usbvision-video.c revision 66a17879e9f18a38c4ca5e6ba600a3f5b1b51188
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 return 0; 521} 522 523static int vidioc_s_register (struct file *file, void *priv, 524 struct v4l2_register *reg) 525{ 526 struct video_device *dev = video_devdata(file); 527 struct usb_usbvision *usbvision = 528 (struct usb_usbvision *) video_get_drvdata(dev); 529 int errCode; 530 531 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) 532 return -EINVAL; 533 /* NT100x has a 8-bit register space */ 534 reg->val = (u8)usbvision_write_reg(usbvision, reg->reg&0xff, reg->val); 535 if (reg->val < 0) { 536 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d", 537 __FUNCTION__, errCode); 538 return errCode; 539 } 540 return 0; 541} 542#endif 543 544static int vidioc_querycap (struct file *file, void *priv, 545 struct v4l2_capability *vc) 546{ 547 struct video_device *dev = video_devdata(file); 548 struct usb_usbvision *usbvision = 549 (struct usb_usbvision *) video_get_drvdata(dev); 550 551 strlcpy(vc->driver, "USBVision", sizeof(vc->driver)); 552 strlcpy(vc->card, 553 usbvision_device_data[usbvision->DevModel].ModelString, 554 sizeof(vc->card)); 555 strlcpy(vc->bus_info, usbvision->dev->dev.bus_id, 556 sizeof(vc->bus_info)); 557 vc->version = USBVISION_DRIVER_VERSION; 558 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | 559 V4L2_CAP_AUDIO | 560 V4L2_CAP_READWRITE | 561 V4L2_CAP_STREAMING | 562 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0); 563 return 0; 564} 565 566static int vidioc_enum_input (struct file *file, void *priv, 567 struct v4l2_input *vi) 568{ 569 struct video_device *dev = video_devdata(file); 570 struct usb_usbvision *usbvision = 571 (struct usb_usbvision *) video_get_drvdata(dev); 572 int chan; 573 574 if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) ) 575 return -EINVAL; 576 if (usbvision->have_tuner) { 577 chan = vi->index; 578 } else { 579 chan = vi->index + 1; /*skip Television string*/ 580 } 581 /* Determine the requested input characteristics 582 specific for each usbvision card model */ 583 switch(chan) { 584 case 0: 585 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 586 strcpy(vi->name, "White Video Input"); 587 } else { 588 strcpy(vi->name, "Television"); 589 vi->type = V4L2_INPUT_TYPE_TUNER; 590 vi->audioset = 1; 591 vi->tuner = chan; 592 vi->std = USBVISION_NORMS; 593 } 594 break; 595 case 1: 596 vi->type = V4L2_INPUT_TYPE_CAMERA; 597 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 598 strcpy(vi->name, "Green Video Input"); 599 } else { 600 strcpy(vi->name, "Composite Video Input"); 601 } 602 vi->std = V4L2_STD_PAL; 603 break; 604 case 2: 605 vi->type = V4L2_INPUT_TYPE_CAMERA; 606 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) { 607 strcpy(vi->name, "Yellow Video Input"); 608 } else { 609 strcpy(vi->name, "S-Video Input"); 610 } 611 vi->std = V4L2_STD_PAL; 612 break; 613 case 3: 614 vi->type = V4L2_INPUT_TYPE_CAMERA; 615 strcpy(vi->name, "Red Video Input"); 616 vi->std = V4L2_STD_PAL; 617 break; 618 } 619 return 0; 620} 621 622static int vidioc_g_input (struct file *file, void *priv, unsigned int *input) 623{ 624 struct video_device *dev = video_devdata(file); 625 struct usb_usbvision *usbvision = 626 (struct usb_usbvision *) video_get_drvdata(dev); 627 628 *input = usbvision->ctl_input; 629 return 0; 630} 631 632static int vidioc_s_input (struct file *file, void *priv, unsigned int input) 633{ 634 struct video_device *dev = video_devdata(file); 635 struct usb_usbvision *usbvision = 636 (struct usb_usbvision *) video_get_drvdata(dev); 637 638 if ((input >= usbvision->video_inputs) || (input < 0) ) 639 return -EINVAL; 640 641 down(&usbvision->lock); 642 usbvision_muxsel(usbvision, input); 643 usbvision_set_input(usbvision); 644 usbvision_set_output(usbvision, 645 usbvision->curwidth, 646 usbvision->curheight); 647 up(&usbvision->lock); 648 return 0; 649} 650 651static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id) 652{ 653 struct video_device *dev = video_devdata(file); 654 struct usb_usbvision *usbvision = 655 (struct usb_usbvision *) video_get_drvdata(dev); 656 usbvision->tvnormId=*id; 657 658 down(&usbvision->lock); 659 call_i2c_clients(usbvision, VIDIOC_S_STD, 660 &usbvision->tvnormId); 661 up(&usbvision->lock); 662 /* propagate the change to the decoder */ 663 usbvision_muxsel(usbvision, usbvision->ctl_input); 664 665 return 0; 666} 667 668static int vidioc_g_tuner (struct file *file, void *priv, 669 struct v4l2_tuner *vt) 670{ 671 struct video_device *dev = video_devdata(file); 672 struct usb_usbvision *usbvision = 673 (struct usb_usbvision *) video_get_drvdata(dev); 674 675 if (!usbvision->have_tuner || vt->index) // Only tuner 0 676 return -EINVAL; 677 if(usbvision->radio) { 678 strcpy(vt->name, "Radio"); 679 vt->type = V4L2_TUNER_RADIO; 680 } else { 681 strcpy(vt->name, "Television"); 682 } 683 /* Let clients fill in the remainder of this struct */ 684 call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt); 685 686 return 0; 687} 688 689static int vidioc_s_tuner (struct file *file, void *priv, 690 struct v4l2_tuner *vt) 691{ 692 struct video_device *dev = video_devdata(file); 693 struct usb_usbvision *usbvision = 694 (struct usb_usbvision *) video_get_drvdata(dev); 695 696 // Only no or one tuner for now 697 if (!usbvision->have_tuner || vt->index) 698 return -EINVAL; 699 /* let clients handle this */ 700 call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt); 701 702 return 0; 703} 704 705static int vidioc_g_frequency (struct file *file, void *priv, 706 struct v4l2_frequency *freq) 707{ 708 struct video_device *dev = video_devdata(file); 709 struct usb_usbvision *usbvision = 710 (struct usb_usbvision *) video_get_drvdata(dev); 711 712 freq->tuner = 0; // Only one tuner 713 if(usbvision->radio) { 714 freq->type = V4L2_TUNER_RADIO; 715 } else { 716 freq->type = V4L2_TUNER_ANALOG_TV; 717 } 718 freq->frequency = usbvision->freq; 719 720 return 0; 721} 722 723static int vidioc_s_frequency (struct file *file, void *priv, 724 struct v4l2_frequency *freq) 725{ 726 struct video_device *dev = video_devdata(file); 727 struct usb_usbvision *usbvision = 728 (struct usb_usbvision *) video_get_drvdata(dev); 729 730 // Only no or one tuner for now 731 if (!usbvision->have_tuner || freq->tuner) 732 return -EINVAL; 733 734 usbvision->freq = freq->frequency; 735 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq); 736 737 return 0; 738} 739 740static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a) 741{ 742 struct video_device *dev = video_devdata(file); 743 struct usb_usbvision *usbvision = 744 (struct usb_usbvision *) video_get_drvdata(dev); 745 746 memset(a,0,sizeof(*a)); 747 if(usbvision->radio) { 748 strcpy(a->name,"Radio"); 749 } else { 750 strcpy(a->name, "TV"); 751 } 752 753 return 0; 754} 755 756static int vidioc_s_audio (struct file *file, void *fh, 757 struct v4l2_audio *a) 758{ 759 if(a->index) { 760 return -EINVAL; 761 } 762 763 return 0; 764} 765 766static int vidioc_queryctrl (struct file *file, void *priv, 767 struct v4l2_queryctrl *ctrl) 768{ 769 struct video_device *dev = video_devdata(file); 770 struct usb_usbvision *usbvision = 771 (struct usb_usbvision *) video_get_drvdata(dev); 772 int id=ctrl->id; 773 774 memset(ctrl,0,sizeof(*ctrl)); 775 ctrl->id=id; 776 777 call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl); 778 779 if (!ctrl->type) 780 return -EINVAL; 781 782 return 0; 783} 784 785static int vidioc_g_ctrl (struct file *file, void *priv, 786 struct v4l2_control *ctrl) 787{ 788 struct video_device *dev = video_devdata(file); 789 struct usb_usbvision *usbvision = 790 (struct usb_usbvision *) video_get_drvdata(dev); 791 call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl); 792 793 return 0; 794} 795 796static int vidioc_s_ctrl (struct file *file, void *priv, 797 struct v4l2_control *ctrl) 798{ 799 struct video_device *dev = video_devdata(file); 800 struct usb_usbvision *usbvision = 801 (struct usb_usbvision *) video_get_drvdata(dev); 802 call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl); 803 804 return 0; 805} 806 807static int vidioc_reqbufs (struct file *file, 808 void *priv, struct v4l2_requestbuffers *vr) 809{ 810 struct video_device *dev = video_devdata(file); 811 struct usb_usbvision *usbvision = 812 (struct usb_usbvision *) video_get_drvdata(dev); 813 int ret; 814 815 RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES); 816 817 /* Check input validity: 818 the user must do a VIDEO CAPTURE and MMAP method. */ 819 if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) || 820 (vr->memory != V4L2_MEMORY_MMAP)) 821 return -EINVAL; 822 823 if(usbvision->streaming == Stream_On) { 824 if ((ret = usbvision_stream_interrupt(usbvision))) 825 return ret; 826 } 827 828 usbvision_frames_free(usbvision); 829 usbvision_empty_framequeues(usbvision); 830 vr->count = usbvision_frames_alloc(usbvision,vr->count); 831 832 usbvision->curFrame = NULL; 833 834 return 0; 835} 836 837static int vidioc_querybuf (struct file *file, 838 void *priv, struct v4l2_buffer *vb) 839{ 840 struct video_device *dev = video_devdata(file); 841 struct usb_usbvision *usbvision = 842 (struct usb_usbvision *) video_get_drvdata(dev); 843 struct usbvision_frame *frame; 844 845 /* FIXME : must control 846 that buffers are mapped (VIDIOC_REQBUFS has been called) */ 847 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) { 848 return -EINVAL; 849 } 850 if(vb->index>=usbvision->num_frames) { 851 return -EINVAL; 852 } 853 /* Updating the corresponding frame state */ 854 vb->flags = 0; 855 frame = &usbvision->frame[vb->index]; 856 if(frame->grabstate >= FrameState_Ready) 857 vb->flags |= V4L2_BUF_FLAG_QUEUED; 858 if(frame->grabstate >= FrameState_Done) 859 vb->flags |= V4L2_BUF_FLAG_DONE; 860 if(frame->grabstate == FrameState_Unused) 861 vb->flags |= V4L2_BUF_FLAG_MAPPED; 862 vb->memory = V4L2_MEMORY_MMAP; 863 864 vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size); 865 866 vb->memory = V4L2_MEMORY_MMAP; 867 vb->field = V4L2_FIELD_NONE; 868 vb->length = usbvision->curwidth* 869 usbvision->curheight* 870 usbvision->palette.bytes_per_pixel; 871 vb->timestamp = usbvision->frame[vb->index].timestamp; 872 vb->sequence = usbvision->frame[vb->index].sequence; 873 return 0; 874} 875 876static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb) 877{ 878 struct video_device *dev = video_devdata(file); 879 struct usb_usbvision *usbvision = 880 (struct usb_usbvision *) video_get_drvdata(dev); 881 struct usbvision_frame *frame; 882 unsigned long lock_flags; 883 884 /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */ 885 if(vb->type != V4L2_CAP_VIDEO_CAPTURE) { 886 return -EINVAL; 887 } 888 if(vb->index>=usbvision->num_frames) { 889 return -EINVAL; 890 } 891 892 frame = &usbvision->frame[vb->index]; 893 894 if (frame->grabstate != FrameState_Unused) { 895 return -EAGAIN; 896 } 897 898 /* Mark it as ready and enqueue frame */ 899 frame->grabstate = FrameState_Ready; 900 frame->scanstate = ScanState_Scanning; 901 frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */ 902 903 vb->flags &= ~V4L2_BUF_FLAG_DONE; 904 905 /* set v4l2_format index */ 906 frame->v4l2_format = usbvision->palette; 907 908 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 909 list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue); 910 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 911 912 return 0; 913} 914 915static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb) 916{ 917 struct video_device *dev = video_devdata(file); 918 struct usb_usbvision *usbvision = 919 (struct usb_usbvision *) video_get_drvdata(dev); 920 int ret; 921 struct usbvision_frame *f; 922 unsigned long lock_flags; 923 924 if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 925 return -EINVAL; 926 927 if (list_empty(&(usbvision->outqueue))) { 928 if (usbvision->streaming == Stream_Idle) 929 return -EINVAL; 930 ret = wait_event_interruptible 931 (usbvision->wait_frame, 932 !list_empty(&(usbvision->outqueue))); 933 if (ret) 934 return ret; 935 } 936 937 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 938 f = list_entry(usbvision->outqueue.next, 939 struct usbvision_frame, frame); 940 list_del(usbvision->outqueue.next); 941 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 942 943 f->grabstate = FrameState_Unused; 944 945 vb->memory = V4L2_MEMORY_MMAP; 946 vb->flags = V4L2_BUF_FLAG_MAPPED | 947 V4L2_BUF_FLAG_QUEUED | 948 V4L2_BUF_FLAG_DONE; 949 vb->index = f->index; 950 vb->sequence = f->sequence; 951 vb->timestamp = f->timestamp; 952 vb->field = V4L2_FIELD_NONE; 953 vb->bytesused = f->scanlength; 954 955 return 0; 956} 957 958static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) 959{ 960 struct video_device *dev = video_devdata(file); 961 struct usb_usbvision *usbvision = 962 (struct usb_usbvision *) video_get_drvdata(dev); 963 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE; 964 965 usbvision->streaming = Stream_On; 966 call_i2c_clients(usbvision,VIDIOC_STREAMON , &b); 967 968 return 0; 969} 970 971static int vidioc_streamoff(struct file *file, 972 void *priv, enum v4l2_buf_type type) 973{ 974 struct video_device *dev = video_devdata(file); 975 struct usb_usbvision *usbvision = 976 (struct usb_usbvision *) video_get_drvdata(dev); 977 int b=V4L2_BUF_TYPE_VIDEO_CAPTURE; 978 979 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 980 return -EINVAL; 981 982 if(usbvision->streaming == Stream_On) { 983 usbvision_stream_interrupt(usbvision); 984 /* Stop all video streamings */ 985 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b); 986 } 987 usbvision_empty_framequeues(usbvision); 988 989 return 0; 990} 991 992static int vidioc_enum_fmt_cap (struct file *file, void *priv, 993 struct v4l2_fmtdesc *vfd) 994{ 995 if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) { 996 return -EINVAL; 997 } 998 vfd->flags = 0; 999 vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 1000 strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc); 1001 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format; 1002 memset(vfd->reserved, 0, sizeof(vfd->reserved)); 1003 return 0; 1004} 1005 1006static int vidioc_g_fmt_cap (struct file *file, void *priv, 1007 struct v4l2_format *vf) 1008{ 1009 struct video_device *dev = video_devdata(file); 1010 struct usb_usbvision *usbvision = 1011 (struct usb_usbvision *) video_get_drvdata(dev); 1012 vf->fmt.pix.width = usbvision->curwidth; 1013 vf->fmt.pix.height = usbvision->curheight; 1014 vf->fmt.pix.pixelformat = usbvision->palette.format; 1015 vf->fmt.pix.bytesperline = 1016 usbvision->curwidth*usbvision->palette.bytes_per_pixel; 1017 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight; 1018 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 1019 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ 1020 1021 return 0; 1022} 1023 1024static int vidioc_try_fmt_cap (struct file *file, void *priv, 1025 struct v4l2_format *vf) 1026{ 1027 struct video_device *dev = video_devdata(file); 1028 struct usb_usbvision *usbvision = 1029 (struct usb_usbvision *) video_get_drvdata(dev); 1030 int formatIdx; 1031 1032 /* Find requested format in available ones */ 1033 for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) { 1034 if(vf->fmt.pix.pixelformat == 1035 usbvision_v4l2_format[formatIdx].format) { 1036 usbvision->palette = usbvision_v4l2_format[formatIdx]; 1037 break; 1038 } 1039 } 1040 /* robustness */ 1041 if(formatIdx == USBVISION_SUPPORTED_PALETTES) { 1042 return -EINVAL; 1043 } 1044 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH); 1045 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT); 1046 1047 vf->fmt.pix.bytesperline = vf->fmt.pix.width* 1048 usbvision->palette.bytes_per_pixel; 1049 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height; 1050 1051 return 0; 1052} 1053 1054static int vidioc_s_fmt_cap(struct file *file, void *priv, 1055 struct v4l2_format *vf) 1056{ 1057 struct video_device *dev = video_devdata(file); 1058 struct usb_usbvision *usbvision = 1059 (struct usb_usbvision *) video_get_drvdata(dev); 1060 int ret; 1061 1062 if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) { 1063 return ret; 1064 } 1065 1066 /* stop io in case it is already in progress */ 1067 if(usbvision->streaming == Stream_On) { 1068 if ((ret = usbvision_stream_interrupt(usbvision))) 1069 return ret; 1070 } 1071 usbvision_frames_free(usbvision); 1072 usbvision_empty_framequeues(usbvision); 1073 1074 usbvision->curFrame = NULL; 1075 1076 /* by now we are committed to the new data... */ 1077 down(&usbvision->lock); 1078 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); 1079 up(&usbvision->lock); 1080 1081 return 0; 1082} 1083 1084static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf, 1085 size_t count, loff_t *ppos) 1086{ 1087 struct video_device *dev = video_devdata(file); 1088 struct usb_usbvision *usbvision = 1089 (struct usb_usbvision *) video_get_drvdata(dev); 1090 int noblock = file->f_flags & O_NONBLOCK; 1091 unsigned long lock_flags; 1092 1093 int ret,i; 1094 struct usbvision_frame *frame; 1095 1096 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, 1097 (unsigned long)count, noblock); 1098 1099 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL)) 1100 return -EFAULT; 1101 1102 /* This entry point is compatible with the mmap routines 1103 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF 1104 to get frames or call read on the device. */ 1105 if(!usbvision->num_frames) { 1106 /* First, allocate some frames to work with 1107 if this has not been done with VIDIOC_REQBUF */ 1108 usbvision_frames_free(usbvision); 1109 usbvision_empty_framequeues(usbvision); 1110 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES); 1111 } 1112 1113 if(usbvision->streaming != Stream_On) { 1114 /* no stream is running, make it running ! */ 1115 usbvision->streaming = Stream_On; 1116 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL); 1117 } 1118 1119 /* Then, enqueue as many frames as possible 1120 (like a user of VIDIOC_QBUF would do) */ 1121 for(i=0;i<usbvision->num_frames;i++) { 1122 frame = &usbvision->frame[i]; 1123 if(frame->grabstate == FrameState_Unused) { 1124 /* Mark it as ready and enqueue frame */ 1125 frame->grabstate = FrameState_Ready; 1126 frame->scanstate = ScanState_Scanning; 1127 /* Accumulated in usbvision_parse_data() */ 1128 frame->scanlength = 0; 1129 1130 /* set v4l2_format index */ 1131 frame->v4l2_format = usbvision->palette; 1132 1133 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1134 list_add_tail(&frame->frame, &usbvision->inqueue); 1135 spin_unlock_irqrestore(&usbvision->queue_lock, 1136 lock_flags); 1137 } 1138 } 1139 1140 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */ 1141 if (list_empty(&(usbvision->outqueue))) { 1142 if(noblock) 1143 return -EAGAIN; 1144 1145 ret = wait_event_interruptible 1146 (usbvision->wait_frame, 1147 !list_empty(&(usbvision->outqueue))); 1148 if (ret) 1149 return ret; 1150 } 1151 1152 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1153 frame = list_entry(usbvision->outqueue.next, 1154 struct usbvision_frame, frame); 1155 list_del(usbvision->outqueue.next); 1156 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 1157 1158 /* An error returns an empty frame */ 1159 if (frame->grabstate == FrameState_Error) { 1160 frame->bytes_read = 0; 1161 return 0; 1162 } 1163 1164 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", 1165 __FUNCTION__, 1166 frame->index, frame->bytes_read, frame->scanlength); 1167 1168 /* copy bytes to user space; we allow for partials reads */ 1169 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength) 1170 count = frame->scanlength - frame->bytes_read; 1171 1172 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) { 1173 return -EFAULT; 1174 } 1175 1176 frame->bytes_read += count; 1177 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", 1178 __FUNCTION__, 1179 (unsigned long)count, frame->bytes_read); 1180 1181 /* For now, forget the frame if it has not been read in one shot. */ 1182/* if (frame->bytes_read >= frame->scanlength) {// All data has been read */ 1183 frame->bytes_read = 0; 1184 1185 /* Mark it as available to be used again. */ 1186 frame->grabstate = FrameState_Unused; 1187/* } */ 1188 1189 return count; 1190} 1191 1192static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) 1193{ 1194 unsigned long size = vma->vm_end - vma->vm_start, 1195 start = vma->vm_start; 1196 void *pos; 1197 u32 i; 1198 1199 struct video_device *dev = video_devdata(file); 1200 struct usb_usbvision *usbvision = 1201 (struct usb_usbvision *) video_get_drvdata(dev); 1202 1203 PDEBUG(DBG_MMAP, "mmap"); 1204 1205 down(&usbvision->lock); 1206 1207 if (!USBVISION_IS_OPERATIONAL(usbvision)) { 1208 up(&usbvision->lock); 1209 return -EFAULT; 1210 } 1211 1212 if (!(vma->vm_flags & VM_WRITE) || 1213 size != PAGE_ALIGN(usbvision->max_frame_size)) { 1214 up(&usbvision->lock); 1215 return -EINVAL; 1216 } 1217 1218 for (i = 0; i < usbvision->num_frames; i++) { 1219 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == 1220 vma->vm_pgoff) 1221 break; 1222 } 1223 if (i == usbvision->num_frames) { 1224 PDEBUG(DBG_MMAP, 1225 "mmap: user supplied mapping address is out of range"); 1226 up(&usbvision->lock); 1227 return -EINVAL; 1228 } 1229 1230 /* VM_IO is eventually going to replace PageReserved altogether */ 1231 vma->vm_flags |= VM_IO; 1232 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ 1233 1234 pos = usbvision->frame[i].data; 1235 while (size > 0) { 1236 1237 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { 1238 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); 1239 up(&usbvision->lock); 1240 return -EAGAIN; 1241 } 1242 start += PAGE_SIZE; 1243 pos += PAGE_SIZE; 1244 size -= PAGE_SIZE; 1245 } 1246 1247 up(&usbvision->lock); 1248 return 0; 1249} 1250 1251 1252/* 1253 * Here comes the stuff for radio on usbvision based devices 1254 * 1255 */ 1256static int usbvision_radio_open(struct inode *inode, struct file *file) 1257{ 1258 struct video_device *dev = video_devdata(file); 1259 struct usb_usbvision *usbvision = 1260 (struct usb_usbvision *) video_get_drvdata(dev); 1261 int errCode = 0; 1262 1263 PDEBUG(DBG_IO, "%s:", __FUNCTION__); 1264 1265 down(&usbvision->lock); 1266 1267 if (usbvision->user) { 1268 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__); 1269 errCode = -EBUSY; 1270 } 1271 else { 1272 if(PowerOnAtOpen) { 1273 usbvision_reset_powerOffTimer(usbvision); 1274 if (usbvision->power == 0) { 1275 usbvision_power_on(usbvision); 1276 usbvision_i2c_register(usbvision); 1277 } 1278 } 1279 1280 /* Alternate interface 1 is is the biggest frame size */ 1281 errCode = usbvision_set_alternate(usbvision); 1282 if (errCode < 0) { 1283 usbvision->last_error = errCode; 1284 return -EBUSY; 1285 } 1286 1287 // If so far no errors then we shall start the radio 1288 usbvision->radio = 1; 1289 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type); 1290 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); 1291 usbvision->user++; 1292 } 1293 1294 if (errCode) { 1295 if (PowerOnAtOpen) { 1296 usbvision_i2c_unregister(usbvision); 1297 usbvision_power_off(usbvision); 1298 usbvision->initialized = 0; 1299 } 1300 } 1301 up(&usbvision->lock); 1302 return errCode; 1303} 1304 1305 1306static int usbvision_radio_close(struct inode *inode, struct file *file) 1307{ 1308 struct video_device *dev = video_devdata(file); 1309 struct usb_usbvision *usbvision = 1310 (struct usb_usbvision *) video_get_drvdata(dev); 1311 int errCode = 0; 1312 1313 PDEBUG(DBG_IO, ""); 1314 1315 down(&usbvision->lock); 1316 1317 /* Set packet size to 0 */ 1318 usbvision->ifaceAlt=0; 1319 errCode = usb_set_interface(usbvision->dev, usbvision->iface, 1320 usbvision->ifaceAlt); 1321 1322 usbvision_audio_off(usbvision); 1323 usbvision->radio=0; 1324 usbvision->user--; 1325 1326 if (PowerOnAtOpen) { 1327 usbvision_set_powerOffTimer(usbvision); 1328 usbvision->initialized = 0; 1329 } 1330 1331 up(&usbvision->lock); 1332 1333 if (usbvision->remove_pending) { 1334 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__); 1335 usbvision_release(usbvision); 1336 } 1337 1338 1339 PDEBUG(DBG_IO, "success"); 1340 1341 return errCode; 1342} 1343 1344/* 1345 * Here comes the stuff for vbi on usbvision based devices 1346 * 1347 */ 1348static int usbvision_vbi_open(struct inode *inode, struct file *file) 1349{ 1350 /* TODO */ 1351 return -ENODEV; 1352 1353} 1354 1355static int usbvision_vbi_close(struct inode *inode, struct file *file) 1356{ 1357 /* TODO */ 1358 return -ENODEV; 1359} 1360 1361static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file, 1362 unsigned int cmd, void *arg) 1363{ 1364 /* TODO */ 1365 return -ENOIOCTLCMD; 1366} 1367 1368static int usbvision_vbi_ioctl(struct inode *inode, struct file *file, 1369 unsigned int cmd, unsigned long arg) 1370{ 1371 return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl); 1372} 1373 1374 1375// 1376// Video registration stuff 1377// 1378 1379// Video template 1380static const struct file_operations usbvision_fops = { 1381 .owner = THIS_MODULE, 1382 .open = usbvision_v4l2_open, 1383 .release = usbvision_v4l2_close, 1384 .read = usbvision_v4l2_read, 1385 .mmap = usbvision_v4l2_mmap, 1386 .ioctl = video_ioctl2, 1387 .llseek = no_llseek, 1388/* .poll = video_poll, */ 1389 .mmap = usbvision_v4l2_mmap, 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_g_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_g_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