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From 5374be6a8f2644e33e436b1864188442e1b2c156 Mon Sep 17 00:00:00 2001
From: Sergey Lapin <slapin@ossfans.org>
Date: Fri, 4 Jul 2008 01:53:23 +0400
Subject: [PATCH] RS-485 mode of USART1

Signed-off-by: Sergey Lapin <slapin@ossfans.org>
---
 drivers/serial/atmel_serial.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 1fee12c..20ced47 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -233,8 +233,12 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
 	mode = UART_GET_MR(port) & ~ATMEL_US_CHMODE;
 	if (mctrl & TIOCM_LOOP)
 		mode |= ATMEL_US_CHMODE_LOC_LOOP;
-	else
+	else {
+		if (port->mapbase == AT91SAM9260_BASE_US1)
+			mode |= ATMEL_US_USMODE_RS485;
+
 		mode |= ATMEL_US_CHMODE_NORMAL;
+	}
 	UART_PUT_MR(port, mode);
 }
 
@@ -1094,6 +1098,9 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 	/* disable receiver and transmitter */
 	UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS);
 
+	if (port->mapbase == AT91SAM9260_BASE_US1) 
+		mode |= ATMEL_US_USMODE_RS485;
+
 	/* set the parity, stop bits and data size */
 	UART_PUT_MR(port, mode);
 
-- 
1.5.4.1