adt7470_read_word_data
err = adt7470_read_word_data(data, ADT7470_REG_FAN(i), &val);
err = adt7470_read_word_data(data, ADT7470_REG_ALARM1_MASK, &val);
err = adt7470_read_word_data(data, ADT7470_REG_FAN_MIN(i), &val);
err = adt7470_read_word_data(data, ADT7470_REG_FAN_MAX(i), &val);