ASoC: wm8904: 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 wm8904 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-v1-31-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 068e610b1b4c43448639f16899ece0415eb6dcef..ac4e1654a9676cb6779598a7942d79441e458354 100644 (file)
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -2148,7 +2148,7 @@ static const struct regmap_config wm8904_regmap = {
        .volatile_reg = wm8904_volatile_register,
        .readable_reg = wm8904_readable_register,
 
-       .cache_type = REGCACHE_RBTREE,
+       .cache_type = REGCACHE_MAPLE,
        .reg_defaults = wm8904_reg_defaults,
        .num_reg_defaults = ARRAY_SIZE(wm8904_reg_defaults),
 };