diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h new file mode 100644 index 000000000000..0f4ca8af1ec5 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h @@ -0,0 +1,53 @@ +/* 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; +}; + +int 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 */ |