2 * Universal power supply monitor class
4 * Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
5 * Copyright © 2004 Szabolcs Gyurko
6 * Copyright © 2003 Ian Molton <spyro@f2s.com>
8 * Modified: 2004, Oct Szabolcs Gyurko
10 * You may use this code as per GPL version 2
13 #ifndef __LINUX_POWER_SUPPLY_H__
14 #define __LINUX_POWER_SUPPLY_H__
16 #include <linux/device.h>
17 #include <linux/workqueue.h>
18 #include <linux/leds.h>
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.
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.
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
,
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
,
48 POWER_SUPPLY_HEALTH_COLD
,
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
,
58 POWER_SUPPLY_TECHNOLOGY_LiMn
,
61 enum 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
,
68 POWER_SUPPLY_PROP_VOLTAGE_MAX
,
69 POWER_SUPPLY_PROP_VOLTAGE_MIN
,
70 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
,
82 POWER_SUPPLY_PROP_CHARGE_COUNTER
,
83 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! */
90 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
,
99 POWER_SUPPLY_PROP_SERIAL_NUMBER
,
102 enum power_supply_type
{
103 POWER_SUPPLY_TYPE_BATTERY
= 0,
104 POWER_SUPPLY_TYPE_UPS
,
105 POWER_SUPPLY_TYPE_MAINS
,
106 POWER_SUPPLY_TYPE_USB
,
109 union power_supply_propval
{
114 struct power_supply
{
116 enum power_supply_type type
;
117 enum power_supply_property
*properties
;
118 size_t num_properties
;
121 size_t num_supplicants
;
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
);
128 /* For APM emulation, think legacy userspace. */
133 struct work_struct changed_work
;
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
;
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.
154 struct power_supply_info
{
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
;
166 extern void power_supply_changed(struct power_supply
*psy
);
167 extern int power_supply_am_i_supplied(struct power_supply
*psy
);
169 #if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE)
170 extern int power_supply_is_system_supplied(void);
172 static inline int power_supply_is_system_supplied(void) { return -ENOSYS
; }
175 extern int power_supply_register(struct device
*parent
,
176 struct power_supply
*psy
);
177 extern void power_supply_unregister(struct power_supply
*psy
);
179 /* For APM emulation, think legacy userspace. */
180 extern struct class *power_supply_class
;
182 #endif /* __LINUX_POWER_SUPPLY_H__ */