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/kconfig.h> 14 #include <linux/errno.h> 15 #include <linux/init.h> 16 #include <linux/slab.h> 17 #include <linux/module.h> 18 #include <linux/uaccess.h> 19 #include <linux/usb.h> 20 #include <linux/mutex.h> 21 #include <linux/workqueue.h> 22 23 #include <linux/videodev2.h> 24 #include <linux/v4l2-dv-timings.h> 25 #include <media/v4l2-dev.h> 26 #include <media/v4l2-common.h> 27 #include <media/v4l2-dv-timings.h> 28 #include <media/v4l2-ioctl.h> 29 #include <media/v4l2-event.h> 30 #include "hdpvr.h" 31 32 #define BULK_URB_TIMEOUT 90 /* 0.09 seconds */ 33 34 #define print_buffer_status() { \ 35 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, \ 36 "%s:%d buffer stat: %d free, %d proc\n", \ 37 __func__, __LINE__, \ 38 list_size(&dev->free_buff_list), \ 39 list_size(&dev->rec_buff_list)); } 40 41 static const struct v4l2_dv_timings hdpvr_dv_timings[] = { 42 V4L2_DV_BT_CEA_720X480I59_94, 43 V4L2_DV_BT_CEA_720X576I50, 44 V4L2_DV_BT_CEA_720X480P59_94, 45 V4L2_DV_BT_CEA_720X576P50, 46 V4L2_DV_BT_CEA_1280X720P50, 47 V4L2_DV_BT_CEA_1280X720P60, 48 V4L2_DV_BT_CEA_1920X1080I50, 49 V4L2_DV_BT_CEA_1920X1080I60, 50 }; 51 52 /* Use 480i59 as the default timings */ 53 #define HDPVR_DEF_DV_TIMINGS_IDX (0) 54 55 struct hdpvr_fh { 56 struct v4l2_fh fh; 57 bool legacy_mode; 58 }; 59 60 static uint list_size(struct list_head *list) 61 { 62 struct list_head *tmp; 63 uint count = 0; 64 65 list_for_each(tmp, list) { 66 count++; 67 } 68 69 return count; 70 } 71 72 /*=========================================================================*/ 73 /* urb callback */ 74 static void hdpvr_read_bulk_callback(struct urb *urb) 75 { 76 struct hdpvr_buffer *buf = (struct hdpvr_buffer *)urb->context; 77 struct hdpvr_device *dev = buf->dev; 78 79 /* marking buffer as received and wake waiting */ 80 buf->status = BUFSTAT_READY; 81 wake_up_interruptible(&dev->wait_data); 82 } 83 84 /*=========================================================================*/ 85 /* buffer bits */ 86 87 /* function expects dev->io_mutex to be hold by caller */ 88 int hdpvr_cancel_queue(struct hdpvr_device *dev) 89 { 90 struct hdpvr_buffer *buf; 91 92 list_for_each_entry(buf, &dev->rec_buff_list, buff_list) { 93 usb_kill_urb(buf->urb); 94 buf->status = BUFSTAT_AVAILABLE; 95 } 96 97 list_splice_init(&dev->rec_buff_list, dev->free_buff_list.prev); 98 99 return 0; 100 } 101 102 static int hdpvr_free_queue(struct list_head *q) 103 { 104 struct list_head *tmp; 105 struct list_head *p; 106 struct hdpvr_buffer *buf; 107 struct urb *urb; 108 109 for (p = q->next; p != q;) { 110 buf = list_entry(p, struct hdpvr_buffer, buff_list); 111 112 urb = buf->urb; 113 usb_free_coherent(urb->dev, urb->transfer_buffer_length, 114 urb->transfer_buffer, urb->transfer_dma); 115 usb_free_urb(urb); 116 tmp = p->next; 117 list_del(p); 118 kfree(buf); 119 p = tmp; 120 } 121 122 return 0; 123 } 124 125 /* function expects dev->io_mutex to be hold by caller */ 126 int hdpvr_free_buffers(struct hdpvr_device *dev) 127 { 128 hdpvr_cancel_queue(dev); 129 130 hdpvr_free_queue(&dev->free_buff_list); 131 hdpvr_free_queue(&dev->rec_buff_list); 132 133 return 0; 134 } 135 136 /* function expects dev->io_mutex to be hold by caller */ 137 int hdpvr_alloc_buffers(struct hdpvr_device *dev, uint count) 138 { 139 uint i; 140 int retval = -ENOMEM; 141 u8 *mem; 142 struct hdpvr_buffer *buf; 143 struct urb *urb; 144 145 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 146 "allocating %u buffers\n", count); 147 148 for (i = 0; i < count; i++) { 149 150 buf = kzalloc(sizeof(struct hdpvr_buffer), GFP_KERNEL); 151 if (!buf) { 152 v4l2_err(&dev->v4l2_dev, "cannot allocate buffer\n"); 153 goto exit; 154 } 155 buf->dev = dev; 156 157 urb = usb_alloc_urb(0, GFP_KERNEL); 158 if (!urb) { 159 v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n"); 160 goto exit_urb; 161 } 162 buf->urb = urb; 163 164 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL, 165 &urb->transfer_dma); 166 if (!mem) { 167 v4l2_err(&dev->v4l2_dev, 168 "cannot allocate usb transfer buffer\n"); 169 goto exit_urb_buffer; 170 } 171 172 usb_fill_bulk_urb(buf->urb, dev->udev, 173 usb_rcvbulkpipe(dev->udev, 174 dev->bulk_in_endpointAddr), 175 mem, dev->bulk_in_size, 176 hdpvr_read_bulk_callback, buf); 177 178 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 179 buf->status = BUFSTAT_AVAILABLE; 180 list_add_tail(&buf->buff_list, &dev->free_buff_list); 181 } 182 return 0; 183 exit_urb_buffer: 184 usb_free_urb(urb); 185 exit_urb: 186 kfree(buf); 187 exit: 188 hdpvr_free_buffers(dev); 189 return retval; 190 } 191 192 static int hdpvr_submit_buffers(struct hdpvr_device *dev) 193 { 194 struct hdpvr_buffer *buf; 195 struct urb *urb; 196 int ret = 0, err_count = 0; 197 198 mutex_lock(&dev->io_mutex); 199 200 while (dev->status == STATUS_STREAMING && 201 !list_empty(&dev->free_buff_list)) { 202 203 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer, 204 buff_list); 205 if (buf->status != BUFSTAT_AVAILABLE) { 206 v4l2_err(&dev->v4l2_dev, 207 "buffer not marked as available\n"); 208 ret = -EFAULT; 209 goto err; 210 } 211 212 urb = buf->urb; 213 urb->status = 0; 214 urb->actual_length = 0; 215 ret = usb_submit_urb(urb, GFP_KERNEL); 216 if (ret) { 217 v4l2_err(&dev->v4l2_dev, 218 "usb_submit_urb in %s returned %d\n", 219 __func__, ret); 220 if (++err_count > 2) 221 break; 222 continue; 223 } 224 buf->status = BUFSTAT_INPROGRESS; 225 list_move_tail(&buf->buff_list, &dev->rec_buff_list); 226 } 227 err: 228 print_buffer_status(); 229 mutex_unlock(&dev->io_mutex); 230 return ret; 231 } 232 233 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev) 234 { 235 struct hdpvr_buffer *buf; 236 237 mutex_lock(&dev->io_mutex); 238 239 if (list_empty(&dev->rec_buff_list)) { 240 mutex_unlock(&dev->io_mutex); 241 return NULL; 242 } 243 244 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer, 245 buff_list); 246 mutex_unlock(&dev->io_mutex); 247 248 return buf; 249 } 250 251 static void hdpvr_transmit_buffers(struct work_struct *work) 252 { 253 struct hdpvr_device *dev = container_of(work, struct hdpvr_device, 254 worker); 255 256 while (dev->status == STATUS_STREAMING) { 257 258 if (hdpvr_submit_buffers(dev)) { 259 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n"); 260 goto error; 261 } 262 if (wait_event_interruptible(dev->wait_buffer, 263 !list_empty(&dev->free_buff_list) || 264 dev->status != STATUS_STREAMING)) 265 goto error; 266 } 267 268 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 269 "transmit worker exited\n"); 270 return; 271 error: 272 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 273 "transmit buffers errored\n"); 274 dev->status = STATUS_ERROR; 275 } 276 277 /* function expects dev->io_mutex to be hold by caller */ 278 static int hdpvr_start_streaming(struct hdpvr_device *dev) 279 { 280 int ret; 281 struct hdpvr_video_info vidinf; 282 283 if (dev->status == STATUS_STREAMING) 284 return 0; 285 if (dev->status != STATUS_IDLE) 286 return -EAGAIN; 287 288 ret = get_video_info(dev, &vidinf); 289 if (ret < 0) 290 return ret; 291 292 if (!vidinf.valid) { 293 msleep(250); 294 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 295 "no video signal at input %d\n", dev->options.video_input); 296 return -EAGAIN; 297 } 298 299 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 300 "video signal: %dx%d@%dhz\n", vidinf.width, 301 vidinf.height, vidinf.fps); 302 303 /* start streaming 2 request */ 304 ret = usb_control_msg(dev->udev, 305 usb_sndctrlpipe(dev->udev, 0), 306 0xb8, 0x38, 0x1, 0, NULL, 0, 8000); 307 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 308 "encoder start control request returned %d\n", ret); 309 if (ret < 0) 310 return ret; 311 312 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); 313 if (ret) 314 return ret; 315 316 dev->status = STATUS_STREAMING; 317 318 INIT_WORK(&dev->worker, hdpvr_transmit_buffers); 319 queue_work(dev->workqueue, &dev->worker); 320 321 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 322 "streaming started\n"); 323 324 return 0; 325 } 326 327 328 /* function expects dev->io_mutex to be hold by caller */ 329 static int hdpvr_stop_streaming(struct hdpvr_device *dev) 330 { 331 int actual_length; 332 uint c = 0; 333 u8 *buf; 334 335 if (dev->status == STATUS_IDLE) 336 return 0; 337 else if (dev->status != STATUS_STREAMING) 338 return -EAGAIN; 339 340 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); 341 if (!buf) 342 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer " 343 "for emptying the internal device buffer. " 344 "Next capture start will be slow\n"); 345 346 dev->status = STATUS_SHUTTING_DOWN; 347 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 348 mutex_unlock(&dev->io_mutex); 349 350 wake_up_interruptible(&dev->wait_buffer); 351 msleep(50); 352 353 flush_workqueue(dev->workqueue); 354 355 mutex_lock(&dev->io_mutex); 356 /* kill the still outstanding urbs */ 357 hdpvr_cancel_queue(dev); 358 359 /* emptying the device buffer beforeshutting it down */ 360 while (buf && ++c < 500 && 361 !usb_bulk_msg(dev->udev, 362 usb_rcvbulkpipe(dev->udev, 363 dev->bulk_in_endpointAddr), 364 buf, dev->bulk_in_size, &actual_length, 365 BULK_URB_TIMEOUT)) { 366 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 367 "%2d: got %d bytes\n", c, actual_length); 368 } 369 kfree(buf); 370 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 371 "used %d urbs to empty device buffers\n", c-1); 372 msleep(10); 373 374 dev->status = STATUS_IDLE; 375 376 return 0; 377 } 378 379 380 /*=======================================================================*/ 381 /* 382 * video 4 linux 2 file operations 383 */ 384 385 static int hdpvr_open(struct file *file) 386 { 387 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 388 389 if (fh == NULL) 390 return -ENOMEM; 391 fh->legacy_mode = true; 392 v4l2_fh_init(&fh->fh, video_devdata(file)); 393 v4l2_fh_add(&fh->fh); 394 file->private_data = fh; 395 return 0; 396 } 397 398 static int hdpvr_release(struct file *file) 399 { 400 struct hdpvr_device *dev = video_drvdata(file); 401 402 mutex_lock(&dev->io_mutex); 403 if (file->private_data == dev->owner) { 404 hdpvr_stop_streaming(dev); 405 dev->owner = NULL; 406 } 407 mutex_unlock(&dev->io_mutex); 408 409 return v4l2_fh_release(file); 410 } 411 412 /* 413 * hdpvr_v4l2_read() 414 * will allocate buffers when called for the first time 415 */ 416 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 417 loff_t *pos) 418 { 419 struct hdpvr_device *dev = video_drvdata(file); 420 struct hdpvr_buffer *buf = NULL; 421 struct urb *urb; 422 unsigned int ret = 0; 423 int rem, cnt; 424 425 if (*pos) 426 return -ESPIPE; 427 428 mutex_lock(&dev->io_mutex); 429 if (dev->status == STATUS_IDLE) { 430 if (hdpvr_start_streaming(dev)) { 431 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 432 "start_streaming failed\n"); 433 ret = -EIO; 434 msleep(200); 435 dev->status = STATUS_IDLE; 436 mutex_unlock(&dev->io_mutex); 437 goto err; 438 } 439 dev->owner = file->private_data; 440 print_buffer_status(); 441 } 442 mutex_unlock(&dev->io_mutex); 443 444 /* wait for the first buffer */ 445 if (!(file->f_flags & O_NONBLOCK)) { 446 if (wait_event_interruptible(dev->wait_data, 447 hdpvr_get_next_buffer(dev))) 448 return -ERESTARTSYS; 449 } 450 451 buf = hdpvr_get_next_buffer(dev); 452 453 while (count > 0 && buf) { 454 455 if (buf->status != BUFSTAT_READY && 456 dev->status != STATUS_DISCONNECTED) { 457 /* return nonblocking */ 458 if (file->f_flags & O_NONBLOCK) { 459 if (!ret) 460 ret = -EAGAIN; 461 goto err; 462 } 463 464 if (wait_event_interruptible(dev->wait_data, 465 buf->status == BUFSTAT_READY)) { 466 ret = -ERESTARTSYS; 467 goto err; 468 } 469 } 470 471 if (buf->status != BUFSTAT_READY) 472 break; 473 474 /* set remaining bytes to copy */ 475 urb = buf->urb; 476 rem = urb->actual_length - buf->pos; 477 cnt = rem > count ? count : rem; 478 479 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 480 cnt)) { 481 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 482 if (!ret) 483 ret = -EFAULT; 484 goto err; 485 } 486 487 buf->pos += cnt; 488 count -= cnt; 489 buffer += cnt; 490 ret += cnt; 491 492 /* finished, take next buffer */ 493 if (buf->pos == urb->actual_length) { 494 mutex_lock(&dev->io_mutex); 495 buf->pos = 0; 496 buf->status = BUFSTAT_AVAILABLE; 497 498 list_move_tail(&buf->buff_list, &dev->free_buff_list); 499 500 print_buffer_status(); 501 502 mutex_unlock(&dev->io_mutex); 503 504 wake_up_interruptible(&dev->wait_buffer); 505 506 buf = hdpvr_get_next_buffer(dev); 507 } 508 } 509 err: 510 if (!ret && !buf) 511 ret = -EAGAIN; 512 return ret; 513 } 514 515 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait) 516 { 517 unsigned long req_events = poll_requested_events(wait); 518 struct hdpvr_buffer *buf = NULL; 519 struct hdpvr_device *dev = video_drvdata(filp); 520 unsigned int mask = v4l2_ctrl_poll(filp, wait); 521 522 if (!(req_events & (POLLIN | POLLRDNORM))) 523 return mask; 524 525 mutex_lock(&dev->io_mutex); 526 527 if (dev->status == STATUS_IDLE) { 528 if (hdpvr_start_streaming(dev)) { 529 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 530 "start_streaming failed\n"); 531 dev->status = STATUS_IDLE; 532 } else { 533 dev->owner = filp->private_data; 534 } 535 536 print_buffer_status(); 537 } 538 mutex_unlock(&dev->io_mutex); 539 540 buf = hdpvr_get_next_buffer(dev); 541 /* only wait if no data is available */ 542 if (!buf || buf->status != BUFSTAT_READY) { 543 poll_wait(filp, &dev->wait_data, wait); 544 buf = hdpvr_get_next_buffer(dev); 545 } 546 if (buf && buf->status == BUFSTAT_READY) 547 mask |= POLLIN | POLLRDNORM; 548 549 return mask; 550 } 551 552 553 static const struct v4l2_file_operations hdpvr_fops = { 554 .owner = THIS_MODULE, 555 .open = hdpvr_open, 556 .release = hdpvr_release, 557 .read = hdpvr_read, 558 .poll = hdpvr_poll, 559 .unlocked_ioctl = video_ioctl2, 560 }; 561 562 /*=======================================================================*/ 563 /* 564 * V4L2 ioctl handling 565 */ 566 567 static int vidioc_querycap(struct file *file, void *priv, 568 struct v4l2_capability *cap) 569 { 570 struct hdpvr_device *dev = video_drvdata(file); 571 572 strcpy(cap->driver, "hdpvr"); 573 strcpy(cap->card, "Hauppauge HD PVR"); 574 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 575 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 576 V4L2_CAP_READWRITE; 577 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 578 return 0; 579 } 580 581 static int vidioc_s_std(struct file *file, void *_fh, 582 v4l2_std_id std) 583 { 584 struct hdpvr_device *dev = video_drvdata(file); 585 struct hdpvr_fh *fh = _fh; 586 u8 std_type = 1; 587 588 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 589 return -ENODATA; 590 if (dev->status != STATUS_IDLE) 591 return -EBUSY; 592 if (std & V4L2_STD_525_60) 593 std_type = 0; 594 dev->cur_std = std; 595 dev->width = 720; 596 dev->height = std_type ? 576 : 480; 597 598 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 599 } 600 601 static int vidioc_g_std(struct file *file, void *_fh, 602 v4l2_std_id *std) 603 { 604 struct hdpvr_device *dev = video_drvdata(file); 605 struct hdpvr_fh *fh = _fh; 606 607 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 608 return -ENODATA; 609 *std = dev->cur_std; 610 return 0; 611 } 612 613 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 614 { 615 struct hdpvr_device *dev = video_drvdata(file); 616 struct hdpvr_video_info vid_info; 617 struct hdpvr_fh *fh = _fh; 618 int ret; 619 620 *a = V4L2_STD_UNKNOWN; 621 if (dev->options.video_input == HDPVR_COMPONENT) 622 return fh->legacy_mode ? 0 : -ENODATA; 623 ret = get_video_info(dev, &vid_info); 624 if (vid_info.valid && vid_info.width == 720 && 625 (vid_info.height == 480 || vid_info.height == 576)) { 626 *a = (vid_info.height == 480) ? 627 V4L2_STD_525_60 : V4L2_STD_625_50; 628 } 629 return ret; 630 } 631 632 static int vidioc_s_dv_timings(struct file *file, void *_fh, 633 struct v4l2_dv_timings *timings) 634 { 635 struct hdpvr_device *dev = video_drvdata(file); 636 struct hdpvr_fh *fh = _fh; 637 int i; 638 639 fh->legacy_mode = false; 640 if (dev->options.video_input) 641 return -ENODATA; 642 if (dev->status != STATUS_IDLE) 643 return -EBUSY; 644 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 645 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 646 break; 647 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 648 return -EINVAL; 649 dev->cur_dv_timings = hdpvr_dv_timings[i]; 650 dev->width = hdpvr_dv_timings[i].bt.width; 651 dev->height = hdpvr_dv_timings[i].bt.height; 652 return 0; 653 } 654 655 static int vidioc_g_dv_timings(struct file *file, void *_fh, 656 struct v4l2_dv_timings *timings) 657 { 658 struct hdpvr_device *dev = video_drvdata(file); 659 struct hdpvr_fh *fh = _fh; 660 661 fh->legacy_mode = false; 662 if (dev->options.video_input) 663 return -ENODATA; 664 *timings = dev->cur_dv_timings; 665 return 0; 666 } 667 668 static int vidioc_query_dv_timings(struct file *file, void *_fh, 669 struct v4l2_dv_timings *timings) 670 { 671 struct hdpvr_device *dev = video_drvdata(file); 672 struct hdpvr_fh *fh = _fh; 673 struct hdpvr_video_info vid_info; 674 bool interlaced; 675 int ret = 0; 676 int i; 677 678 fh->legacy_mode = false; 679 if (dev->options.video_input) 680 return -ENODATA; 681 ret = get_video_info(dev, &vid_info); 682 if (ret) 683 return ret; 684 if (!vid_info.valid) 685 return -ENOLCK; 686 interlaced = vid_info.fps <= 30; 687 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 688 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 689 unsigned hsize; 690 unsigned vsize; 691 unsigned fps; 692 693 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 694 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 695 fps = (unsigned)bt->pixelclock / (hsize * vsize); 696 if (bt->width != vid_info.width || 697 bt->height != vid_info.height || 698 bt->interlaced != interlaced || 699 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 700 continue; 701 *timings = hdpvr_dv_timings[i]; 702 break; 703 } 704 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 705 ret = -ERANGE; 706 707 return ret; 708 } 709 710 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 711 struct v4l2_enum_dv_timings *timings) 712 { 713 struct hdpvr_device *dev = video_drvdata(file); 714 struct hdpvr_fh *fh = _fh; 715 716 fh->legacy_mode = false; 717 memset(timings->reserved, 0, sizeof(timings->reserved)); 718 if (dev->options.video_input) 719 return -ENODATA; 720 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 721 return -EINVAL; 722 timings->timings = hdpvr_dv_timings[timings->index]; 723 return 0; 724 } 725 726 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 727 struct v4l2_dv_timings_cap *cap) 728 { 729 struct hdpvr_device *dev = video_drvdata(file); 730 struct hdpvr_fh *fh = _fh; 731 732 fh->legacy_mode = false; 733 if (dev->options.video_input) 734 return -ENODATA; 735 cap->type = V4L2_DV_BT_656_1120; 736 cap->bt.min_width = 720; 737 cap->bt.max_width = 1920; 738 cap->bt.min_height = 480; 739 cap->bt.max_height = 1080; 740 cap->bt.min_pixelclock = 27000000; 741 cap->bt.max_pixelclock = 74250000; 742 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 743 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 744 return 0; 745 } 746 747 static const char *iname[] = { 748 [HDPVR_COMPONENT] = "Component", 749 [HDPVR_SVIDEO] = "S-Video", 750 [HDPVR_COMPOSITE] = "Composite", 751 }; 752 753 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 754 { 755 unsigned int n; 756 757 n = i->index; 758 if (n >= HDPVR_VIDEO_INPUTS) 759 return -EINVAL; 760 761 i->type = V4L2_INPUT_TYPE_CAMERA; 762 763 strncpy(i->name, iname[n], sizeof(i->name) - 1); 764 i->name[sizeof(i->name) - 1] = '\0'; 765 766 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 767 768 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 769 i->std = n ? V4L2_STD_ALL : 0; 770 771 return 0; 772 } 773 774 static int vidioc_s_input(struct file *file, void *_fh, 775 unsigned int index) 776 { 777 struct hdpvr_device *dev = video_drvdata(file); 778 int retval; 779 780 if (index >= HDPVR_VIDEO_INPUTS) 781 return -EINVAL; 782 783 if (dev->status != STATUS_IDLE) 784 return -EBUSY; 785 786 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 787 if (!retval) { 788 dev->options.video_input = index; 789 /* 790 * Unfortunately gstreamer calls ENUMSTD and bails out if it 791 * won't find any formats, even though component input is 792 * selected. This means that we have to leave tvnorms at 793 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 794 * tvnorms is set at the device node level and not at the 795 * filehandle level. 796 * 797 * Comment this out for now, but if the legacy mode can be 798 * removed in the future, then this code should be enabled 799 * again. 800 dev->video_dev.tvnorms = 801 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 802 */ 803 } 804 805 return retval; 806 } 807 808 static int vidioc_g_input(struct file *file, void *private_data, 809 unsigned int *index) 810 { 811 struct hdpvr_device *dev = video_drvdata(file); 812 813 *index = dev->options.video_input; 814 return 0; 815 } 816 817 818 static const char *audio_iname[] = { 819 [HDPVR_RCA_FRONT] = "RCA front", 820 [HDPVR_RCA_BACK] = "RCA back", 821 [HDPVR_SPDIF] = "SPDIF", 822 }; 823 824 static int vidioc_enumaudio(struct file *file, void *priv, 825 struct v4l2_audio *audio) 826 { 827 unsigned int n; 828 829 n = audio->index; 830 if (n >= HDPVR_AUDIO_INPUTS) 831 return -EINVAL; 832 833 audio->capability = V4L2_AUDCAP_STEREO; 834 835 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1); 836 audio->name[sizeof(audio->name) - 1] = '\0'; 837 838 return 0; 839 } 840 841 static int vidioc_s_audio(struct file *file, void *private_data, 842 const struct v4l2_audio *audio) 843 { 844 struct hdpvr_device *dev = video_drvdata(file); 845 int retval; 846 847 if (audio->index >= HDPVR_AUDIO_INPUTS) 848 return -EINVAL; 849 850 if (dev->status != STATUS_IDLE) 851 return -EBUSY; 852 853 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 854 if (!retval) 855 dev->options.audio_input = audio->index; 856 857 return retval; 858 } 859 860 static int vidioc_g_audio(struct file *file, void *private_data, 861 struct v4l2_audio *audio) 862 { 863 struct hdpvr_device *dev = video_drvdata(file); 864 865 audio->index = dev->options.audio_input; 866 audio->capability = V4L2_AUDCAP_STEREO; 867 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 868 audio->name[sizeof(audio->name) - 1] = '\0'; 869 return 0; 870 } 871 872 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 873 { 874 struct hdpvr_device *dev = 875 container_of(ctrl->handler, struct hdpvr_device, hdl); 876 877 switch (ctrl->id) { 878 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 879 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 880 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 881 dev->video_bitrate_peak->val = 882 dev->video_bitrate->val + 100000; 883 break; 884 } 885 return 0; 886 } 887 888 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 889 { 890 struct hdpvr_device *dev = 891 container_of(ctrl->handler, struct hdpvr_device, hdl); 892 struct hdpvr_options *opt = &dev->options; 893 int ret = -EINVAL; 894 895 switch (ctrl->id) { 896 case V4L2_CID_BRIGHTNESS: 897 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 898 if (ret) 899 break; 900 dev->options.brightness = ctrl->val; 901 return 0; 902 case V4L2_CID_CONTRAST: 903 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 904 if (ret) 905 break; 906 dev->options.contrast = ctrl->val; 907 return 0; 908 case V4L2_CID_SATURATION: 909 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 910 if (ret) 911 break; 912 dev->options.saturation = ctrl->val; 913 return 0; 914 case V4L2_CID_HUE: 915 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 916 if (ret) 917 break; 918 dev->options.hue = ctrl->val; 919 return 0; 920 case V4L2_CID_SHARPNESS: 921 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 922 if (ret) 923 break; 924 dev->options.sharpness = ctrl->val; 925 return 0; 926 case V4L2_CID_MPEG_AUDIO_ENCODING: 927 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 928 opt->audio_codec = ctrl->val; 929 return hdpvr_set_audio(dev, opt->audio_input + 1, 930 opt->audio_codec); 931 } 932 return 0; 933 case V4L2_CID_MPEG_VIDEO_ENCODING: 934 return 0; 935 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 936 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 937 /* opt->gop_mode |= 0x2; */ 938 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 939 /* opt->gop_mode); */ 940 /* } */ 941 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 942 /* opt->gop_mode &= ~0x2; */ 943 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 944 /* opt->gop_mode); */ 945 /* } */ 946 /* break; */ 947 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 948 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 949 uint bitrate = dev->video_bitrate->val / 100000; 950 951 if (ctrl->is_new) { 952 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 953 opt->bitrate_mode = HDPVR_CONSTANT; 954 else 955 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 956 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 957 opt->bitrate_mode); 958 v4l2_ctrl_activate(dev->video_bitrate_peak, 959 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 960 } 961 962 if (dev->video_bitrate_peak->is_new || 963 dev->video_bitrate->is_new) { 964 opt->bitrate = bitrate; 965 opt->peak_bitrate = peak_bitrate; 966 hdpvr_set_bitrate(dev); 967 } 968 return 0; 969 } 970 case V4L2_CID_MPEG_STREAM_TYPE: 971 return 0; 972 default: 973 break; 974 } 975 return ret; 976 } 977 978 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 979 struct v4l2_fmtdesc *f) 980 { 981 if (f->index != 0) 982 return -EINVAL; 983 984 f->flags = V4L2_FMT_FLAG_COMPRESSED; 985 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32); 986 f->pixelformat = V4L2_PIX_FMT_MPEG; 987 988 return 0; 989 } 990 991 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 992 struct v4l2_format *f) 993 { 994 struct hdpvr_device *dev = video_drvdata(file); 995 struct hdpvr_fh *fh = _fh; 996 int ret; 997 998 /* 999 * The original driver would always returns the current detected 1000 * resolution as the format (and EFAULT if it couldn't be detected). 1001 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 1002 * better way of doing this, but to stay compatible with existing 1003 * applications we assume legacy mode every time an application opens 1004 * the device. Only if one of the new DV_TIMINGS ioctls is called 1005 * will the filehandle go into 'normal' mode where g_fmt returns the 1006 * last set format. 1007 */ 1008 if (fh->legacy_mode) { 1009 struct hdpvr_video_info vid_info; 1010 1011 ret = get_video_info(dev, &vid_info); 1012 if (ret < 0) 1013 return ret; 1014 if (!vid_info.valid) 1015 return -EFAULT; 1016 f->fmt.pix.width = vid_info.width; 1017 f->fmt.pix.height = vid_info.height; 1018 } else { 1019 f->fmt.pix.width = dev->width; 1020 f->fmt.pix.height = dev->height; 1021 } 1022 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1023 f->fmt.pix.sizeimage = dev->bulk_in_size; 1024 f->fmt.pix.bytesperline = 0; 1025 if (f->fmt.pix.width == 720) { 1026 /* SDTV formats */ 1027 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1028 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1029 } else { 1030 /* HDTV formats */ 1031 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; 1032 f->fmt.pix.field = V4L2_FIELD_NONE; 1033 } 1034 return 0; 1035 } 1036 1037 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1038 struct v4l2_encoder_cmd *a) 1039 { 1040 struct hdpvr_device *dev = video_drvdata(filp); 1041 int res = 0; 1042 1043 mutex_lock(&dev->io_mutex); 1044 a->flags = 0; 1045 1046 switch (a->cmd) { 1047 case V4L2_ENC_CMD_START: 1048 if (dev->owner && filp->private_data != dev->owner) { 1049 res = -EBUSY; 1050 break; 1051 } 1052 if (dev->status == STATUS_STREAMING) 1053 break; 1054 res = hdpvr_start_streaming(dev); 1055 if (!res) 1056 dev->owner = filp->private_data; 1057 else 1058 dev->status = STATUS_IDLE; 1059 break; 1060 case V4L2_ENC_CMD_STOP: 1061 if (dev->owner && filp->private_data != dev->owner) { 1062 res = -EBUSY; 1063 break; 1064 } 1065 if (dev->status == STATUS_IDLE) 1066 break; 1067 res = hdpvr_stop_streaming(dev); 1068 if (!res) 1069 dev->owner = NULL; 1070 break; 1071 default: 1072 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1073 "Unsupported encoder cmd %d\n", a->cmd); 1074 res = -EINVAL; 1075 break; 1076 } 1077 1078 mutex_unlock(&dev->io_mutex); 1079 return res; 1080 } 1081 1082 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1083 struct v4l2_encoder_cmd *a) 1084 { 1085 a->flags = 0; 1086 switch (a->cmd) { 1087 case V4L2_ENC_CMD_START: 1088 case V4L2_ENC_CMD_STOP: 1089 return 0; 1090 default: 1091 return -EINVAL; 1092 } 1093 } 1094 1095 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1096 .vidioc_querycap = vidioc_querycap, 1097 .vidioc_s_std = vidioc_s_std, 1098 .vidioc_g_std = vidioc_g_std, 1099 .vidioc_querystd = vidioc_querystd, 1100 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1101 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1102 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1103 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1104 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1105 .vidioc_enum_input = vidioc_enum_input, 1106 .vidioc_g_input = vidioc_g_input, 1107 .vidioc_s_input = vidioc_s_input, 1108 .vidioc_enumaudio = vidioc_enumaudio, 1109 .vidioc_g_audio = vidioc_g_audio, 1110 .vidioc_s_audio = vidioc_s_audio, 1111 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1112 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1113 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1114 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1115 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1116 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1117 .vidioc_log_status = v4l2_ctrl_log_status, 1118 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1119 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1120 }; 1121 1122 static void hdpvr_device_release(struct video_device *vdev) 1123 { 1124 struct hdpvr_device *dev = video_get_drvdata(vdev); 1125 1126 hdpvr_delete(dev); 1127 mutex_lock(&dev->io_mutex); 1128 destroy_workqueue(dev->workqueue); 1129 mutex_unlock(&dev->io_mutex); 1130 1131 v4l2_device_unregister(&dev->v4l2_dev); 1132 v4l2_ctrl_handler_free(&dev->hdl); 1133 1134 /* deregister I2C adapter */ 1135 #if IS_ENABLED(CONFIG_I2C) 1136 mutex_lock(&dev->i2c_mutex); 1137 i2c_del_adapter(&dev->i2c_adapter); 1138 mutex_unlock(&dev->i2c_mutex); 1139 #endif /* CONFIG_I2C */ 1140 1141 kfree(dev->usbc_buf); 1142 kfree(dev); 1143 } 1144 1145 static const struct video_device hdpvr_video_template = { 1146 .fops = &hdpvr_fops, 1147 .release = hdpvr_device_release, 1148 .ioctl_ops = &hdpvr_ioctl_ops, 1149 .tvnorms = V4L2_STD_ALL, 1150 }; 1151 1152 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1153 .try_ctrl = hdpvr_try_ctrl, 1154 .s_ctrl = hdpvr_s_ctrl, 1155 }; 1156 1157 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1158 int devnum) 1159 { 1160 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1161 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1162 int res; 1163 1164 dev->cur_std = V4L2_STD_525_60; 1165 dev->width = 720; 1166 dev->height = 480; 1167 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1168 v4l2_ctrl_handler_init(hdl, 11); 1169 if (dev->fw_ver > 0x15) { 1170 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1171 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1172 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1173 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1174 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1175 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1179 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1180 } else { 1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1182 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1184 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1186 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1190 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1191 } 1192 1193 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1194 V4L2_CID_MPEG_STREAM_TYPE, 1195 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1196 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1197 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1198 V4L2_CID_MPEG_AUDIO_ENCODING, 1199 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1200 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1201 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1202 V4L2_CID_MPEG_VIDEO_ENCODING, 1203 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1204 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1205 1206 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1207 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1208 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1209 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1210 1211 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1212 V4L2_CID_MPEG_VIDEO_BITRATE, 1213 1000000, 13500000, 100000, 6500000); 1214 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1215 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1216 1100000, 20200000, 100000, 9000000); 1217 dev->v4l2_dev.ctrl_handler = hdl; 1218 if (hdl->error) { 1219 res = hdl->error; 1220 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1221 goto error; 1222 } 1223 v4l2_ctrl_cluster(3, &dev->video_mode); 1224 res = v4l2_ctrl_handler_setup(hdl); 1225 if (res < 0) { 1226 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1227 goto error; 1228 } 1229 1230 /* setup and register video device */ 1231 dev->video_dev = hdpvr_video_template; 1232 strcpy(dev->video_dev.name, "Hauppauge HD PVR"); 1233 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1234 video_set_drvdata(&dev->video_dev, dev); 1235 1236 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum); 1237 if (res < 0) { 1238 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1239 goto error; 1240 } 1241 1242 return 0; 1243 error: 1244 v4l2_ctrl_handler_free(hdl); 1245 return res; 1246 } 1247