I2C bus on fusion chips

[hexa]

Hi, i have a board here with a microcontroller attached to the fusion's i2c bus and i would like to access it via the linux i2c layer.   the problem: there isnt any /dev/i2c* files, so i can open() and do some ioctl() or write().   the grabber is a custom hardware in final development and im using bttv 0.7.107.   thanks, hexa