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path: root/drivers/power/supply/axp20x_battery.c
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Diffstat (limited to 'drivers/power/supply/axp20x_battery.c')
-rw-r--r--drivers/power/supply/axp20x_battery.c136
1 files changed, 105 insertions, 31 deletions
diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index 7494f0f0eadb..e84b6e4da14a 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -49,10 +49,22 @@
#define AXP22X_CHRG_CTRL1_TGT_4_22V (1 << 5)
#define AXP22X_CHRG_CTRL1_TGT_4_24V (3 << 5)
+#define AXP813_CHRG_CTRL1_TGT_4_35V (3 << 5)
+
#define AXP20X_CHRG_CTRL1_TGT_CURR GENMASK(3, 0)
#define AXP20X_V_OFF_MASK GENMASK(2, 0)
+struct axp20x_batt_ps;
+
+struct axp_data {
+ int ccc_scale;
+ int ccc_offset;
+ bool has_fg_valid;
+ int (*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
+ int (*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
+};
+
struct axp20x_batt_ps {
struct regmap *regmap;
struct power_supply *batt;
@@ -62,7 +74,7 @@ struct axp20x_batt_ps {
struct iio_channel *batt_v;
/* Maximum constant charge current */
unsigned int max_ccc;
- u8 axp_id;
+ const struct axp_data *data;
};
static int axp20x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
@@ -123,20 +135,33 @@ static int axp22x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
return 0;
}
-static void raw_to_constant_charge_current(struct axp20x_batt_ps *axp, int *val)
+static int axp813_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
+ int *val)
{
- if (axp->axp_id == AXP209_ID)
- *val = *val * 100000 + 300000;
- else
- *val = *val * 150000 + 300000;
-}
+ int ret, reg;
-static void constant_charge_current_to_raw(struct axp20x_batt_ps *axp, int *val)
-{
- if (axp->axp_id == AXP209_ID)
- *val = (*val - 300000) / 100000;
- else
- *val = (*val - 300000) / 150000;
+ ret = regmap_read(axp20x_batt->regmap, AXP20X_CHRG_CTRL1, &reg);
+ if (ret)
+ return ret;
+
+ switch (reg & AXP20X_CHRG_CTRL1_TGT_VOLT) {
+ case AXP20X_CHRG_CTRL1_TGT_4_1V:
+ *val = 4100000;
+ break;
+ case AXP20X_CHRG_CTRL1_TGT_4_15V:
+ *val = 4150000;
+ break;
+ case AXP20X_CHRG_CTRL1_TGT_4_2V:
+ *val = 4200000;
+ break;
+ case AXP813_CHRG_CTRL1_TGT_4_35V:
+ *val = 4350000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
}
static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
@@ -150,7 +175,7 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
*val &= AXP20X_CHRG_CTRL1_TGT_CURR;
- raw_to_constant_charge_current(axp, val);
+ *val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
return 0;
}
@@ -269,8 +294,7 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
if (ret)
return ret;
- if (axp20x_batt->axp_id == AXP221_ID &&
- !(reg & AXP22X_FG_VALID))
+ if (axp20x_batt->data->has_fg_valid && !(reg & AXP22X_FG_VALID))
return -EINVAL;
/*
@@ -281,11 +305,8 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
- if (axp20x_batt->axp_id == AXP209_ID)
- return axp20x_battery_get_max_voltage(axp20x_batt,
- &val->intval);
- return axp22x_battery_get_max_voltage(axp20x_batt,
- &val->intval);
+ return axp20x_batt->data->get_max_voltage(axp20x_batt,
+ &val->intval);
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
ret = regmap_read(axp20x_batt->regmap, AXP20X_V_OFF, &reg);
@@ -312,6 +333,32 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
return 0;
}
+static int axp22x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
+ int val)
+{
+ switch (val) {
+ case 4100000:
+ val = AXP20X_CHRG_CTRL1_TGT_4_1V;
+ break;
+
+ case 4200000:
+ val = AXP20X_CHRG_CTRL1_TGT_4_2V;
+ break;
+
+ default:
+ /*
+ * AXP20x max voltage can be set to 4.36V and AXP22X max voltage
+ * can be set to 4.22V and 4.24V, but these voltages are too
+ * high for Lithium based batteries (AXP PMICs are supposed to
+ * be used with these kinds of battery).
+ */
+ return -EINVAL;
+ }
+
+ return regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1,
+ AXP20X_CHRG_CTRL1_TGT_VOLT, val);
+}
+
static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
int val)
{
@@ -321,9 +368,6 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
break;
case 4150000:
- if (axp20x_batt->axp_id == AXP221_ID)
- return -EINVAL;
-
val = AXP20X_CHRG_CTRL1_TGT_4_15V;
break;
@@ -351,7 +395,8 @@ static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt,
if (charge_current > axp_batt->max_ccc)
return -EINVAL;
- constant_charge_current_to_raw(axp_batt, &charge_current);
+ charge_current = (charge_current - axp_batt->data->ccc_offset) /
+ axp_batt->data->ccc_scale;
if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
return -EINVAL;
@@ -365,12 +410,14 @@ static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp,
{
bool lower_max = false;
- constant_charge_current_to_raw(axp, &charge_current);
+ charge_current = (charge_current - axp->data->ccc_offset) /
+ axp->data->ccc_scale;
if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
return -EINVAL;
- raw_to_constant_charge_current(axp, &charge_current);
+ charge_current = charge_current * axp->data->ccc_scale +
+ axp->data->ccc_offset;
if (charge_current > axp->max_ccc)
dev_warn(axp->dev,
@@ -413,7 +460,7 @@ static int axp20x_battery_set_prop(struct power_supply *psy,
return axp20x_set_voltage_min_design(axp20x_batt, val->intval);
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
- return axp20x_battery_set_max_voltage(axp20x_batt, val->intval);
+ return axp20x_batt->data->set_max_voltage(axp20x_batt, val->intval);
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
return axp20x_set_constant_charge_current(axp20x_batt,
@@ -460,13 +507,39 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
.set_property = axp20x_battery_set_prop,
};
+static const struct axp_data axp209_data = {
+ .ccc_scale = 100000,
+ .ccc_offset = 300000,
+ .get_max_voltage = axp20x_battery_get_max_voltage,
+ .set_max_voltage = axp20x_battery_set_max_voltage,
+};
+
+static const struct axp_data axp221_data = {
+ .ccc_scale = 150000,
+ .ccc_offset = 300000,
+ .has_fg_valid = true,
+ .get_max_voltage = axp22x_battery_get_max_voltage,
+ .set_max_voltage = axp22x_battery_set_max_voltage,
+};
+
+static const struct axp_data axp813_data = {
+ .ccc_scale = 200000,
+ .ccc_offset = 200000,
+ .has_fg_valid = true,
+ .get_max_voltage = axp813_battery_get_max_voltage,
+ .set_max_voltage = axp20x_battery_set_max_voltage,
+};
+
static const struct of_device_id axp20x_battery_ps_id[] = {
{
.compatible = "x-powers,axp209-battery-power-supply",
- .data = (void *)AXP209_ID,
+ .data = (void *)&axp209_data,
}, {
.compatible = "x-powers,axp221-battery-power-supply",
- .data = (void *)AXP221_ID,
+ .data = (void *)&axp221_data,
+ }, {
+ .compatible = "x-powers,axp813-battery-power-supply",
+ .data = (void *)&axp813_data,
}, { /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, axp20x_battery_ps_id);
@@ -476,6 +549,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
struct axp20x_batt_ps *axp20x_batt;
struct power_supply_config psy_cfg = {};
struct power_supply_battery_info info;
+ struct device *dev = &pdev->dev;
if (!of_device_is_available(pdev->dev.of_node))
return -ENODEV;
@@ -516,7 +590,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
psy_cfg.drv_data = axp20x_batt;
psy_cfg.of_node = pdev->dev.of_node;
- axp20x_batt->axp_id = (uintptr_t)of_device_get_match_data(&pdev->dev);
+ axp20x_batt->data = (struct axp_data *)of_device_get_match_data(dev);
axp20x_batt->batt = devm_power_supply_register(&pdev->dev,
&axp20x_batt_ps_desc,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.