1 /*
2 * DVB USB framework
3 *
4 * Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@posteo.de>
5 * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 */
21
22 #include "dvb_usb_common.h"
23 #include <media/media-device.h>
24
25 static int dvb_usbv2_disable_rc_polling;
26 module_param_named(disable_rc_polling, dvb_usbv2_disable_rc_polling, int, 0644);
27 MODULE_PARM_DESC(disable_rc_polling,
28 "disable remote control polling (default: 0)");
29 static int dvb_usb_force_pid_filter_usage;
30 module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage,
31 int, 0444);
32 MODULE_PARM_DESC(force_pid_filter_usage,
33 "force all DVB USB devices to use a PID filter, if any (default: 0)");
34
dvb_usbv2_download_firmware(struct dvb_usb_device * d,const char * name)35 static int dvb_usbv2_download_firmware(struct dvb_usb_device *d,
36 const char *name)
37 {
38 int ret;
39 const struct firmware *fw;
40 dev_dbg(&d->udev->dev, "%s:\n", __func__);
41
42 if (!d->props->download_firmware) {
43 ret = -EINVAL;
44 goto err;
45 }
46
47 ret = request_firmware(&fw, name, &d->udev->dev);
48 if (ret < 0) {
49 dev_err(&d->udev->dev,
50 "%s: Did not find the firmware file '%s'. Please see linux/Documentation/dvb/ for more details on firmware-problems. Status %d\n",
51 KBUILD_MODNAME, name, ret);
52 goto err;
53 }
54
55 dev_info(&d->udev->dev, "%s: downloading firmware from file '%s'\n",
56 KBUILD_MODNAME, name);
57
58 ret = d->props->download_firmware(d, fw);
59 release_firmware(fw);
60 if (ret < 0)
61 goto err;
62
63 return ret;
64 err:
65 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
66 return ret;
67 }
68
dvb_usbv2_i2c_init(struct dvb_usb_device * d)69 static int dvb_usbv2_i2c_init(struct dvb_usb_device *d)
70 {
71 int ret;
72 dev_dbg(&d->udev->dev, "%s:\n", __func__);
73
74 if (!d->props->i2c_algo)
75 return 0;
76
77 strlcpy(d->i2c_adap.name, d->name, sizeof(d->i2c_adap.name));
78 d->i2c_adap.algo = d->props->i2c_algo;
79 d->i2c_adap.dev.parent = &d->udev->dev;
80 i2c_set_adapdata(&d->i2c_adap, d);
81
82 ret = i2c_add_adapter(&d->i2c_adap);
83 if (ret < 0) {
84 d->i2c_adap.algo = NULL;
85 goto err;
86 }
87
88 return 0;
89 err:
90 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
91 return ret;
92 }
93
dvb_usbv2_i2c_exit(struct dvb_usb_device * d)94 static int dvb_usbv2_i2c_exit(struct dvb_usb_device *d)
95 {
96 dev_dbg(&d->udev->dev, "%s:\n", __func__);
97
98 if (d->i2c_adap.algo)
99 i2c_del_adapter(&d->i2c_adap);
100
101 return 0;
102 }
103
104 #if IS_ENABLED(CONFIG_RC_CORE)
dvb_usb_read_remote_control(struct work_struct * work)105 static void dvb_usb_read_remote_control(struct work_struct *work)
106 {
107 struct dvb_usb_device *d = container_of(work,
108 struct dvb_usb_device, rc_query_work.work);
109 int ret;
110
111 /*
112 * When the parameter has been set to 1 via sysfs while the
113 * driver was running, or when bulk mode is enabled after IR init.
114 */
115 if (dvb_usbv2_disable_rc_polling || d->rc.bulk_mode) {
116 d->rc_polling_active = false;
117 return;
118 }
119
120 ret = d->rc.query(d);
121 if (ret < 0) {
122 dev_err(&d->udev->dev, "%s: rc.query() failed=%d\n",
123 KBUILD_MODNAME, ret);
124 d->rc_polling_active = false;
125 return; /* stop polling */
126 }
127
128 schedule_delayed_work(&d->rc_query_work,
129 msecs_to_jiffies(d->rc.interval));
130 }
131
dvb_usbv2_remote_init(struct dvb_usb_device * d)132 static int dvb_usbv2_remote_init(struct dvb_usb_device *d)
133 {
134 int ret;
135 struct rc_dev *dev;
136 dev_dbg(&d->udev->dev, "%s:\n", __func__);
137
138 if (dvb_usbv2_disable_rc_polling || !d->props->get_rc_config)
139 return 0;
140
141 d->rc.map_name = d->rc_map;
142 ret = d->props->get_rc_config(d, &d->rc);
143 if (ret < 0)
144 goto err;
145
146 /* disable rc when there is no keymap defined */
147 if (!d->rc.map_name)
148 return 0;
149
150 dev = rc_allocate_device(d->rc.driver_type);
151 if (!dev) {
152 ret = -ENOMEM;
153 goto err;
154 }
155
156 dev->dev.parent = &d->udev->dev;
157 dev->device_name = d->name;
158 usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys));
159 strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys));
160 dev->input_phys = d->rc_phys;
161 usb_to_input_id(d->udev, &dev->input_id);
162 dev->driver_name = d->props->driver_name;
163 dev->map_name = d->rc.map_name;
164 dev->allowed_protocols = d->rc.allowed_protos;
165 dev->change_protocol = d->rc.change_protocol;
166 dev->priv = d;
167
168 ret = rc_register_device(dev);
169 if (ret < 0) {
170 rc_free_device(dev);
171 goto err;
172 }
173
174 d->rc_dev = dev;
175
176 /* start polling if needed */
177 if (d->rc.query && !d->rc.bulk_mode) {
178 /* initialize a work queue for handling polling */
179 INIT_DELAYED_WORK(&d->rc_query_work,
180 dvb_usb_read_remote_control);
181 dev_info(&d->udev->dev,
182 "%s: schedule remote query interval to %d msecs\n",
183 KBUILD_MODNAME, d->rc.interval);
184 schedule_delayed_work(&d->rc_query_work,
185 msecs_to_jiffies(d->rc.interval));
186 d->rc_polling_active = true;
187 }
188
189 return 0;
190 err:
191 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
192 return ret;
193 }
194
dvb_usbv2_remote_exit(struct dvb_usb_device * d)195 static int dvb_usbv2_remote_exit(struct dvb_usb_device *d)
196 {
197 dev_dbg(&d->udev->dev, "%s:\n", __func__);
198
199 if (d->rc_dev) {
200 cancel_delayed_work_sync(&d->rc_query_work);
201 rc_unregister_device(d->rc_dev);
202 d->rc_dev = NULL;
203 }
204
205 return 0;
206 }
207 #else
208 #define dvb_usbv2_remote_init(args...) 0
209 #define dvb_usbv2_remote_exit(args...)
210 #endif
211
dvb_usb_data_complete(struct usb_data_stream * stream,u8 * buf,size_t len)212 static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buf,
213 size_t len)
214 {
215 struct dvb_usb_adapter *adap = stream->user_priv;
216 dvb_dmx_swfilter(&adap->demux, buf, len);
217 }
218
dvb_usb_data_complete_204(struct usb_data_stream * stream,u8 * buf,size_t len)219 static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buf,
220 size_t len)
221 {
222 struct dvb_usb_adapter *adap = stream->user_priv;
223 dvb_dmx_swfilter_204(&adap->demux, buf, len);
224 }
225
dvb_usb_data_complete_raw(struct usb_data_stream * stream,u8 * buf,size_t len)226 static void dvb_usb_data_complete_raw(struct usb_data_stream *stream, u8 *buf,
227 size_t len)
228 {
229 struct dvb_usb_adapter *adap = stream->user_priv;
230 dvb_dmx_swfilter_raw(&adap->demux, buf, len);
231 }
232
dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter * adap)233 static int dvb_usbv2_adapter_stream_init(struct dvb_usb_adapter *adap)
234 {
235 dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
236 adap->id);
237
238 adap->stream.udev = adap_to_d(adap)->udev;
239 adap->stream.user_priv = adap;
240 adap->stream.complete = dvb_usb_data_complete;
241
242 return usb_urb_initv2(&adap->stream, &adap->props->stream);
243 }
244
dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter * adap)245 static int dvb_usbv2_adapter_stream_exit(struct dvb_usb_adapter *adap)
246 {
247 dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
248 adap->id);
249
250 return usb_urb_exitv2(&adap->stream);
251 }
252
dvb_usb_start_feed(struct dvb_demux_feed * dvbdmxfeed)253 static int dvb_usb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
254 {
255 struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
256 struct dvb_usb_device *d = adap_to_d(adap);
257 int ret = 0;
258 struct usb_data_stream_properties stream_props;
259 dev_dbg(&d->udev->dev,
260 "%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
261 __func__, adap->id, adap->active_fe, dvbdmxfeed->type,
262 adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
263 dvbdmxfeed->pid, dvbdmxfeed->index);
264
265 /* wait init is done */
266 wait_on_bit(&adap->state_bits, ADAP_INIT, TASK_UNINTERRUPTIBLE);
267
268 if (adap->active_fe == -1)
269 return -EINVAL;
270
271 /* skip feed setup if we are already feeding */
272 if (adap->feed_count++ > 0)
273 goto skip_feed_start;
274
275 /* set 'streaming' status bit */
276 set_bit(ADAP_STREAMING, &adap->state_bits);
277
278 /* resolve input and output streaming parameters */
279 if (d->props->get_stream_config) {
280 memcpy(&stream_props, &adap->props->stream,
281 sizeof(struct usb_data_stream_properties));
282 ret = d->props->get_stream_config(adap->fe[adap->active_fe],
283 &adap->ts_type, &stream_props);
284 if (ret)
285 dev_err(&d->udev->dev,
286 "%s: get_stream_config() failed=%d\n",
287 KBUILD_MODNAME, ret);
288 } else {
289 stream_props = adap->props->stream;
290 }
291
292 switch (adap->ts_type) {
293 case DVB_USB_FE_TS_TYPE_204:
294 adap->stream.complete = dvb_usb_data_complete_204;
295 break;
296 case DVB_USB_FE_TS_TYPE_RAW:
297 adap->stream.complete = dvb_usb_data_complete_raw;
298 break;
299 case DVB_USB_FE_TS_TYPE_188:
300 default:
301 adap->stream.complete = dvb_usb_data_complete;
302 break;
303 }
304
305 /* submit USB streaming packets */
306 usb_urb_submitv2(&adap->stream, &stream_props);
307
308 /* enable HW PID filter */
309 if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
310 ret = adap->props->pid_filter_ctrl(adap, 1);
311 if (ret)
312 dev_err(&d->udev->dev,
313 "%s: pid_filter_ctrl() failed=%d\n",
314 KBUILD_MODNAME, ret);
315 }
316
317 /* ask device to start streaming */
318 if (d->props->streaming_ctrl) {
319 ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 1);
320 if (ret)
321 dev_err(&d->udev->dev,
322 "%s: streaming_ctrl() failed=%d\n",
323 KBUILD_MODNAME, ret);
324 }
325 skip_feed_start:
326
327 /* add PID to device HW PID filter */
328 if (adap->pid_filtering && adap->props->pid_filter) {
329 ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
330 dvbdmxfeed->pid, 1);
331 if (ret)
332 dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
333 KBUILD_MODNAME, ret);
334 }
335
336 if (ret)
337 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
338 return ret;
339 }
340
dvb_usb_stop_feed(struct dvb_demux_feed * dvbdmxfeed)341 static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
342 {
343 struct dvb_usb_adapter *adap = dvbdmxfeed->demux->priv;
344 struct dvb_usb_device *d = adap_to_d(adap);
345 int ret = 0;
346 dev_dbg(&d->udev->dev,
347 "%s: adap=%d active_fe=%d feed_type=%d setting pid [%s]: %04x (%04d) at index %d\n",
348 __func__, adap->id, adap->active_fe, dvbdmxfeed->type,
349 adap->pid_filtering ? "yes" : "no", dvbdmxfeed->pid,
350 dvbdmxfeed->pid, dvbdmxfeed->index);
351
352 if (adap->active_fe == -1)
353 return -EINVAL;
354
355 /* remove PID from device HW PID filter */
356 if (adap->pid_filtering && adap->props->pid_filter) {
357 ret = adap->props->pid_filter(adap, dvbdmxfeed->index,
358 dvbdmxfeed->pid, 0);
359 if (ret)
360 dev_err(&d->udev->dev, "%s: pid_filter() failed=%d\n",
361 KBUILD_MODNAME, ret);
362 }
363
364 /* we cannot stop streaming until last PID is removed */
365 if (--adap->feed_count > 0)
366 goto skip_feed_stop;
367
368 /* ask device to stop streaming */
369 if (d->props->streaming_ctrl) {
370 ret = d->props->streaming_ctrl(adap->fe[adap->active_fe], 0);
371 if (ret)
372 dev_err(&d->udev->dev,
373 "%s: streaming_ctrl() failed=%d\n",
374 KBUILD_MODNAME, ret);
375 }
376
377 /* disable HW PID filter */
378 if (adap->pid_filtering && adap->props->pid_filter_ctrl) {
379 ret = adap->props->pid_filter_ctrl(adap, 0);
380 if (ret)
381 dev_err(&d->udev->dev,
382 "%s: pid_filter_ctrl() failed=%d\n",
383 KBUILD_MODNAME, ret);
384 }
385
386 /* kill USB streaming packets */
387 usb_urb_killv2(&adap->stream);
388
389 /* clear 'streaming' status bit */
390 clear_bit(ADAP_STREAMING, &adap->state_bits);
391 smp_mb__after_atomic();
392 wake_up_bit(&adap->state_bits, ADAP_STREAMING);
393 skip_feed_stop:
394
395 if (ret)
396 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
397 return ret;
398 }
399
dvb_usbv2_media_device_init(struct dvb_usb_adapter * adap)400 static int dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap)
401 {
402 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
403 struct media_device *mdev;
404 struct dvb_usb_device *d = adap_to_d(adap);
405 struct usb_device *udev = d->udev;
406
407 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
408 if (!mdev)
409 return -ENOMEM;
410
411 media_device_usb_init(mdev, udev, d->name);
412
413 dvb_register_media_controller(&adap->dvb_adap, mdev);
414
415 dev_info(&d->udev->dev, "media controller created\n");
416 #endif
417 return 0;
418 }
419
dvb_usbv2_media_device_register(struct dvb_usb_adapter * adap)420 static int dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
421 {
422 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
423 return media_device_register(adap->dvb_adap.mdev);
424 #else
425 return 0;
426 #endif
427 }
428
dvb_usbv2_media_device_unregister(struct dvb_usb_adapter * adap)429 static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap)
430 {
431 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
432
433 if (!adap->dvb_adap.mdev)
434 return;
435
436 media_device_unregister(adap->dvb_adap.mdev);
437 media_device_cleanup(adap->dvb_adap.mdev);
438 kfree(adap->dvb_adap.mdev);
439 adap->dvb_adap.mdev = NULL;
440
441 #endif
442 }
443
dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter * adap)444 static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
445 {
446 int ret;
447 struct dvb_usb_device *d = adap_to_d(adap);
448
449 dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
450
451 ret = dvb_register_adapter(&adap->dvb_adap, d->name, d->props->owner,
452 &d->udev->dev, d->props->adapter_nr);
453 if (ret < 0) {
454 dev_dbg(&d->udev->dev, "%s: dvb_register_adapter() failed=%d\n",
455 __func__, ret);
456 goto err_dvb_register_adapter;
457 }
458
459 adap->dvb_adap.priv = adap;
460
461 ret = dvb_usbv2_media_device_init(adap);
462 if (ret < 0) {
463 dev_dbg(&d->udev->dev, "%s: dvb_usbv2_media_device_init() failed=%d\n",
464 __func__, ret);
465 goto err_dvb_register_mc;
466 }
467
468 if (d->props->read_mac_address) {
469 ret = d->props->read_mac_address(adap,
470 adap->dvb_adap.proposed_mac);
471 if (ret < 0)
472 goto err_dvb_dmx_init;
473
474 dev_info(&d->udev->dev, "%s: MAC address: %pM\n",
475 KBUILD_MODNAME, adap->dvb_adap.proposed_mac);
476 }
477
478 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
479 adap->demux.priv = adap;
480 adap->demux.filternum = 0;
481 adap->demux.filternum = adap->max_feed_count;
482 adap->demux.feednum = adap->demux.filternum;
483 adap->demux.start_feed = dvb_usb_start_feed;
484 adap->demux.stop_feed = dvb_usb_stop_feed;
485 adap->demux.write_to_decoder = NULL;
486 ret = dvb_dmx_init(&adap->demux);
487 if (ret < 0) {
488 dev_err(&d->udev->dev, "%s: dvb_dmx_init() failed=%d\n",
489 KBUILD_MODNAME, ret);
490 goto err_dvb_dmx_init;
491 }
492
493 adap->dmxdev.filternum = adap->demux.filternum;
494 adap->dmxdev.demux = &adap->demux.dmx;
495 adap->dmxdev.capabilities = 0;
496 ret = dvb_dmxdev_init(&adap->dmxdev, &adap->dvb_adap);
497 if (ret < 0) {
498 dev_err(&d->udev->dev, "%s: dvb_dmxdev_init() failed=%d\n",
499 KBUILD_MODNAME, ret);
500 goto err_dvb_dmxdev_init;
501 }
502
503 ret = dvb_net_init(&adap->dvb_adap, &adap->dvb_net, &adap->demux.dmx);
504 if (ret < 0) {
505 dev_err(&d->udev->dev, "%s: dvb_net_init() failed=%d\n",
506 KBUILD_MODNAME, ret);
507 goto err_dvb_net_init;
508 }
509
510 return 0;
511 err_dvb_net_init:
512 dvb_dmxdev_release(&adap->dmxdev);
513 err_dvb_dmxdev_init:
514 dvb_dmx_release(&adap->demux);
515 err_dvb_dmx_init:
516 dvb_usbv2_media_device_unregister(adap);
517 err_dvb_register_mc:
518 dvb_unregister_adapter(&adap->dvb_adap);
519 err_dvb_register_adapter:
520 adap->dvb_adap.priv = NULL;
521 return ret;
522 }
523
dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter * adap)524 static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
525 {
526 dev_dbg(&adap_to_d(adap)->udev->dev, "%s: adap=%d\n", __func__,
527 adap->id);
528
529 if (adap->dvb_adap.priv) {
530 dvb_net_release(&adap->dvb_net);
531 adap->demux.dmx.close(&adap->demux.dmx);
532 dvb_dmxdev_release(&adap->dmxdev);
533 dvb_dmx_release(&adap->demux);
534 dvb_unregister_adapter(&adap->dvb_adap);
535 }
536
537 return 0;
538 }
539
dvb_usbv2_device_power_ctrl(struct dvb_usb_device * d,int onoff)540 static int dvb_usbv2_device_power_ctrl(struct dvb_usb_device *d, int onoff)
541 {
542 int ret;
543
544 if (onoff)
545 d->powered++;
546 else
547 d->powered--;
548
549 if (d->powered == 0 || (onoff && d->powered == 1)) {
550 /* when switching from 1 to 0 or from 0 to 1 */
551 dev_dbg(&d->udev->dev, "%s: power=%d\n", __func__, onoff);
552 if (d->props->power_ctrl) {
553 ret = d->props->power_ctrl(d, onoff);
554 if (ret < 0)
555 goto err;
556 }
557 }
558
559 return 0;
560 err:
561 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
562 return ret;
563 }
564
dvb_usb_fe_init(struct dvb_frontend * fe)565 static int dvb_usb_fe_init(struct dvb_frontend *fe)
566 {
567 int ret;
568 struct dvb_usb_adapter *adap = fe->dvb->priv;
569 struct dvb_usb_device *d = adap_to_d(adap);
570 dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
571 fe->id);
572
573 if (!adap->suspend_resume_active) {
574 adap->active_fe = fe->id;
575 set_bit(ADAP_INIT, &adap->state_bits);
576 }
577
578 ret = dvb_usbv2_device_power_ctrl(d, 1);
579 if (ret < 0)
580 goto err;
581
582 if (d->props->frontend_ctrl) {
583 ret = d->props->frontend_ctrl(fe, 1);
584 if (ret < 0)
585 goto err;
586 }
587
588 if (adap->fe_init[fe->id]) {
589 ret = adap->fe_init[fe->id](fe);
590 if (ret < 0)
591 goto err;
592 }
593 err:
594 if (!adap->suspend_resume_active) {
595 clear_bit(ADAP_INIT, &adap->state_bits);
596 smp_mb__after_atomic();
597 wake_up_bit(&adap->state_bits, ADAP_INIT);
598 }
599
600 dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
601 return ret;
602 }
603
dvb_usb_fe_sleep(struct dvb_frontend * fe)604 static int dvb_usb_fe_sleep(struct dvb_frontend *fe)
605 {
606 int ret;
607 struct dvb_usb_adapter *adap = fe->dvb->priv;
608 struct dvb_usb_device *d = adap_to_d(adap);
609 dev_dbg(&d->udev->dev, "%s: adap=%d fe=%d\n", __func__, adap->id,
610 fe->id);
611
612 if (!adap->suspend_resume_active) {
613 set_bit(ADAP_SLEEP, &adap->state_bits);
614 wait_on_bit(&adap->state_bits, ADAP_STREAMING,
615 TASK_UNINTERRUPTIBLE);
616 }
617
618 if (adap->fe_sleep[fe->id]) {
619 ret = adap->fe_sleep[fe->id](fe);
620 if (ret < 0)
621 goto err;
622 }
623
624 if (d->props->frontend_ctrl) {
625 ret = d->props->frontend_ctrl(fe, 0);
626 if (ret < 0)
627 goto err;
628 }
629
630 ret = dvb_usbv2_device_power_ctrl(d, 0);
631 if (ret < 0)
632 goto err;
633 err:
634 if (!adap->suspend_resume_active) {
635 adap->active_fe = -1;
636 clear_bit(ADAP_SLEEP, &adap->state_bits);
637 smp_mb__after_atomic();
638 wake_up_bit(&adap->state_bits, ADAP_SLEEP);
639 }
640
641 dev_dbg(&d->udev->dev, "%s: ret=%d\n", __func__, ret);
642 return ret;
643 }
644
dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter * adap)645 static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap)
646 {
647 int ret, i, count_registered = 0;
648 struct dvb_usb_device *d = adap_to_d(adap);
649 dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
650
651 memset(adap->fe, 0, sizeof(adap->fe));
652 adap->active_fe = -1;
653
654 if (d->props->frontend_attach) {
655 ret = d->props->frontend_attach(adap);
656 if (ret < 0) {
657 dev_dbg(&d->udev->dev,
658 "%s: frontend_attach() failed=%d\n",
659 __func__, ret);
660 goto err_dvb_frontend_detach;
661 }
662 } else {
663 dev_dbg(&d->udev->dev, "%s: frontend_attach() do not exists\n",
664 __func__);
665 ret = 0;
666 goto err;
667 }
668
669 for (i = 0; i < MAX_NO_OF_FE_PER_ADAP && adap->fe[i]; i++) {
670 adap->fe[i]->id = i;
671 /* re-assign sleep and wakeup functions */
672 adap->fe_init[i] = adap->fe[i]->ops.init;
673 adap->fe[i]->ops.init = dvb_usb_fe_init;
674 adap->fe_sleep[i] = adap->fe[i]->ops.sleep;
675 adap->fe[i]->ops.sleep = dvb_usb_fe_sleep;
676
677 ret = dvb_register_frontend(&adap->dvb_adap, adap->fe[i]);
678 if (ret < 0) {
679 dev_err(&d->udev->dev,
680 "%s: frontend%d registration failed\n",
681 KBUILD_MODNAME, i);
682 goto err_dvb_unregister_frontend;
683 }
684
685 count_registered++;
686 }
687
688 if (d->props->tuner_attach) {
689 ret = d->props->tuner_attach(adap);
690 if (ret < 0) {
691 dev_dbg(&d->udev->dev, "%s: tuner_attach() failed=%d\n",
692 __func__, ret);
693 goto err_dvb_unregister_frontend;
694 }
695 }
696
697 ret = dvb_create_media_graph(&adap->dvb_adap, true);
698 if (ret < 0)
699 goto err_dvb_unregister_frontend;
700
701 ret = dvb_usbv2_media_device_register(adap);
702
703 return ret;
704
705 err_dvb_unregister_frontend:
706 for (i = count_registered - 1; i >= 0; i--)
707 dvb_unregister_frontend(adap->fe[i]);
708
709 err_dvb_frontend_detach:
710 for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
711 if (adap->fe[i]) {
712 dvb_frontend_detach(adap->fe[i]);
713 adap->fe[i] = NULL;
714 }
715 }
716
717 err:
718 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
719 return ret;
720 }
721
dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter * adap)722 static int dvb_usbv2_adapter_frontend_exit(struct dvb_usb_adapter *adap)
723 {
724 int ret, i;
725 struct dvb_usb_device *d = adap_to_d(adap);
726
727 dev_dbg(&d->udev->dev, "%s: adap=%d\n", __func__, adap->id);
728
729 for (i = MAX_NO_OF_FE_PER_ADAP - 1; i >= 0; i--) {
730 if (adap->fe[i]) {
731 dvb_unregister_frontend(adap->fe[i]);
732 dvb_frontend_detach(adap->fe[i]);
733 }
734 }
735
736 if (d->props->tuner_detach) {
737 ret = d->props->tuner_detach(adap);
738 if (ret < 0) {
739 dev_dbg(&d->udev->dev, "%s: tuner_detach() failed=%d\n",
740 __func__, ret);
741 }
742 }
743
744 if (d->props->frontend_detach) {
745 ret = d->props->frontend_detach(adap);
746 if (ret < 0) {
747 dev_dbg(&d->udev->dev,
748 "%s: frontend_detach() failed=%d\n",
749 __func__, ret);
750 }
751 }
752
753 return 0;
754 }
755
dvb_usbv2_adapter_init(struct dvb_usb_device * d)756 static int dvb_usbv2_adapter_init(struct dvb_usb_device *d)
757 {
758 struct dvb_usb_adapter *adap;
759 int ret, i, adapter_count;
760
761 /* resolve adapter count */
762 adapter_count = d->props->num_adapters;
763 if (d->props->get_adapter_count) {
764 ret = d->props->get_adapter_count(d);
765 if (ret < 0)
766 goto err;
767
768 adapter_count = ret;
769 }
770
771 for (i = 0; i < adapter_count; i++) {
772 adap = &d->adapter[i];
773 adap->id = i;
774 adap->props = &d->props->adapter[i];
775
776 /* speed - when running at FULL speed we need a HW PID filter */
777 if (d->udev->speed == USB_SPEED_FULL &&
778 !(adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
779 dev_err(&d->udev->dev,
780 "%s: this USB2.0 device cannot be run on a USB1.1 port (it lacks a hardware PID filter)\n",
781 KBUILD_MODNAME);
782 ret = -ENODEV;
783 goto err;
784 } else if ((d->udev->speed == USB_SPEED_FULL &&
785 adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
786 (adap->props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
787 dev_info(&d->udev->dev,
788 "%s: will use the device's hardware PID filter (table count: %d)\n",
789 KBUILD_MODNAME,
790 adap->props->pid_filter_count);
791 adap->pid_filtering = 1;
792 adap->max_feed_count = adap->props->pid_filter_count;
793 } else {
794 dev_info(&d->udev->dev,
795 "%s: will pass the complete MPEG2 transport stream to the software demuxer\n",
796 KBUILD_MODNAME);
797 adap->pid_filtering = 0;
798 adap->max_feed_count = 255;
799 }
800
801 if (!adap->pid_filtering && dvb_usb_force_pid_filter_usage &&
802 adap->props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
803 dev_info(&d->udev->dev,
804 "%s: PID filter enabled by module option\n",
805 KBUILD_MODNAME);
806 adap->pid_filtering = 1;
807 adap->max_feed_count = adap->props->pid_filter_count;
808 }
809
810 ret = dvb_usbv2_adapter_stream_init(adap);
811 if (ret)
812 goto err;
813
814 ret = dvb_usbv2_adapter_dvb_init(adap);
815 if (ret)
816 goto err;
817
818 ret = dvb_usbv2_adapter_frontend_init(adap);
819 if (ret)
820 goto err;
821
822 /* use exclusive FE lock if there is multiple shared FEs */
823 if (adap->fe[1])
824 adap->dvb_adap.mfe_shared = 1;
825 }
826
827 return 0;
828 err:
829 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
830 return ret;
831 }
832
dvb_usbv2_adapter_exit(struct dvb_usb_device * d)833 static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
834 {
835 int i;
836 dev_dbg(&d->udev->dev, "%s:\n", __func__);
837
838 for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
839 if (d->adapter[i].props) {
840 dvb_usbv2_adapter_dvb_exit(&d->adapter[i]);
841 dvb_usbv2_adapter_stream_exit(&d->adapter[i]);
842 dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
843 dvb_usbv2_media_device_unregister(&d->adapter[i]);
844 }
845 }
846
847 return 0;
848 }
849
850 /* general initialization functions */
dvb_usbv2_exit(struct dvb_usb_device * d)851 static int dvb_usbv2_exit(struct dvb_usb_device *d)
852 {
853 dev_dbg(&d->udev->dev, "%s:\n", __func__);
854
855 dvb_usbv2_remote_exit(d);
856 dvb_usbv2_adapter_exit(d);
857 dvb_usbv2_i2c_exit(d);
858 kfree(d->priv);
859 kfree(d);
860
861 return 0;
862 }
863
dvb_usbv2_init(struct dvb_usb_device * d)864 static int dvb_usbv2_init(struct dvb_usb_device *d)
865 {
866 int ret;
867 dev_dbg(&d->udev->dev, "%s:\n", __func__);
868
869 dvb_usbv2_device_power_ctrl(d, 1);
870
871 if (d->props->read_config) {
872 ret = d->props->read_config(d);
873 if (ret < 0)
874 goto err;
875 }
876
877 ret = dvb_usbv2_i2c_init(d);
878 if (ret < 0)
879 goto err;
880
881 ret = dvb_usbv2_adapter_init(d);
882 if (ret < 0)
883 goto err;
884
885 if (d->props->init) {
886 ret = d->props->init(d);
887 if (ret < 0)
888 goto err;
889 }
890
891 ret = dvb_usbv2_remote_init(d);
892 if (ret < 0)
893 goto err;
894
895 dvb_usbv2_device_power_ctrl(d, 0);
896
897 return 0;
898 err:
899 dvb_usbv2_device_power_ctrl(d, 0);
900 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
901 return ret;
902 }
903
dvb_usbv2_probe(struct usb_interface * intf,const struct usb_device_id * id)904 int dvb_usbv2_probe(struct usb_interface *intf,
905 const struct usb_device_id *id)
906 {
907 int ret;
908 struct dvb_usb_device *d;
909 struct usb_device *udev = interface_to_usbdev(intf);
910 struct dvb_usb_driver_info *driver_info =
911 (struct dvb_usb_driver_info *) id->driver_info;
912
913 dev_dbg(&udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
914 intf->cur_altsetting->desc.bInterfaceNumber);
915
916 if (!id->driver_info) {
917 dev_err(&udev->dev, "%s: driver_info failed\n", KBUILD_MODNAME);
918 ret = -ENODEV;
919 goto err;
920 }
921
922 d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
923 if (!d) {
924 dev_err(&udev->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
925 ret = -ENOMEM;
926 goto err;
927 }
928
929 d->intf = intf;
930 d->name = driver_info->name;
931 d->rc_map = driver_info->rc_map;
932 d->udev = udev;
933 d->props = driver_info->props;
934
935 if (intf->cur_altsetting->desc.bInterfaceNumber !=
936 d->props->bInterfaceNumber) {
937 ret = -ENODEV;
938 goto err_free_all;
939 }
940
941 mutex_init(&d->usb_mutex);
942 mutex_init(&d->i2c_mutex);
943
944 if (d->props->size_of_priv) {
945 d->priv = kzalloc(d->props->size_of_priv, GFP_KERNEL);
946 if (!d->priv) {
947 dev_err(&d->udev->dev, "%s: kzalloc() failed\n",
948 KBUILD_MODNAME);
949 ret = -ENOMEM;
950 goto err_free_all;
951 }
952 }
953
954 if (d->props->identify_state) {
955 const char *name = NULL;
956 ret = d->props->identify_state(d, &name);
957 if (ret == 0) {
958 ;
959 } else if (ret == COLD) {
960 dev_info(&d->udev->dev,
961 "%s: found a '%s' in cold state\n",
962 KBUILD_MODNAME, d->name);
963
964 if (!name)
965 name = d->props->firmware;
966
967 ret = dvb_usbv2_download_firmware(d, name);
968 if (ret == 0) {
969 /* device is warm, continue initialization */
970 ;
971 } else if (ret == RECONNECTS_USB) {
972 /*
973 * USB core will call disconnect() and then
974 * probe() as device reconnects itself from the
975 * USB bus. disconnect() will release all driver
976 * resources and probe() is called for 'new'
977 * device. As 'new' device is warm we should
978 * never go here again.
979 */
980 goto exit;
981 } else {
982 goto err_free_all;
983 }
984 } else {
985 goto err_free_all;
986 }
987 }
988
989 dev_info(&d->udev->dev, "%s: found a '%s' in warm state\n",
990 KBUILD_MODNAME, d->name);
991
992 ret = dvb_usbv2_init(d);
993 if (ret < 0)
994 goto err_free_all;
995
996 dev_info(&d->udev->dev,
997 "%s: '%s' successfully initialized and connected\n",
998 KBUILD_MODNAME, d->name);
999 exit:
1000 usb_set_intfdata(intf, d);
1001
1002 return 0;
1003 err_free_all:
1004 dvb_usbv2_exit(d);
1005 err:
1006 dev_dbg(&udev->dev, "%s: failed=%d\n", __func__, ret);
1007 return ret;
1008 }
1009 EXPORT_SYMBOL(dvb_usbv2_probe);
1010
dvb_usbv2_disconnect(struct usb_interface * intf)1011 void dvb_usbv2_disconnect(struct usb_interface *intf)
1012 {
1013 struct dvb_usb_device *d = usb_get_intfdata(intf);
1014 const char *devname = kstrdup(dev_name(&d->udev->dev), GFP_KERNEL);
1015 const char *drvname = d->name;
1016
1017 dev_dbg(&d->udev->dev, "%s: bInterfaceNumber=%d\n", __func__,
1018 intf->cur_altsetting->desc.bInterfaceNumber);
1019
1020 if (d->props->exit)
1021 d->props->exit(d);
1022
1023 dvb_usbv2_exit(d);
1024
1025 pr_info("%s: '%s:%s' successfully deinitialized and disconnected\n",
1026 KBUILD_MODNAME, drvname, devname);
1027 kfree(devname);
1028 }
1029 EXPORT_SYMBOL(dvb_usbv2_disconnect);
1030
dvb_usbv2_suspend(struct usb_interface * intf,pm_message_t msg)1031 int dvb_usbv2_suspend(struct usb_interface *intf, pm_message_t msg)
1032 {
1033 struct dvb_usb_device *d = usb_get_intfdata(intf);
1034 int ret = 0, i, active_fe;
1035 struct dvb_frontend *fe;
1036 dev_dbg(&d->udev->dev, "%s:\n", __func__);
1037
1038 /* stop remote controller poll */
1039 if (d->rc_polling_active)
1040 cancel_delayed_work_sync(&d->rc_query_work);
1041
1042 for (i = MAX_NO_OF_ADAPTER_PER_DEVICE - 1; i >= 0; i--) {
1043 active_fe = d->adapter[i].active_fe;
1044 if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
1045 fe = d->adapter[i].fe[active_fe];
1046 d->adapter[i].suspend_resume_active = true;
1047
1048 if (d->props->streaming_ctrl)
1049 d->props->streaming_ctrl(fe, 0);
1050
1051 /* stop usb streaming */
1052 usb_urb_killv2(&d->adapter[i].stream);
1053
1054 ret = dvb_frontend_suspend(fe);
1055 }
1056 }
1057
1058 return ret;
1059 }
1060 EXPORT_SYMBOL(dvb_usbv2_suspend);
1061
dvb_usbv2_resume_common(struct dvb_usb_device * d)1062 static int dvb_usbv2_resume_common(struct dvb_usb_device *d)
1063 {
1064 int ret = 0, i, active_fe;
1065 struct dvb_frontend *fe;
1066 dev_dbg(&d->udev->dev, "%s:\n", __func__);
1067
1068 for (i = 0; i < MAX_NO_OF_ADAPTER_PER_DEVICE; i++) {
1069 active_fe = d->adapter[i].active_fe;
1070 if (d->adapter[i].dvb_adap.priv && active_fe != -1) {
1071 fe = d->adapter[i].fe[active_fe];
1072
1073 ret = dvb_frontend_resume(fe);
1074
1075 /* resume usb streaming */
1076 usb_urb_submitv2(&d->adapter[i].stream, NULL);
1077
1078 if (d->props->streaming_ctrl)
1079 d->props->streaming_ctrl(fe, 1);
1080
1081 d->adapter[i].suspend_resume_active = false;
1082 }
1083 }
1084
1085 /* start remote controller poll */
1086 if (d->rc_polling_active)
1087 schedule_delayed_work(&d->rc_query_work,
1088 msecs_to_jiffies(d->rc.interval));
1089
1090 return ret;
1091 }
1092
dvb_usbv2_resume(struct usb_interface * intf)1093 int dvb_usbv2_resume(struct usb_interface *intf)
1094 {
1095 struct dvb_usb_device *d = usb_get_intfdata(intf);
1096 dev_dbg(&d->udev->dev, "%s:\n", __func__);
1097
1098 return dvb_usbv2_resume_common(d);
1099 }
1100 EXPORT_SYMBOL(dvb_usbv2_resume);
1101
dvb_usbv2_reset_resume(struct usb_interface * intf)1102 int dvb_usbv2_reset_resume(struct usb_interface *intf)
1103 {
1104 struct dvb_usb_device *d = usb_get_intfdata(intf);
1105 int ret;
1106 dev_dbg(&d->udev->dev, "%s:\n", __func__);
1107
1108 dvb_usbv2_device_power_ctrl(d, 1);
1109
1110 if (d->props->init)
1111 d->props->init(d);
1112
1113 ret = dvb_usbv2_resume_common(d);
1114
1115 dvb_usbv2_device_power_ctrl(d, 0);
1116
1117 return ret;
1118 }
1119 EXPORT_SYMBOL(dvb_usbv2_reset_resume);
1120
1121 MODULE_VERSION("2.0");
1122 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
1123 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1124 MODULE_DESCRIPTION("DVB USB common");
1125 MODULE_LICENSE("GPL");
1126