arch/mips/sgi-ip32/ip32-platform.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
   7  */
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/serial_8250.h>
  12
  13 #include <asm/ip32/mace.h>
  14 #include <asm/ip32/ip32_ints.h>
  15
  16 /*
  17  * .iobase isn't a constant (in the sense of C) so we fill it in at runtime.
  18  */
  19 #define MACE_PORT(int)                                                  \
  20 {                                                                       \
  21         .irq            = int,                                          \
  22         .uartclk        = 1843200,                                      \
  23         .iotype         = UPIO_MEM,                                     \
  24         .flags          = UPF_SKIP_TEST,                                \
  25         .regshift       = 8,                                            \
  26 }
  27
  28 static struct plat_serial8250_port uart8250_data[] = {
  29         MACE_PORT(MACEISA_SERIAL1_IRQ),
  30         MACE_PORT(MACEISA_SERIAL2_IRQ),
  31         { },
  32 };
  33
  34 static struct platform_device uart8250_device = {
  35         .name                   = "serial8250",
  36         .id                     = PLAT8250_DEV_PLATFORM,
  37         .dev                    = {
  38                 .platform_data  = uart8250_data,
  39         },
  40 };
  41
  42 static int __init uart8250_init(void)
  43 {
  44         uart8250_data[0].membase = (void __iomem *) &mace->isa.serial1;
  45         uart8250_data[1].membase = (void __iomem *) &mace->isa.serial1;
  46
  47         return platform_device_register(&uart8250_device);
  48 }
  49
  50 device_initcall(uart8250_init);
  51
  52 static __init int meth_devinit(void)
  53 {
  54         struct platform_device *pd;
  55         int ret;
  56
  57         pd = platform_device_alloc("meth", -1);
  58         if (!pd)
  59                 return -ENOMEM;
  60
  61         ret = platform_device_add(pd);
  62         if (ret)
  63                 platform_device_put(pd);
  64
  65         return ret;
  66 }
  67
  68 device_initcall(meth_devinit);
  69
  70 MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
  71 MODULE_LICENSE("GPL");
  72 MODULE_DESCRIPTION("8250 UART probe driver for SGI IP32 aka O2");