[mirror_ubuntu-zesty-kernel.git] / include / linux / extcon.h

/*
 *  External connector (extcon) class driver
 *
 * Copyright (C) 2015 Samsung Electronics
 * Author: Chanwoo Choi <cw00.choi@samsung.com>
 *
 * Copyright (C) 2012 Samsung Electronics
 * Author: Donggeun Kim <dg77.kim@samsung.com>
 * Author: MyungJoo Ham <myungjoo.ham@samsung.com>
 *
 * based on switch class driver
 * Copyright (C) 2008 Google, Inc.
 * Author: Mike Lockwood <lockwood@android.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_H__
#define __LINUX_EXTCON_H__

#include <linux/device.h>
#include <linux/notifier.h>
#include <linux/sysfs.h>

enum extcon {
	EXTCON_NONE		= 0x0,

	/* USB external connector */
	EXTCON_USB		= 0x1,
	EXTCON_USB_HOST		= 0x2,

	/* Charger external connector */
	EXTCON_TA		= 0x10,
	EXTCON_FAST_CHARGER	= 0x11,
	EXTCON_SLOW_CHARGER	= 0x12,
	EXTCON_CHARGE_DOWNSTREAM = 0x13,

	/* Audio/Video external connector */
	EXTCON_LINE_IN		= 0x20,
	EXTCON_LINE_OUT		= 0x21,
	EXTCON_MICROPHONE	= 0x22,
	EXTCON_HEADPHONE	= 0x23,

	EXTCON_HDMI		= 0x30,
	EXTCON_MHL		= 0x31,
	EXTCON_DVI		= 0x32,
	EXTCON_VGA		= 0x33,
	EXTCON_SPDIF_IN		= 0x34,
	EXTCON_SPDIF_OUT	= 0x35,
	EXTCON_VIDEO_IN		= 0x36,
	EXTCON_VIDEO_OUT	= 0x37,

	/* Etc external connector */
	EXTCON_DOCK		= 0x50,
	EXTCON_JIG		= 0x51,
	EXTCON_MECHANICAL	= 0x52,

	EXTCON_END,
};

struct extcon_cable;

/**
 * struct extcon_dev - An extcon device represents one external connector.
 * @name:		The name of this extcon device. Parent device name is
 *			used if NULL.
 * @supported_cable:	Array of supported cable names ending with EXTCON_NONE.
 *			If supported_cable is NULL, cable name related APIs
 *			are disabled.
 * @mutually_exclusive:	Array of mutually exclusive set of cables that cannot
 *			be attached simultaneously. The array should be
 *			ending with NULL or be NULL (no mutually exclusive
 *			cables). For example, if it is { 0x7, 0x30, 0}, then,
 *			{0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot
 *			be attached simulataneously. {0x7, 0} is equivalent to
 *			{0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there
 *			can be no simultaneous connections.
 * @print_name:		An optional callback to override the method to print the
 *			name of the extcon device.
 * @print_state:	An optional callback to override the method to print the
 *			status of the extcon device.
 * @dev:		Device of this extcon.
 * @state:		Attach/detach state of this extcon. Do not provide at
 *			register-time.
 * @nh:			Notifier for the state change events from this extcon
 * @entry:		To support list of extcon devices so that users can
 *			search for extcon devices based on the extcon name.
 * @lock:
 * @max_supported:	Internal value to store the number of cables.
 * @extcon_dev_type:	Device_type struct to provide attribute_groups
 *			customized for each extcon device.
 * @cables:		Sysfs subdirectories. Each represents one cable.
 *
 * In most cases, users only need to provide "User initializing data" of
 * this struct when registering an extcon. In some exceptional cases,
 * optional callbacks may be needed. However, the values in "internal data"
 * are overwritten by register function.
 */
struct extcon_dev {
	/* Optional user initializing data */
	const char *name;
	const enum extcon *supported_cable;
	const u32 *mutually_exclusive;

	/* Optional callbacks to override class functions */
	ssize_t	(*print_name)(struct extcon_dev *edev, char *buf);
	ssize_t	(*print_state)(struct extcon_dev *edev, char *buf);

	/* Internal data. Please do not set. */
	struct device dev;
	struct raw_notifier_head nh;
	struct list_head entry;
	int max_supported;
	spinlock_t lock;	/* could be called by irq handler */
	u32 state;

	/* /sys/class/extcon/.../cable.n/... */
	struct device_type extcon_dev_type;
	struct extcon_cable *cables;

	/* /sys/class/extcon/.../mutually_exclusive/... */
	struct attribute_group attr_g_muex;
	struct attribute **attrs_muex;
	struct device_attribute *d_attrs_muex;
};

/**
 * struct extcon_cable - An internal data for each cable of extcon device.
 * @edev:		The extcon device
 * @cable_index:	Index of this cable in the edev
 * @attr_g:		Attribute group for the cable
 * @attr_name:		"name" sysfs entry
 * @attr_state:		"state" sysfs entry
 * @attrs:		Array pointing to attr_name and attr_state for attr_g
 */
struct extcon_cable {
	struct extcon_dev *edev;
	int cable_index;

	struct attribute_group attr_g;
	struct device_attribute attr_name;
	struct device_attribute attr_state;

	struct attribute *attrs[3]; /* to be fed to attr_g.attrs */
};

/**
 * struct extcon_specific_cable_nb - An internal data for
 *				     extcon_register_interest().
 * @internal_nb:	A notifier block bridging extcon notifier
 *			and cable notifier.
 * @user_nb:		user provided notifier block for events from
 *			a specific cable.
 * @cable_index:	the target cable.
 * @edev:		the target extcon device.
 * @previous_value:	the saved previous event value.
 */
struct extcon_specific_cable_nb {
	struct notifier_block internal_nb;
	struct notifier_block *user_nb;
	int cable_index;
	struct extcon_dev *edev;
	unsigned long previous_value;
};

#if IS_ENABLED(CONFIG_EXTCON)

/*
 * Following APIs are for notifiers or configurations.
 * Notifiers are the external port and connection devices.
 */
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);
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);

/*
 * Following APIs control the memory of extcon device.
 */
extern struct extcon_dev *extcon_dev_allocate(const enum extcon *cable);
extern void extcon_dev_free(struct extcon_dev *edev);
extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev,
						   const enum extcon *cable);
extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev);

/*
 * get/set/update_state access the 32b encoded state value, which represents
 * states of all possible cables of the multistate port. For example, if one
 * calls extcon_set_state(edev, 0x7), it may mean that all the three cables
 * are attached to the port.
 */
static inline u32 extcon_get_state(struct extcon_dev *edev)
{
	return edev->state;
}

extern int extcon_set_state(struct extcon_dev *edev, u32 state);
extern int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state);

/*
 * get/set_cable_state access each bit of the 32b encoded state value.
 * They are used to access the status of each cable based on the cable_name.
 */
extern int extcon_get_cable_state_(struct extcon_dev *edev, enum extcon id);
extern int extcon_set_cable_state_(struct extcon_dev *edev, enum extcon id,
				   bool cable_state);

extern int extcon_get_cable_state(struct extcon_dev *edev,
				  const char *cable_name);
extern int extcon_set_cable_state(struct extcon_dev *edev,
				  const char *cable_name, bool cable_state);

/*
 * Following APIs are for notifiees (those who want to be notified)
 * to register a callback for events from a specific cable of the extcon.
 * Notifiees are the connected device drivers wanting to get notified by
 * a specific external port of a connection device.
 */
extern int extcon_register_interest(struct extcon_specific_cable_nb *obj,
				    const char *extcon_name,
				    const char *cable_name,
				    struct notifier_block *nb);
extern int extcon_unregister_interest(struct extcon_specific_cable_nb *nb);

/*
 * Following APIs are to monitor every action of a notifier.
 * Registrar gets notified for every external port of a connection device.
 * Probably this could be used to debug an action of notifier; however,
 * we do not recommend to use this for normal 'notifiee' device drivers who
 * want to be notified by a specific external port of the notifier.
 */
extern int extcon_register_notifier(struct extcon_dev *edev,
				    struct notifier_block *nb);
extern int extcon_unregister_notifier(struct extcon_dev *edev,
				      struct notifier_block *nb);

/*
 * Following API get the extcon device from devicetree.
 * This function use phandle of devicetree to get extcon device directly.
 */
extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
						     int index);

/* Following API to get information of extcon device */
extern const char *extcon_get_edev_name(struct extcon_dev *edev);

#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 enum extcon *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 enum extcon *cable)
{
	return ERR_PTR(-ENOSYS);
}

static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }

static inline u32 extcon_get_state(struct extcon_dev *edev)
{
	return 0;
}

static inline int extcon_set_state(struct extcon_dev *edev, u32 state)
{
	return 0;
}

static inline int extcon_update_state(struct extcon_dev *edev, u32 mask,
				       u32 state)
{
	return 0;
}

static inline int extcon_get_cable_state_(struct extcon_dev *edev,
					  enum extcon id)
{
	return 0;
}

static inline int extcon_set_cable_state_(struct extcon_dev *edev,
					  enum extcon id, bool cable_state)
{
	return 0;
}

static inline int extcon_get_cable_state(struct extcon_dev *edev,
			const char *cable_name)
{
	return 0;
}

static inline int extcon_set_cable_state(struct extcon_dev *edev,
			const char *cable_name, int state)
{
	return 0;
}

static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name)
{
	return NULL;
}

static inline int extcon_register_notifier(struct extcon_dev *edev,
					   struct notifier_block *nb)
{
	return 0;
}

static inline int extcon_unregister_notifier(struct extcon_dev *edev,
					     struct notifier_block *nb)
{
	return 0;
}

static inline int extcon_register_interest(struct extcon_specific_cable_nb *obj,
					   const char *extcon_name,
					   const char *cable_name,
					   struct notifier_block *nb)
{
	return 0;
}

static inline int extcon_unregister_interest(struct extcon_specific_cable_nb
						    *obj)
{
	return 0;
}

static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
							    int index)
{
	return ERR_PTR(-ENODEV);
}
#endif /* CONFIG_EXTCON */
#endif /* __LINUX_EXTCON_H__ */
Commit	Line	Data
de55d871 MH	1	/*
	2	* External connector (extcon) class driver
	3	*
2a9de9c0 CC	4	* Copyright (C) 2015 Samsung Electronics
	5	* Author: Chanwoo Choi <cw00.choi@samsung.com>
	6	*
de55d871 MH	7	* Copyright (C) 2012 Samsung Electronics
	8	* Author: Donggeun Kim <dg77.kim@samsung.com>
	9	* Author: MyungJoo Ham <myungjoo.ham@samsung.com>
	10	*
	11	* based on switch class driver
	12	* Copyright (C) 2008 Google, Inc.
	13	* Author: Mike Lockwood <lockwood@android.com>
	14	*
	15	* This software is licensed under the terms of the GNU General Public
	16	* License version 2, as published by the Free Software Foundation, and
	17	* may be copied, distributed, and modified under those terms.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	*/
	25
	26	#ifndef __LINUX_EXTCON_H__
	27	#define __LINUX_EXTCON_H__
	28
d851718f	29	#include <linux/device.h>
74c5d09b	30	#include <linux/notifier.h>
d851718f	31	#include <linux/sysfs.h>
806d9dd7	32
2a9de9c0 CC	33	enum extcon {
	34	EXTCON_NONE = 0x0,
	35
	36	/* USB external connector */
	37	EXTCON_USB = 0x1,
	38	EXTCON_USB_HOST = 0x2,
	39
	40	/* Charger external connector */
	41	EXTCON_TA = 0x10,
	42	EXTCON_FAST_CHARGER = 0x11,
	43	EXTCON_SLOW_CHARGER = 0x12,
	44	EXTCON_CHARGE_DOWNSTREAM = 0x13,
	45
	46	/* Audio/Video external connector */
	47	EXTCON_LINE_IN = 0x20,
	48	EXTCON_LINE_OUT = 0x21,
	49	EXTCON_MICROPHONE = 0x22,
	50	EXTCON_HEADPHONE = 0x23,
	51
	52	EXTCON_HDMI = 0x30,
	53	EXTCON_MHL = 0x31,
	54	EXTCON_DVI = 0x32,
	55	EXTCON_VGA = 0x33,
	56	EXTCON_SPDIF_IN = 0x34,
	57	EXTCON_SPDIF_OUT = 0x35,
	58	EXTCON_VIDEO_IN = 0x36,
	59	EXTCON_VIDEO_OUT = 0x37,
	60
	61	/* Etc external connector */
	62	EXTCON_DOCK = 0x50,
	63	EXTCON_JIG = 0x51,
	64	EXTCON_MECHANICAL = 0x52,
	65
	66	EXTCON_END,
806d9dd7	67	};
806d9dd7 MH	68
	69	struct extcon_cable;
	70
de55d871 MH	71	/**
de55d871 MH	72	* struct extcon_dev - An extcon device represents one external connector.
a75e1c73 CC	73	* @name: The name of this extcon device. Parent device name is
a75e1c73 CC	74	* used if NULL.
2a9de9c0	75	* @supported_cable: Array of supported cable names ending with EXTCON_NONE.
806d9dd7 MH	76	* If supported_cable is NULL, cable name related APIs
806d9dd7 MH	77	* are disabled.
df072eb9	78	* @mutually_exclusive: Array of mutually exclusive set of cables that cannot
bde68e60 MH	79	* be attached simultaneously. The array should be
	80	* ending with NULL or be NULL (no mutually exclusive
	81	* cables). For example, if it is { 0x7, 0x30, 0}, then,
	82	* {0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot
	83	* be attached simulataneously. {0x7, 0} is equivalent to
	84	* {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there
	85	* can be no simultaneous connections.
a75e1c73 CC	86	* @print_name: An optional callback to override the method to print the
a75e1c73 CC	87	* name of the extcon device.
df072eb9	88	* @print_state: An optional callback to override the method to print the
a75e1c73	89	* status of the extcon device.
dae61651	90	* @dev: Device of this extcon.
a75e1c73 CC	91	* @state: Attach/detach state of this extcon. Do not provide at
	92	* register-time.
	93	* @nh: Notifier for the state change events from this extcon
b9ec23c0 CC	94	* @entry: To support list of extcon devices so that users can
b9ec23c0 CC	95	* search for extcon devices based on the extcon name.
df072eb9 MH	96	* @lock:
	97	* @max_supported: Internal value to store the number of cables.
	98	* @extcon_dev_type: Device_type struct to provide attribute_groups
806d9dd7	99	* customized for each extcon device.
a75e1c73	100	* @cables: Sysfs subdirectories. Each represents one cable.
de55d871 MH	101	*
	102	* In most cases, users only need to provide "User initializing data" of
	103	* this struct when registering an extcon. In some exceptional cases,
	104	* optional callbacks may be needed. However, the values in "internal data"
	105	* are overwritten by register function.
	106	*/
	107	struct extcon_dev {
a75e1c73 CC	108	/* Optional user initializing data */
a75e1c73 CC	109	const char *name;
2a9de9c0	110	const enum extcon *supported_cable;
a75e1c73	111	const u32 *mutually_exclusive;
de55d871	112
a75e1c73	113	/* Optional callbacks to override class functions */
de55d871 MH	114	ssize_t (print_name)(struct extcon_dev edev, char *buf);
	115	ssize_t (print_state)(struct extcon_dev edev, char *buf);
	116
a75e1c73	117	/* Internal data. Please do not set. */
dae61651	118	struct device dev;
74c5d09b DK	119	struct raw_notifier_head nh;
74c5d09b DK	120	struct list_head entry;
806d9dd7	121	int max_supported;
a75e1c73 CC	122	spinlock_t lock; /* could be called by irq handler */
a75e1c73 CC	123	u32 state;
806d9dd7 MH	124
	125	/* /sys/class/extcon/.../cable.n/... */
	126	struct device_type extcon_dev_type;
	127	struct extcon_cable *cables;
a75e1c73	128
bde68e60 MH	129	/* /sys/class/extcon/.../mutually_exclusive/... */
	130	struct attribute_group attr_g_muex;
	131	struct attribute **attrs_muex;
	132	struct device_attribute *d_attrs_muex;
806d9dd7 MH	133	};
	134
	135	/**
a75e1c73 CC	136	* struct extcon_cable - An internal data for each cable of extcon device.
a75e1c73 CC	137	* @edev: The extcon device
df072eb9	138	* @cable_index: Index of this cable in the edev
a75e1c73 CC	139	* @attr_g: Attribute group for the cable
	140	* @attr_name: "name" sysfs entry
	141	* @attr_state: "state" sysfs entry
	142	* @attrs: Array pointing to attr_name and attr_state for attr_g
806d9dd7 MH	143	*/
	144	struct extcon_cable {
	145	struct extcon_dev *edev;
	146	int cable_index;
	147
	148	struct attribute_group attr_g;
	149	struct device_attribute attr_name;
	150	struct device_attribute attr_state;
	151
	152	struct attribute attrs[3]; / to be fed to attr_g.attrs */
	153	};
	154
	155	/**
	156	* struct extcon_specific_cable_nb - An internal data for
a75e1c73 CC	157	* extcon_register_interest().
	158	* @internal_nb: A notifier block bridging extcon notifier
	159	* and cable notifier.
	160	* @user_nb: user provided notifier block for events from
	161	* a specific cable.
df072eb9	162	* @cable_index: the target cable.
a75e1c73	163	* @edev: the target extcon device.
df072eb9	164	* @previous_value: the saved previous event value.
806d9dd7 MH	165	*/
	166	struct extcon_specific_cable_nb {
	167	struct notifier_block internal_nb;
	168	struct notifier_block *user_nb;
	169	int cable_index;
	170	struct extcon_dev *edev;
	171	unsigned long previous_value;
de55d871 MH	172	};
	173
	174	#if IS_ENABLED(CONFIG_EXTCON)
74c5d09b DK	175
	176	/*
	177	* Following APIs are for notifiers or configurations.
	178	* Notifiers are the external port and connection devices.
	179	*/
42d7d753	180	extern int extcon_dev_register(struct extcon_dev *edev);
de55d871	181	extern void extcon_dev_unregister(struct extcon_dev *edev);
1111244f SW	182	extern int devm_extcon_dev_register(struct device *dev,
	183	struct extcon_dev *edev);
	184	extern void devm_extcon_dev_unregister(struct device *dev,
	185	struct extcon_dev *edev);
74c5d09b	186	extern struct extcon_dev extcon_get_extcon_dev(const char extcon_name);
de55d871	187
a9af6522 CC	188	/*
	189	* Following APIs control the memory of extcon device.
	190	*/
2a9de9c0	191	extern struct extcon_dev extcon_dev_allocate(const enum extcon cable);
a9af6522	192	extern void extcon_dev_free(struct extcon_dev *edev);
739ba1bf	193	extern struct extcon_dev devm_extcon_dev_allocate(struct device dev,
2a9de9c0	194	const enum extcon *cable);
739ba1bf	195	extern void devm_extcon_dev_free(struct device dev, struct extcon_dev edev);
a9af6522	196
806d9dd7 MH	197	/*
	198	* get/set/update_state access the 32b encoded state value, which represents
	199	* states of all possible cables of the multistate port. For example, if one
	200	* calls extcon_set_state(edev, 0x7), it may mean that all the three cables
	201	* are attached to the port.
	202	*/
de55d871 MH	203	static inline u32 extcon_get_state(struct extcon_dev *edev)
	204	{
	205	return edev->state;
	206	}
	207
bde68e60 MH	208	extern int extcon_set_state(struct extcon_dev *edev, u32 state);
bde68e60 MH	209	extern int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state);
806d9dd7 MH	210
	211	/*
	212	* get/set_cable_state access each bit of the 32b encoded state value.
2a9de9c0	213	* They are used to access the status of each cable based on the cable_name.
806d9dd7	214	*/
2a9de9c0 CC	215	extern int extcon_get_cable_state_(struct extcon_dev *edev, enum extcon id);
2a9de9c0 CC	216	extern int extcon_set_cable_state_(struct extcon_dev *edev, enum extcon id,
806d9dd7 MH	217	bool cable_state);
	218
	219	extern int extcon_get_cable_state(struct extcon_dev *edev,
	220	const char *cable_name);
	221	extern int extcon_set_cable_state(struct extcon_dev *edev,
	222	const char *cable_name, bool cable_state);
	223
	224	/*
	225	* Following APIs are for notifiees (those who want to be notified)
	226	* to register a callback for events from a specific cable of the extcon.
	227	* Notifiees are the connected device drivers wanting to get notified by
	228	* a specific external port of a connection device.
	229	*/
	230	extern int extcon_register_interest(struct extcon_specific_cable_nb *obj,
	231	const char *extcon_name,
	232	const char *cable_name,
	233	struct notifier_block *nb);
	234	extern int extcon_unregister_interest(struct extcon_specific_cable_nb *nb);
74c5d09b DK	235
	236	/*
	237	* Following APIs are to monitor every action of a notifier.
c338bb03	238	* Registrar gets notified for every external port of a connection device.
806d9dd7	239	* Probably this could be used to debug an action of notifier; however,
c338bb03	240	* we do not recommend to use this for normal 'notifiee' device drivers who
806d9dd7	241	* want to be notified by a specific external port of the notifier.
74c5d09b DK	242	*/
	243	extern int extcon_register_notifier(struct extcon_dev *edev,
	244	struct notifier_block *nb);
	245	extern int extcon_unregister_notifier(struct extcon_dev *edev,
	246	struct notifier_block *nb);
1ad94ffe CC	247
	248	/*
	249	* Following API get the extcon device from devicetree.
	250	* This function use phandle of devicetree to get extcon device directly.
	251	*/
b9ec23c0 CC	252	extern struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
b9ec23c0 CC	253	int index);
707d7550 CC	254
	255	/* Following API to get information of extcon device */
	256	extern const char extcon_get_edev_name(struct extcon_dev edev);
	257
de55d871	258	#else /* CONFIG_EXTCON */
42d7d753	259	static inline int extcon_dev_register(struct extcon_dev *edev)
de55d871 MH	260	{
	261	return 0;
	262	}
	263
	264	static inline void extcon_dev_unregister(struct extcon_dev *edev) { }
	265
1111244f SW	266	static inline int devm_extcon_dev_register(struct device *dev,
	267	struct extcon_dev *edev)
	268	{
	269	return -EINVAL;
	270	}
	271
	272	static inline void devm_extcon_dev_unregister(struct device *dev,
	273	struct extcon_dev *edev) { }
	274
2a9de9c0	275	static inline struct extcon_dev extcon_dev_allocate(const enum extcon cable)
a9af6522 CC	276	{
	277	return ERR_PTR(-ENOSYS);
	278	}
	279
	280	static inline void extcon_dev_free(struct extcon_dev *edev) { }
	281
739ba1bf	282	static inline struct extcon_dev devm_extcon_dev_allocate(struct device dev,
2a9de9c0	283	const enum extcon *cable)
739ba1bf CC	284	{
	285	return ERR_PTR(-ENOSYS);
	286	}
	287
	288	static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }
	289
de55d871 MH	290	static inline u32 extcon_get_state(struct extcon_dev *edev)
	291	{
	292	return 0;
	293	}
	294
bde68e60 MH	295	static inline int extcon_set_state(struct extcon_dev *edev, u32 state)
	296	{
	297	return 0;
	298	}
806d9dd7	299
bde68e60	300	static inline int extcon_update_state(struct extcon_dev *edev, u32 mask,
806d9dd7	301	u32 state)
bde68e60 MH	302	{
	303	return 0;
	304	}
806d9dd7	305
806d9dd7	306	static inline int extcon_get_cable_state_(struct extcon_dev *edev,
2a9de9c0	307	enum extcon id)
806d9dd7 MH	308	{
	309	return 0;
	310	}
	311
	312	static inline int extcon_set_cable_state_(struct extcon_dev *edev,
2a9de9c0	313	enum extcon id, bool cable_state)
806d9dd7 MH	314	{
	315	return 0;
	316	}
	317
	318	static inline int extcon_get_cable_state(struct extcon_dev *edev,
	319	const char *cable_name)
	320	{
	321	return 0;
	322	}
	323
	324	static inline int extcon_set_cable_state(struct extcon_dev *edev,
	325	const char *cable_name, int state)
	326	{
	327	return 0;
	328	}
	329
74c5d09b DK	330	static inline struct extcon_dev extcon_get_extcon_dev(const char extcon_name)
	331	{
	332	return NULL;
	333	}
	334
	335	static inline int extcon_register_notifier(struct extcon_dev *edev,
	336	struct notifier_block *nb)
	337	{
	338	return 0;
	339	}
	340
	341	static inline int extcon_unregister_notifier(struct extcon_dev *edev,
	342	struct notifier_block *nb)
	343	{
	344	return 0;
	345	}
	346
806d9dd7 MH	347	static inline int extcon_register_interest(struct extcon_specific_cable_nb *obj,
	348	const char *extcon_name,
	349	const char *cable_name,
	350	struct notifier_block *nb)
	351	{
	352	return 0;
	353	}
	354
	355	static inline int extcon_unregister_interest(struct extcon_specific_cable_nb
	356	*obj)
	357	{
	358	return 0;
	359	}
1ad94ffe CC	360
	361	static inline struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
	362	int index)
	363	{
	364	return ERR_PTR(-ENODEV);
	365	}
de55d871 MH	366	#endif /* CONFIG_EXTCON */
de55d871 MH	367	#endif /* __LINUX_EXTCON_H__ */