[PATCH] ppc32 8xx: Added setbitsXX/clrbitsXX macro for read-modify-write operations
This adds setbitsXX/clrbitsXX macro for read-modify-write operations
and converts the 8xx core and drivers to use them.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
index df9cf6e..b919d8f 100644
--- a/include/asm-ppc/io.h
+++ b/include/asm-ppc/io.h
@@ -575,4 +575,11 @@
*/
#define xlate_dev_kmem_ptr(p) p
+/* access ports */
+#define setbits32(_addr, _v) out_be32((_addr), in_be32(_addr) | (_v))
+#define clrbits32(_addr, _v) out_be32((_addr), in_be32(_addr) & ~(_v))
+
+#define setbits16(_addr, _v) out_be16((_addr), in_be16(_addr) | (_v))
+#define clrbits16(_addr, _v) out_be16((_addr), in_be16(_addr) & ~(_v))
+
#endif /* __KERNEL__ */