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Merge tag 'regmap-fix-v4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux/fpc-iii.git] / drivers / media / usb / hdpvr / hdpvr-video.c
blob474c11e1d4951fb533fc49260f6faabfa1f303d2
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 "
340 "for emptying the internal device buffer. "
341 "Next capture start will be slow\n");
342
343 dev->status = STATUS_SHUTTING_DOWN;
344 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
345 mutex_unlock(&dev->io_mutex);
346
347 wake_up_interruptible(&dev->wait_buffer);
348 msleep(50);
349
350 flush_work(&dev->worker);
351
352 mutex_lock(&dev->io_mutex);
353 /* kill the still outstanding urbs */
354 hdpvr_cancel_queue(dev);
355
356 /* emptying the device buffer beforeshutting it down */
357 while (buf && ++c < 500 &&
358 !usb_bulk_msg(dev->udev,
359 usb_rcvbulkpipe(dev->udev,
360 dev->bulk_in_endpointAddr),
361 buf, dev->bulk_in_size, &actual_length,
362 BULK_URB_TIMEOUT)) {
363 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
364 "%2d: got %d bytes\n", c, actual_length);
365 }
366 kfree(buf);
367 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
368 "used %d urbs to empty device buffers\n", c-1);
369 msleep(10);
370
371 dev->status = STATUS_IDLE;
372
373 return 0;
374 }
375
376
377 /*=======================================================================*/
378 /*
379 * video 4 linux 2 file operations
380 */
381
382 static int hdpvr_open(struct file *file)
383 {
384 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
385
386 if (fh == NULL)
387 return -ENOMEM;
388 fh->legacy_mode = true;
389 v4l2_fh_init(&fh->fh, video_devdata(file));
390 v4l2_fh_add(&fh->fh);
391 file->private_data = fh;
392 return 0;
393 }
394
395 static int hdpvr_release(struct file *file)
396 {
397 struct hdpvr_device *dev = video_drvdata(file);
398
399 mutex_lock(&dev->io_mutex);
400 if (file->private_data == dev->owner) {
401 hdpvr_stop_streaming(dev);
402 dev->owner = NULL;
403 }
404 mutex_unlock(&dev->io_mutex);
405
406 return v4l2_fh_release(file);
407 }
408
409 /*
410 * hdpvr_v4l2_read()
411 * will allocate buffers when called for the first time
412 */
413 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
414 loff_t *pos)
415 {
416 struct hdpvr_device *dev = video_drvdata(file);
417 struct hdpvr_buffer *buf = NULL;
418 struct urb *urb;
419 unsigned int ret = 0;
420 int rem, cnt;
421
422 if (*pos)
423 return -ESPIPE;
424
425 mutex_lock(&dev->io_mutex);
426 if (dev->status == STATUS_IDLE) {
427 if (hdpvr_start_streaming(dev)) {
428 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
429 "start_streaming failed\n");
430 ret = -EIO;
431 msleep(200);
432 dev->status = STATUS_IDLE;
433 mutex_unlock(&dev->io_mutex);
434 goto err;
435 }
436 dev->owner = file->private_data;
437 print_buffer_status();
438 }
439 mutex_unlock(&dev->io_mutex);
440
441 /* wait for the first buffer */
442 if (!(file->f_flags & O_NONBLOCK)) {
443 if (wait_event_interruptible(dev->wait_data,
444 hdpvr_get_next_buffer(dev)))
445 return -ERESTARTSYS;
446 }
447
448 buf = hdpvr_get_next_buffer(dev);
449
450 while (count > 0 && buf) {
451
452 if (buf->status != BUFSTAT_READY &&
453 dev->status != STATUS_DISCONNECTED) {
454 /* return nonblocking */
455 if (file->f_flags & O_NONBLOCK) {
456 if (!ret)
457 ret = -EAGAIN;
458 goto err;
459 }
460
461 if (wait_event_interruptible(dev->wait_data,
462 buf->status == BUFSTAT_READY))
463 return -ERESTARTSYS;
464 }
465
466 if (buf->status != BUFSTAT_READY)
467 break;
468
469 /* set remaining bytes to copy */
470 urb = buf->urb;
471 rem = urb->actual_length - buf->pos;
472 cnt = rem > count ? count : rem;
473
474 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
475 cnt)) {
476 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
477 if (!ret)
478 ret = -EFAULT;
479 goto err;
480 }
481
482 buf->pos += cnt;
483 count -= cnt;
484 buffer += cnt;
485 ret += cnt;
486
487 /* finished, take next buffer */
488 if (buf->pos == urb->actual_length) {
489 mutex_lock(&dev->io_mutex);
490 buf->pos = 0;
491 buf->status = BUFSTAT_AVAILABLE;
492
493 list_move_tail(&buf->buff_list, &dev->free_buff_list);
494
495 print_buffer_status();
496
497 mutex_unlock(&dev->io_mutex);
498
499 wake_up_interruptible(&dev->wait_buffer);
500
501 buf = hdpvr_get_next_buffer(dev);
502 }
503 }
504 err:
505 if (!ret && !buf)
506 ret = -EAGAIN;
507 return ret;
508 }
509
510 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
511 {
512 unsigned long req_events = poll_requested_events(wait);
513 struct hdpvr_buffer *buf = NULL;
514 struct hdpvr_device *dev = video_drvdata(filp);
515 unsigned int mask = v4l2_ctrl_poll(filp, wait);
516
517 if (!(req_events & (POLLIN | POLLRDNORM)))
518 return mask;
519
520 mutex_lock(&dev->io_mutex);
521
522 if (dev->status == STATUS_IDLE) {
523 if (hdpvr_start_streaming(dev)) {
524 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
525 "start_streaming failed\n");
526 dev->status = STATUS_IDLE;
527 } else {
528 dev->owner = filp->private_data;
529 }
530
531 print_buffer_status();
532 }
533 mutex_unlock(&dev->io_mutex);
534
535 buf = hdpvr_get_next_buffer(dev);
536 /* only wait if no data is available */
537 if (!buf || buf->status != BUFSTAT_READY) {
538 poll_wait(filp, &dev->wait_data, wait);
539 buf = hdpvr_get_next_buffer(dev);
540 }
541 if (buf && buf->status == BUFSTAT_READY)
542 mask |= POLLIN | POLLRDNORM;
543
544 return mask;
545 }
546
547
548 static const struct v4l2_file_operations hdpvr_fops = {
549 .owner = THIS_MODULE,
550 .open = hdpvr_open,
551 .release = hdpvr_release,
552 .read = hdpvr_read,
553 .poll = hdpvr_poll,
554 .unlocked_ioctl = video_ioctl2,
555 };
556
557 /*=======================================================================*/
558 /*
559 * V4L2 ioctl handling
560 */
561
562 static int vidioc_querycap(struct file *file, void *priv,
563 struct v4l2_capability *cap)
564 {
565 struct hdpvr_device *dev = video_drvdata(file);
566
567 strcpy(cap->driver, "hdpvr");
568 strcpy(cap->card, "Hauppauge HD PVR");
569 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
570 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
571 V4L2_CAP_READWRITE;
572 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
573 return 0;
574 }
575
576 static int vidioc_s_std(struct file *file, void *_fh,
577 v4l2_std_id std)
578 {
579 struct hdpvr_device *dev = video_drvdata(file);
580 struct hdpvr_fh *fh = _fh;
581 u8 std_type = 1;
582
583 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
584 return -ENODATA;
585 if (dev->status != STATUS_IDLE)
586 return -EBUSY;
587 if (std & V4L2_STD_525_60)
588 std_type = 0;
589 dev->cur_std = std;
590 dev->width = 720;
591 dev->height = std_type ? 576 : 480;
592
593 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
594 }
595
596 static int vidioc_g_std(struct file *file, void *_fh,
597 v4l2_std_id *std)
598 {
599 struct hdpvr_device *dev = video_drvdata(file);
600 struct hdpvr_fh *fh = _fh;
601
602 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
603 return -ENODATA;
604 *std = dev->cur_std;
605 return 0;
606 }
607
608 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
609 {
610 struct hdpvr_device *dev = video_drvdata(file);
611 struct hdpvr_video_info vid_info;
612 struct hdpvr_fh *fh = _fh;
613 int ret;
614
615 *a = V4L2_STD_UNKNOWN;
616 if (dev->options.video_input == HDPVR_COMPONENT)
617 return fh->legacy_mode ? 0 : -ENODATA;
618 ret = get_video_info(dev, &vid_info);
619 if (vid_info.valid && vid_info.width == 720 &&
620 (vid_info.height == 480 || vid_info.height == 576)) {
621 *a = (vid_info.height == 480) ?
622 V4L2_STD_525_60 : V4L2_STD_625_50;
623 }
624 return ret;
625 }
626
627 static int vidioc_s_dv_timings(struct file *file, void *_fh,
628 struct v4l2_dv_timings *timings)
629 {
630 struct hdpvr_device *dev = video_drvdata(file);
631 struct hdpvr_fh *fh = _fh;
632 int i;
633
634 fh->legacy_mode = false;
635 if (dev->options.video_input)
636 return -ENODATA;
637 if (dev->status != STATUS_IDLE)
638 return -EBUSY;
639 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
640 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
641 break;
642 if (i == ARRAY_SIZE(hdpvr_dv_timings))
643 return -EINVAL;
644 dev->cur_dv_timings = hdpvr_dv_timings[i];
645 dev->width = hdpvr_dv_timings[i].bt.width;
646 dev->height = hdpvr_dv_timings[i].bt.height;
647 return 0;
648 }
649
650 static int vidioc_g_dv_timings(struct file *file, void *_fh,
651 struct v4l2_dv_timings *timings)
652 {
653 struct hdpvr_device *dev = video_drvdata(file);
654 struct hdpvr_fh *fh = _fh;
655
656 fh->legacy_mode = false;
657 if (dev->options.video_input)
658 return -ENODATA;
659 *timings = dev->cur_dv_timings;
660 return 0;
661 }
662
663 static int vidioc_query_dv_timings(struct file *file, void *_fh,
664 struct v4l2_dv_timings *timings)
665 {
666 struct hdpvr_device *dev = video_drvdata(file);
667 struct hdpvr_fh *fh = _fh;
668 struct hdpvr_video_info vid_info;
669 bool interlaced;
670 int ret = 0;
671 int i;
672
673 fh->legacy_mode = false;
674 if (dev->options.video_input)
675 return -ENODATA;
676 ret = get_video_info(dev, &vid_info);
677 if (ret)
678 return ret;
679 if (!vid_info.valid)
680 return -ENOLCK;
681 interlaced = vid_info.fps <= 30;
682 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
683 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
684 unsigned hsize;
685 unsigned vsize;
686 unsigned fps;
687
688 hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
689 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
690 fps = (unsigned)bt->pixelclock / (hsize * vsize);
691 if (bt->width != vid_info.width ||
692 bt->height != vid_info.height ||
693 bt->interlaced != interlaced ||
694 (fps != vid_info.fps && fps + 1 != vid_info.fps))
695 continue;
696 *timings = hdpvr_dv_timings[i];
697 break;
698 }
699 if (i == ARRAY_SIZE(hdpvr_dv_timings))
700 ret = -ERANGE;
701
702 return ret;
703 }
704
705 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
706 struct v4l2_enum_dv_timings *timings)
707 {
708 struct hdpvr_device *dev = video_drvdata(file);
709 struct hdpvr_fh *fh = _fh;
710
711 fh->legacy_mode = false;
712 memset(timings->reserved, 0, sizeof(timings->reserved));
713 if (dev->options.video_input)
714 return -ENODATA;
715 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
716 return -EINVAL;
717 timings->timings = hdpvr_dv_timings[timings->index];
718 return 0;
719 }
720
721 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
722 struct v4l2_dv_timings_cap *cap)
723 {
724 struct hdpvr_device *dev = video_drvdata(file);
725 struct hdpvr_fh *fh = _fh;
726
727 fh->legacy_mode = false;
728 if (dev->options.video_input)
729 return -ENODATA;
730 cap->type = V4L2_DV_BT_656_1120;
731 cap->bt.min_width = 720;
732 cap->bt.max_width = 1920;
733 cap->bt.min_height = 480;
734 cap->bt.max_height = 1080;
735 cap->bt.min_pixelclock = 27000000;
736 cap->bt.max_pixelclock = 74250000;
737 cap->bt.standards = V4L2_DV_BT_STD_CEA861;
738 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
739 return 0;
740 }
741
742 static const char *iname[] = {
743 [HDPVR_COMPONENT] = "Component",
744 [HDPVR_SVIDEO] = "S-Video",
745 [HDPVR_COMPOSITE] = "Composite",
746 };
747
748 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
749 {
750 unsigned int n;
751
752 n = i->index;
753 if (n >= HDPVR_VIDEO_INPUTS)
754 return -EINVAL;
755
756 i->type = V4L2_INPUT_TYPE_CAMERA;
757
758 strncpy(i->name, iname[n], sizeof(i->name) - 1);
759 i->name[sizeof(i->name) - 1] = '\0';
760
761 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
762
763 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
764 i->std = n ? V4L2_STD_ALL : 0;
765
766 return 0;
767 }
768
769 static int vidioc_s_input(struct file *file, void *_fh,
770 unsigned int index)
771 {
772 struct hdpvr_device *dev = video_drvdata(file);
773 int retval;
774
775 if (index >= HDPVR_VIDEO_INPUTS)
776 return -EINVAL;
777
778 if (dev->status != STATUS_IDLE)
779 return -EBUSY;
780
781 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
782 if (!retval) {
783 dev->options.video_input = index;
784 /*
785 * Unfortunately gstreamer calls ENUMSTD and bails out if it
786 * won't find any formats, even though component input is
787 * selected. This means that we have to leave tvnorms at
788 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
789 * tvnorms is set at the device node level and not at the
790 * filehandle level.
791 *
792 * Comment this out for now, but if the legacy mode can be
793 * removed in the future, then this code should be enabled
794 * again.
795 dev->video_dev.tvnorms =
796 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
797 */
798 }
799
800 return retval;
801 }
802
803 static int vidioc_g_input(struct file *file, void *private_data,
804 unsigned int *index)
805 {
806 struct hdpvr_device *dev = video_drvdata(file);
807
808 *index = dev->options.video_input;
809 return 0;
810 }
811
812
813 static const char *audio_iname[] = {
814 [HDPVR_RCA_FRONT] = "RCA front",
815 [HDPVR_RCA_BACK] = "RCA back",
816 [HDPVR_SPDIF] = "SPDIF",
817 };
818
819 static int vidioc_enumaudio(struct file *file, void *priv,
820 struct v4l2_audio *audio)
821 {
822 unsigned int n;
823
824 n = audio->index;
825 if (n >= HDPVR_AUDIO_INPUTS)
826 return -EINVAL;
827
828 audio->capability = V4L2_AUDCAP_STEREO;
829
830 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
831 audio->name[sizeof(audio->name) - 1] = '\0';
832
833 return 0;
834 }
835
836 static int vidioc_s_audio(struct file *file, void *private_data,
837 const struct v4l2_audio *audio)
838 {
839 struct hdpvr_device *dev = video_drvdata(file);
840 int retval;
841
842 if (audio->index >= HDPVR_AUDIO_INPUTS)
843 return -EINVAL;
844
845 if (dev->status != STATUS_IDLE)
846 return -EBUSY;
847
848 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
849 if (!retval)
850 dev->options.audio_input = audio->index;
851
852 return retval;
853 }
854
855 static int vidioc_g_audio(struct file *file, void *private_data,
856 struct v4l2_audio *audio)
857 {
858 struct hdpvr_device *dev = video_drvdata(file);
859
860 audio->index = dev->options.audio_input;
861 audio->capability = V4L2_AUDCAP_STEREO;
862 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
863 audio->name[sizeof(audio->name) - 1] = '\0';
864 return 0;
865 }
866
867 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
868 {
869 struct hdpvr_device *dev =
870 container_of(ctrl->handler, struct hdpvr_device, hdl);
871
872 switch (ctrl->id) {
873 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
874 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
875 dev->video_bitrate->val >= dev->video_bitrate_peak->val)
876 dev->video_bitrate_peak->val =
877 dev->video_bitrate->val + 100000;
878 break;
879 }
880 return 0;
881 }
882
883 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
884 {
885 struct hdpvr_device *dev =
886 container_of(ctrl->handler, struct hdpvr_device, hdl);
887 struct hdpvr_options *opt = &dev->options;
888 int ret = -EINVAL;
889
890 switch (ctrl->id) {
891 case V4L2_CID_BRIGHTNESS:
892 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
893 if (ret)
894 break;
895 dev->options.brightness = ctrl->val;
896 return 0;
897 case V4L2_CID_CONTRAST:
898 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
899 if (ret)
900 break;
901 dev->options.contrast = ctrl->val;
902 return 0;
903 case V4L2_CID_SATURATION:
904 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
905 if (ret)
906 break;
907 dev->options.saturation = ctrl->val;
908 return 0;
909 case V4L2_CID_HUE:
910 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
911 if (ret)
912 break;
913 dev->options.hue = ctrl->val;
914 return 0;
915 case V4L2_CID_SHARPNESS:
916 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
917 if (ret)
918 break;
919 dev->options.sharpness = ctrl->val;
920 return 0;
921 case V4L2_CID_MPEG_AUDIO_ENCODING:
922 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
923 opt->audio_codec = ctrl->val;
924 return hdpvr_set_audio(dev, opt->audio_input + 1,
925 opt->audio_codec);
926 }
927 return 0;
928 case V4L2_CID_MPEG_VIDEO_ENCODING:
929 return 0;
930 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
931 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
932 /* opt->gop_mode |= 0x2; */
933 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
934 /* opt->gop_mode); */
935 /* } */
936 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
937 /* opt->gop_mode &= ~0x2; */
938 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
939 /* opt->gop_mode); */
940 /* } */
941 /* break; */
942 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
943 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
944 uint bitrate = dev->video_bitrate->val / 100000;
945
946 if (ctrl->is_new) {
947 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
948 opt->bitrate_mode = HDPVR_CONSTANT;
949 else
950 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
951 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
952 opt->bitrate_mode);
953 v4l2_ctrl_activate(dev->video_bitrate_peak,
954 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
955 }
956
957 if (dev->video_bitrate_peak->is_new ||
958 dev->video_bitrate->is_new) {
959 opt->bitrate = bitrate;
960 opt->peak_bitrate = peak_bitrate;
961 hdpvr_set_bitrate(dev);
962 }
963 return 0;
964 }
965 case V4L2_CID_MPEG_STREAM_TYPE:
966 return 0;
967 default:
968 break;
969 }
970 return ret;
971 }
972
973 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
974 struct v4l2_fmtdesc *f)
975 {
976 if (f->index != 0)
977 return -EINVAL;
978
979 f->flags = V4L2_FMT_FLAG_COMPRESSED;
980 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
981 f->pixelformat = V4L2_PIX_FMT_MPEG;
982
983 return 0;
984 }
985
986 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
987 struct v4l2_format *f)
988 {
989 struct hdpvr_device *dev = video_drvdata(file);
990 struct hdpvr_fh *fh = _fh;
991 int ret;
992
993 /*
994 * The original driver would always returns the current detected
995 * resolution as the format (and EFAULT if it couldn't be detected).
996 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
997 * better way of doing this, but to stay compatible with existing
998 * applications we assume legacy mode every time an application opens
999 * the device. Only if one of the new DV_TIMINGS ioctls is called
1000 * will the filehandle go into 'normal' mode where g_fmt returns the
1001 * last set format.
1002 */
1003 if (fh->legacy_mode) {
1004 struct hdpvr_video_info vid_info;
1005
1006 ret = get_video_info(dev, &vid_info);
1007 if (ret < 0)
1008 return ret;
1009 if (!vid_info.valid)
1010 return -EFAULT;
1011 f->fmt.pix.width = vid_info.width;
1012 f->fmt.pix.height = vid_info.height;
1013 } else {
1014 f->fmt.pix.width = dev->width;
1015 f->fmt.pix.height = dev->height;
1016 }
1017 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1018 f->fmt.pix.sizeimage = dev->bulk_in_size;
1019 f->fmt.pix.bytesperline = 0;
1020 if (f->fmt.pix.width == 720) {
1021 /* SDTV formats */
1022 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1023 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1024 } else {
1025 /* HDTV formats */
1026 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1027 f->fmt.pix.field = V4L2_FIELD_NONE;
1028 }
1029 return 0;
1030 }
1031
1032 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1033 struct v4l2_encoder_cmd *a)
1034 {
1035 struct hdpvr_device *dev = video_drvdata(filp);
1036 int res = 0;
1037
1038 mutex_lock(&dev->io_mutex);
1039 a->flags = 0;
1040
1041 switch (a->cmd) {
1042 case V4L2_ENC_CMD_START:
1043 if (dev->owner && filp->private_data != dev->owner) {
1044 res = -EBUSY;
1045 break;
1046 }
1047 if (dev->status == STATUS_STREAMING)
1048 break;
1049 res = hdpvr_start_streaming(dev);
1050 if (!res)
1051 dev->owner = filp->private_data;
1052 else
1053 dev->status = STATUS_IDLE;
1054 break;
1055 case V4L2_ENC_CMD_STOP:
1056 if (dev->owner && filp->private_data != dev->owner) {
1057 res = -EBUSY;
1058 break;
1059 }
1060 if (dev->status == STATUS_IDLE)
1061 break;
1062 res = hdpvr_stop_streaming(dev);
1063 if (!res)
1064 dev->owner = NULL;
1065 break;
1066 default:
1067 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1068 "Unsupported encoder cmd %d\n", a->cmd);
1069 res = -EINVAL;
1070 break;
1071 }
1072
1073 mutex_unlock(&dev->io_mutex);
1074 return res;
1075 }
1076
1077 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1078 struct v4l2_encoder_cmd *a)
1079 {
1080 a->flags = 0;
1081 switch (a->cmd) {
1082 case V4L2_ENC_CMD_START:
1083 case V4L2_ENC_CMD_STOP:
1084 return 0;
1085 default:
1086 return -EINVAL;
1087 }
1088 }
1089
1090 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1091 .vidioc_querycap = vidioc_querycap,
1092 .vidioc_s_std = vidioc_s_std,
1093 .vidioc_g_std = vidioc_g_std,
1094 .vidioc_querystd = vidioc_querystd,
1095 .vidioc_s_dv_timings = vidioc_s_dv_timings,
1096 .vidioc_g_dv_timings = vidioc_g_dv_timings,
1097 .vidioc_query_dv_timings= vidioc_query_dv_timings,
1098 .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1099 .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
1100 .vidioc_enum_input = vidioc_enum_input,
1101 .vidioc_g_input = vidioc_g_input,
1102 .vidioc_s_input = vidioc_s_input,
1103 .vidioc_enumaudio = vidioc_enumaudio,
1104 .vidioc_g_audio = vidioc_g_audio,
1105 .vidioc_s_audio = vidioc_s_audio,
1106 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1107 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1108 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1109 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1110 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1111 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1112 .vidioc_log_status = v4l2_ctrl_log_status,
1113 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1114 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1115 };
1116
1117 static void hdpvr_device_release(struct video_device *vdev)
1118 {
1119 struct hdpvr_device *dev = video_get_drvdata(vdev);
1120
1121 hdpvr_delete(dev);
1122 mutex_lock(&dev->io_mutex);
1123 flush_work(&dev->worker);
1124 mutex_unlock(&dev->io_mutex);
1125
1126 v4l2_device_unregister(&dev->v4l2_dev);
1127 v4l2_ctrl_handler_free(&dev->hdl);
1128
1129 /* deregister I2C adapter */
1130 #if IS_ENABLED(CONFIG_I2C)
1131 mutex_lock(&dev->i2c_mutex);
1132 i2c_del_adapter(&dev->i2c_adapter);
1133 mutex_unlock(&dev->i2c_mutex);
1134 #endif /* CONFIG_I2C */
1135
1136 kfree(dev->usbc_buf);
1137 kfree(dev);
1138 }
1139
1140 static const struct video_device hdpvr_video_template = {
1141 .fops = &hdpvr_fops,
1142 .release = hdpvr_device_release,
1143 .ioctl_ops = &hdpvr_ioctl_ops,
1144 .tvnorms = V4L2_STD_ALL,
1145 };
1146
1147 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1148 .try_ctrl = hdpvr_try_ctrl,
1149 .s_ctrl = hdpvr_s_ctrl,
1150 };
1151
1152 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1153 int devnum)
1154 {
1155 struct v4l2_ctrl_handler *hdl = &dev->hdl;
1156 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1157 int res;
1158
1159 dev->cur_std = V4L2_STD_525_60;
1160 dev->width = 720;
1161 dev->height = 480;
1162 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1163 v4l2_ctrl_handler_init(hdl, 11);
1164 if (dev->fw_ver > 0x15) {
1165 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1166 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1167 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1168 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1169 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1170 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1171 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1172 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1173 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1174 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1175 } else {
1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1177 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1179 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1181 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1182 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1183 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1184 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1185 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1186 }
1187
1188 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1189 V4L2_CID_MPEG_STREAM_TYPE,
1190 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1191 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1192 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1193 V4L2_CID_MPEG_AUDIO_ENCODING,
1194 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1195 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1196 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1197 V4L2_CID_MPEG_VIDEO_ENCODING,
1198 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1199 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1200
1201 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1202 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1203 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1204 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1205
1206 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1207 V4L2_CID_MPEG_VIDEO_BITRATE,
1208 1000000, 13500000, 100000, 6500000);
1209 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1210 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1211 1100000, 20200000, 100000, 9000000);
1212 dev->v4l2_dev.ctrl_handler = hdl;
1213 if (hdl->error) {
1214 res = hdl->error;
1215 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1216 goto error;
1217 }
1218 v4l2_ctrl_cluster(3, &dev->video_mode);
1219 res = v4l2_ctrl_handler_setup(hdl);
1220 if (res < 0) {
1221 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1222 goto error;
1223 }
1224
1225 /* setup and register video device */
1226 dev->video_dev = hdpvr_video_template;
1227 strcpy(dev->video_dev.name, "Hauppauge HD PVR");
1228 dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1229 video_set_drvdata(&dev->video_dev, dev);
1230
1231 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum);
1232 if (res < 0) {
1233 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1234 goto error;
1235 }
1236
1237 return 0;
1238 error:
1239 v4l2_ctrl_handler_free(hdl);
1240 return res;
1241 }
Linux with added FPC-III support