| From a609ce2a13360d639b384b6ca783b38c1247f2db Mon Sep 17 00:00:00 2001 |
| From: Raymond Tan <raymond.tan@intel.com> |
| Date: Fri, 21 Aug 2020 16:11:01 +0300 |
| Subject: usb: dwc3: pci: Allow Elkhart Lake to utilize DSM method for PM functionality |
| |
| From: Raymond Tan <raymond.tan@intel.com> |
| |
| commit a609ce2a13360d639b384b6ca783b38c1247f2db upstream. |
| |
| 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: dbb0569de852 ("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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/usb/dwc3/dwc3-pci.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/drivers/usb/dwc3/dwc3-pci.c |
| +++ b/drivers/usb/dwc3/dwc3-pci.c |
| @@ -147,7 +147,8 @@ static int dwc3_pci_quirks(struct dwc3_p |
| |
| 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; |
| } |
