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usb: dwc3: pci: Allow Elkhart Lake to utilize DSM method for PM functionality 

Similar to some other IA platforms, Elkhart Lake too depends on the
PMU register write to request transition of Dx power state.

Thus, we add the PCI_DEVICE_ID_INTEL_EHLLP to the list of devices that
shall execute the ACPI _DSM method during D0/D3 sequence.

[heikki.krogerus@linux.intel.com: included Fixes tag]

Fixes: dbb0569de8 ("usb: dwc3: pci: Add Support for Intel Elkhart Lake Devices")
Cc: stable@vger.kernel.org
Signed-off-by: Raymond Tan <raymond.tan@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
zero-sugar-mainline-defconfig
Raymond Tan 2020-08-21 16:11:01 +03:00 committed by Felipe Balbi
parent 54c1960605
commit a609ce2a13
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/dwc3/dwc3-pci.c
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@ -147,7 +147,8 @@ static int dwc3_pci_quirks(struct dwc3_pci *dwc)
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
if (pdev->device == PCI_DEVICE_ID_INTEL_BXT ||
pdev->device == PCI_DEVICE_ID_INTEL_BXT_M) {
pdev->device == PCI_DEVICE_ID_INTEL_BXT_M ||
pdev->device == PCI_DEVICE_ID_INTEL_EHLLP) {
guid_parse(PCI_INTEL_BXT_DSM_GUID, &dwc->guid);
dwc->has_dsm_for_pm = true;
}