linux/drivers/nfc/microread/i2c.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * HCI based Driver for Inside Secure microread NFC Chip - i2c layer
 *
 * Copyright (C) 2013 Intel Corporation. All rights reserved.
 */

#define pr_fmt(fmt) …

#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>

#include <linux/nfc.h>
#include <net/nfc/hci.h>
#include <net/nfc/llc.h>

#include "microread.h"

#define MICROREAD_I2C_DRIVER_NAME …

#define MICROREAD_I2C_FRAME_HEADROOM …
#define MICROREAD_I2C_FRAME_TAILROOM …

/* framing in HCI mode */
#define MICROREAD_I2C_LLC_LEN …
#define MICROREAD_I2C_LLC_CRC …
#define MICROREAD_I2C_LLC_LEN_CRC …
#define MICROREAD_I2C_LLC_MIN_SIZE …
#define MICROREAD_I2C_LLC_MAX_PAYLOAD …
#define MICROREAD_I2C_LLC_MAX_SIZE …

struct microread_i2c_phy { … };

#define I2C_DUMP_SKB(info, skb) …

static void microread_i2c_add_len_crc(struct sk_buff *skb)
{ … }

static void microread_i2c_remove_len_crc(struct sk_buff *skb)
{ … }

static int check_crc(const struct sk_buff *skb)
{ … }

static int microread_i2c_enable(void *phy_id)
{ … }

static void microread_i2c_disable(void *phy_id)
{ … }

static int microread_i2c_write(void *phy_id, struct sk_buff *skb)
{ … }


static int microread_i2c_read(struct microread_i2c_phy *phy,
			      struct sk_buff **skb)
{ … }

static irqreturn_t microread_i2c_irq_thread_fn(int irq, void *phy_id)
{ … }

static const struct nfc_phy_ops i2c_phy_ops = …;

static int microread_i2c_probe(struct i2c_client *client)
{ … }

static void microread_i2c_remove(struct i2c_client *client)
{ … }

static const struct i2c_device_id microread_i2c_id[] = …;
MODULE_DEVICE_TABLE(i2c, microread_i2c_id);

static struct i2c_driver microread_i2c_driver = …;

module_i2c_driver(…) …;

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…);