[PATCH v4 3/3] hwmon: (emc1403) Add regulator support

Add support for VDD power supply for this sensor. It is required on some
devices for the sensor to start up and work properly.

Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Svyatoslav Ryhel <[email protected]>
---
 drivers/hwmon/emc1403.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index 8b3173da25973..a0f8d29eb6c76 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -18,6 +18,7 @@
 #include <linux/err.h>
 #include <linux/sysfs.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/util_macros.h>
 
 #define THERMAL_PID_REG		0xfd
@@ -659,6 +660,12 @@ static int emc1403_probe(struct i2c_client *client)
 {
 	struct thermal_data *data;
 	struct device *hwmon_dev;
+	int ret;
+
+	ret = devm_regulator_get_enable(&client->dev, "vdd");
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "Failed to enable regulator\n");
 
 	data = devm_kzalloc(&client->dev, sizeof(struct thermal_data),
 			    GFP_KERNEL);
-- 
2.53.0