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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / media / usb / hdpvr / hdpvr-video.c
blob77c3d331ff31491e7bb86417d29ab4763c8535dc
1 /*
2 * Hauppauge HD PVR USB driver - video 4 linux 2 interface
3 *
4 * Copyright (C) 2008 Janne Grunau (j@jannau.net)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
9 *
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/errno.h>
14 #include <linux/init.h>
15 #include <linux/slab.h>
16 #include <linux/module.h>
17 #include <linux/uaccess.h>
18 #include <linux/usb.h>
19 #include <linux/mutex.h>
20 #include <linux/workqueue.h>
21
22 #include <linux/videodev2.h>
23 #include <linux/v4l2-dv-timings.h>
24 #include <media/v4l2-dev.h>
25 #include <media/v4l2-common.h>
26 #include <media/v4l2-dv-timings.h>
27 #include <media/v4l2-ioctl.h>
28 #include <media/v4l2-event.h>
29 #include "hdpvr.h"
30
31 #define BULK_URB_TIMEOUT 90 /* 0.09 seconds */
32
33 #define print_buffer_status() { \
34 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
35 "%s:%d buffer stat: %d free, %d proc\n", \
36 __func__, __LINE__, \
37 list_size(&dev->free_buff_list), \
38 list_size(&dev->rec_buff_list)); }
39
40 static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
41 V4L2_DV_BT_CEA_720X480I59_94,
42 V4L2_DV_BT_CEA_720X576I50,
43 V4L2_DV_BT_CEA_720X480P59_94,
44 V4L2_DV_BT_CEA_720X576P50,
45 V4L2_DV_BT_CEA_1280X720P50,
46 V4L2_DV_BT_CEA_1280X720P60,
47 V4L2_DV_BT_CEA_1920X1080I50,
48 V4L2_DV_BT_CEA_1920X1080I60,
49 };
50
51 /* Use 480i59 as the default timings */
52 #define HDPVR_DEF_DV_TIMINGS_IDX (0)
53
54 struct hdpvr_fh {
55 struct v4l2_fh fh;
56 bool legacy_mode;
57 };
58
59 static uint list_size(struct list_head *list)
60 {
61 struct list_head *tmp;
62 uint count = 0;
63
64 list_for_each(tmp, list) {
65 count++;
66 }
67
68 return count;
69 }
70
71 /*=========================================================================*/
72 /* urb callback */
73 static void hdpvr_read_bulk_callback(struct urb *urb)
74 {
75 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
76 struct hdpvr_device *dev = buf->dev;
77
78 /* marking buffer as received and wake waiting */
79 buf->status = BUFSTAT_READY;
80 wake_up_interruptible(&dev->wait_data);
81 }
82
83 /*=========================================================================*/
84 /* buffer bits */
85
86 /* function expects dev->io_mutex to be hold by caller */
87 int hdpvr_cancel_queue(struct hdpvr_device *dev)
88 {
89 struct hdpvr_buffer *buf;
90
91 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
92 usb_kill_urb(buf->urb);
93 buf->status = BUFSTAT_AVAILABLE;
94 }
95
96 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
97
98 return 0;
99 }
100
101 static int hdpvr_free_queue(struct list_head *q)
102 {
103 struct list_head *tmp;
104 struct list_head *p;
105 struct hdpvr_buffer *buf;
106 struct urb *urb;
107
108 for (p = q->next; p != q;) {
109 buf = list_entry(p, struct hdpvr_buffer, buff_list);
110
111 urb = buf->urb;
112 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
113 urb->transfer_buffer, urb->transfer_dma);
114 usb_free_urb(urb);
115 tmp = p->next;
116 list_del(p);
117 kfree(buf);
118 p = tmp;
119 }
120
121 return 0;
122 }
123
124 /* function expects dev->io_mutex to be hold by caller */
125 int hdpvr_free_buffers(struct hdpvr_device *dev)
126 {
127 hdpvr_cancel_queue(dev);
128
129 hdpvr_free_queue(&dev->free_buff_list);
130 hdpvr_free_queue(&dev->rec_buff_list);
131
132 return 0;
133 }
134
135 /* function expects dev->io_mutex to be hold by caller */
136 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
137 {
138 uint i;
139 int retval = -ENOMEM;
140 u8 *mem;
141 struct hdpvr_buffer *buf;
142 struct urb *urb;
143
144 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
145 "allocating %u buffers\n", count);
146
147 for (i = 0; i < count; i++) {
148
149 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
150 if (!buf) {
151 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
152 goto exit;
153 }
154 buf->dev = dev;
155
156 urb = usb_alloc_urb(0, GFP_KERNEL);
157 if (!urb)
158 goto exit_urb;
159 buf->urb = urb;
160
161 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
162 &urb->transfer_dma);
163 if (!mem) {
164 v4l2_err(&dev->v4l2_dev,
165 "cannot allocate usb transfer buffer\n");
166 goto exit_urb_buffer;
167 }
168
169 usb_fill_bulk_urb(buf->urb, dev->udev,
170 usb_rcvbulkpipe(dev->udev,
171 dev->bulk_in_endpointAddr),
172 mem, dev->bulk_in_size,
173 hdpvr_read_bulk_callback, buf);
174
175 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
176 buf->status = BUFSTAT_AVAILABLE;
177 list_add_tail(&buf->buff_list, &dev->free_buff_list);
178 }
179 return 0;
180 exit_urb_buffer:
181 usb_free_urb(urb);
182 exit_urb:
183 kfree(buf);
184 exit:
185 hdpvr_free_buffers(dev);
186 return retval;
187 }
188
189 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
190 {
191 struct hdpvr_buffer *buf;
192 struct urb *urb;
193 int ret = 0, err_count = 0;
194
195 mutex_lock(&dev->io_mutex);
196
197 while (dev->status == STATUS_STREAMING &&
198 !list_empty(&dev->free_buff_list)) {
199
200 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
201 buff_list);
202 if (buf->status != BUFSTAT_AVAILABLE) {
203 v4l2_err(&dev->v4l2_dev,
204 "buffer not marked as available\n");
205 ret = -EFAULT;
206 goto err;
207 }
208
209 urb = buf->urb;
210 urb->status = 0;
211 urb->actual_length = 0;
212 ret = usb_submit_urb(urb, GFP_KERNEL);
213 if (ret) {
214 v4l2_err(&dev->v4l2_dev,
215 "usb_submit_urb in %s returned %d\n",
216 __func__, ret);
217 if (++err_count > 2)
218 break;
219 continue;
220 }
221 buf->status = BUFSTAT_INPROGRESS;
222 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
223 }
224 err:
225 print_buffer_status();
226 mutex_unlock(&dev->io_mutex);
227 return ret;
228 }
229
230 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
231 {
232 struct hdpvr_buffer *buf;
233
234 mutex_lock(&dev->io_mutex);
235
236 if (list_empty(&dev->rec_buff_list)) {
237 mutex_unlock(&dev->io_mutex);
238 return NULL;
239 }
240
241 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
242 buff_list);
243 mutex_unlock(&dev->io_mutex);
244
245 return buf;
246 }
247
248 static void hdpvr_transmit_buffers(struct work_struct *work)
249 {
250 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
251 worker);
252
253 while (dev->status == STATUS_STREAMING) {
254
255 if (hdpvr_submit_buffers(dev)) {
256 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
257 goto error;
258 }
259 if (wait_event_interruptible(dev->wait_buffer,
260 !list_empty(&dev->free_buff_list) ||
261 dev->status != STATUS_STREAMING))
262 goto error;
263 }
264
265 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
266 "transmit worker exited\n");
267 return;
268 error:
269 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
270 "transmit buffers errored\n");
271 dev->status = STATUS_ERROR;
272 }
273
274 /* function expects dev->io_mutex to be hold by caller */
275 static int hdpvr_start_streaming(struct hdpvr_device *dev)
276 {
277 int ret;
278 struct hdpvr_video_info vidinf;
279
280 if (dev->status == STATUS_STREAMING)
281 return 0;
282 if (dev->status != STATUS_IDLE)
283 return -EAGAIN;
284
285 ret = get_video_info(dev, &vidinf);
286 if (ret < 0)
287 return ret;
288
289 if (!vidinf.valid) {
290 msleep(250);
291 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
292 "no video signal at input %d\n", dev->options.video_input);
293 return -EAGAIN;
294 }
295
296 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
297 "video signal: %dx%d@%dhz\n", vidinf.width,
298 vidinf.height, vidinf.fps);
299
300 /* start streaming 2 request */
301 ret = usb_control_msg(dev->udev,
302 usb_sndctrlpipe(dev->udev, 0),
303 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
304 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
305 "encoder start control request returned %d\n", ret);
306 if (ret < 0)
307 return ret;
308
309 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
310 if (ret)
311 return ret;
312
313 dev->status = STATUS_STREAMING;
314
315 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
316 schedule_work(&dev->worker);
317
318 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
319 "streaming started\n");
320
321 return 0;
322 }
323
324
325 /* function expects dev->io_mutex to be hold by caller */
326 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
327 {
328 int actual_length;
329 uint c = 0;
330 u8 *buf;
331
332 if (dev->status == STATUS_IDLE)
333 return 0;
334 else if (dev->status != STATUS_STREAMING)
335 return -EAGAIN;
336
337 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
338 if (!buf)
339 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n");
340
341 dev->status = STATUS_SHUTTING_DOWN;
342 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
343 mutex_unlock(&dev->io_mutex);
344
345 wake_up_interruptible(&dev->wait_buffer);
346 msleep(50);
347
348 flush_work(&dev->worker);
349
350 mutex_lock(&dev->io_mutex);
351 /* kill the still outstanding urbs */
352 hdpvr_cancel_queue(dev);
353
354 /* emptying the device buffer beforeshutting it down */
355 while (buf && ++c < 500 &&
356 !usb_bulk_msg(dev->udev,
357 usb_rcvbulkpipe(dev->udev,
358 dev->bulk_in_endpointAddr),
359 buf, dev->bulk_in_size, &actual_length,
360 BULK_URB_TIMEOUT)) {
361 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
362 "%2d: got %d bytes\n", c, actual_length);
363 }
364 kfree(buf);
365 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
366 "used %d urbs to empty device buffers\n", c-1);
367 msleep(10);
368
369 dev->status = STATUS_IDLE;
370
371 return 0;
372 }
373
374
375 /*=======================================================================*/
376 /*
377 * video 4 linux 2 file operations
378 */
379
380 static int hdpvr_open(struct file *file)
381 {
382 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
383
384 if (fh == NULL)
385 return -ENOMEM;
386 fh->legacy_mode = true;
387 v4l2_fh_init(&fh->fh, video_devdata(file));
388 v4l2_fh_add(&fh->fh);
389 file->private_data = fh;
390 return 0;
391 }
392
393 static int hdpvr_release(struct file *file)
394 {
395 struct hdpvr_device *dev = video_drvdata(file);
396
397 mutex_lock(&dev->io_mutex);
398 if (file->private_data == dev->owner) {
399 hdpvr_stop_streaming(dev);
400 dev->owner = NULL;
401 }
402 mutex_unlock(&dev->io_mutex);
403
404 return v4l2_fh_release(file);
405 }
406
407 /*
408 * hdpvr_v4l2_read()
409 * will allocate buffers when called for the first time
410 */
411 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
412 loff_t *pos)
413 {
414 struct hdpvr_device *dev = video_drvdata(file);
415 struct hdpvr_buffer *buf = NULL;
416 struct urb *urb;
417 unsigned int ret = 0;
418 int rem, cnt;
419
420 if (*pos)
421 return -ESPIPE;
422
423 mutex_lock(&dev->io_mutex);
424 if (dev->status == STATUS_IDLE) {
425 if (hdpvr_start_streaming(dev)) {
426 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
427 "start_streaming failed\n");
428 ret = -EIO;
429 msleep(200);
430 dev->status = STATUS_IDLE;
431 mutex_unlock(&dev->io_mutex);
432 goto err;
433 }
434 dev->owner = file->private_data;
435 print_buffer_status();
436 }
437 mutex_unlock(&dev->io_mutex);
438
439 /* wait for the first buffer */
440 if (!(file->f_flags & O_NONBLOCK)) {
441 if (wait_event_interruptible(dev->wait_data,
442 hdpvr_get_next_buffer(dev)))
443 return -ERESTARTSYS;
444 }
445
446 buf = hdpvr_get_next_buffer(dev);
447
448 while (count > 0 && buf) {
449
450 if (buf->status != BUFSTAT_READY &&
451 dev->status != STATUS_DISCONNECTED) {
452 int err;
453 /* return nonblocking */
454 if (file->f_flags & O_NONBLOCK) {
455 if (!ret)
456 ret = -EAGAIN;
457 goto err;
458 }
459
460 err = wait_event_interruptible_timeout(dev->wait_data,
461 buf->status == BUFSTAT_READY,
462 msecs_to_jiffies(1000));
463 if (err < 0) {
464 ret = err;
465 goto err;
466 }
467 if (!err) {
468 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
469 "timeout: restart streaming\n");
470 hdpvr_stop_streaming(dev);
471 msecs_to_jiffies(4000);
472 err = hdpvr_start_streaming(dev);
473 if (err) {
474 ret = err;
475 goto err;
476 }
477 }
478 }
479
480 if (buf->status != BUFSTAT_READY)
481 break;
482
483 /* set remaining bytes to copy */
484 urb = buf->urb;
485 rem = urb->actual_length - buf->pos;
486 cnt = rem > count ? count : rem;
487
488 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
489 cnt)) {
490 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
491 if (!ret)
492 ret = -EFAULT;
493 goto err;
494 }
495
496 buf->pos += cnt;
497 count -= cnt;
498 buffer += cnt;
499 ret += cnt;
500
501 /* finished, take next buffer */
502 if (buf->pos == urb->actual_length) {
503 mutex_lock(&dev->io_mutex);
504 buf->pos = 0;
505 buf->status = BUFSTAT_AVAILABLE;
506
507 list_move_tail(&buf->buff_list, &dev->free_buff_list);
508
509 print_buffer_status();
510
511 mutex_unlock(&dev->io_mutex);
512
513 wake_up_interruptible(&dev->wait_buffer);
514
515 buf = hdpvr_get_next_buffer(dev);
516 }
517 }
518 err:
519 if (!ret && !buf)
520 ret = -EAGAIN;
521 return ret;
522 }
523
524 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait)
525 {
526 __poll_t req_events = poll_requested_events(wait);
527 struct hdpvr_buffer *buf = NULL;
528 struct hdpvr_device *dev = video_drvdata(filp);
529 __poll_t mask = v4l2_ctrl_poll(filp, wait);
530
531 if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
532 return mask;
533
534 mutex_lock(&dev->io_mutex);
535
536 if (dev->status == STATUS_IDLE) {
537 if (hdpvr_start_streaming(dev)) {
538 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
539 "start_streaming failed\n");
540 dev->status = STATUS_IDLE;
541 } else {
542 dev->owner = filp->private_data;
543 }
544
545 print_buffer_status();
546 }
547 mutex_unlock(&dev->io_mutex);
548
549 buf = hdpvr_get_next_buffer(dev);
550 /* only wait if no data is available */
551 if (!buf || buf->status != BUFSTAT_READY) {
552 poll_wait(filp, &dev->wait_data, wait);
553 buf = hdpvr_get_next_buffer(dev);
554 }
555 if (buf && buf->status == BUFSTAT_READY)
556 mask |= EPOLLIN | EPOLLRDNORM;
557
558 return mask;
559 }
560
561
562 static const struct v4l2_file_operations hdpvr_fops = {
563 .owner = THIS_MODULE,
564 .open = hdpvr_open,
565 .release = hdpvr_release,
566 .read = hdpvr_read,
567 .poll = hdpvr_poll,
568 .unlocked_ioctl = video_ioctl2,
569 };
570
571 /*=======================================================================*/
572 /*
573 * V4L2 ioctl handling
574 */
575
576 static int vidioc_querycap(struct file *file, void *priv,
577 struct v4l2_capability *cap)
578 {
579 struct hdpvr_device *dev = video_drvdata(file);
580
581 strcpy(cap->driver, "hdpvr");
582 strcpy(cap->card, "Hauppauge HD PVR");
583 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
584 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
585 V4L2_CAP_READWRITE;
586 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
587 return 0;
588 }
589
590 static int vidioc_s_std(struct file *file, void *_fh,
591 v4l2_std_id std)
592 {
593 struct hdpvr_device *dev = video_drvdata(file);
594 struct hdpvr_fh *fh = _fh;
595 u8 std_type = 1;
596
597 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
598 return -ENODATA;
599 if (dev->status != STATUS_IDLE)
600 return -EBUSY;
601 if (std & V4L2_STD_525_60)
602 std_type = 0;
603 dev->cur_std = std;
604 dev->width = 720;
605 dev->height = std_type ? 576 : 480;
606
607 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
608 }
609
610 static int vidioc_g_std(struct file *file, void *_fh,
611 v4l2_std_id *std)
612 {
613 struct hdpvr_device *dev = video_drvdata(file);
614 struct hdpvr_fh *fh = _fh;
615
616 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
617 return -ENODATA;
618 *std = dev->cur_std;
619 return 0;
620 }
621
622 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
623 {
624 struct hdpvr_device *dev = video_drvdata(file);
625 struct hdpvr_video_info vid_info;
626 struct hdpvr_fh *fh = _fh;
627 int ret;
628
629 *a = V4L2_STD_UNKNOWN;
630 if (dev->options.video_input == HDPVR_COMPONENT)
631 return fh->legacy_mode ? 0 : -ENODATA;
632 ret = get_video_info(dev, &vid_info);
633 if (vid_info.valid && vid_info.width == 720 &&
634 (vid_info.height == 480 || vid_info.height == 576)) {
635 *a = (vid_info.height == 480) ?
636 V4L2_STD_525_60 : V4L2_STD_625_50;
637 }
638 return ret;
639 }
640
641 static int vidioc_s_dv_timings(struct file *file, void *_fh,
642 struct v4l2_dv_timings *timings)
643 {
644 struct hdpvr_device *dev = video_drvdata(file);
645 struct hdpvr_fh *fh = _fh;
646 int i;
647
648 fh->legacy_mode = false;
649 if (dev->options.video_input)
650 return -ENODATA;
651 if (dev->status != STATUS_IDLE)
652 return -EBUSY;
653 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
654 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
655 break;
656 if (i == ARRAY_SIZE(hdpvr_dv_timings))
657 return -EINVAL;
658 dev->cur_dv_timings = hdpvr_dv_timings[i];
659 dev->width = hdpvr_dv_timings[i].bt.width;
660 dev->height = hdpvr_dv_timings[i].bt.height;
661 return 0;
662 }
663
664 static int vidioc_g_dv_timings(struct file *file, void *_fh,
665 struct v4l2_dv_timings *timings)
666 {
667 struct hdpvr_device *dev = video_drvdata(file);
668 struct hdpvr_fh *fh = _fh;
669
670 fh->legacy_mode = false;
671 if (dev->options.video_input)
672 return -ENODATA;
673 *timings = dev->cur_dv_timings;
674 return 0;
675 }
676
677 static int vidioc_query_dv_timings(struct file *file, void *_fh,
678 struct v4l2_dv_timings *timings)
679 {
680 struct hdpvr_device *dev = video_drvdata(file);
681 struct hdpvr_fh *fh = _fh;
682 struct hdpvr_video_info vid_info;
683 bool interlaced;
684 int ret = 0;
685 int i;
686
687 fh->legacy_mode = false;
688 if (dev->options.video_input)
689 return -ENODATA;
690 ret = get_video_info(dev, &vid_info);
691 if (ret)
692 return ret;
693 if (!vid_info.valid)
694 return -ENOLCK;
695 interlaced = vid_info.fps <= 30;
696 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
697 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
698 unsigned hsize;
699 unsigned vsize;
700 unsigned fps;
701
702 hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
703 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
704 fps = (unsigned)bt->pixelclock / (hsize * vsize);
705 if (bt->width != vid_info.width ||
706 bt->height != vid_info.height ||
707 bt->interlaced != interlaced ||
708 (fps != vid_info.fps && fps + 1 != vid_info.fps))
709 continue;
710 *timings = hdpvr_dv_timings[i];
711 break;
712 }
713 if (i == ARRAY_SIZE(hdpvr_dv_timings))
714 ret = -ERANGE;
715
716 return ret;
717 }
718
719 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
720 struct v4l2_enum_dv_timings *timings)
721 {
722 struct hdpvr_device *dev = video_drvdata(file);
723 struct hdpvr_fh *fh = _fh;
724
725 fh->legacy_mode = false;
726 memset(timings->reserved, 0, sizeof(timings->reserved));
727 if (dev->options.video_input)
728 return -ENODATA;
729 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
730 return -EINVAL;
731 timings->timings = hdpvr_dv_timings[timings->index];
732 return 0;
733 }
734
735 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
736 struct v4l2_dv_timings_cap *cap)
737 {
738 struct hdpvr_device *dev = video_drvdata(file);
739 struct hdpvr_fh *fh = _fh;
740
741 fh->legacy_mode = false;
742 if (dev->options.video_input)
743 return -ENODATA;
744 cap->type = V4L2_DV_BT_656_1120;
745 cap->bt.min_width = 720;
746 cap->bt.max_width = 1920;
747 cap->bt.min_height = 480;
748 cap->bt.max_height = 1080;
749 cap->bt.min_pixelclock = 27000000;
750 cap->bt.max_pixelclock = 74250000;
751 cap->bt.standards = V4L2_DV_BT_STD_CEA861;
752 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
753 return 0;
754 }
755
756 static const char *iname[] = {
757 [HDPVR_COMPONENT] = "Component",
758 [HDPVR_SVIDEO] = "S-Video",
759 [HDPVR_COMPOSITE] = "Composite",
760 };
761
762 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
763 {
764 unsigned int n;
765
766 n = i->index;
767 if (n >= HDPVR_VIDEO_INPUTS)
768 return -EINVAL;
769
770 i->type = V4L2_INPUT_TYPE_CAMERA;
771
772 strncpy(i->name, iname[n], sizeof(i->name) - 1);
773 i->name[sizeof(i->name) - 1] = '\0';
774
775 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
776
777 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
778 i->std = n ? V4L2_STD_ALL : 0;
779
780 return 0;
781 }
782
783 static int vidioc_s_input(struct file *file, void *_fh,
784 unsigned int index)
785 {
786 struct hdpvr_device *dev = video_drvdata(file);
787 int retval;
788
789 if (index >= HDPVR_VIDEO_INPUTS)
790 return -EINVAL;
791
792 if (dev->status != STATUS_IDLE)
793 return -EBUSY;
794
795 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
796 if (!retval) {
797 dev->options.video_input = index;
798 /*
799 * Unfortunately gstreamer calls ENUMSTD and bails out if it
800 * won't find any formats, even though component input is
801 * selected. This means that we have to leave tvnorms at
802 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
803 * tvnorms is set at the device node level and not at the
804 * filehandle level.
805 *
806 * Comment this out for now, but if the legacy mode can be
807 * removed in the future, then this code should be enabled
808 * again.
809 dev->video_dev.tvnorms =
810 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
811 */
812 }
813
814 return retval;
815 }
816
817 static int vidioc_g_input(struct file *file, void *private_data,
818 unsigned int *index)
819 {
820 struct hdpvr_device *dev = video_drvdata(file);
821
822 *index = dev->options.video_input;
823 return 0;
824 }
825
826
827 static const char *audio_iname[] = {
828 [HDPVR_RCA_FRONT] = "RCA front",
829 [HDPVR_RCA_BACK] = "RCA back",
830 [HDPVR_SPDIF] = "SPDIF",
831 };
832
833 static int vidioc_enumaudio(struct file *file, void *priv,
834 struct v4l2_audio *audio)
835 {
836 unsigned int n;
837
838 n = audio->index;
839 if (n >= HDPVR_AUDIO_INPUTS)
840 return -EINVAL;
841
842 audio->capability = V4L2_AUDCAP_STEREO;
843
844 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
845 audio->name[sizeof(audio->name) - 1] = '\0';
846
847 return 0;
848 }
849
850 static int vidioc_s_audio(struct file *file, void *private_data,
851 const struct v4l2_audio *audio)
852 {
853 struct hdpvr_device *dev = video_drvdata(file);
854 int retval;
855
856 if (audio->index >= HDPVR_AUDIO_INPUTS)
857 return -EINVAL;
858
859 if (dev->status != STATUS_IDLE)
860 return -EBUSY;
861
862 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
863 if (!retval)
864 dev->options.audio_input = audio->index;
865
866 return retval;
867 }
868
869 static int vidioc_g_audio(struct file *file, void *private_data,
870 struct v4l2_audio *audio)
871 {
872 struct hdpvr_device *dev = video_drvdata(file);
873
874 audio->index = dev->options.audio_input;
875 audio->capability = V4L2_AUDCAP_STEREO;
876 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
877 audio->name[sizeof(audio->name) - 1] = '\0';
878 return 0;
879 }
880
881 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
882 {
883 struct hdpvr_device *dev =
884 container_of(ctrl->handler, struct hdpvr_device, hdl);
885
886 switch (ctrl->id) {
887 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
888 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
889 dev->video_bitrate->val >= dev->video_bitrate_peak->val)
890 dev->video_bitrate_peak->val =
891 dev->video_bitrate->val + 100000;
892 break;
893 }
894 return 0;
895 }
896
897 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
898 {
899 struct hdpvr_device *dev =
900 container_of(ctrl->handler, struct hdpvr_device, hdl);
901 struct hdpvr_options *opt = &dev->options;
902 int ret = -EINVAL;
903
904 switch (ctrl->id) {
905 case V4L2_CID_BRIGHTNESS:
906 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
907 if (ret)
908 break;
909 dev->options.brightness = ctrl->val;
910 return 0;
911 case V4L2_CID_CONTRAST:
912 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
913 if (ret)
914 break;
915 dev->options.contrast = ctrl->val;
916 return 0;
917 case V4L2_CID_SATURATION:
918 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
919 if (ret)
920 break;
921 dev->options.saturation = ctrl->val;
922 return 0;
923 case V4L2_CID_HUE:
924 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
925 if (ret)
926 break;
927 dev->options.hue = ctrl->val;
928 return 0;
929 case V4L2_CID_SHARPNESS:
930 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
931 if (ret)
932 break;
933 dev->options.sharpness = ctrl->val;
934 return 0;
935 case V4L2_CID_MPEG_AUDIO_ENCODING:
936 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
937 opt->audio_codec = ctrl->val;
938 return hdpvr_set_audio(dev, opt->audio_input + 1,
939 opt->audio_codec);
940 }
941 return 0;
942 case V4L2_CID_MPEG_VIDEO_ENCODING:
943 return 0;
944 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
945 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
946 /* opt->gop_mode |= 0x2; */
947 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
948 /* opt->gop_mode); */
949 /* } */
950 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
951 /* opt->gop_mode &= ~0x2; */
952 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
953 /* opt->gop_mode); */
954 /* } */
955 /* break; */
956 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
957 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
958 uint bitrate = dev->video_bitrate->val / 100000;
959
960 if (ctrl->is_new) {
961 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
962 opt->bitrate_mode = HDPVR_CONSTANT;
963 else
964 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
965 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
966 opt->bitrate_mode);
967 v4l2_ctrl_activate(dev->video_bitrate_peak,
968 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
969 }
970
971 if (dev->video_bitrate_peak->is_new ||
972 dev->video_bitrate->is_new) {
973 opt->bitrate = bitrate;
974 opt->peak_bitrate = peak_bitrate;
975 hdpvr_set_bitrate(dev);
976 }
977 return 0;
978 }
979 case V4L2_CID_MPEG_STREAM_TYPE:
980 return 0;
981 default:
982 break;
983 }
984 return ret;
985 }
986
987 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
988 struct v4l2_fmtdesc *f)
989 {
990 if (f->index != 0)
991 return -EINVAL;
992
993 f->flags = V4L2_FMT_FLAG_COMPRESSED;
994 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
995 f->pixelformat = V4L2_PIX_FMT_MPEG;
996
997 return 0;
998 }
999
1000 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
1001 struct v4l2_format *f)
1002 {
1003 struct hdpvr_device *dev = video_drvdata(file);
1004 struct hdpvr_fh *fh = _fh;
1005 int ret;
1006
1007 /*
1008 * The original driver would always returns the current detected
1009 * resolution as the format (and EFAULT if it couldn't be detected).
1010 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1011 * better way of doing this, but to stay compatible with existing
1012 * applications we assume legacy mode every time an application opens
1013 * the device. Only if one of the new DV_TIMINGS ioctls is called
1014 * will the filehandle go into 'normal' mode where g_fmt returns the
1015 * last set format.
1016 */
1017 if (fh->legacy_mode) {
1018 struct hdpvr_video_info vid_info;
1019
1020 ret = get_video_info(dev, &vid_info);
1021 if (ret < 0)
1022 return ret;
1023 if (!vid_info.valid)
1024 return -EFAULT;
1025 f->fmt.pix.width = vid_info.width;
1026 f->fmt.pix.height = vid_info.height;
1027 } else {
1028 f->fmt.pix.width = dev->width;
1029 f->fmt.pix.height = dev->height;
1030 }
1031 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1032 f->fmt.pix.sizeimage = dev->bulk_in_size;
1033 f->fmt.pix.bytesperline = 0;
1034 if (f->fmt.pix.width == 720) {
1035 /* SDTV formats */
1036 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1037 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1038 } else {
1039 /* HDTV formats */
1040 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1041 f->fmt.pix.field = V4L2_FIELD_NONE;
1042 }
1043 return 0;
1044 }
1045
1046 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1047 struct v4l2_encoder_cmd *a)
1048 {
1049 struct hdpvr_device *dev = video_drvdata(filp);
1050 int res = 0;
1051
1052 mutex_lock(&dev->io_mutex);
1053 a->flags = 0;
1054
1055 switch (a->cmd) {
1056 case V4L2_ENC_CMD_START:
1057 if (dev->owner && filp->private_data != dev->owner) {
1058 res = -EBUSY;
1059 break;
1060 }
1061 if (dev->status == STATUS_STREAMING)
1062 break;
1063 res = hdpvr_start_streaming(dev);
1064 if (!res)
1065 dev->owner = filp->private_data;
1066 else
1067 dev->status = STATUS_IDLE;
1068 break;
1069 case V4L2_ENC_CMD_STOP:
1070 if (dev->owner && filp->private_data != dev->owner) {
1071 res = -EBUSY;
1072 break;
1073 }
1074 if (dev->status == STATUS_IDLE)
1075 break;
1076 res = hdpvr_stop_streaming(dev);
1077 if (!res)
1078 dev->owner = NULL;
1079 break;
1080 default:
1081 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1082 "Unsupported encoder cmd %d\n", a->cmd);
1083 res = -EINVAL;
1084 break;
1085 }
1086
1087 mutex_unlock(&dev->io_mutex);
1088 return res;
1089 }
1090
1091 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1092 struct v4l2_encoder_cmd *a)
1093 {
1094 a->flags = 0;
1095 switch (a->cmd) {
1096 case V4L2_ENC_CMD_START:
1097 case V4L2_ENC_CMD_STOP:
1098 return 0;
1099 default:
1100 return -EINVAL;
1101 }
1102 }
1103
1104 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1105 .vidioc_querycap = vidioc_querycap,
1106 .vidioc_s_std = vidioc_s_std,
1107 .vidioc_g_std = vidioc_g_std,
1108 .vidioc_querystd = vidioc_querystd,
1109 .vidioc_s_dv_timings = vidioc_s_dv_timings,
1110 .vidioc_g_dv_timings = vidioc_g_dv_timings,
1111 .vidioc_query_dv_timings= vidioc_query_dv_timings,
1112 .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1113 .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
1114 .vidioc_enum_input = vidioc_enum_input,
1115 .vidioc_g_input = vidioc_g_input,
1116 .vidioc_s_input = vidioc_s_input,
1117 .vidioc_enumaudio = vidioc_enumaudio,
1118 .vidioc_g_audio = vidioc_g_audio,
1119 .vidioc_s_audio = vidioc_s_audio,
1120 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1121 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1122 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1123 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1124 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1125 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1126 .vidioc_log_status = v4l2_ctrl_log_status,
1127 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1128 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1129 };
1130
1131 static void hdpvr_device_release(struct video_device *vdev)
1132 {
1133 struct hdpvr_device *dev = video_get_drvdata(vdev);
1134
1135 hdpvr_delete(dev);
1136 mutex_lock(&dev->io_mutex);
1137 flush_work(&dev->worker);
1138 mutex_unlock(&dev->io_mutex);
1139
1140 v4l2_device_unregister(&dev->v4l2_dev);
1141 v4l2_ctrl_handler_free(&dev->hdl);
1142
1143 /* deregister I2C adapter */
1144 #if IS_ENABLED(CONFIG_I2C)
1145 mutex_lock(&dev->i2c_mutex);
1146 i2c_del_adapter(&dev->i2c_adapter);
1147 mutex_unlock(&dev->i2c_mutex);
1148 #endif /* CONFIG_I2C */
1149
1150 kfree(dev->usbc_buf);
1151 kfree(dev);
1152 }
1153
1154 static const struct video_device hdpvr_video_template = {
1155 .fops = &hdpvr_fops,
1156 .release = hdpvr_device_release,
1157 .ioctl_ops = &hdpvr_ioctl_ops,
1158 .tvnorms = V4L2_STD_ALL,
1159 };
1160
1161 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1162 .try_ctrl = hdpvr_try_ctrl,
1163 .s_ctrl = hdpvr_s_ctrl,
1164 };
1165
1166 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1167 int devnum)
1168 {
1169 struct v4l2_ctrl_handler *hdl = &dev->hdl;
1170 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1171 int res;
1172
1173 dev->cur_std = V4L2_STD_525_60;
1174 dev->width = 720;
1175 dev->height = 480;
1176 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1177 v4l2_ctrl_handler_init(hdl, 11);
1178 if (dev->fw_ver > 0x15) {
1179 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1180 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1182 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1184 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1186 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1189 } else {
1190 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1191 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1192 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1193 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1194 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1195 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1196 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1197 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1198 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1199 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1200 }
1201
1202 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1203 V4L2_CID_MPEG_STREAM_TYPE,
1204 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1205 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1206 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1207 V4L2_CID_MPEG_AUDIO_ENCODING,
1208 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1209 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1210 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1211 V4L2_CID_MPEG_VIDEO_ENCODING,
1212 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1213 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1214
1215 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1216 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1217 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1218 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1219
1220 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1221 V4L2_CID_MPEG_VIDEO_BITRATE,
1222 1000000, 13500000, 100000, 6500000);
1223 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1224 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1225 1100000, 20200000, 100000, 9000000);
1226 dev->v4l2_dev.ctrl_handler = hdl;
1227 if (hdl->error) {
1228 res = hdl->error;
1229 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1230 goto error;
1231 }
1232 v4l2_ctrl_cluster(3, &dev->video_mode);
1233 res = v4l2_ctrl_handler_setup(hdl);
1234 if (res < 0) {
1235 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1236 goto error;
1237 }
1238
1239 /* setup and register video device */
1240 dev->video_dev = hdpvr_video_template;
1241 strcpy(dev->video_dev.name, "Hauppauge HD PVR");
1242 dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1243 video_set_drvdata(&dev->video_dev, dev);
1244
1245 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum);
1246 if (res < 0) {
1247 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1248 goto error;
1249 }
1250
1251 return 0;
1252 error:
1253 v4l2_ctrl_handler_free(hdl);
1254 return res;
1255 }
CRIS linux kernel tree