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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 <djkurtz@chromium.org>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20200812133101.2513317-1-hsinyi@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Hsin-Yi Wang 2020-08-12 21:31:02 +08:00 committed by Mark Brown
parent 4cf12735de
commit 989e08c3d0
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 14 additions and 0 deletions
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14
drivers/regulator/da9211-regulator.c
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@ -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),
};