From d092b6869817208326005df0a656e3bb9724d89f Mon Sep 17 00:00:00 2001 From: Julien Stephan Date: Wed, 31 Jul 2024 09:05:43 +0200 Subject: iio: core: add function to retrieve active_scan_mask index Add a function to retrieve the index of the active scan mask inside the available scan masks array. As in iio_scan_mask_match and iio_sanity_check_avail_scan_masks, this function does not handle multi-long masks correctly. It only checks the first long to be zero, and will use such mask as a terminator even if there was bits set after the first long. This should be fine since the available_scan_mask has already been sanity tested using iio_sanity_check_avail_scan_masks. See iio_scan_mask_match and iio_sanity_check_avail_scan_masks for more details Signed-off-by: Julien Stephan Reviewed-by: David Lechner Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-2-cd63bf05744c@baylibre.com Signed-off-by: Jonathan Cameron --- include/linux/iio/iio.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux') diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index f6c0499853bb..3a735a9a9eae 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -864,6 +864,8 @@ static inline unsigned int iio_get_masklength(const struct iio_dev *indio_dev) return ACCESS_PRIVATE(indio_dev, masklength); } +int iio_active_scan_mask_index(struct iio_dev *indio_dev); + /** * iio_for_each_active_channel - Iterated over active channels * @indio_dev: the IIO device -- cgit