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From c4c82690a760351b6e0b0d387f7ab40066531c81 Mon Sep 17 00:00:00 2001
From: Sudheesh Mavila <sudheesh.mavila@amd.com>
Date: Fri, 24 Jul 2020 15:43:52 +0530
Subject: [PATCH 01/10] usb: xhci: Add LPM support to AMD xhci controller
xHCI quirk for LPM and Runtime power management for AMD Raven xHCI
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
---
drivers/usb/host/xhci-pci.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 5bbccc9a0179..1d939747ba29 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -172,6 +172,12 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
if (pdev->vendor == PCI_VENDOR_ID_AMD)
xhci->quirks |= XHCI_TRUST_TX_LENGTH;
+ if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+ (pdev->device == 0x15e0 || pdev->device == 0x15e1 || pdev->device == 0x15e5)) {
+ xhci->quirks |= XHCI_LPM_SUPPORT;
+ xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
+ }
+
if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
--
2.17.1
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