From 989e08c3d0044fc707c26c0329ed49e33e8e4c7b Mon Sep 17 00:00:00 2001 From: Hsin-Yi Wang Date: Wed, 12 Aug 2020 21:31:02 +0800 Subject: regulator: da9211: add cache_type Add regmap_cache to reduce wakeups events of interrupt if regulator is accessed frequently. This results in saving more power. Suggested-by: Daniel Kurtz Signed-off-by: Hsin-Yi Wang Acked-by: Adam Thomson Link: https://lore.kernel.org/r/20200812133101.2513317-1-hsinyi@chromium.org Signed-off-by: Mark Brown --- drivers/regulator/da9211-regulator.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/regulator') diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c index 297b3aa7c753..cffcefd0538d 100644 --- a/drivers/regulator/da9211-regulator.c +++ b/drivers/regulator/da9211-regulator.c @@ -51,10 +51,24 @@ static const struct regmap_range_cfg da9211_regmap_range[] = { }, }; +static bool da9211_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case DA9211_REG_STATUS_A: + case DA9211_REG_STATUS_B: + case DA9211_REG_EVENT_A: + case DA9211_REG_EVENT_B: + return true; + } + return false; +} + static const struct regmap_config da9211_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 5 * 128, + .volatile_reg = da9211_volatile_reg, + .cache_type = REGCACHE_RBTREE, .ranges = da9211_regmap_range, .num_ranges = ARRAY_SIZE(da9211_regmap_range), }; -- cgit v1.2.3-59-g8ed1b