cregit-Linux how code gets into the kernel

Release 4.7 drivers/nfc/nfcmrvl/fw_dnld.h

/**
 * 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.
 **/

#ifndef __NFCMRVL_FW_DNLD_H__

#define __NFCMRVL_FW_DNLD_H__

#include <linux/workqueue.h>


#define NFCMRVL_FW_MAGIC		0x88888888


#define NCI_OP_PROP_BOOT_CMD		0x3A


#define NCI_CORE_LC_PROP_FW_DL		0xFD

#define NCI_CORE_LC_CONNID_PROP_FW_DL	0x02


#define HELPER_CMD_ENTRY_POINT		0x04

#define HELPER_CMD_PACKET_FORMAT	0xA5

#define HELPER_ACK_PACKET_FORMAT	0x5A

#define HELPER_RETRY_REQUESTED		(1 << 15)

struct nfcmrvl_private;


struct nfcmrvl_fw_uart_config {
	
uint8_t flow_control;
	
uint32_t baudrate;
} 
__packed;


struct nfcmrvl_fw_i2c_config {
	
uint32_t clk;
} 
__packed;


struct nfcmrvl_fw_spi_config {
	
uint32_t clk;
} 
__packed;


struct nfcmrvl_fw_binary_config {
	
uint32_t offset;
	union {
		
void *config;
		
struct nfcmrvl_fw_uart_config uart;
		
struct nfcmrvl_fw_i2c_config i2c;
		
struct nfcmrvl_fw_spi_config spi;
		
uint8_t reserved[64];
	};
} 
__packed;


struct nfcmrvl_fw {
	
uint32_t magic;
	
uint32_t ref_clock;
	
uint32_t phy;
	
struct nfcmrvl_fw_binary_config bootrom;
	
struct nfcmrvl_fw_binary_config helper;
	
struct nfcmrvl_fw_binary_config firmware;
	
uint8_t reserved[64];
} 
__packed;


struct nfcmrvl_fw_dnld {
	
char name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
	
const struct firmware *fw;

	
const struct nfcmrvl_fw *header;
	
const struct nfcmrvl_fw_binary_config *binary_config;

	
int state;
	
int substate;
	
int offset;
	
int chunk_len;

	
struct workqueue_struct	*rx_wq;
	
struct work_struct rx_work;
	
struct sk_buff_head rx_q;

	
struct timer_list timer;
};

int nfcmrvl_fw_dnld_init(struct nfcmrvl_private *priv);
void nfcmrvl_fw_dnld_deinit(struct nfcmrvl_private *priv);
void nfcmrvl_fw_dnld_abort(struct nfcmrvl_private *priv);
int nfcmrvl_fw_dnld_start(struct nci_dev *ndev, const char *firmware_name);
void nfcmrvl_fw_dnld_recv_frame(struct nfcmrvl_private *priv,
				struct sk_buff *skb);

#endif

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