drm/amd/pm: Disable GFXOFF when GFX DPM or PG disabled

Check GFX DPM and PG bit before enable GFXOFF on Vangogh
smu post init.
Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c

@@ -1712,11 +1712,17 @@ static int vangogh_post_smu_init(struct smu_context *smu)
 		adev->gfx.config.max_sh_per_se * adev->gfx.config.max_shader_engines;
 
 	/* allow message will be sent after enable message on Vangogh*/
+	if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_DPM_GFXCLK_BIT) &&
+			(adev->pg_flags & AMD_PG_SUPPORT_GFX_PG)) {
 		ret = smu_cmn_send_smc_msg(smu, SMU_MSG_EnableGfxOff, NULL);
 		if (ret) {
 			dev_err(adev->dev, "Failed to Enable GfxOff!\n");
 			return ret;
 		}
+	} else {
+		adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
+		dev_info(adev->dev, "If GFX DPM or power gate disabled, disable GFXOFF\n");
+	}
 
 	/* if all CUs are active, no need to power off any WGPs */
 	if (total_cu == adev->gfx.cu_info.number)