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gerrit-public.fairphone.software / kernel / msm-5.4 / c12ba8ce2335389ce5416f88391cd67c7325c963 / . / arch / arm / mach-omap2 / omap-iommu.c
blob: 8867eb4025bf972f8ad86542ddd84a11c85dde4e [file] [log] [blame]
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]1/*
Kanigeri, Hari44da3972010-04-22 23:26:08 +0000[diff] [blame]2 * omap iommu: omap device registration
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]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
Florian Vaussard3c927482014-02-28 14:42:36 -0600[diff] [blame]13#include <linux/of.h>
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]14#include <linux/platform_device.h>
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]15#include <linux/err.h>
16#include <linux/slab.h>
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]17
Tony Lindgren2ab7c842012-11-02 12:24:14 -0700[diff] [blame]18#include <linux/platform_data/iommu-omap.h>
Tony Lindgrendad2d9e2013-02-09 19:20:57 -0800[diff] [blame]19#include "soc.h"
Tony Lindgren6f8c9d22012-12-20 11:50:34 -0800[diff] [blame]20#include "omap_hwmod.h"
21#include "omap_device.h"
Tony Lindgren7d7e1eb2012-08-27 17:43:01 -0700[diff] [blame]22
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]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;
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]29
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]30 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
31 if (!pdata)
32 return -ENOMEM;
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]33
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]34 pdata->name = oh->name;
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]35 pdata->nr_tlb_entries = a->nr_tlb_entries;
Kanigeri, Hari44da3972010-04-22 23:26:08 +0000[diff] [blame]36
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]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 }
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]42
Paul Walmsleyc1d1cd52013-01-26 00:48:53 -0700[diff] [blame]43 pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]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}
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]56
Kanigeri, Hari44da3972010-04-22 23:26:08 +0000[diff] [blame]57static int __init omap_iommu_init(void)
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]58{
Florian Vaussard3c927482014-02-28 14:42:36 -0600[diff] [blame]59 /* If dtb is there, the devices will be created dynamically */
60 if (of_have_populated_dt())
61 return -ENODEV;
62
Omar Ramirez Luna72b15b62012-11-19 19:05:50 -0600[diff] [blame]63 return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
Hiroshi DOYU066aa9c2009-01-28 21:32:04 +0200[diff] [blame]64}
Tony Lindgrenb76c8b192013-01-11 11:24:18 -0800[diff] [blame]65omap_subsys_initcall(omap_iommu_init);
Suman Anna228e5fad2015-07-10 15:43:05 -0500[diff] [blame]66/* must be ready before omap3isp is probed */