From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Now that we've plugged the mmio vs. ring flip race, we shouldn't need
these vblank waits in the modeset codepaths anymore. So get rid of
them.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 33d21bf..9b181fc 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1901,7 +1901,6 @@ static void intel_enable_primary_hw_plane(struct
drm_i915_private *dev_priv,
I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
intel_flush_primary_plane(dev_priv, plane);
- intel_wait_for_vblank(dev_priv->dev, pipe);
}
/**
@@ -1931,7 +1930,6 @@ static void intel_disable_primary_hw_plane(struct
drm_i915_private *dev_priv,
I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
intel_flush_primary_plane(dev_priv, plane);
- intel_wait_for_vblank(dev_priv->dev, pipe);
}
static bool need_vtd_wa(struct drm_device *dev)
@@ -3706,16 +3704,6 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
if (HAS_PCH_CPT(dev))
cpt_verify_modeset(dev, intel_crtc->pipe);
- /*
- * There seems to be a race in PCH platform hw (at least on some
- * outputs) where an enabled pipe still completes any pageflip right
- * away (as if the pipe is off) instead of waiting for vblank. As soon
- * as the first vblank happend, everything works as expected. Hence just
- * wait for one vblank before returning to avoid strange things
- * happening.
- */
- intel_wait_for_vblank(dev, intel_crtc->pipe);
-
drm_vblank_on(dev, pipe);
}
--
1.8.3.2
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