drm/i195/fbc: Add WaFbcNukeOnHostModify

[cascardo/linux.git] / drivers / gpu / drm / i915 / intel_pm.c

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 61113a2..074d6a5 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6737,11 +6737,21 @@ static void kabylake_init_clock_gating(struct drm_device *dev)
        if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
                I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
                           GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
+
+       /* WaFbcNukeOnHostModify:kbl */
+       I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
+                  ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
 }
 
 static void skylake_init_clock_gating(struct drm_device *dev)
 {
+       struct drm_i915_private *dev_priv = dev->dev_private;
+
        gen9_init_clock_gating(dev);
+
+       /* WaFbcNukeOnHostModify:skl */
+       I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
+                  ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
 }
 
 static void broadwell_init_clock_gating(struct drm_device *dev)