linux-kernel - [PATCH] gpio: pca953x: Convert to use maple tree register cache

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Message-Id: <20230929-gpio-pca953x-maple-v1-1-d7960eac3d07@kernel.org>
Date:   Fri, 29 Sep 2023 14:24:13 +0200
From:   Mark Brown <broonie@...nel.org>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH] gpio: pca953x: Convert 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.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/gpio/gpio-pca953x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index bdd50a78e414..528ccb59b52a 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -414,7 +414,7 @@ static const struct regmap_config pca953x_i2c_regmap = {
 	.volatile_reg = pca953x_volatile_register,
 
 	.disable_locking = true,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = 0x7f,
 };
 
@@ -430,7 +430,7 @@ static const struct regmap_config pca953x_ai_i2c_regmap = {
 	.volatile_reg = pca953x_volatile_register,
 
 	.disable_locking = true,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = 0x7f,
 };
 

---
base-commit: 6465e260f48790807eef06b583b38ca9789b6072
change-id: 20230929-gpio-pca953x-maple-b39b99cd90db

Best regards,
-- 
Mark Brown <broonie@...nel.org>