diff options
| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2011-09-29 14:36:27 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-09-30 13:57:47 +0100 |
| commit | 6eb0f5e0154facfe4f0acdb9f474cde773319efc (patch) | |
| tree | ef902b2751362a7ecd607a992bd4426a110d308b | |
| parent | beb1a10f219ce720c13168203bd5ebe4ce7879e0 (diff) | |
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: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | drivers/base/regmap/regcache.c | 19 | ||||
| -rw-r--r-- | 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 5dbc5076267e..876622453cd8 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -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) { diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 76ac255a17a5..3daac2d8dc37 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 |