On Tue, Mar 06, 2001 at 08:34:56PM +0100, Jakob Kemi wrote: > Hello everybody. > > I've got a webcam named Lifeview Flycam Supra > which uses the w9966cf interface chip for the LPT port. > While working on a small hobby-robotic project I've > created complete and working drivers for it. (not Linux) > To share some with the community and learn about > driver creation for linux I'm planning to port my work > to Linux 2.4.x and I now need some directions. > > Should I write it for video4linux or for v4l2? > Is there anything special I should consider. > Does it exists any template drivers or good tutorials? Since I had about the same intention writing the cpia driver I might qualify to answer. The correct answer really depends on the kind of stuff you want to write. My intention was to have a driver for the applications around so I chose v4l. My suggestion to proceed in that case: use a working driver as a template. Concentrate on the core functionality first, i.e. do not start with a multithreaded double buffer kernel-thread and other fancy stuff model first. Also get the Rubini-book about kernel-development. The API is ancient but the principles are good. There are also some kernel-howtos around (AFAIR about locking, interrupt handling etc.) that are quite important and more or less up to date. And if you really want to write a fency state-of-the-art driver that can utilize smp and other cute things start reading the kernel-list (I never did, since I do not have the time). Have fun, Peter -- You can weave your life so long - only so long, and then a thing in the world out of your control will tug at one vital thread and leave you patternless and subdued. ------------------------------- Email: Peter_Pregler@xxxxxxxxx
