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 #define HCI_MODE 0 23 24 /* framing in HCI mode */ 25 #define ST21NFCA_SOF_EOF_LEN 2 26 27 /* Almost every time value is 0 */ 28 #define ST21NFCA_HCI_LLC_LEN 1 29 30 /* Size in worst case : 31 * In normal case CRC len = 2 but byte stuffing 32 * may appear in case one CRC byte = ST21NFCA_SOF_EOF 33 */ 34 #define ST21NFCA_HCI_LLC_CRC 4 35 36 #define ST21NFCA_HCI_LLC_LEN_CRC (ST21NFCA_SOF_EOF_LEN + \ 37 ST21NFCA_HCI_LLC_LEN + \ 38 ST21NFCA_HCI_LLC_CRC) 39 #define ST21NFCA_HCI_LLC_MIN_SIZE (1 + ST21NFCA_HCI_LLC_LEN_CRC) 40 41 /* Worst case when adding byte stuffing between each byte */ 42 #define ST21NFCA_HCI_LLC_MAX_PAYLOAD 29 43 #define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \ 44 ST21NFCA_HCI_LLC_MAX_PAYLOAD) 45 46 #define DRIVER_DESC "HCI NFC driver for ST21NFCA" 47 48 #define ST21NFCA_HCI_MODE 0 49 50 #define ST21NFCA_NUM_DEVICES 256 51 52 int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops, 53 char *llc_name, int phy_headroom, int phy_tailroom, 54 int phy_payload, struct nfc_hci_dev **hdev); 55 void st21nfca_hci_remove(struct nfc_hci_dev *hdev); 56 57 enum st21nfca_state { 58 ST21NFCA_ST_COLD, 59 ST21NFCA_ST_READY, 60 }; 61 62 struct st21nfca_hci_info { 63 struct nfc_phy_ops *phy_ops; 64 void *phy_id; 65 66 struct nfc_hci_dev *hdev; 67 68 enum st21nfca_state state; 69 70 struct mutex info_lock; 71 72 int async_cb_type; 73 data_exchange_cb_t async_cb; 74 void *async_cb_context; 75 76 } __packed; 77 78 /* Reader RF commands */ 79 #define ST21NFCA_WR_XCHG_DATA 0x10 80 81 #define ST21NFCA_RF_READER_F_GATE 0x14 82 #define ST21NFCA_RF_READER_F_DATARATE 0x01 83 #define ST21NFCA_RF_READER_F_DATARATE_106 0x01 84 #define ST21NFCA_RF_READER_F_DATARATE_212 0x02 85 #define ST21NFCA_RF_READER_F_DATARATE_424 0x04 86 87 #endif /* __LOCAL_ST21NFCA_H_ */ 88