linux-kernel - [PATCH] xhci-pci: Enable runtime PM on Alder Lake-N PCH xHCI controller

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Message-Id: <20220712122442.22504-1-ben.kao@intel.com>
Date:   Tue, 12 Jul 2022 20:24:42 +0800
From:   Ben Kao <ben.kao@...el.com>
To:     mathias.nyman@...el.com
Cc:     mathias.nyman@...ux.intel.com, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ben Kao <ben.kao@...el.com>
Subject: [PATCH] xhci-pci: Enable runtime PM on Alder Lake-N PCH xHCI controller

There are two Alder Lake-N xHCI host controllers with PCI IDs
0x464e and 0x54ed, now we add the quirk to default enable runtime
PM for 0x54ed.

Signed-off-by: Ben Kao <ben.kao@...el.com>
---
 drivers/usb/host/xhci-pci.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index dce6c0ec8d34..44486156bd5d 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -61,6 +61,7 @@
 #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_INTEL_ALDER_LAKE_N_PCH_XHCI	0x54ed
 #define PCI_DEVICE_ID_INTEL_RAPTOR_LAKE_XHCI		0xa71e
 #define PCI_DEVICE_ID_INTEL_METEOR_LAKE_XHCI		0x7ec0
 
@@ -272,6 +273,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *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 ||
+	     pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_N_PCH_XHCI ||
 	     pdev->device == PCI_DEVICE_ID_INTEL_RAPTOR_LAKE_XHCI ||
 	     pdev->device == PCI_DEVICE_ID_INTEL_METEOR_LAKE_XHCI))
 		xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
-- 
2.17.1