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