tests/kms_frontbuffer_tracking: Don't unset mode after reading CRC

Until the previous commit we had to disable the mode after reading CRC
because otherwise we might not have been enable features correctly.

Now we can just stage the disable without applying it, so each subtest
can set its desired mode and igt_display will update the state as
required.

Behavior with legacy PSR:
- Modeset enable, read CRC, enable legacy PSR switch, disable CRTC if
  using legacy PSR by calling igt_display_commit. Next enable CRTC will
  enable PSR.

Behavior with debugfs PSR:
- Modeset enable
- Read CRC
- Enable debugfs PSR switch. PSR enabled.
- Next commit will be done by test, which can disable the mode or set a
  mode. The latter case will be a compatible mode, in which case we
  avoid the modeset.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/kms_frontbuffer_tracking.c b/tests/kms_frontbuffer_tracking.c
index a570f93a..921aaffc 100644
--- a/tests/kms_frontbuffer_tracking.c
+++ b/tests/kms_frontbuffer_tracking.c
@@ -1220,7 +1220,7 @@ static void init_blue_crc(enum pixel_format format)
 
 	print_crc("Blue CRC:  ", &blue_crcs[format].crc);
 
-	unset_all_crtcs();
+	igt_display_reset(&drm.display);
 
 	igt_remove_fb(drm.fd, &blue);
 
@@ -1272,7 +1272,7 @@ static void init_crcs(enum pixel_format format,
 		print_crc("", &pattern->crcs[format][r]);
 	}
 
-	unset_all_crtcs();
+	igt_display_reset(&drm.display);
 
 	for (r = 0; r < pattern->n_rects; r++)
 		igt_remove_fb(drm.fd, &tmp_fbs[r]);