/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DPU_HW_BLK_H
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#define _DPU_HW_BLK_H
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/atomic.h>
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struct dpu_hw_blk;
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/**
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* struct dpu_hw_blk_ops - common hardware block operations
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* @start: start operation on first get
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* @stop: stop operation on last put
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*/
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struct dpu_hw_blk_ops {
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int (*start)(struct dpu_hw_blk *);
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void (*stop)(struct dpu_hw_blk *);
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};
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/**
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* struct dpu_hw_blk - definition of hardware block object
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* @list: list of hardware blocks
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* @type: hardware block type
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* @id: instance id
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* @refcount: reference/usage count
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*/
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struct dpu_hw_blk {
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struct list_head list;
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u32 type;
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int id;
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atomic_t refcount;
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struct dpu_hw_blk_ops ops;
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};
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void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
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struct dpu_hw_blk_ops *ops);
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void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk);
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struct dpu_hw_blk *dpu_hw_blk_get(struct dpu_hw_blk *hw_blk, u32 type, int id);
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void dpu_hw_blk_put(struct dpu_hw_blk *hw_blk);
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#endif /*_DPU_HW_BLK_H */
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