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a056ab8c CC |
1 | /* |
2 | * HSI clients registration interface | |
3 | * | |
4 | * Copyright (C) 2010 Nokia Corporation. All rights reserved. | |
5 | * | |
6 | * Contact: Carlos Chinea <carlos.chinea@nokia.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | */ | |
22 | #include <linux/hsi/hsi.h> | |
23 | #include <linux/list.h> | |
24 | #include <linux/slab.h> | |
25 | #include "hsi_core.h" | |
26 | ||
27 | /* | |
28 | * hsi_board_list is only used internally by the HSI framework. | |
29 | * No one else is allowed to make use of it. | |
30 | */ | |
31 | LIST_HEAD(hsi_board_list); | |
32 | EXPORT_SYMBOL_GPL(hsi_board_list); | |
33 | ||
34 | /** | |
35 | * hsi_register_board_info - Register HSI clients information | |
36 | * @info: Array of HSI clients on the board | |
37 | * @len: Length of the array | |
38 | * | |
39 | * HSI clients are statically declared and registered on board files. | |
40 | * | |
41 | * HSI clients will be automatically registered to the HSI bus once the | |
42 | * controller and the port where the clients wishes to attach are registered | |
43 | * to it. | |
44 | * | |
45 | * Return -errno on failure, 0 on success. | |
46 | */ | |
47 | int __init hsi_register_board_info(struct hsi_board_info const *info, | |
48 | unsigned int len) | |
49 | { | |
50 | struct hsi_cl_info *cl_info; | |
51 | ||
52 | cl_info = kzalloc(sizeof(*cl_info) * len, GFP_KERNEL); | |
53 | if (!cl_info) | |
54 | return -ENOMEM; | |
55 | ||
56 | for (; len; len--, info++, cl_info++) { | |
57 | cl_info->info = *info; | |
58 | list_add_tail(&cl_info->list, &hsi_board_list); | |
59 | } | |
60 | ||
61 | return 0; | |
62 | } |