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/of.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/err.h>
17#include <linux/slab.h>
18
19#include <linux/platform_data/iommu-omap.h>
20#include "soc.h"
21#include "omap_hwmod.h"
22#include "omap_device.h"
23
24static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
25{
26	struct platform_device *pdev;
27	struct iommu_platform_data *pdata;
28	struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
29	static int i;
30
31	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
32	if (!pdata)
33		return -ENOMEM;
34
35	pdata->name = oh->name;
36	pdata->nr_tlb_entries = a->nr_tlb_entries;
37	pdata->da_start = a->da_start;
38	pdata->da_end = a->da_end;
39
40	if (oh->rst_lines_cnt == 1) {
41		pdata->reset_name = oh->rst_lines->name;
42		pdata->assert_reset = omap_device_assert_hardreset;
43		pdata->deassert_reset = omap_device_deassert_hardreset;
44	}
45
46	pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));
47
48	kfree(pdata);
49
50	if (IS_ERR(pdev)) {
51		pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
52		return PTR_ERR(pdev);
53	}
54
55	i++;
56
57	return 0;
58}
59
60static int __init omap_iommu_init(void)
61{
62	/* If dtb is there, the devices will be created dynamically */
63	if (of_have_populated_dt())
64		return -ENODEV;
65
66	return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
67}
68/* must be ready before omap3isp is probed */
69omap_subsys_initcall(omap_iommu_init);
70
71static void __exit omap_iommu_exit(void)
72{
73	/* Do nothing */
74}
75module_exit(omap_iommu_exit);
76
77MODULE_AUTHOR("Hiroshi DOYU");
78MODULE_DESCRIPTION("omap iommu: omap device registration");
79MODULE_LICENSE("GPL v2");