Commit 6a0fcc87 authored by Hermann Lauer's avatar Hermann Lauer Committed by Sebastian Reichel
Browse files

power: supply: axp20x_battery: allow disabling battery charging 



Allow disabling and re-enabling battery charging of an axp209 PMIC
through a writable status property. With the current driver code
charging is always on.

This works on the axp209 of Banana {Pi M1+,Pro} and should work on all
AXP chips.

Signed-off-by: default avatar <Hermann.Lauer@uni-heidelberg.de>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent cd70c85c

drivers/power/supply/axp20x_battery.c

+15 −2
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ 
#define AXP209_FG_PERCENT		GENMASK(6, 0)

#define AXP22X_FG_VALID			BIT(7)



#define AXP20X_CHRG_CTRL1_ENABLE	BIT(7)

#define AXP20X_CHRG_CTRL1_TGT_VOLT	GENMASK(6, 5)

#define AXP20X_CHRG_CTRL1_TGT_4_1V	(0 << 5)

#define AXP20X_CHRG_CTRL1_TGT_4_15V	(1 << 5)
@@ -468,7 +469,18 @@ static int axp20x_battery_set_prop(struct power_supply *psy, 
	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:

		return axp20x_set_max_constant_charge_current(axp20x_batt,

							      val->intval);

	case POWER_SUPPLY_PROP_STATUS:

		switch (val->intval) {

		case POWER_SUPPLY_STATUS_CHARGING:

			return regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1,

				AXP20X_CHRG_CTRL1_ENABLE, AXP20X_CHRG_CTRL1_ENABLE);



		case POWER_SUPPLY_STATUS_DISCHARGING:

		case POWER_SUPPLY_STATUS_NOT_CHARGING:

			return regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1,

				AXP20X_CHRG_CTRL1_ENABLE, 0);

		}

		fallthrough;

	default:

		return -EINVAL;

	}
@@ -491,7 +503,8 @@ static enum power_supply_property axp20x_battery_props[] = { 
static int axp20x_battery_prop_writeable(struct power_supply *psy,

					 enum power_supply_property psp)

{

	return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN ||

	return psp == POWER_SUPPLY_PROP_STATUS ||

	       psp == POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN ||

	       psp == POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN ||

	       psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT ||

	       psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX;