drivers/gpu/drm/amd/display/dc/basics/grph_object_id.c

/*
 * Copyright 2012-15 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 "dm_services.h"
#include "include/grph_object_id.h"

static bool dal_graphics_object_id_is_valid(struct graphics_object_id id)
{
	bool rc = true;

	switch (id.type) {
	case OBJECT_TYPE_UNKNOWN:
		rc = false;
		break;
	case OBJECT_TYPE_GPU:
	case OBJECT_TYPE_ENGINE:
		/* do NOT check for id.id == 0 */
		if (id.enum_id == ENUM_ID_UNKNOWN)
			rc = false;
		break;
	default:
		if (id.id == 0 || id.enum_id == ENUM_ID_UNKNOWN)
			rc = false;
		break;
	}

	return rc;
}

bool dal_graphics_object_id_is_equal(
	struct graphics_object_id id1,
	struct graphics_object_id id2)
{
	if (false == dal_graphics_object_id_is_valid(id1)) {
		dm_output_to_console(
		"%s: Warning: comparing invalid object 'id1'!\n", __func__);
		return false;
	}

	if (false == dal_graphics_object_id_is_valid(id2)) {
		dm_output_to_console(
		"%s: Warning: comparing invalid object 'id2'!\n", __func__);
		return false;
	}

	if (id1.id == id2.id && id1.enum_id == id2.enum_id
		&& id1.type == id2.type)
		return true;

	return false;
}