linux-kernel - [PATCH 09/11] mfd: wm8994: Update to use maple tree register cache

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Message-Id: <20230713-mfd-cirrus-maple-v1-9-16dacae402a8@kernel.org>
Date:   Thu, 13 Jul 2023 01:49:27 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>,
        Lee Jones <lee@...nel.org>
Cc:     alsa-devel@...a-project.org, patches@...nsource.cirrus.com,
        linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>
Subject: [PATCH 09/11] mfd: wm8994: 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 wm8994 driver to use the more modern data structure.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/mfd/wm8994-regmap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/wm8994-regmap.c b/drivers/mfd/wm8994-regmap.c
index cd4fef7df336..ee2ed6773afd 100644
--- a/drivers/mfd/wm8994-regmap.c
+++ b/drivers/mfd/wm8994-regmap.c
@@ -1238,7 +1238,7 @@ struct regmap_config wm1811_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 16,
 
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 
 	.reg_defaults = wm1811_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm1811_defaults),
@@ -1253,7 +1253,7 @@ struct regmap_config wm8994_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 16,
 
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 
 	.reg_defaults = wm8994_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm8994_defaults),
@@ -1268,7 +1268,7 @@ struct regmap_config wm8958_regmap_config = {
 	.reg_bits = 16,
 	.val_bits = 16,
 
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 
 	.reg_defaults = wm8958_defaults,
 	.num_reg_defaults = ARRAY_SIZE(wm8958_defaults),

-- 
2.39.2