regmap has introduced a maple tree based register cache which makes use of this more advanced data structure which has been added to the kernel recently. Maple trees are much flatter than rbtrees, meaning that they do not grow to such depths when the register map is sparse which makes access a bit more efficient. The maple tree cache type is still a bit of a work in progress but should be effective for some devices already.

RT5682 seems like a good candidate for maple tree. It only supports single register read/write operations so will gain minimal benefit from storing the register data in device native format like rbtree does (none for SoundWire) and has some sparsity in the register map which is a good fit for maple tree.

Convert to use maple tree. There should be little if any visible difference at runtime.

Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/rt5682-sdw.c | 2 +- sound/soc/codecs/rt5682s.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt5682-sdw.c b/sound/soc/codecs/rt5682-sdw.c index 5f80a5d59b65..fb7951f11c92 100644 --- a/sound/soc/codecs/rt5682-sdw.c +++ b/sound/soc/codecs/rt5682-sdw.c @@ -79,7 +79,7 @@ static const struct regmap_config rt5682_sdw_indirect_regmap = { .max_register = RT5682_I2C_MODE, .volatile_reg = rt5682_volatile_register, .readable_reg = rt5682_readable_register, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, .reg_defaults = rt5682_reg, .num_reg_defaults = RT5682_REG_NUM, .use_single_read = true, diff --git a/sound/soc/codecs/rt5682s.c b/sound/soc/codecs/rt5682s.c index 9c34dca58f54..36102fa2b806 100644 --- a/sound/soc/codecs/rt5682s.c +++ b/sound/soc/codecs/rt5682s.c @@ -3046,7 +3046,7 @@ static const struct regmap_config rt5682s_regmap = { .max_register = RT5682S_MAX_REG, .volatile_reg = rt5682s_volatile_register, .readable_reg = rt5682s_readable_register, - .cache_type = REGCACHE_RBTREE, + .cache_type = REGCACHE_MAPLE, .reg_defaults = rt5682s_reg, .num_reg_defaults = ARRAY_SIZE(rt5682s_reg), .use_single_read = true,

--- base-commit: 4a670ac3e75e517c96cbd01ef870dbd598c3ce71 change-id: 20230419-asoc-rt5682-maple-7da060991ca4

Best regards,