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/workqueue.h>
  72
  73 #ifdef CONFIG_KMOD
  74 #include <linux/kmod.h>
  75 #endif
  76
  77 #include "usbvision.h"
  78 #include "usbvision-cards.h"
  79
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  81  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,\
  90 USBVISION_DRIVER_VERSION_MINOR,\
  91 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  92 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  93  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  94  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  95
  96 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  97
  98
  99 #ifdef USBVISION_DEBUG
 100         #define PDEBUG(level, fmt, args...) \
 101                 if (video_debug & (level)) \
 102                         info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\
 103                                 ## args)
 104 #else
 105         #define PDEBUG(level, fmt, args...) do {} while(0)
 106 #endif
 107
 108 #define DBG_IO          1<<1
 109 #define DBG_PROBE       1<<2
 110 #define DBG_MMAP        1<<3
 111
 112 //String operations
 113 #define rmspace(str)    while(*str==' ') str++;
 114 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 115
 116
 117 /* sequential number of usbvision device */
 118 static int usbvision_nr = 0;
 119
 120 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 121         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 122         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 123         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 124         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 125         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 126         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 127         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 128         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 129 };
 130
 131 /* Function prototypes */
 132 static void usbvision_release(struct usb_usbvision *usbvision);
 133
 134 /* Default initalization of device driver parameters */
 135 /* Set the default format for ISOC endpoint */
 136 static int isocMode = ISOC_MODE_COMPRESS;
 137 /* Set the default Debug Mode of the device driver */
 138 static int video_debug = 0;
 139 /* Set the default device to power on at startup */
 140 static int PowerOnAtOpen = 1;
 141 /* Sequential Number of Video Device */
 142 static int video_nr = -1;
 143 /* Sequential Number of Radio Device */
 144 static int radio_nr = -1;
 145 /* Sequential Number of VBI Device */
 146 static int vbi_nr = -1;
 147
 148 /* Grab parameters for the device driver */
 149
 150 /* Showing parameters under SYSFS */
 151 module_param(isocMode, int, 0444);
 152 module_param(video_debug, int, 0444);
 153 module_param(PowerOnAtOpen, int, 0444);
 154 module_param(video_nr, int, 0444);
 155 module_param(radio_nr, int, 0444);
 156 module_param(vbi_nr, int, 0444);
 157
 158 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 159 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 160 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 161 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 162 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 164
 165
 166 // Misc stuff
 167 MODULE_AUTHOR(DRIVER_AUTHOR);
 168 MODULE_DESCRIPTION(DRIVER_DESC);
 169 MODULE_LICENSE(DRIVER_LICENSE);
 170 MODULE_VERSION(USBVISION_VERSION_STRING);
 171 MODULE_ALIAS(DRIVER_ALIAS);
 172
 173
 174 /*****************************************************************************/
 175 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 176 /* Device information is located at /sys/class/video4linux/video0            */
 177 /* Device parameters information is located at /sys/module/usbvision         */
 178 /* Device USB Information is located at                                      */
 179 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 180 /*****************************************************************************/
 181
 182
 183 #define YES_NO(x) ((x) ? "Yes" : "No")
 184
 185 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 186 {
 187         struct video_device *vdev =
 188                 container_of(cd, struct video_device, class_dev);
 189         return video_get_drvdata(vdev);
 190 }
 191
 192 static ssize_t show_version(struct class_device *cd, char *buf)
 193 {
 194         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 195 }
 196 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 197
 198 static ssize_t show_model(struct class_device *cd, char *buf)
 199 {
 200         struct video_device *vdev =
 201                 container_of(cd, struct video_device, class_dev);
 202         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 203         return sprintf(buf, "%s\n",
 204                        usbvision_device_data[usbvision->DevModel].ModelString);
 205 }
 206 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 207
 208 static ssize_t show_hue(struct class_device *cd, char *buf)
 209 {
 210         struct video_device *vdev =
 211                 container_of(cd, struct video_device, class_dev);
 212         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 213         struct v4l2_control ctrl;
 214         ctrl.id = V4L2_CID_HUE;
 215         ctrl.value = 0;
 216         if(usbvision->user)
 217                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 218         return sprintf(buf, "%d\n", ctrl.value);
 219 }
 220 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 221
 222 static ssize_t show_contrast(struct class_device *cd, char *buf)
 223 {
 224         struct video_device *vdev =
 225                 container_of(cd, struct video_device, class_dev);
 226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 227         struct v4l2_control ctrl;
 228         ctrl.id = V4L2_CID_CONTRAST;
 229         ctrl.value = 0;
 230         if(usbvision->user)
 231                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 232         return sprintf(buf, "%d\n", ctrl.value);
 233 }
 234 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 235
 236 static ssize_t show_brightness(struct class_device *cd, char *buf)
 237 {
 238         struct video_device *vdev =
 239                 container_of(cd, struct video_device, class_dev);
 240         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 241         struct v4l2_control ctrl;
 242         ctrl.id = V4L2_CID_BRIGHTNESS;
 243         ctrl.value = 0;
 244         if(usbvision->user)
 245                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 246         return sprintf(buf, "%d\n", ctrl.value);
 247 }
 248 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 249
 250 static ssize_t show_saturation(struct class_device *cd, char *buf)
 251 {
 252         struct video_device *vdev =
 253                 container_of(cd, struct video_device, class_dev);
 254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 255         struct v4l2_control ctrl;
 256         ctrl.id = V4L2_CID_SATURATION;
 257         ctrl.value = 0;
 258         if(usbvision->user)
 259                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 260         return sprintf(buf, "%d\n", ctrl.value);
 261 }
 262 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 263
 264 static ssize_t show_streaming(struct class_device *cd, char *buf)
 265 {
 266         struct video_device *vdev =
 267                 container_of(cd, struct video_device, class_dev);
 268         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 269         return sprintf(buf, "%s\n",
 270                        YES_NO(usbvision->streaming==Stream_On?1:0));
 271 }
 272 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 273
 274 static ssize_t show_compression(struct class_device *cd, char *buf)
 275 {
 276         struct video_device *vdev =
 277                 container_of(cd, struct video_device, class_dev);
 278         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 279         return sprintf(buf, "%s\n",
 280                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 281 }
 282 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 283
 284 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 285 {
 286         struct video_device *vdev =
 287                 container_of(cd, struct video_device, class_dev);
 288         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 289         return sprintf(buf, "%d\n", usbvision->bridgeType);
 290 }
 291 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 292
 293 static void usbvision_create_sysfs(struct video_device *vdev)
 294 {
 295         int res;
 296         if (!vdev)
 297                 return;
 298         do {
 299                 res=class_device_create_file(&vdev->class_dev,
 300                                              &class_device_attr_version);
 301                 if (res<0)
 302                         break;
 303                 res=class_device_create_file(&vdev->class_dev,
 304                                              &class_device_attr_model);
 305                 if (res<0)
 306                         break;
 307                 res=class_device_create_file(&vdev->class_dev,
 308                                              &class_device_attr_hue);
 309                 if (res<0)
 310                         break;
 311                 res=class_device_create_file(&vdev->class_dev,
 312                                              &class_device_attr_contrast);
 313                 if (res<0)
 314                         break;
 315                 res=class_device_create_file(&vdev->class_dev,
 316                                              &class_device_attr_brightness);
 317                 if (res<0)
 318                         break;
 319                 res=class_device_create_file(&vdev->class_dev,
 320                                              &class_device_attr_saturation);
 321                 if (res<0)
 322                         break;
 323                 res=class_device_create_file(&vdev->class_dev,
 324                                              &class_device_attr_streaming);
 325                 if (res<0)
 326                         break;
 327                 res=class_device_create_file(&vdev->class_dev,
 328                                              &class_device_attr_compression);
 329                 if (res<0)
 330                         break;
 331                 res=class_device_create_file(&vdev->class_dev,
 332                                              &class_device_attr_bridge);
 333                 if (res>=0)
 334                         return;
 335         } while (0);
 336
 337         err("%s error: %d\n", __FUNCTION__, res);
 338 }
 339
 340 static void usbvision_remove_sysfs(struct video_device *vdev)
 341 {
 342         if (vdev) {
 343                 class_device_remove_file(&vdev->class_dev,
 344                                          &class_device_attr_version);
 345                 class_device_remove_file(&vdev->class_dev,
 346                                          &class_device_attr_model);
 347                 class_device_remove_file(&vdev->class_dev,
 348                                          &class_device_attr_hue);
 349                 class_device_remove_file(&vdev->class_dev,
 350                                          &class_device_attr_contrast);
 351                 class_device_remove_file(&vdev->class_dev,
 352                                          &class_device_attr_brightness);
 353                 class_device_remove_file(&vdev->class_dev,
 354                                          &class_device_attr_saturation);
 355                 class_device_remove_file(&vdev->class_dev,
 356                                          &class_device_attr_streaming);
 357                 class_device_remove_file(&vdev->class_dev,
 358                                          &class_device_attr_compression);
 359                 class_device_remove_file(&vdev->class_dev,
 360                                          &class_device_attr_bridge);
 361         }
 362 }
 363
 364
 365 /*
 366  * usbvision_open()
 367  *
 368  * This is part of Video 4 Linux API. The driver can be opened by one
 369  * client only (checks internal counter 'usbvision->user'). The procedure
 370  * then allocates buffers needed for video processing.
 371  *
 372  */
 373 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 374 {
 375         struct video_device *dev = video_devdata(file);
 376         struct usb_usbvision *usbvision =
 377                 (struct usb_usbvision *) video_get_drvdata(dev);
 378         int errCode = 0;
 379
 380         PDEBUG(DBG_IO, "open");
 381
 382
 383         usbvision_reset_powerOffTimer(usbvision);
 384
 385         if (usbvision->user)
 386                 errCode = -EBUSY;
 387         else {
 388                 /* Allocate memory for the scratch ring buffer */
 389                 errCode = usbvision_scratch_alloc(usbvision);
 390                 if (isocMode==ISOC_MODE_COMPRESS) {
 391                         /* Allocate intermediate decompression buffers
 392                            only if needed */
 393                         errCode = usbvision_decompress_alloc(usbvision);
 394                 }
 395                 if (errCode) {
 396                         /* Deallocate all buffers if trouble */
 397                         usbvision_scratch_free(usbvision);
 398                         usbvision_decompress_free(usbvision);
 399                 }
 400         }
 401
 402         /* If so far no errors then we shall start the camera */
 403         if (!errCode) {
 404                 down(&usbvision->lock);
 405                 if (usbvision->power == 0) {
 406                         usbvision_power_on(usbvision);
 407                         usbvision_i2c_register(usbvision);
 408                 }
 409
 410                 /* Send init sequence only once, it's large! */
 411                 if (!usbvision->initialized) {
 412                         int setup_ok = 0;
 413                         setup_ok = usbvision_setup(usbvision,isocMode);
 414                         if (setup_ok)
 415                                 usbvision->initialized = 1;
 416                         else
 417                                 errCode = -EBUSY;
 418                 }
 419
 420                 if (!errCode) {
 421                         usbvision_begin_streaming(usbvision);
 422                         errCode = usbvision_init_isoc(usbvision);
 423                         /* device must be initialized before isoc transfer */
 424                         usbvision_muxsel(usbvision,0);
 425                         usbvision->user++;
 426                 } else {
 427                         if (PowerOnAtOpen) {
 428                                 usbvision_i2c_unregister(usbvision);
 429                                 usbvision_power_off(usbvision);
 430                                 usbvision->initialized = 0;
 431                         }
 432                 }
 433                 up(&usbvision->lock);
 434         }
 435
 436         if (errCode) {
 437         }
 438
 439         /* prepare queues */
 440         usbvision_empty_framequeues(usbvision);
 441
 442         PDEBUG(DBG_IO, "success");
 443         return errCode;
 444 }
 445
 446 /*
 447  * usbvision_v4l2_close()
 448  *
 449  * This is part of Video 4 Linux API. The procedure
 450  * stops streaming and deallocates all buffers that were earlier
 451  * allocated in usbvision_v4l2_open().
 452  *
 453  */
 454 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 455 {
 456         struct video_device *dev = video_devdata(file);
 457         struct usb_usbvision *usbvision =
 458                 (struct usb_usbvision *) video_get_drvdata(dev);
 459
 460         PDEBUG(DBG_IO, "close");
 461         down(&usbvision->lock);
 462
 463         usbvision_audio_off(usbvision);
 464         usbvision_restart_isoc(usbvision);
 465         usbvision_stop_isoc(usbvision);
 466
 467         usbvision_decompress_free(usbvision);
 468         usbvision_frames_free(usbvision);
 469         usbvision_empty_framequeues(usbvision);
 470         usbvision_scratch_free(usbvision);
 471
 472         usbvision->user--;
 473
 474         if (PowerOnAtOpen) {
 475                 /* power off in a little while
 476                    to avoid off/on every close/open short sequences */
 477                 usbvision_set_powerOffTimer(usbvision);
 478                 usbvision->initialized = 0;
 479         }
 480
 481         up(&usbvision->lock);
 482
 483         if (usbvision->remove_pending) {
 484                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 485                 usbvision_release(usbvision);
 486         }
 487
 488         PDEBUG(DBG_IO, "success");
 489
 490
 491         return 0;
 492 }
 493
 494
 495 /*
 496  * usbvision_ioctl()
 497  *
 498  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 499  *
 500  */
 501 #ifdef CONFIG_VIDEO_ADV_DEBUG
 502 static int vidioc_g_register (struct file *file, void *priv,
 503                                 struct v4l2_register *reg)
 504 {
 505         struct video_device *dev = video_devdata(file);
 506         struct usb_usbvision *usbvision =
 507                 (struct usb_usbvision *) video_get_drvdata(dev);
 508         int errCode;
 509
 510         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 511                 return -EINVAL;
 512         /* NT100x has a 8-bit register space */
 513         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 514         if (errCode < 0) {
 515                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 516                     __FUNCTION__, errCode);
 517                 return errCode;
 518         }
 519         reg->val = errCode;
 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         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 535         if (errCode < 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         .compat_ioctl  = v4l_compat_ioctl32,
1390 };
1391 static struct video_device usbvision_video_template = {
1392         .owner             = THIS_MODULE,
1393         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1394         .hardware       = VID_HARDWARE_USBVISION,
1395         .fops           = &usbvision_fops,
1396         .name           = "usbvision-video",
1397         .release        = video_device_release,
1398         .minor          = -1,
1399         .vidioc_querycap      = vidioc_querycap,
1400         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1401         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1402         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1403         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1404         .vidioc_reqbufs       = vidioc_reqbufs,
1405         .vidioc_querybuf      = vidioc_querybuf,
1406         .vidioc_qbuf          = vidioc_qbuf,
1407         .vidioc_dqbuf         = vidioc_dqbuf,
1408         .vidioc_s_std         = vidioc_s_std,
1409         .vidioc_enum_input    = vidioc_enum_input,
1410         .vidioc_g_input       = vidioc_g_input,
1411         .vidioc_s_input       = vidioc_s_input,
1412         .vidioc_queryctrl     = vidioc_queryctrl,
1413         .vidioc_g_audio       = vidioc_g_audio,
1414         .vidioc_s_audio       = vidioc_s_audio,
1415         .vidioc_g_ctrl        = vidioc_g_ctrl,
1416         .vidioc_s_ctrl        = vidioc_s_ctrl,
1417         .vidioc_streamon      = vidioc_streamon,
1418         .vidioc_streamoff     = vidioc_streamoff,
1419 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1420 /*      .vidiocgmbuf          = vidiocgmbuf, */
1421 #endif
1422         .vidioc_g_tuner       = vidioc_g_tuner,
1423         .vidioc_s_tuner       = vidioc_s_tuner,
1424         .vidioc_g_frequency   = vidioc_g_frequency,
1425         .vidioc_s_frequency   = vidioc_s_frequency,
1426 #ifdef CONFIG_VIDEO_ADV_DEBUG
1427         .vidioc_g_register    = vidioc_g_register,
1428         .vidioc_s_register    = vidioc_s_register,
1429 #endif
1430         .tvnorms              = USBVISION_NORMS,
1431         .current_norm         = V4L2_STD_PAL
1432 };
1433
1434
1435 // Radio template
1436 static const struct file_operations usbvision_radio_fops = {
1437         .owner             = THIS_MODULE,
1438         .open           = usbvision_radio_open,
1439         .release        = usbvision_radio_close,
1440         .ioctl          = video_ioctl2,
1441         .llseek         = no_llseek,
1442         .compat_ioctl  = v4l_compat_ioctl32,
1443 };
1444
1445 static struct video_device usbvision_radio_template=
1446 {
1447         .owner             = THIS_MODULE,
1448         .type           = VID_TYPE_TUNER,
1449         .hardware       = VID_HARDWARE_USBVISION,
1450         .fops           = &usbvision_radio_fops,
1451         .name           = "usbvision-radio",
1452         .release        = video_device_release,
1453         .minor          = -1,
1454         .vidioc_querycap      = vidioc_querycap,
1455         .vidioc_enum_input    = vidioc_enum_input,
1456         .vidioc_g_input       = vidioc_g_input,
1457         .vidioc_s_input       = vidioc_s_input,
1458         .vidioc_queryctrl     = vidioc_queryctrl,
1459         .vidioc_g_audio       = vidioc_g_audio,
1460         .vidioc_s_audio       = vidioc_s_audio,
1461         .vidioc_g_ctrl        = vidioc_g_ctrl,
1462         .vidioc_s_ctrl        = vidioc_s_ctrl,
1463         .vidioc_g_tuner       = vidioc_g_tuner,
1464         .vidioc_s_tuner       = vidioc_s_tuner,
1465         .vidioc_g_frequency   = vidioc_g_frequency,
1466         .vidioc_s_frequency   = vidioc_s_frequency,
1467
1468         .tvnorms              = USBVISION_NORMS,
1469         .current_norm         = V4L2_STD_PAL
1470 };
1471
1472 // vbi template
1473 static const struct file_operations usbvision_vbi_fops = {
1474         .owner             = THIS_MODULE,
1475         .open           = usbvision_vbi_open,
1476         .release        = usbvision_vbi_close,
1477         .ioctl          = usbvision_vbi_ioctl,
1478         .llseek         = no_llseek,
1479         .compat_ioctl  = v4l_compat_ioctl32,
1480 };
1481
1482 static struct video_device usbvision_vbi_template=
1483 {
1484         .owner             = THIS_MODULE,
1485         .type           = VID_TYPE_TUNER,
1486         .hardware       = VID_HARDWARE_USBVISION,
1487         .fops           = &usbvision_vbi_fops,
1488         .release        = video_device_release,
1489         .name           = "usbvision-vbi",
1490         .minor          = -1,
1491 };
1492
1493
1494 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1495                                         struct video_device *vdev_template,
1496                                         char *name)
1497 {
1498         struct usb_device *usb_dev = usbvision->dev;
1499         struct video_device *vdev;
1500
1501         if (usb_dev == NULL) {
1502                 err("%s: usbvision->dev is not set", __FUNCTION__);
1503                 return NULL;
1504         }
1505
1506         vdev = video_device_alloc();
1507         if (NULL == vdev) {
1508                 return NULL;
1509         }
1510         *vdev = *vdev_template;
1511 //      vdev->minor   = -1;
1512         vdev->dev     = &usb_dev->dev;
1513         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1514         video_set_drvdata(vdev, usbvision);
1515         return vdev;
1516 }
1517
1518 // unregister video4linux devices
1519 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1520 {
1521         // vbi Device:
1522         if (usbvision->vbi) {
1523                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1524                        usbvision->vbi->minor & 0x1f);
1525                 if (usbvision->vbi->minor != -1) {
1526                         video_unregister_device(usbvision->vbi);
1527                 } else {
1528                         video_device_release(usbvision->vbi);
1529                 }
1530                 usbvision->vbi = NULL;
1531         }
1532
1533         // Radio Device:
1534         if (usbvision->rdev) {
1535                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1536                        usbvision->rdev->minor & 0x1f);
1537                 if (usbvision->rdev->minor != -1) {
1538                         video_unregister_device(usbvision->rdev);
1539                 } else {
1540                         video_device_release(usbvision->rdev);
1541                 }
1542                 usbvision->rdev = NULL;
1543         }
1544
1545         // Video Device:
1546         if (usbvision->vdev) {
1547                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1548                        usbvision->vdev->minor & 0x1f);
1549                 if (usbvision->vdev->minor != -1) {
1550                         video_unregister_device(usbvision->vdev);
1551                 } else {
1552                         video_device_release(usbvision->vdev);
1553                 }
1554                 usbvision->vdev = NULL;
1555         }
1556 }
1557
1558 // register video4linux devices
1559 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1560 {
1561         // Video Device:
1562         usbvision->vdev = usbvision_vdev_init(usbvision,
1563                                               &usbvision_video_template,
1564                                               "USBVision Video");
1565         if (usbvision->vdev == NULL) {
1566                 goto err_exit;
1567         }
1568         if (video_register_device(usbvision->vdev,
1569                                   VFL_TYPE_GRABBER,
1570                                   video_nr)<0) {
1571                 goto err_exit;
1572         }
1573         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1574                usbvision->nr,usbvision->vdev->minor & 0x1f);
1575
1576         // Radio Device:
1577         if (usbvision_device_data[usbvision->DevModel].Radio) {
1578                 // usbvision has radio
1579                 usbvision->rdev = usbvision_vdev_init(usbvision,
1580                                                       &usbvision_radio_template,
1581                                                       "USBVision Radio");
1582                 if (usbvision->rdev == NULL) {
1583                         goto err_exit;
1584                 }
1585                 if (video_register_device(usbvision->rdev,
1586                                           VFL_TYPE_RADIO,
1587                                           radio_nr)<0) {
1588                         goto err_exit;
1589                 }
1590                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1591                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1592         }
1593         // vbi Device:
1594         if (usbvision_device_data[usbvision->DevModel].vbi) {
1595                 usbvision->vbi = usbvision_vdev_init(usbvision,
1596                                                      &usbvision_vbi_template,
1597                                                      "USBVision VBI");
1598                 if (usbvision->vdev == NULL) {
1599                         goto err_exit;
1600                 }
1601                 if (video_register_device(usbvision->vbi,
1602                                           VFL_TYPE_VBI,
1603                                           vbi_nr)<0) {
1604                         goto err_exit;
1605                 }
1606                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1607                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1608         }
1609         // all done
1610         return 0;
1611
1612  err_exit:
1613         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1614         usbvision_unregister_video(usbvision);
1615         return -1;
1616 }
1617
1618 /*
1619  * usbvision_alloc()
1620  *
1621  * This code allocates the struct usb_usbvision.
1622  * It is filled with default values.
1623  *
1624  * Returns NULL on error, a pointer to usb_usbvision else.
1625  *
1626  */
1627 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1628 {
1629         struct usb_usbvision *usbvision;
1630
1631         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1632             NULL) {
1633                 goto err_exit;
1634         }
1635
1636         usbvision->dev = dev;
1637
1638         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1639
1640         // prepare control urb for control messages during interrupts
1641         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1642         if (usbvision->ctrlUrb == NULL) {
1643                 goto err_exit;
1644         }
1645         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1646         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1647
1648         usbvision_init_powerOffTimer(usbvision);
1649
1650         return usbvision;
1651
1652 err_exit:
1653         if (usbvision && usbvision->ctrlUrb) {
1654                 usb_free_urb(usbvision->ctrlUrb);
1655         }
1656         if (usbvision) {
1657                 kfree(usbvision);
1658         }
1659         return NULL;
1660 }
1661
1662 /*
1663  * usbvision_release()
1664  *
1665  * This code does final release of struct usb_usbvision. This happens
1666  * after the device is disconnected -and- all clients closed their files.
1667  *
1668  */
1669 static void usbvision_release(struct usb_usbvision *usbvision)
1670 {
1671         PDEBUG(DBG_PROBE, "");
1672
1673         down(&usbvision->lock);
1674
1675         usbvision_reset_powerOffTimer(usbvision);
1676
1677         usbvision->initialized = 0;
1678
1679         up(&usbvision->lock);
1680
1681         usbvision_remove_sysfs(usbvision->vdev);
1682         usbvision_unregister_video(usbvision);
1683
1684         if (usbvision->ctrlUrb) {
1685                 usb_free_urb(usbvision->ctrlUrb);
1686         }
1687
1688         kfree(usbvision);
1689
1690         PDEBUG(DBG_PROBE, "success");
1691 }
1692
1693
1694 /*********************** usb interface **********************************/
1695
1696 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1697 {
1698         int model;
1699
1700         if (usbvision == NULL)
1701                 return;
1702
1703         model = usbvision->DevModel;
1704         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1705
1706         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1707                 usbvision->Vin_Reg2_Preset =
1708                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1709         } else {
1710                 usbvision->Vin_Reg2_Preset = 0;
1711         }
1712
1713         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1714
1715         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1716         usbvision->ctl_input = 0;
1717
1718         /* This should be here to make i2c clients to be able to register */
1719         /* first switch off audio */
1720         usbvision_audio_off(usbvision);
1721         if (!PowerOnAtOpen) {
1722                 /* and then power up the noisy tuner */
1723                 usbvision_power_on(usbvision);
1724                 usbvision_i2c_register(usbvision);
1725         }
1726 }
1727
1728 /*
1729  * usbvision_probe()
1730  *
1731  * This procedure queries device descriptor and accepts the interface
1732  * if it looks like USBVISION video device
1733  *
1734  */
1735 static int __devinit usbvision_probe(struct usb_interface *intf,
1736                                      const struct usb_device_id *devid)
1737 {
1738         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1739         struct usb_interface *uif;
1740         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1741         const struct usb_host_interface *interface;
1742         struct usb_usbvision *usbvision = NULL;
1743         const struct usb_endpoint_descriptor *endpoint;
1744         int model,i;
1745
1746         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1747                                 dev->descriptor.idVendor,
1748                                 dev->descriptor.idProduct, ifnum);
1749
1750         model = devid->driver_info;
1751         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1752                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1753                 return -ENODEV;
1754         }
1755         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1756                                 usbvision_device_data[model].ModelString);
1757
1758         if (usbvision_device_data[model].Interface >= 0) {
1759                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
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) !=
1765             USB_ENDPOINT_XFER_ISOC) {
1766                 err("%s: interface %d. has non-ISO endpoint!",
1767                     __FUNCTION__, ifnum);
1768                 err("%s: Endpoint attributes %d",
1769                     __FUNCTION__, endpoint->bmAttributes);
1770                 return -ENODEV;
1771         }
1772         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1773             USB_DIR_OUT) {
1774                 err("%s: interface %d. has ISO OUT endpoint!",
1775                     __FUNCTION__, ifnum);
1776                 return -ENODEV;
1777         }
1778
1779         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1780                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1781                 return -ENOMEM;
1782         }
1783
1784         if (dev->descriptor.bNumConfigurations > 1) {
1785                 usbvision->bridgeType = BRIDGE_NT1004;
1786         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1787                 usbvision->bridgeType = BRIDGE_NT1005;
1788         } else {
1789                 usbvision->bridgeType = BRIDGE_NT1003;
1790         }
1791         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1792
1793         down(&usbvision->lock);
1794
1795         /* compute alternate max packet sizes */
1796         uif = dev->actconfig->interface[0];
1797
1798         usbvision->num_alt=uif->num_altsetting;
1799         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1800         usbvision->alt_max_pkt_size = kmalloc(32*
1801                                               usbvision->num_alt,GFP_KERNEL);
1802         if (usbvision->alt_max_pkt_size == NULL) {
1803                 err("usbvision: out of memory!\n");
1804                 return -ENOMEM;
1805         }
1806
1807         for (i = 0; i < usbvision->num_alt ; i++) {
1808                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1809                                       wMaxPacketSize);
1810                 usbvision->alt_max_pkt_size[i] =
1811                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1812                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1813                        usbvision->alt_max_pkt_size[i]);
1814         }
1815
1816
1817         usbvision->nr = usbvision_nr++;
1818
1819         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1820         if (usbvision->have_tuner) {
1821                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1822         }
1823
1824         usbvision->tuner_addr = ADDR_UNSET;
1825
1826         usbvision->DevModel = model;
1827         usbvision->remove_pending = 0;
1828         usbvision->iface = ifnum;
1829         usbvision->ifaceAlt = 0;
1830         usbvision->video_endp = endpoint->bEndpointAddress;
1831         usbvision->isocPacketSize = 0;
1832         usbvision->usb_bandwidth = 0;
1833         usbvision->user = 0;
1834         usbvision->streaming = Stream_Off;
1835         usbvision_register_video(usbvision);
1836         usbvision_configure_video(usbvision);
1837         up(&usbvision->lock);
1838
1839
1840         usb_set_intfdata (intf, usbvision);
1841         usbvision_create_sysfs(usbvision->vdev);
1842
1843         PDEBUG(DBG_PROBE, "success");
1844         return 0;
1845 }
1846
1847
1848 /*
1849  * usbvision_disconnect()
1850  *
1851  * This procedure stops all driver activity, deallocates interface-private
1852  * structure (pointed by 'ptr') and after that driver should be removable
1853  * with no ill consequences.
1854  *
1855  */
1856 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1857 {
1858         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1859
1860         PDEBUG(DBG_PROBE, "");
1861
1862         if (usbvision == NULL) {
1863                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1864                 return;
1865         }
1866         usb_set_intfdata (intf, NULL);
1867
1868         down(&usbvision->lock);
1869
1870         // At this time we ask to cancel outstanding URBs
1871         usbvision_stop_isoc(usbvision);
1872
1873         if (usbvision->power) {
1874                 usbvision_i2c_unregister(usbvision);
1875                 usbvision_power_off(usbvision);
1876         }
1877         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1878
1879         usb_put_dev(usbvision->dev);
1880         usbvision->dev = NULL;  // USB device is no more
1881
1882         up(&usbvision->lock);
1883
1884         if (usbvision->user) {
1885                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1886                        __FUNCTION__);
1887                 wake_up_interruptible(&usbvision->wait_frame);
1888                 wake_up_interruptible(&usbvision->wait_stream);
1889         } else {
1890                 usbvision_release(usbvision);
1891         }
1892
1893         PDEBUG(DBG_PROBE, "success");
1894
1895 }
1896
1897 static struct usb_driver usbvision_driver = {
1898         .name           = "usbvision",
1899         .id_table       = usbvision_table,
1900         .probe          = usbvision_probe,
1901         .disconnect     = usbvision_disconnect
1902 };
1903
1904 /*
1905  * usbvision_init()
1906  *
1907  * This code is run to initialize the driver.
1908  *
1909  */
1910 static int __init usbvision_init(void)
1911 {
1912         int errCode;
1913
1914         PDEBUG(DBG_PROBE, "");
1915
1916         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1917         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1918         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1919
1920         /* disable planar mode support unless compression enabled */
1921         if (isocMode != ISOC_MODE_COMPRESS ) {
1922                 // FIXME : not the right way to set supported flag
1923                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1924                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1925         }
1926
1927         errCode = usb_register(&usbvision_driver);
1928
1929         if (errCode == 0) {
1930                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1931                 PDEBUG(DBG_PROBE, "success");
1932         }
1933         return errCode;
1934 }
1935
1936 static void __exit usbvision_exit(void)
1937 {
1938  PDEBUG(DBG_PROBE, "");
1939
1940  usb_deregister(&usbvision_driver);
1941  PDEBUG(DBG_PROBE, "success");
1942 }
1943
1944 module_init(usbvision_init);
1945 module_exit(usbvision_exit);
1946
1947 /*
1948  * Overrides for Emacs so that we follow Linus's tabbing style.
1949  * ---------------------------------------------------------------------------
1950  * Local variables:
1951  * c-basic-offset: 8
1952  * End:
1953  */