linux-kernel - [PATCH 3/3] serial: xilinx_uartps: set

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Date:   Mon, 25 Nov 2019 18:32:41 +0530
From:   shubhrajyoti.datta@...il.com
To:     linux-kernel@...r.kernel.org
Cc:     michal.simek@...inx.com, gregkh@...uxfoundation.org, arnd@...db.de,
        Maarten Brock <m.brock@...mierlo.com>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH 3/3] serial: xilinx_uartps: set_mctrl sets RTS and DTR

From: Maarten Brock <m.brock@...mierlo.com>

set_mctrl now sets RTS and DTR.

Signed-off-by: Maarten Brock <m.brock@...mierlo.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
 drivers/tty/serial/xilinx_uartps.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 44dabd4..019302e 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -1069,6 +1069,10 @@ 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
-- 
2.1.1