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/workqueue.h>
17 #include <linux/leds.h>
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.
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.
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,
43 POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
44 POWER_SUPPLY_CHARGE_TYPE_NONE,
45 POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
46 POWER_SUPPLY_CHARGE_TYPE_FAST,
50 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,
56 POWER_SUPPLY_HEALTH_COLD,
57 POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE,
58 POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE,
62 POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
63 POWER_SUPPLY_TECHNOLOGY_NiMH,
64 POWER_SUPPLY_TECHNOLOGY_LION,
65 POWER_SUPPLY_TECHNOLOGY_LIPO,
66 POWER_SUPPLY_TECHNOLOGY_LiFe,
67 POWER_SUPPLY_TECHNOLOGY_NiCd,
68 POWER_SUPPLY_TECHNOLOGY_LiMn,
72 POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
73 POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
74 POWER_SUPPLY_CAPACITY_LEVEL_LOW,
75 POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
76 POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
77 POWER_SUPPLY_CAPACITY_LEVEL_FULL,
81 POWER_SUPPLY_SCOPE_UNKNOWN = 0,
82 POWER_SUPPLY_SCOPE_SYSTEM,
83 POWER_SUPPLY_SCOPE_DEVICE,
86 enum power_supply_property {
87 /* Properties of type `int' */
88 POWER_SUPPLY_PROP_STATUS = 0,
89 POWER_SUPPLY_PROP_CHARGE_TYPE,
90 POWER_SUPPLY_PROP_HEALTH,
91 POWER_SUPPLY_PROP_PRESENT,
92 POWER_SUPPLY_PROP_ONLINE,
93 POWER_SUPPLY_PROP_AUTHENTIC,
94 POWER_SUPPLY_PROP_TECHNOLOGY,
95 POWER_SUPPLY_PROP_CYCLE_COUNT,
96 POWER_SUPPLY_PROP_VOLTAGE_MAX,
97 POWER_SUPPLY_PROP_VOLTAGE_MIN,
98 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
99 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
100 POWER_SUPPLY_PROP_VOLTAGE_NOW,
101 POWER_SUPPLY_PROP_VOLTAGE_AVG,
102 POWER_SUPPLY_PROP_VOLTAGE_OCV,
103 POWER_SUPPLY_PROP_CURRENT_MAX,
104 POWER_SUPPLY_PROP_CURRENT_NOW,
105 POWER_SUPPLY_PROP_CURRENT_AVG,
106 POWER_SUPPLY_PROP_POWER_NOW,
107 POWER_SUPPLY_PROP_POWER_AVG,
108 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
109 POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
110 POWER_SUPPLY_PROP_CHARGE_FULL,
111 POWER_SUPPLY_PROP_CHARGE_EMPTY,
112 POWER_SUPPLY_PROP_CHARGE_NOW,
113 POWER_SUPPLY_PROP_CHARGE_AVG,
114 POWER_SUPPLY_PROP_CHARGE_COUNTER,
115 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
116 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
117 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
118 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
119 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
120 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
121 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
122 POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
123 POWER_SUPPLY_PROP_ENERGY_FULL,
124 POWER_SUPPLY_PROP_ENERGY_EMPTY,
125 POWER_SUPPLY_PROP_ENERGY_NOW,
126 POWER_SUPPLY_PROP_ENERGY_AVG,
127 POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
128 POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
129 POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
130 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
131 POWER_SUPPLY_PROP_TEMP,
132 POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
133 POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
134 POWER_SUPPLY_PROP_TEMP_AMBIENT,
135 POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN,
136 POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX,
137 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
138 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
139 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
140 POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
141 POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
142 POWER_SUPPLY_PROP_SCOPE,
143 /* Properties of type `const char *' */
144 POWER_SUPPLY_PROP_MODEL_NAME,
145 POWER_SUPPLY_PROP_MANUFACTURER,
146 POWER_SUPPLY_PROP_SERIAL_NUMBER,
149 enum power_supply_type {
150 POWER_SUPPLY_TYPE_UNKNOWN = 0,
151 POWER_SUPPLY_TYPE_BATTERY,
152 POWER_SUPPLY_TYPE_UPS,
153 POWER_SUPPLY_TYPE_MAINS,
154 POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */
155 POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port */
156 POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port */
157 POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters */
160 union power_supply_propval {
165 struct power_supply {
167 enum power_supply_type type;
168 enum power_supply_property *properties;
169 size_t num_properties;
172 size_t num_supplicants;
174 int (*get_property)(struct power_supply *psy,
175 enum power_supply_property psp,
176 union power_supply_propval *val);
177 int (*set_property)(struct power_supply *psy,
178 enum power_supply_property psp,
179 const union power_supply_propval *val);
180 int (*property_is_writeable)(struct power_supply *psy,
181 enum power_supply_property psp);
182 void (*external_power_changed)(struct power_supply *psy);
183 void (*set_charged)(struct power_supply *psy);
185 /* For APM emulation, think legacy userspace. */
190 struct work_struct changed_work;
191 #ifdef CONFIG_THERMAL
192 struct thermal_zone_device *tzd;
193 struct thermal_cooling_device *tcd;
196 #ifdef CONFIG_LEDS_TRIGGERS
197 struct led_trigger *charging_full_trig;
198 char *charging_full_trig_name;
199 struct led_trigger *charging_trig;
200 char *charging_trig_name;
201 struct led_trigger *full_trig;
202 char *full_trig_name;
203 struct led_trigger *online_trig;
204 char *online_trig_name;
205 struct led_trigger *charging_blink_full_solid_trig;
206 char *charging_blink_full_solid_trig_name;
211 * This is recommended structure to specify static power supply parameters.
212 * Generic one, parametrizable for different power supplies. Power supply
213 * class itself does not use it, but that's what implementing most platform
214 * drivers, should try reuse for consistency.
217 struct power_supply_info {
220 int voltage_max_design;
221 int voltage_min_design;
222 int charge_full_design;
223 int charge_empty_design;
224 int energy_full_design;
225 int energy_empty_design;
229 extern struct power_supply *power_supply_get_by_name(char *name);
230 extern void power_supply_changed(struct power_supply *psy);
231 extern int power_supply_am_i_supplied(struct power_supply *psy);
232 extern int power_supply_set_battery_charged(struct power_supply *psy);
234 #ifdef CONFIG_POWER_SUPPLY
235 extern int power_supply_is_system_supplied(void);
237 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
240 extern int power_supply_register(struct device *parent,
241 struct power_supply *psy);
242 extern void power_supply_unregister(struct power_supply *psy);
243 extern int power_supply_powers(struct power_supply *psy, struct device *dev);
245 /* For APM emulation, think legacy userspace. */
246 extern struct class *power_supply_class;
248 static inline bool power_supply_is_amp_property(enum power_supply_property psp)
251 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
252 case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
253 case POWER_SUPPLY_PROP_CHARGE_FULL:
254 case POWER_SUPPLY_PROP_CHARGE_EMPTY:
255 case POWER_SUPPLY_PROP_CHARGE_NOW:
256 case POWER_SUPPLY_PROP_CHARGE_AVG:
257 case POWER_SUPPLY_PROP_CHARGE_COUNTER:
258 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
259 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
260 case POWER_SUPPLY_PROP_CURRENT_MAX:
261 case POWER_SUPPLY_PROP_CURRENT_NOW:
262 case POWER_SUPPLY_PROP_CURRENT_AVG:
271 static inline bool power_supply_is_watt_property(enum power_supply_property psp)
274 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
275 case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN:
276 case POWER_SUPPLY_PROP_ENERGY_FULL:
277 case POWER_SUPPLY_PROP_ENERGY_EMPTY:
278 case POWER_SUPPLY_PROP_ENERGY_NOW:
279 case POWER_SUPPLY_PROP_ENERGY_AVG:
280 case POWER_SUPPLY_PROP_VOLTAGE_MAX:
281 case POWER_SUPPLY_PROP_VOLTAGE_MIN:
282 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
283 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
284 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
285 case POWER_SUPPLY_PROP_VOLTAGE_AVG:
286 case POWER_SUPPLY_PROP_VOLTAGE_OCV:
287 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
288 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
289 case POWER_SUPPLY_PROP_POWER_NOW:
298 #endif /* __LINUX_POWER_SUPPLY_H__ */