| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 = kcalloc(len, sizeof(*cl_info), 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 | } |