Commit 6eb0f5e0 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown
Browse files

regmap: Implement regcache_cache_bypass helper function 



Ensure we've got a function so users can enable/disable the
cache bypass option.

Signed-off-by: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent beb1a10f

drivers/base/regmap/regcache.c

+19 −0
Original line number Diff line number Diff line
@@ -286,6 +286,25 @@ 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->lock);

	map->cache_bypass = enable;

	mutex_unlock(&map->lock);

}

EXPORT_SYMBOL_GPL(regcache_cache_bypass);



bool regcache_set_val(void *base, unsigned int idx,

		      unsigned int val, unsigned int word_size)

{

include/linux/regmap.h

+1 −0
Original line number Diff line number Diff line
@@ -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