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arm: Use asm-generic/io.h 

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

This has only been build-tested, feedback from architecture maintainers
is welcome.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Paul Burton 2017-09-14 15:05:03 -07:00 committed by Tom Rini
parent 593477c6b3
commit 8f8e6304df
1 changed files with 1 additions and 29 deletions
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30
arch/arm/include/asm/io.h
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@ -34,35 +34,6 @@ static inline void sync(void)
{ {
} }
/*
* 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 phys_addr_t virt_to_phys(void * vaddr)
{
return (phys_addr_t)((unsigned long)vaddr);
}
/* /*
* Generic virtual read/write. Note that we don't support half-word * Generic virtual read/write. Note that we don't support half-word
* read/writes. We define __arch_*[bl] here, and leave __arch_*w * read/writes. We define __arch_*[bl] here, and leave __arch_*w
@ -426,6 +397,7 @@ out:
#endif /* __mem_isa */ #endif /* __mem_isa */
#endif /* __KERNEL__ */ #endif /* __KERNEL__ */
#include <asm-generic/io.h>
#include <iotrace.h> #include <iotrace.h>
#endif /* __ASM_ARM_IO_H */ #endif /* __ASM_ARM_IO_H */