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 " 340 "for emptying the internal device buffer. " 341 "Next capture start will be slow\n"); 342 343 dev->status = STATUS_SHUTTING_DOWN; 344 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 345 mutex_unlock(&dev->io_mutex); 346 347 wake_up_interruptible(&dev->wait_buffer); 348 msleep(50); 349 350 flush_work(&dev->worker); 351 352 mutex_lock(&dev->io_mutex); 353 /* kill the still outstanding urbs */ 354 hdpvr_cancel_queue(dev); 355 356 /* emptying the device buffer beforeshutting it down */ 357 while (buf && ++c < 500 && 358 !usb_bulk_msg(dev->udev, 359 usb_rcvbulkpipe(dev->udev, 360 dev->bulk_in_endpointAddr), 361 buf, dev->bulk_in_size, &actual_length, 362 BULK_URB_TIMEOUT)) { 363 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 364 "%2d: got %d bytes\n", c, actual_length); 365 } 366 kfree(buf); 367 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 368 "used %d urbs to empty device buffers\n", c-1); 369 msleep(10); 370 371 dev->status = STATUS_IDLE; 372 373 return 0; 374 } 375 376 377 /*=======================================================================*/ 378 /* 379 * video 4 linux 2 file operations 380 */ 381 382 static int hdpvr_open(struct file *file) 383 { 384 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 385 386 if (fh == NULL) 387 return -ENOMEM; 388 fh->legacy_mode = true; 389 v4l2_fh_init(&fh->fh, video_devdata(file)); 390 v4l2_fh_add(&fh->fh); 391 file->private_data = fh; 392 return 0; 393 } 394 395 static int hdpvr_release(struct file *file) 396 { 397 struct hdpvr_device *dev = video_drvdata(file); 398 399 mutex_lock(&dev->io_mutex); 400 if (file->private_data == dev->owner) { 401 hdpvr_stop_streaming(dev); 402 dev->owner = NULL; 403 } 404 mutex_unlock(&dev->io_mutex); 405 406 return v4l2_fh_release(file); 407 } 408 409 /* 410 * hdpvr_v4l2_read() 411 * will allocate buffers when called for the first time 412 */ 413 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 414 loff_t *pos) 415 { 416 struct hdpvr_device *dev = video_drvdata(file); 417 struct hdpvr_buffer *buf = NULL; 418 struct urb *urb; 419 unsigned int ret = 0; 420 int rem, cnt; 421 422 if (*pos) 423 return -ESPIPE; 424 425 mutex_lock(&dev->io_mutex); 426 if (dev->status == STATUS_IDLE) { 427 if (hdpvr_start_streaming(dev)) { 428 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 429 "start_streaming failed\n"); 430 ret = -EIO; 431 msleep(200); 432 dev->status = STATUS_IDLE; 433 mutex_unlock(&dev->io_mutex); 434 goto err; 435 } 436 dev->owner = file->private_data; 437 print_buffer_status(); 438 } 439 mutex_unlock(&dev->io_mutex); 440 441 /* wait for the first buffer */ 442 if (!(file->f_flags & O_NONBLOCK)) { 443 if (wait_event_interruptible(dev->wait_data, 444 hdpvr_get_next_buffer(dev))) 445 return -ERESTARTSYS; 446 } 447 448 buf = hdpvr_get_next_buffer(dev); 449 450 while (count > 0 && buf) { 451 452 if (buf->status != BUFSTAT_READY && 453 dev->status != STATUS_DISCONNECTED) { 454 /* return nonblocking */ 455 if (file->f_flags & O_NONBLOCK) { 456 if (!ret) 457 ret = -EAGAIN; 458 goto err; 459 } 460 461 if (wait_event_interruptible(dev->wait_data, 462 buf->status == BUFSTAT_READY)) 463 return -ERESTARTSYS; 464 } 465 466 if (buf->status != BUFSTAT_READY) 467 break; 468 469 /* set remaining bytes to copy */ 470 urb = buf->urb; 471 rem = urb->actual_length - buf->pos; 472 cnt = rem > count ? count : rem; 473 474 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 475 cnt)) { 476 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 477 if (!ret) 478 ret = -EFAULT; 479 goto err; 480 } 481 482 buf->pos += cnt; 483 count -= cnt; 484 buffer += cnt; 485 ret += cnt; 486 487 /* finished, take next buffer */ 488 if (buf->pos == urb->actual_length) { 489 mutex_lock(&dev->io_mutex); 490 buf->pos = 0; 491 buf->status = BUFSTAT_AVAILABLE; 492 493 list_move_tail(&buf->buff_list, &dev->free_buff_list); 494 495 print_buffer_status(); 496 497 mutex_unlock(&dev->io_mutex); 498 499 wake_up_interruptible(&dev->wait_buffer); 500 501 buf = hdpvr_get_next_buffer(dev); 502 } 503 } 504 err: 505 if (!ret && !buf) 506 ret = -EAGAIN; 507 return ret; 508 } 509 510 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait) 511 { 512 unsigned long req_events = poll_requested_events(wait); 513 struct hdpvr_buffer *buf = NULL; 514 struct hdpvr_device *dev = video_drvdata(filp); 515 unsigned int mask = v4l2_ctrl_poll(filp, wait); 516 517 if (!(req_events & (POLLIN | POLLRDNORM))) 518 return mask; 519 520 mutex_lock(&dev->io_mutex); 521 522 if (dev->status == STATUS_IDLE) { 523 if (hdpvr_start_streaming(dev)) { 524 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 525 "start_streaming failed\n"); 526 dev->status = STATUS_IDLE; 527 } else { 528 dev->owner = filp->private_data; 529 } 530 531 print_buffer_status(); 532 } 533 mutex_unlock(&dev->io_mutex); 534 535 buf = hdpvr_get_next_buffer(dev); 536 /* only wait if no data is available */ 537 if (!buf || buf->status != BUFSTAT_READY) { 538 poll_wait(filp, &dev->wait_data, wait); 539 buf = hdpvr_get_next_buffer(dev); 540 } 541 if (buf && buf->status == BUFSTAT_READY) 542 mask |= POLLIN | POLLRDNORM; 543 544 return mask; 545 } 546 547 548 static const struct v4l2_file_operations hdpvr_fops = { 549 .owner = THIS_MODULE, 550 .open = hdpvr_open, 551 .release = hdpvr_release, 552 .read = hdpvr_read, 553 .poll = hdpvr_poll, 554 .unlocked_ioctl = video_ioctl2, 555 }; 556 557 /*=======================================================================*/ 558 /* 559 * V4L2 ioctl handling 560 */ 561 562 static int vidioc_querycap(struct file *file, void *priv, 563 struct v4l2_capability *cap) 564 { 565 struct hdpvr_device *dev = video_drvdata(file); 566 567 strcpy(cap->driver, "hdpvr"); 568 strcpy(cap->card, "Hauppauge HD PVR"); 569 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 570 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 571 V4L2_CAP_READWRITE; 572 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 573 return 0; 574 } 575 576 static int vidioc_s_std(struct file *file, void *_fh, 577 v4l2_std_id std) 578 { 579 struct hdpvr_device *dev = video_drvdata(file); 580 struct hdpvr_fh *fh = _fh; 581 u8 std_type = 1; 582 583 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 584 return -ENODATA; 585 if (dev->status != STATUS_IDLE) 586 return -EBUSY; 587 if (std & V4L2_STD_525_60) 588 std_type = 0; 589 dev->cur_std = std; 590 dev->width = 720; 591 dev->height = std_type ? 576 : 480; 592 593 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 594 } 595 596 static int vidioc_g_std(struct file *file, void *_fh, 597 v4l2_std_id *std) 598 { 599 struct hdpvr_device *dev = video_drvdata(file); 600 struct hdpvr_fh *fh = _fh; 601 602 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 603 return -ENODATA; 604 *std = dev->cur_std; 605 return 0; 606 } 607 608 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 609 { 610 struct hdpvr_device *dev = video_drvdata(file); 611 struct hdpvr_video_info vid_info; 612 struct hdpvr_fh *fh = _fh; 613 int ret; 614 615 *a = V4L2_STD_UNKNOWN; 616 if (dev->options.video_input == HDPVR_COMPONENT) 617 return fh->legacy_mode ? 0 : -ENODATA; 618 ret = get_video_info(dev, &vid_info); 619 if (vid_info.valid && vid_info.width == 720 && 620 (vid_info.height == 480 || vid_info.height == 576)) { 621 *a = (vid_info.height == 480) ? 622 V4L2_STD_525_60 : V4L2_STD_625_50; 623 } 624 return ret; 625 } 626 627 static int vidioc_s_dv_timings(struct file *file, void *_fh, 628 struct v4l2_dv_timings *timings) 629 { 630 struct hdpvr_device *dev = video_drvdata(file); 631 struct hdpvr_fh *fh = _fh; 632 int i; 633 634 fh->legacy_mode = false; 635 if (dev->options.video_input) 636 return -ENODATA; 637 if (dev->status != STATUS_IDLE) 638 return -EBUSY; 639 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 640 if (v4l2_match_dv_timings(timings, hdpvr_dv_timings + i, 0, false)) 641 break; 642 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 643 return -EINVAL; 644 dev->cur_dv_timings = hdpvr_dv_timings[i]; 645 dev->width = hdpvr_dv_timings[i].bt.width; 646 dev->height = hdpvr_dv_timings[i].bt.height; 647 return 0; 648 } 649 650 static int vidioc_g_dv_timings(struct file *file, void *_fh, 651 struct v4l2_dv_timings *timings) 652 { 653 struct hdpvr_device *dev = video_drvdata(file); 654 struct hdpvr_fh *fh = _fh; 655 656 fh->legacy_mode = false; 657 if (dev->options.video_input) 658 return -ENODATA; 659 *timings = dev->cur_dv_timings; 660 return 0; 661 } 662 663 static int vidioc_query_dv_timings(struct file *file, void *_fh, 664 struct v4l2_dv_timings *timings) 665 { 666 struct hdpvr_device *dev = video_drvdata(file); 667 struct hdpvr_fh *fh = _fh; 668 struct hdpvr_video_info vid_info; 669 bool interlaced; 670 int ret = 0; 671 int i; 672 673 fh->legacy_mode = false; 674 if (dev->options.video_input) 675 return -ENODATA; 676 ret = get_video_info(dev, &vid_info); 677 if (ret) 678 return ret; 679 if (!vid_info.valid) 680 return -ENOLCK; 681 interlaced = vid_info.fps <= 30; 682 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 683 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 684 unsigned hsize; 685 unsigned vsize; 686 unsigned fps; 687 688 hsize = V4L2_DV_BT_FRAME_WIDTH(bt); 689 vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); 690 fps = (unsigned)bt->pixelclock / (hsize * vsize); 691 if (bt->width != vid_info.width || 692 bt->height != vid_info.height || 693 bt->interlaced != interlaced || 694 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 695 continue; 696 *timings = hdpvr_dv_timings[i]; 697 break; 698 } 699 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 700 ret = -ERANGE; 701 702 return ret; 703 } 704 705 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 706 struct v4l2_enum_dv_timings *timings) 707 { 708 struct hdpvr_device *dev = video_drvdata(file); 709 struct hdpvr_fh *fh = _fh; 710 711 fh->legacy_mode = false; 712 memset(timings->reserved, 0, sizeof(timings->reserved)); 713 if (dev->options.video_input) 714 return -ENODATA; 715 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 716 return -EINVAL; 717 timings->timings = hdpvr_dv_timings[timings->index]; 718 return 0; 719 } 720 721 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 722 struct v4l2_dv_timings_cap *cap) 723 { 724 struct hdpvr_device *dev = video_drvdata(file); 725 struct hdpvr_fh *fh = _fh; 726 727 fh->legacy_mode = false; 728 if (dev->options.video_input) 729 return -ENODATA; 730 cap->type = V4L2_DV_BT_656_1120; 731 cap->bt.min_width = 720; 732 cap->bt.max_width = 1920; 733 cap->bt.min_height = 480; 734 cap->bt.max_height = 1080; 735 cap->bt.min_pixelclock = 27000000; 736 cap->bt.max_pixelclock = 74250000; 737 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 738 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 739 return 0; 740 } 741 742 static const char *iname[] = { 743 [HDPVR_COMPONENT] = "Component", 744 [HDPVR_SVIDEO] = "S-Video", 745 [HDPVR_COMPOSITE] = "Composite", 746 }; 747 748 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 749 { 750 unsigned int n; 751 752 n = i->index; 753 if (n >= HDPVR_VIDEO_INPUTS) 754 return -EINVAL; 755 756 i->type = V4L2_INPUT_TYPE_CAMERA; 757 758 strncpy(i->name, iname[n], sizeof(i->name) - 1); 759 i->name[sizeof(i->name) - 1] = '\0'; 760 761 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 762 763 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 764 i->std = n ? V4L2_STD_ALL : 0; 765 766 return 0; 767 } 768 769 static int vidioc_s_input(struct file *file, void *_fh, 770 unsigned int index) 771 { 772 struct hdpvr_device *dev = video_drvdata(file); 773 int retval; 774 775 if (index >= HDPVR_VIDEO_INPUTS) 776 return -EINVAL; 777 778 if (dev->status != STATUS_IDLE) 779 return -EBUSY; 780 781 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 782 if (!retval) { 783 dev->options.video_input = index; 784 /* 785 * Unfortunately gstreamer calls ENUMSTD and bails out if it 786 * won't find any formats, even though component input is 787 * selected. This means that we have to leave tvnorms at 788 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 789 * tvnorms is set at the device node level and not at the 790 * filehandle level. 791 * 792 * Comment this out for now, but if the legacy mode can be 793 * removed in the future, then this code should be enabled 794 * again. 795 dev->video_dev.tvnorms = 796 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 797 */ 798 } 799 800 return retval; 801 } 802 803 static int vidioc_g_input(struct file *file, void *private_data, 804 unsigned int *index) 805 { 806 struct hdpvr_device *dev = video_drvdata(file); 807 808 *index = dev->options.video_input; 809 return 0; 810 } 811 812 813 static const char *audio_iname[] = { 814 [HDPVR_RCA_FRONT] = "RCA front", 815 [HDPVR_RCA_BACK] = "RCA back", 816 [HDPVR_SPDIF] = "SPDIF", 817 }; 818 819 static int vidioc_enumaudio(struct file *file, void *priv, 820 struct v4l2_audio *audio) 821 { 822 unsigned int n; 823 824 n = audio->index; 825 if (n >= HDPVR_AUDIO_INPUTS) 826 return -EINVAL; 827 828 audio->capability = V4L2_AUDCAP_STEREO; 829 830 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1); 831 audio->name[sizeof(audio->name) - 1] = '\0'; 832 833 return 0; 834 } 835 836 static int vidioc_s_audio(struct file *file, void *private_data, 837 const struct v4l2_audio *audio) 838 { 839 struct hdpvr_device *dev = video_drvdata(file); 840 int retval; 841 842 if (audio->index >= HDPVR_AUDIO_INPUTS) 843 return -EINVAL; 844 845 if (dev->status != STATUS_IDLE) 846 return -EBUSY; 847 848 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 849 if (!retval) 850 dev->options.audio_input = audio->index; 851 852 return retval; 853 } 854 855 static int vidioc_g_audio(struct file *file, void *private_data, 856 struct v4l2_audio *audio) 857 { 858 struct hdpvr_device *dev = video_drvdata(file); 859 860 audio->index = dev->options.audio_input; 861 audio->capability = V4L2_AUDCAP_STEREO; 862 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 863 audio->name[sizeof(audio->name) - 1] = '\0'; 864 return 0; 865 } 866 867 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 868 { 869 struct hdpvr_device *dev = 870 container_of(ctrl->handler, struct hdpvr_device, hdl); 871 872 switch (ctrl->id) { 873 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 874 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 875 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 876 dev->video_bitrate_peak->val = 877 dev->video_bitrate->val + 100000; 878 break; 879 } 880 return 0; 881 } 882 883 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 884 { 885 struct hdpvr_device *dev = 886 container_of(ctrl->handler, struct hdpvr_device, hdl); 887 struct hdpvr_options *opt = &dev->options; 888 int ret = -EINVAL; 889 890 switch (ctrl->id) { 891 case V4L2_CID_BRIGHTNESS: 892 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 893 if (ret) 894 break; 895 dev->options.brightness = ctrl->val; 896 return 0; 897 case V4L2_CID_CONTRAST: 898 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 899 if (ret) 900 break; 901 dev->options.contrast = ctrl->val; 902 return 0; 903 case V4L2_CID_SATURATION: 904 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 905 if (ret) 906 break; 907 dev->options.saturation = ctrl->val; 908 return 0; 909 case V4L2_CID_HUE: 910 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 911 if (ret) 912 break; 913 dev->options.hue = ctrl->val; 914 return 0; 915 case V4L2_CID_SHARPNESS: 916 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 917 if (ret) 918 break; 919 dev->options.sharpness = ctrl->val; 920 return 0; 921 case V4L2_CID_MPEG_AUDIO_ENCODING: 922 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 923 opt->audio_codec = ctrl->val; 924 return hdpvr_set_audio(dev, opt->audio_input + 1, 925 opt->audio_codec); 926 } 927 return 0; 928 case V4L2_CID_MPEG_VIDEO_ENCODING: 929 return 0; 930 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 931 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 932 /* opt->gop_mode |= 0x2; */ 933 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 934 /* opt->gop_mode); */ 935 /* } */ 936 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 937 /* opt->gop_mode &= ~0x2; */ 938 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 939 /* opt->gop_mode); */ 940 /* } */ 941 /* break; */ 942 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 943 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 944 uint bitrate = dev->video_bitrate->val / 100000; 945 946 if (ctrl->is_new) { 947 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 948 opt->bitrate_mode = HDPVR_CONSTANT; 949 else 950 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 951 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 952 opt->bitrate_mode); 953 v4l2_ctrl_activate(dev->video_bitrate_peak, 954 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 955 } 956 957 if (dev->video_bitrate_peak->is_new || 958 dev->video_bitrate->is_new) { 959 opt->bitrate = bitrate; 960 opt->peak_bitrate = peak_bitrate; 961 hdpvr_set_bitrate(dev); 962 } 963 return 0; 964 } 965 case V4L2_CID_MPEG_STREAM_TYPE: 966 return 0; 967 default: 968 break; 969 } 970 return ret; 971 } 972 973 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 974 struct v4l2_fmtdesc *f) 975 { 976 if (f->index != 0) 977 return -EINVAL; 978 979 f->flags = V4L2_FMT_FLAG_COMPRESSED; 980 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32); 981 f->pixelformat = V4L2_PIX_FMT_MPEG; 982 983 return 0; 984 } 985 986 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 987 struct v4l2_format *f) 988 { 989 struct hdpvr_device *dev = video_drvdata(file); 990 struct hdpvr_fh *fh = _fh; 991 int ret; 992 993 /* 994 * The original driver would always returns the current detected 995 * resolution as the format (and EFAULT if it couldn't be detected). 996 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 997 * better way of doing this, but to stay compatible with existing 998 * applications we assume legacy mode every time an application opens 999 * the device. Only if one of the new DV_TIMINGS ioctls is called 1000 * will the filehandle go into 'normal' mode where g_fmt returns the 1001 * last set format. 1002 */ 1003 if (fh->legacy_mode) { 1004 struct hdpvr_video_info vid_info; 1005 1006 ret = get_video_info(dev, &vid_info); 1007 if (ret < 0) 1008 return ret; 1009 if (!vid_info.valid) 1010 return -EFAULT; 1011 f->fmt.pix.width = vid_info.width; 1012 f->fmt.pix.height = vid_info.height; 1013 } else { 1014 f->fmt.pix.width = dev->width; 1015 f->fmt.pix.height = dev->height; 1016 } 1017 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1018 f->fmt.pix.sizeimage = dev->bulk_in_size; 1019 f->fmt.pix.bytesperline = 0; 1020 if (f->fmt.pix.width == 720) { 1021 /* SDTV formats */ 1022 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1023 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1024 } else { 1025 /* HDTV formats */ 1026 f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709; 1027 f->fmt.pix.field = V4L2_FIELD_NONE; 1028 } 1029 return 0; 1030 } 1031 1032 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1033 struct v4l2_encoder_cmd *a) 1034 { 1035 struct hdpvr_device *dev = video_drvdata(filp); 1036 int res = 0; 1037 1038 mutex_lock(&dev->io_mutex); 1039 a->flags = 0; 1040 1041 switch (a->cmd) { 1042 case V4L2_ENC_CMD_START: 1043 if (dev->owner && filp->private_data != dev->owner) { 1044 res = -EBUSY; 1045 break; 1046 } 1047 if (dev->status == STATUS_STREAMING) 1048 break; 1049 res = hdpvr_start_streaming(dev); 1050 if (!res) 1051 dev->owner = filp->private_data; 1052 else 1053 dev->status = STATUS_IDLE; 1054 break; 1055 case V4L2_ENC_CMD_STOP: 1056 if (dev->owner && filp->private_data != dev->owner) { 1057 res = -EBUSY; 1058 break; 1059 } 1060 if (dev->status == STATUS_IDLE) 1061 break; 1062 res = hdpvr_stop_streaming(dev); 1063 if (!res) 1064 dev->owner = NULL; 1065 break; 1066 default: 1067 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1068 "Unsupported encoder cmd %d\n", a->cmd); 1069 res = -EINVAL; 1070 break; 1071 } 1072 1073 mutex_unlock(&dev->io_mutex); 1074 return res; 1075 } 1076 1077 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1078 struct v4l2_encoder_cmd *a) 1079 { 1080 a->flags = 0; 1081 switch (a->cmd) { 1082 case V4L2_ENC_CMD_START: 1083 case V4L2_ENC_CMD_STOP: 1084 return 0; 1085 default: 1086 return -EINVAL; 1087 } 1088 } 1089 1090 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1091 .vidioc_querycap = vidioc_querycap, 1092 .vidioc_s_std = vidioc_s_std, 1093 .vidioc_g_std = vidioc_g_std, 1094 .vidioc_querystd = vidioc_querystd, 1095 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1096 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1097 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1098 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1099 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1100 .vidioc_enum_input = vidioc_enum_input, 1101 .vidioc_g_input = vidioc_g_input, 1102 .vidioc_s_input = vidioc_s_input, 1103 .vidioc_enumaudio = vidioc_enumaudio, 1104 .vidioc_g_audio = vidioc_g_audio, 1105 .vidioc_s_audio = vidioc_s_audio, 1106 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1107 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1108 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1109 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1110 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1111 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1112 .vidioc_log_status = v4l2_ctrl_log_status, 1113 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1114 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1115 }; 1116 1117 static void hdpvr_device_release(struct video_device *vdev) 1118 { 1119 struct hdpvr_device *dev = video_get_drvdata(vdev); 1120 1121 hdpvr_delete(dev); 1122 mutex_lock(&dev->io_mutex); 1123 flush_work(&dev->worker); 1124 mutex_unlock(&dev->io_mutex); 1125 1126 v4l2_device_unregister(&dev->v4l2_dev); 1127 v4l2_ctrl_handler_free(&dev->hdl); 1128 1129 /* deregister I2C adapter */ 1130 #if IS_ENABLED(CONFIG_I2C) 1131 mutex_lock(&dev->i2c_mutex); 1132 i2c_del_adapter(&dev->i2c_adapter); 1133 mutex_unlock(&dev->i2c_mutex); 1134 #endif /* CONFIG_I2C */ 1135 1136 kfree(dev->usbc_buf); 1137 kfree(dev); 1138 } 1139 1140 static const struct video_device hdpvr_video_template = { 1141 .fops = &hdpvr_fops, 1142 .release = hdpvr_device_release, 1143 .ioctl_ops = &hdpvr_ioctl_ops, 1144 .tvnorms = V4L2_STD_ALL, 1145 }; 1146 1147 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1148 .try_ctrl = hdpvr_try_ctrl, 1149 .s_ctrl = hdpvr_s_ctrl, 1150 }; 1151 1152 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1153 int devnum) 1154 { 1155 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1156 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1157 int res; 1158 1159 dev->cur_std = V4L2_STD_525_60; 1160 dev->width = 720; 1161 dev->height = 480; 1162 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1163 v4l2_ctrl_handler_init(hdl, 11); 1164 if (dev->fw_ver > 0x15) { 1165 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1166 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1167 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1168 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1169 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1170 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1171 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1172 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1173 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1174 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1175 } else { 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1179 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1181 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1182 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1183 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1184 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1185 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1186 } 1187 1188 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1189 V4L2_CID_MPEG_STREAM_TYPE, 1190 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1191 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1192 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1193 V4L2_CID_MPEG_AUDIO_ENCODING, 1194 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1195 0x7, ac3 ? dev->options.audio_codec : V4L2_MPEG_AUDIO_ENCODING_AAC); 1196 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1197 V4L2_CID_MPEG_VIDEO_ENCODING, 1198 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1199 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1200 1201 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1202 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1203 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1204 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1205 1206 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1207 V4L2_CID_MPEG_VIDEO_BITRATE, 1208 1000000, 13500000, 100000, 6500000); 1209 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1210 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1211 1100000, 20200000, 100000, 9000000); 1212 dev->v4l2_dev.ctrl_handler = hdl; 1213 if (hdl->error) { 1214 res = hdl->error; 1215 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1216 goto error; 1217 } 1218 v4l2_ctrl_cluster(3, &dev->video_mode); 1219 res = v4l2_ctrl_handler_setup(hdl); 1220 if (res < 0) { 1221 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1222 goto error; 1223 } 1224 1225 /* setup and register video device */ 1226 dev->video_dev = hdpvr_video_template; 1227 strcpy(dev->video_dev.name, "Hauppauge HD PVR"); 1228 dev->video_dev.v4l2_dev = &dev->v4l2_dev; 1229 video_set_drvdata(&dev->video_dev, dev); 1230 1231 res = video_register_device(&dev->video_dev, VFL_TYPE_GRABBER, devnum); 1232 if (res < 0) { 1233 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1234 goto error; 1235 } 1236 1237 return 0; 1238 error: 1239 v4l2_ctrl_handler_free(hdl); 1240 return res; 1241 } 1242