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 }; 33 34 static const struct v4l2_file_operations cx18_v4l2_enc_yuv_fops = { 35 .owner = THIS_MODULE, 36 .open = cx18_v4l2_open, 37 .unlocked_ioctl = video_ioctl2, 38 .release = cx18_v4l2_close, 39 .poll = vb2_fop_poll, 40 .read = vb2_fop_read, 41 .mmap = vb2_fop_mmap, 42 }; 43 44 /* offset from 0 to register ts v4l2 minors on */ 45 #define CX18_V4L2_ENC_TS_OFFSET 16 46 /* offset from 0 to register pcm v4l2 minors on */ 47 #define CX18_V4L2_ENC_PCM_OFFSET 24 48 /* offset from 0 to register yuv v4l2 minors on */ 49 #define CX18_V4L2_ENC_YUV_OFFSET 32 50 51 static struct { 52 const char *name; 53 int vfl_type; 54 int num_offset; 55 int dma; 56 u32 caps; 57 } cx18_stream_info[] = { 58 { /* CX18_ENC_STREAM_TYPE_MPG */ 59 "encoder MPEG", 60 VFL_TYPE_VIDEO, 0, 61 DMA_FROM_DEVICE, 62 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 63 V4L2_CAP_AUDIO | V4L2_CAP_TUNER 64 }, 65 { /* CX18_ENC_STREAM_TYPE_TS */ 66 "TS", 67 VFL_TYPE_VIDEO, -1, 68 DMA_FROM_DEVICE, 69 }, 70 { /* CX18_ENC_STREAM_TYPE_YUV */ 71 "encoder YUV", 72 VFL_TYPE_VIDEO, CX18_V4L2_ENC_YUV_OFFSET, 73 DMA_FROM_DEVICE, 74 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 75 V4L2_CAP_STREAMING | V4L2_CAP_AUDIO | V4L2_CAP_TUNER 76 }, 77 { /* CX18_ENC_STREAM_TYPE_VBI */ 78 "encoder VBI", 79 VFL_TYPE_VBI, 0, 80 DMA_FROM_DEVICE, 81 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | 82 V4L2_CAP_READWRITE | V4L2_CAP_AUDIO | V4L2_CAP_TUNER 83 }, 84 { /* CX18_ENC_STREAM_TYPE_PCM */ 85 "encoder PCM audio", 86 VFL_TYPE_VIDEO, CX18_V4L2_ENC_PCM_OFFSET, 87 DMA_FROM_DEVICE, 88 V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 89 }, 90 { /* CX18_ENC_STREAM_TYPE_IDX */ 91 "encoder IDX", 92 VFL_TYPE_VIDEO, -1, 93 DMA_FROM_DEVICE, 94 }, 95 { /* CX18_ENC_STREAM_TYPE_RAD */ 96 "encoder radio", 97 VFL_TYPE_RADIO, 0, 98 DMA_NONE, 99 V4L2_CAP_RADIO | V4L2_CAP_TUNER 100 }, 101 }; 102 103 static int cx18_queue_setup(struct vb2_queue *vq, 104 unsigned int *nbuffers, unsigned int *nplanes, 105 unsigned int sizes[], struct device *alloc_devs[]) 106 { 107 unsigned int q_num_bufs = vb2_get_num_buffers(vq); 108 struct cx18_stream *s = vb2_get_drv_priv(vq); 109 struct cx18 *cx = s->cx; 110 unsigned int szimage; 111 112 /* 113 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 114 * UYUV YUV size is (Y=(h*720) + UV=(h*(720))) 115 */ 116 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 117 szimage = cx->cxhdl.height * 720 * 3 / 2; 118 else 119 szimage = cx->cxhdl.height * 720 * 2; 120 121 /* 122 * Let's request at least three buffers: two for the 123 * DMA engine and one for userspace. 124 */ 125 if (q_num_bufs + *nbuffers < 3) 126 *nbuffers = 3 - q_num_bufs; 127 128 if (*nplanes) { 129 if (*nplanes != 1 || sizes[0] < szimage) 130 return -EINVAL; 131 return 0; 132 } 133 134 sizes[0] = szimage; 135 *nplanes = 1; 136 return 0; 137 } 138 139 static void cx18_buf_queue(struct vb2_buffer *vb) 140 { 141 struct cx18_stream *s = vb2_get_drv_priv(vb->vb2_queue); 142 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 143 struct cx18_vb2_buffer *buf = 144 container_of(vbuf, struct cx18_vb2_buffer, vb); 145 unsigned long flags; 146 147 spin_lock_irqsave(&s->vb_lock, flags); 148 list_add_tail(&buf->list, &s->vb_capture); 149 spin_unlock_irqrestore(&s->vb_lock, flags); 150 } 151 152 static int cx18_buf_prepare(struct vb2_buffer *vb) 153 { 154 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 155 struct cx18_stream *s = vb2_get_drv_priv(vb->vb2_queue); 156 struct cx18 *cx = s->cx; 157 unsigned int size; 158 159 /* 160 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2))) 161 * UYUV YUV size is (Y=(h*720) + UV=(h*(720))) 162 */ 163 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 164 size = cx->cxhdl.height * 720 * 3 / 2; 165 else 166 size = cx->cxhdl.height * 720 * 2; 167 168 if (vb2_plane_size(vb, 0) < size) 169 return -EINVAL; 170 vb2_set_plane_payload(vb, 0, size); 171 vbuf->field = V4L2_FIELD_INTERLACED; 172 return 0; 173 } 174 175 void cx18_clear_queue(struct cx18_stream *s, enum vb2_buffer_state state) 176 { 177 while (!list_empty(&s->vb_capture)) { 178 struct cx18_vb2_buffer *buf; 179 180 buf = list_first_entry(&s->vb_capture, 181 struct cx18_vb2_buffer, list); 182 list_del(&buf->list); 183 vb2_buffer_done(&buf->vb.vb2_buf, state); 184 } 185 } 186 187 static int cx18_start_streaming(struct vb2_queue *vq, unsigned int count) 188 { 189 struct v4l2_fh *owner = vq->owner; 190 struct cx18_stream *s = vb2_get_drv_priv(vq); 191 unsigned long flags; 192 int rc; 193 194 if (WARN_ON(!owner)) { 195 rc = -EIO; 196 goto clear_queue; 197 } 198 199 s->sequence = 0; 200 rc = cx18_start_capture(fh2id(owner)); 201 if (!rc) { 202 /* Establish a buffer timeout */ 203 mod_timer(&s->vb_timeout, msecs_to_jiffies(2000) + jiffies); 204 return 0; 205 } 206 207 clear_queue: 208 spin_lock_irqsave(&s->vb_lock, flags); 209 cx18_clear_queue(s, VB2_BUF_STATE_QUEUED); 210 spin_unlock_irqrestore(&s->vb_lock, flags); 211 return rc; 212 } 213 214 static void cx18_stop_streaming(struct vb2_queue *vq) 215 { 216 struct cx18_stream *s = vb2_get_drv_priv(vq); 217 unsigned long flags; 218 219 cx18_stop_capture(s, 0); 220 timer_delete_sync(&s->vb_timeout); 221 spin_lock_irqsave(&s->vb_lock, flags); 222 cx18_clear_queue(s, VB2_BUF_STATE_ERROR); 223 spin_unlock_irqrestore(&s->vb_lock, flags); 224 } 225 226 static const struct vb2_ops cx18_vb2_qops = { 227 .queue_setup = cx18_queue_setup, 228 .buf_queue = cx18_buf_queue, 229 .buf_prepare = cx18_buf_prepare, 230 .start_streaming = cx18_start_streaming, 231 .stop_streaming = cx18_stop_streaming, 232 .wait_prepare = vb2_ops_wait_prepare, 233 .wait_finish = vb2_ops_wait_finish, 234 }; 235 236 static int cx18_stream_init(struct cx18 *cx, int type) 237 { 238 struct cx18_stream *s = &cx->streams[type]; 239 int err = 0; 240 241 memset(s, 0, sizeof(*s)); 242 243 /* initialize cx18_stream fields */ 244 s->dvb = NULL; 245 s->cx = cx; 246 s->type = type; 247 s->name = cx18_stream_info[type].name; 248 s->handle = CX18_INVALID_TASK_HANDLE; 249 250 s->dma = cx18_stream_info[type].dma; 251 s->v4l2_dev_caps = cx18_stream_info[type].caps; 252 s->buffers = cx->stream_buffers[type]; 253 s->buf_size = cx->stream_buf_size[type]; 254 INIT_LIST_HEAD(&s->buf_pool); 255 s->bufs_per_mdl = 1; 256 s->mdl_size = s->buf_size * s->bufs_per_mdl; 257 258 init_waitqueue_head(&s->waitq); 259 s->id = -1; 260 spin_lock_init(&s->q_free.lock); 261 cx18_queue_init(&s->q_free); 262 spin_lock_init(&s->q_busy.lock); 263 cx18_queue_init(&s->q_busy); 264 spin_lock_init(&s->q_full.lock); 265 cx18_queue_init(&s->q_full); 266 spin_lock_init(&s->q_idle.lock); 267 cx18_queue_init(&s->q_idle); 268 269 INIT_WORK(&s->out_work_order, cx18_out_work_handler); 270 271 INIT_LIST_HEAD(&s->vb_capture); 272 timer_setup(&s->vb_timeout, cx18_vb_timeout, 0); 273 spin_lock_init(&s->vb_lock); 274 275 if (type == CX18_ENC_STREAM_TYPE_YUV) { 276 s->vb_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 277 278 /* Assume the previous pixel default */ 279 s->pixelformat = V4L2_PIX_FMT_NV12_16L16; 280 s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2; 281 s->vb_bytes_per_line = 720; 282 283 s->vidq.io_modes = VB2_READ | VB2_MMAP | VB2_DMABUF; 284 s->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 285 s->vidq.drv_priv = s; 286 s->vidq.buf_struct_size = sizeof(struct cx18_vb2_buffer); 287 s->vidq.ops = &cx18_vb2_qops; 288 s->vidq.mem_ops = &vb2_vmalloc_memops; 289 s->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 290 s->vidq.min_queued_buffers = 2; 291 s->vidq.gfp_flags = GFP_DMA32; 292 s->vidq.dev = &cx->pci_dev->dev; 293 s->vidq.lock = &cx->serialize_lock; 294 295 err = vb2_queue_init(&s->vidq); 296 if (err) 297 v4l2_err(&cx->v4l2_dev, "cannot init vb2 queue\n"); 298 s->video_dev.queue = &s->vidq; 299 } 300 return err; 301 } 302 303 static int cx18_prep_dev(struct cx18 *cx, int type) 304 { 305 struct cx18_stream *s = &cx->streams[type]; 306 u32 cap = cx->v4l2_cap; 307 int num_offset = cx18_stream_info[type].num_offset; 308 int num = cx->instance + cx18_first_minor + num_offset; 309 int err; 310 311 /* 312 * These five fields are always initialized. 313 * For analog capture related streams, if video_dev.v4l2_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.v4l2_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 != 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 err = cx18_stream_init(cx, type); 342 if (err) 343 return err; 344 345 /* Allocate the cx18_dvb struct only for the TS on cards with DTV */ 346 if (type == CX18_ENC_STREAM_TYPE_TS) { 347 if (cx->card->hw_all & CX18_HW_DVB) { 348 s->dvb = kzalloc(sizeof(struct cx18_dvb), GFP_KERNEL); 349 if (s->dvb == NULL) { 350 CX18_ERR("Couldn't allocate cx18_dvb structure for %s\n", 351 s->name); 352 return -ENOMEM; 353 } 354 } else { 355 /* Don't need buffers for the TS, if there is no DVB */ 356 s->buffers = 0; 357 } 358 } 359 360 if (num_offset == -1) 361 return 0; 362 363 /* initialize the v4l2 video device structure */ 364 snprintf(s->video_dev.name, sizeof(s->video_dev.name), "%s %s", 365 cx->v4l2_dev.name, s->name); 366 367 s->video_dev.num = num; 368 s->video_dev.v4l2_dev = &cx->v4l2_dev; 369 if (type == CX18_ENC_STREAM_TYPE_YUV) 370 s->video_dev.fops = &cx18_v4l2_enc_yuv_fops; 371 else 372 s->video_dev.fops = &cx18_v4l2_enc_fops; 373 s->video_dev.release = video_device_release_empty; 374 if (cx->card->video_inputs->video_type == CX18_CARD_INPUT_VID_TUNER) 375 s->video_dev.tvnorms = cx->tuner_std; 376 else 377 s->video_dev.tvnorms = V4L2_STD_ALL; 378 s->video_dev.lock = &cx->serialize_lock; 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.v4l2_dev == NULL) 424 return 0; 425 426 num = s->video_dev.num; 427 s->video_dev.device_caps = s->v4l2_dev_caps; /* device capabilities */ 428 /* card number + user defined offset + device offset */ 429 if (type != CX18_ENC_STREAM_TYPE_MPG) { 430 struct cx18_stream *s_mpg = &cx->streams[CX18_ENC_STREAM_TYPE_MPG]; 431 432 if (s_mpg->video_dev.v4l2_dev) 433 num = s_mpg->video_dev.num 434 + cx18_stream_info[type].num_offset; 435 } 436 video_set_drvdata(&s->video_dev, s); 437 438 /* Register device. First try the desired minor, then any free one. */ 439 ret = video_register_device_no_warn(&s->video_dev, vfl_type, num); 440 if (ret < 0) { 441 CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 442 s->name, num); 443 s->video_dev.v4l2_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_VIDEO: 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 (%d x %d bytes)\n", 464 name, s->name, cx->stream_buffers[type], 465 cx->stream_buf_size[type]); 466 else 467 CX18_INFO("Registered device %s for %s\n", 468 name, s->name); 469 break; 470 } 471 472 return 0; 473 } 474 475 /* Register v4l2 devices */ 476 int cx18_streams_register(struct cx18 *cx) 477 { 478 int type; 479 int err; 480 int ret = 0; 481 482 /* Register V4L2 devices */ 483 for (type = 0; type < CX18_MAX_STREAMS; type++) { 484 err = cx18_reg_dev(cx, type); 485 if (err && ret == 0) 486 ret = err; 487 } 488 489 if (ret == 0) 490 return 0; 491 492 /* One or more streams could not be initialized. Clean 'em all up. */ 493 cx18_streams_cleanup(cx, 1); 494 return ret; 495 } 496 497 /* Unregister v4l2 devices */ 498 void cx18_streams_cleanup(struct cx18 *cx, int unregister) 499 { 500 struct video_device *vdev; 501 int type; 502 503 /* Teardown all streams */ 504 for (type = 0; type < CX18_MAX_STREAMS; type++) { 505 506 /* The TS has a cx18_dvb structure, not a video_device */ 507 if (type == CX18_ENC_STREAM_TYPE_TS) { 508 if (cx->streams[type].dvb != NULL) { 509 if (unregister) 510 cx18_dvb_unregister(&cx->streams[type]); 511 kfree(cx->streams[type].dvb); 512 cx->streams[type].dvb = NULL; 513 cx18_stream_free(&cx->streams[type]); 514 } 515 continue; 516 } 517 518 /* No struct video_device, but can have buffers allocated */ 519 if (type == CX18_ENC_STREAM_TYPE_IDX) { 520 /* If the module params didn't inhibit IDX ... */ 521 if (cx->stream_buffers[type] != 0) { 522 cx->stream_buffers[type] = 0; 523 /* 524 * Before calling cx18_stream_free(), 525 * check if the IDX stream was actually set up. 526 * Needed, since the cx18_probe() error path 527 * exits through here as well as normal clean up 528 */ 529 if (cx->streams[type].buffers != 0) 530 cx18_stream_free(&cx->streams[type]); 531 } 532 continue; 533 } 534 535 /* If struct video_device exists, can have buffers allocated */ 536 vdev = &cx->streams[type].video_dev; 537 538 if (vdev->v4l2_dev == NULL) 539 continue; 540 541 cx18_stream_free(&cx->streams[type]); 542 543 if (type == CX18_ENC_STREAM_TYPE_YUV) 544 vb2_video_unregister_device(vdev); 545 else 546 video_unregister_device(vdev); 547 } 548 } 549 550 static void cx18_vbi_setup(struct cx18_stream *s) 551 { 552 struct cx18 *cx = s->cx; 553 int raw = cx18_raw_vbi(cx); 554 u32 data[CX2341X_MBOX_MAX_DATA]; 555 int lines; 556 557 if (cx->is_60hz) { 558 cx->vbi.count = 12; 559 cx->vbi.start[0] = 10; 560 cx->vbi.start[1] = 273; 561 } else { /* PAL/SECAM */ 562 cx->vbi.count = 18; 563 cx->vbi.start[0] = 6; 564 cx->vbi.start[1] = 318; 565 } 566 567 /* setup VBI registers */ 568 if (raw) 569 v4l2_subdev_call(cx->sd_av, vbi, s_raw_fmt, &cx->vbi.in.fmt.vbi); 570 else 571 v4l2_subdev_call(cx->sd_av, vbi, s_sliced_fmt, &cx->vbi.in.fmt.sliced); 572 573 /* 574 * Send the CX18_CPU_SET_RAW_VBI_PARAM API command to setup Encoder Raw 575 * VBI when the first analog capture channel starts, as once it starts 576 * (e.g. MPEG), we can't effect any change in the Encoder Raw VBI setup 577 * (i.e. for the VBI capture channels). We also send it for each 578 * analog capture channel anyway just to make sure we get the proper 579 * behavior 580 */ 581 if (raw) { 582 lines = cx->vbi.count * 2; 583 } else { 584 /* 585 * For 525/60 systems, according to the VIP 2 & BT.656 std: 586 * The EAV RP code's Field bit toggles on line 4, a few lines 587 * after the Vertcal Blank bit has already toggled. 588 * Tell the encoder to capture 21-4+1=18 lines per field, 589 * since we want lines 10 through 21. 590 * 591 * For 625/50 systems, according to the VIP 2 & BT.656 std: 592 * The EAV RP code's Field bit toggles on line 1, a few lines 593 * after the Vertcal Blank bit has already toggled. 594 * (We've actually set the digitizer so that the Field bit 595 * toggles on line 2.) Tell the encoder to capture 23-2+1=22 596 * lines per field, since we want lines 6 through 23. 597 */ 598 lines = cx->is_60hz ? (21 - 4 + 1) * 2 : (23 - 2 + 1) * 2; 599 } 600 601 data[0] = s->handle; 602 /* Lines per field */ 603 data[1] = (lines / 2) | ((lines / 2) << 16); 604 /* bytes per line */ 605 data[2] = (raw ? VBI_ACTIVE_SAMPLES 606 : (cx->is_60hz ? VBI_HBLANK_SAMPLES_60HZ 607 : VBI_HBLANK_SAMPLES_50HZ)); 608 /* Every X number of frames a VBI interrupt arrives 609 (frames as in 25 or 30 fps) */ 610 data[3] = 1; 611 /* 612 * Set the SAV/EAV RP codes to look for as start/stop points 613 * when in VIP-1.1 mode 614 */ 615 if (raw) { 616 /* 617 * Start codes for beginning of "active" line in vertical blank 618 * 0x20 ( VerticalBlank ) 619 * 0x60 ( EvenField VerticalBlank ) 620 */ 621 data[4] = 0x20602060; 622 /* 623 * End codes for end of "active" raw lines and regular lines 624 * 0x30 ( VerticalBlank HorizontalBlank) 625 * 0x70 ( EvenField VerticalBlank HorizontalBlank) 626 * 0x90 (Task HorizontalBlank) 627 * 0xd0 (Task EvenField HorizontalBlank) 628 */ 629 data[5] = 0x307090d0; 630 } else { 631 /* 632 * End codes for active video, we want data in the hblank region 633 * 0xb0 (Task 0 VerticalBlank HorizontalBlank) 634 * 0xf0 (Task EvenField VerticalBlank HorizontalBlank) 635 * 636 * Since the V bit is only allowed to toggle in the EAV RP code, 637 * just before the first active region line, these two 638 * are problematic: 639 * 0x90 (Task HorizontalBlank) 640 * 0xd0 (Task EvenField HorizontalBlank) 641 * 642 * We have set the digitzer such that we don't have to worry 643 * about these problem codes. 644 */ 645 data[4] = 0xB0F0B0F0; 646 /* 647 * Start codes for beginning of active line in vertical blank 648 * 0xa0 (Task VerticalBlank ) 649 * 0xe0 (Task EvenField VerticalBlank ) 650 */ 651 data[5] = 0xA0E0A0E0; 652 } 653 654 CX18_DEBUG_INFO("Setup VBI h: %d lines %x bpl %d fr %d %x %x\n", 655 data[0], data[1], data[2], data[3], data[4], data[5]); 656 657 cx18_api(cx, CX18_CPU_SET_RAW_VBI_PARAM, 6, data); 658 } 659 660 void cx18_stream_rotate_idx_mdls(struct cx18 *cx) 661 { 662 struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 663 struct cx18_mdl *mdl; 664 665 if (!cx18_stream_enabled(s)) 666 return; 667 668 /* Return if the firmware is not running low on MDLs */ 669 if ((atomic_read(&s->q_free.depth) + atomic_read(&s->q_busy.depth)) >= 670 CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN) 671 return; 672 673 /* Return if there are no MDLs to rotate back to the firmware */ 674 if (atomic_read(&s->q_full.depth) < 2) 675 return; 676 677 /* 678 * Take the oldest IDX MDL still holding data, and discard its index 679 * entries by scheduling the MDL to go back to the firmware 680 */ 681 mdl = cx18_dequeue(s, &s->q_full); 682 if (mdl != NULL) 683 cx18_enqueue(s, mdl, &s->q_free); 684 } 685 686 static 687 struct cx18_queue *_cx18_stream_put_mdl_fw(struct cx18_stream *s, 688 struct cx18_mdl *mdl) 689 { 690 struct cx18 *cx = s->cx; 691 struct cx18_queue *q; 692 693 /* Don't give it to the firmware, if we're not running a capture */ 694 if (s->handle == CX18_INVALID_TASK_HANDLE || 695 test_bit(CX18_F_S_STOPPING, &s->s_flags) || 696 !test_bit(CX18_F_S_STREAMING, &s->s_flags)) 697 return cx18_enqueue(s, mdl, &s->q_free); 698 699 q = cx18_enqueue(s, mdl, &s->q_busy); 700 if (q != &s->q_busy) 701 return q; /* The firmware has the max MDLs it can handle */ 702 703 cx18_mdl_sync_for_device(s, mdl); 704 cx18_vapi(cx, CX18_CPU_DE_SET_MDL, 5, s->handle, 705 (void __iomem *) &cx->scb->cpu_mdl[mdl->id] - cx->enc_mem, 706 s->bufs_per_mdl, mdl->id, s->mdl_size); 707 return q; 708 } 709 710 static 711 void _cx18_stream_load_fw_queue(struct cx18_stream *s) 712 { 713 struct cx18_queue *q; 714 struct cx18_mdl *mdl; 715 716 if (atomic_read(&s->q_free.depth) == 0 || 717 atomic_read(&s->q_busy.depth) >= CX18_MAX_FW_MDLS_PER_STREAM) 718 return; 719 720 /* Move from q_free to q_busy notifying the firmware, until the limit */ 721 do { 722 mdl = cx18_dequeue(s, &s->q_free); 723 if (mdl == NULL) 724 break; 725 q = _cx18_stream_put_mdl_fw(s, mdl); 726 } while (atomic_read(&s->q_busy.depth) < CX18_MAX_FW_MDLS_PER_STREAM 727 && q == &s->q_busy); 728 } 729 730 void cx18_out_work_handler(struct work_struct *work) 731 { 732 struct cx18_stream *s = 733 container_of(work, struct cx18_stream, out_work_order); 734 735 _cx18_stream_load_fw_queue(s); 736 } 737 738 static void cx18_stream_configure_mdls(struct cx18_stream *s) 739 { 740 cx18_unload_queues(s); 741 742 switch (s->type) { 743 case CX18_ENC_STREAM_TYPE_YUV: 744 /* 745 * Height should be a multiple of 32 lines. 746 * Set the MDL size to the exact size needed for one frame. 747 * Use enough buffers per MDL to cover the MDL size 748 */ 749 if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) 750 s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2; 751 else 752 s->mdl_size = 720 * s->cx->cxhdl.height * 2; 753 s->bufs_per_mdl = s->mdl_size / s->buf_size; 754 if (s->mdl_size % s->buf_size) 755 s->bufs_per_mdl++; 756 break; 757 case CX18_ENC_STREAM_TYPE_VBI: 758 s->bufs_per_mdl = 1; 759 if (cx18_raw_vbi(s->cx)) { 760 s->mdl_size = (s->cx->is_60hz ? 12 : 18) 761 * 2 * VBI_ACTIVE_SAMPLES; 762 } else { 763 /* 764 * See comment in cx18_vbi_setup() below about the 765 * extra lines we capture in sliced VBI mode due to 766 * the lines on which EAV RP codes toggle. 767 */ 768 s->mdl_size = s->cx->is_60hz 769 ? (21 - 4 + 1) * 2 * VBI_HBLANK_SAMPLES_60HZ 770 : (23 - 2 + 1) * 2 * VBI_HBLANK_SAMPLES_50HZ; 771 } 772 break; 773 default: 774 s->bufs_per_mdl = 1; 775 s->mdl_size = s->buf_size * s->bufs_per_mdl; 776 break; 777 } 778 779 cx18_load_queues(s); 780 } 781 782 int cx18_start_v4l2_encode_stream(struct cx18_stream *s) 783 { 784 u32 data[MAX_MB_ARGUMENTS]; 785 struct cx18 *cx = s->cx; 786 int captype = 0; 787 struct cx18_stream *s_idx; 788 789 if (!cx18_stream_enabled(s)) 790 return -EINVAL; 791 792 CX18_DEBUG_INFO("Start encoder stream %s\n", s->name); 793 794 switch (s->type) { 795 case CX18_ENC_STREAM_TYPE_MPG: 796 captype = CAPTURE_CHANNEL_TYPE_MPEG; 797 cx->mpg_data_received = cx->vbi_data_inserted = 0; 798 cx->dualwatch_jiffies = jiffies; 799 cx->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(cx->cxhdl.audio_mode); 800 cx->search_pack_header = 0; 801 break; 802 803 case CX18_ENC_STREAM_TYPE_IDX: 804 captype = CAPTURE_CHANNEL_TYPE_INDEX; 805 break; 806 case CX18_ENC_STREAM_TYPE_TS: 807 captype = CAPTURE_CHANNEL_TYPE_TS; 808 break; 809 case CX18_ENC_STREAM_TYPE_YUV: 810 captype = CAPTURE_CHANNEL_TYPE_YUV; 811 break; 812 case CX18_ENC_STREAM_TYPE_PCM: 813 captype = CAPTURE_CHANNEL_TYPE_PCM; 814 break; 815 case CX18_ENC_STREAM_TYPE_VBI: 816 #ifdef CX18_ENCODER_PARSES_SLICED 817 captype = cx18_raw_vbi(cx) ? 818 CAPTURE_CHANNEL_TYPE_VBI : CAPTURE_CHANNEL_TYPE_SLICED_VBI; 819 #else 820 /* 821 * Currently we set things up so that Sliced VBI from the 822 * digitizer is handled as Raw VBI by the encoder 823 */ 824 captype = CAPTURE_CHANNEL_TYPE_VBI; 825 #endif 826 cx->vbi.frame = 0; 827 cx->vbi.inserted_frame = 0; 828 memset(cx->vbi.sliced_mpeg_size, 829 0, sizeof(cx->vbi.sliced_mpeg_size)); 830 break; 831 default: 832 return -EINVAL; 833 } 834 835 /* Clear Streamoff flags in case left from last capture */ 836 clear_bit(CX18_F_S_STREAMOFF, &s->s_flags); 837 838 cx18_vapi_result(cx, data, CX18_CREATE_TASK, 1, CPU_CMD_MASK_CAPTURE); 839 s->handle = data[0]; 840 cx18_vapi(cx, CX18_CPU_SET_CHANNEL_TYPE, 2, s->handle, captype); 841 842 /* 843 * For everything but CAPTURE_CHANNEL_TYPE_TS, play it safe and 844 * set up all the parameters, as it is not obvious which parameters the 845 * firmware shares across capture channel types and which it does not. 846 * 847 * Some of the cx18_vapi() calls below apply to only certain capture 848 * channel types. We're hoping there's no harm in calling most of them 849 * anyway, as long as the values are all consistent. Setting some 850 * shared parameters will have no effect once an analog capture channel 851 * has started streaming. 852 */ 853 if (captype != CAPTURE_CHANNEL_TYPE_TS) { 854 cx18_vapi(cx, CX18_CPU_SET_VER_CROP_LINE, 2, s->handle, 0); 855 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 3, 1); 856 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 8, 0); 857 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1); 858 859 /* 860 * Audio related reset according to 861 * Documentation/driver-api/media/drivers/cx2341x-devel.rst 862 */ 863 if (atomic_read(&cx->ana_capturing) == 0) 864 cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2, 865 s->handle, 12); 866 867 /* 868 * Number of lines for Field 1 & Field 2 according to 869 * Documentation/driver-api/media/drivers/cx2341x-devel.rst 870 * Field 1 is 312 for 625 line systems in BT.656 871 * Field 2 is 313 for 625 line systems in BT.656 872 */ 873 cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3, 874 s->handle, 312, 313); 875 876 if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE) 877 cx18_vbi_setup(s); 878 879 /* 880 * Select to receive I, P, and B frame index entries, if the 881 * index stream is enabled. Otherwise disable index entry 882 * generation. 883 */ 884 s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX]; 885 cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2, 886 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0); 887 888 /* Call out to the common CX2341x API setup for user controls */ 889 cx->cxhdl.priv = s; 890 cx2341x_handler_setup(&cx->cxhdl); 891 892 /* 893 * When starting a capture and we're set for radio, 894 * ensure the video is muted, despite the user control. 895 */ 896 if (!cx->cxhdl.video_mute && 897 test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) 898 cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle, 899 (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1); 900 901 /* Enable the Video Format Converter for UYVY 4:2:2 support, 902 * rather than the default HM12 Macroblovk 4:2:0 support. 903 */ 904 if (captype == CAPTURE_CHANNEL_TYPE_YUV) { 905 if (s->pixelformat == V4L2_PIX_FMT_UYVY) 906 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 907 s->handle, 1); 908 else 909 /* If in doubt, default to HM12 */ 910 cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2, 911 s->handle, 0); 912 } 913 } 914 915 if (atomic_read(&cx->tot_capturing) == 0) { 916 cx2341x_handler_set_busy(&cx->cxhdl, 1); 917 clear_bit(CX18_F_I_EOS, &cx->i_flags); 918 cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK); 919 } 920 921 cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle, 922 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem, 923 (void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem); 924 925 /* Init all the cpu_mdls for this stream */ 926 cx18_stream_configure_mdls(s); 927 _cx18_stream_load_fw_queue(s); 928 929 /* begin_capture */ 930 if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) { 931 CX18_DEBUG_WARN("Error starting capture!\n"); 932 /* Ensure we're really not capturing before releasing MDLs */ 933 set_bit(CX18_F_S_STOPPING, &s->s_flags); 934 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 935 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1); 936 else 937 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 938 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 939 /* FIXME - CX18_F_S_STREAMOFF as well? */ 940 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 941 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 942 s->handle = CX18_INVALID_TASK_HANDLE; 943 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 944 if (atomic_read(&cx->tot_capturing) == 0) { 945 set_bit(CX18_F_I_EOS, &cx->i_flags); 946 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 947 } 948 return -EINVAL; 949 } 950 951 /* you're live! sit back and await interrupts :) */ 952 if (captype != CAPTURE_CHANNEL_TYPE_TS) 953 atomic_inc(&cx->ana_capturing); 954 atomic_inc(&cx->tot_capturing); 955 return 0; 956 } 957 EXPORT_SYMBOL(cx18_start_v4l2_encode_stream); 958 959 void cx18_stop_all_captures(struct cx18 *cx) 960 { 961 int i; 962 963 for (i = CX18_MAX_STREAMS - 1; i >= 0; i--) { 964 struct cx18_stream *s = &cx->streams[i]; 965 966 if (!cx18_stream_enabled(s)) 967 continue; 968 if (test_bit(CX18_F_S_STREAMING, &s->s_flags)) 969 cx18_stop_v4l2_encode_stream(s, 0); 970 } 971 } 972 973 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end) 974 { 975 struct cx18 *cx = s->cx; 976 977 if (!cx18_stream_enabled(s)) 978 return -EINVAL; 979 980 /* This function assumes that you are allowed to stop the capture 981 and that we are actually capturing */ 982 983 CX18_DEBUG_INFO("Stop Capture\n"); 984 985 if (atomic_read(&cx->tot_capturing) == 0) 986 return 0; 987 988 set_bit(CX18_F_S_STOPPING, &s->s_flags); 989 if (s->type == CX18_ENC_STREAM_TYPE_MPG) 990 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, !gop_end); 991 else 992 cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle); 993 994 if (s->type == CX18_ENC_STREAM_TYPE_MPG && gop_end) { 995 CX18_INFO("ignoring gop_end: not (yet?) supported by the firmware\n"); 996 } 997 998 if (s->type != CX18_ENC_STREAM_TYPE_TS) 999 atomic_dec(&cx->ana_capturing); 1000 atomic_dec(&cx->tot_capturing); 1001 1002 /* Clear capture and no-read bits */ 1003 clear_bit(CX18_F_S_STREAMING, &s->s_flags); 1004 1005 /* Tell the CX23418 it can't use our buffers anymore */ 1006 cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle); 1007 1008 cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle); 1009 s->handle = CX18_INVALID_TASK_HANDLE; 1010 clear_bit(CX18_F_S_STOPPING, &s->s_flags); 1011 1012 if (atomic_read(&cx->tot_capturing) > 0) 1013 return 0; 1014 1015 cx2341x_handler_set_busy(&cx->cxhdl, 0); 1016 cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK); 1017 wake_up(&s->waitq); 1018 1019 return 0; 1020 } 1021 EXPORT_SYMBOL(cx18_stop_v4l2_encode_stream); 1022 1023 u32 cx18_find_handle(struct cx18 *cx) 1024 { 1025 int i; 1026 1027 /* find first available handle to be used for global settings */ 1028 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1029 struct cx18_stream *s = &cx->streams[i]; 1030 1031 if (s->video_dev.v4l2_dev && (s->handle != CX18_INVALID_TASK_HANDLE)) 1032 return s->handle; 1033 } 1034 return CX18_INVALID_TASK_HANDLE; 1035 } 1036 1037 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle) 1038 { 1039 int i; 1040 struct cx18_stream *s; 1041 1042 if (handle == CX18_INVALID_TASK_HANDLE) 1043 return NULL; 1044 1045 for (i = 0; i < CX18_MAX_STREAMS; i++) { 1046 s = &cx->streams[i]; 1047 if (s->handle != handle) 1048 continue; 1049 if (cx18_stream_enabled(s)) 1050 return s; 1051 } 1052 return NULL; 1053 } 1054