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

   1 /*
   2  * USB USBVISION Video device driver 0.9.9
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/version.h>
  49 #include <linux/kernel.h>
  50 #include <linux/list.h>
  51 #include <linux/timer.h>
  52 #include <linux/slab.h>
  53 #include <linux/mm.h>
  54 #include <linux/utsname.h>
  55 #include <linux/highmem.h>
  56 #include <linux/videodev.h>
  57 #include <linux/vmalloc.h>
  58 #include <linux/module.h>
  59 #include <linux/init.h>
  60 #include <linux/spinlock.h>
  61 #include <asm/io.h>
  62 #include <linux/videodev2.h>
  63 #include <linux/video_decoder.h>
  64 #include <linux/i2c.h>
  65
  66 #include <media/saa7115.h>
  67 #include <media/v4l2-common.h>
  68 #include <media/tuner.h>
  69 #include <media/audiochip.h>
  70
  71 #include <linux/workqueue.h>
  72
  73 #ifdef CONFIG_KMOD
  74 #include <linux/kmod.h>
  75 #endif
  76
  77 #include "usbvision.h"
  78 #include "usbvision-cards.h"
  79
  80 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  81  Dwaine Garden <DwaineGarden@rogers.com>"
  82 #define DRIVER_NAME "usbvision"
  83 #define DRIVER_ALIAS "USBVision"
  84 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  85 #define DRIVER_LICENSE "GPL"
  86 #define USBVISION_DRIVER_VERSION_MAJOR 0
  87 #define USBVISION_DRIVER_VERSION_MINOR 9
  88 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 9
  89 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  90 USBVISION_DRIVER_VERSION_MINOR,\
  91 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  92 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  93  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  94  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  95
  96 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  97
  98
  99 #ifdef USBVISION_DEBUG
 100         #define PDEBUG(level, fmt, args...) \
 101                 if (video_debug & (level)) \
 102                         info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ ,\
 103                                 ## args)
 104 #else
 105         #define PDEBUG(level, fmt, args...) do {} while(0)
 106 #endif
 107
 108 #define DBG_IO          1<<1
 109 #define DBG_PROBE       1<<2
 110 #define DBG_MMAP        1<<3
 111
 112 //String operations
 113 #define rmspace(str)    while(*str==' ') str++;
 114 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 115
 116
 117 /* sequential number of usbvision device */
 118 static int usbvision_nr = 0;
 119
 120 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 121         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 122         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 123         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 124         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 125         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 126         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 127         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 128         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 129 };
 130
 131 /* Function prototypes */
 132 static void usbvision_release(struct usb_usbvision *usbvision);
 133
 134 /* Default initalization of device driver parameters */
 135 /* Set the default format for ISOC endpoint */
 136 static int isocMode = ISOC_MODE_COMPRESS;
 137 /* Set the default Debug Mode of the device driver */
 138 static int video_debug = 0;
 139 /* Set the default device to power on at startup */
 140 static int PowerOnAtOpen = 1;
 141 /* Sequential Number of Video Device */
 142 static int video_nr = -1;
 143 /* Sequential Number of Radio Device */
 144 static int radio_nr = -1;
 145 /* Sequential Number of VBI Device */
 146 static int vbi_nr = -1;
 147
 148 /* Grab parameters for the device driver */
 149
 150 /* Showing parameters under SYSFS */
 151 module_param(isocMode, int, 0444);
 152 module_param(video_debug, int, 0444);
 153 module_param(PowerOnAtOpen, int, 0444);
 154 module_param(video_nr, int, 0444);
 155 module_param(radio_nr, int, 0444);
 156 module_param(vbi_nr, int, 0444);
 157
 158 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 159 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 160 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 161 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 162 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 163 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 164
 165
 166 // Misc stuff
 167 MODULE_AUTHOR(DRIVER_AUTHOR);
 168 MODULE_DESCRIPTION(DRIVER_DESC);
 169 MODULE_LICENSE(DRIVER_LICENSE);
 170 MODULE_VERSION(USBVISION_VERSION_STRING);
 171 MODULE_ALIAS(DRIVER_ALIAS);
 172
 173
 174 /*****************************************************************************/
 175 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 176 /* Device information is located at /sys/class/video4linux/video0            */
 177 /* Device parameters information is located at /sys/module/usbvision         */
 178 /* Device USB Information is located at                                      */
 179 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 180 /*****************************************************************************/
 181
 182
 183 #define YES_NO(x) ((x) ? "Yes" : "No")
 184
 185 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 186 {
 187         struct video_device *vdev =
 188                 container_of(cd, struct video_device, class_dev);
 189         return video_get_drvdata(vdev);
 190 }
 191
 192 static ssize_t show_version(struct device *cd,
 193                             struct device_attribute *attr, char *buf)
 194 {
 195         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 196 }
 197 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 198
 199 static ssize_t show_model(struct device *cd,
 200                           struct device_attribute *attr, char *buf)
 201 {
 202         struct video_device *vdev =
 203                 container_of(cd, struct video_device, class_dev);
 204         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 205         return sprintf(buf, "%s\n",
 206                        usbvision_device_data[usbvision->DevModel].ModelString);
 207 }
 208 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 209
 210 static ssize_t show_hue(struct device *cd,
 211                         struct device_attribute *attr, char *buf)
 212 {
 213         struct video_device *vdev =
 214                 container_of(cd, struct video_device, class_dev);
 215         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 216         struct v4l2_control ctrl;
 217         ctrl.id = V4L2_CID_HUE;
 218         ctrl.value = 0;
 219         if(usbvision->user)
 220                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 221         return sprintf(buf, "%d\n", ctrl.value);
 222 }
 223 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 224
 225 static ssize_t show_contrast(struct device *cd,
 226                              struct device_attribute *attr, char *buf)
 227 {
 228         struct video_device *vdev =
 229                 container_of(cd, struct video_device, class_dev);
 230         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 231         struct v4l2_control ctrl;
 232         ctrl.id = V4L2_CID_CONTRAST;
 233         ctrl.value = 0;
 234         if(usbvision->user)
 235                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 236         return sprintf(buf, "%d\n", ctrl.value);
 237 }
 238 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 239
 240 static ssize_t show_brightness(struct device *cd,
 241                                struct device_attribute *attr, char *buf)
 242 {
 243         struct video_device *vdev =
 244                 container_of(cd, struct video_device, class_dev);
 245         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 246         struct v4l2_control ctrl;
 247         ctrl.id = V4L2_CID_BRIGHTNESS;
 248         ctrl.value = 0;
 249         if(usbvision->user)
 250                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 251         return sprintf(buf, "%d\n", ctrl.value);
 252 }
 253 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 254
 255 static ssize_t show_saturation(struct device *cd,
 256                                struct device_attribute *attr, char *buf)
 257 {
 258         struct video_device *vdev =
 259                 container_of(cd, struct video_device, class_dev);
 260         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 261         struct v4l2_control ctrl;
 262         ctrl.id = V4L2_CID_SATURATION;
 263         ctrl.value = 0;
 264         if(usbvision->user)
 265                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 266         return sprintf(buf, "%d\n", ctrl.value);
 267 }
 268 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 269
 270 static ssize_t show_streaming(struct device *cd,
 271                               struct device_attribute *attr, char *buf)
 272 {
 273         struct video_device *vdev =
 274                 container_of(cd, struct video_device, class_dev);
 275         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 276         return sprintf(buf, "%s\n",
 277                        YES_NO(usbvision->streaming==Stream_On?1:0));
 278 }
 279 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 280
 281 static ssize_t show_compression(struct device *cd,
 282                                 struct device_attribute *attr, char *buf)
 283 {
 284         struct video_device *vdev =
 285                 container_of(cd, struct video_device, class_dev);
 286         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 287         return sprintf(buf, "%s\n",
 288                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 289 }
 290 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 291
 292 static ssize_t show_device_bridge(struct device *cd,
 293                                   struct device_attribute *attr, char *buf)
 294 {
 295         struct video_device *vdev =
 296                 container_of(cd, struct video_device, class_dev);
 297         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 298         return sprintf(buf, "%d\n", usbvision->bridgeType);
 299 }
 300 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 301
 302 static void usbvision_create_sysfs(struct video_device *vdev)
 303 {
 304         int res;
 305         if (!vdev)
 306                 return;
 307         do {
 308                 res = device_create_file(&vdev->class_dev,
 309                                          &dev_attr_version);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->class_dev,
 313                                          &dev_attr_model);
 314                 if (res<0)
 315                         break;
 316                 res = device_create_file(&vdev->class_dev,
 317                                          &dev_attr_hue);
 318                 if (res<0)
 319                         break;
 320                 res = device_create_file(&vdev->class_dev,
 321                                          &dev_attr_contrast);
 322                 if (res<0)
 323                         break;
 324                 res = device_create_file(&vdev->class_dev,
 325                                          &dev_attr_brightness);
 326                 if (res<0)
 327                         break;
 328                 res = device_create_file(&vdev->class_dev,
 329                                          &dev_attr_saturation);
 330                 if (res<0)
 331                         break;
 332                 res = device_create_file(&vdev->class_dev,
 333                                          &dev_attr_streaming);
 334                 if (res<0)
 335                         break;
 336                 res = device_create_file(&vdev->class_dev,
 337                                          &dev_attr_compression);
 338                 if (res<0)
 339                         break;
 340                 res = device_create_file(&vdev->class_dev,
 341                                          &dev_attr_bridge);
 342                 if (res>=0)
 343                         return;
 344         } while (0);
 345
 346         err("%s error: %d\n", __FUNCTION__, res);
 347 }
 348
 349 static void usbvision_remove_sysfs(struct video_device *vdev)
 350 {
 351         if (vdev) {
 352                 device_remove_file(&vdev->class_dev,
 353                                          &dev_attr_version);
 354                 device_remove_file(&vdev->class_dev,
 355                                          &dev_attr_model);
 356                 device_remove_file(&vdev->class_dev,
 357                                          &dev_attr_hue);
 358                 device_remove_file(&vdev->class_dev,
 359                                          &dev_attr_contrast);
 360                 device_remove_file(&vdev->class_dev,
 361                                          &dev_attr_brightness);
 362                 device_remove_file(&vdev->class_dev,
 363                                          &dev_attr_saturation);
 364                 device_remove_file(&vdev->class_dev,
 365                                          &dev_attr_streaming);
 366                 device_remove_file(&vdev->class_dev,
 367                                          &dev_attr_compression);
 368                 device_remove_file(&vdev->class_dev,
 369                                          &dev_attr_bridge);
 370         }
 371 }
 372
 373
 374 /*
 375  * usbvision_open()
 376  *
 377  * This is part of Video 4 Linux API. The driver can be opened by one
 378  * client only (checks internal counter 'usbvision->user'). The procedure
 379  * then allocates buffers needed for video processing.
 380  *
 381  */
 382 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 383 {
 384         struct video_device *dev = video_devdata(file);
 385         struct usb_usbvision *usbvision =
 386                 (struct usb_usbvision *) video_get_drvdata(dev);
 387         int errCode = 0;
 388
 389         PDEBUG(DBG_IO, "open");
 390
 391
 392         usbvision_reset_powerOffTimer(usbvision);
 393
 394         if (usbvision->user)
 395                 errCode = -EBUSY;
 396         else {
 397                 /* Allocate memory for the scratch ring buffer */
 398                 errCode = usbvision_scratch_alloc(usbvision);
 399                 if (isocMode==ISOC_MODE_COMPRESS) {
 400                         /* Allocate intermediate decompression buffers
 401                            only if needed */
 402                         errCode = usbvision_decompress_alloc(usbvision);
 403                 }
 404                 if (errCode) {
 405                         /* Deallocate all buffers if trouble */
 406                         usbvision_scratch_free(usbvision);
 407                         usbvision_decompress_free(usbvision);
 408                 }
 409         }
 410
 411         /* If so far no errors then we shall start the camera */
 412         if (!errCode) {
 413                 down(&usbvision->lock);
 414                 if (usbvision->power == 0) {
 415                         usbvision_power_on(usbvision);
 416                         usbvision_i2c_register(usbvision);
 417                 }
 418
 419                 /* Send init sequence only once, it's large! */
 420                 if (!usbvision->initialized) {
 421                         int setup_ok = 0;
 422                         setup_ok = usbvision_setup(usbvision,isocMode);
 423                         if (setup_ok)
 424                                 usbvision->initialized = 1;
 425                         else
 426                                 errCode = -EBUSY;
 427                 }
 428
 429                 if (!errCode) {
 430                         usbvision_begin_streaming(usbvision);
 431                         errCode = usbvision_init_isoc(usbvision);
 432                         /* device must be initialized before isoc transfer */
 433                         usbvision_muxsel(usbvision,0);
 434                         usbvision->user++;
 435                 } else {
 436                         if (PowerOnAtOpen) {
 437                                 usbvision_i2c_unregister(usbvision);
 438                                 usbvision_power_off(usbvision);
 439                                 usbvision->initialized = 0;
 440                         }
 441                 }
 442                 up(&usbvision->lock);
 443         }
 444
 445         if (errCode) {
 446         }
 447
 448         /* prepare queues */
 449         usbvision_empty_framequeues(usbvision);
 450
 451         PDEBUG(DBG_IO, "success");
 452         return errCode;
 453 }
 454
 455 /*
 456  * usbvision_v4l2_close()
 457  *
 458  * This is part of Video 4 Linux API. The procedure
 459  * stops streaming and deallocates all buffers that were earlier
 460  * allocated in usbvision_v4l2_open().
 461  *
 462  */
 463 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 464 {
 465         struct video_device *dev = video_devdata(file);
 466         struct usb_usbvision *usbvision =
 467                 (struct usb_usbvision *) video_get_drvdata(dev);
 468
 469         PDEBUG(DBG_IO, "close");
 470         down(&usbvision->lock);
 471
 472         usbvision_audio_off(usbvision);
 473         usbvision_restart_isoc(usbvision);
 474         usbvision_stop_isoc(usbvision);
 475
 476         usbvision_decompress_free(usbvision);
 477         usbvision_frames_free(usbvision);
 478         usbvision_empty_framequeues(usbvision);
 479         usbvision_scratch_free(usbvision);
 480
 481         usbvision->user--;
 482
 483         if (PowerOnAtOpen) {
 484                 /* power off in a little while
 485                    to avoid off/on every close/open short sequences */
 486                 usbvision_set_powerOffTimer(usbvision);
 487                 usbvision->initialized = 0;
 488         }
 489
 490         up(&usbvision->lock);
 491
 492         if (usbvision->remove_pending) {
 493                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 494                 usbvision_release(usbvision);
 495         }
 496
 497         PDEBUG(DBG_IO, "success");
 498
 499
 500         return 0;
 501 }
 502
 503
 504 /*
 505  * usbvision_ioctl()
 506  *
 507  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 508  *
 509  */
 510 #ifdef CONFIG_VIDEO_ADV_DEBUG
 511 static int vidioc_g_register (struct file *file, void *priv,
 512                                 struct v4l2_register *reg)
 513 {
 514         struct video_device *dev = video_devdata(file);
 515         struct usb_usbvision *usbvision =
 516                 (struct usb_usbvision *) video_get_drvdata(dev);
 517         int errCode;
 518
 519         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 520                 return -EINVAL;
 521         /* NT100x has a 8-bit register space */
 522         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 523         if (errCode < 0) {
 524                 err("%s: VIDIOC_DBG_G_REGISTER failed: error %d",
 525                     __FUNCTION__, errCode);
 526                 return errCode;
 527         }
 528         reg->val = errCode;
 529         return 0;
 530 }
 531
 532 static int vidioc_s_register (struct file *file, void *priv,
 533                                 struct v4l2_register *reg)
 534 {
 535         struct video_device *dev = video_devdata(file);
 536         struct usb_usbvision *usbvision =
 537                 (struct usb_usbvision *) video_get_drvdata(dev);
 538         int errCode;
 539
 540         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 541                 return -EINVAL;
 542         /* NT100x has a 8-bit register space */
 543         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 544         if (errCode < 0) {
 545                 err("%s: VIDIOC_DBG_S_REGISTER failed: error %d",
 546                     __FUNCTION__, errCode);
 547                 return errCode;
 548         }
 549         return 0;
 550 }
 551 #endif
 552
 553 static int vidioc_querycap (struct file *file, void  *priv,
 554                                         struct v4l2_capability *vc)
 555 {
 556         struct video_device *dev = video_devdata(file);
 557         struct usb_usbvision *usbvision =
 558                 (struct usb_usbvision *) video_get_drvdata(dev);
 559
 560         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 561         strlcpy(vc->card,
 562                 usbvision_device_data[usbvision->DevModel].ModelString,
 563                 sizeof(vc->card));
 564         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 565                 sizeof(vc->bus_info));
 566         vc->version = USBVISION_DRIVER_VERSION;
 567         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 568                 V4L2_CAP_AUDIO |
 569                 V4L2_CAP_READWRITE |
 570                 V4L2_CAP_STREAMING |
 571                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 572         return 0;
 573 }
 574
 575 static int vidioc_enum_input (struct file *file, void *priv,
 576                                 struct v4l2_input *vi)
 577 {
 578         struct video_device *dev = video_devdata(file);
 579         struct usb_usbvision *usbvision =
 580                 (struct usb_usbvision *) video_get_drvdata(dev);
 581         int chan;
 582
 583         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 584                 return -EINVAL;
 585         if (usbvision->have_tuner) {
 586                 chan = vi->index;
 587         } else {
 588                 chan = vi->index + 1; /*skip Television string*/
 589         }
 590         /* Determine the requested input characteristics
 591            specific for each usbvision card model */
 592         switch(chan) {
 593         case 0:
 594                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 595                         strcpy(vi->name, "White Video Input");
 596                 } else {
 597                         strcpy(vi->name, "Television");
 598                         vi->type = V4L2_INPUT_TYPE_TUNER;
 599                         vi->audioset = 1;
 600                         vi->tuner = chan;
 601                         vi->std = USBVISION_NORMS;
 602                 }
 603                 break;
 604         case 1:
 605                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 606                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 607                         strcpy(vi->name, "Green Video Input");
 608                 } else {
 609                         strcpy(vi->name, "Composite Video Input");
 610                 }
 611                 vi->std = V4L2_STD_PAL;
 612                 break;
 613         case 2:
 614                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 615                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 616                         strcpy(vi->name, "Yellow Video Input");
 617                 } else {
 618                         strcpy(vi->name, "S-Video Input");
 619                 }
 620                 vi->std = V4L2_STD_PAL;
 621                 break;
 622         case 3:
 623                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 624                 strcpy(vi->name, "Red Video Input");
 625                 vi->std = V4L2_STD_PAL;
 626                 break;
 627         }
 628         return 0;
 629 }
 630
 631 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 632 {
 633         struct video_device *dev = video_devdata(file);
 634         struct usb_usbvision *usbvision =
 635                 (struct usb_usbvision *) video_get_drvdata(dev);
 636
 637         *input = usbvision->ctl_input;
 638         return 0;
 639 }
 640
 641 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 642 {
 643         struct video_device *dev = video_devdata(file);
 644         struct usb_usbvision *usbvision =
 645                 (struct usb_usbvision *) video_get_drvdata(dev);
 646
 647         if ((input >= usbvision->video_inputs) || (input < 0) )
 648                 return -EINVAL;
 649
 650         down(&usbvision->lock);
 651         usbvision_muxsel(usbvision, input);
 652         usbvision_set_input(usbvision);
 653         usbvision_set_output(usbvision,
 654                              usbvision->curwidth,
 655                              usbvision->curheight);
 656         up(&usbvision->lock);
 657         return 0;
 658 }
 659
 660 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 661 {
 662         struct video_device *dev = video_devdata(file);
 663         struct usb_usbvision *usbvision =
 664                 (struct usb_usbvision *) video_get_drvdata(dev);
 665         usbvision->tvnormId=*id;
 666
 667         down(&usbvision->lock);
 668         call_i2c_clients(usbvision, VIDIOC_S_STD,
 669                          &usbvision->tvnormId);
 670         up(&usbvision->lock);
 671         /* propagate the change to the decoder */
 672         usbvision_muxsel(usbvision, usbvision->ctl_input);
 673
 674         return 0;
 675 }
 676
 677 static int vidioc_g_tuner (struct file *file, void *priv,
 678                                 struct v4l2_tuner *vt)
 679 {
 680         struct video_device *dev = video_devdata(file);
 681         struct usb_usbvision *usbvision =
 682                 (struct usb_usbvision *) video_get_drvdata(dev);
 683
 684         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 685                 return -EINVAL;
 686         if(usbvision->radio) {
 687                 strcpy(vt->name, "Radio");
 688                 vt->type = V4L2_TUNER_RADIO;
 689         } else {
 690                 strcpy(vt->name, "Television");
 691         }
 692         /* Let clients fill in the remainder of this struct */
 693         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 694
 695         return 0;
 696 }
 697
 698 static int vidioc_s_tuner (struct file *file, void *priv,
 699                                 struct v4l2_tuner *vt)
 700 {
 701         struct video_device *dev = video_devdata(file);
 702         struct usb_usbvision *usbvision =
 703                 (struct usb_usbvision *) video_get_drvdata(dev);
 704
 705         // Only no or one tuner for now
 706         if (!usbvision->have_tuner || vt->index)
 707                 return -EINVAL;
 708         /* let clients handle this */
 709         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 710
 711         return 0;
 712 }
 713
 714 static int vidioc_g_frequency (struct file *file, void *priv,
 715                                 struct v4l2_frequency *freq)
 716 {
 717         struct video_device *dev = video_devdata(file);
 718         struct usb_usbvision *usbvision =
 719                 (struct usb_usbvision *) video_get_drvdata(dev);
 720
 721         freq->tuner = 0; // Only one tuner
 722         if(usbvision->radio) {
 723                 freq->type = V4L2_TUNER_RADIO;
 724         } else {
 725                 freq->type = V4L2_TUNER_ANALOG_TV;
 726         }
 727         freq->frequency = usbvision->freq;
 728
 729         return 0;
 730 }
 731
 732 static int vidioc_s_frequency (struct file *file, void *priv,
 733                                 struct v4l2_frequency *freq)
 734 {
 735         struct video_device *dev = video_devdata(file);
 736         struct usb_usbvision *usbvision =
 737                 (struct usb_usbvision *) video_get_drvdata(dev);
 738
 739         // Only no or one tuner for now
 740         if (!usbvision->have_tuner || freq->tuner)
 741                 return -EINVAL;
 742
 743         usbvision->freq = freq->frequency;
 744         call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, freq);
 745
 746         return 0;
 747 }
 748
 749 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 750 {
 751         struct video_device *dev = video_devdata(file);
 752         struct usb_usbvision *usbvision =
 753                 (struct usb_usbvision *) video_get_drvdata(dev);
 754
 755         memset(a,0,sizeof(*a));
 756         if(usbvision->radio) {
 757                 strcpy(a->name,"Radio");
 758         } else {
 759                 strcpy(a->name, "TV");
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int vidioc_s_audio (struct file *file, void *fh,
 766                           struct v4l2_audio *a)
 767 {
 768         if(a->index) {
 769                 return -EINVAL;
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int vidioc_queryctrl (struct file *file, void *priv,
 776                             struct v4l2_queryctrl *ctrl)
 777 {
 778         struct video_device *dev = video_devdata(file);
 779         struct usb_usbvision *usbvision =
 780                 (struct usb_usbvision *) video_get_drvdata(dev);
 781         int id=ctrl->id;
 782
 783         memset(ctrl,0,sizeof(*ctrl));
 784         ctrl->id=id;
 785
 786         call_i2c_clients(usbvision, VIDIOC_QUERYCTRL, ctrl);
 787
 788         if (!ctrl->type)
 789                 return -EINVAL;
 790
 791         return 0;
 792 }
 793
 794 static int vidioc_g_ctrl (struct file *file, void *priv,
 795                                 struct v4l2_control *ctrl)
 796 {
 797         struct video_device *dev = video_devdata(file);
 798         struct usb_usbvision *usbvision =
 799                 (struct usb_usbvision *) video_get_drvdata(dev);
 800         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 801
 802         return 0;
 803 }
 804
 805 static int vidioc_s_ctrl (struct file *file, void *priv,
 806                                 struct v4l2_control *ctrl)
 807 {
 808         struct video_device *dev = video_devdata(file);
 809         struct usb_usbvision *usbvision =
 810                 (struct usb_usbvision *) video_get_drvdata(dev);
 811         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 812
 813         return 0;
 814 }
 815
 816 static int vidioc_reqbufs (struct file *file,
 817                            void *priv, struct v4l2_requestbuffers *vr)
 818 {
 819         struct video_device *dev = video_devdata(file);
 820         struct usb_usbvision *usbvision =
 821                 (struct usb_usbvision *) video_get_drvdata(dev);
 822         int ret;
 823
 824         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 825
 826         /* Check input validity:
 827            the user must do a VIDEO CAPTURE and MMAP method. */
 828         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 829            (vr->memory != V4L2_MEMORY_MMAP))
 830                 return -EINVAL;
 831
 832         if(usbvision->streaming == Stream_On) {
 833                 if ((ret = usbvision_stream_interrupt(usbvision)))
 834                         return ret;
 835         }
 836
 837         usbvision_frames_free(usbvision);
 838         usbvision_empty_framequeues(usbvision);
 839         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 840
 841         usbvision->curFrame = NULL;
 842
 843         return 0;
 844 }
 845
 846 static int vidioc_querybuf (struct file *file,
 847                             void *priv, struct v4l2_buffer *vb)
 848 {
 849         struct video_device *dev = video_devdata(file);
 850         struct usb_usbvision *usbvision =
 851                 (struct usb_usbvision *) video_get_drvdata(dev);
 852         struct usbvision_frame *frame;
 853
 854         /* FIXME : must control
 855            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 856         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 857                 return -EINVAL;
 858         }
 859         if(vb->index>=usbvision->num_frames)  {
 860                 return -EINVAL;
 861         }
 862         /* Updating the corresponding frame state */
 863         vb->flags = 0;
 864         frame = &usbvision->frame[vb->index];
 865         if(frame->grabstate >= FrameState_Ready)
 866                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 867         if(frame->grabstate >= FrameState_Done)
 868                 vb->flags |= V4L2_BUF_FLAG_DONE;
 869         if(frame->grabstate == FrameState_Unused)
 870                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 871         vb->memory = V4L2_MEMORY_MMAP;
 872
 873         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 874
 875         vb->memory = V4L2_MEMORY_MMAP;
 876         vb->field = V4L2_FIELD_NONE;
 877         vb->length = usbvision->curwidth*
 878                 usbvision->curheight*
 879                 usbvision->palette.bytes_per_pixel;
 880         vb->timestamp = usbvision->frame[vb->index].timestamp;
 881         vb->sequence = usbvision->frame[vb->index].sequence;
 882         return 0;
 883 }
 884
 885 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 886 {
 887         struct video_device *dev = video_devdata(file);
 888         struct usb_usbvision *usbvision =
 889                 (struct usb_usbvision *) video_get_drvdata(dev);
 890         struct usbvision_frame *frame;
 891         unsigned long lock_flags;
 892
 893         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 894         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 895                 return -EINVAL;
 896         }
 897         if(vb->index>=usbvision->num_frames)  {
 898                 return -EINVAL;
 899         }
 900
 901         frame = &usbvision->frame[vb->index];
 902
 903         if (frame->grabstate != FrameState_Unused) {
 904                 return -EAGAIN;
 905         }
 906
 907         /* Mark it as ready and enqueue frame */
 908         frame->grabstate = FrameState_Ready;
 909         frame->scanstate = ScanState_Scanning;
 910         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 911
 912         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 913
 914         /* set v4l2_format index */
 915         frame->v4l2_format = usbvision->palette;
 916
 917         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 918         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 919         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 920
 921         return 0;
 922 }
 923
 924 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 925 {
 926         struct video_device *dev = video_devdata(file);
 927         struct usb_usbvision *usbvision =
 928                 (struct usb_usbvision *) video_get_drvdata(dev);
 929         int ret;
 930         struct usbvision_frame *f;
 931         unsigned long lock_flags;
 932
 933         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 934                 return -EINVAL;
 935
 936         if (list_empty(&(usbvision->outqueue))) {
 937                 if (usbvision->streaming == Stream_Idle)
 938                         return -EINVAL;
 939                 ret = wait_event_interruptible
 940                         (usbvision->wait_frame,
 941                          !list_empty(&(usbvision->outqueue)));
 942                 if (ret)
 943                         return ret;
 944         }
 945
 946         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 947         f = list_entry(usbvision->outqueue.next,
 948                        struct usbvision_frame, frame);
 949         list_del(usbvision->outqueue.next);
 950         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 951
 952         f->grabstate = FrameState_Unused;
 953
 954         vb->memory = V4L2_MEMORY_MMAP;
 955         vb->flags = V4L2_BUF_FLAG_MAPPED |
 956                 V4L2_BUF_FLAG_QUEUED |
 957                 V4L2_BUF_FLAG_DONE;
 958         vb->index = f->index;
 959         vb->sequence = f->sequence;
 960         vb->timestamp = f->timestamp;
 961         vb->field = V4L2_FIELD_NONE;
 962         vb->bytesused = f->scanlength;
 963
 964         return 0;
 965 }
 966
 967 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 968 {
 969         struct video_device *dev = video_devdata(file);
 970         struct usb_usbvision *usbvision =
 971                 (struct usb_usbvision *) video_get_drvdata(dev);
 972         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 973
 974         usbvision->streaming = Stream_On;
 975         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 976
 977         return 0;
 978 }
 979
 980 static int vidioc_streamoff(struct file *file,
 981                             void *priv, enum v4l2_buf_type type)
 982 {
 983         struct video_device *dev = video_devdata(file);
 984         struct usb_usbvision *usbvision =
 985                 (struct usb_usbvision *) video_get_drvdata(dev);
 986         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 987
 988         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 989                 return -EINVAL;
 990
 991         if(usbvision->streaming == Stream_On) {
 992                 usbvision_stream_interrupt(usbvision);
 993                 /* Stop all video streamings */
 994                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 995         }
 996         usbvision_empty_framequeues(usbvision);
 997
 998         return 0;
 999 }
1000
1001 static int vidioc_enum_fmt_cap (struct file *file, void  *priv,
1002                                         struct v4l2_fmtdesc *vfd)
1003 {
1004         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
1005                 return -EINVAL;
1006         }
1007         vfd->flags = 0;
1008         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1009         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
1010         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
1011         memset(vfd->reserved, 0, sizeof(vfd->reserved));
1012         return 0;
1013 }
1014
1015 static int vidioc_g_fmt_cap (struct file *file, void *priv,
1016                                         struct v4l2_format *vf)
1017 {
1018         struct video_device *dev = video_devdata(file);
1019         struct usb_usbvision *usbvision =
1020                 (struct usb_usbvision *) video_get_drvdata(dev);
1021         vf->fmt.pix.width = usbvision->curwidth;
1022         vf->fmt.pix.height = usbvision->curheight;
1023         vf->fmt.pix.pixelformat = usbvision->palette.format;
1024         vf->fmt.pix.bytesperline =
1025                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
1026         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
1027         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
1028         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
1029
1030         return 0;
1031 }
1032
1033 static int vidioc_try_fmt_cap (struct file *file, void *priv,
1034                                struct v4l2_format *vf)
1035 {
1036         struct video_device *dev = video_devdata(file);
1037         struct usb_usbvision *usbvision =
1038                 (struct usb_usbvision *) video_get_drvdata(dev);
1039         int formatIdx;
1040
1041         /* Find requested format in available ones */
1042         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1043                 if(vf->fmt.pix.pixelformat ==
1044                    usbvision_v4l2_format[formatIdx].format) {
1045                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1046                         break;
1047                 }
1048         }
1049         /* robustness */
1050         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1051                 return -EINVAL;
1052         }
1053         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1054         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1055
1056         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
1057                 usbvision->palette.bytes_per_pixel;
1058         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1059
1060         return 0;
1061 }
1062
1063 static int vidioc_s_fmt_cap(struct file *file, void *priv,
1064                                struct v4l2_format *vf)
1065 {
1066         struct video_device *dev = video_devdata(file);
1067         struct usb_usbvision *usbvision =
1068                 (struct usb_usbvision *) video_get_drvdata(dev);
1069         int ret;
1070
1071         if( 0 != (ret=vidioc_try_fmt_cap (file, priv, vf)) ) {
1072                 return ret;
1073         }
1074
1075         /* stop io in case it is already in progress */
1076         if(usbvision->streaming == Stream_On) {
1077                 if ((ret = usbvision_stream_interrupt(usbvision)))
1078                         return ret;
1079         }
1080         usbvision_frames_free(usbvision);
1081         usbvision_empty_framequeues(usbvision);
1082
1083         usbvision->curFrame = NULL;
1084
1085         /* by now we are committed to the new data... */
1086         down(&usbvision->lock);
1087         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1088         up(&usbvision->lock);
1089
1090         return 0;
1091 }
1092
1093 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1094                       size_t count, loff_t *ppos)
1095 {
1096         struct video_device *dev = video_devdata(file);
1097         struct usb_usbvision *usbvision =
1098                 (struct usb_usbvision *) video_get_drvdata(dev);
1099         int noblock = file->f_flags & O_NONBLOCK;
1100         unsigned long lock_flags;
1101
1102         int ret,i;
1103         struct usbvision_frame *frame;
1104
1105         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__,
1106                (unsigned long)count, noblock);
1107
1108         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1109                 return -EFAULT;
1110
1111         /* This entry point is compatible with the mmap routines
1112            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1113            to get frames or call read on the device. */
1114         if(!usbvision->num_frames) {
1115                 /* First, allocate some frames to work with
1116                    if this has not been done with VIDIOC_REQBUF */
1117                 usbvision_frames_free(usbvision);
1118                 usbvision_empty_framequeues(usbvision);
1119                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1120         }
1121
1122         if(usbvision->streaming != Stream_On) {
1123                 /* no stream is running, make it running ! */
1124                 usbvision->streaming = Stream_On;
1125                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1126         }
1127
1128         /* Then, enqueue as many frames as possible
1129            (like a user of VIDIOC_QBUF would do) */
1130         for(i=0;i<usbvision->num_frames;i++) {
1131                 frame = &usbvision->frame[i];
1132                 if(frame->grabstate == FrameState_Unused) {
1133                         /* Mark it as ready and enqueue frame */
1134                         frame->grabstate = FrameState_Ready;
1135                         frame->scanstate = ScanState_Scanning;
1136                         /* Accumulated in usbvision_parse_data() */
1137                         frame->scanlength = 0;
1138
1139                         /* set v4l2_format index */
1140                         frame->v4l2_format = usbvision->palette;
1141
1142                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1143                         list_add_tail(&frame->frame, &usbvision->inqueue);
1144                         spin_unlock_irqrestore(&usbvision->queue_lock,
1145                                                lock_flags);
1146                 }
1147         }
1148
1149         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1150         if (list_empty(&(usbvision->outqueue))) {
1151                 if(noblock)
1152                         return -EAGAIN;
1153
1154                 ret = wait_event_interruptible
1155                         (usbvision->wait_frame,
1156                          !list_empty(&(usbvision->outqueue)));
1157                 if (ret)
1158                         return ret;
1159         }
1160
1161         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1162         frame = list_entry(usbvision->outqueue.next,
1163                            struct usbvision_frame, frame);
1164         list_del(usbvision->outqueue.next);
1165         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1166
1167         /* An error returns an empty frame */
1168         if (frame->grabstate == FrameState_Error) {
1169                 frame->bytes_read = 0;
1170                 return 0;
1171         }
1172
1173         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1174                __FUNCTION__,
1175                frame->index, frame->bytes_read, frame->scanlength);
1176
1177         /* copy bytes to user space; we allow for partials reads */
1178         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1179                 count = frame->scanlength - frame->bytes_read;
1180
1181         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1182                 return -EFAULT;
1183         }
1184
1185         frame->bytes_read += count;
1186         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1187                __FUNCTION__,
1188                (unsigned long)count, frame->bytes_read);
1189
1190         /* For now, forget the frame if it has not been read in one shot. */
1191 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1192                 frame->bytes_read = 0;
1193
1194                 /* Mark it as available to be used again. */
1195                 frame->grabstate = FrameState_Unused;
1196 /*      } */
1197
1198         return count;
1199 }
1200
1201 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1202 {
1203         unsigned long size = vma->vm_end - vma->vm_start,
1204                 start = vma->vm_start;
1205         void *pos;
1206         u32 i;
1207
1208         struct video_device *dev = video_devdata(file);
1209         struct usb_usbvision *usbvision =
1210                 (struct usb_usbvision *) video_get_drvdata(dev);
1211
1212         PDEBUG(DBG_MMAP, "mmap");
1213
1214         down(&usbvision->lock);
1215
1216         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1217                 up(&usbvision->lock);
1218                 return -EFAULT;
1219         }
1220
1221         if (!(vma->vm_flags & VM_WRITE) ||
1222             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1223                 up(&usbvision->lock);
1224                 return -EINVAL;
1225         }
1226
1227         for (i = 0; i < usbvision->num_frames; i++) {
1228                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1229                     vma->vm_pgoff)
1230                         break;
1231         }
1232         if (i == usbvision->num_frames) {
1233                 PDEBUG(DBG_MMAP,
1234                        "mmap: user supplied mapping address is out of range");
1235                 up(&usbvision->lock);
1236                 return -EINVAL;
1237         }
1238
1239         /* VM_IO is eventually going to replace PageReserved altogether */
1240         vma->vm_flags |= VM_IO;
1241         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1242
1243         pos = usbvision->frame[i].data;
1244         while (size > 0) {
1245
1246                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1247                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1248                         up(&usbvision->lock);
1249                         return -EAGAIN;
1250                 }
1251                 start += PAGE_SIZE;
1252                 pos += PAGE_SIZE;
1253                 size -= PAGE_SIZE;
1254         }
1255
1256         up(&usbvision->lock);
1257         return 0;
1258 }
1259
1260
1261 /*
1262  * Here comes the stuff for radio on usbvision based devices
1263  *
1264  */
1265 static int usbvision_radio_open(struct inode *inode, struct file *file)
1266 {
1267         struct video_device *dev = video_devdata(file);
1268         struct usb_usbvision *usbvision =
1269                 (struct usb_usbvision *) video_get_drvdata(dev);
1270         int errCode = 0;
1271
1272         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1273
1274         down(&usbvision->lock);
1275
1276         if (usbvision->user) {
1277                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1278                 errCode = -EBUSY;
1279         }
1280         else {
1281                 if(PowerOnAtOpen) {
1282                         usbvision_reset_powerOffTimer(usbvision);
1283                         if (usbvision->power == 0) {
1284                                 usbvision_power_on(usbvision);
1285                                 usbvision_i2c_register(usbvision);
1286                         }
1287                 }
1288
1289                 /* Alternate interface 1 is is the biggest frame size */
1290                 errCode = usbvision_set_alternate(usbvision);
1291                 if (errCode < 0) {
1292                         usbvision->last_error = errCode;
1293                         return -EBUSY;
1294                 }
1295
1296                 // If so far no errors then we shall start the radio
1297                 usbvision->radio = 1;
1298                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1299                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1300                 usbvision->user++;
1301         }
1302
1303         if (errCode) {
1304                 if (PowerOnAtOpen) {
1305                         usbvision_i2c_unregister(usbvision);
1306                         usbvision_power_off(usbvision);
1307                         usbvision->initialized = 0;
1308                 }
1309         }
1310         up(&usbvision->lock);
1311         return errCode;
1312 }
1313
1314
1315 static int usbvision_radio_close(struct inode *inode, struct file *file)
1316 {
1317         struct video_device *dev = video_devdata(file);
1318         struct usb_usbvision *usbvision =
1319                 (struct usb_usbvision *) video_get_drvdata(dev);
1320         int errCode = 0;
1321
1322         PDEBUG(DBG_IO, "");
1323
1324         down(&usbvision->lock);
1325
1326         /* Set packet size to 0 */
1327         usbvision->ifaceAlt=0;
1328         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1329                                     usbvision->ifaceAlt);
1330
1331         usbvision_audio_off(usbvision);
1332         usbvision->radio=0;
1333         usbvision->user--;
1334
1335         if (PowerOnAtOpen) {
1336                 usbvision_set_powerOffTimer(usbvision);
1337                 usbvision->initialized = 0;
1338         }
1339
1340         up(&usbvision->lock);
1341
1342         if (usbvision->remove_pending) {
1343                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1344                 usbvision_release(usbvision);
1345         }
1346
1347
1348         PDEBUG(DBG_IO, "success");
1349
1350         return errCode;
1351 }
1352
1353 /*
1354  * Here comes the stuff for vbi on usbvision based devices
1355  *
1356  */
1357 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1358 {
1359         /* TODO */
1360         return -ENODEV;
1361
1362 }
1363
1364 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1365 {
1366         /* TODO */
1367         return -ENODEV;
1368 }
1369
1370 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1371                                  unsigned int cmd, void *arg)
1372 {
1373         /* TODO */
1374         return -ENOIOCTLCMD;
1375 }
1376
1377 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1378                        unsigned int cmd, unsigned long arg)
1379 {
1380         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1381 }
1382
1383
1384 //
1385 // Video registration stuff
1386 //
1387
1388 // Video template
1389 static const struct file_operations usbvision_fops = {
1390         .owner             = THIS_MODULE,
1391         .open           = usbvision_v4l2_open,
1392         .release        = usbvision_v4l2_close,
1393         .read           = usbvision_v4l2_read,
1394         .mmap           = usbvision_v4l2_mmap,
1395         .ioctl          = video_ioctl2,
1396         .llseek         = no_llseek,
1397 /*      .poll          = video_poll, */
1398         .compat_ioctl  = v4l_compat_ioctl32,
1399 };
1400 static struct video_device usbvision_video_template = {
1401         .owner             = THIS_MODULE,
1402         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1403         .hardware       = VID_HARDWARE_USBVISION,
1404         .fops           = &usbvision_fops,
1405         .name           = "usbvision-video",
1406         .release        = video_device_release,
1407         .minor          = -1,
1408         .vidioc_querycap      = vidioc_querycap,
1409         .vidioc_enum_fmt_cap  = vidioc_enum_fmt_cap,
1410         .vidioc_g_fmt_cap     = vidioc_g_fmt_cap,
1411         .vidioc_try_fmt_cap   = vidioc_try_fmt_cap,
1412         .vidioc_s_fmt_cap     = vidioc_s_fmt_cap,
1413         .vidioc_reqbufs       = vidioc_reqbufs,
1414         .vidioc_querybuf      = vidioc_querybuf,
1415         .vidioc_qbuf          = vidioc_qbuf,
1416         .vidioc_dqbuf         = vidioc_dqbuf,
1417         .vidioc_s_std         = vidioc_s_std,
1418         .vidioc_enum_input    = vidioc_enum_input,
1419         .vidioc_g_input       = vidioc_g_input,
1420         .vidioc_s_input       = vidioc_s_input,
1421         .vidioc_queryctrl     = vidioc_queryctrl,
1422         .vidioc_g_audio       = vidioc_g_audio,
1423         .vidioc_s_audio       = vidioc_s_audio,
1424         .vidioc_g_ctrl        = vidioc_g_ctrl,
1425         .vidioc_s_ctrl        = vidioc_s_ctrl,
1426         .vidioc_streamon      = vidioc_streamon,
1427         .vidioc_streamoff     = vidioc_streamoff,
1428 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1429 /*      .vidiocgmbuf          = vidiocgmbuf, */
1430 #endif
1431         .vidioc_g_tuner       = vidioc_g_tuner,
1432         .vidioc_s_tuner       = vidioc_s_tuner,
1433         .vidioc_g_frequency   = vidioc_g_frequency,
1434         .vidioc_s_frequency   = vidioc_s_frequency,
1435 #ifdef CONFIG_VIDEO_ADV_DEBUG
1436         .vidioc_g_register    = vidioc_g_register,
1437         .vidioc_s_register    = vidioc_s_register,
1438 #endif
1439         .tvnorms              = USBVISION_NORMS,
1440         .current_norm         = V4L2_STD_PAL
1441 };
1442
1443
1444 // Radio template
1445 static const struct file_operations usbvision_radio_fops = {
1446         .owner             = THIS_MODULE,
1447         .open           = usbvision_radio_open,
1448         .release        = usbvision_radio_close,
1449         .ioctl          = video_ioctl2,
1450         .llseek         = no_llseek,
1451         .compat_ioctl  = v4l_compat_ioctl32,
1452 };
1453
1454 static struct video_device usbvision_radio_template=
1455 {
1456         .owner             = THIS_MODULE,
1457         .type           = VID_TYPE_TUNER,
1458         .hardware       = VID_HARDWARE_USBVISION,
1459         .fops           = &usbvision_radio_fops,
1460         .name           = "usbvision-radio",
1461         .release        = video_device_release,
1462         .minor          = -1,
1463         .vidioc_querycap      = vidioc_querycap,
1464         .vidioc_enum_input    = vidioc_enum_input,
1465         .vidioc_g_input       = vidioc_g_input,
1466         .vidioc_s_input       = vidioc_s_input,
1467         .vidioc_queryctrl     = vidioc_queryctrl,
1468         .vidioc_g_audio       = vidioc_g_audio,
1469         .vidioc_s_audio       = vidioc_s_audio,
1470         .vidioc_g_ctrl        = vidioc_g_ctrl,
1471         .vidioc_s_ctrl        = vidioc_s_ctrl,
1472         .vidioc_g_tuner       = vidioc_g_tuner,
1473         .vidioc_s_tuner       = vidioc_s_tuner,
1474         .vidioc_g_frequency   = vidioc_g_frequency,
1475         .vidioc_s_frequency   = vidioc_s_frequency,
1476
1477         .tvnorms              = USBVISION_NORMS,
1478         .current_norm         = V4L2_STD_PAL
1479 };
1480
1481 // vbi template
1482 static const struct file_operations usbvision_vbi_fops = {
1483         .owner             = THIS_MODULE,
1484         .open           = usbvision_vbi_open,
1485         .release        = usbvision_vbi_close,
1486         .ioctl          = usbvision_vbi_ioctl,
1487         .llseek         = no_llseek,
1488         .compat_ioctl  = v4l_compat_ioctl32,
1489 };
1490
1491 static struct video_device usbvision_vbi_template=
1492 {
1493         .owner             = THIS_MODULE,
1494         .type           = VID_TYPE_TUNER,
1495         .hardware       = VID_HARDWARE_USBVISION,
1496         .fops           = &usbvision_vbi_fops,
1497         .release        = video_device_release,
1498         .name           = "usbvision-vbi",
1499         .minor          = -1,
1500 };
1501
1502
1503 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1504                                         struct video_device *vdev_template,
1505                                         char *name)
1506 {
1507         struct usb_device *usb_dev = usbvision->dev;
1508         struct video_device *vdev;
1509
1510         if (usb_dev == NULL) {
1511                 err("%s: usbvision->dev is not set", __FUNCTION__);
1512                 return NULL;
1513         }
1514
1515         vdev = video_device_alloc();
1516         if (NULL == vdev) {
1517                 return NULL;
1518         }
1519         *vdev = *vdev_template;
1520 //      vdev->minor   = -1;
1521         vdev->dev     = &usb_dev->dev;
1522         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1523         video_set_drvdata(vdev, usbvision);
1524         return vdev;
1525 }
1526
1527 // unregister video4linux devices
1528 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1529 {
1530         // vbi Device:
1531         if (usbvision->vbi) {
1532                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1533                        usbvision->vbi->minor & 0x1f);
1534                 if (usbvision->vbi->minor != -1) {
1535                         video_unregister_device(usbvision->vbi);
1536                 } else {
1537                         video_device_release(usbvision->vbi);
1538                 }
1539                 usbvision->vbi = NULL;
1540         }
1541
1542         // Radio Device:
1543         if (usbvision->rdev) {
1544                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1545                        usbvision->rdev->minor & 0x1f);
1546                 if (usbvision->rdev->minor != -1) {
1547                         video_unregister_device(usbvision->rdev);
1548                 } else {
1549                         video_device_release(usbvision->rdev);
1550                 }
1551                 usbvision->rdev = NULL;
1552         }
1553
1554         // Video Device:
1555         if (usbvision->vdev) {
1556                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1557                        usbvision->vdev->minor & 0x1f);
1558                 if (usbvision->vdev->minor != -1) {
1559                         video_unregister_device(usbvision->vdev);
1560                 } else {
1561                         video_device_release(usbvision->vdev);
1562                 }
1563                 usbvision->vdev = NULL;
1564         }
1565 }
1566
1567 // register video4linux devices
1568 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1569 {
1570         // Video Device:
1571         usbvision->vdev = usbvision_vdev_init(usbvision,
1572                                               &usbvision_video_template,
1573                                               "USBVision Video");
1574         if (usbvision->vdev == NULL) {
1575                 goto err_exit;
1576         }
1577         if (video_register_device(usbvision->vdev,
1578                                   VFL_TYPE_GRABBER,
1579                                   video_nr)<0) {
1580                 goto err_exit;
1581         }
1582         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1583                usbvision->nr,usbvision->vdev->minor & 0x1f);
1584
1585         // Radio Device:
1586         if (usbvision_device_data[usbvision->DevModel].Radio) {
1587                 // usbvision has radio
1588                 usbvision->rdev = usbvision_vdev_init(usbvision,
1589                                                       &usbvision_radio_template,
1590                                                       "USBVision Radio");
1591                 if (usbvision->rdev == NULL) {
1592                         goto err_exit;
1593                 }
1594                 if (video_register_device(usbvision->rdev,
1595                                           VFL_TYPE_RADIO,
1596                                           radio_nr)<0) {
1597                         goto err_exit;
1598                 }
1599                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1600                        usbvision->nr, usbvision->rdev->minor & 0x1f);
1601         }
1602         // vbi Device:
1603         if (usbvision_device_data[usbvision->DevModel].vbi) {
1604                 usbvision->vbi = usbvision_vdev_init(usbvision,
1605                                                      &usbvision_vbi_template,
1606                                                      "USBVision VBI");
1607                 if (usbvision->vdev == NULL) {
1608                         goto err_exit;
1609                 }
1610                 if (video_register_device(usbvision->vbi,
1611                                           VFL_TYPE_VBI,
1612                                           vbi_nr)<0) {
1613                         goto err_exit;
1614                 }
1615                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1616                        usbvision->nr,usbvision->vbi->minor & 0x1f);
1617         }
1618         // all done
1619         return 0;
1620
1621  err_exit:
1622         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1623         usbvision_unregister_video(usbvision);
1624         return -1;
1625 }
1626
1627 /*
1628  * usbvision_alloc()
1629  *
1630  * This code allocates the struct usb_usbvision.
1631  * It is filled with default values.
1632  *
1633  * Returns NULL on error, a pointer to usb_usbvision else.
1634  *
1635  */
1636 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1637 {
1638         struct usb_usbvision *usbvision;
1639
1640         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) ==
1641             NULL) {
1642                 goto err_exit;
1643         }
1644
1645         usbvision->dev = dev;
1646
1647         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1648
1649         // prepare control urb for control messages during interrupts
1650         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1651         if (usbvision->ctrlUrb == NULL) {
1652                 goto err_exit;
1653         }
1654         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1655         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1656
1657         usbvision_init_powerOffTimer(usbvision);
1658
1659         return usbvision;
1660
1661 err_exit:
1662         if (usbvision && usbvision->ctrlUrb) {
1663                 usb_free_urb(usbvision->ctrlUrb);
1664         }
1665         if (usbvision) {
1666                 kfree(usbvision);
1667         }
1668         return NULL;
1669 }
1670
1671 /*
1672  * usbvision_release()
1673  *
1674  * This code does final release of struct usb_usbvision. This happens
1675  * after the device is disconnected -and- all clients closed their files.
1676  *
1677  */
1678 static void usbvision_release(struct usb_usbvision *usbvision)
1679 {
1680         PDEBUG(DBG_PROBE, "");
1681
1682         down(&usbvision->lock);
1683
1684         usbvision_reset_powerOffTimer(usbvision);
1685
1686         usbvision->initialized = 0;
1687
1688         up(&usbvision->lock);
1689
1690         usbvision_remove_sysfs(usbvision->vdev);
1691         usbvision_unregister_video(usbvision);
1692
1693         if (usbvision->ctrlUrb) {
1694                 usb_free_urb(usbvision->ctrlUrb);
1695         }
1696
1697         kfree(usbvision);
1698
1699         PDEBUG(DBG_PROBE, "success");
1700 }
1701
1702
1703 /*********************** usb interface **********************************/
1704
1705 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1706 {
1707         int model;
1708
1709         if (usbvision == NULL)
1710                 return;
1711
1712         model = usbvision->DevModel;
1713         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1714
1715         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1716                 usbvision->Vin_Reg2_Preset =
1717                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1718         } else {
1719                 usbvision->Vin_Reg2_Preset = 0;
1720         }
1721
1722         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1723
1724         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1725         usbvision->ctl_input = 0;
1726
1727         /* This should be here to make i2c clients to be able to register */
1728         /* first switch off audio */
1729         usbvision_audio_off(usbvision);
1730         if (!PowerOnAtOpen) {
1731                 /* and then power up the noisy tuner */
1732                 usbvision_power_on(usbvision);
1733                 usbvision_i2c_register(usbvision);
1734         }
1735 }
1736
1737 /*
1738  * usbvision_probe()
1739  *
1740  * This procedure queries device descriptor and accepts the interface
1741  * if it looks like USBVISION video device
1742  *
1743  */
1744 static int __devinit usbvision_probe(struct usb_interface *intf,
1745                                      const struct usb_device_id *devid)
1746 {
1747         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1748         struct usb_interface *uif;
1749         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1750         const struct usb_host_interface *interface;
1751         struct usb_usbvision *usbvision = NULL;
1752         const struct usb_endpoint_descriptor *endpoint;
1753         int model,i;
1754
1755         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1756                                 dev->descriptor.idVendor,
1757                                 dev->descriptor.idProduct, ifnum);
1758
1759         model = devid->driver_info;
1760         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1761                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1762                 return -ENODEV;
1763         }
1764         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1765                                 usbvision_device_data[model].ModelString);
1766
1767         if (usbvision_device_data[model].Interface >= 0) {
1768                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1769         } else {
1770                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1771         }
1772         endpoint = &interface->endpoint[1].desc;
1773         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1774             USB_ENDPOINT_XFER_ISOC) {
1775                 err("%s: interface %d. has non-ISO endpoint!",
1776                     __FUNCTION__, ifnum);
1777                 err("%s: Endpoint attributes %d",
1778                     __FUNCTION__, endpoint->bmAttributes);
1779                 return -ENODEV;
1780         }
1781         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
1782             USB_DIR_OUT) {
1783                 err("%s: interface %d. has ISO OUT endpoint!",
1784                     __FUNCTION__, ifnum);
1785                 return -ENODEV;
1786         }
1787
1788         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1789                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1790                 return -ENOMEM;
1791         }
1792
1793         if (dev->descriptor.bNumConfigurations > 1) {
1794                 usbvision->bridgeType = BRIDGE_NT1004;
1795         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1796                 usbvision->bridgeType = BRIDGE_NT1005;
1797         } else {
1798                 usbvision->bridgeType = BRIDGE_NT1003;
1799         }
1800         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1801
1802         down(&usbvision->lock);
1803
1804         /* compute alternate max packet sizes */
1805         uif = dev->actconfig->interface[0];
1806
1807         usbvision->num_alt=uif->num_altsetting;
1808         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1809         usbvision->alt_max_pkt_size = kmalloc(32*
1810                                               usbvision->num_alt,GFP_KERNEL);
1811         if (usbvision->alt_max_pkt_size == NULL) {
1812                 err("usbvision: out of memory!\n");
1813                 return -ENOMEM;
1814         }
1815
1816         for (i = 0; i < usbvision->num_alt ; i++) {
1817                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1818                                       wMaxPacketSize);
1819                 usbvision->alt_max_pkt_size[i] =
1820                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1821                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1822                        usbvision->alt_max_pkt_size[i]);
1823         }
1824
1825
1826         usbvision->nr = usbvision_nr++;
1827
1828         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1829         if (usbvision->have_tuner) {
1830                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1831         }
1832
1833         usbvision->tuner_addr = ADDR_UNSET;
1834
1835         usbvision->DevModel = model;
1836         usbvision->remove_pending = 0;
1837         usbvision->iface = ifnum;
1838         usbvision->ifaceAlt = 0;
1839         usbvision->video_endp = endpoint->bEndpointAddress;
1840         usbvision->isocPacketSize = 0;
1841         usbvision->usb_bandwidth = 0;
1842         usbvision->user = 0;
1843         usbvision->streaming = Stream_Off;
1844         usbvision_register_video(usbvision);
1845         usbvision_configure_video(usbvision);
1846         up(&usbvision->lock);
1847
1848
1849         usb_set_intfdata (intf, usbvision);
1850         usbvision_create_sysfs(usbvision->vdev);
1851
1852         PDEBUG(DBG_PROBE, "success");
1853         return 0;
1854 }
1855
1856
1857 /*
1858  * usbvision_disconnect()
1859  *
1860  * This procedure stops all driver activity, deallocates interface-private
1861  * structure (pointed by 'ptr') and after that driver should be removable
1862  * with no ill consequences.
1863  *
1864  */
1865 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1866 {
1867         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1868
1869         PDEBUG(DBG_PROBE, "");
1870
1871         if (usbvision == NULL) {
1872                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1873                 return;
1874         }
1875         usb_set_intfdata (intf, NULL);
1876
1877         down(&usbvision->lock);
1878
1879         // At this time we ask to cancel outstanding URBs
1880         usbvision_stop_isoc(usbvision);
1881
1882         if (usbvision->power) {
1883                 usbvision_i2c_unregister(usbvision);
1884                 usbvision_power_off(usbvision);
1885         }
1886         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1887
1888         usb_put_dev(usbvision->dev);
1889         usbvision->dev = NULL;  // USB device is no more
1890
1891         up(&usbvision->lock);
1892
1893         if (usbvision->user) {
1894                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1895                        __FUNCTION__);
1896                 wake_up_interruptible(&usbvision->wait_frame);
1897                 wake_up_interruptible(&usbvision->wait_stream);
1898         } else {
1899                 usbvision_release(usbvision);
1900         }
1901
1902         PDEBUG(DBG_PROBE, "success");
1903
1904 }
1905
1906 static struct usb_driver usbvision_driver = {
1907         .name           = "usbvision",
1908         .id_table       = usbvision_table,
1909         .probe          = usbvision_probe,
1910         .disconnect     = usbvision_disconnect
1911 };
1912
1913 /*
1914  * usbvision_init()
1915  *
1916  * This code is run to initialize the driver.
1917  *
1918  */
1919 static int __init usbvision_init(void)
1920 {
1921         int errCode;
1922
1923         PDEBUG(DBG_PROBE, "");
1924
1925         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1926         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1927         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1928
1929         /* disable planar mode support unless compression enabled */
1930         if (isocMode != ISOC_MODE_COMPRESS ) {
1931                 // FIXME : not the right way to set supported flag
1932                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1933                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1934         }
1935
1936         errCode = usb_register(&usbvision_driver);
1937
1938         if (errCode == 0) {
1939                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1940                 PDEBUG(DBG_PROBE, "success");
1941         }
1942         return errCode;
1943 }
1944
1945 static void __exit usbvision_exit(void)
1946 {
1947  PDEBUG(DBG_PROBE, "");
1948
1949  usb_deregister(&usbvision_driver);
1950  PDEBUG(DBG_PROBE, "success");
1951 }
1952
1953 module_init(usbvision_init);
1954 module_exit(usbvision_exit);
1955
1956 /*
1957  * Overrides for Emacs so that we follow Linus's tabbing style.
1958  * ---------------------------------------------------------------------------
1959  * Local variables:
1960  * c-basic-offset: 8
1961  * End:
1962  */