From: Rolf Eike Beer <eike-kernel@sf-tec.de>
To: linux-input@vger.kernel.org
Subject: ABS_PRESSURE and 0 ranges
Date: Thu, 25 Oct 2012 14:59:49 +0200 [thread overview]
Message-ID: <2119530.D54ZbrWB3u@devpool02> (raw)
Hi all,
as I found out the hard way tslib does the detection if a touchscreen has been
"clicked" if the kernel driver says it does not support ABS_PRESSURE. But when
the kernel says it can do ABS_PRESSURE tslib will not do it's emulation and
just pass on whatever pressure value the kernel sends.
So far, so good. Sadly there are some drivers that do:
input_set_abs_params(dev, ABS_PRESSURE, 0, 0, 0, 0);
Guess what happens: no clicks at all. The question I have is: does the above
line make any sense to be in a kernel driver at all? Or is that some voodoo
that must be there and it's all tslib fault?
Now that I know where the problem is coming from the problem is easily
fixable, I'm just wondering which patch to make.
Greetings,
Eike
next reply other threads:[~2012-10-25 12:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-25 12:59 Rolf Eike Beer [this message]
2012-10-25 18:34 ` ABS_PRESSURE and 0 ranges Dmitry Torokhov
2012-10-25 20:11 ` Rolf Eike Beer
2012-10-25 20:51 ` Dmitry Torokhov
2012-10-25 21:45 ` Rolf Eike Beer
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