diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 48283167c19..fdc2839448a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -242,6 +242,12 @@ 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 */ + I915_WRITE(ILK_DSPCLK_GATE_D, + I915_READ(ILK_DSPCLK_GATE_D) & + ~ILK_DPFCUNIT_CLOCK_GATE_DISABLE); + DRM_DEBUG_KMS("disabled FBC\n"); } } @@ -270,6 +276,11 @@ static void gen7_enable_fbc(struct drm_crtc *crtc, unsigned long interval) /* WaFbcAsynchFlipDisableFbcQueue */ I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS); + /* WaFbcDisableDpfcClockGating */ + I915_WRITE(ILK_DSPCLK_GATE_D, + I915_READ(ILK_DSPCLK_GATE_D) | + ILK_DPFCUNIT_CLOCK_GATE_DISABLE); + I915_WRITE(SNB_DPFC_CTL_SA, SNB_CPU_FENCE_ENABLE | obj->fence_reg); I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); |