Messages in this thread Patch in this message | | | From | Hsin-Yi Wang <> | Subject | [PATCH] regulator: da9211: add cache_type | Date | Wed, 12 Aug 2020 21:31:02 +0800 |
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Add regmap_cache to reduce wakeups events of interrupt if regulator is accessed frequently. This results in saving more power.
Suggested-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> --- drivers/regulator/da9211-regulator.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
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), }; -- 2.28.0.236.gb10cc79966-goog
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