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drm/i915: Fix SKL sprite disable double buffer register update

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Write the PLANE_SURF register instead of PLANE_CTL to arm the double
buffer regisrter update.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-03-19 17:57:14 +02:00 • committed by Daniel Vetter
commit 2ddc1dad39
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_sprite.c
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@ -301,8 +301,8 @@ skl_disable_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc)
I915_WRITE(PLANE_CTL(pipe, plane), 0);
/* Activate double buffered register update */
I915_WRITE(PLANE_CTL(pipe, plane), 0);
POSTING_READ(PLANE_CTL(pipe, plane));
I915_WRITE(PLANE_SURF(pipe, plane), 0);
POSTING_READ(PLANE_SURF(pipe, plane));
intel_update_sprite_watermarks(drm_plane, crtc, 0, 0, 0, false, false);
}