Commit 9415c8b5 authored by David Lechner's avatar David Lechner Committed by Jonathan Cameron
Browse files

iio: adc: ad4030: explain rearranging raw sample data 



Add a comment explaining why the raw sample data is rearranged in the
in the ad4030_conversion() function. It is not so obvious from the code
why this is done.

Signed-off-by: default avatarDavid Lechner <dlechner@baylibre.com>
Reviewed-by: default avatarNuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20250310-iio-adc-ad4030-check-scan-type-err-v1-5-589e4ebd9711@baylibre.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 15ffee89

drivers/iio/adc/ad4030.c

+6 −0
Original line number Diff line number Diff line
@@ -646,6 +646,12 @@ static int ad4030_conversion(struct iio_dev *indio_dev) 
					   &st->rx_data.dual.diff[0],

					   &st->rx_data.dual.diff[1]);



	/*

	 * If no common mode voltage channel is enabled, we can use the raw

	 * data as is. Otherwise, we need to rearrange the data a bit to match

	 * the natural alignment of the IIO buffer.

	 */



	if (st->mode != AD4030_OUT_DATA_MD_16_DIFF_8_COM &&

	    st->mode != AD4030_OUT_DATA_MD_24_DIFF_8_COM)

		return 0;