CDNS_UART_IXR_TXEMPTY
port->read_status_mask = CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_RXTRIG |
writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_IDR);
writel(CDNS_UART_IXR_TXEMPTY, cdns_uart->port->membase + CDNS_UART_IER);
if (isrstatus & CDNS_UART_IXR_TXEMPTY) {
isrstatus &= ~CDNS_UART_IXR_TXEMPTY;
writel(CDNS_UART_IXR_TXEMPTY, port->membase + CDNS_UART_ISR);
port->read_status_mask = CDNS_UART_IXR_TXEMPTY | CDNS_UART_IXR_RXTRIG |