DAC1
snd_es18xx_rate_set(chip, substream, DAC1);
if (chip->active & DAC1)
chip->active |= DAC1;
if (!(chip->active & DAC1))
chip->active &= ~DAC1;
else if (chip->active & DAC1)
if (!(chip->active & DAC1))
else if (chip->active & DAC1)
chip->active |= DAC1;
chip->active &= ~DAC1;
snd_es1938_rate_set(chip, substream, DAC1);