x86: quark: Add clrbits, setbits, clrsetbits macros for message port access

On Intel Quark, lots of registers on the message port need be
programmed. Add handy clrbits, setbits, clrsetbits macros for
message port access.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/x86/include/asm/arch-quark/msg_port.h b/arch/x86/include/asm/arch-quark/msg_port.h
index 2e78a66..313e23f 100644 (file)
--- a/arch/x86/include/asm/arch-quark/msg_port.h
+++ b/arch/x86/include/asm/arch-quark/msg_port.h
@@ -101,6 +101,37 @@ u32 msg_port_io_read(u8 port, u32 reg);
  */
 void msg_port_io_write(u8 port, u32 reg, u32 value);
 
+/* clrbits, setbits, clrsetbits macros for message port access */
+
+#define msg_port_normal_read   msg_port_read
+#define msg_port_normal_write  msg_port_write
+
+#define msg_port_generic_clrsetbits(type, port, reg, clr, set)         \
+       msg_port_##type##_write(port, reg,                              \
+                               (msg_port_##type##_read(port, reg)      \
+                               & ~(clr)) | (set))
+
+#define msg_port_clrbits(port, reg, clr)               \
+       msg_port_generic_clrsetbits(normal, port, reg, clr, 0)
+#define msg_port_setbits(port, reg, set)               \
+       msg_port_generic_clrsetbits(normal, port, reg, 0, set)
+#define msg_port_clrsetbits(port, reg, clr, set)       \
+       msg_port_generic_clrsetbits(normal, port, reg, clr, set)
+
+#define msg_port_alt_clrbits(port, reg, clr)           \
+       msg_port_generic_clrsetbits(alt, port, reg, clr, 0)
+#define msg_port_alt_setbits(port, reg, set)           \
+       msg_port_generic_clrsetbits(alt, port, reg, 0, set)
+#define msg_port_alt_clrsetbits(port, reg, clr, set)   \
+       msg_port_generic_clrsetbits(alt, port, reg, clr, set)
+
+#define msg_port_io_clrbits(port, reg, clr)            \
+       msg_port_generic_clrsetbits(io, port, reg, clr, 0)
+#define msg_port_io_setbits(port, reg, set)            \
+       msg_port_generic_clrsetbits(io, port, reg, 0, set)
+#define msg_port_io_clrsetbits(port, reg, clr, set)    \
+       msg_port_generic_clrsetbits(io, port, reg, clr, set)
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* _QUARK_MSG_PORT_H_ */