/* SPDX-License-Identifier: GPL-2.0-only */ /* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */ #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 */