/*
* 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(disable_rc_polling, "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");
