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-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 /* bufffer 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 v4l2_err(&dev->v4l2_dev, "cannot allocate urb\n"); 159 goto exit_urb; 160 } 161 buf->urb = urb; 162 163 mem = usb_alloc_coherent(dev->udev, dev->bulk_in_size, GFP_KERNEL, 164 &urb->transfer_dma); 165 if (!mem) { 166 v4l2_err(&dev->v4l2_dev, 167 "cannot allocate usb transfer buffer\n"); 168 goto exit_urb_buffer; 169 } 170 171 usb_fill_bulk_urb(buf->urb, dev->udev, 172 usb_rcvbulkpipe(dev->udev, 173 dev->bulk_in_endpointAddr), 174 mem, dev->bulk_in_size, 175 hdpvr_read_bulk_callback, buf); 176 177 buf->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; 178 buf->status = BUFSTAT_AVAILABLE; 179 list_add_tail(&buf->buff_list, &dev->free_buff_list); 180 } 181 return 0; 182 exit_urb_buffer: 183 usb_free_urb(urb); 184 exit_urb: 185 kfree(buf); 186 exit: 187 hdpvr_free_buffers(dev); 188 return retval; 189 } 190 191 static int hdpvr_submit_buffers(struct hdpvr_device *dev) 192 { 193 struct hdpvr_buffer *buf; 194 struct urb *urb; 195 int ret = 0, err_count = 0; 196 197 mutex_lock(&dev->io_mutex); 198 199 while (dev->status == STATUS_STREAMING && 200 !list_empty(&dev->free_buff_list)) { 201 202 buf = list_entry(dev->free_buff_list.next, struct hdpvr_buffer, 203 buff_list); 204 if (buf->status != BUFSTAT_AVAILABLE) { 205 v4l2_err(&dev->v4l2_dev, 206 "buffer not marked as available\n"); 207 ret = -EFAULT; 208 goto err; 209 } 210 211 urb = buf->urb; 212 urb->status = 0; 213 urb->actual_length = 0; 214 ret = usb_submit_urb(urb, GFP_KERNEL); 215 if (ret) { 216 v4l2_err(&dev->v4l2_dev, 217 "usb_submit_urb in %s returned %d\n", 218 __func__, ret); 219 if (++err_count > 2) 220 break; 221 continue; 222 } 223 buf->status = BUFSTAT_INPROGRESS; 224 list_move_tail(&buf->buff_list, &dev->rec_buff_list); 225 } 226 err: 227 print_buffer_status(); 228 mutex_unlock(&dev->io_mutex); 229 return ret; 230 } 231 232 static struct hdpvr_buffer *hdpvr_get_next_buffer(struct hdpvr_device *dev) 233 { 234 struct hdpvr_buffer *buf; 235 236 mutex_lock(&dev->io_mutex); 237 238 if (list_empty(&dev->rec_buff_list)) { 239 mutex_unlock(&dev->io_mutex); 240 return NULL; 241 } 242 243 buf = list_entry(dev->rec_buff_list.next, struct hdpvr_buffer, 244 buff_list); 245 mutex_unlock(&dev->io_mutex); 246 247 return buf; 248 } 249 250 static void hdpvr_transmit_buffers(struct work_struct *work) 251 { 252 struct hdpvr_device *dev = container_of(work, struct hdpvr_device, 253 worker); 254 255 while (dev->status == STATUS_STREAMING) { 256 257 if (hdpvr_submit_buffers(dev)) { 258 v4l2_err(&dev->v4l2_dev, "couldn't submit buffers\n"); 259 goto error; 260 } 261 if (wait_event_interruptible(dev->wait_buffer, 262 !list_empty(&dev->free_buff_list) || 263 dev->status != STATUS_STREAMING)) 264 goto error; 265 } 266 267 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 268 "transmit worker exited\n"); 269 return; 270 error: 271 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 272 "transmit buffers errored\n"); 273 dev->status = STATUS_ERROR; 274 } 275 276 /* function expects dev->io_mutex to be hold by caller */ 277 static int hdpvr_start_streaming(struct hdpvr_device *dev) 278 { 279 int ret; 280 struct hdpvr_video_info vidinf; 281 282 if (dev->status == STATUS_STREAMING) 283 return 0; 284 if (dev->status != STATUS_IDLE) 285 return -EAGAIN; 286 287 ret = get_video_info(dev, &vidinf); 288 if (ret < 0) 289 return ret; 290 291 if (!vidinf.valid) { 292 msleep(250); 293 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 294 "no video signal at input %d\n", dev->options.video_input); 295 return -EAGAIN; 296 } 297 298 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 299 "video signal: %dx%d@%dhz\n", vidinf.width, 300 vidinf.height, vidinf.fps); 301 302 /* start streaming 2 request */ 303 ret = usb_control_msg(dev->udev, 304 usb_sndctrlpipe(dev->udev, 0), 305 0xb8, 0x38, 0x1, 0, NULL, 0, 8000); 306 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 307 "encoder start control request returned %d\n", ret); 308 if (ret < 0) 309 return ret; 310 311 ret = hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); 312 if (ret) 313 return ret; 314 315 dev->status = STATUS_STREAMING; 316 317 INIT_WORK(&dev->worker, hdpvr_transmit_buffers); 318 queue_work(dev->workqueue, &dev->worker); 319 320 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 321 "streaming started\n"); 322 323 return 0; 324 } 325 326 327 /* function expects dev->io_mutex to be hold by caller */ 328 static int hdpvr_stop_streaming(struct hdpvr_device *dev) 329 { 330 int actual_length; 331 uint c = 0; 332 u8 *buf; 333 334 if (dev->status == STATUS_IDLE) 335 return 0; 336 else if (dev->status != STATUS_STREAMING) 337 return -EAGAIN; 338 339 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); 340 if (!buf) 341 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer " 342 "for emptying the internal device buffer. " 343 "Next capture start will be slow\n"); 344 345 dev->status = STATUS_SHUTTING_DOWN; 346 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 347 mutex_unlock(&dev->io_mutex); 348 349 wake_up_interruptible(&dev->wait_buffer); 350 msleep(50); 351 352 flush_workqueue(dev->workqueue); 353 354 mutex_lock(&dev->io_mutex); 355 /* kill the still outstanding urbs */ 356 hdpvr_cancel_queue(dev); 357 358 /* emptying the device buffer beforeshutting it down */ 359 while (buf && ++c < 500 && 360 !usb_bulk_msg(dev->udev, 361 usb_rcvbulkpipe(dev->udev, 362 dev->bulk_in_endpointAddr), 363 buf, dev->bulk_in_size, &actual_length, 364 BULK_URB_TIMEOUT)) { 365 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 366 "%2d: got %d bytes\n", c, actual_length); 367 } 368 kfree(buf); 369 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 370 "used %d urbs to empty device buffers\n", c-1); 371 msleep(10); 372 373 dev->status = STATUS_IDLE; 374 375 return 0; 376 } 377 378 379 /*=======================================================================*/ 380 /* 381 * video 4 linux 2 file operations 382 */ 383 384 static int hdpvr_open(struct file *file) 385 { 386 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 387 388 if (fh == NULL) 389 return -ENOMEM; 390 fh->legacy_mode = true; 391 v4l2_fh_init(&fh->fh, video_devdata(file)); 392 v4l2_fh_add(&fh->fh); 393 file->private_data = fh; 394 return 0; 395 } 396 397 static int hdpvr_release(struct file *file) 398 { 399 struct hdpvr_device *dev = video_drvdata(file); 400 401 mutex_lock(&dev->io_mutex); 402 if (file->private_data == dev->owner) { 403 hdpvr_stop_streaming(dev); 404 dev->owner = NULL; 405 } 406 mutex_unlock(&dev->io_mutex); 407 408 return v4l2_fh_release(file); 409 } 410 411 /* 412 * hdpvr_v4l2_read() 413 * will allocate buffers when called for the first time 414 */ 415 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 416 loff_t *pos) 417 { 418 struct hdpvr_device *dev = video_drvdata(file); 419 struct hdpvr_buffer *buf = NULL; 420 struct urb *urb; 421 unsigned int ret = 0; 422 int rem, cnt; 423 424 if (*pos) 425 return -ESPIPE; 426 427 mutex_lock(&dev->io_mutex); 428 if (dev->status == STATUS_IDLE) { 429 if (hdpvr_start_streaming(dev)) { 430 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 431 "start_streaming failed\n"); 432 ret = -EIO; 433 msleep(200); 434 dev->status = STATUS_IDLE; 435 mutex_unlock(&dev->io_mutex); 436 goto err; 437 } 438 dev->owner = file->private_data; 439 print_buffer_status(); 440 } 441 mutex_unlock(&dev->io_mutex); 442 443 /* wait for the first buffer */ 444 if (!(file->f_flags & O_NONBLOCK)) { 445 if (wait_event_interruptible(dev->wait_data, 446 hdpvr_get_next_buffer(dev))) 447 return -ERESTARTSYS; 448 } 449 450 buf = hdpvr_get_next_buffer(dev); 451 452 while (count > 0 && buf) { 453 454 if (buf->status != BUFSTAT_READY && 455 dev->status != STATUS_DISCONNECTED) { 456 /* return nonblocking */ 457 if (file->f_flags & O_NONBLOCK) { 458 if (!ret) 459 ret = -EAGAIN; 460 goto err; 461 } 462 463 if (wait_event_interruptible(dev->wait_data, 464 buf->status == BUFSTAT_READY)) { 465 ret = -ERESTARTSYS; 466 goto err; 467 } 468 } 469 470 if (buf->status != BUFSTAT_READY) 471 break; 472 473 /* set remaining bytes to copy */ 474 urb = buf->urb; 475 rem = urb->actual_length - buf->pos; 476 cnt = rem > count ? count : rem; 477 478 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 479 cnt)) { 480 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 481 if (!ret) 482 ret = -EFAULT; 483 goto err; 484 } 485 486 buf->pos += cnt; 487 count -= cnt; 488 buffer += cnt; 489 ret += cnt; 490 491 /* finished, take next buffer */ 492 if (buf->pos == urb->actual_length) { 493 mutex_lock(&dev->io_mutex); 494 buf->pos = 0; 495 buf->status = BUFSTAT_AVAILABLE; 496 497 list_move_tail(&buf->buff_list, &dev->free_buff_list); 498 499 print_buffer_status(); 500 501 mutex_unlock(&dev->io_mutex); 502 503 wake_up_interruptible(&dev->wait_buffer); 504 505 buf = hdpvr_get_next_buffer(dev); 506 } 507 } 508 err: 509 if (!ret && !buf) 510 ret = -EAGAIN; 511 return ret; 512 } 513 514 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait) 515 { 516 unsigned long req_events = poll_requested_events(wait); 517 struct hdpvr_buffer *buf = NULL; 518 struct hdpvr_device *dev = video_drvdata(filp); 519 unsigned int mask = v4l2_ctrl_poll(filp, wait); 520 521 if (!(req_events & (POLLIN | POLLRDNORM))) 522 return mask; 523 524 mutex_lock(&dev->io_mutex); 525 526 if (dev->status == STATUS_IDLE) { 527 if (hdpvr_start_streaming(dev)) { 528 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 529 "start_streaming failed\n"); 530 dev->status = STATUS_IDLE; 531 } else { 532 dev->owner = filp->private_data; 533 } 534 535 print_buffer_status(); 536 } 537 mutex_unlock(&dev->io_mutex); 538 539 buf = hdpvr_get_next_buffer(dev); 540 /* only wait if no data is available */ 541 if (!buf || buf->status != BUFSTAT_READY) { 542 poll_wait(filp, &dev->wait_data, wait); 543 buf = hdpvr_get_next_buffer(dev); 544 } 545 if (buf && buf->status == BUFSTAT_READY) 546 mask |= POLLIN | POLLRDNORM; 547 548 return mask; 549 } 550 551 552 static const struct v4l2_file_operations hdpvr_fops = { 553 .owner = THIS_MODULE, 554 .open = hdpvr_open, 555 .release = hdpvr_release, 556 .read = hdpvr_read, 557 .poll = hdpvr_poll, 558 .unlocked_ioctl = video_ioctl2, 559 }; 560 561 /*=======================================================================*/ 562 /* 563 * V4L2 ioctl handling 564 */ 565 566 static int vidioc_querycap(struct file *file, void *priv, 567 struct v4l2_capability *cap) 568 { 569 struct hdpvr_device *dev = video_drvdata(file); 570 571 strcpy(cap->driver, "hdpvr"); 572 strcpy(cap->card, "Hauppauge HD PVR"); 573 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 574 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 575 V4L2_CAP_READWRITE; 576 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 577 return 0; 578 } 579 580 static int vidioc_s_std(struct file *file, void *_fh, 581 v4l2_std_id std) 582 { 583 struct hdpvr_device *dev = video_drvdata(file); 584 struct hdpvr_fh *fh = _fh; 585 u8 std_type = 1; 586 587 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 588 return -ENODATA; 589 if (dev->status != STATUS_IDLE) 590 return -EBUSY; 591 if (std & V4L2_STD_525_60) 592 std_type = 0; 593 dev->cur_std = std; 594 dev->width = 720; 595 dev->height = std_type ? 576 : 480; 596 597 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 598 } 599 600 static int vidioc_g_std(struct file *file, void *_fh, 601 v4l2_std_id *std) 602 { 603 struct hdpvr_device *dev = video_drvdata(file); 604 struct hdpvr_fh *fh = _fh; 605 606 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 607 return -ENODATA; 608 *std = dev->cur_std; 609 return 0; 610 } 611 612 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 613 { 614 struct hdpvr_device *dev = video_drvdata(file); 615 struct hdpvr_video_info vid_info; 616 struct hdpvr_fh *fh = _fh; 617 int ret; 618 619 *a = V4L2_STD_UNKNOWN; 620 if (dev->options.video_input == HDPVR_COMPONENT) 621 return fh->legacy_mode ? 0 : -ENODATA; 622 ret = get_video_info(dev, &vid_info); 623 if (vid_info.valid && vid_info.width == 720 && 624 (vid_info.height == 480 || vid_info.height == 576)) { 625 *a = (vid_info.height == 480) ? 626 V4L2_STD_525_60 : V4L2_STD_625_50; 627 } 628 return ret; 629 } 630 631 static int vidioc_s_dv_timings(struct file *file, void *_fh, 632 struct v4l2_dv_timings *timings) 633 { 634 struct hdpvr_device *dev = video_drvdata(file); 635 struct hdpvr_fh *fh = _fh; 636 int i; 637 638 fh->legacy_mode = false; 639 if (dev->options.video_input) 640 return -ENODATA; 641 if (dev->status != STATUS_IDLE) 642 return -EBUSY; 643 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) 644 if (v4l_match_dv_timings(timings, hdpvr_dv_timings + i, 0)) 645 break; 646 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 647 return -EINVAL; 648 dev->cur_dv_timings = hdpvr_dv_timings[i]; 649 dev->width = hdpvr_dv_timings[i].bt.width; 650 dev->height = hdpvr_dv_timings[i].bt.height; 651 return 0; 652 } 653 654 static int vidioc_g_dv_timings(struct file *file, void *_fh, 655 struct v4l2_dv_timings *timings) 656 { 657 struct hdpvr_device *dev = video_drvdata(file); 658 struct hdpvr_fh *fh = _fh; 659 660 fh->legacy_mode = false; 661 if (dev->options.video_input) 662 return -ENODATA; 663 *timings = dev->cur_dv_timings; 664 return 0; 665 } 666 667 static int vidioc_query_dv_timings(struct file *file, void *_fh, 668 struct v4l2_dv_timings *timings) 669 { 670 struct hdpvr_device *dev = video_drvdata(file); 671 struct hdpvr_fh *fh = _fh; 672 struct hdpvr_video_info vid_info; 673 bool interlaced; 674 int ret = 0; 675 int i; 676 677 fh->legacy_mode = false; 678 if (dev->options.video_input) 679 return -ENODATA; 680 ret = get_video_info(dev, &vid_info); 681 if (ret) 682 return ret; 683 if (!vid_info.valid) 684 return -ENOLCK; 685 interlaced = vid_info.fps <= 30; 686 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 687 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 688 unsigned hsize; 689 unsigned vsize; 690 unsigned fps; 691 692 hsize = bt->hfrontporch + bt->hsync + bt->hbackporch + bt->width; 693 vsize = bt->vfrontporch + bt->vsync + bt->vbackporch + 694 bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch + 695 bt->height; 696 fps = (unsigned)bt->pixelclock / (hsize * vsize); 697 if (bt->width != vid_info.width || 698 bt->height != vid_info.height || 699 bt->interlaced != interlaced || 700 (fps != vid_info.fps && fps + 1 != vid_info.fps)) 701 continue; 702 *timings = hdpvr_dv_timings[i]; 703 break; 704 } 705 if (i == ARRAY_SIZE(hdpvr_dv_timings)) 706 ret = -ERANGE; 707 708 return ret; 709 } 710 711 static int vidioc_enum_dv_timings(struct file *file, void *_fh, 712 struct v4l2_enum_dv_timings *timings) 713 { 714 struct hdpvr_device *dev = video_drvdata(file); 715 struct hdpvr_fh *fh = _fh; 716 717 fh->legacy_mode = false; 718 memset(timings->reserved, 0, sizeof(timings->reserved)); 719 if (dev->options.video_input) 720 return -ENODATA; 721 if (timings->index >= ARRAY_SIZE(hdpvr_dv_timings)) 722 return -EINVAL; 723 timings->timings = hdpvr_dv_timings[timings->index]; 724 return 0; 725 } 726 727 static int vidioc_dv_timings_cap(struct file *file, void *_fh, 728 struct v4l2_dv_timings_cap *cap) 729 { 730 struct hdpvr_device *dev = video_drvdata(file); 731 struct hdpvr_fh *fh = _fh; 732 733 fh->legacy_mode = false; 734 if (dev->options.video_input) 735 return -ENODATA; 736 cap->type = V4L2_DV_BT_656_1120; 737 cap->bt.min_width = 720; 738 cap->bt.max_width = 1920; 739 cap->bt.min_height = 480; 740 cap->bt.max_height = 1080; 741 cap->bt.min_pixelclock = 27000000; 742 cap->bt.max_pixelclock = 74250000; 743 cap->bt.standards = V4L2_DV_BT_STD_CEA861; 744 cap->bt.capabilities = V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE; 745 return 0; 746 } 747 748 static const char *iname[] = { 749 [HDPVR_COMPONENT] = "Component", 750 [HDPVR_SVIDEO] = "S-Video", 751 [HDPVR_COMPOSITE] = "Composite", 752 }; 753 754 static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i) 755 { 756 unsigned int n; 757 758 n = i->index; 759 if (n >= HDPVR_VIDEO_INPUTS) 760 return -EINVAL; 761 762 i->type = V4L2_INPUT_TYPE_CAMERA; 763 764 strncpy(i->name, iname[n], sizeof(i->name) - 1); 765 i->name[sizeof(i->name) - 1] = '\0'; 766 767 i->audioset = 1<<HDPVR_RCA_FRONT | 1<<HDPVR_RCA_BACK | 1<<HDPVR_SPDIF; 768 769 i->capabilities = n ? V4L2_IN_CAP_STD : V4L2_IN_CAP_DV_TIMINGS; 770 i->std = n ? V4L2_STD_ALL : 0; 771 772 return 0; 773 } 774 775 static int vidioc_s_input(struct file *file, void *_fh, 776 unsigned int index) 777 { 778 struct hdpvr_device *dev = video_drvdata(file); 779 int retval; 780 781 if (index >= HDPVR_VIDEO_INPUTS) 782 return -EINVAL; 783 784 if (dev->status != STATUS_IDLE) 785 return -EBUSY; 786 787 retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1); 788 if (!retval) { 789 dev->options.video_input = index; 790 /* 791 * Unfortunately gstreamer calls ENUMSTD and bails out if it 792 * won't find any formats, even though component input is 793 * selected. This means that we have to leave tvnorms at 794 * V4L2_STD_ALL. We cannot use the 'legacy' trick since 795 * tvnorms is set at the device node level and not at the 796 * filehandle level. 797 * 798 * Comment this out for now, but if the legacy mode can be 799 * removed in the future, then this code should be enabled 800 * again. 801 dev->video_dev->tvnorms = 802 (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0; 803 */ 804 } 805 806 return retval; 807 } 808 809 static int vidioc_g_input(struct file *file, void *private_data, 810 unsigned int *index) 811 { 812 struct hdpvr_device *dev = video_drvdata(file); 813 814 *index = dev->options.video_input; 815 return 0; 816 } 817 818 819 static const char *audio_iname[] = { 820 [HDPVR_RCA_FRONT] = "RCA front", 821 [HDPVR_RCA_BACK] = "RCA back", 822 [HDPVR_SPDIF] = "SPDIF", 823 }; 824 825 static int vidioc_enumaudio(struct file *file, void *priv, 826 struct v4l2_audio *audio) 827 { 828 unsigned int n; 829 830 n = audio->index; 831 if (n >= HDPVR_AUDIO_INPUTS) 832 return -EINVAL; 833 834 audio->capability = V4L2_AUDCAP_STEREO; 835 836 strncpy(audio->name, audio_iname[n], sizeof(audio->name) - 1); 837 audio->name[sizeof(audio->name) - 1] = '\0'; 838 839 return 0; 840 } 841 842 static int vidioc_s_audio(struct file *file, void *private_data, 843 const struct v4l2_audio *audio) 844 { 845 struct hdpvr_device *dev = video_drvdata(file); 846 int retval; 847 848 if (audio->index >= HDPVR_AUDIO_INPUTS) 849 return -EINVAL; 850 851 if (dev->status != STATUS_IDLE) 852 return -EBUSY; 853 854 retval = hdpvr_set_audio(dev, audio->index+1, dev->options.audio_codec); 855 if (!retval) 856 dev->options.audio_input = audio->index; 857 858 return retval; 859 } 860 861 static int vidioc_g_audio(struct file *file, void *private_data, 862 struct v4l2_audio *audio) 863 { 864 struct hdpvr_device *dev = video_drvdata(file); 865 866 audio->index = dev->options.audio_input; 867 audio->capability = V4L2_AUDCAP_STEREO; 868 strncpy(audio->name, audio_iname[audio->index], sizeof(audio->name)); 869 audio->name[sizeof(audio->name) - 1] = '\0'; 870 return 0; 871 } 872 873 static int hdpvr_try_ctrl(struct v4l2_ctrl *ctrl) 874 { 875 struct hdpvr_device *dev = 876 container_of(ctrl->handler, struct hdpvr_device, hdl); 877 878 switch (ctrl->id) { 879 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 880 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR && 881 dev->video_bitrate->val >= dev->video_bitrate_peak->val) 882 dev->video_bitrate_peak->val = 883 dev->video_bitrate->val + 100000; 884 break; 885 } 886 return 0; 887 } 888 889 static int hdpvr_s_ctrl(struct v4l2_ctrl *ctrl) 890 { 891 struct hdpvr_device *dev = 892 container_of(ctrl->handler, struct hdpvr_device, hdl); 893 struct hdpvr_options *opt = &dev->options; 894 int ret = -EINVAL; 895 896 switch (ctrl->id) { 897 case V4L2_CID_BRIGHTNESS: 898 ret = hdpvr_config_call(dev, CTRL_BRIGHTNESS, ctrl->val); 899 if (ret) 900 break; 901 dev->options.brightness = ctrl->val; 902 return 0; 903 case V4L2_CID_CONTRAST: 904 ret = hdpvr_config_call(dev, CTRL_CONTRAST, ctrl->val); 905 if (ret) 906 break; 907 dev->options.contrast = ctrl->val; 908 return 0; 909 case V4L2_CID_SATURATION: 910 ret = hdpvr_config_call(dev, CTRL_SATURATION, ctrl->val); 911 if (ret) 912 break; 913 dev->options.saturation = ctrl->val; 914 return 0; 915 case V4L2_CID_HUE: 916 ret = hdpvr_config_call(dev, CTRL_HUE, ctrl->val); 917 if (ret) 918 break; 919 dev->options.hue = ctrl->val; 920 return 0; 921 case V4L2_CID_SHARPNESS: 922 ret = hdpvr_config_call(dev, CTRL_SHARPNESS, ctrl->val); 923 if (ret) 924 break; 925 dev->options.sharpness = ctrl->val; 926 return 0; 927 case V4L2_CID_MPEG_AUDIO_ENCODING: 928 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 929 opt->audio_codec = ctrl->val; 930 return hdpvr_set_audio(dev, opt->audio_input, 931 opt->audio_codec); 932 } 933 return 0; 934 case V4L2_CID_MPEG_VIDEO_ENCODING: 935 return 0; 936 /* case V4L2_CID_MPEG_VIDEO_B_FRAMES: */ 937 /* if (ctrl->value == 0 && !(opt->gop_mode & 0x2)) { */ 938 /* opt->gop_mode |= 0x2; */ 939 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 940 /* opt->gop_mode); */ 941 /* } */ 942 /* if (ctrl->value == 128 && opt->gop_mode & 0x2) { */ 943 /* opt->gop_mode &= ~0x2; */ 944 /* hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, */ 945 /* opt->gop_mode); */ 946 /* } */ 947 /* break; */ 948 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: { 949 uint peak_bitrate = dev->video_bitrate_peak->val / 100000; 950 uint bitrate = dev->video_bitrate->val / 100000; 951 952 if (ctrl->is_new) { 953 if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) 954 opt->bitrate_mode = HDPVR_CONSTANT; 955 else 956 opt->bitrate_mode = HDPVR_VARIABLE_AVERAGE; 957 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 958 opt->bitrate_mode); 959 v4l2_ctrl_activate(dev->video_bitrate_peak, 960 ctrl->val != V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 961 } 962 963 if (dev->video_bitrate_peak->is_new || 964 dev->video_bitrate->is_new) { 965 opt->bitrate = bitrate; 966 opt->peak_bitrate = peak_bitrate; 967 hdpvr_set_bitrate(dev); 968 } 969 return 0; 970 } 971 case V4L2_CID_MPEG_STREAM_TYPE: 972 return 0; 973 default: 974 break; 975 } 976 return ret; 977 } 978 979 static int vidioc_enum_fmt_vid_cap(struct file *file, void *private_data, 980 struct v4l2_fmtdesc *f) 981 { 982 if (f->index != 0) 983 return -EINVAL; 984 985 f->flags = V4L2_FMT_FLAG_COMPRESSED; 986 strncpy(f->description, "MPEG2-TS with AVC/AAC streams", 32); 987 f->pixelformat = V4L2_PIX_FMT_MPEG; 988 989 return 0; 990 } 991 992 static int vidioc_g_fmt_vid_cap(struct file *file, void *_fh, 993 struct v4l2_format *f) 994 { 995 struct hdpvr_device *dev = video_drvdata(file); 996 struct hdpvr_fh *fh = _fh; 997 int ret; 998 999 /* 1000 * The original driver would always returns the current detected 1001 * resolution as the format (and EFAULT if it couldn't be detected). 1002 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 1003 * better way of doing this, but to stay compatible with existing 1004 * applications we assume legacy mode every time an application opens 1005 * the device. Only if one of the new DV_TIMINGS ioctls is called 1006 * will the filehandle go into 'normal' mode where g_fmt returns the 1007 * last set format. 1008 */ 1009 if (fh->legacy_mode) { 1010 struct hdpvr_video_info vid_info; 1011 1012 ret = get_video_info(dev, &vid_info); 1013 if (ret < 0) 1014 return ret; 1015 if (!vid_info.valid) 1016 return -EFAULT; 1017 f->fmt.pix.width = vid_info.width; 1018 f->fmt.pix.height = vid_info.height; 1019 } else { 1020 f->fmt.pix.width = dev->width; 1021 f->fmt.pix.height = dev->height; 1022 } 1023 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1024 f->fmt.pix.sizeimage = dev->bulk_in_size; 1025 f->fmt.pix.bytesperline = 0; 1026 f->fmt.pix.priv = 0; 1027 if (f->fmt.pix.width == 720) { 1028 /* SDTV formats */ 1029 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1030 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1031 } else { 1032 /* HDTV formats */ 1033 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE240M; 1034 f->fmt.pix.field = V4L2_FIELD_NONE; 1035 } 1036 return 0; 1037 } 1038 1039 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1040 struct v4l2_encoder_cmd *a) 1041 { 1042 struct hdpvr_device *dev = video_drvdata(filp); 1043 int res = 0; 1044 1045 mutex_lock(&dev->io_mutex); 1046 a->flags = 0; 1047 1048 switch (a->cmd) { 1049 case V4L2_ENC_CMD_START: 1050 if (dev->owner && filp->private_data != dev->owner) { 1051 res = -EBUSY; 1052 break; 1053 } 1054 if (dev->status == STATUS_STREAMING) 1055 break; 1056 res = hdpvr_start_streaming(dev); 1057 if (!res) 1058 dev->owner = filp->private_data; 1059 else 1060 dev->status = STATUS_IDLE; 1061 break; 1062 case V4L2_ENC_CMD_STOP: 1063 if (dev->owner && filp->private_data != dev->owner) { 1064 res = -EBUSY; 1065 break; 1066 } 1067 if (dev->status == STATUS_IDLE) 1068 break; 1069 res = hdpvr_stop_streaming(dev); 1070 if (!res) 1071 dev->owner = NULL; 1072 break; 1073 default: 1074 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1075 "Unsupported encoder cmd %d\n", a->cmd); 1076 res = -EINVAL; 1077 break; 1078 } 1079 1080 mutex_unlock(&dev->io_mutex); 1081 return res; 1082 } 1083 1084 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1085 struct v4l2_encoder_cmd *a) 1086 { 1087 a->flags = 0; 1088 switch (a->cmd) { 1089 case V4L2_ENC_CMD_START: 1090 case V4L2_ENC_CMD_STOP: 1091 return 0; 1092 default: 1093 return -EINVAL; 1094 } 1095 } 1096 1097 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1098 .vidioc_querycap = vidioc_querycap, 1099 .vidioc_s_std = vidioc_s_std, 1100 .vidioc_g_std = vidioc_g_std, 1101 .vidioc_querystd = vidioc_querystd, 1102 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1103 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1104 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1105 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1106 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1107 .vidioc_enum_input = vidioc_enum_input, 1108 .vidioc_g_input = vidioc_g_input, 1109 .vidioc_s_input = vidioc_s_input, 1110 .vidioc_enumaudio = vidioc_enumaudio, 1111 .vidioc_g_audio = vidioc_g_audio, 1112 .vidioc_s_audio = vidioc_s_audio, 1113 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1114 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1115 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1116 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1117 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1118 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1119 .vidioc_log_status = v4l2_ctrl_log_status, 1120 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1121 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1122 }; 1123 1124 static void hdpvr_device_release(struct video_device *vdev) 1125 { 1126 struct hdpvr_device *dev = video_get_drvdata(vdev); 1127 1128 hdpvr_delete(dev); 1129 mutex_lock(&dev->io_mutex); 1130 destroy_workqueue(dev->workqueue); 1131 mutex_unlock(&dev->io_mutex); 1132 1133 v4l2_device_unregister(&dev->v4l2_dev); 1134 v4l2_ctrl_handler_free(&dev->hdl); 1135 1136 /* deregister I2C adapter */ 1137 #if IS_ENABLED(CONFIG_I2C) 1138 mutex_lock(&dev->i2c_mutex); 1139 i2c_del_adapter(&dev->i2c_adapter); 1140 mutex_unlock(&dev->i2c_mutex); 1141 #endif /* CONFIG_I2C */ 1142 1143 kfree(dev->usbc_buf); 1144 kfree(dev); 1145 } 1146 1147 static const struct video_device hdpvr_video_template = { 1148 .fops = &hdpvr_fops, 1149 .release = hdpvr_device_release, 1150 .ioctl_ops = &hdpvr_ioctl_ops, 1151 .tvnorms = V4L2_STD_ALL, 1152 }; 1153 1154 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1155 .try_ctrl = hdpvr_try_ctrl, 1156 .s_ctrl = hdpvr_s_ctrl, 1157 }; 1158 1159 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1160 int devnum) 1161 { 1162 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1163 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1164 int res; 1165 1166 dev->cur_std = V4L2_STD_525_60; 1167 dev->width = 720; 1168 dev->height = 480; 1169 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1170 v4l2_ctrl_handler_init(hdl, 11); 1171 if (dev->fw_ver > 0x15) { 1172 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1173 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1174 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1175 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1176 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1177 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1178 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1179 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1180 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1181 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1182 } else { 1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1184 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1185 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1186 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1187 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1189 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1190 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1191 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1192 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1193 } 1194 1195 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1196 V4L2_CID_MPEG_STREAM_TYPE, 1197 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1198 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1199 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1200 V4L2_CID_MPEG_AUDIO_ENCODING, 1201 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1202 0x7, V4L2_MPEG_AUDIO_ENCODING_AAC); 1203 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1204 V4L2_CID_MPEG_VIDEO_ENCODING, 1205 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1206 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1207 1208 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1209 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1210 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1211 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1212 1213 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1214 V4L2_CID_MPEG_VIDEO_BITRATE, 1215 1000000, 13500000, 100000, 6500000); 1216 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1217 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1218 1100000, 20200000, 100000, 9000000); 1219 dev->v4l2_dev.ctrl_handler = hdl; 1220 if (hdl->error) { 1221 res = hdl->error; 1222 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1223 goto error; 1224 } 1225 v4l2_ctrl_cluster(3, &dev->video_mode); 1226 res = v4l2_ctrl_handler_setup(hdl); 1227 if (res < 0) { 1228 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1229 goto error; 1230 } 1231 1232 /* setup and register video device */ 1233 dev->video_dev = video_device_alloc(); 1234 if (!dev->video_dev) { 1235 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n"); 1236 res = -ENOMEM; 1237 goto error; 1238 } 1239 1240 *dev->video_dev = hdpvr_video_template; 1241 strcpy(dev->video_dev->name, "Hauppauge HD PVR"); 1242 dev->video_dev->v4l2_dev = &dev->v4l2_dev; 1243 video_set_drvdata(dev->video_dev, dev); 1244 set_bit(V4L2_FL_USE_FH_PRIO, &dev->video_dev->flags); 1245 1246 res = video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum); 1247 if (res < 0) { 1248 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1249 goto error; 1250 } 1251 1252 return 0; 1253 error: 1254 v4l2_ctrl_handler_free(hdl); 1255 return res; 1256 } 1257