path: root/drivers/gpu/drm/amd/display/dc/core/dc_state.c

/*
 * 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
 *
 */
#include "dc_types.h"
#include "core_types.h"
#include "core_status.h"
#include "dc_state.h"
#include "dc_state_priv.h"
#include "dc_stream_priv.h"
#include "dc_plane_priv.h"

#include "dm_services.h"
#include "resource.h"
#include "link_enc_cfg.h"

#if defined(CONFIG_DRM_AMD_DC_FP)
#include "dml2_0/dml2_wrapper.h"
#include "dml2_0/dml2_internal_types.h"
#endif

#define DC_LOGGER \
	dc->ctx->logger
#define DC_LOGGER_INIT(logger)

/* Private dc_state helper functions */
static bool dc_state_track_phantom_stream(struct dc_state *state,
		struct dc_stream_state *phantom_stream)
{
	if (state->phantom_stream_count >= MAX_PHANTOM_PIPES)
		return false;

	state->phantom_streams[state->phantom_stream_count++] = phantom_stream;

	return true;
}

static bool dc_state_untrack_phantom_stream(struct dc_state *state, struct dc_stream_state *phantom_stream)
{
	bool res = false;
	int i;

	/* first find phantom stream in the dc_state */
	for (i = 0; i < state->phantom_stream_count; i++) {
		if (state->phantom_streams[i] == phantom_stream) {
			state->phantom_streams[i] = NULL;
			res = true;
			break;
		}
	}

	/* failed to find stream in state */
	if (!res)
		return res;

	/* trim back phantom streams */
	state->phantom_stream_count--;
	for (; i < state->phantom_stream_count; i++)
		state->phantom_streams[i] = state->phantom_streams[i + 1];

	return res;
}

static bool dc_state_is_phantom_stream_tracked(struct dc_state *state, struct dc_stream_state *phantom_stream)
{
	int i;

	for (i = 0; i < state->phantom_stream_count; i++) {
		if (state->phantom_streams[i] == phantom_stream)
			return true;
	}

	return false;
}

static bool dc_state_track_phantom_plane(struct dc_state *state,
		struct dc_plane_state *phantom_plane)
{
	if (state->phantom_plane_count >= MAX_PHANTOM_PIPES)
		return false;

	state->phantom_planes[state->phantom_plane_count++] = phantom_plane;

	return true;
}

static bool dc_state_untrack_phantom_plane(struct dc_state *state, struct dc_plane_state *phantom_plane)
{
	bool res = false;
	int i;

	/* first find phantom plane in the dc_state */
	for (i = 0; i < state->phantom_plane_count; i++) {
		if (state->phantom_planes[i] == phantom_plane) {
			state->phantom_planes[i] = NULL;
			res = true;
			break;
		}
	}

	/* failed to find plane in state */
	if (!res)
		return res;

	/* trim back phantom planes */
	state->phantom_plane_count--;
	for (; i < state->phantom_plane_count; i++)
		state->phantom_planes[i] = state->phantom_planes[i + 1];