drm/i915: Pass dev_priv to intel_init_pm()

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/1477946245-14134-27-git-send-email-ville.syrjala@linux.intel.comReviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_display.c

@@ -16419,7 +16419,7 @@ int intel_modeset_init(struct drm_device *dev)
 
 	intel_init_quirks(dev);
 
-	intel_init_pm(dev);
+	intel_init_pm(dev_priv);
 
 	if (INTEL_INFO(dev)->num_pipes == 0)
 		return 0;

drivers/gpu/drm/i915/intel_drv.h

@@ -1707,7 +1707,7 @@ void intel_init_clock_gating(struct drm_i915_private *dev_priv);
 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);
+void intel_init_pm(struct drm_i915_private *dev_priv);
 void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv);
 void intel_pm_setup(struct drm_device *dev);
 void intel_gpu_ips_init(struct drm_i915_private *dev_priv);

drivers/gpu/drm/i915/intel_pm.c

@@ -7677,10 +7677,8 @@ void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
 }
 
 /* Set up chip specific power management-related functions */
-void intel_init_pm(struct drm_device *dev)
+void intel_init_pm(struct drm_i915_private *dev_priv)
 {
-	struct drm_i915_private *dev_priv = to_i915(dev);
-
 	intel_fbc_init(dev_priv);
 
 	/* For cxsr */
@@ -7690,7 +7688,7 @@ void intel_init_pm(struct drm_device *dev)
 		i915_ironlake_get_mem_freq(dev_priv);
 
 	/* For FIFO watermark updates */
-	if (INTEL_INFO(dev)->gen >= 9) {
+	if (INTEL_GEN(dev_priv) >= 9) {
 		skl_setup_wm_latency(dev_priv);
 		dev_priv->display.update_wm = skl_update_wm;
 		dev_priv->display.compute_global_watermarks = skl_compute_wm;
@@ -7741,7 +7739,7 @@ void intel_init_pm(struct drm_device *dev)
 		dev_priv->display.update_wm = i9xx_update_wm;
 		dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
 	} else if (IS_GEN2(dev_priv)) {
-		if (INTEL_INFO(dev)->num_pipes == 1) {
+		if (INTEL_INFO(dev_priv)->num_pipes == 1) {
 			dev_priv->display.update_wm = i845_update_wm;
 			dev_priv->display.get_fifo_size = i845_get_fifo_size;
 		} else {