drivers/media/usb/hdpvr/hdpvr-video.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Hauppauge HD PVR USB driver - video 4 linux 2 interface
   4  *
   5  * Copyright (C) 2008      Janne Grunau (j@jannau.net)
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/errno.h>
  10 #include <linux/init.h>
  11 #include <linux/slab.h>
  12 #include <linux/module.h>
  13 #include <linux/uaccess.h>
  14 #include <linux/usb.h>
  15 #include <linux/mutex.h>
  16 #include <linux/workqueue.h>
  17
  18 #include <linux/videodev2.h>
  19 #include <linux/v4l2-dv-timings.h>
  20 #include <media/v4l2-dev.h>
  21 #include <media/v4l2-common.h>
  22 #include <media/v4l2-dv-timings.h>
  23 #include <media/v4l2-ioctl.h>
  24 #include <media/v4l2-event.h>
  25 #include "hdpvr.h"
  26
  27 #define BULK_URB_TIMEOUT   90 /* 0.09 seconds */
  28
  29 #define print_buffer_status() { \
  30                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,       \
  31                          "%s:%d buffer stat: %d free, %d proc\n",       \
  32                          __func__, __LINE__,                            \
  33                          list_size(&dev->free_buff_list),               \
  34                          list_size(&dev->rec_buff_list)); }
  35
  36 static const struct v4l2_dv_timings hdpvr_dv_timings[] = {
  37         V4L2_DV_BT_CEA_720X480I59_94,
  38         V4L2_DV_BT_CEA_720X576I50,
  39         V4L2_DV_BT_CEA_720X480P59_94,
  40         V4L2_DV_BT_CEA_720X576P50,
  41         V4L2_DV_BT_CEA_1280X720P50,
  42         V4L2_DV_BT_CEA_1280X720P60,
  43         V4L2_DV_BT_CEA_1920X1080I50,
  44         V4L2_DV_BT_CEA_1920X1080I60,
  45 };
  46
  47 /* Use 480i59 as the default timings */
  48 #define HDPVR_DEF_DV_TIMINGS_IDX (0)
  49
  50 struct hdpvr_fh {
  51         struct v4l2_fh fh;
  52         bool legacy_mode;
  53 };
  54
  55 static uint list_size(struct list_head *list)
  56 {
  57         struct list_head *tmp;
  58         uint count = 0;
  59
  60         list_for_each(tmp, list) {
  61                 count++;
  62         }
  63
  64         return count;
  65 }
  66
  67 /*=========================================================================*/
  68 /* urb callback */
  69 static void hdpvr_read_bulk_callback(struct urb *urb)
  70 {
  71         struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context;
  72         struct hdpvr_device *dev = buf->dev;
  73
  74         /* marking buffer as received and wake waiting */
  75         buf->status = BUFSTAT_READY;
  76         wake_up_interruptible(&dev->wait_data);
  77 }
  78
  79 /*=========================================================================*/
  80 /* buffer bits */
  81
  82 /* function expects dev->io_mutex to be hold by caller */
  83 int hdpvr_cancel_queue(struct hdpvr_device *dev)
  84 {
  85         struct hdpvr_buffer *buf;
  86
  87         list_for_each_entry(buf, &dev->rec_buff_list, buff_list) {
  88                 usb_kill_urb(buf->urb);
  89                 buf->status = BUFSTAT_AVAILABLE;
  90         }
  91
  92         list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev);
  93
  94         return 0;
  95 }
  96
  97 static int hdpvr_free_queue(struct list_head *q)
  98 {
  99         struct list_head *tmp;
 100         struct list_head *p;
 101         struct hdpvr_buffer *buf;
 102         struct urb *urb;
 103
 104         for (p = q->next; p != q;) {
 105                 buf = list_entry(p, struct hdpvr_buffer, buff_list);
 106
 107                 urb = buf->urb;
 108                 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
 109                                   urb->transfer_buffer, urb->transfer_dma);
 110                 usb_free_urb(urb);
 111                 tmp = p->next;
 112                 list_del(p);
 113                 kfree(buf);
 114                 p = tmp;
 115         }
 116
 117         return 0;
 118 }
 119
 120 /* function expects dev->io_mutex to be hold by caller */
 121 int hdpvr_free_buffers(struct hdpvr_device *dev)
 122 {
 123         hdpvr_cancel_queue(dev);
 124
 125         hdpvr_free_queue(&dev->free_buff_list);
 126         hdpvr_free_queue(&dev->rec_buff_list);
 127
 128         return 0;
 129 }
 130
 131 /* function expects dev->io_mutex to be hold by caller */
 132 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count)
 133 {
 134         uint i;
 135         int retval = -ENOMEM;
 136         u8 *mem;
 137         struct hdpvr_buffer *buf;
 138         struct urb *urb;
 139
 140         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 141                  "allocating %u buffers\n", count);
 142
 143         for (i = 0; i < count; i++) {
 144
 145                 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL);
 146                 if (!buf) {
 147                         v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n");
 148                         goto exit;
 149                 }
 150                 buf->dev = dev;
 151
 152                 urb = usb_alloc_urb(0, GFP_KERNEL);
 153                 if (!urb)
 154                         goto exit_urb;
 155                 buf->urb = urb;
 156
 157                 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL,
 158                                          &urb->transfer_dma);
 159                 if (!mem) {
 160                         v4l2_err(&dev->v4l2_dev,
 161                                  "cannot allocate usb transfer buffer\n");
 162                         goto exit_urb_buffer;
 163                 }
 164
 165                 usb_fill_bulk_urb(buf->urb, dev->udev,
 166                                   usb_rcvbulkpipe(dev->udev,
 167                                                   dev->bulk_in_endpointAddr),
 168                                   mem, dev->bulk_in_size,
 169                                   hdpvr_read_bulk_callback, buf);
 170
 171                 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 172                 buf->status = BUFSTAT_AVAILABLE;
 173                 list_add_tail(&buf->buff_list, &dev->free_buff_list);
 174         }
 175         return 0;
 176 exit_urb_buffer:
 177         usb_free_urb(urb);
 178 exit_urb:
 179         kfree(buf);
 180 exit:
 181         hdpvr_free_buffers(dev);
 182         return retval;
 183 }
 184
 185 static int hdpvr_submit_buffers(struct hdpvr_device *dev)
 186 {
 187         struct hdpvr_buffer *buf;
 188         struct urb *urb;
 189         int ret = 0, err_count = 0;
 190
 191         mutex_lock(&dev->io_mutex);
 192
 193         while (dev->status == STATUS_STREAMING &&
 194                !list_empty(&dev->free_buff_list)) {
 195
 196                 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer,
 197                                  buff_list);
 198                 if (buf->status != BUFSTAT_AVAILABLE) {
 199                         v4l2_err(&dev->v4l2_dev,
 200                                  "buffer not marked as available\n");
 201                         ret = -EFAULT;
 202                         goto err;
 203                 }
 204
 205                 urb = buf->urb;
 206                 urb->status = 0;
 207                 urb->actual_length = 0;
 208                 ret = usb_submit_urb(urb, GFP_KERNEL);
 209                 if (ret) {
 210                         v4l2_err(&dev->v4l2_dev,
 211                                  "usb_submit_urb in %s returned %d\n",
 212                                  __func__, ret);
 213                         if (++err_count > 2)
 214                                 break;
 215                         continue;
 216                 }
 217                 buf->status = BUFSTAT_INPROGRESS;
 218                 list_move_tail(&buf->buff_list, &dev->rec_buff_list);
 219         }
 220 err:
 221         print_buffer_status();
 222         mutex_unlock(&dev->io_mutex);
 223         return ret;
 224 }
 225
 226 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev)
 227 {
 228         struct hdpvr_buffer *buf;
 229
 230         mutex_lock(&dev->io_mutex);
 231
 232         if (list_empty(&dev->rec_buff_list)) {
 233                 mutex_unlock(&dev->io_mutex);
 234                 return NULL;
 235         }
 236
 237         buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer,
 238                          buff_list);
 239         mutex_unlock(&dev->io_mutex);
 240
 241         return buf;
 242 }
 243
 244 static void hdpvr_transmit_buffers(struct work_struct *work)
 245 {
 246         struct hdpvr_device *dev = container_of(work, struct hdpvr_device,
 247                                                 worker);
 248
 249         while (dev->status == STATUS_STREAMING) {
 250
 251                 if (hdpvr_submit_buffers(dev)) {
 252                         v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n");
 253                         goto error;
 254                 }
 255                 if (wait_event_interruptible(dev->wait_buffer,
 256                                 !list_empty(&dev->free_buff_list) ||
 257                                              dev->status != STATUS_STREAMING))
 258                         goto error;
 259         }
 260
 261         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 262                  "transmit worker exited\n");
 263         return;
 264 error:
 265         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 266                  "transmit buffers errored\n");
 267         dev->status = STATUS_ERROR;
 268 }
 269
 270 /* function expects dev->io_mutex to be hold by caller */
 271 static int hdpvr_start_streaming(struct hdpvr_device *dev)
 272 {
 273         int ret;
 274         struct hdpvr_video_info vidinf;
 275
 276         if (dev->status == STATUS_STREAMING)
 277                 return 0;
 278         if (dev->status != STATUS_IDLE)
 279                 return -EAGAIN;
 280
 281         ret = get_video_info(dev, &vidinf);
 282         if (ret < 0)
 283                 return ret;
 284
 285         if (!vidinf.valid) {
 286                 msleep(250);
 287                 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 288                                 "no video signal at input %d\n", dev->options.video_input);
 289                 return -EAGAIN;
 290         }
 291
 292         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 293                         "video signal: %dx%d@%dhz\n", vidinf.width,
 294                         vidinf.height, vidinf.fps);
 295
 296         /* start streaming 2 request */
 297         ret = usb_control_msg(dev->udev,
 298                         usb_sndctrlpipe(dev->udev, 0),
 299                         0xb8, 0x38, 0x1, 0, NULL, 0, 8000);
 300         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 301                         "encoder start control request returned %d\n", ret);
 302         if (ret < 0)
 303                 return ret;
 304
 305         ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00);
 306         if (ret)
 307                 return ret;
 308
 309         dev->status = STATUS_STREAMING;
 310
 311         schedule_work(&dev->worker);
 312
 313         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 314                         "streaming started\n");
 315
 316         return 0;
 317 }
 318
 319
 320 /* function expects dev->io_mutex to be hold by caller */
 321 static int hdpvr_stop_streaming(struct hdpvr_device *dev)
 322 {
 323         int actual_length;
 324         uint c = 0;
 325         u8 *buf;
 326
 327         if (dev->status == STATUS_IDLE)
 328                 return 0;
 329         else if (dev->status != STATUS_STREAMING)
 330                 return -EAGAIN;
 331
 332         buf = kmalloc(dev->bulk_in_size, GFP_KERNEL);
 333         if (!buf)
 334                 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n");
 335
 336         dev->status = STATUS_SHUTTING_DOWN;
 337         hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00);
 338         mutex_unlock(&dev->io_mutex);
 339
 340         wake_up_interruptible(&dev->wait_buffer);
 341         msleep(50);
 342
 343         flush_work(&dev->worker);
 344
 345         mutex_lock(&dev->io_mutex);
 346         /* kill the still outstanding urbs */
 347         hdpvr_cancel_queue(dev);
 348
 349         /* emptying the device buffer beforeshutting it down */
 350         while (buf && ++c < 500 &&
 351                !usb_bulk_msg(dev->udev,
 352                              usb_rcvbulkpipe(dev->udev,
 353                                              dev->bulk_in_endpointAddr),
 354                              buf, dev->bulk_in_size, &actual_length,
 355                              BULK_URB_TIMEOUT)) {
 356                 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 357                          "%2d: got %d bytes\n", c, actual_length);
 358         }
 359         kfree(buf);
 360         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 361                  "used %d urbs to empty device buffers\n", c-1);
 362         msleep(10);
 363
 364         dev->status = STATUS_IDLE;
 365
 366         return 0;
 367 }
 368
 369
 370 /*=======================================================================*/
 371 /*
 372  * video 4 linux 2 file operations
 373  */
 374
 375 static int hdpvr_open(struct file *file)
 376 {
 377         struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
 378
 379         if (fh == NULL)
 380                 return -ENOMEM;
 381         fh->legacy_mode = true;
 382         v4l2_fh_init(&fh->fh, video_devdata(file));
 383         v4l2_fh_add(&fh->fh);
 384         file->private_data = fh;
 385         return 0;
 386 }
 387
 388 static int hdpvr_release(struct file *file)
 389 {
 390         struct hdpvr_device *dev = video_drvdata(file);
 391
 392         mutex_lock(&dev->io_mutex);
 393         if (file->private_data == dev->owner) {
 394                 hdpvr_stop_streaming(dev);
 395                 dev->owner = NULL;
 396         }
 397         mutex_unlock(&dev->io_mutex);
 398
 399         return v4l2_fh_release(file);
 400 }
 401
 402 /*
 403  * hdpvr_v4l2_read()
 404  * will allocate buffers when called for the first time
 405  */
 406 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count,
 407                           loff_t *pos)
 408 {
 409         struct hdpvr_device *dev = video_drvdata(file);
 410         struct hdpvr_buffer *buf = NULL;
 411         struct urb *urb;
 412         unsigned int ret = 0;
 413         int rem, cnt;
 414
 415         if (*pos)
 416                 return -ESPIPE;
 417
 418         mutex_lock(&dev->io_mutex);
 419         if (dev->status == STATUS_IDLE) {
 420                 if (hdpvr_start_streaming(dev)) {
 421                         v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 422                                  "start_streaming failed\n");
 423                         ret = -EIO;
 424                         msleep(200);
 425                         dev->status = STATUS_IDLE;
 426                         mutex_unlock(&dev->io_mutex);
 427                         goto err;
 428                 }
 429                 dev->owner = file->private_data;
 430                 print_buffer_status();
 431         }
 432         mutex_unlock(&dev->io_mutex);
 433
 434         /* wait for the first buffer */
 435         if (!(file->f_flags & O_NONBLOCK)) {
 436                 if (wait_event_interruptible(dev->wait_data,
 437                                              !list_empty_careful(&dev->rec_buff_list)))
 438                         return -ERESTARTSYS;
 439         }
 440
 441         buf = hdpvr_get_next_buffer(dev);
 442
 443         while (count > 0 && buf) {
 444
 445                 if (buf->status != BUFSTAT_READY &&
 446                     dev->status != STATUS_DISCONNECTED) {
 447                         int err;
 448                         /* return nonblocking */
 449                         if (file->f_flags & O_NONBLOCK) {
 450                                 if (!ret)
 451                                         ret = -EAGAIN;
 452                                 goto err;
 453                         }
 454
 455                         err = wait_event_interruptible_timeout(dev->wait_data,
 456                                 buf->status == BUFSTAT_READY,
 457                                 msecs_to_jiffies(1000));
 458                         if (err < 0) {
 459                                 ret = err;
 460                                 goto err;
 461                         }
 462                         if (!err) {
 463                                 v4l2_info(&dev->v4l2_dev,
 464                                           "timeout: restart streaming\n");
 465                                 mutex_lock(&dev->io_mutex);
 466                                 hdpvr_stop_streaming(dev);
 467                                 mutex_unlock(&dev->io_mutex);
 468                                 /*
 469                                  * The FW needs about 4 seconds after streaming
 470                                  * stopped before it is ready to restart
 471                                  * streaming.
 472                                  */
 473                                 msleep(4000);
 474                                 err = hdpvr_start_streaming(dev);
 475                                 if (err) {
 476                                         ret = err;
 477                                         goto err;
 478                                 }
 479                         }
 480                 }
 481
 482                 if (buf->status != BUFSTAT_READY)
 483                         break;
 484
 485                 /* set remaining bytes to copy */
 486                 urb = buf->urb;
 487                 rem = urb->actual_length - buf->pos;
 488                 cnt = rem > count ? count : rem;
 489
 490                 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos,
 491                                  cnt)) {
 492                         v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n");
 493                         if (!ret)
 494                                 ret = -EFAULT;
 495                         goto err;
 496                 }
 497
 498                 buf->pos += cnt;
 499                 count -= cnt;
 500                 buffer += cnt;
 501                 ret += cnt;
 502
 503                 /* finished, take next buffer */
 504                 if (buf->pos == urb->actual_length) {
 505                         mutex_lock(&dev->io_mutex);
 506                         buf->pos = 0;
 507                         buf->status = BUFSTAT_AVAILABLE;
 508
 509                         list_move_tail(&buf->buff_list, &dev->free_buff_list);
 510
 511                         print_buffer_status();
 512
 513                         mutex_unlock(&dev->io_mutex);
 514
 515                         wake_up_interruptible(&dev->wait_buffer);
 516
 517                         buf = hdpvr_get_next_buffer(dev);
 518                 }
 519         }
 520 err:
 521         if (!ret && !buf)
 522                 ret = -EAGAIN;
 523         return ret;
 524 }
 525
 526 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait)
 527 {
 528         __poll_t req_events = poll_requested_events(wait);
 529         struct hdpvr_buffer *buf = NULL;
 530         struct hdpvr_device *dev = video_drvdata(filp);
 531         __poll_t mask = v4l2_ctrl_poll(filp, wait);
 532
 533         if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
 534                 return mask;
 535
 536         mutex_lock(&dev->io_mutex);
 537
 538         if (dev->status == STATUS_IDLE) {
 539                 if (hdpvr_start_streaming(dev)) {
 540                         v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev,
 541                                  "start_streaming failed\n");
 542                         dev->status = STATUS_IDLE;
 543                 } else {
 544                         dev->owner = filp->private_data;
 545                 }
 546
 547                 print_buffer_status();
 548         }
 549         mutex_unlock(&dev->io_mutex);
 550
 551         buf = hdpvr_get_next_buffer(dev);
 552         /* only wait if no data is available */
 553         if (!buf || buf->status != BUFSTAT_READY) {
 554                 poll_wait(filp, &dev->wait_data, wait);
 555                 buf = hdpvr_get_next_buffer(dev);
 556         }
 557         if (buf && buf->status == BUFSTAT_READY)
 558                 mask |= EPOLLIN | EPOLLRDNORM;
 559
 560         return mask;
 561 }
 562
 563
 564 static const struct v4l2_file_operations hdpvr_fops = {
 565         .owner          = THIS_MODULE,
 566         .open           = hdpvr_open,
 567         .release        = hdpvr_release,
 568         .read           = hdpvr_read,
 569         .poll           = hdpvr_poll,
 570         .unlocked_ioctl = video_ioctl2,
 571 };
 572
 573 /*=======================================================================*/
 574 /*
 575  * V4L2 ioctl handling
 576  */
 577
 578 static int vidioc_querycap(struct file *file, void  *priv,
 579                            struct v4l2_capability *cap)
 580 {
 581         struct hdpvr_device *dev = video_drvdata(file);
 582
 583         strscpy(cap->driver, "hdpvr", sizeof(cap->driver));
 584         strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card));
 585         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
 586         return 0;
 587 }
 588
 589 static int vidioc_s_std(struct file *file, void *_fh,
 590                         v4l2_std_id std)
 591 {
 592         struct hdpvr_device *dev = video_drvdata(file);
 593         struct hdpvr_fh *fh = _fh;
 594         u8 std_type = 1;
 595
 596         if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
 597                 return -ENODATA;
 598         if (dev->status != STATUS_IDLE)
 599                 return -EBUSY;
 600         if (std & V4L2_STD_525_60)
 601                 std_type = 0;
 602         dev->cur_std = std;
 603         dev->width = 720;
 604         dev->height = std_type ? 576 : 480;
 605
 606         return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
 607 }
 608
 609 static int vidioc_g_std(struct file *file, void *_fh,
 610                         v4l2_std_id *std)
 611 {
 612         struct hdpvr_device *dev = video_drvdata(file);
 613         struct hdpvr_fh *fh = _fh;
 614
 615         if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
 616                 return -ENODATA;
 617         *std = dev->cur_std;
 618         return 0;
 619 }
 620
 621 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
 622 {
 623         struct hdpvr_device *dev = video_drvdata(file);
 624         struct hdpvr_video_info vid_info;
 625         struct hdpvr_fh *fh = _fh;
 626         int ret;
 627
 628         *a = V4L2_STD_UNKNOWN;
 629         if (dev->options.video_input == HDPVR_COMPONENT)
 630                 return fh->legacy_mode ? 0 : -ENODATA;
 631         ret = get_video_info(dev, &vid_info);
 632         if (vid_info.valid && vid_info.width == 720 &&
 633             (vid_info.height == 480 || vid_info.height == 576)) {
 634                 *a = (vid_info.height == 480) ?
 635                         V4L2_STD_525_60 : V4L2_STD_625_50;
 636         }
 637         return ret;
 638 }
 639
 640 static int vidioc_s_dv_timings(struct file *file, void *_fh,
 641                                     struct v4l2_dv_timings *timings)
 642 {
 643         struct hdpvr_device *dev = video_drvdata(file);
 644         struct hdpvr_fh *fh = _fh;
 645         int i;
 646
 647         fh->legacy_mode = false;
 648         if (dev->options.video_input)
 649                 return -ENODATA;
 650         if (dev->status != STATUS_IDLE)
 651                 return -EBUSY;
 652         for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++)
 653                 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false))
 654                         break;
 655         if (i == ARRAY_SIZE(hdpvr_dv_timings))
 656                 return -EINVAL;
 657         dev->cur_dv_timings = hdpvr_dv_timings[i];
 658         dev->width = hdpvr_dv_timings[i].bt.width;
 659         dev->height = hdpvr_dv_timings[i].bt.height;
 660         return 0;
 661 }
 662
 663 static int vidioc_g_dv_timings(struct file *file, void *_fh,
 664                                     struct v4l2_dv_timings *timings)
 665 {
 666         struct hdpvr_device *dev = video_drvdata(file);
 667         struct hdpvr_fh *fh = _fh;
 668
 669         fh->legacy_mode = false;
 670         if (dev->options.video_input)
 671                 return -ENODATA;
 672         *timings = dev->cur_dv_timings;
 673         return 0;
 674 }
 675
 676 static int vidioc_query_dv_timings(struct file *file, void *_fh,
 677                                     struct v4l2_dv_timings *timings)
 678 {
 679         struct hdpvr_device *dev = video_drvdata(file);
 680         struct hdpvr_fh *fh = _fh;
 681         struct hdpvr_video_info vid_info;
 682         bool interlaced;
 683         int ret = 0;
 684         int i;
 685
 686         fh->legacy_mode = false;
 687         if (dev->options.video_input)
 688                 return -ENODATA;
 689         ret = get_video_info(dev, &vid_info);
 690         if (ret)
 691                 return ret;
 692         if (!vid_info.valid)
 693                 return -ENOLCK;
 694         interlaced = vid_info.fps <= 30;
 695         for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) {
 696                 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt;
 697                 unsigned hsize;
 698                 unsigned vsize;
 699                 unsigned fps;
 700
 701                 hsize = V4L2_DV_BT_FRAME_WIDTH(bt);
 702                 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
 703                 fps = (unsigned)bt->pixelclock / (hsize * vsize);
 704                 if (bt->width != vid_info.width ||
 705                     bt->height != vid_info.height ||
 706                     bt->interlaced != interlaced ||
 707                     (fps != vid_info.fps && fps + 1 != vid_info.fps))
 708                         continue;
 709                 *timings = hdpvr_dv_timings[i];
 710                 break;
 711         }
 712         if (i == ARRAY_SIZE(hdpvr_dv_timings))
 713                 ret = -ERANGE;
 714
 715         return ret;
 716 }
 717
 718 static int vidioc_enum_dv_timings(struct file *file, void *_fh,
 719                                     struct v4l2_enum_dv_timings *timings)
 720 {
 721         struct hdpvr_device *dev = video_drvdata(file);
 722         struct hdpvr_fh *fh = _fh;
 723
 724         fh->legacy_mode = false;
 725         memset(timings->reserved, 0, sizeof(timings->reserved));
 726         if (dev->options.video_input)
 727                 return -ENODATA;
 728         if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings))
 729                 return -EINVAL;
 730         timings->timings = hdpvr_dv_timings[timings->index];
 731         return 0;
 732 }
 733
 734 static int vidioc_dv_timings_cap(struct file *file, void *_fh,
 735                                     struct v4l2_dv_timings_cap *cap)
 736 {
 737         struct hdpvr_device *dev = video_drvdata(file);
 738         struct hdpvr_fh *fh = _fh;
 739
 740         fh->legacy_mode = false;
 741         if (dev->options.video_input)
 742                 return -ENODATA;
 743         cap->type = V4L2_DV_BT_656_1120;
 744         cap->bt.min_width = 720;
 745         cap->bt.max_width = 1920;
 746         cap->bt.min_height = 480;
 747         cap->bt.max_height = 1080;
 748         cap->bt.min_pixelclock = 27000000;
 749         cap->bt.max_pixelclock = 74250000;
 750         cap->bt.standards = V4L2_DV_BT_STD_CEA861;
 751         cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE;
 752         return 0;
 753 }
 754
 755 static const char *iname[] = {
 756         [HDPVR_COMPONENT] = "Component",
 757         [HDPVR_SVIDEO]    = "S-Video",
 758         [HDPVR_COMPOSITE] = "Composite",
 759 };
 760
 761 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
 762 {
 763         unsigned int n;
 764
 765         n = i->index;
 766         if (n >= HDPVR_VIDEO_INPUTS)
 767                 return -EINVAL;
 768
 769         i->type = V4L2_INPUT_TYPE_CAMERA;
 770
 771         strscpy(i->name, iname[n], sizeof(i->name));
 772
 773         i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF;
 774
 775         i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS;
 776         i->std = n ? V4L2_STD_ALL : 0;
 777
 778         return 0;
 779 }
 780
 781 static int vidioc_s_input(struct file *file, void *_fh,
 782                           unsigned int index)
 783 {
 784         struct hdpvr_device *dev = video_drvdata(file);
 785         int retval;
 786
 787         if (index >= HDPVR_VIDEO_INPUTS)
 788                 return -EINVAL;
 789
 790         if (dev->status != STATUS_IDLE)
 791                 return -EBUSY;
 792
 793         retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
 794         if (!retval) {
 795                 dev->options.video_input = index;
 796                 /*
 797                  * Unfortunately gstreamer calls ENUMSTD and bails out if it
 798                  * won't find any formats, even though component input is
 799                  * selected. This means that we have to leave tvnorms at
 800                  * V4L2_STD_ALL. We cannot use the 'legacy' trick since
 801                  * tvnorms is set at the device node level and not at the
 802                  * filehandle level.
 803                  *
 804                  * Comment this out for now, but if the legacy mode can be
 805                  * removed in the future, then this code should be enabled
 806                  * again.
 807                 dev->video_dev.tvnorms =
 808                         (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
 809                  */
 810         }
 811
 812         return retval;
 813 }
 814
 815 static int vidioc_g_input(struct file *file, void *private_data,
 816                           unsigned int *index)
 817 {
 818         struct hdpvr_device *dev = video_drvdata(file);
 819
 820         *index = dev->options.video_input;
 821         return 0;
 822 }
 823
 824
 825 static const char *audio_iname[] = {
 826         [HDPVR_RCA_FRONT] = "RCA front",
 827         [HDPVR_RCA_BACK]  = "RCA back",
 828         [HDPVR_SPDIF]     = "SPDIF",
 829 };
 830
 831 static int vidioc_enumaudio(struct file *file, void *priv,
 832                                 struct v4l2_audio *audio)
 833 {
 834         unsigned int n;
 835
 836         n = audio->index;
 837         if (n >= HDPVR_AUDIO_INPUTS)
 838                 return -EINVAL;
 839
 840         audio->capability = V4L2_AUDCAP_STEREO;
 841
 842         strscpy(audio->name, audio_iname[n], sizeof(audio->name));
 843
 844         return 0;
 845 }
 846
 847 static int vidioc_s_audio(struct file *file, void *private_data,
 848                           const struct v4l2_audio *audio)
 849 {
 850         struct hdpvr_device *dev = video_drvdata(file);
 851         int retval;
 852
 853         if (audio->index >= HDPVR_AUDIO_INPUTS)
 854                 return -EINVAL;
 855
 856         if (dev->status != STATUS_IDLE)
 857                 return -EBUSY;
 858
 859         retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec);
 860         if (!retval)
 861                 dev->options.audio_input = audio->index;
 862
 863         return retval;
 864 }
 865
 866 static int vidioc_g_audio(struct file *file, void *private_data,
 867                           struct v4l2_audio *audio)
 868 {
 869         struct hdpvr_device *dev = video_drvdata(file);
 870
 871         audio->index = dev->options.audio_input;
 872         audio->capability = V4L2_AUDCAP_STEREO;
 873         strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name));
 874         return 0;
 875 }
 876
 877 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl)
 878 {
 879         struct hdpvr_device *dev =
 880                 container_of(ctrl->handler, struct hdpvr_device, hdl);
 881
 882         switch (ctrl->id) {
 883         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
 884                 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
 885                     dev->video_bitrate->val >= dev->video_bitrate_peak->val)
 886                         dev->video_bitrate_peak->val =
 887                                         dev->video_bitrate->val + 100000;
 888                 break;
 889         }
 890         return 0;
 891 }
 892
 893 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl)
 894 {
 895         struct hdpvr_device *dev =
 896                 container_of(ctrl->handler, struct hdpvr_device, hdl);
 897         struct hdpvr_options *opt = &dev->options;
 898         int ret = -EINVAL;
 899
 900         switch (ctrl->id) {
 901         case V4L2_CID_BRIGHTNESS:
 902                 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val);
 903                 if (ret)
 904                         break;
 905                 dev->options.brightness = ctrl->val;
 906                 return 0;
 907         case V4L2_CID_CONTRAST:
 908                 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val);
 909                 if (ret)
 910                         break;
 911                 dev->options.contrast = ctrl->val;
 912                 return 0;
 913         case V4L2_CID_SATURATION:
 914                 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val);
 915                 if (ret)
 916                         break;
 917                 dev->options.saturation = ctrl->val;
 918                 return 0;
 919         case V4L2_CID_HUE:
 920                 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val);
 921                 if (ret)
 922                         break;
 923                 dev->options.hue = ctrl->val;
 924                 return 0;
 925         case V4L2_CID_SHARPNESS:
 926                 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val);
 927                 if (ret)
 928                         break;
 929                 dev->options.sharpness = ctrl->val;
 930                 return 0;
 931         case V4L2_CID_MPEG_AUDIO_ENCODING:
 932                 if (dev->flags & HDPVR_FLAG_AC3_CAP) {
 933                         opt->audio_codec = ctrl->val;
 934                         return hdpvr_set_audio(dev, opt->audio_input + 1,
 935                                               opt->audio_codec);
 936                 }
 937                 return 0;
 938         case V4L2_CID_MPEG_VIDEO_ENCODING:
 939                 return 0;
 940 /*      case V4L2_CID_MPEG_VIDEO_B_FRAMES: */
 941 /*              if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */
 942 /*                      opt->gop_mode |= 0x2; */
 943 /*                      hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
 944 /*                                        opt->gop_mode); */
 945 /*              } */
 946 /*              if (ctrl->value == 128 && opt->gop_mode & 0x2) { */
 947 /*                      opt->gop_mode &= ~0x2; */
 948 /*                      hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */
 949 /*                                        opt->gop_mode); */
 950 /*              } */
 951 /*              break; */
 952         case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: {
 953                 uint peak_bitrate = dev->video_bitrate_peak->val / 100000;
 954                 uint bitrate = dev->video_bitrate->val / 100000;
 955
 956                 if (ctrl->is_new) {
 957                         if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR)
 958                                 opt->bitrate_mode = HDPVR_CONSTANT;
 959                         else
 960                                 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE;
 961                         hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
 962                                           opt->bitrate_mode);
 963                         v4l2_ctrl_activate(dev->video_bitrate_peak,
 964                                 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
 965                 }
 966
 967                 if (dev->video_bitrate_peak->is_new ||
 968                     dev->video_bitrate->is_new) {
 969                         opt->bitrate = bitrate;
 970                         opt->peak_bitrate = peak_bitrate;
 971                         hdpvr_set_bitrate(dev);
 972                 }
 973                 return 0;
 974         }
 975         case V4L2_CID_MPEG_STREAM_TYPE:
 976                 return 0;
 977         default:
 978                 break;
 979         }
 980         return ret;
 981 }
 982
 983 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data,
 984                                     struct v4l2_fmtdesc *f)
 985 {
 986         if (f->index != 0)
 987                 return -EINVAL;
 988
 989         f->pixelformat = V4L2_PIX_FMT_MPEG;
 990
 991         return 0;
 992 }
 993
 994 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh,
 995                                 struct v4l2_format *f)
 996 {
 997         struct hdpvr_device *dev = video_drvdata(file);
 998         struct hdpvr_fh *fh = _fh;
 999         int ret;
1000
1001         /*
1002          * The original driver would always returns the current detected
1003          * resolution as the format (and EFAULT if it couldn't be detected).
1004          * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a
1005          * better way of doing this, but to stay compatible with existing
1006          * applications we assume legacy mode every time an application opens
1007          * the device. Only if one of the new DV_TIMINGS ioctls is called
1008          * will the filehandle go into 'normal' mode where g_fmt returns the
1009          * last set format.
1010          */
1011         if (fh->legacy_mode) {
1012                 struct hdpvr_video_info vid_info;
1013
1014                 ret = get_video_info(dev, &vid_info);
1015                 if (ret < 0)
1016                         return ret;
1017                 if (!vid_info.valid)
1018                         return -EFAULT;
1019                 f->fmt.pix.width = vid_info.width;
1020                 f->fmt.pix.height = vid_info.height;
1021         } else {
1022                 f->fmt.pix.width = dev->width;
1023                 f->fmt.pix.height = dev->height;
1024         }
1025         f->fmt.pix.pixelformat  = V4L2_PIX_FMT_MPEG;
1026         f->fmt.pix.sizeimage    = dev->bulk_in_size;
1027         f->fmt.pix.bytesperline = 0;
1028         if (f->fmt.pix.width == 720) {
1029                 /* SDTV formats */
1030                 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1031                 f->fmt.pix.field = V4L2_FIELD_INTERLACED;
1032         } else {
1033                 /* HDTV formats */
1034                 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
1035                 f->fmt.pix.field = V4L2_FIELD_NONE;
1036         }
1037         return 0;
1038 }
1039
1040 static int vidioc_encoder_cmd(struct file *filp, void *priv,
1041                                struct v4l2_encoder_cmd *a)
1042 {
1043         struct hdpvr_device *dev = video_drvdata(filp);
1044         int res = 0;
1045
1046         mutex_lock(&dev->io_mutex);
1047         a->flags = 0;
1048
1049         switch (a->cmd) {
1050         case V4L2_ENC_CMD_START:
1051                 if (dev->owner && filp->private_data != dev->owner) {
1052                         res = -EBUSY;
1053                         break;
1054                 }
1055                 if (dev->status == STATUS_STREAMING)
1056                         break;
1057                 res = hdpvr_start_streaming(dev);
1058                 if (!res)
1059                         dev->owner = filp->private_data;
1060                 else
1061                         dev->status = STATUS_IDLE;
1062                 break;
1063         case V4L2_ENC_CMD_STOP:
1064                 if (dev->owner && filp->private_data != dev->owner) {
1065                         res = -EBUSY;
1066                         break;
1067                 }
1068                 if (dev->status == STATUS_IDLE)
1069                         break;
1070                 res = hdpvr_stop_streaming(dev);
1071                 if (!res)
1072                         dev->owner = NULL;
1073                 break;
1074         default:
1075                 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
1076                          "Unsupported encoder cmd %d\n", a->cmd);
1077                 res = -EINVAL;
1078                 break;
1079         }
1080
1081         mutex_unlock(&dev->io_mutex);
1082         return res;
1083 }
1084
1085 static int vidioc_try_encoder_cmd(struct file *filp, void *priv,
1086                                         struct v4l2_encoder_cmd *a)
1087 {
1088         a->flags = 0;
1089         switch (a->cmd) {
1090         case V4L2_ENC_CMD_START:
1091         case V4L2_ENC_CMD_STOP:
1092                 return 0;
1093         default:
1094                 return -EINVAL;
1095         }
1096 }
1097
1098 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = {
1099         .vidioc_querycap        = vidioc_querycap,
1100         .vidioc_s_std           = vidioc_s_std,
1101         .vidioc_g_std           = vidioc_g_std,
1102         .vidioc_querystd        = vidioc_querystd,
1103         .vidioc_s_dv_timings    = vidioc_s_dv_timings,
1104         .vidioc_g_dv_timings    = vidioc_g_dv_timings,
1105         .vidioc_query_dv_timings= vidioc_query_dv_timings,
1106         .vidioc_enum_dv_timings = vidioc_enum_dv_timings,
1107         .vidioc_dv_timings_cap  = vidioc_dv_timings_cap,
1108         .vidioc_enum_input      = vidioc_enum_input,
1109         .vidioc_g_input         = vidioc_g_input,
1110         .vidioc_s_input         = vidioc_s_input,
1111         .vidioc_enumaudio       = vidioc_enumaudio,
1112         .vidioc_g_audio         = vidioc_g_audio,
1113         .vidioc_s_audio         = vidioc_s_audio,
1114         .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap,
1115         .vidioc_g_fmt_vid_cap   = vidioc_g_fmt_vid_cap,
1116         .vidioc_s_fmt_vid_cap   = vidioc_g_fmt_vid_cap,
1117         .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1118         .vidioc_encoder_cmd     = vidioc_encoder_cmd,
1119         .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd,
1120         .vidioc_log_status      = v4l2_ctrl_log_status,
1121         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1122         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1123 };
1124
1125 static void hdpvr_device_release(struct video_device *vdev)
1126 {
1127         struct hdpvr_device *dev = video_get_drvdata(vdev);
1128
1129         hdpvr_delete(dev);
1130         flush_work(&dev->worker);
1131
1132         v4l2_device_unregister(&dev->v4l2_dev);
1133         v4l2_ctrl_handler_free(&dev->hdl);
1134
1135         /* deregister I2C adapter */
1136 #if IS_ENABLED(CONFIG_I2C)
1137         mutex_lock(&dev->i2c_mutex);
1138         i2c_del_adapter(&dev->i2c_adapter);
1139         mutex_unlock(&dev->i2c_mutex);
1140 #endif /* CONFIG_I2C */
1141
1142         kfree(dev->usbc_buf);
1143         kfree(dev);
1144 }
1145
1146 static const struct video_device hdpvr_video_template = {
1147         .fops                   = &hdpvr_fops,
1148         .release                = hdpvr_device_release,
1149         .ioctl_ops              = &hdpvr_ioctl_ops,
1150         .tvnorms                = V4L2_STD_ALL,
1151         .device_caps            = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO |
1152                                   V4L2_CAP_READWRITE,
1153 };
1154
1155 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {
1156         .try_ctrl = hdpvr_try_ctrl,
1157         .s_ctrl = hdpvr_s_ctrl,
1158 };
1159
1160 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent,
1161                             int devnum)
1162 {
1163         struct v4l2_ctrl_handler *hdl = &dev->hdl;
1164         bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP;
1165         int res;
1166
1167         // initialize dev->worker
1168         INIT_WORK(&dev->worker, hdpvr_transmit_buffers);
1169
1170         dev->cur_std = V4L2_STD_525_60;
1171         dev->width = 720;
1172         dev->height = 480;
1173         dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX];
1174         v4l2_ctrl_handler_init(hdl, 11);
1175         if (dev->fw_ver > 0x15) {
1176                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1177                         V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80);
1178                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1179                         V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40);
1180                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1181                         V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40);
1182                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1183                         V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf);
1184                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1185                         V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1186         } else {
1187                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1188                         V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86);
1189                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1190                         V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80);
1191                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1192                         V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80);
1193                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1194                         V4L2_CID_HUE, 0x0, 0xff, 1, 0x80);
1195                 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1196                         V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80);
1197         }
1198
1199         v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1200                 V4L2_CID_MPEG_STREAM_TYPE,
1201                 V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
1202                 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS);
1203         v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1204                 V4L2_CID_MPEG_AUDIO_ENCODING,
1205                 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC,
1206                 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC);
1207         v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1208                 V4L2_CID_MPEG_VIDEO_ENCODING,
1209                 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3,
1210                 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC);
1211
1212         dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops,
1213                 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
1214                 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
1215                 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
1216
1217         dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1218                 V4L2_CID_MPEG_VIDEO_BITRATE,
1219                 1000000, 13500000, 100000, 6500000);
1220         dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops,
1221                 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
1222                 1100000, 20200000, 100000, 9000000);
1223         dev->v4l2_dev.ctrl_handler = hdl;
1224         if (hdl->error) {
1225                 res = hdl->error;
1226                 v4l2_err(&dev->v4l2_dev, "Could not register controls\n");
1227                 goto error;
1228         }
1229         v4l2_ctrl_cluster(3, &dev->video_mode);
1230         res = v4l2_ctrl_handler_setup(hdl);
1231         if (res < 0) {
1232                 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n");
1233                 goto error;
1234         }
1235
1236         /* setup and register video device */
1237         dev->video_dev = hdpvr_video_template;
1238         strscpy(dev->video_dev.name, "Hauppauge HD PVR",
1239                 sizeof(dev->video_dev.name));
1240         dev->video_dev.v4l2_dev = &dev->v4l2_dev;
1241         video_set_drvdata(&dev->video_dev, dev);
1242
1243         res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, devnum);
1244         if (res < 0) {
1245                 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n");
1246                 goto error;
1247         }
1248
1249         return 0;
1250 error:
1251         v4l2_ctrl_handler_free(hdl);
1252         return res;
1253 }