Documentation/video4linux/README.cx88

   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]