name : extcon-provider.h /* SPDX-License-Identifier: GPL-2.0-only */ /* * External Connector (extcon) framework * - linux/include/linux/extcon-provider.h for extcon provider device driver. * * Copyright (C) 2017 Samsung Electronics * Author: Chanwoo Choi <cw00.choi@samsung.com> */ #ifndef __LINUX_EXTCON_PROVIDER_H__ #define __LINUX_EXTCON_PROVIDER_H__ #include <linux/extcon.h> struct extcon_dev; #if IS_ENABLED(CONFIG_EXTCON) /* Following APIs register/unregister the extcon device. */ int extcon_dev_register(struct extcon_dev *edev); void extcon_dev_unregister(struct extcon_dev *edev); int devm_extcon_dev_register(struct device *dev, struct extcon_dev *edev); void devm_extcon_dev_unregister(struct device *dev, struct extcon_dev *edev); /* Following APIs allocate/free the memory of the extcon device. */ struct extcon_dev *extcon_dev_allocate(const unsigned int *cable); void extcon_dev_free(struct extcon_dev *edev); struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, const unsigned int *cable); void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev); /* Synchronize the state and property value for each external connector. */ int extcon_sync(struct extcon_dev *edev, unsigned int id); /* * Following APIs set the connected state of each external connector. * The 'id' argument indicates the defined external connector. */ int extcon_set_state(struct extcon_dev *edev, unsigned int id, bool state); int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, bool state); /* * Following APIs set the property of each external connector. * The 'id' argument indicates the defined external connector * and the 'prop' indicates the extcon property. * * And extcon_set_property_capability() set the capability of the property * for each external connector. They are used to set the capability of the * property of each external connector based on the id and property. */ int extcon_set_property(struct extcon_dev *edev, unsigned int id, unsigned int prop, union extcon_property_value prop_val); int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id, unsigned int prop, union extcon_property_value prop_val); int extcon_set_property_capability(struct extcon_dev *edev, unsigned int id, unsigned int prop); #else /* CONFIG_EXTCON */ static inline int extcon_dev_register(struct extcon_dev *edev) { return 0; } static inline void extcon_dev_unregister(struct extcon_dev *edev) { } static inline int devm_extcon_dev_register(struct device *dev, struct extcon_dev *edev) { return -EINVAL; } static inline void devm_extcon_dev_unregister(struct device *dev, struct extcon_dev *edev) { } static inline struct extcon_dev *extcon_dev_allocate(const unsigned int *cable) { return ERR_PTR(-ENOSYS); } static inline void extcon_dev_free(struct extcon_dev *edev) { } static inline struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, const unsigned int *cable) { return ERR_PTR(-ENOSYS); } static inline void devm_extcon_dev_free(struct extcon_dev *edev) { } static inline int extcon_set_state(struct extcon_dev *edev, unsigned int id, bool state) { return 0; } static inline int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, bool state) { return 0; } static inline int extcon_sync(struct extcon_dev *edev, unsigned int id) { return 0; } static inline int extcon_set_property(struct extcon_dev *edev, unsigned int id, unsigned int prop, union extcon_property_value prop_val) { return 0; } static inline int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id, unsigned int prop, union extcon_property_value prop_val) { return 0; } static inline int extcon_set_property_capability(struct extcon_dev *edev, unsigned int id, unsigned int prop) { return 0; } #endif /* CONFIG_EXTCON */ #endif /* __LINUX_EXTCON_PROVIDER_H__ */