1/* 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 * ��A, ��Ah, ��Wh, 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_CHARGE_TYPE_UNKNOWN = 0, 43 POWER_SUPPLY_CHARGE_TYPE_NONE, 44 POWER_SUPPLY_CHARGE_TYPE_TRICKLE, 45 POWER_SUPPLY_CHARGE_TYPE_FAST, 46}; 47 48enum { 49 POWER_SUPPLY_HEALTH_UNKNOWN = 0, 50 POWER_SUPPLY_HEALTH_GOOD, 51 POWER_SUPPLY_HEALTH_OVERHEAT, 52 POWER_SUPPLY_HEALTH_DEAD, 53 POWER_SUPPLY_HEALTH_OVERVOLTAGE, 54 POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, 55 POWER_SUPPLY_HEALTH_COLD, 56}; 57 58enum { 59 POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0, 60 POWER_SUPPLY_TECHNOLOGY_NiMH, 61 POWER_SUPPLY_TECHNOLOGY_LION, 62 POWER_SUPPLY_TECHNOLOGY_LIPO, 63 POWER_SUPPLY_TECHNOLOGY_LiFe, 64 POWER_SUPPLY_TECHNOLOGY_NiCd, 65 POWER_SUPPLY_TECHNOLOGY_LiMn, 66}; 67 68enum { 69 POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0, 70 POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL, 71 POWER_SUPPLY_CAPACITY_LEVEL_LOW, 72 POWER_SUPPLY_CAPACITY_LEVEL_NORMAL, 73 POWER_SUPPLY_CAPACITY_LEVEL_HIGH, 74 POWER_SUPPLY_CAPACITY_LEVEL_FULL, 75}; 76 77enum power_supply_property { 78 /* Properties of type `int' */ 79 POWER_SUPPLY_PROP_STATUS = 0, 80 POWER_SUPPLY_PROP_CHARGE_TYPE, 81 POWER_SUPPLY_PROP_HEALTH, 82 POWER_SUPPLY_PROP_PRESENT, 83 POWER_SUPPLY_PROP_ONLINE, 84 POWER_SUPPLY_PROP_TECHNOLOGY, 85 POWER_SUPPLY_PROP_CYCLE_COUNT, 86 POWER_SUPPLY_PROP_VOLTAGE_MAX, 87 POWER_SUPPLY_PROP_VOLTAGE_MIN, 88 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 89 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, 90 POWER_SUPPLY_PROP_VOLTAGE_NOW, 91 POWER_SUPPLY_PROP_VOLTAGE_AVG, 92 POWER_SUPPLY_PROP_CURRENT_NOW, 93 POWER_SUPPLY_PROP_CURRENT_AVG, 94 POWER_SUPPLY_PROP_POWER_NOW, 95 POWER_SUPPLY_PROP_POWER_AVG, 96 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 97 POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN, 98 POWER_SUPPLY_PROP_CHARGE_FULL, 99 POWER_SUPPLY_PROP_CHARGE_EMPTY, 100 POWER_SUPPLY_PROP_CHARGE_NOW, 101 POWER_SUPPLY_PROP_CHARGE_AVG, 102 POWER_SUPPLY_PROP_CHARGE_COUNTER, 103 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 104 POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, 105 POWER_SUPPLY_PROP_ENERGY_FULL, 106 POWER_SUPPLY_PROP_ENERGY_EMPTY, 107 POWER_SUPPLY_PROP_ENERGY_NOW, 108 POWER_SUPPLY_PROP_ENERGY_AVG, 109 POWER_SUPPLY_PROP_CAPACITY, /* in percents! */ 110 POWER_SUPPLY_PROP_CAPACITY_LEVEL, 111 POWER_SUPPLY_PROP_TEMP, 112 POWER_SUPPLY_PROP_TEMP_AMBIENT, 113 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 114 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 115 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, 116 POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 117 POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */ 118 /* Properties of type `const char *' */ 119 POWER_SUPPLY_PROP_MODEL_NAME, 120 POWER_SUPPLY_PROP_MANUFACTURER, 121 POWER_SUPPLY_PROP_SERIAL_NUMBER, 122}; 123 124enum power_supply_type { 125 POWER_SUPPLY_TYPE_BATTERY = 0, 126 POWER_SUPPLY_TYPE_UPS, 127 POWER_SUPPLY_TYPE_MAINS, 128 POWER_SUPPLY_TYPE_USB, 129}; 130 131union power_supply_propval { 132 int intval; 133 const char *strval; 134}; 135 136struct power_supply { 137 const char *name; 138 enum power_supply_type type; 139 enum power_supply_property *properties; 140 size_t num_properties; 141 142 char **supplied_to; 143 size_t num_supplicants; 144 145 int (*get_property)(struct power_supply *psy, 146 enum power_supply_property psp, 147 union power_supply_propval *val); 148 int (*set_property)(struct power_supply *psy, 149 enum power_supply_property psp, 150 const union power_supply_propval *val); 151 int (*property_is_writeable)(struct power_supply *psy, 152 enum power_supply_property psp); 153 void (*external_power_changed)(struct power_supply *psy); 154 void (*set_charged)(struct power_supply *psy); 155 156 /* For APM emulation, think legacy userspace. */ 157 int use_for_apm; 158 159 /* private */ 160 struct device *dev; 161 struct work_struct changed_work; 162 163#ifdef CONFIG_LEDS_TRIGGERS 164 struct led_trigger *charging_full_trig; 165 char *charging_full_trig_name; 166 struct led_trigger *charging_trig; 167 char *charging_trig_name; 168 struct led_trigger *full_trig; 169 char *full_trig_name; 170 struct led_trigger *online_trig; 171 char *online_trig_name; 172#endif 173}; 174 175/* 176 * This is recommended structure to specify static power supply parameters. 177 * Generic one, parametrizable for different power supplies. Power supply 178 * class itself does not use it, but that's what implementing most platform 179 * drivers, should try reuse for consistency. 180 */ 181 182struct power_supply_info { 183 const char *name; 184 int technology; 185 int voltage_max_design; 186 int voltage_min_design; 187 int charge_full_design; 188 int charge_empty_design; 189 int energy_full_design; 190 int energy_empty_design; 191 int use_for_apm; 192}; 193 194extern struct power_supply *power_supply_get_by_name(char *name); 195extern void power_supply_changed(struct power_supply *psy); 196extern int power_supply_am_i_supplied(struct power_supply *psy); 197extern int power_supply_set_battery_charged(struct power_supply *psy); 198 199#if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE) 200extern int power_supply_is_system_supplied(void); 201#else 202static inline int power_supply_is_system_supplied(void) { return -ENOSYS; } 203#endif 204 205extern int power_supply_register(struct device *parent, 206 struct power_supply *psy); 207extern void power_supply_unregister(struct power_supply *psy); 208 209/* For APM emulation, think legacy userspace. */ 210extern struct class *power_supply_class; 211 212#endif /* __LINUX_POWER_SUPPLY_H__ */ 213