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 D510MO",
712 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
713 DMI_EXACT_MATCH(DMI_BOARD_NAME, "D510MO"),
717 .callback = intel_no_lvds_dmi_callback,
718 .ident = "Intel D525MW",
720 DMI_MATCH(DMI_BOARD_VENDOR, "Intel"),
721 DMI_EXACT_MATCH(DMI_BOARD_NAME, "D525MW"),
725 { } /* terminating entry */
729 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
731 * @connector: LVDS connector
733 * Find the reduced downclock for LVDS in EDID.
735 static void intel_find_lvds_downclock(struct drm_device *dev,
736 struct drm_display_mode *fixed_mode,
737 struct drm_connector *connector)
739 struct drm_i915_private *dev_priv = dev->dev_private;
740 struct drm_display_mode *scan;
743 temp_downclock = fixed_mode->clock;
744 list_for_each_entry(scan, &connector->probed_modes, head) {
746 * If one mode has the same resolution with the fixed_panel
747 * mode while they have the different refresh rate, it means
748 * that the reduced downclock is found for the LVDS. In such
749 * case we can set the different FPx0/1 to dynamically select
750 * between low and high frequency.
752 if (scan->hdisplay == fixed_mode->hdisplay &&
753 scan->hsync_start == fixed_mode->hsync_start &&
754 scan->hsync_end == fixed_mode->hsync_end &&
755 scan->htotal == fixed_mode->htotal &&
756 scan->vdisplay == fixed_mode->vdisplay &&
757 scan->vsync_start == fixed_mode->vsync_start &&
758 scan->vsync_end == fixed_mode->vsync_end &&
759 scan->vtotal == fixed_mode->vtotal) {
760 if (scan->clock < temp_downclock) {
762 * The downclock is already found. But we
763 * expect to find the lower downclock.
765 temp_downclock = scan->clock;
769 if (temp_downclock < fixed_mode->clock && i915_lvds_downclock) {
770 /* We found the downclock for LVDS. */
771 dev_priv->lvds_downclock_avail = 1;
772 dev_priv->lvds_downclock = temp_downclock;
773 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
774 "Normal clock %dKhz, downclock %dKhz\n",
775 fixed_mode->clock, temp_downclock);
780 * Enumerate the child dev array parsed from VBT to check whether
781 * the LVDS is present.
782 * If it is present, return 1.
783 * If it is not present, return false.
784 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
786 static bool lvds_is_present_in_vbt(struct drm_device *dev,
789 struct drm_i915_private *dev_priv = dev->dev_private;
792 if (!dev_priv->vbt.child_dev_num)
795 for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
796 union child_device_config *uchild = dev_priv->vbt.child_dev + i;
797 struct old_child_dev_config *child = &uchild->old;
799 /* If the device type is not LFP, continue.
800 * We have to check both the new identifiers as well as the
801 * old for compatibility with some BIOSes.
803 if (child->device_type != DEVICE_TYPE_INT_LFP &&
804 child->device_type != DEVICE_TYPE_LFP)
807 if (intel_gmbus_is_port_valid(child->i2c_pin))
808 *i2c_pin = child->i2c_pin;
810 /* However, we cannot trust the BIOS writers to populate
811 * the VBT correctly. Since LVDS requires additional
812 * information from AIM blocks, a non-zero addin offset is
813 * a good indicator that the LVDS is actually present.
815 if (child->addin_offset)
818 /* But even then some BIOS writers perform some black magic
819 * and instantiate the device without reference to any
820 * additional data. Trust that if the VBT was written into
821 * the OpRegion then they have validated the LVDS's existence.
823 if (dev_priv->opregion.vbt)
830 static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
832 DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
836 static const struct dmi_system_id intel_dual_link_lvds[] = {
838 .callback = intel_dual_link_lvds_callback,
839 .ident = "Apple MacBook Pro (Core i5/i7 Series)",
841 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
842 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
845 { } /* terminating entry */
848 bool intel_is_dual_link_lvds(struct drm_device *dev)
850 struct intel_encoder *encoder;
851 struct intel_lvds_encoder *lvds_encoder;
853 list_for_each_entry(encoder, &dev->mode_config.encoder_list,
855 if (encoder->type == INTEL_OUTPUT_LVDS) {
856 lvds_encoder = to_lvds_encoder(&encoder->base);
858 return lvds_encoder->is_dual_link;
865 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
867 struct drm_device *dev = lvds_encoder->base.base.dev;
869 struct drm_i915_private *dev_priv = dev->dev_private;
871 /* use the module option value if specified */
872 if (i915_lvds_channel_mode > 0)
873 return i915_lvds_channel_mode == 2;
875 if (dmi_check_system(intel_dual_link_lvds))
878 /* BIOS should set the proper LVDS register value at boot, but
879 * in reality, it doesn't set the value when the lid is closed;
880 * we need to check "the value to be set" in VBT when LVDS
881 * register is uninitialized.
883 val = I915_READ(lvds_encoder->reg);
884 if (!(val & ~(LVDS_PIPE_MASK | LVDS_DETECTED)))
885 val = dev_priv->vbt.bios_lvds_val;
887 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
890 static bool intel_lvds_supported(struct drm_device *dev)
892 /* With the introduction of the PCH we gained a dedicated
893 * LVDS presence pin, use it. */
894 if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
897 /* Otherwise LVDS was only attached to mobile products,
898 * except for the inglorious 830gm */
899 if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
906 * intel_lvds_init - setup LVDS connectors on this device
909 * Create the connector, register the LVDS DDC bus, and try to figure out what
910 * modes we can display on the LVDS panel (if present).
912 void intel_lvds_init(struct drm_device *dev)
914 struct drm_i915_private *dev_priv = dev->dev_private;
915 struct intel_lvds_encoder *lvds_encoder;
916 struct intel_encoder *intel_encoder;
917 struct intel_lvds_connector *lvds_connector;
918 struct intel_connector *intel_connector;
919 struct drm_connector *connector;
920 struct drm_encoder *encoder;
921 struct drm_display_mode *scan; /* *modes, *bios_mode; */
922 struct drm_display_mode *fixed_mode = NULL;
924 struct drm_crtc *crtc;
929 if (!intel_lvds_supported(dev))
932 /* Skip init on machines we know falsely report LVDS */
933 if (dmi_check_system(intel_no_lvds))
936 pin = GMBUS_PORT_PANEL;
937 if (!lvds_is_present_in_vbt(dev, &pin)) {
938 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
942 if (HAS_PCH_SPLIT(dev)) {
943 if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0)
945 if (dev_priv->vbt.edp_support) {
946 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
951 lvds_encoder = kzalloc(sizeof(*lvds_encoder), GFP_KERNEL);
955 lvds_connector = kzalloc(sizeof(*lvds_connector), GFP_KERNEL);
956 if (!lvds_connector) {
961 lvds_encoder->attached_connector = lvds_connector;
963 intel_encoder = &lvds_encoder->base;
964 encoder = &intel_encoder->base;
965 intel_connector = &lvds_connector->base;
966 connector = &intel_connector->base;
967 drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs,
968 DRM_MODE_CONNECTOR_LVDS);
970 drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs,
971 DRM_MODE_ENCODER_LVDS);
973 intel_encoder->enable = intel_enable_lvds;
974 intel_encoder->pre_enable = intel_pre_enable_lvds;
975 intel_encoder->compute_config = intel_lvds_compute_config;
976 intel_encoder->mode_set = intel_lvds_mode_set;
977 intel_encoder->disable = intel_disable_lvds;
978 intel_encoder->get_hw_state = intel_lvds_get_hw_state;
979 intel_encoder->get_config = intel_lvds_get_config;
980 intel_connector->get_hw_state = intel_connector_get_hw_state;
982 intel_connector_attach_encoder(intel_connector, intel_encoder);
983 intel_encoder->type = INTEL_OUTPUT_LVDS;
985 intel_encoder->cloneable = false;
986 if (HAS_PCH_SPLIT(dev))
987 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
988 else if (IS_GEN4(dev))
989 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
991 intel_encoder->crtc_mask = (1 << 1);
993 drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
994 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
995 connector->interlace_allowed = false;
996 connector->doublescan_allowed = false;
998 if (HAS_PCH_SPLIT(dev)) {
999 lvds_encoder->reg = PCH_LVDS;
1001 lvds_encoder->reg = LVDS;
1004 /* create the scaling mode property */
1005 drm_mode_create_scaling_mode_property(dev);
1006 drm_object_attach_property(&connector->base,
1007 dev->mode_config.scaling_mode_property,
1008 DRM_MODE_SCALE_ASPECT);
1009 intel_connector->panel.fitting_mode = DRM_MODE_SCALE_ASPECT;
1012 * 1) check for EDID on DDC
1013 * 2) check for VBT data
1014 * 3) check to see if LVDS is already on
1015 * if none of the above, no panel
1016 * 4) make sure lid is open
1017 * if closed, act like it's not there for now
1021 * Attempt to get the fixed panel mode from DDC. Assume that the
1022 * preferred mode is the right one.
1024 edid = drm_get_edid(connector, intel_gmbus_get_adapter(dev_priv, pin));
1026 if (drm_add_edid_modes(connector, edid)) {
1027 drm_mode_connector_update_edid_property(connector,
1031 edid = ERR_PTR(-EINVAL);
1034 edid = ERR_PTR(-ENOENT);
1036 lvds_connector->base.edid = edid;
1038 if (IS_ERR_OR_NULL(edid)) {
1039 /* Didn't get an EDID, so
1040 * Set wide sync ranges so we get all modes
1041 * handed to valid_mode for checking
1043 connector->display_info.min_vfreq = 0;
1044 connector->display_info.max_vfreq = 200;
1045 connector->display_info.min_hfreq = 0;
1046 connector->display_info.max_hfreq = 200;
1049 list_for_each_entry(scan, &connector->probed_modes, head) {
1050 if (scan->type & DRM_MODE_TYPE_PREFERRED) {
1051 DRM_DEBUG_KMS("using preferred mode from EDID: ");
1052 drm_mode_debug_printmodeline(scan);
1054 fixed_mode = drm_mode_duplicate(dev, scan);
1056 intel_find_lvds_downclock(dev, fixed_mode,
1063 /* Failed to get EDID, what about VBT? */
1064 if (dev_priv->vbt.lfp_lvds_vbt_mode) {
1065 DRM_DEBUG_KMS("using mode from VBT: ");
1066 drm_mode_debug_printmodeline(dev_priv->vbt.lfp_lvds_vbt_mode);
1068 fixed_mode = drm_mode_duplicate(dev, dev_priv->vbt.lfp_lvds_vbt_mode);
1070 fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
1076 * If we didn't get EDID, try checking if the panel is already turned
1077 * on. If so, assume that whatever is currently programmed is the
1081 /* Ironlake: FIXME if still fail, not try pipe mode now */
1082 if (HAS_PCH_SPLIT(dev))
1085 lvds = I915_READ(LVDS);
1086 pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0;
1087 crtc = intel_get_crtc_for_pipe(dev, pipe);
1089 if (crtc && (lvds & LVDS_PORT_EN)) {
1090 fixed_mode = intel_crtc_mode_get(dev, crtc);
1092 DRM_DEBUG_KMS("using current (BIOS) mode: ");
1093 drm_mode_debug_printmodeline(fixed_mode);
1094 fixed_mode->type |= DRM_MODE_TYPE_PREFERRED;
1099 /* If we still don't have a mode after all that, give up. */
1104 lvds_encoder->is_dual_link = compute_is_dual_link_lvds(lvds_encoder);
1105 DRM_DEBUG_KMS("detected %s-link lvds configuration\n",
1106 lvds_encoder->is_dual_link ? "dual" : "single");
1109 * Unlock registers and just
1110 * leave them unlocked
1112 if (HAS_PCH_SPLIT(dev)) {
1113 I915_WRITE(PCH_PP_CONTROL,
1114 I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
1116 I915_WRITE(PP_CONTROL,
1117 I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
1119 lvds_connector->lid_notifier.notifier_call = intel_lid_notify;
1120 if (acpi_lid_notifier_register(&lvds_connector->lid_notifier)) {
1121 DRM_DEBUG_KMS("lid notifier registration failed\n");
1122 lvds_connector->lid_notifier.notifier_call = NULL;
1124 drm_sysfs_connector_add(connector);
1126 intel_panel_init(&intel_connector->panel, fixed_mode);
1127 intel_panel_setup_backlight(connector);
1132 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
1133 drm_connector_cleanup(connector);
1134 drm_encoder_cleanup(encoder);
1136 drm_mode_destroy(dev, fixed_mode);
1137 kfree(lvds_encoder);
1138 kfree(lvds_connector);