drm/i915/chv: remove pre-production hardware workarounds

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[danvet: Appease gcc and remove the unused variable.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_pm.c

@@ -5061,7 +5061,6 @@ static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv)
 	struct drm_device *dev = dev_priv->dev;
 	u32 val, rp0;
 
-	if (dev->pdev->revision >= 0x20) {
 	val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE);
 
 	switch (INTEL_INFO(dev)->eu_total) {
@@ -5080,13 +5079,9 @@ static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv)
 		rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT);
 		break;
 	}
+
 	rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK);
-	} else {
-		/* For pre-production hardware */
-		val = vlv_punit_read(dev_priv, PUNIT_GPU_STATUS_REG);
-		rp0 = (val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) &
-		       PUNIT_GPU_STATUS_MAX_FREQ_MASK;
-	}
+
 	return rp0;
 }
 
@@ -5102,18 +5097,11 @@ static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv)
 
 static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv)
 {
-	struct drm_device *dev = dev_priv->dev;
 	u32 val, rp1;
 
-	if (dev->pdev->revision >= 0x20) {
 	val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE);
 	rp1 = (val & FB_GFX_FREQ_FUSE_MASK);
-	} else {
-		/* For pre-production hardware */
-		val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
-		rp1 = ((val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) &
-		       PUNIT_GPU_STATUS_MAX_FREQ_MASK);
-	}
+
 	return rp1;
 }