include/linux/power_supply.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
226 /* Run-time specific power supply configuration */
354  * struct power_supply_maintenance_charge_table - setting for maintenace charging
387  *  +-------------------------------------------------------------------> t
389  * Practically this means that the Li-ions are wandering back and forth in the
400  *  +-------------------------------------------------------------------> t
411  * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
426  * the expected stand-by current. Also overvoltage protection will be applied
438  * struct power_supply_battery_info - information about batteries
455  *   the precharge rate is limited by limiting the current to this value.
461  *   charging phase drops below this value in microamperes the charging will
466  *   drops below this value in microvolts, the charging will be restarted
505  *   so this value provides a better resistance under these circumstances.
565  *   for example 10 for +/- 10%, if the bti_resistance is set to 7000 and the
574  * The default field value is -EINVAL or NULL for pointers.
583  * |                                               --- overvoltage_limit_uv
596  * +------------------------------------------------------------------> time
613  * +-----------------------------------------------------------------> time
624  * 2. Next a small initial pre-charge current (precharge_current_ua)
665  * many chargers uses a so-called fuel gauge or coloumb counter that measure
666  * how much charge goes into the battery and how much goes out (+/- leak
670  * the open circuit voltage with a look-up table to determine the rough
672  * with an ideal voltage source (V) in series with an internal resistance (Ri)
675  *      +-------> IBAT >----------------+
679  *      o <----------        |          |
681  *    .---.         |        |          |
683  *    '---'         |        |          |
685  *  GND +-------------------------------+
700  *   OCV = VBAT - (IBAT * Ri)
712  * is dependent on the battery temperature which is the main factor affecting
836 	return ((info->vbat2ri_discharging != NULL) &&  in power_supply_supports_vbat2ri()
837 		info->vbat2ri_discharging_size > 0);  in power_supply_supports_vbat2ri()
843 	return ((info->resist_table != NULL) &&  in power_supply_supports_temp2ri()
844 		info->resist_table_size > 0);  in power_supply_supports_temp2ri()
850 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }  in power_supply_is_system_supplied()
975 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_show()
981 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_parse()