From: Azhar Shaikh <azhar.shaikh@intel.com>
To: mathias.nyman@linux.intel.com, gregkh@linuxfoundation.org,
p.zabel@pengutronix.de, linux-usb@vger.kernel.org
Cc: mika.westerberg@linux.intel.com, abhijeet.rao@intel.com,
nikunj.dadhania@intel.com, linux-kernel@vger.kernel.org,
azhar.shaikh@intel.com
Subject: [PATCH] xhci-pci: Allow host runtime PM as default for Intel Alder Lake xHCI
Date: Tue, 6 Apr 2021 16:35:29 -0700 [thread overview]
Message-ID: <20210406233529.19543-1-azhar.shaikh@intel.com> (raw)
From: Abhijeet Rao <abhijeet.rao@intel.com>
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.
Signed-off-by: Abhijeet Rao <abhijeet.rao@intel.com>
Signed-off-by: Nikunj A. Dadhania <nikunj.dadhania@intel.com>
Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com>
---
drivers/usb/host/xhci-pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 5bbccc9a0179..a858add8436c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -57,6 +57,7 @@
#define PCI_DEVICE_ID_INTEL_CML_XHCI 0xa3af
#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_AMD_PROMONTORYA_4 0x43b9
#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
@@ -243,7 +244,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
pdev->device == PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_XHCI ||
pdev->device == PCI_DEVICE_ID_INTEL_ICE_LAKE_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_MAPLE_RIDGE_XHCI ||
+ pdev->device == PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI))
xhci->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
--
2.17.1
next reply other threads:[~2021-04-06 23:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 23:35 Azhar Shaikh [this message]
2021-04-07 10:54 ` Mathias Nyman
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