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.  Seems impossible, needs a codec interface.  Which one?
  40  *     - Clean up the driver.
  41  *     - optimization for performance.
  42  *     - Add Videotext capability (VBI).  Working on it.....
  43  *     - Check audio for other devices
  44  *
  45  */
  46
  47 #include <linux/version.h>
  48 #include <linux/kernel.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/utsname.h>
  54 #include <linux/highmem.h>
  55 #include <linux/videodev.h>
  56 #include <linux/vmalloc.h>
  57 #include <linux/module.h>
  58 #include <linux/init.h>
  59 #include <linux/spinlock.h>
  60 #include <asm/io.h>
  61 #include <linux/videodev2.h>
  62 #include <linux/video_decoder.h>
  63 #include <linux/i2c.h>
  64
  65 #include <media/saa7115.h>
  66 #include <media/v4l2-common.h>
  67 #include <media/tuner.h>
  68 #include <media/audiochip.h>
  69
  70 #include <linux/moduleparam.h>
  71 #include <linux/workqueue.h>
  72
  73 #ifdef CONFIG_KMOD
  74 #include <linux/kmod.h>
  75 #endif
  76
  77 #include "usbvision.h"
  78 #include "usbvision-cards.h"
  79
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
  81 #define DRIVER_NAME "usbvision"
  82 #define DRIVER_ALIAS "USBVision"
  83 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  84 #define DRIVER_LICENSE "GPL"
  85 #define USBVISION_DRIVER_VERSION_MAJOR 0
  86 #define USBVISION_DRIVER_VERSION_MINOR 9
  87 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  88 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
  89 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90
  91 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  92
  93
  94 #ifdef USBVISION_DEBUG
  95         #define PDEBUG(level, fmt, args...) \
  96                 if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
  97 #else
  98         #define PDEBUG(level, fmt, args...) do {} while(0)
  99 #endif
 100
 101 #define DBG_IOCTL       1<<0
 102 #define DBG_IO          1<<1
 103 #define DBG_PROBE       1<<2
 104 #define DBG_MMAP        1<<3
 105
 106 //String operations
 107 #define rmspace(str)    while(*str==' ') str++;
 108 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 109
 110
 111 static int usbvision_nr = 0;                    // sequential number of usbvision device
 112
 113 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 114         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 115         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 116         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 117         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 118         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 119         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 120         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 121         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 122 };
 123
 124 /* supported tv norms */
 125 static struct usbvision_tvnorm tvnorms[] = {
 126         {
 127                 .name = "PAL",
 128                 .id = V4L2_STD_PAL,
 129         }, {
 130                 .name = "NTSC",
 131                 .id = V4L2_STD_NTSC,
 132         }, {
 133                  .name = "SECAM",
 134                  .id = V4L2_STD_SECAM,
 135         }, {
 136                 .name = "PAL-M",
 137                 .id = V4L2_STD_PAL_M,
 138         }
 139 };
 140
 141 #define TVNORMS ARRAY_SIZE(tvnorms)
 142
 143 // Function prototypes
 144 static void usbvision_release(struct usb_usbvision *usbvision);
 145
 146 // Default initalization of device driver parameters
 147 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 148 static int video_debug = 0;                             // Set the default Debug Mode of the device driver
 149 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 150 static int video_nr = -1;                               // Sequential Number of Video Device
 151 static int radio_nr = -1;                               // Sequential Number of Radio Device
 152 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 153
 154 // Grab parameters for the device driver
 155
 156 #if defined(module_param)                               // Showing parameters under SYSFS
 157 module_param(isocMode, int, 0444);
 158 module_param(video_debug, int, 0444);
 159 module_param(PowerOnAtOpen, int, 0444);
 160 module_param(video_nr, int, 0444);
 161 module_param(radio_nr, int, 0444);
 162 module_param(vbi_nr, int, 0444);
 163 #else                                                   // Old Style
 164 MODULE_PARAM(isocMode, "i");
 165 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 166 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 167 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 168 MODULE_PARM(SwitchSVideoInput, "i");                    // To help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
 169 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 170 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 171 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 172 #endif
 173
 174 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 175 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 176 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 177 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 178 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 179 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 180
 181
 182 // Misc stuff
 183 MODULE_AUTHOR(DRIVER_AUTHOR);
 184 MODULE_DESCRIPTION(DRIVER_DESC);
 185 MODULE_LICENSE(DRIVER_LICENSE);
 186 MODULE_VERSION(USBVISION_VERSION_STRING);
 187 MODULE_ALIAS(DRIVER_ALIAS);
 188
 189
 190 /****************************************************************************************/
 191 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 192 /* Device information is located at /sys/class/video4linux/video0                       */
 193 /* Device parameters information is located at /sys/module/usbvision                    */
 194 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 195 /****************************************************************************************/
 196
 197
 198 #define YES_NO(x) ((x) ? "Yes" : "No")
 199
 200 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 201 {
 202         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 203         return video_get_drvdata(vdev);
 204 }
 205
 206 static ssize_t show_version(struct class_device *cd, char *buf)
 207 {
 208         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 209 }
 210 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 211
 212 static ssize_t show_model(struct class_device *cd, char *buf)
 213 {
 214         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 215         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 216         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 217 }
 218 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 219
 220 static ssize_t show_hue(struct class_device *cd, char *buf)
 221 {
 222         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 223         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 224         struct v4l2_control ctrl;
 225         ctrl.id = V4L2_CID_HUE;
 226         ctrl.value = 0;
 227         if(usbvision->user)
 228                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 229         return sprintf(buf, "%d\n", ctrl.value);
 230 }
 231 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 232
 233 static ssize_t show_contrast(struct class_device *cd, char *buf)
 234 {
 235         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 236         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 237         struct v4l2_control ctrl;
 238         ctrl.id = V4L2_CID_CONTRAST;
 239         ctrl.value = 0;
 240         if(usbvision->user)
 241                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 242         return sprintf(buf, "%d\n", ctrl.value);
 243 }
 244 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 245
 246 static ssize_t show_brightness(struct class_device *cd, char *buf)
 247 {
 248         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 249         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 250         struct v4l2_control ctrl;
 251         ctrl.id = V4L2_CID_BRIGHTNESS;
 252         ctrl.value = 0;
 253         if(usbvision->user)
 254                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 255         return sprintf(buf, "%d\n", ctrl.value);
 256 }
 257 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 258
 259 static ssize_t show_saturation(struct class_device *cd, char *buf)
 260 {
 261         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 262         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 263         struct v4l2_control ctrl;
 264         ctrl.id = V4L2_CID_SATURATION;
 265         ctrl.value = 0;
 266         if(usbvision->user)
 267                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 268         return sprintf(buf, "%d\n", ctrl.value);
 269 }
 270 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 271
 272 static ssize_t show_streaming(struct class_device *cd, char *buf)
 273 {
 274         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 275         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 276         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 277 }
 278 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 279
 280 static ssize_t show_compression(struct class_device *cd, char *buf)
 281 {
 282         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 283         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 284         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 285 }
 286 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 287
 288 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 289 {
 290         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 291         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 292         return sprintf(buf, "%d\n", usbvision->bridgeType);
 293 }
 294 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 295
 296 static void usbvision_create_sysfs(struct video_device *vdev)
 297 {
 298         int res;
 299         if (!vdev)
 300                 return;
 301         do {
 302                 res=class_device_create_file(&vdev->class_dev,
 303                                              &class_device_attr_version);
 304                 if (res<0)
 305                         break;
 306                 res=class_device_create_file(&vdev->class_dev,
 307                                              &class_device_attr_model);
 308                 if (res<0)
 309                         break;
 310                 res=class_device_create_file(&vdev->class_dev,
 311                                              &class_device_attr_hue);
 312                 if (res<0)
 313                         break;
 314                 res=class_device_create_file(&vdev->class_dev,
 315                                              &class_device_attr_contrast);
 316                 if (res<0)
 317                         break;
 318                 res=class_device_create_file(&vdev->class_dev,
 319                                              &class_device_attr_brightness);
 320                 if (res<0)
 321                         break;
 322                 res=class_device_create_file(&vdev->class_dev,
 323                                              &class_device_attr_saturation);
 324                 if (res<0)
 325                         break;
 326                 res=class_device_create_file(&vdev->class_dev,
 327                                              &class_device_attr_streaming);
 328                 if (res<0)
 329                         break;
 330                 res=class_device_create_file(&vdev->class_dev,
 331                                              &class_device_attr_compression);
 332                 if (res<0)
 333                         break;
 334                 res=class_device_create_file(&vdev->class_dev,
 335                                              &class_device_attr_bridge);
 336                 if (res>=0)
 337                         return;
 338         } while (0);
 339
 340         err("%s error: %d\n", __FUNCTION__, res);
 341 }
 342
 343 static void usbvision_remove_sysfs(struct video_device *vdev)
 344 {
 345         if (vdev) {
 346                 class_device_remove_file(&vdev->class_dev,
 347                                          &class_device_attr_version);
 348                 class_device_remove_file(&vdev->class_dev,
 349                                          &class_device_attr_model);
 350                 class_device_remove_file(&vdev->class_dev,
 351                                          &class_device_attr_hue);
 352                 class_device_remove_file(&vdev->class_dev,
 353                                          &class_device_attr_contrast);
 354                 class_device_remove_file(&vdev->class_dev,
 355                                          &class_device_attr_brightness);
 356                 class_device_remove_file(&vdev->class_dev,
 357                                          &class_device_attr_saturation);
 358                 class_device_remove_file(&vdev->class_dev,
 359                                          &class_device_attr_streaming);
 360                 class_device_remove_file(&vdev->class_dev,
 361                                          &class_device_attr_compression);
 362                 class_device_remove_file(&vdev->class_dev,
 363                                          &class_device_attr_bridge);
 364         }
 365 }
 366
 367
 368 /*
 369  * usbvision_open()
 370  *
 371  * This is part of Video 4 Linux API. The driver can be opened by one
 372  * client only (checks internal counter 'usbvision->user'). The procedure
 373  * then allocates buffers needed for video processing.
 374  *
 375  */
 376 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 377 {
 378         struct video_device *dev = video_devdata(file);
 379         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 380         int errCode = 0;
 381
 382         PDEBUG(DBG_IO, "open");
 383
 384
 385         usbvision_reset_powerOffTimer(usbvision);
 386
 387         if (usbvision->user)
 388                 errCode = -EBUSY;
 389         else {
 390                 /* Allocate memory for the scratch ring buffer */
 391                 errCode = usbvision_scratch_alloc(usbvision);
 392                 if (isocMode==ISOC_MODE_COMPRESS) {
 393                         /* Allocate intermediate decompression buffers 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 needs to be initialized before isoc transfer */
 425                         usbvision_muxsel(usbvision,0);
 426                         usbvision->user++;
 427                 }
 428                 else {
 429                         if (PowerOnAtOpen) {
 430                                 usbvision_i2c_unregister(usbvision);
 431                                 usbvision_power_off(usbvision);
 432                                 usbvision->initialized = 0;
 433                         }
 434                 }
 435                 up(&usbvision->lock);
 436         }
 437
 438         if (errCode) {
 439         }
 440
 441         /* prepare queues */
 442         usbvision_empty_framequeues(usbvision);
 443
 444         PDEBUG(DBG_IO, "success");
 445         return errCode;
 446 }
 447
 448 /*
 449  * usbvision_v4l2_close()
 450  *
 451  * This is part of Video 4 Linux API. The procedure
 452  * stops streaming and deallocates all buffers that were earlier
 453  * allocated in usbvision_v4l2_open().
 454  *
 455  */
 456 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 457 {
 458         struct video_device *dev = video_devdata(file);
 459         struct usb_usbvision *usbvision = (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 to avoid off/on every close/open short sequences */
 477                 usbvision_set_powerOffTimer(usbvision);
 478                 usbvision->initialized = 0;
 479         }
 480
 481         up(&usbvision->lock);
 482
 483         if (usbvision->remove_pending) {
 484                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 485                 usbvision_release(usbvision);
 486         }
 487
 488         PDEBUG(DBG_IO, "success");
 489
 490
 491         return 0;
 492 }
 493
 494
 495 /*
 496  * usbvision_ioctl()
 497  *
 498  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 499  *
 500  */
 501 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 502                                  unsigned int cmd, void *arg)
 503 {
 504         struct video_device *dev = video_devdata(file);
 505         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 506
 507         if (!USBVISION_IS_OPERATIONAL(usbvision))
 508                 return -EFAULT;
 509
 510         switch (cmd) {
 511
 512 #ifdef CONFIG_VIDEO_ADV_DEBUG
 513                 /* ioctls to allow direct acces to the NT100x registers */
 514                 case VIDIOC_DBG_G_REGISTER:
 515                 case VIDIOC_DBG_S_REGISTER:
 516                 {
 517                         struct v4l2_register *reg = arg;
 518                         int errCode;
 519
 520                         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 521                                 return -EINVAL;
 522                         if (!capable(CAP_SYS_ADMIN))
 523                                 return -EPERM;
 524                         /* NT100x has a 8-bit register space */
 525                         if (cmd == VIDIOC_DBG_G_REGISTER)
 526                                 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 527                         else
 528                                 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 529                         if (errCode < 0) {
 530                                 err("%s: VIDIOC_DBG_%c_REGISTER failed: error %d", __FUNCTION__,
 531                                     cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S', errCode);
 532                                 return errCode;
 533                         }
 534                         if (cmd == VIDIOC_DBG_S_REGISTER)
 535                                 reg->val = (u8)errCode;
 536
 537                         PDEBUG(DBG_IOCTL, "VIDIOC_DBG_%c_REGISTER reg=0x%02X, value=0x%02X",
 538                                cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S',
 539                                (unsigned int)reg->reg, (unsigned int)reg->val);
 540                         return 0;
 541                 }
 542 #endif
 543                 case VIDIOC_QUERYCAP:
 544                 {
 545                         struct v4l2_capability *vc=arg;
 546
 547                         memset(vc, 0, sizeof(*vc));
 548                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 549                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 550                                 sizeof(vc->card));
 551                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 552                                 sizeof(vc->bus_info));
 553                         vc->version = USBVISION_DRIVER_VERSION;
 554                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 555                                 V4L2_CAP_AUDIO |
 556                                 V4L2_CAP_READWRITE |
 557                                 V4L2_CAP_STREAMING |
 558                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 559                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 560                         return 0;
 561                 }
 562                 case VIDIOC_ENUMINPUT:
 563                 {
 564                         struct v4l2_input *vi = arg;
 565                         int chan;
 566
 567                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 568                                 return -EINVAL;
 569                         if (usbvision->have_tuner) {
 570                                 chan = vi->index;
 571                         }
 572                         else {
 573                                 chan = vi->index + 1; //skip Television string
 574                         }
 575                         switch(chan) {
 576                                 case 0:
 577                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 578                                                 strcpy(vi->name, "White Video Input");
 579                                         }
 580                                         else {
 581                                                 strcpy(vi->name, "Television");
 582                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 583                                                 vi->audioset = 1;
 584                                                 vi->tuner = chan;
 585                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 586                                         }
 587                                         break;
 588                                 case 1:
 589                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 590                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 591                                                 strcpy(vi->name, "Green Video Input");
 592                                         }
 593                                         else {
 594                                                 strcpy(vi->name, "Composite Video Input");
 595                                         }
 596                                         vi->std = V4L2_STD_PAL;
 597                                         break;
 598                                 case 2:
 599                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 600                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 601                                                 strcpy(vi->name, "Yellow Video Input");
 602                                         }
 603                                         else {
 604                                         strcpy(vi->name, "S-Video Input");
 605                                         }
 606                                         vi->std = V4L2_STD_PAL;
 607                                         break;
 608                                 case 3:
 609                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 610                                         strcpy(vi->name, "Red Video Input");
 611                                         vi->std = V4L2_STD_PAL;
 612                                         break;
 613                         }
 614                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 615                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 616                         return 0;
 617                 }
 618                 case VIDIOC_ENUMSTD:
 619                 {
 620                         struct v4l2_standard *e = arg;
 621                         unsigned int i;
 622                         int ret;
 623
 624                         i = e->index;
 625                         if (i >= TVNORMS)
 626                                 return -EINVAL;
 627                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 628                                                        tvnorms[e->index].name);
 629                         e->index = i;
 630                         if (ret < 0)
 631                                 return ret;
 632                         return 0;
 633                 }
 634                 case VIDIOC_G_INPUT:
 635                 {
 636                         int *input = arg;
 637                         *input = usbvision->ctl_input;
 638                         return 0;
 639                 }
 640                 case VIDIOC_S_INPUT:
 641                 {
 642                         int *input = arg;
 643                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 644                                 return -EINVAL;
 645                         usbvision->ctl_input = *input;
 646
 647                         down(&usbvision->lock);
 648                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 649                         usbvision_set_input(usbvision);
 650                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 651                         up(&usbvision->lock);
 652                         return 0;
 653                 }
 654                 case VIDIOC_G_STD:
 655                 {
 656                         v4l2_std_id *id = arg;
 657
 658                         *id = usbvision->tvnorm->id;
 659
 660                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 661                         return 0;
 662                 }
 663                 case VIDIOC_S_STD:
 664                 {
 665                         v4l2_std_id *id = arg;
 666                         unsigned int i;
 667
 668                         for (i = 0; i < TVNORMS; i++)
 669                                 if (*id == tvnorms[i].id)
 670                                         break;
 671                         if (i == TVNORMS)
 672                                 for (i = 0; i < TVNORMS; i++)
 673                                         if (*id & tvnorms[i].id)
 674                                                 break;
 675                         if (i == TVNORMS)
 676                                 return -EINVAL;
 677
 678                         down(&usbvision->lock);
 679                         usbvision->tvnorm = &tvnorms[i];
 680
 681                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 682                                          &usbvision->tvnorm->id);
 683
 684                         up(&usbvision->lock);
 685
 686                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 687                         return 0;
 688                 }
 689                 case VIDIOC_G_TUNER:
 690                 {
 691                         struct v4l2_tuner *vt = arg;
 692
 693                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 694                                 return -EINVAL;
 695                         strcpy(vt->name, "Television");
 696                         /* Let clients fill in the remainder of this struct */
 697                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 698
 699                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 700                         return 0;
 701                 }
 702                 case VIDIOC_S_TUNER:
 703                 {
 704                         struct v4l2_tuner *vt = arg;
 705
 706                         // Only no or one tuner for now
 707                         if (!usbvision->have_tuner || vt->index)
 708                                 return -EINVAL;
 709                         /* let clients handle this */
 710                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 711
 712                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 713                         return 0;
 714                 }
 715                 case VIDIOC_G_FREQUENCY:
 716                 {
 717                         struct v4l2_frequency *freq = arg;
 718
 719                         freq->tuner = 0; // Only one tuner
 720                         freq->type = V4L2_TUNER_ANALOG_TV;
 721                         freq->frequency = usbvision->freq;
 722                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 723                         return 0;
 724                 }
 725                 case VIDIOC_S_FREQUENCY:
 726                 {
 727                         struct v4l2_frequency *freq = arg;
 728
 729                         // Only no or one tuner for now
 730                         if (!usbvision->have_tuner || freq->tuner)
 731                                 return -EINVAL;
 732
 733                         usbvision->freq = freq->frequency;
 734                         call_i2c_clients(usbvision, cmd, freq);
 735                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 736                         return 0;
 737                 }
 738                 case VIDIOC_G_AUDIO:
 739                 {
 740                         struct v4l2_audio *v = arg;
 741                         memset(v,0, sizeof(v));
 742                         strcpy(v->name, "TV");
 743                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 744                         return 0;
 745                 }
 746                 case VIDIOC_S_AUDIO:
 747                 {
 748                         struct v4l2_audio *v = arg;
 749                         if(v->index) {
 750                                 return -EINVAL;
 751                         }
 752                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 753                         return 0;
 754                 }
 755                 case VIDIOC_QUERYCTRL:
 756                 {
 757                         struct v4l2_queryctrl *ctrl = arg;
 758                         int id=ctrl->id;
 759
 760                         memset(ctrl,0,sizeof(*ctrl));
 761                         ctrl->id=id;
 762
 763                         call_i2c_clients(usbvision, cmd, arg);
 764
 765                         if (ctrl->type)
 766                                 return 0;
 767                         else
 768                                 return -EINVAL;
 769
 770                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 771                 }
 772                 case VIDIOC_G_CTRL:
 773                 {
 774                         struct v4l2_control *ctrl = arg;
 775                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 776                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 777                         return 0;
 778                 }
 779                 case VIDIOC_S_CTRL:
 780                 {
 781                         struct v4l2_control *ctrl = arg;
 782
 783                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 784                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 785                         return 0;
 786                 }
 787                 case VIDIOC_REQBUFS:
 788                 {
 789                         struct v4l2_requestbuffers *vr = arg;
 790                         int ret;
 791
 792                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 793
 794                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 795                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 796                            (vr->memory != V4L2_MEMORY_MMAP))
 797                                 return -EINVAL;
 798
 799                         if(usbvision->streaming == Stream_On) {
 800                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 801                                     return ret;
 802                         }
 803
 804                         usbvision_frames_free(usbvision);
 805                         usbvision_empty_framequeues(usbvision);
 806                         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 807
 808                         usbvision->curFrame = NULL;
 809
 810                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 811                         return 0;
 812                 }
 813                 case VIDIOC_QUERYBUF:
 814                 {
 815                         struct v4l2_buffer *vb = arg;
 816                         struct usbvision_frame *frame;
 817
 818                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 819
 820                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 821                                 return -EINVAL;
 822                         }
 823                         if(vb->index>=usbvision->num_frames)  {
 824                                 return -EINVAL;
 825                         }
 826                         // Updating the corresponding frame state
 827                         vb->flags = 0;
 828                         frame = &usbvision->frame[vb->index];
 829                         if(frame->grabstate >= FrameState_Ready)
 830                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 831                         if(frame->grabstate >= FrameState_Done)
 832                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 833                         if(frame->grabstate == FrameState_Unused)
 834                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 835                         vb->memory = V4L2_MEMORY_MMAP;
 836
 837                         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 838
 839                         vb->memory = V4L2_MEMORY_MMAP;
 840                         vb->field = V4L2_FIELD_NONE;
 841                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 842                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 843                         vb->sequence = usbvision->frame[vb->index].sequence;
 844                         return 0;
 845                 }
 846                 case VIDIOC_QBUF:
 847                 {
 848                         struct v4l2_buffer *vb = arg;
 849                         struct usbvision_frame *frame;
 850                         unsigned long lock_flags;
 851
 852                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 853                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 854                                 return -EINVAL;
 855                         }
 856                         if(vb->index>=usbvision->num_frames)  {
 857                                 return -EINVAL;
 858                         }
 859
 860                         frame = &usbvision->frame[vb->index];
 861
 862                         if (frame->grabstate != FrameState_Unused) {
 863                                 return -EAGAIN;
 864                         }
 865
 866                         /* Mark it as ready and enqueue frame */
 867                         frame->grabstate = FrameState_Ready;
 868                         frame->scanstate = ScanState_Scanning;
 869                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 870
 871                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 872
 873                         /* set v4l2_format index */
 874                         frame->v4l2_format = usbvision->palette;
 875
 876                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 877                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 878                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 879
 880                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 881                         return 0;
 882                 }
 883                 case VIDIOC_DQBUF:
 884                 {
 885                         struct v4l2_buffer *vb = arg;
 886                         int ret;
 887                         struct usbvision_frame *f;
 888                         unsigned long lock_flags;
 889
 890                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 891                                 return -EINVAL;
 892
 893                         if (list_empty(&(usbvision->outqueue))) {
 894                                 if (usbvision->streaming == Stream_Idle)
 895                                         return -EINVAL;
 896                                 ret = wait_event_interruptible
 897                                         (usbvision->wait_frame,
 898                                          !list_empty(&(usbvision->outqueue)));
 899                                 if (ret)
 900                                         return ret;
 901                         }
 902
 903                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 904                         f = list_entry(usbvision->outqueue.next,
 905                                        struct usbvision_frame, frame);
 906                         list_del(usbvision->outqueue.next);
 907                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 908
 909                         f->grabstate = FrameState_Unused;
 910
 911                         vb->memory = V4L2_MEMORY_MMAP;
 912                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 913                         vb->index = f->index;
 914                         vb->sequence = f->sequence;
 915                         vb->timestamp = f->timestamp;
 916                         vb->field = V4L2_FIELD_NONE;
 917                         vb->bytesused = f->scanlength;
 918
 919                         return 0;
 920                 }
 921                 case VIDIOC_STREAMON:
 922                 {
 923                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 924
 925                         usbvision->streaming = Stream_On;
 926
 927                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 928
 929                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 930
 931                         return 0;
 932                 }
 933                 case VIDIOC_STREAMOFF:
 934                 {
 935                         int *type = arg;
 936                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 937
 938                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 939                                 return -EINVAL;
 940
 941                         if(usbvision->streaming == Stream_On) {
 942                                 usbvision_stream_interrupt(usbvision);
 943                                 // Stop all video streamings
 944                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 945                         }
 946                         usbvision_empty_framequeues(usbvision);
 947
 948                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 949                         return 0;
 950                 }
 951                 case VIDIOC_ENUM_FMT:
 952                 {
 953                         struct v4l2_fmtdesc *vfd = arg;
 954
 955                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 956                                 return -EINVAL;
 957                         }
 958                         vfd->flags = 0;
 959                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 960                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 961                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 962                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 963                         return 0;
 964                 }
 965                 case VIDIOC_G_FMT:
 966                 {
 967                         struct v4l2_format *vf = arg;
 968
 969                         switch (vf->type) {
 970                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 971                                 {
 972                                         vf->fmt.pix.width = usbvision->curwidth;
 973                                         vf->fmt.pix.height = usbvision->curheight;
 974                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 975                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 976                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 977                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 978                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 979                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 980                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
 981                                         return 0;
 982                                 }
 983                                 default:
 984                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
 985                                         return -EINVAL;
 986                         }
 987                         return 0;
 988                 }
 989                 case VIDIOC_TRY_FMT:
 990                 case VIDIOC_S_FMT:
 991                 {
 992                         struct v4l2_format *vf = arg;
 993                         int formatIdx,ret;
 994
 995                         switch(vf->type) {
 996                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 997                                 {
 998                                         /* Find requested format in available ones */
 999                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1000                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
1001                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1002                                                         break;
1003                                                 }
1004                                         }
1005                                         /* robustness */
1006                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1007                                                 return -EINVAL;
1008                                         }
1009                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1010                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1011
1012                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
1013                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1014
1015                                         if(cmd == VIDIOC_TRY_FMT) {
1016                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
1017                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1018                                                 return 0;
1019                                         }
1020
1021                                         /* stop io in case it is already in progress */
1022                                         if(usbvision->streaming == Stream_On) {
1023                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1024                                                         return ret;
1025                                         }
1026                                         usbvision_frames_free(usbvision);
1027                                         usbvision_empty_framequeues(usbvision);
1028
1029                                         usbvision->curFrame = NULL;
1030
1031                                         // by now we are committed to the new data...
1032                                         down(&usbvision->lock);
1033                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1034                                         up(&usbvision->lock);
1035
1036                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1037                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1038                                         return 0;
1039                                 }
1040                                 default:
1041                                         return -EINVAL;
1042                         }
1043                 }
1044                 default:
1045                         return -ENOIOCTLCMD;
1046         }
1047         return 0;
1048 }
1049
1050 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1051                        unsigned int cmd, unsigned long arg)
1052 {
1053         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1054 }
1055
1056
1057 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1058                       size_t count, loff_t *ppos)
1059 {
1060         struct video_device *dev = video_devdata(file);
1061         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1062         int noblock = file->f_flags & O_NONBLOCK;
1063         unsigned long lock_flags;
1064
1065         int ret,i;
1066         struct usbvision_frame *frame;
1067
1068         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1069
1070         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1071                 return -EFAULT;
1072
1073         /* This entry point is compatible with the mmap routines so that a user can do either
1074            VIDIOC_QBUF/VIDIOC_DQBUF to get frames or call read on the device. */
1075         if(!usbvision->num_frames) {
1076                 /* First, allocate some frames to work with if this has not been done with
1077                  VIDIOC_REQBUF */
1078                 usbvision_frames_free(usbvision);
1079                 usbvision_empty_framequeues(usbvision);
1080                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1081         }
1082
1083         if(usbvision->streaming != Stream_On) {
1084                 /* no stream is running, make it running ! */
1085                 usbvision->streaming = Stream_On;
1086                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1087         }
1088
1089         /* Then, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1090         for(i=0;i<usbvision->num_frames;i++) {
1091                 frame = &usbvision->frame[i];
1092                 if(frame->grabstate == FrameState_Unused) {
1093                         /* Mark it as ready and enqueue frame */
1094                         frame->grabstate = FrameState_Ready;
1095                         frame->scanstate = ScanState_Scanning;
1096                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1097
1098                         /* set v4l2_format index */
1099                         frame->v4l2_format = usbvision->palette;
1100
1101                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1102                         list_add_tail(&frame->frame, &usbvision->inqueue);
1103                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1104                 }
1105         }
1106
1107         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1108         if (list_empty(&(usbvision->outqueue))) {
1109                 if(noblock)
1110                         return -EAGAIN;
1111
1112                 ret = wait_event_interruptible
1113                         (usbvision->wait_frame,
1114                          !list_empty(&(usbvision->outqueue)));
1115                 if (ret)
1116                         return ret;
1117         }
1118
1119         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1120         frame = list_entry(usbvision->outqueue.next,
1121                            struct usbvision_frame, frame);
1122         list_del(usbvision->outqueue.next);
1123         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1124
1125         /* An error returns an empty frame */
1126         if (frame->grabstate == FrameState_Error) {
1127                 frame->bytes_read = 0;
1128                 return 0;
1129         }
1130
1131         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1132                        frame->index, frame->bytes_read, frame->scanlength);
1133
1134         /* copy bytes to user space; we allow for partials reads */
1135         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1136                 count = frame->scanlength - frame->bytes_read;
1137
1138         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1139                 return -EFAULT;
1140         }
1141
1142         frame->bytes_read += count;
1143         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1144                        (unsigned long)count, frame->bytes_read);
1145
1146         // For now, forget the frame if it has not been read in one shot.
1147 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1148                 frame->bytes_read = 0;
1149
1150                 /* Mark it as available to be used again. */
1151                 frame->grabstate = FrameState_Unused;
1152 /*      } */
1153
1154         return count;
1155 }
1156
1157 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1158 {
1159         unsigned long size = vma->vm_end - vma->vm_start,
1160                 start = vma->vm_start;
1161         void *pos;
1162         u32 i;
1163
1164         struct video_device *dev = video_devdata(file);
1165         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1166
1167         PDEBUG(DBG_MMAP, "mmap");
1168
1169         down(&usbvision->lock);
1170
1171         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1172                 up(&usbvision->lock);
1173                 return -EFAULT;
1174         }
1175
1176         if (!(vma->vm_flags & VM_WRITE) ||
1177             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1178                 up(&usbvision->lock);
1179                 return -EINVAL;
1180         }
1181
1182         for (i = 0; i < usbvision->num_frames; i++) {
1183                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1184                         break;
1185         }
1186         if (i == usbvision->num_frames) {
1187                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1188                 up(&usbvision->lock);
1189                 return -EINVAL;
1190         }
1191
1192         /* VM_IO is eventually going to replace PageReserved altogether */
1193         vma->vm_flags |= VM_IO;
1194         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1195
1196         pos = usbvision->frame[i].data;
1197         while (size > 0) {
1198
1199                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1200                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1201                         up(&usbvision->lock);
1202                         return -EAGAIN;
1203                 }
1204                 start += PAGE_SIZE;
1205                 pos += PAGE_SIZE;
1206                 size -= PAGE_SIZE;
1207         }
1208
1209         up(&usbvision->lock);
1210         return 0;
1211 }
1212
1213
1214 /*
1215  * Here comes the stuff for radio on usbvision based devices
1216  *
1217  */
1218 static int usbvision_radio_open(struct inode *inode, struct file *file)
1219 {
1220         struct video_device *dev = video_devdata(file);
1221         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1222         struct v4l2_frequency freq;
1223         int errCode = 0;
1224
1225         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1226
1227         down(&usbvision->lock);
1228
1229         if (usbvision->user) {
1230                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1231                 errCode = -EBUSY;
1232         }
1233         else {
1234                 if(PowerOnAtOpen) {
1235                         usbvision_reset_powerOffTimer(usbvision);
1236                         if (usbvision->power == 0) {
1237                                 usbvision_power_on(usbvision);
1238                                 usbvision_i2c_register(usbvision);
1239                         }
1240                 }
1241
1242                 /* Alternate interface 1 is is the biggest frame size */
1243                 errCode = usbvision_set_alternate(usbvision);
1244                 if (errCode < 0) {
1245                         usbvision->last_error = errCode;
1246                         return -EBUSY;
1247                 }
1248
1249                 // If so far no errors then we shall start the radio
1250                 usbvision->radio = 1;
1251                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1252                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1253                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1254                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1255                 usbvision->user++;
1256         }
1257
1258         if (errCode) {
1259                 if (PowerOnAtOpen) {
1260                         usbvision_i2c_unregister(usbvision);
1261                         usbvision_power_off(usbvision);
1262                         usbvision->initialized = 0;
1263                 }
1264         }
1265         up(&usbvision->lock);
1266         return errCode;
1267 }
1268
1269
1270 static int usbvision_radio_close(struct inode *inode, struct file *file)
1271 {
1272         struct video_device *dev = video_devdata(file);
1273         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1274         int errCode = 0;
1275
1276         PDEBUG(DBG_IO, "");
1277
1278         down(&usbvision->lock);
1279
1280         /* Set packet size to 0 */
1281         usbvision->ifaceAlt=0;
1282         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1283                                     usbvision->ifaceAlt);
1284
1285         usbvision_audio_off(usbvision);
1286         usbvision->radio=0;
1287         usbvision->user--;
1288
1289         if (PowerOnAtOpen) {
1290                 usbvision_set_powerOffTimer(usbvision);
1291                 usbvision->initialized = 0;
1292         }
1293
1294         up(&usbvision->lock);
1295
1296         if (usbvision->remove_pending) {
1297                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1298                 usbvision_release(usbvision);
1299         }
1300
1301
1302         PDEBUG(DBG_IO, "success");
1303
1304         return errCode;
1305 }
1306
1307 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1308                                  unsigned int cmd, void *arg)
1309 {
1310         struct video_device *dev = video_devdata(file);
1311         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1312
1313         if (!USBVISION_IS_OPERATIONAL(usbvision))
1314                 return -EIO;
1315
1316         switch (cmd) {
1317                 case VIDIOC_QUERYCAP:
1318                 {
1319                         struct v4l2_capability *vc=arg;
1320
1321                         memset(vc, 0, sizeof(*vc));
1322                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1323                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1324                                 sizeof(vc->card));
1325                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1326                                 sizeof(vc->bus_info));
1327                         vc->version = USBVISION_DRIVER_VERSION;
1328                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1329                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1330                         return 0;
1331                 }
1332                 case VIDIOC_QUERYCTRL:
1333                 {
1334                         struct v4l2_queryctrl *ctrl = arg;
1335                         int id=ctrl->id;
1336
1337                         memset(ctrl,0,sizeof(*ctrl));
1338                         ctrl->id=id;
1339
1340                         call_i2c_clients(usbvision, cmd, arg);
1341                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1342
1343                         if (ctrl->type)
1344                                 return 0;
1345                         else
1346                                 return -EINVAL;
1347
1348                 }
1349                 case VIDIOC_G_CTRL:
1350                 {
1351                         struct v4l2_control *ctrl = arg;
1352
1353                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1354                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1355                         return 0;
1356                 }
1357                 case VIDIOC_S_CTRL:
1358                 {
1359                         struct v4l2_control *ctrl = arg;
1360
1361                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1362                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1363                         return 0;
1364                 }
1365                 case VIDIOC_G_TUNER:
1366                 {
1367                         struct v4l2_tuner *t = arg;
1368
1369                         if (t->index > 0)
1370                                 return -EINVAL;
1371
1372                         memset(t,0,sizeof(*t));
1373                         strcpy(t->name, "Radio");
1374                         t->type = V4L2_TUNER_RADIO;
1375
1376                         /* Let clients fill in the remainder of this struct */
1377                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1378                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1379                         return 0;
1380                 }
1381                 case VIDIOC_S_TUNER:
1382                 {
1383                         struct v4l2_tuner *vt = arg;
1384
1385                         // Only no or one tuner for now
1386                         if (!usbvision->have_tuner || vt->index)
1387                                 return -EINVAL;
1388                         /* let clients handle this */
1389                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1390
1391                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1392                         return 0;
1393                 }
1394                 case VIDIOC_G_AUDIO:
1395                 {
1396                         struct v4l2_audio *a = arg;
1397
1398                         memset(a,0,sizeof(*a));
1399                         strcpy(a->name,"Radio");
1400                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1401                         return 0;
1402                 }
1403                 case VIDIOC_S_AUDIO:
1404                 case VIDIOC_S_INPUT:
1405                 case VIDIOC_S_STD:
1406                 return 0;
1407
1408                 case VIDIOC_G_FREQUENCY:
1409                 {
1410                         struct v4l2_frequency *f = arg;
1411
1412                         memset(f,0,sizeof(*f));
1413
1414                         f->type = V4L2_TUNER_RADIO;
1415                         f->frequency = usbvision->freq;
1416                         call_i2c_clients(usbvision, cmd, f);
1417                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1418
1419                         return 0;
1420                 }
1421                 case VIDIOC_S_FREQUENCY:
1422                 {
1423                         struct v4l2_frequency *f = arg;
1424
1425                         if (f->tuner != 0)
1426                                 return -EINVAL;
1427                         usbvision->freq = f->frequency;
1428                         call_i2c_clients(usbvision, cmd, f);
1429                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1430
1431                         return 0;
1432                 }
1433                 default:
1434                 {
1435                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1436                         return -ENOIOCTLCMD;
1437                 }
1438         }
1439         return 0;
1440 }
1441
1442
1443 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1444                        unsigned int cmd, unsigned long arg)
1445 {
1446         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1447 }
1448
1449
1450 /*
1451  * Here comes the stuff for vbi on usbvision based devices
1452  *
1453  */
1454 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1455 {
1456         /* TODO */
1457         return -EINVAL;
1458
1459 }
1460
1461 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1462 {
1463         /* TODO */
1464         return -EINVAL;
1465 }
1466
1467 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1468                                  unsigned int cmd, void *arg)
1469 {
1470         /* TODO */
1471         return -EINVAL;
1472 }
1473
1474 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1475                        unsigned int cmd, unsigned long arg)
1476 {
1477         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1478 }
1479
1480
1481 //
1482 // Video registration stuff
1483 //
1484
1485 // Video template
1486 static const struct file_operations usbvision_fops = {
1487         .owner             = THIS_MODULE,
1488         .open           = usbvision_v4l2_open,
1489         .release        = usbvision_v4l2_close,
1490         .read           = usbvision_v4l2_read,
1491         .mmap           = usbvision_v4l2_mmap,
1492         .ioctl          = usbvision_v4l2_ioctl,
1493         .llseek         = no_llseek,
1494 };
1495 static struct video_device usbvision_video_template = {
1496         .owner             = THIS_MODULE,
1497         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1498         .hardware       = VID_HARDWARE_USBVISION,
1499         .fops           = &usbvision_fops,
1500         .name           = "usbvision-video",
1501         .release        = video_device_release,
1502         .minor          = -1,
1503 };
1504
1505
1506 // Radio template
1507 static const struct file_operations usbvision_radio_fops = {
1508         .owner             = THIS_MODULE,
1509         .open           = usbvision_radio_open,
1510         .release        = usbvision_radio_close,
1511         .ioctl          = usbvision_radio_ioctl,
1512         .llseek         = no_llseek,
1513 };
1514
1515 static struct video_device usbvision_radio_template=
1516 {
1517         .owner             = THIS_MODULE,
1518         .type           = VID_TYPE_TUNER,
1519         .hardware       = VID_HARDWARE_USBVISION,
1520         .fops           = &usbvision_radio_fops,
1521         .release        = video_device_release,
1522         .name           = "usbvision-radio",
1523         .minor          = -1,
1524 };
1525
1526
1527 // vbi template
1528 static const struct file_operations usbvision_vbi_fops = {
1529         .owner             = THIS_MODULE,
1530         .open           = usbvision_vbi_open,
1531         .release        = usbvision_vbi_close,
1532         .ioctl          = usbvision_vbi_ioctl,
1533         .llseek         = no_llseek,
1534 };
1535
1536 static struct video_device usbvision_vbi_template=
1537 {
1538         .owner             = THIS_MODULE,
1539         .type           = VID_TYPE_TUNER,
1540         .hardware       = VID_HARDWARE_USBVISION,
1541         .fops           = &usbvision_vbi_fops,
1542         .release        = video_device_release,
1543         .name           = "usbvision-vbi",
1544         .minor          = -1,
1545 };
1546
1547
1548 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1549                                         struct video_device *vdev_template,
1550                                         char *name)
1551 {
1552         struct usb_device *usb_dev = usbvision->dev;
1553         struct video_device *vdev;
1554
1555         if (usb_dev == NULL) {
1556                 err("%s: usbvision->dev is not set", __FUNCTION__);
1557                 return NULL;
1558         }
1559
1560         vdev = video_device_alloc();
1561         if (NULL == vdev) {
1562                 return NULL;
1563         }
1564         *vdev = *vdev_template;
1565 //      vdev->minor   = -1;
1566         vdev->dev     = &usb_dev->dev;
1567         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1568         video_set_drvdata(vdev, usbvision);
1569         return vdev;
1570 }
1571
1572 // unregister video4linux devices
1573 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1574 {
1575         // vbi Device:
1576         if (usbvision->vbi) {
1577                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1578                 if (usbvision->vbi->minor != -1) {
1579                         video_unregister_device(usbvision->vbi);
1580                 }
1581                 else {
1582                         video_device_release(usbvision->vbi);
1583                 }
1584                 usbvision->vbi = NULL;
1585         }
1586
1587         // Radio Device:
1588         if (usbvision->rdev) {
1589                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1590                 if (usbvision->rdev->minor != -1) {
1591                         video_unregister_device(usbvision->rdev);
1592                 }
1593                 else {
1594                         video_device_release(usbvision->rdev);
1595                 }
1596                 usbvision->rdev = NULL;
1597         }
1598
1599         // Video Device:
1600         if (usbvision->vdev) {
1601                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1602                 if (usbvision->vdev->minor != -1) {
1603                         video_unregister_device(usbvision->vdev);
1604                 }
1605                 else {
1606                         video_device_release(usbvision->vdev);
1607                 }
1608                 usbvision->vdev = NULL;
1609         }
1610 }
1611
1612 // register video4linux devices
1613 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1614 {
1615         // Video Device:
1616         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1617         if (usbvision->vdev == NULL) {
1618                 goto err_exit;
1619         }
1620         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1621                 goto err_exit;
1622         }
1623         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n", usbvision->nr,usbvision->vdev->minor & 0x1f);
1624
1625         // Radio Device:
1626         if (usbvision_device_data[usbvision->DevModel].Radio) {
1627                 // usbvision has radio
1628                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1629                 if (usbvision->rdev == NULL) {
1630                         goto err_exit;
1631                 }
1632                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1633                         goto err_exit;
1634                 }
1635                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n", usbvision->nr, usbvision->rdev->minor & 0x1f);
1636         }
1637         // vbi Device:
1638         if (usbvision_device_data[usbvision->DevModel].vbi) {
1639                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1640                 if (usbvision->vdev == NULL) {
1641                         goto err_exit;
1642                 }
1643                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1644                         goto err_exit;
1645                 }
1646                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n", usbvision->nr,usbvision->vbi->minor & 0x1f);
1647         }
1648         // all done
1649         return 0;
1650
1651  err_exit:
1652         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1653         usbvision_unregister_video(usbvision);
1654         return -1;
1655 }
1656
1657 /*
1658  * usbvision_alloc()
1659  *
1660  * This code allocates the struct usb_usbvision. It is filled with default values.
1661  *
1662  * Returns NULL on error, a pointer to usb_usbvision else.
1663  *
1664  */
1665 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1666 {
1667         struct usb_usbvision *usbvision;
1668
1669         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1670                 goto err_exit;
1671         }
1672
1673         usbvision->dev = dev;
1674
1675         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1676
1677         // prepare control urb for control messages during interrupts
1678         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1679         if (usbvision->ctrlUrb == NULL) {
1680                 goto err_exit;
1681         }
1682         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1683         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1684
1685         usbvision_init_powerOffTimer(usbvision);
1686
1687         return usbvision;
1688
1689 err_exit:
1690         if (usbvision && usbvision->ctrlUrb) {
1691                 usb_free_urb(usbvision->ctrlUrb);
1692         }
1693         if (usbvision) {
1694                 kfree(usbvision);
1695         }
1696         return NULL;
1697 }
1698
1699 /*
1700  * usbvision_release()
1701  *
1702  * This code does final release of struct usb_usbvision. This happens
1703  * after the device is disconnected -and- all clients closed their files.
1704  *
1705  */
1706 static void usbvision_release(struct usb_usbvision *usbvision)
1707 {
1708         PDEBUG(DBG_PROBE, "");
1709
1710         down(&usbvision->lock);
1711
1712         usbvision_reset_powerOffTimer(usbvision);
1713
1714         usbvision->initialized = 0;
1715
1716         up(&usbvision->lock);
1717
1718         usbvision_remove_sysfs(usbvision->vdev);
1719         usbvision_unregister_video(usbvision);
1720
1721         if (usbvision->ctrlUrb) {
1722                 usb_free_urb(usbvision->ctrlUrb);
1723         }
1724
1725         kfree(usbvision);
1726
1727         PDEBUG(DBG_PROBE, "success");
1728 }
1729
1730
1731 /******************************** usb interface *****************************************/
1732
1733 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1734 {
1735         int model,i;
1736
1737         if (usbvision == NULL)
1738                 return;
1739
1740         model = usbvision->DevModel;
1741         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1742
1743         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1744                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1745         } else {
1746                 usbvision->Vin_Reg2_Preset = 0;
1747         }
1748
1749         for (i = 0; i < TVNORMS; i++)
1750                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1751                         break;
1752         if (i == TVNORMS)
1753                 i = 0;
1754         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1755
1756         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1757         usbvision->ctl_input = 0;
1758
1759         /* This should be here to make i2c clients to be able to register */
1760         usbvision_audio_off(usbvision); //first switch off audio
1761         if (!PowerOnAtOpen) {
1762                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1763                 usbvision_i2c_register(usbvision);
1764         }
1765 }
1766
1767 /*
1768  * usbvision_probe()
1769  *
1770  * This procedure queries device descriptor and accepts the interface
1771  * if it looks like USBVISION video device
1772  *
1773  */
1774 static int __devinit usbvision_probe(struct usb_interface *intf,
1775                                      const struct usb_device_id *devid)
1776 {
1777         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1778         struct usb_interface *uif;
1779         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1780         const struct usb_host_interface *interface;
1781         struct usb_usbvision *usbvision = NULL;
1782         const struct usb_endpoint_descriptor *endpoint;
1783         int model,i;
1784
1785         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1786                                 dev->descriptor.idVendor,
1787                                 dev->descriptor.idProduct, ifnum);
1788
1789         model = devid->driver_info;
1790         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1791                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1792                 return -ENODEV;
1793         }
1794         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1795                                 usbvision_device_data[model].ModelString);
1796
1797         if (usbvision_device_data[model].Interface >= 0) {
1798                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1799         }
1800         else {
1801                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1802         }
1803         endpoint = &interface->endpoint[1].desc;
1804         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1805                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1806                 err("%s: Endpoint attributes %d", __FUNCTION__, endpoint->bmAttributes);
1807                 return -ENODEV;
1808         }
1809         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1810                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1811                 return -ENODEV;
1812         }
1813
1814         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1815                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1816                 return -ENOMEM;
1817         }
1818
1819         if (dev->descriptor.bNumConfigurations > 1) {
1820                 usbvision->bridgeType = BRIDGE_NT1004;
1821         }
1822         else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1823                 usbvision->bridgeType = BRIDGE_NT1005;
1824         }
1825         else {
1826                 usbvision->bridgeType = BRIDGE_NT1003;
1827         }
1828         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1829
1830         down(&usbvision->lock);
1831
1832         /* compute alternate max packet sizes */
1833         uif = dev->actconfig->interface[0];
1834
1835         usbvision->num_alt=uif->num_altsetting;
1836         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1837         usbvision->alt_max_pkt_size = kmalloc(32*
1838                                               usbvision->num_alt,GFP_KERNEL);
1839         if (usbvision->alt_max_pkt_size == NULL) {
1840                 err("usbvision: out of memory!\n");
1841                 return -ENOMEM;
1842         }
1843
1844         for (i = 0; i < usbvision->num_alt ; i++) {
1845                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1846                                       wMaxPacketSize);
1847                 usbvision->alt_max_pkt_size[i] =
1848                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1849                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1850                        usbvision->alt_max_pkt_size[i]);
1851         }
1852
1853
1854         usbvision->nr = usbvision_nr++;
1855
1856         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1857         if (usbvision->have_tuner) {
1858                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1859         }
1860
1861         usbvision->tuner_addr = ADDR_UNSET;
1862
1863         usbvision->DevModel = model;
1864         usbvision->remove_pending = 0;
1865         usbvision->iface = ifnum;
1866         usbvision->ifaceAlt = 0;
1867         usbvision->video_endp = endpoint->bEndpointAddress;
1868         usbvision->isocPacketSize = 0;
1869         usbvision->usb_bandwidth = 0;
1870         usbvision->user = 0;
1871         usbvision->streaming = Stream_Off;
1872         usbvision_register_video(usbvision);
1873         usbvision_configure_video(usbvision);
1874         up(&usbvision->lock);
1875
1876
1877         usb_set_intfdata (intf, usbvision);
1878         usbvision_create_sysfs(usbvision->vdev);
1879
1880         PDEBUG(DBG_PROBE, "success");
1881         return 0;
1882 }
1883
1884
1885 /*
1886  * usbvision_disconnect()
1887  *
1888  * This procedure stops all driver activity, deallocates interface-private
1889  * structure (pointed by 'ptr') and after that driver should be removable
1890  * with no ill consequences.
1891  *
1892  */
1893 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1894 {
1895         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1896
1897         PDEBUG(DBG_PROBE, "");
1898
1899         if (usbvision == NULL) {
1900                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1901                 return;
1902         }
1903         usb_set_intfdata (intf, NULL);
1904
1905         down(&usbvision->lock);
1906
1907         // At this time we ask to cancel outstanding URBs
1908         usbvision_stop_isoc(usbvision);
1909
1910         if (usbvision->power) {
1911                 usbvision_i2c_unregister(usbvision);
1912                 usbvision_power_off(usbvision);
1913         }
1914         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1915
1916         usb_put_dev(usbvision->dev);
1917         usbvision->dev = NULL;  // USB device is no more
1918
1919         up(&usbvision->lock);
1920
1921         if (usbvision->user) {
1922                 printk(KERN_INFO "%s: In use, disconnect pending\n", __FUNCTION__);
1923                 wake_up_interruptible(&usbvision->wait_frame);
1924                 wake_up_interruptible(&usbvision->wait_stream);
1925         }
1926         else {
1927                 usbvision_release(usbvision);
1928         }
1929
1930         PDEBUG(DBG_PROBE, "success");
1931
1932 }
1933
1934 static struct usb_driver usbvision_driver = {
1935         .name           = "usbvision",
1936         .id_table       = usbvision_table,
1937         .probe          = usbvision_probe,
1938         .disconnect     = usbvision_disconnect
1939 };
1940
1941 /*
1942  * usbvision_init()
1943  *
1944  * This code is run to initialize the driver.
1945  *
1946  */
1947 static int __init usbvision_init(void)
1948 {
1949         int errCode;
1950
1951         PDEBUG(DBG_PROBE, "");
1952
1953         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
1954         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1955         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1956         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1957
1958         /* disable planar mode support unless compression enabled */
1959         if (isocMode != ISOC_MODE_COMPRESS ) {
1960                 // FIXME : not the right way to set supported flag
1961                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1962                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1963         }
1964
1965         errCode = usb_register(&usbvision_driver);
1966
1967         if (errCode == 0) {
1968                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1969                 PDEBUG(DBG_PROBE, "success");
1970         }
1971         return errCode;
1972 }
1973
1974 static void __exit usbvision_exit(void)
1975 {
1976  PDEBUG(DBG_PROBE, "");
1977
1978  usb_deregister(&usbvision_driver);
1979  PDEBUG(DBG_PROBE, "success");
1980 }
1981
1982 module_init(usbvision_init);
1983 module_exit(usbvision_exit);
1984
1985 /*
1986  * Overrides for Emacs so that we follow Linus's tabbing style.
1987  * ---------------------------------------------------------------------------
1988  * Local variables:
1989  * c-basic-offset: 8
1990  * End:
1991  */