1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * cx18 init/start/stop/exit stream functions 4 * 5 * Derived from ivtv-streams.c 6 * 7 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 8 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> 9 */ 10 11 #include "cx18-driver.h" 12 #include "cx18-io.h" 13 #include "cx18-fileops.h" 14 #include "cx18-mailbox.h" 15 #include "cx18-i2c.h" 16 #include "cx18-queue.h" 17 #include "cx18-ioctl.h" 18 #include "cx18-streams.h" 19 #include "cx18-cards.h" 20 #include "cx18-scb.h" 21 #include "cx18-dvb.h" 22 23 #define CX18_DSP0_INTERRUPT_MASK 0xd0004C 24 25 static const struct v4l2_file_operations cx18_v4l2_enc_fops = { 26 .owner = THIS_MODULE, 27 .read = cx18_v4l2_read, 28 .open = cx18_v4l2_open, 29 .unlocked_ioctl = video_ioctl2, 30 .release = cx18_v4l2_close, 31 .poll = cx18_v4l2_enc_poll, 32 .mmap = cx18_v4l2_mmap, 33 }; 34 35 /* offset from 0 to register ts v4l2 minors on */ 36 #define CX18_V4L2_ENC_TS_OFFSET 16 37 /* offset from 0 to register pcm v4l2 minors on */ 38 #define CX18_V4L2_ENC_PCM_OFFSET 24 39 /* offset from 0 to register yuv v4l2 minors on */ 40 #define CX18_V4L2_ENC_YUV_OFFSET 32 41 42 static struct { 43 const char *name; 44 int vfl_type; 45 int num_offset; 46 int dma; 47 u32 caps; 48 } cx18_stream_info[] = { 49 { /* CX18_ENC_STREAM_TYPE_MPG */ 50 "encoder MPEG", 51 VFL_TYPE_VIDEO, 0, 52 DMA_FROM_DEVICE, 53 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 54 V4L2_CAP_AUDIO | V4L2_CAP_TUNER 55 }, 56 { /* CX18_ENC_STREAM_TYPE_TS */ 57 "TS", 58 VFL_TYPE_VIDEO, -1, 59 DMA_FROM_DEVICE, 60 }, 61 { /* CX18_ENC_STREAM_TYPE_YUV */ 62 "encoder YUV", 63 VFL_TYPE_VIDEO, CX18_V4L2_ENC_YUV_OFFSET, 64 DMA_FROM_DEVICE, 65 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 66 V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER 67 }, 68 { /* CX18_ENC_STREAM_TYPE_VBI */ 69 "encoder VBI", 70 VFL_TYPE_VBI, 0, 71 DMA_FROM_DEVICE, 72 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | 73 V4L2_CAP_READWRITE | V4L2_CAP_TUNER 74 }, 75 { /* CX18_ENC_STREAM_TYPE_PCM */ 76 "encoder PCM audio", 77 VFL_TYPE_VIDEO, CX18_V4L2_ENC_PCM_OFFSET, 78 DMA_FROM_DEVICE, 79 V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 80 }, 81 { /* CX18_ENC_STREAM_TYPE_IDX */ 82 "encoder IDX", 83 VFL_TYPE_VIDEO, -1, 84 DMA_FROM_DEVICE, 85 }, 86 { /* CX18_ENC_STREAM_TYPE_RAD */ 87 "encoder radio", 88 VFL_TYPE_RADIO, 0, 89 DMA_NONE, 90 V4L2_CAP_RADIO | V4L2_CAP_TUNER 91 }, 92 }; 93 94 95 static void cx18_dma_free(struct videobuf_queue *q, 96 struct cx18_stream *s, struct cx18_videobuf_buffer *buf) 97 { 98 videobuf_waiton(q, &buf->vb, 0, 0); 99 videobuf_vmalloc_free(&buf->vb); 100 buf->vb.state = VIDEOBUF_NEEDS_INIT; 101 } 102 103 static int cx18_prepare_buffer(struct videobuf_queue *q, 104 struct cx18_stream *s, 105 struct cx18_videobuf_buffer *buf, 106 u32 pixelformat, 107 unsigned int width, unsigned int height, 108 enum v4l2_field field) 109 { 110 struct cx18 *cx = s->cx; 111 int rc = 0; 112 113 /* check settings */ 114 buf->bytes_used = 0; 115 116 if ((width < 48) || (height < 32)) 117 return -EINVAL; 118 119 buf->vb.size = (width * height * 2); 120 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 121 return -EINVAL; 122 123 /* alloc + fill struct (if changed) */ 124 if (buf->vb.width != width || buf->vb.height != height || 125 buf->vb.field != field || s->pixelformat != pixelformat || 126 buf->tvnorm != cx->std) { 127 128 buf->vb.width = width; 129 buf->vb.height = height; 130 buf->vb.field = field; 131 buf->tvnorm = cx->std; 132 s->pixelformat = pixelformat; 133 134 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 135 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 136 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 137 s->vb_bytes_per_frame = height * 720 * 3 / 2; 138 else 139 s->vb_bytes_per_frame = height * 720 * 2; 140 cx18_dma_free(q, s, buf); 141 } 142 143 if ((buf->vb.baddr != 0) && (buf->vb.bsize < buf->vb.size)) 144 return -EINVAL; 145 146 if (buf->vb.field == 0) 147 buf->vb.field = V4L2_FIELD_INTERLACED; 148 149 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { 150 buf->vb.width = width; 151 buf->vb.height = height; 152 buf->vb.field = field; 153 buf->tvnorm = cx->std; 154 s->pixelformat = pixelformat; 155 156 /* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 157 UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */ 158 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 159 s->vb_bytes_per_frame = height * 720 * 3 / 2; 160 else 161 s->vb_bytes_per_frame = height * 720 * 2; 162 rc = videobuf_iolock(q, &buf->vb, NULL); 163 if (rc != 0) 164 goto fail; 165 } 166 buf->vb.state = VIDEOBUF_PREPARED; 167 return 0; 168 169 fail: 170 cx18_dma_free(q, s, buf); 171 return rc; 172 173 } 174 175 /* VB_MIN_BUFSIZE is lcm(1440 * 480, 1440 * 576) 176 1440 is a single line of 4:2:2 YUV at 720 luma samples wide 177 */ 178 #define VB_MIN_BUFFERS 32 179 #define VB_MIN_BUFSIZE 4147200 180 181 static int buffer_setup(struct videobuf_queue *q, 182 unsigned int *count, unsigned int *size) 183 { 184 struct cx18_stream *s = q->priv_data; 185 struct cx18 *cx = s->cx; 186 187 *size = 2 * cx->cxhdl.width * cx->cxhdl.height; 188 if (*count == 0) 189 *count = VB_MIN_BUFFERS; 190 191 while (*size * *count > VB_MIN_BUFFERS * VB_MIN_BUFSIZE) 192 (*count)--; 193 194 q->field = V4L2_FIELD_INTERLACED; 195 q->last = V4L2_FIELD_INTERLACED; 196 197 return 0; 198 } 199 200 static int buffer_prepare(struct videobuf_queue *q, 201 struct videobuf_buffer *vb, 202 enum v4l2_field field) 203 { 204 struct cx18_videobuf_buffer *buf = 205 container_of(vb, struct cx18_videobuf_buffer, vb); 206 struct cx18_stream *s = q->priv_data; 207 struct cx18 *cx = s->cx; 208 209 return cx18_prepare_buffer(q, s, buf, s->pixelformat, 210 cx->cxhdl.width, cx->cxhdl.height, field); 211 } 212 213 static void buffer_release(struct videobuf_queue *q, 214 struct videobuf_buffer *vb) 215 { 216 struct cx18_videobuf_buffer *buf = 217 container_of(vb, struct cx18_videobuf_buffer, vb); 218 struct cx18_stream *s = q->priv_data; 219 220 cx18_dma_free(q, s, buf); 221 } 222 223 static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) 224 { 225 struct cx18_videobuf_buffer *buf = 226 container_of(vb, struct cx18_videobuf_buffer, vb); 227 struct cx18_stream *s = q->priv_data; 228 229 buf->vb.state = VIDEOBUF_QUEUED; 230 231 list_add_tail(&buf->vb.queue, &s->vb_capture); 232 } 233 234 static const struct videobuf_queue_ops cx18_videobuf_qops = { 235 .buf_setup = buffer_setup, 236 .buf_prepare = buffer_prepare, 237 .buf_queue = buffer_queue, 238 .buf_release = buffer_release, 239 }; 240 241 static void cx18_stream_init(struct cx18 *cx, int type) 242 { 243 struct cx18_stream *s = &cx->streams[type]; 244 245 memset(s, 0, sizeof(*s)); 246 247 /* initialize cx18_stream fields */ 248 s->dvb = NULL; 249 s->cx = cx; 250 s->type = type; 251 s->name = cx18_stream_info[type].name; 252 s->handle = CX18_INVALID_TASK_HANDLE; 253 254 s->dma = cx18_stream_info[type].dma; 255 s->v4l2_dev_caps = cx18_stream_info[type].caps; 256 s->buffers = cx->stream_buffers[type]; 257 s->buf_size = cx->stream_buf_size[type]; 258 INIT_LIST_HEAD(&s->buf_pool); 259 s->bufs_per_mdl = 1; 260 s->mdl_size = s->buf_size * s->bufs_per_mdl; 261 262 init_waitqueue_head(&s->waitq); 263 s->id = -1; 264 spin_lock_init(&s->q_free.lock); 265 cx18_queue_init(&s->q_free); 266 spin_lock_init(&s->q_busy.lock); 267 cx18_queue_init(&s->q_busy); 268 spin_lock_init(&s->q_full.lock); 269 cx18_queue_init(&s->q_full); 270 spin_lock_init(&s->q_idle.lock); 271 cx18_queue_init(&s->q_idle); 272 273 INIT_WORK(&s->out_work_order, cx18_out_work_handler); 274 275 INIT_LIST_HEAD(&s->vb_capture); 276 timer_setup(&s->vb_timeout, cx18_vb_timeout, 0); 277 spin_lock_init(&s->vb_lock); 278 if (type == CX18_ENC_STREAM_TYPE_YUV) { 279 spin_lock_init(&s->vbuf_q_lock); 280 281 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 282 videobuf_queue_vmalloc_init(&s->vbuf_q, &cx18_videobuf_qops, 283 &cx->pci_dev->dev, &s->vbuf_q_lock, 284 V4L2_BUF_TYPE_VIDEO_CAPTURE, 285 V4L2_FIELD_INTERLACED, 286 sizeof(struct cx18_videobuf_buffer), 287 s, &cx->serialize_lock); 288 289 /* Assume the previous pixel default */ 290 s->pixelformat = V4L2_PIX_FMT_NV12_16L16; 291 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2; 292 s->vb_bytes_per_line = 720; 293 } 294 } 295 296 static int cx18_prep_dev(struct cx18 *cx, int type) 297 { 298 struct cx18_stream *s = &cx->streams[type]; 299 u32 cap = cx->v4l2_cap; 300 int num_offset = cx18_stream_info[type].num_offset; 301 int num = cx->instance + cx18_first_minor + num_offset; 302 303 /* 304 * These five fields are always initialized. 305 * For analog capture related streams, if video_dev.v4l2_dev == NULL then the 306 * stream is not in use. 307 * For the TS stream, if dvb == NULL then the stream is not in use. 308 * In those cases no other fields but these four can be used. 309 */ 310 s->video_dev.v4l2_dev = NULL; 311 s->dvb = NULL; 312 s->cx = cx; 313 s->type = type; 314 s->name = cx18_stream_info[type].name; 315 316 /* Check whether the radio is supported */ 317 if (type == CX18_ENC_STREAM_TYPE_RAD && !(cap & V4L2_CAP_RADIO)) 318 return 0; 319 320 /* Check whether VBI is supported */ 321 if (type == CX18_ENC_STREAM_TYPE_VBI && 322 !(cap & (V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE))) 323 return 0; 324 325 /* User explicitly selected 0 buffers for these streams, so don't 326 create them. */ 327 if (cx18_stream_info[type].dma != DMA_NONE && 328 cx->stream_buffers[type] == 0) { 329 CX18_INFO("Disabled %s device\n", cx18_stream_info[type].name); 330 return 0; 331 } 332 333 cx18_stream_init(cx, type); 334 335 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */ 336 if (type == CX18_ENC_STREAM_TYPE_TS) { 337 if (cx->card->hw_all & CX18_HW_DVB) { 338 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL); 339 if (s->dvb == NULL) { 340 CX18_ERR("Couldn't allocate cx18_dvb structure for %s\n", 341 s->name); 342 return -ENOMEM; 343 } 344 } else { 345 /* Don't need buffers for the TS, if there is no DVB */ 346 s->buffers = 0; 347 } 348 } 349 350 if (num_offset == -1) 351 return 0; 352 353 /* initialize the v4l2 video device structure */ 354 snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s", 355 cx->v4l2_dev.name, s->name); 356 357 s->video_dev.num = num; 358 s->video_dev.v4l2_dev = &cx->v4l2_dev; 359 s->video_dev.fops = &cx18_v4l2_enc_fops; 360 s->video_dev.release = video_device_release_empty; 361 if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER) 362 s->video_dev.tvnorms = cx->tuner_std; 363 else 364 s->video_dev.tvnorms = V4L2_STD_ALL; 365 s->video_dev.lock = &cx->serialize_lock; 366 cx18_set_funcs(&s->video_dev); 367 return 0; 368 } 369 370 /* Initialize v4l2 variables and register v4l2 devices */ 371 int cx18_streams_setup(struct cx18 *cx) 372 { 373 int type, ret; 374 375 /* Setup V4L2 Devices */ 376 for (type = 0; type < CX18_MAX_STREAMS; type++) { 377 /* Prepare device */ 378 ret = cx18_prep_dev(cx, type); 379 if (ret < 0) 380 break; 381 382 /* Allocate Stream */ 383 ret = cx18_stream_alloc(&cx->streams[type]); 384 if (ret < 0) 385 break; 386 } 387 if (type == CX18_MAX_STREAMS) 388 return 0; 389 390 /* One or more streams could not be initialized. Clean 'em all up. */ 391 cx18_streams_cleanup(cx, 0); 392 return ret; 393 } 394 395 static int cx18_reg_dev(struct cx18 *cx, int type) 396 { 397 struct cx18_stream *s = &cx->streams[type]; 398 int vfl_type = cx18_stream_info[type].vfl_type; 399 const char *name; 400 int num, ret; 401 402 if (type == CX18_ENC_STREAM_TYPE_TS && s->dvb != NULL) { 403 ret = cx18_dvb_register(s); 404 if (ret < 0) { 405 CX18_ERR("DVB failed to register\n"); 406 return ret; 407 } 408 } 409 410 if (s->video_dev.v4l2_dev == NULL) 411 return 0; 412 413 num = s->video_dev.num; 414 s->video_dev.device_caps = s->v4l2_dev_caps; /* device capabilities */ 415 /* card number + user defined offset + device offset */ 416 if (type != CX18_ENC_STREAM_TYPE_MPG) { 417 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; 418 419 if (s_mpg->video_dev.v4l2_dev) 420 num = s_mpg->video_dev.num 421 + cx18_stream_info[type].num_offset; 422 } 423 video_set_drvdata(&s->video_dev, s); 424 425 /* Register device. First try the desired minor, then any free one. */ 426 ret = video_register_device_no_warn(&s->video_dev, vfl_type, num); 427 if (ret < 0) { 428 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 429 s->name, num); 430 s->video_dev.v4l2_dev = NULL; 431 return ret; 432 } 433 434 name = video_device_node_name(&s->video_dev); 435 436 switch (vfl_type) { 437 case VFL_TYPE_VIDEO: 438 CX18_INFO("Registered device %s for %s (%d x %d.%02d kB)\n", 439 name, s->name, cx->stream_buffers[type], 440 cx->stream_buf_size[type] / 1024, 441 (cx->stream_buf_size[type] * 100 / 1024) % 100); 442 break; 443 444 case VFL_TYPE_RADIO: 445 CX18_INFO("Registered device %s for %s\n", name, s->name); 446 break; 447 448 case VFL_TYPE_VBI: 449 if (cx->stream_buffers[type]) 450 CX18_INFO("Registered device %s for %s (%d x %d bytes)\n", 451 name, s->name, cx->stream_buffers[type], 452 cx->stream_buf_size[type]); 453 else 454 CX18_INFO("Registered device %s for %s\n", 455 name, s->name); 456 break; 457 } 458 459 return 0; 460 } 461 462 /* Register v4l2 devices */ 463 int cx18_streams_register(struct cx18 *cx) 464 { 465 int type; 466 int err; 467 int ret = 0; 468 469 /* Register V4L2 devices */ 470 for (type = 0; type < CX18_MAX_STREAMS; type++) { 471 err = cx18_reg_dev(cx, type); 472 if (err && ret == 0) 473 ret = err; 474 } 475 476 if (ret == 0) 477 return 0; 478 479 /* One or more streams could not be initialized. Clean 'em all up. */ 480 cx18_streams_cleanup(cx, 1); 481 return ret; 482 } 483 484 /* Unregister v4l2 devices */ 485 void cx18_streams_cleanup(struct cx18 *cx, int unregister) 486 { 487 struct video_device *vdev; 488 int type; 489 490 /* Teardown all streams */ 491 for (type = 0; type < CX18_MAX_STREAMS; type++) { 492 493 /* The TS has a cx18_dvb structure, not a video_device */ 494 if (type == CX18_ENC_STREAM_TYPE_TS) { 495 if (cx->streams[type].dvb != NULL) { 496 if (unregister) 497 cx18_dvb_unregister(&cx->streams[type]); 498 kfree(cx->streams[type].dvb); 499 cx->streams[type].dvb = NULL; 500 cx18_stream_free(&cx->streams[type]); 501 } 502 continue; 503 } 504 505 /* No struct video_device, but can have buffers allocated */ 506 if (type == CX18_ENC_STREAM_TYPE_IDX) { 507 /* If the module params didn't inhibit IDX ... */ 508 if (cx->stream_buffers[type] != 0) { 509 cx->stream_buffers[type] = 0; 510 /* 511 * Before calling cx18_stream_free(), 512 * check if the IDX stream was actually set up. 513 * Needed, since the cx18_probe() error path 514 * exits through here as well as normal clean up 515 */ 516 if (cx->streams[type].buffers != 0) 517 cx18_stream_free(&cx->streams[type]); 518 } 519 continue; 520 } 521 522 /* If struct video_device exists, can have buffers allocated */ 523 vdev = &cx->streams[type].video_dev; 524 525 if (vdev->v4l2_dev == NULL) 526 continue; 527 528 if (type == CX18_ENC_STREAM_TYPE_YUV) 529 videobuf_mmap_free(&cx->streams[type].vbuf_q); 530 531 cx18_stream_free(&cx->streams[type]); 532 533 video_unregister_device(vdev); 534 } 535 } 536 537 static void cx18_vbi_setup(struct cx18_stream *s) 538 { 539 struct cx18 *cx = s->cx; 540 int raw = cx18_raw_vbi(cx); 541 u32 data[CX2341X_MBOX_MAX_DATA]; 542 int lines; 543 544 if (cx->is_60hz) { 545 cx->vbi.count = 12; 546 cx->vbi.start[0] = 10; 547 cx->vbi.start[1] = 273; 548 } else { /* PAL/SECAM */ 549 cx->vbi.count = 18; 550 cx->vbi.start[0] = 6; 551 cx->vbi.start[1] = 318; 552 } 553 554 /* setup VBI registers */ 555 if (raw) 556 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi); 557 else 558 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced); 559 560 /* 561 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw 562 * VBI when the first analog capture channel starts, as once it starts 563 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup 564 * (i.e. for the VBI capture channels). We also send it for each 565 * analog capture channel anyway just to make sure we get the proper 566 * behavior 567 */ 568 if (raw) { 569 lines = cx->vbi.count * 2; 570 } else { 571 /* 572 * For 525/60 systems, according to the VIP 2 & BT.656 std: 573 * The EAV RP code's Field bit toggles on line 4, a few lines 574 * after the Vertcal Blank bit has already toggled. 575 * Tell the encoder to capture 21-4+1=18 lines per field, 576 * since we want lines 10 through 21. 577 * 578 * For 625/50 systems, according to the VIP 2 & BT.656 std: 579 * The EAV RP code's Field bit toggles on line 1, a few lines 580 * after the Vertcal Blank bit has already toggled. 581 * (We've actually set the digitizer so that the Field bit 582 * toggles on line 2.) Tell the encoder to capture 23-2+1=22 583 * lines per field, since we want lines 6 through 23. 584 */ 585 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2; 586 } 587 588 data[0] = s->handle; 589 /* Lines per field */ 590 data[1] = (lines / 2) | ((lines / 2) << 16); 591 /* bytes per line */ 592 data[2] = (raw ? VBI_ACTIVE_SAMPLES 593 : (cx->is_60hz ? VBI_HBLANK_SAMPLES_60HZ 594 : VBI_HBLANK_SAMPLES_50HZ)); 595 /* Every X number of frames a VBI interrupt arrives 596 (frames as in 25 or 30 fps) */ 597 data[3] = 1; 598 /* 599 * Set the SAV/EAV RP codes to look for as start/stop points 600 * when in VIP-1.1 mode 601 */ 602 if (raw) { 603 /* 604 * Start codes for beginning of "active" line in vertical blank 605 * 0x20 ( VerticalBlank ) 606 * 0x60 ( EvenField VerticalBlank ) 607 */ 608 data[4] = 0x20602060; 609 /* 610 * End codes for end of "active" raw lines and regular lines 611 * 0x30 ( VerticalBlank HorizontalBlank) 612 * 0x70 ( EvenField VerticalBlank HorizontalBlank) 613 * 0x90 (Task HorizontalBlank) 614 * 0xd0 (Task EvenField HorizontalBlank) 615 */ 616 data[5] = 0x307090d0; 617 } else { 618 /* 619 * End codes for active video, we want data in the hblank region 620 * 0xb0 (Task 0 VerticalBlank HorizontalBlank) 621 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank) 622 * 623 * Since the V bit is only allowed to toggle in the EAV RP code, 624 * just before the first active region line, these two 625 * are problematic: 626 * 0x90 (Task HorizontalBlank) 627 * 0xd0 (Task EvenField HorizontalBlank) 628 * 629 * We have set the digitzer such that we don't have to worry 630 * about these problem codes. 631 */ 632 data[4] = 0xB0F0B0F0; 633 /* 634 * Start codes for beginning of active line in vertical blank 635 * 0xa0 (Task VerticalBlank ) 636 * 0xe0 (Task EvenField VerticalBlank ) 637 */ 638 data[5] = 0xA0E0A0E0; 639 } 640 641 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", 642 data[0], data[1], data[2], data[3], data[4], data[5]); 643 644 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); 645 } 646 647 void cx18_stream_rotate_idx_mdls(struct cx18 *cx) 648 { 649 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 650 struct cx18_mdl *mdl; 651 652 if (!cx18_stream_enabled(s)) 653 return; 654 655 /* Return if the firmware is not running low on MDLs */ 656 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >= 657 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN) 658 return; 659 660 /* Return if there are no MDLs to rotate back to the firmware */ 661 if (atomic_read(&s->q_full.depth) < 2) 662 return; 663 664 /* 665 * Take the oldest IDX MDL still holding data, and discard its index 666 * entries by scheduling the MDL to go back to the firmware 667 */ 668 mdl = cx18_dequeue(s, &s->q_full); 669 if (mdl != NULL) 670 cx18_enqueue(s, mdl, &s->q_free); 671 } 672 673 static 674 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s, 675 struct cx18_mdl *mdl) 676 { 677 struct cx18 *cx = s->cx; 678 struct cx18_queue *q; 679 680 /* Don't give it to the firmware, if we're not running a capture */ 681 if (s->handle == CX18_INVALID_TASK_HANDLE || 682 test_bit(CX18_F_S_STOPPING, &s->s_flags) || 683 !test_bit(CX18_F_S_STREAMING, &s->s_flags)) 684 return cx18_enqueue(s, mdl, &s->q_free); 685 686 q = cx18_enqueue(s, mdl, &s->q_busy); 687 if (q != &s->q_busy) 688 return q; /* The firmware has the max MDLs it can handle */ 689 690 cx18_mdl_sync_for_device(s, mdl); 691 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, 692 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem, 693 s->bufs_per_mdl, mdl->id, s->mdl_size); 694 return q; 695 } 696 697 static 698 void _cx18_stream_load_fw_queue(struct cx18_stream *s) 699 { 700 struct cx18_queue *q; 701 struct cx18_mdl *mdl; 702 703 if (atomic_read(&s->q_free.depth) == 0 || 704 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM) 705 return; 706 707 /* Move from q_free to q_busy notifying the firmware, until the limit */ 708 do { 709 mdl = cx18_dequeue(s, &s->q_free); 710 if (mdl == NULL) 711 break; 712 q = _cx18_stream_put_mdl_fw(s, mdl); 713 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM 714 && q == &s->q_busy); 715 } 716 717 void cx18_out_work_handler(struct work_struct *work) 718 { 719 struct cx18_stream *s = 720 container_of(work, struct cx18_stream, out_work_order); 721 722 _cx18_stream_load_fw_queue(s); 723 } 724 725 static void cx18_stream_configure_mdls(struct cx18_stream *s) 726 { 727 cx18_unload_queues(s); 728 729 switch (s->type) { 730 case CX18_ENC_STREAM_TYPE_YUV: 731 /* 732 * Height should be a multiple of 32 lines. 733 * Set the MDL size to the exact size needed for one frame. 734 * Use enough buffers per MDL to cover the MDL size 735 */ 736 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 737 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2; 738 else 739 s->mdl_size = 720 * s->cx->cxhdl.height * 2; 740 s->bufs_per_mdl = s->mdl_size / s->buf_size; 741 if (s->mdl_size % s->buf_size) 742 s->bufs_per_mdl++; 743 break; 744 case CX18_ENC_STREAM_TYPE_VBI: 745 s->bufs_per_mdl = 1; 746 if (cx18_raw_vbi(s->cx)) { 747 s->mdl_size = (s->cx->is_60hz ? 12 : 18) 748 * 2 * VBI_ACTIVE_SAMPLES; 749 } else { 750 /* 751 * See comment in cx18_vbi_setup() below about the 752 * extra lines we capture in sliced VBI mode due to 753 * the lines on which EAV RP codes toggle. 754 */ 755 s->mdl_size = s->cx->is_60hz 756 ? (21 - 4 + 1) * 2 * VBI_HBLANK_SAMPLES_60HZ 757 : (23 - 2 + 1) * 2 * VBI_HBLANK_SAMPLES_50HZ; 758 } 759 break; 760 default: 761 s->bufs_per_mdl = 1; 762 s->mdl_size = s->buf_size * s->bufs_per_mdl; 763 break; 764 } 765 766 cx18_load_queues(s); 767 } 768 769 int cx18_start_v4l2_encode_stream(struct cx18_stream *s) 770 { 771 u32 data[MAX_MB_ARGUMENTS]; 772 struct cx18 *cx = s->cx; 773 int captype = 0; 774 struct cx18_stream *s_idx; 775 776 if (!cx18_stream_enabled(s)) 777 return -EINVAL; 778 779 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); 780 781 switch (s->type) { 782 case CX18_ENC_STREAM_TYPE_MPG: 783 captype = CAPTURE_CHANNEL_TYPE_MPEG; 784 cx->mpg_data_received = cx->vbi_data_inserted = 0; 785 cx->dualwatch_jiffies = jiffies; 786 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode); 787 cx->search_pack_header = 0; 788 break; 789 790 case CX18_ENC_STREAM_TYPE_IDX: 791 captype = CAPTURE_CHANNEL_TYPE_INDEX; 792 break; 793 case CX18_ENC_STREAM_TYPE_TS: 794 captype = CAPTURE_CHANNEL_TYPE_TS; 795 break; 796 case CX18_ENC_STREAM_TYPE_YUV: 797 captype = CAPTURE_CHANNEL_TYPE_YUV; 798 break; 799 case CX18_ENC_STREAM_TYPE_PCM: 800 captype = CAPTURE_CHANNEL_TYPE_PCM; 801 break; 802 case CX18_ENC_STREAM_TYPE_VBI: 803 #ifdef CX18_ENCODER_PARSES_SLICED 804 captype = cx18_raw_vbi(cx) ? 805 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; 806 #else 807 /* 808 * Currently we set things up so that Sliced VBI from the 809 * digitizer is handled as Raw VBI by the encoder 810 */ 811 captype = CAPTURE_CHANNEL_TYPE_VBI; 812 #endif 813 cx->vbi.frame = 0; 814 cx->vbi.inserted_frame = 0; 815 memset(cx->vbi.sliced_mpeg_size, 816 0, sizeof(cx->vbi.sliced_mpeg_size)); 817 break; 818 default: 819 return -EINVAL; 820 } 821 822 /* Clear Streamoff flags in case left from last capture */ 823 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); 824 825 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); 826 s->handle = data[0]; 827 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); 828 829 /* 830 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and 831 * set up all the parameters, as it is not obvious which parameters the 832 * firmware shares across capture channel types and which it does not. 833 * 834 * Some of the cx18_vapi() calls below apply to only certain capture 835 * channel types. We're hoping there's no harm in calling most of them 836 * anyway, as long as the values are all consistent. Setting some 837 * shared parameters will have no effect once an analog capture channel 838 * has started streaming. 839 */ 840 if (captype != CAPTURE_CHANNEL_TYPE_TS) { 841 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); 842 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); 843 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); 844 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); 845 846 /* 847 * Audio related reset according to 848 * Documentation/driver-api/media/drivers/cx2341x-devel.rst 849 */ 850 if (atomic_read(&cx->ana_capturing) == 0) 851 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, 852 s->handle, 12); 853 854 /* 855 * Number of lines for Field 1 & Field 2 according to 856 * Documentation/driver-api/media/drivers/cx2341x-devel.rst 857 * Field 1 is 312 for 625 line systems in BT.656 858 * Field 2 is 313 for 625 line systems in BT.656 859 */ 860 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, 861 s->handle, 312, 313); 862 863 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) 864 cx18_vbi_setup(s); 865 866 /* 867 * Select to receive I, P, and B frame index entries, if the 868 * index stream is enabled. Otherwise disable index entry 869 * generation. 870 */ 871 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 872 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2, 873 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0); 874 875 /* Call out to the common CX2341x API setup for user controls */ 876 cx->cxhdl.priv = s; 877 cx2341x_handler_setup(&cx->cxhdl); 878 879 /* 880 * When starting a capture and we're set for radio, 881 * ensure the video is muted, despite the user control. 882 */ 883 if (!cx->cxhdl.video_mute && 884 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) 885 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle, 886 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1); 887 888 /* Enable the Video Format Converter for UYVY 4:2:2 support, 889 * rather than the default HM12 Macroblovk 4:2:0 support. 890 */ 891 if (captype == CAPTURE_CHANNEL_TYPE_YUV) { 892 if (s->pixelformat == V4L2_PIX_FMT_UYVY) 893 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 894 s->handle, 1); 895 else 896 /* If in doubt, default to HM12 */ 897 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 898 s->handle, 0); 899 } 900 } 901 902 if (atomic_read(&cx->tot_capturing) == 0) { 903 cx2341x_handler_set_busy(&cx->cxhdl, 1); 904 clear_bit(CX18_F_I_EOS, &cx->i_flags); 905 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); 906 } 907 908 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, 909 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, 910 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); 911 912 /* Init all the cpu_mdls for this stream */ 913 cx18_stream_configure_mdls(s); 914 _cx18_stream_load_fw_queue(s); 915 916 /* begin_capture */ 917 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { 918 CX18_DEBUG_WARN("Error starting capture!\n"); 919 /* Ensure we're really not capturing before releasing MDLs */ 920 set_bit(CX18_F_S_STOPPING, &s->s_flags); 921 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 922 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); 923 else 924 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 925 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 926 /* FIXME - CX18_F_S_STREAMOFF as well? */ 927 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 928 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 929 s->handle = CX18_INVALID_TASK_HANDLE; 930 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 931 if (atomic_read(&cx->tot_capturing) == 0) { 932 set_bit(CX18_F_I_EOS, &cx->i_flags); 933 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 934 } 935 return -EINVAL; 936 } 937 938 /* you're live! sit back and await interrupts :) */ 939 if (captype != CAPTURE_CHANNEL_TYPE_TS) 940 atomic_inc(&cx->ana_capturing); 941 atomic_inc(&cx->tot_capturing); 942 return 0; 943 } 944 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream); 945 946 void cx18_stop_all_captures(struct cx18 *cx) 947 { 948 int i; 949 950 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { 951 struct cx18_stream *s = &cx->streams[i]; 952 953 if (!cx18_stream_enabled(s)) 954 continue; 955 if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) 956 cx18_stop_v4l2_encode_stream(s, 0); 957 } 958 } 959 960 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) 961 { 962 struct cx18 *cx = s->cx; 963 964 if (!cx18_stream_enabled(s)) 965 return -EINVAL; 966 967 /* This function assumes that you are allowed to stop the capture 968 and that we are actually capturing */ 969 970 CX18_DEBUG_INFO("Stop Capture\n"); 971 972 if (atomic_read(&cx->tot_capturing) == 0) 973 return 0; 974 975 set_bit(CX18_F_S_STOPPING, &s->s_flags); 976 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 977 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); 978 else 979 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 980 981 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { 982 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); 983 } 984 985 if (s->type != CX18_ENC_STREAM_TYPE_TS) 986 atomic_dec(&cx->ana_capturing); 987 atomic_dec(&cx->tot_capturing); 988 989 /* Clear capture and no-read bits */ 990 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 991 992 /* Tell the CX23418 it can't use our buffers anymore */ 993 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 994 995 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 996 s->handle = CX18_INVALID_TASK_HANDLE; 997 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 998 999 if (atomic_read(&cx->tot_capturing) > 0) 1000 return 0; 1001 1002 cx2341x_handler_set_busy(&cx->cxhdl, 0); 1003 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 1004 wake_up(&s->waitq); 1005 1006 return 0; 1007 } 1008 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream); 1009 1010 u32 cx18_find_handle(struct cx18 *cx) 1011 { 1012 int i; 1013 1014 /* find first available handle to be used for global settings */ 1015 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1016 struct cx18_stream *s = &cx->streams[i]; 1017 1018 if (s->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE)) 1019 return s->handle; 1020 } 1021 return CX18_INVALID_TASK_HANDLE; 1022 } 1023 1024 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) 1025 { 1026 int i; 1027 struct cx18_stream *s; 1028 1029 if (handle == CX18_INVALID_TASK_HANDLE) 1030 return NULL; 1031 1032 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1033 s = &cx->streams[i]; 1034 if (s->handle != handle) 1035 continue; 1036 if (cx18_stream_enabled(s)) 1037 return s; 1038 } 1039 return NULL; 1040 } 1041