diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regcache.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index e2b172b93dba..6b9efd938dca 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -223,20 +223,39 @@ EXPORT_SYMBOL_GPL(regcache_write); */ int regcache_sync(struct regmap *map) { - int ret; + int ret = 0; + unsigned int val; + unsigned int i; const char *name; BUG_ON(!map->cache_ops); + dev_dbg(map->dev, "Syncing %s cache\n", + map->cache_ops->name); + name = map->cache_ops->name; + trace_regcache_sync(map->dev, name, "start"); if (map->cache_ops->sync) { - dev_dbg(map->dev, "Syncing %s cache\n", - map->cache_ops->name); - name = map->cache_ops->name; - trace_regcache_sync(map->dev, name, "start"); ret = map->cache_ops->sync(map); - trace_regcache_sync(map->dev, name, "stop"); + } else { + for (i = 0; i < map->num_reg_defaults; i++) { + ret = regcache_read(map, i, &val); + if (ret < 0) + goto out; + regcache_cache_bypass(map, true); + ret = regcache_write(map, i, val); + regcache_cache_bypass(map, false); + if (ret < 0) + goto out; + dev_dbg(map->dev, "Synced register %#x, value %#x\n", + map->reg_defaults[i].reg, + map->reg_defaults[i].def); + } + } - return 0; +out: + trace_regcache_sync(map->dev, name, "stop"); + + return ret; } EXPORT_SYMBOL_GPL(regcache_sync); |