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 INIT_WORK(&dev->worker, hdpvr_transmit_buffers); 312 schedule_work(&dev->worker); 313 314 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 315 "streaming started\n"); 316 317 return 0; 318 } 319 320 321 /* function expects dev->io_mutex to be hold by caller */ 322 static int hdpvr_stop_streaming(struct hdpvr_device *dev) 323 { 324 int actual_length; 325 uint c = 0; 326 u8 *buf; 327 328 if (dev->status == STATUS_IDLE) 329 return 0; 330 else if (dev->status != STATUS_STREAMING) 331 return -EAGAIN; 332 333 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); 334 if (!buf) 335 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer for emptying the internal device buffer. Next capture start will be slow\n"); 336 337 dev->status = STATUS_SHUTTING_DOWN; 338 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 339 mutex_unlock(&dev->io_mutex); 340 341 wake_up_interruptible(&dev->wait_buffer); 342 msleep(50); 343 344 flush_work(&dev->worker); 345 346 mutex_lock(&dev->io_mutex); 347 /* kill the still outstanding urbs */ 348 hdpvr_cancel_queue(dev); 349 350 /* emptying the device buffer beforeshutting it down */ 351 while (buf && ++c < 500 && 352 !usb_bulk_msg(dev->udev, 353 usb_rcvbulkpipe(dev->udev, 354 dev->bulk_in_endpointAddr), 355 buf, dev->bulk_in_size, &actual_length, 356 BULK_URB_TIMEOUT)) { 357 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 358 "%2d: got %d bytes\n", c, actual_length); 359 } 360 kfree(buf); 361 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 362 "used %d urbs to empty device buffers\n", c-1); 363 msleep(10); 364 365 dev->status = STATUS_IDLE; 366 367 return 0; 368 } 369 370 371 /*=======================================================================*/ 372 /* 373 * video 4 linux 2 file operations 374 */ 375 376 static int hdpvr_open(struct file *file) 377 { 378 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 379 380 if (fh == NULL) 381 return -ENOMEM; 382 fh->legacy_mode = true; 383 v4l2_fh_init(&fh->fh, video_devdata(file)); 384 v4l2_fh_add(&fh->fh); 385 file->private_data = fh; 386 return 0; 387 } 388 389 static int hdpvr_release(struct file *file) 390 { 391 struct hdpvr_device *dev = video_drvdata(file); 392 393 mutex_lock(&dev->io_mutex); 394 if (file->private_data == dev->owner) { 395 hdpvr_stop_streaming(dev); 396 dev->owner = NULL; 397 } 398 mutex_unlock(&dev->io_mutex); 399 400 return v4l2_fh_release(file); 401 } 402 403 /* 404 * hdpvr_v4l2_read() 405 * will allocate buffers when called for the first time 406 */ 407 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 408 loff_t *pos) 409 { 410 struct hdpvr_device *dev = video_drvdata(file); 411 struct hdpvr_buffer *buf = NULL; 412 struct urb *urb; 413 unsigned int ret = 0; 414 int rem, cnt; 415 416 if (*pos) 417 return -ESPIPE; 418 419 mutex_lock(&dev->io_mutex); 420 if (dev->status == STATUS_IDLE) { 421 if (hdpvr_start_streaming(dev)) { 422 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 423 "start_streaming failed\n"); 424 ret = -EIO; 425 msleep(200); 426 dev->status = STATUS_IDLE; 427 mutex_unlock(&dev->io_mutex); 428 goto err; 429 } 430 dev->owner = file->private_data; 431 print_buffer_status(); 432 } 433 mutex_unlock(&dev->io_mutex); 434 435 /* wait for the first buffer */ 436 if (!(file->f_flags & O_NONBLOCK)) { 437 if (wait_event_interruptible(dev->wait_data, 438 hdpvr_get_next_buffer(dev))) 439 return -ERESTARTSYS; 440 } 441 442 buf = hdpvr_get_next_buffer(dev); 443 444 while (count > 0 && buf) { 445 446 if (buf->status != BUFSTAT_READY && 447 dev->status != STATUS_DISCONNECTED) { 448 int err; 449 /* return nonblocking */ 450 if (file->f_flags & O_NONBLOCK) { 451 if (!ret) 452 ret = -EAGAIN; 453 goto err; 454 } 455 456 err = wait_event_interruptible_timeout(dev->wait_data, 457 buf->status == BUFSTAT_READY, 458 msecs_to_jiffies(1000)); 459 if (err < 0) { 460 ret = err; 461 goto err; 462 } 463 if (!err) { 464 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 465 "timeout: restart streaming\n"); 466 hdpvr_stop_streaming(dev); 467 msecs_to_jiffies(4000); 468 err = hdpvr_start_streaming(dev); 469 if (err) { 470 ret = err; 471 goto err; 472 } 473 } 474 } 475 476 if (buf->status != BUFSTAT_READY) 477 break; 478 479 /* set remaining bytes to copy */ 480 urb = buf->urb; 481 rem = urb->actual_length - buf->pos; 482 cnt = rem > count ? count : rem; 483 484 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 485 cnt)) { 486 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 487 if (!ret) 488 ret = -EFAULT; 489 goto err; 490 } 491 492 buf->pos += cnt; 493 count -= cnt; 494 buffer += cnt; 495 ret += cnt; 496 497 /* finished, take next buffer */ 498 if (buf->pos == urb->actual_length) { 499 mutex_lock(&dev->io_mutex); 500 buf->pos = 0; 501 buf->status = BUFSTAT_AVAILABLE; 502 503 list_move_tail(&buf->buff_list, &dev->free_buff_list); 504 505 print_buffer_status(); 506 507 mutex_unlock(&dev->io_mutex); 508 509 wake_up_interruptible(&dev->wait_buffer); 510 511 buf = hdpvr_get_next_buffer(dev); 512 } 513 } 514 err: 515 if (!ret && !buf) 516 ret = -EAGAIN; 517 return ret; 518 } 519 520 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait) 521 { 522 __poll_t req_events = poll_requested_events(wait); 523 struct hdpvr_buffer *buf = NULL; 524 struct hdpvr_device *dev = video_drvdata(filp); 525 __poll_t mask = v4l2_ctrl_poll(filp, wait); 526 527 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 528 return mask; 529 530 mutex_lock(&dev->io_mutex); 531 532 if (dev->status == STATUS_IDLE) { 533 if (hdpvr_start_streaming(dev)) { 534 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 535 "start_streaming failed\n"); 536 dev->status = STATUS_IDLE; 537 } else { 538 dev->owner = filp->private_data; 539 } 540 541 print_buffer_status(); 542 } 543 mutex_unlock(&dev->io_mutex); 544 545 buf = hdpvr_get_next_buffer(dev); 546 /* only wait if no data is available */ 547 if (!buf || buf->status != BUFSTAT_READY) { 548 poll_wait(filp, &dev->wait_data, wait); 549 buf = hdpvr_get_next_buffer(dev); 550 } 551 if (buf && buf->status == BUFSTAT_READY) 552 mask |= EPOLLIN | EPOLLRDNORM; 553 554 return mask; 555 } 556 557 558 static const struct v4l2_file_operations hdpvr_fops = { 559 .owner = THIS_MODULE, 560 .open = hdpvr_open, 561 .release = hdpvr_release, 562 .read = hdpvr_read, 563 .poll = hdpvr_poll, 564 .unlocked_ioctl = video_ioctl2, 565 }; 566 567 /*=======================================================================*/ 568 /* 569 * V4L2 ioctl handling 570 */ 571 572 static int vidioc_querycap(struct file *file, void *priv, 573 struct v4l2_capability *cap) 574 { 575 struct hdpvr_device *dev = video_drvdata(file); 576 577 strscpy(cap->driver, "hdpvr", sizeof(cap->driver)); 578 strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card)); 579 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 580 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 581 V4L2_CAP_READWRITE; 582 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 583 return 0; 584 } 585 586 static int vidioc_s_std(struct file *file, void *_fh, 587 v4l2_std_id std) 588 { 589 struct hdpvr_device *dev = video_drvdata(file); 590 struct hdpvr_fh *fh = _fh; 591 u8 std_type = 1; 592 593 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 594 return -ENODATA; 595 if (dev->status != STATUS_IDLE) 596 return -EBUSY; 597 if (std & V4L2_STD_525_60) 598 std_type = 0; 599 dev->cur_std = std; 600 dev->width = 720; 601 dev->height = std_type ? 576 : 480; 602 603 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 604 } 605 606 static int vidioc_g_std(struct file *file, void *_fh, 607 v4l2_std_id *std) 608 { 609 struct hdpvr_device *dev = video_drvdata(file); 610 struct hdpvr_fh *fh = _fh; 611 612 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 613 return -ENODATA; 614 *std = dev->cur_std; 615 return 0; 616 } 617 618 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 619 { 620 struct hdpvr_device *dev = video_drvdata(file); 621 struct hdpvr_video_info vid_info; 622 struct hdpvr_fh *fh = _fh; 623 int ret; 624 625 *a = V4L2_STD_UNKNOWN; 626 if (dev->options.video_input == HDPVR_COMPONENT) 627 return fh->legacy_mode ? 0 : -ENODATA; 628 ret = get_video_info(dev, &vid_info); 629 if (vid_info.valid && vid_info.width == 720 && 630 (vid_info.height == 480 || vid_info.height == 576)) { 631 *a = (vid_info.height == 480) ? 632 V4L2_STD_525_60 : V4L2_STD_625_50; 633 } 634 return ret; 635 } 636 637 static int vidioc_s_dv_timings(struct file *file, void *_fh, 638 struct v4l2_dv_timings *timings) 639 { 640 struct hdpvr_device *dev = video_drvdata(file); 641 struct hdpvr_fh *fh = _fh; 642 int i; 643 644 fh->legacy_mode = false; 645 if (dev->options.video_input) 646 return -ENODATA; 647 if (dev->status != STATUS_IDLE) 648 return -EBUSY; 649 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 650 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 651 break; 652 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 653 return -EINVAL; 654 dev->cur_dv_timings = hdpvr_dv_timings[i]; 655 dev->width = hdpvr_dv_timings[i].bt.width; 656 dev->height = hdpvr_dv_timings[i].bt.height; 657 return 0; 658 } 659 660 static int vidioc_g_dv_timings(struct file *file, void *_fh, 661 struct v4l2_dv_timings *timings) 662 { 663 struct hdpvr_device *dev = video_drvdata(file); 664 struct hdpvr_fh *fh = _fh; 665 666 fh->legacy_mode = false; 667 if (dev->options.video_input) 668 return -ENODATA; 669 *timings = dev->cur_dv_timings; 670 return 0; 671 } 672 673 static int vidioc_query_dv_timings(struct file *file, void *_fh, 674 struct v4l2_dv_timings *timings) 675 { 676 struct hdpvr_device *dev = video_drvdata(file); 677 struct hdpvr_fh *fh = _fh; 678 struct hdpvr_video_info vid_info; 679 bool interlaced; 680 int ret = 0; 681 int i; 682 683 fh->legacy_mode = false; 684 if (dev->options.video_input) 685 return -ENODATA; 686 ret = get_video_info(dev, &vid_info); 687 if (ret) 688 return ret; 689 if (!vid_info.valid) 690 return -ENOLCK; 691 interlaced = vid_info.fps <= 30; 692 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 693 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 694 unsigned hsize; 695 unsigned vsize; 696 unsigned fps; 697 698 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 699 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 700 fps = (unsigned)bt->pixelclock / (hsize * vsize); 701 if (bt->width != vid_info.width || 702 bt->height != vid_info.height || 703 bt->interlaced != interlaced || 704 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 705 continue; 706 *timings = hdpvr_dv_timings[i]; 707 break; 708 } 709 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 710 ret = -ERANGE; 711 712 return ret; 713 } 714 715 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 716 struct v4l2_enum_dv_timings *timings) 717 { 718 struct hdpvr_device *dev = video_drvdata(file); 719 struct hdpvr_fh *fh = _fh; 720 721 fh->legacy_mode = false; 722 memset(timings->reserved, 0, sizeof(timings->reserved)); 723 if (dev->options.video_input) 724 return -ENODATA; 725 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 726 return -EINVAL; 727 timings->timings = hdpvr_dv_timings[timings->index]; 728 return 0; 729 } 730 731 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 732 struct v4l2_dv_timings_cap *cap) 733 { 734 struct hdpvr_device *dev = video_drvdata(file); 735 struct hdpvr_fh *fh = _fh; 736 737 fh->legacy_mode = false; 738 if (dev->options.video_input) 739 return -ENODATA; 740 cap->type = V4L2_DV_BT_656_1120; 741 cap->bt.min_width = 720; 742 cap->bt.max_width = 1920; 743 cap->bt.min_height = 480; 744 cap->bt.max_height = 1080; 745 cap->bt.min_pixelclock = 27000000; 746 cap->bt.max_pixelclock = 74250000; 747 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 748 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 749 return 0; 750 } 751 752 static const char *iname[] = { 753 [HDPVR_COMPONENT] = "Component", 754 [HDPVR_SVIDEO] = "S-Video", 755 [HDPVR_COMPOSITE] = "Composite", 756 }; 757 758 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 759 { 760 unsigned int n; 761 762 n = i->index; 763 if (n >= HDPVR_VIDEO_INPUTS) 764 return -EINVAL; 765 766 i->type = V4L2_INPUT_TYPE_CAMERA; 767 768 strscpy(i->name, iname[n], sizeof(i->name)); 769 770 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 771 772 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 773 i->std = n ? V4L2_STD_ALL : 0; 774 775 return 0; 776 } 777 778 static int vidioc_s_input(struct file *file, void *_fh, 779 unsigned int index) 780 { 781 struct hdpvr_device *dev = video_drvdata(file); 782 int retval; 783 784 if (index >= HDPVR_VIDEO_INPUTS) 785 return -EINVAL; 786 787 if (dev->status != STATUS_IDLE) 788 return -EBUSY; 789 790 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 791 if (!retval) { 792 dev->options.video_input = index; 793 /* 794 * Unfortunately gstreamer calls ENUMSTD and bails out if it 795 * won't find any formats, even though component input is 796 * selected. This means that we have to leave tvnorms at 797 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 798 * tvnorms is set at the device node level and not at the 799 * filehandle level. 800 * 801 * Comment this out for now, but if the legacy mode can be 802 * removed in the future, then this code should be enabled 803 * again. 804 dev->video_dev.tvnorms = 805 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 806 */ 807 } 808 809 return retval; 810 } 811 812 static int vidioc_g_input(struct file *file, void *private_data, 813 unsigned int *index) 814 { 815 struct hdpvr_device *dev = video_drvdata(file); 816 817 *index = dev->options.video_input; 818 return 0; 819 } 820 821 822 static const char *audio_iname[] = { 823 [HDPVR_RCA_FRONT] = "RCA front", 824 [HDPVR_RCA_BACK] = "RCA back", 825 [HDPVR_SPDIF] = "SPDIF", 826 }; 827 828 static int vidioc_enumaudio(struct file *file, void *priv, 829 struct v4l2_audio *audio) 830 { 831 unsigned int n; 832 833 n = audio->index; 834 if (n >= HDPVR_AUDIO_INPUTS) 835 return -EINVAL; 836 837 audio->capability = V4L2_AUDCAP_STEREO; 838 839 strscpy(audio->name, audio_iname[n], sizeof(audio->name)); 840 841 return 0; 842 } 843 844 static int vidioc_s_audio(struct file *file, void *private_data, 845 const struct v4l2_audio *audio) 846 { 847 struct hdpvr_device *dev = video_drvdata(file); 848 int retval; 849 850 if (audio->index >= HDPVR_AUDIO_INPUTS) 851 return -EINVAL; 852 853 if (dev->status != STATUS_IDLE) 854 return -EBUSY; 855 856 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 857 if (!retval) 858 dev->options.audio_input = audio->index; 859 860 return retval; 861 } 862 863 static int vidioc_g_audio(struct file *file, void *private_data, 864 struct v4l2_audio *audio) 865 { 866 struct hdpvr_device *dev = video_drvdata(file); 867 868 audio->index = dev->options.audio_input; 869 audio->capability = V4L2_AUDCAP_STEREO; 870 strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 871 return 0; 872 } 873 874 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 875 { 876 struct hdpvr_device *dev = 877 container_of(ctrl->handler, struct hdpvr_device, hdl); 878 879 switch (ctrl->id) { 880 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 881 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 882 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 883 dev->video_bitrate_peak->val = 884 dev->video_bitrate->val + 100000; 885 break; 886 } 887 return 0; 888 } 889 890 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 891 { 892 struct hdpvr_device *dev = 893 container_of(ctrl->handler, struct hdpvr_device, hdl); 894 struct hdpvr_options *opt = &dev->options; 895 int ret = -EINVAL; 896 897 switch (ctrl->id) { 898 case V4L2_CID_BRIGHTNESS: 899 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 900 if (ret) 901 break; 902 dev->options.brightness = ctrl->val; 903 return 0; 904 case V4L2_CID_CONTRAST: 905 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 906 if (ret) 907 break; 908 dev->options.contrast = ctrl->val; 909 return 0; 910 case V4L2_CID_SATURATION: 911 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 912 if (ret) 913 break; 914 dev->options.saturation = ctrl->val; 915 return 0; 916 case V4L2_CID_HUE: 917 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 918 if (ret) 919 break; 920 dev->options.hue = ctrl->val; 921 return 0; 922 case V4L2_CID_SHARPNESS: 923 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 924 if (ret) 925 break; 926 dev->options.sharpness = ctrl->val; 927 return 0; 928 case V4L2_CID_MPEG_AUDIO_ENCODING: 929 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 930 opt->audio_codec = ctrl->val; 931 return hdpvr_set_audio(dev, opt->audio_input + 1, 932 opt->audio_codec); 933 } 934 return 0; 935 case V4L2_CID_MPEG_VIDEO_ENCODING: 936 return 0; 937 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 938 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 939 /* opt->gop_mode |= 0x2; */ 940 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 941 /* opt->gop_mode); */ 942 /* } */ 943 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 944 /* opt->gop_mode &= ~0x2; */ 945 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 946 /* opt->gop_mode); */ 947 /* } */ 948 /* break; */ 949 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 950 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 951 uint bitrate = dev->video_bitrate->val / 100000; 952 953 if (ctrl->is_new) { 954 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 955 opt->bitrate_mode = HDPVR_CONSTANT; 956 else 957 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 958 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 959 opt->bitrate_mode); 960 v4l2_ctrl_activate(dev->video_bitrate_peak, 961 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 962 } 963 964 if (dev->video_bitrate_peak->is_new || 965 dev->video_bitrate->is_new) { 966 opt->bitrate = bitrate; 967 opt->peak_bitrate = peak_bitrate; 968 hdpvr_set_bitrate(dev); 969 } 970 return 0; 971 } 972 case V4L2_CID_MPEG_STREAM_TYPE: 973 return 0; 974 default: 975 break; 976 } 977 return ret; 978 } 979 980 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 981 struct v4l2_fmtdesc *f) 982 { 983 if (f->index != 0) 984 return -EINVAL; 985 986 f->flags = V4L2_FMT_FLAG_COMPRESSED; 987 strscpy(f->description, "MPEG2-TS with AVC/AAC streams", 988 sizeof(f->description)); 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 mutex_lock(&dev->io_mutex); 1131 flush_work(&dev->worker); 1132 mutex_unlock(&dev->io_mutex); 1133 1134 v4l2_device_unregister(&dev->v4l2_dev); 1135 v4l2_ctrl_handler_free(&dev->hdl); 1136 1137 /* deregister I2C adapter */ 1138 #if IS_ENABLED(CONFIG_I2C) 1139 mutex_lock(&dev->i2c_mutex); 1140 i2c_del_adapter(&dev->i2c_adapter); 1141 mutex_unlock(&dev->i2c_mutex); 1142 #endif /* CONFIG_I2C */ 1143 1144 kfree(dev->usbc_buf); 1145 kfree(dev); 1146 } 1147 1148 static const struct video_device hdpvr_video_template = { 1149 .fops = &hdpvr_fops, 1150 .release = hdpvr_device_release, 1151 .ioctl_ops = &hdpvr_ioctl_ops, 1152 .tvnorms = V4L2_STD_ALL, 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 dev->cur_std = V4L2_STD_525_60; 1168 dev->width = 720; 1169 dev->height = 480; 1170 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1171 v4l2_ctrl_handler_init(hdl, 11); 1172 if (dev->fw_ver > 0x15) { 1173 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1174 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1175 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1176 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1177 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1178 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1179 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1180 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1182 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1183 } else { 1184 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1185 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1186 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1187 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1188 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1189 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1190 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1191 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1192 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1193 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1194 } 1195 1196 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1197 V4L2_CID_MPEG_STREAM_TYPE, 1198 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1199 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1200 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1201 V4L2_CID_MPEG_AUDIO_ENCODING, 1202 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1203 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1204 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1205 V4L2_CID_MPEG_VIDEO_ENCODING, 1206 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1207 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1208 1209 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1210 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1211 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1212 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1213 1214 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1215 V4L2_CID_MPEG_VIDEO_BITRATE, 1216 1000000, 13500000, 100000, 6500000); 1217 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1218 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1219 1100000, 20200000, 100000, 9000000); 1220 dev->v4l2_dev.ctrl_handler = hdl; 1221 if (hdl->error) { 1222 res = hdl->error; 1223 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1224 goto error; 1225 } 1226 v4l2_ctrl_cluster(3, &dev->video_mode); 1227 res = v4l2_ctrl_handler_setup(hdl); 1228 if (res < 0) { 1229 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1230 goto error; 1231 } 1232 1233 /* setup and register video device */ 1234 dev->video_dev = hdpvr_video_template; 1235 strscpy(dev->video_dev.name, "Hauppauge HD PVR", 1236 sizeof(dev->video_dev.name)); 1237 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1238 video_set_drvdata(&dev->video_dev, dev); 1239 1240 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum); 1241 if (res < 0) { 1242 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1243 goto error; 1244 } 1245 1246 return 0; 1247 error: 1248 v4l2_ctrl_handler_free(hdl); 1249 return res; 1250 } 1251