1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index d54dcd87c67e..047a7ba6796a 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -92,6 +92,18 @@ struct serial8250_config {
 #define SERIAL8250_SHARE_IRQS 0
 #endif
 
+#define SERIAL8250_PORT_FLAGS(_base, _irq, _flags)              \
+        {                                                       \
+                .iobase         = _base,                        \
+                .irq            = _irq,                         \
+                .uartclk        = 1843200,                      \
+                .iotype         = UPIO_PORT,                    \
+                .flags          = UPF_BOOT_AUTOCONF | (_flags), \
+        }
+
+#define SERIAL8250_PORT(_base, _irq) SERIAL8250_PORT_FLAGS(_base, _irq, 0)
+
+
 static inline int serial_in(struct uart_8250_port *up, int offset)
 {
         return up->port.serial_in(&up->port, offset);
@@ -117,6 +129,8 @@ static inline void serial_dl_write(struct uart_8250_port *up, int value)
 struct uart_8250_port *serial8250_get_port(int line);
 void serial8250_rpm_get(struct uart_8250_port *p);
 void serial8250_rpm_put(struct uart_8250_port *p);
+int serial8250_em485_init(struct uart_8250_port *p);
+void serial8250_em485_destroy(struct uart_8250_port *p);
 
 #if defined(__alpha__) && !defined(CONFIG_PCI)
 /*