regmap: Implement generic syncing functionality
In the absence of a sync callback, do it manually. This of course can't take advantange of the specific optimizations of each cache type but it will do well enough in most cases. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
parent
dfdc4448e0
commit
954757d767
|
@ -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);
|
||||
|
||||
|
|
Loading…
Reference in a new issue