xhci: Allow RPM on the USB controller (1022:43f7) by default

Enable runtime PM by default for older AMD 1022:43f7 xHCI 1.1 host as it
is proven to work.
Driver enables runtime PM by default for newer xHCI 1.2 host.

Link: https://lore.kernel.org/all/12335218.O9o76ZdvQC@natalenko.name/
Cc: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20240304054327.2564500-1-Basavaraj.Natikar@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 1843f3d..93b6976 100644 (file)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -307,8 +307,11 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
                xhci->quirks |= XHCI_RESET_ON_RESUME;
        }
 
-       if (pdev->vendor == PCI_VENDOR_ID_AMD)
+       if (pdev->vendor == PCI_VENDOR_ID_AMD) {
                xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+               if (pdev->device == 0x43f7)
+                       xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
+       }
 
        if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
                ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||