1/*
2 * NCI based Driver for STMicroelectronics NFC Chip
3 *
4 * Copyright (C) 2014  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
25/* Low Level Transport description */
26struct llt_ndlc {
27	struct nci_dev *ndev;
28	struct nfc_phy_ops *ops;
29	void *phy_id;
30
31	struct timer_list t1_timer;
32	bool t1_active;
33
34	struct timer_list t2_timer;
35	bool t2_active;
36
37	struct sk_buff_head rcv_q;
38	struct sk_buff_head send_q;
39	struct sk_buff_head ack_pending_q;
40
41	struct work_struct sm_work;
42
43	struct device *dev;
44
45	/*
46	 * < 0 if hardware error occured
47	 * and prevents normal operation.
48	 */
49	int hard_fault;
50};
51
52int ndlc_open(struct llt_ndlc *ndlc);
53void ndlc_close(struct llt_ndlc *ndlc);
54int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb);
55void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb);
56int ndlc_probe(void *phy_id, struct nfc_phy_ops *phy_ops, struct device *dev,
57	int phy_headroom, int phy_tailroom, struct llt_ndlc **ndlc_id);
58void ndlc_remove(struct llt_ndlc *ndlc);
59#endif /* __LOCAL_NDLC_H__ */
60