diff options
author | Jisheng Zhang <Jisheng.Zhang@synaptics.com> | 2020-07-29 13:09:13 +0800 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2020-07-31 19:53:35 +0100 |
commit | 0eddcf0267f913cb6336af64cadaf5acf6b19b7b (patch) | |
tree | dd3485fa0d32ef185012d55e5d9a1997e0508633 /drivers | |
parent | bcb3b2a7639db2412875520cddc3abd179068793 (diff) |
regulator: mp886x: implement set_ramp_delay
Implement the .set_ramp_delay for MP8867 and MP8869. MP8867 and MP8869
could share the implementation, the only difference is the slew_rates
array.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Link: https://lore.kernel.org/r/20200729130913.3ac38b32@xhacker
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/regulator/mp886x.c | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/drivers/regulator/mp886x.c b/drivers/regulator/mp886x.c index d3d475f717f4..1305bf217df1 100644 --- a/drivers/regulator/mp886x.c +++ b/drivers/regulator/mp886x.c @@ -18,18 +18,48 @@ #define MP886X_V_BOOT (1 << 7) #define MP886X_SYSCNTLREG1 0x01 #define MP886X_MODE (1 << 0) +#define MP886X_SLEW_SHIFT 3 +#define MP886X_SLEW_MASK (0x7 << MP886X_SLEW_SHIFT) #define MP886X_GO (1 << 6) #define MP886X_EN (1 << 7) +struct mp886x_cfg_info { + const struct regulator_ops *rops; + const int slew_rates[8]; +}; + struct mp886x_device_info { struct device *dev; struct regulator_desc desc; struct regulator_init_data *regulator; struct gpio_desc *en_gpio; + const struct mp886x_cfg_info *ci; u32 r[2]; unsigned int sel; }; +static int mp886x_set_ramp(struct regulator_dev *rdev, int ramp) +{ + struct mp886x_device_info *di = rdev_get_drvdata(rdev); + const struct mp886x_cfg_info *ci = di->ci; + int reg = -1, i; + + for (i = 0; i < ARRAY_SIZE(ci->slew_rates); i++) { + if (ramp <= ci->slew_rates[i]) + reg = i; + else + break; + } + + if (reg < 0) { + dev_err(di->dev, "unsupported ramp value %d\n", ramp); + return -EINVAL; + } + + return regmap_update_bits(rdev->regmap, MP886X_SYSCNTLREG1, + MP886X_SLEW_MASK, reg << MP886X_SLEW_SHIFT); +} + static int mp886x_set_mode(struct regulator_dev *rdev, unsigned int mode) { switch (mode) { @@ -117,6 +147,21 @@ static const struct regulator_ops mp8869_regulator_ops = { .is_enabled = regulator_is_enabled_regmap, .set_mode = mp886x_set_mode, .get_mode = mp886x_get_mode, + .set_ramp_delay = mp886x_set_ramp, +}; + +static const struct mp886x_cfg_info mp8869_ci = { + .rops = &mp8869_regulator_ops, + .slew_rates = { + 40000, + 30000, + 20000, + 10000, + 5000, + 2500, + 1250, + 625, + }, }; static int mp8867_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel) @@ -173,6 +218,21 @@ static const struct regulator_ops mp8867_regulator_ops = { .is_enabled = regulator_is_enabled_regmap, .set_mode = mp886x_set_mode, .get_mode = mp886x_get_mode, + .set_ramp_delay = mp886x_set_ramp, +}; + +static const struct mp886x_cfg_info mp8867_ci = { + .rops = &mp8867_regulator_ops, + .slew_rates = { + 64000, + 32000, + 16000, + 8000, + 4000, + 2000, + 1000, + 500, + }, }; static int mp886x_regulator_register(struct mp886x_device_info *di, @@ -183,7 +243,7 @@ static int mp886x_regulator_register(struct mp886x_device_info *di, rdesc->name = "mp886x-reg"; rdesc->supply_name = "vin"; - rdesc->ops = of_device_get_match_data(di->dev); + rdesc->ops = di->ci->rops; rdesc->type = REGULATOR_VOLTAGE; rdesc->n_voltages = 128; rdesc->enable_reg = MP886X_SYSCNTLREG1; @@ -234,6 +294,7 @@ static int mp886x_i2c_probe(struct i2c_client *client) if (IS_ERR(di->en_gpio)) return PTR_ERR(di->en_gpio); + di->ci = of_device_get_match_data(dev); di->dev = dev; regmap = devm_regmap_init_i2c(client, &mp886x_regmap_config); @@ -258,11 +319,11 @@ static int mp886x_i2c_probe(struct i2c_client *client) static const struct of_device_id mp886x_dt_ids[] = { { .compatible = "mps,mp8867", - .data = &mp8867_regulator_ops + .data = &mp8867_ci }, { .compatible = "mps,mp8869", - .data = &mp8869_regulator_ops + .data = &mp8869_ci }, { } }; |