drm/i915: Disable tiling on IGDNG for now

Swizzle bit detection not working right on it.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 540dd33..07d976b 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -170,6 +170,13 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev)
                }
        }
 
+       /* FIXME: check with memory config on IGDNG */
+       if (IS_IGDNG(dev)) {
+               DRM_ERROR("disable tiling on IGDNG...\n");
+               swizzle_x = I915_BIT_6_SWIZZLE_UNKNOWN;
+               swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
+       }
+
        dev_priv->mm.bit_6_swizzle_x = swizzle_x;
        dev_priv->mm.bit_6_swizzle_y = swizzle_y;
 }