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@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index b0d768e..00ffa16 100644 (file)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -422,7 +422,7 @@ 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,
 };
 
@@ -438,7 +438,7 @@ 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,
 };