linux/Documentation/video4linux/w9966.txt
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   1W9966 Camera driver, written by Jakob Kemi (jakob.kemi@telia.com)
   2
   3After a lot of work in softice & wdasm, reading .pdf-files and tiresome
   4trial-and-error work I've finally got everything to work. I needed vision for a
   5robotics project so I borrowed this camera from a friend and started hacking.
   6Anyway I've converted my original code from the AVR 8bit RISC C/ASM code into
   7a working Linux driver.
   8
   9To get it working simply configure your kernel to support
  10parport, ieee1284, video4linux and w9966
  11
  12If w9966 is statically linked it will always perform aggressive probing for
  13the camera. If built as a module you'll have more configuration options.
  14
  15Options:
  16 modprobe w9966.o pardev=parport0(or whatever) parmode=0 (0=auto, 1=ecp, 2=epp)
  17voila!
  18
  19you can also type 'modinfo -p w9966.o' for option usage
  20(or checkout w9966.c)
  21
  22The only thing to keep in mind is that the image format is in Y-U-Y-V format
  23where every two pixels take 4 bytes. In SDL (www.libsdl.org) this format
  24is called VIDEO_PALETTE_YUV422 (16 bpp).
  25
  26A minimal test application (with source) is available from:
  27  http://www.slackwaresupport.com/howtos/Webcam-HOWTO
  28
  29The slow framerate is due to missing DMA ECP read support in the
  30parport drivers. I might add working EPP support later.
  31
  32Good luck!
  33    /Jakob Kemi
  34
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