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power_supply.h
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power_supply.h
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/*
* Universal power supply monitor class
*
* Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
* Copyright © 2004 Szabolcs Gyurko
* Copyright © 2003 Ian Molton <spyro@f2s.com>
*
* Modified: 2004, Oct Szabolcs Gyurko
*
* You may use this code as per GPL version 2
*/
#ifndef __LINUX_POWER_SUPPLY_H__
#define __LINUX_POWER_SUPPLY_H__
#include <linux/workqueue.h>
#include <linux/leds.h>
struct device;
/*
* All voltages, currents, charges, energies, time and temperatures in uV,
* µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise
* stated. It's driver's job to convert its raw values to units in which
* this class operates.
*/
/*
* For systems where the charger determines the maximum battery capacity
* the min and max fields should be used to present these values to user
* space. Unused/unknown fields will not appear in sysfs.
*/
enum {
POWER_SUPPLY_STATUS_UNKNOWN = 0,
POWER_SUPPLY_STATUS_CHARGING,
POWER_SUPPLY_STATUS_DISCHARGING,
POWER_SUPPLY_STATUS_NOT_CHARGING,
POWER_SUPPLY_STATUS_FULL,
};
enum {
POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
POWER_SUPPLY_CHARGE_TYPE_NONE,
POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
POWER_SUPPLY_CHARGE_TYPE_FAST,
POWER_SUPPLY_CHARGE_TYPE_TAPER,
POWER_SUPPLY_CHARGE_TYPE_SLOW,
};
enum {
POWER_SUPPLY_HEALTH_UNKNOWN = 0,
POWER_SUPPLY_HEALTH_GOOD,
POWER_SUPPLY_HEALTH_OVERHEAT,
POWER_SUPPLY_HEALTH_WARM,
POWER_SUPPLY_HEALTH_DEAD,
POWER_SUPPLY_HEALTH_OVERVOLTAGE,
POWER_SUPPLY_HEALTH_UNSPEC_FAILURE,
POWER_SUPPLY_HEALTH_COLD,
POWER_SUPPLY_HEALTH_COOL,
POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE,
POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE,
POWER_SUPPLY_HEALTH_UNDERVOLTAGE,
POWER_SUPPLY_HEALTH_OVERHEATLIMIT,
};
enum {
POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0,
POWER_SUPPLY_TECHNOLOGY_NiMH,
POWER_SUPPLY_TECHNOLOGY_LION,
POWER_SUPPLY_TECHNOLOGY_LIPO,
POWER_SUPPLY_TECHNOLOGY_LiFe,
POWER_SUPPLY_TECHNOLOGY_NiCd,
POWER_SUPPLY_TECHNOLOGY_LiMn,
};
enum {
POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
POWER_SUPPLY_CAPACITY_LEVEL_LOW,
POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
POWER_SUPPLY_CAPACITY_LEVEL_FULL,
};
enum {
POWER_SUPPLY_SCOPE_UNKNOWN = 0,
POWER_SUPPLY_SCOPE_SYSTEM,
POWER_SUPPLY_SCOPE_DEVICE,
};
enum power_supply_property {
/* Properties of type `int' */
POWER_SUPPLY_PROP_STATUS = 0,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_AUTHENTIC,
POWER_SUPPLY_PROP_CHARGING_ENABLED,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MAX,
POWER_SUPPLY_PROP_VOLTAGE_MIN,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_AVG,
POWER_SUPPLY_PROP_VOLTAGE_OCV,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION,
POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_INPUT_CURRENT_MAX,
POWER_SUPPLY_PROP_INPUT_CURRENT_TRIM,
POWER_SUPPLY_PROP_INPUT_CURRENT_SETTLED,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_POWER_NOW,
POWER_SUPPLY_PROP_POWER_AVG,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_EMPTY,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_CHARGE_AVG,
POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CHARGE_COUNTER_SHADOW,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
POWER_SUPPLY_PROP_ENERGY_EMPTY,
POWER_SUPPLY_PROP_ENERGY_NOW,
POWER_SUPPLY_PROP_ENERGY_AVG,
POWER_SUPPLY_PROP_HI_POWER,
POWER_SUPPLY_PROP_LOW_POWER,
POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_ALERT_MAX, /* in percents! */
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
POWER_SUPPLY_PROP_COOL_TEMP,
POWER_SUPPLY_PROP_WARM_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MIN,
POWER_SUPPLY_PROP_TEMP_AMBIENT_ALERT_MAX,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL,
POWER_SUPPLY_PROP_RESISTANCE,
POWER_SUPPLY_PROP_RESISTANCE_CAPACITIVE,
/* Local extensions */
POWER_SUPPLY_PROP_USB_HC,
POWER_SUPPLY_PROP_USB_OTG,
POWER_SUPPLY_PROP_CHARGE_ENABLED,
/* Properties of type `const char *' */
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
POWER_SUPPLY_PROP_SERIAL_NUMBER,
POWER_SUPPLY_PROP_BATTERY_TYPE,
};
enum power_supply_type {
POWER_SUPPLY_TYPE_UNKNOWN = 0,
POWER_SUPPLY_TYPE_BATTERY, /* 1 */
POWER_SUPPLY_TYPE_UPS, /* 2 */
POWER_SUPPLY_TYPE_MAINS, /* 3 */
POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port (4) */
POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port (5) */
POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port (6) */
POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters (7) */
POWER_SUPPLY_TYPE_BMS, /* Battery Monitor System (8) */
POWER_SUPPLY_TYPE_MISC, /* 9 */
POWER_SUPPLY_TYPE_WIRELESS, /* 10 */
POWER_SUPPLY_TYPE_CARDOCK, /* 11 */
POWER_SUPPLY_TYPE_UARTOFF, /* 12 */
POWER_SUPPLY_TYPE_OTG, /* 13 */
POWER_SUPPLY_TYPE_LAN_HUB, /* 14 */
POWER_SUPPLY_TYPE_MHL_500, /* 15 */
POWER_SUPPLY_TYPE_MHL_900, /* 16 */
POWER_SUPPLY_TYPE_MHL_1500, /* 17 */
POWER_SUPPLY_TYPE_MHL_2000, /* 18 */
POWER_SUPPLY_TYPE_MHL_USB, /* 19 */
POWER_SUPPLY_TYPE_MHL_USB_100, /* 20 */
POWER_SUPPLY_TYPE_SMART_OTG, /* 21 */
POWER_SUPPLY_TYPE_SMART_NOTG, /* 22 */
POWER_SUPPLY_TYPE_POWER_SHARING, /* power sharing cable (23) */
POWER_SUPPLY_TYPE_HV_PREPARE_MAINS, /* Prepare Adaptive Charger (24) */
POWER_SUPPLY_TYPE_HV_ERR, /* Adaptive Charger Err (25) */
POWER_SUPPLY_TYPE_HV_UNKNOWN, /* Adaptive Charger Unknown (26) */
POWER_SUPPLY_TYPE_HV_MAINS, /* Adaptive Charger (27) */
POWER_SUPPLY_TYPE_MDOCK_TA, /* MMdock charger (28) */
POWER_SUPPLY_TYPE_USB_PARALLEL, /* USB Parallel Path */
POWER_SUPPLY_TYPE_MAX,
};
union power_supply_propval {
int intval;
const char *strval;
};
struct power_supply {
const char *name;
enum power_supply_type type;
enum power_supply_property *properties;
size_t num_properties;
char **supplied_to;
size_t num_supplicants;
char **supplied_from;
size_t num_supplies;
#ifdef CONFIG_OF
struct device_node *of_node;
#endif
int (*get_property)(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val);
int (*set_property)(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val);
int (*property_is_writeable)(struct power_supply *psy,
enum power_supply_property psp);
void (*external_power_changed)(struct power_supply *psy);
void (*set_charged)(struct power_supply *psy);
/* For APM emulation, think legacy userspace. */
int use_for_apm;
/* private */
struct device *dev;
struct work_struct changed_work;
spinlock_t changed_lock;
bool changed;
#ifdef CONFIG_THERMAL
struct thermal_zone_device *tzd;
struct thermal_cooling_device *tcd;
#endif
#ifdef CONFIG_LEDS_TRIGGERS
struct led_trigger *charging_full_trig;
char *charging_full_trig_name;
struct led_trigger *charging_trig;
char *charging_trig_name;
struct led_trigger *full_trig;
char *full_trig_name;
struct led_trigger *online_trig;
char *online_trig_name;
struct led_trigger *charging_blink_full_solid_trig;
char *charging_blink_full_solid_trig_name;
#endif
};
/*
* This is recommended structure to specify static power supply parameters.
* Generic one, parametrizable for different power supplies. Power supply
* class itself does not use it, but that's what implementing most platform
* drivers, should try reuse for consistency.
*/
struct power_supply_info {
const char *name;
int technology;
int voltage_max_design;
int voltage_min_design;
int charge_full_design;
int charge_empty_design;
int energy_full_design;
int energy_empty_design;
int use_for_apm;
};
#if defined(CONFIG_POWER_SUPPLY)
extern struct power_supply *power_supply_get_by_name(const char *name);
extern void power_supply_changed(struct power_supply *psy);
extern int power_supply_am_i_supplied(struct power_supply *psy);
extern int power_supply_set_battery_charged(struct power_supply *psy);
extern int power_supply_set_current_limit(struct power_supply *psy, int limit);
extern int power_supply_set_online(struct power_supply *psy, bool enable);
extern int power_supply_set_health_state(struct power_supply *psy, int health);
extern int power_supply_set_present(struct power_supply *psy, bool enable);
extern int power_supply_set_scope(struct power_supply *psy, int scope);
extern int power_supply_set_usb_otg(struct power_supply *psy, int otg);
extern int power_supply_set_charge_type(struct power_supply *psy, int type);
extern int power_supply_set_supply_type(struct power_supply *psy,
enum power_supply_type supply_type);
extern int power_supply_set_hi_power_state(struct power_supply *psy, int value);
extern int power_supply_set_low_power_state(struct power_supply *psy,
int value);
extern int power_supply_is_system_supplied(void);
extern int power_supply_register(struct device *parent,
struct power_supply *psy);
extern void power_supply_unregister(struct power_supply *psy);
extern int power_supply_powers(struct power_supply *psy, struct device *dev);
#else
static inline struct power_supply *power_supply_get_by_name(char *name)
{ return NULL; }
static inline void power_supply_changed(struct power_supply *psy) { }
static inline int power_supply_am_i_supplied(struct power_supply *psy)
{ return -ENOSYS; }
static inline int power_supply_set_battery_charged(struct power_supply *psy)
{ return -ENOSYS; }
static inline int power_supply_set_current_limit(struct power_supply *psy,
int limit)
{ return -ENOSYS; }
static inline int power_supply_set_online(struct power_supply *psy,
bool enable)
{ return -ENOSYS; }
static inline int power_supply_set_health_state(struct power_supply *psy,
int health)
{ return -ENOSYS; }
static inline int power_supply_set_present(struct power_supply *psy,
bool enable)
{ return -ENOSYS; }
static inline int power_supply_set_scope(struct power_supply *psy,
int scope)
{ return -ENOSYS; }
static inline int power_supply_set_usb_otg(struct power_supply *psy, int otg)
{ return -ENOSYS; }
static inline int power_supply_set_charge_type(struct power_supply *psy,
int type)
{ return -ENOSYS; }
static inline int power_supply_set_supply_type(struct power_supply *psy,
enum power_supply_type supply_type)
{ return -ENOSYS; }
static inline int power_supply_set_hi_power_state(struct power_supply *psy,
int value)
{ return -ENOSYS; }
static inline int power_supply_set_low_power_state(struct power_supply *psy,
int value)
{ return -ENOSYS; }
static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
static inline int power_supply_register(struct device *parent,
struct power_supply *psy)
{ return -ENOSYS; }
static inline void power_supply_unregister(struct power_supply *psy) { }
static inline int power_supply_powers(struct power_supply *psy,
struct device *dev)
{ return -ENOSYS; }
#endif
/* For APM emulation, think legacy userspace. */
extern struct class *power_supply_class;
static inline bool power_supply_is_amp_property(enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
case POWER_SUPPLY_PROP_CHARGE_FULL:
case POWER_SUPPLY_PROP_CHARGE_EMPTY:
case POWER_SUPPLY_PROP_CHARGE_NOW:
case POWER_SUPPLY_PROP_CHARGE_AVG:
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
case POWER_SUPPLY_PROP_CHARGE_COUNTER_SHADOW:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
case POWER_SUPPLY_PROP_CURRENT_MAX:
case POWER_SUPPLY_PROP_INPUT_CURRENT_MAX:
case POWER_SUPPLY_PROP_CURRENT_NOW:
case POWER_SUPPLY_PROP_CURRENT_AVG:
return 1;
default:
break;
}
return 0;
}
static inline bool power_supply_is_watt_property(enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
case POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN:
case POWER_SUPPLY_PROP_ENERGY_FULL:
case POWER_SUPPLY_PROP_ENERGY_EMPTY:
case POWER_SUPPLY_PROP_ENERGY_NOW:
case POWER_SUPPLY_PROP_ENERGY_AVG:
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
case POWER_SUPPLY_PROP_POWER_NOW:
return 1;
default:
break;
}
return 0;
}
#endif /* __LINUX_POWER_SUPPLY_H__ */