?? dvb-usb-i2c.c
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/* 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; } strncpy(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;}?? 快捷鍵說明
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