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drm/i915: Fix ILK-IVB primary plane enable delays 

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@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1545305168-6047-1-git-send-email-juhapekka.heikkila@gmail.com
This commit is contained in:
Juha-Pekka Heikkila 2018-12-20 13:26:08 +02:00 committed by Ville Syrjälä
parent 4a8ab5ea0c
commit d8af327087
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -10851,8 +10851,11 @@ 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) &&