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iio: dac: ad7303: convert probe to full device-managed

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For this conversion, the regulators need to have some cleanup hooks
registered with devm_add_action_or_reset() and then the
devm_io_device_register() call can be used.

Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210913115121.300082-1-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2021-09-13 14:51:21 +03:00 committed by Jonathan Cameron
parent 3b38706466
commit 8a16c76e23
1 changed files with 17 additions and 30 deletions
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47
drivers/iio/dac/ad7303.c
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@ -198,6 +198,11 @@ static const struct iio_chan_spec ad7303_channels[] = {
AD7303_CHANNEL(1),
};
static void ad7303_reg_disable(void *reg)
{
regulator_disable(reg);
}
static int ad7303_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
@ -210,7 +215,6 @@ static int ad7303_probe(struct spi_device *spi)
return -ENOMEM;
st = iio_priv(indio_dev);
spi_set_drvdata(spi, indio_dev);
st->spi = spi;
@ -224,18 +228,27 @@ static int ad7303_probe(struct spi_device *spi)
if (ret)
return ret;
ret = devm_add_action_or_reset(&spi->dev, ad7303_reg_disable, st->vdd_reg);
if (ret)
return ret;
st->vref_reg = devm_regulator_get_optional(&spi->dev, "REF");
if (IS_ERR(st->vref_reg)) {
ret = PTR_ERR(st->vref_reg);
if (ret != -ENODEV)
goto err_disable_vdd_reg;
return ret;
st->vref_reg = NULL;
}
if (st->vref_reg) {
ret = regulator_enable(st->vref_reg);
if (ret)
goto err_disable_vdd_reg;
return ret;
ret = devm_add_action_or_reset(&spi->dev, ad7303_reg_disable,
st->vref_reg);
if (ret)
return ret;
st->config |= AD7303_CFG_EXTERNAL_VREF;
}
@ -246,32 +259,7 @@ static int ad7303_probe(struct spi_device *spi)
indio_dev->channels = ad7303_channels;
indio_dev->num_channels = ARRAY_SIZE(ad7303_channels);
ret = iio_device_register(indio_dev);
if (ret)
goto err_disable_vref_reg;
return 0;
err_disable_vref_reg:
if (st->vref_reg)
regulator_disable(st->vref_reg);
err_disable_vdd_reg:
regulator_disable(st->vdd_reg);
return ret;
}
static int ad7303_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7303_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
if (st->vref_reg)
regulator_disable(st->vref_reg);
regulator_disable(st->vdd_reg);
return 0;
return devm_iio_device_register(&spi->dev, indio_dev);
}
static const struct of_device_id ad7303_spi_of_match[] = {
@ -292,7 +280,6 @@ static struct spi_driver ad7303_driver = {
.of_match_table = ad7303_spi_of_match,
},
.probe = ad7303_probe,
.remove = ad7303_remove,
.id_table = ad7303_spi_ids,
};
module_spi_driver(ad7303_driver);