On Sun, Dec 13, 2020 at 02:15:45PM +0000, Jonathan Cameron wrote:
> On Mon, 7 Dec 2020 17:18:18 +0800
> "Ye, Xiang" <xiang.ye@xxxxxxxxx> wrote:
>
> > Hi Jonathan
> >
> > Thanks for review and comments.
> >
> > On Sat, Dec 05, 2020 at 04:05:40PM +0000, Jonathan Cameron wrote:
> > > On Thu, 3 Dec 2020 11:53:52 +0800
> > > Ye Xiang <xiang.ye@xxxxxxxxx> wrote:
> > >
> > > > Add channel description for hinge sensor, including channel label
> > > > attribute and raw data description.
> > > >
> > > > Signed-off-by: Ye Xiang <xiang.ye@xxxxxxxxx>
> > > > ---
> > > > Documentation/ABI/testing/sysfs-bus-iio | 17 +++++++++++++++++
> > > > 1 file changed, 17 insertions(+)
> > > >
> > > > diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> > > > index df42bed09f25..82303b1bdff0 100644
> > > > --- a/Documentation/ABI/testing/sysfs-bus-iio
> > > > +++ b/Documentation/ABI/testing/sysfs-bus-iio
> > > > @@ -1802,3 +1802,20 @@ Contact: linux-iio@xxxxxxxxxxxxxxx
> > > > Description:
> > > > Unscaled light intensity according to CIE 1931/DIN 5033 color space.
> > > > Units after application of scale are nano nanowatts per square meter.
> > > > +
> > > > +What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
> > > > +KernelVersion: 5.12
> > > > +Contact: linux-iio@xxxxxxxxxxxxxxx
> > > > +Description:
> > > > + Angle of rotation for channel Y. Units after application of scale
> > > > + and offset are radians.
> > >
> > > This entry is already mostly in the doc around line 200, just without the index.
> > > Please just add the What: line to that block to reduce repetition.
> > > If you want to add... "Where present, Y indexes the channel." or something like
> > > that feel free.
> > When adding in_anglY_raw to in_angl_raw block, Should I update the KernelVersion form
> > 4.17 to 5.12? Like blow:
> >
> > What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
> > What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
> > KernelVersion: 5.12
> > Contact: linux-iio@xxxxxxxxxxxxxxx
> > Description:
> > Angle of rotation. Units after application of scale and offset
> > are radians. Where present, Y indexes the channel.
>
> No. This is an unfortunate limitation of these files unless we keep duplicating
> nearly identical text.
>
> I'm not that worried about documenting an optional bit of ABI as apparently
> being in an earlier kernel than it actually was. That way any userspace
> will work. The other way around is more likely to cause problems.
Got it, then I will keep KernelVersion 4.17. will send the next version out
for review soon. Thanks again for the review.
>
> >
> > >
> > >
> > > > +
> > > > +What: /sys/bus/iio/devices/iio:deviceX/in_anglY_label
> > > > +KernelVersion: 5.12
> > > > +Contact: linux-iio@xxxxxxxxxxxxxxx
> > > > +Description:
> > > > + Optional symbolic label for channel Y.
> > > > + For Intel hid hinge sensor, the label values are:
> > > > + hinge, keyboard, screen. It means the three channels
> > > > + each correspond respectively to hinge angle, keyboard angle,
> > > > + and screen angle.
> > >
> > > Makes sense to keep this block separate given the additional info provided.
> > > Alternative would be to add it to the one with in_voltageY_label which would
> > > be odd given what follows!
> > Ok, Then I will keep the in_anglY_label block here. BTW, I didnot see in_voltageY_label
> > in sysfs-bus-iio in current kernel master branch.
> It was part of the series that added the support for per channel labels to the core.
> 3079188f821c ("iio:Documentation: Add documentation for label channel attribute")
> so will only going into current master in the merge window that will open shortly.
got it.
>
Thanks
Ye, Xiang
