avr32: introduce asm/swab.h

Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/avr32/include/asm/Kbuild

 include include/asm-generic/Kbuild.asm
 
+header-y	+= swab.h
 header-y	+= cachectl.h

arch/avr32/include/asm/byteorder.h

@@ -4,34 +4,7 @@
 #ifndef __ASM_AVR32_BYTEORDER_H
 #define __ASM_AVR32_BYTEORDER_H
 
-#include <asm/types.h>
-#include <linux/compiler.h>
+#include <asm/swab.h>
+#include <linux/byteorder/big_endian.h>
 
-#define __BIG_ENDIAN
-#define __SWAB_64_THRU_32__
-
-#ifdef __CHECKER__
-extern unsigned long __builtin_bswap_32(unsigned long x);
-extern unsigned short __builtin_bswap_16(unsigned short x);
-#endif
-
-/*
- * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
- * the result.
- */
-#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
-static inline __attribute_const__ __u16 __arch_swab16(__u16 val)
-{
-	return __builtin_bswap_16(val);
-}
-#define __arch_swab16 __arch_swab16
-
-static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
-{
-	return __builtin_bswap_32(val);
-}
-#define __arch_swab32 __arch_swab32
-#endif
-
-#include <linux/byteorder.h>
 #endif /* __ASM_AVR32_BYTEORDER_H */

arch/avr32/include/asm/swab.h

+/*
+ * AVR32 byteswapping functions.
+ */
+#ifndef __ASM_AVR32_SWAB_H
+#define __ASM_AVR32_SWAB_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#define __SWAB_64_THRU_32__
+
+#ifdef __CHECKER__
+extern unsigned long __builtin_bswap_32(unsigned long x);
+extern unsigned short __builtin_bswap_16(unsigned short x);
+#endif
+
+/*
+ * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
+ * the result.
+ */
+#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
+static inline __attribute_const__ __u16 __arch_swab16(__u16 val)
+{
+	return __builtin_bswap_16(val);
+}
+#define __arch_swab16 __arch_swab16
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
+{
+	return __builtin_bswap_32(val);
+}
+#define __arch_swab32 __arch_swab32
+#endif
+
+#endif /* __ASM_AVR32_SWAB_H */