1 /* 2 * cx18 init/start/stop/exit stream functions 3 * 4 * Derived from ivtv-streams.c 5 * 6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 7 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 22 * 02111-1307 USA 23 */ 24 25 #include "cx18-driver.h" 26 #include "cx18-io.h" 27 #include "cx18-fileops.h" 28 #include "cx18-mailbox.h" 29 #include "cx18-i2c.h" 30 #include "cx18-queue.h" 31 #include "cx18-ioctl.h" 32 #include "cx18-streams.h" 33 #include "cx18-cards.h" 34 #include "cx18-scb.h" 35 #include "cx18-dvb.h" 36 37 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C 38 39 static struct v4l2_file_operations cx18_v4l2_enc_fops = { 40 .owner = THIS_MODULE, 41 .read = cx18_v4l2_read, 42 .open = cx18_v4l2_open, 43 .unlocked_ioctl = video_ioctl2, 44 .release = cx18_v4l2_close, 45 .poll = cx18_v4l2_enc_poll, 46 .mmap = cx18_v4l2_mmap, 47 }; 48 49 /* offset from 0 to register ts v4l2 minors on */ 50 #define CX18_V4L2_ENC_TS_OFFSET 16 51 /* offset from 0 to register pcm v4l2 minors on */ 52 #define CX18_V4L2_ENC_PCM_OFFSET 24 53 /* offset from 0 to register yuv v4l2 minors on */ 54 #define CX18_V4L2_ENC_YUV_OFFSET 32 55 56 static struct { 57 const char *name; 58 int vfl_type; 59 int num_offset; 60 int dma; 61 } cx18_stream_info[] = { 62 { /* CX18_ENC_STREAM_TYPE_MPG */ 63 "encoder MPEG", 64 VFL_TYPE_GRABBER, 0, 65 PCI_DMA_FROMDEVICE, 66 }, 67 { /* CX18_ENC_STREAM_TYPE_TS */ 68 "TS", 69 VFL_TYPE_GRABBER, -1, 70 PCI_DMA_FROMDEVICE, 71 }, 72 { /* CX18_ENC_STREAM_TYPE_YUV */ 73 "encoder YUV", 74 VFL_TYPE_GRABBER, CX18_V4L2_ENC_YUV_OFFSET, 75 PCI_DMA_FROMDEVICE, 76 }, 77 { /* CX18_ENC_STREAM_TYPE_VBI */ 78 "encoder VBI", 79 VFL_TYPE_VBI, 0, 80 PCI_DMA_FROMDEVICE, 81 }, 82 { /* CX18_ENC_STREAM_TYPE_PCM */ 83 "encoder PCM audio", 84 VFL_TYPE_GRABBER, CX18_V4L2_ENC_PCM_OFFSET, 85 PCI_DMA_FROMDEVICE, 86 }, 87 { /* CX18_ENC_STREAM_TYPE_IDX */ 88 "encoder IDX", 89 VFL_TYPE_GRABBER, -1, 90 PCI_DMA_FROMDEVICE, 91 }, 92 { /* CX18_ENC_STREAM_TYPE_RAD */ 93 "encoder radio", 94 VFL_TYPE_RADIO, 0, 95 PCI_DMA_NONE, 96 }, 97 }; 98 99 100 static void cx18_dma_free(struct videobuf_queue *q, 101 struct cx18_stream *s, struct cx18_videobuf_buffer *buf) 102 { 103 videobuf_waiton(q, &buf->vb, 0, 0); 104 videobuf_vmalloc_free(&buf->vb); 105 buf->vb.state = VIDEOBUF_NEEDS_INIT; 106 } 107 108 static int cx18_prepare_buffer(struct videobuf_queue *q, 109 struct cx18_stream *s, 110 struct cx18_videobuf_buffer *buf, 111 u32 pixelformat, 112 unsigned int width, unsigned int height, 113 enum v4l2_field field) 114 { 115 struct cx18 *cx = s->cx; 116 int rc = 0; 117 118 /* check settings */ 119 buf->bytes_used = 0; 120 121 if ((width < 48) || (height < 32)) 122 return -EINVAL; 123 124 buf->vb.size = (width * height * 2); 125 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 126 return -EINVAL; 127 128 /* alloc + fill struct (if changed) */ 129 if (buf->vb.width != width || buf->vb.height != height || 130 buf->vb.field != field || s->pixelformat != pixelformat || 131 buf->tvnorm != cx->std) { 132 133 buf->vb.width = width; 134 buf->vb.height = height; 135 buf->vb.field = field; 136 buf->tvnorm = cx->std; 137 s->pixelformat = pixelformat; 138 139 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 140 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 141 if (s->pixelformat == V4L2_PIX_FMT_HM12) 142 s->vb_bytes_per_frame = height * 720 * 3 / 2; 143 else 144 s->vb_bytes_per_frame = height * 720 * 2; 145 cx18_dma_free(q, s, buf); 146 } 147 148 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 149 return -EINVAL; 150 151 if (buf->vb.field == 0) 152 buf->vb.field = V4L2_FIELD_INTERLACED; 153 154 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 155 buf->vb.width = width; 156 buf->vb.height = height; 157 buf->vb.field = field; 158 buf->tvnorm = cx->std; 159 s->pixelformat = pixelformat; 160 161 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 162 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 163 if (s->pixelformat == V4L2_PIX_FMT_HM12) 164 s->vb_bytes_per_frame = height * 720 * 3 / 2; 165 else 166 s->vb_bytes_per_frame = height * 720 * 2; 167 rc = videobuf_iolock(q, &buf->vb, NULL); 168 if (rc != 0) 169 goto fail; 170 } 171 buf->vb.state = VIDEOBUF_PREPARED; 172 return 0; 173 174 fail: 175 cx18_dma_free(q, s, buf); 176 return rc; 177 178 } 179 180 /* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576) 181 1440 is a single line of 4:2:2 YUV at 720 luma samples wide 182 */ 183 #define VB_MIN_BUFFERS 32 184 #define VB_MIN_BUFSIZE 4147200 185 186 static int buffer_setup(struct videobuf_queue *q, 187 unsigned int *count, unsigned int *size) 188 { 189 struct cx18_stream *s = q->priv_data; 190 struct cx18 *cx = s->cx; 191 192 *size = 2 * cx->cxhdl.width * cx->cxhdl.height; 193 if (*count == 0) 194 *count = VB_MIN_BUFFERS; 195 196 while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE) 197 (*count)--; 198 199 q->field = V4L2_FIELD_INTERLACED; 200 q->last = V4L2_FIELD_INTERLACED; 201 202 return 0; 203 } 204 205 static int buffer_prepare(struct videobuf_queue *q, 206 struct videobuf_buffer *vb, 207 enum v4l2_field field) 208 { 209 struct cx18_videobuf_buffer *buf = 210 container_of(vb, struct cx18_videobuf_buffer, vb); 211 struct cx18_stream *s = q->priv_data; 212 struct cx18 *cx = s->cx; 213 214 return cx18_prepare_buffer(q, s, buf, s->pixelformat, 215 cx->cxhdl.width, cx->cxhdl.height, field); 216 } 217 218 static void buffer_release(struct videobuf_queue *q, 219 struct videobuf_buffer *vb) 220 { 221 struct cx18_videobuf_buffer *buf = 222 container_of(vb, struct cx18_videobuf_buffer, vb); 223 struct cx18_stream *s = q->priv_data; 224 225 cx18_dma_free(q, s, buf); 226 } 227 228 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) 229 { 230 struct cx18_videobuf_buffer *buf = 231 container_of(vb, struct cx18_videobuf_buffer, vb); 232 struct cx18_stream *s = q->priv_data; 233 234 buf->vb.state = VIDEOBUF_QUEUED; 235 236 list_add_tail(&buf->vb.queue, &s->vb_capture); 237 } 238 239 static struct videobuf_queue_ops cx18_videobuf_qops = { 240 .buf_setup = buffer_setup, 241 .buf_prepare = buffer_prepare, 242 .buf_queue = buffer_queue, 243 .buf_release = buffer_release, 244 }; 245 246 static void cx18_stream_init(struct cx18 *cx, int type) 247 { 248 struct cx18_stream *s = &cx->streams[type]; 249 struct video_device *video_dev = s->video_dev; 250 251 /* we need to keep video_dev, so restore it afterwards */ 252 memset(s, 0, sizeof(*s)); 253 s->video_dev = video_dev; 254 255 /* initialize cx18_stream fields */ 256 s->dvb = NULL; 257 s->cx = cx; 258 s->type = type; 259 s->name = cx18_stream_info[type].name; 260 s->handle = CX18_INVALID_TASK_HANDLE; 261 262 s->dma = cx18_stream_info[type].dma; 263 s->buffers = cx->stream_buffers[type]; 264 s->buf_size = cx->stream_buf_size[type]; 265 INIT_LIST_HEAD(&s->buf_pool); 266 s->bufs_per_mdl = 1; 267 s->mdl_size = s->buf_size * s->bufs_per_mdl; 268 269 init_waitqueue_head(&s->waitq); 270 s->id = -1; 271 spin_lock_init(&s->q_free.lock); 272 cx18_queue_init(&s->q_free); 273 spin_lock_init(&s->q_busy.lock); 274 cx18_queue_init(&s->q_busy); 275 spin_lock_init(&s->q_full.lock); 276 cx18_queue_init(&s->q_full); 277 spin_lock_init(&s->q_idle.lock); 278 cx18_queue_init(&s->q_idle); 279 280 INIT_WORK(&s->out_work_order, cx18_out_work_handler); 281 282 INIT_LIST_HEAD(&s->vb_capture); 283 s->vb_timeout.function = cx18_vb_timeout; 284 s->vb_timeout.data = (unsigned long)s; 285 init_timer(&s->vb_timeout); 286 spin_lock_init(&s->vb_lock); 287 if (type == CX18_ENC_STREAM_TYPE_YUV) { 288 spin_lock_init(&s->vbuf_q_lock); 289 290 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 291 videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops, 292 &cx->pci_dev->dev, &s->vbuf_q_lock, 293 V4L2_BUF_TYPE_VIDEO_CAPTURE, 294 V4L2_FIELD_INTERLACED, 295 sizeof(struct cx18_videobuf_buffer), 296 s, &cx->serialize_lock); 297 298 /* Assume the previous pixel default */ 299 s->pixelformat = V4L2_PIX_FMT_HM12; 300 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2; 301 } 302 } 303 304 static int cx18_prep_dev(struct cx18 *cx, int type) 305 { 306 struct cx18_stream *s = &cx->streams[type]; 307 u32 cap = cx->v4l2_cap; 308 int num_offset = cx18_stream_info[type].num_offset; 309 int num = cx->instance + cx18_first_minor + num_offset; 310 311 /* 312 * These five fields are always initialized. 313 * For analog capture related streams, if video_dev == NULL then the 314 * stream is not in use. 315 * For the TS stream, if dvb == NULL then the stream is not in use. 316 * In those cases no other fields but these four can be used. 317 */ 318 s->video_dev = NULL; 319 s->dvb = NULL; 320 s->cx = cx; 321 s->type = type; 322 s->name = cx18_stream_info[type].name; 323 324 /* Check whether the radio is supported */ 325 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) 326 return 0; 327 328 /* Check whether VBI is supported */ 329 if (type == CX18_ENC_STREAM_TYPE_VBI && 330 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) 331 return 0; 332 333 /* User explicitly selected 0 buffers for these streams, so don't 334 create them. */ 335 if (cx18_stream_info[type].dma != PCI_DMA_NONE && 336 cx->stream_buffers[type] == 0) { 337 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); 338 return 0; 339 } 340 341 cx18_stream_init(cx, type); 342 343 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */ 344 if (type == CX18_ENC_STREAM_TYPE_TS) { 345 if (cx->card->hw_all & CX18_HW_DVB) { 346 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL); 347 if (s->dvb == NULL) { 348 CX18_ERR("Couldn't allocate cx18_dvb structure" 349 " for %s\n", s->name); 350 return -ENOMEM; 351 } 352 } else { 353 /* Don't need buffers for the TS, if there is no DVB */ 354 s->buffers = 0; 355 } 356 } 357 358 if (num_offset == -1) 359 return 0; 360 361 /* allocate and initialize the v4l2 video device structure */ 362 s->video_dev = video_device_alloc(); 363 if (s->video_dev == NULL) { 364 CX18_ERR("Couldn't allocate v4l2 video_device for %s\n", 365 s->name); 366 return -ENOMEM; 367 } 368 369 snprintf(s->video_dev->name, sizeof(s->video_dev->name), "%s %s", 370 cx->v4l2_dev.name, s->name); 371 372 s->video_dev->num = num; 373 s->video_dev->v4l2_dev = &cx->v4l2_dev; 374 s->video_dev->fops = &cx18_v4l2_enc_fops; 375 s->video_dev->release = video_device_release; 376 s->video_dev->tvnorms = V4L2_STD_ALL; 377 s->video_dev->lock = &cx->serialize_lock; 378 set_bit(V4L2_FL_USE_FH_PRIO, &s->video_dev->flags); 379 cx18_set_funcs(s->video_dev); 380 return 0; 381 } 382 383 /* Initialize v4l2 variables and register v4l2 devices */ 384 int cx18_streams_setup(struct cx18 *cx) 385 { 386 int type, ret; 387 388 /* Setup V4L2 Devices */ 389 for (type = 0; type < CX18_MAX_STREAMS; type++) { 390 /* Prepare device */ 391 ret = cx18_prep_dev(cx, type); 392 if (ret < 0) 393 break; 394 395 /* Allocate Stream */ 396 ret = cx18_stream_alloc(&cx->streams[type]); 397 if (ret < 0) 398 break; 399 } 400 if (type == CX18_MAX_STREAMS) 401 return 0; 402 403 /* One or more streams could not be initialized. Clean 'em all up. */ 404 cx18_streams_cleanup(cx, 0); 405 return ret; 406 } 407 408 static int cx18_reg_dev(struct cx18 *cx, int type) 409 { 410 struct cx18_stream *s = &cx->streams[type]; 411 int vfl_type = cx18_stream_info[type].vfl_type; 412 const char *name; 413 int num, ret; 414 415 if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) { 416 ret = cx18_dvb_register(s); 417 if (ret < 0) { 418 CX18_ERR("DVB failed to register\n"); 419 return ret; 420 } 421 } 422 423 if (s->video_dev == NULL) 424 return 0; 425 426 num = s->video_dev->num; 427 /* card number + user defined offset + device offset */ 428 if (type != CX18_ENC_STREAM_TYPE_MPG) { 429 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; 430 431 if (s_mpg->video_dev) 432 num = s_mpg->video_dev->num 433 + cx18_stream_info[type].num_offset; 434 } 435 video_set_drvdata(s->video_dev, s); 436 437 /* Register device. First try the desired minor, then any free one. */ 438 ret = video_register_device_no_warn(s->video_dev, vfl_type, num); 439 if (ret < 0) { 440 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 441 s->name, num); 442 video_device_release(s->video_dev); 443 s->video_dev = NULL; 444 return ret; 445 } 446 447 name = video_device_node_name(s->video_dev); 448 449 switch (vfl_type) { 450 case VFL_TYPE_GRABBER: 451 CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n", 452 name, s->name, cx->stream_buffers[type], 453 cx->stream_buf_size[type] / 1024, 454 (cx->stream_buf_size[type] * 100 / 1024) % 100); 455 break; 456 457 case VFL_TYPE_RADIO: 458 CX18_INFO("Registered device %s for %s\n", name, s->name); 459 break; 460 461 case VFL_TYPE_VBI: 462 if (cx->stream_buffers[type]) 463 CX18_INFO("Registered device %s for %s " 464 "(%d x %d bytes)\n", 465 name, s->name, cx->stream_buffers[type], 466 cx->stream_buf_size[type]); 467 else 468 CX18_INFO("Registered device %s for %s\n", 469 name, s->name); 470 break; 471 } 472 473 return 0; 474 } 475 476 /* Register v4l2 devices */ 477 int cx18_streams_register(struct cx18 *cx) 478 { 479 int type; 480 int err; 481 int ret = 0; 482 483 /* Register V4L2 devices */ 484 for (type = 0; type < CX18_MAX_STREAMS; type++) { 485 err = cx18_reg_dev(cx, type); 486 if (err && ret == 0) 487 ret = err; 488 } 489 490 if (ret == 0) 491 return 0; 492 493 /* One or more streams could not be initialized. Clean 'em all up. */ 494 cx18_streams_cleanup(cx, 1); 495 return ret; 496 } 497 498 /* Unregister v4l2 devices */ 499 void cx18_streams_cleanup(struct cx18 *cx, int unregister) 500 { 501 struct video_device *vdev; 502 int type; 503 504 /* Teardown all streams */ 505 for (type = 0; type < CX18_MAX_STREAMS; type++) { 506 507 /* The TS has a cx18_dvb structure, not a video_device */ 508 if (type == CX18_ENC_STREAM_TYPE_TS) { 509 if (cx->streams[type].dvb != NULL) { 510 if (unregister) 511 cx18_dvb_unregister(&cx->streams[type]); 512 kfree(cx->streams[type].dvb); 513 cx->streams[type].dvb = NULL; 514 cx18_stream_free(&cx->streams[type]); 515 } 516 continue; 517 } 518 519 /* No struct video_device, but can have buffers allocated */ 520 if (type == CX18_ENC_STREAM_TYPE_IDX) { 521 /* If the module params didn't inhibit IDX ... */ 522 if (cx->stream_buffers[type] != 0) { 523 cx->stream_buffers[type] = 0; 524 /* 525 * Before calling cx18_stream_free(), 526 * check if the IDX stream was actually set up. 527 * Needed, since the cx18_probe() error path 528 * exits through here as well as normal clean up 529 */ 530 if (cx->streams[type].buffers != 0) 531 cx18_stream_free(&cx->streams[type]); 532 } 533 continue; 534 } 535 536 /* If struct video_device exists, can have buffers allocated */ 537 vdev = cx->streams[type].video_dev; 538 539 cx->streams[type].video_dev = NULL; 540 if (vdev == NULL) 541 continue; 542 543 if (type == CX18_ENC_STREAM_TYPE_YUV) 544 videobuf_mmap_free(&cx->streams[type].vbuf_q); 545 546 cx18_stream_free(&cx->streams[type]); 547 548 /* Unregister or release device */ 549 if (unregister) 550 video_unregister_device(vdev); 551 else 552 video_device_release(vdev); 553 } 554 } 555 556 static void cx18_vbi_setup(struct cx18_stream *s) 557 { 558 struct cx18 *cx = s->cx; 559 int raw = cx18_raw_vbi(cx); 560 u32 data[CX2341X_MBOX_MAX_DATA]; 561 int lines; 562 563 if (cx->is_60hz) { 564 cx->vbi.count = 12; 565 cx->vbi.start[0] = 10; 566 cx->vbi.start[1] = 273; 567 } else { /* PAL/SECAM */ 568 cx->vbi.count = 18; 569 cx->vbi.start[0] = 6; 570 cx->vbi.start[1] = 318; 571 } 572 573 /* setup VBI registers */ 574 if (raw) 575 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi); 576 else 577 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced); 578 579 /* 580 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw 581 * VBI when the first analog capture channel starts, as once it starts 582 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup 583 * (i.e. for the VBI capture channels). We also send it for each 584 * analog capture channel anyway just to make sure we get the proper 585 * behavior 586 */ 587 if (raw) { 588 lines = cx->vbi.count * 2; 589 } else { 590 /* 591 * For 525/60 systems, according to the VIP 2 & BT.656 std: 592 * The EAV RP code's Field bit toggles on line 4, a few lines 593 * after the Vertcal Blank bit has already toggled. 594 * Tell the encoder to capture 21-4+1=18 lines per field, 595 * since we want lines 10 through 21. 596 * 597 * For 625/50 systems, according to the VIP 2 & BT.656 std: 598 * The EAV RP code's Field bit toggles on line 1, a few lines 599 * after the Vertcal Blank bit has already toggled. 600 * (We've actually set the digitizer so that the Field bit 601 * toggles on line 2.) Tell the encoder to capture 23-2+1=22 602 * lines per field, since we want lines 6 through 23. 603 */ 604 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2; 605 } 606 607 data[0] = s->handle; 608 /* Lines per field */ 609 data[1] = (lines / 2) | ((lines / 2) << 16); 610 /* bytes per line */ 611 data[2] = (raw ? vbi_active_samples 612 : (cx->is_60hz ? vbi_hblank_samples_60Hz 613 : vbi_hblank_samples_50Hz)); 614 /* Every X number of frames a VBI interrupt arrives 615 (frames as in 25 or 30 fps) */ 616 data[3] = 1; 617 /* 618 * Set the SAV/EAV RP codes to look for as start/stop points 619 * when in VIP-1.1 mode 620 */ 621 if (raw) { 622 /* 623 * Start codes for beginning of "active" line in vertical blank 624 * 0x20 ( VerticalBlank ) 625 * 0x60 ( EvenField VerticalBlank ) 626 */ 627 data[4] = 0x20602060; 628 /* 629 * End codes for end of "active" raw lines and regular lines 630 * 0x30 ( VerticalBlank HorizontalBlank) 631 * 0x70 ( EvenField VerticalBlank HorizontalBlank) 632 * 0x90 (Task HorizontalBlank) 633 * 0xd0 (Task EvenField HorizontalBlank) 634 */ 635 data[5] = 0x307090d0; 636 } else { 637 /* 638 * End codes for active video, we want data in the hblank region 639 * 0xb0 (Task 0 VerticalBlank HorizontalBlank) 640 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank) 641 * 642 * Since the V bit is only allowed to toggle in the EAV RP code, 643 * just before the first active region line, these two 644 * are problematic: 645 * 0x90 (Task HorizontalBlank) 646 * 0xd0 (Task EvenField HorizontalBlank) 647 * 648 * We have set the digitzer such that we don't have to worry 649 * about these problem codes. 650 */ 651 data[4] = 0xB0F0B0F0; 652 /* 653 * Start codes for beginning of active line in vertical blank 654 * 0xa0 (Task VerticalBlank ) 655 * 0xe0 (Task EvenField VerticalBlank ) 656 */ 657 data[5] = 0xA0E0A0E0; 658 } 659 660 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", 661 data[0], data[1], data[2], data[3], data[4], data[5]); 662 663 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); 664 } 665 666 void cx18_stream_rotate_idx_mdls(struct cx18 *cx) 667 { 668 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 669 struct cx18_mdl *mdl; 670 671 if (!cx18_stream_enabled(s)) 672 return; 673 674 /* Return if the firmware is not running low on MDLs */ 675 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >= 676 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN) 677 return; 678 679 /* Return if there are no MDLs to rotate back to the firmware */ 680 if (atomic_read(&s->q_full.depth) < 2) 681 return; 682 683 /* 684 * Take the oldest IDX MDL still holding data, and discard its index 685 * entries by scheduling the MDL to go back to the firmware 686 */ 687 mdl = cx18_dequeue(s, &s->q_full); 688 if (mdl != NULL) 689 cx18_enqueue(s, mdl, &s->q_free); 690 } 691 692 static 693 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s, 694 struct cx18_mdl *mdl) 695 { 696 struct cx18 *cx = s->cx; 697 struct cx18_queue *q; 698 699 /* Don't give it to the firmware, if we're not running a capture */ 700 if (s->handle == CX18_INVALID_TASK_HANDLE || 701 test_bit(CX18_F_S_STOPPING, &s->s_flags) || 702 !test_bit(CX18_F_S_STREAMING, &s->s_flags)) 703 return cx18_enqueue(s, mdl, &s->q_free); 704 705 q = cx18_enqueue(s, mdl, &s->q_busy); 706 if (q != &s->q_busy) 707 return q; /* The firmware has the max MDLs it can handle */ 708 709 cx18_mdl_sync_for_device(s, mdl); 710 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, 711 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem, 712 s->bufs_per_mdl, mdl->id, s->mdl_size); 713 return q; 714 } 715 716 static 717 void _cx18_stream_load_fw_queue(struct cx18_stream *s) 718 { 719 struct cx18_queue *q; 720 struct cx18_mdl *mdl; 721 722 if (atomic_read(&s->q_free.depth) == 0 || 723 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM) 724 return; 725 726 /* Move from q_free to q_busy notifying the firmware, until the limit */ 727 do { 728 mdl = cx18_dequeue(s, &s->q_free); 729 if (mdl == NULL) 730 break; 731 q = _cx18_stream_put_mdl_fw(s, mdl); 732 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM 733 && q == &s->q_busy); 734 } 735 736 void cx18_out_work_handler(struct work_struct *work) 737 { 738 struct cx18_stream *s = 739 container_of(work, struct cx18_stream, out_work_order); 740 741 _cx18_stream_load_fw_queue(s); 742 } 743 744 static void cx18_stream_configure_mdls(struct cx18_stream *s) 745 { 746 cx18_unload_queues(s); 747 748 switch (s->type) { 749 case CX18_ENC_STREAM_TYPE_YUV: 750 /* 751 * Height should be a multiple of 32 lines. 752 * Set the MDL size to the exact size needed for one frame. 753 * Use enough buffers per MDL to cover the MDL size 754 */ 755 if (s->pixelformat == V4L2_PIX_FMT_HM12) 756 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2; 757 else 758 s->mdl_size = 720 * s->cx->cxhdl.height * 2; 759 s->bufs_per_mdl = s->mdl_size / s->buf_size; 760 if (s->mdl_size % s->buf_size) 761 s->bufs_per_mdl++; 762 break; 763 case CX18_ENC_STREAM_TYPE_VBI: 764 s->bufs_per_mdl = 1; 765 if (cx18_raw_vbi(s->cx)) { 766 s->mdl_size = (s->cx->is_60hz ? 12 : 18) 767 * 2 * vbi_active_samples; 768 } else { 769 /* 770 * See comment in cx18_vbi_setup() below about the 771 * extra lines we capture in sliced VBI mode due to 772 * the lines on which EAV RP codes toggle. 773 */ 774 s->mdl_size = s->cx->is_60hz 775 ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz 776 : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz; 777 } 778 break; 779 default: 780 s->bufs_per_mdl = 1; 781 s->mdl_size = s->buf_size * s->bufs_per_mdl; 782 break; 783 } 784 785 cx18_load_queues(s); 786 } 787 788 int cx18_start_v4l2_encode_stream(struct cx18_stream *s) 789 { 790 u32 data[MAX_MB_ARGUMENTS]; 791 struct cx18 *cx = s->cx; 792 int captype = 0; 793 struct cx18_stream *s_idx; 794 795 if (!cx18_stream_enabled(s)) 796 return -EINVAL; 797 798 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); 799 800 switch (s->type) { 801 case CX18_ENC_STREAM_TYPE_MPG: 802 captype = CAPTURE_CHANNEL_TYPE_MPEG; 803 cx->mpg_data_received = cx->vbi_data_inserted = 0; 804 cx->dualwatch_jiffies = jiffies; 805 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode); 806 cx->search_pack_header = 0; 807 break; 808 809 case CX18_ENC_STREAM_TYPE_IDX: 810 captype = CAPTURE_CHANNEL_TYPE_INDEX; 811 break; 812 case CX18_ENC_STREAM_TYPE_TS: 813 captype = CAPTURE_CHANNEL_TYPE_TS; 814 break; 815 case CX18_ENC_STREAM_TYPE_YUV: 816 captype = CAPTURE_CHANNEL_TYPE_YUV; 817 break; 818 case CX18_ENC_STREAM_TYPE_PCM: 819 captype = CAPTURE_CHANNEL_TYPE_PCM; 820 break; 821 case CX18_ENC_STREAM_TYPE_VBI: 822 #ifdef CX18_ENCODER_PARSES_SLICED 823 captype = cx18_raw_vbi(cx) ? 824 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; 825 #else 826 /* 827 * Currently we set things up so that Sliced VBI from the 828 * digitizer is handled as Raw VBI by the encoder 829 */ 830 captype = CAPTURE_CHANNEL_TYPE_VBI; 831 #endif 832 cx->vbi.frame = 0; 833 cx->vbi.inserted_frame = 0; 834 memset(cx->vbi.sliced_mpeg_size, 835 0, sizeof(cx->vbi.sliced_mpeg_size)); 836 break; 837 default: 838 return -EINVAL; 839 } 840 841 /* Clear Streamoff flags in case left from last capture */ 842 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); 843 844 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); 845 s->handle = data[0]; 846 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); 847 848 /* 849 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and 850 * set up all the parameters, as it is not obvious which parameters the 851 * firmware shares across capture channel types and which it does not. 852 * 853 * Some of the cx18_vapi() calls below apply to only certain capture 854 * channel types. We're hoping there's no harm in calling most of them 855 * anyway, as long as the values are all consistent. Setting some 856 * shared parameters will have no effect once an analog capture channel 857 * has started streaming. 858 */ 859 if (captype != CAPTURE_CHANNEL_TYPE_TS) { 860 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); 861 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); 862 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); 863 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); 864 865 /* 866 * Audio related reset according to 867 * Documentation/video4linux/cx2341x/fw-encoder-api.txt 868 */ 869 if (atomic_read(&cx->ana_capturing) == 0) 870 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, 871 s->handle, 12); 872 873 /* 874 * Number of lines for Field 1 & Field 2 according to 875 * Documentation/video4linux/cx2341x/fw-encoder-api.txt 876 * Field 1 is 312 for 625 line systems in BT.656 877 * Field 2 is 313 for 625 line systems in BT.656 878 */ 879 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, 880 s->handle, 312, 313); 881 882 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) 883 cx18_vbi_setup(s); 884 885 /* 886 * Select to receive I, P, and B frame index entries, if the 887 * index stream is enabled. Otherwise disable index entry 888 * generation. 889 */ 890 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 891 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2, 892 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0); 893 894 /* Call out to the common CX2341x API setup for user controls */ 895 cx->cxhdl.priv = s; 896 cx2341x_handler_setup(&cx->cxhdl); 897 898 /* 899 * When starting a capture and we're set for radio, 900 * ensure the video is muted, despite the user control. 901 */ 902 if (!cx->cxhdl.video_mute && 903 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) 904 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle, 905 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1); 906 907 /* Enable the Video Format Converter for UYVY 4:2:2 support, 908 * rather than the default HM12 Macroblovk 4:2:0 support. 909 */ 910 if (captype == CAPTURE_CHANNEL_TYPE_YUV) { 911 if (s->pixelformat == V4L2_PIX_FMT_UYVY) 912 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 913 s->handle, 1); 914 else 915 /* If in doubt, default to HM12 */ 916 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 917 s->handle, 0); 918 } 919 } 920 921 if (atomic_read(&cx->tot_capturing) == 0) { 922 cx2341x_handler_set_busy(&cx->cxhdl, 1); 923 clear_bit(CX18_F_I_EOS, &cx->i_flags); 924 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); 925 } 926 927 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, 928 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, 929 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); 930 931 /* Init all the cpu_mdls for this stream */ 932 cx18_stream_configure_mdls(s); 933 _cx18_stream_load_fw_queue(s); 934 935 /* begin_capture */ 936 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { 937 CX18_DEBUG_WARN("Error starting capture!\n"); 938 /* Ensure we're really not capturing before releasing MDLs */ 939 set_bit(CX18_F_S_STOPPING, &s->s_flags); 940 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 941 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); 942 else 943 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 944 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 945 /* FIXME - CX18_F_S_STREAMOFF as well? */ 946 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 947 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 948 s->handle = CX18_INVALID_TASK_HANDLE; 949 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 950 if (atomic_read(&cx->tot_capturing) == 0) { 951 set_bit(CX18_F_I_EOS, &cx->i_flags); 952 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 953 } 954 return -EINVAL; 955 } 956 957 /* you're live! sit back and await interrupts :) */ 958 if (captype != CAPTURE_CHANNEL_TYPE_TS) 959 atomic_inc(&cx->ana_capturing); 960 atomic_inc(&cx->tot_capturing); 961 return 0; 962 } 963 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream); 964 965 void cx18_stop_all_captures(struct cx18 *cx) 966 { 967 int i; 968 969 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { 970 struct cx18_stream *s = &cx->streams[i]; 971 972 if (!cx18_stream_enabled(s)) 973 continue; 974 if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) 975 cx18_stop_v4l2_encode_stream(s, 0); 976 } 977 } 978 979 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) 980 { 981 struct cx18 *cx = s->cx; 982 983 if (!cx18_stream_enabled(s)) 984 return -EINVAL; 985 986 /* This function assumes that you are allowed to stop the capture 987 and that we are actually capturing */ 988 989 CX18_DEBUG_INFO("Stop Capture\n"); 990 991 if (atomic_read(&cx->tot_capturing) == 0) 992 return 0; 993 994 set_bit(CX18_F_S_STOPPING, &s->s_flags); 995 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 996 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); 997 else 998 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 999 1000 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { 1001 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); 1002 } 1003 1004 if (s->type != CX18_ENC_STREAM_TYPE_TS) 1005 atomic_dec(&cx->ana_capturing); 1006 atomic_dec(&cx->tot_capturing); 1007 1008 /* Clear capture and no-read bits */ 1009 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 1010 1011 /* Tell the CX23418 it can't use our buffers anymore */ 1012 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 1013 1014 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 1015 s->handle = CX18_INVALID_TASK_HANDLE; 1016 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 1017 1018 if (atomic_read(&cx->tot_capturing) > 0) 1019 return 0; 1020 1021 cx2341x_handler_set_busy(&cx->cxhdl, 0); 1022 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 1023 wake_up(&s->waitq); 1024 1025 return 0; 1026 } 1027 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream); 1028 1029 u32 cx18_find_handle(struct cx18 *cx) 1030 { 1031 int i; 1032 1033 /* find first available handle to be used for global settings */ 1034 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1035 struct cx18_stream *s = &cx->streams[i]; 1036 1037 if (s->video_dev && (s->handle != CX18_INVALID_TASK_HANDLE)) 1038 return s->handle; 1039 } 1040 return CX18_INVALID_TASK_HANDLE; 1041 } 1042 1043 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) 1044 { 1045 int i; 1046 struct cx18_stream *s; 1047 1048 if (handle == CX18_INVALID_TASK_HANDLE) 1049 return NULL; 1050 1051 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1052 s = &cx->streams[i]; 1053 if (s->handle != handle) 1054 continue; 1055 if (cx18_stream_enabled(s)) 1056 return s; 1057 } 1058 return NULL; 1059 } 1060