linux/drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c

/*
 * Copyright 2022 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
 *
 */
#include "link_hwss_dio.h"
#include "core_types.h"
#include "link_enc_cfg.h"

/**
 * DOC: overview
 *
 * Display Input Output (DIO), is the display input and output unit in DCN. It
 * includes output encoders to support different display output, like
 * DisplayPort, HDMI, DVI interface, and others. It also includes the control
 * and status channels for these interfaces.
 */


void set_dio_throttled_vcp_size(struct pipe_ctx *pipe_ctx,
		struct fixed31_32 throttled_vcp_size)
{ … }

void setup_dio_stream_encoder(struct pipe_ctx *pipe_ctx)
{ … }

void reset_dio_stream_encoder(struct pipe_ctx *pipe_ctx)
{ … }

void setup_dio_stream_attribute(struct pipe_ctx *pipe_ctx)
{ … }

void enable_dio_dp_link_output(struct dc_link *link,
		const struct link_resource *link_res,
		enum signal_type signal,
		enum clock_source_id clock_source,
		const struct dc_link_settings *link_settings)
{ … }

void disable_dio_link_output(struct dc_link *link,
		const struct link_resource *link_res,
		enum signal_type signal)
{ … }

void set_dio_dp_link_test_pattern(struct dc_link *link,
		const struct link_resource *link_res,
		struct encoder_set_dp_phy_pattern_param *tp_params)
{ … }

void set_dio_dp_lane_settings(struct dc_link *link,
		const struct link_resource *link_res,
		const struct dc_link_settings *link_settings,
		const struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX])
{ … }

void update_dio_stream_allocation_table(struct dc_link *link,
		const struct link_resource *link_res,
		const struct link_mst_stream_allocation_table *table)
{ … }

void setup_dio_audio_output(struct pipe_ctx *pipe_ctx,
		struct audio_output *audio_output, uint32_t audio_inst)
{ … }

void enable_dio_audio_packet(struct pipe_ctx *pipe_ctx)
{ … }

void disable_dio_audio_packet(struct pipe_ctx *pipe_ctx)
{ … }

static const struct link_hwss dio_link_hwss = …;

/**
 * can_use_dio_link_hwss - Check if the link_hwss is accessible
 *
 * @link: Reference a link struct containing one or more sinks and the
 *	  connective status.
 * @link_res: Mappable hardware resource used to enable a link.
 *
 * Returns:
 * Return true if the link encoder is accessible from link.
 */
bool can_use_dio_link_hwss(const struct dc_link *link,
		const struct link_resource *link_res)
{ … }

/**
 * get_dio_link_hwss - Return link_hwss reference
 *
 * This function behaves like a get function to return the link_hwss populated
 * in the link_hwss_dio.c file.
 *
 * Returns:
 * Return the reference to the filled struct of link_hwss.
 */
const struct link_hwss *get_dio_link_hwss(void)
{ … }