ASoC: wm8971: 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 wm8971 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-v1-41-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8971.c b/sound/soc/codecs/wm8971.c
index b22d8f0b59be0d9a843f34375c85c4f51d7b4c32..e88f323d28b237e55ed02d37666f295fe6cb295e 100644 (file)
--- a/sound/soc/codecs/wm8971.c
+++ b/sound/soc/codecs/wm8971.c
@@ -668,7 +668,7 @@ static const struct regmap_config wm8971_regmap = {
 
        .reg_defaults = wm8971_reg_defaults,
        .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults),
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
 };
 
 static int wm8971_i2c_probe(struct i2c_client *i2c)