diff options
| author | Rodrigo Alencar <rodrigo.alencar@analog.com> | 2026-07-29 09:25:35 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jonathan.cameron@oss.qualcomm.com> | 2026-09-23 02:53:57 +0100 |
| commit | ef7fcf86cc65822ca091adda6e865a1bfbbd99de (patch) | |
| tree | a8fd53fbb721897bd785e8a7f268aeb74d1487a2 /include | |
| parent | b9f9044be76f8494ff48bbf438ecc5b15e7bd3d4 (diff) | |
| download | linux-next-ef7fcf86cc65822ca091adda6e865a1bfbbd99de.tar.gz linux-next-ef7fcf86cc65822ca091adda6e865a1bfbbd99de.zip | |
iio: core: add hierarchical channel relationships
Add parent-child relationship between iio channels by creating a parent
pointer field in iio_chan_spec struct and exposing a sysfs attribute that
returns the parent channel prefix.
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iio/iio.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index c227e292aaf1..7c751e117ccc 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -264,6 +264,10 @@ struct iio_scan_type { * @ext_info: Array of extended info attributes for this channel. * The array is NULL terminated, the last element should * have its name field set to NULL. + * @parent: Optional pointer to the parent channel spec for + * hierarchical channel relationships. When set, a read-only + * "parent" sysfs attribute is created containing the + * parent channel's sysfs name prefix (e.g. "in_voltage0"). * @extend_name: Allows labeling of channel attributes with an * informative name. Note this has no effect codes etc, * unlike modifiers. @@ -309,6 +313,7 @@ struct iio_chan_spec { const struct iio_event_spec *event_spec; unsigned int num_event_specs; const struct iio_chan_spec_ext_info *ext_info; + const struct iio_chan_spec *parent; const char *extend_name; const char *datasheet_name; unsigned int modified:1; |