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 return -ERESTARTSYS; 467 } 468 469 if (buf->status != BUFSTAT_READY) 470 break; 471 472 /* set remaining bytes to copy */ 473 urb = buf->urb; 474 rem = urb->actual_length - buf->pos; 475 cnt = rem > count ? count : rem; 476 477 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 478 cnt)) { 479 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 480 if (!ret) 481 ret = -EFAULT; 482 goto err; 483 } 484 485 buf->pos += cnt; 486 count -= cnt; 487 buffer += cnt; 488 ret += cnt; 489 490 /* finished, take next buffer */ 491 if (buf->pos == urb->actual_length) { 492 mutex_lock(&dev->io_mutex); 493 buf->pos = 0; 494 buf->status = BUFSTAT_AVAILABLE; 495 496 list_move_tail(&buf->buff_list, &dev->free_buff_list); 497 498 print_buffer_status(); 499 500 mutex_unlock(&dev->io_mutex); 501 502 wake_up_interruptible(&dev->wait_buffer); 503 504 buf = hdpvr_get_next_buffer(dev); 505 } 506 } 507 err: 508 if (!ret && !buf) 509 ret = -EAGAIN; 510 return ret; 511 } 512 513 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait) 514 { 515 unsigned long req_events = poll_requested_events(wait); 516 struct hdpvr_buffer *buf = NULL; 517 struct hdpvr_device *dev = video_drvdata(filp); 518 unsigned int mask = v4l2_ctrl_poll(filp, wait); 519 520 if (!(req_events & (POLLIN | POLLRDNORM))) 521 return mask; 522 523 mutex_lock(&dev->io_mutex); 524 525 if (dev->status == STATUS_IDLE) { 526 if (hdpvr_start_streaming(dev)) { 527 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 528 "start_streaming failed\n"); 529 dev->status = STATUS_IDLE; 530 } else { 531 dev->owner = filp->private_data; 532 } 533 534 print_buffer_status(); 535 } 536 mutex_unlock(&dev->io_mutex); 537 538 buf = hdpvr_get_next_buffer(dev); 539 /* only wait if no data is available */ 540 if (!buf || buf->status != BUFSTAT_READY) { 541 poll_wait(filp, &dev->wait_data, wait); 542 buf = hdpvr_get_next_buffer(dev); 543 } 544 if (buf && buf->status == BUFSTAT_READY) 545 mask |= POLLIN | POLLRDNORM; 546 547 return mask; 548 } 549 550 551 static const struct v4l2_file_operations hdpvr_fops = { 552 .owner = THIS_MODULE, 553 .open = hdpvr_open, 554 .release = hdpvr_release, 555 .read = hdpvr_read, 556 .poll = hdpvr_poll, 557 .unlocked_ioctl = video_ioctl2, 558 }; 559 560 /*=======================================================================*/ 561 /* 562 * V4L2 ioctl handling 563 */ 564 565 static int vidioc_querycap(struct file *file, void *priv, 566 struct v4l2_capability *cap) 567 { 568 struct hdpvr_device *dev = video_drvdata(file); 569 570 strcpy(cap->driver, "hdpvr"); 571 strcpy(cap->card, "Hauppauge HD PVR"); 572 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 573 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 574 V4L2_CAP_READWRITE; 575 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 576 return 0; 577 } 578 579 static int vidioc_s_std(struct file *file, void *_fh, 580 v4l2_std_id std) 581 { 582 struct hdpvr_device *dev = video_drvdata(file); 583 struct hdpvr_fh *fh = _fh; 584 u8 std_type = 1; 585 586 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 587 return -ENODATA; 588 if (dev->status != STATUS_IDLE) 589 return -EBUSY; 590 if (std & V4L2_STD_525_60) 591 std_type = 0; 592 dev->cur_std = std; 593 dev->width = 720; 594 dev->height = std_type ? 576 : 480; 595 596 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 597 } 598 599 static int vidioc_g_std(struct file *file, void *_fh, 600 v4l2_std_id *std) 601 { 602 struct hdpvr_device *dev = video_drvdata(file); 603 struct hdpvr_fh *fh = _fh; 604 605 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 606 return -ENODATA; 607 *std = dev->cur_std; 608 return 0; 609 } 610 611 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 612 { 613 struct hdpvr_device *dev = video_drvdata(file); 614 struct hdpvr_video_info vid_info; 615 struct hdpvr_fh *fh = _fh; 616 int ret; 617 618 *a = V4L2_STD_UNKNOWN; 619 if (dev->options.video_input == HDPVR_COMPONENT) 620 return fh->legacy_mode ? 0 : -ENODATA; 621 ret = get_video_info(dev, &vid_info); 622 if (vid_info.valid && vid_info.width == 720 && 623 (vid_info.height == 480 || vid_info.height == 576)) { 624 *a = (vid_info.height == 480) ? 625 V4L2_STD_525_60 : V4L2_STD_625_50; 626 } 627 return ret; 628 } 629 630 static int vidioc_s_dv_timings(struct file *file, void *_fh, 631 struct v4l2_dv_timings *timings) 632 { 633 struct hdpvr_device *dev = video_drvdata(file); 634 struct hdpvr_fh *fh = _fh; 635 int i; 636 637 fh->legacy_mode = false; 638 if (dev->options.video_input) 639 return -ENODATA; 640 if (dev->status != STATUS_IDLE) 641 return -EBUSY; 642 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 643 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 644 break; 645 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 646 return -EINVAL; 647 dev->cur_dv_timings = hdpvr_dv_timings[i]; 648 dev->width = hdpvr_dv_timings[i].bt.width; 649 dev->height = hdpvr_dv_timings[i].bt.height; 650 return 0; 651 } 652 653 static int vidioc_g_dv_timings(struct file *file, void *_fh, 654 struct v4l2_dv_timings *timings) 655 { 656 struct hdpvr_device *dev = video_drvdata(file); 657 struct hdpvr_fh *fh = _fh; 658 659 fh->legacy_mode = false; 660 if (dev->options.video_input) 661 return -ENODATA; 662 *timings = dev->cur_dv_timings; 663 return 0; 664 } 665 666 static int vidioc_query_dv_timings(struct file *file, void *_fh, 667 struct v4l2_dv_timings *timings) 668 { 669 struct hdpvr_device *dev = video_drvdata(file); 670 struct hdpvr_fh *fh = _fh; 671 struct hdpvr_video_info vid_info; 672 bool interlaced; 673 int ret = 0; 674 int i; 675 676 fh->legacy_mode = false; 677 if (dev->options.video_input) 678 return -ENODATA; 679 ret = get_video_info(dev, &vid_info); 680 if (ret) 681 return ret; 682 if (!vid_info.valid) 683 return -ENOLCK; 684 interlaced = vid_info.fps <= 30; 685 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 686 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 687 unsigned hsize; 688 unsigned vsize; 689 unsigned fps; 690 691 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 692 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 693 fps = (unsigned)bt->pixelclock / (hsize * vsize); 694 if (bt->width != vid_info.width || 695 bt->height != vid_info.height || 696 bt->interlaced != interlaced || 697 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 698 continue; 699 *timings = hdpvr_dv_timings[i]; 700 break; 701 } 702 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 703 ret = -ERANGE; 704 705 return ret; 706 } 707 708 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 709 struct v4l2_enum_dv_timings *timings) 710 { 711 struct hdpvr_device *dev = video_drvdata(file); 712 struct hdpvr_fh *fh = _fh; 713 714 fh->legacy_mode = false; 715 memset(timings->reserved, 0, sizeof(timings->reserved)); 716 if (dev->options.video_input) 717 return -ENODATA; 718 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 719 return -EINVAL; 720 timings->timings = hdpvr_dv_timings[timings->index]; 721 return 0; 722 } 723 724 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 725 struct v4l2_dv_timings_cap *cap) 726 { 727 struct hdpvr_device *dev = video_drvdata(file); 728 struct hdpvr_fh *fh = _fh; 729 730 fh->legacy_mode = false; 731 if (dev->options.video_input) 732 return -ENODATA; 733 cap->type = V4L2_DV_BT_656_1120; 734 cap->bt.min_width = 720; 735 cap->bt.max_width = 1920; 736 cap->bt.min_height = 480; 737 cap->bt.max_height = 1080; 738 cap->bt.min_pixelclock = 27000000; 739 cap->bt.max_pixelclock = 74250000; 740 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 741 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 742 return 0; 743 } 744 745 static const char *iname[] = { 746 [HDPVR_COMPONENT] = "Component", 747 [HDPVR_SVIDEO] = "S-Video", 748 [HDPVR_COMPOSITE] = "Composite", 749 }; 750 751 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 752 { 753 unsigned int n; 754 755 n = i->index; 756 if (n >= HDPVR_VIDEO_INPUTS) 757 return -EINVAL; 758 759 i->type = V4L2_INPUT_TYPE_CAMERA; 760 761 strncpy(i->name, iname[n], sizeof(i->name) - 1); 762 i->name[sizeof(i->name) - 1] = '\0'; 763 764 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 765 766 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 767 i->std = n ? V4L2_STD_ALL : 0; 768 769 return 0; 770 } 771 772 static int vidioc_s_input(struct file *file, void *_fh, 773 unsigned int index) 774 { 775 struct hdpvr_device *dev = video_drvdata(file); 776 int retval; 777 778 if (index >= HDPVR_VIDEO_INPUTS) 779 return -EINVAL; 780 781 if (dev->status != STATUS_IDLE) 782 return -EBUSY; 783 784 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 785 if (!retval) { 786 dev->options.video_input = index; 787 /* 788 * Unfortunately gstreamer calls ENUMSTD and bails out if it 789 * won't find any formats, even though component input is 790 * selected. This means that we have to leave tvnorms at 791 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 792 * tvnorms is set at the device node level and not at the 793 * filehandle level. 794 * 795 * Comment this out for now, but if the legacy mode can be 796 * removed in the future, then this code should be enabled 797 * again. 798 dev->video_dev.tvnorms = 799 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 800 */ 801 } 802 803 return retval; 804 } 805 806 static int vidioc_g_input(struct file *file, void *private_data, 807 unsigned int *index) 808 { 809 struct hdpvr_device *dev = video_drvdata(file); 810 811 *index = dev->options.video_input; 812 return 0; 813 } 814 815 816 static const char *audio_iname[] = { 817 [HDPVR_RCA_FRONT] = "RCA front", 818 [HDPVR_RCA_BACK] = "RCA back", 819 [HDPVR_SPDIF] = "SPDIF", 820 }; 821 822 static int vidioc_enumaudio(struct file *file, void *priv, 823 struct v4l2_audio *audio) 824 { 825 unsigned int n; 826 827 n = audio->index; 828 if (n >= HDPVR_AUDIO_INPUTS) 829 return -EINVAL; 830 831 audio->capability = V4L2_AUDCAP_STEREO; 832 833 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1); 834 audio->name[sizeof(audio->name) - 1] = '\0'; 835 836 return 0; 837 } 838 839 static int vidioc_s_audio(struct file *file, void *private_data, 840 const struct v4l2_audio *audio) 841 { 842 struct hdpvr_device *dev = video_drvdata(file); 843 int retval; 844 845 if (audio->index >= HDPVR_AUDIO_INPUTS) 846 return -EINVAL; 847 848 if (dev->status != STATUS_IDLE) 849 return -EBUSY; 850 851 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 852 if (!retval) 853 dev->options.audio_input = audio->index; 854 855 return retval; 856 } 857 858 static int vidioc_g_audio(struct file *file, void *private_data, 859 struct v4l2_audio *audio) 860 { 861 struct hdpvr_device *dev = video_drvdata(file); 862 863 audio->index = dev->options.audio_input; 864 audio->capability = V4L2_AUDCAP_STEREO; 865 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 866 audio->name[sizeof(audio->name) - 1] = '\0'; 867 return 0; 868 } 869 870 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 871 { 872 struct hdpvr_device *dev = 873 container_of(ctrl->handler, struct hdpvr_device, hdl); 874 875 switch (ctrl->id) { 876 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 877 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 878 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 879 dev->video_bitrate_peak->val = 880 dev->video_bitrate->val + 100000; 881 break; 882 } 883 return 0; 884 } 885 886 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 887 { 888 struct hdpvr_device *dev = 889 container_of(ctrl->handler, struct hdpvr_device, hdl); 890 struct hdpvr_options *opt = &dev->options; 891 int ret = -EINVAL; 892 893 switch (ctrl->id) { 894 case V4L2_CID_BRIGHTNESS: 895 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 896 if (ret) 897 break; 898 dev->options.brightness = ctrl->val; 899 return 0; 900 case V4L2_CID_CONTRAST: 901 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 902 if (ret) 903 break; 904 dev->options.contrast = ctrl->val; 905 return 0; 906 case V4L2_CID_SATURATION: 907 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 908 if (ret) 909 break; 910 dev->options.saturation = ctrl->val; 911 return 0; 912 case V4L2_CID_HUE: 913 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 914 if (ret) 915 break; 916 dev->options.hue = ctrl->val; 917 return 0; 918 case V4L2_CID_SHARPNESS: 919 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 920 if (ret) 921 break; 922 dev->options.sharpness = ctrl->val; 923 return 0; 924 case V4L2_CID_MPEG_AUDIO_ENCODING: 925 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 926 opt->audio_codec = ctrl->val; 927 return hdpvr_set_audio(dev, opt->audio_input + 1, 928 opt->audio_codec); 929 } 930 return 0; 931 case V4L2_CID_MPEG_VIDEO_ENCODING: 932 return 0; 933 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 934 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 935 /* opt->gop_mode |= 0x2; */ 936 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 937 /* opt->gop_mode); */ 938 /* } */ 939 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 940 /* opt->gop_mode &= ~0x2; */ 941 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 942 /* opt->gop_mode); */ 943 /* } */ 944 /* break; */ 945 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 946 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 947 uint bitrate = dev->video_bitrate->val / 100000; 948 949 if (ctrl->is_new) { 950 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 951 opt->bitrate_mode = HDPVR_CONSTANT; 952 else 953 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 954 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 955 opt->bitrate_mode); 956 v4l2_ctrl_activate(dev->video_bitrate_peak, 957 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 958 } 959 960 if (dev->video_bitrate_peak->is_new || 961 dev->video_bitrate->is_new) { 962 opt->bitrate = bitrate; 963 opt->peak_bitrate = peak_bitrate; 964 hdpvr_set_bitrate(dev); 965 } 966 return 0; 967 } 968 case V4L2_CID_MPEG_STREAM_TYPE: 969 return 0; 970 default: 971 break; 972 } 973 return ret; 974 } 975 976 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 977 struct v4l2_fmtdesc *f) 978 { 979 if (f->index != 0) 980 return -EINVAL; 981 982 f->flags = V4L2_FMT_FLAG_COMPRESSED; 983 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32); 984 f->pixelformat = V4L2_PIX_FMT_MPEG; 985 986 return 0; 987 } 988 989 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 990 struct v4l2_format *f) 991 { 992 struct hdpvr_device *dev = video_drvdata(file); 993 struct hdpvr_fh *fh = _fh; 994 int ret; 995 996 /* 997 * The original driver would always returns the current detected 998 * resolution as the format (and EFAULT if it couldn't be detected). 999 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 1000 * better way of doing this, but to stay compatible with existing 1001 * applications we assume legacy mode every time an application opens 1002 * the device. Only if one of the new DV_TIMINGS ioctls is called 1003 * will the filehandle go into 'normal' mode where g_fmt returns the 1004 * last set format. 1005 */ 1006 if (fh->legacy_mode) { 1007 struct hdpvr_video_info vid_info; 1008 1009 ret = get_video_info(dev, &vid_info); 1010 if (ret < 0) 1011 return ret; 1012 if (!vid_info.valid) 1013 return -EFAULT; 1014 f->fmt.pix.width = vid_info.width; 1015 f->fmt.pix.height = vid_info.height; 1016 } else { 1017 f->fmt.pix.width = dev->width; 1018 f->fmt.pix.height = dev->height; 1019 } 1020 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1021 f->fmt.pix.sizeimage = dev->bulk_in_size; 1022 f->fmt.pix.bytesperline = 0; 1023 if (f->fmt.pix.width == 720) { 1024 /* SDTV formats */ 1025 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1026 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1027 } else { 1028 /* HDTV formats */ 1029 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; 1030 f->fmt.pix.field = V4L2_FIELD_NONE; 1031 } 1032 return 0; 1033 } 1034 1035 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1036 struct v4l2_encoder_cmd *a) 1037 { 1038 struct hdpvr_device *dev = video_drvdata(filp); 1039 int res = 0; 1040 1041 mutex_lock(&dev->io_mutex); 1042 a->flags = 0; 1043 1044 switch (a->cmd) { 1045 case V4L2_ENC_CMD_START: 1046 if (dev->owner && filp->private_data != dev->owner) { 1047 res = -EBUSY; 1048 break; 1049 } 1050 if (dev->status == STATUS_STREAMING) 1051 break; 1052 res = hdpvr_start_streaming(dev); 1053 if (!res) 1054 dev->owner = filp->private_data; 1055 else 1056 dev->status = STATUS_IDLE; 1057 break; 1058 case V4L2_ENC_CMD_STOP: 1059 if (dev->owner && filp->private_data != dev->owner) { 1060 res = -EBUSY; 1061 break; 1062 } 1063 if (dev->status == STATUS_IDLE) 1064 break; 1065 res = hdpvr_stop_streaming(dev); 1066 if (!res) 1067 dev->owner = NULL; 1068 break; 1069 default: 1070 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1071 "Unsupported encoder cmd %d\n", a->cmd); 1072 res = -EINVAL; 1073 break; 1074 } 1075 1076 mutex_unlock(&dev->io_mutex); 1077 return res; 1078 } 1079 1080 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1081 struct v4l2_encoder_cmd *a) 1082 { 1083 a->flags = 0; 1084 switch (a->cmd) { 1085 case V4L2_ENC_CMD_START: 1086 case V4L2_ENC_CMD_STOP: 1087 return 0; 1088 default: 1089 return -EINVAL; 1090 } 1091 } 1092 1093 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1094 .vidioc_querycap = vidioc_querycap, 1095 .vidioc_s_std = vidioc_s_std, 1096 .vidioc_g_std = vidioc_g_std, 1097 .vidioc_querystd = vidioc_querystd, 1098 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1099 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1100 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1101 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1102 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1103 .vidioc_enum_input = vidioc_enum_input, 1104 .vidioc_g_input = vidioc_g_input, 1105 .vidioc_s_input = vidioc_s_input, 1106 .vidioc_enumaudio = vidioc_enumaudio, 1107 .vidioc_g_audio = vidioc_g_audio, 1108 .vidioc_s_audio = vidioc_s_audio, 1109 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1110 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1111 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1112 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1113 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1114 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1115 .vidioc_log_status = v4l2_ctrl_log_status, 1116 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1117 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1118 }; 1119 1120 static void hdpvr_device_release(struct video_device *vdev) 1121 { 1122 struct hdpvr_device *dev = video_get_drvdata(vdev); 1123 1124 hdpvr_delete(dev); 1125 mutex_lock(&dev->io_mutex); 1126 destroy_workqueue(dev->workqueue); 1127 mutex_unlock(&dev->io_mutex); 1128 1129 v4l2_device_unregister(&dev->v4l2_dev); 1130 v4l2_ctrl_handler_free(&dev->hdl); 1131 1132 /* deregister I2C adapter */ 1133 #if IS_ENABLED(CONFIG_I2C) 1134 mutex_lock(&dev->i2c_mutex); 1135 i2c_del_adapter(&dev->i2c_adapter); 1136 mutex_unlock(&dev->i2c_mutex); 1137 #endif /* CONFIG_I2C */ 1138 1139 kfree(dev->usbc_buf); 1140 kfree(dev); 1141 } 1142 1143 static const struct video_device hdpvr_video_template = { 1144 .fops = &hdpvr_fops, 1145 .release = hdpvr_device_release, 1146 .ioctl_ops = &hdpvr_ioctl_ops, 1147 .tvnorms = V4L2_STD_ALL, 1148 }; 1149 1150 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1151 .try_ctrl = hdpvr_try_ctrl, 1152 .s_ctrl = hdpvr_s_ctrl, 1153 }; 1154 1155 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1156 int devnum) 1157 { 1158 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1159 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1160 int res; 1161 1162 dev->cur_std = V4L2_STD_525_60; 1163 dev->width = 720; 1164 dev->height = 480; 1165 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1166 v4l2_ctrl_handler_init(hdl, 11); 1167 if (dev->fw_ver > 0x15) { 1168 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1169 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1170 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1171 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1172 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1173 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1174 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1175 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1178 } else { 1179 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1180 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1182 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1184 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1186 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1189 } 1190 1191 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1192 V4L2_CID_MPEG_STREAM_TYPE, 1193 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1194 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1195 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1196 V4L2_CID_MPEG_AUDIO_ENCODING, 1197 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1198 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1199 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1200 V4L2_CID_MPEG_VIDEO_ENCODING, 1201 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1202 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1203 1204 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1205 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1206 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1207 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1208 1209 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1210 V4L2_CID_MPEG_VIDEO_BITRATE, 1211 1000000, 13500000, 100000, 6500000); 1212 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1213 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1214 1100000, 20200000, 100000, 9000000); 1215 dev->v4l2_dev.ctrl_handler = hdl; 1216 if (hdl->error) { 1217 res = hdl->error; 1218 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1219 goto error; 1220 } 1221 v4l2_ctrl_cluster(3, &dev->video_mode); 1222 res = v4l2_ctrl_handler_setup(hdl); 1223 if (res < 0) { 1224 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1225 goto error; 1226 } 1227 1228 /* setup and register video device */ 1229 dev->video_dev = hdpvr_video_template; 1230 strcpy(dev->video_dev.name, "Hauppauge HD PVR"); 1231 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1232 video_set_drvdata(&dev->video_dev, dev); 1233 1234 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum); 1235 if (res < 0) { 1236 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1237 goto error; 1238 } 1239 1240 return 0; 1241 error: 1242 v4l2_ctrl_handler_free(hdl); 1243 return res; 1244 } 1245