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      1 /*	$NetBSD: dc_link_dp.h,v 1.2 2021/12/18 23:45:05 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2015 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #ifndef __DC_LINK_DP_H__
     29 #define __DC_LINK_DP_H__
     30 
     31 #define LINK_TRAINING_ATTEMPTS 4
     32 #define LINK_TRAINING_RETRY_DELAY 50 /* ms */
     33 #define LINK_AUX_DEFAULT_EXTENDED_TIMEOUT_PERIOD 3200 /*us*/
     34 #define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
     35 
     36 struct dc_link;
     37 struct dc_stream_state;
     38 struct dc_link_settings;
     39 
     40 bool dp_verify_link_cap(
     41 	struct dc_link *link,
     42 	struct dc_link_settings *known_limit_link_setting,
     43 	int *fail_count);
     44 
     45 bool dp_verify_link_cap_with_retries(
     46 	struct dc_link *link,
     47 	struct dc_link_settings *known_limit_link_setting,
     48 	int attempts);
     49 
     50 bool dp_verify_mst_link_cap(
     51 	struct dc_link *link);
     52 
     53 bool dp_validate_mode_timing(
     54 	struct dc_link *link,
     55 	const struct dc_crtc_timing *timing);
     56 
     57 void decide_link_settings(
     58 	struct dc_stream_state *stream,
     59 	struct dc_link_settings *link_setting);
     60 
     61 bool perform_link_training_with_retries(
     62 	const struct dc_link_settings *link_setting,
     63 	bool skip_video_pattern,
     64 	int attempts,
     65 	struct pipe_ctx *pipe_ctx,
     66 	enum signal_type signal);
     67 
     68 bool is_mst_supported(struct dc_link *link);
     69 
     70 bool detect_dp_sink_caps(struct dc_link *link);
     71 
     72 void detect_edp_sink_caps(struct dc_link *link);
     73 
     74 bool is_dp_active_dongle(const struct dc_link *link);
     75 
     76 void dp_enable_mst_on_sink(struct dc_link *link, bool enable);
     77 
     78 enum dp_panel_mode dp_get_panel_mode(struct dc_link *link);
     79 void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode);
     80 
     81 bool dp_overwrite_extended_receiver_cap(struct dc_link *link);
     82 
     83 void dp_set_fec_ready(struct dc_link *link, bool ready);
     84 void dp_set_fec_enable(struct dc_link *link, bool enable);
     85 bool dp_set_dsc_enable(struct pipe_ctx *pipe_ctx, bool enable);
     86 bool dp_set_dsc_pps_sdp(struct pipe_ctx *pipe_ctx, bool enable);
     87 void dp_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable);
     88 bool dp_update_dsc_config(struct pipe_ctx *pipe_ctx);
     89 
     90 #endif /* __DC_LINK_DP_H__ */
     91