raspberrypi/linux — pull request #19 by FrankBuss (2012-05-11 00:06:54+00:00)
Title: I2C with the Linux bitbanging interface activated

See http://www.raspberrypi.org/forum/projects-and-collaboration-general/linux-device-drivers-for-rapberry-pi-on-board-io/page-4 for details. I'll try to implement a driver which uses the I2C hardware module of the microcontroller this weekend, but might need some more time and until then, this is a stable intermediate solution.