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

   1/*
   2 * NCI based Driver for STMicroelectronics NFC Chip
   3 *
   4 * Copyright (C) 2014-2015  STMicroelectronics SAS. All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19#ifndef __LOCAL_NDLC_H_
  20#define __LOCAL_NDLC_H_
  21
  22#include <linux/skbuff.h>
  23#include <net/nfc/nfc.h>
  24
  25struct st_nci_se_status;
  26
  27/* Low Level Transport description */
  28struct llt_ndlc {
  29        struct nci_dev *ndev;
  30        struct nfc_phy_ops *ops;
  31        void *phy_id;
  32
  33        struct timer_list t1_timer;
  34        bool t1_active;
  35
  36        struct timer_list t2_timer;
  37        bool t2_active;
  38
  39        struct sk_buff_head rcv_q;
  40        struct sk_buff_head send_q;
  41        struct sk_buff_head ack_pending_q;
  42
  43        struct work_struct sm_work;
  44
  45        struct device *dev;
  46
  47        /*
  48         * < 0 if hardware error occurred
  49         * and prevents normal operation.
  50         */
  51        int hard_fault;
  52        int powered;
  53};
  54
  55int ndlc_open(struct llt_ndlc *ndlc);
  56void ndlc_close(struct llt_ndlc *ndlc);
  57int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
  58void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
  59int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
  60               int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id,
  61               struct st_nci_se_status *se_status);
  62void ndlc_remove(struct llt_ndlc *ndlc);
  63#endif /* __LOCAL_NDLC_H__ */
  64