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[media] omap3isp: Fix crash caused by subdevs now having a pointer to devnodes
[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>
9aba42ef
JG		 20#include <linux/workqueue.h>
21
22#include <linux/videodev2.h>
23#include <media/v4l2-dev.h>
24#include <media/v4l2-common.h>
25#include <media/v4l2-ioctl.h>
26#include "hdpvr.h"
27
39bcb3ae 28#define BULK_URB_TIMEOUT 90 /* 0.09 seconds */
9aba42ef 29
9ef77adf
JG		 30#define print_buffer_status() { \
31 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \
32 "%s:%d buffer stat: %d free, %d proc\n", \
33 __func__, __LINE__, \
34 list_size(&dev->free_buff_list), \
35 list_size(&dev->rec_buff_list)); }
d211bfcb 36
9aba42ef
JG		 37struct hdpvr_fh {
38 struct hdpvr_device *dev;
39};
40
41static uint list_size(struct list_head *list)
42{
43 struct list_head *tmp;
44 uint count = 0;
45
46 list_for_each(tmp, list) {
47 count++;
48 }
49
50 return count;
51}
52
53/*=========================================================================*/
54/* urb callback */
55static void hdpvr_read_bulk_callback(struct urb *urb)
56{
57 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
58 struct hdpvr_device *dev = buf->dev;
59
60 /* marking buffer as received and wake waiting */
61 buf->status = BUFSTAT_READY;
62 wake_up_interruptible(&dev->wait_data);
63}
64
65/*=========================================================================*/
66/* bufffer bits */
67
68/* function expects dev->io_mutex to be hold by caller */
69int hdpvr_cancel_queue(struct hdpvr_device *dev)
70{
71 struct hdpvr_buffer *buf;
72
73 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
74 usb_kill_urb(buf->urb);
75 buf->status = BUFSTAT_AVAILABLE;
76 }
77
78 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
79
80 return 0;
81}
82
83static int hdpvr_free_queue(struct list_head *q)
84{
85 struct list_head *tmp;
86 struct list_head *p;
87 struct hdpvr_buffer *buf;
88 struct urb *urb;
89
90 for (p = q->next; p != q;) {
91 buf = list_entry(p, struct hdpvr_buffer, buff_list);
92
93 urb = buf->urb;
997ea58e
DM		 94 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
95 urb->transfer_buffer, urb->transfer_dma);
9aba42ef
JG		 96 usb_free_urb(urb);
97 tmp = p->next;
98 list_del(p);
99 kfree(buf);
100 p = tmp;
101 }
102
103 return 0;
104}
105
106/* function expects dev->io_mutex to be hold by caller */
107int hdpvr_free_buffers(struct hdpvr_device *dev)
108{
109 hdpvr_cancel_queue(dev);
110
111 hdpvr_free_queue(&dev->free_buff_list);
112 hdpvr_free_queue(&dev->rec_buff_list);
113
114 return 0;
115}
116
117/* function expects dev->io_mutex to be hold by caller */
118int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
119{
120 uint i;
121 int retval = -ENOMEM;
122 u8 *mem;
123 struct hdpvr_buffer *buf;
124 struct urb *urb;
125
9ef77adf 126 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef
JG		 127 "allocating %u buffers\n", count);
128
129 for (i = 0; i < count; i++) {
130
131 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
132 if (!buf) {
9ef77adf 133 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
9aba42ef
JG		 134 goto exit;
135 }
136 buf->dev = dev;
137
138 urb = usb_alloc_urb(0, GFP_KERNEL);
139 if (!urb) {
9ef77adf 140 v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
cd0e280f 141 goto exit_urb;
9aba42ef
JG		 142 }
143 buf->urb = urb;
144
997ea58e
DM		 145 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
146 &urb->transfer_dma);
9aba42ef 147 if (!mem) {
9ef77adf
JG		 148 v4l2_err(&dev->v4l2_dev,
149 "cannot allocate usb transfer buffer\n");
cd0e280f 150 goto exit_urb_buffer;
9aba42ef
JG		 151 }
152
153 usb_fill_bulk_urb(buf->urb, dev->udev,
154 usb_rcvbulkpipe(dev->udev,
155 dev->bulk_in_endpointAddr),
156 mem, dev->bulk_in_size,
157 hdpvr_read_bulk_callback, buf);
158
4f5c933a 159 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
9aba42ef
JG		 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)) {
7d771ff0
JG		 340 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
341 "%2d: got %d bytes\n", c, actual_length);
342 }
343 kfree(buf);
344 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
345 "used %d urbs to empty device buffers\n", c-1);
346 msleep(10);
347
9aba42ef
JG		 348 dev->status = STATUS_IDLE;
349
350 return 0;
351}
352
353
354/*=======================================================================*/
355/*
356 * video 4 linux 2 file operations
357 */
358
359static int hdpvr_open(struct file *file)
360{
361 struct hdpvr_device *dev;
362 struct hdpvr_fh *fh;
363 int retval = -ENOMEM;
364
365 dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
366 if (!dev) {
4202066c 367 pr_err("open failing with with ENODEV\n");
9aba42ef
JG		 368 retval = -ENODEV;
369 goto err;
370 }
371
372 fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL);
373 if (!fh) {
9ef77adf 374 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
9aba42ef
JG		 375 goto err;
376 }
377 /* lock the device to allow correctly handling errors
378 * in resumption */
379 mutex_lock(&dev->io_mutex);
380 dev->open_count++;
00c1e216 381 mutex_unlock(&dev->io_mutex);
9aba42ef
JG		 382
383 fh->dev = dev;
384
385 /* save our object in the file's private structure */
386 file->private_data = fh;
387
388 retval = 0;
389err:
9aba42ef
JG		 390 return retval;
391}
392
393static int hdpvr_release(struct file *file)
394{
abf84383 395 struct hdpvr_fh *fh = file->private_data;
9aba42ef
JG		 396 struct hdpvr_device *dev = fh->dev;
397
398 if (!dev)
399 return -ENODEV;
400
401 mutex_lock(&dev->io_mutex);
402 if (!(--dev->open_count) && dev->status == STATUS_STREAMING)
403 hdpvr_stop_streaming(dev);
404
405 mutex_unlock(&dev->io_mutex);
406
407 return 0;
408}
409
410/*
411 * hdpvr_v4l2_read()
412 * will allocate buffers when called for the first time
413 */
414static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
415 loff_t *pos)
416{
417 struct hdpvr_fh *fh = file->private_data;
418 struct hdpvr_device *dev = fh->dev;
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 if (!dev)
428 return -ENODEV;
429
430 mutex_lock(&dev->io_mutex);
431 if (dev->status == STATUS_IDLE) {
432 if (hdpvr_start_streaming(dev)) {
9ef77adf
JG		 433 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
434 "start_streaming failed\n");
9aba42ef
JG		 435 ret = -EIO;
436 msleep(200);
437 dev->status = STATUS_IDLE;
438 mutex_unlock(&dev->io_mutex);
439 goto err;
440 }
d211bfcb 441 print_buffer_status();
9aba42ef
JG		 442 }
443 mutex_unlock(&dev->io_mutex);
444
445 /* wait for the first buffer */
446 if (!(file->f_flags & O_NONBLOCK)) {
447 if (wait_event_interruptible(dev->wait_data,
448 hdpvr_get_next_buffer(dev)))
449 return -ERESTARTSYS;
450 }
451
452 buf = hdpvr_get_next_buffer(dev);
453
454 while (count > 0 && buf) {
455
456 if (buf->status != BUFSTAT_READY &&
457 dev->status != STATUS_DISCONNECTED) {
458 /* return nonblocking */
459 if (file->f_flags & O_NONBLOCK) {
460 if (!ret)
461 ret = -EAGAIN;
462 goto err;
463 }
464
465 if (wait_event_interruptible(dev->wait_data,
466 buf->status == BUFSTAT_READY)) {
467 ret = -ERESTARTSYS;
468 goto err;
469 }
470 }
471
472 if (buf->status != BUFSTAT_READY)
473 break;
474
475 /* set remaining bytes to copy */
476 urb = buf->urb;
477 rem = urb->actual_length - buf->pos;
478 cnt = rem > count ? count : rem;
479
480 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
481 cnt)) {
9ef77adf 482 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
9aba42ef
JG		 483 if (!ret)
484 ret = -EFAULT;
485 goto err;
486 }
487
488 buf->pos += cnt;
489 count -= cnt;
490 buffer += cnt;
491 ret += cnt;
492
493 /* finished, take next buffer */
494 if (buf->pos == urb->actual_length) {
495 mutex_lock(&dev->io_mutex);
496 buf->pos = 0;
497 buf->status = BUFSTAT_AVAILABLE;
498
499 list_move_tail(&buf->buff_list, &dev->free_buff_list);
500
d211bfcb 501 print_buffer_status();
9aba42ef
JG		 502
503 mutex_unlock(&dev->io_mutex);
504
505 wake_up_interruptible(&dev->wait_buffer);
506
507 buf = hdpvr_get_next_buffer(dev);
508 }
509 }
510err:
511 if (!ret && !buf)
512 ret = -EAGAIN;
513 return ret;
514}
515
516static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
517{
d2ff3ec8 518 struct hdpvr_buffer *buf = NULL;
abf84383 519 struct hdpvr_fh *fh = filp->private_data;
9aba42ef
JG		 520 struct hdpvr_device *dev = fh->dev;
521 unsigned int mask = 0;
522
523 mutex_lock(&dev->io_mutex);
524
957b4aa9 525 if (!video_is_registered(dev->video_dev)) {
00c1e216 526 mutex_unlock(&dev->io_mutex);
9aba42ef 527 return -EIO;
00c1e216 528 }
9aba42ef
JG		 529
530 if (dev->status == STATUS_IDLE) {
531 if (hdpvr_start_streaming(dev)) {
9ef77adf
JG		 532 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
533 "start_streaming failed\n");
9aba42ef
JG		 534 dev->status = STATUS_IDLE;
535 }
536
d211bfcb 537 print_buffer_status();
9aba42ef
JG		 538 }
539 mutex_unlock(&dev->io_mutex);
540
d2ff3ec8
JG		 541 buf = hdpvr_get_next_buffer(dev);
542 /* only wait if no data is available */
543 if (!buf || buf->status != BUFSTAT_READY) {
544 poll_wait(filp, &dev->wait_data, wait);
545 buf = hdpvr_get_next_buffer(dev);
9aba42ef 546 }
d2ff3ec8
JG		 547 if (buf && buf->status == BUFSTAT_READY)
548 mask |= POLLIN | POLLRDNORM;
9aba42ef
JG		 549
550 return mask;
551}
552
553
9aba42ef
JG		 554static const struct v4l2_file_operations hdpvr_fops = {
555 .owner = THIS_MODULE,
556 .open = hdpvr_open,
557 .release = hdpvr_release,
558 .read = hdpvr_read,
559 .poll = hdpvr_poll,
76717b88 560 .unlocked_ioctl = video_ioctl2,
9aba42ef
JG		 561};
562
563/*=======================================================================*/
564/*
565 * V4L2 ioctl handling
566 */
567
568static int vidioc_querycap(struct file *file, void *priv,
569 struct v4l2_capability *cap)
570{
571 struct hdpvr_device *dev = video_drvdata(file);
572
573 strcpy(cap->driver, "hdpvr");
fdd70c33 574 strcpy(cap->card, "Hauppauge HD PVR");
9aba42ef 575 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
9aba42ef
JG		 576 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
577 V4L2_CAP_AUDIO |
578 V4L2_CAP_READWRITE;
579 return 0;
580}
581
582static int vidioc_s_std(struct file *file, void *private_data,
583 v4l2_std_id *std)
584{
585 struct hdpvr_fh *fh = file->private_data;
586 struct hdpvr_device *dev = fh->dev;
587 u8 std_type = 1;
588
589 if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60))
590 std_type = 0;
591
592 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
593}
594
595static const char *iname[] = {
596 [HDPVR_COMPONENT] = "Component",
597 [HDPVR_SVIDEO] = "S-Video",
598 [HDPVR_COMPOSITE] = "Composite",
599};
600
601static int vidioc_enum_input(struct file *file, void *priv,
602 struct v4l2_input *i)
603{
604 struct hdpvr_fh *fh = file->private_data;
605 struct hdpvr_device *dev = fh->dev;
606 unsigned int n;
607
608 n = i->index;
609 if (n >= HDPVR_VIDEO_INPUTS)
610 return -EINVAL;
611
612 i->type = V4L2_INPUT_TYPE_CAMERA;
613
614 strncpy(i->name, iname[n], sizeof(i->name) - 1);
615 i->name[sizeof(i->name) - 1] = '\0';
616
617 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
618
619 i->std = dev->video_dev->tvnorms;
620
621 return 0;
622}
623
624static int vidioc_s_input(struct file *file, void *private_data,
625 unsigned int index)
626{
627 struct hdpvr_fh *fh = file->private_data;
628 struct hdpvr_device *dev = fh->dev;
629 int retval;
630
631 if (index >= HDPVR_VIDEO_INPUTS)
632 return -EINVAL;
633
634 if (dev->status != STATUS_IDLE)
635 return -EAGAIN;
636
637 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
638 if (!retval)
639 dev->options.video_input = index;
640
641 return retval;
642}
643
644static int vidioc_g_input(struct file *file, void *private_data,
645 unsigned int *index)
646{
647 struct hdpvr_fh *fh = file->private_data;
648 struct hdpvr_device *dev = fh->dev;
649
650 *index = dev->options.video_input;
651 return 0;
652}
653
654
655static const char *audio_iname[] = {
656 [HDPVR_RCA_FRONT] = "RCA front",
657 [HDPVR_RCA_BACK] = "RCA back",
658 [HDPVR_SPDIF] = "SPDIF",
659};
660
661static int vidioc_enumaudio(struct file *file, void *priv,
662 struct v4l2_audio *audio)
663{
664 unsigned int n;
665
666 n = audio->index;
667 if (n >= HDPVR_AUDIO_INPUTS)
668 return -EINVAL;
669
670 audio->capability = V4L2_AUDCAP_STEREO;
671
672 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
673 audio->name[sizeof(audio->name) - 1] = '\0';
674
675 return 0;
676}
677
678static int vidioc_s_audio(struct file *file, void *private_data,
679 struct v4l2_audio *audio)
680{
681 struct hdpvr_fh *fh = file->private_data;
682 struct hdpvr_device *dev = fh->dev;
683 int retval;
684
685 if (audio->index >= HDPVR_AUDIO_INPUTS)
686 return -EINVAL;
687
688 if (dev->status != STATUS_IDLE)
689 return -EAGAIN;
690
691 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
692 if (!retval)
693 dev->options.audio_input = audio->index;
694
695 return retval;
696}
697
698static int vidioc_g_audio(struct file *file, void *private_data,
699 struct v4l2_audio *audio)
700{
701 struct hdpvr_fh *fh = file->private_data;
702 struct hdpvr_device *dev = fh->dev;
703
704 audio->index = dev->options.audio_input;
705 audio->capability = V4L2_AUDCAP_STEREO;
706 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
707 audio->name[sizeof(audio->name) - 1] = '\0';
708 return 0;
709}
710
711static const s32 supported_v4l2_ctrls[] = {
712 V4L2_CID_BRIGHTNESS,
713 V4L2_CID_CONTRAST,
714 V4L2_CID_SATURATION,
715 V4L2_CID_HUE,
716 V4L2_CID_SHARPNESS,
717 V4L2_CID_MPEG_AUDIO_ENCODING,
718 V4L2_CID_MPEG_VIDEO_ENCODING,
719 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
720 V4L2_CID_MPEG_VIDEO_BITRATE,
721 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
722};
723
724static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc,
725 int ac3)
726{
727 int err;
728
729 switch (qc->id) {
730 case V4L2_CID_BRIGHTNESS:
731 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86);
732 case V4L2_CID_CONTRAST:
733 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
734 case V4L2_CID_SATURATION:
735 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
736 case V4L2_CID_HUE:
737 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
738 case V4L2_CID_SHARPNESS:
739 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
740 case V4L2_CID_MPEG_AUDIO_ENCODING:
741 return v4l2_ctrl_query_fill(
742 qc, V4L2_MPEG_AUDIO_ENCODING_AAC,
743 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3
744 : V4L2_MPEG_AUDIO_ENCODING_AAC,
745 1, V4L2_MPEG_AUDIO_ENCODING_AAC);
746 case V4L2_CID_MPEG_VIDEO_ENCODING:
747 return v4l2_ctrl_query_fill(
748 qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC,
749 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1,
750 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
751
752/* case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */
753/* return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */
754 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
755 return v4l2_ctrl_query_fill(
756 qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
757 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
758 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
759
760 case V4L2_CID_MPEG_VIDEO_BITRATE:
761 return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000,
762 6500000);
763 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
764 err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000,
765 9000000);
766 if (!err && opt->bitrate_mode == HDPVR_CONSTANT)
767 qc->flags |= V4L2_CTRL_FLAG_INACTIVE;
768 return err;
769 default:
770 return -EINVAL;
771 }
772}
773
774static int vidioc_queryctrl(struct file *file, void *private_data,
775 struct v4l2_queryctrl *qc)
776{
777 struct hdpvr_fh *fh = file->private_data;
778 struct hdpvr_device *dev = fh->dev;
779 int i, next;
780 u32 id = qc->id;
781
782 memset(qc, 0, sizeof(*qc));
783
784 next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
785 qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
786
787 for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) {
788 if (next) {
789 if (qc->id < supported_v4l2_ctrls[i])
790 qc->id = supported_v4l2_ctrls[i];
791 else
792 continue;
793 }
794
795 if (qc->id == supported_v4l2_ctrls[i])
796 return fill_queryctrl(&dev->options, qc,
797 dev->flags & HDPVR_FLAG_AC3_CAP);
798
799 if (qc->id < supported_v4l2_ctrls[i])
800 break;
801 }
802
803 return -EINVAL;
804}
805
806static int vidioc_g_ctrl(struct file *file, void *private_data,
807 struct v4l2_control *ctrl)
808{
809 struct hdpvr_fh *fh = file->private_data;
810 struct hdpvr_device *dev = fh->dev;
811
812 switch (ctrl->id) {
813 case V4L2_CID_BRIGHTNESS:
814 ctrl->value = dev->options.brightness;
815 break;
816 case V4L2_CID_CONTRAST:
817 ctrl->value = dev->options.contrast;
818 break;
819 case V4L2_CID_SATURATION:
820 ctrl->value = dev->options.saturation;
821 break;
822 case V4L2_CID_HUE:
823 ctrl->value = dev->options.hue;
824 break;
825 case V4L2_CID_SHARPNESS:
826 ctrl->value = dev->options.sharpness;
827 break;
828 default:
829 return -EINVAL;
830 }
831 return 0;
832}
833
834static int vidioc_s_ctrl(struct file *file, void *private_data,
835 struct v4l2_control *ctrl)
836{
837 struct hdpvr_fh *fh = file->private_data;
838 struct hdpvr_device *dev = fh->dev;
839 int retval;
840
841 switch (ctrl->id) {
842 case V4L2_CID_BRIGHTNESS:
843 retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value);
844 if (!retval)
845 dev->options.brightness = ctrl->value;
846 break;
847 case V4L2_CID_CONTRAST:
848 retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value);
849 if (!retval)
850 dev->options.contrast = ctrl->value;
851 break;
852 case V4L2_CID_SATURATION:
853 retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value);
854 if (!retval)
855 dev->options.saturation = ctrl->value;
856 break;
857 case V4L2_CID_HUE:
858 retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value);
859 if (!retval)
860 dev->options.hue = ctrl->value;
861 break;
862 case V4L2_CID_SHARPNESS:
863 retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value);
864 if (!retval)
865 dev->options.sharpness = ctrl->value;
866 break;
867 default:
868 return -EINVAL;
869 }
870
871 return retval;
872}
873
874
875static int hdpvr_get_ctrl(struct hdpvr_options *opt,
876 struct v4l2_ext_control *ctrl)
877{
878 switch (ctrl->id) {
879 case V4L2_CID_MPEG_AUDIO_ENCODING:
880 ctrl->value = opt->audio_codec;
881 break;
882 case V4L2_CID_MPEG_VIDEO_ENCODING:
883 ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC;
884 break;
885/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
886/* ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */
887/* break; */
888 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
889 ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT
890 ? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR
891 : V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
892 break;
893 case V4L2_CID_MPEG_VIDEO_BITRATE:
894 ctrl->value = opt->bitrate * 100000;
895 break;
896 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
897 ctrl->value = opt->peak_bitrate * 100000;
898 break;
899 case V4L2_CID_MPEG_STREAM_TYPE:
900 ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
901 break;
902 default:
903 return -EINVAL;
904 }
905 return 0;
906}
907
908static int vidioc_g_ext_ctrls(struct file *file, void *priv,
909 struct v4l2_ext_controls *ctrls)
910{
911 struct hdpvr_fh *fh = file->private_data;
912 struct hdpvr_device *dev = fh->dev;
913 int i, err = 0;
914
915 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
916 for (i = 0; i < ctrls->count; i++) {
917 struct v4l2_ext_control *ctrl = ctrls->controls + i;
918
919 err = hdpvr_get_ctrl(&dev->options, ctrl);
920 if (err) {
921 ctrls->error_idx = i;
922 break;
923 }
924 }
925 return err;
926
927 }
928
929 return -EINVAL;
930}
931
932
933static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
934{
935 int ret = -EINVAL;
936
937 switch (ctrl->id) {
938 case V4L2_CID_MPEG_AUDIO_ENCODING:
939 if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC ||
940 (ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3))
941 ret = 0;
942 break;
943 case V4L2_CID_MPEG_VIDEO_ENCODING:
944 if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC)
945 ret = 0;
946 break;
947/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
948/* if (ctrl->value == 0 || ctrl->value == 128) */
949/* ret = 0; */
950/* break; */
951 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
952 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR ||
953 ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
954 ret = 0;
955 break;
956 case V4L2_CID_MPEG_VIDEO_BITRATE:
957 {
958 uint bitrate = ctrl->value / 100000;
959 if (bitrate >= 10 && bitrate <= 135)
960 ret = 0;
961 break;
962 }
963 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
964 {
965 uint peak_bitrate = ctrl->value / 100000;
966 if (peak_bitrate >= 10 && peak_bitrate <= 202)
967 ret = 0;
968 break;
969 }
970 case V4L2_CID_MPEG_STREAM_TYPE:
971 if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
972 ret = 0;
973 break;
974 default:
975 return -EINVAL;
976 }
977 return 0;
978}
979
980static int vidioc_try_ext_ctrls(struct file *file, void *priv,
981 struct v4l2_ext_controls *ctrls)
982{
983 struct hdpvr_fh *fh = file->private_data;
984 struct hdpvr_device *dev = fh->dev;
985 int i, err = 0;
986
987 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
988 for (i = 0; i < ctrls->count; i++) {
989 struct v4l2_ext_control *ctrl = ctrls->controls + i;
990
991 err = hdpvr_try_ctrl(ctrl,
992 dev->flags & HDPVR_FLAG_AC3_CAP);
993 if (err) {
994 ctrls->error_idx = i;
995 break;
996 }
997 }
998 return err;
999 }
1000
1001 return -EINVAL;
1002}
1003
1004
1005static int hdpvr_set_ctrl(struct hdpvr_device *dev,
1006 struct v4l2_ext_control *ctrl)
1007{
1008 struct hdpvr_options *opt = &dev->options;
1009 int ret = 0;
1010
1011 switch (ctrl->id) {
1012 case V4L2_CID_MPEG_AUDIO_ENCODING:
1013 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
1014 opt->audio_codec = ctrl->value;
1015 ret = hdpvr_set_audio(dev, opt->audio_input,
1016 opt->audio_codec);
1017 }
1018 break;
1019 case V4L2_CID_MPEG_VIDEO_ENCODING:
1020 break;
1021/* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
1022/* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
1023/* opt->gop_mode |= 0x2; */
1024/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1025/* opt->gop_mode); */
1026/* } */
1027/* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
1028/* opt->gop_mode &= ~0x2; */
1029/* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1030/* opt->gop_mode); */
1031/* } */
1032/* break; */
1033 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
1034 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR &&
1035 opt->bitrate_mode != HDPVR_CONSTANT) {
1036 opt->bitrate_mode = HDPVR_CONSTANT;
1037 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1038 opt->bitrate_mode);
1039 }
1040 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
1041 opt->bitrate_mode == HDPVR_CONSTANT) {
1042 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
1043 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1044 opt->bitrate_mode);
1045 }
1046 break;
1047 case V4L2_CID_MPEG_VIDEO_BITRATE: {
1048 uint bitrate = ctrl->value / 100000;
1049
1050 opt->bitrate = bitrate;
1051 if (bitrate >= opt->peak_bitrate)
1052 opt->peak_bitrate = bitrate+1;
1053
1054 hdpvr_set_bitrate(dev);
1055 break;
1056 }
1057 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: {
1058 uint peak_bitrate = ctrl->value / 100000;
1059
1060 if (opt->bitrate_mode == HDPVR_CONSTANT)
1061 break;
1062
1063 if (opt->bitrate < peak_bitrate) {
1064 opt->peak_bitrate = peak_bitrate;
1065 hdpvr_set_bitrate(dev);
1066 } else
1067 ret = -EINVAL;
1068 break;
1069 }
1070 case V4L2_CID_MPEG_STREAM_TYPE:
1071 break;
1072 default:
1073 return -EINVAL;
1074 }
1075 return ret;
1076}
1077
1078static int vidioc_s_ext_ctrls(struct file *file, void *priv,
1079 struct v4l2_ext_controls *ctrls)
1080{
1081 struct hdpvr_fh *fh = file->private_data;
1082 struct hdpvr_device *dev = fh->dev;
1083 int i, err = 0;
1084
1085 if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
1086 for (i = 0; i < ctrls->count; i++) {
1087 struct v4l2_ext_control *ctrl = ctrls->controls + i;
1088
1089 err = hdpvr_try_ctrl(ctrl,
1090 dev->flags & HDPVR_FLAG_AC3_CAP);
1091 if (err) {
1092 ctrls->error_idx = i;
1093 break;
1094 }
1095 err = hdpvr_set_ctrl(dev, ctrl);
1096 if (err) {
1097 ctrls->error_idx = i;
1098 break;
1099 }
1100 }
1101 return err;
1102
1103 }
1104
1105 return -EINVAL;
1106}
1107
1108static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
1109 struct v4l2_fmtdesc *f)
1110{
1111
1112 if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1113 return -EINVAL;
1114
1115 f->flags = V4L2_FMT_FLAG_COMPRESSED;
1116 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
1117 f->pixelformat = V4L2_PIX_FMT_MPEG;
1118
1119 return 0;
1120}
1121
1122static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
1123 struct v4l2_format *f)
1124{
1125 struct hdpvr_fh *fh = file->private_data;
1126 struct hdpvr_device *dev = fh->dev;
1127 struct hdpvr_video_info *vid_info;
1128
1129 if (!dev)
1130 return -ENODEV;
1131
1132 vid_info = get_video_info(dev);
1133 if (!vid_info)
1134 return -EFAULT;
1135
1136 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1137 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
1138 f->fmt.pix.width = vid_info->width;
1139 f->fmt.pix.height = vid_info->height;
1140 f->fmt.pix.sizeimage = dev->bulk_in_size;
1141 f->fmt.pix.colorspace = 0;
1142 f->fmt.pix.bytesperline = 0;
1143 f->fmt.pix.field = V4L2_FIELD_ANY;
1144
1145 kfree(vid_info);
1146 return 0;
1147}
1148
76717b88
JG		 1149static int vidioc_encoder_cmd(struct file *filp, void *priv,
1150 struct v4l2_encoder_cmd *a)
1151{
1152 struct hdpvr_fh *fh = filp->private_data;
1153 struct hdpvr_device *dev = fh->dev;
1154 int res;
1155
1156 mutex_lock(&dev->io_mutex);
1157
1158 memset(&a->raw, 0, sizeof(a->raw));
1159 switch (a->cmd) {
1160 case V4L2_ENC_CMD_START:
1161 a->flags = 0;
1162 res = hdpvr_start_streaming(dev);
1163 break;
1164 case V4L2_ENC_CMD_STOP:
1165 res = hdpvr_stop_streaming(dev);
1166 break;
1167 default:
9ef77adf 1168 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
76717b88 1169 "Unsupported encoder cmd %d\n", a->cmd);
48f98f75 1170 res = -EINVAL;
76717b88
JG		 1171 }
1172 mutex_unlock(&dev->io_mutex);
1173 return res;
1174}
1175
1176static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1177 struct v4l2_encoder_cmd *a)
1178{
1179 switch (a->cmd) {
1180 case V4L2_ENC_CMD_START:
1181 case V4L2_ENC_CMD_STOP:
1182 return 0;
1183 default:
1184 return -EINVAL;
1185 }
1186}
9aba42ef
JG		 1187
1188static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1189 .vidioc_querycap = vidioc_querycap,
1190 .vidioc_s_std = vidioc_s_std,
1191 .vidioc_enum_input = vidioc_enum_input,
1192 .vidioc_g_input = vidioc_g_input,
1193 .vidioc_s_input = vidioc_s_input,
1194 .vidioc_enumaudio = vidioc_enumaudio,
1195 .vidioc_g_audio = vidioc_g_audio,
1196 .vidioc_s_audio = vidioc_s_audio,
1197 .vidioc_queryctrl = vidioc_queryctrl,
1198 .vidioc_g_ctrl = vidioc_g_ctrl,
1199 .vidioc_s_ctrl = vidioc_s_ctrl,
1200 .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls,
1201 .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
1202 .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
1203 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1204 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
76717b88
JG		 1205 .vidioc_encoder_cmd = vidioc_encoder_cmd,
1206 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
9aba42ef
JG		 1207};
1208
1209static void hdpvr_device_release(struct video_device *vdev)
1210{
1211 struct hdpvr_device *dev = video_get_drvdata(vdev);
1212
1213 hdpvr_delete(dev);
f2b305cd
HV		 1214 mutex_lock(&dev->io_mutex);
1215 destroy_workqueue(dev->workqueue);
1216 mutex_unlock(&dev->io_mutex);
1217
1218 v4l2_device_unregister(&dev->v4l2_dev);
1219
1220 /* deregister I2C adapter */
324b04ba 1221#if defined(CONFIG_I2C) || (CONFIG_I2C_MODULE)
f2b305cd 1222 mutex_lock(&dev->i2c_mutex);
324b04ba 1223 i2c_del_adapter(&dev->i2c_adapter);
f2b305cd
HV		 1224 mutex_unlock(&dev->i2c_mutex);
1225#endif /* CONFIG_I2C */
1226
1227 kfree(dev->usbc_buf);
1228 kfree(dev);
9aba42ef
JG		 1229}
1230
1231static const struct video_device hdpvr_video_template = {
1232/* .type = VFL_TYPE_GRABBER, */
1233/* .type2 = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */
1234 .fops = &hdpvr_fops,
1235 .release = hdpvr_device_release,
1236 .ioctl_ops = &hdpvr_ioctl_ops,
1237 .tvnorms =
1238 V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_B |
1239 V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I |
1240 V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N |
1241 V4L2_STD_PAL_60,
99362e1e
HV		 1242 .current_norm = V4L2_STD_NTSC | V4L2_STD_PAL_M |
1243 V4L2_STD_PAL_60,
9aba42ef
JG		 1244};
1245
a50ab291
JG		 1246int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1247 int devnum)
9aba42ef
JG		 1248{
1249 /* setup and register video device */
1250 dev->video_dev = video_device_alloc();
1251 if (!dev->video_dev) {
9ef77adf 1252 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
9aba42ef
JG		 1253 goto error;
1254 }
1255
1256 *(dev->video_dev) = hdpvr_video_template;
1257 strcpy(dev->video_dev->name, "Hauppauge HD PVR");
a50ab291 1258 dev->video_dev->parent = parent;
9aba42ef
JG		 1259 video_set_drvdata(dev->video_dev, dev);
1260
1261 if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) {
9ef77adf 1262 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
9aba42ef
JG		 1263 goto error;
1264 }
1265
1266 return 0;
1267error:
1268 return -ENOMEM;
1269}
Linux kernel - Deliverables
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