[PATCH AUTOSEL 5.10 025/217] drm/amdgpu: disable gfxoff if VCN is busy

[Sasha Levin]

From: Jiansong Chen <Jiansong.Chen at amd.com>

[ Upstream commit ef3b2987254035f9b869f70151b4220c34f2f133 ]

Toggle on/off gfxoff during video playback to fix gpu hang.

v2: change sequence to be more compatible with original code.

Signed-off-by: Jiansong Chen <Jiansong.Chen at amd.com>
Reviewed-by: James Zhu <James.Zhu at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
index a563328e3daea..ee6a42c81bd99 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c
@@ -345,6 +345,7 @@ static void amdgpu_vcn_idle_work_handler(struct work_struct *work)
 	}
 
 	if (!fences && !atomic_read(&adev->vcn.total_submission_cnt)) {
+		amdgpu_gfx_off_ctrl(adev, true);
 		amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
 		       AMD_PG_STATE_GATE);
 	} else {
@@ -357,7 +358,9 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
 	struct amdgpu_device *adev = ring->adev;
 
 	atomic_inc(&adev->vcn.total_submission_cnt);
-	cancel_delayed_work_sync(&adev->vcn.idle_work);
+
+	if (!cancel_delayed_work_sync(&adev->vcn.idle_work))
+		amdgpu_gfx_off_ctrl(adev, false);
 
 	mutex_lock(&adev->vcn.vcn_pg_lock);
 	amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VCN,
-- 
2.27.0