ASoC: wm8991: 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 wm8991 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-v1-35-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8991.c b/sound/soc/codecs/wm8991.c
index 8cb2ae829699842a29d059a9ed4f899e79b55340..590318aafaea1eeacd6936d16f0d5a34884236f5 100644 (file)
--- a/sound/soc/codecs/wm8991.c
+++ b/sound/soc/codecs/wm8991.c
@@ -1253,7 +1253,7 @@ static const struct regmap_config wm8991_regmap = {
        .volatile_reg = wm8991_volatile,
        .reg_defaults = wm8991_reg_defaults,
        .num_reg_defaults = ARRAY_SIZE(wm8991_reg_defaults),
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
 };
 
 static int wm8991_i2c_probe(struct i2c_client *i2c)