A_BCM1480_DUART_CTRLREG
(A_BCM1480_DUART_CTRLREG((chan), R_BCM1480_DUART_IMRREG(chan)))
(A_BCM1480_DUART_CTRLREG((chan), R_BCM1480_DUART_ISRREG(chan)))
(A_BCM1480_DUART_CTRLREG((chan), R_DUART_IN_PORT))
#define SBD_CTRLREGS(line) A_BCM1480_DUART_CTRLREG((line), 0)