1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h
new file mode 100644
index 000000000000..ab88f07772a3
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h
@@ -0,0 +1,105 @@
+/*
+ * 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
+ *
+ */
+
+/**
+ * This file defines helper functions provided by the Display Manager to
+ * Display Core.
+ */
+#ifndef __DM_HELPERS__
+#define __DM_HELPERS__
+
+#include "dc_types.h"
+#include "dc.h"
+
+struct dp_mst_stream_allocation_table;
+
+enum dc_edid_status dm_helpers_parse_edid_caps(
+	struct dc_context *ctx,
+	const struct dc_edid *edid,
+	struct dc_edid_caps *edid_caps);
+
+/*
+ * Writes payload allocation table in immediate downstream device.
+ */
+bool dm_helpers_dp_mst_write_payload_allocation_table(
+		struct dc_context *ctx,
+		const struct dc_stream_state *stream,
+		struct dp_mst_stream_allocation_table *proposed_table,
+		bool enable);
+
+/*
+ * Polls for ACT (allocation change trigger) handled and
+ */
+bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
+		struct dc_context *ctx,
+		const struct dc_stream_state *stream);
+/*
+ * Sends ALLOCATE_PAYLOAD message.
+ */
+bool dm_helpers_dp_mst_send_payload_allocation(
+		struct dc_context *ctx,
+		const struct dc_stream_state *stream,
+		bool enable);
+
+bool dm_helpers_dp_mst_start_top_mgr(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		bool boot);
+
+void dm_helpers_dp_mst_stop_top_mgr(
+		struct dc_context *ctx,
+		const struct dc_link *link);
+/**
+ * OS specific aux read callback.
+ */
+bool dm_helpers_dp_read_dpcd(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		uint32_t address,
+		uint8_t *data,
+		uint32_t size);
+
+/**
+ * OS specific aux write callback.
+ */
+bool dm_helpers_dp_write_dpcd(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		uint32_t address,
+		const uint8_t *data,
+		uint32_t size);
+
+bool dm_helpers_submit_i2c(
+		struct dc_context *ctx,
+		const struct dc_link *link,
+		struct i2c_command *cmd);
+
+enum dc_edid_status dm_helpers_read_local_edid(
+		struct dc_context *ctx,
+		struct dc_link *link,
+		struct dc_sink *sink);
+
+
+#endif /* __DM_HELPERS__ */