VIA_AC97_CONTROL
if ((via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_BUSY) == 0)
if (via_rd(via, VIA_AC97_CONTROL, 4) & VIA_AC97_CODEC00_VALID)
via_wr(via, VIA_AC97_CONTROL,
via_wr(via, VIA_AC97_CONTROL, VIA_AC97_CODEC00_VALID |
return (via_rd(via, VIA_AC97_CONTROL, 2));