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Merge branch 'topic/cache' of git://opensource.wolfsonmicro.com/regmap into for-3.3

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This commit is contained in:
Mark Brown 2011-11-08 11:44:51 +00:00
commit c2b164fa8d
4 changed files with 24 additions and 1 deletions
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1
drivers/base/regmap/internal.h
View File

@ -74,6 +74,7 @@ struct regmap {
struct reg_default *reg_defaults;
const void *reg_defaults_raw;
void *cache;
bool cache_dirty;
};
struct regcache_ops {

19
drivers/base/regmap/regcache.c
View File

@ -241,6 +241,8 @@ int regcache_sync(struct regmap *map)
map->cache_ops->name);
name = map->cache_ops->name;
trace_regcache_sync(map->dev, name, "start");
if (!map->cache_dirty)
goto out;
if (map->cache_ops->sync) {
ret = map->cache_ops->sync(map);
} else {
@ -290,6 +292,23 @@ void regcache_cache_only(struct regmap *map, bool enable)
}
EXPORT_SYMBOL_GPL(regcache_cache_only);
/**
* regcache_mark_dirty: Mark the register cache as dirty
*
* @map: map to mark
*
* Mark the register cache as dirty, for example due to the device
* having been powered down for suspend. If the cache is not marked
* as dirty then the cache sync will be suppressed.
*/
void regcache_mark_dirty(struct regmap *map)
{
mutex_lock(&map->lock);
map->cache_dirty = true;
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_mark_dirty);
/**
* regcache_cache_bypass: Put a register map into cache bypass mode
*

4
drivers/base/regmap/regmap.c
View File

@ -306,8 +306,10 @@ int _regmap_write(struct regmap *map, unsigned int reg,
ret = regcache_write(map, reg, val);
if (ret != 0)
return ret;
if (map->cache_only)
if (map->cache_only) {
map->cache_dirty = true;
return 0;
}
}
trace_regmap_reg_write(map->dev, reg, val);

1
include/linux/regmap.h
View File

@ -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