[Lula] understanding the Linux USB subsytem

[Dan Kegel]

On 5/10/07, Vineeth, Balan (IE10) <Vineeth.Balan at honeywell.com> wrote:
> I am totally new to Linux as well as USB , (have gone through the USB
> spec) .Documentation for the USB subsystem seems to be very hard to get.
>
>  All information I get tells me how to write a device driver whereas I
> want to know how the actual USB core works?
>
> As of now I am deciphering the source code which is strenuous task. ...
> I found an open source resource at
> http://www.srcdoc.com/linux_2.2.26/  which gives  function level  call
> graphs .
>
> Is something similar available for the Linux 2.6 kernel? Can any body
> direct me to some better documentation?

Have you tried http://www.csn.ul.ie/~mel/projects/codeviz/ ?

Also, have you read
http://www.linux-usb.org/
http://lxr.linux.no/source/Documentation/usb/
?

By the way, what are you working on?  We might be able
to give better advice if we knew.
- Dan