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Commit b53893aa authored by Michael Walle's avatar Michael Walle Committed by Guenter Roeck
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hwmon: (adt7411) set bit 3 in CFG1 register 



According to the datasheet you should only write 1 to this bit. If it is
not set, at least AIN3 will return bad values on newer silicon revisions.

Fixes: d84ca5b3 ("hwmon: Add driver for ADT7411 voltage and temperature sensor")
Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 08426eda

drivers/hwmon/adt7411.c

+4 −1
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 


#define ADT7411_REG_CFG1			0x18

#define ADT7411_CFG1_START_MONITOR		(1 << 0)

#define ADT7411_CFG1_RESERVED_BIT3		(1 << 3)



#define ADT7411_REG_CFG2			0x19

#define ADT7411_CFG2_DISABLE_AVG		(1 << 5)
@@ -296,8 +297,10 @@ static int adt7411_probe(struct i2c_client *client, 
	mutex_init(&data->device_lock);

	mutex_init(&data->update_lock);



	/* According to the datasheet, we must only write 1 to bit 3 */

	ret = adt7411_modify_bit(client, ADT7411_REG_CFG1,

				 ADT7411_CFG1_START_MONITOR, 1);

				 ADT7411_CFG1_RESERVED_BIT3

				 | ADT7411_CFG1_START_MONITOR, 1);

	if (ret < 0)

		return ret;