linux-kernel - Re: [PATCH 2/4] dt-bindings: touchscreen: add virtual-touchscreen and virtual-buttons properties

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Date:   Thu, 11 May 2023 11:45:28 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Javier Carrasco <javier.carrasco@...fvision.net>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Henrik Rydberg <rydberg@...math.org>,
        Bastian Hecht <hechtb@...il.com>,
        Michael Riesch <michael.riesch@...fvision.net>
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 2/4] dt-bindings: touchscreen: add virtual-touchscreen and
 virtual-buttons properties

On 10/05/2023 15:50, Javier Carrasco wrote:
> The virtual-touchscreen object defines an area within the touchscreen
> where touch events are reported and their coordinates get converted to
> the virtual origin. This object avoids getting events from areas that
> are physically hidden by overlay frames.
> 
> For touchscreens where overlay buttons on the touchscreen surface are
> provided, the virtual-buttons object contains a node for every button
> and the key event that should be reported when pressed.

Hm, I don't understand - are these separate physical buttons? If so, why
would they be part of touchscreen? Where do the wires go?

> 
> Signed-off-by: Javier Carrasco <javier.carrasco@...fvision.net>
> ---
>  .../bindings/input/touchscreen/touchscreen.yaml    | 54 ++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
> 

Best regards,
Krzysztof