[AMD Public Use]
Ping ... please help review.
Thanks,
Prike
> -----Original Message-----
> From: Liang, Prike <Prike.Liang@xxxxxxx>
> Sent: Tuesday, January 19, 2021 9:49 AM
> To: linux-usb@xxxxxxxxxxxxxxx
> Cc: mathias.nyman@xxxxxxxxx; Liang, Prike <Prike.Liang@xxxxxxx>
> Subject: [PATCH] usb: pci-quirks: add XHCI_COMP_MODE_QUIRK for
> disabling amd xhci D3cold
>
> During xhci suspend some AMD USB host will lose port status change events
> and need to have the registers polled during D3, so now just avoid D3cold.
>
> Signed-off-by: Prike Liang <Prike.Liang@xxxxxxx>
> ---
> drivers/usb/host/xhci-pci.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index
> 3feaafe..bff817a 100644
> --- a/drivers/usb/host/xhci-pci.c
> +++ b/drivers/usb/host/xhci-pci.c
> @@ -170,6 +170,11 @@ static void xhci_pci_quirks(struct device *dev, struct
> xhci_hcd *xhci)
> (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
> xhci->quirks |= XHCI_U2_DISABLE_WAKE;
>
> +if (pdev->vendor == PCI_VENDOR_ID_AMD &&
> +pdev->device == 0x1639) {
> +xhci->quirks |= XHCI_COMP_MODE_QUIRK;
> +}
> +
> if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
> xhci->quirks |= XHCI_LPM_SUPPORT;
> xhci->quirks |= XHCI_INTEL_HOST;
> --
> 2.7.4
