diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index a182def7007d2c678b1712b9f7ca78fdc80042ca..3892666b5fbdf4cfe36e66f1a6092c7666afd2be 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -217,7 +217,8 @@ void atmel_config_rs485(struct uart_port *port, struct serial_rs485 *rs485conf)
 	if (rs485conf->flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
 		atmel_port->tx_done_mask = ATMEL_US_TXEMPTY;
-		UART_PUT_TTGR(port, rs485conf->delay_rts_before_send);
+		if (rs485conf->flags & SER_RS485_RTS_AFTER_SEND)
+			UART_PUT_TTGR(port, rs485conf->delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -292,7 +293,9 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_before_send);
+		if (atmel_port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
+			UART_PUT_TTGR(port,
+					atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
@@ -1211,7 +1214,9 @@ static void atmel_set_termios(struct uart_port *port, struct ktermios *termios,
 
 	if (atmel_port->rs485.flags & SER_RS485_ENABLED) {
 		dev_dbg(port->dev, "Setting UART to RS485\n");
-		UART_PUT_TTGR(port, atmel_port->rs485.delay_rts_before_send);
+		if (atmel_port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
+			UART_PUT_TTGR(port,
+					atmel_port->rs485.delay_rts_after_send);
 		mode |= ATMEL_US_USMODE_RS485;
 	} else {
 		dev_dbg(port->dev, "Setting UART to RS232\n");
diff --git a/include/linux/serial.h b/include/linux/serial.h
index c3b45add494dce24d5473d4f0c4346d3b7e52928..ef914061511ec833c706a38ddf47cac8ad52d93a 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -210,8 +210,10 @@ struct serial_rs485 {
 #define SER_RS485_ENABLED		(1 << 0)
 #define SER_RS485_RTS_ON_SEND		(1 << 1)
 #define SER_RS485_RTS_AFTER_SEND	(1 << 2)
+#define SER_RS485_RTS_BEFORE_SEND	(1 << 3)
 	__u32	delay_rts_before_send;	/* Milliseconds */
-	__u32	padding[6];		/* Memory is cheap, new structs
+	__u32	delay_rts_after_send;	/* Milliseconds */
+	__u32	padding[5];		/* Memory is cheap, new structs
 					   are a royal PITA .. */
 };