LXR linux/drivers/nfc/st-nci/ndlc.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * NCI based Driver for STMicroelectronics NFC Chip
   4 *
   5 * Copyright (C) 2014-2015  STMicroelectronics SAS. All rights reserved.
   6 */
   7
   8#ifndef __LOCAL_NDLC_H_
   9#define __LOCAL_NDLC_H_
  10
  11#include <linux/skbuff.h>
  12#include <net/nfc/nfc.h>
  13
  14struct st_nci_se_status;
  15
  16/* Low Level Transport description */
  17struct llt_ndlc {
  18        struct nci_dev *ndev;
  19        struct nfc_phy_ops *ops;
  20        void *phy_id;
  21
  22        struct timer_list t1_timer;
  23        bool t1_active;
  24
  25        struct timer_list t2_timer;
  26        bool t2_active;
  27
  28        struct sk_buff_head rcv_q;
  29        struct sk_buff_head send_q;
  30        struct sk_buff_head ack_pending_q;
  31
  32        struct work_struct sm_work;
  33
  34        struct device *dev;
  35
  36        /*
  37         * < 0 if hardware error occurred
  38         * and prevents normal operation.
  39         */
  40        int hard_fault;
  41        int powered;
  42};
  43
  44int ndlc_open(struct llt_ndlc *ndlc);
  45void ndlc_close(struct llt_ndlc *ndlc);
  46int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
  47void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
  48int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
  49               int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,
  50               struct st_nci_se_status *se_status);
  51void ndlc_remove(struct llt_ndlc *ndlc);
  52#endif /* __LOCAL_NDLC_H__ */
  53