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Release 4.15 include/linux/extcon.h

Directory: include/linux
/*
 * 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; }

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi1157.89%250.00%
Kishon Vijay Abraham I526.32%125.00%
MyungJoo Ham315.79%125.00%
Total19100.00%4100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi28100.00%1100.00%
Total28100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Kishon Vijay Abraham I1773.91%266.67%
Chanwoo Choi626.09%133.33%
Total23100.00%3100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Donggeun Kim2083.33%133.33%
Chanwoo Choi416.67%266.67%
Total24100.00%3100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Donggeun Kim2083.33%133.33%
Chanwoo Choi416.67%266.67%
Total24100.00%3100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi30100.00%1100.00%
Total30100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi25100.00%1100.00%
Total25100.00%1100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi21100.00%2100.00%
Total21100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi24100.00%1100.00%
Total24100.00%1100.00%

#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; }

Contributors

PersonTokensPropCommitsCommitProp
MyungJoo Ham2993.55%150.00%
Chanwoo Choi26.45%150.00%
Total31100.00%2100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
MyungJoo Ham1275.00%133.33%
Chanwoo Choi425.00%266.67%
Total16100.00%3100.00%

#endif /* __LINUX_EXTCON_H__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Chanwoo Choi61976.23%2167.74%
MyungJoo Ham769.36%26.45%
Donggeun Kim728.87%13.23%
Kishon Vijay Abraham I222.71%26.45%
Chris Zhong151.85%26.45%
Guenter Roeck60.74%13.23%
Baolin Wang10.12%13.23%
Mark Brown10.12%13.23%
Total812100.00%31100.00%
Directory: include/linux
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