[deliverable/linux.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>

/*
 * Define the unique id of supported external connectors
 */
#define EXTCON_NONE		0

/* USB external connector */
#define EXTCON_USB		1
#define EXTCON_USB_HOST		2

/* Charging external connector */
#define EXTCON_CHG_USB_SDP	5	/* Standard Downstream Port */
#define EXTCON_CHG_USB_DCP	6	/* Dedicated Charging Port */
#define EXTCON_CHG_USB_CDP	7	/* Charging Downstream Port */
#define EXTCON_CHG_USB_ACA	8	/* Accessory Charger Adapter */
#define EXTCON_CHG_USB_FAST	9
#define EXTCON_CHG_USB_SLOW	10

/* Jack external connector */
#define EXTCON_JACK_MICROPHONE	20
#define EXTCON_JACK_HEADPHONE	21
#define EXTCON_JACK_LINE_IN	22
#define EXTCON_JACK_LINE_OUT	23
#define EXTCON_JACK_VIDEO_IN	24
#define EXTCON_JACK_VIDEO_OUT	25
#define EXTCON_JACK_SPDIF_IN	26	/* Sony Philips Digital InterFace */
#define EXTCON_JACK_SPDIF_OUT	27

/* Display external connector */
#define EXTCON_DISP_HDMI	40	/* High-Definition Multimedia Interface */
#define EXTCON_DISP_MHL		41	/* Mobile High-Definition Link */
#define EXTCON_DISP_DVI		42	/* Digital Visual Interface */
#define EXTCON_DISP_VGA		43	/* Video Graphics Array */

/* Miscellaneous external connector */
#define EXTCON_DOCK		60
#define EXTCON_JIG		61
#define EXTCON_MECHANICAL	62

#define EXTCON_NUM		63

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.
 * @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 unsigned int *supported_cable;
	const u32 *mutually_exclusive;

	/* 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().
 * @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 *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 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);

/*
 * 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, unsigned int id);
extern int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int 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, unsigned int id,
				    struct notifier_block *nb);
extern int extcon_unregister_notifier(struct extcon_dev *edev, unsigned int id,
				    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 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 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,
					  unsigned int id)
{
	return 0;
}

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

static inline int extcon_unregister_notifier(struct extcon_dev *edev,
					unsigned int id,
					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>
806d9dd7	30
73b6ecdb CC	31	/*
	32	* Define the unique id of supported external connectors
	33	*/
11eecf91	34	#define EXTCON_NONE 0
73b6ecdb	35
11eecf91 CC	36	/* USB external connector */
	37	#define EXTCON_USB 1
	38	#define EXTCON_USB_HOST 2
73b6ecdb	39
11eecf91 CC	40	/* Charging external connector */
	41	#define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */
	42	#define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */
	43	#define EXTCON_CHG_USB_CDP 7 /* Charging Downstream Port */
	44	#define EXTCON_CHG_USB_ACA 8 /* Accessory Charger Adapter */
	45	#define EXTCON_CHG_USB_FAST 9
	46	#define EXTCON_CHG_USB_SLOW 10
73b6ecdb	47
11eecf91 CC	48	/* Jack external connector */
	49	#define EXTCON_JACK_MICROPHONE 20
	50	#define EXTCON_JACK_HEADPHONE 21
	51	#define EXTCON_JACK_LINE_IN 22
	52	#define EXTCON_JACK_LINE_OUT 23
	53	#define EXTCON_JACK_VIDEO_IN 24
	54	#define EXTCON_JACK_VIDEO_OUT 25
	55	#define EXTCON_JACK_SPDIF_IN 26 /* Sony Philips Digital InterFace */
	56	#define EXTCON_JACK_SPDIF_OUT 27
73b6ecdb	57
11eecf91 CC	58	/* Display external connector */
	59	#define EXTCON_DISP_HDMI 40 /* High-Definition Multimedia Interface */
	60	#define EXTCON_DISP_MHL 41 /* Mobile High-Definition Link */
	61	#define EXTCON_DISP_DVI 42 /* Digital Visual Interface */
	62	#define EXTCON_DISP_VGA 43 /* Video Graphics Array */
	63
	64	/* Miscellaneous external connector */
	65	#define EXTCON_DOCK 60
	66	#define EXTCON_JIG 61
	67	#define EXTCON_MECHANICAL 62
	68
	69	#define EXTCON_NUM 63
806d9dd7 MH	70
	71	struct extcon_cable;
	72
de55d871 MH	73	/**
de55d871 MH	74	* struct extcon_dev - An extcon device represents one external connector.
a75e1c73 CC	75	* @name: The name of this extcon device. Parent device name is
a75e1c73 CC	76	* used if NULL.
2a9de9c0	77	* @supported_cable: Array of supported cable names ending with EXTCON_NONE.
806d9dd7 MH	78	* If supported_cable is NULL, cable name related APIs
806d9dd7 MH	79	* are disabled.
df072eb9	80	* @mutually_exclusive: Array of mutually exclusive set of cables that cannot
bde68e60 MH	81	* be attached simultaneously. The array should be
	82	* ending with NULL or be NULL (no mutually exclusive
	83	* cables). For example, if it is { 0x7, 0x30, 0}, then,
	84	* {0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot
	85	* be attached simulataneously. {0x7, 0} is equivalent to
	86	* {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there
	87	* can be no simultaneous connections.
dae61651	88	* @dev: Device of this extcon.
a75e1c73 CC	89	* @state: Attach/detach state of this extcon. Do not provide at
	90	* register-time.
	91	* @nh: Notifier for the state change events from this extcon
b9ec23c0 CC	92	* @entry: To support list of extcon devices so that users can
b9ec23c0 CC	93	* search for extcon devices based on the extcon name.
df072eb9 MH	94	* @lock:
	95	* @max_supported: Internal value to store the number of cables.
	96	* @extcon_dev_type: Device_type struct to provide attribute_groups
806d9dd7	97	* customized for each extcon device.
a75e1c73	98	* @cables: Sysfs subdirectories. Each represents one cable.
de55d871 MH	99	*
	100	* In most cases, users only need to provide "User initializing data" of
	101	* this struct when registering an extcon. In some exceptional cases,
	102	* optional callbacks may be needed. However, the values in "internal data"
	103	* are overwritten by register function.
	104	*/
	105	struct extcon_dev {
a75e1c73 CC	106	/* Optional user initializing data */
a75e1c73 CC	107	const char *name;
73b6ecdb	108	const unsigned int *supported_cable;
a75e1c73	109	const u32 *mutually_exclusive;
de55d871	110
a75e1c73	111	/* Internal data. Please do not set. */
dae61651	112	struct device dev;
046050f6	113	struct raw_notifier_head *nh;
74c5d09b	114	struct list_head entry;
806d9dd7	115	int max_supported;
a75e1c73 CC	116	spinlock_t lock; /* could be called by irq handler */
a75e1c73 CC	117	u32 state;
806d9dd7 MH	118
	119	/* /sys/class/extcon/.../cable.n/... */
	120	struct device_type extcon_dev_type;
	121	struct extcon_cable *cables;
a75e1c73	122
bde68e60 MH	123	/* /sys/class/extcon/.../mutually_exclusive/... */
	124	struct attribute_group attr_g_muex;
	125	struct attribute **attrs_muex;
	126	struct device_attribute *d_attrs_muex;
806d9dd7 MH	127	};
	128
	129	/**
a75e1c73 CC	130	* struct extcon_cable - An internal data for each cable of extcon device.
a75e1c73 CC	131	* @edev: The extcon device
df072eb9	132	* @cable_index: Index of this cable in the edev
a75e1c73 CC	133	* @attr_g: Attribute group for the cable
	134	* @attr_name: "name" sysfs entry
	135	* @attr_state: "state" sysfs entry
	136	* @attrs: Array pointing to attr_name and attr_state for attr_g
806d9dd7 MH	137	*/
	138	struct extcon_cable {
	139	struct extcon_dev *edev;
	140	int cable_index;
	141
	142	struct attribute_group attr_g;
	143	struct device_attribute attr_name;
	144	struct device_attribute attr_state;
	145
	146	struct attribute attrs[3]; / to be fed to attr_g.attrs */
	147	};
	148
	149	/**
	150	* struct extcon_specific_cable_nb - An internal data for
a75e1c73	151	* extcon_register_interest().
a75e1c73 CC	152	* @user_nb: user provided notifier block for events from
a75e1c73 CC	153	* a specific cable.
df072eb9	154	* @cable_index: the target cable.
a75e1c73	155	* @edev: the target extcon device.
df072eb9	156	* @previous_value: the saved previous event value.
806d9dd7 MH	157	*/
806d9dd7 MH	158	struct extcon_specific_cable_nb {
806d9dd7 MH	159	struct notifier_block *user_nb;
	160	int cable_index;
	161	struct extcon_dev *edev;
	162	unsigned long previous_value;
de55d871 MH	163	};
	164
	165	#if IS_ENABLED(CONFIG_EXTCON)
74c5d09b DK	166
	167	/*
	168	* Following APIs are for notifiers or configurations.
	169	* Notifiers are the external port and connection devices.
	170	*/
42d7d753	171	extern int extcon_dev_register(struct extcon_dev *edev);
de55d871	172	extern void extcon_dev_unregister(struct extcon_dev *edev);
1111244f SW	173	extern int devm_extcon_dev_register(struct device *dev,
	174	struct extcon_dev *edev);
	175	extern void devm_extcon_dev_unregister(struct device *dev,
	176	struct extcon_dev *edev);
74c5d09b	177	extern struct extcon_dev extcon_get_extcon_dev(const char extcon_name);
de55d871	178
a9af6522 CC	179	/*
	180	* Following APIs control the memory of extcon device.
	181	*/
73b6ecdb	182	extern struct extcon_dev extcon_dev_allocate(const unsigned int cable);
a9af6522	183	extern void extcon_dev_free(struct extcon_dev *edev);
739ba1bf	184	extern struct extcon_dev devm_extcon_dev_allocate(struct device dev,
73b6ecdb	185	const unsigned int *cable);
739ba1bf	186	extern void devm_extcon_dev_free(struct device dev, struct extcon_dev edev);
a9af6522	187
806d9dd7 MH	188	/*
	189	* get/set/update_state access the 32b encoded state value, which represents
	190	* states of all possible cables of the multistate port. For example, if one
	191	* calls extcon_set_state(edev, 0x7), it may mean that all the three cables
	192	* are attached to the port.
	193	*/
de55d871 MH	194	static inline u32 extcon_get_state(struct extcon_dev *edev)
	195	{
	196	return edev->state;
	197	}
	198
bde68e60 MH	199	extern int extcon_set_state(struct extcon_dev *edev, u32 state);
bde68e60 MH	200	extern int extcon_update_state(struct extcon_dev *edev, u32 mask, u32 state);
806d9dd7 MH	201
	202	/*
	203	* get/set_cable_state access each bit of the 32b encoded state value.
2a9de9c0	204	* They are used to access the status of each cable based on the cable_name.
806d9dd7	205	*/
73b6ecdb CC	206	extern int extcon_get_cable_state_(struct extcon_dev *edev, unsigned int id);
73b6ecdb CC	207	extern int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id,
806d9dd7 MH	208	bool cable_state);
	209
	210	extern int extcon_get_cable_state(struct extcon_dev *edev,
	211	const char *cable_name);
	212	extern int extcon_set_cable_state(struct extcon_dev *edev,
	213	const char *cable_name, bool cable_state);
	214
	215	/*
	216	* Following APIs are for notifiees (those who want to be notified)
	217	* to register a callback for events from a specific cable of the extcon.
	218	* Notifiees are the connected device drivers wanting to get notified by
	219	* a specific external port of a connection device.
	220	*/
	221	extern int extcon_register_interest(struct extcon_specific_cable_nb *obj,
	222	const char *extcon_name,
	223	const char *cable_name,
	224	struct notifier_block *nb);
	225	extern int extcon_unregister_interest(struct extcon_specific_cable_nb *nb);
74c5d09b DK	226
	227	/*
	228	* Following APIs are to monitor every action of a notifier.
c338bb03	229	* Registrar gets notified for every external port of a connection device.
806d9dd7	230	* Probably this could be used to debug an action of notifier; however,
c338bb03	231	* we do not recommend to use this for normal 'notifiee' device drivers who
806d9dd7	232	* want to be notified by a specific external port of the notifier.
74c5d09b	233	*/
73b6ecdb	234	extern int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
046050f6	235	struct notifier_block *nb);
73b6ecdb	236	extern int extcon_unregister_notifier(struct extcon_dev *edev, unsigned int id,
74c5d09b	237	struct notifier_block *nb);
1ad94ffe CC	238
	239	/*
	240	* Following API get the extcon device from devicetree.
	241	* This function use phandle of devicetree to get extcon device directly.
	242	*/
b9ec23c0 CC	243	extern struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
b9ec23c0 CC	244	int index);
707d7550 CC	245
	246	/* Following API to get information of extcon device */
	247	extern const char extcon_get_edev_name(struct extcon_dev edev);
	248
de55d871	249	#else /* CONFIG_EXTCON */
42d7d753	250	static inline int extcon_dev_register(struct extcon_dev *edev)
de55d871 MH	251	{
	252	return 0;
	253	}
	254
	255	static inline void extcon_dev_unregister(struct extcon_dev *edev) { }
	256
1111244f SW	257	static inline int devm_extcon_dev_register(struct device *dev,
	258	struct extcon_dev *edev)
	259	{
	260	return -EINVAL;
	261	}
	262
	263	static inline void devm_extcon_dev_unregister(struct device *dev,
	264	struct extcon_dev *edev) { }
	265
73b6ecdb	266	static inline struct extcon_dev extcon_dev_allocate(const unsigned int cable)
a9af6522 CC	267	{
	268	return ERR_PTR(-ENOSYS);
	269	}
	270
	271	static inline void extcon_dev_free(struct extcon_dev *edev) { }
	272
739ba1bf	273	static inline struct extcon_dev devm_extcon_dev_allocate(struct device dev,
73b6ecdb	274	const unsigned int *cable)
739ba1bf CC	275	{
	276	return ERR_PTR(-ENOSYS);
	277	}
	278
	279	static inline void devm_extcon_dev_free(struct extcon_dev *edev) { }
	280
de55d871 MH	281	static inline u32 extcon_get_state(struct extcon_dev *edev)
	282	{
	283	return 0;
	284	}
	285
bde68e60 MH	286	static inline int extcon_set_state(struct extcon_dev *edev, u32 state)
	287	{
	288	return 0;
	289	}
806d9dd7	290
bde68e60	291	static inline int extcon_update_state(struct extcon_dev *edev, u32 mask,
806d9dd7	292	u32 state)
bde68e60 MH	293	{
	294	return 0;
	295	}
806d9dd7	296
806d9dd7	297	static inline int extcon_get_cable_state_(struct extcon_dev *edev,
73b6ecdb	298	unsigned int id)
806d9dd7 MH	299	{
	300	return 0;
	301	}
	302
	303	static inline int extcon_set_cable_state_(struct extcon_dev *edev,
73b6ecdb	304	unsigned int id, bool cable_state)
806d9dd7 MH	305	{
	306	return 0;
	307	}
	308
	309	static inline int extcon_get_cable_state(struct extcon_dev *edev,
	310	const char *cable_name)
	311	{
	312	return 0;
	313	}
	314
	315	static inline int extcon_set_cable_state(struct extcon_dev *edev,
	316	const char *cable_name, int state)
	317	{
	318	return 0;
	319	}
	320
74c5d09b DK	321	static inline struct extcon_dev extcon_get_extcon_dev(const char extcon_name)
	322	{
	323	return NULL;
	324	}
	325
	326	static inline int extcon_register_notifier(struct extcon_dev *edev,
73b6ecdb	327	unsigned int id,
046050f6	328	struct notifier_block *nb)
74c5d09b DK	329	{
	330	return 0;
	331	}
	332
	333	static inline int extcon_unregister_notifier(struct extcon_dev *edev,
73b6ecdb	334	unsigned int id,
046050f6	335	struct notifier_block *nb)
74c5d09b DK	336	{
	337	return 0;
	338	}
	339
806d9dd7 MH	340	static inline int extcon_register_interest(struct extcon_specific_cable_nb *obj,
	341	const char *extcon_name,
	342	const char *cable_name,
	343	struct notifier_block *nb)
	344	{
	345	return 0;
	346	}
	347
	348	static inline int extcon_unregister_interest(struct extcon_specific_cable_nb
	349	*obj)
	350	{
	351	return 0;
	352	}
1ad94ffe CC	353
	354	static inline struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
	355	int index)
	356	{
	357	return ERR_PTR(-ENODEV);
	358	}
de55d871 MH	359	#endif /* CONFIG_EXTCON */
de55d871 MH	360	#endif /* __LINUX_EXTCON_H__ */