Commit 74f55a62 authored by Mathias Nyman's avatar Mathias Nyman Committed by Greg Kroah-Hartman
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xhci: Allow host runtime PM as default for Intel Alder Lake N xHCI 



Alder Lake N TCSS xHCI needs to be runtime suspended whenever possible
to allow the TCSS hardware block to enter D3 and thus save energy

Cc: stable@kernel.org
Suggested-by: default avatarGopal Vamshi Krishna <vamshi.krishna.gopal@intel.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220511220450.85367-10-mathias.nyman@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 15ad5b61

drivers/usb/host/xhci-pci.c

+2 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ 
#define PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI		0x9a13

#define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI		0x1138

#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI		0x461e

#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_XHCI		0x464e

#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI	0x51ed



#define PCI_DEVICE_ID_AMD_RENOIR_XHCI			0x1639
@@ -267,6 +268,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) 
	     pdev->device == PCI_DEVICE_ID_INTEL_TIGER_LAKE_XHCI ||

	     pdev->device == PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI ||

	     pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI ||

	     pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_XHCI ||

	     pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_PCH_XHCI))

		xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;