ADM1031_REG_FAN_FILTER
read_val = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
reg = adm1031_read_value(client, ADM1031_REG_FAN_FILTER);
adm1031_write_value(client, ADM1031_REG_FAN_FILTER, reg);