Messages in this thread Patch in this message | | | From | Dimitris Papastamos <> | Subject | [PATCH 6/7] regmap: Implement regcache_cache_bypass helper function | Date | Wed, 28 Sep 2011 11:43:46 +0100 |
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Ensure we've got a function so users can enable/disable the cache bypass option.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> --- drivers/base/regmap/regcache.c | 19 +++++++++++++++++++ include/linux/regmap.h | 1 + 2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 8900897..a3f466c 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -288,6 +288,25 @@ void regcache_cache_only(struct regmap *map, bool enable) } EXPORT_SYMBOL_GPL(regcache_cache_only); +/** + * regcache_cache_bypass: Put a register map into cache bypass mode + * + * @map: map to configure + * @cache_only: flag if changes should not be written to the hardware + * + * When a register map is marked with the cache bypass option, writes + * to the register map API will only update the hardware and not the + * the cache directly. This is useful when syncing the cache back to + * the hardware. + */ +void regcache_cache_bypass(struct regmap *map, bool enable) +{ + mutex_lock(&map->sync_lock); + map->cache_bypass = enable; + mutex_unlock(&map->sync_lock); +} +EXPORT_SYMBOL_GPL(regcache_cache_bypass); + 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 76ac255..3daac2d 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -142,5 +142,6 @@ 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); #endif -- 1.7.6.4
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