drm/i915: We implement WaFbcDisableDpfcClockGating on ilk

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
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 d212e42638d9e62c92d35fa6274b55bbca3e90ec..9b95f78d352aa9cdf40a3a08795ecf5a42f2c8f9 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4416,7 +4416,10 @@ static void ironlake_init_clock_gating(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
        uint32_t dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
 
-       /* Required for FBC */
+       /*
+        * Required for FBC
+        * WaFbcDisableDpfcClockGating:ilk
+        */
        dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
                   ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
                   ILK_DPFDUNIT_CLOCK_GATE_ENABLE;