diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-23 20:53:37 +0000 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-15 13:50:26 -0700 |
| commit | fe5d7a370e86d9a3ba10e94f834bd3d2619d0f73 (patch) | |
| tree | cdaae96ffa1ab537b0cfec61aa44c9c287e51b4a /include | |
| parent | 9d586b202c93d646167b235864e0cd21b2b2c87c (diff) | |
regmap: Allow drivers to sync only part of the register cache
Provide a regcache_sync_region() operation which allows drivers to
write only part of the cache back to the hardware. This is intended
for use in cases like power domains or DSP memories where part of the
device register map may be reset without fully resetting the device.
Fully supporting these devices is likely to require additional work to
make specific regions of the register map cache only while they are in
reset, but this is enough for most devices.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit 4d4cfd1656b5f6c88eae51c40741a695b108b006)
Change-Id: Ia8cccf7986611485ae090e234bb68084671d7641
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/96490
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/regmap.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index da27cb17597b..eb0a600fccd2 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -160,6 +160,8 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg, int regmap_get_val_bytes(struct regmap *map); int regcache_sync(struct regmap *map); +int regcache_sync_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); |