include/linux/power_supply.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
226 /* Run-time specific power supply configuration */
359  * struct power_supply_maintenance_charge_table - setting for maintenace charging
392  *  +-------------------------------------------------------------------> t
394  * Practically this means that the Li-ions are wandering back and forth in the
405  *  +-------------------------------------------------------------------> t
416  * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
431  * the expected stand-by current. Also overvoltage protection will be applied
443  * struct power_supply_battery_info - information about batteries
513  * @ocv_temp: array indicating the open circuit voltage (OCV) capacity
544  *   resistance of the battery is usually necessary for calculating the open
545  *   circuit voltage (OCV) that is then used with the ocv_table to calculate
553  *   determine the open circuit voltage so that we can determine the capacity
570  *   for example 10 for +/- 10%, if the bti_resistance is set to 7000 and the
579  * The default field value is -EINVAL or NULL for pointers.
588  * |                                               --- overvoltage_limit_uv
601  * +------------------------------------------------------------------> time
618  * +-----------------------------------------------------------------> time
629  * 2. Next a small initial pre-charge current (precharge_current_ua)
670  * many chargers uses a so-called fuel gauge or coloumb counter that measure
671  * how much charge goes into the battery and how much goes out (+/- leak
675  * the open circuit voltage with a look-up table to determine the rough
676  * capacity of the battery. The open circuit voltage can be conceptualized
680  *      +-------> IBAT >----------------+
684  *      o <----------        |          |
686  *    .---.         |        |          |
688  *    '---'         |        |          |
690  *  GND +-------------------------------+
705  *   OCV = VBAT - (IBAT * Ri)
710  * some batteries. This gives the compensated open circuit voltage (OCV) for
841 	return ((info->vbat2ri_discharging != NULL) &&  in power_supply_supports_vbat2ri()
842 		info->vbat2ri_discharging_size > 0);  in power_supply_supports_vbat2ri()
848 	return ((info->resist_table != NULL) &&  in power_supply_supports_temp2ri()
849 		info->resist_table_size > 0);  in power_supply_supports_temp2ri()
855 static inline int power_supply_is_system_supplied(void) { return -ENOSYS; }  in power_supply_is_system_supplied()
981 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_show()
987 	return -EOPNOTSUPP;  in power_supply_charge_behaviour_parse()