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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot