summaryrefslogtreecommitdiffstats
path: root/arch/blackfin
diff options
context:
space:
mode:
authorMike Frysinger <vapier@gentoo.org>2009-12-26 15:25:56 +0000
committerMike Frysinger <vapier@gentoo.org>2010-08-06 12:55:44 -0400
commitf2521ce9ce84d1f10016a8fc91108ef9d3b14d2b (patch)
tree660d1eced596877b36c7b6a5e6971c0df94aadea /arch/blackfin
parent222f6eb66eb966ac9f21c0224f53b98787529e10 (diff)
downloadop-kernel-dev-f2521ce9ce84d1f10016a8fc91108ef9d3b14d2b.zip
op-kernel-dev-f2521ce9ce84d1f10016a8fc91108ef9d3b14d2b.tar.gz
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 <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/include/asm/def_LPBlackfin.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/def_LPBlackfin.h b/arch/blackfin/include/asm/def_LPBlackfin.h
index f342ff0..4e56285 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__ */
/**************************************************
OpenPOWER on IntegriCloud