drm/i915/debugfs: clean up LPSP capable

Clean up the LPSP capability printout. No functional changes.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/097390f12da8de57c9d52ad675309d0422dec8fb.1630327990.git.jani.nikula@intel.com

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

@@ -2224,14 +2224,12 @@ static int i915_psr_status_show(struct seq_file *m, void *data)
 }
 DEFINE_SHOW_ATTRIBUTE(i915_psr_status);
 
-#define LPSP_CAPABLE(COND) (COND ? seq_puts(m, "LPSP: capable\n") : \
-				seq_puts(m, "LPSP: incapable\n"))
-
 static int i915_lpsp_capability_show(struct seq_file *m, void *data)
 {
 	struct drm_connector *connector = m->private;
 	struct drm_i915_private *i915 = to_i915(connector->dev);
 	struct intel_encoder *encoder;
+	bool lpsp_capable = false;
 
 	encoder = intel_attached_encoder(to_intel_connector(connector));
 	if (!encoder)
@@ -2240,35 +2238,27 @@ static int i915_lpsp_capability_show(struct seq_file *m, void *data)
 	if (connector->status != connector_status_connected)
 		return -ENODEV;
 
-	if (DISPLAY_VER(i915) >= 13) {
-		LPSP_CAPABLE(encoder->port <= PORT_B);
-		return 0;
-	}
-
-	switch (DISPLAY_VER(i915)) {
-	case 12:
+	if (DISPLAY_VER(i915) >= 13)
+		lpsp_capable = encoder->port <= PORT_B;
+	else if (DISPLAY_VER(i915) >= 12)
 		/*
 		 * Actually TGL can drive LPSP on port till DDI_C
 		 * but there is no physical connected DDI_C on TGL sku's,
 		 * even driver is not initilizing DDI_C port for gen12.
 		 */
-		LPSP_CAPABLE(encoder->port <= PORT_B);
-		break;
-	case 11:
-		LPSP_CAPABLE(connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
+		lpsp_capable = encoder->port <= PORT_B;
+	else if (DISPLAY_VER(i915) == 11)
+		lpsp_capable = (connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
 				connector->connector_type == DRM_MODE_CONNECTOR_eDP);
-		break;
-	case 10:
-	case 9:
-		LPSP_CAPABLE(encoder->port == PORT_A &&
+	else if (IS_DISPLAY_VER(i915, 9, 10))
+		lpsp_capable = (encoder->port == PORT_A &&
 				(connector->connector_type == DRM_MODE_CONNECTOR_DSI ||
 				 connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
 				 connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort));
-		break;
-	default:
-		if (IS_HASWELL(i915) || IS_BROADWELL(i915))
-			LPSP_CAPABLE(connector->connector_type == DRM_MODE_CONNECTOR_eDP);
-	}
+	else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
+		lpsp_capable = connector->connector_type == DRM_MODE_CONNECTOR_eDP;
+
+	seq_printf(m, "LPSP: %s\n", lpsp_capable ? "capable" : "incapable");
 
 	return 0;
 }