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iio: adc: ad7793: convert to device-managed functions
With the devm_ad_sd_setup_buffer_and_trigger() helper, it's a bit easier now to convert the probe of the AD7793 driver to use device-managed functions. Only the regulator disable requires a devm_add_action_or_reset() callback. This change does that, cleaning up the driver a bit. Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com> Link: https://lore.kernel.org/r/20210513120752.90074-7-aardelean@deviqon.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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parent
718fb2bcf1
commit
801a80eff4
1 changed files with 15 additions and 38 deletions
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@ -769,6 +769,11 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
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},
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};
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static void ad7793_reg_disable(void *reg)
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{
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regulator_disable(reg);
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}
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static int ad7793_probe(struct spi_device *spi)
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{
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const struct ad7793_platform_data *pdata = spi->dev.platform_data;
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@ -803,11 +808,13 @@ static int ad7793_probe(struct spi_device *spi)
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if (ret)
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return ret;
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ret = devm_add_action_or_reset(&spi->dev, ad7793_reg_disable, st->reg);
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if (ret)
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return ret;
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vref_mv = regulator_get_voltage(st->reg);
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if (vref_mv < 0) {
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ret = vref_mv;
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goto error_disable_reg;
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}
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if (vref_mv < 0)
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return vref_mv;
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vref_mv /= 1000;
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} else {
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@ -817,50 +824,21 @@ static int ad7793_probe(struct spi_device *spi)
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st->chip_info =
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&ad7793_chip_info_tbl[spi_get_device_id(spi)->driver_data];
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spi_set_drvdata(spi, indio_dev);
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indio_dev->name = spi_get_device_id(spi)->name;
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indio_dev->modes = INDIO_DIRECT_MODE;
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indio_dev->channels = st->chip_info->channels;
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indio_dev->num_channels = st->chip_info->num_channels;
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indio_dev->info = st->chip_info->iio_info;
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ret = ad_sd_setup_buffer_and_trigger(indio_dev);
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ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
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if (ret)
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goto error_disable_reg;
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return ret;
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ret = ad7793_setup(indio_dev, pdata, vref_mv);
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if (ret)
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goto error_remove_trigger;
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return ret;
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ret = iio_device_register(indio_dev);
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if (ret)
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goto error_remove_trigger;
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return 0;
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error_remove_trigger:
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ad_sd_cleanup_buffer_and_trigger(indio_dev);
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error_disable_reg:
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if (pdata->refsel != AD7793_REFSEL_INTERNAL)
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regulator_disable(st->reg);
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return ret;
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}
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static int ad7793_remove(struct spi_device *spi)
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{
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const struct ad7793_platform_data *pdata = spi->dev.platform_data;
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struct iio_dev *indio_dev = spi_get_drvdata(spi);
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struct ad7793_state *st = iio_priv(indio_dev);
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iio_device_unregister(indio_dev);
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ad_sd_cleanup_buffer_and_trigger(indio_dev);
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if (pdata->refsel != AD7793_REFSEL_INTERNAL)
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regulator_disable(st->reg);
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return 0;
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return devm_iio_device_register(&spi->dev, indio_dev);
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}
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static const struct spi_device_id ad7793_id[] = {
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@ -882,7 +860,6 @@ static struct spi_driver ad7793_driver = {
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.name = "ad7793",
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},
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.probe = ad7793_probe,
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.remove = ad7793_remove,
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.id_table = ad7793_id,
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};
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module_spi_driver(ad7793_driver);
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