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 <linux/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                                   \
  74         "Joerg Heckenbach <joerg@heckenbach-aw.de>, "   \
  75         "Dwaine Garden <DwaineGarden@rogers.com>"
  76 #define DRIVER_NAME "usbvision"
  77 #define DRIVER_ALIAS "USBVision"
  78 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  79 #define DRIVER_LICENSE "GPL"
  80 #define USBVISION_DRIVER_VERSION_MAJOR 0
  81 #define USBVISION_DRIVER_VERSION_MINOR 9
  82 #define USBVISION_DRIVER_VERSION_PATCHLEVEL 10
  83 #define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\
  84 USBVISION_DRIVER_VERSION_MINOR,\
  85 USBVISION_DRIVER_VERSION_PATCHLEVEL)
  86 #define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) \
  87 "." __stringify(USBVISION_DRIVER_VERSION_MINOR) \
  88 "." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL)
  89
  90 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  91
  92
  93 #ifdef USBVISION_DEBUG
  94         #define PDEBUG(level, fmt, args...) { \
  95                 if (video_debug & (level)) \
  96                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  97                                 __func__, __LINE__ , ## args); \
  98         }
  99 #else
 100         #define PDEBUG(level, fmt, args...) do {} while (0)
 101 #endif
 102
 103 #define DBG_IO          (1 << 1)
 104 #define DBG_PROBE       (1 << 2)
 105 #define DBG_MMAP        (1 << 3)
 106
 107 /* String operations */
 108 #define rmspace(str)    while (*str == ' ') str++;
 109 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
 110
 111
 112 /* sequential number of usbvision device */
 113 static int usbvision_nr;
 114
 115 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 116         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 117         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 118         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 119         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 120         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 121         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 122         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 123         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 124 };
 125
 126 /* Function prototypes */
 127 static void usbvision_release(struct usb_usbvision *usbvision);
 128
 129 /* Default initialization of device driver parameters */
 130 /* Set the default format for ISOC endpoint */
 131 static int isoc_mode = ISOC_MODE_COMPRESS;
 132 /* Set the default Debug Mode of the device driver */
 133 static int video_debug;
 134 /* Set the default device to power on at startup */
 135 static int power_on_at_open = 1;
 136 /* Sequential Number of Video Device */
 137 static int video_nr = -1;
 138 /* Sequential Number of Radio Device */
 139 static int radio_nr = -1;
 140
 141 /* Grab parameters for the device driver */
 142
 143 /* Showing parameters under SYSFS */
 144 module_param(isoc_mode, int, 0444);
 145 module_param(video_debug, int, 0444);
 146 module_param(power_on_at_open, int, 0444);
 147 module_param(video_nr, int, 0444);
 148 module_param(radio_nr, int, 0444);
 149
 150 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 151 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 152 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
 153 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 154 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 155
 156
 157 /* Misc stuff */
 158 MODULE_AUTHOR(DRIVER_AUTHOR);
 159 MODULE_DESCRIPTION(DRIVER_DESC);
 160 MODULE_LICENSE(DRIVER_LICENSE);
 161 MODULE_VERSION(USBVISION_VERSION_STRING);
 162 MODULE_ALIAS(DRIVER_ALIAS);
 163
 164
 165 /*****************************************************************************/
 166 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 167 /* Device information is located at /sys/class/video4linux/video0            */
 168 /* Device parameters information is located at /sys/module/usbvision         */
 169 /* Device USB Information is located at                                      */
 170 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 171 /*****************************************************************************/
 172
 173 #define YES_NO(x) ((x) ? "Yes" : "No")
 174
 175 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 176 {
 177         struct video_device *vdev =
 178                 container_of(cd, struct video_device, dev);
 179         return video_get_drvdata(vdev);
 180 }
 181
 182 static ssize_t show_version(struct device *cd,
 183                             struct device_attribute *attr, char *buf)
 184 {
 185         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 186 }
 187 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 188
 189 static ssize_t show_model(struct device *cd,
 190                           struct device_attribute *attr, char *buf)
 191 {
 192         struct video_device *vdev =
 193                 container_of(cd, struct video_device, dev);
 194         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 195         return sprintf(buf, "%s\n",
 196                        usbvision_device_data[usbvision->dev_model].model_string);
 197 }
 198 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 199
 200 static ssize_t show_hue(struct device *cd,
 201                         struct device_attribute *attr, char *buf)
 202 {
 203         struct video_device *vdev =
 204                 container_of(cd, struct video_device, dev);
 205         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 206         struct v4l2_control ctrl;
 207         ctrl.id = V4L2_CID_HUE;
 208         ctrl.value = 0;
 209         if (usbvision->user)
 210                 call_all(usbvision, core, g_ctrl, &ctrl);
 211         return sprintf(buf, "%d\n", ctrl.value);
 212 }
 213 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 214
 215 static ssize_t show_contrast(struct device *cd,
 216                              struct device_attribute *attr, char *buf)
 217 {
 218         struct video_device *vdev =
 219                 container_of(cd, struct video_device, dev);
 220         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 221         struct v4l2_control ctrl;
 222         ctrl.id = V4L2_CID_CONTRAST;
 223         ctrl.value = 0;
 224         if (usbvision->user)
 225                 call_all(usbvision, core, g_ctrl, &ctrl);
 226         return sprintf(buf, "%d\n", ctrl.value);
 227 }
 228 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 229
 230 static ssize_t show_brightness(struct device *cd,
 231                                struct device_attribute *attr, char *buf)
 232 {
 233         struct video_device *vdev =
 234                 container_of(cd, struct video_device, dev);
 235         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 236         struct v4l2_control ctrl;
 237         ctrl.id = V4L2_CID_BRIGHTNESS;
 238         ctrl.value = 0;
 239         if (usbvision->user)
 240                 call_all(usbvision, core, g_ctrl, &ctrl);
 241         return sprintf(buf, "%d\n", ctrl.value);
 242 }
 243 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 244
 245 static ssize_t show_saturation(struct device *cd,
 246                                struct device_attribute *attr, char *buf)
 247 {
 248         struct video_device *vdev =
 249                 container_of(cd, struct video_device, dev);
 250         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 251         struct v4l2_control ctrl;
 252         ctrl.id = V4L2_CID_SATURATION;
 253         ctrl.value = 0;
 254         if (usbvision->user)
 255                 call_all(usbvision, core, g_ctrl, &ctrl);
 256         return sprintf(buf, "%d\n", ctrl.value);
 257 }
 258 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 259
 260 static ssize_t show_streaming(struct device *cd,
 261                               struct device_attribute *attr, char *buf)
 262 {
 263         struct video_device *vdev =
 264                 container_of(cd, struct video_device, dev);
 265         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 266         return sprintf(buf, "%s\n",
 267                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 268 }
 269 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 270
 271 static ssize_t show_compression(struct device *cd,
 272                                 struct device_attribute *attr, char *buf)
 273 {
 274         struct video_device *vdev =
 275                 container_of(cd, struct video_device, dev);
 276         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 277         return sprintf(buf, "%s\n",
 278                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 279 }
 280 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 281
 282 static ssize_t show_device_bridge(struct device *cd,
 283                                   struct device_attribute *attr, char *buf)
 284 {
 285         struct video_device *vdev =
 286                 container_of(cd, struct video_device, dev);
 287         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 288         return sprintf(buf, "%d\n", usbvision->bridge_type);
 289 }
 290 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 291
 292 static void usbvision_create_sysfs(struct video_device *vdev)
 293 {
 294         int res;
 295
 296         if (!vdev)
 297                 return;
 298         do {
 299                 res = device_create_file(&vdev->dev, &dev_attr_version);
 300                 if (res < 0)
 301                         break;
 302                 res = device_create_file(&vdev->dev, &dev_attr_model);
 303                 if (res < 0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 306                 if (res < 0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 309                 if (res < 0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 312                 if (res < 0)
 313                         break;
 314                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 315                 if (res < 0)
 316                         break;
 317                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 318                 if (res < 0)
 319                         break;
 320                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 321                 if (res < 0)
 322                         break;
 323                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 324                 if (res >= 0)
 325                         return;
 326         } while (0);
 327
 328         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 329 }
 330
 331 static void usbvision_remove_sysfs(struct video_device *vdev)
 332 {
 333         if (vdev) {
 334                 device_remove_file(&vdev->dev, &dev_attr_version);
 335                 device_remove_file(&vdev->dev, &dev_attr_model);
 336                 device_remove_file(&vdev->dev, &dev_attr_hue);
 337                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 338                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 339                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 340                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 341                 device_remove_file(&vdev->dev, &dev_attr_compression);
 342                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 343         }
 344 }
 345
 346 /*
 347  * usbvision_open()
 348  *
 349  * This is part of Video 4 Linux API. The driver can be opened by one
 350  * client only (checks internal counter 'usbvision->user'). The procedure
 351  * then allocates buffers needed for video processing.
 352  *
 353  */
 354 static int usbvision_v4l2_open(struct file *file)
 355 {
 356         struct usb_usbvision *usbvision = video_drvdata(file);
 357         int err_code = 0;
 358
 359         PDEBUG(DBG_IO, "open");
 360
 361         usbvision_reset_power_off_timer(usbvision);
 362
 363         if (usbvision->user)
 364                 err_code = -EBUSY;
 365         else {
 366                 /* Allocate memory for the scratch ring buffer */
 367                 err_code = usbvision_scratch_alloc(usbvision);
 368                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 369                         /* Allocate intermediate decompression buffers
 370                            only if needed */
 371                         err_code = usbvision_decompress_alloc(usbvision);
 372                 }
 373                 if (err_code) {
 374                         /* Deallocate all buffers if trouble */
 375                         usbvision_scratch_free(usbvision);
 376                         usbvision_decompress_free(usbvision);
 377                 }
 378         }
 379
 380         /* If so far no errors then we shall start the camera */
 381         if (!err_code) {
 382                 if (usbvision->power == 0) {
 383                         usbvision_power_on(usbvision);
 384                         usbvision_i2c_register(usbvision);
 385                 }
 386
 387                 /* Send init sequence only once, it's large! */
 388                 if (!usbvision->initialized) {
 389                         int setup_ok = 0;
 390                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 391                         if (setup_ok)
 392                                 usbvision->initialized = 1;
 393                         else
 394                                 err_code = -EBUSY;
 395                 }
 396
 397                 if (!err_code) {
 398                         usbvision_begin_streaming(usbvision);
 399                         err_code = usbvision_init_isoc(usbvision);
 400                         /* device must be initialized before isoc transfer */
 401                         usbvision_muxsel(usbvision, 0);
 402                         usbvision->user++;
 403                 } else {
 404                         if (power_on_at_open) {
 405                                 usbvision_i2c_unregister(usbvision);
 406                                 usbvision_power_off(usbvision);
 407                                 usbvision->initialized = 0;
 408                         }
 409                 }
 410         }
 411
 412         /* prepare queues */
 413         usbvision_empty_framequeues(usbvision);
 414
 415         PDEBUG(DBG_IO, "success");
 416         return err_code;
 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
 433         usbvision_audio_off(usbvision);
 434         usbvision_restart_isoc(usbvision);
 435         usbvision_stop_isoc(usbvision);
 436
 437         usbvision_decompress_free(usbvision);
 438         usbvision_frames_free(usbvision);
 439         usbvision_empty_framequeues(usbvision);
 440         usbvision_scratch_free(usbvision);
 441
 442         usbvision->user--;
 443
 444         if (power_on_at_open) {
 445                 /* power off in a little while
 446                    to avoid off/on every close/open short sequences */
 447                 usbvision_set_power_off_timer(usbvision);
 448                 usbvision->initialized = 0;
 449         }
 450
 451         if (usbvision->remove_pending) {
 452                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 453                 usbvision_release(usbvision);
 454         }
 455
 456         PDEBUG(DBG_IO, "success");
 457         return 0;
 458 }
 459
 460
 461 /*
 462  * usbvision_ioctl()
 463  *
 464  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 465  *
 466  */
 467 #ifdef CONFIG_VIDEO_ADV_DEBUG
 468 static int vidioc_g_register(struct file *file, void *priv,
 469                                 struct v4l2_dbg_register *reg)
 470 {
 471         struct usb_usbvision *usbvision = video_drvdata(file);
 472         int err_code;
 473
 474         if (!v4l2_chip_match_host(&reg->match))
 475                 return -EINVAL;
 476         /* NT100x has a 8-bit register space */
 477         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 478         if (err_code < 0) {
 479                 dev_err(&usbvision->vdev->dev,
 480                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 481                                 __func__, err_code);
 482                 return err_code;
 483         }
 484         reg->val = err_code;
 485         reg->size = 1;
 486         return 0;
 487 }
 488
 489 static int vidioc_s_register(struct file *file, void *priv,
 490                                 struct v4l2_dbg_register *reg)
 491 {
 492         struct usb_usbvision *usbvision = video_drvdata(file);
 493         int err_code;
 494
 495         if (!v4l2_chip_match_host(&reg->match))
 496                 return -EINVAL;
 497         /* NT100x has a 8-bit register space */
 498         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 499         if (err_code < 0) {
 500                 dev_err(&usbvision->vdev->dev,
 501                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 502                                 __func__, err_code);
 503                 return err_code;
 504         }
 505         return 0;
 506 }
 507 #endif
 508
 509 static int vidioc_querycap(struct file *file, void  *priv,
 510                                         struct v4l2_capability *vc)
 511 {
 512         struct usb_usbvision *usbvision = video_drvdata(file);
 513
 514         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 515         strlcpy(vc->card,
 516                 usbvision_device_data[usbvision->dev_model].model_string,
 517                 sizeof(vc->card));
 518         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 519         vc->version = USBVISION_DRIVER_VERSION;
 520         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 521                 V4L2_CAP_AUDIO |
 522                 V4L2_CAP_READWRITE |
 523                 V4L2_CAP_STREAMING |
 524                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 525         return 0;
 526 }
 527
 528 static int vidioc_enum_input(struct file *file, void *priv,
 529                                 struct v4l2_input *vi)
 530 {
 531         struct usb_usbvision *usbvision = video_drvdata(file);
 532         int chan;
 533
 534         if (vi->index >= usbvision->video_inputs)
 535                 return -EINVAL;
 536         if (usbvision->have_tuner)
 537                 chan = vi->index;
 538         else
 539                 chan = vi->index + 1; /* skip Television string*/
 540
 541         /* Determine the requested input characteristics
 542            specific for each usbvision card model */
 543         switch (chan) {
 544         case 0:
 545                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 546                         strcpy(vi->name, "White Video Input");
 547                 } else {
 548                         strcpy(vi->name, "Television");
 549                         vi->type = V4L2_INPUT_TYPE_TUNER;
 550                         vi->audioset = 1;
 551                         vi->tuner = chan;
 552                         vi->std = USBVISION_NORMS;
 553                 }
 554                 break;
 555         case 1:
 556                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 557                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 558                         strcpy(vi->name, "Green Video Input");
 559                 else
 560                         strcpy(vi->name, "Composite Video Input");
 561                 vi->std = V4L2_STD_PAL;
 562                 break;
 563         case 2:
 564                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 565                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 566                         strcpy(vi->name, "Yellow Video Input");
 567                 else
 568                         strcpy(vi->name, "S-Video Input");
 569                 vi->std = V4L2_STD_PAL;
 570                 break;
 571         case 3:
 572                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 573                 strcpy(vi->name, "Red Video Input");
 574                 vi->std = V4L2_STD_PAL;
 575                 break;
 576         }
 577         return 0;
 578 }
 579
 580 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 581 {
 582         struct usb_usbvision *usbvision = video_drvdata(file);
 583
 584         *input = usbvision->ctl_input;
 585         return 0;
 586 }
 587
 588 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 589 {
 590         struct usb_usbvision *usbvision = video_drvdata(file);
 591
 592         if (input >= usbvision->video_inputs)
 593                 return -EINVAL;
 594
 595         usbvision_muxsel(usbvision, input);
 596         usbvision_set_input(usbvision);
 597         usbvision_set_output(usbvision,
 598                              usbvision->curwidth,
 599                              usbvision->curheight);
 600         return 0;
 601 }
 602
 603 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
 604 {
 605         struct usb_usbvision *usbvision = video_drvdata(file);
 606
 607         usbvision->tvnorm_id = *id;
 608
 609         call_all(usbvision, core, s_std, usbvision->tvnorm_id);
 610         /* propagate the change to the decoder */
 611         usbvision_muxsel(usbvision, usbvision->ctl_input);
 612
 613         return 0;
 614 }
 615
 616 static int vidioc_g_tuner(struct file *file, void *priv,
 617                                 struct v4l2_tuner *vt)
 618 {
 619         struct usb_usbvision *usbvision = video_drvdata(file);
 620
 621         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
 622                 return -EINVAL;
 623         if (usbvision->radio) {
 624                 strcpy(vt->name, "Radio");
 625                 vt->type = V4L2_TUNER_RADIO;
 626         } else {
 627                 strcpy(vt->name, "Television");
 628         }
 629         /* Let clients fill in the remainder of this struct */
 630         call_all(usbvision, tuner, g_tuner, vt);
 631
 632         return 0;
 633 }
 634
 635 static int vidioc_s_tuner(struct file *file, void *priv,
 636                                 struct v4l2_tuner *vt)
 637 {
 638         struct usb_usbvision *usbvision = video_drvdata(file);
 639
 640         /* Only no or one tuner for now */
 641         if (!usbvision->have_tuner || vt->index)
 642                 return -EINVAL;
 643         /* let clients handle this */
 644         call_all(usbvision, tuner, s_tuner, vt);
 645
 646         return 0;
 647 }
 648
 649 static int vidioc_g_frequency(struct file *file, void *priv,
 650                                 struct v4l2_frequency *freq)
 651 {
 652         struct usb_usbvision *usbvision = video_drvdata(file);
 653
 654         freq->tuner = 0; /* Only one tuner */
 655         if (usbvision->radio)
 656                 freq->type = V4L2_TUNER_RADIO;
 657         else
 658                 freq->type = V4L2_TUNER_ANALOG_TV;
 659         freq->frequency = usbvision->freq;
 660
 661         return 0;
 662 }
 663
 664 static int vidioc_s_frequency(struct file *file, void *priv,
 665                                 struct v4l2_frequency *freq)
 666 {
 667         struct usb_usbvision *usbvision = video_drvdata(file);
 668
 669         /* Only no or one tuner for now */
 670         if (!usbvision->have_tuner || freq->tuner)
 671                 return -EINVAL;
 672
 673         usbvision->freq = freq->frequency;
 674         call_all(usbvision, tuner, s_frequency, freq);
 675
 676         return 0;
 677 }
 678
 679 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 680 {
 681         struct usb_usbvision *usbvision = video_drvdata(file);
 682
 683         if (usbvision->radio)
 684                 strcpy(a->name, "Radio");
 685         else
 686                 strcpy(a->name, "TV");
 687
 688         return 0;
 689 }
 690
 691 static int vidioc_s_audio(struct file *file, void *fh,
 692                           struct v4l2_audio *a)
 693 {
 694         if (a->index)
 695                 return -EINVAL;
 696         return 0;
 697 }
 698
 699 static int vidioc_queryctrl(struct file *file, void *priv,
 700                             struct v4l2_queryctrl *ctrl)
 701 {
 702         struct usb_usbvision *usbvision = video_drvdata(file);
 703
 704         call_all(usbvision, core, queryctrl, ctrl);
 705
 706         if (!ctrl->type)
 707                 return -EINVAL;
 708
 709         return 0;
 710 }
 711
 712 static int vidioc_g_ctrl(struct file *file, void *priv,
 713                                 struct v4l2_control *ctrl)
 714 {
 715         struct usb_usbvision *usbvision = video_drvdata(file);
 716
 717         call_all(usbvision, core, g_ctrl, ctrl);
 718         return 0;
 719 }
 720
 721 static int vidioc_s_ctrl(struct file *file, void *priv,
 722                                 struct v4l2_control *ctrl)
 723 {
 724         struct usb_usbvision *usbvision = video_drvdata(file);
 725
 726         call_all(usbvision, core, s_ctrl, ctrl);
 727         return 0;
 728 }
 729
 730 static int vidioc_reqbufs(struct file *file,
 731                            void *priv, struct v4l2_requestbuffers *vr)
 732 {
 733         struct usb_usbvision *usbvision = video_drvdata(file);
 734         int ret;
 735
 736         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 737
 738         /* Check input validity:
 739            the user must do a VIDEO CAPTURE and MMAP method. */
 740         if (vr->memory != V4L2_MEMORY_MMAP)
 741                 return -EINVAL;
 742
 743         if (usbvision->streaming == stream_on) {
 744                 ret = usbvision_stream_interrupt(usbvision);
 745                 if (ret)
 746                         return ret;
 747         }
 748
 749         usbvision_frames_free(usbvision);
 750         usbvision_empty_framequeues(usbvision);
 751         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 752
 753         usbvision->cur_frame = NULL;
 754
 755         return 0;
 756 }
 757
 758 static int vidioc_querybuf(struct file *file,
 759                             void *priv, struct v4l2_buffer *vb)
 760 {
 761         struct usb_usbvision *usbvision = video_drvdata(file);
 762         struct usbvision_frame *frame;
 763
 764         /* FIXME : must control
 765            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 766         if (vb->index >= usbvision->num_frames)
 767                 return -EINVAL;
 768         /* Updating the corresponding frame state */
 769         vb->flags = 0;
 770         frame = &usbvision->frame[vb->index];
 771         if (frame->grabstate >= frame_state_ready)
 772                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 773         if (frame->grabstate >= frame_state_done)
 774                 vb->flags |= V4L2_BUF_FLAG_DONE;
 775         if (frame->grabstate == frame_state_unused)
 776                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 777         vb->memory = V4L2_MEMORY_MMAP;
 778
 779         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 780
 781         vb->memory = V4L2_MEMORY_MMAP;
 782         vb->field = V4L2_FIELD_NONE;
 783         vb->length = usbvision->curwidth *
 784                 usbvision->curheight *
 785                 usbvision->palette.bytes_per_pixel;
 786         vb->timestamp = usbvision->frame[vb->index].timestamp;
 787         vb->sequence = usbvision->frame[vb->index].sequence;
 788         return 0;
 789 }
 790
 791 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 792 {
 793         struct usb_usbvision *usbvision = video_drvdata(file);
 794         struct usbvision_frame *frame;
 795         unsigned long lock_flags;
 796
 797         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 798         if (vb->index >= usbvision->num_frames)
 799                 return -EINVAL;
 800
 801         frame = &usbvision->frame[vb->index];
 802
 803         if (frame->grabstate != frame_state_unused)
 804                 return -EAGAIN;
 805
 806         /* Mark it as ready and enqueue frame */
 807         frame->grabstate = frame_state_ready;
 808         frame->scanstate = scan_state_scanning;
 809         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 810
 811         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 812
 813         /* set v4l2_format index */
 814         frame->v4l2_format = usbvision->palette;
 815
 816         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 817         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 818         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 819
 820         return 0;
 821 }
 822
 823 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 824 {
 825         struct usb_usbvision *usbvision = video_drvdata(file);
 826         int ret;
 827         struct usbvision_frame *f;
 828         unsigned long lock_flags;
 829
 830         if (list_empty(&(usbvision->outqueue))) {
 831                 if (usbvision->streaming == stream_idle)
 832                         return -EINVAL;
 833                 ret = wait_event_interruptible
 834                         (usbvision->wait_frame,
 835                          !list_empty(&(usbvision->outqueue)));
 836                 if (ret)
 837                         return ret;
 838         }
 839
 840         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 841         f = list_entry(usbvision->outqueue.next,
 842                        struct usbvision_frame, frame);
 843         list_del(usbvision->outqueue.next);
 844         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 845
 846         f->grabstate = frame_state_unused;
 847
 848         vb->memory = V4L2_MEMORY_MMAP;
 849         vb->flags = V4L2_BUF_FLAG_MAPPED |
 850                 V4L2_BUF_FLAG_QUEUED |
 851                 V4L2_BUF_FLAG_DONE;
 852         vb->index = f->index;
 853         vb->sequence = f->sequence;
 854         vb->timestamp = f->timestamp;
 855         vb->field = V4L2_FIELD_NONE;
 856         vb->bytesused = f->scanlength;
 857
 858         return 0;
 859 }
 860
 861 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 862 {
 863         struct usb_usbvision *usbvision = video_drvdata(file);
 864
 865         usbvision->streaming = stream_on;
 866         call_all(usbvision, video, s_stream, 1);
 867
 868         return 0;
 869 }
 870
 871 static int vidioc_streamoff(struct file *file,
 872                             void *priv, enum v4l2_buf_type type)
 873 {
 874         struct usb_usbvision *usbvision = video_drvdata(file);
 875
 876         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 877                 return -EINVAL;
 878
 879         if (usbvision->streaming == stream_on) {
 880                 usbvision_stream_interrupt(usbvision);
 881                 /* Stop all video streamings */
 882                 call_all(usbvision, video, s_stream, 0);
 883         }
 884         usbvision_empty_framequeues(usbvision);
 885
 886         return 0;
 887 }
 888
 889 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 890                                         struct v4l2_fmtdesc *vfd)
 891 {
 892         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 893                 return -EINVAL;
 894         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 895         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 896         return 0;
 897 }
 898
 899 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 900                                         struct v4l2_format *vf)
 901 {
 902         struct usb_usbvision *usbvision = video_drvdata(file);
 903         vf->fmt.pix.width = usbvision->curwidth;
 904         vf->fmt.pix.height = usbvision->curheight;
 905         vf->fmt.pix.pixelformat = usbvision->palette.format;
 906         vf->fmt.pix.bytesperline =
 907                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 908         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 909         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 910         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 911
 912         return 0;
 913 }
 914
 915 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 916                                struct v4l2_format *vf)
 917 {
 918         struct usb_usbvision *usbvision = video_drvdata(file);
 919         int format_idx;
 920
 921         /* Find requested format in available ones */
 922         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 923                 if (vf->fmt.pix.pixelformat ==
 924                    usbvision_v4l2_format[format_idx].format) {
 925                         usbvision->palette = usbvision_v4l2_format[format_idx];
 926                         break;
 927                 }
 928         }
 929         /* robustness */
 930         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 931                 return -EINVAL;
 932         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 933         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 934
 935         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 936                 usbvision->palette.bytes_per_pixel;
 937         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 938
 939         return 0;
 940 }
 941
 942 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 943                                struct v4l2_format *vf)
 944 {
 945         struct usb_usbvision *usbvision = video_drvdata(file);
 946         int ret;
 947
 948         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 949         if (ret)
 950                 return ret;
 951
 952         /* stop io in case it is already in progress */
 953         if (usbvision->streaming == stream_on) {
 954                 ret = usbvision_stream_interrupt(usbvision);
 955                 if (ret)
 956                         return ret;
 957         }
 958         usbvision_frames_free(usbvision);
 959         usbvision_empty_framequeues(usbvision);
 960
 961         usbvision->cur_frame = NULL;
 962
 963         /* by now we are committed to the new data... */
 964         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 965
 966         return 0;
 967 }
 968
 969 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
 970                       size_t count, loff_t *ppos)
 971 {
 972         struct usb_usbvision *usbvision = video_drvdata(file);
 973         int noblock = file->f_flags & O_NONBLOCK;
 974         unsigned long lock_flags;
 975         int ret, i;
 976         struct usbvision_frame *frame;
 977
 978         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 979                (unsigned long)count, noblock);
 980
 981         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 982                 return -EFAULT;
 983
 984         /* This entry point is compatible with the mmap routines
 985            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 986            to get frames or call read on the device. */
 987         if (!usbvision->num_frames) {
 988                 /* First, allocate some frames to work with
 989                    if this has not been done with VIDIOC_REQBUF */
 990                 usbvision_frames_free(usbvision);
 991                 usbvision_empty_framequeues(usbvision);
 992                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 993         }
 994
 995         if (usbvision->streaming != stream_on) {
 996                 /* no stream is running, make it running ! */
 997                 usbvision->streaming = stream_on;
 998                 call_all(usbvision, video, s_stream, 1);
 999         }
1000
1001         /* Then, enqueue as many frames as possible
1002            (like a user of VIDIOC_QBUF would do) */
1003         for (i = 0; i < usbvision->num_frames; i++) {
1004                 frame = &usbvision->frame[i];
1005                 if (frame->grabstate == frame_state_unused) {
1006                         /* Mark it as ready and enqueue frame */
1007                         frame->grabstate = frame_state_ready;
1008                         frame->scanstate = scan_state_scanning;
1009                         /* Accumulated in usbvision_parse_data() */
1010                         frame->scanlength = 0;
1011
1012                         /* set v4l2_format index */
1013                         frame->v4l2_format = usbvision->palette;
1014
1015                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1016                         list_add_tail(&frame->frame, &usbvision->inqueue);
1017                         spin_unlock_irqrestore(&usbvision->queue_lock,
1018                                                lock_flags);
1019                 }
1020         }
1021
1022         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1023         if (list_empty(&(usbvision->outqueue))) {
1024                 if (noblock)
1025                         return -EAGAIN;
1026
1027                 ret = wait_event_interruptible
1028                         (usbvision->wait_frame,
1029                          !list_empty(&(usbvision->outqueue)));
1030                 if (ret)
1031                         return ret;
1032         }
1033
1034         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1035         frame = list_entry(usbvision->outqueue.next,
1036                            struct usbvision_frame, frame);
1037         list_del(usbvision->outqueue.next);
1038         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1039
1040         /* An error returns an empty frame */
1041         if (frame->grabstate == frame_state_error) {
1042                 frame->bytes_read = 0;
1043                 return 0;
1044         }
1045
1046         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1047                __func__,
1048                frame->index, frame->bytes_read, frame->scanlength);
1049
1050         /* copy bytes to user space; we allow for partials reads */
1051         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1052                 count = frame->scanlength - frame->bytes_read;
1053
1054         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1055                 return -EFAULT;
1056
1057         frame->bytes_read += count;
1058         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1059                __func__,
1060                (unsigned long)count, frame->bytes_read);
1061
1062         /* For now, forget the frame if it has not been read in one shot. */
1063 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1064                 frame->bytes_read = 0;
1065
1066                 /* Mark it as available to be used again. */
1067                 frame->grabstate = frame_state_unused;
1068 /*      } */
1069
1070         return count;
1071 }
1072
1073 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1074 {
1075         unsigned long size = vma->vm_end - vma->vm_start,
1076                 start = vma->vm_start;
1077         void *pos;
1078         u32 i;
1079         struct usb_usbvision *usbvision = video_drvdata(file);
1080
1081         PDEBUG(DBG_MMAP, "mmap");
1082
1083         if (!USBVISION_IS_OPERATIONAL(usbvision))
1084                 return -EFAULT;
1085
1086         if (!(vma->vm_flags & VM_WRITE) ||
1087             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1088                 return -EINVAL;
1089         }
1090
1091         for (i = 0; i < usbvision->num_frames; i++) {
1092                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1093                     vma->vm_pgoff)
1094                         break;
1095         }
1096         if (i == usbvision->num_frames) {
1097                 PDEBUG(DBG_MMAP,
1098                        "mmap: user supplied mapping address is out of range");
1099                 return -EINVAL;
1100         }
1101
1102         /* VM_IO is eventually going to replace PageReserved altogether */
1103         vma->vm_flags |= VM_IO;
1104         vma->vm_flags |= VM_RESERVED;   /* avoid to swap out this VMA */
1105
1106         pos = usbvision->frame[i].data;
1107         while (size > 0) {
1108                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1109                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1110                         return -EAGAIN;
1111                 }
1112                 start += PAGE_SIZE;
1113                 pos += PAGE_SIZE;
1114                 size -= PAGE_SIZE;
1115         }
1116
1117         return 0;
1118 }
1119
1120
1121 /*
1122  * Here comes the stuff for radio on usbvision based devices
1123  *
1124  */
1125 static int usbvision_radio_open(struct file *file)
1126 {
1127         struct usb_usbvision *usbvision = video_drvdata(file);
1128         int err_code = 0;
1129
1130         PDEBUG(DBG_IO, "%s:", __func__);
1131
1132         if (usbvision->user) {
1133                 dev_err(&usbvision->rdev->dev,
1134                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1135                                 __func__);
1136                 err_code = -EBUSY;
1137         } else {
1138                 if (power_on_at_open) {
1139                         usbvision_reset_power_off_timer(usbvision);
1140                         if (usbvision->power == 0) {
1141                                 usbvision_power_on(usbvision);
1142                                 usbvision_i2c_register(usbvision);
1143                         }
1144                 }
1145
1146                 /* Alternate interface 1 is is the biggest frame size */
1147                 err_code = usbvision_set_alternate(usbvision);
1148                 if (err_code < 0) {
1149                         usbvision->last_error = err_code;
1150                         err_code = -EBUSY;
1151                         goto out;
1152                 }
1153
1154                 /* If so far no errors then we shall start the radio */
1155                 usbvision->radio = 1;
1156                 call_all(usbvision, tuner, s_radio);
1157                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1158                 usbvision->user++;
1159         }
1160
1161         if (err_code) {
1162                 if (power_on_at_open) {
1163                         usbvision_i2c_unregister(usbvision);
1164                         usbvision_power_off(usbvision);
1165                         usbvision->initialized = 0;
1166                 }
1167         }
1168 out:
1169         return err_code;
1170 }
1171
1172
1173 static int usbvision_radio_close(struct file *file)
1174 {
1175         struct usb_usbvision *usbvision = video_drvdata(file);
1176         int err_code = 0;
1177
1178         PDEBUG(DBG_IO, "");
1179
1180         /* Set packet size to 0 */
1181         usbvision->iface_alt = 0;
1182         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1183                                     usbvision->iface_alt);
1184
1185         usbvision_audio_off(usbvision);
1186         usbvision->radio = 0;
1187         usbvision->user--;
1188
1189         if (power_on_at_open) {
1190                 usbvision_set_power_off_timer(usbvision);
1191                 usbvision->initialized = 0;
1192         }
1193
1194         if (usbvision->remove_pending) {
1195                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1196                 usbvision_release(usbvision);
1197         }
1198
1199         PDEBUG(DBG_IO, "success");
1200         return err_code;
1201 }
1202
1203 /* Video registration stuff */
1204
1205 /* Video template */
1206 static const struct v4l2_file_operations usbvision_fops = {
1207         .owner             = THIS_MODULE,
1208         .open           = usbvision_v4l2_open,
1209         .release        = usbvision_v4l2_close,
1210         .read           = usbvision_v4l2_read,
1211         .mmap           = usbvision_v4l2_mmap,
1212         .unlocked_ioctl = video_ioctl2,
1213 /*      .poll           = video_poll, */
1214 };
1215
1216 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1217         .vidioc_querycap      = vidioc_querycap,
1218         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1219         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1220         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1221         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1222         .vidioc_reqbufs       = vidioc_reqbufs,
1223         .vidioc_querybuf      = vidioc_querybuf,
1224         .vidioc_qbuf          = vidioc_qbuf,
1225         .vidioc_dqbuf         = vidioc_dqbuf,
1226         .vidioc_s_std         = vidioc_s_std,
1227         .vidioc_enum_input    = vidioc_enum_input,
1228         .vidioc_g_input       = vidioc_g_input,
1229         .vidioc_s_input       = vidioc_s_input,
1230         .vidioc_queryctrl     = vidioc_queryctrl,
1231         .vidioc_g_audio       = vidioc_g_audio,
1232         .vidioc_s_audio       = vidioc_s_audio,
1233         .vidioc_g_ctrl        = vidioc_g_ctrl,
1234         .vidioc_s_ctrl        = vidioc_s_ctrl,
1235         .vidioc_streamon      = vidioc_streamon,
1236         .vidioc_streamoff     = vidioc_streamoff,
1237         .vidioc_g_tuner       = vidioc_g_tuner,
1238         .vidioc_s_tuner       = vidioc_s_tuner,
1239         .vidioc_g_frequency   = vidioc_g_frequency,
1240         .vidioc_s_frequency   = vidioc_s_frequency,
1241 #ifdef CONFIG_VIDEO_ADV_DEBUG
1242         .vidioc_g_register    = vidioc_g_register,
1243         .vidioc_s_register    = vidioc_s_register,
1244 #endif
1245 };
1246
1247 static struct video_device usbvision_video_template = {
1248         .fops           = &usbvision_fops,
1249         .ioctl_ops      = &usbvision_ioctl_ops,
1250         .name           = "usbvision-video",
1251         .release        = video_device_release,
1252         .tvnorms        = USBVISION_NORMS,
1253         .current_norm   = V4L2_STD_PAL
1254 };
1255
1256
1257 /* Radio template */
1258 static const struct v4l2_file_operations usbvision_radio_fops = {
1259         .owner             = THIS_MODULE,
1260         .open           = usbvision_radio_open,
1261         .release        = usbvision_radio_close,
1262         .unlocked_ioctl = video_ioctl2,
1263 };
1264
1265 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1266         .vidioc_querycap      = vidioc_querycap,
1267         .vidioc_enum_input    = vidioc_enum_input,
1268         .vidioc_g_input       = vidioc_g_input,
1269         .vidioc_s_input       = vidioc_s_input,
1270         .vidioc_queryctrl     = vidioc_queryctrl,
1271         .vidioc_g_audio       = vidioc_g_audio,
1272         .vidioc_s_audio       = vidioc_s_audio,
1273         .vidioc_g_ctrl        = vidioc_g_ctrl,
1274         .vidioc_s_ctrl        = vidioc_s_ctrl,
1275         .vidioc_g_tuner       = vidioc_g_tuner,
1276         .vidioc_s_tuner       = vidioc_s_tuner,
1277         .vidioc_g_frequency   = vidioc_g_frequency,
1278         .vidioc_s_frequency   = vidioc_s_frequency,
1279 };
1280
1281 static struct video_device usbvision_radio_template = {
1282         .fops           = &usbvision_radio_fops,
1283         .name           = "usbvision-radio",
1284         .release        = video_device_release,
1285         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1286
1287         .tvnorms              = USBVISION_NORMS,
1288         .current_norm         = V4L2_STD_PAL
1289 };
1290
1291
1292 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1293                                         struct video_device *vdev_template,
1294                                         char *name)
1295 {
1296         struct usb_device *usb_dev = usbvision->dev;
1297         struct video_device *vdev;
1298
1299         if (usb_dev == NULL) {
1300                 dev_err(&usbvision->dev->dev,
1301                         "%s: usbvision->dev is not set\n", __func__);
1302                 return NULL;
1303         }
1304
1305         vdev = video_device_alloc();
1306         if (NULL == vdev)
1307                 return NULL;
1308         *vdev = *vdev_template;
1309         vdev->lock = &usbvision->v4l2_lock;
1310         vdev->v4l2_dev = &usbvision->v4l2_dev;
1311         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1312         video_set_drvdata(vdev, usbvision);
1313         return vdev;
1314 }
1315
1316 /* unregister video4linux devices */
1317 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1318 {
1319         /* Radio Device: */
1320         if (usbvision->rdev) {
1321                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1322                        video_device_node_name(usbvision->rdev));
1323                 if (video_is_registered(usbvision->rdev))
1324                         video_unregister_device(usbvision->rdev);
1325                 else
1326                         video_device_release(usbvision->rdev);
1327                 usbvision->rdev = NULL;
1328         }
1329
1330         /* Video Device: */
1331         if (usbvision->vdev) {
1332                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1333                        video_device_node_name(usbvision->vdev));
1334                 if (video_is_registered(usbvision->vdev))
1335                         video_unregister_device(usbvision->vdev);
1336                 else
1337                         video_device_release(usbvision->vdev);
1338                 usbvision->vdev = NULL;
1339         }
1340 }
1341
1342 /* register video4linux devices */
1343 static int __devinit usbvision_register_video(struct usb_usbvision *usbvision)
1344 {
1345         /* Video Device: */
1346         usbvision->vdev = usbvision_vdev_init(usbvision,
1347                                               &usbvision_video_template,
1348                                               "USBVision Video");
1349         if (usbvision->vdev == NULL)
1350                 goto err_exit;
1351         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1352                 goto err_exit;
1353         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1354                usbvision->nr, video_device_node_name(usbvision->vdev));
1355
1356         /* Radio Device: */
1357         if (usbvision_device_data[usbvision->dev_model].radio) {
1358                 /* usbvision has radio */
1359                 usbvision->rdev = usbvision_vdev_init(usbvision,
1360                                                       &usbvision_radio_template,
1361                                                       "USBVision Radio");
1362                 if (usbvision->rdev == NULL)
1363                         goto err_exit;
1364                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1365                         goto err_exit;
1366                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1367                        usbvision->nr, video_device_node_name(usbvision->rdev));
1368         }
1369         /* all done */
1370         return 0;
1371
1372  err_exit:
1373         dev_err(&usbvision->dev->dev,
1374                 "USBVision[%d]: video_register_device() failed\n",
1375                         usbvision->nr);
1376         usbvision_unregister_video(usbvision);
1377         return -1;
1378 }
1379
1380 /*
1381  * usbvision_alloc()
1382  *
1383  * This code allocates the struct usb_usbvision.
1384  * It is filled with default values.
1385  *
1386  * Returns NULL on error, a pointer to usb_usbvision else.
1387  *
1388  */
1389 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1390                                              struct usb_interface *intf)
1391 {
1392         struct usb_usbvision *usbvision;
1393
1394         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1395         if (usbvision == NULL)
1396                 return NULL;
1397
1398         usbvision->dev = dev;
1399         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1400                 goto err_free;
1401
1402         mutex_init(&usbvision->v4l2_lock);
1403
1404         /* prepare control urb for control messages during interrupts */
1405         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1406         if (usbvision->ctrl_urb == NULL)
1407                 goto err_unreg;
1408         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1409
1410         usbvision_init_power_off_timer(usbvision);
1411
1412         return usbvision;
1413
1414 err_unreg:
1415         v4l2_device_unregister(&usbvision->v4l2_dev);
1416 err_free:
1417         kfree(usbvision);
1418         return NULL;
1419 }
1420
1421 /*
1422  * usbvision_release()
1423  *
1424  * This code does final release of struct usb_usbvision. This happens
1425  * after the device is disconnected -and- all clients closed their files.
1426  *
1427  */
1428 static void usbvision_release(struct usb_usbvision *usbvision)
1429 {
1430         PDEBUG(DBG_PROBE, "");
1431
1432         usbvision_reset_power_off_timer(usbvision);
1433
1434         usbvision->initialized = 0;
1435
1436         usbvision_remove_sysfs(usbvision->vdev);
1437         usbvision_unregister_video(usbvision);
1438
1439         usb_free_urb(usbvision->ctrl_urb);
1440
1441         v4l2_device_unregister(&usbvision->v4l2_dev);
1442         kfree(usbvision);
1443
1444         PDEBUG(DBG_PROBE, "success");
1445 }
1446
1447
1448 /*********************** usb interface **********************************/
1449
1450 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1451 {
1452         int model;
1453
1454         if (usbvision == NULL)
1455                 return;
1456
1457         model = usbvision->dev_model;
1458         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1459
1460         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1461                 usbvision->vin_reg2_preset =
1462                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1463         } else {
1464                 usbvision->vin_reg2_preset = 0;
1465         }
1466
1467         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1468
1469         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1470         usbvision->ctl_input = 0;
1471
1472         /* This should be here to make i2c clients to be able to register */
1473         /* first switch off audio */
1474         if (usbvision_device_data[model].audio_channels > 0)
1475                 usbvision_audio_off(usbvision);
1476         if (!power_on_at_open) {
1477                 /* and then power up the noisy tuner */
1478                 usbvision_power_on(usbvision);
1479                 usbvision_i2c_register(usbvision);
1480         }
1481 }
1482
1483 /*
1484  * usbvision_probe()
1485  *
1486  * This procedure queries device descriptor and accepts the interface
1487  * if it looks like USBVISION video device
1488  *
1489  */
1490 static int __devinit usbvision_probe(struct usb_interface *intf,
1491                                      const struct usb_device_id *devid)
1492 {
1493         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1494         struct usb_interface *uif;
1495         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1496         const struct usb_host_interface *interface;
1497         struct usb_usbvision *usbvision = NULL;
1498         const struct usb_endpoint_descriptor *endpoint;
1499         int model, i;
1500
1501         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1502                                 dev->descriptor.idVendor,
1503                                 dev->descriptor.idProduct, ifnum);
1504
1505         model = devid->driver_info;
1506         if (model < 0 || model >= usbvision_device_data_size) {
1507                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1508                 return -ENODEV;
1509         }
1510         printk(KERN_INFO "%s: %s found\n", __func__,
1511                                 usbvision_device_data[model].model_string);
1512
1513         if (usbvision_device_data[model].interface >= 0)
1514                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1515         else
1516                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1517         endpoint = &interface->endpoint[1].desc;
1518         if (!usb_endpoint_xfer_isoc(endpoint)) {
1519                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1520                     __func__, ifnum);
1521                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1522                     __func__, endpoint->bmAttributes);
1523                 return -ENODEV;
1524         }
1525         if (usb_endpoint_dir_out(endpoint)) {
1526                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1527                     __func__, ifnum);
1528                 return -ENODEV;
1529         }
1530
1531         usbvision = usbvision_alloc(dev, intf);
1532         if (usbvision == NULL) {
1533                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1534                 return -ENOMEM;
1535         }
1536
1537         if (dev->descriptor.bNumConfigurations > 1)
1538                 usbvision->bridge_type = BRIDGE_NT1004;
1539         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1540                 usbvision->bridge_type = BRIDGE_NT1005;
1541         else
1542                 usbvision->bridge_type = BRIDGE_NT1003;
1543         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1544
1545         /* compute alternate max packet sizes */
1546         uif = dev->actconfig->interface[0];
1547
1548         usbvision->num_alt = uif->num_altsetting;
1549         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1550         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1551         if (usbvision->alt_max_pkt_size == NULL) {
1552                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1553                 return -ENOMEM;
1554         }
1555
1556         for (i = 0; i < usbvision->num_alt; i++) {
1557                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1558                                       wMaxPacketSize);
1559                 usbvision->alt_max_pkt_size[i] =
1560                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1561                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1562                        usbvision->alt_max_pkt_size[i]);
1563         }
1564
1565
1566         usbvision->nr = usbvision_nr++;
1567
1568         usbvision->have_tuner = usbvision_device_data[model].tuner;
1569         if (usbvision->have_tuner)
1570                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1571
1572         usbvision->dev_model = model;
1573         usbvision->remove_pending = 0;
1574         usbvision->iface = ifnum;
1575         usbvision->iface_alt = 0;
1576         usbvision->video_endp = endpoint->bEndpointAddress;
1577         usbvision->isoc_packet_size = 0;
1578         usbvision->usb_bandwidth = 0;
1579         usbvision->user = 0;
1580         usbvision->streaming = stream_off;
1581         usbvision_configure_video(usbvision);
1582         usbvision_register_video(usbvision);
1583
1584         usbvision_create_sysfs(usbvision->vdev);
1585
1586         PDEBUG(DBG_PROBE, "success");
1587         return 0;
1588 }
1589
1590
1591 /*
1592  * usbvision_disconnect()
1593  *
1594  * This procedure stops all driver activity, deallocates interface-private
1595  * structure (pointed by 'ptr') and after that driver should be removable
1596  * with no ill consequences.
1597  *
1598  */
1599 static void __devexit usbvision_disconnect(struct usb_interface *intf)
1600 {
1601         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1602
1603         PDEBUG(DBG_PROBE, "");
1604
1605         if (usbvision == NULL) {
1606                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1607                 return;
1608         }
1609
1610         mutex_lock(&usbvision->v4l2_lock);
1611
1612         /* At this time we ask to cancel outstanding URBs */
1613         usbvision_stop_isoc(usbvision);
1614
1615         v4l2_device_disconnect(&usbvision->v4l2_dev);
1616
1617         if (usbvision->power) {
1618                 usbvision_i2c_unregister(usbvision);
1619                 usbvision_power_off(usbvision);
1620         }
1621         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1622
1623         usb_put_dev(usbvision->dev);
1624         usbvision->dev = NULL;  /* USB device is no more */
1625
1626         mutex_unlock(&usbvision->v4l2_lock);
1627
1628         if (usbvision->user) {
1629                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1630                        __func__);
1631                 wake_up_interruptible(&usbvision->wait_frame);
1632                 wake_up_interruptible(&usbvision->wait_stream);
1633         } else {
1634                 usbvision_release(usbvision);
1635         }
1636
1637         PDEBUG(DBG_PROBE, "success");
1638 }
1639
1640 static struct usb_driver usbvision_driver = {
1641         .name           = "usbvision",
1642         .id_table       = usbvision_table,
1643         .probe          = usbvision_probe,
1644         .disconnect     = __devexit_p(usbvision_disconnect),
1645 };
1646
1647 /*
1648  * usbvision_init()
1649  *
1650  * This code is run to initialize the driver.
1651  *
1652  */
1653 static int __init usbvision_init(void)
1654 {
1655         int err_code;
1656
1657         PDEBUG(DBG_PROBE, "");
1658
1659         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1660         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1661         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1662
1663         /* disable planar mode support unless compression enabled */
1664         if (isoc_mode != ISOC_MODE_COMPRESS) {
1665                 /* FIXME : not the right way to set supported flag */
1666                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1667                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1668         }
1669
1670         err_code = usb_register(&usbvision_driver);
1671
1672         if (err_code == 0) {
1673                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1674                 PDEBUG(DBG_PROBE, "success");
1675         }
1676         return err_code;
1677 }
1678
1679 static void __exit usbvision_exit(void)
1680 {
1681         PDEBUG(DBG_PROBE, "");
1682
1683         usb_deregister(&usbvision_driver);
1684         PDEBUG(DBG_PROBE, "success");
1685 }
1686
1687 module_init(usbvision_init);
1688 module_exit(usbvision_exit);
1689
1690 /*
1691  * Overrides for Emacs so that we follow Linus's tabbing style.
1692  * ---------------------------------------------------------------------------
1693  * Local variables:
1694  * c-basic-offset: 8
1695  * End:
1696  */