Cregit: Linux 5.15: dvb-usb-i2c.c

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Johannes Stezenbach	160	78.82%	1	14.29%
Dongliang Mu	17	8.37%	1	14.29%
Jean Delvare	15	7.39%	1	14.29%
David Brownell	8	3.94%	1	14.29%
Patrick Boettcher	1	0.49%	1	14.29%
Mauro Carvalho Chehab	1	0.49%	1	14.29%
Greg Kroah-Hartman	1	0.49%	1	14.29%
Total	203		7

// SPDX-License-Identifier: GPL-2.0
/* dvb-usb-i2c.c is part of the DVB USB library.
 *
 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
 * see dvb-usb-init.c for copyright information.
 *
 * This file contains functions for (de-)initializing an I2C adapter.
 */
#include "dvb-usb-common.h"

int dvb_usb_i2c_init(struct dvb_usb_device *d)
{
	int ret = 0;

	if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER))
		return 0;

	if (d->props.i2c_algo == NULL) {
		err("no i2c algorithm specified");
		ret = -EINVAL;
		goto err;
	}

	strscpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
	d->i2c_adap.algo      = d->props.i2c_algo;
	d->i2c_adap.algo_data = NULL;
	d->i2c_adap.dev.parent = &d->udev->dev;

	i2c_set_adapdata(&d->i2c_adap, d);

	ret = i2c_add_adapter(&d->i2c_adap);
	if (ret < 0) {
		err("could not add i2c adapter");
		goto err;
	}

	d->state |= DVB_USB_STATE_I2C;

err:
	return ret;
}

int dvb_usb_i2c_exit(struct dvb_usb_device *d)
{
	if (d->state & DVB_USB_STATE_I2C)
		i2c_del_adapter(&d->i2c_adap);
	d->state &= ~DVB_USB_STATE_I2C;
	return 0;
}