tests/drv_suspend: hibernation test

intel-gpu-tools currently has a bunch of tests for suspend,
but currently none (that I could find) for hibernate.

Attached is a rudimentary patch to add said test.  It does so
by repurposing the drv_suspend driver to handle both suspend
and hibernate, since the difference is miniscule.

I decided to split the suspend/autoresume functions in
igt_aux.c though, to be able to leave the igt_system_uspend_autoresume()
function unchanged (the other option would be to
introduce a boolean function argument and have that
decide what parameters to pass to rtcwake).

The timeout passed to rtcwake probably needs tuning (it might
even need to be dynamically adjusted, since the time hibernation takes
varies wildly depending on the amount of non-cache memory in use).

Signed-off-by: David Weinehall <david.weinehall@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/igt_aux.h b/lib/igt_aux.h
index 7f42b337..0c361f26 100644
--- a/lib/igt_aux.h
+++ b/lib/igt_aux.h
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2014 Intel Corporation
+ * Copyright © 2014, 2015 Intel Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -55,8 +55,9 @@ void igt_init_aperture_trashers(drm_intel_bufmgr *bufmgr);
 void igt_trash_aperture(void);
 void igt_cleanup_aperture_trashers(void);
 
-/* suspend and auto-resume system */
+/* suspend/hibernate and auto-resume system */
 void igt_system_suspend_autoresume(void);
+void igt_system_hibernate_autoresume(void);
 
 /* dropping priviledges */
 void igt_drop_root(void);