| Christophe Ricard | 6895730 | 2014-03-25 06:51:47 +0100 | [diff] [blame^] | 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_ */ |