ASoC: cs4270: 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 cs4270 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-v1-7-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index ab32f15e3b441a12e61dc8eec80f9c06e308bf25..3df567214952dba754c1a43682c59dffd753977f 100644 (file)
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -636,7 +636,7 @@ static const struct regmap_config cs4270_regmap = {
        .max_register =         CS4270_LASTREG,
        .reg_defaults =         cs4270_reg_defaults,
        .num_reg_defaults =     ARRAY_SIZE(cs4270_reg_defaults),
-       .cache_type =           REGCACHE_RBTREE,
+       .cache_type =           REGCACHE_MAPLE,
        .write_flag_mask =      CS4270_I2C_INCR,
 
        .readable_reg =         cs4270_reg_is_readable,