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regulator: mp886x: implement set_ramp_delay

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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>
This commit is contained in:
Jisheng Zhang 2020-07-29 13:09:13 +08:00 committed by Mark Brown
parent bcb3b2a763
commit 0eddcf0267
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 64 additions and 3 deletions
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67
drivers/regulator/mp886x.c
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@ -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
},
{ }
};