This is required by gfx hw and can fix the rlc hang when
do s3 stree test on Cz/St.

Signed-off-by: Hang Zhou <[email protected]>
Signed-off-by: Rex Zhu <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 903725ba..a2acd76 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -5618,6 +5618,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
        if (amdgpu_sriov_vf(adev))
                return 0;
 
+       if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+                               AMD_PG_SUPPORT_RLC_SMU_HS |
+                               AMD_PG_SUPPORT_CP |
+                               AMD_PG_SUPPORT_GFX_DMG))
+               adev->gfx.rlc.funcs->enter_safe_mode(adev);
        switch (adev->asic_type) {
        case CHIP_CARRIZO:
        case CHIP_STONEY:
@@ -5667,7 +5672,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
        default:
                break;
        }
-
+       if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_SMG |
+                               AMD_PG_SUPPORT_RLC_SMU_HS |
+                               AMD_PG_SUPPORT_CP |
+                               AMD_PG_SUPPORT_GFX_DMG))
+               adev->gfx.rlc.funcs->exit_safe_mode(adev);
        return 0;
 }
 
-- 
1.9.1

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