serial: microblaze: Move serial registration from serial_initialize()

Move the registration of xuartlite_serialN_device ports from
default serial_initialize() into driver specific function called from
serial_initialize(). This slims down the serial_initialize() call
to a bare tracker of all possible serial port registration routines
in U-Boot.

The newly implemented xuartlite_serial_initialize() function, which is
implemented inside of the serial_xuartlite driver allows encapsulation
of xuartlite_serialN_device within the serial_xuartlite driver itself.

Also, remove the exports of xuartlite_serialN_device from include/serial.h
as they are no longer needed. This is simply because the implementation of
default_serial_console() is wrapped into the serial_xuartlite driver and
the default console is picked by CONFIG_SERIAL<N> macro in config file.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Michal Simek <monstr@monstr.eu>

common/serial.c

@@ -45,6 +45,7 @@ serial_initfunc(pxa_serial_initialize);
 serial_initfunc(s3c24xx_serial_initialize);
 serial_initfunc(s5p_serial_initialize);
 serial_initfunc(zynq_serial_initalize);
+serial_initfunc(uartlite_serial_initialize);
 
 void serial_register(struct serial_device *dev)
 {
@@ -98,20 +99,7 @@ void serial_initialize(void)
 #if defined(CONFIG_SYS_BFIN_UART)
 	serial_register_bfin_uart();
 #endif
-#if defined(CONFIG_XILINX_UARTLITE)
-# ifdef XILINX_UARTLITE_BASEADDR
-	serial_register(&uartlite_serial0_device);
-# endif /* XILINX_UARTLITE_BASEADDR */
-# ifdef XILINX_UARTLITE_BASEADDR1
-	serial_register(&uartlite_serial1_device);
-# endif /* XILINX_UARTLITE_BASEADDR1 */
-# ifdef XILINX_UARTLITE_BASEADDR2
-	serial_register(&uartlite_serial2_device);
-# endif /* XILINX_UARTLITE_BASEADDR2 */
-# ifdef XILINX_UARTLITE_BASEADDR3
-	serial_register(&uartlite_serial3_device);
-# endif /* XILINX_UARTLITE_BASEADDR3 */
-#endif /* CONFIG_XILINX_UARTLITE */
+	uartlite_serial_initialize();
 	zynq_serial_initalize();
 	serial_assign(default_serial_console()->name);
 }

drivers/serial/serial_xuartlite.c

@@ -181,4 +181,20 @@ __weak struct serial_device *default_serial_console(void)
 
 	return NULL;
 }
+
+void uartlite_serial_initialize(void)
+{
+#ifdef XILINX_UARTLITE_BASEADDR
+	serial_register(&uartlite_serial0_device);
+#endif /* XILINX_UARTLITE_BASEADDR */
+#ifdef XILINX_UARTLITE_BASEADDR1
+	serial_register(&uartlite_serial1_device);
+#endif /* XILINX_UARTLITE_BASEADDR1 */
+#ifdef XILINX_UARTLITE_BASEADDR2
+	serial_register(&uartlite_serial2_device);
+#endif /* XILINX_UARTLITE_BASEADDR2 */
+#ifdef XILINX_UARTLITE_BASEADDR3
+	serial_register(&uartlite_serial3_device);
+#endif /* XILINX_UARTLITE_BASEADDR3 */
+}
 #endif /* CONFIG_SERIAL_MULTI */

include/serial.h

@@ -50,13 +50,6 @@ extern struct serial_device serial4_device;
 extern struct serial_device serial6_device;
 #endif
 
-#if defined(CONFIG_XILINX_UARTLITE)
-extern struct serial_device uartlite_serial0_device;
-extern struct serial_device uartlite_serial1_device;
-extern struct serial_device uartlite_serial2_device;
-extern struct serial_device uartlite_serial3_device;
-#endif
-
 #if defined(CONFIG_OMAP3_ZOOM2)
 extern struct serial_device zoom2_serial_device0;
 extern struct serial_device zoom2_serial_device1;