blob: 41a4695fde08ca9414f6c541aaa16077b215d3d2 [file] [log] [blame]
Philipp Zabel61fc4132012-11-19 17:23:13 +01001#ifndef _LINUX_RESET_CONTROLLER_H_
2#define _LINUX_RESET_CONTROLLER_H_
3
4#include <linux/list.h>
5
6struct reset_controller_dev;
7
8/**
9 * struct reset_control_ops
10 *
11 * @reset: for self-deasserting resets, does all necessary
12 * things to reset the device
13 * @assert: manually assert the reset line, if supported
14 * @deassert: manually deassert the reset line, if supported
15 */
16struct reset_control_ops {
17 int (*reset)(struct reset_controller_dev *rcdev, unsigned long id);
18 int (*assert)(struct reset_controller_dev *rcdev, unsigned long id);
19 int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id);
20};
21
22struct module;
23struct device_node;
Stephen Boydd0d44dd2014-01-15 10:47:21 -080024struct of_phandle_args;
Philipp Zabel61fc4132012-11-19 17:23:13 +010025
26/**
27 * struct reset_controller_dev - reset controller entity that might
28 * provide multiple reset controls
29 * @ops: a pointer to device specific struct reset_control_ops
30 * @owner: kernel module of the reset controller driver
31 * @list: internal list of reset controller devices
32 * @of_node: corresponding device tree node as phandle target
33 * @of_reset_n_cells: number of cells in reset line specifiers
34 * @of_xlate: translation function to translate from specifier as found in the
35 * device tree to id as given to the reset control ops
36 * @nr_resets: number of reset controls in this reset controller device
37 */
38struct reset_controller_dev {
39 struct reset_control_ops *ops;
40 struct module *owner;
41 struct list_head list;
42 struct device_node *of_node;
43 int of_reset_n_cells;
44 int (*of_xlate)(struct reset_controller_dev *rcdev,
45 const struct of_phandle_args *reset_spec);
46 unsigned int nr_resets;
47};
48
49int reset_controller_register(struct reset_controller_dev *rcdev);
50void reset_controller_unregister(struct reset_controller_dev *rcdev);
51
52#endif