Re: [PATCH] Add tsc2007 based touchscreen driver.

From: David Brownell
Date: Thu Dec 04 2008 - 04:57:18 EST

On Thursday 04 December 2008, Felipe Balbi wrote:
> i2c subsystem has smbus emulation. The special reason is just that it's
> simpler for the driver writer ;-)

I'd have said "more portable", actually. I2C hosts can
do pretty much everything an SMBus host can, but the
converse is not true.

And re i2c_check_functionality() ... yes, use it to make
sure each I2C or SMBus call the driver makes is supported
by the underlying controller.

- Dave

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