diff options
| author | Hermann Lauer <Hermann.Lauer@iwr.uni-heidelberg.de> | 2021-05-12 12:58:56 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2021-06-04 14:12:42 +0200 |
| commit | 6a0fcc87c9e35191d37a8819fdab9d30e523515b (patch) | |
| tree | e33818d9bb69c53b10dd5c96f31775788d8cf712 | |
| parent | cd70c85c5752f060b09b0cf5b7694717471ce998 (diff) | |
| download | linux-6a0fcc87c9e35191d37a8819fdab9d30e523515b.tar.gz | |
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: Hermann.Lauer@uni-heidelberg.de
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
| -rw-r--r-- | drivers/power/supply/axp20x_battery.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c index e84b6e4da14a..18a9db0df4b1 100644 --- a/drivers/power/supply/axp20x_battery.c +++ b/drivers/power/supply/axp20x_battery.c @@ -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; |