ivtv-streams.c revision 914610e8c508224a6fb9fb501ed4bda25b340ba6
1/* 2 init/start/stop/exit stream functions 3 Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> 4 Copyright (C) 2004 Chris Kennedy <c@groovy.org> 5 Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22/* License: GPL 23 * Author: Kevin Thayer <nufan_wfk at yahoo dot com> 24 * 25 * This file will hold API related functions, both internal (firmware api) 26 * and external (v4l2, etc) 27 * 28 * ----- 29 * MPG600/MPG160 support by T.Adachi <tadachi@tadachi-net.com> 30 * and Takeru KOMORIYA<komoriya@paken.org> 31 * 32 * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org> 33 * using information provided by Jiun-Kuei Jung @ AVerMedia. 34 */ 35 36#include "ivtv-driver.h" 37#include "ivtv-fileops.h" 38#include "ivtv-queue.h" 39#include "ivtv-mailbox.h" 40#include "ivtv-ioctl.h" 41#include "ivtv-irq.h" 42#include "ivtv-yuv.h" 43#include "ivtv-cards.h" 44#include "ivtv-streams.h" 45#include "ivtv-firmware.h" 46#include <media/v4l2-event.h> 47 48static const struct v4l2_file_operations ivtv_v4l2_enc_fops = { 49 .owner = THIS_MODULE, 50 .read = ivtv_v4l2_read, 51 .write = ivtv_v4l2_write, 52 .open = ivtv_v4l2_open, 53 .unlocked_ioctl = ivtv_v4l2_ioctl, 54 .release = ivtv_v4l2_close, 55 .poll = ivtv_v4l2_enc_poll, 56}; 57 58static const struct v4l2_file_operations ivtv_v4l2_dec_fops = { 59 .owner = THIS_MODULE, 60 .read = ivtv_v4l2_read, 61 .write = ivtv_v4l2_write, 62 .open = ivtv_v4l2_open, 63 .unlocked_ioctl = ivtv_v4l2_ioctl, 64 .release = ivtv_v4l2_close, 65 .poll = ivtv_v4l2_dec_poll, 66}; 67 68#define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */ 69#define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */ 70#define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */ 71#define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */ 72#define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */ 73#define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */ 74 75static struct { 76 const char *name; 77 int vfl_type; 78 int num_offset; 79 int dma, pio; 80 enum v4l2_buf_type buf_type; 81 const struct v4l2_file_operations *fops; 82} ivtv_stream_info[] = { 83 { /* IVTV_ENC_STREAM_TYPE_MPG */ 84 "encoder MPG", 85 VFL_TYPE_GRABBER, 0, 86 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 87 &ivtv_v4l2_enc_fops 88 }, 89 { /* IVTV_ENC_STREAM_TYPE_YUV */ 90 "encoder YUV", 91 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET, 92 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VIDEO_CAPTURE, 93 &ivtv_v4l2_enc_fops 94 }, 95 { /* IVTV_ENC_STREAM_TYPE_VBI */ 96 "encoder VBI", 97 VFL_TYPE_VBI, 0, 98 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_VBI_CAPTURE, 99 &ivtv_v4l2_enc_fops 100 }, 101 { /* IVTV_ENC_STREAM_TYPE_PCM */ 102 "encoder PCM", 103 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET, 104 PCI_DMA_FROMDEVICE, 0, V4L2_BUF_TYPE_PRIVATE, 105 &ivtv_v4l2_enc_fops 106 }, 107 { /* IVTV_ENC_STREAM_TYPE_RAD */ 108 "encoder radio", 109 VFL_TYPE_RADIO, 0, 110 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_PRIVATE, 111 &ivtv_v4l2_enc_fops 112 }, 113 { /* IVTV_DEC_STREAM_TYPE_MPG */ 114 "decoder MPG", 115 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET, 116 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT, 117 &ivtv_v4l2_dec_fops 118 }, 119 { /* IVTV_DEC_STREAM_TYPE_VBI */ 120 "decoder VBI", 121 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET, 122 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_CAPTURE, 123 &ivtv_v4l2_enc_fops 124 }, 125 { /* IVTV_DEC_STREAM_TYPE_VOUT */ 126 "decoder VOUT", 127 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET, 128 PCI_DMA_NONE, 1, V4L2_BUF_TYPE_VBI_OUTPUT, 129 &ivtv_v4l2_dec_fops 130 }, 131 { /* IVTV_DEC_STREAM_TYPE_YUV */ 132 "decoder YUV", 133 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET, 134 PCI_DMA_TODEVICE, 0, V4L2_BUF_TYPE_VIDEO_OUTPUT, 135 &ivtv_v4l2_dec_fops 136 } 137}; 138 139static void ivtv_stream_init(struct ivtv *itv, int type) 140{ 141 struct ivtv_stream *s = &itv->streams[type]; 142 struct video_device *vdev = s->vdev; 143 144 /* we need to keep vdev, so restore it afterwards */ 145 memset(s, 0, sizeof(*s)); 146 s->vdev = vdev; 147 148 /* initialize ivtv_stream fields */ 149 s->itv = itv; 150 s->type = type; 151 s->name = ivtv_stream_info[type].name; 152 153 if (ivtv_stream_info[type].pio) 154 s->dma = PCI_DMA_NONE; 155 else 156 s->dma = ivtv_stream_info[type].dma; 157 s->buf_size = itv->stream_buf_size[type]; 158 if (s->buf_size) 159 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size; 160 spin_lock_init(&s->qlock); 161 init_waitqueue_head(&s->waitq); 162 s->id = -1; 163 s->sg_handle = IVTV_DMA_UNMAPPED; 164 ivtv_queue_init(&s->q_free); 165 ivtv_queue_init(&s->q_full); 166 ivtv_queue_init(&s->q_dma); 167 ivtv_queue_init(&s->q_predma); 168 ivtv_queue_init(&s->q_io); 169} 170 171static int ivtv_prep_dev(struct ivtv *itv, int type) 172{ 173 struct ivtv_stream *s = &itv->streams[type]; 174 int num_offset = ivtv_stream_info[type].num_offset; 175 int num = itv->instance + ivtv_first_minor + num_offset; 176 177 /* These four fields are always initialized. If vdev == NULL, then 178 this stream is not in use. In that case no other fields but these 179 four can be used. */ 180 s->vdev = NULL; 181 s->itv = itv; 182 s->type = type; 183 s->name = ivtv_stream_info[type].name; 184 185 /* Check whether the radio is supported */ 186 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO)) 187 return 0; 188 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) 189 return 0; 190 191 /* User explicitly selected 0 buffers for these streams, so don't 192 create them. */ 193 if (ivtv_stream_info[type].dma != PCI_DMA_NONE && 194 itv->options.kilobytes[type] == 0) { 195 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name); 196 return 0; 197 } 198 199 ivtv_stream_init(itv, type); 200 201 /* allocate and initialize the v4l2 video device structure */ 202 s->vdev = video_device_alloc(); 203 if (s->vdev == NULL) { 204 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name); 205 return -ENOMEM; 206 } 207 208 snprintf(s->vdev->name, sizeof(s->vdev->name), "%s %s", 209 itv->v4l2_dev.name, s->name); 210 211 s->vdev->num = num; 212 s->vdev->v4l2_dev = &itv->v4l2_dev; 213 s->vdev->fops = ivtv_stream_info[type].fops; 214 s->vdev->release = video_device_release; 215 s->vdev->tvnorms = V4L2_STD_ALL; 216 ivtv_set_funcs(s->vdev); 217 return 0; 218} 219 220/* Initialize v4l2 variables and prepare v4l2 devices */ 221int ivtv_streams_setup(struct ivtv *itv) 222{ 223 int type; 224 225 /* Setup V4L2 Devices */ 226 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 227 /* Prepare device */ 228 if (ivtv_prep_dev(itv, type)) 229 break; 230 231 if (itv->streams[type].vdev == NULL) 232 continue; 233 234 /* Allocate Stream */ 235 if (ivtv_stream_alloc(&itv->streams[type])) 236 break; 237 } 238 if (type == IVTV_MAX_STREAMS) 239 return 0; 240 241 /* One or more streams could not be initialized. Clean 'em all up. */ 242 ivtv_streams_cleanup(itv, 0); 243 return -ENOMEM; 244} 245 246static int ivtv_reg_dev(struct ivtv *itv, int type) 247{ 248 struct ivtv_stream *s = &itv->streams[type]; 249 int vfl_type = ivtv_stream_info[type].vfl_type; 250 const char *name; 251 int num; 252 253 if (s->vdev == NULL) 254 return 0; 255 256 num = s->vdev->num; 257 /* card number + user defined offset + device offset */ 258 if (type != IVTV_ENC_STREAM_TYPE_MPG) { 259 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG]; 260 261 if (s_mpg->vdev) 262 num = s_mpg->vdev->num + ivtv_stream_info[type].num_offset; 263 } 264 video_set_drvdata(s->vdev, s); 265 266 /* Register device. First try the desired minor, then any free one. */ 267 if (video_register_device_no_warn(s->vdev, vfl_type, num)) { 268 IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 269 s->name, num); 270 video_device_release(s->vdev); 271 s->vdev = NULL; 272 return -ENOMEM; 273 } 274 name = video_device_node_name(s->vdev); 275 276 switch (vfl_type) { 277 case VFL_TYPE_GRABBER: 278 IVTV_INFO("Registered device %s for %s (%d kB)\n", 279 name, s->name, itv->options.kilobytes[type]); 280 break; 281 case VFL_TYPE_RADIO: 282 IVTV_INFO("Registered device %s for %s\n", 283 name, s->name); 284 break; 285 case VFL_TYPE_VBI: 286 if (itv->options.kilobytes[type]) 287 IVTV_INFO("Registered device %s for %s (%d kB)\n", 288 name, s->name, itv->options.kilobytes[type]); 289 else 290 IVTV_INFO("Registered device %s for %s\n", 291 name, s->name); 292 break; 293 } 294 return 0; 295} 296 297/* Register v4l2 devices */ 298int ivtv_streams_register(struct ivtv *itv) 299{ 300 int type; 301 int err = 0; 302 303 /* Register V4L2 devices */ 304 for (type = 0; type < IVTV_MAX_STREAMS; type++) 305 err |= ivtv_reg_dev(itv, type); 306 307 if (err == 0) 308 return 0; 309 310 /* One or more streams could not be initialized. Clean 'em all up. */ 311 ivtv_streams_cleanup(itv, 1); 312 return -ENOMEM; 313} 314 315/* Unregister v4l2 devices */ 316void ivtv_streams_cleanup(struct ivtv *itv, int unregister) 317{ 318 int type; 319 320 /* Teardown all streams */ 321 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 322 struct video_device *vdev = itv->streams[type].vdev; 323 324 itv->streams[type].vdev = NULL; 325 if (vdev == NULL) 326 continue; 327 328 ivtv_stream_free(&itv->streams[type]); 329 /* Unregister or release device */ 330 if (unregister) 331 video_unregister_device(vdev); 332 else 333 video_device_release(vdev); 334 } 335} 336 337static void ivtv_vbi_setup(struct ivtv *itv) 338{ 339 int raw = ivtv_raw_vbi(itv); 340 u32 data[CX2341X_MBOX_MAX_DATA]; 341 int lines; 342 int i; 343 344 /* Reset VBI */ 345 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0); 346 347 /* setup VBI registers */ 348 if (raw) 349 v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi); 350 else 351 v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced); 352 353 /* determine number of lines and total number of VBI bytes. 354 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 355 The '- 1' byte is probably an unused U or V byte. Or something... 356 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal 357 header, 42 data bytes + checksum (to be confirmed) */ 358 if (raw) { 359 lines = itv->vbi.count * 2; 360 } else { 361 lines = itv->is_60hz ? 24 : 38; 362 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840)) 363 lines += 2; 364 } 365 366 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 367 368 /* Note: sliced vs raw flag doesn't seem to have any effect 369 TODO: check mode (0x02) value with older ivtv versions. */ 370 data[0] = raw | 0x02 | (0xbd << 8); 371 372 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */ 373 data[1] = 1; 374 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */ 375 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size); 376 /* The start/stop codes determine which VBI lines end up in the raw VBI data area. 377 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line 378 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video) 379 code. These values for raw VBI are obtained from a driver disassembly. The sliced 380 start/stop codes was deduced from this, but they do not appear in the driver. 381 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54. 382 However, I have no idea what these values are for. */ 383 if (itv->hw_flags & IVTV_HW_CX25840) { 384 /* Setup VBI for the cx25840 digitizer */ 385 if (raw) { 386 data[3] = 0x20602060; 387 data[4] = 0x30703070; 388 } else { 389 data[3] = 0xB0F0B0F0; 390 data[4] = 0xA0E0A0E0; 391 } 392 /* Lines per frame */ 393 data[5] = lines; 394 /* bytes per line */ 395 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 396 } else { 397 /* Setup VBI for the saa7115 digitizer */ 398 if (raw) { 399 data[3] = 0x25256262; 400 data[4] = 0x387F7F7F; 401 } else { 402 data[3] = 0xABABECEC; 403 data[4] = 0xB6F1F1F1; 404 } 405 /* Lines per frame */ 406 data[5] = lines; 407 /* bytes per line */ 408 data[6] = itv->vbi.enc_size / lines; 409 } 410 411 IVTV_DEBUG_INFO( 412 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n", 413 data[0], data[1], data[2], data[5], data[6]); 414 415 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data); 416 417 /* returns the VBI encoder memory area. */ 418 itv->vbi.enc_start = data[2]; 419 itv->vbi.fpi = data[0]; 420 if (!itv->vbi.fpi) 421 itv->vbi.fpi = 1; 422 423 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n", 424 itv->vbi.enc_start, data[1], itv->vbi.fpi); 425 426 /* select VBI lines. 427 Note that the sliced argument seems to have no effect. */ 428 for (i = 2; i <= 24; i++) { 429 int valid; 430 431 if (itv->is_60hz) { 432 valid = i >= 10 && i < 22; 433 } else { 434 valid = i >= 6 && i < 24; 435 } 436 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1, 437 valid, 0 , 0, 0); 438 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000, 439 valid, 0, 0, 0); 440 } 441 442 /* Remaining VBI questions: 443 - Is it possible to select particular VBI lines only for inclusion in the MPEG 444 stream? Currently you can only get the first X lines. 445 - Is mixed raw and sliced VBI possible? 446 - What's the meaning of the raw/sliced flag? 447 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */ 448} 449 450int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) 451{ 452 u32 data[CX2341X_MBOX_MAX_DATA]; 453 struct ivtv *itv = s->itv; 454 struct cx2341x_mpeg_params *p = &itv->params; 455 int captype = 0, subtype = 0; 456 int enable_passthrough = 0; 457 458 if (s->vdev == NULL) 459 return -EINVAL; 460 461 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name); 462 463 switch (s->type) { 464 case IVTV_ENC_STREAM_TYPE_MPG: 465 captype = 0; 466 subtype = 3; 467 468 /* Stop Passthrough */ 469 if (itv->output_mode == OUT_PASSTHROUGH) { 470 ivtv_passthrough_mode(itv, 0); 471 enable_passthrough = 1; 472 } 473 itv->mpg_data_received = itv->vbi_data_inserted = 0; 474 itv->dualwatch_jiffies = jiffies; 475 itv->dualwatch_stereo_mode = p->audio_properties & 0x0300; 476 itv->search_pack_header = 0; 477 break; 478 479 case IVTV_ENC_STREAM_TYPE_YUV: 480 if (itv->output_mode == OUT_PASSTHROUGH) { 481 captype = 2; 482 subtype = 11; /* video+audio+decoder */ 483 break; 484 } 485 captype = 1; 486 subtype = 1; 487 break; 488 case IVTV_ENC_STREAM_TYPE_PCM: 489 captype = 1; 490 subtype = 2; 491 break; 492 case IVTV_ENC_STREAM_TYPE_VBI: 493 captype = 1; 494 subtype = 4; 495 496 itv->vbi.frame = 0; 497 itv->vbi.inserted_frame = 0; 498 memset(itv->vbi.sliced_mpeg_size, 499 0, sizeof(itv->vbi.sliced_mpeg_size)); 500 break; 501 default: 502 return -EINVAL; 503 } 504 s->subtype = subtype; 505 s->buffers_stolen = 0; 506 507 /* Clear Streamoff flags in case left from last capture */ 508 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 509 510 if (atomic_read(&itv->capturing) == 0) { 511 int digitizer; 512 513 /* Always use frame based mode. Experiments have demonstrated that byte 514 stream based mode results in dropped frames and corruption. Not often, 515 but occasionally. Many thanks go to Leonard Orb who spent a lot of 516 effort and time trying to trace the cause of the drop outs. */ 517 /* 1 frame per DMA */ 518 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */ 519 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1); 520 521 /* Stuff from Windows, we don't know what it is */ 522 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0); 523 /* According to the docs, this should be correct. However, this is 524 untested. I don't dare enable this without having tested it. 525 Only very few old cards actually have this hardware combination. 526 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 527 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0); 528 */ 529 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415); 530 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0); 531 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1); 532 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); 533 534 /* assign placeholder */ 535 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12, 536 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); 537 538 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X)) 539 digitizer = 0xF1; 540 else if (itv->card->hw_all & IVTV_HW_SAA7114) 541 digitizer = 0xEF; 542 else /* cx25840 */ 543 digitizer = 0x140; 544 545 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer); 546 547 /* Setup VBI */ 548 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) { 549 ivtv_vbi_setup(itv); 550 } 551 552 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */ 553 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400); 554 itv->pgm_info_offset = data[0]; 555 itv->pgm_info_num = data[1]; 556 itv->pgm_info_write_idx = 0; 557 itv->pgm_info_read_idx = 0; 558 559 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n", 560 itv->pgm_info_offset, itv->pgm_info_num); 561 562 /* Setup API for Stream */ 563 cx2341x_update(itv, ivtv_api_func, NULL, p); 564 565 /* mute if capturing radio */ 566 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) 567 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, 568 1 | (p->video_mute_yuv << 8)); 569 } 570 571 /* Vsync Setup */ 572 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { 573 /* event notification (on) */ 574 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1); 575 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); 576 } 577 578 if (atomic_read(&itv->capturing) == 0) { 579 /* Clear all Pending Interrupts */ 580 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 581 582 clear_bit(IVTV_F_I_EOS, &itv->i_flags); 583 584 /* Initialize Digitizer for Capture */ 585 /* Avoid tinny audio problem - ensure audio clocks are going */ 586 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1); 587 /* Avoid unpredictable PCI bus hang - disable video clocks */ 588 v4l2_subdev_call(itv->sd_video, video, s_stream, 0); 589 ivtv_msleep_timeout(300, 1); 590 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0); 591 v4l2_subdev_call(itv->sd_video, video, s_stream, 1); 592 } 593 594 /* begin_capture */ 595 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype)) 596 { 597 IVTV_DEBUG_WARN( "Error starting capture!\n"); 598 return -EINVAL; 599 } 600 601 /* Start Passthrough */ 602 if (enable_passthrough) { 603 ivtv_passthrough_mode(itv, 1); 604 } 605 606 if (s->type == IVTV_ENC_STREAM_TYPE_VBI) 607 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); 608 else 609 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 610 611 /* you're live! sit back and await interrupts :) */ 612 atomic_inc(&itv->capturing); 613 return 0; 614} 615 616static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s) 617{ 618 u32 data[CX2341X_MBOX_MAX_DATA]; 619 struct ivtv *itv = s->itv; 620 struct cx2341x_mpeg_params *p = &itv->params; 621 int datatype; 622 u16 width; 623 u16 height; 624 625 if (s->vdev == NULL) 626 return -EINVAL; 627 628 IVTV_DEBUG_INFO("Setting some initial decoder settings\n"); 629 630 width = p->width; 631 height = p->height; 632 633 /* set audio mode to left/stereo for dual/stereo mode. */ 634 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode); 635 636 /* set number of internal decoder buffers */ 637 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0); 638 639 /* prebuffering */ 640 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1); 641 642 /* extract from user packets */ 643 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1); 644 itv->vbi.dec_start = data[0]; 645 646 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n", 647 itv->vbi.dec_start, data[1]); 648 649 /* set decoder source settings */ 650 /* Data type: 0 = mpeg from host, 651 1 = yuv from encoder, 652 2 = yuv_from_host */ 653 switch (s->type) { 654 case IVTV_DEC_STREAM_TYPE_YUV: 655 if (itv->output_mode == OUT_PASSTHROUGH) { 656 datatype = 1; 657 } else { 658 /* Fake size to avoid switching video standard */ 659 datatype = 2; 660 width = 720; 661 height = itv->is_out_50hz ? 576 : 480; 662 } 663 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype); 664 break; 665 case IVTV_DEC_STREAM_TYPE_MPG: 666 default: 667 datatype = 0; 668 break; 669 } 670 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype, 671 width, height, p->audio_properties)) { 672 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n"); 673 } 674 675 /* Decoder sometimes dies here, so wait a moment */ 676 ivtv_msleep_timeout(10, 0); 677 678 /* Known failure point for firmware, so check */ 679 if (ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream") < 0) 680 return -EIO; 681 682 return 0; 683} 684 685int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset) 686{ 687 struct ivtv *itv = s->itv; 688 int rc; 689 690 if (s->vdev == NULL) 691 return -EINVAL; 692 693 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) 694 return 0; /* already started */ 695 696 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset); 697 698 rc = ivtv_setup_v4l2_decode_stream(s); 699 if (rc < 0) { 700 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 701 return rc; 702 } 703 704 /* set dma size to 65536 bytes */ 705 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536); 706 707 /* Clear Streamoff */ 708 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 709 710 /* Zero out decoder counters */ 711 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]); 712 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]); 713 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]); 714 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]); 715 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]); 716 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]); 717 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]); 718 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]); 719 720 /* turn on notification of dual/stereo mode change */ 721 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); 722 723 /* start playback */ 724 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0); 725 726 /* Let things settle before we actually start */ 727 ivtv_msleep_timeout(10, 0); 728 729 /* Clear the following Interrupt mask bits for decoding */ 730 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE); 731 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask); 732 733 /* you're live! sit back and await interrupts :) */ 734 atomic_inc(&itv->decoding); 735 return 0; 736} 737 738void ivtv_stop_all_captures(struct ivtv *itv) 739{ 740 int i; 741 742 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) { 743 struct ivtv_stream *s = &itv->streams[i]; 744 745 if (s->vdev == NULL) 746 continue; 747 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { 748 ivtv_stop_v4l2_encode_stream(s, 0); 749 } 750 } 751} 752 753int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end) 754{ 755 struct ivtv *itv = s->itv; 756 DECLARE_WAITQUEUE(wait, current); 757 int cap_type; 758 int stopmode; 759 760 if (s->vdev == NULL) 761 return -EINVAL; 762 763 /* This function assumes that you are allowed to stop the capture 764 and that we are actually capturing */ 765 766 IVTV_DEBUG_INFO("Stop Capture\n"); 767 768 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) 769 return 0; 770 if (atomic_read(&itv->capturing) == 0) 771 return 0; 772 773 switch (s->type) { 774 case IVTV_ENC_STREAM_TYPE_YUV: 775 cap_type = 1; 776 break; 777 case IVTV_ENC_STREAM_TYPE_PCM: 778 cap_type = 1; 779 break; 780 case IVTV_ENC_STREAM_TYPE_VBI: 781 cap_type = 1; 782 break; 783 case IVTV_ENC_STREAM_TYPE_MPG: 784 default: 785 cap_type = 0; 786 break; 787 } 788 789 /* Stop Capture Mode */ 790 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { 791 stopmode = 0; 792 } else { 793 stopmode = 1; 794 } 795 796 /* end_capture */ 797 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */ 798 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype); 799 800 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) { 801 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { 802 /* only run these if we're shutting down the last cap */ 803 unsigned long duration; 804 unsigned long then = jiffies; 805 806 add_wait_queue(&itv->eos_waitq, &wait); 807 808 set_current_state(TASK_INTERRUPTIBLE); 809 810 /* wait 2s for EOS interrupt */ 811 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && 812 time_before(jiffies, 813 then + msecs_to_jiffies(2000))) { 814 schedule_timeout(msecs_to_jiffies(10)); 815 } 816 817 /* To convert jiffies to ms, we must multiply by 1000 818 * and divide by HZ. To avoid runtime division, we 819 * convert this to multiplication by 1000/HZ. 820 * Since integer division truncates, we get the best 821 * accuracy if we do a rounding calculation of the constant. 822 * Think of the case where HZ is 1024. 823 */ 824 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then); 825 826 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) { 827 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name); 828 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration); 829 } else { 830 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration); 831 } 832 set_current_state(TASK_RUNNING); 833 remove_wait_queue(&itv->eos_waitq, &wait); 834 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 835 } 836 837 /* Handle any pending interrupts */ 838 ivtv_msleep_timeout(100, 1); 839 } 840 841 atomic_dec(&itv->capturing); 842 843 /* Clear capture and no-read bits */ 844 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 845 846 if (s->type == IVTV_ENC_STREAM_TYPE_VBI) 847 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); 848 849 if (atomic_read(&itv->capturing) > 0) { 850 return 0; 851 } 852 853 /* Set the following Interrupt mask bits for capture */ 854 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 855 del_timer(&itv->dma_timer); 856 857 /* event notification (off) */ 858 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { 859 /* type: 0 = refresh */ 860 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */ 861 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1); 862 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); 863 } 864 865 /* Raw-passthrough is implied on start. Make sure it's stopped so 866 the encoder will re-initialize when next started */ 867 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7); 868 869 wake_up(&s->waitq); 870 871 return 0; 872} 873 874int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts) 875{ 876 static const struct v4l2_event ev = { 877 .type = V4L2_EVENT_EOS, 878 }; 879 struct ivtv *itv = s->itv; 880 881 if (s->vdev == NULL) 882 return -EINVAL; 883 884 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG) 885 return -EINVAL; 886 887 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags)) 888 return 0; 889 890 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags); 891 892 /* Stop Decoder */ 893 if (!(flags & VIDEO_CMD_STOP_IMMEDIATELY) || pts) { 894 u32 tmp = 0; 895 896 /* Wait until the decoder is no longer running */ 897 if (pts) { 898 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 899 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32)); 900 } 901 while (1) { 902 u32 data[CX2341X_MBOX_MAX_DATA]; 903 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0); 904 if (s->q_full.buffers + s->q_dma.buffers == 0) { 905 if (tmp == data[3]) 906 break; 907 tmp = data[3]; 908 } 909 if (ivtv_msleep_timeout(100, 1)) 910 break; 911 } 912 } 913 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & VIDEO_CMD_STOP_TO_BLACK, 0, 0); 914 915 /* turn off notification of dual/stereo mode change */ 916 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); 917 918 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE); 919 del_timer(&itv->dma_timer); 920 921 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); 922 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 923 ivtv_flush_queues(s); 924 925 /* decoder needs time to settle */ 926 ivtv_msleep_timeout(40, 0); 927 928 /* decrement decoding */ 929 atomic_dec(&itv->decoding); 930 931 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags); 932 wake_up(&itv->event_waitq); 933 v4l2_event_queue(s->vdev, &ev); 934 935 /* wake up wait queues */ 936 wake_up(&s->waitq); 937 938 return 0; 939} 940 941int ivtv_passthrough_mode(struct ivtv *itv, int enable) 942{ 943 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV]; 944 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; 945 946 if (yuv_stream->vdev == NULL || dec_stream->vdev == NULL) 947 return -EINVAL; 948 949 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n"); 950 951 /* Prevent others from starting/stopping streams while we 952 initiate/terminate passthrough mode */ 953 if (enable) { 954 if (itv->output_mode == OUT_PASSTHROUGH) { 955 return 0; 956 } 957 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH) 958 return -EBUSY; 959 960 /* Fully initialize stream, and then unflag init */ 961 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); 962 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); 963 964 /* Setup YUV Decoder */ 965 ivtv_setup_v4l2_decode_stream(dec_stream); 966 967 /* Start Decoder */ 968 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1); 969 atomic_inc(&itv->decoding); 970 971 /* Setup capture if not already done */ 972 if (atomic_read(&itv->capturing) == 0) { 973 cx2341x_update(itv, ivtv_api_func, NULL, &itv->params); 974 } 975 976 /* Start Passthrough Mode */ 977 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11); 978 atomic_inc(&itv->capturing); 979 return 0; 980 } 981 982 if (itv->output_mode != OUT_PASSTHROUGH) 983 return 0; 984 985 /* Stop Passthrough Mode */ 986 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11); 987 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0); 988 989 atomic_dec(&itv->capturing); 990 atomic_dec(&itv->decoding); 991 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); 992 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); 993 itv->output_mode = OUT_NONE; 994 995 return 0; 996} 997