SNDCTL_DSP_GETFMTS
args->cmd = SNDCTL_DSP_GETFMTS;
case SNDCTL_DSP_GETFMTS: /* returns a mask of supported fmts */
#define SOUND_PCM_GETFMTS SNDCTL_DSP_GETFMTS
case SNDCTL_DSP_GETFMTS: