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
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+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,