Date: Sat, 3 Feb 2007 17:10:21 +0100 From: Cats <cats@catslab.com> To: <freebsd-hackers@freebsd.org> Subject: Geode SC1100 i2c bus Message-ID: <200723171021.907086@poppa>
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Hello all, I've been looking for some technical infos and/or driver for the i2c bus on= the Geode SC1100 processor under FreeBSD 6. I found i2c stuff, tried to compile a kernel with it but nothing showed up.= I had a look at the sources and apparently it doesn't hook up to isa bus. From the geode databook, on page 11, i2c bus that is called ACB bus is in= the superIO block. This superIO block is attached on the isa bus. The ACB is at the same level than Uart, so I had a look at sio source and= got a big headache. I'm not really used to drivers nor kernel programming stuff, that's why I= need your help. My goal is to use the i2c bus on a wrap board to supervise voltages, pilot a= servo motor and so on. I do not want to use USB because it's easier with i2c and I already have i2c= hardware ready. Does someone already tried to use i2c bus on a wrap board under FreeBSD ? I had a look at openbsd and looks like it has already i2c support, but I= ain't had time to build a system and test it on the wrap. For now all my wrap boards run flawlessly with FreeBSD. I searched the mailing list archive but did not found something that could= help me. Remember I'm not really good at writing drivers stuff. I'd like to learn but I have no start point. Thanks for your help. Regards, Cedric
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