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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_RESET_CONTROLLER_H_#define _LINUX_RESET_CONTROLLER_H_
#include <linux/list.h>#include <linux/mutex.h>
struct fwnode_handle;struct fwnode_reference_args;struct reset_controller_dev;
/** * struct reset_control_ops - reset controller driver callbacks * * @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 * @dev: corresponding driver model device struct * @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 * @fwnode: firmware node associated with this device * @fwnode_reset_n_cells: number of cells in reset line specifiers * @fwnode_xlate: translation function to translate from firmware specifier to * id as given to the reset control ops, defaults to * :c:func:`fwnode_reset_simple_xlate` * @nr_resets: number of reset controls in this reset controller device * @lock: protects the reset control list from concurrent access */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 *dev; 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); struct fwnode_handle *fwnode; int fwnode_reset_n_cells; int (*fwnode_xlate)(struct reset_controller_dev *rcdev, const struct fwnode_reference_args *reset_spec); unsigned int nr_resets; struct mutex lock;};
#if IS_ENABLED(CONFIG_RESET_CONTROLLER)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);#elsestatic inline int reset_controller_register(struct reset_controller_dev *rcdev){ return 0;}
static inline void reset_controller_unregister(struct reset_controller_dev *rcdev){}
static inline int devm_reset_controller_register(struct device *dev, struct reset_controller_dev *rcdev){ return 0;}#endif
#endif