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44 lines
1.0 KiB
44 lines
1.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* dvb-usb-i2c.c is part of the DVB USB library. |
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* |
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* Copyright (C) 2004-6 Patrick Boettcher ([email protected]) |
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* see dvb-usb-init.c for copyright information. |
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* |
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* This file contains functions for (de-)initializing an I2C adapter. |
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*/ |
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#include "dvb-usb-common.h" |
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int dvb_usb_i2c_init(struct dvb_usb_device *d) |
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{ |
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int ret = 0; |
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if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER)) |
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return 0; |
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if (d->props.i2c_algo == NULL) { |
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err("no i2c algorithm specified"); |
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return -EINVAL; |
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} |
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strscpy(d->i2c_adap.name, d->desc->name, sizeof(d->i2c_adap.name)); |
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d->i2c_adap.algo = d->props.i2c_algo; |
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d->i2c_adap.algo_data = NULL; |
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d->i2c_adap.dev.parent = &d->udev->dev; |
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i2c_set_adapdata(&d->i2c_adap, d); |
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if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0) |
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err("could not add i2c adapter"); |
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d->state |= DVB_USB_STATE_I2C; |
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return ret; |
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} |
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int dvb_usb_i2c_exit(struct dvb_usb_device *d) |
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{ |
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if (d->state & DVB_USB_STATE_I2C) |
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i2c_del_adapter(&d->i2c_adap); |
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d->state &= ~DVB_USB_STATE_I2C; |
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return 0; |
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}
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