linux-kernel - Re: [PATCH] Add tsc2007 based touchscreen driver.

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Message-ID: <483a38b80812032037j1ba5a78ay1630e83658dabe4@mail.gmail.com>
Date:	Thu, 4 Dec 2008 13:37:38 +0900
From:	"Kwangwoo Lee" <kwangwoo.lee@...il.com>
To:	"Trilok Soni" <soni.trilok@...il.com>
Cc:	dmitry.torokhov@...il.com, linux-kernel@...r.kernel.org,
	"David Brownell" <david-b@...bell.net>,
	"linux-omap@...r.kernel.org Mailing List" 
	<linux-omap@...r.kernel.org>
Subject: Re: [PATCH] Add tsc2007 based touchscreen driver.

On Wed, Dec 3, 2008 at 8:21 PM, Trilok Soni <soni.trilok@...il.com> wrote:
> Hi Lee
>
> Adding linux-omap mailing list. Sometime I am thinking that same chip
> might have interface to be connected on another board/cpu through SPI
> too, so in this case we will have two drivers doing the same thing and
> difference is  just a change of the bus interface.

Hi Soni,

At first, I tried to support tsc2007 with ads7846.c. But it required
some kind of
common logic to support both SPI and I2C for the driver, as you thought.

If I modified the ads7846.c to support tsc2007, the driver might be a
bit more complicate.
I do not know which method is better, but making a different driver
was simppler for me.

Thank you.

> We should do something v4l2_subdev framework right now going on on
> v4l2 mailing list to abstract the sensor drivers from bus.
>

-- 
Kwangwoo Lee <kwangwoo.lee@...il.com>
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