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);
320 dp->aux->drm_dev = NULL;
321 priv->dp[dp->id] = NULL;
324 static const struct component_ops dp_display_comp_ops = {
325 .bind = dp_display_bind,
326 .unbind = dp_display_unbind,
329 static bool dp_display_is_ds_bridge(struct dp_panel *panel)
331 return (panel->dpcd[DP_DOWNSTREAMPORT_PRESENT] &
332 DP_DWN_STRM_PORT_PRESENT);
335 static bool dp_display_is_sink_count_zero(struct dp_display_private *dp)
337 drm_dbg_dp(dp->drm_dev, "present=%#x sink_count=%d\n",
338 dp->panel->dpcd[DP_DOWNSTREAMPORT_PRESENT],
339 dp->link->sink_count);
340 return dp_display_is_ds_bridge(dp->panel) &&
341 (dp->link->sink_count == 0);
344 static void dp_display_send_hpd_event(struct msm_dp *dp_display)
346 struct dp_display_private *dp;
347 struct drm_connector *connector;
349 dp = container_of(dp_display, struct dp_display_private, dp_display);
351 connector = dp->dp_display.connector;
352 drm_helper_hpd_irq_event(connector->dev);
356 static int dp_display_send_hpd_notification(struct dp_display_private *dp,
359 if ((hpd && dp->dp_display.is_connected) ||
360 (!hpd && !dp->dp_display.is_connected)) {
361 drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
362 (hpd ? "on" : "off"));
366 /* reset video pattern flag on disconnect */
368 dp->panel->video_test = false;
370 dp->dp_display.is_connected = hpd;
372 drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n",
373 dp->dp_display.connector_type, hpd);
374 dp_display_send_hpd_event(&dp->dp_display);
379 static int dp_display_process_hpd_high(struct dp_display_private *dp)
384 dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
386 rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
390 dp_link_process_request(dp->link);
392 edid = dp->panel->edid;
394 dp->audio_supported = drm_detect_monitor_audio(edid);
395 dp_panel_handle_sink_request(dp->panel);
397 dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
400 * set sink to normal operation mode -- D0
403 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
405 dp_link_reset_phy_params_vx_px(dp->link);
406 rc = dp_ctrl_on_link(dp->ctrl);
408 DRM_ERROR("failed to complete DP link training\n");
412 dp_add_event(dp, EV_USER_NOTIFICATION, true, 0);
418 static void dp_display_host_phy_init(struct dp_display_private *dp)
420 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
421 dp->dp_display.connector_type, dp->core_initialized,
422 dp->phy_initialized);
424 if (!dp->phy_initialized) {
425 dp_ctrl_phy_init(dp->ctrl);
426 dp->phy_initialized = true;
430 static void dp_display_host_phy_exit(struct dp_display_private *dp)
432 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
433 dp->dp_display.connector_type, dp->core_initialized,
434 dp->phy_initialized);
436 if (dp->phy_initialized) {
437 dp_ctrl_phy_exit(dp->ctrl);
438 dp->phy_initialized = false;
442 static void dp_display_host_init(struct dp_display_private *dp)
444 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
445 dp->dp_display.connector_type, dp->core_initialized,
446 dp->phy_initialized);
448 dp_power_init(dp->power, false);
449 dp_ctrl_reset_irq_ctrl(dp->ctrl, true);
450 dp_aux_init(dp->aux);
451 dp->core_initialized = true;
454 static void dp_display_host_deinit(struct dp_display_private *dp)
456 drm_dbg_dp(dp->drm_dev, "type=%d core_init=%d phy_init=%d\n",
457 dp->dp_display.connector_type, dp->core_initialized,
458 dp->phy_initialized);
460 dp_ctrl_reset_irq_ctrl(dp->ctrl, false);
461 dp_aux_deinit(dp->aux);
462 dp_power_deinit(dp->power);
463 dp->core_initialized = false;
466 static int dp_display_usbpd_configure_cb(struct device *dev)
468 struct dp_display_private *dp = dev_get_dp_display_private(dev);
470 dp_display_host_phy_init(dp);
472 return dp_display_process_hpd_high(dp);
475 static int dp_display_usbpd_disconnect_cb(struct device *dev)
480 static int dp_display_notify_disconnect(struct device *dev)
482 struct dp_display_private *dp = dev_get_dp_display_private(dev);
484 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
489 static void dp_display_handle_video_request(struct dp_display_private *dp)
491 if (dp->link->sink_request & DP_TEST_LINK_VIDEO_PATTERN) {
492 dp->panel->video_test = true;
493 dp_link_send_test_response(dp->link);
497 static int dp_display_handle_port_ststus_changed(struct dp_display_private *dp)
501 if (dp_display_is_sink_count_zero(dp)) {
502 drm_dbg_dp(dp->drm_dev, "sink count is zero, nothing to do\n");
503 if (dp->hpd_state != ST_DISCONNECTED) {
504 dp->hpd_state = ST_DISCONNECT_PENDING;
505 dp_add_event(dp, EV_USER_NOTIFICATION, false, 0);
508 if (dp->hpd_state == ST_DISCONNECTED) {
509 dp->hpd_state = ST_MAINLINK_READY;
510 rc = dp_display_process_hpd_high(dp);
512 dp->hpd_state = ST_DISCONNECTED;
519 static int dp_display_handle_irq_hpd(struct dp_display_private *dp)
521 u32 sink_request = dp->link->sink_request;
523 drm_dbg_dp(dp->drm_dev, "%d\n", sink_request);
524 if (dp->hpd_state == ST_DISCONNECTED) {
525 if (sink_request & DP_LINK_STATUS_UPDATED) {
526 drm_dbg_dp(dp->drm_dev, "Disconnected sink_request: %d\n",
528 DRM_ERROR("Disconnected, no DP_LINK_STATUS_UPDATED\n");
533 dp_ctrl_handle_sink_request(dp->ctrl);
535 if (sink_request & DP_TEST_LINK_VIDEO_PATTERN)
536 dp_display_handle_video_request(dp);
541 static int dp_display_usbpd_attention_cb(struct device *dev)
545 struct dp_display_private *dp = dev_get_dp_display_private(dev);
547 /* check for any test request issued by sink */
548 rc = dp_link_process_request(dp->link);
550 sink_request = dp->link->sink_request;
551 drm_dbg_dp(dp->drm_dev, "hpd_state=%d sink_request=%d\n",
552 dp->hpd_state, sink_request);
553 if (sink_request & DS_PORT_STATUS_CHANGED)
554 rc = dp_display_handle_port_ststus_changed(dp);
556 rc = dp_display_handle_irq_hpd(dp);
562 static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
564 struct dp_usbpd *hpd = dp->usbpd;
571 mutex_lock(&dp->event_mutex);
573 state = dp->hpd_state;
574 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
575 dp->dp_display.connector_type, state);
577 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
578 mutex_unlock(&dp->event_mutex);
582 if (state == ST_MAINLINK_READY || state == ST_CONNECTED) {
583 mutex_unlock(&dp->event_mutex);
587 if (state == ST_DISCONNECT_PENDING) {
588 /* wait until ST_DISCONNECTED */
589 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 1); /* delay = 1 */
590 mutex_unlock(&dp->event_mutex);
594 ret = dp_display_usbpd_configure_cb(&dp->pdev->dev);
595 if (ret) { /* link train failed */
596 dp->hpd_state = ST_DISCONNECTED;
598 dp->hpd_state = ST_MAINLINK_READY;
601 /* enable HDP irq_hpd/replug interrupt */
602 dp_catalog_hpd_config_intr(dp->catalog,
603 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, true);
605 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
606 dp->dp_display.connector_type, state);
607 mutex_unlock(&dp->event_mutex);
609 /* uevent will complete connection part */
613 static int dp_display_enable(struct dp_display_private *dp, u32 data);
614 static int dp_display_disable(struct dp_display_private *dp, u32 data);
616 static void dp_display_handle_plugged_change(struct msm_dp *dp_display,
619 struct dp_display_private *dp;
621 dp = container_of(dp_display,
622 struct dp_display_private, dp_display);
624 /* notify audio subsystem only if sink supports audio */
625 if (dp_display->plugged_cb && dp_display->codec_dev &&
627 dp_display->plugged_cb(dp_display->codec_dev, plugged);
630 static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
632 struct dp_usbpd *hpd = dp->usbpd;
638 mutex_lock(&dp->event_mutex);
640 state = dp->hpd_state;
642 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
643 dp->dp_display.connector_type, state);
645 /* disable irq_hpd/replug interrupts */
646 dp_catalog_hpd_config_intr(dp->catalog,
647 DP_DP_IRQ_HPD_INT_MASK | DP_DP_HPD_REPLUG_INT_MASK, false);
649 /* unplugged, no more irq_hpd handle */
650 dp_del_event(dp, EV_IRQ_HPD_INT);
652 if (state == ST_DISCONNECTED) {
653 /* triggered by irq_hdp with sink_count = 0 */
654 if (dp->link->sink_count == 0) {
655 dp_display_host_phy_exit(dp);
657 dp_display_notify_disconnect(&dp->pdev->dev);
658 mutex_unlock(&dp->event_mutex);
660 } else if (state == ST_DISCONNECT_PENDING) {
661 mutex_unlock(&dp->event_mutex);
663 } else if (state == ST_MAINLINK_READY) {
664 dp_ctrl_off_link(dp->ctrl);
665 dp_display_host_phy_exit(dp);
666 dp->hpd_state = ST_DISCONNECTED;
667 dp_display_notify_disconnect(&dp->pdev->dev);
668 mutex_unlock(&dp->event_mutex);
672 /* disable HPD plug interrupts */
673 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, false);
676 * We don't need separate work for disconnect as
677 * connect/attention interrupts are disabled
679 dp_display_notify_disconnect(&dp->pdev->dev);
681 if (state == ST_DISPLAY_OFF) {
682 dp->hpd_state = ST_DISCONNECTED;
684 dp->hpd_state = ST_DISCONNECT_PENDING;
687 /* signal the disconnect event early to ensure proper teardown */
688 dp_display_handle_plugged_change(&dp->dp_display, false);
690 /* enable HDP plug interrupt to prepare for next plugin */
691 if (!dp->dp_display.is_edp)
692 dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_PLUG_INT_MASK, true);
694 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
695 dp->dp_display.connector_type, state);
697 /* uevent will complete disconnection part */
698 mutex_unlock(&dp->event_mutex);
702 static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
706 mutex_lock(&dp->event_mutex);
708 /* irq_hpd can happen at either connected or disconnected state */
709 state = dp->hpd_state;
710 drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
711 dp->dp_display.connector_type, state);
713 if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
714 mutex_unlock(&dp->event_mutex);
718 if (state == ST_MAINLINK_READY || state == ST_DISCONNECT_PENDING) {
719 /* wait until ST_CONNECTED */
720 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 1); /* delay = 1 */
721 mutex_unlock(&dp->event_mutex);
725 dp_display_usbpd_attention_cb(&dp->pdev->dev);
727 drm_dbg_dp(dp->drm_dev, "After, type=%d hpd_state=%d\n",
728 dp->dp_display.connector_type, state);
730 mutex_unlock(&dp->event_mutex);
735 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
737 dp_debug_put(dp->debug);
738 dp_audio_put(dp->audio);
739 dp_panel_put(dp->panel);
743 static int dp_init_sub_modules(struct dp_display_private *dp)
746 struct device *dev = &dp->pdev->dev;
747 struct dp_usbpd_cb *cb = &dp->usbpd_cb;
748 struct dp_panel_in panel_in = {
752 /* Callback APIs used for cable status change event */
753 cb->configure = dp_display_usbpd_configure_cb;
754 cb->disconnect = dp_display_usbpd_disconnect_cb;
755 cb->attention = dp_display_usbpd_attention_cb;
757 dp->usbpd = dp_hpd_get(dev, cb);
758 if (IS_ERR(dp->usbpd)) {
759 rc = PTR_ERR(dp->usbpd);
760 DRM_ERROR("failed to initialize hpd, rc = %d\n", rc);
765 dp->parser = dp_parser_get(dp->pdev);
766 if (IS_ERR(dp->parser)) {
767 rc = PTR_ERR(dp->parser);
768 DRM_ERROR("failed to initialize parser, rc = %d\n", rc);
773 dp->catalog = dp_catalog_get(dev, &dp->parser->io);
774 if (IS_ERR(dp->catalog)) {
775 rc = PTR_ERR(dp->catalog);
776 DRM_ERROR("failed to initialize catalog, rc = %d\n", rc);
781 dp->power = dp_power_get(dev, dp->parser);
782 if (IS_ERR(dp->power)) {
783 rc = PTR_ERR(dp->power);
784 DRM_ERROR("failed to initialize power, rc = %d\n", rc);
789 dp->aux = dp_aux_get(dev, dp->catalog, dp->dp_display.is_edp);
790 if (IS_ERR(dp->aux)) {
791 rc = PTR_ERR(dp->aux);
792 DRM_ERROR("failed to initialize aux, rc = %d\n", rc);
797 dp->link = dp_link_get(dev, dp->aux);
798 if (IS_ERR(dp->link)) {
799 rc = PTR_ERR(dp->link);
800 DRM_ERROR("failed to initialize link, rc = %d\n", rc);
805 panel_in.aux = dp->aux;
806 panel_in.catalog = dp->catalog;
807 panel_in.link = dp->link;
809 dp->panel = dp_panel_get(&panel_in);
810 if (IS_ERR(dp->panel)) {
811 rc = PTR_ERR(dp->panel);
812 DRM_ERROR("failed to initialize panel, rc = %d\n", rc);
817 dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
818 dp->power, dp->catalog, dp->parser);
819 if (IS_ERR(dp->ctrl)) {
820 rc = PTR_ERR(dp->ctrl);
821 DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);
826 dp->audio = dp_audio_get(dp->pdev, dp->panel, dp->catalog);
827 if (IS_ERR(dp->audio)) {
828 rc = PTR_ERR(dp->audio);
829 pr_err("failed to initialize audio, rc = %d\n", rc);
834 /* populate wide_bus_en to differernt layers */
835 dp->ctrl->wide_bus_en = dp->wide_bus_en;
836 dp->catalog->wide_bus_en = dp->wide_bus_en;
841 dp_panel_put(dp->panel);
848 static int dp_display_set_mode(struct msm_dp *dp_display,
849 struct dp_display_mode *mode)
851 struct dp_display_private *dp;
853 dp = container_of(dp_display, struct dp_display_private, dp_display);
855 dp->panel->dp_mode.drm_mode = mode->drm_mode;
856 dp->panel->dp_mode.bpp = mode->bpp;
857 dp->panel->dp_mode.capabilities = mode->capabilities;
858 dp_panel_init_panel_info(dp->panel);
862 static int dp_display_prepare(struct msm_dp *dp_display)
867 static int dp_display_enable(struct dp_display_private *dp, u32 data)
870 struct msm_dp *dp_display = &dp->dp_display;
872 drm_dbg_dp(dp->drm_dev, "sink_count=%d\n", dp->link->sink_count);
873 if (dp_display->power_on) {
874 drm_dbg_dp(dp->drm_dev, "Link already setup, return\n");
878 rc = dp_ctrl_on_stream(dp->ctrl, data);
880 dp_display->power_on = true;
885 static int dp_display_post_enable(struct msm_dp *dp_display)
887 struct dp_display_private *dp;
890 dp = container_of(dp_display, struct dp_display_private, dp_display);
892 rate = dp->link->link_params.rate;
894 if (dp->audio_supported) {
895 dp->audio->bw_code = drm_dp_link_rate_to_bw_code(rate);
896 dp->audio->lane_count = dp->link->link_params.num_lanes;
899 /* signal the connect event late to synchronize video and display */
900 dp_display_handle_plugged_change(dp_display, true);
904 static int dp_display_disable(struct dp_display_private *dp, u32 data)
906 struct msm_dp *dp_display = &dp->dp_display;
908 if (!dp_display->power_on)
911 /* wait only if audio was enabled */
912 if (dp_display->audio_enabled) {
913 /* signal the disconnect event */
914 dp_display_handle_plugged_change(dp_display, false);
915 if (!wait_for_completion_timeout(&dp->audio_comp,
917 DRM_ERROR("audio comp timeout\n");
920 dp_display->audio_enabled = false;
922 if (dp->link->sink_count == 0) {
924 * irq_hpd with sink_count = 0
925 * hdmi unplugged out of dongle
927 dp_ctrl_off_link_stream(dp->ctrl);
930 * unplugged interrupt
931 * dongle unplugged out of DUT
933 dp_ctrl_off(dp->ctrl);
934 dp_display_host_phy_exit(dp);
937 dp_display->power_on = false;
939 drm_dbg_dp(dp->drm_dev, "sink count: %d\n", dp->link->sink_count);
943 static int dp_display_unprepare(struct msm_dp *dp_display)
948 int dp_display_set_plugged_cb(struct msm_dp *dp_display,
949 hdmi_codec_plugged_cb fn, struct device *codec_dev)
953 dp_display->plugged_cb = fn;
954 dp_display->codec_dev = codec_dev;
955 plugged = dp_display->is_connected;
956 dp_display_handle_plugged_change(dp_display, plugged);
962 * dp_bridge_mode_valid - callback to determine if specified mode is valid
963 * @bridge: Pointer to drm bridge structure
964 * @info: display info
965 * @mode: Pointer to drm mode structure
966 * Returns: Validity status for specified mode
968 enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge,
969 const struct drm_display_info *info,
970 const struct drm_display_mode *mode)
972 const u32 num_components = 3, default_bpp = 24;
973 struct dp_display_private *dp_display;
974 struct dp_link_info *link_info;
975 u32 mode_rate_khz = 0, supported_rate_khz = 0, mode_bpp = 0;
977 int mode_pclk_khz = mode->clock;
979 dp = to_dp_bridge(bridge)->dp_display;
981 if (!dp || !mode_pclk_khz || !dp->connector) {
982 DRM_ERROR("invalid params\n");
987 * The eDP controller currently does not have a reliable way of
988 * enabling panel power to read sink capabilities. So, we rely
989 * on the panel driver to populate only supported modes for now.
994 if (mode->clock > DP_MAX_PIXEL_CLK_KHZ)
997 dp_display = container_of(dp, struct dp_display_private, dp_display);
998 link_info = &dp_display->panel->link_info;
1000 mode_bpp = dp->connector->display_info.bpc * num_components;
1002 mode_bpp = default_bpp;
1004 mode_bpp = dp_panel_get_mode_bpp(dp_display->panel,
1005 mode_bpp, mode_pclk_khz);
1007 mode_rate_khz = mode_pclk_khz * mode_bpp;
1008 supported_rate_khz = link_info->num_lanes * link_info->rate * 8;
1010 if (mode_rate_khz > supported_rate_khz)
1016 int dp_display_get_modes(struct msm_dp *dp)
1018 struct dp_display_private *dp_display;
1021 DRM_ERROR("invalid params\n");
1025 dp_display = container_of(dp, struct dp_display_private, dp_display);
1027 return dp_panel_get_modes(dp_display->panel,
1031 bool dp_display_check_video_test(struct msm_dp *dp)
1033 struct dp_display_private *dp_display;
1035 dp_display = container_of(dp, struct dp_display_private, dp_display);
1037 return dp_display->panel->video_test;
1040 int dp_display_get_test_bpp(struct msm_dp *dp)
1042 struct dp_display_private *dp_display;
1045 DRM_ERROR("invalid params\n");
1049 dp_display = container_of(dp, struct dp_display_private, dp_display);
1051 return dp_link_bit_depth_to_bpp(
1052 dp_display->link->test_video.test_bit_depth);
1055 void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp)
1057 struct dp_display_private *dp_display;
1059 dp_display = container_of(dp, struct dp_display_private, dp_display);
1062 * if we are reading registers we need the link clocks to be on
1063 * however till DP cable is connected this will not happen as we
1064 * do not know the resolution to power up with. Hence check the
1065 * power_on status before dumping DP registers to avoid crash due
1066 * to unclocked access
1068 mutex_lock(&dp_display->event_mutex);
1070 if (!dp->power_on) {
1071 mutex_unlock(&dp_display->event_mutex);
1075 dp_catalog_snapshot(dp_display->catalog, disp_state);
1077 mutex_unlock(&dp_display->event_mutex);
1080 static void dp_display_config_hpd(struct dp_display_private *dp)
1083 dp_display_host_init(dp);
1084 dp_catalog_ctrl_hpd_config(dp->catalog);
1086 /* Enable plug and unplug interrupts only for external DisplayPort */
1087 if (!dp->dp_display.is_edp)
1088 dp_catalog_hpd_config_intr(dp->catalog,
1089 DP_DP_HPD_PLUG_INT_MASK |
1090 DP_DP_HPD_UNPLUG_INT_MASK,
1093 /* Enable interrupt first time
1094 * we are leaving dp clocks on during disconnect
1095 * and never disable interrupt
1097 enable_irq(dp->irq);
1100 static int hpd_event_thread(void *data)
1102 struct dp_display_private *dp_priv;
1104 struct dp_event *todo;
1105 int timeout_mode = 0;
1107 dp_priv = (struct dp_display_private *)data;
1111 wait_event_timeout(dp_priv->event_q,
1112 (dp_priv->event_pndx == dp_priv->event_gndx) ||
1113 kthread_should_stop(), EVENT_TIMEOUT);
1115 wait_event_interruptible(dp_priv->event_q,
1116 (dp_priv->event_pndx != dp_priv->event_gndx) ||
1117 kthread_should_stop());
1120 if (kthread_should_stop())
1123 spin_lock_irqsave(&dp_priv->event_lock, flag);
1124 todo = &dp_priv->event_list[dp_priv->event_gndx];
1126 struct dp_event *todo_next;
1128 dp_priv->event_gndx++;
1129 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1131 /* re enter delay event into q */
1132 todo_next = &dp_priv->event_list[dp_priv->event_pndx++];
1133 dp_priv->event_pndx %= DP_EVENT_Q_MAX;
1134 todo_next->event_id = todo->event_id;
1135 todo_next->data = todo->data;
1136 todo_next->delay = todo->delay - 1;
1138 /* clean up older event */
1139 todo->event_id = EV_NO_EVENT;
1142 /* switch to timeout mode */
1144 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1148 /* timeout with no events in q */
1149 if (dp_priv->event_pndx == dp_priv->event_gndx) {
1150 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1154 dp_priv->event_gndx++;
1155 dp_priv->event_gndx %= DP_EVENT_Q_MAX;
1157 spin_unlock_irqrestore(&dp_priv->event_lock, flag);
1159 switch (todo->event_id) {
1160 case EV_HPD_INIT_SETUP:
1161 dp_display_config_hpd(dp_priv);
1163 case EV_HPD_PLUG_INT:
1164 dp_hpd_plug_handle(dp_priv, todo->data);
1166 case EV_HPD_UNPLUG_INT:
1167 dp_hpd_unplug_handle(dp_priv, todo->data);
1169 case EV_IRQ_HPD_INT:
1170 dp_irq_hpd_handle(dp_priv, todo->data);
1172 case EV_USER_NOTIFICATION:
1173 dp_display_send_hpd_notification(dp_priv,
1184 static int dp_hpd_event_thread_start(struct dp_display_private *dp_priv)
1186 /* set event q to empty */
1187 dp_priv->event_gndx = 0;
1188 dp_priv->event_pndx = 0;
1190 dp_priv->ev_tsk = kthread_run(hpd_event_thread, dp_priv, "dp_hpd_handler");
1191 if (IS_ERR(dp_priv->ev_tsk))
1192 return PTR_ERR(dp_priv->ev_tsk);
1197 static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
1199 struct dp_display_private *dp = dev_id;
1200 irqreturn_t ret = IRQ_HANDLED;
1204 DRM_ERROR("invalid data\n");
1208 hpd_isr_status = dp_catalog_hpd_get_intr_status(dp->catalog);
1210 if (hpd_isr_status & 0x0F) {
1211 drm_dbg_dp(dp->drm_dev, "type=%d isr=0x%x\n",
1212 dp->dp_display.connector_type, hpd_isr_status);
1213 /* hpd related interrupts */
1214 if (hpd_isr_status & DP_DP_HPD_PLUG_INT_MASK)
1215 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
1217 if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) {
1218 dp_add_event(dp, EV_IRQ_HPD_INT, 0, 0);
1221 if (hpd_isr_status & DP_DP_HPD_REPLUG_INT_MASK) {
1222 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1223 dp_add_event(dp, EV_HPD_PLUG_INT, 0, 3);
1226 if (hpd_isr_status & DP_DP_HPD_UNPLUG_INT_MASK)
1227 dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
1230 /* DP controller isr */
1231 dp_ctrl_isr(dp->ctrl);
1234 dp_aux_isr(dp->aux);
1239 int dp_display_request_irq(struct msm_dp *dp_display)
1242 struct dp_display_private *dp;
1245 DRM_ERROR("invalid input\n");
1249 dp = container_of(dp_display, struct dp_display_private, dp_display);
1251 dp->irq = irq_of_parse_and_map(dp->pdev->dev.of_node, 0);
1253 DRM_ERROR("failed to get irq\n");
1257 rc = devm_request_irq(&dp->pdev->dev, dp->irq,
1258 dp_display_irq_handler,
1259 IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
1261 DRM_ERROR("failed to request IRQ%u: %d\n",
1265 disable_irq(dp->irq);
1270 static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pdev,
1273 const struct msm_dp_config *cfg = of_device_get_match_data(&pdev->dev);
1274 struct resource *res;
1277 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1281 for (i = 0; i < cfg->num_descs; i++) {
1282 if (cfg->descs[i].io_start == res->start) {
1284 return &cfg->descs[i];
1288 dev_err(&pdev->dev, "unknown displayport instance\n");
1292 static int dp_display_probe(struct platform_device *pdev)
1295 struct dp_display_private *dp;
1296 const struct msm_dp_desc *desc;
1298 if (!pdev || !pdev->dev.of_node) {
1299 DRM_ERROR("pdev not found\n");
1303 dp = devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
1307 desc = dp_display_get_desc(pdev, &dp->id);
1312 dp->name = "drm_dp";
1313 dp->dp_display.connector_type = desc->connector_type;
1314 dp->wide_bus_en = desc->wide_bus_en;
1315 dp->dp_display.is_edp =
1316 (dp->dp_display.connector_type == DRM_MODE_CONNECTOR_eDP);
1318 rc = dp_init_sub_modules(dp);
1320 DRM_ERROR("init sub module failed\n");
1321 return -EPROBE_DEFER;
1325 mutex_init(&dp->event_mutex);
1326 init_waitqueue_head(&dp->event_q);
1327 spin_lock_init(&dp->event_lock);
1329 /* Store DP audio handle inside DP display */
1330 dp->dp_display.dp_audio = dp->audio;
1332 init_completion(&dp->audio_comp);
1334 platform_set_drvdata(pdev, &dp->dp_display);
1336 rc = component_add(&pdev->dev, &dp_display_comp_ops);
1338 DRM_ERROR("component add failed, rc=%d\n", rc);
1339 dp_display_deinit_sub_modules(dp);
1345 static int dp_display_remove(struct platform_device *pdev)
1347 struct dp_display_private *dp = dev_get_dp_display_private(&pdev->dev);
1349 dp_display_deinit_sub_modules(dp);
1351 component_del(&pdev->dev, &dp_display_comp_ops);
1352 platform_set_drvdata(pdev, NULL);
1357 static int dp_pm_resume(struct device *dev)
1359 struct platform_device *pdev = to_platform_device(dev);
1360 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1361 struct dp_display_private *dp;
1364 dp = container_of(dp_display, struct dp_display_private, dp_display);
1366 mutex_lock(&dp->event_mutex);
1368 drm_dbg_dp(dp->drm_dev,
1369 "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1370 dp->dp_display.connector_type, dp->core_initialized,
1371 dp->phy_initialized, dp_display->power_on);
1373 /* start from disconnected state */
1374 dp->hpd_state = ST_DISCONNECTED;
1376 /* turn on dp ctrl/phy */
1377 dp_display_host_init(dp);
1379 dp_catalog_ctrl_hpd_config(dp->catalog);
1382 if (!dp->dp_display.is_edp)
1383 dp_catalog_hpd_config_intr(dp->catalog,
1384 DP_DP_HPD_PLUG_INT_MASK |
1385 DP_DP_HPD_UNPLUG_INT_MASK,
1388 if (dp_catalog_link_is_connected(dp->catalog)) {
1390 * set sink to normal operation mode -- D0
1393 dp_display_host_phy_init(dp);
1394 dp_link_psm_config(dp->link, &dp->panel->link_info, false);
1395 sink_count = drm_dp_read_sink_count(dp->aux);
1399 dp_display_host_phy_exit(dp);
1402 dp->link->sink_count = sink_count;
1404 * can not declared display is connected unless
1405 * HDMI cable is plugged in and sink_count of
1407 * also only signal audio when disconnected
1409 if (dp->link->sink_count) {
1410 dp->dp_display.is_connected = true;
1412 dp->dp_display.is_connected = false;
1413 dp_display_handle_plugged_change(dp_display, false);
1416 drm_dbg_dp(dp->drm_dev,
1417 "After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n",
1418 dp->dp_display.connector_type, dp->link->sink_count,
1419 dp->dp_display.is_connected, dp->core_initialized,
1420 dp->phy_initialized, dp_display->power_on);
1422 mutex_unlock(&dp->event_mutex);
1427 static int dp_pm_suspend(struct device *dev)
1429 struct platform_device *pdev = to_platform_device(dev);
1430 struct msm_dp *dp_display = platform_get_drvdata(pdev);
1431 struct dp_display_private *dp;
1433 dp = container_of(dp_display, struct dp_display_private, dp_display);
1435 mutex_lock(&dp->event_mutex);
1437 drm_dbg_dp(dp->drm_dev,
1438 "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1439 dp->dp_display.connector_type, dp->core_initialized,
1440 dp->phy_initialized, dp_display->power_on);
1442 /* mainlink enabled */
1443 if (dp_power_clk_status(dp->power, DP_CTRL_PM))
1444 dp_ctrl_off_link_stream(dp->ctrl);
1446 dp_display_host_phy_exit(dp);
1448 /* host_init will be called at pm_resume */
1449 dp_display_host_deinit(dp);
1451 dp->hpd_state = ST_SUSPENDED;
1453 drm_dbg_dp(dp->drm_dev,
1454 "After, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
1455 dp->dp_display.connector_type, dp->core_initialized,
1456 dp->phy_initialized, dp_display->power_on);
1458 mutex_unlock(&dp->event_mutex);
1463 static int dp_pm_prepare(struct device *dev)
1468 static void dp_pm_complete(struct device *dev)
1473 static const struct dev_pm_ops dp_pm_ops = {
1474 .suspend = dp_pm_suspend,
1475 .resume = dp_pm_resume,
1476 .prepare = dp_pm_prepare,
1477 .complete = dp_pm_complete,
1480 static struct platform_driver dp_display_driver = {
1481 .probe = dp_display_probe,
1482 .remove = dp_display_remove,
1484 .name = "msm-dp-display",
1485 .of_match_table = dp_dt_match,
1486 .suppress_bind_attrs = true,
1491 int __init msm_dp_register(void)
1495 ret = platform_driver_register(&dp_display_driver);
1497 DRM_ERROR("Dp display driver register failed");
1502 void __exit msm_dp_unregister(void)
1504 platform_driver_unregister(&dp_display_driver);
1507 void msm_dp_irq_postinstall(struct msm_dp *dp_display)
1509 struct dp_display_private *dp;
1514 dp = container_of(dp_display, struct dp_display_private, dp_display);
1516 if (!dp_display->is_edp)
1517 dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 100);
1520 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
1522 struct dp_display_private *dp;
1524 dp = container_of(dp_display, struct dp_display_private, dp_display);
1526 return dp->wide_bus_en;
1529 void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
1531 struct dp_display_private *dp;
1535 dp = container_of(dp_display, struct dp_display_private, dp_display);
1536 dev = &dp->pdev->dev;
1538 dp->debug = dp_debug_get(dev, dp->panel, dp->usbpd,
1539 dp->link, dp->dp_display.connector,
1541 if (IS_ERR(dp->debug)) {
1542 rc = PTR_ERR(dp->debug);
1543 DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
1548 static int dp_display_get_next_bridge(struct msm_dp *dp)
1551 struct dp_display_private *dp_priv;
1552 struct device_node *aux_bus;
1555 dp_priv = container_of(dp, struct dp_display_private, dp_display);
1556 dev = &dp_priv->pdev->dev;
1557 aux_bus = of_get_child_by_name(dev->of_node, "aux-bus");
1559 if (aux_bus && dp->is_edp) {
1560 dp_display_host_init(dp_priv);
1561 dp_catalog_ctrl_hpd_config(dp_priv->catalog);
1562 dp_display_host_phy_init(dp_priv);
1563 enable_irq(dp_priv->irq);
1566 * The code below assumes that the panel will finish probing
1567 * by the time devm_of_dp_aux_populate_ep_devices() returns.
1568 * This isn't a great assumption since it will fail if the
1569 * panel driver is probed asynchronously but is the best we
1570 * can do without a bigger driver reorganization.
1572 rc = devm_of_dp_aux_populate_ep_devices(dp_priv->aux);
1573 of_node_put(aux_bus);
1576 } else if (dp->is_edp) {
1577 DRM_ERROR("eDP aux_bus not found\n");
1582 * External bridges are mandatory for eDP interfaces: one has to
1583 * provide at least an eDP panel (which gets wrapped into panel-bridge).
1585 * For DisplayPort interfaces external bridges are optional, so
1586 * silently ignore an error if one is not present (-ENODEV).
1588 rc = dp_parser_find_next_bridge(dp_priv->parser);
1589 if (!dp->is_edp && rc == -ENODEV)
1593 dp->next_bridge = dp_priv->parser->next_bridge;
1599 disable_irq(dp_priv->irq);
1600 dp_display_host_phy_exit(dp_priv);
1601 dp_display_host_deinit(dp_priv);
1606 int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
1607 struct drm_encoder *encoder)
1609 struct msm_drm_private *priv;
1610 struct dp_display_private *dp_priv;
1613 if (WARN_ON(!encoder) || WARN_ON(!dp_display) || WARN_ON(!dev))
1616 priv = dev->dev_private;
1617 dp_display->drm_dev = dev;
1619 dp_priv = container_of(dp_display, struct dp_display_private, dp_display);
1621 ret = dp_display_request_irq(dp_display);
1623 DRM_ERROR("request_irq failed, ret=%d\n", ret);
1627 dp_display->encoder = encoder;
1629 ret = dp_display_get_next_bridge(dp_display);
1633 dp_display->bridge = dp_bridge_init(dp_display, dev, encoder);
1634 if (IS_ERR(dp_display->bridge)) {
1635 ret = PTR_ERR(dp_display->bridge);
1636 DRM_DEV_ERROR(dev->dev,
1637 "failed to create dp bridge: %d\n", ret);
1638 dp_display->bridge = NULL;
1642 priv->bridges[priv->num_bridges++] = dp_display->bridge;
1644 dp_display->connector = dp_drm_connector_init(dp_display);
1645 if (IS_ERR(dp_display->connector)) {
1646 ret = PTR_ERR(dp_display->connector);
1647 DRM_DEV_ERROR(dev->dev,
1648 "failed to create dp connector: %d\n", ret);
1649 dp_display->connector = NULL;
1653 dp_priv->panel->connector = dp_display->connector;
1658 void dp_bridge_enable(struct drm_bridge *drm_bridge)
1660 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1661 struct msm_dp *dp = dp_bridge->dp_display;
1663 struct dp_display_private *dp_display;
1665 bool force_link_train = false;
1667 dp_display = container_of(dp, struct dp_display_private, dp_display);
1668 if (!dp_display->dp_mode.drm_mode.clock) {
1669 DRM_ERROR("invalid params\n");
1674 dp_hpd_plug_handle(dp_display, 0);
1676 mutex_lock(&dp_display->event_mutex);
1678 state = dp_display->hpd_state;
1679 if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) {
1680 mutex_unlock(&dp_display->event_mutex);
1684 rc = dp_display_set_mode(dp, &dp_display->dp_mode);
1686 DRM_ERROR("Failed to perform a mode set, rc=%d\n", rc);
1687 mutex_unlock(&dp_display->event_mutex);
1691 rc = dp_display_prepare(dp);
1693 DRM_ERROR("DP display prepare failed, rc=%d\n", rc);
1694 mutex_unlock(&dp_display->event_mutex);
1698 state = dp_display->hpd_state;
1700 if (state == ST_DISPLAY_OFF) {
1701 dp_display_host_phy_init(dp_display);
1702 force_link_train = true;
1705 dp_display_enable(dp_display, force_link_train);
1707 rc = dp_display_post_enable(dp);
1709 DRM_ERROR("DP display post enable failed, rc=%d\n", rc);
1710 dp_display_disable(dp_display, 0);
1711 dp_display_unprepare(dp);
1714 /* completed connection */
1715 dp_display->hpd_state = ST_CONNECTED;
1717 drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
1718 mutex_unlock(&dp_display->event_mutex);
1721 void dp_bridge_disable(struct drm_bridge *drm_bridge)
1723 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1724 struct msm_dp *dp = dp_bridge->dp_display;
1725 struct dp_display_private *dp_display;
1727 dp_display = container_of(dp, struct dp_display_private, dp_display);
1729 dp_ctrl_push_idle(dp_display->ctrl);
1732 void dp_bridge_post_disable(struct drm_bridge *drm_bridge)
1734 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1735 struct msm_dp *dp = dp_bridge->dp_display;
1738 struct dp_display_private *dp_display;
1740 dp_display = container_of(dp, struct dp_display_private, dp_display);
1743 dp_hpd_unplug_handle(dp_display, 0);
1745 mutex_lock(&dp_display->event_mutex);
1747 state = dp_display->hpd_state;
1748 if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) {
1749 mutex_unlock(&dp_display->event_mutex);
1753 dp_display_disable(dp_display, 0);
1755 rc = dp_display_unprepare(dp);
1757 DRM_ERROR("DP display unprepare failed, rc=%d\n", rc);
1759 state = dp_display->hpd_state;
1760 if (state == ST_DISCONNECT_PENDING) {
1761 /* completed disconnection */
1762 dp_display->hpd_state = ST_DISCONNECTED;
1764 dp_display->hpd_state = ST_DISPLAY_OFF;
1767 drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
1768 mutex_unlock(&dp_display->event_mutex);
1771 void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
1772 const struct drm_display_mode *mode,
1773 const struct drm_display_mode *adjusted_mode)
1775 struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
1776 struct msm_dp *dp = dp_bridge->dp_display;
1777 struct dp_display_private *dp_display;
1779 dp_display = container_of(dp, struct dp_display_private, dp_display);
1781 memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
1783 if (dp_display_check_video_test(dp))
1784 dp_display->dp_mode.bpp = dp_display_get_test_bpp(dp);
1785 else /* Default num_components per pixel = 3 */
1786 dp_display->dp_mode.bpp = dp->connector->display_info.bpc * 3;
1788 if (!dp_display->dp_mode.bpp)
1789 dp_display->dp_mode.bpp = 24; /* Default bpp */
1791 drm_mode_copy(&dp_display->dp_mode.drm_mode, adjusted_mode);
1793 dp_display->dp_mode.v_active_low =
1794 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NVSYNC);
1796 dp_display->dp_mode.h_active_low =
1797 !!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);