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 * @status: return the status of the reset line, if supported 16 */ 17struct 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); 21 int (*status)(struct reset_controller_dev *rcdev, unsigned long id); 22}; 23 24struct module; 25struct device_node; 26struct of_phandle_args; 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 34 * @of_node: corresponding device tree node as phandle target 35 * @of_reset_n_cells: number of cells in reset line specifiers 36 * @of_xlate: translation function to translate from specifier as found in the 37 * device tree to id as given to the reset control ops 38 * @nr_resets: number of reset controls in this reset controller device 39 */ 40struct reset_controller_dev { 41 const struct reset_control_ops *ops; 42 struct module *owner; 43 struct list_head list; 44 struct device_node *of_node; 45 int of_reset_n_cells; 46 int (*of_xlate)(struct reset_controller_dev *rcdev, 47 const struct of_phandle_args *reset_spec); 48 unsigned int nr_resets; 49}; 50 51int reset_controller_register(struct reset_controller_dev *rcdev); 52void reset_controller_unregister(struct reset_controller_dev *rcdev); 53 54#endif 55