xhci: check xhci hardware for USB 3.1 support

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Set the controller speed to HCD_USB31 to if host hardware supports USB 3.1

For PCI xhci controllers the USB 3.1 support is checked from SBRN bits in
pci config space. Platform controllers will need to set xhci->sbrn == 0x31
to indicate USB 3.1 support before calling xhci_gen_setup().

Also make sure xhci driver works correctly with speed set to HCD_USB31

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Mathias Nyman 2015-10-01 18:40:38 +03:00 • committed by Greg Kroah-Hartman

parent 7117522520

commit b50107bb83

4 changed files with 30 additions and 23 deletions

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24

drivers/usb/host/xhci-hub.c

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6

drivers/usb/host/xhci-pci.c

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10

drivers/usb/host/xhci-ring.c

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13

drivers/usb/host/xhci.c

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