1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
6 #include <linux/module.h>
7 #include <linux/slab.h>
8 #include <linux/uaccess.h>
9 #include <linux/debugfs.h>
10 #include <linux/component.h>
11 #include <linux/of_irq.h>
12 #include <linux/delay.h>
13 #include <drm/display/drm_dp_aux_bus.h>
18 #include "dp_parser.h"
20 #include "dp_catalog.h"
26 #include "dp_display.h"
31 #define HPD_STRING_SIZE 30
38 ISR_IRQ_HPD_PULSE_COUNT,
39 ISR_HPD_LO_GLITH_COUNT,
42 /* event thread connection state */
47 ST_DISCONNECT_PENDING,
62 #define EVENT_TIMEOUT (HZ/10) /* 100ms */
63 #define DP_EVENT_Q_MAX 8
65 #define DP_TIMEOUT_NONE 0
67 #define WAIT_FOR_RESUME_TIMEOUT_JIFFIES (HZ / 2)
75 struct dp_display_private {
82 bool core_initialized;
87 struct drm_device *drm_dev;
88 struct platform_device *pdev;
91 struct dp_usbpd *usbpd;
92 struct dp_parser *parser;
93 struct dp_power *power;
94 struct dp_catalog *catalog;
95 struct drm_dp_aux *aux;
97 struct dp_panel *panel;
99 struct dp_debug *debug;
101 struct dp_usbpd_cb usbpd_cb;
102 struct dp_display_mode dp_mode;
103 struct msm_dp dp_display;
105 /* wait for audio signaling */
106 struct completion audio_comp;
108 /* event related only access by event thread */
109 struct mutex event_mutex;
110 wait_queue_head_t event_q;
114 struct task_struct *ev_tsk;
115 struct dp_event event_list[DP_EVENT_Q_MAX];
116 spinlock_t event_lock;
120 struct dp_audio *audio;
124 phys_addr_t io_start;
125 unsigned int connector_type;
129 struct msm_dp_config {
130 const struct msm_dp_desc *descs;
134 static const struct msm_dp_config sc7180_dp_cfg = {
135 .descs = (const struct msm_dp_desc[]) {
136 [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
141 static const struct msm_dp_config sc7280_dp_cfg = {
142 .descs = (const struct msm_dp_desc[]) {
143 [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
144 [MSM_DP_CONTROLLER_1] = { .io_start = 0x0aea0000, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
149 static const struct msm_dp_config sc8180x_dp_cfg = {
150 .descs = (const struct msm_dp_desc[]) {
151 [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
152 [MSM_DP_CONTROLLER_1] = { .io_start = 0x0ae98000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
153 [MSM_DP_CONTROLLER_2] = { .io_start = 0x0ae9a000, .connector_type = DRM_MODE_CONNECTOR_eDP },
158 static const struct msm_dp_config sm8350_dp_cfg = {
159 .descs = (const struct msm_dp_desc[]) {
160 [MSM_DP_CONTROLLER_0] = { .io_start = 0x0ae90000, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
165 static const struct of_device_id dp_dt_match[] = {
166 { .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_cfg },
167 { .compatible = "qcom,sc7280-dp", .data = &sc7280_dp_cfg },
168 { .compatible = "qcom,sc7280-edp", .data = &sc7280_dp_cfg },
169 { .compatible = "qcom,sc8180x-dp", .data = &sc8180x_dp_cfg },
170 { .compatible = "qcom,sc8180x-edp", .data = &sc8180x_dp_cfg },
171 { .compatible = "qcom,sm8350-dp", .data = &sm8350_dp_cfg },
175 static struct dp_display_private *dev_get_dp_display_private(struct device *dev)
177 struct msm_dp *dp = dev_get_drvdata(dev);
179 return container_of(dp, struct dp_display_private, dp_display);
182 static int dp_add_event(struct dp_display_private *dp_priv, u32 event,
186 struct dp_event *todo;
189 spin_lock_irqsave(&dp_priv->event_lock, flag);
190 pndx = dp_priv->event_pndx + 1;
191 pndx %= DP_EVENT_Q_MAX;
192 if (pndx == dp_priv->event_gndx) {
193 pr_err("event_q is full: pndx=%d gndx=%d\n",
194 dp_priv->event_pndx, dp_priv->event_gndx);
195 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
198 todo = &dp_priv->event_list[dp_priv->event_pndx++];
199 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
200 todo->event_id = event;
203 wake_up(&dp_priv->event_q);
204 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
209 static int dp_del_event(struct dp_display_private *dp_priv, u32 event)
212 struct dp_event *todo;
215 spin_lock_irqsave(&dp_priv->event_lock, flag);
216 if (dp_priv->event_pndx == dp_priv->event_gndx) {
217 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
221 gndx = dp_priv->event_gndx;
222 while (dp_priv->event_pndx != gndx) {
223 todo = &dp_priv->event_list[gndx];
224 if (todo->event_id == event) {
225 todo->event_id = EV_NO_EVENT; /* deleted */
229 gndx %= DP_EVENT_Q_MAX;
231 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
236 void dp_display_signal_audio_start(struct msm_dp *dp_display)
238 struct dp_display_private *dp;
240 dp = container_of(dp_display, struct dp_display_private, dp_display);
242 reinit_completion(&dp->audio_comp);
245 void dp_display_signal_audio_complete(struct msm_dp *dp_display)
247 struct dp_display_private *dp;
249 dp = container_of(dp_display, struct dp_display_private, dp_display);
251 complete_all(&dp->audio_comp);
254 static int dp_hpd_event_thread_start(struct dp_display_private *dp_priv);
256 static int dp_display_bind(struct device *dev, struct device *master,
260 struct dp_display_private *dp = dev_get_dp_display_private(dev);
261 struct msm_drm_private *priv = dev_get_drvdata(master);
262 struct drm_device *drm = priv->dev;
264 dp->dp_display.drm_dev = drm;
265 priv->dp[dp->id] = &dp->dp_display;
267 rc = dp->parser->parse(dp->parser);
269 DRM_ERROR("device tree parsing failed\n");
275 dp->aux->drm_dev = drm;
276 rc = dp_aux_register(dp->aux);
278 DRM_ERROR("DRM DP AUX register failed\n");
282 rc = dp_power_client_init(dp->power);
284 DRM_ERROR("Power client create failed\n");
288 rc = dp_register_audio_driver(dev, dp->audio);
290 DRM_ERROR("Audio registration Dp failed\n");
294 rc = dp_hpd_event_thread_start(dp);
296 DRM_ERROR("Event thread create failed\n");
305 static void dp_display_unbind(struct device *dev, struct device *master,
308 struct dp_display_private *dp = dev_get_dp_display_private(dev);
309 struct msm_drm_private *priv = dev_get_drvdata(master);
311 /* disable all HPD interrupts */
312 if (dp->core_initialized)
313 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false);
315 kthread_stop(dp->ev_tsk);
317 dp_power_client_deinit(dp->power);
318 dp_aux_unregister(dp->aux);
319 priv->dp[dp->id] = NULL;
322 static const struct component_ops dp_display_comp_ops = {
323 .bind = dp_display_bind,
324 .unbind = dp_display_unbind,
327 static bool dp_display_is_ds_bridge(struct dp_panel *panel)
329 return (panel->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
330 DP_DWN_STRM_PORT_PRESENT);
333 static bool dp_display_is_sink_count_zero(struct dp_display_private *dp)
335 drm_dbg_dp(dp->drm_dev, "present=%#x sink_count=%d\n",
336 dp->panel->dpcd[DP_DOWNSTREAMPORT_PRESENT],
337 dp->link->sink_count);
338 return dp_display_is_ds_bridge(dp->panel) &&
339 (dp->link->sink_count == 0);
342 static void dp_display_send_hpd_event(struct msm_dp *dp_display)
344 struct dp_display_private *dp;
345 struct drm_connector *connector;
347 dp = container_of(dp_display, struct dp_display_private, dp_display);
349 connector = dp->dp_display.connector;
350 drm_helper_hpd_irq_event(connector->dev);
354 static int dp_display_send_hpd_notification(struct dp_display_private *dp,
357 if ((hpd && dp->dp_display.is_connected) ||
358 (!hpd && !dp->dp_display.is_connected)) {
359 drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
360 (hpd ? "on" : "off"));
364 /* reset video pattern flag on disconnect */
366 dp->panel->video_test = false;
368 dp->dp_display.is_connected = hpd;
370 drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n",
371 dp->dp_display.connector_type, hpd);
372 dp_display_send_hpd_event(&dp->dp_display);
377 static int dp_display_process_hpd_high(struct dp_display_private *dp)
382 dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
384 rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
388 dp_link_process_request(dp->link);
390 edid = dp->panel->edid;
392 dp->audio_supported = drm_detect_monitor_audio(edid);
393 dp_panel_handle_sink_request(dp->panel);
395 dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
398 * set sink to normal operation mode -- D0
401 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
403 dp_link_reset_phy_params_vx_px(dp->link);
404 rc = dp_ctrl_on_link(dp->ctrl);
406 DRM_ERROR("failed to complete DP link training\n");
410 dp_add_event(dp, EV_USER_NOTIFICATION, true, 0);
416 static void dp_display_host_phy_init(struct dp_display_private *dp)
418 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
419 dp->dp_display.connector_type, dp->core_initialized,
420 dp->phy_initialized);
422 if (!dp->phy_initialized) {
423 dp_ctrl_phy_init(dp->ctrl);
424 dp->phy_initialized = true;
428 static void dp_display_host_phy_exit(struct dp_display_private *dp)
430 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
431 dp->dp_display.connector_type, dp->core_initialized,
432 dp->phy_initialized);
434 if (dp->phy_initialized) {
435 dp_ctrl_phy_exit(dp->ctrl);
436 dp->phy_initialized = false;
440 static void dp_display_host_init(struct dp_display_private *dp)
442 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
443 dp->dp_display.connector_type, dp->core_initialized,
444 dp->phy_initialized);
446 dp_power_init(dp->power, false);
447 dp_ctrl_reset_irq_ctrl(dp->ctrl, true);
448 dp_aux_init(dp->aux);
449 dp->core_initialized = true;
452 static void dp_display_host_deinit(struct dp_display_private *dp)
454 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
455 dp->dp_display.connector_type, dp->core_initialized,
456 dp->phy_initialized);
458 dp_ctrl_reset_irq_ctrl(dp->ctrl, false);
459 dp_aux_deinit(dp->aux);
460 dp_power_deinit(dp->power);
461 dp->core_initialized = false;
464 static int dp_display_usbpd_configure_cb(struct device *dev)
466 struct dp_display_private *dp = dev_get_dp_display_private(dev);
468 dp_display_host_phy_init(dp);
470 return dp_display_process_hpd_high(dp);
473 static int dp_display_usbpd_disconnect_cb(struct device *dev)
478 static int dp_display_notify_disconnect(struct device *dev)
480 struct dp_display_private *dp = dev_get_dp_display_private(dev);
482 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
487 static void dp_display_handle_video_request(struct dp_display_private *dp)
489 if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
490 dp->panel->video_test = true;
491 dp_link_send_test_response(dp->link);
495 static int dp_display_handle_port_ststus_changed(struct dp_display_private *dp)
499 if (dp_display_is_sink_count_zero(dp)) {
500 drm_dbg_dp(dp->drm_dev, "sink count is zero, nothing to do\n");
501 if (dp->hpd_state != ST_DISCONNECTED) {
502 dp->hpd_state = ST_DISCONNECT_PENDING;
503 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
506 if (dp->hpd_state == ST_DISCONNECTED) {
507 dp->hpd_state = ST_MAINLINK_READY;
508 rc = dp_display_process_hpd_high(dp);
510 dp->hpd_state = ST_DISCONNECTED;
517 static int dp_display_handle_irq_hpd(struct dp_display_private *dp)
519 u32 sink_request = dp->link->sink_request;
521 drm_dbg_dp(dp->drm_dev, "%d\n", sink_request);
522 if (dp->hpd_state == ST_DISCONNECTED) {
523 if (sink_request & DP_LINK_STATUS_UPDATED) {
524 drm_dbg_dp(dp->drm_dev, "Disconnected sink_request: %d\n",
526 DRM_ERROR("Disconnected, no DP_LINK_STATUS_UPDATED\n");
531 dp_ctrl_handle_sink_request(dp->ctrl);
533 if (sink_request & DP_TEST_LINK_VIDEO_PATTERN)
534 dp_display_handle_video_request(dp);
539 static int dp_display_usbpd_attention_cb(struct device *dev)
543 struct dp_display_private *dp = dev_get_dp_display_private(dev);
545 /* check for any test request issued by sink */
546 rc = dp_link_process_request(dp->link);
548 sink_request = dp->link->sink_request;
549 drm_dbg_dp(dp->drm_dev, "hpd_state=%d sink_request=%d\n",
550 dp->hpd_state, sink_request);
551 if (sink_request & DS_PORT_STATUS_CHANGED)
552 rc = dp_display_handle_port_ststus_changed(dp);
554 rc = dp_display_handle_irq_hpd(dp);
560 static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
562 struct dp_usbpd *hpd = dp->usbpd;
569 mutex_lock(&dp->event_mutex);
571 state = dp->hpd_state;
572 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
573 dp->dp_display.connector_type, state);
575 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
576 mutex_unlock(&dp->event_mutex);
580 if (state == ST_MAINLINK_READY || state == ST_CONNECTED) {
581 mutex_unlock(&dp->event_mutex);
585 if (state == ST_DISCONNECT_PENDING) {
586 /* wait until ST_DISCONNECTED */
587 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 1); /* delay = 1 */
588 mutex_unlock(&dp->event_mutex);
592 ret = dp_display_usbpd_configure_cb(&dp->pdev->dev);
593 if (ret) { /* link train failed */
594 dp->hpd_state = ST_DISCONNECTED;
596 dp->hpd_state = ST_MAINLINK_READY;
599 /* enable HDP irq_hpd/replug interrupt */
600 dp_catalog_hpd_config_intr(dp->catalog,
601 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, true);
603 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
604 dp->dp_display.connector_type, state);
605 mutex_unlock(&dp->event_mutex);
607 /* uevent will complete connection part */
611 static int dp_display_enable(struct dp_display_private *dp, u32 data);
612 static int dp_display_disable(struct dp_display_private *dp, u32 data);
614 static void dp_display_handle_plugged_change(struct msm_dp *dp_display,
617 struct dp_display_private *dp;
619 dp = container_of(dp_display,
620 struct dp_display_private, dp_display);
622 /* notify audio subsystem only if sink supports audio */
623 if (dp_display->plugged_cb && dp_display->codec_dev &&
625 dp_display->plugged_cb(dp_display->codec_dev, plugged);
628 static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
630 struct dp_usbpd *hpd = dp->usbpd;
636 mutex_lock(&dp->event_mutex);
638 state = dp->hpd_state;
640 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
641 dp->dp_display.connector_type, state);
643 /* disable irq_hpd/replug interrupts */
644 dp_catalog_hpd_config_intr(dp->catalog,
645 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, false);
647 /* unplugged, no more irq_hpd handle */
648 dp_del_event(dp, EV_IRQ_HPD_INT);
650 if (state == ST_DISCONNECTED) {
651 /* triggered by irq_hdp with sink_count = 0 */
652 if (dp->link->sink_count == 0) {
653 dp_display_host_phy_exit(dp);
655 dp_display_notify_disconnect(&dp->pdev->dev);
656 mutex_unlock(&dp->event_mutex);
658 } else if (state == ST_DISCONNECT_PENDING) {
659 mutex_unlock(&dp->event_mutex);
661 } else if (state == ST_MAINLINK_READY) {
662 dp_ctrl_off_link(dp->ctrl);
663 dp_display_host_phy_exit(dp);
664 dp->hpd_state = ST_DISCONNECTED;
665 dp_display_notify_disconnect(&dp->pdev->dev);
666 mutex_unlock(&dp->event_mutex);
670 /* disable HPD plug interrupts */
671 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, false);
674 * We don't need separate work for disconnect as
675 * connect/attention interrupts are disabled
677 dp_display_notify_disconnect(&dp->pdev->dev);
679 if (state == ST_DISPLAY_OFF) {
680 dp->hpd_state = ST_DISCONNECTED;
682 dp->hpd_state = ST_DISCONNECT_PENDING;
685 /* signal the disconnect event early to ensure proper teardown */
686 dp_display_handle_plugged_change(&dp->dp_display, false);
688 /* enable HDP plug interrupt to prepare for next plugin */
689 if (!dp->dp_display.is_edp)
690 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, true);
692 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
693 dp->dp_display.connector_type, state);
695 /* uevent will complete disconnection part */
696 mutex_unlock(&dp->event_mutex);
700 static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
704 mutex_lock(&dp->event_mutex);
706 /* irq_hpd can happen at either connected or disconnected state */
707 state = dp->hpd_state;
708 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
709 dp->dp_display.connector_type, state);
711 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
712 mutex_unlock(&dp->event_mutex);
716 if (state == ST_MAINLINK_READY || state == ST_DISCONNECT_PENDING) {
717 /* wait until ST_CONNECTED */
718 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 1); /* delay = 1 */
719 mutex_unlock(&dp->event_mutex);
723 dp_display_usbpd_attention_cb(&dp->pdev->dev);
725 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
726 dp->dp_display.connector_type, state);
728 mutex_unlock(&dp->event_mutex);
733 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
735 dp_debug_put(dp->debug);
736 dp_audio_put(dp->audio);
737 dp_panel_put(dp->panel);
741 static int dp_init_sub_modules(struct dp_display_private *dp)
744 struct device *dev = &dp->pdev->dev;
745 struct dp_usbpd_cb *cb = &dp->usbpd_cb;
746 struct dp_panel_in panel_in = {
750 /* Callback APIs used for cable status change event */
751 cb->configure = dp_display_usbpd_configure_cb;
752 cb->disconnect = dp_display_usbpd_disconnect_cb;
753 cb->attention = dp_display_usbpd_attention_cb;
755 dp->usbpd = dp_hpd_get(dev, cb);
756 if (IS_ERR(dp->usbpd)) {
757 rc = PTR_ERR(dp->usbpd);
758 DRM_ERROR("failed to initialize hpd, rc = %d\n", rc);
763 dp->parser = dp_parser_get(dp->pdev);
764 if (IS_ERR(dp->parser)) {
765 rc = PTR_ERR(dp->parser);
766 DRM_ERROR("failed to initialize parser, rc = %d\n", rc);
771 dp->catalog = dp_catalog_get(dev, &dp->parser->io);
772 if (IS_ERR(dp->catalog)) {
773 rc = PTR_ERR(dp->catalog);
774 DRM_ERROR("failed to initialize catalog, rc = %d\n", rc);
779 dp->power = dp_power_get(dev, dp->parser);
780 if (IS_ERR(dp->power)) {
781 rc = PTR_ERR(dp->power);
782 DRM_ERROR("failed to initialize power, rc = %d\n", rc);
787 dp->aux = dp_aux_get(dev, dp->catalog, dp->dp_display.is_edp);
788 if (IS_ERR(dp->aux)) {
789 rc = PTR_ERR(dp->aux);
790 DRM_ERROR("failed to initialize aux, rc = %d\n", rc);
795 dp->link = dp_link_get(dev, dp->aux);
796 if (IS_ERR(dp->link)) {
797 rc = PTR_ERR(dp->link);
798 DRM_ERROR("failed to initialize link, rc = %d\n", rc);
803 panel_in.aux = dp->aux;
804 panel_in.catalog = dp->catalog;
805 panel_in.link = dp->link;
807 dp->panel = dp_panel_get(&panel_in);
808 if (IS_ERR(dp->panel)) {
809 rc = PTR_ERR(dp->panel);
810 DRM_ERROR("failed to initialize panel, rc = %d\n", rc);
815 dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
816 dp->power, dp->catalog, dp->parser);
817 if (IS_ERR(dp->ctrl)) {
818 rc = PTR_ERR(dp->ctrl);
819 DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);
824 dp->audio = dp_audio_get(dp->pdev, dp->panel, dp->catalog);
825 if (IS_ERR(dp->audio)) {
826 rc = PTR_ERR(dp->audio);
827 pr_err("failed to initialize audio, rc = %d\n", rc);
832 /* populate wide_bus_en to differernt layers */
833 dp->ctrl->wide_bus_en = dp->wide_bus_en;
834 dp->catalog->wide_bus_en = dp->wide_bus_en;
839 dp_panel_put(dp->panel);
846 static int dp_display_set_mode(struct msm_dp *dp_display,
847 struct dp_display_mode *mode)
849 struct dp_display_private *dp;
851 dp = container_of(dp_display, struct dp_display_private, dp_display);
853 dp->panel->dp_mode.drm_mode = mode->drm_mode;
854 dp->panel->dp_mode.bpp = mode->bpp;
855 dp->panel->dp_mode.capabilities = mode->capabilities;
856 dp_panel_init_panel_info(dp->panel);
860 static int dp_display_prepare(struct msm_dp *dp_display)
865 static int dp_display_enable(struct dp_display_private *dp, u32 data)
868 struct msm_dp *dp_display = &dp->dp_display;
870 drm_dbg_dp(dp->drm_dev, "sink_count=%d\n", dp->link->sink_count);
871 if (dp_display->power_on) {
872 drm_dbg_dp(dp->drm_dev, "Link already setup, return\n");
876 rc = dp_ctrl_on_stream(dp->ctrl, data);
878 dp_display->power_on = true;
883 static int dp_display_post_enable(struct msm_dp *dp_display)
885 struct dp_display_private *dp;
888 dp = container_of(dp_display, struct dp_display_private, dp_display);
890 rate = dp->link->link_params.rate;
892 if (dp->audio_supported) {
893 dp->audio->bw_code = drm_dp_link_rate_to_bw_code(rate);
894 dp->audio->lane_count = dp->link->link_params.num_lanes;
897 /* signal the connect event late to synchronize video and display */
898 dp_display_handle_plugged_change(dp_display, true);
902 static int dp_display_disable(struct dp_display_private *dp, u32 data)
904 struct msm_dp *dp_display = &dp->dp_display;
906 if (!dp_display->power_on)
909 /* wait only if audio was enabled */
910 if (dp_display->audio_enabled) {
911 /* signal the disconnect event */
912 dp_display_handle_plugged_change(dp_display, false);
913 if (!wait_for_completion_timeout(&dp->audio_comp,
915 DRM_ERROR("audio comp timeout\n");
918 dp_display->audio_enabled = false;
920 if (dp->link->sink_count == 0) {
922 * irq_hpd with sink_count = 0
923 * hdmi unplugged out of dongle
925 dp_ctrl_off_link_stream(dp->ctrl);
928 * unplugged interrupt
929 * dongle unplugged out of DUT
931 dp_ctrl_off(dp->ctrl);
932 dp_display_host_phy_exit(dp);
935 dp_display->power_on = false;
937 drm_dbg_dp(dp->drm_dev, "sink count: %d\n", dp->link->sink_count);
941 static int dp_display_unprepare(struct msm_dp *dp_display)
946 int dp_display_set_plugged_cb(struct msm_dp *dp_display,
947 hdmi_codec_plugged_cb fn, struct device *codec_dev)
951 dp_display->plugged_cb = fn;
952 dp_display->codec_dev = codec_dev;
953 plugged = dp_display->is_connected;
954 dp_display_handle_plugged_change(dp_display, plugged);
960 * dp_bridge_mode_valid - callback to determine if specified mode is valid
961 * @bridge: Pointer to drm bridge structure
962 * @info: display info
963 * @mode: Pointer to drm mode structure
964 * Returns: Validity status for specified mode
966 enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge,
967 const struct drm_display_info *info,
968 const struct drm_display_mode *mode)
970 const u32 num_components = 3, default_bpp = 24;
971 struct dp_display_private *dp_display;
972 struct dp_link_info *link_info;
973 u32 mode_rate_khz = 0, supported_rate_khz = 0, mode_bpp = 0;
975 int mode_pclk_khz = mode->clock;
977 dp = to_dp_bridge(bridge)->dp_display;
979 if (!dp || !mode_pclk_khz || !dp->connector) {
980 DRM_ERROR("invalid params\n");
985 * The eDP controller currently does not have a reliable way of
986 * enabling panel power to read sink capabilities. So, we rely
987 * on the panel driver to populate only supported modes for now.
992 if (mode->clock > DP_MAX_PIXEL_CLK_KHZ)
995 dp_display = container_of(dp, struct dp_display_private, dp_display);
996 link_info = &dp_display->panel->link_info;
998 mode_bpp = dp->connector->display_info.bpc * num_components;
1000 mode_bpp = default_bpp;
1002 mode_bpp = dp_panel_get_mode_bpp(dp_display->panel,
1003 mode_bpp, mode_pclk_khz);
1005 mode_rate_khz = mode_pclk_khz * mode_bpp;
1006 supported_rate_khz = link_info->num_lanes * link_info->rate * 8;
1008 if (mode_rate_khz > supported_rate_khz)
1014 int dp_display_get_modes(struct msm_dp *dp)
1016 struct dp_display_private *dp_display;
1019 DRM_ERROR("invalid params\n");
1023 dp_display = container_of(dp, struct dp_display_private, dp_display);
1025 return dp_panel_get_modes(dp_display->panel,
1029 bool dp_display_check_video_test(struct msm_dp *dp)
1031 struct dp_display_private *dp_display;
1033 dp_display = container_of(dp, struct dp_display_private, dp_display);
1035 return dp_display->panel->video_test;
1038 int dp_display_get_test_bpp(struct msm_dp *dp)
1040 struct dp_display_private *dp_display;
1043 DRM_ERROR("invalid params\n");
1047 dp_display = container_of(dp, struct dp_display_private, dp_display);
1049 return dp_link_bit_depth_to_bpp(
1050 dp_display->link->test_video.test_bit_depth);
1053 void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp)
1055 struct dp_display_private *dp_display;
1057 dp_display = container_of(dp, struct dp_display_private, dp_display);
1060 * if we are reading registers we need the link clocks to be on
1061 * however till DP cable is connected this will not happen as we
1062 * do not know the resolution to power up with. Hence check the
1063 * power_on status before dumping DP registers to avoid crash due
1064 * to unclocked access
1066 mutex_lock(&dp_display->event_mutex);
1068 if (!dp->power_on) {
1069 mutex_unlock(&dp_display->event_mutex);
1073 dp_catalog_snapshot(dp_display->catalog, disp_state);
1075 mutex_unlock(&dp_display->event_mutex);
1078 static void dp_display_config_hpd(struct dp_display_private *dp)
1081 dp_display_host_init(dp);
1082 dp_catalog_ctrl_hpd_config(dp->catalog);
1084 /* Enable plug and unplug interrupts only for external DisplayPort */
1085 if (!dp->dp_display.is_edp)
1086 dp_catalog_hpd_config_intr(dp->catalog,
1087 DP_DP_HPD_PLUG_INT_MASK |
1088 DP_DP_HPD_UNPLUG_INT_MASK,
1091 /* Enable interrupt first time
1092 * we are leaving dp clocks on during disconnect
1093 * and never disable interrupt
1095 enable_irq(dp->irq);
1098 static int hpd_event_thread(void *data)
1100 struct dp_display_private *dp_priv;
1102 struct dp_event *todo;
1103 int timeout_mode = 0;
1105 dp_priv = (struct dp_display_private *)data;
1109 wait_event_timeout(dp_priv->event_q,
1110 (dp_priv->event_pndx == dp_priv->event_gndx) ||
1111 kthread_should_stop(), EVENT_TIMEOUT);
1113 wait_event_interruptible(dp_priv->event_q,
1114 (dp_priv->event_pndx != dp_priv->event_gndx) ||
1115 kthread_should_stop());
1118 if (kthread_should_stop())
1121 spin_lock_irqsave(&dp_priv->event_lock, flag);
1122 todo = &dp_priv->event_list[dp_priv->event_gndx];
1124 struct dp_event *todo_next;
1126 dp_priv->event_gndx++;
1127 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1129 /* re enter delay event into q */
1130 todo_next = &dp_priv->event_list[dp_priv->event_pndx++];
1131 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
1132 todo_next->event_id = todo->event_id;
1133 todo_next->data = todo->data;
1134 todo_next->delay = todo->delay - 1;
1136 /* clean up older event */
1137 todo->event_id = EV_NO_EVENT;
1140 /* switch to timeout mode */
1142 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1146 /* timeout with no events in q */
1147 if (dp_priv->event_pndx == dp_priv->event_gndx) {
1148 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1152 dp_priv->event_gndx++;
1153 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1155 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1157 switch (todo->event_id) {
1158 case EV_HPD_INIT_SETUP:
1159 dp_display_config_hpd(dp_priv);
1161 case EV_HPD_PLUG_INT:
1162 dp_hpd_plug_handle(dp_priv, todo->data);
1164 case EV_HPD_UNPLUG_INT:
1165 dp_hpd_unplug_handle(dp_priv, todo->data);
1167 case EV_IRQ_HPD_INT:
1168 dp_irq_hpd_handle(dp_priv, todo->data);
1170 case EV_USER_NOTIFICATION:
1171 dp_display_send_hpd_notification(dp_priv,
1182 static int dp_hpd_event_thread_start(struct dp_display_private *dp_priv)
1184 /* set event q to empty */
1185 dp_priv->event_gndx = 0;
1186 dp_priv->event_pndx = 0;
1188 dp_priv->ev_tsk = kthread_run(hpd_event_thread, dp_priv, "dp_hpd_handler");
1189 if (IS_ERR(dp_priv->ev_tsk))
1190 return PTR_ERR(dp_priv->ev_tsk);
1195 static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
1197 struct dp_display_private *dp = dev_id;
1198 irqreturn_t ret = IRQ_HANDLED;
1202 DRM_ERROR("invalid data\n");
1206 hpd_isr_status = dp_catalog_hpd_get_intr_status(dp->catalog);
1208 if (hpd_isr_status & 0x0F) {
1209 drm_dbg_dp(dp->drm_dev, "type=%d isr=0x%x\n",
1210 dp->dp_display.connector_type, hpd_isr_status);
1211 /* hpd related interrupts */
1212 if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK)
1213 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
1215 if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) {
1216 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 0);
1219 if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) {
1220 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1221 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 3);
1224 if (hpd_isr_status & DP_DP_HPD_UNPLUG_INT_MASK)
1225 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1228 /* DP controller isr */
1229 dp_ctrl_isr(dp->ctrl);
1232 dp_aux_isr(dp->aux);
1237 int dp_display_request_irq(struct msm_dp *dp_display)
1240 struct dp_display_private *dp;
1243 DRM_ERROR("invalid input\n");
1247 dp = container_of(dp_display, struct dp_display_private, dp_display);
1249 dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
1251 DRM_ERROR("failed to get irq\n");
1255 rc = devm_request_irq(&dp->pdev->dev, dp->irq,
1256 dp_display_irq_handler,
1257 IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
1259 DRM_ERROR("failed to request IRQ%u: %d\n",
1263 disable_irq(dp->irq);
1268 static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pdev,
1271 const struct msm_dp_config *cfg = of_device_get_match_data(&pdev->dev);
1272 struct resource *res;
1275 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1279 for (i = 0; i < cfg->num_descs; i++) {
1280 if (cfg->descs[i].io_start == res->start) {
1282 return &cfg->descs[i];
1286 dev_err(&pdev->dev, "unknown displayport instance\n");
1290 static int dp_display_probe(struct platform_device *pdev)
1293 struct dp_display_private *dp;
1294 const struct msm_dp_desc *desc;
1296 if (!pdev || !pdev->dev.of_node) {
1297 DRM_ERROR("pdev not found\n");
1301 dp = devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
1305 desc = dp_display_get_desc(pdev, &dp->id);
1310 dp->name = "drm_dp";
1311 dp->dp_display.connector_type = desc->connector_type;
1312 dp->wide_bus_en = desc->wide_bus_en;
1313 dp->dp_display.is_edp =
1314 (dp->dp_display.connector_type == DRM_MODE_CONNECTOR_eDP);
1316 rc = dp_init_sub_modules(dp);
1318 DRM_ERROR("init sub module failed\n");
1319 return -EPROBE_DEFER;
1323 mutex_init(&dp->event_mutex);
1324 init_waitqueue_head(&dp->event_q);
1325 spin_lock_init(&dp->event_lock);
1327 /* Store DP audio handle inside DP display */
1328 dp->dp_display.dp_audio = dp->audio;
1330 init_completion(&dp->audio_comp);
1332 platform_set_drvdata(pdev, &dp->dp_display);
1334 rc = component_add(&pdev->dev, &dp_display_comp_ops);
1336 DRM_ERROR("component add failed, rc=%d\n", rc);
1337 dp_display_deinit_sub_modules(dp);
1343 static int dp_display_remove(struct platform_device *pdev)
1345 struct dp_display_private *dp = dev_get_dp_display_private(&pdev->dev);
1347 dp_display_deinit_sub_modules(dp);
1349 component_del(&pdev->dev, &dp_display_comp_ops);
1350 platform_set_drvdata(pdev, NULL);
1355 static int dp_pm_resume(struct device *dev)
1357 struct platform_device *pdev = to_platform_device(dev);
1358 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1359 struct dp_display_private *dp;
1362 dp = container_of(dp_display, struct dp_display_private, dp_display);
1364 mutex_lock(&dp->event_mutex);
1366 drm_dbg_dp(dp->drm_dev,
1367 "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1368 dp->dp_display.connector_type, dp->core_initialized,
1369 dp->phy_initialized, dp_display->power_on);
1371 /* start from disconnected state */
1372 dp->hpd_state = ST_DISCONNECTED;
1374 /* turn on dp ctrl/phy */
1375 dp_display_host_init(dp);
1377 dp_catalog_ctrl_hpd_config(dp->catalog);
1380 if (!dp->dp_display.is_edp)
1381 dp_catalog_hpd_config_intr(dp->catalog,
1382 DP_DP_HPD_PLUG_INT_MASK |
1383 DP_DP_HPD_UNPLUG_INT_MASK,
1386 if (dp_catalog_link_is_connected(dp->catalog)) {
1388 * set sink to normal operation mode -- D0
1391 dp_display_host_phy_init(dp);
1392 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
1393 sink_count = drm_dp_read_sink_count(dp->aux);
1397 dp_display_host_phy_exit(dp);
1400 dp->link->sink_count = sink_count;
1402 * can not declared display is connected unless
1403 * HDMI cable is plugged in and sink_count of
1405 * also only signal audio when disconnected
1407 if (dp->link->sink_count) {
1408 dp->dp_display.is_connected = true;
1410 dp->dp_display.is_connected = false;
1411 dp_display_handle_plugged_change(dp_display, false);
1414 drm_dbg_dp(dp->drm_dev,
1415 "After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n",
1416 dp->dp_display.connector_type, dp->link->sink_count,
1417 dp->dp_display.is_connected, dp->core_initialized,
1418 dp->phy_initialized, dp_display->power_on);
1420 mutex_unlock(&dp->event_mutex);
1425 static int dp_pm_suspend(struct device *dev)
1427 struct platform_device *pdev = to_platform_device(dev);
1428 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1429 struct dp_display_private *dp;
1431 dp = container_of(dp_display, struct dp_display_private, dp_display);
1433 mutex_lock(&dp->event_mutex);
1435 drm_dbg_dp(dp->drm_dev,
1436 "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1437 dp->dp_display.connector_type, dp->core_initialized,
1438 dp->phy_initialized, dp_display->power_on);
1440 /* mainlink enabled */
1441 if (dp_power_clk_status(dp->power, DP_CTRL_PM))
1442 dp_ctrl_off_link_stream(dp->ctrl);
1444 dp_display_host_phy_exit(dp);
1446 /* host_init will be called at pm_resume */
1447 dp_display_host_deinit(dp);
1449 dp->hpd_state = ST_SUSPENDED;
1451 drm_dbg_dp(dp->drm_dev,
1452 "After, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1453 dp->dp_display.connector_type, dp->core_initialized,
1454 dp->phy_initialized, dp_display->power_on);
1456 mutex_unlock(&dp->event_mutex);
1461 static int dp_pm_prepare(struct device *dev)
1466 static void dp_pm_complete(struct device *dev)
1471 static const struct dev_pm_ops dp_pm_ops = {
1472 .suspend = dp_pm_suspend,
1473 .resume = dp_pm_resume,
1474 .prepare = dp_pm_prepare,
1475 .complete = dp_pm_complete,
1478 static struct platform_driver dp_display_driver = {
1479 .probe = dp_display_probe,
1480 .remove = dp_display_remove,
1482 .name = "msm-dp-display",
1483 .of_match_table = dp_dt_match,
1484 .suppress_bind_attrs = true,
1489 int __init msm_dp_register(void)
1493 ret = platform_driver_register(&dp_display_driver);
1495 DRM_ERROR("Dp display driver register failed");
1500 void __exit msm_dp_unregister(void)
1502 platform_driver_unregister(&dp_display_driver);
1505 void msm_dp_irq_postinstall(struct msm_dp *dp_display)
1507 struct dp_display_private *dp;
1512 dp = container_of(dp_display, struct dp_display_private, dp_display);
1514 if (!dp_display->is_edp)
1515 dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
1518 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
1520 struct dp_display_private *dp;
1522 dp = container_of(dp_display, struct dp_display_private, dp_display);
1524 return dp->wide_bus_en;
1527 void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
1529 struct dp_display_private *dp;
1533 dp = container_of(dp_display, struct dp_display_private, dp_display);
1534 dev = &dp->pdev->dev;
1536 dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
1537 dp->link, dp->dp_display.connector,
1539 if (IS_ERR(dp->debug)) {
1540 rc = PTR_ERR(dp->debug);
1541 DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
1546 static int dp_display_get_next_bridge(struct msm_dp *dp)
1549 struct dp_display_private *dp_priv;
1550 struct device_node *aux_bus;
1553 dp_priv = container_of(dp, struct dp_display_private, dp_display);
1554 dev = &dp_priv->pdev->dev;
1555 aux_bus = of_get_child_by_name(dev->of_node, "aux-bus");
1557 if (aux_bus && dp->is_edp) {
1558 dp_display_host_init(dp_priv);
1559 dp_catalog_ctrl_hpd_config(dp_priv->catalog);
1560 dp_display_host_phy_init(dp_priv);
1561 enable_irq(dp_priv->irq);
1564 * The code below assumes that the panel will finish probing
1565 * by the time devm_of_dp_aux_populate_ep_devices() returns.
1566 * This isn't a great assumption since it will fail if the
1567 * panel driver is probed asynchronously but is the best we
1568 * can do without a bigger driver reorganization.
1570 rc = devm_of_dp_aux_populate_ep_devices(dp_priv->aux);
1571 of_node_put(aux_bus);
1574 } else if (dp->is_edp) {
1575 DRM_ERROR("eDP aux_bus not found\n");
1580 * External bridges are mandatory for eDP interfaces: one has to
1581 * provide at least an eDP panel (which gets wrapped into panel-bridge).
1583 * For DisplayPort interfaces external bridges are optional, so
1584 * silently ignore an error if one is not present (-ENODEV).
1586 rc = dp_parser_find_next_bridge(dp_priv->parser);
1587 if (!dp->is_edp && rc == -ENODEV)
1591 dp->next_bridge = dp_priv->parser->next_bridge;
1597 disable_irq(dp_priv->irq);
1598 dp_display_host_phy_exit(dp_priv);
1599 dp_display_host_deinit(dp_priv);
1604 int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
1605 struct drm_encoder *encoder)
1607 struct msm_drm_private *priv;
1608 struct dp_display_private *dp_priv;
1611 if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev))
1614 priv = dev->dev_private;
1615 dp_display->drm_dev = dev;
1617 dp_priv = container_of(dp_display, struct dp_display_private, dp_display);
1619 ret = dp_display_request_irq(dp_display);
1621 DRM_ERROR("request_irq failed, ret=%d\n", ret);
1625 dp_display->encoder = encoder;
1627 ret = dp_display_get_next_bridge(dp_display);
1631 dp_display->bridge = dp_bridge_init(dp_display, dev, encoder);
1632 if (IS_ERR(dp_display->bridge)) {
1633 ret = PTR_ERR(dp_display->bridge);
1634 DRM_DEV_ERROR(dev->dev,
1635 "failed to create dp bridge: %d\n", ret);
1636 dp_display->bridge = NULL;
1640 priv->bridges[priv->num_bridges++] = dp_display->bridge;
1642 dp_display->connector = dp_drm_connector_init(dp_display);
1643 if (IS_ERR(dp_display->connector)) {
1644 ret = PTR_ERR(dp_display->connector);
1645 DRM_DEV_ERROR(dev->dev,
1646 "failed to create dp connector: %d\n", ret);
1647 dp_display->connector = NULL;
1651 dp_priv->panel->connector = dp_display->connector;
1656 void dp_bridge_enable(struct drm_bridge *drm_bridge)
1658 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1659 struct msm_dp *dp = dp_bridge->dp_display;
1661 struct dp_display_private *dp_display;
1663 bool force_link_train = false;
1665 dp_display = container_of(dp, struct dp_display_private, dp_display);
1666 if (!dp_display->dp_mode.drm_mode.clock) {
1667 DRM_ERROR("invalid params\n");
1672 dp_hpd_plug_handle(dp_display, 0);
1674 mutex_lock(&dp_display->event_mutex);
1676 state = dp_display->hpd_state;
1677 if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) {
1678 mutex_unlock(&dp_display->event_mutex);
1682 rc = dp_display_set_mode(dp, &dp_display->dp_mode);
1684 DRM_ERROR("Failed to perform a mode set, rc=%d\n", rc);
1685 mutex_unlock(&dp_display->event_mutex);
1689 rc = dp_display_prepare(dp);
1691 DRM_ERROR("DP display prepare failed, rc=%d\n", rc);
1692 mutex_unlock(&dp_display->event_mutex);
1696 state = dp_display->hpd_state;
1698 if (state == ST_DISPLAY_OFF) {
1699 dp_display_host_phy_init(dp_display);
1700 force_link_train = true;
1703 dp_display_enable(dp_display, force_link_train);
1705 rc = dp_display_post_enable(dp);
1707 DRM_ERROR("DP display post enable failed, rc=%d\n", rc);
1708 dp_display_disable(dp_display, 0);
1709 dp_display_unprepare(dp);
1712 /* completed connection */
1713 dp_display->hpd_state = ST_CONNECTED;
1715 drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
1716 mutex_unlock(&dp_display->event_mutex);
1719 void dp_bridge_disable(struct drm_bridge *drm_bridge)
1721 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1722 struct msm_dp *dp = dp_bridge->dp_display;
1723 struct dp_display_private *dp_display;
1725 dp_display = container_of(dp, struct dp_display_private, dp_display);
1727 dp_ctrl_push_idle(dp_display->ctrl);
1730 void dp_bridge_post_disable(struct drm_bridge *drm_bridge)
1732 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1733 struct msm_dp *dp = dp_bridge->dp_display;
1736 struct dp_display_private *dp_display;
1738 dp_display = container_of(dp, struct dp_display_private, dp_display);
1741 dp_hpd_unplug_handle(dp_display, 0);
1743 mutex_lock(&dp_display->event_mutex);
1745 state = dp_display->hpd_state;
1746 if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) {
1747 mutex_unlock(&dp_display->event_mutex);
1751 dp_display_disable(dp_display, 0);
1753 rc = dp_display_unprepare(dp);
1755 DRM_ERROR("DP display unprepare failed, rc=%d\n", rc);
1757 state = dp_display->hpd_state;
1758 if (state == ST_DISCONNECT_PENDING) {
1759 /* completed disconnection */
1760 dp_display->hpd_state = ST_DISCONNECTED;
1762 dp_display->hpd_state = ST_DISPLAY_OFF;
1765 drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
1766 mutex_unlock(&dp_display->event_mutex);
1769 void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
1770 const struct drm_display_mode *mode,
1771 const struct drm_display_mode *adjusted_mode)
1773 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1774 struct msm_dp *dp = dp_bridge->dp_display;
1775 struct dp_display_private *dp_display;
1777 dp_display = container_of(dp, struct dp_display_private, dp_display);
1779 memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
1781 if (dp_display_check_video_test(dp))
1782 dp_display->dp_mode.bpp = dp_display_get_test_bpp(dp);
1783 else /* Default num_components per pixel = 3 */
1784 dp_display->dp_mode.bpp = dp->connector->display_info.bpc * 3;
1786 if (!dp_display->dp_mode.bpp)
1787 dp_display->dp_mode.bpp = 24; /* Default bpp */
1789 drm_mode_copy(&dp_display->dp_mode.drm_mode, adjusted_mode);
1791 dp_display->dp_mode.v_active_low =
1792 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NVSYNC);
1794 dp_display->dp_mode.h_active_low =
1795 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);