[mirror_ubuntu-artful-kernel.git] / include / linux / reset-controller.h

#ifndef _LINUX_RESET_CONTROLLER_H_
#define _LINUX_RESET_CONTROLLER_H_

#include <linux/list.h>

struct reset_controller_dev;

/**
 * struct reset_control_ops
 *
 * @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_controller_dev *rcdev, unsigned long id);
	int (*assert)(struct reset_controller_dev *rcdev, unsigned long id);
	int (*deassert)(struct reset_controller_dev *rcdev, unsigned long id);
	int (*status)(struct reset_controller_dev *rcdev, unsigned long id);
};

struct module;
struct device_node;
struct of_phandle_args;

/**
 * struct reset_controller_dev - 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
 * @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_controller_dev {
	const struct reset_control_ops *ops;
	struct module *owner;
	struct list_head list;
	struct list_head reset_control_head;
	struct device_node *of_node;
	int of_reset_n_cells;
	int (*of_xlate)(struct reset_controller_dev *rcdev,
			const struct of_phandle_args *reset_spec);
	unsigned int nr_resets;
};

int reset_controller_register(struct reset_controller_dev *rcdev);
void reset_controller_unregister(struct reset_controller_dev *rcdev);

struct device;
int devm_reset_controller_register(struct device *dev,
				   struct reset_controller_dev *rcdev);

#endif
Commit	Line	Data
61fc4131 PZ	1	#ifndef _LINUX_RESET_CONTROLLER_H_
	2	#define _LINUX_RESET_CONTROLLER_H_
	3
	4	#include <linux/list.h>
	5
	6	struct 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
729de41b	15	* @status: return the status of the reset line, if supported
61fc4131 PZ	16	*/
	17	struct reset_control_ops {
	18	int (reset)(struct reset_controller_dev rcdev, unsigned long id);
	19	int (assert)(struct reset_controller_dev rcdev, unsigned long id);
	20	int (deassert)(struct reset_controller_dev rcdev, unsigned long id);
729de41b	21	int (status)(struct reset_controller_dev rcdev, unsigned long id);
61fc4131 PZ	22	};
	23
	24	struct module;
	25	struct device_node;
d0d44dd4	26	struct of_phandle_args;
61fc4131 PZ	27
	28	/**
	29	* struct reset_controller_dev - reset controller entity that might
	30	* provide multiple reset controls
	31	* @ops: a pointer to device specific struct reset_control_ops
	32	* @owner: kernel module of the reset controller driver
	33	* @list: internal list of reset controller devices
c15ddec2	34	* @reset_control_head: head of internal list of requested reset controls
61fc4131 PZ	35	* @of_node: corresponding device tree node as phandle target
	36	* @of_reset_n_cells: number of cells in reset line specifiers
	37	* @of_xlate: translation function to translate from specifier as found in the
	38	* device tree to id as given to the reset control ops
	39	* @nr_resets: number of reset controls in this reset controller device
	40	*/
	41	struct reset_controller_dev {
203d4f34	42	const struct reset_control_ops *ops;
61fc4131 PZ	43	struct module *owner;
61fc4131 PZ	44	struct list_head list;
c15ddec2	45	struct list_head reset_control_head;
61fc4131 PZ	46	struct device_node *of_node;
	47	int of_reset_n_cells;
	48	int (of_xlate)(struct reset_controller_dev rcdev,
	49	const struct of_phandle_args *reset_spec);
	50	unsigned int nr_resets;
	51	};
	52
	53	int reset_controller_register(struct reset_controller_dev *rcdev);
	54	void reset_controller_unregister(struct reset_controller_dev *rcdev);
	55
8d5b5d5c MY	56	struct device;
	57	int devm_reset_controller_register(struct device *dev,
	58	struct reset_controller_dev *rcdev);
	59
61fc4131	60	#endif