From fa5d2e0c103a7763b140746d396dcb8c723e74f2 Mon Sep 17 00:00:00 2001
From: Tom St Denis <tom.stdenis@amd.com>
Date: Thu, 28 Jul 2016 09:45:07 -0400
Subject: [PATCH] drm/amd/amdgpu: enable PG_EN bit in powergating UVD
Enable the PG_EN bit just before the SMU would be tasked
with the PG transition.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
index 7f2b5de29f67..391457f1eafd 100644
--- a/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
@@ -997,6 +997,8 @@ static int uvd_v6_0_set_powergating_state(void *handle,
if (!(adev->pg_flags & AMD_PG_SUPPORT_UVD))
return 0;
+ WREG32(mmUVD_POWER_STATUS, UVD_POWER_STATUS__UVD_PG_EN_MASK);
+
if (state == AMD_PG_STATE_GATE) {
uvd_v6_0_stop(adev);
return 0;
--
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