From 0e8b903b522b5a3cb473035cea085d396dd7150a Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sat, 26 Feb 2022 00:27:56 +0100 Subject: power: supply: ab8500: Standardize alert mode charging The AB8500 code is using a special current and voltage setting when the battery is in "alert mode", i.e. when it is starting to go outside normal operating conditions so it is too cold or too hot. This makes sense as a way for the charging algorithm to deal with hostile environments. Add the needed members to the struct power_supply_battery_info, and switch the AB8500 charging code over to using this. Reviewed-by: Matti Vaittineen Signed-off-by: Linus Walleij Signed-off-by: Sebastian Reichel --- include/linux/power_supply.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux/power_supply.h') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 8ced6550caa7..f8601598d3d3 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -444,6 +444,19 @@ struct power_supply_maintenance_charge_table { * after the main CC/CV charging phase is complete. * @maintenance_charge_size: the number of maintenance charging settings in * maintenance_charge. + * @alert_low_temp_charge_current_ua: The charging current to use if the battery + * enters low alert temperature, i.e. if the internal temperature is between + * temp_alert_min and temp_min. No matter the charging phase, this + * and alert_high_temp_charge_voltage_uv will be applied. + * @alert_low_temp_charge_voltage_uv: Same as alert_low_temp_charge_current_ua, + * but for the charging voltage. + * @alert_high_temp_charge_current_ua: The charging current to use if the + * battery enters high alert temperature, i.e. if the internal temperature is + * between temp_alert_max and temp_max. No matter the charging phase, this + * and alert_high_temp_charge_voltage_uv will be applied, usually lowering + * the charging current as an evasive manouver. + * @alert_high_temp_charge_voltage_uv: Same as + * alert_high_temp_charge_current_ua, but for the charging voltage. * @factory_internal_resistance_uohm: the internal resistance of the battery * at fabrication time, expressed in microohms. This resistance will vary * depending on the lifetime and charge of the battery, so this is just a @@ -595,6 +608,10 @@ struct power_supply_battery_info { int constant_charge_voltage_max_uv; struct power_supply_maintenance_charge_table *maintenance_charge; int maintenance_charge_size; + int alert_low_temp_charge_current_ua; + int alert_low_temp_charge_voltage_uv; + int alert_high_temp_charge_current_ua; + int alert_high_temp_charge_voltage_uv; int factory_internal_resistance_uohm; int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX]; int temp_ambient_alert_min; -- cgit v1.2.3