efbf210147c73a289b443cc938c6d2c32798b436
[sfrench/cifs-2.6.git] / drivers / media / usb / au0828 / au0828-video.c
1 /*
2  * Auvitek AU0828 USB Bridge (Analog video support)
3  *
4  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
5  * Copyright (C) 2005-2008 Auvitek International, Ltd.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * As published by the Free Software Foundation; either version 2
10  * of the License, or (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
18 /* Developer Notes:
19  *
20  * The hardware scaler supported is unimplemented
21  * AC97 audio support is unimplemented (only i2s audio mode)
22  *
23  */
24
25 #include "au0828.h"
26 #include "au8522.h"
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/init.h>
31 #include <linux/device.h>
32 #include <media/v4l2-common.h>
33 #include <media/v4l2-mc.h>
34 #include <media/v4l2-ioctl.h>
35 #include <media/v4l2-event.h>
36 #include <media/tuner.h>
37 #include "au0828-reg.h"
38
39 static DEFINE_MUTEX(au0828_sysfs_lock);
40
41 /* ------------------------------------------------------------------
42         Videobuf operations
43    ------------------------------------------------------------------*/
44
45 static unsigned int isoc_debug;
46 module_param(isoc_debug, int, 0644);
47 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
48
49 #define au0828_isocdbg(fmt, arg...) \
50 do {\
51         if (isoc_debug) { \
52                 pr_info("au0828 %s :"fmt, \
53                        __func__ , ##arg);          \
54         } \
55   } while (0)
56
57 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
58 {
59         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
60                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
61 }
62
63 static inline void print_err_status(struct au0828_dev *dev,
64                                     int packet, int status)
65 {
66         char *errmsg = "Unknown";
67
68         switch (status) {
69         case -ENOENT:
70                 errmsg = "unlinked synchronously";
71                 break;
72         case -ECONNRESET:
73                 errmsg = "unlinked asynchronously";
74                 break;
75         case -ENOSR:
76                 errmsg = "Buffer error (overrun)";
77                 break;
78         case -EPIPE:
79                 errmsg = "Stalled (device not responding)";
80                 break;
81         case -EOVERFLOW:
82                 errmsg = "Babble (bad cable?)";
83                 break;
84         case -EPROTO:
85                 errmsg = "Bit-stuff error (bad cable?)";
86                 break;
87         case -EILSEQ:
88                 errmsg = "CRC/Timeout (could be anything)";
89                 break;
90         case -ETIME:
91                 errmsg = "Device does not respond";
92                 break;
93         }
94         if (packet < 0) {
95                 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
96         } else {
97                 au0828_isocdbg("URB packet %d, status %d [%s].\n",
98                                packet, status, errmsg);
99         }
100 }
101
102 static int check_dev(struct au0828_dev *dev)
103 {
104         if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
105                 pr_info("v4l2 ioctl: device not present\n");
106                 return -ENODEV;
107         }
108
109         if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
110                 pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
111                 return -EIO;
112         }
113         return 0;
114 }
115
116 /*
117  * IRQ callback, called by URB callback
118  */
119 static void au0828_irq_callback(struct urb *urb)
120 {
121         struct au0828_dmaqueue  *dma_q = urb->context;
122         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
123         unsigned long flags = 0;
124         int i;
125
126         switch (urb->status) {
127         case 0:             /* success */
128         case -ETIMEDOUT:    /* NAK */
129                 break;
130         case -ECONNRESET:   /* kill */
131         case -ENOENT:
132         case -ESHUTDOWN:
133                 au0828_isocdbg("au0828_irq_callback called: status kill\n");
134                 return;
135         default:            /* unknown error */
136                 au0828_isocdbg("urb completion error %d.\n", urb->status);
137                 break;
138         }
139
140         /* Copy data from URB */
141         spin_lock_irqsave(&dev->slock, flags);
142         dev->isoc_ctl.isoc_copy(dev, urb);
143         spin_unlock_irqrestore(&dev->slock, flags);
144
145         /* Reset urb buffers */
146         for (i = 0; i < urb->number_of_packets; i++) {
147                 urb->iso_frame_desc[i].status = 0;
148                 urb->iso_frame_desc[i].actual_length = 0;
149         }
150         urb->status = 0;
151
152         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
153         if (urb->status) {
154                 au0828_isocdbg("urb resubmit failed (error=%i)\n",
155                                urb->status);
156         }
157         dev->stream_state = STREAM_ON;
158 }
159
160 /*
161  * Stop and Deallocate URBs
162  */
163 static void au0828_uninit_isoc(struct au0828_dev *dev)
164 {
165         struct urb *urb;
166         int i;
167
168         au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
169
170         dev->isoc_ctl.nfields = -1;
171         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
172                 urb = dev->isoc_ctl.urb[i];
173                 if (urb) {
174                         if (!irqs_disabled())
175                                 usb_kill_urb(urb);
176                         else
177                                 usb_unlink_urb(urb);
178
179                         if (dev->isoc_ctl.transfer_buffer[i]) {
180                                 usb_free_coherent(dev->usbdev,
181                                         urb->transfer_buffer_length,
182                                         dev->isoc_ctl.transfer_buffer[i],
183                                         urb->transfer_dma);
184                         }
185                         usb_free_urb(urb);
186                         dev->isoc_ctl.urb[i] = NULL;
187                 }
188                 dev->isoc_ctl.transfer_buffer[i] = NULL;
189         }
190
191         kfree(dev->isoc_ctl.urb);
192         kfree(dev->isoc_ctl.transfer_buffer);
193
194         dev->isoc_ctl.urb = NULL;
195         dev->isoc_ctl.transfer_buffer = NULL;
196         dev->isoc_ctl.num_bufs = 0;
197
198         dev->stream_state = STREAM_OFF;
199 }
200
201 /*
202  * Allocate URBs and start IRQ
203  */
204 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
205                             int num_bufs, int max_pkt_size,
206                             int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
207 {
208         struct au0828_dmaqueue *dma_q = &dev->vidq;
209         int i;
210         int sb_size, pipe;
211         struct urb *urb;
212         int j, k;
213         int rc;
214
215         au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
216
217         dev->isoc_ctl.isoc_copy = isoc_copy;
218         dev->isoc_ctl.num_bufs = num_bufs;
219
220         dev->isoc_ctl.urb = kcalloc(num_bufs, sizeof(void *),  GFP_KERNEL);
221         if (!dev->isoc_ctl.urb) {
222                 au0828_isocdbg("cannot alloc memory for usb buffers\n");
223                 return -ENOMEM;
224         }
225
226         dev->isoc_ctl.transfer_buffer = kcalloc(num_bufs, sizeof(void *),
227                                                 GFP_KERNEL);
228         if (!dev->isoc_ctl.transfer_buffer) {
229                 au0828_isocdbg("cannot allocate memory for usb transfer\n");
230                 kfree(dev->isoc_ctl.urb);
231                 return -ENOMEM;
232         }
233
234         dev->isoc_ctl.max_pkt_size = max_pkt_size;
235         dev->isoc_ctl.buf = NULL;
236
237         sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
238
239         /* allocate urbs and transfer buffers */
240         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
241                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
242                 if (!urb) {
243                         au0828_uninit_isoc(dev);
244                         return -ENOMEM;
245                 }
246                 dev->isoc_ctl.urb[i] = urb;
247
248                 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
249                         sb_size, GFP_KERNEL, &urb->transfer_dma);
250                 if (!dev->isoc_ctl.transfer_buffer[i]) {
251                         printk("unable to allocate %i bytes for transfer buffer %i%s\n",
252                                         sb_size, i,
253                                         in_interrupt() ? " while in int" : "");
254                         au0828_uninit_isoc(dev);
255                         return -ENOMEM;
256                 }
257                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
258
259                 pipe = usb_rcvisocpipe(dev->usbdev,
260                                        dev->isoc_in_endpointaddr),
261
262                 usb_fill_int_urb(urb, dev->usbdev, pipe,
263                                  dev->isoc_ctl.transfer_buffer[i], sb_size,
264                                  au0828_irq_callback, dma_q, 1);
265
266                 urb->number_of_packets = max_packets;
267                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
268
269                 k = 0;
270                 for (j = 0; j < max_packets; j++) {
271                         urb->iso_frame_desc[j].offset = k;
272                         urb->iso_frame_desc[j].length =
273                                                 dev->isoc_ctl.max_pkt_size;
274                         k += dev->isoc_ctl.max_pkt_size;
275                 }
276         }
277
278         /* submit urbs and enables IRQ */
279         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
280                 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
281                 if (rc) {
282                         au0828_isocdbg("submit of urb %i failed (error=%i)\n",
283                                        i, rc);
284                         au0828_uninit_isoc(dev);
285                         return rc;
286                 }
287         }
288
289         return 0;
290 }
291
292 /*
293  * Announces that a buffer were filled and request the next
294  */
295 static inline void buffer_filled(struct au0828_dev *dev,
296                                  struct au0828_dmaqueue *dma_q,
297                                  struct au0828_buffer *buf)
298 {
299         struct vb2_v4l2_buffer *vb = &buf->vb;
300         struct vb2_queue *q = vb->vb2_buf.vb2_queue;
301
302         /* Advice that buffer was filled */
303         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
304
305         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
306                 vb->sequence = dev->frame_count++;
307         else
308                 vb->sequence = dev->vbi_frame_count++;
309
310         vb->field = V4L2_FIELD_INTERLACED;
311         vb->vb2_buf.timestamp = ktime_get_ns();
312         vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
313 }
314
315 /*
316  * Identify the buffer header type and properly handles
317  */
318 static void au0828_copy_video(struct au0828_dev *dev,
319                               struct au0828_dmaqueue  *dma_q,
320                               struct au0828_buffer *buf,
321                               unsigned char *p,
322                               unsigned char *outp, unsigned long len)
323 {
324         void *fieldstart, *startwrite, *startread;
325         int  linesdone, currlinedone, offset, lencopy, remain;
326         int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
327
328         if (len == 0)
329                 return;
330
331         if (dma_q->pos + len > buf->length)
332                 len = buf->length - dma_q->pos;
333
334         startread = p;
335         remain = len;
336
337         /* Interlaces frame */
338         if (buf->top_field)
339                 fieldstart = outp;
340         else
341                 fieldstart = outp + bytesperline;
342
343         linesdone = dma_q->pos / bytesperline;
344         currlinedone = dma_q->pos % bytesperline;
345         offset = linesdone * bytesperline * 2 + currlinedone;
346         startwrite = fieldstart + offset;
347         lencopy = bytesperline - currlinedone;
348         lencopy = lencopy > remain ? remain : lencopy;
349
350         if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
351                 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
352                                ((char *)startwrite + lencopy) -
353                                ((char *)outp + buf->length));
354                 remain = (char *)outp + buf->length - (char *)startwrite;
355                 lencopy = remain;
356         }
357         if (lencopy <= 0)
358                 return;
359         memcpy(startwrite, startread, lencopy);
360
361         remain -= lencopy;
362
363         while (remain > 0) {
364                 startwrite += lencopy + bytesperline;
365                 startread += lencopy;
366                 if (bytesperline > remain)
367                         lencopy = remain;
368                 else
369                         lencopy = bytesperline;
370
371                 if ((char *)startwrite + lencopy > (char *)outp +
372                     buf->length) {
373                         au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
374                                        ((char *)startwrite + lencopy) -
375                                        ((char *)outp + buf->length));
376                         lencopy = remain = (char *)outp + buf->length -
377                                            (char *)startwrite;
378                 }
379                 if (lencopy <= 0)
380                         break;
381
382                 memcpy(startwrite, startread, lencopy);
383
384                 remain -= lencopy;
385         }
386
387         if (offset > 1440) {
388                 /* We have enough data to check for greenscreen */
389                 if (outp[0] < 0x60 && outp[1440] < 0x60)
390                         dev->greenscreen_detected = 1;
391         }
392
393         dma_q->pos += len;
394 }
395
396 /*
397  * video-buf generic routine to get the next available buffer
398  */
399 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
400                                 struct au0828_buffer **buf)
401 {
402         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
403
404         if (list_empty(&dma_q->active)) {
405                 au0828_isocdbg("No active queue to serve\n");
406                 dev->isoc_ctl.buf = NULL;
407                 *buf = NULL;
408                 return;
409         }
410
411         /* Get the next buffer */
412         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
413         /* Cleans up buffer - Useful for testing for frame/URB loss */
414         list_del(&(*buf)->list);
415         dma_q->pos = 0;
416         (*buf)->vb_buf = (*buf)->mem;
417         dev->isoc_ctl.buf = *buf;
418
419         return;
420 }
421
422 static void au0828_copy_vbi(struct au0828_dev *dev,
423                               struct au0828_dmaqueue  *dma_q,
424                               struct au0828_buffer *buf,
425                               unsigned char *p,
426                               unsigned char *outp, unsigned long len)
427 {
428         unsigned char *startwrite, *startread;
429         int bytesperline;
430         int i, j = 0;
431
432         if (dev == NULL) {
433                 au0828_isocdbg("dev is null\n");
434                 return;
435         }
436
437         if (dma_q == NULL) {
438                 au0828_isocdbg("dma_q is null\n");
439                 return;
440         }
441         if (buf == NULL)
442                 return;
443         if (p == NULL) {
444                 au0828_isocdbg("p is null\n");
445                 return;
446         }
447         if (outp == NULL) {
448                 au0828_isocdbg("outp is null\n");
449                 return;
450         }
451
452         bytesperline = dev->vbi_width;
453
454         if (dma_q->pos + len > buf->length)
455                 len = buf->length - dma_q->pos;
456
457         startread = p;
458         startwrite = outp + (dma_q->pos / 2);
459
460         /* Make sure the bottom field populates the second half of the frame */
461         if (buf->top_field == 0)
462                 startwrite += bytesperline * dev->vbi_height;
463
464         for (i = 0; i < len; i += 2)
465                 startwrite[j++] = startread[i+1];
466
467         dma_q->pos += len;
468 }
469
470
471 /*
472  * video-buf generic routine to get the next available VBI buffer
473  */
474 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
475                                     struct au0828_buffer **buf)
476 {
477         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
478
479         if (list_empty(&dma_q->active)) {
480                 au0828_isocdbg("No active queue to serve\n");
481                 dev->isoc_ctl.vbi_buf = NULL;
482                 *buf = NULL;
483                 return;
484         }
485
486         /* Get the next buffer */
487         *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
488         /* Cleans up buffer - Useful for testing for frame/URB loss */
489         list_del(&(*buf)->list);
490         dma_q->pos = 0;
491         (*buf)->vb_buf = (*buf)->mem;
492         dev->isoc_ctl.vbi_buf = *buf;
493         return;
494 }
495
496 /*
497  * Controls the isoc copy of each urb packet
498  */
499 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
500 {
501         struct au0828_buffer    *buf;
502         struct au0828_buffer    *vbi_buf;
503         struct au0828_dmaqueue  *dma_q = urb->context;
504         struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
505         unsigned char *outp = NULL;
506         unsigned char *vbioutp = NULL;
507         int i, len = 0, rc = 1;
508         unsigned char *p;
509         unsigned char fbyte;
510         unsigned int vbi_field_size;
511         unsigned int remain, lencopy;
512
513         if (!dev)
514                 return 0;
515
516         if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
517             test_bit(DEV_MISCONFIGURED, &dev->dev_state))
518                 return 0;
519
520         if (urb->status < 0) {
521                 print_err_status(dev, -1, urb->status);
522                 if (urb->status == -ENOENT)
523                         return 0;
524         }
525
526         buf = dev->isoc_ctl.buf;
527         if (buf != NULL)
528                 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
529
530         vbi_buf = dev->isoc_ctl.vbi_buf;
531         if (vbi_buf != NULL)
532                 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
533
534         for (i = 0; i < urb->number_of_packets; i++) {
535                 int status = urb->iso_frame_desc[i].status;
536
537                 if (status < 0) {
538                         print_err_status(dev, i, status);
539                         if (urb->iso_frame_desc[i].status != -EPROTO)
540                                 continue;
541                 }
542
543                 if (urb->iso_frame_desc[i].actual_length <= 0)
544                         continue;
545
546                 if (urb->iso_frame_desc[i].actual_length >
547                                                 dev->max_pkt_size) {
548                         au0828_isocdbg("packet bigger than packet size");
549                         continue;
550                 }
551
552                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
553                 fbyte = p[0];
554                 len = urb->iso_frame_desc[i].actual_length - 4;
555                 p += 4;
556
557                 if (fbyte & 0x80) {
558                         len -= 4;
559                         p += 4;
560                         au0828_isocdbg("Video frame %s\n",
561                                        (fbyte & 0x40) ? "odd" : "even");
562                         if (fbyte & 0x40) {
563                                 /* VBI */
564                                 if (vbi_buf != NULL)
565                                         buffer_filled(dev, vbi_dma_q, vbi_buf);
566                                 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
567                                 if (vbi_buf == NULL)
568                                         vbioutp = NULL;
569                                 else
570                                         vbioutp = vb2_plane_vaddr(
571                                                 &vbi_buf->vb.vb2_buf, 0);
572
573                                 /* Video */
574                                 if (buf != NULL)
575                                         buffer_filled(dev, dma_q, buf);
576                                 get_next_buf(dma_q, &buf);
577                                 if (buf == NULL)
578                                         outp = NULL;
579                                 else
580                                         outp = vb2_plane_vaddr(
581                                                 &buf->vb.vb2_buf, 0);
582
583                                 /* As long as isoc traffic is arriving, keep
584                                    resetting the timer */
585                                 if (dev->vid_timeout_running)
586                                         mod_timer(&dev->vid_timeout,
587                                                   jiffies + (HZ / 10));
588                                 if (dev->vbi_timeout_running)
589                                         mod_timer(&dev->vbi_timeout,
590                                                   jiffies + (HZ / 10));
591                         }
592
593                         if (buf != NULL) {
594                                 if (fbyte & 0x40)
595                                         buf->top_field = 1;
596                                 else
597                                         buf->top_field = 0;
598                         }
599
600                         if (vbi_buf != NULL) {
601                                 if (fbyte & 0x40)
602                                         vbi_buf->top_field = 1;
603                                 else
604                                         vbi_buf->top_field = 0;
605                         }
606
607                         dev->vbi_read = 0;
608                         vbi_dma_q->pos = 0;
609                         dma_q->pos = 0;
610                 }
611
612                 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
613                 if (dev->vbi_read < vbi_field_size) {
614                         remain  = vbi_field_size - dev->vbi_read;
615                         if (len < remain)
616                                 lencopy = len;
617                         else
618                                 lencopy = remain;
619
620                         if (vbi_buf != NULL)
621                                 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
622                                                 vbioutp, len);
623
624                         len -= lencopy;
625                         p += lencopy;
626                         dev->vbi_read += lencopy;
627                 }
628
629                 if (dev->vbi_read >= vbi_field_size && buf != NULL)
630                         au0828_copy_video(dev, dma_q, buf, p, outp, len);
631         }
632         return rc;
633 }
634
635 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
636 {
637 #ifdef CONFIG_MEDIA_CONTROLLER
638         int i;
639
640         for (i = 0; i < AU0828_MAX_INPUT; i++) {
641                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
642                         return;
643                 media_device_unregister_entity(&dev->input_ent[i]);
644         }
645 #endif
646 }
647
648 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
649 {
650         struct au0828_dev *dev =
651                 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
652
653         v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
654         v4l2_device_unregister(&dev->v4l2_dev);
655         au0828_usb_v4l2_media_release(dev);
656         au0828_usb_release(dev);
657 }
658
659 int au0828_v4l2_device_register(struct usb_interface *interface,
660                                 struct au0828_dev *dev)
661 {
662         int retval;
663
664         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
665                 return 0;
666
667         /* Create the v4l2_device */
668 #ifdef CONFIG_MEDIA_CONTROLLER
669         dev->v4l2_dev.mdev = dev->media_dev;
670 #endif
671         retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
672         if (retval) {
673                 pr_err("%s() v4l2_device_register failed\n",
674                        __func__);
675                 return retval;
676         }
677
678         dev->v4l2_dev.release = au0828_usb_v4l2_release;
679
680         /* This control handler will inherit the controls from au8522 */
681         retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
682         if (retval) {
683                 pr_err("%s() v4l2_ctrl_handler_init failed\n",
684                        __func__);
685                 return retval;
686         }
687         dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
688
689         return 0;
690 }
691
692 static int queue_setup(struct vb2_queue *vq,
693                        unsigned int *nbuffers, unsigned int *nplanes,
694                        unsigned int sizes[], struct device *alloc_devs[])
695 {
696         struct au0828_dev *dev = vb2_get_drv_priv(vq);
697         unsigned long size = dev->height * dev->bytesperline;
698
699         if (*nplanes)
700                 return sizes[0] < size ? -EINVAL : 0;
701         *nplanes = 1;
702         sizes[0] = size;
703         return 0;
704 }
705
706 static int
707 buffer_prepare(struct vb2_buffer *vb)
708 {
709         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
710         struct au0828_buffer *buf = container_of(vbuf,
711                                 struct au0828_buffer, vb);
712         struct au0828_dev    *dev = vb2_get_drv_priv(vb->vb2_queue);
713
714         buf->length = dev->height * dev->bytesperline;
715
716         if (vb2_plane_size(vb, 0) < buf->length) {
717                 pr_err("%s data will not fit into plane (%lu < %lu)\n",
718                         __func__, vb2_plane_size(vb, 0), buf->length);
719                 return -EINVAL;
720         }
721         vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
722         return 0;
723 }
724
725 static void
726 buffer_queue(struct vb2_buffer *vb)
727 {
728         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
729         struct au0828_buffer    *buf     = container_of(vbuf,
730                                                         struct au0828_buffer,
731                                                         vb);
732         struct au0828_dev       *dev     = vb2_get_drv_priv(vb->vb2_queue);
733         struct au0828_dmaqueue  *vidq    = &dev->vidq;
734         unsigned long flags = 0;
735
736         buf->mem = vb2_plane_vaddr(vb, 0);
737         buf->length = vb2_plane_size(vb, 0);
738
739         spin_lock_irqsave(&dev->slock, flags);
740         list_add_tail(&buf->list, &vidq->active);
741         spin_unlock_irqrestore(&dev->slock, flags);
742 }
743
744 static int au0828_i2s_init(struct au0828_dev *dev)
745 {
746         /* Enable i2s mode */
747         au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
748         return 0;
749 }
750
751 /*
752  * Auvitek au0828 analog stream enable
753  */
754 static int au0828_analog_stream_enable(struct au0828_dev *d)
755 {
756         struct usb_interface *iface;
757         int ret, h, w;
758
759         dprintk(1, "au0828_analog_stream_enable called\n");
760
761         iface = usb_ifnum_to_if(d->usbdev, 0);
762         if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
763                 dprintk(1, "Changing intf#0 to alt 5\n");
764                 /* set au0828 interface0 to AS5 here again */
765                 ret = usb_set_interface(d->usbdev, 0, 5);
766                 if (ret < 0) {
767                         pr_info("Au0828 can't set alt setting to 5!\n");
768                         return -EBUSY;
769                 }
770         }
771
772         h = d->height / 2 + 2;
773         w = d->width * 2;
774
775         au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
776         au0828_writereg(d, 0x106, 0x00);
777         /* set x position */
778         au0828_writereg(d, 0x110, 0x00);
779         au0828_writereg(d, 0x111, 0x00);
780         au0828_writereg(d, 0x114, w & 0xff);
781         au0828_writereg(d, 0x115, w >> 8);
782         /* set y position */
783         au0828_writereg(d, 0x112, 0x00);
784         au0828_writereg(d, 0x113, 0x00);
785         au0828_writereg(d, 0x116, h & 0xff);
786         au0828_writereg(d, 0x117, h >> 8);
787         au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
788
789         return 0;
790 }
791
792 static int au0828_analog_stream_disable(struct au0828_dev *d)
793 {
794         dprintk(1, "au0828_analog_stream_disable called\n");
795         au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
796         return 0;
797 }
798
799 static void au0828_analog_stream_reset(struct au0828_dev *dev)
800 {
801         dprintk(1, "au0828_analog_stream_reset called\n");
802         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
803         mdelay(30);
804         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
805 }
806
807 /*
808  * Some operations needs to stop current streaming
809  */
810 static int au0828_stream_interrupt(struct au0828_dev *dev)
811 {
812         dev->stream_state = STREAM_INTERRUPT;
813         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
814                 return -ENODEV;
815         return 0;
816 }
817
818 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
819 {
820         struct au0828_dev *dev = vb2_get_drv_priv(vq);
821         int rc = 0;
822
823         dprintk(1, "au0828_start_analog_streaming called %d\n",
824                 dev->streaming_users);
825
826         if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
827                 dev->frame_count = 0;
828         else
829                 dev->vbi_frame_count = 0;
830
831         if (dev->streaming_users == 0) {
832                 /* If we were doing ac97 instead of i2s, it would go here...*/
833                 au0828_i2s_init(dev);
834                 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
835                                    AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
836                                    au0828_isoc_copy);
837                 if (rc < 0) {
838                         pr_info("au0828_init_isoc failed\n");
839                         return rc;
840                 }
841
842                 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
843                         v4l2_device_call_all(&dev->v4l2_dev, 0, video,
844                                                 s_stream, 1);
845                         dev->vid_timeout_running = 1;
846                         mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
847                 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
848                         dev->vbi_timeout_running = 1;
849                         mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
850                 }
851         }
852         dev->streaming_users++;
853         return rc;
854 }
855
856 static void au0828_stop_streaming(struct vb2_queue *vq)
857 {
858         struct au0828_dev *dev = vb2_get_drv_priv(vq);
859         struct au0828_dmaqueue *vidq = &dev->vidq;
860         unsigned long flags = 0;
861
862         dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
863
864         if (dev->streaming_users-- == 1)
865                 au0828_uninit_isoc(dev);
866
867         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
868         dev->vid_timeout_running = 0;
869         del_timer_sync(&dev->vid_timeout);
870
871         spin_lock_irqsave(&dev->slock, flags);
872         if (dev->isoc_ctl.buf != NULL) {
873                 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
874                                 VB2_BUF_STATE_ERROR);
875                 dev->isoc_ctl.buf = NULL;
876         }
877         while (!list_empty(&vidq->active)) {
878                 struct au0828_buffer *buf;
879
880                 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
881                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
882                 list_del(&buf->list);
883         }
884         spin_unlock_irqrestore(&dev->slock, flags);
885 }
886
887 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
888 {
889         struct au0828_dev *dev = vb2_get_drv_priv(vq);
890         struct au0828_dmaqueue *vbiq = &dev->vbiq;
891         unsigned long flags = 0;
892
893         dprintk(1, "au0828_stop_vbi_streaming called %d\n",
894                 dev->streaming_users);
895
896         if (dev->streaming_users-- == 1)
897                 au0828_uninit_isoc(dev);
898
899         spin_lock_irqsave(&dev->slock, flags);
900         if (dev->isoc_ctl.vbi_buf != NULL) {
901                 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
902                                 VB2_BUF_STATE_ERROR);
903                 dev->isoc_ctl.vbi_buf = NULL;
904         }
905         while (!list_empty(&vbiq->active)) {
906                 struct au0828_buffer *buf;
907
908                 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
909                 list_del(&buf->list);
910                 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
911         }
912         spin_unlock_irqrestore(&dev->slock, flags);
913
914         dev->vbi_timeout_running = 0;
915         del_timer_sync(&dev->vbi_timeout);
916 }
917
918 static const struct vb2_ops au0828_video_qops = {
919         .queue_setup     = queue_setup,
920         .buf_prepare     = buffer_prepare,
921         .buf_queue       = buffer_queue,
922         .start_streaming = au0828_start_analog_streaming,
923         .stop_streaming  = au0828_stop_streaming,
924         .wait_prepare    = vb2_ops_wait_prepare,
925         .wait_finish     = vb2_ops_wait_finish,
926 };
927
928 /* ------------------------------------------------------------------
929    V4L2 interface
930    ------------------------------------------------------------------*/
931 /*
932  * au0828_analog_unregister
933  * unregister v4l2 devices
934  */
935 int au0828_analog_unregister(struct au0828_dev *dev)
936 {
937         dprintk(1, "au0828_analog_unregister called\n");
938
939         /* No analog TV */
940         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
941                 return 0;
942
943         mutex_lock(&au0828_sysfs_lock);
944         video_unregister_device(&dev->vdev);
945         video_unregister_device(&dev->vbi_dev);
946         mutex_unlock(&au0828_sysfs_lock);
947
948         v4l2_device_disconnect(&dev->v4l2_dev);
949         v4l2_device_put(&dev->v4l2_dev);
950
951         return 1;
952 }
953
954 /* This function ensures that video frames continue to be delivered even if
955    the ITU-656 input isn't receiving any data (thereby preventing applications
956    such as tvtime from hanging) */
957 static void au0828_vid_buffer_timeout(struct timer_list *t)
958 {
959         struct au0828_dev *dev = from_timer(dev, t, vid_timeout);
960         struct au0828_dmaqueue *dma_q = &dev->vidq;
961         struct au0828_buffer *buf;
962         unsigned char *vid_data;
963         unsigned long flags = 0;
964
965         spin_lock_irqsave(&dev->slock, flags);
966
967         buf = dev->isoc_ctl.buf;
968         if (buf != NULL) {
969                 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
970                 memset(vid_data, 0x00, buf->length); /* Blank green frame */
971                 buffer_filled(dev, dma_q, buf);
972         }
973         get_next_buf(dma_q, &buf);
974
975         if (dev->vid_timeout_running == 1)
976                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
977
978         spin_unlock_irqrestore(&dev->slock, flags);
979 }
980
981 static void au0828_vbi_buffer_timeout(struct timer_list *t)
982 {
983         struct au0828_dev *dev = from_timer(dev, t, vbi_timeout);
984         struct au0828_dmaqueue *dma_q = &dev->vbiq;
985         struct au0828_buffer *buf;
986         unsigned char *vbi_data;
987         unsigned long flags = 0;
988
989         spin_lock_irqsave(&dev->slock, flags);
990
991         buf = dev->isoc_ctl.vbi_buf;
992         if (buf != NULL) {
993                 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
994                 memset(vbi_data, 0x00, buf->length);
995                 buffer_filled(dev, dma_q, buf);
996         }
997         vbi_get_next_buf(dma_q, &buf);
998
999         if (dev->vbi_timeout_running == 1)
1000                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1001         spin_unlock_irqrestore(&dev->slock, flags);
1002 }
1003
1004 static int au0828_v4l2_open(struct file *filp)
1005 {
1006         struct au0828_dev *dev = video_drvdata(filp);
1007         int ret;
1008
1009         dprintk(1,
1010                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1011                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1012                 dev->streaming_users, dev->users);
1013
1014         if (mutex_lock_interruptible(&dev->lock))
1015                 return -ERESTARTSYS;
1016
1017         ret = v4l2_fh_open(filp);
1018         if (ret) {
1019                 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1020                                 __func__, ret);
1021                 mutex_unlock(&dev->lock);
1022                 return ret;
1023         }
1024
1025         if (dev->users == 0) {
1026                 au0828_analog_stream_enable(dev);
1027                 au0828_analog_stream_reset(dev);
1028                 dev->stream_state = STREAM_OFF;
1029                 set_bit(DEV_INITIALIZED, &dev->dev_state);
1030         }
1031         dev->users++;
1032         mutex_unlock(&dev->lock);
1033         return ret;
1034 }
1035
1036 static int au0828_v4l2_close(struct file *filp)
1037 {
1038         int ret;
1039         struct au0828_dev *dev = video_drvdata(filp);
1040         struct video_device *vdev = video_devdata(filp);
1041
1042         dprintk(1,
1043                 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1044                 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1045                 dev->streaming_users, dev->users);
1046
1047         mutex_lock(&dev->lock);
1048         if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1049                 /* Cancel timeout thread in case they didn't call streamoff */
1050                 dev->vid_timeout_running = 0;
1051                 del_timer_sync(&dev->vid_timeout);
1052         } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1053                         dev->vbi_timeout_running) {
1054                 /* Cancel timeout thread in case they didn't call streamoff */
1055                 dev->vbi_timeout_running = 0;
1056                 del_timer_sync(&dev->vbi_timeout);
1057         }
1058
1059         if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1060                 goto end;
1061
1062         if (dev->users == 1) {
1063                 /*
1064                  * Avoid putting tuner in sleep if DVB or ALSA are
1065                  * streaming.
1066                  *
1067                  * On most USB devices  like au0828 the tuner can
1068                  * be safely put in sleep stare here if ALSA isn't
1069                  * streaming. Exceptions are some very old USB tuner
1070                  * models such as em28xx-based WinTV USB2 which have
1071                  * a separate audio output jack. The devices that have
1072                  * a separate audio output jack have analog tuners,
1073                  * like Philips FM1236. Those devices are always on,
1074                  * so the s_power callback are silently ignored.
1075                  * So, the current logic here does the following:
1076                  * Disable (put tuner to sleep) when
1077                  * - ALSA and DVB aren't not streaming;
1078                  * - the last V4L2 file handler is closed.
1079                  *
1080                  * FIXME:
1081                  *
1082                  * Additionally, this logic could be improved to
1083                  * disable the media source if the above conditions
1084                  * are met and if the device:
1085                  * - doesn't have a separate audio out plug (or
1086                  * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1087                  *
1088                  * Once this additional logic is in place, a callback
1089                  * is needed to enable the media source and power on
1090                  * the tuner, for radio to work.
1091                 */
1092                 ret = v4l_enable_media_source(vdev);
1093                 if (ret == 0)
1094                         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner,
1095                                              standby);
1096                 dev->std_set_in_tuner_core = 0;
1097
1098                 /* When close the device, set the usb intf0 into alt0 to free
1099                    USB bandwidth */
1100                 ret = usb_set_interface(dev->usbdev, 0, 0);
1101                 if (ret < 0)
1102                         pr_info("Au0828 can't set alternate to 0!\n");
1103         }
1104 end:
1105         _vb2_fop_release(filp, NULL);
1106         dev->users--;
1107         mutex_unlock(&dev->lock);
1108         return 0;
1109 }
1110
1111 /* Must be called with dev->lock held */
1112 static void au0828_init_tuner(struct au0828_dev *dev)
1113 {
1114         struct v4l2_frequency f = {
1115                 .frequency = dev->ctrl_freq,
1116                 .type = V4L2_TUNER_ANALOG_TV,
1117         };
1118
1119         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1120                 dev->std_set_in_tuner_core, dev->dev_state);
1121
1122         if (dev->std_set_in_tuner_core)
1123                 return;
1124         dev->std_set_in_tuner_core = 1;
1125         i2c_gate_ctrl(dev, 1);
1126         /* If we've never sent the standard in tuner core, do so now.
1127            We don't do this at device probe because we don't want to
1128            incur the cost of a firmware load */
1129         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1130         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1131         i2c_gate_ctrl(dev, 0);
1132 }
1133
1134 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1135                              struct v4l2_format *format)
1136 {
1137         int ret;
1138         int width = format->fmt.pix.width;
1139         int height = format->fmt.pix.height;
1140
1141         /* If they are demanding a format other than the one we support,
1142            bail out (tvtime asks for UYVY and then retries with YUYV) */
1143         if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1144                 return -EINVAL;
1145
1146         /* format->fmt.pix.width only support 720 and height 480 */
1147         if (width != 720)
1148                 width = 720;
1149         if (height != 480)
1150                 height = 480;
1151
1152         format->fmt.pix.width = width;
1153         format->fmt.pix.height = height;
1154         format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1155         format->fmt.pix.bytesperline = width * 2;
1156         format->fmt.pix.sizeimage = width * height * 2;
1157         format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1158         format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1159         format->fmt.pix.priv = 0;
1160
1161         if (cmd == VIDIOC_TRY_FMT)
1162                 return 0;
1163
1164         /* maybe set new image format, driver current only support 720*480 */
1165         dev->width = width;
1166         dev->height = height;
1167         dev->frame_size = width * height * 2;
1168         dev->field_size = width * height;
1169         dev->bytesperline = width * 2;
1170
1171         if (dev->stream_state == STREAM_ON) {
1172                 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1173                 ret = au0828_stream_interrupt(dev);
1174                 if (ret != 0) {
1175                         dprintk(1, "error interrupting video stream!\n");
1176                         return ret;
1177                 }
1178         }
1179
1180         au0828_analog_stream_enable(dev);
1181
1182         return 0;
1183 }
1184
1185 static int vidioc_querycap(struct file *file, void  *priv,
1186                            struct v4l2_capability *cap)
1187 {
1188         struct video_device *vdev = video_devdata(file);
1189         struct au0828_dev *dev = video_drvdata(file);
1190
1191         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1192                 dev->std_set_in_tuner_core, dev->dev_state);
1193
1194         strscpy(cap->driver, "au0828", sizeof(cap->driver));
1195         strscpy(cap->card, dev->board.name, sizeof(cap->card));
1196         usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1197
1198         /* set the device capabilities */
1199         cap->device_caps = V4L2_CAP_AUDIO |
1200                 V4L2_CAP_READWRITE |
1201                 V4L2_CAP_STREAMING |
1202                 V4L2_CAP_TUNER;
1203         if (vdev->vfl_type == VFL_TYPE_GRABBER)
1204                 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1205         else
1206                 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1207         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1208                 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1209         return 0;
1210 }
1211
1212 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1213                                         struct v4l2_fmtdesc *f)
1214 {
1215         if (f->index)
1216                 return -EINVAL;
1217
1218         dprintk(1, "%s called\n", __func__);
1219
1220         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1221         strscpy(f->description, "Packed YUV2", sizeof(f->description));
1222
1223         f->flags = 0;
1224         f->pixelformat = V4L2_PIX_FMT_UYVY;
1225
1226         return 0;
1227 }
1228
1229 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1230                                         struct v4l2_format *f)
1231 {
1232         struct au0828_dev *dev = video_drvdata(file);
1233
1234         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1235                 dev->std_set_in_tuner_core, dev->dev_state);
1236
1237         f->fmt.pix.width = dev->width;
1238         f->fmt.pix.height = dev->height;
1239         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1240         f->fmt.pix.bytesperline = dev->bytesperline;
1241         f->fmt.pix.sizeimage = dev->frame_size;
1242         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1243         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1244         f->fmt.pix.priv = 0;
1245         return 0;
1246 }
1247
1248 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1249                                   struct v4l2_format *f)
1250 {
1251         struct au0828_dev *dev = video_drvdata(file);
1252
1253         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1254                 dev->std_set_in_tuner_core, dev->dev_state);
1255
1256         return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1257 }
1258
1259 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1260                                 struct v4l2_format *f)
1261 {
1262         struct au0828_dev *dev = video_drvdata(file);
1263         int rc;
1264
1265         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1266                 dev->std_set_in_tuner_core, dev->dev_state);
1267
1268         rc = check_dev(dev);
1269         if (rc < 0)
1270                 return rc;
1271
1272         if (vb2_is_busy(&dev->vb_vidq)) {
1273                 pr_info("%s queue busy\n", __func__);
1274                 rc = -EBUSY;
1275                 goto out;
1276         }
1277
1278         rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1279 out:
1280         return rc;
1281 }
1282
1283 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1284 {
1285         struct au0828_dev *dev = video_drvdata(file);
1286
1287         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1288                 dev->std_set_in_tuner_core, dev->dev_state);
1289
1290         if (norm == dev->std)
1291                 return 0;
1292
1293         if (dev->streaming_users > 0)
1294                 return -EBUSY;
1295
1296         dev->std = norm;
1297
1298         au0828_init_tuner(dev);
1299
1300         i2c_gate_ctrl(dev, 1);
1301
1302         /*
1303          * FIXME: when we support something other than 60Hz standards,
1304          * we are going to have to make the au0828 bridge adjust the size
1305          * of its capture buffer, which is currently hardcoded at 720x480
1306          */
1307
1308         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1309
1310         i2c_gate_ctrl(dev, 0);
1311
1312         return 0;
1313 }
1314
1315 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1316 {
1317         struct au0828_dev *dev = video_drvdata(file);
1318
1319         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1320                 dev->std_set_in_tuner_core, dev->dev_state);
1321
1322         *norm = dev->std;
1323         return 0;
1324 }
1325
1326 static int vidioc_enum_input(struct file *file, void *priv,
1327                                 struct v4l2_input *input)
1328 {
1329         struct au0828_dev *dev = video_drvdata(file);
1330         unsigned int tmp;
1331
1332         static const char *inames[] = {
1333                 [AU0828_VMUX_UNDEFINED] = "Undefined",
1334                 [AU0828_VMUX_COMPOSITE] = "Composite",
1335                 [AU0828_VMUX_SVIDEO] = "S-Video",
1336                 [AU0828_VMUX_CABLE] = "Cable TV",
1337                 [AU0828_VMUX_TELEVISION] = "Television",
1338                 [AU0828_VMUX_DVB] = "DVB",
1339         };
1340
1341         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1342                 dev->std_set_in_tuner_core, dev->dev_state);
1343
1344         tmp = input->index;
1345
1346         if (tmp >= AU0828_MAX_INPUT)
1347                 return -EINVAL;
1348         if (AUVI_INPUT(tmp).type == 0)
1349                 return -EINVAL;
1350
1351         input->index = tmp;
1352         strscpy(input->name, inames[AUVI_INPUT(tmp).type], sizeof(input->name));
1353         if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1354             (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1355                 input->type |= V4L2_INPUT_TYPE_TUNER;
1356                 input->audioset = 1;
1357         } else {
1358                 input->type |= V4L2_INPUT_TYPE_CAMERA;
1359                 input->audioset = 2;
1360         }
1361
1362         input->std = dev->vdev.tvnorms;
1363
1364         return 0;
1365 }
1366
1367 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1368 {
1369         struct au0828_dev *dev = video_drvdata(file);
1370
1371         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1372                 dev->std_set_in_tuner_core, dev->dev_state);
1373
1374         *i = dev->ctrl_input;
1375         return 0;
1376 }
1377
1378 static void au0828_s_input(struct au0828_dev *dev, int index)
1379 {
1380         int i;
1381
1382         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1383                 dev->std_set_in_tuner_core, dev->dev_state);
1384
1385         switch (AUVI_INPUT(index).type) {
1386         case AU0828_VMUX_SVIDEO:
1387                 dev->input_type = AU0828_VMUX_SVIDEO;
1388                 dev->ctrl_ainput = 1;
1389                 break;
1390         case AU0828_VMUX_COMPOSITE:
1391                 dev->input_type = AU0828_VMUX_COMPOSITE;
1392                 dev->ctrl_ainput = 1;
1393                 break;
1394         case AU0828_VMUX_TELEVISION:
1395                 dev->input_type = AU0828_VMUX_TELEVISION;
1396                 dev->ctrl_ainput = 0;
1397                 break;
1398         default:
1399                 dprintk(1, "unknown input type set [%d]\n",
1400                         AUVI_INPUT(index).type);
1401                 return;
1402         }
1403
1404         dev->ctrl_input = index;
1405
1406         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1407                         AUVI_INPUT(index).vmux, 0, 0);
1408
1409         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1410                 int enable = 0;
1411                 if (AUVI_INPUT(i).audio_setup == NULL)
1412                         continue;
1413
1414                 if (i == index)
1415                         enable = 1;
1416                 else
1417                         enable = 0;
1418                 if (enable) {
1419                         (AUVI_INPUT(i).audio_setup)(dev, enable);
1420                 } else {
1421                         /* Make sure we leave it turned on if some
1422                            other input is routed to this callback */
1423                         if ((AUVI_INPUT(i).audio_setup) !=
1424                             ((AUVI_INPUT(index).audio_setup))) {
1425                                 (AUVI_INPUT(i).audio_setup)(dev, enable);
1426                         }
1427                 }
1428         }
1429
1430         v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1431                         AUVI_INPUT(index).amux, 0, 0);
1432 }
1433
1434 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1435 {
1436         struct au0828_dev *dev = video_drvdata(file);
1437         struct video_device *vfd = video_devdata(file);
1438
1439         dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1440                 index);
1441         if (index >= AU0828_MAX_INPUT)
1442                 return -EINVAL;
1443         if (AUVI_INPUT(index).type == 0)
1444                 return -EINVAL;
1445
1446         if (dev->ctrl_input == index)
1447                 return 0;
1448
1449         au0828_s_input(dev, index);
1450
1451         /*
1452          * Input has been changed. Disable the media source
1453          * associated with the old input and enable source
1454          * for the newly set input
1455          */
1456         v4l_disable_media_source(vfd);
1457         return v4l_enable_media_source(vfd);
1458 }
1459
1460 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1461 {
1462         if (a->index > 1)
1463                 return -EINVAL;
1464
1465         dprintk(1, "%s called\n", __func__);
1466
1467         if (a->index == 0)
1468                 strscpy(a->name, "Television", sizeof(a->name));
1469         else
1470                 strscpy(a->name, "Line in", sizeof(a->name));
1471
1472         a->capability = V4L2_AUDCAP_STEREO;
1473         return 0;
1474 }
1475
1476 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1477 {
1478         struct au0828_dev *dev = video_drvdata(file);
1479
1480         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1481                 dev->std_set_in_tuner_core, dev->dev_state);
1482
1483         a->index = dev->ctrl_ainput;
1484         if (a->index == 0)
1485                 strscpy(a->name, "Television", sizeof(a->name));
1486         else
1487                 strscpy(a->name, "Line in", sizeof(a->name));
1488
1489         a->capability = V4L2_AUDCAP_STEREO;
1490         return 0;
1491 }
1492
1493 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1494 {
1495         struct au0828_dev *dev = video_drvdata(file);
1496
1497         if (a->index != dev->ctrl_ainput)
1498                 return -EINVAL;
1499
1500         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1501                 dev->std_set_in_tuner_core, dev->dev_state);
1502         return 0;
1503 }
1504
1505 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1506 {
1507         struct au0828_dev *dev = video_drvdata(file);
1508         struct video_device *vfd = video_devdata(file);
1509         int ret;
1510
1511         if (t->index != 0)
1512                 return -EINVAL;
1513
1514         ret = v4l_enable_media_source(vfd);
1515         if (ret)
1516                 return ret;
1517
1518         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1519                 dev->std_set_in_tuner_core, dev->dev_state);
1520
1521         strscpy(t->name, "Auvitek tuner", sizeof(t->name));
1522
1523         au0828_init_tuner(dev);
1524         i2c_gate_ctrl(dev, 1);
1525         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1526         i2c_gate_ctrl(dev, 0);
1527         return 0;
1528 }
1529
1530 static int vidioc_s_tuner(struct file *file, void *priv,
1531                                 const struct v4l2_tuner *t)
1532 {
1533         struct au0828_dev *dev = video_drvdata(file);
1534
1535         if (t->index != 0)
1536                 return -EINVAL;
1537
1538         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1539                 dev->std_set_in_tuner_core, dev->dev_state);
1540
1541         au0828_init_tuner(dev);
1542         i2c_gate_ctrl(dev, 1);
1543         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1544         i2c_gate_ctrl(dev, 0);
1545
1546         dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1547                 t->afc);
1548
1549         return 0;
1550
1551 }
1552
1553 static int vidioc_g_frequency(struct file *file, void *priv,
1554                                 struct v4l2_frequency *freq)
1555 {
1556         struct au0828_dev *dev = video_drvdata(file);
1557
1558         if (freq->tuner != 0)
1559                 return -EINVAL;
1560         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1561                 dev->std_set_in_tuner_core, dev->dev_state);
1562         freq->frequency = dev->ctrl_freq;
1563         return 0;
1564 }
1565
1566 static int vidioc_s_frequency(struct file *file, void *priv,
1567                                 const struct v4l2_frequency *freq)
1568 {
1569         struct au0828_dev *dev = video_drvdata(file);
1570         struct v4l2_frequency new_freq = *freq;
1571
1572         if (freq->tuner != 0)
1573                 return -EINVAL;
1574
1575         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1576                 dev->std_set_in_tuner_core, dev->dev_state);
1577
1578         au0828_init_tuner(dev);
1579         i2c_gate_ctrl(dev, 1);
1580
1581         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1582         /* Get the actual set (and possibly clamped) frequency */
1583         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1584         dev->ctrl_freq = new_freq.frequency;
1585
1586         i2c_gate_ctrl(dev, 0);
1587
1588         au0828_analog_stream_reset(dev);
1589
1590         return 0;
1591 }
1592
1593
1594 /* RAW VBI ioctls */
1595
1596 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1597                                 struct v4l2_format *format)
1598 {
1599         struct au0828_dev *dev = video_drvdata(file);
1600
1601         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1602                 dev->std_set_in_tuner_core, dev->dev_state);
1603
1604         format->fmt.vbi.samples_per_line = dev->vbi_width;
1605         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1606         format->fmt.vbi.offset = 0;
1607         format->fmt.vbi.flags = 0;
1608         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1609
1610         format->fmt.vbi.count[0] = dev->vbi_height;
1611         format->fmt.vbi.count[1] = dev->vbi_height;
1612         format->fmt.vbi.start[0] = 21;
1613         format->fmt.vbi.start[1] = 284;
1614         memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1615
1616         return 0;
1617 }
1618
1619 static int vidioc_cropcap(struct file *file, void *priv,
1620                           struct v4l2_cropcap *cc)
1621 {
1622         struct au0828_dev *dev = video_drvdata(file);
1623
1624         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1625                 return -EINVAL;
1626
1627         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1628                 dev->std_set_in_tuner_core, dev->dev_state);
1629
1630         cc->bounds.left = 0;
1631         cc->bounds.top = 0;
1632         cc->bounds.width = dev->width;
1633         cc->bounds.height = dev->height;
1634
1635         cc->defrect = cc->bounds;
1636
1637         cc->pixelaspect.numerator = 54;
1638         cc->pixelaspect.denominator = 59;
1639
1640         return 0;
1641 }
1642
1643 #ifdef CONFIG_VIDEO_ADV_DEBUG
1644 static int vidioc_g_register(struct file *file, void *priv,
1645                              struct v4l2_dbg_register *reg)
1646 {
1647         struct au0828_dev *dev = video_drvdata(file);
1648
1649         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1650                 dev->std_set_in_tuner_core, dev->dev_state);
1651
1652         reg->val = au0828_read(dev, reg->reg);
1653         reg->size = 1;
1654         return 0;
1655 }
1656
1657 static int vidioc_s_register(struct file *file, void *priv,
1658                              const struct v4l2_dbg_register *reg)
1659 {
1660         struct au0828_dev *dev = video_drvdata(file);
1661
1662         dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1663                 dev->std_set_in_tuner_core, dev->dev_state);
1664
1665         return au0828_writereg(dev, reg->reg, reg->val);
1666 }
1667 #endif
1668
1669 static int vidioc_log_status(struct file *file, void *fh)
1670 {
1671         struct video_device *vdev = video_devdata(file);
1672
1673         dprintk(1, "%s called\n", __func__);
1674
1675         v4l2_ctrl_log_status(file, fh);
1676         v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1677         return 0;
1678 }
1679
1680 void au0828_v4l2_suspend(struct au0828_dev *dev)
1681 {
1682         struct urb *urb;
1683         int i;
1684
1685         pr_info("stopping V4L2\n");
1686
1687         if (dev->stream_state == STREAM_ON) {
1688                 pr_info("stopping V4L2 active URBs\n");
1689                 au0828_analog_stream_disable(dev);
1690                 /* stop urbs */
1691                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1692                         urb = dev->isoc_ctl.urb[i];
1693                         if (urb) {
1694                                 if (!irqs_disabled())
1695                                         usb_kill_urb(urb);
1696                                 else
1697                                         usb_unlink_urb(urb);
1698                         }
1699                 }
1700         }
1701
1702         if (dev->vid_timeout_running)
1703                 del_timer_sync(&dev->vid_timeout);
1704         if (dev->vbi_timeout_running)
1705                 del_timer_sync(&dev->vbi_timeout);
1706 }
1707
1708 void au0828_v4l2_resume(struct au0828_dev *dev)
1709 {
1710         int i, rc;
1711
1712         pr_info("restarting V4L2\n");
1713
1714         if (dev->stream_state == STREAM_ON) {
1715                 au0828_stream_interrupt(dev);
1716                 au0828_init_tuner(dev);
1717         }
1718
1719         if (dev->vid_timeout_running)
1720                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1721         if (dev->vbi_timeout_running)
1722                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1723
1724         /* If we were doing ac97 instead of i2s, it would go here...*/
1725         au0828_i2s_init(dev);
1726
1727         au0828_analog_stream_enable(dev);
1728
1729         if (!(dev->stream_state == STREAM_ON)) {
1730                 au0828_analog_stream_reset(dev);
1731                 /* submit urbs */
1732                 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1733                         rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1734                         if (rc) {
1735                                 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1736                                                i, rc);
1737                                 au0828_uninit_isoc(dev);
1738                         }
1739                 }
1740         }
1741 }
1742
1743 static const struct v4l2_file_operations au0828_v4l_fops = {
1744         .owner      = THIS_MODULE,
1745         .open       = au0828_v4l2_open,
1746         .release    = au0828_v4l2_close,
1747         .read       = vb2_fop_read,
1748         .poll       = vb2_fop_poll,
1749         .mmap       = vb2_fop_mmap,
1750         .unlocked_ioctl = video_ioctl2,
1751 };
1752
1753 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1754         .vidioc_querycap            = vidioc_querycap,
1755         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1756         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1757         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1758         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1759         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1760         .vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1761         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1762         .vidioc_enumaudio           = vidioc_enumaudio,
1763         .vidioc_g_audio             = vidioc_g_audio,
1764         .vidioc_s_audio             = vidioc_s_audio,
1765         .vidioc_cropcap             = vidioc_cropcap,
1766
1767         .vidioc_reqbufs             = vb2_ioctl_reqbufs,
1768         .vidioc_create_bufs         = vb2_ioctl_create_bufs,
1769         .vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1770         .vidioc_querybuf            = vb2_ioctl_querybuf,
1771         .vidioc_qbuf                = vb2_ioctl_qbuf,
1772         .vidioc_dqbuf               = vb2_ioctl_dqbuf,
1773         .vidioc_expbuf               = vb2_ioctl_expbuf,
1774
1775         .vidioc_s_std               = vidioc_s_std,
1776         .vidioc_g_std               = vidioc_g_std,
1777         .vidioc_enum_input          = vidioc_enum_input,
1778         .vidioc_g_input             = vidioc_g_input,
1779         .vidioc_s_input             = vidioc_s_input,
1780
1781         .vidioc_streamon            = vb2_ioctl_streamon,
1782         .vidioc_streamoff           = vb2_ioctl_streamoff,
1783
1784         .vidioc_g_tuner             = vidioc_g_tuner,
1785         .vidioc_s_tuner             = vidioc_s_tuner,
1786         .vidioc_g_frequency         = vidioc_g_frequency,
1787         .vidioc_s_frequency         = vidioc_s_frequency,
1788 #ifdef CONFIG_VIDEO_ADV_DEBUG
1789         .vidioc_g_register          = vidioc_g_register,
1790         .vidioc_s_register          = vidioc_s_register,
1791 #endif
1792         .vidioc_log_status          = vidioc_log_status,
1793         .vidioc_subscribe_event     = v4l2_ctrl_subscribe_event,
1794         .vidioc_unsubscribe_event   = v4l2_event_unsubscribe,
1795 };
1796
1797 static const struct video_device au0828_video_template = {
1798         .fops                       = &au0828_v4l_fops,
1799         .release                    = video_device_release_empty,
1800         .ioctl_ops                  = &video_ioctl_ops,
1801         .tvnorms                    = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1802 };
1803
1804 static int au0828_vb2_setup(struct au0828_dev *dev)
1805 {
1806         int rc;
1807         struct vb2_queue *q;
1808
1809         /* Setup Videobuf2 for Video capture */
1810         q = &dev->vb_vidq;
1811         q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1812         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1813         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1814         q->drv_priv = dev;
1815         q->buf_struct_size = sizeof(struct au0828_buffer);
1816         q->ops = &au0828_video_qops;
1817         q->mem_ops = &vb2_vmalloc_memops;
1818
1819         rc = vb2_queue_init(q);
1820         if (rc < 0)
1821                 return rc;
1822
1823         /* Setup Videobuf2 for VBI capture */
1824         q = &dev->vb_vbiq;
1825         q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1826         q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1827         q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1828         q->drv_priv = dev;
1829         q->buf_struct_size = sizeof(struct au0828_buffer);
1830         q->ops = &au0828_vbi_qops;
1831         q->mem_ops = &vb2_vmalloc_memops;
1832
1833         rc = vb2_queue_init(q);
1834         if (rc < 0)
1835                 return rc;
1836
1837         return 0;
1838 }
1839
1840 static void au0828_analog_create_entities(struct au0828_dev *dev)
1841 {
1842 #if defined(CONFIG_MEDIA_CONTROLLER)
1843         static const char * const inames[] = {
1844                 [AU0828_VMUX_COMPOSITE] = "Composite",
1845                 [AU0828_VMUX_SVIDEO] = "S-Video",
1846                 [AU0828_VMUX_CABLE] = "Cable TV",
1847                 [AU0828_VMUX_TELEVISION] = "Television",
1848                 [AU0828_VMUX_DVB] = "DVB",
1849         };
1850         int ret, i;
1851
1852         /* Initialize Video and VBI pads */
1853         dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1854         ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1855         if (ret < 0)
1856                 pr_err("failed to initialize video media entity!\n");
1857
1858         dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1859         ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1860         if (ret < 0)
1861                 pr_err("failed to initialize vbi media entity!\n");
1862
1863         /* Create entities for each input connector */
1864         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1865                 struct media_entity *ent = &dev->input_ent[i];
1866
1867                 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1868                         break;
1869
1870                 ent->name = inames[AUVI_INPUT(i).type];
1871                 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1872                 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1873
1874                 switch (AUVI_INPUT(i).type) {
1875                 case AU0828_VMUX_COMPOSITE:
1876                         ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1877                         break;
1878                 case AU0828_VMUX_SVIDEO:
1879                         ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1880                         break;
1881                 case AU0828_VMUX_CABLE:
1882                 case AU0828_VMUX_TELEVISION:
1883                 case AU0828_VMUX_DVB:
1884                 default: /* Just to shut up a warning */
1885                         ent->function = MEDIA_ENT_F_CONN_RF;
1886                         break;
1887                 }
1888
1889                 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1890                 if (ret < 0)
1891                         pr_err("failed to initialize input pad[%d]!\n", i);
1892
1893                 ret = media_device_register_entity(dev->media_dev, ent);
1894                 if (ret < 0)
1895                         pr_err("failed to register input entity %d!\n", i);
1896         }
1897 #endif
1898 }
1899
1900 /**************************************************************************/
1901
1902 int au0828_analog_register(struct au0828_dev *dev,
1903                            struct usb_interface *interface)
1904 {
1905         int retval = -ENOMEM;
1906         struct usb_host_interface *iface_desc;
1907         struct usb_endpoint_descriptor *endpoint;
1908         int i, ret;
1909
1910         dprintk(1, "au0828_analog_register called for intf#%d!\n",
1911                 interface->cur_altsetting->desc.bInterfaceNumber);
1912
1913         /* No analog TV */
1914         if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1915                 return 0;
1916
1917         /* set au0828 usb interface0 to as5 */
1918         retval = usb_set_interface(dev->usbdev,
1919                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
1920         if (retval != 0) {
1921                 pr_info("Failure setting usb interface0 to as5\n");
1922                 return retval;
1923         }
1924
1925         /* Figure out which endpoint has the isoc interface */
1926         iface_desc = interface->cur_altsetting;
1927         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1928                 endpoint = &iface_desc->endpoint[i].desc;
1929                 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1930                      == USB_DIR_IN) &&
1931                     ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1932                      == USB_ENDPOINT_XFER_ISOC)) {
1933
1934                         /* we find our isoc in endpoint */
1935                         u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1936                         dev->max_pkt_size = (tmp & 0x07ff) *
1937                                 (((tmp & 0x1800) >> 11) + 1);
1938                         dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1939                         dprintk(1,
1940                                 "Found isoc endpoint 0x%02x, max size = %d\n",
1941                                 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1942                 }
1943         }
1944         if (!(dev->isoc_in_endpointaddr)) {
1945                 pr_info("Could not locate isoc endpoint\n");
1946                 return -ENODEV;
1947         }
1948
1949         init_waitqueue_head(&dev->open);
1950         spin_lock_init(&dev->slock);
1951
1952         /* init video dma queues */
1953         INIT_LIST_HEAD(&dev->vidq.active);
1954         INIT_LIST_HEAD(&dev->vbiq.active);
1955
1956         timer_setup(&dev->vid_timeout, au0828_vid_buffer_timeout, 0);
1957         timer_setup(&dev->vbi_timeout, au0828_vbi_buffer_timeout, 0);
1958
1959         dev->width = NTSC_STD_W;
1960         dev->height = NTSC_STD_H;
1961         dev->field_size = dev->width * dev->height;
1962         dev->frame_size = dev->field_size << 1;
1963         dev->bytesperline = dev->width << 1;
1964         dev->vbi_width = 720;
1965         dev->vbi_height = 1;
1966         dev->ctrl_ainput = 0;
1967         dev->ctrl_freq = 960;
1968         dev->std = V4L2_STD_NTSC_M;
1969         /* Default input is TV Tuner */
1970         au0828_s_input(dev, 0);
1971
1972         mutex_init(&dev->vb_queue_lock);
1973         mutex_init(&dev->vb_vbi_queue_lock);
1974
1975         /* Fill the video capture device struct */
1976         dev->vdev = au0828_video_template;
1977         dev->vdev.v4l2_dev = &dev->v4l2_dev;
1978         dev->vdev.lock = &dev->lock;
1979         dev->vdev.queue = &dev->vb_vidq;
1980         dev->vdev.queue->lock = &dev->vb_queue_lock;
1981         strscpy(dev->vdev.name, "au0828a video", sizeof(dev->vdev.name));
1982
1983         /* Setup the VBI device */
1984         dev->vbi_dev = au0828_video_template;
1985         dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
1986         dev->vbi_dev.lock = &dev->lock;
1987         dev->vbi_dev.queue = &dev->vb_vbiq;
1988         dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
1989         strscpy(dev->vbi_dev.name, "au0828a vbi", sizeof(dev->vbi_dev.name));
1990
1991         /* Init entities at the Media Controller */
1992         au0828_analog_create_entities(dev);
1993
1994         /* initialize videobuf2 stuff */
1995         retval = au0828_vb2_setup(dev);
1996         if (retval != 0) {
1997                 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
1998                         retval);
1999                 return -ENODEV;
2000         }
2001
2002         /* Register the v4l2 device */
2003         video_set_drvdata(&dev->vdev, dev);
2004         retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2005         if (retval != 0) {
2006                 dprintk(1, "unable to register video device (error = %d).\n",
2007                         retval);
2008                 ret = -ENODEV;
2009                 goto err_reg_vdev;
2010         }
2011
2012         /* Register the vbi device */
2013         video_set_drvdata(&dev->vbi_dev, dev);
2014         retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2015         if (retval != 0) {
2016                 dprintk(1, "unable to register vbi device (error = %d).\n",
2017                         retval);
2018                 ret = -ENODEV;
2019                 goto err_reg_vbi_dev;
2020         }
2021
2022 #ifdef CONFIG_MEDIA_CONTROLLER
2023         retval = v4l2_mc_create_media_graph(dev->media_dev);
2024         if (retval) {
2025                 pr_err("%s() au0282_dev_register failed to create graph\n",
2026                         __func__);
2027                 ret = -ENODEV;
2028                 goto err_reg_vbi_dev;
2029         }
2030 #endif
2031
2032         dprintk(1, "%s completed!\n", __func__);
2033
2034         return 0;
2035
2036 err_reg_vbi_dev:
2037         video_unregister_device(&dev->vdev);
2038 err_reg_vdev:
2039         vb2_queue_release(&dev->vb_vidq);
2040         vb2_queue_release(&dev->vb_vbiq);
2041         return ret;
2042 }
2043