1 .. SPDX-License-Identifier: GPL-2.0
2
3 The cx88 driver
4 ===============
5
6 Author: Gerd Hoffmann
7
8 This is a v4l2 device driver for the cx2388x chip.
9
10
11 Current status
12 --------------
13
14 video
15 - Works.
16 - Overlay isn't supported.
17
18 audio
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
24 vbi
25 - Works.
26
27
28 How to add support for new cards
29 --------------------------------
30
31 The driver needs some config info for the TV cards. This stuff is in
32 cx88-cards.c. If the driver doesn't work well you likely need a new
33 entry for your card in that file. Check the kernel log (using dmesg)
34 to see whenever the driver knows your card or not. There is a line
35 like this one:
36
37 .. code-block:: none
38
39 cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \
40 34xxx models [card=1,autodetected]
41
42 If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to
43 the driver. What to do then?
44
45 1) Try upgrading to the latest snapshot, maybe it has been added
46 meanwhile.
47 2) 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").
50 3) 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
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