Commit | Line | Data |
---|---|---|
776338e1 JS |
1 | /* |
2 | * DVB USB library - provides a generic interface for a DVB USB device driver. | |
3 | * | |
4 | * dvb-usb-init.c | |
5 | * | |
4d43e13f | 6 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) |
776338e1 JS |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
10 | * Software Foundation, version 2. | |
11 | * | |
12 | * see Documentation/dvb/README.dvb-usb for more information | |
13 | */ | |
14 | #include "dvb-usb-common.h" | |
15 | ||
16 | /* debug */ | |
17 | int dvb_usb_debug; | |
18 | module_param_named(debug,dvb_usb_debug, int, 0644); | |
4d43e13f | 19 | 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); |
776338e1 | 20 | |
c9b06fa4 PB |
21 | int dvb_usb_disable_rc_polling; |
22 | module_param_named(disable_rc_polling, dvb_usb_disable_rc_polling, int, 0644); | |
23 | MODULE_PARM_DESC(disable_rc_polling, "disable remote control polling (default: 0)."); | |
24 | ||
4d43e13f PB |
25 | static int dvb_usb_force_pid_filter_usage; |
26 | module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444); | |
e927b3fa | 27 | MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0)."); |
4d43e13f | 28 | |
78e92006 | 29 | static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs) |
4d43e13f PB |
30 | { |
31 | struct dvb_usb_adapter *adap; | |
32 | int ret,n; | |
33 | ||
34 | for (n = 0; n < d->props.num_adapters; n++) { | |
35 | adap = &d->adapter[n]; | |
36 | adap->dev = d; | |
37 | adap->id = n; | |
38 | ||
39 | memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties)); | |
40 | ||
41 | /* speed - when running at FULL speed we need a HW PID filter */ | |
42 | if (d->udev->speed == USB_SPEED_FULL && !(adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER)) { | |
43 | err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)"); | |
44 | return -ENODEV; | |
45 | } | |
46 | ||
47 | if ((d->udev->speed == USB_SPEED_FULL && adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) || | |
48 | (adap->props.caps & DVB_USB_ADAP_NEED_PID_FILTERING)) { | |
49 | info("will use the device's hardware PID filter (table count: %d).",adap->props.pid_filter_count); | |
50 | adap->pid_filtering = 1; | |
51 | adap->max_feed_count = adap->props.pid_filter_count; | |
52 | } else { | |
53 | info("will pass the complete MPEG2 transport stream to the software demuxer."); | |
54 | adap->pid_filtering = 0; | |
55 | adap->max_feed_count = 255; | |
56 | } | |
57 | ||
58 | if (!adap->pid_filtering && | |
59 | dvb_usb_force_pid_filter_usage && | |
60 | adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) { | |
61 | info("pid filter enabled by module option."); | |
62 | adap->pid_filtering = 1; | |
63 | adap->max_feed_count = adap->props.pid_filter_count; | |
64 | } | |
65 | ||
66 | if (adap->props.size_of_priv > 0) { | |
67 | adap->priv = kzalloc(adap->props.size_of_priv,GFP_KERNEL); | |
68 | if (adap->priv == NULL) { | |
69 | err("no memory for priv for adapter %d.",n); | |
70 | return -ENOMEM; | |
71 | } | |
72 | } | |
73 | ||
74 | if ((ret = dvb_usb_adapter_stream_init(adap)) || | |
78e92006 | 75 | (ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) || |
4d43e13f PB |
76 | (ret = dvb_usb_adapter_frontend_init(adap))) { |
77 | return ret; | |
78 | } | |
79 | ||
80 | d->num_adapters_initialized++; | |
81 | d->state |= DVB_USB_STATE_DVB; | |
82 | } | |
83 | ||
84 | /* | |
85 | * when reloading the driver w/o replugging the device | |
86 | * sometimes a timeout occures, this helps | |
87 | */ | |
88 | if (d->props.generic_bulk_ctrl_endpoint != 0) { | |
89 | usb_clear_halt(d->udev,usb_sndbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint)); | |
90 | usb_clear_halt(d->udev,usb_rcvbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint)); | |
91 | } | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static int dvb_usb_adapter_exit(struct dvb_usb_device *d) | |
97 | { | |
98 | int n; | |
99 | for (n = 0; n < d->num_adapters_initialized; n++) { | |
100 | dvb_usb_adapter_frontend_exit(&d->adapter[n]); | |
101 | dvb_usb_adapter_dvb_exit(&d->adapter[n]); | |
102 | dvb_usb_adapter_stream_exit(&d->adapter[n]); | |
103 | kfree(d->adapter[n].priv); | |
104 | } | |
105 | d->num_adapters_initialized = 0; | |
106 | d->state &= ~DVB_USB_STATE_DVB; | |
107 | return 0; | |
108 | } | |
109 | ||
110 | ||
776338e1 | 111 | /* general initialization functions */ |
15ac8e66 | 112 | static int dvb_usb_exit(struct dvb_usb_device *d) |
776338e1 JS |
113 | { |
114 | deb_info("state before exiting everything: %x\n",d->state); | |
115 | dvb_usb_remote_exit(d); | |
4d43e13f | 116 | dvb_usb_adapter_exit(d); |
776338e1 | 117 | dvb_usb_i2c_exit(d); |
776338e1 JS |
118 | deb_info("state should be zero now: %x\n",d->state); |
119 | d->state = DVB_USB_STATE_INIT; | |
120 | kfree(d->priv); | |
121 | kfree(d); | |
122 | return 0; | |
123 | } | |
124 | ||
78e92006 | 125 | static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums) |
776338e1 JS |
126 | { |
127 | int ret = 0; | |
128 | ||
3593cab5 IM |
129 | mutex_init(&d->usb_mutex); |
130 | mutex_init(&d->i2c_mutex); | |
776338e1 JS |
131 | |
132 | d->state = DVB_USB_STATE_INIT; | |
133 | ||
4d43e13f PB |
134 | if (d->props.size_of_priv > 0) { |
135 | d->priv = kzalloc(d->props.size_of_priv,GFP_KERNEL); | |
136 | if (d->priv == NULL) { | |
137 | err("no memory for priv in 'struct dvb_usb_device'"); | |
138 | return -ENOMEM; | |
a37ddced | 139 | } |
776338e1 JS |
140 | } |
141 | ||
4d43e13f PB |
142 | /* check the capabilities and set appropriate variables */ |
143 | dvb_usb_device_power_ctrl(d, 1); | |
776338e1 | 144 | |
4d43e13f | 145 | if ((ret = dvb_usb_i2c_init(d)) || |
78e92006 | 146 | (ret = dvb_usb_adapter_init(d, adapter_nums))) { |
776338e1 JS |
147 | dvb_usb_exit(d); |
148 | return ret; | |
149 | } | |
150 | ||
151 | if ((ret = dvb_usb_remote_init(d))) | |
152 | err("could not initialize remote control."); | |
153 | ||
4d43e13f | 154 | dvb_usb_device_power_ctrl(d, 0); |
776338e1 JS |
155 | |
156 | return 0; | |
157 | } | |
158 | ||
159 | /* determine the name and the state of the just found USB device */ | |
4d43e13f | 160 | static struct dvb_usb_device_description * dvb_usb_find_device(struct usb_device *udev,struct dvb_usb_device_properties *props, int *cold) |
776338e1 JS |
161 | { |
162 | int i,j; | |
163 | struct dvb_usb_device_description *desc = NULL; | |
164 | *cold = -1; | |
165 | ||
166 | for (i = 0; i < props->num_device_descs; i++) { | |
167 | ||
168 | for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) { | |
169 | deb_info("check for cold %x %x\n",props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct); | |
170 | if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && | |
171 | props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { | |
172 | *cold = 1; | |
173 | desc = &props->devices[i]; | |
174 | break; | |
175 | } | |
176 | } | |
177 | ||
178 | if (desc != NULL) | |
179 | break; | |
180 | ||
181 | for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) { | |
182 | deb_info("check for warm %x %x\n",props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct); | |
183 | if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && | |
184 | props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { | |
185 | *cold = 0; | |
186 | desc = &props->devices[i]; | |
187 | break; | |
188 | } | |
189 | } | |
190 | } | |
191 | ||
192 | if (desc != NULL && props->identify_state != NULL) | |
193 | props->identify_state(udev,props,&desc,cold); | |
194 | ||
195 | return desc; | |
196 | } | |
197 | ||
4d43e13f PB |
198 | int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff) |
199 | { | |
a37ddced PB |
200 | if (onoff) |
201 | d->powered++; | |
202 | else | |
203 | d->powered--; | |
204 | ||
205 | if (d->powered == 0 || (onoff && d->powered == 1)) { // when switching from 1 to 0 or from 0 to 1 | |
206 | deb_info("power control: %d\n", onoff); | |
4d43e13f PB |
207 | if (d->props.power_ctrl) |
208 | return d->props.power_ctrl(d, onoff); | |
209 | } | |
210 | return 0; | |
211 | } | |
212 | ||
776338e1 JS |
213 | /* |
214 | * USB | |
215 | */ | |
78e92006 JG |
216 | int dvb_usb_device_init(struct usb_interface *intf, |
217 | struct dvb_usb_device_properties *props, | |
218 | struct module *owner, struct dvb_usb_device **du, | |
219 | short *adapter_nums) | |
776338e1 JS |
220 | { |
221 | struct usb_device *udev = interface_to_usbdev(intf); | |
222 | struct dvb_usb_device *d = NULL; | |
223 | struct dvb_usb_device_description *desc = NULL; | |
224 | ||
225 | int ret = -ENOMEM,cold=0; | |
226 | ||
6ff5ef28 PB |
227 | if (du != NULL) |
228 | *du = NULL; | |
229 | ||
776338e1 JS |
230 | if ((desc = dvb_usb_find_device(udev,props,&cold)) == NULL) { |
231 | deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n"); | |
232 | return -ENODEV; | |
233 | } | |
234 | ||
235 | if (cold) { | |
236 | info("found a '%s' in cold state, will try to load a firmware",desc->name); | |
d3707add | 237 | ret = dvb_usb_download_firmware(udev,props); |
5bc63607 | 238 | if (!props->no_reconnect || ret != 0) |
776338e1 | 239 | return ret; |
d3707add PB |
240 | } |
241 | ||
242 | info("found a '%s' in warm state.",desc->name); | |
7408187d | 243 | d = kzalloc(sizeof(struct dvb_usb_device),GFP_KERNEL); |
d3707add PB |
244 | if (d == NULL) { |
245 | err("no memory for 'struct dvb_usb_device'"); | |
246 | return ret; | |
247 | } | |
d3707add PB |
248 | |
249 | d->udev = udev; | |
4d43e13f | 250 | memcpy(&d->props,props,sizeof(struct dvb_usb_device_properties)); |
d3707add PB |
251 | d->desc = desc; |
252 | d->owner = owner; | |
253 | ||
d3707add | 254 | usb_set_intfdata(intf, d); |
776338e1 | 255 | |
d3707add PB |
256 | if (du != NULL) |
257 | *du = d; | |
47dc3d68 | 258 | |
78e92006 | 259 | ret = dvb_usb_init(d, adapter_nums); |
776338e1 JS |
260 | |
261 | if (ret == 0) | |
262 | info("%s successfully initialized and connected.",desc->name); | |
263 | else | |
264 | info("%s error while loading driver (%d)",desc->name,ret); | |
265 | return ret; | |
266 | } | |
267 | EXPORT_SYMBOL(dvb_usb_device_init); | |
268 | ||
269 | void dvb_usb_device_exit(struct usb_interface *intf) | |
270 | { | |
271 | struct dvb_usb_device *d = usb_get_intfdata(intf); | |
272 | const char *name = "generic DVB-USB module"; | |
273 | ||
274 | usb_set_intfdata(intf,NULL); | |
275 | if (d != NULL && d->desc != NULL) { | |
276 | name = d->desc->name; | |
277 | dvb_usb_exit(d); | |
278 | } | |
279 | info("%s successfully deinitialized and disconnected.",name); | |
280 | ||
281 | } | |
282 | EXPORT_SYMBOL(dvb_usb_device_exit); | |
283 | ||
4d43e13f | 284 | MODULE_VERSION("1.0"); |
776338e1 JS |
285 | MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>"); |
286 | MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices"); | |
287 | MODULE_LICENSE("GPL"); |