| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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, |
| 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. |
| 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 |
| 30 | - some code present. Doesn't crash any more, but also doesn't |
| 31 | work yet ... |
| 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 | |
| 68 | -- |
| 69 | Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] |