BCM4377_XFER_RING_SCO_H2D
bcm4377->sco_ack_ring.transfer_rings = BIT(BCM4377_XFER_RING_SCO_H2D);
bcm4377->sco_h2d_ring.ring_id = BCM4377_XFER_RING_SCO_H2D;
case BCM4377_XFER_RING_SCO_H2D: