linux-kernel - Re: [PATCH 2/2] Input: tsc2007 - Add a z1_low

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Message-ID: <20111129092310.GB21758@core.coreip.homeip.net>
Date:	Tue, 29 Nov 2011 01:23:10 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Feng Tang <feng.tang@...el.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	kwlee@...kvision.com, joel.clark@...el.com
Subject: Re: [PATCH 2/2] Input: tsc2007 - Add a z1_low_threshhold platform
 data parameter

On Tue, Nov 29, 2011 at 04:12:58PM +0800, Feng Tang wrote:
> This originates from a patch in Meego IVI kernel with the name
> 	linux-2.6.37-connext-0027-tsc2007.patch
> There is no author info excepte a line "From  MeeGo <kernel@...go.com>"
> 
> When integrating tsc2007 on Intel IVI platform, there are a lot of noise
> data whose z1 value is around 10 which is not a sane "z1". So add
> a "z1_low_threshhold" to filter those nosie data, to make the device work
> properly.

Sounds like a task for userspace to ignore pressure that is too low. Bonus
points for making it configurable so user can adjust sensitivity.

Thanks.

-- 
Dmitry
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