linux-kernel - [PATCH v3] drivers: hwmon: max31827: handle vref regulator

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Date:   Mon, 25 Sep 2023 11:23:33 +0300
From:   Antoniu Miclaus <antoniu.miclaus@...log.com>
To:     Daniel Matyas <daniel.matyas@...log.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH v3] drivers: hwmon: max31827: handle vref regulator

Add missing implementation for the max31827 supply regulator.
This is a hardware required property that is not handled.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
changes in v3:
 - revert also the dev_err_probe output to use "vref" instead of "vdd".
 drivers/hwmon/max31827.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/hwmon/max31827.c b/drivers/hwmon/max31827.c
index 602f4e4f81ff..2a61fb9a408a 100644
--- a/drivers/hwmon/max31827.c
+++ b/drivers/hwmon/max31827.c
@@ -427,6 +427,11 @@ static int max31827_probe(struct i2c_client *client)
 		return dev_err_probe(dev, PTR_ERR(st->regmap),
 				     "Failed to allocate regmap.\n");
 
+	err = devm_regulator_get_enable(dev, "vref");
+	if (err)
+		return dev_err_probe(dev, err,
+				     "failed to enable vref regulator\n");
+
 	err = max31827_init_client(st);
 	if (err)
 		return err;
-- 
2.42.0