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
55struct st21nfca_se_status {
56	bool is_ese_present;
57	bool is_uicc_present;
58};
59
60int 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);
64void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
65
66enum st21nfca_state {
67	ST21NFCA_ST_COLD,
68	ST21NFCA_ST_READY,
69};
70
71struct 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_ */
100