/* dvb-usb-i2c.c is part of the DVB USB library. * * Copyright (C) 2004-5 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,I2C_NAME_SIZE);#ifdef I2C_ADAP_CLASS_TV_DIGITAL	d->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL,#else	d->i2c_adap.class = I2C_CLASS_TV_DIGITAL,#endif	d->i2c_adap.algo      = d->props.i2c_algo;	d->i2c_adap.algo_data = NULL;	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;}int dvb_usb_pll_init_i2c(struct dvb_frontend *fe){	struct dvb_usb_device *d = fe->dvb->priv;	struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };	int ret = 0;	/* if there is nothing to initialize */	if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&		d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)		return 0;	if (d->tuner_pass_ctrl)		d->tuner_pass_ctrl(fe,1,d->pll_addr);	deb_pll("pll init: %x\n",d->pll_addr);	deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1],			d->pll_init[2],d->pll_init[3]);	if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {		err("tuner i2c write failed for pll_init.");		ret = -EREMOTEIO;	}	msleep(1);	if (d->tuner_pass_ctrl)		d->tuner_pass_ctrl(fe,0,d->pll_addr);	return ret;}EXPORT_SYMBOL(dvb_usb_pll_init_i2c);int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5]){	struct dvb_usb_device *d = fe->dvb->priv;	deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);	b[0] = d->pll_addr << 1;	dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth);	deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]);	return 0;}EXPORT_SYMBOL(dvb_usb_pll_set);int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep){	struct dvb_usb_device *d = fe->dvb->priv;	int ret = 0;	u8 b[5];	struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 };	dvb_usb_pll_set(fe,fep,b);	if (d->tuner_pass_ctrl)		d->tuner_pass_ctrl(fe,1,d->pll_addr);	if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {		err("tuner i2c write failed for pll_set.");		ret = -EREMOTEIO;	}	msleep(1);	if (d->tuner_pass_ctrl)		d->tuner_pass_ctrl(fe,0,d->pll_addr);	return ret;}EXPORT_SYMBOL(dvb_usb_pll_set_i2c);