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 */ 18 LIST_HEAD(hsi_board_list); 19 EXPORT_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 */ 34 int __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