| /* 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__ */ |