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powerpc: Fix bad inline asm constraint in create_zero_mask()
[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 (dev->dev_state & DEV_DISCONNECTED) {
110 pr_info("v4l2 ioctl: device not present\n");
111 return -ENODEV;
112 }
113
114 if (dev->dev_state & DEV_MISCONFIGURED) {
115 pr_info("v4l2 ioctl: device is misconfigured; "
116 "close and open it again\n");
117 return -EIO;
118 }
119 return 0;
120 }
121
122 /*
123 * IRQ callback, called by URB callback
124 */
125 static void au0828_irq_callback(struct urb *urb)
126 {
127 struct au0828_dmaqueue *dma_q = urb->context;
128 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
129 unsigned long flags = 0;
130 int i;
131
132 switch (urb->status) {
133 case 0: /* success */
134 case -ETIMEDOUT: /* NAK */
135 break;
136 case -ECONNRESET: /* kill */
137 case -ENOENT:
138 case -ESHUTDOWN:
139 au0828_isocdbg("au0828_irq_callback called: status kill\n");
140 return;
141 default: /* unknown error */
142 au0828_isocdbg("urb completition error %d.\n", urb->status);
143 break;
144 }
145
146 /* Copy data from URB */
147 spin_lock_irqsave(&dev->slock, flags);
148 dev->isoc_ctl.isoc_copy(dev, urb);
149 spin_unlock_irqrestore(&dev->slock, flags);
150
151 /* Reset urb buffers */
152 for (i = 0; i < urb->number_of_packets; i++) {
153 urb->iso_frame_desc[i].status = 0;
154 urb->iso_frame_desc[i].actual_length = 0;
155 }
156 urb->status = 0;
157
158 urb->status = usb_submit_urb(urb, GFP_ATOMIC);
159 if (urb->status) {
160 au0828_isocdbg("urb resubmit failed (error=%i)\n",
161 urb->status);
162 }
163 dev->stream_state = STREAM_ON;
164 }
165
166 /*
167 * Stop and Deallocate URBs
168 */
169 static void au0828_uninit_isoc(struct au0828_dev *dev)
170 {
171 struct urb *urb;
172 int i;
173
174 au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
175
176 dev->isoc_ctl.nfields = -1;
177 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
178 urb = dev->isoc_ctl.urb[i];
179 if (urb) {
180 if (!irqs_disabled())
181 usb_kill_urb(urb);
182 else
183 usb_unlink_urb(urb);
184
185 if (dev->isoc_ctl.transfer_buffer[i]) {
186 usb_free_coherent(dev->usbdev,
187 urb->transfer_buffer_length,
188 dev->isoc_ctl.transfer_buffer[i],
189 urb->transfer_dma);
190 }
191 usb_free_urb(urb);
192 dev->isoc_ctl.urb[i] = NULL;
193 }
194 dev->isoc_ctl.transfer_buffer[i] = NULL;
195 }
196
197 kfree(dev->isoc_ctl.urb);
198 kfree(dev->isoc_ctl.transfer_buffer);
199
200 dev->isoc_ctl.urb = NULL;
201 dev->isoc_ctl.transfer_buffer = NULL;
202 dev->isoc_ctl.num_bufs = 0;
203
204 dev->stream_state = STREAM_OFF;
205 }
206
207 /*
208 * Allocate URBs and start IRQ
209 */
210 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
211 int num_bufs, int max_pkt_size,
212 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
213 {
214 struct au0828_dmaqueue *dma_q = &dev->vidq;
215 int i;
216 int sb_size, pipe;
217 struct urb *urb;
218 int j, k;
219 int rc;
220
221 au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
222
223 dev->isoc_ctl.isoc_copy = isoc_copy;
224 dev->isoc_ctl.num_bufs = num_bufs;
225
226 dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL);
227 if (!dev->isoc_ctl.urb) {
228 au0828_isocdbg("cannot alloc memory for usb buffers\n");
229 return -ENOMEM;
230 }
231
232 dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
233 GFP_KERNEL);
234 if (!dev->isoc_ctl.transfer_buffer) {
235 au0828_isocdbg("cannot allocate memory for usb transfer\n");
236 kfree(dev->isoc_ctl.urb);
237 return -ENOMEM;
238 }
239
240 dev->isoc_ctl.max_pkt_size = max_pkt_size;
241 dev->isoc_ctl.buf = NULL;
242
243 sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
244
245 /* allocate urbs and transfer buffers */
246 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
247 urb = usb_alloc_urb(max_packets, GFP_KERNEL);
248 if (!urb) {
249 au0828_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
250 au0828_uninit_isoc(dev);
251 return -ENOMEM;
252 }
253 dev->isoc_ctl.urb[i] = urb;
254
255 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
256 sb_size, GFP_KERNEL, &urb->transfer_dma);
257 if (!dev->isoc_ctl.transfer_buffer[i]) {
258 printk("unable to allocate %i bytes for transfer"
259 " buffer %i%s\n",
260 sb_size, i,
261 in_interrupt() ? " while in int" : "");
262 au0828_uninit_isoc(dev);
263 return -ENOMEM;
264 }
265 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
266
267 pipe = usb_rcvisocpipe(dev->usbdev,
268 dev->isoc_in_endpointaddr),
269
270 usb_fill_int_urb(urb, dev->usbdev, pipe,
271 dev->isoc_ctl.transfer_buffer[i], sb_size,
272 au0828_irq_callback, dma_q, 1);
273
274 urb->number_of_packets = max_packets;
275 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
276
277 k = 0;
278 for (j = 0; j < max_packets; j++) {
279 urb->iso_frame_desc[j].offset = k;
280 urb->iso_frame_desc[j].length =
281 dev->isoc_ctl.max_pkt_size;
282 k += dev->isoc_ctl.max_pkt_size;
283 }
284 }
285
286 /* submit urbs and enables IRQ */
287 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
288 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
289 if (rc) {
290 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
291 i, rc);
292 au0828_uninit_isoc(dev);
293 return rc;
294 }
295 }
296
297 return 0;
298 }
299
300 /*
301 * Announces that a buffer were filled and request the next
302 */
303 static inline void buffer_filled(struct au0828_dev *dev,
304 struct au0828_dmaqueue *dma_q,
305 struct au0828_buffer *buf)
306 {
307 struct vb2_v4l2_buffer *vb = &buf->vb;
308 struct vb2_queue *q = vb->vb2_buf.vb2_queue;
309
310 /* Advice that buffer was filled */
311 au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
312
313 if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
314 vb->sequence = dev->frame_count++;
315 else
316 vb->sequence = dev->vbi_frame_count++;
317
318 vb->field = V4L2_FIELD_INTERLACED;
319 vb->vb2_buf.timestamp = ktime_get_ns();
320 vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
321 }
322
323 /*
324 * Identify the buffer header type and properly handles
325 */
326 static void au0828_copy_video(struct au0828_dev *dev,
327 struct au0828_dmaqueue *dma_q,
328 struct au0828_buffer *buf,
329 unsigned char *p,
330 unsigned char *outp, unsigned long len)
331 {
332 void *fieldstart, *startwrite, *startread;
333 int linesdone, currlinedone, offset, lencopy, remain;
334 int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
335
336 if (len == 0)
337 return;
338
339 if (dma_q->pos + len > buf->length)
340 len = buf->length - dma_q->pos;
341
342 startread = p;
343 remain = len;
344
345 /* Interlaces frame */
346 if (buf->top_field)
347 fieldstart = outp;
348 else
349 fieldstart = outp + bytesperline;
350
351 linesdone = dma_q->pos / bytesperline;
352 currlinedone = dma_q->pos % bytesperline;
353 offset = linesdone * bytesperline * 2 + currlinedone;
354 startwrite = fieldstart + offset;
355 lencopy = bytesperline - currlinedone;
356 lencopy = lencopy > remain ? remain : lencopy;
357
358 if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
359 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
360 ((char *)startwrite + lencopy) -
361 ((char *)outp + buf->length));
362 remain = (char *)outp + buf->length - (char *)startwrite;
363 lencopy = remain;
364 }
365 if (lencopy <= 0)
366 return;
367 memcpy(startwrite, startread, lencopy);
368
369 remain -= lencopy;
370
371 while (remain > 0) {
372 startwrite += lencopy + bytesperline;
373 startread += lencopy;
374 if (bytesperline > remain)
375 lencopy = remain;
376 else
377 lencopy = bytesperline;
378
379 if ((char *)startwrite + lencopy > (char *)outp +
380 buf->length) {
381 au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
382 ((char *)startwrite + lencopy) -
383 ((char *)outp + buf->length));
384 lencopy = remain = (char *)outp + buf->length -
385 (char *)startwrite;
386 }
387 if (lencopy <= 0)
388 break;
389
390 memcpy(startwrite, startread, lencopy);
391
392 remain -= lencopy;
393 }
394
395 if (offset > 1440) {
396 /* We have enough data to check for greenscreen */
397 if (outp[0] < 0x60 && outp[1440] < 0x60)
398 dev->greenscreen_detected = 1;
399 }
400
401 dma_q->pos += len;
402 }
403
404 /*
405 * video-buf generic routine to get the next available buffer
406 */
407 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
408 struct au0828_buffer **buf)
409 {
410 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
411
412 if (list_empty(&dma_q->active)) {
413 au0828_isocdbg("No active queue to serve\n");
414 dev->isoc_ctl.buf = NULL;
415 *buf = NULL;
416 return;
417 }
418
419 /* Get the next buffer */
420 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
421 /* Cleans up buffer - Useful for testing for frame/URB loss */
422 list_del(&(*buf)->list);
423 dma_q->pos = 0;
424 (*buf)->vb_buf = (*buf)->mem;
425 dev->isoc_ctl.buf = *buf;
426
427 return;
428 }
429
430 static void au0828_copy_vbi(struct au0828_dev *dev,
431 struct au0828_dmaqueue *dma_q,
432 struct au0828_buffer *buf,
433 unsigned char *p,
434 unsigned char *outp, unsigned long len)
435 {
436 unsigned char *startwrite, *startread;
437 int bytesperline;
438 int i, j = 0;
439
440 if (dev == NULL) {
441 au0828_isocdbg("dev is null\n");
442 return;
443 }
444
445 if (dma_q == NULL) {
446 au0828_isocdbg("dma_q is null\n");
447 return;
448 }
449 if (buf == NULL)
450 return;
451 if (p == NULL) {
452 au0828_isocdbg("p is null\n");
453 return;
454 }
455 if (outp == NULL) {
456 au0828_isocdbg("outp is null\n");
457 return;
458 }
459
460 bytesperline = dev->vbi_width;
461
462 if (dma_q->pos + len > buf->length)
463 len = buf->length - dma_q->pos;
464
465 startread = p;
466 startwrite = outp + (dma_q->pos / 2);
467
468 /* Make sure the bottom field populates the second half of the frame */
469 if (buf->top_field == 0)
470 startwrite += bytesperline * dev->vbi_height;
471
472 for (i = 0; i < len; i += 2)
473 startwrite[j++] = startread[i+1];
474
475 dma_q->pos += len;
476 }
477
478
479 /*
480 * video-buf generic routine to get the next available VBI buffer
481 */
482 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
483 struct au0828_buffer **buf)
484 {
485 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
486
487 if (list_empty(&dma_q->active)) {
488 au0828_isocdbg("No active queue to serve\n");
489 dev->isoc_ctl.vbi_buf = NULL;
490 *buf = NULL;
491 return;
492 }
493
494 /* Get the next buffer */
495 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
496 /* Cleans up buffer - Useful for testing for frame/URB loss */
497 list_del(&(*buf)->list);
498 dma_q->pos = 0;
499 (*buf)->vb_buf = (*buf)->mem;
500 dev->isoc_ctl.vbi_buf = *buf;
501 return;
502 }
503
504 /*
505 * Controls the isoc copy of each urb packet
506 */
507 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
508 {
509 struct au0828_buffer *buf;
510 struct au0828_buffer *vbi_buf;
511 struct au0828_dmaqueue *dma_q = urb->context;
512 struct au0828_dmaqueue *vbi_dma_q = &dev->vbiq;
513 unsigned char *outp = NULL;
514 unsigned char *vbioutp = NULL;
515 int i, len = 0, rc = 1;
516 unsigned char *p;
517 unsigned char fbyte;
518 unsigned int vbi_field_size;
519 unsigned int remain, lencopy;
520
521 if (!dev)
522 return 0;
523
524 if ((dev->dev_state & DEV_DISCONNECTED) ||
525 (dev->dev_state & DEV_MISCONFIGURED))
526 return 0;
527
528 if (urb->status < 0) {
529 print_err_status(dev, -1, urb->status);
530 if (urb->status == -ENOENT)
531 return 0;
532 }
533
534 buf = dev->isoc_ctl.buf;
535 if (buf != NULL)
536 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
537
538 vbi_buf = dev->isoc_ctl.vbi_buf;
539 if (vbi_buf != NULL)
540 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
541
542 for (i = 0; i < urb->number_of_packets; i++) {
543 int status = urb->iso_frame_desc[i].status;
544
545 if (status < 0) {
546 print_err_status(dev, i, status);
547 if (urb->iso_frame_desc[i].status != -EPROTO)
548 continue;
549 }
550
551 if (urb->iso_frame_desc[i].actual_length <= 0)
552 continue;
553
554 if (urb->iso_frame_desc[i].actual_length >
555 dev->max_pkt_size) {
556 au0828_isocdbg("packet bigger than packet size");
557 continue;
558 }
559
560 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
561 fbyte = p[0];
562 len = urb->iso_frame_desc[i].actual_length - 4;
563 p += 4;
564
565 if (fbyte & 0x80) {
566 len -= 4;
567 p += 4;
568 au0828_isocdbg("Video frame %s\n",
569 (fbyte & 0x40) ? "odd" : "even");
570 if (fbyte & 0x40) {
571 /* VBI */
572 if (vbi_buf != NULL)
573 buffer_filled(dev, vbi_dma_q, vbi_buf);
574 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
575 if (vbi_buf == NULL)
576 vbioutp = NULL;
577 else
578 vbioutp = vb2_plane_vaddr(
579 &vbi_buf->vb.vb2_buf, 0);
580
581 /* Video */
582 if (buf != NULL)
583 buffer_filled(dev, dma_q, buf);
584 get_next_buf(dma_q, &buf);
585 if (buf == NULL)
586 outp = NULL;
587 else
588 outp = vb2_plane_vaddr(
589 &buf->vb.vb2_buf, 0);
590
591 /* As long as isoc traffic is arriving, keep
592 resetting the timer */
593 if (dev->vid_timeout_running)
594 mod_timer(&dev->vid_timeout,
595 jiffies + (HZ / 10));
596 if (dev->vbi_timeout_running)
597 mod_timer(&dev->vbi_timeout,
598 jiffies + (HZ / 10));
599 }
600
601 if (buf != NULL) {
602 if (fbyte & 0x40)
603 buf->top_field = 1;
604 else
605 buf->top_field = 0;
606 }
607
608 if (vbi_buf != NULL) {
609 if (fbyte & 0x40)
610 vbi_buf->top_field = 1;
611 else
612 vbi_buf->top_field = 0;
613 }
614
615 dev->vbi_read = 0;
616 vbi_dma_q->pos = 0;
617 dma_q->pos = 0;
618 }
619
620 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
621 if (dev->vbi_read < vbi_field_size) {
622 remain = vbi_field_size - dev->vbi_read;
623 if (len < remain)
624 lencopy = len;
625 else
626 lencopy = remain;
627
628 if (vbi_buf != NULL)
629 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
630 vbioutp, len);
631
632 len -= lencopy;
633 p += lencopy;
634 dev->vbi_read += lencopy;
635 }
636
637 if (dev->vbi_read >= vbi_field_size && buf != NULL)
638 au0828_copy_video(dev, dma_q, buf, p, outp, len);
639 }
640 return rc;
641 }
642
643 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
644 {
645 #ifdef CONFIG_MEDIA_CONTROLLER
646 int i;
647
648 for (i = 0; i < AU0828_MAX_INPUT; i++) {
649 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
650 return;
651 media_device_unregister_entity(&dev->input_ent[i]);
652 }
653 #endif
654 }
655
656 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
657 {
658 struct au0828_dev *dev =
659 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
660
661 v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
662 v4l2_device_unregister(&dev->v4l2_dev);
663 au0828_usb_v4l2_media_release(dev);
664 au0828_usb_release(dev);
665 }
666
667 int au0828_v4l2_device_register(struct usb_interface *interface,
668 struct au0828_dev *dev)
669 {
670 int retval;
671
672 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
673 return 0;
674
675 /* Create the v4l2_device */
676 #ifdef CONFIG_MEDIA_CONTROLLER
677 dev->v4l2_dev.mdev = dev->media_dev;
678 #endif
679 retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
680 if (retval) {
681 pr_err("%s() v4l2_device_register failed\n",
682 __func__);
683 mutex_unlock(&dev->lock);
684 kfree(dev);
685 return retval;
686 }
687
688 dev->v4l2_dev.release = au0828_usb_v4l2_release;
689
690 /* This control handler will inherit the controls from au8522 */
691 retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
692 if (retval) {
693 pr_err("%s() v4l2_ctrl_handler_init failed\n",
694 __func__);
695 mutex_unlock(&dev->lock);
696 kfree(dev);
697 return retval;
698 }
699 dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
700
701 return 0;
702 }
703
704 static int queue_setup(struct vb2_queue *vq,
705 unsigned int *nbuffers, unsigned int *nplanes,
706 unsigned int sizes[], void *alloc_ctxs[])
707 {
708 struct au0828_dev *dev = vb2_get_drv_priv(vq);
709 unsigned long size = dev->height * dev->bytesperline;
710
711 if (*nplanes)
712 return sizes[0] < size ? -EINVAL : 0;
713 *nplanes = 1;
714 sizes[0] = size;
715 return 0;
716 }
717
718 static int
719 buffer_prepare(struct vb2_buffer *vb)
720 {
721 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
722 struct au0828_buffer *buf = container_of(vbuf,
723 struct au0828_buffer, vb);
724 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
725
726 buf->length = dev->height * dev->bytesperline;
727
728 if (vb2_plane_size(vb, 0) < buf->length) {
729 pr_err("%s data will not fit into plane (%lu < %lu)\n",
730 __func__, vb2_plane_size(vb, 0), buf->length);
731 return -EINVAL;
732 }
733 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
734 return 0;
735 }
736
737 static void
738 buffer_queue(struct vb2_buffer *vb)
739 {
740 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
741 struct au0828_buffer *buf = container_of(vbuf,
742 struct au0828_buffer,
743 vb);
744 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
745 struct au0828_dmaqueue *vidq = &dev->vidq;
746 unsigned long flags = 0;
747
748 buf->mem = vb2_plane_vaddr(vb, 0);
749 buf->length = vb2_plane_size(vb, 0);
750
751 spin_lock_irqsave(&dev->slock, flags);
752 list_add_tail(&buf->list, &vidq->active);
753 spin_unlock_irqrestore(&dev->slock, flags);
754 }
755
756 static int au0828_i2s_init(struct au0828_dev *dev)
757 {
758 /* Enable i2s mode */
759 au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
760 return 0;
761 }
762
763 /*
764 * Auvitek au0828 analog stream enable
765 */
766 static int au0828_analog_stream_enable(struct au0828_dev *d)
767 {
768 struct usb_interface *iface;
769 int ret, h, w;
770
771 dprintk(1, "au0828_analog_stream_enable called\n");
772
773 iface = usb_ifnum_to_if(d->usbdev, 0);
774 if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
775 dprintk(1, "Changing intf#0 to alt 5\n");
776 /* set au0828 interface0 to AS5 here again */
777 ret = usb_set_interface(d->usbdev, 0, 5);
778 if (ret < 0) {
779 pr_info("Au0828 can't set alt setting to 5!\n");
780 return -EBUSY;
781 }
782 }
783
784 h = d->height / 2 + 2;
785 w = d->width * 2;
786
787 au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
788 au0828_writereg(d, 0x106, 0x00);
789 /* set x position */
790 au0828_writereg(d, 0x110, 0x00);
791 au0828_writereg(d, 0x111, 0x00);
792 au0828_writereg(d, 0x114, w & 0xff);
793 au0828_writereg(d, 0x115, w >> 8);
794 /* set y position */
795 au0828_writereg(d, 0x112, 0x00);
796 au0828_writereg(d, 0x113, 0x00);
797 au0828_writereg(d, 0x116, h & 0xff);
798 au0828_writereg(d, 0x117, h >> 8);
799 au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
800
801 return 0;
802 }
803
804 static int au0828_analog_stream_disable(struct au0828_dev *d)
805 {
806 dprintk(1, "au0828_analog_stream_disable called\n");
807 au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
808 return 0;
809 }
810
811 static void au0828_analog_stream_reset(struct au0828_dev *dev)
812 {
813 dprintk(1, "au0828_analog_stream_reset called\n");
814 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
815 mdelay(30);
816 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
817 }
818
819 /*
820 * Some operations needs to stop current streaming
821 */
822 static int au0828_stream_interrupt(struct au0828_dev *dev)
823 {
824 int ret = 0;
825
826 dev->stream_state = STREAM_INTERRUPT;
827 if (dev->dev_state == DEV_DISCONNECTED)
828 return -ENODEV;
829 else if (ret) {
830 dev->dev_state = DEV_MISCONFIGURED;
831 dprintk(1, "%s device is misconfigured!\n", __func__);
832 return ret;
833 }
834 return 0;
835 }
836
837 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
838 {
839 struct au0828_dev *dev = vb2_get_drv_priv(vq);
840 int rc = 0;
841
842 dprintk(1, "au0828_start_analog_streaming called %d\n",
843 dev->streaming_users);
844
845 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
846 dev->frame_count = 0;
847 else
848 dev->vbi_frame_count = 0;
849
850 if (dev->streaming_users == 0) {
851 /* If we were doing ac97 instead of i2s, it would go here...*/
852 au0828_i2s_init(dev);
853 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
854 AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
855 au0828_isoc_copy);
856 if (rc < 0) {
857 pr_info("au0828_init_isoc failed\n");
858 return rc;
859 }
860
861 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
862 v4l2_device_call_all(&dev->v4l2_dev, 0, video,
863 s_stream, 1);
864 dev->vid_timeout_running = 1;
865 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
866 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
867 dev->vbi_timeout_running = 1;
868 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
869 }
870 }
871 dev->streaming_users++;
872 return rc;
873 }
874
875 static void au0828_stop_streaming(struct vb2_queue *vq)
876 {
877 struct au0828_dev *dev = vb2_get_drv_priv(vq);
878 struct au0828_dmaqueue *vidq = &dev->vidq;
879 unsigned long flags = 0;
880
881 dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
882
883 if (dev->streaming_users-- == 1)
884 au0828_uninit_isoc(dev);
885
886 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
887 dev->vid_timeout_running = 0;
888 del_timer_sync(&dev->vid_timeout);
889
890 spin_lock_irqsave(&dev->slock, flags);
891 if (dev->isoc_ctl.buf != NULL) {
892 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
893 VB2_BUF_STATE_ERROR);
894 dev->isoc_ctl.buf = NULL;
895 }
896 while (!list_empty(&vidq->active)) {
897 struct au0828_buffer *buf;
898
899 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
900 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
901 list_del(&buf->list);
902 }
903 spin_unlock_irqrestore(&dev->slock, flags);
904 }
905
906 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
907 {
908 struct au0828_dev *dev = vb2_get_drv_priv(vq);
909 struct au0828_dmaqueue *vbiq = &dev->vbiq;
910 unsigned long flags = 0;
911
912 dprintk(1, "au0828_stop_vbi_streaming called %d\n",
913 dev->streaming_users);
914
915 if (dev->streaming_users-- == 1)
916 au0828_uninit_isoc(dev);
917
918 spin_lock_irqsave(&dev->slock, flags);
919 if (dev->isoc_ctl.vbi_buf != NULL) {
920 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
921 VB2_BUF_STATE_ERROR);
922 dev->isoc_ctl.vbi_buf = NULL;
923 }
924 while (!list_empty(&vbiq->active)) {
925 struct au0828_buffer *buf;
926
927 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
928 list_del(&buf->list);
929 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
930 }
931 spin_unlock_irqrestore(&dev->slock, flags);
932
933 dev->vbi_timeout_running = 0;
934 del_timer_sync(&dev->vbi_timeout);
935 }
936
937 static struct vb2_ops au0828_video_qops = {
938 .queue_setup = queue_setup,
939 .buf_prepare = buffer_prepare,
940 .buf_queue = buffer_queue,
941 .start_streaming = au0828_start_analog_streaming,
942 .stop_streaming = au0828_stop_streaming,
943 .wait_prepare = vb2_ops_wait_prepare,
944 .wait_finish = vb2_ops_wait_finish,
945 };
946
947 /* ------------------------------------------------------------------
948 V4L2 interface
949 ------------------------------------------------------------------*/
950 /*
951 * au0828_analog_unregister
952 * unregister v4l2 devices
953 */
954 int au0828_analog_unregister(struct au0828_dev *dev)
955 {
956 dprintk(1, "au0828_analog_unregister called\n");
957
958 /* No analog TV */
959 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
960 return 0;
961
962 mutex_lock(&au0828_sysfs_lock);
963 video_unregister_device(&dev->vdev);
964 video_unregister_device(&dev->vbi_dev);
965 mutex_unlock(&au0828_sysfs_lock);
966
967 v4l2_device_disconnect(&dev->v4l2_dev);
968 v4l2_device_put(&dev->v4l2_dev);
969
970 return 1;
971 }
972
973 /* This function ensures that video frames continue to be delivered even if
974 the ITU-656 input isn't receiving any data (thereby preventing applications
975 such as tvtime from hanging) */
976 static void au0828_vid_buffer_timeout(unsigned long data)
977 {
978 struct au0828_dev *dev = (struct au0828_dev *) data;
979 struct au0828_dmaqueue *dma_q = &dev->vidq;
980 struct au0828_buffer *buf;
981 unsigned char *vid_data;
982 unsigned long flags = 0;
983
984 spin_lock_irqsave(&dev->slock, flags);
985
986 buf = dev->isoc_ctl.buf;
987 if (buf != NULL) {
988 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
989 memset(vid_data, 0x00, buf->length); /* Blank green frame */
990 buffer_filled(dev, dma_q, buf);
991 }
992 get_next_buf(dma_q, &buf);
993
994 if (dev->vid_timeout_running == 1)
995 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
996
997 spin_unlock_irqrestore(&dev->slock, flags);
998 }
999
1000 static void au0828_vbi_buffer_timeout(unsigned long data)
1001 {
1002 struct au0828_dev *dev = (struct au0828_dev *) data;
1003 struct au0828_dmaqueue *dma_q = &dev->vbiq;
1004 struct au0828_buffer *buf;
1005 unsigned char *vbi_data;
1006 unsigned long flags = 0;
1007
1008 spin_lock_irqsave(&dev->slock, flags);
1009
1010 buf = dev->isoc_ctl.vbi_buf;
1011 if (buf != NULL) {
1012 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1013 memset(vbi_data, 0x00, buf->length);
1014 buffer_filled(dev, dma_q, buf);
1015 }
1016 vbi_get_next_buf(dma_q, &buf);
1017
1018 if (dev->vbi_timeout_running == 1)
1019 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1020 spin_unlock_irqrestore(&dev->slock, flags);
1021 }
1022
1023 static int au0828_v4l2_open(struct file *filp)
1024 {
1025 struct au0828_dev *dev = video_drvdata(filp);
1026 int ret;
1027
1028 dprintk(1,
1029 "%s called std_set %d dev_state %d stream users %d users %d\n",
1030 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1031 dev->streaming_users, dev->users);
1032
1033 if (mutex_lock_interruptible(&dev->lock))
1034 return -ERESTARTSYS;
1035
1036 ret = v4l2_fh_open(filp);
1037 if (ret) {
1038 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1039 __func__, ret);
1040 mutex_unlock(&dev->lock);
1041 return ret;
1042 }
1043
1044 if (dev->users == 0) {
1045 au0828_analog_stream_enable(dev);
1046 au0828_analog_stream_reset(dev);
1047 dev->stream_state = STREAM_OFF;
1048 dev->dev_state |= DEV_INITIALIZED;
1049 }
1050 dev->users++;
1051 mutex_unlock(&dev->lock);
1052 return ret;
1053 }
1054
1055 static int au0828_v4l2_close(struct file *filp)
1056 {
1057 int ret;
1058 struct au0828_dev *dev = video_drvdata(filp);
1059 struct video_device *vdev = video_devdata(filp);
1060
1061 dprintk(1,
1062 "%s called std_set %d dev_state %d stream users %d users %d\n",
1063 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1064 dev->streaming_users, dev->users);
1065
1066 mutex_lock(&dev->lock);
1067 if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1068 /* Cancel timeout thread in case they didn't call streamoff */
1069 dev->vid_timeout_running = 0;
1070 del_timer_sync(&dev->vid_timeout);
1071 } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1072 dev->vbi_timeout_running) {
1073 /* Cancel timeout thread in case they didn't call streamoff */
1074 dev->vbi_timeout_running = 0;
1075 del_timer_sync(&dev->vbi_timeout);
1076 }
1077
1078 if (dev->dev_state == DEV_DISCONNECTED)
1079 goto end;
1080
1081 if (dev->users == 1) {
1082 /*
1083 * Avoid putting tuner in sleep if DVB or ALSA are
1084 * streaming.
1085 *
1086 * On most USB devices like au0828 the tuner can
1087 * be safely put in sleep stare here if ALSA isn't
1088 * streaming. Exceptions are some very old USB tuner
1089 * models such as em28xx-based WinTV USB2 which have
1090 * a separate audio output jack. The devices that have
1091 * a separate audio output jack have analog tuners,
1092 * like Philips FM1236. Those devices are always on,
1093 * so the s_power callback are silently ignored.
1094 * So, the current logic here does the following:
1095 * Disable (put tuner to sleep) when
1096 * - ALSA and DVB aren't not streaming;
1097 * - the last V4L2 file handler is closed.
1098 *
1099 * FIXME:
1100 *
1101 * Additionally, this logic could be improved to
1102 * disable the media source if the above conditions
1103 * are met and if the device:
1104 * - doesn't have a separate audio out plug (or
1105 * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1106 *
1107 * Once this additional logic is in place, a callback
1108 * is needed to enable the media source and power on
1109 * the tuner, for radio to work.
1110 */
1111 ret = v4l_enable_media_source(vdev);
1112 if (ret == 0)
1113 v4l2_device_call_all(&dev->v4l2_dev, 0, core,
1114 s_power, 0);
1115 dev->std_set_in_tuner_core = 0;
1116
1117 /* When close the device, set the usb intf0 into alt0 to free
1118 USB bandwidth */
1119 ret = usb_set_interface(dev->usbdev, 0, 0);
1120 if (ret < 0)
1121 pr_info("Au0828 can't set alternate to 0!\n");
1122 }
1123 end:
1124 _vb2_fop_release(filp, NULL);
1125 dev->users--;
1126 mutex_unlock(&dev->lock);
1127 return 0;
1128 }
1129
1130 /* Must be called with dev->lock held */
1131 static void au0828_init_tuner(struct au0828_dev *dev)
1132 {
1133 struct v4l2_frequency f = {
1134 .frequency = dev->ctrl_freq,
1135 .type = V4L2_TUNER_ANALOG_TV,
1136 };
1137
1138 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1139 dev->std_set_in_tuner_core, dev->dev_state);
1140
1141 if (dev->std_set_in_tuner_core)
1142 return;
1143 dev->std_set_in_tuner_core = 1;
1144 i2c_gate_ctrl(dev, 1);
1145 /* If we've never sent the standard in tuner core, do so now.
1146 We don't do this at device probe because we don't want to
1147 incur the cost of a firmware load */
1148 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1149 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1150 i2c_gate_ctrl(dev, 0);
1151 }
1152
1153 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1154 struct v4l2_format *format)
1155 {
1156 int ret;
1157 int width = format->fmt.pix.width;
1158 int height = format->fmt.pix.height;
1159
1160 /* If they are demanding a format other than the one we support,
1161 bail out (tvtime asks for UYVY and then retries with YUYV) */
1162 if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1163 return -EINVAL;
1164
1165 /* format->fmt.pix.width only support 720 and height 480 */
1166 if (width != 720)
1167 width = 720;
1168 if (height != 480)
1169 height = 480;
1170
1171 format->fmt.pix.width = width;
1172 format->fmt.pix.height = height;
1173 format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1174 format->fmt.pix.bytesperline = width * 2;
1175 format->fmt.pix.sizeimage = width * height * 2;
1176 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1177 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1178 format->fmt.pix.priv = 0;
1179
1180 if (cmd == VIDIOC_TRY_FMT)
1181 return 0;
1182
1183 /* maybe set new image format, driver current only support 720*480 */
1184 dev->width = width;
1185 dev->height = height;
1186 dev->frame_size = width * height * 2;
1187 dev->field_size = width * height;
1188 dev->bytesperline = width * 2;
1189
1190 if (dev->stream_state == STREAM_ON) {
1191 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1192 ret = au0828_stream_interrupt(dev);
1193 if (ret != 0) {
1194 dprintk(1, "error interrupting video stream!\n");
1195 return ret;
1196 }
1197 }
1198
1199 au0828_analog_stream_enable(dev);
1200
1201 return 0;
1202 }
1203
1204 static int vidioc_querycap(struct file *file, void *priv,
1205 struct v4l2_capability *cap)
1206 {
1207 struct video_device *vdev = video_devdata(file);
1208 struct au0828_dev *dev = video_drvdata(file);
1209
1210 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1211 dev->std_set_in_tuner_core, dev->dev_state);
1212
1213 strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1214 strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1215 usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1216
1217 /* set the device capabilities */
1218 cap->device_caps = V4L2_CAP_AUDIO |
1219 V4L2_CAP_READWRITE |
1220 V4L2_CAP_STREAMING |
1221 V4L2_CAP_TUNER;
1222 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1223 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1224 else
1225 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1226 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1227 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1228 return 0;
1229 }
1230
1231 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1232 struct v4l2_fmtdesc *f)
1233 {
1234 if (f->index)
1235 return -EINVAL;
1236
1237 dprintk(1, "%s called\n", __func__);
1238
1239 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1240 strcpy(f->description, "Packed YUV2");
1241
1242 f->flags = 0;
1243 f->pixelformat = V4L2_PIX_FMT_UYVY;
1244
1245 return 0;
1246 }
1247
1248 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1249 struct v4l2_format *f)
1250 {
1251 struct au0828_dev *dev = video_drvdata(file);
1252
1253 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1254 dev->std_set_in_tuner_core, dev->dev_state);
1255
1256 f->fmt.pix.width = dev->width;
1257 f->fmt.pix.height = dev->height;
1258 f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1259 f->fmt.pix.bytesperline = dev->bytesperline;
1260 f->fmt.pix.sizeimage = dev->frame_size;
1261 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1262 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1263 f->fmt.pix.priv = 0;
1264 return 0;
1265 }
1266
1267 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1268 struct v4l2_format *f)
1269 {
1270 struct au0828_dev *dev = video_drvdata(file);
1271
1272 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1273 dev->std_set_in_tuner_core, dev->dev_state);
1274
1275 return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1276 }
1277
1278 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1279 struct v4l2_format *f)
1280 {
1281 struct au0828_dev *dev = video_drvdata(file);
1282 int rc;
1283
1284 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1285 dev->std_set_in_tuner_core, dev->dev_state);
1286
1287 rc = check_dev(dev);
1288 if (rc < 0)
1289 return rc;
1290
1291 if (vb2_is_busy(&dev->vb_vidq)) {
1292 pr_info("%s queue busy\n", __func__);
1293 rc = -EBUSY;
1294 goto out;
1295 }
1296
1297 rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1298 out:
1299 return rc;
1300 }
1301
1302 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1303 {
1304 struct au0828_dev *dev = video_drvdata(file);
1305
1306 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1307 dev->std_set_in_tuner_core, dev->dev_state);
1308
1309 if (norm == dev->std)
1310 return 0;
1311
1312 if (dev->streaming_users > 0)
1313 return -EBUSY;
1314
1315 dev->std = norm;
1316
1317 au0828_init_tuner(dev);
1318
1319 i2c_gate_ctrl(dev, 1);
1320
1321 /*
1322 * FIXME: when we support something other than 60Hz standards,
1323 * we are going to have to make the au0828 bridge adjust the size
1324 * of its capture buffer, which is currently hardcoded at 720x480
1325 */
1326
1327 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1328
1329 i2c_gate_ctrl(dev, 0);
1330
1331 return 0;
1332 }
1333
1334 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1335 {
1336 struct au0828_dev *dev = video_drvdata(file);
1337
1338 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1339 dev->std_set_in_tuner_core, dev->dev_state);
1340
1341 *norm = dev->std;
1342 return 0;
1343 }
1344
1345 static int vidioc_enum_input(struct file *file, void *priv,
1346 struct v4l2_input *input)
1347 {
1348 struct au0828_dev *dev = video_drvdata(file);
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 };
1359
1360 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1361 dev->std_set_in_tuner_core, dev->dev_state);
1362
1363 tmp = input->index;
1364
1365 if (tmp >= AU0828_MAX_INPUT)
1366 return -EINVAL;
1367 if (AUVI_INPUT(tmp).type == 0)
1368 return -EINVAL;
1369
1370 input->index = tmp;
1371 strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1372 if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1373 (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1374 input->type |= V4L2_INPUT_TYPE_TUNER;
1375 input->audioset = 1;
1376 } else {
1377 input->type |= V4L2_INPUT_TYPE_CAMERA;
1378 input->audioset = 2;
1379 }
1380
1381 input->std = dev->vdev.tvnorms;
1382
1383 return 0;
1384 }
1385
1386 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1387 {
1388 struct au0828_dev *dev = video_drvdata(file);
1389
1390 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1391 dev->std_set_in_tuner_core, dev->dev_state);
1392
1393 *i = dev->ctrl_input;
1394 return 0;
1395 }
1396
1397 static void au0828_s_input(struct au0828_dev *dev, int index)
1398 {
1399 int i;
1400
1401 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1402 dev->std_set_in_tuner_core, dev->dev_state);
1403
1404 switch (AUVI_INPUT(index).type) {
1405 case AU0828_VMUX_SVIDEO:
1406 dev->input_type = AU0828_VMUX_SVIDEO;
1407 dev->ctrl_ainput = 1;
1408 break;
1409 case AU0828_VMUX_COMPOSITE:
1410 dev->input_type = AU0828_VMUX_COMPOSITE;
1411 dev->ctrl_ainput = 1;
1412 break;
1413 case AU0828_VMUX_TELEVISION:
1414 dev->input_type = AU0828_VMUX_TELEVISION;
1415 dev->ctrl_ainput = 0;
1416 break;
1417 default:
1418 dprintk(1, "unknown input type set [%d]\n",
1419 AUVI_INPUT(index).type);
1420 return;
1421 }
1422
1423 dev->ctrl_input = index;
1424
1425 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1426 AUVI_INPUT(index).vmux, 0, 0);
1427
1428 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1429 int enable = 0;
1430 if (AUVI_INPUT(i).audio_setup == NULL)
1431 continue;
1432
1433 if (i == index)
1434 enable = 1;
1435 else
1436 enable = 0;
1437 if (enable) {
1438 (AUVI_INPUT(i).audio_setup)(dev, enable);
1439 } else {
1440 /* Make sure we leave it turned on if some
1441 other input is routed to this callback */
1442 if ((AUVI_INPUT(i).audio_setup) !=
1443 ((AUVI_INPUT(index).audio_setup))) {
1444 (AUVI_INPUT(i).audio_setup)(dev, enable);
1445 }
1446 }
1447 }
1448
1449 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1450 AUVI_INPUT(index).amux, 0, 0);
1451 }
1452
1453 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1454 {
1455 struct au0828_dev *dev = video_drvdata(file);
1456 struct video_device *vfd = video_devdata(file);
1457
1458 dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1459 index);
1460 if (index >= AU0828_MAX_INPUT)
1461 return -EINVAL;
1462 if (AUVI_INPUT(index).type == 0)
1463 return -EINVAL;
1464
1465 if (dev->ctrl_input == index)
1466 return 0;
1467
1468 au0828_s_input(dev, index);
1469
1470 /*
1471 * Input has been changed. Disable the media source
1472 * associated with the old input and enable source
1473 * for the newly set input
1474 */
1475 v4l_disable_media_source(vfd);
1476 return v4l_enable_media_source(vfd);
1477 }
1478
1479 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1480 {
1481 if (a->index > 1)
1482 return -EINVAL;
1483
1484 dprintk(1, "%s called\n", __func__);
1485
1486 if (a->index == 0)
1487 strcpy(a->name, "Television");
1488 else
1489 strcpy(a->name, "Line in");
1490
1491 a->capability = V4L2_AUDCAP_STEREO;
1492 return 0;
1493 }
1494
1495 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1496 {
1497 struct au0828_dev *dev = video_drvdata(file);
1498
1499 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1500 dev->std_set_in_tuner_core, dev->dev_state);
1501
1502 a->index = dev->ctrl_ainput;
1503 if (a->index == 0)
1504 strcpy(a->name, "Television");
1505 else
1506 strcpy(a->name, "Line in");
1507
1508 a->capability = V4L2_AUDCAP_STEREO;
1509 return 0;
1510 }
1511
1512 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1513 {
1514 struct au0828_dev *dev = video_drvdata(file);
1515
1516 if (a->index != dev->ctrl_ainput)
1517 return -EINVAL;
1518
1519 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1520 dev->std_set_in_tuner_core, dev->dev_state);
1521 return 0;
1522 }
1523
1524 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1525 {
1526 struct au0828_dev *dev = video_drvdata(file);
1527 struct video_device *vfd = video_devdata(file);
1528 int ret;
1529
1530 if (t->index != 0)
1531 return -EINVAL;
1532
1533 ret = v4l_enable_media_source(vfd);
1534 if (ret)
1535 return ret;
1536
1537 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1538 dev->std_set_in_tuner_core, dev->dev_state);
1539
1540 strcpy(t->name, "Auvitek tuner");
1541
1542 au0828_init_tuner(dev);
1543 i2c_gate_ctrl(dev, 1);
1544 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1545 i2c_gate_ctrl(dev, 0);
1546 return 0;
1547 }
1548
1549 static int vidioc_s_tuner(struct file *file, void *priv,
1550 const struct v4l2_tuner *t)
1551 {
1552 struct au0828_dev *dev = video_drvdata(file);
1553
1554 if (t->index != 0)
1555 return -EINVAL;
1556
1557 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1558 dev->std_set_in_tuner_core, dev->dev_state);
1559
1560 au0828_init_tuner(dev);
1561 i2c_gate_ctrl(dev, 1);
1562 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1563 i2c_gate_ctrl(dev, 0);
1564
1565 dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1566 t->afc);
1567
1568 return 0;
1569
1570 }
1571
1572 static int vidioc_g_frequency(struct file *file, void *priv,
1573 struct v4l2_frequency *freq)
1574 {
1575 struct au0828_dev *dev = video_drvdata(file);
1576
1577 if (freq->tuner != 0)
1578 return -EINVAL;
1579 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1580 dev->std_set_in_tuner_core, dev->dev_state);
1581 freq->frequency = dev->ctrl_freq;
1582 return 0;
1583 }
1584
1585 static int vidioc_s_frequency(struct file *file, void *priv,
1586 const struct v4l2_frequency *freq)
1587 {
1588 struct au0828_dev *dev = video_drvdata(file);
1589 struct v4l2_frequency new_freq = *freq;
1590
1591 if (freq->tuner != 0)
1592 return -EINVAL;
1593
1594 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1595 dev->std_set_in_tuner_core, dev->dev_state);
1596
1597 au0828_init_tuner(dev);
1598 i2c_gate_ctrl(dev, 1);
1599
1600 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1601 /* Get the actual set (and possibly clamped) frequency */
1602 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1603 dev->ctrl_freq = new_freq.frequency;
1604
1605 i2c_gate_ctrl(dev, 0);
1606
1607 au0828_analog_stream_reset(dev);
1608
1609 return 0;
1610 }
1611
1612
1613 /* RAW VBI ioctls */
1614
1615 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1616 struct v4l2_format *format)
1617 {
1618 struct au0828_dev *dev = video_drvdata(file);
1619
1620 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1621 dev->std_set_in_tuner_core, dev->dev_state);
1622
1623 format->fmt.vbi.samples_per_line = dev->vbi_width;
1624 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1625 format->fmt.vbi.offset = 0;
1626 format->fmt.vbi.flags = 0;
1627 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1628
1629 format->fmt.vbi.count[0] = dev->vbi_height;
1630 format->fmt.vbi.count[1] = dev->vbi_height;
1631 format->fmt.vbi.start[0] = 21;
1632 format->fmt.vbi.start[1] = 284;
1633 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1634
1635 return 0;
1636 }
1637
1638 static int vidioc_cropcap(struct file *file, void *priv,
1639 struct v4l2_cropcap *cc)
1640 {
1641 struct au0828_dev *dev = video_drvdata(file);
1642
1643 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1644 return -EINVAL;
1645
1646 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1647 dev->std_set_in_tuner_core, dev->dev_state);
1648
1649 cc->bounds.left = 0;
1650 cc->bounds.top = 0;
1651 cc->bounds.width = dev->width;
1652 cc->bounds.height = dev->height;
1653
1654 cc->defrect = cc->bounds;
1655
1656 cc->pixelaspect.numerator = 54;
1657 cc->pixelaspect.denominator = 59;
1658
1659 return 0;
1660 }
1661
1662 #ifdef CONFIG_VIDEO_ADV_DEBUG
1663 static int vidioc_g_register(struct file *file, void *priv,
1664 struct v4l2_dbg_register *reg)
1665 {
1666 struct au0828_dev *dev = video_drvdata(file);
1667
1668 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1669 dev->std_set_in_tuner_core, dev->dev_state);
1670
1671 reg->val = au0828_read(dev, reg->reg);
1672 reg->size = 1;
1673 return 0;
1674 }
1675
1676 static int vidioc_s_register(struct file *file, void *priv,
1677 const struct v4l2_dbg_register *reg)
1678 {
1679 struct au0828_dev *dev = video_drvdata(file);
1680
1681 dprintk(1, "%s called std_set %d dev_state %d\n", __func__,
1682 dev->std_set_in_tuner_core, dev->dev_state);
1683
1684 return au0828_writereg(dev, reg->reg, reg->val);
1685 }
1686 #endif
1687
1688 static int vidioc_log_status(struct file *file, void *fh)
1689 {
1690 struct video_device *vdev = video_devdata(file);
1691
1692 dprintk(1, "%s called\n", __func__);
1693
1694 v4l2_ctrl_log_status(file, fh);
1695 v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1696 return 0;
1697 }
1698
1699 void au0828_v4l2_suspend(struct au0828_dev *dev)
1700 {
1701 struct urb *urb;
1702 int i;
1703
1704 pr_info("stopping V4L2\n");
1705
1706 if (dev->stream_state == STREAM_ON) {
1707 pr_info("stopping V4L2 active URBs\n");
1708 au0828_analog_stream_disable(dev);
1709 /* stop urbs */
1710 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1711 urb = dev->isoc_ctl.urb[i];
1712 if (urb) {
1713 if (!irqs_disabled())
1714 usb_kill_urb(urb);
1715 else
1716 usb_unlink_urb(urb);
1717 }
1718 }
1719 }
1720
1721 if (dev->vid_timeout_running)
1722 del_timer_sync(&dev->vid_timeout);
1723 if (dev->vbi_timeout_running)
1724 del_timer_sync(&dev->vbi_timeout);
1725 }
1726
1727 void au0828_v4l2_resume(struct au0828_dev *dev)
1728 {
1729 int i, rc;
1730
1731 pr_info("restarting V4L2\n");
1732
1733 if (dev->stream_state == STREAM_ON) {
1734 au0828_stream_interrupt(dev);
1735 au0828_init_tuner(dev);
1736 }
1737
1738 if (dev->vid_timeout_running)
1739 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1740 if (dev->vbi_timeout_running)
1741 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1742
1743 /* If we were doing ac97 instead of i2s, it would go here...*/
1744 au0828_i2s_init(dev);
1745
1746 au0828_analog_stream_enable(dev);
1747
1748 if (!(dev->stream_state == STREAM_ON)) {
1749 au0828_analog_stream_reset(dev);
1750 /* submit urbs */
1751 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1752 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1753 if (rc) {
1754 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1755 i, rc);
1756 au0828_uninit_isoc(dev);
1757 }
1758 }
1759 }
1760 }
1761
1762 static struct v4l2_file_operations au0828_v4l_fops = {
1763 .owner = THIS_MODULE,
1764 .open = au0828_v4l2_open,
1765 .release = au0828_v4l2_close,
1766 .read = vb2_fop_read,
1767 .poll = vb2_fop_poll,
1768 .mmap = vb2_fop_mmap,
1769 .unlocked_ioctl = video_ioctl2,
1770 };
1771
1772 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1773 .vidioc_querycap = vidioc_querycap,
1774 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1775 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1776 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1777 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1778 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1779 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1780 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1781 .vidioc_enumaudio = vidioc_enumaudio,
1782 .vidioc_g_audio = vidioc_g_audio,
1783 .vidioc_s_audio = vidioc_s_audio,
1784 .vidioc_cropcap = vidioc_cropcap,
1785
1786 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1787 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1788 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1789 .vidioc_querybuf = vb2_ioctl_querybuf,
1790 .vidioc_qbuf = vb2_ioctl_qbuf,
1791 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1792 .vidioc_expbuf = vb2_ioctl_expbuf,
1793
1794 .vidioc_s_std = vidioc_s_std,
1795 .vidioc_g_std = vidioc_g_std,
1796 .vidioc_enum_input = vidioc_enum_input,
1797 .vidioc_g_input = vidioc_g_input,
1798 .vidioc_s_input = vidioc_s_input,
1799
1800 .vidioc_streamon = vb2_ioctl_streamon,
1801 .vidioc_streamoff = vb2_ioctl_streamoff,
1802
1803 .vidioc_g_tuner = vidioc_g_tuner,
1804 .vidioc_s_tuner = vidioc_s_tuner,
1805 .vidioc_g_frequency = vidioc_g_frequency,
1806 .vidioc_s_frequency = vidioc_s_frequency,
1807 #ifdef CONFIG_VIDEO_ADV_DEBUG
1808 .vidioc_g_register = vidioc_g_register,
1809 .vidioc_s_register = vidioc_s_register,
1810 #endif
1811 .vidioc_log_status = vidioc_log_status,
1812 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1813 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1814 };
1815
1816 static const struct video_device au0828_video_template = {
1817 .fops = &au0828_v4l_fops,
1818 .release = video_device_release_empty,
1819 .ioctl_ops = &video_ioctl_ops,
1820 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1821 };
1822
1823 static int au0828_vb2_setup(struct au0828_dev *dev)
1824 {
1825 int rc;
1826 struct vb2_queue *q;
1827
1828 /* Setup Videobuf2 for Video capture */
1829 q = &dev->vb_vidq;
1830 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1831 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1832 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1833 q->drv_priv = dev;
1834 q->buf_struct_size = sizeof(struct au0828_buffer);
1835 q->ops = &au0828_video_qops;
1836 q->mem_ops = &vb2_vmalloc_memops;
1837
1838 rc = vb2_queue_init(q);
1839 if (rc < 0)
1840 return rc;
1841
1842 /* Setup Videobuf2 for VBI capture */
1843 q = &dev->vb_vbiq;
1844 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1845 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1846 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1847 q->drv_priv = dev;
1848 q->buf_struct_size = sizeof(struct au0828_buffer);
1849 q->ops = &au0828_vbi_qops;
1850 q->mem_ops = &vb2_vmalloc_memops;
1851
1852 rc = vb2_queue_init(q);
1853 if (rc < 0)
1854 return rc;
1855
1856 return 0;
1857 }
1858
1859 static void au0828_analog_create_entities(struct au0828_dev *dev)
1860 {
1861 #if defined(CONFIG_MEDIA_CONTROLLER)
1862 static const char * const inames[] = {
1863 [AU0828_VMUX_COMPOSITE] = "Composite",
1864 [AU0828_VMUX_SVIDEO] = "S-Video",
1865 [AU0828_VMUX_CABLE] = "Cable TV",
1866 [AU0828_VMUX_TELEVISION] = "Television",
1867 [AU0828_VMUX_DVB] = "DVB",
1868 };
1869 int ret, i;
1870
1871 /* Initialize Video and VBI pads */
1872 dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1873 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1874 if (ret < 0)
1875 pr_err("failed to initialize video media entity!\n");
1876
1877 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1878 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1879 if (ret < 0)
1880 pr_err("failed to initialize vbi media entity!\n");
1881
1882 /* Create entities for each input connector */
1883 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1884 struct media_entity *ent = &dev->input_ent[i];
1885
1886 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1887 break;
1888
1889 ent->name = inames[AUVI_INPUT(i).type];
1890 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1891 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1892
1893 switch (AUVI_INPUT(i).type) {
1894 case AU0828_VMUX_COMPOSITE:
1895 ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1896 break;
1897 case AU0828_VMUX_SVIDEO:
1898 ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1899 break;
1900 case AU0828_VMUX_CABLE:
1901 case AU0828_VMUX_TELEVISION:
1902 case AU0828_VMUX_DVB:
1903 default: /* Just to shut up a warning */
1904 ent->function = MEDIA_ENT_F_CONN_RF;
1905 break;
1906 }
1907
1908 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1909 if (ret < 0)
1910 pr_err("failed to initialize input pad[%d]!\n", i);
1911
1912 ret = media_device_register_entity(dev->media_dev, ent);
1913 if (ret < 0)
1914 pr_err("failed to register input entity %d!\n", i);
1915 }
1916 #endif
1917 }
1918
1919 /**************************************************************************/
1920
1921 int au0828_analog_register(struct au0828_dev *dev,
1922 struct usb_interface *interface)
1923 {
1924 int retval = -ENOMEM;
1925 struct usb_host_interface *iface_desc;
1926 struct usb_endpoint_descriptor *endpoint;
1927 int i, ret;
1928
1929 dprintk(1, "au0828_analog_register called for intf#%d!\n",
1930 interface->cur_altsetting->desc.bInterfaceNumber);
1931
1932 /* No analog TV */
1933 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1934 return 0;
1935
1936 /* set au0828 usb interface0 to as5 */
1937 retval = usb_set_interface(dev->usbdev,
1938 interface->cur_altsetting->desc.bInterfaceNumber, 5);
1939 if (retval != 0) {
1940 pr_info("Failure setting usb interface0 to as5\n");
1941 return retval;
1942 }
1943
1944 /* Figure out which endpoint has the isoc interface */
1945 iface_desc = interface->cur_altsetting;
1946 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1947 endpoint = &iface_desc->endpoint[i].desc;
1948 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1949 == USB_DIR_IN) &&
1950 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1951 == USB_ENDPOINT_XFER_ISOC)) {
1952
1953 /* we find our isoc in endpoint */
1954 u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1955 dev->max_pkt_size = (tmp & 0x07ff) *
1956 (((tmp & 0x1800) >> 11) + 1);
1957 dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1958 dprintk(1,
1959 "Found isoc endpoint 0x%02x, max size = %d\n",
1960 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1961 }
1962 }
1963 if (!(dev->isoc_in_endpointaddr)) {
1964 pr_info("Could not locate isoc endpoint\n");
1965 return -ENODEV;
1966 }
1967
1968 init_waitqueue_head(&dev->open);
1969 spin_lock_init(&dev->slock);
1970
1971 /* init video dma queues */
1972 INIT_LIST_HEAD(&dev->vidq.active);
1973 INIT_LIST_HEAD(&dev->vbiq.active);
1974
1975 setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1976 (unsigned long)dev);
1977 setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1978 (unsigned long)dev);
1979
1980 dev->width = NTSC_STD_W;
1981 dev->height = NTSC_STD_H;
1982 dev->field_size = dev->width * dev->height;
1983 dev->frame_size = dev->field_size << 1;
1984 dev->bytesperline = dev->width << 1;
1985 dev->vbi_width = 720;
1986 dev->vbi_height = 1;
1987 dev->ctrl_ainput = 0;
1988 dev->ctrl_freq = 960;
1989 dev->std = V4L2_STD_NTSC_M;
1990 /* Default input is TV Tuner */
1991 au0828_s_input(dev, 0);
1992
1993 mutex_init(&dev->vb_queue_lock);
1994 mutex_init(&dev->vb_vbi_queue_lock);
1995
1996 /* Fill the video capture device struct */
1997 dev->vdev = au0828_video_template;
1998 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1999 dev->vdev.lock = &dev->lock;
2000 dev->vdev.queue = &dev->vb_vidq;
2001 dev->vdev.queue->lock = &dev->vb_queue_lock;
2002 strcpy(dev->vdev.name, "au0828a video");
2003
2004 /* Setup the VBI device */
2005 dev->vbi_dev = au0828_video_template;
2006 dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
2007 dev->vbi_dev.lock = &dev->lock;
2008 dev->vbi_dev.queue = &dev->vb_vbiq;
2009 dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
2010 strcpy(dev->vbi_dev.name, "au0828a vbi");
2011
2012 /* Init entities at the Media Controller */
2013 au0828_analog_create_entities(dev);
2014
2015 /* initialize videobuf2 stuff */
2016 retval = au0828_vb2_setup(dev);
2017 if (retval != 0) {
2018 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2019 retval);
2020 return -ENODEV;
2021 }
2022
2023 /* Register the v4l2 device */
2024 video_set_drvdata(&dev->vdev, dev);
2025 retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2026 if (retval != 0) {
2027 dprintk(1, "unable to register video device (error = %d).\n",
2028 retval);
2029 ret = -ENODEV;
2030 goto err_reg_vdev;
2031 }
2032
2033 /* Register the vbi device */
2034 video_set_drvdata(&dev->vbi_dev, dev);
2035 retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2036 if (retval != 0) {
2037 dprintk(1, "unable to register vbi device (error = %d).\n",
2038 retval);
2039 ret = -ENODEV;
2040 goto err_reg_vbi_dev;
2041 }
2042
2043 #ifdef CONFIG_MEDIA_CONTROLLER
2044 retval = v4l2_mc_create_media_graph(dev->media_dev);
2045 if (retval) {
2046 pr_err("%s() au0282_dev_register failed to create graph\n",
2047 __func__);
2048 ret = -ENODEV;
2049 goto err_reg_vbi_dev;
2050 }
2051 #endif
2052
2053 dprintk(1, "%s completed!\n", __func__);
2054
2055 return 0;
2056
2057 err_reg_vbi_dev:
2058 video_unregister_device(&dev->vdev);
2059 err_reg_vdev:
2060 vb2_queue_release(&dev->vb_vidq);
2061 vb2_queue_release(&dev->vb_vbiq);
2062 return ret;
2063 }
2064
Linux kernel - Deliverables
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