[Intel-gfx] [PATCH] drm/i915: Fix ILK-IVB primary plane enable delays

[Juha-Pekka Heikkila]

Primary and sprite plane enable on ILK-IVB may take two frames to complete

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103925
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
---
 drivers/gpu/drm/i915/intel_display.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3b70948..b46ab48 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10813,8 +10813,11 @@ int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_stat
 	 * Despite the w/a only being listed for IVB we assume that
 	 * the ILK/SNB note has similar ramifications, hence we apply
 	 * the w/a on all three platforms.
+	 *
+	 * With experimental results seems this is needed also for primary
+	 * plane, not only sprite plane.
 	 */
-	if (plane->id == PLANE_SPRITE0 &&
+	if (plane->id != PLANE_CURSOR &&
 	    (IS_GEN_RANGE(dev_priv, 5, 6) ||
 	     IS_IVYBRIDGE(dev_priv)) &&
 	    (turn_on || (!needs_scaling(old_plane_state) &&
-- 
2.7.4