+static ssize_t show_num_temp_sensors(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct adt7470_data *data = adt7470_update_device(dev);
+ return sprintf(buf, "%d\n", data->num_temp_sensors);
+}
+
+static ssize_t set_num_temp_sensors(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf,
+ size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adt7470_data *data = i2c_get_clientdata(client);
+ long temp;
+
+ if (strict_strtol(buf, 10, &temp))
+ return -EINVAL;
+
+ temp = SENSORS_LIMIT(temp, -1, 10);
+
+ mutex_lock(&data->lock);
+ data->num_temp_sensors = temp;
+ mutex_unlock(&data->lock);
+
+ return count;
+}
+