le_mca_wrreg
le_mca_wrreg(lsc, val, RDATA | REGWRITE);
le_mca_wrreg(lsc, 0, RDATA | REGREAD);
static inline void le_mca_wrreg(struct le_mca_softc *, int, int);
le_mca_wrreg(sc, reg_number, RAP | REGWRITE)