drm/amdgpu/vcn:Scan enc/jpeg fences to init dpg pause new state

Scan enc/jpeg fences to init dpg pause new state in begin use.
It will help set dpg mode to desire state actively.
Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c

@@ -396,16 +396,26 @@ void amdgpu_vcn_ring_begin_use(struct amdgpu_ring *ring)
 
 	if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)	{
 		struct dpg_pause_state new_state;
+		unsigned int fences = 0;
+		unsigned int i;
 
-		if (ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC)
+		for (i = 0; i < adev->vcn.num_enc_rings; ++i) {
+			fences += amdgpu_fence_count_emitted(&adev->vcn.ring_enc[i]);
+		}
+		if (fences)
 			new_state.fw_based = VCN_DPG_STATE__PAUSE;
 		else
-			new_state.fw_based = adev->vcn.pause_state.fw_based;
+			new_state.fw_based = VCN_DPG_STATE__UNPAUSE;
 
-		if (ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
+		if (amdgpu_fence_count_emitted(&adev->vcn.ring_jpeg))
 			new_state.jpeg = VCN_DPG_STATE__PAUSE;
 		else
-			new_state.jpeg = adev->vcn.pause_state.jpeg;
+			new_state.jpeg = VCN_DPG_STATE__UNPAUSE;
+
+		if (ring->funcs->type == AMDGPU_RING_TYPE_VCN_ENC)
+			new_state.fw_based = VCN_DPG_STATE__PAUSE;
+		else if (ring->funcs->type == AMDGPU_RING_TYPE_VCN_JPEG)
+			new_state.jpeg = VCN_DPG_STATE__PAUSE;
 
 		amdgpu_vcn_pause_dpg_mode(adev, &new_state);
 	}