157 lines
6.3 KiB
C
157 lines
6.3 KiB
C
/*
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* Copyright 2022 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef __DC_LINK_H__
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#define __DC_LINK_H__
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/* FILE POLICY AND INTENDED USAGE:
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*
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* This header declares link functions exposed to dc. All functions must have
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* "link_" as prefix. For example link_run_my_function. This header is strictly
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* private in dc and should never be included in other header files. dc
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* components should include this header in their .c files in order to access
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* functions in link folder. This file should never include any header files in
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* link folder. If there is a need to expose a function declared in one of
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* header files in side link folder, you need to move the function declaration
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* into this file and prefix it with "link_".
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*/
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#include "core_types.h"
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struct link_init_data {
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const struct dc *dc;
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struct dc_context *ctx; /* TODO: remove 'dal' when DC is complete. */
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uint32_t connector_index; /* this will be mapped to the HPD pins */
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uint32_t link_index; /* this is mapped to DAL display_index
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TODO: remove it when DC is complete. */
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bool is_dpia_link;
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};
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struct dc_link *link_create(const struct link_init_data *init_params);
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void link_destroy(struct dc_link **link);
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// TODO - convert any function declarations below to function pointers
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struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
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struct graphics_object_id link_id,
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struct gpio_service *gpio_service);
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struct ddc_service_init_data {
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struct graphics_object_id id;
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struct dc_context *ctx;
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struct dc_link *link;
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bool is_dpia_link;
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};
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struct ddc_service *link_create_ddc_service(
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struct ddc_service_init_data *ddc_init_data);
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void link_destroy_ddc_service(struct ddc_service **ddc);
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bool link_is_in_aux_transaction_mode(struct ddc_service *ddc);
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bool link_query_ddc_data(
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struct ddc_service *ddc,
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uint32_t address,
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uint8_t *write_buf,
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uint32_t write_size,
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uint8_t *read_buf,
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uint32_t read_size);
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/* Attempt to submit an aux payload, retrying on timeouts, defers, and busy
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* states as outlined in the DP spec. Returns true if the request was
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* successful.
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*
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* NOTE: The function requires explicit mutex on DM side in order to prevent
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* potential race condition. DC components should call the dpcd read/write
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* function in dm_helpers in order to access dpcd safely
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*/
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bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
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struct aux_payload *payload);
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uint32_t link_get_aux_defer_delay(struct ddc_service *ddc);
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bool link_is_dp_128b_132b_signal(struct pipe_ctx *pipe_ctx);
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enum dp_link_encoding link_dp_get_encoding_format(
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const struct dc_link_settings *link_settings);
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bool link_decide_link_settings(
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struct dc_stream_state *stream,
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struct dc_link_settings *link_setting);
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void link_dp_trace_set_edp_power_timestamp(struct dc_link *link,
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bool power_up);
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uint64_t link_dp_trace_get_edp_poweron_timestamp(struct dc_link *link);
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uint64_t link_dp_trace_get_edp_poweroff_timestamp(struct dc_link *link);
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bool link_is_edp_ilr_optimization_required(struct dc_link *link,
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struct dc_crtc_timing *crtc_timing);
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bool link_backlight_enable_aux(struct dc_link *link, bool enable);
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void link_edp_add_delay_for_T9(struct dc_link *link);
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bool link_edp_receiver_ready_T9(struct dc_link *link);
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bool link_edp_receiver_ready_T7(struct dc_link *link);
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bool link_power_alpm_dpcd_enable(struct dc_link *link, bool enable);
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bool link_set_sink_vtotal_in_psr_active(const struct dc_link *link,
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uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su);
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void link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
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enum dc_status link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
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enum dc_status link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t req_pbn);
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void link_blank_all_dp_displays(struct dc *dc);
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void link_blank_all_edp_displays(struct dc *dc);
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void link_blank_dp_stream(struct dc_link *link, bool hw_init);
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void link_resume(struct dc_link *link);
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void link_set_dpms_on(
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struct dc_state *state,
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struct pipe_ctx *pipe_ctx);
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void link_set_dpms_off(struct pipe_ctx *pipe_ctx);
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void link_dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
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void link_set_dsc_on_stream(struct pipe_ctx *pipe_ctx, bool enable);
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bool link_set_dsc_enable(struct pipe_ctx *pipe_ctx, bool enable);
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bool link_update_dsc_config(struct pipe_ctx *pipe_ctx);
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enum dc_status link_validate_mode_timing(
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const struct dc_stream_state *stream,
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struct dc_link *link,
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const struct dc_crtc_timing *timing);
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bool link_detect(struct dc_link *link, enum dc_detect_reason reason);
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bool link_detect_connection_type(struct dc_link *link,
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enum dc_connection_type *type);
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const struct dc_link_status *link_get_status(const struct dc_link *link);
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#ifdef CONFIG_DRM_AMD_DC_HDCP
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/* return true if the connected receiver supports the hdcp version */
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bool link_is_hdcp14(struct dc_link *link, enum signal_type signal);
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bool link_is_hdcp22(struct dc_link *link, enum signal_type signal);
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#endif
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void link_clear_dprx_states(struct dc_link *link);
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bool link_reset_cur_dp_mst_topology(struct dc_link *link);
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uint32_t dp_link_bandwidth_kbps(
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const struct dc_link *link,
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const struct dc_link_settings *link_settings);
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uint32_t link_timing_bandwidth_kbps(const struct dc_crtc_timing *timing);
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void link_get_cur_res_map(const struct dc *dc, uint32_t *map);
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void link_restore_res_map(const struct dc *dc, uint32_t *map);
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#endif /* __DC_LINK_HPD_H__ */
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