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