drm/xe: Move d3cold_allowed decision all together.

And let's use the VRAM threshold to keep d3cold temporarily disabled.

With this we have the ability to run D3Cold experiments just by
touching the vram_d3cold_threshold sysfs entry.

Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/drm/xe/xe_pm.h b/drivers/gpu/drm/xe/xe_pm.h
index 08a633ce5145..6b9031f7af24 100644
--- a/drivers/gpu/drm/xe/xe_pm.h
+++ b/drivers/gpu/drm/xe/xe_pm.h
@@ -8,7 +8,12 @@
 
 #include <linux/pm_runtime.h>
 
-#define DEFAULT_VRAM_THRESHOLD 300 /* in MB */
+/*
+ * TODO: Threshold = 0 will block D3Cold.
+ *       Before we can move this to a higher value (like 300), we need to:
+ *           1. rewrite the VRAM save / restore to avoid buffer object locks
+ */
+#define DEFAULT_VRAM_THRESHOLD 0 /* in MB */
 
 struct xe_device;