drivers/media/video/usbvision/usbvision-video.c

   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,\
  91 USBVISION_DRIVER_VERSION_MINOR,\
  92 USBVISION_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 */
 119 static int usbvision_nr = 0;
 120
 121 static 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 */
 133 static void usbvision_release(struct usb_usbvision *usbvision);
 134
 135 /* Default initalization of device driver parameters */
 136 /* Set the default format for ISOC endpoint */
 137 static int isocMode = ISOC_MODE_COMPRESS;
 138 /* Set the default Debug Mode of the device driver */
 139 static int video_debug = 0;
 140 /* Set the default device to power on at startup */
 141 static int PowerOnAtOpen = 1;
 142 /* Sequential Number of Video Device */
 143 static int video_nr = -1;
 144 /* Sequential Number of Radio Device */
 145 static int radio_nr = -1;
 146 /* Sequential Number of VBI Device */
 147 static int vbi_nr = -1;
 148
 149 /* Grab parameters for the device driver */
 150
 151 /* Showing parameters under SYSFS */
 152 module_param(isocMode, int, 0444);
 153 module_param(video_debug, int, 0444);
 154 module_param(PowerOnAtOpen, int, 0444);
 155 module_param(video_nr, int, 0444);
 156 module_param(radio_nr, int, 0444);
 157 module_param(vbi_nr, int, 0444);
 158
 159 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 160 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 161 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 162 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 164 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 165
 166
 167 // Misc stuff
 168 MODULE_AUTHOR(DRIVER_AUTHOR);
 169 MODULE_DESCRIPTION(DRIVER_DESC);
 170 MODULE_LICENSE(DRIVER_LICENSE);
 171 MODULE_VERSION(USBVISION_VERSION_STRING);
 172 MODULE_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
 186 static 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
 193 static ssize_t show_version(struct class_device *cd, char *buf)
 194 {
 195         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 196 }
 197 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 198
 199 static 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 }
 207 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 208
 209 static 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 }
 221 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 222
 223 static 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 }
 235 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 236
 237 static 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 }
 249 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 250
 251 static 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 }
 263 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 264
 265 static 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 }
 273 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 274
 275 static 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 }
 283 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 284
 285 static 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 }
 292 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 293
 294 static 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
 341 static 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  */
 374 static 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  */
 455 static 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
 503 static 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
 524 static 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
 545 static 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
 567 static 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
 623 static 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
 633 static 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
 652 static 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
 669 static 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
 690 static 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
 706 static 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
 724 static 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
 741 static 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
 757 static 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
 767 static 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
 786 static 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
 797 static 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
 808 static 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
 838 static 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
 877 static 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
 916 static 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
 959 static 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
 972 static 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
 993 static 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
1007 static 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
1025 static 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
1055 static 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
1085 static 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
1193 static 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  */
1257 static 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
1307 static 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  */
1349 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1350 {
1351         /* TODO */
1352         return -ENODEV;
1353
1354 }
1355
1356 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1357 {
1358         /* TODO */
1359         return -ENODEV;
1360 }
1361
1362 static 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
1369 static 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
1381 static 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 };
1392 static 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
1437 static 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
1446 static 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
1474 static 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
1483 static 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
1495 static 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
1520 static 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
1560 static 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  */
1628 static 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
1653 err_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  */
1670 static 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
1697 static 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  */
1736 static 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  */
1857 static 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
1898 static 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  */
1911 static 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
1937 static void __exit usbvision_exit(void)
1938 {
1939  PDEBUG(DBG_PROBE, "");
1940
1941  usb_deregister(&usbvision_driver);
1942  PDEBUG(DBG_PROBE, "success");
1943 }
1944
1945 module_init(usbvision_init);
1946 module_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  */