[deliverable/linux.git] / arch / arm / mach-omap2 / omap-iommu.c

/*
 * omap iommu: omap device registration
 *
 * Copyright (C) 2008-2009 Nokia Corporation
 *
 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/slab.h>

#include <linux/platform_data/iommu-omap.h>
#include "soc.h"
#include "omap_hwmod.h"
#include "omap_device.h"

static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
{
	struct platform_device *pdev;
	struct iommu_platform_data *pdata;
	struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
	static int i;

	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return -ENOMEM;

	pdata->name = oh->name;
	pdata->nr_tlb_entries = a->nr_tlb_entries;
	pdata->da_start = a->da_start;
	pdata->da_end = a->da_end;

	if (oh->rst_lines_cnt == 1) {
		pdata->reset_name = oh->rst_lines->name;
		pdata->assert_reset = omap_device_assert_hardreset;
		pdata->deassert_reset = omap_device_deassert_hardreset;
	}

	pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));

	kfree(pdata);

	if (IS_ERR(pdev)) {
		pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
		return PTR_ERR(pdev);
	}

	i++;

	return 0;
}

static int __init omap_iommu_init(void)
{
	return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
}
/* must be ready before omap3isp is probed */
omap_subsys_initcall(omap_iommu_init);

static void __exit omap_iommu_exit(void)
{
	/* Do nothing */
}
module_exit(omap_iommu_exit);

MODULE_AUTHOR("Hiroshi DOYU");
MODULE_DESCRIPTION("omap iommu: omap device registration");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
	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 "soc.h"
	20	#include "omap_hwmod.h"
	21	#include "omap_device.h"
	22
	23	static 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	pdata->da_start = a->da_start;
	37	pdata->da_end = a->da_end;
	38
	39	if (oh->rst_lines_cnt == 1) {
	40	pdata->reset_name = oh->rst_lines->name;
	41	pdata->assert_reset = omap_device_assert_hardreset;
	42	pdata->deassert_reset = omap_device_deassert_hardreset;
	43	}
	44
	45	pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));
	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	omap_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");