| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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 | |
| 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 | |
| 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 | |
| 57 | static 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 | } |
| 65 | omap_subsys_initcall(omap_iommu_init); |
| 66 | /* must be ready before omap3isp is probed */ |