[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>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
index df9cf6ed189d..b919d8fb7d98 100644
--- a/include/asm-ppc/io.h
+++ b/include/asm-ppc/io.h
@@ -575,4 +575,11 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
  */
 #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__ */