CONTROL_SPDIF_PCM
[CONTROL_SPDIF_PCM] =
chip->controls[CONTROL_SPDIF_PCM]->vd[0].access &=
&chip->controls[CONTROL_SPDIF_PCM]->id);
chip->controls[CONTROL_SPDIF_PCM]->vd[0].access |=
&chip->controls[CONTROL_SPDIF_PCM]->id);