ULITE_STATUS
stat = uart_in32(ULITE_STATUS, port);
ret = uart_in32(ULITE_STATUS, port);
ulite_transmit(port, uart_in32(ULITE_STATUS, port));
ret = uart_in32(ULITE_STATUS, port);
if (!(uart_in32(ULITE_STATUS, port) & ULITE_STATUS_RXVALID))
while (uart_in32(ULITE_STATUS, port) & ULITE_STATUS_TXFULL)
0, 1000000, false, ULITE_STATUS, port))
ier = uart_in32(ULITE_STATUS, port) & ULITE_STATUS_IE;
(readl(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL))