1#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; 24 25/** 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 36 */ 37struct reset_controller_dev { 38 struct reset_control_ops *ops; 39 struct module *owner; 40 struct list_head list; 41 struct device_node *of_node; 42 int of_reset_n_cells; 43 int (*of_xlate)(struct reset_controller_dev *rcdev, 44 const struct of_phandle_args *reset_spec); 45 unsigned int nr_resets; 46}; 47 48int reset_controller_register(struct reset_controller_dev *rcdev); 49void reset_controller_unregister(struct reset_controller_dev *rcdev); 50 51#endif 52