Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "This contains two major new drivers:

   - imagination is a first driver for Imagination Technologies devices,
     it only covers very specific devices, but there is hope to grow it

   - xe is a reboot of the i915 GPU (shares display) side using a more
     upstream focused development model, and trying to maximise code
     sharing. It's not enabled for any hw by default, and will hopefully
     get switched on for Intel's Lunarlake.

  This also drops a bunch of the old UMS ioctls. It's been dead long
  enough.

  amdgpu has a bunch of new color management code that is being used in
  the Steam Deck.

  amdgpu also has a new ACPI WBRF interaction to help avoid radio
  interference.

  Otherwise it's the usual lots of changes in lots of places.

  Detailed summary:

  new drivers:
   - imagination - new driver for Imagination Technologies GPU
   - xe - new driver for Intel GPUs using core drm concepts

  core:
   - add CLOSE_FB ioctl
   - remove old UMS ioctls
   - increase max objects to accomodate AMD color mgmt

  encoder:
   - create per-encoder debugfs directory

  edid:
   - split out drm_eld
   - SAD helpers
   - drop edid_firmware module parameter

  format-helper:
   - cache format conversion buffers

  sched:
   - move from kthread to workqueue
   - rename some internals
   - implement dynamic job-flow control

  gpuvm:
   - provide more features to handle GEM objects

  client:
   - don't acquire module reference

  displayport:
   - add mst path property documentation

  fdinfo:
   - alignment fix

  dma-buf:
   - add fence timestamp helper
   - add fence deadline support

  bridge:
   - transparent aux-bridge for DP/USB-C
   - lt8912b: add suspend/resume support and power regulator support

  panel:
   - edp: AUO B116XTN02, BOE NT116WHM-N21,836X2, NV116WHM-N49
   - chromebook panel support
   - elida-kd35t133: rework pm
   - powkiddy RK2023 panel
   - himax-hx8394: drop prepare/unprepare and shutdown logic
   - BOE BP101WX1-100, Powkiddy X55, Ampire AM8001280G
   - Evervision VGG644804, SDC ATNA45AF01
   - nv3052c: register docs, init sequence fixes, fascontek FS035VG158
   - st7701: Anbernic RG-ARC support
   - r63353 panel controller
   - Ilitek ILI9805 panel controller
   - AUO G156HAN04.0

  simplefb:
   - support memory regions
   - support power domains

  amdgpu:
   - add new 64-bit sequence number infrastructure
   - add AMD specific color management
   - ACPI WBRF support for RF interference handling
   - GPUVM updates
   - RAS updates
   - DCN 3.5 updates
   - Rework PCIe link speed handling
   - Document GPU reset types
   - DMUB fixes
   - eDP fixes
   - NBIO 7.9/7.11 updates
   - SubVP updates
   - XGMI PCIe state dumping for aqua vanjaram
   - GFX11 golden register updates
   - enable tunnelling on high pri compute

  amdkfd:
   - Migrate TLB flushing logic to amdgpu
   - Trap handler fixes
   - Fix restore workers handling on suspend/resume
   - Fix possible memory leak in pqm_uninit()
   - support import/export of dma-bufs using GEM handles

  radeon:
   - fix possible overflows in command buffer checking
   - check for errors in ring_lock

  i915:
   - reorg display code for reuse in xe driver
   - fdinfo memory stats printing
   - DP MST bandwidth mgmt improvements
   - DP panel replay enabling
   - MTL C20 phy state verification
   - MTL DP DSC fractional bpp support
   - Audio fastset support
   - use dma_fence interfaces instead of i915_sw_fence
   - Separate gem and display code
   - AUX register macro refactoring
   - Separate display module/device parameters
   - Move display capabilities debugfs under display
   - Makefile cleanups
   - Register cleanups
   - Move display lock inits under display/
   - VLV/CHV DPIO PHY register and interface refactoring
   - DSI VBT sequence refactoring
   - C10/C20 PHY PLL hardware readout
   - DPLL code cleanups
   - Cleanup PXP plane protection checks
   - Improve display debug msgs
   - PSR selective fetch fixes/improvements
   - DP MST fixes
   - Xe2LPD FBC restrictions removed
   - DGFX uses direct VBT pin mapping
   - more MTL WAs
   - fix MTL eDP bug
   - eliminate use of kmap_atomic

  habanalabs:
   - sysfs entry to identify a device minor id with debugfs path
   - sysfs entry to expose device module id
   - add signed device info retrieval through INFO ioctl
   - add Gaudi2C device support
   - pcie reset prepare/done hooks

  msm:
   - Add support for SDM670, SM8650
   - Handle the CFG interconnect to fix the obscure hangs / timeouts
   - Kconfig fix for QMP dependency
   - use managed allocators
   - DPU: SDM670, SM8650 support
   - DPU: Enable SmartDMA on SM8350 and SM8450
   - DP: enable runtime PM support
   - GPU: add metadata UAPI
   - GPU: move devcoredumps to GPU device
   - GPU: convert to drm_exec

  ivpu:
   - update FW API
   - new debugfs file
   - a new NOP job submission test mode
   - improve suspend/resume
   - PM improvements
   - MMU PT optimizations
   - firmware profile frequency support
   - support for uncached buffers
   - switch to gem shmem helpers
   - replace kthread with threaded irqs

  rockchip:
   - rk3066_hdmi: convert to atomic
   - vop2: support nv20 and nv30
   - rk3588 support

  mediatek:
   - use devm_platform_ioremap_resource
   - stop using iommu_present
   - MT8188 VDOSYS1 display support

  panfrost:
   - PM improvements
   - improve interrupt handling as poweroff

  qaic:
   - allow to run with single MSI
   - support host/device time sync
   - switch to persistent DRM devices

  exynos:
   - fix potential error pointer dereference
   - fix wrong error checking
   - add missing call to drm_atomic_helper_shutdown

  omapdrm:
   - dma-fence lockdep annotation fix

  tidss:
   - dma-fence lockdep annotation fix
   - support for AM62A7

  v3d:
   - BCM2712 - rpi5 support
   - fdinfo + gputop support
   - uapi for CPU job handling

  virtio-gpu:
   - add context debug name"

* tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm: (2340 commits)
  drm/amd/display: Allow z8/z10 from driver
  drm/amd/display: fix bandwidth validation failure on DCN 2.1
  drm/amdgpu: apply the RV2 system aperture fix to RN/CZN as well
  drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm
  drm/amd/display: Fix recent checkpatch errors in amdgpu_dm
  Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
  drm/amd/display: avoid stringop-overflow warnings for dp_decide_lane_settings()
  drm/amd/display: Fix power_helpers.c codestyle
  drm/amd/display: Fix hdcp_log.h codestyle
  drm/amd/display: Fix hdcp2_execution.c codestyle
  drm/amd/display: Fix hdcp_psp.h codestyle
  drm/amd/display: Fix freesync.c codestyle
  drm/amd/display: Fix hdcp_psp.c codestyle
  drm/amd/display: Fix hdcp1_execution.c codestyle
  drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
  drm/amdkfd: Fix iterator used outside loop in 'kfd_add_peer_prop()'
  drm/amdgpu: Drop 'fence' check in 'to_amdgpu_amdkfd_fence()'
  drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
  drm/amdgpu: Fix '*fw' from request_firmware() not released in 'amdgpu_ucode_request()'
  drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'
  ...

1 files changed, 146 insertions, 223 deletions

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 1b88fb52726f..d37d599aec27 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -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,
@@ -170,6 +168,11 @@ static const struct msm_dp_desc sm8350_dp_descs[] = {
 	{}
 };
 
+static const struct msm_dp_desc sm8650_dp_descs[] = {
+	{ .io_start = 0x0af54000, .id = MSM_DP_CONTROLLER_0, .connector_type = DRM_MODE_CONNECTOR_DisplayPort },
+	{}
+};
+
 static const struct of_device_id dp_dt_match[] = {
 	{ .compatible = "qcom,sc7180-dp", .data = &sc7180_dp_descs },
 	{ .compatible = "qcom,sc7280-dp", .data = &sc7280_dp_descs },
@@ -180,6 +183,7 @@ static const struct of_device_id dp_dt_match[] = {
 	{ .compatible = "qcom,sc8280xp-edp", .data = &sc8280xp_edp_descs },
 	{ .compatible = "qcom,sdm845-dp", .data = &sc7180_dp_descs },
 	{ .compatible = "qcom,sm8350-dp", .data = &sm8350_dp_descs },
+	{ .compatible = "qcom,sm8650-dp", .data = &sm8650_dp_descs },
 	{}
 };
 
@@ -275,11 +279,6 @@ 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 +289,6 @@ 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 +313,10 @@ 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;
@@ -340,27 +329,10 @@ static const struct component_ops dp_display_comp_ops = {
 	.unbind = dp_display_unbind,
 };
 
-static void dp_display_send_hpd_event(struct msm_dp *dp_display)
-{
-	struct dp_display_private *dp;
-	struct drm_connector *connector;
-
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
-
-	connector = dp->dp_display.connector;
-	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)) {
-		drm_dbg_dp(dp->drm_dev, "HPD already %s\n",
-				(hpd ? "on" : "off"));
-		return 0;
-	}
+	struct drm_bridge *bridge = dp->dp_display.bridge;
 
 	/* reset video pattern flag on disconnect */
 	if (!hpd) {
@@ -372,11 +344,11 @@ static int dp_display_send_hpd_notification(struct dp_display_private *dp,
 							 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);
-	dp_display_send_hpd_event(&dp->dp_display);
+	drm_bridge_hpd_notify(bridge, dp->dp_display.link_ready);
 
 	return 0;
 }
@@ -575,6 +547,7 @@ 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;
 
 	mutex_lock(&dp->event_mutex);
 
@@ -582,7 +555,7 @@ 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;
 	}
@@ -599,7 +572,14 @@ 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;
 	} else {
@@ -631,6 +611,7 @@ 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;
 
 	mutex_lock(&dp->event_mutex);
 
@@ -681,6 +662,7 @@ 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;
 }
@@ -696,7 +678,7 @@ 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;
 	}
@@ -720,7 +702,6 @@ 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);
@@ -918,7 +899,7 @@ 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;
@@ -1108,9 +1089,6 @@ 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;
@@ -1189,27 +1167,21 @@ 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);
@@ -1238,6 +1210,29 @@ static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pde
 	return NULL;
 }
 
+static int dp_display_get_next_bridge(struct msm_dp *dp);
+
+static int dp_display_probe_tail(struct device *dev)
+{
+	struct msm_dp *dp = dev_get_drvdata(dev);
+	int ret;
+
+	ret = dp_display_get_next_bridge(dp);
+	if (ret)
+		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_probe(struct platform_device *pdev)
 {
 	int rc = 0;
@@ -1271,6 +1266,18 @@ static int dp_display_probe(struct platform_device *pdev)
 		return -EPROBE_DEFER;
 	}
 
+	rc = dp->parser->parse(dp->parser);
+	if (rc) {
+		DRM_ERROR("device tree parsing failed\n");
+		goto err;
+	}
+
+	rc = dp_power_client_init(dp->power);
+	if (rc) {
+		DRM_ERROR("Power client create failed\n");
+		goto err;
+	}
+
 	/* setup event q */
 	mutex_init(&dp->event_mutex);
 	init_waitqueue_head(&dp->event_q);
@@ -1283,13 +1290,31 @@ 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)
@@ -1298,113 +1323,50 @@ 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 = {
@@ -1434,19 +1396,6 @@ void __exit msm_dp_unregister(void)
 	platform_driver_unregister(&dp_display_driver);
 }
 
-void msm_dp_irq_postinstall(struct msm_dp *dp_display)
-{
-	struct dp_display_private *dp;
-
-	if (!dp_display)
-		return;
-
-	dp = container_of(dp_display, struct dp_display_private, dp_display);
-
-	if (!dp_display->is_edp)
-		dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0);
-}
-
 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 {
 	struct dp_display_private *dp;
@@ -1456,7 +1405,7 @@ bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 	return dp->wide_bus_en;
 }
 
-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;
@@ -1467,7 +1416,7 @@ void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
 
 	dp->debug = dp_debug_get(dev, dp->panel,
 					dp->link, dp->dp_display.connector,
-					minor);
+					root, is_edp);
 	if (IS_ERR(dp->debug)) {
 		rc = PTR_ERR(dp->debug);
 		DRM_ERROR("failed to initialize debug, rc = %d\n", rc);
@@ -1479,33 +1428,8 @@ 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
@@ -1514,21 +1438,13 @@ static int dp_display_get_next_bridge(struct msm_dp *dp)
 	 * 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);
+	rc = devm_dp_parser_find_next_bridge(&dp->pdev->dev, dp_priv->parser);
 	if (!dp->is_edp && rc == -ENODEV)
 		return 0;
 
-	if (!rc) {
+	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;
 }
 
@@ -1542,16 +1458,6 @@ 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,
@@ -1593,6 +1499,11 @@ 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) {
@@ -1657,10 +1568,9 @@ 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);
 
@@ -1673,6 +1583,8 @@ 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);
 }
 
@@ -1711,7 +1623,21 @@ 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 */
@@ -1733,6 +1659,8 @@ 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);
 }
 
@@ -1747,13 +1675,8 @@ 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);
 }