On Fri, Feb 16, 2018 at 11:47:47AM +0100, Hans de Goede wrote: > The xHCI controller on various Intel SoCs has an extended cap mmio-range > which contains registers to control the muxing to the xHCI (host mode) > or the dwc3 (device mode) and vbus-detection for the otg usb-phy. > > Having a role-sw driver included in the xhci code (under drivers/usb/host) > is not desirable. So this commit adds a simple handler for this extended > capability, which creates a platform device with the caps mmio region as > resource, this allows us to write a separate platform role-sw driver for > the role-switch. > > Note this commit adds a call to the new xhci_ext_cap_init() function > to xhci_pci_probe(), it is added here because xhci_ext_cap_init() must > be called only once. If in the future we also want to handle ext-caps > on non pci xHCI HCDs from xhci_ext_cap_init() a call to it should also > be added to other bus probe paths. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > Acked-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> Thanks, -- heikki
