1 /* 2 * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program; if not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #ifndef __LOCAL_ST21NFCA_H_ 18 #define __LOCAL_ST21NFCA_H_ 19 20 #include <net/nfc/hci.h> 21 22 #include "st21nfca_dep.h" 23 24 #define HCI_MODE 0 25 26 /* framing in HCI mode */ 27 #define ST21NFCA_SOF_EOF_LEN 2 28 29 /* Almost every time value is 0 */ 30 #define ST21NFCA_HCI_LLC_LEN 1 31 32 /* Size in worst case : 33 * In normal case CRC len = 2 but byte stuffing 34 * may appear in case one CRC byte = ST21NFCA_SOF_EOF 35 */ 36 #define ST21NFCA_HCI_LLC_CRC 4 37 38 #define ST21NFCA_HCI_LLC_LEN_CRC (ST21NFCA_SOF_EOF_LEN + \ 39 ST21NFCA_HCI_LLC_LEN + \ 40 ST21NFCA_HCI_LLC_CRC) 41 #define ST21NFCA_HCI_LLC_MIN_SIZE (1 + ST21NFCA_HCI_LLC_LEN_CRC) 42 43 /* Worst case when adding byte stuffing between each byte */ 44 #define ST21NFCA_HCI_LLC_MAX_PAYLOAD 29 45 #define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \ 46 ST21NFCA_HCI_LLC_MAX_PAYLOAD) 47 48 #define DRIVER_DESC "HCI NFC driver for ST21NFCA" 49 50 #define ST21NFCA_HCI_MODE 0 51 52 #define ST21NFCA_NUM_DEVICES 256 53 54 int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, 55 char *llc_name, int phy_headroom, int phy_tailroom, 56 int phy_payload, struct nfc_hci_dev **hdev); 57 void st21nfca_hci_remove(struct nfc_hci_dev *hdev); 58 59 enum st21nfca_state { 60 ST21NFCA_ST_COLD, 61 ST21NFCA_ST_READY, 62 }; 63 64 struct st21nfca_hci_info { 65 struct nfc_phy_ops *phy_ops; 66 void *phy_id; 67 68 struct nfc_hci_dev *hdev; 69 70 enum st21nfca_state state; 71 72 struct mutex info_lock; 73 74 int async_cb_type; 75 data_exchange_cb_t async_cb; 76 void *async_cb_context; 77 78 struct st21nfca_dep_info dep_info; 79 }; 80 81 /* Reader RF commands */ 82 #define ST21NFCA_WR_XCHG_DATA 0x10 83 84 #define ST21NFCA_RF_READER_F_GATE 0x14 85 86 #define ST21NFCA_RF_CARD_F_GATE 0x24 87 88 #endif /* __LOCAL_ST21NFCA_H_ */ 89