linux-kernel - Re: [PATCH V2] Add the support of the touchscreen keypad of tsc2007 .

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Date:	Thu, 31 Mar 2011 09:49:04 +0100
From:	Richard Purdie <richard.purdie@...uxfoundation.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	wanlong.gao@...il.com, w.sang@...gutronix.de,
	broonie@...nsource.wolfsonmicro.com, khali@...ux-fr.org,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	jiaweiwei.xiyou@...il.com
Subject: Re: [PATCH V2] Add the support of the touchscreen keypad of
 tsc2007 .

On Wed, 2011-03-30 at 22:33 -0700, Dmitry Torokhov wrote:
> Hi Wanlong,
> 
> On Sun, Mar 27, 2011 at 05:46:32PM +0800, wanlong.gao@...il.com wrote:
> > From: Wanlong Gao <wanlong.gao@...il.com>
> > 
> > Many touchscreens support touch-keypad .
> > Open the definition of the TOUCHSCREEN_TSC2007_WITH_KEYPAD, you can
> > open the support of the touchscreen's keypad .
> > We can add the support of the touchscreen keypad in the driver.
> > In this patch , add the ts_key_pos array to determine the position
> > of the key's X. And the ts_key_sensitivity can use to detemine the
> > key's sensitivity. You can modify the ts_key_pos array for you own
> > touchscreen keys . And modify the ts_key_sensitivity for you own
> > key's sensitivity .
> > If you want to modify the ts_key_map, change the position of the
> > keys ,too.
> 
> No, this kind of data transformation does not belong to a driver (or,
> really in kernel). It is in no way TSC2007 specific (any touchscreen
> could be used in place of TSC2007 here).
> 
> Do it in userspace and either loop the events back into kernel (after
> parsing) via uinput or feed directly into your framework.

There is even code out there already which does exactly that:

http://svn.o-hand.com/view/misc/trunk/zaurusd/apps/tskeys/tskeys.c?rev=415&view=markup

Cheers,

Richard

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