err.no Git - linux-2.6/blob - 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.  Seems impossible, needs a codec interface.  Which one?
  40  *     - Clean up the driver.
  41  *     - optimization for performance.
  42  *     - Add Videotext capability (VBI).  Working on it.....
  43  *     - Check audio for other devices
  44  *
  45  */
  46
  47 #include <linux/version.h>
  48 #include <linux/kernel.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/utsname.h>
  54 #include <linux/highmem.h>
  55 #include <linux/smp_lock.h>
  56 #include <linux/videodev.h>
  57 #include <linux/vmalloc.h>
  58 #include <linux/module.h>
  59 #include <linux/init.h>
  60 #include <linux/spinlock.h>
  61 #include <asm/io.h>
  62 #include <linux/videodev2.h>
  63 #include <linux/video_decoder.h>
  64 #include <linux/i2c.h>
  65
  66 #include <media/saa7115.h>
  67 #include <media/v4l2-common.h>
  68 #include <media/tuner.h>
  69 #include <media/audiochip.h>
  70
  71 #include <linux/moduleparam.h>
  72 #include <linux/workqueue.h>
  73
  74 #ifdef CONFIG_KMOD
  75 #include <linux/kmod.h>
  76 #endif
  77
  78 #include "usbvision.h"
  79 #include "usbvision-cards.h"
  80
  81 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, 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,USBVISION_DRIVER_VERSION_MINOR,USBVISION_DRIVER_VERSION_PATCHLEVEL)
  90 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) "." __stringify(USBVISION_DRIVER_VERSION_MINOR) "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  91
  92 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  93
  94
  95 #ifdef USBVISION_DEBUG
  96         #define PDEBUG(level, fmt, args...) \
  97                 if (video_debug & (level)) info("[%s:%d] " fmt, __PRETTY_FUNCTION__, __LINE__ , ## args)
  98 #else
  99         #define PDEBUG(level, fmt, args...) do {} while(0)
 100 #endif
 101
 102 #define DBG_IOCTL       1<<0
 103 #define DBG_IO          1<<1
 104 #define DBG_PROBE       1<<2
 105 #define DBG_MMAP        1<<3
 106
 107 //String operations
 108 #define rmspace(str)    while(*str==' ') str++;
 109 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 110
 111
 112 static int usbvision_nr = 0;                    // sequential number of usbvision device
 113
 114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 115         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 116         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 117         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 118         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 119         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 120         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 121         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 122         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 123 };
 124
 125 /* supported tv norms */
 126 static struct usbvision_tvnorm tvnorms[] = {
 127         {
 128                 .name = "PAL",
 129                 .id = V4L2_STD_PAL,
 130         }, {
 131                 .name = "NTSC",
 132                 .id = V4L2_STD_NTSC,
 133         }, {
 134                  .name = "SECAM",
 135                  .id = V4L2_STD_SECAM,
 136         }, {
 137                 .name = "PAL-M",
 138                 .id = V4L2_STD_PAL_M,
 139         }
 140 };
 141
 142 #define TVNORMS ARRAY_SIZE(tvnorms)
 143
 144 // Function prototypes
 145 static void usbvision_release(struct usb_usbvision *usbvision);
 146
 147 // Default initalization of device driver parameters
 148 static int isocMode = ISOC_MODE_COMPRESS;               // Set the default format for ISOC endpoint
 149 static int video_debug = 0;                             // Set the default Debug Mode of the device driver
 150 static int PowerOnAtOpen = 1;                           // Set the default device to power on at startup
 151 static int video_nr = -1;                               // Sequential Number of Video Device
 152 static int radio_nr = -1;                               // Sequential Number of Radio Device
 153 static int vbi_nr = -1;                                 // Sequential Number of VBI Device
 154 static char *CustomDevice=NULL;                         // Set as nothing....
 155
 156 // Grab parameters for the device driver
 157
 158 #if defined(module_param)                               // Showing parameters under SYSFS
 159 module_param(isocMode, int, 0444);
 160 module_param(video_debug, int, 0444);
 161 module_param(PowerOnAtOpen, int, 0444);
 162 module_param(video_nr, int, 0444);
 163 module_param(radio_nr, int, 0444);
 164 module_param(vbi_nr, int, 0444);
 165 module_param(CustomDevice, charp, 0444);
 166 #else                                                   // Old Style
 167 MODULE_PARAM(isocMode, "i");
 168 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 169 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 170 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 171 MODULE_PARM(SwitchSVideoInput, "i");                    // To help people with Black and White output with using s-video input.  Some cables and input device are wired differently.
 172 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 173 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 174 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 175 MODULE_PARM(CustomDevice, "s");                         // .... CustomDevice
 176 #endif
 177
 178 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 179 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 180 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 181 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 182 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 183 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 184 MODULE_PARM_DESC(CustomDevice, " Define the fine tuning parameters for the device.  Default: null");
 185
 186
 187 // Misc stuff
 188 MODULE_AUTHOR(DRIVER_AUTHOR);
 189 MODULE_DESCRIPTION(DRIVER_DESC);
 190 MODULE_LICENSE(DRIVER_LICENSE);
 191 MODULE_VERSION(USBVISION_VERSION_STRING);
 192 MODULE_ALIAS(DRIVER_ALIAS);
 193
 194
 195 /****************************************************************************************/
 196 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 197 /* Device information is located at /sys/class/video4linux/video0                       */
 198 /* Device parameters information is located at /sys/module/usbvision                    */
 199 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 200 /****************************************************************************************/
 201
 202
 203 #define YES_NO(x) ((x) ? "Yes" : "No")
 204
 205 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 206 {
 207         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 208         return video_get_drvdata(vdev);
 209 }
 210
 211 static ssize_t show_version(struct class_device *cd, char *buf)
 212 {
 213         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 214 }
 215 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 216
 217 static ssize_t show_model(struct class_device *cd, char *buf)
 218 {
 219         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 220         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 221         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 222 }
 223 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 224
 225 static ssize_t show_hue(struct class_device *cd, char *buf)
 226 {
 227         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 228         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 229         struct v4l2_control ctrl;
 230         ctrl.id = V4L2_CID_HUE;
 231         ctrl.value = 0;
 232         if(usbvision->user)
 233                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 234         return sprintf(buf, "%d\n", ctrl.value);
 235 }
 236 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 237
 238 static ssize_t show_contrast(struct class_device *cd, char *buf)
 239 {
 240         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_CONTRAST;
 244         ctrl.value = 0;
 245         if(usbvision->user)
 246                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 250
 251 static ssize_t show_brightness(struct class_device *cd, char *buf)
 252 {
 253         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 255         struct v4l2_control ctrl;
 256         ctrl.id = V4L2_CID_BRIGHTNESS;
 257         ctrl.value = 0;
 258         if(usbvision->user)
 259                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 260         return sprintf(buf, "%d\n", ctrl.value);
 261 }
 262 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 263
 264 static ssize_t show_saturation(struct class_device *cd, char *buf)
 265 {
 266         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         struct v4l2_control ctrl;
 269         ctrl.id = V4L2_CID_SATURATION;
 270         ctrl.value = 0;
 271         if(usbvision->user)
 272                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 273         return sprintf(buf, "%d\n", ctrl.value);
 274 }
 275 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 276
 277 static ssize_t show_streaming(struct class_device *cd, char *buf)
 278 {
 279         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 280         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 281         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 282 }
 283 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 284
 285 static ssize_t show_compression(struct class_device *cd, char *buf)
 286 {
 287         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 288         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 289         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 290 }
 291 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 292
 293 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 294 {
 295         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 296         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 297         return sprintf(buf, "%d\n", usbvision->bridgeType);
 298 }
 299 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 300
 301 static void usbvision_create_sysfs(struct video_device *vdev)
 302 {
 303         int res;
 304         if (!vdev)
 305                 return;
 306         do {
 307                 res=class_device_create_file(&vdev->class_dev,
 308                                              &class_device_attr_version);
 309                 if (res<0)
 310                         break;
 311                 res=class_device_create_file(&vdev->class_dev,
 312                                              &class_device_attr_model);
 313                 if (res<0)
 314                         break;
 315                 res=class_device_create_file(&vdev->class_dev,
 316                                              &class_device_attr_hue);
 317                 if (res<0)
 318                         break;
 319                 res=class_device_create_file(&vdev->class_dev,
 320                                              &class_device_attr_contrast);
 321                 if (res<0)
 322                         break;
 323                 res=class_device_create_file(&vdev->class_dev,
 324                                              &class_device_attr_brightness);
 325                 if (res<0)
 326                         break;
 327                 res=class_device_create_file(&vdev->class_dev,
 328                                              &class_device_attr_saturation);
 329                 if (res<0)
 330                         break;
 331                 res=class_device_create_file(&vdev->class_dev,
 332                                              &class_device_attr_streaming);
 333                 if (res<0)
 334                         break;
 335                 res=class_device_create_file(&vdev->class_dev,
 336                                              &class_device_attr_compression);
 337                 if (res<0)
 338                         break;
 339                 res=class_device_create_file(&vdev->class_dev,
 340                                              &class_device_attr_bridge);
 341                 if (res>=0)
 342                         return;
 343         } while (0);
 344
 345         err("%s error: %d\n", __FUNCTION__, res);
 346 }
 347
 348 static void usbvision_remove_sysfs(struct video_device *vdev)
 349 {
 350         if (vdev) {
 351                 class_device_remove_file(&vdev->class_dev,
 352                                          &class_device_attr_version);
 353                 class_device_remove_file(&vdev->class_dev,
 354                                          &class_device_attr_model);
 355                 class_device_remove_file(&vdev->class_dev,
 356                                          &class_device_attr_hue);
 357                 class_device_remove_file(&vdev->class_dev,
 358                                          &class_device_attr_contrast);
 359                 class_device_remove_file(&vdev->class_dev,
 360                                          &class_device_attr_brightness);
 361                 class_device_remove_file(&vdev->class_dev,
 362                                          &class_device_attr_saturation);
 363                 class_device_remove_file(&vdev->class_dev,
 364                                          &class_device_attr_streaming);
 365                 class_device_remove_file(&vdev->class_dev,
 366                                          &class_device_attr_compression);
 367                 class_device_remove_file(&vdev->class_dev,
 368                                          &class_device_attr_bridge);
 369         }
 370 }
 371
 372
 373 /*
 374  * usbvision_open()
 375  *
 376  * This is part of Video 4 Linux API. The driver can be opened by one
 377  * client only (checks internal counter 'usbvision->user'). The procedure
 378  * then allocates buffers needed for video processing.
 379  *
 380  */
 381 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 382 {
 383         struct video_device *dev = video_devdata(file);
 384         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 385         int errCode = 0;
 386
 387         PDEBUG(DBG_IO, "open");
 388
 389
 390         usbvision_reset_powerOffTimer(usbvision);
 391
 392         if (usbvision->user)
 393                 errCode = -EBUSY;
 394         else {
 395                 /* Allocate memory for the scratch ring buffer */
 396                 errCode = usbvision_scratch_alloc(usbvision);
 397                 if (isocMode==ISOC_MODE_COMPRESS) {
 398                         /* Allocate intermediate decompression buffers only if needed */
 399                         errCode = usbvision_decompress_alloc(usbvision);
 400                 }
 401                 if (errCode) {
 402                         /* Deallocate all buffers if trouble */
 403                         usbvision_scratch_free(usbvision);
 404                         usbvision_decompress_free(usbvision);
 405                 }
 406         }
 407
 408         /* If so far no errors then we shall start the camera */
 409         if (!errCode) {
 410                 down(&usbvision->lock);
 411                 if (usbvision->power == 0) {
 412                         usbvision_power_on(usbvision);
 413                         usbvision_init_i2c(usbvision);
 414                 }
 415
 416                 /* Send init sequence only once, it's large! */
 417                 if (!usbvision->initialized) {
 418                         int setup_ok = 0;
 419                         setup_ok = usbvision_setup(usbvision,isocMode);
 420                         if (setup_ok)
 421                                 usbvision->initialized = 1;
 422                         else
 423                                 errCode = -EBUSY;
 424                 }
 425
 426                 if (!errCode) {
 427                         usbvision_begin_streaming(usbvision);
 428                         errCode = usbvision_init_isoc(usbvision);
 429                         /* device needs to be initialized before isoc transfer */
 430                         usbvision_muxsel(usbvision,0);
 431                         usbvision->user++;
 432                 }
 433                 else {
 434                         if (PowerOnAtOpen) {
 435                                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
 436                                 usbvision_power_off(usbvision);
 437                                 usbvision->initialized = 0;
 438                         }
 439                 }
 440                 up(&usbvision->lock);
 441         }
 442
 443         if (errCode) {
 444         }
 445
 446         /* prepare queues */
 447         usbvision_empty_framequeues(usbvision);
 448
 449         PDEBUG(DBG_IO, "success");
 450         return errCode;
 451 }
 452
 453 /*
 454  * usbvision_v4l2_close()
 455  *
 456  * This is part of Video 4 Linux API. The procedure
 457  * stops streaming and deallocates all buffers that were earlier
 458  * allocated in usbvision_v4l2_open().
 459  *
 460  */
 461 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 462 {
 463         struct video_device *dev = video_devdata(file);
 464         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 465
 466         PDEBUG(DBG_IO, "close");
 467         down(&usbvision->lock);
 468
 469         usbvision_audio_off(usbvision);
 470         usbvision_restart_isoc(usbvision);
 471         usbvision_stop_isoc(usbvision);
 472
 473         usbvision_decompress_free(usbvision);
 474         usbvision_frames_free(usbvision);
 475         usbvision_empty_framequeues(usbvision);
 476         usbvision_scratch_free(usbvision);
 477
 478         usbvision->user--;
 479
 480         if (PowerOnAtOpen) {
 481                 /* power off in a little while to avoid off/on every close/open short sequences */
 482                 usbvision_set_powerOffTimer(usbvision);
 483                 usbvision->initialized = 0;
 484         }
 485
 486         up(&usbvision->lock);
 487
 488         if (usbvision->remove_pending) {
 489                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 490                 usbvision_release(usbvision);
 491         }
 492
 493         PDEBUG(DBG_IO, "success");
 494
 495
 496         return 0;
 497 }
 498
 499
 500 /*
 501  * usbvision_ioctl()
 502  *
 503  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 504  *
 505  */
 506 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 507                                  unsigned int cmd, void *arg)
 508 {
 509         struct video_device *dev = video_devdata(file);
 510         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 511
 512         if (!USBVISION_IS_OPERATIONAL(usbvision))
 513                 return -EFAULT;
 514
 515         switch (cmd) {
 516
 517 #ifdef CONFIG_VIDEO_ADV_DEBUG
 518                 /* ioctls to allow direct acces to the NT100x registers */
 519                 case VIDIOC_DBG_G_REGISTER:
 520                 case VIDIOC_DBG_S_REGISTER:
 521                 {
 522                         struct v4l2_register *reg = arg;
 523                         int errCode;
 524
 525                         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 526                                 return -EINVAL;
 527                         if (!capable(CAP_SYS_ADMIN))
 528                                 return -EPERM;
 529                         /* NT100x has a 8-bit register space */
 530                         if (cmd == VIDIOC_DBG_G_REGISTER)
 531                                 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 532                         else
 533                                 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 534                         if (errCode < 0) {
 535                                 err("%s: VIDIOC_DBG_%c_REGISTER failed: error %d", __FUNCTION__,
 536                                     cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S', errCode);
 537                                 return errCode;
 538                         }
 539                         if (cmd == VIDIOC_DBG_S_REGISTER)
 540                                 reg->val = (u8)errCode;
 541
 542                         PDEBUG(DBG_IOCTL, "VIDIOC_DBG_%c_REGISTER reg=0x%02X, value=0x%02X",
 543                                cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S',
 544                                (unsigned int)reg->reg, (unsigned int)reg->val);
 545                         return 0;
 546                 }
 547 #endif
 548                 case VIDIOC_QUERYCAP:
 549                 {
 550                         struct v4l2_capability *vc=arg;
 551
 552                         memset(vc, 0, sizeof(*vc));
 553                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 554                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 555                                 sizeof(vc->card));
 556                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 557                                 sizeof(vc->bus_info));
 558                         vc->version = USBVISION_DRIVER_VERSION;
 559                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 560                                 V4L2_CAP_AUDIO |
 561                                 V4L2_CAP_READWRITE |
 562                                 V4L2_CAP_STREAMING |
 563                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 564                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 565                         return 0;
 566                 }
 567                 case VIDIOC_ENUMINPUT:
 568                 {
 569                         struct v4l2_input *vi = arg;
 570                         int chan;
 571
 572                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 573                                 return -EINVAL;
 574                         if (usbvision->have_tuner) {
 575                                 chan = vi->index;
 576                         }
 577                         else {
 578                                 chan = vi->index + 1; //skip Television string
 579                         }
 580                         switch(chan) {
 581                                 case 0:
 582                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 583                                                 strcpy(vi->name, "White Video Input");
 584                                         }
 585                                         else {
 586                                                 strcpy(vi->name, "Television");
 587                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 588                                                 vi->audioset = 1;
 589                                                 vi->tuner = chan;
 590                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 591                                         }
 592                                         break;
 593                                 case 1:
 594                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 595                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 596                                                 strcpy(vi->name, "Green Video Input");
 597                                         }
 598                                         else {
 599                                                 strcpy(vi->name, "Composite Video Input");
 600                                         }
 601                                         vi->std = V4L2_STD_PAL;
 602                                         break;
 603                                 case 2:
 604                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 605                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 606                                                 strcpy(vi->name, "Yellow Video Input");
 607                                         }
 608                                         else {
 609                                         strcpy(vi->name, "S-Video Input");
 610                                         }
 611                                         vi->std = V4L2_STD_PAL;
 612                                         break;
 613                                 case 3:
 614                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 615                                         strcpy(vi->name, "Red Video Input");
 616                                         vi->std = V4L2_STD_PAL;
 617                                         break;
 618                         }
 619                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 620                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 621                         return 0;
 622                 }
 623                 case VIDIOC_ENUMSTD:
 624                 {
 625                         struct v4l2_standard *e = arg;
 626                         unsigned int i;
 627                         int ret;
 628
 629                         i = e->index;
 630                         if (i >= TVNORMS)
 631                                 return -EINVAL;
 632                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 633                                                        tvnorms[e->index].name);
 634                         e->index = i;
 635                         if (ret < 0)
 636                                 return ret;
 637                         return 0;
 638                 }
 639                 case VIDIOC_G_INPUT:
 640                 {
 641                         int *input = arg;
 642                         *input = usbvision->ctl_input;
 643                         return 0;
 644                 }
 645                 case VIDIOC_S_INPUT:
 646                 {
 647                         int *input = arg;
 648                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 649                                 return -EINVAL;
 650                         usbvision->ctl_input = *input;
 651
 652                         down(&usbvision->lock);
 653                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 654                         usbvision_set_input(usbvision);
 655                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 656                         up(&usbvision->lock);
 657                         return 0;
 658                 }
 659                 case VIDIOC_G_STD:
 660                 {
 661                         v4l2_std_id *id = arg;
 662
 663                         *id = usbvision->tvnorm->id;
 664
 665                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 666                         return 0;
 667                 }
 668                 case VIDIOC_S_STD:
 669                 {
 670                         v4l2_std_id *id = arg;
 671                         unsigned int i;
 672
 673                         for (i = 0; i < TVNORMS; i++)
 674                                 if (*id == tvnorms[i].id)
 675                                         break;
 676                         if (i == TVNORMS)
 677                                 for (i = 0; i < TVNORMS; i++)
 678                                         if (*id & tvnorms[i].id)
 679                                                 break;
 680                         if (i == TVNORMS)
 681                                 return -EINVAL;
 682
 683                         down(&usbvision->lock);
 684                         usbvision->tvnorm = &tvnorms[i];
 685
 686                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 687                                          &usbvision->tvnorm->id);
 688
 689                         up(&usbvision->lock);
 690
 691                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 692                         return 0;
 693                 }
 694                 case VIDIOC_G_TUNER:
 695                 {
 696                         struct v4l2_tuner *vt = arg;
 697
 698                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 699                                 return -EINVAL;
 700                         strcpy(vt->name, "Television");
 701                         /* Let clients fill in the remainder of this struct */
 702                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 703
 704                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 705                         return 0;
 706                 }
 707                 case VIDIOC_S_TUNER:
 708                 {
 709                         struct v4l2_tuner *vt = arg;
 710
 711                         // Only no or one tuner for now
 712                         if (!usbvision->have_tuner || vt->index)
 713                                 return -EINVAL;
 714                         /* let clients handle this */
 715                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 716
 717                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 718                         return 0;
 719                 }
 720                 case VIDIOC_G_FREQUENCY:
 721                 {
 722                         struct v4l2_frequency *freq = arg;
 723
 724                         freq->tuner = 0; // Only one tuner
 725                         freq->type = V4L2_TUNER_ANALOG_TV;
 726                         freq->frequency = usbvision->freq;
 727                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 728                         return 0;
 729                 }
 730                 case VIDIOC_S_FREQUENCY:
 731                 {
 732                         struct v4l2_frequency *freq = arg;
 733
 734                         // Only no or one tuner for now
 735                         if (!usbvision->have_tuner || freq->tuner)
 736                                 return -EINVAL;
 737
 738                         usbvision->freq = freq->frequency;
 739                         call_i2c_clients(usbvision, cmd, freq);
 740                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 741                         return 0;
 742                 }
 743                 case VIDIOC_G_AUDIO:
 744                 {
 745                         struct v4l2_audio *v = arg;
 746                         memset(v,0, sizeof(v));
 747                         strcpy(v->name, "TV");
 748                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 749                         return 0;
 750                 }
 751                 case VIDIOC_S_AUDIO:
 752                 {
 753                         struct v4l2_audio *v = arg;
 754                         if(v->index) {
 755                                 return -EINVAL;
 756                         }
 757                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 758                         return 0;
 759                 }
 760                 case VIDIOC_QUERYCTRL:
 761                 {
 762                         struct v4l2_queryctrl *ctrl = arg;
 763                         int id=ctrl->id;
 764
 765                         memset(ctrl,0,sizeof(*ctrl));
 766                         ctrl->id=id;
 767
 768                         call_i2c_clients(usbvision, cmd, arg);
 769
 770                         if (ctrl->type)
 771                                 return 0;
 772                         else
 773                                 return -EINVAL;
 774
 775                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 776                 }
 777                 case VIDIOC_G_CTRL:
 778                 {
 779                         struct v4l2_control *ctrl = arg;
 780                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 781                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 782                         return 0;
 783                 }
 784                 case VIDIOC_S_CTRL:
 785                 {
 786                         struct v4l2_control *ctrl = arg;
 787
 788                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 789                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 790                         return 0;
 791                 }
 792                 case VIDIOC_REQBUFS:
 793                 {
 794                         struct v4l2_requestbuffers *vr = arg;
 795                         int ret;
 796
 797                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 798
 799                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 800                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 801                            (vr->memory != V4L2_MEMORY_MMAP))
 802                                 return -EINVAL;
 803
 804                         if(usbvision->streaming == Stream_On) {
 805                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 806                                     return ret;
 807                         }
 808
 809                         usbvision_frames_free(usbvision);
 810                         usbvision_empty_framequeues(usbvision);
 811                         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 812
 813                         usbvision->curFrame = NULL;
 814
 815                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 816                         return 0;
 817                 }
 818                 case VIDIOC_QUERYBUF:
 819                 {
 820                         struct v4l2_buffer *vb = arg;
 821                         struct usbvision_frame *frame;
 822
 823                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 824
 825                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 826                                 return -EINVAL;
 827                         }
 828                         if(vb->index>=usbvision->num_frames)  {
 829                                 return -EINVAL;
 830                         }
 831                         // Updating the corresponding frame state
 832                         vb->flags = 0;
 833                         frame = &usbvision->frame[vb->index];
 834                         if(frame->grabstate >= FrameState_Ready)
 835                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 836                         if(frame->grabstate >= FrameState_Done)
 837                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 838                         if(frame->grabstate == FrameState_Unused)
 839                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 840                         vb->memory = V4L2_MEMORY_MMAP;
 841
 842                         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 843
 844                         vb->memory = V4L2_MEMORY_MMAP;
 845                         vb->field = V4L2_FIELD_NONE;
 846                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 847                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 848                         vb->sequence = usbvision->frame[vb->index].sequence;
 849                         return 0;
 850                 }
 851                 case VIDIOC_QBUF:
 852                 {
 853                         struct v4l2_buffer *vb = arg;
 854                         struct usbvision_frame *frame;
 855                         unsigned long lock_flags;
 856
 857                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 858                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 859                                 return -EINVAL;
 860                         }
 861                         if(vb->index>=usbvision->num_frames)  {
 862                                 return -EINVAL;
 863                         }
 864
 865                         frame = &usbvision->frame[vb->index];
 866
 867                         if (frame->grabstate != FrameState_Unused) {
 868                                 return -EAGAIN;
 869                         }
 870
 871                         /* Mark it as ready and enqueue frame */
 872                         frame->grabstate = FrameState_Ready;
 873                         frame->scanstate = ScanState_Scanning;
 874                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 875
 876                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 877
 878                         /* set v4l2_format index */
 879                         frame->v4l2_format = usbvision->palette;
 880
 881                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 882                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 883                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 884
 885                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 886                         return 0;
 887                 }
 888                 case VIDIOC_DQBUF:
 889                 {
 890                         struct v4l2_buffer *vb = arg;
 891                         int ret;
 892                         struct usbvision_frame *f;
 893                         unsigned long lock_flags;
 894
 895                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 896                                 return -EINVAL;
 897
 898                         if (list_empty(&(usbvision->outqueue))) {
 899                                 if (usbvision->streaming == Stream_Idle)
 900                                         return -EINVAL;
 901                                 ret = wait_event_interruptible
 902                                         (usbvision->wait_frame,
 903                                          !list_empty(&(usbvision->outqueue)));
 904                                 if (ret)
 905                                         return ret;
 906                         }
 907
 908                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 909                         f = list_entry(usbvision->outqueue.next,
 910                                        struct usbvision_frame, frame);
 911                         list_del(usbvision->outqueue.next);
 912                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 913
 914                         f->grabstate = FrameState_Unused;
 915
 916                         vb->memory = V4L2_MEMORY_MMAP;
 917                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 918                         vb->index = f->index;
 919                         vb->sequence = f->sequence;
 920                         vb->timestamp = f->timestamp;
 921                         vb->field = V4L2_FIELD_NONE;
 922                         vb->bytesused = f->scanlength;
 923
 924                         return 0;
 925                 }
 926                 case VIDIOC_STREAMON:
 927                 {
 928                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 929
 930                         usbvision->streaming = Stream_On;
 931
 932                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 933
 934                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 935
 936                         return 0;
 937                 }
 938                 case VIDIOC_STREAMOFF:
 939                 {
 940                         int *type = arg;
 941                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 942
 943                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 944                                 return -EINVAL;
 945
 946                         if(usbvision->streaming == Stream_On) {
 947                                 usbvision_stream_interrupt(usbvision);
 948                                 // Stop all video streamings
 949                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 950                         }
 951                         usbvision_empty_framequeues(usbvision);
 952
 953                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 954                         return 0;
 955                 }
 956                 case VIDIOC_ENUM_FMT:
 957                 {
 958                         struct v4l2_fmtdesc *vfd = arg;
 959
 960                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 961                                 return -EINVAL;
 962                         }
 963                         vfd->flags = 0;
 964                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 965                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 966                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 967                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 968                         return 0;
 969                 }
 970                 case VIDIOC_G_FMT:
 971                 {
 972                         struct v4l2_format *vf = arg;
 973
 974                         switch (vf->type) {
 975                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 976                                 {
 977                                         vf->fmt.pix.width = usbvision->curwidth;
 978                                         vf->fmt.pix.height = usbvision->curheight;
 979                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 980                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 981                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 982                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 983                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 984                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 985                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
 986                                         return 0;
 987                                 }
 988                                 default:
 989                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
 990                                         return -EINVAL;
 991                         }
 992                         return 0;
 993                 }
 994                 case VIDIOC_TRY_FMT:
 995                 case VIDIOC_S_FMT:
 996                 {
 997                         struct v4l2_format *vf = arg;
 998                         int formatIdx,ret;
 999
1000                         switch(vf->type) {
1001                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1002                                 {
1003                                         /* Find requested format in available ones */
1004                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1005                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
1006                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1007                                                         break;
1008                                                 }
1009                                         }
1010                                         /* robustness */
1011                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1012                                                 return -EINVAL;
1013                                         }
1014                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1015                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1016
1017                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
1018                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1019
1020                                         if(cmd == VIDIOC_TRY_FMT) {
1021                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
1022                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1023                                                 return 0;
1024                                         }
1025
1026                                         /* stop io in case it is already in progress */
1027                                         if(usbvision->streaming == Stream_On) {
1028                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1029                                                         return ret;
1030                                         }
1031                                         usbvision_frames_free(usbvision);
1032                                         usbvision_empty_framequeues(usbvision);
1033
1034                                         usbvision->curFrame = NULL;
1035
1036                                         // by now we are committed to the new data...
1037                                         down(&usbvision->lock);
1038                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1039                                         up(&usbvision->lock);
1040
1041                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1042                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1043                                         return 0;
1044                                 }
1045                                 default:
1046                                         return -EINVAL;
1047                         }
1048                 }
1049                 default:
1050                         return -ENOIOCTLCMD;
1051         }
1052         return 0;
1053 }
1054
1055 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1056                        unsigned int cmd, unsigned long arg)
1057 {
1058         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1059 }
1060
1061
1062 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1063                       size_t count, loff_t *ppos)
1064 {
1065         struct video_device *dev = video_devdata(file);
1066         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1067         int noblock = file->f_flags & O_NONBLOCK;
1068         unsigned long lock_flags;
1069
1070         int ret,i;
1071         struct usbvision_frame *frame;
1072
1073         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1074
1075         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1076                 return -EFAULT;
1077
1078         /* This entry point is compatible with the mmap routines so that a user can do either
1079            VIDIOC_QBUF/VIDIOC_DQBUF to get frames or call read on the device. */
1080         if(!usbvision->num_frames) {
1081                 /* First, allocate some frames to work with if this has not been done with
1082                  VIDIOC_REQBUF */
1083                 usbvision_frames_free(usbvision);
1084                 usbvision_empty_framequeues(usbvision);
1085                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1086         }
1087
1088         if(usbvision->streaming != Stream_On) {
1089                 /* no stream is running, make it running ! */
1090                 usbvision->streaming = Stream_On;
1091                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1092         }
1093
1094         /* Then, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1095         for(i=0;i<usbvision->num_frames;i++) {
1096                 frame = &usbvision->frame[i];
1097                 if(frame->grabstate == FrameState_Unused) {
1098                         /* Mark it as ready and enqueue frame */
1099                         frame->grabstate = FrameState_Ready;
1100                         frame->scanstate = ScanState_Scanning;
1101                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1102
1103                         /* set v4l2_format index */
1104                         frame->v4l2_format = usbvision->palette;
1105
1106                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1107                         list_add_tail(&frame->frame, &usbvision->inqueue);
1108                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1109                 }
1110         }
1111
1112         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1113         if (list_empty(&(usbvision->outqueue))) {
1114                 if(noblock)
1115                         return -EAGAIN;
1116
1117                 ret = wait_event_interruptible
1118                         (usbvision->wait_frame,
1119                          !list_empty(&(usbvision->outqueue)));
1120                 if (ret)
1121                         return ret;
1122         }
1123
1124         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1125         frame = list_entry(usbvision->outqueue.next,
1126                            struct usbvision_frame, frame);
1127         list_del(usbvision->outqueue.next);
1128         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1129
1130         /* An error returns an empty frame */
1131         if (frame->grabstate == FrameState_Error) {
1132                 frame->bytes_read = 0;
1133                 return 0;
1134         }
1135
1136         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1137                        frame->index, frame->bytes_read, frame->scanlength);
1138
1139         /* copy bytes to user space; we allow for partials reads */
1140         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1141                 count = frame->scanlength - frame->bytes_read;
1142
1143         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1144                 return -EFAULT;
1145         }
1146
1147         frame->bytes_read += count;
1148         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1149                        (unsigned long)count, frame->bytes_read);
1150
1151         // For now, forget the frame if it has not been read in one shot.
1152 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1153                 frame->bytes_read = 0;
1154
1155                 /* Mark it as available to be used again. */
1156                 frame->grabstate = FrameState_Unused;
1157 /*      } */
1158
1159         return count;
1160 }
1161
1162 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1163 {
1164         unsigned long size = vma->vm_end - vma->vm_start,
1165                 start = vma->vm_start;
1166         void *pos;
1167         u32 i;
1168
1169         struct video_device *dev = video_devdata(file);
1170         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1171
1172         PDEBUG(DBG_MMAP, "mmap");
1173
1174         down(&usbvision->lock);
1175
1176         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1177                 up(&usbvision->lock);
1178                 return -EFAULT;
1179         }
1180
1181         if (!(vma->vm_flags & VM_WRITE) ||
1182             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1183                 up(&usbvision->lock);
1184                 return -EINVAL;
1185         }
1186
1187         for (i = 0; i < usbvision->num_frames; i++) {
1188                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1189                         break;
1190         }
1191         if (i == usbvision->num_frames) {
1192                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1193                 up(&usbvision->lock);
1194                 return -EINVAL;
1195         }
1196
1197         /* VM_IO is eventually going to replace PageReserved altogether */
1198         vma->vm_flags |= VM_IO;
1199         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1200
1201         pos = usbvision->frame[i].data;
1202         while (size > 0) {
1203
1204                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1205                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1206                         up(&usbvision->lock);
1207                         return -EAGAIN;
1208                 }
1209                 start += PAGE_SIZE;
1210                 pos += PAGE_SIZE;
1211                 size -= PAGE_SIZE;
1212         }
1213
1214         up(&usbvision->lock);
1215         return 0;
1216 }
1217
1218
1219 /*
1220  * Here comes the stuff for radio on usbvision based devices
1221  *
1222  */
1223 static int usbvision_radio_open(struct inode *inode, struct file *file)
1224 {
1225         struct video_device *dev = video_devdata(file);
1226         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1227         struct v4l2_frequency freq;
1228         int errCode = 0;
1229
1230         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1231
1232         down(&usbvision->lock);
1233
1234         if (usbvision->user) {
1235                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1236                 errCode = -EBUSY;
1237         }
1238         else {
1239                 if(PowerOnAtOpen) {
1240                         usbvision_reset_powerOffTimer(usbvision);
1241                         if (usbvision->power == 0) {
1242                                 usbvision_power_on(usbvision);
1243                                 usbvision_init_i2c(usbvision);
1244                         }
1245                 }
1246
1247                 /* Alternate interface 1 is is the biggest frame size */
1248                 errCode = usbvision_set_alternate(usbvision);
1249                 if (errCode < 0) {
1250                         usbvision->last_error = errCode;
1251                         return -EBUSY;
1252                 }
1253
1254                 // If so far no errors then we shall start the radio
1255                 usbvision->radio = 1;
1256                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1257                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1258                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1259                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1260                 usbvision->user++;
1261         }
1262
1263         if (errCode) {
1264                 if (PowerOnAtOpen) {
1265                         usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1266                         usbvision_power_off(usbvision);
1267                         usbvision->initialized = 0;
1268                 }
1269         }
1270         up(&usbvision->lock);
1271         return errCode;
1272 }
1273
1274
1275 static int usbvision_radio_close(struct inode *inode, struct file *file)
1276 {
1277         struct video_device *dev = video_devdata(file);
1278         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1279         int errCode = 0;
1280
1281         PDEBUG(DBG_IO, "");
1282
1283         down(&usbvision->lock);
1284
1285         /* Set packet size to 0 */
1286         usbvision->ifaceAlt=0;
1287         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1288                                     usbvision->ifaceAlt);
1289
1290         usbvision_audio_off(usbvision);
1291         usbvision->radio=0;
1292         usbvision->user--;
1293
1294         if (PowerOnAtOpen) {
1295                 usbvision_set_powerOffTimer(usbvision);
1296                 usbvision->initialized = 0;
1297         }
1298
1299         up(&usbvision->lock);
1300
1301         if (usbvision->remove_pending) {
1302                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1303                 usbvision_release(usbvision);
1304         }
1305
1306
1307         PDEBUG(DBG_IO, "success");
1308
1309         return errCode;
1310 }
1311
1312 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1313                                  unsigned int cmd, void *arg)
1314 {
1315         struct video_device *dev = video_devdata(file);
1316         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1317
1318         if (!USBVISION_IS_OPERATIONAL(usbvision))
1319                 return -EIO;
1320
1321         switch (cmd) {
1322                 case VIDIOC_QUERYCAP:
1323                 {
1324                         struct v4l2_capability *vc=arg;
1325
1326                         memset(vc, 0, sizeof(*vc));
1327                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1328                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1329                                 sizeof(vc->card));
1330                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1331                                 sizeof(vc->bus_info));
1332                         vc->version = USBVISION_DRIVER_VERSION;
1333                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1334                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1335                         return 0;
1336                 }
1337                 case VIDIOC_QUERYCTRL:
1338                 {
1339                         struct v4l2_queryctrl *ctrl = arg;
1340                         int id=ctrl->id;
1341
1342                         memset(ctrl,0,sizeof(*ctrl));
1343                         ctrl->id=id;
1344
1345                         call_i2c_clients(usbvision, cmd, arg);
1346                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1347
1348                         if (ctrl->type)
1349                                 return 0;
1350                         else
1351                                 return -EINVAL;
1352
1353                 }
1354                 case VIDIOC_G_CTRL:
1355                 {
1356                         struct v4l2_control *ctrl = arg;
1357
1358                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1359                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1360                         return 0;
1361                 }
1362                 case VIDIOC_S_CTRL:
1363                 {
1364                         struct v4l2_control *ctrl = arg;
1365
1366                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1367                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1368                         return 0;
1369                 }
1370                 case VIDIOC_G_TUNER:
1371                 {
1372                         struct v4l2_tuner *t = arg;
1373
1374                         if (t->index > 0)
1375                                 return -EINVAL;
1376
1377                         memset(t,0,sizeof(*t));
1378                         strcpy(t->name, "Radio");
1379                         t->type = V4L2_TUNER_RADIO;
1380
1381                         /* Let clients fill in the remainder of this struct */
1382                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1383                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1384                         return 0;
1385                 }
1386                 case VIDIOC_S_TUNER:
1387                 {
1388                         struct v4l2_tuner *vt = arg;
1389
1390                         // Only no or one tuner for now
1391                         if (!usbvision->have_tuner || vt->index)
1392                                 return -EINVAL;
1393                         /* let clients handle this */
1394                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1395
1396                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1397                         return 0;
1398                 }
1399                 case VIDIOC_G_AUDIO:
1400                 {
1401                         struct v4l2_audio *a = arg;
1402
1403                         memset(a,0,sizeof(*a));
1404                         strcpy(a->name,"Radio");
1405                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1406                         return 0;
1407                 }
1408                 case VIDIOC_S_AUDIO:
1409                 case VIDIOC_S_INPUT:
1410                 case VIDIOC_S_STD:
1411                 return 0;
1412
1413                 case VIDIOC_G_FREQUENCY:
1414                 {
1415                         struct v4l2_frequency *f = arg;
1416
1417                         memset(f,0,sizeof(*f));
1418
1419                         f->type = V4L2_TUNER_RADIO;
1420                         f->frequency = usbvision->freq;
1421                         call_i2c_clients(usbvision, cmd, f);
1422                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1423
1424                         return 0;
1425                 }
1426                 case VIDIOC_S_FREQUENCY:
1427                 {
1428                         struct v4l2_frequency *f = arg;
1429
1430                         if (f->tuner != 0)
1431                                 return -EINVAL;
1432                         usbvision->freq = f->frequency;
1433                         call_i2c_clients(usbvision, cmd, f);
1434                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1435
1436                         return 0;
1437                 }
1438                 default:
1439                 {
1440                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1441                         return -ENOIOCTLCMD;
1442                 }
1443         }
1444         return 0;
1445 }
1446
1447
1448 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1449                        unsigned int cmd, unsigned long arg)
1450 {
1451         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1452 }
1453
1454
1455 /*
1456  * Here comes the stuff for vbi on usbvision based devices
1457  *
1458  */
1459 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1460 {
1461         /* TODO */
1462         return -EINVAL;
1463
1464 }
1465
1466 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1467 {
1468         /* TODO */
1469         return -EINVAL;
1470 }
1471
1472 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1473                                  unsigned int cmd, void *arg)
1474 {
1475         /* TODO */
1476         return -EINVAL;
1477 }
1478
1479 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1480                        unsigned int cmd, unsigned long arg)
1481 {
1482         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1483 }
1484
1485
1486 //
1487 // Video registration stuff
1488 //
1489
1490 // Video template
1491 static const struct file_operations usbvision_fops = {
1492         .owner             = THIS_MODULE,
1493         .open           = usbvision_v4l2_open,
1494         .release        = usbvision_v4l2_close,
1495         .read           = usbvision_v4l2_read,
1496         .mmap           = usbvision_v4l2_mmap,
1497         .ioctl          = usbvision_v4l2_ioctl,
1498         .llseek         = no_llseek,
1499 };
1500 static struct video_device usbvision_video_template = {
1501         .owner             = THIS_MODULE,
1502         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1503         .hardware       = VID_HARDWARE_USBVISION,
1504         .fops           = &usbvision_fops,
1505         .name           = "usbvision-video",
1506         .release        = video_device_release,
1507         .minor          = -1,
1508 };
1509
1510
1511 // Radio template
1512 static const struct file_operations usbvision_radio_fops = {
1513         .owner             = THIS_MODULE,
1514         .open           = usbvision_radio_open,
1515         .release        = usbvision_radio_close,
1516         .ioctl          = usbvision_radio_ioctl,
1517         .llseek         = no_llseek,
1518 };
1519
1520 static struct video_device usbvision_radio_template=
1521 {
1522         .owner             = THIS_MODULE,
1523         .type           = VID_TYPE_TUNER,
1524         .hardware       = VID_HARDWARE_USBVISION,
1525         .fops           = &usbvision_radio_fops,
1526         .release        = video_device_release,
1527         .name           = "usbvision-radio",
1528         .minor          = -1,
1529 };
1530
1531
1532 // vbi template
1533 static const struct file_operations usbvision_vbi_fops = {
1534         .owner             = THIS_MODULE,
1535         .open           = usbvision_vbi_open,
1536         .release        = usbvision_vbi_close,
1537         .ioctl          = usbvision_vbi_ioctl,
1538         .llseek         = no_llseek,
1539 };
1540
1541 static struct video_device usbvision_vbi_template=
1542 {
1543         .owner             = THIS_MODULE,
1544         .type           = VID_TYPE_TUNER,
1545         .hardware       = VID_HARDWARE_USBVISION,
1546         .fops           = &usbvision_vbi_fops,
1547         .release        = video_device_release,
1548         .name           = "usbvision-vbi",
1549         .minor          = -1,
1550 };
1551
1552
1553 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1554                                         struct video_device *vdev_template,
1555                                         char *name)
1556 {
1557         struct usb_device *usb_dev = usbvision->dev;
1558         struct video_device *vdev;
1559
1560         if (usb_dev == NULL) {
1561                 err("%s: usbvision->dev is not set", __FUNCTION__);
1562                 return NULL;
1563         }
1564
1565         vdev = video_device_alloc();
1566         if (NULL == vdev) {
1567                 return NULL;
1568         }
1569         *vdev = *vdev_template;
1570 //      vdev->minor   = -1;
1571         vdev->dev     = &usb_dev->dev;
1572         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1573         video_set_drvdata(vdev, usbvision);
1574         return vdev;
1575 }
1576
1577 // unregister video4linux devices
1578 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1579 {
1580         // vbi Device:
1581         if (usbvision->vbi) {
1582                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1583                 if (usbvision->vbi->minor != -1) {
1584                         video_unregister_device(usbvision->vbi);
1585                 }
1586                 else {
1587                         video_device_release(usbvision->vbi);
1588                 }
1589                 usbvision->vbi = NULL;
1590         }
1591
1592         // Radio Device:
1593         if (usbvision->rdev) {
1594                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1595                 if (usbvision->rdev->minor != -1) {
1596                         video_unregister_device(usbvision->rdev);
1597                 }
1598                 else {
1599                         video_device_release(usbvision->rdev);
1600                 }
1601                 usbvision->rdev = NULL;
1602         }
1603
1604         // Video Device:
1605         if (usbvision->vdev) {
1606                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1607                 if (usbvision->vdev->minor != -1) {
1608                         video_unregister_device(usbvision->vdev);
1609                 }
1610                 else {
1611                         video_device_release(usbvision->vdev);
1612                 }
1613                 usbvision->vdev = NULL;
1614         }
1615 }
1616
1617 // register video4linux devices
1618 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1619 {
1620         // Video Device:
1621         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1622         if (usbvision->vdev == NULL) {
1623                 goto err_exit;
1624         }
1625         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1626                 goto err_exit;
1627         }
1628         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n", usbvision->nr,usbvision->vdev->minor & 0x1f);
1629
1630         // Radio Device:
1631         if (usbvision_device_data[usbvision->DevModel].Radio) {
1632                 // usbvision has radio
1633                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1634                 if (usbvision->rdev == NULL) {
1635                         goto err_exit;
1636                 }
1637                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1638                         goto err_exit;
1639                 }
1640                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n", usbvision->nr, usbvision->rdev->minor & 0x1f);
1641         }
1642         // vbi Device:
1643         if (usbvision_device_data[usbvision->DevModel].vbi) {
1644                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1645                 if (usbvision->vdev == NULL) {
1646                         goto err_exit;
1647                 }
1648                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1649                         goto err_exit;
1650                 }
1651                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n", usbvision->nr,usbvision->vbi->minor & 0x1f);
1652         }
1653         // all done
1654         return 0;
1655
1656  err_exit:
1657         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1658         usbvision_unregister_video(usbvision);
1659         return -1;
1660 }
1661
1662 /*
1663  * usbvision_alloc()
1664  *
1665  * This code allocates the struct usb_usbvision. It is filled with default values.
1666  *
1667  * Returns NULL on error, a pointer to usb_usbvision else.
1668  *
1669  */
1670 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1671 {
1672         struct usb_usbvision *usbvision;
1673
1674         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1675                 goto err_exit;
1676         }
1677
1678         usbvision->dev = dev;
1679
1680         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1681
1682         // prepare control urb for control messages during interrupts
1683         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1684         if (usbvision->ctrlUrb == NULL) {
1685                 goto err_exit;
1686         }
1687         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1688         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1689
1690         usbvision_init_powerOffTimer(usbvision);
1691
1692         return usbvision;
1693
1694 err_exit:
1695         if (usbvision && usbvision->ctrlUrb) {
1696                 usb_free_urb(usbvision->ctrlUrb);
1697         }
1698         if (usbvision) {
1699                 kfree(usbvision);
1700         }
1701         return NULL;
1702 }
1703
1704 /*
1705  * usbvision_release()
1706  *
1707  * This code does final release of struct usb_usbvision. This happens
1708  * after the device is disconnected -and- all clients closed their files.
1709  *
1710  */
1711 static void usbvision_release(struct usb_usbvision *usbvision)
1712 {
1713         PDEBUG(DBG_PROBE, "");
1714
1715         down(&usbvision->lock);
1716
1717         usbvision_reset_powerOffTimer(usbvision);
1718
1719         usbvision->initialized = 0;
1720
1721         up(&usbvision->lock);
1722
1723         usbvision_remove_sysfs(usbvision->vdev);
1724         usbvision_unregister_video(usbvision);
1725
1726         if (usbvision->ctrlUrb) {
1727                 usb_free_urb(usbvision->ctrlUrb);
1728         }
1729
1730         kfree(usbvision);
1731
1732         PDEBUG(DBG_PROBE, "success");
1733 }
1734
1735
1736 /******************************** usb interface *****************************************/
1737
1738 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1739 {
1740         int model,i;
1741
1742         if (usbvision == NULL)
1743                 return;
1744
1745         model = usbvision->DevModel;
1746         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1747
1748         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2 >= 0) {
1749                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2 & 0xff;
1750         } else {
1751                 usbvision->Vin_Reg2_Preset = 0;
1752         }
1753
1754         for (i = 0; i < TVNORMS; i++)
1755                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1756                         break;
1757         if (i == TVNORMS)
1758                 i = 0;
1759         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1760
1761         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1762         usbvision->ctl_input = 0;
1763
1764         /* This should be here to make i2c clients to be able to register */
1765         usbvision_audio_off(usbvision); //first switch off audio
1766         if (!PowerOnAtOpen) {
1767                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1768                 usbvision_init_i2c(usbvision);
1769         }
1770 }
1771
1772 /*
1773  * usbvision_probe()
1774  *
1775  * This procedure queries device descriptor and accepts the interface
1776  * if it looks like USBVISION video device
1777  *
1778  */
1779 static int __devinit usbvision_probe(struct usb_interface *intf,
1780                                      const struct usb_device_id *devid)
1781 {
1782         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1783         struct usb_interface *uif;
1784         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1785         const struct usb_host_interface *interface;
1786         struct usb_usbvision *usbvision = NULL;
1787         const struct usb_endpoint_descriptor *endpoint;
1788         int model,i;
1789
1790         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1791                                 dev->descriptor.idVendor,
1792                                 dev->descriptor.idProduct, ifnum);
1793
1794         model = devid->driver_info;
1795         printk(KERN_INFO "%s: %s found\n", __FUNCTION__,
1796                                 usbvision_device_data[model].ModelString);
1797
1798         if (usbvision_device_data[model].Interface >= 0) {
1799                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1800         }
1801         else {
1802                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1803         }
1804         endpoint = &interface->endpoint[1].desc;
1805         if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
1806                 err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
1807                 err("%s: Endpoint attributes %d", __FUNCTION__, endpoint->bmAttributes);
1808                 return -ENODEV;
1809         }
1810         if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
1811                 err("%s: interface %d. has ISO OUT endpoint!", __FUNCTION__, ifnum);
1812                 return -ENODEV;
1813         }
1814
1815         usb_get_dev(dev);
1816
1817         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1818                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1819                 return -ENOMEM;
1820         }
1821
1822         if (dev->descriptor.bNumConfigurations > 1) {
1823                 usbvision->bridgeType = BRIDGE_NT1004;
1824         }
1825         else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1826                 usbvision->bridgeType = BRIDGE_NT1005;
1827         }
1828         else {
1829                 usbvision->bridgeType = BRIDGE_NT1003;
1830         }
1831         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1832
1833         down(&usbvision->lock);
1834
1835         /* compute alternate max packet sizes */
1836         uif = dev->actconfig->interface[0];
1837
1838         usbvision->num_alt=uif->num_altsetting;
1839         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1840         usbvision->alt_max_pkt_size = kmalloc(32*
1841                                               usbvision->num_alt,GFP_KERNEL);
1842         if (usbvision->alt_max_pkt_size == NULL) {
1843                 err("usbvision: out of memory!\n");
1844                 return -ENOMEM;
1845         }
1846
1847         for (i = 0; i < usbvision->num_alt ; i++) {
1848                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1849                                       wMaxPacketSize);
1850                 usbvision->alt_max_pkt_size[i] =
1851                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1852                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1853                        usbvision->alt_max_pkt_size[i]);
1854         }
1855
1856
1857         usbvision->nr = usbvision_nr++;
1858
1859         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1860         if (usbvision->have_tuner) {
1861                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1862         }
1863
1864         usbvision->tuner_addr = ADDR_UNSET;
1865
1866         usbvision->DevModel = model;
1867         usbvision->remove_pending = 0;
1868         usbvision->iface = ifnum;
1869         usbvision->ifaceAlt = 0;
1870         usbvision->video_endp = endpoint->bEndpointAddress;
1871         usbvision->isocPacketSize = 0;
1872         usbvision->usb_bandwidth = 0;
1873         usbvision->user = 0;
1874         usbvision->streaming = Stream_Off;
1875         usbvision_register_video(usbvision);
1876         usbvision_configure_video(usbvision);
1877         up(&usbvision->lock);
1878
1879
1880         usb_set_intfdata (intf, usbvision);
1881         usbvision_create_sysfs(usbvision->vdev);
1882
1883         PDEBUG(DBG_PROBE, "success");
1884         return 0;
1885 }
1886
1887
1888 /*
1889  * usbvision_disconnect()
1890  *
1891  * This procedure stops all driver activity, deallocates interface-private
1892  * structure (pointed by 'ptr') and after that driver should be removable
1893  * with no ill consequences.
1894  *
1895  */
1896 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1897 {
1898         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1899
1900         PDEBUG(DBG_PROBE, "");
1901
1902         if (usbvision == NULL) {
1903                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1904                 return;
1905         }
1906         usb_set_intfdata (intf, NULL);
1907
1908         down(&usbvision->lock);
1909
1910         // At this time we ask to cancel outstanding URBs
1911         usbvision_stop_isoc(usbvision);
1912
1913         if (usbvision->power) {
1914                 usbvision_i2c_usb_del_bus(&usbvision->i2c_adap);
1915                 usbvision_power_off(usbvision);
1916         }
1917         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1918
1919         usb_put_dev(usbvision->dev);
1920         usbvision->dev = NULL;  // USB device is no more
1921
1922         up(&usbvision->lock);
1923
1924         if (usbvision->user) {
1925                 printk(KERN_INFO "%s: In use, disconnect pending\n", __FUNCTION__);
1926                 wake_up_interruptible(&usbvision->wait_frame);
1927                 wake_up_interruptible(&usbvision->wait_stream);
1928         }
1929         else {
1930                 usbvision_release(usbvision);
1931         }
1932
1933         PDEBUG(DBG_PROBE, "success");
1934
1935 }
1936
1937 static struct usb_driver usbvision_driver = {
1938         .name           = "usbvision",
1939         .id_table       = usbvision_table,
1940         .probe          = usbvision_probe,
1941         .disconnect     = usbvision_disconnect
1942 };
1943
1944 /*
1945  * customdevice_process()
1946  *
1947  * This procedure preprocesses CustomDevice parameter if any
1948  *
1949  */
1950 static void customdevice_process(void)
1951 {
1952         unsigned int id_vend,id_prod;
1953
1954         usbvision_device_data[0]=usbvision_device_data[1];
1955         usbvision_table[0]=usbvision_table[1];
1956
1957         if(CustomDevice)
1958         {
1959                 char *parse=CustomDevice;
1960
1961                 PDEBUG(DBG_PROBE, "CustomDevice=%s", CustomDevice);
1962
1963                 /*format is CustomDevice="0x0573 0x4D31 0 7113 3 PAL 1 1 1 5 -1 -1 -1 -1 -1"
1964                 usbvision_device_data[0].idVendor;
1965                 usbvision_device_data[0].idProduct;
1966                 usbvision_device_data[0].Interface;
1967                 usbvision_device_data[0].Codec;
1968                 usbvision_device_data[0].VideoChannels;
1969                 usbvision_device_data[0].VideoNorm;
1970                 usbvision_device_data[0].AudioChannels;
1971                 usbvision_device_data[0].Radio;
1972                 usbvision_device_data[0].Tuner;
1973                 usbvision_device_data[0].TunerType;
1974                 usbvision_device_data[0].Vin_Reg1;
1975                 usbvision_device_data[0].Vin_Reg2;
1976                 usbvision_device_data[0].X_Offset;
1977                 usbvision_device_data[0].Y_Offset;
1978                 usbvision_device_data[0].Dvi_yuv;
1979                 usbvision_device_data[0].ModelString;
1980                 */
1981
1982                 rmspace(parse);
1983                 usbvision_device_data[0].ModelString="USBVISION Custom Device";
1984
1985                 parse+=2;
1986                 sscanf(parse,"%u",&id_vend);
1987                 usbvision_table[0].idVendor=id_vend;
1988
1989                 goto2next(parse);
1990                 PDEBUG(DBG_PROBE, "idVendor=0x%.4X", usbvision_table[0].idVendor);
1991                 parse+=2;
1992                 sscanf(parse,"%u",&id_prod);
1993                 usbvision_table[0].idProduct=id_prod;
1994                 goto2next(parse);
1995                 PDEBUG(DBG_PROBE, "idProduct=0x%.4X", usbvision_table[0].idProduct);
1996                 sscanf(parse,"%d",&usbvision_device_data[0].Interface);
1997                 goto2next(parse);
1998                 PDEBUG(DBG_PROBE, "Interface=%d", usbvision_device_data[0].Interface);
1999                 sscanf(parse,"%d",&usbvision_device_data[0].Codec);
2000                 goto2next(parse);
2001                 PDEBUG(DBG_PROBE, "Codec=%d", usbvision_device_data[0].Codec);
2002                 sscanf(parse,"%d",&usbvision_device_data[0].VideoChannels);
2003                 goto2next(parse);
2004                 PDEBUG(DBG_PROBE, "VideoChannels=%d", usbvision_device_data[0].VideoChannels);
2005
2006                 switch(*parse)
2007                 {
2008                         case 'P':
2009                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL");
2010                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
2011                                 break;
2012
2013                         case 'S':
2014                                 PDEBUG(DBG_PROBE, "VideoNorm=SECAM");
2015                                 usbvision_device_data[0].VideoNorm=V4L2_STD_SECAM;
2016                                 break;
2017
2018                         case 'N':
2019                                 PDEBUG(DBG_PROBE, "VideoNorm=NTSC");
2020                                 usbvision_device_data[0].VideoNorm=V4L2_STD_NTSC;
2021                                 break;
2022
2023                         default:
2024                                 PDEBUG(DBG_PROBE, "VideoNorm=PAL (by default)");
2025                                 usbvision_device_data[0].VideoNorm=V4L2_STD_PAL;
2026                                 break;
2027                 }
2028                 goto2next(parse);
2029
2030                 sscanf(parse,"%d",&usbvision_device_data[0].AudioChannels);
2031                 goto2next(parse);
2032                 PDEBUG(DBG_PROBE, "AudioChannels=%d", usbvision_device_data[0].AudioChannels);
2033                 sscanf(parse,"%d",&usbvision_device_data[0].Radio);
2034                 goto2next(parse);
2035                 PDEBUG(DBG_PROBE, "Radio=%d", usbvision_device_data[0].Radio);
2036                 sscanf(parse,"%d",&usbvision_device_data[0].Tuner);
2037                 goto2next(parse);
2038                 PDEBUG(DBG_PROBE, "Tuner=%d", usbvision_device_data[0].Tuner);
2039                 sscanf(parse,"%d",&usbvision_device_data[0].TunerType);
2040                 goto2next(parse);
2041                 PDEBUG(DBG_PROBE, "TunerType=%d", usbvision_device_data[0].TunerType);
2042                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg1);
2043                 goto2next(parse);
2044                 PDEBUG(DBG_PROBE, "Vin_Reg1=%d", usbvision_device_data[0].Vin_Reg1);
2045                 sscanf(parse,"%d",&usbvision_device_data[0].Vin_Reg2);
2046                 goto2next(parse);
2047                 PDEBUG(DBG_PROBE, "Vin_Reg2=%d", usbvision_device_data[0].Vin_Reg2);
2048                 sscanf(parse,"%d",&usbvision_device_data[0].X_Offset);
2049                 goto2next(parse);
2050                 PDEBUG(DBG_PROBE, "X_Offset=%d", usbvision_device_data[0].X_Offset);
2051                 sscanf(parse,"%d",&usbvision_device_data[0].Y_Offset);
2052                 goto2next(parse);
2053                 PDEBUG(DBG_PROBE, "Y_Offset=%d", usbvision_device_data[0].Y_Offset);
2054                 sscanf(parse,"%d",&usbvision_device_data[0].Dvi_yuv);
2055                 PDEBUG(DBG_PROBE, "Dvi_yuv=%d", usbvision_device_data[0].Dvi_yuv);
2056
2057                 //add to usbvision_table also
2058                 usbvision_table[0].match_flags=USB_DEVICE_ID_MATCH_DEVICE;
2059         }
2060 }
2061
2062
2063
2064 /*
2065  * usbvision_init()
2066  *
2067  * This code is run to initialize the driver.
2068  *
2069  */
2070 static int __init usbvision_init(void)
2071 {
2072         int errCode;
2073
2074         PDEBUG(DBG_PROBE, "");
2075
2076         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
2077         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
2078         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
2079         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
2080
2081         /* disable planar mode support unless compression enabled */
2082         if (isocMode != ISOC_MODE_COMPRESS ) {
2083                 // FIXME : not the right way to set supported flag
2084                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
2085                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
2086         }
2087
2088         customdevice_process();
2089
2090         errCode = usb_register(&usbvision_driver);
2091
2092         if (errCode == 0) {
2093                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
2094                 PDEBUG(DBG_PROBE, "success");
2095         }
2096         return errCode;
2097 }
2098
2099 static void __exit usbvision_exit(void)
2100 {
2101  PDEBUG(DBG_PROBE, "");
2102
2103  usb_deregister(&usbvision_driver);
2104  PDEBUG(DBG_PROBE, "success");
2105 }
2106
2107 module_init(usbvision_init);
2108 module_exit(usbvision_exit);
2109
2110 /*
2111  * Overrides for Emacs so that we follow Linus's tabbing style.
2112  * ---------------------------------------------------------------------------
2113  * Local variables:
2114  * c-basic-offset: 8
2115  * End:
2116  */