1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stat.c b/drivers/gpu/drm/amd/display/dc/core/dc_stat.c
new file mode 100644
index 000000000000..31761f3595a6
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stat.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2020 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 "dc/dc_stat.h"
+#include "dmub/dmub_srv_stat.h"
+#include "dc_dmub_srv.h"
+
+/**
+ * DOC: DC STAT Interface
+ *
+ * These interfaces are called without acquiring DAL and DC locks.
+ * Hence, there is limitations on whese interfaces can access. Only
+ * variables exclusively defined for these interfaces can be modified.
+ */
+
+/**
+ *****************************************************************************
+ *  Function: dc_stat_get_dmub_notification
+ *
+ *  @brief
+ *		Calls dmub layer to retrieve dmub notification
+ *
+ *  @param
+ *		[in] dc: dc structure
+ *		[in] notify: dmub notification structure
+ *
+ *  @return
+ *     None
+ *****************************************************************************
+ */
+void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification *notify)
+{
+	/**
+	 * This function is called without dal and dc locks, so
+	 * we shall not modify any dc, dc_dmub_srv or dmub variables
+	 * except variables exclusively accessed by this function
+	 */
+	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
+	enum dmub_status status;
+
+	status = dmub_srv_stat_get_notification(dmub, notify);
+	ASSERT(status == DMUB_STATUS_OK);
+}