SC16IS7XX_IER_RDI_BIT
val = SC16IS7XX_IER_RDI_BIT | SC16IS7XX_IER_CTSI_BIT |
sc16is7xx_ier_clear(port, SC16IS7XX_IER_RDI_BIT);
sc16is7xx_ier_clear(port, SC16IS7XX_IER_RDI_BIT);
sc16is7xx_ier_set(port, SC16IS7XX_IER_RDI_BIT);