Merge "msm: camera: sync: Add SYNC_V4L_EVENT_V2 support in sync driver" into camera-kernel.lnx.4.0

drivers/cam_core/cam_context_utils.c

@@ -98,7 +98,8 @@ int cam_context_buf_done_from_hw(struct cam_context *ctx,
 	for (j = 0; j < req->num_out_map_entries; j++) {
 		CAM_DBG(CAM_REQ, "fence %d signal with %d",
 			req->out_map_entries[j].sync_id, result);
-		cam_sync_signal(req->out_map_entries[j].sync_id, result);
+		cam_sync_signal(req->out_map_entries[j].sync_id, result,
+			done->evt_param);
 		req->out_map_entries[j].sync_id = -1;
 	}
 
@@ -661,7 +662,8 @@ int32_t cam_context_flush_ctx_to_hw(struct cam_context *ctx)
 			if (req->out_map_entries[i].sync_id != -1) {
 				rc = cam_sync_signal(
 					req->out_map_entries[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_FLUSH);
 				if (rc == -EALREADY) {
 					CAM_ERR(CAM_CTXT,
 					"Req: %llu already signalled, sync_id:%d",
@@ -733,7 +735,8 @@ int32_t cam_context_flush_ctx_to_hw(struct cam_context *ctx)
 			if (req->out_map_entries[i].sync_id != -1) {
 				rc = cam_sync_signal(
 					req->out_map_entries[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_FLUSH);
 				if (rc == -EALREADY) {
 					CAM_ERR(CAM_CTXT,
 						"Req: %llu already signalled ctx: %pK dev_name: %s dev_handle: %d ctx_state: %d",
@@ -846,7 +849,8 @@ int32_t cam_context_flush_req_to_hw(struct cam_context *ctx,
 					req->out_map_entries[i].sync_id;
 				if (sync_id != -1) {
 					rc = cam_sync_signal(sync_id,
-						CAM_SYNC_STATE_SIGNALED_CANCEL);
+						CAM_SYNC_STATE_SIGNALED_CANCEL,
+						CAM_SYNC_EVENT_FLUSH);
 					if (rc == -EALREADY) {
 						CAM_ERR(CAM_CTXT,
 						"Req: %llu already signalled, sync_id:%d",

drivers/cam_core/cam_hw_mgr_intf.h

@@ -90,6 +90,7 @@ struct cam_hw_fence_map_entry {
  * @resrouce_handle:       list of the resource handle
  * @timestamp:             time stamp
  * @request_id:            request identifier
+ * @evt_param:             event parameter
  *
  */
 struct cam_hw_done_event_data {
@@ -97,6 +98,7 @@ struct cam_hw_done_event_data {
 	uint32_t           resource_handle[CAM_NUM_OUT_PER_COMP_IRQ_MAX];
 	struct timeval     timestamp;
 	uint64_t           request_id;
+	uint32_t           evt_param;
 };
 
 /**

drivers/cam_cust/cam_custom_context.c

@@ -182,7 +182,8 @@ static int __cam_custom_ctx_frame_done(
 		}
 
 		rc = cam_sync_signal(req_custom->fence_map_out[j].sync_id,
-				CAM_SYNC_STATE_SIGNALED_SUCCESS);
+				CAM_SYNC_STATE_SIGNALED_SUCCESS,
+				CAM_SYNC_EVENT_SUCCESS);
 		if (rc)
 			CAM_ERR(CAM_CUSTOM, "Sync failed with rc = %d", rc);
 
@@ -368,7 +369,8 @@ static int __cam_custom_ctx_flush_req(struct cam_context *ctx,
 					req_custom->fence_map_out[i].sync_id);
 				rc = cam_sync_signal(
 					req_custom->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_FLUSH);
 				if (rc)
 					CAM_ERR_RATE_LIMIT(CAM_CUSTOM,
 						"signal fence failed\n");
@@ -543,7 +545,8 @@ static int __cam_custom_stop_dev_core(
 			if (req_custom->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_custom->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}
@@ -559,7 +562,8 @@ static int __cam_custom_stop_dev_core(
 			if (req_custom->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_custom->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}
@@ -575,7 +579,8 @@ static int __cam_custom_stop_dev_core(
 			if (req_custom->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_custom->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_EVENT_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}

drivers/cam_isp/cam_isp_context.c

@@ -813,7 +813,8 @@ static int __cam_isp_ctx_handle_buf_done_for_req_list(
 			for (i = 0; i < req_isp->num_fence_map_out; i++)
 				rc = cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_ERROR);
+					CAM_SYNC_STATE_SIGNALED_ERROR,
+					CAM_SYNC_ISP_EVENT_BUBBLE);
 
 			list_add_tail(&req->list, &ctx->free_req_list);
 			CAM_DBG(CAM_REQ,
@@ -935,7 +936,8 @@ static int __cam_isp_ctx_handle_buf_done_for_request(
 				ctx->ctx_id);
 
 			rc = cam_sync_signal(req_isp->fence_map_out[j].sync_id,
-				CAM_SYNC_STATE_SIGNALED_SUCCESS);
+				CAM_SYNC_STATE_SIGNALED_SUCCESS,
+				CAM_SYNC_EVENT_SUCCESS);
 			if (rc)
 				CAM_DBG(CAM_ISP, "Sync failed with rc = %d",
 					 rc);
@@ -948,7 +950,8 @@ static int __cam_isp_ctx_handle_buf_done_for_request(
 				ctx->ctx_id);
 
 			rc = cam_sync_signal(req_isp->fence_map_out[j].sync_id,
-				CAM_SYNC_STATE_SIGNALED_ERROR);
+				CAM_SYNC_STATE_SIGNALED_ERROR,
+				CAM_SYNC_ISP_EVENT_BUBBLE);
 			if (rc)
 				CAM_ERR(CAM_ISP, "Sync failed with rc = %d",
 					rc);
@@ -1074,7 +1077,8 @@ static int __cam_isp_ctx_handle_buf_done_for_request_verify_addr(
 				ctx->ctx_id);
 
 			rc = cam_sync_signal(req_isp->fence_map_out[j].sync_id,
-				CAM_SYNC_STATE_SIGNALED_SUCCESS);
+				CAM_SYNC_STATE_SIGNALED_SUCCESS,
+				CAM_SYNC_EVENT_SUCCESS);
 			if (rc)
 				CAM_DBG(CAM_ISP, "Sync failed with rc = %d",
 					 rc);
@@ -1087,7 +1091,8 @@ static int __cam_isp_ctx_handle_buf_done_for_request_verify_addr(
 				ctx->ctx_id);
 
 			rc = cam_sync_signal(req_isp->fence_map_out[j].sync_id,
-				CAM_SYNC_STATE_SIGNALED_ERROR);
+				CAM_SYNC_STATE_SIGNALED_ERROR,
+				CAM_SYNC_ISP_EVENT_BUBBLE);
 			if (rc)
 				CAM_ERR(CAM_ISP, "Sync failed with rc = %d",
 					rc);
@@ -2003,6 +2008,22 @@ static int __cam_isp_ctx_buf_done_in_bubble_applied(
 	return rc;
 }
 
+static uint32_t get_evt_param(uint32_t error_type)
+{
+	switch (error_type) {
+	case CAM_ISP_HW_ERROR_OVERFLOW:
+		return CAM_SYNC_ISP_EVENT_OVERFLOW;
+	case CAM_ISP_HW_ERROR_P2I_ERROR:
+		return CAM_SYNC_ISP_EVENT_P2I_ERROR;
+	case CAM_ISP_HW_ERROR_VIOLATION:
+		return CAM_SYNC_ISP_EVENT_VIOLATION;
+	case CAM_ISP_HW_ERROR_BUSIF_OVERFLOW:
+		return CAM_SYNC_ISP_EVENT_BUSIF_OVERFLOW;
+	default:
+		return CAM_SYNC_ISP_EVENT_UNKNOWN;
+	}
+}
+
 static int __cam_isp_ctx_handle_error(struct cam_isp_context *ctx_isp,
 	void *evt_data)
 {
@@ -2019,6 +2040,7 @@ static int __cam_isp_ctx_handle_error(struct cam_isp_context *ctx_isp,
 	uint64_t                         error_request_id;
 	struct cam_hw_fence_map_entry   *fence_map_out = NULL;
 	struct cam_req_mgr_message       req_msg;
+	uint32_t                         evt_param;
 
 	struct cam_context *ctx = ctx_isp->base;
 	struct cam_isp_hw_error_event_data  *error_event_data =
@@ -2043,6 +2065,9 @@ static int __cam_isp_ctx_handle_error(struct cam_isp_context *ctx_isp,
 			rc = 0;
 		}
 	}
+
+	evt_param = get_evt_param(error_type);
+
 	/*
 	 * The error is likely caused by first request on the active list.
 	 * If active list is empty check wait list (maybe error hit as soon
@@ -2087,7 +2112,8 @@ static int __cam_isp_ctx_handle_error(struct cam_isp_context *ctx_isp,
 				if (req_isp->fence_map_out[i].sync_id != -1) {
 					rc = cam_sync_signal(
 						fence_map_out->sync_id,
-						CAM_SYNC_STATE_SIGNALED_ERROR);
+						CAM_SYNC_STATE_SIGNALED_ERROR,
+						evt_param);
 					fence_map_out->sync_id = -1;
 				}
 			}
@@ -2118,7 +2144,8 @@ static int __cam_isp_ctx_handle_error(struct cam_isp_context *ctx_isp,
 				if (req_isp->fence_map_out[i].sync_id != -1) {
 					rc = cam_sync_signal(
 						fence_map_out->sync_id,
-						CAM_SYNC_STATE_SIGNALED_ERROR);
+						CAM_SYNC_STATE_SIGNALED_ERROR,
+						evt_param);
 					fence_map_out->sync_id = -1;
 				}
 			}
@@ -2181,7 +2208,8 @@ end:
 			if (req_isp->fence_map_out[i].sync_id != -1)
 				rc = cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_ERROR);
+					CAM_SYNC_STATE_SIGNALED_ERROR,
+					evt_param);
 			req_isp->fence_map_out[i].sync_id = -1;
 		}
 		list_del_init(&req->list);
@@ -3139,7 +3167,8 @@ static int __cam_isp_ctx_flush_req(struct cam_context *ctx,
 					req_isp->fence_map_out[i].sync_id);
 				rc = cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_ISP_EVENT_FLUSH);
 				if (rc) {
 					tmp = req_isp->fence_map_out[i].sync_id;
 					CAM_ERR_RATE_LIMIT(CAM_ISP,
@@ -3605,7 +3634,8 @@ static int __cam_isp_ctx_rdi_only_sof_in_bubble_state(
 			if (req_isp->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_ERROR);
+					CAM_SYNC_STATE_SIGNALED_ERROR,
+					CAM_SYNC_ISP_EVENT_BUBBLE);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 		ctx_isp->active_req_cnt--;
@@ -5025,7 +5055,8 @@ static int __cam_isp_ctx_stop_dev_in_activated_unlock(
 			if (req_isp->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_ISP_EVENT_HW_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}
@@ -5041,7 +5072,8 @@ static int __cam_isp_ctx_stop_dev_in_activated_unlock(
 			if (req_isp->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_ISP_EVENT_HW_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}
@@ -5057,7 +5089,8 @@ static int __cam_isp_ctx_stop_dev_in_activated_unlock(
 			if (req_isp->fence_map_out[i].sync_id != -1) {
 				cam_sync_signal(
 					req_isp->fence_map_out[i].sync_id,
-					CAM_SYNC_STATE_SIGNALED_CANCEL);
+					CAM_SYNC_STATE_SIGNALED_CANCEL,
+					CAM_SYNC_ISP_EVENT_HW_STOP);
 			}
 		list_add_tail(&req->list, &ctx->free_req_list);
 	}

drivers/cam_sync/cam_sync.c

@@ -184,7 +184,7 @@ int cam_sync_deregister_callback(sync_callback cb_func,
 	return found ? 0 : -ENOENT;
 }
 
-int cam_sync_signal(int32_t sync_obj, uint32_t status)
+int cam_sync_signal(int32_t sync_obj, uint32_t status, uint32_t event_cause)
 {
 	struct sync_table_row *row = NULL;
 	struct sync_table_row *parent_row = NULL;
@@ -228,8 +228,8 @@ int cam_sync_signal(int32_t sync_obj, uint32_t status)
 		(status != CAM_SYNC_STATE_SIGNALED_CANCEL)) {
 		spin_unlock_bh(&sync_dev->row_spinlocks[sync_obj]);
 		CAM_ERR(CAM_SYNC,
-			"Error: signaling with undefined status = %d",
-			status);
+			"Error: signaling with undefined status = %d event reason = %u",
+			status, event_cause);
 		return -EINVAL;
 	}
 
@@ -239,7 +239,7 @@ int cam_sync_signal(int32_t sync_obj, uint32_t status)
 	}
 
 	row->state = status;
-	cam_sync_util_dispatch_signaled_cb(sync_obj, status);
+	cam_sync_util_dispatch_signaled_cb(sync_obj, status, event_cause);
 
 	/* copy parent list to local and release child lock */
 	INIT_LIST_HEAD(&parents_list);
@@ -275,7 +275,8 @@ int cam_sync_signal(int32_t sync_obj, uint32_t status)
 
 		if (!parent_row->remaining)
 			cam_sync_util_dispatch_signaled_cb(
-				parent_info->sync_id, parent_row->state);
+				parent_info->sync_id, parent_row->state,
+				event_cause);
 
 		spin_unlock_bh(&sync_dev->row_spinlocks[parent_info->sync_id]);
 		list_del_init(&parent_info->list);
@@ -514,7 +515,8 @@ static int cam_sync_handle_signal(struct cam_private_ioctl_arg *k_ioctl)
 	}
 
 	return cam_sync_signal(sync_signal.sync_obj,
-		sync_signal.sync_state);
+		sync_signal.sync_state,
+		CAM_SYNC_CAM_SYNC_SIGNAL_EVENT);
 }
 
 static int cam_sync_handle_merge(struct cam_private_ioctl_arg *k_ioctl)
@@ -664,7 +666,8 @@ static int cam_sync_handle_register_user_payload(
 			sync_obj,
 			row->state,
 			user_payload_kernel->payload_data,
-			CAM_SYNC_USER_PAYLOAD_SIZE * sizeof(__u64));
+			CAM_SYNC_USER_PAYLOAD_SIZE * sizeof(__u64),
+			CAM_SYNC_REGISTER_PAYLOAD_EVENT);
 
 		spin_unlock_bh(&sync_dev->row_spinlocks[sync_obj]);
 		kfree(user_payload_kernel);
@@ -869,7 +872,8 @@ static int cam_sync_close(struct file *filep)
 			 */
 			if (row->state == CAM_SYNC_STATE_ACTIVE) {
 				rc = cam_sync_signal(i,
-					CAM_SYNC_STATE_SIGNALED_ERROR);
+					CAM_SYNC_STATE_SIGNALED_ERROR,
+					CAM_SYNC_v4l2_RELEASE_EVENT);
 				if (rc < 0)
 					CAM_ERR(CAM_SYNC,
 					  "Cleanup signal fail idx:%d\n",
@@ -912,11 +916,24 @@ static int cam_sync_close(struct file *filep)
 static void cam_sync_event_queue_notify_error(const struct v4l2_event *old,
 	struct v4l2_event *new)
 {
-	struct cam_sync_ev_header *ev_header;
+	if (sync_dev->version == CAM_SYNC_V4L_EVENT_V2) {
+		struct cam_sync_ev_header_v2 *ev_header;
+
+		ev_header = CAM_SYNC_GET_HEADER_PTR_V2((*old));
+		CAM_ERR(CAM_CRM,
+			"Failed to notify event id %d fence %d statue %d reason %u %u %u %u",
+			old->id, ev_header->sync_obj, ev_header->status,
+			ev_header->evt_param[0], ev_header->evt_param[1],
+			ev_header->evt_param[2], ev_header->evt_param[3]);
+
+	} else {
+		struct cam_sync_ev_header *ev_header;
 
-	ev_header = CAM_SYNC_GET_HEADER_PTR((*old));
-	CAM_ERR(CAM_CRM, "Failed to notify event id %d fence %d statue %d",
-		old->id, ev_header->sync_obj, ev_header->status);
+		ev_header = CAM_SYNC_GET_HEADER_PTR((*old));
+		CAM_ERR(CAM_CRM,
+			"Failed to notify event id %d fence %d statue %d",
+			old->id, ev_header->sync_obj, ev_header->status);
+	}
 }
 
 static struct v4l2_subscribed_event_ops cam_sync_v4l2_ops = {
@@ -926,6 +943,14 @@ static struct v4l2_subscribed_event_ops cam_sync_v4l2_ops = {
 int cam_sync_subscribe_event(struct v4l2_fh *fh,
 		const struct v4l2_event_subscription *sub)
 {
+	if (!((sub->type == CAM_SYNC_V4L_EVENT) ||
+	(sub->type == CAM_SYNC_V4L_EVENT_V2))) {
+		CAM_ERR(CAM_SYNC, "Non supported event type 0x%x", sub->type);
+		return -EINVAL;
+	}
+
+	sync_dev->version = sub->type;
+	CAM_DBG(CAM_SYNC, "Sync event verion type 0x%x", sync_dev->version);
 	return v4l2_event_subscribe(fh, sub, CAM_SYNC_MAX_V4L2_EVENTS,
 		&cam_sync_v4l2_ops);
 }
@@ -933,6 +958,12 @@ int cam_sync_subscribe_event(struct v4l2_fh *fh,
 int cam_sync_unsubscribe_event(struct v4l2_fh *fh,
 		const struct v4l2_event_subscription *sub)
 {
+	if (!((sub->type == CAM_SYNC_V4L_EVENT) ||
+	(sub->type == CAM_SYNC_V4L_EVENT_V2))) {
+		CAM_ERR(CAM_SYNC, "Non supported event type 0x%x", sub->type);
+		return -EINVAL;
+	}
+
 	return v4l2_event_unsubscribe(fh, sub);
 }
 
@@ -1068,7 +1099,7 @@ int cam_synx_sync_signal(int32_t sync_obj, uint32_t synx_status)
 		break;
 	}
 
-	rc = cam_sync_signal(sync_obj, sync_status);
+	rc = cam_sync_signal(sync_obj, sync_status, CAM_SYNC_EVENT_SYNX);
 	if (rc) {
 		CAM_ERR(CAM_SYNC,
 			"synx signal failed with %d, sync_obj=%d, synx_status=%d, sync_status=%d",

drivers/cam_sync/cam_sync_api.h

@@ -76,10 +76,11 @@ int cam_sync_deregister_callback(sync_callback cb_func,
  * @param sync_obj: int referencing the sync object.
  * @param status: Status of the signaling. Can be either SYNC_SIGNAL_ERROR or
  * SYNC_SIGNAL_SUCCESS.
+ * @param evt_param: Event parameter
  *
  * @return Status of operation. Negative in case of error. Zero otherwise.
  */
-int cam_sync_signal(int32_t sync_obj, uint32_t status);
+int cam_sync_signal(int32_t sync_obj, uint32_t status, uint32_t evt_param);
 
 /**
  * @brief: Merges multiple sync objects

drivers/cam_sync/cam_sync_private.h

@@ -182,6 +182,7 @@ struct cam_signalable_info {
  * @cam_sync_eventq : Event queue used to dispatch user payloads to user space
  * @bitmap          : Bitmap representation of all sync objects
  * @params          : Parameters for synx call back registration
+ * @version         : version support
  */
 struct sync_device {
 	struct video_device *vdev;
@@ -198,6 +199,7 @@ struct sync_device {
 #if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
 	struct synx_register_params params;
 #endif
+	uint32_t version;
 };
 
 

drivers/cam_sync/cam_sync_util.c

@@ -300,7 +300,7 @@ void cam_sync_util_cb_dispatch(struct work_struct *cb_dispatch_work)
 }
 
 void cam_sync_util_dispatch_signaled_cb(int32_t sync_obj,
-	uint32_t status)
+	uint32_t status, uint32_t event_cause)
 {
 	struct sync_callback_info  *sync_cb;
 	struct sync_user_payload   *payload_info;
@@ -339,7 +339,8 @@ void cam_sync_util_dispatch_signaled_cb(int32_t sync_obj,
 			sync_obj,
 			status,
 			payload_info->payload_data,
-			CAM_SYNC_PAYLOAD_WORDS * sizeof(__u64));
+			CAM_SYNC_PAYLOAD_WORDS * sizeof(__u64),
+			event_cause);
 
 		list_del_init(&payload_info->list);
 		/*
@@ -361,24 +362,40 @@ void cam_sync_util_send_v4l2_event(uint32_t id,
 	uint32_t sync_obj,
 	int status,
 	void *payload,
-	int len)
+	int len, uint32_t event_cause)
 {
 	struct v4l2_event event;
 	__u64 *payload_data = NULL;
-	struct cam_sync_ev_header *ev_header = NULL;
 
-	event.id = id;
-	event.type = CAM_SYNC_V4L_EVENT;
-
-	ev_header = CAM_SYNC_GET_HEADER_PTR(event);
-	ev_header->sync_obj = sync_obj;
-	ev_header->status = status;
+	if (sync_dev->version == CAM_SYNC_V4L_EVENT_V2) {
+		struct cam_sync_ev_header_v2 *ev_header = NULL;
+
+		event.id = id;
+		event.type = CAM_SYNC_V4L_EVENT_V2;
+
+		ev_header = CAM_SYNC_GET_HEADER_PTR_V2(event);
+		ev_header->sync_obj = sync_obj;
+		ev_header->status = status;
+		ev_header->version = sync_dev->version;
+		ev_header->evt_param[CAM_SYNC_EVENT_REASON_CODE_INDEX] =
+			event_cause;
+		payload_data = CAM_SYNC_GET_PAYLOAD_PTR_V2(event, __u64);
+	} else {
+		struct cam_sync_ev_header *ev_header = NULL;
+
+		event.id = id;
+		event.type = CAM_SYNC_V4L_EVENT;
+
+		ev_header = CAM_SYNC_GET_HEADER_PTR(event);
+		ev_header->sync_obj = sync_obj;
+		ev_header->status = status;
+		payload_data = CAM_SYNC_GET_PAYLOAD_PTR(event, __u64);
+	}
 
-	payload_data = CAM_SYNC_GET_PAYLOAD_PTR(event, __u64);
 	memcpy(payload_data, payload, len);
-
 	v4l2_event_queue(sync_dev->vdev, &event);
-	CAM_DBG(CAM_SYNC, "send v4l2 event for sync_obj :%d",
+	CAM_DBG(CAM_SYNC, "send v4l2 event version %d for sync_obj :%d",
+		sync_dev->version,
 		sync_obj);
 }
 

drivers/cam_sync/cam_sync_util.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef __CAM_SYNC_UTIL_H__
@@ -82,13 +82,14 @@ void cam_sync_util_cb_dispatch(struct work_struct *cb_dispatch_work);
 /**
  * @brief: Function to dispatch callbacks for a signaled sync object
  *
- * @sync_obj : Sync object that is signaled
- * @status   : Status of the signaled object
+ * @sync_obj    : Sync object that is signaled
+ * @status      : Status of the signaled object
+ * @evt_param   : Event paramaeter
  *
  * @return None
  */
 void cam_sync_util_dispatch_signaled_cb(int32_t sync_obj,
-	uint32_t status);
+	uint32_t status, uint32_t evt_param);
 
 /**
  * @brief: Function to send V4L event to user space
@@ -97,6 +98,7 @@ void cam_sync_util_dispatch_signaled_cb(int32_t sync_obj,
  * @param status   : Status of the event
  * @payload        : Payload that needs to be sent to user space
  * @len            : Length of the payload
+ * @evt_param      : Event Paramenter
  *
  * @return None
  */
@@ -104,7 +106,8 @@ void cam_sync_util_send_v4l2_event(uint32_t id,
 	uint32_t sync_obj,
 	int status,
 	void *payload,
-	int len);
+	int len,
+	uint32_t evt_param);
 
 /**
  * @brief: Function which gets the next state of the sync object based on the

include/uapi/camera/media/cam_sync.h

@@ -15,6 +15,7 @@
 
 /* V4L event which user space will subscribe to */
 #define CAM_SYNC_V4L_EVENT                       (V4L2_EVENT_PRIVATE_START + 0)
+#define CAM_SYNC_V4L_EVENT_V2                    (V4L2_EVENT_PRIVATE_START + 1)
 
 /* Specific event ids to get notified in user space */
 #define CAM_SYNC_V4L_EVENT_ID_CB_TRIG            0
@@ -31,12 +32,96 @@
 #define CAM_SYNC_GET_HEADER_PTR(ev)              \
 	((struct cam_sync_ev_header *)ev.u.data)
 
+#define CAM_SYNC_GET_PAYLOAD_PTR_V2(ev, type)       \
+	(type *)((char *)ev.u.data + sizeof(struct cam_sync_ev_header_v2))
+
+#define CAM_SYNC_GET_HEADER_PTR_V2(ev)              \
+	((struct cam_sync_ev_header_v2 *)ev.u.data)
+
 #define CAM_SYNC_STATE_INVALID                   0
 #define CAM_SYNC_STATE_ACTIVE                    1
 #define CAM_SYNC_STATE_SIGNALED_SUCCESS          2
 #define CAM_SYNC_STATE_SIGNALED_ERROR            3
 #define CAM_SYNC_STATE_SIGNALED_CANCEL           4
 
+/* Top level sync event reason types */
+#define CAM_SYNC_EVENT_UNKNOWN            0
+#define CAM_SYNC_EVENT_SUCCESS            1
+#define CAM_SYNC_EVENT_FLUSH              2
+#define CAM_SYNC_EVENT_STOP               3
+#define CAM_SYNC_EVENT_SYNX               4
+
+
+/* ISP Sync event reason types */
+#define CAM_SYNC_ISP_EVENT_START          20
+#define CAM_SYNC_ISP_EVENT_UNKNOWN        (CAM_SYNC_ISP_EVENT_START + 0)
+#define CAM_SYNC_ISP_EVENT_BUBBLE         (CAM_SYNC_ISP_EVENT_START + 1)
+#define CAM_SYNC_ISP_EVENT_OVERFLOW       (CAM_SYNC_ISP_EVENT_START + 2)
+#define CAM_SYNC_ISP_EVENT_P2I_ERROR      (CAM_SYNC_ISP_EVENT_START + 3)
+#define CAM_SYNC_ISP_EVENT_VIOLATION      (CAM_SYNC_ISP_EVENT_START + 4)
+#define CAM_SYNC_ISP_EVENT_BUSIF_OVERFLOW (CAM_SYNC_ISP_EVENT_START + 5)
+#define CAM_SYNC_ISP_EVENT_FLUSH          (CAM_SYNC_ISP_EVENT_START + 6)
+#define CAM_SYNC_ISP_EVENT_HW_STOP        (CAM_SYNC_ISP_EVENT_START + 7)
+#define CAM_SYNC_ISP_EVENT_END            (CAM_SYNC_ISP_EVENT_START + 50)
+
+/* ICP Sync event reason types */
+#define CAM_SYNC_ICP_EVENT_START                 (CAM_SYNC_ISP_EVENT_END + 1)
+#define CAM_SYNC_ICP_EVENT_UNKNOWN               (CAM_SYNC_ICP_EVENT_START + 0)
+#define CAM_SYNC_ICP_EVENT_FRAME_PROCESS_FAILURE (CAM_SYNC_ICP_EVENT_START + 1)
+#define CAM_SYNC_ICP_EVENT_CONFIG_ERR            (CAM_SYNC_ICP_EVENT_START + 2)
+#define CAM_SYNC_ICP_EVENT_END                   (CAM_SYNC_ICP_EVENT_START + 50)
+
+/* JPEG Sync event reason types */
+#define CAM_SYNC_JPEG_EVENT_START               (CAM_SYNC_ICP_EVENT_END + 1)
+#define CAM_SYNC_JPEG_EVENT_UNKNOWN             (CAM_SYNC_JPEG_EVENT_START + 0)
+#define CAM_SYNC_JPEG_EVENT_INVLD_CMD           (CAM_SYNC_JPEG_EVENT_START + 1)
+#define CAM_SYNC_JPEG_EVENT_SET_IRQ_CB          (CAM_SYNC_JPEG_EVENT_START + 2)
+#define CAM_SYNC_JPEG_EVENT_HW_RESET_FAILED     (CAM_SYNC_JPEG_EVENT_START + 3)
+#define CAM_SYNC_JPEG_EVENT_CDM_CHANGE_BASE_ERR (CAM_SYNC_JPEG_EVENT_START + 4)
+#define CAM_SYNC_JPEG_EVENT_CDM_CONFIG_ERR      (CAM_SYNC_JPEG_EVENT_START + 5)
+#define CAM_SYNC_JPEG_EVENT_START_HW_ERR        (CAM_SYNC_JPEG_EVENT_START + 6)
+#define CAM_SYNC_JPEG_EVENT_END                 (CAM_SYNC_JPEG_EVENT_START + 50)
+
+/* FD Sync event reason types */
+#define CAM_SYNC_FD_EVENT_START           (CAM_SYNC_JPEG_EVENT_END + 1)
+#define CAM_SYNC_FD_EVENT_UNKNOWN         (CAM_SYNC_FD_EVENT_START + 0)
+#define CAM_SYNC_FD_EVENT_IRQ_FRAME_DONE  (CAM_SYNC_FD_EVENT_START + 1)
+#define CAM_SYNC_FD_EVENT_IRQ_RESET_DONE  (CAM_SYNC_FD_EVENT_START + 2)
+#define CAM_SYNC_FD_EVENT_HALT            (CAM_SYNC_FD_EVENT_START + 3)
+#define CAM_SYNC_FD_EVENT_END             (CAM_SYNC_FD_EVENT_START + 50)
+
+/* LRME Sync event reason types */
+#define CAM_SYNC_LRME_EVENT_START           (CAM_SYNC_FD_EVENT_END + 1)
+#define CAM_SYNC_LRME_EVENT_UNKNOWN         (CAM_SYNC_LRME_EVENT_START + 0)
+#define CAM_SYNC_LRME_EVENT_CB_ERROR        (CAM_SYNC_LRME_EVENT_START + 1)
+#define CAM_SYNC_LRME_EVENT_END             (CAM_SYNC_LRME_EVENT_START + 50)
+
+/* OPE Sync event reason types */
+#define CAM_SYNC_OPE_EVENT_START              (CAM_SYNC_LRME_EVENT_END + 1)
+#define CAM_SYNC_OPE_EVENT_UNKNOWN            (CAM_SYNC_OPE_EVENT_START + 0)
+#define CAM_SYNC_OPE_EVENT_PAGE_FAULT         (CAM_SYNC_OPE_EVENT_START + 1)
+#define CAM_SYNC_OPE_EVENT_HW_HANG            (CAM_SYNC_OPE_EVENT_START + 2)
+#define CAM_SYNC_OPE_EVENT_HALT               (CAM_SYNC_OPE_EVENT_START + 3)
+#define CAM_SYNC_OPE_EVENT_CONFIG_ERR         (CAM_SYNC_OPE_EVENT_START + 4)
+#define CAM_SYNC_OPE_EVENT_HW_FLUSH           (CAM_SYNC_OPE_EVENT_START + 5)
+#define CAM_SYNC_OPE_EVENT_HW_RESUBMIT        (CAM_SYNC_OPE_EVENT_START + 6)
+#define CAM_SYNC_OPE_EVENT_HW_RESET_DONE      (CAM_SYNC_OPE_EVENT_START + 7)
+#define CAM_SYNC_OPE_EVENT_HW_ERROR           (CAM_SYNC_OPE_EVENT_START + 8)
+#define CAM_SYNC_OPE_EVENT_INVLD_CMD          (CAM_SYNC_OPE_EVENT_START + 9)
+#define CAM_SYNC_OPE_EVENT_HW_RESET_FAILED    (CAM_SYNC_OPE_EVENT_START + 10)
+#define CAM_SYNC_OPE_EVENT_END                (CAM_SYNC_OPE_EVENT_START + 50)
+
+/* Others ioctl/v4l2 Sync event reason types */
+#define CAM_SYNC_OTHER_EVENT_START            (CAM_SYNC_OPE_EVENT_END + 1)
+#define CAM_SYNC_REGISTER_PAYLOAD_EVENT       (CAM_SYNC_OTHER_EVENT_START + 0)
+#define CAM_SYNC_CAM_SYNC_SIGNAL_EVENT        (CAM_SYNC_OTHER_EVENT_START + 1)
+#define CAM_SYNC_v4l2_RELEASE_EVENT           (CAM_SYNC_OTHER_EVENT_START + 2)
+#define CAM_SYNC_OTHER_EVENT_END              (CAM_SYNC_OTHER_EVENT_START + 50)
+
+#define CAM_SYNC_EVENT_CNT                7
+#define CAM_SYNC_EVENT_REASON_CODE_INDEX  0
+
+
 /**
  * struct cam_sync_ev_header - Event header for sync event notification
  *
@@ -48,6 +133,21 @@ struct cam_sync_ev_header {
 	__s32 status;
 };
 
+/**
+ * struct cam_sync_ev_header_v2 - Event header for sync event notification
+ *
+ * @sync_obj:    Sync object
+ * @status:      Status of the object
+ * @version:     sync driver version
+ * @evt_param:   event parameter
+ */
+struct cam_sync_ev_header_v2 {
+	__s32 sync_obj;
+	__s32 status;
+	uint32_t version;
+	uint32_t evt_param[CAM_SYNC_EVENT_CNT];
+};
+
 /**
  * struct cam_sync_info - Sync object creation information
  *