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

   1 /*
   2  * USB USBVISION Video device driver 0.9.9
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/version.h>
  49 #include <linux/kernel.h>
  50 #include <linux/list.h>
  51 #include <linux/timer.h>
  52 #include <linux/slab.h>
  53 #include <linux/mm.h>
  54 #include <linux/utsname.h>
  55 #include <linux/highmem.h>
  56 #include <linux/videodev.h>
  57 #include <linux/vmalloc.h>
  58 #include <linux/module.h>
  59 #include <linux/init.h>
  60 #include <linux/spinlock.h>
  61 #include <asm/io.h>
  62 #include <linux/videodev2.h>
  63 #include <linux/video_decoder.h>
  64 #include <linux/i2c.h>
  65
  66 #include <media/saa7115.h>
  67 #include <media/v4l2-common.h>
  68 #include <media/tuner.h>
  69 #include <media/audiochip.h>
  70
  71 #include <linux/moduleparam.h>
  72 #include <linux/workqueue.h>
  73
  74 #ifdef CONFIG_KMOD
  75 #include <linux/kmod.h>
  76 #endif
  77
  78 #include "usbvision.h"
  79 #include "usbvision-cards.h"
  80
  81 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  82  Dwaine Garden <DwaineGarden@rogers.com>"
  83 #define DRIVER_NAME "usbvision"
  84 #define DRIVER_ALIAS "USBVision"
  85 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  86 #define DRIVER_LICENSE "GPL"
  87 #define USBVISION_DRIVER_VERSION_MAJOR 0
  88 #define USBVISION_DRIVER_VERSION_MINOR 9
  89 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  90 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  91 USBVISION_DRIVER_VERSION_MINOR,\
  92 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  93 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  94  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  95  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  96
  97 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  98
  99
 100 #ifdef USBVISION_DEBUG
 101         #define PDEBUG(level, fmt, args...) \
 102                 if (video_debug & (level)) \
 103                         info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\
 104                                 ## args)
 105 #else
 106         #define PDEBUG(level, fmt, args...) do {} while(0)
 107 #endif
 108
 109 #define DBG_IO          1<<1
 110 #define DBG_PROBE       1<<2
 111 #define DBG_MMAP        1<<3
 112
 113 //String operations
 114 #define rmspace(str)    while(*str==' ') str++;
 115 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 116
 117
 118 /* sequential number of usbvision device */
 119 static int usbvision_nr = 0;
 120
 121 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 122         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 123         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 124         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 125         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 126         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 127         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 128         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 129         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 130 };
 131
 132 /* Function prototypes */
 133 static void usbvision_release(struct usb_usbvision *usbvision);
 134
 135 /* Default initalization of device driver parameters */
 136 /* Set the default format for ISOC endpoint */
 137 static int isocMode = ISOC_MODE_COMPRESS;
 138 /* Set the default Debug Mode of the device driver */
 139 static int video_debug = 0;
 140 /* Set the default device to power on at startup */
 141 static int PowerOnAtOpen = 1;
 142 /* Sequential Number of Video Device */
 143 static int video_nr = -1;
 144 /* Sequential Number of Radio Device */
 145 static int radio_nr = -1;
 146 /* Sequential Number of VBI Device */
 147 static int vbi_nr = -1;
 148
 149 /* Grab parameters for the device driver */
 150
 151 /* Showing parameters under SYSFS */
 152 module_param(isocMode, int, 0444);
 153 module_param(video_debug, int, 0444);
 154 module_param(PowerOnAtOpen, int, 0444);
 155 module_param(video_nr, int, 0444);
 156 module_param(radio_nr, int, 0444);
 157 module_param(vbi_nr, int, 0444);
 158
 159 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 160 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 161 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 162 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 164 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 165
 166
 167 // Misc stuff
 168 MODULE_AUTHOR(DRIVER_AUTHOR);
 169 MODULE_DESCRIPTION(DRIVER_DESC);
 170 MODULE_LICENSE(DRIVER_LICENSE);
 171 MODULE_VERSION(USBVISION_VERSION_STRING);
 172 MODULE_ALIAS(DRIVER_ALIAS);
 173
 174
 175 /*****************************************************************************/
 176 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 177 /* Device information is located at /sys/class/video4linux/video0            */
 178 /* Device parameters information is located at /sys/module/usbvision         */
 179 /* Device USB Information is located at                                      */
 180 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 181 /*****************************************************************************/
 182
 183
 184 #define YES_NO(x) ((x) ? "Yes" : "No")
 185
 186 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 187 {
 188         struct video_device *vdev =
 189                 container_of(cd, struct video_device, class_dev);
 190         return video_get_drvdata(vdev);
 191 }
 192
 193 static ssize_t show_version(struct class_device *cd, char *buf)
 194 {
 195         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 196 }
 197 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 198
 199 static ssize_t show_model(struct class_device *cd, char *buf)
 200 {
 201         struct video_device *vdev =
 202                 container_of(cd, struct video_device, class_dev);
 203         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 204         return sprintf(buf, "%s\n",
 205                        usbvision_device_data[usbvision->DevModel].ModelString);
 206 }
 207 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 208
 209 static ssize_t show_hue(struct class_device *cd, char *buf)
 210 {
 211         struct video_device *vdev =
 212                 container_of(cd, struct video_device, class_dev);
 213         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 214         struct v4l2_control ctrl;
 215         ctrl.id = V4L2_CID_HUE;
 216         ctrl.value = 0;
 217         if(usbvision->user)
 218                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 219         return sprintf(buf, "%d\n", ctrl.value);
 220 }
 221 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 222
 223 static ssize_t show_contrast(struct class_device *cd, char *buf)
 224 {
 225         struct video_device *vdev =
 226                 container_of(cd, struct video_device, class_dev);
 227         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 228         struct v4l2_control ctrl;
 229         ctrl.id = V4L2_CID_CONTRAST;
 230         ctrl.value = 0;
 231         if(usbvision->user)
 232                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 233         return sprintf(buf, "%d\n", ctrl.value);
 234 }
 235 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 236
 237 static ssize_t show_brightness(struct class_device *cd, char *buf)
 238 {
 239         struct video_device *vdev =
 240                 container_of(cd, struct video_device, class_dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_BRIGHTNESS;
 244         ctrl.value = 0;
 245         if(usbvision->user)
 246                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 250
 251 static ssize_t show_saturation(struct class_device *cd, char *buf)
 252 {
 253         struct video_device *vdev =
 254                 container_of(cd, struct video_device, class_dev);
 255         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 256         struct v4l2_control ctrl;
 257         ctrl.id = V4L2_CID_SATURATION;
 258         ctrl.value = 0;
 259         if(usbvision->user)
 260                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 261         return sprintf(buf, "%d\n", ctrl.value);
 262 }
 263 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 264
 265 static ssize_t show_streaming(struct class_device *cd, char *buf)
 266 {
 267         struct video_device *vdev =
 268                 container_of(cd, struct video_device, class_dev);
 269         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 270         return sprintf(buf, "%s\n",
 271                        YES_NO(usbvision->streaming==Stream_On?1:0));
 272 }
 273 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 274
 275 static ssize_t show_compression(struct class_device *cd, char *buf)
 276 {
 277         struct video_device *vdev =
 278                 container_of(cd, struct video_device, class_dev);
 279         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 280         return sprintf(buf, "%s\n",
 281                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 282 }
 283 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 284
 285 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 286 {
 287         struct video_device *vdev =
 288                 container_of(cd, struct video_device, class_dev);
 289         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 290         return sprintf(buf, "%d\n", usbvision->bridgeType);
 291 }
 292 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 293
 294 static void usbvision_create_sysfs(struct video_device *vdev)
 295 {
 296         int res;
 297         if (!vdev)
 298                 return;
 299         do {
 300                 res=class_device_create_file(&vdev->class_dev,
 301                                              &class_device_attr_version);
 302                 if (res<0)
 303                         break;
 304                 res=class_device_create_file(&vdev->class_dev,
 305                                              &class_device_attr_model);
 306                 if (res<0)
 307                         break;
 308                 res=class_device_create_file(&vdev->class_dev,
 309                                              &class_device_attr_hue);
 310                 if (res<0)
 311                         break;
 312                 res=class_device_create_file(&vdev->class_dev,
 313                                              &class_device_attr_contrast);
 314                 if (res<0)
 315                         break;
 316                 res=class_device_create_file(&vdev->class_dev,
 317                                              &class_device_attr_brightness);
 318                 if (res<0)
 319                         break;
 320                 res=class_device_create_file(&vdev->class_dev,
 321                                              &class_device_attr_saturation);
 322                 if (res<0)
 323                         break;
 324                 res=class_device_create_file(&vdev->class_dev,
 325                                              &class_device_attr_streaming);
 326                 if (res<0)
 327                         break;
 328                 res=class_device_create_file(&vdev->class_dev,
 329                                              &class_device_attr_compression);
 330                 if (res<0)
 331                         break;
 332                 res=class_device_create_file(&vdev->class_dev,
 333                                              &class_device_attr_bridge);
 334                 if (res>=0)
 335                         return;
 336         } while (0);
 337
 338         err("%s error: %d\n", __FUNCTION__, res);
 339 }
 340
 341 static void usbvision_remove_sysfs(struct video_device *vdev)
 342 {
 343         if (vdev) {
 344                 class_device_remove_file(&vdev->class_dev,
 345                                          &class_device_attr_version);
 346                 class_device_remove_file(&vdev->class_dev,
 347                                          &class_device_attr_model);
 348                 class_device_remove_file(&vdev->class_dev,
 349                                          &class_device_attr_hue);
 350                 class_device_remove_file(&vdev->class_dev,
 351                                          &class_device_attr_contrast);
 352                 class_device_remove_file(&vdev->class_dev,
 353                                          &class_device_attr_brightness);
 354                 class_device_remove_file(&vdev->class_dev,
 355                                          &class_device_attr_saturation);
 356                 class_device_remove_file(&vdev->class_dev,
 357                                          &class_device_attr_streaming);
 358                 class_device_remove_file(&vdev->class_dev,
 359                                          &class_device_attr_compression);
 360                 class_device_remove_file(&vdev->class_dev,
 361                                          &class_device_attr_bridge);
 362         }
 363 }
 364
 365
 366 /*
 367  * usbvision_open()
 368  *
 369  * This is part of Video 4 Linux API. The driver can be opened by one
 370  * client only (checks internal counter 'usbvision->user'). The procedure
 371  * then allocates buffers needed for video processing.
 372  *
 373  */
 374 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 375 {
 376         struct video_device *dev = video_devdata(file);
 377         struct usb_usbvision *usbvision =
 378                 (struct usb_usbvision *) video_get_drvdata(dev);
 379         int errCode = 0;
 380
 381         PDEBUG(DBG_IO, "open");
 382
 383
 384         usbvision_reset_powerOffTimer(usbvision);
 385
 386         if (usbvision->user)
 387                 errCode = -EBUSY;
 388         else {
 389                 /* Allocate memory for the scratch ring buffer */
 390                 errCode = usbvision_scratch_alloc(usbvision);
 391                 if (isocMode==ISOC_MODE_COMPRESS) {
 392                         /* Allocate intermediate decompression buffers
 393                            only if needed */
 394                         errCode = usbvision_decompress_alloc(usbvision);
 395                 }
 396                 if (errCode) {
 397                         /* Deallocate all buffers if trouble */
 398                         usbvision_scratch_free(usbvision);
 399                         usbvision_decompress_free(usbvision);
 400                 }
 401         }
 402
 403         /* If so far no errors then we shall start the camera */
 404         if (!errCode) {
 405                 down(&usbvision->lock);
 406                 if (usbvision->power == 0) {
 407                         usbvision_power_on(usbvision);
 408                         usbvision_i2c_register(usbvision);
 409                 }
 410
 411                 /* Send init sequence only once, it's large! */
 412                 if (!usbvision->initialized) {
 413                         int setup_ok = 0;
 414                         setup_ok = usbvision_setup(usbvision,isocMode);
 415                         if (setup_ok)
 416                                 usbvision->initialized = 1;
 417                         else
 418                                 errCode = -EBUSY;
 419                 }
 420
 421                 if (!errCode) {
 422                         usbvision_begin_streaming(usbvision);
 423                         errCode = usbvision_init_isoc(usbvision);
 424                         /* device must be initialized before isoc transfer */
 425                         usbvision_muxsel(usbvision,0);
 426                         usbvision->user++;
 427                 } else {
 428                         if (PowerOnAtOpen) {
 429                                 usbvision_i2c_unregister(usbvision);
 430                                 usbvision_power_off(usbvision);
 431                                 usbvision->initialized = 0;
 432                         }
 433                 }
 434                 up(&usbvision->lock);
 435         }
 436
 437         if (errCode) {
 438         }
 439
 440         /* prepare queues */
 441         usbvision_empty_framequeues(usbvision);
 442
 443         PDEBUG(DBG_IO, "success");
 444         return errCode;
 445 }
 446
 447 /*
 448  * usbvision_v4l2_close()
 449  *
 450  * This is part of Video 4 Linux API. The procedure
 451  * stops streaming and deallocates all buffers that were earlier
 452  * allocated in usbvision_v4l2_open().
 453  *
 454  */
 455 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 456 {
 457         struct video_device *dev = video_devdata(file);
 458         struct usb_usbvision *usbvision =
 459                 (struct usb_usbvision *) video_get_drvdata(dev);
 460
 461         PDEBUG(DBG_IO, "close");
 462         down(&usbvision->lock);
 463
 464         usbvision_audio_off(usbvision);
 465         usbvision_restart_isoc(usbvision);
 466         usbvision_stop_isoc(usbvision);
 467
 468         usbvision_decompress_free(usbvision);
 469         usbvision_frames_free(usbvision);
 470         usbvision_empty_framequeues(usbvision);
 471         usbvision_scratch_free(usbvision);
 472
 473         usbvision->user--;
 474
 475         if (PowerOnAtOpen) {
 476                 /* power off in a little while
 477                    to avoid off/on every close/open short sequences */
 478                 usbvision_set_powerOffTimer(usbvision);
 479                 usbvision->initialized = 0;
 480         }
 481
 482         up(&usbvision->lock);
 483
 484         if (usbvision->remove_pending) {
 485                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 486                 usbvision_release(usbvision);
 487         }
 488
 489         PDEBUG(DBG_IO, "success");
 490
 491
 492         return 0;
 493 }
 494
 495
 496 /*
 497  * usbvision_ioctl()
 498  *
 499  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 500  *
 501  */
 502 #ifdef CONFIG_VIDEO_ADV_DEBUG
 503 static int vidioc_g_register (struct file *file, void *priv,
 504                                 struct v4l2_register *reg)
 505 {
 506         struct video_device *dev = video_devdata(file);
 507         struct usb_usbvision *usbvision =
 508                 (struct usb_usbvision *) video_get_drvdata(dev);
 509         int errCode;
 510
 511         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 512                 return -EINVAL;
 513         /* NT100x has a 8-bit register space */
 514         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 515         if (errCode < 0) {
 516                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 517                     __FUNCTION__, errCode);
 518                 return errCode;
 519         }
 520         return 0;
 521 }
 522
 523 static int vidioc_s_register (struct file *file, void *priv,
 524                                 struct v4l2_register *reg)
 525 {
 526         struct video_device *dev = video_devdata(file);
 527         struct usb_usbvision *usbvision =
 528                 (struct usb_usbvision *) video_get_drvdata(dev);
 529         int errCode;
 530
 531         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 532                 return -EINVAL;
 533         /* NT100x has a 8-bit register space */
 534         reg->val = (u8)usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 535         if (reg->val < 0) {
 536                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 537                     __FUNCTION__, errCode);
 538                 return errCode;
 539         }
 540         return 0;
 541 }
 542 #endif
 543
 544 static int vidioc_querycap (struct file *file, void  *priv,
 545                                         struct v4l2_capability *vc)
 546 {
 547         struct video_device *dev = video_devdata(file);
 548         struct usb_usbvision *usbvision =
 549                 (struct usb_usbvision *) video_get_drvdata(dev);
 550
 551         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 552         strlcpy(vc->card,
 553                 usbvision_device_data[usbvision->DevModel].ModelString,
 554                 sizeof(vc->card));
 555         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 556                 sizeof(vc->bus_info));
 557         vc->version = USBVISION_DRIVER_VERSION;
 558         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 559                 V4L2_CAP_AUDIO |
 560                 V4L2_CAP_READWRITE |
 561                 V4L2_CAP_STREAMING |
 562                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 563         return 0;
 564 }
 565
 566 static int vidioc_enum_input (struct file *file, void *priv,
 567                                 struct v4l2_input *vi)
 568 {
 569         struct video_device *dev = video_devdata(file);
 570         struct usb_usbvision *usbvision =
 571                 (struct usb_usbvision *) video_get_drvdata(dev);
 572         int chan;
 573
 574         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 575                 return -EINVAL;
 576         if (usbvision->have_tuner) {
 577                 chan = vi->index;
 578         } else {
 579                 chan = vi->index + 1; /*skip Television string*/
 580         }
 581         /* Determine the requested input characteristics
 582            specific for each usbvision card model */
 583         switch(chan) {
 584         case 0:
 585                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 586                         strcpy(vi->name, "White Video Input");
 587                 } else {
 588                         strcpy(vi->name, "Television");
 589                         vi->type = V4L2_INPUT_TYPE_TUNER;
 590                         vi->audioset = 1;
 591                         vi->tuner = chan;
 592                         vi->std = USBVISION_NORMS;
 593                 }
 594                 break;
 595         case 1:
 596                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 597                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 598                         strcpy(vi->name, "Green Video Input");
 599                 } else {
 600                         strcpy(vi->name, "Composite Video Input");
 601                 }
 602                 vi->std = V4L2_STD_PAL;
 603                 break;
 604         case 2:
 605                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 606                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 607                         strcpy(vi->name, "Yellow Video Input");
 608                 } else {
 609                         strcpy(vi->name, "S-Video Input");
 610                 }
 611                 vi->std = V4L2_STD_PAL;
 612                 break;
 613         case 3:
 614                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 615                 strcpy(vi->name, "Red Video Input");
 616                 vi->std = V4L2_STD_PAL;
 617                 break;
 618         }
 619         return 0;
 620 }
 621
 622 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 623 {
 624         struct video_device *dev = video_devdata(file);
 625         struct usb_usbvision *usbvision =
 626                 (struct usb_usbvision *) video_get_drvdata(dev);
 627
 628         *input = usbvision->ctl_input;
 629         return 0;
 630 }
 631
 632 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 633 {
 634         struct video_device *dev = video_devdata(file);
 635         struct usb_usbvision *usbvision =
 636                 (struct usb_usbvision *) video_get_drvdata(dev);
 637
 638         if ((input >= usbvision->video_inputs) || (input < 0) )
 639                 return -EINVAL;
 640
 641         down(&usbvision->lock);
 642         usbvision_muxsel(usbvision, input);
 643         usbvision_set_input(usbvision);
 644         usbvision_set_output(usbvision,
 645                              usbvision->curwidth,
 646                              usbvision->curheight);
 647         up(&usbvision->lock);
 648         return 0;
 649 }
 650
 651 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 652 {
 653         struct video_device *dev = video_devdata(file);
 654         struct usb_usbvision *usbvision =
 655                 (struct usb_usbvision *) video_get_drvdata(dev);
 656         usbvision->tvnormId=*id;
 657
 658         down(&usbvision->lock);
 659         call_i2c_clients(usbvision, VIDIOC_S_STD,
 660                          &usbvision->tvnormId);
 661         up(&usbvision->lock);
 662         /* propagate the change to the decoder */
 663         usbvision_muxsel(usbvision, usbvision->ctl_input);
 664
 665         return 0;
 666 }
 667
 668 static int vidioc_g_tuner (struct file *file, void *priv,
 669                                 struct v4l2_tuner *vt)
 670 {
 671         struct video_device *dev = video_devdata(file);
 672         struct usb_usbvision *usbvision =
 673                 (struct usb_usbvision *) video_get_drvdata(dev);
 674
 675         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 676                 return -EINVAL;
 677         if(usbvision->radio) {
 678                 strcpy(vt->name, "Radio");
 679                 vt->type = V4L2_TUNER_RADIO;
 680         } else {
 681                 strcpy(vt->name, "Television");
 682         }
 683         /* Let clients fill in the remainder of this struct */
 684         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 685
 686         return 0;
 687 }
 688
 689 static int vidioc_s_tuner (struct file *file, void *priv,
 690                                 struct v4l2_tuner *vt)
 691 {
 692         struct video_device *dev = video_devdata(file);
 693         struct usb_usbvision *usbvision =
 694                 (struct usb_usbvision *) video_get_drvdata(dev);
 695
 696         // Only no or one tuner for now
 697         if (!usbvision->have_tuner || vt->index)
 698                 return -EINVAL;
 699         /* let clients handle this */
 700         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 701
 702         return 0;
 703 }
 704
 705 static int vidioc_g_frequency (struct file *file, void *priv,
 706                                 struct v4l2_frequency *freq)
 707 {
 708         struct video_device *dev = video_devdata(file);
 709         struct usb_usbvision *usbvision =
 710                 (struct usb_usbvision *) video_get_drvdata(dev);
 711
 712         freq->tuner = 0; // Only one tuner
 713         if(usbvision->radio) {
 714                 freq->type = V4L2_TUNER_RADIO;
 715         } else {
 716                 freq->type = V4L2_TUNER_ANALOG_TV;
 717         }
 718         freq->frequency = usbvision->freq;
 719
 720         return 0;
 721 }
 722
 723 static int vidioc_s_frequency (struct file *file, void *priv,
 724                                 struct v4l2_frequency *freq)
 725 {
 726         struct video_device *dev = video_devdata(file);
 727         struct usb_usbvision *usbvision =
 728                 (struct usb_usbvision *) video_get_drvdata(dev);
 729
 730         // Only no or one tuner for now
 731         if (!usbvision->have_tuner || freq->tuner)
 732                 return -EINVAL;
 733
 734         usbvision->freq = freq->frequency;
 735         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 736
 737         return 0;
 738 }
 739
 740 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 741 {
 742         struct video_device *dev = video_devdata(file);
 743         struct usb_usbvision *usbvision =
 744                 (struct usb_usbvision *) video_get_drvdata(dev);
 745
 746         memset(a,0,sizeof(*a));
 747         if(usbvision->radio) {
 748                 strcpy(a->name,"Radio");
 749         } else {
 750                 strcpy(a->name, "TV");
 751         }
 752
 753         return 0;
 754 }
 755
 756 static int vidioc_s_audio (struct file *file, void *fh,
 757                           struct v4l2_audio *a)
 758 {
 759         if(a->index) {
 760                 return -EINVAL;
 761         }
 762
 763         return 0;
 764 }
 765
 766 static int vidioc_queryctrl (struct file *file, void *priv,
 767                             struct v4l2_queryctrl *ctrl)
 768 {
 769         struct video_device *dev = video_devdata(file);
 770         struct usb_usbvision *usbvision =
 771                 (struct usb_usbvision *) video_get_drvdata(dev);
 772         int id=ctrl->id;
 773
 774         memset(ctrl,0,sizeof(*ctrl));
 775         ctrl->id=id;
 776
 777         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 778
 779         if (!ctrl->type)
 780                 return -EINVAL;
 781
 782         return 0;
 783 }
 784
 785 static int vidioc_g_ctrl (struct file *file, void *priv,
 786                                 struct v4l2_control *ctrl)
 787 {
 788         struct video_device *dev = video_devdata(file);
 789         struct usb_usbvision *usbvision =
 790                 (struct usb_usbvision *) video_get_drvdata(dev);
 791         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 792
 793         return 0;
 794 }
 795
 796 static int vidioc_s_ctrl (struct file *file, void *priv,
 797                                 struct v4l2_control *ctrl)
 798 {
 799         struct video_device *dev = video_devdata(file);
 800         struct usb_usbvision *usbvision =
 801                 (struct usb_usbvision *) video_get_drvdata(dev);
 802         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 803
 804         return 0;
 805 }
 806
 807 static int vidioc_reqbufs (struct file *file,
 808                            void *priv, struct v4l2_requestbuffers *vr)
 809 {
 810         struct video_device *dev = video_devdata(file);
 811         struct usb_usbvision *usbvision =
 812                 (struct usb_usbvision *) video_get_drvdata(dev);
 813         int ret;
 814
 815         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 816
 817         /* Check input validity:
 818            the user must do a VIDEO CAPTURE and MMAP method. */
 819         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 820            (vr->memory != V4L2_MEMORY_MMAP))
 821                 return -EINVAL;
 822
 823         if(usbvision->streaming == Stream_On) {
 824                 if ((ret = usbvision_stream_interrupt(usbvision)))
 825                         return ret;
 826         }
 827
 828         usbvision_frames_free(usbvision);
 829         usbvision_empty_framequeues(usbvision);
 830         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 831
 832         usbvision->curFrame = NULL;
 833
 834         return 0;
 835 }
 836
 837 static int vidioc_querybuf (struct file *file,
 838                             void *priv, struct v4l2_buffer *vb)
 839 {
 840         struct video_device *dev = video_devdata(file);
 841         struct usb_usbvision *usbvision =
 842                 (struct usb_usbvision *) video_get_drvdata(dev);
 843         struct usbvision_frame *frame;
 844
 845         /* FIXME : must control
 846            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 847         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 848                 return -EINVAL;
 849         }
 850         if(vb->index>=usbvision->num_frames)  {
 851                 return -EINVAL;
 852         }
 853         /* Updating the corresponding frame state */
 854         vb->flags = 0;
 855         frame = &usbvision->frame[vb->index];
 856         if(frame->grabstate >= FrameState_Ready)
 857                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 858         if(frame->grabstate >= FrameState_Done)
 859                 vb->flags |= V4L2_BUF_FLAG_DONE;
 860         if(frame->grabstate == FrameState_Unused)
 861                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 862         vb->memory = V4L2_MEMORY_MMAP;
 863
 864         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 865
 866         vb->memory = V4L2_MEMORY_MMAP;
 867         vb->field = V4L2_FIELD_NONE;
 868         vb->length = usbvision->curwidth*
 869                 usbvision->curheight*
 870                 usbvision->palette.bytes_per_pixel;
 871         vb->timestamp = usbvision->frame[vb->index].timestamp;
 872         vb->sequence = usbvision->frame[vb->index].sequence;
 873         return 0;
 874 }
 875
 876 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 877 {
 878         struct video_device *dev = video_devdata(file);
 879         struct usb_usbvision *usbvision =
 880                 (struct usb_usbvision *) video_get_drvdata(dev);
 881         struct usbvision_frame *frame;
 882         unsigned long lock_flags;
 883
 884         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 885         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 886                 return -EINVAL;
 887         }
 888         if(vb->index>=usbvision->num_frames)  {
 889                 return -EINVAL;
 890         }
 891
 892         frame = &usbvision->frame[vb->index];
 893
 894         if (frame->grabstate != FrameState_Unused) {
 895                 return -EAGAIN;
 896         }
 897
 898         /* Mark it as ready and enqueue frame */
 899         frame->grabstate = FrameState_Ready;
 900         frame->scanstate = ScanState_Scanning;
 901         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 902
 903         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 904
 905         /* set v4l2_format index */
 906         frame->v4l2_format = usbvision->palette;
 907
 908         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 909         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 910         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 911
 912         return 0;
 913 }
 914
 915 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 916 {
 917         struct video_device *dev = video_devdata(file);
 918         struct usb_usbvision *usbvision =
 919                 (struct usb_usbvision *) video_get_drvdata(dev);
 920         int ret;
 921         struct usbvision_frame *f;
 922         unsigned long lock_flags;
 923
 924         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 925                 return -EINVAL;
 926
 927         if (list_empty(&(usbvision->outqueue))) {
 928                 if (usbvision->streaming == Stream_Idle)
 929                         return -EINVAL;
 930                 ret = wait_event_interruptible
 931                         (usbvision->wait_frame,
 932                          !list_empty(&(usbvision->outqueue)));
 933                 if (ret)
 934                         return ret;
 935         }
 936
 937         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 938         f = list_entry(usbvision->outqueue.next,
 939                        struct usbvision_frame, frame);
 940         list_del(usbvision->outqueue.next);
 941         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 942
 943         f->grabstate = FrameState_Unused;
 944
 945         vb->memory = V4L2_MEMORY_MMAP;
 946         vb->flags = V4L2_BUF_FLAG_MAPPED |
 947                 V4L2_BUF_FLAG_QUEUED |
 948                 V4L2_BUF_FLAG_DONE;
 949         vb->index = f->index;
 950         vb->sequence = f->sequence;
 951         vb->timestamp = f->timestamp;
 952         vb->field = V4L2_FIELD_NONE;
 953         vb->bytesused = f->scanlength;
 954
 955         return 0;
 956 }
 957
 958 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 959 {
 960         struct video_device *dev = video_devdata(file);
 961         struct usb_usbvision *usbvision =
 962                 (struct usb_usbvision *) video_get_drvdata(dev);
 963         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 964
 965         usbvision->streaming = Stream_On;
 966         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 967
 968         return 0;
 969 }
 970
 971 static int vidioc_streamoff(struct file *file,
 972                             void *priv, enum v4l2_buf_type type)
 973 {
 974         struct video_device *dev = video_devdata(file);
 975         struct usb_usbvision *usbvision =
 976                 (struct usb_usbvision *) video_get_drvdata(dev);
 977         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 978
 979         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 980                 return -EINVAL;
 981
 982         if(usbvision->streaming == Stream_On) {
 983                 usbvision_stream_interrupt(usbvision);
 984                 /* Stop all video streamings */
 985                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 986         }
 987         usbvision_empty_framequeues(usbvision);
 988
 989         return 0;
 990 }
 991
 992 static int vidioc_enum_fmt_cap (struct file *file, void  *priv,
 993                                         struct v4l2_fmtdesc *vfd)
 994 {
 995         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 996                 return -EINVAL;
 997         }
 998         vfd->flags = 0;
 999         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1000         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
1001         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
1002         memset(vfd->reserved, 0, sizeof(vfd->reserved));
1003         return 0;
1004 }
1005
1006 static int vidioc_g_fmt_cap (struct file *file, void *priv,
1007                                         struct v4l2_format *vf)
1008 {
1009         struct video_device *dev = video_devdata(file);
1010         struct usb_usbvision *usbvision =
1011                 (struct usb_usbvision *) video_get_drvdata(dev);
1012         vf->fmt.pix.width = usbvision->curwidth;
1013         vf->fmt.pix.height = usbvision->curheight;
1014         vf->fmt.pix.pixelformat = usbvision->palette.format;
1015         vf->fmt.pix.bytesperline =
1016                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1017         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1018         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1019         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1020
1021         return 0;
1022 }
1023
1024 static int vidioc_try_fmt_cap (struct file *file, void *priv,
1025                                struct v4l2_format *vf)
1026 {
1027         struct video_device *dev = video_devdata(file);
1028         struct usb_usbvision *usbvision =
1029                 (struct usb_usbvision *) video_get_drvdata(dev);
1030         int formatIdx;
1031
1032         /* Find requested format in available ones */
1033         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1034                 if(vf->fmt.pix.pixelformat ==
1035                    usbvision_v4l2_format[formatIdx].format) {
1036                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1037                         break;
1038                 }
1039         }
1040         /* robustness */
1041         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1042                 return -EINVAL;
1043         }
1044         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1045         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1046
1047         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1048                 usbvision->palette.bytes_per_pixel;
1049         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1050
1051         return 0;
1052 }
1053
1054 static int vidioc_s_fmt_cap(struct file *file, void *priv,
1055                                struct v4l2_format *vf)
1056 {
1057         struct video_device *dev = video_devdata(file);
1058         struct usb_usbvision *usbvision =
1059                 (struct usb_usbvision *) video_get_drvdata(dev);
1060         int ret;
1061
1062         if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) {
1063                 return ret;
1064         }
1065
1066         /* stop io in case it is already in progress */
1067         if(usbvision->streaming == Stream_On) {
1068                 if ((ret = usbvision_stream_interrupt(usbvision)))
1069                         return ret;
1070         }
1071         usbvision_frames_free(usbvision);
1072         usbvision_empty_framequeues(usbvision);
1073
1074         usbvision->curFrame = NULL;
1075
1076         /* by now we are committed to the new data... */
1077         down(&usbvision->lock);
1078         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1079         up(&usbvision->lock);
1080
1081         return 0;
1082 }
1083
1084 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1085                       size_t count, loff_t *ppos)
1086 {
1087         struct video_device *dev = video_devdata(file);
1088         struct usb_usbvision *usbvision =
1089                 (struct usb_usbvision *) video_get_drvdata(dev);
1090         int noblock = file->f_flags & O_NONBLOCK;
1091         unsigned long lock_flags;
1092
1093         int ret,i;
1094         struct usbvision_frame *frame;
1095
1096         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__,
1097                (unsigned long)count, noblock);
1098
1099         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1100                 return -EFAULT;
1101
1102         /* This entry point is compatible with the mmap routines
1103            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1104            to get frames or call read on the device. */
1105         if(!usbvision->num_frames) {
1106                 /* First, allocate some frames to work with
1107                    if this has not been done with VIDIOC_REQBUF */
1108                 usbvision_frames_free(usbvision);
1109                 usbvision_empty_framequeues(usbvision);
1110                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1111         }
1112
1113         if(usbvision->streaming != Stream_On) {
1114                 /* no stream is running, make it running ! */
1115                 usbvision->streaming = Stream_On;
1116                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1117         }
1118
1119         /* Then, enqueue as many frames as possible
1120            (like a user of VIDIOC_QBUF would do) */
1121         for(i=0;i<usbvision->num_frames;i++) {
1122                 frame = &usbvision->frame[i];
1123                 if(frame->grabstate == FrameState_Unused) {
1124                         /* Mark it as ready and enqueue frame */
1125                         frame->grabstate = FrameState_Ready;
1126                         frame->scanstate = ScanState_Scanning;
1127                         /* Accumulated in usbvision_parse_data() */
1128                         frame->scanlength = 0;
1129
1130                         /* set v4l2_format index */
1131                         frame->v4l2_format = usbvision->palette;
1132
1133                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1134                         list_add_tail(&frame->frame, &usbvision->inqueue);
1135                         spin_unlock_irqrestore(&usbvision->queue_lock,
1136                                                lock_flags);
1137                 }
1138         }
1139
1140         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1141         if (list_empty(&(usbvision->outqueue))) {
1142                 if(noblock)
1143                         return -EAGAIN;
1144
1145                 ret = wait_event_interruptible
1146                         (usbvision->wait_frame,
1147                          !list_empty(&(usbvision->outqueue)));
1148                 if (ret)
1149                         return ret;
1150         }
1151
1152         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1153         frame = list_entry(usbvision->outqueue.next,
1154                            struct usbvision_frame, frame);
1155         list_del(usbvision->outqueue.next);
1156         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1157
1158         /* An error returns an empty frame */
1159         if (frame->grabstate == FrameState_Error) {
1160                 frame->bytes_read = 0;
1161                 return 0;
1162         }
1163
1164         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1165                __FUNCTION__,
1166                frame->index, frame->bytes_read, frame->scanlength);
1167
1168         /* copy bytes to user space; we allow for partials reads */
1169         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1170                 count = frame->scanlength - frame->bytes_read;
1171
1172         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1173                 return -EFAULT;
1174         }
1175
1176         frame->bytes_read += count;
1177         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1178                __FUNCTION__,
1179                (unsigned long)count, frame->bytes_read);
1180
1181         /* For now, forget the frame if it has not been read in one shot. */
1182 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1183                 frame->bytes_read = 0;
1184
1185                 /* Mark it as available to be used again. */
1186                 frame->grabstate = FrameState_Unused;
1187 /*      } */
1188
1189         return count;
1190 }
1191
1192 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1193 {
1194         unsigned long size = vma->vm_end - vma->vm_start,
1195                 start = vma->vm_start;
1196         void *pos;
1197         u32 i;
1198
1199         struct video_device *dev = video_devdata(file);
1200         struct usb_usbvision *usbvision =
1201                 (struct usb_usbvision *) video_get_drvdata(dev);
1202
1203         PDEBUG(DBG_MMAP, "mmap");
1204
1205         down(&usbvision->lock);
1206
1207         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1208                 up(&usbvision->lock);
1209                 return -EFAULT;
1210         }
1211
1212         if (!(vma->vm_flags & VM_WRITE) ||
1213             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1214                 up(&usbvision->lock);
1215                 return -EINVAL;
1216         }
1217
1218         for (i = 0; i < usbvision->num_frames; i++) {
1219                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1220                     vma->vm_pgoff)
1221                         break;
1222         }
1223         if (i == usbvision->num_frames) {
1224                 PDEBUG(DBG_MMAP,
1225                        "mmap: user supplied mapping address is out of range");
1226                 up(&usbvision->lock);
1227                 return -EINVAL;
1228         }
1229
1230         /* VM_IO is eventually going to replace PageReserved altogether */
1231         vma->vm_flags |= VM_IO;
1232         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1233
1234         pos = usbvision->frame[i].data;
1235         while (size > 0) {
1236
1237                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1238                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1239                         up(&usbvision->lock);
1240                         return -EAGAIN;
1241                 }
1242                 start += PAGE_SIZE;
1243                 pos += PAGE_SIZE;
1244                 size -= PAGE_SIZE;
1245         }
1246
1247         up(&usbvision->lock);
1248         return 0;
1249 }
1250
1251
1252 /*
1253  * Here comes the stuff for radio on usbvision based devices
1254  *
1255  */
1256 static int usbvision_radio_open(struct inode *inode, struct file *file)
1257 {
1258         struct video_device *dev = video_devdata(file);
1259         struct usb_usbvision *usbvision =
1260                 (struct usb_usbvision *) video_get_drvdata(dev);
1261         int errCode = 0;
1262
1263         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1264
1265         down(&usbvision->lock);
1266
1267         if (usbvision->user) {
1268                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1269                 errCode = -EBUSY;
1270         }
1271         else {
1272                 if(PowerOnAtOpen) {
1273                         usbvision_reset_powerOffTimer(usbvision);
1274                         if (usbvision->power == 0) {
1275                                 usbvision_power_on(usbvision);
1276                                 usbvision_i2c_register(usbvision);
1277                         }
1278                 }
1279
1280                 /* Alternate interface 1 is is the biggest frame size */
1281                 errCode = usbvision_set_alternate(usbvision);
1282                 if (errCode < 0) {
1283                         usbvision->last_error = errCode;
1284                         return -EBUSY;
1285                 }
1286
1287                 // If so far no errors then we shall start the radio
1288                 usbvision->radio = 1;
1289                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1290                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1291                 usbvision->user++;
1292         }
1293
1294         if (errCode) {
1295                 if (PowerOnAtOpen) {
1296                         usbvision_i2c_unregister(usbvision);
1297                         usbvision_power_off(usbvision);
1298                         usbvision->initialized = 0;
1299                 }
1300         }
1301         up(&usbvision->lock);
1302         return errCode;
1303 }
1304
1305
1306 static int usbvision_radio_close(struct inode *inode, struct file *file)
1307 {
1308         struct video_device *dev = video_devdata(file);
1309         struct usb_usbvision *usbvision =
1310                 (struct usb_usbvision *) video_get_drvdata(dev);
1311         int errCode = 0;
1312
1313         PDEBUG(DBG_IO, "");
1314
1315         down(&usbvision->lock);
1316
1317         /* Set packet size to 0 */
1318         usbvision->ifaceAlt=0;
1319         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1320                                     usbvision->ifaceAlt);
1321
1322         usbvision_audio_off(usbvision);
1323         usbvision->radio=0;
1324         usbvision->user--;
1325
1326         if (PowerOnAtOpen) {
1327                 usbvision_set_powerOffTimer(usbvision);
1328                 usbvision->initialized = 0;
1329         }
1330
1331         up(&usbvision->lock);
1332
1333         if (usbvision->remove_pending) {
1334                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1335                 usbvision_release(usbvision);
1336         }
1337
1338
1339         PDEBUG(DBG_IO, "success");
1340
1341         return errCode;
1342 }
1343
1344 /*
1345  * Here comes the stuff for vbi on usbvision based devices
1346  *
1347  */
1348 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1349 {
1350         /* TODO */
1351         return -ENODEV;
1352
1353 }
1354
1355 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1356 {
1357         /* TODO */
1358         return -ENODEV;
1359 }
1360
1361 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1362                                  unsigned int cmd, void *arg)
1363 {
1364         /* TODO */
1365         return -ENOIOCTLCMD;
1366 }
1367
1368 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1369                        unsigned int cmd, unsigned long arg)
1370 {
1371         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1372 }
1373
1374
1375 //
1376 // Video registration stuff
1377 //
1378
1379 // Video template
1380 static const struct file_operations usbvision_fops = {
1381         .owner             = THIS_MODULE,
1382         .open           = usbvision_v4l2_open,
1383         .release        = usbvision_v4l2_close,
1384         .read           = usbvision_v4l2_read,
1385         .mmap           = usbvision_v4l2_mmap,
1386         .ioctl          = video_ioctl2,
1387         .llseek         = no_llseek,
1388 /*      .poll          = video_poll, */
1389         .mmap          = usbvision_v4l2_mmap,
1390         .compat_ioctl  = v4l_compat_ioctl32,
1391 };
1392 static struct video_device usbvision_video_template = {
1393         .owner             = THIS_MODULE,
1394         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1395         .hardware       = VID_HARDWARE_USBVISION,
1396         .fops           = &usbvision_fops,
1397         .name           = "usbvision-video",
1398         .release        = video_device_release,
1399         .minor          = -1,
1400         .vidioc_querycap      = vidioc_querycap,
1401         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1402         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1403         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1404         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1405         .vidioc_reqbufs       = vidioc_reqbufs,
1406         .vidioc_querybuf      = vidioc_querybuf,
1407         .vidioc_qbuf          = vidioc_qbuf,
1408         .vidioc_dqbuf         = vidioc_dqbuf,
1409         .vidioc_s_std         = vidioc_s_std,
1410         .vidioc_enum_input    = vidioc_enum_input,
1411         .vidioc_g_input       = vidioc_g_input,
1412         .vidioc_s_input       = vidioc_s_input,
1413         .vidioc_queryctrl     = vidioc_queryctrl,
1414         .vidioc_g_audio       = vidioc_g_audio,
1415         .vidioc_g_audio       = vidioc_s_audio,
1416         .vidioc_g_ctrl        = vidioc_g_ctrl,
1417         .vidioc_s_ctrl        = vidioc_s_ctrl,
1418         .vidioc_streamon      = vidioc_streamon,
1419         .vidioc_streamoff     = vidioc_streamoff,
1420 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1421 /*      .vidiocgmbuf          = vidiocgmbuf, */
1422 #endif
1423         .vidioc_g_tuner       = vidioc_g_tuner,
1424         .vidioc_s_tuner       = vidioc_s_tuner,
1425         .vidioc_g_frequency   = vidioc_g_frequency,
1426         .vidioc_s_frequency   = vidioc_s_frequency,
1427 #ifdef CONFIG_VIDEO_ADV_DEBUG
1428         .vidioc_g_register    = vidioc_g_register,
1429         .vidioc_s_register    = vidioc_s_register,
1430 #endif
1431         .tvnorms              = USBVISION_NORMS,
1432         .current_norm         = V4L2_STD_PAL
1433 };
1434
1435
1436 // Radio template
1437 static const struct file_operations usbvision_radio_fops = {
1438         .owner             = THIS_MODULE,
1439         .open           = usbvision_radio_open,
1440         .release        = usbvision_radio_close,
1441         .ioctl          = video_ioctl2,
1442         .llseek         = no_llseek,
1443         .compat_ioctl  = v4l_compat_ioctl32,
1444 };
1445
1446 static struct video_device usbvision_radio_template=
1447 {
1448         .owner             = THIS_MODULE,
1449         .type           = VID_TYPE_TUNER,
1450         .hardware       = VID_HARDWARE_USBVISION,
1451         .fops           = &usbvision_radio_fops,
1452         .name           = "usbvision-radio",
1453         .release        = video_device_release,
1454         .minor          = -1,
1455         .vidioc_querycap      = vidioc_querycap,
1456         .vidioc_enum_input    = vidioc_enum_input,
1457         .vidioc_g_input       = vidioc_g_input,
1458         .vidioc_s_input       = vidioc_s_input,
1459         .vidioc_queryctrl     = vidioc_queryctrl,
1460         .vidioc_g_audio       = vidioc_g_audio,
1461         .vidioc_g_audio       = vidioc_s_audio,
1462         .vidioc_g_ctrl        = vidioc_g_ctrl,
1463         .vidioc_s_ctrl        = vidioc_s_ctrl,
1464         .vidioc_g_tuner       = vidioc_g_tuner,
1465         .vidioc_s_tuner       = vidioc_s_tuner,
1466         .vidioc_g_frequency   = vidioc_g_frequency,
1467         .vidioc_s_frequency   = vidioc_s_frequency,
1468
1469         .tvnorms              = USBVISION_NORMS,
1470         .current_norm         = V4L2_STD_PAL
1471 };
1472
1473 // vbi template
1474 static const struct file_operations usbvision_vbi_fops = {
1475         .owner             = THIS_MODULE,
1476         .open           = usbvision_vbi_open,
1477         .release        = usbvision_vbi_close,
1478         .ioctl          = usbvision_vbi_ioctl,
1479         .llseek         = no_llseek,
1480         .compat_ioctl  = v4l_compat_ioctl32,
1481 };
1482
1483 static struct video_device usbvision_vbi_template=
1484 {
1485         .owner             = THIS_MODULE,
1486         .type           = VID_TYPE_TUNER,
1487         .hardware       = VID_HARDWARE_USBVISION,
1488         .fops           = &usbvision_vbi_fops,
1489         .release        = video_device_release,
1490         .name           = "usbvision-vbi",
1491         .minor          = -1,
1492 };
1493
1494
1495 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1496                                         struct video_device *vdev_template,
1497                                         char *name)
1498 {
1499         struct usb_device *usb_dev = usbvision->dev;
1500         struct video_device *vdev;
1501
1502         if (usb_dev == NULL) {
1503                 err("%s: usbvision->dev is not set", __FUNCTION__);
1504                 return NULL;
1505         }
1506
1507         vdev = video_device_alloc();
1508         if (NULL == vdev) {
1509                 return NULL;
1510         }
1511         *vdev = *vdev_template;
1512 //      vdev->minor   = -1;
1513         vdev->dev     = &usb_dev->dev;
1514         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1515         video_set_drvdata(vdev, usbvision);
1516         return vdev;
1517 }
1518
1519 // unregister video4linux devices
1520 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1521 {
1522         // vbi Device:
1523         if (usbvision->vbi) {
1524                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1525                        usbvision->vbi->minor & 0x1f);
1526                 if (usbvision->vbi->minor != -1) {
1527                         video_unregister_device(usbvision->vbi);
1528                 } else {
1529                         video_device_release(usbvision->vbi);
1530                 }
1531                 usbvision->vbi = NULL;
1532         }
1533
1534         // Radio Device:
1535         if (usbvision->rdev) {
1536                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1537                        usbvision->rdev->minor & 0x1f);
1538                 if (usbvision->rdev->minor != -1) {
1539                         video_unregister_device(usbvision->rdev);
1540                 } else {
1541                         video_device_release(usbvision->rdev);
1542                 }
1543                 usbvision->rdev = NULL;
1544         }
1545
1546         // Video Device:
1547         if (usbvision->vdev) {
1548                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1549                        usbvision->vdev->minor & 0x1f);
1550                 if (usbvision->vdev->minor != -1) {
1551                         video_unregister_device(usbvision->vdev);
1552                 } else {
1553                         video_device_release(usbvision->vdev);
1554                 }
1555                 usbvision->vdev = NULL;
1556         }
1557 }
1558
1559 // register video4linux devices
1560 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1561 {
1562         // Video Device:
1563         usbvision->vdev = usbvision_vdev_init(usbvision,
1564                                               &usbvision_video_template,
1565                                               "USBVision Video");
1566         if (usbvision->vdev == NULL) {
1567                 goto err_exit;
1568         }
1569         if (video_register_device(usbvision->vdev,
1570                                   VFL_TYPE_GRABBER,
1571                                   video_nr)<0) {
1572                 goto err_exit;
1573         }
1574         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1575                usbvision->nr,usbvision->vdev->minor & 0x1f);
1576
1577         // Radio Device:
1578         if (usbvision_device_data[usbvision->DevModel].Radio) {
1579                 // usbvision has radio
1580                 usbvision->rdev = usbvision_vdev_init(usbvision,
1581                                                       &usbvision_radio_template,
1582                                                       "USBVision Radio");
1583                 if (usbvision->rdev == NULL) {
1584                         goto err_exit;
1585                 }
1586                 if (video_register_device(usbvision->rdev,
1587                                           VFL_TYPE_RADIO,
1588                                           radio_nr)<0) {
1589                         goto err_exit;
1590                 }
1591                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1592                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1593         }
1594         // vbi Device:
1595         if (usbvision_device_data[usbvision->DevModel].vbi) {
1596                 usbvision->vbi = usbvision_vdev_init(usbvision,
1597                                                      &usbvision_vbi_template,
1598                                                      "USBVision VBI");
1599                 if (usbvision->vdev == NULL) {
1600                         goto err_exit;
1601                 }
1602                 if (video_register_device(usbvision->vbi,
1603                                           VFL_TYPE_VBI,
1604                                           vbi_nr)<0) {
1605                         goto err_exit;
1606                 }
1607                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1608                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1609         }
1610         // all done
1611         return 0;
1612
1613  err_exit:
1614         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1615         usbvision_unregister_video(usbvision);
1616         return -1;
1617 }
1618
1619 /*
1620  * usbvision_alloc()
1621  *
1622  * This code allocates the struct usb_usbvision.
1623  * It is filled with default values.
1624  *
1625  * Returns NULL on error, a pointer to usb_usbvision else.
1626  *
1627  */
1628 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1629 {
1630         struct usb_usbvision *usbvision;
1631
1632         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1633             NULL) {
1634                 goto err_exit;
1635         }
1636
1637         usbvision->dev = dev;
1638
1639         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1640
1641         // prepare control urb for control messages during interrupts
1642         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1643         if (usbvision->ctrlUrb == NULL) {
1644                 goto err_exit;
1645         }
1646         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1647         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1648
1649         usbvision_init_powerOffTimer(usbvision);
1650
1651         return usbvision;
1652
1653 err_exit:
1654         if (usbvision && usbvision->ctrlUrb) {
1655                 usb_free_urb(usbvision->ctrlUrb);
1656         }
1657         if (usbvision) {
1658                 kfree(usbvision);
1659         }
1660         return NULL;
1661 }
1662
1663 /*
1664  * usbvision_release()
1665  *
1666  * This code does final release of struct usb_usbvision. This happens
1667  * after the device is disconnected -and- all clients closed their files.
1668  *
1669  */
1670 static void usbvision_release(struct usb_usbvision *usbvision)
1671 {
1672         PDEBUG(DBG_PROBE, "");
1673
1674         down(&usbvision->lock);
1675
1676         usbvision_reset_powerOffTimer(usbvision);
1677
1678         usbvision->initialized = 0;
1679
1680         up(&usbvision->lock);
1681
1682         usbvision_remove_sysfs(usbvision->vdev);
1683         usbvision_unregister_video(usbvision);
1684
1685         if (usbvision->ctrlUrb) {
1686                 usb_free_urb(usbvision->ctrlUrb);
1687         }
1688
1689         kfree(usbvision);
1690
1691         PDEBUG(DBG_PROBE, "success");
1692 }
1693
1694
1695 /*********************** usb interface **********************************/
1696
1697 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1698 {
1699         int model;
1700
1701         if (usbvision == NULL)
1702                 return;
1703
1704         model = usbvision->DevModel;
1705         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1706
1707         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1708                 usbvision->Vin_Reg2_Preset =
1709                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1710         } else {
1711                 usbvision->Vin_Reg2_Preset = 0;
1712         }
1713
1714         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1715
1716         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1717         usbvision->ctl_input = 0;
1718
1719         /* This should be here to make i2c clients to be able to register */
1720         /* first switch off audio */
1721         usbvision_audio_off(usbvision);
1722         if (!PowerOnAtOpen) {
1723                 /* and then power up the noisy tuner */
1724                 usbvision_power_on(usbvision);
1725                 usbvision_i2c_register(usbvision);
1726         }
1727 }
1728
1729 /*
1730  * usbvision_probe()
1731  *
1732  * This procedure queries device descriptor and accepts the interface
1733  * if it looks like USBVISION video device
1734  *
1735  */
1736 static int __devinit usbvision_probe(struct usb_interface *intf,
1737                                      const struct usb_device_id *devid)
1738 {
1739         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1740         struct usb_interface *uif;
1741         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1742         const struct usb_host_interface *interface;
1743         struct usb_usbvision *usbvision = NULL;
1744         const struct usb_endpoint_descriptor *endpoint;
1745         int model,i;
1746
1747         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1748                                 dev->descriptor.idVendor,
1749                                 dev->descriptor.idProduct, ifnum);
1750
1751         model = devid->driver_info;
1752         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1753                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1754                 return -ENODEV;
1755         }
1756         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1757                                 usbvision_device_data[model].ModelString);
1758
1759         if (usbvision_device_data[model].Interface >= 0) {
1760                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1761         } else {
1762                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1763         }
1764         endpoint = &interface->endpoint[1].desc;
1765         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1766             USB_ENDPOINT_XFER_ISOC) {
1767                 err("%s: interface %d. has non-ISO endpoint!",
1768                     __FUNCTION__, ifnum);
1769                 err("%s: Endpoint attributes %d",
1770                     __FUNCTION__, endpoint->bmAttributes);
1771                 return -ENODEV;
1772         }
1773         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1774             USB_DIR_OUT) {
1775                 err("%s: interface %d. has ISO OUT endpoint!",
1776                     __FUNCTION__, ifnum);
1777                 return -ENODEV;
1778         }
1779
1780         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1781                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1782                 return -ENOMEM;
1783         }
1784
1785         if (dev->descriptor.bNumConfigurations > 1) {
1786                 usbvision->bridgeType = BRIDGE_NT1004;
1787         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1788                 usbvision->bridgeType = BRIDGE_NT1005;
1789         } else {
1790                 usbvision->bridgeType = BRIDGE_NT1003;
1791         }
1792         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1793
1794         down(&usbvision->lock);
1795
1796         /* compute alternate max packet sizes */
1797         uif = dev->actconfig->interface[0];
1798
1799         usbvision->num_alt=uif->num_altsetting;
1800         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1801         usbvision->alt_max_pkt_size = kmalloc(32*
1802                                               usbvision->num_alt,GFP_KERNEL);
1803         if (usbvision->alt_max_pkt_size == NULL) {
1804                 err("usbvision: out of memory!\n");
1805                 return -ENOMEM;
1806         }
1807
1808         for (i = 0; i < usbvision->num_alt ; i++) {
1809                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1810                                       wMaxPacketSize);
1811                 usbvision->alt_max_pkt_size[i] =
1812                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1813                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1814                        usbvision->alt_max_pkt_size[i]);
1815         }
1816
1817
1818         usbvision->nr = usbvision_nr++;
1819
1820         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1821         if (usbvision->have_tuner) {
1822                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1823         }
1824
1825         usbvision->tuner_addr = ADDR_UNSET;
1826
1827         usbvision->DevModel = model;
1828         usbvision->remove_pending = 0;
1829         usbvision->iface = ifnum;
1830         usbvision->ifaceAlt = 0;
1831         usbvision->video_endp = endpoint->bEndpointAddress;
1832         usbvision->isocPacketSize = 0;
1833         usbvision->usb_bandwidth = 0;
1834         usbvision->user = 0;
1835         usbvision->streaming = Stream_Off;
1836         usbvision_register_video(usbvision);
1837         usbvision_configure_video(usbvision);
1838         up(&usbvision->lock);
1839
1840
1841         usb_set_intfdata (intf, usbvision);
1842         usbvision_create_sysfs(usbvision->vdev);
1843
1844         PDEBUG(DBG_PROBE, "success");
1845         return 0;
1846 }
1847
1848
1849 /*
1850  * usbvision_disconnect()
1851  *
1852  * This procedure stops all driver activity, deallocates interface-private
1853  * structure (pointed by 'ptr') and after that driver should be removable
1854  * with no ill consequences.
1855  *
1856  */
1857 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1858 {
1859         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1860
1861         PDEBUG(DBG_PROBE, "");
1862
1863         if (usbvision == NULL) {
1864                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1865                 return;
1866         }
1867         usb_set_intfdata (intf, NULL);
1868
1869         down(&usbvision->lock);
1870
1871         // At this time we ask to cancel outstanding URBs
1872         usbvision_stop_isoc(usbvision);
1873
1874         if (usbvision->power) {
1875                 usbvision_i2c_unregister(usbvision);
1876                 usbvision_power_off(usbvision);
1877         }
1878         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1879
1880         usb_put_dev(usbvision->dev);
1881         usbvision->dev = NULL;  // USB device is no more
1882
1883         up(&usbvision->lock);
1884
1885         if (usbvision->user) {
1886                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1887                        __FUNCTION__);
1888                 wake_up_interruptible(&usbvision->wait_frame);
1889                 wake_up_interruptible(&usbvision->wait_stream);
1890         } else {
1891                 usbvision_release(usbvision);
1892         }
1893
1894         PDEBUG(DBG_PROBE, "success");
1895
1896 }
1897
1898 static struct usb_driver usbvision_driver = {
1899         .name           = "usbvision",
1900         .id_table       = usbvision_table,
1901         .probe          = usbvision_probe,
1902         .disconnect     = usbvision_disconnect
1903 };
1904
1905 /*
1906  * usbvision_init()
1907  *
1908  * This code is run to initialize the driver.
1909  *
1910  */
1911 static int __init usbvision_init(void)
1912 {
1913         int errCode;
1914
1915         PDEBUG(DBG_PROBE, "");
1916
1917         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1918         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1919         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1920
1921         /* disable planar mode support unless compression enabled */
1922         if (isocMode != ISOC_MODE_COMPRESS ) {
1923                 // FIXME : not the right way to set supported flag
1924                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1925                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1926         }
1927
1928         errCode = usb_register(&usbvision_driver);
1929
1930         if (errCode == 0) {
1931                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1932                 PDEBUG(DBG_PROBE, "success");
1933         }
1934         return errCode;
1935 }
1936
1937 static void __exit usbvision_exit(void)
1938 {
1939  PDEBUG(DBG_PROBE, "");
1940
1941  usb_deregister(&usbvision_driver);
1942  PDEBUG(DBG_PROBE, "success");
1943 }
1944
1945 module_init(usbvision_init);
1946 module_exit(usbvision_exit);
1947
1948 /*
1949  * Overrides for Emacs so that we follow Linus's tabbing style.
1950  * ---------------------------------------------------------------------------
1951  * Local variables:
1952  * c-basic-offset: 8
1953  * End:
1954  */