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/platform_device.h>
15#include <linux/err.h>
16#include <linux/slab.h>
17
18#include <linux/platform_data/iommu-omap.h>
19#include "soc.h"
20#include "omap_hwmod.h"
21#include "omap_device.h"
22
23static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
24{
25	struct platform_device *pdev;
26	struct iommu_platform_data *pdata;
27	struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
28	static int i;
29
30	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
31	if (!pdata)
32		return -ENOMEM;
33
34	pdata->name = oh->name;
35	pdata->nr_tlb_entries = a->nr_tlb_entries;
36
37	if (oh->rst_lines_cnt == 1) {
38		pdata->reset_name = oh->rst_lines->name;
39		pdata->assert_reset = omap_device_assert_hardreset;
40		pdata->deassert_reset = omap_device_deassert_hardreset;
41	}
42
43	pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));
44
45	kfree(pdata);
46
47	if (IS_ERR(pdev)) {
48		pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
49		return PTR_ERR(pdev);
50	}
51
52	i++;
53
54	return 0;
55}
56
57static int __init omap_iommu_init(void)
58{
59	/* If dtb is there, the devices will be created dynamically */
60	if (of_have_populated_dt())
61		return -ENODEV;
62
63	return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
64}
65omap_subsys_initcall(omap_iommu_init);
66/* must be ready before omap3isp is probed */
67