Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Johannes Stezenbach |
797 |
41.82% |
1 |
3.57% |
| Patrick Boettcher |
627 |
32.90% |
9 |
32.14% |
| Takashi Iwai |
162 |
8.50% |
2 |
7.14% |
| Michael Ira Krufky |
135 |
7.08% |
1 |
3.57% |
| Maciej S. Szmigiero |
54 |
2.83% |
1 |
3.57% |
| Pavel Skripkin |
40 |
2.10% |
1 |
3.57% |
| Oliver Neukum |
31 |
1.63% |
1 |
3.57% |
| Janne Grunau |
18 |
0.94% |
1 |
3.57% |
| Antti Palosaari |
17 |
0.89% |
1 |
3.57% |
| Mauro Carvalho Chehab |
10 |
0.52% |
3 |
10.71% |
| Sean Young |
5 |
0.26% |
1 |
3.57% |
| Ingo Molnar |
4 |
0.21% |
1 |
3.57% |
| Dongliang Mu |
2 |
0.10% |
1 |
3.57% |
| Michael Mauch |
1 |
0.05% |
1 |
3.57% |
| Dan Carpenter |
1 |
0.05% |
1 |
3.57% |
| Thomas Gleixner |
1 |
0.05% |
1 |
3.57% |
| Adrian Bunk |
1 |
0.05% |
1 |
3.57% |
| Total |
1906 |
|
28 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* 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@posteo.de)
*
* see Documentation/driver-api/media/drivers/dvb-usb.rst 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, short *adapter_nrs)
{
struct dvb_usb_adapter *adap;
int ret, n, o;
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));
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, adapter_nrs);
if (ret)
goto dvb_init_err;
ret = dvb_usb_adapter_frontend_init(adap);
if (ret)
goto frontend_init_err;
/* 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 occurs, 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;
frontend_init_err:
dvb_usb_adapter_dvb_exit(adap);
dvb_init_err:
dvb_usb_adapter_stream_exit(adap);
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;
if (d->priv != NULL && d->props.priv_destroy != NULL)
d->props.priv_destroy(d);
kfree(d->priv);
kfree(d);
return 0;
}
static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
{
int ret = 0;
mutex_init(&d->data_mutex);
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;
}
if (d->props.priv_init != NULL) {
ret = d->props.priv_init(d);
if (ret != 0)
goto err_priv_init;
}
}
/* check the capabilities and set appropriate variables */
dvb_usb_device_power_ctrl(d, 1);
ret = dvb_usb_i2c_init(d);
if (ret)
goto err_i2c_init;
ret = dvb_usb_adapter_init(d, adapter_nums);
if (ret)
goto err_adapter_init;
if ((ret = dvb_usb_remote_init(d)))
err("could not initialize remote control.");
dvb_usb_device_power_ctrl(d, 0);
return 0;
err_adapter_init:
dvb_usb_adapter_exit(d);
dvb_usb_i2c_exit(d);
err_i2c_init:
if (d->priv && d->props.priv_destroy)
d->props.priv_destroy(d);
err_priv_init:
kfree(d->priv);
d->priv = NULL;
return ret;
}
/* determine the name and the state of the just found USB device */
static const struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, const struct dvb_usb_device_properties *props, int *cold)
{
int i, j;
const 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,
const struct dvb_usb_device_properties *props,
struct module *owner, struct dvb_usb_device **du,
short *adapter_nums)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct dvb_usb_device *d = NULL;
const struct dvb_usb_device_description *desc = NULL;
int ret = -ENOMEM, cold = 0;
if (du != NULL)
*du = NULL;
d = kzalloc(sizeof(*d), GFP_KERNEL);
if (!d) {
err("no memory for 'struct dvb_usb_device'");
return -ENOMEM;
}
memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
desc = dvb_usb_find_device(udev, &d->props, &cold);
if (!desc) {
deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
ret = -ENODEV;
goto error;
}
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)
goto error;
}
info("found a '%s' in warm state.", desc->name);
d->udev = udev;
d->desc = desc;
d->owner = owner;
usb_set_intfdata(intf, d);
ret = dvb_usb_init(d, adapter_nums);
if (ret) {
info("%s error while loading driver (%d)", desc->name, ret);
goto error;
}
if (du)
*du = d;
info("%s successfully initialized and connected.", desc->name);
return 0;
error:
usb_set_intfdata(intf, NULL);
kfree(d);
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 *default_name = "generic DVB-USB module";
char name[40];
usb_set_intfdata(intf, NULL);
if (d != NULL && d->desc != NULL) {
strscpy(name, d->desc->name, sizeof(name));
dvb_usb_exit(d);
} else {
strscpy(name, default_name, sizeof(name));
}
info("%s successfully deinitialized and disconnected.", name);
}
EXPORT_SYMBOL(dvb_usb_device_exit);
MODULE_VERSION("1.0");
MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
MODULE_LICENSE("GPL");