AXP813 and AXP803 PMICs can control input current and minimum voltage.
Both of these values are configurable.
Signed-off-by: Oskari Lemmela
Reviewed-by: Quentin Schulz
---
drivers/power/supply/axp20x_ac_power.c | 94 ++
include/linux/mfd/axp20x.h | 1 +
2 files changed, 95 insertions(+)
diff --git a/drivers/power/supply/axp20x_ac_power.c
b/drivers/power/supply/axp20x_ac_power.c
index 0771f951b11f..59b4c8d3b961 100644
--- a/drivers/power/supply/axp20x_ac_power.c
+++ b/drivers/power/supply/axp20x_ac_power.c
@@ -27,6 +27,16 @@
#define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7)
#define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6)
+#define AXP813_VHOLD_MASK GENMASK(5, 3)
+#define AXP813_VHOLD_UV_TO_BIT(x) x) / 10) - 40) << 3)
+#define AXP813_VHOLD_REG_TO_UV(x) \
+ (x) & AXP813_VHOLD_MASK) >> 3) + 40) * 10)
+
+#define AXP813_CURR_LIMIT_MASK GENMASK(2, 0)
+#define AXP813_CURR_LIMIT_UA_TO_BIT(x) (((x) / 50) - 3)
+#define AXP813_CURR_LIMIT_REG_TO_UA(x) \
+ x) & AXP813_CURR_LIMIT_MASK) + 3) * 50)
+
#define DRVNAME "axp20x-ac-power-supply"
struct axp20x_ac_power {
@@ -102,6 +112,57 @@ static int axp20x_ac_power_get_property(struct
power_supply *psy,
return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
+ if (ret)
+ return ret;
+
+ val->intval = AXP813_VHOLD_REG_TO_UV(reg);
+
+ return 0;
+
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
+ if (ret)
+ return ret;
+
+ val->intval = AXP813_CURR_LIMIT_REG_TO_UA(reg);
+ /* AXP813 datasheet defines values 11x as 4000mA */
+ if (val->intval > 400)
+ val->intval = 400;
+
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int axp813_ac_power_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ if (val->intval < 400 || val->intval > 470)
+ return -EINVAL;
+
+ return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
+ AXP813_VHOLD_MASK,
+ AXP813_VHOLD_UV_TO_BIT(val->intval));
+
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ if (val->intval < 150 || val->intval > 400)
+ return -EINVAL;
+
+ return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
+ AXP813_CURR_LIMIT_MASK,
+
AXP813_CURR_LIMIT_UA_TO_BIT(val->intval));
+
default:
return -EINVAL;
}
@@ -109,6 +170,13 @@ static int axp20x_ac_power_get_property(struct
power_supply *psy,
return -EINVAL;
}
+static int axp813_ac_power_prop_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
+ psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
+}
+
static enum power_supply_property axp20x_ac_power_properties[] = {
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
@@ -123,6 +191,14 @@ static enum power_supply_property
axp22x_ac_power_properties[] = {
POWER_SUPPLY_PROP_ONLINE,
};
+static enum power_supply_property axp813_ac_power_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN,
+ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+};
+
static const struct power_supply_desc axp20x_ac_power_desc = {
.name = "axp20x-ac",
.type = POWER_SUPPLY_TYPE_MAINS,
@@ -139,6 +215,16 @@ static const struct power_supply_desc axp22x_ac_power_desc
= {
.get_property = axp20x_ac_power_get_property,
};
+static const struct power_supply_desc axp813_ac_power_desc = {
+ .name = "axp813-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = axp813_ac_power_properties,
+ .num_properties = ARRAY_SIZE(axp813_ac_power_properties),
+ .property_is_writeable = axp813_ac_power_prop_writeable,
+ .get_property = axp20x_ac_power_get_property,
+ .set_property = axp813_ac_power_set_property,
+};
+
struct axp_data {
const struct power_supply_desc *power_desc;
boolacin_adc;
@@
