diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-02-10 21:30:27 +0530 |
|---|---|---|
| committer | Lokesh Pathak <lpathak@nvidia.com> | 2012-03-05 08:00:51 -0800 |
| commit | 43d479223cd9a61d0502115ea247e5831d845c38 (patch) | |
| tree | 353a7ccadba4291babbf75ab3cd1f0d0454f15f4 /drivers/base | |
| parent | ab52922d17de2d10a8c38c20f83fceefbe7e6f97 (diff) | |
regmap: Support for caching in reg_raw_write()
Adding support for caching of data into the
non-volatile register from the call of reg_raw_write().
This will allow the larger block of data write into multiple
register without worrying whether register is cached or not
through reg_raw_write().
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit c9157198417076c0c2664ba997e7b0217f61fcce)
Change-Id: I6e6a96bc9e08ca9b7fe0f52a0a5692a4a61ef0ae
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/87590
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index d08cff2bb7c1..99dc941d86c9 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -385,6 +385,26 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg, if (!map->writeable_reg(map->dev, reg + i)) return -EINVAL; + if (!map->cache_bypass && map->format.parse_val) { + unsigned int ival; + int val_bytes = map->format.val_bytes; + for (i = 0; i < val_len / val_bytes; i++) { + memcpy(map->work_buf, val + (i * val_bytes), val_bytes); + ival = map->format.parse_val(map->work_buf); + ret = regcache_write(map, reg + i, ival); + if (ret) { + dev_err(map->dev, + "Error in caching of register: %u ret: %d\n", + reg + i, ret); + return ret; + } + } + if (map->cache_only) { + map->cache_dirty = true; + return 0; + } + } + map->format.format_reg(map->work_buf, reg); u8[0] |= map->write_flag_mask; @@ -435,7 +455,7 @@ int _regmap_write(struct regmap *map, unsigned int reg, int ret; BUG_ON(!map->format.format_write && !map->format.format_val); - if (!map->cache_bypass) { + if (!map->cache_bypass && map->format.format_write) { ret = regcache_write(map, reg, val); if (ret != 0) return ret; @@ -512,12 +532,8 @@ EXPORT_SYMBOL_GPL(regmap_write); int regmap_raw_write(struct regmap *map, unsigned int reg, const void *val, size_t val_len) { - size_t val_count = val_len / map->format.val_bytes; int ret; - WARN_ON(!regmap_volatile_range(map, reg, val_count) && - map->cache_type != REGCACHE_NONE); - mutex_lock(&map->lock); ret = _regmap_raw_write(map, reg, val, val_len); |