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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-23 20:31:04 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-02-24 15:52:40 +0100 |
| commit | ac8d91c801905a061ca883dca427a5e19602a1e7 (patch) | |
| tree | 3b715a8aa18db4ed553811595c113ef95e1c5f75 /drivers/base/regmap/regcache-lzo.c | |
| parent | regmap: Mark the cache as clean after a successful sync (diff) | |
| download | linux-ac8d91c801905a061ca883dca427a5e19602a1e7.tar.xz linux-ac8d91c801905a061ca883dca427a5e19602a1e7.zip | |
regmap: Supply ranges to the sync operations
In order to allow us to support partial sync operations add minimum and
maximum register arguments to the sync operation and update the rbtree
and lzo caches to use this new information. The LZO implementation is
obviously not good, we could exit the iteration earlier, but there may
be room for more wide reaching optimisation there.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap/regcache-lzo.c')
| -rw-r--r-- | drivers/base/regmap/regcache-lzo.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c index b7d16143edeb..5e964e9b2bab 100644 --- a/drivers/base/regmap/regcache-lzo.c +++ b/drivers/base/regmap/regcache-lzo.c @@ -331,7 +331,8 @@ out: return ret; } -static int regcache_lzo_sync(struct regmap *map) +static int regcache_lzo_sync(struct regmap *map, unsigned int min, + unsigned int max) { struct regcache_lzo_ctx **lzo_blocks; unsigned int val; @@ -339,7 +340,12 @@ static int regcache_lzo_sync(struct regmap *map) int ret; lzo_blocks = map->cache; - for_each_set_bit(i, lzo_blocks[0]->sync_bmp, lzo_blocks[0]->sync_bmp_nbits) { + i = min; + for_each_set_bit_from(i, lzo_blocks[0]->sync_bmp, + lzo_blocks[0]->sync_bmp_nbits) { + if (i > max) + continue; + ret = regcache_read(map, i, &val); if (ret) return ret; |