git.oblomov.eu Git - linux-2.6/blob - 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 = to_video_device(cd);
 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 *class_dev, char *buf)
 218 {
 219         struct video_device *vdev = to_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 *class_dev, char *buf)
 226 {
 227         struct video_device *vdev = to_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         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 233         return sprintf(buf, "%d\n", ctrl.value >> 8);
 234 }
 235 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 236
 237 static ssize_t show_contrast(struct class_device *class_dev, char *buf)
 238 {
 239         struct video_device *vdev = to_video_device(class_dev);
 240         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 241         struct v4l2_control ctrl;
 242         ctrl.id = V4L2_CID_CONTRAST;
 243         ctrl.value = 0;
 244         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 245         return sprintf(buf, "%d\n", ctrl.value >> 8);
 246 }
 247 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 248
 249 static ssize_t show_brightness(struct class_device *class_dev, char *buf)
 250 {
 251         struct video_device *vdev = to_video_device(class_dev);
 252         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 253         struct v4l2_control ctrl;
 254         ctrl.id = V4L2_CID_BRIGHTNESS;
 255         ctrl.value = 0;
 256         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 257         return sprintf(buf, "%d\n", ctrl.value >> 8);
 258 }
 259 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 260
 261 static ssize_t show_saturation(struct class_device *class_dev, char *buf)
 262 {
 263         struct video_device *vdev = to_video_device(class_dev);
 264         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 265         struct v4l2_control ctrl;
 266         ctrl.id = V4L2_CID_SATURATION;
 267         ctrl.value = 0;
 268         call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 269         return sprintf(buf, "%d\n", ctrl.value >> 8);
 270 }
 271 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 272
 273 static ssize_t show_streaming(struct class_device *class_dev, char *buf)
 274 {
 275         struct video_device *vdev = to_video_device(class_dev);
 276         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 277         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 278 }
 279 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 280
 281 static ssize_t show_compression(struct class_device *class_dev, char *buf)
 282 {
 283         struct video_device *vdev = to_video_device(class_dev);
 284         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 285         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 286 }
 287 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 288
 289 static ssize_t show_device_bridge(struct class_device *class_dev, char *buf)
 290 {
 291         struct video_device *vdev = to_video_device(class_dev);
 292         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 293         return sprintf(buf, "%d\n", usbvision->bridgeType);
 294 }
 295 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 296
 297 static void usbvision_create_sysfs(struct video_device *vdev)
 298 {
 299         int res;
 300         if (vdev) {
 301                 res=video_device_create_file(vdev, &class_device_attr_version);
 302                 res=video_device_create_file(vdev, &class_device_attr_model);
 303                 res=video_device_create_file(vdev, &class_device_attr_hue);
 304                 res=video_device_create_file(vdev, &class_device_attr_contrast);
 305                 res=video_device_create_file(vdev, &class_device_attr_brightness);
 306                 res=video_device_create_file(vdev, &class_device_attr_saturation);
 307                 res=video_device_create_file(vdev, &class_device_attr_streaming);
 308                 res=video_device_create_file(vdev, &class_device_attr_compression);
 309                 res=video_device_create_file(vdev, &class_device_attr_bridge);
 310         }
 311 }
 312
 313 static void usbvision_remove_sysfs(struct video_device *vdev)
 314 {
 315         if (vdev) {
 316                 video_device_remove_file(vdev, &class_device_attr_version);
 317                 video_device_remove_file(vdev, &class_device_attr_model);
 318                 video_device_remove_file(vdev, &class_device_attr_hue);
 319                 video_device_remove_file(vdev, &class_device_attr_contrast);
 320                 video_device_remove_file(vdev, &class_device_attr_brightness);
 321                 video_device_remove_file(vdev, &class_device_attr_saturation);
 322                 video_device_remove_file(vdev, &class_device_attr_streaming);
 323                 video_device_remove_file(vdev, &class_device_attr_compression);
 324                 video_device_remove_file(vdev, &class_device_attr_bridge);
 325         }
 326 }
 327
 328
 329 /*
 330  * usbvision_open()
 331  *
 332  * This is part of Video 4 Linux API. The driver can be opened by one
 333  * client only (checks internal counter 'usbvision->user'). The procedure
 334  * then allocates buffers needed for video processing.
 335  *
 336  */
 337 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 338 {
 339         struct video_device *dev = video_devdata(file);
 340         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 341         int errCode = 0;
 342
 343         PDEBUG(DBG_IO, "open");
 344
 345
 346         usbvision_reset_powerOffTimer(usbvision);
 347
 348         if (usbvision->user)
 349                 errCode = -EBUSY;
 350         else {
 351                 /* Allocate memory for the frame buffers */
 352                 errCode = usbvision_frames_alloc(usbvision);
 353                 if(!errCode) {
 354                         /* Allocate memory for the scratch ring buffer */
 355                         errCode = usbvision_scratch_alloc(usbvision);
 356                         if(!errCode) {
 357                                 /* Allocate memory for the USB S buffers */
 358                                 errCode = usbvision_sbuf_alloc(usbvision);
 359                                 if ((!errCode) && (usbvision->isocMode==ISOC_MODE_COMPRESS)) {
 360                                         /* Allocate intermediate decompression buffers only if needed */
 361                                         errCode = usbvision_decompress_alloc(usbvision);
 362                                 }
 363                         }
 364                 }
 365                 if (errCode) {
 366                         /* Deallocate all buffers if trouble */
 367                         usbvision_frames_free(usbvision);
 368                         usbvision_scratch_free(usbvision);
 369                         usbvision_sbuf_free(usbvision);
 370                         usbvision_decompress_free(usbvision);
 371                 }
 372         }
 373
 374         /* If so far no errors then we shall start the camera */
 375         if (!errCode) {
 376                 down(&usbvision->lock);
 377                 if (usbvision->power == 0) {
 378                         usbvision_power_on(usbvision);
 379                         usbvision_init_i2c(usbvision);
 380                 }
 381
 382                 /* Send init sequence only once, it's large! */
 383                 if (!usbvision->initialized) {
 384                         int setup_ok = 0;
 385                         setup_ok = usbvision_setup(usbvision,isocMode);
 386                         if (setup_ok)
 387                                 usbvision->initialized = 1;
 388                         else
 389                                 errCode = -EBUSY;
 390                 }
 391
 392                 if (!errCode) {
 393                         usbvision_begin_streaming(usbvision);
 394                         errCode = usbvision_init_isoc(usbvision);
 395                         /* device needs to be initialized before isoc transfer */
 396                         usbvision_muxsel(usbvision,0);
 397                         usbvision->user++;
 398                 }
 399                 else {
 400                         if (PowerOnAtOpen) {
 401                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
 402                                 usbvision_power_off(usbvision);
 403                                 usbvision->initialized = 0;
 404                         }
 405                 }
 406                 up(&usbvision->lock);
 407         }
 408
 409         if (errCode) {
 410         }
 411
 412         /* prepare queues */
 413         usbvision_empty_framequeues(usbvision);
 414
 415         PDEBUG(DBG_IO, "success");
 416         return errCode;
 417 }
 418
 419 /*
 420  * usbvision_v4l2_close()
 421  *
 422  * This is part of Video 4 Linux API. The procedure
 423  * stops streaming and deallocates all buffers that were earlier
 424  * allocated in usbvision_v4l2_open().
 425  *
 426  */
 427 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 428 {
 429         struct video_device *dev = video_devdata(file);
 430         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 431
 432         PDEBUG(DBG_IO, "close");
 433         down(&usbvision->lock);
 434
 435         usbvision_audio_off(usbvision);
 436         usbvision_restart_isoc(usbvision);
 437         usbvision_stop_isoc(usbvision);
 438
 439         usbvision_decompress_free(usbvision);
 440         usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size);
 441         usbvision_scratch_free(usbvision);
 442         usbvision_sbuf_free(usbvision);
 443
 444         usbvision->user--;
 445
 446         if (PowerOnAtOpen) {
 447                 /* power off in a little while to avoid off/on every close/open short sequences */
 448                 usbvision_set_powerOffTimer(usbvision);
 449                 usbvision->initialized = 0;
 450         }
 451
 452         up(&usbvision->lock);
 453
 454         if (usbvision->remove_pending) {
 455                 info("%s: Final disconnect", __FUNCTION__);
 456                 usbvision_release(usbvision);
 457         }
 458
 459         PDEBUG(DBG_IO, "success");
 460
 461
 462         return 0;
 463 }
 464
 465
 466 /*
 467  * usbvision_ioctl()
 468  *
 469  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 470  *
 471  */
 472 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 473                                  unsigned int cmd, void *arg)
 474 {
 475         struct video_device *dev = video_devdata(file);
 476         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 477
 478         if (!USBVISION_IS_OPERATIONAL(usbvision))
 479                 return -EFAULT;
 480
 481         switch (cmd) {
 482
 483 #ifdef CONFIG_VIDEO_ADV_DEBUG
 484                 /* ioctls to allow direct acces to the NT100x registers */
 485                 case VIDIOC_INT_G_REGISTER:
 486                 {
 487                         struct v4l2_register *reg = arg;
 488                         int errCode;
 489
 490                         if (reg->i2c_id != 0)
 491                                 return -EINVAL;
 492                         /* NT100x has a 8-bit register space */
 493                         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 494                         if (errCode < 0) {
 495                                 err("%s: VIDIOC_INT_G_REGISTER failed: error %d", __FUNCTION__, errCode);
 496                         }
 497                         else {
 498                                 reg->val=(unsigned char)errCode;
 499                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_G_REGISTER reg=0x%02X, value=0x%02X",
 500                                                         (unsigned int)reg->reg, reg->val);
 501                                 errCode = 0; // No error
 502                         }
 503                         return errCode;
 504                 }
 505                 case VIDIOC_INT_S_REGISTER:
 506                 {
 507                         struct v4l2_register *reg = arg;
 508                         int errCode;
 509
 510                         if (reg->i2c_id != 0)
 511                                 return -EINVAL;
 512                         if (!capable(CAP_SYS_ADMIN))
 513                                 return -EPERM;
 514                         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 515                         if (errCode < 0) {
 516                                 err("%s: VIDIOC_INT_S_REGISTER failed: error %d", __FUNCTION__, errCode);
 517                         }
 518                         else {
 519                                 PDEBUG(DBG_IOCTL, "VIDIOC_INT_S_REGISTER reg=0x%02X, value=0x%02X",
 520                                                         (unsigned int)reg->reg, reg->val);
 521                                 errCode = 0;
 522                         }
 523                         return 0;
 524                 }
 525 #endif
 526                 case VIDIOC_QUERYCAP:
 527                 {
 528                         struct v4l2_capability *vc=arg;
 529
 530                         memset(vc, 0, sizeof(*vc));
 531                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 532                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 533                                 sizeof(vc->card));
 534                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 535                                 sizeof(vc->bus_info));
 536                         vc->version = USBVISION_DRIVER_VERSION;
 537                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 538                                 V4L2_CAP_AUDIO |
 539                                 V4L2_CAP_READWRITE |
 540                                 V4L2_CAP_STREAMING |
 541                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 542                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 543                         return 0;
 544                 }
 545                 case VIDIOC_ENUMINPUT:
 546                 {
 547                         struct v4l2_input *vi = arg;
 548                         int chan;
 549
 550                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 551                                 return -EINVAL;
 552                         if (usbvision->have_tuner) {
 553                                 chan = vi->index;
 554                         }
 555                         else {
 556                                 chan = vi->index + 1; //skip Television string
 557                         }
 558                         switch(chan) {
 559                                 case 0:
 560                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 561                                                 strcpy(vi->name, "White Video Input");
 562                                         }
 563                                         else {
 564                                                 strcpy(vi->name, "Television");
 565                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 566                                                 vi->audioset = 1;
 567                                                 vi->tuner = chan;
 568                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 569                                         }
 570                                         break;
 571                                 case 1:
 572                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 573                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 574                                                 strcpy(vi->name, "Green Video Input");
 575                                         }
 576                                         else {
 577                                                 strcpy(vi->name, "Composite Video Input");
 578                                         }
 579                                         vi->std = V4L2_STD_PAL;
 580                                         break;
 581                                 case 2:
 582                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 583                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 584                                                 strcpy(vi->name, "Yellow Video Input");
 585                                         }
 586                                         else {
 587                                         strcpy(vi->name, "S-Video Input");
 588                                         }
 589                                         vi->std = V4L2_STD_PAL;
 590                                         break;
 591                                 case 3:
 592                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 593                                         strcpy(vi->name, "Red Video Input");
 594                                         vi->std = V4L2_STD_PAL;
 595                                         break;
 596                         }
 597                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 598                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 599                         return 0;
 600                 }
 601                 case VIDIOC_ENUMSTD:
 602                 {
 603                         struct v4l2_standard *e = arg;
 604                         unsigned int i;
 605                         int ret;
 606
 607                         i = e->index;
 608                         if (i >= TVNORMS)
 609                                 return -EINVAL;
 610                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 611                                                        tvnorms[e->index].name);
 612                         e->index = i;
 613                         if (ret < 0)
 614                                 return ret;
 615                         return 0;
 616                 }
 617                 case VIDIOC_G_INPUT:
 618                 {
 619                         int *input = arg;
 620                         *input = usbvision->ctl_input;
 621                         return 0;
 622                 }
 623                 case VIDIOC_S_INPUT:
 624                 {
 625                         int *input = arg;
 626                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 627                                 return -EINVAL;
 628                         usbvision->ctl_input = *input;
 629
 630                         down(&usbvision->lock);
 631                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 632                         usbvision_set_input(usbvision);
 633                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 634                         up(&usbvision->lock);
 635                         return 0;
 636                 }
 637                 case VIDIOC_G_STD:
 638                 {
 639                         v4l2_std_id *id = arg;
 640
 641                         *id = usbvision->tvnorm->id;
 642
 643                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 644                         return 0;
 645                 }
 646                 case VIDIOC_S_STD:
 647                 {
 648                         v4l2_std_id *id = arg;
 649                         unsigned int i;
 650
 651                         for (i = 0; i < TVNORMS; i++)
 652                                 if (*id == tvnorms[i].id)
 653                                         break;
 654                         if (i == TVNORMS)
 655                                 for (i = 0; i < TVNORMS; i++)
 656                                         if (*id & tvnorms[i].id)
 657                                                 break;
 658                         if (i == TVNORMS)
 659                                 return -EINVAL;
 660
 661                         down(&usbvision->lock);
 662                         usbvision->tvnorm = &tvnorms[i];
 663
 664                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 665                                          &usbvision->tvnorm->id);
 666
 667                         up(&usbvision->lock);
 668
 669                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 670                         return 0;
 671                 }
 672                 case VIDIOC_G_TUNER:
 673                 {
 674                         struct v4l2_tuner *vt = arg;
 675
 676                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 677                                 return -EINVAL;
 678                         strcpy(vt->name, "Television");
 679                         /* Let clients fill in the remainder of this struct */
 680                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 681
 682                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 683                         return 0;
 684                 }
 685                 case VIDIOC_S_TUNER:
 686                 {
 687                         struct v4l2_tuner *vt = arg;
 688
 689                         // Only no or one tuner for now
 690                         if (!usbvision->have_tuner || vt->index)
 691                                 return -EINVAL;
 692                         /* let clients handle this */
 693                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 694
 695                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 696                         return 0;
 697                 }
 698                 case VIDIOC_G_FREQUENCY:
 699                 {
 700                         struct v4l2_frequency *freq = arg;
 701
 702                         freq->tuner = 0; // Only one tuner
 703                         freq->type = V4L2_TUNER_ANALOG_TV;
 704                         freq->frequency = usbvision->freq;
 705                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 706                         return 0;
 707                 }
 708                 case VIDIOC_S_FREQUENCY:
 709                 {
 710                         struct v4l2_frequency *freq = arg;
 711
 712                         // Only no or one tuner for now
 713                         if (!usbvision->have_tuner || freq->tuner)
 714                                 return -EINVAL;
 715
 716                         usbvision->freq = freq->frequency;
 717                         call_i2c_clients(usbvision, cmd, freq);
 718                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 719                         return 0;
 720                 }
 721                 case VIDIOC_G_AUDIO:
 722                 {
 723                         struct v4l2_audio *v = arg;
 724                         memset(v,0, sizeof(v));
 725                         strcpy(v->name, "TV");
 726                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 727                         return 0;
 728                 }
 729                 case VIDIOC_S_AUDIO:
 730                 {
 731                         struct v4l2_audio *v = arg;
 732                         if(v->index) {
 733                                 return -EINVAL;
 734                         }
 735                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 736                         return 0;
 737                 }
 738                 case VIDIOC_QUERYCTRL:
 739                 {
 740                         struct v4l2_queryctrl *ctrl = arg;
 741                         int id=ctrl->id;
 742
 743                         memset(ctrl,0,sizeof(*ctrl));
 744                         ctrl->id=id;
 745
 746                         call_i2c_clients(usbvision, cmd, arg);
 747
 748                         if (ctrl->type)
 749                                 return 0;
 750                         else
 751                                 return -EINVAL;
 752
 753                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 754                 }
 755                 case VIDIOC_G_CTRL:
 756                 {
 757                         struct v4l2_control *ctrl = arg;
 758                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 759                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 760                         return 0;
 761                 }
 762                 case VIDIOC_S_CTRL:
 763                 {
 764                         struct v4l2_control *ctrl = arg;
 765
 766                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 767                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 768                         return 0;
 769                 }
 770                 case VIDIOC_REQBUFS:
 771                 {
 772                         struct v4l2_requestbuffers *vr = arg;
 773                         int ret;
 774
 775                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 776
 777                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 778                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 779                            (vr->memory != V4L2_MEMORY_MMAP))
 780                                 return -EINVAL;
 781
 782                         if(usbvision->streaming == Stream_On) {
 783                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 784                                     return ret;
 785                         }
 786
 787                         usbvision_empty_framequeues(usbvision);
 788
 789                         usbvision->curFrame = NULL;
 790
 791                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 792                         return 0;
 793                 }
 794                 case VIDIOC_QUERYBUF:
 795                 {
 796                         struct v4l2_buffer *vb = arg;
 797                         struct usbvision_frame *frame;
 798
 799                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 800
 801                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 802                                 return -EINVAL;
 803                         }
 804                         if(vb->index>=USBVISION_NUMFRAMES)  {
 805                                 return -EINVAL;
 806                         }
 807                         // Updating the corresponding frame state
 808                         vb->flags = 0;
 809                         frame = &usbvision->frame[vb->index];
 810                         if(frame->grabstate >= FrameState_Ready)
 811                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 812                         if(frame->grabstate >= FrameState_Done)
 813                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 814                         if(frame->grabstate == FrameState_Unused)
 815                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 816                         vb->memory = V4L2_MEMORY_MMAP;
 817
 818                         vb->m.offset = vb->index*usbvision->max_frame_size;
 819
 820                         vb->memory = V4L2_MEMORY_MMAP;
 821                         vb->field = V4L2_FIELD_NONE;
 822                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 823                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 824                         vb->sequence = usbvision->frame[vb->index].sequence;
 825                         return 0;
 826                 }
 827                 case VIDIOC_QBUF:
 828                 {
 829                         struct v4l2_buffer *vb = arg;
 830                         struct usbvision_frame *frame;
 831                         unsigned long lock_flags;
 832
 833                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 834                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 835                                 return -EINVAL;
 836                         }
 837                         if(vb->index>=USBVISION_NUMFRAMES)  {
 838                                 return -EINVAL;
 839                         }
 840
 841                         frame = &usbvision->frame[vb->index];
 842
 843                         if (frame->grabstate != FrameState_Unused) {
 844                                 return -EAGAIN;
 845                         }
 846
 847                         /* Mark it as ready and enqueue frame */
 848                         frame->grabstate = FrameState_Ready;
 849                         frame->scanstate = ScanState_Scanning;
 850                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 851
 852                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 853
 854                         /* set v4l2_format index */
 855                         frame->v4l2_format = usbvision->palette;
 856
 857                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 858                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 859                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 860
 861                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 862                         return 0;
 863                 }
 864                 case VIDIOC_DQBUF:
 865                 {
 866                         struct v4l2_buffer *vb = arg;
 867                         int ret;
 868                         struct usbvision_frame *f;
 869                         unsigned long lock_flags;
 870
 871                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 872                                 return -EINVAL;
 873
 874                         if (list_empty(&(usbvision->outqueue))) {
 875                                 if (usbvision->streaming == Stream_Idle)
 876                                         return -EINVAL;
 877                                 ret = wait_event_interruptible
 878                                         (usbvision->wait_frame,
 879                                          !list_empty(&(usbvision->outqueue)));
 880                                 if (ret)
 881                                         return ret;
 882                         }
 883
 884                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 885                         f = list_entry(usbvision->outqueue.next,
 886                                        struct usbvision_frame, frame);
 887                         list_del(usbvision->outqueue.next);
 888                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 889
 890                         f->grabstate = FrameState_Unused;
 891
 892                         vb->memory = V4L2_MEMORY_MMAP;
 893                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 894                         vb->index = f->index;
 895                         vb->sequence = f->sequence;
 896                         vb->timestamp = f->timestamp;
 897                         vb->field = V4L2_FIELD_NONE;
 898                         vb->bytesused = f->scanlength;
 899
 900                         return 0;
 901                 }
 902                 case VIDIOC_STREAMON:
 903                 {
 904                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 905
 906                         usbvision->streaming = Stream_On;
 907
 908                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 909
 910                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 911
 912                         return 0;
 913                 }
 914                 case VIDIOC_STREAMOFF:
 915                 {
 916                         int *type = arg;
 917                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 918
 919                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 920                                 return -EINVAL;
 921
 922                         if(usbvision->streaming == Stream_On) {
 923                                 usbvision_stream_interrupt(usbvision);
 924                                 // Stop all video streamings
 925                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 926                         }
 927                         usbvision_empty_framequeues(usbvision);
 928
 929                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 930                         return 0;
 931                 }
 932                 case VIDIOC_ENUM_FMT:
 933                 {
 934                         struct v4l2_fmtdesc *vfd = arg;
 935
 936                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 937                                 return -EINVAL;
 938                         }
 939                         vfd->flags = 0;
 940                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 941                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 942                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 943                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 944                         return 0;
 945                 }
 946                 case VIDIOC_G_FMT:
 947                 {
 948                         struct v4l2_format *vf = arg;
 949
 950                         switch (vf->type) {
 951                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 952                                 {
 953                                         vf->fmt.pix.width = usbvision->curwidth;
 954                                         vf->fmt.pix.height = usbvision->curheight;
 955                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 956                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 957                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 958                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 959                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 960                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 961                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
 962                                         return 0;
 963                                 }
 964                                 default:
 965                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
 966                                         return -EINVAL;
 967                         }
 968                         return 0;
 969                 }
 970                 case VIDIOC_TRY_FMT:
 971                 case VIDIOC_S_FMT:
 972                 {
 973                         struct v4l2_format *vf = arg;
 974                         int formatIdx,ret;
 975
 976                         switch(vf->type) {
 977                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 978                                 {
 979                                         /* Find requested format in available ones */
 980                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 981                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
 982                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 983                                                         break;
 984                                                 }
 985                                         }
 986                                         /* robustness */
 987                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 988                                                 return -EINVAL;
 989                                         }
 990                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 991                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 992
 993                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
 994                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 995
 996                                         if(cmd == VIDIOC_TRY_FMT) {
 997                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
 998                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
 999                                                 return 0;
1000                                         }
1001
1002                                         /* stop io in case it is already in progress */
1003                                         if(usbvision->streaming == Stream_On) {
1004                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1005                                                         return ret;
1006                                         }
1007                                         usbvision_empty_framequeues(usbvision);
1008
1009                                         usbvision->curFrame = NULL;
1010
1011                                         // by now we are committed to the new data...
1012                                         down(&usbvision->lock);
1013                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1014                                         up(&usbvision->lock);
1015
1016                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1017                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1018                                         return 0;
1019                                 }
1020                                 default:
1021                                         return -EINVAL;
1022                         }
1023                 }
1024                 default:
1025                         return -ENOIOCTLCMD;
1026         }
1027         return 0;
1028 }
1029
1030 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1031                        unsigned int cmd, unsigned long arg)
1032 {
1033         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1034 }
1035
1036
1037 static ssize_t usbvision_v4l2_read(struct file *file, char *buf,
1038                       size_t count, loff_t *ppos)
1039 {
1040         struct video_device *dev = video_devdata(file);
1041         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1042         int noblock = file->f_flags & O_NONBLOCK;
1043         unsigned long lock_flags;
1044
1045         int frmx = -1;
1046         int ret,i;
1047         struct usbvision_frame *frame;
1048
1049         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1050
1051         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1052                 return -EFAULT;
1053
1054         /* no stream is running, make it running ! */
1055         usbvision->streaming = Stream_On;
1056         call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1057
1058         /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1059         for(i=0;i<USBVISION_NUMFRAMES;i++) {
1060                 frame = &usbvision->frame[i];
1061                 if(frame->grabstate == FrameState_Unused) {
1062                         /* Mark it as ready and enqueue frame */
1063                         frame->grabstate = FrameState_Ready;
1064                         frame->scanstate = ScanState_Scanning;
1065                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1066
1067                         /* set v4l2_format index */
1068                         frame->v4l2_format = usbvision->palette;
1069
1070                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1071                         list_add_tail(&frame->frame, &usbvision->inqueue);
1072                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1073                 }
1074         }
1075
1076         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1077         if (list_empty(&(usbvision->outqueue))) {
1078                 if(noblock)
1079                         return -EAGAIN;
1080
1081                 ret = wait_event_interruptible
1082                         (usbvision->wait_frame,
1083                          !list_empty(&(usbvision->outqueue)));
1084                 if (ret)
1085                         return ret;
1086         }
1087
1088         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1089         frame = list_entry(usbvision->outqueue.next,
1090                            struct usbvision_frame, frame);
1091         list_del(usbvision->outqueue.next);
1092         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1093
1094         /* An error returns an empty frame */
1095         if (frame->grabstate == FrameState_Error) {
1096                 frame->bytes_read = 0;
1097                 return 0;
1098         }
1099
1100         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1101                        frame->index, frame->bytes_read, frame->scanlength);
1102
1103         /* copy bytes to user space; we allow for partials reads */
1104         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1105                 count = frame->scanlength - frame->bytes_read;
1106
1107         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1108                 return -EFAULT;
1109         }
1110
1111         frame->bytes_read += count;
1112         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1113                        (unsigned long)count, frame->bytes_read);
1114
1115         // For now, forget the frame if it has not been read in one shot.
1116 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1117                 frame->bytes_read = 0;
1118
1119                 /* Mark it as available to be used again. */
1120                 usbvision->frame[frmx].grabstate = FrameState_Unused;
1121 /*      } */
1122
1123         return count;
1124 }
1125
1126 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1127 {
1128         unsigned long size = vma->vm_end - vma->vm_start,
1129                 start = vma->vm_start;
1130         void *pos;
1131         u32 i;
1132
1133         struct video_device *dev = video_devdata(file);
1134         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1135
1136         down(&usbvision->lock);
1137
1138         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1139                 up(&usbvision->lock);
1140                 return -EFAULT;
1141         }
1142
1143         if (!(vma->vm_flags & VM_WRITE) ||
1144             size != PAGE_ALIGN(usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel)) {
1145                 up(&usbvision->lock);
1146                 return -EINVAL;
1147         }
1148
1149         for (i = 0; i < USBVISION_NUMFRAMES; i++) {
1150                 if (((usbvision->max_frame_size*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1151                         break;
1152         }
1153         if (i == USBVISION_NUMFRAMES) {
1154                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1155                 up(&usbvision->lock);
1156                 return -EINVAL;
1157         }
1158
1159         /* VM_IO is eventually going to replace PageReserved altogether */
1160         vma->vm_flags |= VM_IO;
1161         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1162
1163         pos = usbvision->frame[i].data;
1164         while (size > 0) {
1165
1166                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1167                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1168                         up(&usbvision->lock);
1169                         return -EAGAIN;
1170                 }
1171                 start += PAGE_SIZE;
1172                 pos += PAGE_SIZE;
1173                 size -= PAGE_SIZE;
1174         }
1175
1176         up(&usbvision->lock);
1177         return 0;
1178 }
1179
1180
1181 /*
1182  * Here comes the stuff for radio on usbvision based devices
1183  *
1184  */
1185 static int usbvision_radio_open(struct inode *inode, struct file *file)
1186 {
1187         struct video_device *dev = video_devdata(file);
1188         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1189         struct v4l2_frequency freq;
1190         int errCode = 0;
1191
1192         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1193
1194         down(&usbvision->lock);
1195
1196         if (usbvision->user) {
1197                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1198                 errCode = -EBUSY;
1199         }
1200         else {
1201                 if(PowerOnAtOpen) {
1202                         usbvision_reset_powerOffTimer(usbvision);
1203                         if (usbvision->power == 0) {
1204                                 usbvision_power_on(usbvision);
1205                                 usbvision_init_i2c(usbvision);
1206                         }
1207                 }
1208
1209                 // If so far no errors then we shall start the radio
1210                 usbvision->radio = 1;
1211                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1212                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1213                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1214                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1215                 usbvision->user++;
1216         }
1217
1218         if (errCode) {
1219                 if (PowerOnAtOpen) {
1220                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1221                         usbvision_power_off(usbvision);
1222                         usbvision->initialized = 0;
1223                 }
1224         }
1225         up(&usbvision->lock);
1226         return errCode;
1227 }
1228
1229
1230 static int usbvision_radio_close(struct inode *inode, struct file *file)
1231 {
1232         struct video_device *dev = video_devdata(file);
1233         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1234         int errCode = 0;
1235
1236         PDEBUG(DBG_IO, "");
1237
1238         down(&usbvision->lock);
1239
1240         usbvision_audio_off(usbvision);
1241         usbvision->radio=0;
1242         usbvision->user--;
1243
1244         if (PowerOnAtOpen) {
1245                 usbvision_set_powerOffTimer(usbvision);
1246                 usbvision->initialized = 0;
1247         }
1248
1249         up(&usbvision->lock);
1250
1251         if (usbvision->remove_pending) {
1252                 info("%s: Final disconnect", __FUNCTION__);
1253                 usbvision_release(usbvision);
1254         }
1255
1256
1257         PDEBUG(DBG_IO, "success");
1258
1259         return errCode;
1260 }
1261
1262 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1263                                  unsigned int cmd, void *arg)
1264 {
1265         struct video_device *dev = video_devdata(file);
1266         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1267
1268         if (!USBVISION_IS_OPERATIONAL(usbvision))
1269                 return -EIO;
1270
1271         switch (cmd) {
1272                 case VIDIOC_QUERYCAP:
1273                 {
1274                         struct v4l2_capability *vc=arg;
1275
1276                         memset(vc, 0, sizeof(*vc));
1277                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1278                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1279                                 sizeof(vc->card));
1280                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1281                                 sizeof(vc->bus_info));
1282                         vc->version = USBVISION_DRIVER_VERSION;
1283                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1284                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1285                         return 0;
1286                 }
1287                 case VIDIOC_QUERYCTRL:
1288                 {
1289                         struct v4l2_queryctrl *ctrl = arg;
1290                         int id=ctrl->id;
1291
1292                         memset(ctrl,0,sizeof(*ctrl));
1293                         ctrl->id=id;
1294
1295                         call_i2c_clients(usbvision, cmd, arg);
1296                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1297
1298                         if (ctrl->type)
1299                                 return 0;
1300                         else
1301                                 return -EINVAL;
1302
1303                 }
1304                 case VIDIOC_G_CTRL:
1305                 {
1306                         struct v4l2_control *ctrl = arg;
1307
1308                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1309                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1310                         return 0;
1311                 }
1312                 case VIDIOC_S_CTRL:
1313                 {
1314                         struct v4l2_control *ctrl = arg;
1315
1316                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1317                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1318                         return 0;
1319                 }
1320                 case VIDIOC_G_TUNER:
1321                 {
1322                         struct v4l2_tuner *t = arg;
1323
1324                         if (t->index > 0)
1325                                 return -EINVAL;
1326
1327                         memset(t,0,sizeof(*t));
1328                         strcpy(t->name, "Radio");
1329                         t->type = V4L2_TUNER_RADIO;
1330
1331                         /* Let clients fill in the remainder of this struct */
1332                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1333                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1334                         return 0;
1335                 }
1336                 case VIDIOC_S_TUNER:
1337                 {
1338                         struct v4l2_tuner *vt = arg;
1339
1340                         // Only no or one tuner for now
1341                         if (!usbvision->have_tuner || vt->index)
1342                                 return -EINVAL;
1343                         /* let clients handle this */
1344                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1345
1346                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1347                         return 0;
1348                 }
1349                 case VIDIOC_G_AUDIO:
1350                 {
1351                         struct v4l2_audio *a = arg;
1352
1353                         memset(a,0,sizeof(*a));
1354                         strcpy(a->name,"Radio");
1355                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1356                         return 0;
1357                 }
1358                 case VIDIOC_S_AUDIO:
1359                 case VIDIOC_S_INPUT:
1360                 case VIDIOC_S_STD:
1361                 return 0;
1362
1363                 case VIDIOC_G_FREQUENCY:
1364                 {
1365                         struct v4l2_frequency *f = arg;
1366
1367                         memset(f,0,sizeof(*f));
1368
1369                         f->type = V4L2_TUNER_RADIO;
1370                         f->frequency = usbvision->freq;
1371                         call_i2c_clients(usbvision, cmd, f);
1372                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1373
1374                         return 0;
1375                 }
1376                 case VIDIOC_S_FREQUENCY:
1377                 {
1378                         struct v4l2_frequency *f = arg;
1379
1380                         if (f->tuner != 0)
1381                                 return -EINVAL;
1382                         usbvision->freq = f->frequency;
1383                         call_i2c_clients(usbvision, cmd, f);
1384                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1385
1386                         return 0;
1387                 }
1388                 default:
1389                 {
1390                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1391                         return -ENOIOCTLCMD;
1392                 }
1393         }
1394         return 0;
1395 }
1396
1397
1398 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1399                        unsigned int cmd, unsigned long arg)
1400 {
1401         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1402 }
1403
1404
1405 /*
1406  * Here comes the stuff for vbi on usbvision based devices
1407  *
1408  */
1409 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1410 {
1411         /* TODO */
1412         return -EINVAL;
1413
1414 }
1415
1416 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1417 {
1418         /* TODO */
1419         return -EINVAL;
1420 }
1421
1422 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1423                                  unsigned int cmd, void *arg)
1424 {
1425         /* TODO */
1426         return -EINVAL;
1427 }
1428
1429 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1430                        unsigned int cmd, unsigned long arg)
1431 {
1432         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1433 }
1434
1435
1436 //
1437 // Video registration stuff
1438 //
1439
1440 // Video template
1441 static struct file_operations usbvision_fops = {
1442         .owner             = THIS_MODULE,
1443         .open           = usbvision_v4l2_open,
1444         .release        = usbvision_v4l2_close,
1445         .read           = usbvision_v4l2_read,
1446         .mmap           = usbvision_v4l2_mmap,
1447         .ioctl          = usbvision_v4l2_ioctl,
1448         .llseek         = no_llseek,
1449 };
1450 static struct video_device usbvision_video_template = {
1451         .owner             = THIS_MODULE,
1452         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1453         .hardware       = VID_HARDWARE_USBVISION,
1454         .fops           = &usbvision_fops,
1455         .name           = "usbvision-video",
1456         .release        = video_device_release,
1457         .minor          = -1,
1458 };
1459
1460
1461 // Radio template
1462 static struct file_operations usbvision_radio_fops = {
1463         .owner             = THIS_MODULE,
1464         .open           = usbvision_radio_open,
1465         .release        = usbvision_radio_close,
1466         .ioctl          = usbvision_radio_ioctl,
1467         .llseek         = no_llseek,
1468 };
1469
1470 static struct video_device usbvision_radio_template=
1471 {
1472         .owner             = THIS_MODULE,
1473         .type           = VID_TYPE_TUNER,
1474         .hardware       = VID_HARDWARE_USBVISION,
1475         .fops           = &usbvision_radio_fops,
1476         .release        = video_device_release,
1477         .name           = "usbvision-radio",
1478         .minor          = -1,
1479 };
1480
1481
1482 // vbi template
1483 static struct file_operations usbvision_vbi_fops = {
1484         .owner             = THIS_MODULE,
1485         .open           = usbvision_vbi_open,
1486         .release        = usbvision_vbi_close,
1487         .ioctl          = usbvision_vbi_ioctl,
1488         .llseek         = no_llseek,
1489 };
1490
1491 static struct video_device usbvision_vbi_template=
1492 {
1493         .owner             = THIS_MODULE,
1494         .type           = VID_TYPE_TUNER,
1495         .hardware       = VID_HARDWARE_USBVISION,
1496         .fops           = &usbvision_vbi_fops,
1497         .release        = video_device_release,
1498         .name           = "usbvision-vbi",
1499         .minor          = -1,
1500 };
1501
1502
1503 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1504                                         struct video_device *vdev_template,
1505                                         char *name)
1506 {
1507         struct usb_device *usb_dev = usbvision->dev;
1508         struct video_device *vdev;
1509
1510         if (usb_dev == NULL) {
1511                 err("%s: usbvision->dev is not set", __FUNCTION__);
1512                 return NULL;
1513         }
1514
1515         vdev = video_device_alloc();
1516         if (NULL == vdev) {
1517                 return NULL;
1518         }
1519         *vdev = *vdev_template;
1520 //      vdev->minor   = -1;
1521         vdev->dev     = &usb_dev->dev;
1522         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1523         video_set_drvdata(vdev, usbvision);
1524         return vdev;
1525 }
1526
1527 // unregister video4linux devices
1528 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1529 {
1530         // vbi Device:
1531         if (usbvision->vbi) {
1532                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1533                 if (usbvision->vbi->minor != -1) {
1534                         video_unregister_device(usbvision->vbi);
1535                 }
1536                 else {
1537                         video_device_release(usbvision->vbi);
1538                 }
1539                 usbvision->vbi = NULL;
1540         }
1541
1542         // Radio Device:
1543         if (usbvision->rdev) {
1544                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1545                 if (usbvision->rdev->minor != -1) {
1546                         video_unregister_device(usbvision->rdev);
1547                 }
1548                 else {
1549                         video_device_release(usbvision->rdev);
1550                 }
1551                 usbvision->rdev = NULL;
1552         }
1553
1554         // Video Device:
1555         if (usbvision->vdev) {
1556                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1557                 if (usbvision->vdev->minor != -1) {
1558                         video_unregister_device(usbvision->vdev);
1559                 }
1560                 else {
1561                         video_device_release(usbvision->vdev);
1562                 }
1563                 usbvision->vdev = NULL;
1564         }
1565 }
1566
1567 // register video4linux devices
1568 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1569 {
1570         // Video Device:
1571         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1572         if (usbvision->vdev == NULL) {
1573                 goto err_exit;
1574         }
1575         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1576                 goto err_exit;
1577         }
1578         info("USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]", usbvision->nr,usbvision->vdev->minor & 0x1f);
1579
1580         // Radio Device:
1581         if (usbvision_device_data[usbvision->DevModel].Radio) {
1582                 // usbvision has radio
1583                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1584                 if (usbvision->rdev == NULL) {
1585                         goto err_exit;
1586                 }
1587                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1588                         goto err_exit;
1589                 }
1590                 info("USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]", usbvision->nr, usbvision->rdev->minor & 0x1f);
1591         }
1592         // vbi Device:
1593         if (usbvision_device_data[usbvision->DevModel].vbi) {
1594                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1595                 if (usbvision->vdev == NULL) {
1596                         goto err_exit;
1597                 }
1598                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1599                         goto err_exit;
1600                 }
1601                 info("USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)", usbvision->nr,usbvision->vbi->minor & 0x1f);
1602         }
1603         // all done
1604         return 0;
1605
1606  err_exit:
1607         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1608         usbvision_unregister_video(usbvision);
1609         return -1;
1610 }
1611
1612 /*
1613  * usbvision_alloc()
1614  *
1615  * This code allocates the struct usb_usbvision. It is filled with default values.
1616  *
1617  * Returns NULL on error, a pointer to usb_usbvision else.
1618  *
1619  */
1620 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1621 {
1622         struct usb_usbvision *usbvision;
1623
1624         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1625                 goto err_exit;
1626         }
1627
1628         usbvision->dev = dev;
1629
1630         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1631
1632         // prepare control urb for control messages during interrupts
1633         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1634         if (usbvision->ctrlUrb == NULL) {
1635                 goto err_exit;
1636         }
1637         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1638         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1639
1640         usbvision_init_powerOffTimer(usbvision);
1641
1642         return usbvision;
1643
1644 err_exit:
1645         if (usbvision && usbvision->ctrlUrb) {
1646                 usb_free_urb(usbvision->ctrlUrb);
1647         }
1648         if (usbvision) {
1649                 kfree(usbvision);
1650         }
1651         return NULL;
1652 }
1653
1654 /*
1655  * usbvision_release()
1656  *
1657  * This code does final release of struct usb_usbvision. This happens
1658  * after the device is disconnected -and- all clients closed their files.
1659  *
1660  */
1661 static void usbvision_release(struct usb_usbvision *usbvision)
1662 {
1663         PDEBUG(DBG_PROBE, "");
1664
1665         down(&usbvision->lock);
1666
1667         usbvision_reset_powerOffTimer(usbvision);
1668
1669         usbvision->initialized = 0;
1670
1671         up(&usbvision->lock);
1672
1673         usbvision_remove_sysfs(usbvision->vdev);
1674         usbvision_unregister_video(usbvision);
1675
1676         if (usbvision->ctrlUrb) {
1677                 usb_free_urb(usbvision->ctrlUrb);
1678         }
1679
1680         kfree(usbvision);
1681
1682         PDEBUG(DBG_PROBE, "success");
1683 }
1684
1685
1686 /******************************** usb interface *****************************************/
1687
1688 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1689 {
1690         int model,i;
1691
1692         if (usbvision == NULL)
1693                 return;
1694
1695         model = usbvision->DevModel;
1696         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1697
1698         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
1699                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
1700         } else {
1701                 usbvision->Vin_Reg2_Preset = 0;
1702         }
1703
1704         for (i = 0; i < TVNORMS; i++)
1705                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1706                         break;
1707         if (i == TVNORMS)
1708                 i = 0;
1709         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1710
1711         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1712         usbvision->ctl_input = 0;
1713
1714         /* This should be here to make i2c clients to be able to register */
1715         usbvision_audio_off(usbvision); //first switch off audio
1716         if (!PowerOnAtOpen) {
1717                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1718                 usbvision_init_i2c(usbvision);
1719         }
1720 }
1721
1722 /*
1723  * usbvision_probe()
1724  *
1725  * This procedure queries device descriptor and accepts the interface
1726  * if it looks like USBVISION video device
1727  *
1728  */
1729 static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
1730 {
1731         struct usb_device *dev = interface_to_usbdev(intf);
1732         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1733         const struct usb_host_interface *interface;
1734         struct usb_usbvision *usbvision = NULL;
1735         const struct usb_endpoint_descriptor *endpoint;
1736         int model;
1737
1738         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1739                                         dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
1740         /* Is it an USBVISION video dev? */
1741         model = 0;
1742         for(model = 0; usbvision_device_data[model].idVendor; model++) {
1743                 if (le16_to_cpu(dev->descriptor.idVendor) != usbvision_device_data[model].idVendor) {
1744                         continue;
1745                 }
1746                 if (le16_to_cpu(dev->descriptor.idProduct) != usbvision_device_data[model].idProduct) {
1747                         continue;
1748                 }
1749
1750                 info("%s: %s found", __FUNCTION__, usbvision_device_data[model].ModelString);
1751                 break;
1752         }
1753
1754         if (usbvision_device_data[model].idVendor == 0) {
1755                 return -ENODEV; //no matching device
1756         }
1757         if (usbvision_device_data[model].Interface >= 0) {
1758                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1759         }
1760         else {
1761                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1762         }
1763         endpoint = &interface->endpoint[1].desc;
1764         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1765                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1766                 err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
1767                 return -ENODEV;
1768         }
1769         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1770                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1771                 return -ENODEV;
1772         }
1773
1774         usb_get_dev(dev);
1775
1776         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1777                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1778                 return -ENOMEM;
1779         }
1780         if (dev->descriptor.bNumConfigurations > 1) {
1781                 usbvision->bridgeType = BRIDGE_NT1004;
1782         }
1783         else if (usbvision_device_data[model].ModelString == "Dazzle Fusion Model DVC-90 Rev 1 (SECAM)") {
1784                 usbvision->bridgeType = BRIDGE_NT1005;
1785         }
1786         else {
1787                 usbvision->bridgeType = BRIDGE_NT1003;
1788         }
1789         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1790
1791         down(&usbvision->lock);
1792
1793         usbvision->nr = usbvision_nr++;
1794
1795         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1796         if (usbvision->have_tuner) {
1797                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1798         }
1799
1800         usbvision->tuner_addr = ADDR_UNSET;
1801
1802         usbvision->DevModel = model;
1803         usbvision->remove_pending = 0;
1804         usbvision->iface = ifnum;
1805         usbvision->ifaceAltInactive = 0;
1806         usbvision->ifaceAltActive = 1;
1807         usbvision->video_endp = endpoint->bEndpointAddress;
1808         usbvision->isocPacketSize = 0;
1809         usbvision->usb_bandwidth = 0;
1810         usbvision->user = 0;
1811         usbvision->streaming = Stream_Off;
1812         usbvision_register_video(usbvision);
1813         usbvision_configure_video(usbvision);
1814         up(&usbvision->lock);
1815
1816
1817         usb_set_intfdata (intf, usbvision);
1818         usbvision_create_sysfs(usbvision->vdev);
1819
1820         PDEBUG(DBG_PROBE, "success");
1821         return 0;
1822 }
1823
1824
1825 /*
1826  * usbvision_disconnect()
1827  *
1828  * This procedure stops all driver activity, deallocates interface-private
1829  * structure (pointed by 'ptr') and after that driver should be removable
1830  * with no ill consequences.
1831  *
1832  */
1833 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1834 {
1835         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1836
1837         PDEBUG(DBG_PROBE, "");
1838
1839         if (usbvision == NULL) {
1840                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1841                 return;
1842         }
1843         usb_set_intfdata (intf, NULL);
1844
1845         down(&usbvision->lock);
1846
1847         // At this time we ask to cancel outstanding URBs
1848         usbvision_stop_isoc(usbvision);
1849
1850         if (usbvision->power) {
1851                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1852                 usbvision_power_off(usbvision);
1853         }
1854         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1855
1856         usb_put_dev(usbvision->dev);
1857         usbvision->dev = NULL;  // USB device is no more
1858
1859         up(&usbvision->lock);
1860
1861         if (usbvision->user) {
1862                 info("%s: In use, disconnect pending", __FUNCTION__);
1863                 wake_up_interruptible(&usbvision->wait_frame);
1864                 wake_up_interruptible(&usbvision->wait_stream);
1865         }
1866         else {
1867                 usbvision_release(usbvision);
1868         }
1869
1870         PDEBUG(DBG_PROBE, "success");
1871
1872 }
1873
1874 static struct usb_driver usbvision_driver = {
1875         .name           = "usbvision",
1876         .id_table       = usbvision_table,
1877         .probe          = usbvision_probe,
1878         .disconnect     = usbvision_disconnect
1879 };
1880
1881 /*
1882  * customdevice_process()
1883  *
1884  * This procedure preprocesses CustomDevice parameter if any
1885  *
1886  */
1887 void customdevice_process(void)
1888 {
1889         usbvision_device_data[0]=usbvision_device_data[1];
1890         usbvision_table[0]=usbvision_table[1];
1891
1892         if(CustomDevice)
1893         {
1894                 char *parse=CustomDevice;
1895
1896                 PDEBUG(DBG_PROBE, "CustomDevide=%s", CustomDevice);
1897
1898                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
1899                 usbvision_device_data[0].idVendor;
1900                 usbvision_device_data[0].idProduct;
1901                 usbvision_device_data[0].Interface;
1902                 usbvision_device_data[0].Codec;
1903                 usbvision_device_data[0].VideoChannels;
1904                 usbvision_device_data[0].VideoNorm;
1905                 usbvision_device_data[0].AudioChannels;
1906                 usbvision_device_data[0].Radio;
1907                 usbvision_device_data[0].Tuner;
1908                 usbvision_device_data[0].TunerType;
1909                 usbvision_device_data[0].Vin_Reg1;
1910                 usbvision_device_data[0].Vin_Reg2;
1911                 usbvision_device_data[0].X_Offset;
1912                 usbvision_device_data[0].Y_Offset;
1913                 usbvision_device_data[0].Dvi_yuv;
1914                 usbvision_device_data[0].ModelString;
1915                 */
1916
1917                 rmspace(parse);
1918                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
1919
1920                 parse+=2;
1921                 sscanf(parse,"%x",&usbvision_device_data[0].idVendor);
1922                 goto2next(parse);
1923                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_device_data[0].idVendor);
1924                 parse+=2;
1925                 sscanf(parse,"%x",&usbvision_device_data[0].idProduct);
1926                 goto2next(parse);
1927                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_device_data[0].idProduct);
1928                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
1929                 goto2next(parse);
1930                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
1931                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
1932                 goto2next(parse);
1933                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
1934                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
1935                 goto2next(parse);
1936                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
1937
1938                 switch(*parse)
1939                 {
1940                         case 'P':
1941                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
1942                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
1943                                 break;
1944
1945                         case 'S':
1946                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
1947                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_SECAM;
1948                                 break;
1949
1950                         case 'N':
1951                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
1952                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_NTSC;
1953                                 break;
1954
1955                         default:
1956                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
1957                                 usbvision_device_data[0].VideoNorm=VIDEO_MODE_PAL;
1958                                 break;
1959                 }
1960                 goto2next(parse);
1961
1962                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
1963                 goto2next(parse);
1964                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
1965                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
1966                 goto2next(parse);
1967                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
1968                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
1969                 goto2next(parse);
1970                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
1971                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
1972                 goto2next(parse);
1973                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
1974                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
1975                 goto2next(parse);
1976                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
1977                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
1978                 goto2next(parse);
1979                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
1980                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
1981                 goto2next(parse);
1982                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
1983                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
1984                 goto2next(parse);
1985                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
1986                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
1987                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
1988
1989                 //add to usbvision_table also
1990                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
1991                 usbvision_table[0].idVendor=usbvision_device_data[0].idVendor;
1992                 usbvision_table[0].idProduct=usbvision_device_data[0].idProduct;
1993
1994         }
1995 }
1996
1997
1998
1999 /*
2000  * usbvision_init()
2001  *
2002  * This code is run to initialize the driver.
2003  *
2004  */
2005 static int __init usbvision_init(void)
2006 {
2007         int errCode;
2008
2009         PDEBUG(DBG_PROBE, "");
2010
2011         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
2012         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
2013         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
2014         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
2015
2016         /* disable planar mode support unless compression enabled */
2017         if (isocMode != ISOC_MODE_COMPRESS ) {
2018                 // FIXME : not the right way to set supported flag
2019                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
2020                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
2021         }
2022
2023         customdevice_process();
2024
2025         errCode = usb_register(&usbvision_driver);
2026
2027         if (errCode == 0) {
2028                 info(DRIVER_DESC " : " USBVISION_VERSION_STRING);
2029                 PDEBUG(DBG_PROBE, "success");
2030         }
2031         return errCode;
2032 }
2033
2034 static void __exit usbvision_exit(void)
2035 {
2036  PDEBUG(DBG_PROBE, "");
2037
2038  usb_deregister(&usbvision_driver);
2039  PDEBUG(DBG_PROBE, "success");
2040 }
2041
2042 module_init(usbvision_init);
2043 module_exit(usbvision_exit);
2044
2045 /*
2046  * Overrides for Emacs so that we follow Linus's tabbing style.
2047  * ---------------------------------------------------------------------------
2048  * Local variables:
2049  * c-basic-offset: 8
2050  * End:
2051  */