From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Arjan Opmeer <arjan@opmeer.net>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] input: elantech.c make sure touchpad is really in absolute mode
Date: Fri, 20 Mar 2009 22:46:31 -0700 [thread overview]
Message-ID: <200903202246.31493.dmitry.torokhov@gmail.com> (raw)
In-Reply-To: <20090320055239.GA19800@adopmeer.homeip.net>
Hi Arjan,
On Thursday 19 March 2009 22:52:39 Arjan Opmeer wrote:
> From: Arjan Opmeer <arjan@opmeer.net>
>
> There exist laptops with Elantech touchpads where switching to absolute
> mode does not happen, although writing the configuration register succeeds
> without error. Reading back the register afterwards reveils that the
> absolute mode bit is not set as if masked out by the touchpad firmware.
>
> Always read back register 0x10, make sure that for hardware version 1 the
> absolute mode bit is actually set and fail otherwise. This prevents the
> case where the touchpad is claimed by the Elantech driver but is
> nonetheless not working.
>
Makes sense, will apply. Although, have you tried repeating the switch or
maybe issuing full reset before trying again?
--
Dmitry
next prev parent reply other threads:[~2009-03-21 5:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-20 5:52 [PATCH] input: elantech.c make sure touchpad is really in absolute mode Arjan Opmeer
2009-03-21 5:46 ` Dmitry Torokhov [this message]
2009-03-21 12:04 ` Arjan Opmeer
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