1 /*
2  * Auvitek AU0828 USB Bridge (Analog video support)
3  *
4  * Copyright (C) 2009 Devin Heitmueller <dheitmueller@linuxtv.org>
5  * Copyright (C) 2005-2008 Auvitek International, Ltd.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * As published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20  * 02110-1301, USA.
21  */
22 
23 /* Developer Notes:
24  *
25  * The hardware scaler supported is unimplemented
26  * AC97 audio support is unimplemented (only i2s audio mode)
27  *
28  */
29 
30 #include "au0828.h"
31 #include "au8522.h"
32 
33 #include <linux/module.h>
34 #include <linux/slab.h>
35 #include <linux/init.h>
36 #include <linux/device.h>
37 #include <media/v4l2-common.h>
38 #include <media/v4l2-mc.h>
39 #include <media/v4l2-ioctl.h>
40 #include <media/v4l2-event.h>
41 #include <media/tuner.h>
42 #include "au0828-reg.h"
43 
44 static DEFINE_MUTEX(au0828_sysfs_lock);
45 
46 /* ------------------------------------------------------------------
47 	Videobuf operations
48    ------------------------------------------------------------------*/
49 
50 static unsigned int isoc_debug;
51 module_param(isoc_debug, int, 0644);
52 MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");
53 
54 #define au0828_isocdbg(fmt, arg...) \
55 do {\
56 	if (isoc_debug) { \
57 		pr_info("au0828 %s :"fmt, \
58 		       __func__ , ##arg);	   \
59 	} \
60   } while (0)
61 
62 static inline void i2c_gate_ctrl(struct au0828_dev *dev, int val)
63 {
64 	if (dev->dvb.frontend && dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl)
65 		dev->dvb.frontend->ops.analog_ops.i2c_gate_ctrl(dev->dvb.frontend, val);
66 }
67 
68 static inline void print_err_status(struct au0828_dev *dev,
69 				    int packet, int status)
70 {
71 	char *errmsg = "Unknown";
72 
73 	switch (status) {
74 	case -ENOENT:
75 		errmsg = "unlinked synchronuously";
76 		break;
77 	case -ECONNRESET:
78 		errmsg = "unlinked asynchronuously";
79 		break;
80 	case -ENOSR:
81 		errmsg = "Buffer error (overrun)";
82 		break;
83 	case -EPIPE:
84 		errmsg = "Stalled (device not responding)";
85 		break;
86 	case -EOVERFLOW:
87 		errmsg = "Babble (bad cable?)";
88 		break;
89 	case -EPROTO:
90 		errmsg = "Bit-stuff error (bad cable?)";
91 		break;
92 	case -EILSEQ:
93 		errmsg = "CRC/Timeout (could be anything)";
94 		break;
95 	case -ETIME:
96 		errmsg = "Device does not respond";
97 		break;
98 	}
99 	if (packet < 0) {
100 		au0828_isocdbg("URB status %d [%s].\n",	status, errmsg);
101 	} else {
102 		au0828_isocdbg("URB packet %d, status %d [%s].\n",
103 			       packet, status, errmsg);
104 	}
105 }
106 
107 static int check_dev(struct au0828_dev *dev)
108 {
109 	if (test_bit(DEV_DISCONNECTED, &dev->dev_state)) {
110 		pr_info("v4l2 ioctl: device not present\n");
111 		return -ENODEV;
112 	}
113 
114 	if (test_bit(DEV_MISCONFIGURED, &dev->dev_state)) {
115 		pr_info("v4l2 ioctl: device is misconfigured; close and open it again\n");
116 		return -EIO;
117 	}
118 	return 0;
119 }
120 
121 /*
122  * IRQ callback, called by URB callback
123  */
124 static void au0828_irq_callback(struct urb *urb)
125 {
126 	struct au0828_dmaqueue  *dma_q = urb->context;
127 	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
128 	unsigned long flags = 0;
129 	int i;
130 
131 	switch (urb->status) {
132 	case 0:             /* success */
133 	case -ETIMEDOUT:    /* NAK */
134 		break;
135 	case -ECONNRESET:   /* kill */
136 	case -ENOENT:
137 	case -ESHUTDOWN:
138 		au0828_isocdbg("au0828_irq_callback called: status kill\n");
139 		return;
140 	default:            /* unknown error */
141 		au0828_isocdbg("urb completition error %d.\n", urb->status);
142 		break;
143 	}
144 
145 	/* Copy data from URB */
146 	spin_lock_irqsave(&dev->slock, flags);
147 	dev->isoc_ctl.isoc_copy(dev, urb);
148 	spin_unlock_irqrestore(&dev->slock, flags);
149 
150 	/* Reset urb buffers */
151 	for (i = 0; i < urb->number_of_packets; i++) {
152 		urb->iso_frame_desc[i].status = 0;
153 		urb->iso_frame_desc[i].actual_length = 0;
154 	}
155 	urb->status = 0;
156 
157 	urb->status = usb_submit_urb(urb, GFP_ATOMIC);
158 	if (urb->status) {
159 		au0828_isocdbg("urb resubmit failed (error=%i)\n",
160 			       urb->status);
161 	}
162 	dev->stream_state = STREAM_ON;
163 }
164 
165 /*
166  * Stop and Deallocate URBs
167  */
168 static void au0828_uninit_isoc(struct au0828_dev *dev)
169 {
170 	struct urb *urb;
171 	int i;
172 
173 	au0828_isocdbg("au0828: called au0828_uninit_isoc\n");
174 
175 	dev->isoc_ctl.nfields = -1;
176 	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
177 		urb = dev->isoc_ctl.urb[i];
178 		if (urb) {
179 			if (!irqs_disabled())
180 				usb_kill_urb(urb);
181 			else
182 				usb_unlink_urb(urb);
183 
184 			if (dev->isoc_ctl.transfer_buffer[i]) {
185 				usb_free_coherent(dev->usbdev,
186 					urb->transfer_buffer_length,
187 					dev->isoc_ctl.transfer_buffer[i],
188 					urb->transfer_dma);
189 			}
190 			usb_free_urb(urb);
191 			dev->isoc_ctl.urb[i] = NULL;
192 		}
193 		dev->isoc_ctl.transfer_buffer[i] = NULL;
194 	}
195 
196 	kfree(dev->isoc_ctl.urb);
197 	kfree(dev->isoc_ctl.transfer_buffer);
198 
199 	dev->isoc_ctl.urb = NULL;
200 	dev->isoc_ctl.transfer_buffer = NULL;
201 	dev->isoc_ctl.num_bufs = 0;
202 
203 	dev->stream_state = STREAM_OFF;
204 }
205 
206 /*
207  * Allocate URBs and start IRQ
208  */
209 static int au0828_init_isoc(struct au0828_dev *dev, int max_packets,
210 			    int num_bufs, int max_pkt_size,
211 			    int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb))
212 {
213 	struct au0828_dmaqueue *dma_q = &dev->vidq;
214 	int i;
215 	int sb_size, pipe;
216 	struct urb *urb;
217 	int j, k;
218 	int rc;
219 
220 	au0828_isocdbg("au0828: called au0828_prepare_isoc\n");
221 
222 	dev->isoc_ctl.isoc_copy = isoc_copy;
223 	dev->isoc_ctl.num_bufs = num_bufs;
224 
225 	dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs,  GFP_KERNEL);
226 	if (!dev->isoc_ctl.urb) {
227 		au0828_isocdbg("cannot alloc memory for usb buffers\n");
228 		return -ENOMEM;
229 	}
230 
231 	dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs,
232 					      GFP_KERNEL);
233 	if (!dev->isoc_ctl.transfer_buffer) {
234 		au0828_isocdbg("cannot allocate memory for usb transfer\n");
235 		kfree(dev->isoc_ctl.urb);
236 		return -ENOMEM;
237 	}
238 
239 	dev->isoc_ctl.max_pkt_size = max_pkt_size;
240 	dev->isoc_ctl.buf = NULL;
241 
242 	sb_size = max_packets * dev->isoc_ctl.max_pkt_size;
243 
244 	/* allocate urbs and transfer buffers */
245 	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
246 		urb = usb_alloc_urb(max_packets, GFP_KERNEL);
247 		if (!urb) {
248 			au0828_uninit_isoc(dev);
249 			return -ENOMEM;
250 		}
251 		dev->isoc_ctl.urb[i] = urb;
252 
253 		dev->isoc_ctl.transfer_buffer[i] = usb_alloc_coherent(dev->usbdev,
254 			sb_size, GFP_KERNEL, &urb->transfer_dma);
255 		if (!dev->isoc_ctl.transfer_buffer[i]) {
256 			printk("unable to allocate %i bytes for transfer"
257 					" buffer %i%s\n",
258 					sb_size, i,
259 					in_interrupt() ? " while in int" : "");
260 			au0828_uninit_isoc(dev);
261 			return -ENOMEM;
262 		}
263 		memset(dev->isoc_ctl.transfer_buffer[i], 0, sb_size);
264 
265 		pipe = usb_rcvisocpipe(dev->usbdev,
266 				       dev->isoc_in_endpointaddr),
267 
268 		usb_fill_int_urb(urb, dev->usbdev, pipe,
269 				 dev->isoc_ctl.transfer_buffer[i], sb_size,
270 				 au0828_irq_callback, dma_q, 1);
271 
272 		urb->number_of_packets = max_packets;
273 		urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
274 
275 		k = 0;
276 		for (j = 0; j < max_packets; j++) {
277 			urb->iso_frame_desc[j].offset = k;
278 			urb->iso_frame_desc[j].length =
279 						dev->isoc_ctl.max_pkt_size;
280 			k += dev->isoc_ctl.max_pkt_size;
281 		}
282 	}
283 
284 	/* submit urbs and enables IRQ */
285 	for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
286 		rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
287 		if (rc) {
288 			au0828_isocdbg("submit of urb %i failed (error=%i)\n",
289 				       i, rc);
290 			au0828_uninit_isoc(dev);
291 			return rc;
292 		}
293 	}
294 
295 	return 0;
296 }
297 
298 /*
299  * Announces that a buffer were filled and request the next
300  */
301 static inline void buffer_filled(struct au0828_dev *dev,
302 				 struct au0828_dmaqueue *dma_q,
303 				 struct au0828_buffer *buf)
304 {
305 	struct vb2_v4l2_buffer *vb = &buf->vb;
306 	struct vb2_queue *q = vb->vb2_buf.vb2_queue;
307 
308 	/* Advice that buffer was filled */
309 	au0828_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
310 
311 	if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
312 		vb->sequence = dev->frame_count++;
313 	else
314 		vb->sequence = dev->vbi_frame_count++;
315 
316 	vb->field = V4L2_FIELD_INTERLACED;
317 	vb->vb2_buf.timestamp = ktime_get_ns();
318 	vb2_buffer_done(&vb->vb2_buf, VB2_BUF_STATE_DONE);
319 }
320 
321 /*
322  * Identify the buffer header type and properly handles
323  */
324 static void au0828_copy_video(struct au0828_dev *dev,
325 			      struct au0828_dmaqueue  *dma_q,
326 			      struct au0828_buffer *buf,
327 			      unsigned char *p,
328 			      unsigned char *outp, unsigned long len)
329 {
330 	void *fieldstart, *startwrite, *startread;
331 	int  linesdone, currlinedone, offset, lencopy, remain;
332 	int bytesperline = dev->width << 1; /* Assumes 16-bit depth @@@@ */
333 
334 	if (len == 0)
335 		return;
336 
337 	if (dma_q->pos + len > buf->length)
338 		len = buf->length - dma_q->pos;
339 
340 	startread = p;
341 	remain = len;
342 
343 	/* Interlaces frame */
344 	if (buf->top_field)
345 		fieldstart = outp;
346 	else
347 		fieldstart = outp + bytesperline;
348 
349 	linesdone = dma_q->pos / bytesperline;
350 	currlinedone = dma_q->pos % bytesperline;
351 	offset = linesdone * bytesperline * 2 + currlinedone;
352 	startwrite = fieldstart + offset;
353 	lencopy = bytesperline - currlinedone;
354 	lencopy = lencopy > remain ? remain : lencopy;
355 
356 	if ((char *)startwrite + lencopy > (char *)outp + buf->length) {
357 		au0828_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
358 			       ((char *)startwrite + lencopy) -
359 			       ((char *)outp + buf->length));
360 		remain = (char *)outp + buf->length - (char *)startwrite;
361 		lencopy = remain;
362 	}
363 	if (lencopy <= 0)
364 		return;
365 	memcpy(startwrite, startread, lencopy);
366 
367 	remain -= lencopy;
368 
369 	while (remain > 0) {
370 		startwrite += lencopy + bytesperline;
371 		startread += lencopy;
372 		if (bytesperline > remain)
373 			lencopy = remain;
374 		else
375 			lencopy = bytesperline;
376 
377 		if ((char *)startwrite + lencopy > (char *)outp +
378 		    buf->length) {
379 			au0828_isocdbg("Overflow %zi bytes past buf end (2)\n",
380 				       ((char *)startwrite + lencopy) -
381 				       ((char *)outp + buf->length));
382 			lencopy = remain = (char *)outp + buf->length -
383 					   (char *)startwrite;
384 		}
385 		if (lencopy <= 0)
386 			break;
387 
388 		memcpy(startwrite, startread, lencopy);
389 
390 		remain -= lencopy;
391 	}
392 
393 	if (offset > 1440) {
394 		/* We have enough data to check for greenscreen */
395 		if (outp[0] < 0x60 && outp[1440] < 0x60)
396 			dev->greenscreen_detected = 1;
397 	}
398 
399 	dma_q->pos += len;
400 }
401 
402 /*
403  * video-buf generic routine to get the next available buffer
404  */
405 static inline void get_next_buf(struct au0828_dmaqueue *dma_q,
406 				struct au0828_buffer **buf)
407 {
408 	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vidq);
409 
410 	if (list_empty(&dma_q->active)) {
411 		au0828_isocdbg("No active queue to serve\n");
412 		dev->isoc_ctl.buf = NULL;
413 		*buf = NULL;
414 		return;
415 	}
416 
417 	/* Get the next buffer */
418 	*buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
419 	/* Cleans up buffer - Useful for testing for frame/URB loss */
420 	list_del(&(*buf)->list);
421 	dma_q->pos = 0;
422 	(*buf)->vb_buf = (*buf)->mem;
423 	dev->isoc_ctl.buf = *buf;
424 
425 	return;
426 }
427 
428 static void au0828_copy_vbi(struct au0828_dev *dev,
429 			      struct au0828_dmaqueue  *dma_q,
430 			      struct au0828_buffer *buf,
431 			      unsigned char *p,
432 			      unsigned char *outp, unsigned long len)
433 {
434 	unsigned char *startwrite, *startread;
435 	int bytesperline;
436 	int i, j = 0;
437 
438 	if (dev == NULL) {
439 		au0828_isocdbg("dev is null\n");
440 		return;
441 	}
442 
443 	if (dma_q == NULL) {
444 		au0828_isocdbg("dma_q is null\n");
445 		return;
446 	}
447 	if (buf == NULL)
448 		return;
449 	if (p == NULL) {
450 		au0828_isocdbg("p is null\n");
451 		return;
452 	}
453 	if (outp == NULL) {
454 		au0828_isocdbg("outp is null\n");
455 		return;
456 	}
457 
458 	bytesperline = dev->vbi_width;
459 
460 	if (dma_q->pos + len > buf->length)
461 		len = buf->length - dma_q->pos;
462 
463 	startread = p;
464 	startwrite = outp + (dma_q->pos / 2);
465 
466 	/* Make sure the bottom field populates the second half of the frame */
467 	if (buf->top_field == 0)
468 		startwrite += bytesperline * dev->vbi_height;
469 
470 	for (i = 0; i < len; i += 2)
471 		startwrite[j++] = startread[i+1];
472 
473 	dma_q->pos += len;
474 }
475 
476 
477 /*
478  * video-buf generic routine to get the next available VBI buffer
479  */
480 static inline void vbi_get_next_buf(struct au0828_dmaqueue *dma_q,
481 				    struct au0828_buffer **buf)
482 {
483 	struct au0828_dev *dev = container_of(dma_q, struct au0828_dev, vbiq);
484 
485 	if (list_empty(&dma_q->active)) {
486 		au0828_isocdbg("No active queue to serve\n");
487 		dev->isoc_ctl.vbi_buf = NULL;
488 		*buf = NULL;
489 		return;
490 	}
491 
492 	/* Get the next buffer */
493 	*buf = list_entry(dma_q->active.next, struct au0828_buffer, list);
494 	/* Cleans up buffer - Useful for testing for frame/URB loss */
495 	list_del(&(*buf)->list);
496 	dma_q->pos = 0;
497 	(*buf)->vb_buf = (*buf)->mem;
498 	dev->isoc_ctl.vbi_buf = *buf;
499 	return;
500 }
501 
502 /*
503  * Controls the isoc copy of each urb packet
504  */
505 static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
506 {
507 	struct au0828_buffer    *buf;
508 	struct au0828_buffer    *vbi_buf;
509 	struct au0828_dmaqueue  *dma_q = urb->context;
510 	struct au0828_dmaqueue  *vbi_dma_q = &dev->vbiq;
511 	unsigned char *outp = NULL;
512 	unsigned char *vbioutp = NULL;
513 	int i, len = 0, rc = 1;
514 	unsigned char *p;
515 	unsigned char fbyte;
516 	unsigned int vbi_field_size;
517 	unsigned int remain, lencopy;
518 
519 	if (!dev)
520 		return 0;
521 
522 	if (test_bit(DEV_DISCONNECTED, &dev->dev_state) ||
523 	    test_bit(DEV_MISCONFIGURED, &dev->dev_state))
524 		return 0;
525 
526 	if (urb->status < 0) {
527 		print_err_status(dev, -1, urb->status);
528 		if (urb->status == -ENOENT)
529 			return 0;
530 	}
531 
532 	buf = dev->isoc_ctl.buf;
533 	if (buf != NULL)
534 		outp = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
535 
536 	vbi_buf = dev->isoc_ctl.vbi_buf;
537 	if (vbi_buf != NULL)
538 		vbioutp = vb2_plane_vaddr(&vbi_buf->vb.vb2_buf, 0);
539 
540 	for (i = 0; i < urb->number_of_packets; i++) {
541 		int status = urb->iso_frame_desc[i].status;
542 
543 		if (status < 0) {
544 			print_err_status(dev, i, status);
545 			if (urb->iso_frame_desc[i].status != -EPROTO)
546 				continue;
547 		}
548 
549 		if (urb->iso_frame_desc[i].actual_length <= 0)
550 			continue;
551 
552 		if (urb->iso_frame_desc[i].actual_length >
553 						dev->max_pkt_size) {
554 			au0828_isocdbg("packet bigger than packet size");
555 			continue;
556 		}
557 
558 		p = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
559 		fbyte = p[0];
560 		len = urb->iso_frame_desc[i].actual_length - 4;
561 		p += 4;
562 
563 		if (fbyte & 0x80) {
564 			len -= 4;
565 			p += 4;
566 			au0828_isocdbg("Video frame %s\n",
567 				       (fbyte & 0x40) ? "odd" : "even");
568 			if (fbyte & 0x40) {
569 				/* VBI */
570 				if (vbi_buf != NULL)
571 					buffer_filled(dev, vbi_dma_q, vbi_buf);
572 				vbi_get_next_buf(vbi_dma_q, &vbi_buf);
573 				if (vbi_buf == NULL)
574 					vbioutp = NULL;
575 				else
576 					vbioutp = vb2_plane_vaddr(
577 						&vbi_buf->vb.vb2_buf, 0);
578 
579 				/* Video */
580 				if (buf != NULL)
581 					buffer_filled(dev, dma_q, buf);
582 				get_next_buf(dma_q, &buf);
583 				if (buf == NULL)
584 					outp = NULL;
585 				else
586 					outp = vb2_plane_vaddr(
587 						&buf->vb.vb2_buf, 0);
588 
589 				/* As long as isoc traffic is arriving, keep
590 				   resetting the timer */
591 				if (dev->vid_timeout_running)
592 					mod_timer(&dev->vid_timeout,
593 						  jiffies + (HZ / 10));
594 				if (dev->vbi_timeout_running)
595 					mod_timer(&dev->vbi_timeout,
596 						  jiffies + (HZ / 10));
597 			}
598 
599 			if (buf != NULL) {
600 				if (fbyte & 0x40)
601 					buf->top_field = 1;
602 				else
603 					buf->top_field = 0;
604 			}
605 
606 			if (vbi_buf != NULL) {
607 				if (fbyte & 0x40)
608 					vbi_buf->top_field = 1;
609 				else
610 					vbi_buf->top_field = 0;
611 			}
612 
613 			dev->vbi_read = 0;
614 			vbi_dma_q->pos = 0;
615 			dma_q->pos = 0;
616 		}
617 
618 		vbi_field_size = dev->vbi_width * dev->vbi_height * 2;
619 		if (dev->vbi_read < vbi_field_size) {
620 			remain  = vbi_field_size - dev->vbi_read;
621 			if (len < remain)
622 				lencopy = len;
623 			else
624 				lencopy = remain;
625 
626 			if (vbi_buf != NULL)
627 				au0828_copy_vbi(dev, vbi_dma_q, vbi_buf, p,
628 						vbioutp, len);
629 
630 			len -= lencopy;
631 			p += lencopy;
632 			dev->vbi_read += lencopy;
633 		}
634 
635 		if (dev->vbi_read >= vbi_field_size && buf != NULL)
636 			au0828_copy_video(dev, dma_q, buf, p, outp, len);
637 	}
638 	return rc;
639 }
640 
641 void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
642 {
643 #ifdef CONFIG_MEDIA_CONTROLLER
644 	int i;
645 
646 	for (i = 0; i < AU0828_MAX_INPUT; i++) {
647 		if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
648 			return;
649 		media_device_unregister_entity(&dev->input_ent[i]);
650 	}
651 #endif
652 }
653 
654 static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
655 {
656 	struct au0828_dev *dev =
657 		container_of(v4l2_dev, struct au0828_dev, v4l2_dev);
658 
659 	v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
660 	v4l2_device_unregister(&dev->v4l2_dev);
661 	au0828_usb_v4l2_media_release(dev);
662 	au0828_usb_release(dev);
663 }
664 
665 int au0828_v4l2_device_register(struct usb_interface *interface,
666 				struct au0828_dev *dev)
667 {
668 	int retval;
669 
670 	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
671 		return 0;
672 
673 	/* Create the v4l2_device */
674 #ifdef CONFIG_MEDIA_CONTROLLER
675 	dev->v4l2_dev.mdev = dev->media_dev;
676 #endif
677 	retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
678 	if (retval) {
679 		pr_err("%s() v4l2_device_register failed\n",
680 		       __func__);
681 		return retval;
682 	}
683 
684 	dev->v4l2_dev.release = au0828_usb_v4l2_release;
685 
686 	/* This control handler will inherit the controls from au8522 */
687 	retval = v4l2_ctrl_handler_init(&dev->v4l2_ctrl_hdl, 4);
688 	if (retval) {
689 		pr_err("%s() v4l2_ctrl_handler_init failed\n",
690 		       __func__);
691 		return retval;
692 	}
693 	dev->v4l2_dev.ctrl_handler = &dev->v4l2_ctrl_hdl;
694 
695 	return 0;
696 }
697 
698 static int queue_setup(struct vb2_queue *vq,
699 		       unsigned int *nbuffers, unsigned int *nplanes,
700 		       unsigned int sizes[], struct device *alloc_devs[])
701 {
702 	struct au0828_dev *dev = vb2_get_drv_priv(vq);
703 	unsigned long size = dev->height * dev->bytesperline;
704 
705 	if (*nplanes)
706 		return sizes[0] < size ? -EINVAL : 0;
707 	*nplanes = 1;
708 	sizes[0] = size;
709 	return 0;
710 }
711 
712 static int
713 buffer_prepare(struct vb2_buffer *vb)
714 {
715 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
716 	struct au0828_buffer *buf = container_of(vbuf,
717 				struct au0828_buffer, vb);
718 	struct au0828_dev    *dev = vb2_get_drv_priv(vb->vb2_queue);
719 
720 	buf->length = dev->height * dev->bytesperline;
721 
722 	if (vb2_plane_size(vb, 0) < buf->length) {
723 		pr_err("%s data will not fit into plane (%lu < %lu)\n",
724 			__func__, vb2_plane_size(vb, 0), buf->length);
725 		return -EINVAL;
726 	}
727 	vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->length);
728 	return 0;
729 }
730 
731 static void
732 buffer_queue(struct vb2_buffer *vb)
733 {
734 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
735 	struct au0828_buffer    *buf     = container_of(vbuf,
736 							struct au0828_buffer,
737 							vb);
738 	struct au0828_dev       *dev     = vb2_get_drv_priv(vb->vb2_queue);
739 	struct au0828_dmaqueue  *vidq    = &dev->vidq;
740 	unsigned long flags = 0;
741 
742 	buf->mem = vb2_plane_vaddr(vb, 0);
743 	buf->length = vb2_plane_size(vb, 0);
744 
745 	spin_lock_irqsave(&dev->slock, flags);
746 	list_add_tail(&buf->list, &vidq->active);
747 	spin_unlock_irqrestore(&dev->slock, flags);
748 }
749 
750 static int au0828_i2s_init(struct au0828_dev *dev)
751 {
752 	/* Enable i2s mode */
753 	au0828_writereg(dev, AU0828_AUDIOCTRL_50C, 0x01);
754 	return 0;
755 }
756 
757 /*
758  * Auvitek au0828 analog stream enable
759  */
760 static int au0828_analog_stream_enable(struct au0828_dev *d)
761 {
762 	struct usb_interface *iface;
763 	int ret, h, w;
764 
765 	dprintk(1, "au0828_analog_stream_enable called\n");
766 
767 	iface = usb_ifnum_to_if(d->usbdev, 0);
768 	if (iface && iface->cur_altsetting->desc.bAlternateSetting != 5) {
769 		dprintk(1, "Changing intf#0 to alt 5\n");
770 		/* set au0828 interface0 to AS5 here again */
771 		ret = usb_set_interface(d->usbdev, 0, 5);
772 		if (ret < 0) {
773 			pr_info("Au0828 can't set alt setting to 5!\n");
774 			return -EBUSY;
775 		}
776 	}
777 
778 	h = d->height / 2 + 2;
779 	w = d->width * 2;
780 
781 	au0828_writereg(d, AU0828_SENSORCTRL_VBI_103, 0x00);
782 	au0828_writereg(d, 0x106, 0x00);
783 	/* set x position */
784 	au0828_writereg(d, 0x110, 0x00);
785 	au0828_writereg(d, 0x111, 0x00);
786 	au0828_writereg(d, 0x114, w & 0xff);
787 	au0828_writereg(d, 0x115, w >> 8);
788 	/* set y position */
789 	au0828_writereg(d, 0x112, 0x00);
790 	au0828_writereg(d, 0x113, 0x00);
791 	au0828_writereg(d, 0x116, h & 0xff);
792 	au0828_writereg(d, 0x117, h >> 8);
793 	au0828_writereg(d, AU0828_SENSORCTRL_100, 0xb3);
794 
795 	return 0;
796 }
797 
798 static int au0828_analog_stream_disable(struct au0828_dev *d)
799 {
800 	dprintk(1, "au0828_analog_stream_disable called\n");
801 	au0828_writereg(d, AU0828_SENSORCTRL_100, 0x0);
802 	return 0;
803 }
804 
805 static void au0828_analog_stream_reset(struct au0828_dev *dev)
806 {
807 	dprintk(1, "au0828_analog_stream_reset called\n");
808 	au0828_writereg(dev, AU0828_SENSORCTRL_100, 0x0);
809 	mdelay(30);
810 	au0828_writereg(dev, AU0828_SENSORCTRL_100, 0xb3);
811 }
812 
813 /*
814  * Some operations needs to stop current streaming
815  */
816 static int au0828_stream_interrupt(struct au0828_dev *dev)
817 {
818 	int ret = 0;
819 
820 	dev->stream_state = STREAM_INTERRUPT;
821 	if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
822 		return -ENODEV;
823 	else if (ret) {
824 		set_bit(DEV_MISCONFIGURED, &dev->dev_state);
825 		dprintk(1, "%s device is misconfigured!\n", __func__);
826 		return ret;
827 	}
828 	return 0;
829 }
830 
831 int au0828_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
832 {
833 	struct au0828_dev *dev = vb2_get_drv_priv(vq);
834 	int rc = 0;
835 
836 	dprintk(1, "au0828_start_analog_streaming called %d\n",
837 		dev->streaming_users);
838 
839 	if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
840 		dev->frame_count = 0;
841 	else
842 		dev->vbi_frame_count = 0;
843 
844 	if (dev->streaming_users == 0) {
845 		/* If we were doing ac97 instead of i2s, it would go here...*/
846 		au0828_i2s_init(dev);
847 		rc = au0828_init_isoc(dev, AU0828_ISO_PACKETS_PER_URB,
848 				   AU0828_MAX_ISO_BUFS, dev->max_pkt_size,
849 				   au0828_isoc_copy);
850 		if (rc < 0) {
851 			pr_info("au0828_init_isoc failed\n");
852 			return rc;
853 		}
854 
855 		if (vq->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
856 			v4l2_device_call_all(&dev->v4l2_dev, 0, video,
857 						s_stream, 1);
858 			dev->vid_timeout_running = 1;
859 			mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
860 		} else if (vq->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
861 			dev->vbi_timeout_running = 1;
862 			mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
863 		}
864 	}
865 	dev->streaming_users++;
866 	return rc;
867 }
868 
869 static void au0828_stop_streaming(struct vb2_queue *vq)
870 {
871 	struct au0828_dev *dev = vb2_get_drv_priv(vq);
872 	struct au0828_dmaqueue *vidq = &dev->vidq;
873 	unsigned long flags = 0;
874 
875 	dprintk(1, "au0828_stop_streaming called %d\n", dev->streaming_users);
876 
877 	if (dev->streaming_users-- == 1)
878 		au0828_uninit_isoc(dev);
879 
880 	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
881 	dev->vid_timeout_running = 0;
882 	del_timer_sync(&dev->vid_timeout);
883 
884 	spin_lock_irqsave(&dev->slock, flags);
885 	if (dev->isoc_ctl.buf != NULL) {
886 		vb2_buffer_done(&dev->isoc_ctl.buf->vb.vb2_buf,
887 				VB2_BUF_STATE_ERROR);
888 		dev->isoc_ctl.buf = NULL;
889 	}
890 	while (!list_empty(&vidq->active)) {
891 		struct au0828_buffer *buf;
892 
893 		buf = list_entry(vidq->active.next, struct au0828_buffer, list);
894 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
895 		list_del(&buf->list);
896 	}
897 	spin_unlock_irqrestore(&dev->slock, flags);
898 }
899 
900 void au0828_stop_vbi_streaming(struct vb2_queue *vq)
901 {
902 	struct au0828_dev *dev = vb2_get_drv_priv(vq);
903 	struct au0828_dmaqueue *vbiq = &dev->vbiq;
904 	unsigned long flags = 0;
905 
906 	dprintk(1, "au0828_stop_vbi_streaming called %d\n",
907 		dev->streaming_users);
908 
909 	if (dev->streaming_users-- == 1)
910 		au0828_uninit_isoc(dev);
911 
912 	spin_lock_irqsave(&dev->slock, flags);
913 	if (dev->isoc_ctl.vbi_buf != NULL) {
914 		vb2_buffer_done(&dev->isoc_ctl.vbi_buf->vb.vb2_buf,
915 				VB2_BUF_STATE_ERROR);
916 		dev->isoc_ctl.vbi_buf = NULL;
917 	}
918 	while (!list_empty(&vbiq->active)) {
919 		struct au0828_buffer *buf;
920 
921 		buf = list_entry(vbiq->active.next, struct au0828_buffer, list);
922 		list_del(&buf->list);
923 		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
924 	}
925 	spin_unlock_irqrestore(&dev->slock, flags);
926 
927 	dev->vbi_timeout_running = 0;
928 	del_timer_sync(&dev->vbi_timeout);
929 }
930 
931 static const struct vb2_ops au0828_video_qops = {
932 	.queue_setup     = queue_setup,
933 	.buf_prepare     = buffer_prepare,
934 	.buf_queue       = buffer_queue,
935 	.start_streaming = au0828_start_analog_streaming,
936 	.stop_streaming  = au0828_stop_streaming,
937 	.wait_prepare    = vb2_ops_wait_prepare,
938 	.wait_finish     = vb2_ops_wait_finish,
939 };
940 
941 /* ------------------------------------------------------------------
942    V4L2 interface
943    ------------------------------------------------------------------*/
944 /*
945  * au0828_analog_unregister
946  * unregister v4l2 devices
947  */
948 int au0828_analog_unregister(struct au0828_dev *dev)
949 {
950 	dprintk(1, "au0828_analog_unregister called\n");
951 
952 	/* No analog TV */
953 	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
954 		return 0;
955 
956 	mutex_lock(&au0828_sysfs_lock);
957 	video_unregister_device(&dev->vdev);
958 	video_unregister_device(&dev->vbi_dev);
959 	mutex_unlock(&au0828_sysfs_lock);
960 
961 	v4l2_device_disconnect(&dev->v4l2_dev);
962 	v4l2_device_put(&dev->v4l2_dev);
963 
964 	return 1;
965 }
966 
967 /* This function ensures that video frames continue to be delivered even if
968    the ITU-656 input isn't receiving any data (thereby preventing applications
969    such as tvtime from hanging) */
970 static void au0828_vid_buffer_timeout(unsigned long data)
971 {
972 	struct au0828_dev *dev = (struct au0828_dev *) data;
973 	struct au0828_dmaqueue *dma_q = &dev->vidq;
974 	struct au0828_buffer *buf;
975 	unsigned char *vid_data;
976 	unsigned long flags = 0;
977 
978 	spin_lock_irqsave(&dev->slock, flags);
979 
980 	buf = dev->isoc_ctl.buf;
981 	if (buf != NULL) {
982 		vid_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
983 		memset(vid_data, 0x00, buf->length); /* Blank green frame */
984 		buffer_filled(dev, dma_q, buf);
985 	}
986 	get_next_buf(dma_q, &buf);
987 
988 	if (dev->vid_timeout_running == 1)
989 		mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
990 
991 	spin_unlock_irqrestore(&dev->slock, flags);
992 }
993 
994 static void au0828_vbi_buffer_timeout(unsigned long data)
995 {
996 	struct au0828_dev *dev = (struct au0828_dev *) data;
997 	struct au0828_dmaqueue *dma_q = &dev->vbiq;
998 	struct au0828_buffer *buf;
999 	unsigned char *vbi_data;
1000 	unsigned long flags = 0;
1001 
1002 	spin_lock_irqsave(&dev->slock, flags);
1003 
1004 	buf = dev->isoc_ctl.vbi_buf;
1005 	if (buf != NULL) {
1006 		vbi_data = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
1007 		memset(vbi_data, 0x00, buf->length);
1008 		buffer_filled(dev, dma_q, buf);
1009 	}
1010 	vbi_get_next_buf(dma_q, &buf);
1011 
1012 	if (dev->vbi_timeout_running == 1)
1013 		mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1014 	spin_unlock_irqrestore(&dev->slock, flags);
1015 }
1016 
1017 static int au0828_v4l2_open(struct file *filp)
1018 {
1019 	struct au0828_dev *dev = video_drvdata(filp);
1020 	int ret;
1021 
1022 	dprintk(1,
1023 		"%s called std_set %d dev_state %ld stream users %d users %d\n",
1024 		__func__, dev->std_set_in_tuner_core, dev->dev_state,
1025 		dev->streaming_users, dev->users);
1026 
1027 	if (mutex_lock_interruptible(&dev->lock))
1028 		return -ERESTARTSYS;
1029 
1030 	ret = v4l2_fh_open(filp);
1031 	if (ret) {
1032 		au0828_isocdbg("%s: v4l2_fh_open() returned error %d\n",
1033 				__func__, ret);
1034 		mutex_unlock(&dev->lock);
1035 		return ret;
1036 	}
1037 
1038 	if (dev->users == 0) {
1039 		au0828_analog_stream_enable(dev);
1040 		au0828_analog_stream_reset(dev);
1041 		dev->stream_state = STREAM_OFF;
1042 		set_bit(DEV_INITIALIZED, &dev->dev_state);
1043 	}
1044 	dev->users++;
1045 	mutex_unlock(&dev->lock);
1046 	return ret;
1047 }
1048 
1049 static int au0828_v4l2_close(struct file *filp)
1050 {
1051 	int ret;
1052 	struct au0828_dev *dev = video_drvdata(filp);
1053 	struct video_device *vdev = video_devdata(filp);
1054 
1055 	dprintk(1,
1056 		"%s called std_set %d dev_state %ld stream users %d users %d\n",
1057 		__func__, dev->std_set_in_tuner_core, dev->dev_state,
1058 		dev->streaming_users, dev->users);
1059 
1060 	mutex_lock(&dev->lock);
1061 	if (vdev->vfl_type == VFL_TYPE_GRABBER && dev->vid_timeout_running) {
1062 		/* Cancel timeout thread in case they didn't call streamoff */
1063 		dev->vid_timeout_running = 0;
1064 		del_timer_sync(&dev->vid_timeout);
1065 	} else if (vdev->vfl_type == VFL_TYPE_VBI &&
1066 			dev->vbi_timeout_running) {
1067 		/* Cancel timeout thread in case they didn't call streamoff */
1068 		dev->vbi_timeout_running = 0;
1069 		del_timer_sync(&dev->vbi_timeout);
1070 	}
1071 
1072 	if (test_bit(DEV_DISCONNECTED, &dev->dev_state))
1073 		goto end;
1074 
1075 	if (dev->users == 1) {
1076 		/*
1077 		 * Avoid putting tuner in sleep if DVB or ALSA are
1078 		 * streaming.
1079 		 *
1080 		 * On most USB devices  like au0828 the tuner can
1081 		 * be safely put in sleep stare here if ALSA isn't
1082 		 * streaming. Exceptions are some very old USB tuner
1083 		 * models such as em28xx-based WinTV USB2 which have
1084 		 * a separate audio output jack. The devices that have
1085 		 * a separate audio output jack have analog tuners,
1086 		 * like Philips FM1236. Those devices are always on,
1087 		 * so the s_power callback are silently ignored.
1088 		 * So, the current logic here does the following:
1089 		 * Disable (put tuner to sleep) when
1090 		 * - ALSA and DVB aren't not streaming;
1091 		 * - the last V4L2 file handler is closed.
1092 		 *
1093 		 * FIXME:
1094 		 *
1095 		 * Additionally, this logic could be improved to
1096 		 * disable the media source if the above conditions
1097 		 * are met and if the device:
1098 		 * - doesn't have a separate audio out plug (or
1099 		 * - doesn't use a silicon tuner like xc2028/3028/4000/5000).
1100 		 *
1101 		 * Once this additional logic is in place, a callback
1102 		 * is needed to enable the media source and power on
1103 		 * the tuner, for radio to work.
1104 		*/
1105 		ret = v4l_enable_media_source(vdev);
1106 		if (ret == 0)
1107 			v4l2_device_call_all(&dev->v4l2_dev, 0, core,
1108 					     s_power, 0);
1109 		dev->std_set_in_tuner_core = 0;
1110 
1111 		/* When close the device, set the usb intf0 into alt0 to free
1112 		   USB bandwidth */
1113 		ret = usb_set_interface(dev->usbdev, 0, 0);
1114 		if (ret < 0)
1115 			pr_info("Au0828 can't set alternate to 0!\n");
1116 	}
1117 end:
1118 	_vb2_fop_release(filp, NULL);
1119 	dev->users--;
1120 	mutex_unlock(&dev->lock);
1121 	return 0;
1122 }
1123 
1124 /* Must be called with dev->lock held */
1125 static void au0828_init_tuner(struct au0828_dev *dev)
1126 {
1127 	struct v4l2_frequency f = {
1128 		.frequency = dev->ctrl_freq,
1129 		.type = V4L2_TUNER_ANALOG_TV,
1130 	};
1131 
1132 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1133 		dev->std_set_in_tuner_core, dev->dev_state);
1134 
1135 	if (dev->std_set_in_tuner_core)
1136 		return;
1137 	dev->std_set_in_tuner_core = 1;
1138 	i2c_gate_ctrl(dev, 1);
1139 	/* If we've never sent the standard in tuner core, do so now.
1140 	   We don't do this at device probe because we don't want to
1141 	   incur the cost of a firmware load */
1142 	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, dev->std);
1143 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
1144 	i2c_gate_ctrl(dev, 0);
1145 }
1146 
1147 static int au0828_set_format(struct au0828_dev *dev, unsigned int cmd,
1148 			     struct v4l2_format *format)
1149 {
1150 	int ret;
1151 	int width = format->fmt.pix.width;
1152 	int height = format->fmt.pix.height;
1153 
1154 	/* If they are demanding a format other than the one we support,
1155 	   bail out (tvtime asks for UYVY and then retries with YUYV) */
1156 	if (format->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
1157 		return -EINVAL;
1158 
1159 	/* format->fmt.pix.width only support 720 and height 480 */
1160 	if (width != 720)
1161 		width = 720;
1162 	if (height != 480)
1163 		height = 480;
1164 
1165 	format->fmt.pix.width = width;
1166 	format->fmt.pix.height = height;
1167 	format->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1168 	format->fmt.pix.bytesperline = width * 2;
1169 	format->fmt.pix.sizeimage = width * height * 2;
1170 	format->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1171 	format->fmt.pix.field = V4L2_FIELD_INTERLACED;
1172 	format->fmt.pix.priv = 0;
1173 
1174 	if (cmd == VIDIOC_TRY_FMT)
1175 		return 0;
1176 
1177 	/* maybe set new image format, driver current only support 720*480 */
1178 	dev->width = width;
1179 	dev->height = height;
1180 	dev->frame_size = width * height * 2;
1181 	dev->field_size = width * height;
1182 	dev->bytesperline = width * 2;
1183 
1184 	if (dev->stream_state == STREAM_ON) {
1185 		dprintk(1, "VIDIOC_SET_FMT: interrupting stream!\n");
1186 		ret = au0828_stream_interrupt(dev);
1187 		if (ret != 0) {
1188 			dprintk(1, "error interrupting video stream!\n");
1189 			return ret;
1190 		}
1191 	}
1192 
1193 	au0828_analog_stream_enable(dev);
1194 
1195 	return 0;
1196 }
1197 
1198 static int vidioc_querycap(struct file *file, void  *priv,
1199 			   struct v4l2_capability *cap)
1200 {
1201 	struct video_device *vdev = video_devdata(file);
1202 	struct au0828_dev *dev = video_drvdata(file);
1203 
1204 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1205 		dev->std_set_in_tuner_core, dev->dev_state);
1206 
1207 	strlcpy(cap->driver, "au0828", sizeof(cap->driver));
1208 	strlcpy(cap->card, dev->board.name, sizeof(cap->card));
1209 	usb_make_path(dev->usbdev, cap->bus_info, sizeof(cap->bus_info));
1210 
1211 	/* set the device capabilities */
1212 	cap->device_caps = V4L2_CAP_AUDIO |
1213 		V4L2_CAP_READWRITE |
1214 		V4L2_CAP_STREAMING |
1215 		V4L2_CAP_TUNER;
1216 	if (vdev->vfl_type == VFL_TYPE_GRABBER)
1217 		cap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
1218 	else
1219 		cap->device_caps |= V4L2_CAP_VBI_CAPTURE;
1220 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS |
1221 		V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE;
1222 	return 0;
1223 }
1224 
1225 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
1226 					struct v4l2_fmtdesc *f)
1227 {
1228 	if (f->index)
1229 		return -EINVAL;
1230 
1231 	dprintk(1, "%s called\n", __func__);
1232 
1233 	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1234 	strcpy(f->description, "Packed YUV2");
1235 
1236 	f->flags = 0;
1237 	f->pixelformat = V4L2_PIX_FMT_UYVY;
1238 
1239 	return 0;
1240 }
1241 
1242 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1243 					struct v4l2_format *f)
1244 {
1245 	struct au0828_dev *dev = video_drvdata(file);
1246 
1247 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1248 		dev->std_set_in_tuner_core, dev->dev_state);
1249 
1250 	f->fmt.pix.width = dev->width;
1251 	f->fmt.pix.height = dev->height;
1252 	f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
1253 	f->fmt.pix.bytesperline = dev->bytesperline;
1254 	f->fmt.pix.sizeimage = dev->frame_size;
1255 	f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* NTSC/PAL */
1256 	f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1257 	f->fmt.pix.priv = 0;
1258 	return 0;
1259 }
1260 
1261 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1262 				  struct v4l2_format *f)
1263 {
1264 	struct au0828_dev *dev = video_drvdata(file);
1265 
1266 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1267 		dev->std_set_in_tuner_core, dev->dev_state);
1268 
1269 	return au0828_set_format(dev, VIDIOC_TRY_FMT, f);
1270 }
1271 
1272 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1273 				struct v4l2_format *f)
1274 {
1275 	struct au0828_dev *dev = video_drvdata(file);
1276 	int rc;
1277 
1278 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1279 		dev->std_set_in_tuner_core, dev->dev_state);
1280 
1281 	rc = check_dev(dev);
1282 	if (rc < 0)
1283 		return rc;
1284 
1285 	if (vb2_is_busy(&dev->vb_vidq)) {
1286 		pr_info("%s queue busy\n", __func__);
1287 		rc = -EBUSY;
1288 		goto out;
1289 	}
1290 
1291 	rc = au0828_set_format(dev, VIDIOC_S_FMT, f);
1292 out:
1293 	return rc;
1294 }
1295 
1296 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)
1297 {
1298 	struct au0828_dev *dev = video_drvdata(file);
1299 
1300 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1301 		dev->std_set_in_tuner_core, dev->dev_state);
1302 
1303 	if (norm == dev->std)
1304 		return 0;
1305 
1306 	if (dev->streaming_users > 0)
1307 		return -EBUSY;
1308 
1309 	dev->std = norm;
1310 
1311 	au0828_init_tuner(dev);
1312 
1313 	i2c_gate_ctrl(dev, 1);
1314 
1315 	/*
1316 	 * FIXME: when we support something other than 60Hz standards,
1317 	 * we are going to have to make the au0828 bridge adjust the size
1318 	 * of its capture buffer, which is currently hardcoded at 720x480
1319 	 */
1320 
1321 	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_std, norm);
1322 
1323 	i2c_gate_ctrl(dev, 0);
1324 
1325 	return 0;
1326 }
1327 
1328 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
1329 {
1330 	struct au0828_dev *dev = video_drvdata(file);
1331 
1332 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1333 		dev->std_set_in_tuner_core, dev->dev_state);
1334 
1335 	*norm = dev->std;
1336 	return 0;
1337 }
1338 
1339 static int vidioc_enum_input(struct file *file, void *priv,
1340 				struct v4l2_input *input)
1341 {
1342 	struct au0828_dev *dev = video_drvdata(file);
1343 	unsigned int tmp;
1344 
1345 	static const char *inames[] = {
1346 		[AU0828_VMUX_UNDEFINED] = "Undefined",
1347 		[AU0828_VMUX_COMPOSITE] = "Composite",
1348 		[AU0828_VMUX_SVIDEO] = "S-Video",
1349 		[AU0828_VMUX_CABLE] = "Cable TV",
1350 		[AU0828_VMUX_TELEVISION] = "Television",
1351 		[AU0828_VMUX_DVB] = "DVB",
1352 	};
1353 
1354 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1355 		dev->std_set_in_tuner_core, dev->dev_state);
1356 
1357 	tmp = input->index;
1358 
1359 	if (tmp >= AU0828_MAX_INPUT)
1360 		return -EINVAL;
1361 	if (AUVI_INPUT(tmp).type == 0)
1362 		return -EINVAL;
1363 
1364 	input->index = tmp;
1365 	strcpy(input->name, inames[AUVI_INPUT(tmp).type]);
1366 	if ((AUVI_INPUT(tmp).type == AU0828_VMUX_TELEVISION) ||
1367 	    (AUVI_INPUT(tmp).type == AU0828_VMUX_CABLE)) {
1368 		input->type |= V4L2_INPUT_TYPE_TUNER;
1369 		input->audioset = 1;
1370 	} else {
1371 		input->type |= V4L2_INPUT_TYPE_CAMERA;
1372 		input->audioset = 2;
1373 	}
1374 
1375 	input->std = dev->vdev.tvnorms;
1376 
1377 	return 0;
1378 }
1379 
1380 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1381 {
1382 	struct au0828_dev *dev = video_drvdata(file);
1383 
1384 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1385 		dev->std_set_in_tuner_core, dev->dev_state);
1386 
1387 	*i = dev->ctrl_input;
1388 	return 0;
1389 }
1390 
1391 static void au0828_s_input(struct au0828_dev *dev, int index)
1392 {
1393 	int i;
1394 
1395 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1396 		dev->std_set_in_tuner_core, dev->dev_state);
1397 
1398 	switch (AUVI_INPUT(index).type) {
1399 	case AU0828_VMUX_SVIDEO:
1400 		dev->input_type = AU0828_VMUX_SVIDEO;
1401 		dev->ctrl_ainput = 1;
1402 		break;
1403 	case AU0828_VMUX_COMPOSITE:
1404 		dev->input_type = AU0828_VMUX_COMPOSITE;
1405 		dev->ctrl_ainput = 1;
1406 		break;
1407 	case AU0828_VMUX_TELEVISION:
1408 		dev->input_type = AU0828_VMUX_TELEVISION;
1409 		dev->ctrl_ainput = 0;
1410 		break;
1411 	default:
1412 		dprintk(1, "unknown input type set [%d]\n",
1413 			AUVI_INPUT(index).type);
1414 		return;
1415 	}
1416 
1417 	dev->ctrl_input = index;
1418 
1419 	v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_routing,
1420 			AUVI_INPUT(index).vmux, 0, 0);
1421 
1422 	for (i = 0; i < AU0828_MAX_INPUT; i++) {
1423 		int enable = 0;
1424 		if (AUVI_INPUT(i).audio_setup == NULL)
1425 			continue;
1426 
1427 		if (i == index)
1428 			enable = 1;
1429 		else
1430 			enable = 0;
1431 		if (enable) {
1432 			(AUVI_INPUT(i).audio_setup)(dev, enable);
1433 		} else {
1434 			/* Make sure we leave it turned on if some
1435 			   other input is routed to this callback */
1436 			if ((AUVI_INPUT(i).audio_setup) !=
1437 			    ((AUVI_INPUT(index).audio_setup))) {
1438 				(AUVI_INPUT(i).audio_setup)(dev, enable);
1439 			}
1440 		}
1441 	}
1442 
1443 	v4l2_device_call_all(&dev->v4l2_dev, 0, audio, s_routing,
1444 			AUVI_INPUT(index).amux, 0, 0);
1445 }
1446 
1447 static int vidioc_s_input(struct file *file, void *priv, unsigned int index)
1448 {
1449 	struct au0828_dev *dev = video_drvdata(file);
1450 	struct video_device *vfd = video_devdata(file);
1451 
1452 	dprintk(1, "VIDIOC_S_INPUT in function %s, input=%d\n", __func__,
1453 		index);
1454 	if (index >= AU0828_MAX_INPUT)
1455 		return -EINVAL;
1456 	if (AUVI_INPUT(index).type == 0)
1457 		return -EINVAL;
1458 
1459 	if (dev->ctrl_input == index)
1460 		return 0;
1461 
1462 	au0828_s_input(dev, index);
1463 
1464 	/*
1465 	 * Input has been changed. Disable the media source
1466 	 * associated with the old input and enable source
1467 	 * for the newly set input
1468 	 */
1469 	v4l_disable_media_source(vfd);
1470 	return v4l_enable_media_source(vfd);
1471 }
1472 
1473 static int vidioc_enumaudio(struct file *file, void *priv, struct v4l2_audio *a)
1474 {
1475 	if (a->index > 1)
1476 		return -EINVAL;
1477 
1478 	dprintk(1, "%s called\n", __func__);
1479 
1480 	if (a->index == 0)
1481 		strcpy(a->name, "Television");
1482 	else
1483 		strcpy(a->name, "Line in");
1484 
1485 	a->capability = V4L2_AUDCAP_STEREO;
1486 	return 0;
1487 }
1488 
1489 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
1490 {
1491 	struct au0828_dev *dev = video_drvdata(file);
1492 
1493 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1494 		dev->std_set_in_tuner_core, dev->dev_state);
1495 
1496 	a->index = dev->ctrl_ainput;
1497 	if (a->index == 0)
1498 		strcpy(a->name, "Television");
1499 	else
1500 		strcpy(a->name, "Line in");
1501 
1502 	a->capability = V4L2_AUDCAP_STEREO;
1503 	return 0;
1504 }
1505 
1506 static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a)
1507 {
1508 	struct au0828_dev *dev = video_drvdata(file);
1509 
1510 	if (a->index != dev->ctrl_ainput)
1511 		return -EINVAL;
1512 
1513 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1514 		dev->std_set_in_tuner_core, dev->dev_state);
1515 	return 0;
1516 }
1517 
1518 static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
1519 {
1520 	struct au0828_dev *dev = video_drvdata(file);
1521 	struct video_device *vfd = video_devdata(file);
1522 	int ret;
1523 
1524 	if (t->index != 0)
1525 		return -EINVAL;
1526 
1527 	ret = v4l_enable_media_source(vfd);
1528 	if (ret)
1529 		return ret;
1530 
1531 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1532 		dev->std_set_in_tuner_core, dev->dev_state);
1533 
1534 	strcpy(t->name, "Auvitek tuner");
1535 
1536 	au0828_init_tuner(dev);
1537 	i2c_gate_ctrl(dev, 1);
1538 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
1539 	i2c_gate_ctrl(dev, 0);
1540 	return 0;
1541 }
1542 
1543 static int vidioc_s_tuner(struct file *file, void *priv,
1544 				const struct v4l2_tuner *t)
1545 {
1546 	struct au0828_dev *dev = video_drvdata(file);
1547 
1548 	if (t->index != 0)
1549 		return -EINVAL;
1550 
1551 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1552 		dev->std_set_in_tuner_core, dev->dev_state);
1553 
1554 	au0828_init_tuner(dev);
1555 	i2c_gate_ctrl(dev, 1);
1556 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_tuner, t);
1557 	i2c_gate_ctrl(dev, 0);
1558 
1559 	dprintk(1, "VIDIOC_S_TUNER: signal = %x, afc = %x\n", t->signal,
1560 		t->afc);
1561 
1562 	return 0;
1563 
1564 }
1565 
1566 static int vidioc_g_frequency(struct file *file, void *priv,
1567 				struct v4l2_frequency *freq)
1568 {
1569 	struct au0828_dev *dev = video_drvdata(file);
1570 
1571 	if (freq->tuner != 0)
1572 		return -EINVAL;
1573 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1574 		dev->std_set_in_tuner_core, dev->dev_state);
1575 	freq->frequency = dev->ctrl_freq;
1576 	return 0;
1577 }
1578 
1579 static int vidioc_s_frequency(struct file *file, void *priv,
1580 				const struct v4l2_frequency *freq)
1581 {
1582 	struct au0828_dev *dev = video_drvdata(file);
1583 	struct v4l2_frequency new_freq = *freq;
1584 
1585 	if (freq->tuner != 0)
1586 		return -EINVAL;
1587 
1588 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1589 		dev->std_set_in_tuner_core, dev->dev_state);
1590 
1591 	au0828_init_tuner(dev);
1592 	i2c_gate_ctrl(dev, 1);
1593 
1594 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, freq);
1595 	/* Get the actual set (and possibly clamped) frequency */
1596 	v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, &new_freq);
1597 	dev->ctrl_freq = new_freq.frequency;
1598 
1599 	i2c_gate_ctrl(dev, 0);
1600 
1601 	au0828_analog_stream_reset(dev);
1602 
1603 	return 0;
1604 }
1605 
1606 
1607 /* RAW VBI ioctls */
1608 
1609 static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,
1610 				struct v4l2_format *format)
1611 {
1612 	struct au0828_dev *dev = video_drvdata(file);
1613 
1614 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1615 		dev->std_set_in_tuner_core, dev->dev_state);
1616 
1617 	format->fmt.vbi.samples_per_line = dev->vbi_width;
1618 	format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
1619 	format->fmt.vbi.offset = 0;
1620 	format->fmt.vbi.flags = 0;
1621 	format->fmt.vbi.sampling_rate = 6750000 * 4 / 2;
1622 
1623 	format->fmt.vbi.count[0] = dev->vbi_height;
1624 	format->fmt.vbi.count[1] = dev->vbi_height;
1625 	format->fmt.vbi.start[0] = 21;
1626 	format->fmt.vbi.start[1] = 284;
1627 	memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved));
1628 
1629 	return 0;
1630 }
1631 
1632 static int vidioc_cropcap(struct file *file, void *priv,
1633 			  struct v4l2_cropcap *cc)
1634 {
1635 	struct au0828_dev *dev = video_drvdata(file);
1636 
1637 	if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1638 		return -EINVAL;
1639 
1640 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1641 		dev->std_set_in_tuner_core, dev->dev_state);
1642 
1643 	cc->bounds.left = 0;
1644 	cc->bounds.top = 0;
1645 	cc->bounds.width = dev->width;
1646 	cc->bounds.height = dev->height;
1647 
1648 	cc->defrect = cc->bounds;
1649 
1650 	cc->pixelaspect.numerator = 54;
1651 	cc->pixelaspect.denominator = 59;
1652 
1653 	return 0;
1654 }
1655 
1656 #ifdef CONFIG_VIDEO_ADV_DEBUG
1657 static int vidioc_g_register(struct file *file, void *priv,
1658 			     struct v4l2_dbg_register *reg)
1659 {
1660 	struct au0828_dev *dev = video_drvdata(file);
1661 
1662 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1663 		dev->std_set_in_tuner_core, dev->dev_state);
1664 
1665 	reg->val = au0828_read(dev, reg->reg);
1666 	reg->size = 1;
1667 	return 0;
1668 }
1669 
1670 static int vidioc_s_register(struct file *file, void *priv,
1671 			     const struct v4l2_dbg_register *reg)
1672 {
1673 	struct au0828_dev *dev = video_drvdata(file);
1674 
1675 	dprintk(1, "%s called std_set %d dev_state %ld\n", __func__,
1676 		dev->std_set_in_tuner_core, dev->dev_state);
1677 
1678 	return au0828_writereg(dev, reg->reg, reg->val);
1679 }
1680 #endif
1681 
1682 static int vidioc_log_status(struct file *file, void *fh)
1683 {
1684 	struct video_device *vdev = video_devdata(file);
1685 
1686 	dprintk(1, "%s called\n", __func__);
1687 
1688 	v4l2_ctrl_log_status(file, fh);
1689 	v4l2_device_call_all(vdev->v4l2_dev, 0, core, log_status);
1690 	return 0;
1691 }
1692 
1693 void au0828_v4l2_suspend(struct au0828_dev *dev)
1694 {
1695 	struct urb *urb;
1696 	int i;
1697 
1698 	pr_info("stopping V4L2\n");
1699 
1700 	if (dev->stream_state == STREAM_ON) {
1701 		pr_info("stopping V4L2 active URBs\n");
1702 		au0828_analog_stream_disable(dev);
1703 		/* stop urbs */
1704 		for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1705 			urb = dev->isoc_ctl.urb[i];
1706 			if (urb) {
1707 				if (!irqs_disabled())
1708 					usb_kill_urb(urb);
1709 				else
1710 					usb_unlink_urb(urb);
1711 			}
1712 		}
1713 	}
1714 
1715 	if (dev->vid_timeout_running)
1716 		del_timer_sync(&dev->vid_timeout);
1717 	if (dev->vbi_timeout_running)
1718 		del_timer_sync(&dev->vbi_timeout);
1719 }
1720 
1721 void au0828_v4l2_resume(struct au0828_dev *dev)
1722 {
1723 	int i, rc;
1724 
1725 	pr_info("restarting V4L2\n");
1726 
1727 	if (dev->stream_state == STREAM_ON) {
1728 		au0828_stream_interrupt(dev);
1729 		au0828_init_tuner(dev);
1730 	}
1731 
1732 	if (dev->vid_timeout_running)
1733 		mod_timer(&dev->vid_timeout, jiffies + (HZ / 10));
1734 	if (dev->vbi_timeout_running)
1735 		mod_timer(&dev->vbi_timeout, jiffies + (HZ / 10));
1736 
1737 	/* If we were doing ac97 instead of i2s, it would go here...*/
1738 	au0828_i2s_init(dev);
1739 
1740 	au0828_analog_stream_enable(dev);
1741 
1742 	if (!(dev->stream_state == STREAM_ON)) {
1743 		au0828_analog_stream_reset(dev);
1744 		/* submit urbs */
1745 		for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
1746 			rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_ATOMIC);
1747 			if (rc) {
1748 				au0828_isocdbg("submit of urb %i failed (error=%i)\n",
1749 					       i, rc);
1750 				au0828_uninit_isoc(dev);
1751 			}
1752 		}
1753 	}
1754 }
1755 
1756 static struct v4l2_file_operations au0828_v4l_fops = {
1757 	.owner      = THIS_MODULE,
1758 	.open       = au0828_v4l2_open,
1759 	.release    = au0828_v4l2_close,
1760 	.read       = vb2_fop_read,
1761 	.poll       = vb2_fop_poll,
1762 	.mmap       = vb2_fop_mmap,
1763 	.unlocked_ioctl = video_ioctl2,
1764 };
1765 
1766 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1767 	.vidioc_querycap            = vidioc_querycap,
1768 	.vidioc_enum_fmt_vid_cap    = vidioc_enum_fmt_vid_cap,
1769 	.vidioc_g_fmt_vid_cap       = vidioc_g_fmt_vid_cap,
1770 	.vidioc_try_fmt_vid_cap     = vidioc_try_fmt_vid_cap,
1771 	.vidioc_s_fmt_vid_cap       = vidioc_s_fmt_vid_cap,
1772 	.vidioc_g_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1773 	.vidioc_try_fmt_vbi_cap     = vidioc_g_fmt_vbi_cap,
1774 	.vidioc_s_fmt_vbi_cap       = vidioc_g_fmt_vbi_cap,
1775 	.vidioc_enumaudio           = vidioc_enumaudio,
1776 	.vidioc_g_audio             = vidioc_g_audio,
1777 	.vidioc_s_audio             = vidioc_s_audio,
1778 	.vidioc_cropcap             = vidioc_cropcap,
1779 
1780 	.vidioc_reqbufs             = vb2_ioctl_reqbufs,
1781 	.vidioc_create_bufs         = vb2_ioctl_create_bufs,
1782 	.vidioc_prepare_buf         = vb2_ioctl_prepare_buf,
1783 	.vidioc_querybuf            = vb2_ioctl_querybuf,
1784 	.vidioc_qbuf                = vb2_ioctl_qbuf,
1785 	.vidioc_dqbuf               = vb2_ioctl_dqbuf,
1786 	.vidioc_expbuf               = vb2_ioctl_expbuf,
1787 
1788 	.vidioc_s_std               = vidioc_s_std,
1789 	.vidioc_g_std               = vidioc_g_std,
1790 	.vidioc_enum_input          = vidioc_enum_input,
1791 	.vidioc_g_input             = vidioc_g_input,
1792 	.vidioc_s_input             = vidioc_s_input,
1793 
1794 	.vidioc_streamon            = vb2_ioctl_streamon,
1795 	.vidioc_streamoff           = vb2_ioctl_streamoff,
1796 
1797 	.vidioc_g_tuner             = vidioc_g_tuner,
1798 	.vidioc_s_tuner             = vidioc_s_tuner,
1799 	.vidioc_g_frequency         = vidioc_g_frequency,
1800 	.vidioc_s_frequency         = vidioc_s_frequency,
1801 #ifdef CONFIG_VIDEO_ADV_DEBUG
1802 	.vidioc_g_register          = vidioc_g_register,
1803 	.vidioc_s_register          = vidioc_s_register,
1804 #endif
1805 	.vidioc_log_status	    = vidioc_log_status,
1806 	.vidioc_subscribe_event     = v4l2_ctrl_subscribe_event,
1807 	.vidioc_unsubscribe_event   = v4l2_event_unsubscribe,
1808 };
1809 
1810 static const struct video_device au0828_video_template = {
1811 	.fops                       = &au0828_v4l_fops,
1812 	.release                    = video_device_release_empty,
1813 	.ioctl_ops 		    = &video_ioctl_ops,
1814 	.tvnorms                    = V4L2_STD_NTSC_M | V4L2_STD_PAL_M,
1815 };
1816 
1817 static int au0828_vb2_setup(struct au0828_dev *dev)
1818 {
1819 	int rc;
1820 	struct vb2_queue *q;
1821 
1822 	/* Setup Videobuf2 for Video capture */
1823 	q = &dev->vb_vidq;
1824 	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1825 	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1826 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1827 	q->drv_priv = dev;
1828 	q->buf_struct_size = sizeof(struct au0828_buffer);
1829 	q->ops = &au0828_video_qops;
1830 	q->mem_ops = &vb2_vmalloc_memops;
1831 
1832 	rc = vb2_queue_init(q);
1833 	if (rc < 0)
1834 		return rc;
1835 
1836 	/* Setup Videobuf2 for VBI capture */
1837 	q = &dev->vb_vbiq;
1838 	q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1839 	q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1840 	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1841 	q->drv_priv = dev;
1842 	q->buf_struct_size = sizeof(struct au0828_buffer);
1843 	q->ops = &au0828_vbi_qops;
1844 	q->mem_ops = &vb2_vmalloc_memops;
1845 
1846 	rc = vb2_queue_init(q);
1847 	if (rc < 0)
1848 		return rc;
1849 
1850 	return 0;
1851 }
1852 
1853 static void au0828_analog_create_entities(struct au0828_dev *dev)
1854 {
1855 #if defined(CONFIG_MEDIA_CONTROLLER)
1856 	static const char * const inames[] = {
1857 		[AU0828_VMUX_COMPOSITE] = "Composite",
1858 		[AU0828_VMUX_SVIDEO] = "S-Video",
1859 		[AU0828_VMUX_CABLE] = "Cable TV",
1860 		[AU0828_VMUX_TELEVISION] = "Television",
1861 		[AU0828_VMUX_DVB] = "DVB",
1862 	};
1863 	int ret, i;
1864 
1865 	/* Initialize Video and VBI pads */
1866 	dev->video_pad.flags = MEDIA_PAD_FL_SINK;
1867 	ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
1868 	if (ret < 0)
1869 		pr_err("failed to initialize video media entity!\n");
1870 
1871 	dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
1872 	ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
1873 	if (ret < 0)
1874 		pr_err("failed to initialize vbi media entity!\n");
1875 
1876 	/* Create entities for each input connector */
1877 	for (i = 0; i < AU0828_MAX_INPUT; i++) {
1878 		struct media_entity *ent = &dev->input_ent[i];
1879 
1880 		if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
1881 			break;
1882 
1883 		ent->name = inames[AUVI_INPUT(i).type];
1884 		ent->flags = MEDIA_ENT_FL_CONNECTOR;
1885 		dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
1886 
1887 		switch (AUVI_INPUT(i).type) {
1888 		case AU0828_VMUX_COMPOSITE:
1889 			ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
1890 			break;
1891 		case AU0828_VMUX_SVIDEO:
1892 			ent->function = MEDIA_ENT_F_CONN_SVIDEO;
1893 			break;
1894 		case AU0828_VMUX_CABLE:
1895 		case AU0828_VMUX_TELEVISION:
1896 		case AU0828_VMUX_DVB:
1897 		default: /* Just to shut up a warning */
1898 			ent->function = MEDIA_ENT_F_CONN_RF;
1899 			break;
1900 		}
1901 
1902 		ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
1903 		if (ret < 0)
1904 			pr_err("failed to initialize input pad[%d]!\n", i);
1905 
1906 		ret = media_device_register_entity(dev->media_dev, ent);
1907 		if (ret < 0)
1908 			pr_err("failed to register input entity %d!\n", i);
1909 	}
1910 #endif
1911 }
1912 
1913 /**************************************************************************/
1914 
1915 int au0828_analog_register(struct au0828_dev *dev,
1916 			   struct usb_interface *interface)
1917 {
1918 	int retval = -ENOMEM;
1919 	struct usb_host_interface *iface_desc;
1920 	struct usb_endpoint_descriptor *endpoint;
1921 	int i, ret;
1922 
1923 	dprintk(1, "au0828_analog_register called for intf#%d!\n",
1924 		interface->cur_altsetting->desc.bInterfaceNumber);
1925 
1926 	/* No analog TV */
1927 	if (AUVI_INPUT(0).type == AU0828_VMUX_UNDEFINED)
1928 		return 0;
1929 
1930 	/* set au0828 usb interface0 to as5 */
1931 	retval = usb_set_interface(dev->usbdev,
1932 			interface->cur_altsetting->desc.bInterfaceNumber, 5);
1933 	if (retval != 0) {
1934 		pr_info("Failure setting usb interface0 to as5\n");
1935 		return retval;
1936 	}
1937 
1938 	/* Figure out which endpoint has the isoc interface */
1939 	iface_desc = interface->cur_altsetting;
1940 	for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
1941 		endpoint = &iface_desc->endpoint[i].desc;
1942 		if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1943 		     == USB_DIR_IN) &&
1944 		    ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1945 		     == USB_ENDPOINT_XFER_ISOC)) {
1946 
1947 			/* we find our isoc in endpoint */
1948 			u16 tmp = le16_to_cpu(endpoint->wMaxPacketSize);
1949 			dev->max_pkt_size = (tmp & 0x07ff) *
1950 				(((tmp & 0x1800) >> 11) + 1);
1951 			dev->isoc_in_endpointaddr = endpoint->bEndpointAddress;
1952 			dprintk(1,
1953 				"Found isoc endpoint 0x%02x, max size = %d\n",
1954 				dev->isoc_in_endpointaddr, dev->max_pkt_size);
1955 		}
1956 	}
1957 	if (!(dev->isoc_in_endpointaddr)) {
1958 		pr_info("Could not locate isoc endpoint\n");
1959 		return -ENODEV;
1960 	}
1961 
1962 	init_waitqueue_head(&dev->open);
1963 	spin_lock_init(&dev->slock);
1964 
1965 	/* init video dma queues */
1966 	INIT_LIST_HEAD(&dev->vidq.active);
1967 	INIT_LIST_HEAD(&dev->vbiq.active);
1968 
1969 	setup_timer(&dev->vid_timeout, au0828_vid_buffer_timeout,
1970 		    (unsigned long)dev);
1971 	setup_timer(&dev->vbi_timeout, au0828_vbi_buffer_timeout,
1972 		    (unsigned long)dev);
1973 
1974 	dev->width = NTSC_STD_W;
1975 	dev->height = NTSC_STD_H;
1976 	dev->field_size = dev->width * dev->height;
1977 	dev->frame_size = dev->field_size << 1;
1978 	dev->bytesperline = dev->width << 1;
1979 	dev->vbi_width = 720;
1980 	dev->vbi_height = 1;
1981 	dev->ctrl_ainput = 0;
1982 	dev->ctrl_freq = 960;
1983 	dev->std = V4L2_STD_NTSC_M;
1984 	/* Default input is TV Tuner */
1985 	au0828_s_input(dev, 0);
1986 
1987 	mutex_init(&dev->vb_queue_lock);
1988 	mutex_init(&dev->vb_vbi_queue_lock);
1989 
1990 	/* Fill the video capture device struct */
1991 	dev->vdev = au0828_video_template;
1992 	dev->vdev.v4l2_dev = &dev->v4l2_dev;
1993 	dev->vdev.lock = &dev->lock;
1994 	dev->vdev.queue = &dev->vb_vidq;
1995 	dev->vdev.queue->lock = &dev->vb_queue_lock;
1996 	strcpy(dev->vdev.name, "au0828a video");
1997 
1998 	/* Setup the VBI device */
1999 	dev->vbi_dev = au0828_video_template;
2000 	dev->vbi_dev.v4l2_dev = &dev->v4l2_dev;
2001 	dev->vbi_dev.lock = &dev->lock;
2002 	dev->vbi_dev.queue = &dev->vb_vbiq;
2003 	dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
2004 	strcpy(dev->vbi_dev.name, "au0828a vbi");
2005 
2006 	/* Init entities at the Media Controller */
2007 	au0828_analog_create_entities(dev);
2008 
2009 	/* initialize videobuf2 stuff */
2010 	retval = au0828_vb2_setup(dev);
2011 	if (retval != 0) {
2012 		dprintk(1, "unable to setup videobuf2 queues (error = %d).\n",
2013 			retval);
2014 		return -ENODEV;
2015 	}
2016 
2017 	/* Register the v4l2 device */
2018 	video_set_drvdata(&dev->vdev, dev);
2019 	retval = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
2020 	if (retval != 0) {
2021 		dprintk(1, "unable to register video device (error = %d).\n",
2022 			retval);
2023 		ret = -ENODEV;
2024 		goto err_reg_vdev;
2025 	}
2026 
2027 	/* Register the vbi device */
2028 	video_set_drvdata(&dev->vbi_dev, dev);
2029 	retval = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI, -1);
2030 	if (retval != 0) {
2031 		dprintk(1, "unable to register vbi device (error = %d).\n",
2032 			retval);
2033 		ret = -ENODEV;
2034 		goto err_reg_vbi_dev;
2035 	}
2036 
2037 #ifdef CONFIG_MEDIA_CONTROLLER
2038 	retval = v4l2_mc_create_media_graph(dev->media_dev);
2039 	if (retval) {
2040 		pr_err("%s() au0282_dev_register failed to create graph\n",
2041 			__func__);
2042 		ret = -ENODEV;
2043 		goto err_reg_vbi_dev;
2044 	}
2045 #endif
2046 
2047 	dprintk(1, "%s completed!\n", __func__);
2048 
2049 	return 0;
2050 
2051 err_reg_vbi_dev:
2052 	video_unregister_device(&dev->vdev);
2053 err_reg_vdev:
2054 	vb2_queue_release(&dev->vb_vidq);
2055 	vb2_queue_release(&dev->vb_vbiq);
2056 	return ret;
2057 }
2058 
2059