path: root/arch/m68k/include/asm
diff options
authorAlison Wang <b18965@freescale.com>2012-03-26 21:49:02 +0000
committerjason <jason@jason-ThinkPad-T61.(none)>2012-09-20 20:39:26 +0800
commit33d4411931423a0524b968e44e068ac6c38e23e0 (patch)
treee020c0da3f228e87a756739ed8a4d227ea1371bd /arch/m68k/include/asm
parentf7799a1175d1538ddaabc49fbd30660a926bb32f (diff)
ColdFire: Add clear and set bits macros for ColdFire platform
Signed-off-by: Alison Wang <b18965@freescale.com>
Diffstat (limited to 'arch/m68k/include/asm')
1 files changed, 37 insertions, 1 deletions
diff --git a/arch/m68k/include/asm/io.h b/arch/m68k/include/asm/io.h
index d86eaf95e..50ed74989 100644
--- a/arch/m68k/include/asm/io.h
+++ b/arch/m68k/include/asm/io.h
@@ -1,7 +1,7 @@
* IO header file
- * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
* See file CREDITS for list of people who contributed to this
@@ -225,6 +225,42 @@ extern inline void out_be32(volatile unsigned *addr, int val)
*addr = val;
+/* Clear and set bits in one shot. These macros can be used to clear and
+ * set multiple bits in a register using a single call. These macros can
+ * also be used to set a multiple-bit bit pattern using a mask, by
+ * specifying the mask in the 'clear' parameter and the new bit pattern
+ * in the 'set' parameter.
+ */
+#define clrbits(type, addr, clear) \
+ out_##type((addr), in_##type(addr) & ~(clear))
+#define setbits(type, addr, set) \
+ out_##type((addr), in_##type(addr) | (set))
+#define clrsetbits(type, addr, clear, set) \
+ out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
+#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
+#define setbits_be32(addr, set) setbits(be32, addr, set)
+#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
+#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
+#define setbits_le32(addr, set) setbits(le32, addr, set)
+#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
+#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
+#define setbits_be16(addr, set) setbits(be16, addr, set)
+#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
+#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
+#define setbits_le16(addr, set) setbits(le16, addr, set)
+#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
+#define clrbits_8(addr, clear) clrbits(8, addr, clear)
+#define setbits_8(addr, set) setbits(8, addr, set)
+#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
static inline void sync(void)
/* This sync function is for PowerPC or other architecture instruction