drm/i915: Remove WaFbcDisableDpfcClockGating on IVB

Production IVB does not need it. I confirmed this with Art.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 0 insertions, 10 deletions

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2f26d6c2fc93..c325a57b89b5 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -254,12 +254,6 @@ static void ironlake_disable_fbc(struct drm_device *dev)
                 dpfc_ctl &= ~DPFC_CTL_EN;
                 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
 
-                if (IS_IVYBRIDGE(dev))
-                        /* WaFbcDisableDpfcClockGating:ivb */
-                        I915_WRITE(ILK_DSPCLK_GATE_D,
-                                   I915_READ(ILK_DSPCLK_GATE_D) &
-                                   ~ILK_DPFCUNIT_CLOCK_GATE_DISABLE);
-
                 if (IS_HASWELL(dev))
                         /* WaFbcDisableDpfcClockGating:hsw */
                         I915_WRITE(HSW_CLKGATE_DISABLE_PART_1,
@@ -295,10 +289,6 @@ static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
         if (IS_IVYBRIDGE(dev)) {
                 /* WaFbcAsynchFlipDisableFbcQueue:ivb */
                 I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS);
-                /* WaFbcDisableDpfcClockGating:ivb */
-                I915_WRITE(ILK_DSPCLK_GATE_D,
-                           I915_READ(ILK_DSPCLK_GATE_D) |
-                           ILK_DPFCUNIT_CLOCK_GATE_DISABLE);
         } else {
                 /* WaFbcAsynchFlipDisableFbcQueue:hsw */
                 I915_WRITE(HSW_PIPE_SLICE_CHICKEN_1(intel_crtc->pipe),