Added missing tegra files.HEADmaster

1 files changed, 48 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/io.c b/arch/arm/mach-davinci/io.c
new file mode 100644
index 00000000000..8ea60a8b249
--- /dev/null
+++ b/arch/arm/mach-davinci/io.c
@@ -0,0 +1,48 @@
+/*
+ * DaVinci I/O mapping code
+ *
+ * Copyright (C) 2005-2006 Texas Instruments
+ *
+ * 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/io.h>
+
+#include <asm/tlb.h>
+#include <asm/mach/map.h>
+
+#include <mach/common.h>
+
+/*
+ * Intercept ioremap() requests for addresses in our fixed mapping regions.
+ */
+void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type)
+{
+        struct map_desc *desc = davinci_soc_info.io_desc;
+        int desc_num = davinci_soc_info.io_desc_num;
+        int i;
+
+        for (i = 0; i < desc_num; i++, desc++) {
+                unsigned long iophys = __pfn_to_phys(desc->pfn);
+                unsigned long iosize = desc->length;
+
+                if (p >= iophys && (p + size) <= (iophys + iosize))
+                        return __io(desc->virtual + p - iophys);
+        }
+
+        return __arm_ioremap_caller(p, size, type,
+                                        __builtin_return_address(0));
+}
+EXPORT_SYMBOL(davinci_ioremap);
+
+void davinci_iounmap(volatile void __iomem *addr)
+{
+        unsigned long virt = (unsigned long)addr;
+
+        if (virt >= VMALLOC_START && virt < VMALLOC_END)
+                __iounmap(addr);
+}
+EXPORT_SYMBOL(davinci_iounmap);