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power: supply: bq25890: Add Vsys regulator

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The chip is capable of reporting Vsys voltage supplied to the system.
Add regulator which represents the Vsys supply. This can be used e.g.
as a supply for system PMIC input.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Marek Vasut 2022-10-14 19:24:27 +02:00 committed by Sebastian Reichel
parent 85052e9000
commit 14a3d159ab
1 changed files with 32 additions and 0 deletions
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32
drivers/power/supply/bq25890_charger.c
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@ -1102,6 +1102,20 @@ static int bq25890_vbus_get_voltage(struct regulator_dev *rdev)
return bq25890_get_vbus_voltage(bq);
}
static int bq25890_vsys_get_voltage(struct regulator_dev *rdev)
{
struct bq25890_device *bq = rdev_get_drvdata(rdev);
int ret;
/* Should be some output voltage ? */
ret = bq25890_field_read(bq, F_SYSV); /* read measured value */
if (ret < 0)
return ret;
/* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
return 2304000 + ret * 20000;
}
static const struct regulator_ops bq25890_vbus_ops = {
.enable = bq25890_vbus_enable,
.disable = bq25890_vbus_disable,
@ -1117,6 +1131,18 @@ static const struct regulator_desc bq25890_vbus_desc = {
.ops = &bq25890_vbus_ops,
};
static const struct regulator_ops bq25890_vsys_ops = {
.get_voltage = bq25890_vsys_get_voltage,
};
static const struct regulator_desc bq25890_vsys_desc = {
.name = "vsys",
.of_match = "vsys",
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.ops = &bq25890_vsys_ops,
};
static int bq25890_register_regulator(struct bq25890_device *bq)
{
struct bq25890_platform_data *pdata = dev_get_platdata(bq->dev);
@ -1135,6 +1161,12 @@ static int bq25890_register_regulator(struct bq25890_device *bq)
"registering vbus regulator");
}
reg = devm_regulator_register(bq->dev, &bq25890_vsys_desc, &cfg);
if (IS_ERR(reg)) {
return dev_err_probe(bq->dev, PTR_ERR(reg),
"registering vsys regulator");
}
return 0;
}
#else