atmel_serial: fix RTS high after initialization in RS485 mode
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]>
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 @@
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:
