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kernel/linux-imx6_3.14.28/net/nfc/nci/lib.c 2.12 KB
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  /*
   *  The NFC Controller Interface is the communication protocol between an
   *  NFC Controller (NFCC) and a Device Host (DH).
   *
   *  Copyright (C) 2011 Texas Instruments, Inc.
   *
   *  Written by Ilan Elias <ilane@ti.com>
   *
   *  Acknowledgements:
   *  This file is based on lib.c, which was written
   *  by Maxim Krasnyansky.
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License version 2
   *  as published by the Free Software Foundation
   *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/types.h>
  #include <linux/errno.h>
  
  #include <net/nfc/nci.h>
  #include <net/nfc/nci_core.h>
  
  /* NCI status codes to Unix errno mapping */
  int nci_to_errno(__u8 code)
  {
  	switch (code) {
  	case NCI_STATUS_OK:
  		return 0;
  
  	case NCI_STATUS_REJECTED:
  		return -EBUSY;
  
  	case NCI_STATUS_RF_FRAME_CORRUPTED:
  		return -EBADMSG;
  
  	case NCI_STATUS_NOT_INITIALIZED:
  		return -EHOSTDOWN;
  
  	case NCI_STATUS_SYNTAX_ERROR:
  	case NCI_STATUS_SEMANTIC_ERROR:
  	case NCI_STATUS_INVALID_PARAM:
  	case NCI_STATUS_RF_PROTOCOL_ERROR:
  	case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
  		return -EPROTO;
  
  	case NCI_STATUS_UNKNOWN_GID:
  	case NCI_STATUS_UNKNOWN_OID:
  		return -EBADRQC;
  
  	case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
  		return -EMSGSIZE;
  
  	case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
  		return -EALREADY;
  
  	case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
  	case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
  		return -ECONNREFUSED;
  
  	case NCI_STATUS_RF_TRANSMISSION_ERROR:
  	case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
  		return -ECOMM;
  
  	case NCI_STATUS_RF_TIMEOUT_ERROR:
  	case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
  		return -ETIMEDOUT;
  
  	case NCI_STATUS_FAILED:
  	default:
  		return -ENOSYS;
  	}
  }
  EXPORT_SYMBOL(nci_to_errno);