linux-kernel - RE: [PATCH] i2c: cyttsp i2c and spi touchscreen driver init submit

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Message-ID: <FB9C2CB29A07AB45B575A4E8D2AABC09C4882D@labamba.mis.cypress.com>
Date:	Mon, 9 Aug 2010 17:51:18 -0700
From:	"Kevin McNeely" <Kevin.McNeely@...ress.com>
To:	"Henrik Rydberg" <rydberg@...omail.se>
Cc:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>,
	"David Brown" <davidb@...eaurora.org>,
	"Trilok Soni" <tsoni@...eaurora.org>,
	"Fred" <fwk@...ntu.linuxcertified.com>,
	"Samuel Ortiz" <sameo@...ux.intel.com>,
	"Eric Miao" <eric.y.miao@...il.com>,
	"Ben Dooks" <ben-linux@...ff.org>,
	"Simtec Linux Team" <linux@...tec.co.uk>,
	"Todd Fischer" <todd.fischer@...gerun.com>,
	"Arnaud Patard" <arnaud.patard@...-net.org>,
	"Sascha Hauer" <s.hauer@...gutronix.de>,
	<linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] i2c: cyttsp i2c and spi touchscreen driver init submit

Hi Henrik,

> -----Original Message-----
> From: Henrik Rydberg [mailto:rydberg@...omail.se]
> Sent: Friday, August 06, 2010 5:49 PM
> To: Kevin McNeely
> Cc: Dmitry Torokhov; David Brown; Trilok Soni; Fred; Samuel Ortiz;
Eric
> Miao; Ben Dooks; Simtec Linux Team; Todd Fischer; Arnaud Patard;
Sascha
> Hauer; linux-input@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH] i2c: cyttsp i2c and spi touchscreen driver init
> submit
> 
> On 08/07/2010 02:32 AM, Kevin McNeely wrote:
> 
> [...]
> 
> > However, I would like to keep the MT Protocol A.  Our solution
allows
> 
> > The platform builder to select to use MT protocol B or not as part
of
> > platform_data in the board configuration. If it makes more sense,
> > I can reverse the code to default to protocol B and allow the
> platform
> > builder developer to select protocol A.
> 
> 
> There is nothing preventing you from keeping say a dkms package
> somewhere with
> all options intact. However, for the kernel, it is a question of
> maintainability. If the driver can produce prefectly valid data using
> protocol
> B, and by doing so several hundred lines of code can be removed, that
> is very
> much preferred. Since both protocols can be translated to protocol B
> via mtdev,
> which is already very much in use, there is little reason to support
> protocol A
> when the device can do tracking.

I will remove the Protocol A.

Thank you again for your review.
-kevin

> 
> Thanks,
> Henrik

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