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/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _DPU_HW_BLK_H
#define _DPU_HW_BLK_H
#include <linux/types.h>
#include <linux/list.h>
#include <linux/atomic.h>
struct dpu_hw_blk;
/**
* struct dpu_hw_blk_ops - common hardware block operations
* @start: start operation on first get
* @stop: stop operation on last put
*/
struct dpu_hw_blk_ops {
int (*start)(struct dpu_hw_blk *);
void (*stop)(struct dpu_hw_blk *);
};
/**
* struct dpu_hw_blk - definition of hardware block object
* @list: list of hardware blocks
* @type: hardware block type
* @id: instance id
* @refcount: reference/usage count
*/
struct dpu_hw_blk {
struct list_head list;
u32 type;
int id;
atomic_t refcount;
struct dpu_hw_blk_ops ops;
};
void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
struct dpu_hw_blk_ops *ops);
void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk);
struct dpu_hw_blk *dpu_hw_blk_get(struct dpu_hw_blk *hw_blk, u32 type, int id);
void dpu_hw_blk_put(struct dpu_hw_blk *hw_blk);
#endif /*_DPU_HW_BLK_H */
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