arc: Use asm-generic/io.h

Convert the arc architecture to make use of the new asm-generic/io.h to
provide address mapping functions. As the generic implementations are
suitable for arc this is primarily a matter of removing code.

Feedback from architecture maintainers is welcome.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Alexey Brodkin <alexey.brodkin@synopsys.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>

diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 42e7f22b28ddb4ea2db55b6eef8c5558bbb3ecf6..a12303bc7367cd1b709357ca402a57443b0e5363 100644 (file)
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -50,30 +50,6 @@
 #define __iowmb()              do { } while (0)
 #endif
 
-/*
- * Given a physical address and a length, return a virtual address
- * that can be used to access the memory range with the caching
- * properties specified by "flags".
- */
-#define MAP_NOCACHE    (0)
-#define MAP_WRCOMBINE  (0)
-#define MAP_WRBACK     (0)
-#define MAP_WRTHROUGH  (0)
-
-static inline void *
-map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
-{
-       return (void *)((unsigned long)paddr);
-}
-
-/*
- * Take down a mapping set up by map_physmem().
- */
-static inline void unmap_physmem(void *vaddr, unsigned long flags)
-{
-
-}
-
 static inline void sync(void)
 {
        /* Not yet implemented */
@@ -302,9 +278,6 @@ static inline int __raw_writesl(unsigned int addr, void *data, int longlen)
 #define setbits_8(addr, set) setbits(8, addr, set)
 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
 
-static inline phys_addr_t virt_to_phys(void *vaddr)
-{
-       return (phys_addr_t)((unsigned long)vaddr);
-}
+#include <asm-generic/io.h>
 
 #endif /* __ASM_ARC_IO_H */