C++ dvb_frontend_detach函数代码示例

static void em28xx_unregister_dvb(struct em28xx_dvb *dvb)
{
	dvb_net_release(&dvb->net);
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
	dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
	dvb_dmxdev_release(&dvb->dmxdev);
	dvb_dmx_release(&dvb->demux);
	if (dvb->fe[1])
		dvb_unregister_frontend(dvb->fe[1]);
	dvb_unregister_frontend(dvb->fe[0]);
	if (dvb->fe[1] && !dvb->dont_attach_fe1)
		dvb_frontend_detach(dvb->fe[1]);
	dvb_frontend_detach(dvb->fe[0]);
	dvb_unregister_adapter(&dvb->adapter);
}

static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
{
	int ret, i;
	struct dvb_usb_device *d = adap_to_d(adap);

	dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);

	for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
		if (adap->fe[i]) {
			dvb_unregister_frontend(adap->fe[i]);
			dvb_frontend_detach(adap->fe[i]);
		}
	}

	if (d->props->tuner_detach) {
		ret = d->props->tuner_detach(adap);
		if (ret < 0) {
			dev_dbg(&d->udev->dev, "%s: tuner_detach() failed=%d\n",
					__func__, ret);
		}
	}

	if (d->props->frontend_detach) {
		ret = d->props->frontend_detach(adap);
		if (ret < 0) {
			dev_dbg(&d->udev->dev,
					"%s: frontend_detach() failed=%d\n",
					__func__, ret);
		}
	}

	return 0;
}

static int attach_xc3028(u8 addr, struct em28xx *dev)
{
    struct dvb_frontend *fe;
    struct xc2028_config cfg;

    memset(&cfg, 0, sizeof(cfg));
    cfg.i2c_adap  = &dev->i2c_adap;
    cfg.i2c_addr  = addr;
    cfg.callback  = em28xx_tuner_callback;

    if (!dev->dvb->frontend) {
        printk(KERN_ERR "%s/2: dvb frontend not attached. "
               "Can't attach xc3028\n",
               dev->name);
        return -EINVAL;
    }

    fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
    if (!fe) {
        printk(KERN_ERR "%s/2: xc3028 attach failed\n",
               dev->name);
        dvb_frontend_detach(dev->dvb->frontend);
        dev->dvb->frontend = NULL;
        return -EINVAL;
    }

    printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);

    return 0;
}

void __devexit saa716x_dvb_exit(struct saa716x_dev *saa716x)
{
	struct saa716x_adapter *saa716x_adap = saa716x->saa716x_adap;
	int i;

	for (i = 0; i < saa716x->config->adapters; i++) {

		saa716x_fgpi_exit(saa716x, saa716x->config->adap_config[i].ts_port);

		if (saa716x_adap->fe) {
			dvb_unregister_frontend(saa716x_adap->fe);
			dvb_frontend_detach(saa716x_adap->fe);
		}

//		tasklet_kill(&saa716x->tasklet);
		dvb_net_release(&saa716x_adap->dvb_net);
		saa716x_adap->demux.dmx.remove_frontend(&saa716x_adap->demux.dmx, &saa716x_adap->fe_mem);
		saa716x_adap->demux.dmx.remove_frontend(&saa716x_adap->demux.dmx, &saa716x_adap->fe_hw);
		dvb_dmxdev_release(&saa716x_adap->dmxdev);
		dvb_dmx_release(&saa716x_adap->demux);

		dprintk(SAA716x_DEBUG, 1, "dvb_unregister_adapter");
		dvb_unregister_adapter(&saa716x_adap->dvb_adapter);

		saa716x_adap++;
	}

	return;
}

/* ------------------------------------------------------------------ */
#if 0				/* Keep */
static int attach_xc5000(u8 addr, struct cx231xx *dev)
{

	struct dvb_frontend *fe;
	struct xc5000_config cfg;

	memset(&cfg, 0, sizeof(cfg));
	cfg.i2c_adap = &dev->i2c_bus[1].i2c_adap;
	cfg.i2c_addr = addr;

	if (!dev->dvb->frontend) {
		printk(KERN_ERR "%s/2: dvb frontend not attached. "
		       "Can't attach xc5000\n", dev->name);
		return -EINVAL;
	}

	fe = dvb_attach(xc5000_attach, dev->dvb->frontend, &cfg);
	if (!fe) {
		printk(KERN_ERR "%s/2: xc5000 attach failed\n", dev->name);
		dvb_frontend_detach(dev->dvb->frontend);
		dev->dvb->frontend = NULL;
		return -EINVAL;
	}

	printk(KERN_INFO "%s/2: xc5000 attached\n", dev->name);

	return 0;
}

static int em28xx_attach_xc3028(u8 addr, struct em28xx *dev)
{
	struct dvb_frontend *fe;
	struct xc2028_config cfg;
	struct xc2028_ctrl ctl;

	memset(&cfg, 0, sizeof(cfg));
	cfg.i2c_adap  = &dev->i2c_adap[dev->def_i2c_bus];
	cfg.i2c_addr  = addr;

	memset(&ctl, 0, sizeof(ctl));
	em28xx_setup_xc3028(dev, &ctl);
	cfg.ctrl  = &ctl;

	if (!dev->dvb->fe[0]) {
		em28xx_errdev("/2: dvb frontend not attached. "
				"Can't attach xc3028\n");
		return -EINVAL;
	}

	fe = dvb_attach(xc2028_attach, dev->dvb->fe[0], &cfg);
	if (!fe) {
		em28xx_errdev("/2: xc3028 attach failed\n");
		dvb_frontend_detach(dev->dvb->fe[0]);
		dev->dvb->fe[0] = NULL;
		return -EINVAL;
	}

	em28xx_info("%s/2: xc3028 attached\n", dev->name);

	return 0;
}

int __devexit mantis_dvb_exit(struct mantis_pci *mantis)
{
	int err;

	if (mantis->fe) {
		/*                         */
		err = mantis_frontend_shutdown(mantis);
		if (err != 0)
			dprintk(MANTIS_ERROR, 1, "Frontend exit while POWER ON! <%d>", err);
		dvb_unregister_frontend(mantis->fe);
		dvb_frontend_detach(mantis->fe);
	}

	tasklet_kill(&mantis->tasklet);
	dvb_net_release(&mantis->dvbnet);

	mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_mem);
	mantis->demux.dmx.remove_frontend(&mantis->demux.dmx, &mantis->fe_hw);

	dvb_dmxdev_release(&mantis->dmxdev);
	dvb_dmx_release(&mantis->demux);

	dprintk(MANTIS_DEBUG, 1, "dvb_unregister_adapter");
	dvb_unregister_adapter(&mantis->dvb_adapter);

	return 0;
}

void cx18_dvb_unregister(struct cx18_stream *stream)
{
	struct cx18 *cx = stream->cx;
	struct cx18_dvb *dvb = stream->dvb;
	struct dvb_adapter *dvb_adapter;
	struct dvb_demux *dvbdemux;
	struct dmx_demux *dmx;

	CX18_INFO("unregister DVB\n");

	if (dvb == NULL || !dvb->enabled)
		return;

	dvb_adapter = &dvb->dvb_adapter;
	dvbdemux = &dvb->demux;
	dmx = &dvbdemux->dmx;

	dmx->close(dmx);
	dvb_net_release(&dvb->dvbnet);
	dmx->remove_frontend(dmx, &dvb->mem_frontend);
	dmx->remove_frontend(dmx, &dvb->hw_frontend);
	dvb_dmxdev_release(&dvb->dmxdev);
	dvb_dmx_release(dvbdemux);
	dvb_unregister_frontend(dvb->fe);
	dvb_frontend_detach(dvb->fe);
	dvb_unregister_adapter(dvb_adapter);
}

static int pvr2_dvb_frontend_init(struct pvr2_dvb_adapter *adap)
{
	struct pvr2_hdw *hdw = adap->channel.hdw;
	const struct pvr2_dvb_props *dvb_props = hdw->hdw_desc->dvb_props;
	int ret = 0;

	if (dvb_props == NULL) {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS, "fe_props not defined!");
		return -EINVAL;
	}

	ret = pvr2_channel_limit_inputs(
	    &adap->channel,
	    (1 << PVR2_CVAL_INPUT_DTV));
	if (ret) {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
			   "failed to grab control of dtv input (code=%d)",
		    ret);
		return ret;
	}

	if (dvb_props->frontend_attach == NULL) {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
			   "frontend_attach not defined!");
		ret = -EINVAL;
		goto done;
	}

	if ((dvb_props->frontend_attach(adap) == 0) && (adap->fe)) {

		if (dvb_register_frontend(&adap->dvb_adap, adap->fe)) {
			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
				   "frontend registration failed!");
			dvb_frontend_detach(adap->fe);
			adap->fe = NULL;
			ret = -ENODEV;
			goto done;
		}

		if (dvb_props->tuner_attach)
			dvb_props->tuner_attach(adap);

		if (adap->fe->ops.analog_ops.standby)
			adap->fe->ops.analog_ops.standby(adap->fe);

		/*                                           */
		adap->fe->ops.ts_bus_ctrl = pvr2_dvb_bus_ctrl;

	} else {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
			   "no frontend was attached!");
		ret = -ENODEV;
		return ret;
	}

 done:
	pvr2_channel_limit_inputs(&adap->channel, 0);
	return ret;
}

static struct dvb_frontend * frontend_init(struct core_config *cfg, int i)
{
	struct tuner_devctl *ctl = NULL;
	struct dvb_frontend *frontend = NULL;

	printk (KERN_INFO "%s >\n", __FUNCTION__);
	
#if defined(UFS912) || defined(HS7810A) || defined(HS7110) || defined(WHITEBOX) || defined(SPARK)
		frontend = stv090x_attach(&tt1600_stv090x_config, cfg->i2c_adap, STV090x_DEMODULATOR_0, STV090x_TUNER1);
#else
	if (i== 0)
		frontend = stv090x_attach(&tt1600_stv090x_config, cfg->i2c_adap, STV090x_DEMODULATOR_0, STV090x_TUNER1);
	else
/* Dagobert commented: is this correct? second tuner uses demod0 ??? */
		frontend = stv090x_attach(&tt1600_stv090x_config, cfg->i2c_adap, STV090x_DEMODULATOR_0, STV090x_TUNER2);
#endif	
	if (frontend) {
		printk("%s: attached\n", __FUNCTION__);
		
		switch (tunerType) {
#if !defined(FORTIS_HDBOX)
		case SHARP7306:
			ctl = dvb_attach(ix7306_attach, frontend, &bs2s7hz7306a_config, cfg->i2c_adap);
			break;
#endif
		case STV6110X:
		default:
			ctl = dvb_attach(stv6110x_attach, frontend, &stv6110x_config, cfg->i2c_adap);
		}

		if(ctl)	{
			printk("%s: %s attached\n", __FUNCTION__, tuner);
			tt1600_stv090x_config.tuner_init	  	  = ctl->tuner_init;
			tt1600_stv090x_config.tuner_set_mode	  = ctl->tuner_set_mode;
			tt1600_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency;
			tt1600_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency;
			tt1600_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth;
			tt1600_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth;
			tt1600_stv090x_config.tuner_set_bbgain	  = ctl->tuner_set_bbgain;
			tt1600_stv090x_config.tuner_get_bbgain	  = ctl->tuner_get_bbgain;
			tt1600_stv090x_config.tuner_set_refclk	  = ctl->tuner_set_refclk;
			tt1600_stv090x_config.tuner_get_status	  = ctl->tuner_get_status;
		} else {
			printk (KERN_INFO "%s: error attaching %s\n", __FUNCTION__, tuner);
			goto error_out;
		}
	} else {
		printk (KERN_INFO "%s: error attaching\n", __FUNCTION__);
		goto error_out;
	}

	return frontend;

error_out:
	printk("core: Frontend registration failed!\n");
	if (frontend) 
		dvb_frontend_detach(frontend);
	return NULL;
}

static int pvr2_dvb_frontend_exit(struct pvr2_dvb_adapter *adap)
{
	if (adap->fe != NULL) {
		dvb_unregister_frontend(adap->fe);
		dvb_frontend_detach(adap->fe);
	}
	return 0;
}

int as102_dvb_unregister_fe(struct dvb_frontend *fe)
{
	
	dvb_unregister_frontend(fe);

	
	dvb_frontend_detach(fe);

	return 0;
}

int as102_dvb_unregister_fe(struct dvb_frontend *fe)
{
	/* unregister frontend */
	dvb_unregister_frontend(fe);

	/* detach frontend */
	dvb_frontend_detach(fe);

	return 0;
}

int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
{
	int ret, i;

	/* register all given adapter frontends */
	for (i = 0; i < adap->props.num_frontends; i++) {

		if (adap->props.fe[i].frontend_attach == NULL) {
			err("strange: '%s' #%d,%d "
			    "doesn't want to attach a frontend.",
			    adap->dev->desc->name, adap->id, i);

			return 0;
		}

		ret = adap->props.fe[i].frontend_attach(adap);
		if (ret || adap->fe_adap[i].fe == NULL) {
			/* only print error when there is no FE at all */
			if (i == 0)
				err("no frontend was attached by '%s'",
					adap->dev->desc->name);

			return 0;
		}

		adap->fe_adap[i].fe->id = i;

		/* re-assign sleep and wakeup functions */
		adap->fe_adap[i].fe_init = adap->fe_adap[i].fe->ops.init;
		adap->fe_adap[i].fe->ops.init  = dvb_usb_fe_wakeup;
		adap->fe_adap[i].fe_sleep = adap->fe_adap[i].fe->ops.sleep;
		adap->fe_adap[i].fe->ops.sleep = dvb_usb_fe_sleep;

		if (dvb_register_frontend(&adap->dvb_adap, adap->fe_adap[i].fe)) {
			err("Frontend %d registration failed.", i);
			dvb_frontend_detach(adap->fe_adap[i].fe);
			adap->fe_adap[i].fe = NULL;
			/* In error case, do not try register more FEs,
			 * still leaving already registered FEs alive. */
			if (i == 0)
				return -ENODEV;
			else
				return 0;
		}

		/* only attach the tuner if the demod is there */
		if (adap->props.fe[i].tuner_attach != NULL)
			adap->props.fe[i].tuner_attach(adap);

		adap->num_frontends_initialized++;
	}

	return 0;
}

static void dib7090_fe_release(struct aml_dvb *advb, struct aml_fe *fe)
{
	if(fe && fe->fe) {
		pr_dbg("release fe Dib7090 %d\n", fe->id);
		dvb_unregister_frontend(fe->fe);
		dvb_frontend_detach(fe->fe);
		dib7090_fe_cfg_put(fe->cfg);
		fe->fe = NULL;
		fe->cfg = NULL;
		fe->id = -1;
	}
}