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/vmalloc.h>
  57 #include <linux/module.h>
  58 #include <linux/init.h>
  59 #include <linux/spinlock.h>
  60 #include <asm/io.h>
  61 #include <linux/videodev2.h>
  62 #include <linux/video_decoder.h>
  63 #include <linux/i2c.h>
  64
  65 #include <media/saa7115.h>
  66 #include <media/v4l2-common.h>
  67 #include <media/v4l2-ioctl.h>
  68 #include <media/tuner.h>
  69
  70 #include <linux/workqueue.h>
  71
  72 #ifdef CONFIG_KMOD
  73 #include <linux/kmod.h>
  74 #endif
  75
  76 #include "usbvision.h"
  77 #include "usbvision-cards.h"
  78
  79 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  80  Dwaine Garden <DwaineGarden@rogers.com>"
  81 #define DRIVER_NAME "usbvision"
  82 #define DRIVER_ALIAS "USBVision"
  83 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  84 #define DRIVER_LICENSE "GPL"
  85 #define USBVISION_DRIVER_VERSION_MAJOR 0
  86 #define USBVISION_DRIVER_VERSION_MINOR 9
  87 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  88 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  89 USBVISION_DRIVER_VERSION_MINOR,\
  90 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  91 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  92  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  93  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  94
  95 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  96
  97
  98 #ifdef USBVISION_DEBUG
  99         #define PDEBUG(level, fmt, args...) { \
 100                 if (video_debug & (level)) \
 101                         info("[%s:%d] " fmt, __func__, __LINE__ , ## args); \
 102         }
 103 #else
 104         #define PDEBUG(level, fmt, args...) do {} while(0)
 105 #endif
 106
 107 #define DBG_IO          1<<1
 108 #define DBG_PROBE       1<<2
 109 #define DBG_MMAP        1<<3
 110
 111 //String operations
 112 #define rmspace(str)    while(*str==' ') str++;
 113 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 114
 115
 116 /* sequential number of usbvision device */
 117 static int usbvision_nr;
 118
 119 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 120         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 121         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 122         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 123         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 124         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 125         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 126         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 127         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 128 };
 129
 130 /* Function prototypes */
 131 static void usbvision_release(struct usb_usbvision *usbvision);
 132
 133 /* Default initialization of device driver parameters */
 134 /* Set the default format for ISOC endpoint */
 135 static int isocMode = ISOC_MODE_COMPRESS;
 136 /* Set the default Debug Mode of the device driver */
 137 static int video_debug;
 138 /* Set the default device to power on at startup */
 139 static int PowerOnAtOpen = 1;
 140 /* Sequential Number of Video Device */
 141 static int video_nr = -1;
 142 /* Sequential Number of Radio Device */
 143 static int radio_nr = -1;
 144 /* Sequential Number of VBI Device */
 145 static int vbi_nr = -1;
 146
 147 /* Grab parameters for the device driver */
 148
 149 /* Showing parameters under SYSFS */
 150 module_param(isocMode, int, 0444);
 151 module_param(video_debug, int, 0444);
 152 module_param(PowerOnAtOpen, int, 0444);
 153 module_param(video_nr, int, 0444);
 154 module_param(radio_nr, int, 0444);
 155 module_param(vbi_nr, int, 0444);
 156
 157 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 158 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 159 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 160 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 161 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 162 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 163
 164
 165 // Misc stuff
 166 MODULE_AUTHOR(DRIVER_AUTHOR);
 167 MODULE_DESCRIPTION(DRIVER_DESC);
 168 MODULE_LICENSE(DRIVER_LICENSE);
 169 MODULE_VERSION(USBVISION_VERSION_STRING);
 170 MODULE_ALIAS(DRIVER_ALIAS);
 171
 172
 173 /*****************************************************************************/
 174 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 175 /* Device information is located at /sys/class/video4linux/video0            */
 176 /* Device parameters information is located at /sys/module/usbvision         */
 177 /* Device USB Information is located at                                      */
 178 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 179 /*****************************************************************************/
 180
 181 #define YES_NO(x) ((x) ? "Yes" : "No")
 182
 183 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 184 {
 185         struct video_device *vdev =
 186                 container_of(cd, struct video_device, dev);
 187         return video_get_drvdata(vdev);
 188 }
 189
 190 static ssize_t show_version(struct device *cd,
 191                             struct device_attribute *attr, char *buf)
 192 {
 193         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 194 }
 195 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 196
 197 static ssize_t show_model(struct device *cd,
 198                           struct device_attribute *attr, char *buf)
 199 {
 200         struct video_device *vdev =
 201                 container_of(cd, struct video_device, 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 DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 207
 208 static ssize_t show_hue(struct device *cd,
 209                         struct device_attribute *attr, char *buf)
 210 {
 211         struct video_device *vdev =
 212                 container_of(cd, struct video_device, 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 DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 222
 223 static ssize_t show_contrast(struct device *cd,
 224                              struct device_attribute *attr, char *buf)
 225 {
 226         struct video_device *vdev =
 227                 container_of(cd, struct video_device, dev);
 228         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 229         struct v4l2_control ctrl;
 230         ctrl.id = V4L2_CID_CONTRAST;
 231         ctrl.value = 0;
 232         if(usbvision->user)
 233                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 234         return sprintf(buf, "%d\n", ctrl.value);
 235 }
 236 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 237
 238 static ssize_t show_brightness(struct device *cd,
 239                                struct device_attribute *attr, char *buf)
 240 {
 241         struct video_device *vdev =
 242                 container_of(cd, struct video_device, dev);
 243         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 244         struct v4l2_control ctrl;
 245         ctrl.id = V4L2_CID_BRIGHTNESS;
 246         ctrl.value = 0;
 247         if(usbvision->user)
 248                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 249         return sprintf(buf, "%d\n", ctrl.value);
 250 }
 251 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 252
 253 static ssize_t show_saturation(struct device *cd,
 254                                struct device_attribute *attr, char *buf)
 255 {
 256         struct video_device *vdev =
 257                 container_of(cd, struct video_device, dev);
 258         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 259         struct v4l2_control ctrl;
 260         ctrl.id = V4L2_CID_SATURATION;
 261         ctrl.value = 0;
 262         if(usbvision->user)
 263                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 264         return sprintf(buf, "%d\n", ctrl.value);
 265 }
 266 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 267
 268 static ssize_t show_streaming(struct device *cd,
 269                               struct device_attribute *attr, char *buf)
 270 {
 271         struct video_device *vdev =
 272                 container_of(cd, struct video_device, dev);
 273         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 274         return sprintf(buf, "%s\n",
 275                        YES_NO(usbvision->streaming==Stream_On?1:0));
 276 }
 277 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 278
 279 static ssize_t show_compression(struct device *cd,
 280                                 struct device_attribute *attr, char *buf)
 281 {
 282         struct video_device *vdev =
 283                 container_of(cd, struct video_device, dev);
 284         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 285         return sprintf(buf, "%s\n",
 286                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 287 }
 288 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 289
 290 static ssize_t show_device_bridge(struct device *cd,
 291                                   struct device_attribute *attr, char *buf)
 292 {
 293         struct video_device *vdev =
 294                 container_of(cd, struct video_device, dev);
 295         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 296         return sprintf(buf, "%d\n", usbvision->bridgeType);
 297 }
 298 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 299
 300 static void usbvision_create_sysfs(struct video_device *vdev)
 301 {
 302         int res;
 303         if (!vdev)
 304                 return;
 305         do {
 306                 res = device_create_file(&vdev->dev, &dev_attr_version);
 307                 if (res<0)
 308                         break;
 309                 res = device_create_file(&vdev->dev, &dev_attr_model);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 313                 if (res<0)
 314                         break;
 315                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 316                 if (res<0)
 317                         break;
 318                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 319                 if (res<0)
 320                         break;
 321                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 322                 if (res<0)
 323                         break;
 324                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 325                 if (res<0)
 326                         break;
 327                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 328                 if (res<0)
 329                         break;
 330                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 331                 if (res>=0)
 332                         return;
 333         } while (0);
 334
 335         err("%s error: %d\n", __func__, res);
 336 }
 337
 338 static void usbvision_remove_sysfs(struct video_device *vdev)
 339 {
 340         if (vdev) {
 341                 device_remove_file(&vdev->dev, &dev_attr_version);
 342                 device_remove_file(&vdev->dev, &dev_attr_model);
 343                 device_remove_file(&vdev->dev, &dev_attr_hue);
 344                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 345                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 346                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 347                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 348                 device_remove_file(&vdev->dev, &dev_attr_compression);
 349                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 350         }
 351 }
 352
 353 /*
 354  * usbvision_open()
 355  *
 356  * This is part of Video 4 Linux API. The driver can be opened by one
 357  * client only (checks internal counter 'usbvision->user'). The procedure
 358  * then allocates buffers needed for video processing.
 359  *
 360  */
 361 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 362 {
 363         struct video_device *dev = video_devdata(file);
 364         struct usb_usbvision *usbvision =
 365                 (struct usb_usbvision *) video_get_drvdata(dev);
 366         int errCode = 0;
 367
 368         PDEBUG(DBG_IO, "open");
 369
 370         usbvision_reset_powerOffTimer(usbvision);
 371
 372         if (usbvision->user)
 373                 errCode = -EBUSY;
 374         else {
 375                 /* Allocate memory for the scratch ring buffer */
 376                 errCode = usbvision_scratch_alloc(usbvision);
 377                 if (isocMode==ISOC_MODE_COMPRESS) {
 378                         /* Allocate intermediate decompression buffers
 379                            only if needed */
 380                         errCode = usbvision_decompress_alloc(usbvision);
 381                 }
 382                 if (errCode) {
 383                         /* Deallocate all buffers if trouble */
 384                         usbvision_scratch_free(usbvision);
 385                         usbvision_decompress_free(usbvision);
 386                 }
 387         }
 388
 389         /* If so far no errors then we shall start the camera */
 390         if (!errCode) {
 391                 mutex_lock(&usbvision->lock);
 392                 if (usbvision->power == 0) {
 393                         usbvision_power_on(usbvision);
 394                         usbvision_i2c_register(usbvision);
 395                 }
 396
 397                 /* Send init sequence only once, it's large! */
 398                 if (!usbvision->initialized) {
 399                         int setup_ok = 0;
 400                         setup_ok = usbvision_setup(usbvision,isocMode);
 401                         if (setup_ok)
 402                                 usbvision->initialized = 1;
 403                         else
 404                                 errCode = -EBUSY;
 405                 }
 406
 407                 if (!errCode) {
 408                         usbvision_begin_streaming(usbvision);
 409                         errCode = usbvision_init_isoc(usbvision);
 410                         /* device must be initialized before isoc transfer */
 411                         usbvision_muxsel(usbvision,0);
 412                         usbvision->user++;
 413                 } else {
 414                         if (PowerOnAtOpen) {
 415                                 usbvision_i2c_unregister(usbvision);
 416                                 usbvision_power_off(usbvision);
 417                                 usbvision->initialized = 0;
 418                         }
 419                 }
 420                 mutex_unlock(&usbvision->lock);
 421         }
 422
 423         /* prepare queues */
 424         usbvision_empty_framequeues(usbvision);
 425
 426         PDEBUG(DBG_IO, "success");
 427         return errCode;
 428 }
 429
 430 /*
 431  * usbvision_v4l2_close()
 432  *
 433  * This is part of Video 4 Linux API. The procedure
 434  * stops streaming and deallocates all buffers that were earlier
 435  * allocated in usbvision_v4l2_open().
 436  *
 437  */
 438 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 439 {
 440         struct video_device *dev = video_devdata(file);
 441         struct usb_usbvision *usbvision =
 442                 (struct usb_usbvision *) video_get_drvdata(dev);
 443
 444         PDEBUG(DBG_IO, "close");
 445         mutex_lock(&usbvision->lock);
 446
 447         usbvision_audio_off(usbvision);
 448         usbvision_restart_isoc(usbvision);
 449         usbvision_stop_isoc(usbvision);
 450
 451         usbvision_decompress_free(usbvision);
 452         usbvision_frames_free(usbvision);
 453         usbvision_empty_framequeues(usbvision);
 454         usbvision_scratch_free(usbvision);
 455
 456         usbvision->user--;
 457
 458         if (PowerOnAtOpen) {
 459                 /* power off in a little while
 460                    to avoid off/on every close/open short sequences */
 461                 usbvision_set_powerOffTimer(usbvision);
 462                 usbvision->initialized = 0;
 463         }
 464
 465         mutex_unlock(&usbvision->lock);
 466
 467         if (usbvision->remove_pending) {
 468                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 469                 usbvision_release(usbvision);
 470         }
 471
 472         PDEBUG(DBG_IO, "success");
 473         return 0;
 474 }
 475
 476
 477 /*
 478  * usbvision_ioctl()
 479  *
 480  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 481  *
 482  */
 483 #ifdef CONFIG_VIDEO_ADV_DEBUG
 484 static int vidioc_g_register (struct file *file, void *priv,
 485                                 struct v4l2_register *reg)
 486 {
 487         struct video_device *dev = video_devdata(file);
 488         struct usb_usbvision *usbvision =
 489                 (struct usb_usbvision *) video_get_drvdata(dev);
 490         int errCode;
 491
 492         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 493                 return -EINVAL;
 494         /* NT100x has a 8-bit register space */
 495         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 496         if (errCode < 0) {
 497                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 498                     __func__, errCode);
 499                 return errCode;
 500         }
 501         reg->val = errCode;
 502         return 0;
 503 }
 504
 505 static int vidioc_s_register (struct file *file, void *priv,
 506                                 struct v4l2_register *reg)
 507 {
 508         struct video_device *dev = video_devdata(file);
 509         struct usb_usbvision *usbvision =
 510                 (struct usb_usbvision *) video_get_drvdata(dev);
 511         int errCode;
 512
 513         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 514                 return -EINVAL;
 515         /* NT100x has a 8-bit register space */
 516         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 517         if (errCode < 0) {
 518                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 519                     __func__, errCode);
 520                 return errCode;
 521         }
 522         return 0;
 523 }
 524 #endif
 525
 526 static int vidioc_querycap (struct file *file, void  *priv,
 527                                         struct v4l2_capability *vc)
 528 {
 529         struct video_device *dev = video_devdata(file);
 530         struct usb_usbvision *usbvision =
 531                 (struct usb_usbvision *) video_get_drvdata(dev);
 532
 533         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 534         strlcpy(vc->card,
 535                 usbvision_device_data[usbvision->DevModel].ModelString,
 536                 sizeof(vc->card));
 537         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 538                 sizeof(vc->bus_info));
 539         vc->version = USBVISION_DRIVER_VERSION;
 540         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 541                 V4L2_CAP_AUDIO |
 542                 V4L2_CAP_READWRITE |
 543                 V4L2_CAP_STREAMING |
 544                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 545         return 0;
 546 }
 547
 548 static int vidioc_enum_input (struct file *file, void *priv,
 549                                 struct v4l2_input *vi)
 550 {
 551         struct video_device *dev = video_devdata(file);
 552         struct usb_usbvision *usbvision =
 553                 (struct usb_usbvision *) video_get_drvdata(dev);
 554         int chan;
 555
 556         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 557                 return -EINVAL;
 558         if (usbvision->have_tuner) {
 559                 chan = vi->index;
 560         } else {
 561                 chan = vi->index + 1; /*skip Television string*/
 562         }
 563         /* Determine the requested input characteristics
 564            specific for each usbvision card model */
 565         switch(chan) {
 566         case 0:
 567                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 568                         strcpy(vi->name, "White Video Input");
 569                 } else {
 570                         strcpy(vi->name, "Television");
 571                         vi->type = V4L2_INPUT_TYPE_TUNER;
 572                         vi->audioset = 1;
 573                         vi->tuner = chan;
 574                         vi->std = USBVISION_NORMS;
 575                 }
 576                 break;
 577         case 1:
 578                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 579                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 580                         strcpy(vi->name, "Green Video Input");
 581                 } else {
 582                         strcpy(vi->name, "Composite Video Input");
 583                 }
 584                 vi->std = V4L2_STD_PAL;
 585                 break;
 586         case 2:
 587                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 588                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 589                         strcpy(vi->name, "Yellow Video Input");
 590                 } else {
 591                         strcpy(vi->name, "S-Video Input");
 592                 }
 593                 vi->std = V4L2_STD_PAL;
 594                 break;
 595         case 3:
 596                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 597                 strcpy(vi->name, "Red Video Input");
 598                 vi->std = V4L2_STD_PAL;
 599                 break;
 600         }
 601         return 0;
 602 }
 603
 604 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 605 {
 606         struct video_device *dev = video_devdata(file);
 607         struct usb_usbvision *usbvision =
 608                 (struct usb_usbvision *) video_get_drvdata(dev);
 609
 610         *input = usbvision->ctl_input;
 611         return 0;
 612 }
 613
 614 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 615 {
 616         struct video_device *dev = video_devdata(file);
 617         struct usb_usbvision *usbvision =
 618                 (struct usb_usbvision *) video_get_drvdata(dev);
 619
 620         if ((input >= usbvision->video_inputs) || (input < 0) )
 621                 return -EINVAL;
 622
 623         mutex_lock(&usbvision->lock);
 624         usbvision_muxsel(usbvision, input);
 625         usbvision_set_input(usbvision);
 626         usbvision_set_output(usbvision,
 627                              usbvision->curwidth,
 628                              usbvision->curheight);
 629         mutex_unlock(&usbvision->lock);
 630         return 0;
 631 }
 632
 633 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 634 {
 635         struct video_device *dev = video_devdata(file);
 636         struct usb_usbvision *usbvision =
 637                 (struct usb_usbvision *) video_get_drvdata(dev);
 638         usbvision->tvnormId=*id;
 639
 640         mutex_lock(&usbvision->lock);
 641         call_i2c_clients(usbvision, VIDIOC_S_STD,
 642                          &usbvision->tvnormId);
 643         mutex_unlock(&usbvision->lock);
 644         /* propagate the change to the decoder */
 645         usbvision_muxsel(usbvision, usbvision->ctl_input);
 646
 647         return 0;
 648 }
 649
 650 static int vidioc_g_tuner (struct file *file, void *priv,
 651                                 struct v4l2_tuner *vt)
 652 {
 653         struct video_device *dev = video_devdata(file);
 654         struct usb_usbvision *usbvision =
 655                 (struct usb_usbvision *) video_get_drvdata(dev);
 656
 657         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 658                 return -EINVAL;
 659         if(usbvision->radio) {
 660                 strcpy(vt->name, "Radio");
 661                 vt->type = V4L2_TUNER_RADIO;
 662         } else {
 663                 strcpy(vt->name, "Television");
 664         }
 665         /* Let clients fill in the remainder of this struct */
 666         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 667
 668         return 0;
 669 }
 670
 671 static int vidioc_s_tuner (struct file *file, void *priv,
 672                                 struct v4l2_tuner *vt)
 673 {
 674         struct video_device *dev = video_devdata(file);
 675         struct usb_usbvision *usbvision =
 676                 (struct usb_usbvision *) video_get_drvdata(dev);
 677
 678         // Only no or one tuner for now
 679         if (!usbvision->have_tuner || vt->index)
 680                 return -EINVAL;
 681         /* let clients handle this */
 682         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 683
 684         return 0;
 685 }
 686
 687 static int vidioc_g_frequency (struct file *file, void *priv,
 688                                 struct v4l2_frequency *freq)
 689 {
 690         struct video_device *dev = video_devdata(file);
 691         struct usb_usbvision *usbvision =
 692                 (struct usb_usbvision *) video_get_drvdata(dev);
 693
 694         freq->tuner = 0; // Only one tuner
 695         if(usbvision->radio) {
 696                 freq->type = V4L2_TUNER_RADIO;
 697         } else {
 698                 freq->type = V4L2_TUNER_ANALOG_TV;
 699         }
 700         freq->frequency = usbvision->freq;
 701
 702         return 0;
 703 }
 704
 705 static int vidioc_s_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         // Only no or one tuner for now
 713         if (!usbvision->have_tuner || freq->tuner)
 714                 return -EINVAL;
 715
 716         usbvision->freq = freq->frequency;
 717         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 718
 719         return 0;
 720 }
 721
 722 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 723 {
 724         struct video_device *dev = video_devdata(file);
 725         struct usb_usbvision *usbvision =
 726                 (struct usb_usbvision *) video_get_drvdata(dev);
 727
 728         memset(a,0,sizeof(*a));
 729         if(usbvision->radio) {
 730                 strcpy(a->name,"Radio");
 731         } else {
 732                 strcpy(a->name, "TV");
 733         }
 734
 735         return 0;
 736 }
 737
 738 static int vidioc_s_audio (struct file *file, void *fh,
 739                           struct v4l2_audio *a)
 740 {
 741         if(a->index) {
 742                 return -EINVAL;
 743         }
 744
 745         return 0;
 746 }
 747
 748 static int vidioc_queryctrl (struct file *file, void *priv,
 749                             struct v4l2_queryctrl *ctrl)
 750 {
 751         struct video_device *dev = video_devdata(file);
 752         struct usb_usbvision *usbvision =
 753                 (struct usb_usbvision *) video_get_drvdata(dev);
 754         int id=ctrl->id;
 755
 756         memset(ctrl,0,sizeof(*ctrl));
 757         ctrl->id=id;
 758
 759         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 760
 761         if (!ctrl->type)
 762                 return -EINVAL;
 763
 764         return 0;
 765 }
 766
 767 static int vidioc_g_ctrl (struct file *file, void *priv,
 768                                 struct v4l2_control *ctrl)
 769 {
 770         struct video_device *dev = video_devdata(file);
 771         struct usb_usbvision *usbvision =
 772                 (struct usb_usbvision *) video_get_drvdata(dev);
 773         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 774
 775         return 0;
 776 }
 777
 778 static int vidioc_s_ctrl (struct file *file, void *priv,
 779                                 struct v4l2_control *ctrl)
 780 {
 781         struct video_device *dev = video_devdata(file);
 782         struct usb_usbvision *usbvision =
 783                 (struct usb_usbvision *) video_get_drvdata(dev);
 784         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 785
 786         return 0;
 787 }
 788
 789 static int vidioc_reqbufs (struct file *file,
 790                            void *priv, struct v4l2_requestbuffers *vr)
 791 {
 792         struct video_device *dev = video_devdata(file);
 793         struct usb_usbvision *usbvision =
 794                 (struct usb_usbvision *) video_get_drvdata(dev);
 795         int ret;
 796
 797         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 798
 799         /* Check input validity:
 800            the user must do a VIDEO CAPTURE and MMAP method. */
 801         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 802            (vr->memory != V4L2_MEMORY_MMAP))
 803                 return -EINVAL;
 804
 805         if(usbvision->streaming == Stream_On) {
 806                 if ((ret = usbvision_stream_interrupt(usbvision)))
 807                         return ret;
 808         }
 809
 810         usbvision_frames_free(usbvision);
 811         usbvision_empty_framequeues(usbvision);
 812         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 813
 814         usbvision->curFrame = NULL;
 815
 816         return 0;
 817 }
 818
 819 static int vidioc_querybuf (struct file *file,
 820                             void *priv, struct v4l2_buffer *vb)
 821 {
 822         struct video_device *dev = video_devdata(file);
 823         struct usb_usbvision *usbvision =
 824                 (struct usb_usbvision *) video_get_drvdata(dev);
 825         struct usbvision_frame *frame;
 826
 827         /* FIXME : must control
 828            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 829         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 830                 return -EINVAL;
 831         }
 832         if(vb->index>=usbvision->num_frames)  {
 833                 return -EINVAL;
 834         }
 835         /* Updating the corresponding frame state */
 836         vb->flags = 0;
 837         frame = &usbvision->frame[vb->index];
 838         if(frame->grabstate >= FrameState_Ready)
 839                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 840         if(frame->grabstate >= FrameState_Done)
 841                 vb->flags |= V4L2_BUF_FLAG_DONE;
 842         if(frame->grabstate == FrameState_Unused)
 843                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 844         vb->memory = V4L2_MEMORY_MMAP;
 845
 846         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 847
 848         vb->memory = V4L2_MEMORY_MMAP;
 849         vb->field = V4L2_FIELD_NONE;
 850         vb->length = usbvision->curwidth*
 851                 usbvision->curheight*
 852                 usbvision->palette.bytes_per_pixel;
 853         vb->timestamp = usbvision->frame[vb->index].timestamp;
 854         vb->sequence = usbvision->frame[vb->index].sequence;
 855         return 0;
 856 }
 857
 858 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 859 {
 860         struct video_device *dev = video_devdata(file);
 861         struct usb_usbvision *usbvision =
 862                 (struct usb_usbvision *) video_get_drvdata(dev);
 863         struct usbvision_frame *frame;
 864         unsigned long lock_flags;
 865
 866         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 867         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 868                 return -EINVAL;
 869         }
 870         if(vb->index>=usbvision->num_frames)  {
 871                 return -EINVAL;
 872         }
 873
 874         frame = &usbvision->frame[vb->index];
 875
 876         if (frame->grabstate != FrameState_Unused) {
 877                 return -EAGAIN;
 878         }
 879
 880         /* Mark it as ready and enqueue frame */
 881         frame->grabstate = FrameState_Ready;
 882         frame->scanstate = ScanState_Scanning;
 883         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 884
 885         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 886
 887         /* set v4l2_format index */
 888         frame->v4l2_format = usbvision->palette;
 889
 890         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 891         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 892         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 893
 894         return 0;
 895 }
 896
 897 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 898 {
 899         struct video_device *dev = video_devdata(file);
 900         struct usb_usbvision *usbvision =
 901                 (struct usb_usbvision *) video_get_drvdata(dev);
 902         int ret;
 903         struct usbvision_frame *f;
 904         unsigned long lock_flags;
 905
 906         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 907                 return -EINVAL;
 908
 909         if (list_empty(&(usbvision->outqueue))) {
 910                 if (usbvision->streaming == Stream_Idle)
 911                         return -EINVAL;
 912                 ret = wait_event_interruptible
 913                         (usbvision->wait_frame,
 914                          !list_empty(&(usbvision->outqueue)));
 915                 if (ret)
 916                         return ret;
 917         }
 918
 919         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 920         f = list_entry(usbvision->outqueue.next,
 921                        struct usbvision_frame, frame);
 922         list_del(usbvision->outqueue.next);
 923         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 924
 925         f->grabstate = FrameState_Unused;
 926
 927         vb->memory = V4L2_MEMORY_MMAP;
 928         vb->flags = V4L2_BUF_FLAG_MAPPED |
 929                 V4L2_BUF_FLAG_QUEUED |
 930                 V4L2_BUF_FLAG_DONE;
 931         vb->index = f->index;
 932         vb->sequence = f->sequence;
 933         vb->timestamp = f->timestamp;
 934         vb->field = V4L2_FIELD_NONE;
 935         vb->bytesused = f->scanlength;
 936
 937         return 0;
 938 }
 939
 940 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 941 {
 942         struct video_device *dev = video_devdata(file);
 943         struct usb_usbvision *usbvision =
 944                 (struct usb_usbvision *) video_get_drvdata(dev);
 945         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 946
 947         usbvision->streaming = Stream_On;
 948         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 949
 950         return 0;
 951 }
 952
 953 static int vidioc_streamoff(struct file *file,
 954                             void *priv, enum v4l2_buf_type type)
 955 {
 956         struct video_device *dev = video_devdata(file);
 957         struct usb_usbvision *usbvision =
 958                 (struct usb_usbvision *) video_get_drvdata(dev);
 959         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 960
 961         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 962                 return -EINVAL;
 963
 964         if(usbvision->streaming == Stream_On) {
 965                 usbvision_stream_interrupt(usbvision);
 966                 /* Stop all video streamings */
 967                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 968         }
 969         usbvision_empty_framequeues(usbvision);
 970
 971         return 0;
 972 }
 973
 974 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 975                                         struct v4l2_fmtdesc *vfd)
 976 {
 977         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 978                 return -EINVAL;
 979         }
 980         vfd->flags = 0;
 981         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 982         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 983         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 984         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 985         return 0;
 986 }
 987
 988 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 989                                         struct v4l2_format *vf)
 990 {
 991         struct video_device *dev = video_devdata(file);
 992         struct usb_usbvision *usbvision =
 993                 (struct usb_usbvision *) video_get_drvdata(dev);
 994         vf->fmt.pix.width = usbvision->curwidth;
 995         vf->fmt.pix.height = usbvision->curheight;
 996         vf->fmt.pix.pixelformat = usbvision->palette.format;
 997         vf->fmt.pix.bytesperline =
 998                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 999         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1000         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1001         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1002
1003         return 0;
1004 }
1005
1006 static int vidioc_try_fmt_vid_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         int formatIdx;
1013
1014         /* Find requested format in available ones */
1015         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1016                 if(vf->fmt.pix.pixelformat ==
1017                    usbvision_v4l2_format[formatIdx].format) {
1018                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1019                         break;
1020                 }
1021         }
1022         /* robustness */
1023         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1024                 return -EINVAL;
1025         }
1026         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1027         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1028
1029         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1030                 usbvision->palette.bytes_per_pixel;
1031         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1032
1033         return 0;
1034 }
1035
1036 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1037                                struct v4l2_format *vf)
1038 {
1039         struct video_device *dev = video_devdata(file);
1040         struct usb_usbvision *usbvision =
1041                 (struct usb_usbvision *) video_get_drvdata(dev);
1042         int ret;
1043
1044         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
1045                 return ret;
1046         }
1047
1048         /* stop io in case it is already in progress */
1049         if(usbvision->streaming == Stream_On) {
1050                 if ((ret = usbvision_stream_interrupt(usbvision)))
1051                         return ret;
1052         }
1053         usbvision_frames_free(usbvision);
1054         usbvision_empty_framequeues(usbvision);
1055
1056         usbvision->curFrame = NULL;
1057
1058         /* by now we are committed to the new data... */
1059         mutex_lock(&usbvision->lock);
1060         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1061         mutex_unlock(&usbvision->lock);
1062
1063         return 0;
1064 }
1065
1066 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1067                       size_t count, loff_t *ppos)
1068 {
1069         struct video_device *dev = video_devdata(file);
1070         struct usb_usbvision *usbvision =
1071                 (struct usb_usbvision *) video_get_drvdata(dev);
1072         int noblock = file->f_flags & O_NONBLOCK;
1073         unsigned long lock_flags;
1074
1075         int ret,i;
1076         struct usbvision_frame *frame;
1077
1078         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1079                (unsigned long)count, noblock);
1080
1081         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1082                 return -EFAULT;
1083
1084         /* This entry point is compatible with the mmap routines
1085            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1086            to get frames or call read on the device. */
1087         if(!usbvision->num_frames) {
1088                 /* First, allocate some frames to work with
1089                    if this has not been done with VIDIOC_REQBUF */
1090                 usbvision_frames_free(usbvision);
1091                 usbvision_empty_framequeues(usbvision);
1092                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1093         }
1094
1095         if(usbvision->streaming != Stream_On) {
1096                 /* no stream is running, make it running ! */
1097                 usbvision->streaming = Stream_On;
1098                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1099         }
1100
1101         /* Then, enqueue as many frames as possible
1102            (like a user of VIDIOC_QBUF would do) */
1103         for(i=0;i<usbvision->num_frames;i++) {
1104                 frame = &usbvision->frame[i];
1105                 if(frame->grabstate == FrameState_Unused) {
1106                         /* Mark it as ready and enqueue frame */
1107                         frame->grabstate = FrameState_Ready;
1108                         frame->scanstate = ScanState_Scanning;
1109                         /* Accumulated in usbvision_parse_data() */
1110                         frame->scanlength = 0;
1111
1112                         /* set v4l2_format index */
1113                         frame->v4l2_format = usbvision->palette;
1114
1115                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1116                         list_add_tail(&frame->frame, &usbvision->inqueue);
1117                         spin_unlock_irqrestore(&usbvision->queue_lock,
1118                                                lock_flags);
1119                 }
1120         }
1121
1122         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1123         if (list_empty(&(usbvision->outqueue))) {
1124                 if(noblock)
1125                         return -EAGAIN;
1126
1127                 ret = wait_event_interruptible
1128                         (usbvision->wait_frame,
1129                          !list_empty(&(usbvision->outqueue)));
1130                 if (ret)
1131                         return ret;
1132         }
1133
1134         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1135         frame = list_entry(usbvision->outqueue.next,
1136                            struct usbvision_frame, frame);
1137         list_del(usbvision->outqueue.next);
1138         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1139
1140         /* An error returns an empty frame */
1141         if (frame->grabstate == FrameState_Error) {
1142                 frame->bytes_read = 0;
1143                 return 0;
1144         }
1145
1146         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1147                __func__,
1148                frame->index, frame->bytes_read, frame->scanlength);
1149
1150         /* copy bytes to user space; we allow for partials reads */
1151         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1152                 count = frame->scanlength - frame->bytes_read;
1153
1154         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1155                 return -EFAULT;
1156         }
1157
1158         frame->bytes_read += count;
1159         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1160                __func__,
1161                (unsigned long)count, frame->bytes_read);
1162
1163         /* For now, forget the frame if it has not been read in one shot. */
1164 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1165                 frame->bytes_read = 0;
1166
1167                 /* Mark it as available to be used again. */
1168                 frame->grabstate = FrameState_Unused;
1169 /*      } */
1170
1171         return count;
1172 }
1173
1174 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1175 {
1176         unsigned long size = vma->vm_end - vma->vm_start,
1177                 start = vma->vm_start;
1178         void *pos;
1179         u32 i;
1180
1181         struct video_device *dev = video_devdata(file);
1182         struct usb_usbvision *usbvision =
1183                 (struct usb_usbvision *) video_get_drvdata(dev);
1184
1185         PDEBUG(DBG_MMAP, "mmap");
1186
1187         mutex_lock(&usbvision->lock);
1188
1189         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1190                 mutex_unlock(&usbvision->lock);
1191                 return -EFAULT;
1192         }
1193
1194         if (!(vma->vm_flags & VM_WRITE) ||
1195             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1196                 mutex_unlock(&usbvision->lock);
1197                 return -EINVAL;
1198         }
1199
1200         for (i = 0; i < usbvision->num_frames; i++) {
1201                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1202                     vma->vm_pgoff)
1203                         break;
1204         }
1205         if (i == usbvision->num_frames) {
1206                 PDEBUG(DBG_MMAP,
1207                        "mmap: user supplied mapping address is out of range");
1208                 mutex_unlock(&usbvision->lock);
1209                 return -EINVAL;
1210         }
1211
1212         /* VM_IO is eventually going to replace PageReserved altogether */
1213         vma->vm_flags |= VM_IO;
1214         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1215
1216         pos = usbvision->frame[i].data;
1217         while (size > 0) {
1218
1219                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1220                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1221                         mutex_unlock(&usbvision->lock);
1222                         return -EAGAIN;
1223                 }
1224                 start += PAGE_SIZE;
1225                 pos += PAGE_SIZE;
1226                 size -= PAGE_SIZE;
1227         }
1228
1229         mutex_unlock(&usbvision->lock);
1230         return 0;
1231 }
1232
1233
1234 /*
1235  * Here comes the stuff for radio on usbvision based devices
1236  *
1237  */
1238 static int usbvision_radio_open(struct inode *inode, struct file *file)
1239 {
1240         struct video_device *dev = video_devdata(file);
1241         struct usb_usbvision *usbvision =
1242                 (struct usb_usbvision *) video_get_drvdata(dev);
1243         int errCode = 0;
1244
1245         PDEBUG(DBG_IO, "%s:", __func__);
1246
1247         mutex_lock(&usbvision->lock);
1248
1249         if (usbvision->user) {
1250                 err("%s: Someone tried to open an already opened USBVision Radio!", __func__);
1251                 errCode = -EBUSY;
1252         }
1253         else {
1254                 if(PowerOnAtOpen) {
1255                         usbvision_reset_powerOffTimer(usbvision);
1256                         if (usbvision->power == 0) {
1257                                 usbvision_power_on(usbvision);
1258                                 usbvision_i2c_register(usbvision);
1259                         }
1260                 }
1261
1262                 /* Alternate interface 1 is is the biggest frame size */
1263                 errCode = usbvision_set_alternate(usbvision);
1264                 if (errCode < 0) {
1265                         usbvision->last_error = errCode;
1266                         errCode = -EBUSY;
1267                         goto out;
1268                 }
1269
1270                 // If so far no errors then we shall start the radio
1271                 usbvision->radio = 1;
1272                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1273                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1274                 usbvision->user++;
1275         }
1276
1277         if (errCode) {
1278                 if (PowerOnAtOpen) {
1279                         usbvision_i2c_unregister(usbvision);
1280                         usbvision_power_off(usbvision);
1281                         usbvision->initialized = 0;
1282                 }
1283         }
1284 out:
1285         mutex_unlock(&usbvision->lock);
1286         return errCode;
1287 }
1288
1289
1290 static int usbvision_radio_close(struct inode *inode, struct file *file)
1291 {
1292         struct video_device *dev = video_devdata(file);
1293         struct usb_usbvision *usbvision =
1294                 (struct usb_usbvision *) video_get_drvdata(dev);
1295         int errCode = 0;
1296
1297         PDEBUG(DBG_IO, "");
1298
1299         mutex_lock(&usbvision->lock);
1300
1301         /* Set packet size to 0 */
1302         usbvision->ifaceAlt=0;
1303         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1304                                     usbvision->ifaceAlt);
1305
1306         usbvision_audio_off(usbvision);
1307         usbvision->radio=0;
1308         usbvision->user--;
1309
1310         if (PowerOnAtOpen) {
1311                 usbvision_set_powerOffTimer(usbvision);
1312                 usbvision->initialized = 0;
1313         }
1314
1315         mutex_unlock(&usbvision->lock);
1316
1317         if (usbvision->remove_pending) {
1318                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1319                 usbvision_release(usbvision);
1320         }
1321
1322         PDEBUG(DBG_IO, "success");
1323         return errCode;
1324 }
1325
1326 /*
1327  * Here comes the stuff for vbi on usbvision based devices
1328  *
1329  */
1330 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1331 {
1332         /* TODO */
1333         return -ENODEV;
1334 }
1335
1336 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1337 {
1338         /* TODO */
1339         return -ENODEV;
1340 }
1341
1342 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1343                                  unsigned int cmd, void *arg)
1344 {
1345         /* TODO */
1346         return -ENOIOCTLCMD;
1347 }
1348
1349 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1350                        unsigned int cmd, unsigned long arg)
1351 {
1352         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1353 }
1354
1355
1356 //
1357 // Video registration stuff
1358 //
1359
1360 // Video template
1361 static const struct file_operations usbvision_fops = {
1362         .owner             = THIS_MODULE,
1363         .open           = usbvision_v4l2_open,
1364         .release        = usbvision_v4l2_close,
1365         .read           = usbvision_v4l2_read,
1366         .mmap           = usbvision_v4l2_mmap,
1367         .ioctl          = video_ioctl2,
1368         .llseek         = no_llseek,
1369 /*      .poll          = video_poll, */
1370         .compat_ioctl  = v4l_compat_ioctl32,
1371 };
1372
1373 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1374         .vidioc_querycap      = vidioc_querycap,
1375         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1376         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1377         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1378         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1379         .vidioc_reqbufs       = vidioc_reqbufs,
1380         .vidioc_querybuf      = vidioc_querybuf,
1381         .vidioc_qbuf          = vidioc_qbuf,
1382         .vidioc_dqbuf         = vidioc_dqbuf,
1383         .vidioc_s_std         = vidioc_s_std,
1384         .vidioc_enum_input    = vidioc_enum_input,
1385         .vidioc_g_input       = vidioc_g_input,
1386         .vidioc_s_input       = vidioc_s_input,
1387         .vidioc_queryctrl     = vidioc_queryctrl,
1388         .vidioc_g_audio       = vidioc_g_audio,
1389         .vidioc_s_audio       = vidioc_s_audio,
1390         .vidioc_g_ctrl        = vidioc_g_ctrl,
1391         .vidioc_s_ctrl        = vidioc_s_ctrl,
1392         .vidioc_streamon      = vidioc_streamon,
1393         .vidioc_streamoff     = vidioc_streamoff,
1394 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1395 /*      .vidiocgmbuf          = vidiocgmbuf, */
1396 #endif
1397         .vidioc_g_tuner       = vidioc_g_tuner,
1398         .vidioc_s_tuner       = vidioc_s_tuner,
1399         .vidioc_g_frequency   = vidioc_g_frequency,
1400         .vidioc_s_frequency   = vidioc_s_frequency,
1401 #ifdef CONFIG_VIDEO_ADV_DEBUG
1402         .vidioc_g_register    = vidioc_g_register,
1403         .vidioc_s_register    = vidioc_s_register,
1404 #endif
1405 };
1406
1407 static struct video_device usbvision_video_template = {
1408         .fops           = &usbvision_fops,
1409         .ioctl_ops      = &usbvision_ioctl_ops,
1410         .name           = "usbvision-video",
1411         .release        = video_device_release,
1412         .minor          = -1,
1413         .tvnorms              = USBVISION_NORMS,
1414         .current_norm         = V4L2_STD_PAL
1415 };
1416
1417
1418 // Radio template
1419 static const struct file_operations usbvision_radio_fops = {
1420         .owner             = THIS_MODULE,
1421         .open           = usbvision_radio_open,
1422         .release        = usbvision_radio_close,
1423         .ioctl          = video_ioctl2,
1424         .llseek         = no_llseek,
1425         .compat_ioctl  = v4l_compat_ioctl32,
1426 };
1427
1428 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1429         .vidioc_querycap      = vidioc_querycap,
1430         .vidioc_enum_input    = vidioc_enum_input,
1431         .vidioc_g_input       = vidioc_g_input,
1432         .vidioc_s_input       = vidioc_s_input,
1433         .vidioc_queryctrl     = vidioc_queryctrl,
1434         .vidioc_g_audio       = vidioc_g_audio,
1435         .vidioc_s_audio       = vidioc_s_audio,
1436         .vidioc_g_ctrl        = vidioc_g_ctrl,
1437         .vidioc_s_ctrl        = vidioc_s_ctrl,
1438         .vidioc_g_tuner       = vidioc_g_tuner,
1439         .vidioc_s_tuner       = vidioc_s_tuner,
1440         .vidioc_g_frequency   = vidioc_g_frequency,
1441         .vidioc_s_frequency   = vidioc_s_frequency,
1442 };
1443
1444 static struct video_device usbvision_radio_template = {
1445         .fops           = &usbvision_radio_fops,
1446         .name           = "usbvision-radio",
1447         .release        = video_device_release,
1448         .minor          = -1,
1449         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1450
1451         .tvnorms              = USBVISION_NORMS,
1452         .current_norm         = V4L2_STD_PAL
1453 };
1454
1455 // vbi template
1456 static const struct file_operations usbvision_vbi_fops = {
1457         .owner             = THIS_MODULE,
1458         .open           = usbvision_vbi_open,
1459         .release        = usbvision_vbi_close,
1460         .ioctl          = usbvision_vbi_ioctl,
1461         .llseek         = no_llseek,
1462         .compat_ioctl  = v4l_compat_ioctl32,
1463 };
1464
1465 static struct video_device usbvision_vbi_template=
1466 {
1467         .fops           = &usbvision_vbi_fops,
1468         .release        = video_device_release,
1469         .name           = "usbvision-vbi",
1470         .minor          = -1,
1471 };
1472
1473
1474 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1475                                         struct video_device *vdev_template,
1476                                         char *name)
1477 {
1478         struct usb_device *usb_dev = usbvision->dev;
1479         struct video_device *vdev;
1480
1481         if (usb_dev == NULL) {
1482                 err("%s: usbvision->dev is not set", __func__);
1483                 return NULL;
1484         }
1485
1486         vdev = video_device_alloc();
1487         if (NULL == vdev) {
1488                 return NULL;
1489         }
1490         *vdev = *vdev_template;
1491 //      vdev->minor   = -1;
1492         vdev->parent  = &usb_dev->dev;
1493         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1494         video_set_drvdata(vdev, usbvision);
1495         return vdev;
1496 }
1497
1498 // unregister video4linux devices
1499 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1500 {
1501         // vbi Device:
1502         if (usbvision->vbi) {
1503                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1504                        usbvision->vbi->minor & 0x1f);
1505                 if (usbvision->vbi->minor != -1) {
1506                         video_unregister_device(usbvision->vbi);
1507                 } else {
1508                         video_device_release(usbvision->vbi);
1509                 }
1510                 usbvision->vbi = NULL;
1511         }
1512
1513         // Radio Device:
1514         if (usbvision->rdev) {
1515                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1516                        usbvision->rdev->minor & 0x1f);
1517                 if (usbvision->rdev->minor != -1) {
1518                         video_unregister_device(usbvision->rdev);
1519                 } else {
1520                         video_device_release(usbvision->rdev);
1521                 }
1522                 usbvision->rdev = NULL;
1523         }
1524
1525         // Video Device:
1526         if (usbvision->vdev) {
1527                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1528                        usbvision->vdev->minor & 0x1f);
1529                 if (usbvision->vdev->minor != -1) {
1530                         video_unregister_device(usbvision->vdev);
1531                 } else {
1532                         video_device_release(usbvision->vdev);
1533                 }
1534                 usbvision->vdev = NULL;
1535         }
1536 }
1537
1538 // register video4linux devices
1539 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1540 {
1541         // Video Device:
1542         usbvision->vdev = usbvision_vdev_init(usbvision,
1543                                               &usbvision_video_template,
1544                                               "USBVision Video");
1545         if (usbvision->vdev == NULL) {
1546                 goto err_exit;
1547         }
1548         if (video_register_device(usbvision->vdev,
1549                                   VFL_TYPE_GRABBER,
1550                                   video_nr)<0) {
1551                 goto err_exit;
1552         }
1553         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1554                usbvision->nr,usbvision->vdev->minor & 0x1f);
1555
1556         // Radio Device:
1557         if (usbvision_device_data[usbvision->DevModel].Radio) {
1558                 // usbvision has radio
1559                 usbvision->rdev = usbvision_vdev_init(usbvision,
1560                                                       &usbvision_radio_template,
1561                                                       "USBVision Radio");
1562                 if (usbvision->rdev == NULL) {
1563                         goto err_exit;
1564                 }
1565                 if (video_register_device(usbvision->rdev,
1566                                           VFL_TYPE_RADIO,
1567                                           radio_nr)<0) {
1568                         goto err_exit;
1569                 }
1570                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1571                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1572         }
1573         // vbi Device:
1574         if (usbvision_device_data[usbvision->DevModel].vbi) {
1575                 usbvision->vbi = usbvision_vdev_init(usbvision,
1576                                                      &usbvision_vbi_template,
1577                                                      "USBVision VBI");
1578                 if (usbvision->vdev == NULL) {
1579                         goto err_exit;
1580                 }
1581                 if (video_register_device(usbvision->vbi,
1582                                           VFL_TYPE_VBI,
1583                                           vbi_nr)<0) {
1584                         goto err_exit;
1585                 }
1586                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1587                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1588         }
1589         // all done
1590         return 0;
1591
1592  err_exit:
1593         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1594         usbvision_unregister_video(usbvision);
1595         return -1;
1596 }
1597
1598 /*
1599  * usbvision_alloc()
1600  *
1601  * This code allocates the struct usb_usbvision.
1602  * It is filled with default values.
1603  *
1604  * Returns NULL on error, a pointer to usb_usbvision else.
1605  *
1606  */
1607 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1608 {
1609         struct usb_usbvision *usbvision;
1610
1611         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1612             NULL) {
1613                 goto err_exit;
1614         }
1615
1616         usbvision->dev = dev;
1617
1618         mutex_init(&usbvision->lock);   /* available */
1619
1620         // prepare control urb for control messages during interrupts
1621         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1622         if (usbvision->ctrlUrb == NULL) {
1623                 goto err_exit;
1624         }
1625         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1626
1627         usbvision_init_powerOffTimer(usbvision);
1628
1629         return usbvision;
1630
1631 err_exit:
1632         if (usbvision && usbvision->ctrlUrb) {
1633                 usb_free_urb(usbvision->ctrlUrb);
1634         }
1635         if (usbvision) {
1636                 kfree(usbvision);
1637         }
1638         return NULL;
1639 }
1640
1641 /*
1642  * usbvision_release()
1643  *
1644  * This code does final release of struct usb_usbvision. This happens
1645  * after the device is disconnected -and- all clients closed their files.
1646  *
1647  */
1648 static void usbvision_release(struct usb_usbvision *usbvision)
1649 {
1650         PDEBUG(DBG_PROBE, "");
1651
1652         mutex_lock(&usbvision->lock);
1653
1654         usbvision_reset_powerOffTimer(usbvision);
1655
1656         usbvision->initialized = 0;
1657
1658         mutex_unlock(&usbvision->lock);
1659
1660         usbvision_remove_sysfs(usbvision->vdev);
1661         usbvision_unregister_video(usbvision);
1662
1663         if (usbvision->ctrlUrb) {
1664                 usb_free_urb(usbvision->ctrlUrb);
1665         }
1666
1667         kfree(usbvision);
1668
1669         PDEBUG(DBG_PROBE, "success");
1670 }
1671
1672
1673 /*********************** usb interface **********************************/
1674
1675 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1676 {
1677         int model;
1678
1679         if (usbvision == NULL)
1680                 return;
1681
1682         model = usbvision->DevModel;
1683         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1684
1685         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1686                 usbvision->Vin_Reg2_Preset =
1687                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1688         } else {
1689                 usbvision->Vin_Reg2_Preset = 0;
1690         }
1691
1692         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1693
1694         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1695         usbvision->ctl_input = 0;
1696
1697         /* This should be here to make i2c clients to be able to register */
1698         /* first switch off audio */
1699         usbvision_audio_off(usbvision);
1700         if (!PowerOnAtOpen) {
1701                 /* and then power up the noisy tuner */
1702                 usbvision_power_on(usbvision);
1703                 usbvision_i2c_register(usbvision);
1704         }
1705 }
1706
1707 /*
1708  * usbvision_probe()
1709  *
1710  * This procedure queries device descriptor and accepts the interface
1711  * if it looks like USBVISION video device
1712  *
1713  */
1714 static int __devinit usbvision_probe(struct usb_interface *intf,
1715                                      const struct usb_device_id *devid)
1716 {
1717         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1718         struct usb_interface *uif;
1719         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1720         const struct usb_host_interface *interface;
1721         struct usb_usbvision *usbvision = NULL;
1722         const struct usb_endpoint_descriptor *endpoint;
1723         int model,i;
1724
1725         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1726                                 dev->descriptor.idVendor,
1727                                 dev->descriptor.idProduct, ifnum);
1728
1729         model = devid->driver_info;
1730         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1731                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1732                 return -ENODEV;
1733         }
1734         printk(KERN_INFO "%s: %s found\n", __func__,
1735                                 usbvision_device_data[model].ModelString);
1736
1737         if (usbvision_device_data[model].Interface >= 0) {
1738                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1739         } else {
1740                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1741         }
1742         endpoint = &interface->endpoint[1].desc;
1743         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1744             USB_ENDPOINT_XFER_ISOC) {
1745                 err("%s: interface %d. has non-ISO endpoint!",
1746                     __func__, ifnum);
1747                 err("%s: Endpoint attributes %d",
1748                     __func__, endpoint->bmAttributes);
1749                 return -ENODEV;
1750         }
1751         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1752             USB_DIR_OUT) {
1753                 err("%s: interface %d. has ISO OUT endpoint!",
1754                     __func__, ifnum);
1755                 return -ENODEV;
1756         }
1757
1758         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1759                 err("%s: couldn't allocate USBVision struct", __func__);
1760                 return -ENOMEM;
1761         }
1762
1763         if (dev->descriptor.bNumConfigurations > 1) {
1764                 usbvision->bridgeType = BRIDGE_NT1004;
1765         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1766                 usbvision->bridgeType = BRIDGE_NT1005;
1767         } else {
1768                 usbvision->bridgeType = BRIDGE_NT1003;
1769         }
1770         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1771
1772         mutex_lock(&usbvision->lock);
1773
1774         /* compute alternate max packet sizes */
1775         uif = dev->actconfig->interface[0];
1776
1777         usbvision->num_alt=uif->num_altsetting;
1778         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1779         usbvision->alt_max_pkt_size = kmalloc(32*
1780                                               usbvision->num_alt,GFP_KERNEL);
1781         if (usbvision->alt_max_pkt_size == NULL) {
1782                 err("usbvision: out of memory!\n");
1783                 mutex_unlock(&usbvision->lock);
1784                 return -ENOMEM;
1785         }
1786
1787         for (i = 0; i < usbvision->num_alt ; i++) {
1788                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1789                                       wMaxPacketSize);
1790                 usbvision->alt_max_pkt_size[i] =
1791                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1792                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1793                        usbvision->alt_max_pkt_size[i]);
1794         }
1795
1796
1797         usbvision->nr = usbvision_nr++;
1798
1799         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1800         if (usbvision->have_tuner) {
1801                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1802         }
1803
1804         usbvision->tuner_addr = ADDR_UNSET;
1805
1806         usbvision->DevModel = model;
1807         usbvision->remove_pending = 0;
1808         usbvision->iface = ifnum;
1809         usbvision->ifaceAlt = 0;
1810         usbvision->video_endp = endpoint->bEndpointAddress;
1811         usbvision->isocPacketSize = 0;
1812         usbvision->usb_bandwidth = 0;
1813         usbvision->user = 0;
1814         usbvision->streaming = Stream_Off;
1815         usbvision_register_video(usbvision);
1816         usbvision_configure_video(usbvision);
1817         mutex_unlock(&usbvision->lock);
1818
1819
1820         usb_set_intfdata (intf, usbvision);
1821         usbvision_create_sysfs(usbvision->vdev);
1822
1823         PDEBUG(DBG_PROBE, "success");
1824         return 0;
1825 }
1826
1827
1828 /*
1829  * usbvision_disconnect()
1830  *
1831  * This procedure stops all driver activity, deallocates interface-private
1832  * structure (pointed by 'ptr') and after that driver should be removable
1833  * with no ill consequences.
1834  *
1835  */
1836 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1837 {
1838         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1839
1840         PDEBUG(DBG_PROBE, "");
1841
1842         if (usbvision == NULL) {
1843                 err("%s: usb_get_intfdata() failed", __func__);
1844                 return;
1845         }
1846         usb_set_intfdata (intf, NULL);
1847
1848         mutex_lock(&usbvision->lock);
1849
1850         // At this time we ask to cancel outstanding URBs
1851         usbvision_stop_isoc(usbvision);
1852
1853         if (usbvision->power) {
1854                 usbvision_i2c_unregister(usbvision);
1855                 usbvision_power_off(usbvision);
1856         }
1857         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1858
1859         usb_put_dev(usbvision->dev);
1860         usbvision->dev = NULL;  // USB device is no more
1861
1862         mutex_unlock(&usbvision->lock);
1863
1864         if (usbvision->user) {
1865                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1866                        __func__);
1867                 wake_up_interruptible(&usbvision->wait_frame);
1868                 wake_up_interruptible(&usbvision->wait_stream);
1869         } else {
1870                 usbvision_release(usbvision);
1871         }
1872
1873         PDEBUG(DBG_PROBE, "success");
1874 }
1875
1876 static struct usb_driver usbvision_driver = {
1877         .name           = "usbvision",
1878         .id_table       = usbvision_table,
1879         .probe          = usbvision_probe,
1880         .disconnect     = usbvision_disconnect
1881 };
1882
1883 /*
1884  * usbvision_init()
1885  *
1886  * This code is run to initialize the driver.
1887  *
1888  */
1889 static int __init usbvision_init(void)
1890 {
1891         int errCode;
1892
1893         PDEBUG(DBG_PROBE, "");
1894
1895         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1896         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1897         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1898
1899         /* disable planar mode support unless compression enabled */
1900         if (isocMode != ISOC_MODE_COMPRESS ) {
1901                 // FIXME : not the right way to set supported flag
1902                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1903                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1904         }
1905
1906         errCode = usb_register(&usbvision_driver);
1907
1908         if (errCode == 0) {
1909                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1910                 PDEBUG(DBG_PROBE, "success");
1911         }
1912         return errCode;
1913 }
1914
1915 static void __exit usbvision_exit(void)
1916 {
1917  PDEBUG(DBG_PROBE, "");
1918
1919  usb_deregister(&usbvision_driver);
1920  PDEBUG(DBG_PROBE, "success");
1921 }
1922
1923 module_init(usbvision_init);
1924 module_exit(usbvision_exit);
1925
1926 /*
1927  * Overrides for Emacs so that we follow Linus's tabbing style.
1928  * ---------------------------------------------------------------------------
1929  * Local variables:
1930  * c-basic-offset: 8
1931  * End:
1932  */