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 } 63