[PATCH v1 2/2] hwmon: ina2xx: add optional regulator support

[Svyatoslav Ryhel]

Some devices may need a specific supply provided
for this sensor to work properly, like p895 does.

Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
---
 drivers/hwmon/ina2xx.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index 00fc70305a89..4a3e2b1bbe8b 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -119,6 +119,7 @@ struct ina2xx_data {
 	long power_lsb_uW;
 	struct mutex config_lock;
 	struct regmap *regmap;
+	struct regulator *vdd_supply;
 
 	const struct attribute_group *groups[INA2XX_MAX_ATTRIBUTE_GROUPS];
 };
@@ -656,6 +657,17 @@ static int ina2xx_probe(struct i2c_client *client)
 		return PTR_ERR(data->regmap);
 	}
 
+	data->vdd_supply = devm_regulator_get_optional(dev, "vdd");
+	if (IS_ERR(data->vdd_supply))
+		return dev_err_probe(dev, PTR_ERR(data->vdd_supply),
+				     "failed to get vdd regulator\n");
+
+	ret = regulator_enable(data->vdd_supply);
+	if (ret < 0) {
+		dev_err(dev, "failed to enable vdd power supply\n");
+		return ret;
+	}
+
 	ret = ina2xx_init(data);
 	if (ret < 0) {
 		dev_err(dev, "error configuring the device: %d\n", ret);
-- 
2.37.2