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1684a98430
In theory, there should be no more users of I2C_ALGO_* at this point. However, it happens that several drivers were using I2C_ALGO_* for adapter ids, so we need to correct these before we can get rid of all the I2C_ALGO_* definitions. Note that this also fixes a bug in media/video/tvaudio.c: /* don't attach on saa7146 based cards, because dedicated drivers are used */ if ((adap->id & I2C_ALGO_SAA7146)) return 0; This test was plain broken, as it would succeed for many more adapters than just the saa7146: any those id would share at least one bit with the saa7146 id. We are really lucky that the few other adapters we want this driver to work with did not fulfill that condition. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/* dvb-usb-i2c.c is part of the DVB USB library.
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*
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* Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
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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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strncpy(d->i2c_adap.name,d->desc->name,I2C_NAME_SIZE);
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#ifdef I2C_ADAP_CLASS_TV_DIGITAL
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d->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL,
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#else
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d->i2c_adap.class = I2C_CLASS_TV_DIGITAL,
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#endif
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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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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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int dvb_usb_pll_init_i2c(struct dvb_frontend *fe)
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{
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struct dvb_usb_device *d = fe->dvb->priv;
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struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };
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int ret = 0;
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/* if there is nothing to initialize */
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if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&
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d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)
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return 0;
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if (d->tuner_pass_ctrl)
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d->tuner_pass_ctrl(fe,1,d->pll_addr);
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deb_pll("pll init: %x\n",d->pll_addr);
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deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1],
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d->pll_init[2],d->pll_init[3]);
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if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
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err("tuner i2c write failed for pll_init.");
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ret = -EREMOTEIO;
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}
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msleep(1);
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if (d->tuner_pass_ctrl)
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d->tuner_pass_ctrl(fe,0,d->pll_addr);
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return ret;
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}
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EXPORT_SYMBOL(dvb_usb_pll_init_i2c);
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int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5])
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{
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struct dvb_usb_device *d = fe->dvb->priv;
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deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);
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b[0] = d->pll_addr << 1;
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dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth);
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deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]);
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return 0;
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}
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EXPORT_SYMBOL(dvb_usb_pll_set);
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int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
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{
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struct dvb_usb_device *d = fe->dvb->priv;
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int ret = 0;
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u8 b[5];
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struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 };
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dvb_usb_pll_set(fe,fep,b);
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if (d->tuner_pass_ctrl)
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d->tuner_pass_ctrl(fe,1,d->pll_addr);
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if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
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err("tuner i2c write failed for pll_set.");
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ret = -EREMOTEIO;
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}
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msleep(1);
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if (d->tuner_pass_ctrl)
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d->tuner_pass_ctrl(fe,0,d->pll_addr);
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return ret;
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}
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EXPORT_SYMBOL(dvb_usb_pll_set_i2c);
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