Here introduces regcache_get_index_by_order() for regmap cache,
which uses the register stride order and bit rotation, to improve
the performance.
Signed-off-by: Xiubo Li <lixi...@cmss.chinamobile.com>
---
drivers/base/regmap/internal.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index c22b04b..5c79526 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -273,4 +273,10 @@ static inline unsigned int regmap_get_offset(const struct
regmap *map,
return index * map->reg_stride;
}
+static inline unsigned int regcache_get_index_by_order(const struct regmap
*map,
+ unsigned int reg)
+{
+ return reg >> map->reg_stride_order;
+}
+
#endif
--
1.8.3.1
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