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