From: Bich HEMON <bich.hemon@st.com>
Date: Thu, 13 Jul 2017 15:08:28 +0000 (+0000)
Subject: serial: stm32: add RTS support
X-Git-Tag: v5.15~10535^2~89
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=35abe98f15ed60d252f79da6e41b477527af8b2f;p=platform%2Fkernel%2Flinux-starfive.git

serial: stm32: add RTS support

Implement support of RTS in USART control register

Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index a12d79c..2fca2d2 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -518,7 +518,7 @@ static void stm32_set_termios(struct uart_port *port, struct ktermios *termios,
 	port->status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS);
 	if (cflag & CRTSCTS) {
 		port->status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS;
-		cr3 |= USART_CR3_CTSE;
+		cr3 |= USART_CR3_CTSE | USART_CR3_RTSE;
 	}
 
 	usartdiv = DIV_ROUND_CLOSEST(port->uartclk, baud);