LXR linux/arch/mips/vr41xx/common/giu.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  NEC VR4100 series GIU platform device.
   4 *
   5 *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
   6 */
   7#include <linux/errno.h>
   8#include <linux/init.h>
   9#include <linux/smp.h>
  10#include <linux/ioport.h>
  11#include <linux/platform_device.h>
  12
  13#include <asm/cpu.h>
  14#include <asm/vr41xx/giu.h>
  15#include <asm/vr41xx/irq.h>
  16
  17static struct resource giu_50pins_pullupdown_resource[] __initdata = {
  18        {
  19                .start  = 0x0b000100,
  20                .end    = 0x0b00011f,
  21                .flags  = IORESOURCE_MEM,
  22        },
  23        {
  24                .start  = 0x0b0002e0,
  25                .end    = 0x0b0002e3,
  26                .flags  = IORESOURCE_MEM,
  27        },
  28        {
  29                .start  = GIUINT_IRQ,
  30                .end    = GIUINT_IRQ,
  31                .flags  = IORESOURCE_IRQ,
  32        },
  33};
  34
  35static struct resource giu_36pins_resource[] __initdata = {
  36        {
  37                .start  = 0x0f000140,
  38                .end    = 0x0f00015f,
  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_48pins_resource[] __initdata = {
  49        {
  50                .start  = 0x0f000140,
  51                .end    = 0x0f000167,
  52                .flags  = IORESOURCE_MEM,
  53        },
  54        {
  55                .start  = GIUINT_IRQ,
  56                .end    = GIUINT_IRQ,
  57                .flags  = IORESOURCE_IRQ,
  58        },
  59};
  60
  61static int __init vr41xx_giu_add(void)
  62{
  63        struct platform_device *pdev;
  64        struct resource *res;
  65        unsigned int num;
  66        int retval;
  67
  68        pdev = platform_device_alloc("GIU", -1);
  69        if (!pdev)
  70                return -ENOMEM;
  71
  72        switch (current_cpu_type()) {
  73        case CPU_VR4111:
  74        case CPU_VR4121:
  75                pdev->id = GPIO_50PINS_PULLUPDOWN;
  76                res = giu_50pins_pullupdown_resource;
  77                num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
  78                break;
  79        case CPU_VR4122:
  80        case CPU_VR4131:
  81                pdev->id = GPIO_36PINS;
  82                res = giu_36pins_resource;
  83                num = ARRAY_SIZE(giu_36pins_resource);
  84                break;
  85        case CPU_VR4133:
  86                pdev->id = GPIO_48PINS_EDGE_SELECT;
  87                res = giu_48pins_resource;
  88                num = ARRAY_SIZE(giu_48pins_resource);
  89                break;
  90        default:
  91                retval = -ENODEV;
  92                goto err_free_device;
  93        }
  94
  95        retval = platform_device_add_resources(pdev, res, num);
  96        if (retval)
  97                goto err_free_device;
  98
  99        retval = platform_device_add(pdev);
 100        if (retval)
 101                goto err_free_device;
 102
 103        return 0;
 104
 105err_free_device:
 106        platform_device_put(pdev);
 107
 108        return retval;
 109}
 110device_initcall(vr41xx_giu_add);
 111