LCR_DLAB
#define CFCR_DLAB LCR_DLAB
bus_write_1(bar->b_res, REG_LCR, LCR_DLAB);
uart_setreg(bas, REG_LCR, lcr | LCR_DLAB);
uart_setreg(bas, REG_LCR, lcr | LCR_DLAB);
if ((sc->lcr & LCR_DLAB) != 0) {
if ((sc->lcr & LCR_DLAB) != 0) {