1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * HSI clients registration interface
4 *
5 * Copyright (C) 2010 Nokia Corporation. All rights reserved.
6 *
7 * Contact: Carlos Chinea <carlos.chinea@nokia.com>
8 */
9#include <linux/hsi/hsi.h>
10#include <linux/list.h>
11#include <linux/slab.h>
12#include "hsi_core.h"
13
14/*
15 * hsi_board_list is only used internally by the HSI framework.
16 * No one else is allowed to make use of it.
17 */
18LIST_HEAD(hsi_board_list);
19EXPORT_SYMBOL_GPL(hsi_board_list);
20
21/**
22 * hsi_register_board_info - Register HSI clients information
23 * @info: Array of HSI clients on the board
24 * @len: Length of the array
25 *
26 * HSI clients are statically declared and registered on board files.
27 *
28 * HSI clients will be automatically registered to the HSI bus once the
29 * controller and the port where the clients wishes to attach are registered
30 * to it.
31 *
32 * Return -errno on failure, 0 on success.
33 */
34int __init hsi_register_board_info(struct hsi_board_info const *info,
35							unsigned int len)
36{
37	struct hsi_cl_info *cl_info;
38
39	cl_info = kcalloc(len, sizeof(*cl_info), GFP_KERNEL);
40	if (!cl_info)
41		return -ENOMEM;
42
43	for (; len; len--, info++, cl_info++) {
44		cl_info->info = *info;
45		list_add_tail(&cl_info->list, &hsi_board_list);
46	}
47
48	return 0;
49}
50