snd_dg00x_stream_start_duplex
err = snd_dg00x_stream_start_duplex(dg00x);
err = snd_dg00x_stream_start_duplex(dg00x);
err = snd_dg00x_stream_start_duplex(dg00x);
int snd_dg00x_stream_start_duplex(struct snd_dg00x *dg00x);