1 /* 2 * 3 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 18 */ 19 20 #include <linux/init.h> 21 #include <linux/list.h> 22 #include <linux/module.h> 23 #include <linux/kernel.h> 24 #include <linux/delay.h> 25 26 #include "saa7134-reg.h" 27 #include "saa7134.h" 28 29 #include <media/saa6752hs.h> 30 #include <media/v4l2-common.h> 31 #include <media/v4l2-chip-ident.h> 32 33 /* ------------------------------------------------------------------ */ 34 35 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); 36 MODULE_LICENSE("GPL"); 37 38 static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET }; 39 40 module_param_array(empress_nr, int, NULL, 0444); 41 MODULE_PARM_DESC(empress_nr,"ts device number"); 42 43 static unsigned int debug; 44 module_param(debug, int, 0644); 45 MODULE_PARM_DESC(debug,"enable debug messages"); 46 47 #define dprintk(fmt, arg...) if (debug) \ 48 printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg) 49 50 /* ------------------------------------------------------------------ */ 51 52 static void ts_reset_encoder(struct saa7134_dev* dev) 53 { 54 if (!dev->empress_started) 55 return; 56 57 saa_writeb(SAA7134_SPECIAL_MODE, 0x00); 58 msleep(10); 59 saa_writeb(SAA7134_SPECIAL_MODE, 0x01); 60 msleep(100); 61 dev->empress_started = 0; 62 } 63 64 static int ts_init_encoder(struct saa7134_dev* dev) 65 { 66 u32 leading_null_bytes = 0; 67 68 /* If more cards start to need this, then this 69 should probably be added to the card definitions. */ 70 switch (dev->board) { 71 case SAA7134_BOARD_BEHOLD_M6: 72 case SAA7134_BOARD_BEHOLD_M63: 73 case SAA7134_BOARD_BEHOLD_M6_EXTRA: 74 leading_null_bytes = 1; 75 break; 76 } 77 ts_reset_encoder(dev); 78 saa_call_all(dev, core, init, leading_null_bytes); 79 dev->empress_started = 1; 80 return 0; 81 } 82 83 /* ------------------------------------------------------------------ */ 84 85 static int ts_open(struct file *file) 86 { 87 struct video_device *vdev = video_devdata(file); 88 struct saa7134_dev *dev = video_drvdata(file); 89 int err; 90 91 dprintk("open dev=%s\n", video_device_node_name(vdev)); 92 err = -EBUSY; 93 if (!mutex_trylock(&dev->empress_tsq.vb_lock)) 94 return err; 95 if (atomic_read(&dev->empress_users)) 96 goto done; 97 98 /* Unmute audio */ 99 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, 100 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6)); 101 102 atomic_inc(&dev->empress_users); 103 file->private_data = dev; 104 err = 0; 105 106 done: 107 mutex_unlock(&dev->empress_tsq.vb_lock); 108 return err; 109 } 110 111 static int ts_release(struct file *file) 112 { 113 struct saa7134_dev *dev = file->private_data; 114 115 videobuf_stop(&dev->empress_tsq); 116 videobuf_mmap_free(&dev->empress_tsq); 117 118 /* stop the encoder */ 119 ts_reset_encoder(dev); 120 121 /* Mute audio */ 122 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, 123 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6)); 124 125 atomic_dec(&dev->empress_users); 126 127 return 0; 128 } 129 130 static ssize_t 131 ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos) 132 { 133 struct saa7134_dev *dev = file->private_data; 134 135 if (!dev->empress_started) 136 ts_init_encoder(dev); 137 138 return videobuf_read_stream(&dev->empress_tsq, 139 data, count, ppos, 0, 140 file->f_flags & O_NONBLOCK); 141 } 142 143 static unsigned int 144 ts_poll(struct file *file, struct poll_table_struct *wait) 145 { 146 struct saa7134_dev *dev = file->private_data; 147 148 return videobuf_poll_stream(file, &dev->empress_tsq, wait); 149 } 150 151 152 static int 153 ts_mmap(struct file *file, struct vm_area_struct * vma) 154 { 155 struct saa7134_dev *dev = file->private_data; 156 157 return videobuf_mmap_mapper(&dev->empress_tsq, vma); 158 } 159 160 /* 161 * This function is _not_ called directly, but from 162 * video_generic_ioctl (and maybe others). userspace 163 * copying is done already, arg is a kernel pointer. 164 */ 165 166 static int empress_querycap(struct file *file, void *priv, 167 struct v4l2_capability *cap) 168 { 169 struct saa7134_dev *dev = file->private_data; 170 171 strcpy(cap->driver, "saa7134"); 172 strlcpy(cap->card, saa7134_boards[dev->board].name, 173 sizeof(cap->card)); 174 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci)); 175 cap->capabilities = 176 V4L2_CAP_VIDEO_CAPTURE | 177 V4L2_CAP_READWRITE | 178 V4L2_CAP_STREAMING; 179 return 0; 180 } 181 182 static int empress_enum_input(struct file *file, void *priv, 183 struct v4l2_input *i) 184 { 185 if (i->index != 0) 186 return -EINVAL; 187 188 i->type = V4L2_INPUT_TYPE_CAMERA; 189 strcpy(i->name, "CCIR656"); 190 191 return 0; 192 } 193 194 static int empress_g_input(struct file *file, void *priv, unsigned int *i) 195 { 196 *i = 0; 197 return 0; 198 } 199 200 static int empress_s_input(struct file *file, void *priv, unsigned int i) 201 { 202 if (i != 0) 203 return -EINVAL; 204 205 return 0; 206 } 207 208 static int empress_enum_fmt_vid_cap(struct file *file, void *priv, 209 struct v4l2_fmtdesc *f) 210 { 211 if (f->index != 0) 212 return -EINVAL; 213 214 strlcpy(f->description, "MPEG TS", sizeof(f->description)); 215 f->pixelformat = V4L2_PIX_FMT_MPEG; 216 217 return 0; 218 } 219 220 static int empress_g_fmt_vid_cap(struct file *file, void *priv, 221 struct v4l2_format *f) 222 { 223 struct saa7134_dev *dev = file->private_data; 224 struct v4l2_mbus_framefmt mbus_fmt; 225 226 saa_call_all(dev, video, g_mbus_fmt, &mbus_fmt); 227 228 v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt); 229 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 230 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; 231 232 return 0; 233 } 234 235 static int empress_s_fmt_vid_cap(struct file *file, void *priv, 236 struct v4l2_format *f) 237 { 238 struct saa7134_dev *dev = file->private_data; 239 struct v4l2_mbus_framefmt mbus_fmt; 240 241 v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED); 242 saa_call_all(dev, video, s_mbus_fmt, &mbus_fmt); 243 v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt); 244 245 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 246 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; 247 248 return 0; 249 } 250 251 static int empress_try_fmt_vid_cap(struct file *file, void *priv, 252 struct v4l2_format *f) 253 { 254 struct saa7134_dev *dev = file->private_data; 255 256 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; 257 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; 258 259 return 0; 260 } 261 262 static int empress_reqbufs(struct file *file, void *priv, 263 struct v4l2_requestbuffers *p) 264 { 265 struct saa7134_dev *dev = file->private_data; 266 267 return videobuf_reqbufs(&dev->empress_tsq, p); 268 } 269 270 static int empress_querybuf(struct file *file, void *priv, 271 struct v4l2_buffer *b) 272 { 273 struct saa7134_dev *dev = file->private_data; 274 275 return videobuf_querybuf(&dev->empress_tsq, b); 276 } 277 278 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) 279 { 280 struct saa7134_dev *dev = file->private_data; 281 282 return videobuf_qbuf(&dev->empress_tsq, b); 283 } 284 285 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) 286 { 287 struct saa7134_dev *dev = file->private_data; 288 289 return videobuf_dqbuf(&dev->empress_tsq, b, 290 file->f_flags & O_NONBLOCK); 291 } 292 293 static int empress_streamon(struct file *file, void *priv, 294 enum v4l2_buf_type type) 295 { 296 struct saa7134_dev *dev = file->private_data; 297 298 return videobuf_streamon(&dev->empress_tsq); 299 } 300 301 static int empress_streamoff(struct file *file, void *priv, 302 enum v4l2_buf_type type) 303 { 304 struct saa7134_dev *dev = file->private_data; 305 306 return videobuf_streamoff(&dev->empress_tsq); 307 } 308 309 static int empress_s_ext_ctrls(struct file *file, void *priv, 310 struct v4l2_ext_controls *ctrls) 311 { 312 struct saa7134_dev *dev = file->private_data; 313 int err; 314 315 /* count == 0 is abused in saa6752hs.c, so that special 316 case is handled here explicitly. */ 317 if (ctrls->count == 0) 318 return 0; 319 320 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) 321 return -EINVAL; 322 323 err = saa_call_empress(dev, core, s_ext_ctrls, ctrls); 324 ts_init_encoder(dev); 325 326 return err; 327 } 328 329 static int empress_g_ext_ctrls(struct file *file, void *priv, 330 struct v4l2_ext_controls *ctrls) 331 { 332 struct saa7134_dev *dev = file->private_data; 333 334 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) 335 return -EINVAL; 336 return saa_call_empress(dev, core, g_ext_ctrls, ctrls); 337 } 338 339 static int empress_g_ctrl(struct file *file, void *priv, 340 struct v4l2_control *c) 341 { 342 struct saa7134_dev *dev = file->private_data; 343 344 return saa7134_g_ctrl_internal(dev, NULL, c); 345 } 346 347 static int empress_s_ctrl(struct file *file, void *priv, 348 struct v4l2_control *c) 349 { 350 struct saa7134_dev *dev = file->private_data; 351 352 return saa7134_s_ctrl_internal(dev, NULL, c); 353 } 354 355 static int empress_queryctrl(struct file *file, void *priv, 356 struct v4l2_queryctrl *c) 357 { 358 /* Must be sorted from low to high control ID! */ 359 static const u32 user_ctrls[] = { 360 V4L2_CID_USER_CLASS, 361 V4L2_CID_BRIGHTNESS, 362 V4L2_CID_CONTRAST, 363 V4L2_CID_SATURATION, 364 V4L2_CID_HUE, 365 V4L2_CID_AUDIO_VOLUME, 366 V4L2_CID_AUDIO_MUTE, 367 V4L2_CID_HFLIP, 368 0 369 }; 370 371 /* Must be sorted from low to high control ID! */ 372 static const u32 mpeg_ctrls[] = { 373 V4L2_CID_MPEG_CLASS, 374 V4L2_CID_MPEG_STREAM_TYPE, 375 V4L2_CID_MPEG_STREAM_PID_PMT, 376 V4L2_CID_MPEG_STREAM_PID_AUDIO, 377 V4L2_CID_MPEG_STREAM_PID_VIDEO, 378 V4L2_CID_MPEG_STREAM_PID_PCR, 379 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ, 380 V4L2_CID_MPEG_AUDIO_ENCODING, 381 V4L2_CID_MPEG_AUDIO_L2_BITRATE, 382 V4L2_CID_MPEG_VIDEO_ENCODING, 383 V4L2_CID_MPEG_VIDEO_ASPECT, 384 V4L2_CID_MPEG_VIDEO_BITRATE_MODE, 385 V4L2_CID_MPEG_VIDEO_BITRATE, 386 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK, 387 0 388 }; 389 static const u32 *ctrl_classes[] = { 390 user_ctrls, 391 mpeg_ctrls, 392 NULL 393 }; 394 struct saa7134_dev *dev = file->private_data; 395 396 c->id = v4l2_ctrl_next(ctrl_classes, c->id); 397 if (c->id == 0) 398 return -EINVAL; 399 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS) 400 return v4l2_ctrl_query_fill(c, 0, 0, 0, 0); 401 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG) 402 return saa7134_queryctrl(file, priv, c); 403 return saa_call_empress(dev, core, queryctrl, c); 404 } 405 406 static int empress_querymenu(struct file *file, void *priv, 407 struct v4l2_querymenu *c) 408 { 409 struct saa7134_dev *dev = file->private_data; 410 411 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG) 412 return -EINVAL; 413 return saa_call_empress(dev, core, querymenu, c); 414 } 415 416 static int empress_g_chip_ident(struct file *file, void *fh, 417 struct v4l2_dbg_chip_ident *chip) 418 { 419 struct saa7134_dev *dev = file->private_data; 420 421 chip->ident = V4L2_IDENT_NONE; 422 chip->revision = 0; 423 if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER && 424 !strcmp(chip->match.name, "saa6752hs")) 425 return saa_call_empress(dev, core, g_chip_ident, chip); 426 if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR) 427 return saa_call_empress(dev, core, g_chip_ident, chip); 428 return -EINVAL; 429 } 430 431 static int empress_s_std(struct file *file, void *priv, v4l2_std_id *id) 432 { 433 struct saa7134_dev *dev = file->private_data; 434 435 return saa7134_s_std_internal(dev, NULL, id); 436 } 437 438 static int empress_g_std(struct file *file, void *priv, v4l2_std_id *id) 439 { 440 struct saa7134_dev *dev = file->private_data; 441 442 *id = dev->tvnorm->id; 443 return 0; 444 } 445 446 static const struct v4l2_file_operations ts_fops = 447 { 448 .owner = THIS_MODULE, 449 .open = ts_open, 450 .release = ts_release, 451 .read = ts_read, 452 .poll = ts_poll, 453 .mmap = ts_mmap, 454 .ioctl = video_ioctl2, 455 }; 456 457 static const struct v4l2_ioctl_ops ts_ioctl_ops = { 458 .vidioc_querycap = empress_querycap, 459 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap, 460 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap, 461 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap, 462 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap, 463 .vidioc_reqbufs = empress_reqbufs, 464 .vidioc_querybuf = empress_querybuf, 465 .vidioc_qbuf = empress_qbuf, 466 .vidioc_dqbuf = empress_dqbuf, 467 .vidioc_streamon = empress_streamon, 468 .vidioc_streamoff = empress_streamoff, 469 .vidioc_s_ext_ctrls = empress_s_ext_ctrls, 470 .vidioc_g_ext_ctrls = empress_g_ext_ctrls, 471 .vidioc_enum_input = empress_enum_input, 472 .vidioc_g_input = empress_g_input, 473 .vidioc_s_input = empress_s_input, 474 .vidioc_queryctrl = empress_queryctrl, 475 .vidioc_querymenu = empress_querymenu, 476 .vidioc_g_ctrl = empress_g_ctrl, 477 .vidioc_s_ctrl = empress_s_ctrl, 478 .vidioc_g_chip_ident = empress_g_chip_ident, 479 .vidioc_s_std = empress_s_std, 480 .vidioc_g_std = empress_g_std, 481 }; 482 483 /* ----------------------------------------------------------- */ 484 485 static struct video_device saa7134_empress_template = { 486 .name = "saa7134-empress", 487 .fops = &ts_fops, 488 .ioctl_ops = &ts_ioctl_ops, 489 490 .tvnorms = SAA7134_NORMS, 491 .current_norm = V4L2_STD_PAL, 492 }; 493 494 static void empress_signal_update(struct work_struct *work) 495 { 496 struct saa7134_dev* dev = 497 container_of(work, struct saa7134_dev, empress_workqueue); 498 499 if (dev->nosignal) { 500 dprintk("no video signal\n"); 501 } else { 502 dprintk("video signal acquired\n"); 503 } 504 } 505 506 static void empress_signal_change(struct saa7134_dev *dev) 507 { 508 schedule_work(&dev->empress_workqueue); 509 } 510 511 512 static int empress_init(struct saa7134_dev *dev) 513 { 514 int err; 515 516 dprintk("%s: %s\n",dev->name,__func__); 517 dev->empress_dev = video_device_alloc(); 518 if (NULL == dev->empress_dev) 519 return -ENOMEM; 520 *(dev->empress_dev) = saa7134_empress_template; 521 dev->empress_dev->parent = &dev->pci->dev; 522 dev->empress_dev->release = video_device_release; 523 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name), 524 "%s empress (%s)", dev->name, 525 saa7134_boards[dev->board].name); 526 527 INIT_WORK(&dev->empress_workqueue, empress_signal_update); 528 529 video_set_drvdata(dev->empress_dev, dev); 530 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, 531 empress_nr[dev->nr]); 532 if (err < 0) { 533 printk(KERN_INFO "%s: can't register video device\n", 534 dev->name); 535 video_device_release(dev->empress_dev); 536 dev->empress_dev = NULL; 537 return err; 538 } 539 printk(KERN_INFO "%s: registered device %s [mpeg]\n", 540 dev->name, video_device_node_name(dev->empress_dev)); 541 542 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops, 543 &dev->pci->dev, &dev->slock, 544 V4L2_BUF_TYPE_VIDEO_CAPTURE, 545 V4L2_FIELD_ALTERNATE, 546 sizeof(struct saa7134_buf), 547 dev, NULL); 548 549 empress_signal_update(&dev->empress_workqueue); 550 return 0; 551 } 552 553 static int empress_fini(struct saa7134_dev *dev) 554 { 555 dprintk("%s: %s\n",dev->name,__func__); 556 557 if (NULL == dev->empress_dev) 558 return 0; 559 flush_work(&dev->empress_workqueue); 560 video_unregister_device(dev->empress_dev); 561 dev->empress_dev = NULL; 562 return 0; 563 } 564 565 static struct saa7134_mpeg_ops empress_ops = { 566 .type = SAA7134_MPEG_EMPRESS, 567 .init = empress_init, 568 .fini = empress_fini, 569 .signal_change = empress_signal_change, 570 }; 571 572 static int __init empress_register(void) 573 { 574 return saa7134_ts_register(&empress_ops); 575 } 576 577 static void __exit empress_unregister(void) 578 { 579 saa7134_ts_unregister(&empress_ops); 580 } 581 582 module_init(empress_register); 583 module_exit(empress_unregister); 584 585 /* ----------------------------------------------------------- */ 586 /* 587 * Local variables: 588 * c-basic-offset: 8 589 * End: 590 */ 591