[PATCH] drm: add drm_get_connector_force_name

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Follow the naming in debugfs also for logging, add "unknown" for values
beyond the enumerated ones.

Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 drivers/gpu/drm/drm_connector.c | 41 +++++++++++++++++++++++++----------------
 drivers/gpu/drm/drm_debugfs.c   | 24 +-----------------------
 include/drm/drm_connector.h     |  1 +
 3 files changed, 27 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 45464c8b797d..36ef9be17204 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -128,22 +128,8 @@ static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
 		return;
 
 	if (mode->force) {
-		const char *s;
-
-		switch (mode->force) {
-		case DRM_FORCE_OFF:
-			s = "OFF";
-			break;
-		case DRM_FORCE_ON_DIGITAL:
-			s = "ON - dig";
-			break;
-		default:
-		case DRM_FORCE_ON:
-			s = "ON";
-			break;
-		}
-
-		DRM_INFO("forcing %s connector %s\n", connector->name, s);
+		DRM_INFO("forcing %s connector %s\n", connector->name,
+			 drm_get_connector_force_name(mode->force));
 		connector->force = mode->force;
 	}
 
@@ -488,6 +474,29 @@ const char *drm_get_connector_status_name(enum drm_connector_status status)
 }
 EXPORT_SYMBOL(drm_get_connector_status_name);
 
+/**
+ * drm_get_connector_force_name - return a string for connector force
+ * @force: connector force to get name of
+ *
+ * Returns: const pointer to name.
+ */
+const char *drm_get_connector_force_name(enum drm_connector_force force)
+{
+	switch (force) {
+	case DRM_FORCE_UNSPECIFIED:
+		return "unspecified";
+	case DRM_FORCE_OFF:
+		return "off";
+	case DRM_FORCE_ON:
+		return "on";
+	case DRM_FORCE_ON_DIGITAL:
+		return "digital";
+	default:
+		return "unknown";
+	}
+}
+EXPORT_SYMBOL(drm_get_connector_force_name);
+
 #ifdef CONFIG_LOCKDEP
 static struct lockdep_map connector_list_iter_dep_map = {
 	.name = "drm_connector_list_iter"
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 2290a74a6e46..a6385d4b598b 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -261,30 +261,8 @@ int drm_debugfs_cleanup(struct drm_minor *minor)
 static int connector_show(struct seq_file *m, void *data)
 {
 	struct drm_connector *connector = m->private;
-	const char *status;
 
-	switch (connector->force) {
-	case DRM_FORCE_ON:
-		status = "on\n";
-		break;
-
-	case DRM_FORCE_ON_DIGITAL:
-		status = "digital\n";
-		break;
-
-	case DRM_FORCE_OFF:
-		status = "off\n";
-		break;
-
-	case DRM_FORCE_UNSPECIFIED:
-		status = "unspecified\n";
-		break;
-
-	default:
-		return 0;
-	}
-
-	seq_puts(m, status);
+	seq_puts(m, drm_get_connector_force_name(connector->force));
 
 	return 0;
 }
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index e5e1eddd19fb..2bf9f46808d3 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -817,6 +817,7 @@ static inline void drm_connector_unreference(struct drm_connector *connector)
 }
 
 const char *drm_get_connector_status_name(enum drm_connector_status status);
+const char *drm_get_connector_force_name(enum drm_connector_force force);
 const char *drm_get_subpixel_order_name(enum subpixel_order order);
 const char *drm_get_dpms_name(int val);
 const char *drm_get_dvi_i_subconnector_name(int val);
-- 
2.1.4

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