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drm/i915; Don't apply Ironlake FDI clock workaround to Sandybridge
Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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2 changed files with 5 additions and 3 deletions
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@ -1321,6 +1321,7 @@ static inline void i915_write(struct drm_i915_private *dev_priv, u32 reg,
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#define INTEL_PCH_TYPE(dev) (((struct drm_i915_private *)(dev)->dev_private)->pch_type)
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#define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
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#define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
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#define PRIMARY_RINGBUFFER_SIZE (128*1024)
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@ -2212,6 +2212,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
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udelay(100);
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/* Ironlake workaround, disable clock pointer after downing FDI */
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if (HAS_PCH_IBX(dev))
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I915_WRITE(FDI_RX_CHICKEN(pipe),
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I915_READ(FDI_RX_CHICKEN(pipe) &
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~FDI_RX_PHASE_SYNC_POINTER_ENABLE));
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