arch/mips/vr41xx/common/giu.c

   1 /*
   2  *  NEC VR4100 series GIU platform device.
   3  *
   4  *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20 #include <linux/errno.h>
  21 #include <linux/init.h>
  22 #include <linux/smp.h>
  23 #include <linux/ioport.h>
  24 #include <linux/platform_device.h>
  25
  26 #include <asm/cpu.h>
  27 #include <asm/vr41xx/giu.h>
  28 #include <asm/vr41xx/irq.h>
  29
  30 static struct resource giu_50pins_pullupdown_resource[] __initdata = {
  31         {
  32                 .start  = 0x0b000100,
  33                 .end    = 0x0b00011f,
  34                 .flags  = IORESOURCE_MEM,
  35         },
  36         {
  37                 .start  = 0x0b0002e0,
  38                 .end    = 0x0b0002e3,
  39                 .flags  = IORESOURCE_MEM,
  40         },
  41         {
  42                 .start  = GIUINT_IRQ,
  43                 .end    = GIUINT_IRQ,
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct resource giu_36pins_resource[] __initdata = {
  49         {
  50                 .start  = 0x0f000140,
  51                 .end    = 0x0f00015f,
  52                 .flags  = IORESOURCE_MEM,
  53         },
  54         {
  55                 .start  = GIUINT_IRQ,
  56                 .end    = GIUINT_IRQ,
  57                 .flags  = IORESOURCE_IRQ,
  58         },
  59 };
  60
  61 static struct resource giu_48pins_resource[] __initdata = {
  62         {
  63                 .start  = 0x0f000140,
  64                 .end    = 0x0f000167,
  65                 .flags  = IORESOURCE_MEM,
  66         },
  67         {
  68                 .start  = GIUINT_IRQ,
  69                 .end    = GIUINT_IRQ,
  70                 .flags  = IORESOURCE_IRQ,
  71         },
  72 };
  73
  74 static int __init vr41xx_giu_add(void)
  75 {
  76         struct platform_device *pdev;
  77         struct resource *res;
  78         unsigned int num;
  79         int retval;
  80
  81         pdev = platform_device_alloc("GIU", -1);
  82         if (!pdev)
  83                 return -ENOMEM;
  84
  85         switch (current_cpu_type()) {
  86         case CPU_VR4111:
  87         case CPU_VR4121:
  88                 pdev->id = GPIO_50PINS_PULLUPDOWN;
  89                 res = giu_50pins_pullupdown_resource;
  90                 num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
  91                 break;
  92         case CPU_VR4122:
  93         case CPU_VR4131:
  94                 pdev->id = GPIO_36PINS;
  95                 res = giu_36pins_resource;
  96                 num = ARRAY_SIZE(giu_36pins_resource);
  97                 break;
  98         case CPU_VR4133:
  99                 pdev->id = GPIO_48PINS_EDGE_SELECT;
 100                 res = giu_48pins_resource;
 101                 num = ARRAY_SIZE(giu_48pins_resource);
 102                 break;
 103         default:
 104                 retval = -ENODEV;
 105                 goto err_free_device;
 106         }
 107
 108         retval = platform_device_add_resources(pdev, res, num);
 109         if (retval)
 110                 goto err_free_device;
 111
 112         retval = platform_device_add(pdev);
 113         if (retval)
 114                 goto err_free_device;
 115
 116         return 0;
 117
 118 err_free_device:
 119         platform_device_put(pdev);
 120
 121         return retval;
 122 }
 123 device_initcall(vr41xx_giu_add);