s3c2440_i2s_alloc
int s3c2440_i2s_alloc(void *, int, size_t, int, s3c2440_i2s_buf_t *);
s3c2440_i2s_alloc(sc->sc_i2s_handle, direction, size, 0x00, &sc->sc_play_buf);
s3c2440_i2s_alloc(sc->sc_i2s_handle, direction, size, 0x00, &sc->sc_rec_buf);