power: supply: core: Add a field to support battery max voltage

Add a field for "voltage_max_design_uv" to present fully charged
battery voltage.
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/power_supply_core.c

@@ -573,6 +573,7 @@ int power_supply_get_battery_info(struct power_supply *psy,
 	info->energy_full_design_uwh         = -EINVAL;
 	info->charge_full_design_uah         = -EINVAL;
 	info->voltage_min_design_uv          = -EINVAL;
+	info->voltage_max_design_uv          = -EINVAL;
 	info->precharge_current_ua           = -EINVAL;
 	info->charge_term_current_ua         = -EINVAL;
 	info->constant_charge_current_max_ua = -EINVAL;
@@ -613,6 +614,8 @@ int power_supply_get_battery_info(struct power_supply *psy,
 			     &info->charge_full_design_uah);
 	of_property_read_u32(battery_np, "voltage-min-design-microvolt",
 			     &info->voltage_min_design_uv);
+	of_property_read_u32(battery_np, "voltage-max-design-microvolt",
+			     &info->voltage_max_design_uv);
 	of_property_read_u32(battery_np, "precharge-current-microamp",
 			     &info->precharge_current_ua);
 	of_property_read_u32(battery_np, "charge-term-current-microamp",

include/linux/power_supply.h

@@ -332,6 +332,7 @@ struct power_supply_battery_info {
 	int energy_full_design_uwh;	    /* microWatt-hours */
 	int charge_full_design_uah;	    /* microAmp-hours */
 	int voltage_min_design_uv;	    /* microVolts */
+	int voltage_max_design_uv;	    /* microVolts */
 	int precharge_current_ua;	    /* microAmps */
 	int charge_term_current_ua;	    /* microAmps */
 	int constant_charge_current_max_ua; /* microAmps */