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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /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.c77
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");