linux-kernel - Re: [PATCH] INPUT:Add ABS_PRESSURE input event support for touchscreen driver

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Message-ID: <20110624124154.GC19804@sirena.org.uk>
Date:	Fri, 24 Jun 2011 13:41:55 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Wu DaoGuang <wdgvip@...il.com>
Cc:	ben-linux@...ff.org, kgene.kim@...sung.com,
	dmitry.torokhov@...il.com, wdgvip@...il.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-input@...r.kernel.org
Subject: Re: [PATCH] INPUT:Add ABS_PRESSURE input event support for
	touchscreen driver

On Fri, Jun 24, 2011 at 10:15:38AM +0800, Wu DaoGuang wrote:
> The touchscreen driver s3c2410_ts.c doesn't work well when using
> the tslib, an abstraction layer for touchscreen panel events.
> Tslib needs ABS_X ABS_Y and ABS_PRESSURE events to report, but only
> the former two the driver can provide.

It seems much more sane to fix this in tslib, the kernel is not actually
reporting pressure meaningfully here and there's already BTN_TOUCH to
report if the pen is down.
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