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

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Date:	Thu, 4 Dec 2008 11:37:15 +0200
From:	Felipe Balbi <felipe.balbi@...ia.com>
To:	ext Kwangwoo Lee <kwangwoo.lee@...il.com>
Cc:	felipe.balbi@...ia.com, ext Trilok Soni <soni.trilok@...il.com>,
	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 Thu, Dec 04, 2008 at 02:07:30PM +0900, ext Kwangwoo Lee wrote:
> Because the platform which I use did not implement smbus_xfer yet,
> it only implemented  master_xfer in struct i2c_algorithm.
> I can add smbus_xfer for my platform. I have one question and
> I know that smbus is a subset from the I2C protocol.
> Is smbus_xfer method better than master_xfer or is there any
> special reason to use smbus_xfer?

i2c subsystem has smbus emulation. The special reason is just that it's
simpler for the driver writer ;-)

-- 
balbi
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