forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

regmap: Add support for discarding parts of the register cache

Browse source 
Allow drivers to discard parts of the register cache, for example if part
of the hardware has been reset.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2013-05-08 13:55:22 +01:00
parent f722406faa
commit 697e85bc6a
4 changed files with 70 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/linux/regmap.h
View file

@ -394,6 +394,8 @@ bool regmap_can_raw_write(struct regmap *map);
int regcache_sync(struct regmap *map);
int regcache_sync_region(struct regmap *map, unsigned int min,
unsigned int max);
int regcache_drop_region(struct regmap *map, unsigned int min,
unsigned int max);
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);
@ -562,6 +564,13 @@ static inline int regcache_sync_region(struct regmap *map, unsigned int min,
return -EINVAL;
}
static inline int regcache_drop_region(struct regmap *map, unsigned int min,
unsigned int max)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline void regcache_cache_only(struct regmap *map, bool enable)
{
WARN_ONCE(1, "regmap API is disabled");