?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / media / usb / hdpvr / hdpvr-video.c
blobfd7d2a9d0449ab9ba68ddfa148a167797ea243fc
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
55 static uint list_size(struct list_head *list)
56 {
57 struct list_head *tmp;
58 uint count = 0;
59
60 list_for_each(tmp, list) {
61 count++;
62 }
63
64 return count;
65 }
66
67 /*=========================================================================*/
68 /* urb callback */
69 static void hdpvr_read_bulk_callback(struct urb *urb)
70 {
71 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
72 struct hdpvr_device *dev = buf->dev;
73
74 /* marking buffer as received and wake waiting */
75 buf->status = BUFSTAT_READY;
76 wake_up_interruptible(&dev->wait_data);
77 }
78
79 /*=========================================================================*/
80 /* buffer bits */
81
82 /* function expects dev->io_mutex to be hold by caller */
83 int hdpvr_cancel_queue(struct hdpvr_device *dev)
84 {
85 struct hdpvr_buffer *buf;
86
87 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
88 usb_kill_urb(buf->urb);
89 buf->status = BUFSTAT_AVAILABLE;
90 }
91
92 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
93
94 return 0;
95 }
96
97 static int hdpvr_free_queue(struct list_head *q)
98 {
99 struct list_head *tmp;
100 struct list_head *p;
101 struct hdpvr_buffer *buf;
102 struct urb *urb;
103
104 for (p = q->next; p != q;) {
105 buf = list_entry(p, struct hdpvr_buffer, buff_list);
106
107 urb = buf->urb;
108 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
109 urb->transfer_buffer, urb->transfer_dma);
110 usb_free_urb(urb);
111 tmp = p->next;
112 list_del(p);
113 kfree(buf);
114 p = tmp;
115 }
116
117 return 0;
118 }
119
120 /* function expects dev->io_mutex to be hold by caller */
121 int hdpvr_free_buffers(struct hdpvr_device *dev)
122 {
123 hdpvr_cancel_queue(dev);
124
125 hdpvr_free_queue(&dev->free_buff_list);
126 hdpvr_free_queue(&dev->rec_buff_list);
127
128 return 0;
129 }
130
131 /* function expects dev->io_mutex to be hold by caller */
132 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
133 {
134 uint i;
135 int retval = -ENOMEM;
136 u8 *mem;
137 struct hdpvr_buffer *buf;
138 struct urb *urb;
139
140 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
141 "allocating %u buffers\n", count);
142
143 for (i = 0; i < count; i++) {
144
145 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
146 if (!buf) {
147 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
148 goto exit;
149 }
150 buf->dev = dev;
151
152 urb = usb_alloc_urb(0, GFP_KERNEL);
153 if (!urb)
154 goto exit_urb;
155 buf->urb = urb;
156
157 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
158 &urb->transfer_dma);
159 if (!mem) {
160 v4l2_err(&dev->v4l2_dev,
161 "cannot allocate usb transfer buffer\n");
162 goto exit_urb_buffer;
163 }
164
165 usb_fill_bulk_urb(buf->urb, dev->udev,
166 usb_rcvbulkpipe(dev->udev,
167 dev->bulk_in_endpointAddr),
168 mem, dev->bulk_in_size,
169 hdpvr_read_bulk_callback, buf);
170
171 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
172 buf->status = BUFSTAT_AVAILABLE;
173 list_add_tail(&buf->buff_list, &dev->free_buff_list);
174 }
175 return 0;
176 exit_urb_buffer:
177 usb_free_urb(urb);
178 exit_urb:
179 kfree(buf);
180 exit:
181 hdpvr_free_buffers(dev);
182 return retval;
183 }
184
185 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
186 {
187 struct hdpvr_buffer *buf;
188 struct urb *urb;
189 int ret = 0, err_count = 0;
190
191 mutex_lock(&dev->io_mutex);
192
193 while (dev->status == STATUS_STREAMING &&
194 !list_empty(&dev->free_buff_list)) {
195
196 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
197 buff_list);
198 if (buf->status != BUFSTAT_AVAILABLE) {
199 v4l2_err(&dev->v4l2_dev,
200 "buffer not marked as available\n");
201 ret = -EFAULT;
202 goto err;
203 }
204
205 urb = buf->urb;
206 urb->status = 0;
207 urb->actual_length = 0;
208 ret = usb_submit_urb(urb, GFP_KERNEL);
209 if (ret) {
210 v4l2_err(&dev->v4l2_dev,
211 "usb_submit_urb in %s returned %d\n",
212 __func__, ret);
213 if (++err_count > 2)
214 break;
215 continue;
216 }
217 buf->status = BUFSTAT_INPROGRESS;
218 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
219 }
220 err:
221 print_buffer_status();
222 mutex_unlock(&dev->io_mutex);
223 return ret;
224 }
225
226 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
227 {
228 struct hdpvr_buffer *buf;
229
230 mutex_lock(&dev->io_mutex);
231
232 if (list_empty(&dev->rec_buff_list)) {
233 mutex_unlock(&dev->io_mutex);
234 return NULL;
235 }
236
237 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
238 buff_list);
239 mutex_unlock(&dev->io_mutex);
240
241 return buf;
242 }
243
244 static void hdpvr_transmit_buffers(struct work_struct *work)
245 {
246 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
247 worker);
248
249 while (dev->status == STATUS_STREAMING) {
250
251 if (hdpvr_submit_buffers(dev)) {
252 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
253 goto error;
254 }
255 if (wait_event_interruptible(dev->wait_buffer,
256 !list_empty(&dev->free_buff_list) ||
257 dev->status != STATUS_STREAMING))
258 goto error;
259 }
260
261 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
262 "transmit worker exited\n");
263 return;
264 error:
265 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
266 "transmit buffers errored\n");
267 dev->status = STATUS_ERROR;
268 }
269
270 /* function expects dev->io_mutex to be hold by caller */
271 static int hdpvr_start_streaming(struct hdpvr_device *dev)
272 {
273 int ret;
274 struct hdpvr_video_info vidinf;
275
276 if (dev->status == STATUS_STREAMING)
277 return 0;
278 if (dev->status != STATUS_IDLE)
279 return -EAGAIN;
280
281 ret = get_video_info(dev, &vidinf);
282 if (ret < 0)
283 return ret;
284
285 if (!vidinf.valid) {
286 msleep(250);
287 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
288 "no video signal at input %d\n", dev->options.video_input);
289 return -EAGAIN;
290 }
291
292 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
293 "video signal: %dx%d@%dhz\n", vidinf.width,
294 vidinf.height, vidinf.fps);
295
296 /* start streaming 2 request */
297 ret = usb_control_msg(dev->udev,
298 usb_sndctrlpipe(dev->udev, 0),
299 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
300 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
301 "encoder start control request returned %d\n", ret);
302 if (ret < 0)
303 return ret;
304
305 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
306 if (ret)
307 return ret;
308
309 dev->status = STATUS_STREAMING;
310
311 schedule_work(&dev->worker);
312
313 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
314 "streaming started\n");
315
316 return 0;
317 }
318
319
320 /* function expects dev->io_mutex to be hold by caller */
321 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
322 {
323 int actual_length;
324 uint c = 0;
325 u8 *buf;
326
327 if (dev->status == STATUS_IDLE)
328 return 0;
329 else if (dev->status != STATUS_STREAMING)
330 return -EAGAIN;
331
332 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
333 if (!buf)
334 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n");
335
336 dev->status = STATUS_SHUTTING_DOWN;
337 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
338 mutex_unlock(&dev->io_mutex);
339
340 wake_up_interruptible(&dev->wait_buffer);
341 msleep(50);
342
343 flush_work(&dev->worker);
344
345 mutex_lock(&dev->io_mutex);
346 /* kill the still outstanding urbs */
347 hdpvr_cancel_queue(dev);
348
349 /* emptying the device buffer beforeshutting it down */
350 while (buf && ++c < 500 &&
351 !usb_bulk_msg(dev->udev,
352 usb_rcvbulkpipe(dev->udev,
353 dev->bulk_in_endpointAddr),
354 buf, dev->bulk_in_size, &actual_length,
355 BULK_URB_TIMEOUT)) {
356 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
357 "%2d: got %d bytes\n", c, actual_length);
358 }
359 kfree(buf);
360 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
361 "used %d urbs to empty device buffers\n", c-1);
362 msleep(10);
363
364 dev->status = STATUS_IDLE;
365
366 return 0;
367 }
368
369
370 /*=======================================================================*/
371 /*
372 * video 4 linux 2 file operations
373 */
374
375 static int hdpvr_open(struct file *file)
376 {
377 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
378
379 if (fh == NULL)
380 return -ENOMEM;
381 fh->legacy_mode = true;
382 v4l2_fh_init(&fh->fh, video_devdata(file));
383 v4l2_fh_add(&fh->fh);
384 file->private_data = fh;
385 return 0;
386 }
387
388 static int hdpvr_release(struct file *file)
389 {
390 struct hdpvr_device *dev = video_drvdata(file);
391
392 mutex_lock(&dev->io_mutex);
393 if (file->private_data == dev->owner) {
394 hdpvr_stop_streaming(dev);
395 dev->owner = NULL;
396 }
397 mutex_unlock(&dev->io_mutex);
398
399 return v4l2_fh_release(file);
400 }
401
402 /*
403 * hdpvr_v4l2_read()
404 * will allocate buffers when called for the first time
405 */
406 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
407 loff_t *pos)
408 {
409 struct hdpvr_device *dev = video_drvdata(file);
410 struct hdpvr_buffer *buf = NULL;
411 struct urb *urb;
412 int ret = 0;
413 int rem, cnt;
414
415 if (*pos)
416 return -ESPIPE;
417
418 mutex_lock(&dev->io_mutex);
419 if (dev->status == STATUS_IDLE) {
420 if (hdpvr_start_streaming(dev)) {
421 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
422 "start_streaming failed\n");
423 ret = -EIO;
424 msleep(200);
425 dev->status = STATUS_IDLE;
426 mutex_unlock(&dev->io_mutex);
427 goto err;
428 }
429 dev->owner = file->private_data;
430 print_buffer_status();
431 }
432 mutex_unlock(&dev->io_mutex);
433
434 /* wait for the first buffer */
435 if (!(file->f_flags & O_NONBLOCK)) {
436 if (wait_event_interruptible(dev->wait_data,
437 !list_empty_careful(&dev->rec_buff_list)))
438 return -ERESTARTSYS;
439 }
440
441 buf = hdpvr_get_next_buffer(dev);
442
443 while (count > 0 && buf) {
444
445 if (buf->status != BUFSTAT_READY &&
446 dev->status != STATUS_DISCONNECTED) {
447 int err;
448 /* return nonblocking */
449 if (file->f_flags & O_NONBLOCK) {
450 if (!ret)
451 ret = -EAGAIN;
452 goto err;
453 }
454
455 err = wait_event_interruptible_timeout(dev->wait_data,
456 buf->status == BUFSTAT_READY,
457 msecs_to_jiffies(1000));
458 if (err < 0) {
459 ret = err;
460 goto err;
461 }
462 if (!err) {
463 v4l2_info(&dev->v4l2_dev,
464 "timeout: restart streaming\n");
465 mutex_lock(&dev->io_mutex);
466 hdpvr_stop_streaming(dev);
467 mutex_unlock(&dev->io_mutex);
468 /*
469 * The FW needs about 4 seconds after streaming
470 * stopped before it is ready to restart
471 * streaming.
472 */
473 msleep(4000);
474 err = hdpvr_start_streaming(dev);
475 if (err) {
476 ret = err;
477 goto err;
478 }
479 }
480 }
481
482 if (buf->status != BUFSTAT_READY)
483 break;
484
485 /* set remaining bytes to copy */
486 urb = buf->urb;
487 rem = urb->actual_length - buf->pos;
488 cnt = rem > count ? count : rem;
489
490 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
491 cnt)) {
492 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
493 if (!ret)
494 ret = -EFAULT;
495 goto err;
496 }
497
498 buf->pos += cnt;
499 count -= cnt;
500 buffer += cnt;
501 ret += cnt;
502
503 /* finished, take next buffer */
504 if (buf->pos == urb->actual_length) {
505 mutex_lock(&dev->io_mutex);
506 buf->pos = 0;
507 buf->status = BUFSTAT_AVAILABLE;
508
509 list_move_tail(&buf->buff_list, &dev->free_buff_list);
510
511 print_buffer_status();
512
513 mutex_unlock(&dev->io_mutex);
514
515 wake_up_interruptible(&dev->wait_buffer);
516
517 buf = hdpvr_get_next_buffer(dev);
518 }
519 }
520 err:
521 if (!ret && !buf)
522 ret = -EAGAIN;
523 return ret;
524 }
525
526 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait)
527 {
528 __poll_t req_events = poll_requested_events(wait);
529 struct hdpvr_buffer *buf = NULL;
530 struct hdpvr_device *dev = video_drvdata(filp);
531 __poll_t mask = v4l2_ctrl_poll(filp, wait);
532
533 if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
534 return mask;
535
536 mutex_lock(&dev->io_mutex);
537
538 if (dev->status == STATUS_IDLE) {
539 if (hdpvr_start_streaming(dev)) {
540 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
541 "start_streaming failed\n");
542 dev->status = STATUS_IDLE;
543 } else {
544 dev->owner = filp->private_data;
545 }
546
547 print_buffer_status();
548 }
549 mutex_unlock(&dev->io_mutex);
550
551 buf = hdpvr_get_next_buffer(dev);
552 /* only wait if no data is available */
553 if (!buf || buf->status != BUFSTAT_READY) {
554 poll_wait(filp, &dev->wait_data, wait);
555 buf = hdpvr_get_next_buffer(dev);
556 }
557 if (buf && buf->status == BUFSTAT_READY)
558 mask |= EPOLLIN | EPOLLRDNORM;
559
560 return mask;
561 }
562
563
564 static const struct v4l2_file_operations hdpvr_fops = {
565 .owner = THIS_MODULE,
566 .open = hdpvr_open,
567 .release = hdpvr_release,
568 .read = hdpvr_read,
569 .poll = hdpvr_poll,
570 .unlocked_ioctl = video_ioctl2,
571 };
572
573 /*=======================================================================*/
574 /*
575 * V4L2 ioctl handling
576 */
577
578 static int vidioc_querycap(struct file *file, void *priv,
579 struct v4l2_capability *cap)
580 {
581 struct hdpvr_device *dev = video_drvdata(file);
582
583 strscpy(cap->driver, "hdpvr", sizeof(cap->driver));
584 strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card));
585 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
586 return 0;
587 }
588
589 static int vidioc_s_std(struct file *file, void *_fh,
590 v4l2_std_id std)
591 {
592 struct hdpvr_device *dev = video_drvdata(file);
593 struct hdpvr_fh *fh = _fh;
594 u8 std_type = 1;
595
596 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
597 return -ENODATA;
598 if (dev->status != STATUS_IDLE)
599 return -EBUSY;
600 if (std & V4L2_STD_525_60)
601 std_type = 0;
602 dev->cur_std = std;
603 dev->width = 720;
604 dev->height = std_type ? 576 : 480;
605
606 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
607 }
608
609 static int vidioc_g_std(struct file *file, void *_fh,
610 v4l2_std_id *std)
611 {
612 struct hdpvr_device *dev = video_drvdata(file);
613 struct hdpvr_fh *fh = _fh;
614
615 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
616 return -ENODATA;
617 *std = dev->cur_std;
618 return 0;
619 }
620
621 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
622 {
623 struct hdpvr_device *dev = video_drvdata(file);
624 struct hdpvr_video_info vid_info;
625 struct hdpvr_fh *fh = _fh;
626 int ret;
627
628 *a = V4L2_STD_UNKNOWN;
629 if (dev->options.video_input == HDPVR_COMPONENT)
630 return fh->legacy_mode ? 0 : -ENODATA;
631 ret = get_video_info(dev, &vid_info);
632 if (vid_info.valid && vid_info.width == 720 &&
633 (vid_info.height == 480 || vid_info.height == 576)) {
634 *a = (vid_info.height == 480) ?
635 V4L2_STD_525_60 : V4L2_STD_625_50;
636 }
637 return ret;
638 }
639
640 static int vidioc_s_dv_timings(struct file *file, void *_fh,
641 struct v4l2_dv_timings *timings)
642 {
643 struct hdpvr_device *dev = video_drvdata(file);
644 struct hdpvr_fh *fh = _fh;
645 int i;
646
647 fh->legacy_mode = false;
648 if (dev->options.video_input)
649 return -ENODATA;
650 if (dev->status != STATUS_IDLE)
651 return -EBUSY;
652 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
653 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
654 break;
655 if (i == ARRAY_SIZE(hdpvr_dv_timings))
656 return -EINVAL;
657 dev->cur_dv_timings = hdpvr_dv_timings[i];
658 dev->width = hdpvr_dv_timings[i].bt.width;
659 dev->height = hdpvr_dv_timings[i].bt.height;
660 return 0;
661 }
662
663 static int vidioc_g_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
669 fh->legacy_mode = false;
670 if (dev->options.video_input)
671 return -ENODATA;
672 *timings = dev->cur_dv_timings;
673 return 0;
674 }
675
676 static int vidioc_query_dv_timings(struct file *file, void *_fh,
677 struct v4l2_dv_timings *timings)
678 {
679 struct hdpvr_device *dev = video_drvdata(file);
680 struct hdpvr_fh *fh = _fh;
681 struct hdpvr_video_info vid_info;
682 bool interlaced;
683 int ret = 0;
684 int i;
685
686 fh->legacy_mode = false;
687 if (dev->options.video_input)
688 return -ENODATA;
689 ret = get_video_info(dev, &vid_info);
690 if (ret)
691 return ret;
692 if (!vid_info.valid)
693 return -ENOLCK;
694 interlaced = vid_info.fps <= 30;
695 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
696 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
697 unsigned hsize;
698 unsigned vsize;
699 unsigned fps;
700
701 hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
702 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
703 fps = (unsigned)bt->pixelclock / (hsize * vsize);
704 if (bt->width != vid_info.width ||
705 bt->height != vid_info.height ||
706 bt->interlaced != interlaced ||
707 (fps != vid_info.fps && fps + 1 != vid_info.fps))
708 continue;
709 *timings = hdpvr_dv_timings[i];
710 break;
711 }
712 if (i == ARRAY_SIZE(hdpvr_dv_timings))
713 ret = -ERANGE;
714
715 return ret;
716 }
717
718 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
719 struct v4l2_enum_dv_timings *timings)
720 {
721 struct hdpvr_device *dev = video_drvdata(file);
722 struct hdpvr_fh *fh = _fh;
723
724 fh->legacy_mode = false;
725 memset(timings->reserved, 0, sizeof(timings->reserved));
726 if (dev->options.video_input)
727 return -ENODATA;
728 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
729 return -EINVAL;
730 timings->timings = hdpvr_dv_timings[timings->index];
731 return 0;
732 }
733
734 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
735 struct v4l2_dv_timings_cap *cap)
736 {
737 struct hdpvr_device *dev = video_drvdata(file);
738 struct hdpvr_fh *fh = _fh;
739
740 fh->legacy_mode = false;
741 if (dev->options.video_input)
742 return -ENODATA;
743 cap->type = V4L2_DV_BT_656_1120;
744 cap->bt.min_width = 720;
745 cap->bt.max_width = 1920;
746 cap->bt.min_height = 480;
747 cap->bt.max_height = 1080;
748 cap->bt.min_pixelclock = 27000000;
749 cap->bt.max_pixelclock = 74250000;
750 cap->bt.standards = V4L2_DV_BT_STD_CEA861;
751 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
752 return 0;
753 }
754
755 static const char *iname[] = {
756 [HDPVR_COMPONENT] = "Component",
757 [HDPVR_SVIDEO] = "S-Video",
758 [HDPVR_COMPOSITE] = "Composite",
759 };
760
761 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
762 {
763 unsigned int n;
764
765 n = i->index;
766 if (n >= HDPVR_VIDEO_INPUTS)
767 return -EINVAL;
768
769 i->type = V4L2_INPUT_TYPE_CAMERA;
770
771 strscpy(i->name, iname[n], sizeof(i->name));
772
773 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
774
775 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
776 i->std = n ? V4L2_STD_ALL : 0;
777
778 return 0;
779 }
780
781 static int vidioc_s_input(struct file *file, void *_fh,
782 unsigned int index)
783 {
784 struct hdpvr_device *dev = video_drvdata(file);
785 int retval;
786
787 if (index >= HDPVR_VIDEO_INPUTS)
788 return -EINVAL;
789
790 if (dev->status != STATUS_IDLE)
791 return -EBUSY;
792
793 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
794 if (!retval) {
795 dev->options.video_input = index;
796 /*
797 * Unfortunately gstreamer calls ENUMSTD and bails out if it
798 * won't find any formats, even though component input is
799 * selected. This means that we have to leave tvnorms at
800 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
801 * tvnorms is set at the device node level and not at the
802 * filehandle level.
803 *
804 * Comment this out for now, but if the legacy mode can be
805 * removed in the future, then this code should be enabled
806 * again.
807 dev->video_dev.tvnorms =
808 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
809 */
810 }
811
812 return retval;
813 }
814
815 static int vidioc_g_input(struct file *file, void *private_data,
816 unsigned int *index)
817 {
818 struct hdpvr_device *dev = video_drvdata(file);
819
820 *index = dev->options.video_input;
821 return 0;
822 }
823
824
825 static const char *audio_iname[] = {
826 [HDPVR_RCA_FRONT] = "RCA front",
827 [HDPVR_RCA_BACK] = "RCA back",
828 [HDPVR_SPDIF] = "SPDIF",
829 };
830
831 static int vidioc_enumaudio(struct file *file, void *priv,
832 struct v4l2_audio *audio)
833 {
834 unsigned int n;
835
836 n = audio->index;
837 if (n >= HDPVR_AUDIO_INPUTS)
838 return -EINVAL;
839
840 audio->capability = V4L2_AUDCAP_STEREO;
841
842 strscpy(audio->name, audio_iname[n], sizeof(audio->name));
843
844 return 0;
845 }
846
847 static int vidioc_s_audio(struct file *file, void *private_data,
848 const struct v4l2_audio *audio)
849 {
850 struct hdpvr_device *dev = video_drvdata(file);
851 int retval;
852
853 if (audio->index >= HDPVR_AUDIO_INPUTS)
854 return -EINVAL;
855
856 if (dev->status != STATUS_IDLE)
857 return -EBUSY;
858
859 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
860 if (!retval)
861 dev->options.audio_input = audio->index;
862
863 return retval;
864 }
865
866 static int vidioc_g_audio(struct file *file, void *private_data,
867 struct v4l2_audio *audio)
868 {
869 struct hdpvr_device *dev = video_drvdata(file);
870
871 audio->index = dev->options.audio_input;
872 audio->capability = V4L2_AUDCAP_STEREO;
873 strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
874 return 0;
875 }
876
877 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
878 {
879 struct hdpvr_device *dev =
880 container_of(ctrl->handler, struct hdpvr_device, hdl);
881
882 switch (ctrl->id) {
883 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
884 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
885 dev->video_bitrate->val >= dev->video_bitrate_peak->val)
886 dev->video_bitrate_peak->val =
887 dev->video_bitrate->val + 100000;
888 break;
889 }
890 return 0;
891 }
892
893 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
894 {
895 struct hdpvr_device *dev =
896 container_of(ctrl->handler, struct hdpvr_device, hdl);
897 struct hdpvr_options *opt = &dev->options;
898 int ret = -EINVAL;
899
900 switch (ctrl->id) {
901 case V4L2_CID_BRIGHTNESS:
902 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
903 if (ret)
904 break;
905 dev->options.brightness = ctrl->val;
906 return 0;
907 case V4L2_CID_CONTRAST:
908 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
909 if (ret)
910 break;
911 dev->options.contrast = ctrl->val;
912 return 0;
913 case V4L2_CID_SATURATION:
914 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
915 if (ret)
916 break;
917 dev->options.saturation = ctrl->val;
918 return 0;
919 case V4L2_CID_HUE:
920 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
921 if (ret)
922 break;
923 dev->options.hue = ctrl->val;
924 return 0;
925 case V4L2_CID_SHARPNESS:
926 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
927 if (ret)
928 break;
929 dev->options.sharpness = ctrl->val;
930 return 0;
931 case V4L2_CID_MPEG_AUDIO_ENCODING:
932 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
933 opt->audio_codec = ctrl->val;
934 return hdpvr_set_audio(dev, opt->audio_input + 1,
935 opt->audio_codec);
936 }
937 return 0;
938 case V4L2_CID_MPEG_VIDEO_ENCODING:
939 return 0;
940 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
941 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
942 /* opt->gop_mode |= 0x2; */
943 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
944 /* opt->gop_mode); */
945 /* } */
946 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
947 /* opt->gop_mode &= ~0x2; */
948 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
949 /* opt->gop_mode); */
950 /* } */
951 /* break; */
952 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
953 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
954 uint bitrate = dev->video_bitrate->val / 100000;
955
956 if (ctrl->is_new) {
957 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
958 opt->bitrate_mode = HDPVR_CONSTANT;
959 else
960 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
961 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
962 opt->bitrate_mode);
963 v4l2_ctrl_activate(dev->video_bitrate_peak,
964 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
965 }
966
967 if (dev->video_bitrate_peak->is_new ||
968 dev->video_bitrate->is_new) {
969 opt->bitrate = bitrate;
970 opt->peak_bitrate = peak_bitrate;
971 hdpvr_set_bitrate(dev);
972 }
973 return 0;
974 }
975 case V4L2_CID_MPEG_STREAM_TYPE:
976 return 0;
977 default:
978 break;
979 }
980 return ret;
981 }
982
983 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
984 struct v4l2_fmtdesc *f)
985 {
986 if (f->index != 0)
987 return -EINVAL;
988
989 f->pixelformat = V4L2_PIX_FMT_MPEG;
990
991 return 0;
992 }
993
994 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
995 struct v4l2_format *f)
996 {
997 struct hdpvr_device *dev = video_drvdata(file);
998 struct hdpvr_fh *fh = _fh;
999 int ret;
1000
1001 /*
1002 * The original driver would always returns the current detected
1003 * resolution as the format (and EFAULT if it couldn't be detected).
1004 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1005 * better way of doing this, but to stay compatible with existing
1006 * applications we assume legacy mode every time an application opens
1007 * the device. Only if one of the new DV_TIMINGS ioctls is called
1008 * will the filehandle go into 'normal' mode where g_fmt returns the
1009 * last set format.
1010 */
1011 if (fh->legacy_mode) {
1012 struct hdpvr_video_info vid_info;
1013
1014 ret = get_video_info(dev, &vid_info);
1015 if (ret < 0)
1016 return ret;
1017 if (!vid_info.valid)
1018 return -EFAULT;
1019 f->fmt.pix.width = vid_info.width;
1020 f->fmt.pix.height = vid_info.height;
1021 } else {
1022 f->fmt.pix.width = dev->width;
1023 f->fmt.pix.height = dev->height;
1024 }
1025 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1026 f->fmt.pix.sizeimage = dev->bulk_in_size;
1027 f->fmt.pix.bytesperline = 0;
1028 if (f->fmt.pix.width == 720) {
1029 /* SDTV formats */
1030 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1031 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1032 } else {
1033 /* HDTV formats */
1034 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1035 f->fmt.pix.field = V4L2_FIELD_NONE;
1036 }
1037 return 0;
1038 }
1039
1040 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1041 struct v4l2_encoder_cmd *a)
1042 {
1043 struct hdpvr_device *dev = video_drvdata(filp);
1044 int res = 0;
1045
1046 mutex_lock(&dev->io_mutex);
1047 a->flags = 0;
1048
1049 switch (a->cmd) {
1050 case V4L2_ENC_CMD_START:
1051 if (dev->owner && filp->private_data != dev->owner) {
1052 res = -EBUSY;
1053 break;
1054 }
1055 if (dev->status == STATUS_STREAMING)
1056 break;
1057 res = hdpvr_start_streaming(dev);
1058 if (!res)
1059 dev->owner = filp->private_data;
1060 else
1061 dev->status = STATUS_IDLE;
1062 break;
1063 case V4L2_ENC_CMD_STOP:
1064 if (dev->owner && filp->private_data != dev->owner) {
1065 res = -EBUSY;
1066 break;
1067 }
1068 if (dev->status == STATUS_IDLE)
1069 break;
1070 res = hdpvr_stop_streaming(dev);
1071 if (!res)
1072 dev->owner = NULL;
1073 break;
1074 default:
1075 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1076 "Unsupported encoder cmd %d\n", a->cmd);
1077 res = -EINVAL;
1078 break;
1079 }
1080
1081 mutex_unlock(&dev->io_mutex);
1082 return res;
1083 }
1084
1085 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1086 struct v4l2_encoder_cmd *a)
1087 {
1088 a->flags = 0;
1089 switch (a->cmd) {
1090 case V4L2_ENC_CMD_START:
1091 case V4L2_ENC_CMD_STOP:
1092 return 0;
1093 default:
1094 return -EINVAL;
1095 }
1096 }
1097
1098 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1099 .vidioc_querycap = vidioc_querycap,
1100 .vidioc_s_std = vidioc_s_std,
1101 .vidioc_g_std = vidioc_g_std,
1102 .vidioc_querystd = vidioc_querystd,
1103 .vidioc_s_dv_timings = vidioc_s_dv_timings,
1104 .vidioc_g_dv_timings = vidioc_g_dv_timings,
1105 .vidioc_query_dv_timings= vidioc_query_dv_timings,
1106 .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1107 .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
1108 .vidioc_enum_input = vidioc_enum_input,
1109 .vidioc_g_input = vidioc_g_input,
1110 .vidioc_s_input = vidioc_s_input,
1111 .vidioc_enumaudio = vidioc_enumaudio,
1112 .vidioc_g_audio = vidioc_g_audio,
1113 .vidioc_s_audio = vidioc_s_audio,
1114 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1115 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1116 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1117 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1118 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1119 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1120 .vidioc_log_status = v4l2_ctrl_log_status,
1121 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1122 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1123 };
1124
1125 static void hdpvr_device_release(struct video_device *vdev)
1126 {
1127 struct hdpvr_device *dev = video_get_drvdata(vdev);
1128
1129 hdpvr_delete(dev);
1130 flush_work(&dev->worker);
1131
1132 v4l2_device_unregister(&dev->v4l2_dev);
1133 v4l2_ctrl_handler_free(&dev->hdl);
1134
1135 /* deregister I2C adapter */
1136 #if IS_ENABLED(CONFIG_I2C)
1137 mutex_lock(&dev->i2c_mutex);
1138 i2c_del_adapter(&dev->i2c_adapter);
1139 mutex_unlock(&dev->i2c_mutex);
1140 #endif /* CONFIG_I2C */
1141
1142 kfree(dev->usbc_buf);
1143 kfree(dev);
1144 }
1145
1146 static const struct video_device hdpvr_video_template = {
1147 .fops = &hdpvr_fops,
1148 .release = hdpvr_device_release,
1149 .ioctl_ops = &hdpvr_ioctl_ops,
1150 .tvnorms = V4L2_STD_ALL,
1151 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
1152 V4L2_CAP_READWRITE,
1153 };
1154
1155 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1156 .try_ctrl = hdpvr_try_ctrl,
1157 .s_ctrl = hdpvr_s_ctrl,
1158 };
1159
1160 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1161 int devnum)
1162 {
1163 struct v4l2_ctrl_handler *hdl = &dev->hdl;
1164 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1165 int res;
1166
1167 // initialize dev->worker
1168 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
1169
1170 dev->cur_std = V4L2_STD_525_60;
1171 dev->width = 720;
1172 dev->height = 480;
1173 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1174 v4l2_ctrl_handler_init(hdl, 11);
1175 if (dev->fw_ver > 0x15) {
1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1177 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1179 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1181 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1182 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1183 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1184 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1185 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1186 } else {
1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1190 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1191 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1192 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1193 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1194 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1195 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1196 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1197 }
1198
1199 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1200 V4L2_CID_MPEG_STREAM_TYPE,
1201 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1202 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1203 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1204 V4L2_CID_MPEG_AUDIO_ENCODING,
1205 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1206 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1207 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1208 V4L2_CID_MPEG_VIDEO_ENCODING,
1209 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1210 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1211
1212 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1213 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1214 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1215 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1216
1217 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1218 V4L2_CID_MPEG_VIDEO_BITRATE,
1219 1000000, 13500000, 100000, 6500000);
1220 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1221 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1222 1100000, 20200000, 100000, 9000000);
1223 dev->v4l2_dev.ctrl_handler = hdl;
1224 if (hdl->error) {
1225 res = hdl->error;
1226 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1227 goto error;
1228 }
1229 v4l2_ctrl_cluster(3, &dev->video_mode);
1230 res = v4l2_ctrl_handler_setup(hdl);
1231 if (res < 0) {
1232 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1233 goto error;
1234 }
1235
1236 /* setup and register video device */
1237 dev->video_dev = hdpvr_video_template;
1238 strscpy(dev->video_dev.name, "Hauppauge HD PVR",
1239 sizeof(dev->video_dev.name));
1240 dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1241 video_set_drvdata(&dev->video_dev, dev);
1242
1243 res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, devnum);
1244 if (res < 0) {
1245 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1246 goto error;
1247 }
1248
1249 return 0;
1250 error:
1251 v4l2_ctrl_handler_free(hdl);
1252 return res;
1253 }
Kernel DRM miscellaneous fixes and cross-tree changes