linux-imx

/*

 * Sony NFC Port-100 Series driver

 * Copyright (c) 2013, Intel Corporation.

 *

 * Partly based/Inspired by Stephen Tiedemann's nfcpy

 *

 * 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.

 *

 */

​

#include <linux/module.h>

#include <linux/usb.h>

#include <net/nfc/digital.h>

​

#define VERSION "0.1"

​

#define SONY_VENDOR_ID      0x054c

#define RCS380S_PRODUCT_ID  0x06c1

#define RCS380P_PRODUCT_ID  0x06c3

​

#define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK    | \

               NFC_PROTO_MIFARE_MASK   | \

               NFC_PROTO_FELICA_MASK   | \

               NFC_PROTO_NFC_DEP_MASK  | \

               NFC_PROTO_ISO14443_MASK | \

               NFC_PROTO_ISO14443_B_MASK)

​

#define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \

                  NFC_DIGITAL_DRV_CAPS_TG_CRC)

​

/* Standard port100 frame definitions */

#define PORT100_FRAME_HEADER_LEN (sizeof(struct port100_frame) \

                  + 2) /* data[0] CC, data[1] SCC */

#define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/

​

#define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd))

​

/*

 * Max extended frame payload len, excluding CC and SCC

 * which are already in PORT100_FRAME_HEADER_LEN.

 */

#define PORT100_FRAME_MAX_PAYLOAD_LEN 1001

​

#define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),

                    Postamble (1) */

static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = {

    0x00, 0x00, 0xff, 0x00, 0xff, 0x00

};

​

#define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)])

#define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1])

​

/* start of frame */

#define PORT100_FRAME_SOF   0x00FF

#define PORT100_FRAME_EXT   0xFFFF

#define PORT100_FRAME_ACK   0x00FF

​

/* Port-100 command: in or out */

#define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */

#define PORT100_FRAME_DIR_OUT 0xD6

#define PORT100_FRAME_DIR_IN  0xD7

​

/* Port-100 sub-command */

#define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */

​

#define PORT100_CMD_GET_FIRMWARE_VERSION 0x20

#define PORT100_CMD_GET_COMMAND_TYPE     0x28

#define PORT100_CMD_SET_COMMAND_TYPE     0x2A

​

#define PORT100_CMD_IN_SET_RF       0x00

#define PORT100_CMD_IN_SET_PROTOCOL 0x02

#define PORT100_CMD_IN_COMM_RF      0x04

​

#define PORT100_CMD_TG_SET_RF       0x40

#define PORT100_CMD_TG_SET_PROTOCOL 0x42

#define PORT100_CMD_TG_SET_RF_OFF   0x46

#define PORT100_CMD_TG_COMM_RF      0x48

​

#define PORT100_CMD_SWITCH_RF       0x06

​

#define PORT100_CMD_RESPONSE(cmd) (cmd + 1)

​

#define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \

    ((mask) & (0x01 << (cmd_type)))

#define PORT100_CMD_TYPE_0  0