drm/amd/display: Add DMUB support to DC

DC will use DMUB for command submission and flow control during
initialization.

Register offloading as well as submitting some BIOS commands are part
of the DC internal interface but are guarded behind debug options.

It won't be functional in amdgpu_dm yet since we don't pass the
DMUB service to DC for use.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
new file mode 100644
index 000000000000..754b6077539c
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2018 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
+ *
+ */
+
+#ifndef _DMUB_DC_SRV_H_
+#define _DMUB_DC_SRV_H_
+
+#include "os_types.h"
+#include "../dmub/inc/dmub_cmd.h"
+
+struct dmub_srv;
+struct dmub_cmd_header;
+
+struct dc_reg_helper_state {
+	bool gather_in_progress;
+	uint32_t same_addr_count;
+	bool should_burst_write;
+	union dmub_rb_cmd cmd_data;
+	unsigned int reg_seq_count;
+};
+
+struct dc_dmub_srv {
+	struct dmub_srv *dmub;
+	struct dc_reg_helper_state reg_helper_offload;
+
+	struct dc_context *ctx;
+	void *dm;
+};
+
+void dc_dmub_srv_cmd_queue(struct dc_dmub_srv *dc_dmub_srv,
+			   struct dmub_cmd_header *cmd);
+
+void dc_dmub_srv_cmd_execute(struct dc_dmub_srv *dc_dmub_srv);
+
+void dc_dmub_srv_wait_idle(struct dc_dmub_srv *dc_dmub_srv);
+
+void dc_dmub_srv_wait_phy_init(struct dc_dmub_srv *dc_dmub_srv);
+
+#endif /* _DMUB_DC_SRV_H_ */