[PATCH] INPUT:Add ABS_PRESSURE input event support for touchscreen driver

2011/6/27 Dmitry Torokhov [off-list ref]:

Baohua Song [off-list ref] wrote:

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-----Original Message-----
From: linux-arm-kernel-bounces at lists.infradead.org
[mailto:linux-arm-kernel-bounces at lists.infradead.org] On Behalf Of

daoguang

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wu
Sent: 2011?6?27? 10:15
To: Mark Brown
Cc: kgene.kim at samsung.com; ben-linux at fluff.org;
dmitry.torokhov at gmail.com; linux-kernel at vger.kernel.org;
wdgvip at gamil.com; linux-input at vger.kernel.org;
linux-arm-kernel at lists.infradead.org
Subject: Re: [PATCH] INPUT:Add ABS_PRESSURE input event support for
touchscreen driver

2011/6/24 Mark Brown [off-list ref]:

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On Fri, Jun 24, 2011 at 10:15:38AM +0800, Wu DaoGuang wrote:

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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

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the former two the driver can provide.

It seems much more sane to fix this in tslib, the kernel is not

actually

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reporting pressure meaningfully here and there's already BTN_TOUCH

to

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report if the pen is down.

yeah,I will try to fix it in tslib.

You may send a patch to tslib.

This has already been fixed in tslib a couple years ago. I'm not sure if a
new version was cut or not.
--
Dmitry

I try the latest tslib ,and find there is no such problem and the
latest version of tslib  can be downloaded from
git://github.com/kergoth/tslib.git.

Thanks a lot.