blob: 4de5cc9b0c941d1ef78881839bd1b81b8a420225 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016 Maxime Ripard. All rights reserved.
*/
#ifndef _HAL_RESET_H_
#define _HAL_RESET_H_
#include <aw_list.h>
#include <sunxi_hal_common.h>
#include <platform_rst.h>
typedef enum {
HAL_SUNXI_RESET = 0,
HAL_SUNXI_R_RESET,
HAL_SUNXI_RESET_NUMBER,
} hal_reset_type_t;
typedef u32 hal_reset_id_t;
struct reset_control_dev;
/**
* struct reset_control_ops - reset controller driver callbacks
*
* @reset: for self-deasserting resets, does all necessary
* things to reset the device
* @assert: manually assert the reset line, if supported
* @deassert: manually deassert the reset line, if supported
* @status: return the status of the reset line, if supported
*/
struct reset_control_ops {
int (*reset)(struct reset_control_dev *rcdev, hal_reset_id_t id);
int (*assert)(struct reset_control_dev *rcdev, hal_reset_id_t id);
int (*deassert)(struct reset_control_dev *rcdev, hal_reset_id_t id);
int (*status)(struct reset_control_dev *rcdev, hal_reset_id_t id);
};
/**
* struct reset_control - reset controller entity that might
* provide multiple reset controls
* @ops: a pointer to device specific struct reset_control_ops
* @owner: kernel module of the reset controller driver
* @list: internal list of reset controller devices
* @reset_control_head: head of internal list of requested reset controls
* @dev: corresponding driver model device struct
* @of_node: corresponding device tree node as phandle target
* @of_reset_n_cells: number of cells in reset line specifiers
* @of_xlate: translation function to translate from specifier as found in the
* device tree to id as given to the reset control ops
* @nr_resets: number of reset controls in this reset controller device
*/
struct reset_control_dev {
const struct reset_control_ops *ops;
hal_reset_type_t type;
u32 nr_resets;
struct list_head node;
};
struct reset_control {
struct reset_control_dev *rcdev;
u32 enable_count;
hal_reset_id_t id;
};
int reset_control_register(struct reset_control_dev *rcdev); //for reset system
int reset_control_unregister(struct reset_control *reset); //for reset system
struct reset_control *hal_reset_control_get(hal_reset_type_t type, hal_reset_id_t id);
int hal_reset_control_put(struct reset_control *reset);
int hal_reset_control_set(struct reset_control *reset); //for other module
int hal_reset_control_deassert(struct reset_control *reset); //for other module
int hal_reset_control_assert(struct reset_control *reset); //for other_module
int hal_reset_control_reset(struct reset_control *reset); //for other_module
int hal_reset_control_status(struct reset_control *reset); //for other_module
#endif
|
