[PATCH i-g-t,v5 1/4] lib/igt_kms: 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)

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 lib/igt_kms.c | 22 ++++++++++++++++++++++
 lib/igt_kms.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 2efdfb85f..bece27ff6 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1906,6 +1906,28 @@ bool kmstest_force_connector_joiner(int drm_fd, drmModeConnector *connector, int
 	return true;
 }
 
+/**
+ * igt_get_joined_pipes_name:
+ * @val: forced value
+ *
+ * Returns: A joined_pipes enum value into a readable string.
+ */
+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);
+	}
+}
+
 /**
  * kmstest_force_edid:
  * @drm_fd: drm file descriptor
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index fcbb6a5ad..6898cd981 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -1280,6 +1280,7 @@ void igt_set_link_params(int drm_fd, igt_output_t *output,
 int igt_backlight_read(int *result, const char *fname, igt_backlight_context_t *context);
 int igt_backlight_write(int value, const char *fname, igt_backlight_context_t *context);
 uint32_t igt_get_connected_output_count(igt_display_t *display);
+const char *igt_get_joined_pipes_name(enum joined_pipes val);
 
 drmModePropertyBlobRes *igt_get_writeback_formats_blob(igt_output_t *output);
 
-- 
2.25.1