drivers/nfc/st21nfca/st21nfca.h

   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 #include "st21nfca_se.h"
  24
  25 #define HCI_MODE 0
  26
  27 /* framing in HCI mode */
  28 #define ST21NFCA_SOF_EOF_LEN    2
  29
  30 /* Almost every time value is 0 */
  31 #define ST21NFCA_HCI_LLC_LEN    1
  32
  33 /* Size in worst case :
  34  * In normal case CRC len = 2 but byte stuffing
  35  * may appear in case one CRC byte = ST21NFCA_SOF_EOF
  36  */
  37 #define ST21NFCA_HCI_LLC_CRC    4
  38
  39 #define ST21NFCA_HCI_LLC_LEN_CRC        (ST21NFCA_SOF_EOF_LEN + \
  40                                                 ST21NFCA_HCI_LLC_LEN + \
  41                                                 ST21NFCA_HCI_LLC_CRC)
  42 #define ST21NFCA_HCI_LLC_MIN_SIZE       (1 + ST21NFCA_HCI_LLC_LEN_CRC)
  43
  44 /* Worst case when adding byte stuffing between each byte */
  45 #define ST21NFCA_HCI_LLC_MAX_PAYLOAD    29
  46 #define ST21NFCA_HCI_LLC_MAX_SIZE       (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
  47                                         ST21NFCA_HCI_LLC_MAX_PAYLOAD)
  48
  49 #define DRIVER_DESC "HCI NFC driver for ST21NFCA"
  50
  51 #define ST21NFCA_HCI_MODE 0
  52
  53 #define ST21NFCA_NUM_DEVICES 256
  54
  55 struct st21nfca_se_status {
  56         bool is_ese_present;
  57         bool is_uicc_present;
  58 };
  59
  60 int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
  61                        char *llc_name, int phy_headroom, int phy_tailroom,
  62                        int phy_payload, struct nfc_hci_dev **hdev,
  63                            struct st21nfca_se_status *se_status);
  64 void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
  65
  66 enum st21nfca_state {
  67         ST21NFCA_ST_COLD,
  68         ST21NFCA_ST_READY,
  69 };
  70
  71 struct st21nfca_hci_info {
  72         struct nfc_phy_ops *phy_ops;
  73         void *phy_id;
  74
  75         struct nfc_hci_dev *hdev;
  76         struct st21nfca_se_status *se_status;
  77
  78         enum st21nfca_state state;
  79
  80         struct mutex info_lock;
  81
  82         int async_cb_type;
  83         data_exchange_cb_t async_cb;
  84         void *async_cb_context;
  85
  86         struct st21nfca_dep_info dep_info;
  87         struct st21nfca_se_info se_info;
  88 };
  89
  90 /* Reader RF commands */
  91 #define ST21NFCA_WR_XCHG_DATA           0x10
  92
  93 #define ST21NFCA_DEVICE_MGNT_GATE       0x01
  94 #define ST21NFCA_RF_READER_F_GATE       0x14
  95 #define ST21NFCA_RF_CARD_F_GATE                 0x24
  96 #define ST21NFCA_APDU_READER_GATE               0xf0
  97 #define ST21NFCA_CONNECTIVITY_GATE              0x41
  98
  99 #endif /* __LOCAL_ST21NFCA_H_ */