atmel_serial: fix RTS high after initialization in RS485 mode

5dfbd1d7 · Claudio Scordino <[email protected]> · 2011-01-13 15:45:39 -08:00

When working in RS485 mode, the atmel_serial driver keeps RTS high after
the initialization of the serial port.  It goes low only after the first
character has been sent.

[[email protected]: simplify code]
Signed-off-by: Claudio Scordino <[email protected]>
Signed-off-by: Arkadiusz Bubala <[email protected]>
Tested-by: Arkadiusz Bubala <[email protected]>
Cc: Nicolas Ferre <[email protected]>
Cc: Greg KH <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 5dfbd1d734ef5415bc47b034df7433ba21e40e7b
Parents: 6c9ae009

Changes

1 files changed · +5 −0

File	Status	Add	Del	Content
drivers/serial/atmel_serial.c	modified	+5	−0	View file

drivers/serial/atmel_serial.c

View file

diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 3892666..2a1d52f 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -1732,6 +1732,11 @@ static int __devinit atmel_serial_probe(struct platform_device *pdev)
 	device_init_wakeup(&pdev->dev, 1);
 	platform_set_drvdata(pdev, port);
 
+	if (port->rs485.flags & SER_RS485_ENABLED) {
+		UART_PUT_MR(&port->uart, ATMEL_US_USMODE_NORMAL);
+		UART_PUT_CR(&port->uart, ATMEL_US_RTSEN);
+	}
+
 	return 0;
 
 err_add_port: