linux-kernel - [PATCH 02/11] mfd: cs47l24: Update to use maple tree register cache

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Date:   Thu, 13 Jul 2023 01:49:20 +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 02/11] mfd: cs47l24: 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 cs47l24 driver to use the more modern data structure.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/mfd/cs47l24-tables.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/cs47l24-tables.c b/drivers/mfd/cs47l24-tables.c
index c289d92a5c1d..878dfd298a17 100644
--- a/drivers/mfd/cs47l24-tables.c
+++ b/drivers/mfd/cs47l24-tables.c
@@ -1616,7 +1616,7 @@ const struct regmap_config cs47l24_spi_regmap = {
 	.readable_reg = cs47l24_readable_register,
 	.volatile_reg = cs47l24_volatile_register,
 
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.reg_defaults = cs47l24_reg_default,
 	.num_reg_defaults = ARRAY_SIZE(cs47l24_reg_default),
 };

-- 
2.39.2