1.. SPDX-License-Identifier: GPL-2.0 2 3The cx88 driver 4=============== 5 6Author: Gerd Hoffmann 7 8This is a v4l2 device driver for the cx2388x chip. 9 10 11Current status 12-------------- 13 14video 15 - Works. 16 - Overlay isn't supported. 17 18audio 19 - Works. The TV standard detection is made by the driver, as the 20 hardware has bugs to auto-detect. 21 - audio data dma (i.e. recording without loopback cable to the 22 sound card) is supported via cx88-alsa. 23 24vbi 25 - Works. 26 27 28How to add support for new cards 29-------------------------------- 30 31The driver needs some config info for the TV cards. This stuff is in 32cx88-cards.c. If the driver doesn't work well you likely need a new 33entry for your card in that file. Check the kernel log (using dmesg) 34to see whenever the driver knows your card or not. There is a line 35like this one: 36 37.. code-block:: none 38 39 cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \ 40 34xxx models [card=1,autodetected] 41 42If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to 43the driver. What to do then? 44 451) Try upgrading to the latest snapshot, maybe it has been added 46 meanwhile. 472) You can try to create a new entry yourself, have a look at 48 cx88-cards.c. If that worked, mail me your changes as unified 49 diff ("diff -u"). 503) Or you can mail me the config information. We need at least the 51 following information to add the card: 52 53 - the PCI Subsystem ID ("0070:3400" from the line above, 54 "lspci -v" output is fine too). 55 - the tuner type used by the card. You can try to find one by 56 trial-and-error using the tuner=<n> insmod option. If you 57 know which one the card has you can also have a look at the 58 list in CARDLIST.tuner 59