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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/arm/mach-omap2/omap-iommu.c |
Initial import
Diffstat (limited to 'arch/arm/mach-omap2/omap-iommu.c')
-rw-r--r-- | arch/arm/mach-omap2/omap-iommu.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c new file mode 100644 index 000000000..4068350f9 --- /dev/null +++ b/arch/arm/mach-omap2/omap-iommu.c @@ -0,0 +1,77 @@ +/* + * 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/of.h> +#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; + + 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) +{ + /* If dtb is there, the devices will be created dynamically */ + if (of_have_populated_dt()) + return -ENODEV; + + 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"); |