PCI: Add AMD GPU multi-function power dependencies

Some AMD GPUs have built-in USB xHCI and USB Type-C UCSI controllers with
power dependencies between the GPU and the other functions as in
6d2e369f0d4c ("PCI: Add NVIDIA GPU multi-function power dependencies").

Add device link support for the AMD integrated USB xHCI and USB Type-C UCSI
controllers.

Without this, runtime power management, including GPU resume and temp and
fan sensors don't work correctly.

Reported-at: https://gitlab.freedesktop.org/drm/amd/-/issues/1704
Link: https://lore.kernel.org/r/20210903063311.3606226-1-evan.quan@amd.com
Signed-off-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index e5089af..4537d1e 100644 (file)
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5435,7 +5435,7 @@ DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
                              PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
 
 /*
- * Create device link for NVIDIA GPU with integrated USB xHCI Host
+ * Create device link for GPUs with integrated USB xHCI Host
  * controller to VGA.
  */
 static void quirk_gpu_usb(struct pci_dev *usb)
@@ -5444,9 +5444,11 @@ static void quirk_gpu_usb(struct pci_dev *usb)
 }
 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
                              PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+                             PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb);
 
 /*
- * Create device link for NVIDIA GPU with integrated Type-C UCSI controller
+ * Create device link for GPUs with integrated Type-C UCSI controller
  * to VGA. Currently there is no class code defined for UCSI device over PCI
  * so using UNKNOWN class for now and it will be updated when UCSI
  * over PCI gets a class code.
@@ -5459,6 +5461,9 @@ static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi)
 DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
                              PCI_CLASS_SERIAL_UNKNOWN, 8,
                              quirk_gpu_usb_typec_ucsi);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+                             PCI_CLASS_SERIAL_UNKNOWN, 8,
+                             quirk_gpu_usb_typec_ucsi);
 
 /*
  * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it