1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Driver for the NXP SAA7164 PCIe bridge 4 * 5 * Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com> 6 */ 7 8#include "saa7164.h" 9 10#define ENCODER_MAX_BITRATE 6500000 11#define ENCODER_MIN_BITRATE 1000000 12#define ENCODER_DEF_BITRATE 5000000 13 14/* 15 * This is a dummy non-zero value for the sizeimage field of v4l2_pix_format. 16 * It is not actually used for anything since this driver does not support 17 * stream I/O, only read(), and because this driver produces an MPEG stream 18 * and not discrete frames. But the V4L2 spec doesn't allow for this value 19 * to be 0, so set it to 0x10000 instead. 20 * 21 * If we ever change this driver to support stream I/O, then this field 22 * will be the size of the streaming buffers. 23 */ 24#define SAA7164_SIZEIMAGE (0x10000) 25 26static struct saa7164_tvnorm saa7164_tvnorms[] = { 27 { 28 .name = "NTSC-M", 29 .id = V4L2_STD_NTSC_M, 30 }, { 31 .name = "NTSC-JP", 32 .id = V4L2_STD_NTSC_M_JP, 33 } 34}; 35 36/* Take the encoder configuration form the port struct and 37 * flush it to the hardware. 38 */ 39static void saa7164_encoder_configure(struct saa7164_port *port) 40{ 41 struct saa7164_dev *dev = port->dev; 42 dprintk(DBGLVL_ENC, "%s()\n", __func__); 43 44 port->encoder_params.width = port->width; 45 port->encoder_params.height = port->height; 46 port->encoder_params.is_50hz = 47 (port->encodernorm.id & V4L2_STD_625_50) != 0; 48 49 /* Set up the DIF (enable it) for analog mode by default */ 50 saa7164_api_initialize_dif(port); 51 52 /* Configure the correct video standard */ 53 saa7164_api_configure_dif(port, port->encodernorm.id); 54 55 /* Ensure the audio decoder is correct configured */ 56 saa7164_api_set_audio_std(port); 57} 58 59static int saa7164_encoder_buffers_dealloc(struct saa7164_port *port) 60{ 61 struct list_head *c, *n, *p, *q, *l, *v; 62 struct saa7164_dev *dev = port->dev; 63 struct saa7164_buffer *buf; 64 struct saa7164_user_buffer *ubuf; 65 66 /* Remove any allocated buffers */ 67 mutex_lock(&port->dmaqueue_lock); 68 69 dprintk(DBGLVL_ENC, "%s(port=%d) dmaqueue\n", __func__, port->nr); 70 list_for_each_safe(c, n, &port->dmaqueue.list) { 71 buf = list_entry(c, struct saa7164_buffer, list); 72 list_del(c); 73 saa7164_buffer_dealloc(buf); 74 } 75 76 dprintk(DBGLVL_ENC, "%s(port=%d) used\n", __func__, port->nr); 77 list_for_each_safe(p, q, &port->list_buf_used.list) { 78 ubuf = list_entry(p, struct saa7164_user_buffer, list); 79 list_del(p); 80 saa7164_buffer_dealloc_user(ubuf); 81 } 82 83 dprintk(DBGLVL_ENC, "%s(port=%d) free\n", __func__, port->nr); 84 list_for_each_safe(l, v, &port->list_buf_free.list) { 85 ubuf = list_entry(l, struct saa7164_user_buffer, list); 86 list_del(l); 87 saa7164_buffer_dealloc_user(ubuf); 88 } 89 90 mutex_unlock(&port->dmaqueue_lock); 91 dprintk(DBGLVL_ENC, "%s(port=%d) done\n", __func__, port->nr); 92 93 return 0; 94} 95 96/* Dynamic buffer switch at encoder start time */ 97static int saa7164_encoder_buffers_alloc(struct saa7164_port *port) 98{ 99 struct saa7164_dev *dev = port->dev; 100 struct saa7164_buffer *buf; 101 struct saa7164_user_buffer *ubuf; 102 struct tmHWStreamParameters *params = &port->hw_streamingparams; 103 int result = -ENODEV, i; 104 int len = 0; 105 106 dprintk(DBGLVL_ENC, "%s()\n", __func__); 107 108 if (port->encoder_params.stream_type == 109 V4L2_MPEG_STREAM_TYPE_MPEG2_PS) { 110 dprintk(DBGLVL_ENC, 111 "%s() type=V4L2_MPEG_STREAM_TYPE_MPEG2_PS\n", 112 __func__); 113 params->samplesperline = 128; 114 params->numberoflines = 256; 115 params->pitch = 128; 116 params->numpagetables = 2 + 117 ((SAA7164_PS_NUMBER_OF_LINES * 128) / PAGE_SIZE); 118 } else 119 if (port->encoder_params.stream_type == 120 V4L2_MPEG_STREAM_TYPE_MPEG2_TS) { 121 dprintk(DBGLVL_ENC, 122 "%s() type=V4L2_MPEG_STREAM_TYPE_MPEG2_TS\n", 123 __func__); 124 params->samplesperline = 188; 125 params->numberoflines = 312; 126 params->pitch = 188; 127 params->numpagetables = 2 + 128 ((SAA7164_TS_NUMBER_OF_LINES * 188) / PAGE_SIZE); 129 } else 130 BUG(); 131 132 /* Init and establish defaults */ 133 params->bitspersample = 8; 134 params->linethreshold = 0; 135 params->pagetablelistvirt = NULL; 136 params->pagetablelistphys = NULL; 137 params->numpagetableentries = port->hwcfg.buffercount; 138 139 /* Allocate the PCI resources, buffers (hard) */ 140 for (i = 0; i < port->hwcfg.buffercount; i++) { 141 buf = saa7164_buffer_alloc(port, 142 params->numberoflines * 143 params->pitch); 144 145 if (!buf) { 146 printk(KERN_ERR "%s() failed (errno = %d), unable to allocate buffer\n", 147 __func__, result); 148 result = -ENOMEM; 149 goto failed; 150 } else { 151 152 mutex_lock(&port->dmaqueue_lock); 153 list_add_tail(&buf->list, &port->dmaqueue.list); 154 mutex_unlock(&port->dmaqueue_lock); 155 156 } 157 } 158 159 /* Allocate some kernel buffers for copying 160 * to userpsace. 161 */ 162 len = params->numberoflines * params->pitch; 163 164 if (encoder_buffers < 16) 165 encoder_buffers = 16; 166 if (encoder_buffers > 512) 167 encoder_buffers = 512; 168 169 for (i = 0; i < encoder_buffers; i++) { 170 171 ubuf = saa7164_buffer_alloc_user(dev, len); 172 if (ubuf) { 173 mutex_lock(&port->dmaqueue_lock); 174 list_add_tail(&ubuf->list, &port->list_buf_free.list); 175 mutex_unlock(&port->dmaqueue_lock); 176 } 177 178 } 179 180 result = 0; 181 182failed: 183 return result; 184} 185 186static int saa7164_encoder_initialize(struct saa7164_port *port) 187{ 188 saa7164_encoder_configure(port); 189 return 0; 190} 191 192/* -- V4L2 --------------------------------------------------------- */ 193int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id) 194{ 195 struct saa7164_dev *dev = port->dev; 196 unsigned int i; 197 198 dprintk(DBGLVL_ENC, "%s(id=0x%x)\n", __func__, (u32)id); 199 200 for (i = 0; i < ARRAY_SIZE(saa7164_tvnorms); i++) { 201 if (id & saa7164_tvnorms[i].id) 202 break; 203 } 204 if (i == ARRAY_SIZE(saa7164_tvnorms)) 205 return -EINVAL; 206 207 port->encodernorm = saa7164_tvnorms[i]; 208 port->std = id; 209 210 /* Update the audio decoder while is not running in 211 * auto detect mode. 212 */ 213 saa7164_api_set_audio_std(port); 214 215 dprintk(DBGLVL_ENC, "%s(id=0x%x) OK\n", __func__, (u32)id); 216 217 return 0; 218} 219 220static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) 221{ 222 struct saa7164_encoder_fh *fh = file->private_data; 223 224 return saa7164_s_std(fh->port, id); 225} 226 227int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id) 228{ 229 *id = port->std; 230 return 0; 231} 232 233static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id) 234{ 235 struct saa7164_encoder_fh *fh = file->private_data; 236 237 return saa7164_g_std(fh->port, id); 238} 239 240int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i) 241{ 242 static const char * const inputs[] = { 243 "tuner", "composite", "svideo", "aux", 244 "composite 2", "svideo 2", "aux 2" 245 }; 246 int n; 247 248 if (i->index >= 7) 249 return -EINVAL; 250 251 strscpy(i->name, inputs[i->index], sizeof(i->name)); 252 253 if (i->index == 0) 254 i->type = V4L2_INPUT_TYPE_TUNER; 255 else 256 i->type = V4L2_INPUT_TYPE_CAMERA; 257 258 for (n = 0; n < ARRAY_SIZE(saa7164_tvnorms); n++) 259 i->std |= saa7164_tvnorms[n].id; 260 261 return 0; 262} 263 264int saa7164_g_input(struct saa7164_port *port, unsigned int *i) 265{ 266 struct saa7164_dev *dev = port->dev; 267 268 if (saa7164_api_get_videomux(port) != SAA_OK) 269 return -EIO; 270 271 *i = (port->mux_input - 1); 272 273 dprintk(DBGLVL_ENC, "%s() input=%d\n", __func__, *i); 274 275 return 0; 276} 277 278static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) 279{ 280 struct saa7164_encoder_fh *fh = file->private_data; 281 282 return saa7164_g_input(fh->port, i); 283} 284 285int saa7164_s_input(struct saa7164_port *port, unsigned int i) 286{ 287 struct saa7164_dev *dev = port->dev; 288 289 dprintk(DBGLVL_ENC, "%s() input=%d\n", __func__, i); 290 291 if (i >= 7) 292 return -EINVAL; 293 294 port->mux_input = i + 1; 295 296 if (saa7164_api_set_videomux(port) != SAA_OK) 297 return -EIO; 298 299 return 0; 300} 301 302static int vidioc_s_input(struct file *file, void *priv, unsigned int i) 303{ 304 struct saa7164_encoder_fh *fh = file->private_data; 305 306 return saa7164_s_input(fh->port, i); 307} 308 309int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) 310{ 311 struct saa7164_encoder_fh *fh = file->private_data; 312 struct saa7164_port *port = fh->port; 313 struct saa7164_dev *dev = port->dev; 314 315 if (0 != t->index) 316 return -EINVAL; 317 318 strscpy(t->name, "tuner", sizeof(t->name)); 319 t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO; 320 t->rangelow = SAA7164_TV_MIN_FREQ; 321 t->rangehigh = SAA7164_TV_MAX_FREQ; 322 323 dprintk(DBGLVL_ENC, "VIDIOC_G_TUNER: tuner type %d\n", t->type); 324 325 return 0; 326} 327 328int saa7164_s_tuner(struct file *file, void *priv, 329 const struct v4l2_tuner *t) 330{ 331 if (0 != t->index) 332 return -EINVAL; 333 334 /* Update the A/V core */ 335 return 0; 336} 337 338int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f) 339{ 340 if (f->tuner) 341 return -EINVAL; 342 343 f->frequency = port->freq; 344 return 0; 345} 346 347static int vidioc_g_frequency(struct file *file, void *priv, 348 struct v4l2_frequency *f) 349{ 350 struct saa7164_encoder_fh *fh = file->private_data; 351 352 return saa7164_g_frequency(fh->port, f); 353} 354 355int saa7164_s_frequency(struct saa7164_port *port, 356 const struct v4l2_frequency *f) 357{ 358 struct saa7164_dev *dev = port->dev; 359 struct saa7164_port *tsport; 360 struct dvb_frontend *fe; 361 362 /* TODO: Pull this for the std */ 363 struct analog_parameters params = { 364 .mode = V4L2_TUNER_ANALOG_TV, 365 .audmode = V4L2_TUNER_MODE_STEREO, 366 .std = port->encodernorm.id, 367 .frequency = f->frequency 368 }; 369 370 /* Stop the encoder */ 371 dprintk(DBGLVL_ENC, "%s() frequency=%d tuner=%d\n", __func__, 372 f->frequency, f->tuner); 373 374 if (f->tuner != 0) 375 return -EINVAL; 376 377 port->freq = clamp(f->frequency, 378 SAA7164_TV_MIN_FREQ, SAA7164_TV_MAX_FREQ); 379 380 /* Update the hardware */ 381 if (port->nr == SAA7164_PORT_ENC1) 382 tsport = &dev->ports[SAA7164_PORT_TS1]; 383 else if (port->nr == SAA7164_PORT_ENC2) 384 tsport = &dev->ports[SAA7164_PORT_TS2]; 385 else 386 BUG(); 387 388 fe = tsport->dvb.frontend; 389 390 if (fe && fe->ops.tuner_ops.set_analog_params) 391 fe->ops.tuner_ops.set_analog_params(fe, ¶ms); 392 else 393 printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__); 394 395 saa7164_encoder_initialize(port); 396 397 return 0; 398} 399 400static int vidioc_s_frequency(struct file *file, void *priv, 401 const struct v4l2_frequency *f) 402{ 403 struct saa7164_encoder_fh *fh = file->private_data; 404 405 return saa7164_s_frequency(fh->port, f); 406} 407 408static int saa7164_s_ctrl(struct v4l2_ctrl *ctrl) 409{ 410 struct saa7164_port *port = 411 container_of(ctrl->handler, struct saa7164_port, ctrl_handler); 412 struct saa7164_encoder_params *params = &port->encoder_params; 413 int ret = 0; 414 415 switch (ctrl->id) { 416 case V4L2_CID_BRIGHTNESS: 417 port->ctl_brightness = ctrl->val; 418 saa7164_api_set_usercontrol(port, PU_BRIGHTNESS_CONTROL); 419 break; 420 case V4L2_CID_CONTRAST: 421 port->ctl_contrast = ctrl->val; 422 saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL); 423 break; 424 case V4L2_CID_SATURATION: 425 port->ctl_saturation = ctrl->val; 426 saa7164_api_set_usercontrol(port, PU_SATURATION_CONTROL); 427 break; 428 case V4L2_CID_HUE: 429 port->ctl_hue = ctrl->val; 430 saa7164_api_set_usercontrol(port, PU_HUE_CONTROL); 431 break; 432 case V4L2_CID_SHARPNESS: 433 port->ctl_sharpness = ctrl->val; 434 saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL); 435 break; 436 case V4L2_CID_AUDIO_VOLUME: 437 port->ctl_volume = ctrl->val; 438 saa7164_api_set_audio_volume(port, port->ctl_volume); 439 break; 440 case V4L2_CID_MPEG_VIDEO_BITRATE: 441 params->bitrate = ctrl->val; 442 break; 443 case V4L2_CID_MPEG_STREAM_TYPE: 444 params->stream_type = ctrl->val; 445 break; 446 case V4L2_CID_MPEG_AUDIO_MUTE: 447 params->ctl_mute = ctrl->val; 448 ret = saa7164_api_audio_mute(port, params->ctl_mute); 449 if (ret != SAA_OK) { 450 printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, 451 ret); 452 ret = -EIO; 453 } 454 break; 455 case V4L2_CID_MPEG_VIDEO_ASPECT: 456 params->ctl_aspect = ctrl->val; 457 ret = saa7164_api_set_aspect_ratio(port); 458 if (ret != SAA_OK) { 459 printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__, 460 ret); 461 ret = -EIO; 462 } 463 break; 464 case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: 465 params->bitrate_mode = ctrl->val; 466 break; 467 case V4L2_CID_MPEG_VIDEO_B_FRAMES: 468 params->refdist = ctrl->val; 469 break; 470 case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: 471 params->bitrate_peak = ctrl->val; 472 break; 473 case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 474 params->gop_size = ctrl->val; 475 break; 476 default: 477 ret = -EINVAL; 478 } 479 480 return ret; 481} 482 483static int vidioc_querycap(struct file *file, void *priv, 484 struct v4l2_capability *cap) 485{ 486 struct saa7164_encoder_fh *fh = file->private_data; 487 struct saa7164_port *port = fh->port; 488 struct saa7164_dev *dev = port->dev; 489 490 strscpy(cap->driver, dev->name, sizeof(cap->driver)); 491 strscpy(cap->card, saa7164_boards[dev->board].name, 492 sizeof(cap->card)); 493 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci)); 494 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 495 V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE | 496 V4L2_CAP_DEVICE_CAPS; 497 return 0; 498} 499 500static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 501 struct v4l2_fmtdesc *f) 502{ 503 if (f->index != 0) 504 return -EINVAL; 505 506 f->pixelformat = V4L2_PIX_FMT_MPEG; 507 508 return 0; 509} 510 511static int vidioc_fmt_vid_cap(struct file *file, void *priv, 512 struct v4l2_format *f) 513{ 514 struct saa7164_encoder_fh *fh = file->private_data; 515 struct saa7164_port *port = fh->port; 516 517 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 518 f->fmt.pix.bytesperline = 0; 519 f->fmt.pix.sizeimage = SAA7164_SIZEIMAGE; 520 f->fmt.pix.field = V4L2_FIELD_INTERLACED; 521 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 522 f->fmt.pix.width = port->width; 523 f->fmt.pix.height = port->height; 524 return 0; 525} 526 527static int saa7164_encoder_stop_port(struct saa7164_port *port) 528{ 529 struct saa7164_dev *dev = port->dev; 530 int ret; 531 532 ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP); 533 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { 534 printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n", 535 __func__, ret); 536 ret = -EIO; 537 } else { 538 dprintk(DBGLVL_ENC, "%s() Stopped\n", __func__); 539 ret = 0; 540 } 541 542 return ret; 543} 544 545static int saa7164_encoder_acquire_port(struct saa7164_port *port) 546{ 547 struct saa7164_dev *dev = port->dev; 548 int ret; 549 550 ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE); 551 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { 552 printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n", 553 __func__, ret); 554 ret = -EIO; 555 } else { 556 dprintk(DBGLVL_ENC, "%s() Acquired\n", __func__); 557 ret = 0; 558 } 559 560 return ret; 561} 562 563static int saa7164_encoder_pause_port(struct saa7164_port *port) 564{ 565 struct saa7164_dev *dev = port->dev; 566 int ret; 567 568 ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE); 569 if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) { 570 printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n", 571 __func__, ret); 572 ret = -EIO; 573 } else { 574 dprintk(DBGLVL_ENC, "%s() Paused\n", __func__); 575 ret = 0; 576 } 577 578 return ret; 579} 580 581/* Firmware is very windows centric, meaning you have to transition 582 * the part through AVStream / KS Windows stages, forwards or backwards. 583 * States are: stopped, acquired (h/w), paused, started. 584 * We have to leave here will all of the soft buffers on the free list, 585 * else the cfg_post() func won't have soft buffers to correctly configure. 586 */ 587static int saa7164_encoder_stop_streaming(struct saa7164_port *port) 588{ 589 struct saa7164_dev *dev = port->dev; 590 struct saa7164_buffer *buf; 591 struct saa7164_user_buffer *ubuf; 592 struct list_head *c, *n; 593 int ret; 594 595 dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr); 596 597 ret = saa7164_encoder_pause_port(port); 598 ret = saa7164_encoder_acquire_port(port); 599 ret = saa7164_encoder_stop_port(port); 600 601 dprintk(DBGLVL_ENC, "%s(port=%d) Hardware stopped\n", __func__, 602 port->nr); 603 604 /* Reset the state of any allocated buffer resources */ 605 mutex_lock(&port->dmaqueue_lock); 606 607 /* Reset the hard and soft buffer state */ 608 list_for_each_safe(c, n, &port->dmaqueue.list) { 609 buf = list_entry(c, struct saa7164_buffer, list); 610 buf->flags = SAA7164_BUFFER_FREE; 611 buf->pos = 0; 612 } 613 614 list_for_each_safe(c, n, &port->list_buf_used.list) { 615 ubuf = list_entry(c, struct saa7164_user_buffer, list); 616 ubuf->pos = 0; 617 list_move_tail(&ubuf->list, &port->list_buf_free.list); 618 } 619 620 mutex_unlock(&port->dmaqueue_lock); 621 622 /* Free any allocated resources */ 623 saa7164_encoder_buffers_dealloc(port); 624 625 dprintk(DBGLVL_ENC, "%s(port=%d) Released\n", __func__, port->nr); 626 627 return ret; 628} 629 630static int saa7164_encoder_start_streaming(struct saa7164_port *port) 631{ 632 struct saa7164_dev *dev = port->dev; 633 int result, ret = 0; 634 635 dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr); 636 637 port->done_first_interrupt = 0; 638 639 /* allocate all of the PCIe DMA buffer resources on the fly, 640 * allowing switching between TS and PS payloads without 641 * requiring a complete driver reload. 642 */ 643 saa7164_encoder_buffers_alloc(port); 644 645 /* Configure the encoder with any cache values */ 646 saa7164_api_set_encoder(port); 647 saa7164_api_get_encoder(port); 648 649 /* Place the empty buffers on the hardware */ 650 saa7164_buffer_cfg_port(port); 651 652 /* Acquire the hardware */ 653 result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE); 654 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 655 printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n", 656 __func__, result); 657 658 /* Stop the hardware, regardless */ 659 result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP); 660 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 661 printk(KERN_ERR "%s() acquire/forced stop transition failed, res = 0x%x\n", 662 __func__, result); 663 } 664 ret = -EIO; 665 goto out; 666 } else 667 dprintk(DBGLVL_ENC, "%s() Acquired\n", __func__); 668 669 /* Pause the hardware */ 670 result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE); 671 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 672 printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n", 673 __func__, result); 674 675 /* Stop the hardware, regardless */ 676 result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP); 677 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 678 printk(KERN_ERR "%s() pause/forced stop transition failed, res = 0x%x\n", 679 __func__, result); 680 } 681 682 ret = -EIO; 683 goto out; 684 } else 685 dprintk(DBGLVL_ENC, "%s() Paused\n", __func__); 686 687 /* Start the hardware */ 688 result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN); 689 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 690 printk(KERN_ERR "%s() run transition failed, result = 0x%x\n", 691 __func__, result); 692 693 /* Stop the hardware, regardless */ 694 result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP); 695 if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) { 696 printk(KERN_ERR "%s() run/forced stop transition failed, res = 0x%x\n", 697 __func__, result); 698 } 699 700 ret = -EIO; 701 } else 702 dprintk(DBGLVL_ENC, "%s() Running\n", __func__); 703 704out: 705 return ret; 706} 707 708static int fops_open(struct file *file) 709{ 710 struct saa7164_dev *dev; 711 struct saa7164_port *port; 712 struct saa7164_encoder_fh *fh; 713 714 port = (struct saa7164_port *)video_get_drvdata(video_devdata(file)); 715 if (!port) 716 return -ENODEV; 717 718 dev = port->dev; 719 720 dprintk(DBGLVL_ENC, "%s()\n", __func__); 721 722 /* allocate + initialize per filehandle data */ 723 fh = kzalloc(sizeof(*fh), GFP_KERNEL); 724 if (NULL == fh) 725 return -ENOMEM; 726 727 fh->port = port; 728 v4l2_fh_init(&fh->fh, video_devdata(file)); 729 v4l2_fh_add(&fh->fh); 730 file->private_data = fh; 731 732 return 0; 733} 734 735static int fops_release(struct file *file) 736{ 737 struct saa7164_encoder_fh *fh = file->private_data; 738 struct saa7164_port *port = fh->port; 739 struct saa7164_dev *dev = port->dev; 740 741 dprintk(DBGLVL_ENC, "%s()\n", __func__); 742 743 /* Shut device down on last close */ 744 if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) { 745 if (atomic_dec_return(&port->v4l_reader_count) == 0) { 746 /* stop mpeg capture then cancel buffers */ 747 saa7164_encoder_stop_streaming(port); 748 } 749 } 750 751 v4l2_fh_del(&fh->fh); 752 v4l2_fh_exit(&fh->fh); 753 kfree(fh); 754 755 return 0; 756} 757 758static struct 759saa7164_user_buffer *saa7164_enc_next_buf(struct saa7164_port *port) 760{ 761 struct saa7164_user_buffer *ubuf = NULL; 762 struct saa7164_dev *dev = port->dev; 763 u32 crc; 764 765 mutex_lock(&port->dmaqueue_lock); 766 if (!list_empty(&port->list_buf_used.list)) { 767 ubuf = list_first_entry(&port->list_buf_used.list, 768 struct saa7164_user_buffer, list); 769 770 if (crc_checking) { 771 crc = crc32(0, ubuf->data, ubuf->actual_size); 772 if (crc != ubuf->crc) { 773 printk(KERN_ERR 774 "%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n", 775 __func__, 776 ubuf, ubuf->crc, crc); 777 } 778 } 779 780 } 781 mutex_unlock(&port->dmaqueue_lock); 782 783 dprintk(DBGLVL_ENC, "%s() returns %p\n", __func__, ubuf); 784 785 return ubuf; 786} 787 788static ssize_t fops_read(struct file *file, char __user *buffer, 789 size_t count, loff_t *pos) 790{ 791 struct saa7164_encoder_fh *fh = file->private_data; 792 struct saa7164_port *port = fh->port; 793 struct saa7164_user_buffer *ubuf = NULL; 794 struct saa7164_dev *dev = port->dev; 795 int ret = 0; 796 int rem, cnt; 797 u8 *p; 798 799 port->last_read_msecs_diff = port->last_read_msecs; 800 port->last_read_msecs = jiffies_to_msecs(jiffies); 801 port->last_read_msecs_diff = port->last_read_msecs - 802 port->last_read_msecs_diff; 803 804 saa7164_histogram_update(&port->read_interval, 805 port->last_read_msecs_diff); 806 807 if (*pos) { 808 printk(KERN_ERR "%s() ESPIPE\n", __func__); 809 return -ESPIPE; 810 } 811 812 if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) { 813 if (atomic_inc_return(&port->v4l_reader_count) == 1) { 814 815 if (saa7164_encoder_initialize(port) < 0) { 816 printk(KERN_ERR "%s() EINVAL\n", __func__); 817 return -EINVAL; 818 } 819 820 saa7164_encoder_start_streaming(port); 821 msleep(200); 822 } 823 } 824 825 /* blocking wait for buffer */ 826 if ((file->f_flags & O_NONBLOCK) == 0) { 827 if (wait_event_interruptible(port->wait_read, 828 saa7164_enc_next_buf(port))) { 829 printk(KERN_ERR "%s() ERESTARTSYS\n", __func__); 830 return -ERESTARTSYS; 831 } 832 } 833 834 /* Pull the first buffer from the used list */ 835 ubuf = saa7164_enc_next_buf(port); 836 837 while ((count > 0) && ubuf) { 838 839 /* set remaining bytes to copy */ 840 rem = ubuf->actual_size - ubuf->pos; 841 cnt = rem > count ? count : rem; 842 843 p = ubuf->data + ubuf->pos; 844 845 dprintk(DBGLVL_ENC, 846 "%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n", 847 __func__, (int)count, cnt, rem, ubuf, ubuf->pos); 848 849 if (copy_to_user(buffer, p, cnt)) { 850 printk(KERN_ERR "%s() copy_to_user failed\n", __func__); 851 if (!ret) { 852 printk(KERN_ERR "%s() EFAULT\n", __func__); 853 ret = -EFAULT; 854 } 855 goto err; 856 } 857 858 ubuf->pos += cnt; 859 count -= cnt; 860 buffer += cnt; 861 ret += cnt; 862 863 if (ubuf->pos > ubuf->actual_size) 864 printk(KERN_ERR "read() pos > actual, huh?\n"); 865 866 if (ubuf->pos == ubuf->actual_size) { 867 868 /* finished with current buffer, take next buffer */ 869 870 /* Requeue the buffer on the free list */ 871 ubuf->pos = 0; 872 873 mutex_lock(&port->dmaqueue_lock); 874 list_move_tail(&ubuf->list, &port->list_buf_free.list); 875 mutex_unlock(&port->dmaqueue_lock); 876 877 /* Dequeue next */ 878 if ((file->f_flags & O_NONBLOCK) == 0) { 879 if (wait_event_interruptible(port->wait_read, 880 saa7164_enc_next_buf(port))) { 881 break; 882 } 883 } 884 ubuf = saa7164_enc_next_buf(port); 885 } 886 } 887err: 888 if (!ret && !ubuf) 889 ret = -EAGAIN; 890 891 return ret; 892} 893 894static __poll_t fops_poll(struct file *file, poll_table *wait) 895{ 896 __poll_t req_events = poll_requested_events(wait); 897 struct saa7164_encoder_fh *fh = 898 (struct saa7164_encoder_fh *)file->private_data; 899 struct saa7164_port *port = fh->port; 900 __poll_t mask = v4l2_ctrl_poll(file, wait); 901 902 port->last_poll_msecs_diff = port->last_poll_msecs; 903 port->last_poll_msecs = jiffies_to_msecs(jiffies); 904 port->last_poll_msecs_diff = port->last_poll_msecs - 905 port->last_poll_msecs_diff; 906 907 saa7164_histogram_update(&port->poll_interval, 908 port->last_poll_msecs_diff); 909 910 if (!(req_events & (EPOLLIN | EPOLLRDNORM))) 911 return mask; 912 913 if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) { 914 if (atomic_inc_return(&port->v4l_reader_count) == 1) { 915 if (saa7164_encoder_initialize(port) < 0) 916 return mask | EPOLLERR; 917 saa7164_encoder_start_streaming(port); 918 msleep(200); 919 } 920 } 921 922 /* Pull the first buffer from the used list */ 923 if (!list_empty(&port->list_buf_used.list)) 924 mask |= EPOLLIN | EPOLLRDNORM; 925 926 return mask; 927} 928 929static const struct v4l2_ctrl_ops saa7164_ctrl_ops = { 930 .s_ctrl = saa7164_s_ctrl, 931}; 932 933static const struct v4l2_file_operations mpeg_fops = { 934 .owner = THIS_MODULE, 935 .open = fops_open, 936 .release = fops_release, 937 .read = fops_read, 938 .poll = fops_poll, 939 .unlocked_ioctl = video_ioctl2, 940}; 941 942static const struct v4l2_ioctl_ops mpeg_ioctl_ops = { 943 .vidioc_s_std = vidioc_s_std, 944 .vidioc_g_std = vidioc_g_std, 945 .vidioc_enum_input = saa7164_enum_input, 946 .vidioc_g_input = vidioc_g_input, 947 .vidioc_s_input = vidioc_s_input, 948 .vidioc_g_tuner = saa7164_g_tuner, 949 .vidioc_s_tuner = saa7164_s_tuner, 950 .vidioc_g_frequency = vidioc_g_frequency, 951 .vidioc_s_frequency = vidioc_s_frequency, 952 .vidioc_querycap = vidioc_querycap, 953 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 954 .vidioc_g_fmt_vid_cap = vidioc_fmt_vid_cap, 955 .vidioc_try_fmt_vid_cap = vidioc_fmt_vid_cap, 956 .vidioc_s_fmt_vid_cap = vidioc_fmt_vid_cap, 957 .vidioc_log_status = v4l2_ctrl_log_status, 958 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 959 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 960}; 961 962static struct video_device saa7164_mpeg_template = { 963 .name = "saa7164", 964 .fops = &mpeg_fops, 965 .ioctl_ops = &mpeg_ioctl_ops, 966 .minor = -1, 967 .tvnorms = SAA7164_NORMS, 968 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | 969 V4L2_CAP_TUNER, 970}; 971 972static struct video_device *saa7164_encoder_alloc( 973 struct saa7164_port *port, 974 struct pci_dev *pci, 975 struct video_device *template, 976 char *type) 977{ 978 struct video_device *vfd; 979 struct saa7164_dev *dev = port->dev; 980 981 dprintk(DBGLVL_ENC, "%s()\n", __func__); 982 983 vfd = video_device_alloc(); 984 if (NULL == vfd) 985 return NULL; 986 987 *vfd = *template; 988 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, 989 type, saa7164_boards[dev->board].name); 990 991 vfd->v4l2_dev = &dev->v4l2_dev; 992 vfd->release = video_device_release; 993 return vfd; 994} 995 996int saa7164_encoder_register(struct saa7164_port *port) 997{ 998 struct saa7164_dev *dev = port->dev; 999 struct v4l2_ctrl_handler *hdl = &port->ctrl_handler; 1000 int result = -ENODEV; 1001 1002 dprintk(DBGLVL_ENC, "%s()\n", __func__); 1003 1004 BUG_ON(port->type != SAA7164_MPEG_ENCODER); 1005 1006 /* Sanity check that the PCI configuration space is active */ 1007 if (port->hwcfg.BARLocation == 0) { 1008 printk(KERN_ERR "%s() failed (errno = %d), NO PCI configuration\n", 1009 __func__, result); 1010 result = -ENOMEM; 1011 goto fail_pci; 1012 } 1013 1014 /* Establish encoder defaults here */ 1015 /* Set default TV standard */ 1016 port->encodernorm = saa7164_tvnorms[0]; 1017 port->width = 720; 1018 port->mux_input = 1; /* Composite */ 1019 port->video_format = EU_VIDEO_FORMAT_MPEG_2; 1020 port->audio_format = 0; 1021 port->video_resolution = 0; 1022 port->freq = SAA7164_TV_MIN_FREQ; 1023 1024 v4l2_ctrl_handler_init(hdl, 14); 1025 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1026 V4L2_CID_BRIGHTNESS, 0, 255, 1, 127); 1027 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1028 V4L2_CID_CONTRAST, 0, 255, 1, 66); 1029 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1030 V4L2_CID_SATURATION, 0, 255, 1, 62); 1031 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1032 V4L2_CID_HUE, 0, 255, 1, 128); 1033 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1034 V4L2_CID_SHARPNESS, 0x0, 0x0f, 1, 8); 1035 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1036 V4L2_CID_MPEG_AUDIO_MUTE, 0x0, 0x01, 1, 0); 1037 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1038 V4L2_CID_AUDIO_VOLUME, -83, 24, 1, 20); 1039 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1040 V4L2_CID_MPEG_VIDEO_BITRATE, 1041 ENCODER_MIN_BITRATE, ENCODER_MAX_BITRATE, 1042 100000, ENCODER_DEF_BITRATE); 1043 v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops, 1044 V4L2_CID_MPEG_STREAM_TYPE, 1045 V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 0, 1046 V4L2_MPEG_STREAM_TYPE_MPEG2_PS); 1047 v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops, 1048 V4L2_CID_MPEG_VIDEO_ASPECT, 1049 V4L2_MPEG_VIDEO_ASPECT_221x100, 0, 1050 V4L2_MPEG_VIDEO_ASPECT_4x3); 1051 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1052 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, 15); 1053 v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops, 1054 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 1055 V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0, 1056 V4L2_MPEG_VIDEO_BITRATE_MODE_VBR); 1057 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1058 V4L2_CID_MPEG_VIDEO_B_FRAMES, 1, 3, 1, 1); 1059 v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops, 1060 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 1061 ENCODER_MIN_BITRATE, ENCODER_MAX_BITRATE, 1062 100000, ENCODER_DEF_BITRATE); 1063 if (hdl->error) { 1064 result = hdl->error; 1065 goto fail_hdl; 1066 } 1067 1068 port->std = V4L2_STD_NTSC_M; 1069 1070 if (port->encodernorm.id & V4L2_STD_525_60) 1071 port->height = 480; 1072 else 1073 port->height = 576; 1074 1075 /* Allocate and register the video device node */ 1076 port->v4l_device = saa7164_encoder_alloc(port, 1077 dev->pci, &saa7164_mpeg_template, "mpeg"); 1078 1079 if (!port->v4l_device) { 1080 printk(KERN_INFO "%s: can't allocate mpeg device\n", 1081 dev->name); 1082 result = -ENOMEM; 1083 goto fail_hdl; 1084 } 1085 1086 port->v4l_device->ctrl_handler = hdl; 1087 v4l2_ctrl_handler_setup(hdl); 1088 video_set_drvdata(port->v4l_device, port); 1089 result = video_register_device(port->v4l_device, 1090 VFL_TYPE_VIDEO, -1); 1091 if (result < 0) { 1092 printk(KERN_INFO "%s: can't register mpeg device\n", 1093 dev->name); 1094 goto fail_reg; 1095 } 1096 1097 printk(KERN_INFO "%s: registered device video%d [mpeg]\n", 1098 dev->name, port->v4l_device->num); 1099 1100 /* Configure the hardware defaults */ 1101 saa7164_api_set_videomux(port); 1102 saa7164_api_set_usercontrol(port, PU_BRIGHTNESS_CONTROL); 1103 saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL); 1104 saa7164_api_set_usercontrol(port, PU_HUE_CONTROL); 1105 saa7164_api_set_usercontrol(port, PU_SATURATION_CONTROL); 1106 saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL); 1107 saa7164_api_audio_mute(port, 0); 1108 saa7164_api_set_audio_volume(port, 20); 1109 saa7164_api_set_aspect_ratio(port); 1110 1111 /* Disable audio standard detection, it's buggy */ 1112 saa7164_api_set_audio_detection(port, 0); 1113 1114 saa7164_api_set_encoder(port); 1115 saa7164_api_get_encoder(port); 1116 return 0; 1117 1118fail_reg: 1119 video_device_release(port->v4l_device); 1120 port->v4l_device = NULL; 1121fail_hdl: 1122 v4l2_ctrl_handler_free(hdl); 1123fail_pci: 1124 return result; 1125} 1126 1127void saa7164_encoder_unregister(struct saa7164_port *port) 1128{ 1129 struct saa7164_dev *dev = port->dev; 1130 1131 dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr); 1132 1133 BUG_ON(port->type != SAA7164_MPEG_ENCODER); 1134 1135 if (port->v4l_device) { 1136 if (port->v4l_device->minor != -1) 1137 video_unregister_device(port->v4l_device); 1138 else 1139 video_device_release(port->v4l_device); 1140 1141 port->v4l_device = NULL; 1142 } 1143 v4l2_ctrl_handler_free(&port->ctrl_handler); 1144 1145 dprintk(DBGLVL_ENC, "%s(port=%d) done\n", __func__, port->nr); 1146} 1147 1148