88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __LOCAL_ST21NFCA_H_
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#define __LOCAL_ST21NFCA_H_
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#include <net/nfc/hci.h>
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#define HCI_MODE 0
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/* framing in HCI mode */
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#define ST21NFCA_SOF_EOF_LEN 2
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/* Almost every time value is 0 */
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#define ST21NFCA_HCI_LLC_LEN 1
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/* Size in worst case :
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* In normal case CRC len = 2 but byte stuffing
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* may appear in case one CRC byte = ST21NFCA_SOF_EOF
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*/
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#define ST21NFCA_HCI_LLC_CRC 4
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#define ST21NFCA_HCI_LLC_LEN_CRC (ST21NFCA_SOF_EOF_LEN + \
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ST21NFCA_HCI_LLC_LEN + \
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ST21NFCA_HCI_LLC_CRC)
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#define ST21NFCA_HCI_LLC_MIN_SIZE (1 + ST21NFCA_HCI_LLC_LEN_CRC)
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/* Worst case when adding byte stuffing between each byte */
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#define ST21NFCA_HCI_LLC_MAX_PAYLOAD 29
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#define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
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ST21NFCA_HCI_LLC_MAX_PAYLOAD)
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#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
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#define ST21NFCA_HCI_MODE 0
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#define ST21NFCA_NUM_DEVICES 256
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int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
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char *llc_name, int phy_headroom, int phy_tailroom,
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int phy_payload, struct nfc_hci_dev **hdev);
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void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
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enum st21nfca_state {
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ST21NFCA_ST_COLD,
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ST21NFCA_ST_READY,
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};
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struct st21nfca_hci_info {
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struct nfc_phy_ops *phy_ops;
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void *phy_id;
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struct nfc_hci_dev *hdev;
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enum st21nfca_state state;
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struct mutex info_lock;
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int async_cb_type;
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data_exchange_cb_t async_cb;
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void *async_cb_context;
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} __packed;
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/* Reader RF commands */
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#define ST21NFCA_WR_XCHG_DATA 0x10
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#define ST21NFCA_RF_READER_F_GATE 0x14
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#define ST21NFCA_RF_READER_F_DATARATE 0x01
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#define ST21NFCA_RF_READER_F_DATARATE_106 0x01
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#define ST21NFCA_RF_READER_F_DATARATE_212 0x02
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#define ST21NFCA_RF_READER_F_DATARATE_424 0x04
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#endif /* __LOCAL_ST21NFCA_H_ */
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