include/linux/power

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This source file includes following definitions.
power_supply_get_by_phandle
power_supply_is_system_supplied
power_supply_is_amp_property
power_supply_is_watt_property
/*
 *  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>
#include <linux/spinlock.h>
#include <linux/notifier.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_CHARGE_TYPE_UNKNOWN = 0,
        POWER_SUPPLY_CHARGE_TYPE_NONE,
        POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
        POWER_SUPPLY_CHARGE_TYPE_FAST,
};

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,
        POWER_SUPPLY_HEALTH_COLD,
        POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE,
        POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE,
};

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_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_VOLTAGE_BOOT,
        POWER_SUPPLY_PROP_CURRENT_MAX,
        POWER_SUPPLY_PROP_CURRENT_NOW,
        POWER_SUPPLY_PROP_CURRENT_AVG,
        POWER_SUPPLY_PROP_CURRENT_BOOT,
        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_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_INPUT_CURRENT_LIMIT,
        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_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_MAX,
        POWER_SUPPLY_PROP_TEMP_MIN,
        POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
        POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
        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_CHARGE_TERM_CURRENT,
        POWER_SUPPLY_PROP_CALIBRATE,
        /* Properties of type `const char *' */
        POWER_SUPPLY_PROP_MODEL_NAME,
        POWER_SUPPLY_PROP_MANUFACTURER,
        POWER_SUPPLY_PROP_SERIAL_NUMBER,
};

enum power_supply_type {
        POWER_SUPPLY_TYPE_UNKNOWN = 0,
        POWER_SUPPLY_TYPE_BATTERY,
        POWER_SUPPLY_TYPE_UPS,
        POWER_SUPPLY_TYPE_MAINS,
        POWER_SUPPLY_TYPE_USB,          /* Standard Downstream Port */
        POWER_SUPPLY_TYPE_USB_DCP,      /* Dedicated Charging Port */
        POWER_SUPPLY_TYPE_USB_CDP,      /* Charging Downstream Port */
        POWER_SUPPLY_TYPE_USB_ACA,      /* Accessory Charger Adapters */
};

enum power_supply_notifier_events {
        PSY_EVENT_PROP_CHANGED,
};

union power_supply_propval {
        int intval;
        const char *strval;
};

struct device;
struct device_node;

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;
        struct device_node *of_node;

        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);

        /*
         * Set if thermal zone should not be created for this power supply.
         * For example for virtual supplies forwarding calls to actual
         * sensors or other supplies.
         */
        bool no_thermal;
        /* 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;
};

extern struct atomic_notifier_head power_supply_notifier;
extern int power_supply_reg_notifier(struct notifier_block *nb);
extern void power_supply_unreg_notifier(struct notifier_block *nb);
extern struct power_supply *power_supply_get_by_name(const char *name);
#ifdef CONFIG_OF
extern struct power_supply *power_supply_get_by_phandle(struct device_node *np,
                                                        const char *property);
#else /* !CONFIG_OF */
static inline struct power_supply *
power_supply_get_by_phandle(struct device_node *np, const char *property)
{ return NULL; }
#endif /* CONFIG_OF */
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);

#ifdef CONFIG_POWER_SUPPLY
extern int power_supply_is_system_supplied(void);
#else
static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }
#endif

extern int power_supply_register(struct device *parent,
                                 struct power_supply *psy);
extern int power_supply_register_no_ws(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);

/* 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_CONSTANT_CHARGE_CURRENT:
        case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
        case POWER_SUPPLY_PROP_CURRENT_MAX:
        case POWER_SUPPLY_PROP_CURRENT_NOW:
        case POWER_SUPPLY_PROP_CURRENT_AVG:
        case POWER_SUPPLY_PROP_CURRENT_BOOT:
                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_VOLTAGE_BOOT:
        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__ */
/* [<][>][^][v][top][bottom][index][help] */
root/include/linux/power_supply.h

INCLUDED FROM

DEFINITIONS
