[MIPS] Use platform_device for Cobalt UART

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 86 insertions, 20 deletions

diff --git a/arch/mips/cobalt/Makefile b/arch/mips/cobalt/Makefile
index 9565b2104dcd..444166651872 100644
--- a/arch/mips/cobalt/Makefile
+++ b/arch/mips/cobalt/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the Cobalt micro systems family specific parts of the kernel
 #
 
-obj-y    := irq.o reset.o setup.o buttons.o
+obj-y := buttons.o irq.o reset.o serial.o setup.o
 
 obj-$(CONFIG_PCI)               += pci.o
 obj-$(CONFIG_EARLY_PRINTK)      += console.o
diff --git a/arch/mips/cobalt/serial.c b/arch/mips/cobalt/serial.c
new file mode 100644
index 000000000000..c27116599a5f
--- /dev/null
+++ b/arch/mips/cobalt/serial.c
@@ -0,0 +1,85 @@
+/*
+ *  Registration of Cobalt UART platform device.
+ *
+ *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+
+#include <cobalt.h>
+
+static struct resource cobalt_uart_resource[] __initdata = {
+        {
+                .start  = 0x1c800000,
+                .end    = 0x1c800007,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = COBALT_SERIAL_IRQ,
+                .end    = COBALT_SERIAL_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct plat_serial8250_port cobalt_serial8250_port[] = {
+        {
+                .irq            = COBALT_SERIAL_IRQ,
+                .uartclk        = 18432000,
+                .iotype         = UPIO_MEM,
+                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+                .mapbase        = 0x1c800000,
+        },
+        {},
+};
+
+static __init int cobalt_uart_add(void)
+{
+        struct platform_device *pdev;
+        int retval;
+
+        /*
+         * Cobalt Qube1 and RAQ1 have no UART.
+         */
+        if (cobalt_board_id <= COBALT_BRD_ID_RAQ1)
+                return 0;
+
+        pdev = platform_device_alloc("serial8250", -1);
+        if (!pdev)
+                return -ENOMEM;
+
+        pdev->id = PLAT8250_DEV_PLATFORM;
+        pdev->dev.platform_data = cobalt_serial8250_port;
+
+        retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
+        if (retval)
+                goto err_free_device;
+
+        retval = platform_device_add(pdev);
+        if (retval)
+                goto err_free_device;
+
+        return 0;
+
+err_free_device:
+        platform_device_put(pdev);
+
+        return retval;
+}
+device_initcall(cobalt_uart_add);
diff --git a/arch/mips/cobalt/setup.c b/arch/mips/cobalt/setup.c
index d0dd81790f74..e2f53abfb440 100644
--- a/arch/mips/cobalt/setup.c
+++ b/arch/mips/cobalt/setup.c
@@ -13,8 +13,6 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <linux/pm.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
 
 #include <asm/bootinfo.h>
 #include <asm/time.h>
@@ -27,7 +25,6 @@
 extern void cobalt_machine_restart(char *command);
 extern void cobalt_machine_halt(void);
 extern void cobalt_machine_power_off(void);
-extern void cobalt_early_console(void);
 
 int cobalt_board_id;
 
@@ -95,7 +92,6 @@ static struct resource cobalt_reserved_resources[] = {
 
 void __init plat_mem_setup(void)
 {
-        static struct uart_port uart;
         unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
         int i;
 
@@ -119,21 +115,6 @@ void __init plat_mem_setup(void)
         cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
 
         printk("Cobalt board ID: %d\n", cobalt_board_id);
-
-        if (cobalt_board_id > COBALT_BRD_ID_RAQ1) {
-#ifdef CONFIG_SERIAL_8250
-                uart.line       = 0;
-                uart.type       = PORT_UNKNOWN;
-                uart.uartclk    = 18432000;
-                uart.irq        = COBALT_SERIAL_IRQ;
-                uart.flags      = UPF_IOREMAP | UPF_BOOT_AUTOCONF |
-                                  UPF_SKIP_TEST;
-                uart.iotype     = UPIO_MEM;
-                uart.mapbase    = 0x1c800000;
-
-                early_serial_setup(&uart);
-#endif
-        }
 }
 
 /*