drm/amdgpu: re-enable suspend phase 2 for S0ix

This really needs to be done to properly tear down
the device.  SMC, PSP, and GFX are still problematic,
need to dig deeper into what aspect of them that is
problematic.
Acked-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2728,10 +2728,8 @@ static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev)
 {
 	int i, r;
 
-	if (adev->in_s0ix) {
+	if (adev->in_s0ix)
 		amdgpu_gfx_state_change_set(adev, sGpuChangeState_D3Entry);
-		return 0;
-	}
 
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.valid)
@@ -2755,6 +2753,14 @@ static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev)
 			adev->ip_blocks[i].status.hw = false;
 			continue;
 		}
+
+		/* XXX fix these remaining cases */
+		if (adev->in_s0ix &&
+		    (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC || /* breaks suspend */
+		     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP || /* breaks resume */
+		     adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX))  /* breaks suspend */
+			continue;
+
 		/* XXX handle errors */
 		r = adev->ip_blocks[i].version->funcs->suspend(adev);
 		/* XXX handle errors */