From: Peter Hutterer <peter.hutterer@who-t.net>
To: linux-input@vger.kernel.org
Subject: min/max and actual values on absolute axes
Date: Tue, 30 Jun 2009 09:42:58 +1000 [thread overview]
Message-ID: <20090629234258.GA30771@dingo.bne.redhat.com> (raw)
Hi guys,
A question regarding min/max values on absolute axes of input devices. I
have a few bugreports related to the synaptics driver and the trigger for
the bug are coordinates outside the min/max range.
Example evtest output: http://bugs.freedesktop.org/attachment.cgi?id=27229
Event type 3 (Absolute)
Event code 0 (X)
Value 6044
Min 1472
Max 5472
Event code 1 (Y)
Value 1261
Min 1408
Max 4448
>From Documentation/input/input-programming:
"This setting would be appropriate for a joystick X axis, with the minimum of
0, maximum of 255 (which the joystick *must* be able to reach, no problem if
it sometimes reports more, but it must be able to always reach the min and
max values), [...]"
Do I read this correct that min/max is intended as guideline only and cannot
be relied on for actual coordinate boundaries?
Cheers,
Peter
next reply other threads:[~2009-06-30 0:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-29 23:42 Peter Hutterer [this message]
2009-06-30 4:53 ` min/max and actual values on absolute axes Dmitry Torokhov
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