linux-kernel - RE: [PATCH] HID: input: enable Totem on the Dell Canvas 27

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Date:   Thu, 16 Nov 2017 01:26:31 +0000
From:   <Mario.Limonciello@...l.com>
To:     <peter.hutterer@...-t.net>
CC:     <benjamin.tissoires@...hat.com>, <dmitry.torokhov@...il.com>,
        <jikos@...nel.org>, <linux-input@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] HID: input: enable Totem on the Dell Canvas 27

> > > I had a chat with Peter this morning. TL;DR is I'll need to rework on
> > > this more heavily to provide the final version with MT axes, and skip
> > > the single device implementation. I have no ideas if the Dell Canvas
> > > can report more than one totem, but the report descriptor would say so,
> > > so we better have a proper implementation instead of having one for
> > > single device capable and one for multiple devices.
> >
> > The Canvas can only support one large totem at a time.
> 
> that's the current version but I doubt this will remain so for the upcoming
> years. We can support one totem through the MT protocol but it'll be hard to
> support multiple totems through the single touch protocol. So better safe
> than sorry.
> 

As I'm told the limitation is a function of what Windows 10 supports.