MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 1 | /* |
| 2 | * External connector (extcon) class driver |
| 3 | * |
Chanwoo Choi | 2a9de9c | 2015-04-24 19:16:05 +0900 | [diff] [blame] | 4 | * Copyright (C) 2015 Samsung Electronics |
| 5 | * Author: Chanwoo Choi <cw00.choi@samsung.com> |
| 6 | * |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 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 | |
Chanwoo Choi | d851718 | 2012-11-08 18:39:41 +0900 | [diff] [blame] | 29 | #include <linux/device.h> |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 30 | |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 31 | /* |
Chanwoo Choi | 55e4e2f | 2016-07-11 16:34:52 +0900 | [diff] [blame] | 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 | |
| 40 | /* |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 41 | * Define the unique id of supported external connectors |
| 42 | */ |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 43 | #define EXTCON_NONE 0 |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 44 | |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 45 | /* USB external connector */ |
| 46 | #define EXTCON_USB 1 |
| 47 | #define EXTCON_USB_HOST 2 |
Chanwoo Choi | 2a9de9c | 2015-04-24 19:16:05 +0900 | [diff] [blame] | 48 | |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 49 | /* Charging external connector */ |
| 50 | #define EXTCON_CHG_USB_SDP 5 /* Standard Downstream Port */ |
| 51 | #define EXTCON_CHG_USB_DCP 6 /* Dedicated Charging Port */ |
| 52 | #define EXTCON_CHG_USB_CDP 7 /* Charging Downstream Port */ |
| 53 | #define EXTCON_CHG_USB_ACA 8 /* Accessory Charger Adapter */ |
| 54 | #define EXTCON_CHG_USB_FAST 9 |
| 55 | #define EXTCON_CHG_USB_SLOW 10 |
Chanwoo Choi | 2a9de9c | 2015-04-24 19:16:05 +0900 | [diff] [blame] | 56 | |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 57 | /* Jack external connector */ |
| 58 | #define EXTCON_JACK_MICROPHONE 20 |
| 59 | #define EXTCON_JACK_HEADPHONE 21 |
| 60 | #define EXTCON_JACK_LINE_IN 22 |
| 61 | #define EXTCON_JACK_LINE_OUT 23 |
| 62 | #define EXTCON_JACK_VIDEO_IN 24 |
| 63 | #define EXTCON_JACK_VIDEO_OUT 25 |
| 64 | #define EXTCON_JACK_SPDIF_IN 26 /* Sony Philips Digital InterFace */ |
| 65 | #define EXTCON_JACK_SPDIF_OUT 27 |
Chanwoo Choi | 2a9de9c | 2015-04-24 19:16:05 +0900 | [diff] [blame] | 66 | |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 67 | /* Display external connector */ |
| 68 | #define EXTCON_DISP_HDMI 40 /* High-Definition Multimedia Interface */ |
| 69 | #define EXTCON_DISP_MHL 41 /* Mobile High-Definition Link */ |
| 70 | #define EXTCON_DISP_DVI 42 /* Digital Visual Interface */ |
| 71 | #define EXTCON_DISP_VGA 43 /* Video Graphics Array */ |
Chris Zhong | 2164188 | 2016-07-22 01:13:02 +0900 | [diff] [blame^] | 72 | #define EXTCON_DISP_DP 44 /* Display Port */ |
Chanwoo Choi | 11eecf9 | 2015-10-03 14:15:13 +0900 | [diff] [blame] | 73 | |
| 74 | /* Miscellaneous external connector */ |
| 75 | #define EXTCON_DOCK 60 |
| 76 | #define EXTCON_JIG 61 |
| 77 | #define EXTCON_MECHANICAL 62 |
| 78 | |
| 79 | #define EXTCON_NUM 63 |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 80 | |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 81 | /* |
| 82 | * Define the property of supported external connectors. |
| 83 | * |
| 84 | * When adding the new extcon property, they *must* have |
| 85 | * the type/value/default information. Also, you *have to* |
| 86 | * modify the EXTCON_PROP_[type]_START/END definitions |
| 87 | * which mean the range of the supported properties |
| 88 | * for each extcon type. |
| 89 | * |
| 90 | * The naming style of property |
| 91 | * : EXTCON_PROP_[type]_[property name] |
| 92 | * |
| 93 | * EXTCON_PROP_USB_[property name] : USB property |
| 94 | * EXTCON_PROP_CHG_[property name] : Charger property |
| 95 | * EXTCON_PROP_JACK_[property name] : Jack property |
| 96 | * EXTCON_PROP_DISP_[property name] : Display property |
| 97 | */ |
| 98 | |
| 99 | /* |
| 100 | * Properties of EXTCON_TYPE_USB. |
| 101 | * |
| 102 | * - EXTCON_PROP_USB_VBUS |
| 103 | * @type: integer (intval) |
| 104 | * @value: 0 (low) or 1 (high) |
| 105 | * @default: 0 (low) |
Chris Zhong | 2164188 | 2016-07-22 01:13:02 +0900 | [diff] [blame^] | 106 | * - EXTCON_PROP_USB_TYPEC_POLARITY |
| 107 | * @type: integer (intval) |
| 108 | * @value: 0 (normal) or 1 (flip) |
| 109 | * @default: 0 (normal) |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 110 | */ |
| 111 | #define EXTCON_PROP_USB_VBUS 0 |
Chris Zhong | 2164188 | 2016-07-22 01:13:02 +0900 | [diff] [blame^] | 112 | #define EXTCON_PROP_USB_TYPEC_POLARITY 1 |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 113 | |
| 114 | #define EXTCON_PROP_USB_MIN 0 |
Chris Zhong | 2164188 | 2016-07-22 01:13:02 +0900 | [diff] [blame^] | 115 | #define EXTCON_PROP_USB_MAX 1 |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 116 | #define EXTCON_PROP_USB_CNT (EXTCON_PROP_USB_MAX - EXTCON_PROP_USB_MIN + 1) |
| 117 | |
| 118 | /* Properties of EXTCON_TYPE_CHG. */ |
| 119 | #define EXTCON_PROP_CHG_MIN 50 |
| 120 | #define EXTCON_PROP_CHG_MAX 50 |
| 121 | #define EXTCON_PROP_CHG_CNT (EXTCON_PROP_CHG_MAX - EXTCON_PROP_CHG_MIN + 1) |
| 122 | |
| 123 | /* Properties of EXTCON_TYPE_JACK. */ |
| 124 | #define EXTCON_PROP_JACK_MIN 100 |
| 125 | #define EXTCON_PROP_JACK_MAX 100 |
| 126 | #define EXTCON_PROP_JACK_CNT (EXTCON_PROP_JACK_MAX - EXTCON_PROP_JACK_MIN + 1) |
| 127 | |
| 128 | /* Properties of EXTCON_TYPE_DISP. */ |
| 129 | #define EXTCON_PROP_DISP_MIN 150 |
| 130 | #define EXTCON_PROP_DISP_MAX 150 |
| 131 | #define EXTCON_PROP_DISP_CNT (EXTCON_PROP_DISP_MAX - EXTCON_PROP_DISP_MIN + 1) |
| 132 | |
| 133 | /* |
| 134 | * Define the type of property's value. |
| 135 | * |
| 136 | * Define the property's value as union type. Because each property |
| 137 | * would need the different data type to store it. |
| 138 | */ |
| 139 | union extcon_property_value { |
| 140 | int intval; /* type : integer (intval) */ |
| 141 | }; |
| 142 | |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 143 | struct extcon_cable; |
| 144 | |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 145 | /** |
| 146 | * struct extcon_dev - An extcon device represents one external connector. |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 147 | * @name: The name of this extcon device. Parent device name is |
| 148 | * used if NULL. |
Chanwoo Choi | 2a9de9c | 2015-04-24 19:16:05 +0900 | [diff] [blame] | 149 | * @supported_cable: Array of supported cable names ending with EXTCON_NONE. |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 150 | * If supported_cable is NULL, cable name related APIs |
| 151 | * are disabled. |
MyungJoo Ham | df072eb | 2012-11-20 19:22:33 +0900 | [diff] [blame] | 152 | * @mutually_exclusive: Array of mutually exclusive set of cables that cannot |
MyungJoo Ham | bde68e6 | 2012-04-20 14:16:26 +0900 | [diff] [blame] | 153 | * be attached simultaneously. The array should be |
| 154 | * ending with NULL or be NULL (no mutually exclusive |
| 155 | * cables). For example, if it is { 0x7, 0x30, 0}, then, |
| 156 | * {0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot |
| 157 | * be attached simulataneously. {0x7, 0} is equivalent to |
| 158 | * {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there |
| 159 | * can be no simultaneous connections. |
Chanwoo Choi | dae6165 | 2013-09-27 09:19:40 +0900 | [diff] [blame] | 160 | * @dev: Device of this extcon. |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 161 | * @state: Attach/detach state of this extcon. Do not provide at |
| 162 | * register-time. |
| 163 | * @nh: Notifier for the state change events from this extcon |
Chanwoo Choi | b9ec23c | 2015-04-24 14:48:52 +0900 | [diff] [blame] | 164 | * @entry: To support list of extcon devices so that users can |
| 165 | * search for extcon devices based on the extcon name. |
MyungJoo Ham | df072eb | 2012-11-20 19:22:33 +0900 | [diff] [blame] | 166 | * @lock: |
| 167 | * @max_supported: Internal value to store the number of cables. |
| 168 | * @extcon_dev_type: Device_type struct to provide attribute_groups |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 169 | * customized for each extcon device. |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 170 | * @cables: Sysfs subdirectories. Each represents one cable. |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 171 | * |
| 172 | * In most cases, users only need to provide "User initializing data" of |
| 173 | * this struct when registering an extcon. In some exceptional cases, |
| 174 | * optional callbacks may be needed. However, the values in "internal data" |
| 175 | * are overwritten by register function. |
| 176 | */ |
| 177 | struct extcon_dev { |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 178 | /* Optional user initializing data */ |
| 179 | const char *name; |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 180 | const unsigned int *supported_cable; |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 181 | const u32 *mutually_exclusive; |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 182 | |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 183 | /* Internal data. Please do not set. */ |
Chanwoo Choi | dae6165 | 2013-09-27 09:19:40 +0900 | [diff] [blame] | 184 | struct device dev; |
Chanwoo Choi | 046050f | 2015-05-19 20:01:12 +0900 | [diff] [blame] | 185 | struct raw_notifier_head *nh; |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 186 | struct list_head entry; |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 187 | int max_supported; |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 188 | spinlock_t lock; /* could be called by irq handler */ |
| 189 | u32 state; |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 190 | |
| 191 | /* /sys/class/extcon/.../cable.n/... */ |
| 192 | struct device_type extcon_dev_type; |
| 193 | struct extcon_cable *cables; |
Chanwoo Choi | a75e1c7 | 2013-08-31 13:16:49 +0900 | [diff] [blame] | 194 | |
MyungJoo Ham | bde68e6 | 2012-04-20 14:16:26 +0900 | [diff] [blame] | 195 | /* /sys/class/extcon/.../mutually_exclusive/... */ |
| 196 | struct attribute_group attr_g_muex; |
| 197 | struct attribute **attrs_muex; |
| 198 | struct device_attribute *d_attrs_muex; |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 199 | }; |
| 200 | |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 201 | #if IS_ENABLED(CONFIG_EXTCON) |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 202 | |
| 203 | /* |
| 204 | * Following APIs are for notifiers or configurations. |
| 205 | * Notifiers are the external port and connection devices. |
| 206 | */ |
Chanwoo Choi | 42d7d75 | 2013-09-27 09:20:26 +0900 | [diff] [blame] | 207 | extern int extcon_dev_register(struct extcon_dev *edev); |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 208 | extern void extcon_dev_unregister(struct extcon_dev *edev); |
Sangjung Woo | 1111244 | 2014-04-21 19:10:08 +0900 | [diff] [blame] | 209 | extern int devm_extcon_dev_register(struct device *dev, |
| 210 | struct extcon_dev *edev); |
| 211 | extern void devm_extcon_dev_unregister(struct device *dev, |
| 212 | struct extcon_dev *edev); |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 213 | extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name); |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 214 | |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 215 | /* |
Chanwoo Choi | a9af652 | 2014-04-24 19:46:49 +0900 | [diff] [blame] | 216 | * Following APIs control the memory of extcon device. |
| 217 | */ |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 218 | extern struct extcon_dev *extcon_dev_allocate(const unsigned int *cable); |
Chanwoo Choi | a9af652 | 2014-04-24 19:46:49 +0900 | [diff] [blame] | 219 | extern void extcon_dev_free(struct extcon_dev *edev); |
Chanwoo Choi | 739ba1b | 2014-04-24 20:12:15 +0900 | [diff] [blame] | 220 | extern struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 221 | const unsigned int *cable); |
Chanwoo Choi | 739ba1b | 2014-04-24 20:12:15 +0900 | [diff] [blame] | 222 | extern void devm_extcon_dev_free(struct device *dev, struct extcon_dev *edev); |
Chanwoo Choi | a9af652 | 2014-04-24 19:46:49 +0900 | [diff] [blame] | 223 | |
| 224 | /* |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 225 | * get/set_state access each bit of the 32b encoded state value. |
Chanwoo Choi | bc92126 | 2016-06-27 21:09:04 +0900 | [diff] [blame] | 226 | * They are used to access the status of each cable based on the cable id. |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 227 | */ |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 228 | extern int extcon_get_state(struct extcon_dev *edev, unsigned int id); |
| 229 | extern int extcon_set_state(struct extcon_dev *edev, unsigned int id, |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 230 | bool cable_state); |
Chanwoo Choi | ab11af04 | 2016-07-22 13:16:34 +0900 | [diff] [blame] | 231 | extern int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, |
| 232 | bool cable_state); |
| 233 | |
| 234 | /* |
| 235 | * Synchronize the state and property data for a specific external connector. |
| 236 | */ |
| 237 | extern int extcon_sync(struct extcon_dev *edev, unsigned int id); |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 238 | |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 239 | /* |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 240 | * get/set_property access the property value of each external connector. |
| 241 | * They are used to access the property of each cable based on the property id. |
| 242 | */ |
| 243 | extern int extcon_get_property(struct extcon_dev *edev, unsigned int id, |
| 244 | unsigned int prop, |
| 245 | union extcon_property_value *prop_val); |
| 246 | extern int extcon_set_property(struct extcon_dev *edev, unsigned int id, |
| 247 | unsigned int prop, |
| 248 | union extcon_property_value prop_val); |
Chanwoo Choi | ab11af04 | 2016-07-22 13:16:34 +0900 | [diff] [blame] | 249 | extern int extcon_set_property_sync(struct extcon_dev *edev, unsigned int id, |
| 250 | unsigned int prop, |
| 251 | union extcon_property_value prop_val); |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 252 | |
| 253 | /* |
Chanwoo Choi | 7f2a0a1 | 2016-07-25 21:15:19 +0900 | [diff] [blame] | 254 | * get/set_property_capability set the capability of the property for each |
| 255 | * external connector. They are used to set the capability of the property |
| 256 | * of each external connector based on the id and property. |
| 257 | */ |
| 258 | extern int extcon_get_property_capability(struct extcon_dev *edev, |
| 259 | unsigned int id, unsigned int prop); |
| 260 | extern int extcon_set_property_capability(struct extcon_dev *edev, |
| 261 | unsigned int id, unsigned int prop); |
| 262 | |
| 263 | /* |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 264 | * Following APIs are to monitor every action of a notifier. |
Peter Meerwald | c338bb0 | 2012-08-23 09:11:54 +0900 | [diff] [blame] | 265 | * Registrar gets notified for every external port of a connection device. |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 266 | * Probably this could be used to debug an action of notifier; however, |
Peter Meerwald | c338bb0 | 2012-08-23 09:11:54 +0900 | [diff] [blame] | 267 | * we do not recommend to use this for normal 'notifiee' device drivers who |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 268 | * want to be notified by a specific external port of the notifier. |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 269 | */ |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 270 | extern int extcon_register_notifier(struct extcon_dev *edev, unsigned int id, |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 271 | struct notifier_block *nb); |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 272 | extern int extcon_unregister_notifier(struct extcon_dev *edev, unsigned int id, |
Chanwoo Choi | 046050f | 2015-05-19 20:01:12 +0900 | [diff] [blame] | 273 | struct notifier_block *nb); |
Chanwoo Choi | 58f3865 | 2016-06-27 20:03:39 +0900 | [diff] [blame] | 274 | extern int devm_extcon_register_notifier(struct device *dev, |
| 275 | struct extcon_dev *edev, unsigned int id, |
| 276 | struct notifier_block *nb); |
| 277 | extern void devm_extcon_unregister_notifier(struct device *dev, |
| 278 | struct extcon_dev *edev, unsigned int id, |
| 279 | struct notifier_block *nb); |
Chanwoo Choi | 1ad94ff | 2014-03-18 19:55:46 +0900 | [diff] [blame] | 280 | |
| 281 | /* |
| 282 | * Following API get the extcon device from devicetree. |
| 283 | * This function use phandle of devicetree to get extcon device directly. |
| 284 | */ |
Chanwoo Choi | b9ec23c | 2015-04-24 14:48:52 +0900 | [diff] [blame] | 285 | extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, |
| 286 | int index); |
Chanwoo Choi | 707d755 | 2015-04-15 13:57:51 +0900 | [diff] [blame] | 287 | |
| 288 | /* Following API to get information of extcon device */ |
| 289 | extern const char *extcon_get_edev_name(struct extcon_dev *edev); |
| 290 | |
Chanwoo Choi | 830ae44 | 2016-05-31 17:32:30 +0900 | [diff] [blame] | 291 | |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 292 | #else /* CONFIG_EXTCON */ |
Chanwoo Choi | 42d7d75 | 2013-09-27 09:20:26 +0900 | [diff] [blame] | 293 | static inline int extcon_dev_register(struct extcon_dev *edev) |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 294 | { |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | static inline void extcon_dev_unregister(struct extcon_dev *edev) { } |
| 299 | |
Sangjung Woo | 1111244 | 2014-04-21 19:10:08 +0900 | [diff] [blame] | 300 | static inline int devm_extcon_dev_register(struct device *dev, |
| 301 | struct extcon_dev *edev) |
| 302 | { |
| 303 | return -EINVAL; |
| 304 | } |
| 305 | |
| 306 | static inline void devm_extcon_dev_unregister(struct device *dev, |
| 307 | struct extcon_dev *edev) { } |
| 308 | |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 309 | static inline struct extcon_dev *extcon_dev_allocate(const unsigned int *cable) |
Chanwoo Choi | a9af652 | 2014-04-24 19:46:49 +0900 | [diff] [blame] | 310 | { |
| 311 | return ERR_PTR(-ENOSYS); |
| 312 | } |
| 313 | |
| 314 | static inline void extcon_dev_free(struct extcon_dev *edev) { } |
| 315 | |
Chanwoo Choi | 739ba1b | 2014-04-24 20:12:15 +0900 | [diff] [blame] | 316 | static inline struct extcon_dev *devm_extcon_dev_allocate(struct device *dev, |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 317 | const unsigned int *cable) |
Chanwoo Choi | 739ba1b | 2014-04-24 20:12:15 +0900 | [diff] [blame] | 318 | { |
| 319 | return ERR_PTR(-ENOSYS); |
| 320 | } |
| 321 | |
| 322 | static inline void devm_extcon_dev_free(struct extcon_dev *edev) { } |
| 323 | |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 324 | |
| 325 | static inline int extcon_get_state(struct extcon_dev *edev, unsigned int id) |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 326 | { |
| 327 | return 0; |
| 328 | } |
| 329 | |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 330 | static inline int extcon_set_state(struct extcon_dev *edev, unsigned int id, |
| 331 | bool cable_state) |
MyungJoo Ham | 806d9dd | 2012-04-20 14:16:25 +0900 | [diff] [blame] | 332 | { |
| 333 | return 0; |
| 334 | } |
| 335 | |
Chanwoo Choi | ab11af04 | 2016-07-22 13:16:34 +0900 | [diff] [blame] | 336 | static inline int extcon_set_state_sync(struct extcon_dev *edev, unsigned int id, |
| 337 | bool cable_state) |
| 338 | { |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static inline int extcon_sync(struct extcon_dev *edev, unsigned int id) |
| 343 | { |
| 344 | return 0; |
| 345 | } |
| 346 | |
Chanwoo Choi | 792e7e9e | 2016-07-11 19:30:43 +0900 | [diff] [blame] | 347 | static inline int extcon_get_property(struct extcon_dev *edev, unsigned int id, |
| 348 | unsigned int prop, |
| 349 | union extcon_property_value *prop_val) |
| 350 | { |
| 351 | return 0; |
| 352 | } |
| 353 | static inline int extcon_set_property(struct extcon_dev *edev, unsigned int id, |
| 354 | unsigned int prop, |
| 355 | union extcon_property_value prop_val) |
| 356 | { |
| 357 | return 0; |
| 358 | } |
| 359 | |
Chanwoo Choi | ab11af04 | 2016-07-22 13:16:34 +0900 | [diff] [blame] | 360 | static inline int extcon_set_property_sync(struct extcon_dev *edev, |
| 361 | unsigned int id, unsigned int prop, |
| 362 | union extcon_property_value prop_val) |
| 363 | { |
| 364 | return 0; |
| 365 | } |
| 366 | |
Chanwoo Choi | 7f2a0a1 | 2016-07-25 21:15:19 +0900 | [diff] [blame] | 367 | static inline int extcon_get_property_capability(struct extcon_dev *edev, |
| 368 | unsigned int id, unsigned int prop) |
| 369 | { |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | static inline int extcon_set_property_capability(struct extcon_dev *edev, |
| 374 | unsigned int id, unsigned int prop) |
| 375 | { |
| 376 | return 0; |
| 377 | } |
| 378 | |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 379 | static inline struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name) |
| 380 | { |
| 381 | return NULL; |
| 382 | } |
| 383 | |
| 384 | static inline int extcon_register_notifier(struct extcon_dev *edev, |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 385 | unsigned int id, |
Chanwoo Choi | 046050f | 2015-05-19 20:01:12 +0900 | [diff] [blame] | 386 | struct notifier_block *nb) |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 387 | { |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | static inline int extcon_unregister_notifier(struct extcon_dev *edev, |
Chanwoo Choi | 73b6ecd | 2015-06-12 11:10:06 +0900 | [diff] [blame] | 392 | unsigned int id, |
Chanwoo Choi | 046050f | 2015-05-19 20:01:12 +0900 | [diff] [blame] | 393 | struct notifier_block *nb) |
Donggeun Kim | 74c5d09 | 2012-04-20 14:16:24 +0900 | [diff] [blame] | 394 | { |
| 395 | return 0; |
| 396 | } |
| 397 | |
Chanwoo Choi | 58f3865 | 2016-06-27 20:03:39 +0900 | [diff] [blame] | 398 | static inline int devm_extcon_register_notifier(struct device *dev, |
| 399 | struct extcon_dev *edev, unsigned int id, |
| 400 | struct notifier_block *nb) |
| 401 | { |
| 402 | return -ENOSYS; |
| 403 | } |
| 404 | |
| 405 | static inline void devm_extcon_unregister_notifier(struct device *dev, |
| 406 | struct extcon_dev *edev, unsigned int id, |
| 407 | struct notifier_block *nb) { } |
| 408 | |
Chanwoo Choi | 1ad94ff | 2014-03-18 19:55:46 +0900 | [diff] [blame] | 409 | static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, |
| 410 | int index) |
| 411 | { |
| 412 | return ERR_PTR(-ENODEV); |
| 413 | } |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 414 | #endif /* CONFIG_EXTCON */ |
Chanwoo Choi | 830ae44 | 2016-05-31 17:32:30 +0900 | [diff] [blame] | 415 | |
| 416 | /* |
| 417 | * Following structure and API are deprecated. EXTCON remains the function |
| 418 | * definition to prevent the build break. |
| 419 | */ |
| 420 | struct extcon_specific_cable_nb { |
| 421 | struct notifier_block *user_nb; |
| 422 | int cable_index; |
| 423 | struct extcon_dev *edev; |
| 424 | unsigned long previous_value; |
| 425 | }; |
| 426 | |
| 427 | static inline int extcon_register_interest(struct extcon_specific_cable_nb *obj, |
| 428 | const char *extcon_name, const char *cable_name, |
| 429 | struct notifier_block *nb) |
| 430 | { |
| 431 | return -EINVAL; |
| 432 | } |
| 433 | |
| 434 | static inline int extcon_unregister_interest(struct extcon_specific_cable_nb |
| 435 | *obj) |
| 436 | { |
| 437 | return -EINVAL; |
| 438 | } |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 439 | |
| 440 | static inline int extcon_get_cable_state_(struct extcon_dev *edev, unsigned int id) |
| 441 | { |
| 442 | return extcon_get_state(edev, id); |
| 443 | } |
| 444 | |
| 445 | static inline int extcon_set_cable_state_(struct extcon_dev *edev, unsigned int id, |
| 446 | bool cable_state) |
| 447 | { |
Chanwoo Choi | ab11af04 | 2016-07-22 13:16:34 +0900 | [diff] [blame] | 448 | return extcon_set_state_sync(edev, id, cable_state); |
Chanwoo Choi | 575c2b86 | 2016-07-22 13:03:17 +0900 | [diff] [blame] | 449 | } |
MyungJoo Ham | de55d87 | 2012-04-20 14:16:22 +0900 | [diff] [blame] | 450 | #endif /* __LINUX_EXTCON_H__ */ |