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/kernel.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/highmem.h>
  54 #include <linux/vmalloc.h>
  55 #include <linux/module.h>
  56 #include <linux/init.h>
  57 #include <linux/spinlock.h>
  58 #include <linux/io.h>
  59 #include <linux/videodev2.h>
  60 #include <linux/i2c.h>
  61
  62 #include <media/saa7115.h>
  63 #include <media/v4l2-common.h>
  64 #include <media/v4l2-ioctl.h>
  65 #include <media/tuner.h>
  66
  67 #include <linux/workqueue.h>
  68
  69 #include "usbvision.h"
  70 #include "usbvision-cards.h"
  71
  72 #define DRIVER_AUTHOR                                   \
  73         "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_VERSION_STRING "0.9.11"
  80
  81 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  82
  83
  84 #ifdef USBVISION_DEBUG
  85         #define PDEBUG(level, fmt, args...) { \
  86                 if (video_debug & (level)) \
  87                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  88                                 __func__, __LINE__ , ## args); \
  89         }
  90 #else
  91         #define PDEBUG(level, fmt, args...) do {} while (0)
  92 #endif
  93
  94 #define DBG_IO          (1 << 1)
  95 #define DBG_PROBE       (1 << 2)
  96 #define DBG_MMAP        (1 << 3)
  97
  98 /* String operations */
  99 #define rmspace(str)    while (*str == ' ') str++;
 100 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
 101
 102
 103 /* sequential number of usbvision device */
 104 static int usbvision_nr;
 105
 106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 107         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 108         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 109         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 110         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 111         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 112         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 113         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 114         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 115 };
 116
 117 /* Function prototypes */
 118 static void usbvision_release(struct usb_usbvision *usbvision);
 119
 120 /* Default initialization of device driver parameters */
 121 /* Set the default format for ISOC endpoint */
 122 static int isoc_mode = ISOC_MODE_COMPRESS;
 123 /* Set the default Debug Mode of the device driver */
 124 static int video_debug;
 125 /* Set the default device to power on at startup */
 126 static int power_on_at_open = 1;
 127 /* Sequential Number of Video Device */
 128 static int video_nr = -1;
 129 /* Sequential Number of Radio Device */
 130 static int radio_nr = -1;
 131
 132 /* Grab parameters for the device driver */
 133
 134 /* Showing parameters under SYSFS */
 135 module_param(isoc_mode, int, 0444);
 136 module_param(video_debug, int, 0444);
 137 module_param(power_on_at_open, int, 0444);
 138 module_param(video_nr, int, 0444);
 139 module_param(radio_nr, int, 0444);
 140
 141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
 144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 146
 147
 148 /* Misc stuff */
 149 MODULE_AUTHOR(DRIVER_AUTHOR);
 150 MODULE_DESCRIPTION(DRIVER_DESC);
 151 MODULE_LICENSE(DRIVER_LICENSE);
 152 MODULE_VERSION(USBVISION_VERSION_STRING);
 153 MODULE_ALIAS(DRIVER_ALIAS);
 154
 155
 156 /*****************************************************************************/
 157 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 158 /* Device information is located at /sys/class/video4linux/video0            */
 159 /* Device parameters information is located at /sys/module/usbvision         */
 160 /* Device USB Information is located at                                      */
 161 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 162 /*****************************************************************************/
 163
 164 #define YES_NO(x) ((x) ? "Yes" : "No")
 165
 166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 167 {
 168         struct video_device *vdev =
 169                 container_of(cd, struct video_device, dev);
 170         return video_get_drvdata(vdev);
 171 }
 172
 173 static ssize_t show_version(struct device *cd,
 174                             struct device_attribute *attr, char *buf)
 175 {
 176         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 177 }
 178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 179
 180 static ssize_t show_model(struct device *cd,
 181                           struct device_attribute *attr, char *buf)
 182 {
 183         struct video_device *vdev =
 184                 container_of(cd, struct video_device, dev);
 185         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 186         return sprintf(buf, "%s\n",
 187                        usbvision_device_data[usbvision->dev_model].model_string);
 188 }
 189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 190
 191 static ssize_t show_hue(struct device *cd,
 192                         struct device_attribute *attr, char *buf)
 193 {
 194         struct video_device *vdev =
 195                 container_of(cd, struct video_device, dev);
 196         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 197         struct v4l2_control ctrl;
 198         ctrl.id = V4L2_CID_HUE;
 199         ctrl.value = 0;
 200         if (usbvision->user)
 201                 call_all(usbvision, core, g_ctrl, &ctrl);
 202         return sprintf(buf, "%d\n", ctrl.value);
 203 }
 204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 205
 206 static ssize_t show_contrast(struct device *cd,
 207                              struct device_attribute *attr, char *buf)
 208 {
 209         struct video_device *vdev =
 210                 container_of(cd, struct video_device, dev);
 211         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 212         struct v4l2_control ctrl;
 213         ctrl.id = V4L2_CID_CONTRAST;
 214         ctrl.value = 0;
 215         if (usbvision->user)
 216                 call_all(usbvision, core, g_ctrl, &ctrl);
 217         return sprintf(buf, "%d\n", ctrl.value);
 218 }
 219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 220
 221 static ssize_t show_brightness(struct device *cd,
 222                                struct device_attribute *attr, char *buf)
 223 {
 224         struct video_device *vdev =
 225                 container_of(cd, struct video_device, dev);
 226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 227         struct v4l2_control ctrl;
 228         ctrl.id = V4L2_CID_BRIGHTNESS;
 229         ctrl.value = 0;
 230         if (usbvision->user)
 231                 call_all(usbvision, core, g_ctrl, &ctrl);
 232         return sprintf(buf, "%d\n", ctrl.value);
 233 }
 234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 235
 236 static ssize_t show_saturation(struct device *cd,
 237                                struct device_attribute *attr, char *buf)
 238 {
 239         struct video_device *vdev =
 240                 container_of(cd, struct video_device, dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_SATURATION;
 244         ctrl.value = 0;
 245         if (usbvision->user)
 246                 call_all(usbvision, core, g_ctrl, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 250
 251 static ssize_t show_streaming(struct device *cd,
 252                               struct device_attribute *attr, char *buf)
 253 {
 254         struct video_device *vdev =
 255                 container_of(cd, struct video_device, dev);
 256         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 257         return sprintf(buf, "%s\n",
 258                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 259 }
 260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 261
 262 static ssize_t show_compression(struct device *cd,
 263                                 struct device_attribute *attr, char *buf)
 264 {
 265         struct video_device *vdev =
 266                 container_of(cd, struct video_device, dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         return sprintf(buf, "%s\n",
 269                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 270 }
 271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 272
 273 static ssize_t show_device_bridge(struct device *cd,
 274                                   struct device_attribute *attr, char *buf)
 275 {
 276         struct video_device *vdev =
 277                 container_of(cd, struct video_device, dev);
 278         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 279         return sprintf(buf, "%d\n", usbvision->bridge_type);
 280 }
 281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 282
 283 static void usbvision_create_sysfs(struct video_device *vdev)
 284 {
 285         int res;
 286
 287         if (!vdev)
 288                 return;
 289         do {
 290                 res = device_create_file(&vdev->dev, &dev_attr_version);
 291                 if (res < 0)
 292                         break;
 293                 res = device_create_file(&vdev->dev, &dev_attr_model);
 294                 if (res < 0)
 295                         break;
 296                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 297                 if (res < 0)
 298                         break;
 299                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 300                 if (res < 0)
 301                         break;
 302                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 303                 if (res < 0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 306                 if (res < 0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 309                 if (res < 0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 312                 if (res < 0)
 313                         break;
 314                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 315                 if (res >= 0)
 316                         return;
 317         } while (0);
 318
 319         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 320 }
 321
 322 static void usbvision_remove_sysfs(struct video_device *vdev)
 323 {
 324         if (vdev) {
 325                 device_remove_file(&vdev->dev, &dev_attr_version);
 326                 device_remove_file(&vdev->dev, &dev_attr_model);
 327                 device_remove_file(&vdev->dev, &dev_attr_hue);
 328                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 329                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 330                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 331                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 332                 device_remove_file(&vdev->dev, &dev_attr_compression);
 333                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 334         }
 335 }
 336
 337 /*
 338  * usbvision_open()
 339  *
 340  * This is part of Video 4 Linux API. The driver can be opened by one
 341  * client only (checks internal counter 'usbvision->user'). The procedure
 342  * then allocates buffers needed for video processing.
 343  *
 344  */
 345 static int usbvision_v4l2_open(struct file *file)
 346 {
 347         struct usb_usbvision *usbvision = video_drvdata(file);
 348         int err_code = 0;
 349
 350         PDEBUG(DBG_IO, "open");
 351
 352         usbvision_reset_power_off_timer(usbvision);
 353
 354         if (usbvision->user)
 355                 err_code = -EBUSY;
 356         else {
 357                 /* Allocate memory for the scratch ring buffer */
 358                 err_code = usbvision_scratch_alloc(usbvision);
 359                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 360                         /* Allocate intermediate decompression buffers
 361                            only if needed */
 362                         err_code = usbvision_decompress_alloc(usbvision);
 363                 }
 364                 if (err_code) {
 365                         /* Deallocate all buffers if trouble */
 366                         usbvision_scratch_free(usbvision);
 367                         usbvision_decompress_free(usbvision);
 368                 }
 369         }
 370
 371         /* If so far no errors then we shall start the camera */
 372         if (!err_code) {
 373                 if (usbvision->power == 0) {
 374                         usbvision_power_on(usbvision);
 375                         usbvision_i2c_register(usbvision);
 376                 }
 377
 378                 /* Send init sequence only once, it's large! */
 379                 if (!usbvision->initialized) {
 380                         int setup_ok = 0;
 381                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 382                         if (setup_ok)
 383                                 usbvision->initialized = 1;
 384                         else
 385                                 err_code = -EBUSY;
 386                 }
 387
 388                 if (!err_code) {
 389                         usbvision_begin_streaming(usbvision);
 390                         err_code = usbvision_init_isoc(usbvision);
 391                         /* device must be initialized before isoc transfer */
 392                         usbvision_muxsel(usbvision, 0);
 393                         usbvision->user++;
 394                 } else {
 395                         if (power_on_at_open) {
 396                                 usbvision_i2c_unregister(usbvision);
 397                                 usbvision_power_off(usbvision);
 398                                 usbvision->initialized = 0;
 399                         }
 400                 }
 401         }
 402
 403         /* prepare queues */
 404         usbvision_empty_framequeues(usbvision);
 405
 406         PDEBUG(DBG_IO, "success");
 407         return err_code;
 408 }
 409
 410 /*
 411  * usbvision_v4l2_close()
 412  *
 413  * This is part of Video 4 Linux API. The procedure
 414  * stops streaming and deallocates all buffers that were earlier
 415  * allocated in usbvision_v4l2_open().
 416  *
 417  */
 418 static int usbvision_v4l2_close(struct file *file)
 419 {
 420         struct usb_usbvision *usbvision = video_drvdata(file);
 421
 422         PDEBUG(DBG_IO, "close");
 423
 424         usbvision_audio_off(usbvision);
 425         usbvision_restart_isoc(usbvision);
 426         usbvision_stop_isoc(usbvision);
 427
 428         usbvision_decompress_free(usbvision);
 429         usbvision_frames_free(usbvision);
 430         usbvision_empty_framequeues(usbvision);
 431         usbvision_scratch_free(usbvision);
 432
 433         usbvision->user--;
 434
 435         if (power_on_at_open) {
 436                 /* power off in a little while
 437                    to avoid off/on every close/open short sequences */
 438                 usbvision_set_power_off_timer(usbvision);
 439                 usbvision->initialized = 0;
 440         }
 441
 442         if (usbvision->remove_pending) {
 443                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 444                 usbvision_release(usbvision);
 445         }
 446
 447         PDEBUG(DBG_IO, "success");
 448         return 0;
 449 }
 450
 451
 452 /*
 453  * usbvision_ioctl()
 454  *
 455  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 456  *
 457  */
 458 #ifdef CONFIG_VIDEO_ADV_DEBUG
 459 static int vidioc_g_register(struct file *file, void *priv,
 460                                 struct v4l2_dbg_register *reg)
 461 {
 462         struct usb_usbvision *usbvision = video_drvdata(file);
 463         int err_code;
 464
 465         if (!v4l2_chip_match_host(&reg->match))
 466                 return -EINVAL;
 467         /* NT100x has a 8-bit register space */
 468         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 469         if (err_code < 0) {
 470                 dev_err(&usbvision->vdev->dev,
 471                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 472                                 __func__, err_code);
 473                 return err_code;
 474         }
 475         reg->val = err_code;
 476         reg->size = 1;
 477         return 0;
 478 }
 479
 480 static int vidioc_s_register(struct file *file, void *priv,
 481                                 struct v4l2_dbg_register *reg)
 482 {
 483         struct usb_usbvision *usbvision = video_drvdata(file);
 484         int err_code;
 485
 486         if (!v4l2_chip_match_host(&reg->match))
 487                 return -EINVAL;
 488         /* NT100x has a 8-bit register space */
 489         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 490         if (err_code < 0) {
 491                 dev_err(&usbvision->vdev->dev,
 492                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 493                                 __func__, err_code);
 494                 return err_code;
 495         }
 496         return 0;
 497 }
 498 #endif
 499
 500 static int vidioc_querycap(struct file *file, void  *priv,
 501                                         struct v4l2_capability *vc)
 502 {
 503         struct usb_usbvision *usbvision = video_drvdata(file);
 504
 505         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 506         strlcpy(vc->card,
 507                 usbvision_device_data[usbvision->dev_model].model_string,
 508                 sizeof(vc->card));
 509         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 510         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 511                 V4L2_CAP_AUDIO |
 512                 V4L2_CAP_READWRITE |
 513                 V4L2_CAP_STREAMING |
 514                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 515         return 0;
 516 }
 517
 518 static int vidioc_enum_input(struct file *file, void *priv,
 519                                 struct v4l2_input *vi)
 520 {
 521         struct usb_usbvision *usbvision = video_drvdata(file);
 522         int chan;
 523
 524         if (vi->index >= usbvision->video_inputs)
 525                 return -EINVAL;
 526         if (usbvision->have_tuner)
 527                 chan = vi->index;
 528         else
 529                 chan = vi->index + 1; /* skip Television string*/
 530
 531         /* Determine the requested input characteristics
 532            specific for each usbvision card model */
 533         switch (chan) {
 534         case 0:
 535                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 536                         strcpy(vi->name, "White Video Input");
 537                 } else {
 538                         strcpy(vi->name, "Television");
 539                         vi->type = V4L2_INPUT_TYPE_TUNER;
 540                         vi->audioset = 1;
 541                         vi->tuner = chan;
 542                         vi->std = USBVISION_NORMS;
 543                 }
 544                 break;
 545         case 1:
 546                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 547                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 548                         strcpy(vi->name, "Green Video Input");
 549                 else
 550                         strcpy(vi->name, "Composite Video Input");
 551                 vi->std = V4L2_STD_PAL;
 552                 break;
 553         case 2:
 554                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 555                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 556                         strcpy(vi->name, "Yellow Video Input");
 557                 else
 558                         strcpy(vi->name, "S-Video Input");
 559                 vi->std = V4L2_STD_PAL;
 560                 break;
 561         case 3:
 562                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 563                 strcpy(vi->name, "Red Video Input");
 564                 vi->std = V4L2_STD_PAL;
 565                 break;
 566         }
 567         return 0;
 568 }
 569
 570 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 571 {
 572         struct usb_usbvision *usbvision = video_drvdata(file);
 573
 574         *input = usbvision->ctl_input;
 575         return 0;
 576 }
 577
 578 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 579 {
 580         struct usb_usbvision *usbvision = video_drvdata(file);
 581
 582         if (input >= usbvision->video_inputs)
 583                 return -EINVAL;
 584
 585         usbvision_muxsel(usbvision, input);
 586         usbvision_set_input(usbvision);
 587         usbvision_set_output(usbvision,
 588                              usbvision->curwidth,
 589                              usbvision->curheight);
 590         return 0;
 591 }
 592
 593 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
 594 {
 595         struct usb_usbvision *usbvision = video_drvdata(file);
 596
 597         usbvision->tvnorm_id = *id;
 598
 599         call_all(usbvision, core, s_std, usbvision->tvnorm_id);
 600         /* propagate the change to the decoder */
 601         usbvision_muxsel(usbvision, usbvision->ctl_input);
 602
 603         return 0;
 604 }
 605
 606 static int vidioc_g_tuner(struct file *file, void *priv,
 607                                 struct v4l2_tuner *vt)
 608 {
 609         struct usb_usbvision *usbvision = video_drvdata(file);
 610
 611         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
 612                 return -EINVAL;
 613         if (usbvision->radio) {
 614                 strcpy(vt->name, "Radio");
 615                 vt->type = V4L2_TUNER_RADIO;
 616         } else {
 617                 strcpy(vt->name, "Television");
 618         }
 619         /* Let clients fill in the remainder of this struct */
 620         call_all(usbvision, tuner, g_tuner, vt);
 621
 622         return 0;
 623 }
 624
 625 static int vidioc_s_tuner(struct file *file, void *priv,
 626                                 struct v4l2_tuner *vt)
 627 {
 628         struct usb_usbvision *usbvision = video_drvdata(file);
 629
 630         /* Only no or one tuner for now */
 631         if (!usbvision->have_tuner || vt->index)
 632                 return -EINVAL;
 633         /* let clients handle this */
 634         call_all(usbvision, tuner, s_tuner, vt);
 635
 636         return 0;
 637 }
 638
 639 static int vidioc_g_frequency(struct file *file, void *priv,
 640                                 struct v4l2_frequency *freq)
 641 {
 642         struct usb_usbvision *usbvision = video_drvdata(file);
 643
 644         freq->tuner = 0; /* Only one tuner */
 645         if (usbvision->radio)
 646                 freq->type = V4L2_TUNER_RADIO;
 647         else
 648                 freq->type = V4L2_TUNER_ANALOG_TV;
 649         freq->frequency = usbvision->freq;
 650
 651         return 0;
 652 }
 653
 654 static int vidioc_s_frequency(struct file *file, void *priv,
 655                                 struct v4l2_frequency *freq)
 656 {
 657         struct usb_usbvision *usbvision = video_drvdata(file);
 658
 659         /* Only no or one tuner for now */
 660         if (!usbvision->have_tuner || freq->tuner)
 661                 return -EINVAL;
 662
 663         usbvision->freq = freq->frequency;
 664         call_all(usbvision, tuner, s_frequency, freq);
 665
 666         return 0;
 667 }
 668
 669 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 670 {
 671         struct usb_usbvision *usbvision = video_drvdata(file);
 672
 673         if (usbvision->radio)
 674                 strcpy(a->name, "Radio");
 675         else
 676                 strcpy(a->name, "TV");
 677
 678         return 0;
 679 }
 680
 681 static int vidioc_s_audio(struct file *file, void *fh,
 682                           struct v4l2_audio *a)
 683 {
 684         if (a->index)
 685                 return -EINVAL;
 686         return 0;
 687 }
 688
 689 static int vidioc_queryctrl(struct file *file, void *priv,
 690                             struct v4l2_queryctrl *ctrl)
 691 {
 692         struct usb_usbvision *usbvision = video_drvdata(file);
 693
 694         call_all(usbvision, core, queryctrl, ctrl);
 695
 696         if (!ctrl->type)
 697                 return -EINVAL;
 698
 699         return 0;
 700 }
 701
 702 static int vidioc_g_ctrl(struct file *file, void *priv,
 703                                 struct v4l2_control *ctrl)
 704 {
 705         struct usb_usbvision *usbvision = video_drvdata(file);
 706
 707         call_all(usbvision, core, g_ctrl, ctrl);
 708         return 0;
 709 }
 710
 711 static int vidioc_s_ctrl(struct file *file, void *priv,
 712                                 struct v4l2_control *ctrl)
 713 {
 714         struct usb_usbvision *usbvision = video_drvdata(file);
 715
 716         call_all(usbvision, core, s_ctrl, ctrl);
 717         return 0;
 718 }
 719
 720 static int vidioc_reqbufs(struct file *file,
 721                            void *priv, struct v4l2_requestbuffers *vr)
 722 {
 723         struct usb_usbvision *usbvision = video_drvdata(file);
 724         int ret;
 725
 726         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 727
 728         /* Check input validity:
 729            the user must do a VIDEO CAPTURE and MMAP method. */
 730         if (vr->memory != V4L2_MEMORY_MMAP)
 731                 return -EINVAL;
 732
 733         if (usbvision->streaming == stream_on) {
 734                 ret = usbvision_stream_interrupt(usbvision);
 735                 if (ret)
 736                         return ret;
 737         }
 738
 739         usbvision_frames_free(usbvision);
 740         usbvision_empty_framequeues(usbvision);
 741         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 742
 743         usbvision->cur_frame = NULL;
 744
 745         return 0;
 746 }
 747
 748 static int vidioc_querybuf(struct file *file,
 749                             void *priv, struct v4l2_buffer *vb)
 750 {
 751         struct usb_usbvision *usbvision = video_drvdata(file);
 752         struct usbvision_frame *frame;
 753
 754         /* FIXME : must control
 755            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 756         if (vb->index >= usbvision->num_frames)
 757                 return -EINVAL;
 758         /* Updating the corresponding frame state */
 759         vb->flags = 0;
 760         frame = &usbvision->frame[vb->index];
 761         if (frame->grabstate >= frame_state_ready)
 762                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 763         if (frame->grabstate >= frame_state_done)
 764                 vb->flags |= V4L2_BUF_FLAG_DONE;
 765         if (frame->grabstate == frame_state_unused)
 766                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 767         vb->memory = V4L2_MEMORY_MMAP;
 768
 769         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 770
 771         vb->memory = V4L2_MEMORY_MMAP;
 772         vb->field = V4L2_FIELD_NONE;
 773         vb->length = usbvision->curwidth *
 774                 usbvision->curheight *
 775                 usbvision->palette.bytes_per_pixel;
 776         vb->timestamp = usbvision->frame[vb->index].timestamp;
 777         vb->sequence = usbvision->frame[vb->index].sequence;
 778         return 0;
 779 }
 780
 781 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 782 {
 783         struct usb_usbvision *usbvision = video_drvdata(file);
 784         struct usbvision_frame *frame;
 785         unsigned long lock_flags;
 786
 787         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 788         if (vb->index >= usbvision->num_frames)
 789                 return -EINVAL;
 790
 791         frame = &usbvision->frame[vb->index];
 792
 793         if (frame->grabstate != frame_state_unused)
 794                 return -EAGAIN;
 795
 796         /* Mark it as ready and enqueue frame */
 797         frame->grabstate = frame_state_ready;
 798         frame->scanstate = scan_state_scanning;
 799         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 800
 801         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 802
 803         /* set v4l2_format index */
 804         frame->v4l2_format = usbvision->palette;
 805
 806         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 807         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 808         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 809
 810         return 0;
 811 }
 812
 813 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 814 {
 815         struct usb_usbvision *usbvision = video_drvdata(file);
 816         int ret;
 817         struct usbvision_frame *f;
 818         unsigned long lock_flags;
 819
 820         if (list_empty(&(usbvision->outqueue))) {
 821                 if (usbvision->streaming == stream_idle)
 822                         return -EINVAL;
 823                 ret = wait_event_interruptible
 824                         (usbvision->wait_frame,
 825                          !list_empty(&(usbvision->outqueue)));
 826                 if (ret)
 827                         return ret;
 828         }
 829
 830         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 831         f = list_entry(usbvision->outqueue.next,
 832                        struct usbvision_frame, frame);
 833         list_del(usbvision->outqueue.next);
 834         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 835
 836         f->grabstate = frame_state_unused;
 837
 838         vb->memory = V4L2_MEMORY_MMAP;
 839         vb->flags = V4L2_BUF_FLAG_MAPPED |
 840                 V4L2_BUF_FLAG_QUEUED |
 841                 V4L2_BUF_FLAG_DONE;
 842         vb->index = f->index;
 843         vb->sequence = f->sequence;
 844         vb->timestamp = f->timestamp;
 845         vb->field = V4L2_FIELD_NONE;
 846         vb->bytesused = f->scanlength;
 847
 848         return 0;
 849 }
 850
 851 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 852 {
 853         struct usb_usbvision *usbvision = video_drvdata(file);
 854
 855         usbvision->streaming = stream_on;
 856         call_all(usbvision, video, s_stream, 1);
 857
 858         return 0;
 859 }
 860
 861 static int vidioc_streamoff(struct file *file,
 862                             void *priv, enum v4l2_buf_type type)
 863 {
 864         struct usb_usbvision *usbvision = video_drvdata(file);
 865
 866         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 867                 return -EINVAL;
 868
 869         if (usbvision->streaming == stream_on) {
 870                 usbvision_stream_interrupt(usbvision);
 871                 /* Stop all video streamings */
 872                 call_all(usbvision, video, s_stream, 0);
 873         }
 874         usbvision_empty_framequeues(usbvision);
 875
 876         return 0;
 877 }
 878
 879 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 880                                         struct v4l2_fmtdesc *vfd)
 881 {
 882         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 883                 return -EINVAL;
 884         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 885         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 886         return 0;
 887 }
 888
 889 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 890                                         struct v4l2_format *vf)
 891 {
 892         struct usb_usbvision *usbvision = video_drvdata(file);
 893         vf->fmt.pix.width = usbvision->curwidth;
 894         vf->fmt.pix.height = usbvision->curheight;
 895         vf->fmt.pix.pixelformat = usbvision->palette.format;
 896         vf->fmt.pix.bytesperline =
 897                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 898         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 899         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 900         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 901
 902         return 0;
 903 }
 904
 905 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 906                                struct v4l2_format *vf)
 907 {
 908         struct usb_usbvision *usbvision = video_drvdata(file);
 909         int format_idx;
 910
 911         /* Find requested format in available ones */
 912         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 913                 if (vf->fmt.pix.pixelformat ==
 914                    usbvision_v4l2_format[format_idx].format) {
 915                         usbvision->palette = usbvision_v4l2_format[format_idx];
 916                         break;
 917                 }
 918         }
 919         /* robustness */
 920         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 921                 return -EINVAL;
 922         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 923         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 924
 925         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 926                 usbvision->palette.bytes_per_pixel;
 927         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 928
 929         return 0;
 930 }
 931
 932 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 933                                struct v4l2_format *vf)
 934 {
 935         struct usb_usbvision *usbvision = video_drvdata(file);
 936         int ret;
 937
 938         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 939         if (ret)
 940                 return ret;
 941
 942         /* stop io in case it is already in progress */
 943         if (usbvision->streaming == stream_on) {
 944                 ret = usbvision_stream_interrupt(usbvision);
 945                 if (ret)
 946                         return ret;
 947         }
 948         usbvision_frames_free(usbvision);
 949         usbvision_empty_framequeues(usbvision);
 950
 951         usbvision->cur_frame = NULL;
 952
 953         /* by now we are committed to the new data... */
 954         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 955
 956         return 0;
 957 }
 958
 959 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
 960                       size_t count, loff_t *ppos)
 961 {
 962         struct usb_usbvision *usbvision = video_drvdata(file);
 963         int noblock = file->f_flags & O_NONBLOCK;
 964         unsigned long lock_flags;
 965         int ret, i;
 966         struct usbvision_frame *frame;
 967
 968         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 969                (unsigned long)count, noblock);
 970
 971         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 972                 return -EFAULT;
 973
 974         /* This entry point is compatible with the mmap routines
 975            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 976            to get frames or call read on the device. */
 977         if (!usbvision->num_frames) {
 978                 /* First, allocate some frames to work with
 979                    if this has not been done with VIDIOC_REQBUF */
 980                 usbvision_frames_free(usbvision);
 981                 usbvision_empty_framequeues(usbvision);
 982                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 983         }
 984
 985         if (usbvision->streaming != stream_on) {
 986                 /* no stream is running, make it running ! */
 987                 usbvision->streaming = stream_on;
 988                 call_all(usbvision, video, s_stream, 1);
 989         }
 990
 991         /* Then, enqueue as many frames as possible
 992            (like a user of VIDIOC_QBUF would do) */
 993         for (i = 0; i < usbvision->num_frames; i++) {
 994                 frame = &usbvision->frame[i];
 995                 if (frame->grabstate == frame_state_unused) {
 996                         /* Mark it as ready and enqueue frame */
 997                         frame->grabstate = frame_state_ready;
 998                         frame->scanstate = scan_state_scanning;
 999                         /* Accumulated in usbvision_parse_data() */
1000                         frame->scanlength = 0;
1001
1002                         /* set v4l2_format index */
1003                         frame->v4l2_format = usbvision->palette;
1004
1005                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1006                         list_add_tail(&frame->frame, &usbvision->inqueue);
1007                         spin_unlock_irqrestore(&usbvision->queue_lock,
1008                                                lock_flags);
1009                 }
1010         }
1011
1012         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1013         if (list_empty(&(usbvision->outqueue))) {
1014                 if (noblock)
1015                         return -EAGAIN;
1016
1017                 ret = wait_event_interruptible
1018                         (usbvision->wait_frame,
1019                          !list_empty(&(usbvision->outqueue)));
1020                 if (ret)
1021                         return ret;
1022         }
1023
1024         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1025         frame = list_entry(usbvision->outqueue.next,
1026                            struct usbvision_frame, frame);
1027         list_del(usbvision->outqueue.next);
1028         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1029
1030         /* An error returns an empty frame */
1031         if (frame->grabstate == frame_state_error) {
1032                 frame->bytes_read = 0;
1033                 return 0;
1034         }
1035
1036         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1037                __func__,
1038                frame->index, frame->bytes_read, frame->scanlength);
1039
1040         /* copy bytes to user space; we allow for partials reads */
1041         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1042                 count = frame->scanlength - frame->bytes_read;
1043
1044         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1045                 return -EFAULT;
1046
1047         frame->bytes_read += count;
1048         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1049                __func__,
1050                (unsigned long)count, frame->bytes_read);
1051
1052         /* For now, forget the frame if it has not been read in one shot. */
1053 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1054                 frame->bytes_read = 0;
1055
1056                 /* Mark it as available to be used again. */
1057                 frame->grabstate = frame_state_unused;
1058 /*      } */
1059
1060         return count;
1061 }
1062
1063 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1064 {
1065         unsigned long size = vma->vm_end - vma->vm_start,
1066                 start = vma->vm_start;
1067         void *pos;
1068         u32 i;
1069         struct usb_usbvision *usbvision = video_drvdata(file);
1070
1071         PDEBUG(DBG_MMAP, "mmap");
1072
1073         if (!USBVISION_IS_OPERATIONAL(usbvision))
1074                 return -EFAULT;
1075
1076         if (!(vma->vm_flags & VM_WRITE) ||
1077             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1078                 return -EINVAL;
1079         }
1080
1081         for (i = 0; i < usbvision->num_frames; i++) {
1082                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1083                     vma->vm_pgoff)
1084                         break;
1085         }
1086         if (i == usbvision->num_frames) {
1087                 PDEBUG(DBG_MMAP,
1088                        "mmap: user supplied mapping address is out of range");
1089                 return -EINVAL;
1090         }
1091
1092         /* VM_IO is eventually going to replace PageReserved altogether */
1093         vma->vm_flags |= VM_IO;
1094         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1095
1096         pos = usbvision->frame[i].data;
1097         while (size > 0) {
1098                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1099                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1100                         return -EAGAIN;
1101                 }
1102                 start += PAGE_SIZE;
1103                 pos += PAGE_SIZE;
1104                 size -= PAGE_SIZE;
1105         }
1106
1107         return 0;
1108 }
1109
1110
1111 /*
1112  * Here comes the stuff for radio on usbvision based devices
1113  *
1114  */
1115 static int usbvision_radio_open(struct file *file)
1116 {
1117         struct usb_usbvision *usbvision = video_drvdata(file);
1118         int err_code = 0;
1119
1120         PDEBUG(DBG_IO, "%s:", __func__);
1121
1122         if (usbvision->user) {
1123                 dev_err(&usbvision->rdev->dev,
1124                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1125                                 __func__);
1126                 err_code = -EBUSY;
1127         } else {
1128                 if (power_on_at_open) {
1129                         usbvision_reset_power_off_timer(usbvision);
1130                         if (usbvision->power == 0) {
1131                                 usbvision_power_on(usbvision);
1132                                 usbvision_i2c_register(usbvision);
1133                         }
1134                 }
1135
1136                 /* Alternate interface 1 is is the biggest frame size */
1137                 err_code = usbvision_set_alternate(usbvision);
1138                 if (err_code < 0) {
1139                         usbvision->last_error = err_code;
1140                         err_code = -EBUSY;
1141                         goto out;
1142                 }
1143
1144                 /* If so far no errors then we shall start the radio */
1145                 usbvision->radio = 1;
1146                 call_all(usbvision, tuner, s_radio);
1147                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1148                 usbvision->user++;
1149         }
1150
1151         if (err_code) {
1152                 if (power_on_at_open) {
1153                         usbvision_i2c_unregister(usbvision);
1154                         usbvision_power_off(usbvision);
1155                         usbvision->initialized = 0;
1156                 }
1157         }
1158 out:
1159         return err_code;
1160 }
1161
1162
1163 static int usbvision_radio_close(struct file *file)
1164 {
1165         struct usb_usbvision *usbvision = video_drvdata(file);
1166         int err_code = 0;
1167
1168         PDEBUG(DBG_IO, "");
1169
1170         /* Set packet size to 0 */
1171         usbvision->iface_alt = 0;
1172         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1173                                     usbvision->iface_alt);
1174
1175         usbvision_audio_off(usbvision);
1176         usbvision->radio = 0;
1177         usbvision->user--;
1178
1179         if (power_on_at_open) {
1180                 usbvision_set_power_off_timer(usbvision);
1181                 usbvision->initialized = 0;
1182         }
1183
1184         if (usbvision->remove_pending) {
1185                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1186                 usbvision_release(usbvision);
1187         }
1188
1189         PDEBUG(DBG_IO, "success");
1190         return err_code;
1191 }
1192
1193 /* Video registration stuff */
1194
1195 /* Video template */
1196 static const struct v4l2_file_operations usbvision_fops = {
1197         .owner             = THIS_MODULE,
1198         .open           = usbvision_v4l2_open,
1199         .release        = usbvision_v4l2_close,
1200         .read           = usbvision_v4l2_read,
1201         .mmap           = usbvision_v4l2_mmap,
1202         .unlocked_ioctl = video_ioctl2,
1203 /*      .poll           = video_poll, */
1204 };
1205
1206 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1207         .vidioc_querycap      = vidioc_querycap,
1208         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1209         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1210         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1211         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1212         .vidioc_reqbufs       = vidioc_reqbufs,
1213         .vidioc_querybuf      = vidioc_querybuf,
1214         .vidioc_qbuf          = vidioc_qbuf,
1215         .vidioc_dqbuf         = vidioc_dqbuf,
1216         .vidioc_s_std         = vidioc_s_std,
1217         .vidioc_enum_input    = vidioc_enum_input,
1218         .vidioc_g_input       = vidioc_g_input,
1219         .vidioc_s_input       = vidioc_s_input,
1220         .vidioc_queryctrl     = vidioc_queryctrl,
1221         .vidioc_g_audio       = vidioc_g_audio,
1222         .vidioc_s_audio       = vidioc_s_audio,
1223         .vidioc_g_ctrl        = vidioc_g_ctrl,
1224         .vidioc_s_ctrl        = vidioc_s_ctrl,
1225         .vidioc_streamon      = vidioc_streamon,
1226         .vidioc_streamoff     = vidioc_streamoff,
1227         .vidioc_g_tuner       = vidioc_g_tuner,
1228         .vidioc_s_tuner       = vidioc_s_tuner,
1229         .vidioc_g_frequency   = vidioc_g_frequency,
1230         .vidioc_s_frequency   = vidioc_s_frequency,
1231 #ifdef CONFIG_VIDEO_ADV_DEBUG
1232         .vidioc_g_register    = vidioc_g_register,
1233         .vidioc_s_register    = vidioc_s_register,
1234 #endif
1235 };
1236
1237 static struct video_device usbvision_video_template = {
1238         .fops           = &usbvision_fops,
1239         .ioctl_ops      = &usbvision_ioctl_ops,
1240         .name           = "usbvision-video",
1241         .release        = video_device_release,
1242         .tvnorms        = USBVISION_NORMS,
1243         .current_norm   = V4L2_STD_PAL
1244 };
1245
1246
1247 /* Radio template */
1248 static const struct v4l2_file_operations usbvision_radio_fops = {
1249         .owner             = THIS_MODULE,
1250         .open           = usbvision_radio_open,
1251         .release        = usbvision_radio_close,
1252         .unlocked_ioctl = video_ioctl2,
1253 };
1254
1255 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1256         .vidioc_querycap      = vidioc_querycap,
1257         .vidioc_enum_input    = vidioc_enum_input,
1258         .vidioc_g_input       = vidioc_g_input,
1259         .vidioc_s_input       = vidioc_s_input,
1260         .vidioc_queryctrl     = vidioc_queryctrl,
1261         .vidioc_g_audio       = vidioc_g_audio,
1262         .vidioc_s_audio       = vidioc_s_audio,
1263         .vidioc_g_ctrl        = vidioc_g_ctrl,
1264         .vidioc_s_ctrl        = vidioc_s_ctrl,
1265         .vidioc_g_tuner       = vidioc_g_tuner,
1266         .vidioc_s_tuner       = vidioc_s_tuner,
1267         .vidioc_g_frequency   = vidioc_g_frequency,
1268         .vidioc_s_frequency   = vidioc_s_frequency,
1269 };
1270
1271 static struct video_device usbvision_radio_template = {
1272         .fops           = &usbvision_radio_fops,
1273         .name           = "usbvision-radio",
1274         .release        = video_device_release,
1275         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1276
1277         .tvnorms              = USBVISION_NORMS,
1278         .current_norm         = V4L2_STD_PAL
1279 };
1280
1281
1282 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1283                                         struct video_device *vdev_template,
1284                                         char *name)
1285 {
1286         struct usb_device *usb_dev = usbvision->dev;
1287         struct video_device *vdev;
1288
1289         if (usb_dev == NULL) {
1290                 dev_err(&usbvision->dev->dev,
1291                         "%s: usbvision->dev is not set\n", __func__);
1292                 return NULL;
1293         }
1294
1295         vdev = video_device_alloc();
1296         if (NULL == vdev)
1297                 return NULL;
1298         *vdev = *vdev_template;
1299         vdev->lock = &usbvision->v4l2_lock;
1300         vdev->v4l2_dev = &usbvision->v4l2_dev;
1301         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1302         video_set_drvdata(vdev, usbvision);
1303         return vdev;
1304 }
1305
1306 /* unregister video4linux devices */
1307 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1308 {
1309         /* Radio Device: */
1310         if (usbvision->rdev) {
1311                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1312                        video_device_node_name(usbvision->rdev));
1313                 if (video_is_registered(usbvision->rdev))
1314                         video_unregister_device(usbvision->rdev);
1315                 else
1316                         video_device_release(usbvision->rdev);
1317                 usbvision->rdev = NULL;
1318         }
1319
1320         /* Video Device: */
1321         if (usbvision->vdev) {
1322                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1323                        video_device_node_name(usbvision->vdev));
1324                 if (video_is_registered(usbvision->vdev))
1325                         video_unregister_device(usbvision->vdev);
1326                 else
1327                         video_device_release(usbvision->vdev);
1328                 usbvision->vdev = NULL;
1329         }
1330 }
1331
1332 /* register video4linux devices */
1333 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1334 {
1335         /* Video Device: */
1336         usbvision->vdev = usbvision_vdev_init(usbvision,
1337                                               &usbvision_video_template,
1338                                               "USBVision Video");
1339         if (usbvision->vdev == NULL)
1340                 goto err_exit;
1341         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1342                 goto err_exit;
1343         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1344                usbvision->nr, video_device_node_name(usbvision->vdev));
1345
1346         /* Radio Device: */
1347         if (usbvision_device_data[usbvision->dev_model].radio) {
1348                 /* usbvision has radio */
1349                 usbvision->rdev = usbvision_vdev_init(usbvision,
1350                                                       &usbvision_radio_template,
1351                                                       "USBVision Radio");
1352                 if (usbvision->rdev == NULL)
1353                         goto err_exit;
1354                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1355                         goto err_exit;
1356                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1357                        usbvision->nr, video_device_node_name(usbvision->rdev));
1358         }
1359         /* all done */
1360         return 0;
1361
1362  err_exit:
1363         dev_err(&usbvision->dev->dev,
1364                 "USBVision[%d]: video_register_device() failed\n",
1365                         usbvision->nr);
1366         usbvision_unregister_video(usbvision);
1367         return -1;
1368 }
1369
1370 /*
1371  * usbvision_alloc()
1372  *
1373  * This code allocates the struct usb_usbvision.
1374  * It is filled with default values.
1375  *
1376  * Returns NULL on error, a pointer to usb_usbvision else.
1377  *
1378  */
1379 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1380                                              struct usb_interface *intf)
1381 {
1382         struct usb_usbvision *usbvision;
1383
1384         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1385         if (usbvision == NULL)
1386                 return NULL;
1387
1388         usbvision->dev = dev;
1389         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1390                 goto err_free;
1391
1392         mutex_init(&usbvision->v4l2_lock);
1393
1394         /* prepare control urb for control messages during interrupts */
1395         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1396         if (usbvision->ctrl_urb == NULL)
1397                 goto err_unreg;
1398         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1399
1400         usbvision_init_power_off_timer(usbvision);
1401
1402         return usbvision;
1403
1404 err_unreg:
1405         v4l2_device_unregister(&usbvision->v4l2_dev);
1406 err_free:
1407         kfree(usbvision);
1408         return NULL;
1409 }
1410
1411 /*
1412  * usbvision_release()
1413  *
1414  * This code does final release of struct usb_usbvision. This happens
1415  * after the device is disconnected -and- all clients closed their files.
1416  *
1417  */
1418 static void usbvision_release(struct usb_usbvision *usbvision)
1419 {
1420         PDEBUG(DBG_PROBE, "");
1421
1422         usbvision_reset_power_off_timer(usbvision);
1423
1424         usbvision->initialized = 0;
1425
1426         usbvision_remove_sysfs(usbvision->vdev);
1427         usbvision_unregister_video(usbvision);
1428         kfree(usbvision->alt_max_pkt_size);
1429
1430         usb_free_urb(usbvision->ctrl_urb);
1431
1432         v4l2_device_unregister(&usbvision->v4l2_dev);
1433         kfree(usbvision);
1434
1435         PDEBUG(DBG_PROBE, "success");
1436 }
1437
1438
1439 /*********************** usb interface **********************************/
1440
1441 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1442 {
1443         int model;
1444
1445         if (usbvision == NULL)
1446                 return;
1447
1448         model = usbvision->dev_model;
1449         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1450
1451         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1452                 usbvision->vin_reg2_preset =
1453                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1454         } else {
1455                 usbvision->vin_reg2_preset = 0;
1456         }
1457
1458         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1459
1460         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1461         usbvision->ctl_input = 0;
1462
1463         /* This should be here to make i2c clients to be able to register */
1464         /* first switch off audio */
1465         if (usbvision_device_data[model].audio_channels > 0)
1466                 usbvision_audio_off(usbvision);
1467         if (!power_on_at_open) {
1468                 /* and then power up the noisy tuner */
1469                 usbvision_power_on(usbvision);
1470                 usbvision_i2c_register(usbvision);
1471         }
1472 }
1473
1474 /*
1475  * usbvision_probe()
1476  *
1477  * This procedure queries device descriptor and accepts the interface
1478  * if it looks like USBVISION video device
1479  *
1480  */
1481 static int __devinit usbvision_probe(struct usb_interface *intf,
1482                                      const struct usb_device_id *devid)
1483 {
1484         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1485         struct usb_interface *uif;
1486         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1487         const struct usb_host_interface *interface;
1488         struct usb_usbvision *usbvision = NULL;
1489         const struct usb_endpoint_descriptor *endpoint;
1490         int model, i, ret;
1491
1492         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1493                                 dev->descriptor.idVendor,
1494                                 dev->descriptor.idProduct, ifnum);
1495
1496         model = devid->driver_info;
1497         if (model < 0 || model >= usbvision_device_data_size) {
1498                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1499                 ret = -ENODEV;
1500                 goto err_usb;
1501         }
1502         printk(KERN_INFO "%s: %s found\n", __func__,
1503                                 usbvision_device_data[model].model_string);
1504
1505         if (usbvision_device_data[model].interface >= 0)
1506                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1507         else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1508                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1509         else {
1510                 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1511                     ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1512                 ret = -ENODEV;
1513                 goto err_usb;
1514         }
1515
1516         if (interface->desc.bNumEndpoints < 2) {
1517                 dev_err(&intf->dev, "interface %d has %d endpoints, but must"
1518                     " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
1519                 ret = -ENODEV;
1520                 goto err_usb;
1521         }
1522         endpoint = &interface->endpoint[1].desc;
1523
1524         if (!usb_endpoint_xfer_isoc(endpoint)) {
1525                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1526                     __func__, ifnum);
1527                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1528                     __func__, endpoint->bmAttributes);
1529                 ret = -ENODEV;
1530                 goto err_usb;
1531         }
1532         if (usb_endpoint_dir_out(endpoint)) {
1533                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1534                     __func__, ifnum);
1535                 ret = -ENODEV;
1536                 goto err_usb;
1537         }
1538
1539         usbvision = usbvision_alloc(dev, intf);
1540         if (usbvision == NULL) {
1541                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1542                 ret = -ENOMEM;
1543                 goto err_usb;
1544         }
1545
1546         if (dev->descriptor.bNumConfigurations > 1)
1547                 usbvision->bridge_type = BRIDGE_NT1004;
1548         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1549                 usbvision->bridge_type = BRIDGE_NT1005;
1550         else
1551                 usbvision->bridge_type = BRIDGE_NT1003;
1552         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1553
1554         /* compute alternate max packet sizes */
1555         uif = dev->actconfig->interface[0];
1556
1557         usbvision->num_alt = uif->num_altsetting;
1558         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1559         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1560         if (usbvision->alt_max_pkt_size == NULL) {
1561                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1562                 ret = -ENOMEM;
1563                 goto err_pkt;
1564         }
1565
1566         for (i = 0; i < usbvision->num_alt; i++) {
1567                 u16 tmp;
1568
1569                 if (uif->altsetting[i].desc.bNumEndpoints < 2) {
1570                         ret = -ENODEV;
1571                         goto err_pkt;
1572                 }
1573
1574                 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1575                                       wMaxPacketSize);
1576                 usbvision->alt_max_pkt_size[i] =
1577                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1578                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1579                        usbvision->alt_max_pkt_size[i]);
1580         }
1581
1582
1583         usbvision->nr = usbvision_nr++;
1584
1585         usbvision->have_tuner = usbvision_device_data[model].tuner;
1586         if (usbvision->have_tuner)
1587                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1588
1589         usbvision->dev_model = model;
1590         usbvision->remove_pending = 0;
1591         usbvision->iface = ifnum;
1592         usbvision->iface_alt = 0;
1593         usbvision->video_endp = endpoint->bEndpointAddress;
1594         usbvision->isoc_packet_size = 0;
1595         usbvision->usb_bandwidth = 0;
1596         usbvision->user = 0;
1597         usbvision->streaming = stream_off;
1598         usbvision_configure_video(usbvision);
1599         usbvision_register_video(usbvision);
1600
1601         usbvision_create_sysfs(usbvision->vdev);
1602
1603         PDEBUG(DBG_PROBE, "success");
1604         return 0;
1605
1606 err_pkt:
1607         usbvision_release(usbvision);
1608 err_usb:
1609         usb_put_dev(dev);
1610         return ret;
1611 }
1612
1613
1614 /*
1615  * usbvision_disconnect()
1616  *
1617  * This procedure stops all driver activity, deallocates interface-private
1618  * structure (pointed by 'ptr') and after that driver should be removable
1619  * with no ill consequences.
1620  *
1621  */
1622 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1623 {
1624         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1625
1626         PDEBUG(DBG_PROBE, "");
1627
1628         if (usbvision == NULL) {
1629                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1630                 return;
1631         }
1632
1633         mutex_lock(&usbvision->v4l2_lock);
1634
1635         /* At this time we ask to cancel outstanding URBs */
1636         usbvision_stop_isoc(usbvision);
1637
1638         v4l2_device_disconnect(&usbvision->v4l2_dev);
1639
1640         if (usbvision->power) {
1641                 usbvision_i2c_unregister(usbvision);
1642                 usbvision_power_off(usbvision);
1643         }
1644         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1645
1646         usb_put_dev(usbvision->dev);
1647         usbvision->dev = NULL;  /* USB device is no more */
1648
1649         mutex_unlock(&usbvision->v4l2_lock);
1650
1651         if (usbvision->user) {
1652                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1653                        __func__);
1654                 wake_up_interruptible(&usbvision->wait_frame);
1655                 wake_up_interruptible(&usbvision->wait_stream);
1656         } else {
1657                 usbvision_release(usbvision);
1658         }
1659
1660         PDEBUG(DBG_PROBE, "success");
1661 }
1662
1663 static struct usb_driver usbvision_driver = {
1664         .name           = "usbvision",
1665         .id_table       = usbvision_table,
1666         .probe          = usbvision_probe,
1667         .disconnect     = __devexit_p(usbvision_disconnect),
1668 };
1669
1670 /*
1671  * usbvision_init()
1672  *
1673  * This code is run to initialize the driver.
1674  *
1675  */
1676 static int __init usbvision_init(void)
1677 {
1678         int err_code;
1679
1680         PDEBUG(DBG_PROBE, "");
1681
1682         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1683         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1684         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1685
1686         /* disable planar mode support unless compression enabled */
1687         if (isoc_mode != ISOC_MODE_COMPRESS) {
1688                 /* FIXME : not the right way to set supported flag */
1689                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1690                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1691         }
1692
1693         err_code = usb_register(&usbvision_driver);
1694
1695         if (err_code == 0) {
1696                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1697                 PDEBUG(DBG_PROBE, "success");
1698         }
1699         return err_code;
1700 }
1701
1702 static void __exit usbvision_exit(void)
1703 {
1704         PDEBUG(DBG_PROBE, "");
1705
1706         usb_deregister(&usbvision_driver);
1707         PDEBUG(DBG_PROBE, "success");
1708 }
1709
1710 module_init(usbvision_init);
1711 module_exit(usbvision_exit);
1712
1713 /*
1714  * Overrides for Emacs so that we follow Linus's tabbing style.
1715  * ---------------------------------------------------------------------------
1716  * Local variables:
1717  * c-basic-offset: 8
1718  * End:
1719  */