On Fri, Nov 30, 2007 at 04:28:27PM +0100, Laurent Pinchart wrote: [...] > > I tried to forward-port FHCI from Freescale 2.6.11 kernels. Twice. > > But these efforts always stumbled over more important tasks. > > Do you think I start from the FHCI driver provided by Freescale for 2.6.11, > from the cpm2usb driver or from scratch ?
Well, the same question I asked myself when I was looking at FHCI driver back then. USB subsystem changed drastically, powerpc bits changed too. Forward porting or doing from scratch.. hm. Unfortunately I didn't look into cpm2usb, thus I can't tell whether it will be easier to reuse. As for FHCI driver, it's not that big (6100 lines host patch + 3516 lines usbgadget patch), but since usb subsystem changed: you have to know all the changes (or to look them up) and blindly follow them. Or start from scratch with FHCI/cpm2usb as the reference, thus evolve into Linux USB expert one day. I've tried first option -- it's boring to death (that is, you're doing job USB maintainers done years ago for in-tree drivers ;-). Today, I think I would choose the second option. Definitely more fun, and most probably quicker to progress. Though, I repeat, I didn't look into cpm2usb project. -- Anton Vorontsov email: [EMAIL PROTECTED] backup email: [EMAIL PROTECTED] irc://irc.freenode.net/bd2 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
