/* * DVB USB library - provides a generic interface for a DVB USB device driver. * * dvb-usb-init.c * * Copyright (C) 2004-5 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 (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).");/* general initialization functions */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_fe_exit(d);	dvb_usb_i2c_exit(d);	dvb_usb_dvb_exit(d);	dvb_usb_urb_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;	sema_init(&d->usb_sem, 1);	sema_init(&d->i2c_sem, 1);	d->state = DVB_USB_STATE_INIT;/* check the capabilites and set appropriate variables *//* speed - when running at FULL speed we need a HW PID filter */	if (d->udev->speed == USB_SPEED_FULL && !(d->props.caps & DVB_USB_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 && d->props.caps & DVB_USB_HAS_PID_FILTER) ||		(d->props.caps & DVB_USB_NEED_PID_FILTERING)) {		info("will use the device's hardware PID filter (table count: %d).",d->props.pid_filter_count);		d->pid_filtering = 1;		d->max_feed_count = d->props.pid_filter_count;	} else {		info("will pass the complete MPEG2 transport stream to the software demuxer.");		d->pid_filtering = 0;		d->max_feed_count = 255;	}	if (d->props.power_ctrl)		d->props.power_ctrl(d,1);	if ((ret = dvb_usb_urb_init(d)) ||		(ret = dvb_usb_dvb_init(d)) ||		(ret = dvb_usb_i2c_init(d)) ||		(ret = dvb_usb_fe_init(d))) {		dvb_usb_exit(d);		return ret;	}	if ((ret = dvb_usb_remote_init(d)))		err("could not initialize remote control.");	if (d->props.power_ctrl)		d->props.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_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;}/* * USB */int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_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 ((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 = usb_cypress_load_firmware(udev,props->firmware,props->usb_ctrl);	} else {		info("found a '%s' in warm state.",desc->name);		d = kmalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);		if (d == NULL) {			err("no memory for 'struct dvb_usb_device'");			return ret;		}		memset(d,0,sizeof(struct dvb_usb_device));		d->udev = udev;		memcpy(&d->props,props,sizeof(struct dvb_usb_properties));		d->desc = desc;		d->owner = owner;		if (d->props.size_of_priv > 0) {			d->priv = kmalloc(d->props.size_of_priv,GFP_KERNEL);			if (d->priv == NULL) {				err("no memory for priv in 'struct dvb_usb_device'");				kfree(d);				return -ENOMEM;			}			memset(d->priv,0,d->props.size_of_priv);		}		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("0.3");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");