linux-imx

/*

 * 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/>.

 */

​

#include <net/nfc/hci.h>

​

#include "st21nfca.h"

​

#define ST21NFCA_NFCIP1_INITIATOR 0x00

#define ST21NFCA_NFCIP1_REQ 0xd4

#define ST21NFCA_NFCIP1_RES 0xd5

#define ST21NFCA_NFCIP1_ATR_REQ 0x00

#define ST21NFCA_NFCIP1_ATR_RES 0x01

#define ST21NFCA_NFCIP1_PSL_REQ 0x04

#define ST21NFCA_NFCIP1_PSL_RES 0x05

#define ST21NFCA_NFCIP1_DEP_REQ 0x06

#define ST21NFCA_NFCIP1_DEP_RES 0x07

​

#define ST21NFCA_NFC_DEP_PFB_PNI(pfb)     ((pfb) & 0x03)

#define ST21NFCA_NFC_DEP_PFB_TYPE(pfb) ((pfb) & 0xE0)

#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \

                ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)

#define ST21NFCA_NFC_DEP_DID_BIT_SET(pfb) ((pfb) & 0x04)

#define ST21NFCA_NFC_DEP_NAD_BIT_SET(pfb) ((pfb) & 0x08)

#define ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT 0x10

​

#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \

                ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)

​

#define ST21NFCA_NFC_DEP_PFB_I_PDU          0x00

#define ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU   0x40

#define ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU 0x80

​

#define ST21NFCA_ATR_REQ_MIN_SIZE 17

#define ST21NFCA_ATR_REQ_MAX_SIZE 65

#define ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B 0x30

#define ST21NFCA_GB_BIT  0x02

​

#define ST21NFCA_EVT_SEND_DATA      0x10

#define ST21NFCA_EVT_FIELD_ON           0x11

#define ST21NFCA_EVT_CARD_DEACTIVATED   0x12

#define ST21NFCA_EVT_CARD_ACTIVATED     0x13

#define ST21NFCA_EVT_FIELD_OFF          0x14

​

#define ST21NFCA_EVT_CARD_F_BITRATE 0x16

#define ST21NFCA_EVT_READER_F_BITRATE 0x13

#define ST21NFCA_PSL_REQ_SEND_SPEED(brs) (brs & 0x38)

#define ST21NFCA_PSL_REQ_RECV_SPEED(brs) (brs & 0x07)

#define ST21NFCA_PP2LRI(pp) ((pp & 0x30) >> 4)

#define ST21NFCA_CARD_BITRATE_212 0x01

#define ST21NFCA_CARD_BITRATE_424 0x02

​

#define ST21NFCA_DEFAULT_TIMEOUT 0x0a

​

​

#define PROTOCOL_ERR(req) pr_err("%d: ST21NFCA Protocol error: %s\n", \

                 __LINE__, req)

​

struct st21nfca_atr_req {

    u8 length;

    u8 cmd0;

    u8 cmd1;

    u8 nfcid3[NFC_NFCID3_MAXSIZE];

    u8 did;

    u8 bsi;

    u8 bri;

    u8 ppi;

    u8 gbi[0];

} __packed;

​

struct st21nfca_atr_res {

    u8 length;

    u8 cmd0;

    u8 cmd1;

    u8 nfcid3[NFC_NFCID3_MAXSIZE];

    u8 did;

    u8 bsi;

    u8 bri;

    u8 to;

    u8 ppi;