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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>
This commit is contained in:
Tom St Denis 2016-07-28 09:45:07 -04:00 committed by Alex Deucher
parent 2875125c31
commit fa5d2e0c10
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c
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@ -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;