11316f2f2e421dc4b3c91f5ddfc987a6319ea9f3
[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  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20  * 02110-1301, USA.
21  */
22
23 /* Developer Notes:
24  *
25  * VBI support is not yet working
26  * The hardware scaler supported is unimplemented
27  * AC97 audio support is unimplemented (only i2s audio mode)
28  *
29  */
30
31 #include <linux/module.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/device.h>
35 #include <linux/suspend.h>
36 #include <media/v4l2-common.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-chip-ident.h>
39 #include <media/tuner.h>
40 #include "au0828.h"
41 #include "au0828-reg.h"
42
43 static DEFINE_MUTEX(au0828_sysfs_lock);
44
45 /* ------------------------------------------------------------------
46         Videobuf operations
47    ------------------------------------------------------------------*/
48
49 static unsigned int isoc_debug;
50 module_param(isoc_debug, int, 0644);
51 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
52
53 #define au0828_isocdbg(fmt, arg...) \
54 do {\
55         if (isoc_debug) { \
56                 printk(KERN_INFO "au0828 %s :"fmt, \
57                        __func__ , ##arg);          \
58         } \
59   } while (0)
60
61 static inline void print_err_status(struct au0828_dev *dev,
62                                     int packet, int status)
63 {
64         char *errmsg = "Unknown";
65
66         switch (status) {
67         case -ENOENT:
68                 errmsg = "unlinked synchronuously";
69                 break;
70         case -ECONNRESET:
71                 errmsg = "unlinked asynchronuously";
72                 break;
73         case -ENOSR:
74                 errmsg = "Buffer error (overrun)";
75                 break;
76         case -EPIPE:
77                 errmsg = "Stalled (device not responding)";
78                 break;
79         case -EOVERFLOW:
80                 errmsg = "Babble (bad cable?)";
81                 break;
82         case -EPROTO:
83                 errmsg = "Bit-stuff error (bad cable?)";
84                 break;
85         case -EILSEQ:
86                 errmsg = "CRC/Timeout (could be anything)";
87                 break;
88         case -ETIME:
89                 errmsg = "Device does not respond";
90                 break;
91         }
92         if (packet < 0) {
93                 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
94         } else {
95                 au0828_isocdbg("URB packet %d, status %d [%s].\n",
96                                packet, status, errmsg);
97         }
98 }
99
100 static int check_dev(struct au0828_dev *dev)
101 {
102         if (dev->dev_state & DEV_DISCONNECTED) {
103                 printk(KERN_INFO "v4l2 ioctl: device not present\n");
104                 return -ENODEV;
105         }
106
107         if (dev->dev_state & DEV_MISCONFIGURED) {
108                 printk(KERN_INFO "v4l2 ioctl: device is misconfigured; "
109                        "close and open it again\n");
110                 return -EIO;
111         }
112         return 0;
113 }
114
115 /*
116  * IRQ callback, called by URB callback
117  */
118 static void au0828_irq_callback(struct urb *urb)
119 {
120         struct au0828_dmaqueue  *dma_q = urb->context;
121         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
122         unsigned long flags = 0;
123         int i;
124
125         switch (urb->status) {
126         case 0:             /* success */
127         case -ETIMEDOUT:    /* NAK */
128                 break;
129         case -ECONNRESET:   /* kill */
130         case -ENOENT:
131         case -ESHUTDOWN:
132                 au0828_isocdbg("au0828_irq_callback called: status kill\n");
133                 return;
134         default:            /* unknown error */
135                 au0828_isocdbg("urb completition error %d.\n", urb->status);
136                 break;
137         }
138
139         /* Copy data from URB */
140         spin_lock_irqsave(&dev->slock, flags);
141         dev->isoc_ctl.isoc_copy(dev, urb);
142         spin_unlock_irqrestore(&dev->slock, flags);
143
144         /* Reset urb buffers */
145         for (i = 0; i < urb->number_of_packets; i++) {
146                 urb->iso_frame_desc[i].status = 0;
147                 urb->iso_frame_desc[i].actual_length = 0;
148         }
149         urb->status = 0;
150
151         urb->status = usb_submit_urb(urb, GFP_ATOMIC);
152         if (urb->status) {
153                 au0828_isocdbg("urb resubmit failed (error=%i)\n",
154                                urb->status);
155         }
156 }
157
158 /*
159  * Stop and Deallocate URBs
160  */
161 static void au0828_uninit_isoc(struct au0828_dev *dev)
162 {
163         struct urb *urb;
164         int i;
165
166         au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
167
168         dev->isoc_ctl.nfields = -1;
169         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
170                 urb = dev->isoc_ctl.urb[i];
171                 if (urb) {
172                         if (!irqs_disabled())
173                                 usb_kill_urb(urb);
174                         else
175                                 usb_unlink_urb(urb);
176
177                         if (dev->isoc_ctl.transfer_buffer[i]) {
178                                 usb_free_coherent(dev->usbdev,
179                                         urb->transfer_buffer_length,
180                                         dev->isoc_ctl.transfer_buffer[i],
181                                         urb->transfer_dma);
182                         }
183                         usb_free_urb(urb);
184                         dev->isoc_ctl.urb[i] = NULL;
185                 }
186                 dev->isoc_ctl.transfer_buffer[i] = NULL;
187         }
188
189         kfree(dev->isoc_ctl.urb);
190         kfree(dev->isoc_ctl.transfer_buffer);
191
192         dev->isoc_ctl.urb = NULL;
193         dev->isoc_ctl.transfer_buffer = NULL;
194         dev->isoc_ctl.num_bufs = 0;
195 }
196
197 /*
198  * Allocate URBs and start IRQ
199  */
200 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
201                             int num_bufs, int max_pkt_size,
202                             int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
203 {
204         struct au0828_dmaqueue *dma_q = &dev->vidq;
205         int i;
206         int sb_size, pipe;
207         struct urb *urb;
208         int j, k;
209         int rc;
210
211         au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
212
213         /* De-allocates all pending stuff */
214         au0828_uninit_isoc(dev);
215
216         dev->isoc_ctl.isoc_copy = isoc_copy;
217         dev->isoc_ctl.num_bufs = num_bufs;
218
219         dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);
220         if (!dev->isoc_ctl.urb) {
221                 au0828_isocdbg("cannot alloc memory for usb buffers\n");
222                 return -ENOMEM;
223         }
224
225         dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
226                                               GFP_KERNEL);
227         if (!dev->isoc_ctl.transfer_buffer) {
228                 au0828_isocdbg("cannot allocate memory for usb transfer\n");
229                 kfree(dev->isoc_ctl.urb);
230                 return -ENOMEM;
231         }
232
233         dev->isoc_ctl.max_pkt_size = max_pkt_size;
234         dev->isoc_ctl.buf = NULL;
235
236         sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
237
238         /* allocate urbs and transfer buffers */
239         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
240                 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
241                 if (!urb) {
242                         au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
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"
252                                         " buffer %i%s\n",
253                                         sb_size, i,
254                                         in_interrupt() ? " while in int" : "");
255                         au0828_uninit_isoc(dev);
256                         return -ENOMEM;
257                 }
258                 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
259
260                 pipe = usb_rcvisocpipe(dev->usbdev,
261                                        dev->isoc_in_endpointaddr),
262
263                 usb_fill_int_urb(urb, dev->usbdev, pipe,
264                                  dev->isoc_ctl.transfer_buffer[i], sb_size,
265                                  au0828_irq_callback, dma_q, 1);
266
267                 urb->number_of_packets = max_packets;
268                 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
269
270                 k = 0;
271                 for (j = 0; j < max_packets; j++) {
272                         urb->iso_frame_desc[j].offset = k;
273                         urb->iso_frame_desc[j].length =
274                                                 dev->isoc_ctl.max_pkt_size;
275                         k += dev->isoc_ctl.max_pkt_size;
276                 }
277         }
278
279         init_waitqueue_head(&dma_q->wq);
280
281         /* submit urbs and enables IRQ */
282         for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
283                 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
284                 if (rc) {
285                         au0828_isocdbg("submit of urb %i failed (error=%i)\n",
286                                        i, rc);
287                         au0828_uninit_isoc(dev);
288                         return rc;
289                 }
290         }
291
292         return 0;
293 }
294
295 /*
296  * Announces that a buffer were filled and request the next
297  */
298 static inline void buffer_filled(struct au0828_dev *dev,
299                                   struct au0828_dmaqueue *dma_q,
300                                   struct au0828_buffer *buf)
301 {
302         /* Advice that buffer was filled */
303         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
304
305         buf->vb.state = VIDEOBUF_DONE;
306         buf->vb.field_count++;
307         v4l2_get_timestamp(&buf->vb.ts);
308
309         dev->isoc_ctl.buf = NULL;
310
311         list_del(&buf->vb.queue);
312         wake_up(&buf->vb.done);
313 }
314
315 static inline void vbi_buffer_filled(struct au0828_dev *dev,
316                                      struct au0828_dmaqueue *dma_q,
317                                      struct au0828_buffer *buf)
318 {
319         /* Advice that buffer was filled */
320         au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
321
322         buf->vb.state = VIDEOBUF_DONE;
323         buf->vb.field_count++;
324         v4l2_get_timestamp(&buf->vb.ts);
325
326         dev->isoc_ctl.vbi_buf = NULL;
327
328         list_del(&buf->vb.queue);
329         wake_up(&buf->vb.done);
330 }
331
332 /*
333  * Identify the buffer header type and properly handles
334  */
335 static void au0828_copy_video(struct au0828_dev *dev,
336                               struct au0828_dmaqueue  *dma_q,
337                               struct au0828_buffer *buf,
338                               unsigned char *p,
339                               unsigned char *outp, unsigned long len)
340 {
341         void *fieldstart, *startwrite, *startread;
342         int  linesdone, currlinedone, offset, lencopy, remain;
343         int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
344
345         if (len == 0)
346                 return;
347
348         if (dma_q->pos + len > buf->vb.size)
349                 len = buf->vb.size - dma_q->pos;
350
351         startread = p;
352         remain = len;
353
354         /* Interlaces frame */
355         if (buf->top_field)
356                 fieldstart = outp;
357         else
358                 fieldstart = outp + bytesperline;
359
360         linesdone = dma_q->pos / bytesperline;
361         currlinedone = dma_q->pos % bytesperline;
362         offset = linesdone * bytesperline * 2 + currlinedone;
363         startwrite = fieldstart + offset;
364         lencopy = bytesperline - currlinedone;
365         lencopy = lencopy > remain ? remain : lencopy;
366
367         if ((char *)startwrite + lencopy > (char *)outp + buf->vb.size) {
368                 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
369                                ((char *)startwrite + lencopy) -
370                                ((char *)outp + buf->vb.size));
371                 remain = (char *)outp + buf->vb.size - (char *)startwrite;
372                 lencopy = remain;
373         }
374         if (lencopy <= 0)
375                 return;
376         memcpy(startwrite, startread, lencopy);
377
378         remain -= lencopy;
379
380         while (remain > 0) {
381                 startwrite += lencopy + bytesperline;
382                 startread += lencopy;
383                 if (bytesperline > remain)
384                         lencopy = remain;
385                 else
386                         lencopy = bytesperline;
387
388                 if ((char *)startwrite + lencopy > (char *)outp +
389                     buf->vb.size) {
390                         au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
391                                        ((char *)startwrite + lencopy) -
392                                        ((char *)outp + buf->vb.size));
393                         lencopy = remain = (char *)outp + buf->vb.size -
394                                            (char *)startwrite;
395                 }
396                 if (lencopy <= 0)
397                         break;
398
399                 memcpy(startwrite, startread, lencopy);
400
401                 remain -= lencopy;
402         }
403
404         if (offset > 1440) {
405                 /* We have enough data to check for greenscreen */
406                 if (outp[0] < 0x60 && outp[1440] < 0x60)
407                         dev->greenscreen_detected = 1;
408         }
409
410         dma_q->pos += len;
411 }
412
413 /*
414  * video-buf generic routine to get the next available buffer
415  */
416 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
417                                 struct au0828_buffer **buf)
418 {
419         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
420
421         if (list_empty(&dma_q->active)) {
422                 au0828_isocdbg("No active queue to serve\n");
423                 dev->isoc_ctl.buf = NULL;
424                 *buf = NULL;
425                 return;
426         }
427
428         /* Get the next buffer */
429         *buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue);
430         dev->isoc_ctl.buf = *buf;
431
432         return;
433 }
434
435 static void au0828_copy_vbi(struct au0828_dev *dev,
436                               struct au0828_dmaqueue  *dma_q,
437                               struct au0828_buffer *buf,
438                               unsigned char *p,
439                               unsigned char *outp, unsigned long len)
440 {
441         unsigned char *startwrite, *startread;
442         int bytesperline;
443         int i, j = 0;
444
445         if (dev == NULL) {
446                 au0828_isocdbg("dev is null\n");
447                 return;
448         }
449
450         if (dma_q == NULL) {
451                 au0828_isocdbg("dma_q is null\n");
452                 return;
453         }
454         if (buf == NULL)
455                 return;
456         if (p == NULL) {
457                 au0828_isocdbg("p is null\n");
458                 return;
459         }
460         if (outp == NULL) {
461                 au0828_isocdbg("outp is null\n");
462                 return;
463         }
464
465         bytesperline = dev->vbi_width;
466
467         if (dma_q->pos + len > buf->vb.size)
468                 len = buf->vb.size - dma_q->pos;
469
470         startread = p;
471         startwrite = outp + (dma_q->pos / 2);
472
473         /* Make sure the bottom field populates the second half of the frame */
474         if (buf->top_field == 0)
475                 startwrite += bytesperline * dev->vbi_height;
476
477         for (i = 0; i < len; i += 2)
478                 startwrite[j++] = startread[i+1];
479
480         dma_q->pos += len;
481 }
482
483
484 /*
485  * video-buf generic routine to get the next available VBI buffer
486  */
487 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
488                                     struct au0828_buffer **buf)
489 {
490         struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
491         char *outp;
492
493         if (list_empty(&dma_q->active)) {
494                 au0828_isocdbg("No active queue to serve\n");
495                 dev->isoc_ctl.vbi_buf = NULL;
496                 *buf = NULL;
497                 return;
498         }
499
500         /* Get the next buffer */
501         *buf = list_entry(dma_q->active.next, struct au0828_buffer, vb.queue);
502         /* Cleans up buffer - Useful for testing for frame/URB loss */
503         outp = videobuf_to_vmalloc(&(*buf)->vb);
504         memset(outp, 0x00, (*buf)->vb.size);
505
506         dev->isoc_ctl.vbi_buf = *buf;
507
508         return;
509 }
510
511 /*
512  * Controls the isoc copy of each urb packet
513  */
514 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
515 {
516         struct au0828_buffer    *buf;
517         struct au0828_buffer    *vbi_buf;
518         struct au0828_dmaqueue  *dma_q = urb->context;
519         struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
520         unsigned char *outp = NULL;
521         unsigned char *vbioutp = NULL;
522         int i, len = 0, rc = 1;
523         unsigned char *p;
524         unsigned char fbyte;
525         unsigned int vbi_field_size;
526         unsigned int remain, lencopy;
527
528         if (!dev)
529                 return 0;
530
531         if ((dev->dev_state & DEV_DISCONNECTED) ||
532             (dev->dev_state & DEV_MISCONFIGURED))
533                 return 0;
534
535         if (urb->status < 0) {
536                 print_err_status(dev, -1, urb->status);
537                 if (urb->status == -ENOENT)
538                         return 0;
539         }
540
541         buf = dev->isoc_ctl.buf;
542         if (buf != NULL)
543                 outp = videobuf_to_vmalloc(&buf->vb);
544
545         vbi_buf = dev->isoc_ctl.vbi_buf;
546         if (vbi_buf != NULL)
547                 vbioutp = videobuf_to_vmalloc(&vbi_buf->vb);
548
549         for (i = 0; i < urb->number_of_packets; i++) {
550                 int status = urb->iso_frame_desc[i].status;
551
552                 if (status < 0) {
553                         print_err_status(dev, i, status);
554                         if (urb->iso_frame_desc[i].status != -EPROTO)
555                                 continue;
556                 }
557
558                 if (urb->iso_frame_desc[i].actual_length <= 0)
559                         continue;
560
561                 if (urb->iso_frame_desc[i].actual_length >
562                                                 dev->max_pkt_size) {
563                         au0828_isocdbg("packet bigger than packet size");
564                         continue;
565                 }
566
567                 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
568                 fbyte = p[0];
569                 len = urb->iso_frame_desc[i].actual_length - 4;
570                 p += 4;
571
572                 if (fbyte & 0x80) {
573                         len -= 4;
574                         p += 4;
575                         au0828_isocdbg("Video frame %s\n",
576                                        (fbyte & 0x40) ? "odd" : "even");
577                         if (fbyte & 0x40) {
578                                 /* VBI */
579                                 if (vbi_buf != NULL)
580                                         vbi_buffer_filled(dev,
581                                                           vbi_dma_q,
582                                                           vbi_buf);
583                                 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
584                                 if (vbi_buf == NULL)
585                                         vbioutp = NULL;
586                                 else
587                                         vbioutp = videobuf_to_vmalloc(
588                                                 &vbi_buf->vb);
589
590                                 /* Video */
591                                 if (buf != NULL)
592                                         buffer_filled(dev, dma_q, buf);
593                                 get_next_buf(dma_q, &buf);
594                                 if (buf == NULL)
595                                         outp = NULL;
596                                 else
597                                         outp = videobuf_to_vmalloc(&buf->vb);
598
599                                 /* As long as isoc traffic is arriving, keep
600                                    resetting the timer */
601                                 if (dev->vid_timeout_running)
602                                         mod_timer(&dev->vid_timeout,
603                                                   jiffies + (HZ / 10));
604                                 if (dev->vbi_timeout_running)
605                                         mod_timer(&dev->vbi_timeout,
606                                                   jiffies + (HZ / 10));
607                         }
608
609                         if (buf != NULL) {
610                                 if (fbyte & 0x40)
611                                         buf->top_field = 1;
612                                 else
613                                         buf->top_field = 0;
614                         }
615
616                         if (vbi_buf != NULL) {
617                                 if (fbyte & 0x40)
618                                         vbi_buf->top_field = 1;
619                                 else
620                                         vbi_buf->top_field = 0;
621                         }
622
623                         dev->vbi_read = 0;
624                         vbi_dma_q->pos = 0;
625                         dma_q->pos = 0;
626                 }
627
628                 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
629                 if (dev->vbi_read < vbi_field_size) {
630                         remain  = vbi_field_size - dev->vbi_read;
631                         if (len < remain)
632                                 lencopy = len;
633                         else
634                                 lencopy = remain;
635
636                         if (vbi_buf != NULL)
637                                 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
638                                                 vbioutp, len);
639
640                         len -= lencopy;
641                         p += lencopy;
642                         dev->vbi_read += lencopy;
643                 }
644
645                 if (dev->vbi_read >= vbi_field_size && buf != NULL)
646                         au0828_copy_video(dev, dma_q, buf, p, outp, len);
647         }
648         return rc;
649 }
650
651 static int
652 buffer_setup(struct videobuf_queue *vq, unsigned int *count,
653              unsigned int *size)
654 {
655         struct au0828_fh *fh = vq->priv_data;
656         *size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
657
658         if (0 == *count)
659                 *count = AU0828_DEF_BUF;
660
661         if (*count < AU0828_MIN_BUF)
662                 *count = AU0828_MIN_BUF;
663         return 0;
664 }
665
666 /* This is called *without* dev->slock held; please keep it that way */
667 static void free_buffer(struct videobuf_queue *vq, struct au0828_buffer *buf)
668 {
669         struct au0828_fh     *fh  = vq->priv_data;
670         struct au0828_dev    *dev = fh->dev;
671         unsigned long flags = 0;
672         if (in_interrupt())
673                 BUG();
674
675         /* We used to wait for the buffer to finish here, but this didn't work
676            because, as we were keeping the state as VIDEOBUF_QUEUED,
677            videobuf_queue_cancel marked it as finished for us.
678            (Also, it could wedge forever if the hardware was misconfigured.)
679
680            This should be safe; by the time we get here, the buffer isn't
681            queued anymore. If we ever start marking the buffers as
682            VIDEOBUF_ACTIVE, it won't be, though.
683         */
684         spin_lock_irqsave(&dev->slock, flags);
685         if (dev->isoc_ctl.buf == buf)
686                 dev->isoc_ctl.buf = NULL;
687         spin_unlock_irqrestore(&dev->slock, flags);
688
689         videobuf_vmalloc_free(&buf->vb);
690         buf->vb.state = VIDEOBUF_NEEDS_INIT;
691 }
692
693 static int
694 buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
695                                                 enum v4l2_field field)
696 {
697         struct au0828_fh     *fh  = vq->priv_data;
698         struct au0828_buffer *buf = container_of(vb, struct au0828_buffer, vb);
699         struct au0828_dev    *dev = fh->dev;
700         int                  rc = 0, urb_init = 0;
701
702         buf->vb.size = (fh->dev->width * fh->dev->height * 16 + 7) >> 3;
703
704         if (0 != buf->vb.baddr  &&  buf->vb.bsize < buf->vb.size)
705                 return -EINVAL;
706
707         buf->vb.width  = dev->width;
708         buf->vb.height = dev->height;
709         buf->vb.field  = field;
710
711         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
712                 rc = videobuf_iolock(vq, &buf->vb, NULL);
713                 if (rc < 0) {
714                         printk(KERN_INFO "videobuf_iolock failed\n");
715                         goto fail;
716                 }
717         }
718
719         if (!dev->isoc_ctl.num_bufs)
720                 urb_init = 1;
721
722         if (urb_init) {
723                 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
724                                       AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
725                                       au0828_isoc_copy);
726                 if (rc < 0) {
727                         printk(KERN_INFO "au0828_init_isoc failed\n");
728                         goto fail;
729                 }
730         }
731
732         buf->vb.state = VIDEOBUF_PREPARED;
733         return 0;
734
735 fail:
736         free_buffer(vq, buf);
737         return rc;
738 }
739
740 static void
741 buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
742 {
743         struct au0828_buffer    *buf     = container_of(vb,
744                                                         struct au0828_buffer,
745                                                         vb);
746         struct au0828_fh        *fh      = vq->priv_data;
747         struct au0828_dev       *dev     = fh->dev;
748         struct au0828_dmaqueue  *vidq    = &dev->vidq;
749
750         buf->vb.state = VIDEOBUF_QUEUED;
751         list_add_tail(&buf->vb.queue, &vidq->active);
752 }
753
754 static void buffer_release(struct videobuf_queue *vq,
755                                 struct videobuf_buffer *vb)
756 {
757         struct au0828_buffer   *buf  = container_of(vb,
758                                                     struct au0828_buffer,
759                                                     vb);
760
761         free_buffer(vq, buf);
762 }
763
764 static struct videobuf_queue_ops au0828_video_qops = {
765         .buf_setup      = buffer_setup,
766         .buf_prepare    = buffer_prepare,
767         .buf_queue      = buffer_queue,
768         .buf_release    = buffer_release,
769 };
770
771 /* ------------------------------------------------------------------
772    V4L2 interface
773    ------------------------------------------------------------------*/
774
775 static int au0828_i2s_init(struct au0828_dev *dev)
776 {
777         /* Enable i2s mode */
778         au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
779         return 0;
780 }
781
782 /*
783  * Auvitek au0828 analog stream enable
784  * Please set interface0 to AS5 before enable the stream
785  */
786 static int au0828_analog_stream_enable(struct au0828_dev *d)
787 {
788         dprintk(1, "au0828_analog_stream_enable called\n");
789         au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
790         au0828_writereg(d, 0x106, 0x00);
791         /* set x position */
792         au0828_writereg(d, 0x110, 0x00);
793         au0828_writereg(d, 0x111, 0x00);
794         au0828_writereg(d, 0x114, 0xa0);
795         au0828_writereg(d, 0x115, 0x05);
796         /* set y position */
797         au0828_writereg(d, 0x112, 0x00);
798         au0828_writereg(d, 0x113, 0x00);
799         au0828_writereg(d, 0x116, 0xf2);
800         au0828_writereg(d, 0x117, 0x00);
801         au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
802
803         return 0;
804 }
805
806 int au0828_analog_stream_disable(struct au0828_dev *d)
807 {
808         dprintk(1, "au0828_analog_stream_disable called\n");
809         au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
810         return 0;
811 }
812
813 static void au0828_analog_stream_reset(struct au0828_dev *dev)
814 {
815         dprintk(1, "au0828_analog_stream_reset called\n");
816         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
817         mdelay(30);
818         au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
819 }
820
821 /*
822  * Some operations needs to stop current streaming
823  */
824 static int au0828_stream_interrupt(struct au0828_dev *dev)
825 {
826         int ret = 0;
827
828         dev->stream_state = STREAM_INTERRUPT;
829         if (dev->dev_state == DEV_DISCONNECTED)
830                 return -ENODEV;
831         else if (ret) {
832                 dev->dev_state = DEV_MISCONFIGURED;
833                 dprintk(1, "%s device is misconfigured!\n", __func__);
834                 return ret;
835         }
836         return 0;
837 }
838
839 /*
840  * au0828_release_resources
841  * unregister v4l2 devices
842  */
843 void au0828_analog_unregister(struct au0828_dev *dev)
844 {
845         dprintk(1, "au0828_release_resources called\n");
846         mutex_lock(&au0828_sysfs_lock);
847
848         if (dev->vdev)
849                 video_unregister_device(dev->vdev);
850         if (dev->vbi_dev)
851                 video_unregister_device(dev->vbi_dev);
852
853         mutex_unlock(&au0828_sysfs_lock);
854 }
855
856
857 /* Usage lock check functions */
858 static int res_get(struct au0828_fh *fh, unsigned int bit)
859 {
860         struct au0828_dev    *dev = fh->dev;
861
862         if (fh->resources & bit)
863                 /* have it already allocated */
864                 return 1;
865
866         /* is it free? */
867         if (dev->resources & bit) {
868                 /* no, someone else uses it */
869                 return 0;
870         }
871         /* it's free, grab it */
872         fh->resources  |= bit;
873         dev->resources |= bit;
874         dprintk(1, "res: get %d\n", bit);
875
876         return 1;
877 }
878
879 static int res_check(struct au0828_fh *fh, unsigned int bit)
880 {
881         return fh->resources & bit;
882 }
883
884 static int res_locked(struct au0828_dev *dev, unsigned int bit)
885 {
886         return dev->resources & bit;
887 }
888
889 static void res_free(struct au0828_fh *fh, unsigned int bits)
890 {
891         struct au0828_dev    *dev = fh->dev;
892
893         BUG_ON((fh->resources & bits) != bits);
894
895         fh->resources  &= ~bits;
896         dev->resources &= ~bits;
897         dprintk(1, "res: put %d\n", bits);
898 }
899
900 static int get_ressource(struct au0828_fh *fh)
901 {
902         switch (fh->type) {
903         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
904                 return AU0828_RESOURCE_VIDEO;
905         case V4L2_BUF_TYPE_VBI_CAPTURE:
906                 return AU0828_RESOURCE_VBI;
907         default:
908                 BUG();
909                 return 0;
910         }
911 }
912
913 /* This function ensures that video frames continue to be delivered even if
914    the ITU-656 input isn't receiving any data (thereby preventing applications
915    such as tvtime from hanging) */
916 static void au0828_vid_buffer_timeout(unsigned long data)
917 {
918         struct au0828_dev *dev = (struct au0828_dev *) data;
919         struct au0828_dmaqueue *dma_q = &dev->vidq;
920         struct au0828_buffer *buf;
921         unsigned char *vid_data;
922         unsigned long flags = 0;
923
924         spin_lock_irqsave(&dev->slock, flags);
925
926         buf = dev->isoc_ctl.buf;
927         if (buf != NULL) {
928                 vid_data = videobuf_to_vmalloc(&buf->vb);
929                 memset(vid_data, 0x00, buf->vb.size); /* Blank green frame */
930                 buffer_filled(dev, dma_q, buf);
931         }
932         get_next_buf(dma_q, &buf);
933
934         if (dev->vid_timeout_running == 1)
935                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
936
937         spin_unlock_irqrestore(&dev->slock, flags);
938 }
939
940 static void au0828_vbi_buffer_timeout(unsigned long data)
941 {
942         struct au0828_dev *dev = (struct au0828_dev *) data;
943         struct au0828_dmaqueue *dma_q = &dev->vbiq;
944         struct au0828_buffer *buf;
945         unsigned char *vbi_data;
946         unsigned long flags = 0;
947
948         spin_lock_irqsave(&dev->slock, flags);
949
950         buf = dev->isoc_ctl.vbi_buf;
951         if (buf != NULL) {
952                 vbi_data = videobuf_to_vmalloc(&buf->vb);
953                 memset(vbi_data, 0x00, buf->vb.size);
954                 vbi_buffer_filled(dev, dma_q, buf);
955         }
956         vbi_get_next_buf(dma_q, &buf);
957
958         if (dev->vbi_timeout_running == 1)
959                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
960         spin_unlock_irqrestore(&dev->slock, flags);
961 }
962
963
964 static int au0828_v4l2_open(struct file *filp)
965 {
966         int ret = 0;
967         struct video_device *vdev = video_devdata(filp);
968         struct au0828_dev *dev = video_drvdata(filp);
969         struct au0828_fh *fh;
970         int type;
971
972         switch (vdev->vfl_type) {
973         case VFL_TYPE_GRABBER:
974                 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
975                 break;
976         case VFL_TYPE_VBI:
977                 type = V4L2_BUF_TYPE_VBI_CAPTURE;
978                 break;
979         default:
980                 return -EINVAL;
981         }
982
983         fh = kzalloc(sizeof(struct au0828_fh), GFP_KERNEL);
984         if (NULL == fh) {
985                 dprintk(1, "Failed allocate au0828_fh struct!\n");
986                 return -ENOMEM;
987         }
988
989         fh->type = type;
990         fh->dev = dev;
991         filp->private_data = fh;
992
993         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
994                 /* set au0828 interface0 to AS5 here again */
995                 ret = usb_set_interface(dev->usbdev, 0, 5);
996                 if (ret < 0) {
997                         printk(KERN_INFO "Au0828 can't set alternate to 5!\n");
998                         return -EBUSY;
999                 }
1000                 dev->width = NTSC_STD_W;
1001                 dev->height = NTSC_STD_H;
1002                 dev->frame_size = dev->width * dev->height * 2;
1003                 dev->field_size = dev->width * dev->height;
1004                 dev->bytesperline = dev->width * 2;
1005
1006                 au0828_analog_stream_enable(dev);
1007                 au0828_analog_stream_reset(dev);
1008
1009                 /* If we were doing ac97 instead of i2s, it would go here...*/
1010                 au0828_i2s_init(dev);
1011
1012                 dev->stream_state = STREAM_OFF;
1013                 dev->dev_state |= DEV_INITIALIZED;
1014         }
1015
1016         dev->users++;
1017
1018         videobuf_queue_vmalloc_init(&fh->vb_vidq, &au0828_video_qops,
1019                                     NULL, &dev->slock,
1020                                     V4L2_BUF_TYPE_VIDEO_CAPTURE,
1021                                     V4L2_FIELD_INTERLACED,
1022                                     sizeof(struct au0828_buffer), fh,
1023                                     &dev->lock);
1024
1025         /* VBI Setup */
1026         dev->vbi_width = 720;
1027         dev->vbi_height = 1;
1028         videobuf_queue_vmalloc_init(&fh->vb_vbiq, &au0828_vbi_qops,
1029                                     NULL, &dev->slock,
1030                                     V4L2_BUF_TYPE_VBI_CAPTURE,
1031                                     V4L2_FIELD_SEQ_TB,
1032                                     sizeof(struct au0828_buffer), fh,
1033                                     &dev->lock);
1034         return ret;
1035 }
1036
1037 static int au0828_v4l2_close(struct file *filp)
1038 {
1039         int ret;
1040         struct au0828_fh *fh = filp->private_data;
1041         struct au0828_dev *dev = fh->dev;
1042
1043         if (res_check(fh, AU0828_RESOURCE_VIDEO)) {
1044                 /* Cancel timeout thread in case they didn't call streamoff */
1045                 dev->vid_timeout_running = 0;
1046                 del_timer_sync(&dev->vid_timeout);
1047
1048                 videobuf_stop(&fh->vb_vidq);
1049                 res_free(fh, AU0828_RESOURCE_VIDEO);
1050         }
1051
1052         if (res_check(fh, AU0828_RESOURCE_VBI)) {
1053                 /* Cancel timeout thread in case they didn't call streamoff */
1054                 dev->vbi_timeout_running = 0;
1055                 del_timer_sync(&dev->vbi_timeout);
1056
1057                 videobuf_stop(&fh->vb_vbiq);
1058                 res_free(fh, AU0828_RESOURCE_VBI);
1059         }
1060
1061         if (dev->users == 1) {
1062                 if (dev->dev_state & DEV_DISCONNECTED) {
1063                         au0828_analog_unregister(dev);
1064                         kfree(dev);
1065                         return 0;
1066                 }
1067
1068                 au0828_analog_stream_disable(dev);
1069
1070                 au0828_uninit_isoc(dev);
1071
1072                 /* Save some power by putting tuner to sleep */
1073                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
1074
1075                 /* When close the device, set the usb intf0 into alt0 to free
1076                    USB bandwidth */
1077                 ret = usb_set_interface(dev->usbdev, 0, 0);
1078                 if (ret < 0)
1079                         printk(KERN_INFO "Au0828 can't set alternate to 0!\n");
1080         }
1081
1082         videobuf_mmap_free(&fh->vb_vidq);
1083         videobuf_mmap_free(&fh->vb_vbiq);
1084         kfree(fh);
1085         dev->users--;
1086         wake_up_interruptible_nr(&dev->open, 1);
1087         return 0;
1088 }
1089
1090 static ssize_t au0828_v4l2_read(struct file *filp, char __user *buf,
1091                                 size_t count, loff_t *pos)
1092 {
1093         struct au0828_fh *fh = filp->private_data;
1094         struct au0828_dev *dev = fh->dev;
1095         int rc;
1096
1097         rc = check_dev(dev);
1098         if (rc < 0)
1099                 return rc;
1100
1101         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1102                 if (res_locked(dev, AU0828_RESOURCE_VIDEO))
1103                         return -EBUSY;
1104
1105                 return videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
1106                                         filp->f_flags & O_NONBLOCK);
1107         }
1108
1109         if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1110                 if (!res_get(fh, AU0828_RESOURCE_VBI))
1111                         return -EBUSY;
1112
1113                 if (dev->vbi_timeout_running == 0) {
1114                         /* Handle case where caller tries to read without
1115                            calling streamon first */
1116                         dev->vbi_timeout_running = 1;
1117                         mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1118                 }
1119
1120                 return videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
1121                                             filp->f_flags & O_NONBLOCK);
1122         }
1123
1124         return 0;
1125 }
1126
1127 static unsigned int au0828_v4l2_poll(struct file *filp, poll_table *wait)
1128 {
1129         struct au0828_fh *fh = filp->private_data;
1130         struct au0828_dev *dev = fh->dev;
1131         int rc;
1132
1133         rc = check_dev(dev);
1134         if (rc < 0)
1135                 return rc;
1136
1137         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1138                 if (!res_get(fh, AU0828_RESOURCE_VIDEO))
1139                         return POLLERR;
1140                 return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
1141         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1142                 if (!res_get(fh, AU0828_RESOURCE_VBI))
1143                         return POLLERR;
1144                 return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
1145         } else {
1146                 return POLLERR;
1147         }
1148 }
1149
1150 static int au0828_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
1151 {
1152         struct au0828_fh *fh    = filp->private_data;
1153         struct au0828_dev *dev   = fh->dev;
1154         int              rc;
1155
1156         rc = check_dev(dev);
1157         if (rc < 0)
1158                 return rc;
1159
1160         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1161                 rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1162         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1163                 rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
1164
1165         return rc;
1166 }
1167
1168 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1169                              struct v4l2_format *format)
1170 {
1171         int ret;
1172         int width = format->fmt.pix.width;
1173         int height = format->fmt.pix.height;
1174
1175         if (format->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1176                 return -EINVAL;
1177
1178         /* If they are demanding a format other than the one we support,
1179            bail out (tvtime asks for UYVY and then retries with YUYV) */
1180         if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1181                 return -EINVAL;
1182
1183         /* format->fmt.pix.width only support 720 and height 480 */
1184         if (width != 720)
1185                 width = 720;
1186         if (height != 480)
1187                 height = 480;
1188
1189         format->fmt.pix.width = width;
1190         format->fmt.pix.height = height;
1191         format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1192         format->fmt.pix.bytesperline = width * 2;
1193         format->fmt.pix.sizeimage = width * height * 2;
1194         format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1195         format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1196
1197         if (cmd == VIDIOC_TRY_FMT)
1198                 return 0;
1199
1200         /* maybe set new image format, driver current only support 720*480 */
1201         dev->width = width;
1202         dev->height = height;
1203         dev->frame_size = width * height * 2;
1204         dev->field_size = width * height;
1205         dev->bytesperline = width * 2;
1206
1207         if (dev->stream_state == STREAM_ON) {
1208                 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1209                 ret = au0828_stream_interrupt(dev);
1210                 if (ret != 0) {
1211                         dprintk(1, "error interrupting video stream!\n");
1212                         return ret;
1213                 }
1214         }
1215
1216         /* set au0828 interface0 to AS5 here again */
1217         ret = usb_set_interface(dev->usbdev, 0, 5);
1218         if (ret < 0) {
1219                 printk(KERN_INFO "Au0828 can't set alt setting to 5!\n");
1220                 return -EBUSY;
1221         }
1222
1223         au0828_analog_stream_enable(dev);
1224
1225         return 0;
1226 }
1227
1228
1229 static int vidioc_queryctrl(struct file *file, void *priv,
1230                             struct v4l2_queryctrl *qc)
1231 {
1232         struct au0828_fh *fh = priv;
1233         struct au0828_dev *dev = fh->dev;
1234         v4l2_device_call_all(&dev->v4l2_dev, 0, core, queryctrl, qc);
1235         if (qc->type)
1236                 return 0;
1237         else
1238                 return -EINVAL;
1239 }
1240
1241 static int vidioc_querycap(struct file *file, void  *priv,
1242                            struct v4l2_capability *cap)
1243 {
1244         struct au0828_fh *fh  = priv;
1245         struct au0828_dev *dev = fh->dev;
1246
1247         strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1248         strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1249         strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
1250
1251         /*set the device capabilities */
1252         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
1253                 V4L2_CAP_VBI_CAPTURE |
1254                 V4L2_CAP_AUDIO |
1255                 V4L2_CAP_READWRITE |
1256                 V4L2_CAP_STREAMING |
1257                 V4L2_CAP_TUNER;
1258         return 0;
1259 }
1260
1261 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1262                                         struct v4l2_fmtdesc *f)
1263 {
1264         if (f->index)
1265                 return -EINVAL;
1266
1267         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1268         strcpy(f->description, "Packed YUV2");
1269
1270         f->flags = 0;
1271         f->pixelformat = V4L2_PIX_FMT_UYVY;
1272
1273         return 0;
1274 }
1275
1276 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1277                                         struct v4l2_format *f)
1278 {
1279         struct au0828_fh *fh  = priv;
1280         struct au0828_dev *dev = fh->dev;
1281
1282         f->fmt.pix.width = dev->width;
1283         f->fmt.pix.height = dev->height;
1284         f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1285         f->fmt.pix.bytesperline = dev->bytesperline;
1286         f->fmt.pix.sizeimage = dev->frame_size;
1287         f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1288         f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1289         return 0;
1290 }
1291
1292 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1293                                   struct v4l2_format *f)
1294 {
1295         struct au0828_fh *fh  = priv;
1296         struct au0828_dev *dev = fh->dev;
1297
1298         return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1299 }
1300
1301 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1302                                 struct v4l2_format *f)
1303 {
1304         struct au0828_fh *fh  = priv;
1305         struct au0828_dev *dev = fh->dev;
1306         int rc;
1307
1308         rc = check_dev(dev);
1309         if (rc < 0)
1310                 return rc;
1311
1312         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1313                 printk(KERN_INFO "%s queue busy\n", __func__);
1314                 rc = -EBUSY;
1315                 goto out;
1316         }
1317
1318         rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1319 out:
1320         return rc;
1321 }
1322
1323 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id * norm)
1324 {
1325         struct au0828_fh *fh = priv;
1326         struct au0828_dev *dev = fh->dev;
1327
1328         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1329                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 1);
1330
1331         /* FIXME: when we support something other than NTSC, we are going to
1332            have to make the au0828 bridge adjust the size of its capture
1333            buffer, which is currently hardcoded at 720x480 */
1334
1335         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std, *norm);
1336         dev->std_set_in_tuner_core = 1;
1337
1338         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1339                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 0);
1340
1341         return 0;
1342 }
1343
1344 static int vidioc_enum_input(struct file *file, void *priv,
1345                                 struct v4l2_input *input)
1346 {
1347         struct au0828_fh *fh = priv;
1348         struct au0828_dev *dev = fh->dev;
1349         unsigned int tmp;
1350
1351         static const char *inames[] = {
1352                 [AU0828_VMUX_UNDEFINED] = "Undefined",
1353                 [AU0828_VMUX_COMPOSITE] = "Composite",
1354                 [AU0828_VMUX_SVIDEO] = "S-Video",
1355                 [AU0828_VMUX_CABLE] = "Cable TV",
1356                 [AU0828_VMUX_TELEVISION] = "Television",
1357                 [AU0828_VMUX_DVB] = "DVB",
1358                 [AU0828_VMUX_DEBUG] = "tv debug"
1359         };
1360
1361         tmp = input->index;
1362
1363         if (tmp >= AU0828_MAX_INPUT)
1364                 return -EINVAL;
1365         if (AUVI_INPUT(tmp).type == 0)
1366                 return -EINVAL;
1367
1368         input->index = tmp;
1369         strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1370         if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1371             (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE))
1372                 input->type |= V4L2_INPUT_TYPE_TUNER;
1373         else
1374                 input->type |= V4L2_INPUT_TYPE_CAMERA;
1375
1376         input->std = dev->vdev->tvnorms;
1377
1378         return 0;
1379 }
1380
1381 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1382 {
1383         struct au0828_fh *fh = priv;
1384         struct au0828_dev *dev = fh->dev;
1385         *i = dev->ctrl_input;
1386         return 0;
1387 }
1388
1389 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1390 {
1391         struct au0828_fh *fh = priv;
1392         struct au0828_dev *dev = fh->dev;
1393         int i;
1394
1395         dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1396                 index);
1397         if (index >= AU0828_MAX_INPUT)
1398                 return -EINVAL;
1399         if (AUVI_INPUT(index).type == 0)
1400                 return -EINVAL;
1401         dev->ctrl_input = index;
1402
1403         switch (AUVI_INPUT(index).type) {
1404         case AU0828_VMUX_SVIDEO:
1405                 dev->input_type = AU0828_VMUX_SVIDEO;
1406                 break;
1407         case AU0828_VMUX_COMPOSITE:
1408                 dev->input_type = AU0828_VMUX_COMPOSITE;
1409                 break;
1410         case AU0828_VMUX_TELEVISION:
1411                 dev->input_type = AU0828_VMUX_TELEVISION;
1412                 break;
1413         default:
1414                 dprintk(1, "VIDIOC_S_INPUT unknown input type set [%d]\n",
1415                         AUVI_INPUT(index).type);
1416                 break;
1417         }
1418
1419         v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1420                         AUVI_INPUT(index).vmux, 0, 0);
1421
1422         for (i = 0; i < AU0828_MAX_INPUT; i++) {
1423                 int enable = 0;
1424                 if (AUVI_INPUT(i).audio_setup == NULL)
1425                         continue;
1426
1427                 if (i == index)
1428                         enable = 1;
1429                 else
1430                         enable = 0;
1431                 if (enable) {
1432                         (AUVI_INPUT(i).audio_setup)(dev, enable);
1433                 } else {
1434                         /* Make sure we leave it turned on if some
1435                            other input is routed to this callback */
1436                         if ((AUVI_INPUT(i).audio_setup) !=
1437                             ((AUVI_INPUT(index).audio_setup))) {
1438                                 (AUVI_INPUT(i).audio_setup)(dev, enable);
1439                         }
1440                 }
1441         }
1442
1443         v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1444                         AUVI_INPUT(index).amux, 0, 0);
1445         return 0;
1446 }
1447
1448 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1449 {
1450         struct au0828_fh *fh = priv;
1451         struct au0828_dev *dev = fh->dev;
1452         unsigned int index = a->index;
1453
1454         if (a->index > 1)
1455                 return -EINVAL;
1456
1457         index = dev->ctrl_ainput;
1458         if (index == 0)
1459                 strcpy(a->name, "Television");
1460         else
1461                 strcpy(a->name, "Line in");
1462
1463         a->capability = V4L2_AUDCAP_STEREO;
1464         a->index = index;
1465         return 0;
1466 }
1467
1468 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1469 {
1470         struct au0828_fh *fh = priv;
1471         struct au0828_dev *dev = fh->dev;
1472         if (a->index != dev->ctrl_ainput)
1473                 return -EINVAL;
1474         return 0;
1475 }
1476
1477 static int vidioc_g_ctrl(struct file *file, void *priv,
1478                          struct v4l2_control *ctrl)
1479 {
1480         struct au0828_fh *fh = priv;
1481         struct au0828_dev *dev = fh->dev;
1482
1483         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_ctrl, ctrl);
1484         return 0;
1485
1486 }
1487
1488 static int vidioc_s_ctrl(struct file *file, void *priv,
1489                                 struct v4l2_control *ctrl)
1490 {
1491         struct au0828_fh *fh = priv;
1492         struct au0828_dev *dev = fh->dev;
1493         v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_ctrl, ctrl);
1494         return 0;
1495 }
1496
1497 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1498 {
1499         struct au0828_fh *fh = priv;
1500         struct au0828_dev *dev = fh->dev;
1501
1502         if (t->index != 0)
1503                 return -EINVAL;
1504
1505         strcpy(t->name, "Auvitek tuner");
1506         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1507         return 0;
1508 }
1509
1510 static int vidioc_s_tuner(struct file *file, void *priv,
1511                                 const struct v4l2_tuner *t)
1512 {
1513         struct au0828_fh *fh = priv;
1514         struct au0828_dev *dev = fh->dev;
1515
1516         if (t->index != 0)
1517                 return -EINVAL;
1518
1519         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1520                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 1);
1521
1522         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1523
1524         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1525                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 0);
1526
1527         dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1528                 t->afc);
1529
1530         return 0;
1531
1532 }
1533
1534 static int vidioc_g_frequency(struct file *file, void *priv,
1535                                 struct v4l2_frequency *freq)
1536 {
1537         struct au0828_fh *fh = priv;
1538         struct au0828_dev *dev = fh->dev;
1539
1540         freq->type = V4L2_TUNER_ANALOG_TV;
1541         freq->frequency = dev->ctrl_freq;
1542         return 0;
1543 }
1544
1545 static int vidioc_s_frequency(struct file *file, void *priv,
1546                                 const struct v4l2_frequency *freq)
1547 {
1548         struct au0828_fh *fh = priv;
1549         struct au0828_dev *dev = fh->dev;
1550
1551         if (freq->tuner != 0)
1552                 return -EINVAL;
1553         if (freq->type != V4L2_TUNER_ANALOG_TV)
1554                 return -EINVAL;
1555
1556         dev->ctrl_freq = freq->frequency;
1557
1558         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1559                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 1);
1560
1561         if (dev->std_set_in_tuner_core == 0) {
1562           /* If we've never sent the standard in tuner core, do so now.  We
1563              don't do this at device probe because we don't want to incur
1564              the cost of a firmware load */
1565           v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std,
1566                                dev->vdev->tvnorms);
1567           dev->std_set_in_tuner_core = 1;
1568         }
1569
1570         v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1571
1572         if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
1573                 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, 0);
1574
1575         au0828_analog_stream_reset(dev);
1576
1577         return 0;
1578 }
1579
1580
1581 /* RAW VBI ioctls */
1582
1583 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1584                                 struct v4l2_format *format)
1585 {
1586         struct au0828_fh      *fh  = priv;
1587         struct au0828_dev     *dev = fh->dev;
1588
1589         format->fmt.vbi.samples_per_line = dev->vbi_width;
1590         format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1591         format->fmt.vbi.offset = 0;
1592         format->fmt.vbi.flags = 0;
1593         format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1594
1595         format->fmt.vbi.count[0] = dev->vbi_height;
1596         format->fmt.vbi.count[1] = dev->vbi_height;
1597         format->fmt.vbi.start[0] = 21;
1598         format->fmt.vbi.start[1] = 284;
1599
1600         return 0;
1601 }
1602
1603 static int vidioc_g_chip_ident(struct file *file, void *priv,
1604                struct v4l2_dbg_chip_ident *chip)
1605 {
1606         struct au0828_fh *fh = priv;
1607         struct au0828_dev *dev = fh->dev;
1608         chip->ident = V4L2_IDENT_NONE;
1609         chip->revision = 0;
1610
1611         if (v4l2_chip_match_host(&chip->match)) {
1612                 chip->ident = V4L2_IDENT_AU0828;
1613                 return 0;
1614         }
1615
1616         v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_chip_ident, chip);
1617         if (chip->ident == V4L2_IDENT_NONE)
1618                 return -EINVAL;
1619
1620         return 0;
1621 }
1622
1623 static int vidioc_cropcap(struct file *file, void *priv,
1624                           struct v4l2_cropcap *cc)
1625 {
1626         struct au0828_fh *fh = priv;
1627         struct au0828_dev *dev = fh->dev;
1628
1629         if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1630                 return -EINVAL;
1631
1632         cc->bounds.left = 0;
1633         cc->bounds.top = 0;
1634         cc->bounds.width = dev->width;
1635         cc->bounds.height = dev->height;
1636
1637         cc->defrect = cc->bounds;
1638
1639         cc->pixelaspect.numerator = 54;
1640         cc->pixelaspect.denominator = 59;
1641
1642         return 0;
1643 }
1644
1645 static int vidioc_streamon(struct file *file, void *priv,
1646                            enum v4l2_buf_type type)
1647 {
1648         struct au0828_fh      *fh  = priv;
1649         struct au0828_dev     *dev = fh->dev;
1650         int                   rc = -EINVAL;
1651
1652         rc = check_dev(dev);
1653         if (rc < 0)
1654                 return rc;
1655
1656         if (unlikely(type != fh->type))
1657                 return -EINVAL;
1658
1659         dprintk(1, "vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
1660                 fh, type, fh->resources, dev->resources);
1661
1662         if (unlikely(!res_get(fh, get_ressource(fh))))
1663                 return -EBUSY;
1664
1665         if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1666                 au0828_analog_stream_enable(dev);
1667                 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
1668         }
1669
1670         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1671                 rc = videobuf_streamon(&fh->vb_vidq);
1672                 dev->vid_timeout_running = 1;
1673                 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1674         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1675                 rc = videobuf_streamon(&fh->vb_vbiq);
1676                 dev->vbi_timeout_running = 1;
1677                 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1678         }
1679
1680         return rc;
1681 }
1682
1683 static int vidioc_streamoff(struct file *file, void *priv,
1684                             enum v4l2_buf_type type)
1685 {
1686         struct au0828_fh      *fh  = priv;
1687         struct au0828_dev     *dev = fh->dev;
1688         int                   rc;
1689         int                   i;
1690
1691         rc = check_dev(dev);
1692         if (rc < 0)
1693                 return rc;
1694
1695         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1696             fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
1697                 return -EINVAL;
1698         if (type != fh->type)
1699                 return -EINVAL;
1700
1701         dprintk(1, "vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
1702                 fh, type, fh->resources, dev->resources);
1703
1704         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1705                 dev->vid_timeout_running = 0;
1706                 del_timer_sync(&dev->vid_timeout);
1707
1708                 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
1709                 rc = au0828_stream_interrupt(dev);
1710                 if (rc != 0)
1711                         return rc;
1712
1713                 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1714                         if (AUVI_INPUT(i).audio_setup == NULL)
1715                                 continue;
1716                         (AUVI_INPUT(i).audio_setup)(dev, 0);
1717                 }
1718
1719                 if (res_check(fh, AU0828_RESOURCE_VIDEO)) {
1720                         videobuf_streamoff(&fh->vb_vidq);
1721                         res_free(fh, AU0828_RESOURCE_VIDEO);
1722                 }
1723         } else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
1724                 dev->vbi_timeout_running = 0;
1725                 del_timer_sync(&dev->vbi_timeout);
1726
1727                 if (res_check(fh, AU0828_RESOURCE_VBI)) {
1728                         videobuf_streamoff(&fh->vb_vbiq);
1729                         res_free(fh, AU0828_RESOURCE_VBI);
1730                 }
1731         }
1732
1733         return 0;
1734 }
1735
1736 #ifdef CONFIG_VIDEO_ADV_DEBUG
1737 static int vidioc_g_register(struct file *file, void *priv,
1738                              struct v4l2_dbg_register *reg)
1739 {
1740         struct au0828_fh *fh = priv;
1741         struct au0828_dev *dev = fh->dev;
1742
1743         switch (reg->match.type) {
1744         case V4L2_CHIP_MATCH_I2C_DRIVER:
1745                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
1746                 return 0;
1747         default:
1748                 if (!v4l2_chip_match_host(&reg->match))
1749                         return -EINVAL;
1750         }
1751
1752         reg->val = au0828_read(dev, reg->reg);
1753         return 0;
1754 }
1755
1756 static int vidioc_s_register(struct file *file, void *priv,
1757                              struct v4l2_dbg_register *reg)
1758 {
1759         struct au0828_fh *fh = priv;
1760         struct au0828_dev *dev = fh->dev;
1761
1762         switch (reg->match.type) {
1763         case V4L2_CHIP_MATCH_I2C_DRIVER:
1764                 v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
1765                 return 0;
1766         default:
1767                 if (!v4l2_chip_match_host(&reg->match))
1768                         return -EINVAL;
1769         }
1770         return au0828_writereg(dev, reg->reg, reg->val);
1771 }
1772 #endif
1773
1774 static int vidioc_reqbufs(struct file *file, void *priv,
1775                           struct v4l2_requestbuffers *rb)
1776 {
1777         struct au0828_fh *fh = priv;
1778         struct au0828_dev *dev = fh->dev;
1779         int rc;
1780
1781         rc = check_dev(dev);
1782         if (rc < 0)
1783                 return rc;
1784
1785         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1786                 rc = videobuf_reqbufs(&fh->vb_vidq, rb);
1787         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1788                 rc = videobuf_reqbufs(&fh->vb_vbiq, rb);
1789
1790         return rc;
1791 }
1792
1793 static int vidioc_querybuf(struct file *file, void *priv,
1794                            struct v4l2_buffer *b)
1795 {
1796         struct au0828_fh *fh = priv;
1797         struct au0828_dev *dev = fh->dev;
1798         int rc;
1799
1800         rc = check_dev(dev);
1801         if (rc < 0)
1802                 return rc;
1803
1804         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1805                 rc = videobuf_querybuf(&fh->vb_vidq, b);
1806         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1807                 rc = videobuf_querybuf(&fh->vb_vbiq, b);
1808
1809         return rc;
1810 }
1811
1812 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1813 {
1814         struct au0828_fh *fh = priv;
1815         struct au0828_dev *dev = fh->dev;
1816         int rc;
1817
1818         rc = check_dev(dev);
1819         if (rc < 0)
1820                 return rc;
1821
1822         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1823                 rc = videobuf_qbuf(&fh->vb_vidq, b);
1824         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1825                 rc = videobuf_qbuf(&fh->vb_vbiq, b);
1826
1827         return rc;
1828 }
1829
1830 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
1831 {
1832         struct au0828_fh *fh = priv;
1833         struct au0828_dev *dev = fh->dev;
1834         int rc;
1835
1836         rc = check_dev(dev);
1837         if (rc < 0)
1838                 return rc;
1839
1840         /* Workaround for a bug in the au0828 hardware design that sometimes
1841            results in the colorspace being inverted */
1842         if (dev->greenscreen_detected == 1) {
1843                 dprintk(1, "Detected green frame.  Resetting stream...\n");
1844                 au0828_analog_stream_reset(dev);
1845                 dev->greenscreen_detected = 0;
1846         }
1847
1848         if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1849                 rc = videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags & O_NONBLOCK);
1850         else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
1851                 rc = videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags & O_NONBLOCK);
1852
1853         return rc;
1854 }
1855
1856 static struct v4l2_file_operations au0828_v4l_fops = {
1857         .owner      = THIS_MODULE,
1858         .open       = au0828_v4l2_open,
1859         .release    = au0828_v4l2_close,
1860         .read       = au0828_v4l2_read,
1861         .poll       = au0828_v4l2_poll,
1862         .mmap       = au0828_v4l2_mmap,
1863         .unlocked_ioctl = video_ioctl2,
1864 };
1865
1866 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1867         .vidioc_querycap            = vidioc_querycap,
1868         .vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1869         .vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1870         .vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1871         .vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1872         .vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1873         .vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1874         .vidioc_g_audio             = vidioc_g_audio,
1875         .vidioc_s_audio             = vidioc_s_audio,
1876         .vidioc_cropcap             = vidioc_cropcap,
1877         .vidioc_reqbufs             = vidioc_reqbufs,
1878         .vidioc_querybuf            = vidioc_querybuf,
1879         .vidioc_qbuf                = vidioc_qbuf,
1880         .vidioc_dqbuf               = vidioc_dqbuf,
1881         .vidioc_s_std               = vidioc_s_std,
1882         .vidioc_enum_input          = vidioc_enum_input,
1883         .vidioc_g_input             = vidioc_g_input,
1884         .vidioc_s_input             = vidioc_s_input,
1885         .vidioc_queryctrl           = vidioc_queryctrl,
1886         .vidioc_g_ctrl              = vidioc_g_ctrl,
1887         .vidioc_s_ctrl              = vidioc_s_ctrl,
1888         .vidioc_streamon            = vidioc_streamon,
1889         .vidioc_streamoff           = vidioc_streamoff,
1890         .vidioc_g_tuner             = vidioc_g_tuner,
1891         .vidioc_s_tuner             = vidioc_s_tuner,
1892         .vidioc_g_frequency         = vidioc_g_frequency,
1893         .vidioc_s_frequency         = vidioc_s_frequency,
1894 #ifdef CONFIG_VIDEO_ADV_DEBUG
1895         .vidioc_g_register          = vidioc_g_register,
1896         .vidioc_s_register          = vidioc_s_register,
1897 #endif
1898         .vidioc_g_chip_ident        = vidioc_g_chip_ident,
1899 };
1900
1901 static const struct video_device au0828_video_template = {
1902         .fops                       = &au0828_v4l_fops,
1903         .release                    = video_device_release,
1904         .ioctl_ops                  = &video_ioctl_ops,
1905         .tvnorms                    = V4L2_STD_NTSC_M,
1906         .current_norm               = V4L2_STD_NTSC_M,
1907 };
1908
1909 /**************************************************************************/
1910
1911 int au0828_analog_register(struct au0828_dev *dev,
1912                            struct usb_interface *interface)
1913 {
1914         int retval = -ENOMEM;
1915         struct usb_host_interface *iface_desc;
1916         struct usb_endpoint_descriptor *endpoint;
1917         int i, ret;
1918
1919         dprintk(1, "au0828_analog_register called!\n");
1920
1921         /* set au0828 usb interface0 to as5 */
1922         retval = usb_set_interface(dev->usbdev,
1923                         interface->cur_altsetting->desc.bInterfaceNumber, 5);
1924         if (retval != 0) {
1925                 printk(KERN_INFO "Failure setting usb interface0 to as5\n");
1926                 return retval;
1927         }
1928
1929         /* Figure out which endpoint has the isoc interface */
1930         iface_desc = interface->cur_altsetting;
1931         for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1932                 endpoint = &iface_desc->endpoint[i].desc;
1933                 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1934                      == USB_DIR_IN) &&
1935                     ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1936                      == USB_ENDPOINT_XFER_ISOC)) {
1937
1938                         /* we find our isoc in endpoint */
1939                         u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1940                         dev->max_pkt_size = (tmp & 0x07ff) *
1941                                 (((tmp & 0x1800) >> 11) + 1);
1942                         dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1943                 }
1944         }
1945         if (!(dev->isoc_in_endpointaddr)) {
1946                 printk(KERN_INFO "Could not locate isoc endpoint\n");
1947                 kfree(dev);
1948                 return -ENODEV;
1949         }
1950
1951         init_waitqueue_head(&dev->open);
1952         spin_lock_init(&dev->slock);
1953
1954         /* init video dma queues */
1955         INIT_LIST_HEAD(&dev->vidq.active);
1956         INIT_LIST_HEAD(&dev->vidq.queued);
1957         INIT_LIST_HEAD(&dev->vbiq.active);
1958         INIT_LIST_HEAD(&dev->vbiq.queued);
1959
1960         dev->vid_timeout.function = au0828_vid_buffer_timeout;
1961         dev->vid_timeout.data = (unsigned long) dev;
1962         init_timer(&dev->vid_timeout);
1963
1964         dev->vbi_timeout.function = au0828_vbi_buffer_timeout;
1965         dev->vbi_timeout.data = (unsigned long) dev;
1966         init_timer(&dev->vbi_timeout);
1967
1968         dev->width = NTSC_STD_W;
1969         dev->height = NTSC_STD_H;
1970         dev->field_size = dev->width * dev->height;
1971         dev->frame_size = dev->field_size << 1;
1972         dev->bytesperline = dev->width << 1;
1973         dev->ctrl_ainput = 0;
1974
1975         /* allocate and fill v4l2 video struct */
1976         dev->vdev = video_device_alloc();
1977         if (NULL == dev->vdev) {
1978                 dprintk(1, "Can't allocate video_device.\n");
1979                 return -ENOMEM;
1980         }
1981
1982         /* allocate the VBI struct */
1983         dev->vbi_dev = video_device_alloc();
1984         if (NULL == dev->vbi_dev) {
1985                 dprintk(1, "Can't allocate vbi_device.\n");
1986                 ret = -ENOMEM;
1987                 goto err_vdev;
1988         }
1989
1990         /* Fill the video capture device struct */
1991         *dev->vdev = au0828_video_template;
1992         dev->vdev->parent = &dev->usbdev->dev;
1993         dev->vdev->lock = &dev->lock;
1994         strcpy(dev->vdev->name, "au0828a video");
1995
1996         /* Setup the VBI device */
1997         *dev->vbi_dev = au0828_video_template;
1998         dev->vbi_dev->parent = &dev->usbdev->dev;
1999         dev->vbi_dev->lock = &dev->lock;
2000         strcpy(dev->vbi_dev->name, "au0828a vbi");
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_vbi_dev;
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_vbi_dev;
2020         }
2021
2022         dprintk(1, "%s completed!\n", __func__);
2023
2024         return 0;
2025
2026 err_vbi_dev:
2027         video_device_release(dev->vbi_dev);
2028 err_vdev:
2029         video_device_release(dev->vdev);
2030         return ret;
2031 }
2032