drm/i915: Extract intel_cdclk_update_hw_state()

Hoist the cdclk stuff into a separate function from
intel_modeset_readout_hw_state() so that the details
are better hidden inside intel_cdclk.c.

Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306163420.3961-10-ville.syrjala@linux.intel.com

Author: vsyrjala

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

@@ -2788,7 +2788,7 @@ static int intel_planes_min_cdclk(const struct intel_crtc_state *crtc_state)
 	return min_cdclk;
 }
 
-int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
+static int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 {
 	int min_cdclk;
 
@@ -3340,6 +3340,33 @@ int intel_modeset_calc_cdclk(struct intel_atomic_state *state)
 	return 0;
 }
 
+void intel_cdclk_update_hw_state(struct intel_display *display)
+{
+	struct intel_cdclk_state *cdclk_state =
+		to_intel_cdclk_state(display->cdclk.obj.state);
+	struct intel_crtc *crtc;
+
+	cdclk_state->active_pipes = 0;
+
+	for_each_intel_crtc(display->drm, crtc) {
+		const struct intel_crtc_state *crtc_state =
+			to_intel_crtc_state(crtc->base.state);
+		enum pipe pipe = crtc->pipe;
+		int min_cdclk = 0;
+
+		if (crtc_state->hw.active) {
+			cdclk_state->active_pipes |= BIT(pipe);
+
+			min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
+			if (drm_WARN_ON(display->drm, min_cdclk < 0))
+				min_cdclk = 0;
+		}
+
+		cdclk_state->min_cdclk[pipe] = min_cdclk;
+		cdclk_state->min_voltage_level[pipe] = crtc_state->min_voltage_level;
+	}
+}
+
 void intel_cdclk_crtc_disable_noatomic(struct intel_crtc *crtc)
 {
 	struct intel_display *display = to_intel_display(crtc);

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

@@ -59,7 +59,6 @@ struct intel_cdclk_state {
 	bool disable_pipes;
 };
 
-int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state);
 void intel_cdclk_init_hw(struct intel_display *display);
 void intel_cdclk_uninit_hw(struct intel_display *display);
 void intel_init_cdclk_hooks(struct intel_display *display);
@@ -84,6 +83,7 @@ int intel_cdclk_atomic_check(struct intel_atomic_state *state,
 int intel_cdclk_state_set_joined_mbus(struct intel_atomic_state *state, bool joined_mbus);
 struct intel_cdclk_state *
 intel_atomic_get_cdclk_state(struct intel_atomic_state *state);
+void intel_cdclk_update_hw_state(struct intel_display *display);
 void intel_cdclk_crtc_disable_noatomic(struct intel_crtc *crtc);
 
 #define to_intel_cdclk_state(global_state) \

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

@@ -693,8 +693,6 @@ static void readout_plane_state(struct drm_i915_private *i915)
 static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 {
 	struct intel_display *display = &i915->display;
-	struct intel_cdclk_state *cdclk_state =
-		to_intel_cdclk_state(i915->display.cdclk.obj.state);
 	struct intel_dbuf_state *dbuf_state =
 		to_intel_dbuf_state(i915->display.dbuf.obj.state);
 	struct intel_pmdemand_state *pmdemand_state =
@@ -730,7 +728,6 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 			    str_enabled_disabled(crtc_state->hw.active));
 	}
 
-	cdclk_state->active_pipes = active_pipes;
 	dbuf_state->active_pipes = active_pipes;
 
 	readout_plane_state(i915);
@@ -833,7 +830,6 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 		struct intel_crtc_state *crtc_state =
 			to_intel_crtc_state(crtc->base.state);
 		struct intel_plane *plane;
-		int min_cdclk = 0;
 
 		if (crtc_state->hw.active) {
 			/*
@@ -882,22 +878,14 @@ static void intel_modeset_readout_hw_state(struct drm_i915_private *i915)
 				    crtc_state->min_cdclk[plane->id]);
 		}
 
-		if (crtc_state->hw.active) {
-			min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
-			if (drm_WARN_ON(&i915->drm, min_cdclk < 0))
-				min_cdclk = 0;
-		}
-
-		cdclk_state->min_cdclk[crtc->pipe] = min_cdclk;
-		cdclk_state->min_voltage_level[crtc->pipe] =
-			crtc_state->min_voltage_level;
-
 		intel_pmdemand_update_port_clock(display, pmdemand_state, pipe,
 						 crtc_state->port_clock);
 
 		intel_bw_crtc_update(bw_state, crtc_state);
 	}
 
+	intel_cdclk_update_hw_state(display);
+
 	intel_pmdemand_init_pmdemand_params(display, pmdemand_state);
 }