[Intel-gfx] [PATCH 3/8] drm/i915: Flush the plane enable using the DSPCNTR latch

[Chris Wilson]

References: https://bugs.freedesktop.org/show_bug.cgi?id=34601
Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_display.c |   24 ++++++++++++------------
 1 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 841f039..2f63999 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1560,6 +1560,17 @@ static void intel_disable_pipe(struct drm_i915_private *dev_priv,
 	intel_wait_for_pipe_off(dev_priv->dev, pipe);
 }
 
+/*
+ * Plane regs are double buffered, going from enabled<->disabled needs a
+ * trigger in order to latch.  The display address reg provides this.
+ */
+static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
+				      enum plane plane)
+{
+	u32 reg = DSPADDR(plane);
+	I915_WRITE(reg, I915_READ(reg));
+}
+
 /**
  * intel_enable_plane - enable a display plane on a given pipe
  * @dev_priv: i915 private structure
@@ -1583,18 +1594,7 @@ static void intel_enable_plane(struct drm_i915_private *dev_priv,
 		return;
 
 	I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
-	intel_wait_for_vblank(dev_priv->dev, pipe);
-}
-
-/*
- * Plane regs are double buffered, going from enabled->disabled needs a
- * trigger in order to latch.  The display address reg provides this.
- */
-static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
-				      enum plane plane)
-{
-	u32 reg = DSPADDR(plane);
-	I915_WRITE(reg, I915_READ(reg));
+	intel_flush_display_plane(dev_priv, plane);
 }
 
 /**
-- 
1.7.2.3