I already have other tuners so this is not a matter of life and death for me. I will try the mailing list after I have exhausted all other options. Now, this is the scoop so far:
1. Adding the card to the cx231xx driver if fairly simple as you can see:
[ 500.410548] cx231xx 6-2:1.1: XXXX New device Conexant Systems Inc. Polaris AV Capture @ 480 Mbps (0ccd:5509) with 7 interfaces
[ 500.410705] cx231xx 6-2:1.1: XX Identified as Terratec TA (card=28)
I have put in the extra XXXes into the driver code to make sure that it is my driver that is called.
2. The hard part is the tuner, TDA18273.
That tuner is not supported under LinuxTV. The TDA18271 is, but it is different. I found a driver for 18273 by CrazyCat, but it is for an older version of Linux, so what I have done so far is to take all the files from the TDA18271 driver and renamed them to 18273. I will then use the docs for the two tuners and the code from CrazyCat to make a new driver. I have gotten as far as the driver loading, but I need to figure out whether the tuner is on address C0 (or 60 if you shift out the write bit) or C6. The 18273 address can be selected through a voltage on a pin.
I have set up a separate box for developing since I have to do a lot of reboots :) Wish me luck!
