msm: camera: sync: Add monitor information for sync objects

Monitor sync object operations such as create, register callback,
signal, unregister callback which is useful in debugging. Introduce
debugfs to dynamically set the monitor mask. Apply dump on error
when CAM_GENERIC_FENCE_TYPE_xx is set in cam_sync_monitor_mask and
apply dump on release when CAM_GENERIC_FENCE_TYPE_xx_DUMP is also set
at the same time. Apply dynamic memory allocation for monitor data
in synx and dma. Refactor APIs into generic ones and add memory
checkings.

CRs-Fixed: 3350863
Change-Id: I70cfdc1215be5f6bf564c672a874e6ba7997cdfa
Signed-off-by: Pavan Kumar Chilamkurthi <quic_pchilamk@quicinc.com>
Signed-off-by: Haochen Yang <quic_haocyang@quicinc.com>

drivers/cam_sync/cam_sync_util.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef __CAM_SYNC_UTIL_H__
@@ -183,4 +183,35 @@ void cam_sync_util_cleanup_children_list(struct sync_table_row *row,
 void cam_sync_util_cleanup_parents_list(struct sync_table_row *row,
 	uint32_t list_clean_type, uint32_t sync_obj);
 
+/**
+ * @brief: Function to dump sync obj & monitor data
+ * @row                 : Row whose data to dump
+ *
+ * @return None
+ */
+void cam_sync_dump_monitor_array(struct sync_table_row *row);
+
+/**
+ * @brief: Function to add a new entry to the monitor table
+ * @idx                 : Index of row to update
+ * @mutex               : Mutex lock when expand monitor table
+ * @mon_data            : Pointer to the monitor data array
+ * @op                  : Operation id
+ *
+ * @return None
+ */
+void cam_generic_fence_update_monitor_array(int idx,
+	struct mutex *lock,
+	struct cam_generic_fence_monitor_data **mon_data,
+	enum cam_fence_op                op);
+
+/**
+ * @brief: Function to dump monitor array for sync/dma/synx
+ * @obj_info             : Monitor object that needs to be dumped
+ *
+ * @return None
+ */
+void cam_generic_fence_dump_monitor_array(
+	struct cam_generic_fence_monitor_obj_info *obj_info);
+
 #endif /* __CAM_SYNC_UTIL_H__ */