On Sat, 26 Nov 2011, Hauke Mehrtens wrote: > > Main question would be whether a linux device driver can provide > > multiple system functions. I tend to say it can. So I would suggest to > > have a single device driver providing OHCI and EHCI functionality. > > @USB guys, how do I design a driver for a linux device providing ohci > and ehci functionality at the same time. The device has two address > spaces one for ehci and one for ohci functions. How many IRQ lines? And incidentally, in what sense is this _one_ device? Are you sure it's not _two_ devices in one package? > I thought about registering one controller (ehci or ohci) with > usb_create_shared_hcd(). The code then will be in an own module and not > in echi_hcd.ko and ochi_hcd.ko like for pci, I hope this works. > Is there a better solution to do this, is there an other driver with the > same problem already solved? I don't know of any other driver that does this. Your best solution is probably write a driver that registers two child platform devices, and write two corresponding platform drivers, one for the EHCI part and one for the OHCI part. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
