drm/i915/psr: Split intel_psr2_config_valid for panel replay

Part of intel_psr2_config_valid is valid for panel replay. rename it as
intel_sel_update_config_valid. Split psr2 specific part and name it as
intel_psr2_config_valid.

v3:
  - move early transport check to psr2 specific check
  - check intel_psr2_config_valid only for non-Panel Replay case
v2:
  - use psr2_global_enabled for panel replay as well
  - goto unsupported instead of return when global enabled check fails
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240510093823.3146455-12-jouni.hogander@intel.com

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

@@ -1147,9 +1147,6 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (psr2_su_region_et_valid(intel_dp))
-		crtc_state->enable_psr2_su_region_et = true;
-
 	return crtc_state->enable_psr2_sel_fetch = true;
 }
 
@@ -1520,11 +1517,6 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (!psr2_global_enabled(intel_dp)) {
-		drm_dbg_kms(&dev_priv->drm, "PSR2 disabled by flag\n");
-		return false;
-	}
-
 	/*
 	 * DSC and PSR2 cannot be enabled simultaneously. If a requested
 	 * resolution requires DSC to be enabled, priority is given to DSC
@@ -1537,12 +1529,6 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (crtc_state->crc_enabled) {
-		drm_dbg_kms(&dev_priv->drm,
-			    "PSR2 not enabled because it would inhibit pipe CRC calculation\n");
-		return false;
-	}
-
 	if (DISPLAY_VER(dev_priv) >= 12) {
 		psr_max_h = 5120;
 		psr_max_v = 3200;
@@ -1593,30 +1579,60 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (HAS_PSR2_SEL_FETCH(dev_priv)) {
-		if (!intel_psr2_sel_fetch_config_valid(intel_dp, crtc_state) &&
-		    !HAS_PSR_HW_TRACKING(dev_priv)) {
-			drm_dbg_kms(&dev_priv->drm,
-				    "PSR2 not enabled, selective fetch not valid and no HW tracking available\n");
-			return false;
-		}
-	}
-
-	if (!psr2_granularity_check(intel_dp, crtc_state)) {
-		drm_dbg_kms(&dev_priv->drm, "PSR2 not enabled, SU granularity not compatible\n");
-		goto unsupported;
-	}
-
 	if (!crtc_state->enable_psr2_sel_fetch &&
 	    (crtc_hdisplay > psr_max_h || crtc_vdisplay > psr_max_v)) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "PSR2 not enabled, resolution %dx%d > max supported %dx%d\n",
 			    crtc_hdisplay, crtc_vdisplay,
 			    psr_max_h, psr_max_v);
-		goto unsupported;
+		return false;
 	}
 
 	tgl_dc3co_exitline_compute_config(intel_dp, crtc_state);
+
+	if (psr2_su_region_et_valid(intel_dp))
+		crtc_state->enable_psr2_su_region_et = true;
+
+	return true;
+}
+
+static bool intel_sel_update_config_valid(struct intel_dp *intel_dp,
+					  struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+	if (HAS_PSR2_SEL_FETCH(dev_priv) &&
+	    !intel_psr2_sel_fetch_config_valid(intel_dp, crtc_state) &&
+	    !HAS_PSR_HW_TRACKING(dev_priv)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Selective update not enabled, selective fetch not valid and no HW tracking available\n");
+		goto unsupported;
+	}
+
+	if (!psr2_global_enabled(intel_dp)) {
+		drm_dbg_kms(&dev_priv->drm, "Selective update disabled by flag\n");
+		goto unsupported;
+	}
+
+	if (!crtc_state->has_panel_replay && !intel_psr2_config_valid(intel_dp, crtc_state))
+		goto unsupported;
+
+	if (crtc_state->has_panel_replay && (DISPLAY_VER(dev_priv) < 14 ||
+					     !intel_dp->psr.sink_panel_replay_su_support))
+		goto unsupported;
+
+	if (crtc_state->crc_enabled) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Selective update not enabled because it would inhibit pipe CRC calculation\n");
+		goto unsupported;
+	}
+
+	if (!psr2_granularity_check(intel_dp, crtc_state)) {
+		drm_dbg_kms(&dev_priv->drm,
+			    "Selective update not enabled, SU granularity not compatible\n");
+		goto unsupported;
+	}
+
 	return true;
 
 unsupported:
@@ -1698,7 +1714,7 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
 	if (!crtc_state->has_psr)
 		return;
 
-	crtc_state->has_sel_update = intel_psr2_config_valid(intel_dp, crtc_state);
+	crtc_state->has_sel_update = intel_sel_update_config_valid(intel_dp, crtc_state);
 }
 
 void intel_psr_get_config(struct intel_encoder *encoder,