Commit 8b31ec55 authored Jan 04, 2016 by Xiubo Li Committed by Mark Brown Feb 20, 2016

regcache: Introduce the index parsing API by stride order



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 <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent ca747be2

drivers/base/regmap/internal.h

+6 −0

Original line number	Original line	Diff line number	Diff line
	@@ -273,4 +273,10 @@ static inline unsigned int regmap_get_offset(const struct regmap *map,
	return index * map->reg_stride;		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		#endif