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 else if (dev->status != STATUS_IDLE) 285 return -EAGAIN; 286 287 vidinf = get_video_info(dev); 288 289 if (vidinf) { 290 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 291 "video signal: %dx%d@%dhz\n", vidinf->width, 292 vidinf->height, vidinf->fps); 293 kfree(vidinf); 294 295 /* start streaming 2 request */ 296 ret = usb_control_msg(dev->udev, 297 usb_sndctrlpipe(dev->udev, 0), 298 0xb8, 0x38, 0x1, 0, NULL, 0, 8000); 299 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 300 "encoder start control request returned %d\n", ret); 301 302 hdpvr_config_call(dev, CTRL_START_STREAMING_VALUE, 0x00); 303 304 dev->status = STATUS_STREAMING; 305 306 INIT_WORK(&dev->worker, hdpvr_transmit_buffers); 307 queue_work(dev->workqueue, &dev->worker); 308 309 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 310 "streaming started\n"); 311 312 return 0; 313 } 314 msleep(250); 315 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 316 "no video signal at input %d\n", dev->options.video_input); 317 return -EAGAIN; 318 } 319 320 321 /* function expects dev->io_mutex to be hold by caller */ 322 static int hdpvr_stop_streaming(struct hdpvr_device *dev) 323 { 324 int actual_length; 325 uint c = 0; 326 u8 *buf; 327 328 if (dev->status == STATUS_IDLE) 329 return 0; 330 else if (dev->status != STATUS_STREAMING) 331 return -EAGAIN; 332 333 buf = kmalloc(dev->bulk_in_size, GFP_KERNEL); 334 if (!buf) 335 v4l2_err(&dev->v4l2_dev, "failed to allocate temporary buffer " 336 "for emptying the internal device buffer. " 337 "Next capture start will be slow\n"); 338 339 dev->status = STATUS_SHUTTING_DOWN; 340 hdpvr_config_call(dev, CTRL_STOP_STREAMING_VALUE, 0x00); 341 mutex_unlock(&dev->io_mutex); 342 343 wake_up_interruptible(&dev->wait_buffer); 344 msleep(50); 345 346 flush_workqueue(dev->workqueue); 347 348 mutex_lock(&dev->io_mutex); 349 /* kill the still outstanding urbs */ 350 hdpvr_cancel_queue(dev); 351 352 /* emptying the device buffer beforeshutting it down */ 353 while (buf && ++c < 500 && 354 !usb_bulk_msg(dev->udev, 355 usb_rcvbulkpipe(dev->udev, 356 dev->bulk_in_endpointAddr), 357 buf, dev->bulk_in_size, &actual_length, 358 BULK_URB_TIMEOUT)) { 359 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 360 "%2d: got %d bytes\n", c, actual_length); 361 } 362 kfree(buf); 363 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 364 "used %d urbs to empty device buffers\n", c-1); 365 msleep(10); 366 367 dev->status = STATUS_IDLE; 368 369 return 0; 370 } 371 372 373 /*=======================================================================*/ 374 /* 375 * video 4 linux 2 file operations 376 */ 377 378 static int hdpvr_open(struct file *file) 379 { 380 struct hdpvr_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL); 381 382 if (fh == NULL) 383 return -ENOMEM; 384 fh->legacy_mode = true; 385 v4l2_fh_init(&fh->fh, video_devdata(file)); 386 v4l2_fh_add(&fh->fh); 387 file->private_data = fh; 388 return 0; 389 } 390 391 static int hdpvr_release(struct file *file) 392 { 393 struct hdpvr_device *dev = video_drvdata(file); 394 395 mutex_lock(&dev->io_mutex); 396 if (file->private_data == dev->owner) { 397 hdpvr_stop_streaming(dev); 398 dev->owner = NULL; 399 } 400 mutex_unlock(&dev->io_mutex); 401 402 return v4l2_fh_release(file); 403 } 404 405 /* 406 * hdpvr_v4l2_read() 407 * will allocate buffers when called for the first time 408 */ 409 static ssize_t hdpvr_read(struct file *file, char __user *buffer, size_t count, 410 loff_t *pos) 411 { 412 struct hdpvr_device *dev = video_drvdata(file); 413 struct hdpvr_buffer *buf = NULL; 414 struct urb *urb; 415 unsigned int ret = 0; 416 int rem, cnt; 417 418 if (*pos) 419 return -ESPIPE; 420 421 mutex_lock(&dev->io_mutex); 422 if (dev->status == STATUS_IDLE) { 423 if (hdpvr_start_streaming(dev)) { 424 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 425 "start_streaming failed\n"); 426 ret = -EIO; 427 msleep(200); 428 dev->status = STATUS_IDLE; 429 mutex_unlock(&dev->io_mutex); 430 goto err; 431 } 432 dev->owner = file->private_data; 433 print_buffer_status(); 434 } 435 mutex_unlock(&dev->io_mutex); 436 437 /* wait for the first buffer */ 438 if (!(file->f_flags & O_NONBLOCK)) { 439 if (wait_event_interruptible(dev->wait_data, 440 hdpvr_get_next_buffer(dev))) 441 return -ERESTARTSYS; 442 } 443 444 buf = hdpvr_get_next_buffer(dev); 445 446 while (count > 0 && buf) { 447 448 if (buf->status != BUFSTAT_READY && 449 dev->status != STATUS_DISCONNECTED) { 450 /* return nonblocking */ 451 if (file->f_flags & O_NONBLOCK) { 452 if (!ret) 453 ret = -EAGAIN; 454 goto err; 455 } 456 457 if (wait_event_interruptible(dev->wait_data, 458 buf->status == BUFSTAT_READY)) { 459 ret = -ERESTARTSYS; 460 goto err; 461 } 462 } 463 464 if (buf->status != BUFSTAT_READY) 465 break; 466 467 /* set remaining bytes to copy */ 468 urb = buf->urb; 469 rem = urb->actual_length - buf->pos; 470 cnt = rem > count ? count : rem; 471 472 if (copy_to_user(buffer, urb->transfer_buffer + buf->pos, 473 cnt)) { 474 v4l2_err(&dev->v4l2_dev, "read: copy_to_user failed\n"); 475 if (!ret) 476 ret = -EFAULT; 477 goto err; 478 } 479 480 buf->pos += cnt; 481 count -= cnt; 482 buffer += cnt; 483 ret += cnt; 484 485 /* finished, take next buffer */ 486 if (buf->pos == urb->actual_length) { 487 mutex_lock(&dev->io_mutex); 488 buf->pos = 0; 489 buf->status = BUFSTAT_AVAILABLE; 490 491 list_move_tail(&buf->buff_list, &dev->free_buff_list); 492 493 print_buffer_status(); 494 495 mutex_unlock(&dev->io_mutex); 496 497 wake_up_interruptible(&dev->wait_buffer); 498 499 buf = hdpvr_get_next_buffer(dev); 500 } 501 } 502 err: 503 if (!ret && !buf) 504 ret = -EAGAIN; 505 return ret; 506 } 507 508 static unsigned int hdpvr_poll(struct file *filp, poll_table *wait) 509 { 510 unsigned long req_events = poll_requested_events(wait); 511 struct hdpvr_buffer *buf = NULL; 512 struct hdpvr_device *dev = video_drvdata(filp); 513 unsigned int mask = v4l2_ctrl_poll(filp, wait); 514 515 if (!(req_events & (POLLIN | POLLRDNORM))) 516 return mask; 517 518 mutex_lock(&dev->io_mutex); 519 520 if (dev->status == STATUS_IDLE) { 521 if (hdpvr_start_streaming(dev)) { 522 v4l2_dbg(MSG_BUFFER, hdpvr_debug, &dev->v4l2_dev, 523 "start_streaming failed\n"); 524 dev->status = STATUS_IDLE; 525 } else { 526 dev->owner = filp->private_data; 527 } 528 529 print_buffer_status(); 530 } 531 mutex_unlock(&dev->io_mutex); 532 533 buf = hdpvr_get_next_buffer(dev); 534 /* only wait if no data is available */ 535 if (!buf || buf->status != BUFSTAT_READY) { 536 poll_wait(filp, &dev->wait_data, wait); 537 buf = hdpvr_get_next_buffer(dev); 538 } 539 if (buf && buf->status == BUFSTAT_READY) 540 mask |= POLLIN | POLLRDNORM; 541 542 return mask; 543 } 544 545 546 static const struct v4l2_file_operations hdpvr_fops = { 547 .owner = THIS_MODULE, 548 .open = hdpvr_open, 549 .release = hdpvr_release, 550 .read = hdpvr_read, 551 .poll = hdpvr_poll, 552 .unlocked_ioctl = video_ioctl2, 553 }; 554 555 /*=======================================================================*/ 556 /* 557 * V4L2 ioctl handling 558 */ 559 560 static int vidioc_querycap(struct file *file, void *priv, 561 struct v4l2_capability *cap) 562 { 563 struct hdpvr_device *dev = video_drvdata(file); 564 565 strcpy(cap->driver, "hdpvr"); 566 strcpy(cap->card, "Hauppauge HD PVR"); 567 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 568 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO | 569 V4L2_CAP_READWRITE; 570 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 571 return 0; 572 } 573 574 static int vidioc_s_std(struct file *file, void *_fh, 575 v4l2_std_id std) 576 { 577 struct hdpvr_device *dev = video_drvdata(file); 578 struct hdpvr_fh *fh = _fh; 579 u8 std_type = 1; 580 581 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 582 return -ENODATA; 583 if (dev->status != STATUS_IDLE) 584 return -EBUSY; 585 if (std & V4L2_STD_525_60) 586 std_type = 0; 587 dev->cur_std = std; 588 dev->width = 720; 589 dev->height = std_type ? 576 : 480; 590 591 return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type); 592 } 593 594 static int vidioc_g_std(struct file *file, void *_fh, 595 v4l2_std_id *std) 596 { 597 struct hdpvr_device *dev = video_drvdata(file); 598 struct hdpvr_fh *fh = _fh; 599 600 if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT) 601 return -ENODATA; 602 *std = dev->cur_std; 603 return 0; 604 } 605 606 static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a) 607 { 608 struct hdpvr_device *dev = video_drvdata(file); 609 struct hdpvr_video_info *vid_info; 610 struct hdpvr_fh *fh = _fh; 611 612 *a = V4L2_STD_ALL; 613 if (dev->options.video_input == HDPVR_COMPONENT) 614 return fh->legacy_mode ? 0 : -ENODATA; 615 vid_info = get_video_info(dev); 616 if (vid_info == NULL) 617 return 0; 618 if (vid_info->width == 720 && 619 (vid_info->height == 480 || vid_info->height == 576)) { 620 *a = (vid_info->height == 480) ? 621 V4L2_STD_525_60 : V4L2_STD_625_50; 622 } 623 kfree(vid_info); 624 return 0; 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 (v4l_match_dv_timings(timings, hdpvr_dv_timings + i, 0)) 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 vid_info = get_video_info(dev); 677 if (vid_info == NULL) 678 return -ENOLCK; 679 interlaced = vid_info->fps <= 30; 680 for (i = 0; i < ARRAY_SIZE(hdpvr_dv_timings); i++) { 681 const struct v4l2_bt_timings *bt = &hdpvr_dv_timings[i].bt; 682 unsigned hsize; 683 unsigned vsize; 684 unsigned fps; 685 686 hsize = bt->hfrontporch + bt->hsync + bt->hbackporch + bt->width; 687 vsize = bt->vfrontporch + bt->vsync + bt->vbackporch + 688 bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch + 689 bt->height; 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 kfree(vid_info); 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, 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; 991 992 /* 993 * The original driver would always returns the current detected 994 * resolution as the format (and EFAULT if it couldn't be detected). 995 * With the introduction of VIDIOC_QUERY_DV_TIMINGS there is now a 996 * better way of doing this, but to stay compatible with existing 997 * applications we assume legacy mode every time an application opens 998 * the device. Only if one of the new DV_TIMINGS ioctls is called 999 * will the filehandle go into 'normal' mode where g_fmt returns the 1000 * last set format. 1001 */ 1002 if (fh->legacy_mode) { 1003 struct hdpvr_video_info *vid_info; 1004 1005 vid_info = get_video_info(dev); 1006 if (!vid_info) 1007 return -EFAULT; 1008 f->fmt.pix.width = vid_info->width; 1009 f->fmt.pix.height = vid_info->height; 1010 kfree(vid_info); 1011 } else { 1012 f->fmt.pix.width = dev->width; 1013 f->fmt.pix.height = dev->height; 1014 } 1015 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 1016 f->fmt.pix.sizeimage = dev->bulk_in_size; 1017 f->fmt.pix.bytesperline = 0; 1018 f->fmt.pix.priv = 0; 1019 if (f->fmt.pix.width == 720) { 1020 /* SDTV formats */ 1021 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1022 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 1023 } else { 1024 /* HDTV formats */ 1025 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE240M; 1026 f->fmt.pix.field = V4L2_FIELD_NONE; 1027 } 1028 return 0; 1029 } 1030 1031 static int vidioc_encoder_cmd(struct file *filp, void *priv, 1032 struct v4l2_encoder_cmd *a) 1033 { 1034 struct hdpvr_device *dev = video_drvdata(filp); 1035 int res = 0; 1036 1037 mutex_lock(&dev->io_mutex); 1038 a->flags = 0; 1039 1040 switch (a->cmd) { 1041 case V4L2_ENC_CMD_START: 1042 if (dev->owner && filp->private_data != dev->owner) { 1043 res = -EBUSY; 1044 break; 1045 } 1046 if (dev->status == STATUS_STREAMING) 1047 break; 1048 res = hdpvr_start_streaming(dev); 1049 if (!res) 1050 dev->owner = filp->private_data; 1051 else 1052 dev->status = STATUS_IDLE; 1053 break; 1054 case V4L2_ENC_CMD_STOP: 1055 if (dev->owner && filp->private_data != dev->owner) { 1056 res = -EBUSY; 1057 break; 1058 } 1059 if (dev->status == STATUS_IDLE) 1060 break; 1061 res = hdpvr_stop_streaming(dev); 1062 if (!res) 1063 dev->owner = NULL; 1064 break; 1065 default: 1066 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 1067 "Unsupported encoder cmd %d\n", a->cmd); 1068 res = -EINVAL; 1069 break; 1070 } 1071 1072 mutex_unlock(&dev->io_mutex); 1073 return res; 1074 } 1075 1076 static int vidioc_try_encoder_cmd(struct file *filp, void *priv, 1077 struct v4l2_encoder_cmd *a) 1078 { 1079 a->flags = 0; 1080 switch (a->cmd) { 1081 case V4L2_ENC_CMD_START: 1082 case V4L2_ENC_CMD_STOP: 1083 return 0; 1084 default: 1085 return -EINVAL; 1086 } 1087 } 1088 1089 static const struct v4l2_ioctl_ops hdpvr_ioctl_ops = { 1090 .vidioc_querycap = vidioc_querycap, 1091 .vidioc_s_std = vidioc_s_std, 1092 .vidioc_g_std = vidioc_g_std, 1093 .vidioc_querystd = vidioc_querystd, 1094 .vidioc_s_dv_timings = vidioc_s_dv_timings, 1095 .vidioc_g_dv_timings = vidioc_g_dv_timings, 1096 .vidioc_query_dv_timings= vidioc_query_dv_timings, 1097 .vidioc_enum_dv_timings = vidioc_enum_dv_timings, 1098 .vidioc_dv_timings_cap = vidioc_dv_timings_cap, 1099 .vidioc_enum_input = vidioc_enum_input, 1100 .vidioc_g_input = vidioc_g_input, 1101 .vidioc_s_input = vidioc_s_input, 1102 .vidioc_enumaudio = vidioc_enumaudio, 1103 .vidioc_g_audio = vidioc_g_audio, 1104 .vidioc_s_audio = vidioc_s_audio, 1105 .vidioc_enum_fmt_vid_cap= vidioc_enum_fmt_vid_cap, 1106 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1107 .vidioc_s_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1108 .vidioc_try_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1109 .vidioc_encoder_cmd = vidioc_encoder_cmd, 1110 .vidioc_try_encoder_cmd = vidioc_try_encoder_cmd, 1111 .vidioc_log_status = v4l2_ctrl_log_status, 1112 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1113 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1114 }; 1115 1116 static void hdpvr_device_release(struct video_device *vdev) 1117 { 1118 struct hdpvr_device *dev = video_get_drvdata(vdev); 1119 1120 hdpvr_delete(dev); 1121 mutex_lock(&dev->io_mutex); 1122 destroy_workqueue(dev->workqueue); 1123 mutex_unlock(&dev->io_mutex); 1124 1125 v4l2_device_unregister(&dev->v4l2_dev); 1126 v4l2_ctrl_handler_free(&dev->hdl); 1127 1128 /* deregister I2C adapter */ 1129 #if IS_ENABLED(CONFIG_I2C) 1130 mutex_lock(&dev->i2c_mutex); 1131 i2c_del_adapter(&dev->i2c_adapter); 1132 mutex_unlock(&dev->i2c_mutex); 1133 #endif /* CONFIG_I2C */ 1134 1135 kfree(dev->usbc_buf); 1136 kfree(dev); 1137 } 1138 1139 static const struct video_device hdpvr_video_template = { 1140 .fops = &hdpvr_fops, 1141 .release = hdpvr_device_release, 1142 .ioctl_ops = &hdpvr_ioctl_ops, 1143 .tvnorms = V4L2_STD_ALL, 1144 }; 1145 1146 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = { 1147 .try_ctrl = hdpvr_try_ctrl, 1148 .s_ctrl = hdpvr_s_ctrl, 1149 }; 1150 1151 int hdpvr_register_videodev(struct hdpvr_device *dev, struct device *parent, 1152 int devnum) 1153 { 1154 struct v4l2_ctrl_handler *hdl = &dev->hdl; 1155 bool ac3 = dev->flags & HDPVR_FLAG_AC3_CAP; 1156 int res; 1157 1158 dev->cur_std = V4L2_STD_525_60; 1159 dev->width = 720; 1160 dev->height = 480; 1161 dev->cur_dv_timings = hdpvr_dv_timings[HDPVR_DEF_DV_TIMINGS_IDX]; 1162 v4l2_ctrl_handler_init(hdl, 11); 1163 if (dev->fw_ver > 0x15) { 1164 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1165 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x80); 1166 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1167 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x40); 1168 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1169 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x40); 1170 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1171 V4L2_CID_HUE, 0x0, 0x1e, 1, 0xf); 1172 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1173 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1174 } else { 1175 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1176 V4L2_CID_BRIGHTNESS, 0x0, 0xff, 1, 0x86); 1177 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1178 V4L2_CID_CONTRAST, 0x0, 0xff, 1, 0x80); 1179 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1180 V4L2_CID_SATURATION, 0x0, 0xff, 1, 0x80); 1181 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1182 V4L2_CID_HUE, 0x0, 0xff, 1, 0x80); 1183 v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1184 V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x80); 1185 } 1186 1187 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1188 V4L2_CID_MPEG_STREAM_TYPE, 1189 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 1190 0x1, V4L2_MPEG_STREAM_TYPE_MPEG2_TS); 1191 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1192 V4L2_CID_MPEG_AUDIO_ENCODING, 1193 ac3 ? V4L2_MPEG_AUDIO_ENCODING_AC3 : V4L2_MPEG_AUDIO_ENCODING_AAC, 1194 0x7, V4L2_MPEG_AUDIO_ENCODING_AAC); 1195 v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1196 V4L2_CID_MPEG_VIDEO_ENCODING, 1197 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC, 0x3, 1198 V4L2_MPEG_VIDEO_ENCODING_MPEG_4_AVC); 1199 1200 dev->video_mode = v4l2_ctrl_new_std_menu(hdl, &hdpvr_ctrl_ops, 1201 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1202 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1203 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR); 1204 1205 dev->video_bitrate = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1206 V4L2_CID_MPEG_VIDEO_BITRATE, 1207 1000000, 13500000, 100000, 6500000); 1208 dev->video_bitrate_peak = v4l2_ctrl_new_std(hdl, &hdpvr_ctrl_ops, 1209 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1210 1100000, 20200000, 100000, 9000000); 1211 dev->v4l2_dev.ctrl_handler = hdl; 1212 if (hdl->error) { 1213 res = hdl->error; 1214 v4l2_err(&dev->v4l2_dev, "Could not register controls\n"); 1215 goto error; 1216 } 1217 v4l2_ctrl_cluster(3, &dev->video_mode); 1218 res = v4l2_ctrl_handler_setup(hdl); 1219 if (res < 0) { 1220 v4l2_err(&dev->v4l2_dev, "Could not setup controls\n"); 1221 goto error; 1222 } 1223 1224 /* setup and register video device */ 1225 dev->video_dev = video_device_alloc(); 1226 if (!dev->video_dev) { 1227 v4l2_err(&dev->v4l2_dev, "video_device_alloc() failed\n"); 1228 res = -ENOMEM; 1229 goto error; 1230 } 1231 1232 *dev->video_dev = hdpvr_video_template; 1233 strcpy(dev->video_dev->name, "Hauppauge HD PVR"); 1234 dev->video_dev->v4l2_dev = &dev->v4l2_dev; 1235 video_set_drvdata(dev->video_dev, dev); 1236 set_bit(V4L2_FL_USE_FH_PRIO, &dev->video_dev->flags); 1237 1238 res = video_register_device(dev->video_dev, VFL_TYPE_GRABBER, devnum); 1239 if (res < 0) { 1240 v4l2_err(&dev->v4l2_dev, "video_device registration failed\n"); 1241 goto error; 1242 } 1243 1244 return 0; 1245 error: 1246 v4l2_ctrl_handler_free(hdl); 1247 return res; 1248 } 1249