drm/i915: Pass the whole atomic state to intel_color_prepare_commit()

We'll have need to examine both the old and new crtc states in
intel_color_prepare_commit(), so let's just pass in the whole
atomic state.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611133344.30673-6-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

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

@@ -1902,15 +1902,20 @@ void intel_color_post_update(const struct intel_crtc_state *crtc_state)
 		i915->display.funcs.color->color_post_update(crtc_state);
 }
 
-void intel_color_prepare_commit(struct intel_crtc_state *crtc_state)
+void intel_color_prepare_commit(struct intel_atomic_state *state,
+				struct intel_crtc *crtc)
 {
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+	struct drm_i915_private *i915 = to_i915(state->base.dev);
+	struct intel_crtc_state *crtc_state =
+		intel_atomic_get_new_crtc_state(state, crtc);
 
 	if (!crtc_state->hw.active ||
 	    intel_crtc_needs_modeset(crtc_state))
 		return;
 
+	if (!intel_crtc_needs_color_update(crtc_state))
+		return;
+
 	if (!crtc_state->pre_csc_lut && !crtc_state->post_csc_lut)
 		return;
 

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

@@ -19,7 +19,8 @@ int intel_color_init(struct drm_i915_private *i915);
 void intel_color_crtc_init(struct intel_crtc *crtc);
 int intel_color_check(struct intel_atomic_state *state,
 		      struct intel_crtc *crtc);
-void intel_color_prepare_commit(struct intel_crtc_state *crtc_state);
+void intel_color_prepare_commit(struct intel_atomic_state *state,
+				struct intel_crtc *crtc);
 void intel_color_cleanup_commit(struct intel_crtc_state *crtc_state);
 bool intel_color_uses_dsb(const struct intel_crtc_state *crtc_state);
 void intel_color_wait_commit(const struct intel_crtc_state *crtc_state);

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

@@ -6718,7 +6718,7 @@ int intel_atomic_check(struct drm_device *dev,
 
 static int intel_atomic_prepare_commit(struct intel_atomic_state *state)
 {
-	struct intel_crtc_state *crtc_state;
+	struct intel_crtc_state __maybe_unused *crtc_state;
 	struct intel_crtc *crtc;
 	int i, ret;
 
@@ -6726,10 +6726,8 @@ static int intel_atomic_prepare_commit(struct intel_atomic_state *state)
 	if (ret < 0)
 		return ret;
 
-	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
-		if (intel_crtc_needs_color_update(crtc_state))
-			intel_color_prepare_commit(crtc_state);
-	}
+	for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i)
+		intel_color_prepare_commit(state, crtc);
 
 	return 0;
 }