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Message-Id: <20210913115121.300082-1-aardelean@deviqon.com>
Date: Mon, 13 Sep 2021 14:51:21 +0300
From: Alexandru Ardelean <aardelean@...iqon.com>
To: linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Cc: jic23@...nel.org, Alexandru Ardelean <aardelean@...iqon.com>
Subject: [PATCH] iio: dac: ad7303: convert probe to full device-managed
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@...iqon.com>
---
drivers/iio/dac/ad7303.c | 47 +++++++++++++++-------------------------
1 file changed, 17 insertions(+), 30 deletions(-)
diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c
index e1b6a92df12f..91eaaf793b3e 100644
--- a/drivers/iio/dac/ad7303.c
+++ b/drivers/iio/dac/ad7303.c
@@ -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);
--
2.31.1
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