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

/*
 * External Connector (extcon) framework
 * - linux/include/linux/extcon.h for extcon consumer device 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 type of supported external connectors
 */
#define EXTCON_TYPE_USB		BIT(0)	/* USB connector */
#define EXTCON_TYPE_CHG		BIT(1)	/* Charger connector */
#define EXTCON_TYPE_JACK	BIT(2)	/* Jack connector */
#define EXTCON_TYPE_DISP	BIT(3)	/* Display connector */
#define EXTCON_TYPE_MISC	BIT(4)	/* Miscellaneous connector */

/*
 * 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
 *
 * When one SDP charger connector was reported, we should also report
 * the USB connector, which means EXTCON_CHG_USB_SDP should always
 * appear together with EXTCON_USB. The same as ACA charger connector,
 * EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST.
 *
 * The EXTCON_CHG_USB_SLOW connector can provide at least 500mA of
 * current at 5V. The EXTCON_CHG_USB_FAST connector can provide at
 * least 1A of current at 5V.
 */
#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
#define EXTCON_CHG_WPT		11	/* Wireless Power Transfer */
#define EXTCON_CHG_USB_PD	12	/* USB Power Delivery */

/* 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 */
#define EXTCON_DISP_DP		44	/* Display Port */
#define EXTCON_DISP_HMD		45	/* Head-Mounted Display */

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

#define EXTCON_NUM		63

/*
 * Define the properties of supported external connectors.
 *
 * When adding the new extcon property, they *must* have
 * the type/value/default information. Also, you *have to*
 * modify the EXTCON_PROP_[type]_START/END definitions
 * which mean the range of the supported properties
 * for each extcon type.
 *
 * The naming style of property
 * : EXTCON_PROP_[type]_[property name]
 *
 * EXTCON_PROP_USB_[property name]	: USB property
 * EXTCON_PROP_CHG_[property name]	: Charger property
 * EXTCON_PROP_JACK_[property name]	: Jack property
 * EXTCON_PROP_DISP_[property name]	: Display property
 */

/*
 * Properties of EXTCON_TYPE_USB.
 *
 * - EXTCON_PROP_USB_VBUS
 * @type:	integer (intval)
 * @value:	0 (low) or 1 (high)
 * @default:	0 (low)
 * - EXTCON_PROP_USB_TYPEC_POLARITY
 * @type:	integer (intval)
 * @value:	0 (normal) or 1 (flip)
 * @default:	0 (normal)
 * - EXTCON_PROP_USB_SS (SuperSpeed)
 * @type:       integer (intval)
 * @value:      0 (USB/USB2) or 1 (USB3)
 * @default:    0 (USB/USB2)
 *
 */
#define EXTCON_PROP_USB_VBUS		0
#define EXTCON_PROP_USB_TYPEC_POLARITY	1
#define EXTCON_PROP_USB_SS		2

#define EXTCON_PROP_USB_MIN		0
#define EXTCON_PROP_USB_MAX		2
#define EXTCON_PROP_USB_CNT	(EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1)

/* Properties of EXTCON_TYPE_CHG. */
#define EXTCON_PROP_CHG_MIN		50
#define EXTCON_PROP_CHG_MAX		50
#define EXTCON_PROP_CHG_CNT	(EXTCON_PROP_CHG_MAX - EXTCON_PROP_CHG_MIN + 1)

/* Properties of EXTCON_TYPE_JACK. */
#define EXTCON_PROP_JACK_MIN		100
#define EXTCON_PROP_JACK_MAX		100
#define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1)

/*
 * Properties of EXTCON_TYPE_DISP.
 *
 * - EXTCON_PROP_DISP_HPD (Hot Plug Detect)
 * @type:       integer (intval)
 * @value:      0 (no hpd) or 1 (hpd)
 * @default:    0 (no hpd)
 *
 */
#define EXTCON_PROP_DISP_HPD		150

/* Properties of EXTCON_TYPE_DISP. */
#define EXTCON_PROP_DISP_MIN		150
#define EXTCON_PROP_DISP_MAX		151
#define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1)

/*
 * Define the type of property's value.
 *
 * Define the property's value as union type. Because each property
 * would need the different data type to store it.
 */
union extcon_property_value {
	int intval;	/* type : integer (intval) */
};

struct extcon_dev;

#if IS_ENABLED(CONFIG_EXTCON)
/*
 * Following APIs get the connected state of each external connector.
 * The 'id' argument indicates the defined external connector.
 */
extern int extcon_get_state(struct extcon_dev *edev, unsigned int id);

/*
 * Following APIs get the property of each external connector.
 * The 'id' argument indicates the defined external connector
 * and the 'prop' indicates the extcon property.
 *
 * And extcon_get_property_capability() get the capability of the property
 * for each external connector. They are used to get the capability of the
 * property of each external connector based on the id and property.
 */
extern int extcon_get_property(struct extcon_dev *edev, unsigned int id,
				unsigned int prop,
				union extcon_property_value *prop_val);
extern int extcon_get_property_capability(struct extcon_dev *edev,
				unsigned int id, unsigned int prop);

/*
 * Following APIs register the notifier block in order to detect
 * the change of both state and property value for each external connector.
 *
 * extcon_register_notifier(*edev, id, *nb) : Register a notifier block
 *			for specific external connector of the extcon.
 * extcon_register_notifier_all(*edev, *nb) : Register a notifier block
 *			for all supported external connectors of the extcon.
 */
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);
extern int devm_extcon_register_notifier(struct device *dev,
				struct extcon_dev *edev, unsigned int id,
				struct notifier_block *nb);
extern void devm_extcon_unregister_notifier(struct device *dev,
				struct extcon_dev *edev, unsigned int id,
				struct notifier_block *nb);

extern int extcon_register_notifier_all(struct extcon_dev *edev,
				struct notifier_block *nb);
extern int extcon_unregister_notifier_all(struct extcon_dev *edev,
				struct notifier_block *nb);
extern int devm_extcon_register_notifier_all(struct device *dev,
				struct extcon_dev *edev,
				struct notifier_block *nb);
extern void devm_extcon_unregister_notifier_all(struct device *dev,
				struct extcon_dev *edev,
				struct notifier_block *nb);

/*
 * Following APIs get the extcon_dev from devicetree or by through extcon name.
 */
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
						     int index);

/* Following API get the name of extcon device. */
extern const char *extcon_get_edev_name(struct extcon_dev *edev);

#else /* CONFIG_EXTCON */
static inline int extcon_get_state(struct extcon_dev *edev, unsigned int id)
{
	return 0;
}

static inline int extcon_get_property(struct extcon_dev *edev, unsigned int id,
				unsigned int prop,
				union extcon_property_value *prop_val)
{
	return 0;
}

static inline int extcon_get_property_capability(struct extcon_dev *edev,
				unsigned int id, unsigned int prop)
{
	return 0;
}

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 devm_extcon_register_notifier(struct device *dev,
				struct extcon_dev *edev, unsigned int id,
				struct notifier_block *nb)
{
	return -ENOSYS;
}

static inline  void devm_extcon_unregister_notifier(struct device *dev,
				struct extcon_dev *edev, unsigned int id,
				struct notifier_block *nb) { }

static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name)
{
	return ERR_PTR(-ENODEV);
}

static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
				int index)
{
	return ERR_PTR(-ENODEV);
}
#endif /* CONFIG_EXTCON */

/*
 * Following structure and API are deprecated. EXTCON remains the function
 * definition to prevent the build break.
 */
struct extcon_specific_cable_nb {
       struct notifier_block *user_nb;
       int cable_index;
       struct extcon_dev *edev;
       unsigned long previous_value;
};

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 -EINVAL;
}

static inline int extcon_unregister_interest(struct extcon_specific_cable_nb *obj)
{
	return -EINVAL;
}
#endif /* __LINUX_EXTCON_H__ */
Commit	Line	Data
de55d871	1	/*
6ab6094f	2	* External Connector (extcon) framework
176aa360	3	* - linux/include/linux/extcon.h for extcon consumer device driver.
de55d871	4	*
2a9de9c0 CC	5	* Copyright (C) 2015 Samsung Electronics
	6	* Author: Chanwoo Choi <cw00.choi@samsung.com>
	7	*
de55d871 MH	8	* Copyright (C) 2012 Samsung Electronics
	9	* Author: Donggeun Kim <dg77.kim@samsung.com>
	10	* Author: MyungJoo Ham <myungjoo.ham@samsung.com>
	11	*
	12	* based on switch class driver
	13	* Copyright (C) 2008 Google, Inc.
	14	* Author: Mike Lockwood <lockwood@android.com>
	15	*
	16	* This software is licensed under the terms of the GNU General Public
	17	* License version 2, as published by the Free Software Foundation, and
	18	* may be copied, distributed, and modified under those terms.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
6ab6094f	24	*/
de55d871 MH	25
	26	#ifndef __LINUX_EXTCON_H__
	27	#define __LINUX_EXTCON_H__
	28
d851718f	29	#include <linux/device.h>
806d9dd7	30
55e4e2f1 CC	31	/*
	32	* Define the type of supported external connectors
	33	*/
	34	#define EXTCON_TYPE_USB BIT(0) /* USB connector */
	35	#define EXTCON_TYPE_CHG BIT(1) /* Charger connector */
	36	#define EXTCON_TYPE_JACK BIT(2) /* Jack connector */
	37	#define EXTCON_TYPE_DISP BIT(3) /* Display connector */
	38	#define EXTCON_TYPE_MISC BIT(4) /* Miscellaneous connector */
	39
73b6ecdb CC	40	/*
	41	* Define the unique id of supported external connectors
	42	*/
11eecf91	43	#define EXTCON_NONE 0
73b6ecdb	44
11eecf91 CC	45	/* USB external connector */
	46	#define EXTCON_USB 1
	47	#define EXTCON_USB_HOST 2
73b6ecdb	48
db622861 BW	49	/*
	50	* Charging external connector
	51	*
	52	* When one SDP charger connector was reported, we should also report
	53	* the USB connector, which means EXTCON_CHG_USB_SDP should always
	54	* appear together with EXTCON_USB. The same as ACA charger connector,
	55	* EXTCON_CHG_USB_ACA would normally appear with EXTCON_USB_HOST.
62a37443 BW	56	*
	57	* The EXTCON_CHG_USB_SLOW connector can provide at least 500mA of
	58	* current at 5V. The EXTCON_CHG_USB_FAST connector can provide at
	59	* least 1A of current at 5V.
db622861	60	*/
11eecf91 CC	61	#define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */
	62	#define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */
	63	#define EXTCON_CHG_USB_CDP 7 /* Charging Downstream Port */
	64	#define EXTCON_CHG_USB_ACA 8 /* Accessory Charger Adapter */
	65	#define EXTCON_CHG_USB_FAST 9
	66	#define EXTCON_CHG_USB_SLOW 10
7fe95fb8	67	#define EXTCON_CHG_WPT 11 /* Wireless Power Transfer */
3c5f0e07	68	#define EXTCON_CHG_USB_PD 12 /* USB Power Delivery */
73b6ecdb	69
11eecf91 CC	70	/* Jack external connector */
	71	#define EXTCON_JACK_MICROPHONE 20
	72	#define EXTCON_JACK_HEADPHONE 21
	73	#define EXTCON_JACK_LINE_IN 22
	74	#define EXTCON_JACK_LINE_OUT 23
	75	#define EXTCON_JACK_VIDEO_IN 24
	76	#define EXTCON_JACK_VIDEO_OUT 25
	77	#define EXTCON_JACK_SPDIF_IN 26 /* Sony Philips Digital InterFace */
	78	#define EXTCON_JACK_SPDIF_OUT 27
73b6ecdb	79
11eecf91 CC	80	/* Display external connector */
	81	#define EXTCON_DISP_HDMI 40 /* High-Definition Multimedia Interface */
	82	#define EXTCON_DISP_MHL 41 /* Mobile High-Definition Link */
	83	#define EXTCON_DISP_DVI 42 /* Digital Visual Interface */
	84	#define EXTCON_DISP_VGA 43 /* Video Graphics Array */
2164188d	85	#define EXTCON_DISP_DP 44 /* Display Port */
9c0595d6	86	#define EXTCON_DISP_HMD 45 /* Head-Mounted Display */
11eecf91 CC	87
	88	/* Miscellaneous external connector */
	89	#define EXTCON_DOCK 60
	90	#define EXTCON_JIG 61
	91	#define EXTCON_MECHANICAL 62
	92
	93	#define EXTCON_NUM 63
806d9dd7	94
792e7e9e	95	/*
6ab6094f	96	* Define the properties of supported external connectors.
792e7e9e CC	97	*
	98	* When adding the new extcon property, they must have
	99	* the type/value/default information. Also, you have to
	100	* modify the EXTCON_PROP_[type]_START/END definitions
	101	* which mean the range of the supported properties
	102	* for each extcon type.
	103	*
	104	* The naming style of property
	105	* : EXTCON_PROP_[type]_[property name]
	106	*
	107	* EXTCON_PROP_USB_[property name] : USB property
	108	* EXTCON_PROP_CHG_[property name] : Charger property
	109	* EXTCON_PROP_JACK_[property name] : Jack property
	110	* EXTCON_PROP_DISP_[property name] : Display property
	111	*/
	112
	113	/*
	114	* Properties of EXTCON_TYPE_USB.
	115	*
	116	* - EXTCON_PROP_USB_VBUS
	117	* @type: integer (intval)
	118	* @value: 0 (low) or 1 (high)
	119	* @default: 0 (low)
2164188d CZ	120	* - EXTCON_PROP_USB_TYPEC_POLARITY
	121	* @type: integer (intval)
	122	* @value: 0 (normal) or 1 (flip)
	123	* @default: 0 (normal)
8457a1b4 GR	124	* - EXTCON_PROP_USB_SS (SuperSpeed)
	125	* @type: integer (intval)
	126	* @value: 0 (USB/USB2) or 1 (USB3)
	127	* @default: 0 (USB/USB2)
	128	*
792e7e9e CC	129	*/
792e7e9e CC	130	#define EXTCON_PROP_USB_VBUS 0
2164188d	131	#define EXTCON_PROP_USB_TYPEC_POLARITY 1
8457a1b4	132	#define EXTCON_PROP_USB_SS 2
792e7e9e CC	133
792e7e9e CC	134	#define EXTCON_PROP_USB_MIN 0
8457a1b4	135	#define EXTCON_PROP_USB_MAX 2
792e7e9e CC	136	#define EXTCON_PROP_USB_CNT (EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1)
	137
	138	/* Properties of EXTCON_TYPE_CHG. */
	139	#define EXTCON_PROP_CHG_MIN 50
	140	#define EXTCON_PROP_CHG_MAX 50
	141	#define EXTCON_PROP_CHG_CNT (EXTCON_PROP_CHG_MAX - EXTCON_PROP_CHG_MIN + 1)
	142
	143	/* Properties of EXTCON_TYPE_JACK. */
	144	#define EXTCON_PROP_JACK_MIN 100
	145	#define EXTCON_PROP_JACK_MAX 100
	146	#define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1)
	147
c7914e8d CZ	148	/*
	149	* Properties of EXTCON_TYPE_DISP.
	150	*
	151	* - EXTCON_PROP_DISP_HPD (Hot Plug Detect)
	152	* @type: integer (intval)
	153	* @value: 0 (no hpd) or 1 (hpd)
	154	* @default: 0 (no hpd)
	155	*
	156	*/
	157	#define EXTCON_PROP_DISP_HPD 150
	158
792e7e9e CC	159	/* Properties of EXTCON_TYPE_DISP. */
792e7e9e CC	160	#define EXTCON_PROP_DISP_MIN 150
c7914e8d	161	#define EXTCON_PROP_DISP_MAX 151
792e7e9e CC	162	#define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1)
	163
	164	/*
	165	* Define the type of property's value.
	166	*
	167	* Define the property's value as union type. Because each property
	168	* would need the different data type to store it.
	169	*/
	170	union extcon_property_value {
	171	int intval; /* type : integer (intval) */
	172	};
	173
e6cf0465	174	struct extcon_dev;
806d9dd7	175
de55d871	176	#if IS_ENABLED(CONFIG_EXTCON)
806d9dd7	177	/*
176aa360	178	* Following APIs get the connected state of each external connector.
6ab6094f	179	* The 'id' argument indicates the defined external connector.
806d9dd7	180	*/
575c2b86	181	extern int extcon_get_state(struct extcon_dev *edev, unsigned int id);
806d9dd7	182
792e7e9e	183	/*
176aa360	184	* Following APIs get the property of each external connector.
6ab6094f CC	185	* The 'id' argument indicates the defined external connector
	186	* and the 'prop' indicates the extcon property.
	187	*
176aa360 CC	188	* And extcon_get_property_capability() get the capability of the property
176aa360 CC	189	* for each external connector. They are used to get the capability of the
6ab6094f	190	* property of each external connector based on the id and property.
792e7e9e CC	191	*/
	192	extern int extcon_get_property(struct extcon_dev *edev, unsigned int id,
	193	unsigned int prop,
	194	union extcon_property_value *prop_val);
7f2a0a16 CC	195	extern int extcon_get_property_capability(struct extcon_dev *edev,
7f2a0a16 CC	196	unsigned int id, unsigned int prop);
7f2a0a16	197
74c5d09b	198	/*
6ab6094f CC	199	* Following APIs register the notifier block in order to detect
	200	* the change of both state and property value for each external connector.
	201	*
815429b3 CC	202	* extcon_register_notifier(edev, id, nb) : Register a notifier block
	203	* for specific external connector of the extcon.
	204	* extcon_register_notifier_all(edev, nb) : Register a notifier block
	205	* for all supported external connectors of the extcon.
74c5d09b	206	*/
73b6ecdb	207	extern int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
ab8a8fbe	208	struct notifier_block *nb);
73b6ecdb	209	extern int extcon_unregister_notifier(struct extcon_dev *edev, unsigned int id,
ab8a8fbe	210	struct notifier_block *nb);
58f38656 CC	211	extern int devm_extcon_register_notifier(struct device *dev,
	212	struct extcon_dev *edev, unsigned int id,
	213	struct notifier_block *nb);
	214	extern void devm_extcon_unregister_notifier(struct device *dev,
	215	struct extcon_dev *edev, unsigned int id,
	216	struct notifier_block *nb);
1ad94ffe	217
815429b3 CC	218	extern int extcon_register_notifier_all(struct extcon_dev *edev,
	219	struct notifier_block *nb);
	220	extern int extcon_unregister_notifier_all(struct extcon_dev *edev,
	221	struct notifier_block *nb);
	222	extern int devm_extcon_register_notifier_all(struct device *dev,
	223	struct extcon_dev *edev,
	224	struct notifier_block *nb);
	225	extern void devm_extcon_unregister_notifier_all(struct device *dev,
	226	struct extcon_dev *edev,
	227	struct notifier_block *nb);
	228
1ad94ffe	229	/*
6ab6094f	230	* Following APIs get the extcon_dev from devicetree or by through extcon name.
1ad94ffe	231	*/
6ab6094f	232	extern struct extcon_dev extcon_get_extcon_dev(const char extcon_name);
b9ec23c0 CC	233	extern struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
b9ec23c0 CC	234	int index);
707d7550	235
6ab6094f	236	/* Following API get the name of extcon device. */
707d7550 CC	237	extern const char extcon_get_edev_name(struct extcon_dev edev);
707d7550 CC	238
de55d871	239	#else /* CONFIG_EXTCON */
575c2b86	240	static inline int extcon_get_state(struct extcon_dev *edev, unsigned int id)
806d9dd7 MH	241	{
	242	return 0;
	243	}
	244
cb9850d0	245	static inline int extcon_get_property(struct extcon_dev *edev, unsigned int id,
ab8a8fbe CC	246	unsigned int prop,
ab8a8fbe CC	247	union extcon_property_value *prop_val)
cb9850d0 KVA	248	{
	249	return 0;
	250	}
792e7e9e	251
7f2a0a16	252	static inline int extcon_get_property_capability(struct extcon_dev *edev,
ab8a8fbe	253	unsigned int id, unsigned int prop)
7f2a0a16 CC	254	{
	255	return 0;
	256	}
	257
74c5d09b	258	static inline int extcon_register_notifier(struct extcon_dev *edev,
ab8a8fbe	259	unsigned int id, struct notifier_block *nb)
74c5d09b DK	260	{
	261	return 0;
	262	}
	263
	264	static inline int extcon_unregister_notifier(struct extcon_dev *edev,
ab8a8fbe	265	unsigned int id, struct notifier_block *nb)
74c5d09b DK	266	{
	267	return 0;
	268	}
	269
58f38656 CC	270	static inline int devm_extcon_register_notifier(struct device *dev,
	271	struct extcon_dev *edev, unsigned int id,
	272	struct notifier_block *nb)
	273	{
	274	return -ENOSYS;
	275	}
	276
	277	static inline void devm_extcon_unregister_notifier(struct device *dev,
	278	struct extcon_dev *edev, unsigned int id,
	279	struct notifier_block *nb) { }
	280
6ab6094f CC	281	static inline struct extcon_dev extcon_get_extcon_dev(const char extcon_name)
6ab6094f CC	282	{
ab8a8fbe	283	return ERR_PTR(-ENODEV);
6ab6094f CC	284	}
6ab6094f CC	285
830ae442	286	static inline struct extcon_dev extcon_get_edev_by_phandle(struct device dev,
ab8a8fbe	287	int index)
806d9dd7	288	{
830ae442	289	return ERR_PTR(-ENODEV);
806d9dd7	290	}
830ae442	291	#endif /* CONFIG_EXTCON */
806d9dd7	292
830ae442 CC	293	/*
	294	* Following structure and API are deprecated. EXTCON remains the function
	295	* definition to prevent the build break.
	296	*/
	297	struct extcon_specific_cable_nb {
	298	struct notifier_block *user_nb;
	299	int cable_index;
	300	struct extcon_dev *edev;
	301	unsigned long previous_value;
	302	};
	303
	304	static inline int extcon_register_interest(struct extcon_specific_cable_nb *obj,
ab8a8fbe CC	305	const char extcon_name, const char cable_name,
ab8a8fbe CC	306	struct notifier_block *nb)
806d9dd7	307	{
830ae442	308	return -EINVAL;
806d9dd7	309	}
1ad94ffe	310
ab8a8fbe	311	static inline int extcon_unregister_interest(struct extcon_specific_cable_nb *obj)
1ad94ffe	312	{
830ae442	313	return -EINVAL;
1ad94ffe	314	}
de55d871	315	#endif /* __LINUX_EXTCON_H__ */