1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/staging/csr/oska/io.h b/drivers/staging/csr/oska/io.h
new file mode 100644
index 000000000000..c6c406c364b9
--- /dev/null
+++ b/drivers/staging/csr/oska/io.h
@@ -0,0 +1,63 @@
+/*
+ * OSKA Linux implementation -- memory mapped I/O.
+ *
+ * Copyright (C) 2009 Cambridge Silicon Radio Ltd.
+ *
+ * Refer to LICENSE.txt included with this source code for details on
+ * the license terms.
+ */
+#ifndef __OSKA_LINUX_IO_H
+#define __OSKA_LINUX_IO_H
+
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/kernel-compat.h>
+
+typedef void __iomem *os_io_mem_t;
+
+static inline uint8_t os_io_read8(os_io_mem_t base, unsigned offset)
+{
+    return readb(base + offset);
+}
+
+static inline uint16_t os_io_read16(os_io_mem_t base, unsigned offset)
+{
+    return readw(base + offset);
+}
+
+static inline uint32_t os_io_read32(os_io_mem_t base, unsigned offset)
+{
+    return readl(base + offset);
+}
+
+static inline uint64_t os_io_read64(os_io_mem_t base, unsigned offset)
+{
+    return readq(base + offset);
+}
+
+static inline void os_io_write8(os_io_mem_t base, unsigned offset, uint8_t val)
+{
+    writeb(val, base + offset);
+}
+
+static inline void os_io_write16(os_io_mem_t base, unsigned offset, uint16_t val)
+{
+    writew(val, base + offset);
+}
+
+static inline void os_io_write32(os_io_mem_t base, unsigned offset, uint32_t val)
+{
+    writel(val, base + offset);
+}
+
+static inline void os_io_write64(os_io_mem_t base, unsigned offset, uint64_t val)
+{
+    writeq(val, base + offset);
+}
+
+static inline void os_io_memory_barrier(void)
+{
+    mb();
+}
+
+#endif /* #ifndef __OSKA_LINUX_IO_H */