/* * DVB USB library - provides a generic interface for a DVB USB device driver. * * dvb-usb-init.c * * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) * *	This program is free software; you can redistribute it and/or modify it *	under the terms of the GNU General Public License as published by the Free *	Software Foundation, version 2. * * see Documentation/dvb/README.dvb-usb for more information */#include "dvb-usb-common.h"/* debug */int dvb_usb_debug;module_param_named(debug,dvb_usb_debug, int, 0644);MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,pll=4,ts=8,err=16,rc=32,fw=64,mem=128,uxfer=256  (or-able))." DVB_USB_DEBUG_STATUS);int dvb_usb_disable_rc_polling;module_param_named(disable_rc_polling, dvb_usb_disable_rc_polling, int, 0644);MODULE_PARM_DESC(disable_rc_polling, "disable remote control polling (default: 0).");static int dvb_usb_force_pid_filter_usage;module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444);MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0).");static int dvb_usb_adapter_init(struct dvb_usb_device *d){	struct dvb_usb_adapter *adap;	int ret,n;	for (n = 0; n < d->props.num_adapters; n++) {		adap = &d->adapter[n];		adap->dev = d;		adap->id  = n;		memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties));/* speed - when running at FULL speed we need a HW PID filter */		if (d->udev->speed == USB_SPEED_FULL && !(adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER)) {			err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)");			return -ENODEV;		}		if ((d->udev->speed == USB_SPEED_FULL && adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) ||			(adap->props.caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {			info("will use the device's hardware PID filter (table count: %d).",adap->props.pid_filter_count);			adap->pid_filtering  = 1;			adap->max_feed_count = adap->props.pid_filter_count;		} else {			info("will pass the complete MPEG2 transport stream to the software demuxer.");			adap->pid_filtering  = 0;			adap->max_feed_count = 255;		}		if (!adap->pid_filtering &&			dvb_usb_force_pid_filter_usage &&			adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) {			info("pid filter enabled by module option.");			adap->pid_filtering  = 1;			adap->max_feed_count = adap->props.pid_filter_count;		}		if (adap->props.size_of_priv > 0) {			adap->priv = kzalloc(adap->props.size_of_priv,GFP_KERNEL);			if (adap->priv == NULL) {				err("no memory for priv for adapter %d.",n);				return -ENOMEM;			}		}		if ((ret = dvb_usb_adapter_stream_init(adap)) ||			(ret = dvb_usb_adapter_dvb_init(adap)) ||			(ret = dvb_usb_adapter_frontend_init(adap))) {			return ret;		}		d->num_adapters_initialized++;		d->state |= DVB_USB_STATE_DVB;	}	/*	 * when reloading the driver w/o replugging the device	 * sometimes a timeout occures, this helps	 */	if (d->props.generic_bulk_ctrl_endpoint != 0) {		usb_clear_halt(d->udev,usb_sndbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint));		usb_clear_halt(d->udev,usb_rcvbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint));	}	return 0;}static int dvb_usb_adapter_exit(struct dvb_usb_device *d){	int n;	for (n = 0; n < d->num_adapters_initialized; n++) {		dvb_usb_adapter_frontend_exit(&d->adapter[n]);		dvb_usb_adapter_dvb_exit(&d->adapter[n]);		dvb_usb_adapter_stream_exit(&d->adapter[n]);		kfree(d->adapter[n].priv);	}	d->num_adapters_initialized = 0;	d->state &= ~DVB_USB_STATE_DVB;	return 0;}/* general initialization functions */static int dvb_usb_exit(struct dvb_usb_device *d){	deb_info("state before exiting everything: %x\n",d->state);	dvb_usb_remote_exit(d);	dvb_usb_adapter_exit(d);	dvb_usb_i2c_exit(d);	deb_info("state should be zero now: %x\n",d->state);	d->state = DVB_USB_STATE_INIT;	kfree(d->priv);	kfree(d);	return 0;}static int dvb_usb_init(struct dvb_usb_device *d){	int ret = 0;	mutex_init(&d->usb_mutex);	mutex_init(&d->i2c_mutex);	d->state = DVB_USB_STATE_INIT;	if (d->props.size_of_priv > 0) {		d->priv = kzalloc(d->props.size_of_priv,GFP_KERNEL);		if (d->priv == NULL) {			err("no memory for priv in 'struct dvb_usb_device'");			return -ENOMEM;		}	}/* check the capabilities and set appropriate variables */	dvb_usb_device_power_ctrl(d, 1);	if ((ret = dvb_usb_i2c_init(d)) ||		(ret = dvb_usb_adapter_init(d))) {		dvb_usb_exit(d);		return ret;	}	if ((ret = dvb_usb_remote_init(d)))		err("could not initialize remote control.");	dvb_usb_device_power_ctrl(d, 0);	return 0;}/* determine the name and the state of the just found USB device */static struct dvb_usb_device_description * dvb_usb_find_device(struct usb_device *udev,struct dvb_usb_device_properties *props, int *cold){	int i,j;	struct dvb_usb_device_description *desc = NULL;	*cold = -1;	for (i = 0; i < props->num_device_descs; i++) {		for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {			deb_info("check for cold %x %x\n",props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct);			if (props->devices[i].cold_ids[j]->idVendor  == le16_to_cpu(udev->descriptor.idVendor) &&				props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {				*cold = 1;				desc = &props->devices[i];				break;			}		}		if (desc != NULL)			break;		for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {			deb_info("check for warm %x %x\n",props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct);			if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&				props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {				*cold = 0;				desc = &props->devices[i];				break;			}		}	}	if (desc != NULL && props->identify_state != NULL)		props->identify_state(udev,props,&desc,cold);	return desc;}int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff){	if (onoff)		d->powered++;	else		d->powered--;	if (d->powered == 0 || (onoff && d->powered == 1)) { // when switching from 1 to 0 or from 0 to 1		deb_info("power control: %d\n", onoff);		if (d->props.power_ctrl)			return d->props.power_ctrl(d, onoff);	}	return 0;}/* * USB */int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_device_properties		*props, struct module *owner,struct dvb_usb_device **du){	struct usb_device *udev = interface_to_usbdev(intf);	struct dvb_usb_device *d = NULL;	struct dvb_usb_device_description *desc = NULL;	int ret = -ENOMEM,cold=0;	if (du != NULL)		*du = NULL;	if ((desc = dvb_usb_find_device(udev,props,&cold)) == NULL) {		deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");		return -ENODEV;	}	if (cold) {		info("found a '%s' in cold state, will try to load a firmware",desc->name);		ret = dvb_usb_download_firmware(udev,props);		if (!props->no_reconnect || ret != 0)			return ret;	}	info("found a '%s' in warm state.",desc->name);		d = kzalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);	if (d == NULL) {		err("no memory for 'struct dvb_usb_device'");		return ret;	}	d->udev = udev;	memcpy(&d->props,props,sizeof(struct dvb_usb_device_properties));	d->desc = desc;	d->owner = owner;	usb_set_intfdata(intf, d);	if (du != NULL)		*du = d;	ret = dvb_usb_init(d);	if (ret == 0)		info("%s successfully initialized and connected.",desc->name);	else		info("%s error while loading driver (%d)",desc->name,ret);	return ret;}EXPORT_SYMBOL(dvb_usb_device_init);void dvb_usb_device_exit(struct usb_interface *intf){	struct dvb_usb_device *d = usb_get_intfdata(intf);	const char *name = "generic DVB-USB module";	usb_set_intfdata(intf,NULL);	if (d != NULL && d->desc != NULL) {		name = d->desc->name;		dvb_usb_exit(d);	}	info("%s successfully deinitialized and disconnected.",name);}EXPORT_SYMBOL(dvb_usb_device_exit);MODULE_VERSION("1.0");MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");MODULE_LICENSE("GPL");