From 8ae0d7e8a918e9603748abe9b31984fc5d96abb3 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 26 Oct 2011 10:34:22 +0200 Subject: regmap: Track if the register cache is dirty and suppress unneeded syncs Allow drivers to optimise out the register cache sync if they didn't need to do one. If the hardware is desynced from the register cache (by power loss for example) then the driver should call regcache_mark_dirty() to let the core know about this. Signed-off-by: Mark Brown --- include/linux/regmap.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/regmap.h') diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 690276a642cf..32043a9749e6 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -143,5 +143,6 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, int regcache_sync(struct regmap *map); void regcache_cache_only(struct regmap *map, bool enable); void regcache_cache_bypass(struct regmap *map, bool enable); +void regcache_mark_dirty(struct regmap *map); #endif -- cgit v1.2.2