[PATCH 4/4] drm/amdgpu: fulfill Navi gfx and pcie settings on umd pstate switching(V2)

[Evan Quan]

Fulfill Navi gfx and pcie settings on umd pstate switching.

V2: temporarily skip the pcie ASPM setting considering the ASPM function
    is not fully enabled yet

Change-Id: I8d746d4c25f890665feeffddf64164ed2b1f5ccc
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nv.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index d07c84a7543d..36e59c735a05 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -694,6 +694,23 @@ static void nv_init_doorbell_index(struct amdgpu_device *adev)
 static int nv_update_umd_stable_pstate(struct amdgpu_device *adev,
 				       bool enter)
 {
+	if (enter)
+		amdgpu_gfx_rlc_enter_safe_mode(adev);
+	else
+		amdgpu_gfx_rlc_exit_safe_mode(adev);
+
+	if (adev->gfx.funcs->update_perfmon_mgcg)
+		adev->gfx.funcs->update_perfmon_mgcg(adev, !enter);
+
+	/*
+	 * The ASPM function is not fully enabled and verified on
+	 * Navi yet. Temporarily skip this until ASPM enabled.
+	 */
+#if 0
+	if (adev->nbio.funcs->enable_aspm)
+		adev->nbio.funcs->enable_aspm(adev, !enter);
+#endif
+
 	return 0;
 }
 
-- 
2.28.0