Hi Felipe, all,
I am adding an otg driver for dwc3 core (hope that I will release it for
RFC soon) and I have some questions about the xHCI driver, since I guess I
need to do some changes in the xHCI to regirtser itself to the otg.
First, I understand that there is secondary and primary hcd ? can you give
me more insight on this ?
Second, I see that in the xHCI-pci-probe the usb_add_hcd is called on the
secondary (right?) while the irq are set only if the hcd is primary (so
how it works?)
Do I need to change in the xhci-pci-probe to be something like this:
otg = usb_get_transceiver();
if (otg) {
retval = otg_set_host(otg, hcd_to_bus(xhci->shared_hcd));
}
else {
retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
IRQF_SHARED);
}
I will really appreciate your guidelines,
Thanks,
Ido
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