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 "omap_hwmod.h" 20 #include "omap_device.h" 21 22 static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused) 23 { 24 struct platform_device *pdev; 25 struct iommu_platform_data *pdata; 26 struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr; 27 static int i; 28 29 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); 30 if (!pdata) 31 return -ENOMEM; 32 33 pdata->name = oh->name; 34 pdata->nr_tlb_entries = a->nr_tlb_entries; 35 pdata->da_start = a->da_start; 36 pdata->da_end = a->da_end; 37 38 if (oh->rst_lines_cnt == 1) { 39 pdata->reset_name = oh->rst_lines->name; 40 pdata->assert_reset = omap_device_assert_hardreset; 41 pdata->deassert_reset = omap_device_deassert_hardreset; 42 } 43 44 pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata), 45 NULL, 0, 0); 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 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"); 75