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kernel/linux-rt-4.4.41/drivers/nfc/st-nci/ndlc.h 1.76 KB
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  /*
   * NCI based Driver for STMicroelectronics NFC Chip
   *
   * Copyright (C) 2014-2015  STMicroelectronics SAS. All rights reserved.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions 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/>.
   */
  
  #ifndef __LOCAL_NDLC_H_
  #define __LOCAL_NDLC_H_
  
  #include <linux/skbuff.h>
  #include <net/nfc/nfc.h>
  
  struct st_nci_se_status;
  
  /* Low Level Transport description */
  struct llt_ndlc {
  	struct nci_dev *ndev;
  	struct nfc_phy_ops *ops;
  	void *phy_id;
  
  	struct timer_list t1_timer;
  	bool t1_active;
  
  	struct timer_list t2_timer;
  	bool t2_active;
  
  	struct sk_buff_head rcv_q;
  	struct sk_buff_head send_q;
  	struct sk_buff_head ack_pending_q;
  
  	struct work_struct sm_work;
  
  	struct device *dev;
  
  	/*
  	 * < 0 if hardware error occurred
  	 * and prevents normal operation.
  	 */
  	int hard_fault;
  	int powered;
  };
  
  int ndlc_open(struct llt_ndlc *ndlc);
  void ndlc_close(struct llt_ndlc *ndlc);
  int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
  void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
  int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
  	       int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,
  	       struct st_nci_se_status *se_status);
  void ndlc_remove(struct llt_ndlc *ndlc);
  #endif /* __LOCAL_NDLC_H__ */