/*
* 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, o, adapter_count;
/* resolve adapter count */
adapter_count = d->props.num_adapters;
if (d->props.get_adapter_count) {
ret = d->props.get_adapter_count(d);
if (ret < 0)
goto err;
adapter_count = ret;
}
for (n = 0; n < adapter_count; n++) {
adap = &d->adapter[n];
adap->dev = d;
adap->id = n;
memcpy(&adap->props, &d->props.adapter[n],
sizeof(struct dvb_usb_adapter_properties));
for (o = 0; o < adap->props.num_frontends; o++) {
struct dvb_usb_adapter_fe_properties *props =
&adap->props.fe[o];
/* speed - when running at FULL speed we need a HW
* PID filter */
if (d->udev->speed == USB_SPEED_FULL &&
!(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 &&
props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
(props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
info("will use the device's hardware PID" \
" filter (table count: %d).",
props->pid_filter_count);
adap->fe_adap[o].pid_filtering = 1;
adap->fe_adap[o].max_feed_count =
props->pid_filter_count;
} else {
info("will pass the complete MPEG2 transport" \
" stream to the software demuxer.");
adap->fe_adap[o].pid_filtering = 0;
adap->fe_adap[o].max_feed_count = 255;
}
if (!adap->fe_adap[o].pid_filtering &&
dvb_usb_force_pid_filter_usage &&
props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
info("pid filter enabled by module option.");
adap->fe_adap[o].pid_filtering = 1;
adap->fe_adap[o].max_feed_count =
props->pid_filter_count;
}
if (props->size_of_priv > 0) {
adap->fe_adap[o].priv = kzalloc(props->size_of_priv, GFP_KERNEL);
if (adap->fe_adap[o].priv == NULL) {
err("no memory for priv for adapter" \
" %d fe %d.", n, o);
return -ENOMEM;
}
}
}
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;
}
}
ret = dvb_usb_adapter_stream_init(adap);
if (ret)
return ret;
ret = dvb_usb_adapter_dvb_init(adap);
if (ret)
return ret;
ret = dvb_usb_adapter_frontend_init(adap);
if (ret)
return ret;
/* use exclusive FE lock if there is multiple shared FEs */
if (adap->fe_adap[1].fe)
adap->dvb_adap.mfe_shared = 1;
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;
err:
pr_debug("%s: failed=%d\n", __func__, ret);
return ret;
}
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;
d->state = DVB_USB_STATE_INIT;
/* check the capabilities and set appropriate variables */
dvb_usb_device_power_ctrl(d, 1);
/* read config */
if (d->props.read_config) {
ret = d->props.read_config(d);
if (ret < 0)
goto err;
}
ret = dvb_usb_i2c_init(d);
if (ret == 0)
ret = dvb_usb_adapter_init(d);
if (ret) {
dvb_usb_exit(d);
return ret;
}
if (d->props.init)
d->props.init(d);
ret = dvb_usb_remote_init(d);
if (ret)
err("could not initialize remote control.");
dvb_usb_device_power_ctrl(d, 0);
return 0;
err:
pr_debug("%s: failed=%d\n", __func__, ret);
return ret;
}
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_usbv2_device_init(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct dvb_usb_device *d = NULL;
struct dvb_usb_driver_info *driver_info =
(struct dvb_usb_driver_info *) id->driver_info;
const struct dvb_usb_device_properties *props = driver_info->props;
int ret = -ENOMEM;
bool cold = false;
d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
if (d == NULL) {
err("no memory for 'struct dvb_usb_device'");
return -ENOMEM;
}
d->udev = udev;
d->name = driver_info->name;
d->rc_map = driver_info->rc_map;
memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
mutex_init(&d->usb_mutex);
mutex_init(&d->i2c_mutex);
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'");
ret = -ENOMEM;
goto err_kfree;
}
}
if (d->props.identify_state) {
ret = d->props.identify_state(d);
if (ret == 0) {
;
} else if (ret == COLD) {
cold = true;
ret = 0;
} else {
goto err_kfree;
}
}
if (cold) {
info("found a '%s' in cold state, will try to load a firmware",
d->name);
ret = dvb_usb_download_firmware(d);
if (ret == 0) {
;
} else if (ret == RECONNECTS_USB) {
ret = 0;
goto err_kfree;
} else {
goto err_kfree;
}
}
info("found a '%s' in warm state.", d->name);
usb_set_intfdata(intf, d);
ret = dvb_usb_init(d);
if (ret == 0)
info("%s successfully initialized and connected.", d->name);
else
info("%s error while loading driver (%d)", d->name, ret);
return 0;
err_kfree:
kfree(d->priv);
kfree(d);
return ret;
}
EXPORT_SYMBOL(dvb_usbv2_device_init);
void dvb_usbv2_device_exit(struct usb_interface *intf)
{
struct dvb_usb_device *d = usb_get_intfdata(intf);
const char *name = NULL;
usb_set_intfdata(intf, NULL);
if (d) {
name = d->name;
dvb_usb_exit(d);
}
info("%s successfully deinitialized and disconnected.", name);
}
EXPORT_SYMBOL(dvb_usbv2_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");
