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 !list_empty_careful(&dev->rec_buff_list))) 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_info(&dev->v4l2_dev, 465 "timeout: restart streaming\n"); 466 mutex_lock(&dev->io_mutex); 467 hdpvr_stop_streaming(dev); 468 mutex_unlock(&dev->io_mutex); 469 /* 470 * The FW needs about 4 seconds after streaming 471 * stopped before it is ready to restart 472 * streaming. 473 */ 474 msleep(4000); 475 err = hdpvr_start_streaming(dev); 476 if (err) { 477 ret = err; 478 goto err; 479 } 480 } 481 } 482 483 if (buf->status != BUFSTAT_READY) 484 break; 485 486 /* set remaining bytes to copy */ 487 urb = buf->urb; 488 rem = urb->actual_length - buf->pos; 489 cnt = rem > count ? count : rem; 490 491 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 492 cnt)) { 493 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 494 if (!ret) 495 ret = -EFAULT; 496 goto err; 497 } 498 499 buf->pos += cnt; 500 count -= cnt; 501 buffer += cnt; 502 ret += cnt; 503 504 /* finished, take next buffer */ 505 if (buf->pos == urb->actual_length) { 506 mutex_lock(&dev->io_mutex); 507 buf->pos = 0; 508 buf->status = BUFSTAT_AVAILABLE; 509 510 list_move_tail(&buf->buff_list, &dev->free_buff_list); 511 512 print_buffer_status(); 513 514 mutex_unlock(&dev->io_mutex); 515 516 wake_up_interruptible(&dev->wait_buffer); 517 518 buf = hdpvr_get_next_buffer(dev); 519 } 520 } 521 err: 522 if (!ret && !buf) 523 ret = -EAGAIN; 524 return ret; 525 } 526 527 static __poll_t hdpvr_poll(struct file *filp, poll_table *wait) 528 { 529 __poll_t req_events = poll_requested_events(wait); 530 struct hdpvr_buffer *buf = NULL; 531 struct hdpvr_device *dev = video_drvdata(filp); 532 __poll_t mask = v4l2_ctrl_poll(filp, wait); 533 534 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 535 return mask; 536 537 mutex_lock(&dev->io_mutex); 538 539 if (dev->status == STATUS_IDLE) { 540 if (hdpvr_start_streaming(dev)) { 541 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 542 "start_streaming failed\n"); 543 dev->status = STATUS_IDLE; 544 } else { 545 dev->owner = filp->private_data; 546 } 547 548 print_buffer_status(); 549 } 550 mutex_unlock(&dev->io_mutex); 551 552 buf = hdpvr_get_next_buffer(dev); 553 /* only wait if no data is available */ 554 if (!buf || buf->status != BUFSTAT_READY) { 555 poll_wait(filp, &dev->wait_data, wait); 556 buf = hdpvr_get_next_buffer(dev); 557 } 558 if (buf && buf->status == BUFSTAT_READY) 559 mask |= EPOLLIN | EPOLLRDNORM; 560 561 return mask; 562 } 563 564 565 static const struct v4l2_file_operations hdpvr_fops = { 566 .owner = THIS_MODULE, 567 .open = hdpvr_open, 568 .release = hdpvr_release, 569 .read = hdpvr_read, 570 .poll = hdpvr_poll, 571 .unlocked_ioctl = video_ioctl2, 572 }; 573 574 /*=======================================================================*/ 575 /* 576 * V4L2 ioctl handling 577 */ 578 579 static int vidioc_querycap(struct file *file, void *priv, 580 struct v4l2_capability *cap) 581 { 582 struct hdpvr_device *dev = video_drvdata(file); 583 584 strscpy(cap->driver, "hdpvr", sizeof(cap->driver)); 585 strscpy(cap->card, "Hauppauge HD PVR", sizeof(cap->card)); 586 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 587 return 0; 588 } 589 590 static int vidioc_s_std(struct file *file, void *_fh, 591 v4l2_std_id std) 592 { 593 struct hdpvr_device *dev = video_drvdata(file); 594 struct hdpvr_fh *fh = _fh; 595 u8 std_type = 1; 596 597 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 598 return -ENODATA; 599 if (dev->status != STATUS_IDLE) 600 return -EBUSY; 601 if (std & V4L2_STD_525_60) 602 std_type = 0; 603 dev->cur_std = std; 604 dev->width = 720; 605 dev->height = std_type ? 576 : 480; 606 607 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 608 } 609 610 static int vidioc_g_std(struct file *file, void *_fh, 611 v4l2_std_id *std) 612 { 613 struct hdpvr_device *dev = video_drvdata(file); 614 struct hdpvr_fh *fh = _fh; 615 616 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 617 return -ENODATA; 618 *std = dev->cur_std; 619 return 0; 620 } 621 622 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 623 { 624 struct hdpvr_device *dev = video_drvdata(file); 625 struct hdpvr_video_info vid_info; 626 struct hdpvr_fh *fh = _fh; 627 int ret; 628 629 *a = V4L2_STD_UNKNOWN; 630 if (dev->options.video_input == HDPVR_COMPONENT) 631 return fh->legacy_mode ? 0 : -ENODATA; 632 ret = get_video_info(dev, &vid_info); 633 if (vid_info.valid && vid_info.width == 720 && 634 (vid_info.height == 480 || vid_info.height == 576)) { 635 *a = (vid_info.height == 480) ? 636 V4L2_STD_525_60 : V4L2_STD_625_50; 637 } 638 return ret; 639 } 640 641 static int vidioc_s_dv_timings(struct file *file, void *_fh, 642 struct v4l2_dv_timings *timings) 643 { 644 struct hdpvr_device *dev = video_drvdata(file); 645 struct hdpvr_fh *fh = _fh; 646 int i; 647 648 fh->legacy_mode = false; 649 if (dev->options.video_input) 650 return -ENODATA; 651 if (dev->status != STATUS_IDLE) 652 return -EBUSY; 653 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 654 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 655 break; 656 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 657 return -EINVAL; 658 dev->cur_dv_timings = hdpvr_dv_timings[i]; 659 dev->width = hdpvr_dv_timings[i].bt.width; 660 dev->height = hdpvr_dv_timings[i].bt.height; 661 return 0; 662 } 663 664 static int vidioc_g_dv_timings(struct file *file, void *_fh, 665 struct v4l2_dv_timings *timings) 666 { 667 struct hdpvr_device *dev = video_drvdata(file); 668 struct hdpvr_fh *fh = _fh; 669 670 fh->legacy_mode = false; 671 if (dev->options.video_input) 672 return -ENODATA; 673 *timings = dev->cur_dv_timings; 674 return 0; 675 } 676 677 static int vidioc_query_dv_timings(struct file *file, void *_fh, 678 struct v4l2_dv_timings *timings) 679 { 680 struct hdpvr_device *dev = video_drvdata(file); 681 struct hdpvr_fh *fh = _fh; 682 struct hdpvr_video_info vid_info; 683 bool interlaced; 684 int ret = 0; 685 int i; 686 687 fh->legacy_mode = false; 688 if (dev->options.video_input) 689 return -ENODATA; 690 ret = get_video_info(dev, &vid_info); 691 if (ret) 692 return ret; 693 if (!vid_info.valid) 694 return -ENOLCK; 695 interlaced = vid_info.fps <= 30; 696 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 697 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 698 unsigned hsize; 699 unsigned vsize; 700 unsigned fps; 701 702 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 703 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 704 fps = (unsigned)bt->pixelclock / (hsize * vsize); 705 if (bt->width != vid_info.width || 706 bt->height != vid_info.height || 707 bt->interlaced != interlaced || 708 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 709 continue; 710 *timings = hdpvr_dv_timings[i]; 711 break; 712 } 713 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 714 ret = -ERANGE; 715 716 return ret; 717 } 718 719 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 720 struct v4l2_enum_dv_timings *timings) 721 { 722 struct hdpvr_device *dev = video_drvdata(file); 723 struct hdpvr_fh *fh = _fh; 724 725 fh->legacy_mode = false; 726 memset(timings->reserved, 0, sizeof(timings->reserved)); 727 if (dev->options.video_input) 728 return -ENODATA; 729 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 730 return -EINVAL; 731 timings->timings = hdpvr_dv_timings[timings->index]; 732 return 0; 733 } 734 735 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 736 struct v4l2_dv_timings_cap *cap) 737 { 738 struct hdpvr_device *dev = video_drvdata(file); 739 struct hdpvr_fh *fh = _fh; 740 741 fh->legacy_mode = false; 742 if (dev->options.video_input) 743 return -ENODATA; 744 cap->type = V4L2_DV_BT_656_1120; 745 cap->bt.min_width = 720; 746 cap->bt.max_width = 1920; 747 cap->bt.min_height = 480; 748 cap->bt.max_height = 1080; 749 cap->bt.min_pixelclock = 27000000; 750 cap->bt.max_pixelclock = 74250000; 751 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 752 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 753 return 0; 754 } 755 756 static const char *iname[] = { 757 [HDPVR_COMPONENT] = "Component", 758 [HDPVR_SVIDEO] = "S-Video", 759 [HDPVR_COMPOSITE] = "Composite", 760 }; 761 762 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 763 { 764 unsigned int n; 765 766 n = i->index; 767 if (n >= HDPVR_VIDEO_INPUTS) 768 return -EINVAL; 769 770 i->type = V4L2_INPUT_TYPE_CAMERA; 771 772 strscpy(i->name, iname[n], sizeof(i->name)); 773 774 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 775 776 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 777 i->std = n ? V4L2_STD_ALL : 0; 778 779 return 0; 780 } 781 782 static int vidioc_s_input(struct file *file, void *_fh, 783 unsigned int index) 784 { 785 struct hdpvr_device *dev = video_drvdata(file); 786 int retval; 787 788 if (index >= HDPVR_VIDEO_INPUTS) 789 return -EINVAL; 790 791 if (dev->status != STATUS_IDLE) 792 return -EBUSY; 793 794 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 795 if (!retval) { 796 dev->options.video_input = index; 797 /* 798 * Unfortunately gstreamer calls ENUMSTD and bails out if it 799 * won't find any formats, even though component input is 800 * selected. This means that we have to leave tvnorms at 801 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 802 * tvnorms is set at the device node level and not at the 803 * filehandle level. 804 * 805 * Comment this out for now, but if the legacy mode can be 806 * removed in the future, then this code should be enabled 807 * again. 808 dev->video_dev.tvnorms = 809 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 810 */ 811 } 812 813 return retval; 814 } 815 816 static int vidioc_g_input(struct file *file, void *private_data, 817 unsigned int *index) 818 { 819 struct hdpvr_device *dev = video_drvdata(file); 820 821 *index = dev->options.video_input; 822 return 0; 823 } 824 825 826 static const char *audio_iname[] = { 827 [HDPVR_RCA_FRONT] = "RCA front", 828 [HDPVR_RCA_BACK] = "RCA back", 829 [HDPVR_SPDIF] = "SPDIF", 830 }; 831 832 static int vidioc_enumaudio(struct file *file, void *priv, 833 struct v4l2_audio *audio) 834 { 835 unsigned int n; 836 837 n = audio->index; 838 if (n >= HDPVR_AUDIO_INPUTS) 839 return -EINVAL; 840 841 audio->capability = V4L2_AUDCAP_STEREO; 842 843 strscpy(audio->name, audio_iname[n], sizeof(audio->name)); 844 845 return 0; 846 } 847 848 static int vidioc_s_audio(struct file *file, void *private_data, 849 const struct v4l2_audio *audio) 850 { 851 struct hdpvr_device *dev = video_drvdata(file); 852 int retval; 853 854 if (audio->index >= HDPVR_AUDIO_INPUTS) 855 return -EINVAL; 856 857 if (dev->status != STATUS_IDLE) 858 return -EBUSY; 859 860 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 861 if (!retval) 862 dev->options.audio_input = audio->index; 863 864 return retval; 865 } 866 867 static int vidioc_g_audio(struct file *file, void *private_data, 868 struct v4l2_audio *audio) 869 { 870 struct hdpvr_device *dev = video_drvdata(file); 871 872 audio->index = dev->options.audio_input; 873 audio->capability = V4L2_AUDCAP_STEREO; 874 strscpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 875 return 0; 876 } 877 878 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 879 { 880 struct hdpvr_device *dev = 881 container_of(ctrl->handler, struct hdpvr_device, hdl); 882 883 switch (ctrl->id) { 884 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 885 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 886 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 887 dev->video_bitrate_peak->val = 888 dev->video_bitrate->val + 100000; 889 break; 890 } 891 return 0; 892 } 893 894 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 895 { 896 struct hdpvr_device *dev = 897 container_of(ctrl->handler, struct hdpvr_device, hdl); 898 struct hdpvr_options *opt = &dev->options; 899 int ret = -EINVAL; 900 901 switch (ctrl->id) { 902 case V4L2_CID_BRIGHTNESS: 903 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 904 if (ret) 905 break; 906 dev->options.brightness = ctrl->val; 907 return 0; 908 case V4L2_CID_CONTRAST: 909 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 910 if (ret) 911 break; 912 dev->options.contrast = ctrl->val; 913 return 0; 914 case V4L2_CID_SATURATION: 915 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 916 if (ret) 917 break; 918 dev->options.saturation = ctrl->val; 919 return 0; 920 case V4L2_CID_HUE: 921 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 922 if (ret) 923 break; 924 dev->options.hue = ctrl->val; 925 return 0; 926 case V4L2_CID_SHARPNESS: 927 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 928 if (ret) 929 break; 930 dev->options.sharpness = ctrl->val; 931 return 0; 932 case V4L2_CID_MPEG_AUDIO_ENCODING: 933 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 934 opt->audio_codec = ctrl->val; 935 return hdpvr_set_audio(dev, opt->audio_input + 1, 936 opt->audio_codec); 937 } 938 return 0; 939 case V4L2_CID_MPEG_VIDEO_ENCODING: 940 return 0; 941 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 942 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 943 /* opt->gop_mode |= 0x2; */ 944 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 945 /* opt->gop_mode); */ 946 /* } */ 947 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 948 /* opt->gop_mode &= ~0x2; */ 949 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 950 /* opt->gop_mode); */ 951 /* } */ 952 /* break; */ 953 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 954 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 955 uint bitrate = dev->video_bitrate->val / 100000; 956 957 if (ctrl->is_new) { 958 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 959 opt->bitrate_mode = HDPVR_CONSTANT; 960 else 961 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 962 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 963 opt->bitrate_mode); 964 v4l2_ctrl_activate(dev->video_bitrate_peak, 965 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 966 } 967 968 if (dev->video_bitrate_peak->is_new || 969 dev->video_bitrate->is_new) { 970 opt->bitrate = bitrate; 971 opt->peak_bitrate = peak_bitrate; 972 hdpvr_set_bitrate(dev); 973 } 974 return 0; 975 } 976 case V4L2_CID_MPEG_STREAM_TYPE: 977 return 0; 978 default: 979 break; 980 } 981 return ret; 982 } 983 984 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 985 struct v4l2_fmtdesc *f) 986 { 987 if (f->index != 0) 988 return -EINVAL; 989 990 f->pixelformat = V4L2_PIX_FMT_MPEG; 991 992 return 0; 993 } 994 995 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 996 struct v4l2_format *f) 997 { 998 struct hdpvr_device *dev = video_drvdata(file); 999 struct hdpvr_fh *fh = _fh; 1000 int ret; 1001 1002 /* 1003 * The original driver would always returns the current detected 1004 * resolution as the format (and EFAULT if it couldn't be detected). 1005 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 1006 * better way of doing this, but to stay compatible with existing 1007 * applications we assume legacy mode every time an application opens 1008 * the device. Only if one of the new DV_TIMINGS ioctls is called 1009 * will the filehandle go into 'normal' mode where g_fmt returns the 1010 * last set format. 1011 */ 1012 if (fh->legacy_mode) { 1013 struct hdpvr_video_info vid_info; 1014 1015 ret = get_video_info(dev, &vid_info); 1016 if (ret < 0) 1017 return ret; 1018 if (!vid_info.valid) 1019 return -EFAULT; 1020 f->fmt.pix.width = vid_info.width; 1021 f->fmt.pix.height = vid_info.height; 1022 } else { 1023 f->fmt.pix.width = dev->width; 1024 f->fmt.pix.height = dev->height; 1025 } 1026 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1027 f->fmt.pix.sizeimage = dev->bulk_in_size; 1028 f->fmt.pix.bytesperline = 0; 1029 if (f->fmt.pix.width == 720) { 1030 /* SDTV formats */ 1031 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1032 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1033 } else { 1034 /* HDTV formats */ 1035 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; 1036 f->fmt.pix.field = V4L2_FIELD_NONE; 1037 } 1038 return 0; 1039 } 1040 1041 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1042 struct v4l2_encoder_cmd *a) 1043 { 1044 struct hdpvr_device *dev = video_drvdata(filp); 1045 int res = 0; 1046 1047 mutex_lock(&dev->io_mutex); 1048 a->flags = 0; 1049 1050 switch (a->cmd) { 1051 case V4L2_ENC_CMD_START: 1052 if (dev->owner && filp->private_data != dev->owner) { 1053 res = -EBUSY; 1054 break; 1055 } 1056 if (dev->status == STATUS_STREAMING) 1057 break; 1058 res = hdpvr_start_streaming(dev); 1059 if (!res) 1060 dev->owner = filp->private_data; 1061 else 1062 dev->status = STATUS_IDLE; 1063 break; 1064 case V4L2_ENC_CMD_STOP: 1065 if (dev->owner && filp->private_data != dev->owner) { 1066 res = -EBUSY; 1067 break; 1068 } 1069 if (dev->status == STATUS_IDLE) 1070 break; 1071 res = hdpvr_stop_streaming(dev); 1072 if (!res) 1073 dev->owner = NULL; 1074 break; 1075 default: 1076 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1077 "Unsupported encoder cmd %d\n", a->cmd); 1078 res = -EINVAL; 1079 break; 1080 } 1081 1082 mutex_unlock(&dev->io_mutex); 1083 return res; 1084 } 1085 1086 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1087 struct v4l2_encoder_cmd *a) 1088 { 1089 a->flags = 0; 1090 switch (a->cmd) { 1091 case V4L2_ENC_CMD_START: 1092 case V4L2_ENC_CMD_STOP: 1093 return 0; 1094 default: 1095 return -EINVAL; 1096 } 1097 } 1098 1099 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1100 .vidioc_querycap = vidioc_querycap, 1101 .vidioc_s_std = vidioc_s_std, 1102 .vidioc_g_std = vidioc_g_std, 1103 .vidioc_querystd = vidioc_querystd, 1104 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1105 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1106 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1107 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1108 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1109 .vidioc_enum_input = vidioc_enum_input, 1110 .vidioc_g_input = vidioc_g_input, 1111 .vidioc_s_input = vidioc_s_input, 1112 .vidioc_enumaudio = vidioc_enumaudio, 1113 .vidioc_g_audio = vidioc_g_audio, 1114 .vidioc_s_audio = vidioc_s_audio, 1115 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1116 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1117 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1118 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1119 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1120 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1121 .vidioc_log_status = v4l2_ctrl_log_status, 1122 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1123 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1124 }; 1125 1126 static void hdpvr_device_release(struct video_device *vdev) 1127 { 1128 struct hdpvr_device *dev = video_get_drvdata(vdev); 1129 1130 hdpvr_delete(dev); 1131 flush_work(&dev->worker); 1132 1133 v4l2_device_unregister(&dev->v4l2_dev); 1134 v4l2_ctrl_handler_free(&dev->hdl); 1135 1136 /* deregister I2C adapter */ 1137 #if IS_ENABLED(CONFIG_I2C) 1138 mutex_lock(&dev->i2c_mutex); 1139 i2c_del_adapter(&dev->i2c_adapter); 1140 mutex_unlock(&dev->i2c_mutex); 1141 #endif /* CONFIG_I2C */ 1142 1143 kfree(dev->usbc_buf); 1144 kfree(dev); 1145 } 1146 1147 static const struct video_device hdpvr_video_template = { 1148 .fops = &hdpvr_fops, 1149 .release = hdpvr_device_release, 1150 .ioctl_ops = &hdpvr_ioctl_ops, 1151 .tvnorms = V4L2_STD_ALL, 1152 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 1153 V4L2_CAP_READWRITE, 1154 }; 1155 1156 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1157 .try_ctrl = hdpvr_try_ctrl, 1158 .s_ctrl = hdpvr_s_ctrl, 1159 }; 1160 1161 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1162 int devnum) 1163 { 1164 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1165 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1166 int res; 1167 1168 dev->cur_std = V4L2_STD_525_60; 1169 dev->width = 720; 1170 dev->height = 480; 1171 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1172 v4l2_ctrl_handler_init(hdl, 11); 1173 if (dev->fw_ver > 0x15) { 1174 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1175 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1179 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1181 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1182 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1183 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1184 } else { 1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1186 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1190 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1191 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1192 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1193 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1194 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1195 } 1196 1197 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1198 V4L2_CID_MPEG_STREAM_TYPE, 1199 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1200 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1201 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1202 V4L2_CID_MPEG_AUDIO_ENCODING, 1203 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1204 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1205 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1206 V4L2_CID_MPEG_VIDEO_ENCODING, 1207 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1208 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1209 1210 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1211 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1212 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1213 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1214 1215 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1216 V4L2_CID_MPEG_VIDEO_BITRATE, 1217 1000000, 13500000, 100000, 6500000); 1218 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1219 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1220 1100000, 20200000, 100000, 9000000); 1221 dev->v4l2_dev.ctrl_handler = hdl; 1222 if (hdl->error) { 1223 res = hdl->error; 1224 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1225 goto error; 1226 } 1227 v4l2_ctrl_cluster(3, &dev->video_mode); 1228 res = v4l2_ctrl_handler_setup(hdl); 1229 if (res < 0) { 1230 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1231 goto error; 1232 } 1233 1234 /* setup and register video device */ 1235 dev->video_dev = hdpvr_video_template; 1236 strscpy(dev->video_dev.name, "Hauppauge HD PVR", 1237 sizeof(dev->video_dev.name)); 1238 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1239 video_set_drvdata(&dev->video_dev, dev); 1240 1241 res = video_register_device(&dev->video_dev, VFL_TYPE_VIDEO, devnum); 1242 if (res < 0) { 1243 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1244 goto error; 1245 } 1246 1247 return 0; 1248 error: 1249 v4l2_ctrl_handler_free(hdl); 1250 return res; 1251 } 1252