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70 lines
2.2 KiB
70 lines
2.2 KiB
20 years ago
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cx8800 release notes
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====================
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This is a v4l2 device driver for the cx2388x chip.
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current status
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==============
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video
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- Basically works.
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- Some minor image quality glitches.
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- For now only capture, overlay support isn't completed yet.
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audio
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- The chip specs for the on-chip TV sound decoder are next
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to useless :-/
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- Neverless the builtin TV sound decoder starts working now,
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at least for PAL-BG. Other TV norms need other code ...
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FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE
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USING.
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- Most tuner chips do provide mono sound, which may or may not
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be useable depending on the board design. With the Hauppauge
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cards it works, so there is mono sound available as fallback.
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- audio data dma (i.e. recording without loopback cable to the
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sound card) should be possible, but there is no code yet ...
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vbi
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- some code present. Doesn't crash any more, but also doesn't
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work yet ...
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how to add support for new cards
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================================
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The driver needs some config info for the TV cards. This stuff is in
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cx88-cards.c. If the driver doesn't work well you likely need a new
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entry for your card in that file. Check the kernel log (using dmesg)
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to see whenever the driver knows your card or not. There is a line
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like this one:
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cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \
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34xxx models [card=1,autodetected]
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If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to
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the driver. What to do then?
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(1) Try upgrading to the latest snapshot, maybe it has been added
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meanwhile.
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(2) You can try to create a new entry yourself, have a look at
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cx88-cards.c. If that worked, mail me your changes as unified
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diff ("diff -u").
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(3) Or you can mail me the config information. I need at least the
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following informations to add the card:
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* the PCI Subsystem ID ("0070:3400" from the line above,
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"lspci -v" output is fine too).
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* the tuner type used by the card. You can try to find one by
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trial-and-error using the tuner=<n> insmod option. If you
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know which one the card has you can also have a look at the
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list in CARDLIST.tuner
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Have fun,
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Gerd
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--
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Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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