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drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible

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When the plane is invisible we may have all sorts of bogus stuff
in the coordinates, which we must ignore or else we might fail the
plane update. This started to happen on SKL when I moved the plane
offset computation to happen in the check phase. Previously we
happily ignored it all since we never called the update_plane hook
with an invisible plane.

Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: b63a16f6cd ("drm/i915: Compute display surface offset in the plane check hook for SKL+")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98258
Testcase: igt/pm_rpm/legacy-planes
Testcase: igt/pm_rpm/universal-planes
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1478550057-24864-3-git-send-email-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2016-11-07 22:20:54 +02:00 committed by Matt Roper
parent b368f53378
commit a5e4c7d0aa
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/i915/intel_display.c
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@ -2965,6 +2965,9 @@ int skl_check_plane_surface(struct intel_plane_state *plane_state)
unsigned int rotation = plane_state->base.rotation;
int ret;
if (!plane_state->base.visible)
return 0;
/* Rotate src coordinates to match rotated GTT view */
if (drm_rotation_90_or_270(rotation))
drm_rect_rotate(&plane_state->base.src,