Unverified Commit 784ed369 authored by Jisheng Zhang's avatar Jisheng Zhang Committed by Mark Brown
Browse files

regulator: sy8824x: Enable REGCACHE_FLAT 



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: default avatarJisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20210803165043.042ec24d@xhacker.debian


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 15b4d2b9

drivers/regulator/sy8824x.c

+15 −1
Original line number Diff line number Diff line
@@ -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[] = {