Re: [Xen-devel] [PATCH v2 2/2] xen/kbdif: add multi-touch support

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Jan 26, 2017 at 09:46:47AM +0200, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> 

Usually you say a bit in the description of what it does and
what's its usage is.

Like:

"Multi-touch fields re-use the page that is used by the other features
which means that you can interleave multi-touch, motion, and key
events."

Along with:

---
v2: Added 'mt' in front of XenBus entries
    Dropped 'mtouch' subdirectory.
.. etc.

> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> ---
>  xen/include/public/io/kbdif.h | 210 
> ++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 210 insertions(+)
> 
> diff --git a/xen/include/public/io/kbdif.h b/xen/include/public/io/kbdif.h
> index 446aed2478b5..74883267d6e6 100644
> --- a/xen/include/public/io/kbdif.h
> +++ b/xen/include/public/io/kbdif.h
> @@ -57,6 +57,12 @@
>   *      Backends, which support reporting of absolute coordinates for pointer
>   *      device should set this to 1.
>   *
> + * feature-multi-touch
> + *      Values:         <uint>
> + *
> + *      Backends, which support reporting of multi-touch events
> + *      should set this to 1.
> + *
>   *------------------------- Pointer Device Parameters 
> ------------------------
>   *
>   * width
> @@ -87,6 +93,11 @@
>   *      Request backend to report absolute pointer coordinates
>   *      (XENKBD_TYPE_POS) instead of relative ones (XENKBD_TYPE_MOTION).
>   *
> + * request-multi-touch
> + *      Values:         <uint>
> + *
> + *      Request backend to report multi-touch events.
> + *
>   *----------------------- Request Transport Parameters 
> -----------------------
>   *
>   * event-channel
> @@ -106,6 +117,25 @@
>   *
>   *      OBSOLETE, not recommended for use.
>   *      PFN of the shared page.
> + *
> + *----------------------- Multi-touch Device Parameters 
> -----------------------
> + *
> + * mt-num-contacts

s/mt/multi-touch/ please for all of the entries.


> + *      Values:         <uint>
> + *
> + *      Number of simultaneous touches reported.
> + *
> + * mt-width
> + *      Values:         <uint>
> + *
> + *      Width of the touch area to be used by the frontend
> + *      while reporting input events, pixels, [0; UINT32_MAX].
> + *
> + * mt-height
> + *      Values:         <uint>
> + *
> + *      Height of the touch area to be used by the frontend
> + *      while reporting input events, pixels, [0; UINT32_MAX].
>   */

... And I think that is it!

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