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path: root/drivers/hwmon/emc1403.c
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Diffstat (limited to 'drivers/hwmon/emc1403.c')
-rw-r--r--drivers/hwmon/emc1403.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index 0e4b5642638d..5b58b20dead1 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -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
};