drm/i915: Don't write IVB_FBC_RT_BASE

We use nuking instead of render tracking on IVB+, so there's
no point in writing IVB_FBC_RT_BASE.

v2: Drop the IVB_FBC_RT_BASE write too
v3: Move the SNB stuff elsewhere, leaving only IVB+ here

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index b9b4fe4e6313e8794fcb0729121fa42e51112668..55874d225273cc77504d8e09de82564934118568 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -283,8 +283,6 @@ static void gen7_enable_fbc(struct drm_crtc *crtc)
        struct drm_i915_gem_object *obj = intel_fb->obj;
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
-       I915_WRITE(IVB_FBC_RT_BASE, i915_gem_obj_ggtt_offset(obj));
-
        I915_WRITE(ILK_DPFC_CONTROL, DPFC_CTL_EN | DPFC_CTL_LIMIT_1X |
                   IVB_DPFC_CTL_FENCE_EN |
                   intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT);