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drm/amdgpu: Disable gfx off if VCN is busy 

this patch is a workaround for the gpu hang
at video begin/end time if gfx off is enabled.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2018-07-27 17:00:02 +08:00 committed by Alex Deucher
parent 408acede87
commit 3fded222f4
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
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@ -217,6 +217,7 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
fences += amdgpu_fence_count_emitted(&adev->vcn.ring_jpeg);
if (fences == 0) {
amdgpu_gfx_off_ctrl(adev, true);
if (adev->pm.dpm_enabled)
amdgpu_dpm_enable_uvd(adev, false);
else
@ -233,6 +234,7 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
bool set_clocks = !cancel_delayed_work_sync(&adev->vcn.idle_work);
if (set_clocks) {
amdgpu_gfx_off_ctrl(adev, false);
if (adev->pm.dpm_enabled)
amdgpu_dpm_enable_uvd(adev, true);
else