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 = dev->dev_private;
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 = dev->dev_private;
110 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
114 tmp = I915_READ(lvds_encoder->reg);
115 if (tmp & LVDS_HSYNC_POLARITY)
116 flags |= DRM_MODE_FLAG_NHSYNC;
118 flags |= DRM_MODE_FLAG_PHSYNC;
119 if (tmp & LVDS_VSYNC_POLARITY)
120 flags |= DRM_MODE_FLAG_NVSYNC;
122 flags |= DRM_MODE_FLAG_PVSYNC;
124 pipe_config->base.adjusted_mode.flags |= flags;
126 /* gen2/3 store dither state in pfit control, needs to match */
127 if (INTEL_INFO(dev)->gen < 4) {
128 tmp = I915_READ(PFIT_CONTROL);
130 pipe_config->gmch_pfit.control |= tmp & PANEL_8TO6_DITHER_ENABLE;
133 dotclock = pipe_config->port_clock;
135 if (HAS_PCH_SPLIT(dev_priv->dev))
136 ironlake_check_encoder_dotclock(pipe_config, dotclock);
138 pipe_config->base.adjusted_mode.crtc_clock = dotclock;
141 static void intel_pre_enable_lvds(struct intel_encoder *encoder)
143 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
144 struct drm_device *dev = encoder->base.dev;
145 struct drm_i915_private *dev_priv = dev->dev_private;
146 struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
147 const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode;
148 int pipe = crtc->pipe;
151 if (HAS_PCH_SPLIT(dev)) {
152 assert_fdi_rx_pll_disabled(dev_priv, pipe);
153 assert_shared_dpll_disabled(dev_priv,
154 intel_crtc_to_shared_dpll(crtc));
156 assert_pll_disabled(dev_priv, pipe);
159 temp = I915_READ(lvds_encoder->reg);
160 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
162 if (HAS_PCH_CPT(dev)) {
163 temp &= ~PORT_TRANS_SEL_MASK;
164 temp |= PORT_TRANS_SEL_CPT(pipe);
167 temp |= LVDS_PIPEB_SELECT;
169 temp &= ~LVDS_PIPEB_SELECT;
173 /* set the corresponsding LVDS_BORDER bit */
174 temp &= ~LVDS_BORDER_ENABLE;
175 temp |= crtc->config->gmch_pfit.lvds_border_bits;
176 /* Set the B0-B3 data pairs corresponding to whether we're going to
177 * set the DPLLs for dual-channel mode or not.
179 if (lvds_encoder->is_dual_link)
180 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
182 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
184 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
185 * appropriately here, but we need to look more thoroughly into how
186 * panels behave in the two modes. For now, let's just maintain the
187 * value we got from the BIOS.
189 temp &= ~LVDS_A3_POWER_MASK;
190 temp |= lvds_encoder->a3_power;
192 /* Set the dithering flag on LVDS as needed, note that there is no
193 * special lvds dither control bit on pch-split platforms, dithering is
194 * only controlled through the PIPECONF reg. */
195 if (INTEL_INFO(dev)->gen == 4) {
196 /* Bspec wording suggests that LVDS port dithering only exists
197 * for 18bpp panels. */
198 if (crtc->config->dither && crtc->config->pipe_bpp == 18)
199 temp |= LVDS_ENABLE_DITHER;
201 temp &= ~LVDS_ENABLE_DITHER;
203 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
204 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
205 temp |= LVDS_HSYNC_POLARITY;
206 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
207 temp |= LVDS_VSYNC_POLARITY;
209 I915_WRITE(lvds_encoder->reg, temp);
213 * Sets the power state for the panel.
215 static void intel_enable_lvds(struct intel_encoder *encoder)
217 struct drm_device *dev = encoder->base.dev;
218 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
219 struct intel_connector *intel_connector =
220 &lvds_encoder->attached_connector->base;
221 struct drm_i915_private *dev_priv = dev->dev_private;
222 i915_reg_t ctl_reg, stat_reg;
224 if (HAS_PCH_SPLIT(dev)) {
225 ctl_reg = PCH_PP_CONTROL;
226 stat_reg = PCH_PP_STATUS;
228 ctl_reg = PP_CONTROL;
229 stat_reg = PP_STATUS;
232 I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) | LVDS_PORT_EN);
234 I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON);
235 POSTING_READ(lvds_encoder->reg);
236 if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000))
237 DRM_ERROR("timed out waiting for panel to power on\n");
239 intel_panel_enable_backlight(intel_connector);
242 static void intel_disable_lvds(struct intel_encoder *encoder)
244 struct drm_device *dev = encoder->base.dev;
245 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
246 struct drm_i915_private *dev_priv = dev->dev_private;
247 i915_reg_t ctl_reg, stat_reg;
249 if (HAS_PCH_SPLIT(dev)) {
250 ctl_reg = PCH_PP_CONTROL;
251 stat_reg = PCH_PP_STATUS;
253 ctl_reg = PP_CONTROL;
254 stat_reg = PP_STATUS;
257 I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);
258 if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000))
259 DRM_ERROR("timed out waiting for panel to power off\n");
261 I915_WRITE(lvds_encoder->reg, I915_READ(lvds_encoder->reg) & ~LVDS_PORT_EN);
262 POSTING_READ(lvds_encoder->reg);
265 static void gmch_disable_lvds(struct intel_encoder *encoder)
267 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
268 struct intel_connector *intel_connector =
269 &lvds_encoder->attached_connector->base;
271 intel_panel_disable_backlight(intel_connector);
273 intel_disable_lvds(encoder);
276 static void pch_disable_lvds(struct intel_encoder *encoder)
278 struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
279 struct intel_connector *intel_connector =
280 &lvds_encoder->attached_connector->base;
282 intel_panel_disable_backlight(intel_connector);
285 static void pch_post_disable_lvds(struct intel_encoder *encoder)
287 intel_disable_lvds(encoder);
290 static enum drm_mode_status
291 intel_lvds_mode_valid(struct drm_connector *connector,
292 struct drm_display_mode *mode)
294 struct intel_connector *intel_connector = to_intel_connector(connector);
295 struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode;
296 int max_pixclk = to_i915(connector->dev)->max_dotclk_freq;
298 if (mode->hdisplay > fixed_mode->hdisplay)
300 if (mode->vdisplay > fixed_mode->vdisplay)
302 if (fixed_mode->clock > max_pixclk)
303 return MODE_CLOCK_HIGH;
308 static bool intel_lvds_compute_config(struct intel_encoder *intel_encoder,
309 struct intel_crtc_state *pipe_config)
311 struct drm_device *dev = intel_encoder->base.dev;
312 struct intel_lvds_encoder *lvds_encoder =
313 to_lvds_encoder(&intel_encoder->base);
314 struct intel_connector *intel_connector =
315 &lvds_encoder->attached_connector->base;
316 struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
317 struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
318 unsigned int lvds_bpp;
320 /* Should never happen!! */
321 if (INTEL_INFO(dev)->gen < 4 && intel_crtc->pipe == 0) {
322 DRM_ERROR("Can't support LVDS on pipe A\n");
326 if (lvds_encoder->a3_power == LVDS_A3_POWER_UP)
331 if (lvds_bpp != pipe_config->pipe_bpp && !pipe_config->bw_constrained) {
332 DRM_DEBUG_KMS("forcing display bpp (was %d) to LVDS (%d)\n",
333 pipe_config->pipe_bpp, lvds_bpp);
334 pipe_config->pipe_bpp = lvds_bpp;
338 * We have timings from the BIOS for the panel, put them in
339 * to the adjusted mode. The CRTC will be set up for this mode,
340 * with the panel scaling set up to source from the H/VDisplay
341 * of the original mode.
343 intel_fixed_panel_mode(intel_connector->panel.fixed_mode,
346 if (HAS_PCH_SPLIT(dev)) {
347 pipe_config->has_pch_encoder = true;
349 intel_pch_panel_fitting(intel_crtc, pipe_config,
350 intel_connector->panel.fitting_mode);
352 intel_gmch_panel_fitting(intel_crtc, pipe_config,
353 intel_connector->panel.fitting_mode);
358 * XXX: It would be nice to support lower refresh rates on the
359 * panels to reduce power consumption, and perhaps match the
360 * user's requested refresh rate.
367 * Detect the LVDS connection.
369 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
370 * connected and closed means disconnected. We also send hotplug events as
371 * needed, using lid status notification from the input layer.
373 static enum drm_connector_status
374 intel_lvds_detect(struct drm_connector *connector, bool force)
376 struct drm_device *dev = connector->dev;
377 enum drm_connector_status status;
379 DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
380 connector->base.id, connector->name);
382 status = intel_panel_detect(dev);
383 if (status != connector_status_unknown)
386 return connector_status_connected;
390 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
392 static int intel_lvds_get_modes(struct drm_connector *connector)
394 struct intel_lvds_connector *lvds_connector = to_lvds_connector(connector);
395 struct drm_device *dev = connector->dev;
396 struct drm_display_mode *mode;
398 /* use cached edid if we have one */
399 if (!IS_ERR_OR_NULL(lvds_connector->base.edid))
400 return drm_add_edid_modes(connector, lvds_connector->base.edid);
402 mode = drm_mode_duplicate(dev, lvds_connector->base.panel.fixed_mode);
406 drm_mode_probed_add(connector, mode);
410 static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id *id)
412 DRM_INFO("Skipping forced modeset for %s\n", id->ident);
416 /* The GPU hangs up on these systems if modeset is performed on LID open */
417 static const struct dmi_system_id intel_no_modeset_on_lid[] = {
419 .callback = intel_no_modeset_on_lid_dmi_callback,
420 .ident = "Toshiba Tecra A11",
422 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
423 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A11"),
427 { } /* terminating entry */
431 * Lid events. Note the use of 'modeset':
432 * - we set it to MODESET_ON_LID_OPEN on lid close,
433 * and set it to MODESET_DONE on open
434 * - we use it as a "only once" bit (ie we ignore
435 * duplicate events where it was already properly set)
436 * - the suspend/resume paths will set it to
437 * MODESET_SUSPENDED and ignore the lid open event,
438 * because they restore the mode ("lid open").
440 static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
443 struct intel_lvds_connector *lvds_connector =
444 container_of(nb, struct intel_lvds_connector, lid_notifier);
445 struct drm_connector *connector = &lvds_connector->base.base;
446 struct drm_device *dev = connector->dev;
447 struct drm_i915_private *dev_priv = dev->dev_private;
449 if (dev->switch_power_state != DRM_SWITCH_POWER_ON)
452 mutex_lock(&dev_priv->modeset_restore_lock);
453 if (dev_priv->modeset_restore == MODESET_SUSPENDED)
456 * check and update the status of LVDS connector after receiving
457 * the LID nofication event.
459 connector->status = connector->funcs->detect(connector, false);
461 /* Don't force modeset on machines where it causes a GPU lockup */
462 if (dmi_check_system(intel_no_modeset_on_lid))
464 if (!acpi_lid_open()) {
465 /* do modeset on next lid open event */
466 dev_priv->modeset_restore = MODESET_ON_LID_OPEN;
470 if (dev_priv->modeset_restore == MODESET_DONE)
474 * Some old platform's BIOS love to wreak havoc while the lid is closed.
475 * We try to detect this here and undo any damage. The split for PCH
476 * platforms is rather conservative and a bit arbitrary expect that on
477 * those platforms VGA disabling requires actual legacy VGA I/O access,
478 * and as part of the cleanup in the hw state restore we also redisable
481 if (!HAS_PCH_SPLIT(dev))
482 intel_display_resume(dev);
484 dev_priv->modeset_restore = MODESET_DONE;
487 mutex_unlock(&dev_priv->modeset_restore_lock);
492 * intel_lvds_destroy - unregister and free LVDS structures
493 * @connector: connector to free
495 * Unregister the DDC bus for this connector then free the driver private
498 static void intel_lvds_destroy(struct drm_connector *connector)
500 struct intel_lvds_connector *lvds_connector =
501 to_lvds_connector(connector);
503 if (lvds_connector->lid_notifier.notifier_call)
504 acpi_lid_notifier_unregister(&lvds_connector->lid_notifier);
506 if (!IS_ERR_OR_NULL(lvds_connector->base.edid))
507 kfree(lvds_connector->base.edid);
509 intel_panel_fini(&lvds_connector->base.panel);
511 drm_connector_cleanup(connector);
515 static int intel_lvds_set_property(struct drm_connector *connector,
516 struct drm_property *property,
519 struct intel_connector *intel_connector = to_intel_connector(connector);
520 struct drm_device *dev = connector->dev;
522 if (property == dev->mode_config.scaling_mode_property) {
523 struct drm_crtc *crtc;
525 if (value == DRM_MODE_SCALE_NONE) {
526 DRM_DEBUG_KMS("no scaling not supported\n");
530 if (intel_connector->panel.fitting_mode == value) {
531 /* the LVDS scaling property is not changed */
534 intel_connector->panel.fitting_mode = value;
536 crtc = intel_attached_encoder(connector)->base.crtc;
537 if (crtc && crtc->state->enable) {
539 * If the CRTC is enabled, the display will be changed
540 * according to the new panel fitting mode.
542 intel_crtc_restore_mode(crtc);
549 static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = {
550 .get_modes = intel_lvds_get_modes,
551 .mode_valid = intel_lvds_mode_valid,
552 .best_encoder = intel_best_encoder,
555 static const struct drm_connector_funcs intel_lvds_connector_funcs = {
556 .dpms = drm_atomic_helper_connector_dpms,
557 .detect = intel_lvds_detect,
558 .fill_modes = drm_helper_probe_single_connector_modes,
559 .set_property = intel_lvds_set_property,
560 .atomic_get_property = intel_connector_atomic_get_property,
561 .destroy = intel_lvds_destroy,
562 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
563 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
566 static const struct drm_encoder_funcs intel_lvds_enc_funcs = {
567 .destroy = intel_encoder_destroy,
570 static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
572 DRM_INFO("Skipping LVDS initialization for %s\n", id->ident);
576 /* These systems claim to have LVDS, but really don't */
577 static const struct dmi_system_id intel_no_lvds[] = {
579 .callback = intel_no_lvds_dmi_callback,
580 .ident = "Apple Mac Mini (Core series)",
582 DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
583 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
587 .callback = intel_no_lvds_dmi_callback,
588 .ident = "Apple Mac Mini (Core 2 series)",
590 DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
591 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"),
595 .callback = intel_no_lvds_dmi_callback,
596 .ident = "MSI IM-945GSE-A",
598 DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
599 DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"),
603 .callback = intel_no_lvds_dmi_callback,
604 .ident = "Dell Studio Hybrid",
606 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
607 DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"),
611 .callback = intel_no_lvds_dmi_callback,
612 .ident = "Dell OptiPlex FX170",
614 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
615 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170"),
619 .callback = intel_no_lvds_dmi_callback,
620 .ident = "AOpen Mini PC",
622 DMI_MATCH(DMI_SYS_VENDOR, "AOpen"),
623 DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"),
627 .callback = intel_no_lvds_dmi_callback,
628 .ident = "AOpen Mini PC MP915",
630 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
631 DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"),
635 .callback = intel_no_lvds_dmi_callback,
636 .ident = "AOpen i915GMm-HFS",
638 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
639 DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
643 .callback = intel_no_lvds_dmi_callback,
644 .ident = "AOpen i45GMx-I",
646 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
647 DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I"),
651 .callback = intel_no_lvds_dmi_callback,
652 .ident = "Aopen i945GTt-VFA",
654 DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"),
658 .callback = intel_no_lvds_dmi_callback,
659 .ident = "Clientron U800",
661 DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
662 DMI_MATCH(DMI_PRODUCT_NAME, "U800"),
666 .callback = intel_no_lvds_dmi_callback,
667 .ident = "Clientron E830",
669 DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
670 DMI_MATCH(DMI_PRODUCT_NAME, "E830"),
674 .callback = intel_no_lvds_dmi_callback,
675 .ident = "Asus EeeBox PC EB1007",
677 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
678 DMI_MATCH(DMI_PRODUCT_NAME, "EB1007"),
682 .callback = intel_no_lvds_dmi_callback,
683 .ident = "Asus AT5NM10T-I",
685 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
686 DMI_MATCH(DMI_BOARD_NAME, "AT5NM10T-I"),
690 .callback = intel_no_lvds_dmi_callback,
691 .ident = "Hewlett-Packard HP t5740",
693 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
694 DMI_MATCH(DMI_PRODUCT_NAME, " t5740"),
698 .callback = intel_no_lvds_dmi_callback,
699 .ident = "Hewlett-Packard t5745",
701 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
702 DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745"),
706 .callback = intel_no_lvds_dmi_callback,
707 .ident = "Hewlett-Packard st5747",
709 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
710 DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747"),
714 .callback = intel_no_lvds_dmi_callback,
715 .ident = "MSI Wind Box DC500",
717 DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
718 DMI_MATCH(DMI_BOARD_NAME, "MS-7469"),
722 .callback = intel_no_lvds_dmi_callback,
723 .ident = "Gigabyte GA-D525TUD",
725 DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."),
726 DMI_MATCH(DMI_BOARD_NAME, "D525TUD"),
730 .callback = intel_no_lvds_dmi_callback,
731 .ident = "Supermicro X7SPA-H",
733 DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
734 DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H"),
738 .callback = intel_no_lvds_dmi_callback,
739 .ident = "Fujitsu Esprimo Q900",
741 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
742 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Q900"),
746 .callback = intel_no_lvds_dmi_callback,
747 .ident = "Intel D410PT",
749 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
750 DMI_MATCH(DMI_BOARD_NAME, "D410PT"),
754 .callback = intel_no_lvds_dmi_callback,
755 .ident = "Intel D425KT",
757 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
758 DMI_EXACT_MATCH(DMI_BOARD_NAME, "D425KT"),
762 .callback = intel_no_lvds_dmi_callback,
763 .ident = "Intel D510MO",
765 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
766 DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"),
770 .callback = intel_no_lvds_dmi_callback,
771 .ident = "Intel D525MW",
773 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
774 DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW"),
778 { } /* terminating entry */
782 * Enumerate the child dev array parsed from VBT to check whether
783 * the LVDS is present.
784 * If it is present, return 1.
785 * If it is not present, return false.
786 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
788 static bool lvds_is_present_in_vbt(struct drm_device *dev,
791 struct drm_i915_private *dev_priv = dev->dev_private;
794 if (!dev_priv->vbt.child_dev_num)
797 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
798 union child_device_config *uchild = dev_priv->vbt.child_dev + i;
799 struct old_child_dev_config *child = &uchild->old;
801 /* If the device type is not LFP, continue.
802 * We have to check both the new identifiers as well as the
803 * old for compatibility with some BIOSes.
805 if (child->device_type != DEVICE_TYPE_INT_LFP &&
806 child->device_type != DEVICE_TYPE_LFP)
809 if (intel_gmbus_is_valid_pin(dev_priv, child->i2c_pin))
810 *i2c_pin = child->i2c_pin;
812 /* However, we cannot trust the BIOS writers to populate
813 * the VBT correctly. Since LVDS requires additional
814 * information from AIM blocks, a non-zero addin offset is
815 * a good indicator that the LVDS is actually present.
817 if (child->addin_offset)
820 /* But even then some BIOS writers perform some black magic
821 * and instantiate the device without reference to any
822 * additional data. Trust that if the VBT was written into
823 * the OpRegion then they have validated the LVDS's existence.
825 if (dev_priv->opregion.vbt)
832 static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
834 DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
838 static const struct dmi_system_id intel_dual_link_lvds[] = {
840 .callback = intel_dual_link_lvds_callback,
841 .ident = "Apple MacBook Pro 15\" (2010)",
843 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
844 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6,2"),
848 .callback = intel_dual_link_lvds_callback,
849 .ident = "Apple MacBook Pro 15\" (2011)",
851 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
852 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
856 .callback = intel_dual_link_lvds_callback,
857 .ident = "Apple MacBook Pro 15\" (2012)",
859 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
860 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,1"),
863 { } /* terminating entry */
866 bool intel_is_dual_link_lvds(struct drm_device *dev)
868 struct intel_encoder *encoder;
869 struct intel_lvds_encoder *lvds_encoder;
871 for_each_intel_encoder(dev, encoder) {
872 if (encoder->type == INTEL_OUTPUT_LVDS) {
873 lvds_encoder = to_lvds_encoder(&encoder->base);
875 return lvds_encoder->is_dual_link;
882 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
884 struct drm_device *dev = lvds_encoder->base.base.dev;
886 struct drm_i915_private *dev_priv = dev->dev_private;
888 /* use the module option value if specified */
889 if (i915.lvds_channel_mode > 0)
890 return i915.lvds_channel_mode == 2;
892 /* single channel LVDS is limited to 112 MHz */
893 if (lvds_encoder->attached_connector->base.panel.fixed_mode->clock
897 if (dmi_check_system(intel_dual_link_lvds))
900 /* BIOS should set the proper LVDS register value at boot, but
901 * in reality, it doesn't set the value when the lid is closed;
902 * we need to check "the value to be set" in VBT when LVDS
903 * register is uninitialized.
905 val = I915_READ(lvds_encoder->reg);
906 if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED)))
907 val = dev_priv->vbt.bios_lvds_val;
909 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
912 static bool intel_lvds_supported(struct drm_device *dev)
914 /* With the introduction of the PCH we gained a dedicated
915 * LVDS presence pin, use it. */
916 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
919 /* Otherwise LVDS was only attached to mobile products,
920 * except for the inglorious 830gm */
921 if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
928 * intel_lvds_init - setup LVDS connectors on this device
931 * Create the connector, register the LVDS DDC bus, and try to figure out what
932 * modes we can display on the LVDS panel (if present).
934 void intel_lvds_init(struct drm_device *dev)
936 struct drm_i915_private *dev_priv = dev->dev_private;
937 struct intel_lvds_encoder *lvds_encoder;
938 struct intel_encoder *intel_encoder;
939 struct intel_lvds_connector *lvds_connector;
940 struct intel_connector *intel_connector;
941 struct drm_connector *connector;
942 struct drm_encoder *encoder;
943 struct drm_display_mode *scan; /* *modes, *bios_mode; */
944 struct drm_display_mode *fixed_mode = NULL;
945 struct drm_display_mode *downclock_mode = NULL;
947 struct drm_crtc *crtc;
954 * Unlock registers and just leave them unlocked. Do this before
955 * checking quirk lists to avoid bogus WARNINGs.
957 if (HAS_PCH_SPLIT(dev)) {
958 I915_WRITE(PCH_PP_CONTROL,
959 I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
960 } else if (INTEL_INFO(dev_priv)->gen < 5) {
961 I915_WRITE(PP_CONTROL,
962 I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
964 if (!intel_lvds_supported(dev))
967 /* Skip init on machines we know falsely report LVDS */
968 if (dmi_check_system(intel_no_lvds))
971 if (HAS_PCH_SPLIT(dev))
976 lvds = I915_READ(lvds_reg);
978 if (HAS_PCH_SPLIT(dev)) {
979 if ((lvds & LVDS_DETECTED) == 0)
981 if (dev_priv->vbt.edp_support) {
982 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
987 pin = GMBUS_PIN_PANEL;
988 if (!lvds_is_present_in_vbt(dev, &pin)) {
989 if ((lvds & LVDS_PORT_EN) == 0) {
990 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
993 DRM_DEBUG_KMS("LVDS is not present in VBT, but enabled anyway\n");
996 /* Set the Panel Power On/Off timings if uninitialized. */
997 if (INTEL_INFO(dev_priv)->gen < 5 &&
998 I915_READ(PP_ON_DELAYS) == 0 && I915_READ(PP_OFF_DELAYS) == 0) {
999 /* Set T2 to 40ms and T5 to 200ms */
1000 I915_WRITE(PP_ON_DELAYS, 0x019007d0);
1002 /* Set T3 to 35ms and Tx to 200ms */
1003 I915_WRITE(PP_OFF_DELAYS, 0x015e07d0);
1005 DRM_DEBUG_KMS("Panel power timings uninitialized, setting defaults\n");
1008 lvds_encoder = kzalloc(sizeof(*lvds_encoder), GFP_KERNEL);
1012 lvds_connector = kzalloc(sizeof(*lvds_connector), GFP_KERNEL);
1013 if (!lvds_connector) {
1014 kfree(lvds_encoder);
1018 if (intel_connector_init(&lvds_connector->base) < 0) {
1019 kfree(lvds_connector);
1020 kfree(lvds_encoder);
1024 lvds_encoder->attached_connector = lvds_connector;
1026 intel_encoder = &lvds_encoder->base;
1027 encoder = &intel_encoder->base;
1028 intel_connector = &lvds_connector->base;
1029 connector = &intel_connector->base;
1030 drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs,
1031 DRM_MODE_CONNECTOR_LVDS);
1033 drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs,
1034 DRM_MODE_ENCODER_LVDS, NULL);
1036 intel_encoder->enable = intel_enable_lvds;
1037 intel_encoder->pre_enable = intel_pre_enable_lvds;
1038 intel_encoder->compute_config = intel_lvds_compute_config;
1039 if (HAS_PCH_SPLIT(dev_priv)) {
1040 intel_encoder->disable = pch_disable_lvds;
1041 intel_encoder->post_disable = pch_post_disable_lvds;
1043 intel_encoder->disable = gmch_disable_lvds;
1045 intel_encoder->get_hw_state = intel_lvds_get_hw_state;
1046 intel_encoder->get_config = intel_lvds_get_config;
1047 intel_connector->get_hw_state = intel_connector_get_hw_state;
1048 intel_connector->unregister = intel_connector_unregister;
1050 intel_connector_attach_encoder(intel_connector, intel_encoder);
1051 intel_encoder->type = INTEL_OUTPUT_LVDS;
1053 intel_encoder->cloneable = 0;
1054 if (HAS_PCH_SPLIT(dev))
1055 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
1056 else if (IS_GEN4(dev))
1057 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
1059 intel_encoder->crtc_mask = (1 << 1);
1061 drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
1062 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1063 connector->interlace_allowed = false;
1064 connector->doublescan_allowed = false;
1066 lvds_encoder->reg = lvds_reg;
1068 /* create the scaling mode property */
1069 drm_mode_create_scaling_mode_property(dev);
1070 drm_object_attach_property(&connector->base,
1071 dev->mode_config.scaling_mode_property,
1072 DRM_MODE_SCALE_ASPECT);
1073 intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT;
1076 * 1) check for EDID on DDC
1077 * 2) check for VBT data
1078 * 3) check to see if LVDS is already on
1079 * if none of the above, no panel
1080 * 4) make sure lid is open
1081 * if closed, act like it's not there for now
1085 * Attempt to get the fixed panel mode from DDC. Assume that the
1086 * preferred mode is the right one.
1088 mutex_lock(&dev->mode_config.mutex);
1089 if (vga_switcheroo_handler_flags() & VGA_SWITCHEROO_CAN_SWITCH_DDC)
1090 edid = drm_get_edid_switcheroo(connector,
1091 intel_gmbus_get_adapter(dev_priv, pin));
1093 edid = drm_get_edid(connector,
1094 intel_gmbus_get_adapter(dev_priv, pin));
1096 if (drm_add_edid_modes(connector, edid)) {
1097 drm_mode_connector_update_edid_property(connector,
1101 edid = ERR_PTR(-EINVAL);
1104 edid = ERR_PTR(-ENOENT);
1106 lvds_connector->base.edid = edid;
1108 if (IS_ERR_OR_NULL(edid)) {
1109 /* Didn't get an EDID, so
1110 * Set wide sync ranges so we get all modes
1111 * handed to valid_mode for checking
1113 connector->display_info.min_vfreq = 0;
1114 connector->display_info.max_vfreq = 200;
1115 connector->display_info.min_hfreq = 0;
1116 connector->display_info.max_hfreq = 200;
1119 list_for_each_entry(scan, &connector->probed_modes, head) {
1120 if (scan->type & DRM_MODE_TYPE_PREFERRED) {
1121 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1122 drm_mode_debug_printmodeline(scan);
1124 fixed_mode = drm_mode_duplicate(dev, scan);
1130 /* Failed to get EDID, what about VBT? */
1131 if (dev_priv->vbt.lfp_lvds_vbt_mode) {
1132 DRM_DEBUG_KMS("using mode from VBT: ");
1133 drm_mode_debug_printmodeline(dev_priv->vbt.lfp_lvds_vbt_mode);
1135 fixed_mode = drm_mode_duplicate(dev, dev_priv->vbt.lfp_lvds_vbt_mode);
1137 fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
1143 * If we didn't get EDID, try checking if the panel is already turned
1144 * on. If so, assume that whatever is currently programmed is the
1148 /* Ironlake: FIXME if still fail, not try pipe mode now */
1149 if (HAS_PCH_SPLIT(dev))
1152 pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0;
1153 crtc = intel_get_crtc_for_pipe(dev, pipe);
1155 if (crtc && (lvds & LVDS_PORT_EN)) {
1156 fixed_mode = intel_crtc_mode_get(dev, crtc);
1158 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1159 drm_mode_debug_printmodeline(fixed_mode);
1160 fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
1165 /* If we still don't have a mode after all that, give up. */
1170 mutex_unlock(&dev->mode_config.mutex);
1172 intel_panel_init(&intel_connector->panel, fixed_mode, downclock_mode);
1174 lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder);
1175 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1176 lvds_encoder->is_dual_link ? "dual" : "single");
1178 lvds_encoder->a3_power = lvds & LVDS_A3_POWER_MASK;
1180 lvds_connector->lid_notifier.notifier_call = intel_lid_notify;
1181 if (acpi_lid_notifier_register(&lvds_connector->lid_notifier)) {
1182 DRM_DEBUG_KMS("lid notifier registration failed\n");
1183 lvds_connector->lid_notifier.notifier_call = NULL;
1185 drm_connector_register(connector);
1187 intel_panel_setup_backlight(connector, INVALID_PIPE);
1192 mutex_unlock(&dev->mode_config.mutex);
1194 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1195 drm_connector_cleanup(connector);
1196 drm_encoder_cleanup(encoder);
1197 kfree(lvds_encoder);
1198 kfree(lvds_connector);