The clrsetbits_...() macros are useful for working with memory mapped I/O.
But they do not work with I/O space, as used on x86 machines.
Add some macros to provide similar features for I/O.
Signed-off-by: Simon Glass <s...@chromium.org>
---
arch/x86/include/asm/io.h | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index e0b2561..38b543d 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -254,6 +254,28 @@ __OUTS(b)
__OUTS(w)
__OUTS(l)
+/* IO space accessors */
+#define clrio(type, addr, clear) \
+ out##type(in##type(addr) & ~(clear), (addr))
+
+#define setio(type, addr, set) \
+ out##type(in##type(addr) | (set), (addr))
+
+#define clrsetio(type, addr, clear, set) \
+ out##type((in##type(addr) & ~(clear)) | (set), (addr))
+
+#define clrio_le32(addr, clear) clrio(l, addr, clear)
+#define clrio_le16(addr, clear) clrio(w, addr, clear)
+#define clrio_8(addr, clear) clrio(b, addr, clear)
+
+#define setio_le32(addr, set) setio(l, addr, set)
+#define setio_le16(addr, set) setio(w, addr, set)
+#define setio_8(addr, set) setio(b, addr, set)
+
+#define clrsetio_le32(addr, clear, set) clrsetio(l, addr, clear, set)
+#define clrsetio_le16(addr, clear, set) clrsetio(w, addr, clear, set)
+#define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set)
+
static inline void sync(void)
{
}
--
2.7.0.rc3.207.g0ac5344
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