arch/arm/mach-omap2/omap3-iommu.c

   1 /*
   2  * omap iommu: omap3 device registration
   3  *
   4  * Copyright (C) 2008-2009 Nokia Corporation
   5  *
   6  * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/platform_device.h>
  14
  15 #include <plat/iommu.h>
  16
  17 #define OMAP3_MMU1_BASE 0x480bd400
  18 #define OMAP3_MMU2_BASE 0x5d000000
  19 #define OMAP3_MMU1_IRQ  24
  20 #define OMAP3_MMU2_IRQ  28
  21
  22
  23 static unsigned long iommu_base[] __initdata = {
  24         OMAP3_MMU1_BASE,
  25         OMAP3_MMU2_BASE,
  26 };
  27
  28 static int iommu_irq[] __initdata = {
  29         OMAP3_MMU1_IRQ,
  30         OMAP3_MMU2_IRQ,
  31 };
  32
  33 static const struct iommu_platform_data omap3_iommu_pdata[] __initconst = {
  34         {
  35                 .name = "isp",
  36                 .nr_tlb_entries = 8,
  37                 .clk_name = "cam_ick",
  38         },
  39 #if defined(CONFIG_MPU_BRIDGE_IOMMU)
  40         {
  41                 .name = "iva2",
  42                 .nr_tlb_entries = 32,
  43                 .clk_name = "iva2_ck",
  44         },
  45 #endif
  46 };
  47 #define NR_IOMMU_DEVICES ARRAY_SIZE(omap3_iommu_pdata)
  48
  49 static struct platform_device *omap3_iommu_pdev[NR_IOMMU_DEVICES];
  50
  51 static int __init omap3_iommu_init(void)
  52 {
  53         int i, err;
  54
  55         for (i = 0; i < NR_IOMMU_DEVICES; i++) {
  56                 struct platform_device *pdev;
  57                 struct resource res[2];
  58
  59                 pdev = platform_device_alloc("omap-iommu", i);
  60                 if (!pdev) {
  61                         err = -ENOMEM;
  62                         goto err_out;
  63                 }
  64
  65                 memset(res, 0,  sizeof(res));
  66                 res[0].start = iommu_base[i];
  67                 res[0].end = iommu_base[i] + MMU_REG_SIZE - 1;
  68                 res[0].flags = IORESOURCE_MEM;
  69                 res[1].start = res[1].end = iommu_irq[i];
  70                 res[1].flags = IORESOURCE_IRQ;
  71
  72                 err = platform_device_add_resources(pdev, res,
  73                                                     ARRAY_SIZE(res));
  74                 if (err)
  75                         goto err_out;
  76                 err = platform_device_add_data(pdev, &omap3_iommu_pdata[i],
  77                                                sizeof(omap3_iommu_pdata[0]));
  78                 if (err)
  79                         goto err_out;
  80                 err = platform_device_add(pdev);
  81                 if (err)
  82                         goto err_out;
  83                 omap3_iommu_pdev[i] = pdev;
  84         }
  85         return 0;
  86
  87 err_out:
  88         while (i--)
  89                 platform_device_put(omap3_iommu_pdev[i]);
  90         return err;
  91 }
  92 module_init(omap3_iommu_init);
  93
  94 static void __exit omap3_iommu_exit(void)
  95 {
  96         int i;
  97
  98         for (i = 0; i < NR_IOMMU_DEVICES; i++)
  99                 platform_device_unregister(omap3_iommu_pdev[i]);
 100 }
 101 module_exit(omap3_iommu_exit);
 102
 103 MODULE_AUTHOR("Hiroshi DOYU");
 104 MODULE_DESCRIPTION("omap iommu: omap3 device registration");
 105 MODULE_LICENSE("GPL v2");