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Merge remote-tracking branch 'iommu/next'
[deliverable/linux.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 * The hardware scaler supported is unimplemented
26 * AC97 audio support is unimplemented (only i2s audio mode)
27 *
28 */
29
30 #include "au0828.h"
31 #include "au8522.h"
32
33 #include <linux/module.h>
34 #include <linux/slab.h>
35 #include <linux/init.h>
36 #include <linux/device.h>
37 #include <media/v4l2-common.h>
38 #include <media/v4l2-mc.h>
39 #include <media/v4l2-ioctl.h>
40 #include <media/v4l2-event.h>
41 #include <media/tuner.h>
42 #include "au0828-reg.h"
43
44 static DEFINE_MUTEX(au0828_sysfs_lock);
45
46 /* ------------------------------------------------------------------
47 Videobuf operations
48 ------------------------------------------------------------------*/
49
50 static unsigned int isoc_debug;
51 module_param(isoc_debug, int, 0644);
52 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
53
54 #define au0828_isocdbg(fmt, arg...) \
55 do {\
56 if (isoc_debug) { \
57 pr_info("au0828 %s :"fmt, \
58 __func__ , ##arg); \
59 } \
60 } while (0)
61
62 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
63 {
64 if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
65 dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
66 }
67
68 static inline void print_err_status(struct au0828_dev *dev,
69 int packet, int status)
70 {
71 char *errmsg = "Unknown";
72
73 switch (status) {
74 case -ENOENT:
75 errmsg = "unlinked synchronuously";
76 break;
77 case -ECONNRESET:
78 errmsg = "unlinked asynchronuously";
79 break;
80 case -ENOSR:
81 errmsg = "Buffer error (overrun)";
82 break;
83 case -EPIPE:
84 errmsg = "Stalled (device not responding)";
85 break;
86 case -EOVERFLOW:
87 errmsg = "Babble (bad cable?)";
88 break;
89 case -EPROTO:
90 errmsg = "Bit-stuff error (bad cable?)";
91 break;
92 case -EILSEQ:
93 errmsg = "CRC/Timeout (could be anything)";
94 break;
95 case -ETIME:
96 errmsg = "Device does not respond";
97 break;
98 }
99 if (packet < 0) {
100 au0828_isocdbg("URB status %d [%s].\n", status, errmsg);
101 } else {
102 au0828_isocdbg("URB packet %d, status %d [%s].\n",
103 packet, status, errmsg);
104 }
105 }
106
107 static int check_dev(struct au0828_dev *dev)
108 {
109 if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
110 pr_info("v4l2 ioctl: device not present\n");
111 return -ENODEV;
112 }
113
114 if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
115 pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
116 return -EIO;
117 }
118 return 0;
119 }
120
121 /*
122 * IRQ callback, called by URB callback
123 */
124 static void au0828_irq_callback(struct urb *urb)
125 {
126 struct au0828_dmaqueue *dma_q = urb->context;
127 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
128 unsigned long flags = 0;
129 int i;
130
131 switch (urb->status) {
132 case 0: /* success */
133 case -ETIMEDOUT: /* NAK */
134 break;
135 case -ECONNRESET: /* kill */
136 case -ENOENT:
137 case -ESHUTDOWN:
138 au0828_isocdbg("au0828_irq_callback called: status kill\n");
139 return;
140 default: /* unknown error */
141 au0828_isocdbg("urb completition error %d.\n", urb->status);
142 break;
143 }
144
145 /* Copy data from URB */
146 spin_lock_irqsave(&dev->slock, flags);
147 dev->isoc_ctl.isoc_copy(dev, urb);
148 spin_unlock_irqrestore(&dev->slock, flags);
149
150 /* Reset urb buffers */
151 for (i = 0; i < urb->number_of_packets; i++) {
152 urb->iso_frame_desc[i].status = 0;
153 urb->iso_frame_desc[i].actual_length = 0;
154 }
155 urb->status = 0;
156
157 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
158 if (urb->status) {
159 au0828_isocdbg("urb resubmit failed (error=%i)\n",
160 urb->status);
161 }
162 dev->stream_state = STREAM_ON;
163 }
164
165 /*
166 * Stop and Deallocate URBs
167 */
168 static void au0828_uninit_isoc(struct au0828_dev *dev)
169 {
170 struct urb *urb;
171 int i;
172
173 au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
174
175 dev->isoc_ctl.nfields = -1;
176 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
177 urb = dev->isoc_ctl.urb[i];
178 if (urb) {
179 if (!irqs_disabled())
180 usb_kill_urb(urb);
181 else
182 usb_unlink_urb(urb);
183
184 if (dev->isoc_ctl.transfer_buffer[i]) {
185 usb_free_coherent(dev->usbdev,
186 urb->transfer_buffer_length,
187 dev->isoc_ctl.transfer_buffer[i],
188 urb->transfer_dma);
189 }
190 usb_free_urb(urb);
191 dev->isoc_ctl.urb[i] = NULL;
192 }
193 dev->isoc_ctl.transfer_buffer[i] = NULL;
194 }
195
196 kfree(dev->isoc_ctl.urb);
197 kfree(dev->isoc_ctl.transfer_buffer);
198
199 dev->isoc_ctl.urb = NULL;
200 dev->isoc_ctl.transfer_buffer = NULL;
201 dev->isoc_ctl.num_bufs = 0;
202
203 dev->stream_state = STREAM_OFF;
204 }
205
206 /*
207 * Allocate URBs and start IRQ
208 */
209 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
210 int num_bufs, int max_pkt_size,
211 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
212 {
213 struct au0828_dmaqueue *dma_q = &dev->vidq;
214 int i;
215 int sb_size, pipe;
216 struct urb *urb;
217 int j, k;
218 int rc;
219
220 au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
221
222 dev->isoc_ctl.isoc_copy = isoc_copy;
223 dev->isoc_ctl.num_bufs = num_bufs;
224
225 dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
226 if (!dev->isoc_ctl.urb) {
227 au0828_isocdbg("cannot alloc memory for usb buffers\n");
228 return -ENOMEM;
229 }
230
231 dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
232 GFP_KERNEL);
233 if (!dev->isoc_ctl.transfer_buffer) {
234 au0828_isocdbg("cannot allocate memory for usb transfer\n");
235 kfree(dev->isoc_ctl.urb);
236 return -ENOMEM;
237 }
238
239 dev->isoc_ctl.max_pkt_size = max_pkt_size;
240 dev->isoc_ctl.buf = NULL;
241
242 sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
243
244 /* allocate urbs and transfer buffers */
245 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
246 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
247 if (!urb) {
248 au0828_uninit_isoc(dev);
249 return -ENOMEM;
250 }
251 dev->isoc_ctl.urb[i] = urb;
252
253 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
254 sb_size, GFP_KERNEL, &urb->transfer_dma);
255 if (!dev->isoc_ctl.transfer_buffer[i]) {
256 printk("unable to allocate %i bytes for transfer"
257 " buffer %i%s\n",
258 sb_size, i,
259 in_interrupt() ? " while in int" : "");
260 au0828_uninit_isoc(dev);
261 return -ENOMEM;
262 }
263 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
264
265 pipe = usb_rcvisocpipe(dev->usbdev,
266 dev->isoc_in_endpointaddr),
267
268 usb_fill_int_urb(urb, dev->usbdev, pipe,
269 dev->isoc_ctl.transfer_buffer[i], sb_size,
270 au0828_irq_callback, dma_q, 1);
271
272 urb->number_of_packets = max_packets;
273 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
274
275 k = 0;
276 for (j = 0; j < max_packets; j++) {
277 urb->iso_frame_desc[j].offset = k;
278 urb->iso_frame_desc[j].length =
279 dev->isoc_ctl.max_pkt_size;
280 k += dev->isoc_ctl.max_pkt_size;
281 }
282 }
283
284 /* submit urbs and enables IRQ */
285 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
286 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
287 if (rc) {
288 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
289 i, rc);
290 au0828_uninit_isoc(dev);
291 return rc;
292 }
293 }
294
295 return 0;
296 }
297
298 /*
299 * Announces that a buffer were filled and request the next
300 */
301 static inline void buffer_filled(struct au0828_dev *dev,
302 struct au0828_dmaqueue *dma_q,
303 struct au0828_buffer *buf)
304 {
305 struct vb2_v4l2_buffer *vb = &buf->vb;
306 struct vb2_queue *q = vb->vb2_buf.vb2_queue;
307
308 /* Advice that buffer was filled */
309 au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
310
311 if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
312 vb->sequence = dev->frame_count++;
313 else
314 vb->sequence = dev->vbi_frame_count++;
315
316 vb->field = V4L2_FIELD_INTERLACED;
317 vb->vb2_buf.timestamp = ktime_get_ns();
318 vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
319 }
320
321 /*
322 * Identify the buffer header type and properly handles
323 */
324 static void au0828_copy_video(struct au0828_dev *dev,
325 struct au0828_dmaqueue *dma_q,
326 struct au0828_buffer *buf,
327 unsigned char *p,
328 unsigned char *outp, unsigned long len)
329 {
330 void *fieldstart, *startwrite, *startread;
331 int linesdone, currlinedone, offset, lencopy, remain;
332 int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
333
334 if (len == 0)
335 return;
336
337 if (dma_q->pos + len > buf->length)
338 len = buf->length - dma_q->pos;
339
340 startread = p;
341 remain = len;
342
343 /* Interlaces frame */
344 if (buf->top_field)
345 fieldstart = outp;
346 else
347 fieldstart = outp + bytesperline;
348
349 linesdone = dma_q->pos / bytesperline;
350 currlinedone = dma_q->pos % bytesperline;
351 offset = linesdone * bytesperline * 2 + currlinedone;
352 startwrite = fieldstart + offset;
353 lencopy = bytesperline - currlinedone;
354 lencopy = lencopy > remain ? remain : lencopy;
355
356 if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
357 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
358 ((char *)startwrite + lencopy) -
359 ((char *)outp + buf->length));
360 remain = (char *)outp + buf->length - (char *)startwrite;
361 lencopy = remain;
362 }
363 if (lencopy <= 0)
364 return;
365 memcpy(startwrite, startread, lencopy);
366
367 remain -= lencopy;
368
369 while (remain > 0) {
370 startwrite += lencopy + bytesperline;
371 startread += lencopy;
372 if (bytesperline > remain)
373 lencopy = remain;
374 else
375 lencopy = bytesperline;
376
377 if ((char *)startwrite + lencopy > (char *)outp +
378 buf->length) {
379 au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
380 ((char *)startwrite + lencopy) -
381 ((char *)outp + buf->length));
382 lencopy = remain = (char *)outp + buf->length -
383 (char *)startwrite;
384 }
385 if (lencopy <= 0)
386 break;
387
388 memcpy(startwrite, startread, lencopy);
389
390 remain -= lencopy;
391 }
392
393 if (offset > 1440) {
394 /* We have enough data to check for greenscreen */
395 if (outp[0] < 0x60 && outp[1440] < 0x60)
396 dev->greenscreen_detected = 1;
397 }
398
399 dma_q->pos += len;
400 }
401
402 /*
403 * video-buf generic routine to get the next available buffer
404 */
405 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
406 struct au0828_buffer **buf)
407 {
408 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
409
410 if (list_empty(&dma_q->active)) {
411 au0828_isocdbg("No active queue to serve\n");
412 dev->isoc_ctl.buf = NULL;
413 *buf = NULL;
414 return;
415 }
416
417 /* Get the next buffer */
418 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
419 /* Cleans up buffer - Useful for testing for frame/URB loss */
420 list_del(&(*buf)->list);
421 dma_q->pos = 0;
422 (*buf)->vb_buf = (*buf)->mem;
423 dev->isoc_ctl.buf = *buf;
424
425 return;
426 }
427
428 static void au0828_copy_vbi(struct au0828_dev *dev,
429 struct au0828_dmaqueue *dma_q,
430 struct au0828_buffer *buf,
431 unsigned char *p,
432 unsigned char *outp, unsigned long len)
433 {
434 unsigned char *startwrite, *startread;
435 int bytesperline;
436 int i, j = 0;
437
438 if (dev == NULL) {
439 au0828_isocdbg("dev is null\n");
440 return;
441 }
442
443 if (dma_q == NULL) {
444 au0828_isocdbg("dma_q is null\n");
445 return;
446 }
447 if (buf == NULL)
448 return;
449 if (p == NULL) {
450 au0828_isocdbg("p is null\n");
451 return;
452 }
453 if (outp == NULL) {
454 au0828_isocdbg("outp is null\n");
455 return;
456 }
457
458 bytesperline = dev->vbi_width;
459
460 if (dma_q->pos + len > buf->length)
461 len = buf->length - dma_q->pos;
462
463 startread = p;
464 startwrite = outp + (dma_q->pos / 2);
465
466 /* Make sure the bottom field populates the second half of the frame */
467 if (buf->top_field == 0)
468 startwrite += bytesperline * dev->vbi_height;
469
470 for (i = 0; i < len; i += 2)
471 startwrite[j++] = startread[i+1];
472
473 dma_q->pos += len;
474 }
475
476
477 /*
478 * video-buf generic routine to get the next available VBI buffer
479 */
480 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
481 struct au0828_buffer **buf)
482 {
483 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
484
485 if (list_empty(&dma_q->active)) {
486 au0828_isocdbg("No active queue to serve\n");
487 dev->isoc_ctl.vbi_buf = NULL;
488 *buf = NULL;
489 return;
490 }
491
492 /* Get the next buffer */
493 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
494 /* Cleans up buffer - Useful for testing for frame/URB loss */
495 list_del(&(*buf)->list);
496 dma_q->pos = 0;
497 (*buf)->vb_buf = (*buf)->mem;
498 dev->isoc_ctl.vbi_buf = *buf;
499 return;
500 }
501
502 /*
503 * Controls the isoc copy of each urb packet
504 */
505 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
506 {
507 struct au0828_buffer *buf;
508 struct au0828_buffer *vbi_buf;
509 struct au0828_dmaqueue *dma_q = urb->context;
510 struct au0828_dmaqueue *vbi_dma_q = &dev->vbiq;
511 unsigned char *outp = NULL;
512 unsigned char *vbioutp = NULL;
513 int i, len = 0, rc = 1;
514 unsigned char *p;
515 unsigned char fbyte;
516 unsigned int vbi_field_size;
517 unsigned int remain, lencopy;
518
519 if (!dev)
520 return 0;
521
522 if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
523 test_bit(DEV_MISCONFIGURED, &dev->dev_state))
524 return 0;
525
526 if (urb->status < 0) {
527 print_err_status(dev, -1, urb->status);
528 if (urb->status == -ENOENT)
529 return 0;
530 }
531
532 buf = dev->isoc_ctl.buf;
533 if (buf != NULL)
534 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
535
536 vbi_buf = dev->isoc_ctl.vbi_buf;
537 if (vbi_buf != NULL)
538 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
539
540 for (i = 0; i < urb->number_of_packets; i++) {
541 int status = urb->iso_frame_desc[i].status;
542
543 if (status < 0) {
544 print_err_status(dev, i, status);
545 if (urb->iso_frame_desc[i].status != -EPROTO)
546 continue;
547 }
548
549 if (urb->iso_frame_desc[i].actual_length <= 0)
550 continue;
551
552 if (urb->iso_frame_desc[i].actual_length >
553 dev->max_pkt_size) {
554 au0828_isocdbg("packet bigger than packet size");
555 continue;
556 }
557
558 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
559 fbyte = p[0];
560 len = urb->iso_frame_desc[i].actual_length - 4;
561 p += 4;
562
563 if (fbyte & 0x80) {
564 len -= 4;
565 p += 4;
566 au0828_isocdbg("Video frame %s\n",
567 (fbyte & 0x40) ? "odd" : "even");
568 if (fbyte & 0x40) {
569 /* VBI */
570 if (vbi_buf != NULL)
571 buffer_filled(dev, vbi_dma_q, vbi_buf);
572 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
573 if (vbi_buf == NULL)
574 vbioutp = NULL;
575 else
576 vbioutp = vb2_plane_vaddr(
577 &vbi_buf->vb.vb2_buf, 0);
578
579 /* Video */
580 if (buf != NULL)
581 buffer_filled(dev, dma_q, buf);
582 get_next_buf(dma_q, &buf);
583 if (buf == NULL)
584 outp = NULL;
585 else
586 outp = vb2_plane_vaddr(
587 &buf->vb.vb2_buf, 0);
588
589 /* As long as isoc traffic is arriving, keep
590 resetting the timer */
591 if (dev->vid_timeout_running)
592 mod_timer(&dev->vid_timeout,
593 jiffies + (HZ / 10));
594 if (dev->vbi_timeout_running)
595 mod_timer(&dev->vbi_timeout,
596 jiffies + (HZ / 10));
597 }
598
599 if (buf != NULL) {
600 if (fbyte & 0x40)
601 buf->top_field = 1;
602 else
603 buf->top_field = 0;
604 }
605
606 if (vbi_buf != NULL) {
607 if (fbyte & 0x40)
608 vbi_buf->top_field = 1;
609 else
610 vbi_buf->top_field = 0;
611 }
612
613 dev->vbi_read = 0;
614 vbi_dma_q->pos = 0;
615 dma_q->pos = 0;
616 }
617
618 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
619 if (dev->vbi_read < vbi_field_size) {
620 remain = vbi_field_size - dev->vbi_read;
621 if (len < remain)
622 lencopy = len;
623 else
624 lencopy = remain;
625
626 if (vbi_buf != NULL)
627 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
628 vbioutp, len);
629
630 len -= lencopy;
631 p += lencopy;
632 dev->vbi_read += lencopy;
633 }
634
635 if (dev->vbi_read >= vbi_field_size && buf != NULL)
636 au0828_copy_video(dev, dma_q, buf, p, outp, len);
637 }
638 return rc;
639 }
640
641 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
642 {
643 #ifdef CONFIG_MEDIA_CONTROLLER
644 int i;
645
646 for (i = 0; i < AU0828_MAX_INPUT; i++) {
647 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
648 return;
649 media_device_unregister_entity(&dev->input_ent[i]);
650 }
651 #endif
652 }
653
654 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
655 {
656 struct au0828_dev *dev =
657 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
658
659 v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
660 v4l2_device_unregister(&dev->v4l2_dev);
661 au0828_usb_v4l2_media_release(dev);
662 au0828_usb_release(dev);
663 }
664
665 int au0828_v4l2_device_register(struct usb_interface *interface,
666 struct au0828_dev *dev)
667 {
668 int retval;
669
670 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
671 return 0;
672
673 /* Create the v4l2_device */
674 #ifdef CONFIG_MEDIA_CONTROLLER
675 dev->v4l2_dev.mdev = dev->media_dev;
676 #endif
677 retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
678 if (retval) {
679 pr_err("%s() v4l2_device_register failed\n",
680 __func__);
681 return retval;
682 }
683
684 dev->v4l2_dev.release = au0828_usb_v4l2_release;
685
686 /* This control handler will inherit the controls from au8522 */
687 retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
688 if (retval) {
689 pr_err("%s() v4l2_ctrl_handler_init failed\n",
690 __func__);
691 return retval;
692 }
693 dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
694
695 return 0;
696 }
697
698 static int queue_setup(struct vb2_queue *vq,
699 unsigned int *nbuffers, unsigned int *nplanes,
700 unsigned int sizes[], struct device *alloc_devs[])
701 {
702 struct au0828_dev *dev = vb2_get_drv_priv(vq);
703 unsigned long size = dev->height * dev->bytesperline;
704
705 if (*nplanes)
706 return sizes[0] < size ? -EINVAL : 0;
707 *nplanes = 1;
708 sizes[0] = size;
709 return 0;
710 }
711
712 static int
713 buffer_prepare(struct vb2_buffer *vb)
714 {
715 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
716 struct au0828_buffer *buf = container_of(vbuf,
717 struct au0828_buffer, vb);
718 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
719
720 buf->length = dev->height * dev->bytesperline;
721
722 if (vb2_plane_size(vb, 0) < buf->length) {
723 pr_err("%s data will not fit into plane (%lu < %lu)\n",
724 __func__, vb2_plane_size(vb, 0), buf->length);
725 return -EINVAL;
726 }
727 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
728 return 0;
729 }
730
731 static void
732 buffer_queue(struct vb2_buffer *vb)
733 {
734 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
735 struct au0828_buffer *buf = container_of(vbuf,
736 struct au0828_buffer,
737 vb);
738 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
739 struct au0828_dmaqueue *vidq = &dev->vidq;
740 unsigned long flags = 0;
741
742 buf->mem = vb2_plane_vaddr(vb, 0);
743 buf->length = vb2_plane_size(vb, 0);
744
745 spin_lock_irqsave(&dev->slock, flags);
746 list_add_tail(&buf->list, &vidq->active);
747 spin_unlock_irqrestore(&dev->slock, flags);
748 }
749
750 static int au0828_i2s_init(struct au0828_dev *dev)
751 {
752 /* Enable i2s mode */
753 au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
754 return 0;
755 }
756
757 /*
758 * Auvitek au0828 analog stream enable
759 */
760 static int au0828_analog_stream_enable(struct au0828_dev *d)
761 {
762 struct usb_interface *iface;
763 int ret, h, w;
764
765 dprintk(1, "au0828_analog_stream_enable called\n");
766
767 iface = usb_ifnum_to_if(d->usbdev, 0);
768 if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
769 dprintk(1, "Changing intf#0 to alt 5\n");
770 /* set au0828 interface0 to AS5 here again */
771 ret = usb_set_interface(d->usbdev, 0, 5);
772 if (ret < 0) {
773 pr_info("Au0828 can't set alt setting to 5!\n");
774 return -EBUSY;
775 }
776 }
777
778 h = d->height / 2 + 2;
779 w = d->width * 2;
780
781 au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
782 au0828_writereg(d, 0x106, 0x00);
783 /* set x position */
784 au0828_writereg(d, 0x110, 0x00);
785 au0828_writereg(d, 0x111, 0x00);
786 au0828_writereg(d, 0x114, w & 0xff);
787 au0828_writereg(d, 0x115, w >> 8);
788 /* set y position */
789 au0828_writereg(d, 0x112, 0x00);
790 au0828_writereg(d, 0x113, 0x00);
791 au0828_writereg(d, 0x116, h & 0xff);
792 au0828_writereg(d, 0x117, h >> 8);
793 au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
794
795 return 0;
796 }
797
798 static int au0828_analog_stream_disable(struct au0828_dev *d)
799 {
800 dprintk(1, "au0828_analog_stream_disable called\n");
801 au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
802 return 0;
803 }
804
805 static void au0828_analog_stream_reset(struct au0828_dev *dev)
806 {
807 dprintk(1, "au0828_analog_stream_reset called\n");
808 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
809 mdelay(30);
810 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
811 }
812
813 /*
814 * Some operations needs to stop current streaming
815 */
816 static int au0828_stream_interrupt(struct au0828_dev *dev)
817 {
818 int ret = 0;
819
820 dev->stream_state = STREAM_INTERRUPT;
821 if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
822 return -ENODEV;
823 else if (ret) {
824 set_bit(DEV_MISCONFIGURED, &dev->dev_state);
825 dprintk(1, "%s device is misconfigured!\n", __func__);
826 return ret;
827 }
828 return 0;
829 }
830
831 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
832 {
833 struct au0828_dev *dev = vb2_get_drv_priv(vq);
834 int rc = 0;
835
836 dprintk(1, "au0828_start_analog_streaming called %d\n",
837 dev->streaming_users);
838
839 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
840 dev->frame_count = 0;
841 else
842 dev->vbi_frame_count = 0;
843
844 if (dev->streaming_users == 0) {
845 /* If we were doing ac97 instead of i2s, it would go here...*/
846 au0828_i2s_init(dev);
847 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
848 AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
849 au0828_isoc_copy);
850 if (rc < 0) {
851 pr_info("au0828_init_isoc failed\n");
852 return rc;
853 }
854
855 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
856 v4l2_device_call_all(&dev->v4l2_dev, 0, video,
857 s_stream, 1);
858 dev->vid_timeout_running = 1;
859 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
860 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
861 dev->vbi_timeout_running = 1;
862 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
863 }
864 }
865 dev->streaming_users++;
866 return rc;
867 }
868
869 static void au0828_stop_streaming(struct vb2_queue *vq)
870 {
871 struct au0828_dev *dev = vb2_get_drv_priv(vq);
872 struct au0828_dmaqueue *vidq = &dev->vidq;
873 unsigned long flags = 0;
874
875 dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
876
877 if (dev->streaming_users-- == 1)
878 au0828_uninit_isoc(dev);
879
880 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
881 dev->vid_timeout_running = 0;
882 del_timer_sync(&dev->vid_timeout);
883
884 spin_lock_irqsave(&dev->slock, flags);
885 if (dev->isoc_ctl.buf != NULL) {
886 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
887 VB2_BUF_STATE_ERROR);
888 dev->isoc_ctl.buf = NULL;
889 }
890 while (!list_empty(&vidq->active)) {
891 struct au0828_buffer *buf;
892
893 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
894 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
895 list_del(&buf->list);
896 }
897 spin_unlock_irqrestore(&dev->slock, flags);
898 }
899
900 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
901 {
902 struct au0828_dev *dev = vb2_get_drv_priv(vq);
903 struct au0828_dmaqueue *vbiq = &dev->vbiq;
904 unsigned long flags = 0;
905
906 dprintk(1, "au0828_stop_vbi_streaming called %d\n",
907 dev->streaming_users);
908
909 if (dev->streaming_users-- == 1)
910 au0828_uninit_isoc(dev);
911
912 spin_lock_irqsave(&dev->slock, flags);
913 if (dev->isoc_ctl.vbi_buf != NULL) {
914 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
915 VB2_BUF_STATE_ERROR);
916 dev->isoc_ctl.vbi_buf = NULL;
917 }
918 while (!list_empty(&vbiq->active)) {
919 struct au0828_buffer *buf;
920
921 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
922 list_del(&buf->list);
923 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
924 }
925 spin_unlock_irqrestore(&dev->slock, flags);
926
927 dev->vbi_timeout_running = 0;
928 del_timer_sync(&dev->vbi_timeout);
929 }
930
931 static struct vb2_ops au0828_video_qops = {
932 .queue_setup = queue_setup,
933 .buf_prepare = buffer_prepare,
934 .buf_queue = buffer_queue,
935 .start_streaming = au0828_start_analog_streaming,
936 .stop_streaming = au0828_stop_streaming,
937 .wait_prepare = vb2_ops_wait_prepare,
938 .wait_finish = vb2_ops_wait_finish,
939 };
940
941 /* ------------------------------------------------------------------
942 V4L2 interface
943 ------------------------------------------------------------------*/
944 /*
945 * au0828_analog_unregister
946 * unregister v4l2 devices
947 */
948 int au0828_analog_unregister(struct au0828_dev *dev)
949 {
950 dprintk(1, "au0828_analog_unregister called\n");
951
952 /* No analog TV */
953 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
954 return 0;
955
956 mutex_lock(&au0828_sysfs_lock);
957 video_unregister_device(&dev->vdev);
958 video_unregister_device(&dev->vbi_dev);
959 mutex_unlock(&au0828_sysfs_lock);
960
961 v4l2_device_disconnect(&dev->v4l2_dev);
962 v4l2_device_put(&dev->v4l2_dev);
963
964 return 1;
965 }
966
967 /* This function ensures that video frames continue to be delivered even if
968 the ITU-656 input isn't receiving any data (thereby preventing applications
969 such as tvtime from hanging) */
970 static void au0828_vid_buffer_timeout(unsigned long data)
971 {
972 struct au0828_dev *dev = (struct au0828_dev *) data;
973 struct au0828_dmaqueue *dma_q = &dev->vidq;
974 struct au0828_buffer *buf;
975 unsigned char *vid_data;
976 unsigned long flags = 0;
977
978 spin_lock_irqsave(&dev->slock, flags);
979
980 buf = dev->isoc_ctl.buf;
981 if (buf != NULL) {
982 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
983 memset(vid_data, 0x00, buf->length); /* Blank green frame */
984 buffer_filled(dev, dma_q, buf);
985 }
986 get_next_buf(dma_q, &buf);
987
988 if (dev->vid_timeout_running == 1)
989 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
990
991 spin_unlock_irqrestore(&dev->slock, flags);
992 }
993
994 static void au0828_vbi_buffer_timeout(unsigned long data)
995 {
996 struct au0828_dev *dev = (struct au0828_dev *) data;
997 struct au0828_dmaqueue *dma_q = &dev->vbiq;
998 struct au0828_buffer *buf;
999 unsigned char *vbi_data;
1000 unsigned long flags = 0;
1001
1002 spin_lock_irqsave(&dev->slock, flags);
1003
1004 buf = dev->isoc_ctl.vbi_buf;
1005 if (buf != NULL) {
1006 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1007 memset(vbi_data, 0x00, buf->length);
1008 buffer_filled(dev, dma_q, buf);
1009 }
1010 vbi_get_next_buf(dma_q, &buf);
1011
1012 if (dev->vbi_timeout_running == 1)
1013 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1014 spin_unlock_irqrestore(&dev->slock, flags);
1015 }
1016
1017 static int au0828_v4l2_open(struct file *filp)
1018 {
1019 struct au0828_dev *dev = video_drvdata(filp);
1020 int ret;
1021
1022 dprintk(1,
1023 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1024 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1025 dev->streaming_users, dev->users);
1026
1027 if (mutex_lock_interruptible(&dev->lock))
1028 return -ERESTARTSYS;
1029
1030 ret = v4l2_fh_open(filp);
1031 if (ret) {
1032 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1033 __func__, ret);
1034 mutex_unlock(&dev->lock);
1035 return ret;
1036 }
1037
1038 if (dev->users == 0) {
1039 au0828_analog_stream_enable(dev);
1040 au0828_analog_stream_reset(dev);
1041 dev->stream_state = STREAM_OFF;
1042 set_bit(DEV_INITIALIZED, &dev->dev_state);
1043 }
1044 dev->users++;
1045 mutex_unlock(&dev->lock);
1046 return ret;
1047 }
1048
1049 static int au0828_v4l2_close(struct file *filp)
1050 {
1051 int ret;
1052 struct au0828_dev *dev = video_drvdata(filp);
1053 struct video_device *vdev = video_devdata(filp);
1054
1055 dprintk(1,
1056 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1057 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1058 dev->streaming_users, dev->users);
1059
1060 mutex_lock(&dev->lock);
1061 if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1062 /* Cancel timeout thread in case they didn't call streamoff */
1063 dev->vid_timeout_running = 0;
1064 del_timer_sync(&dev->vid_timeout);
1065 } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1066 dev->vbi_timeout_running) {
1067 /* Cancel timeout thread in case they didn't call streamoff */
1068 dev->vbi_timeout_running = 0;
1069 del_timer_sync(&dev->vbi_timeout);
1070 }
1071
1072 if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1073 goto end;
1074
1075 if (dev->users == 1) {
1076 /*
1077 * Avoid putting tuner in sleep if DVB or ALSA are
1078 * streaming.
1079 *
1080 * On most USB devices like au0828 the tuner can
1081 * be safely put in sleep stare here if ALSA isn't
1082 * streaming. Exceptions are some very old USB tuner
1083 * models such as em28xx-based WinTV USB2 which have
1084 * a separate audio output jack. The devices that have
1085 * a separate audio output jack have analog tuners,
1086 * like Philips FM1236. Those devices are always on,
1087 * so the s_power callback are silently ignored.
1088 * So, the current logic here does the following:
1089 * Disable (put tuner to sleep) when
1090 * - ALSA and DVB aren't not streaming;
1091 * - the last V4L2 file handler is closed.
1092 *
1093 * FIXME:
1094 *
1095 * Additionally, this logic could be improved to
1096 * disable the media source if the above conditions
1097 * are met and if the device:
1098 * - doesn't have a separate audio out plug (or
1099 * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1100 *
1101 * Once this additional logic is in place, a callback
1102 * is needed to enable the media source and power on
1103 * the tuner, for radio to work.
1104 */
1105 ret = v4l_enable_media_source(vdev);
1106 if (ret == 0)
1107 v4l2_device_call_all(&dev->v4l2_dev, 0, core,
1108 s_power, 0);
1109 dev->std_set_in_tuner_core = 0;
1110
1111 /* When close the device, set the usb intf0 into alt0 to free
1112 USB bandwidth */
1113 ret = usb_set_interface(dev->usbdev, 0, 0);
1114 if (ret < 0)
1115 pr_info("Au0828 can't set alternate to 0!\n");
1116 }
1117 end:
1118 _vb2_fop_release(filp, NULL);
1119 dev->users--;
1120 mutex_unlock(&dev->lock);
1121 return 0;
1122 }
1123
1124 /* Must be called with dev->lock held */
1125 static void au0828_init_tuner(struct au0828_dev *dev)
1126 {
1127 struct v4l2_frequency f = {
1128 .frequency = dev->ctrl_freq,
1129 .type = V4L2_TUNER_ANALOG_TV,
1130 };
1131
1132 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1133 dev->std_set_in_tuner_core, dev->dev_state);
1134
1135 if (dev->std_set_in_tuner_core)
1136 return;
1137 dev->std_set_in_tuner_core = 1;
1138 i2c_gate_ctrl(dev, 1);
1139 /* If we've never sent the standard in tuner core, do so now.
1140 We don't do this at device probe because we don't want to
1141 incur the cost of a firmware load */
1142 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1143 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1144 i2c_gate_ctrl(dev, 0);
1145 }
1146
1147 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1148 struct v4l2_format *format)
1149 {
1150 int ret;
1151 int width = format->fmt.pix.width;
1152 int height = format->fmt.pix.height;
1153
1154 /* If they are demanding a format other than the one we support,
1155 bail out (tvtime asks for UYVY and then retries with YUYV) */
1156 if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1157 return -EINVAL;
1158
1159 /* format->fmt.pix.width only support 720 and height 480 */
1160 if (width != 720)
1161 width = 720;
1162 if (height != 480)
1163 height = 480;
1164
1165 format->fmt.pix.width = width;
1166 format->fmt.pix.height = height;
1167 format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1168 format->fmt.pix.bytesperline = width * 2;
1169 format->fmt.pix.sizeimage = width * height * 2;
1170 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1171 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1172 format->fmt.pix.priv = 0;
1173
1174 if (cmd == VIDIOC_TRY_FMT)
1175 return 0;
1176
1177 /* maybe set new image format, driver current only support 720*480 */
1178 dev->width = width;
1179 dev->height = height;
1180 dev->frame_size = width * height * 2;
1181 dev->field_size = width * height;
1182 dev->bytesperline = width * 2;
1183
1184 if (dev->stream_state == STREAM_ON) {
1185 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1186 ret = au0828_stream_interrupt(dev);
1187 if (ret != 0) {
1188 dprintk(1, "error interrupting video stream!\n");
1189 return ret;
1190 }
1191 }
1192
1193 au0828_analog_stream_enable(dev);
1194
1195 return 0;
1196 }
1197
1198 static int vidioc_querycap(struct file *file, void *priv,
1199 struct v4l2_capability *cap)
1200 {
1201 struct video_device *vdev = video_devdata(file);
1202 struct au0828_dev *dev = video_drvdata(file);
1203
1204 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1205 dev->std_set_in_tuner_core, dev->dev_state);
1206
1207 strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1208 strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1209 usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1210
1211 /* set the device capabilities */
1212 cap->device_caps = V4L2_CAP_AUDIO |
1213 V4L2_CAP_READWRITE |
1214 V4L2_CAP_STREAMING |
1215 V4L2_CAP_TUNER;
1216 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1217 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1218 else
1219 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1220 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1221 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1222 return 0;
1223 }
1224
1225 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1226 struct v4l2_fmtdesc *f)
1227 {
1228 if (f->index)
1229 return -EINVAL;
1230
1231 dprintk(1, "%s called\n", __func__);
1232
1233 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1234 strcpy(f->description, "Packed YUV2");
1235
1236 f->flags = 0;
1237 f->pixelformat = V4L2_PIX_FMT_UYVY;
1238
1239 return 0;
1240 }
1241
1242 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1243 struct v4l2_format *f)
1244 {
1245 struct au0828_dev *dev = video_drvdata(file);
1246
1247 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1248 dev->std_set_in_tuner_core, dev->dev_state);
1249
1250 f->fmt.pix.width = dev->width;
1251 f->fmt.pix.height = dev->height;
1252 f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1253 f->fmt.pix.bytesperline = dev->bytesperline;
1254 f->fmt.pix.sizeimage = dev->frame_size;
1255 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1256 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1257 f->fmt.pix.priv = 0;
1258 return 0;
1259 }
1260
1261 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1262 struct v4l2_format *f)
1263 {
1264 struct au0828_dev *dev = video_drvdata(file);
1265
1266 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1267 dev->std_set_in_tuner_core, dev->dev_state);
1268
1269 return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1270 }
1271
1272 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1273 struct v4l2_format *f)
1274 {
1275 struct au0828_dev *dev = video_drvdata(file);
1276 int rc;
1277
1278 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1279 dev->std_set_in_tuner_core, dev->dev_state);
1280
1281 rc = check_dev(dev);
1282 if (rc < 0)
1283 return rc;
1284
1285 if (vb2_is_busy(&dev->vb_vidq)) {
1286 pr_info("%s queue busy\n", __func__);
1287 rc = -EBUSY;
1288 goto out;
1289 }
1290
1291 rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1292 out:
1293 return rc;
1294 }
1295
1296 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1297 {
1298 struct au0828_dev *dev = video_drvdata(file);
1299
1300 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1301 dev->std_set_in_tuner_core, dev->dev_state);
1302
1303 if (norm == dev->std)
1304 return 0;
1305
1306 if (dev->streaming_users > 0)
1307 return -EBUSY;
1308
1309 dev->std = norm;
1310
1311 au0828_init_tuner(dev);
1312
1313 i2c_gate_ctrl(dev, 1);
1314
1315 /*
1316 * FIXME: when we support something other than 60Hz standards,
1317 * we are going to have to make the au0828 bridge adjust the size
1318 * of its capture buffer, which is currently hardcoded at 720x480
1319 */
1320
1321 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1322
1323 i2c_gate_ctrl(dev, 0);
1324
1325 return 0;
1326 }
1327
1328 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1329 {
1330 struct au0828_dev *dev = video_drvdata(file);
1331
1332 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1333 dev->std_set_in_tuner_core, dev->dev_state);
1334
1335 *norm = dev->std;
1336 return 0;
1337 }
1338
1339 static int vidioc_enum_input(struct file *file, void *priv,
1340 struct v4l2_input *input)
1341 {
1342 struct au0828_dev *dev = video_drvdata(file);
1343 unsigned int tmp;
1344
1345 static const char *inames[] = {
1346 [AU0828_VMUX_UNDEFINED] = "Undefined",
1347 [AU0828_VMUX_COMPOSITE] = "Composite",
1348 [AU0828_VMUX_SVIDEO] = "S-Video",
1349 [AU0828_VMUX_CABLE] = "Cable TV",
1350 [AU0828_VMUX_TELEVISION] = "Television",
1351 [AU0828_VMUX_DVB] = "DVB",
1352 };
1353
1354 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1355 dev->std_set_in_tuner_core, dev->dev_state);
1356
1357 tmp = input->index;
1358
1359 if (tmp >= AU0828_MAX_INPUT)
1360 return -EINVAL;
1361 if (AUVI_INPUT(tmp).type == 0)
1362 return -EINVAL;
1363
1364 input->index = tmp;
1365 strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1366 if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1367 (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1368 input->type |= V4L2_INPUT_TYPE_TUNER;
1369 input->audioset = 1;
1370 } else {
1371 input->type |= V4L2_INPUT_TYPE_CAMERA;
1372 input->audioset = 2;
1373 }
1374
1375 input->std = dev->vdev.tvnorms;
1376
1377 return 0;
1378 }
1379
1380 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1381 {
1382 struct au0828_dev *dev = video_drvdata(file);
1383
1384 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1385 dev->std_set_in_tuner_core, dev->dev_state);
1386
1387 *i = dev->ctrl_input;
1388 return 0;
1389 }
1390
1391 static void au0828_s_input(struct au0828_dev *dev, int index)
1392 {
1393 int i;
1394
1395 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1396 dev->std_set_in_tuner_core, dev->dev_state);
1397
1398 switch (AUVI_INPUT(index).type) {
1399 case AU0828_VMUX_SVIDEO:
1400 dev->input_type = AU0828_VMUX_SVIDEO;
1401 dev->ctrl_ainput = 1;
1402 break;
1403 case AU0828_VMUX_COMPOSITE:
1404 dev->input_type = AU0828_VMUX_COMPOSITE;
1405 dev->ctrl_ainput = 1;
1406 break;
1407 case AU0828_VMUX_TELEVISION:
1408 dev->input_type = AU0828_VMUX_TELEVISION;
1409 dev->ctrl_ainput = 0;
1410 break;
1411 default:
1412 dprintk(1, "unknown input type set [%d]\n",
1413 AUVI_INPUT(index).type);
1414 return;
1415 }
1416
1417 dev->ctrl_input = index;
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 }
1446
1447 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1448 {
1449 struct au0828_dev *dev = video_drvdata(file);
1450 struct video_device *vfd = video_devdata(file);
1451
1452 dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1453 index);
1454 if (index >= AU0828_MAX_INPUT)
1455 return -EINVAL;
1456 if (AUVI_INPUT(index).type == 0)
1457 return -EINVAL;
1458
1459 if (dev->ctrl_input == index)
1460 return 0;
1461
1462 au0828_s_input(dev, index);
1463
1464 /*
1465 * Input has been changed. Disable the media source
1466 * associated with the old input and enable source
1467 * for the newly set input
1468 */
1469 v4l_disable_media_source(vfd);
1470 return v4l_enable_media_source(vfd);
1471 }
1472
1473 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1474 {
1475 if (a->index > 1)
1476 return -EINVAL;
1477
1478 dprintk(1, "%s called\n", __func__);
1479
1480 if (a->index == 0)
1481 strcpy(a->name, "Television");
1482 else
1483 strcpy(a->name, "Line in");
1484
1485 a->capability = V4L2_AUDCAP_STEREO;
1486 return 0;
1487 }
1488
1489 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1490 {
1491 struct au0828_dev *dev = video_drvdata(file);
1492
1493 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1494 dev->std_set_in_tuner_core, dev->dev_state);
1495
1496 a->index = dev->ctrl_ainput;
1497 if (a->index == 0)
1498 strcpy(a->name, "Television");
1499 else
1500 strcpy(a->name, "Line in");
1501
1502 a->capability = V4L2_AUDCAP_STEREO;
1503 return 0;
1504 }
1505
1506 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1507 {
1508 struct au0828_dev *dev = video_drvdata(file);
1509
1510 if (a->index != dev->ctrl_ainput)
1511 return -EINVAL;
1512
1513 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1514 dev->std_set_in_tuner_core, dev->dev_state);
1515 return 0;
1516 }
1517
1518 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1519 {
1520 struct au0828_dev *dev = video_drvdata(file);
1521 struct video_device *vfd = video_devdata(file);
1522 int ret;
1523
1524 if (t->index != 0)
1525 return -EINVAL;
1526
1527 ret = v4l_enable_media_source(vfd);
1528 if (ret)
1529 return ret;
1530
1531 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1532 dev->std_set_in_tuner_core, dev->dev_state);
1533
1534 strcpy(t->name, "Auvitek tuner");
1535
1536 au0828_init_tuner(dev);
1537 i2c_gate_ctrl(dev, 1);
1538 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1539 i2c_gate_ctrl(dev, 0);
1540 return 0;
1541 }
1542
1543 static int vidioc_s_tuner(struct file *file, void *priv,
1544 const struct v4l2_tuner *t)
1545 {
1546 struct au0828_dev *dev = video_drvdata(file);
1547
1548 if (t->index != 0)
1549 return -EINVAL;
1550
1551 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1552 dev->std_set_in_tuner_core, dev->dev_state);
1553
1554 au0828_init_tuner(dev);
1555 i2c_gate_ctrl(dev, 1);
1556 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1557 i2c_gate_ctrl(dev, 0);
1558
1559 dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1560 t->afc);
1561
1562 return 0;
1563
1564 }
1565
1566 static int vidioc_g_frequency(struct file *file, void *priv,
1567 struct v4l2_frequency *freq)
1568 {
1569 struct au0828_dev *dev = video_drvdata(file);
1570
1571 if (freq->tuner != 0)
1572 return -EINVAL;
1573 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1574 dev->std_set_in_tuner_core, dev->dev_state);
1575 freq->frequency = dev->ctrl_freq;
1576 return 0;
1577 }
1578
1579 static int vidioc_s_frequency(struct file *file, void *priv,
1580 const struct v4l2_frequency *freq)
1581 {
1582 struct au0828_dev *dev = video_drvdata(file);
1583 struct v4l2_frequency new_freq = *freq;
1584
1585 if (freq->tuner != 0)
1586 return -EINVAL;
1587
1588 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1589 dev->std_set_in_tuner_core, dev->dev_state);
1590
1591 au0828_init_tuner(dev);
1592 i2c_gate_ctrl(dev, 1);
1593
1594 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1595 /* Get the actual set (and possibly clamped) frequency */
1596 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1597 dev->ctrl_freq = new_freq.frequency;
1598
1599 i2c_gate_ctrl(dev, 0);
1600
1601 au0828_analog_stream_reset(dev);
1602
1603 return 0;
1604 }
1605
1606
1607 /* RAW VBI ioctls */
1608
1609 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1610 struct v4l2_format *format)
1611 {
1612 struct au0828_dev *dev = video_drvdata(file);
1613
1614 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1615 dev->std_set_in_tuner_core, dev->dev_state);
1616
1617 format->fmt.vbi.samples_per_line = dev->vbi_width;
1618 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1619 format->fmt.vbi.offset = 0;
1620 format->fmt.vbi.flags = 0;
1621 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1622
1623 format->fmt.vbi.count[0] = dev->vbi_height;
1624 format->fmt.vbi.count[1] = dev->vbi_height;
1625 format->fmt.vbi.start[0] = 21;
1626 format->fmt.vbi.start[1] = 284;
1627 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1628
1629 return 0;
1630 }
1631
1632 static int vidioc_cropcap(struct file *file, void *priv,
1633 struct v4l2_cropcap *cc)
1634 {
1635 struct au0828_dev *dev = video_drvdata(file);
1636
1637 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1638 return -EINVAL;
1639
1640 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1641 dev->std_set_in_tuner_core, dev->dev_state);
1642
1643 cc->bounds.left = 0;
1644 cc->bounds.top = 0;
1645 cc->bounds.width = dev->width;
1646 cc->bounds.height = dev->height;
1647
1648 cc->defrect = cc->bounds;
1649
1650 cc->pixelaspect.numerator = 54;
1651 cc->pixelaspect.denominator = 59;
1652
1653 return 0;
1654 }
1655
1656 #ifdef CONFIG_VIDEO_ADV_DEBUG
1657 static int vidioc_g_register(struct file *file, void *priv,
1658 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 reg->val = au0828_read(dev, reg->reg);
1666 reg->size = 1;
1667 return 0;
1668 }
1669
1670 static int vidioc_s_register(struct file *file, void *priv,
1671 const struct v4l2_dbg_register *reg)
1672 {
1673 struct au0828_dev *dev = video_drvdata(file);
1674
1675 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1676 dev->std_set_in_tuner_core, dev->dev_state);
1677
1678 return au0828_writereg(dev, reg->reg, reg->val);
1679 }
1680 #endif
1681
1682 static int vidioc_log_status(struct file *file, void *fh)
1683 {
1684 struct video_device *vdev = video_devdata(file);
1685
1686 dprintk(1, "%s called\n", __func__);
1687
1688 v4l2_ctrl_log_status(file, fh);
1689 v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1690 return 0;
1691 }
1692
1693 void au0828_v4l2_suspend(struct au0828_dev *dev)
1694 {
1695 struct urb *urb;
1696 int i;
1697
1698 pr_info("stopping V4L2\n");
1699
1700 if (dev->stream_state == STREAM_ON) {
1701 pr_info("stopping V4L2 active URBs\n");
1702 au0828_analog_stream_disable(dev);
1703 /* stop urbs */
1704 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1705 urb = dev->isoc_ctl.urb[i];
1706 if (urb) {
1707 if (!irqs_disabled())
1708 usb_kill_urb(urb);
1709 else
1710 usb_unlink_urb(urb);
1711 }
1712 }
1713 }
1714
1715 if (dev->vid_timeout_running)
1716 del_timer_sync(&dev->vid_timeout);
1717 if (dev->vbi_timeout_running)
1718 del_timer_sync(&dev->vbi_timeout);
1719 }
1720
1721 void au0828_v4l2_resume(struct au0828_dev *dev)
1722 {
1723 int i, rc;
1724
1725 pr_info("restarting V4L2\n");
1726
1727 if (dev->stream_state == STREAM_ON) {
1728 au0828_stream_interrupt(dev);
1729 au0828_init_tuner(dev);
1730 }
1731
1732 if (dev->vid_timeout_running)
1733 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1734 if (dev->vbi_timeout_running)
1735 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1736
1737 /* If we were doing ac97 instead of i2s, it would go here...*/
1738 au0828_i2s_init(dev);
1739
1740 au0828_analog_stream_enable(dev);
1741
1742 if (!(dev->stream_state == STREAM_ON)) {
1743 au0828_analog_stream_reset(dev);
1744 /* submit urbs */
1745 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1746 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1747 if (rc) {
1748 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1749 i, rc);
1750 au0828_uninit_isoc(dev);
1751 }
1752 }
1753 }
1754 }
1755
1756 static struct v4l2_file_operations au0828_v4l_fops = {
1757 .owner = THIS_MODULE,
1758 .open = au0828_v4l2_open,
1759 .release = au0828_v4l2_close,
1760 .read = vb2_fop_read,
1761 .poll = vb2_fop_poll,
1762 .mmap = vb2_fop_mmap,
1763 .unlocked_ioctl = video_ioctl2,
1764 };
1765
1766 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1767 .vidioc_querycap = vidioc_querycap,
1768 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1769 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1770 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1771 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1772 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1773 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1774 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1775 .vidioc_enumaudio = vidioc_enumaudio,
1776 .vidioc_g_audio = vidioc_g_audio,
1777 .vidioc_s_audio = vidioc_s_audio,
1778 .vidioc_cropcap = vidioc_cropcap,
1779
1780 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1781 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1782 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1783 .vidioc_querybuf = vb2_ioctl_querybuf,
1784 .vidioc_qbuf = vb2_ioctl_qbuf,
1785 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1786 .vidioc_expbuf = vb2_ioctl_expbuf,
1787
1788 .vidioc_s_std = vidioc_s_std,
1789 .vidioc_g_std = vidioc_g_std,
1790 .vidioc_enum_input = vidioc_enum_input,
1791 .vidioc_g_input = vidioc_g_input,
1792 .vidioc_s_input = vidioc_s_input,
1793
1794 .vidioc_streamon = vb2_ioctl_streamon,
1795 .vidioc_streamoff = vb2_ioctl_streamoff,
1796
1797 .vidioc_g_tuner = vidioc_g_tuner,
1798 .vidioc_s_tuner = vidioc_s_tuner,
1799 .vidioc_g_frequency = vidioc_g_frequency,
1800 .vidioc_s_frequency = vidioc_s_frequency,
1801 #ifdef CONFIG_VIDEO_ADV_DEBUG
1802 .vidioc_g_register = vidioc_g_register,
1803 .vidioc_s_register = vidioc_s_register,
1804 #endif
1805 .vidioc_log_status = vidioc_log_status,
1806 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1807 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1808 };
1809
1810 static const struct video_device au0828_video_template = {
1811 .fops = &au0828_v4l_fops,
1812 .release = video_device_release_empty,
1813 .ioctl_ops = &video_ioctl_ops,
1814 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1815 };
1816
1817 static int au0828_vb2_setup(struct au0828_dev *dev)
1818 {
1819 int rc;
1820 struct vb2_queue *q;
1821
1822 /* Setup Videobuf2 for Video capture */
1823 q = &dev->vb_vidq;
1824 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1825 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1826 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1827 q->drv_priv = dev;
1828 q->buf_struct_size = sizeof(struct au0828_buffer);
1829 q->ops = &au0828_video_qops;
1830 q->mem_ops = &vb2_vmalloc_memops;
1831
1832 rc = vb2_queue_init(q);
1833 if (rc < 0)
1834 return rc;
1835
1836 /* Setup Videobuf2 for VBI capture */
1837 q = &dev->vb_vbiq;
1838 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1839 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1840 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1841 q->drv_priv = dev;
1842 q->buf_struct_size = sizeof(struct au0828_buffer);
1843 q->ops = &au0828_vbi_qops;
1844 q->mem_ops = &vb2_vmalloc_memops;
1845
1846 rc = vb2_queue_init(q);
1847 if (rc < 0)
1848 return rc;
1849
1850 return 0;
1851 }
1852
1853 static void au0828_analog_create_entities(struct au0828_dev *dev)
1854 {
1855 #if defined(CONFIG_MEDIA_CONTROLLER)
1856 static const char * const inames[] = {
1857 [AU0828_VMUX_COMPOSITE] = "Composite",
1858 [AU0828_VMUX_SVIDEO] = "S-Video",
1859 [AU0828_VMUX_CABLE] = "Cable TV",
1860 [AU0828_VMUX_TELEVISION] = "Television",
1861 [AU0828_VMUX_DVB] = "DVB",
1862 };
1863 int ret, i;
1864
1865 /* Initialize Video and VBI pads */
1866 dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1867 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1868 if (ret < 0)
1869 pr_err("failed to initialize video media entity!\n");
1870
1871 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1872 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1873 if (ret < 0)
1874 pr_err("failed to initialize vbi media entity!\n");
1875
1876 /* Create entities for each input connector */
1877 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1878 struct media_entity *ent = &dev->input_ent[i];
1879
1880 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1881 break;
1882
1883 ent->name = inames[AUVI_INPUT(i).type];
1884 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1885 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1886
1887 switch (AUVI_INPUT(i).type) {
1888 case AU0828_VMUX_COMPOSITE:
1889 ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1890 break;
1891 case AU0828_VMUX_SVIDEO:
1892 ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1893 break;
1894 case AU0828_VMUX_CABLE:
1895 case AU0828_VMUX_TELEVISION:
1896 case AU0828_VMUX_DVB:
1897 default: /* Just to shut up a warning */
1898 ent->function = MEDIA_ENT_F_CONN_RF;
1899 break;
1900 }
1901
1902 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1903 if (ret < 0)
1904 pr_err("failed to initialize input pad[%d]!\n", i);
1905
1906 ret = media_device_register_entity(dev->media_dev, ent);
1907 if (ret < 0)
1908 pr_err("failed to register input entity %d!\n", i);
1909 }
1910 #endif
1911 }
1912
1913 /**************************************************************************/
1914
1915 int au0828_analog_register(struct au0828_dev *dev,
1916 struct usb_interface *interface)
1917 {
1918 int retval = -ENOMEM;
1919 struct usb_host_interface *iface_desc;
1920 struct usb_endpoint_descriptor *endpoint;
1921 int i, ret;
1922
1923 dprintk(1, "au0828_analog_register called for intf#%d!\n",
1924 interface->cur_altsetting->desc.bInterfaceNumber);
1925
1926 /* No analog TV */
1927 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1928 return 0;
1929
1930 /* set au0828 usb interface0 to as5 */
1931 retval = usb_set_interface(dev->usbdev,
1932 interface->cur_altsetting->desc.bInterfaceNumber, 5);
1933 if (retval != 0) {
1934 pr_info("Failure setting usb interface0 to as5\n");
1935 return retval;
1936 }
1937
1938 /* Figure out which endpoint has the isoc interface */
1939 iface_desc = interface->cur_altsetting;
1940 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1941 endpoint = &iface_desc->endpoint[i].desc;
1942 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1943 == USB_DIR_IN) &&
1944 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1945 == USB_ENDPOINT_XFER_ISOC)) {
1946
1947 /* we find our isoc in endpoint */
1948 u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1949 dev->max_pkt_size = (tmp & 0x07ff) *
1950 (((tmp & 0x1800) >> 11) + 1);
1951 dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1952 dprintk(1,
1953 "Found isoc endpoint 0x%02x, max size = %d\n",
1954 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1955 }
1956 }
1957 if (!(dev->isoc_in_endpointaddr)) {
1958 pr_info("Could not locate isoc endpoint\n");
1959 return -ENODEV;
1960 }
1961
1962 init_waitqueue_head(&dev->open);
1963 spin_lock_init(&dev->slock);
1964
1965 /* init video dma queues */
1966 INIT_LIST_HEAD(&dev->vidq.active);
1967 INIT_LIST_HEAD(&dev->vbiq.active);
1968
1969 setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1970 (unsigned long)dev);
1971 setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1972 (unsigned long)dev);
1973
1974 dev->width = NTSC_STD_W;
1975 dev->height = NTSC_STD_H;
1976 dev->field_size = dev->width * dev->height;
1977 dev->frame_size = dev->field_size << 1;
1978 dev->bytesperline = dev->width << 1;
1979 dev->vbi_width = 720;
1980 dev->vbi_height = 1;
1981 dev->ctrl_ainput = 0;
1982 dev->ctrl_freq = 960;
1983 dev->std = V4L2_STD_NTSC_M;
1984 /* Default input is TV Tuner */
1985 au0828_s_input(dev, 0);
1986
1987 mutex_init(&dev->vb_queue_lock);
1988 mutex_init(&dev->vb_vbi_queue_lock);
1989
1990 /* Fill the video capture device struct */
1991 dev->vdev = au0828_video_template;
1992 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1993 dev->vdev.lock = &dev->lock;
1994 dev->vdev.queue = &dev->vb_vidq;
1995 dev->vdev.queue->lock = &dev->vb_queue_lock;
1996 strcpy(dev->vdev.name, "au0828a video");
1997
1998 /* Setup the VBI device */
1999 dev->vbi_dev = au0828_video_template;
2000 dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
2001 dev->vbi_dev.lock = &dev->lock;
2002 dev->vbi_dev.queue = &dev->vb_vbiq;
2003 dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
2004 strcpy(dev->vbi_dev.name, "au0828a vbi");
2005
2006 /* Init entities at the Media Controller */
2007 au0828_analog_create_entities(dev);
2008
2009 /* initialize videobuf2 stuff */
2010 retval = au0828_vb2_setup(dev);
2011 if (retval != 0) {
2012 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2013 retval);
2014 return -ENODEV;
2015 }
2016
2017 /* Register the v4l2 device */
2018 video_set_drvdata(&dev->vdev, dev);
2019 retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2020 if (retval != 0) {
2021 dprintk(1, "unable to register video device (error = %d).\n",
2022 retval);
2023 ret = -ENODEV;
2024 goto err_reg_vdev;
2025 }
2026
2027 /* Register the vbi device */
2028 video_set_drvdata(&dev->vbi_dev, dev);
2029 retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2030 if (retval != 0) {
2031 dprintk(1, "unable to register vbi device (error = %d).\n",
2032 retval);
2033 ret = -ENODEV;
2034 goto err_reg_vbi_dev;
2035 }
2036
2037 #ifdef CONFIG_MEDIA_CONTROLLER
2038 retval = v4l2_mc_create_media_graph(dev->media_dev);
2039 if (retval) {
2040 pr_err("%s() au0282_dev_register failed to create graph\n",
2041 __func__);
2042 ret = -ENODEV;
2043 goto err_reg_vbi_dev;
2044 }
2045 #endif
2046
2047 dprintk(1, "%s completed!\n", __func__);
2048
2049 return 0;
2050
2051 err_reg_vbi_dev:
2052 video_unregister_device(&dev->vdev);
2053 err_reg_vdev:
2054 vb2_queue_release(&dev->vb_vidq);
2055 vb2_queue_release(&dev->vb_vbiq);
2056 return ret;
2057 }
2058
Linux kernel - Deliverables
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