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proximity: vl53l0x: Handle the VDD regulator

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Handle the regulator supplying the VDD pin of VL53L0X.

Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Link: https://lore.kernel.org/r/20220523175344.5845-4-markuss.broks@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Markuss Broks 2022-05-23 20:53:42 +03:00 • committed by Jonathan Cameron
parent 76d1eb09eb
commit d3d6dba56d
1 changed files with 37 additions and 0 deletions
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37
drivers/iio/proximity/vl53l0x-i2c.c
View file

@ -43,6 +43,7 @@
struct vl53l0x_data { struct vl53l0x_data {
struct i2c_client *client; struct i2c_client *client;
struct completion completion; struct completion completion;
struct regulator *vdd_supply;
}; };
static irqreturn_t vl53l0x_handle_irq(int irq, void *priv) static irqreturn_t vl53l0x_handle_irq(int irq, void *priv)
@ -191,10 +192,31 @@ static const struct iio_info vl53l0x_info = {
.read_raw = vl53l0x_read_raw, .read_raw = vl53l0x_read_raw,
}; };
static void vl53l0x_power_off(void *_data)
{
struct vl53l0x_data *data = _data;
regulator_disable(data->vdd_supply);
}
static int vl53l0x_power_on(struct vl53l0x_data *data)
{
int ret;
ret = regulator_enable(data->vdd_supply);
if (ret)
return ret;
usleep_range(3200, 5000);
return 0;
}
static int vl53l0x_probe(struct i2c_client *client) static int vl53l0x_probe(struct i2c_client *client)
{ {
struct vl53l0x_data *data; struct vl53l0x_data *data;
struct iio_dev *indio_dev; struct iio_dev *indio_dev;
int error;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev) if (!indio_dev)
@ -209,6 +231,21 @@ static int vl53l0x_probe(struct i2c_client *client)
I2C_FUNC_SMBUS_BYTE_DATA)) I2C_FUNC_SMBUS_BYTE_DATA))
return -EOPNOTSUPP; return -EOPNOTSUPP;
data->vdd_supply = devm_regulator_get_optional(&client->dev, "vdd");
if (IS_ERR(data->vdd_supply))
return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply),
"Unable to get VDD regulator\n");
error = vl53l0x_power_on(data);
if (error)
return dev_err_probe(&client->dev, error,
"Failed to power on the chip\n");
error = devm_add_action_or_reset(&client->dev, vl53l0x_power_off, data);
if (error)
return dev_err_probe(&client->dev, error,
"Failed to install poweroff action\n");
indio_dev->name = "vl53l0x"; indio_dev->name = "vl53l0x";
indio_dev->info = &vl53l0x_info; indio_dev->info = &vl53l0x_info;
indio_dev->channels = vl53l0x_channels; indio_dev->channels = vl53l0x_channels;