diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 8e464fa..387919a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -39,31 +39,6 @@
 #include "dpu_core_perf.h"
 #include "dpu_trace.h"
 
-struct dpu_crtc_irq_info {
-	struct dpu_irq_callback irq;
-	u32 event;
-	int (*func)(struct drm_crtc *crtc, bool en,
-			struct dpu_irq_callback *irq);
-	struct list_head list;
-};
-
-struct dpu_crtc_custom_events {
-	u32 event;
-	int (*func)(struct drm_crtc *crtc, bool en,
-			struct dpu_irq_callback *irq);
-};
-
-static int dpu_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm,
-	bool en, struct dpu_irq_callback *ad_irq);
-static int dpu_crtc_idle_interrupt_handler(struct drm_crtc *crtc_drm,
-	bool en, struct dpu_irq_callback *idle_irq);
-
-static struct dpu_crtc_custom_events custom_events[] = {
-	{DRM_EVENT_AD_BACKLIGHT, dpu_cp_ad_interrupt},
-	{DRM_EVENT_CRTC_POWER, dpu_crtc_power_interrupt_handler},
-	{DRM_EVENT_IDLE_NOTIFY, dpu_crtc_idle_interrupt_handler}
-};
-
 /* layer mixer index on dpu_crtc */
 #define LEFT_MIXER 0
 #define RIGHT_MIXER 1
@@ -2455,9 +2430,6 @@ static void dpu_crtc_handle_power_event(u32 event_type, void *arg)
 	struct drm_encoder *encoder;
 	struct dpu_crtc_mixer *m;
 	u32 i, misr_status;
-	unsigned long flags;
-	struct dpu_crtc_irq_info *node = NULL;
-	int ret = 0;
 
 	if (!crtc) {
 		DPU_ERROR("invalid crtc\n");
@@ -2479,17 +2451,6 @@ static void dpu_crtc_handle_power_event(u32 event_type, void *arg)
 			dpu_encoder_virt_restore(encoder);
 		}
 
-		spin_lock_irqsave(&dpu_crtc->spin_lock, flags);
-		list_for_each_entry(node, &dpu_crtc->user_event_list, list) {
-			ret = 0;
-			if (node->func)
-				ret = node->func(crtc, true, &node->irq);
-			if (ret)
-				DPU_ERROR("%s failed to enable event %x\n",
-						dpu_crtc->name, node->event);
-		}
-		spin_unlock_irqrestore(&dpu_crtc->spin_lock, flags);
-
 		dpu_cp_crtc_post_ipc(crtc);
 
 		for (i = 0; i < dpu_crtc->num_mixers; ++i) {
@@ -2514,18 +2475,6 @@ static void dpu_crtc_handle_power_event(u32 event_type, void *arg)
 							dpu_crtc->misr_data[i];
 		}
 
-		spin_lock_irqsave(&dpu_crtc->spin_lock, flags);
-		node = NULL;
-		list_for_each_entry(node, &dpu_crtc->user_event_list, list) {
-			ret = 0;
-			if (node->func)
-				ret = node->func(crtc, false, &node->irq);
-			if (ret)
-				DPU_ERROR("%s failed to disable event %x\n",
-						dpu_crtc->name, node->event);
-		}
-		spin_unlock_irqrestore(&dpu_crtc->spin_lock, flags);
-
 		dpu_cp_crtc_pre_ipc(crtc);
 		break;
 	case DPU_POWER_EVENT_POST_DISABLE:
@@ -2553,8 +2502,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc)
 	struct drm_display_mode *mode;
 	struct drm_encoder *encoder;
 	struct msm_drm_private *priv;
-	unsigned long flags;
-	struct dpu_crtc_irq_info *node = NULL;
 	struct drm_event event;
 	u32 power_on;
 	int ret;
@@ -2614,17 +2561,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc)
 		atomic_set(&dpu_crtc->frame_pending, 0);
 	}
 
-	spin_lock_irqsave(&dpu_crtc->spin_lock, flags);
-	list_for_each_entry(node, &dpu_crtc->user_event_list, list) {
-		ret = 0;
-		if (node->func)
-			ret = node->func(crtc, false, &node->irq);
-		if (ret)
-			DPU_ERROR("%s failed to disable event %x\n",
-					dpu_crtc->name, node->event);
-	}
-	spin_unlock_irqrestore(&dpu_crtc->spin_lock, flags);
-
 	dpu_core_perf_crtc_update(crtc, 0, true);
 
 	drm_for_each_encoder(encoder, crtc->dev) {
@@ -2656,8 +2592,6 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
 	struct dpu_crtc *dpu_crtc;
 	struct drm_encoder *encoder;
 	struct msm_drm_private *priv;
-	unsigned long flags;
-	struct dpu_crtc_irq_info *node = NULL;
 	struct drm_event event;
 	u32 power_on;
 	int ret;
@@ -2709,17 +2643,6 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
 
 	mutex_unlock(&dpu_crtc->crtc_lock);
 
-	spin_lock_irqsave(&dpu_crtc->spin_lock, flags);
-	list_for_each_entry(node, &dpu_crtc->user_event_list, list) {
-		ret = 0;
-		if (node->func)
-			ret = node->func(crtc, true, &node->irq);
-		if (ret)
-			DPU_ERROR("%s failed to enable event %x\n",
-				dpu_crtc->name, node->event);
-	}
-	spin_unlock_irqrestore(&dpu_crtc->spin_lock, flags);
-
 	dpu_crtc->power_event = dpu_power_handle_register_event(
 		&priv->phandle,
 		DPU_POWER_EVENT_POST_ENABLE | DPU_POWER_EVENT_POST_DISABLE |
@@ -3995,7 +3918,7 @@ struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane)
 	init_completion(&dpu_crtc->frame_done_comp);
 
 	INIT_LIST_HEAD(&dpu_crtc->frame_event_list);
-	INIT_LIST_HEAD(&dpu_crtc->user_event_list);
+
 	for (i = 0; i < ARRAY_SIZE(dpu_crtc->frame_events); i++) {
 		INIT_LIST_HEAD(&dpu_crtc->frame_events[i].list);
 		list_add(&dpu_crtc->frame_events[i].list,
@@ -4039,142 +3962,3 @@ struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane)
 	DPU_DEBUG("%s: successfully initialized crtc\n", dpu_crtc->name);
 	return crtc;
 }
-
-static int _dpu_crtc_event_enable(struct dpu_kms *kms,
-		struct drm_crtc *crtc_drm, u32 event)
-{
-	struct dpu_crtc *crtc = NULL;
-	struct dpu_crtc_irq_info *node;
-	struct msm_drm_private *priv;
-	unsigned long flags;
-	bool found = false;
-	int ret, i = 0;
-
-	crtc = to_dpu_crtc(crtc_drm);
-	spin_lock_irqsave(&crtc->spin_lock, flags);
-	list_for_each_entry(node, &crtc->user_event_list, list) {
-		if (node->event == event) {
-			found = true;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&crtc->spin_lock, flags);
-
-	/* event already enabled */
-	if (found)
-		return 0;
-
-	node = NULL;
-	for (i = 0; i < ARRAY_SIZE(custom_events); i++) {
-		if (custom_events[i].event == event &&
-			custom_events[i].func) {
-			node = kzalloc(sizeof(*node), GFP_KERNEL);
-			if (!node)
-				return -ENOMEM;
-			node->event = event;
-			INIT_LIST_HEAD(&node->list);
-			node->func = custom_events[i].func;
-			node->event = event;
-			break;
-		}
-	}
-
-	if (!node) {
-		DPU_ERROR("unsupported event %x\n", event);
-		return -EINVAL;
-	}
-
-	priv = kms->dev->dev_private;
-	ret = 0;
-	if (crtc_drm->enabled) {
-		dpu_power_resource_enable(&priv->phandle, kms->core_client,
-				true);
-		INIT_LIST_HEAD(&node->irq.list);
-		ret = node->func(crtc_drm, true, &node->irq);
-		dpu_power_resource_enable(&priv->phandle, kms->core_client,
-				false);
-	}
-
-	if (!ret) {
-		spin_lock_irqsave(&crtc->spin_lock, flags);
-		list_add_tail(&node->list, &crtc->user_event_list);
-		spin_unlock_irqrestore(&crtc->spin_lock, flags);
-	} else {
-		kfree(node);
-	}
-
-	return ret;
-}
-
-static int _dpu_crtc_event_disable(struct dpu_kms *kms,
-		struct drm_crtc *crtc_drm, u32 event)
-{
-	struct dpu_crtc *crtc = NULL;
-	struct dpu_crtc_irq_info *node = NULL;
-	struct msm_drm_private *priv;
-	unsigned long flags;
-	bool found = false;
-	int ret;
-
-	crtc = to_dpu_crtc(crtc_drm);
-	spin_lock_irqsave(&crtc->spin_lock, flags);
-	list_for_each_entry(node, &crtc->user_event_list, list) {
-		if (node->event == event) {
-			list_del(&node->list);
-			found = true;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&crtc->spin_lock, flags);
-
-	/* event already disabled */
-	if (!found)
-		return 0;
-
-	/**
-	 * crtc is disabled interrupts are cleared remove from the list,
-	 * no need to disable/de-register.
-	 */
-	if (!crtc_drm->enabled) {
-		kfree(node);
-		return 0;
-	}
-	priv = kms->dev->dev_private;
-	dpu_power_resource_enable(&priv->phandle, kms->core_client, true);
-	ret = node->func(crtc_drm, false, &node->irq);
-	dpu_power_resource_enable(&priv->phandle, kms->core_client, false);
-	return ret;
-}
-
-int dpu_crtc_register_custom_event(struct dpu_kms *kms,
-		struct drm_crtc *crtc_drm, u32 event, bool en)
-{
-	struct dpu_crtc *crtc = NULL;
-	int ret;
-
-	crtc = to_dpu_crtc(crtc_drm);
-	if (!crtc || !kms || !kms->dev) {
-		DRM_ERROR("invalid dpu_crtc %pK kms %pK dev %pK\n", crtc,
-			kms, ((kms) ? (kms->dev) : NULL));
-		return -EINVAL;
-	}
-
-	if (en)
-		ret = _dpu_crtc_event_enable(kms, crtc_drm, event);
-	else
-		ret = _dpu_crtc_event_disable(kms, crtc_drm, event);
-
-	return ret;
-}
-
-static int dpu_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm,
-	bool en, struct dpu_irq_callback *irq)
-{
-	return 0;
-}
-
-static int dpu_crtc_idle_interrupt_handler(struct drm_crtc *crtc_drm,
-	bool en, struct dpu_irq_callback *irq)
-{
-	return 0;
-}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
index 8756b2b..9304058 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h
@@ -223,7 +223,6 @@ struct dpu_crtc {
 	struct list_head dirty_list;
 	struct list_head ad_dirty;
 	struct list_head ad_active;
-	struct list_head user_event_list;
 
 	struct mutex crtc_lock;
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index f6fea21..57d808d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -90,8 +90,6 @@
 
 static int dpu_kms_hw_init(struct msm_kms *kms);
 static int _dpu_kms_mmu_destroy(struct dpu_kms *dpu_kms);
-static int _dpu_kms_register_events(struct msm_kms *kms,
-		struct drm_mode_object *obj, u32 event, bool en);
 bool dpu_is_custom_client(void)
 {
 	return dpucustom;
@@ -1745,7 +1743,6 @@ static int dpu_kms_pm_resume(struct device *dev)
 	.pm_suspend      = dpu_kms_pm_suspend,
 	.pm_resume       = dpu_kms_pm_resume,
 	.destroy         = dpu_kms_destroy,
-	.register_events = _dpu_kms_register_events,
 	.get_address_space = _dpu_kms_get_address_space,
 	.postopen = _dpu_kms_post_open,
 };
@@ -2162,31 +2159,3 @@ struct msm_kms *dpu_kms_init(struct drm_device *dev)
 	return &dpu_kms->base;
 }
 
-static int _dpu_kms_register_events(struct msm_kms *kms,
-		struct drm_mode_object *obj, u32 event, bool en)
-{
-	int ret = 0;
-	struct drm_crtc *crtc = NULL;
-	struct drm_connector *conn = NULL;
-	struct dpu_kms *dpu_kms = NULL;
-
-	if (!kms || !obj) {
-		DPU_ERROR("invalid argument kms %pK obj %pK\n", kms, obj);
-		return -EINVAL;
-	}
-
-	dpu_kms = to_dpu_kms(kms);
-	switch (obj->type) {
-	case DRM_MODE_OBJECT_CRTC:
-		crtc = obj_to_crtc(obj);
-		ret = dpu_crtc_register_custom_event(dpu_kms, crtc, event, en);
-		break;
-	case DRM_MODE_OBJECT_CONNECTOR:
-		conn = obj_to_connector(obj);
-		ret = dpu_connector_register_custom_event(dpu_kms, conn, event,
-				en);
-		break;
-	}
-
-	return ret;
-}
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 5b12e87..a710b63 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -1226,180 +1226,6 @@ static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
 	return msm_submitqueue_remove(file->driver_priv, id);
 }
 
-static int msm_drm_object_supports_event(struct drm_device *dev,
-		struct drm_msm_event_req *req, struct drm_file *file)
-{
-	int ret = -EINVAL;
-	struct drm_mode_object *arg_obj;
-
-	arg_obj = drm_mode_object_find(dev, file, req->object_id, req->object_type);
-	if (!arg_obj)
-		return -ENOENT;
-
-	switch (arg_obj->type) {
-	case DRM_MODE_OBJECT_CRTC:
-	case DRM_MODE_OBJECT_CONNECTOR:
-		ret = 0;
-		break;
-	default:
-		ret = -EOPNOTSUPP;
-		break;
-	}
-
-	return ret;
-}
-
-static int msm_register_event(struct drm_device *dev,
-	struct drm_msm_event_req *req, struct drm_file *file, bool en)
-{
-	int ret = -EINVAL;
-	struct msm_drm_private *priv = dev->dev_private;
-	struct msm_kms *kms = priv->kms;
-	struct drm_mode_object *arg_obj;
-
-	arg_obj = drm_mode_object_find(dev, file, req->object_id, req->object_type);
-	if (!arg_obj)
-		return -ENOENT;
-
-	ret = kms->funcs->register_events(kms, arg_obj, req->event, en);
-	return ret;
-}
-
-static int msm_event_client_count(struct drm_device *dev,
-		struct drm_msm_event_req *req_event, bool locked)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	unsigned long flag = 0;
-	struct msm_drm_event *node;
-	int count = 0;
-
-	if (!locked)
-		spin_lock_irqsave(&dev->event_lock, flag);
-	list_for_each_entry(node, &priv->client_event_list, base.link) {
-		if (node->event.type == req_event->event &&
-			node->info.object_id == req_event->object_id)
-			count++;
-	}
-	if (!locked)
-		spin_unlock_irqrestore(&dev->event_lock, flag);
-
-	return count;
-}
-
-static int msm_ioctl_register_event(struct drm_device *dev, void *data,
-				    struct drm_file *file)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	struct drm_msm_event_req *req_event = data;
-	struct msm_drm_event *client, *node;
-	unsigned long flag = 0;
-	bool dup_request = false;
-	int ret = 0, count = 0;
-
-	ret = msm_drm_object_supports_event(dev, req_event, file);
-	if (ret) {
-		DRM_ERROR("unsupported event %x object %x object id %d\n",
-			req_event->event, req_event->object_type,
-			req_event->object_id);
-		return ret;
-	}
-
-	spin_lock_irqsave(&dev->event_lock, flag);
-	list_for_each_entry(node, &priv->client_event_list, base.link) {
-		if (node->base.file_priv != file)
-			continue;
-		if (node->event.type == req_event->event &&
-			node->info.object_id == req_event->object_id) {
-			DRM_DEBUG("duplicate request for event %x obj id %d\n",
-				node->event.type, node->info.object_id);
-			dup_request = true;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&dev->event_lock, flag);
-
-	if (dup_request)
-		return -EALREADY;
-
-	client = kzalloc(sizeof(*client), GFP_KERNEL);
-	if (!client)
-		return -ENOMEM;
-
-	client->base.file_priv = file;
-	client->base.event = &client->event;
-	client->event.type = req_event->event;
-	memcpy(&client->info, req_event, sizeof(client->info));
-
-	/* Get the count of clients that have registered for event.
-	 * Event should be enabled for first client, for subsequent enable
-	 * calls add to client list and return.
-	 */
-	count = msm_event_client_count(dev, req_event, false);
-	/* Add current client to list */
-	spin_lock_irqsave(&dev->event_lock, flag);
-	list_add_tail(&client->base.link, &priv->client_event_list);
-	spin_unlock_irqrestore(&dev->event_lock, flag);
-
-	if (count)
-		return 0;
-
-	ret = msm_register_event(dev, req_event, file, true);
-	if (ret) {
-		DRM_ERROR("failed to enable event %x object %x object id %d\n",
-			req_event->event, req_event->object_type,
-			req_event->object_id);
-		spin_lock_irqsave(&dev->event_lock, flag);
-		list_del(&client->base.link);
-		spin_unlock_irqrestore(&dev->event_lock, flag);
-		kfree(client);
-	}
-	return ret;
-}
-
-static int msm_ioctl_deregister_event(struct drm_device *dev, void *data,
-				      struct drm_file *file)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	struct drm_msm_event_req *req_event = data;
-	struct msm_drm_event *client = NULL, *node, *temp;
-	unsigned long flag = 0;
-	int count = 0;
-	bool found = false;
-	int ret = 0;
-
-	ret = msm_drm_object_supports_event(dev, req_event, file);
-	if (ret) {
-		DRM_ERROR("unsupported event %x object %x object id %d\n",
-			req_event->event, req_event->object_type,
-			req_event->object_id);
-		return ret;
-	}
-
-	spin_lock_irqsave(&dev->event_lock, flag);
-	list_for_each_entry_safe(node, temp, &priv->client_event_list,
-			base.link) {
-		if (node->event.type == req_event->event &&
-		    node->info.object_id == req_event->object_id &&
-		    node->base.file_priv == file) {
-			client = node;
-			list_del(&client->base.link);
-			found = true;
-			kfree(client);
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&dev->event_lock, flag);
-
-	if (!found)
-		return -ENOENT;
-
-	count = msm_event_client_count(dev, req_event, false);
-	if (!count)
-		ret = msm_register_event(dev, req_event, file, false);
-
-	return ret;
-}
-
 void msm_mode_object_event_notify(struct drm_mode_object *obj,
 		struct drm_device *dev, struct drm_event *event, u8 *payload)
 {
@@ -1452,29 +1278,6 @@ void msm_mode_object_event_notify(struct drm_mode_object *obj,
 
 static int msm_release(struct inode *inode, struct file *filp)
 {
-	struct drm_file *file_priv = filp->private_data;
-	struct drm_minor *minor = file_priv->minor;
-	struct drm_device *dev = minor->dev;
-	struct msm_drm_private *priv = dev->dev_private;
-	struct msm_drm_event *node, *temp;
-	u32 count;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->event_lock, flags);
-	list_for_each_entry_safe(node, temp, &priv->client_event_list,
-			base.link) {
-		if (node->base.file_priv != file_priv)
-			continue;
-		list_del(&node->base.link);
-		spin_unlock_irqrestore(&dev->event_lock, flags);
-		count = msm_event_client_count(dev, &node->info, true);
-		if (!count)
-			msm_register_event(dev, &node->info, file_priv, false);
-		kfree(node);
-		spin_lock_irqsave(&dev->event_lock, flags);
-	}
-	spin_unlock_irqrestore(&dev->event_lock, flags);
-
 	return drm_release(inode, filp);
 }
 
@@ -1595,10 +1398,6 @@ int msm_ioctl_rmfb2(struct drm_device *dev, void *data,
 #ifdef CONFIG_DRM_MSM_WRITEBACK
 	DRM_IOCTL_DEF_DRV(DPU_WB_CONFIG, dpu_wb_config, DRM_UNLOCKED|DRM_AUTH),
 #endif
-	DRM_IOCTL_DEF_DRV(MSM_REGISTER_EVENT,  msm_ioctl_register_event,
-			  DRM_UNLOCKED|DRM_CONTROL_ALLOW),
-	DRM_IOCTL_DEF_DRV(MSM_DEREGISTER_EVENT,  msm_ioctl_deregister_event,
-			  DRM_UNLOCKED|DRM_CONTROL_ALLOW),
 	DRM_IOCTL_DEF_DRV(MSM_RMFB2, msm_ioctl_rmfb2,
 			  DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 };
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index 25800c0..0ae1deb 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -94,8 +94,6 @@ struct msm_kms_funcs {
 	void (*preclose)(struct msm_kms *kms, struct drm_file *file);
 	void (*postclose)(struct msm_kms *kms, struct drm_file *file);
 	void (*lastclose)(struct msm_kms *kms);
-	int (*register_events)(struct msm_kms *kms,
-			struct drm_mode_object *obj, u32 event, bool en);
 	void (*set_encoder_mode)(struct msm_kms *kms,
 				 struct drm_encoder *encoder,
 				 bool cmd_mode);
