Re: [PATCH] i2c/busses: Driver for Devantech USB-ISS I2C adapter

[Oliver Neukum <oneukum@suse.de>]

Am Mittwoch, 23. März 2011, 06:41:53 schrieb Bernhard Walle:
> * Greg KH <greg@kroah.com> [2011-03-23 05:50]:
> > 
> > It should, you can talk to the device from userspace using that virtual
> > serial port, right?  Isn't that what you need to do here?
> > 
> > Why try to create a new type of interface to the device from what it was
> > supposed to be by the manufacturer?
> 
> The device is multi-function. It's quite common to use some (extended)
> USB-to-serial-converters also for serial busses like I²C or SPI. I know
> that from the FT2232C chip.
> 
> Using such a device as normal Linux I²C device makes perfectly sense,
> IMO.

Yes, but not the approach of kicking off the class driver. As those devices
presumably use some form of I2C over Serial, you ought to handle them in the
way PPP handles IP over Serial, especially if thy use a common encapsulation.

	Regards
		Oliver