1 /* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
16 #include <linux/types.h>
17 #include <linux/list.h>
18 #include <linux/atomic.h>
23 * struct dpu_hw_blk_ops - common hardware block operations
24 * @start: start operation on first get
25 * @stop: stop operation on last put
27 struct dpu_hw_blk_ops {
28 int (*start)(struct dpu_hw_blk *);
29 void (*stop)(struct dpu_hw_blk *);
33 * struct dpu_hw_blk - definition of hardware block object
34 * @list: list of hardware blocks
35 * @type: hardware block type
37 * @refcount: reference/usage count
40 struct list_head list;
44 struct dpu_hw_blk_ops ops;
47 int dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
48 struct dpu_hw_blk_ops *ops);
49 void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk);
51 struct dpu_hw_blk *dpu_hw_blk_get(struct dpu_hw_blk *hw_blk, u32 type, int id);
52 void dpu_hw_blk_put(struct dpu_hw_blk *hw_blk);
53 #endif /*_DPU_HW_BLK_H */