linux-kernel - Re: [PATCH 00/20] cleanup atmel_mxt

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Message-ID: <4F68951E.2020601@itdev.co.uk>
Date:	Tue, 20 Mar 2012 07:33:02 -0700
From:	Nick Dyer <nick.dyer@...ev.co.uk>
To:	Daniel Kurtz <djkurtz@...omium.org>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Iiro Valkonen <iiro.valkonen@...el.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Benson Leung <bleung@...omium.org>,
	Yufeng Shen <miletus@...omium.org>,
	"Bowens, Alan" <Alan.Bowens@...el.com>,
	"Tiwari, Atul" <Atul.Tiwari@...el.com>
Subject: Re: [PATCH 00/20] cleanup atmel_mxt_ts

Daniel Kurtz wrote:
> This patchset cleans up the atmel_mxt_ts touchscreen driver.
> In particular, it addresses the following issues:

Hi Daniel-

Thanks for your work on this, some of it looks very useful. I will go
through and review each patch in turn.

I have been working on Atmel's version of this driver. You can find most of
that work on our github site: as you know we are intending to push it
upstream as much as possible:
https://github.com/atmel-maxtouch

The main overlap between your changes and ours is in your approach to
writing config from userspace. There is a lot of complexity in these chips
and providing a sysfs node for each function would end up being a
never-ending task.

So we have implemented an interface using a sysfs binary attribute which I
think is considerably more general and flexible than the interface that you
suggest. You can find a set of utilities on the same github that uses our
interface. I would argue that we should try and converge the mainline
driver on our approach rather than inventing something new unless there are
significant advantages.

cheers

-- 
Nick Dyer
Software Engineer, ITDev Ltd
Hardware and Software Development Consultancy
Website: http://www.itdev.co.uk
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