1 #ifndef _LINUX_RESET_CONTROLLER_H_
2 #define _LINUX_RESET_CONTROLLER_H_
4 #include <linux/list.h>
6 struct reset_controller_dev;
9 * struct reset_control_ops
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
16 struct 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);
26 * struct reset_controller_dev - reset controller entity that might
27 * provide multiple reset controls
28 * @ops: a pointer to device specific struct reset_control_ops
29 * @owner: kernel module of the reset controller driver
30 * @list: internal list of reset controller devices
31 * @of_node: corresponding device tree node as phandle target
32 * @of_reset_n_cells: number of cells in reset line specifiers
33 * @of_xlate: translation function to translate from specifier as found in the
34 * device tree to id as given to the reset control ops
35 * @nr_resets: number of reset controls in this reset controller device
37 struct reset_controller_dev {
38 struct reset_control_ops *ops;
40 struct list_head list;
41 struct device_node *of_node;
43 int (*of_xlate)(struct reset_controller_dev *rcdev,
44 const struct of_phandle_args *reset_spec);
45 unsigned int nr_resets;
48 int reset_controller_register(struct reset_controller_dev *rcdev);
49 void reset_controller_unregister(struct reset_controller_dev *rcdev);