On Tuesday 28 December 2004 4:20 am, Raghunathan K wrote:
> I used the latest 2.4.28 gadget files in my 2.4.20 build (from
> include/linux/usb* and drivers/gadget). After a few changes in makefiles and
> config.in i was able to compile the gadget framework.

Good!   Though you might want to grab the latest 2.4.29-pre
code as you get going; there are a few interface updates,
and a significant bugfix (memleak) to the RNDIS support.


> But since my board 
> does not have PCI based support i was unable to compile the existing net2280
> and goku_udc controller drivers. I guess 2.6 kernel has examples of
> controller drivers which are not PCI based but ARM AHB based.

AHB would normally be modeled as a platform bus.  Its details
should be more meaningful to somone integrating an ARM cell
into some system-on-chip design (*) than to software ... that is,
someone who compiles RTL to gates, not C to assembly language.

On 2.4 such busses don't have formal support; on 2.6 "platform_bus"
is normally used to model AHB interconnects in Linux.

For kernel 2.4 based non-PCI drivers, see the gadget-2.4 tree
as listed at http://www.linux-usb.org/gadget ... you can browse
the code on-line at

 http://usb-gadget.bkbits.net:8080/gadget-2.4

Non-PCI drivers there include pxa2xx_udc, n9604, and superh_udc.
There are other such drivers; most such work uses 2.6 lately.

- Dave

(*) http://www.arm.com/products/solutions/AMBAHomePage.html


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