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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
16#include <linux/device.h>
17#include <linux/workqueue.h>
18#include <linux/leds.h>
19
20/*
21 * All voltages, currents, charges, energies, time and temperatures in uV,
22 * µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise
23 * stated. It's driver's job to convert its raw values to units in which
24 * this class operates.
25 */
26
27/*
28 * For systems where the charger determines the maximum battery capacity
29 * the min and max fields should be used to present these values to user
30 * space. Unused/unknown fields will not appear in sysfs.
31 */
32
33enum {
34 POWER_SUPPLY_STATUS_UNKNOWN = 0,
35 POWER_SUPPLY_STATUS_CHARGING,
36 POWER_SUPPLY_STATUS_DISCHARGING,
37 POWER_SUPPLY_STATUS_NOT_CHARGING,
38 POWER_SUPPLY_STATUS_FULL,
39};
40
41enum {
42 POWER_SUPPLY_HEALTH_UNKNOWN = 0,
43 POWER_SUPPLY_HEALTH_GOOD,
44 POWER_SUPPLY_HEALTH_OVERHEAT,
45 POWER_SUPPLY_HEALTH_DEAD,
46 POWER_SUPPLY_HEALTH_OVERVOLTAGE,
47 POWER_SUPPLY_HEALTH_UNSPEC_FAILURE,
Mark Brown7e386e62008-11-30 22:43:21 +010048 POWER_SUPPLY_HEALTH_COLD,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040049};
50
51enum {
52 POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
53 POWER_SUPPLY_TECHNOLOGY_NiMH,
54 POWER_SUPPLY_TECHNOLOGY_LION,
55 POWER_SUPPLY_TECHNOLOGY_LIPO,
56 POWER_SUPPLY_TECHNOLOGY_LiFe,
57 POWER_SUPPLY_TECHNOLOGY_NiCd,
Dmitry Baryshkovc7cc9302008-01-07 04:12:41 +030058 POWER_SUPPLY_TECHNOLOGY_LiMn,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040059};
60
Anton Vorontsov4a11b592007-05-04 00:27:45 +040061enum power_supply_property {
62 /* Properties of type `int' */
63 POWER_SUPPLY_PROP_STATUS = 0,
64 POWER_SUPPLY_PROP_HEALTH,
65 POWER_SUPPLY_PROP_PRESENT,
66 POWER_SUPPLY_PROP_ONLINE,
67 POWER_SUPPLY_PROP_TECHNOLOGY,
Dmitry Baryshkovc7cc9302008-01-07 04:12:41 +030068 POWER_SUPPLY_PROP_VOLTAGE_MAX,
69 POWER_SUPPLY_PROP_VOLTAGE_MIN,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040070 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
71 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
72 POWER_SUPPLY_PROP_VOLTAGE_NOW,
73 POWER_SUPPLY_PROP_VOLTAGE_AVG,
74 POWER_SUPPLY_PROP_CURRENT_NOW,
75 POWER_SUPPLY_PROP_CURRENT_AVG,
76 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
77 POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
78 POWER_SUPPLY_PROP_CHARGE_FULL,
79 POWER_SUPPLY_PROP_CHARGE_EMPTY,
80 POWER_SUPPLY_PROP_CHARGE_NOW,
81 POWER_SUPPLY_PROP_CHARGE_AVG,
Andres Salomon8e552c32008-05-12 21:46:29 -040082 POWER_SUPPLY_PROP_CHARGE_COUNTER,
Anton Vorontsov4a11b592007-05-04 00:27:45 +040083 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
84 POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
85 POWER_SUPPLY_PROP_ENERGY_FULL,
86 POWER_SUPPLY_PROP_ENERGY_EMPTY,
87 POWER_SUPPLY_PROP_ENERGY_NOW,
88 POWER_SUPPLY_PROP_ENERGY_AVG,
89 POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
Anton Vorontsov4a11b592007-05-04 00:27:45 +040090 POWER_SUPPLY_PROP_TEMP,
91 POWER_SUPPLY_PROP_TEMP_AMBIENT,
92 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
93 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
94 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
95 POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
96 /* Properties of type `const char *' */
97 POWER_SUPPLY_PROP_MODEL_NAME,
98 POWER_SUPPLY_PROP_MANUFACTURER,
maximilian attems7c2670b2008-01-22 18:46:50 +010099 POWER_SUPPLY_PROP_SERIAL_NUMBER,
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400100};
101
102enum power_supply_type {
103 POWER_SUPPLY_TYPE_BATTERY = 0,
104 POWER_SUPPLY_TYPE_UPS,
105 POWER_SUPPLY_TYPE_MAINS,
106 POWER_SUPPLY_TYPE_USB,
107};
108
109union power_supply_propval {
110 int intval;
111 const char *strval;
112};
113
114struct power_supply {
115 const char *name;
116 enum power_supply_type type;
117 enum power_supply_property *properties;
118 size_t num_properties;
119
120 char **supplied_to;
121 size_t num_supplicants;
122
123 int (*get_property)(struct power_supply *psy,
124 enum power_supply_property psp,
125 union power_supply_propval *val);
126 void (*external_power_changed)(struct power_supply *psy);
127
128 /* For APM emulation, think legacy userspace. */
129 int use_for_apm;
130
131 /* private */
132 struct device *dev;
133 struct work_struct changed_work;
134
135#ifdef CONFIG_LEDS_TRIGGERS
136 struct led_trigger *charging_full_trig;
137 char *charging_full_trig_name;
138 struct led_trigger *charging_trig;
139 char *charging_trig_name;
140 struct led_trigger *full_trig;
141 char *full_trig_name;
142 struct led_trigger *online_trig;
143 char *online_trig_name;
144#endif
145};
146
147/*
148 * This is recommended structure to specify static power supply parameters.
149 * Generic one, parametrizable for different power supplies. Power supply
150 * class itself does not use it, but that's what implementing most platform
151 * drivers, should try reuse for consistency.
152 */
153
154struct power_supply_info {
155 const char *name;
156 int technology;
157 int voltage_max_design;
158 int voltage_min_design;
159 int charge_full_design;
160 int charge_empty_design;
161 int energy_full_design;
162 int energy_empty_design;
163 int use_for_apm;
164};
165
166extern void power_supply_changed(struct power_supply *psy);
167extern int power_supply_am_i_supplied(struct power_supply *psy);
168
Matthew Garrett942ed162008-08-26 21:09:59 +0100169#if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE)
170extern int power_supply_is_system_supplied(void);
171#else
172static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
173#endif
174
Anton Vorontsov4a11b592007-05-04 00:27:45 +0400175extern int power_supply_register(struct device *parent,
176 struct power_supply *psy);
177extern void power_supply_unregister(struct power_supply *psy);
178
179/* For APM emulation, think legacy userspace. */
180extern struct class *power_supply_class;
181
182#endif /* __LINUX_POWER_SUPPLY_H__ */