05349feaa2
Bring over camera driver changes as of msm-4.19 commit 5a5551a7 (Merge "msm: camera: reqmgr: Fix CRM shift one req issue"). Change-Id: Ic0c2b2d74d1b3470c1c51d98228e312fb13c501a Signed-off-by: Jigarkumar Zala <jzala@codeaurora.org>
146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
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*/
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#ifndef __CAM_SYNC_UTIL_H__
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#define __CAM_SYNC_UTIL_H__
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#include <cam_sync_api.h>
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#include "cam_sync_private.h"
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#include "cam_debug_util.h"
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extern struct sync_device *sync_dev;
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/**
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* @brief: Finds an empty row in the sync table and sets its corresponding bit
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* in the bit array
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*
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* @param sync_dev : Pointer to the sync device instance
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* @param idx : Pointer to an long containing the index found in the bit
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* array
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*
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* @return Status of operation. Negative in case of error. Zero otherwise.
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*/
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int cam_sync_util_find_and_set_empty_row(struct sync_device *sync_dev,
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long *idx);
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/**
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* @brief: Function to initialize an empty row in the sync table. This should be
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* called only for individual sync objects.
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*
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* @param table : Pointer to the sync objects table
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* @param idx : Index of row to initialize
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* @param name : Optional string representation of the sync object. Should be
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* 63 characters or less
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* @param type : type of row to be initialized
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* @return Status of operation. Negative in case of error. Zero otherwise.
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*/
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int cam_sync_init_row(struct sync_table_row *table,
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uint32_t idx, const char *name, uint32_t type);
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/**
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* @brief: Function to uninitialize a row in the sync table
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*
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* @param table : Pointer to the sync objects table
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* @param idx : Index of row to initialize
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*
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* @return Status of operation. Negative in case of error. Zero otherwise.
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*/
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int cam_sync_deinit_object(struct sync_table_row *table, uint32_t idx);
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/**
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* @brief: Function to initialize a row in the sync table when the object is a
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* group object, also known as a merged sync object
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*
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* @param table : Pointer to the sync objects table
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* @param idx : Index of row to initialize
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* @param sync_objs : Array of sync objects which will merged
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* or grouped together
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* @param num_objs : Number of sync objects in the array
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*
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* @return Status of operation. Negative in case of error. Zero otherwise.
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*/
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int cam_sync_init_group_object(struct sync_table_row *table,
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uint32_t idx,
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uint32_t *sync_objs,
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uint32_t num_objs);
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int cam_sync_deinit_object(struct sync_table_row *table, uint32_t idx);
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/**
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* @brief: Function to dispatch a kernel callback for a sync callback
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*
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* @param cb_dispatch_work : Pointer to the work_struct that needs to be
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* dispatched
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*
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* @return None
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*/
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void cam_sync_util_cb_dispatch(struct work_struct *cb_dispatch_work);
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/**
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* @brief: Function to dispatch callbacks for a signaled sync object
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*
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* @sync_obj : Sync object that is signaled
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* @status : Status of the signaled object
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*
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* @return None
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*/
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void cam_sync_util_dispatch_signaled_cb(int32_t sync_obj,
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uint32_t status);
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/**
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* @brief: Function to send V4L event to user space
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* @param id : V4L event id to send
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* @param sync_obj : Sync obj for which event needs to be sent
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* @param status : Status of the event
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* @payload : Payload that needs to be sent to user space
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* @len : Length of the payload
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*
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* @return None
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*/
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void cam_sync_util_send_v4l2_event(uint32_t id,
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uint32_t sync_obj,
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int status,
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void *payload,
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int len);
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/**
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* @brief: Function which gets the next state of the sync object based on the
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* current state and the new state
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*
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* @param current_state : Current state of the sync object
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* @param new_state : New state of the sync object
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*
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* @return Next state of the sync object
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*/
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int cam_sync_util_update_parent_state(struct sync_table_row *parent_row,
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int new_state);
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/**
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* @brief: Function to clean up the children of a sync object
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* @row : Row whose child list to clean
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* @list_clean_type : Clean specific object or clean all objects
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* @sync_obj : Sync object to be clean if list clean type is
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* SYNC_LIST_CLEAN_ONE
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*
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* @return None
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*/
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void cam_sync_util_cleanup_children_list(struct sync_table_row *row,
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uint32_t list_clean_type, uint32_t sync_obj);
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/**
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* @brief: Function to clean up the parents of a sync object
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* @row : Row whose parent list to clean
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* @list_clean_type : Clean specific object or clean all objects
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* @sync_obj : Sync object to be clean if list clean type is
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* SYNC_LIST_CLEAN_ONE
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*
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* @return None
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*/
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void cam_sync_util_cleanup_parents_list(struct sync_table_row *row,
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uint32_t list_clean_type, uint32_t sync_obj);
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#endif /* __CAM_SYNC_UTIL_H__ */
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