linux-kernel - Re: [PATCH] HID: Wacom: switch Dell canvas into highres mode

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Message-ID: <20171106080503.GB9728@mail.corp.redhat.com>
Date:   Mon, 6 Nov 2017 09:05:03 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Jason Gerecke <killertofu@...il.com>
Cc:     Jiri Kosina <jikos@...nel.org>, Ping Cheng <pinglinux@...il.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: Wacom: switch Dell canvas into highres mode

Hi Jason,

On Nov 03 2017 or thereabouts, Jason Gerecke wrote:
> On November 3, 2017 10:29:47 AM PDT, Benjamin Tissoires <benjamin.tissoires@...hat.com> wrote:
> >The Dell Canvas exports 2 collections for the Pen part. The only
> >difference between the 2 is that the default one has half the
> >resolution
> >of the second one.
> >
> >The Windows driver switches the tablet into the second mode, so we
> >should
> >behave the same.
> >
> >Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> >---
> >
> >Hi,
> >
> >well, this is not the cleanest way of handling this mode set, but it is
> >the
> >less intrusive AFAICT.
> >
> >I was thinking that we might want to add a new field in struct
> >wacom_feature,
> >but then it wouldn't make sense to keep the set mode specifics in
> >_wacom_query_tablet_data().
> >
> >So I am open to any better suggestion, but this one works and the
> >impact on
> >other HID generic tablets is null.
> >
> 
> Hmm. Agreed that this isn't ideal. I'd like to take a look at the descriptor, if you wouldn't mind sharing it. The hardware should be similar to other devices of ours and it might be possible to piggyback on existing code.
>

Sure, here it comes in the hid-replay format (and with a recording
of a single dot from the pen):

Cheers,
Benjamin

---

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