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