linux/drivers/media/common/b2c2/flexcop-i2c.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
 * flexcop-i2c.c - flexcop internal 2Wire bus (I2C) and dvb i2c initialization
 * see flexcop.c for copyright information
 */
#include "flexcop.h"

#define FC_MAX_I2C_RETRIES …

static int flexcop_i2c_operation(struct flexcop_device *fc,
		flexcop_ibi_value *r100)
{ … }

static int flexcop_i2c_read4(struct flexcop_i2c_adapter *i2c,
		flexcop_ibi_value r100, u8 *buf)
{ … }

static int flexcop_i2c_write4(struct flexcop_device *fc,
		flexcop_ibi_value r100, u8 *buf)
{ … }

int flexcop_i2c_request(struct flexcop_i2c_adapter *i2c,
			flexcop_access_op_t op, u8 chipaddr,
			u8 start_addr, u8 *buf, u16 size)
{ … }
/* exported for PCI i2c */
EXPORT_SYMBOL(…);

/* master xfer callback for demodulator */
static int flexcop_master_xfer(struct i2c_adapter *i2c_adap,
		struct i2c_msg msgs[], int num)
{ … }

static u32 flexcop_i2c_func(struct i2c_adapter *adapter)
{ … }

static struct i2c_algorithm flexcop_algo = …;

int flexcop_i2c_init(struct flexcop_device *fc)
{ … }

void flexcop_i2c_exit(struct flexcop_device *fc)
{ … }