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Commit 786375f7 authored by Guenter Roeck's avatar Guenter Roeck Committed by Jean Delvare
Browse files

hwmon: (lm63) Add support for external temperature offset register 



LM63 and compatibles support a temperature offset register for the external
temperature sensor. Add support for it.

Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 662bda28

drivers/hwmon/lm63.c

+13 −3
Original line number Diff line number Diff line
@@ -180,9 +180,10 @@ struct lm63_data { 
	s8 temp8[3];	/* 0: local input

			   1: local high limit

			   2: remote critical limit */

	s16 temp11[3];	/* 0: remote input

	s16 temp11[4];	/* 0: remote input

			   1: remote low limit

			   2: remote high limit */

			   2: remote high limit

			   3: remote offset */

	u8 temp2_crit_hyst;

	u8 alarms;

};
@@ -318,11 +319,13 @@ static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr, 
static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,

			  const char *buf, size_t count)

{

	static const u8 reg[4] = {

	static const u8 reg[6] = {

		LM63_REG_REMOTE_LOW_MSB,

		LM63_REG_REMOTE_LOW_LSB,

		LM63_REG_REMOTE_HIGH_MSB,

		LM63_REG_REMOTE_HIGH_LSB,

		LM63_REG_REMOTE_OFFSET_MSB,

		LM63_REG_REMOTE_OFFSET_LSB,

	};



	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
@@ -418,6 +421,8 @@ static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11, 
	set_temp11, 1);

static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,

	set_temp11, 2);

static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,

	set_temp11, 3);

/*

 * On LM63, temp2_crit can be set only once, which should be job

 * of the bootloader.
@@ -445,6 +450,7 @@ static struct attribute *lm63_attributes[] = { 
	&sensor_dev_attr_temp2_min.dev_attr.attr,

	&sensor_dev_attr_temp1_max.dev_attr.attr,

	&sensor_dev_attr_temp2_max.dev_attr.attr,

	&sensor_dev_attr_temp2_offset.dev_attr.attr,

	&sensor_dev_attr_temp2_crit.dev_attr.attr,

	&dev_attr_temp2_crit_hyst.attr,
@@ -668,6 +674,10 @@ static struct lm63_data *lm63_update_device(struct device *dev) 
				  LM63_REG_REMOTE_HIGH_MSB) << 8)

				| i2c_smbus_read_byte_data(client,

				  LM63_REG_REMOTE_HIGH_LSB);

		data->temp11[3] = (i2c_smbus_read_byte_data(client,

				  LM63_REG_REMOTE_OFFSET_MSB) << 8)

				| i2c_smbus_read_byte_data(client,

				  LM63_REG_REMOTE_OFFSET_LSB);

		data->temp8[2] = i2c_smbus_read_byte_data(client,

				 LM63_REG_REMOTE_TCRIT);

		data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,