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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
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