DX_ACR2_AC97_COM_STAT
outl(0x00000001, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
outl(0x00000000, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
outl(trident->ac97_ctrl, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
if ((inl(TRID_REG(trident, DX_ACR2_AC97_COM_STAT)) & 0x0010) != 0)