1
2
3
4
5
6
7
8
9
10
11#include "dvb-usb-common.h"
12
13
14int dvb_usb_debug;
15module_param_named(debug, dvb_usb_debug, int, 0644);
16MODULE_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);
17
18int dvb_usb_disable_rc_polling;
19module_param_named(disable_rc_polling, dvb_usb_disable_rc_polling, int, 0644);
20MODULE_PARM_DESC(disable_rc_polling, "disable remote control polling (default: 0).");
21
22static int dvb_usb_force_pid_filter_usage;
23module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444);
24MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0).");
25
26static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs)
27{
28 struct dvb_usb_adapter *adap;
29 int ret, n, o;
30
31 for (n = 0; n < d->props.num_adapters; n++) {
32 adap = &d->adapter[n];
33 adap->dev = d;
34 adap->id = n;
35
36 memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties));
37
38 for (o = 0; o < adap->props.num_frontends; o++) {
39 struct dvb_usb_adapter_fe_properties *props = &adap->props.fe[o];
40
41 if (d->udev->speed == USB_SPEED_FULL && !(props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
42 err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)");
43 return -ENODEV;
44 }
45
46 if ((d->udev->speed == USB_SPEED_FULL && props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
47 (props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
48 info("will use the device's hardware PID filter (table count: %d).", props->pid_filter_count);
49 adap->fe_adap[o].pid_filtering = 1;
50 adap->fe_adap[o].max_feed_count = props->pid_filter_count;
51 } else {
52 info("will pass the complete MPEG2 transport stream to the software demuxer.");
53 adap->fe_adap[o].pid_filtering = 0;
54 adap->fe_adap[o].max_feed_count = 255;
55 }
56
57 if (!adap->fe_adap[o].pid_filtering &&
58 dvb_usb_force_pid_filter_usage &&
59 props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
60 info("pid filter enabled by module option.");
61 adap->fe_adap[o].pid_filtering = 1;
62 adap->fe_adap[o].max_feed_count = props->pid_filter_count;
63 }
64
65 if (props->size_of_priv > 0) {
66 adap->fe_adap[o].priv = kzalloc(props->size_of_priv, GFP_KERNEL);
67 if (adap->fe_adap[o].priv == NULL) {
68 err("no memory for priv for adapter %d fe %d.", n, o);
69 return -ENOMEM;
70 }
71 }
72 }
73
74 if (adap->props.size_of_priv > 0) {
75 adap->priv = kzalloc(adap->props.size_of_priv, GFP_KERNEL);
76 if (adap->priv == NULL) {
77 err("no memory for priv for adapter %d.", n);
78 return -ENOMEM;
79 }
80 }
81
82 ret = dvb_usb_adapter_stream_init(adap);
83 if (ret)
84 return ret;
85
86 ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs);
87 if (ret)
88 goto dvb_init_err;
89
90 ret = dvb_usb_adapter_frontend_init(adap);
91 if (ret)
92 goto frontend_init_err;
93
94
95 if (adap->fe_adap[1].fe)
96 adap->dvb_adap.mfe_shared = 1;
97
98 d->num_adapters_initialized++;
99 d->state |= DVB_USB_STATE_DVB;
100 }
101
102
103
104
105
106 if (d->props.generic_bulk_ctrl_endpoint != 0) {
107 usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
108 usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
109 }
110
111 return 0;
112
113frontend_init_err:
114 dvb_usb_adapter_dvb_exit(adap);
115dvb_init_err:
116 dvb_usb_adapter_stream_exit(adap);
117 return ret;
118}
119
120static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
121{
122 int n;
123
124 for (n = 0; n < d->num_adapters_initialized; n++) {
125 dvb_usb_adapter_frontend_exit(&d->adapter[n]);
126 dvb_usb_adapter_dvb_exit(&d->adapter[n]);
127 dvb_usb_adapter_stream_exit(&d->adapter[n]);
128 kfree(d->adapter[n].priv);
129 }
130 d->num_adapters_initialized = 0;
131 d->state &= ~DVB_USB_STATE_DVB;
132 return 0;
133}
134
135
136
137static int dvb_usb_exit(struct dvb_usb_device *d)
138{
139 deb_info("state before exiting everything: %x\n", d->state);
140 dvb_usb_remote_exit(d);
141 dvb_usb_adapter_exit(d);
142 dvb_usb_i2c_exit(d);
143 deb_info("state should be zero now: %x\n", d->state);
144 d->state = DVB_USB_STATE_INIT;
145
146 if (d->priv != NULL && d->props.priv_destroy != NULL)
147 d->props.priv_destroy(d);
148
149 kfree(d->priv);
150 kfree(d);
151 return 0;
152}
153
154static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
155{
156 int ret = 0;
157
158 mutex_init(&d->data_mutex);
159 mutex_init(&d->usb_mutex);
160 mutex_init(&d->i2c_mutex);
161
162 d->state = DVB_USB_STATE_INIT;
163
164 if (d->props.size_of_priv > 0) {
165 d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL);
166 if (d->priv == NULL) {
167 err("no memory for priv in 'struct dvb_usb_device'");
168 return -ENOMEM;
169 }
170
171 if (d->props.priv_init != NULL) {
172 ret = d->props.priv_init(d);
173 if (ret != 0)
174 goto err_priv_init;
175 }
176 }
177
178
179 dvb_usb_device_power_ctrl(d, 1);
180
181 ret = dvb_usb_i2c_init(d);
182 if (ret)
183 goto err_i2c_init;
184 ret = dvb_usb_adapter_init(d, adapter_nums);
185 if (ret)
186 goto err_adapter_init;
187
188 if ((ret = dvb_usb_remote_init(d)))
189 err("could not initialize remote control.");
190
191 dvb_usb_device_power_ctrl(d, 0);
192
193 return 0;
194
195err_adapter_init:
196 dvb_usb_adapter_exit(d);
197 dvb_usb_i2c_exit(d);
198err_i2c_init:
199 if (d->priv && d->props.priv_destroy)
200 d->props.priv_destroy(d);
201err_priv_init:
202 kfree(d->priv);
203 d->priv = NULL;
204 return ret;
205}
206
207
208static const struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, const struct dvb_usb_device_properties *props, int *cold)
209{
210 int i, j;
211 const struct dvb_usb_device_description *desc = NULL;
212
213 *cold = -1;
214
215 for (i = 0; i < props->num_device_descs; i++) {
216
217 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {
218 deb_info("check for cold %x %x\n", props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct);
219 if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
220 props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
221 *cold = 1;
222 desc = &props->devices[i];
223 break;
224 }
225 }
226
227 if (desc != NULL)
228 break;
229
230 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {
231 deb_info("check for warm %x %x\n", props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct);
232 if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
233 props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
234 *cold = 0;
235 desc = &props->devices[i];
236 break;
237 }
238 }
239 }
240
241 if (desc != NULL && props->identify_state != NULL)
242 props->identify_state(udev, props, &desc, cold);
243
244 return desc;
245}
246
247int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff)
248{
249 if (onoff)
250 d->powered++;
251 else
252 d->powered--;
253
254 if (d->powered == 0 || (onoff && d->powered == 1)) {
255 deb_info("power control: %d\n", onoff);
256 if (d->props.power_ctrl)
257 return d->props.power_ctrl(d, onoff);
258 }
259 return 0;
260}
261
262
263
264
265int dvb_usb_device_init(struct usb_interface *intf,
266 const struct dvb_usb_device_properties *props,
267 struct module *owner, struct dvb_usb_device **du,
268 short *adapter_nums)
269{
270 struct usb_device *udev = interface_to_usbdev(intf);
271 struct dvb_usb_device *d = NULL;
272 const struct dvb_usb_device_description *desc = NULL;
273
274 int ret = -ENOMEM, cold = 0;
275
276 if (du != NULL)
277 *du = NULL;
278
279 d = kzalloc(sizeof(*d), GFP_KERNEL);
280 if (!d) {
281 err("no memory for 'struct dvb_usb_device'");
282 return -ENOMEM;
283 }
284
285 memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
286
287 desc = dvb_usb_find_device(udev, &d->props, &cold);
288 if (!desc) {
289 deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
290 ret = -ENODEV;
291 goto error;
292 }
293
294 if (cold) {
295 info("found a '%s' in cold state, will try to load a firmware", desc->name);
296 ret = dvb_usb_download_firmware(udev, props);
297 if (!props->no_reconnect || ret != 0)
298 goto error;
299 }
300
301 info("found a '%s' in warm state.", desc->name);
302 d->udev = udev;
303 d->desc = desc;
304 d->owner = owner;
305
306 usb_set_intfdata(intf, d);
307
308 ret = dvb_usb_init(d, adapter_nums);
309 if (ret) {
310 info("%s error while loading driver (%d)", desc->name, ret);
311 goto error;
312 }
313
314 if (du)
315 *du = d;
316
317 info("%s successfully initialized and connected.", desc->name);
318 return 0;
319
320 error:
321 usb_set_intfdata(intf, NULL);
322 kfree(d);
323 return ret;
324}
325EXPORT_SYMBOL(dvb_usb_device_init);
326
327void dvb_usb_device_exit(struct usb_interface *intf)
328{
329 struct dvb_usb_device *d = usb_get_intfdata(intf);
330 const char *default_name = "generic DVB-USB module";
331 char name[40];
332
333 usb_set_intfdata(intf, NULL);
334 if (d != NULL && d->desc != NULL) {
335 strscpy(name, d->desc->name, sizeof(name));
336 dvb_usb_exit(d);
337 } else {
338 strscpy(name, default_name, sizeof(name));
339 }
340 info("%s successfully deinitialized and disconnected.", name);
341
342}
343EXPORT_SYMBOL(dvb_usb_device_exit);
344
345MODULE_VERSION("1.0");
346MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
347MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
348MODULE_LICENSE("GPL");
349
