linux-imx

/*

 * Marvell NFC driver: Firmware downloader

 *

 * Copyright (C) 2015, Marvell International Ltd.

 *

 * This software file (the "File") is distributed by Marvell International

 * Ltd. under the terms of the GNU General Public License Version 2, June 1991

 * (the "License").  You may use, redistribute and/or modify this File in

 * accordance with the terms and conditions of the License, a copy of which

 * is available on the worldwide web at

 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.

 *

 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE

 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about

 * this warranty disclaimer.

 */

​

#include <linux/module.h>

#include <asm/unaligned.h>

#include <linux/firmware.h>

#include <linux/nfc.h>

#include <net/nfc/nci.h>

#include <net/nfc/nci_core.h>

#include "nfcmrvl.h"

​

#define FW_DNLD_TIMEOUT         15000

​

#define NCI_OP_PROPRIETARY_BOOT_CMD nci_opcode_pack(NCI_GID_PROPRIETARY, \

                            NCI_OP_PROP_BOOT_CMD)

​

/* FW download states */

​

enum {

    STATE_RESET = 0,

    STATE_INIT,

    STATE_SET_REF_CLOCK,

    STATE_SET_HI_CONFIG,

    STATE_OPEN_LC,

    STATE_FW_DNLD,

    STATE_CLOSE_LC,

    STATE_BOOT

};

​

enum {

    SUBSTATE_WAIT_COMMAND = 0,

    SUBSTATE_WAIT_ACK_CREDIT,

    SUBSTATE_WAIT_NACK_CREDIT,

    SUBSTATE_WAIT_DATA_CREDIT,

};

​

/*

** Patterns for responses

*/

​

static const uint8_t nci_pattern_core_reset_ntf[] = {

    0x60, 0x00, 0x02, 0xA0, 0x01

};

​

static const uint8_t nci_pattern_core_init_rsp[] = {

    0x40, 0x01, 0x11

};

​