patches.baytrail/0556-drm-i915-Calculate-the-sprite-WM-based-on-the-source.patch

From ed1197848495e5949c4295ece90cccf9f59b6136 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Fri, 5 Jul 2013 11:57:15 +0300
Subject: drm/i915: Calculate the sprite WM based on the source width instead
 of the destination width
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Using the destination width in the sprite WM calculations isn't correct.
We should be using the source width.

Note: This doesn't affect hsw since it does not support sprite
scaling.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Add review note from Paulo to the commit message.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

(cherry picked from commit ec4c4aa14720b284af8eadd2d65d5131519fc29f)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_sprite.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 3e3a6d01cff6..5a36afb6ea03 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -108,7 +108,7 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_framebuffer *fb,
 
 	sprctl |= SP_ENABLE;
 
-	intel_update_sprite_watermarks(dev, pipe, crtc_w, pixel_size, true,
+	intel_update_sprite_watermarks(dev, pipe, src_w, pixel_size, true,
 				       src_w != crtc_w || src_h != crtc_h);
 
 	/* Sizes are 0 based */
@@ -263,7 +263,7 @@ ivb_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb,
 	if (IS_HASWELL(dev))
 		sprctl |= SPRITE_PIPE_CSC_ENABLE;
 
-	intel_update_sprite_watermarks(dev, pipe, crtc_w, pixel_size, true,
+	intel_update_sprite_watermarks(dev, pipe, src_w, pixel_size, true,
 				       src_w != crtc_w || src_h != crtc_h);
 
 	/* Sizes are 0 based */
@@ -452,7 +452,7 @@ ilk_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb,
 		dvscntr |= DVS_TRICKLE_FEED_DISABLE; /* must disable */
 	dvscntr |= DVS_ENABLE;
 
-	intel_update_sprite_watermarks(dev, pipe, crtc_w, pixel_size, true,
+	intel_update_sprite_watermarks(dev, pipe, src_w, pixel_size, true,
 				       src_w != crtc_w || src_h != crtc_h);
 
 	/* Sizes are 0 based */
-- 
1.8.5.rc3