linux/drivers/gpu/drm/amd/display/dc/core/dc_link_enc_cfg.c

/* Copyright 2021 Advanced Micro Devices, Inc. All rights reserved.
 *
 * 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_enc_cfg.h"
#include "resource.h"
#include "link.h"

#define DC_LOGGER …

/* Check whether stream is supported by DIG link encoders. */
static bool is_dig_link_enc_stream(struct dc_stream_state *stream)
{ … }

static struct link_enc_assignment get_assignment(struct dc *dc, int i)
{ … }

/* Return stream using DIG link encoder resource. NULL if unused. */
static struct dc_stream_state *get_stream_using_link_enc(
		struct dc_state *state,
		enum engine_id eng_id)
{ … }

static void remove_link_enc_assignment(
		struct dc_state *state,
		struct dc_stream_state *stream,
		enum engine_id eng_id)
{ … }

static void add_link_enc_assignment(
		struct dc_state *state,
		struct dc_stream_state *stream,
		enum engine_id eng_id)
{ … }

/* Return first available DIG link encoder. */
static enum engine_id find_first_avail_link_enc(
		const struct dc_context *ctx,
		const struct dc_state *state,
		enum engine_id eng_id_requested)
{ … }

/* Check for availability of link encoder eng_id. */
static bool is_avail_link_enc(struct dc_state *state, enum engine_id eng_id, struct dc_stream_state *stream)
{ … }

/* Test for display_endpoint_id equality. */
static bool are_ep_ids_equal(struct display_endpoint_id *lhs, struct display_endpoint_id *rhs)
{ … }

static struct link_encoder *get_link_enc_used_by_link(
		struct dc_state *state,
		const struct dc_link *link)
{ … }
/* Clear all link encoder assignments. */
static void clear_enc_assignments(const struct dc *dc, struct dc_state *state)
{ … }

void link_enc_cfg_init(
		const struct dc *dc,
		struct dc_state *state)
{ … }

void link_enc_cfg_copy(const struct dc_state *src_ctx, struct dc_state *dst_ctx)
{ … }

void link_enc_cfg_link_encs_assign(
		struct dc *dc,
		struct dc_state *state,
		struct dc_stream_state *streams[],
		uint8_t stream_count)
{ … }

void link_enc_cfg_link_enc_unassign(
		struct dc_state *state,
		struct dc_stream_state *stream)
{ … }

bool link_enc_cfg_is_transmitter_mappable(
		struct dc *dc,
		struct link_encoder *link_enc)
{ … }

struct dc_stream_state *link_enc_cfg_get_stream_using_link_enc(
		struct dc *dc,
		enum engine_id eng_id)
{ … }

struct dc_link *link_enc_cfg_get_link_using_link_enc(
		struct dc *dc,
		enum engine_id eng_id)
{ … }

struct link_encoder *link_enc_cfg_get_link_enc_used_by_link(
		struct dc *dc,
		const struct dc_link *link)
{ … }

struct link_encoder *link_enc_cfg_get_next_avail_link_enc(struct dc *dc)
{ … }

struct link_encoder *link_enc_cfg_get_link_enc_used_by_stream(
		struct dc *dc,
		const struct dc_stream_state *stream)
{ … }

struct link_encoder *link_enc_cfg_get_link_enc(
		const struct dc_link *link)
{ … }

struct link_encoder *link_enc_cfg_get_link_enc_used_by_stream_current(
		struct dc *dc,
		const struct dc_stream_state *stream)
{ … }

bool link_enc_cfg_is_link_enc_avail(struct dc *dc, enum engine_id eng_id, struct dc_link *link)
{ … }

bool link_enc_cfg_validate(struct dc *dc, struct dc_state *state)
{ … }

void link_enc_cfg_set_transient_mode(struct dc *dc, struct dc_state *current_state, struct dc_state *new_state)
{ … }