code.ossystems Code Review - openembedded-core.git/blob

   1 From 6a84082597dd322713c5d5951530e3eecb878ad4 Mon Sep 17 00:00:00 2001
   2 From: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
   3 Date: Wed, 28 Jan 2009 21:32:04 +0200
   4 Subject: [PATCH] omap iommu: omap3 iommu device registration
   5
   6 Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
   7 ---
   8  arch/arm/mach-omap2/omap3-iommu.c |  104 +++++++++++++++++++++++++++++++++++++
   9  1 files changed, 104 insertions(+), 0 deletions(-)
  10  create mode 100644 arch/arm/mach-omap2/omap3-iommu.c
  11
  12 diff --git a/arch/arm/mach-omap2/omap3-iommu.c b/arch/arm/mach-omap2/omap3-iommu.c
  13 new file mode 100644
  14 index 0000000..97481cc
  15 --- /dev/null
  16 +++ b/arch/arm/mach-omap2/omap3-iommu.c
  17 @@ -0,0 +1,104 @@
  18 +/*
  19 + * omap iommu: omap3 device registration
  20 + *
  21 + * Copyright (C) 2008-2009 Nokia Corporation
  22 + *
  23 + * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
  24 + *
  25 + * This program is free software; you can redistribute it and/or modify
  26 + * it under the terms of the GNU General Public License version 2 as
  27 + * published by the Free Software Foundation.
  28 + */
  29 +
  30 +#include <linux/platform_device.h>
  31 +#include <linux/io.h>
  32 +
  33 +#include <mach/iommu.h>
  34 +
  35 +#define OMAP3_MMU1_BASE        0x480bd400
  36 +#define OMAP3_MMU2_BASE        0x5d000000
  37 +#define OMAP3_MMU1_IRQ 24
  38 +#define OMAP3_MMU2_IRQ 28
  39 +
  40 +static struct resource omap3_iommu_res[] = {
  41 +       { /* Camera ISP MMU */
  42 +               .start          = OMAP3_MMU1_BASE,
  43 +               .end            = OMAP3_MMU1_BASE + MMU_REG_SIZE - 1,
  44 +               .flags          = IORESOURCE_MEM,
  45 +       },
  46 +       {
  47 +               .start          = OMAP3_MMU1_IRQ,
  48 +               .flags          = IORESOURCE_IRQ,
  49 +       },
  50 +       { /* IVA2.2 MMU */
  51 +               .start          = OMAP3_MMU2_BASE,
  52 +               .end            = OMAP3_MMU2_BASE + MMU_REG_SIZE - 1,
  53 +               .flags          = IORESOURCE_MEM,
  54 +       },
  55 +       {
  56 +               .start          = OMAP3_MMU2_IRQ,
  57 +               .flags          = IORESOURCE_IRQ,
  58 +       },
  59 +};
  60 +#define NR_IOMMU_RES (ARRAY_SIZE(omap3_iommu_res) / 2)
  61 +
  62 +static const struct iommu_platform_data omap3_iommu_pdata[] __initconst = {
  63 +       {
  64 +               .name = "isp",
  65 +               .nr_tlb_entries = 8,
  66 +               .clk_name = "cam_ick",
  67 +       },
  68 +       {
  69 +               .name = "iva2",
  70 +               .nr_tlb_entries = 32,
  71 +               .clk_name = "iva2_ck",
  72 +       },
  73 +};
  74 +#define NR_IOMMU_DEVICES ARRAY_SIZE(omap3_iommu_pdata)
  75 +
  76 +static struct platform_device *omap3_iommu_pdev[NR_IOMMU_DEVICES];
  77 +
  78 +static int __init omap3_iommu_init(void)
  79 +{
  80 +       int i, err;
  81 +
  82 +       for (i = 0; i < NR_IOMMU_DEVICES; i++) {
  83 +               struct platform_device *pdev;
  84 +
  85 +               pdev = platform_device_alloc("omap-iommu", i + 1);
  86 +               if (!pdev)
  87 +                       goto err_out;
  88 +               err = platform_device_add_resources(pdev,
  89 +                                   &omap3_iommu_res[2 * i], NR_IOMMU_RES);
  90 +               if (err)
  91 +                       goto err_out;
  92 +               err = platform_device_add_data(pdev, &omap3_iommu_pdata[i],
  93 +                                              sizeof(omap3_iommu_pdata[0]));
  94 +               if (err)
  95 +                       goto err_out;
  96 +               err = platform_device_add(pdev);
  97 +               if (err)
  98 +                       goto err_out;
  99 +               omap3_iommu_pdev[i] = pdev;
 100 +       }
 101 +       return 0;
 102 +
 103 +err_out:
 104 +       while (i--)
 105 +               platform_device_put(omap3_iommu_pdev[i]);
 106 +       return err;
 107 +}
 108 +module_init(omap3_iommu_init);
 109 +
 110 +static void __exit omap3_iommu_exit(void)
 111 +{
 112 +       int i;
 113 +
 114 +       for (i = 0; i < NR_IOMMU_DEVICES; i++)
 115 +               platform_device_unregister(omap3_iommu_pdev[i]);
 116 +}
 117 +module_exit(omap3_iommu_exit);
 118 +
 119 +MODULE_AUTHOR("Hiroshi DOYU");
 120 +MODULE_DESCRIPTION("omap iommu: omap3 device registration");
 121 +MODULE_LICENSE("GPL v2");
 122 --
 123 1.5.6.5
 124