drm/i915: Disable the surface tile swizzling on Sandybridge.
I can't explain this, except that it makes my display correct. Signed-off-by: Eric Anholt <eric@anholt.net>
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@ -3419,7 +3419,7 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
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intel_wait_for_vblank(dev);
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if (HAS_PCH_SPLIT(dev)) {
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if (IS_IRONLAKE(dev)) {
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/* enable address swizzle for tiling buffer */
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temp = I915_READ(DISP_ARB_CTL);
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I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
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