1 /*
2  * Hauppauge HD PVR USB driver - video 4 linux 2 interface
3  *
4  * Copyright (C) 2008      Janne Grunau (j@jannau.net)
5  *
6  *	This program is free software; you can redistribute it and/or
7  *	modify it under the terms of the GNU General Public License as
8  *	published by the Free Software Foundation, version 2.
9  *
10  */
11 
12 #include <linux/kernel.h>
13 #include <linux/errno.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/module.h>
17 #include <linux/uaccess.h>
18 #include <linux/usb.h>
19 #include <linux/mutex.h>
20 #include <linux/workqueue.h>
21 
22 #include <linux/videodev2.h>
23 #include <linux/v4l2-dv-timings.h>
24 #include <media/v4l2-dev.h>
25 #include <media/v4l2-common.h>
26 #include <media/v4l2-dv-timings.h>
27 #include <media/v4l2-ioctl.h>
28 #include <media/v4l2-event.h>
29 #include "hdpvr.h"
30 
31 #define BULK_URB_TIMEOUT   90 /* 0.09 seconds */
32 
33 #define print_buffer_status() { \
34 		v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,	\
35 			 "%s:%d buffer stat: %d free, %d proc\n",	\
36 			 __func__, __LINE__,				\
37 			 list_size(&dev->free_buff_list),		\
38 			 list_size(&dev->rec_buff_list)); }
39 
40 static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
41 	V4L2_DV_BT_CEA_720X480I59_94,
42 	V4L2_DV_BT_CEA_720X576I50,
43 	V4L2_DV_BT_CEA_720X480P59_94,
44 	V4L2_DV_BT_CEA_720X576P50,
45 	V4L2_DV_BT_CEA_1280X720P50,
46 	V4L2_DV_BT_CEA_1280X720P60,
47 	V4L2_DV_BT_CEA_1920X1080I50,
48 	V4L2_DV_BT_CEA_1920X1080I60,
49 };
50 
51 /* Use 480i59 as the default timings */
52 #define HDPVR_DEF_DV_TIMINGS_IDX (0)
53 
54 struct hdpvr_fh {
55 	struct v4l2_fh fh;
56 	bool legacy_mode;
57 };
58 
59 static uint list_size(struct list_head *list)
60 {
61 	struct list_head *tmp;
62 	uint count = 0;
63 
64 	list_for_each(tmp, list) {
65 		count++;
66 	}
67 
68 	return count;
69 }
70 
71 /*=========================================================================*/
72 /* urb callback */
73 static void hdpvr_read_bulk_callback(struct urb *urb)
74 {
75 	struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
76 	struct hdpvr_device *dev = buf->dev;
77 
78 	/* marking buffer as received and wake waiting */
79 	buf->status = BUFSTAT_READY;
80 	wake_up_interruptible(&dev->wait_data);
81 }
82 
83 /*=========================================================================*/
84 /* buffer bits */
85 
86 /* function expects dev->io_mutex to be hold by caller */
87 int hdpvr_cancel_queue(struct hdpvr_device *dev)
88 {
89 	struct hdpvr_buffer *buf;
90 
91 	list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
92 		usb_kill_urb(buf->urb);
93 		buf->status = BUFSTAT_AVAILABLE;
94 	}
95 
96 	list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
97 
98 	return 0;
99 }
100 
101 static int hdpvr_free_queue(struct list_head *q)
102 {
103 	struct list_head *tmp;
104 	struct list_head *p;
105 	struct hdpvr_buffer *buf;
106 	struct urb *urb;
107 
108 	for (p = q->next; p != q;) {
109 		buf = list_entry(p, struct hdpvr_buffer, buff_list);
110 
111 		urb = buf->urb;
112 		usb_free_coherent(urb->dev, urb->transfer_buffer_length,
113 				  urb->transfer_buffer, urb->transfer_dma);
114 		usb_free_urb(urb);
115 		tmp = p->next;
116 		list_del(p);
117 		kfree(buf);
118 		p = tmp;
119 	}
120 
121 	return 0;
122 }
123 
124 /* function expects dev->io_mutex to be hold by caller */
125 int hdpvr_free_buffers(struct hdpvr_device *dev)
126 {
127 	hdpvr_cancel_queue(dev);
128 
129 	hdpvr_free_queue(&dev->free_buff_list);
130 	hdpvr_free_queue(&dev->rec_buff_list);
131 
132 	return 0;
133 }
134 
135 /* function expects dev->io_mutex to be hold by caller */
136 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
137 {
138 	uint i;
139 	int retval = -ENOMEM;
140 	u8 *mem;
141 	struct hdpvr_buffer *buf;
142 	struct urb *urb;
143 
144 	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
145 		 "allocating %u buffers\n", count);
146 
147 	for (i = 0; i < count; i++) {
148 
149 		buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
150 		if (!buf) {
151 			v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
152 			goto exit;
153 		}
154 		buf->dev = dev;
155 
156 		urb = usb_alloc_urb(0, GFP_KERNEL);
157 		if (!urb)
158 			goto exit_urb;
159 		buf->urb = urb;
160 
161 		mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
162 					 &urb->transfer_dma);
163 		if (!mem) {
164 			v4l2_err(&dev->v4l2_dev,
165 				 "cannot allocate usb transfer buffer\n");
166 			goto exit_urb_buffer;
167 		}
168 
169 		usb_fill_bulk_urb(buf->urb, dev->udev,
170 				  usb_rcvbulkpipe(dev->udev,
171 						  dev->bulk_in_endpointAddr),
172 				  mem, dev->bulk_in_size,
173 				  hdpvr_read_bulk_callback, buf);
174 
175 		buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
176 		buf->status = BUFSTAT_AVAILABLE;
177 		list_add_tail(&buf->buff_list, &dev->free_buff_list);
178 	}
179 	return 0;
180 exit_urb_buffer:
181 	usb_free_urb(urb);
182 exit_urb:
183 	kfree(buf);
184 exit:
185 	hdpvr_free_buffers(dev);
186 	return retval;
187 }
188 
189 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
190 {
191 	struct hdpvr_buffer *buf;
192 	struct urb *urb;
193 	int ret = 0, err_count = 0;
194 
195 	mutex_lock(&dev->io_mutex);
196 
197 	while (dev->status == STATUS_STREAMING &&
198 	       !list_empty(&dev->free_buff_list)) {
199 
200 		buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
201 				 buff_list);
202 		if (buf->status != BUFSTAT_AVAILABLE) {
203 			v4l2_err(&dev->v4l2_dev,
204 				 "buffer not marked as available\n");
205 			ret = -EFAULT;
206 			goto err;
207 		}
208 
209 		urb = buf->urb;
210 		urb->status = 0;
211 		urb->actual_length = 0;
212 		ret = usb_submit_urb(urb, GFP_KERNEL);
213 		if (ret) {
214 			v4l2_err(&dev->v4l2_dev,
215 				 "usb_submit_urb in %s returned %d\n",
216 				 __func__, ret);
217 			if (++err_count > 2)
218 				break;
219 			continue;
220 		}
221 		buf->status = BUFSTAT_INPROGRESS;
222 		list_move_tail(&buf->buff_list, &dev->rec_buff_list);
223 	}
224 err:
225 	print_buffer_status();
226 	mutex_unlock(&dev->io_mutex);
227 	return ret;
228 }
229 
230 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
231 {
232 	struct hdpvr_buffer *buf;
233 
234 	mutex_lock(&dev->io_mutex);
235 
236 	if (list_empty(&dev->rec_buff_list)) {
237 		mutex_unlock(&dev->io_mutex);
238 		return NULL;
239 	}
240 
241 	buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
242 			 buff_list);
243 	mutex_unlock(&dev->io_mutex);
244 
245 	return buf;
246 }
247 
248 static void hdpvr_transmit_buffers(struct work_struct *work)
249 {
250 	struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
251 						worker);
252 
253 	while (dev->status == STATUS_STREAMING) {
254 
255 		if (hdpvr_submit_buffers(dev)) {
256 			v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
257 			goto error;
258 		}
259 		if (wait_event_interruptible(dev->wait_buffer,
260 				!list_empty(&dev->free_buff_list) ||
261 					     dev->status != STATUS_STREAMING))
262 			goto error;
263 	}
264 
265 	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
266 		 "transmit worker exited\n");
267 	return;
268 error:
269 	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
270 		 "transmit buffers errored\n");
271 	dev->status = STATUS_ERROR;
272 }
273 
274 /* function expects dev->io_mutex to be hold by caller */
275 static int hdpvr_start_streaming(struct hdpvr_device *dev)
276 {
277 	int ret;
278 	struct hdpvr_video_info vidinf;
279 
280 	if (dev->status == STATUS_STREAMING)
281 		return 0;
282 	if (dev->status != STATUS_IDLE)
283 		return -EAGAIN;
284 
285 	ret = get_video_info(dev, &vidinf);
286 	if (ret < 0)
287 		return ret;
288 
289 	if (!vidinf.valid) {
290 		msleep(250);
291 		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
292 				"no video signal at input %d\n", dev->options.video_input);
293 		return -EAGAIN;
294 	}
295 
296 	v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
297 			"video signal: %dx%d@%dhz\n", vidinf.width,
298 			vidinf.height, vidinf.fps);
299 
300 	/* start streaming 2 request */
301 	ret = usb_control_msg(dev->udev,
302 			usb_sndctrlpipe(dev->udev, 0),
303 			0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
304 	v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
305 			"encoder start control request returned %d\n", ret);
306 	if (ret < 0)
307 		return ret;
308 
309 	ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
310 	if (ret)
311 		return ret;
312 
313 	dev->status = STATUS_STREAMING;
314 
315 	INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
316 	schedule_work(&dev->worker);
317 
318 	v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
319 			"streaming started\n");
320 
321 	return 0;
322 }
323 
324 
325 /* function expects dev->io_mutex to be hold by caller */
326 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
327 {
328 	int actual_length;
329 	uint c = 0;
330 	u8 *buf;
331 
332 	if (dev->status == STATUS_IDLE)
333 		return 0;
334 	else if (dev->status != STATUS_STREAMING)
335 		return -EAGAIN;
336 
337 	buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
338 	if (!buf)
339 		v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n");
340 
341 	dev->status = STATUS_SHUTTING_DOWN;
342 	hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
343 	mutex_unlock(&dev->io_mutex);
344 
345 	wake_up_interruptible(&dev->wait_buffer);
346 	msleep(50);
347 
348 	flush_work(&dev->worker);
349 
350 	mutex_lock(&dev->io_mutex);
351 	/* kill the still outstanding urbs */
352 	hdpvr_cancel_queue(dev);
353 
354 	/* emptying the device buffer beforeshutting it down */
355 	while (buf && ++c < 500 &&
356 	       !usb_bulk_msg(dev->udev,
357 			     usb_rcvbulkpipe(dev->udev,
358 					     dev->bulk_in_endpointAddr),
359 			     buf, dev->bulk_in_size, &actual_length,
360 			     BULK_URB_TIMEOUT)) {
361 		v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
362 			 "%2d: got %d bytes\n", c, actual_length);
363 	}
364 	kfree(buf);
365 	v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
366 		 "used %d urbs to empty device buffers\n", c-1);
367 	msleep(10);
368 
369 	dev->status = STATUS_IDLE;
370 
371 	return 0;
372 }
373 
374 
375 /*=======================================================================*/
376 /*
377  * video 4 linux 2 file operations
378  */
379 
380 static int hdpvr_open(struct file *file)
381 {
382 	struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
383 
384 	if (fh == NULL)
385 		return -ENOMEM;
386 	fh->legacy_mode = true;
387 	v4l2_fh_init(&fh->fh, video_devdata(file));
388 	v4l2_fh_add(&fh->fh);
389 	file->private_data = fh;
390 	return 0;
391 }
392 
393 static int hdpvr_release(struct file *file)
394 {
395 	struct hdpvr_device *dev = video_drvdata(file);
396 
397 	mutex_lock(&dev->io_mutex);
398 	if (file->private_data == dev->owner) {
399 		hdpvr_stop_streaming(dev);
400 		dev->owner = NULL;
401 	}
402 	mutex_unlock(&dev->io_mutex);
403 
404 	return v4l2_fh_release(file);
405 }
406 
407 /*
408  * hdpvr_v4l2_read()
409  * will allocate buffers when called for the first time
410  */
411 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
412 			  loff_t *pos)
413 {
414 	struct hdpvr_device *dev = video_drvdata(file);
415 	struct hdpvr_buffer *buf = NULL;
416 	struct urb *urb;
417 	unsigned int ret = 0;
418 	int rem, cnt;
419 
420 	if (*pos)
421 		return -ESPIPE;
422 
423 	mutex_lock(&dev->io_mutex);
424 	if (dev->status == STATUS_IDLE) {
425 		if (hdpvr_start_streaming(dev)) {
426 			v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
427 				 "start_streaming failed\n");
428 			ret = -EIO;
429 			msleep(200);
430 			dev->status = STATUS_IDLE;
431 			mutex_unlock(&dev->io_mutex);
432 			goto err;
433 		}
434 		dev->owner = file->private_data;
435 		print_buffer_status();
436 	}
437 	mutex_unlock(&dev->io_mutex);
438 
439 	/* wait for the first buffer */
440 	if (!(file->f_flags & O_NONBLOCK)) {
441 		if (wait_event_interruptible(dev->wait_data,
442 					     hdpvr_get_next_buffer(dev)))
443 			return -ERESTARTSYS;
444 	}
445 
446 	buf = hdpvr_get_next_buffer(dev);
447 
448 	while (count > 0 && buf) {
449 
450 		if (buf->status != BUFSTAT_READY &&
451 		    dev->status != STATUS_DISCONNECTED) {
452 			int err;
453 			/* return nonblocking */
454 			if (file->f_flags & O_NONBLOCK) {
455 				if (!ret)
456 					ret = -EAGAIN;
457 				goto err;
458 			}
459 
460 			err = wait_event_interruptible_timeout(dev->wait_data,
461 				buf->status == BUFSTAT_READY,
462 				msecs_to_jiffies(1000));
463 			if (err < 0) {
464 				ret = err;
465 				goto err;
466 			}
467 			if (!err) {
468 				v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
469 					"timeout: restart streaming\n");
470 				hdpvr_stop_streaming(dev);
471 				msecs_to_jiffies(4000);
472 				err = hdpvr_start_streaming(dev);
473 				if (err) {
474 					ret = err;
475 					goto err;
476 				}
477 			}
478 		}
479 
480 		if (buf->status != BUFSTAT_READY)
481 			break;
482 
483 		/* set remaining bytes to copy */
484 		urb = buf->urb;
485 		rem = urb->actual_length - buf->pos;
486 		cnt = rem > count ? count : rem;
487 
488 		if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
489 				 cnt)) {
490 			v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
491 			if (!ret)
492 				ret = -EFAULT;
493 			goto err;
494 		}
495 
496 		buf->pos += cnt;
497 		count -= cnt;
498 		buffer += cnt;
499 		ret += cnt;
500 
501 		/* finished, take next buffer */
502 		if (buf->pos == urb->actual_length) {
503 			mutex_lock(&dev->io_mutex);
504 			buf->pos = 0;
505 			buf->status = BUFSTAT_AVAILABLE;
506 
507 			list_move_tail(&buf->buff_list, &dev->free_buff_list);
508 
509 			print_buffer_status();
510 
511 			mutex_unlock(&dev->io_mutex);
512 
513 			wake_up_interruptible(&dev->wait_buffer);
514 
515 			buf = hdpvr_get_next_buffer(dev);
516 		}
517 	}
518 err:
519 	if (!ret && !buf)
520 		ret = -EAGAIN;
521 	return ret;
522 }
523 
524 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait)
525 {
526 	__poll_t req_events = poll_requested_events(wait);
527 	struct hdpvr_buffer *buf = NULL;
528 	struct hdpvr_device *dev = video_drvdata(filp);
529 	__poll_t mask = v4l2_ctrl_poll(filp, wait);
530 
531 	if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
532 		return mask;
533 
534 	mutex_lock(&dev->io_mutex);
535 
536 	if (dev->status == STATUS_IDLE) {
537 		if (hdpvr_start_streaming(dev)) {
538 			v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
539 				 "start_streaming failed\n");
540 			dev->status = STATUS_IDLE;
541 		} else {
542 			dev->owner = filp->private_data;
543 		}
544 
545 		print_buffer_status();
546 	}
547 	mutex_unlock(&dev->io_mutex);
548 
549 	buf = hdpvr_get_next_buffer(dev);
550 	/* only wait if no data is available */
551 	if (!buf || buf->status != BUFSTAT_READY) {
552 		poll_wait(filp, &dev->wait_data, wait);
553 		buf = hdpvr_get_next_buffer(dev);
554 	}
555 	if (buf && buf->status == BUFSTAT_READY)
556 		mask |= EPOLLIN | EPOLLRDNORM;
557 
558 	return mask;
559 }
560 
561 
562 static const struct v4l2_file_operations hdpvr_fops = {
563 	.owner		= THIS_MODULE,
564 	.open		= hdpvr_open,
565 	.release	= hdpvr_release,
566 	.read		= hdpvr_read,
567 	.poll		= hdpvr_poll,
568 	.unlocked_ioctl	= video_ioctl2,
569 };
570 
571 /*=======================================================================*/
572 /*
573  * V4L2 ioctl handling
574  */
575 
576 static int vidioc_querycap(struct file *file, void  *priv,
577 			   struct v4l2_capability *cap)
578 {
579 	struct hdpvr_device *dev = video_drvdata(file);
580 
581 	strscpy(cap->driver, "hdpvr", sizeof(cap->driver));
582 	strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card));
583 	usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
584 	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
585 			    V4L2_CAP_READWRITE;
586 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
587 	return 0;
588 }
589 
590 static int vidioc_s_std(struct file *file, void *_fh,
591 			v4l2_std_id std)
592 {
593 	struct hdpvr_device *dev = video_drvdata(file);
594 	struct hdpvr_fh *fh = _fh;
595 	u8 std_type = 1;
596 
597 	if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
598 		return -ENODATA;
599 	if (dev->status != STATUS_IDLE)
600 		return -EBUSY;
601 	if (std & V4L2_STD_525_60)
602 		std_type = 0;
603 	dev->cur_std = std;
604 	dev->width = 720;
605 	dev->height = std_type ? 576 : 480;
606 
607 	return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
608 }
609 
610 static int vidioc_g_std(struct file *file, void *_fh,
611 			v4l2_std_id *std)
612 {
613 	struct hdpvr_device *dev = video_drvdata(file);
614 	struct hdpvr_fh *fh = _fh;
615 
616 	if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
617 		return -ENODATA;
618 	*std = dev->cur_std;
619 	return 0;
620 }
621 
622 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
623 {
624 	struct hdpvr_device *dev = video_drvdata(file);
625 	struct hdpvr_video_info vid_info;
626 	struct hdpvr_fh *fh = _fh;
627 	int ret;
628 
629 	*a = V4L2_STD_UNKNOWN;
630 	if (dev->options.video_input == HDPVR_COMPONENT)
631 		return fh->legacy_mode ? 0 : -ENODATA;
632 	ret = get_video_info(dev, &vid_info);
633 	if (vid_info.valid && vid_info.width == 720 &&
634 	    (vid_info.height == 480 || vid_info.height == 576)) {
635 		*a = (vid_info.height == 480) ?
636 			V4L2_STD_525_60 : V4L2_STD_625_50;
637 	}
638 	return ret;
639 }
640 
641 static int vidioc_s_dv_timings(struct file *file, void *_fh,
642 				    struct v4l2_dv_timings *timings)
643 {
644 	struct hdpvr_device *dev = video_drvdata(file);
645 	struct hdpvr_fh *fh = _fh;
646 	int i;
647 
648 	fh->legacy_mode = false;
649 	if (dev->options.video_input)
650 		return -ENODATA;
651 	if (dev->status != STATUS_IDLE)
652 		return -EBUSY;
653 	for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
654 		if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
655 			break;
656 	if (i == ARRAY_SIZE(hdpvr_dv_timings))
657 		return -EINVAL;
658 	dev->cur_dv_timings = hdpvr_dv_timings[i];
659 	dev->width = hdpvr_dv_timings[i].bt.width;
660 	dev->height = hdpvr_dv_timings[i].bt.height;
661 	return 0;
662 }
663 
664 static int vidioc_g_dv_timings(struct file *file, void *_fh,
665 				    struct v4l2_dv_timings *timings)
666 {
667 	struct hdpvr_device *dev = video_drvdata(file);
668 	struct hdpvr_fh *fh = _fh;
669 
670 	fh->legacy_mode = false;
671 	if (dev->options.video_input)
672 		return -ENODATA;
673 	*timings = dev->cur_dv_timings;
674 	return 0;
675 }
676 
677 static int vidioc_query_dv_timings(struct file *file, void *_fh,
678 				    struct v4l2_dv_timings *timings)
679 {
680 	struct hdpvr_device *dev = video_drvdata(file);
681 	struct hdpvr_fh *fh = _fh;
682 	struct hdpvr_video_info vid_info;
683 	bool interlaced;
684 	int ret = 0;
685 	int i;
686 
687 	fh->legacy_mode = false;
688 	if (dev->options.video_input)
689 		return -ENODATA;
690 	ret = get_video_info(dev, &vid_info);
691 	if (ret)
692 		return ret;
693 	if (!vid_info.valid)
694 		return -ENOLCK;
695 	interlaced = vid_info.fps <= 30;
696 	for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
697 		const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
698 		unsigned hsize;
699 		unsigned vsize;
700 		unsigned fps;
701 
702 		hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
703 		vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
704 		fps = (unsigned)bt->pixelclock / (hsize * vsize);
705 		if (bt->width != vid_info.width ||
706 		    bt->height != vid_info.height ||
707 		    bt->interlaced != interlaced ||
708 		    (fps != vid_info.fps && fps + 1 != vid_info.fps))
709 			continue;
710 		*timings = hdpvr_dv_timings[i];
711 		break;
712 	}
713 	if (i == ARRAY_SIZE(hdpvr_dv_timings))
714 		ret = -ERANGE;
715 
716 	return ret;
717 }
718 
719 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
720 				    struct v4l2_enum_dv_timings *timings)
721 {
722 	struct hdpvr_device *dev = video_drvdata(file);
723 	struct hdpvr_fh *fh = _fh;
724 
725 	fh->legacy_mode = false;
726 	memset(timings->reserved, 0, sizeof(timings->reserved));
727 	if (dev->options.video_input)
728 		return -ENODATA;
729 	if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
730 		return -EINVAL;
731 	timings->timings = hdpvr_dv_timings[timings->index];
732 	return 0;
733 }
734 
735 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
736 				    struct v4l2_dv_timings_cap *cap)
737 {
738 	struct hdpvr_device *dev = video_drvdata(file);
739 	struct hdpvr_fh *fh = _fh;
740 
741 	fh->legacy_mode = false;
742 	if (dev->options.video_input)
743 		return -ENODATA;
744 	cap->type = V4L2_DV_BT_656_1120;
745 	cap->bt.min_width = 720;
746 	cap->bt.max_width = 1920;
747 	cap->bt.min_height = 480;
748 	cap->bt.max_height = 1080;
749 	cap->bt.min_pixelclock = 27000000;
750 	cap->bt.max_pixelclock = 74250000;
751 	cap->bt.standards = V4L2_DV_BT_STD_CEA861;
752 	cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
753 	return 0;
754 }
755 
756 static const char *iname[] = {
757 	[HDPVR_COMPONENT] = "Component",
758 	[HDPVR_SVIDEO]    = "S-Video",
759 	[HDPVR_COMPOSITE] = "Composite",
760 };
761 
762 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
763 {
764 	unsigned int n;
765 
766 	n = i->index;
767 	if (n >= HDPVR_VIDEO_INPUTS)
768 		return -EINVAL;
769 
770 	i->type = V4L2_INPUT_TYPE_CAMERA;
771 
772 	strncpy(i->name, iname[n], sizeof(i->name) - 1);
773 	i->name[sizeof(i->name) - 1] = '\0';
774 
775 	i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
776 
777 	i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
778 	i->std = n ? V4L2_STD_ALL : 0;
779 
780 	return 0;
781 }
782 
783 static int vidioc_s_input(struct file *file, void *_fh,
784 			  unsigned int index)
785 {
786 	struct hdpvr_device *dev = video_drvdata(file);
787 	int retval;
788 
789 	if (index >= HDPVR_VIDEO_INPUTS)
790 		return -EINVAL;
791 
792 	if (dev->status != STATUS_IDLE)
793 		return -EBUSY;
794 
795 	retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
796 	if (!retval) {
797 		dev->options.video_input = index;
798 		/*
799 		 * Unfortunately gstreamer calls ENUMSTD and bails out if it
800 		 * won't find any formats, even though component input is
801 		 * selected. This means that we have to leave tvnorms at
802 		 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
803 		 * tvnorms is set at the device node level and not at the
804 		 * filehandle level.
805 		 *
806 		 * Comment this out for now, but if the legacy mode can be
807 		 * removed in the future, then this code should be enabled
808 		 * again.
809 		dev->video_dev.tvnorms =
810 			(index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
811 		 */
812 	}
813 
814 	return retval;
815 }
816 
817 static int vidioc_g_input(struct file *file, void *private_data,
818 			  unsigned int *index)
819 {
820 	struct hdpvr_device *dev = video_drvdata(file);
821 
822 	*index = dev->options.video_input;
823 	return 0;
824 }
825 
826 
827 static const char *audio_iname[] = {
828 	[HDPVR_RCA_FRONT] = "RCA front",
829 	[HDPVR_RCA_BACK]  = "RCA back",
830 	[HDPVR_SPDIF]     = "SPDIF",
831 };
832 
833 static int vidioc_enumaudio(struct file *file, void *priv,
834 				struct v4l2_audio *audio)
835 {
836 	unsigned int n;
837 
838 	n = audio->index;
839 	if (n >= HDPVR_AUDIO_INPUTS)
840 		return -EINVAL;
841 
842 	audio->capability = V4L2_AUDCAP_STEREO;
843 
844 	strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
845 	audio->name[sizeof(audio->name) - 1] = '\0';
846 
847 	return 0;
848 }
849 
850 static int vidioc_s_audio(struct file *file, void *private_data,
851 			  const struct v4l2_audio *audio)
852 {
853 	struct hdpvr_device *dev = video_drvdata(file);
854 	int retval;
855 
856 	if (audio->index >= HDPVR_AUDIO_INPUTS)
857 		return -EINVAL;
858 
859 	if (dev->status != STATUS_IDLE)
860 		return -EBUSY;
861 
862 	retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
863 	if (!retval)
864 		dev->options.audio_input = audio->index;
865 
866 	return retval;
867 }
868 
869 static int vidioc_g_audio(struct file *file, void *private_data,
870 			  struct v4l2_audio *audio)
871 {
872 	struct hdpvr_device *dev = video_drvdata(file);
873 
874 	audio->index = dev->options.audio_input;
875 	audio->capability = V4L2_AUDCAP_STEREO;
876 	strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
877 	audio->name[sizeof(audio->name) - 1] = '\0';
878 	return 0;
879 }
880 
881 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
882 {
883 	struct hdpvr_device *dev =
884 		container_of(ctrl->handler, struct hdpvr_device, hdl);
885 
886 	switch (ctrl->id) {
887 	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
888 		if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
889 		    dev->video_bitrate->val >= dev->video_bitrate_peak->val)
890 			dev->video_bitrate_peak->val =
891 					dev->video_bitrate->val + 100000;
892 		break;
893 	}
894 	return 0;
895 }
896 
897 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
898 {
899 	struct hdpvr_device *dev =
900 		container_of(ctrl->handler, struct hdpvr_device, hdl);
901 	struct hdpvr_options *opt = &dev->options;
902 	int ret = -EINVAL;
903 
904 	switch (ctrl->id) {
905 	case V4L2_CID_BRIGHTNESS:
906 		ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
907 		if (ret)
908 			break;
909 		dev->options.brightness = ctrl->val;
910 		return 0;
911 	case V4L2_CID_CONTRAST:
912 		ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
913 		if (ret)
914 			break;
915 		dev->options.contrast = ctrl->val;
916 		return 0;
917 	case V4L2_CID_SATURATION:
918 		ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
919 		if (ret)
920 			break;
921 		dev->options.saturation = ctrl->val;
922 		return 0;
923 	case V4L2_CID_HUE:
924 		ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
925 		if (ret)
926 			break;
927 		dev->options.hue = ctrl->val;
928 		return 0;
929 	case V4L2_CID_SHARPNESS:
930 		ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
931 		if (ret)
932 			break;
933 		dev->options.sharpness = ctrl->val;
934 		return 0;
935 	case V4L2_CID_MPEG_AUDIO_ENCODING:
936 		if (dev->flags & HDPVR_FLAG_AC3_CAP) {
937 			opt->audio_codec = ctrl->val;
938 			return hdpvr_set_audio(dev, opt->audio_input + 1,
939 					      opt->audio_codec);
940 		}
941 		return 0;
942 	case V4L2_CID_MPEG_VIDEO_ENCODING:
943 		return 0;
944 /*	case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
945 /*		if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
946 /*			opt->gop_mode |= 0x2; */
947 /*			hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
948 /*					  opt->gop_mode); */
949 /*		} */
950 /*		if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
951 /*			opt->gop_mode &= ~0x2; */
952 /*			hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
953 /*					  opt->gop_mode); */
954 /*		} */
955 /*		break; */
956 	case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
957 		uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
958 		uint bitrate = dev->video_bitrate->val / 100000;
959 
960 		if (ctrl->is_new) {
961 			if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
962 				opt->bitrate_mode = HDPVR_CONSTANT;
963 			else
964 				opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
965 			hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
966 					  opt->bitrate_mode);
967 			v4l2_ctrl_activate(dev->video_bitrate_peak,
968 				ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
969 		}
970 
971 		if (dev->video_bitrate_peak->is_new ||
972 		    dev->video_bitrate->is_new) {
973 			opt->bitrate = bitrate;
974 			opt->peak_bitrate = peak_bitrate;
975 			hdpvr_set_bitrate(dev);
976 		}
977 		return 0;
978 	}
979 	case V4L2_CID_MPEG_STREAM_TYPE:
980 		return 0;
981 	default:
982 		break;
983 	}
984 	return ret;
985 }
986 
987 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
988 				    struct v4l2_fmtdesc *f)
989 {
990 	if (f->index != 0)
991 		return -EINVAL;
992 
993 	f->flags = V4L2_FMT_FLAG_COMPRESSED;
994 	strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
995 	f->pixelformat = V4L2_PIX_FMT_MPEG;
996 
997 	return 0;
998 }
999 
1000 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
1001 				struct v4l2_format *f)
1002 {
1003 	struct hdpvr_device *dev = video_drvdata(file);
1004 	struct hdpvr_fh *fh = _fh;
1005 	int ret;
1006 
1007 	/*
1008 	 * The original driver would always returns the current detected
1009 	 * resolution as the format (and EFAULT if it couldn't be detected).
1010 	 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1011 	 * better way of doing this, but to stay compatible with existing
1012 	 * applications we assume legacy mode every time an application opens
1013 	 * the device. Only if one of the new DV_TIMINGS ioctls is called
1014 	 * will the filehandle go into 'normal' mode where g_fmt returns the
1015 	 * last set format.
1016 	 */
1017 	if (fh->legacy_mode) {
1018 		struct hdpvr_video_info vid_info;
1019 
1020 		ret = get_video_info(dev, &vid_info);
1021 		if (ret < 0)
1022 			return ret;
1023 		if (!vid_info.valid)
1024 			return -EFAULT;
1025 		f->fmt.pix.width = vid_info.width;
1026 		f->fmt.pix.height = vid_info.height;
1027 	} else {
1028 		f->fmt.pix.width = dev->width;
1029 		f->fmt.pix.height = dev->height;
1030 	}
1031 	f->fmt.pix.pixelformat	= V4L2_PIX_FMT_MPEG;
1032 	f->fmt.pix.sizeimage	= dev->bulk_in_size;
1033 	f->fmt.pix.bytesperline	= 0;
1034 	if (f->fmt.pix.width == 720) {
1035 		/* SDTV formats */
1036 		f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1037 		f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1038 	} else {
1039 		/* HDTV formats */
1040 		f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1041 		f->fmt.pix.field = V4L2_FIELD_NONE;
1042 	}
1043 	return 0;
1044 }
1045 
1046 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1047 			       struct v4l2_encoder_cmd *a)
1048 {
1049 	struct hdpvr_device *dev = video_drvdata(filp);
1050 	int res = 0;
1051 
1052 	mutex_lock(&dev->io_mutex);
1053 	a->flags = 0;
1054 
1055 	switch (a->cmd) {
1056 	case V4L2_ENC_CMD_START:
1057 		if (dev->owner && filp->private_data != dev->owner) {
1058 			res = -EBUSY;
1059 			break;
1060 		}
1061 		if (dev->status == STATUS_STREAMING)
1062 			break;
1063 		res = hdpvr_start_streaming(dev);
1064 		if (!res)
1065 			dev->owner = filp->private_data;
1066 		else
1067 			dev->status = STATUS_IDLE;
1068 		break;
1069 	case V4L2_ENC_CMD_STOP:
1070 		if (dev->owner && filp->private_data != dev->owner) {
1071 			res = -EBUSY;
1072 			break;
1073 		}
1074 		if (dev->status == STATUS_IDLE)
1075 			break;
1076 		res = hdpvr_stop_streaming(dev);
1077 		if (!res)
1078 			dev->owner = NULL;
1079 		break;
1080 	default:
1081 		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1082 			 "Unsupported encoder cmd %d\n", a->cmd);
1083 		res = -EINVAL;
1084 		break;
1085 	}
1086 
1087 	mutex_unlock(&dev->io_mutex);
1088 	return res;
1089 }
1090 
1091 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1092 					struct v4l2_encoder_cmd *a)
1093 {
1094 	a->flags = 0;
1095 	switch (a->cmd) {
1096 	case V4L2_ENC_CMD_START:
1097 	case V4L2_ENC_CMD_STOP:
1098 		return 0;
1099 	default:
1100 		return -EINVAL;
1101 	}
1102 }
1103 
1104 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1105 	.vidioc_querycap	= vidioc_querycap,
1106 	.vidioc_s_std		= vidioc_s_std,
1107 	.vidioc_g_std		= vidioc_g_std,
1108 	.vidioc_querystd	= vidioc_querystd,
1109 	.vidioc_s_dv_timings	= vidioc_s_dv_timings,
1110 	.vidioc_g_dv_timings	= vidioc_g_dv_timings,
1111 	.vidioc_query_dv_timings= vidioc_query_dv_timings,
1112 	.vidioc_enum_dv_timings	= vidioc_enum_dv_timings,
1113 	.vidioc_dv_timings_cap	= vidioc_dv_timings_cap,
1114 	.vidioc_enum_input	= vidioc_enum_input,
1115 	.vidioc_g_input		= vidioc_g_input,
1116 	.vidioc_s_input		= vidioc_s_input,
1117 	.vidioc_enumaudio	= vidioc_enumaudio,
1118 	.vidioc_g_audio		= vidioc_g_audio,
1119 	.vidioc_s_audio		= vidioc_s_audio,
1120 	.vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1121 	.vidioc_g_fmt_vid_cap	= vidioc_g_fmt_vid_cap,
1122 	.vidioc_s_fmt_vid_cap	= vidioc_g_fmt_vid_cap,
1123 	.vidioc_try_fmt_vid_cap	= vidioc_g_fmt_vid_cap,
1124 	.vidioc_encoder_cmd	= vidioc_encoder_cmd,
1125 	.vidioc_try_encoder_cmd	= vidioc_try_encoder_cmd,
1126 	.vidioc_log_status	= v4l2_ctrl_log_status,
1127 	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1128 	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1129 };
1130 
1131 static void hdpvr_device_release(struct video_device *vdev)
1132 {
1133 	struct hdpvr_device *dev = video_get_drvdata(vdev);
1134 
1135 	hdpvr_delete(dev);
1136 	mutex_lock(&dev->io_mutex);
1137 	flush_work(&dev->worker);
1138 	mutex_unlock(&dev->io_mutex);
1139 
1140 	v4l2_device_unregister(&dev->v4l2_dev);
1141 	v4l2_ctrl_handler_free(&dev->hdl);
1142 
1143 	/* deregister I2C adapter */
1144 #if IS_ENABLED(CONFIG_I2C)
1145 	mutex_lock(&dev->i2c_mutex);
1146 	i2c_del_adapter(&dev->i2c_adapter);
1147 	mutex_unlock(&dev->i2c_mutex);
1148 #endif /* CONFIG_I2C */
1149 
1150 	kfree(dev->usbc_buf);
1151 	kfree(dev);
1152 }
1153 
1154 static const struct video_device hdpvr_video_template = {
1155 	.fops			= &hdpvr_fops,
1156 	.release		= hdpvr_device_release,
1157 	.ioctl_ops		= &hdpvr_ioctl_ops,
1158 	.tvnorms		= V4L2_STD_ALL,
1159 };
1160 
1161 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1162 	.try_ctrl = hdpvr_try_ctrl,
1163 	.s_ctrl = hdpvr_s_ctrl,
1164 };
1165 
1166 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1167 			    int devnum)
1168 {
1169 	struct v4l2_ctrl_handler *hdl = &dev->hdl;
1170 	bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1171 	int res;
1172 
1173 	dev->cur_std = V4L2_STD_525_60;
1174 	dev->width = 720;
1175 	dev->height = 480;
1176 	dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1177 	v4l2_ctrl_handler_init(hdl, 11);
1178 	if (dev->fw_ver > 0x15) {
1179 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1180 			V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1181 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1182 			V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1183 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1184 			V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1185 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1186 			V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1187 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188 			V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1189 	} else {
1190 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1191 			V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1192 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1193 			V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1194 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1195 			V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1196 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1197 			V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1198 		v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1199 			V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1200 	}
1201 
1202 	v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1203 		V4L2_CID_MPEG_STREAM_TYPE,
1204 		V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1205 		0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1206 	v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1207 		V4L2_CID_MPEG_AUDIO_ENCODING,
1208 		ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1209 		0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1210 	v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1211 		V4L2_CID_MPEG_VIDEO_ENCODING,
1212 		V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1213 		V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1214 
1215 	dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1216 		V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1217 		V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1218 		V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1219 
1220 	dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1221 		V4L2_CID_MPEG_VIDEO_BITRATE,
1222 		1000000, 13500000, 100000, 6500000);
1223 	dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1224 		V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1225 		1100000, 20200000, 100000, 9000000);
1226 	dev->v4l2_dev.ctrl_handler = hdl;
1227 	if (hdl->error) {
1228 		res = hdl->error;
1229 		v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1230 		goto error;
1231 	}
1232 	v4l2_ctrl_cluster(3, &dev->video_mode);
1233 	res = v4l2_ctrl_handler_setup(hdl);
1234 	if (res < 0) {
1235 		v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1236 		goto error;
1237 	}
1238 
1239 	/* setup and register video device */
1240 	dev->video_dev = hdpvr_video_template;
1241 	strscpy(dev->video_dev.name, "Hauppauge HD PVR",
1242 		sizeof(dev->video_dev.name));
1243 	dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1244 	video_set_drvdata(&dev->video_dev, dev);
1245 
1246 	res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum);
1247 	if (res < 0) {
1248 		v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1249 		goto error;
1250 	}
1251 
1252 	return 0;
1253 error:
1254 	v4l2_ctrl_handler_free(hdl);
1255 	return res;
1256 }
1257