[PATCH 3/5] drm/amdgpu: correct the audio function initial Dstate

[Evan Quan]

On driver loading, the ASIC is in D0 state. The bundled
audio function should be in the same state also.

Change-Id: I136e196be7633e95883a7f6c33963f7583e9bad1
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index c354ffa62483..9d497b4f8e34 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -137,6 +137,7 @@ int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags)
 	struct drm_device *dev;
 	struct pci_dev *parent;
 	int r, acpi_status;
+	struct pci_dev *p = NULL;
 
 	dev = adev_to_drm(adev);
 
@@ -212,9 +213,22 @@ int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags)
 						DPM_FLAG_MAY_SKIP_RESUME);
 		pm_runtime_use_autosuspend(dev->dev);
 		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
+
 		pm_runtime_allow(dev->dev);
+
 		pm_runtime_mark_last_busy(dev->dev);
 		pm_runtime_put_autosuspend(dev->dev);
+
+		p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus),
+				adev->pdev->bus->number, 1);
+		if (p) {
+			pm_runtime_get_sync(&p->dev);
+
+			pm_runtime_mark_last_busy(&p->dev);
+			pm_runtime_put_autosuspend(&p->dev);
+
+			pci_dev_put(p);
+		}
 	}
 
 	if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DRV_LOAD))
-- 
2.29.0