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    SubjectRe: [v2 03/10] iio: document euler angles modifiers
    Il giorno gio 28 ott 2021 alle ore 12:37 Jonathan Cameron
    <jic23@kernel.org> ha scritto:
    >
    > On Thu, 28 Oct 2021 12:18:33 +0200
    > Andrea Merello <andrea.merello@gmail.com> wrote:
    >
    > > This patch introduces ABI documentation for new modifiers used for
    > > reporting rotations expressed as euler angles (i.e. yaw, pitch, roll).
    > >
    > > Signed-off-by: Andrea Merello <andrea.merello@iit.it>
    > > ---
    > > Documentation/ABI/testing/sysfs-bus-iio | 8 ++++++++
    > > 1 file changed, 8 insertions(+)
    > >
    > > diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
    > > index 5147a00bf24a..f0adc2c817bd 100644
    > > --- a/Documentation/ABI/testing/sysfs-bus-iio
    > > +++ b/Documentation/ABI/testing/sysfs-bus-iio
    > > @@ -1965,3 +1965,11 @@ KernelVersion: 5.15
    > > Contact: linux-iio@vger.kernel.org
    > > Description:
    > > Raw (unscaled) linear acceleration readings.
    > > +
    > > +What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
    > > +What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
    > > +What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw
    > > +KernelVersion: 5.15
    > > +Contact: linux-iio@vger.kernel.org
    > > +Description:
    > > + Raw (unscaled) euler angles readings.
    > Any _raw entry should also include what the units are after application of
    > offset and scale. Or you could just add this as more info to the in_rot_raw
    > block as an extra sentence explaining that they are euler angles.
    > That will lose the 'KernelVersion' information but honestly I'm not sure we
    > care that much about that.

    I'm unsure which block you are talking about: I see there are two
    blocks that refer to rot things: in_rot_quaternion_raw and
    in_rot_from_north_xxx_raw.

    Looking at the 1st one description, it looks very specific to
    quaternions to me; the 2nd seems very specific to its own thing,
    whatever it is.. So I would just add the missing information (unit) in
    the new block just being introduced, if this is ok for you. Or am I
    missing some other block in which I could coalesce this new euler
    thing?


    > Jonathan
    >
    >

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