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