45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
/* dvb-usb-i2c.c is part of the DVB USB library.
|
|
*
|
|
* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.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");
|
|
return -EINVAL;
|
|
}
|
|
|
|
strlcpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name));
|
|
d->i2c_adap.class = I2C_CLASS_TV_DIGITAL,
|
|
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);
|
|
|
|
if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0)
|
|
err("could not add i2c adapter");
|
|
|
|
d->state |= DVB_USB_STATE_I2C;
|
|
|
|
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;
|
|
}
|