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/mm.h>
  54 #include <linux/highmem.h>
  55 #include <linux/vmalloc.h>
  56 #include <linux/module.h>
  57 #include <linux/init.h>
  58 #include <linux/spinlock.h>
  59 #include <asm/io.h>
  60 #include <linux/videodev2.h>
  61 #include <linux/i2c.h>
  62
  63 #include <media/saa7115.h>
  64 #include <media/v4l2-common.h>
  65 #include <media/v4l2-ioctl.h>
  66 #include <media/tuner.h>
  67
  68 #include <linux/workqueue.h>
  69
  70 #include "usbvision.h"
  71 #include "usbvision-cards.h"
  72
  73 #define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>,\
  74  Dwaine Garden <DwaineGarden@rogers.com>"
  75 #define DRIVER_NAME "usbvision"
  76 #define DRIVER_ALIAS "USBVision"
  77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  78 #define DRIVER_LICENSE "GPL"
  79 #define USBVISION_DRIVER_VERSION_MAJOR 0
  80 #define USBVISION_DRIVER_VERSION_MINOR 9
  81 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
  82 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  83 USBVISION_DRIVER_VERSION_MINOR,\
  84 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  85 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR)\
  86  "." __stringify(USBVISION_DRIVER_VERSION_MINOR)\
  87  "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  88
  89 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  90
  91
  92 #ifdef USBVISION_DEBUG
  93         #define PDEBUG(level, fmt, args...) { \
  94                 if (video_debug & (level)) \
  95                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  96                                 __func__, __LINE__ , ## args); \
  97         }
  98 #else
  99         #define PDEBUG(level, fmt, args...) do {} while(0)
 100 #endif
 101
 102 #define DBG_IO          1<<1
 103 #define DBG_PROBE       1<<2
 104 #define DBG_MMAP        1<<3
 105
 106 //String operations
 107 #define rmspace(str)    while(*str==' ') str++;
 108 #define goto2next(str)  while(*str!=' ') str++; while(*str==' ') str++;
 109
 110
 111 /* sequential number of usbvision device */
 112 static int usbvision_nr;
 113
 114 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 115         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 116         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 117         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 118         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 119         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 120         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 121         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, // 1.5 !
 122         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 123 };
 124
 125 /* Function prototypes */
 126 static void usbvision_release(struct usb_usbvision *usbvision);
 127
 128 /* Default initialization of device driver parameters */
 129 /* Set the default format for ISOC endpoint */
 130 static int isocMode = ISOC_MODE_COMPRESS;
 131 /* Set the default Debug Mode of the device driver */
 132 static int video_debug;
 133 /* Set the default device to power on at startup */
 134 static int PowerOnAtOpen = 1;
 135 /* Sequential Number of Video Device */
 136 static int video_nr = -1;
 137 /* Sequential Number of Radio Device */
 138 static int radio_nr = -1;
 139
 140 /* Grab parameters for the device driver */
 141
 142 /* Showing parameters under SYSFS */
 143 module_param(isocMode, int, 0444);
 144 module_param(video_debug, int, 0444);
 145 module_param(PowerOnAtOpen, int, 0444);
 146 module_param(video_nr, int, 0444);
 147 module_param(radio_nr, int, 0444);
 148
 149 MODULE_PARM_DESC(isocMode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 150 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 151 MODULE_PARM_DESC(PowerOnAtOpen, " Set the default device to power on when device is opened.  Default: 1 (On)");
 152 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 153 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 154
 155
 156 // Misc stuff
 157 MODULE_AUTHOR(DRIVER_AUTHOR);
 158 MODULE_DESCRIPTION(DRIVER_DESC);
 159 MODULE_LICENSE(DRIVER_LICENSE);
 160 MODULE_VERSION(USBVISION_VERSION_STRING);
 161 MODULE_ALIAS(DRIVER_ALIAS);
 162
 163
 164 /*****************************************************************************/
 165 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 166 /* Device information is located at /sys/class/video4linux/video0            */
 167 /* Device parameters information is located at /sys/module/usbvision         */
 168 /* Device USB Information is located at                                      */
 169 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 170 /*****************************************************************************/
 171
 172 #define YES_NO(x) ((x) ? "Yes" : "No")
 173
 174 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 175 {
 176         struct video_device *vdev =
 177                 container_of(cd, struct video_device, dev);
 178         return video_get_drvdata(vdev);
 179 }
 180
 181 static ssize_t show_version(struct device *cd,
 182                             struct device_attribute *attr, char *buf)
 183 {
 184         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 185 }
 186 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 187
 188 static ssize_t show_model(struct device *cd,
 189                           struct device_attribute *attr, char *buf)
 190 {
 191         struct video_device *vdev =
 192                 container_of(cd, struct video_device, dev);
 193         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 194         return sprintf(buf, "%s\n",
 195                        usbvision_device_data[usbvision->DevModel].ModelString);
 196 }
 197 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 198
 199 static ssize_t show_hue(struct device *cd,
 200                         struct device_attribute *attr, char *buf)
 201 {
 202         struct video_device *vdev =
 203                 container_of(cd, struct video_device, dev);
 204         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 205         struct v4l2_control ctrl;
 206         ctrl.id = V4L2_CID_HUE;
 207         ctrl.value = 0;
 208         if(usbvision->user)
 209                 call_all(usbvision, core, g_ctrl, &ctrl);
 210         return sprintf(buf, "%d\n", ctrl.value);
 211 }
 212 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 213
 214 static ssize_t show_contrast(struct device *cd,
 215                              struct device_attribute *attr, char *buf)
 216 {
 217         struct video_device *vdev =
 218                 container_of(cd, struct video_device, dev);
 219         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 220         struct v4l2_control ctrl;
 221         ctrl.id = V4L2_CID_CONTRAST;
 222         ctrl.value = 0;
 223         if(usbvision->user)
 224                 call_all(usbvision, core, g_ctrl, &ctrl);
 225         return sprintf(buf, "%d\n", ctrl.value);
 226 }
 227 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 228
 229 static ssize_t show_brightness(struct device *cd,
 230                                struct device_attribute *attr, char *buf)
 231 {
 232         struct video_device *vdev =
 233                 container_of(cd, struct video_device, dev);
 234         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 235         struct v4l2_control ctrl;
 236         ctrl.id = V4L2_CID_BRIGHTNESS;
 237         ctrl.value = 0;
 238         if(usbvision->user)
 239                 call_all(usbvision, core, g_ctrl, &ctrl);
 240         return sprintf(buf, "%d\n", ctrl.value);
 241 }
 242 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 243
 244 static ssize_t show_saturation(struct device *cd,
 245                                struct device_attribute *attr, char *buf)
 246 {
 247         struct video_device *vdev =
 248                 container_of(cd, struct video_device, dev);
 249         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 250         struct v4l2_control ctrl;
 251         ctrl.id = V4L2_CID_SATURATION;
 252         ctrl.value = 0;
 253         if(usbvision->user)
 254                 call_all(usbvision, core, g_ctrl, &ctrl);
 255         return sprintf(buf, "%d\n", ctrl.value);
 256 }
 257 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 258
 259 static ssize_t show_streaming(struct device *cd,
 260                               struct device_attribute *attr, char *buf)
 261 {
 262         struct video_device *vdev =
 263                 container_of(cd, struct video_device, dev);
 264         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 265         return sprintf(buf, "%s\n",
 266                        YES_NO(usbvision->streaming==Stream_On?1:0));
 267 }
 268 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 269
 270 static ssize_t show_compression(struct device *cd,
 271                                 struct device_attribute *attr, char *buf)
 272 {
 273         struct video_device *vdev =
 274                 container_of(cd, struct video_device, dev);
 275         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 276         return sprintf(buf, "%s\n",
 277                        YES_NO(usbvision->isocMode==ISOC_MODE_COMPRESS));
 278 }
 279 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 280
 281 static ssize_t show_device_bridge(struct device *cd,
 282                                   struct device_attribute *attr, char *buf)
 283 {
 284         struct video_device *vdev =
 285                 container_of(cd, struct video_device, dev);
 286         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 287         return sprintf(buf, "%d\n", usbvision->bridgeType);
 288 }
 289 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 290
 291 static void usbvision_create_sysfs(struct video_device *vdev)
 292 {
 293         int res;
 294         if (!vdev)
 295                 return;
 296         do {
 297                 res = device_create_file(&vdev->dev, &dev_attr_version);
 298                 if (res<0)
 299                         break;
 300                 res = device_create_file(&vdev->dev, &dev_attr_model);
 301                 if (res<0)
 302                         break;
 303                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 304                 if (res<0)
 305                         break;
 306                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 307                 if (res<0)
 308                         break;
 309                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 310                 if (res<0)
 311                         break;
 312                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 313                 if (res<0)
 314                         break;
 315                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 316                 if (res<0)
 317                         break;
 318                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 319                 if (res<0)
 320                         break;
 321                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 322                 if (res>=0)
 323                         return;
 324         } while (0);
 325
 326         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 327 }
 328
 329 static void usbvision_remove_sysfs(struct video_device *vdev)
 330 {
 331         if (vdev) {
 332                 device_remove_file(&vdev->dev, &dev_attr_version);
 333                 device_remove_file(&vdev->dev, &dev_attr_model);
 334                 device_remove_file(&vdev->dev, &dev_attr_hue);
 335                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 336                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 337                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 338                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 339                 device_remove_file(&vdev->dev, &dev_attr_compression);
 340                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 341         }
 342 }
 343
 344 /*
 345  * usbvision_open()
 346  *
 347  * This is part of Video 4 Linux API. The driver can be opened by one
 348  * client only (checks internal counter 'usbvision->user'). The procedure
 349  * then allocates buffers needed for video processing.
 350  *
 351  */
 352 static int usbvision_v4l2_open(struct file *file)
 353 {
 354         struct usb_usbvision *usbvision = video_drvdata(file);
 355         int errCode = 0;
 356
 357         PDEBUG(DBG_IO, "open");
 358
 359         mutex_lock(&usbvision->lock);
 360         usbvision_reset_powerOffTimer(usbvision);
 361
 362         if (usbvision->user)
 363                 errCode = -EBUSY;
 364         else {
 365                 /* Allocate memory for the scratch ring buffer */
 366                 errCode = usbvision_scratch_alloc(usbvision);
 367                 if (isocMode==ISOC_MODE_COMPRESS) {
 368                         /* Allocate intermediate decompression buffers
 369                            only if needed */
 370                         errCode = usbvision_decompress_alloc(usbvision);
 371                 }
 372                 if (errCode) {
 373                         /* Deallocate all buffers if trouble */
 374                         usbvision_scratch_free(usbvision);
 375                         usbvision_decompress_free(usbvision);
 376                 }
 377         }
 378
 379         /* If so far no errors then we shall start the camera */
 380         if (!errCode) {
 381                 if (usbvision->power == 0) {
 382                         usbvision_power_on(usbvision);
 383                         usbvision_i2c_register(usbvision);
 384                 }
 385
 386                 /* Send init sequence only once, it's large! */
 387                 if (!usbvision->initialized) {
 388                         int setup_ok = 0;
 389                         setup_ok = usbvision_setup(usbvision,isocMode);
 390                         if (setup_ok)
 391                                 usbvision->initialized = 1;
 392                         else
 393                                 errCode = -EBUSY;
 394                 }
 395
 396                 if (!errCode) {
 397                         usbvision_begin_streaming(usbvision);
 398                         errCode = usbvision_init_isoc(usbvision);
 399                         /* device must be initialized before isoc transfer */
 400                         usbvision_muxsel(usbvision,0);
 401                         usbvision->user++;
 402                 } else {
 403                         if (PowerOnAtOpen) {
 404                                 usbvision_i2c_unregister(usbvision);
 405                                 usbvision_power_off(usbvision);
 406                                 usbvision->initialized = 0;
 407                         }
 408                 }
 409         }
 410
 411         /* prepare queues */
 412         usbvision_empty_framequeues(usbvision);
 413
 414         PDEBUG(DBG_IO, "success");
 415         mutex_unlock(&usbvision->lock);
 416         return errCode;
 417 }
 418
 419 /*
 420  * usbvision_v4l2_close()
 421  *
 422  * This is part of Video 4 Linux API. The procedure
 423  * stops streaming and deallocates all buffers that were earlier
 424  * allocated in usbvision_v4l2_open().
 425  *
 426  */
 427 static int usbvision_v4l2_close(struct file *file)
 428 {
 429         struct usb_usbvision *usbvision = video_drvdata(file);
 430
 431         PDEBUG(DBG_IO, "close");
 432         mutex_lock(&usbvision->lock);
 433
 434         usbvision_audio_off(usbvision);
 435         usbvision_restart_isoc(usbvision);
 436         usbvision_stop_isoc(usbvision);
 437
 438         usbvision_decompress_free(usbvision);
 439         usbvision_frames_free(usbvision);
 440         usbvision_empty_framequeues(usbvision);
 441         usbvision_scratch_free(usbvision);
 442
 443         usbvision->user--;
 444
 445         if (PowerOnAtOpen) {
 446                 /* power off in a little while
 447                    to avoid off/on every close/open short sequences */
 448                 usbvision_set_powerOffTimer(usbvision);
 449                 usbvision->initialized = 0;
 450         }
 451
 452         mutex_unlock(&usbvision->lock);
 453
 454         if (usbvision->remove_pending) {
 455                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 456                 usbvision_release(usbvision);
 457         }
 458
 459         PDEBUG(DBG_IO, "success");
 460         return 0;
 461 }
 462
 463
 464 /*
 465  * usbvision_ioctl()
 466  *
 467  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 468  *
 469  */
 470 #ifdef CONFIG_VIDEO_ADV_DEBUG
 471 static int vidioc_g_register (struct file *file, void *priv,
 472                                 struct v4l2_dbg_register *reg)
 473 {
 474         struct usb_usbvision *usbvision = video_drvdata(file);
 475         int errCode;
 476
 477         if (!v4l2_chip_match_host(&reg->match))
 478                 return -EINVAL;
 479         /* NT100x has a 8-bit register space */
 480         errCode = usbvision_read_reg(usbvision, reg->reg&0xff);
 481         if (errCode < 0) {
 482                 dev_err(&usbvision->vdev->dev,
 483                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 484                                 __func__, errCode);
 485                 return errCode;
 486         }
 487         reg->val = errCode;
 488         reg->size = 1;
 489         return 0;
 490 }
 491
 492 static int vidioc_s_register (struct file *file, void *priv,
 493                                 struct v4l2_dbg_register *reg)
 494 {
 495         struct usb_usbvision *usbvision = video_drvdata(file);
 496         int errCode;
 497
 498         if (!v4l2_chip_match_host(&reg->match))
 499                 return -EINVAL;
 500         /* NT100x has a 8-bit register space */
 501         errCode = usbvision_write_reg(usbvision, reg->reg&0xff, reg->val);
 502         if (errCode < 0) {
 503                 dev_err(&usbvision->vdev->dev,
 504                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 505                                 __func__, errCode);
 506                 return errCode;
 507         }
 508         return 0;
 509 }
 510 #endif
 511
 512 static int vidioc_querycap (struct file *file, void  *priv,
 513                                         struct v4l2_capability *vc)
 514 {
 515         struct usb_usbvision *usbvision = video_drvdata(file);
 516
 517         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 518         strlcpy(vc->card,
 519                 usbvision_device_data[usbvision->DevModel].ModelString,
 520                 sizeof(vc->card));
 521         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 522         vc->version = USBVISION_DRIVER_VERSION;
 523         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 524                 V4L2_CAP_AUDIO |
 525                 V4L2_CAP_READWRITE |
 526                 V4L2_CAP_STREAMING |
 527                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 528         return 0;
 529 }
 530
 531 static int vidioc_enum_input (struct file *file, void *priv,
 532                                 struct v4l2_input *vi)
 533 {
 534         struct usb_usbvision *usbvision = video_drvdata(file);
 535         int chan;
 536
 537         if (vi->index >= usbvision->video_inputs)
 538                 return -EINVAL;
 539         if (usbvision->have_tuner) {
 540                 chan = vi->index;
 541         } else {
 542                 chan = vi->index + 1; /*skip Television string*/
 543         }
 544         /* Determine the requested input characteristics
 545            specific for each usbvision card model */
 546         switch(chan) {
 547         case 0:
 548                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 549                         strcpy(vi->name, "White Video Input");
 550                 } else {
 551                         strcpy(vi->name, "Television");
 552                         vi->type = V4L2_INPUT_TYPE_TUNER;
 553                         vi->audioset = 1;
 554                         vi->tuner = chan;
 555                         vi->std = USBVISION_NORMS;
 556                 }
 557                 break;
 558         case 1:
 559                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 560                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 561                         strcpy(vi->name, "Green Video Input");
 562                 } else {
 563                         strcpy(vi->name, "Composite Video Input");
 564                 }
 565                 vi->std = V4L2_STD_PAL;
 566                 break;
 567         case 2:
 568                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 569                 if (usbvision_device_data[usbvision->DevModel].VideoChannels == 4) {
 570                         strcpy(vi->name, "Yellow Video Input");
 571                 } else {
 572                         strcpy(vi->name, "S-Video Input");
 573                 }
 574                 vi->std = V4L2_STD_PAL;
 575                 break;
 576         case 3:
 577                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 578                 strcpy(vi->name, "Red Video Input");
 579                 vi->std = V4L2_STD_PAL;
 580                 break;
 581         }
 582         return 0;
 583 }
 584
 585 static int vidioc_g_input (struct file *file, void *priv, unsigned int *input)
 586 {
 587         struct usb_usbvision *usbvision = video_drvdata(file);
 588
 589         *input = usbvision->ctl_input;
 590         return 0;
 591 }
 592
 593 static int vidioc_s_input (struct file *file, void *priv, unsigned int input)
 594 {
 595         struct usb_usbvision *usbvision = video_drvdata(file);
 596
 597         if (input >= usbvision->video_inputs)
 598                 return -EINVAL;
 599
 600         mutex_lock(&usbvision->lock);
 601         usbvision_muxsel(usbvision, input);
 602         usbvision_set_input(usbvision);
 603         usbvision_set_output(usbvision,
 604                              usbvision->curwidth,
 605                              usbvision->curheight);
 606         mutex_unlock(&usbvision->lock);
 607         return 0;
 608 }
 609
 610 static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id)
 611 {
 612         struct usb_usbvision *usbvision = video_drvdata(file);
 613
 614         usbvision->tvnormId=*id;
 615
 616         mutex_lock(&usbvision->lock);
 617         call_all(usbvision, core, s_std, usbvision->tvnormId);
 618         mutex_unlock(&usbvision->lock);
 619         /* propagate the change to the decoder */
 620         usbvision_muxsel(usbvision, usbvision->ctl_input);
 621
 622         return 0;
 623 }
 624
 625 static int vidioc_g_tuner (struct file *file, void *priv,
 626                                 struct v4l2_tuner *vt)
 627 {
 628         struct usb_usbvision *usbvision = video_drvdata(file);
 629
 630         if (!usbvision->have_tuner || vt->index)        // Only tuner 0
 631                 return -EINVAL;
 632         if(usbvision->radio) {
 633                 strcpy(vt->name, "Radio");
 634                 vt->type = V4L2_TUNER_RADIO;
 635         } else {
 636                 strcpy(vt->name, "Television");
 637         }
 638         /* Let clients fill in the remainder of this struct */
 639         call_all(usbvision, tuner, g_tuner, vt);
 640
 641         return 0;
 642 }
 643
 644 static int vidioc_s_tuner (struct file *file, void *priv,
 645                                 struct v4l2_tuner *vt)
 646 {
 647         struct usb_usbvision *usbvision = video_drvdata(file);
 648
 649         // Only no or one tuner for now
 650         if (!usbvision->have_tuner || vt->index)
 651                 return -EINVAL;
 652         /* let clients handle this */
 653         call_all(usbvision, tuner, s_tuner, vt);
 654
 655         return 0;
 656 }
 657
 658 static int vidioc_g_frequency (struct file *file, void *priv,
 659                                 struct v4l2_frequency *freq)
 660 {
 661         struct usb_usbvision *usbvision = video_drvdata(file);
 662
 663         freq->tuner = 0; // Only one tuner
 664         if(usbvision->radio) {
 665                 freq->type = V4L2_TUNER_RADIO;
 666         } else {
 667                 freq->type = V4L2_TUNER_ANALOG_TV;
 668         }
 669         freq->frequency = usbvision->freq;
 670
 671         return 0;
 672 }
 673
 674 static int vidioc_s_frequency (struct file *file, void *priv,
 675                                 struct v4l2_frequency *freq)
 676 {
 677         struct usb_usbvision *usbvision = video_drvdata(file);
 678
 679         // Only no or one tuner for now
 680         if (!usbvision->have_tuner || freq->tuner)
 681                 return -EINVAL;
 682
 683         usbvision->freq = freq->frequency;
 684         call_all(usbvision, tuner, s_frequency, freq);
 685
 686         return 0;
 687 }
 688
 689 static int vidioc_g_audio (struct file *file, void *priv, struct v4l2_audio *a)
 690 {
 691         struct usb_usbvision *usbvision = video_drvdata(file);
 692
 693         if(usbvision->radio) {
 694                 strcpy(a->name,"Radio");
 695         } else {
 696                 strcpy(a->name, "TV");
 697         }
 698
 699         return 0;
 700 }
 701
 702 static int vidioc_s_audio (struct file *file, void *fh,
 703                           struct v4l2_audio *a)
 704 {
 705         if(a->index) {
 706                 return -EINVAL;
 707         }
 708
 709         return 0;
 710 }
 711
 712 static int vidioc_queryctrl (struct file *file, void *priv,
 713                             struct v4l2_queryctrl *ctrl)
 714 {
 715         struct usb_usbvision *usbvision = video_drvdata(file);
 716
 717         call_all(usbvision, core, queryctrl, ctrl);
 718
 719         if (!ctrl->type)
 720                 return -EINVAL;
 721
 722         return 0;
 723 }
 724
 725 static int vidioc_g_ctrl (struct file *file, void *priv,
 726                                 struct v4l2_control *ctrl)
 727 {
 728         struct usb_usbvision *usbvision = video_drvdata(file);
 729         call_all(usbvision, core, g_ctrl, ctrl);
 730
 731         return 0;
 732 }
 733
 734 static int vidioc_s_ctrl (struct file *file, void *priv,
 735                                 struct v4l2_control *ctrl)
 736 {
 737         struct usb_usbvision *usbvision = video_drvdata(file);
 738         call_all(usbvision, core, s_ctrl, ctrl);
 739
 740         return 0;
 741 }
 742
 743 static int vidioc_reqbufs (struct file *file,
 744                            void *priv, struct v4l2_requestbuffers *vr)
 745 {
 746         struct usb_usbvision *usbvision = video_drvdata(file);
 747         int ret;
 748
 749         RESTRICT_TO_RANGE(vr->count,1,USBVISION_NUMFRAMES);
 750
 751         /* Check input validity:
 752            the user must do a VIDEO CAPTURE and MMAP method. */
 753         if (vr->memory != V4L2_MEMORY_MMAP)
 754                 return -EINVAL;
 755
 756         if(usbvision->streaming == Stream_On) {
 757                 if ((ret = usbvision_stream_interrupt(usbvision)))
 758                         return ret;
 759         }
 760
 761         usbvision_frames_free(usbvision);
 762         usbvision_empty_framequeues(usbvision);
 763         vr->count = usbvision_frames_alloc(usbvision,vr->count);
 764
 765         usbvision->curFrame = NULL;
 766
 767         return 0;
 768 }
 769
 770 static int vidioc_querybuf (struct file *file,
 771                             void *priv, struct v4l2_buffer *vb)
 772 {
 773         struct usb_usbvision *usbvision = video_drvdata(file);
 774         struct usbvision_frame *frame;
 775
 776         /* FIXME : must control
 777            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 778         if(vb->index>=usbvision->num_frames)  {
 779                 return -EINVAL;
 780         }
 781         /* Updating the corresponding frame state */
 782         vb->flags = 0;
 783         frame = &usbvision->frame[vb->index];
 784         if(frame->grabstate >= FrameState_Ready)
 785                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 786         if(frame->grabstate >= FrameState_Done)
 787                 vb->flags |= V4L2_BUF_FLAG_DONE;
 788         if(frame->grabstate == FrameState_Unused)
 789                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 790         vb->memory = V4L2_MEMORY_MMAP;
 791
 792         vb->m.offset = vb->index*PAGE_ALIGN(usbvision->max_frame_size);
 793
 794         vb->memory = V4L2_MEMORY_MMAP;
 795         vb->field = V4L2_FIELD_NONE;
 796         vb->length = usbvision->curwidth*
 797                 usbvision->curheight*
 798                 usbvision->palette.bytes_per_pixel;
 799         vb->timestamp = usbvision->frame[vb->index].timestamp;
 800         vb->sequence = usbvision->frame[vb->index].sequence;
 801         return 0;
 802 }
 803
 804 static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 805 {
 806         struct usb_usbvision *usbvision = video_drvdata(file);
 807         struct usbvision_frame *frame;
 808         unsigned long lock_flags;
 809
 810         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 811         if(vb->index>=usbvision->num_frames)  {
 812                 return -EINVAL;
 813         }
 814
 815         frame = &usbvision->frame[vb->index];
 816
 817         if (frame->grabstate != FrameState_Unused) {
 818                 return -EAGAIN;
 819         }
 820
 821         /* Mark it as ready and enqueue frame */
 822         frame->grabstate = FrameState_Ready;
 823         frame->scanstate = ScanState_Scanning;
 824         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 825
 826         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 827
 828         /* set v4l2_format index */
 829         frame->v4l2_format = usbvision->palette;
 830
 831         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 832         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 833         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 834
 835         return 0;
 836 }
 837
 838 static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *vb)
 839 {
 840         struct usb_usbvision *usbvision = video_drvdata(file);
 841         int ret;
 842         struct usbvision_frame *f;
 843         unsigned long lock_flags;
 844
 845         if (list_empty(&(usbvision->outqueue))) {
 846                 if (usbvision->streaming == Stream_Idle)
 847                         return -EINVAL;
 848                 ret = wait_event_interruptible
 849                         (usbvision->wait_frame,
 850                          !list_empty(&(usbvision->outqueue)));
 851                 if (ret)
 852                         return ret;
 853         }
 854
 855         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 856         f = list_entry(usbvision->outqueue.next,
 857                        struct usbvision_frame, frame);
 858         list_del(usbvision->outqueue.next);
 859         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 860
 861         f->grabstate = FrameState_Unused;
 862
 863         vb->memory = V4L2_MEMORY_MMAP;
 864         vb->flags = V4L2_BUF_FLAG_MAPPED |
 865                 V4L2_BUF_FLAG_QUEUED |
 866                 V4L2_BUF_FLAG_DONE;
 867         vb->index = f->index;
 868         vb->sequence = f->sequence;
 869         vb->timestamp = f->timestamp;
 870         vb->field = V4L2_FIELD_NONE;
 871         vb->bytesused = f->scanlength;
 872
 873         return 0;
 874 }
 875
 876 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 877 {
 878         struct usb_usbvision *usbvision = video_drvdata(file);
 879
 880         usbvision->streaming = Stream_On;
 881         call_all(usbvision, video, s_stream, 1);
 882
 883         return 0;
 884 }
 885
 886 static int vidioc_streamoff(struct file *file,
 887                             void *priv, enum v4l2_buf_type type)
 888 {
 889         struct usb_usbvision *usbvision = video_drvdata(file);
 890
 891         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 892                 return -EINVAL;
 893
 894         if(usbvision->streaming == Stream_On) {
 895                 usbvision_stream_interrupt(usbvision);
 896                 /* Stop all video streamings */
 897                 call_all(usbvision, video, s_stream, 0);
 898         }
 899         usbvision_empty_framequeues(usbvision);
 900
 901         return 0;
 902 }
 903
 904 static int vidioc_enum_fmt_vid_cap (struct file *file, void  *priv,
 905                                         struct v4l2_fmtdesc *vfd)
 906 {
 907         if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
 908                 return -EINVAL;
 909         }
 910         strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
 911         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 912         return 0;
 913 }
 914
 915 static int vidioc_g_fmt_vid_cap (struct file *file, void *priv,
 916                                         struct v4l2_format *vf)
 917 {
 918         struct usb_usbvision *usbvision = video_drvdata(file);
 919         vf->fmt.pix.width = usbvision->curwidth;
 920         vf->fmt.pix.height = usbvision->curheight;
 921         vf->fmt.pix.pixelformat = usbvision->palette.format;
 922         vf->fmt.pix.bytesperline =
 923                 usbvision->curwidth*usbvision->palette.bytes_per_pixel;
 924         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
 925         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 926         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 927
 928         return 0;
 929 }
 930
 931 static int vidioc_try_fmt_vid_cap (struct file *file, void *priv,
 932                                struct v4l2_format *vf)
 933 {
 934         struct usb_usbvision *usbvision = video_drvdata(file);
 935         int formatIdx;
 936
 937         /* Find requested format in available ones */
 938         for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
 939                 if(vf->fmt.pix.pixelformat ==
 940                    usbvision_v4l2_format[formatIdx].format) {
 941                         usbvision->palette = usbvision_v4l2_format[formatIdx];
 942                         break;
 943                 }
 944         }
 945         /* robustness */
 946         if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
 947                 return -EINVAL;
 948         }
 949         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 950         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 951
 952         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 953                 usbvision->palette.bytes_per_pixel;
 954         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 955
 956         return 0;
 957 }
 958
 959 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 960                                struct v4l2_format *vf)
 961 {
 962         struct usb_usbvision *usbvision = video_drvdata(file);
 963         int ret;
 964
 965         if( 0 != (ret=vidioc_try_fmt_vid_cap (file, priv, vf)) ) {
 966                 return ret;
 967         }
 968
 969         /* stop io in case it is already in progress */
 970         if(usbvision->streaming == Stream_On) {
 971                 if ((ret = usbvision_stream_interrupt(usbvision)))
 972                         return ret;
 973         }
 974         usbvision_frames_free(usbvision);
 975         usbvision_empty_framequeues(usbvision);
 976
 977         usbvision->curFrame = NULL;
 978
 979         /* by now we are committed to the new data... */
 980         mutex_lock(&usbvision->lock);
 981         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 982         mutex_unlock(&usbvision->lock);
 983
 984         return 0;
 985 }
 986
 987 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
 988                       size_t count, loff_t *ppos)
 989 {
 990         struct usb_usbvision *usbvision = video_drvdata(file);
 991         int noblock = file->f_flags & O_NONBLOCK;
 992         unsigned long lock_flags;
 993
 994         int ret,i;
 995         struct usbvision_frame *frame;
 996
 997         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 998                (unsigned long)count, noblock);
 999
1000         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
1001                 return -EFAULT;
1002
1003         /* This entry point is compatible with the mmap routines
1004            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
1005            to get frames or call read on the device. */
1006         if(!usbvision->num_frames) {
1007                 /* First, allocate some frames to work with
1008                    if this has not been done with VIDIOC_REQBUF */
1009                 usbvision_frames_free(usbvision);
1010                 usbvision_empty_framequeues(usbvision);
1011                 usbvision_frames_alloc(usbvision,USBVISION_NUMFRAMES);
1012         }
1013
1014         if(usbvision->streaming != Stream_On) {
1015                 /* no stream is running, make it running ! */
1016                 usbvision->streaming = Stream_On;
1017                 call_all(usbvision, video, s_stream, 1);
1018         }
1019
1020         /* Then, enqueue as many frames as possible
1021            (like a user of VIDIOC_QBUF would do) */
1022         for(i=0;i<usbvision->num_frames;i++) {
1023                 frame = &usbvision->frame[i];
1024                 if(frame->grabstate == FrameState_Unused) {
1025                         /* Mark it as ready and enqueue frame */
1026                         frame->grabstate = FrameState_Ready;
1027                         frame->scanstate = ScanState_Scanning;
1028                         /* Accumulated in usbvision_parse_data() */
1029                         frame->scanlength = 0;
1030
1031                         /* set v4l2_format index */
1032                         frame->v4l2_format = usbvision->palette;
1033
1034                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1035                         list_add_tail(&frame->frame, &usbvision->inqueue);
1036                         spin_unlock_irqrestore(&usbvision->queue_lock,
1037                                                lock_flags);
1038                 }
1039         }
1040
1041         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1042         if (list_empty(&(usbvision->outqueue))) {
1043                 if(noblock)
1044                         return -EAGAIN;
1045
1046                 ret = wait_event_interruptible
1047                         (usbvision->wait_frame,
1048                          !list_empty(&(usbvision->outqueue)));
1049                 if (ret)
1050                         return ret;
1051         }
1052
1053         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1054         frame = list_entry(usbvision->outqueue.next,
1055                            struct usbvision_frame, frame);
1056         list_del(usbvision->outqueue.next);
1057         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1058
1059         /* An error returns an empty frame */
1060         if (frame->grabstate == FrameState_Error) {
1061                 frame->bytes_read = 0;
1062                 return 0;
1063         }
1064
1065         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1066                __func__,
1067                frame->index, frame->bytes_read, frame->scanlength);
1068
1069         /* copy bytes to user space; we allow for partials reads */
1070         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1071                 count = frame->scanlength - frame->bytes_read;
1072
1073         if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
1074                 return -EFAULT;
1075         }
1076
1077         frame->bytes_read += count;
1078         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1079                __func__,
1080                (unsigned long)count, frame->bytes_read);
1081
1082         /* For now, forget the frame if it has not been read in one shot. */
1083 /*      if (frame->bytes_read >= frame->scanlength) {// All data has been read */
1084                 frame->bytes_read = 0;
1085
1086                 /* Mark it as available to be used again. */
1087                 frame->grabstate = FrameState_Unused;
1088 /*      } */
1089
1090         return count;
1091 }
1092
1093 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1094 {
1095         unsigned long size = vma->vm_end - vma->vm_start,
1096                 start = vma->vm_start;
1097         void *pos;
1098         u32 i;
1099         struct usb_usbvision *usbvision = video_drvdata(file);
1100
1101         PDEBUG(DBG_MMAP, "mmap");
1102
1103         mutex_lock(&usbvision->lock);
1104
1105         if (!USBVISION_IS_OPERATIONAL(usbvision)) {
1106                 mutex_unlock(&usbvision->lock);
1107                 return -EFAULT;
1108         }
1109
1110         if (!(vma->vm_flags & VM_WRITE) ||
1111             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1112                 mutex_unlock(&usbvision->lock);
1113                 return -EINVAL;
1114         }
1115
1116         for (i = 0; i < usbvision->num_frames; i++) {
1117                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1118                     vma->vm_pgoff)
1119                         break;
1120         }
1121         if (i == usbvision->num_frames) {
1122                 PDEBUG(DBG_MMAP,
1123                        "mmap: user supplied mapping address is out of range");
1124                 mutex_unlock(&usbvision->lock);
1125                 return -EINVAL;
1126         }
1127
1128         /* VM_IO is eventually going to replace PageReserved altogether */
1129         vma->vm_flags |= VM_IO;
1130         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1131
1132         pos = usbvision->frame[i].data;
1133         while (size > 0) {
1134
1135                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1136                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1137                         mutex_unlock(&usbvision->lock);
1138                         return -EAGAIN;
1139                 }
1140                 start += PAGE_SIZE;
1141                 pos += PAGE_SIZE;
1142                 size -= PAGE_SIZE;
1143         }
1144
1145         mutex_unlock(&usbvision->lock);
1146         return 0;
1147 }
1148
1149
1150 /*
1151  * Here comes the stuff for radio on usbvision based devices
1152  *
1153  */
1154 static int usbvision_radio_open(struct file *file)
1155 {
1156         struct usb_usbvision *usbvision = video_drvdata(file);
1157         int errCode = 0;
1158
1159         PDEBUG(DBG_IO, "%s:", __func__);
1160
1161         mutex_lock(&usbvision->lock);
1162
1163         if (usbvision->user) {
1164                 dev_err(&usbvision->rdev->dev,
1165                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1166                                 __func__);
1167                 errCode = -EBUSY;
1168         }
1169         else {
1170                 if(PowerOnAtOpen) {
1171                         usbvision_reset_powerOffTimer(usbvision);
1172                         if (usbvision->power == 0) {
1173                                 usbvision_power_on(usbvision);
1174                                 usbvision_i2c_register(usbvision);
1175                         }
1176                 }
1177
1178                 /* Alternate interface 1 is is the biggest frame size */
1179                 errCode = usbvision_set_alternate(usbvision);
1180                 if (errCode < 0) {
1181                         usbvision->last_error = errCode;
1182                         errCode = -EBUSY;
1183                         goto out;
1184                 }
1185
1186                 // If so far no errors then we shall start the radio
1187                 usbvision->radio = 1;
1188                 call_all(usbvision, tuner, s_radio);
1189                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1190                 usbvision->user++;
1191         }
1192
1193         if (errCode) {
1194                 if (PowerOnAtOpen) {
1195                         usbvision_i2c_unregister(usbvision);
1196                         usbvision_power_off(usbvision);
1197                         usbvision->initialized = 0;
1198                 }
1199         }
1200 out:
1201         mutex_unlock(&usbvision->lock);
1202         return errCode;
1203 }
1204
1205
1206 static int usbvision_radio_close(struct file *file)
1207 {
1208         struct usb_usbvision *usbvision = video_drvdata(file);
1209         int errCode = 0;
1210
1211         PDEBUG(DBG_IO, "");
1212
1213         mutex_lock(&usbvision->lock);
1214
1215         /* Set packet size to 0 */
1216         usbvision->ifaceAlt=0;
1217         errCode = usb_set_interface(usbvision->dev, usbvision->iface,
1218                                     usbvision->ifaceAlt);
1219
1220         usbvision_audio_off(usbvision);
1221         usbvision->radio=0;
1222         usbvision->user--;
1223
1224         if (PowerOnAtOpen) {
1225                 usbvision_set_powerOffTimer(usbvision);
1226                 usbvision->initialized = 0;
1227         }
1228
1229         mutex_unlock(&usbvision->lock);
1230
1231         if (usbvision->remove_pending) {
1232                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1233                 usbvision_release(usbvision);
1234         }
1235
1236         PDEBUG(DBG_IO, "success");
1237         return errCode;
1238 }
1239
1240 //
1241 // Video registration stuff
1242 //
1243
1244 // Video template
1245 static const struct v4l2_file_operations usbvision_fops = {
1246         .owner             = THIS_MODULE,
1247         .open           = usbvision_v4l2_open,
1248         .release        = usbvision_v4l2_close,
1249         .read           = usbvision_v4l2_read,
1250         .mmap           = usbvision_v4l2_mmap,
1251         .ioctl          = video_ioctl2,
1252 /*      .poll          = video_poll, */
1253 };
1254
1255 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1256         .vidioc_querycap      = vidioc_querycap,
1257         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1258         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1259         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1260         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1261         .vidioc_reqbufs       = vidioc_reqbufs,
1262         .vidioc_querybuf      = vidioc_querybuf,
1263         .vidioc_qbuf          = vidioc_qbuf,
1264         .vidioc_dqbuf         = vidioc_dqbuf,
1265         .vidioc_s_std         = vidioc_s_std,
1266         .vidioc_enum_input    = vidioc_enum_input,
1267         .vidioc_g_input       = vidioc_g_input,
1268         .vidioc_s_input       = vidioc_s_input,
1269         .vidioc_queryctrl     = vidioc_queryctrl,
1270         .vidioc_g_audio       = vidioc_g_audio,
1271         .vidioc_s_audio       = vidioc_s_audio,
1272         .vidioc_g_ctrl        = vidioc_g_ctrl,
1273         .vidioc_s_ctrl        = vidioc_s_ctrl,
1274         .vidioc_streamon      = vidioc_streamon,
1275         .vidioc_streamoff     = vidioc_streamoff,
1276 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1277 /*      .vidiocgmbuf          = vidiocgmbuf, */
1278 #endif
1279         .vidioc_g_tuner       = vidioc_g_tuner,
1280         .vidioc_s_tuner       = vidioc_s_tuner,
1281         .vidioc_g_frequency   = vidioc_g_frequency,
1282         .vidioc_s_frequency   = vidioc_s_frequency,
1283 #ifdef CONFIG_VIDEO_ADV_DEBUG
1284         .vidioc_g_register    = vidioc_g_register,
1285         .vidioc_s_register    = vidioc_s_register,
1286 #endif
1287 };
1288
1289 static struct video_device usbvision_video_template = {
1290         .fops           = &usbvision_fops,
1291         .ioctl_ops      = &usbvision_ioctl_ops,
1292         .name           = "usbvision-video",
1293         .release        = video_device_release,
1294         .tvnorms              = USBVISION_NORMS,
1295         .current_norm         = V4L2_STD_PAL
1296 };
1297
1298
1299 // Radio template
1300 static const struct v4l2_file_operations usbvision_radio_fops = {
1301         .owner             = THIS_MODULE,
1302         .open           = usbvision_radio_open,
1303         .release        = usbvision_radio_close,
1304         .ioctl          = video_ioctl2,
1305 };
1306
1307 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1308         .vidioc_querycap      = vidioc_querycap,
1309         .vidioc_enum_input    = vidioc_enum_input,
1310         .vidioc_g_input       = vidioc_g_input,
1311         .vidioc_s_input       = vidioc_s_input,
1312         .vidioc_queryctrl     = vidioc_queryctrl,
1313         .vidioc_g_audio       = vidioc_g_audio,
1314         .vidioc_s_audio       = vidioc_s_audio,
1315         .vidioc_g_ctrl        = vidioc_g_ctrl,
1316         .vidioc_s_ctrl        = vidioc_s_ctrl,
1317         .vidioc_g_tuner       = vidioc_g_tuner,
1318         .vidioc_s_tuner       = vidioc_s_tuner,
1319         .vidioc_g_frequency   = vidioc_g_frequency,
1320         .vidioc_s_frequency   = vidioc_s_frequency,
1321 };
1322
1323 static struct video_device usbvision_radio_template = {
1324         .fops           = &usbvision_radio_fops,
1325         .name           = "usbvision-radio",
1326         .release        = video_device_release,
1327         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1328
1329         .tvnorms              = USBVISION_NORMS,
1330         .current_norm         = V4L2_STD_PAL
1331 };
1332
1333
1334 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1335                                         struct video_device *vdev_template,
1336                                         char *name)
1337 {
1338         struct usb_device *usb_dev = usbvision->dev;
1339         struct video_device *vdev;
1340
1341         if (usb_dev == NULL) {
1342                 dev_err(&usbvision->dev->dev,
1343                         "%s: usbvision->dev is not set\n", __func__);
1344                 return NULL;
1345         }
1346
1347         vdev = video_device_alloc();
1348         if (NULL == vdev) {
1349                 return NULL;
1350         }
1351         *vdev = *vdev_template;
1352         vdev->v4l2_dev = &usbvision->v4l2_dev;
1353         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1354         video_set_drvdata(vdev, usbvision);
1355         return vdev;
1356 }
1357
1358 // unregister video4linux devices
1359 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1360 {
1361         // Radio Device:
1362         if (usbvision->rdev) {
1363                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1364                        video_device_node_name(usbvision->rdev));
1365                 if (video_is_registered(usbvision->rdev)) {
1366                         video_unregister_device(usbvision->rdev);
1367                 } else {
1368                         video_device_release(usbvision->rdev);
1369                 }
1370                 usbvision->rdev = NULL;
1371         }
1372
1373         // Video Device:
1374         if (usbvision->vdev) {
1375                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1376                        video_device_node_name(usbvision->vdev));
1377                 if (video_is_registered(usbvision->vdev)) {
1378                         video_unregister_device(usbvision->vdev);
1379                 } else {
1380                         video_device_release(usbvision->vdev);
1381                 }
1382                 usbvision->vdev = NULL;
1383         }
1384 }
1385
1386 // register video4linux devices
1387 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1388 {
1389         // Video Device:
1390         usbvision->vdev = usbvision_vdev_init(usbvision,
1391                                               &usbvision_video_template,
1392                                               "USBVision Video");
1393         if (usbvision->vdev == NULL) {
1394                 goto err_exit;
1395         }
1396         if (video_register_device(usbvision->vdev,
1397                                   VFL_TYPE_GRABBER,
1398                                   video_nr)<0) {
1399                 goto err_exit;
1400         }
1401         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1402                usbvision->nr, video_device_node_name(usbvision->vdev));
1403
1404         // Radio Device:
1405         if (usbvision_device_data[usbvision->DevModel].Radio) {
1406                 // usbvision has radio
1407                 usbvision->rdev = usbvision_vdev_init(usbvision,
1408                                                       &usbvision_radio_template,
1409                                                       "USBVision Radio");
1410                 if (usbvision->rdev == NULL) {
1411                         goto err_exit;
1412                 }
1413                 if (video_register_device(usbvision->rdev,
1414                                           VFL_TYPE_RADIO,
1415                                           radio_nr)<0) {
1416                         goto err_exit;
1417                 }
1418                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1419                        usbvision->nr, video_device_node_name(usbvision->rdev));
1420         }
1421         // all done
1422         return 0;
1423
1424  err_exit:
1425         dev_err(&usbvision->dev->dev,
1426                 "USBVision[%d]: video_register_device() failed\n",
1427                         usbvision->nr);
1428         usbvision_unregister_video(usbvision);
1429         return -1;
1430 }
1431
1432 /*
1433  * usbvision_alloc()
1434  *
1435  * This code allocates the struct usb_usbvision.
1436  * It is filled with default values.
1437  *
1438  * Returns NULL on error, a pointer to usb_usbvision else.
1439  *
1440  */
1441 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1442                                              struct usb_interface *intf)
1443 {
1444         struct usb_usbvision *usbvision;
1445
1446         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1447         if (usbvision == NULL)
1448                 return NULL;
1449
1450         usbvision->dev = dev;
1451         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1452                 goto err_free;
1453
1454         mutex_init(&usbvision->lock);   /* available */
1455
1456         // prepare control urb for control messages during interrupts
1457         usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1458         if (usbvision->ctrlUrb == NULL)
1459                 goto err_unreg;
1460         init_waitqueue_head(&usbvision->ctrlUrb_wq);
1461
1462         usbvision_init_powerOffTimer(usbvision);
1463
1464         return usbvision;
1465
1466 err_unreg:
1467         v4l2_device_unregister(&usbvision->v4l2_dev);
1468 err_free:
1469         kfree(usbvision);
1470         return NULL;
1471 }
1472
1473 /*
1474  * usbvision_release()
1475  *
1476  * This code does final release of struct usb_usbvision. This happens
1477  * after the device is disconnected -and- all clients closed their files.
1478  *
1479  */
1480 static void usbvision_release(struct usb_usbvision *usbvision)
1481 {
1482         PDEBUG(DBG_PROBE, "");
1483
1484         mutex_lock(&usbvision->lock);
1485
1486         usbvision_reset_powerOffTimer(usbvision);
1487
1488         usbvision->initialized = 0;
1489
1490         mutex_unlock(&usbvision->lock);
1491
1492         usbvision_remove_sysfs(usbvision->vdev);
1493         usbvision_unregister_video(usbvision);
1494
1495         if (usbvision->ctrlUrb) {
1496                 usb_free_urb(usbvision->ctrlUrb);
1497         }
1498
1499         v4l2_device_unregister(&usbvision->v4l2_dev);
1500         kfree(usbvision);
1501
1502         PDEBUG(DBG_PROBE, "success");
1503 }
1504
1505
1506 /*********************** usb interface **********************************/
1507
1508 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1509 {
1510         int model;
1511
1512         if (usbvision == NULL)
1513                 return;
1514
1515         model = usbvision->DevModel;
1516         usbvision->palette = usbvision_v4l2_format[2]; // V4L2_PIX_FMT_RGB24;
1517
1518         if (usbvision_device_data[usbvision->DevModel].Vin_Reg2_override) {
1519                 usbvision->Vin_Reg2_Preset =
1520                         usbvision_device_data[usbvision->DevModel].Vin_Reg2;
1521         } else {
1522                 usbvision->Vin_Reg2_Preset = 0;
1523         }
1524
1525         usbvision->tvnormId = usbvision_device_data[model].VideoNorm;
1526
1527         usbvision->video_inputs = usbvision_device_data[model].VideoChannels;
1528         usbvision->ctl_input = 0;
1529
1530         /* This should be here to make i2c clients to be able to register */
1531         /* first switch off audio */
1532         usbvision_audio_off(usbvision);
1533         if (!PowerOnAtOpen) {
1534                 /* and then power up the noisy tuner */
1535                 usbvision_power_on(usbvision);
1536                 usbvision_i2c_register(usbvision);
1537         }
1538 }
1539
1540 /*
1541  * usbvision_probe()
1542  *
1543  * This procedure queries device descriptor and accepts the interface
1544  * if it looks like USBVISION video device
1545  *
1546  */
1547 static int __devinit usbvision_probe(struct usb_interface *intf,
1548                                      const struct usb_device_id *devid)
1549 {
1550         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1551         struct usb_interface *uif;
1552         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1553         const struct usb_host_interface *interface;
1554         struct usb_usbvision *usbvision = NULL;
1555         const struct usb_endpoint_descriptor *endpoint;
1556         int model,i;
1557
1558         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1559                                 dev->descriptor.idVendor,
1560                                 dev->descriptor.idProduct, ifnum);
1561
1562         model = devid->driver_info;
1563         if ( (model<0) || (model>=usbvision_device_data_size) ) {
1564                 PDEBUG(DBG_PROBE, "model out of bounds %d",model);
1565                 return -ENODEV;
1566         }
1567         printk(KERN_INFO "%s: %s found\n", __func__,
1568                                 usbvision_device_data[model].ModelString);
1569
1570         if (usbvision_device_data[model].Interface >= 0) {
1571                 interface = &dev->actconfig->interface[usbvision_device_data[model].Interface]->altsetting[0];
1572         } else {
1573                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1574         }
1575         endpoint = &interface->endpoint[1].desc;
1576         if (!usb_endpoint_xfer_isoc(endpoint)) {
1577                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1578                     __func__, ifnum);
1579                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1580                     __func__, endpoint->bmAttributes);
1581                 return -ENODEV;
1582         }
1583         if (usb_endpoint_dir_out(endpoint)) {
1584                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1585                     __func__, ifnum);
1586                 return -ENODEV;
1587         }
1588
1589         usbvision = usbvision_alloc(dev, intf);
1590         if (usbvision == NULL) {
1591                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1592                 return -ENOMEM;
1593         }
1594
1595         if (dev->descriptor.bNumConfigurations > 1) {
1596                 usbvision->bridgeType = BRIDGE_NT1004;
1597         } else if (model == DAZZLE_DVC_90_REV_1_SECAM) {
1598                 usbvision->bridgeType = BRIDGE_NT1005;
1599         } else {
1600                 usbvision->bridgeType = BRIDGE_NT1003;
1601         }
1602         PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType);
1603
1604         mutex_lock(&usbvision->lock);
1605
1606         /* compute alternate max packet sizes */
1607         uif = dev->actconfig->interface[0];
1608
1609         usbvision->num_alt=uif->num_altsetting;
1610         PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
1611         usbvision->alt_max_pkt_size = kmalloc(32*
1612                                               usbvision->num_alt,GFP_KERNEL);
1613         if (usbvision->alt_max_pkt_size == NULL) {
1614                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1615                 mutex_unlock(&usbvision->lock);
1616                 return -ENOMEM;
1617         }
1618
1619         for (i = 0; i < usbvision->num_alt ; i++) {
1620                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1621                                       wMaxPacketSize);
1622                 usbvision->alt_max_pkt_size[i] =
1623                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1624                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
1625                        usbvision->alt_max_pkt_size[i]);
1626         }
1627
1628
1629         usbvision->nr = usbvision_nr++;
1630
1631         usbvision->have_tuner = usbvision_device_data[model].Tuner;
1632         if (usbvision->have_tuner) {
1633                 usbvision->tuner_type = usbvision_device_data[model].TunerType;
1634         }
1635
1636         usbvision->DevModel = model;
1637         usbvision->remove_pending = 0;
1638         usbvision->iface = ifnum;
1639         usbvision->ifaceAlt = 0;
1640         usbvision->video_endp = endpoint->bEndpointAddress;
1641         usbvision->isocPacketSize = 0;
1642         usbvision->usb_bandwidth = 0;
1643         usbvision->user = 0;
1644         usbvision->streaming = Stream_Off;
1645         usbvision_configure_video(usbvision);
1646         usbvision_register_video(usbvision);
1647         mutex_unlock(&usbvision->lock);
1648
1649         usbvision_create_sysfs(usbvision->vdev);
1650
1651         PDEBUG(DBG_PROBE, "success");
1652         return 0;
1653 }
1654
1655
1656 /*
1657  * usbvision_disconnect()
1658  *
1659  * This procedure stops all driver activity, deallocates interface-private
1660  * structure (pointed by 'ptr') and after that driver should be removable
1661  * with no ill consequences.
1662  *
1663  */
1664 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1665 {
1666         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1667
1668         PDEBUG(DBG_PROBE, "");
1669
1670         if (usbvision == NULL) {
1671                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1672                 return;
1673         }
1674
1675         mutex_lock(&usbvision->lock);
1676
1677         // At this time we ask to cancel outstanding URBs
1678         usbvision_stop_isoc(usbvision);
1679
1680         v4l2_device_disconnect(&usbvision->v4l2_dev);
1681
1682         if (usbvision->power) {
1683                 usbvision_i2c_unregister(usbvision);
1684                 usbvision_power_off(usbvision);
1685         }
1686         usbvision->remove_pending = 1;  // Now all ISO data will be ignored
1687
1688         usb_put_dev(usbvision->dev);
1689         usbvision->dev = NULL;  // USB device is no more
1690
1691         mutex_unlock(&usbvision->lock);
1692
1693         if (usbvision->user) {
1694                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1695                        __func__);
1696                 wake_up_interruptible(&usbvision->wait_frame);
1697                 wake_up_interruptible(&usbvision->wait_stream);
1698         } else {
1699                 usbvision_release(usbvision);
1700         }
1701
1702         PDEBUG(DBG_PROBE, "success");
1703 }
1704
1705 static struct usb_driver usbvision_driver = {
1706         .name           = "usbvision",
1707         .id_table       = usbvision_table,
1708         .probe          = usbvision_probe,
1709         .disconnect     = __devexit_p(usbvision_disconnect),
1710 };
1711
1712 /*
1713  * usbvision_init()
1714  *
1715  * This code is run to initialize the driver.
1716  *
1717  */
1718 static int __init usbvision_init(void)
1719 {
1720         int errCode;
1721
1722         PDEBUG(DBG_PROBE, "");
1723
1724         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1725         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1726         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1727
1728         /* disable planar mode support unless compression enabled */
1729         if (isocMode != ISOC_MODE_COMPRESS ) {
1730                 // FIXME : not the right way to set supported flag
1731                 usbvision_v4l2_format[6].supported = 0; // V4L2_PIX_FMT_YVU420
1732                 usbvision_v4l2_format[7].supported = 0; // V4L2_PIX_FMT_YUV422P
1733         }
1734
1735         errCode = usb_register(&usbvision_driver);
1736
1737         if (errCode == 0) {
1738                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1739                 PDEBUG(DBG_PROBE, "success");
1740         }
1741         return errCode;
1742 }
1743
1744 static void __exit usbvision_exit(void)
1745 {
1746  PDEBUG(DBG_PROBE, "");
1747
1748  usb_deregister(&usbvision_driver);
1749  PDEBUG(DBG_PROBE, "success");
1750 }
1751
1752 module_init(usbvision_init);
1753 module_exit(usbvision_exit);
1754
1755 /*
1756  * Overrides for Emacs so that we follow Linus's tabbing style.
1757  * ---------------------------------------------------------------------------
1758  * Local variables:
1759  * c-basic-offset: 8
1760  * End:
1761  */