// SPDX-License-Identifier: GPL-2.0-only

  /*
   * HSI clients registration interface
   *
   * Copyright (C) 2010 Nokia Corporation. All rights reserved.
   *
   * Contact: Carlos Chinea <carlos.chinea@nokia.com>

   */
  #include <linux/hsi/hsi.h>
  #include <linux/list.h>
  #include <linux/slab.h>
  #include "hsi_core.h"
  
  /*
   * hsi_board_list is only used internally by the HSI framework.
   * No one else is allowed to make use of it.
   */
  LIST_HEAD(hsi_board_list);
  EXPORT_SYMBOL_GPL(hsi_board_list);
  
  /**
   * hsi_register_board_info - Register HSI clients information
   * @info: Array of HSI clients on the board
   * @len: Length of the array
   *
   * HSI clients are statically declared and registered on board files.
   *
   * HSI clients will be automatically registered to the HSI bus once the
   * controller and the port where the clients wishes to attach are registered
   * to it.
   *
   * Return -errno on failure, 0 on success.
   */
  int __init hsi_register_board_info(struct hsi_board_info const *info,
  							unsigned int len)
  {
  	struct hsi_cl_info *cl_info;

  	cl_info = kcalloc(len, sizeof(*cl_info), GFP_KERNEL);

  	if (!cl_info)
  		return -ENOMEM;
  
  	for (; len; len--, info++, cl_info++) {
  		cl_info->info = *info;
  		list_add_tail(&cl_info->list, &hsi_board_list);
  	}
  
  	return 0;
  }