From: Mike Frysinger Date: Sat, 26 Dec 2009 15:25:56 +0000 (+0000) Subject: Blackfin: new dynamic bfin read/write mmr helpers X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f2521ce9ce84d1f10016a8fc91108ef9d3b14d2b;p=linux-beck.git 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: Mike Frysinger --- diff --git a/arch/blackfin/include/asm/def_LPBlackfin.h b/arch/blackfin/include/asm/def_LPBlackfin.h index f342ff0319df..4e562850021c 100644 --- a/arch/blackfin/include/asm/def_LPBlackfin.h +++ b/arch/blackfin/include/asm/def_LPBlackfin.h @@ -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__ */ /**************************************************