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Commit f2521ce9 authored by Mike Frysinger's avatar Mike Frysinger
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Blackfin: new dynamic bfin read/write mmr helpers 



These are useful when working with C structs of MMRs as the appropriate
size is selected based on the given argument.

Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 222f6eb6

arch/blackfin/include/asm/def_LPBlackfin.h

+17 −0
Original line number Diff line number Diff line
@@ -50,6 +50,23 @@ 
#define bfin_write16(addr, val) _bfin_writeX(addr, val, 16, w)

#define bfin_write32(addr, val) _bfin_writeX(addr, val, 32,  )



#define bfin_read(addr) \

({ \

    sizeof(*(addr)) == 1 ? bfin_read8(addr)  : \

    sizeof(*(addr)) == 2 ? bfin_read16(addr) : \

    sizeof(*(addr)) == 4 ? bfin_read32(addr) : \

    ({ BUG(); 0; }); \

})

#define bfin_write(addr, val) \

({ \

	switch (sizeof(*(addr))) { \

	case 1: bfin_write8(addr, val);  break; \

	case 2: bfin_write16(addr, val); break; \

	case 4: bfin_write32(addr, val); break; \

	default: BUG(); \

	} \

})



#endif /* __ASSEMBLY__ */



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