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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/device.h>

#include <linux/workqueue.h>

#include <linux/leds.h>

/*

 * 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_HEALTH_UNKNOWN = 0,

        POWER_SUPPLY_HEALTH_GOOD,

        POWER_SUPPLY_HEALTH_OVERHEAT,

        POWER_SUPPLY_HEALTH_DEAD,

        POWER_SUPPLY_HEALTH_OVERVOLTAGE,

        POWER_SUPPLY_HEALTH_UNSPEC_FAILURE,

};

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,

};

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_property {

        /* Properties of type `int' */

        POWER_SUPPLY_PROP_STATUS = 0,

        POWER_SUPPLY_PROP_HEALTH,

        POWER_SUPPLY_PROP_PRESENT,

        POWER_SUPPLY_PROP_ONLINE,

        POWER_SUPPLY_PROP_TECHNOLOGY,

        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_CURRENT_NOW,

        POWER_SUPPLY_PROP_CURRENT_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_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_CAPACITY, /* in percents! */

        POWER_SUPPLY_PROP_CAPACITY_LEVEL,

        POWER_SUPPLY_PROP_TEMP,

        POWER_SUPPLY_PROP_TEMP_AMBIENT,

        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,

        /* Properties of type `const char *' */

        POWER_SUPPLY_PROP_MODEL_NAME,

        POWER_SUPPLY_PROP_MANUFACTURER,

};

enum power_supply_type {

        POWER_SUPPLY_TYPE_BATTERY = 0,

        POWER_SUPPLY_TYPE_UPS,

        POWER_SUPPLY_TYPE_MAINS,

        POWER_SUPPLY_TYPE_USB,

};

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;

        int (*get_property)(struct power_supply *psy,

                            enum power_supply_property psp,

                            union power_supply_propval *val);

        void (*external_power_changed)(struct power_supply *psy);

        /* For APM emulation, think legacy userspace. */

        int use_for_apm;

        /* private */

        struct device *dev;

        struct work_struct changed_work;

#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;

#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;

};

extern void power_supply_changed(struct power_supply *psy);

extern int power_supply_am_i_supplied(struct power_supply *psy);

extern int power_supply_register(struct device *parent,

                                 struct power_supply *psy);

extern void power_supply_unregister(struct power_supply *psy);

/* For APM emulation, think legacy userspace. */

extern struct class *power_supply_class;

#endif /* __LINUX_POWER_SUPPLY_H__ */