diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2013-12-05 15:51:41 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-12-17 13:17:58 +0100 |
| commit | 1bd09ec7ad314313f15db733c7e9cb2225d95453 (patch) | |
| tree | 39431bf05c0abb9ad9c93fc590441dfa1300434d /drivers/gpu/drm/i915/intel_sprite.c | |
| parent | efb31d15dc16150a7a41947d712822e703c3e923 (diff) | |
drm/i915: Avoid underruns when disabling sprites
As the watermark registers aren't double bufferd, clearing the
watermarks immediately after writing the sprite registers can be
hazardous.
Until we have something better, add a wait for vblank between the
two steps to make sure the sprite no longer needs the watermark
levels before we clear them.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sprite.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sprite.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index 050ec29e3150..606c27b7ae8f 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -336,6 +336,12 @@ ivb_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) I915_MODIFY_DISPBASE(SPRSURF(pipe), 0); POSTING_READ(SPRSURF(pipe)); + /* + * Avoid underruns when disabling the sprite. + * FIXME remove once watermark updates are done properly. + */ + intel_wait_for_vblank(dev, pipe); + intel_update_sprite_watermarks(plane, crtc, 0, 0, false, false); } @@ -503,6 +509,12 @@ ilk_disable_plane(struct drm_plane *plane, struct drm_crtc *crtc) I915_MODIFY_DISPBASE(DVSSURF(pipe), 0); POSTING_READ(DVSSURF(pipe)); + /* + * Avoid underruns when disabling the sprite. + * FIXME remove once watermark updates are done properly. + */ + intel_wait_for_vblank(dev, pipe); + intel_update_sprite_watermarks(plane, crtc, 0, 0, false, false); } |