power_supply_get_property_direct
ret = power_supply_get_property_direct(battery, POWER_SUPPLY_PROP_SERIAL_NUMBER, &val);
ret = power_supply_get_property_direct(psy, POWER_SUPPLY_PROP_PRESENT, &prop);
ret = power_supply_get_property_direct(psy, POWER_SUPPLY_PROP_STATUS, &prop);
EXPORT_SYMBOL_GPL(power_supply_get_property_direct);
return power_supply_get_property_direct(psy, POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
int power_supply_get_property_direct(struct power_supply *psy, enum power_supply_property psp,