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

   1 /*
   2  * USB USBVISION Video device driver 0.9.10
   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/smp_lock.h>
  54 #include <linux/mm.h>
  55 #include <linux/utsname.h>
  56 #include <linux/highmem.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/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 #include "usbvision.h"
  73 #include "usbvision-cards.h"
  74
  75 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  76  Dwaine Garden <DwaineGarden@rogers.com>"
  77 #define DRIVER_NAME "usbvision"
  78 #define DRIVER_ALIAS "USBVision"
  79 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  80 #define DRIVER_LICENSE "GPL"
  81 #define USBVISION_DRIVER_VERSION_MAJOR 0
  82 #define USBVISION_DRIVER_VERSION_MINOR 9
  83 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
  84 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  85 USBVISION_DRIVER_VERSION_MINOR,\
  86 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  87 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  88  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  89  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90
  91 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  92
  93
  94 #ifdef USBVISION_DEBUG
  95         #define PDEBUG(level, fmt, args...) { \
  96                 if (video_debug & (level)) \
  97                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  98                                 __func__, __LINE__ , ## args); \
  99         }
 100 #else
 101         #define PDEBUG(level, fmt, args...) do {} while(0)
 102 #endif
 103
 104 #define DBG_IO          1<<1
 105 #define DBG_PROBE       1<<2
 106 #define DBG_MMAP        1<<3
 107
 108 //String operations
 109 #define rmspace(str)    while(*str==' ') str++;
 110 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 111
 112
 113 /* sequential number of usbvision device */
 114 static int usbvision_nr;
 115
 116 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 117         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 118         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 119         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 120         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 121         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 122         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 123         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 124         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 125 };
 126
 127 /* Function prototypes */
 128 static void usbvision_release(struct usb_usbvision *usbvision);
 129
 130 /* Default initialization of device driver parameters */
 131 /* Set the default format for ISOC endpoint */
 132 static int isocMode = ISOC_MODE_COMPRESS;
 133 /* Set the default Debug Mode of the device driver */
 134 static int video_debug;
 135 /* Set the default device to power on at startup */
 136 static int PowerOnAtOpen = 1;
 137 /* Sequential Number of Video Device */
 138 static int video_nr = -1;
 139 /* Sequential Number of Radio Device */
 140 static int radio_nr = -1;
 141 /* Sequential Number of VBI Device */
 142 static int vbi_nr = -1;
 143
 144 /* Grab parameters for the device driver */
 145
 146 /* Showing parameters under SYSFS */
 147 module_param(isocMode, int, 0444);
 148 module_param(video_debug, int, 0444);
 149 module_param(PowerOnAtOpen, int, 0444);
 150 module_param(video_nr, int, 0444);
 151 module_param(radio_nr, int, 0444);
 152 module_param(vbi_nr, int, 0444);
 153
 154 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 155 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 156 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 157 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 158 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 159 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 160
 161
 162 // Misc stuff
 163 MODULE_AUTHOR(DRIVER_AUTHOR);
 164 MODULE_DESCRIPTION(DRIVER_DESC);
 165 MODULE_LICENSE(DRIVER_LICENSE);
 166 MODULE_VERSION(USBVISION_VERSION_STRING);
 167 MODULE_ALIAS(DRIVER_ALIAS);
 168
 169
 170 /*****************************************************************************/
 171 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 172 /* Device information is located at /sys/class/video4linux/video0            */
 173 /* Device parameters information is located at /sys/module/usbvision         */
 174 /* Device USB Information is located at                                      */
 175 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 176 /*****************************************************************************/
 177
 178 #define YES_NO(x) ((x) ? "Yes" : "No")
 179
 180 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 181 {
 182         struct video_device *vdev =
 183                 container_of(cd, struct video_device, dev);
 184         return video_get_drvdata(vdev);
 185 }
 186
 187 static ssize_t show_version(struct device *cd,
 188                             struct device_attribute *attr, char *buf)
 189 {
 190         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 191 }
 192 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 193
 194 static ssize_t show_model(struct device *cd,
 195                           struct device_attribute *attr, char *buf)
 196 {
 197         struct video_device *vdev =
 198                 container_of(cd, struct video_device, dev);
 199         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 200         return sprintf(buf, "%s\n",
 201                        usbvision_device_data[usbvision->DevModel].ModelString);
 202 }
 203 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 204
 205 static ssize_t show_hue(struct device *cd,
 206                         struct device_attribute *attr, char *buf)
 207 {
 208         struct video_device *vdev =
 209                 container_of(cd, struct video_device, dev);
 210         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 211         struct v4l2_control ctrl;
 212         ctrl.id = V4L2_CID_HUE;
 213         ctrl.value = 0;
 214         if(usbvision->user)
 215                 call_all(usbvision, core, g_ctrl, &ctrl);
 216         return sprintf(buf, "%d\n", ctrl.value);
 217 }
 218 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 219
 220 static ssize_t show_contrast(struct device *cd,
 221                              struct device_attribute *attr, char *buf)
 222 {
 223         struct video_device *vdev =
 224                 container_of(cd, struct video_device, dev);
 225         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 226         struct v4l2_control ctrl;
 227         ctrl.id = V4L2_CID_CONTRAST;
 228         ctrl.value = 0;
 229         if(usbvision->user)
 230                 call_all(usbvision, core, g_ctrl, &ctrl);
 231         return sprintf(buf, "%d\n", ctrl.value);
 232 }
 233 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 234
 235 static ssize_t show_brightness(struct device *cd,
 236                                struct device_attribute *attr, char *buf)
 237 {
 238         struct video_device *vdev =
 239                 container_of(cd, struct video_device, 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_all(usbvision, core, g_ctrl, &ctrl);
 246         return sprintf(buf, "%d\n", ctrl.value);
 247 }
 248 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 249
 250 static ssize_t show_saturation(struct device *cd,
 251                                struct device_attribute *attr, char *buf)
 252 {
 253         struct video_device *vdev =
 254                 container_of(cd, struct video_device, dev);
 255         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 256         struct v4l2_control ctrl;
 257         ctrl.id = V4L2_CID_SATURATION;
 258         ctrl.value = 0;
 259         if(usbvision->user)
 260                 call_all(usbvision, core, g_ctrl, &ctrl);
 261         return sprintf(buf, "%d\n", ctrl.value);
 262 }
 263 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 264
 265 static ssize_t show_streaming(struct device *cd,
 266                               struct device_attribute *attr, char *buf)
 267 {
 268         struct video_device *vdev =
 269                 container_of(cd, struct video_device, dev);
 270         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 271         return sprintf(buf, "%s\n",
 272                        YES_NO(usbvision->streaming==Stream_On?1:0));
 273 }
 274 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 275
 276 static ssize_t show_compression(struct device *cd,
 277                                 struct device_attribute *attr, char *buf)
 278 {
 279         struct video_device *vdev =
 280                 container_of(cd, struct video_device, dev);
 281         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 282         return sprintf(buf, "%s\n",
 283                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 284 }
 285 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 286
 287 static ssize_t show_device_bridge(struct device *cd,
 288                                   struct device_attribute *attr, char *buf)
 289 {
 290         struct video_device *vdev =
 291                 container_of(cd, struct video_device, dev);
 292         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 293         return sprintf(buf, "%d\n", usbvision->bridgeType);
 294 }
 295 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 296
 297 static void usbvision_create_sysfs(struct video_device *vdev)
 298 {
 299         int res;
 300         if (!vdev)
 301                 return;
 302         do {
 303                 res = device_create_file(&vdev->dev, &dev_attr_version);
 304                 if (res<0)
 305                         break;
 306                 res = device_create_file(&vdev->dev, &dev_attr_model);
 307                 if (res<0)
 308                         break;
 309                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 313                 if (res<0)
 314                         break;
 315                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 316                 if (res<0)
 317                         break;
 318                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 319                 if (res<0)
 320                         break;
 321                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 322                 if (res<0)
 323                         break;
 324                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 325                 if (res<0)
 326                         break;
 327                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 328                 if (res>=0)
 329                         return;
 330         } while (0);
 331
 332         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 333 }
 334
 335 static void usbvision_remove_sysfs(struct video_device *vdev)
 336 {
 337         if (vdev) {
 338                 device_remove_file(&vdev->dev, &dev_attr_version);
 339                 device_remove_file(&vdev->dev, &dev_attr_model);
 340                 device_remove_file(&vdev->dev, &dev_attr_hue);
 341                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 342                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 343                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 344                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 345                 device_remove_file(&vdev->dev, &dev_attr_compression);
 346                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 347         }
 348 }
 349
 350 /*
 351  * usbvision_open()
 352  *
 353  * This is part of Video 4 Linux API. The driver can be opened by one
 354  * client only (checks internal counter 'usbvision->user'). The procedure
 355  * then allocates buffers needed for video processing.
 356  *
 357  */
 358 static int usbvision_v4l2_open(struct file *file)
 359 {
 360         struct usb_usbvision *usbvision = video_drvdata(file);
 361         int errCode = 0;
 362
 363         PDEBUG(DBG_IO, "open");
 364
 365         lock_kernel();
 366         usbvision_reset_powerOffTimer(usbvision);
 367
 368         if (usbvision->user)
 369                 errCode = -EBUSY;
 370         else {
 371                 /* Allocate memory for the scratch ring buffer */
 372                 errCode = usbvision_scratch_alloc(usbvision);
 373                 if (isocMode==ISOC_MODE_COMPRESS) {
 374                         /* Allocate intermediate decompression buffers
 375                            only if needed */
 376                         errCode = usbvision_decompress_alloc(usbvision);
 377                 }
 378                 if (errCode) {
 379                         /* Deallocate all buffers if trouble */
 380                         usbvision_scratch_free(usbvision);
 381                         usbvision_decompress_free(usbvision);
 382                 }
 383         }
 384
 385         /* If so far no errors then we shall start the camera */
 386         if (!errCode) {
 387                 mutex_lock(&usbvision->lock);
 388                 if (usbvision->power == 0) {
 389                         usbvision_power_on(usbvision);
 390                         usbvision_i2c_register(usbvision);
 391                 }
 392
 393                 /* Send init sequence only once, it's large! */
 394                 if (!usbvision->initialized) {
 395                         int setup_ok = 0;
 396                         setup_ok = usbvision_setup(usbvision,isocMode);
 397                         if (setup_ok)
 398                                 usbvision->initialized = 1;
 399                         else
 400                                 errCode = -EBUSY;
 401                 }
 402
 403                 if (!errCode) {
 404                         usbvision_begin_streaming(usbvision);
 405                         errCode = usbvision_init_isoc(usbvision);
 406                         /* device must be initialized before isoc transfer */
 407                         usbvision_muxsel(usbvision,0);
 408                         usbvision->user++;
 409                 } else {
 410                         if (PowerOnAtOpen) {
 411                                 usbvision_i2c_unregister(usbvision);
 412                                 usbvision_power_off(usbvision);
 413                                 usbvision->initialized = 0;
 414                         }
 415                 }
 416                 mutex_unlock(&usbvision->lock);
 417         }
 418
 419         /* prepare queues */
 420         usbvision_empty_framequeues(usbvision);
 421
 422         PDEBUG(DBG_IO, "success");
 423         unlock_kernel();
 424         return errCode;
 425 }
 426
 427 /*
 428  * usbvision_v4l2_close()
 429  *
 430  * This is part of Video 4 Linux API. The procedure
 431  * stops streaming and deallocates all buffers that were earlier
 432  * allocated in usbvision_v4l2_open().
 433  *
 434  */
 435 static int usbvision_v4l2_close(struct file *file)
 436 {
 437         struct usb_usbvision *usbvision = video_drvdata(file);
 438
 439         PDEBUG(DBG_IO, "close");
 440         mutex_lock(&usbvision->lock);
 441
 442         usbvision_audio_off(usbvision);
 443         usbvision_restart_isoc(usbvision);
 444         usbvision_stop_isoc(usbvision);
 445
 446         usbvision_decompress_free(usbvision);
 447         usbvision_frames_free(usbvision);
 448         usbvision_empty_framequeues(usbvision);
 449         usbvision_scratch_free(usbvision);
 450
 451         usbvision->user--;
 452
 453         if (PowerOnAtOpen) {
 454                 /* power off in a little while
 455                    to avoid off/on every close/open short sequences */
 456                 usbvision_set_powerOffTimer(usbvision);
 457                 usbvision->initialized = 0;
 458         }
 459
 460         mutex_unlock(&usbvision->lock);
 461
 462         if (usbvision->remove_pending) {
 463                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 464                 usbvision_release(usbvision);
 465         }
 466
 467         PDEBUG(DBG_IO, "success");
 468         return 0;
 469 }
 470
 471
 472 /*
 473  * usbvision_ioctl()
 474  *
 475  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 476  *
 477  */
 478 #ifdef CONFIG_VIDEO_ADV_DEBUG
 479 static int vidioc_g_register (struct file *file, void *priv,
 480                                 struct v4l2_dbg_register *reg)
 481 {
 482         struct usb_usbvision *usbvision = video_drvdata(file);
 483         int errCode;
 484
 485         if (!v4l2_chip_match_host(&reg->match))
 486                 return -EINVAL;
 487         /* NT100x has a 8-bit register space */
 488         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 489         if (errCode < 0) {
 490                 dev_err(&usbvision->vdev->dev,
 491                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 492                                 __func__, errCode);
 493                 return errCode;
 494         }
 495         reg->val = errCode;
 496         reg->size = 1;
 497         return 0;
 498 }
 499
 500 static int vidioc_s_register (struct file *file, void *priv,
 501                                 struct v4l2_dbg_register *reg)
 502 {
 503         struct usb_usbvision *usbvision = video_drvdata(file);
 504         int errCode;
 505
 506         if (!v4l2_chip_match_host(&reg->match))
 507                 return -EINVAL;
 508         /* NT100x has a 8-bit register space */
 509         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 510         if (errCode < 0) {
 511                 dev_err(&usbvision->vdev->dev,
 512                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 513                                 __func__, errCode);
 514                 return errCode;
 515         }
 516         return 0;
 517 }
 518 #endif
 519
 520 static int vidioc_querycap (struct file *file, void  *priv,
 521                                         struct v4l2_capability *vc)
 522 {
 523         struct usb_usbvision *usbvision = video_drvdata(file);
 524
 525         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 526         strlcpy(vc->card,
 527                 usbvision_device_data[usbvision->DevModel].ModelString,
 528                 sizeof(vc->card));
 529         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 530         vc->version = USBVISION_DRIVER_VERSION;
 531         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 532                 V4L2_CAP_AUDIO |
 533                 V4L2_CAP_READWRITE |
 534                 V4L2_CAP_STREAMING |
 535                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 536         return 0;
 537 }
 538
 539 static int vidioc_enum_input (struct file *file, void *priv,
 540                                 struct v4l2_input *vi)
 541 {
 542         struct usb_usbvision *usbvision = video_drvdata(file);
 543         int chan;
 544
 545         if (vi->index >= usbvision->video_inputs)
 546                 return -EINVAL;
 547         if (usbvision->have_tuner) {
 548                 chan = vi->index;
 549         } else {
 550                 chan = vi->index + 1; /*skip Television string*/
 551         }
 552         /* Determine the requested input characteristics
 553            specific for each usbvision card model */
 554         switch(chan) {
 555         case 0:
 556                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 557                         strcpy(vi->name, "White Video Input");
 558                 } else {
 559                         strcpy(vi->name, "Television");
 560                         vi->type = V4L2_INPUT_TYPE_TUNER;
 561                         vi->audioset = 1;
 562                         vi->tuner = chan;
 563                         vi->std = USBVISION_NORMS;
 564                 }
 565                 break;
 566         case 1:
 567                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 568                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 569                         strcpy(vi->name, "Green Video Input");
 570                 } else {
 571                         strcpy(vi->name, "Composite Video Input");
 572                 }
 573                 vi->std = V4L2_STD_PAL;
 574                 break;
 575         case 2:
 576                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 577                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 578                         strcpy(vi->name, "Yellow Video Input");
 579                 } else {
 580                         strcpy(vi->name, "S-Video Input");
 581                 }
 582                 vi->std = V4L2_STD_PAL;
 583                 break;
 584         case 3:
 585                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 586                 strcpy(vi->name, "Red Video Input");
 587                 vi->std = V4L2_STD_PAL;
 588                 break;
 589         }
 590         return 0;
 591 }
 592
 593 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 594 {
 595         struct usb_usbvision *usbvision = video_drvdata(file);
 596
 597         *input = usbvision->ctl_input;
 598         return 0;
 599 }
 600
 601 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 602 {
 603         struct usb_usbvision *usbvision = video_drvdata(file);
 604
 605         if ((input >= usbvision->video_inputs) || (input < 0) )
 606                 return -EINVAL;
 607
 608         mutex_lock(&usbvision->lock);
 609         usbvision_muxsel(usbvision, input);
 610         usbvision_set_input(usbvision);
 611         usbvision_set_output(usbvision,
 612                              usbvision->curwidth,
 613                              usbvision->curheight);
 614         mutex_unlock(&usbvision->lock);
 615         return 0;
 616 }
 617
 618 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 619 {
 620         struct usb_usbvision *usbvision = video_drvdata(file);
 621
 622         usbvision->tvnormId=*id;
 623
 624         mutex_lock(&usbvision->lock);
 625         call_all(usbvision, core, s_std, usbvision->tvnormId);
 626         mutex_unlock(&usbvision->lock);
 627         /* propagate the change to the decoder */
 628         usbvision_muxsel(usbvision, usbvision->ctl_input);
 629
 630         return 0;
 631 }
 632
 633 static int vidioc_g_tuner (struct file *file, void *priv,
 634                                 struct v4l2_tuner *vt)
 635 {
 636         struct usb_usbvision *usbvision = video_drvdata(file);
 637
 638         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 639                 return -EINVAL;
 640         if(usbvision->radio) {
 641                 strcpy(vt->name, "Radio");
 642                 vt->type = V4L2_TUNER_RADIO;
 643         } else {
 644                 strcpy(vt->name, "Television");
 645         }
 646         /* Let clients fill in the remainder of this struct */
 647         call_all(usbvision, tuner, g_tuner, vt);
 648
 649         return 0;
 650 }
 651
 652 static int vidioc_s_tuner (struct file *file, void *priv,
 653                                 struct v4l2_tuner *vt)
 654 {
 655         struct usb_usbvision *usbvision = video_drvdata(file);
 656
 657         // Only no or one tuner for now
 658         if (!usbvision->have_tuner || vt->index)
 659                 return -EINVAL;
 660         /* let clients handle this */
 661         call_all(usbvision, tuner, s_tuner, vt);
 662
 663         return 0;
 664 }
 665
 666 static int vidioc_g_frequency (struct file *file, void *priv,
 667                                 struct v4l2_frequency *freq)
 668 {
 669         struct usb_usbvision *usbvision = video_drvdata(file);
 670
 671         freq->tuner = 0; // Only one tuner
 672         if(usbvision->radio) {
 673                 freq->type = V4L2_TUNER_RADIO;
 674         } else {
 675                 freq->type = V4L2_TUNER_ANALOG_TV;
 676         }
 677         freq->frequency = usbvision->freq;
 678
 679         return 0;
 680 }
 681
 682 static int vidioc_s_frequency (struct file *file, void *priv,
 683                                 struct v4l2_frequency *freq)
 684 {
 685         struct usb_usbvision *usbvision = video_drvdata(file);
 686
 687         // Only no or one tuner for now
 688         if (!usbvision->have_tuner || freq->tuner)
 689                 return -EINVAL;
 690
 691         usbvision->freq = freq->frequency;
 692         call_all(usbvision, tuner, s_frequency, freq);
 693
 694         return 0;
 695 }
 696
 697 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 698 {
 699         struct usb_usbvision *usbvision = video_drvdata(file);
 700
 701         if(usbvision->radio) {
 702                 strcpy(a->name,"Radio");
 703         } else {
 704                 strcpy(a->name, "TV");
 705         }
 706
 707         return 0;
 708 }
 709
 710 static int vidioc_s_audio (struct file *file, void *fh,
 711                           struct v4l2_audio *a)
 712 {
 713         if(a->index) {
 714                 return -EINVAL;
 715         }
 716
 717         return 0;
 718 }
 719
 720 static int vidioc_queryctrl (struct file *file, void *priv,
 721                             struct v4l2_queryctrl *ctrl)
 722 {
 723         struct usb_usbvision *usbvision = video_drvdata(file);
 724
 725         call_all(usbvision, core, queryctrl, ctrl);
 726
 727         if (!ctrl->type)
 728                 return -EINVAL;
 729
 730         return 0;
 731 }
 732
 733 static int vidioc_g_ctrl (struct file *file, void *priv,
 734                                 struct v4l2_control *ctrl)
 735 {
 736         struct usb_usbvision *usbvision = video_drvdata(file);
 737         call_all(usbvision, core, g_ctrl, ctrl);
 738
 739         return 0;
 740 }
 741
 742 static int vidioc_s_ctrl (struct file *file, void *priv,
 743                                 struct v4l2_control *ctrl)
 744 {
 745         struct usb_usbvision *usbvision = video_drvdata(file);
 746         call_all(usbvision, core, s_ctrl, ctrl);
 747
 748         return 0;
 749 }
 750
 751 static int vidioc_reqbufs (struct file *file,
 752                            void *priv, struct v4l2_requestbuffers *vr)
 753 {
 754         struct usb_usbvision *usbvision = video_drvdata(file);
 755         int ret;
 756
 757         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 758
 759         /* Check input validity:
 760            the user must do a VIDEO CAPTURE and MMAP method. */
 761         if (vr->memory != V4L2_MEMORY_MMAP)
 762                 return -EINVAL;
 763
 764         if(usbvision->streaming == Stream_On) {
 765                 if ((ret = usbvision_stream_interrupt(usbvision)))
 766                         return ret;
 767         }
 768
 769         usbvision_frames_free(usbvision);
 770         usbvision_empty_framequeues(usbvision);
 771         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 772
 773         usbvision->curFrame = NULL;
 774
 775         return 0;
 776 }
 777
 778 static int vidioc_querybuf (struct file *file,
 779                             void *priv, struct v4l2_buffer *vb)
 780 {
 781         struct usb_usbvision *usbvision = video_drvdata(file);
 782         struct usbvision_frame *frame;
 783
 784         /* FIXME : must control
 785            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 786         if(vb->index>=usbvision->num_frames)  {
 787                 return -EINVAL;
 788         }
 789         /* Updating the corresponding frame state */
 790         vb->flags = 0;
 791         frame = &usbvision->frame[vb->index];
 792         if(frame->grabstate >= FrameState_Ready)
 793                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 794         if(frame->grabstate >= FrameState_Done)
 795                 vb->flags |= V4L2_BUF_FLAG_DONE;
 796         if(frame->grabstate == FrameState_Unused)
 797                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 798         vb->memory = V4L2_MEMORY_MMAP;
 799
 800         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 801
 802         vb->memory = V4L2_MEMORY_MMAP;
 803         vb->field = V4L2_FIELD_NONE;
 804         vb->length = usbvision->curwidth*
 805                 usbvision->curheight*
 806                 usbvision->palette.bytes_per_pixel;
 807         vb->timestamp = usbvision->frame[vb->index].timestamp;
 808         vb->sequence = usbvision->frame[vb->index].sequence;
 809         return 0;
 810 }
 811
 812 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 813 {
 814         struct usb_usbvision *usbvision = video_drvdata(file);
 815         struct usbvision_frame *frame;
 816         unsigned long lock_flags;
 817
 818         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 819         if(vb->index>=usbvision->num_frames)  {
 820                 return -EINVAL;
 821         }
 822
 823         frame = &usbvision->frame[vb->index];
 824
 825         if (frame->grabstate != FrameState_Unused) {
 826                 return -EAGAIN;
 827         }
 828
 829         /* Mark it as ready and enqueue frame */
 830         frame->grabstate = FrameState_Ready;
 831         frame->scanstate = ScanState_Scanning;
 832         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 833
 834         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 835
 836         /* set v4l2_format index */
 837         frame->v4l2_format = usbvision->palette;
 838
 839         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 840         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 841         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 842
 843         return 0;
 844 }
 845
 846 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 847 {
 848         struct usb_usbvision *usbvision = video_drvdata(file);
 849         int ret;
 850         struct usbvision_frame *f;
 851         unsigned long lock_flags;
 852
 853         if (list_empty(&(usbvision->outqueue))) {
 854                 if (usbvision->streaming == Stream_Idle)
 855                         return -EINVAL;
 856                 ret = wait_event_interruptible
 857                         (usbvision->wait_frame,
 858                          !list_empty(&(usbvision->outqueue)));
 859                 if (ret)
 860                         return ret;
 861         }
 862
 863         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 864         f = list_entry(usbvision->outqueue.next,
 865                        struct usbvision_frame, frame);
 866         list_del(usbvision->outqueue.next);
 867         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 868
 869         f->grabstate = FrameState_Unused;
 870
 871         vb->memory = V4L2_MEMORY_MMAP;
 872         vb->flags = V4L2_BUF_FLAG_MAPPED |
 873                 V4L2_BUF_FLAG_QUEUED |
 874                 V4L2_BUF_FLAG_DONE;
 875         vb->index = f->index;
 876         vb->sequence = f->sequence;
 877         vb->timestamp = f->timestamp;
 878         vb->field = V4L2_FIELD_NONE;
 879         vb->bytesused = f->scanlength;
 880
 881         return 0;
 882 }
 883
 884 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 885 {
 886         struct usb_usbvision *usbvision = video_drvdata(file);
 887
 888         usbvision->streaming = Stream_On;
 889         call_all(usbvision, video, s_stream, 1);
 890
 891         return 0;
 892 }
 893
 894 static int vidioc_streamoff(struct file *file,
 895                             void *priv, enum v4l2_buf_type type)
 896 {
 897         struct usb_usbvision *usbvision = video_drvdata(file);
 898
 899         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 900                 return -EINVAL;
 901
 902         if(usbvision->streaming == Stream_On) {
 903                 usbvision_stream_interrupt(usbvision);
 904                 /* Stop all video streamings */
 905                 call_all(usbvision, video, s_stream, 0);
 906         }
 907         usbvision_empty_framequeues(usbvision);
 908
 909         return 0;
 910 }
 911
 912 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 913                                         struct v4l2_fmtdesc *vfd)
 914 {
 915         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 916                 return -EINVAL;
 917         }
 918         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 919         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 920         return 0;
 921 }
 922
 923 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 924                                         struct v4l2_format *vf)
 925 {
 926         struct usb_usbvision *usbvision = video_drvdata(file);
 927         vf->fmt.pix.width = usbvision->curwidth;
 928         vf->fmt.pix.height = usbvision->curheight;
 929         vf->fmt.pix.pixelformat = usbvision->palette.format;
 930         vf->fmt.pix.bytesperline =
 931                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 932         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 933         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 934         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 935
 936         return 0;
 937 }
 938
 939 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 940                                struct v4l2_format *vf)
 941 {
 942         struct usb_usbvision *usbvision = video_drvdata(file);
 943         int formatIdx;
 944
 945         /* Find requested format in available ones */
 946         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 947                 if(vf->fmt.pix.pixelformat ==
 948                    usbvision_v4l2_format[formatIdx].format) {
 949                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 950                         break;
 951                 }
 952         }
 953         /* robustness */
 954         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 955                 return -EINVAL;
 956         }
 957         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 958         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 959
 960         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 961                 usbvision->palette.bytes_per_pixel;
 962         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 963
 964         return 0;
 965 }
 966
 967 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 968                                struct v4l2_format *vf)
 969 {
 970         struct usb_usbvision *usbvision = video_drvdata(file);
 971         int ret;
 972
 973         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
 974                 return ret;
 975         }
 976
 977         /* stop io in case it is already in progress */
 978         if(usbvision->streaming == Stream_On) {
 979                 if ((ret = usbvision_stream_interrupt(usbvision)))
 980                         return ret;
 981         }
 982         usbvision_frames_free(usbvision);
 983         usbvision_empty_framequeues(usbvision);
 984
 985         usbvision->curFrame = NULL;
 986
 987         /* by now we are committed to the new data... */
 988         mutex_lock(&usbvision->lock);
 989         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 990         mutex_unlock(&usbvision->lock);
 991
 992         return 0;
 993 }
 994
 995 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
 996                       size_t count, loff_t *ppos)
 997 {
 998         struct usb_usbvision *usbvision = video_drvdata(file);
 999         int noblock = file->f_flags & O_NONBLOCK;
1000         unsigned long lock_flags;
1001
1002         int ret,i;
1003         struct usbvision_frame *frame;
1004
1005         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1006                (unsigned long)count, noblock);
1007
1008         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1009                 return -EFAULT;
1010
1011         /* This entry point is compatible with the mmap routines
1012            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1013            to get frames or call read on the device. */
1014         if(!usbvision->num_frames) {
1015                 /* First, allocate some frames to work with
1016                    if this has not been done with VIDIOC_REQBUF */
1017                 usbvision_frames_free(usbvision);
1018                 usbvision_empty_framequeues(usbvision);
1019                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1020         }
1021
1022         if(usbvision->streaming != Stream_On) {
1023                 /* no stream is running, make it running ! */
1024                 usbvision->streaming = Stream_On;
1025                 call_all(usbvision, video, s_stream, 1);
1026         }
1027
1028         /* Then, enqueue as many frames as possible
1029            (like a user of VIDIOC_QBUF would do) */
1030         for(i=0;i<usbvision->num_frames;i++) {
1031                 frame = &usbvision->frame[i];
1032                 if(frame->grabstate == FrameState_Unused) {
1033                         /* Mark it as ready and enqueue frame */
1034                         frame->grabstate = FrameState_Ready;
1035                         frame->scanstate = ScanState_Scanning;
1036                         /* Accumulated in usbvision_parse_data() */
1037                         frame->scanlength = 0;
1038
1039                         /* set v4l2_format index */
1040                         frame->v4l2_format = usbvision->palette;
1041
1042                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1043                         list_add_tail(&frame->frame, &usbvision->inqueue);
1044                         spin_unlock_irqrestore(&usbvision->queue_lock,
1045                                                lock_flags);
1046                 }
1047         }
1048
1049         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1050         if (list_empty(&(usbvision->outqueue))) {
1051                 if(noblock)
1052                         return -EAGAIN;
1053
1054                 ret = wait_event_interruptible
1055                         (usbvision->wait_frame,
1056                          !list_empty(&(usbvision->outqueue)));
1057                 if (ret)
1058                         return ret;
1059         }
1060
1061         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1062         frame = list_entry(usbvision->outqueue.next,
1063                            struct usbvision_frame, frame);
1064         list_del(usbvision->outqueue.next);
1065         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1066
1067         /* An error returns an empty frame */
1068         if (frame->grabstate == FrameState_Error) {
1069                 frame->bytes_read = 0;
1070                 return 0;
1071         }
1072
1073         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1074                __func__,
1075                frame->index, frame->bytes_read, frame->scanlength);
1076
1077         /* copy bytes to user space; we allow for partials reads */
1078         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1079                 count = frame->scanlength - frame->bytes_read;
1080
1081         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1082                 return -EFAULT;
1083         }
1084
1085         frame->bytes_read += count;
1086         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1087                __func__,
1088                (unsigned long)count, frame->bytes_read);
1089
1090         /* For now, forget the frame if it has not been read in one shot. */
1091 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1092                 frame->bytes_read = 0;
1093
1094                 /* Mark it as available to be used again. */
1095                 frame->grabstate = FrameState_Unused;
1096 /*      } */
1097
1098         return count;
1099 }
1100
1101 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1102 {
1103         unsigned long size = vma->vm_end - vma->vm_start,
1104                 start = vma->vm_start;
1105         void *pos;
1106         u32 i;
1107         struct usb_usbvision *usbvision = video_drvdata(file);
1108
1109         PDEBUG(DBG_MMAP, "mmap");
1110
1111         mutex_lock(&usbvision->lock);
1112
1113         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1114                 mutex_unlock(&usbvision->lock);
1115                 return -EFAULT;
1116         }
1117
1118         if (!(vma->vm_flags & VM_WRITE) ||
1119             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1120                 mutex_unlock(&usbvision->lock);
1121                 return -EINVAL;
1122         }
1123
1124         for (i = 0; i < usbvision->num_frames; i++) {
1125                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1126                     vma->vm_pgoff)
1127                         break;
1128         }
1129         if (i == usbvision->num_frames) {
1130                 PDEBUG(DBG_MMAP,
1131                        "mmap: user supplied mapping address is out of range");
1132                 mutex_unlock(&usbvision->lock);
1133                 return -EINVAL;
1134         }
1135
1136         /* VM_IO is eventually going to replace PageReserved altogether */
1137         vma->vm_flags |= VM_IO;
1138         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1139
1140         pos = usbvision->frame[i].data;
1141         while (size > 0) {
1142
1143                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1144                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1145                         mutex_unlock(&usbvision->lock);
1146                         return -EAGAIN;
1147                 }
1148                 start += PAGE_SIZE;
1149                 pos += PAGE_SIZE;
1150                 size -= PAGE_SIZE;
1151         }
1152
1153         mutex_unlock(&usbvision->lock);
1154         return 0;
1155 }
1156
1157
1158 /*
1159  * Here comes the stuff for radio on usbvision based devices
1160  *
1161  */
1162 static int usbvision_radio_open(struct file *file)
1163 {
1164         struct usb_usbvision *usbvision = video_drvdata(file);
1165         int errCode = 0;
1166
1167         PDEBUG(DBG_IO, "%s:", __func__);
1168
1169         mutex_lock(&usbvision->lock);
1170
1171         if (usbvision->user) {
1172                 dev_err(&usbvision->rdev->dev,
1173                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1174                                 __func__);
1175                 errCode = -EBUSY;
1176         }
1177         else {
1178                 if(PowerOnAtOpen) {
1179                         usbvision_reset_powerOffTimer(usbvision);
1180                         if (usbvision->power == 0) {
1181                                 usbvision_power_on(usbvision);
1182                                 usbvision_i2c_register(usbvision);
1183                         }
1184                 }
1185
1186                 /* Alternate interface 1 is is the biggest frame size */
1187                 errCode = usbvision_set_alternate(usbvision);
1188                 if (errCode < 0) {
1189                         usbvision->last_error = errCode;
1190                         errCode = -EBUSY;
1191                         goto out;
1192                 }
1193
1194                 // If so far no errors then we shall start the radio
1195                 usbvision->radio = 1;
1196                 call_all(usbvision, tuner, s_radio);
1197                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1198                 usbvision->user++;
1199         }
1200
1201         if (errCode) {
1202                 if (PowerOnAtOpen) {
1203                         usbvision_i2c_unregister(usbvision);
1204                         usbvision_power_off(usbvision);
1205                         usbvision->initialized = 0;
1206                 }
1207         }
1208 out:
1209         mutex_unlock(&usbvision->lock);
1210         return errCode;
1211 }
1212
1213
1214 static int usbvision_radio_close(struct file *file)
1215 {
1216         struct usb_usbvision *usbvision = video_drvdata(file);
1217         int errCode = 0;
1218
1219         PDEBUG(DBG_IO, "");
1220
1221         mutex_lock(&usbvision->lock);
1222
1223         /* Set packet size to 0 */
1224         usbvision->ifaceAlt=0;
1225         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1226                                     usbvision->ifaceAlt);
1227
1228         usbvision_audio_off(usbvision);
1229         usbvision->radio=0;
1230         usbvision->user--;
1231
1232         if (PowerOnAtOpen) {
1233                 usbvision_set_powerOffTimer(usbvision);
1234                 usbvision->initialized = 0;
1235         }
1236
1237         mutex_unlock(&usbvision->lock);
1238
1239         if (usbvision->remove_pending) {
1240                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1241                 usbvision_release(usbvision);
1242         }
1243
1244         PDEBUG(DBG_IO, "success");
1245         return errCode;
1246 }
1247
1248 /*
1249  * Here comes the stuff for vbi on usbvision based devices
1250  *
1251  */
1252 static int usbvision_vbi_open(struct file *file)
1253 {
1254         /* TODO */
1255         return -ENODEV;
1256 }
1257
1258 static int usbvision_vbi_close(struct file *file)
1259 {
1260         /* TODO */
1261         return -ENODEV;
1262 }
1263
1264 static long usbvision_do_vbi_ioctl(struct file *file,
1265                                  unsigned int cmd, void *arg)
1266 {
1267         /* TODO */
1268         return -ENOIOCTLCMD;
1269 }
1270
1271 static long usbvision_vbi_ioctl(struct file *file,
1272                        unsigned int cmd, unsigned long arg)
1273 {
1274         return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1275 }
1276
1277
1278 //
1279 // Video registration stuff
1280 //
1281
1282 // Video template
1283 static const struct v4l2_file_operations usbvision_fops = {
1284         .owner             = THIS_MODULE,
1285         .open           = usbvision_v4l2_open,
1286         .release        = usbvision_v4l2_close,
1287         .read           = usbvision_v4l2_read,
1288         .mmap           = usbvision_v4l2_mmap,
1289         .ioctl          = video_ioctl2,
1290 /*      .poll          = video_poll, */
1291 };
1292
1293 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1294         .vidioc_querycap      = vidioc_querycap,
1295         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1296         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1297         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1298         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1299         .vidioc_reqbufs       = vidioc_reqbufs,
1300         .vidioc_querybuf      = vidioc_querybuf,
1301         .vidioc_qbuf          = vidioc_qbuf,
1302         .vidioc_dqbuf         = vidioc_dqbuf,
1303         .vidioc_s_std         = vidioc_s_std,
1304         .vidioc_enum_input    = vidioc_enum_input,
1305         .vidioc_g_input       = vidioc_g_input,
1306         .vidioc_s_input       = vidioc_s_input,
1307         .vidioc_queryctrl     = vidioc_queryctrl,
1308         .vidioc_g_audio       = vidioc_g_audio,
1309         .vidioc_s_audio       = vidioc_s_audio,
1310         .vidioc_g_ctrl        = vidioc_g_ctrl,
1311         .vidioc_s_ctrl        = vidioc_s_ctrl,
1312         .vidioc_streamon      = vidioc_streamon,
1313         .vidioc_streamoff     = vidioc_streamoff,
1314 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1315 /*      .vidiocgmbuf          = vidiocgmbuf, */
1316 #endif
1317         .vidioc_g_tuner       = vidioc_g_tuner,
1318         .vidioc_s_tuner       = vidioc_s_tuner,
1319         .vidioc_g_frequency   = vidioc_g_frequency,
1320         .vidioc_s_frequency   = vidioc_s_frequency,
1321 #ifdef CONFIG_VIDEO_ADV_DEBUG
1322         .vidioc_g_register    = vidioc_g_register,
1323         .vidioc_s_register    = vidioc_s_register,
1324 #endif
1325 };
1326
1327 static struct video_device usbvision_video_template = {
1328         .fops           = &usbvision_fops,
1329         .ioctl_ops      = &usbvision_ioctl_ops,
1330         .name           = "usbvision-video",
1331         .release        = video_device_release,
1332         .minor          = -1,
1333         .tvnorms              = USBVISION_NORMS,
1334         .current_norm         = V4L2_STD_PAL
1335 };
1336
1337
1338 // Radio template
1339 static const struct v4l2_file_operations usbvision_radio_fops = {
1340         .owner             = THIS_MODULE,
1341         .open           = usbvision_radio_open,
1342         .release        = usbvision_radio_close,
1343         .ioctl          = video_ioctl2,
1344 };
1345
1346 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1347         .vidioc_querycap      = vidioc_querycap,
1348         .vidioc_enum_input    = vidioc_enum_input,
1349         .vidioc_g_input       = vidioc_g_input,
1350         .vidioc_s_input       = vidioc_s_input,
1351         .vidioc_queryctrl     = vidioc_queryctrl,
1352         .vidioc_g_audio       = vidioc_g_audio,
1353         .vidioc_s_audio       = vidioc_s_audio,
1354         .vidioc_g_ctrl        = vidioc_g_ctrl,
1355         .vidioc_s_ctrl        = vidioc_s_ctrl,
1356         .vidioc_g_tuner       = vidioc_g_tuner,
1357         .vidioc_s_tuner       = vidioc_s_tuner,
1358         .vidioc_g_frequency   = vidioc_g_frequency,
1359         .vidioc_s_frequency   = vidioc_s_frequency,
1360 };
1361
1362 static struct video_device usbvision_radio_template = {
1363         .fops           = &usbvision_radio_fops,
1364         .name           = "usbvision-radio",
1365         .release        = video_device_release,
1366         .minor          = -1,
1367         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1368
1369         .tvnorms              = USBVISION_NORMS,
1370         .current_norm         = V4L2_STD_PAL
1371 };
1372
1373 // vbi template
1374 static const struct v4l2_file_operations usbvision_vbi_fops = {
1375         .owner             = THIS_MODULE,
1376         .open           = usbvision_vbi_open,
1377         .release        = usbvision_vbi_close,
1378         .ioctl          = usbvision_vbi_ioctl,
1379 };
1380
1381 static struct video_device usbvision_vbi_template=
1382 {
1383         .fops           = &usbvision_vbi_fops,
1384         .release        = video_device_release,
1385         .name           = "usbvision-vbi",
1386         .minor          = -1,
1387 };
1388
1389
1390 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1391                                         struct video_device *vdev_template,
1392                                         char *name)
1393 {
1394         struct usb_device *usb_dev = usbvision->dev;
1395         struct video_device *vdev;
1396
1397         if (usb_dev == NULL) {
1398                 dev_err(&usbvision->dev->dev,
1399                         "%s: usbvision->dev is not set\n", __func__);
1400                 return NULL;
1401         }
1402
1403         vdev = video_device_alloc();
1404         if (NULL == vdev) {
1405                 return NULL;
1406         }
1407         *vdev = *vdev_template;
1408 //      vdev->minor   = -1;
1409         vdev->v4l2_dev = &usbvision->v4l2_dev;
1410         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1411         video_set_drvdata(vdev, usbvision);
1412         return vdev;
1413 }
1414
1415 // unregister video4linux devices
1416 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1417 {
1418         // vbi Device:
1419         if (usbvision->vbi) {
1420                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1421                        usbvision->vbi->num);
1422                 if (usbvision->vbi->minor != -1) {
1423                         video_unregister_device(usbvision->vbi);
1424                 } else {
1425                         video_device_release(usbvision->vbi);
1426                 }
1427                 usbvision->vbi = NULL;
1428         }
1429
1430         // Radio Device:
1431         if (usbvision->rdev) {
1432                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1433                        usbvision->rdev->num);
1434                 if (usbvision->rdev->minor != -1) {
1435                         video_unregister_device(usbvision->rdev);
1436                 } else {
1437                         video_device_release(usbvision->rdev);
1438                 }
1439                 usbvision->rdev = NULL;
1440         }
1441
1442         // Video Device:
1443         if (usbvision->vdev) {
1444                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1445                        usbvision->vdev->num);
1446                 if (usbvision->vdev->minor != -1) {
1447                         video_unregister_device(usbvision->vdev);
1448                 } else {
1449                         video_device_release(usbvision->vdev);
1450                 }
1451                 usbvision->vdev = NULL;
1452         }
1453 }
1454
1455 // register video4linux devices
1456 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1457 {
1458         // Video Device:
1459         usbvision->vdev = usbvision_vdev_init(usbvision,
1460                                               &usbvision_video_template,
1461                                               "USBVision Video");
1462         if (usbvision->vdev == NULL) {
1463                 goto err_exit;
1464         }
1465         if (video_register_device(usbvision->vdev,
1466                                   VFL_TYPE_GRABBER,
1467                                   video_nr)<0) {
1468                 goto err_exit;
1469         }
1470         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1471                usbvision->nr, usbvision->vdev->num);
1472
1473         // Radio Device:
1474         if (usbvision_device_data[usbvision->DevModel].Radio) {
1475                 // usbvision has radio
1476                 usbvision->rdev = usbvision_vdev_init(usbvision,
1477                                                       &usbvision_radio_template,
1478                                                       "USBVision Radio");
1479                 if (usbvision->rdev == NULL) {
1480                         goto err_exit;
1481                 }
1482                 if (video_register_device(usbvision->rdev,
1483                                           VFL_TYPE_RADIO,
1484                                           radio_nr)<0) {
1485                         goto err_exit;
1486                 }
1487                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1488                        usbvision->nr, usbvision->rdev->num);
1489         }
1490         // vbi Device:
1491         if (usbvision_device_data[usbvision->DevModel].vbi) {
1492                 usbvision->vbi = usbvision_vdev_init(usbvision,
1493                                                      &usbvision_vbi_template,
1494                                                      "USBVision VBI");
1495                 if (usbvision->vdev == NULL) {
1496                         goto err_exit;
1497                 }
1498                 if (video_register_device(usbvision->vbi,
1499                                           VFL_TYPE_VBI,
1500                                           vbi_nr)<0) {
1501                         goto err_exit;
1502                 }
1503                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1504                        usbvision->nr, usbvision->vbi->num);
1505         }
1506         // all done
1507         return 0;
1508
1509  err_exit:
1510         dev_err(&usbvision->dev->dev,
1511                 "USBVision[%d]: video_register_device() failed\n",
1512                         usbvision->nr);
1513         usbvision_unregister_video(usbvision);
1514         return -1;
1515 }
1516
1517 /*
1518  * usbvision_alloc()
1519  *
1520  * This code allocates the struct usb_usbvision.
1521  * It is filled with default values.
1522  *
1523  * Returns NULL on error, a pointer to usb_usbvision else.
1524  *
1525  */
1526 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1527                                              struct usb_interface *intf)
1528 {
1529         struct usb_usbvision *usbvision;
1530
1531         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1532         if (usbvision == NULL)
1533                 return NULL;
1534
1535         usbvision->dev = dev;
1536         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1537                 goto err_free;
1538
1539         mutex_init(&usbvision->lock);   /* available */
1540
1541         // prepare control urb for control messages during interrupts
1542         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1543         if (usbvision->ctrlUrb == NULL)
1544                 goto err_unreg;
1545         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1546
1547         usbvision_init_powerOffTimer(usbvision);
1548
1549         return usbvision;
1550
1551 err_unreg:
1552         v4l2_device_unregister(&usbvision->v4l2_dev);
1553 err_free:
1554         kfree(usbvision);
1555         return NULL;
1556 }
1557
1558 /*
1559  * usbvision_release()
1560  *
1561  * This code does final release of struct usb_usbvision. This happens
1562  * after the device is disconnected -and- all clients closed their files.
1563  *
1564  */
1565 static void usbvision_release(struct usb_usbvision *usbvision)
1566 {
1567         PDEBUG(DBG_PROBE, "");
1568
1569         mutex_lock(&usbvision->lock);
1570
1571         usbvision_reset_powerOffTimer(usbvision);
1572
1573         usbvision->initialized = 0;
1574
1575         mutex_unlock(&usbvision->lock);
1576
1577         usbvision_remove_sysfs(usbvision->vdev);
1578         usbvision_unregister_video(usbvision);
1579
1580         if (usbvision->ctrlUrb) {
1581                 usb_free_urb(usbvision->ctrlUrb);
1582         }
1583
1584         v4l2_device_unregister(&usbvision->v4l2_dev);
1585         kfree(usbvision);
1586
1587         PDEBUG(DBG_PROBE, "success");
1588 }
1589
1590
1591 /*********************** usb interface **********************************/
1592
1593 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1594 {
1595         int model;
1596
1597         if (usbvision == NULL)
1598                 return;
1599
1600         model = usbvision->DevModel;
1601         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1602
1603         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1604                 usbvision->Vin_Reg2_Preset =
1605                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1606         } else {
1607                 usbvision->Vin_Reg2_Preset = 0;
1608         }
1609
1610         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1611
1612         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1613         usbvision->ctl_input = 0;
1614
1615         /* This should be here to make i2c clients to be able to register */
1616         /* first switch off audio */
1617         usbvision_audio_off(usbvision);
1618         if (!PowerOnAtOpen) {
1619                 /* and then power up the noisy tuner */
1620                 usbvision_power_on(usbvision);
1621                 usbvision_i2c_register(usbvision);
1622         }
1623 }
1624
1625 /*
1626  * usbvision_probe()
1627  *
1628  * This procedure queries device descriptor and accepts the interface
1629  * if it looks like USBVISION video device
1630  *
1631  */
1632 static int __devinit usbvision_probe(struct usb_interface *intf,
1633                                      const struct usb_device_id *devid)
1634 {
1635         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1636         struct usb_interface *uif;
1637         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1638         const struct usb_host_interface *interface;
1639         struct usb_usbvision *usbvision = NULL;
1640         const struct usb_endpoint_descriptor *endpoint;
1641         int model,i;
1642
1643         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1644                                 dev->descriptor.idVendor,
1645                                 dev->descriptor.idProduct, ifnum);
1646
1647         model = devid->driver_info;
1648         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1649                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1650                 return -ENODEV;
1651         }
1652         printk(KERN_INFO "%s: %s found\n", __func__,
1653                                 usbvision_device_data[model].ModelString);
1654
1655         if (usbvision_device_data[model].Interface >= 0) {
1656                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1657         } else {
1658                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1659         }
1660         endpoint = &interface->endpoint[1].desc;
1661         if (!usb_endpoint_xfer_isoc(endpoint)) {
1662                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1663                     __func__, ifnum);
1664                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1665                     __func__, endpoint->bmAttributes);
1666                 return -ENODEV;
1667         }
1668         if (usb_endpoint_dir_out(endpoint)) {
1669                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1670                     __func__, ifnum);
1671                 return -ENODEV;
1672         }
1673
1674         usbvision = usbvision_alloc(dev, intf);
1675         if (usbvision == NULL) {
1676                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1677                 return -ENOMEM;
1678         }
1679
1680         if (dev->descriptor.bNumConfigurations > 1) {
1681                 usbvision->bridgeType = BRIDGE_NT1004;
1682         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1683                 usbvision->bridgeType = BRIDGE_NT1005;
1684         } else {
1685                 usbvision->bridgeType = BRIDGE_NT1003;
1686         }
1687         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1688
1689         mutex_lock(&usbvision->lock);
1690
1691         /* compute alternate max packet sizes */
1692         uif = dev->actconfig->interface[0];
1693
1694         usbvision->num_alt=uif->num_altsetting;
1695         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1696         usbvision->alt_max_pkt_size = kmalloc(32*
1697                                               usbvision->num_alt,GFP_KERNEL);
1698         if (usbvision->alt_max_pkt_size == NULL) {
1699                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1700                 mutex_unlock(&usbvision->lock);
1701                 return -ENOMEM;
1702         }
1703
1704         for (i = 0; i < usbvision->num_alt ; i++) {
1705                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1706                                       wMaxPacketSize);
1707                 usbvision->alt_max_pkt_size[i] =
1708                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1709                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1710                        usbvision->alt_max_pkt_size[i]);
1711         }
1712
1713
1714         usbvision->nr = usbvision_nr++;
1715
1716         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1717         if (usbvision->have_tuner) {
1718                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1719         }
1720
1721         usbvision->DevModel = model;
1722         usbvision->remove_pending = 0;
1723         usbvision->iface = ifnum;
1724         usbvision->ifaceAlt = 0;
1725         usbvision->video_endp = endpoint->bEndpointAddress;
1726         usbvision->isocPacketSize = 0;
1727         usbvision->usb_bandwidth = 0;
1728         usbvision->user = 0;
1729         usbvision->streaming = Stream_Off;
1730         usbvision_register_video(usbvision);
1731         usbvision_configure_video(usbvision);
1732         mutex_unlock(&usbvision->lock);
1733
1734
1735         usb_set_intfdata (intf, usbvision);
1736         usbvision_create_sysfs(usbvision->vdev);
1737
1738         PDEBUG(DBG_PROBE, "success");
1739         return 0;
1740 }
1741
1742
1743 /*
1744  * usbvision_disconnect()
1745  *
1746  * This procedure stops all driver activity, deallocates interface-private
1747  * structure (pointed by 'ptr') and after that driver should be removable
1748  * with no ill consequences.
1749  *
1750  */
1751 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1752 {
1753         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1754
1755         PDEBUG(DBG_PROBE, "");
1756
1757         if (usbvision == NULL) {
1758                 dev_err(&usbvision->dev->dev,
1759                         "%s: usb_get_intfdata() failed\n", __func__);
1760                 return;
1761         }
1762         usb_set_intfdata (intf, NULL);
1763
1764         mutex_lock(&usbvision->lock);
1765
1766         // At this time we ask to cancel outstanding URBs
1767         usbvision_stop_isoc(usbvision);
1768
1769         v4l2_device_disconnect(&usbvision->v4l2_dev);
1770
1771         if (usbvision->power) {
1772                 usbvision_i2c_unregister(usbvision);
1773                 usbvision_power_off(usbvision);
1774         }
1775         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1776
1777         usb_put_dev(usbvision->dev);
1778         usbvision->dev = NULL;  // USB device is no more
1779
1780         mutex_unlock(&usbvision->lock);
1781
1782         if (usbvision->user) {
1783                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1784                        __func__);
1785                 wake_up_interruptible(&usbvision->wait_frame);
1786                 wake_up_interruptible(&usbvision->wait_stream);
1787         } else {
1788                 usbvision_release(usbvision);
1789         }
1790
1791         PDEBUG(DBG_PROBE, "success");
1792 }
1793
1794 static struct usb_driver usbvision_driver = {
1795         .name           = "usbvision",
1796         .id_table       = usbvision_table,
1797         .probe          = usbvision_probe,
1798         .disconnect     = __devexit_p(usbvision_disconnect),
1799 };
1800
1801 /*
1802  * usbvision_init()
1803  *
1804  * This code is run to initialize the driver.
1805  *
1806  */
1807 static int __init usbvision_init(void)
1808 {
1809         int errCode;
1810
1811         PDEBUG(DBG_PROBE, "");
1812
1813         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1814         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1815         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1816
1817         /* disable planar mode support unless compression enabled */
1818         if (isocMode != ISOC_MODE_COMPRESS ) {
1819                 // FIXME : not the right way to set supported flag
1820                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1821                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1822         }
1823
1824         errCode = usb_register(&usbvision_driver);
1825
1826         if (errCode == 0) {
1827                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1828                 PDEBUG(DBG_PROBE, "success");
1829         }
1830         return errCode;
1831 }
1832
1833 static void __exit usbvision_exit(void)
1834 {
1835  PDEBUG(DBG_PROBE, "");
1836
1837  usb_deregister(&usbvision_driver);
1838  PDEBUG(DBG_PROBE, "success");
1839 }
1840
1841 module_init(usbvision_init);
1842 module_exit(usbvision_exit);
1843
1844 /*
1845  * Overrides for Emacs so that we follow Linus's tabbing style.
1846  * ---------------------------------------------------------------------------
1847  * Local variables:
1848  * c-basic-offset: 8
1849  * End:
1850  */