WS16C48_ENAB
ret = regmap_write(ws16c48gpio->map, WS16C48_ENAB + index, ~mask_buf);
err = regmap_write(map, WS16C48_ENAB + 0, 0x00);
err = regmap_write(map, WS16C48_ENAB + 1, 0x00);
err = regmap_write(map, WS16C48_ENAB + 2, 0x00);
chip->mask_base = WS16C48_ENAB;