UARTDM_RF
unsigned int rf_reg = msm_port->is_uartdm ? UARTDM_RF : MSM_UART_RF;
slop = msm_read(port, UARTDM_RF);
slop = msm_read(port, UARTDM_RF);
conf.src_addr = base + UARTDM_RF;
ioread32_rep(port->membase + UARTDM_RF, buf, 1);