open
432 * - we use it as a "only once" bit (ie we ignore
433 * duplicate events where it was already properly set)
434 * - the suspend/resume paths will set it to
435 * MODESET_SUSPENDED and ignore the lid open event,
436 * because they restore the mode ("lid open").
438 static int intel_lid_notify(struct notifier_block
*nb
, unsigned long val
,
441 struct intel_lvds_connector
*lvds_connector
=
442 container_of(nb
, struct intel_lvds_connector
, lid_notifier
);
443 struct drm_connector
*connector
= &lvds_connector
->base
.base
;
444 struct drm_device
*dev
= connector
->dev
;
445 struct drm_i915_private
*dev_priv
= to_i915(dev
);
447 if (dev
->switch_power_state
!= DRM_SWITCH_POWER_ON
)
450 mutex_lock(&dev_priv
->modeset_restore_lock
);
451 if (dev_priv
->modeset_restore
== MODESET_SUSPENDED
)
454 * check and update the status of LVDS connector after receiving
455 * the LID nofication event.
457 connector
->status
= connector
->funcs
->detect(connector
, false);
459 /* Don't force modeset on machines where it causes a GPU lockup */
460 if (dmi_check_system(intel_no_modeset_on_lid
))
462 if (!acpi_lid_open()) {
463 /* do modeset on next lid open event */
464 dev_priv
->modeset_restore
= MODESET_ON_LID_OPEN
;
468 if (dev_priv
->modeset_restore
== MODESET_DONE
)
472 * Some old platform's BIOS love to wreak havoc while the lid is closed.
473 * We try to detect this here and undo any damage. The split for PCH
474 * platforms is rather conservative and a bit arbitrary expect that on
475 * those platforms VGA disabling requires actual legacy VGA I/O access,
476 * and as part of the cleanup in the hw state restore we also redisable
479 if (!HAS_PCH_SPLIT(dev
))
480 intel_display_resume(dev
);
482 dev_priv
->modeset_restore
= MODESET_DONE
;
485 mutex_unlock(&dev_priv
->modeset_restore_lock
);
490 * intel_lvds_destroy - unregister and free LVDS structures
491 * @connector: connector to free
493 * Unregister the DDC bus for this connector then free the driver private
496 static void intel_lvds_destroy(struct drm_connector
*connector
)
498 struct intel_lvds_connector
*lvds_connector
=
499 to_lvds_connector(connector
);
501 if (lvds_connector
->lid_notifier
.notifier_call
)
502 acpi_lid_notifier_unregister(&lvds_connector
->lid_notifier
);
504 if (!IS_ERR_OR_NULL(lvds_connector
->base
.edid
))
505 kfree(lvds_connector
->base
.edid
);
507 intel_panel_fini(&lvds_connector
->base
.panel
);
509 drm_connector_cleanup(connector
);
513 static int intel_lvds_set_property(struct drm_connector
*connector
,
514 struct drm_property
*property
,
517 struct intel_connector
*intel_connector
= to_intel_connector(connector
);
518 struct drm_device
*dev
= connector
->dev
;
520 if (property
== dev
->mode_config
.scaling_mode_property
) {
521 struct drm_crtc
*crtc
;
523 if (value
== DRM_MODE_SCALE_NONE
) {
524 DRM_DEBUG_KMS("no scaling not supported\n");
528 if (intel_connector
->panel
.fitting_mode
== value
) {
529 /* the LVDS scaling property is not changed */
532 intel_connector
->panel
.fitting_mode
= value
;
534 crtc
= intel_attached_encoder(connector
)->base
.crtc
;
535 if (crtc
&& crtc
->state
->enable
) {
537 * If the CRTC is enabled, the display will be changed
538 * according to the new panel fitting mode.
540 intel_crtc_restore_mode(crtc
);
547 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs
= {
548 .get_modes
= intel_lvds_get_modes
,
549 .mode_valid
= intel_lvds_mode_valid
,
552 static const struct drm_connector_funcs intel_lvds_connector_funcs
= {
553 .dpms
= drm_atomic_helper_connector_dpms
,
554 .detect
= intel_lvds_detect
,
555 .fill_modes
= drm_helper_probe_single_connector_modes
,
556 .set_property
= intel_lvds_set_property
,
557 .atomic_get_property
= intel_connector_atomic_get_property
,
558 .late_register
= intel_connector_register
,
559 .early_unregister
= intel_connector_unregister
,
560 .destroy
= intel_lvds_destroy
,
561 .atomic_destroy_state
= drm_atomic_helper_connector_destroy_state
,
562 .atomic_duplicate_state
= drm_atomic_helper_connector_duplicate_state
,
565 static const struct drm_encoder_funcs intel_lvds_enc_funcs
= {
566 .destroy
= intel_encoder_destroy
,
569 static int intel_no_lvds_dmi_callback(const struct dmi_system_id
*id
)
571 DRM_INFO("Skipping LVDS initialization for %s\n", id
->ident
);
575 /* These systems claim to have LVDS, but really don't */
576 static const struct dmi_system_id intel_no_lvds
[] = {
578 .callback
= intel_no_lvds_dmi_callback
,
579 .ident
= "Apple Mac Mini (Core series)",
581 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
582 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini1,1"),
586 .callback
= intel_no_lvds_dmi_callback
,
587 .ident
= "Apple Mac Mini (Core 2 series)",
589 DMI_MATCH(DMI_SYS_VENDOR
, "Apple"),
590 DMI_MATCH(DMI_PRODUCT_NAME
, "Macmini2,1"),
594 .callback
= intel_no_lvds_dmi_callback
,
595 .ident
= "MSI IM-945GSE-A",
597 DMI_MATCH(DMI_SYS_VENDOR
, "MSI"),
598 DMI_MATCH(DMI_PRODUCT_NAME
, "A9830IMS"),
602 .callback
= intel_no_lvds_dmi_callback
,
603 .ident
= "Dell Studio Hybrid",
605 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
606 DMI_MATCH(DMI_PRODUCT_NAME
, "Studio Hybrid 140g"),
610 .callback
= intel_no_lvds_dmi_callback
,
611 .ident
= "Dell OptiPlex FX170",
613 DMI_MATCH(DMI_SYS_VENDOR
, "Dell Inc."),
614 DMI_MATCH(DMI_PRODUCT_NAME
, "OptiPlex FX170"),
618 .callback
= intel_no_lvds_dmi_callback
,
619 .ident
= "AOpen Mini PC",
621 DMI_MATCH(DMI_SYS_VENDOR
, "AOpen"),
622 DMI_MATCH(DMI_PRODUCT_NAME
, "i965GMx-IF"),
626 .callback
= intel_no_lvds_dmi_callback
,
627 .ident
= "AOpen Mini PC MP915",
629 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
630 DMI_MATCH(DMI_BOARD_NAME
, "i915GMx-F"),
634 .callback
= intel_no_lvds_dmi_callback
,
635 .ident
= "AOpen i915GMm-HFS",
637 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
638 DMI_MATCH(DMI_BOARD_NAME
, "i915GMm-HFS"),
642 .callback
= intel_no_lvds_dmi_callback
,
643 .ident
= "AOpen i45GMx-I",
645 DMI_MATCH(DMI_BOARD_VENDOR
, "AOpen"),
646 DMI_MATCH(DMI_BOARD_NAME
, "i45GMx-I"),
650 .callback
= intel_no_lvds_dmi_callback
,
651 .ident
= "Aopen i945GTt-VFA",
653 DMI_MATCH(DMI_PRODUCT_VERSION
, "AO00001JW"),
657 .callback
= intel_no_lvds_dmi_callback
,
658 .ident
= "Clientron U800",
660 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
661 DMI_MATCH(DMI_PRODUCT_NAME
, "U800"),
665 .callback
= intel_no_lvds_dmi_callback
,
666 .ident
= "Clientron E830",
668 DMI_MATCH(DMI_SYS_VENDOR
, "Clientron"),
669 DMI_MATCH(DMI_PRODUCT_NAME
, "E830"),
673 .callback
= intel_no_lvds_dmi_callback
,
674 .ident
= "Asus EeeBox PC EB1007",
676 DMI_MATCH(DMI_SYS_VENDOR
, "ASUSTeK Computer INC."),
677 DMI_MATCH(DMI_PRODUCT_NAME
, "EB1007"),
681 .callback
= intel_no_lvds_dmi_callback
,
682 .ident
= "Asus AT5NM10T-I",
684 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
685 DMI_MATCH(DMI_BOARD_NAME
, "AT5NM10T-I"),
689 .callback
= intel_no_lvds_dmi_callback
,
690 .ident
= "Hewlett-Packard HP t5740",
692 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
693 DMI_MATCH(DMI_PRODUCT_NAME
, " t5740"),
697 .callback
= intel_no_lvds_dmi_callback
,
698 .ident
= "Hewlett-Packard t5745",
700 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
701 DMI_MATCH(DMI_PRODUCT_NAME
, "hp t5745"),
705 .callback
= intel_no_lvds_dmi_callback
,
706 .ident
= "Hewlett-Packard st5747",
708 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
709 DMI_MATCH(DMI_PRODUCT_NAME
, "hp st5747"),
713 .callback
= intel_no_lvds_dmi_callback
,
714 .ident
= "MSI Wind Box DC500",
716 DMI_MATCH(DMI_BOARD_VENDOR
, "MICRO-STAR INTERNATIONAL CO., LTD"),
717 DMI_MATCH(DMI_BOARD_NAME
, "MS-7469"),
721 .callback
= intel_no_lvds_dmi_callback
,
722 .ident
= "Gigabyte GA-D525TUD",
724 DMI_MATCH(DMI_BOARD_VENDOR
, "Gigabyte Technology Co., Ltd."),
725 DMI_MATCH(DMI_BOARD_NAME
, "D525TUD"),
729 .callback
= intel_no_lvds_dmi_callback
,
730 .ident
= "Supermicro X7SPA-H",
732 DMI_MATCH(DMI_SYS_VENDOR
, "Supermicro"),
733 DMI_MATCH(DMI_PRODUCT_NAME
, "X7SPA-H"),
737 .callback
= intel_no_lvds_dmi_callback
,
738 .ident
= "Fujitsu Esprimo Q900",
740 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU"),
741 DMI_MATCH(DMI_PRODUCT_NAME
, "ESPRIMO Q900"),
745 .callback
= intel_no_lvds_dmi_callback
,
746 .ident
= "Intel D410PT",
748 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
749 DMI_MATCH(DMI_BOARD_NAME
, "D410PT"),
753 .callback
= intel_no_lvds_dmi_callback
,
754 .ident
= "Intel D425KT",
756 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
757 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D425KT"),
761 .callback
= intel_no_lvds_dmi_callback
,
762 .ident
= "Intel D510MO",
764 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
765 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D510MO"),
769 .callback
= intel_no_lvds_dmi_callback
,
770 .ident
= "Intel D525MW",
772 DMI_MATCH(DMI_BOARD_VENDOR
, "Intel"),
773 DMI_EXACT_MATCH(DMI_BOARD_NAME
, "D525MW"),
777 { } /* terminating entry */
780 static int intel_dual_link_lvds_callback(const struct dmi_system_id
*id
)
782 DRM_INFO("Forcing lvds to dual link mode on %s\n", id
->ident
);
786 static const struct dmi_system_id intel_dual_link_lvds
[] = {
788 .callback
= intel_dual_link_lvds_callback
,
789 .ident
= "Apple MacBook Pro 15\" (2010)",
791 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
792 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro6,2"),
796 .callback
= intel_dual_link_lvds_callback
,
797 .ident
= "Apple MacBook Pro 15\" (2011)",
799 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
800 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro8,2"),
804 .callback
= intel_dual_link_lvds_callback
,
805 .ident
= "Apple MacBook Pro 15\" (2012)",
807 DMI_MATCH(DMI_SYS_VENDOR
, "Apple Inc."),
808 DMI_MATCH(DMI_PRODUCT_NAME
, "MacBookPro9,1"),
811 { } /* terminating entry */
814 struct intel_encoder
*intel_get_lvds_encoder(struct drm_device
*dev
)
816 struct intel_encoder
*intel_encoder
;
818 for_each_intel_encoder(dev
, intel_encoder
)
819 if (intel_encoder
->type
== INTEL_OUTPUT_LVDS
)
820 return intel_encoder
;
825 bool intel_is_dual_link_lvds(struct drm_device
*dev
)
827 struct intel_encoder
*encoder
= intel_get_lvds_encoder(dev
);
829 return encoder
&& to_lvds_encoder(&encoder
->base
)->is_dual_link
;
832 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder
*lvds_encoder
)
834 struct drm_device
*dev
= lvds_encoder
->base
.base
.dev
;
836 struct drm_i915_private
*dev_priv
= to_i915(dev
);
838 /* use the module option value if specified */
839 if (i915
.lvds_channel_mode
> 0)
840 return i915
.lvds_channel_mode
== 2;
842 /* single channel LVDS is limited to 112 MHz */
843 if (lvds_encoder
->attached_connector
->base
.panel
.fixed_mode
->clock
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
= to_i915(dev
);
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
;
904 * Unlock registers and just leave them unlocked. Do this before
905 * checking quirk lists to avoid bogus WARNINGs.
907 if (HAS_PCH_SPLIT(dev
)) {
908 I915_WRITE(PCH_PP_CONTROL
,
909 I915_READ(PCH_PP_CONTROL
) | PANEL_UNLOCK_REGS
);
910 } else if (INTEL_INFO(dev_priv
)->gen
< 5) {
911 I915_WRITE(PP_CONTROL
,
912 I915_READ(PP_CONTROL
) | PANEL_UNLOCK_REGS
);
914 if (!intel_lvds_supported(dev
))
917 /* Skip init on machines we know falsely report LVDS */
918 if (dmi_check_system(intel_no_lvds
))
921 if (HAS_PCH_SPLIT(dev
))
926 lvds
= I915_READ(lvds_reg
);
928 if (HAS_PCH_SPLIT(dev
)) {
929 if ((lvds
& LVDS_DETECTED
) == 0)
931 if (dev_priv
->vbt
.edp
.support
) {
932 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
937 pin
= GMBUS_PIN_PANEL
;
938 if (!intel_bios_is_lvds_present(dev_priv
, &pin
)) {
939 if ((lvds
& LVDS_PORT_EN
) == 0) {
940 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
943 DRM_DEBUG_KMS("LVDS is not present in VBT, but enabled anyway\n");
946 /* Set the Panel Power On/Off timings if uninitialized. */
947 if (INTEL_INFO(dev_priv
)->gen
< 5 &&
948 I915_READ(PP_ON_DELAYS
) == 0 && I915_READ(PP_OFF_DELAYS
) == 0) {
949 /* Set T2 to 40ms and T5 to 200ms */
950 I915_WRITE(PP_ON_DELAYS
, 0x019007d0);
952 /* Set T3 to 35ms and Tx to 200ms */
953 I915_WRITE(PP_OFF_DELAYS
, 0x015e07d0);
955 DRM_DEBUG_KMS("Panel power timings uninitialized, setting defaults\n");
958 lvds_encoder
= kzalloc(sizeof(*lvds_encoder
), GFP_KERNEL
);
962 lvds_connector
= kzalloc(sizeof(*lvds_connector
), GFP_KERNEL
);
963 if (!lvds_connector
) {
968 if (intel_connector_init(&lvds_connector
->base
) < 0) {
969 kfree(lvds_connector
);
974 lvds_encoder
->attached_connector
= lvds_connector
;
976 intel_encoder
= &lvds_encoder
->base
;
977 encoder
= &intel_encoder
->base
;
978 intel_connector
= &lvds_connector
->base
;
979 connector
= &intel_connector
->base
;
980 drm_connector_init(dev
, &intel_connector
->base
, &intel_lvds_connector_funcs
,
981 DRM_MODE_CONNECTOR_LVDS
);
983 drm_encoder_init(dev
, &intel_encoder
->base
, &intel_lvds_enc_funcs
,
984 DRM_MODE_ENCODER_LVDS
, "LVDS");
986 intel_encoder
->enable
= intel_enable_lvds
;
987 intel_encoder
->pre_enable
= intel_pre_enable_lvds
;
988 intel_encoder
->compute_config
= intel_lvds_compute_config
;
989 if (HAS_PCH_SPLIT(dev_priv
)) {
990 intel_encoder
->disable
= pch_disable_lvds
;
991 intel_encoder
->post_disable
= pch_post_disable_lvds
;
993 intel_encoder
->disable
= gmch_disable_lvds
;
995 intel_encoder
->get_hw_state
= intel_lvds_get_hw_state
;
996 intel_encoder
->get_config
= intel_lvds_get_config
;
997 intel_connector
->get_hw_state
= intel_connector_get_hw_state
;
999 intel_connector_attach_encoder(intel_connector
, intel_encoder
);
1000 intel_encoder
->type
= INTEL_OUTPUT_LVDS
;
1002 intel_encoder
->cloneable
= 0;
1003 if (HAS_PCH_SPLIT(dev
))
1004 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1) | (1 << 2);
1005 else if (IS_GEN4(dev
))
1006 intel_encoder
->crtc_mask
= (1 << 0) | (1 << 1);
1008 intel_encoder
->crtc_mask
= (1 << 1);
1010 drm_connector_helper_add(connector
, &intel_lvds_connector_helper_funcs
);
1011 connector
->display_info
.subpixel_order
= SubPixelHorizontalRGB
;
1012 connector
->interlace_allowed
= false;
1013 connector
->doublescan_allowed
= false;
1015 lvds_encoder
->reg
= lvds_reg
;
1017 /* create the scaling mode property */
1018 drm_mode_create_scaling_mode_property(dev
);
1019 drm_object_attach_property(&connector
->base
,
1020 dev
->mode_config
.scaling_mode_property
,
1021 DRM_MODE_SCALE_ASPECT
);
1022 intel_connector
->panel
.fitting_mode
= DRM_MODE_SCALE_ASPECT
;
1025 * 1) check for EDID on DDC
1026 * 2) check for VBT data
1027 * 3) check to see if LVDS is already on
1028 * if none of the above, no panel
1029 * 4) make sure lid is open
1030 * if closed, act like it's not there for now
1034 * Attempt to get the fixed panel mode from DDC. Assume that the
1035 * preferred mode is the right one.
1037 mutex_lock(&dev
->mode_config
.mutex
);
1038 if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC
)
1039 edid
= drm_get_edid_switcheroo(connector
,
1040 intel_gmbus_get_adapter(dev_priv
, pin
));
1042 edid
= drm_get_edid(connector
,
1043 intel_gmbus_get_adapter(dev_priv
, pin
));
1045 if (drm_add_edid_modes(connector
, edid
)) {
1046 drm_mode_connector_update_edid_property(connector
,
1050 edid
= ERR_PTR(-EINVAL
);
1053 edid
= ERR_PTR(-ENOENT
);
1055 lvds_connector
->base
.edid
= edid
;
1057 if (IS_ERR_OR_NULL(edid
)) {
1058 /* Didn't get an EDID, so
1059 * Set wide sync ranges so we get all modes
1060 * handed to valid_mode for checking
1062 connector
->display_info
.min_vfreq
= 0;
1063 connector
->display_info
.max_vfreq
= 200;
1064 connector
->display_info
.min_hfreq
= 0;
1065 connector
->display_info
.max_hfreq
= 200;
1068 list_for_each_entry(scan
, &connector
->probed_modes
, head
) {
1069 if (scan
->type
& DRM_MODE_TYPE_PREFERRED
) {
1070 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1071 drm_mode_debug_printmodeline(scan
);
1073 fixed_mode
= drm_mode_duplicate(dev
, scan
);
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
;
1087 connector
->display_info
.width_mm
= fixed_mode
->width_mm
;
1088 connector
->display_info
.height_mm
= fixed_mode
->height_mm
;
1094 * If we didn't get EDID, try checking if the panel is already turned
1095 * on. If so, assume that whatever is currently programmed is the
1099 /* Ironlake: FIXME if still fail, not try pipe mode now */
1100 if (HAS_PCH_SPLIT(dev
))
1103 pipe
= (lvds
& LVDS_PIPEB_SELECT
) ? 1 : 0;
1104 crtc
= intel_get_crtc_for_pipe(dev
, pipe
);
1106 if (crtc
&& (lvds
& LVDS_PORT_EN
)) {
1107 fixed_mode
= intel_crtc_mode_get(dev
, crtc
);
1109 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1110 drm_mode_debug_printmodeline(fixed_mode
);
1111 fixed_mode
->type
|= DRM_MODE_TYPE_PREFERRED
;
1116 /* If we still don't have a mode after all that, give up. */
1121 mutex_unlock(&dev
->mode_config
.mutex
);
1123 intel_panel_init(&intel_connector
->panel
, fixed_mode
, downclock_mode
);
1124 intel_panel_setup_backlight(connector
, INVALID_PIPE
);
1126 lvds_encoder
->is_dual_link
= compute_is_dual_link_lvds(lvds_encoder
);
1127 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1128 lvds_encoder
->is_dual_link
? "dual" : "single");
1130 lvds_encoder
->a3_power
= lvds
& LVDS_A3_POWER_MASK
;
1132 lvds_connector
->lid_notifier
.notifier_call
= intel_lid_notify
;
1133 if (acpi_lid_notifier_register(&lvds_connector
->lid_notifier
)) {
1134 DRM_DEBUG_KMS("lid notifier registration failed\n");
1135 lvds_connector
->lid_notifier
.notifier_call
= NULL
;
1141 mutex_unlock(&dev
->mode_config
.mutex
);
1143 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1144 drm_connector_cleanup(connector
);
1145 drm_encoder_cleanup(encoder
);
1146 kfree(lvds_encoder
);
1147 kfree(lvds_connector
);