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ARM: OMAP2+: Trivial fix for IOMMU merge issue
[~shefty/rdma-dev.git] / arch / arm / mach-omap2 / omap-iommu.c
1 /*
2  * omap iommu: omap 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/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/err.h>
16 #include <linux/slab.h>
17
18 #include <linux/platform_data/iommu-omap.h>
19 #include "omap_hwmod.h"
20 #include "omap_device.h"
21
22 static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
23 {
24         struct platform_device *pdev;
25         struct iommu_platform_data *pdata;
26         struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
27         static int i;
28
29         pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
30         if (!pdata)
31                 return -ENOMEM;
32
33         pdata->name = oh->name;
34         pdata->nr_tlb_entries = a->nr_tlb_entries;
35         pdata->da_start = a->da_start;
36         pdata->da_end = a->da_end;
37
38         if (oh->rst_lines_cnt == 1) {
39                 pdata->reset_name = oh->rst_lines->name;
40                 pdata->assert_reset = omap_device_assert_hardreset;
41                 pdata->deassert_reset = omap_device_deassert_hardreset;
42         }
43
44         pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata),
45                                 NULL, 0, 0);
46
47         kfree(pdata);
48
49         if (IS_ERR(pdev)) {
50                 pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
51                 return PTR_ERR(pdev);
52         }
53
54         i++;
55
56         return 0;
57 }
58
59 static int __init omap_iommu_init(void)
60 {
61         return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
62 }
63 /* must be ready before omap3isp is probed */
64 subsys_initcall(omap_iommu_init);
65
66 static void __exit omap_iommu_exit(void)
67 {
68         /* Do nothing */
69 }
70 module_exit(omap_iommu_exit);
71
72 MODULE_AUTHOR("Hiroshi DOYU");
73 MODULE_DESCRIPTION("omap iommu: omap device registration");
74 MODULE_LICENSE("GPL v2");