commit: http://blackfin.uclinux.org/git/?p=linux-kernel;a=commitdiff;h=6ac00c92c96171414ac5fa5e68b022c73ceca62e branch: http://blackfin.uclinux.org/git/?p=linux-kernel;a=shortlog;h=refs/heads/2011R1
Signed-off-by: Mark Brown <[email protected]> --- drivers/base/regmap/regcache.c | 18 ++++++++++++++++++ include/linux/regmap.h | 2 ++ 2 files changed, 20 insertions(+), 0 deletions(-) diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 179f222..e2b172b 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -240,6 +240,24 @@ int regcache_sync(struct regmap *map) } EXPORT_SYMBOL_GPL(regcache_sync); +/** + * regcache_cache_only: Put a register map into cache only mode + * + * @map: map to configure + * @cache_only: flag if changes should be written to the hardware + * + * When a register map is marked as cache only writes to the register + * map API will only update the register cache, they will not cause + * any hardware changes. This is useful for allowing portions of + * drivers to act as though the device were functioning as normal when + * it is disabled for power saving reasons. + */ +void regcache_cache_only(struct regmap *map, bool enable) +{ + map->cache_only = enable; +} +EXPORT_SYMBOL_GPL(regcache_cache_only); + bool regcache_set_val(void *base, unsigned int idx, unsigned int val, unsigned int word_size) { diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 63b3075..76ac255 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -141,4 +141,6 @@ int regmap_update_bits(struct regmap *map, unsigned int reg, unsigned int mask, unsigned int val); int regcache_sync(struct regmap *map); +void regcache_cache_only(struct regmap *map, bool enable); + #endif
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