LXR linux/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
  30static 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
  48static 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
  61static 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
  74static 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
 118err_free_device:
 119        platform_device_put(pdev);
 120
 121        return retval;
 122}
 123device_initcall(vr41xx_giu_add);
 124