linux-imx

/*

 * NFC Digital Protocol stack

 * Copyright (c) 2013, Intel Corporation.

 *

 * 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 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.

 *

 */

​

#ifndef __DIGITAL_H

#define __DIGITAL_H

​

#include <net/nfc/nfc.h>

#include <net/nfc/digital.h>

​

#include <linux/crc-ccitt.h>

#include <linux/crc-itu-t.h>

​

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

                 __LINE__, req)

​

#define DIGITAL_CMD_IN_SEND        0

#define DIGITAL_CMD_TG_SEND        1

#define DIGITAL_CMD_TG_LISTEN      2

#define DIGITAL_CMD_TG_LISTEN_MDAA 3

#define DIGITAL_CMD_TG_LISTEN_MD   4

​

#define DIGITAL_MAX_HEADER_LEN 7

#define DIGITAL_CRC_LEN        2

​

#define DIGITAL_SENSF_NFCID2_NFC_DEP_B1 0x01

#define DIGITAL_SENSF_NFCID2_NFC_DEP_B2 0xFE

​

#define DIGITAL_SENS_RES_NFC_DEP 0x0100

#define DIGITAL_SEL_RES_NFC_DEP  0x40

#define DIGITAL_SENSF_FELICA_SC  0xFFFF

​

#define DIGITAL_DRV_CAPS_IN_CRC(ddev) \

    ((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_IN_CRC)

#define DIGITAL_DRV_CAPS_TG_CRC(ddev) \

    ((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_TG_CRC)

​

struct digital_data_exch {

    data_exchange_cb_t cb;

    void *cb_context;

};

​

struct sk_buff *digital_skb_alloc(struct nfc_digital_dev *ddev,

                  unsigned int len);

​

int digital_send_cmd(struct nfc_digital_dev *ddev, u8 cmd_type,

             struct sk_buff *skb, struct digital_tg_mdaa_params *params,

             u16 timeout, nfc_digital_cmd_complete_t cmd_cb,

             void *cb_context);

​

int digital_in_configure_hw(struct nfc_digital_dev *ddev, int type, int param);

static inline int digital_in_send_cmd(struct nfc_digital_dev *ddev,