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arao15gregkh
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xhci-pci: Allow host runtime PM as default for Intel Alder Lake xHCI
In the same way as Intel Tiger Lake TCSS (Type-C Subsystem) the Alder Lake TCSS xHCI needs to be runtime suspended whenever possible to allow the TCSS hardware block to enter D3cold and thus save energy. Cc: [email protected] Signed-off-by: Abhijeet Rao <[email protected]> Signed-off-by: Nikunj A. Dadhania <[email protected]> Signed-off-by: Azhar Shaikh <[email protected]> Signed-off-by: Mathias Nyman <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
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drivers/usb/host/xhci-pci.c

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -57,6 +57,7 @@
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#define PCI_DEVICE_ID_INTEL_CML_XHCI 0xa3af
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#define PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI 0x9a13
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#define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI 0x1138
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#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI 0x461e
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#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9
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#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
@@ -243,7 +244,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
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pdev->device == PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_XHCI ||
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pdev->device == PCI_DEVICE_ID_INTEL_ICE_LAKE_XHCI ||
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pdev->device == PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI ||
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pdev->device == PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI))
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pdev->device == PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI ||
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pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI))
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xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
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if (pdev->vendor == PCI_VENDOR_ID_ETRON &&

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