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 48 static 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 = video_ioctl2, 54 .release = ivtv_v4l2_close, 55 .poll = ivtv_v4l2_enc_poll, 56 }; 57 58 static 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 = video_ioctl2, 64 .release = ivtv_v4l2_close, 65 .poll = ivtv_v4l2_dec_poll, 66 }; 67 68 static const struct v4l2_file_operations ivtv_v4l2_radio_fops = { 69 .owner = THIS_MODULE, 70 .open = ivtv_v4l2_open, 71 .unlocked_ioctl = video_ioctl2, 72 .release = ivtv_v4l2_close, 73 .poll = ivtv_v4l2_enc_poll, 74 }; 75 76 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */ 77 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */ 78 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */ 79 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */ 80 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */ 81 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */ 82 83 static struct { 84 const char *name; 85 int vfl_type; 86 int num_offset; 87 int dma, pio; 88 u32 v4l2_caps; 89 const struct v4l2_file_operations *fops; 90 } ivtv_stream_info[] = { 91 { /* IVTV_ENC_STREAM_TYPE_MPG */ 92 "encoder MPG", 93 VFL_TYPE_GRABBER, 0, 94 PCI_DMA_FROMDEVICE, 0, 95 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | 96 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 97 &ivtv_v4l2_enc_fops 98 }, 99 { /* IVTV_ENC_STREAM_TYPE_YUV */ 100 "encoder YUV", 101 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_YUV_OFFSET, 102 PCI_DMA_FROMDEVICE, 0, 103 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | 104 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 105 &ivtv_v4l2_enc_fops 106 }, 107 { /* IVTV_ENC_STREAM_TYPE_VBI */ 108 "encoder VBI", 109 VFL_TYPE_VBI, 0, 110 PCI_DMA_FROMDEVICE, 0, 111 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER | 112 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 113 &ivtv_v4l2_enc_fops 114 }, 115 { /* IVTV_ENC_STREAM_TYPE_PCM */ 116 "encoder PCM", 117 VFL_TYPE_GRABBER, IVTV_V4L2_ENC_PCM_OFFSET, 118 PCI_DMA_FROMDEVICE, 0, 119 V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 120 &ivtv_v4l2_enc_fops 121 }, 122 { /* IVTV_ENC_STREAM_TYPE_RAD */ 123 "encoder radio", 124 VFL_TYPE_RADIO, 0, 125 PCI_DMA_NONE, 1, 126 V4L2_CAP_RADIO | V4L2_CAP_TUNER, 127 &ivtv_v4l2_radio_fops 128 }, 129 { /* IVTV_DEC_STREAM_TYPE_MPG */ 130 "decoder MPG", 131 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_MPG_OFFSET, 132 PCI_DMA_TODEVICE, 0, 133 V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 134 &ivtv_v4l2_dec_fops 135 }, 136 { /* IVTV_DEC_STREAM_TYPE_VBI */ 137 "decoder VBI", 138 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET, 139 PCI_DMA_NONE, 1, 140 V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE, 141 &ivtv_v4l2_enc_fops 142 }, 143 { /* IVTV_DEC_STREAM_TYPE_VOUT */ 144 "decoder VOUT", 145 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET, 146 PCI_DMA_NONE, 1, 147 V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 148 &ivtv_v4l2_dec_fops 149 }, 150 { /* IVTV_DEC_STREAM_TYPE_YUV */ 151 "decoder YUV", 152 VFL_TYPE_GRABBER, IVTV_V4L2_DEC_YUV_OFFSET, 153 PCI_DMA_TODEVICE, 0, 154 V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 155 &ivtv_v4l2_dec_fops 156 } 157 }; 158 159 static void ivtv_stream_init(struct ivtv *itv, int type) 160 { 161 struct ivtv_stream *s = &itv->streams[type]; 162 struct video_device *vdev = s->vdev; 163 164 /* we need to keep vdev, so restore it afterwards */ 165 memset(s, 0, sizeof(*s)); 166 s->vdev = vdev; 167 168 /* initialize ivtv_stream fields */ 169 s->itv = itv; 170 s->type = type; 171 s->name = ivtv_stream_info[type].name; 172 s->caps = ivtv_stream_info[type].v4l2_caps; 173 174 if (ivtv_stream_info[type].pio) 175 s->dma = PCI_DMA_NONE; 176 else 177 s->dma = ivtv_stream_info[type].dma; 178 s->buf_size = itv->stream_buf_size[type]; 179 if (s->buf_size) 180 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size; 181 spin_lock_init(&s->qlock); 182 init_waitqueue_head(&s->waitq); 183 s->sg_handle = IVTV_DMA_UNMAPPED; 184 ivtv_queue_init(&s->q_free); 185 ivtv_queue_init(&s->q_full); 186 ivtv_queue_init(&s->q_dma); 187 ivtv_queue_init(&s->q_predma); 188 ivtv_queue_init(&s->q_io); 189 } 190 191 static int ivtv_prep_dev(struct ivtv *itv, int type) 192 { 193 struct ivtv_stream *s = &itv->streams[type]; 194 int num_offset = ivtv_stream_info[type].num_offset; 195 int num = itv->instance + ivtv_first_minor + num_offset; 196 197 /* These four fields are always initialized. If vdev == NULL, then 198 this stream is not in use. In that case no other fields but these 199 four can be used. */ 200 s->vdev = NULL; 201 s->itv = itv; 202 s->type = type; 203 s->name = ivtv_stream_info[type].name; 204 205 /* Check whether the radio is supported */ 206 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO)) 207 return 0; 208 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) 209 return 0; 210 211 /* User explicitly selected 0 buffers for these streams, so don't 212 create them. */ 213 if (ivtv_stream_info[type].dma != PCI_DMA_NONE && 214 itv->options.kilobytes[type] == 0) { 215 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name); 216 return 0; 217 } 218 219 ivtv_stream_init(itv, type); 220 221 /* allocate and initialize the v4l2 video device structure */ 222 s->vdev = video_device_alloc(); 223 if (s->vdev == NULL) { 224 IVTV_ERR("Couldn't allocate v4l2 video_device for %s\n", s->name); 225 return -ENOMEM; 226 } 227 228 snprintf(s->vdev->name, sizeof(s->vdev->name), "%s %s", 229 itv->v4l2_dev.name, s->name); 230 231 s->vdev->num = num; 232 s->vdev->v4l2_dev = &itv->v4l2_dev; 233 if (ivtv_stream_info[type].v4l2_caps & 234 (V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_SLICED_VBI_OUTPUT)) 235 s->vdev->vfl_dir = VFL_DIR_TX; 236 s->vdev->fops = ivtv_stream_info[type].fops; 237 s->vdev->ctrl_handler = itv->v4l2_dev.ctrl_handler; 238 s->vdev->release = video_device_release; 239 s->vdev->tvnorms = V4L2_STD_ALL; 240 s->vdev->lock = &itv->serialize_lock; 241 if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { 242 v4l2_disable_ioctl(s->vdev, VIDIOC_S_AUDIO); 243 v4l2_disable_ioctl(s->vdev, VIDIOC_G_AUDIO); 244 v4l2_disable_ioctl(s->vdev, VIDIOC_ENUMAUDIO); 245 v4l2_disable_ioctl(s->vdev, VIDIOC_ENUMINPUT); 246 v4l2_disable_ioctl(s->vdev, VIDIOC_S_INPUT); 247 v4l2_disable_ioctl(s->vdev, VIDIOC_G_INPUT); 248 v4l2_disable_ioctl(s->vdev, VIDIOC_S_FREQUENCY); 249 v4l2_disable_ioctl(s->vdev, VIDIOC_G_FREQUENCY); 250 v4l2_disable_ioctl(s->vdev, VIDIOC_S_TUNER); 251 v4l2_disable_ioctl(s->vdev, VIDIOC_G_TUNER); 252 v4l2_disable_ioctl(s->vdev, VIDIOC_S_STD); 253 } 254 set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev->flags); 255 ivtv_set_funcs(s->vdev); 256 return 0; 257 } 258 259 /* Initialize v4l2 variables and prepare v4l2 devices */ 260 int ivtv_streams_setup(struct ivtv *itv) 261 { 262 int type; 263 264 /* Setup V4L2 Devices */ 265 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 266 /* Prepare device */ 267 if (ivtv_prep_dev(itv, type)) 268 break; 269 270 if (itv->streams[type].vdev == NULL) 271 continue; 272 273 /* Allocate Stream */ 274 if (ivtv_stream_alloc(&itv->streams[type])) 275 break; 276 } 277 if (type == IVTV_MAX_STREAMS) 278 return 0; 279 280 /* One or more streams could not be initialized. Clean 'em all up. */ 281 ivtv_streams_cleanup(itv, 0); 282 return -ENOMEM; 283 } 284 285 static int ivtv_reg_dev(struct ivtv *itv, int type) 286 { 287 struct ivtv_stream *s = &itv->streams[type]; 288 int vfl_type = ivtv_stream_info[type].vfl_type; 289 const char *name; 290 int num; 291 292 if (s->vdev == NULL) 293 return 0; 294 295 num = s->vdev->num; 296 /* card number + user defined offset + device offset */ 297 if (type != IVTV_ENC_STREAM_TYPE_MPG) { 298 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG]; 299 300 if (s_mpg->vdev) 301 num = s_mpg->vdev->num + ivtv_stream_info[type].num_offset; 302 } 303 video_set_drvdata(s->vdev, s); 304 305 /* Register device. First try the desired minor, then any free one. */ 306 if (video_register_device_no_warn(s->vdev, vfl_type, num)) { 307 IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 308 s->name, num); 309 video_device_release(s->vdev); 310 s->vdev = NULL; 311 return -ENOMEM; 312 } 313 name = video_device_node_name(s->vdev); 314 315 switch (vfl_type) { 316 case VFL_TYPE_GRABBER: 317 IVTV_INFO("Registered device %s for %s (%d kB)\n", 318 name, s->name, itv->options.kilobytes[type]); 319 break; 320 case VFL_TYPE_RADIO: 321 IVTV_INFO("Registered device %s for %s\n", 322 name, s->name); 323 break; 324 case VFL_TYPE_VBI: 325 if (itv->options.kilobytes[type]) 326 IVTV_INFO("Registered device %s for %s (%d kB)\n", 327 name, s->name, itv->options.kilobytes[type]); 328 else 329 IVTV_INFO("Registered device %s for %s\n", 330 name, s->name); 331 break; 332 } 333 return 0; 334 } 335 336 /* Register v4l2 devices */ 337 int ivtv_streams_register(struct ivtv *itv) 338 { 339 int type; 340 int err = 0; 341 342 /* Register V4L2 devices */ 343 for (type = 0; type < IVTV_MAX_STREAMS; type++) 344 err |= ivtv_reg_dev(itv, type); 345 346 if (err == 0) 347 return 0; 348 349 /* One or more streams could not be initialized. Clean 'em all up. */ 350 ivtv_streams_cleanup(itv, 1); 351 return -ENOMEM; 352 } 353 354 /* Unregister v4l2 devices */ 355 void ivtv_streams_cleanup(struct ivtv *itv, int unregister) 356 { 357 int type; 358 359 /* Teardown all streams */ 360 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 361 struct video_device *vdev = itv->streams[type].vdev; 362 363 itv->streams[type].vdev = NULL; 364 if (vdev == NULL) 365 continue; 366 367 ivtv_stream_free(&itv->streams[type]); 368 /* Unregister or release device */ 369 if (unregister) 370 video_unregister_device(vdev); 371 else 372 video_device_release(vdev); 373 } 374 } 375 376 static void ivtv_vbi_setup(struct ivtv *itv) 377 { 378 int raw = ivtv_raw_vbi(itv); 379 u32 data[CX2341X_MBOX_MAX_DATA]; 380 int lines; 381 int i; 382 383 /* Reset VBI */ 384 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0); 385 386 /* setup VBI registers */ 387 if (raw) 388 v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi); 389 else 390 v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced); 391 392 /* determine number of lines and total number of VBI bytes. 393 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 394 The '- 1' byte is probably an unused U or V byte. Or something... 395 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal 396 header, 42 data bytes + checksum (to be confirmed) */ 397 if (raw) { 398 lines = itv->vbi.count * 2; 399 } else { 400 lines = itv->is_60hz ? 24 : 38; 401 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840)) 402 lines += 2; 403 } 404 405 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 406 407 /* Note: sliced vs raw flag doesn't seem to have any effect 408 TODO: check mode (0x02) value with older ivtv versions. */ 409 data[0] = raw | 0x02 | (0xbd << 8); 410 411 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */ 412 data[1] = 1; 413 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */ 414 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size); 415 /* The start/stop codes determine which VBI lines end up in the raw VBI data area. 416 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line 417 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video) 418 code. These values for raw VBI are obtained from a driver disassembly. The sliced 419 start/stop codes was deduced from this, but they do not appear in the driver. 420 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54. 421 However, I have no idea what these values are for. */ 422 if (itv->hw_flags & IVTV_HW_CX25840) { 423 /* Setup VBI for the cx25840 digitizer */ 424 if (raw) { 425 data[3] = 0x20602060; 426 data[4] = 0x30703070; 427 } else { 428 data[3] = 0xB0F0B0F0; 429 data[4] = 0xA0E0A0E0; 430 } 431 /* Lines per frame */ 432 data[5] = lines; 433 /* bytes per line */ 434 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 435 } else { 436 /* Setup VBI for the saa7115 digitizer */ 437 if (raw) { 438 data[3] = 0x25256262; 439 data[4] = 0x387F7F7F; 440 } else { 441 data[3] = 0xABABECEC; 442 data[4] = 0xB6F1F1F1; 443 } 444 /* Lines per frame */ 445 data[5] = lines; 446 /* bytes per line */ 447 data[6] = itv->vbi.enc_size / lines; 448 } 449 450 IVTV_DEBUG_INFO( 451 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n", 452 data[0], data[1], data[2], data[5], data[6]); 453 454 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data); 455 456 /* returns the VBI encoder memory area. */ 457 itv->vbi.enc_start = data[2]; 458 itv->vbi.fpi = data[0]; 459 if (!itv->vbi.fpi) 460 itv->vbi.fpi = 1; 461 462 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n", 463 itv->vbi.enc_start, data[1], itv->vbi.fpi); 464 465 /* select VBI lines. 466 Note that the sliced argument seems to have no effect. */ 467 for (i = 2; i <= 24; i++) { 468 int valid; 469 470 if (itv->is_60hz) { 471 valid = i >= 10 && i < 22; 472 } else { 473 valid = i >= 6 && i < 24; 474 } 475 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1, 476 valid, 0 , 0, 0); 477 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000, 478 valid, 0, 0, 0); 479 } 480 481 /* Remaining VBI questions: 482 - Is it possible to select particular VBI lines only for inclusion in the MPEG 483 stream? Currently you can only get the first X lines. 484 - Is mixed raw and sliced VBI possible? 485 - What's the meaning of the raw/sliced flag? 486 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */ 487 } 488 489 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) 490 { 491 u32 data[CX2341X_MBOX_MAX_DATA]; 492 struct ivtv *itv = s->itv; 493 int captype = 0, subtype = 0; 494 int enable_passthrough = 0; 495 496 if (s->vdev == NULL) 497 return -EINVAL; 498 499 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name); 500 501 switch (s->type) { 502 case IVTV_ENC_STREAM_TYPE_MPG: 503 captype = 0; 504 subtype = 3; 505 506 /* Stop Passthrough */ 507 if (itv->output_mode == OUT_PASSTHROUGH) { 508 ivtv_passthrough_mode(itv, 0); 509 enable_passthrough = 1; 510 } 511 itv->mpg_data_received = itv->vbi_data_inserted = 0; 512 itv->dualwatch_jiffies = jiffies; 513 itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode); 514 itv->search_pack_header = 0; 515 break; 516 517 case IVTV_ENC_STREAM_TYPE_YUV: 518 if (itv->output_mode == OUT_PASSTHROUGH) { 519 captype = 2; 520 subtype = 11; /* video+audio+decoder */ 521 break; 522 } 523 captype = 1; 524 subtype = 1; 525 break; 526 case IVTV_ENC_STREAM_TYPE_PCM: 527 captype = 1; 528 subtype = 2; 529 break; 530 case IVTV_ENC_STREAM_TYPE_VBI: 531 captype = 1; 532 subtype = 4; 533 534 itv->vbi.frame = 0; 535 itv->vbi.inserted_frame = 0; 536 memset(itv->vbi.sliced_mpeg_size, 537 0, sizeof(itv->vbi.sliced_mpeg_size)); 538 break; 539 default: 540 return -EINVAL; 541 } 542 s->subtype = subtype; 543 s->buffers_stolen = 0; 544 545 /* Clear Streamoff flags in case left from last capture */ 546 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 547 548 if (atomic_read(&itv->capturing) == 0) { 549 int digitizer; 550 551 /* Always use frame based mode. Experiments have demonstrated that byte 552 stream based mode results in dropped frames and corruption. Not often, 553 but occasionally. Many thanks go to Leonard Orb who spent a lot of 554 effort and time trying to trace the cause of the drop outs. */ 555 /* 1 frame per DMA */ 556 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */ 557 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1); 558 559 /* Stuff from Windows, we don't know what it is */ 560 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0); 561 /* According to the docs, this should be correct. However, this is 562 untested. I don't dare enable this without having tested it. 563 Only very few old cards actually have this hardware combination. 564 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 565 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0); 566 */ 567 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415); 568 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0); 569 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1); 570 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); 571 572 /* assign placeholder */ 573 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12, 574 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); 575 576 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X)) 577 digitizer = 0xF1; 578 else if (itv->card->hw_all & IVTV_HW_SAA7114) 579 digitizer = 0xEF; 580 else /* cx25840 */ 581 digitizer = 0x140; 582 583 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer); 584 585 /* Setup VBI */ 586 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) { 587 ivtv_vbi_setup(itv); 588 } 589 590 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */ 591 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400); 592 itv->pgm_info_offset = data[0]; 593 itv->pgm_info_num = data[1]; 594 itv->pgm_info_write_idx = 0; 595 itv->pgm_info_read_idx = 0; 596 597 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n", 598 itv->pgm_info_offset, itv->pgm_info_num); 599 600 /* Setup API for Stream */ 601 cx2341x_handler_setup(&itv->cxhdl); 602 603 /* mute if capturing radio */ 604 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) 605 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, 606 1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8)); 607 } 608 609 /* Vsync Setup */ 610 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { 611 /* event notification (on) */ 612 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1); 613 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); 614 } 615 616 if (atomic_read(&itv->capturing) == 0) { 617 /* Clear all Pending Interrupts */ 618 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 619 620 clear_bit(IVTV_F_I_EOS, &itv->i_flags); 621 622 cx2341x_handler_set_busy(&itv->cxhdl, 1); 623 624 /* Initialize Digitizer for Capture */ 625 /* Avoid tinny audio problem - ensure audio clocks are going */ 626 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1); 627 /* Avoid unpredictable PCI bus hang - disable video clocks */ 628 v4l2_subdev_call(itv->sd_video, video, s_stream, 0); 629 ivtv_msleep_timeout(300, 0); 630 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0); 631 v4l2_subdev_call(itv->sd_video, video, s_stream, 1); 632 } 633 634 /* begin_capture */ 635 if (ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, captype, subtype)) 636 { 637 IVTV_DEBUG_WARN( "Error starting capture!\n"); 638 return -EINVAL; 639 } 640 641 /* Start Passthrough */ 642 if (enable_passthrough) { 643 ivtv_passthrough_mode(itv, 1); 644 } 645 646 if (s->type == IVTV_ENC_STREAM_TYPE_VBI) 647 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); 648 else 649 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 650 651 /* you're live! sit back and await interrupts :) */ 652 atomic_inc(&itv->capturing); 653 return 0; 654 } 655 EXPORT_SYMBOL(ivtv_start_v4l2_encode_stream); 656 657 static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s) 658 { 659 u32 data[CX2341X_MBOX_MAX_DATA]; 660 struct ivtv *itv = s->itv; 661 int datatype; 662 u16 width; 663 u16 height; 664 665 if (s->vdev == NULL) 666 return -EINVAL; 667 668 IVTV_DEBUG_INFO("Setting some initial decoder settings\n"); 669 670 width = itv->cxhdl.width; 671 height = itv->cxhdl.height; 672 673 /* set audio mode to left/stereo for dual/stereo mode. */ 674 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode); 675 676 /* set number of internal decoder buffers */ 677 ivtv_vapi(itv, CX2341X_DEC_SET_DISPLAY_BUFFERS, 1, 0); 678 679 /* prebuffering */ 680 ivtv_vapi(itv, CX2341X_DEC_SET_PREBUFFERING, 1, 1); 681 682 /* extract from user packets */ 683 ivtv_vapi_result(itv, data, CX2341X_DEC_EXTRACT_VBI, 1, 1); 684 itv->vbi.dec_start = data[0]; 685 686 IVTV_DEBUG_INFO("Decoder VBI RE-Insert start 0x%08x size 0x%08x\n", 687 itv->vbi.dec_start, data[1]); 688 689 /* set decoder source settings */ 690 /* Data type: 0 = mpeg from host, 691 1 = yuv from encoder, 692 2 = yuv_from_host */ 693 switch (s->type) { 694 case IVTV_DEC_STREAM_TYPE_YUV: 695 if (itv->output_mode == OUT_PASSTHROUGH) { 696 datatype = 1; 697 } else { 698 /* Fake size to avoid switching video standard */ 699 datatype = 2; 700 width = 720; 701 height = itv->is_out_50hz ? 576 : 480; 702 } 703 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype); 704 break; 705 case IVTV_DEC_STREAM_TYPE_MPG: 706 default: 707 datatype = 0; 708 break; 709 } 710 if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype, 711 width, height, itv->cxhdl.audio_properties)) { 712 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n"); 713 } 714 715 /* Decoder sometimes dies here, so wait a moment */ 716 ivtv_msleep_timeout(10, 0); 717 718 /* Known failure point for firmware, so check */ 719 return ivtv_firmware_check(itv, "ivtv_setup_v4l2_decode_stream"); 720 } 721 722 int ivtv_start_v4l2_decode_stream(struct ivtv_stream *s, int gop_offset) 723 { 724 struct ivtv *itv = s->itv; 725 int rc; 726 727 if (s->vdev == NULL) 728 return -EINVAL; 729 730 if (test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) 731 return 0; /* already started */ 732 733 IVTV_DEBUG_INFO("Starting decode stream %s (gop_offset %d)\n", s->name, gop_offset); 734 735 rc = ivtv_setup_v4l2_decode_stream(s); 736 if (rc < 0) { 737 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 738 return rc; 739 } 740 741 /* set dma size to 65536 bytes */ 742 ivtv_vapi(itv, CX2341X_DEC_SET_DMA_BLOCK_SIZE, 1, 65536); 743 744 /* Clear Streamoff */ 745 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 746 747 /* Zero out decoder counters */ 748 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[0]); 749 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[1]); 750 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[2]); 751 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA_END].data[3]); 752 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[0]); 753 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[1]); 754 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[2]); 755 writel(0, &itv->dec_mbox.mbox[IVTV_MBOX_DMA].data[3]); 756 757 /* turn on notification of dual/stereo mode change */ 758 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); 759 760 /* start playback */ 761 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, gop_offset, 0); 762 763 /* Let things settle before we actually start */ 764 ivtv_msleep_timeout(10, 0); 765 766 /* Clear the following Interrupt mask bits for decoding */ 767 ivtv_clear_irq_mask(itv, IVTV_IRQ_MASK_DECODE); 768 IVTV_DEBUG_IRQ("IRQ Mask is now: 0x%08x\n", itv->irqmask); 769 770 /* you're live! sit back and await interrupts :) */ 771 atomic_inc(&itv->decoding); 772 return 0; 773 } 774 775 void ivtv_stop_all_captures(struct ivtv *itv) 776 { 777 int i; 778 779 for (i = IVTV_MAX_STREAMS - 1; i >= 0; i--) { 780 struct ivtv_stream *s = &itv->streams[i]; 781 782 if (s->vdev == NULL) 783 continue; 784 if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { 785 ivtv_stop_v4l2_encode_stream(s, 0); 786 } 787 } 788 } 789 790 int ivtv_stop_v4l2_encode_stream(struct ivtv_stream *s, int gop_end) 791 { 792 struct ivtv *itv = s->itv; 793 DECLARE_WAITQUEUE(wait, current); 794 int cap_type; 795 int stopmode; 796 797 if (s->vdev == NULL) 798 return -EINVAL; 799 800 /* This function assumes that you are allowed to stop the capture 801 and that we are actually capturing */ 802 803 IVTV_DEBUG_INFO("Stop Capture\n"); 804 805 if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) 806 return 0; 807 if (atomic_read(&itv->capturing) == 0) 808 return 0; 809 810 switch (s->type) { 811 case IVTV_ENC_STREAM_TYPE_YUV: 812 cap_type = 1; 813 break; 814 case IVTV_ENC_STREAM_TYPE_PCM: 815 cap_type = 1; 816 break; 817 case IVTV_ENC_STREAM_TYPE_VBI: 818 cap_type = 1; 819 break; 820 case IVTV_ENC_STREAM_TYPE_MPG: 821 default: 822 cap_type = 0; 823 break; 824 } 825 826 /* Stop Capture Mode */ 827 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { 828 stopmode = 0; 829 } else { 830 stopmode = 1; 831 } 832 833 /* end_capture */ 834 /* when: 0 = end of GOP 1 = NOW!, type: 0 = mpeg, subtype: 3 = video+audio */ 835 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, stopmode, cap_type, s->subtype); 836 837 if (!test_bit(IVTV_F_S_PASSTHROUGH, &s->s_flags)) { 838 if (s->type == IVTV_ENC_STREAM_TYPE_MPG && gop_end) { 839 /* only run these if we're shutting down the last cap */ 840 unsigned long duration; 841 unsigned long then = jiffies; 842 843 add_wait_queue(&itv->eos_waitq, &wait); 844 845 set_current_state(TASK_INTERRUPTIBLE); 846 847 /* wait 2s for EOS interrupt */ 848 while (!test_bit(IVTV_F_I_EOS, &itv->i_flags) && 849 time_before(jiffies, 850 then + msecs_to_jiffies(2000))) { 851 schedule_timeout(msecs_to_jiffies(10)); 852 } 853 854 /* To convert jiffies to ms, we must multiply by 1000 855 * and divide by HZ. To avoid runtime division, we 856 * convert this to multiplication by 1000/HZ. 857 * Since integer division truncates, we get the best 858 * accuracy if we do a rounding calculation of the constant. 859 * Think of the case where HZ is 1024. 860 */ 861 duration = ((1000 + HZ / 2) / HZ) * (jiffies - then); 862 863 if (!test_bit(IVTV_F_I_EOS, &itv->i_flags)) { 864 IVTV_DEBUG_WARN("%s: EOS interrupt not received! stopping anyway.\n", s->name); 865 IVTV_DEBUG_WARN("%s: waited %lu ms.\n", s->name, duration); 866 } else { 867 IVTV_DEBUG_INFO("%s: EOS took %lu ms to occur.\n", s->name, duration); 868 } 869 set_current_state(TASK_RUNNING); 870 remove_wait_queue(&itv->eos_waitq, &wait); 871 set_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 872 } 873 874 /* Handle any pending interrupts */ 875 ivtv_msleep_timeout(100, 0); 876 } 877 878 atomic_dec(&itv->capturing); 879 880 /* Clear capture and no-read bits */ 881 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 882 883 if (s->type == IVTV_ENC_STREAM_TYPE_VBI) 884 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VBI_CAP); 885 886 if (atomic_read(&itv->capturing) > 0) { 887 return 0; 888 } 889 890 cx2341x_handler_set_busy(&itv->cxhdl, 0); 891 892 /* Set the following Interrupt mask bits for capture */ 893 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 894 del_timer(&itv->dma_timer); 895 896 /* event notification (off) */ 897 if (test_and_clear_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { 898 /* type: 0 = refresh */ 899 /* on/off: 0 = off, intr: 0x10000000, mbox_id: -1: none */ 900 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_ENC_VIM_RST, -1); 901 ivtv_set_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); 902 } 903 904 /* Raw-passthrough is implied on start. Make sure it's stopped so 905 the encoder will re-initialize when next started */ 906 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 7); 907 908 wake_up(&s->waitq); 909 910 return 0; 911 } 912 EXPORT_SYMBOL(ivtv_stop_v4l2_encode_stream); 913 914 int ivtv_stop_v4l2_decode_stream(struct ivtv_stream *s, int flags, u64 pts) 915 { 916 static const struct v4l2_event ev = { 917 .type = V4L2_EVENT_EOS, 918 }; 919 struct ivtv *itv = s->itv; 920 921 if (s->vdev == NULL) 922 return -EINVAL; 923 924 if (s->type != IVTV_DEC_STREAM_TYPE_YUV && s->type != IVTV_DEC_STREAM_TYPE_MPG) 925 return -EINVAL; 926 927 if (!test_bit(IVTV_F_S_STREAMING, &s->s_flags)) 928 return 0; 929 930 IVTV_DEBUG_INFO("Stop Decode at %llu, flags: %x\n", (unsigned long long)pts, flags); 931 932 /* Stop Decoder */ 933 if (!(flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) || pts) { 934 u32 tmp = 0; 935 936 /* Wait until the decoder is no longer running */ 937 if (pts) { 938 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 939 0, (u32)(pts & 0xffffffff), (u32)(pts >> 32)); 940 } 941 while (1) { 942 u32 data[CX2341X_MBOX_MAX_DATA]; 943 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_XFER_INFO, 0); 944 if (s->q_full.buffers + s->q_dma.buffers == 0) { 945 if (tmp == data[3]) 946 break; 947 tmp = data[3]; 948 } 949 if (ivtv_msleep_timeout(100, 1)) 950 break; 951 } 952 } 953 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, flags & V4L2_DEC_CMD_STOP_TO_BLACK, 0, 0); 954 955 /* turn off notification of dual/stereo mode change */ 956 ivtv_vapi(itv, CX2341X_DEC_SET_EVENT_NOTIFICATION, 4, 0, 0, IVTV_IRQ_DEC_AUD_MODE_CHG, -1); 957 958 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_DECODE); 959 del_timer(&itv->dma_timer); 960 961 clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); 962 clear_bit(IVTV_F_S_STREAMING, &s->s_flags); 963 ivtv_flush_queues(s); 964 965 /* decoder needs time to settle */ 966 ivtv_msleep_timeout(40, 0); 967 968 /* decrement decoding */ 969 atomic_dec(&itv->decoding); 970 971 set_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags); 972 wake_up(&itv->event_waitq); 973 v4l2_event_queue(s->vdev, &ev); 974 975 /* wake up wait queues */ 976 wake_up(&s->waitq); 977 978 return 0; 979 } 980 981 int ivtv_passthrough_mode(struct ivtv *itv, int enable) 982 { 983 struct ivtv_stream *yuv_stream = &itv->streams[IVTV_ENC_STREAM_TYPE_YUV]; 984 struct ivtv_stream *dec_stream = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; 985 986 if (yuv_stream->vdev == NULL || dec_stream->vdev == NULL) 987 return -EINVAL; 988 989 IVTV_DEBUG_INFO("ivtv ioctl: Select passthrough mode\n"); 990 991 /* Prevent others from starting/stopping streams while we 992 initiate/terminate passthrough mode */ 993 if (enable) { 994 if (itv->output_mode == OUT_PASSTHROUGH) { 995 return 0; 996 } 997 if (ivtv_set_output_mode(itv, OUT_PASSTHROUGH) != OUT_PASSTHROUGH) 998 return -EBUSY; 999 1000 /* Fully initialize stream, and then unflag init */ 1001 set_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); 1002 set_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); 1003 1004 /* Setup YUV Decoder */ 1005 ivtv_setup_v4l2_decode_stream(dec_stream); 1006 1007 /* Start Decoder */ 1008 ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1); 1009 atomic_inc(&itv->decoding); 1010 1011 /* Setup capture if not already done */ 1012 if (atomic_read(&itv->capturing) == 0) { 1013 cx2341x_handler_setup(&itv->cxhdl); 1014 cx2341x_handler_set_busy(&itv->cxhdl, 1); 1015 } 1016 1017 /* Start Passthrough Mode */ 1018 ivtv_vapi(itv, CX2341X_ENC_START_CAPTURE, 2, 2, 11); 1019 atomic_inc(&itv->capturing); 1020 return 0; 1021 } 1022 1023 if (itv->output_mode != OUT_PASSTHROUGH) 1024 return 0; 1025 1026 /* Stop Passthrough Mode */ 1027 ivtv_vapi(itv, CX2341X_ENC_STOP_CAPTURE, 3, 1, 2, 11); 1028 ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 3, 1, 0, 0); 1029 1030 atomic_dec(&itv->capturing); 1031 atomic_dec(&itv->decoding); 1032 clear_bit(IVTV_F_S_PASSTHROUGH, &dec_stream->s_flags); 1033 clear_bit(IVTV_F_S_STREAMING, &dec_stream->s_flags); 1034 itv->output_mode = OUT_NONE; 1035 if (atomic_read(&itv->capturing) == 0) 1036 cx2341x_handler_set_busy(&itv->cxhdl, 0); 1037 1038 return 0; 1039 } 1040