include/linux/power_supply.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
230 /* Run-time specific power supply configuration */
386  * struct power_supply_maintenance_charge_table - setting for maintenace charging
419  *  +-------------------------------------------------------------------> t
421  * Practically this means that the Li-ions are wandering back and forth in the
432  *  +-------------------------------------------------------------------> t
443  * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
458  * the expected stand-by current. Also overvoltage protection will be applied
470  * struct power_supply_battery_info - information about batteries
482  * @tricklecharge_current_ua: the tricklecharge current used when trickle
484  *   battery is completely empty and we need to carefully trickle in some
593  *   in ohms for this battery, if an identification resistor is mounted
597  *   for example 10 for +/- 10%, if the bti_resistance is set to 7000 and the
606  * The default field value is -EINVAL or NULL for pointers.
615  * |                                               --- overvoltage_limit_uv
627  * |. (trickle charging)
628  * +------------------------------------------------------------------> time
645  * +-----------------------------------------------------------------> time
653  *    an especially small current so that electrons just "trickle in",
656  * 2. Next a small initial pre-charge current (precharge_current_ua)
659  *    to as "trickle charging" but the use in the Linux kernel is different
697  * many chargers uses a so-called fuel gauge or coloumb counter that measure
698  * how much charge goes into the battery and how much goes out (+/- leak
702  * the open circuit voltage with a look-up table to determine the rough
707  *      +-------> IBAT >----------------+
711  *      o <----------        |          |
713  *    .---.         |        |          |
715  *    '---'         |        |          |
717  *  GND +-------------------------------+
732  *   OCV = VBAT - (IBAT * Ri)
867 	return ((info->vbat2ri_discharging != NULL) &&  in power_supply_supports_vbat2ri()
868 		info->vbat2ri_discharging_size > 0);  in power_supply_supports_vbat2ri()
874 	return ((info->resist_table != NULL) &&  in power_supply_supports_temp2ri()
875 		info->resist_table_size > 0);  in power_supply_supports_temp2ri()
881 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }  in power_supply_is_system_supplied()
996 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_show()
1002 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_parse()
1011 	return -EOPNOTSUPP;  in power_supply_charge_types_show()
1016 	return -EOPNOTSUPP;  in power_supply_charge_types_parse()