iio: adc: ad_sigma_delta: remove ad_sd_{setup,cleanup}_buffer_and_trigger()

Since all AD Sigma-Delta drivers now use the
devm_ad_sd_setup_buffer_and_trigger() function, we can remove the old
ad_sd_{setup,cleanup}_buffer_and_trigger() functions.

This way we can discourage new drivers that use the ad_sigma_delta
lib-driver to use these (older functions).
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210513120752.90074-13-aardelean@deviqon.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/ad_sigma_delta.c

@@ -470,49 +470,6 @@ EXPORT_SYMBOL_GPL(ad_sd_validate_trigger);
 static const struct iio_trigger_ops ad_sd_trigger_ops = {
 };
 
-static int ad_sd_probe_trigger(struct iio_dev *indio_dev)
-{
-	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
-	int ret;
-
-	sigma_delta->trig = iio_trigger_alloc(&sigma_delta->spi->dev,
-					      "%s-dev%d", indio_dev->name,
-					      iio_device_id(indio_dev));
-	if (sigma_delta->trig == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	sigma_delta->trig->ops = &ad_sd_trigger_ops;
-	init_completion(&sigma_delta->completion);
-
-	sigma_delta->irq_dis = true;
-	ret = request_irq(sigma_delta->spi->irq,
-			  ad_sd_data_rdy_trig_poll,
-			  sigma_delta->info->irq_flags | IRQF_NO_AUTOEN,
-			  indio_dev->name,
-			  sigma_delta);
-	if (ret)
-		goto error_free_trig;
-
-	iio_trigger_set_drvdata(sigma_delta->trig, sigma_delta);
-
-	ret = iio_trigger_register(sigma_delta->trig);
-	if (ret)
-		goto error_free_irq;
-
-	/* select default trigger */
-	indio_dev->trig = iio_trigger_get(sigma_delta->trig);
-
-	return 0;
-
-error_free_irq:
-	free_irq(sigma_delta->spi->irq, sigma_delta);
-error_free_trig:
-	iio_trigger_free(sigma_delta->trig);
-error_ret:
-	return ret;
-}
-
 static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
@@ -553,49 +510,6 @@ static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_de
 	return 0;
 }
 
-static void ad_sd_remove_trigger(struct iio_dev *indio_dev)
-{
-	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
-
-	iio_trigger_unregister(sigma_delta->trig);
-	free_irq(sigma_delta->spi->irq, sigma_delta);
-	iio_trigger_free(sigma_delta->trig);
-}
-
-/**
- * ad_sd_setup_buffer_and_trigger() -
- * @indio_dev: The IIO device
- */
-int ad_sd_setup_buffer_and_trigger(struct iio_dev *indio_dev)
-{
-	int ret;
-
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-			&ad_sd_trigger_handler, &ad_sd_buffer_setup_ops);
-	if (ret)
-		return ret;
-
-	ret = ad_sd_probe_trigger(indio_dev);
-	if (ret) {
-		iio_triggered_buffer_cleanup(indio_dev);
-		return ret;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ad_sd_setup_buffer_and_trigger);
-
-/**
- * ad_sd_cleanup_buffer_and_trigger() -
- * @indio_dev: The IIO device
- */
-void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev)
-{
-	ad_sd_remove_trigger(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-EXPORT_SYMBOL_GPL(ad_sd_cleanup_buffer_and_trigger);
-
 /**
  * devm_ad_sd_setup_buffer_and_trigger() - Device-managed buffer & trigger setup
  * @dev: Device object to which to bind the life-time of the resources attached

include/linux/iio/adc/ad_sigma_delta.h

@@ -133,9 +133,6 @@ int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,
 int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,
 	struct spi_device *spi, const struct ad_sigma_delta_info *info);
 
-int ad_sd_setup_buffer_and_trigger(struct iio_dev *indio_dev);
-void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev);
-
 int devm_ad_sd_setup_buffer_and_trigger(struct device *dev, struct iio_dev *indio_dev);
 
 int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig);