usbvision-video.c revision ed4d6375a1498009a9e68d93661207351d36874f
1/* 2 * USB USBVISION Video device driver 0.9.9 3 * 4 * 5 * 6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> 7 * 8 * This module is part of usbvision driver project. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 * 24 * Let's call the version 0.... until compression decoding is completely 25 * implemented. 26 * 27 * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach. 28 * It was based on USB CPiA driver written by Peter Pregler, 29 * Scott J. Bertin and Johannes Erdfelt 30 * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler & 31 * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink 32 * Updates to driver completed by Dwaine P. Garden 33 * 34 * 35 * TODO: 36 * - use submit_urb for all setup packets 37 * - Fix memory settings for nt1004. It is 4 times as big as the 38 * nt1003 memory. 39 * - Add audio on endpoint 3 for nt1004 chip. 40 * Seems impossible, needs a codec interface. Which one? 41 * - Clean up the driver. 42 * - optimization for performance. 43 * - Add Videotext capability (VBI). Working on it..... 44 * - Check audio for other devices 45 * 46 */ 47 48#include <linux/version.h> 49#include <linux/kernel.h> 50#include <linux/list.h> 51#include <linux/timer.h> 52#include <linux/slab.h> 53#include <linux/mm.h> 54#include <linux/utsname.h> 55#include <linux/highmem.h> 56#include <linux/videodev.h> 57#include <linux/vmalloc.h> 58#include <linux/module.h> 59#include <linux/init.h> 60#include <linux/spinlock.h> 61#include <asm/io.h> 62#include <linux/videodev2.h> 63#include <linux/video_decoder.h> 64#include <linux/i2c.h> 65 66#include <media/saa7115.h> 67#include <media/v4l2-common.h> 68#include <media/tuner.h> 69#include <media/audiochip.h> 70 71#include <linux/moduleparam.h> 72#include <linux/workqueue.h> 73 74#ifdef CONFIG_KMOD 75#include <linux/kmod.h> 76#endif 77 78#include "usbvision.h" 79#include "usbvision-cards.h" 80 81#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\ 82 Dwaine Garden <DwaineGarden@rogers.com>" 83#define DRIVER_NAME "usbvision" 84#define DRIVER_ALIAS "USBVision" 85#define DRIVER_DESC "USBVision USB Video Device Driver for Linux" 86#define DRIVER_LICENSE "GPL" 87#define USBVISION_DRIVER_VERSION_MAJOR 0 88#define USBVISION_DRIVER_VERSION_MINOR 9 89#define USBVISION_DRIVER_VERSION_PATCHLEVEL 9 90#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\ 91USBVISION_DRIVER_VERSION_MINOR,\ 92USBVISION_DRIVER_VERSION_PATCHLEVEL) 93#define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\ 94 "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\ 95 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) 96 97#define ENABLE_HEXDUMP 0 /* Enable if you need it */ 98 99 100#ifdef USBVISION_DEBUG 101 #define PDEBUG(level, fmt, args...) \ 102 if (video_debug & (level)) \ 103 info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\ 104 ## args) 105#else 106 #define PDEBUG(level, fmt, args...) do {} while(0) 107#endif 108 109#define DBG_IO 1<<1 110#define DBG_PROBE 1<<2 111#define DBG_MMAP 1<<3 112 113//String operations 114#define rmspace(str) while(*str==' ') str++; 115#define goto2next(str) while(*str!=' ') str++; while(*str==' ') str++; 116 117 118/* sequential number of usbvision device */ 119static int usbvision_nr = 0; 120 121static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = { 122 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" }, 123 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" }, 124 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" }, 125 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" }, 126 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" }, 127 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" }, 128 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, // 1.5 ! 129 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" } 130}; 131 132/* Function prototypes */ 133static void usbvision_release(struct usb_usbvision *usbvision); 134 135/* Default initalization of device driver parameters */ 136/* Set the default format for ISOC endpoint */ 137static int isocMode = ISOC_MODE_COMPRESS; 138/* Set the default Debug Mode of the device driver */ 139static int video_debug = 0; 140/* Set the default device to power on at startup */ 141static int PowerOnAtOpen = 1; 142/* Sequential Number of Video Device */ 143static int video_nr = -1; 144/* Sequential Number of Radio Device */ 145static int radio_nr = -1; 146/* Sequential Number of VBI Device */ 147static int vbi_nr = -1; 148 149/* Grab parameters for the device driver */ 150 151/* Showing parameters under SYSFS */ 152module_param(isocMode, int, 0444); 153module_param(video_debug, int, 0444); 154module_param(PowerOnAtOpen, int, 0444); 155module_param(video_nr, int, 0444); 156module_param(radio_nr, int, 0444); 157module_param(vbi_nr, int, 0444); 158 159MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)"); 160MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)"); 161MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened. Default: 1 (On)"); 162MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)"); 163MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); 164MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX). Default: -1 (autodetect)"); 165 166 167// Misc stuff 168MODULE_AUTHOR(DRIVER_AUTHOR); 169MODULE_DESCRIPTION(DRIVER_DESC); 170MODULE_LICENSE(DRIVER_LICENSE); 171MODULE_VERSION(USBVISION_VERSION_STRING); 172MODULE_ALIAS(DRIVER_ALIAS); 173 174 175/*****************************************************************************/ 176/* SYSFS Code - Copied from the stv680.c usb module. */ 177/* Device information is located at /sys/class/video4linux/video0 */ 178/* Device parameters information is located at /sys/module/usbvision */ 179/* Device USB Information is located at */ 180/* /sys/bus/usb/drivers/USBVision Video Grabber */ 181/*****************************************************************************/ 182 183 184#define YES_NO(x) ((x) ? "Yes" : "No") 185 186static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd) 187{ 188 struct video_device *vdev = 189 container_of(cd, struct video_device, class_dev); 190 return video_get_drvdata(vdev); 191} 192 193static ssize_t show_version(struct class_device *cd, char *buf) 194{ 195 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING); 196} 197static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL); 198 199static ssize_t show_model(struct class_device *cd, char *buf) 200{ 201 struct video_device *vdev = 202 container_of(cd, struct video_device, class_dev); 203 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 204 return sprintf(buf, "%s\n", 205 usbvision_device_data[usbvision->DevModel].ModelString); 206} 207static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL); 208 209static ssize_t show_hue(struct class_device *cd, char *buf) 210{ 211 struct video_device *vdev = 212 container_of(cd, struct video_device, class_dev); 213 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 214 struct v4l2_control ctrl; 215 ctrl.id = V4L2_CID_HUE; 216 ctrl.value = 0; 217 if(usbvision->user) 218 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); 219 return sprintf(buf, "%d\n", ctrl.value); 220} 221static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); 222 223static ssize_t show_contrast(struct class_device *cd, char *buf) 224{ 225 struct video_device *vdev = 226 container_of(cd, struct video_device, class_dev); 227 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 228 struct v4l2_control ctrl; 229 ctrl.id = V4L2_CID_CONTRAST; 230 ctrl.value = 0; 231 if(usbvision->user) 232 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); 233 return sprintf(buf, "%d\n", ctrl.value); 234} 235static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); 236 237static ssize_t show_brightness(struct class_device *cd, char *buf) 238{ 239 struct video_device *vdev = 240 container_of(cd, struct video_device, class_dev); 241 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 242 struct v4l2_control ctrl; 243 ctrl.id = V4L2_CID_BRIGHTNESS; 244 ctrl.value = 0; 245 if(usbvision->user) 246 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); 247 return sprintf(buf, "%d\n", ctrl.value); 248} 249static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); 250 251static ssize_t show_saturation(struct class_device *cd, char *buf) 252{ 253 struct video_device *vdev = 254 container_of(cd, struct video_device, class_dev); 255 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 256 struct v4l2_control ctrl; 257 ctrl.id = V4L2_CID_SATURATION; 258 ctrl.value = 0; 259 if(usbvision->user) 260 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl); 261 return sprintf(buf, "%d\n", ctrl.value); 262} 263static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); 264 265static ssize_t show_streaming(struct class_device *cd, char *buf) 266{ 267 struct video_device *vdev = 268 container_of(cd, struct video_device, class_dev); 269 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 270 return sprintf(buf, "%s\n", 271 YES_NO(usbvision->streaming==Stream_On?1:0)); 272} 273static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); 274 275static ssize_t show_compression(struct class_device *cd, char *buf) 276{ 277 struct video_device *vdev = 278 container_of(cd, struct video_device, class_dev); 279 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 280 return sprintf(buf, "%s\n", 281 YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS)); 282} 283static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); 284 285static ssize_t show_device_bridge(struct class_device *cd, char *buf) 286{ 287 struct video_device *vdev = 288 container_of(cd, struct video_device, class_dev); 289 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 290 return sprintf(buf, "%d\n", usbvision->bridgeType); 291} 292static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); 293 294static void usbvision_create_sysfs(struct video_device *vdev) 295{ 296 int res; 297 if (!vdev) 298 return; 299 do { 300 res=class_device_create_file(&vdev->class_dev, 301 &class_device_attr_version); 302 if (res<0) 303 break; 304 res=class_device_create_file(&vdev->class_dev, 305 &class_device_attr_model); 306 if (res<0) 307 break; 308 res=class_device_create_file(&vdev->class_dev, 309 &class_device_attr_hue); 310 if (res<0) 311 break; 312 res=class_device_create_file(&vdev->class_dev, 313 &class_device_attr_contrast); 314 if (res<0) 315 break; 316 res=class_device_create_file(&vdev->class_dev, 317 &class_device_attr_brightness); 318 if (res<0) 319 break; 320 res=class_device_create_file(&vdev->class_dev, 321 &class_device_attr_saturation); 322 if (res<0) 323 break; 324 res=class_device_create_file(&vdev->class_dev, 325 &class_device_attr_streaming); 326 if (res<0) 327 break; 328 res=class_device_create_file(&vdev->class_dev, 329 &class_device_attr_compression); 330 if (res<0) 331 break; 332 res=class_device_create_file(&vdev->class_dev, 333 &class_device_attr_bridge); 334 if (res>=0) 335 return; 336 } while (0); 337 338 err("%s error: %d\n", __FUNCTION__, res); 339} 340 341static void usbvision_remove_sysfs(struct video_device *vdev) 342{ 343 if (vdev) { 344 class_device_remove_file(&vdev->class_dev, 345 &class_device_attr_version); 346 class_device_remove_file(&vdev->class_dev, 347 &class_device_attr_model); 348 class_device_remove_file(&vdev->class_dev, 349 &class_device_attr_hue); 350 class_device_remove_file(&vdev->class_dev, 351 &class_device_attr_contrast); 352 class_device_remove_file(&vdev->class_dev, 353 &class_device_attr_brightness); 354 class_device_remove_file(&vdev->class_dev, 355 &class_device_attr_saturation); 356 class_device_remove_file(&vdev->class_dev, 357 &class_device_attr_streaming); 358 class_device_remove_file(&vdev->class_dev, 359 &class_device_attr_compression); 360 class_device_remove_file(&vdev->class_dev, 361 &class_device_attr_bridge); 362 } 363} 364 365 366/* 367 * usbvision_open() 368 * 369 * This is part of Video 4 Linux API. The driver can be opened by one 370 * client only (checks internal counter 'usbvision->user'). The procedure 371 * then allocates buffers needed for video processing. 372 * 373 */ 374static int usbvision_v4l2_open(struct inode *inode, struct file *file) 375{ 376 struct video_device *dev = video_devdata(file); 377 struct usb_usbvision *usbvision = 378 (struct usb_usbvision *) video_get_drvdata(dev); 379 int errCode = 0; 380 381 PDEBUG(DBG_IO, "open"); 382 383 384 usbvision_reset_powerOffTimer(usbvision); 385 386 if (usbvision->user) 387 errCode = -EBUSY; 388 else { 389 /* Allocate memory for the scratch ring buffer */ 390 errCode = usbvision_scratch_alloc(usbvision); 391 if (isocMode==ISOC_MODE_COMPRESS) { 392 /* Allocate intermediate decompression buffers 393 only if needed */ 394 errCode = usbvision_decompress_alloc(usbvision); 395 } 396 if (errCode) { 397 /* Deallocate all buffers if trouble */ 398 usbvision_scratch_free(usbvision); 399 usbvision_decompress_free(usbvision); 400 } 401 } 402 403 /* If so far no errors then we shall start the camera */ 404 if (!errCode) { 405 down(&usbvision->lock); 406 if (usbvision->power == 0) { 407 usbvision_power_on(usbvision); 408 usbvision_i2c_register(usbvision); 409 } 410 411 /* Send init sequence only once, it's large! */ 412 if (!usbvision->initialized) { 413 int setup_ok = 0; 414 setup_ok = usbvision_setup(usbvision,isocMode); 415 if (setup_ok) 416 usbvision->initialized = 1; 417 else 418 errCode = -EBUSY; 419 } 420 421 if (!errCode) { 422 usbvision_begin_streaming(usbvision); 423 errCode = usbvision_init_isoc(usbvision); 424 /* device must be initialized before isoc transfer */ 425 usbvision_muxsel(usbvision,0); 426 usbvision->user++; 427 } else { 428 if (PowerOnAtOpen) { 429 usbvision_i2c_unregister(usbvision); 430 usbvision_power_off(usbvision); 431 usbvision->initialized = 0; 432 } 433 } 434 up(&usbvision->lock); 435 } 436 437 if (errCode) { 438 } 439 440 /* prepare queues */ 441 usbvision_empty_framequeues(usbvision); 442 443 PDEBUG(DBG_IO, "success"); 444 return errCode; 445} 446 447/* 448 * usbvision_v4l2_close() 449 * 450 * This is part of Video 4 Linux API. The procedure 451 * stops streaming and deallocates all buffers that were earlier 452 * allocated in usbvision_v4l2_open(). 453 * 454 */ 455static int usbvision_v4l2_close(struct inode *inode, struct file *file) 456{ 457 struct video_device *dev = video_devdata(file); 458 struct usb_usbvision *usbvision = 459 (struct usb_usbvision *) video_get_drvdata(dev); 460 461 PDEBUG(DBG_IO, "close"); 462 down(&usbvision->lock); 463 464 usbvision_audio_off(usbvision); 465 usbvision_restart_isoc(usbvision); 466 usbvision_stop_isoc(usbvision); 467 468 usbvision_decompress_free(usbvision); 469 usbvision_frames_free(usbvision); 470 usbvision_empty_framequeues(usbvision); 471 usbvision_scratch_free(usbvision); 472 473 usbvision->user--; 474 475 if (PowerOnAtOpen) { 476 /* power off in a little while 477 to avoid off/on every close/open short sequences */ 478 usbvision_set_powerOffTimer(usbvision); 479 usbvision->initialized = 0; 480 } 481 482 up(&usbvision->lock); 483 484 if (usbvision->remove_pending) { 485 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__); 486 usbvision_release(usbvision); 487 } 488 489 PDEBUG(DBG_IO, "success"); 490 491 492 return 0; 493} 494 495 496/* 497 * usbvision_ioctl() 498 * 499 * This is part of Video 4 Linux API. The procedure handles ioctl() calls. 500 * 501 */ 502#ifdef CONFIG_VIDEO_ADV_DEBUG 503static int vidioc_g_register (struct file *file, void *priv, 504 struct v4l2_register *reg) 505{ 506 struct video_device *dev = video_devdata(file); 507 struct usb_usbvision *usbvision = 508 (struct usb_usbvision *) video_get_drvdata(dev); 509 int errCode; 510 511 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) 512 return -EINVAL; 513 /* NT100x has a 8-bit register space */ 514 errCode = usbvision_read_reg(usbvision, reg->reg&0xff); 515 if (errCode < 0) { 516 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d", 517 __FUNCTION__, errCode); 518 return errCode; 519 } 520 reg->val = errCode; 521 return 0; 522} 523 524static int vidioc_s_register (struct file *file, void *priv, 525 struct v4l2_register *reg) 526{ 527 struct video_device *dev = video_devdata(file); 528 struct usb_usbvision *usbvision = 529 (struct usb_usbvision *) video_get_drvdata(dev); 530 int errCode; 531 532 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) 533 return -EINVAL; 534 /* NT100x has a 8-bit register space */ 535 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val); 536 if (errCode < 0) { 537 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d", 538 __FUNCTION__, errCode); 539 return errCode; 540 } 541 return 0; 542} 543#endif 544 545static int vidioc_querycap (struct file *file, void *priv, 546 struct v4l2_capability *vc) 547{ 548 struct video_device *dev = video_devdata(file); 549 struct usb_usbvision *usbvision = 550 (struct usb_usbvision *) video_get_drvdata(dev); 551 552 strlcpy(vc->driver, "USBVision", sizeof(vc->driver)); 553 strlcpy(vc->card, 554 usbvision_device_data[usbvision->DevModel].ModelString, 555 sizeof(vc->card)); 556 strlcpy(vc->bus_info, usbvision->dev->dev.bus_id, 557 sizeof(vc->bus_info)); 558 vc->version = USBVISION_DRIVER_VERSION; 559 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | 560 V4L2_CAP_AUDIO | 561 V4L2_CAP_READWRITE | 562 V4L2_CAP_STREAMING | 563 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0); 564 return 0; 565} 566 567static int vidioc_enum_input (struct file *file, void *priv, 568 struct v4l2_input *vi) 569{ 570 struct video_device *dev = video_devdata(file); 571 struct usb_usbvision *usbvision = 572 (struct usb_usbvision *) video_get_drvdata(dev); 573 int chan; 574 575 if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) ) 576 return -EINVAL; 577 if (usbvision->have_tuner) { 578 chan = vi->index; 579 } else { 580 chan = vi->index + 1; /*skip Television string*/ 581 } 582 /* Determine the requested input characteristics 583 specific for each usbvision card model */ 584 switch(chan) { 585 case 0: 586 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 587 strcpy(vi->name, "White Video Input"); 588 } else { 589 strcpy(vi->name, "Television"); 590 vi->type = V4L2_INPUT_TYPE_TUNER; 591 vi->audioset = 1; 592 vi->tuner = chan; 593 vi->std = USBVISION_NORMS; 594 } 595 break; 596 case 1: 597 vi->type = V4L2_INPUT_TYPE_CAMERA; 598 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 599 strcpy(vi->name, "Green Video Input"); 600 } else { 601 strcpy(vi->name, "Composite Video Input"); 602 } 603 vi->std = V4L2_STD_PAL; 604 break; 605 case 2: 606 vi->type = V4L2_INPUT_TYPE_CAMERA; 607 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 608 strcpy(vi->name, "Yellow Video Input"); 609 } else { 610 strcpy(vi->name, "S-Video Input"); 611 } 612 vi->std = V4L2_STD_PAL; 613 break; 614 case 3: 615 vi->type = V4L2_INPUT_TYPE_CAMERA; 616 strcpy(vi->name, "Red Video Input"); 617 vi->std = V4L2_STD_PAL; 618 break; 619 } 620 return 0; 621} 622 623static int vidioc_g_input (struct file *file, void *priv, unsigned int *input) 624{ 625 struct video_device *dev = video_devdata(file); 626 struct usb_usbvision *usbvision = 627 (struct usb_usbvision *) video_get_drvdata(dev); 628 629 *input = usbvision->ctl_input; 630 return 0; 631} 632 633static int vidioc_s_input (struct file *file, void *priv, unsigned int input) 634{ 635 struct video_device *dev = video_devdata(file); 636 struct usb_usbvision *usbvision = 637 (struct usb_usbvision *) video_get_drvdata(dev); 638 639 if ((input >= usbvision->video_inputs) || (input < 0) ) 640 return -EINVAL; 641 642 down(&usbvision->lock); 643 usbvision_muxsel(usbvision, input); 644 usbvision_set_input(usbvision); 645 usbvision_set_output(usbvision, 646 usbvision->curwidth, 647 usbvision->curheight); 648 up(&usbvision->lock); 649 return 0; 650} 651 652static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id) 653{ 654 struct video_device *dev = video_devdata(file); 655 struct usb_usbvision *usbvision = 656 (struct usb_usbvision *) video_get_drvdata(dev); 657 usbvision->tvnormId=*id; 658 659 down(&usbvision->lock); 660 call_i2c_clients(usbvision, VIDIOC_S_STD, 661 &usbvision->tvnormId); 662 up(&usbvision->lock); 663 /* propagate the change to the decoder */ 664 usbvision_muxsel(usbvision, usbvision->ctl_input); 665 666 return 0; 667} 668 669static int vidioc_g_tuner (struct file *file, void *priv, 670 struct v4l2_tuner *vt) 671{ 672 struct video_device *dev = video_devdata(file); 673 struct usb_usbvision *usbvision = 674 (struct usb_usbvision *) video_get_drvdata(dev); 675 676 if (!usbvision->have_tuner || vt->index) // Only tuner 0 677 return -EINVAL; 678 if(usbvision->radio) { 679 strcpy(vt->name, "Radio"); 680 vt->type = V4L2_TUNER_RADIO; 681 } else { 682 strcpy(vt->name, "Television"); 683 } 684 /* Let clients fill in the remainder of this struct */ 685 call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt); 686 687 return 0; 688} 689 690static int vidioc_s_tuner (struct file *file, void *priv, 691 struct v4l2_tuner *vt) 692{ 693 struct video_device *dev = video_devdata(file); 694 struct usb_usbvision *usbvision = 695 (struct usb_usbvision *) video_get_drvdata(dev); 696 697 // Only no or one tuner for now 698 if (!usbvision->have_tuner || vt->index) 699 return -EINVAL; 700 /* let clients handle this */ 701 call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt); 702 703 return 0; 704} 705 706static int vidioc_g_frequency (struct file *file, void *priv, 707 struct v4l2_frequency *freq) 708{ 709 struct video_device *dev = video_devdata(file); 710 struct usb_usbvision *usbvision = 711 (struct usb_usbvision *) video_get_drvdata(dev); 712 713 freq->tuner = 0; // Only one tuner 714 if(usbvision->radio) { 715 freq->type = V4L2_TUNER_RADIO; 716 } else { 717 freq->type = V4L2_TUNER_ANALOG_TV; 718 } 719 freq->frequency = usbvision->freq; 720 721 return 0; 722} 723 724static int vidioc_s_frequency (struct file *file, void *priv, 725 struct v4l2_frequency *freq) 726{ 727 struct video_device *dev = video_devdata(file); 728 struct usb_usbvision *usbvision = 729 (struct usb_usbvision *) video_get_drvdata(dev); 730 731 // Only no or one tuner for now 732 if (!usbvision->have_tuner || freq->tuner) 733 return -EINVAL; 734 735 usbvision->freq = freq->frequency; 736 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq); 737 738 return 0; 739} 740 741static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a) 742{ 743 struct video_device *dev = video_devdata(file); 744 struct usb_usbvision *usbvision = 745 (struct usb_usbvision *) video_get_drvdata(dev); 746 747 memset(a,0,sizeof(*a)); 748 if(usbvision->radio) { 749 strcpy(a->name,"Radio"); 750 } else { 751 strcpy(a->name, "TV"); 752 } 753 754 return 0; 755} 756 757static int vidioc_s_audio (struct file *file, void *fh, 758 struct v4l2_audio *a) 759{ 760 if(a->index) { 761 return -EINVAL; 762 } 763 764 return 0; 765} 766 767static int vidioc_queryctrl (struct file *file, void *priv, 768 struct v4l2_queryctrl *ctrl) 769{ 770 struct video_device *dev = video_devdata(file); 771 struct usb_usbvision *usbvision = 772 (struct usb_usbvision *) video_get_drvdata(dev); 773 int id=ctrl->id; 774 775 memset(ctrl,0,sizeof(*ctrl)); 776 ctrl->id=id; 777 778 call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl); 779 780 if (!ctrl->type) 781 return -EINVAL; 782 783 return 0; 784} 785 786static int vidioc_g_ctrl (struct file *file, void *priv, 787 struct v4l2_control *ctrl) 788{ 789 struct video_device *dev = video_devdata(file); 790 struct usb_usbvision *usbvision = 791 (struct usb_usbvision *) video_get_drvdata(dev); 792 call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl); 793 794 return 0; 795} 796 797static int vidioc_s_ctrl (struct file *file, void *priv, 798 struct v4l2_control *ctrl) 799{ 800 struct video_device *dev = video_devdata(file); 801 struct usb_usbvision *usbvision = 802 (struct usb_usbvision *) video_get_drvdata(dev); 803 call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl); 804 805 return 0; 806} 807 808static int vidioc_reqbufs (struct file *file, 809 void *priv, struct v4l2_requestbuffers *vr) 810{ 811 struct video_device *dev = video_devdata(file); 812 struct usb_usbvision *usbvision = 813 (struct usb_usbvision *) video_get_drvdata(dev); 814 int ret; 815 816 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES); 817 818 /* Check input validity: 819 the user must do a VIDEO CAPTURE and MMAP method. */ 820 if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) || 821 (vr->memory != V4L2_MEMORY_MMAP)) 822 return -EINVAL; 823 824 if(usbvision->streaming == Stream_On) { 825 if ((ret = usbvision_stream_interrupt(usbvision))) 826 return ret; 827 } 828 829 usbvision_frames_free(usbvision); 830 usbvision_empty_framequeues(usbvision); 831 vr->count = usbvision_frames_alloc(usbvision,vr->count); 832 833 usbvision->curFrame = NULL; 834 835 return 0; 836} 837 838static int vidioc_querybuf (struct file *file, 839 void *priv, struct v4l2_buffer *vb) 840{ 841 struct video_device *dev = video_devdata(file); 842 struct usb_usbvision *usbvision = 843 (struct usb_usbvision *) video_get_drvdata(dev); 844 struct usbvision_frame *frame; 845 846 /* FIXME : must control 847 that buffers are mapped (VIDIOC_REQBUFS has been called) */ 848 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) { 849 return -EINVAL; 850 } 851 if(vb->index>=usbvision->num_frames) { 852 return -EINVAL; 853 } 854 /* Updating the corresponding frame state */ 855 vb->flags = 0; 856 frame = &usbvision->frame[vb->index]; 857 if(frame->grabstate >= FrameState_Ready) 858 vb->flags |= V4L2_BUF_FLAG_QUEUED; 859 if(frame->grabstate >= FrameState_Done) 860 vb->flags |= V4L2_BUF_FLAG_DONE; 861 if(frame->grabstate == FrameState_Unused) 862 vb->flags |= V4L2_BUF_FLAG_MAPPED; 863 vb->memory = V4L2_MEMORY_MMAP; 864 865 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size); 866 867 vb->memory = V4L2_MEMORY_MMAP; 868 vb->field = V4L2_FIELD_NONE; 869 vb->length = usbvision->curwidth* 870 usbvision->curheight* 871 usbvision->palette.bytes_per_pixel; 872 vb->timestamp = usbvision->frame[vb->index].timestamp; 873 vb->sequence = usbvision->frame[vb->index].sequence; 874 return 0; 875} 876 877static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb) 878{ 879 struct video_device *dev = video_devdata(file); 880 struct usb_usbvision *usbvision = 881 (struct usb_usbvision *) video_get_drvdata(dev); 882 struct usbvision_frame *frame; 883 unsigned long lock_flags; 884 885 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */ 886 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) { 887 return -EINVAL; 888 } 889 if(vb->index>=usbvision->num_frames) { 890 return -EINVAL; 891 } 892 893 frame = &usbvision->frame[vb->index]; 894 895 if (frame->grabstate != FrameState_Unused) { 896 return -EAGAIN; 897 } 898 899 /* Mark it as ready and enqueue frame */ 900 frame->grabstate = FrameState_Ready; 901 frame->scanstate = ScanState_Scanning; 902 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */ 903 904 vb->flags &= ~V4L2_BUF_FLAG_DONE; 905 906 /* set v4l2_format index */ 907 frame->v4l2_format = usbvision->palette; 908 909 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 910 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue); 911 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 912 913 return 0; 914} 915 916static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb) 917{ 918 struct video_device *dev = video_devdata(file); 919 struct usb_usbvision *usbvision = 920 (struct usb_usbvision *) video_get_drvdata(dev); 921 int ret; 922 struct usbvision_frame *f; 923 unsigned long lock_flags; 924 925 if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 926 return -EINVAL; 927 928 if (list_empty(&(usbvision->outqueue))) { 929 if (usbvision->streaming == Stream_Idle) 930 return -EINVAL; 931 ret = wait_event_interruptible 932 (usbvision->wait_frame, 933 !list_empty(&(usbvision->outqueue))); 934 if (ret) 935 return ret; 936 } 937 938 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 939 f = list_entry(usbvision->outqueue.next, 940 struct usbvision_frame, frame); 941 list_del(usbvision->outqueue.next); 942 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 943 944 f->grabstate = FrameState_Unused; 945 946 vb->memory = V4L2_MEMORY_MMAP; 947 vb->flags = V4L2_BUF_FLAG_MAPPED | 948 V4L2_BUF_FLAG_QUEUED | 949 V4L2_BUF_FLAG_DONE; 950 vb->index = f->index; 951 vb->sequence = f->sequence; 952 vb->timestamp = f->timestamp; 953 vb->field = V4L2_FIELD_NONE; 954 vb->bytesused = f->scanlength; 955 956 return 0; 957} 958 959static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) 960{ 961 struct video_device *dev = video_devdata(file); 962 struct usb_usbvision *usbvision = 963 (struct usb_usbvision *) video_get_drvdata(dev); 964 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE; 965 966 usbvision->streaming = Stream_On; 967 call_i2c_clients(usbvision,VIDIOC_STREAMON , &b); 968 969 return 0; 970} 971 972static int vidioc_streamoff(struct file *file, 973 void *priv, enum v4l2_buf_type type) 974{ 975 struct video_device *dev = video_devdata(file); 976 struct usb_usbvision *usbvision = 977 (struct usb_usbvision *) video_get_drvdata(dev); 978 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE; 979 980 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 981 return -EINVAL; 982 983 if(usbvision->streaming == Stream_On) { 984 usbvision_stream_interrupt(usbvision); 985 /* Stop all video streamings */ 986 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b); 987 } 988 usbvision_empty_framequeues(usbvision); 989 990 return 0; 991} 992 993static int vidioc_enum_fmt_cap (struct file *file, void *priv, 994 struct v4l2_fmtdesc *vfd) 995{ 996 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) { 997 return -EINVAL; 998 } 999 vfd->flags = 0; 1000 vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1001 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc); 1002 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format; 1003 memset(vfd->reserved, 0, sizeof(vfd->reserved)); 1004 return 0; 1005} 1006 1007static int vidioc_g_fmt_cap (struct file *file, void *priv, 1008 struct v4l2_format *vf) 1009{ 1010 struct video_device *dev = video_devdata(file); 1011 struct usb_usbvision *usbvision = 1012 (struct usb_usbvision *) video_get_drvdata(dev); 1013 vf->fmt.pix.width = usbvision->curwidth; 1014 vf->fmt.pix.height = usbvision->curheight; 1015 vf->fmt.pix.pixelformat = usbvision->palette.format; 1016 vf->fmt.pix.bytesperline = 1017 usbvision->curwidth*usbvision->palette.bytes_per_pixel; 1018 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight; 1019 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1020 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ 1021 1022 return 0; 1023} 1024 1025static int vidioc_try_fmt_cap (struct file *file, void *priv, 1026 struct v4l2_format *vf) 1027{ 1028 struct video_device *dev = video_devdata(file); 1029 struct usb_usbvision *usbvision = 1030 (struct usb_usbvision *) video_get_drvdata(dev); 1031 int formatIdx; 1032 1033 /* Find requested format in available ones */ 1034 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) { 1035 if(vf->fmt.pix.pixelformat == 1036 usbvision_v4l2_format[formatIdx].format) { 1037 usbvision->palette = usbvision_v4l2_format[formatIdx]; 1038 break; 1039 } 1040 } 1041 /* robustness */ 1042 if(formatIdx == USBVISION_SUPPORTED_PALETTES) { 1043 return -EINVAL; 1044 } 1045 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH); 1046 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT); 1047 1048 vf->fmt.pix.bytesperline = vf->fmt.pix.width* 1049 usbvision->palette.bytes_per_pixel; 1050 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height; 1051 1052 return 0; 1053} 1054 1055static int vidioc_s_fmt_cap(struct file *file, void *priv, 1056 struct v4l2_format *vf) 1057{ 1058 struct video_device *dev = video_devdata(file); 1059 struct usb_usbvision *usbvision = 1060 (struct usb_usbvision *) video_get_drvdata(dev); 1061 int ret; 1062 1063 if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) { 1064 return ret; 1065 } 1066 1067 /* stop io in case it is already in progress */ 1068 if(usbvision->streaming == Stream_On) { 1069 if ((ret = usbvision_stream_interrupt(usbvision))) 1070 return ret; 1071 } 1072 usbvision_frames_free(usbvision); 1073 usbvision_empty_framequeues(usbvision); 1074 1075 usbvision->curFrame = NULL; 1076 1077 /* by now we are committed to the new data... */ 1078 down(&usbvision->lock); 1079 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); 1080 up(&usbvision->lock); 1081 1082 return 0; 1083} 1084 1085static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf, 1086 size_t count, loff_t *ppos) 1087{ 1088 struct video_device *dev = video_devdata(file); 1089 struct usb_usbvision *usbvision = 1090 (struct usb_usbvision *) video_get_drvdata(dev); 1091 int noblock = file->f_flags & O_NONBLOCK; 1092 unsigned long lock_flags; 1093 1094 int ret,i; 1095 struct usbvision_frame *frame; 1096 1097 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, 1098 (unsigned long)count, noblock); 1099 1100 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL)) 1101 return -EFAULT; 1102 1103 /* This entry point is compatible with the mmap routines 1104 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF 1105 to get frames or call read on the device. */ 1106 if(!usbvision->num_frames) { 1107 /* First, allocate some frames to work with 1108 if this has not been done with VIDIOC_REQBUF */ 1109 usbvision_frames_free(usbvision); 1110 usbvision_empty_framequeues(usbvision); 1111 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES); 1112 } 1113 1114 if(usbvision->streaming != Stream_On) { 1115 /* no stream is running, make it running ! */ 1116 usbvision->streaming = Stream_On; 1117 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL); 1118 } 1119 1120 /* Then, enqueue as many frames as possible 1121 (like a user of VIDIOC_QBUF would do) */ 1122 for(i=0;i<usbvision->num_frames;i++) { 1123 frame = &usbvision->frame[i]; 1124 if(frame->grabstate == FrameState_Unused) { 1125 /* Mark it as ready and enqueue frame */ 1126 frame->grabstate = FrameState_Ready; 1127 frame->scanstate = ScanState_Scanning; 1128 /* Accumulated in usbvision_parse_data() */ 1129 frame->scanlength = 0; 1130 1131 /* set v4l2_format index */ 1132 frame->v4l2_format = usbvision->palette; 1133 1134 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1135 list_add_tail(&frame->frame, &usbvision->inqueue); 1136 spin_unlock_irqrestore(&usbvision->queue_lock, 1137 lock_flags); 1138 } 1139 } 1140 1141 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */ 1142 if (list_empty(&(usbvision->outqueue))) { 1143 if(noblock) 1144 return -EAGAIN; 1145 1146 ret = wait_event_interruptible 1147 (usbvision->wait_frame, 1148 !list_empty(&(usbvision->outqueue))); 1149 if (ret) 1150 return ret; 1151 } 1152 1153 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1154 frame = list_entry(usbvision->outqueue.next, 1155 struct usbvision_frame, frame); 1156 list_del(usbvision->outqueue.next); 1157 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 1158 1159 /* An error returns an empty frame */ 1160 if (frame->grabstate == FrameState_Error) { 1161 frame->bytes_read = 0; 1162 return 0; 1163 } 1164 1165 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", 1166 __FUNCTION__, 1167 frame->index, frame->bytes_read, frame->scanlength); 1168 1169 /* copy bytes to user space; we allow for partials reads */ 1170 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength) 1171 count = frame->scanlength - frame->bytes_read; 1172 1173 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) { 1174 return -EFAULT; 1175 } 1176 1177 frame->bytes_read += count; 1178 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", 1179 __FUNCTION__, 1180 (unsigned long)count, frame->bytes_read); 1181 1182 /* For now, forget the frame if it has not been read in one shot. */ 1183/* if (frame->bytes_read >= frame->scanlength) {// All data has been read */ 1184 frame->bytes_read = 0; 1185 1186 /* Mark it as available to be used again. */ 1187 frame->grabstate = FrameState_Unused; 1188/* } */ 1189 1190 return count; 1191} 1192 1193static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) 1194{ 1195 unsigned long size = vma->vm_end - vma->vm_start, 1196 start = vma->vm_start; 1197 void *pos; 1198 u32 i; 1199 1200 struct video_device *dev = video_devdata(file); 1201 struct usb_usbvision *usbvision = 1202 (struct usb_usbvision *) video_get_drvdata(dev); 1203 1204 PDEBUG(DBG_MMAP, "mmap"); 1205 1206 down(&usbvision->lock); 1207 1208 if (!USBVISION_IS_OPERATIONAL(usbvision)) { 1209 up(&usbvision->lock); 1210 return -EFAULT; 1211 } 1212 1213 if (!(vma->vm_flags & VM_WRITE) || 1214 size != PAGE_ALIGN(usbvision->max_frame_size)) { 1215 up(&usbvision->lock); 1216 return -EINVAL; 1217 } 1218 1219 for (i = 0; i < usbvision->num_frames; i++) { 1220 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == 1221 vma->vm_pgoff) 1222 break; 1223 } 1224 if (i == usbvision->num_frames) { 1225 PDEBUG(DBG_MMAP, 1226 "mmap: user supplied mapping address is out of range"); 1227 up(&usbvision->lock); 1228 return -EINVAL; 1229 } 1230 1231 /* VM_IO is eventually going to replace PageReserved altogether */ 1232 vma->vm_flags |= VM_IO; 1233 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ 1234 1235 pos = usbvision->frame[i].data; 1236 while (size > 0) { 1237 1238 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { 1239 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); 1240 up(&usbvision->lock); 1241 return -EAGAIN; 1242 } 1243 start += PAGE_SIZE; 1244 pos += PAGE_SIZE; 1245 size -= PAGE_SIZE; 1246 } 1247 1248 up(&usbvision->lock); 1249 return 0; 1250} 1251 1252 1253/* 1254 * Here comes the stuff for radio on usbvision based devices 1255 * 1256 */ 1257static int usbvision_radio_open(struct inode *inode, struct file *file) 1258{ 1259 struct video_device *dev = video_devdata(file); 1260 struct usb_usbvision *usbvision = 1261 (struct usb_usbvision *) video_get_drvdata(dev); 1262 int errCode = 0; 1263 1264 PDEBUG(DBG_IO, "%s:", __FUNCTION__); 1265 1266 down(&usbvision->lock); 1267 1268 if (usbvision->user) { 1269 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__); 1270 errCode = -EBUSY; 1271 } 1272 else { 1273 if(PowerOnAtOpen) { 1274 usbvision_reset_powerOffTimer(usbvision); 1275 if (usbvision->power == 0) { 1276 usbvision_power_on(usbvision); 1277 usbvision_i2c_register(usbvision); 1278 } 1279 } 1280 1281 /* Alternate interface 1 is is the biggest frame size */ 1282 errCode = usbvision_set_alternate(usbvision); 1283 if (errCode < 0) { 1284 usbvision->last_error = errCode; 1285 return -EBUSY; 1286 } 1287 1288 // If so far no errors then we shall start the radio 1289 usbvision->radio = 1; 1290 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type); 1291 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); 1292 usbvision->user++; 1293 } 1294 1295 if (errCode) { 1296 if (PowerOnAtOpen) { 1297 usbvision_i2c_unregister(usbvision); 1298 usbvision_power_off(usbvision); 1299 usbvision->initialized = 0; 1300 } 1301 } 1302 up(&usbvision->lock); 1303 return errCode; 1304} 1305 1306 1307static int usbvision_radio_close(struct inode *inode, struct file *file) 1308{ 1309 struct video_device *dev = video_devdata(file); 1310 struct usb_usbvision *usbvision = 1311 (struct usb_usbvision *) video_get_drvdata(dev); 1312 int errCode = 0; 1313 1314 PDEBUG(DBG_IO, ""); 1315 1316 down(&usbvision->lock); 1317 1318 /* Set packet size to 0 */ 1319 usbvision->ifaceAlt=0; 1320 errCode = usb_set_interface(usbvision->dev, usbvision->iface, 1321 usbvision->ifaceAlt); 1322 1323 usbvision_audio_off(usbvision); 1324 usbvision->radio=0; 1325 usbvision->user--; 1326 1327 if (PowerOnAtOpen) { 1328 usbvision_set_powerOffTimer(usbvision); 1329 usbvision->initialized = 0; 1330 } 1331 1332 up(&usbvision->lock); 1333 1334 if (usbvision->remove_pending) { 1335 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__); 1336 usbvision_release(usbvision); 1337 } 1338 1339 1340 PDEBUG(DBG_IO, "success"); 1341 1342 return errCode; 1343} 1344 1345/* 1346 * Here comes the stuff for vbi on usbvision based devices 1347 * 1348 */ 1349static int usbvision_vbi_open(struct inode *inode, struct file *file) 1350{ 1351 /* TODO */ 1352 return -ENODEV; 1353 1354} 1355 1356static int usbvision_vbi_close(struct inode *inode, struct file *file) 1357{ 1358 /* TODO */ 1359 return -ENODEV; 1360} 1361 1362static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file, 1363 unsigned int cmd, void *arg) 1364{ 1365 /* TODO */ 1366 return -ENOIOCTLCMD; 1367} 1368 1369static int usbvision_vbi_ioctl(struct inode *inode, struct file *file, 1370 unsigned int cmd, unsigned long arg) 1371{ 1372 return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl); 1373} 1374 1375 1376// 1377// Video registration stuff 1378// 1379 1380// Video template 1381static const struct file_operations usbvision_fops = { 1382 .owner = THIS_MODULE, 1383 .open = usbvision_v4l2_open, 1384 .release = usbvision_v4l2_close, 1385 .read = usbvision_v4l2_read, 1386 .mmap = usbvision_v4l2_mmap, 1387 .ioctl = video_ioctl2, 1388 .llseek = no_llseek, 1389/* .poll = video_poll, */ 1390 .compat_ioctl = v4l_compat_ioctl32, 1391}; 1392static struct video_device usbvision_video_template = { 1393 .owner = THIS_MODULE, 1394 .type = VID_TYPE_TUNER | VID_TYPE_CAPTURE, 1395 .hardware = VID_HARDWARE_USBVISION, 1396 .fops = &usbvision_fops, 1397 .name = "usbvision-video", 1398 .release = video_device_release, 1399 .minor = -1, 1400 .vidioc_querycap = vidioc_querycap, 1401 .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, 1402 .vidioc_g_fmt_cap = vidioc_g_fmt_cap, 1403 .vidioc_try_fmt_cap = vidioc_try_fmt_cap, 1404 .vidioc_s_fmt_cap = vidioc_s_fmt_cap, 1405 .vidioc_reqbufs = vidioc_reqbufs, 1406 .vidioc_querybuf = vidioc_querybuf, 1407 .vidioc_qbuf = vidioc_qbuf, 1408 .vidioc_dqbuf = vidioc_dqbuf, 1409 .vidioc_s_std = vidioc_s_std, 1410 .vidioc_enum_input = vidioc_enum_input, 1411 .vidioc_g_input = vidioc_g_input, 1412 .vidioc_s_input = vidioc_s_input, 1413 .vidioc_queryctrl = vidioc_queryctrl, 1414 .vidioc_g_audio = vidioc_g_audio, 1415 .vidioc_s_audio = vidioc_s_audio, 1416 .vidioc_g_ctrl = vidioc_g_ctrl, 1417 .vidioc_s_ctrl = vidioc_s_ctrl, 1418 .vidioc_streamon = vidioc_streamon, 1419 .vidioc_streamoff = vidioc_streamoff, 1420#ifdef CONFIG_VIDEO_V4L1_COMPAT 1421/* .vidiocgmbuf = vidiocgmbuf, */ 1422#endif 1423 .vidioc_g_tuner = vidioc_g_tuner, 1424 .vidioc_s_tuner = vidioc_s_tuner, 1425 .vidioc_g_frequency = vidioc_g_frequency, 1426 .vidioc_s_frequency = vidioc_s_frequency, 1427#ifdef CONFIG_VIDEO_ADV_DEBUG 1428 .vidioc_g_register = vidioc_g_register, 1429 .vidioc_s_register = vidioc_s_register, 1430#endif 1431 .tvnorms = USBVISION_NORMS, 1432 .current_norm = V4L2_STD_PAL 1433}; 1434 1435 1436// Radio template 1437static const struct file_operations usbvision_radio_fops = { 1438 .owner = THIS_MODULE, 1439 .open = usbvision_radio_open, 1440 .release = usbvision_radio_close, 1441 .ioctl = video_ioctl2, 1442 .llseek = no_llseek, 1443 .compat_ioctl = v4l_compat_ioctl32, 1444}; 1445 1446static struct video_device usbvision_radio_template= 1447{ 1448 .owner = THIS_MODULE, 1449 .type = VID_TYPE_TUNER, 1450 .hardware = VID_HARDWARE_USBVISION, 1451 .fops = &usbvision_radio_fops, 1452 .name = "usbvision-radio", 1453 .release = video_device_release, 1454 .minor = -1, 1455 .vidioc_querycap = vidioc_querycap, 1456 .vidioc_enum_input = vidioc_enum_input, 1457 .vidioc_g_input = vidioc_g_input, 1458 .vidioc_s_input = vidioc_s_input, 1459 .vidioc_queryctrl = vidioc_queryctrl, 1460 .vidioc_g_audio = vidioc_g_audio, 1461 .vidioc_s_audio = vidioc_s_audio, 1462 .vidioc_g_ctrl = vidioc_g_ctrl, 1463 .vidioc_s_ctrl = vidioc_s_ctrl, 1464 .vidioc_g_tuner = vidioc_g_tuner, 1465 .vidioc_s_tuner = vidioc_s_tuner, 1466 .vidioc_g_frequency = vidioc_g_frequency, 1467 .vidioc_s_frequency = vidioc_s_frequency, 1468 1469 .tvnorms = USBVISION_NORMS, 1470 .current_norm = V4L2_STD_PAL 1471}; 1472 1473// vbi template 1474static const struct file_operations usbvision_vbi_fops = { 1475 .owner = THIS_MODULE, 1476 .open = usbvision_vbi_open, 1477 .release = usbvision_vbi_close, 1478 .ioctl = usbvision_vbi_ioctl, 1479 .llseek = no_llseek, 1480 .compat_ioctl = v4l_compat_ioctl32, 1481}; 1482 1483static struct video_device usbvision_vbi_template= 1484{ 1485 .owner = THIS_MODULE, 1486 .type = VID_TYPE_TUNER, 1487 .hardware = VID_HARDWARE_USBVISION, 1488 .fops = &usbvision_vbi_fops, 1489 .release = video_device_release, 1490 .name = "usbvision-vbi", 1491 .minor = -1, 1492}; 1493 1494 1495static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision, 1496 struct video_device *vdev_template, 1497 char *name) 1498{ 1499 struct usb_device *usb_dev = usbvision->dev; 1500 struct video_device *vdev; 1501 1502 if (usb_dev == NULL) { 1503 err("%s: usbvision->dev is not set", __FUNCTION__); 1504 return NULL; 1505 } 1506 1507 vdev = video_device_alloc(); 1508 if (NULL == vdev) { 1509 return NULL; 1510 } 1511 *vdev = *vdev_template; 1512// vdev->minor = -1; 1513 vdev->dev = &usb_dev->dev; 1514 snprintf(vdev->name, sizeof(vdev->name), "%s", name); 1515 video_set_drvdata(vdev, usbvision); 1516 return vdev; 1517} 1518 1519// unregister video4linux devices 1520static void usbvision_unregister_video(struct usb_usbvision *usbvision) 1521{ 1522 // vbi Device: 1523 if (usbvision->vbi) { 1524 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", 1525 usbvision->vbi->minor & 0x1f); 1526 if (usbvision->vbi->minor != -1) { 1527 video_unregister_device(usbvision->vbi); 1528 } else { 1529 video_device_release(usbvision->vbi); 1530 } 1531 usbvision->vbi = NULL; 1532 } 1533 1534 // Radio Device: 1535 if (usbvision->rdev) { 1536 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", 1537 usbvision->rdev->minor & 0x1f); 1538 if (usbvision->rdev->minor != -1) { 1539 video_unregister_device(usbvision->rdev); 1540 } else { 1541 video_device_release(usbvision->rdev); 1542 } 1543 usbvision->rdev = NULL; 1544 } 1545 1546 // Video Device: 1547 if (usbvision->vdev) { 1548 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", 1549 usbvision->vdev->minor & 0x1f); 1550 if (usbvision->vdev->minor != -1) { 1551 video_unregister_device(usbvision->vdev); 1552 } else { 1553 video_device_release(usbvision->vdev); 1554 } 1555 usbvision->vdev = NULL; 1556 } 1557} 1558 1559// register video4linux devices 1560static int __devinit usbvision_register_video(struct usb_usbvision *usbvision) 1561{ 1562 // Video Device: 1563 usbvision->vdev = usbvision_vdev_init(usbvision, 1564 &usbvision_video_template, 1565 "USBVision Video"); 1566 if (usbvision->vdev == NULL) { 1567 goto err_exit; 1568 } 1569 if (video_register_device(usbvision->vdev, 1570 VFL_TYPE_GRABBER, 1571 video_nr)<0) { 1572 goto err_exit; 1573 } 1574 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n", 1575 usbvision->nr,usbvision->vdev->minor & 0x1f); 1576 1577 // Radio Device: 1578 if (usbvision_device_data[usbvision->DevModel].Radio) { 1579 // usbvision has radio 1580 usbvision->rdev = usbvision_vdev_init(usbvision, 1581 &usbvision_radio_template, 1582 "USBVision Radio"); 1583 if (usbvision->rdev == NULL) { 1584 goto err_exit; 1585 } 1586 if (video_register_device(usbvision->rdev, 1587 VFL_TYPE_RADIO, 1588 radio_nr)<0) { 1589 goto err_exit; 1590 } 1591 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n", 1592 usbvision->nr, usbvision->rdev->minor & 0x1f); 1593 } 1594 // vbi Device: 1595 if (usbvision_device_data[usbvision->DevModel].vbi) { 1596 usbvision->vbi = usbvision_vdev_init(usbvision, 1597 &usbvision_vbi_template, 1598 "USBVision VBI"); 1599 if (usbvision->vdev == NULL) { 1600 goto err_exit; 1601 } 1602 if (video_register_device(usbvision->vbi, 1603 VFL_TYPE_VBI, 1604 vbi_nr)<0) { 1605 goto err_exit; 1606 } 1607 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n", 1608 usbvision->nr,usbvision->vbi->minor & 0x1f); 1609 } 1610 // all done 1611 return 0; 1612 1613 err_exit: 1614 err("USBVision[%d]: video_register_device() failed", usbvision->nr); 1615 usbvision_unregister_video(usbvision); 1616 return -1; 1617} 1618 1619/* 1620 * usbvision_alloc() 1621 * 1622 * This code allocates the struct usb_usbvision. 1623 * It is filled with default values. 1624 * 1625 * Returns NULL on error, a pointer to usb_usbvision else. 1626 * 1627 */ 1628static struct usb_usbvision *usbvision_alloc(struct usb_device *dev) 1629{ 1630 struct usb_usbvision *usbvision; 1631 1632 if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == 1633 NULL) { 1634 goto err_exit; 1635 } 1636 1637 usbvision->dev = dev; 1638 1639 init_MUTEX(&usbvision->lock); /* to 1 == available */ 1640 1641 // prepare control urb for control messages during interrupts 1642 usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); 1643 if (usbvision->ctrlUrb == NULL) { 1644 goto err_exit; 1645 } 1646 init_waitqueue_head(&usbvision->ctrlUrb_wq); 1647 init_MUTEX(&usbvision->ctrlUrbLock); /* to 1 == available */ 1648 1649 usbvision_init_powerOffTimer(usbvision); 1650 1651 return usbvision; 1652 1653err_exit: 1654 if (usbvision && usbvision->ctrlUrb) { 1655 usb_free_urb(usbvision->ctrlUrb); 1656 } 1657 if (usbvision) { 1658 kfree(usbvision); 1659 } 1660 return NULL; 1661} 1662 1663/* 1664 * usbvision_release() 1665 * 1666 * This code does final release of struct usb_usbvision. This happens 1667 * after the device is disconnected -and- all clients closed their files. 1668 * 1669 */ 1670static void usbvision_release(struct usb_usbvision *usbvision) 1671{ 1672 PDEBUG(DBG_PROBE, ""); 1673 1674 down(&usbvision->lock); 1675 1676 usbvision_reset_powerOffTimer(usbvision); 1677 1678 usbvision->initialized = 0; 1679 1680 up(&usbvision->lock); 1681 1682 usbvision_remove_sysfs(usbvision->vdev); 1683 usbvision_unregister_video(usbvision); 1684 1685 if (usbvision->ctrlUrb) { 1686 usb_free_urb(usbvision->ctrlUrb); 1687 } 1688 1689 kfree(usbvision); 1690 1691 PDEBUG(DBG_PROBE, "success"); 1692} 1693 1694 1695/*********************** usb interface **********************************/ 1696 1697static void usbvision_configure_video(struct usb_usbvision *usbvision) 1698{ 1699 int model; 1700 1701 if (usbvision == NULL) 1702 return; 1703 1704 model = usbvision->DevModel; 1705 usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24; 1706 1707 if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) { 1708 usbvision->Vin_Reg2_Preset = 1709 usbvision_device_data[usbvision->DevModel].Vin_Reg2; 1710 } else { 1711 usbvision->Vin_Reg2_Preset = 0; 1712 } 1713 1714 usbvision->tvnormId = usbvision_device_data[model].VideoNorm; 1715 1716 usbvision->video_inputs = usbvision_device_data[model].VideoChannels; 1717 usbvision->ctl_input = 0; 1718 1719 /* This should be here to make i2c clients to be able to register */ 1720 /* first switch off audio */ 1721 usbvision_audio_off(usbvision); 1722 if (!PowerOnAtOpen) { 1723 /* and then power up the noisy tuner */ 1724 usbvision_power_on(usbvision); 1725 usbvision_i2c_register(usbvision); 1726 } 1727} 1728 1729/* 1730 * usbvision_probe() 1731 * 1732 * This procedure queries device descriptor and accepts the interface 1733 * if it looks like USBVISION video device 1734 * 1735 */ 1736static int __devinit usbvision_probe(struct usb_interface *intf, 1737 const struct usb_device_id *devid) 1738{ 1739 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf)); 1740 struct usb_interface *uif; 1741 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber; 1742 const struct usb_host_interface *interface; 1743 struct usb_usbvision *usbvision = NULL; 1744 const struct usb_endpoint_descriptor *endpoint; 1745 int model,i; 1746 1747 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u", 1748 dev->descriptor.idVendor, 1749 dev->descriptor.idProduct, ifnum); 1750 1751 model = devid->driver_info; 1752 if ( (model<0) || (model>=usbvision_device_data_size) ) { 1753 PDEBUG(DBG_PROBE, "model out of bounds %d",model); 1754 return -ENODEV; 1755 } 1756 printk(KERN_INFO "%s: %s found\n", __FUNCTION__, 1757 usbvision_device_data[model].ModelString); 1758 1759 if (usbvision_device_data[model].Interface >= 0) { 1760 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0]; 1761 } else { 1762 interface = &dev->actconfig->interface[ifnum]->altsetting[0]; 1763 } 1764 endpoint = &interface->endpoint[1].desc; 1765 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != 1766 USB_ENDPOINT_XFER_ISOC) { 1767 err("%s: interface %d. has non-ISO endpoint!", 1768 __FUNCTION__, ifnum); 1769 err("%s: Endpoint attributes %d", 1770 __FUNCTION__, endpoint->bmAttributes); 1771 return -ENODEV; 1772 } 1773 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == 1774 USB_DIR_OUT) { 1775 err("%s: interface %d. has ISO OUT endpoint!", 1776 __FUNCTION__, ifnum); 1777 return -ENODEV; 1778 } 1779 1780 if ((usbvision = usbvision_alloc(dev)) == NULL) { 1781 err("%s: couldn't allocate USBVision struct", __FUNCTION__); 1782 return -ENOMEM; 1783 } 1784 1785 if (dev->descriptor.bNumConfigurations > 1) { 1786 usbvision->bridgeType = BRIDGE_NT1004; 1787 } else if (model == DAZZLE_DVC_90_REV_1_SECAM) { 1788 usbvision->bridgeType = BRIDGE_NT1005; 1789 } else { 1790 usbvision->bridgeType = BRIDGE_NT1003; 1791 } 1792 PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType); 1793 1794 down(&usbvision->lock); 1795 1796 /* compute alternate max packet sizes */ 1797 uif = dev->actconfig->interface[0]; 1798 1799 usbvision->num_alt=uif->num_altsetting; 1800 PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt); 1801 usbvision->alt_max_pkt_size = kmalloc(32* 1802 usbvision->num_alt,GFP_KERNEL); 1803 if (usbvision->alt_max_pkt_size == NULL) { 1804 err("usbvision: out of memory!\n"); 1805 return -ENOMEM; 1806 } 1807 1808 for (i = 0; i < usbvision->num_alt ; i++) { 1809 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. 1810 wMaxPacketSize); 1811 usbvision->alt_max_pkt_size[i] = 1812 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); 1813 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i, 1814 usbvision->alt_max_pkt_size[i]); 1815 } 1816 1817 1818 usbvision->nr = usbvision_nr++; 1819 1820 usbvision->have_tuner = usbvision_device_data[model].Tuner; 1821 if (usbvision->have_tuner) { 1822 usbvision->tuner_type = usbvision_device_data[model].TunerType; 1823 } 1824 1825 usbvision->tuner_addr = ADDR_UNSET; 1826 1827 usbvision->DevModel = model; 1828 usbvision->remove_pending = 0; 1829 usbvision->iface = ifnum; 1830 usbvision->ifaceAlt = 0; 1831 usbvision->video_endp = endpoint->bEndpointAddress; 1832 usbvision->isocPacketSize = 0; 1833 usbvision->usb_bandwidth = 0; 1834 usbvision->user = 0; 1835 usbvision->streaming = Stream_Off; 1836 usbvision_register_video(usbvision); 1837 usbvision_configure_video(usbvision); 1838 up(&usbvision->lock); 1839 1840 1841 usb_set_intfdata (intf, usbvision); 1842 usbvision_create_sysfs(usbvision->vdev); 1843 1844 PDEBUG(DBG_PROBE, "success"); 1845 return 0; 1846} 1847 1848 1849/* 1850 * usbvision_disconnect() 1851 * 1852 * This procedure stops all driver activity, deallocates interface-private 1853 * structure (pointed by 'ptr') and after that driver should be removable 1854 * with no ill consequences. 1855 * 1856 */ 1857static void __devexit usbvision_disconnect(struct usb_interface *intf) 1858{ 1859 struct usb_usbvision *usbvision = usb_get_intfdata(intf); 1860 1861 PDEBUG(DBG_PROBE, ""); 1862 1863 if (usbvision == NULL) { 1864 err("%s: usb_get_intfdata() failed", __FUNCTION__); 1865 return; 1866 } 1867 usb_set_intfdata (intf, NULL); 1868 1869 down(&usbvision->lock); 1870 1871 // At this time we ask to cancel outstanding URBs 1872 usbvision_stop_isoc(usbvision); 1873 1874 if (usbvision->power) { 1875 usbvision_i2c_unregister(usbvision); 1876 usbvision_power_off(usbvision); 1877 } 1878 usbvision->remove_pending = 1; // Now all ISO data will be ignored 1879 1880 usb_put_dev(usbvision->dev); 1881 usbvision->dev = NULL; // USB device is no more 1882 1883 up(&usbvision->lock); 1884 1885 if (usbvision->user) { 1886 printk(KERN_INFO "%s: In use, disconnect pending\n", 1887 __FUNCTION__); 1888 wake_up_interruptible(&usbvision->wait_frame); 1889 wake_up_interruptible(&usbvision->wait_stream); 1890 } else { 1891 usbvision_release(usbvision); 1892 } 1893 1894 PDEBUG(DBG_PROBE, "success"); 1895 1896} 1897 1898static struct usb_driver usbvision_driver = { 1899 .name = "usbvision", 1900 .id_table = usbvision_table, 1901 .probe = usbvision_probe, 1902 .disconnect = usbvision_disconnect 1903}; 1904 1905/* 1906 * usbvision_init() 1907 * 1908 * This code is run to initialize the driver. 1909 * 1910 */ 1911static int __init usbvision_init(void) 1912{ 1913 int errCode; 1914 1915 PDEBUG(DBG_PROBE, ""); 1916 1917 PDEBUG(DBG_IO, "IO debugging is enabled [video]"); 1918 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]"); 1919 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]"); 1920 1921 /* disable planar mode support unless compression enabled */ 1922 if (isocMode != ISOC_MODE_COMPRESS ) { 1923 // FIXME : not the right way to set supported flag 1924 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420 1925 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P 1926 } 1927 1928 errCode = usb_register(&usbvision_driver); 1929 1930 if (errCode == 0) { 1931 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n"); 1932 PDEBUG(DBG_PROBE, "success"); 1933 } 1934 return errCode; 1935} 1936 1937static void __exit usbvision_exit(void) 1938{ 1939 PDEBUG(DBG_PROBE, ""); 1940 1941 usb_deregister(&usbvision_driver); 1942 PDEBUG(DBG_PROBE, "success"); 1943} 1944 1945module_init(usbvision_init); 1946module_exit(usbvision_exit); 1947 1948/* 1949 * Overrides for Emacs so that we follow Linus's tabbing style. 1950 * --------------------------------------------------------------------------- 1951 * Local variables: 1952 * c-basic-offset: 8 1953 * End: 1954 */ 1955