ARM: mxs: Add helper definition and function

Add helper definition and function for MXS-based.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/arm/mach-mxs/include/mach/io.h b/arch/arm/mach-mxs/include/mach/io.h
new file mode 100644
index 000000000000..289b7227e072
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/io.h
@@ -0,0 +1,22 @@
+/*
+ *  Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * 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.
+ */
+
+#ifndef __MACH_MXS_IO_H__
+#define __MACH_MXS_IO_H__
+
+/* Allow IO space to be anywhere in the memory */
+#define IO_SPACE_LIMIT 0xffffffff
+
+/* io address mapping macro */
+#define __io(a)         __typesafe_io(a)
+
+#define __mem_pci(a)    (a)
+
+#endif /* __MACH_MXS_IO_H__ */