[media] hdpvr: use same polling interval as other OS
[linux-2.6.git] / drivers / media / video / 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/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   90 /* 0.09 seconds */
30
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)); }
37
38 struct hdpvr_fh {
39         struct hdpvr_device     *dev;
40 };
41
42 static 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 */
56 static 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 */
70 int 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
84 static 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_free_coherent(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 */
108 int 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 */
119 int 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
127         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
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) {
134                         v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
135                         goto exit;
136                 }
137                 buf->dev = dev;
138
139                 urb = usb_alloc_urb(0, GFP_KERNEL);
140                 if (!urb) {
141                         v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n");
142                         goto exit_urb;
143                 }
144                 buf->urb = urb;
145
146                 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
147                                          &urb->transfer_dma);
148                 if (!mem) {
149                         v4l2_err(&dev->v4l2_dev,
150                                  "cannot allocate usb transfer buffer\n");
151                         goto exit_urb_buffer;
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->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
161                 buf->status = BUFSTAT_AVAILABLE;
162                 list_add_tail(&buf->buff_list, &dev->free_buff_list);
163         }
164         return 0;
165 exit_urb_buffer:
166         usb_free_urb(urb);
167 exit_urb:
168         kfree(buf);
169 exit:
170         hdpvr_free_buffers(dev);
171         return retval;
172 }
173
174 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
175 {
176         struct hdpvr_buffer *buf;
177         struct urb *urb;
178         int ret = 0, err_count = 0;
179
180         mutex_lock(&dev->io_mutex);
181
182         while (dev->status == STATUS_STREAMING &&
183                !list_empty(&dev->free_buff_list)) {
184
185                 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
186                                  buff_list);
187                 if (buf->status != BUFSTAT_AVAILABLE) {
188                         v4l2_err(&dev->v4l2_dev,
189                                  "buffer not marked as available\n");
190                         ret = -EFAULT;
191                         goto err;
192                 }
193
194                 urb = buf->urb;
195                 urb->status = 0;
196                 urb->actual_length = 0;
197                 ret = usb_submit_urb(urb, GFP_KERNEL);
198                 if (ret) {
199                         v4l2_err(&dev->v4l2_dev,
200                                  "usb_submit_urb in %s returned %d\n",
201                                  __func__, ret);
202                         if (++err_count > 2)
203                                 break;
204                         continue;
205                 }
206                 buf->status = BUFSTAT_INPROGRESS;
207                 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
208         }
209 err:
210         print_buffer_status();
211         mutex_unlock(&dev->io_mutex);
212         return ret;
213 }
214
215 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
216 {
217         struct hdpvr_buffer *buf;
218
219         mutex_lock(&dev->io_mutex);
220
221         if (list_empty(&dev->rec_buff_list)) {
222                 mutex_unlock(&dev->io_mutex);
223                 return NULL;
224         }
225
226         buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
227                          buff_list);
228         mutex_unlock(&dev->io_mutex);
229
230         return buf;
231 }
232
233 static void hdpvr_transmit_buffers(struct work_struct *work)
234 {
235         struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
236                                                 worker);
237
238         while (dev->status == STATUS_STREAMING) {
239
240                 if (hdpvr_submit_buffers(dev)) {
241                         v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
242                         goto error;
243                 }
244                 if (wait_event_interruptible(dev->wait_buffer,
245                                 !list_empty(&dev->free_buff_list) ||
246                                              dev->status != STATUS_STREAMING))
247                         goto error;
248         }
249
250         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
251                  "transmit worker exited\n");
252         return;
253 error:
254         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
255                  "transmit buffers errored\n");
256         dev->status = STATUS_ERROR;
257 }
258
259 /* function expects dev->io_mutex to be hold by caller */
260 static int hdpvr_start_streaming(struct hdpvr_device *dev)
261 {
262         int ret;
263         struct hdpvr_video_info *vidinf;
264
265         if (dev->status == STATUS_STREAMING)
266                 return 0;
267         else if (dev->status != STATUS_IDLE)
268                 return -EAGAIN;
269
270         vidinf = get_video_info(dev);
271
272         if (vidinf) {
273                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
274                          "video signal: %dx%d@%dhz\n", vidinf->width,
275                          vidinf->height, vidinf->fps);
276                 kfree(vidinf);
277
278                 /* start streaming 2 request */
279                 ret = usb_control_msg(dev->udev,
280                                       usb_sndctrlpipe(dev->udev, 0),
281                                       0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
282                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
283                          "encoder start control request returned %d\n", ret);
284
285                 hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
286
287                 INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
288                 queue_work(dev->workqueue, &dev->worker);
289
290                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
291                          "streaming started\n");
292                 dev->status = STATUS_STREAMING;
293
294                 return 0;
295         }
296         msleep(250);
297         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
298                  "no video signal at input %d\n", dev->options.video_input);
299         return -EAGAIN;
300 }
301
302
303 /* function expects dev->io_mutex to be hold by caller */
304 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
305 {
306         int actual_length;
307         uint c = 0;
308         u8 *buf;
309
310         if (dev->status == STATUS_IDLE)
311                 return 0;
312         else if (dev->status != STATUS_STREAMING)
313                 return -EAGAIN;
314
315         buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
316         if (!buf)
317                 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer "
318                          "for emptying the internal device buffer. "
319                          "Next capture start will be slow\n");
320
321         dev->status = STATUS_SHUTTING_DOWN;
322         hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
323         mutex_unlock(&dev->io_mutex);
324
325         wake_up_interruptible(&dev->wait_buffer);
326         msleep(50);
327
328         flush_workqueue(dev->workqueue);
329
330         mutex_lock(&dev->io_mutex);
331         /* kill the still outstanding urbs */
332         hdpvr_cancel_queue(dev);
333
334         /* emptying the device buffer beforeshutting it down */
335         while (buf && ++c < 500 &&
336                !usb_bulk_msg(dev->udev,
337                              usb_rcvbulkpipe(dev->udev,
338                                              dev->bulk_in_endpointAddr),
339                              buf, dev->bulk_in_size, &actual_length,
340                              BULK_URB_TIMEOUT)) {
341                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
342                          "%2d: got %d bytes\n", c, actual_length);
343         }
344         kfree(buf);
345         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
346                  "used %d urbs to empty device buffers\n", c-1);
347         msleep(10);
348
349         dev->status = STATUS_IDLE;
350
351         return 0;
352 }
353
354
355 /*=======================================================================*/
356 /*
357  * video 4 linux 2 file operations
358  */
359
360 static int hdpvr_open(struct file *file)
361 {
362         struct hdpvr_device *dev;
363         struct hdpvr_fh *fh;
364         int retval = -ENOMEM;
365
366         dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
367         if (!dev) {
368                 pr_err("open failing with with ENODEV\n");
369                 retval = -ENODEV;
370                 goto err;
371         }
372
373         fh = kzalloc(sizeof(struct hdpvr_fh), GFP_KERNEL);
374         if (!fh) {
375                 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
376                 goto err;
377         }
378         /* lock the device to allow correctly handling errors
379          * in resumption */
380         mutex_lock(&dev->io_mutex);
381         dev->open_count++;
382         mutex_unlock(&dev->io_mutex);
383
384         fh->dev = dev;
385
386         /* save our object in the file's private structure */
387         file->private_data = fh;
388
389         retval = 0;
390 err:
391         return retval;
392 }
393
394 static int hdpvr_release(struct file *file)
395 {
396         struct hdpvr_fh         *fh  = file->private_data;
397         struct hdpvr_device     *dev = fh->dev;
398
399         if (!dev)
400                 return -ENODEV;
401
402         mutex_lock(&dev->io_mutex);
403         if (!(--dev->open_count) && dev->status == STATUS_STREAMING)
404                 hdpvr_stop_streaming(dev);
405
406         mutex_unlock(&dev->io_mutex);
407
408         return 0;
409 }
410
411 /*
412  * hdpvr_v4l2_read()
413  * will allocate buffers when called for the first time
414  */
415 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
416                           loff_t *pos)
417 {
418         struct hdpvr_fh *fh = file->private_data;
419         struct hdpvr_device *dev = fh->dev;
420         struct hdpvr_buffer *buf = NULL;
421         struct urb *urb;
422         unsigned int ret = 0;
423         int rem, cnt;
424
425         if (*pos)
426                 return -ESPIPE;
427
428         if (!dev)
429                 return -ENODEV;
430
431         mutex_lock(&dev->io_mutex);
432         if (dev->status == STATUS_IDLE) {
433                 if (hdpvr_start_streaming(dev)) {
434                         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
435                                  "start_streaming failed\n");
436                         ret = -EIO;
437                         msleep(200);
438                         dev->status = STATUS_IDLE;
439                         mutex_unlock(&dev->io_mutex);
440                         goto err;
441                 }
442                 print_buffer_status();
443         }
444         mutex_unlock(&dev->io_mutex);
445
446         /* wait for the first buffer */
447         if (!(file->f_flags & O_NONBLOCK)) {
448                 if (wait_event_interruptible(dev->wait_data,
449                                              hdpvr_get_next_buffer(dev)))
450                         return -ERESTARTSYS;
451         }
452
453         buf = hdpvr_get_next_buffer(dev);
454
455         while (count > 0 && buf) {
456
457                 if (buf->status != BUFSTAT_READY &&
458                     dev->status != STATUS_DISCONNECTED) {
459                         /* return nonblocking */
460                         if (file->f_flags & O_NONBLOCK) {
461                                 if (!ret)
462                                         ret = -EAGAIN;
463                                 goto err;
464                         }
465
466                         if (wait_event_interruptible(dev->wait_data,
467                                               buf->status == BUFSTAT_READY)) {
468                                 ret = -ERESTARTSYS;
469                                 goto err;
470                         }
471                 }
472
473                 if (buf->status != BUFSTAT_READY)
474                         break;
475
476                 /* set remaining bytes to copy */
477                 urb = buf->urb;
478                 rem = urb->actual_length - buf->pos;
479                 cnt = rem > count ? count : rem;
480
481                 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
482                                  cnt)) {
483                         v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
484                         if (!ret)
485                                 ret = -EFAULT;
486                         goto err;
487                 }
488
489                 buf->pos += cnt;
490                 count -= cnt;
491                 buffer += cnt;
492                 ret += cnt;
493
494                 /* finished, take next buffer */
495                 if (buf->pos == urb->actual_length) {
496                         mutex_lock(&dev->io_mutex);
497                         buf->pos = 0;
498                         buf->status = BUFSTAT_AVAILABLE;
499
500                         list_move_tail(&buf->buff_list, &dev->free_buff_list);
501
502                         print_buffer_status();
503
504                         mutex_unlock(&dev->io_mutex);
505
506                         wake_up_interruptible(&dev->wait_buffer);
507
508                         buf = hdpvr_get_next_buffer(dev);
509                 }
510         }
511 err:
512         if (!ret && !buf)
513                 ret = -EAGAIN;
514         return ret;
515 }
516
517 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait)
518 {
519         struct hdpvr_buffer *buf = NULL;
520         struct hdpvr_fh *fh = filp->private_data;
521         struct hdpvr_device *dev = fh->dev;
522         unsigned int mask = 0;
523
524         mutex_lock(&dev->io_mutex);
525
526         if (!video_is_registered(dev->video_dev)) {
527                 mutex_unlock(&dev->io_mutex);
528                 return -EIO;
529         }
530
531         if (dev->status == STATUS_IDLE) {
532                 if (hdpvr_start_streaming(dev)) {
533                         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
534                                  "start_streaming failed\n");
535                         dev->status = STATUS_IDLE;
536                 }
537
538                 print_buffer_status();
539         }
540         mutex_unlock(&dev->io_mutex);
541
542         buf = hdpvr_get_next_buffer(dev);
543         /* only wait if no data is available */
544         if (!buf || buf->status != BUFSTAT_READY) {
545                 poll_wait(filp, &dev->wait_data, wait);
546                 buf = hdpvr_get_next_buffer(dev);
547         }
548         if (buf && buf->status == BUFSTAT_READY)
549                 mask |= POLLIN | POLLRDNORM;
550
551         return mask;
552 }
553
554
555 static const struct v4l2_file_operations hdpvr_fops = {
556         .owner          = THIS_MODULE,
557         .open           = hdpvr_open,
558         .release        = hdpvr_release,
559         .read           = hdpvr_read,
560         .poll           = hdpvr_poll,
561         .unlocked_ioctl = video_ioctl2,
562 };
563
564 /*=======================================================================*/
565 /*
566  * V4L2 ioctl handling
567  */
568
569 static int vidioc_querycap(struct file *file, void  *priv,
570                            struct v4l2_capability *cap)
571 {
572         struct hdpvr_device *dev = video_drvdata(file);
573
574         strcpy(cap->driver, "hdpvr");
575         strcpy(cap->card, "Hauppauge HD PVR");
576         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
577         cap->version = HDPVR_VERSION;
578         cap->capabilities =     V4L2_CAP_VIDEO_CAPTURE |
579                                 V4L2_CAP_AUDIO         |
580                                 V4L2_CAP_READWRITE;
581         return 0;
582 }
583
584 static int vidioc_s_std(struct file *file, void *private_data,
585                         v4l2_std_id *std)
586 {
587         struct hdpvr_fh *fh = file->private_data;
588         struct hdpvr_device *dev = fh->dev;
589         u8 std_type = 1;
590
591         if (*std & (V4L2_STD_NTSC | V4L2_STD_PAL_60))
592                 std_type = 0;
593
594         return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
595 }
596
597 static const char *iname[] = {
598         [HDPVR_COMPONENT] = "Component",
599         [HDPVR_SVIDEO]    = "S-Video",
600         [HDPVR_COMPOSITE] = "Composite",
601 };
602
603 static int vidioc_enum_input(struct file *file, void *priv,
604                                 struct v4l2_input *i)
605 {
606         struct hdpvr_fh *fh = file->private_data;
607         struct hdpvr_device *dev = fh->dev;
608         unsigned int n;
609
610         n = i->index;
611         if (n >= HDPVR_VIDEO_INPUTS)
612                 return -EINVAL;
613
614         i->type = V4L2_INPUT_TYPE_CAMERA;
615
616         strncpy(i->name, iname[n], sizeof(i->name) - 1);
617         i->name[sizeof(i->name) - 1] = '\0';
618
619         i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
620
621         i->std = dev->video_dev->tvnorms;
622
623         return 0;
624 }
625
626 static int vidioc_s_input(struct file *file, void *private_data,
627                           unsigned int index)
628 {
629         struct hdpvr_fh *fh = file->private_data;
630         struct hdpvr_device *dev = fh->dev;
631         int retval;
632
633         if (index >= HDPVR_VIDEO_INPUTS)
634                 return -EINVAL;
635
636         if (dev->status != STATUS_IDLE)
637                 return -EAGAIN;
638
639         retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
640         if (!retval)
641                 dev->options.video_input = index;
642
643         return retval;
644 }
645
646 static int vidioc_g_input(struct file *file, void *private_data,
647                           unsigned int *index)
648 {
649         struct hdpvr_fh *fh = file->private_data;
650         struct hdpvr_device *dev = fh->dev;
651
652         *index = dev->options.video_input;
653         return 0;
654 }
655
656
657 static const char *audio_iname[] = {
658         [HDPVR_RCA_FRONT] = "RCA front",
659         [HDPVR_RCA_BACK]  = "RCA back",
660         [HDPVR_SPDIF]     = "SPDIF",
661 };
662
663 static int vidioc_enumaudio(struct file *file, void *priv,
664                                 struct v4l2_audio *audio)
665 {
666         unsigned int n;
667
668         n = audio->index;
669         if (n >= HDPVR_AUDIO_INPUTS)
670                 return -EINVAL;
671
672         audio->capability = V4L2_AUDCAP_STEREO;
673
674         strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1);
675         audio->name[sizeof(audio->name) - 1] = '\0';
676
677         return 0;
678 }
679
680 static int vidioc_s_audio(struct file *file, void *private_data,
681                           struct v4l2_audio *audio)
682 {
683         struct hdpvr_fh *fh = file->private_data;
684         struct hdpvr_device *dev = fh->dev;
685         int retval;
686
687         if (audio->index >= HDPVR_AUDIO_INPUTS)
688                 return -EINVAL;
689
690         if (dev->status != STATUS_IDLE)
691                 return -EAGAIN;
692
693         retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
694         if (!retval)
695                 dev->options.audio_input = audio->index;
696
697         return retval;
698 }
699
700 static int vidioc_g_audio(struct file *file, void *private_data,
701                           struct v4l2_audio *audio)
702 {
703         struct hdpvr_fh *fh = file->private_data;
704         struct hdpvr_device *dev = fh->dev;
705
706         audio->index = dev->options.audio_input;
707         audio->capability = V4L2_AUDCAP_STEREO;
708         strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
709         audio->name[sizeof(audio->name) - 1] = '\0';
710         return 0;
711 }
712
713 static const s32 supported_v4l2_ctrls[] = {
714         V4L2_CID_BRIGHTNESS,
715         V4L2_CID_CONTRAST,
716         V4L2_CID_SATURATION,
717         V4L2_CID_HUE,
718         V4L2_CID_SHARPNESS,
719         V4L2_CID_MPEG_AUDIO_ENCODING,
720         V4L2_CID_MPEG_VIDEO_ENCODING,
721         V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
722         V4L2_CID_MPEG_VIDEO_BITRATE,
723         V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
724 };
725
726 static int fill_queryctrl(struct hdpvr_options *opt, struct v4l2_queryctrl *qc,
727                           int ac3)
728 {
729         int err;
730
731         switch (qc->id) {
732         case V4L2_CID_BRIGHTNESS:
733                 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x86);
734         case V4L2_CID_CONTRAST:
735                 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
736         case V4L2_CID_SATURATION:
737                 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
738         case V4L2_CID_HUE:
739                 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
740         case V4L2_CID_SHARPNESS:
741                 return v4l2_ctrl_query_fill(qc, 0x0, 0xff, 1, 0x80);
742         case V4L2_CID_MPEG_AUDIO_ENCODING:
743                 return v4l2_ctrl_query_fill(
744                         qc, V4L2_MPEG_AUDIO_ENCODING_AAC,
745                         ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3
746                         : V4L2_MPEG_AUDIO_ENCODING_AAC,
747                         1, V4L2_MPEG_AUDIO_ENCODING_AAC);
748         case V4L2_CID_MPEG_VIDEO_ENCODING:
749                 return v4l2_ctrl_query_fill(
750                         qc, V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC,
751                         V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 1,
752                         V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
753
754 /*      case V4L2_CID_MPEG_VIDEO_? maybe keyframe interval: */
755 /*              return v4l2_ctrl_query_fill(qc, 0, 128, 128, 0); */
756         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
757                 return v4l2_ctrl_query_fill(
758                         qc, V4L2_MPEG_VIDEO_BITRATE_MODE_VBR,
759                         V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 1,
760                         V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
761
762         case V4L2_CID_MPEG_VIDEO_BITRATE:
763                 return v4l2_ctrl_query_fill(qc, 1000000, 13500000, 100000,
764                                             6500000);
765         case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
766                 err = v4l2_ctrl_query_fill(qc, 1100000, 20200000, 100000,
767                                            9000000);
768                 if (!err && opt->bitrate_mode == HDPVR_CONSTANT)
769                         qc->flags |= V4L2_CTRL_FLAG_INACTIVE;
770                 return err;
771         default:
772                 return -EINVAL;
773         }
774 }
775
776 static int vidioc_queryctrl(struct file *file, void *private_data,
777                             struct v4l2_queryctrl *qc)
778 {
779         struct hdpvr_fh *fh = file->private_data;
780         struct hdpvr_device *dev = fh->dev;
781         int i, next;
782         u32 id = qc->id;
783
784         memset(qc, 0, sizeof(*qc));
785
786         next = !!(id &  V4L2_CTRL_FLAG_NEXT_CTRL);
787         qc->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
788
789         for (i = 0; i < ARRAY_SIZE(supported_v4l2_ctrls); i++) {
790                 if (next) {
791                         if (qc->id < supported_v4l2_ctrls[i])
792                                 qc->id = supported_v4l2_ctrls[i];
793                         else
794                                 continue;
795                 }
796
797                 if (qc->id == supported_v4l2_ctrls[i])
798                         return fill_queryctrl(&dev->options, qc,
799                                               dev->flags & HDPVR_FLAG_AC3_CAP);
800
801                 if (qc->id < supported_v4l2_ctrls[i])
802                         break;
803         }
804
805         return -EINVAL;
806 }
807
808 static int vidioc_g_ctrl(struct file *file, void *private_data,
809                          struct v4l2_control *ctrl)
810 {
811         struct hdpvr_fh *fh = file->private_data;
812         struct hdpvr_device *dev = fh->dev;
813
814         switch (ctrl->id) {
815         case V4L2_CID_BRIGHTNESS:
816                 ctrl->value = dev->options.brightness;
817                 break;
818         case V4L2_CID_CONTRAST:
819                 ctrl->value = dev->options.contrast;
820                 break;
821         case V4L2_CID_SATURATION:
822                 ctrl->value = dev->options.saturation;
823                 break;
824         case V4L2_CID_HUE:
825                 ctrl->value = dev->options.hue;
826                 break;
827         case V4L2_CID_SHARPNESS:
828                 ctrl->value = dev->options.sharpness;
829                 break;
830         default:
831                 return -EINVAL;
832         }
833         return 0;
834 }
835
836 static int vidioc_s_ctrl(struct file *file, void *private_data,
837                          struct v4l2_control *ctrl)
838 {
839         struct hdpvr_fh *fh = file->private_data;
840         struct hdpvr_device *dev = fh->dev;
841         int retval;
842
843         switch (ctrl->id) {
844         case V4L2_CID_BRIGHTNESS:
845                 retval = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->value);
846                 if (!retval)
847                         dev->options.brightness = ctrl->value;
848                 break;
849         case V4L2_CID_CONTRAST:
850                 retval = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->value);
851                 if (!retval)
852                         dev->options.contrast = ctrl->value;
853                 break;
854         case V4L2_CID_SATURATION:
855                 retval = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->value);
856                 if (!retval)
857                         dev->options.saturation = ctrl->value;
858                 break;
859         case V4L2_CID_HUE:
860                 retval = hdpvr_config_call(dev, CTRL_HUE, ctrl->value);
861                 if (!retval)
862                         dev->options.hue = ctrl->value;
863                 break;
864         case V4L2_CID_SHARPNESS:
865                 retval = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->value);
866                 if (!retval)
867                         dev->options.sharpness = ctrl->value;
868                 break;
869         default:
870                 return -EINVAL;
871         }
872
873         return retval;
874 }
875
876
877 static int hdpvr_get_ctrl(struct hdpvr_options *opt,
878                           struct v4l2_ext_control *ctrl)
879 {
880         switch (ctrl->id) {
881         case V4L2_CID_MPEG_AUDIO_ENCODING:
882                 ctrl->value = opt->audio_codec;
883                 break;
884         case V4L2_CID_MPEG_VIDEO_ENCODING:
885                 ctrl->value = V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC;
886                 break;
887 /*      case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
888 /*              ctrl->value = (opt->gop_mode & 0x2) ? 0 : 128; */
889 /*              break; */
890         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
891                 ctrl->value = opt->bitrate_mode == HDPVR_CONSTANT
892                         ? V4L2_MPEG_VIDEO_BITRATE_MODE_CBR
893                         : V4L2_MPEG_VIDEO_BITRATE_MODE_VBR;
894                 break;
895         case V4L2_CID_MPEG_VIDEO_BITRATE:
896                 ctrl->value = opt->bitrate * 100000;
897                 break;
898         case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
899                 ctrl->value = opt->peak_bitrate * 100000;
900                 break;
901         case V4L2_CID_MPEG_STREAM_TYPE:
902                 ctrl->value = V4L2_MPEG_STREAM_TYPE_MPEG2_TS;
903                 break;
904         default:
905                 return -EINVAL;
906         }
907         return 0;
908 }
909
910 static int vidioc_g_ext_ctrls(struct file *file, void *priv,
911                               struct v4l2_ext_controls *ctrls)
912 {
913         struct hdpvr_fh *fh = file->private_data;
914         struct hdpvr_device *dev = fh->dev;
915         int i, err = 0;
916
917         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
918                 for (i = 0; i < ctrls->count; i++) {
919                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
920
921                         err = hdpvr_get_ctrl(&dev->options, ctrl);
922                         if (err) {
923                                 ctrls->error_idx = i;
924                                 break;
925                         }
926                 }
927                 return err;
928
929         }
930
931         return -EINVAL;
932 }
933
934
935 static int hdpvr_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
936 {
937         int ret = -EINVAL;
938
939         switch (ctrl->id) {
940         case V4L2_CID_MPEG_AUDIO_ENCODING:
941                 if (ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AAC ||
942                     (ac3 && ctrl->value == V4L2_MPEG_AUDIO_ENCODING_AC3))
943                         ret = 0;
944                 break;
945         case V4L2_CID_MPEG_VIDEO_ENCODING:
946                 if (ctrl->value == V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC)
947                         ret = 0;
948                 break;
949 /*      case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
950 /*              if (ctrl->value == 0 || ctrl->value == 128) */
951 /*                      ret = 0; */
952 /*              break; */
953         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
954                 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR ||
955                     ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR)
956                         ret = 0;
957                 break;
958         case V4L2_CID_MPEG_VIDEO_BITRATE:
959         {
960                 uint bitrate = ctrl->value / 100000;
961                 if (bitrate >= 10 && bitrate <= 135)
962                         ret = 0;
963                 break;
964         }
965         case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
966         {
967                 uint peak_bitrate = ctrl->value / 100000;
968                 if (peak_bitrate >= 10 && peak_bitrate <= 202)
969                         ret = 0;
970                 break;
971         }
972         case V4L2_CID_MPEG_STREAM_TYPE:
973                 if (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS)
974                         ret = 0;
975                 break;
976         default:
977                 return -EINVAL;
978         }
979         return 0;
980 }
981
982 static int vidioc_try_ext_ctrls(struct file *file, void *priv,
983                                 struct v4l2_ext_controls *ctrls)
984 {
985         struct hdpvr_fh *fh = file->private_data;
986         struct hdpvr_device *dev = fh->dev;
987         int i, err = 0;
988
989         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
990                 for (i = 0; i < ctrls->count; i++) {
991                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
992
993                         err = hdpvr_try_ctrl(ctrl,
994                                              dev->flags & HDPVR_FLAG_AC3_CAP);
995                         if (err) {
996                                 ctrls->error_idx = i;
997                                 break;
998                         }
999                 }
1000                 return err;
1001         }
1002
1003         return -EINVAL;
1004 }
1005
1006
1007 static int hdpvr_set_ctrl(struct hdpvr_device *dev,
1008                           struct v4l2_ext_control *ctrl)
1009 {
1010         struct hdpvr_options *opt = &dev->options;
1011         int ret = 0;
1012
1013         switch (ctrl->id) {
1014         case V4L2_CID_MPEG_AUDIO_ENCODING:
1015                 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
1016                         opt->audio_codec = ctrl->value;
1017                         ret = hdpvr_set_audio(dev, opt->audio_input,
1018                                               opt->audio_codec);
1019                 }
1020                 break;
1021         case V4L2_CID_MPEG_VIDEO_ENCODING:
1022                 break;
1023 /*      case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
1024 /*              if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
1025 /*                      opt->gop_mode |= 0x2; */
1026 /*                      hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1027 /*                                        opt->gop_mode); */
1028 /*              } */
1029 /*              if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
1030 /*                      opt->gop_mode &= ~0x2; */
1031 /*                      hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
1032 /*                                        opt->gop_mode); */
1033 /*              } */
1034 /*              break; */
1035         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
1036                 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR &&
1037                     opt->bitrate_mode != HDPVR_CONSTANT) {
1038                         opt->bitrate_mode = HDPVR_CONSTANT;
1039                         hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1040                                           opt->bitrate_mode);
1041                 }
1042                 if (ctrl->value == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
1043                     opt->bitrate_mode == HDPVR_CONSTANT) {
1044                         opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
1045                         hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
1046                                           opt->bitrate_mode);
1047                 }
1048                 break;
1049         case V4L2_CID_MPEG_VIDEO_BITRATE: {
1050                 uint bitrate = ctrl->value / 100000;
1051
1052                 opt->bitrate = bitrate;
1053                 if (bitrate >= opt->peak_bitrate)
1054                         opt->peak_bitrate = bitrate+1;
1055
1056                 hdpvr_set_bitrate(dev);
1057                 break;
1058         }
1059         case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: {
1060                 uint peak_bitrate = ctrl->value / 100000;
1061
1062                 if (opt->bitrate_mode == HDPVR_CONSTANT)
1063                         break;
1064
1065                 if (opt->bitrate < peak_bitrate) {
1066                         opt->peak_bitrate = peak_bitrate;
1067                         hdpvr_set_bitrate(dev);
1068                 } else
1069                         ret = -EINVAL;
1070                 break;
1071         }
1072         case V4L2_CID_MPEG_STREAM_TYPE:
1073                 break;
1074         default:
1075                 return -EINVAL;
1076         }
1077         return ret;
1078 }
1079
1080 static int vidioc_s_ext_ctrls(struct file *file, void *priv,
1081                               struct v4l2_ext_controls *ctrls)
1082 {
1083         struct hdpvr_fh *fh = file->private_data;
1084         struct hdpvr_device *dev = fh->dev;
1085         int i, err = 0;
1086
1087         if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
1088                 for (i = 0; i < ctrls->count; i++) {
1089                         struct v4l2_ext_control *ctrl = ctrls->controls + i;
1090
1091                         err = hdpvr_try_ctrl(ctrl,
1092                                              dev->flags & HDPVR_FLAG_AC3_CAP);
1093                         if (err) {
1094                                 ctrls->error_idx = i;
1095                                 break;
1096                         }
1097                         err = hdpvr_set_ctrl(dev, ctrl);
1098                         if (err) {
1099                                 ctrls->error_idx = i;
1100                                 break;
1101                         }
1102                 }
1103                 return err;
1104
1105         }
1106
1107         return -EINVAL;
1108 }
1109
1110 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
1111                                     struct v4l2_fmtdesc *f)
1112 {
1113
1114         if (f->index != 0 || f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1115                 return -EINVAL;
1116
1117         f->flags = V4L2_FMT_FLAG_COMPRESSED;
1118         strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32);
1119         f->pixelformat = V4L2_PIX_FMT_MPEG;
1120
1121         return 0;
1122 }
1123
1124 static int vidioc_g_fmt_vid_cap(struct file *file, void *private_data,
1125                                 struct v4l2_format *f)
1126 {
1127         struct hdpvr_fh *fh = file->private_data;
1128         struct hdpvr_device *dev = fh->dev;
1129         struct hdpvr_video_info *vid_info;
1130
1131         if (!dev)
1132                 return -ENODEV;
1133
1134         vid_info = get_video_info(dev);
1135         if (!vid_info)
1136                 return -EFAULT;
1137
1138         f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1139         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
1140         f->fmt.pix.width        = vid_info->width;
1141         f->fmt.pix.height       = vid_info->height;
1142         f->fmt.pix.sizeimage    = dev->bulk_in_size;
1143         f->fmt.pix.colorspace   = 0;
1144         f->fmt.pix.bytesperline = 0;
1145         f->fmt.pix.field        = V4L2_FIELD_ANY;
1146
1147         kfree(vid_info);
1148         return 0;
1149 }
1150
1151 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1152                                struct v4l2_encoder_cmd *a)
1153 {
1154         struct hdpvr_fh *fh = filp->private_data;
1155         struct hdpvr_device *dev = fh->dev;
1156         int res;
1157
1158         mutex_lock(&dev->io_mutex);
1159
1160         memset(&a->raw, 0, sizeof(a->raw));
1161         switch (a->cmd) {
1162         case V4L2_ENC_CMD_START:
1163                 a->flags = 0;
1164                 res = hdpvr_start_streaming(dev);
1165                 break;
1166         case V4L2_ENC_CMD_STOP:
1167                 res = hdpvr_stop_streaming(dev);
1168                 break;
1169         default:
1170                 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1171                          "Unsupported encoder cmd %d\n", a->cmd);
1172                 res = -EINVAL;
1173         }
1174         mutex_unlock(&dev->io_mutex);
1175         return res;
1176 }
1177
1178 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1179                                         struct v4l2_encoder_cmd *a)
1180 {
1181         switch (a->cmd) {
1182         case V4L2_ENC_CMD_START:
1183         case V4L2_ENC_CMD_STOP:
1184                 return 0;
1185         default:
1186                 return -EINVAL;
1187         }
1188 }
1189
1190 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1191         .vidioc_querycap        = vidioc_querycap,
1192         .vidioc_s_std           = vidioc_s_std,
1193         .vidioc_enum_input      = vidioc_enum_input,
1194         .vidioc_g_input         = vidioc_g_input,
1195         .vidioc_s_input         = vidioc_s_input,
1196         .vidioc_enumaudio       = vidioc_enumaudio,
1197         .vidioc_g_audio         = vidioc_g_audio,
1198         .vidioc_s_audio         = vidioc_s_audio,
1199         .vidioc_queryctrl       = vidioc_queryctrl,
1200         .vidioc_g_ctrl          = vidioc_g_ctrl,
1201         .vidioc_s_ctrl          = vidioc_s_ctrl,
1202         .vidioc_g_ext_ctrls     = vidioc_g_ext_ctrls,
1203         .vidioc_s_ext_ctrls     = vidioc_s_ext_ctrls,
1204         .vidioc_try_ext_ctrls   = vidioc_try_ext_ctrls,
1205         .vidioc_enum_fmt_vid_cap        = vidioc_enum_fmt_vid_cap,
1206         .vidioc_g_fmt_vid_cap           = vidioc_g_fmt_vid_cap,
1207         .vidioc_encoder_cmd     = vidioc_encoder_cmd,
1208         .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1209 };
1210
1211 static void hdpvr_device_release(struct video_device *vdev)
1212 {
1213         struct hdpvr_device *dev = video_get_drvdata(vdev);
1214
1215         hdpvr_delete(dev);
1216         mutex_lock(&dev->io_mutex);
1217         destroy_workqueue(dev->workqueue);
1218         mutex_unlock(&dev->io_mutex);
1219
1220         v4l2_device_unregister(&dev->v4l2_dev);
1221
1222         /* deregister I2C adapter */
1223 #if defined(CONFIG_I2C) || (CONFIG_I2C_MODULE)
1224         mutex_lock(&dev->i2c_mutex);
1225         i2c_del_adapter(&dev->i2c_adapter);
1226         mutex_unlock(&dev->i2c_mutex);
1227 #endif /* CONFIG_I2C */
1228
1229         kfree(dev->usbc_buf);
1230         kfree(dev);
1231 }
1232
1233 static const struct video_device hdpvr_video_template = {
1234 /*      .type                   = VFL_TYPE_GRABBER, */
1235 /*      .type2                  = VID_TYPE_CAPTURE | VID_TYPE_MPEG_ENCODER, */
1236         .fops                   = &hdpvr_fops,
1237         .release                = hdpvr_device_release,
1238         .ioctl_ops              = &hdpvr_ioctl_ops,
1239         .tvnorms                =
1240                 V4L2_STD_NTSC  | V4L2_STD_SECAM | V4L2_STD_PAL_B |
1241                 V4L2_STD_PAL_G | V4L2_STD_PAL_H | V4L2_STD_PAL_I |
1242                 V4L2_STD_PAL_D | V4L2_STD_PAL_M | V4L2_STD_PAL_N |
1243                 V4L2_STD_PAL_60,
1244         .current_norm           = V4L2_STD_NTSC | V4L2_STD_PAL_M |
1245                 V4L2_STD_PAL_60,
1246 };
1247
1248 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1249                             int devnum)
1250 {
1251         /* setup and register video device */
1252         dev->video_dev = video_device_alloc();
1253         if (!dev->video_dev) {
1254                 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n");
1255                 goto error;
1256         }
1257
1258         *(dev->video_dev) = hdpvr_video_template;
1259         strcpy(dev->video_dev->name, "Hauppauge HD PVR");
1260         dev->video_dev->parent = parent;
1261         video_set_drvdata(dev->video_dev, dev);
1262
1263         if (video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum)) {
1264                 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1265                 goto error;
1266         }
1267
1268         return 0;
1269 error:
1270         return -ENOMEM;
1271 }