usb: xhci-pci: Add support for reset controllers

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Some atypical users of xhci-pci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629161845.6021-6-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Nicolas Saenz Julienne 2020-06-29 18:18:41 +02:00 • committed by Greg Kroah-Hartman

parent 258f92d2f8

commit 768430e470

2 changed files with 12 additions and 0 deletions

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10

drivers/usb/host/xhci-pci.c

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2

drivers/usb/host/xhci.h

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