diff options
Diffstat (limited to '')
-rw-r--r-- | include/linux/extcon-provider.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/include/linux/extcon-provider.h b/include/linux/extcon-provider.h new file mode 100644 index 000000000..fa70945f4 --- /dev/null +++ b/include/linux/extcon-provider.h @@ -0,0 +1,134 @@ +/* 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__ */ |