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kernel/linux-imx6_3.14.28/arch/arm/mach-omap2/omap-iommu.c 1.79 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * 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
  ", __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");