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
  17 static 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
  35 static 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
  48 static 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
  61 static 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
 105 err_free_device:
 106         platform_device_put(pdev);
 107
 108         return retval;
 109 }
 110 device_initcall(vr41xx_giu_add);