1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/grph_object_id.c b/drivers/gpu/drm/amd/display/dc/basics/grph_object_id.c
new file mode 100644
index 000000000000..147822545252
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/basics/grph_object_id.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "dm_services.h"
+#include "include/grph_object_id.h"
+
+static bool dal_graphics_object_id_is_valid(struct graphics_object_id id)
+{
+	bool rc = true;
+
+	switch (id.type) {
+	case OBJECT_TYPE_UNKNOWN:
+		rc = false;
+		break;
+	case OBJECT_TYPE_GPU:
+	case OBJECT_TYPE_ENGINE:
+		/* do NOT check for id.id == 0 */
+		if (id.enum_id == ENUM_ID_UNKNOWN)
+			rc = false;
+		break;
+	default:
+		if (id.id == 0 || id.enum_id == ENUM_ID_UNKNOWN)
+			rc = false;
+		break;
+	}
+
+	return rc;
+}
+
+bool dal_graphics_object_id_is_equal(
+	struct graphics_object_id id1,
+	struct graphics_object_id id2)
+{
+	if (false == dal_graphics_object_id_is_valid(id1)) {
+		dm_output_to_console(
+		"%s: Warning: comparing invalid object 'id1'!\n", __func__);
+		return false;
+	}
+
+	if (false == dal_graphics_object_id_is_valid(id2)) {
+		dm_output_to_console(
+		"%s: Warning: comparing invalid object 'id2'!\n", __func__);
+		return false;
+	}
+
+	if (id1.id == id2.id && id1.enum_id == id2.enum_id
+		&& id1.type == id2.type)
+		return true;
+
+	return false;
+}
+
+