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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | /* 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);
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