drm/i915: remove HAS_PC8 check

Now that PC8 is part of runtime PM, the check is useless.
Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: NImre Deak <imre.deak@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.c

@@ -842,10 +842,7 @@ static void snb_runtime_suspend(struct drm_i915_private *dev_priv)
 
 static void hsw_runtime_suspend(struct drm_i915_private *dev_priv)
 {
-	struct drm_device *dev = dev_priv->dev;
-
-	if (HAS_PC8(dev))
-		hsw_enable_pc8(dev_priv);
+	hsw_enable_pc8(dev_priv);
 }
 
 static void snb_runtime_resume(struct drm_i915_private *dev_priv)
@@ -862,10 +859,7 @@ static void snb_runtime_resume(struct drm_i915_private *dev_priv)
 
 static void hsw_runtime_resume(struct drm_i915_private *dev_priv)
 {
-	struct drm_device *dev = dev_priv->dev;
-
-	if (HAS_PC8(dev))
-		hsw_disable_pc8(dev_priv);
+	hsw_disable_pc8(dev_priv);
 }
 
 static int intel_runtime_suspend(struct device *device)

drivers/gpu/drm/i915/i915_drv.h

@@ -1865,7 +1865,6 @@ struct drm_i915_cmd_table {
 #define HAS_DDI(dev)		(INTEL_INFO(dev)->has_ddi)
 #define HAS_FPGA_DBG_UNCLAIMED(dev)	(INTEL_INFO(dev)->has_fpga_dbg)
 #define HAS_PSR(dev)		(IS_HASWELL(dev) || IS_BROADWELL(dev))
-#define HAS_PC8(dev)		(IS_HASWELL(dev)) /* XXX HSW:ULX */
 #define HAS_RUNTIME_PM(dev)	(IS_GEN6(dev) || IS_HASWELL(dev))
 
 #define INTEL_PCH_DEVICE_ID_MASK		0xff00

drivers/gpu/drm/i915/intel_display.c

@@ -7039,8 +7039,6 @@ void hsw_enable_pc8(struct drm_i915_private *dev_priv)
 	struct drm_device *dev = dev_priv->dev;
 	uint32_t val;
 
-	WARN_ON(!HAS_PC8(dev));
-
 	DRM_DEBUG_KMS("Enabling package C8+\n");
 
 	if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
@@ -7059,8 +7057,6 @@ void hsw_disable_pc8(struct drm_i915_private *dev_priv)
 	struct drm_device *dev = dev_priv->dev;
 	uint32_t val;
 
-	WARN_ON(!HAS_PC8(dev));
-
 	DRM_DEBUG_KMS("Disabling package C8+\n");
 
 	hsw_restore_lcpll(dev_priv);