6.4. The cx88 driver¶
Author: Gerd Hoffmann
This is a v4l2 device driver for the cx2388x chip.
6.4.1. Current status¶
- Overlay isn’t supported.
- Works. The TV standard detection is made by the driver, as the hardware has bugs to auto-detect.
- audio data dma (i.e. recording without loopback cable to the sound card) is supported via cx88-alsa.
6.4.2. How to add support for new cards¶
The driver needs some config info for the TV cards. This stuff is in cx88-cards.c. If the driver doesn’t work well you likely need a new entry for your card in that file. Check the kernel log (using dmesg) to see whenever the driver knows your card or not. There is a line like this one:
cx8800: subsystem: 0070:3400, board: Hauppauge WinTV \ 34xxx models [card=1,autodetected]
If your card is listed as “board: UNKNOWN/GENERIC” it is unknown to the driver. What to do then?
Try upgrading to the latest snapshot, maybe it has been added meanwhile.
You can try to create a new entry yourself, have a look at cx88-cards.c. If that worked, mail me your changes as unified diff (“diff -u”).
Or you can mail me the config information. We need at least the following information to add the card:
- the PCI Subsystem ID (“0070:3400” from the line above, “lspci -v” output is fine too).
- the tuner type used by the card. You can try to find one by trial-and-error using the tuner=<n> insmod option. If you know which one the card has you can also have a look at the list in CARDLIST.tuner