1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Hauppauge HD PVR USB driver - video 4 linux 2 interface
4 *
5 * Copyright (C) 2008 Janne Grunau (j@jannau.net)
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/errno.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/module.h>
13 #include <linux/uaccess.h>
14 #include <linux/usb.h>
15 #include <linux/mutex.h>
16 #include <linux/workqueue.h>
17
18 #include <linux/videodev2.h>
19 #include <linux/v4l2-dv-timings.h>
20 #include <media/v4l2-dev.h>
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-dv-timings.h>
23 #include <media/v4l2-ioctl.h>
24 #include <media/v4l2-event.h>
25 #include "hdpvr.h"
26
27 #define BULK_URB_TIMEOUT 90 /* 0.09 seconds */
28
29 #define print_buffer_status() { \
30 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
31 "%s:%d buffer stat: %d free, %d proc\n", \
32 __func__, __LINE__, \
33 list_size(&dev->free_buff_list), \
34 list_size(&dev->rec_buff_list)); }
35
36 static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
37 V4L2_DV_BT_CEA_720X480I59_94,
38 V4L2_DV_BT_CEA_720X576I50,
39 V4L2_DV_BT_CEA_720X480P59_94,
40 V4L2_DV_BT_CEA_720X576P50,
41 V4L2_DV_BT_CEA_1280X720P50,
42 V4L2_DV_BT_CEA_1280X720P60,
43 V4L2_DV_BT_CEA_1920X1080I50,
44 V4L2_DV_BT_CEA_1920X1080I60,
45 };
46
47 /* Use 480i59 as the default timings */
48 #define HDPVR_DEF_DV_TIMINGS_IDX (0)
49
50 struct hdpvr_fh {
51 struct v4l2_fh fh;
52 bool legacy_mode;
53 };
54
file_to_hdpvr_fh(struct file * file)55 static inline struct hdpvr_fh *file_to_hdpvr_fh(struct file *file)
56 {
57 return container_of(file_to_v4l2_fh(file), struct hdpvr_fh, fh);
58 }
59
list_size(struct list_head * list)60 static uint list_size(struct list_head *list)
61 {
62 struct list_head *tmp;
63 uint count = 0;
64
65 list_for_each(tmp, list) {
66 count++;
67 }
68
69 return count;
70 }
71
72 /*=========================================================================*/
73 /* urb callback */
hdpvr_read_bulk_callback(struct urb * urb)74 static void hdpvr_read_bulk_callback(struct urb *urb)
75 {
76 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
77 struct hdpvr_device *dev = buf->dev;
78
79 /* marking buffer as received and wake waiting */
80 buf->status = BUFSTAT_READY;
81 wake_up_interruptible(&dev->wait_data);
82 }
83
84 /*=========================================================================*/
85 /* buffer bits */
86
87 /* function expects dev->io_mutex to be hold by caller */
hdpvr_cancel_queue(struct hdpvr_device * dev)88 int hdpvr_cancel_queue(struct hdpvr_device *dev)
89 {
90 struct hdpvr_buffer *buf;
91
92 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
93 usb_kill_urb(buf->urb);
94 buf->status = BUFSTAT_AVAILABLE;
95 }
96
97 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
98
99 return 0;
100 }
101
hdpvr_free_queue(struct list_head * q)102 static int hdpvr_free_queue(struct list_head *q)
103 {
104 struct list_head *tmp;
105 struct list_head *p;
106 struct hdpvr_buffer *buf;
107 struct urb *urb;
108
109 for (p = q->next; p != q;) {
110 buf = list_entry(p, struct hdpvr_buffer, buff_list);
111
112 urb = buf->urb;
113 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
114 urb->transfer_buffer, urb->transfer_dma);
115 usb_free_urb(urb);
116 tmp = p->next;
117 list_del(p);
118 kfree(buf);
119 p = tmp;
120 }
121
122 return 0;
123 }
124
125 /* function expects dev->io_mutex to be hold by caller */
hdpvr_free_buffers(struct hdpvr_device * dev)126 int hdpvr_free_buffers(struct hdpvr_device *dev)
127 {
128 hdpvr_cancel_queue(dev);
129
130 hdpvr_free_queue(&dev->free_buff_list);
131 hdpvr_free_queue(&dev->rec_buff_list);
132
133 return 0;
134 }
135
136 /* function expects dev->io_mutex to be hold by caller */
hdpvr_alloc_buffers(struct hdpvr_device * dev,uint count)137 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
138 {
139 uint i;
140 int retval = -ENOMEM;
141 u8 *mem;
142 struct hdpvr_buffer *buf;
143 struct urb *urb;
144
145 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
146 "allocating %u buffers\n", count);
147
148 for (i = 0; i < count; i++) {
149
150 buf = kzalloc_obj(struct hdpvr_buffer);
151 if (!buf) {
152 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
153 goto exit;
154 }
155 buf->dev = dev;
156
157 urb = usb_alloc_urb(0, GFP_KERNEL);
158 if (!urb)
159 goto exit_urb;
160 buf->urb = urb;
161
162 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
163 &urb->transfer_dma);
164 if (!mem) {
165 v4l2_err(&dev->v4l2_dev,
166 "cannot allocate usb transfer buffer\n");
167 goto exit_urb_buffer;
168 }
169
170 usb_fill_bulk_urb(buf->urb, dev->udev,
171 usb_rcvbulkpipe(dev->udev,
172 dev->bulk_in_endpointAddr),
173 mem, dev->bulk_in_size,
174 hdpvr_read_bulk_callback, buf);
175
176 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
177 buf->status = BUFSTAT_AVAILABLE;
178 list_add_tail(&buf->buff_list, &dev->free_buff_list);
179 }
180 return 0;
181 exit_urb_buffer:
182 usb_free_urb(urb);
183 exit_urb:
184 kfree(buf);
185 exit:
186 hdpvr_free_buffers(dev);
187 return retval;
188 }
189
hdpvr_submit_buffers(struct hdpvr_device * dev)190 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
191 {
192 struct hdpvr_buffer *buf;
193 struct urb *urb;
194 int ret = 0, err_count = 0;
195
196 mutex_lock(&dev->io_mutex);
197
198 while (dev->status == STATUS_STREAMING &&
199 !list_empty(&dev->free_buff_list)) {
200
201 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
202 buff_list);
203 if (buf->status != BUFSTAT_AVAILABLE) {
204 v4l2_err(&dev->v4l2_dev,
205 "buffer not marked as available\n");
206 ret = -EFAULT;
207 goto err;
208 }
209
210 urb = buf->urb;
211 urb->status = 0;
212 urb->actual_length = 0;
213 ret = usb_submit_urb(urb, GFP_KERNEL);
214 if (ret) {
215 v4l2_err(&dev->v4l2_dev,
216 "usb_submit_urb in %s returned %d\n",
217 __func__, ret);
218 if (++err_count > 2)
219 break;
220 continue;
221 }
222 buf->status = BUFSTAT_INPROGRESS;
223 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
224 }
225 err:
226 print_buffer_status();
227 mutex_unlock(&dev->io_mutex);
228 return ret;
229 }
230
hdpvr_get_next_buffer(struct hdpvr_device * dev)231 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
232 {
233 struct hdpvr_buffer *buf;
234
235 mutex_lock(&dev->io_mutex);
236
237 if (list_empty(&dev->rec_buff_list)) {
238 mutex_unlock(&dev->io_mutex);
239 return NULL;
240 }
241
242 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
243 buff_list);
244 mutex_unlock(&dev->io_mutex);
245
246 return buf;
247 }
248
hdpvr_transmit_buffers(struct work_struct * work)249 static void hdpvr_transmit_buffers(struct work_struct *work)
250 {
251 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
252 worker);
253
254 while (dev->status == STATUS_STREAMING) {
255
256 if (hdpvr_submit_buffers(dev)) {
257 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
258 goto error;
259 }
260 if (wait_event_interruptible(dev->wait_buffer,
261 !list_empty(&dev->free_buff_list) ||
262 dev->status != STATUS_STREAMING))
263 goto error;
264 }
265
266 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
267 "transmit worker exited\n");
268 return;
269 error:
270 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
271 "transmit buffers errored\n");
272 dev->status = STATUS_ERROR;
273 }
274
275 /* function expects dev->io_mutex to be hold by caller */
hdpvr_start_streaming(struct hdpvr_device * dev)276 static int hdpvr_start_streaming(struct hdpvr_device *dev)
277 {
278 int ret;
279 struct hdpvr_video_info vidinf;
280
281 if (dev->status == STATUS_STREAMING)
282 return 0;
283 if (dev->status != STATUS_IDLE)
284 return -EAGAIN;
285
286 ret = get_video_info(dev, &vidinf);
287 if (ret < 0)
288 return ret;
289
290 if (!vidinf.valid) {
291 msleep(250);
292 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
293 "no video signal at input %d\n", dev->options.video_input);
294 return -EAGAIN;
295 }
296
297 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
298 "video signal: %dx%d@%dhz\n", vidinf.width,
299 vidinf.height, vidinf.fps);
300
301 /* start streaming 2 request */
302 ret = usb_control_msg(dev->udev,
303 usb_sndctrlpipe(dev->udev, 0),
304 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
305 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
306 "encoder start control request returned %d\n", ret);
307 if (ret < 0)
308 return ret;
309
310 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
311 if (ret)
312 return ret;
313
314 dev->status = STATUS_STREAMING;
315
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 */
hdpvr_stop_streaming(struct hdpvr_device * dev)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
hdpvr_open(struct file * file)380 static int hdpvr_open(struct file *file)
381 {
382 struct hdpvr_fh *fh = kzalloc_obj(*fh);
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, file);
389 return 0;
390 }
391
hdpvr_release(struct file * file)392 static int hdpvr_release(struct file *file)
393 {
394 struct hdpvr_device *dev = video_drvdata(file);
395
396 mutex_lock(&dev->io_mutex);
397 if (file_to_v4l2_fh(file) == dev->owner) {
398 hdpvr_stop_streaming(dev);
399 dev->owner = NULL;
400 }
401 mutex_unlock(&dev->io_mutex);
402
403 return v4l2_fh_release(file);
404 }
405
406 /*
407 * hdpvr_v4l2_read()
408 * will allocate buffers when called for the first time
409 */
hdpvr_read(struct file * file,char __user * buffer,size_t count,loff_t * pos)410 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
411 loff_t *pos)
412 {
413 struct hdpvr_device *dev = video_drvdata(file);
414 struct hdpvr_buffer *buf = NULL;
415 struct urb *urb;
416 int ret = 0;
417 int rem, cnt;
418
419 if (*pos)
420 return -ESPIPE;
421
422 mutex_lock(&dev->io_mutex);
423 if (dev->status == STATUS_IDLE) {
424 if (hdpvr_start_streaming(dev)) {
425 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
426 "start_streaming failed\n");
427 ret = -EIO;
428 msleep(200);
429 dev->status = STATUS_IDLE;
430 mutex_unlock(&dev->io_mutex);
431 goto err;
432 }
433 dev->owner = file_to_v4l2_fh(file);
434 print_buffer_status();
435 }
436 mutex_unlock(&dev->io_mutex);
437
438 /* wait for the first buffer */
439 if (!(file->f_flags & O_NONBLOCK)) {
440 if (wait_event_interruptible(dev->wait_data,
441 !list_empty_careful(&dev->rec_buff_list)))
442 return -ERESTARTSYS;
443 }
444
445 buf = hdpvr_get_next_buffer(dev);
446
447 while (count > 0 && buf) {
448
449 if (buf->status != BUFSTAT_READY &&
450 dev->status != STATUS_DISCONNECTED) {
451 int err;
452 /* return nonblocking */
453 if (file->f_flags & O_NONBLOCK) {
454 if (!ret)
455 ret = -EAGAIN;
456 goto err;
457 }
458
459 err = wait_event_interruptible_timeout(dev->wait_data,
460 buf->status == BUFSTAT_READY,
461 msecs_to_jiffies(1000));
462 if (err < 0) {
463 ret = err;
464 goto err;
465 }
466 if (!err) {
467 v4l2_info(&dev->v4l2_dev,
468 "timeout: restart streaming\n");
469 mutex_lock(&dev->io_mutex);
470 hdpvr_stop_streaming(dev);
471 mutex_unlock(&dev->io_mutex);
472 /*
473 * The FW needs about 4 seconds after streaming
474 * stopped before it is ready to restart
475 * streaming.
476 */
477 msleep(4000);
478 err = hdpvr_start_streaming(dev);
479 if (err) {
480 ret = err;
481 goto err;
482 }
483 }
484 }
485
486 if (buf->status != BUFSTAT_READY)
487 break;
488
489 /* set remaining bytes to copy */
490 urb = buf->urb;
491 rem = urb->actual_length - buf->pos;
492 cnt = rem > count ? count : rem;
493
494 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
495 cnt)) {
496 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
497 if (!ret)
498 ret = -EFAULT;
499 goto err;
500 }
501
502 buf->pos += cnt;
503 count -= cnt;
504 buffer += cnt;
505 ret += cnt;
506
507 /* finished, take next buffer */
508 if (buf->pos == urb->actual_length) {
509 mutex_lock(&dev->io_mutex);
510 buf->pos = 0;
511 buf->status = BUFSTAT_AVAILABLE;
512
513 list_move_tail(&buf->buff_list, &dev->free_buff_list);
514
515 print_buffer_status();
516
517 mutex_unlock(&dev->io_mutex);
518
519 wake_up_interruptible(&dev->wait_buffer);
520
521 buf = hdpvr_get_next_buffer(dev);
522 }
523 }
524 err:
525 if (!ret && !buf)
526 ret = -EAGAIN;
527 return ret;
528 }
529
hdpvr_poll(struct file * filp,poll_table * wait)530 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait)
531 {
532 __poll_t req_events = poll_requested_events(wait);
533 struct hdpvr_buffer *buf = NULL;
534 struct hdpvr_device *dev = video_drvdata(filp);
535 __poll_t mask = v4l2_ctrl_poll(filp, wait);
536
537 if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
538 return mask;
539
540 mutex_lock(&dev->io_mutex);
541
542 if (dev->status == STATUS_IDLE) {
543 if (hdpvr_start_streaming(dev)) {
544 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
545 "start_streaming failed\n");
546 dev->status = STATUS_IDLE;
547 } else {
548 dev->owner = file_to_v4l2_fh(filp);
549 }
550
551 print_buffer_status();
552 }
553 mutex_unlock(&dev->io_mutex);
554
555 buf = hdpvr_get_next_buffer(dev);
556 /* only wait if no data is available */
557 if (!buf || buf->status != BUFSTAT_READY) {
558 poll_wait(filp, &dev->wait_data, wait);
559 buf = hdpvr_get_next_buffer(dev);
560 }
561 if (buf && buf->status == BUFSTAT_READY)
562 mask |= EPOLLIN | EPOLLRDNORM;
563
564 return mask;
565 }
566
567
568 static const struct v4l2_file_operations hdpvr_fops = {
569 .owner = THIS_MODULE,
570 .open = hdpvr_open,
571 .release = hdpvr_release,
572 .read = hdpvr_read,
573 .poll = hdpvr_poll,
574 .unlocked_ioctl = video_ioctl2,
575 };
576
577 /*=======================================================================*/
578 /*
579 * V4L2 ioctl handling
580 */
581
vidioc_querycap(struct file * file,void * priv,struct v4l2_capability * cap)582 static int vidioc_querycap(struct file *file, void *priv,
583 struct v4l2_capability *cap)
584 {
585 struct hdpvr_device *dev = video_drvdata(file);
586
587 strscpy(cap->driver, "hdpvr", sizeof(cap->driver));
588 strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card));
589 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
590 return 0;
591 }
592
vidioc_s_std(struct file * file,void * priv,v4l2_std_id std)593 static int vidioc_s_std(struct file *file, void *priv,
594 v4l2_std_id std)
595 {
596 struct hdpvr_device *dev = video_drvdata(file);
597 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
598 u8 std_type = 1;
599
600 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
601 return -ENODATA;
602 if (dev->status != STATUS_IDLE)
603 return -EBUSY;
604 if (std & V4L2_STD_525_60)
605 std_type = 0;
606 dev->cur_std = std;
607 dev->width = 720;
608 dev->height = std_type ? 576 : 480;
609
610 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
611 }
612
vidioc_g_std(struct file * file,void * priv,v4l2_std_id * std)613 static int vidioc_g_std(struct file *file, void *priv,
614 v4l2_std_id *std)
615 {
616 struct hdpvr_device *dev = video_drvdata(file);
617 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
618
619
620 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
621 return -ENODATA;
622 *std = dev->cur_std;
623 return 0;
624 }
625
vidioc_querystd(struct file * file,void * priv,v4l2_std_id * a)626 static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *a)
627 {
628 struct hdpvr_device *dev = video_drvdata(file);
629 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
630 struct hdpvr_video_info vid_info;
631 int ret;
632
633 *a = V4L2_STD_UNKNOWN;
634 if (dev->options.video_input == HDPVR_COMPONENT)
635 return fh->legacy_mode ? 0 : -ENODATA;
636 ret = get_video_info(dev, &vid_info);
637 if (vid_info.valid && vid_info.width == 720 &&
638 (vid_info.height == 480 || vid_info.height == 576)) {
639 *a = (vid_info.height == 480) ?
640 V4L2_STD_525_60 : V4L2_STD_625_50;
641 }
642 return ret;
643 }
644
vidioc_s_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)645 static int vidioc_s_dv_timings(struct file *file, void *priv,
646 struct v4l2_dv_timings *timings)
647 {
648 struct hdpvr_device *dev = video_drvdata(file);
649 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
650 int i;
651
652 fh->legacy_mode = false;
653 if (dev->options.video_input)
654 return -ENODATA;
655 if (dev->status != STATUS_IDLE)
656 return -EBUSY;
657 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
658 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
659 break;
660 if (i == ARRAY_SIZE(hdpvr_dv_timings))
661 return -EINVAL;
662 dev->cur_dv_timings = hdpvr_dv_timings[i];
663 dev->width = hdpvr_dv_timings[i].bt.width;
664 dev->height = hdpvr_dv_timings[i].bt.height;
665 return 0;
666 }
667
vidioc_g_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)668 static int vidioc_g_dv_timings(struct file *file, void *priv,
669 struct v4l2_dv_timings *timings)
670 {
671 struct hdpvr_device *dev = video_drvdata(file);
672 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
673
674 fh->legacy_mode = false;
675 if (dev->options.video_input)
676 return -ENODATA;
677 *timings = dev->cur_dv_timings;
678 return 0;
679 }
680
vidioc_query_dv_timings(struct file * file,void * priv,struct v4l2_dv_timings * timings)681 static int vidioc_query_dv_timings(struct file *file, void *priv,
682 struct v4l2_dv_timings *timings)
683 {
684 struct hdpvr_device *dev = video_drvdata(file);
685 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
686 struct hdpvr_video_info vid_info;
687 bool interlaced;
688 int ret = 0;
689 int i;
690
691 fh->legacy_mode = false;
692 if (dev->options.video_input)
693 return -ENODATA;
694 ret = get_video_info(dev, &vid_info);
695 if (ret)
696 return ret;
697 if (!vid_info.valid)
698 return -ENOLCK;
699 interlaced = vid_info.fps <= 30;
700 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
701 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
702 unsigned hsize;
703 unsigned vsize;
704 unsigned fps;
705
706 hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
707 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
708 fps = (unsigned)bt->pixelclock / (hsize * vsize);
709 if (bt->width != vid_info.width ||
710 bt->height != vid_info.height ||
711 bt->interlaced != interlaced ||
712 (fps != vid_info.fps && fps + 1 != vid_info.fps))
713 continue;
714 *timings = hdpvr_dv_timings[i];
715 break;
716 }
717 if (i == ARRAY_SIZE(hdpvr_dv_timings))
718 ret = -ERANGE;
719
720 return ret;
721 }
722
vidioc_enum_dv_timings(struct file * file,void * priv,struct v4l2_enum_dv_timings * timings)723 static int vidioc_enum_dv_timings(struct file *file, void *priv,
724 struct v4l2_enum_dv_timings *timings)
725 {
726 struct hdpvr_device *dev = video_drvdata(file);
727 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
728
729 fh->legacy_mode = false;
730 memset(timings->reserved, 0, sizeof(timings->reserved));
731 if (dev->options.video_input)
732 return -ENODATA;
733 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
734 return -EINVAL;
735 timings->timings = hdpvr_dv_timings[timings->index];
736 return 0;
737 }
738
vidioc_dv_timings_cap(struct file * file,void * priv,struct v4l2_dv_timings_cap * cap)739 static int vidioc_dv_timings_cap(struct file *file, void *priv,
740 struct v4l2_dv_timings_cap *cap)
741 {
742 struct hdpvr_device *dev = video_drvdata(file);
743 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
744
745 fh->legacy_mode = false;
746 if (dev->options.video_input)
747 return -ENODATA;
748 cap->type = V4L2_DV_BT_656_1120;
749 cap->bt.min_width = 720;
750 cap->bt.max_width = 1920;
751 cap->bt.min_height = 480;
752 cap->bt.max_height = 1080;
753 cap->bt.min_pixelclock = 27000000;
754 cap->bt.max_pixelclock = 74250000;
755 cap->bt.standards = V4L2_DV_BT_STD_CEA861;
756 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
757 return 0;
758 }
759
760 static const char *iname[] = {
761 [HDPVR_COMPONENT] = "Component",
762 [HDPVR_SVIDEO] = "S-Video",
763 [HDPVR_COMPOSITE] = "Composite",
764 };
765
vidioc_enum_input(struct file * file,void * priv,struct v4l2_input * i)766 static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i)
767 {
768 unsigned int n;
769
770 n = i->index;
771 if (n >= HDPVR_VIDEO_INPUTS)
772 return -EINVAL;
773
774 i->type = V4L2_INPUT_TYPE_CAMERA;
775
776 strscpy(i->name, iname[n], sizeof(i->name));
777
778 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
779
780 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
781 i->std = n ? V4L2_STD_ALL : 0;
782
783 return 0;
784 }
785
vidioc_s_input(struct file * file,void * priv,unsigned int index)786 static int vidioc_s_input(struct file *file, void *priv,
787 unsigned int index)
788 {
789 struct hdpvr_device *dev = video_drvdata(file);
790 int retval;
791
792 if (index >= HDPVR_VIDEO_INPUTS)
793 return -EINVAL;
794
795 if (dev->status != STATUS_IDLE)
796 return -EBUSY;
797
798 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
799 if (!retval) {
800 dev->options.video_input = index;
801 /*
802 * Unfortunately gstreamer calls ENUMSTD and bails out if it
803 * won't find any formats, even though component input is
804 * selected. This means that we have to leave tvnorms at
805 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
806 * tvnorms is set at the device node level and not at the
807 * filehandle level.
808 *
809 * Comment this out for now, but if the legacy mode can be
810 * removed in the future, then this code should be enabled
811 * again.
812 dev->video_dev.tvnorms =
813 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
814 */
815 }
816
817 return retval;
818 }
819
vidioc_g_input(struct file * file,void * priv,unsigned int * index)820 static int vidioc_g_input(struct file *file, void *priv,
821 unsigned int *index)
822 {
823 struct hdpvr_device *dev = video_drvdata(file);
824
825 *index = dev->options.video_input;
826 return 0;
827 }
828
829
830 static const char *audio_iname[] = {
831 [HDPVR_RCA_FRONT] = "RCA front",
832 [HDPVR_RCA_BACK] = "RCA back",
833 [HDPVR_SPDIF] = "SPDIF",
834 };
835
vidioc_enumaudio(struct file * file,void * priv,struct v4l2_audio * audio)836 static int vidioc_enumaudio(struct file *file, void *priv,
837 struct v4l2_audio *audio)
838 {
839 unsigned int n;
840
841 n = audio->index;
842 if (n >= HDPVR_AUDIO_INPUTS)
843 return -EINVAL;
844
845 audio->capability = V4L2_AUDCAP_STEREO;
846
847 strscpy(audio->name, audio_iname[n], sizeof(audio->name));
848
849 return 0;
850 }
851
vidioc_s_audio(struct file * file,void * priv,const struct v4l2_audio * audio)852 static int vidioc_s_audio(struct file *file, void *priv,
853 const struct v4l2_audio *audio)
854 {
855 struct hdpvr_device *dev = video_drvdata(file);
856 int retval;
857
858 if (audio->index >= HDPVR_AUDIO_INPUTS)
859 return -EINVAL;
860
861 if (dev->status != STATUS_IDLE)
862 return -EBUSY;
863
864 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
865 if (!retval)
866 dev->options.audio_input = audio->index;
867
868 return retval;
869 }
870
vidioc_g_audio(struct file * file,void * priv,struct v4l2_audio * audio)871 static int vidioc_g_audio(struct file *file, void *priv,
872 struct v4l2_audio *audio)
873 {
874 struct hdpvr_device *dev = video_drvdata(file);
875
876 audio->index = dev->options.audio_input;
877 audio->capability = V4L2_AUDCAP_STEREO;
878 strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
879 return 0;
880 }
881
hdpvr_try_ctrl(struct v4l2_ctrl * ctrl)882 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
883 {
884 struct hdpvr_device *dev =
885 container_of(ctrl->handler, struct hdpvr_device, hdl);
886
887 switch (ctrl->id) {
888 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
889 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
890 dev->video_bitrate->val >= dev->video_bitrate_peak->val)
891 dev->video_bitrate_peak->val =
892 dev->video_bitrate->val + 100000;
893 break;
894 }
895 return 0;
896 }
897
hdpvr_s_ctrl(struct v4l2_ctrl * ctrl)898 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
899 {
900 struct hdpvr_device *dev =
901 container_of(ctrl->handler, struct hdpvr_device, hdl);
902 struct hdpvr_options *opt = &dev->options;
903 int ret = -EINVAL;
904
905 switch (ctrl->id) {
906 case V4L2_CID_BRIGHTNESS:
907 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
908 if (ret)
909 break;
910 dev->options.brightness = ctrl->val;
911 return 0;
912 case V4L2_CID_CONTRAST:
913 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
914 if (ret)
915 break;
916 dev->options.contrast = ctrl->val;
917 return 0;
918 case V4L2_CID_SATURATION:
919 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
920 if (ret)
921 break;
922 dev->options.saturation = ctrl->val;
923 return 0;
924 case V4L2_CID_HUE:
925 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
926 if (ret)
927 break;
928 dev->options.hue = ctrl->val;
929 return 0;
930 case V4L2_CID_SHARPNESS:
931 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
932 if (ret)
933 break;
934 dev->options.sharpness = ctrl->val;
935 return 0;
936 case V4L2_CID_MPEG_AUDIO_ENCODING:
937 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
938 opt->audio_codec = ctrl->val;
939 return hdpvr_set_audio(dev, opt->audio_input + 1,
940 opt->audio_codec);
941 }
942 return 0;
943 case V4L2_CID_MPEG_VIDEO_ENCODING:
944 return 0;
945 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
946 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
947 /* opt->gop_mode |= 0x2; */
948 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
949 /* opt->gop_mode); */
950 /* } */
951 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
952 /* opt->gop_mode &= ~0x2; */
953 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
954 /* opt->gop_mode); */
955 /* } */
956 /* break; */
957 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
958 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
959 uint bitrate = dev->video_bitrate->val / 100000;
960
961 if (ctrl->is_new) {
962 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
963 opt->bitrate_mode = HDPVR_CONSTANT;
964 else
965 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
966 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
967 opt->bitrate_mode);
968 v4l2_ctrl_activate(dev->video_bitrate_peak,
969 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
970 }
971
972 if (dev->video_bitrate_peak->is_new ||
973 dev->video_bitrate->is_new) {
974 opt->bitrate = bitrate;
975 opt->peak_bitrate = peak_bitrate;
976 hdpvr_set_bitrate(dev);
977 }
978 return 0;
979 }
980 case V4L2_CID_MPEG_STREAM_TYPE:
981 return 0;
982 default:
983 break;
984 }
985 return ret;
986 }
987
vidioc_enum_fmt_vid_cap(struct file * file,void * priv,struct v4l2_fmtdesc * f)988 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
989 struct v4l2_fmtdesc *f)
990 {
991 if (f->index != 0)
992 return -EINVAL;
993
994 f->pixelformat = V4L2_PIX_FMT_MPEG;
995
996 return 0;
997 }
998
vidioc_g_fmt_vid_cap(struct file * file,void * priv,struct v4l2_format * f)999 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1000 struct v4l2_format *f)
1001 {
1002 struct hdpvr_device *dev = video_drvdata(file);
1003 struct hdpvr_fh *fh = file_to_hdpvr_fh(file);
1004 int ret;
1005
1006 /*
1007 * The original driver would always returns the current detected
1008 * resolution as the format (and EFAULT if it couldn't be detected).
1009 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1010 * better way of doing this, but to stay compatible with existing
1011 * applications we assume legacy mode every time an application opens
1012 * the device. Only if one of the new DV_TIMINGS ioctls is called
1013 * will the filehandle go into 'normal' mode where g_fmt returns the
1014 * last set format.
1015 */
1016 if (fh->legacy_mode) {
1017 struct hdpvr_video_info vid_info;
1018
1019 ret = get_video_info(dev, &vid_info);
1020 if (ret < 0)
1021 return ret;
1022 if (!vid_info.valid)
1023 return -EFAULT;
1024 f->fmt.pix.width = vid_info.width;
1025 f->fmt.pix.height = vid_info.height;
1026 } else {
1027 f->fmt.pix.width = dev->width;
1028 f->fmt.pix.height = dev->height;
1029 }
1030 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1031 f->fmt.pix.sizeimage = dev->bulk_in_size;
1032 f->fmt.pix.bytesperline = 0;
1033 if (f->fmt.pix.width == 720) {
1034 /* SDTV formats */
1035 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1036 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1037 } else {
1038 /* HDTV formats */
1039 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1040 f->fmt.pix.field = V4L2_FIELD_NONE;
1041 }
1042 return 0;
1043 }
1044
vidioc_encoder_cmd(struct file * filp,void * priv,struct v4l2_encoder_cmd * a)1045 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1046 struct v4l2_encoder_cmd *a)
1047 {
1048 struct hdpvr_device *dev = video_drvdata(filp);
1049 int res = 0;
1050
1051 mutex_lock(&dev->io_mutex);
1052 a->flags = 0;
1053
1054 switch (a->cmd) {
1055 case V4L2_ENC_CMD_START:
1056 if (dev->owner && file_to_v4l2_fh(filp) != dev->owner) {
1057 res = -EBUSY;
1058 break;
1059 }
1060 if (dev->status == STATUS_STREAMING)
1061 break;
1062 res = hdpvr_start_streaming(dev);
1063 if (!res)
1064 dev->owner = file_to_v4l2_fh(filp);
1065 else
1066 dev->status = STATUS_IDLE;
1067 break;
1068 case V4L2_ENC_CMD_STOP:
1069 if (dev->owner && file_to_v4l2_fh(filp) != dev->owner) {
1070 res = -EBUSY;
1071 break;
1072 }
1073 if (dev->status == STATUS_IDLE)
1074 break;
1075 res = hdpvr_stop_streaming(dev);
1076 if (!res)
1077 dev->owner = NULL;
1078 break;
1079 default:
1080 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1081 "Unsupported encoder cmd %d\n", a->cmd);
1082 res = -EINVAL;
1083 break;
1084 }
1085
1086 mutex_unlock(&dev->io_mutex);
1087 return res;
1088 }
1089
vidioc_try_encoder_cmd(struct file * filp,void * priv,struct v4l2_encoder_cmd * a)1090 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1091 struct v4l2_encoder_cmd *a)
1092 {
1093 a->flags = 0;
1094 switch (a->cmd) {
1095 case V4L2_ENC_CMD_START:
1096 case V4L2_ENC_CMD_STOP:
1097 return 0;
1098 default:
1099 return -EINVAL;
1100 }
1101 }
1102
1103 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1104 .vidioc_querycap = vidioc_querycap,
1105 .vidioc_s_std = vidioc_s_std,
1106 .vidioc_g_std = vidioc_g_std,
1107 .vidioc_querystd = vidioc_querystd,
1108 .vidioc_s_dv_timings = vidioc_s_dv_timings,
1109 .vidioc_g_dv_timings = vidioc_g_dv_timings,
1110 .vidioc_query_dv_timings= vidioc_query_dv_timings,
1111 .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1112 .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
1113 .vidioc_enum_input = vidioc_enum_input,
1114 .vidioc_g_input = vidioc_g_input,
1115 .vidioc_s_input = vidioc_s_input,
1116 .vidioc_enumaudio = vidioc_enumaudio,
1117 .vidioc_g_audio = vidioc_g_audio,
1118 .vidioc_s_audio = vidioc_s_audio,
1119 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1120 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1121 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1122 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1123 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1124 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1125 .vidioc_log_status = v4l2_ctrl_log_status,
1126 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1127 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1128 };
1129
hdpvr_device_release(struct video_device * vdev)1130 static void hdpvr_device_release(struct video_device *vdev)
1131 {
1132 struct hdpvr_device *dev = video_get_drvdata(vdev);
1133
1134 hdpvr_delete(dev);
1135 flush_work(&dev->worker);
1136
1137 v4l2_device_unregister(&dev->v4l2_dev);
1138 v4l2_ctrl_handler_free(&dev->hdl);
1139
1140 /* deregister I2C adapter */
1141 #if IS_ENABLED(CONFIG_I2C)
1142 mutex_lock(&dev->i2c_mutex);
1143 i2c_del_adapter(&dev->i2c_adapter);
1144 mutex_unlock(&dev->i2c_mutex);
1145 #endif /* CONFIG_I2C */
1146
1147 kfree(dev->usbc_buf);
1148 kfree(dev);
1149 }
1150
1151 static const struct video_device hdpvr_video_template = {
1152 .fops = &hdpvr_fops,
1153 .release = hdpvr_device_release,
1154 .ioctl_ops = &hdpvr_ioctl_ops,
1155 .tvnorms = V4L2_STD_ALL,
1156 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
1157 V4L2_CAP_READWRITE,
1158 };
1159
1160 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1161 .try_ctrl = hdpvr_try_ctrl,
1162 .s_ctrl = hdpvr_s_ctrl,
1163 };
1164
hdpvr_register_videodev(struct hdpvr_device * dev,struct device * parent,int devnum)1165 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1166 int devnum)
1167 {
1168 struct v4l2_ctrl_handler *hdl = &dev->hdl;
1169 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1170 int res;
1171
1172 // initialize dev->worker
1173 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
1174
1175 dev->cur_std = V4L2_STD_525_60;
1176 dev->width = 720;
1177 dev->height = 480;
1178 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1179 v4l2_ctrl_handler_init(hdl, 11);
1180 if (dev->fw_ver > 0x15) {
1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1182 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1184 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1186 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1190 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1191 } else {
1192 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1193 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1194 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1195 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1196 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1197 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1198 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1199 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1200 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1201 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1202 }
1203
1204 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1205 V4L2_CID_MPEG_STREAM_TYPE,
1206 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1207 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1208 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1209 V4L2_CID_MPEG_AUDIO_ENCODING,
1210 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1211 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1212 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1213 V4L2_CID_MPEG_VIDEO_ENCODING,
1214 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1215 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1216
1217 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1218 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1219 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1220 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1221
1222 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1223 V4L2_CID_MPEG_VIDEO_BITRATE,
1224 1000000, 13500000, 100000, 6500000);
1225 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1226 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1227 1100000, 20200000, 100000, 9000000);
1228 dev->v4l2_dev.ctrl_handler = hdl;
1229 if (hdl->error) {
1230 res = hdl->error;
1231 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1232 goto error;
1233 }
1234 v4l2_ctrl_cluster(3, &dev->video_mode);
1235 res = v4l2_ctrl_handler_setup(hdl);
1236 if (res < 0) {
1237 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1238 goto error;
1239 }
1240
1241 /* setup and register video device */
1242 dev->video_dev = hdpvr_video_template;
1243 strscpy(dev->video_dev.name, "Hauppauge HD PVR",
1244 sizeof(dev->video_dev.name));
1245 dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1246 video_set_drvdata(&dev->video_dev, dev);
1247
1248 res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, devnum);
1249 if (res < 0) {
1250 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1251 goto error;
1252 }
1253
1254 return 0;
1255 error:
1256 v4l2_ctrl_handler_free(hdl);
1257 return res;
1258 }
1259