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README.cx88

README.cx88 2.1 KB
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  1. cx8800 release notes
    2. 

  2. ====================
    3. 

  3. 

  4. This is a v4l2 device driver for the cx2388x chip.
    5. 

  5. 

  6. 

  7. current status
    8. 

  8. ==============
    9. 

  9. 

  10. video
    11. 

  11. 	- Basically works.
    12. 

  12. 	- For now, only capture and read(). Overlay isn't supported.
    13. 

  13. 

  14. audio
    15. 

  15. 	- The chip specs for the on-chip TV sound decoder are next
    16. 

  16. 	  to useless :-/
    17. 

  17. 	- Neverless the builtin TV sound decoder starts working now,
    18. 

  18. 	  at least for some standards.
    19. 

  19. 	  FOR ANY REPORTS ON THIS PLEASE MENTION THE TV NORM YOU ARE
    20. 

  20. 	  USING.
    21. 

  21. 	- Most tuner chips do provide mono sound, which may or may not
    22. 

  22. 	  be useable depending on the board design.  With the Hauppauge
    23. 

  23. 	  cards it works, so there is mono sound available as fallback.
    24. 

  24. 	- audio data dma (i.e. recording without loopback cable to the
    25. 

  25. 	  sound card) is supported via cx88-alsa.
    26. 

  26. 

  27. vbi
    28. 

  28. 	- Code present. Works for NTSC closed caption. PAL and other
    29. 

  29. 	  TV norms may or may not work.
    30. 

  30. 

  31. 

  32. how to add support for new cards
    33. 

  33. ================================
    34. 

  34. 

  35. The driver needs some config info for the TV cards.  This stuff is in
    36. 

  36. cx88-cards.c.  If the driver doesn't work well you likely need a new
    37. 

  37. entry for your card in that file.  Check the kernel log (using dmesg)
    38. 

  38. to see whenever the driver knows your card or not.  There is a line
    39. 

  39. like this one:
    40. 

  40. 

  41. 	cx8800[0]: subsystem: 0070:3400, board: Hauppauge WinTV \
    42. 

  42. 		34xxx models [card=1,autodetected]
    43. 

  43. 

  44. If your card is listed as "board: UNKNOWN/GENERIC" it is unknown to
    45. 

  45. the driver.  What to do then?
    46. 

  46. 

  47.  (1) Try upgrading to the latest snapshot, maybe it has been added
    48. 

  48.      meanwhile.
    49. 

  49.  (2) You can try to create a new entry yourself, have a look at
    50. 

  50.      cx88-cards.c.  If that worked, mail me your changes as unified
    51. 

  51.      diff ("diff -u").
    52. 

  52.  (3) Or you can mail me the config information.  I need at least the
    53. 

  53.      following informations to add the card:
    54. 

  54. 

  55.      * the PCI Subsystem ID ("0070:3400" from the line above,
    56. 

  56.        "lspci -v" output is fine too).
    57. 

  57.      * the tuner type used by the card.  You can try to find one by
    58. 

  58.        trial-and-error using the tuner=<n> insmod option.  If you
    59. 

  59.        know which one the card has you can also have a look at the
    60. 

  60.        list in CARDLIST.tuner
    61. 

  61. 

  62. Have fun,
    63. 

  63. 

  64.   Gerd
    65. 

  65. 

  66. --
    67. 

  67. Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
    68.