From aa85c604799790dcfbee6d15b7605321cbbdca04 Mon Sep 17 00:00:00 2001
From: Svyatoslav Ryhel <clamor95@gmail.com>
Date: Fri, 31 Jul 2026 14:30:07 +0300
Subject: [PATCH] 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.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20260731113007.145322-4-clamor95@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/hwmon/emc1403.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index 8b3173da2597..a0f8d29eb6c7 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);