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1da177e4 LT |
1 | |
2 | cx8800 release notes | |
3 | ==================== | |
4 | ||
5 | This is a v4l2 device driver for the cx2388x chip. | |
6 | ||
7 | ||
8 | current status | |
9 | ============== | |
10 | ||
11 | video | |
12 | - Basically works. | |
13 | - Some minor image quality glitches. | |
14 | - For now only capture, overlay support isn't completed yet. | |
15 | ||
16 | audio | |
17 | - The chip specs for the on-chip TV sound decoder are next | |
18 | to useless :-/ | |
19 | - Neverless the builtin TV sound decoder starts working now, | |
4ac97914 MCC |
20 | at least for PAL-BG. Other TV norms need other code ... |
21 | FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE | |
22 | USING. | |
1da177e4 LT |
23 | - Most tuner chips do provide mono sound, which may or may not |
24 | be useable depending on the board design. With the Hauppauge | |
25 | cards it works, so there is mono sound available as fallback. | |
26 | - audio data dma (i.e. recording without loopback cable to the | |
27 | sound card) should be possible, but there is no code yet ... | |
28 | ||
29 | vbi | |
0d0f1e0a RD |
30 | - Code present. Works for NTSC closed caption. PAL and other |
31 | TV norms may or may not work. | |
1da177e4 LT |
32 | |
33 | ||
34 | how to add support for new cards | |
35 | ================================ | |
36 | ||
37 | The driver needs some config info for the TV cards. This stuff is in | |
38 | cx88-cards.c. If the driver doesn't work well you likely need a new | |
39 | entry for your card in that file. Check the kernel log (using dmesg) | |
40 | to see whenever the driver knows your card or not. There is a line | |
41 | like this one: | |
42 | ||
43 | cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \ | |
44 | 34xxx models [card=1,autodetected] | |
45 | ||
46 | If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to | |
47 | the driver. What to do then? | |
48 | ||
49 | (1) Try upgrading to the latest snapshot, maybe it has been added | |
50 | meanwhile. | |
51 | (2) You can try to create a new entry yourself, have a look at | |
52 | cx88-cards.c. If that worked, mail me your changes as unified | |
53 | diff ("diff -u"). | |
54 | (3) Or you can mail me the config information. I need at least the | |
55 | following informations to add the card: | |
56 | ||
57 | * the PCI Subsystem ID ("0070:3400" from the line above, | |
58 | "lspci -v" output is fine too). | |
59 | * the tuner type used by the card. You can try to find one by | |
60 | trial-and-error using the tuner=<n> insmod option. If you | |
61 | know which one the card has you can also have a look at the | |
62 | list in CARDLIST.tuner | |
63 | ||
64 | Have fun, | |
65 | ||
66 | Gerd | |
67 | ||
994914ea | 68 | -- |
1da177e4 | 69 | Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] |