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22#include "au0828.h"
23#include "au8522.h"
24
25#include <linux/module.h>
26#include <linux/slab.h>
27#include <linux/videodev2.h>
28#include <media/v4l2-common.h>
29#include <linux/mutex.h>
30
31
32#include <media/tuner.h>
33
34
35
36
37
38
39
40
41int au0828_debug;
42module_param_named(debug, au0828_debug, int, 0644);
43MODULE_PARM_DESC(debug,
44 "set debug bitmask: 1=general, 2=USB, 4=I2C, 8=bridge, 16=IR");
45
46static unsigned int disable_usb_speed_check;
47module_param(disable_usb_speed_check, int, 0444);
48MODULE_PARM_DESC(disable_usb_speed_check,
49 "override min bandwidth requirement of 480M bps");
50
51#define _AU0828_BULKPIPE 0x03
52#define _BULKPIPESIZE 0xffff
53
54static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
55 u16 index);
56static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
57 u16 index, unsigned char *cp, u16 size);
58
59
60#define CMD_REQUEST_IN 0x00
61#define CMD_REQUEST_OUT 0x01
62
63u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
64{
65 u8 result = 0;
66
67 recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, &result, 1);
68 dprintk(8, "%s(0x%04x) = 0x%02x\n", __func__, reg, result);
69
70 return result;
71}
72
73u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
74{
75 dprintk(8, "%s(0x%04x, 0x%02x)\n", __func__, reg, val);
76 return send_control_msg(dev, CMD_REQUEST_OUT, val, reg);
77}
78
79static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
80 u16 index)
81{
82 int status = -ENODEV;
83
84 if (dev->usbdev) {
85
86
87 status = usb_control_msg(dev->usbdev,
88 usb_sndctrlpipe(dev->usbdev, 0),
89 request,
90 USB_DIR_OUT | USB_TYPE_VENDOR |
91 USB_RECIP_DEVICE,
92 value, index, NULL, 0, 1000);
93
94 status = min(status, 0);
95
96 if (status < 0) {
97 pr_err("%s() Failed sending control message, error %d.\n",
98 __func__, status);
99 }
100
101 }
102
103 return status;
104}
105
106static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
107 u16 index, unsigned char *cp, u16 size)
108{
109 int status = -ENODEV;
110 mutex_lock(&dev->mutex);
111 if (dev->usbdev) {
112 status = usb_control_msg(dev->usbdev,
113 usb_rcvctrlpipe(dev->usbdev, 0),
114 request,
115 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
116 value, index,
117 dev->ctrlmsg, size, 1000);
118
119 status = min(status, 0);
120
121 if (status < 0) {
122 pr_err("%s() Failed receiving control message, error %d.\n",
123 __func__, status);
124 }
125
126
127
128 memcpy(cp, dev->ctrlmsg, size);
129 }
130 mutex_unlock(&dev->mutex);
131 return status;
132}
133
134static void au0828_unregister_media_device(struct au0828_dev *dev)
135{
136
137#ifdef CONFIG_MEDIA_CONTROLLER
138 if (dev->media_dev &&
139 media_devnode_is_registered(&dev->media_dev->devnode)) {
140
141 dev->media_dev->source_priv = NULL;
142 dev->media_dev->enable_source = NULL;
143 dev->media_dev->disable_source = NULL;
144
145 media_device_unregister(dev->media_dev);
146 media_device_cleanup(dev->media_dev);
147 kfree(dev->media_dev);
148 dev->media_dev = NULL;
149 }
150#endif
151}
152
153void au0828_usb_release(struct au0828_dev *dev)
154{
155 au0828_unregister_media_device(dev);
156
157
158 au0828_i2c_unregister(dev);
159
160 kfree(dev);
161}
162
163static void au0828_usb_disconnect(struct usb_interface *interface)
164{
165 struct au0828_dev *dev = usb_get_intfdata(interface);
166
167 dprintk(1, "%s()\n", __func__);
168
169
170
171
172
173
174
175 set_bit(DEV_DISCONNECTED, &dev->dev_state);
176
177 au0828_rc_unregister(dev);
178
179 au0828_dvb_unregister(dev);
180
181 usb_set_intfdata(interface, NULL);
182 mutex_lock(&dev->mutex);
183 dev->usbdev = NULL;
184 mutex_unlock(&dev->mutex);
185 if (au0828_analog_unregister(dev)) {
186
187
188
189
190 return;
191 }
192 au0828_usb_release(dev);
193}
194
195static int au0828_media_device_init(struct au0828_dev *dev,
196 struct usb_device *udev)
197{
198#ifdef CONFIG_MEDIA_CONTROLLER
199 struct media_device *mdev;
200
201 mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
202 if (!mdev)
203 return -ENOMEM;
204
205
206 if (!mdev->dev)
207 media_device_usb_init(mdev, udev, udev->product);
208
209 dev->media_dev = mdev;
210#endif
211 return 0;
212}
213
214#ifdef CONFIG_MEDIA_CONTROLLER
215static void au0828_media_graph_notify(struct media_entity *new,
216 void *notify_data)
217{
218 struct au0828_dev *dev = (struct au0828_dev *) notify_data;
219 int ret;
220 struct media_entity *entity, *mixer = NULL, *decoder = NULL;
221
222 if (!new) {
223
224
225
226
227
228 media_device_for_each_entity(entity, dev->media_dev) {
229 if (entity->function == MEDIA_ENT_F_AUDIO_MIXER)
230 mixer = entity;
231 else if (entity->function == MEDIA_ENT_F_ATV_DECODER)
232 decoder = entity;
233 }
234 goto create_link;
235 }
236
237 switch (new->function) {
238 case MEDIA_ENT_F_AUDIO_MIXER:
239 mixer = new;
240 if (dev->decoder)
241 decoder = dev->decoder;
242 break;
243 case MEDIA_ENT_F_ATV_DECODER:
244
245 media_device_for_each_entity(entity, dev->media_dev) {
246 if (entity->function == MEDIA_ENT_F_AUDIO_MIXER)
247 mixer = entity;
248 }
249 decoder = new;
250 break;
251 default:
252 break;
253 }
254
255create_link:
256 if (decoder && mixer) {
257 ret = media_create_pad_link(decoder,
258 DEMOD_PAD_AUDIO_OUT,
259 mixer, 0,
260 MEDIA_LNK_FL_ENABLED);
261 if (ret)
262 dev_err(&dev->usbdev->dev,
263 "Mixer Pad Link Create Error: %d\n", ret);
264 }
265}
266
267static int au0828_enable_source(struct media_entity *entity,
268 struct media_pipeline *pipe)
269{
270 struct media_entity *source, *find_source;
271 struct media_entity *sink;
272 struct media_link *link, *found_link = NULL;
273 int ret = 0;
274 struct media_device *mdev = entity->graph_obj.mdev;
275 struct au0828_dev *dev;
276
277 if (!mdev)
278 return -ENODEV;
279
280 mutex_lock(&mdev->graph_mutex);
281
282 dev = mdev->source_priv;
283
284
285
286
287
288
289
290
291
292
293
294
295 if (entity->function == MEDIA_ENT_F_DTV_DEMOD) {
296 sink = entity;
297 find_source = dev->tuner;
298 } else {
299
300 if (!dev->decoder) {
301 ret = -ENODEV;
302 goto end;
303 }
304
305 sink = dev->decoder;
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322 if (dev->input_type == AU0828_VMUX_TELEVISION)
323 find_source = dev->tuner;
324 else if (dev->input_type == AU0828_VMUX_SVIDEO ||
325 dev->input_type == AU0828_VMUX_COMPOSITE)
326 find_source = &dev->input_ent[dev->input_type];
327 else {
328
329 ret = 0;
330 goto end;
331 }
332 }
333
334
335 if (dev->active_link) {
336
337
338
339
340
341 if (dev->active_link->sink->entity == sink &&
342 dev->active_link->source->entity == find_source) {
343
344
345
346
347
348 if (dev->active_link_owner != entity &&
349 dev->active_link_owner->function ==
350 MEDIA_ENT_F_AUDIO_CAPTURE) {
351 pr_debug("ALSA has the tuner\n");
352 ret = -EBUSY;
353 goto end;
354 }
355 ret = 0;
356 goto end;
357 } else {
358 ret = -EBUSY;
359 goto end;
360 }
361 }
362
363 list_for_each_entry(link, &sink->links, list) {
364
365 if (link->sink->entity == sink &&
366 link->source->entity == find_source) {
367 found_link = link;
368 break;
369 }
370 }
371
372 if (!found_link) {
373 ret = -ENODEV;
374 goto end;
375 }
376
377
378 source = found_link->source->entity;
379 ret = __media_entity_setup_link(found_link, MEDIA_LNK_FL_ENABLED);
380 if (ret) {
381 pr_err("Activate tuner link %s->%s. Error %d\n",
382 source->name, sink->name, ret);
383 goto end;
384 }
385
386 ret = __media_entity_pipeline_start(entity, pipe);
387 if (ret) {
388 pr_err("Start Pipeline: %s->%s Error %d\n",
389 source->name, entity->name, ret);
390 ret = __media_entity_setup_link(found_link, 0);
391 pr_err("Deactivate link Error %d\n", ret);
392 goto end;
393 }
394
395
396
397
398
399 dev->active_link = found_link;
400 dev->active_link_owner = entity;
401 dev->active_source = source;
402 dev->active_sink = sink;
403
404 pr_debug("Enabled Source: %s->%s->%s Ret %d\n",
405 dev->active_source->name, dev->active_sink->name,
406 dev->active_link_owner->name, ret);
407end:
408 mutex_unlock(&mdev->graph_mutex);
409 pr_debug("au0828_enable_source() end %s %d %d\n",
410 entity->name, entity->function, ret);
411 return ret;
412}
413
414static void au0828_disable_source(struct media_entity *entity)
415{
416 int ret = 0;
417 struct media_device *mdev = entity->graph_obj.mdev;
418 struct au0828_dev *dev;
419
420 if (!mdev)
421 return;
422
423 mutex_lock(&mdev->graph_mutex);
424 dev = mdev->source_priv;
425
426 if (!dev->active_link) {
427 ret = -ENODEV;
428 goto end;
429 }
430
431
432 if (dev->active_link->sink->entity == dev->active_sink &&
433 dev->active_link->source->entity == dev->active_source) {
434
435
436
437
438 if (dev->active_link_owner != entity)
439 goto end;
440 __media_entity_pipeline_stop(entity);
441 ret = __media_entity_setup_link(dev->active_link, 0);
442 if (ret)
443 pr_err("Deactivate link Error %d\n", ret);
444
445 pr_debug("Disabled Source: %s->%s->%s Ret %d\n",
446 dev->active_source->name, dev->active_sink->name,
447 dev->active_link_owner->name, ret);
448
449 dev->active_link = NULL;
450 dev->active_link_owner = NULL;
451 dev->active_source = NULL;
452 dev->active_sink = NULL;
453 }
454
455end:
456 mutex_unlock(&mdev->graph_mutex);
457}
458#endif
459
460static int au0828_media_device_register(struct au0828_dev *dev,
461 struct usb_device *udev)
462{
463#ifdef CONFIG_MEDIA_CONTROLLER
464 int ret;
465 struct media_entity *entity, *demod = NULL;
466 struct media_link *link;
467
468 if (!dev->media_dev)
469 return 0;
470
471 if (!media_devnode_is_registered(&dev->media_dev->devnode)) {
472
473
474 ret = media_device_register(dev->media_dev);
475 if (ret) {
476 dev_err(&udev->dev,
477 "Media Device Register Error: %d\n", ret);
478 return ret;
479 }
480 } else {
481
482
483
484
485
486
487
488 au0828_media_graph_notify(NULL, (void *) dev);
489 }
490
491
492
493
494
495
496
497
498
499
500
501
502 media_device_for_each_entity(entity, dev->media_dev) {
503 switch (entity->function) {
504 case MEDIA_ENT_F_TUNER:
505 dev->tuner = entity;
506 break;
507 case MEDIA_ENT_F_ATV_DECODER:
508 dev->decoder = entity;
509 break;
510 case MEDIA_ENT_F_DTV_DEMOD:
511 demod = entity;
512 break;
513 }
514 }
515
516
517 if (dev->tuner) {
518 list_for_each_entry(link, &dev->tuner->links, list) {
519 if (demod && link->sink->entity == demod)
520 media_entity_setup_link(link, 0);
521 if (dev->decoder && link->sink->entity == dev->decoder)
522 media_entity_setup_link(link, 0);
523 }
524 }
525
526
527 dev->entity_notify.notify_data = (void *) dev;
528 dev->entity_notify.notify = (void *) au0828_media_graph_notify;
529 ret = media_device_register_entity_notify(dev->media_dev,
530 &dev->entity_notify);
531 if (ret) {
532 dev_err(&udev->dev,
533 "Media Device register entity_notify Error: %d\n",
534 ret);
535 return ret;
536 }
537
538 dev->media_dev->source_priv = (void *) dev;
539 dev->media_dev->enable_source = au0828_enable_source;
540 dev->media_dev->disable_source = au0828_disable_source;
541#endif
542 return 0;
543}
544
545static int au0828_usb_probe(struct usb_interface *interface,
546 const struct usb_device_id *id)
547{
548 int ifnum;
549 int retval = 0;
550
551 struct au0828_dev *dev;
552 struct usb_device *usbdev = interface_to_usbdev(interface);
553
554 ifnum = interface->altsetting->desc.bInterfaceNumber;
555
556 if (ifnum != 0)
557 return -ENODEV;
558
559 dprintk(1, "%s() vendor id 0x%x device id 0x%x ifnum:%d\n", __func__,
560 le16_to_cpu(usbdev->descriptor.idVendor),
561 le16_to_cpu(usbdev->descriptor.idProduct),
562 ifnum);
563
564
565
566
567
568
569 if (usbdev->speed != USB_SPEED_HIGH && disable_usb_speed_check == 0) {
570 pr_err("au0828: Device initialization failed.\n");
571 pr_err("au0828: Device must be connected to a high-speed USB 2.0 port.\n");
572 return -ENODEV;
573 }
574
575 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
576 if (dev == NULL) {
577 pr_err("%s() Unable to allocate memory\n", __func__);
578 return -ENOMEM;
579 }
580
581 mutex_init(&dev->lock);
582 mutex_lock(&dev->lock);
583 mutex_init(&dev->mutex);
584 mutex_init(&dev->dvb.lock);
585 dev->usbdev = usbdev;
586 dev->boardnr = id->driver_info;
587 dev->board = au0828_boards[dev->boardnr];
588
589
590 retval = au0828_media_device_init(dev, usbdev);
591 if (retval) {
592 pr_err("%s() au0828_media_device_init failed\n",
593 __func__);
594 mutex_unlock(&dev->lock);
595 kfree(dev);
596 return retval;
597 }
598
599 retval = au0828_v4l2_device_register(interface, dev);
600 if (retval) {
601 au0828_usb_v4l2_media_release(dev);
602 mutex_unlock(&dev->lock);
603 kfree(dev);
604 return retval;
605 }
606
607
608 au0828_write(dev, REG_600, 1 << 4);
609
610
611 au0828_gpio_setup(dev);
612
613
614 au0828_i2c_register(dev);
615
616
617 au0828_card_setup(dev);
618
619
620 retval = au0828_analog_register(dev, interface);
621 if (retval) {
622 pr_err("%s() au0282_dev_register failed to register on V4L2\n",
623 __func__);
624 goto done;
625 }
626
627
628 retval = au0828_dvb_register(dev);
629 if (retval)
630 pr_err("%s() au0282_dev_register failed\n",
631 __func__);
632
633
634 au0828_rc_register(dev);
635
636
637
638
639
640 usb_set_intfdata(interface, dev);
641
642 pr_info("Registered device AU0828 [%s]\n",
643 dev->board.name == NULL ? "Unset" : dev->board.name);
644
645 mutex_unlock(&dev->lock);
646
647 retval = au0828_media_device_register(dev, usbdev);
648
649done:
650 if (retval < 0)
651 au0828_usb_disconnect(interface);
652
653 return retval;
654}
655
656static int au0828_suspend(struct usb_interface *interface,
657 pm_message_t message)
658{
659 struct au0828_dev *dev = usb_get_intfdata(interface);
660
661 if (!dev)
662 return 0;
663
664 pr_info("Suspend\n");
665
666 au0828_rc_suspend(dev);
667 au0828_v4l2_suspend(dev);
668 au0828_dvb_suspend(dev);
669
670
671
672 return 0;
673}
674
675static int au0828_resume(struct usb_interface *interface)
676{
677 struct au0828_dev *dev = usb_get_intfdata(interface);
678 if (!dev)
679 return 0;
680
681 pr_info("Resume\n");
682
683
684 au0828_write(dev, REG_600, 1 << 4);
685
686
687 au0828_gpio_setup(dev);
688
689 au0828_rc_resume(dev);
690 au0828_v4l2_resume(dev);
691 au0828_dvb_resume(dev);
692
693
694
695 return 0;
696}
697
698static struct usb_driver au0828_usb_driver = {
699 .name = KBUILD_MODNAME,
700 .probe = au0828_usb_probe,
701 .disconnect = au0828_usb_disconnect,
702 .id_table = au0828_usb_id_table,
703 .suspend = au0828_suspend,
704 .resume = au0828_resume,
705 .reset_resume = au0828_resume,
706};
707
708static int __init au0828_init(void)
709{
710 int ret;
711
712 if (au0828_debug & 1)
713 pr_info("%s() Debugging is enabled\n", __func__);
714
715 if (au0828_debug & 2)
716 pr_info("%s() USB Debugging is enabled\n", __func__);
717
718 if (au0828_debug & 4)
719 pr_info("%s() I2C Debugging is enabled\n", __func__);
720
721 if (au0828_debug & 8)
722 pr_info("%s() Bridge Debugging is enabled\n",
723 __func__);
724
725 if (au0828_debug & 16)
726 pr_info("%s() IR Debugging is enabled\n",
727 __func__);
728
729 pr_info("au0828 driver loaded\n");
730
731 ret = usb_register(&au0828_usb_driver);
732 if (ret)
733 pr_err("usb_register failed, error = %d\n", ret);
734
735 return ret;
736}
737
738static void __exit au0828_exit(void)
739{
740 usb_deregister(&au0828_usb_driver);
741}
742
743module_init(au0828_init);
744module_exit(au0828_exit);
745
746MODULE_DESCRIPTION("Driver for Auvitek AU0828 based products");
747MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
748MODULE_LICENSE("GPL");
749MODULE_VERSION("0.0.3");
750