1 files changed, 257 insertions, 307 deletions

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index e329e03e068d..672a7ba52eda 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -9,19 +9,19 @@
 #include <linux/debugfs.h>
 #include <linux/component.h>
 #include <linux/of_irq.h>
+#include <linux/phy/phy.h>
 #include <linux/delay.h>
 #include <drm/display/drm_dp_aux_bus.h>
+#include <drm/drm_edid.h>
 
 #include "msm_drv.h"
 #include "msm_kms.h"
-#include "dp_parser.h"
-#include "dp_power.h"
+#include "dp_ctrl.h"
 #include "dp_catalog.h"
 #include "dp_aux.h"
 #include "dp_reg.h"
 #include "dp_link.h"
 #include "dp_panel.h"
-#include "dp_ctrl.h"
 #include "dp_display.h"
 #include "dp_drm.h"
 #include "dp_audio.h"
@@ -49,13 +49,11 @@ enum {
 	ST_CONNECTED,
 	ST_DISCONNECT_PENDING,
 	ST_DISPLAY_OFF,
-	ST_SUSPENDED,
 };
 
 enum {
 	EV_NO_EVENT,
 	/* hpd events */
-	EV_HPD_INIT_SETUP,
 	EV_HPD_PLUG_INT,
 	EV_IRQ_HPD_INT,
 	EV_HPD_UNPLUG_INT,
@@ -76,7 +74,6 @@ struct dp_event {
 };
 
 struct dp_display_private {
-	char *name;
 	int irq;
 
 	unsigned int id;
@@ -84,20 +81,15 @@ struct dp_display_private {
 	/* state variables */
 	bool core_initialized;
 	bool phy_initialized;
-	bool hpd_irq_on;
 	bool audio_supported;
 
 	struct drm_device *drm_dev;
-	struct dentry *root;
 
-	struct dp_parser  *parser;
-	struct dp_power   *power;
 	struct dp_catalog *catalog;
 	struct drm_dp_aux *aux;
 	struct dp_link    *link;
 	struct dp_panel   *panel;
 	struct dp_ctrl    *ctrl;
-	struct dp_debug   *debug;
 
 	struct dp_display_mode dp_mode;
 	struct msm_dp dp_display;
@@ -115,7 +107,7 @@ struct dp_display_private {
 	struct dp_event event_list[DP_EVENT_Q_MAX];
 	spinlock_t event_lock;
 
-	bool wide_bus_en;
+	bool wide_bus_supported;
 
 	struct dp_audio *audio;
 };
@@ -123,50 +115,49 @@ struct dp_display_private {
 struct msm_dp_desc {
 	phys_addr_t io_start;
 	unsigned int id;
-	unsigned int connector_type;
-	bool wide_bus_en;
+	bool wide_bus_supported;
 };
 
 static const struct msm_dp_desc sc7180_dp_descs[] = {
-	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
+	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0 },
 	{}
 };
 
 static const struct msm_dp_desc sc7280_dp_descs[] = {
-	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_1, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
+	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
+	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
 	{}
 };
 
 static const struct msm_dp_desc sc8180x_dp_descs[] = {
-	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
-	{ .io_start = 0x0ae98000, .id = MSM_DP_CONTROLLER_1, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
-	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2, .connector_type = DRM_MODE_CONNECTOR_eDP },
+	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0 },
+	{ .io_start = 0x0ae98000, .id = MSM_DP_CONTROLLER_1 },
+	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2 },
 	{}
 };
 
 static const struct msm_dp_desc sc8280xp_dp_descs[] = {
-	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x0ae98000, .id = MSM_DP_CONTROLLER_1, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_3, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x22090000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x22098000, .id = MSM_DP_CONTROLLER_1, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x2209a000, .id = MSM_DP_CONTROLLER_2, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
-	{ .io_start = 0x220a0000, .id = MSM_DP_CONTROLLER_3, .connector_type = DRM_MODE_CONNECTOR_DisplayPort, .wide_bus_en = true },
+	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
+	{ .io_start = 0x0ae98000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
+	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported = true },
+	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported = true },
+	{ .io_start = 0x22090000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
+	{ .io_start = 0x22098000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
+	{ .io_start = 0x2209a000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported = true },
+	{ .io_start = 0x220a0000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported = true },
 	{}
 };
 
-static const struct msm_dp_desc sc8280xp_edp_descs[] = {
-	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
-	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_3, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
-	{ .io_start = 0x2209a000, .id = MSM_DP_CONTROLLER_2, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
-	{ .io_start = 0x220a0000, .id = MSM_DP_CONTROLLER_3, .connector_type = DRM_MODE_CONNECTOR_eDP, .wide_bus_en = true },
+static const struct msm_dp_desc sm8650_dp_descs[] = {
+	{ .io_start = 0x0af54000, .id = MSM_DP_CONTROLLER_0 },
 	{}
 };
 
-static const struct msm_dp_desc sm8350_dp_descs[] = {
-	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
+static const struct msm_dp_desc x1e80100_dp_descs[] = {
+	{ .io_start = 0x0ae90000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
+	{ .io_start = 0x0ae98000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
+	{ .io_start = 0x0ae9a000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported = true },
+	{ .io_start = 0x0aea0000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported = true },
 	{}
 };
 
@@ -177,9 +168,11 @@ static const struct of_device_id dp_dt_match[] = {
 	{ .compatible = "qcom,sc8180x-dp", .data = &sc8180x_dp_descs },
 	{ .compatible = "qcom,sc8180x-edp", .data = &sc8180x_dp_descs },
 	{ .compatible = "qcom,sc8280xp-dp", .data = &sc8280xp_dp_descs },
-	{ .compatible = "qcom,sc8280xp-edp", .data = &sc8280xp_edp_descs },
+	{ .compatible = "qcom,sc8280xp-edp", .data = &sc8280xp_dp_descs },
 	{ .compatible = "qcom,sdm845-dp", .data = &sc7180_dp_descs },
-	{ .compatible = "qcom,sm8350-dp", .data = &sm8350_dp_descs },
+	{ .compatible = "qcom,sm8350-dp", .data = &sc7180_dp_descs },
+	{ .compatible = "qcom,sm8650-dp", .data = &sm8650_dp_descs },
+	{ .compatible = "qcom,x1e80100-dp", .data = &x1e80100_dp_descs },
 	{}
 };
 
@@ -275,11 +268,6 @@ static int dp_display_bind(struct device *dev, struct device *master,
 	dp->dp_display.drm_dev = drm;
 	priv->dp[dp->id] = &dp->dp_display;
 
-	rc = dp->parser->parse(dp->parser);
-	if (rc) {
-		DRM_ERROR("device tree parsing failed\n");
-		goto end;
-	}
 
 
 	dp->drm_dev = drm;
@@ -290,11 +278,6 @@ static int dp_display_bind(struct device *dev, struct device *master,
 		goto end;
 	}
 
-	rc = dp_power_client_init(dp->power);
-	if (rc) {
-		DRM_ERROR("Power client create failed\n");
-		goto end;
-	}
 
 	rc = dp_register_audio_driver(dev, dp->audio);
 	if (rc) {
@@ -319,15 +302,10 @@ static void dp_display_unbind(struct device *dev, struct device *master,
 	struct dp_display_private *dp = dev_get_dp_display_private(dev);
 	struct msm_drm_private *priv = dev_get_drvdata(master);
 
-	/* disable all HPD interrupts */
-	if (dp->core_initialized)
-		dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false);
-
 	kthread_stop(dp->ev_tsk);
 
 	of_dp_aux_depopulate_bus(dp->aux);
 
-	dp_power_client_deinit(dp->power);
 	dp_unregister_audio_driver(dev, dp->audio);
 	dp_aux_unregister(dp->aux);
 	dp->drm_dev = NULL;
@@ -351,12 +329,11 @@ static void dp_display_send_hpd_event(struct msm_dp *dp_display)
 	drm_helper_hpd_irq_event(connector->dev);
 }
 
-
 static int dp_display_send_hpd_notification(struct dp_display_private *dp,
 					    bool hpd)
 {
-	if ((hpd && dp->dp_display.is_connected) ||
-			(!hpd && !dp->dp_display.is_connected)) {
+	if ((hpd && dp->dp_display.link_ready) ||
+			(!hpd && !dp->dp_display.link_ready)) {
 		drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
 				(hpd ? "on" : "off"));
 		return 0;
@@ -365,12 +342,14 @@ static int dp_display_send_hpd_notification(struct dp_display_private *dp,
 	/* reset video pattern flag on disconnect */
 	if (!hpd) {
 		dp->panel->video_test = false;
-		drm_dp_set_subconnector_property(dp->dp_display.connector,
-						 connector_status_disconnected,
-						 dp->panel->dpcd, dp->panel->downstream_ports);
+		if (!dp->dp_display.is_edp)
+			drm_dp_set_subconnector_property(dp->dp_display.connector,
+							 connector_status_disconnected,
+							 dp->panel->dpcd,
+							 dp->panel->downstream_ports);
 	}
 
-	dp->dp_display.is_connected = hpd;
+	dp->dp_display.link_ready = hpd;
 
 	drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n",
 			dp->dp_display.connector_type, hpd);
@@ -384,20 +363,17 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp)
 	int rc = 0;
 	struct edid *edid;
 
-	dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
-	dp->panel->max_dp_link_rate = dp->parser->max_dp_link_rate;
-
-	drm_dbg_dp(dp->drm_dev, "max_lanes=%d max_link_rate=%d\n",
-		dp->panel->max_dp_lanes, dp->panel->max_dp_link_rate);
-
 	rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
 	if (rc)
 		goto end;
 
 	dp_link_process_request(dp->link);
 
-	drm_dp_set_subconnector_property(dp->dp_display.connector, connector_status_connected,
-					 dp->panel->dpcd, dp->panel->downstream_ports);
+	if (!dp->dp_display.is_edp)
+		drm_dp_set_subconnector_property(dp->dp_display.connector,
+						 connector_status_connected,
+						 dp->panel->dpcd,
+						 dp->panel->downstream_ports);
 
 	edid = dp->panel->edid;
 
@@ -406,8 +382,6 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp)
 	dp->audio_supported = drm_detect_monitor_audio(edid);
 	dp_panel_handle_sink_request(dp->panel);
 
-	dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
-
 	/*
 	 * set sink to normal operation mode -- D0
 	 * before dpcd read
@@ -457,7 +431,7 @@ static void dp_display_host_init(struct dp_display_private *dp)
 		dp->dp_display.connector_type, dp->core_initialized,
 		dp->phy_initialized);
 
-	dp_power_init(dp->power);
+	dp_ctrl_core_clk_enable(dp->ctrl);
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, true);
 	dp_aux_init(dp->aux);
 	dp->core_initialized = true;
@@ -471,7 +445,7 @@ static void dp_display_host_deinit(struct dp_display_private *dp)
 
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, false);
 	dp_aux_deinit(dp->aux);
-	dp_power_deinit(dp->power);
+	dp_ctrl_core_clk_disable(dp->ctrl);
 	dp->core_initialized = false;
 }
 
@@ -501,7 +475,7 @@ static void dp_display_handle_video_request(struct dp_display_private *dp)
 	}
 }
 
-static int dp_display_handle_port_ststus_changed(struct dp_display_private *dp)
+static int dp_display_handle_port_status_changed(struct dp_display_private *dp)
 {
 	int rc = 0;
 
@@ -558,7 +532,7 @@ static int dp_display_usbpd_attention_cb(struct device *dev)
 		drm_dbg_dp(dp->drm_dev, "hpd_state=%d sink_request=%d\n",
 					dp->hpd_state, sink_request);
 		if (sink_request & DS_PORT_STATUS_CHANGED)
-			rc = dp_display_handle_port_ststus_changed(dp);
+			rc = dp_display_handle_port_status_changed(dp);
 		else
 			rc = dp_display_handle_irq_hpd(dp);
 	}
@@ -570,6 +544,9 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 {
 	u32 state;
 	int ret;
+	struct platform_device *pdev = dp->dp_display.pdev;
+
+	dp_aux_enable_xfers(dp->aux, true);
 
 	mutex_lock(&dp->event_mutex);
 
@@ -577,7 +554,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 	drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
 			dp->dp_display.connector_type, state);
 
-	if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
+	if (state == ST_DISPLAY_OFF) {
 		mutex_unlock(&dp->event_mutex);
 		return 0;
 	}
@@ -594,9 +571,17 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 		return 0;
 	}
 
-	ret = dp_display_usbpd_configure_cb(&dp->dp_display.pdev->dev);
+	ret = pm_runtime_resume_and_get(&pdev->dev);
+	if (ret) {
+		DRM_ERROR("failed to pm_runtime_resume\n");
+		mutex_unlock(&dp->event_mutex);
+		return ret;
+	}
+
+	ret = dp_display_usbpd_configure_cb(&pdev->dev);
 	if (ret) {	/* link train failed */
 		dp->hpd_state = ST_DISCONNECTED;
+		pm_runtime_put_sync(&pdev->dev);
 	} else {
 		dp->hpd_state = ST_MAINLINK_READY;
 	}
@@ -626,6 +611,9 @@ static void dp_display_handle_plugged_change(struct msm_dp *dp_display,
 static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 {
 	u32 state;
+	struct platform_device *pdev = dp->dp_display.pdev;
+
+	dp_aux_enable_xfers(dp->aux, false);
 
 	mutex_lock(&dp->event_mutex);
 
@@ -653,6 +641,7 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 		dp_display_host_phy_exit(dp);
 		dp->hpd_state = ST_DISCONNECTED;
 		dp_display_notify_disconnect(&dp->dp_display.pdev->dev);
+		pm_runtime_put_sync(&pdev->dev);
 		mutex_unlock(&dp->event_mutex);
 		return 0;
 	}
@@ -676,6 +665,7 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 			dp->dp_display.connector_type, state);
 
 	/* uevent will complete disconnection part */
+	pm_runtime_put_sync(&pdev->dev);
 	mutex_unlock(&dp->event_mutex);
 	return 0;
 }
@@ -691,7 +681,7 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 	drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n",
 			dp->dp_display.connector_type, state);
 
-	if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) {
+	if (state == ST_DISPLAY_OFF) {
 		mutex_unlock(&dp->event_mutex);
 		return 0;
 	}
@@ -715,7 +705,6 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 
 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
 {
-	dp_debug_put(dp->debug);
 	dp_audio_put(dp->audio);
 	dp_panel_put(dp->panel);
 	dp_aux_put(dp->aux);
@@ -728,16 +717,21 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 	struct dp_panel_in panel_in = {
 		.dev = dev,
 	};
+	struct phy *phy;
+
+	phy = devm_phy_get(dev, "dp");
+	if (IS_ERR(phy))
+		return PTR_ERR(phy);
 
-	dp->parser = dp_parser_get(dp->dp_display.pdev);
-	if (IS_ERR(dp->parser)) {
-		rc = PTR_ERR(dp->parser);
-		DRM_ERROR("failed to initialize parser, rc = %d\n", rc);
-		dp->parser = NULL;
+	rc = phy_set_mode_ext(phy, PHY_MODE_DP,
+			      dp->dp_display.is_edp ? PHY_SUBMODE_EDP : PHY_SUBMODE_DP);
+	if (rc) {
+		DRM_ERROR("failed to set phy submode, rc = %d\n", rc);
+		dp->catalog = NULL;
 		goto error;
 	}
 
-	dp->catalog = dp_catalog_get(dev, &dp->parser->io);
+	dp->catalog = dp_catalog_get(dev);
 	if (IS_ERR(dp->catalog)) {
 		rc = PTR_ERR(dp->catalog);
 		DRM_ERROR("failed to initialize catalog, rc = %d\n", rc);
@@ -745,15 +739,9 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error;
 	}
 
-	dp->power = dp_power_get(dev, dp->parser);
-	if (IS_ERR(dp->power)) {
-		rc = PTR_ERR(dp->power);
-		DRM_ERROR("failed to initialize power, rc = %d\n", rc);
-		dp->power = NULL;
-		goto error;
-	}
-
-	dp->aux = dp_aux_get(dev, dp->catalog, dp->dp_display.is_edp);
+	dp->aux = dp_aux_get(dev, dp->catalog,
+			     phy,
+			     dp->dp_display.is_edp);
 	if (IS_ERR(dp->aux)) {
 		rc = PTR_ERR(dp->aux);
 		DRM_ERROR("failed to initialize aux, rc = %d\n", rc);
@@ -782,7 +770,8 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 	}
 
 	dp->ctrl = dp_ctrl_get(dev, dp->link, dp->panel, dp->aux,
-			       dp->power, dp->catalog, dp->parser);
+			       dp->catalog,
+			       phy);
 	if (IS_ERR(dp->ctrl)) {
 		rc = PTR_ERR(dp->ctrl);
 		DRM_ERROR("failed to initialize ctrl, rc = %d\n", rc);
@@ -798,10 +787,6 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_ctrl;
 	}
 
-	/* populate wide_bus_en to differernt layers */
-	dp->ctrl->wide_bus_en = dp->wide_bus_en;
-	dp->catalog->wide_bus_en = dp->wide_bus_en;
-
 	return rc;
 
 error_ctrl:
@@ -821,7 +806,7 @@ static int dp_display_set_mode(struct msm_dp *dp_display,
 
 	drm_mode_copy(&dp->panel->dp_mode.drm_mode, &mode->drm_mode);
 	dp->panel->dp_mode.bpp = mode->bpp;
-	dp->panel->dp_mode.capabilities = mode->capabilities;
+	dp->panel->dp_mode.out_fmt_is_yuv_420 = mode->out_fmt_is_yuv_420;
 	dp_panel_init_panel_info(dp->panel);
 	return 0;
 }
@@ -913,7 +898,7 @@ int dp_display_set_plugged_cb(struct msm_dp *dp_display,
 
 	dp_display->plugged_cb = fn;
 	dp_display->codec_dev = codec_dev;
-	plugged = dp_display->is_connected;
+	plugged = dp_display->link_ready;
 	dp_display_handle_plugged_change(dp_display, plugged);
 
 	return 0;
@@ -950,6 +935,10 @@ enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge,
 	dp_display = container_of(dp, struct dp_display_private, dp_display);
 	link_info = &dp_display->panel->link_info;
 
+	if (drm_mode_is_420_only(&dp->connector->display_info, mode) &&
+	    dp_display->panel->vsc_sdp_supported)
+		mode_pclk_khz /= 2;
+
 	mode_bpp = dp->connector->display_info.bpc * num_components;
 	if (!mode_bpp)
 		mode_bpp = default_bpp;
@@ -1103,9 +1092,6 @@ static int hpd_event_thread(void *data)
 		spin_unlock_irqrestore(&dp_priv->event_lock, flag);
 
 		switch (todo->event_id) {
-		case EV_HPD_INIT_SETUP:
-			dp_display_host_init(dp_priv);
-			break;
 		case EV_HPD_PLUG_INT:
 			dp_hpd_plug_handle(dp_priv, todo->data);
 			break;
@@ -1184,27 +1170,21 @@ static irqreturn_t dp_display_irq_handler(int irq, void *dev_id)
 	return ret;
 }
 
-int dp_display_request_irq(struct msm_dp *dp_display)
+static int dp_display_request_irq(struct dp_display_private *dp)
 {
 	int rc = 0;
-	struct dp_display_private *dp;
-
-	if (!dp_display) {
-		DRM_ERROR("invalid input\n");
-		return -EINVAL;
-	}
+	struct platform_device *pdev = dp->dp_display.pdev;
 
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
-
-	dp->irq = irq_of_parse_and_map(dp->dp_display.pdev->dev.of_node, 0);
-	if (!dp->irq) {
+	dp->irq = platform_get_irq(pdev, 0);
+	if (dp->irq < 0) {
 		DRM_ERROR("failed to get irq\n");
-		return -EINVAL;
+		return dp->irq;
 	}
 
-	rc = devm_request_irq(dp_display->drm_dev->dev, dp->irq,
-			dp_display_irq_handler,
-			IRQF_TRIGGER_HIGH, "dp_display_isr", dp);
+	rc = devm_request_irq(&pdev->dev, dp->irq, dp_display_irq_handler,
+			      IRQF_TRIGGER_HIGH|IRQF_NO_AUTOEN,
+			      "dp_display_isr", dp);
+
 	if (rc < 0) {
 		DRM_ERROR("failed to request IRQ%u: %d\n",
 				dp->irq, rc);
@@ -1233,6 +1213,57 @@ static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pde
 	return NULL;
 }
 
+static int dp_display_probe_tail(struct device *dev)
+{
+	struct msm_dp *dp = dev_get_drvdata(dev);
+	int ret;
+
+	/*
+	 * External bridges are mandatory for eDP interfaces: one has to
+	 * provide at least an eDP panel (which gets wrapped into panel-bridge).
+	 *
+	 * For DisplayPort interfaces external bridges are optional, so
+	 * silently ignore an error if one is not present (-ENODEV).
+	 */
+	dp->next_bridge = devm_drm_of_get_bridge(&dp->pdev->dev, dp->pdev->dev.of_node, 1, 0);
+	if (IS_ERR(dp->next_bridge)) {
+		ret = PTR_ERR(dp->next_bridge);
+		dp->next_bridge = NULL;
+		if (dp->is_edp || ret != -ENODEV)
+			return ret;
+	}
+
+	ret = component_add(dev, &dp_display_comp_ops);
+	if (ret)
+		DRM_ERROR("component add failed, rc=%d\n", ret);
+
+	return ret;
+}
+
+static int dp_auxbus_done_probe(struct drm_dp_aux *aux)
+{
+	return dp_display_probe_tail(aux->dev);
+}
+
+static int dp_display_get_connector_type(struct platform_device *pdev,
+					 const struct msm_dp_desc *desc)
+{
+	struct device_node *node = pdev->dev.of_node;
+	struct device_node *aux_bus = of_get_child_by_name(node, "aux-bus");
+	struct device_node *panel = of_get_child_by_name(aux_bus, "panel");
+	int connector_type;
+
+	if (panel)
+		connector_type = DRM_MODE_CONNECTOR_eDP;
+	else
+		connector_type = DRM_MODE_SUBCONNECTOR_DisplayPort;
+
+	of_node_put(panel);
+	of_node_put(aux_bus);
+
+	return connector_type;
+}
+
 static int dp_display_probe(struct platform_device *pdev)
 {
 	int rc = 0;
@@ -1253,10 +1284,9 @@ static int dp_display_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	dp->dp_display.pdev = pdev;
-	dp->name = "drm_dp";
 	dp->id = desc->id;
-	dp->dp_display.connector_type = desc->connector_type;
-	dp->wide_bus_en = desc->wide_bus_en;
+	dp->dp_display.connector_type = dp_display_get_connector_type(pdev, desc);
+	dp->wide_bus_supported = desc->wide_bus_supported;
 	dp->dp_display.is_edp =
 		(dp->dp_display.connector_type == DRM_MODE_CONNECTOR_eDP);
 
@@ -1278,13 +1308,31 @@ static int dp_display_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, &dp->dp_display);
 
-	rc = component_add(&pdev->dev, &dp_display_comp_ops);
-	if (rc) {
-		DRM_ERROR("component add failed, rc=%d\n", rc);
-		dp_display_deinit_sub_modules(dp);
+	rc = devm_pm_runtime_enable(&pdev->dev);
+	if (rc)
+		goto err;
+
+	rc = dp_display_request_irq(dp);
+	if (rc)
+		goto err;
+
+	if (dp->dp_display.is_edp) {
+		rc = devm_of_dp_aux_populate_bus(dp->aux, dp_auxbus_done_probe);
+		if (rc) {
+			DRM_ERROR("eDP auxbus population failed, rc=%d\n", rc);
+			goto err;
+		}
+	} else {
+		rc = dp_display_probe_tail(&pdev->dev);
+		if (rc)
+			goto err;
 	}
 
 	return rc;
+
+err:
+	dp_display_deinit_sub_modules(dp);
+	return rc;
 }
 
 static void dp_display_remove(struct platform_device *pdev)
@@ -1293,113 +1341,50 @@ static void dp_display_remove(struct platform_device *pdev)
 
 	component_del(&pdev->dev, &dp_display_comp_ops);
 	dp_display_deinit_sub_modules(dp);
-
 	platform_set_drvdata(pdev, NULL);
 }
 
-static int dp_pm_resume(struct device *dev)
+static int dp_pm_runtime_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct msm_dp *dp_display = platform_get_drvdata(pdev);
-	struct dp_display_private *dp;
-	int sink_count = 0;
-
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
-
-	mutex_lock(&dp->event_mutex);
-
-	drm_dbg_dp(dp->drm_dev,
-		"Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
-		dp->dp_display.connector_type, dp->core_initialized,
-		dp->phy_initialized, dp_display->power_on);
-
-	/* start from disconnected state */
-	dp->hpd_state = ST_DISCONNECTED;
-
-	/* turn on dp ctrl/phy */
-	dp_display_host_init(dp);
-
-	if (dp_display->is_edp)
-		dp_catalog_ctrl_hpd_enable(dp->catalog);
+	struct dp_display_private *dp = dev_get_dp_display_private(dev);
 
-	if (dp_catalog_link_is_connected(dp->catalog)) {
-		/*
-		 * set sink to normal operation mode -- D0
-		 * before dpcd read
-		 */
-		dp_display_host_phy_init(dp);
-		dp_link_psm_config(dp->link, &dp->panel->link_info, false);
-		sink_count = drm_dp_read_sink_count(dp->aux);
-		if (sink_count < 0)
-			sink_count = 0;
+	disable_irq(dp->irq);
 
+	if (dp->dp_display.is_edp) {
 		dp_display_host_phy_exit(dp);
+		dp_catalog_ctrl_hpd_disable(dp->catalog);
 	}
-
-	dp->link->sink_count = sink_count;
-	/*
-	 * can not declared display is connected unless
-	 * HDMI cable is plugged in and sink_count of
-	 * dongle become 1
-	 * also only signal audio when disconnected
-	 */
-	if (dp->link->sink_count) {
-		dp->dp_display.is_connected = true;
-	} else {
-		dp->dp_display.is_connected = false;
-		dp_display_handle_plugged_change(dp_display, false);
-	}
-
-	drm_dbg_dp(dp->drm_dev,
-		"After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n",
-		dp->dp_display.connector_type, dp->link->sink_count,
-		dp->dp_display.is_connected, dp->core_initialized,
-		dp->phy_initialized, dp_display->power_on);
-
-	mutex_unlock(&dp->event_mutex);
+	dp_display_host_deinit(dp);
 
 	return 0;
 }
 
-static int dp_pm_suspend(struct device *dev)
+static int dp_pm_runtime_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct msm_dp *dp_display = platform_get_drvdata(pdev);
-	struct dp_display_private *dp;
-
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
-
-	mutex_lock(&dp->event_mutex);
-
-	drm_dbg_dp(dp->drm_dev,
-		"Before, type=%d core_inited=%d  phy_inited=%d power_on=%d\n",
-		dp->dp_display.connector_type, dp->core_initialized,
-		dp->phy_initialized, dp_display->power_on);
-
-	/* mainlink enabled */
-	if (dp_power_clk_status(dp->power, DP_CTRL_PM))
-		dp_ctrl_off_link_stream(dp->ctrl);
-
-	dp_display_host_phy_exit(dp);
-
-	/* host_init will be called at pm_resume */
-	dp_display_host_deinit(dp);
-
-	dp->hpd_state = ST_SUSPENDED;
-
-	drm_dbg_dp(dp->drm_dev,
-		"After, type=%d core_inited=%d phy_inited=%d power_on=%d\n",
-		dp->dp_display.connector_type, dp->core_initialized,
-		dp->phy_initialized, dp_display->power_on);
+	struct dp_display_private *dp = dev_get_dp_display_private(dev);
 
-	mutex_unlock(&dp->event_mutex);
+	/*
+	 * for eDP, host cotroller, HPD block and PHY are enabled here
+	 * but with HPD irq disabled
+	 *
+	 * for DP, only host controller is enabled here.
+	 * HPD block is enabled at dp_bridge_hpd_enable()
+	 * PHY will be enabled at plugin handler later
+	 */
+	dp_display_host_init(dp);
+	if (dp->dp_display.is_edp) {
+		dp_catalog_ctrl_hpd_enable(dp->catalog);
+		dp_display_host_phy_init(dp);
+	}
 
+	enable_irq(dp->irq);
 	return 0;
 }
 
 static const struct dev_pm_ops dp_pm_ops = {
-	.suspend = dp_pm_suspend,
-	.resume =  dp_pm_resume,
+	SET_RUNTIME_PM_OPS(dp_pm_runtime_suspend, dp_pm_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+				pm_runtime_force_resume)
 };
 
 static struct platform_driver dp_display_driver = {
@@ -1429,17 +1414,22 @@ void __exit msm_dp_unregister(void)
 	platform_driver_unregister(&dp_display_driver);
 }
 
-void msm_dp_irq_postinstall(struct msm_dp *dp_display)
+bool msm_dp_is_yuv_420_enabled(const struct msm_dp *dp_display,
+			       const struct drm_display_mode *mode)
 {
 	struct dp_display_private *dp;
-
-	if (!dp_display)
-		return;
+	const struct drm_display_info *info;
 
 	dp = container_of(dp_display, struct dp_display_private, dp_display);
+	info = &dp_display->connector->display_info;
 
-	if (!dp_display->is_edp)
-		dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
+	return dp->panel->vsc_sdp_supported && drm_mode_is_420_only(info, mode);
+}
+
+bool msm_dp_needs_periph_flush(const struct msm_dp *dp_display,
+			       const struct drm_display_mode *mode)
+{
+	return msm_dp_is_yuv_420_enabled(dp_display, mode);
 }
 
 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
@@ -1448,10 +1438,13 @@ bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 
 	dp = container_of(dp_display, struct dp_display_private, dp_display);
 
-	return dp->wide_bus_en;
+	if (dp->dp_mode.out_fmt_is_yuv_420)
+		return false;
+
+	return dp->wide_bus_supported;
 }
 
-void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
+void dp_display_debugfs_init(struct msm_dp *dp_display, struct dentry *root, bool is_edp)
 {
 	struct dp_display_private *dp;
 	struct device *dev;
@@ -1460,75 +1453,13 @@ void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
 	dp = container_of(dp_display, struct dp_display_private, dp_display);
 	dev = &dp->dp_display.pdev->dev;
 
-	dp->debug = dp_debug_get(dev, dp->panel,
-					dp->link, dp->dp_display.connector,
-					minor);
-	if (IS_ERR(dp->debug)) {
-		rc = PTR_ERR(dp->debug);
+	rc = dp_debug_init(dev, dp->panel, dp->link, dp->dp_display.connector, root, is_edp);
+	if (rc)
 		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
-		dp->debug = NULL;
-	}
-}
-
-static int dp_display_get_next_bridge(struct msm_dp *dp)
-{
-	int rc;
-	struct dp_display_private *dp_priv;
-	struct device_node *aux_bus;
-	struct device *dev;
-
-	dp_priv = container_of(dp, struct dp_display_private, dp_display);
-	dev = &dp_priv->dp_display.pdev->dev;
-	aux_bus = of_get_child_by_name(dev->of_node, "aux-bus");
-
-	if (aux_bus && dp->is_edp) {
-		dp_display_host_init(dp_priv);
-		dp_catalog_ctrl_hpd_enable(dp_priv->catalog);
-		dp_display_host_phy_init(dp_priv);
-
-		/*
-		 * The code below assumes that the panel will finish probing
-		 * by the time devm_of_dp_aux_populate_ep_devices() returns.
-		 * This isn't a great assumption since it will fail if the
-		 * panel driver is probed asynchronously but is the best we
-		 * can do without a bigger driver reorganization.
-		 */
-		rc = of_dp_aux_populate_bus(dp_priv->aux, NULL);
-		of_node_put(aux_bus);
-		if (rc)
-			goto error;
-	} else if (dp->is_edp) {
-		DRM_ERROR("eDP aux_bus not found\n");
-		return -ENODEV;
-	}
-
-	/*
-	 * External bridges are mandatory for eDP interfaces: one has to
-	 * provide at least an eDP panel (which gets wrapped into panel-bridge).
-	 *
-	 * For DisplayPort interfaces external bridges are optional, so
-	 * silently ignore an error if one is not present (-ENODEV).
-	 */
-	rc = devm_dp_parser_find_next_bridge(dp->drm_dev->dev, dp_priv->parser);
-	if (!dp->is_edp && rc == -ENODEV)
-		return 0;
-
-	if (!rc) {
-		dp->next_bridge = dp_priv->parser->next_bridge;
-		return 0;
-	}
-
-error:
-	if (dp->is_edp) {
-		of_dp_aux_depopulate_bus(dp_priv->aux);
-		dp_display_host_phy_exit(dp_priv);
-		dp_display_host_deinit(dp_priv);
-	}
-	return rc;
 }
 
 int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
-			struct drm_encoder *encoder)
+			struct drm_encoder *encoder, bool yuv_supported)
 {
 	struct dp_display_private *dp_priv;
 	int ret;
@@ -1537,16 +1468,6 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 
 	dp_priv = container_of(dp_display, struct dp_display_private, dp_display);
 
-	ret = dp_display_request_irq(dp_display);
-	if (ret) {
-		DRM_ERROR("request_irq failed, ret=%d\n", ret);
-		return ret;
-	}
-
-	ret = dp_display_get_next_bridge(dp_display);
-	if (ret)
-		return ret;
-
 	ret = dp_bridge_init(dp_display, dev, encoder);
 	if (ret) {
 		DRM_DEV_ERROR(dev->dev,
@@ -1554,7 +1475,7 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev,
 		return ret;
 	}
 
-	dp_display->connector = dp_drm_connector_init(dp_display, encoder);
+	dp_display->connector = dp_drm_connector_init(dp_display, encoder, yuv_supported);
 	if (IS_ERR(dp_display->connector)) {
 		ret = PTR_ERR(dp_display->connector);
 		DRM_DEV_ERROR(dev->dev,
@@ -1588,6 +1509,11 @@ void dp_bridge_atomic_enable(struct drm_bridge *drm_bridge,
 		dp_hpd_plug_handle(dp_display, 0);
 
 	mutex_lock(&dp_display->event_mutex);
+	if (pm_runtime_resume_and_get(&dp->pdev->dev)) {
+		DRM_ERROR("failed to pm_runtime_resume\n");
+		mutex_unlock(&dp_display->event_mutex);
+		return;
+	}
 
 	state = dp_display->hpd_state;
 	if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) {
@@ -1652,10 +1578,9 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge,
 	mutex_lock(&dp_display->event_mutex);
 
 	state = dp_display->hpd_state;
-	if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) {
-		mutex_unlock(&dp_display->event_mutex);
-		return;
-	}
+	if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED)
+		drm_dbg_dp(dp->drm_dev, "type=%d wrong hpd_state=%d\n",
+			   dp->connector_type, state);
 
 	dp_display_disable(dp_display);
 
@@ -1668,6 +1593,8 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge,
 	}
 
 	drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type);
+
+	pm_runtime_put_sync(&dp->pdev->dev);
 	mutex_unlock(&dp_display->event_mutex);
 }
 
@@ -1678,8 +1605,10 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
 	struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
 	struct msm_dp *dp = dp_bridge->dp_display;
 	struct dp_display_private *dp_display;
+	struct dp_panel *dp_panel;
 
 	dp_display = container_of(dp, struct dp_display_private, dp_display);
+	dp_panel = dp_display->panel;
 
 	memset(&dp_display->dp_mode, 0x0, sizeof(struct dp_display_mode));
 
@@ -1698,6 +1627,16 @@ void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
 
 	dp_display->dp_mode.h_active_low =
 		!!(dp_display->dp_mode.drm_mode.flags & DRM_MODE_FLAG_NHSYNC);
+
+	dp_display->dp_mode.out_fmt_is_yuv_420 =
+		drm_mode_is_420_only(&dp->connector->display_info, adjusted_mode) &&
+		dp_panel->vsc_sdp_supported;
+
+	/* populate wide_bus_support to different layers */
+	dp_display->ctrl->wide_bus_en =
+		dp_display->dp_mode.out_fmt_is_yuv_420 ? false : dp_display->wide_bus_supported;
+	dp_display->catalog->wide_bus_en =
+		dp_display->dp_mode.out_fmt_is_yuv_420 ? false : dp_display->wide_bus_supported;
 }
 
 void dp_bridge_hpd_enable(struct drm_bridge *bridge)
@@ -1706,7 +1645,21 @@ void dp_bridge_hpd_enable(struct drm_bridge *bridge)
 	struct msm_dp *dp_display = dp_bridge->dp_display;
 	struct dp_display_private *dp = container_of(dp_display, struct dp_display_private, dp_display);
 
+	/*
+	 * this is for external DP with hpd irq enabled case,
+	 * step-1: dp_pm_runtime_resume() enable dp host only
+	 * step-2: enable hdp block and have hpd irq enabled here
+	 * step-3: waiting for plugin irq while phy is not initialized
+	 * step-4: DP PHY is initialized at plugin handler before link training
+	 *
+	 */
 	mutex_lock(&dp->event_mutex);
+	if (pm_runtime_resume_and_get(&dp_display->pdev->dev)) {
+		DRM_ERROR("failed to resume power\n");
+		mutex_unlock(&dp->event_mutex);
+		return;
+	}
+
 	dp_catalog_ctrl_hpd_enable(dp->catalog);
 
 	/* enable HDP interrupts */
@@ -1728,6 +1681,8 @@ void dp_bridge_hpd_disable(struct drm_bridge *bridge)
 	dp_catalog_ctrl_hpd_disable(dp->catalog);
 
 	dp_display->internal_hpd = false;
+
+	pm_runtime_put_sync(&dp_display->pdev->dev);
 	mutex_unlock(&dp->event_mutex);
 }
 
@@ -1742,13 +1697,8 @@ void dp_bridge_hpd_notify(struct drm_bridge *bridge,
 	if (dp_display->internal_hpd)
 		return;
 
-	if (!dp->core_initialized) {
-		drm_dbg_dp(dp->drm_dev, "not initialized\n");
-		return;
-	}
-
-	if (!dp_display->is_connected && status == connector_status_connected)
+	if (!dp_display->link_ready && status == connector_status_connected)
 		dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0);
-	else if (dp_display->is_connected && status == connector_status_disconnected)
+	else if (dp_display->link_ready && status == connector_status_disconnected)
 		dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0);
 }