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Diffstat (limited to 'Documentation/video4linux/w9966.txt')
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diff --git a/Documentation/video4linux/w9966.txt b/Documentation/video4linux/w9966.txt new file mode 100644 index 000000000000..e7ac33a7eb06 --- /dev/null +++ b/Documentation/video4linux/w9966.txt @@ -0,0 +1,33 @@ +W9966 Camera driver, written by Jakob Kemi (jakob.kemi@telia.com) + +After a lot of work in softice & wdasm, reading .pdf-files and tiresome +trial-and-error work I've finally got everything to work. I needed vision for a +robotics project so I borrowed this camera from a friend and started hacking. +Anyway I've converted my original code from the AVR 8bit RISC C/ASM code into +a working Linux driver. + +To get it working simply configure your kernel to support +parport, ieee1284, video4linux and w9966 + +If w9966 is statically linked it will always perform aggressive probing for +the camera. If built as a module you'll have more configuration options. + +Options: + modprobe w9966.o pardev=parport0(or whatever) parmode=0 (0=auto, 1=ecp, 2=epp) +voila! + +you can also type 'modinfo -p w9966.o' for option usage +(or checkout w9966.c) + +The only thing to keep in mind is that the image format is in Y-U-Y-V format +where every two pixels take 4 bytes. In SDL (www.libsdl.org) this format +is called VIDEO_PALETTE_YUV422 (16 bpp). + +A minimal test application (with source) is available from: + http://hem.fyristorg.com/mogul/w9966.html + +The slow framerate is due to missing DMA ECP read support in the +parport drivers. I might add working EPP support later. + +Good luck! + /Jakob Kemi |