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Anton Vorontsov4a11b592007-05-04 00:27:45 +04001/*
2 * Universal power supply monitor class
3 *
4 * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
5 * Copyright © 2004 Szabolcs Gyurko
6 * Copyright © 2003 Ian Molton <spyro@f2s.com>
7 *
8 * Modified: 2004, Oct Szabolcs Gyurko
9 *
10 * You may use this code as per GPL version 2
11 */
12
13#ifndef __LINUX_POWER_SUPPLY_H__
14#define __LINUX_POWER_SUPPLY_H__
15
Anton Vorontsov4a11b592007-05-04 00:27:45 +040016#include <linux/workqueue.h>
17#include <linux/leds.h>
18
Paul Gortmaker313162d2012-01-30 11:46:54 -050019struct device;
20
Anton Vorontsov4a11b592007-05-04 00:27:45 +040021/*
22 * All voltages, currents, charges, energies, time and temperatures in uV,
23 * µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise
24 * stated. It's driver's job to convert its raw values to units in which
25 * this class operates.
26 */
27
28/*
29 * For systems where the charger determines the maximum battery capacity
30 * the min and max fields should be used to present these values to user
31 * space. Unused/unknown fields will not appear in sysfs.
32 */
33
34enum {
35 POWER_SUPPLY_STATUS_UNKNOWN = 0,
36 POWER_SUPPLY_STATUS_CHARGING,
37 POWER_SUPPLY_STATUS_DISCHARGING,
38 POWER_SUPPLY_STATUS_NOT_CHARGING,
39 POWER_SUPPLY_STATUS_FULL,
40};
41
42enum {
Andres Salomonee8076e2009-07-02 09:45:18 -040043 POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
44 POWER_SUPPLY_CHARGE_TYPE_NONE,
45 POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
46 POWER_SUPPLY_CHARGE_TYPE_FAST,
47};
48
49enum {
Anton Vorontsov4a11b592007-05-04 00:27:45 +040050 POWER_SUPPLY_HEALTH_UNKNOWN = 0,
51 POWER_SUPPLY_HEALTH_GOOD,
52 POWER_SUPPLY_HEALTH_OVERHEAT,
53 POWER_SUPPLY_HEALTH_DEAD,
54 POWER_SUPPLY_HEALTH_OVERVOLTAGE,
55 POWER_SUPPLY_HEALTH_UNSPEC_FAILURE,
Mark Brown7e386e62008-11-30 22:43:21 +010056 POWER_SUPPLY_HEALTH_COLD,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040057};
58
59enum {
60 POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
61 POWER_SUPPLY_TECHNOLOGY_NiMH,
62 POWER_SUPPLY_TECHNOLOGY_LION,
63 POWER_SUPPLY_TECHNOLOGY_LIPO,
64 POWER_SUPPLY_TECHNOLOGY_LiFe,
65 POWER_SUPPLY_TECHNOLOGY_NiCd,
Dmitry Baryshkovc7cc9302008-01-07 04:12:41 +030066 POWER_SUPPLY_TECHNOLOGY_LiMn,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040067};
68
Andres Salomonb294a292009-06-30 02:13:01 -040069enum {
70 POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
71 POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
72 POWER_SUPPLY_CAPACITY_LEVEL_LOW,
73 POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
74 POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
75 POWER_SUPPLY_CAPACITY_LEVEL_FULL,
76};
77
Jeremy Fitzhardinge25a0bc22011-12-07 11:24:20 -080078enum {
79 POWER_SUPPLY_SCOPE_UNKNOWN = 0,
80 POWER_SUPPLY_SCOPE_SYSTEM,
81 POWER_SUPPLY_SCOPE_DEVICE,
82};
83
Anton Vorontsov4a11b592007-05-04 00:27:45 +040084enum power_supply_property {
85 /* Properties of type `int' */
86 POWER_SUPPLY_PROP_STATUS = 0,
Andres Salomonee8076e2009-07-02 09:45:18 -040087 POWER_SUPPLY_PROP_CHARGE_TYPE,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040088 POWER_SUPPLY_PROP_HEALTH,
89 POWER_SUPPLY_PROP_PRESENT,
90 POWER_SUPPLY_PROP_ONLINE,
91 POWER_SUPPLY_PROP_TECHNOLOGY,
Alexey Starikovskiyc955fe82009-10-15 14:31:30 +040092 POWER_SUPPLY_PROP_CYCLE_COUNT,
Dmitry Baryshkovc7cc9302008-01-07 04:12:41 +030093 POWER_SUPPLY_PROP_VOLTAGE_MAX,
94 POWER_SUPPLY_PROP_VOLTAGE_MIN,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040095 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
96 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
97 POWER_SUPPLY_PROP_VOLTAGE_NOW,
98 POWER_SUPPLY_PROP_VOLTAGE_AVG,
Ramakrishna Pallalaa2ebfe22012-04-10 16:21:20 +053099 POWER_SUPPLY_PROP_VOLTAGE_OCV,
Heikki Krogerusfe3f6d02010-10-04 10:51:38 +0300100 POWER_SUPPLY_PROP_CURRENT_MAX,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400101 POWER_SUPPLY_PROP_CURRENT_NOW,
102 POWER_SUPPLY_PROP_CURRENT_AVG,
Alexey Starikovskiy7faa1442009-03-27 22:23:52 -0400103 POWER_SUPPLY_PROP_POWER_NOW,
104 POWER_SUPPLY_PROP_POWER_AVG,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400105 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
106 POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
107 POWER_SUPPLY_PROP_CHARGE_FULL,
108 POWER_SUPPLY_PROP_CHARGE_EMPTY,
109 POWER_SUPPLY_PROP_CHARGE_NOW,
110 POWER_SUPPLY_PROP_CHARGE_AVG,
Andres Salomon8e552c32008-05-12 21:46:29 -0400111 POWER_SUPPLY_PROP_CHARGE_COUNTER,
Ramakrishna Pallala3824c472012-05-06 18:16:44 +0530112 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
113 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400114 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
115 POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
116 POWER_SUPPLY_PROP_ENERGY_FULL,
117 POWER_SUPPLY_PROP_ENERGY_EMPTY,
118 POWER_SUPPLY_PROP_ENERGY_NOW,
119 POWER_SUPPLY_PROP_ENERGY_AVG,
120 POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
Ramakrishna Pallalae908c412012-07-05 16:59:12 +0530121 POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
122 POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
Andres Salomonb294a292009-06-30 02:13:01 -0400123 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400124 POWER_SUPPLY_PROP_TEMP,
Ramakrishna Pallalae908c412012-07-05 16:59:12 +0530125 POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
126 POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400127 POWER_SUPPLY_PROP_TEMP_AMBIENT,
Ramakrishna Pallalae908c412012-07-05 16:59:12 +0530128 POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN,
129 POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400130 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
131 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
132 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
133 POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
Anton Vorontsov5f487cd2010-05-18 21:49:51 +0200134 POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
Jeremy Fitzhardinge25a0bc22011-12-07 11:24:20 -0800135 POWER_SUPPLY_PROP_SCOPE,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400136 /* Properties of type `const char *' */
137 POWER_SUPPLY_PROP_MODEL_NAME,
138 POWER_SUPPLY_PROP_MANUFACTURER,
maximilian attems7c2670b2008-01-22 18:46:50 +0100139 POWER_SUPPLY_PROP_SERIAL_NUMBER,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400140};
141
142enum power_supply_type {
Kim, Milo9b887222011-11-30 23:08:33 -0800143 POWER_SUPPLY_TYPE_UNKNOWN = 0,
144 POWER_SUPPLY_TYPE_BATTERY,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400145 POWER_SUPPLY_TYPE_UPS,
146 POWER_SUPPLY_TYPE_MAINS,
Heikki Krogerus85efc8a2010-10-04 10:51:37 +0300147 POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */
148 POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port */
149 POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port */
150 POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters */
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400151};
152
153union power_supply_propval {
154 int intval;
155 const char *strval;
156};
157
158struct power_supply {
159 const char *name;
160 enum power_supply_type type;
161 enum power_supply_property *properties;
162 size_t num_properties;
163
164 char **supplied_to;
165 size_t num_supplicants;
166
167 int (*get_property)(struct power_supply *psy,
168 enum power_supply_property psp,
169 union power_supply_propval *val);
Daniel Mack0011d2d2010-05-18 21:49:52 +0200170 int (*set_property)(struct power_supply *psy,
171 enum power_supply_property psp,
172 const union power_supply_propval *val);
173 int (*property_is_writeable)(struct power_supply *psy,
174 enum power_supply_property psp);
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400175 void (*external_power_changed)(struct power_supply *psy);
Daniel Macke5f5ccb2009-07-23 20:35:53 +0200176 void (*set_charged)(struct power_supply *psy);
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400177
178 /* For APM emulation, think legacy userspace. */
179 int use_for_apm;
180
181 /* private */
182 struct device *dev;
183 struct work_struct changed_work;
Jenny TC3be330b2012-05-09 20:36:47 +0530184#ifdef CONFIG_THERMAL
185 struct thermal_zone_device *tzd;
186#endif
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400187
188#ifdef CONFIG_LEDS_TRIGGERS
189 struct led_trigger *charging_full_trig;
190 char *charging_full_trig_name;
191 struct led_trigger *charging_trig;
192 char *charging_trig_name;
193 struct led_trigger *full_trig;
194 char *full_trig_name;
195 struct led_trigger *online_trig;
196 char *online_trig_name;
Vasily Khoruzhick6501f722011-01-07 18:28:17 +0200197 struct led_trigger *charging_blink_full_solid_trig;
198 char *charging_blink_full_solid_trig_name;
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400199#endif
200};
201
202/*
203 * This is recommended structure to specify static power supply parameters.
204 * Generic one, parametrizable for different power supplies. Power supply
205 * class itself does not use it, but that's what implementing most platform
206 * drivers, should try reuse for consistency.
207 */
208
209struct power_supply_info {
210 const char *name;
211 int technology;
212 int voltage_max_design;
213 int voltage_min_design;
214 int charge_full_design;
215 int charge_empty_design;
216 int energy_full_design;
217 int energy_empty_design;
218 int use_for_apm;
219};
220
Daniel Macke5f5ccb2009-07-23 20:35:53 +0200221extern struct power_supply *power_supply_get_by_name(char *name);
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400222extern void power_supply_changed(struct power_supply *psy);
223extern int power_supply_am_i_supplied(struct power_supply *psy);
Daniel Macke5f5ccb2009-07-23 20:35:53 +0200224extern int power_supply_set_battery_charged(struct power_supply *psy);
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400225
Anton Vorontsov0d4ed4e2012-05-04 21:06:19 -0700226#ifdef CONFIG_POWER_SUPPLY
Matthew Garrett942ed162008-08-26 21:09:59 +0100227extern int power_supply_is_system_supplied(void);
228#else
229static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
230#endif
231
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400232extern int power_supply_register(struct device *parent,
233 struct power_supply *psy);
234extern void power_supply_unregister(struct power_supply *psy);
Jeremy Fitzhardinge83516652011-12-07 09:15:45 -0800235extern int power_supply_powers(struct power_supply *psy, struct device *dev);
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400236
237/* For APM emulation, think legacy userspace. */
238extern struct class *power_supply_class;
239
Rhyland Klein51d07562011-01-25 11:10:06 -0800240static inline bool power_supply_is_amp_property(enum power_supply_property psp)
241{
242 switch (psp) {
243 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
244 case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
245 case POWER_SUPPLY_PROP_CHARGE_FULL:
246 case POWER_SUPPLY_PROP_CHARGE_EMPTY:
247 case POWER_SUPPLY_PROP_CHARGE_NOW:
248 case POWER_SUPPLY_PROP_CHARGE_AVG:
249 case POWER_SUPPLY_PROP_CHARGE_COUNTER:
Ramakrishna Pallala3824c472012-05-06 18:16:44 +0530250 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
Rhyland Klein51d07562011-01-25 11:10:06 -0800251 case POWER_SUPPLY_PROP_CURRENT_MAX:
252 case POWER_SUPPLY_PROP_CURRENT_NOW:
253 case POWER_SUPPLY_PROP_CURRENT_AVG:
254 return 1;
255 default:
256 break;
257 }
258
259 return 0;
260}
261
262static inline bool power_supply_is_watt_property(enum power_supply_property psp)
263{
264 switch (psp) {
265 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
266 case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN:
267 case POWER_SUPPLY_PROP_ENERGY_FULL:
268 case POWER_SUPPLY_PROP_ENERGY_EMPTY:
269 case POWER_SUPPLY_PROP_ENERGY_NOW:
270 case POWER_SUPPLY_PROP_ENERGY_AVG:
271 case POWER_SUPPLY_PROP_VOLTAGE_MAX:
272 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
273 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
274 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
275 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
276 case POWER_SUPPLY_PROP_VOLTAGE_AVG:
Ramakrishna Pallalaa2ebfe22012-04-10 16:21:20 +0530277 case POWER_SUPPLY_PROP_VOLTAGE_OCV:
Ramakrishna Pallala3824c472012-05-06 18:16:44 +0530278 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
Rhyland Klein35c9d262011-02-28 16:55:31 -0800279 case POWER_SUPPLY_PROP_POWER_NOW:
Rhyland Klein51d07562011-01-25 11:10:06 -0800280 return 1;
281 default:
282 break;
283 }
284
285 return 0;
286}
287
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400288#endif /* __LINUX_POWER_SUPPLY_H__ */