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