On 2017-09-05 18:42, Hans de Goede wrote: > The Intel cherrytrail xhci controller 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 mux driver included in the xhci code (or 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 mux driver for the > mux. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > Changes in v2: > -Check xHCI controller PCI device-id instead of only checking for the > Intel Extended capability ID, as the Extended capability ID is used on > other model Intel xHCI controllers too > --- > drivers/usb/host/Makefile | 2 +- > drivers/usb/host/xhci-intel-quirks.c | 85 ++++++++++++++++++++++++++++++++++++ > drivers/usb/host/xhci-pci.c | 4 ++ > drivers/usb/host/xhci.h | 2 + > 4 files changed, 92 insertions(+), 1 deletion(-) > create mode 100644 drivers/usb/host/xhci-intel-quirks.c > > diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile > index cf2691fffcc0..441edf82eb1c 100644 > --- a/drivers/usb/host/Makefile > +++ b/drivers/usb/host/Makefile > @@ -63,7 +63,7 @@ obj-$(CONFIG_USB_OHCI_HCD_DAVINCI) += ohci-da8xx.o > obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o > obj-$(CONFIG_USB_FHCI_HCD) += fhci.o > obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o > -obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o > +obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o xhci-intel-quirks.o > obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o > obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk.o > obj-$(CONFIG_USB_XHCI_TEGRA) += xhci-tegra.o > diff --git a/drivers/usb/host/xhci-intel-quirks.c b/drivers/usb/host/xhci-intel-quirks.c > new file mode 100644 > index 000000000000..819f5f9da9ee > --- /dev/null > +++ b/drivers/usb/host/xhci-intel-quirks.c > @@ -0,0 +1,85 @@ > +/* > + * Intel Vendor Defined XHCI extended capability handling > + * > + * Copyright (c) 2016) Hans de Goede <hdegoede@xxxxxxxxxx> 2017? And drop the stray bracket. Cheers, Peter _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
