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/sched.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/smp_lock.h>
  57 #include <linux/videodev.h>
  58 #include <linux/vmalloc.h>
  59 #include <linux/module.h>
  60 #include <linux/init.h>
  61 #include <linux/spinlock.h>
  62 #include <asm/io.h>
  63 #include <linux/videodev2.h>
  64 #include <linux/video_decoder.h>
  65 #include <linux/i2c.h>
  66
  67 #include <media/saa7115.h>
  68 #include <media/v4l2-common.h>
  69 #include <media/tuner.h>
  70 #include <media/audiochip.h>
  71
  72 #include <linux/moduleparam.h>
  73 #include <linux/workqueue.h>
  74
  75 #ifdef CONFIG_KMOD
  76 #include <linux/kmod.h>
  77 #endif
  78
  79 #include "usbvision.h"
  80
  81 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, Dwaine Garden <DwaineGarden@rogers.com>"
  82 #define DRIVER_NAME "usbvision"
  83 #define DRIVER_ALIAS "USBVision"
  84 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  85 #define DRIVER_LICENSE "GPL"
  86 #define USBVISION_DRIVER_VERSION_MAJOR 0
  87 #define USBVISION_DRIVER_VERSION_MINOR 9
  88 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  89 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  91
  92 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  93
  94
  95 #ifdef USBVISION_DEBUG
  96         #define PDEBUG(level, fmt, args...) \
  97                 if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
  98 #else
  99         #define PDEBUG(level, fmt, args...) do {} while(0)
 100 #endif
 101
 102 #define DBG_IOCTL       1<<0
 103 #define DBG_IO          1<<1
 104 #define DBG_PROBE       1<<2
 105 #define DBG_MMAP        1<<3
 106
 107 //String operations
 108 #define rmspace(str)    while(*str==' ') str++;
 109 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 110
 111
 112 static int usbvision_nr = 0;                    // sequential number of usbvision device
 113
 114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 115         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 116         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 117         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 118         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 119         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 120         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 121         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 122         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 123 };
 124
 125 /* supported tv norms */
 126 static struct usbvision_tvnorm tvnorms[] = {
 127         {
 128                 .name = "PAL",
 129                 .id = V4L2_STD_PAL,
 130         }, {
 131                 .name = "NTSC",
 132                 .id = V4L2_STD_NTSC,
 133         }, {
 134                  .name = "SECAM",
 135                  .id = V4L2_STD_SECAM,
 136         }, {
 137                 .name = "PAL-M",
 138                 .id = V4L2_STD_PAL_M,
 139         }
 140 };
 141
 142 #define TVNORMS ARRAY_SIZE(tvnorms)
 143
 144 // Function prototypes
 145 static void usbvision_release(struct usb_usbvision *usbvision);
 146
 147 // Default initalization of device driver parameters
 148 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 149 static int video_debug = 0;                             // Set the default Debug Mode of the device driver
 150 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 151 static int video_nr = -1;                               // Sequential Number of Video Device
 152 static int radio_nr = -1;                               // Sequential Number of Radio Device
 153 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 154 static char *CustomDevice=NULL;                         // Set as nothing....
 155
 156 // Grab parameters for the device driver
 157
 158 #if defined(module_param)                               // Showing parameters under SYSFS
 159 module_param(isocMode, int, 0444);
 160 module_param(video_debug, int, 0444);
 161 module_param(PowerOnAtOpen, int, 0444);
 162 module_param(video_nr, int, 0444);
 163 module_param(radio_nr, int, 0444);
 164 module_param(vbi_nr, int, 0444);
 165 module_param(CustomDevice, charp, 0444);
 166 #else                                                   // Old Style
 167 MODULE_PARAM(isocMode, "i");
 168 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 169 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 170 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 171 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.
 172 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 173 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 174 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 175 MODULE_PARM(CustomDevice, "s");                         // .... CustomDevice
 176 #endif
 177
 178 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 179 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 180 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 181 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 182 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 183 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 184 MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
 185
 186
 187 // Misc stuff
 188 MODULE_AUTHOR(DRIVER_AUTHOR);
 189 MODULE_DESCRIPTION(DRIVER_DESC);
 190 MODULE_LICENSE(DRIVER_LICENSE);
 191 MODULE_VERSION(USBVISION_VERSION_STRING);
 192 MODULE_ALIAS(DRIVER_ALIAS);
 193
 194
 195 /****************************************************************************************/
 196 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 197 /* Device information is located at /sys/class/video4linux/video0                       */
 198 /* Device parameters information is located at /sys/module/usbvision                    */
 199 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 200 /****************************************************************************************/
 201
 202
 203 #define YES_NO(x) ((x) ? "Yes" : "No")
 204
 205 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 206 {
 207         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 208         return video_get_drvdata(vdev);
 209 }
 210
 211 static ssize_t show_version(struct class_device *cd, char *buf)
 212 {
 213         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 214 }
 215 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 216
 217 static ssize_t show_model(struct class_device *cd, char *buf)
 218 {
 219         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 220         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 221         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 222 }
 223 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 224
 225 static ssize_t show_hue(struct class_device *cd, char *buf)
 226 {
 227         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 228         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 229         struct v4l2_control ctrl;
 230         ctrl.id = V4L2_CID_HUE;
 231         ctrl.value = 0;
 232         if(usbvision->user)
 233                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 234         return sprintf(buf, "%d\n", ctrl.value >> 8);
 235 }
 236 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 237
 238 static ssize_t show_contrast(struct class_device *cd, char *buf)
 239 {
 240         struct video_device *vdev = 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_CONTRAST;
 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 >> 8);
 248 }
 249 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 250
 251 static ssize_t show_brightness(struct class_device *cd, char *buf)
 252 {
 253         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 255         struct v4l2_control ctrl;
 256         ctrl.id = V4L2_CID_BRIGHTNESS;
 257         ctrl.value = 0;
 258         if(usbvision->user)
 259                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 260         return sprintf(buf, "%d\n", ctrl.value >> 8);
 261 }
 262 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 263
 264 static ssize_t show_saturation(struct class_device *cd, char *buf)
 265 {
 266         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         struct v4l2_control ctrl;
 269         ctrl.id = V4L2_CID_SATURATION;
 270         ctrl.value = 0;
 271         if(usbvision->user)
 272                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 273         return sprintf(buf, "%d\n", ctrl.value >> 8);
 274 }
 275 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 276
 277 static ssize_t show_streaming(struct class_device *cd, char *buf)
 278 {
 279         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 280         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 281         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 282 }
 283 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 284
 285 static ssize_t show_compression(struct class_device *cd, char *buf)
 286 {
 287         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 288         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 289         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 290 }
 291 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 292
 293 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 294 {
 295         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 296         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 297         return sprintf(buf, "%d\n", usbvision->bridgeType);
 298 }
 299 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 300
 301 static void usbvision_create_sysfs(struct video_device *vdev)
 302 {
 303         int res;
 304         if (!vdev)
 305                 return;
 306         do {
 307                 res=class_device_create_file(&vdev->class_dev,
 308                                              &class_device_attr_version);
 309                 if (res<0)
 310                         break;
 311                 res=class_device_create_file(&vdev->class_dev,
 312                                              &class_device_attr_model);
 313                 if (res<0)
 314                         break;
 315                 res=class_device_create_file(&vdev->class_dev,
 316                                              &class_device_attr_hue);
 317                 if (res<0)
 318                         break;
 319                 res=class_device_create_file(&vdev->class_dev,
 320                                              &class_device_attr_contrast);
 321                 if (res<0)
 322                         break;
 323                 res=class_device_create_file(&vdev->class_dev,
 324                                              &class_device_attr_brightness);
 325                 if (res<0)
 326                         break;
 327                 res=class_device_create_file(&vdev->class_dev,
 328                                              &class_device_attr_saturation);
 329                 if (res<0)
 330                         break;
 331                 res=class_device_create_file(&vdev->class_dev,
 332                                              &class_device_attr_streaming);
 333                 if (res<0)
 334                         break;
 335                 res=class_device_create_file(&vdev->class_dev,
 336                                              &class_device_attr_compression);
 337                 if (res<0)
 338                         break;
 339                 res=class_device_create_file(&vdev->class_dev,
 340                                              &class_device_attr_bridge);
 341                 if (res>=0)
 342                         return;
 343         } while (0);
 344
 345         err("%s error: %d\n", __FUNCTION__, res);
 346 }
 347
 348 static void usbvision_remove_sysfs(struct video_device *vdev)
 349 {
 350         if (vdev) {
 351                 class_device_remove_file(&vdev->class_dev,
 352                                          &class_device_attr_version);
 353                 class_device_remove_file(&vdev->class_dev,
 354                                          &class_device_attr_model);
 355                 class_device_remove_file(&vdev->class_dev,
 356                                          &class_device_attr_hue);
 357                 class_device_remove_file(&vdev->class_dev,
 358                                          &class_device_attr_contrast);
 359                 class_device_remove_file(&vdev->class_dev,
 360                                          &class_device_attr_brightness);
 361                 class_device_remove_file(&vdev->class_dev,
 362                                          &class_device_attr_saturation);
 363                 class_device_remove_file(&vdev->class_dev,
 364                                          &class_device_attr_streaming);
 365                 class_device_remove_file(&vdev->class_dev,
 366                                          &class_device_attr_compression);
 367                 class_device_remove_file(&vdev->class_dev,
 368                                          &class_device_attr_bridge);
 369         }
 370 }
 371
 372
 373 /*
 374  * usbvision_open()
 375  *
 376  * This is part of Video 4 Linux API. The driver can be opened by one
 377  * client only (checks internal counter 'usbvision->user'). The procedure
 378  * then allocates buffers needed for video processing.
 379  *
 380  */
 381 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 382 {
 383         struct video_device *dev = video_devdata(file);
 384         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 385         int errCode = 0;
 386
 387         PDEBUG(DBG_IO, "open");
 388
 389
 390         usbvision_reset_powerOffTimer(usbvision);
 391
 392         if (usbvision->user)
 393                 errCode = -EBUSY;
 394         else {
 395                 /* Allocate memory for the frame buffers */
 396                 errCode = usbvision_frames_alloc(usbvision);
 397                 if(!errCode) {
 398                         /* Allocate memory for the scratch ring buffer */
 399                         errCode = usbvision_scratch_alloc(usbvision);
 400                         if ((!errCode) && (isocMode==ISOC_MODE_COMPRESS)) {
 401                                 /* Allocate intermediate decompression buffers only if needed */
 402                                 errCode = usbvision_decompress_alloc(usbvision);
 403                         }
 404                 }
 405                 if (errCode) {
 406                         /* Deallocate all buffers if trouble */
 407                         usbvision_frames_free(usbvision);
 408                         usbvision_scratch_free(usbvision);
 409                         usbvision_decompress_free(usbvision);
 410                 }
 411         }
 412
 413         /* If so far no errors then we shall start the camera */
 414         if (!errCode) {
 415                 down(&usbvision->lock);
 416                 if (usbvision->power == 0) {
 417                         usbvision_power_on(usbvision);
 418                         usbvision_init_i2c(usbvision);
 419                 }
 420
 421                 /* Send init sequence only once, it's large! */
 422                 if (!usbvision->initialized) {
 423                         int setup_ok = 0;
 424                         setup_ok = usbvision_setup(usbvision,isocMode);
 425                         if (setup_ok)
 426                                 usbvision->initialized = 1;
 427                         else
 428                                 errCode = -EBUSY;
 429                 }
 430
 431                 if (!errCode) {
 432                         usbvision_begin_streaming(usbvision);
 433                         errCode = usbvision_init_isoc(usbvision);
 434                         /* device needs to be initialized before isoc transfer */
 435                         usbvision_muxsel(usbvision,0);
 436                         usbvision->user++;
 437                 }
 438                 else {
 439                         if (PowerOnAtOpen) {
 440                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
 441                                 usbvision_power_off(usbvision);
 442                                 usbvision->initialized = 0;
 443                         }
 444                 }
 445                 up(&usbvision->lock);
 446         }
 447
 448         if (errCode) {
 449         }
 450
 451         /* prepare queues */
 452         usbvision_empty_framequeues(usbvision);
 453
 454         PDEBUG(DBG_IO, "success");
 455         return errCode;
 456 }
 457
 458 /*
 459  * usbvision_v4l2_close()
 460  *
 461  * This is part of Video 4 Linux API. The procedure
 462  * stops streaming and deallocates all buffers that were earlier
 463  * allocated in usbvision_v4l2_open().
 464  *
 465  */
 466 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 467 {
 468         struct video_device *dev = video_devdata(file);
 469         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 470
 471         PDEBUG(DBG_IO, "close");
 472         down(&usbvision->lock);
 473
 474         usbvision_audio_off(usbvision);
 475         usbvision_restart_isoc(usbvision);
 476         usbvision_stop_isoc(usbvision);
 477
 478         usbvision_decompress_free(usbvision);
 479         usbvision_frames_free(usbvision);
 480         usbvision_scratch_free(usbvision);
 481
 482         usbvision->user--;
 483
 484         if (PowerOnAtOpen) {
 485                 /* power off in a little while to avoid off/on every close/open short sequences */
 486                 usbvision_set_powerOffTimer(usbvision);
 487                 usbvision->initialized = 0;
 488         }
 489
 490         up(&usbvision->lock);
 491
 492         if (usbvision->remove_pending) {
 493                 info("%s: Final disconnect", __FUNCTION__);
 494                 usbvision_release(usbvision);
 495         }
 496
 497         PDEBUG(DBG_IO, "success");
 498
 499
 500         return 0;
 501 }
 502
 503
 504 /*
 505  * usbvision_ioctl()
 506  *
 507  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 508  *
 509  */
 510 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 511                                  unsigned int cmd, void *arg)
 512 {
 513         struct video_device *dev = video_devdata(file);
 514         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 515
 516         if (!USBVISION_IS_OPERATIONAL(usbvision))
 517                 return -EFAULT;
 518
 519         switch (cmd) {
 520
 521 #ifdef CONFIG_VIDEO_ADV_DEBUG
 522                 /* ioctls to allow direct acces to the NT100x registers */
 523                 case VIDIOC_INT_G_REGISTER:
 524                 {
 525                         struct v4l2_register *reg = arg;
 526                         int errCode;
 527
 528                         if (reg->i2c_id != 0)
 529                                 return -EINVAL;
 530                         /* NT100x has a 8-bit register space */
 531                         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 532                         if (errCode < 0) {
 533                                 err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
 534                         }
 535                         else {
 536                                 reg->val=(unsigned char)errCode;
 537                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
 538                                                         (unsigned int)reg->reg, reg->val);
 539                                 errCode = 0; // No error
 540                         }
 541                         return errCode;
 542                 }
 543                 case VIDIOC_INT_S_REGISTER:
 544                 {
 545                         struct v4l2_register *reg = arg;
 546                         int errCode;
 547
 548                         if (reg->i2c_id != 0)
 549                                 return -EINVAL;
 550                         if (!capable(CAP_SYS_ADMIN))
 551                                 return -EPERM;
 552                         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 553                         if (errCode < 0) {
 554                                 err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
 555                         }
 556                         else {
 557                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
 558                                                         (unsigned int)reg->reg, reg->val);
 559                                 errCode = 0;
 560                         }
 561                         return 0;
 562                 }
 563 #endif
 564                 case VIDIOC_QUERYCAP:
 565                 {
 566                         struct v4l2_capability *vc=arg;
 567
 568                         memset(vc, 0, sizeof(*vc));
 569                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 570                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 571                                 sizeof(vc->card));
 572                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 573                                 sizeof(vc->bus_info));
 574                         vc->version = USBVISION_DRIVER_VERSION;
 575                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 576                                 V4L2_CAP_AUDIO |
 577                                 V4L2_CAP_READWRITE |
 578                                 V4L2_CAP_STREAMING |
 579                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 580                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 581                         return 0;
 582                 }
 583                 case VIDIOC_ENUMINPUT:
 584                 {
 585                         struct v4l2_input *vi = arg;
 586                         int chan;
 587
 588                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 589                                 return -EINVAL;
 590                         if (usbvision->have_tuner) {
 591                                 chan = vi->index;
 592                         }
 593                         else {
 594                                 chan = vi->index + 1; //skip Television string
 595                         }
 596                         switch(chan) {
 597                                 case 0:
 598                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 599                                                 strcpy(vi->name, "White Video Input");
 600                                         }
 601                                         else {
 602                                                 strcpy(vi->name, "Television");
 603                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 604                                                 vi->audioset = 1;
 605                                                 vi->tuner = chan;
 606                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 607                                         }
 608                                         break;
 609                                 case 1:
 610                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 611                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 612                                                 strcpy(vi->name, "Green Video Input");
 613                                         }
 614                                         else {
 615                                                 strcpy(vi->name, "Composite Video Input");
 616                                         }
 617                                         vi->std = V4L2_STD_PAL;
 618                                         break;
 619                                 case 2:
 620                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 621                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 622                                                 strcpy(vi->name, "Yellow Video Input");
 623                                         }
 624                                         else {
 625                                         strcpy(vi->name, "S-Video Input");
 626                                         }
 627                                         vi->std = V4L2_STD_PAL;
 628                                         break;
 629                                 case 3:
 630                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 631                                         strcpy(vi->name, "Red Video Input");
 632                                         vi->std = V4L2_STD_PAL;
 633                                         break;
 634                         }
 635                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 636                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 637                         return 0;
 638                 }
 639                 case VIDIOC_ENUMSTD:
 640                 {
 641                         struct v4l2_standard *e = arg;
 642                         unsigned int i;
 643                         int ret;
 644
 645                         i = e->index;
 646                         if (i >= TVNORMS)
 647                                 return -EINVAL;
 648                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 649                                                        tvnorms[e->index].name);
 650                         e->index = i;
 651                         if (ret < 0)
 652                                 return ret;
 653                         return 0;
 654                 }
 655                 case VIDIOC_G_INPUT:
 656                 {
 657                         int *input = arg;
 658                         *input = usbvision->ctl_input;
 659                         return 0;
 660                 }
 661                 case VIDIOC_S_INPUT:
 662                 {
 663                         int *input = arg;
 664                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 665                                 return -EINVAL;
 666                         usbvision->ctl_input = *input;
 667
 668                         down(&usbvision->lock);
 669                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 670                         usbvision_set_input(usbvision);
 671                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 672                         up(&usbvision->lock);
 673                         return 0;
 674                 }
 675                 case VIDIOC_G_STD:
 676                 {
 677                         v4l2_std_id *id = arg;
 678
 679                         *id = usbvision->tvnorm->id;
 680
 681                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 682                         return 0;
 683                 }
 684                 case VIDIOC_S_STD:
 685                 {
 686                         v4l2_std_id *id = arg;
 687                         unsigned int i;
 688
 689                         for (i = 0; i < TVNORMS; i++)
 690                                 if (*id == tvnorms[i].id)
 691                                         break;
 692                         if (i == TVNORMS)
 693                                 for (i = 0; i < TVNORMS; i++)
 694                                         if (*id & tvnorms[i].id)
 695                                                 break;
 696                         if (i == TVNORMS)
 697                                 return -EINVAL;
 698
 699                         down(&usbvision->lock);
 700                         usbvision->tvnorm = &tvnorms[i];
 701
 702                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 703                                          &usbvision->tvnorm->id);
 704
 705                         up(&usbvision->lock);
 706
 707                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 708                         return 0;
 709                 }
 710                 case VIDIOC_G_TUNER:
 711                 {
 712                         struct v4l2_tuner *vt = arg;
 713
 714                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 715                                 return -EINVAL;
 716                         strcpy(vt->name, "Television");
 717                         /* Let clients fill in the remainder of this struct */
 718                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 719
 720                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 721                         return 0;
 722                 }
 723                 case VIDIOC_S_TUNER:
 724                 {
 725                         struct v4l2_tuner *vt = arg;
 726
 727                         // Only no or one tuner for now
 728                         if (!usbvision->have_tuner || vt->index)
 729                                 return -EINVAL;
 730                         /* let clients handle this */
 731                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 732
 733                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 734                         return 0;
 735                 }
 736                 case VIDIOC_G_FREQUENCY:
 737                 {
 738                         struct v4l2_frequency *freq = arg;
 739
 740                         freq->tuner = 0; // Only one tuner
 741                         freq->type = V4L2_TUNER_ANALOG_TV;
 742                         freq->frequency = usbvision->freq;
 743                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 744                         return 0;
 745                 }
 746                 case VIDIOC_S_FREQUENCY:
 747                 {
 748                         struct v4l2_frequency *freq = arg;
 749
 750                         // Only no or one tuner for now
 751                         if (!usbvision->have_tuner || freq->tuner)
 752                                 return -EINVAL;
 753
 754                         usbvision->freq = freq->frequency;
 755                         call_i2c_clients(usbvision, cmd, freq);
 756                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 757                         return 0;
 758                 }
 759                 case VIDIOC_G_AUDIO:
 760                 {
 761                         struct v4l2_audio *v = arg;
 762                         memset(v,0, sizeof(v));
 763                         strcpy(v->name, "TV");
 764                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 765                         return 0;
 766                 }
 767                 case VIDIOC_S_AUDIO:
 768                 {
 769                         struct v4l2_audio *v = arg;
 770                         if(v->index) {
 771                                 return -EINVAL;
 772                         }
 773                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 774                         return 0;
 775                 }
 776                 case VIDIOC_QUERYCTRL:
 777                 {
 778                         struct v4l2_queryctrl *ctrl = arg;
 779                         int id=ctrl->id;
 780
 781                         memset(ctrl,0,sizeof(*ctrl));
 782                         ctrl->id=id;
 783
 784                         call_i2c_clients(usbvision, cmd, arg);
 785
 786                         if (ctrl->type)
 787                                 return 0;
 788                         else
 789                                 return -EINVAL;
 790
 791                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 792                 }
 793                 case VIDIOC_G_CTRL:
 794                 {
 795                         struct v4l2_control *ctrl = arg;
 796                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 797                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 798                         return 0;
 799                 }
 800                 case VIDIOC_S_CTRL:
 801                 {
 802                         struct v4l2_control *ctrl = arg;
 803
 804                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 805                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 806                         return 0;
 807                 }
 808                 case VIDIOC_REQBUFS:
 809                 {
 810                         struct v4l2_requestbuffers *vr = arg;
 811                         int ret;
 812
 813                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 814
 815                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 816                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 817                            (vr->memory != V4L2_MEMORY_MMAP))
 818                                 return -EINVAL;
 819
 820                         if(usbvision->streaming == Stream_On) {
 821                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 822                                     return ret;
 823                         }
 824
 825                         usbvision_empty_framequeues(usbvision);
 826
 827                         usbvision->curFrame = NULL;
 828
 829                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 830                         return 0;
 831                 }
 832                 case VIDIOC_QUERYBUF:
 833                 {
 834                         struct v4l2_buffer *vb = arg;
 835                         struct usbvision_frame *frame;
 836
 837                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 838
 839                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 840                                 return -EINVAL;
 841                         }
 842                         if(vb->index>=USBVISION_NUMFRAMES)  {
 843                                 return -EINVAL;
 844                         }
 845                         // Updating the corresponding frame state
 846                         vb->flags = 0;
 847                         frame = &usbvision->frame[vb->index];
 848                         if(frame->grabstate >= FrameState_Ready)
 849                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 850                         if(frame->grabstate >= FrameState_Done)
 851                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 852                         if(frame->grabstate == FrameState_Unused)
 853                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 854                         vb->memory = V4L2_MEMORY_MMAP;
 855
 856                         vb->m.offset = vb->index*usbvision->max_frame_size;
 857
 858                         vb->memory = V4L2_MEMORY_MMAP;
 859                         vb->field = V4L2_FIELD_NONE;
 860                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 861                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 862                         vb->sequence = usbvision->frame[vb->index].sequence;
 863                         return 0;
 864                 }
 865                 case VIDIOC_QBUF:
 866                 {
 867                         struct v4l2_buffer *vb = arg;
 868                         struct usbvision_frame *frame;
 869                         unsigned long lock_flags;
 870
 871                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 872                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 873                                 return -EINVAL;
 874                         }
 875                         if(vb->index>=USBVISION_NUMFRAMES)  {
 876                                 return -EINVAL;
 877                         }
 878
 879                         frame = &usbvision->frame[vb->index];
 880
 881                         if (frame->grabstate != FrameState_Unused) {
 882                                 return -EAGAIN;
 883                         }
 884
 885                         /* Mark it as ready and enqueue frame */
 886                         frame->grabstate = FrameState_Ready;
 887                         frame->scanstate = ScanState_Scanning;
 888                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 889
 890                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 891
 892                         /* set v4l2_format index */
 893                         frame->v4l2_format = usbvision->palette;
 894
 895                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 896                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 897                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 898
 899                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 900                         return 0;
 901                 }
 902                 case VIDIOC_DQBUF:
 903                 {
 904                         struct v4l2_buffer *vb = arg;
 905                         int ret;
 906                         struct usbvision_frame *f;
 907                         unsigned long lock_flags;
 908
 909                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 910                                 return -EINVAL;
 911
 912                         if (list_empty(&(usbvision->outqueue))) {
 913                                 if (usbvision->streaming == Stream_Idle)
 914                                         return -EINVAL;
 915                                 ret = wait_event_interruptible
 916                                         (usbvision->wait_frame,
 917                                          !list_empty(&(usbvision->outqueue)));
 918                                 if (ret)
 919                                         return ret;
 920                         }
 921
 922                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 923                         f = list_entry(usbvision->outqueue.next,
 924                                        struct usbvision_frame, frame);
 925                         list_del(usbvision->outqueue.next);
 926                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 927
 928                         f->grabstate = FrameState_Unused;
 929
 930                         vb->memory = V4L2_MEMORY_MMAP;
 931                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 932                         vb->index = f->index;
 933                         vb->sequence = f->sequence;
 934                         vb->timestamp = f->timestamp;
 935                         vb->field = V4L2_FIELD_NONE;
 936                         vb->bytesused = f->scanlength;
 937
 938                         return 0;
 939                 }
 940                 case VIDIOC_STREAMON:
 941                 {
 942                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 943
 944                         usbvision->streaming = Stream_On;
 945
 946                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 947
 948                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 949
 950                         return 0;
 951                 }
 952                 case VIDIOC_STREAMOFF:
 953                 {
 954                         int *type = arg;
 955                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 956
 957                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 958                                 return -EINVAL;
 959
 960                         if(usbvision->streaming == Stream_On) {
 961                                 usbvision_stream_interrupt(usbvision);
 962                                 // Stop all video streamings
 963                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 964                         }
 965                         usbvision_empty_framequeues(usbvision);
 966
 967                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 968                         return 0;
 969                 }
 970                 case VIDIOC_ENUM_FMT:
 971                 {
 972                         struct v4l2_fmtdesc *vfd = arg;
 973
 974                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 975                                 return -EINVAL;
 976                         }
 977                         vfd->flags = 0;
 978                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 979                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 980                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 981                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 982                         return 0;
 983                 }
 984                 case VIDIOC_G_FMT:
 985                 {
 986                         struct v4l2_format *vf = arg;
 987
 988                         switch (vf->type) {
 989                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 990                                 {
 991                                         vf->fmt.pix.width = usbvision->curwidth;
 992                                         vf->fmt.pix.height = usbvision->curheight;
 993                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 994                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 995                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 996                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 997                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 998                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 999                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1000                                         return 0;
1001                                 }
1002                                 default:
1003                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
1004                                         return -EINVAL;
1005                         }
1006                         return 0;
1007                 }
1008                 case VIDIOC_TRY_FMT:
1009                 case VIDIOC_S_FMT:
1010                 {
1011                         struct v4l2_format *vf = arg;
1012                         int formatIdx,ret;
1013
1014                         switch(vf->type) {
1015                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1016                                 {
1017                                         /* Find requested format in available ones */
1018                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1019                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
1020                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1021                                                         break;
1022                                                 }
1023                                         }
1024                                         /* robustness */
1025                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1026                                                 return -EINVAL;
1027                                         }
1028                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1029                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1030
1031                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
1032                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1033
1034                                         if(cmd == VIDIOC_TRY_FMT) {
1035                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
1036                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1037                                                 return 0;
1038                                         }
1039
1040                                         /* stop io in case it is already in progress */
1041                                         if(usbvision->streaming == Stream_On) {
1042                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1043                                                         return ret;
1044                                         }
1045                                         usbvision_empty_framequeues(usbvision);
1046
1047                                         usbvision->curFrame = NULL;
1048
1049                                         // by now we are committed to the new data...
1050                                         down(&usbvision->lock);
1051                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1052                                         up(&usbvision->lock);
1053
1054                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1055                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1056                                         return 0;
1057                                 }
1058                                 default:
1059                                         return -EINVAL;
1060                         }
1061                 }
1062                 default:
1063                         return -ENOIOCTLCMD;
1064         }
1065         return 0;
1066 }
1067
1068 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1069                        unsigned int cmd, unsigned long arg)
1070 {
1071         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1072 }
1073
1074
1075 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1076                       size_t count, loff_t *ppos)
1077 {
1078         struct video_device *dev = video_devdata(file);
1079         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1080         int noblock = file->f_flags & O_NONBLOCK;
1081         unsigned long lock_flags;
1082
1083         int ret,i;
1084         struct usbvision_frame *frame;
1085
1086         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1087
1088         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1089                 return -EFAULT;
1090
1091         /* no stream is running, make it running ! */
1092         usbvision->streaming = Stream_On;
1093         call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1094
1095         /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1096         for(i=0;i<USBVISION_NUMFRAMES;i++) {
1097                 frame = &usbvision->frame[i];
1098                 if(frame->grabstate == FrameState_Unused) {
1099                         /* Mark it as ready and enqueue frame */
1100                         frame->grabstate = FrameState_Ready;
1101                         frame->scanstate = ScanState_Scanning;
1102                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1103
1104                         /* set v4l2_format index */
1105                         frame->v4l2_format = usbvision->palette;
1106
1107                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1108                         list_add_tail(&frame->frame, &usbvision->inqueue);
1109                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1110                 }
1111         }
1112
1113         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1114         if (list_empty(&(usbvision->outqueue))) {
1115                 if(noblock)
1116                         return -EAGAIN;
1117
1118                 ret = wait_event_interruptible
1119                         (usbvision->wait_frame,
1120                          !list_empty(&(usbvision->outqueue)));
1121                 if (ret)
1122                         return ret;
1123         }
1124
1125         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1126         frame = list_entry(usbvision->outqueue.next,
1127                            struct usbvision_frame, frame);
1128         list_del(usbvision->outqueue.next);
1129         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1130
1131         /* An error returns an empty frame */
1132         if (frame->grabstate == FrameState_Error) {
1133                 frame->bytes_read = 0;
1134                 return 0;
1135         }
1136
1137         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1138                        frame->index, frame->bytes_read, frame->scanlength);
1139
1140         /* copy bytes to user space; we allow for partials reads */
1141         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1142                 count = frame->scanlength - frame->bytes_read;
1143
1144         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1145                 return -EFAULT;
1146         }
1147
1148         frame->bytes_read += count;
1149         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1150                        (unsigned long)count, frame->bytes_read);
1151
1152         // For now, forget the frame if it has not been read in one shot.
1153 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1154                 frame->bytes_read = 0;
1155
1156                 /* Mark it as available to be used again. */
1157                 frame->grabstate = FrameState_Unused;
1158 /*      } */
1159
1160         return count;
1161 }
1162
1163 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1164 {
1165         unsigned long size = vma->vm_end - vma->vm_start,
1166                 start = vma->vm_start;
1167         void *pos;
1168         u32 i;
1169
1170         struct video_device *dev = video_devdata(file);
1171         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1172
1173         down(&usbvision->lock);
1174
1175         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1176                 up(&usbvision->lock);
1177                 return -EFAULT;
1178         }
1179
1180         if (!(vma->vm_flags & VM_WRITE) ||
1181             size != PAGE_ALIGN(usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel)) {
1182                 up(&usbvision->lock);
1183                 return -EINVAL;
1184         }
1185
1186         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1187                 if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1188                         break;
1189         }
1190         if (i == USBVISION_NUMFRAMES) {
1191                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1192                 up(&usbvision->lock);
1193                 return -EINVAL;
1194         }
1195
1196         /* VM_IO is eventually going to replace PageReserved altogether */
1197         vma->vm_flags |= VM_IO;
1198         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1199
1200         pos = usbvision->frame[i].data;
1201         while (size > 0) {
1202
1203                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1204                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1205                         up(&usbvision->lock);
1206                         return -EAGAIN;
1207                 }
1208                 start += PAGE_SIZE;
1209                 pos += PAGE_SIZE;
1210                 size -= PAGE_SIZE;
1211         }
1212
1213         up(&usbvision->lock);
1214         return 0;
1215 }
1216
1217
1218 /*
1219  * Here comes the stuff for radio on usbvision based devices
1220  *
1221  */
1222 static int usbvision_radio_open(struct inode *inode, struct file *file)
1223 {
1224         struct video_device *dev = video_devdata(file);
1225         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1226         struct v4l2_frequency freq;
1227         int errCode = 0;
1228
1229         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1230
1231         down(&usbvision->lock);
1232
1233         if (usbvision->user) {
1234                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1235                 errCode = -EBUSY;
1236         }
1237         else {
1238                 if(PowerOnAtOpen) {
1239                         usbvision_reset_powerOffTimer(usbvision);
1240                         if (usbvision->power == 0) {
1241                                 usbvision_power_on(usbvision);
1242                                 usbvision_init_i2c(usbvision);
1243                         }
1244                 }
1245
1246                 // If so far no errors then we shall start the radio
1247                 usbvision->radio = 1;
1248                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1249                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1250                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1251                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1252                 usbvision->user++;
1253         }
1254
1255         if (errCode) {
1256                 if (PowerOnAtOpen) {
1257                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1258                         usbvision_power_off(usbvision);
1259                         usbvision->initialized = 0;
1260                 }
1261         }
1262         up(&usbvision->lock);
1263         return errCode;
1264 }
1265
1266
1267 static int usbvision_radio_close(struct inode *inode, struct file *file)
1268 {
1269         struct video_device *dev = video_devdata(file);
1270         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1271         int errCode = 0;
1272
1273         PDEBUG(DBG_IO, "");
1274
1275         down(&usbvision->lock);
1276
1277         usbvision_audio_off(usbvision);
1278         usbvision->radio=0;
1279         usbvision->user--;
1280
1281         if (PowerOnAtOpen) {
1282                 usbvision_set_powerOffTimer(usbvision);
1283                 usbvision->initialized = 0;
1284         }
1285
1286         up(&usbvision->lock);
1287
1288         if (usbvision->remove_pending) {
1289                 info("%s: Final disconnect", __FUNCTION__);
1290                 usbvision_release(usbvision);
1291         }
1292
1293
1294         PDEBUG(DBG_IO, "success");
1295
1296         return errCode;
1297 }
1298
1299 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1300                                  unsigned int cmd, void *arg)
1301 {
1302         struct video_device *dev = video_devdata(file);
1303         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1304
1305         if (!USBVISION_IS_OPERATIONAL(usbvision))
1306                 return -EIO;
1307
1308         switch (cmd) {
1309                 case VIDIOC_QUERYCAP:
1310                 {
1311                         struct v4l2_capability *vc=arg;
1312
1313                         memset(vc, 0, sizeof(*vc));
1314                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1315                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1316                                 sizeof(vc->card));
1317                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1318                                 sizeof(vc->bus_info));
1319                         vc->version = USBVISION_DRIVER_VERSION;
1320                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1321                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1322                         return 0;
1323                 }
1324                 case VIDIOC_QUERYCTRL:
1325                 {
1326                         struct v4l2_queryctrl *ctrl = arg;
1327                         int id=ctrl->id;
1328
1329                         memset(ctrl,0,sizeof(*ctrl));
1330                         ctrl->id=id;
1331
1332                         call_i2c_clients(usbvision, cmd, arg);
1333                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1334
1335                         if (ctrl->type)
1336                                 return 0;
1337                         else
1338                                 return -EINVAL;
1339
1340                 }
1341                 case VIDIOC_G_CTRL:
1342                 {
1343                         struct v4l2_control *ctrl = arg;
1344
1345                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1346                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1347                         return 0;
1348                 }
1349                 case VIDIOC_S_CTRL:
1350                 {
1351                         struct v4l2_control *ctrl = arg;
1352
1353                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1354                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1355                         return 0;
1356                 }
1357                 case VIDIOC_G_TUNER:
1358                 {
1359                         struct v4l2_tuner *t = arg;
1360
1361                         if (t->index > 0)
1362                                 return -EINVAL;
1363
1364                         memset(t,0,sizeof(*t));
1365                         strcpy(t->name, "Radio");
1366                         t->type = V4L2_TUNER_RADIO;
1367
1368                         /* Let clients fill in the remainder of this struct */
1369                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1370                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1371                         return 0;
1372                 }
1373                 case VIDIOC_S_TUNER:
1374                 {
1375                         struct v4l2_tuner *vt = arg;
1376
1377                         // Only no or one tuner for now
1378                         if (!usbvision->have_tuner || vt->index)
1379                                 return -EINVAL;
1380                         /* let clients handle this */
1381                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1382
1383                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1384                         return 0;
1385                 }
1386                 case VIDIOC_G_AUDIO:
1387                 {
1388                         struct v4l2_audio *a = arg;
1389
1390                         memset(a,0,sizeof(*a));
1391                         strcpy(a->name,"Radio");
1392                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1393                         return 0;
1394                 }
1395                 case VIDIOC_S_AUDIO:
1396                 case VIDIOC_S_INPUT:
1397                 case VIDIOC_S_STD:
1398                 return 0;
1399
1400                 case VIDIOC_G_FREQUENCY:
1401                 {
1402                         struct v4l2_frequency *f = arg;
1403
1404                         memset(f,0,sizeof(*f));
1405
1406                         f->type = V4L2_TUNER_RADIO;
1407                         f->frequency = usbvision->freq;
1408                         call_i2c_clients(usbvision, cmd, f);
1409                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1410
1411                         return 0;
1412                 }
1413                 case VIDIOC_S_FREQUENCY:
1414                 {
1415                         struct v4l2_frequency *f = arg;
1416
1417                         if (f->tuner != 0)
1418                                 return -EINVAL;
1419                         usbvision->freq = f->frequency;
1420                         call_i2c_clients(usbvision, cmd, f);
1421                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1422
1423                         return 0;
1424                 }
1425                 default:
1426                 {
1427                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1428                         return -ENOIOCTLCMD;
1429                 }
1430         }
1431         return 0;
1432 }
1433
1434
1435 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1436                        unsigned int cmd, unsigned long arg)
1437 {
1438         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1439 }
1440
1441
1442 /*
1443  * Here comes the stuff for vbi on usbvision based devices
1444  *
1445  */
1446 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1447 {
1448         /* TODO */
1449         return -EINVAL;
1450
1451 }
1452
1453 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1454 {
1455         /* TODO */
1456         return -EINVAL;
1457 }
1458
1459 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1460                                  unsigned int cmd, void *arg)
1461 {
1462         /* TODO */
1463         return -EINVAL;
1464 }
1465
1466 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1467                        unsigned int cmd, unsigned long arg)
1468 {
1469         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1470 }
1471
1472
1473 //
1474 // Video registration stuff
1475 //
1476
1477 // Video template
1478 static const struct file_operations usbvision_fops = {
1479         .owner             = THIS_MODULE,
1480         .open           = usbvision_v4l2_open,
1481         .release        = usbvision_v4l2_close,
1482         .read           = usbvision_v4l2_read,
1483         .mmap           = usbvision_v4l2_mmap,
1484         .ioctl          = usbvision_v4l2_ioctl,
1485         .llseek         = no_llseek,
1486 };
1487 static struct video_device usbvision_video_template = {
1488         .owner             = THIS_MODULE,
1489         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1490         .hardware       = VID_HARDWARE_USBVISION,
1491         .fops           = &usbvision_fops,
1492         .name           = "usbvision-video",
1493         .release        = video_device_release,
1494         .minor          = -1,
1495 };
1496
1497
1498 // Radio template
1499 static const struct file_operations usbvision_radio_fops = {
1500         .owner             = THIS_MODULE,
1501         .open           = usbvision_radio_open,
1502         .release        = usbvision_radio_close,
1503         .ioctl          = usbvision_radio_ioctl,
1504         .llseek         = no_llseek,
1505 };
1506
1507 static struct video_device usbvision_radio_template=
1508 {
1509         .owner             = THIS_MODULE,
1510         .type           = VID_TYPE_TUNER,
1511         .hardware       = VID_HARDWARE_USBVISION,
1512         .fops           = &usbvision_radio_fops,
1513         .release        = video_device_release,
1514         .name           = "usbvision-radio",
1515         .minor          = -1,
1516 };
1517
1518
1519 // vbi template
1520 static const struct file_operations usbvision_vbi_fops = {
1521         .owner             = THIS_MODULE,
1522         .open           = usbvision_vbi_open,
1523         .release        = usbvision_vbi_close,
1524         .ioctl          = usbvision_vbi_ioctl,
1525         .llseek         = no_llseek,
1526 };
1527
1528 static struct video_device usbvision_vbi_template=
1529 {
1530         .owner             = THIS_MODULE,
1531         .type           = VID_TYPE_TUNER,
1532         .hardware       = VID_HARDWARE_USBVISION,
1533         .fops           = &usbvision_vbi_fops,
1534         .release        = video_device_release,
1535         .name           = "usbvision-vbi",
1536         .minor          = -1,
1537 };
1538
1539
1540 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1541                                         struct video_device *vdev_template,
1542                                         char *name)
1543 {
1544         struct usb_device *usb_dev = usbvision->dev;
1545         struct video_device *vdev;
1546
1547         if (usb_dev == NULL) {
1548                 err("%s: usbvision->dev is not set", __FUNCTION__);
1549                 return NULL;
1550         }
1551
1552         vdev = video_device_alloc();
1553         if (NULL == vdev) {
1554                 return NULL;
1555         }
1556         *vdev = *vdev_template;
1557 //      vdev->minor   = -1;
1558         vdev->dev     = &usb_dev->dev;
1559         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1560         video_set_drvdata(vdev, usbvision);
1561         return vdev;
1562 }
1563
1564 // unregister video4linux devices
1565 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1566 {
1567         // vbi Device:
1568         if (usbvision->vbi) {
1569                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1570                 if (usbvision->vbi->minor != -1) {
1571                         video_unregister_device(usbvision->vbi);
1572                 }
1573                 else {
1574                         video_device_release(usbvision->vbi);
1575                 }
1576                 usbvision->vbi = NULL;
1577         }
1578
1579         // Radio Device:
1580         if (usbvision->rdev) {
1581                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1582                 if (usbvision->rdev->minor != -1) {
1583                         video_unregister_device(usbvision->rdev);
1584                 }
1585                 else {
1586                         video_device_release(usbvision->rdev);
1587                 }
1588                 usbvision->rdev = NULL;
1589         }
1590
1591         // Video Device:
1592         if (usbvision->vdev) {
1593                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1594                 if (usbvision->vdev->minor != -1) {
1595                         video_unregister_device(usbvision->vdev);
1596                 }
1597                 else {
1598                         video_device_release(usbvision->vdev);
1599                 }
1600                 usbvision->vdev = NULL;
1601         }
1602 }
1603
1604 // register video4linux devices
1605 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1606 {
1607         // Video Device:
1608         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1609         if (usbvision->vdev == NULL) {
1610                 goto err_exit;
1611         }
1612         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1613                 goto err_exit;
1614         }
1615         info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
1616
1617         // Radio Device:
1618         if (usbvision_device_data[usbvision->DevModel].Radio) {
1619                 // usbvision has radio
1620                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1621                 if (usbvision->rdev == NULL) {
1622                         goto err_exit;
1623                 }
1624                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1625                         goto err_exit;
1626                 }
1627                 info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
1628         }
1629         // vbi Device:
1630         if (usbvision_device_data[usbvision->DevModel].vbi) {
1631                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1632                 if (usbvision->vdev == NULL) {
1633                         goto err_exit;
1634                 }
1635                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1636                         goto err_exit;
1637                 }
1638                 info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
1639         }
1640         // all done
1641         return 0;
1642
1643  err_exit:
1644         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1645         usbvision_unregister_video(usbvision);
1646         return -1;
1647 }
1648
1649 /*
1650  * usbvision_alloc()
1651  *
1652  * This code allocates the struct usb_usbvision. It is filled with default values.
1653  *
1654  * Returns NULL on error, a pointer to usb_usbvision else.
1655  *
1656  */
1657 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1658 {
1659         struct usb_usbvision *usbvision;
1660
1661         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1662                 goto err_exit;
1663         }
1664
1665         usbvision->dev = dev;
1666
1667         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1668
1669         // prepare control urb for control messages during interrupts
1670         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1671         if (usbvision->ctrlUrb == NULL) {
1672                 goto err_exit;
1673         }
1674         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1675         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1676
1677         usbvision_init_powerOffTimer(usbvision);
1678
1679         return usbvision;
1680
1681 err_exit:
1682         if (usbvision && usbvision->ctrlUrb) {
1683                 usb_free_urb(usbvision->ctrlUrb);
1684         }
1685         if (usbvision) {
1686                 kfree(usbvision);
1687         }
1688         return NULL;
1689 }
1690
1691 /*
1692  * usbvision_release()
1693  *
1694  * This code does final release of struct usb_usbvision. This happens
1695  * after the device is disconnected -and- all clients closed their files.
1696  *
1697  */
1698 static void usbvision_release(struct usb_usbvision *usbvision)
1699 {
1700         PDEBUG(DBG_PROBE, "");
1701
1702         down(&usbvision->lock);
1703
1704         usbvision_reset_powerOffTimer(usbvision);
1705
1706         usbvision->initialized = 0;
1707
1708         up(&usbvision->lock);
1709
1710         usbvision_remove_sysfs(usbvision->vdev);
1711         usbvision_unregister_video(usbvision);
1712
1713         if (usbvision->ctrlUrb) {
1714                 usb_free_urb(usbvision->ctrlUrb);
1715         }
1716
1717         kfree(usbvision);
1718
1719         PDEBUG(DBG_PROBE, "success");
1720 }
1721
1722
1723 /******************************** usb interface *****************************************/
1724
1725 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1726 {
1727         int model,i;
1728
1729         if (usbvision == NULL)
1730                 return;
1731
1732         model = usbvision->DevModel;
1733         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1734
1735         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
1736                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
1737         } else {
1738                 usbvision->Vin_Reg2_Preset = 0;
1739         }
1740
1741         for (i = 0; i < TVNORMS; i++)
1742                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1743                         break;
1744         if (i == TVNORMS)
1745                 i = 0;
1746         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1747
1748         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1749         usbvision->ctl_input = 0;
1750
1751         /* This should be here to make i2c clients to be able to register */
1752         usbvision_audio_off(usbvision); //first switch off audio
1753         if (!PowerOnAtOpen) {
1754                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1755                 usbvision_init_i2c(usbvision);
1756         }
1757 }
1758
1759 /*
1760  * usbvision_probe()
1761  *
1762  * This procedure queries device descriptor and accepts the interface
1763  * if it looks like USBVISION video device
1764  *
1765  */
1766 static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
1767 {
1768         struct usb_device *dev = interface_to_usbdev(intf);
1769         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1770         const struct usb_host_interface *interface;
1771         struct usb_usbvision *usbvision = NULL;
1772         const struct usb_endpoint_descriptor *endpoint;
1773         int model;
1774
1775         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1776                                         dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
1777         /* Is it an USBVISION video dev? */
1778         model = 0;
1779         for(model = 0; usbvision_device_data[model].idVendor; model++) {
1780                 if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
1781                         continue;
1782                 }
1783                 if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
1784                         continue;
1785                 }
1786
1787                 info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
1788                 break;
1789         }
1790
1791         if (usbvision_device_data[model].idVendor == 0) {
1792                 return -ENODEV; //no matching device
1793         }
1794         if (usbvision_device_data[model].Interface >= 0) {
1795                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1796         }
1797         else {
1798                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1799         }
1800         endpoint = &interface->endpoint[1].desc;
1801         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1802                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1803                 err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
1804                 return -ENODEV;
1805         }
1806         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1807                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1808                 return -ENODEV;
1809         }
1810
1811         usb_get_dev(dev);
1812
1813         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1814                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1815                 return -ENOMEM;
1816         }
1817         if (dev->descriptor.bNumConfigurations > 1) {
1818                 usbvision->bridgeType = BRIDGE_NT1004;
1819         }
1820         else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
1821                 usbvision->bridgeType = BRIDGE_NT1005;
1822         }
1823         else {
1824                 usbvision->bridgeType = BRIDGE_NT1003;
1825         }
1826         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1827
1828         down(&usbvision->lock);
1829
1830         usbvision->nr = usbvision_nr++;
1831
1832         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1833         if (usbvision->have_tuner) {
1834                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1835         }
1836
1837         usbvision->tuner_addr = ADDR_UNSET;
1838
1839         usbvision->DevModel = model;
1840         usbvision->remove_pending = 0;
1841         usbvision->iface = ifnum;
1842         usbvision->ifaceAltInactive = 0;
1843         usbvision->ifaceAltActive = 1;
1844         usbvision->video_endp = endpoint->bEndpointAddress;
1845         usbvision->isocPacketSize = 0;
1846         usbvision->usb_bandwidth = 0;
1847         usbvision->user = 0;
1848         usbvision->streaming = Stream_Off;
1849         usbvision_register_video(usbvision);
1850         usbvision_configure_video(usbvision);
1851         up(&usbvision->lock);
1852
1853
1854         usb_set_intfdata (intf, usbvision);
1855         usbvision_create_sysfs(usbvision->vdev);
1856
1857         PDEBUG(DBG_PROBE, "success");
1858         return 0;
1859 }
1860
1861
1862 /*
1863  * usbvision_disconnect()
1864  *
1865  * This procedure stops all driver activity, deallocates interface-private
1866  * structure (pointed by 'ptr') and after that driver should be removable
1867  * with no ill consequences.
1868  *
1869  */
1870 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1871 {
1872         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1873
1874         PDEBUG(DBG_PROBE, "");
1875
1876         if (usbvision == NULL) {
1877                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1878                 return;
1879         }
1880         usb_set_intfdata (intf, NULL);
1881
1882         down(&usbvision->lock);
1883
1884         // At this time we ask to cancel outstanding URBs
1885         usbvision_stop_isoc(usbvision);
1886
1887         if (usbvision->power) {
1888                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1889                 usbvision_power_off(usbvision);
1890         }
1891         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1892
1893         usb_put_dev(usbvision->dev);
1894         usbvision->dev = NULL;  // USB device is no more
1895
1896         up(&usbvision->lock);
1897
1898         if (usbvision->user) {
1899                 info("%s: In use, disconnect pending", __FUNCTION__);
1900                 wake_up_interruptible(&usbvision->wait_frame);
1901                 wake_up_interruptible(&usbvision->wait_stream);
1902         }
1903         else {
1904                 usbvision_release(usbvision);
1905         }
1906
1907         PDEBUG(DBG_PROBE, "success");
1908
1909 }
1910
1911 static struct usb_driver usbvision_driver = {
1912         .name           = "usbvision",
1913         .id_table       = usbvision_table,
1914         .probe          = usbvision_probe,
1915         .disconnect     = usbvision_disconnect
1916 };
1917
1918 /*
1919  * customdevice_process()
1920  *
1921  * This procedure preprocesses CustomDevice parameter if any
1922  *
1923  */
1924 static void customdevice_process(void)
1925 {
1926         usbvision_device_data[0]=usbvision_device_data[1];
1927         usbvision_table[0]=usbvision_table[1];
1928
1929         if(CustomDevice)
1930         {
1931                 char *parse=CustomDevice;
1932
1933                 PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
1934
1935                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
1936                 usbvision_device_data[0].idVendor;
1937                 usbvision_device_data[0].idProduct;
1938                 usbvision_device_data[0].Interface;
1939                 usbvision_device_data[0].Codec;
1940                 usbvision_device_data[0].VideoChannels;
1941                 usbvision_device_data[0].VideoNorm;
1942                 usbvision_device_data[0].AudioChannels;
1943                 usbvision_device_data[0].Radio;
1944                 usbvision_device_data[0].Tuner;
1945                 usbvision_device_data[0].TunerType;
1946                 usbvision_device_data[0].Vin_Reg1;
1947                 usbvision_device_data[0].Vin_Reg2;
1948                 usbvision_device_data[0].X_Offset;
1949                 usbvision_device_data[0].Y_Offset;
1950                 usbvision_device_data[0].Dvi_yuv;
1951                 usbvision_device_data[0].ModelString;
1952                 */
1953
1954                 rmspace(parse);
1955                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
1956
1957                 parse+=2;
1958                 sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
1959                 goto2next(parse);
1960                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
1961                 parse+=2;
1962                 sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
1963                 goto2next(parse);
1964                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
1965                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
1966                 goto2next(parse);
1967                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
1968                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
1969                 goto2next(parse);
1970                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
1971                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
1972                 goto2next(parse);
1973                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
1974
1975                 switch(*parse)
1976                 {
1977                         case 'P':
1978                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
1979                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
1980                                 break;
1981
1982                         case 'S':
1983                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
1984                                 usbvision_device_data[0].VideoNorm=V4L2_STD_SECAM;
1985                                 break;
1986
1987                         case 'N':
1988                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
1989                                 usbvision_device_data[0].VideoNorm=V4L2_STD_NTSC;
1990                                 break;
1991
1992                         default:
1993                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
1994                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
1995                                 break;
1996                 }
1997                 goto2next(parse);
1998
1999                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
2000                 goto2next(parse);
2001                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
2002                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
2003                 goto2next(parse);
2004                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
2005                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
2006                 goto2next(parse);
2007                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
2008                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
2009                 goto2next(parse);
2010                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
2011                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
2012                 goto2next(parse);
2013                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
2014                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
2015                 goto2next(parse);
2016                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
2017                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
2018                 goto2next(parse);
2019                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
2020                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
2021                 goto2next(parse);
2022                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
2023                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
2024                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
2025
2026                 //add to usbvision_table also
2027                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
2028                 usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
2029                 usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
2030
2031         }
2032 }
2033
2034
2035
2036 /*
2037  * usbvision_init()
2038  *
2039  * This code is run to initialize the driver.
2040  *
2041  */
2042 static int __init usbvision_init(void)
2043 {
2044         int errCode;
2045
2046         PDEBUG(DBG_PROBE, "");
2047
2048         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
2049         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
2050         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
2051         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
2052
2053         /* disable planar mode support unless compression enabled */
2054         if (isocMode != ISOC_MODE_COMPRESS ) {
2055                 // FIXME : not the right way to set supported flag
2056                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
2057                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
2058         }
2059
2060         customdevice_process();
2061
2062         errCode = usb_register(&usbvision_driver);
2063
2064         if (errCode == 0) {
2065                 info(DRIVER_DESC " : " USBVISION_VERSION_STRING);
2066                 PDEBUG(DBG_PROBE, "success");
2067         }
2068         return errCode;
2069 }
2070
2071 static void __exit usbvision_exit(void)
2072 {
2073  PDEBUG(DBG_PROBE, "");
2074
2075  usb_deregister(&usbvision_driver);
2076  PDEBUG(DBG_PROBE, "success");
2077 }
2078
2079 module_init(usbvision_init);
2080 module_exit(usbvision_exit);
2081
2082 /*
2083  * Overrides for Emacs so that we follow Linus's tabbing style.
2084  * ---------------------------------------------------------------------------
2085  * Local variables:
2086  * c-basic-offset: 8
2087  * End:
2088  */