drm/amd/display: move dp cts functions from dc_link_dp to link_dp_cts

Create new files link_dp_cts.c and link_dp_cts.h, and move DP cts
functions into them.
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -4095,110 +4095,6 @@ void core_link_set_avmute(struct pipe_ctx *pipe_ctx, bool enable)
 	dc->hwss.set_avmute(pipe_ctx, enable);
 }
 
-void dc_link_set_drive_settings(struct dc *dc,
-				struct link_training_settings *lt_settings,
-				const struct dc_link *link)
-{
-
-	int i;
-	struct link_resource link_res;
-
-	for (i = 0; i < dc->link_count; i++)
-		if (dc->links[i] == link)
-			break;
-
-	if (i >= dc->link_count)
-		ASSERT_CRITICAL(false);
-
-	dc_link_get_cur_link_res(link, &link_res);
-	dp_set_drive_settings(dc->links[i], &link_res, lt_settings);
-}
-
-void dc_link_set_preferred_link_settings(struct dc *dc,
-					 struct dc_link_settings *link_setting,
-					 struct dc_link *link)
-{
-	int i;
-	struct pipe_ctx *pipe;
-	struct dc_stream_state *link_stream;
-	struct dc_link_settings store_settings = *link_setting;
-
-	link->preferred_link_setting = store_settings;
-
-	/* Retrain with preferred link settings only relevant for
-	 * DP signal type
-	 * Check for non-DP signal or if passive dongle present
-	 */
-	if (!dc_is_dp_signal(link->connector_signal) ||
-		link->dongle_max_pix_clk > 0)
-		return;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		pipe = &dc->current_state->res_ctx.pipe_ctx[i];
-		if (pipe->stream && pipe->stream->link) {
-			if (pipe->stream->link == link) {
-				link_stream = pipe->stream;
-				break;
-			}
-		}
-	}
-
-	/* Stream not found */
-	if (i == MAX_PIPES)
-		return;
-
-	/* Cannot retrain link if backend is off */
-	if (link_stream->dpms_off)
-		return;
-
-	if (link_decide_link_settings(link_stream, &store_settings))
-		dp_retrain_link_dp_test(link, &store_settings, false);
-}
-
-void dc_link_set_preferred_training_settings(struct dc *dc,
-						 struct dc_link_settings *link_setting,
-						 struct dc_link_training_overrides *lt_overrides,
-						 struct dc_link *link,
-						 bool skip_immediate_retrain)
-{
-	if (lt_overrides != NULL)
-		link->preferred_training_settings = *lt_overrides;
-	else
-		memset(&link->preferred_training_settings, 0, sizeof(link->preferred_training_settings));
-
-	if (link_setting != NULL) {
-		link->preferred_link_setting = *link_setting;
-	} else {
-		link->preferred_link_setting.lane_count = LANE_COUNT_UNKNOWN;
-		link->preferred_link_setting.link_rate = LINK_RATE_UNKNOWN;
-	}
-
-	if (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT &&
-			link->type == dc_connection_mst_branch)
-		dm_helpers_dp_mst_update_branch_bandwidth(dc->ctx, link);
-
-	/* Retrain now, or wait until next stream update to apply */
-	if (skip_immediate_retrain == false)
-		dc_link_set_preferred_link_settings(dc, &link->preferred_link_setting, link);
-}
-
-void dc_link_set_test_pattern(struct dc_link *link,
-			      enum dp_test_pattern test_pattern,
-			      enum dp_test_pattern_color_space test_pattern_color_space,
-			      const struct link_training_settings *p_link_settings,
-			      const unsigned char *p_custom_pattern,
-			      unsigned int cust_pattern_size)
-{
-	if (link != NULL)
-		dc_link_dp_set_test_pattern(
-			link,
-			test_pattern,
-			test_pattern_color_space,
-			p_link_settings,
-			p_custom_pattern,
-			cust_pattern_size);
-}
-
 uint32_t dc_link_bandwidth_kbps(
 	const struct dc_link *link,
 	const struct dc_link_settings *link_setting)

drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h

@@ -74,8 +74,6 @@ struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
 		const struct dc_link *link);
 void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
 void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
-void dp_retrain_link_dp_test(struct dc_link *link,
-		struct dc_link_settings *link_setting,
-		bool skip_video_pattern);
+
 
 #endif /* __DC_LINK_DP_H__ */

drivers/gpu/drm/amd/display/dc/link/Makefile

@@ -26,7 +26,7 @@
 ###############################################################################
 # accessories
 ###############################################################################
-LINK_ACCESSORIES = link_dp_trace.o
+LINK_ACCESSORIES = link_dp_trace.o link_dp_cts.o
 
 AMD_DAL_LINK_ACCESSORIES = $(addprefix $(AMDDALPATH)/dc/link/accessories/, \
 $(LINK_ACCESSORIES))

drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.h

+/*
+ * Copyright 2023 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 __LINK_DP_CTS_H__
+#define __LINK_DP_CTS_H__
+#include "link.h"
+
+void dp_retrain_link_dp_test(struct dc_link *link,
+		struct dc_link_settings *link_setting,
+		bool skip_video_pattern);
+
+#endif /* __LINK_DP_CTS_H__ */