drm/i915: Simplify intel_set_cdclk_{pre,post}_plane_update() calling convention

Move all the old vs. new state shenanigans
into intel_set_cdclk_{pre,post}_plane_update() so that the caller
doesn't need to know any of it.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200120174728.21095-9-ville.syrjala@linux.intel.comReviewed-by: José Roberto de Souza <jose.souza@intel.com>

drivers/gpu/drm/i915/display/intel_cdclk.c

@@ -1903,41 +1903,41 @@ static void intel_set_cdclk(struct drm_i915_private *dev_priv,
 }
 
 /**
- * intel_set_cdclk_pre_plane_update - Push the CDCLK configuration to the hardware
- * @dev_priv: i915 device
- * @old_state: old CDCLK configuration
- * @new_state: new CDCLK configuration
- * @pipe: pipe with which to synchronize the update
+ * intel_set_cdclk_pre_plane_update - Push the CDCLK state to the hardware
+ * @state: intel atomic state
  *
- * Program the hardware before updating the HW plane state based on the passed
- * in CDCLK configuration, if necessary.
+ * Program the hardware before updating the HW plane state based on the
+ * new CDCLK state, if necessary.
  */
 void
-intel_set_cdclk_pre_plane_update(struct drm_i915_private *dev_priv,
-				 const struct intel_cdclk_config *old_state,
-				 const struct intel_cdclk_config *new_state,
-				 enum pipe pipe)
+intel_set_cdclk_pre_plane_update(struct intel_atomic_state *state)
 {
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	/* called after intel_cdclk_swap_state()! */
+	const struct intel_cdclk_config *old_state = &state->cdclk.actual;
+	const struct intel_cdclk_config *new_state = &dev_priv->cdclk.actual;
+	enum pipe pipe = state->cdclk.pipe;
+
 	if (pipe == INVALID_PIPE || old_state->cdclk <= new_state->cdclk)
 		intel_set_cdclk(dev_priv, new_state, pipe);
 }
 
 /**
- * intel_set_cdclk_post_plane_update - Push the CDCLK configuration to the hardware
- * @dev_priv: i915 device
- * @old_state: old CDCLK configuration
- * @new_state: new CDCLK configuration
- * @pipe: pipe with which to synchronize the update
+ * intel_set_cdclk_post_plane_update - Push the CDCLK state to the hardware
+ * @state: intel atomic state
  *
- * Program the hardware after updating the HW plane state based on the passed
- * in CDCLK configuration, if necessary.
+ * Program the hardware before updating the HW plane state based on the
+ * new CDCLK state, if necessary.
  */
 void
-intel_set_cdclk_post_plane_update(struct drm_i915_private *dev_priv,
-				  const struct intel_cdclk_config *old_state,
-				  const struct intel_cdclk_config *new_state,
-				  enum pipe pipe)
+intel_set_cdclk_post_plane_update(struct intel_atomic_state *state)
 {
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	/* called after intel_cdclk_swap_state()! */
+	const struct intel_cdclk_config *old_state = &state->cdclk.actual;
+	const struct intel_cdclk_config *new_state = &dev_priv->cdclk.actual;
+	enum pipe pipe = state->cdclk.pipe;
+
 	if (pipe != INVALID_PIPE && old_state->cdclk > new_state->cdclk)
 		intel_set_cdclk(dev_priv, new_state, pipe);
 }

drivers/gpu/drm/i915/display/intel_cdclk.h

@@ -33,16 +33,8 @@ bool intel_cdclk_needs_modeset(const struct intel_cdclk_config *a,
 			       const struct intel_cdclk_config *b);
 void intel_cdclk_clear_state(struct intel_atomic_state *state);
 void intel_cdclk_swap_state(struct intel_atomic_state *state);
-void
-intel_set_cdclk_pre_plane_update(struct drm_i915_private *dev_priv,
-				 const struct intel_cdclk_config *old_state,
-				 const struct intel_cdclk_config *new_state,
-				 enum pipe pipe);
-void
-intel_set_cdclk_post_plane_update(struct drm_i915_private *dev_priv,
-				  const struct intel_cdclk_config *old_state,
-				  const struct intel_cdclk_config *new_state,
-				  enum pipe pipe);
+void intel_set_cdclk_pre_plane_update(struct intel_atomic_state *state);
+void intel_set_cdclk_post_plane_update(struct intel_atomic_state *state);
 void intel_dump_cdclk_config(const struct intel_cdclk_config *cdclk_config,
 			     const char *context);
 int intel_modeset_calc_cdclk(struct intel_atomic_state *state);

drivers/gpu/drm/i915/display/intel_display.c

@@ -15600,10 +15600,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	if (state->modeset) {
 		drm_atomic_helper_update_legacy_modeset_state(dev, &state->base);
 
-		intel_set_cdclk_pre_plane_update(dev_priv,
-						 &state->cdclk.actual,
-						 &dev_priv->cdclk.actual,
-						 state->cdclk.pipe);
+		intel_set_cdclk_pre_plane_update(state);
 
 		/*
 		 * SKL workaround: bspec recommends we disable the SAGV when we
@@ -15639,10 +15636,7 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	if (state->modeset) {
 		intel_encoders_update_complete(state);
 
-		intel_set_cdclk_post_plane_update(dev_priv,
-						  &state->cdclk.actual,
-						  &dev_priv->cdclk.actual,
-						  state->cdclk.pipe);
+		intel_set_cdclk_post_plane_update(state);
 	}
 
 	/* FIXME: We should call drm_atomic_helper_commit_hw_done() here