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 14 struct st_nci_se_status; 15 16 /* Low Level Transport description */ 17 struct llt_ndlc { 18 struct nci_dev *ndev; 19 const 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 44 int ndlc_open(struct llt_ndlc *ndlc); 45 void ndlc_close(struct llt_ndlc *ndlc); 46 int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb); 47 void ndlc_recv(struct llt_ndlc *ndlc, struct sk_buff *skb); 48 int ndlc_probe(void *phy_id, const struct nfc_phy_ops *phy_ops, 49 struct device *dev, int phy_headroom, int phy_tailroom, 50 struct llt_ndlc **ndlc_id, struct st_nci_se_status *se_status); 51 void ndlc_remove(struct llt_ndlc *ndlc); 52 #endif /* __LOCAL_NDLC_H__ */ 53