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 #define MACEISA_SERIAL1_OFFS   offsetof(struct sgi_mace, isa.serial1)
  17 #define MACEISA_SERIAL2_OFFS   offsetof(struct sgi_mace, isa.serial2)
  18
  19 #define MACE_PORT(offset,_irq)                                          \
  20 {                                                                       \
  21         .mapbase        = MACE_BASE + offset,                           \
  22         .irq            = _irq,                                         \
  23         .uartclk        = 1843200,                                      \
  24         .iotype         = UPIO_MEM,                                     \
  25         .flags          = UPF_SKIP_TEST|UPF_IOREMAP,                    \
  26         .regshift       = 8,                                            \
  27 }
  28
  29 static struct plat_serial8250_port uart8250_data[] = {
  30         MACE_PORT(MACEISA_SERIAL1_OFFS, MACEISA_SERIAL1_IRQ),
  31         MACE_PORT(MACEISA_SERIAL2_OFFS, MACEISA_SERIAL2_IRQ),
  32         { },
  33 };
  34
  35 static struct platform_device uart8250_device = {
  36         .name                   = "serial8250",
  37         .id                     = PLAT8250_DEV_PLATFORM,
  38         .dev                    = {
  39                 .platform_data  = uart8250_data,
  40         },
  41 };
  42
  43 static int __init uart8250_init(void)
  44 {
  45         return platform_device_register(&uart8250_device);
  46 }
  47
  48 device_initcall(uart8250_init);
  49
  50 static __init int meth_devinit(void)
  51 {
  52         struct platform_device *pd;
  53         int ret;
  54
  55         pd = platform_device_alloc("meth", -1);
  56         if (!pd)
  57                 return -ENOMEM;
  58
  59         ret = platform_device_add(pd);
  60         if (ret)
  61                 platform_device_put(pd);
  62
  63         return ret;
  64 }
  65
  66 device_initcall(meth_devinit);
  67
  68 MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
  69 MODULE_LICENSE("GPL");
  70 MODULE_DESCRIPTION("8250 UART probe driver for SGI IP32 aka O2");