diff options
| author | Jisheng Zhang <Jisheng.Zhang@synaptics.com> | 2021-08-03 16:50:43 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-08-03 18:27:18 +0100 |
| commit | 784ed36958390c511cd48db061401f9ba20ba67a (patch) | |
| tree | 95b605cd725f83f9797dc5ef21cecb20158a7e20 /drivers/regulator/sy8824x.c | |
| parent | 15b4d2b972014b789f22d9267bcff1cc48153738 (diff) | |
| download | linux-784ed36958390c511cd48db061401f9ba20ba67a.tar.bz2 | |
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: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20210803165043.042ec24d@xhacker.debian
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/sy8824x.c')
| -rw-r--r-- | drivers/regulator/sy8824x.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/regulator/sy8824x.c b/drivers/regulator/sy8824x.c index 62d243f3b904..5e915cf307b3 100644 --- a/drivers/regulator/sy8824x.c +++ b/drivers/regulator/sy8824x.c @@ -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[] = { |