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 #ifdef CONFIG_COMPAT 55 .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ 56 #endif 57 .release = ivtv_v4l2_close, 58 .poll = ivtv_v4l2_enc_poll, 59 }; 60 61 static const struct v4l2_file_operations ivtv_v4l2_dec_fops = { 62 .owner = THIS_MODULE, 63 .read = ivtv_v4l2_read, 64 .write = ivtv_v4l2_write, 65 .open = ivtv_v4l2_open, 66 .unlocked_ioctl = video_ioctl2, 67 #ifdef CONFIG_COMPAT 68 .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ 69 #endif 70 .release = ivtv_v4l2_close, 71 .poll = ivtv_v4l2_dec_poll, 72 }; 73 74 static const struct v4l2_file_operations ivtv_v4l2_radio_fops = { 75 .owner = THIS_MODULE, 76 .open = ivtv_v4l2_open, 77 .unlocked_ioctl = video_ioctl2, 78 #ifdef CONFIG_COMPAT 79 .compat_ioctl32 = video_ioctl2, /* for ivtv_default() */ 80 #endif 81 .release = ivtv_v4l2_close, 82 .poll = ivtv_v4l2_enc_poll, 83 }; 84 85 #define IVTV_V4L2_DEC_MPG_OFFSET 16 /* offset from 0 to register decoder mpg v4l2 minors on */ 86 #define IVTV_V4L2_ENC_PCM_OFFSET 24 /* offset from 0 to register pcm v4l2 minors on */ 87 #define IVTV_V4L2_ENC_YUV_OFFSET 32 /* offset from 0 to register yuv v4l2 minors on */ 88 #define IVTV_V4L2_DEC_YUV_OFFSET 48 /* offset from 0 to register decoder yuv v4l2 minors on */ 89 #define IVTV_V4L2_DEC_VBI_OFFSET 8 /* offset from 0 to register decoder vbi input v4l2 minors on */ 90 #define IVTV_V4L2_DEC_VOUT_OFFSET 16 /* offset from 0 to register vbi output v4l2 minors on */ 91 92 static struct { 93 const char *name; 94 int vfl_type; 95 int num_offset; 96 int dma, pio; 97 u32 v4l2_caps; 98 const struct v4l2_file_operations *fops; 99 } ivtv_stream_info[] = { 100 { /* IVTV_ENC_STREAM_TYPE_MPG */ 101 "encoder MPG", 102 VFL_TYPE_VIDEO, 0, 103 DMA_FROM_DEVICE, 0, 104 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | 105 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 106 &ivtv_v4l2_enc_fops 107 }, 108 { /* IVTV_ENC_STREAM_TYPE_YUV */ 109 "encoder YUV", 110 VFL_TYPE_VIDEO, IVTV_V4L2_ENC_YUV_OFFSET, 111 DMA_FROM_DEVICE, 0, 112 V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | 113 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 114 &ivtv_v4l2_enc_fops 115 }, 116 { /* IVTV_ENC_STREAM_TYPE_VBI */ 117 "encoder VBI", 118 VFL_TYPE_VBI, 0, 119 DMA_FROM_DEVICE, 0, 120 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_TUNER | 121 V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 122 &ivtv_v4l2_enc_fops 123 }, 124 { /* IVTV_ENC_STREAM_TYPE_PCM */ 125 "encoder PCM", 126 VFL_TYPE_VIDEO, IVTV_V4L2_ENC_PCM_OFFSET, 127 DMA_FROM_DEVICE, 0, 128 V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 129 &ivtv_v4l2_enc_fops 130 }, 131 { /* IVTV_ENC_STREAM_TYPE_RAD */ 132 "encoder radio", 133 VFL_TYPE_RADIO, 0, 134 DMA_NONE, 1, 135 V4L2_CAP_RADIO | V4L2_CAP_TUNER, 136 &ivtv_v4l2_radio_fops 137 }, 138 { /* IVTV_DEC_STREAM_TYPE_MPG */ 139 "decoder MPG", 140 VFL_TYPE_VIDEO, IVTV_V4L2_DEC_MPG_OFFSET, 141 DMA_TO_DEVICE, 0, 142 V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 143 &ivtv_v4l2_dec_fops 144 }, 145 { /* IVTV_DEC_STREAM_TYPE_VBI */ 146 "decoder VBI", 147 VFL_TYPE_VBI, IVTV_V4L2_DEC_VBI_OFFSET, 148 DMA_NONE, 1, 149 V4L2_CAP_SLICED_VBI_CAPTURE | V4L2_CAP_READWRITE, 150 &ivtv_v4l2_enc_fops 151 }, 152 { /* IVTV_DEC_STREAM_TYPE_VOUT */ 153 "decoder VOUT", 154 VFL_TYPE_VBI, IVTV_V4L2_DEC_VOUT_OFFSET, 155 DMA_NONE, 1, 156 V4L2_CAP_SLICED_VBI_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 157 &ivtv_v4l2_dec_fops 158 }, 159 { /* IVTV_DEC_STREAM_TYPE_YUV */ 160 "decoder YUV", 161 VFL_TYPE_VIDEO, IVTV_V4L2_DEC_YUV_OFFSET, 162 DMA_TO_DEVICE, 0, 163 V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_AUDIO | V4L2_CAP_READWRITE, 164 &ivtv_v4l2_dec_fops 165 } 166 }; 167 168 static void ivtv_stream_init(struct ivtv *itv, int type) 169 { 170 struct ivtv_stream *s = &itv->streams[type]; 171 172 /* we need to keep vdev, so restore it afterwards */ 173 memset(s, 0, sizeof(*s)); 174 175 /* initialize ivtv_stream fields */ 176 s->itv = itv; 177 s->type = type; 178 s->name = ivtv_stream_info[type].name; 179 s->vdev.device_caps = ivtv_stream_info[type].v4l2_caps; 180 181 if (ivtv_stream_info[type].pio) 182 s->dma = DMA_NONE; 183 else 184 s->dma = ivtv_stream_info[type].dma; 185 s->buf_size = itv->stream_buf_size[type]; 186 if (s->buf_size) 187 s->buffers = (itv->options.kilobytes[type] * 1024 + s->buf_size - 1) / s->buf_size; 188 spin_lock_init(&s->qlock); 189 init_waitqueue_head(&s->waitq); 190 s->sg_handle = IVTV_DMA_UNMAPPED; 191 ivtv_queue_init(&s->q_free); 192 ivtv_queue_init(&s->q_full); 193 ivtv_queue_init(&s->q_dma); 194 ivtv_queue_init(&s->q_predma); 195 ivtv_queue_init(&s->q_io); 196 } 197 198 static int ivtv_prep_dev(struct ivtv *itv, int type) 199 { 200 struct ivtv_stream *s = &itv->streams[type]; 201 int num_offset = ivtv_stream_info[type].num_offset; 202 int num = itv->instance + ivtv_first_minor + num_offset; 203 204 /* These four fields are always initialized. If vdev.v4l2_dev == NULL, then 205 this stream is not in use. In that case no other fields but these 206 four can be used. */ 207 s->vdev.v4l2_dev = NULL; 208 s->itv = itv; 209 s->type = type; 210 s->name = ivtv_stream_info[type].name; 211 212 /* Check whether the radio is supported */ 213 if (type == IVTV_ENC_STREAM_TYPE_RAD && !(itv->v4l2_cap & V4L2_CAP_RADIO)) 214 return 0; 215 if (type >= IVTV_DEC_STREAM_TYPE_MPG && !(itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)) 216 return 0; 217 218 /* User explicitly selected 0 buffers for these streams, so don't 219 create them. */ 220 if (ivtv_stream_info[type].dma != DMA_NONE && 221 itv->options.kilobytes[type] == 0) { 222 IVTV_INFO("Disabled %s device\n", ivtv_stream_info[type].name); 223 return 0; 224 } 225 226 ivtv_stream_init(itv, type); 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_empty; 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 ivtv_set_funcs(&s->vdev); 255 return 0; 256 } 257 258 /* Initialize v4l2 variables and prepare v4l2 devices */ 259 int ivtv_streams_setup(struct ivtv *itv) 260 { 261 int type; 262 263 /* Setup V4L2 Devices */ 264 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 265 /* Prepare device */ 266 if (ivtv_prep_dev(itv, type)) 267 break; 268 269 if (itv->streams[type].vdev.v4l2_dev == NULL) 270 continue; 271 272 /* Allocate Stream */ 273 if (ivtv_stream_alloc(&itv->streams[type])) 274 break; 275 } 276 if (type == IVTV_MAX_STREAMS) 277 return 0; 278 279 /* One or more streams could not be initialized. Clean 'em all up. */ 280 ivtv_streams_cleanup(itv); 281 return -ENOMEM; 282 } 283 284 static int ivtv_reg_dev(struct ivtv *itv, int type) 285 { 286 struct ivtv_stream *s = &itv->streams[type]; 287 int vfl_type = ivtv_stream_info[type].vfl_type; 288 const char *name; 289 int num; 290 291 if (s->vdev.v4l2_dev == NULL) 292 return 0; 293 294 num = s->vdev.num; 295 /* card number + user defined offset + device offset */ 296 if (type != IVTV_ENC_STREAM_TYPE_MPG) { 297 struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG]; 298 299 if (s_mpg->vdev.v4l2_dev) 300 num = s_mpg->vdev.num + ivtv_stream_info[type].num_offset; 301 } 302 if (itv->osd_video_pbase && (type == IVTV_DEC_STREAM_TYPE_YUV || 303 type == IVTV_DEC_STREAM_TYPE_MPG)) { 304 s->vdev.device_caps |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY; 305 itv->v4l2_cap |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY; 306 } 307 video_set_drvdata(&s->vdev, s); 308 309 /* Register device. First try the desired minor, then any free one. */ 310 if (video_register_device_no_warn(&s->vdev, vfl_type, num)) { 311 IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", 312 s->name, num); 313 return -ENOMEM; 314 } 315 name = video_device_node_name(&s->vdev); 316 317 switch (vfl_type) { 318 case VFL_TYPE_VIDEO: 319 IVTV_INFO("Registered device %s for %s (%d kB)\n", 320 name, s->name, itv->options.kilobytes[type]); 321 break; 322 case VFL_TYPE_RADIO: 323 IVTV_INFO("Registered device %s for %s\n", 324 name, s->name); 325 break; 326 case VFL_TYPE_VBI: 327 if (itv->options.kilobytes[type]) 328 IVTV_INFO("Registered device %s for %s (%d kB)\n", 329 name, s->name, itv->options.kilobytes[type]); 330 else 331 IVTV_INFO("Registered device %s for %s\n", 332 name, s->name); 333 break; 334 } 335 return 0; 336 } 337 338 /* Register v4l2 devices */ 339 int ivtv_streams_register(struct ivtv *itv) 340 { 341 int type; 342 int err = 0; 343 344 /* Register V4L2 devices */ 345 for (type = 0; type < IVTV_MAX_STREAMS; type++) 346 err |= ivtv_reg_dev(itv, type); 347 348 if (err == 0) 349 return 0; 350 351 /* One or more streams could not be initialized. Clean 'em all up. */ 352 ivtv_streams_cleanup(itv); 353 return -ENOMEM; 354 } 355 356 /* Unregister v4l2 devices */ 357 void ivtv_streams_cleanup(struct ivtv *itv) 358 { 359 int type; 360 361 /* Teardown all streams */ 362 for (type = 0; type < IVTV_MAX_STREAMS; type++) { 363 struct video_device *vdev = &itv->streams[type].vdev; 364 365 if (vdev->v4l2_dev == NULL) 366 continue; 367 368 video_unregister_device(vdev); 369 ivtv_stream_free(&itv->streams[type]); 370 itv->streams[type].vdev.v4l2_dev = NULL; 371 } 372 } 373 374 static void ivtv_vbi_setup(struct ivtv *itv) 375 { 376 int raw = ivtv_raw_vbi(itv); 377 u32 data[CX2341X_MBOX_MAX_DATA]; 378 int lines; 379 int i; 380 381 /* Reset VBI */ 382 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, 0xffff , 0, 0, 0, 0); 383 384 /* setup VBI registers */ 385 if (raw) 386 v4l2_subdev_call(itv->sd_video, vbi, s_raw_fmt, &itv->vbi.in.fmt.vbi); 387 else 388 v4l2_subdev_call(itv->sd_video, vbi, s_sliced_fmt, &itv->vbi.in.fmt.sliced); 389 390 /* determine number of lines and total number of VBI bytes. 391 A raw line takes 1443 bytes: 2 * 720 + 4 byte frame header - 1 392 The '- 1' byte is probably an unused U or V byte. Or something... 393 A sliced line takes 51 bytes: 4 byte frame header, 4 byte internal 394 header, 42 data bytes + checksum (to be confirmed) */ 395 if (raw) { 396 lines = itv->vbi.count * 2; 397 } else { 398 lines = itv->is_60hz ? 24 : 38; 399 if (itv->is_60hz && (itv->hw_flags & IVTV_HW_CX25840)) 400 lines += 2; 401 } 402 403 itv->vbi.enc_size = lines * (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 404 405 /* Note: sliced vs raw flag doesn't seem to have any effect 406 TODO: check mode (0x02) value with older ivtv versions. */ 407 data[0] = raw | 0x02 | (0xbd << 8); 408 409 /* Every X number of frames a VBI interrupt arrives (frames as in 25 or 30 fps) */ 410 data[1] = 1; 411 /* The VBI frames are stored in a ringbuffer with this size (with a VBI frame as unit) */ 412 data[2] = raw ? 4 : 4 * (itv->vbi.raw_size / itv->vbi.enc_size); 413 /* The start/stop codes determine which VBI lines end up in the raw VBI data area. 414 The codes are from table 24 in the saa7115 datasheet. Each raw/sliced/video line 415 is framed with codes FF0000XX where XX is the SAV/EAV (Start/End of Active Video) 416 code. These values for raw VBI are obtained from a driver disassembly. The sliced 417 start/stop codes was deduced from this, but they do not appear in the driver. 418 Other code pairs that I found are: 0x250E6249/0x13545454 and 0x25256262/0x38137F54. 419 However, I have no idea what these values are for. */ 420 if (itv->hw_flags & IVTV_HW_CX25840) { 421 /* Setup VBI for the cx25840 digitizer */ 422 if (raw) { 423 data[3] = 0x20602060; 424 data[4] = 0x30703070; 425 } else { 426 data[3] = 0xB0F0B0F0; 427 data[4] = 0xA0E0A0E0; 428 } 429 /* Lines per frame */ 430 data[5] = lines; 431 /* bytes per line */ 432 data[6] = (raw ? itv->vbi.raw_size : itv->vbi.sliced_size); 433 } else { 434 /* Setup VBI for the saa7115 digitizer */ 435 if (raw) { 436 data[3] = 0x25256262; 437 data[4] = 0x387F7F7F; 438 } else { 439 data[3] = 0xABABECEC; 440 data[4] = 0xB6F1F1F1; 441 } 442 /* Lines per frame */ 443 data[5] = lines; 444 /* bytes per line */ 445 data[6] = itv->vbi.enc_size / lines; 446 } 447 448 IVTV_DEBUG_INFO( 449 "Setup VBI API header 0x%08x pkts %d buffs %d ln %d sz %d\n", 450 data[0], data[1], data[2], data[5], data[6]); 451 452 ivtv_api(itv, CX2341X_ENC_SET_VBI_CONFIG, 7, data); 453 454 /* returns the VBI encoder memory area. */ 455 itv->vbi.enc_start = data[2]; 456 itv->vbi.fpi = data[0]; 457 if (!itv->vbi.fpi) 458 itv->vbi.fpi = 1; 459 460 IVTV_DEBUG_INFO("Setup VBI start 0x%08x frames %d fpi %d\n", 461 itv->vbi.enc_start, data[1], itv->vbi.fpi); 462 463 /* select VBI lines. 464 Note that the sliced argument seems to have no effect. */ 465 for (i = 2; i <= 24; i++) { 466 int valid; 467 468 if (itv->is_60hz) { 469 valid = i >= 10 && i < 22; 470 } else { 471 valid = i >= 6 && i < 24; 472 } 473 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, i - 1, 474 valid, 0 , 0, 0); 475 ivtv_vapi(itv, CX2341X_ENC_SET_VBI_LINE, 5, (i - 1) | 0x80000000, 476 valid, 0, 0, 0); 477 } 478 479 /* Remaining VBI questions: 480 - Is it possible to select particular VBI lines only for inclusion in the MPEG 481 stream? Currently you can only get the first X lines. 482 - Is mixed raw and sliced VBI possible? 483 - What's the meaning of the raw/sliced flag? 484 - What's the meaning of params 2, 3 & 4 of the Select VBI command? */ 485 } 486 487 int ivtv_start_v4l2_encode_stream(struct ivtv_stream *s) 488 { 489 u32 data[CX2341X_MBOX_MAX_DATA]; 490 struct ivtv *itv = s->itv; 491 int captype = 0, subtype = 0; 492 int enable_passthrough = 0; 493 494 if (s->vdev.v4l2_dev == NULL) 495 return -EINVAL; 496 497 IVTV_DEBUG_INFO("Start encoder stream %s\n", s->name); 498 499 switch (s->type) { 500 case IVTV_ENC_STREAM_TYPE_MPG: 501 captype = 0; 502 subtype = 3; 503 504 /* Stop Passthrough */ 505 if (itv->output_mode == OUT_PASSTHROUGH) { 506 ivtv_passthrough_mode(itv, 0); 507 enable_passthrough = 1; 508 } 509 itv->mpg_data_received = itv->vbi_data_inserted = 0; 510 itv->dualwatch_jiffies = jiffies; 511 itv->dualwatch_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode); 512 itv->search_pack_header = 0; 513 break; 514 515 case IVTV_ENC_STREAM_TYPE_YUV: 516 if (itv->output_mode == OUT_PASSTHROUGH) { 517 captype = 2; 518 subtype = 11; /* video+audio+decoder */ 519 break; 520 } 521 captype = 1; 522 subtype = 1; 523 break; 524 case IVTV_ENC_STREAM_TYPE_PCM: 525 captype = 1; 526 subtype = 2; 527 break; 528 case IVTV_ENC_STREAM_TYPE_VBI: 529 captype = 1; 530 subtype = 4; 531 532 itv->vbi.frame = 0; 533 itv->vbi.inserted_frame = 0; 534 memset(itv->vbi.sliced_mpeg_size, 535 0, sizeof(itv->vbi.sliced_mpeg_size)); 536 break; 537 default: 538 return -EINVAL; 539 } 540 s->subtype = subtype; 541 s->buffers_stolen = 0; 542 543 /* Clear Streamoff flags in case left from last capture */ 544 clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); 545 546 if (atomic_read(&itv->capturing) == 0) { 547 int digitizer; 548 549 /* Always use frame based mode. Experiments have demonstrated that byte 550 stream based mode results in dropped frames and corruption. Not often, 551 but occasionally. Many thanks go to Leonard Orb who spent a lot of 552 effort and time trying to trace the cause of the drop outs. */ 553 /* 1 frame per DMA */ 554 /*ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 128, 0); */ 555 ivtv_vapi(itv, CX2341X_ENC_SET_DMA_BLOCK_SIZE, 2, 1, 1); 556 557 /* Stuff from Windows, we don't know what it is */ 558 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 0); 559 /* According to the docs, this should be correct. However, this is 560 untested. I don't dare enable this without having tested it. 561 Only very few old cards actually have this hardware combination. 562 ivtv_vapi(itv, CX2341X_ENC_SET_VERT_CROP_LINE, 1, 563 ((itv->hw_flags & IVTV_HW_SAA7114) && itv->is_60hz) ? 10001 : 0); 564 */ 565 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 3, !itv->has_cx23415); 566 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 8, 0); 567 ivtv_vapi(itv, CX2341X_ENC_MISC, 2, 4, 1); 568 ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); 569 570 /* assign placeholder */ 571 ivtv_vapi(itv, CX2341X_ENC_SET_PLACEHOLDER, 12, 572 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); 573 574 if (itv->card->hw_all & (IVTV_HW_SAA7115 | IVTV_HW_SAA717X)) 575 digitizer = 0xF1; 576 else if (itv->card->hw_all & IVTV_HW_SAA7114) 577 digitizer = 0xEF; 578 else /* cx25840 */ 579 digitizer = 0x140; 580 581 ivtv_vapi(itv, CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, digitizer, digitizer); 582 583 /* Setup VBI */ 584 if (itv->v4l2_cap & V4L2_CAP_VBI_CAPTURE) { 585 ivtv_vbi_setup(itv); 586 } 587 588 /* assign program index info. Mask 7: select I/P/B, Num_req: 400 max */ 589 ivtv_vapi_result(itv, data, CX2341X_ENC_SET_PGM_INDEX_INFO, 2, 7, 400); 590 itv->pgm_info_offset = data[0]; 591 itv->pgm_info_num = data[1]; 592 itv->pgm_info_write_idx = 0; 593 itv->pgm_info_read_idx = 0; 594 595 IVTV_DEBUG_INFO("PGM Index at 0x%08x with %d elements\n", 596 itv->pgm_info_offset, itv->pgm_info_num); 597 598 /* Setup API for Stream */ 599 cx2341x_handler_setup(&itv->cxhdl); 600 601 /* mute if capturing radio */ 602 if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) 603 ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, 604 1 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8)); 605 } 606 607 /* Vsync Setup */ 608 if (itv->has_cx23415 && !test_and_set_bit(IVTV_F_I_DIG_RST, &itv->i_flags)) { 609 /* event notification (on) */ 610 ivtv_vapi(itv, CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, 0, 1, IVTV_IRQ_ENC_VIM_RST, -1); 611 ivtv_clear_irq_mask(itv, IVTV_IRQ_ENC_VIM_RST); 612 } 613 614 if (atomic_read(&itv->capturing) == 0) { 615 /* Clear all Pending Interrupts */ 616 ivtv_set_irq_mask(itv, IVTV_IRQ_MASK_CAPTURE); 617 618 clear_bit(IVTV_F_I_EOS, &itv->i_flags); 619 620 cx2341x_handler_set_busy(&itv->cxhdl, 1); 621 622 /* Initialize Digitizer for Capture */ 623 /* Avoid tinny audio problem - ensure audio clocks are going */ 624 v4l2_subdev_call(itv->sd_audio, audio, s_stream, 1); 625 /* Avoid unpredictable PCI bus hang - disable video clocks */ 626 if (itv->sd_video_is_streaming) 627 v4l2_subdev_call(itv->sd_video, video, s_stream, 0); 628 ivtv_msleep_timeout(300, 0); 629 ivtv_vapi(itv, CX2341X_ENC_INITIALIZE_INPUT, 0); 630 v4l2_subdev_call(itv->sd_video, video, s_stream, 1); 631 itv->sd_video_is_streaming = true; 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.v4l2_dev == 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.v4l2_dev == 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.v4l2_dev == 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.v4l2_dev == 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.v4l2_dev == 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.v4l2_dev == NULL || dec_stream->vdev.v4l2_dev == 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