drm/amdgpu: allow more APUs to do mode2 reset when go to S4

Skip mode2 reset only for IMU enabled APUs when do S4.

This patch is to fix the regression issue
https://gitlab.freedesktop.org/drm/amd/-/issues/2483
It is generated by commit b589626 ("drm/amdgpu: skip ASIC reset
for APUs when go to S4").

Fixes: b589626 ("drm/amdgpu: skip ASIC reset for APUs when go to S4")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2483
Tested-by:  Yuan  Perry <[email protected]>
Signed-off-by: Tim Huang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Cc: [email protected] # 6.1.x

Author: Tim Huang

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

@@ -981,7 +981,12 @@ static bool amdgpu_atcs_pci_probe_handle(struct pci_dev *pdev)
  */
 bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev)
 {
-	if (adev->flags & AMD_IS_APU)
+	if ((adev->flags & AMD_IS_APU) &&
+	    adev->gfx.imu.funcs) /* Not need to do mode2 reset for IMU enabled APUs */
+		return false;
+
+	if ((adev->flags & AMD_IS_APU) &&
+	    amdgpu_acpi_is_s3_active(adev))
 		return false;
 
 	if (amdgpu_sriov_vf(adev))