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USB: Short new 'graph for usb-serial.txt
[deliverable/linux.git] / drivers / media / video / hdpvr / hdpvr-video.c
CommitLineData
9aba42ef 1/*
e86da6f0 2 * Hauppauge HD PVR USB driver - video 4 linux 2 interface
9aba42ef
JG		 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/version.h>
21#include <linux/workqueue.h>
22
23#include <linux/videodev2.h>
24#include <media/v4l2-dev.h>
25#include <media/v4l2-common.h>
26#include <media/v4l2-ioctl.h>
27#include "hdpvr.h"
28
29#define BULK_URB_TIMEOUT 1250 /* 1.25 seconds */
30
9ef77adf
JG		 31#define print_buffer_status() { \
32 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
33 "%s:%d buffer stat: %d free, %d proc\n", \
34 __func__, __LINE__, \
35 list_size(&dev->free_buff_list), \
36 list_size(&dev->rec_buff_list)); }
d211bfcb 37
9aba42ef
JG		 38struct hdpvr_fh {
39 struct hdpvr_device *dev;
40};
41
42static uint list_size(struct list_head *list)
43{
44 struct list_head *tmp;
45 uint count = 0;
46
47 list_for_each(tmp, list) {
48 count++;
49 }
50
51 return count;
52}
53
54/*=========================================================================*/
55/* urb callback */
56static void hdpvr_read_bulk_callback(struct urb *urb)
57{
58 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
59 struct hdpvr_device *dev = buf->dev;
60
61 /* marking buffer as received and wake waiting */
62 buf->status = BUFSTAT_READY;
63 wake_up_interruptible(&dev->wait_data);
64}
65
66/*=========================================================================*/
67/* bufffer bits */
68
69/* function expects dev->io_mutex to be hold by caller */
70int hdpvr_cancel_queue(struct hdpvr_device *dev)
71{
72 struct hdpvr_buffer *buf;
73
74 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
75 usb_kill_urb(buf->urb);
76 buf->status = BUFSTAT_AVAILABLE;
77 }
78
79 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
80
81 return 0;
82}
83
84static int hdpvr_free_queue(struct list_head *q)
85{
86 struct list_head *tmp;
87 struct list_head *p;
88 struct hdpvr_buffer *buf;
89 struct urb *urb;
90
91 for (p = q->next; p != q;) {
92 buf = list_entry(p, struct hdpvr_buffer, buff_list);
93
94 urb = buf->urb;
95 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
96 urb->transfer_buffer, urb->transfer_dma);
97 usb_free_urb(urb);
98 tmp = p->next;
99 list_del(p);
100 kfree(buf);
101 p = tmp;
102 }
103
104 return 0;
105}
106
107/* function expects dev->io_mutex to be hold by caller */
108int hdpvr_free_buffers(struct hdpvr_device *dev)
109{
110 hdpvr_cancel_queue(dev);
111
112 hdpvr_free_queue(&dev->free_buff_list);
113 hdpvr_free_queue(&dev->rec_buff_list);
114
115 return 0;
116}
117
118/* function expects dev->io_mutex to be hold by caller */
119int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
120{
121 uint i;
122 int retval = -ENOMEM;
123 u8 *mem;
124 struct hdpvr_buffer *buf;
125 struct urb *urb;
126
9ef77adf 127 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 128 "allocating %u buffers\n", count);
129
130 for (i = 0; i < count; i++) {
131
132 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
133 if (!buf) {
9ef77adf 134 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
9aba42ef
JG		 135 goto exit;
136 }
137 buf->dev = dev;
138
139 urb = usb_alloc_urb(0, GFP_KERNEL);
140 if (!urb) {
9ef77adf 141 v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
cd0e280f 142 goto exit_urb;
9aba42ef
JG		 143 }
144 buf->urb = urb;
145
146 mem = usb_buffer_alloc(dev->udev, dev->bulk_in_size, GFP_KERNEL,
147 &urb->transfer_dma);
148 if (!mem) {
9ef77adf
JG		 149 v4l2_err(&dev->v4l2_dev,
150 "cannot allocate usb transfer buffer\n");
cd0e280f 151 goto exit_urb_buffer;
9aba42ef
JG		 152 }
153
154 usb_fill_bulk_urb(buf->urb, dev->udev,
155 usb_rcvbulkpipe(dev->udev,
156 dev->bulk_in_endpointAddr),
157 mem, dev->bulk_in_size,
158 hdpvr_read_bulk_callback, buf);
159
160 buf->status = BUFSTAT_AVAILABLE;
161 list_add_tail(&buf->buff_list, &dev->free_buff_list);
162 }
163 return 0;
cd0e280f
JL		 164exit_urb_buffer:
165 usb_free_urb(urb);
166exit_urb:
167 kfree(buf);
9aba42ef
JG		 168exit:
169 hdpvr_free_buffers(dev);
170 return retval;
171}
172
173static int hdpvr_submit_buffers(struct hdpvr_device *dev)
174{
175 struct hdpvr_buffer *buf;
176 struct urb *urb;
177 int ret = 0, err_count = 0;
178
179 mutex_lock(&dev->io_mutex);
180
181 while (dev->status == STATUS_STREAMING &&
182 !list_empty(&dev->free_buff_list)) {
183
184 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
185 buff_list);
186 if (buf->status != BUFSTAT_AVAILABLE) {
9ef77adf 187 v4l2_err(&dev->v4l2_dev,
4b512d26 188 "buffer not marked as available\n");
9aba42ef
JG		 189 ret = -EFAULT;
190 goto err;
191 }
192
193 urb = buf->urb;
194 urb->status = 0;
195 urb->actual_length = 0;
196 ret = usb_submit_urb(urb, GFP_KERNEL);
197 if (ret) {
9ef77adf
JG		 198 v4l2_err(&dev->v4l2_dev,
199 "usb_submit_urb in %s returned %d\n",
200 __func__, ret);
9aba42ef
JG		 201 if (++err_count > 2)
202 break;
203 continue;
204 }
205 buf->status = BUFSTAT_INPROGRESS;
206 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
207 }
208err:
d211bfcb 209 print_buffer_status();
9aba42ef
JG		 210 mutex_unlock(&dev->io_mutex);
211 return ret;
212}
213
214static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
215{
216 struct hdpvr_buffer *buf;
217
218 mutex_lock(&dev->io_mutex);
219
220 if (list_empty(&dev->rec_buff_list)) {
221 mutex_unlock(&dev->io_mutex);
222 return NULL;
223 }
224
225 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
226 buff_list);
227 mutex_unlock(&dev->io_mutex);
228
229 return buf;
230}
231
232static void hdpvr_transmit_buffers(struct work_struct *work)
233{
234 struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
235 worker);
236
237 while (dev->status == STATUS_STREAMING) {
238
239 if (hdpvr_submit_buffers(dev)) {
9ef77adf 240 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
9aba42ef
JG		 241 goto error;
242 }
243 if (wait_event_interruptible(dev->wait_buffer,
244 !list_empty(&dev->free_buff_list) ||
245 dev->status != STATUS_STREAMING))
246 goto error;
247 }
248
9ef77adf 249 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 250 "transmit worker exited\n");
251 return;
252error:
9ef77adf 253 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 254 "transmit buffers errored\n");
255 dev->status = STATUS_ERROR;
256}
257
258/* function expects dev->io_mutex to be hold by caller */
259static int hdpvr_start_streaming(struct hdpvr_device *dev)
260{
261 int ret;
262 struct hdpvr_video_info *vidinf;
263
264 if (dev->status == STATUS_STREAMING)
265 return 0;
266 else if (dev->status != STATUS_IDLE)
267 return -EAGAIN;
268
269 vidinf = get_video_info(dev);
270
271 if (vidinf) {
9ef77adf 272 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 273 "video signal: %dx%d@%dhz\n", vidinf->width,
274 vidinf->height, vidinf->fps);
275 kfree(vidinf);
276
277 /* start streaming 2 request */
278 ret = usb_control_msg(dev->udev,
279 usb_sndctrlpipe(dev->udev, 0),
280 0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
9ef77adf 281 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 282 "encoder start control request returned %d\n", ret);
283
284 hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
285
286 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
287 queue_work(dev->workqueue, &dev->worker);
288
9ef77adf 289 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 290 "streaming started\n");
291 dev->status = STATUS_STREAMING;
292
293 return 0;
294 }
295 msleep(250);
9ef77adf 296 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 297 "no video signal at input %d\n", dev->options.video_input);
298 return -EAGAIN;
299}
300
301
302/* function expects dev->io_mutex to be hold by caller */
303static int hdpvr_stop_streaming(struct hdpvr_device *dev)
304{
85d682b9
MN		 305 int actual_length;
306 uint c = 0;
7d771ff0
JG		 307 u8 *buf;
308
9aba42ef
JG		 309 if (dev->status == STATUS_IDLE)
310 return 0;
311 else if (dev->status != STATUS_STREAMING)
312 return -EAGAIN;
313
7d771ff0
JG		 314 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
315 if (!buf)
316 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
317 "for emptying the internal device buffer. "
318 "Next capture start will be slow\n");
319
9aba42ef
JG		 320 dev->status = STATUS_SHUTTING_DOWN;
321 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
48f98f75 322 mutex_unlock(&dev->io_mutex);
9aba42ef
JG		 323
324 wake_up_interruptible(&dev->wait_buffer);
325 msleep(50);
326
327 flush_workqueue(dev->workqueue);
328
48f98f75 329 mutex_lock(&dev->io_mutex);
9aba42ef
JG		 330 /* kill the still outstanding urbs */
331 hdpvr_cancel_queue(dev);
332
7d771ff0
JG		 333 /* emptying the device buffer beforeshutting it down */
334 while (buf && ++c < 500 &&
335 !usb_bulk_msg(dev->udev,
336 usb_rcvbulkpipe(dev->udev,
337 dev->bulk_in_endpointAddr),
338 buf, dev->bulk_in_size, &actual_length,
339 BULK_URB_TIMEOUT)) {
340 /* wait */
341 msleep(5);
342 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
343 "%2d: got %d bytes\n", c, actual_length);
344 }
345 kfree(buf);
346 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
347 "used %d urbs to empty device buffers\n", c-1);
348 msleep(10);
349
9aba42ef
JG		 350 dev->status = STATUS_IDLE;
351
352 return 0;
353}
354
355
356/*=======================================================================*/
357/*
358 * video 4 linux 2 file operations
359 */
360
361static int hdpvr_open(struct file *file)
362{
363 struct hdpvr_device *dev;
364 struct hdpvr_fh *fh;
365 int retval = -ENOMEM;
366
367 dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
368 if (!dev) {
9ef77adf 369 v4l2_err(&dev->v4l2_dev, "open failing with with ENODEV\n");
9aba42ef
JG		 370 retval = -ENODEV;
371 goto err;
372 }
373
374 fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL);
375 if (!fh) {
9ef77adf 376 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
9aba42ef
JG		 377 goto err;
378 }
379 /* lock the device to allow correctly handling errors
380 * in resumption */
381 mutex_lock(&dev->io_mutex);
382 dev->open_count++;
00c1e216 383 mutex_unlock(&dev->io_mutex);
9aba42ef
JG		 384
385 fh->dev = dev;
386
387 /* save our object in the file's private structure */
388 file->private_data = fh;
389
390 retval = 0;
391err:
9aba42ef
JG		 392 return retval;
393}
394
395static int hdpvr_release(struct file *file)
396{
397 struct hdpvr_fh *fh = (struct hdpvr_fh *)file->private_data;
398 struct hdpvr_device *dev = fh->dev;
399
400 if (!dev)
401 return -ENODEV;
402
403 mutex_lock(&dev->io_mutex);
404 if (!(--dev->open_count) && dev->status == STATUS_STREAMING)
405 hdpvr_stop_streaming(dev);
406
407 mutex_unlock(&dev->io_mutex);
408
409 return 0;
410}
411
412/*
413 * hdpvr_v4l2_read()
414 * will allocate buffers when called for the first time
415 */
416static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
417 loff_t *pos)
418{
419 struct hdpvr_fh *fh = file->private_data;
420 struct hdpvr_device *dev = fh->dev;
421 struct hdpvr_buffer *buf = NULL;
422 struct urb *urb;
423 unsigned int ret = 0;
424 int rem, cnt;
425
426 if (*pos)
427 return -ESPIPE;
428
429 if (!dev)
430 return -ENODEV;
431
432 mutex_lock(&dev->io_mutex);
433 if (dev->status == STATUS_IDLE) {
434 if (hdpvr_start_streaming(dev)) {
9ef77adf
JG		 435 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
436 "start_streaming failed\n");
9aba42ef
JG		 437 ret = -EIO;
438 msleep(200);
439 dev->status = STATUS_IDLE;
440 mutex_unlock(&dev->io_mutex);
441 goto err;
442 }
d211bfcb 443 print_buffer_status();
9aba42ef
JG		 444 }
445 mutex_unlock(&dev->io_mutex);
446
447 /* wait for the first buffer */
448 if (!(file->f_flags & O_NONBLOCK)) {
449 if (wait_event_interruptible(dev->wait_data,
450 hdpvr_get_next_buffer(dev)))
451 return -ERESTARTSYS;
452 }
453
454 buf = hdpvr_get_next_buffer(dev);
455
456 while (count > 0 && buf) {
457
458 if (buf->status != BUFSTAT_READY &&
459 dev->status != STATUS_DISCONNECTED) {
460 /* return nonblocking */
461 if (file->f_flags & O_NONBLOCK) {
462 if (!ret)
463 ret = -EAGAIN;
464 goto err;
465 }
466
467 if (wait_event_interruptible(dev->wait_data,
468 buf->status == BUFSTAT_READY)) {
469 ret = -ERESTARTSYS;
470 goto err;
471 }
472 }
473
474 if (buf->status != BUFSTAT_READY)
475 break;
476
477 /* set remaining bytes to copy */
478 urb = buf->urb;
479 rem = urb->actual_length - buf->pos;
480 cnt = rem > count ? count : rem;
481
482 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
483 cnt)) {
9ef77adf 484 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
9aba42ef
JG		 485 if (!ret)
486 ret = -EFAULT;
487 goto err;
488 }
489
490 buf->pos += cnt;
491 count -= cnt;
492 buffer += cnt;
493 ret += cnt;
494
495 /* finished, take next buffer */
496 if (buf->pos == urb->actual_length) {
497 mutex_lock(&dev->io_mutex);
498 buf->pos = 0;
499 buf->status = BUFSTAT_AVAILABLE;
500
501 list_move_tail(&buf->buff_list, &dev->free_buff_list);
502
d211bfcb 503 print_buffer_status();
9aba42ef
JG		 504
505 mutex_unlock(&dev->io_mutex);
506
507 wake_up_interruptible(&dev->wait_buffer);
508
509 buf = hdpvr_get_next_buffer(dev);
510 }
511 }
512err:
513 if (!ret && !buf)
514 ret = -EAGAIN;
515 return ret;
516}
517
518static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
519{
d2ff3ec8 520 struct hdpvr_buffer *buf = NULL;
9aba42ef
JG		 521 struct hdpvr_fh *fh = (struct hdpvr_fh *)filp->private_data;
522 struct hdpvr_device *dev = fh->dev;
523 unsigned int mask = 0;
524
525 mutex_lock(&dev->io_mutex);
526
957b4aa9 527 if (!video_is_registered(dev->video_dev)) {
00c1e216 528 mutex_unlock(&dev->io_mutex);
9aba42ef 529 return -EIO;
00c1e216 530 }
9aba42ef
JG		 531
532 if (dev->status == STATUS_IDLE) {
533 if (hdpvr_start_streaming(dev)) {
9ef77adf
JG		 534 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
535 "start_streaming failed\n");
9aba42ef
JG		 536 dev->status = STATUS_IDLE;
537 }
538
d211bfcb 539 print_buffer_status();
9aba42ef
JG		 540 }
541 mutex_unlock(&dev->io_mutex);
542
d2ff3ec8
JG		 543 buf = hdpvr_get_next_buffer(dev);
544 /* only wait if no data is available */
545 if (!buf || buf->status != BUFSTAT_READY) {
546 poll_wait(filp, &dev->wait_data, wait);
547 buf = hdpvr_get_next_buffer(dev);
9aba42ef 548 }
d2ff3ec8
JG		 549 if (buf && buf->status == BUFSTAT_READY)
550 mask |= POLLIN | POLLRDNORM;
9aba42ef
JG		 551
552 return mask;
553}
554
555
9aba42ef
JG		 556static const struct v4l2_file_operations hdpvr_fops = {
557 .owner = THIS_MODULE,
558 .open = hdpvr_open,
559 .release = hdpvr_release,
560 .read = hdpvr_read,
561 .poll = hdpvr_poll,
76717b88 562 .unlocked_ioctl = video_ioctl2,
9aba42ef
JG		 563};
564
565/*=======================================================================*/
566/*
567 * V4L2 ioctl handling
568 */
569
570static int vidioc_querycap(struct file *file, void *priv,
571 struct v4l2_capability *cap)
572{
573 struct hdpvr_device *dev = video_drvdata(file);
574
575 strcpy(cap->driver, "hdpvr");
fdd70c33 576 strcpy(cap->card, "Hauppauge HD PVR");
9aba42ef
JG		 577 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
578 cap->version = HDPVR_VERSION;
579 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
580 V4L2_CAP_AUDIO |
581 V4L2_CAP_READWRITE;
582 return 0;
583}
584
585static int vidioc_s_std(struct file *file, void *private_data,
586 v4l2_std_id *std)
587{
588 struct hdpvr_fh *fh = file->private_data;
589 struct hdpvr_device *dev = fh->dev;
590 u8 std_type = 1;
591
592 if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60))
593 std_type = 0;
594
595 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
596}
597
598static const char *iname[] = {
599 [HDPVR_COMPONENT] = "Component",
600 [HDPVR_SVIDEO] = "S-Video",
601 [HDPVR_COMPOSITE] = "Composite",
602};
603
604static int vidioc_enum_input(struct file *file, void *priv,
605 struct v4l2_input *i)
606{
607 struct hdpvr_fh *fh = file->private_data;
608 struct hdpvr_device *dev = fh->dev;
609 unsigned int n;
610
611 n = i->index;
612 if (n >= HDPVR_VIDEO_INPUTS)
613 return -EINVAL;
614
615 i->type = V4L2_INPUT_TYPE_CAMERA;
616
617 strncpy(i->name, iname[n], sizeof(i->name) - 1);
618 i->name[sizeof(i->name) - 1] = '\0';
619
620 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
621
622 i->std = dev->video_dev->tvnorms;
623
624 return 0;
625}
626
627static int vidioc_s_input(struct file *file, void *private_data,
628 unsigned int index)
629{
630 struct hdpvr_fh *fh = file->private_data;
631 struct hdpvr_device *dev = fh->dev;
632 int retval;
633
634 if (index >= HDPVR_VIDEO_INPUTS)
635 return -EINVAL;
636
637 if (dev->status != STATUS_IDLE)
638 return -EAGAIN;
639
640 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
641 if (!retval)
642 dev->options.video_input = index;
643
644 return retval;
645}
646
647static int vidioc_g_input(struct file *file, void *private_data,
648 unsigned int *index)
649{
650 struct hdpvr_fh *fh = file->private_data;
651 struct hdpvr_device *dev = fh->dev;
652
653 *index = dev->options.video_input;
654 return 0;
655}
656
657
658static const char *audio_iname[] = {
659 [HDPVR_RCA_FRONT] = "RCA front",
660 [HDPVR_RCA_BACK] = "RCA back",
661 [HDPVR_SPDIF] = "SPDIF",
662};
663
664static int vidioc_enumaudio(struct file *file, void *priv,
665 struct v4l2_audio *audio)
666{
667 unsigned int n;
668
669 n = audio->index;
670 if (n >= HDPVR_AUDIO_INPUTS)
671 return -EINVAL;
672
673 audio->capability = V4L2_AUDCAP_STEREO;
674
675 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
676 audio->name[sizeof(audio->name) - 1] = '\0';
677
678 return 0;
679}
680
681static int vidioc_s_audio(struct file *file, void *private_data,
682 struct v4l2_audio *audio)
683{
684 struct hdpvr_fh *fh = file->private_data;
685 struct hdpvr_device *dev = fh->dev;
686 int retval;
687
688 if (audio->index >= HDPVR_AUDIO_INPUTS)
689 return -EINVAL;
690
691 if (dev->status != STATUS_IDLE)
692 return -EAGAIN;
693
694 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
695 if (!retval)
696 dev->options.audio_input = audio->index;
697
698 return retval;
699}
700
701static int vidioc_g_audio(struct file *file, void *private_data,
702 struct v4l2_audio *audio)
703{
704 struct hdpvr_fh *fh = file->private_data;
705 struct hdpvr_device *dev = fh->dev;
706
707 audio->index = dev->options.audio_input;
708 audio->capability = V4L2_AUDCAP_STEREO;
709 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
710 audio->name[sizeof(audio->name) - 1] = '\0';
711 return 0;
712}
713
714static const s32 supported_v4l2_ctrls[] = {
715 V4L2_CID_BRIGHTNESS,
716 V4L2_CID_CONTRAST,
717 V4L2_CID_SATURATION,
718 V4L2_CID_HUE,
719 V4L2_CID_SHARPNESS,
720 V4L2_CID_MPEG_AUDIO_ENCODING,
721 V4L2_CID_MPEG_VIDEO_ENCODING,
722 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
723 V4L2_CID_MPEG_VIDEO_BITRATE,
724 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
725};
726
727static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc,
728 int ac3)
729{
730 int err;
731
732 switch (qc->id) {
733 case V4L2_CID_BRIGHTNESS:
734 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86);
735 case V4L2_CID_CONTRAST:
736 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
737 case V4L2_CID_SATURATION:
738 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
739 case V4L2_CID_HUE:
740 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
741 case V4L2_CID_SHARPNESS:
742 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
743 case V4L2_CID_MPEG_AUDIO_ENCODING:
744 return v4l2_ctrl_query_fill(
745 qc, V4L2_MPEG_AUDIO_ENCODING_AAC,
746 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3
747 : V4L2_MPEG_AUDIO_ENCODING_AAC,
748 1, V4L2_MPEG_AUDIO_ENCODING_AAC);
749 case V4L2_CID_MPEG_VIDEO_ENCODING:
750 return v4l2_ctrl_query_fill(
751 qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC,
752 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1,
753 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
754
755/* case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */
756/* return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */
757 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
758 return v4l2_ctrl_query_fill(
759 qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
760 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
761 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
762
763 case V4L2_CID_MPEG_VIDEO_BITRATE:
764 return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000,
765 6500000);
766 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
767 err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000,
768 9000000);
769 if (!err && opt->bitrate_mode == HDPVR_CONSTANT)
770 qc->flags |= V4L2_CTRL_FLAG_INACTIVE;
771 return err;
772 default:
773 return -EINVAL;
774 }
775}
776
777static int vidioc_queryctrl(struct file *file, void *private_data,
778 struct v4l2_queryctrl *qc)
779{
780 struct hdpvr_fh *fh = file->private_data;
781 struct hdpvr_device *dev = fh->dev;
782 int i, next;
783 u32 id = qc->id;
784
785 memset(qc, 0, sizeof(*qc));
786
787 next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
788 qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
789
790 for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) {
791 if (next) {
792 if (qc->id < supported_v4l2_ctrls[i])
793 qc->id = supported_v4l2_ctrls[i];
794 else
795 continue;
796 }
797
798 if (qc->id == supported_v4l2_ctrls[i])
799 return fill_queryctrl(&dev->options, qc,
800 dev->flags & HDPVR_FLAG_AC3_CAP);
801
802 if (qc->id < supported_v4l2_ctrls[i])
803 break;
804 }
805
806 return -EINVAL;
807}
808
809static int vidioc_g_ctrl(struct file *file, void *private_data,
810 struct v4l2_control *ctrl)
811{
812 struct hdpvr_fh *fh = file->private_data;
813 struct hdpvr_device *dev = fh->dev;
814
815 switch (ctrl->id) {
816 case V4L2_CID_BRIGHTNESS:
817 ctrl->value = dev->options.brightness;
818 break;
819 case V4L2_CID_CONTRAST:
820 ctrl->value = dev->options.contrast;
821 break;
822 case V4L2_CID_SATURATION:
823 ctrl->value = dev->options.saturation;
824 break;
825 case V4L2_CID_HUE:
826 ctrl->value = dev->options.hue;
827 break;
828 case V4L2_CID_SHARPNESS:
829 ctrl->value = dev->options.sharpness;
830 break;
831 default:
832 return -EINVAL;
833 }
834 return 0;
835}
836
837static int vidioc_s_ctrl(struct file *file, void *private_data,
838 struct v4l2_control *ctrl)
839{
840 struct hdpvr_fh *fh = file->private_data;
841 struct hdpvr_device *dev = fh->dev;
842 int retval;
843
844 switch (ctrl->id) {
845 case V4L2_CID_BRIGHTNESS:
846 retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value);
847 if (!retval)
848 dev->options.brightness = ctrl->value;
849 break;
850 case V4L2_CID_CONTRAST:
851 retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value);
852 if (!retval)
853 dev->options.contrast = ctrl->value;
854 break;
855 case V4L2_CID_SATURATION:
856 retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value);
857 if (!retval)
858 dev->options.saturation = ctrl->value;
859 break;
860 case V4L2_CID_HUE:
861 retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value);
862 if (!retval)
863 dev->options.hue = ctrl->value;
864 break;
865 case V4L2_CID_SHARPNESS:
866 retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value);
867 if (!retval)
868 dev->options.sharpness = ctrl->value;
869 break;
870 default:
871 return -EINVAL;
872 }
873
874 return retval;
875}
876
877
878static int hdpvr_get_ctrl(struct hdpvr_options *opt,
879 struct v4l2_ext_control *ctrl)
880{
881 switch (ctrl->id) {
882 case V4L2_CID_MPEG_AUDIO_ENCODING:
883 ctrl->value = opt->audio_codec;
884 break;
885 case V4L2_CID_MPEG_VIDEO_ENCODING:
886 ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC;
887 break;
888/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
889/* ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */
890/* break; */
891 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
892 ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT
893 ? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR
894 : V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
895 break;
896 case V4L2_CID_MPEG_VIDEO_BITRATE:
897 ctrl->value = opt->bitrate * 100000;
898 break;
899 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
900 ctrl->value = opt->peak_bitrate * 100000;
901 break;
902 case V4L2_CID_MPEG_STREAM_TYPE:
903 ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
904 break;
905 default:
906 return -EINVAL;
907 }
908 return 0;
909}
910
911static int vidioc_g_ext_ctrls(struct file *file, void *priv,
912 struct v4l2_ext_controls *ctrls)
913{
914 struct hdpvr_fh *fh = file->private_data;
915 struct hdpvr_device *dev = fh->dev;
916 int i, err = 0;
917
918 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
919 for (i = 0; i < ctrls->count; i++) {
920 struct v4l2_ext_control *ctrl = ctrls->controls + i;
921
922 err = hdpvr_get_ctrl(&dev->options, ctrl);
923 if (err) {
924 ctrls->error_idx = i;
925 break;
926 }
927 }
928 return err;
929
930 }
931
932 return -EINVAL;
933}
934
935
936static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
937{
938 int ret = -EINVAL;
939
940 switch (ctrl->id) {
941 case V4L2_CID_MPEG_AUDIO_ENCODING:
942 if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC ||
943 (ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3))
944 ret = 0;
945 break;
946 case V4L2_CID_MPEG_VIDEO_ENCODING:
947 if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC)
948 ret = 0;
949 break;
950/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
951/* if (ctrl->value == 0 || ctrl->value == 128) */
952/* ret = 0; */
953/* break; */
954 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
955 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR ||
956 ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
957 ret = 0;
958 break;
959 case V4L2_CID_MPEG_VIDEO_BITRATE:
960 {
961 uint bitrate = ctrl->value / 100000;
962 if (bitrate >= 10 && bitrate <= 135)
963 ret = 0;
964 break;
965 }
966 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
967 {
968 uint peak_bitrate = ctrl->value / 100000;
969 if (peak_bitrate >= 10 && peak_bitrate <= 202)
970 ret = 0;
971 break;
972 }
973 case V4L2_CID_MPEG_STREAM_TYPE:
974 if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
975 ret = 0;
976 break;
977 default:
978 return -EINVAL;
979 }
980 return 0;
981}
982
983static int vidioc_try_ext_ctrls(struct file *file, void *priv,
984 struct v4l2_ext_controls *ctrls)
985{
986 struct hdpvr_fh *fh = file->private_data;
987 struct hdpvr_device *dev = fh->dev;
988 int i, err = 0;
989
990 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
991 for (i = 0; i < ctrls->count; i++) {
992 struct v4l2_ext_control *ctrl = ctrls->controls + i;
993
994 err = hdpvr_try_ctrl(ctrl,
995 dev->flags & HDPVR_FLAG_AC3_CAP);
996 if (err) {
997 ctrls->error_idx = i;
998 break;
999 }
1000 }
1001 return err;
1002 }
1003
1004 return -EINVAL;
1005}
1006
1007
1008static int hdpvr_set_ctrl(struct hdpvr_device *dev,
1009 struct v4l2_ext_control *ctrl)
1010{
1011 struct hdpvr_options *opt = &dev->options;
1012 int ret = 0;
1013
1014 switch (ctrl->id) {
1015 case V4L2_CID_MPEG_AUDIO_ENCODING:
1016 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
1017 opt->audio_codec = ctrl->value;
1018 ret = hdpvr_set_audio(dev, opt->audio_input,
1019 opt->audio_codec);
1020 }
1021 break;
1022 case V4L2_CID_MPEG_VIDEO_ENCODING:
1023 break;
1024/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
1025/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
1026/* opt->gop_mode |= 0x2; */
1027/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1028/* opt->gop_mode); */
1029/* } */
1030/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
1031/* opt->gop_mode &= ~0x2; */
1032/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1033/* opt->gop_mode); */
1034/* } */
1035/* break; */
1036 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
1037 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR &&
1038 opt->bitrate_mode != HDPVR_CONSTANT) {
1039 opt->bitrate_mode = HDPVR_CONSTANT;
1040 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1041 opt->bitrate_mode);
1042 }
1043 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
1044 opt->bitrate_mode == HDPVR_CONSTANT) {
1045 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
1046 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1047 opt->bitrate_mode);
1048 }
1049 break;
1050 case V4L2_CID_MPEG_VIDEO_BITRATE: {
1051 uint bitrate = ctrl->value / 100000;
1052
1053 opt->bitrate = bitrate;
1054 if (bitrate >= opt->peak_bitrate)
1055 opt->peak_bitrate = bitrate+1;
1056
1057 hdpvr_set_bitrate(dev);
1058 break;
1059 }
1060 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: {
1061 uint peak_bitrate = ctrl->value / 100000;
1062
1063 if (opt->bitrate_mode == HDPVR_CONSTANT)
1064 break;
1065
1066 if (opt->bitrate < peak_bitrate) {
1067 opt->peak_bitrate = peak_bitrate;
1068 hdpvr_set_bitrate(dev);
1069 } else
1070 ret = -EINVAL;
1071 break;
1072 }
1073 case V4L2_CID_MPEG_STREAM_TYPE:
1074 break;
1075 default:
1076 return -EINVAL;
1077 }
1078 return ret;
1079}
1080
1081static int vidioc_s_ext_ctrls(struct file *file, void *priv,
1082 struct v4l2_ext_controls *ctrls)
1083{
1084 struct hdpvr_fh *fh = file->private_data;
1085 struct hdpvr_device *dev = fh->dev;
1086 int i, err = 0;
1087
1088 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
1089 for (i = 0; i < ctrls->count; i++) {
1090 struct v4l2_ext_control *ctrl = ctrls->controls + i;
1091
1092 err = hdpvr_try_ctrl(ctrl,
1093 dev->flags & HDPVR_FLAG_AC3_CAP);
1094 if (err) {
1095 ctrls->error_idx = i;
1096 break;
1097 }
1098 err = hdpvr_set_ctrl(dev, ctrl);
1099 if (err) {
1100 ctrls->error_idx = i;
1101 break;
1102 }
1103 }
1104 return err;
1105
1106 }
1107
1108 return -EINVAL;
1109}
1110
1111static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
1112 struct v4l2_fmtdesc *f)
1113{
1114
1115 if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1116 return -EINVAL;
1117
1118 f->flags = V4L2_FMT_FLAG_COMPRESSED;
1119 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
1120 f->pixelformat = V4L2_PIX_FMT_MPEG;
1121
1122 return 0;
1123}
1124
1125static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
1126 struct v4l2_format *f)
1127{
1128 struct hdpvr_fh *fh = file->private_data;
1129 struct hdpvr_device *dev = fh->dev;
1130 struct hdpvr_video_info *vid_info;
1131
1132 if (!dev)
1133 return -ENODEV;
1134
1135 vid_info = get_video_info(dev);
1136 if (!vid_info)
1137 return -EFAULT;
1138
1139 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1140 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1141 f->fmt.pix.width = vid_info->width;
1142 f->fmt.pix.height = vid_info->height;
1143 f->fmt.pix.sizeimage = dev->bulk_in_size;
1144 f->fmt.pix.colorspace = 0;
1145 f->fmt.pix.bytesperline = 0;
1146 f->fmt.pix.field = V4L2_FIELD_ANY;
1147
1148 kfree(vid_info);
1149 return 0;
1150}
1151
76717b88
JG		 1152static int vidioc_encoder_cmd(struct file *filp, void *priv,
1153 struct v4l2_encoder_cmd *a)
1154{
1155 struct hdpvr_fh *fh = filp->private_data;
1156 struct hdpvr_device *dev = fh->dev;
1157 int res;
1158
1159 mutex_lock(&dev->io_mutex);
1160
1161 memset(&a->raw, 0, sizeof(a->raw));
1162 switch (a->cmd) {
1163 case V4L2_ENC_CMD_START:
1164 a->flags = 0;
1165 res = hdpvr_start_streaming(dev);
1166 break;
1167 case V4L2_ENC_CMD_STOP:
1168 res = hdpvr_stop_streaming(dev);
1169 break;
1170 default:
9ef77adf 1171 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
76717b88 1172 "Unsupported encoder cmd %d\n", a->cmd);
48f98f75 1173 res = -EINVAL;
76717b88
JG		 1174 }
1175 mutex_unlock(&dev->io_mutex);
1176 return res;
1177}
1178
1179static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1180 struct v4l2_encoder_cmd *a)
1181{
1182 switch (a->cmd) {
1183 case V4L2_ENC_CMD_START:
1184 case V4L2_ENC_CMD_STOP:
1185 return 0;
1186 default:
1187 return -EINVAL;
1188 }
1189}
9aba42ef
JG		 1190
1191static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1192 .vidioc_querycap = vidioc_querycap,
1193 .vidioc_s_std = vidioc_s_std,
1194 .vidioc_enum_input = vidioc_enum_input,
1195 .vidioc_g_input = vidioc_g_input,
1196 .vidioc_s_input = vidioc_s_input,
1197 .vidioc_enumaudio = vidioc_enumaudio,
1198 .vidioc_g_audio = vidioc_g_audio,
1199 .vidioc_s_audio = vidioc_s_audio,
1200 .vidioc_queryctrl = vidioc_queryctrl,
1201 .vidioc_g_ctrl = vidioc_g_ctrl,
1202 .vidioc_s_ctrl = vidioc_s_ctrl,
1203 .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls,
1204 .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
1205 .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
1206 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1207 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
76717b88
JG		 1208 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1209 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
9aba42ef
JG		 1210};
1211
1212static void hdpvr_device_release(struct video_device *vdev)
1213{
1214 struct hdpvr_device *dev = video_get_drvdata(vdev);
1215
1216 hdpvr_delete(dev);
1217}
1218
1219static const struct video_device hdpvr_video_template = {
1220/* .type = VFL_TYPE_GRABBER, */
1221/* .type2 = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */
1222 .fops = &hdpvr_fops,
1223 .release = hdpvr_device_release,
1224 .ioctl_ops = &hdpvr_ioctl_ops,
1225 .tvnorms =
1226 V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_B |
1227 V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I |
1228 V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N |
1229 V4L2_STD_PAL_60,
99362e1e
HV		 1230 .current_norm = V4L2_STD_NTSC | V4L2_STD_PAL_M |
1231 V4L2_STD_PAL_60,
9aba42ef
JG		 1232};
1233
a50ab291
JG		 1234int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1235 int devnum)
9aba42ef
JG		 1236{
1237 /* setup and register video device */
1238 dev->video_dev = video_device_alloc();
1239 if (!dev->video_dev) {
9ef77adf 1240 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
9aba42ef
JG		 1241 goto error;
1242 }
1243
1244 *(dev->video_dev) = hdpvr_video_template;
1245 strcpy(dev->video_dev->name, "Hauppauge HD PVR");
a50ab291 1246 dev->video_dev->parent = parent;
9aba42ef
JG		 1247 video_set_drvdata(dev->video_dev, dev);
1248
1249 if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) {
9ef77adf 1250 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
9aba42ef
JG		 1251 goto error;
1252 }
1253
1254 return 0;
1255error:
1256 return -ENOMEM;
1257}
Linux kernel - Deliverables
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