linux-kernel - Re: [PATCH] Input: zinitix - Don't fail if linux,keycodes prop is absent

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Message-ID: <CACRpkda99fSxMbuQPsTqinJFxN8F07o94YFM5deSMGGDb+2_4g@mail.gmail.com>
Date: Wed, 2 Oct 2024 23:20:41 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: Nikita Travkin <nikita@...n.ru>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>, linux-input@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Jakob Hauser <jahau@...ketmail.com>
Subject: Re: [PATCH] Input: zinitix - Don't fail if linux,keycodes prop is absent

On Wed, Oct 2, 2024 at 4:48 PM Nikita Travkin <nikita@...n.ru> wrote:

> > BTW: Nikita have you noticed and weird offsets in your Zinitix
> > touchscreens? Mine seem to be off and I need to put my
> > fingers a bit below the actual target on the screen, consistently.
> > I was thinking maybe calibration support is necessary.
>
> I for sure noticed this in the context of touchkeys: On the device I
> have, if you don't enable the touchkeys, the controller assigns
> the lines connected to them to the touch grid, which offsets
> the real touchscreen by two lines. Effectively this means that
> touch surface is stretched a bit below the screen, and i.e. touching
> at the very bottom will produce a touch event a bit above
> the actual touch point. Enabling touchkeys reassigns those lines
> and then the display is working correctly.
>
> This was the prime reason why I've even made the tkey series in
> the first place :D

It's embarrassing that I was so focused on just testing the touchkey
support to not notice that it actually fixes this issue for me too :D

Excellent, two problems solved.

Yours,
Linus Walleij