[PATCH v2 4/7] drm/amdgpu: Add suspend function to clear the GPU power profile.

[Arvind Yadav]

This patch adds a suspend function that will clear the GPU
power profile before going into suspend state.

v2:
- Add the new suspend function based on review comment.

Cc: Shashank Sharma <shashank.sharma at amd.com>
Cc: Christian Koenig <christian.koenig at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Arvind Yadav <Arvind.Yadav at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c  | 23 +++++++++++++++++++
 drivers/gpu/drm/amd/include/amdgpu_workload.h |  2 ++
 3 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index cd3bf641b630..3b70e657b439 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4212,6 +4212,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
 
 	amdgpu_ras_suspend(adev);
 
+	amdgpu_workload_profile_suspend(adev);
+
 	amdgpu_device_ip_suspend_phase1(adev);
 
 	if (!adev->in_s0ix)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
index 6367eb88a44d..44ca8e986984 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
@@ -174,6 +174,29 @@ void amdgpu_workload_profile_set(struct amdgpu_device *adev,
 	mutex_unlock(&workload->workload_lock);
 }
 
+void amdgpu_workload_profile_suspend(struct amdgpu_device *adev)
+{
+	struct amdgpu_smu_workload *workload = &adev->smu_workload;
+	int ret;
+
+	mutex_lock(&workload->workload_lock);
+	cancel_delayed_work_sync(&workload->smu_delayed_work);
+
+	/* Clear all the set GPU power profile*/
+	for (int index = fls(workload->submit_workload_status);
+	     index > 0; index--) {
+		if (workload->submit_workload_status & (1 << index)) {
+			atomic_set(&workload->power_profile_ref[index], 0);
+			ret = amdgpu_power_profile_clear(adev, index);
+			if (ret)
+				DRM_WARN("Failed to clear power profile %s, err = %d\n",
+					 amdgpu_workload_mode_name[index], ret);
+		}
+	}
+	workload->submit_workload_status = 0;
+	mutex_unlock(&workload->workload_lock);
+}
+
 void amdgpu_workload_profile_init(struct amdgpu_device *adev)
 {
 	adev->smu_workload.adev = adev;
diff --git a/drivers/gpu/drm/amd/include/amdgpu_workload.h b/drivers/gpu/drm/amd/include/amdgpu_workload.h
index ee1f87257f2d..0acd8769ec52 100644
--- a/drivers/gpu/drm/amd/include/amdgpu_workload.h
+++ b/drivers/gpu/drm/amd/include/amdgpu_workload.h
@@ -52,6 +52,8 @@ void amdgpu_workload_profile_put(struct amdgpu_device *adev,
 void amdgpu_workload_profile_set(struct amdgpu_device *adev,
 				 uint32_t ring_type);
 
+void amdgpu_workload_profile_suspend(struct amdgpu_device *adev);
+
 void amdgpu_workload_profile_init(struct amdgpu_device *adev);
 
 void amdgpu_workload_profile_fini(struct amdgpu_device *adev);
-- 
2.34.1