ASoC: wm8903: Update to use maple tree register cache

The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache. In
v6.5 it has also acquired the ability to generate multi-register writes in
sync operations, bringing performance up to parity with the rbtree cache
there.

Update the wm8903 driver to use the more modern data structure.

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230713-asoc-cirrus-maple-v1-30-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 901b65ef8de5b5c35dc6a7ce71bbc2769ffd5d0f..84ae1102ac883738d4fa31849234a4a5094b7b6e 100644 (file)
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -1902,7 +1902,7 @@ static const struct regmap_config wm8903_regmap = {
        .volatile_reg = wm8903_volatile_register,
        .readable_reg = wm8903_readable_register,
 
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
        .reg_defaults = wm8903_reg_defaults,
        .num_reg_defaults = ARRAY_SIZE(wm8903_reg_defaults),
 };