Merge tag 'drm-misc-next-2022-10-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 6.2:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
- connector: Send hotplug event on cleanup
- edid: logging/debug improvements
- plane_helper: Improve tests

Driver Changes:
- bridge:
  - it6505: Synchronization improvements
- panel:
  - panel-edp: Add INX N116BGE-EA2 C2 and C4 support.
- nouveau: Fix page-fault handling
- vmwgfx: fb and cursor refactoring, convert to generic hashtable

Signed-off-by: Dave Airlie <[email protected]>

From: Maxime Ripard <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/20221027073407.c2tlaczvzjrnzazi@houat

Author: airlied

Documentation/gpu/todo.rst

@@ -651,17 +651,6 @@ See drivers/gpu/drm/amd/display/TODO for tasks.
 
 Contact: Harry Wentland, Alex Deucher
 
-vmwgfx: Replace hashtable with Linux' implementation
-----------------------------------------------------
-
-The vmwgfx driver uses its own hashtable implementation. Replace the
-code with Linux' implementation and update the callers. It's mostly a
-refactoring task, but the interfaces are different.
-
-Contact: Zack Rusin, Thomas Zimmermann <[email protected]>
-
-Level: Intermediate
-
 Bootsplash
 ==========
 

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -6108,7 +6108,6 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
 				aconnector->base.name);
 
 		aconnector->base.force = DRM_FORCE_OFF;
-		aconnector->base.override_edid = false;
 		return;
 	}
 
@@ -6143,8 +6142,6 @@ static void handle_edid_mgmt(struct amdgpu_dm_connector *aconnector)
 		link->verified_link_cap.link_rate = LINK_RATE_HIGH2;
 	}
 
-
-	aconnector->base.override_edid = true;
 	create_eml_sink(aconnector);
 }
 

drivers/gpu/drm/bridge/ite-it6505.c

@@ -412,6 +412,7 @@ struct it6505 {
 	 * Mutex protects extcon and interrupt functions from interfering
 	 * each other.
 	 */
+	struct mutex irq_lock;
 	struct mutex extcon_lock;
 	struct mutex mode_lock; /* used to bridge_detect */
 	struct mutex aux_lock; /* used to aux data transfers */
@@ -440,7 +441,7 @@ struct it6505 {
 	enum hdcp_state hdcp_status;
 	struct delayed_work hdcp_work;
 	struct work_struct hdcp_wait_ksv_list;
-	struct completion wait_edid_complete;
+	struct completion extcon_completion;
 	u8 auto_train_retry;
 	bool hdcp_desired;
 	bool is_repeater;
@@ -725,28 +726,6 @@ static void it6505_calc_video_info(struct it6505 *it6505)
 			     DRM_MODE_ARG(&it6505->video_info));
 }
 
-static int it6505_drm_dp_link_probe(struct drm_dp_aux *aux,
-				    struct it6505_drm_dp_link *link)
-{
-	u8 values[3];
-	int err;
-
-	memset(link, 0, sizeof(*link));
-
-	err = drm_dp_dpcd_read(aux, DP_DPCD_REV, values, sizeof(values));
-	if (err < 0)
-		return err;
-
-	link->revision = values[0];
-	link->rate = drm_dp_bw_code_to_link_rate(values[1]);
-	link->num_lanes = values[2] & DP_MAX_LANE_COUNT_MASK;
-
-	if (values[2] & DP_ENHANCED_FRAME_CAP)
-		link->capabilities = DP_ENHANCED_FRAME_CAP;
-
-	return 0;
-}
-
 static int it6505_drm_dp_link_set_power(struct drm_dp_aux *aux,
 					struct it6505_drm_dp_link *link,
 					u8 mode)
@@ -1456,11 +1435,19 @@ static void it6505_parse_link_capabilities(struct it6505 *it6505)
 	int bcaps;
 
 	if (it6505->dpcd[0] == 0) {
-		it6505_aux_on(it6505);
-		it6505_get_dpcd(it6505, DP_DPCD_REV, it6505->dpcd,
-				ARRAY_SIZE(it6505->dpcd));
+		dev_err(dev, "DPCD is not initialized");
+		return;
 	}
 
+	memset(link, 0, sizeof(*link));
+
+	link->revision = it6505->dpcd[0];
+	link->rate = drm_dp_bw_code_to_link_rate(it6505->dpcd[1]);
+	link->num_lanes = it6505->dpcd[2] & DP_MAX_LANE_COUNT_MASK;
+
+	if (it6505->dpcd[2] & DP_ENHANCED_FRAME_CAP)
+		link->capabilities = DP_ENHANCED_FRAME_CAP;
+
 	DRM_DEV_DEBUG_DRIVER(dev, "DPCD Rev.: %d.%d",
 			     link->revision >> 4, link->revision & 0x0F);
 
@@ -2323,19 +2310,32 @@ static int it6505_process_hpd_irq(struct it6505 *it6505)
 static void it6505_irq_hpd(struct it6505 *it6505)
 {
 	struct device *dev = &it6505->client->dev;
+	int dp_sink_count;
 
 	it6505->hpd_state = it6505_get_sink_hpd_status(it6505);
 	DRM_DEV_DEBUG_DRIVER(dev, "hpd change interrupt, change to %s",
 			     it6505->hpd_state ? "high" : "low");
 
-	if (it6505->bridge.dev)
-		drm_helper_hpd_irq_event(it6505->bridge.dev);
-	DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count: %d",
-			     it6505->sink_count);
-
 	if (it6505->hpd_state) {
-		wait_for_completion_timeout(&it6505->wait_edid_complete,
-					    msecs_to_jiffies(6000));
+		wait_for_completion_timeout(&it6505->extcon_completion,
+					    msecs_to_jiffies(1000));
+		it6505_aux_on(it6505);
+		if (it6505->dpcd[0] == 0) {
+			it6505_get_dpcd(it6505, DP_DPCD_REV, it6505->dpcd,
+					ARRAY_SIZE(it6505->dpcd));
+			it6505_variable_config(it6505);
+			it6505_parse_link_capabilities(it6505);
+		}
+		it6505->auto_train_retry = AUTO_TRAIN_RETRY;
+
+		it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link,
+					     DP_SET_POWER_D0);
+		dp_sink_count = it6505_dpcd_read(it6505, DP_SINK_COUNT);
+		it6505->sink_count = DP_GET_SINK_COUNT(dp_sink_count);
+
+		DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count: %d",
+				     it6505->sink_count);
+
 		it6505_lane_termination_on(it6505);
 		it6505_lane_power_on(it6505);
 
@@ -2363,6 +2363,9 @@ static void it6505_irq_hpd(struct it6505 *it6505)
 		it6505_lane_off(it6505);
 		it6505_link_reset_step_train(it6505);
 	}
+
+	if (it6505->bridge.dev)
+		drm_helper_hpd_irq_event(it6505->bridge.dev);
 }
 
 static void it6505_irq_hpd_irq(struct it6505 *it6505)
@@ -2491,8 +2494,7 @@ static irqreturn_t it6505_int_threaded_handler(int unused, void *data)
 	};
 	int int_status[3], i;
 
-	msleep(100);
-	mutex_lock(&it6505->extcon_lock);
+	mutex_lock(&it6505->irq_lock);
 
 	if (it6505->enable_drv_hold || !it6505->powered)
 		goto unlock;
@@ -2522,7 +2524,7 @@ static irqreturn_t it6505_int_threaded_handler(int unused, void *data)
 	}
 
 unlock:
-	mutex_unlock(&it6505->extcon_lock);
+	mutex_unlock(&it6505->irq_lock);
 
 	return IRQ_HANDLED;
 }
@@ -2625,26 +2627,14 @@ static enum drm_connector_status it6505_detect(struct it6505 *it6505)
 		goto unlock;
 
 	if (it6505->enable_drv_hold) {
-		status = it6505_get_sink_hpd_status(it6505) ?
-					connector_status_connected :
-					connector_status_disconnected;
+		status = it6505->hpd_state ? connector_status_connected :
+					     connector_status_disconnected;
 		goto unlock;
 	}
 
-	if (it6505_get_sink_hpd_status(it6505)) {
-		it6505_aux_on(it6505);
-		it6505_drm_dp_link_probe(&it6505->aux, &it6505->link);
+	if (it6505->hpd_state) {
 		it6505_drm_dp_link_set_power(&it6505->aux, &it6505->link,
 					     DP_SET_POWER_D0);
-		it6505->auto_train_retry = AUTO_TRAIN_RETRY;
-
-		if (it6505->dpcd[0] == 0) {
-			it6505_get_dpcd(it6505, DP_DPCD_REV, it6505->dpcd,
-					ARRAY_SIZE(it6505->dpcd));
-			it6505_variable_config(it6505);
-			it6505_parse_link_capabilities(it6505);
-		}
-
 		dp_sink_count = it6505_dpcd_read(it6505, DP_SINK_COUNT);
 		it6505->sink_count = DP_GET_SINK_COUNT(dp_sink_count);
 		DRM_DEV_DEBUG_DRIVER(dev, "it6505->sink_count:%d branch:%d",
@@ -2711,9 +2701,12 @@ static void it6505_extcon_work(struct work_struct *work)
 		 */
 		if (ret)
 			it6505_poweron(it6505);
+
+		complete_all(&it6505->extcon_completion);
 	} else {
 		DRM_DEV_DEBUG_DRIVER(dev, "start to power off");
 		pm_runtime_put_sync(dev);
+		reinit_completion(&it6505->extcon_completion);
 
 		drm_helper_hpd_irq_event(it6505->bridge.dev);
 		memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
@@ -2871,10 +2864,7 @@ static int it6505_bridge_attach(struct drm_bridge *bridge,
 	}
 
 	/* Register aux channel */
-	it6505->aux.name = "DP-AUX";
-	it6505->aux.dev = dev;
 	it6505->aux.drm_dev = bridge->dev;
-	it6505->aux.transfer = it6505_aux_transfer;
 
 	ret = drm_dp_aux_register(&it6505->aux);
 
@@ -3287,6 +3277,7 @@ static int it6505_i2c_probe(struct i2c_client *client,
 	if (!it6505)
 		return -ENOMEM;
 
+	mutex_init(&it6505->irq_lock);
 	mutex_init(&it6505->extcon_lock);
 	mutex_init(&it6505->mode_lock);
 	mutex_init(&it6505->aux_lock);
@@ -3342,7 +3333,7 @@ static int it6505_i2c_probe(struct i2c_client *client,
 	INIT_WORK(&it6505->link_works, it6505_link_training_work);
 	INIT_WORK(&it6505->hdcp_wait_ksv_list, it6505_hdcp_wait_ksv_list);
 	INIT_DELAYED_WORK(&it6505->hdcp_work, it6505_hdcp_work);
-	init_completion(&it6505->wait_edid_complete);
+	init_completion(&it6505->extcon_completion);
 	memset(it6505->dpcd, 0, sizeof(it6505->dpcd));
 	it6505->powered = false;
 	it6505->enable_drv_hold = DEFAULT_DRV_HOLD;
@@ -3354,6 +3345,11 @@ static int it6505_i2c_probe(struct i2c_client *client,
 	debugfs_init(it6505);
 	pm_runtime_enable(dev);
 
+	it6505->aux.name = "DP-AUX";
+	it6505->aux.dev = dev;
+	it6505->aux.transfer = it6505_aux_transfer;
+	drm_dp_aux_init(&it6505->aux);
+
 	it6505->bridge.funcs = &it6505_bridge_funcs;
 	it6505->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
 	it6505->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |

drivers/gpu/drm/drm_client.c

@@ -235,7 +235,7 @@ static void drm_client_buffer_delete(struct drm_client_buffer *buffer)
 {
 	struct drm_device *dev = buffer->client->dev;
 
-	drm_gem_vunmap(buffer->gem, &buffer->map);
+	drm_gem_vunmap_unlocked(buffer->gem, &buffer->map);
 
 	if (buffer->gem)
 		drm_gem_object_put(buffer->gem);

drivers/gpu/drm/drm_connector.c

@@ -274,6 +274,7 @@ static int __drm_connector_init(struct drm_device *dev,
 	INIT_LIST_HEAD(&connector->probed_modes);
 	INIT_LIST_HEAD(&connector->modes);
 	mutex_init(&connector->mutex);
+	mutex_init(&connector->edid_override_mutex);
 	connector->edid_blob_ptr = NULL;
 	connector->epoch_counter = 0;
 	connector->tile_blob_ptr = NULL;
@@ -582,6 +583,9 @@ void drm_connector_cleanup(struct drm_connector *connector)
 	mutex_destroy(&connector->mutex);
 
 	memset(connector, 0, sizeof(*connector));
+
+	if (dev->registered)
+		drm_sysfs_hotplug_event(dev);
 }
 EXPORT_SYMBOL(drm_connector_cleanup);
 

drivers/gpu/drm/drm_crtc_internal.h

@@ -56,9 +56,10 @@ struct drm_plane;
 struct drm_plane_state;
 struct drm_property;
 struct edid;
+struct fwnode_handle;
 struct kref;
+struct seq_file;
 struct work_struct;
-struct fwnode_handle;
 
 /* drm_crtc.c */
 int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
@@ -286,5 +287,17 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
 
 /* drm_edid.c */
 void drm_mode_fixup_1366x768(struct drm_display_mode *mode);
+int drm_edid_override_show(struct drm_connector *connector, struct seq_file *m);
 int drm_edid_override_set(struct drm_connector *connector, const void *edid, size_t size);
 int drm_edid_override_reset(struct drm_connector *connector);
+
+/* drm_edid_load.c */
+#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
+const struct drm_edid *drm_edid_load_firmware(struct drm_connector *connector);
+#else
+static inline const struct drm_edid *
+drm_edid_load_firmware(struct drm_connector *connector)
+{
+	return ERR_PTR(-ENOENT);
+}
+#endif

drivers/gpu/drm/drm_debugfs.c

@@ -328,13 +328,7 @@ static ssize_t connector_write(struct file *file, const char __user *ubuf,
 
 static int edid_show(struct seq_file *m, void *data)
 {
-	struct drm_connector *connector = m->private;
-	struct drm_property_blob *edid = connector->edid_blob_ptr;
-
-	if (connector->override_edid && edid)
-		seq_write(m, edid->data, edid->length);
-
-	return 0;
+	return drm_edid_override_show(m->private, m);
 }
 
 static int edid_open(struct inode *inode, struct file *file)