serial: xilinx_uartps: set_mctrl sets RTS and DTR

set_mctrl now sets RTS and DTR.

Signed-off-by: Maarten Brock <m.brock@vanmierlo.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/1574687731-21563-3-git-send-email-shubhrajyoti.datta@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 958c3b4..98db9dc 100644 (file)
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1055,6 +1055,10 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
        val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR);
        mode_reg &= ~CDNS_UART_MR_CHMODE_MASK;
 
+       if (mctrl & TIOCM_RTS)
+               val |= CDNS_UART_MODEMCR_RTS;
+       if (mctrl & TIOCM_DTR)
+               val |= CDNS_UART_MODEMCR_DTR;
        if (mctrl & TIOCM_LOOP)
                mode_reg |= CDNS_UART_MR_CHMODE_L_LOOP;
        else