audio driver and I2C

Hello everybody !

I'm trying to write an audio driver for an audio chip controlled by the I2C bus...
My problem is that I don't have anything related to my audio chip in the /dev/ (audio, dsp, mixer...) directory... and I need it to implement mi ioctl function.
the other problem, is that I don't know how to use the i2c in kernel space...
I know I have to use i2c_master_send() but I d'ont know how to open the I2C and get the appropriate i2c_client structure...

anyone have an idea ?

Geek Guide
The DevOps Toolbox

Tools and Technologies for Scale and Reliability
by Linux Journal Editor Bill Childers

Get your free copy today

Sponsored by IBM

Upcoming Webinar
8 Signs You're Beyond Cron

Scheduling Crontabs With an Enterprise Scheduler
11am CDT, April 29th
Moderated by Linux Journal Contributor Mike Diehl

Sign up now

Sponsored by Skybot