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Commit 954757d7 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown
Browse files

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: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent dfdc4448

drivers/base/regmap/regcache.c

+26 −7
Original line number Diff line number Diff line
@@ -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);



	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");

	if (map->cache_ops->sync) {

		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);