135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* 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__ */
|