[PATCH v4 2/2] hwmon: (lm90) enable extended range according to DTS node

From: Holger Brunck <holger.brunck@hitachienergy.com>
To: linux-hwmon@vger.kernel.org
Cc: Jean Delvare <jdelvare@suse.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Holger Brunck <holger.brunck@hitachienergy.com>
Subject: [PATCH v4 2/2] hwmon: (lm90) enable extended range according to DTS node
Date: Tue, 17 May 2022 15:56:14 +0200	[thread overview]
Message-ID: <20220517135614.8185-2-holger.brunck@hitachienergy.com> (raw)
In-Reply-To: <20220517135614.8185-1-holger.brunck@hitachienergy.com>

Some lm90 compatible devices can operate in an extended temperature mode.
This feature is now enabled if the property is set in the corresponding
device tree node.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
changes ofr v4: 
  - add reviewd-by tag

 drivers/hwmon/lm90.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 1c9493c70813..3820f0e61510 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -1707,6 +1707,7 @@ static void lm90_restore_conf(void *_data)
 
 static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
 {
+	struct device_node *np = client->dev.of_node;
 	int config, convrate;
 
 	convrate = lm90_read_reg(client, LM90_REG_R_CONVRATE);
@@ -1727,6 +1728,9 @@ static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
 
 	/* Check Temperature Range Select */
 	if (data->flags & LM90_HAVE_EXTENDED_TEMP) {
+		if (of_property_read_bool(np, "ti,extended-range-enable"))
+			config |= 0x04;
+
 		if (config & 0x04)
 			data->flags |= LM90_FLAG_ADT7461_EXT;
 	}
-- 
2.34.1

