__ad5766_spi_write
ret = __ad5766_spi_write(st, AD5766_CMD_WR_DAC_REG(dac), data);
ret = __ad5766_spi_write(st, AD5766_CMD_SW_FULL_RESET,
ret = __ad5766_spi_write(st, AD5766_CMD_WR_PWR_DITHER,
ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_1, val);
ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_2, val);
ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_1, val);
ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_2, val);
ret = __ad5766_spi_write(st, AD5766_CMD_INV_DITHER, st->dither_invert);
return __ad5766_spi_write(st, AD5766_CMD_SPAN_REG, st->crt_range);
__ad5766_spi_write(st, AD5766_CMD_WR_IN_REG(ch), data[i++]);
__ad5766_spi_write(st, AD5766_CMD_SW_LDAC,