From 5374be6a8f2644e33e436b1864188442e1b2c156 Mon Sep 17 00:00:00 2001 From: Sergey Lapin Date: Fri, 4 Jul 2008 01:53:23 +0400 Subject: [PATCH] RS-485 mode of USART1 Signed-off-by: Sergey Lapin --- 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