snd_es1938_bits
return snd_es1938_bits(chip, reg, mask, val);
snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));