1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* 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 */
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_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 (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)
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_properties));
d->desc = desc;
d->owner = owner;
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'");
kfree(d);
return -ENOMEM;
}
}
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");
|
