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
 155 // Grab parameters for the device driver
 156
 157 #if defined(module_param)                               // Showing parameters under SYSFS
 158 module_param(isocMode, int, 0444);
 159 module_param(video_debug, int, 0444);
 160 module_param(PowerOnAtOpen, int, 0444);
 161 module_param(video_nr, int, 0444);
 162 module_param(radio_nr, int, 0444);
 163 module_param(vbi_nr, int, 0444);
 164 #else                                                   // Old Style
 165 MODULE_PARAM(isocMode, "i");
 166 MODULE_PARM(video_debug, "i");                          // Grab the Debug Mode of the device driver
 167 MODULE_PARM(adjustCompression, "i");                    // Grab the compression to be adaptive
 168 MODULE_PARM(PowerOnAtOpen, "i");                        // Grab the device to power on at startup
 169 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.
 170 MODULE_PARM(video_nr, "i");                             // video_nr option allows to specify a certain /dev/videoX device (like /dev/video0 or /dev/video1 ...)
 171 MODULE_PARM(radio_nr, "i");                             // radio_nr option allows to specify a certain /dev/radioX device (like /dev/radio0 or /dev/radio1 ...)
 172 MODULE_PARM(vbi_nr, "i");                               // vbi_nr option allows to specify a certain /dev/vbiX device (like /dev/vbi0 or /dev/vbi1 ...)
 173 #endif
 174
 175 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 176 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 177 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 178 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 179 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 180 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 181
 182
 183 // Misc stuff
 184 MODULE_AUTHOR(DRIVER_AUTHOR);
 185 MODULE_DESCRIPTION(DRIVER_DESC);
 186 MODULE_LICENSE(DRIVER_LICENSE);
 187 MODULE_VERSION(USBVISION_VERSION_STRING);
 188 MODULE_ALIAS(DRIVER_ALIAS);
 189
 190
 191 /****************************************************************************************/
 192 /* SYSFS Code - Copied from the stv680.c usb module.                                    */
 193 /* Device information is located at /sys/class/video4linux/video0                       */
 194 /* Device parameters information is located at /sys/module/usbvision                    */
 195 /* Device USB Information is located at /sys/bus/usb/drivers/USBVision Video Grabber    */
 196 /****************************************************************************************/
 197
 198
 199 #define YES_NO(x) ((x) ? "Yes" : "No")
 200
 201 static inline struct usb_usbvision *cd_to_usbvision(struct class_device *cd)
 202 {
 203         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 204         return video_get_drvdata(vdev);
 205 }
 206
 207 static ssize_t show_version(struct class_device *cd, char *buf)
 208 {
 209         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 210 }
 211 static CLASS_DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 212
 213 static ssize_t show_model(struct class_device *cd, char *buf)
 214 {
 215         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 216         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 217         return sprintf(buf, "%s\n", usbvision_device_data[usbvision->DevModel].ModelString);
 218 }
 219 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 220
 221 static ssize_t show_hue(struct class_device *cd, char *buf)
 222 {
 223         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 224         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 225         struct v4l2_control ctrl;
 226         ctrl.id = V4L2_CID_HUE;
 227         ctrl.value = 0;
 228         if(usbvision->user)
 229                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 230         return sprintf(buf, "%d\n", ctrl.value);
 231 }
 232 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 233
 234 static ssize_t show_contrast(struct class_device *cd, char *buf)
 235 {
 236         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 237         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 238         struct v4l2_control ctrl;
 239         ctrl.id = V4L2_CID_CONTRAST;
 240         ctrl.value = 0;
 241         if(usbvision->user)
 242                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 243         return sprintf(buf, "%d\n", ctrl.value);
 244 }
 245 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 246
 247 static ssize_t show_brightness(struct class_device *cd, char *buf)
 248 {
 249         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 250         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 251         struct v4l2_control ctrl;
 252         ctrl.id = V4L2_CID_BRIGHTNESS;
 253         ctrl.value = 0;
 254         if(usbvision->user)
 255                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 256         return sprintf(buf, "%d\n", ctrl.value);
 257 }
 258 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 259
 260 static ssize_t show_saturation(struct class_device *cd, char *buf)
 261 {
 262         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 263         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 264         struct v4l2_control ctrl;
 265         ctrl.id = V4L2_CID_SATURATION;
 266         ctrl.value = 0;
 267         if(usbvision->user)
 268                 call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
 269         return sprintf(buf, "%d\n", ctrl.value);
 270 }
 271 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 272
 273 static ssize_t show_streaming(struct class_device *cd, char *buf)
 274 {
 275         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 276         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 277         return sprintf(buf, "%s\n", YES_NO(usbvision->streaming==Stream_On?1:0));
 278 }
 279 static CLASS_DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 280
 281 static ssize_t show_compression(struct class_device *cd, char *buf)
 282 {
 283         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 284         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 285         return sprintf(buf, "%s\n", YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 286 }
 287 static CLASS_DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 288
 289 static ssize_t show_device_bridge(struct class_device *cd, char *buf)
 290 {
 291         struct video_device *vdev = container_of(cd, struct video_device, class_dev);
 292         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 293         return sprintf(buf, "%d\n", usbvision->bridgeType);
 294 }
 295 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 296
 297 static void usbvision_create_sysfs(struct video_device *vdev)
 298 {
 299         int res;
 300         if (!vdev)
 301                 return;
 302         do {
 303                 res=class_device_create_file(&vdev->class_dev,
 304                                              &class_device_attr_version);
 305                 if (res<0)
 306                         break;
 307                 res=class_device_create_file(&vdev->class_dev,
 308                                              &class_device_attr_model);
 309                 if (res<0)
 310                         break;
 311                 res=class_device_create_file(&vdev->class_dev,
 312                                              &class_device_attr_hue);
 313                 if (res<0)
 314                         break;
 315                 res=class_device_create_file(&vdev->class_dev,
 316                                              &class_device_attr_contrast);
 317                 if (res<0)
 318                         break;
 319                 res=class_device_create_file(&vdev->class_dev,
 320                                              &class_device_attr_brightness);
 321                 if (res<0)
 322                         break;
 323                 res=class_device_create_file(&vdev->class_dev,
 324                                              &class_device_attr_saturation);
 325                 if (res<0)
 326                         break;
 327                 res=class_device_create_file(&vdev->class_dev,
 328                                              &class_device_attr_streaming);
 329                 if (res<0)
 330                         break;
 331                 res=class_device_create_file(&vdev->class_dev,
 332                                              &class_device_attr_compression);
 333                 if (res<0)
 334                         break;
 335                 res=class_device_create_file(&vdev->class_dev,
 336                                              &class_device_attr_bridge);
 337                 if (res>=0)
 338                         return;
 339         } while (0);
 340
 341         err("%s error: %d\n", __FUNCTION__, res);
 342 }
 343
 344 static void usbvision_remove_sysfs(struct video_device *vdev)
 345 {
 346         if (vdev) {
 347                 class_device_remove_file(&vdev->class_dev,
 348                                          &class_device_attr_version);
 349                 class_device_remove_file(&vdev->class_dev,
 350                                          &class_device_attr_model);
 351                 class_device_remove_file(&vdev->class_dev,
 352                                          &class_device_attr_hue);
 353                 class_device_remove_file(&vdev->class_dev,
 354                                          &class_device_attr_contrast);
 355                 class_device_remove_file(&vdev->class_dev,
 356                                          &class_device_attr_brightness);
 357                 class_device_remove_file(&vdev->class_dev,
 358                                          &class_device_attr_saturation);
 359                 class_device_remove_file(&vdev->class_dev,
 360                                          &class_device_attr_streaming);
 361                 class_device_remove_file(&vdev->class_dev,
 362                                          &class_device_attr_compression);
 363                 class_device_remove_file(&vdev->class_dev,
 364                                          &class_device_attr_bridge);
 365         }
 366 }
 367
 368
 369 /*
 370  * usbvision_open()
 371  *
 372  * This is part of Video 4 Linux API. The driver can be opened by one
 373  * client only (checks internal counter 'usbvision->user'). The procedure
 374  * then allocates buffers needed for video processing.
 375  *
 376  */
 377 static int usbvision_v4l2_open(struct inode *inode, struct file *file)
 378 {
 379         struct video_device *dev = video_devdata(file);
 380         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 381         int errCode = 0;
 382
 383         PDEBUG(DBG_IO, "open");
 384
 385
 386         usbvision_reset_powerOffTimer(usbvision);
 387
 388         if (usbvision->user)
 389                 errCode = -EBUSY;
 390         else {
 391                 /* Allocate memory for the scratch ring buffer */
 392                 errCode = usbvision_scratch_alloc(usbvision);
 393                 if (isocMode==ISOC_MODE_COMPRESS) {
 394                         /* Allocate intermediate decompression buffers only if needed */
 395                         errCode = usbvision_decompress_alloc(usbvision);
 396                 }
 397                 if (errCode) {
 398                         /* Deallocate all buffers if trouble */
 399                         usbvision_scratch_free(usbvision);
 400                         usbvision_decompress_free(usbvision);
 401                 }
 402         }
 403
 404         /* If so far no errors then we shall start the camera */
 405         if (!errCode) {
 406                 down(&usbvision->lock);
 407                 if (usbvision->power == 0) {
 408                         usbvision_power_on(usbvision);
 409                         usbvision_i2c_register(usbvision);
 410                 }
 411
 412                 /* Send init sequence only once, it's large! */
 413                 if (!usbvision->initialized) {
 414                         int setup_ok = 0;
 415                         setup_ok = usbvision_setup(usbvision,isocMode);
 416                         if (setup_ok)
 417                                 usbvision->initialized = 1;
 418                         else
 419                                 errCode = -EBUSY;
 420                 }
 421
 422                 if (!errCode) {
 423                         usbvision_begin_streaming(usbvision);
 424                         errCode = usbvision_init_isoc(usbvision);
 425                         /* device needs to be initialized before isoc transfer */
 426                         usbvision_muxsel(usbvision,0);
 427                         usbvision->user++;
 428                 }
 429                 else {
 430                         if (PowerOnAtOpen) {
 431                                 usbvision_i2c_unregister(usbvision);
 432                                 usbvision_power_off(usbvision);
 433                                 usbvision->initialized = 0;
 434                         }
 435                 }
 436                 up(&usbvision->lock);
 437         }
 438
 439         if (errCode) {
 440         }
 441
 442         /* prepare queues */
 443         usbvision_empty_framequeues(usbvision);
 444
 445         PDEBUG(DBG_IO, "success");
 446         return errCode;
 447 }
 448
 449 /*
 450  * usbvision_v4l2_close()
 451  *
 452  * This is part of Video 4 Linux API. The procedure
 453  * stops streaming and deallocates all buffers that were earlier
 454  * allocated in usbvision_v4l2_open().
 455  *
 456  */
 457 static int usbvision_v4l2_close(struct inode *inode, struct file *file)
 458 {
 459         struct video_device *dev = video_devdata(file);
 460         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 461
 462         PDEBUG(DBG_IO, "close");
 463         down(&usbvision->lock);
 464
 465         usbvision_audio_off(usbvision);
 466         usbvision_restart_isoc(usbvision);
 467         usbvision_stop_isoc(usbvision);
 468
 469         usbvision_decompress_free(usbvision);
 470         usbvision_frames_free(usbvision);
 471         usbvision_empty_framequeues(usbvision);
 472         usbvision_scratch_free(usbvision);
 473
 474         usbvision->user--;
 475
 476         if (PowerOnAtOpen) {
 477                 /* power off in a little while to avoid off/on every close/open short sequences */
 478                 usbvision_set_powerOffTimer(usbvision);
 479                 usbvision->initialized = 0;
 480         }
 481
 482         up(&usbvision->lock);
 483
 484         if (usbvision->remove_pending) {
 485                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
 486                 usbvision_release(usbvision);
 487         }
 488
 489         PDEBUG(DBG_IO, "success");
 490
 491
 492         return 0;
 493 }
 494
 495
 496 /*
 497  * usbvision_ioctl()
 498  *
 499  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 500  *
 501  */
 502 static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
 503                                  unsigned int cmd, void *arg)
 504 {
 505         struct video_device *dev = video_devdata(file);
 506         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
 507
 508         if (!USBVISION_IS_OPERATIONAL(usbvision))
 509                 return -EFAULT;
 510
 511         switch (cmd) {
 512
 513 #ifdef CONFIG_VIDEO_ADV_DEBUG
 514                 /* ioctls to allow direct acces to the NT100x registers */
 515                 case VIDIOC_DBG_G_REGISTER:
 516                 case VIDIOC_DBG_S_REGISTER:
 517                 {
 518                         struct v4l2_register *reg = arg;
 519                         int errCode;
 520
 521                         if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
 522                                 return -EINVAL;
 523                         if (!capable(CAP_SYS_ADMIN))
 524                                 return -EPERM;
 525                         /* NT100x has a 8-bit register space */
 526                         if (cmd == VIDIOC_DBG_G_REGISTER)
 527                                 errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 528                         else
 529                                 errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 530                         if (errCode < 0) {
 531                                 err("%s: VIDIOC_DBG_%c_REGISTER failed: error %d", __FUNCTION__,
 532                                     cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S', errCode);
 533                                 return errCode;
 534                         }
 535                         if (cmd == VIDIOC_DBG_S_REGISTER)
 536                                 reg->val = (u8)errCode;
 537
 538                         PDEBUG(DBG_IOCTL, "VIDIOC_DBG_%c_REGISTER reg=0x%02X, value=0x%02X",
 539                                cmd == VIDIOC_DBG_G_REGISTER ? 'G' : 'S',
 540                                (unsigned int)reg->reg, (unsigned int)reg->val);
 541                         return 0;
 542                 }
 543 #endif
 544                 case VIDIOC_QUERYCAP:
 545                 {
 546                         struct v4l2_capability *vc=arg;
 547
 548                         memset(vc, 0, sizeof(*vc));
 549                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 550                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
 551                                 sizeof(vc->card));
 552                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
 553                                 sizeof(vc->bus_info));
 554                         vc->version = USBVISION_DRIVER_VERSION;
 555                         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 556                                 V4L2_CAP_AUDIO |
 557                                 V4L2_CAP_READWRITE |
 558                                 V4L2_CAP_STREAMING |
 559                                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 560                         PDEBUG(DBG_IOCTL, "VIDIOC_QUERYCAP");
 561                         return 0;
 562                 }
 563                 case VIDIOC_ENUMINPUT:
 564                 {
 565                         struct v4l2_input *vi = arg;
 566                         int chan;
 567
 568                         if ((vi->index >= usbvision->video_inputs) || (vi->index < 0) )
 569                                 return -EINVAL;
 570                         if (usbvision->have_tuner) {
 571                                 chan = vi->index;
 572                         }
 573                         else {
 574                                 chan = vi->index + 1; //skip Television string
 575                         }
 576                         switch(chan) {
 577                                 case 0:
 578                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 579                                                 strcpy(vi->name, "White Video Input");
 580                                         }
 581                                         else {
 582                                                 strcpy(vi->name, "Television");
 583                                                 vi->type = V4L2_INPUT_TYPE_TUNER;
 584                                                 vi->audioset = 1;
 585                                                 vi->tuner = chan;
 586                                                 vi->std = V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM;
 587                                         }
 588                                         break;
 589                                 case 1:
 590                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 591                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 592                                                 strcpy(vi->name, "Green Video Input");
 593                                         }
 594                                         else {
 595                                                 strcpy(vi->name, "Composite Video Input");
 596                                         }
 597                                         vi->std = V4L2_STD_PAL;
 598                                         break;
 599                                 case 2:
 600                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 601                                         if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 602                                                 strcpy(vi->name, "Yellow Video Input");
 603                                         }
 604                                         else {
 605                                         strcpy(vi->name, "S-Video Input");
 606                                         }
 607                                         vi->std = V4L2_STD_PAL;
 608                                         break;
 609                                 case 3:
 610                                         vi->type = V4L2_INPUT_TYPE_CAMERA;
 611                                         strcpy(vi->name, "Red Video Input");
 612                                         vi->std = V4L2_STD_PAL;
 613                                         break;
 614                         }
 615                         PDEBUG(DBG_IOCTL, "VIDIOC_ENUMINPUT name=%s:%d tuners=%d type=%d norm=%x",
 616                                vi->name, vi->index, vi->tuner,vi->type,(int)vi->std);
 617                         return 0;
 618                 }
 619                 case VIDIOC_ENUMSTD:
 620                 {
 621                         struct v4l2_standard *e = arg;
 622                         unsigned int i;
 623                         int ret;
 624
 625                         i = e->index;
 626                         if (i >= TVNORMS)
 627                                 return -EINVAL;
 628                         ret = v4l2_video_std_construct(e, tvnorms[e->index].id,
 629                                                        tvnorms[e->index].name);
 630                         e->index = i;
 631                         if (ret < 0)
 632                                 return ret;
 633                         return 0;
 634                 }
 635                 case VIDIOC_G_INPUT:
 636                 {
 637                         int *input = arg;
 638                         *input = usbvision->ctl_input;
 639                         return 0;
 640                 }
 641                 case VIDIOC_S_INPUT:
 642                 {
 643                         int *input = arg;
 644                         if ((*input >= usbvision->video_inputs) || (*input < 0) )
 645                                 return -EINVAL;
 646                         usbvision->ctl_input = *input;
 647
 648                         down(&usbvision->lock);
 649                         usbvision_muxsel(usbvision, usbvision->ctl_input);
 650                         usbvision_set_input(usbvision);
 651                         usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight);
 652                         up(&usbvision->lock);
 653                         return 0;
 654                 }
 655                 case VIDIOC_G_STD:
 656                 {
 657                         v4l2_std_id *id = arg;
 658
 659                         *id = usbvision->tvnorm->id;
 660
 661                         PDEBUG(DBG_IOCTL, "VIDIOC_G_STD std_id=%s", usbvision->tvnorm->name);
 662                         return 0;
 663                 }
 664                 case VIDIOC_S_STD:
 665                 {
 666                         v4l2_std_id *id = arg;
 667                         unsigned int i;
 668
 669                         for (i = 0; i < TVNORMS; i++)
 670                                 if (*id == tvnorms[i].id)
 671                                         break;
 672                         if (i == TVNORMS)
 673                                 for (i = 0; i < TVNORMS; i++)
 674                                         if (*id & tvnorms[i].id)
 675                                                 break;
 676                         if (i == TVNORMS)
 677                                 return -EINVAL;
 678
 679                         down(&usbvision->lock);
 680                         usbvision->tvnorm = &tvnorms[i];
 681
 682                         call_i2c_clients(usbvision, VIDIOC_S_STD,
 683                                          &usbvision->tvnorm->id);
 684
 685                         up(&usbvision->lock);
 686
 687                         PDEBUG(DBG_IOCTL, "VIDIOC_S_STD std_id=%s", usbvision->tvnorm->name);
 688                         return 0;
 689                 }
 690                 case VIDIOC_G_TUNER:
 691                 {
 692                         struct v4l2_tuner *vt = arg;
 693
 694                         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 695                                 return -EINVAL;
 696                         strcpy(vt->name, "Television");
 697                         /* Let clients fill in the remainder of this struct */
 698                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,vt);
 699
 700                         PDEBUG(DBG_IOCTL, "VIDIOC_G_TUNER signal=%x, afc=%x",vt->signal,vt->afc);
 701                         return 0;
 702                 }
 703                 case VIDIOC_S_TUNER:
 704                 {
 705                         struct v4l2_tuner *vt = arg;
 706
 707                         // Only no or one tuner for now
 708                         if (!usbvision->have_tuner || vt->index)
 709                                 return -EINVAL;
 710                         /* let clients handle this */
 711                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
 712
 713                         PDEBUG(DBG_IOCTL, "VIDIOC_S_TUNER");
 714                         return 0;
 715                 }
 716                 case VIDIOC_G_FREQUENCY:
 717                 {
 718                         struct v4l2_frequency *freq = arg;
 719
 720                         freq->tuner = 0; // Only one tuner
 721                         freq->type = V4L2_TUNER_ANALOG_TV;
 722                         freq->frequency = usbvision->freq;
 723                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 724                         return 0;
 725                 }
 726                 case VIDIOC_S_FREQUENCY:
 727                 {
 728                         struct v4l2_frequency *freq = arg;
 729
 730                         // Only no or one tuner for now
 731                         if (!usbvision->have_tuner || freq->tuner)
 732                                 return -EINVAL;
 733
 734                         usbvision->freq = freq->frequency;
 735                         call_i2c_clients(usbvision, cmd, freq);
 736                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)freq->frequency);
 737                         return 0;
 738                 }
 739                 case VIDIOC_G_AUDIO:
 740                 {
 741                         struct v4l2_audio *v = arg;
 742                         memset(v,0, sizeof(v));
 743                         strcpy(v->name, "TV");
 744                         PDEBUG(DBG_IOCTL, "VIDIOC_G_AUDIO");
 745                         return 0;
 746                 }
 747                 case VIDIOC_S_AUDIO:
 748                 {
 749                         struct v4l2_audio *v = arg;
 750                         if(v->index) {
 751                                 return -EINVAL;
 752                         }
 753                         PDEBUG(DBG_IOCTL, "VIDIOC_S_AUDIO");
 754                         return 0;
 755                 }
 756                 case VIDIOC_QUERYCTRL:
 757                 {
 758                         struct v4l2_queryctrl *ctrl = arg;
 759                         int id=ctrl->id;
 760
 761                         memset(ctrl,0,sizeof(*ctrl));
 762                         ctrl->id=id;
 763
 764                         call_i2c_clients(usbvision, cmd, arg);
 765
 766                         if (ctrl->type)
 767                                 return 0;
 768                         else
 769                                 return -EINVAL;
 770
 771                         PDEBUG(DBG_IOCTL,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
 772                 }
 773                 case VIDIOC_G_CTRL:
 774                 {
 775                         struct v4l2_control *ctrl = arg;
 776                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
 777                         PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 778                         return 0;
 779                 }
 780                 case VIDIOC_S_CTRL:
 781                 {
 782                         struct v4l2_control *ctrl = arg;
 783
 784                         PDEBUG(DBG_IOCTL, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
 785                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
 786                         return 0;
 787                 }
 788                 case VIDIOC_REQBUFS:
 789                 {
 790                         struct v4l2_requestbuffers *vr = arg;
 791                         int ret;
 792
 793                         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 794
 795                         // Check input validity : the user must do a VIDEO CAPTURE and MMAP method.
 796                         if((vr->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) ||
 797                            (vr->memory != V4L2_MEMORY_MMAP))
 798                                 return -EINVAL;
 799
 800                         if(usbvision->streaming == Stream_On) {
 801                                 if ((ret = usbvision_stream_interrupt(usbvision)))
 802                                     return ret;
 803                         }
 804
 805                         usbvision_frames_free(usbvision);
 806                         usbvision_empty_framequeues(usbvision);
 807                         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 808
 809                         usbvision->curFrame = NULL;
 810
 811                         PDEBUG(DBG_IOCTL, "VIDIOC_REQBUFS count=%d",vr->count);
 812                         return 0;
 813                 }
 814                 case VIDIOC_QUERYBUF:
 815                 {
 816                         struct v4l2_buffer *vb = arg;
 817                         struct usbvision_frame *frame;
 818
 819                         // FIXME : must control that buffers are mapped (VIDIOC_REQBUFS has been called)
 820
 821                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 822                                 return -EINVAL;
 823                         }
 824                         if(vb->index>=usbvision->num_frames)  {
 825                                 return -EINVAL;
 826                         }
 827                         // Updating the corresponding frame state
 828                         vb->flags = 0;
 829                         frame = &usbvision->frame[vb->index];
 830                         if(frame->grabstate >= FrameState_Ready)
 831                                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 832                         if(frame->grabstate >= FrameState_Done)
 833                                 vb->flags |= V4L2_BUF_FLAG_DONE;
 834                         if(frame->grabstate == FrameState_Unused)
 835                                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 836                         vb->memory = V4L2_MEMORY_MMAP;
 837
 838                         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 839
 840                         vb->memory = V4L2_MEMORY_MMAP;
 841                         vb->field = V4L2_FIELD_NONE;
 842                         vb->length = usbvision->curwidth*usbvision->curheight*usbvision->palette.bytes_per_pixel;
 843                         vb->timestamp = usbvision->frame[vb->index].timestamp;
 844                         vb->sequence = usbvision->frame[vb->index].sequence;
 845                         return 0;
 846                 }
 847                 case VIDIOC_QBUF:
 848                 {
 849                         struct v4l2_buffer *vb = arg;
 850                         struct usbvision_frame *frame;
 851                         unsigned long lock_flags;
 852
 853                         // FIXME : works only on VIDEO_CAPTURE MODE, MMAP.
 854                         if(vb->type != V4L2_CAP_VIDEO_CAPTURE) {
 855                                 return -EINVAL;
 856                         }
 857                         if(vb->index>=usbvision->num_frames)  {
 858                                 return -EINVAL;
 859                         }
 860
 861                         frame = &usbvision->frame[vb->index];
 862
 863                         if (frame->grabstate != FrameState_Unused) {
 864                                 return -EAGAIN;
 865                         }
 866
 867                         /* Mark it as ready and enqueue frame */
 868                         frame->grabstate = FrameState_Ready;
 869                         frame->scanstate = ScanState_Scanning;
 870                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 871
 872                         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 873
 874                         /* set v4l2_format index */
 875                         frame->v4l2_format = usbvision->palette;
 876
 877                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 878                         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 879                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 880
 881                         PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
 882                         return 0;
 883                 }
 884                 case VIDIOC_DQBUF:
 885                 {
 886                         struct v4l2_buffer *vb = arg;
 887                         int ret;
 888                         struct usbvision_frame *f;
 889                         unsigned long lock_flags;
 890
 891                         if (vb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 892                                 return -EINVAL;
 893
 894                         if (list_empty(&(usbvision->outqueue))) {
 895                                 if (usbvision->streaming == Stream_Idle)
 896                                         return -EINVAL;
 897                                 ret = wait_event_interruptible
 898                                         (usbvision->wait_frame,
 899                                          !list_empty(&(usbvision->outqueue)));
 900                                 if (ret)
 901                                         return ret;
 902                         }
 903
 904                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 905                         f = list_entry(usbvision->outqueue.next,
 906                                        struct usbvision_frame, frame);
 907                         list_del(usbvision->outqueue.next);
 908                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 909
 910                         f->grabstate = FrameState_Unused;
 911
 912                         vb->memory = V4L2_MEMORY_MMAP;
 913                         vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
 914                         vb->index = f->index;
 915                         vb->sequence = f->sequence;
 916                         vb->timestamp = f->timestamp;
 917                         vb->field = V4L2_FIELD_NONE;
 918                         vb->bytesused = f->scanlength;
 919
 920                         return 0;
 921                 }
 922                 case VIDIOC_STREAMON:
 923                 {
 924                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 925
 926                         usbvision->streaming = Stream_On;
 927
 928                         call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
 929
 930                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
 931
 932                         return 0;
 933                 }
 934                 case VIDIOC_STREAMOFF:
 935                 {
 936                         int *type = arg;
 937                         int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
 938
 939                         if (*type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 940                                 return -EINVAL;
 941
 942                         if(usbvision->streaming == Stream_On) {
 943                                 usbvision_stream_interrupt(usbvision);
 944                                 // Stop all video streamings
 945                                 call_i2c_clients(usbvision,VIDIOC_STREAMOFF , &b);
 946                         }
 947                         usbvision_empty_framequeues(usbvision);
 948
 949                         PDEBUG(DBG_IOCTL, "VIDIOC_STREAMOFF");
 950                         return 0;
 951                 }
 952                 case VIDIOC_ENUM_FMT:
 953                 {
 954                         struct v4l2_fmtdesc *vfd = arg;
 955
 956                         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 957                                 return -EINVAL;
 958                         }
 959                         vfd->flags = 0;
 960                         vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 961                         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 962                         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 963                         memset(vfd->reserved, 0, sizeof(vfd->reserved));
 964                         return 0;
 965                 }
 966                 case VIDIOC_G_FMT:
 967                 {
 968                         struct v4l2_format *vf = arg;
 969
 970                         switch (vf->type) {
 971                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 972                                 {
 973                                         vf->fmt.pix.width = usbvision->curwidth;
 974                                         vf->fmt.pix.height = usbvision->curheight;
 975                                         vf->fmt.pix.pixelformat = usbvision->palette.format;
 976                                         vf->fmt.pix.bytesperline =  usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 977                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 978                                         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 979                                         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 980                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d, format=%s",
 981                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
 982                                         return 0;
 983                                 }
 984                                 default:
 985                                         PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
 986                                         return -EINVAL;
 987                         }
 988                         return 0;
 989                 }
 990                 case VIDIOC_TRY_FMT:
 991                 case VIDIOC_S_FMT:
 992                 {
 993                         struct v4l2_format *vf = arg;
 994                         int formatIdx,ret;
 995
 996                         switch(vf->type) {
 997                                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 998                                 {
 999                                         /* Find requested format in available ones */
1000                                         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
1001                                                 if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
1002                                                         usbvision->palette = usbvision_v4l2_format[formatIdx];
1003                                                         break;
1004                                                 }
1005                                         }
1006                                         /* robustness */
1007                                         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
1008                                                 return -EINVAL;
1009                                         }
1010                                         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
1011                                         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
1012
1013                                         vf->fmt.pix.bytesperline = vf->fmt.pix.width*usbvision->palette.bytes_per_pixel;
1014                                         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
1015
1016                                         if(cmd == VIDIOC_TRY_FMT) {
1017                                                 PDEBUG(DBG_IOCTL, "VIDIOC_TRY_FMT grabdisplay w=%d, h=%d, format=%s",
1018                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1019                                                 return 0;
1020                                         }
1021
1022                                         /* stop io in case it is already in progress */
1023                                         if(usbvision->streaming == Stream_On) {
1024                                                 if ((ret = usbvision_stream_interrupt(usbvision)))
1025                                                         return ret;
1026                                         }
1027                                         usbvision_frames_free(usbvision);
1028                                         usbvision_empty_framequeues(usbvision);
1029
1030                                         usbvision->curFrame = NULL;
1031
1032                                         // by now we are committed to the new data...
1033                                         down(&usbvision->lock);
1034                                         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
1035                                         up(&usbvision->lock);
1036
1037                                         PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
1038                                                vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
1039                                         return 0;
1040                                 }
1041                                 default:
1042                                         return -EINVAL;
1043                         }
1044                 }
1045                 default:
1046                         return -ENOIOCTLCMD;
1047         }
1048         return 0;
1049 }
1050
1051 static int usbvision_v4l2_ioctl(struct inode *inode, struct file *file,
1052                        unsigned int cmd, unsigned long arg)
1053 {
1054         return video_usercopy(inode, file, cmd, arg, usbvision_v4l2_do_ioctl);
1055 }
1056
1057
1058 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1059                       size_t count, loff_t *ppos)
1060 {
1061         struct video_device *dev = video_devdata(file);
1062         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1063         int noblock = file->f_flags & O_NONBLOCK;
1064         unsigned long lock_flags;
1065
1066         int ret,i;
1067         struct usbvision_frame *frame;
1068
1069         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
1070
1071         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1072                 return -EFAULT;
1073
1074         /* This entry point is compatible with the mmap routines so that a user can do either
1075            VIDIOC_QBUF/VIDIOC_DQBUF to get frames or call read on the device. */
1076         if(!usbvision->num_frames) {
1077                 /* First, allocate some frames to work with if this has not been done with
1078                  VIDIOC_REQBUF */
1079                 usbvision_frames_free(usbvision);
1080                 usbvision_empty_framequeues(usbvision);
1081                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1082         }
1083
1084         if(usbvision->streaming != Stream_On) {
1085                 /* no stream is running, make it running ! */
1086                 usbvision->streaming = Stream_On;
1087                 call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
1088         }
1089
1090         /* Then, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
1091         for(i=0;i<usbvision->num_frames;i++) {
1092                 frame = &usbvision->frame[i];
1093                 if(frame->grabstate == FrameState_Unused) {
1094                         /* Mark it as ready and enqueue frame */
1095                         frame->grabstate = FrameState_Ready;
1096                         frame->scanstate = ScanState_Scanning;
1097                         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
1098
1099                         /* set v4l2_format index */
1100                         frame->v4l2_format = usbvision->palette;
1101
1102                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1103                         list_add_tail(&frame->frame, &usbvision->inqueue);
1104                         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1105                 }
1106         }
1107
1108         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1109         if (list_empty(&(usbvision->outqueue))) {
1110                 if(noblock)
1111                         return -EAGAIN;
1112
1113                 ret = wait_event_interruptible
1114                         (usbvision->wait_frame,
1115                          !list_empty(&(usbvision->outqueue)));
1116                 if (ret)
1117                         return ret;
1118         }
1119
1120         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1121         frame = list_entry(usbvision->outqueue.next,
1122                            struct usbvision_frame, frame);
1123         list_del(usbvision->outqueue.next);
1124         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1125
1126         /* An error returns an empty frame */
1127         if (frame->grabstate == FrameState_Error) {
1128                 frame->bytes_read = 0;
1129                 return 0;
1130         }
1131
1132         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
1133                        frame->index, frame->bytes_read, frame->scanlength);
1134
1135         /* copy bytes to user space; we allow for partials reads */
1136         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1137                 count = frame->scanlength - frame->bytes_read;
1138
1139         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1140                 return -EFAULT;
1141         }
1142
1143         frame->bytes_read += count;
1144         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
1145                        (unsigned long)count, frame->bytes_read);
1146
1147         // For now, forget the frame if it has not been read in one shot.
1148 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1149                 frame->bytes_read = 0;
1150
1151                 /* Mark it as available to be used again. */
1152                 frame->grabstate = FrameState_Unused;
1153 /*      } */
1154
1155         return count;
1156 }
1157
1158 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1159 {
1160         unsigned long size = vma->vm_end - vma->vm_start,
1161                 start = vma->vm_start;
1162         void *pos;
1163         u32 i;
1164
1165         struct video_device *dev = video_devdata(file);
1166         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1167
1168         PDEBUG(DBG_MMAP, "mmap");
1169
1170         down(&usbvision->lock);
1171
1172         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1173                 up(&usbvision->lock);
1174                 return -EFAULT;
1175         }
1176
1177         if (!(vma->vm_flags & VM_WRITE) ||
1178             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1179                 up(&usbvision->lock);
1180                 return -EINVAL;
1181         }
1182
1183         for (i = 0; i < usbvision->num_frames; i++) {
1184                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == vma->vm_pgoff)
1185                         break;
1186         }
1187         if (i == usbvision->num_frames) {
1188                 PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range");
1189                 up(&usbvision->lock);
1190                 return -EINVAL;
1191         }
1192
1193         /* VM_IO is eventually going to replace PageReserved altogether */
1194         vma->vm_flags |= VM_IO;
1195         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1196
1197         pos = usbvision->frame[i].data;
1198         while (size > 0) {
1199
1200                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1201                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1202                         up(&usbvision->lock);
1203                         return -EAGAIN;
1204                 }
1205                 start += PAGE_SIZE;
1206                 pos += PAGE_SIZE;
1207                 size -= PAGE_SIZE;
1208         }
1209
1210         up(&usbvision->lock);
1211         return 0;
1212 }
1213
1214
1215 /*
1216  * Here comes the stuff for radio on usbvision based devices
1217  *
1218  */
1219 static int usbvision_radio_open(struct inode *inode, struct file *file)
1220 {
1221         struct video_device *dev = video_devdata(file);
1222         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1223         struct v4l2_frequency freq;
1224         int errCode = 0;
1225
1226         PDEBUG(DBG_IO, "%s:", __FUNCTION__);
1227
1228         down(&usbvision->lock);
1229
1230         if (usbvision->user) {
1231                 err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__);
1232                 errCode = -EBUSY;
1233         }
1234         else {
1235                 if(PowerOnAtOpen) {
1236                         usbvision_reset_powerOffTimer(usbvision);
1237                         if (usbvision->power == 0) {
1238                                 usbvision_power_on(usbvision);
1239                                 usbvision_i2c_register(usbvision);
1240                         }
1241                 }
1242
1243                 /* Alternate interface 1 is is the biggest frame size */
1244                 errCode = usbvision_set_alternate(usbvision);
1245                 if (errCode < 0) {
1246                         usbvision->last_error = errCode;
1247                         return -EBUSY;
1248                 }
1249
1250                 // If so far no errors then we shall start the radio
1251                 usbvision->radio = 1;
1252                 call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
1253                 freq.frequency = 1517; //SWR3 @ 94.8MHz
1254                 call_i2c_clients(usbvision, VIDIOC_S_FREQUENCY, &freq);
1255                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1256                 usbvision->user++;
1257         }
1258
1259         if (errCode) {
1260                 if (PowerOnAtOpen) {
1261                         usbvision_i2c_unregister(usbvision);
1262                         usbvision_power_off(usbvision);
1263                         usbvision->initialized = 0;
1264                 }
1265         }
1266         up(&usbvision->lock);
1267         return errCode;
1268 }
1269
1270
1271 static int usbvision_radio_close(struct inode *inode, struct file *file)
1272 {
1273         struct video_device *dev = video_devdata(file);
1274         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1275         int errCode = 0;
1276
1277         PDEBUG(DBG_IO, "");
1278
1279         down(&usbvision->lock);
1280
1281         /* Set packet size to 0 */
1282         usbvision->ifaceAlt=0;
1283         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1284                                     usbvision->ifaceAlt);
1285
1286         usbvision_audio_off(usbvision);
1287         usbvision->radio=0;
1288         usbvision->user--;
1289
1290         if (PowerOnAtOpen) {
1291                 usbvision_set_powerOffTimer(usbvision);
1292                 usbvision->initialized = 0;
1293         }
1294
1295         up(&usbvision->lock);
1296
1297         if (usbvision->remove_pending) {
1298                 printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__);
1299                 usbvision_release(usbvision);
1300         }
1301
1302
1303         PDEBUG(DBG_IO, "success");
1304
1305         return errCode;
1306 }
1307
1308 static int usbvision_do_radio_ioctl(struct inode *inode, struct file *file,
1309                                  unsigned int cmd, void *arg)
1310 {
1311         struct video_device *dev = video_devdata(file);
1312         struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
1313
1314         if (!USBVISION_IS_OPERATIONAL(usbvision))
1315                 return -EIO;
1316
1317         switch (cmd) {
1318                 case VIDIOC_QUERYCAP:
1319                 {
1320                         struct v4l2_capability *vc=arg;
1321
1322                         memset(vc, 0, sizeof(*vc));
1323                         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
1324                         strlcpy(vc->card, usbvision_device_data[usbvision->DevModel].ModelString,
1325                                 sizeof(vc->card));
1326                         strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
1327                                 sizeof(vc->bus_info));
1328                         vc->version = USBVISION_DRIVER_VERSION;
1329                         vc->capabilities = (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
1330                         PDEBUG(DBG_IO, "VIDIOC_QUERYCAP");
1331                         return 0;
1332                 }
1333                 case VIDIOC_QUERYCTRL:
1334                 {
1335                         struct v4l2_queryctrl *ctrl = arg;
1336                         int id=ctrl->id;
1337
1338                         memset(ctrl,0,sizeof(*ctrl));
1339                         ctrl->id=id;
1340
1341                         call_i2c_clients(usbvision, cmd, arg);
1342                         PDEBUG(DBG_IO,"VIDIOC_QUERYCTRL id=%x value=%x",ctrl->id,ctrl->type);
1343
1344                         if (ctrl->type)
1345                                 return 0;
1346                         else
1347                                 return -EINVAL;
1348
1349                 }
1350                 case VIDIOC_G_CTRL:
1351                 {
1352                         struct v4l2_control *ctrl = arg;
1353
1354                         call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
1355                         PDEBUG(DBG_IO,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1356                         return 0;
1357                 }
1358                 case VIDIOC_S_CTRL:
1359                 {
1360                         struct v4l2_control *ctrl = arg;
1361
1362                         call_i2c_clients(usbvision, VIDIOC_S_CTRL, ctrl);
1363                         PDEBUG(DBG_IO, "VIDIOC_S_CTRL id=%x value=%x",ctrl->id,ctrl->value);
1364                         return 0;
1365                 }
1366                 case VIDIOC_G_TUNER:
1367                 {
1368                         struct v4l2_tuner *t = arg;
1369
1370                         if (t->index > 0)
1371                                 return -EINVAL;
1372
1373                         memset(t,0,sizeof(*t));
1374                         strcpy(t->name, "Radio");
1375                         t->type = V4L2_TUNER_RADIO;
1376
1377                         /* Let clients fill in the remainder of this struct */
1378                         call_i2c_clients(usbvision,VIDIOC_G_TUNER,t);
1379                         PDEBUG(DBG_IO, "VIDIOC_G_TUNER signal=%x, afc=%x",t->signal,t->afc);
1380                         return 0;
1381                 }
1382                 case VIDIOC_S_TUNER:
1383                 {
1384                         struct v4l2_tuner *vt = arg;
1385
1386                         // Only no or one tuner for now
1387                         if (!usbvision->have_tuner || vt->index)
1388                                 return -EINVAL;
1389                         /* let clients handle this */
1390                         call_i2c_clients(usbvision,VIDIOC_S_TUNER,vt);
1391
1392                         PDEBUG(DBG_IO, "VIDIOC_S_TUNER");
1393                         return 0;
1394                 }
1395                 case VIDIOC_G_AUDIO:
1396                 {
1397                         struct v4l2_audio *a = arg;
1398
1399                         memset(a,0,sizeof(*a));
1400                         strcpy(a->name,"Radio");
1401                         PDEBUG(DBG_IO, "VIDIOC_G_AUDIO");
1402                         return 0;
1403                 }
1404                 case VIDIOC_S_AUDIO:
1405                 case VIDIOC_S_INPUT:
1406                 case VIDIOC_S_STD:
1407                 return 0;
1408
1409                 case VIDIOC_G_FREQUENCY:
1410                 {
1411                         struct v4l2_frequency *f = arg;
1412
1413                         memset(f,0,sizeof(*f));
1414
1415                         f->type = V4L2_TUNER_RADIO;
1416                         f->frequency = usbvision->freq;
1417                         call_i2c_clients(usbvision, cmd, f);
1418                         PDEBUG(DBG_IO, "VIDIOC_G_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1419
1420                         return 0;
1421                 }
1422                 case VIDIOC_S_FREQUENCY:
1423                 {
1424                         struct v4l2_frequency *f = arg;
1425
1426                         if (f->tuner != 0)
1427                                 return -EINVAL;
1428                         usbvision->freq = f->frequency;
1429                         call_i2c_clients(usbvision, cmd, f);
1430                         PDEBUG(DBG_IO, "VIDIOC_S_FREQUENCY freq=0x%X", (unsigned)f->frequency);
1431
1432                         return 0;
1433                 }
1434                 default:
1435                 {
1436                         PDEBUG(DBG_IO, "%s: Unknown command %x", __FUNCTION__, cmd);
1437                         return -ENOIOCTLCMD;
1438                 }
1439         }
1440         return 0;
1441 }
1442
1443
1444 static int usbvision_radio_ioctl(struct inode *inode, struct file *file,
1445                        unsigned int cmd, unsigned long arg)
1446 {
1447         return video_usercopy(inode, file, cmd, arg, usbvision_do_radio_ioctl);
1448 }
1449
1450
1451 /*
1452  * Here comes the stuff for vbi on usbvision based devices
1453  *
1454  */
1455 static int usbvision_vbi_open(struct inode *inode, struct file *file)
1456 {
1457         /* TODO */
1458         return -EINVAL;
1459
1460 }
1461
1462 static int usbvision_vbi_close(struct inode *inode, struct file *file)
1463 {
1464         /* TODO */
1465         return -EINVAL;
1466 }
1467
1468 static int usbvision_do_vbi_ioctl(struct inode *inode, struct file *file,
1469                                  unsigned int cmd, void *arg)
1470 {
1471         /* TODO */
1472         return -EINVAL;
1473 }
1474
1475 static int usbvision_vbi_ioctl(struct inode *inode, struct file *file,
1476                        unsigned int cmd, unsigned long arg)
1477 {
1478         return video_usercopy(inode, file, cmd, arg, usbvision_do_vbi_ioctl);
1479 }
1480
1481
1482 //
1483 // Video registration stuff
1484 //
1485
1486 // Video template
1487 static const struct file_operations usbvision_fops = {
1488         .owner             = THIS_MODULE,
1489         .open           = usbvision_v4l2_open,
1490         .release        = usbvision_v4l2_close,
1491         .read           = usbvision_v4l2_read,
1492         .mmap           = usbvision_v4l2_mmap,
1493         .ioctl          = usbvision_v4l2_ioctl,
1494         .llseek         = no_llseek,
1495 };
1496 static struct video_device usbvision_video_template = {
1497         .owner             = THIS_MODULE,
1498         .type           = VID_TYPE_TUNER | VID_TYPE_CAPTURE,
1499         .hardware       = VID_HARDWARE_USBVISION,
1500         .fops           = &usbvision_fops,
1501         .name           = "usbvision-video",
1502         .release        = video_device_release,
1503         .minor          = -1,
1504 };
1505
1506
1507 // Radio template
1508 static const struct file_operations usbvision_radio_fops = {
1509         .owner             = THIS_MODULE,
1510         .open           = usbvision_radio_open,
1511         .release        = usbvision_radio_close,
1512         .ioctl          = usbvision_radio_ioctl,
1513         .llseek         = no_llseek,
1514 };
1515
1516 static struct video_device usbvision_radio_template=
1517 {
1518         .owner             = THIS_MODULE,
1519         .type           = VID_TYPE_TUNER,
1520         .hardware       = VID_HARDWARE_USBVISION,
1521         .fops           = &usbvision_radio_fops,
1522         .release        = video_device_release,
1523         .name           = "usbvision-radio",
1524         .minor          = -1,
1525 };
1526
1527
1528 // vbi template
1529 static const struct file_operations usbvision_vbi_fops = {
1530         .owner             = THIS_MODULE,
1531         .open           = usbvision_vbi_open,
1532         .release        = usbvision_vbi_close,
1533         .ioctl          = usbvision_vbi_ioctl,
1534         .llseek         = no_llseek,
1535 };
1536
1537 static struct video_device usbvision_vbi_template=
1538 {
1539         .owner             = THIS_MODULE,
1540         .type           = VID_TYPE_TUNER,
1541         .hardware       = VID_HARDWARE_USBVISION,
1542         .fops           = &usbvision_vbi_fops,
1543         .release        = video_device_release,
1544         .name           = "usbvision-vbi",
1545         .minor          = -1,
1546 };
1547
1548
1549 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1550                                         struct video_device *vdev_template,
1551                                         char *name)
1552 {
1553         struct usb_device *usb_dev = usbvision->dev;
1554         struct video_device *vdev;
1555
1556         if (usb_dev == NULL) {
1557                 err("%s: usbvision->dev is not set", __FUNCTION__);
1558                 return NULL;
1559         }
1560
1561         vdev = video_device_alloc();
1562         if (NULL == vdev) {
1563                 return NULL;
1564         }
1565         *vdev = *vdev_template;
1566 //      vdev->minor   = -1;
1567         vdev->dev     = &usb_dev->dev;
1568         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1569         video_set_drvdata(vdev, usbvision);
1570         return vdev;
1571 }
1572
1573 // unregister video4linux devices
1574 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1575 {
1576         // vbi Device:
1577         if (usbvision->vbi) {
1578                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]", usbvision->vbi->minor & 0x1f);
1579                 if (usbvision->vbi->minor != -1) {
1580                         video_unregister_device(usbvision->vbi);
1581                 }
1582                 else {
1583                         video_device_release(usbvision->vbi);
1584                 }
1585                 usbvision->vbi = NULL;
1586         }
1587
1588         // Radio Device:
1589         if (usbvision->rdev) {
1590                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]", usbvision->rdev->minor & 0x1f);
1591                 if (usbvision->rdev->minor != -1) {
1592                         video_unregister_device(usbvision->rdev);
1593                 }
1594                 else {
1595                         video_device_release(usbvision->rdev);
1596                 }
1597                 usbvision->rdev = NULL;
1598         }
1599
1600         // Video Device:
1601         if (usbvision->vdev) {
1602                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]", usbvision->vdev->minor & 0x1f);
1603                 if (usbvision->vdev->minor != -1) {
1604                         video_unregister_device(usbvision->vdev);
1605                 }
1606                 else {
1607                         video_device_release(usbvision->vdev);
1608                 }
1609                 usbvision->vdev = NULL;
1610         }
1611 }
1612
1613 // register video4linux devices
1614 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1615 {
1616         // Video Device:
1617         usbvision->vdev = usbvision_vdev_init(usbvision, &usbvision_video_template, "USBVision Video");
1618         if (usbvision->vdev == NULL) {
1619                 goto err_exit;
1620         }
1621         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr)<0) {
1622                 goto err_exit;
1623         }
1624         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n", usbvision->nr,usbvision->vdev->minor & 0x1f);
1625
1626         // Radio Device:
1627         if (usbvision_device_data[usbvision->DevModel].Radio) {
1628                 // usbvision has radio
1629                 usbvision->rdev = usbvision_vdev_init(usbvision, &usbvision_radio_template, "USBVision Radio");
1630                 if (usbvision->rdev == NULL) {
1631                         goto err_exit;
1632                 }
1633                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr)<0) {
1634                         goto err_exit;
1635                 }
1636                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n", usbvision->nr, usbvision->rdev->minor & 0x1f);
1637         }
1638         // vbi Device:
1639         if (usbvision_device_data[usbvision->DevModel].vbi) {
1640                 usbvision->vbi = usbvision_vdev_init(usbvision, &usbvision_vbi_template, "USBVision VBI");
1641                 if (usbvision->vdev == NULL) {
1642                         goto err_exit;
1643                 }
1644                 if (video_register_device(usbvision->vbi, VFL_TYPE_VBI, vbi_nr)<0) {
1645                         goto err_exit;
1646                 }
1647                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n", usbvision->nr,usbvision->vbi->minor & 0x1f);
1648         }
1649         // all done
1650         return 0;
1651
1652  err_exit:
1653         err("USBVision[%d]: video_register_device() failed", usbvision->nr);
1654         usbvision_unregister_video(usbvision);
1655         return -1;
1656 }
1657
1658 /*
1659  * usbvision_alloc()
1660  *
1661  * This code allocates the struct usb_usbvision. It is filled with default values.
1662  *
1663  * Returns NULL on error, a pointer to usb_usbvision else.
1664  *
1665  */
1666 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev)
1667 {
1668         struct usb_usbvision *usbvision;
1669
1670         if ((usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL)) == NULL) {
1671                 goto err_exit;
1672         }
1673
1674         usbvision->dev = dev;
1675
1676         init_MUTEX(&usbvision->lock);   /* to 1 == available */
1677
1678         // prepare control urb for control messages during interrupts
1679         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1680         if (usbvision->ctrlUrb == NULL) {
1681                 goto err_exit;
1682         }
1683         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1684         init_MUTEX(&usbvision->ctrlUrbLock);    /* to 1 == available */
1685
1686         usbvision_init_powerOffTimer(usbvision);
1687
1688         return usbvision;
1689
1690 err_exit:
1691         if (usbvision && usbvision->ctrlUrb) {
1692                 usb_free_urb(usbvision->ctrlUrb);
1693         }
1694         if (usbvision) {
1695                 kfree(usbvision);
1696         }
1697         return NULL;
1698 }
1699
1700 /*
1701  * usbvision_release()
1702  *
1703  * This code does final release of struct usb_usbvision. This happens
1704  * after the device is disconnected -and- all clients closed their files.
1705  *
1706  */
1707 static void usbvision_release(struct usb_usbvision *usbvision)
1708 {
1709         PDEBUG(DBG_PROBE, "");
1710
1711         down(&usbvision->lock);
1712
1713         usbvision_reset_powerOffTimer(usbvision);
1714
1715         usbvision->initialized = 0;
1716
1717         up(&usbvision->lock);
1718
1719         usbvision_remove_sysfs(usbvision->vdev);
1720         usbvision_unregister_video(usbvision);
1721
1722         if (usbvision->ctrlUrb) {
1723                 usb_free_urb(usbvision->ctrlUrb);
1724         }
1725
1726         kfree(usbvision);
1727
1728         PDEBUG(DBG_PROBE, "success");
1729 }
1730
1731
1732 /******************************** usb interface *****************************************/
1733
1734 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1735 {
1736         int model,i;
1737
1738         if (usbvision == NULL)
1739                 return;
1740
1741         model = usbvision->DevModel;
1742         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1743
1744         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1745                 usbvision->Vin_Reg2_Preset = usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1746         } else {
1747                 usbvision->Vin_Reg2_Preset = 0;
1748         }
1749
1750         for (i = 0; i < TVNORMS; i++)
1751                 if (usbvision_device_data[model].VideoNorm == tvnorms[i].mode)
1752                         break;
1753         if (i == TVNORMS)
1754                 i = 0;
1755         usbvision->tvnorm = &tvnorms[i];        /* set default norm */
1756
1757         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1758         usbvision->ctl_input = 0;
1759
1760         /* This should be here to make i2c clients to be able to register */
1761         usbvision_audio_off(usbvision); //first switch off audio
1762         if (!PowerOnAtOpen) {
1763                 usbvision_power_on(usbvision);  //and then power up the noisy tuner
1764                 usbvision_i2c_register(usbvision);
1765         }
1766 }
1767
1768 /*
1769  * usbvision_probe()
1770  *
1771  * This procedure queries device descriptor and accepts the interface
1772  * if it looks like USBVISION video device
1773  *
1774  */
1775 static int __devinit usbvision_probe(struct usb_interface *intf,
1776                                      const struct usb_device_id *devid)
1777 {
1778         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1779         struct usb_interface *uif;
1780         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1781         const struct usb_host_interface *interface;
1782         struct usb_usbvision *usbvision = NULL;
1783         const struct usb_endpoint_descriptor *endpoint;
1784         int model,i;
1785
1786         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1787                                 dev->descriptor.idVendor,
1788                                 dev->descriptor.idProduct, ifnum);
1789
1790         model = devid->driver_info;
1791         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1792                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1793                 return -ENODEV;
1794         }
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         if ((usbvision = usbvision_alloc(dev)) == NULL) {
1816                 err("%s: couldn't allocate USBVision struct", __FUNCTION__);
1817                 return -ENOMEM;
1818         }
1819
1820         if (dev->descriptor.bNumConfigurations > 1) {
1821                 usbvision->bridgeType = BRIDGE_NT1004;
1822         }
1823         else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1824                 usbvision->bridgeType = BRIDGE_NT1005;
1825         }
1826         else {
1827                 usbvision->bridgeType = BRIDGE_NT1003;
1828         }
1829         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1830
1831         down(&usbvision->lock);
1832
1833         /* compute alternate max packet sizes */
1834         uif = dev->actconfig->interface[0];
1835
1836         usbvision->num_alt=uif->num_altsetting;
1837         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1838         usbvision->alt_max_pkt_size = kmalloc(32*
1839                                               usbvision->num_alt,GFP_KERNEL);
1840         if (usbvision->alt_max_pkt_size == NULL) {
1841                 err("usbvision: out of memory!\n");
1842                 return -ENOMEM;
1843         }
1844
1845         for (i = 0; i < usbvision->num_alt ; i++) {
1846                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1847                                       wMaxPacketSize);
1848                 usbvision->alt_max_pkt_size[i] =
1849                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1850                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1851                        usbvision->alt_max_pkt_size[i]);
1852         }
1853
1854
1855         usbvision->nr = usbvision_nr++;
1856
1857         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1858         if (usbvision->have_tuner) {
1859                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1860         }
1861
1862         usbvision->tuner_addr = ADDR_UNSET;
1863
1864         usbvision->DevModel = model;
1865         usbvision->remove_pending = 0;
1866         usbvision->iface = ifnum;
1867         usbvision->ifaceAlt = 0;
1868         usbvision->video_endp = endpoint->bEndpointAddress;
1869         usbvision->isocPacketSize = 0;
1870         usbvision->usb_bandwidth = 0;
1871         usbvision->user = 0;
1872         usbvision->streaming = Stream_Off;
1873         usbvision_register_video(usbvision);
1874         usbvision_configure_video(usbvision);
1875         up(&usbvision->lock);
1876
1877
1878         usb_set_intfdata (intf, usbvision);
1879         usbvision_create_sysfs(usbvision->vdev);
1880
1881         PDEBUG(DBG_PROBE, "success");
1882         return 0;
1883 }
1884
1885
1886 /*
1887  * usbvision_disconnect()
1888  *
1889  * This procedure stops all driver activity, deallocates interface-private
1890  * structure (pointed by 'ptr') and after that driver should be removable
1891  * with no ill consequences.
1892  *
1893  */
1894 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1895 {
1896         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1897
1898         PDEBUG(DBG_PROBE, "");
1899
1900         if (usbvision == NULL) {
1901                 err("%s: usb_get_intfdata() failed", __FUNCTION__);
1902                 return;
1903         }
1904         usb_set_intfdata (intf, NULL);
1905
1906         down(&usbvision->lock);
1907
1908         // At this time we ask to cancel outstanding URBs
1909         usbvision_stop_isoc(usbvision);
1910
1911         if (usbvision->power) {
1912                 usbvision_i2c_unregister(usbvision);
1913                 usbvision_power_off(usbvision);
1914         }
1915         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1916
1917         usb_put_dev(usbvision->dev);
1918         usbvision->dev = NULL;  // USB device is no more
1919
1920         up(&usbvision->lock);
1921
1922         if (usbvision->user) {
1923                 printk(KERN_INFO "%s: In use, disconnect pending\n", __FUNCTION__);
1924                 wake_up_interruptible(&usbvision->wait_frame);
1925                 wake_up_interruptible(&usbvision->wait_stream);
1926         }
1927         else {
1928                 usbvision_release(usbvision);
1929         }
1930
1931         PDEBUG(DBG_PROBE, "success");
1932
1933 }
1934
1935 static struct usb_driver usbvision_driver = {
1936         .name           = "usbvision",
1937         .id_table       = usbvision_table,
1938         .probe          = usbvision_probe,
1939         .disconnect     = usbvision_disconnect
1940 };
1941
1942 /*
1943  * usbvision_init()
1944  *
1945  * This code is run to initialize the driver.
1946  *
1947  */
1948 static int __init usbvision_init(void)
1949 {
1950         int errCode;
1951
1952         PDEBUG(DBG_PROBE, "");
1953
1954         PDEBUG(DBG_IOCTL, "IOCTL   debugging is enabled [video]");
1955         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1956         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1957         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1958
1959         /* disable planar mode support unless compression enabled */
1960         if (isocMode != ISOC_MODE_COMPRESS ) {
1961                 // FIXME : not the right way to set supported flag
1962                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1963                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1964         }
1965
1966         errCode = usb_register(&usbvision_driver);
1967
1968         if (errCode == 0) {
1969                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1970                 PDEBUG(DBG_PROBE, "success");
1971         }
1972         return errCode;
1973 }
1974
1975 static void __exit usbvision_exit(void)
1976 {
1977  PDEBUG(DBG_PROBE, "");
1978
1979  usb_deregister(&usbvision_driver);
1980  PDEBUG(DBG_PROBE, "success");
1981 }
1982
1983 module_init(usbvision_init);
1984 module_exit(usbvision_exit);
1985
1986 /*
1987  * Overrides for Emacs so that we follow Linus's tabbing style.
1988  * ---------------------------------------------------------------------------
1989  * Local variables:
1990  * c-basic-offset: 8
1991  * End:
1992  */