Is it possible to get source code of a Linux USB driver form somewhere ...... ????
I searched but could not find.
I am reading a book on Linux Device Drivers - III edition
But still I need something to start with !!!!

Please help !

Well, you'll have to look at the kernelsources. Download the sources, extract the archive and enter the directory ./linux-2.6.??.?/drivers/usb/
There you will hopefully find what you're searching for.

Markus

If you install the Kernel Source packages for your particular Linux, you'll find plenty of existing examples of drivers ... including, no doubt, one that is quite close to what you're looking for. (Heck, it's entirely possible that you will stumble upon exactly what(!) you are looking for!)

"Use the Source, Luke!!"

Carefully browse the source-code of the driver. Compare it, at your leisure, to similar drivers in the neighborhood. These are, after all, the actual source-code files of deployed drivers that, as far as anyone and everyone knows, actually work! And they're written for the Linux distro that you are currently using! (Cool, huh?)

If there is any possible better-place to begin your studies than that, I do not know what it could possibly be.

"Use the Source, Luke!!"

I checked whole folder of Linux.
I found the driver folder and the USB folder in which there were around 14-15 folders all containing "Kconfig" and Makefiles !

I want to know where can I find the C codes or Perl Codes or Pyhton Codes or the Object files included in the Makefiles .....
I could not find any ????!!!!
Am I going wrong somewhere ?

Please help !

You might well find source-files that refer to files that are not in any package that you have yet installed on your computer.

Kernel source-code will be in one package or another, and it will be an "optional" package.

You are asking many things here.

Yes, some source code may be found somewhere.

If it is open sourced and there is a driver then it may be on the web.

If it is closed then you'd have to have access to it by some agreement. You can't easily decompile a driver to get source code.

If you have source for a similar make or know enough to get a close match you can take some other source code and work on it. Debug it if you know the differences in the hardware.


In some cases a windows driver or even windows source could be used.

I have Ubuntu 10.10 and Linux Mint !
I did not find any thing in them .... !

Could you suggest me other open source linux or non-linux OSs where I could find the USB Driver full source code ?

I also have Minix 3.0, but I am having problems in installing it .... !

Not sure what Perl or Python have to do with anything, as the kernel is written in C (with some Assembly).

You can browse the kernel sources online, at http://kernel.org. Use the "Gitweb" link for a given release and then the link that says "tree" (at the top) will give you the latest version of the source tree for that release.

Minix is in a class of it's own.

What exactly is this device?