drm/i915: Pass dev_priv to intel_suspend_hw()

Unify our approach to things by passing around dev_priv instead of dev.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1477946245-14134-25-git-send-email-ville.syrjala@linux.intel.comReviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_drv.c

@@ -1435,7 +1435,7 @@ static int i915_drm_suspend(struct drm_device *dev)
 
 	intel_suspend_encoders(dev_priv);
 
-	intel_suspend_hw(dev);
+	intel_suspend_hw(dev_priv);
 
 	i915_gem_suspend_gtt_mappings(dev);
 

drivers/gpu/drm/i915/intel_drv.h

@@ -1704,7 +1704,7 @@ bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
 
 /* intel_pm.c */
 void intel_init_clock_gating(struct drm_i915_private *dev_priv);
-void intel_suspend_hw(struct drm_device *dev);
+void intel_suspend_hw(struct drm_i915_private *dev_priv);
 int ilk_wm_max_level(const struct drm_i915_private *dev_priv);
 void intel_update_watermarks(struct intel_crtc *crtc);
 void intel_init_pm(struct drm_device *dev);

drivers/gpu/drm/i915/intel_pm.c

@@ -7139,10 +7139,8 @@ static void lpt_init_clock_gating(struct drm_i915_private *dev_priv)
 		   TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
 }
 
-static void lpt_suspend_hw(struct drm_device *dev)
+static void lpt_suspend_hw(struct drm_i915_private *dev_priv)
 {
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
 	if (HAS_PCH_LPT_LP(dev_priv)) {
 		uint32_t val = I915_READ(SOUTH_DSPCLK_GATE_D);
 
@@ -7626,10 +7624,10 @@ void intel_init_clock_gating(struct drm_i915_private *dev_priv)
 	dev_priv->display.init_clock_gating(dev_priv);
 }
 
-void intel_suspend_hw(struct drm_device *dev)
+void intel_suspend_hw(struct drm_i915_private *dev_priv)
 {
-	if (HAS_PCH_LPT(to_i915(dev)))
-		lpt_suspend_hw(dev);
+	if (HAS_PCH_LPT(dev_priv))
+		lpt_suspend_hw(dev_priv);
 }
 
 static void nop_init_clock_gating(struct drm_i915_private *dev_priv)