Function _uart_configure

bsp/allwinner/libraries/drivers/drv_uart.c:581–596

* UART interface */

 * UART interface
 */
static rt_err_t _uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
    struct sunxi_uart *uart;

    RT_ASSERT(serial != RT_NULL);

    serial->config = *cfg;
    uart = serial->parent.user_data;

    uart_set_format(uart->uart_port, cfg->data_bits, cfg->stop_bits, cfg->parity);
    uart_set_baudrate(uart->uart_port, cfg->baud_rate);
    uart_set_fifo(uart->uart_port);
    uart_forcechange(uart->uart_port);

    return RT_EOK;
}

static rt_err_t _uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{