linux-kernel - Re: [PATCH v3 0/4] input: ft5x06: Fix userspace reported maximum value

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Message-ID: <20150324001002.GJ15676@lukather>
Date:	Mon, 23 Mar 2015 17:10:02 -0700
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Lothar Waßmann <LW@...O-electronics.de>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>
Cc:	linux-input@...r.kernel.org, Markus Pargmann <mpa@...gutronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/4] input: ft5x06: Fix userspace reported maximum
 value

Hi Lothar, Dmitry,

On Tue, Mar 03, 2015 at 02:50:42PM +0100, Maxime Ripard wrote:
> Hi,
> 
> The current ft5x06 reports to the user-space that its maximum
> coordinates are, on both X and Y, way higher than what could be
> actually usable on the screen (in my case, 5759x1151 instead of
> 480x800).
> 
> This causes trouble on some userspace stacks that then try to re-scale
> these coordinates back to the framebuffer resolution, like QT does.
> 
> Use the of_touchscreen code to find the real touchscreen limits in the
> DT case, and report that to the userspace.

Do you have any comments on that?

Thanks,
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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