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/*
* 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>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#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. */
extern int extcon_dev_register(struct extcon_dev *edev);
extern void extcon_dev_unregister(struct extcon_dev *edev);
extern int devm_extcon_dev_register(struct device *dev,
struct extcon_dev *edev);
extern void devm_extcon_dev_unregister(struct device *dev,
struct extcon_dev *edev);
/* Following APIs allocate/free the memory of the extcon device. */
extern struct extcon_dev *extcon_dev_allocate(const unsigned int *cable);
extern void extcon_dev_free(struct extcon_dev *edev);
extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
const unsigned int *cable);
extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);
/* Synchronize the state and property value for each external connector. */
extern 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.
*/
extern int extcon_set_state(struct extcon_dev *edev, unsigned int id,
bool state);
extern 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.
*/
extern int extcon_set_property(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value prop_val);
extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id,
unsigned int prop,
union extcon_property_value prop_val);
extern 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__ */
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