projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
fb: adv7393: off by one in probe function
[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_isocdbg("cannot alloc isoc_ctl.urb %i\n", i);
249 au0828_uninit_isoc(dev);
250 return -ENOMEM;
251 }
252 dev->isoc_ctl.urb[i] = urb;
253
254 dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
255 sb_size, GFP_KERNEL, &urb->transfer_dma);
256 if (!dev->isoc_ctl.transfer_buffer[i]) {
257 printk("unable to allocate %i bytes for transfer"
258 " buffer %i%s\n",
259 sb_size, i,
260 in_interrupt() ? " while in int" : "");
261 au0828_uninit_isoc(dev);
262 return -ENOMEM;
263 }
264 memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
265
266 pipe = usb_rcvisocpipe(dev->usbdev,
267 dev->isoc_in_endpointaddr),
268
269 usb_fill_int_urb(urb, dev->usbdev, pipe,
270 dev->isoc_ctl.transfer_buffer[i], sb_size,
271 au0828_irq_callback, dma_q, 1);
272
273 urb->number_of_packets = max_packets;
274 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
275
276 k = 0;
277 for (j = 0; j < max_packets; j++) {
278 urb->iso_frame_desc[j].offset = k;
279 urb->iso_frame_desc[j].length =
280 dev->isoc_ctl.max_pkt_size;
281 k += dev->isoc_ctl.max_pkt_size;
282 }
283 }
284
285 /* submit urbs and enables IRQ */
286 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
287 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
288 if (rc) {
289 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
290 i, rc);
291 au0828_uninit_isoc(dev);
292 return rc;
293 }
294 }
295
296 return 0;
297 }
298
299 /*
300 * Announces that a buffer were filled and request the next
301 */
302 static inline void buffer_filled(struct au0828_dev *dev,
303 struct au0828_dmaqueue *dma_q,
304 struct au0828_buffer *buf)
305 {
306 struct vb2_v4l2_buffer *vb = &buf->vb;
307 struct vb2_queue *q = vb->vb2_buf.vb2_queue;
308
309 /* Advice that buffer was filled */
310 au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
311
312 if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
313 vb->sequence = dev->frame_count++;
314 else
315 vb->sequence = dev->vbi_frame_count++;
316
317 vb->field = V4L2_FIELD_INTERLACED;
318 vb->vb2_buf.timestamp = ktime_get_ns();
319 vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
320 }
321
322 /*
323 * Identify the buffer header type and properly handles
324 */
325 static void au0828_copy_video(struct au0828_dev *dev,
326 struct au0828_dmaqueue *dma_q,
327 struct au0828_buffer *buf,
328 unsigned char *p,
329 unsigned char *outp, unsigned long len)
330 {
331 void *fieldstart, *startwrite, *startread;
332 int linesdone, currlinedone, offset, lencopy, remain;
333 int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
334
335 if (len == 0)
336 return;
337
338 if (dma_q->pos + len > buf->length)
339 len = buf->length - dma_q->pos;
340
341 startread = p;
342 remain = len;
343
344 /* Interlaces frame */
345 if (buf->top_field)
346 fieldstart = outp;
347 else
348 fieldstart = outp + bytesperline;
349
350 linesdone = dma_q->pos / bytesperline;
351 currlinedone = dma_q->pos % bytesperline;
352 offset = linesdone * bytesperline * 2 + currlinedone;
353 startwrite = fieldstart + offset;
354 lencopy = bytesperline - currlinedone;
355 lencopy = lencopy > remain ? remain : lencopy;
356
357 if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
358 au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
359 ((char *)startwrite + lencopy) -
360 ((char *)outp + buf->length));
361 remain = (char *)outp + buf->length - (char *)startwrite;
362 lencopy = remain;
363 }
364 if (lencopy <= 0)
365 return;
366 memcpy(startwrite, startread, lencopy);
367
368 remain -= lencopy;
369
370 while (remain > 0) {
371 startwrite += lencopy + bytesperline;
372 startread += lencopy;
373 if (bytesperline > remain)
374 lencopy = remain;
375 else
376 lencopy = bytesperline;
377
378 if ((char *)startwrite + lencopy > (char *)outp +
379 buf->length) {
380 au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
381 ((char *)startwrite + lencopy) -
382 ((char *)outp + buf->length));
383 lencopy = remain = (char *)outp + buf->length -
384 (char *)startwrite;
385 }
386 if (lencopy <= 0)
387 break;
388
389 memcpy(startwrite, startread, lencopy);
390
391 remain -= lencopy;
392 }
393
394 if (offset > 1440) {
395 /* We have enough data to check for greenscreen */
396 if (outp[0] < 0x60 && outp[1440] < 0x60)
397 dev->greenscreen_detected = 1;
398 }
399
400 dma_q->pos += len;
401 }
402
403 /*
404 * video-buf generic routine to get the next available buffer
405 */
406 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
407 struct au0828_buffer **buf)
408 {
409 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
410
411 if (list_empty(&dma_q->active)) {
412 au0828_isocdbg("No active queue to serve\n");
413 dev->isoc_ctl.buf = NULL;
414 *buf = NULL;
415 return;
416 }
417
418 /* Get the next buffer */
419 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
420 /* Cleans up buffer - Useful for testing for frame/URB loss */
421 list_del(&(*buf)->list);
422 dma_q->pos = 0;
423 (*buf)->vb_buf = (*buf)->mem;
424 dev->isoc_ctl.buf = *buf;
425
426 return;
427 }
428
429 static void au0828_copy_vbi(struct au0828_dev *dev,
430 struct au0828_dmaqueue *dma_q,
431 struct au0828_buffer *buf,
432 unsigned char *p,
433 unsigned char *outp, unsigned long len)
434 {
435 unsigned char *startwrite, *startread;
436 int bytesperline;
437 int i, j = 0;
438
439 if (dev == NULL) {
440 au0828_isocdbg("dev is null\n");
441 return;
442 }
443
444 if (dma_q == NULL) {
445 au0828_isocdbg("dma_q is null\n");
446 return;
447 }
448 if (buf == NULL)
449 return;
450 if (p == NULL) {
451 au0828_isocdbg("p is null\n");
452 return;
453 }
454 if (outp == NULL) {
455 au0828_isocdbg("outp is null\n");
456 return;
457 }
458
459 bytesperline = dev->vbi_width;
460
461 if (dma_q->pos + len > buf->length)
462 len = buf->length - dma_q->pos;
463
464 startread = p;
465 startwrite = outp + (dma_q->pos / 2);
466
467 /* Make sure the bottom field populates the second half of the frame */
468 if (buf->top_field == 0)
469 startwrite += bytesperline * dev->vbi_height;
470
471 for (i = 0; i < len; i += 2)
472 startwrite[j++] = startread[i+1];
473
474 dma_q->pos += len;
475 }
476
477
478 /*
479 * video-buf generic routine to get the next available VBI buffer
480 */
481 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
482 struct au0828_buffer **buf)
483 {
484 struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
485
486 if (list_empty(&dma_q->active)) {
487 au0828_isocdbg("No active queue to serve\n");
488 dev->isoc_ctl.vbi_buf = NULL;
489 *buf = NULL;
490 return;
491 }
492
493 /* Get the next buffer */
494 *buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
495 /* Cleans up buffer - Useful for testing for frame/URB loss */
496 list_del(&(*buf)->list);
497 dma_q->pos = 0;
498 (*buf)->vb_buf = (*buf)->mem;
499 dev->isoc_ctl.vbi_buf = *buf;
500 return;
501 }
502
503 /*
504 * Controls the isoc copy of each urb packet
505 */
506 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
507 {
508 struct au0828_buffer *buf;
509 struct au0828_buffer *vbi_buf;
510 struct au0828_dmaqueue *dma_q = urb->context;
511 struct au0828_dmaqueue *vbi_dma_q = &dev->vbiq;
512 unsigned char *outp = NULL;
513 unsigned char *vbioutp = NULL;
514 int i, len = 0, rc = 1;
515 unsigned char *p;
516 unsigned char fbyte;
517 unsigned int vbi_field_size;
518 unsigned int remain, lencopy;
519
520 if (!dev)
521 return 0;
522
523 if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
524 test_bit(DEV_MISCONFIGURED, &dev->dev_state))
525 return 0;
526
527 if (urb->status < 0) {
528 print_err_status(dev, -1, urb->status);
529 if (urb->status == -ENOENT)
530 return 0;
531 }
532
533 buf = dev->isoc_ctl.buf;
534 if (buf != NULL)
535 outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
536
537 vbi_buf = dev->isoc_ctl.vbi_buf;
538 if (vbi_buf != NULL)
539 vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
540
541 for (i = 0; i < urb->number_of_packets; i++) {
542 int status = urb->iso_frame_desc[i].status;
543
544 if (status < 0) {
545 print_err_status(dev, i, status);
546 if (urb->iso_frame_desc[i].status != -EPROTO)
547 continue;
548 }
549
550 if (urb->iso_frame_desc[i].actual_length <= 0)
551 continue;
552
553 if (urb->iso_frame_desc[i].actual_length >
554 dev->max_pkt_size) {
555 au0828_isocdbg("packet bigger than packet size");
556 continue;
557 }
558
559 p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
560 fbyte = p[0];
561 len = urb->iso_frame_desc[i].actual_length - 4;
562 p += 4;
563
564 if (fbyte & 0x80) {
565 len -= 4;
566 p += 4;
567 au0828_isocdbg("Video frame %s\n",
568 (fbyte & 0x40) ? "odd" : "even");
569 if (fbyte & 0x40) {
570 /* VBI */
571 if (vbi_buf != NULL)
572 buffer_filled(dev, vbi_dma_q, vbi_buf);
573 vbi_get_next_buf(vbi_dma_q, &vbi_buf);
574 if (vbi_buf == NULL)
575 vbioutp = NULL;
576 else
577 vbioutp = vb2_plane_vaddr(
578 &vbi_buf->vb.vb2_buf, 0);
579
580 /* Video */
581 if (buf != NULL)
582 buffer_filled(dev, dma_q, buf);
583 get_next_buf(dma_q, &buf);
584 if (buf == NULL)
585 outp = NULL;
586 else
587 outp = vb2_plane_vaddr(
588 &buf->vb.vb2_buf, 0);
589
590 /* As long as isoc traffic is arriving, keep
591 resetting the timer */
592 if (dev->vid_timeout_running)
593 mod_timer(&dev->vid_timeout,
594 jiffies + (HZ / 10));
595 if (dev->vbi_timeout_running)
596 mod_timer(&dev->vbi_timeout,
597 jiffies + (HZ / 10));
598 }
599
600 if (buf != NULL) {
601 if (fbyte & 0x40)
602 buf->top_field = 1;
603 else
604 buf->top_field = 0;
605 }
606
607 if (vbi_buf != NULL) {
608 if (fbyte & 0x40)
609 vbi_buf->top_field = 1;
610 else
611 vbi_buf->top_field = 0;
612 }
613
614 dev->vbi_read = 0;
615 vbi_dma_q->pos = 0;
616 dma_q->pos = 0;
617 }
618
619 vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
620 if (dev->vbi_read < vbi_field_size) {
621 remain = vbi_field_size - dev->vbi_read;
622 if (len < remain)
623 lencopy = len;
624 else
625 lencopy = remain;
626
627 if (vbi_buf != NULL)
628 au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
629 vbioutp, len);
630
631 len -= lencopy;
632 p += lencopy;
633 dev->vbi_read += lencopy;
634 }
635
636 if (dev->vbi_read >= vbi_field_size && buf != NULL)
637 au0828_copy_video(dev, dma_q, buf, p, outp, len);
638 }
639 return rc;
640 }
641
642 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
643 {
644 #ifdef CONFIG_MEDIA_CONTROLLER
645 int i;
646
647 for (i = 0; i < AU0828_MAX_INPUT; i++) {
648 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
649 return;
650 media_device_unregister_entity(&dev->input_ent[i]);
651 }
652 #endif
653 }
654
655 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
656 {
657 struct au0828_dev *dev =
658 container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
659
660 v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
661 v4l2_device_unregister(&dev->v4l2_dev);
662 au0828_usb_v4l2_media_release(dev);
663 au0828_usb_release(dev);
664 }
665
666 int au0828_v4l2_device_register(struct usb_interface *interface,
667 struct au0828_dev *dev)
668 {
669 int retval;
670
671 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
672 return 0;
673
674 /* Create the v4l2_device */
675 #ifdef CONFIG_MEDIA_CONTROLLER
676 dev->v4l2_dev.mdev = dev->media_dev;
677 #endif
678 retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
679 if (retval) {
680 pr_err("%s() v4l2_device_register failed\n",
681 __func__);
682 return retval;
683 }
684
685 dev->v4l2_dev.release = au0828_usb_v4l2_release;
686
687 /* This control handler will inherit the controls from au8522 */
688 retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
689 if (retval) {
690 pr_err("%s() v4l2_ctrl_handler_init failed\n",
691 __func__);
692 return retval;
693 }
694 dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
695
696 return 0;
697 }
698
699 static int queue_setup(struct vb2_queue *vq,
700 unsigned int *nbuffers, unsigned int *nplanes,
701 unsigned int sizes[], struct device *alloc_devs[])
702 {
703 struct au0828_dev *dev = vb2_get_drv_priv(vq);
704 unsigned long size = dev->height * dev->bytesperline;
705
706 if (*nplanes)
707 return sizes[0] < size ? -EINVAL : 0;
708 *nplanes = 1;
709 sizes[0] = size;
710 return 0;
711 }
712
713 static int
714 buffer_prepare(struct vb2_buffer *vb)
715 {
716 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
717 struct au0828_buffer *buf = container_of(vbuf,
718 struct au0828_buffer, vb);
719 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
720
721 buf->length = dev->height * dev->bytesperline;
722
723 if (vb2_plane_size(vb, 0) < buf->length) {
724 pr_err("%s data will not fit into plane (%lu < %lu)\n",
725 __func__, vb2_plane_size(vb, 0), buf->length);
726 return -EINVAL;
727 }
728 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
729 return 0;
730 }
731
732 static void
733 buffer_queue(struct vb2_buffer *vb)
734 {
735 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
736 struct au0828_buffer *buf = container_of(vbuf,
737 struct au0828_buffer,
738 vb);
739 struct au0828_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
740 struct au0828_dmaqueue *vidq = &dev->vidq;
741 unsigned long flags = 0;
742
743 buf->mem = vb2_plane_vaddr(vb, 0);
744 buf->length = vb2_plane_size(vb, 0);
745
746 spin_lock_irqsave(&dev->slock, flags);
747 list_add_tail(&buf->list, &vidq->active);
748 spin_unlock_irqrestore(&dev->slock, flags);
749 }
750
751 static int au0828_i2s_init(struct au0828_dev *dev)
752 {
753 /* Enable i2s mode */
754 au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
755 return 0;
756 }
757
758 /*
759 * Auvitek au0828 analog stream enable
760 */
761 static int au0828_analog_stream_enable(struct au0828_dev *d)
762 {
763 struct usb_interface *iface;
764 int ret, h, w;
765
766 dprintk(1, "au0828_analog_stream_enable called\n");
767
768 iface = usb_ifnum_to_if(d->usbdev, 0);
769 if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
770 dprintk(1, "Changing intf#0 to alt 5\n");
771 /* set au0828 interface0 to AS5 here again */
772 ret = usb_set_interface(d->usbdev, 0, 5);
773 if (ret < 0) {
774 pr_info("Au0828 can't set alt setting to 5!\n");
775 return -EBUSY;
776 }
777 }
778
779 h = d->height / 2 + 2;
780 w = d->width * 2;
781
782 au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
783 au0828_writereg(d, 0x106, 0x00);
784 /* set x position */
785 au0828_writereg(d, 0x110, 0x00);
786 au0828_writereg(d, 0x111, 0x00);
787 au0828_writereg(d, 0x114, w & 0xff);
788 au0828_writereg(d, 0x115, w >> 8);
789 /* set y position */
790 au0828_writereg(d, 0x112, 0x00);
791 au0828_writereg(d, 0x113, 0x00);
792 au0828_writereg(d, 0x116, h & 0xff);
793 au0828_writereg(d, 0x117, h >> 8);
794 au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
795
796 return 0;
797 }
798
799 static int au0828_analog_stream_disable(struct au0828_dev *d)
800 {
801 dprintk(1, "au0828_analog_stream_disable called\n");
802 au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
803 return 0;
804 }
805
806 static void au0828_analog_stream_reset(struct au0828_dev *dev)
807 {
808 dprintk(1, "au0828_analog_stream_reset called\n");
809 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
810 mdelay(30);
811 au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
812 }
813
814 /*
815 * Some operations needs to stop current streaming
816 */
817 static int au0828_stream_interrupt(struct au0828_dev *dev)
818 {
819 int ret = 0;
820
821 dev->stream_state = STREAM_INTERRUPT;
822 if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
823 return -ENODEV;
824 else if (ret) {
825 set_bit(DEV_MISCONFIGURED, &dev->dev_state);
826 dprintk(1, "%s device is misconfigured!\n", __func__);
827 return ret;
828 }
829 return 0;
830 }
831
832 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
833 {
834 struct au0828_dev *dev = vb2_get_drv_priv(vq);
835 int rc = 0;
836
837 dprintk(1, "au0828_start_analog_streaming called %d\n",
838 dev->streaming_users);
839
840 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
841 dev->frame_count = 0;
842 else
843 dev->vbi_frame_count = 0;
844
845 if (dev->streaming_users == 0) {
846 /* If we were doing ac97 instead of i2s, it would go here...*/
847 au0828_i2s_init(dev);
848 rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
849 AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
850 au0828_isoc_copy);
851 if (rc < 0) {
852 pr_info("au0828_init_isoc failed\n");
853 return rc;
854 }
855
856 if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
857 v4l2_device_call_all(&dev->v4l2_dev, 0, video,
858 s_stream, 1);
859 dev->vid_timeout_running = 1;
860 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
861 } else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
862 dev->vbi_timeout_running = 1;
863 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
864 }
865 }
866 dev->streaming_users++;
867 return rc;
868 }
869
870 static void au0828_stop_streaming(struct vb2_queue *vq)
871 {
872 struct au0828_dev *dev = vb2_get_drv_priv(vq);
873 struct au0828_dmaqueue *vidq = &dev->vidq;
874 unsigned long flags = 0;
875
876 dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
877
878 if (dev->streaming_users-- == 1)
879 au0828_uninit_isoc(dev);
880
881 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
882 dev->vid_timeout_running = 0;
883 del_timer_sync(&dev->vid_timeout);
884
885 spin_lock_irqsave(&dev->slock, flags);
886 if (dev->isoc_ctl.buf != NULL) {
887 vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
888 VB2_BUF_STATE_ERROR);
889 dev->isoc_ctl.buf = NULL;
890 }
891 while (!list_empty(&vidq->active)) {
892 struct au0828_buffer *buf;
893
894 buf = list_entry(vidq->active.next, struct au0828_buffer, list);
895 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
896 list_del(&buf->list);
897 }
898 spin_unlock_irqrestore(&dev->slock, flags);
899 }
900
901 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
902 {
903 struct au0828_dev *dev = vb2_get_drv_priv(vq);
904 struct au0828_dmaqueue *vbiq = &dev->vbiq;
905 unsigned long flags = 0;
906
907 dprintk(1, "au0828_stop_vbi_streaming called %d\n",
908 dev->streaming_users);
909
910 if (dev->streaming_users-- == 1)
911 au0828_uninit_isoc(dev);
912
913 spin_lock_irqsave(&dev->slock, flags);
914 if (dev->isoc_ctl.vbi_buf != NULL) {
915 vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
916 VB2_BUF_STATE_ERROR);
917 dev->isoc_ctl.vbi_buf = NULL;
918 }
919 while (!list_empty(&vbiq->active)) {
920 struct au0828_buffer *buf;
921
922 buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
923 list_del(&buf->list);
924 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
925 }
926 spin_unlock_irqrestore(&dev->slock, flags);
927
928 dev->vbi_timeout_running = 0;
929 del_timer_sync(&dev->vbi_timeout);
930 }
931
932 static struct vb2_ops au0828_video_qops = {
933 .queue_setup = queue_setup,
934 .buf_prepare = buffer_prepare,
935 .buf_queue = buffer_queue,
936 .start_streaming = au0828_start_analog_streaming,
937 .stop_streaming = au0828_stop_streaming,
938 .wait_prepare = vb2_ops_wait_prepare,
939 .wait_finish = vb2_ops_wait_finish,
940 };
941
942 /* ------------------------------------------------------------------
943 V4L2 interface
944 ------------------------------------------------------------------*/
945 /*
946 * au0828_analog_unregister
947 * unregister v4l2 devices
948 */
949 int au0828_analog_unregister(struct au0828_dev *dev)
950 {
951 dprintk(1, "au0828_analog_unregister called\n");
952
953 /* No analog TV */
954 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
955 return 0;
956
957 mutex_lock(&au0828_sysfs_lock);
958 video_unregister_device(&dev->vdev);
959 video_unregister_device(&dev->vbi_dev);
960 mutex_unlock(&au0828_sysfs_lock);
961
962 v4l2_device_disconnect(&dev->v4l2_dev);
963 v4l2_device_put(&dev->v4l2_dev);
964
965 return 1;
966 }
967
968 /* This function ensures that video frames continue to be delivered even if
969 the ITU-656 input isn't receiving any data (thereby preventing applications
970 such as tvtime from hanging) */
971 static void au0828_vid_buffer_timeout(unsigned long data)
972 {
973 struct au0828_dev *dev = (struct au0828_dev *) data;
974 struct au0828_dmaqueue *dma_q = &dev->vidq;
975 struct au0828_buffer *buf;
976 unsigned char *vid_data;
977 unsigned long flags = 0;
978
979 spin_lock_irqsave(&dev->slock, flags);
980
981 buf = dev->isoc_ctl.buf;
982 if (buf != NULL) {
983 vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
984 memset(vid_data, 0x00, buf->length); /* Blank green frame */
985 buffer_filled(dev, dma_q, buf);
986 }
987 get_next_buf(dma_q, &buf);
988
989 if (dev->vid_timeout_running == 1)
990 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
991
992 spin_unlock_irqrestore(&dev->slock, flags);
993 }
994
995 static void au0828_vbi_buffer_timeout(unsigned long data)
996 {
997 struct au0828_dev *dev = (struct au0828_dev *) data;
998 struct au0828_dmaqueue *dma_q = &dev->vbiq;
999 struct au0828_buffer *buf;
1000 unsigned char *vbi_data;
1001 unsigned long flags = 0;
1002
1003 spin_lock_irqsave(&dev->slock, flags);
1004
1005 buf = dev->isoc_ctl.vbi_buf;
1006 if (buf != NULL) {
1007 vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1008 memset(vbi_data, 0x00, buf->length);
1009 buffer_filled(dev, dma_q, buf);
1010 }
1011 vbi_get_next_buf(dma_q, &buf);
1012
1013 if (dev->vbi_timeout_running == 1)
1014 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1015 spin_unlock_irqrestore(&dev->slock, flags);
1016 }
1017
1018 static int au0828_v4l2_open(struct file *filp)
1019 {
1020 struct au0828_dev *dev = video_drvdata(filp);
1021 int ret;
1022
1023 dprintk(1,
1024 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1025 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1026 dev->streaming_users, dev->users);
1027
1028 if (mutex_lock_interruptible(&dev->lock))
1029 return -ERESTARTSYS;
1030
1031 ret = v4l2_fh_open(filp);
1032 if (ret) {
1033 au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1034 __func__, ret);
1035 mutex_unlock(&dev->lock);
1036 return ret;
1037 }
1038
1039 if (dev->users == 0) {
1040 au0828_analog_stream_enable(dev);
1041 au0828_analog_stream_reset(dev);
1042 dev->stream_state = STREAM_OFF;
1043 set_bit(DEV_INITIALIZED, &dev->dev_state);
1044 }
1045 dev->users++;
1046 mutex_unlock(&dev->lock);
1047 return ret;
1048 }
1049
1050 static int au0828_v4l2_close(struct file *filp)
1051 {
1052 int ret;
1053 struct au0828_dev *dev = video_drvdata(filp);
1054 struct video_device *vdev = video_devdata(filp);
1055
1056 dprintk(1,
1057 "%s called std_set %d dev_state %ld stream users %d users %d\n",
1058 __func__, dev->std_set_in_tuner_core, dev->dev_state,
1059 dev->streaming_users, dev->users);
1060
1061 mutex_lock(&dev->lock);
1062 if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1063 /* Cancel timeout thread in case they didn't call streamoff */
1064 dev->vid_timeout_running = 0;
1065 del_timer_sync(&dev->vid_timeout);
1066 } else if (vdev->vfl_type == VFL_TYPE_VBI &&
1067 dev->vbi_timeout_running) {
1068 /* Cancel timeout thread in case they didn't call streamoff */
1069 dev->vbi_timeout_running = 0;
1070 del_timer_sync(&dev->vbi_timeout);
1071 }
1072
1073 if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1074 goto end;
1075
1076 if (dev->users == 1) {
1077 /*
1078 * Avoid putting tuner in sleep if DVB or ALSA are
1079 * streaming.
1080 *
1081 * On most USB devices like au0828 the tuner can
1082 * be safely put in sleep stare here if ALSA isn't
1083 * streaming. Exceptions are some very old USB tuner
1084 * models such as em28xx-based WinTV USB2 which have
1085 * a separate audio output jack. The devices that have
1086 * a separate audio output jack have analog tuners,
1087 * like Philips FM1236. Those devices are always on,
1088 * so the s_power callback are silently ignored.
1089 * So, the current logic here does the following:
1090 * Disable (put tuner to sleep) when
1091 * - ALSA and DVB aren't not streaming;
1092 * - the last V4L2 file handler is closed.
1093 *
1094 * FIXME:
1095 *
1096 * Additionally, this logic could be improved to
1097 * disable the media source if the above conditions
1098 * are met and if the device:
1099 * - doesn't have a separate audio out plug (or
1100 * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1101 *
1102 * Once this additional logic is in place, a callback
1103 * is needed to enable the media source and power on
1104 * the tuner, for radio to work.
1105 */
1106 ret = v4l_enable_media_source(vdev);
1107 if (ret == 0)
1108 v4l2_device_call_all(&dev->v4l2_dev, 0, core,
1109 s_power, 0);
1110 dev->std_set_in_tuner_core = 0;
1111
1112 /* When close the device, set the usb intf0 into alt0 to free
1113 USB bandwidth */
1114 ret = usb_set_interface(dev->usbdev, 0, 0);
1115 if (ret < 0)
1116 pr_info("Au0828 can't set alternate to 0!\n");
1117 }
1118 end:
1119 _vb2_fop_release(filp, NULL);
1120 dev->users--;
1121 mutex_unlock(&dev->lock);
1122 return 0;
1123 }
1124
1125 /* Must be called with dev->lock held */
1126 static void au0828_init_tuner(struct au0828_dev *dev)
1127 {
1128 struct v4l2_frequency f = {
1129 .frequency = dev->ctrl_freq,
1130 .type = V4L2_TUNER_ANALOG_TV,
1131 };
1132
1133 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1134 dev->std_set_in_tuner_core, dev->dev_state);
1135
1136 if (dev->std_set_in_tuner_core)
1137 return;
1138 dev->std_set_in_tuner_core = 1;
1139 i2c_gate_ctrl(dev, 1);
1140 /* If we've never sent the standard in tuner core, do so now.
1141 We don't do this at device probe because we don't want to
1142 incur the cost of a firmware load */
1143 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1144 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1145 i2c_gate_ctrl(dev, 0);
1146 }
1147
1148 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1149 struct v4l2_format *format)
1150 {
1151 int ret;
1152 int width = format->fmt.pix.width;
1153 int height = format->fmt.pix.height;
1154
1155 /* If they are demanding a format other than the one we support,
1156 bail out (tvtime asks for UYVY and then retries with YUYV) */
1157 if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1158 return -EINVAL;
1159
1160 /* format->fmt.pix.width only support 720 and height 480 */
1161 if (width != 720)
1162 width = 720;
1163 if (height != 480)
1164 height = 480;
1165
1166 format->fmt.pix.width = width;
1167 format->fmt.pix.height = height;
1168 format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1169 format->fmt.pix.bytesperline = width * 2;
1170 format->fmt.pix.sizeimage = width * height * 2;
1171 format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1172 format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1173 format->fmt.pix.priv = 0;
1174
1175 if (cmd == VIDIOC_TRY_FMT)
1176 return 0;
1177
1178 /* maybe set new image format, driver current only support 720*480 */
1179 dev->width = width;
1180 dev->height = height;
1181 dev->frame_size = width * height * 2;
1182 dev->field_size = width * height;
1183 dev->bytesperline = width * 2;
1184
1185 if (dev->stream_state == STREAM_ON) {
1186 dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1187 ret = au0828_stream_interrupt(dev);
1188 if (ret != 0) {
1189 dprintk(1, "error interrupting video stream!\n");
1190 return ret;
1191 }
1192 }
1193
1194 au0828_analog_stream_enable(dev);
1195
1196 return 0;
1197 }
1198
1199 static int vidioc_querycap(struct file *file, void *priv,
1200 struct v4l2_capability *cap)
1201 {
1202 struct video_device *vdev = video_devdata(file);
1203 struct au0828_dev *dev = video_drvdata(file);
1204
1205 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1206 dev->std_set_in_tuner_core, dev->dev_state);
1207
1208 strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1209 strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1210 usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1211
1212 /* set the device capabilities */
1213 cap->device_caps = V4L2_CAP_AUDIO |
1214 V4L2_CAP_READWRITE |
1215 V4L2_CAP_STREAMING |
1216 V4L2_CAP_TUNER;
1217 if (vdev->vfl_type == VFL_TYPE_GRABBER)
1218 cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1219 else
1220 cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1221 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1222 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1223 return 0;
1224 }
1225
1226 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1227 struct v4l2_fmtdesc *f)
1228 {
1229 if (f->index)
1230 return -EINVAL;
1231
1232 dprintk(1, "%s called\n", __func__);
1233
1234 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1235 strcpy(f->description, "Packed YUV2");
1236
1237 f->flags = 0;
1238 f->pixelformat = V4L2_PIX_FMT_UYVY;
1239
1240 return 0;
1241 }
1242
1243 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1244 struct v4l2_format *f)
1245 {
1246 struct au0828_dev *dev = video_drvdata(file);
1247
1248 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1249 dev->std_set_in_tuner_core, dev->dev_state);
1250
1251 f->fmt.pix.width = dev->width;
1252 f->fmt.pix.height = dev->height;
1253 f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1254 f->fmt.pix.bytesperline = dev->bytesperline;
1255 f->fmt.pix.sizeimage = dev->frame_size;
1256 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1257 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1258 f->fmt.pix.priv = 0;
1259 return 0;
1260 }
1261
1262 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1263 struct v4l2_format *f)
1264 {
1265 struct au0828_dev *dev = video_drvdata(file);
1266
1267 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1268 dev->std_set_in_tuner_core, dev->dev_state);
1269
1270 return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1271 }
1272
1273 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1274 struct v4l2_format *f)
1275 {
1276 struct au0828_dev *dev = video_drvdata(file);
1277 int rc;
1278
1279 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1280 dev->std_set_in_tuner_core, dev->dev_state);
1281
1282 rc = check_dev(dev);
1283 if (rc < 0)
1284 return rc;
1285
1286 if (vb2_is_busy(&dev->vb_vidq)) {
1287 pr_info("%s queue busy\n", __func__);
1288 rc = -EBUSY;
1289 goto out;
1290 }
1291
1292 rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1293 out:
1294 return rc;
1295 }
1296
1297 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1298 {
1299 struct au0828_dev *dev = video_drvdata(file);
1300
1301 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1302 dev->std_set_in_tuner_core, dev->dev_state);
1303
1304 if (norm == dev->std)
1305 return 0;
1306
1307 if (dev->streaming_users > 0)
1308 return -EBUSY;
1309
1310 dev->std = norm;
1311
1312 au0828_init_tuner(dev);
1313
1314 i2c_gate_ctrl(dev, 1);
1315
1316 /*
1317 * FIXME: when we support something other than 60Hz standards,
1318 * we are going to have to make the au0828 bridge adjust the size
1319 * of its capture buffer, which is currently hardcoded at 720x480
1320 */
1321
1322 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1323
1324 i2c_gate_ctrl(dev, 0);
1325
1326 return 0;
1327 }
1328
1329 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1330 {
1331 struct au0828_dev *dev = video_drvdata(file);
1332
1333 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1334 dev->std_set_in_tuner_core, dev->dev_state);
1335
1336 *norm = dev->std;
1337 return 0;
1338 }
1339
1340 static int vidioc_enum_input(struct file *file, void *priv,
1341 struct v4l2_input *input)
1342 {
1343 struct au0828_dev *dev = video_drvdata(file);
1344 unsigned int tmp;
1345
1346 static const char *inames[] = {
1347 [AU0828_VMUX_UNDEFINED] = "Undefined",
1348 [AU0828_VMUX_COMPOSITE] = "Composite",
1349 [AU0828_VMUX_SVIDEO] = "S-Video",
1350 [AU0828_VMUX_CABLE] = "Cable TV",
1351 [AU0828_VMUX_TELEVISION] = "Television",
1352 [AU0828_VMUX_DVB] = "DVB",
1353 };
1354
1355 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1356 dev->std_set_in_tuner_core, dev->dev_state);
1357
1358 tmp = input->index;
1359
1360 if (tmp >= AU0828_MAX_INPUT)
1361 return -EINVAL;
1362 if (AUVI_INPUT(tmp).type == 0)
1363 return -EINVAL;
1364
1365 input->index = tmp;
1366 strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1367 if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1368 (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1369 input->type |= V4L2_INPUT_TYPE_TUNER;
1370 input->audioset = 1;
1371 } else {
1372 input->type |= V4L2_INPUT_TYPE_CAMERA;
1373 input->audioset = 2;
1374 }
1375
1376 input->std = dev->vdev.tvnorms;
1377
1378 return 0;
1379 }
1380
1381 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1382 {
1383 struct au0828_dev *dev = video_drvdata(file);
1384
1385 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1386 dev->std_set_in_tuner_core, dev->dev_state);
1387
1388 *i = dev->ctrl_input;
1389 return 0;
1390 }
1391
1392 static void au0828_s_input(struct au0828_dev *dev, int index)
1393 {
1394 int i;
1395
1396 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1397 dev->std_set_in_tuner_core, dev->dev_state);
1398
1399 switch (AUVI_INPUT(index).type) {
1400 case AU0828_VMUX_SVIDEO:
1401 dev->input_type = AU0828_VMUX_SVIDEO;
1402 dev->ctrl_ainput = 1;
1403 break;
1404 case AU0828_VMUX_COMPOSITE:
1405 dev->input_type = AU0828_VMUX_COMPOSITE;
1406 dev->ctrl_ainput = 1;
1407 break;
1408 case AU0828_VMUX_TELEVISION:
1409 dev->input_type = AU0828_VMUX_TELEVISION;
1410 dev->ctrl_ainput = 0;
1411 break;
1412 default:
1413 dprintk(1, "unknown input type set [%d]\n",
1414 AUVI_INPUT(index).type);
1415 return;
1416 }
1417
1418 dev->ctrl_input = index;
1419
1420 v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1421 AUVI_INPUT(index).vmux, 0, 0);
1422
1423 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1424 int enable = 0;
1425 if (AUVI_INPUT(i).audio_setup == NULL)
1426 continue;
1427
1428 if (i == index)
1429 enable = 1;
1430 else
1431 enable = 0;
1432 if (enable) {
1433 (AUVI_INPUT(i).audio_setup)(dev, enable);
1434 } else {
1435 /* Make sure we leave it turned on if some
1436 other input is routed to this callback */
1437 if ((AUVI_INPUT(i).audio_setup) !=
1438 ((AUVI_INPUT(index).audio_setup))) {
1439 (AUVI_INPUT(i).audio_setup)(dev, enable);
1440 }
1441 }
1442 }
1443
1444 v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1445 AUVI_INPUT(index).amux, 0, 0);
1446 }
1447
1448 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1449 {
1450 struct au0828_dev *dev = video_drvdata(file);
1451 struct video_device *vfd = video_devdata(file);
1452
1453 dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1454 index);
1455 if (index >= AU0828_MAX_INPUT)
1456 return -EINVAL;
1457 if (AUVI_INPUT(index).type == 0)
1458 return -EINVAL;
1459
1460 if (dev->ctrl_input == index)
1461 return 0;
1462
1463 au0828_s_input(dev, index);
1464
1465 /*
1466 * Input has been changed. Disable the media source
1467 * associated with the old input and enable source
1468 * for the newly set input
1469 */
1470 v4l_disable_media_source(vfd);
1471 return v4l_enable_media_source(vfd);
1472 }
1473
1474 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1475 {
1476 if (a->index > 1)
1477 return -EINVAL;
1478
1479 dprintk(1, "%s called\n", __func__);
1480
1481 if (a->index == 0)
1482 strcpy(a->name, "Television");
1483 else
1484 strcpy(a->name, "Line in");
1485
1486 a->capability = V4L2_AUDCAP_STEREO;
1487 return 0;
1488 }
1489
1490 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1491 {
1492 struct au0828_dev *dev = video_drvdata(file);
1493
1494 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1495 dev->std_set_in_tuner_core, dev->dev_state);
1496
1497 a->index = dev->ctrl_ainput;
1498 if (a->index == 0)
1499 strcpy(a->name, "Television");
1500 else
1501 strcpy(a->name, "Line in");
1502
1503 a->capability = V4L2_AUDCAP_STEREO;
1504 return 0;
1505 }
1506
1507 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1508 {
1509 struct au0828_dev *dev = video_drvdata(file);
1510
1511 if (a->index != dev->ctrl_ainput)
1512 return -EINVAL;
1513
1514 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1515 dev->std_set_in_tuner_core, dev->dev_state);
1516 return 0;
1517 }
1518
1519 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1520 {
1521 struct au0828_dev *dev = video_drvdata(file);
1522 struct video_device *vfd = video_devdata(file);
1523 int ret;
1524
1525 if (t->index != 0)
1526 return -EINVAL;
1527
1528 ret = v4l_enable_media_source(vfd);
1529 if (ret)
1530 return ret;
1531
1532 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1533 dev->std_set_in_tuner_core, dev->dev_state);
1534
1535 strcpy(t->name, "Auvitek tuner");
1536
1537 au0828_init_tuner(dev);
1538 i2c_gate_ctrl(dev, 1);
1539 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1540 i2c_gate_ctrl(dev, 0);
1541 return 0;
1542 }
1543
1544 static int vidioc_s_tuner(struct file *file, void *priv,
1545 const struct v4l2_tuner *t)
1546 {
1547 struct au0828_dev *dev = video_drvdata(file);
1548
1549 if (t->index != 0)
1550 return -EINVAL;
1551
1552 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1553 dev->std_set_in_tuner_core, dev->dev_state);
1554
1555 au0828_init_tuner(dev);
1556 i2c_gate_ctrl(dev, 1);
1557 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1558 i2c_gate_ctrl(dev, 0);
1559
1560 dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1561 t->afc);
1562
1563 return 0;
1564
1565 }
1566
1567 static int vidioc_g_frequency(struct file *file, void *priv,
1568 struct v4l2_frequency *freq)
1569 {
1570 struct au0828_dev *dev = video_drvdata(file);
1571
1572 if (freq->tuner != 0)
1573 return -EINVAL;
1574 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1575 dev->std_set_in_tuner_core, dev->dev_state);
1576 freq->frequency = dev->ctrl_freq;
1577 return 0;
1578 }
1579
1580 static int vidioc_s_frequency(struct file *file, void *priv,
1581 const struct v4l2_frequency *freq)
1582 {
1583 struct au0828_dev *dev = video_drvdata(file);
1584 struct v4l2_frequency new_freq = *freq;
1585
1586 if (freq->tuner != 0)
1587 return -EINVAL;
1588
1589 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1590 dev->std_set_in_tuner_core, dev->dev_state);
1591
1592 au0828_init_tuner(dev);
1593 i2c_gate_ctrl(dev, 1);
1594
1595 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1596 /* Get the actual set (and possibly clamped) frequency */
1597 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1598 dev->ctrl_freq = new_freq.frequency;
1599
1600 i2c_gate_ctrl(dev, 0);
1601
1602 au0828_analog_stream_reset(dev);
1603
1604 return 0;
1605 }
1606
1607
1608 /* RAW VBI ioctls */
1609
1610 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1611 struct v4l2_format *format)
1612 {
1613 struct au0828_dev *dev = video_drvdata(file);
1614
1615 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1616 dev->std_set_in_tuner_core, dev->dev_state);
1617
1618 format->fmt.vbi.samples_per_line = dev->vbi_width;
1619 format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1620 format->fmt.vbi.offset = 0;
1621 format->fmt.vbi.flags = 0;
1622 format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1623
1624 format->fmt.vbi.count[0] = dev->vbi_height;
1625 format->fmt.vbi.count[1] = dev->vbi_height;
1626 format->fmt.vbi.start[0] = 21;
1627 format->fmt.vbi.start[1] = 284;
1628 memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1629
1630 return 0;
1631 }
1632
1633 static int vidioc_cropcap(struct file *file, void *priv,
1634 struct v4l2_cropcap *cc)
1635 {
1636 struct au0828_dev *dev = video_drvdata(file);
1637
1638 if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1639 return -EINVAL;
1640
1641 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1642 dev->std_set_in_tuner_core, dev->dev_state);
1643
1644 cc->bounds.left = 0;
1645 cc->bounds.top = 0;
1646 cc->bounds.width = dev->width;
1647 cc->bounds.height = dev->height;
1648
1649 cc->defrect = cc->bounds;
1650
1651 cc->pixelaspect.numerator = 54;
1652 cc->pixelaspect.denominator = 59;
1653
1654 return 0;
1655 }
1656
1657 #ifdef CONFIG_VIDEO_ADV_DEBUG
1658 static int vidioc_g_register(struct file *file, void *priv,
1659 struct v4l2_dbg_register *reg)
1660 {
1661 struct au0828_dev *dev = video_drvdata(file);
1662
1663 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1664 dev->std_set_in_tuner_core, dev->dev_state);
1665
1666 reg->val = au0828_read(dev, reg->reg);
1667 reg->size = 1;
1668 return 0;
1669 }
1670
1671 static int vidioc_s_register(struct file *file, void *priv,
1672 const struct v4l2_dbg_register *reg)
1673 {
1674 struct au0828_dev *dev = video_drvdata(file);
1675
1676 dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1677 dev->std_set_in_tuner_core, dev->dev_state);
1678
1679 return au0828_writereg(dev, reg->reg, reg->val);
1680 }
1681 #endif
1682
1683 static int vidioc_log_status(struct file *file, void *fh)
1684 {
1685 struct video_device *vdev = video_devdata(file);
1686
1687 dprintk(1, "%s called\n", __func__);
1688
1689 v4l2_ctrl_log_status(file, fh);
1690 v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1691 return 0;
1692 }
1693
1694 void au0828_v4l2_suspend(struct au0828_dev *dev)
1695 {
1696 struct urb *urb;
1697 int i;
1698
1699 pr_info("stopping V4L2\n");
1700
1701 if (dev->stream_state == STREAM_ON) {
1702 pr_info("stopping V4L2 active URBs\n");
1703 au0828_analog_stream_disable(dev);
1704 /* stop urbs */
1705 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1706 urb = dev->isoc_ctl.urb[i];
1707 if (urb) {
1708 if (!irqs_disabled())
1709 usb_kill_urb(urb);
1710 else
1711 usb_unlink_urb(urb);
1712 }
1713 }
1714 }
1715
1716 if (dev->vid_timeout_running)
1717 del_timer_sync(&dev->vid_timeout);
1718 if (dev->vbi_timeout_running)
1719 del_timer_sync(&dev->vbi_timeout);
1720 }
1721
1722 void au0828_v4l2_resume(struct au0828_dev *dev)
1723 {
1724 int i, rc;
1725
1726 pr_info("restarting V4L2\n");
1727
1728 if (dev->stream_state == STREAM_ON) {
1729 au0828_stream_interrupt(dev);
1730 au0828_init_tuner(dev);
1731 }
1732
1733 if (dev->vid_timeout_running)
1734 mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1735 if (dev->vbi_timeout_running)
1736 mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1737
1738 /* If we were doing ac97 instead of i2s, it would go here...*/
1739 au0828_i2s_init(dev);
1740
1741 au0828_analog_stream_enable(dev);
1742
1743 if (!(dev->stream_state == STREAM_ON)) {
1744 au0828_analog_stream_reset(dev);
1745 /* submit urbs */
1746 for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1747 rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1748 if (rc) {
1749 au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1750 i, rc);
1751 au0828_uninit_isoc(dev);
1752 }
1753 }
1754 }
1755 }
1756
1757 static struct v4l2_file_operations au0828_v4l_fops = {
1758 .owner = THIS_MODULE,
1759 .open = au0828_v4l2_open,
1760 .release = au0828_v4l2_close,
1761 .read = vb2_fop_read,
1762 .poll = vb2_fop_poll,
1763 .mmap = vb2_fop_mmap,
1764 .unlocked_ioctl = video_ioctl2,
1765 };
1766
1767 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1768 .vidioc_querycap = vidioc_querycap,
1769 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1770 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1771 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1772 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1773 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1774 .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1775 .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,
1776 .vidioc_enumaudio = vidioc_enumaudio,
1777 .vidioc_g_audio = vidioc_g_audio,
1778 .vidioc_s_audio = vidioc_s_audio,
1779 .vidioc_cropcap = vidioc_cropcap,
1780
1781 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1782 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1783 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1784 .vidioc_querybuf = vb2_ioctl_querybuf,
1785 .vidioc_qbuf = vb2_ioctl_qbuf,
1786 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1787 .vidioc_expbuf = vb2_ioctl_expbuf,
1788
1789 .vidioc_s_std = vidioc_s_std,
1790 .vidioc_g_std = vidioc_g_std,
1791 .vidioc_enum_input = vidioc_enum_input,
1792 .vidioc_g_input = vidioc_g_input,
1793 .vidioc_s_input = vidioc_s_input,
1794
1795 .vidioc_streamon = vb2_ioctl_streamon,
1796 .vidioc_streamoff = vb2_ioctl_streamoff,
1797
1798 .vidioc_g_tuner = vidioc_g_tuner,
1799 .vidioc_s_tuner = vidioc_s_tuner,
1800 .vidioc_g_frequency = vidioc_g_frequency,
1801 .vidioc_s_frequency = vidioc_s_frequency,
1802 #ifdef CONFIG_VIDEO_ADV_DEBUG
1803 .vidioc_g_register = vidioc_g_register,
1804 .vidioc_s_register = vidioc_s_register,
1805 #endif
1806 .vidioc_log_status = vidioc_log_status,
1807 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1808 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1809 };
1810
1811 static const struct video_device au0828_video_template = {
1812 .fops = &au0828_v4l_fops,
1813 .release = video_device_release_empty,
1814 .ioctl_ops = &video_ioctl_ops,
1815 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1816 };
1817
1818 static int au0828_vb2_setup(struct au0828_dev *dev)
1819 {
1820 int rc;
1821 struct vb2_queue *q;
1822
1823 /* Setup Videobuf2 for Video capture */
1824 q = &dev->vb_vidq;
1825 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1826 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1827 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1828 q->drv_priv = dev;
1829 q->buf_struct_size = sizeof(struct au0828_buffer);
1830 q->ops = &au0828_video_qops;
1831 q->mem_ops = &vb2_vmalloc_memops;
1832
1833 rc = vb2_queue_init(q);
1834 if (rc < 0)
1835 return rc;
1836
1837 /* Setup Videobuf2 for VBI capture */
1838 q = &dev->vb_vbiq;
1839 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1840 q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1841 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1842 q->drv_priv = dev;
1843 q->buf_struct_size = sizeof(struct au0828_buffer);
1844 q->ops = &au0828_vbi_qops;
1845 q->mem_ops = &vb2_vmalloc_memops;
1846
1847 rc = vb2_queue_init(q);
1848 if (rc < 0)
1849 return rc;
1850
1851 return 0;
1852 }
1853
1854 static void au0828_analog_create_entities(struct au0828_dev *dev)
1855 {
1856 #if defined(CONFIG_MEDIA_CONTROLLER)
1857 static const char * const inames[] = {
1858 [AU0828_VMUX_COMPOSITE] = "Composite",
1859 [AU0828_VMUX_SVIDEO] = "S-Video",
1860 [AU0828_VMUX_CABLE] = "Cable TV",
1861 [AU0828_VMUX_TELEVISION] = "Television",
1862 [AU0828_VMUX_DVB] = "DVB",
1863 };
1864 int ret, i;
1865
1866 /* Initialize Video and VBI pads */
1867 dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1868 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1869 if (ret < 0)
1870 pr_err("failed to initialize video media entity!\n");
1871
1872 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1873 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1874 if (ret < 0)
1875 pr_err("failed to initialize vbi media entity!\n");
1876
1877 /* Create entities for each input connector */
1878 for (i = 0; i < AU0828_MAX_INPUT; i++) {
1879 struct media_entity *ent = &dev->input_ent[i];
1880
1881 if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1882 break;
1883
1884 ent->name = inames[AUVI_INPUT(i).type];
1885 ent->flags = MEDIA_ENT_FL_CONNECTOR;
1886 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1887
1888 switch (AUVI_INPUT(i).type) {
1889 case AU0828_VMUX_COMPOSITE:
1890 ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1891 break;
1892 case AU0828_VMUX_SVIDEO:
1893 ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1894 break;
1895 case AU0828_VMUX_CABLE:
1896 case AU0828_VMUX_TELEVISION:
1897 case AU0828_VMUX_DVB:
1898 default: /* Just to shut up a warning */
1899 ent->function = MEDIA_ENT_F_CONN_RF;
1900 break;
1901 }
1902
1903 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1904 if (ret < 0)
1905 pr_err("failed to initialize input pad[%d]!\n", i);
1906
1907 ret = media_device_register_entity(dev->media_dev, ent);
1908 if (ret < 0)
1909 pr_err("failed to register input entity %d!\n", i);
1910 }
1911 #endif
1912 }
1913
1914 /**************************************************************************/
1915
1916 int au0828_analog_register(struct au0828_dev *dev,
1917 struct usb_interface *interface)
1918 {
1919 int retval = -ENOMEM;
1920 struct usb_host_interface *iface_desc;
1921 struct usb_endpoint_descriptor *endpoint;
1922 int i, ret;
1923
1924 dprintk(1, "au0828_analog_register called for intf#%d!\n",
1925 interface->cur_altsetting->desc.bInterfaceNumber);
1926
1927 /* No analog TV */
1928 if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1929 return 0;
1930
1931 /* set au0828 usb interface0 to as5 */
1932 retval = usb_set_interface(dev->usbdev,
1933 interface->cur_altsetting->desc.bInterfaceNumber, 5);
1934 if (retval != 0) {
1935 pr_info("Failure setting usb interface0 to as5\n");
1936 return retval;
1937 }
1938
1939 /* Figure out which endpoint has the isoc interface */
1940 iface_desc = interface->cur_altsetting;
1941 for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1942 endpoint = &iface_desc->endpoint[i].desc;
1943 if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1944 == USB_DIR_IN) &&
1945 ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1946 == USB_ENDPOINT_XFER_ISOC)) {
1947
1948 /* we find our isoc in endpoint */
1949 u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1950 dev->max_pkt_size = (tmp & 0x07ff) *
1951 (((tmp & 0x1800) >> 11) + 1);
1952 dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1953 dprintk(1,
1954 "Found isoc endpoint 0x%02x, max size = %d\n",
1955 dev->isoc_in_endpointaddr, dev->max_pkt_size);
1956 }
1957 }
1958 if (!(dev->isoc_in_endpointaddr)) {
1959 pr_info("Could not locate isoc endpoint\n");
1960 return -ENODEV;
1961 }
1962
1963 init_waitqueue_head(&dev->open);
1964 spin_lock_init(&dev->slock);
1965
1966 /* init video dma queues */
1967 INIT_LIST_HEAD(&dev->vidq.active);
1968 INIT_LIST_HEAD(&dev->vbiq.active);
1969
1970 setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1971 (unsigned long)dev);
1972 setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1973 (unsigned long)dev);
1974
1975 dev->width = NTSC_STD_W;
1976 dev->height = NTSC_STD_H;
1977 dev->field_size = dev->width * dev->height;
1978 dev->frame_size = dev->field_size << 1;
1979 dev->bytesperline = dev->width << 1;
1980 dev->vbi_width = 720;
1981 dev->vbi_height = 1;
1982 dev->ctrl_ainput = 0;
1983 dev->ctrl_freq = 960;
1984 dev->std = V4L2_STD_NTSC_M;
1985 /* Default input is TV Tuner */
1986 au0828_s_input(dev, 0);
1987
1988 mutex_init(&dev->vb_queue_lock);
1989 mutex_init(&dev->vb_vbi_queue_lock);
1990
1991 /* Fill the video capture device struct */
1992 dev->vdev = au0828_video_template;
1993 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1994 dev->vdev.lock = &dev->lock;
1995 dev->vdev.queue = &dev->vb_vidq;
1996 dev->vdev.queue->lock = &dev->vb_queue_lock;
1997 strcpy(dev->vdev.name, "au0828a video");
1998
1999 /* Setup the VBI device */
2000 dev->vbi_dev = au0828_video_template;
2001 dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
2002 dev->vbi_dev.lock = &dev->lock;
2003 dev->vbi_dev.queue = &dev->vb_vbiq;
2004 dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
2005 strcpy(dev->vbi_dev.name, "au0828a vbi");
2006
2007 /* Init entities at the Media Controller */
2008 au0828_analog_create_entities(dev);
2009
2010 /* initialize videobuf2 stuff */
2011 retval = au0828_vb2_setup(dev);
2012 if (retval != 0) {
2013 dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2014 retval);
2015 return -ENODEV;
2016 }
2017
2018 /* Register the v4l2 device */
2019 video_set_drvdata(&dev->vdev, dev);
2020 retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2021 if (retval != 0) {
2022 dprintk(1, "unable to register video device (error = %d).\n",
2023 retval);
2024 ret = -ENODEV;
2025 goto err_reg_vdev;
2026 }
2027
2028 /* Register the vbi device */
2029 video_set_drvdata(&dev->vbi_dev, dev);
2030 retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2031 if (retval != 0) {
2032 dprintk(1, "unable to register vbi device (error = %d).\n",
2033 retval);
2034 ret = -ENODEV;
2035 goto err_reg_vbi_dev;
2036 }
2037
2038 #ifdef CONFIG_MEDIA_CONTROLLER
2039 retval = v4l2_mc_create_media_graph(dev->media_dev);
2040 if (retval) {
2041 pr_err("%s() au0282_dev_register failed to create graph\n",
2042 __func__);
2043 ret = -ENODEV;
2044 goto err_reg_vbi_dev;
2045 }
2046 #endif
2047
2048 dprintk(1, "%s completed!\n", __func__);
2049
2050 return 0;
2051
2052 err_reg_vbi_dev:
2053 video_unregister_device(&dev->vdev);
2054 err_reg_vdev:
2055 vb2_queue_release(&dev->vb_vidq);
2056 vb2_queue_release(&dev->vb_vbiq);
2057 return ret;
2058 }
2059
Linux kernel - Deliverables
This page took 0.075125 seconds and 5 git commands to generate.