1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
new file mode 100644
index 000000000000..d399270fd17e
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2019 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 "dmub_hw_lock_mgr.h"
+#include "dc_dmub_srv.h"
+#include "dc_types.h"
+#include "core_types.h"
+
+void dmub_hw_lock_mgr_cmd(struct dc_dmub_srv *dmub_srv,
+				bool lock,
+				union dmub_hw_lock_flags *hw_locks,
+				struct dmub_hw_lock_inst_flags *inst_flags)
+{
+	union dmub_rb_cmd cmd = { 0 };
+
+	cmd.lock_hw.header.type = DMUB_CMD__HW_LOCK;
+	cmd.lock_hw.header.sub_type = 0;
+	cmd.lock_hw.header.payload_bytes = sizeof(struct dmub_cmd_lock_hw_data);
+	cmd.lock_hw.lock_hw_data.client = HW_LOCK_CLIENT_DRIVER;
+	cmd.lock_hw.lock_hw_data.lock = lock;
+	cmd.lock_hw.lock_hw_data.hw_locks.u8All = hw_locks->u8All;
+	memcpy(&cmd.lock_hw.lock_hw_data.inst_flags, inst_flags, sizeof(struct dmub_hw_lock_inst_flags));
+
+	if (!lock)
+		cmd.lock_hw.lock_hw_data.should_release = 1;
+
+	dc_dmub_srv_cmd_queue(dmub_srv, &cmd);
+	dc_dmub_srv_cmd_execute(dmub_srv);
+	dc_dmub_srv_wait_idle(dmub_srv);
+}
+
+bool should_use_dmub_lock(struct dc_link *link)
+{
+	return false;
+}