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regulator: sy8824x: Enable REGCACHE_FLAT

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Enable regmap cache to reduce i2c transactions and corresponding
interrupts if regulator is accessed frequently. Since the register map
is small -- there's only one register in sy8824c and sy8824e, there
are only two registers in sy20276 and sy20278, so we use a FLAT regmap
cache.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20210803165043.042ec24d@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jisheng Zhang 2021-08-03 16:50:43 +08:00 committed by Mark Brown
parent 15b4d2b972
commit 784ed36958
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 1 deletions
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16
drivers/regulator/sy8824x.c
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@ -25,6 +25,7 @@ struct sy8824_config {
unsigned int vsel_min;
unsigned int vsel_step;
unsigned int vsel_count;
const struct regmap_config *config;
};
struct sy8824_device_info {
@ -110,6 +111,15 @@ static int sy8824_regulator_register(struct sy8824_device_info *di,
static const struct regmap_config sy8824_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.num_reg_defaults_raw = 1,
.cache_type = REGCACHE_FLAT,
};
static const struct regmap_config sy20276_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.num_reg_defaults_raw = 2,
.cache_type = REGCACHE_FLAT,
};
static int sy8824_i2c_probe(struct i2c_client *client)
@ -134,7 +144,7 @@ static int sy8824_i2c_probe(struct i2c_client *client)
di->dev = dev;
di->cfg = of_device_get_match_data(dev);
regmap = devm_regmap_init_i2c(client, &sy8824_regmap_config);
regmap = devm_regmap_init_i2c(client, di->cfg->config);
if (IS_ERR(regmap)) {
dev_err(dev, "Failed to allocate regmap!\n");
return PTR_ERR(regmap);
@ -160,6 +170,7 @@ static const struct sy8824_config sy8824c_cfg = {
.vsel_min = 762500,
.vsel_step = 12500,
.vsel_count = 64,
.config = &sy8824_regmap_config,
};
static const struct sy8824_config sy8824e_cfg = {
@ -169,6 +180,7 @@ static const struct sy8824_config sy8824e_cfg = {
.vsel_min = 700000,
.vsel_step = 12500,
.vsel_count = 64,
.config = &sy8824_regmap_config,
};
static const struct sy8824_config sy20276_cfg = {
@ -178,6 +190,7 @@ static const struct sy8824_config sy20276_cfg = {
.vsel_min = 600000,
.vsel_step = 10000,
.vsel_count = 128,
.config = &sy20276_regmap_config,
};
static const struct sy8824_config sy20278_cfg = {
@ -187,6 +200,7 @@ static const struct sy8824_config sy20278_cfg = {
.vsel_min = 762500,
.vsel_step = 12500,
.vsel_count = 64,
.config = &sy20276_regmap_config,
};
static const struct of_device_id sy8824_dt_ids[] = {