[MIPS] Add back support for LASAT platforms

Signed-off-by: Brian Murphy <brian@murphy.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/arch/mips/lasat/serial.c b/arch/mips/lasat/serial.c
new file mode 100644
index 000000000000..205bd397d75b
--- /dev/null
+++ b/arch/mips/lasat/serial.c
@@ -0,0 +1,94 @@
+/*
+ *  Registration of Lasat UART platform device.
+ *
+ *  Copyright (C) 2007  Brian Murphy <brian@murphy.dk>
+ *
+ *  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 St, 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 <asm/bootinfo.h>
+#include <asm/lasat/lasat.h>
+#include <asm/lasat/serial.h>
+
+static struct resource lasat_serial_res[2] __initdata;
+
+static struct plat_serial8250_port lasat_serial8250_port[] = {
+        {
+                .iotype         = UPIO_MEM,
+                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF |
+                                  UPF_SKIP_TEST,
+        },
+        {},
+};
+
+static __init int lasat_uart_add(void)
+{
+        struct platform_device *pdev;
+        int retval;
+
+        pdev = platform_device_alloc("serial8250", -1);
+        if (!pdev)
+                return -ENOMEM;
+
+        if (mips_machtype == MACH_LASAT_100) {
+                lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_100);
+                lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_100 * 8 - 1;
+                lasat_serial_res[0].flags = IORESOURCE_MEM;
+                lasat_serial_res[1].start = LASATINT_UART_100;
+                lasat_serial_res[1].end = LASATINT_UART_100;
+                lasat_serial_res[1].flags = IORESOURCE_IRQ;
+
+                lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_100;
+                lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_100 * 16;
+                lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_100;
+                lasat_serial8250_port[0].irq = LASATINT_UART_100;
+        } else {
+                lasat_serial_res[0].start = KSEG1ADDR(LASAT_UART_REGS_BASE_200);
+                lasat_serial_res[0].end = lasat_serial_res[0].start + LASAT_UART_REGS_SHIFT_200 * 8 - 1;
+                lasat_serial_res[0].flags = IORESOURCE_MEM;
+                lasat_serial_res[1].start = LASATINT_UART_200;
+                lasat_serial_res[1].end = LASATINT_UART_200;
+                lasat_serial_res[1].flags = IORESOURCE_IRQ;
+
+                lasat_serial8250_port[0].mapbase = LASAT_UART_REGS_BASE_200;
+                lasat_serial8250_port[0].uartclk = LASAT_BASE_BAUD_200 * 16;
+                lasat_serial8250_port[0].regshift = LASAT_UART_REGS_SHIFT_200;
+                lasat_serial8250_port[0].irq = LASATINT_UART_200;
+        }
+
+        pdev->id = PLAT8250_DEV_PLATFORM;
+        pdev->dev.platform_data = lasat_serial8250_port;
+
+        retval = platform_device_add_resources(pdev, lasat_serial_res, ARRAY_SIZE(lasat_serial_res));
+        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(lasat_uart_add);