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regcache: Add ->populate() callback to separate from ->init()

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In the future changes we would like to change the flow of the cache handling.
Add ->populate() callback in order to prepare for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251031080540.3970776-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko 2025-10-31 09:03:16 +01:00 committed by Mark Brown
parent e062bdfdd6
commit 94a3a95f03
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GPG Key ID: 24D68B725D5487D0
2 changed files with 17 additions and 0 deletions
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1
drivers/base/regmap/internal.h
View File

@ -186,6 +186,7 @@ struct regcache_ops {
enum regcache_type type; enum regcache_type type;
int (*init)(struct regmap *map); int (*init)(struct regmap *map);
int (*exit)(struct regmap *map); int (*exit)(struct regmap *map);
int (*populate)(struct regmap *map);
#ifdef CONFIG_DEBUG_FS #ifdef CONFIG_DEBUG_FS
void (*debugfs_init)(struct regmap *map); void (*debugfs_init)(struct regmap *map);
#endif #endif

16
drivers/base/regmap/regcache.c
View File

@ -222,8 +222,24 @@ int regcache_init(struct regmap *map, const struct regmap_config *config)
if (ret) if (ret)
goto err_free; goto err_free;
} }
if (map->num_reg_defaults && map->cache_ops->populate) {
dev_dbg(map->dev, "Populating %s cache\n", map->cache_ops->name);
map->lock(map->lock_arg);
ret = map->cache_ops->populate(map);
map->unlock(map->lock_arg);
if (ret)
goto err_exit;
}
return 0; return 0;
err_exit:
if (map->cache_ops->exit) {
dev_dbg(map->dev, "Destroying %s cache\n", map->cache_ops->name);
map->lock(map->lock_arg);
ret = map->cache_ops->exit(map);
map->unlock(map->lock_arg);
}
err_free: err_free:
kfree(map->reg_defaults); kfree(map->reg_defaults);
if (map->cache_free) if (map->cache_free)