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.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d2320b1..cc9e0c0 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/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 {