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Commit 960f12f4 authored by Alan Cox's avatar Alan Cox Committed by Jean Delvare
Browse files

hwmon: (emc1403) Add power support 



Add back the power interface we lost due to a slight misunderstanding of
the maintainers wishes.

Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 5950ec8d

drivers/hwmon/emc1403.c

+33 −0
Original line number Diff line number Diff line
@@ -89,6 +89,35 @@ static ssize_t store_temp(struct device *dev, 
	return count;

}



static ssize_t store_bit(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct thermal_data *data = i2c_get_clientdata(client);

	struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr);

	unsigned long val;

	int retval;



	if (strict_strtoul(buf, 10, &val))

		return -EINVAL;



	mutex_lock(&data->mutex);

	retval = i2c_smbus_read_byte_data(client, sda->nr);

	if (retval < 0)

		goto fail;



	retval &= ~sda->index;

	if (val)

		retval |= sda->index;



	retval = i2c_smbus_write_byte_data(client, sda->index, retval);

	if (retval == 0)

		retval = count;

fail:

	mutex_unlock(&data->mutex);

	return retval;

}



static ssize_t show_hyst(struct device *dev,

			struct device_attribute *attr, char *buf)

{
@@ -200,6 +229,9 @@ static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO, 
static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR,

	show_hyst, store_hyst, 0x1A);



static SENSOR_DEVICE_ATTR_2(power_state, S_IRUGO | S_IWUSR,

	show_bit, store_bit, 0x03, 0x40);



static struct attribute *mid_att_thermal[] = {

	&sensor_dev_attr_temp1_min.dev_attr.attr,

	&sensor_dev_attr_temp1_max.dev_attr.attr,
@@ -225,6 +257,7 @@ static struct attribute *mid_att_thermal[] = { 
	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,

	&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,

	&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,

	&sensor_dev_attr_power_state.dev_attr.attr,

	NULL

};