[PATCH i-g-t, v6 1/4] tests/intel/kms_joiner_helper: Add igt_get_joined_pipes_name()

[Swati Sharma <swati2.sharma@intel.com>]

Add function to transform the enum into a string.

v2: -Improved func() doc (Jeevan)
v3: -Return names without '-' dash prefix (Santhosh)
v4: -Move from lib/igt_kms to tests/intel/kms_joiner_helper (Jani)

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
---
 tests/intel/kms_joiner_helper.c | 22 ++++++++++++++++++++++
 tests/intel/kms_joiner_helper.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/tests/intel/kms_joiner_helper.c b/tests/intel/kms_joiner_helper.c
index e24d7ce94..0aa409ac2 100644
--- a/tests/intel/kms_joiner_helper.c
+++ b/tests/intel/kms_joiner_helper.c
@@ -183,3 +183,25 @@ bool igt_assign_pipes_for_outputs(int drm_fd,
 	}
 	return true;
 }
+
+/**
+ * igt_get_joined_pipes_name:
+ * @val: joined_pipes enum value
+ *
+ * Returns: A readable string for the given joined_pipes enum value.
+ */
+const char *igt_get_joined_pipes_name(enum joined_pipes val)
+{
+	switch (val) {
+	case JOINED_PIPES_DEFAULT:
+		return "";
+	case JOINED_PIPES_NONE:
+		return "none";
+	case JOINED_PIPES_BIG_JOINER:
+		return "bigjoiner";
+	case JOINED_PIPES_ULTRA_JOINER:
+		return "ultrajoiner";
+	default:
+		igt_assert(false);
+	}
+}
diff --git a/tests/intel/kms_joiner_helper.h b/tests/intel/kms_joiner_helper.h
index 6d21e7eb0..1ea871a3b 100644
--- a/tests/intel/kms_joiner_helper.h
+++ b/tests/intel/kms_joiner_helper.h
@@ -17,6 +17,7 @@ bool igt_assign_pipes_for_outputs(int drm_fd,
 				  uint32_t *used_pipes_mask,
 				  uint32_t master_pipes_mask,
 				  uint32_t valid_pipes_mask);
+const char *igt_get_joined_pipes_name(enum joined_pipes val);
 
 enum force_joiner_mode {
 	FORCE_JOINER_ENABLE = 0,
-- 
2.25.1