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

   1 /*
   2  * USB USBVISION Video device driver 0.9.10
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/version.h>
  49 #include <linux/kernel.h>
  50 #include <linux/list.h>
  51 #include <linux/timer.h>
  52 #include <linux/slab.h>
  53 #include <linux/smp_lock.h>
  54 #include <linux/mm.h>
  55 #include <linux/highmem.h>
  56 #include <linux/vmalloc.h>
  57 #include <linux/module.h>
  58 #include <linux/init.h>
  59 #include <linux/spinlock.h>
  60 #include <asm/io.h>
  61 #include <linux/videodev2.h>
  62 #include <linux/i2c.h>
  63
  64 #include <media/saa7115.h>
  65 #include <media/v4l2-common.h>
  66 #include <media/v4l2-ioctl.h>
  67 #include <media/tuner.h>
  68
  69 #include <linux/workqueue.h>
  70
  71 #include "usbvision.h"
  72 #include "usbvision-cards.h"
  73
  74 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  75  Dwaine Garden <DwaineGarden@rogers.com>"
  76 #define DRIVER_NAME "usbvision"
  77 #define DRIVER_ALIAS "USBVision"
  78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  79 #define DRIVER_LICENSE "GPL"
  80 #define USBVISION_DRIVER_VERSION_MAJOR 0
  81 #define USBVISION_DRIVER_VERSION_MINOR 9
  82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
  83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  84 USBVISION_DRIVER_VERSION_MINOR,\
  85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  87  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  88  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  89
  90 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  91
  92
  93 #ifdef USBVISION_DEBUG
  94         #define PDEBUG(level, fmt, args...) { \
  95                 if (video_debug & (level)) \
  96                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  97                                 __func__, __LINE__ , ## args); \
  98         }
  99 #else
 100         #define PDEBUG(level, fmt, args...) do {} while(0)
 101 #endif
 102
 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 /* sequential number of usbvision device */
 113 static int usbvision_nr;
 114
 115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 116         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 117         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 118         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 119         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 120         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 121         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 122         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 123         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 124 };
 125
 126 /* Function prototypes */
 127 static void usbvision_release(struct usb_usbvision *usbvision);
 128
 129 /* Default initialization of device driver parameters */
 130 /* Set the default format for ISOC endpoint */
 131 static int isocMode = ISOC_MODE_COMPRESS;
 132 /* Set the default Debug Mode of the device driver */
 133 static int video_debug;
 134 /* Set the default device to power on at startup */
 135 static int PowerOnAtOpen = 1;
 136 /* Sequential Number of Video Device */
 137 static int video_nr = -1;
 138 /* Sequential Number of Radio Device */
 139 static int radio_nr = -1;
 140 /* Sequential Number of VBI Device */
 141 static int vbi_nr = -1;
 142
 143 /* Grab parameters for the device driver */
 144
 145 /* Showing parameters under SYSFS */
 146 module_param(isocMode, int, 0444);
 147 module_param(video_debug, int, 0444);
 148 module_param(PowerOnAtOpen, int, 0444);
 149 module_param(video_nr, int, 0444);
 150 module_param(radio_nr, int, 0444);
 151 module_param(vbi_nr, int, 0444);
 152
 153 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 154 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 155 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 156 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 157 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 158 MODULE_PARM_DESC(vbi_nr, "Set vbi device number (/dev/vbiX).  Default: -1 (autodetect)");
 159
 160
 161 // Misc stuff
 162 MODULE_AUTHOR(DRIVER_AUTHOR);
 163 MODULE_DESCRIPTION(DRIVER_DESC);
 164 MODULE_LICENSE(DRIVER_LICENSE);
 165 MODULE_VERSION(USBVISION_VERSION_STRING);
 166 MODULE_ALIAS(DRIVER_ALIAS);
 167
 168
 169 /*****************************************************************************/
 170 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 171 /* Device information is located at /sys/class/video4linux/video0            */
 172 /* Device parameters information is located at /sys/module/usbvision         */
 173 /* Device USB Information is located at                                      */
 174 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 175 /*****************************************************************************/
 176
 177 #define YES_NO(x) ((x) ? "Yes" : "No")
 178
 179 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 180 {
 181         struct video_device *vdev =
 182                 container_of(cd, struct video_device, dev);
 183         return video_get_drvdata(vdev);
 184 }
 185
 186 static ssize_t show_version(struct device *cd,
 187                             struct device_attribute *attr, char *buf)
 188 {
 189         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 190 }
 191 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 192
 193 static ssize_t show_model(struct device *cd,
 194                           struct device_attribute *attr, char *buf)
 195 {
 196         struct video_device *vdev =
 197                 container_of(cd, struct video_device, dev);
 198         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 199         return sprintf(buf, "%s\n",
 200                        usbvision_device_data[usbvision->DevModel].ModelString);
 201 }
 202 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 203
 204 static ssize_t show_hue(struct device *cd,
 205                         struct device_attribute *attr, char *buf)
 206 {
 207         struct video_device *vdev =
 208                 container_of(cd, struct video_device, dev);
 209         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 210         struct v4l2_control ctrl;
 211         ctrl.id = V4L2_CID_HUE;
 212         ctrl.value = 0;
 213         if(usbvision->user)
 214                 call_all(usbvision, core, g_ctrl, &ctrl);
 215         return sprintf(buf, "%d\n", ctrl.value);
 216 }
 217 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 218
 219 static ssize_t show_contrast(struct device *cd,
 220                              struct device_attribute *attr, char *buf)
 221 {
 222         struct video_device *vdev =
 223                 container_of(cd, struct video_device, dev);
 224         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 225         struct v4l2_control ctrl;
 226         ctrl.id = V4L2_CID_CONTRAST;
 227         ctrl.value = 0;
 228         if(usbvision->user)
 229                 call_all(usbvision, core, g_ctrl, &ctrl);
 230         return sprintf(buf, "%d\n", ctrl.value);
 231 }
 232 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 233
 234 static ssize_t show_brightness(struct device *cd,
 235                                struct device_attribute *attr, char *buf)
 236 {
 237         struct video_device *vdev =
 238                 container_of(cd, struct video_device, dev);
 239         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 240         struct v4l2_control ctrl;
 241         ctrl.id = V4L2_CID_BRIGHTNESS;
 242         ctrl.value = 0;
 243         if(usbvision->user)
 244                 call_all(usbvision, core, g_ctrl, &ctrl);
 245         return sprintf(buf, "%d\n", ctrl.value);
 246 }
 247 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 248
 249 static ssize_t show_saturation(struct device *cd,
 250                                struct device_attribute *attr, char *buf)
 251 {
 252         struct video_device *vdev =
 253                 container_of(cd, struct video_device, dev);
 254         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 255         struct v4l2_control ctrl;
 256         ctrl.id = V4L2_CID_SATURATION;
 257         ctrl.value = 0;
 258         if(usbvision->user)
 259                 call_all(usbvision, core, g_ctrl, &ctrl);
 260         return sprintf(buf, "%d\n", ctrl.value);
 261 }
 262 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 263
 264 static ssize_t show_streaming(struct device *cd,
 265                               struct device_attribute *attr, char *buf)
 266 {
 267         struct video_device *vdev =
 268                 container_of(cd, struct video_device, dev);
 269         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 270         return sprintf(buf, "%s\n",
 271                        YES_NO(usbvision->streaming==Stream_On?1:0));
 272 }
 273 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 274
 275 static ssize_t show_compression(struct device *cd,
 276                                 struct device_attribute *attr, char *buf)
 277 {
 278         struct video_device *vdev =
 279                 container_of(cd, struct video_device, dev);
 280         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 281         return sprintf(buf, "%s\n",
 282                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 283 }
 284 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 285
 286 static ssize_t show_device_bridge(struct device *cd,
 287                                   struct device_attribute *attr, char *buf)
 288 {
 289         struct video_device *vdev =
 290                 container_of(cd, struct video_device, dev);
 291         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 292         return sprintf(buf, "%d\n", usbvision->bridgeType);
 293 }
 294 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 295
 296 static void usbvision_create_sysfs(struct video_device *vdev)
 297 {
 298         int res;
 299         if (!vdev)
 300                 return;
 301         do {
 302                 res = device_create_file(&vdev->dev, &dev_attr_version);
 303                 if (res<0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_model);
 306                 if (res<0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 309                 if (res<0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 312                 if (res<0)
 313                         break;
 314                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 315                 if (res<0)
 316                         break;
 317                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 318                 if (res<0)
 319                         break;
 320                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 321                 if (res<0)
 322                         break;
 323                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 324                 if (res<0)
 325                         break;
 326                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 327                 if (res>=0)
 328                         return;
 329         } while (0);
 330
 331         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 332 }
 333
 334 static void usbvision_remove_sysfs(struct video_device *vdev)
 335 {
 336         if (vdev) {
 337                 device_remove_file(&vdev->dev, &dev_attr_version);
 338                 device_remove_file(&vdev->dev, &dev_attr_model);
 339                 device_remove_file(&vdev->dev, &dev_attr_hue);
 340                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 341                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 342                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 343                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 344                 device_remove_file(&vdev->dev, &dev_attr_compression);
 345                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 346         }
 347 }
 348
 349 /*
 350  * usbvision_open()
 351  *
 352  * This is part of Video 4 Linux API. The driver can be opened by one
 353  * client only (checks internal counter 'usbvision->user'). The procedure
 354  * then allocates buffers needed for video processing.
 355  *
 356  */
 357 static int usbvision_v4l2_open(struct file *file)
 358 {
 359         struct usb_usbvision *usbvision = video_drvdata(file);
 360         int errCode = 0;
 361
 362         PDEBUG(DBG_IO, "open");
 363
 364         lock_kernel();
 365         usbvision_reset_powerOffTimer(usbvision);
 366
 367         if (usbvision->user)
 368                 errCode = -EBUSY;
 369         else {
 370                 /* Allocate memory for the scratch ring buffer */
 371                 errCode = usbvision_scratch_alloc(usbvision);
 372                 if (isocMode==ISOC_MODE_COMPRESS) {
 373                         /* Allocate intermediate decompression buffers
 374                            only if needed */
 375                         errCode = usbvision_decompress_alloc(usbvision);
 376                 }
 377                 if (errCode) {
 378                         /* Deallocate all buffers if trouble */
 379                         usbvision_scratch_free(usbvision);
 380                         usbvision_decompress_free(usbvision);
 381                 }
 382         }
 383
 384         /* If so far no errors then we shall start the camera */
 385         if (!errCode) {
 386                 mutex_lock(&usbvision->lock);
 387                 if (usbvision->power == 0) {
 388                         usbvision_power_on(usbvision);
 389                         usbvision_i2c_register(usbvision);
 390                 }
 391
 392                 /* Send init sequence only once, it's large! */
 393                 if (!usbvision->initialized) {
 394                         int setup_ok = 0;
 395                         setup_ok = usbvision_setup(usbvision,isocMode);
 396                         if (setup_ok)
 397                                 usbvision->initialized = 1;
 398                         else
 399                                 errCode = -EBUSY;
 400                 }
 401
 402                 if (!errCode) {
 403                         usbvision_begin_streaming(usbvision);
 404                         errCode = usbvision_init_isoc(usbvision);
 405                         /* device must be initialized before isoc transfer */
 406                         usbvision_muxsel(usbvision,0);
 407                         usbvision->user++;
 408                 } else {
 409                         if (PowerOnAtOpen) {
 410                                 usbvision_i2c_unregister(usbvision);
 411                                 usbvision_power_off(usbvision);
 412                                 usbvision->initialized = 0;
 413                         }
 414                 }
 415                 mutex_unlock(&usbvision->lock);
 416         }
 417
 418         /* prepare queues */
 419         usbvision_empty_framequeues(usbvision);
 420
 421         PDEBUG(DBG_IO, "success");
 422         unlock_kernel();
 423         return errCode;
 424 }
 425
 426 /*
 427  * usbvision_v4l2_close()
 428  *
 429  * This is part of Video 4 Linux API. The procedure
 430  * stops streaming and deallocates all buffers that were earlier
 431  * allocated in usbvision_v4l2_open().
 432  *
 433  */
 434 static int usbvision_v4l2_close(struct file *file)
 435 {
 436         struct usb_usbvision *usbvision = video_drvdata(file);
 437
 438         PDEBUG(DBG_IO, "close");
 439         mutex_lock(&usbvision->lock);
 440
 441         usbvision_audio_off(usbvision);
 442         usbvision_restart_isoc(usbvision);
 443         usbvision_stop_isoc(usbvision);
 444
 445         usbvision_decompress_free(usbvision);
 446         usbvision_frames_free(usbvision);
 447         usbvision_empty_framequeues(usbvision);
 448         usbvision_scratch_free(usbvision);
 449
 450         usbvision->user--;
 451
 452         if (PowerOnAtOpen) {
 453                 /* power off in a little while
 454                    to avoid off/on every close/open short sequences */
 455                 usbvision_set_powerOffTimer(usbvision);
 456                 usbvision->initialized = 0;
 457         }
 458
 459         mutex_unlock(&usbvision->lock);
 460
 461         if (usbvision->remove_pending) {
 462                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 463                 usbvision_release(usbvision);
 464         }
 465
 466         PDEBUG(DBG_IO, "success");
 467         return 0;
 468 }
 469
 470
 471 /*
 472  * usbvision_ioctl()
 473  *
 474  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 475  *
 476  */
 477 #ifdef CONFIG_VIDEO_ADV_DEBUG
 478 static int vidioc_g_register (struct file *file, void *priv,
 479                                 struct v4l2_dbg_register *reg)
 480 {
 481         struct usb_usbvision *usbvision = video_drvdata(file);
 482         int errCode;
 483
 484         if (!v4l2_chip_match_host(&reg->match))
 485                 return -EINVAL;
 486         /* NT100x has a 8-bit register space */
 487         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 488         if (errCode < 0) {
 489                 dev_err(&usbvision->vdev->dev,
 490                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 491                                 __func__, errCode);
 492                 return errCode;
 493         }
 494         reg->val = errCode;
 495         reg->size = 1;
 496         return 0;
 497 }
 498
 499 static int vidioc_s_register (struct file *file, void *priv,
 500                                 struct v4l2_dbg_register *reg)
 501 {
 502         struct usb_usbvision *usbvision = video_drvdata(file);
 503         int errCode;
 504
 505         if (!v4l2_chip_match_host(&reg->match))
 506                 return -EINVAL;
 507         /* NT100x has a 8-bit register space */
 508         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 509         if (errCode < 0) {
 510                 dev_err(&usbvision->vdev->dev,
 511                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 512                                 __func__, errCode);
 513                 return errCode;
 514         }
 515         return 0;
 516 }
 517 #endif
 518
 519 static int vidioc_querycap (struct file *file, void  *priv,
 520                                         struct v4l2_capability *vc)
 521 {
 522         struct usb_usbvision *usbvision = video_drvdata(file);
 523
 524         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 525         strlcpy(vc->card,
 526                 usbvision_device_data[usbvision->DevModel].ModelString,
 527                 sizeof(vc->card));
 528         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 529         vc->version = USBVISION_DRIVER_VERSION;
 530         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 531                 V4L2_CAP_AUDIO |
 532                 V4L2_CAP_READWRITE |
 533                 V4L2_CAP_STREAMING |
 534                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 535         return 0;
 536 }
 537
 538 static int vidioc_enum_input (struct file *file, void *priv,
 539                                 struct v4l2_input *vi)
 540 {
 541         struct usb_usbvision *usbvision = video_drvdata(file);
 542         int chan;
 543
 544         if (vi->index >= usbvision->video_inputs)
 545                 return -EINVAL;
 546         if (usbvision->have_tuner) {
 547                 chan = vi->index;
 548         } else {
 549                 chan = vi->index + 1; /*skip Television string*/
 550         }
 551         /* Determine the requested input characteristics
 552            specific for each usbvision card model */
 553         switch(chan) {
 554         case 0:
 555                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 556                         strcpy(vi->name, "White Video Input");
 557                 } else {
 558                         strcpy(vi->name, "Television");
 559                         vi->type = V4L2_INPUT_TYPE_TUNER;
 560                         vi->audioset = 1;
 561                         vi->tuner = chan;
 562                         vi->std = USBVISION_NORMS;
 563                 }
 564                 break;
 565         case 1:
 566                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 567                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 568                         strcpy(vi->name, "Green Video Input");
 569                 } else {
 570                         strcpy(vi->name, "Composite Video Input");
 571                 }
 572                 vi->std = V4L2_STD_PAL;
 573                 break;
 574         case 2:
 575                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 576                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 577                         strcpy(vi->name, "Yellow Video Input");
 578                 } else {
 579                         strcpy(vi->name, "S-Video Input");
 580                 }
 581                 vi->std = V4L2_STD_PAL;
 582                 break;
 583         case 3:
 584                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 585                 strcpy(vi->name, "Red Video Input");
 586                 vi->std = V4L2_STD_PAL;
 587                 break;
 588         }
 589         return 0;
 590 }
 591
 592 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 593 {
 594         struct usb_usbvision *usbvision = video_drvdata(file);
 595
 596         *input = usbvision->ctl_input;
 597         return 0;
 598 }
 599
 600 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 601 {
 602         struct usb_usbvision *usbvision = video_drvdata(file);
 603
 604         if ((input >= usbvision->video_inputs) || (input < 0) )
 605                 return -EINVAL;
 606
 607         mutex_lock(&usbvision->lock);
 608         usbvision_muxsel(usbvision, input);
 609         usbvision_set_input(usbvision);
 610         usbvision_set_output(usbvision,
 611                              usbvision->curwidth,
 612                              usbvision->curheight);
 613         mutex_unlock(&usbvision->lock);
 614         return 0;
 615 }
 616
 617 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 618 {
 619         struct usb_usbvision *usbvision = video_drvdata(file);
 620
 621         usbvision->tvnormId=*id;
 622
 623         mutex_lock(&usbvision->lock);
 624         call_all(usbvision, core, s_std, usbvision->tvnormId);
 625         mutex_unlock(&usbvision->lock);
 626         /* propagate the change to the decoder */
 627         usbvision_muxsel(usbvision, usbvision->ctl_input);
 628
 629         return 0;
 630 }
 631
 632 static int vidioc_g_tuner (struct file *file, void *priv,
 633                                 struct v4l2_tuner *vt)
 634 {
 635         struct usb_usbvision *usbvision = video_drvdata(file);
 636
 637         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 638                 return -EINVAL;
 639         if(usbvision->radio) {
 640                 strcpy(vt->name, "Radio");
 641                 vt->type = V4L2_TUNER_RADIO;
 642         } else {
 643                 strcpy(vt->name, "Television");
 644         }
 645         /* Let clients fill in the remainder of this struct */
 646         call_all(usbvision, tuner, g_tuner, vt);
 647
 648         return 0;
 649 }
 650
 651 static int vidioc_s_tuner (struct file *file, void *priv,
 652                                 struct v4l2_tuner *vt)
 653 {
 654         struct usb_usbvision *usbvision = video_drvdata(file);
 655
 656         // Only no or one tuner for now
 657         if (!usbvision->have_tuner || vt->index)
 658                 return -EINVAL;
 659         /* let clients handle this */
 660         call_all(usbvision, tuner, s_tuner, vt);
 661
 662         return 0;
 663 }
 664
 665 static int vidioc_g_frequency (struct file *file, void *priv,
 666                                 struct v4l2_frequency *freq)
 667 {
 668         struct usb_usbvision *usbvision = video_drvdata(file);
 669
 670         freq->tuner = 0; // Only one tuner
 671         if(usbvision->radio) {
 672                 freq->type = V4L2_TUNER_RADIO;
 673         } else {
 674                 freq->type = V4L2_TUNER_ANALOG_TV;
 675         }
 676         freq->frequency = usbvision->freq;
 677
 678         return 0;
 679 }
 680
 681 static int vidioc_s_frequency (struct file *file, void *priv,
 682                                 struct v4l2_frequency *freq)
 683 {
 684         struct usb_usbvision *usbvision = video_drvdata(file);
 685
 686         // Only no or one tuner for now
 687         if (!usbvision->have_tuner || freq->tuner)
 688                 return -EINVAL;
 689
 690         usbvision->freq = freq->frequency;
 691         call_all(usbvision, tuner, s_frequency, freq);
 692
 693         return 0;
 694 }
 695
 696 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 697 {
 698         struct usb_usbvision *usbvision = video_drvdata(file);
 699
 700         if(usbvision->radio) {
 701                 strcpy(a->name,"Radio");
 702         } else {
 703                 strcpy(a->name, "TV");
 704         }
 705
 706         return 0;
 707 }
 708
 709 static int vidioc_s_audio (struct file *file, void *fh,
 710                           struct v4l2_audio *a)
 711 {
 712         if(a->index) {
 713                 return -EINVAL;
 714         }
 715
 716         return 0;
 717 }
 718
 719 static int vidioc_queryctrl (struct file *file, void *priv,
 720                             struct v4l2_queryctrl *ctrl)
 721 {
 722         struct usb_usbvision *usbvision = video_drvdata(file);
 723
 724         call_all(usbvision, core, queryctrl, ctrl);
 725
 726         if (!ctrl->type)
 727                 return -EINVAL;
 728
 729         return 0;
 730 }
 731
 732 static int vidioc_g_ctrl (struct file *file, void *priv,
 733                                 struct v4l2_control *ctrl)
 734 {
 735         struct usb_usbvision *usbvision = video_drvdata(file);
 736         call_all(usbvision, core, g_ctrl, ctrl);
 737
 738         return 0;
 739 }
 740
 741 static int vidioc_s_ctrl (struct file *file, void *priv,
 742                                 struct v4l2_control *ctrl)
 743 {
 744         struct usb_usbvision *usbvision = video_drvdata(file);
 745         call_all(usbvision, core, s_ctrl, ctrl);
 746
 747         return 0;
 748 }
 749
 750 static int vidioc_reqbufs (struct file *file,
 751                            void *priv, struct v4l2_requestbuffers *vr)
 752 {
 753         struct usb_usbvision *usbvision = video_drvdata(file);
 754         int ret;
 755
 756         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 757
 758         /* Check input validity:
 759            the user must do a VIDEO CAPTURE and MMAP method. */
 760         if (vr->memory != V4L2_MEMORY_MMAP)
 761                 return -EINVAL;
 762
 763         if(usbvision->streaming == Stream_On) {
 764                 if ((ret = usbvision_stream_interrupt(usbvision)))
 765                         return ret;
 766         }
 767
 768         usbvision_frames_free(usbvision);
 769         usbvision_empty_framequeues(usbvision);
 770         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 771
 772         usbvision->curFrame = NULL;
 773
 774         return 0;
 775 }
 776
 777 static int vidioc_querybuf (struct file *file,
 778                             void *priv, struct v4l2_buffer *vb)
 779 {
 780         struct usb_usbvision *usbvision = video_drvdata(file);
 781         struct usbvision_frame *frame;
 782
 783         /* FIXME : must control
 784            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 785         if(vb->index>=usbvision->num_frames)  {
 786                 return -EINVAL;
 787         }
 788         /* Updating the corresponding frame state */
 789         vb->flags = 0;
 790         frame = &usbvision->frame[vb->index];
 791         if(frame->grabstate >= FrameState_Ready)
 792                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 793         if(frame->grabstate >= FrameState_Done)
 794                 vb->flags |= V4L2_BUF_FLAG_DONE;
 795         if(frame->grabstate == FrameState_Unused)
 796                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 797         vb->memory = V4L2_MEMORY_MMAP;
 798
 799         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 800
 801         vb->memory = V4L2_MEMORY_MMAP;
 802         vb->field = V4L2_FIELD_NONE;
 803         vb->length = usbvision->curwidth*
 804                 usbvision->curheight*
 805                 usbvision->palette.bytes_per_pixel;
 806         vb->timestamp = usbvision->frame[vb->index].timestamp;
 807         vb->sequence = usbvision->frame[vb->index].sequence;
 808         return 0;
 809 }
 810
 811 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 812 {
 813         struct usb_usbvision *usbvision = video_drvdata(file);
 814         struct usbvision_frame *frame;
 815         unsigned long lock_flags;
 816
 817         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 818         if(vb->index>=usbvision->num_frames)  {
 819                 return -EINVAL;
 820         }
 821
 822         frame = &usbvision->frame[vb->index];
 823
 824         if (frame->grabstate != FrameState_Unused) {
 825                 return -EAGAIN;
 826         }
 827
 828         /* Mark it as ready and enqueue frame */
 829         frame->grabstate = FrameState_Ready;
 830         frame->scanstate = ScanState_Scanning;
 831         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 832
 833         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 834
 835         /* set v4l2_format index */
 836         frame->v4l2_format = usbvision->palette;
 837
 838         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 839         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 840         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 841
 842         return 0;
 843 }
 844
 845 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 846 {
 847         struct usb_usbvision *usbvision = video_drvdata(file);
 848         int ret;
 849         struct usbvision_frame *f;
 850         unsigned long lock_flags;
 851
 852         if (list_empty(&(usbvision->outqueue))) {
 853                 if (usbvision->streaming == Stream_Idle)
 854                         return -EINVAL;
 855                 ret = wait_event_interruptible
 856                         (usbvision->wait_frame,
 857                          !list_empty(&(usbvision->outqueue)));
 858                 if (ret)
 859                         return ret;
 860         }
 861
 862         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 863         f = list_entry(usbvision->outqueue.next,
 864                        struct usbvision_frame, frame);
 865         list_del(usbvision->outqueue.next);
 866         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 867
 868         f->grabstate = FrameState_Unused;
 869
 870         vb->memory = V4L2_MEMORY_MMAP;
 871         vb->flags = V4L2_BUF_FLAG_MAPPED |
 872                 V4L2_BUF_FLAG_QUEUED |
 873                 V4L2_BUF_FLAG_DONE;
 874         vb->index = f->index;
 875         vb->sequence = f->sequence;
 876         vb->timestamp = f->timestamp;
 877         vb->field = V4L2_FIELD_NONE;
 878         vb->bytesused = f->scanlength;
 879
 880         return 0;
 881 }
 882
 883 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 884 {
 885         struct usb_usbvision *usbvision = video_drvdata(file);
 886
 887         usbvision->streaming = Stream_On;
 888         call_all(usbvision, video, s_stream, 1);
 889
 890         return 0;
 891 }
 892
 893 static int vidioc_streamoff(struct file *file,
 894                             void *priv, enum v4l2_buf_type type)
 895 {
 896         struct usb_usbvision *usbvision = video_drvdata(file);
 897
 898         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 899                 return -EINVAL;
 900
 901         if(usbvision->streaming == Stream_On) {
 902                 usbvision_stream_interrupt(usbvision);
 903                 /* Stop all video streamings */
 904                 call_all(usbvision, video, s_stream, 0);
 905         }
 906         usbvision_empty_framequeues(usbvision);
 907
 908         return 0;
 909 }
 910
 911 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 912                                         struct v4l2_fmtdesc *vfd)
 913 {
 914         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 915                 return -EINVAL;
 916         }
 917         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 918         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 919         return 0;
 920 }
 921
 922 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 923                                         struct v4l2_format *vf)
 924 {
 925         struct usb_usbvision *usbvision = video_drvdata(file);
 926         vf->fmt.pix.width = usbvision->curwidth;
 927         vf->fmt.pix.height = usbvision->curheight;
 928         vf->fmt.pix.pixelformat = usbvision->palette.format;
 929         vf->fmt.pix.bytesperline =
 930                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 931         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 932         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 933         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 934
 935         return 0;
 936 }
 937
 938 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 939                                struct v4l2_format *vf)
 940 {
 941         struct usb_usbvision *usbvision = video_drvdata(file);
 942         int formatIdx;
 943
 944         /* Find requested format in available ones */
 945         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 946                 if(vf->fmt.pix.pixelformat ==
 947                    usbvision_v4l2_format[formatIdx].format) {
 948                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 949                         break;
 950                 }
 951         }
 952         /* robustness */
 953         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 954                 return -EINVAL;
 955         }
 956         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 957         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 958
 959         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 960                 usbvision->palette.bytes_per_pixel;
 961         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 962
 963         return 0;
 964 }
 965
 966 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 967                                struct v4l2_format *vf)
 968 {
 969         struct usb_usbvision *usbvision = video_drvdata(file);
 970         int ret;
 971
 972         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
 973                 return ret;
 974         }
 975
 976         /* stop io in case it is already in progress */
 977         if(usbvision->streaming == Stream_On) {
 978                 if ((ret = usbvision_stream_interrupt(usbvision)))
 979                         return ret;
 980         }
 981         usbvision_frames_free(usbvision);
 982         usbvision_empty_framequeues(usbvision);
 983
 984         usbvision->curFrame = NULL;
 985
 986         /* by now we are committed to the new data... */
 987         mutex_lock(&usbvision->lock);
 988         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 989         mutex_unlock(&usbvision->lock);
 990
 991         return 0;
 992 }
 993
 994 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
 995                       size_t count, loff_t *ppos)
 996 {
 997         struct usb_usbvision *usbvision = video_drvdata(file);
 998         int noblock = file->f_flags & O_NONBLOCK;
 999         unsigned long lock_flags;
1000
1001         int ret,i;
1002         struct usbvision_frame *frame;
1003
1004         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
1005                (unsigned long)count, noblock);
1006
1007         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1008                 return -EFAULT;
1009
1010         /* This entry point is compatible with the mmap routines
1011            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1012            to get frames or call read on the device. */
1013         if(!usbvision->num_frames) {
1014                 /* First, allocate some frames to work with
1015                    if this has not been done with VIDIOC_REQBUF */
1016                 usbvision_frames_free(usbvision);
1017                 usbvision_empty_framequeues(usbvision);
1018                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1019         }
1020
1021         if(usbvision->streaming != Stream_On) {
1022                 /* no stream is running, make it running ! */
1023                 usbvision->streaming = Stream_On;
1024                 call_all(usbvision, video, s_stream, 1);
1025         }
1026
1027         /* Then, enqueue as many frames as possible
1028            (like a user of VIDIOC_QBUF would do) */
1029         for(i=0;i<usbvision->num_frames;i++) {
1030                 frame = &usbvision->frame[i];
1031                 if(frame->grabstate == FrameState_Unused) {
1032                         /* Mark it as ready and enqueue frame */
1033                         frame->grabstate = FrameState_Ready;
1034                         frame->scanstate = ScanState_Scanning;
1035                         /* Accumulated in usbvision_parse_data() */
1036                         frame->scanlength = 0;
1037
1038                         /* set v4l2_format index */
1039                         frame->v4l2_format = usbvision->palette;
1040
1041                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1042                         list_add_tail(&frame->frame, &usbvision->inqueue);
1043                         spin_unlock_irqrestore(&usbvision->queue_lock,
1044                                                lock_flags);
1045                 }
1046         }
1047
1048         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1049         if (list_empty(&(usbvision->outqueue))) {
1050                 if(noblock)
1051                         return -EAGAIN;
1052
1053                 ret = wait_event_interruptible
1054                         (usbvision->wait_frame,
1055                          !list_empty(&(usbvision->outqueue)));
1056                 if (ret)
1057                         return ret;
1058         }
1059
1060         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1061         frame = list_entry(usbvision->outqueue.next,
1062                            struct usbvision_frame, frame);
1063         list_del(usbvision->outqueue.next);
1064         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1065
1066         /* An error returns an empty frame */
1067         if (frame->grabstate == FrameState_Error) {
1068                 frame->bytes_read = 0;
1069                 return 0;
1070         }
1071
1072         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1073                __func__,
1074                frame->index, frame->bytes_read, frame->scanlength);
1075
1076         /* copy bytes to user space; we allow for partials reads */
1077         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1078                 count = frame->scanlength - frame->bytes_read;
1079
1080         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1081                 return -EFAULT;
1082         }
1083
1084         frame->bytes_read += count;
1085         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1086                __func__,
1087                (unsigned long)count, frame->bytes_read);
1088
1089         /* For now, forget the frame if it has not been read in one shot. */
1090 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1091                 frame->bytes_read = 0;
1092
1093                 /* Mark it as available to be used again. */
1094                 frame->grabstate = FrameState_Unused;
1095 /*      } */
1096
1097         return count;
1098 }
1099
1100 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1101 {
1102         unsigned long size = vma->vm_end - vma->vm_start,
1103                 start = vma->vm_start;
1104         void *pos;
1105         u32 i;
1106         struct usb_usbvision *usbvision = video_drvdata(file);
1107
1108         PDEBUG(DBG_MMAP, "mmap");
1109
1110         mutex_lock(&usbvision->lock);
1111
1112         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1113                 mutex_unlock(&usbvision->lock);
1114                 return -EFAULT;
1115         }
1116
1117         if (!(vma->vm_flags & VM_WRITE) ||
1118             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1119                 mutex_unlock(&usbvision->lock);
1120                 return -EINVAL;
1121         }
1122
1123         for (i = 0; i < usbvision->num_frames; i++) {
1124                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1125                     vma->vm_pgoff)
1126                         break;
1127         }
1128         if (i == usbvision->num_frames) {
1129                 PDEBUG(DBG_MMAP,
1130                        "mmap: user supplied mapping address is out of range");
1131                 mutex_unlock(&usbvision->lock);
1132                 return -EINVAL;
1133         }
1134
1135         /* VM_IO is eventually going to replace PageReserved altogether */
1136         vma->vm_flags |= VM_IO;
1137         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1138
1139         pos = usbvision->frame[i].data;
1140         while (size > 0) {
1141
1142                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1143                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1144                         mutex_unlock(&usbvision->lock);
1145                         return -EAGAIN;
1146                 }
1147                 start += PAGE_SIZE;
1148                 pos += PAGE_SIZE;
1149                 size -= PAGE_SIZE;
1150         }
1151
1152         mutex_unlock(&usbvision->lock);
1153         return 0;
1154 }
1155
1156
1157 /*
1158  * Here comes the stuff for radio on usbvision based devices
1159  *
1160  */
1161 static int usbvision_radio_open(struct file *file)
1162 {
1163         struct usb_usbvision *usbvision = video_drvdata(file);
1164         int errCode = 0;
1165
1166         PDEBUG(DBG_IO, "%s:", __func__);
1167
1168         mutex_lock(&usbvision->lock);
1169
1170         if (usbvision->user) {
1171                 dev_err(&usbvision->rdev->dev,
1172                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1173                                 __func__);
1174                 errCode = -EBUSY;
1175         }
1176         else {
1177                 if(PowerOnAtOpen) {
1178                         usbvision_reset_powerOffTimer(usbvision);
1179                         if (usbvision->power == 0) {
1180                                 usbvision_power_on(usbvision);
1181                                 usbvision_i2c_register(usbvision);
1182                         }
1183                 }
1184
1185                 /* Alternate interface 1 is is the biggest frame size */
1186                 errCode = usbvision_set_alternate(usbvision);
1187                 if (errCode < 0) {
1188                         usbvision->last_error = errCode;
1189                         errCode = -EBUSY;
1190                         goto out;
1191                 }
1192
1193                 // If so far no errors then we shall start the radio
1194                 usbvision->radio = 1;
1195                 call_all(usbvision, tuner, s_radio);
1196                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1197                 usbvision->user++;
1198         }
1199
1200         if (errCode) {
1201                 if (PowerOnAtOpen) {
1202                         usbvision_i2c_unregister(usbvision);
1203                         usbvision_power_off(usbvision);
1204                         usbvision->initialized = 0;
1205                 }
1206         }
1207 out:
1208         mutex_unlock(&usbvision->lock);
1209         return errCode;
1210 }
1211
1212
1213 static int usbvision_radio_close(struct file *file)
1214 {
1215         struct usb_usbvision *usbvision = video_drvdata(file);
1216         int errCode = 0;
1217
1218         PDEBUG(DBG_IO, "");
1219
1220         mutex_lock(&usbvision->lock);
1221
1222         /* Set packet size to 0 */
1223         usbvision->ifaceAlt=0;
1224         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1225                                     usbvision->ifaceAlt);
1226
1227         usbvision_audio_off(usbvision);
1228         usbvision->radio=0;
1229         usbvision->user--;
1230
1231         if (PowerOnAtOpen) {
1232                 usbvision_set_powerOffTimer(usbvision);
1233                 usbvision->initialized = 0;
1234         }
1235
1236         mutex_unlock(&usbvision->lock);
1237
1238         if (usbvision->remove_pending) {
1239                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1240                 usbvision_release(usbvision);
1241         }
1242
1243         PDEBUG(DBG_IO, "success");
1244         return errCode;
1245 }
1246
1247 /*
1248  * Here comes the stuff for vbi on usbvision based devices
1249  *
1250  */
1251 static int usbvision_vbi_open(struct file *file)
1252 {
1253         /* TODO */
1254         return -ENODEV;
1255 }
1256
1257 static int usbvision_vbi_close(struct file *file)
1258 {
1259         /* TODO */
1260         return -ENODEV;
1261 }
1262
1263 static long usbvision_do_vbi_ioctl(struct file *file,
1264                                  unsigned int cmd, void *arg)
1265 {
1266         /* TODO */
1267         return -ENOIOCTLCMD;
1268 }
1269
1270 static long usbvision_vbi_ioctl(struct file *file,
1271                        unsigned int cmd, unsigned long arg)
1272 {
1273         return video_usercopy(file, cmd, arg, usbvision_do_vbi_ioctl);
1274 }
1275
1276
1277 //
1278 // Video registration stuff
1279 //
1280
1281 // Video template
1282 static const struct v4l2_file_operations usbvision_fops = {
1283         .owner             = THIS_MODULE,
1284         .open           = usbvision_v4l2_open,
1285         .release        = usbvision_v4l2_close,
1286         .read           = usbvision_v4l2_read,
1287         .mmap           = usbvision_v4l2_mmap,
1288         .ioctl          = video_ioctl2,
1289 /*      .poll          = video_poll, */
1290 };
1291
1292 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1293         .vidioc_querycap      = vidioc_querycap,
1294         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1295         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1296         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1297         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1298         .vidioc_reqbufs       = vidioc_reqbufs,
1299         .vidioc_querybuf      = vidioc_querybuf,
1300         .vidioc_qbuf          = vidioc_qbuf,
1301         .vidioc_dqbuf         = vidioc_dqbuf,
1302         .vidioc_s_std         = vidioc_s_std,
1303         .vidioc_enum_input    = vidioc_enum_input,
1304         .vidioc_g_input       = vidioc_g_input,
1305         .vidioc_s_input       = vidioc_s_input,
1306         .vidioc_queryctrl     = vidioc_queryctrl,
1307         .vidioc_g_audio       = vidioc_g_audio,
1308         .vidioc_s_audio       = vidioc_s_audio,
1309         .vidioc_g_ctrl        = vidioc_g_ctrl,
1310         .vidioc_s_ctrl        = vidioc_s_ctrl,
1311         .vidioc_streamon      = vidioc_streamon,
1312         .vidioc_streamoff     = vidioc_streamoff,
1313 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1314 /*      .vidiocgmbuf          = vidiocgmbuf, */
1315 #endif
1316         .vidioc_g_tuner       = vidioc_g_tuner,
1317         .vidioc_s_tuner       = vidioc_s_tuner,
1318         .vidioc_g_frequency   = vidioc_g_frequency,
1319         .vidioc_s_frequency   = vidioc_s_frequency,
1320 #ifdef CONFIG_VIDEO_ADV_DEBUG
1321         .vidioc_g_register    = vidioc_g_register,
1322         .vidioc_s_register    = vidioc_s_register,
1323 #endif
1324 };
1325
1326 static struct video_device usbvision_video_template = {
1327         .fops           = &usbvision_fops,
1328         .ioctl_ops      = &usbvision_ioctl_ops,
1329         .name           = "usbvision-video",
1330         .release        = video_device_release,
1331         .minor          = -1,
1332         .tvnorms              = USBVISION_NORMS,
1333         .current_norm         = V4L2_STD_PAL
1334 };
1335
1336
1337 // Radio template
1338 static const struct v4l2_file_operations usbvision_radio_fops = {
1339         .owner             = THIS_MODULE,
1340         .open           = usbvision_radio_open,
1341         .release        = usbvision_radio_close,
1342         .ioctl          = video_ioctl2,
1343 };
1344
1345 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1346         .vidioc_querycap      = vidioc_querycap,
1347         .vidioc_enum_input    = vidioc_enum_input,
1348         .vidioc_g_input       = vidioc_g_input,
1349         .vidioc_s_input       = vidioc_s_input,
1350         .vidioc_queryctrl     = vidioc_queryctrl,
1351         .vidioc_g_audio       = vidioc_g_audio,
1352         .vidioc_s_audio       = vidioc_s_audio,
1353         .vidioc_g_ctrl        = vidioc_g_ctrl,
1354         .vidioc_s_ctrl        = vidioc_s_ctrl,
1355         .vidioc_g_tuner       = vidioc_g_tuner,
1356         .vidioc_s_tuner       = vidioc_s_tuner,
1357         .vidioc_g_frequency   = vidioc_g_frequency,
1358         .vidioc_s_frequency   = vidioc_s_frequency,
1359 };
1360
1361 static struct video_device usbvision_radio_template = {
1362         .fops           = &usbvision_radio_fops,
1363         .name           = "usbvision-radio",
1364         .release        = video_device_release,
1365         .minor          = -1,
1366         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1367
1368         .tvnorms              = USBVISION_NORMS,
1369         .current_norm         = V4L2_STD_PAL
1370 };
1371
1372 // vbi template
1373 static const struct v4l2_file_operations usbvision_vbi_fops = {
1374         .owner             = THIS_MODULE,
1375         .open           = usbvision_vbi_open,
1376         .release        = usbvision_vbi_close,
1377         .ioctl          = usbvision_vbi_ioctl,
1378 };
1379
1380 static struct video_device usbvision_vbi_template=
1381 {
1382         .fops           = &usbvision_vbi_fops,
1383         .release        = video_device_release,
1384         .name           = "usbvision-vbi",
1385         .minor          = -1,
1386 };
1387
1388
1389 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1390                                         struct video_device *vdev_template,
1391                                         char *name)
1392 {
1393         struct usb_device *usb_dev = usbvision->dev;
1394         struct video_device *vdev;
1395
1396         if (usb_dev == NULL) {
1397                 dev_err(&usbvision->dev->dev,
1398                         "%s: usbvision->dev is not set\n", __func__);
1399                 return NULL;
1400         }
1401
1402         vdev = video_device_alloc();
1403         if (NULL == vdev) {
1404                 return NULL;
1405         }
1406         *vdev = *vdev_template;
1407 //      vdev->minor   = -1;
1408         vdev->v4l2_dev = &usbvision->v4l2_dev;
1409         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1410         video_set_drvdata(vdev, usbvision);
1411         return vdev;
1412 }
1413
1414 // unregister video4linux devices
1415 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1416 {
1417         // vbi Device:
1418         if (usbvision->vbi) {
1419                 PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
1420                        usbvision->vbi->num);
1421                 if (usbvision->vbi->minor != -1) {
1422                         video_unregister_device(usbvision->vbi);
1423                 } else {
1424                         video_device_release(usbvision->vbi);
1425                 }
1426                 usbvision->vbi = NULL;
1427         }
1428
1429         // Radio Device:
1430         if (usbvision->rdev) {
1431                 PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
1432                        usbvision->rdev->num);
1433                 if (usbvision->rdev->minor != -1) {
1434                         video_unregister_device(usbvision->rdev);
1435                 } else {
1436                         video_device_release(usbvision->rdev);
1437                 }
1438                 usbvision->rdev = NULL;
1439         }
1440
1441         // Video Device:
1442         if (usbvision->vdev) {
1443                 PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
1444                        usbvision->vdev->num);
1445                 if (usbvision->vdev->minor != -1) {
1446                         video_unregister_device(usbvision->vdev);
1447                 } else {
1448                         video_device_release(usbvision->vdev);
1449                 }
1450                 usbvision->vdev = NULL;
1451         }
1452 }
1453
1454 // register video4linux devices
1455 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1456 {
1457         // Video Device:
1458         usbvision->vdev = usbvision_vdev_init(usbvision,
1459                                               &usbvision_video_template,
1460                                               "USBVision Video");
1461         if (usbvision->vdev == NULL) {
1462                 goto err_exit;
1463         }
1464         if (video_register_device(usbvision->vdev,
1465                                   VFL_TYPE_GRABBER,
1466                                   video_nr)<0) {
1467                 goto err_exit;
1468         }
1469         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
1470                usbvision->nr, usbvision->vdev->num);
1471
1472         // Radio Device:
1473         if (usbvision_device_data[usbvision->DevModel].Radio) {
1474                 // usbvision has radio
1475                 usbvision->rdev = usbvision_vdev_init(usbvision,
1476                                                       &usbvision_radio_template,
1477                                                       "USBVision Radio");
1478                 if (usbvision->rdev == NULL) {
1479                         goto err_exit;
1480                 }
1481                 if (video_register_device(usbvision->rdev,
1482                                           VFL_TYPE_RADIO,
1483                                           radio_nr)<0) {
1484                         goto err_exit;
1485                 }
1486                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
1487                        usbvision->nr, usbvision->rdev->num);
1488         }
1489         // vbi Device:
1490         if (usbvision_device_data[usbvision->DevModel].vbi) {
1491                 usbvision->vbi = usbvision_vdev_init(usbvision,
1492                                                      &usbvision_vbi_template,
1493                                                      "USBVision VBI");
1494                 if (usbvision->vdev == NULL) {
1495                         goto err_exit;
1496                 }
1497                 if (video_register_device(usbvision->vbi,
1498                                           VFL_TYPE_VBI,
1499                                           vbi_nr)<0) {
1500                         goto err_exit;
1501                 }
1502                 printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
1503                        usbvision->nr, usbvision->vbi->num);
1504         }
1505         // all done
1506         return 0;
1507
1508  err_exit:
1509         dev_err(&usbvision->dev->dev,
1510                 "USBVision[%d]: video_register_device() failed\n",
1511                         usbvision->nr);
1512         usbvision_unregister_video(usbvision);
1513         return -1;
1514 }
1515
1516 /*
1517  * usbvision_alloc()
1518  *
1519  * This code allocates the struct usb_usbvision.
1520  * It is filled with default values.
1521  *
1522  * Returns NULL on error, a pointer to usb_usbvision else.
1523  *
1524  */
1525 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1526                                              struct usb_interface *intf)
1527 {
1528         struct usb_usbvision *usbvision;
1529
1530         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1531         if (usbvision == NULL)
1532                 return NULL;
1533
1534         usbvision->dev = dev;
1535         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1536                 goto err_free;
1537
1538         mutex_init(&usbvision->lock);   /* available */
1539
1540         // prepare control urb for control messages during interrupts
1541         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1542         if (usbvision->ctrlUrb == NULL)
1543                 goto err_unreg;
1544         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1545
1546         usbvision_init_powerOffTimer(usbvision);
1547
1548         return usbvision;
1549
1550 err_unreg:
1551         v4l2_device_unregister(&usbvision->v4l2_dev);
1552 err_free:
1553         kfree(usbvision);
1554         return NULL;
1555 }
1556
1557 /*
1558  * usbvision_release()
1559  *
1560  * This code does final release of struct usb_usbvision. This happens
1561  * after the device is disconnected -and- all clients closed their files.
1562  *
1563  */
1564 static void usbvision_release(struct usb_usbvision *usbvision)
1565 {
1566         PDEBUG(DBG_PROBE, "");
1567
1568         mutex_lock(&usbvision->lock);
1569
1570         usbvision_reset_powerOffTimer(usbvision);
1571
1572         usbvision->initialized = 0;
1573
1574         mutex_unlock(&usbvision->lock);
1575
1576         usbvision_remove_sysfs(usbvision->vdev);
1577         usbvision_unregister_video(usbvision);
1578
1579         if (usbvision->ctrlUrb) {
1580                 usb_free_urb(usbvision->ctrlUrb);
1581         }
1582
1583         v4l2_device_unregister(&usbvision->v4l2_dev);
1584         kfree(usbvision);
1585
1586         PDEBUG(DBG_PROBE, "success");
1587 }
1588
1589
1590 /*********************** usb interface **********************************/
1591
1592 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1593 {
1594         int model;
1595
1596         if (usbvision == NULL)
1597                 return;
1598
1599         model = usbvision->DevModel;
1600         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1601
1602         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1603                 usbvision->Vin_Reg2_Preset =
1604                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1605         } else {
1606                 usbvision->Vin_Reg2_Preset = 0;
1607         }
1608
1609         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1610
1611         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1612         usbvision->ctl_input = 0;
1613
1614         /* This should be here to make i2c clients to be able to register */
1615         /* first switch off audio */
1616         usbvision_audio_off(usbvision);
1617         if (!PowerOnAtOpen) {
1618                 /* and then power up the noisy tuner */
1619                 usbvision_power_on(usbvision);
1620                 usbvision_i2c_register(usbvision);
1621         }
1622 }
1623
1624 /*
1625  * usbvision_probe()
1626  *
1627  * This procedure queries device descriptor and accepts the interface
1628  * if it looks like USBVISION video device
1629  *
1630  */
1631 static int __devinit usbvision_probe(struct usb_interface *intf,
1632                                      const struct usb_device_id *devid)
1633 {
1634         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1635         struct usb_interface *uif;
1636         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1637         const struct usb_host_interface *interface;
1638         struct usb_usbvision *usbvision = NULL;
1639         const struct usb_endpoint_descriptor *endpoint;
1640         int model,i;
1641
1642         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1643                                 dev->descriptor.idVendor,
1644                                 dev->descriptor.idProduct, ifnum);
1645
1646         model = devid->driver_info;
1647         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1648                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1649                 return -ENODEV;
1650         }
1651         printk(KERN_INFO "%s: %s found\n", __func__,
1652                                 usbvision_device_data[model].ModelString);
1653
1654         if (usbvision_device_data[model].Interface >= 0) {
1655                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1656         } else {
1657                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1658         }
1659         endpoint = &interface->endpoint[1].desc;
1660         if (!usb_endpoint_xfer_isoc(endpoint)) {
1661                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1662                     __func__, ifnum);
1663                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1664                     __func__, endpoint->bmAttributes);
1665                 return -ENODEV;
1666         }
1667         if (usb_endpoint_dir_out(endpoint)) {
1668                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1669                     __func__, ifnum);
1670                 return -ENODEV;
1671         }
1672
1673         usbvision = usbvision_alloc(dev, intf);
1674         if (usbvision == NULL) {
1675                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1676                 return -ENOMEM;
1677         }
1678
1679         if (dev->descriptor.bNumConfigurations > 1) {
1680                 usbvision->bridgeType = BRIDGE_NT1004;
1681         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1682                 usbvision->bridgeType = BRIDGE_NT1005;
1683         } else {
1684                 usbvision->bridgeType = BRIDGE_NT1003;
1685         }
1686         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1687
1688         mutex_lock(&usbvision->lock);
1689
1690         /* compute alternate max packet sizes */
1691         uif = dev->actconfig->interface[0];
1692
1693         usbvision->num_alt=uif->num_altsetting;
1694         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1695         usbvision->alt_max_pkt_size = kmalloc(32*
1696                                               usbvision->num_alt,GFP_KERNEL);
1697         if (usbvision->alt_max_pkt_size == NULL) {
1698                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1699                 mutex_unlock(&usbvision->lock);
1700                 return -ENOMEM;
1701         }
1702
1703         for (i = 0; i < usbvision->num_alt ; i++) {
1704                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1705                                       wMaxPacketSize);
1706                 usbvision->alt_max_pkt_size[i] =
1707                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1708                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1709                        usbvision->alt_max_pkt_size[i]);
1710         }
1711
1712
1713         usbvision->nr = usbvision_nr++;
1714
1715         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1716         if (usbvision->have_tuner) {
1717                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1718         }
1719
1720         usbvision->DevModel = model;
1721         usbvision->remove_pending = 0;
1722         usbvision->iface = ifnum;
1723         usbvision->ifaceAlt = 0;
1724         usbvision->video_endp = endpoint->bEndpointAddress;
1725         usbvision->isocPacketSize = 0;
1726         usbvision->usb_bandwidth = 0;
1727         usbvision->user = 0;
1728         usbvision->streaming = Stream_Off;
1729         usbvision_register_video(usbvision);
1730         usbvision_configure_video(usbvision);
1731         mutex_unlock(&usbvision->lock);
1732
1733
1734         usb_set_intfdata (intf, usbvision);
1735         usbvision_create_sysfs(usbvision->vdev);
1736
1737         PDEBUG(DBG_PROBE, "success");
1738         return 0;
1739 }
1740
1741
1742 /*
1743  * usbvision_disconnect()
1744  *
1745  * This procedure stops all driver activity, deallocates interface-private
1746  * structure (pointed by 'ptr') and after that driver should be removable
1747  * with no ill consequences.
1748  *
1749  */
1750 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1751 {
1752         struct usb_usbvision *usbvision = usb_get_intfdata(intf);
1753
1754         PDEBUG(DBG_PROBE, "");
1755
1756         if (usbvision == NULL) {
1757                 dev_err(&usbvision->dev->dev,
1758                         "%s: usb_get_intfdata() failed\n", __func__);
1759                 return;
1760         }
1761         usb_set_intfdata (intf, NULL);
1762
1763         mutex_lock(&usbvision->lock);
1764
1765         // At this time we ask to cancel outstanding URBs
1766         usbvision_stop_isoc(usbvision);
1767
1768         v4l2_device_disconnect(&usbvision->v4l2_dev);
1769
1770         if (usbvision->power) {
1771                 usbvision_i2c_unregister(usbvision);
1772                 usbvision_power_off(usbvision);
1773         }
1774         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1775
1776         usb_put_dev(usbvision->dev);
1777         usbvision->dev = NULL;  // USB device is no more
1778
1779         mutex_unlock(&usbvision->lock);
1780
1781         if (usbvision->user) {
1782                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1783                        __func__);
1784                 wake_up_interruptible(&usbvision->wait_frame);
1785                 wake_up_interruptible(&usbvision->wait_stream);
1786         } else {
1787                 usbvision_release(usbvision);
1788         }
1789
1790         PDEBUG(DBG_PROBE, "success");
1791 }
1792
1793 static struct usb_driver usbvision_driver = {
1794         .name           = "usbvision",
1795         .id_table       = usbvision_table,
1796         .probe          = usbvision_probe,
1797         .disconnect     = __devexit_p(usbvision_disconnect),
1798 };
1799
1800 /*
1801  * usbvision_init()
1802  *
1803  * This code is run to initialize the driver.
1804  *
1805  */
1806 static int __init usbvision_init(void)
1807 {
1808         int errCode;
1809
1810         PDEBUG(DBG_PROBE, "");
1811
1812         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1813         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1814         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1815
1816         /* disable planar mode support unless compression enabled */
1817         if (isocMode != ISOC_MODE_COMPRESS ) {
1818                 // FIXME : not the right way to set supported flag
1819                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1820                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1821         }
1822
1823         errCode = usb_register(&usbvision_driver);
1824
1825         if (errCode == 0) {
1826                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1827                 PDEBUG(DBG_PROBE, "success");
1828         }
1829         return errCode;
1830 }
1831
1832 static void __exit usbvision_exit(void)
1833 {
1834  PDEBUG(DBG_PROBE, "");
1835
1836  usb_deregister(&usbvision_driver);
1837  PDEBUG(DBG_PROBE, "success");
1838 }
1839
1840 module_init(usbvision_init);
1841 module_exit(usbvision_exit);
1842
1843 /*
1844  * Overrides for Emacs so that we follow Linus's tabbing style.
1845  * ---------------------------------------------------------------------------
1846  * Local variables:
1847  * c-basic-offset: 8
1848  * End:
1849  */