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Linux 3.11-rc3
[cris-mirror.git] / drivers / media / usb / hdpvr / hdpvr-video.c
blob4f8567aa99d8fb357f7337b66af092fa846caac2
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/kconfig.h>
14 #include <linux/errno.h>
15 #include <linux/init.h>
16 #include <linux/slab.h>
17 #include <linux/module.h>
18 #include <linux/uaccess.h>
19 #include <linux/usb.h>
20 #include <linux/mutex.h>
21 #include <linux/workqueue.h>
22
23 #include <linux/videodev2.h>
24 #include <linux/v4l2-dv-timings.h>
25 #include <media/v4l2-dev.h>
26 #include <media/v4l2-common.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 /* bufffer 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 v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
159 goto exit_urb;
160 }
161 buf->urb = urb;
162
163 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
164 &urb->transfer_dma);
165 if (!mem) {
166 v4l2_err(&dev->v4l2_dev,
167 "cannot allocate usb transfer buffer\n");
168 goto exit_urb_buffer;
169 }
170
171 usb_fill_bulk_urb(buf->urb, dev->udev,
172 usb_rcvbulkpipe(dev->udev,
173 dev->bulk_in_endpointAddr),
174 mem, dev->bulk_in_size,
175 hdpvr_read_bulk_callback, buf);
176
177 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
178 buf->status = BUFSTAT_AVAILABLE;
179 list_add_tail(&buf->buff_list, &dev->free_buff_list);
180 }
181 return 0;
182 exit_urb_buffer:
183 usb_free_urb(urb);
184 exit_urb:
185 kfree(buf);
186 exit:
187 hdpvr_free_buffers(dev);
188 return retval;
189 }
190
191 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
192 {
193 struct hdpvr_buffer *buf;
194 struct urb *urb;
195 int ret = 0, err_count = 0;
196
197 mutex_lock(&dev->io_mutex);
198
199 while (dev->status == STATUS_STREAMING &&
200 !list_empty(&dev->free_buff_list)) {
201
202 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
203 buff_list);
204 if (buf->status != BUFSTAT_AVAILABLE) {
205 v4l2_err(&dev->v4l2_dev,
206 "buffer not marked as available\n");
207 ret = -EFAULT;
208 goto err;
209 }
210
211 urb = buf->urb;
212 urb->status = 0;
213 urb->actual_length = 0;
214 ret = usb_submit_urb(urb, GFP_KERNEL);
215 if (ret) {
216 v4l2_err(&dev->v4l2_dev,
217 "usb_submit_urb in %s returned %d\n",
218 __func__, ret);
219 if (++err_count > 2)
220 break;
221 continue;
222 }
223 buf->status = BUFSTAT_INPROGRESS;
224 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
225 }
226 err:
227 print_buffer_status();
228 mutex_unlock(&dev->io_mutex);
229 return ret;
230 }
231
232 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
233 {
234 struct hdpvr_buffer *buf;
235
236 mutex_lock(&dev->io_mutex);
237
238 if (list_empty(&dev->rec_buff_list)) {
239 mutex_unlock(&dev->io_mutex);
240 return NULL;
241 }
242
243 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
244 buff_list);
245 mutex_unlock(&dev->io_mutex);
246
247 return buf;
248 }
249
250 static void hdpvr_transmit_buffers(struct work_struct *work)
251 {
252 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
253 worker);
254
255 while (dev->status == STATUS_STREAMING) {
256
257 if (hdpvr_submit_buffers(dev)) {
258 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
259 goto error;
260 }
261 if (wait_event_interruptible(dev->wait_buffer,
262 !list_empty(&dev->free_buff_list) ||
263 dev->status != STATUS_STREAMING))
264 goto error;
265 }
266
267 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
268 "transmit worker exited\n");
269 return;
270 error:
271 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
272 "transmit buffers errored\n");
273 dev->status = STATUS_ERROR;
274 }
275
276 /* function expects dev->io_mutex to be hold by caller */
277 static int hdpvr_start_streaming(struct hdpvr_device *dev)
278 {
279 int ret;
280 struct hdpvr_video_info vidinf;
281
282 if (dev->status == STATUS_STREAMING)
283 return 0;
284 if (dev->status != STATUS_IDLE)
285 return -EAGAIN;
286
287 ret = get_video_info(dev, &vidinf);
288 if (ret < 0)
289 return ret;
290
291 if (!vidinf.valid) {
292 msleep(250);
293 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
294 "no video signal at input %d\n", dev->options.video_input);
295 return -EAGAIN;
296 }
297
298 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
299 "video signal: %dx%d@%dhz\n", vidinf.width,
300 vidinf.height, vidinf.fps);
301
302 /* start streaming 2 request */
303 ret = usb_control_msg(dev->udev,
304 usb_sndctrlpipe(dev->udev, 0),
305 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
306 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
307 "encoder start control request returned %d\n", ret);
308 if (ret < 0)
309 return ret;
310
311 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
312 if (ret)
313 return ret;
314
315 dev->status = STATUS_STREAMING;
316
317 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
318 queue_work(dev->workqueue, &dev->worker);
319
320 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
321 "streaming started\n");
322
323 return 0;
324 }
325
326
327 /* function expects dev->io_mutex to be hold by caller */
328 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
329 {
330 int actual_length;
331 uint c = 0;
332 u8 *buf;
333
334 if (dev->status == STATUS_IDLE)
335 return 0;
336 else if (dev->status != STATUS_STREAMING)
337 return -EAGAIN;
338
339 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
340 if (!buf)
341 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
342 "for emptying the internal device buffer. "
343 "Next capture start will be slow\n");
344
345 dev->status = STATUS_SHUTTING_DOWN;
346 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
347 mutex_unlock(&dev->io_mutex);
348
349 wake_up_interruptible(&dev->wait_buffer);
350 msleep(50);
351
352 flush_workqueue(dev->workqueue);
353
354 mutex_lock(&dev->io_mutex);
355 /* kill the still outstanding urbs */
356 hdpvr_cancel_queue(dev);
357
358 /* emptying the device buffer beforeshutting it down */
359 while (buf && ++c < 500 &&
360 !usb_bulk_msg(dev->udev,
361 usb_rcvbulkpipe(dev->udev,
362 dev->bulk_in_endpointAddr),
363 buf, dev->bulk_in_size, &actual_length,
364 BULK_URB_TIMEOUT)) {
365 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
366 "%2d: got %d bytes\n", c, actual_length);
367 }
368 kfree(buf);
369 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
370 "used %d urbs to empty device buffers\n", c-1);
371 msleep(10);
372
373 dev->status = STATUS_IDLE;
374
375 return 0;
376 }
377
378
379 /*=======================================================================*/
380 /*
381 * video 4 linux 2 file operations
382 */
383
384 static int hdpvr_open(struct file *file)
385 {
386 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
387
388 if (fh == NULL)
389 return -ENOMEM;
390 fh->legacy_mode = true;
391 v4l2_fh_init(&fh->fh, video_devdata(file));
392 v4l2_fh_add(&fh->fh);
393 file->private_data = fh;
394 return 0;
395 }
396
397 static int hdpvr_release(struct file *file)
398 {
399 struct hdpvr_device *dev = video_drvdata(file);
400
401 mutex_lock(&dev->io_mutex);
402 if (file->private_data == dev->owner) {
403 hdpvr_stop_streaming(dev);
404 dev->owner = NULL;
405 }
406 mutex_unlock(&dev->io_mutex);
407
408 return v4l2_fh_release(file);
409 }
410
411 /*
412 * hdpvr_v4l2_read()
413 * will allocate buffers when called for the first time
414 */
415 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
416 loff_t *pos)
417 {
418 struct hdpvr_device *dev = video_drvdata(file);
419 struct hdpvr_buffer *buf = NULL;
420 struct urb *urb;
421 unsigned int ret = 0;
422 int rem, cnt;
423
424 if (*pos)
425 return -ESPIPE;
426
427 mutex_lock(&dev->io_mutex);
428 if (dev->status == STATUS_IDLE) {
429 if (hdpvr_start_streaming(dev)) {
430 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
431 "start_streaming failed\n");
432 ret = -EIO;
433 msleep(200);
434 dev->status = STATUS_IDLE;
435 mutex_unlock(&dev->io_mutex);
436 goto err;
437 }
438 dev->owner = file->private_data;
439 print_buffer_status();
440 }
441 mutex_unlock(&dev->io_mutex);
442
443 /* wait for the first buffer */
444 if (!(file->f_flags & O_NONBLOCK)) {
445 if (wait_event_interruptible(dev->wait_data,
446 hdpvr_get_next_buffer(dev)))
447 return -ERESTARTSYS;
448 }
449
450 buf = hdpvr_get_next_buffer(dev);
451
452 while (count > 0 && buf) {
453
454 if (buf->status != BUFSTAT_READY &&
455 dev->status != STATUS_DISCONNECTED) {
456 /* return nonblocking */
457 if (file->f_flags & O_NONBLOCK) {
458 if (!ret)
459 ret = -EAGAIN;
460 goto err;
461 }
462
463 if (wait_event_interruptible(dev->wait_data,
464 buf->status == BUFSTAT_READY)) {
465 ret = -ERESTARTSYS;
466 goto err;
467 }
468 }
469
470 if (buf->status != BUFSTAT_READY)
471 break;
472
473 /* set remaining bytes to copy */
474 urb = buf->urb;
475 rem = urb->actual_length - buf->pos;
476 cnt = rem > count ? count : rem;
477
478 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
479 cnt)) {
480 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
481 if (!ret)
482 ret = -EFAULT;
483 goto err;
484 }
485
486 buf->pos += cnt;
487 count -= cnt;
488 buffer += cnt;
489 ret += cnt;
490
491 /* finished, take next buffer */
492 if (buf->pos == urb->actual_length) {
493 mutex_lock(&dev->io_mutex);
494 buf->pos = 0;
495 buf->status = BUFSTAT_AVAILABLE;
496
497 list_move_tail(&buf->buff_list, &dev->free_buff_list);
498
499 print_buffer_status();
500
501 mutex_unlock(&dev->io_mutex);
502
503 wake_up_interruptible(&dev->wait_buffer);
504
505 buf = hdpvr_get_next_buffer(dev);
506 }
507 }
508 err:
509 if (!ret && !buf)
510 ret = -EAGAIN;
511 return ret;
512 }
513
514 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
515 {
516 unsigned long req_events = poll_requested_events(wait);
517 struct hdpvr_buffer *buf = NULL;
518 struct hdpvr_device *dev = video_drvdata(filp);
519 unsigned int mask = v4l2_ctrl_poll(filp, wait);
520
521 if (!(req_events & (POLLIN | POLLRDNORM)))
522 return mask;
523
524 mutex_lock(&dev->io_mutex);
525
526 if (dev->status == STATUS_IDLE) {
527 if (hdpvr_start_streaming(dev)) {
528 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
529 "start_streaming failed\n");
530 dev->status = STATUS_IDLE;
531 } else {
532 dev->owner = filp->private_data;
533 }
534
535 print_buffer_status();
536 }
537 mutex_unlock(&dev->io_mutex);
538
539 buf = hdpvr_get_next_buffer(dev);
540 /* only wait if no data is available */
541 if (!buf || buf->status != BUFSTAT_READY) {
542 poll_wait(filp, &dev->wait_data, wait);
543 buf = hdpvr_get_next_buffer(dev);
544 }
545 if (buf && buf->status == BUFSTAT_READY)
546 mask |= POLLIN | POLLRDNORM;
547
548 return mask;
549 }
550
551
552 static const struct v4l2_file_operations hdpvr_fops = {
553 .owner = THIS_MODULE,
554 .open = hdpvr_open,
555 .release = hdpvr_release,
556 .read = hdpvr_read,
557 .poll = hdpvr_poll,
558 .unlocked_ioctl = video_ioctl2,
559 };
560
561 /*=======================================================================*/
562 /*
563 * V4L2 ioctl handling
564 */
565
566 static int vidioc_querycap(struct file *file, void *priv,
567 struct v4l2_capability *cap)
568 {
569 struct hdpvr_device *dev = video_drvdata(file);
570
571 strcpy(cap->driver, "hdpvr");
572 strcpy(cap->card, "Hauppauge HD PVR");
573 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
574 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
575 V4L2_CAP_READWRITE;
576 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
577 return 0;
578 }
579
580 static int vidioc_s_std(struct file *file, void *_fh,
581 v4l2_std_id std)
582 {
583 struct hdpvr_device *dev = video_drvdata(file);
584 struct hdpvr_fh *fh = _fh;
585 u8 std_type = 1;
586
587 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
588 return -ENODATA;
589 if (dev->status != STATUS_IDLE)
590 return -EBUSY;
591 if (std & V4L2_STD_525_60)
592 std_type = 0;
593 dev->cur_std = std;
594 dev->width = 720;
595 dev->height = std_type ? 576 : 480;
596
597 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
598 }
599
600 static int vidioc_g_std(struct file *file, void *_fh,
601 v4l2_std_id *std)
602 {
603 struct hdpvr_device *dev = video_drvdata(file);
604 struct hdpvr_fh *fh = _fh;
605
606 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
607 return -ENODATA;
608 *std = dev->cur_std;
609 return 0;
610 }
611
612 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
613 {
614 struct hdpvr_device *dev = video_drvdata(file);
615 struct hdpvr_video_info vid_info;
616 struct hdpvr_fh *fh = _fh;
617 int ret;
618
619 *a = V4L2_STD_UNKNOWN;
620 if (dev->options.video_input == HDPVR_COMPONENT)
621 return fh->legacy_mode ? 0 : -ENODATA;
622 ret = get_video_info(dev, &vid_info);
623 if (vid_info.valid && vid_info.width == 720 &&
624 (vid_info.height == 480 || vid_info.height == 576)) {
625 *a = (vid_info.height == 480) ?
626 V4L2_STD_525_60 : V4L2_STD_625_50;
627 }
628 return ret;
629 }
630
631 static int vidioc_s_dv_timings(struct file *file, void *_fh,
632 struct v4l2_dv_timings *timings)
633 {
634 struct hdpvr_device *dev = video_drvdata(file);
635 struct hdpvr_fh *fh = _fh;
636 int i;
637
638 fh->legacy_mode = false;
639 if (dev->options.video_input)
640 return -ENODATA;
641 if (dev->status != STATUS_IDLE)
642 return -EBUSY;
643 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
644 if (v4l_match_dv_timings(timings, hdpvr_dv_timings + i, 0))
645 break;
646 if (i == ARRAY_SIZE(hdpvr_dv_timings))
647 return -EINVAL;
648 dev->cur_dv_timings = hdpvr_dv_timings[i];
649 dev->width = hdpvr_dv_timings[i].bt.width;
650 dev->height = hdpvr_dv_timings[i].bt.height;
651 return 0;
652 }
653
654 static int vidioc_g_dv_timings(struct file *file, void *_fh,
655 struct v4l2_dv_timings *timings)
656 {
657 struct hdpvr_device *dev = video_drvdata(file);
658 struct hdpvr_fh *fh = _fh;
659
660 fh->legacy_mode = false;
661 if (dev->options.video_input)
662 return -ENODATA;
663 *timings = dev->cur_dv_timings;
664 return 0;
665 }
666
667 static int vidioc_query_dv_timings(struct file *file, void *_fh,
668 struct v4l2_dv_timings *timings)
669 {
670 struct hdpvr_device *dev = video_drvdata(file);
671 struct hdpvr_fh *fh = _fh;
672 struct hdpvr_video_info vid_info;
673 bool interlaced;
674 int ret = 0;
675 int i;
676
677 fh->legacy_mode = false;
678 if (dev->options.video_input)
679 return -ENODATA;
680 ret = get_video_info(dev, &vid_info);
681 if (ret)
682 return ret;
683 if (!vid_info.valid)
684 return -ENOLCK;
685 interlaced = vid_info.fps <= 30;
686 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
687 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
688 unsigned hsize;
689 unsigned vsize;
690 unsigned fps;
691
692 hsize = bt->hfrontporch + bt->hsync + bt->hbackporch + bt->width;
693 vsize = bt->vfrontporch + bt->vsync + bt->vbackporch +
694 bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch +
695 bt->height;
696 fps = (unsigned)bt->pixelclock / (hsize * vsize);
697 if (bt->width != vid_info.width ||
698 bt->height != vid_info.height ||
699 bt->interlaced != interlaced ||
700 (fps != vid_info.fps && fps + 1 != vid_info.fps))
701 continue;
702 *timings = hdpvr_dv_timings[i];
703 break;
704 }
705 if (i == ARRAY_SIZE(hdpvr_dv_timings))
706 ret = -ERANGE;
707
708 return ret;
709 }
710
711 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
712 struct v4l2_enum_dv_timings *timings)
713 {
714 struct hdpvr_device *dev = video_drvdata(file);
715 struct hdpvr_fh *fh = _fh;
716
717 fh->legacy_mode = false;
718 memset(timings->reserved, 0, sizeof(timings->reserved));
719 if (dev->options.video_input)
720 return -ENODATA;
721 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
722 return -EINVAL;
723 timings->timings = hdpvr_dv_timings[timings->index];
724 return 0;
725 }
726
727 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
728 struct v4l2_dv_timings_cap *cap)
729 {
730 struct hdpvr_device *dev = video_drvdata(file);
731 struct hdpvr_fh *fh = _fh;
732
733 fh->legacy_mode = false;
734 if (dev->options.video_input)
735 return -ENODATA;
736 cap->type = V4L2_DV_BT_656_1120;
737 cap->bt.min_width = 720;
738 cap->bt.max_width = 1920;
739 cap->bt.min_height = 480;
740 cap->bt.max_height = 1080;
741 cap->bt.min_pixelclock = 27000000;
742 cap->bt.max_pixelclock = 74250000;
743 cap->bt.standards = V4L2_DV_BT_STD_CEA861;
744 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
745 return 0;
746 }
747
748 static const char *iname[] = {
749 [HDPVR_COMPONENT] = "Component",
750 [HDPVR_SVIDEO] = "S-Video",
751 [HDPVR_COMPOSITE] = "Composite",
752 };
753
754 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
755 {
756 unsigned int n;
757
758 n = i->index;
759 if (n >= HDPVR_VIDEO_INPUTS)
760 return -EINVAL;
761
762 i->type = V4L2_INPUT_TYPE_CAMERA;
763
764 strncpy(i->name, iname[n], sizeof(i->name) - 1);
765 i->name[sizeof(i->name) - 1] = '\0';
766
767 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
768
769 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
770 i->std = n ? V4L2_STD_ALL : 0;
771
772 return 0;
773 }
774
775 static int vidioc_s_input(struct file *file, void *_fh,
776 unsigned int index)
777 {
778 struct hdpvr_device *dev = video_drvdata(file);
779 int retval;
780
781 if (index >= HDPVR_VIDEO_INPUTS)
782 return -EINVAL;
783
784 if (dev->status != STATUS_IDLE)
785 return -EBUSY;
786
787 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
788 if (!retval) {
789 dev->options.video_input = index;
790 /*
791 * Unfortunately gstreamer calls ENUMSTD and bails out if it
792 * won't find any formats, even though component input is
793 * selected. This means that we have to leave tvnorms at
794 * V4L2_STD_ALL. We cannot use the 'legacy' trick since
795 * tvnorms is set at the device node level and not at the
796 * filehandle level.
797 *
798 * Comment this out for now, but if the legacy mode can be
799 * removed in the future, then this code should be enabled
800 * again.
801 dev->video_dev->tvnorms =
802 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
803 */
804 }
805
806 return retval;
807 }
808
809 static int vidioc_g_input(struct file *file, void *private_data,
810 unsigned int *index)
811 {
812 struct hdpvr_device *dev = video_drvdata(file);
813
814 *index = dev->options.video_input;
815 return 0;
816 }
817
818
819 static const char *audio_iname[] = {
820 [HDPVR_RCA_FRONT] = "RCA front",
821 [HDPVR_RCA_BACK] = "RCA back",
822 [HDPVR_SPDIF] = "SPDIF",
823 };
824
825 static int vidioc_enumaudio(struct file *file, void *priv,
826 struct v4l2_audio *audio)
827 {
828 unsigned int n;
829
830 n = audio->index;
831 if (n >= HDPVR_AUDIO_INPUTS)
832 return -EINVAL;
833
834 audio->capability = V4L2_AUDCAP_STEREO;
835
836 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
837 audio->name[sizeof(audio->name) - 1] = '\0';
838
839 return 0;
840 }
841
842 static int vidioc_s_audio(struct file *file, void *private_data,
843 const struct v4l2_audio *audio)
844 {
845 struct hdpvr_device *dev = video_drvdata(file);
846 int retval;
847
848 if (audio->index >= HDPVR_AUDIO_INPUTS)
849 return -EINVAL;
850
851 if (dev->status != STATUS_IDLE)
852 return -EBUSY;
853
854 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
855 if (!retval)
856 dev->options.audio_input = audio->index;
857
858 return retval;
859 }
860
861 static int vidioc_g_audio(struct file *file, void *private_data,
862 struct v4l2_audio *audio)
863 {
864 struct hdpvr_device *dev = video_drvdata(file);
865
866 audio->index = dev->options.audio_input;
867 audio->capability = V4L2_AUDCAP_STEREO;
868 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
869 audio->name[sizeof(audio->name) - 1] = '\0';
870 return 0;
871 }
872
873 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
874 {
875 struct hdpvr_device *dev =
876 container_of(ctrl->handler, struct hdpvr_device, hdl);
877
878 switch (ctrl->id) {
879 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
880 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
881 dev->video_bitrate->val >= dev->video_bitrate_peak->val)
882 dev->video_bitrate_peak->val =
883 dev->video_bitrate->val + 100000;
884 break;
885 }
886 return 0;
887 }
888
889 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
890 {
891 struct hdpvr_device *dev =
892 container_of(ctrl->handler, struct hdpvr_device, hdl);
893 struct hdpvr_options *opt = &dev->options;
894 int ret = -EINVAL;
895
896 switch (ctrl->id) {
897 case V4L2_CID_BRIGHTNESS:
898 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
899 if (ret)
900 break;
901 dev->options.brightness = ctrl->val;
902 return 0;
903 case V4L2_CID_CONTRAST:
904 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
905 if (ret)
906 break;
907 dev->options.contrast = ctrl->val;
908 return 0;
909 case V4L2_CID_SATURATION:
910 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
911 if (ret)
912 break;
913 dev->options.saturation = ctrl->val;
914 return 0;
915 case V4L2_CID_HUE:
916 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
917 if (ret)
918 break;
919 dev->options.hue = ctrl->val;
920 return 0;
921 case V4L2_CID_SHARPNESS:
922 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
923 if (ret)
924 break;
925 dev->options.sharpness = ctrl->val;
926 return 0;
927 case V4L2_CID_MPEG_AUDIO_ENCODING:
928 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
929 opt->audio_codec = ctrl->val;
930 return hdpvr_set_audio(dev, opt->audio_input,
931 opt->audio_codec);
932 }
933 return 0;
934 case V4L2_CID_MPEG_VIDEO_ENCODING:
935 return 0;
936 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
937 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
938 /* opt->gop_mode |= 0x2; */
939 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
940 /* opt->gop_mode); */
941 /* } */
942 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
943 /* opt->gop_mode &= ~0x2; */
944 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
945 /* opt->gop_mode); */
946 /* } */
947 /* break; */
948 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
949 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
950 uint bitrate = dev->video_bitrate->val / 100000;
951
952 if (ctrl->is_new) {
953 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
954 opt->bitrate_mode = HDPVR_CONSTANT;
955 else
956 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
957 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
958 opt->bitrate_mode);
959 v4l2_ctrl_activate(dev->video_bitrate_peak,
960 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
961 }
962
963 if (dev->video_bitrate_peak->is_new ||
964 dev->video_bitrate->is_new) {
965 opt->bitrate = bitrate;
966 opt->peak_bitrate = peak_bitrate;
967 hdpvr_set_bitrate(dev);
968 }
969 return 0;
970 }
971 case V4L2_CID_MPEG_STREAM_TYPE:
972 return 0;
973 default:
974 break;
975 }
976 return ret;
977 }
978
979 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
980 struct v4l2_fmtdesc *f)
981 {
982 if (f->index != 0)
983 return -EINVAL;
984
985 f->flags = V4L2_FMT_FLAG_COMPRESSED;
986 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
987 f->pixelformat = V4L2_PIX_FMT_MPEG;
988
989 return 0;
990 }
991
992 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
993 struct v4l2_format *f)
994 {
995 struct hdpvr_device *dev = video_drvdata(file);
996 struct hdpvr_fh *fh = _fh;
997 int ret;
998
999 /*
1000 * The original driver would always returns the current detected
1001 * resolution as the format (and EFAULT if it couldn't be detected).
1002 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1003 * better way of doing this, but to stay compatible with existing
1004 * applications we assume legacy mode every time an application opens
1005 * the device. Only if one of the new DV_TIMINGS ioctls is called
1006 * will the filehandle go into 'normal' mode where g_fmt returns the
1007 * last set format.
1008 */
1009 if (fh->legacy_mode) {
1010 struct hdpvr_video_info vid_info;
1011
1012 ret = get_video_info(dev, &vid_info);
1013 if (ret < 0)
1014 return ret;
1015 if (!vid_info.valid)
1016 return -EFAULT;
1017 f->fmt.pix.width = vid_info.width;
1018 f->fmt.pix.height = vid_info.height;
1019 } else {
1020 f->fmt.pix.width = dev->width;
1021 f->fmt.pix.height = dev->height;
1022 }
1023 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1024 f->fmt.pix.sizeimage = dev->bulk_in_size;
1025 f->fmt.pix.bytesperline = 0;
1026 f->fmt.pix.priv = 0;
1027 if (f->fmt.pix.width == 720) {
1028 /* SDTV formats */
1029 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1030 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1031 } else {
1032 /* HDTV formats */
1033 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE240M;
1034 f->fmt.pix.field = V4L2_FIELD_NONE;
1035 }
1036 return 0;
1037 }
1038
1039 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1040 struct v4l2_encoder_cmd *a)
1041 {
1042 struct hdpvr_device *dev = video_drvdata(filp);
1043 int res = 0;
1044
1045 mutex_lock(&dev->io_mutex);
1046 a->flags = 0;
1047
1048 switch (a->cmd) {
1049 case V4L2_ENC_CMD_START:
1050 if (dev->owner && filp->private_data != dev->owner) {
1051 res = -EBUSY;
1052 break;
1053 }
1054 if (dev->status == STATUS_STREAMING)
1055 break;
1056 res = hdpvr_start_streaming(dev);
1057 if (!res)
1058 dev->owner = filp->private_data;
1059 else
1060 dev->status = STATUS_IDLE;
1061 break;
1062 case V4L2_ENC_CMD_STOP:
1063 if (dev->owner && filp->private_data != dev->owner) {
1064 res = -EBUSY;
1065 break;
1066 }
1067 if (dev->status == STATUS_IDLE)
1068 break;
1069 res = hdpvr_stop_streaming(dev);
1070 if (!res)
1071 dev->owner = NULL;
1072 break;
1073 default:
1074 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1075 "Unsupported encoder cmd %d\n", a->cmd);
1076 res = -EINVAL;
1077 break;
1078 }
1079
1080 mutex_unlock(&dev->io_mutex);
1081 return res;
1082 }
1083
1084 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1085 struct v4l2_encoder_cmd *a)
1086 {
1087 a->flags = 0;
1088 switch (a->cmd) {
1089 case V4L2_ENC_CMD_START:
1090 case V4L2_ENC_CMD_STOP:
1091 return 0;
1092 default:
1093 return -EINVAL;
1094 }
1095 }
1096
1097 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1098 .vidioc_querycap = vidioc_querycap,
1099 .vidioc_s_std = vidioc_s_std,
1100 .vidioc_g_std = vidioc_g_std,
1101 .vidioc_querystd = vidioc_querystd,
1102 .vidioc_s_dv_timings = vidioc_s_dv_timings,
1103 .vidioc_g_dv_timings = vidioc_g_dv_timings,
1104 .vidioc_query_dv_timings= vidioc_query_dv_timings,
1105 .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1106 .vidioc_dv_timings_cap = vidioc_dv_timings_cap,
1107 .vidioc_enum_input = vidioc_enum_input,
1108 .vidioc_g_input = vidioc_g_input,
1109 .vidioc_s_input = vidioc_s_input,
1110 .vidioc_enumaudio = vidioc_enumaudio,
1111 .vidioc_g_audio = vidioc_g_audio,
1112 .vidioc_s_audio = vidioc_s_audio,
1113 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1114 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1115 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1116 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1117 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1118 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1119 .vidioc_log_status = v4l2_ctrl_log_status,
1120 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1121 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1122 };
1123
1124 static void hdpvr_device_release(struct video_device *vdev)
1125 {
1126 struct hdpvr_device *dev = video_get_drvdata(vdev);
1127
1128 hdpvr_delete(dev);
1129 mutex_lock(&dev->io_mutex);
1130 destroy_workqueue(dev->workqueue);
1131 mutex_unlock(&dev->io_mutex);
1132
1133 v4l2_device_unregister(&dev->v4l2_dev);
1134 v4l2_ctrl_handler_free(&dev->hdl);
1135
1136 /* deregister I2C adapter */
1137 #if IS_ENABLED(CONFIG_I2C)
1138 mutex_lock(&dev->i2c_mutex);
1139 i2c_del_adapter(&dev->i2c_adapter);
1140 mutex_unlock(&dev->i2c_mutex);
1141 #endif /* CONFIG_I2C */
1142
1143 kfree(dev->usbc_buf);
1144 kfree(dev);
1145 }
1146
1147 static const struct video_device hdpvr_video_template = {
1148 .fops = &hdpvr_fops,
1149 .release = hdpvr_device_release,
1150 .ioctl_ops = &hdpvr_ioctl_ops,
1151 .tvnorms = V4L2_STD_ALL,
1152 };
1153
1154 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1155 .try_ctrl = hdpvr_try_ctrl,
1156 .s_ctrl = hdpvr_s_ctrl,
1157 };
1158
1159 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1160 int devnum)
1161 {
1162 struct v4l2_ctrl_handler *hdl = &dev->hdl;
1163 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1164 int res;
1165
1166 dev->cur_std = V4L2_STD_525_60;
1167 dev->width = 720;
1168 dev->height = 480;
1169 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1170 v4l2_ctrl_handler_init(hdl, 11);
1171 if (dev->fw_ver > 0x15) {
1172 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1173 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1174 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1175 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1177 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1179 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1181 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1182 } else {
1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1184 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1186 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1190 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1191 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1192 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1193 }
1194
1195 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1196 V4L2_CID_MPEG_STREAM_TYPE,
1197 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1198 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1199 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1200 V4L2_CID_MPEG_AUDIO_ENCODING,
1201 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1202 0x7, V4L2_MPEG_AUDIO_ENCODING_AAC);
1203 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1204 V4L2_CID_MPEG_VIDEO_ENCODING,
1205 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1206 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1207
1208 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1209 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1210 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1211 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1212
1213 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1214 V4L2_CID_MPEG_VIDEO_BITRATE,
1215 1000000, 13500000, 100000, 6500000);
1216 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1217 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1218 1100000, 20200000, 100000, 9000000);
1219 dev->v4l2_dev.ctrl_handler = hdl;
1220 if (hdl->error) {
1221 res = hdl->error;
1222 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1223 goto error;
1224 }
1225 v4l2_ctrl_cluster(3, &dev->video_mode);
1226 res = v4l2_ctrl_handler_setup(hdl);
1227 if (res < 0) {
1228 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1229 goto error;
1230 }
1231
1232 /* setup and register video device */
1233 dev->video_dev = video_device_alloc();
1234 if (!dev->video_dev) {
1235 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
1236 res = -ENOMEM;
1237 goto error;
1238 }
1239
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 set_bit(V4L2_FL_USE_FH_PRIO, &dev->video_dev->flags);
1245
1246 res = video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum);
1247 if (res < 0) {
1248 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1249 goto error;
1250 }
1251
1252 return 0;
1253 error:
1254 v4l2_ctrl_handler_free(hdl);
1255 return res;
1256 }
CRIS linux kernel tree