kernel/drivers/media/usb/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/v4l2-event.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_VERSION_STRING "0.9.11"
  81
  82 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  83
  84
  85 #ifdef USBVISION_DEBUG
  86         #define PDEBUG(level, fmt, args...) { \
  87                 if (video_debug & (level)) \
  88                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  89                                 __func__, __LINE__ , ## args); \
  90         }
  91 #else
  92         #define PDEBUG(level, fmt, args...) do {} while (0)
  93 #endif
  94
  95 #define DBG_IO          (1 << 1)
  96 #define DBG_PROBE       (1 << 2)
  97 #define DBG_MMAP        (1 << 3)
  98
  99 /* String operations */
 100 #define rmspace(str)    while (*str == ' ') str++;
 101 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
 102
 103
 104 /* sequential number of usbvision device */
 105 static int usbvision_nr;
 106
 107 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 108         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 109         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 110         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 111         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 112         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 113         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 114         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 115         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 116 };
 117
 118 /* Function prototypes */
 119 static void usbvision_release(struct usb_usbvision *usbvision);
 120
 121 /* Default initialization of device driver parameters */
 122 /* Set the default format for ISOC endpoint */
 123 static int isoc_mode = ISOC_MODE_COMPRESS;
 124 /* Set the default Debug Mode of the device driver */
 125 static int video_debug;
 126 /* Sequential Number of Video Device */
 127 static int video_nr = -1;
 128 /* Sequential Number of Radio Device */
 129 static int radio_nr = -1;
 130
 131 /* Grab parameters for the device driver */
 132
 133 /* Showing parameters under SYSFS */
 134 module_param(isoc_mode, int, 0444);
 135 module_param(video_debug, int, 0444);
 136 module_param(video_nr, int, 0444);
 137 module_param(radio_nr, int, 0444);
 138
 139 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 140 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 141 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 142 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 143
 144
 145 /* Misc stuff */
 146 MODULE_AUTHOR(DRIVER_AUTHOR);
 147 MODULE_DESCRIPTION(DRIVER_DESC);
 148 MODULE_LICENSE(DRIVER_LICENSE);
 149 MODULE_VERSION(USBVISION_VERSION_STRING);
 150 MODULE_ALIAS(DRIVER_ALIAS);
 151
 152
 153 /*****************************************************************************/
 154 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 155 /* Device information is located at /sys/class/video4linux/video0            */
 156 /* Device parameters information is located at /sys/module/usbvision         */
 157 /* Device USB Information is located at                                      */
 158 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 159 /*****************************************************************************/
 160
 161 #define YES_NO(x) ((x) ? "Yes" : "No")
 162
 163 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 164 {
 165         struct video_device *vdev =
 166                 container_of(cd, struct video_device, dev);
 167         return video_get_drvdata(vdev);
 168 }
 169
 170 static ssize_t show_version(struct device *cd,
 171                             struct device_attribute *attr, char *buf)
 172 {
 173         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 174 }
 175 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 176
 177 static ssize_t show_model(struct device *cd,
 178                           struct device_attribute *attr, char *buf)
 179 {
 180         struct video_device *vdev =
 181                 container_of(cd, struct video_device, dev);
 182         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 183         return sprintf(buf, "%s\n",
 184                        usbvision_device_data[usbvision->dev_model].model_string);
 185 }
 186 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 187
 188 static ssize_t show_hue(struct device *cd,
 189                         struct device_attribute *attr, char *buf)
 190 {
 191         struct video_device *vdev =
 192                 container_of(cd, struct video_device, dev);
 193         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 194         struct v4l2_control ctrl;
 195         ctrl.id = V4L2_CID_HUE;
 196         ctrl.value = 0;
 197         if (usbvision->user)
 198                 call_all(usbvision, core, g_ctrl, &ctrl);
 199         return sprintf(buf, "%d\n", ctrl.value);
 200 }
 201 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 202
 203 static ssize_t show_contrast(struct device *cd,
 204                              struct device_attribute *attr, char *buf)
 205 {
 206         struct video_device *vdev =
 207                 container_of(cd, struct video_device, dev);
 208         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 209         struct v4l2_control ctrl;
 210         ctrl.id = V4L2_CID_CONTRAST;
 211         ctrl.value = 0;
 212         if (usbvision->user)
 213                 call_all(usbvision, core, g_ctrl, &ctrl);
 214         return sprintf(buf, "%d\n", ctrl.value);
 215 }
 216 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 217
 218 static ssize_t show_brightness(struct device *cd,
 219                                struct device_attribute *attr, char *buf)
 220 {
 221         struct video_device *vdev =
 222                 container_of(cd, struct video_device, dev);
 223         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 224         struct v4l2_control ctrl;
 225         ctrl.id = V4L2_CID_BRIGHTNESS;
 226         ctrl.value = 0;
 227         if (usbvision->user)
 228                 call_all(usbvision, core, g_ctrl, &ctrl);
 229         return sprintf(buf, "%d\n", ctrl.value);
 230 }
 231 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 232
 233 static ssize_t show_saturation(struct device *cd,
 234                                struct device_attribute *attr, char *buf)
 235 {
 236         struct video_device *vdev =
 237                 container_of(cd, struct video_device, dev);
 238         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 239         struct v4l2_control ctrl;
 240         ctrl.id = V4L2_CID_SATURATION;
 241         ctrl.value = 0;
 242         if (usbvision->user)
 243                 call_all(usbvision, core, g_ctrl, &ctrl);
 244         return sprintf(buf, "%d\n", ctrl.value);
 245 }
 246 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 247
 248 static ssize_t show_streaming(struct device *cd,
 249                               struct device_attribute *attr, char *buf)
 250 {
 251         struct video_device *vdev =
 252                 container_of(cd, struct video_device, dev);
 253         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 254         return sprintf(buf, "%s\n",
 255                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 256 }
 257 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 258
 259 static ssize_t show_compression(struct device *cd,
 260                                 struct device_attribute *attr, char *buf)
 261 {
 262         struct video_device *vdev =
 263                 container_of(cd, struct video_device, dev);
 264         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 265         return sprintf(buf, "%s\n",
 266                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 267 }
 268 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 269
 270 static ssize_t show_device_bridge(struct device *cd,
 271                                   struct device_attribute *attr, char *buf)
 272 {
 273         struct video_device *vdev =
 274                 container_of(cd, struct video_device, dev);
 275         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 276         return sprintf(buf, "%d\n", usbvision->bridge_type);
 277 }
 278 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 279
 280 static void usbvision_create_sysfs(struct video_device *vdev)
 281 {
 282         int res;
 283
 284         if (!vdev)
 285                 return;
 286         do {
 287                 res = device_create_file(&vdev->dev, &dev_attr_version);
 288                 if (res < 0)
 289                         break;
 290                 res = device_create_file(&vdev->dev, &dev_attr_model);
 291                 if (res < 0)
 292                         break;
 293                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 294                 if (res < 0)
 295                         break;
 296                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 297                 if (res < 0)
 298                         break;
 299                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 300                 if (res < 0)
 301                         break;
 302                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 303                 if (res < 0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 306                 if (res < 0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 309                 if (res < 0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 312                 if (res >= 0)
 313                         return;
 314         } while (0);
 315
 316         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 317 }
 318
 319 static void usbvision_remove_sysfs(struct video_device *vdev)
 320 {
 321         if (vdev) {
 322                 device_remove_file(&vdev->dev, &dev_attr_version);
 323                 device_remove_file(&vdev->dev, &dev_attr_model);
 324                 device_remove_file(&vdev->dev, &dev_attr_hue);
 325                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 326                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 327                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 328                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 329                 device_remove_file(&vdev->dev, &dev_attr_compression);
 330                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 331         }
 332 }
 333
 334 /*
 335  * usbvision_open()
 336  *
 337  * This is part of Video 4 Linux API. The driver can be opened by one
 338  * client only (checks internal counter 'usbvision->user'). The procedure
 339  * then allocates buffers needed for video processing.
 340  *
 341  */
 342 static int usbvision_v4l2_open(struct file *file)
 343 {
 344         struct usb_usbvision *usbvision = video_drvdata(file);
 345         int err_code = 0;
 346
 347         PDEBUG(DBG_IO, "open");
 348
 349         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
 350                 return -ERESTARTSYS;
 351
 352         if (usbvision->user) {
 353                 err_code = -EBUSY;
 354         } else {
 355                 err_code = v4l2_fh_open(file);
 356                 if (err_code)
 357                         goto unlock;
 358
 359                 /* Allocate memory for the scratch ring buffer */
 360                 err_code = usbvision_scratch_alloc(usbvision);
 361                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 362                         /* Allocate intermediate decompression buffers
 363                            only if needed */
 364                         err_code = usbvision_decompress_alloc(usbvision);
 365                 }
 366                 if (err_code) {
 367                         /* Deallocate all buffers if trouble */
 368                         usbvision_scratch_free(usbvision);
 369                         usbvision_decompress_free(usbvision);
 370                 }
 371         }
 372
 373         /* If so far no errors then we shall start the camera */
 374         if (!err_code) {
 375                 /* Send init sequence only once, it's large! */
 376                 if (!usbvision->initialized) {
 377                         int setup_ok = 0;
 378                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 379                         if (setup_ok)
 380                                 usbvision->initialized = 1;
 381                         else
 382                                 err_code = -EBUSY;
 383                 }
 384
 385                 if (!err_code) {
 386                         usbvision_begin_streaming(usbvision);
 387                         err_code = usbvision_init_isoc(usbvision);
 388                         /* device must be initialized before isoc transfer */
 389                         usbvision_muxsel(usbvision, 0);
 390
 391                         /* prepare queues */
 392                         usbvision_empty_framequeues(usbvision);
 393                         usbvision->user++;
 394                 }
 395         }
 396
 397 unlock:
 398         mutex_unlock(&usbvision->v4l2_lock);
 399
 400         PDEBUG(DBG_IO, "success");
 401         return err_code;
 402 }
 403
 404 /*
 405  * usbvision_v4l2_close()
 406  *
 407  * This is part of Video 4 Linux API. The procedure
 408  * stops streaming and deallocates all buffers that were earlier
 409  * allocated in usbvision_v4l2_open().
 410  *
 411  */
 412 static int usbvision_v4l2_close(struct file *file)
 413 {
 414         struct usb_usbvision *usbvision = video_drvdata(file);
 415
 416         PDEBUG(DBG_IO, "close");
 417
 418         mutex_lock(&usbvision->v4l2_lock);
 419         usbvision_audio_off(usbvision);
 420         usbvision_restart_isoc(usbvision);
 421         usbvision_stop_isoc(usbvision);
 422
 423         usbvision_decompress_free(usbvision);
 424         usbvision_frames_free(usbvision);
 425         usbvision_empty_framequeues(usbvision);
 426         usbvision_scratch_free(usbvision);
 427
 428         usbvision->user--;
 429         mutex_unlock(&usbvision->v4l2_lock);
 430
 431         if (usbvision->remove_pending) {
 432                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 433                 usbvision_release(usbvision);
 434                 return 0;
 435         }
 436
 437         PDEBUG(DBG_IO, "success");
 438         return v4l2_fh_release(file);
 439 }
 440
 441
 442 /*
 443  * usbvision_ioctl()
 444  *
 445  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 446  *
 447  */
 448 #ifdef CONFIG_VIDEO_ADV_DEBUG
 449 static int vidioc_g_register(struct file *file, void *priv,
 450                                 struct v4l2_dbg_register *reg)
 451 {
 452         struct usb_usbvision *usbvision = video_drvdata(file);
 453         int err_code;
 454
 455         /* NT100x has a 8-bit register space */
 456         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 457         if (err_code < 0) {
 458                 dev_err(&usbvision->vdev.dev,
 459                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 460                                 __func__, err_code);
 461                 return err_code;
 462         }
 463         reg->val = err_code;
 464         reg->size = 1;
 465         return 0;
 466 }
 467
 468 static int vidioc_s_register(struct file *file, void *priv,
 469                                 const struct v4l2_dbg_register *reg)
 470 {
 471         struct usb_usbvision *usbvision = video_drvdata(file);
 472         int err_code;
 473
 474         /* NT100x has a 8-bit register space */
 475         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 476         if (err_code < 0) {
 477                 dev_err(&usbvision->vdev.dev,
 478                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 479                                 __func__, err_code);
 480                 return err_code;
 481         }
 482         return 0;
 483 }
 484 #endif
 485
 486 static int vidioc_querycap(struct file *file, void  *priv,
 487                                         struct v4l2_capability *vc)
 488 {
 489         struct usb_usbvision *usbvision = video_drvdata(file);
 490         struct video_device *vdev = video_devdata(file);
 491
 492         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 493         strlcpy(vc->card,
 494                 usbvision_device_data[usbvision->dev_model].model_string,
 495                 sizeof(vc->card));
 496         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 497         vc->device_caps = usbvision->have_tuner ? V4L2_CAP_TUNER : 0;
 498         if (vdev->vfl_type == VFL_TYPE_GRABBER)
 499                 vc->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
 500                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 501         else
 502                 vc->device_caps |= V4L2_CAP_RADIO;
 503
 504         vc->capabilities = vc->device_caps | V4L2_CAP_VIDEO_CAPTURE |
 505                 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
 506         if (usbvision_device_data[usbvision->dev_model].radio)
 507                 vc->capabilities |= V4L2_CAP_RADIO;
 508         return 0;
 509 }
 510
 511 static int vidioc_enum_input(struct file *file, void *priv,
 512                                 struct v4l2_input *vi)
 513 {
 514         struct usb_usbvision *usbvision = video_drvdata(file);
 515         int chan;
 516
 517         if (vi->index >= usbvision->video_inputs)
 518                 return -EINVAL;
 519         if (usbvision->have_tuner)
 520                 chan = vi->index;
 521         else
 522                 chan = vi->index + 1; /* skip Television string*/
 523
 524         /* Determine the requested input characteristics
 525            specific for each usbvision card model */
 526         switch (chan) {
 527         case 0:
 528                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 529                         strcpy(vi->name, "White Video Input");
 530                 } else {
 531                         strcpy(vi->name, "Television");
 532                         vi->type = V4L2_INPUT_TYPE_TUNER;
 533                         vi->tuner = chan;
 534                         vi->std = USBVISION_NORMS;
 535                 }
 536                 break;
 537         case 1:
 538                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 539                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 540                         strcpy(vi->name, "Green Video Input");
 541                 else
 542                         strcpy(vi->name, "Composite Video Input");
 543                 vi->std = USBVISION_NORMS;
 544                 break;
 545         case 2:
 546                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 547                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 548                         strcpy(vi->name, "Yellow Video Input");
 549                 else
 550                         strcpy(vi->name, "S-Video Input");
 551                 vi->std = USBVISION_NORMS;
 552                 break;
 553         case 3:
 554                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 555                 strcpy(vi->name, "Red Video Input");
 556                 vi->std = USBVISION_NORMS;
 557                 break;
 558         }
 559         return 0;
 560 }
 561
 562 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 563 {
 564         struct usb_usbvision *usbvision = video_drvdata(file);
 565
 566         *input = usbvision->ctl_input;
 567         return 0;
 568 }
 569
 570 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 571 {
 572         struct usb_usbvision *usbvision = video_drvdata(file);
 573
 574         if (input >= usbvision->video_inputs)
 575                 return -EINVAL;
 576
 577         usbvision_muxsel(usbvision, input);
 578         usbvision_set_input(usbvision);
 579         usbvision_set_output(usbvision,
 580                              usbvision->curwidth,
 581                              usbvision->curheight);
 582         return 0;
 583 }
 584
 585 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
 586 {
 587         struct usb_usbvision *usbvision = video_drvdata(file);
 588
 589         usbvision->tvnorm_id = id;
 590
 591         call_all(usbvision, video, s_std, usbvision->tvnorm_id);
 592         /* propagate the change to the decoder */
 593         usbvision_muxsel(usbvision, usbvision->ctl_input);
 594
 595         return 0;
 596 }
 597
 598 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 599 {
 600         struct usb_usbvision *usbvision = video_drvdata(file);
 601
 602         *id = usbvision->tvnorm_id;
 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 (vt->index)  /* Only tuner 0 */
 612                 return -EINVAL;
 613         if (vt->type == V4L2_TUNER_RADIO)
 614                 strcpy(vt->name, "Radio");
 615         else
 616                 strcpy(vt->name, "Television");
 617
 618         /* Let clients fill in the remainder of this struct */
 619         call_all(usbvision, tuner, g_tuner, vt);
 620
 621         return 0;
 622 }
 623
 624 static int vidioc_s_tuner(struct file *file, void *priv,
 625                                 const struct v4l2_tuner *vt)
 626 {
 627         struct usb_usbvision *usbvision = video_drvdata(file);
 628
 629         /* Only one tuner for now */
 630         if (vt->index)
 631                 return -EINVAL;
 632         /* let clients handle this */
 633         call_all(usbvision, tuner, s_tuner, vt);
 634
 635         return 0;
 636 }
 637
 638 static int vidioc_g_frequency(struct file *file, void *priv,
 639                                 struct v4l2_frequency *freq)
 640 {
 641         struct usb_usbvision *usbvision = video_drvdata(file);
 642
 643         /* Only one tuner */
 644         if (freq->tuner)
 645                 return -EINVAL;
 646         if (freq->type == V4L2_TUNER_RADIO)
 647                 freq->frequency = usbvision->radio_freq;
 648         else
 649                 freq->frequency = usbvision->tv_freq;
 650
 651         return 0;
 652 }
 653
 654 static int vidioc_s_frequency(struct file *file, void *priv,
 655                                 const struct v4l2_frequency *freq)
 656 {
 657         struct usb_usbvision *usbvision = video_drvdata(file);
 658         struct v4l2_frequency new_freq = *freq;
 659
 660         /* Only one tuner for now */
 661         if (freq->tuner)
 662                 return -EINVAL;
 663
 664         call_all(usbvision, tuner, s_frequency, freq);
 665         call_all(usbvision, tuner, g_frequency, &new_freq);
 666         if (freq->type == V4L2_TUNER_RADIO)
 667                 usbvision->radio_freq = new_freq.frequency;
 668         else
 669                 usbvision->tv_freq = new_freq.frequency;
 670
 671         return 0;
 672 }
 673
 674 static int vidioc_reqbufs(struct file *file,
 675                            void *priv, struct v4l2_requestbuffers *vr)
 676 {
 677         struct usb_usbvision *usbvision = video_drvdata(file);
 678         int ret;
 679
 680         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 681
 682         /* Check input validity:
 683            the user must do a VIDEO CAPTURE and MMAP method. */
 684         if (vr->memory != V4L2_MEMORY_MMAP)
 685                 return -EINVAL;
 686
 687         if (usbvision->streaming == stream_on) {
 688                 ret = usbvision_stream_interrupt(usbvision);
 689                 if (ret)
 690                         return ret;
 691         }
 692
 693         usbvision_frames_free(usbvision);
 694         usbvision_empty_framequeues(usbvision);
 695         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 696
 697         usbvision->cur_frame = NULL;
 698
 699         return 0;
 700 }
 701
 702 static int vidioc_querybuf(struct file *file,
 703                             void *priv, struct v4l2_buffer *vb)
 704 {
 705         struct usb_usbvision *usbvision = video_drvdata(file);
 706         struct usbvision_frame *frame;
 707
 708         /* FIXME : must control
 709            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 710         if (vb->index >= usbvision->num_frames)
 711                 return -EINVAL;
 712         /* Updating the corresponding frame state */
 713         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 714         frame = &usbvision->frame[vb->index];
 715         if (frame->grabstate >= frame_state_ready)
 716                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 717         if (frame->grabstate >= frame_state_done)
 718                 vb->flags |= V4L2_BUF_FLAG_DONE;
 719         if (frame->grabstate == frame_state_unused)
 720                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 721         vb->memory = V4L2_MEMORY_MMAP;
 722
 723         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 724
 725         vb->memory = V4L2_MEMORY_MMAP;
 726         vb->field = V4L2_FIELD_NONE;
 727         vb->length = usbvision->curwidth *
 728                 usbvision->curheight *
 729                 usbvision->palette.bytes_per_pixel;
 730         vb->timestamp = usbvision->frame[vb->index].timestamp;
 731         vb->sequence = usbvision->frame[vb->index].sequence;
 732         return 0;
 733 }
 734
 735 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 736 {
 737         struct usb_usbvision *usbvision = video_drvdata(file);
 738         struct usbvision_frame *frame;
 739         unsigned long lock_flags;
 740
 741         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 742         if (vb->index >= usbvision->num_frames)
 743                 return -EINVAL;
 744
 745         frame = &usbvision->frame[vb->index];
 746
 747         if (frame->grabstate != frame_state_unused)
 748                 return -EAGAIN;
 749
 750         /* Mark it as ready and enqueue frame */
 751         frame->grabstate = frame_state_ready;
 752         frame->scanstate = scan_state_scanning;
 753         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 754
 755         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 756
 757         /* set v4l2_format index */
 758         frame->v4l2_format = usbvision->palette;
 759
 760         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 761         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 762         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 763
 764         return 0;
 765 }
 766
 767 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 768 {
 769         struct usb_usbvision *usbvision = video_drvdata(file);
 770         int ret;
 771         struct usbvision_frame *f;
 772         unsigned long lock_flags;
 773
 774         if (list_empty(&(usbvision->outqueue))) {
 775                 if (usbvision->streaming == stream_idle)
 776                         return -EINVAL;
 777                 ret = wait_event_interruptible
 778                         (usbvision->wait_frame,
 779                          !list_empty(&(usbvision->outqueue)));
 780                 if (ret)
 781                         return ret;
 782         }
 783
 784         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 785         f = list_entry(usbvision->outqueue.next,
 786                        struct usbvision_frame, frame);
 787         list_del(usbvision->outqueue.next);
 788         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 789
 790         f->grabstate = frame_state_unused;
 791
 792         vb->memory = V4L2_MEMORY_MMAP;
 793         vb->flags = V4L2_BUF_FLAG_MAPPED |
 794                 V4L2_BUF_FLAG_QUEUED |
 795                 V4L2_BUF_FLAG_DONE |
 796                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 797         vb->index = f->index;
 798         vb->sequence = f->sequence;
 799         vb->timestamp = f->timestamp;
 800         vb->field = V4L2_FIELD_NONE;
 801         vb->bytesused = f->scanlength;
 802
 803         return 0;
 804 }
 805
 806 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 807 {
 808         struct usb_usbvision *usbvision = video_drvdata(file);
 809
 810         usbvision->streaming = stream_on;
 811         call_all(usbvision, video, s_stream, 1);
 812
 813         return 0;
 814 }
 815
 816 static int vidioc_streamoff(struct file *file,
 817                             void *priv, enum v4l2_buf_type type)
 818 {
 819         struct usb_usbvision *usbvision = video_drvdata(file);
 820
 821         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 822                 return -EINVAL;
 823
 824         if (usbvision->streaming == stream_on) {
 825                 usbvision_stream_interrupt(usbvision);
 826                 /* Stop all video streamings */
 827                 call_all(usbvision, video, s_stream, 0);
 828         }
 829         usbvision_empty_framequeues(usbvision);
 830
 831         return 0;
 832 }
 833
 834 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 835                                         struct v4l2_fmtdesc *vfd)
 836 {
 837         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 838                 return -EINVAL;
 839         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 840         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 841         return 0;
 842 }
 843
 844 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 845                                         struct v4l2_format *vf)
 846 {
 847         struct usb_usbvision *usbvision = video_drvdata(file);
 848         vf->fmt.pix.width = usbvision->curwidth;
 849         vf->fmt.pix.height = usbvision->curheight;
 850         vf->fmt.pix.pixelformat = usbvision->palette.format;
 851         vf->fmt.pix.bytesperline =
 852                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 853         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 854         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 855         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 856
 857         return 0;
 858 }
 859
 860 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 861                                struct v4l2_format *vf)
 862 {
 863         struct usb_usbvision *usbvision = video_drvdata(file);
 864         int format_idx;
 865
 866         /* Find requested format in available ones */
 867         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 868                 if (vf->fmt.pix.pixelformat ==
 869                    usbvision_v4l2_format[format_idx].format) {
 870                         usbvision->palette = usbvision_v4l2_format[format_idx];
 871                         break;
 872                 }
 873         }
 874         /* robustness */
 875         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 876                 return -EINVAL;
 877         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 878         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 879
 880         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 881                 usbvision->palette.bytes_per_pixel;
 882         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 883         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 884         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 885
 886         return 0;
 887 }
 888
 889 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 890                                struct v4l2_format *vf)
 891 {
 892         struct usb_usbvision *usbvision = video_drvdata(file);
 893         int ret;
 894
 895         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 896         if (ret)
 897                 return ret;
 898
 899         /* stop io in case it is already in progress */
 900         if (usbvision->streaming == stream_on) {
 901                 ret = usbvision_stream_interrupt(usbvision);
 902                 if (ret)
 903                         return ret;
 904         }
 905         usbvision_frames_free(usbvision);
 906         usbvision_empty_framequeues(usbvision);
 907
 908         usbvision->cur_frame = NULL;
 909
 910         /* by now we are committed to the new data... */
 911         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 912
 913         return 0;
 914 }
 915
 916 static ssize_t usbvision_read(struct file *file, char __user *buf,
 917                       size_t count, loff_t *ppos)
 918 {
 919         struct usb_usbvision *usbvision = video_drvdata(file);
 920         int noblock = file->f_flags & O_NONBLOCK;
 921         unsigned long lock_flags;
 922         int ret, i;
 923         struct usbvision_frame *frame;
 924
 925         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 926                (unsigned long)count, noblock);
 927
 928         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 929                 return -EFAULT;
 930
 931         /* This entry point is compatible with the mmap routines
 932            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 933            to get frames or call read on the device. */
 934         if (!usbvision->num_frames) {
 935                 /* First, allocate some frames to work with
 936                    if this has not been done with VIDIOC_REQBUF */
 937                 usbvision_frames_free(usbvision);
 938                 usbvision_empty_framequeues(usbvision);
 939                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 940         }
 941
 942         if (usbvision->streaming != stream_on) {
 943                 /* no stream is running, make it running ! */
 944                 usbvision->streaming = stream_on;
 945                 call_all(usbvision, video, s_stream, 1);
 946         }
 947
 948         /* Then, enqueue as many frames as possible
 949            (like a user of VIDIOC_QBUF would do) */
 950         for (i = 0; i < usbvision->num_frames; i++) {
 951                 frame = &usbvision->frame[i];
 952                 if (frame->grabstate == frame_state_unused) {
 953                         /* Mark it as ready and enqueue frame */
 954                         frame->grabstate = frame_state_ready;
 955                         frame->scanstate = scan_state_scanning;
 956                         /* Accumulated in usbvision_parse_data() */
 957                         frame->scanlength = 0;
 958
 959                         /* set v4l2_format index */
 960                         frame->v4l2_format = usbvision->palette;
 961
 962                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 963                         list_add_tail(&frame->frame, &usbvision->inqueue);
 964                         spin_unlock_irqrestore(&usbvision->queue_lock,
 965                                                lock_flags);
 966                 }
 967         }
 968
 969         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
 970         if (list_empty(&(usbvision->outqueue))) {
 971                 if (noblock)
 972                         return -EAGAIN;
 973
 974                 ret = wait_event_interruptible
 975                         (usbvision->wait_frame,
 976                          !list_empty(&(usbvision->outqueue)));
 977                 if (ret)
 978                         return ret;
 979         }
 980
 981         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 982         frame = list_entry(usbvision->outqueue.next,
 983                            struct usbvision_frame, frame);
 984         list_del(usbvision->outqueue.next);
 985         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 986
 987         /* An error returns an empty frame */
 988         if (frame->grabstate == frame_state_error) {
 989                 frame->bytes_read = 0;
 990                 return 0;
 991         }
 992
 993         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
 994                __func__,
 995                frame->index, frame->bytes_read, frame->scanlength);
 996
 997         /* copy bytes to user space; we allow for partials reads */
 998         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
 999                 count = frame->scanlength - frame->bytes_read;
1000
1001         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1002                 return -EFAULT;
1003
1004         frame->bytes_read += count;
1005         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1006                __func__,
1007                (unsigned long)count, frame->bytes_read);
1008
1009 #if 1
1010         /*
1011          * FIXME:
1012          * For now, forget the frame if it has not been read in one shot.
1013          */
1014         frame->bytes_read = 0;
1015
1016         /* Mark it as available to be used again. */
1017         frame->grabstate = frame_state_unused;
1018 #else
1019         if (frame->bytes_read >= frame->scanlength) {
1020                 /* All data has been read */
1021                 frame->bytes_read = 0;
1022
1023                 /* Mark it as available to be used again. */
1024                 frame->grabstate = frame_state_unused;
1025         }
1026 #endif
1027
1028         return count;
1029 }
1030
1031 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1032                       size_t count, loff_t *ppos)
1033 {
1034         struct usb_usbvision *usbvision = video_drvdata(file);
1035         int res;
1036
1037         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1038                 return -ERESTARTSYS;
1039         res = usbvision_read(file, buf, count, ppos);
1040         mutex_unlock(&usbvision->v4l2_lock);
1041         return res;
1042 }
1043
1044 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1045 {
1046         unsigned long size = vma->vm_end - vma->vm_start,
1047                 start = vma->vm_start;
1048         void *pos;
1049         u32 i;
1050         struct usb_usbvision *usbvision = video_drvdata(file);
1051
1052         PDEBUG(DBG_MMAP, "mmap");
1053
1054         if (!USBVISION_IS_OPERATIONAL(usbvision))
1055                 return -EFAULT;
1056
1057         if (!(vma->vm_flags & VM_WRITE) ||
1058             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1059                 return -EINVAL;
1060         }
1061
1062         for (i = 0; i < usbvision->num_frames; i++) {
1063                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1064                     vma->vm_pgoff)
1065                         break;
1066         }
1067         if (i == usbvision->num_frames) {
1068                 PDEBUG(DBG_MMAP,
1069                        "mmap: user supplied mapping address is out of range");
1070                 return -EINVAL;
1071         }
1072
1073         /* VM_IO is eventually going to replace PageReserved altogether */
1074         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1075
1076         pos = usbvision->frame[i].data;
1077         while (size > 0) {
1078                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1079                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1080                         return -EAGAIN;
1081                 }
1082                 start += PAGE_SIZE;
1083                 pos += PAGE_SIZE;
1084                 size -= PAGE_SIZE;
1085         }
1086
1087         return 0;
1088 }
1089
1090 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1091 {
1092         struct usb_usbvision *usbvision = video_drvdata(file);
1093         int res;
1094
1095         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1096                 return -ERESTARTSYS;
1097         res = usbvision_mmap(file, vma);
1098         mutex_unlock(&usbvision->v4l2_lock);
1099         return res;
1100 }
1101
1102 /*
1103  * Here comes the stuff for radio on usbvision based devices
1104  *
1105  */
1106 static int usbvision_radio_open(struct file *file)
1107 {
1108         struct usb_usbvision *usbvision = video_drvdata(file);
1109         int err_code = 0;
1110
1111         PDEBUG(DBG_IO, "%s:", __func__);
1112
1113         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1114                 return -ERESTARTSYS;
1115         err_code = v4l2_fh_open(file);
1116         if (err_code)
1117                 goto out;
1118         if (usbvision->user) {
1119                 dev_err(&usbvision->rdev.dev,
1120                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1121                                 __func__);
1122                 err_code = -EBUSY;
1123         } else {
1124                 /* Alternate interface 1 is is the biggest frame size */
1125                 err_code = usbvision_set_alternate(usbvision);
1126                 if (err_code < 0) {
1127                         usbvision->last_error = err_code;
1128                         err_code = -EBUSY;
1129                         goto out;
1130                 }
1131
1132                 /* If so far no errors then we shall start the radio */
1133                 usbvision->radio = 1;
1134                 call_all(usbvision, tuner, s_radio);
1135                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1136                 usbvision->user++;
1137         }
1138 out:
1139         mutex_unlock(&usbvision->v4l2_lock);
1140         return err_code;
1141 }
1142
1143
1144 static int usbvision_radio_close(struct file *file)
1145 {
1146         struct usb_usbvision *usbvision = video_drvdata(file);
1147
1148         PDEBUG(DBG_IO, "");
1149
1150         mutex_lock(&usbvision->v4l2_lock);
1151         /* Set packet size to 0 */
1152         usbvision->iface_alt = 0;
1153         usb_set_interface(usbvision->dev, usbvision->iface,
1154                                     usbvision->iface_alt);
1155
1156         usbvision_audio_off(usbvision);
1157         usbvision->radio = 0;
1158         usbvision->user--;
1159
1160         if (usbvision->remove_pending) {
1161                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1162                 v4l2_fh_release(file);
1163                 usbvision_release(usbvision);
1164                 return 0;
1165         }
1166
1167         mutex_unlock(&usbvision->v4l2_lock);
1168         PDEBUG(DBG_IO, "success");
1169         return v4l2_fh_release(file);
1170 }
1171
1172 /* Video registration stuff */
1173
1174 /* Video template */
1175 static const struct v4l2_file_operations usbvision_fops = {
1176         .owner             = THIS_MODULE,
1177         .open           = usbvision_v4l2_open,
1178         .release        = usbvision_v4l2_close,
1179         .read           = usbvision_v4l2_read,
1180         .mmap           = usbvision_v4l2_mmap,
1181         .unlocked_ioctl = video_ioctl2,
1182 };
1183
1184 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1185         .vidioc_querycap      = vidioc_querycap,
1186         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1187         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1188         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1189         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1190         .vidioc_reqbufs       = vidioc_reqbufs,
1191         .vidioc_querybuf      = vidioc_querybuf,
1192         .vidioc_qbuf          = vidioc_qbuf,
1193         .vidioc_dqbuf         = vidioc_dqbuf,
1194         .vidioc_s_std         = vidioc_s_std,
1195         .vidioc_g_std         = vidioc_g_std,
1196         .vidioc_enum_input    = vidioc_enum_input,
1197         .vidioc_g_input       = vidioc_g_input,
1198         .vidioc_s_input       = vidioc_s_input,
1199         .vidioc_streamon      = vidioc_streamon,
1200         .vidioc_streamoff     = vidioc_streamoff,
1201         .vidioc_g_tuner       = vidioc_g_tuner,
1202         .vidioc_s_tuner       = vidioc_s_tuner,
1203         .vidioc_g_frequency   = vidioc_g_frequency,
1204         .vidioc_s_frequency   = vidioc_s_frequency,
1205         .vidioc_log_status    = v4l2_ctrl_log_status,
1206         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1207         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1208 #ifdef CONFIG_VIDEO_ADV_DEBUG
1209         .vidioc_g_register    = vidioc_g_register,
1210         .vidioc_s_register    = vidioc_s_register,
1211 #endif
1212 };
1213
1214 static struct video_device usbvision_video_template = {
1215         .fops           = &usbvision_fops,
1216         .ioctl_ops      = &usbvision_ioctl_ops,
1217         .name           = "usbvision-video",
1218         .release        = video_device_release_empty,
1219         .tvnorms        = USBVISION_NORMS,
1220 };
1221
1222
1223 /* Radio template */
1224 static const struct v4l2_file_operations usbvision_radio_fops = {
1225         .owner             = THIS_MODULE,
1226         .open           = usbvision_radio_open,
1227         .release        = usbvision_radio_close,
1228         .poll           = v4l2_ctrl_poll,
1229         .unlocked_ioctl = video_ioctl2,
1230 };
1231
1232 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1233         .vidioc_querycap      = vidioc_querycap,
1234         .vidioc_g_tuner       = vidioc_g_tuner,
1235         .vidioc_s_tuner       = vidioc_s_tuner,
1236         .vidioc_g_frequency   = vidioc_g_frequency,
1237         .vidioc_s_frequency   = vidioc_s_frequency,
1238         .vidioc_log_status    = v4l2_ctrl_log_status,
1239         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1240         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1241 };
1242
1243 static struct video_device usbvision_radio_template = {
1244         .fops           = &usbvision_radio_fops,
1245         .name           = "usbvision-radio",
1246         .release        = video_device_release_empty,
1247         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1248 };
1249
1250
1251 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1252                                 struct video_device *vdev,
1253                                 const struct video_device *vdev_template,
1254                                 const char *name)
1255 {
1256         struct usb_device *usb_dev = usbvision->dev;
1257
1258         if (usb_dev == NULL) {
1259                 dev_err(&usbvision->dev->dev,
1260                         "%s: usbvision->dev is not set\n", __func__);
1261                 return;
1262         }
1263
1264         *vdev = *vdev_template;
1265         vdev->lock = &usbvision->v4l2_lock;
1266         vdev->v4l2_dev = &usbvision->v4l2_dev;
1267         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1268         video_set_drvdata(vdev, usbvision);
1269 }
1270
1271 /* unregister video4linux devices */
1272 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1273 {
1274         /* Radio Device: */
1275         if (video_is_registered(&usbvision->rdev)) {
1276                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1277                        video_device_node_name(&usbvision->rdev));
1278                 video_unregister_device(&usbvision->rdev);
1279         }
1280
1281         /* Video Device: */
1282         if (video_is_registered(&usbvision->vdev)) {
1283                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1284                        video_device_node_name(&usbvision->vdev));
1285                 video_unregister_device(&usbvision->vdev);
1286         }
1287 }
1288
1289 /* register video4linux devices */
1290 static int usbvision_register_video(struct usb_usbvision *usbvision)
1291 {
1292         int res = -ENOMEM;
1293
1294         /* Video Device: */
1295         usbvision_vdev_init(usbvision, &usbvision->vdev,
1296                               &usbvision_video_template, "USBVision Video");
1297         if (!usbvision->have_tuner) {
1298                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1299                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1300                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1301                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1302         }
1303         if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1304                 goto err_exit;
1305         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1306                usbvision->nr, video_device_node_name(&usbvision->vdev));
1307
1308         /* Radio Device: */
1309         if (usbvision_device_data[usbvision->dev_model].radio) {
1310                 /* usbvision has radio */
1311                 usbvision_vdev_init(usbvision, &usbvision->rdev,
1312                               &usbvision_radio_template, "USBVision Radio");
1313                 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1314                         goto err_exit;
1315                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1316                        usbvision->nr, video_device_node_name(&usbvision->rdev));
1317         }
1318         /* all done */
1319         return 0;
1320
1321  err_exit:
1322         dev_err(&usbvision->dev->dev,
1323                 "USBVision[%d]: video_register_device() failed\n",
1324                         usbvision->nr);
1325         usbvision_unregister_video(usbvision);
1326         return res;
1327 }
1328
1329 /*
1330  * usbvision_alloc()
1331  *
1332  * This code allocates the struct usb_usbvision.
1333  * It is filled with default values.
1334  *
1335  * Returns NULL on error, a pointer to usb_usbvision else.
1336  *
1337  */
1338 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1339                                              struct usb_interface *intf)
1340 {
1341         struct usb_usbvision *usbvision;
1342
1343         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1344         if (usbvision == NULL)
1345                 return NULL;
1346
1347         usbvision->dev = dev;
1348         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1349                 goto err_free;
1350
1351         if (v4l2_ctrl_handler_init(&usbvision->hdl, 4))
1352                 goto err_unreg;
1353         usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl;
1354         mutex_init(&usbvision->v4l2_lock);
1355
1356         /* prepare control urb for control messages during interrupts */
1357         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1358         if (usbvision->ctrl_urb == NULL)
1359                 goto err_unreg;
1360         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1361
1362         return usbvision;
1363
1364 err_unreg:
1365         v4l2_ctrl_handler_free(&usbvision->hdl);
1366         v4l2_device_unregister(&usbvision->v4l2_dev);
1367 err_free:
1368         kfree(usbvision);
1369         return NULL;
1370 }
1371
1372 /*
1373  * usbvision_release()
1374  *
1375  * This code does final release of struct usb_usbvision. This happens
1376  * after the device is disconnected -and- all clients closed their files.
1377  *
1378  */
1379 static void usbvision_release(struct usb_usbvision *usbvision)
1380 {
1381         PDEBUG(DBG_PROBE, "");
1382
1383         usbvision->initialized = 0;
1384
1385         usbvision_remove_sysfs(&usbvision->vdev);
1386         usbvision_unregister_video(usbvision);
1387         kfree(usbvision->alt_max_pkt_size);
1388
1389         usb_free_urb(usbvision->ctrl_urb);
1390
1391         v4l2_ctrl_handler_free(&usbvision->hdl);
1392         v4l2_device_unregister(&usbvision->v4l2_dev);
1393         kfree(usbvision);
1394
1395         PDEBUG(DBG_PROBE, "success");
1396 }
1397
1398
1399 /*********************** usb interface **********************************/
1400
1401 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1402 {
1403         int model;
1404
1405         if (usbvision == NULL)
1406                 return;
1407
1408         model = usbvision->dev_model;
1409         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1410
1411         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1412                 usbvision->vin_reg2_preset =
1413                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1414         } else {
1415                 usbvision->vin_reg2_preset = 0;
1416         }
1417
1418         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1419         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1420         usbvision->ctl_input = 0;
1421         usbvision->radio_freq = 87.5 * 16000;
1422         usbvision->tv_freq = 400 * 16;
1423
1424         /* This should be here to make i2c clients to be able to register */
1425         /* first switch off audio */
1426         if (usbvision_device_data[model].audio_channels > 0)
1427                 usbvision_audio_off(usbvision);
1428         /* and then power up the tuner */
1429         usbvision_power_on(usbvision);
1430         usbvision_i2c_register(usbvision);
1431 }
1432
1433 /*
1434  * usbvision_probe()
1435  *
1436  * This procedure queries device descriptor and accepts the interface
1437  * if it looks like USBVISION video device
1438  *
1439  */
1440 static int usbvision_probe(struct usb_interface *intf,
1441                            const struct usb_device_id *devid)
1442 {
1443         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1444         struct usb_interface *uif;
1445         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1446         const struct usb_host_interface *interface;
1447         struct usb_usbvision *usbvision = NULL;
1448         const struct usb_endpoint_descriptor *endpoint;
1449         int model, i, ret;
1450
1451         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1452                                 dev->descriptor.idVendor,
1453                                 dev->descriptor.idProduct, ifnum);
1454
1455         model = devid->driver_info;
1456         if (model < 0 || model >= usbvision_device_data_size) {
1457                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1458                 ret = -ENODEV;
1459                 goto err_usb;
1460         }
1461         printk(KERN_INFO "%s: %s found\n", __func__,
1462                                 usbvision_device_data[model].model_string);
1463
1464         if (usbvision_device_data[model].interface >= 0)
1465                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1466         else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1467                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1468         else {
1469                 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1470                     ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1471                 ret = -ENODEV;
1472                 goto err_usb;
1473         }
1474
1475         if (interface->desc.bNumEndpoints < 2) {
1476                 dev_err(&intf->dev, "interface %d has %d endpoints, but must"
1477                     " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
1478                 ret = -ENODEV;
1479                 goto err_usb;
1480         }
1481         endpoint = &interface->endpoint[1].desc;
1482
1483         if (!usb_endpoint_xfer_isoc(endpoint)) {
1484                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1485                     __func__, ifnum);
1486                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1487                     __func__, endpoint->bmAttributes);
1488                 ret = -ENODEV;
1489                 goto err_usb;
1490         }
1491         if (usb_endpoint_dir_out(endpoint)) {
1492                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1493                     __func__, ifnum);
1494                 ret = -ENODEV;
1495                 goto err_usb;
1496         }
1497
1498         usbvision = usbvision_alloc(dev, intf);
1499         if (usbvision == NULL) {
1500                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1501                 ret = -ENOMEM;
1502                 goto err_usb;
1503         }
1504
1505         if (dev->descriptor.bNumConfigurations > 1)
1506                 usbvision->bridge_type = BRIDGE_NT1004;
1507         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1508                 usbvision->bridge_type = BRIDGE_NT1005;
1509         else
1510                 usbvision->bridge_type = BRIDGE_NT1003;
1511         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1512
1513         /* compute alternate max packet sizes */
1514         uif = dev->actconfig->interface[0];
1515
1516         usbvision->num_alt = uif->num_altsetting;
1517         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1518         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1519         if (usbvision->alt_max_pkt_size == NULL) {
1520                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1521                 ret = -ENOMEM;
1522                 goto err_pkt;
1523         }
1524
1525         for (i = 0; i < usbvision->num_alt; i++) {
1526                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1527                                       wMaxPacketSize);
1528                 usbvision->alt_max_pkt_size[i] =
1529                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1530                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1531                        usbvision->alt_max_pkt_size[i]);
1532         }
1533
1534
1535         usbvision->nr = usbvision_nr++;
1536
1537         spin_lock_init(&usbvision->queue_lock);
1538         init_waitqueue_head(&usbvision->wait_frame);
1539         init_waitqueue_head(&usbvision->wait_stream);
1540
1541         usbvision->have_tuner = usbvision_device_data[model].tuner;
1542         if (usbvision->have_tuner)
1543                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1544
1545         usbvision->dev_model = model;
1546         usbvision->remove_pending = 0;
1547         usbvision->iface = ifnum;
1548         usbvision->iface_alt = 0;
1549         usbvision->video_endp = endpoint->bEndpointAddress;
1550         usbvision->isoc_packet_size = 0;
1551         usbvision->usb_bandwidth = 0;
1552         usbvision->user = 0;
1553         usbvision->streaming = stream_off;
1554         usbvision_configure_video(usbvision);
1555         usbvision_register_video(usbvision);
1556
1557         usbvision_create_sysfs(&usbvision->vdev);
1558
1559         PDEBUG(DBG_PROBE, "success");
1560         return 0;
1561
1562 err_pkt:
1563         usbvision_release(usbvision);
1564 err_usb:
1565         usb_put_dev(dev);
1566         return ret;
1567 }
1568
1569
1570 /*
1571  * usbvision_disconnect()
1572  *
1573  * This procedure stops all driver activity, deallocates interface-private
1574  * structure (pointed by 'ptr') and after that driver should be removable
1575  * with no ill consequences.
1576  *
1577  */
1578 static void usbvision_disconnect(struct usb_interface *intf)
1579 {
1580         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1581
1582         PDEBUG(DBG_PROBE, "");
1583
1584         if (usbvision == NULL) {
1585                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1586                 return;
1587         }
1588
1589         mutex_lock(&usbvision->v4l2_lock);
1590
1591         /* At this time we ask to cancel outstanding URBs */
1592         usbvision_stop_isoc(usbvision);
1593
1594         v4l2_device_disconnect(&usbvision->v4l2_dev);
1595         usbvision_i2c_unregister(usbvision);
1596         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1597
1598         usb_put_dev(usbvision->dev);
1599         usbvision->dev = NULL;  /* USB device is no more */
1600
1601         mutex_unlock(&usbvision->v4l2_lock);
1602
1603         if (usbvision->user) {
1604                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1605                        __func__);
1606                 wake_up_interruptible(&usbvision->wait_frame);
1607                 wake_up_interruptible(&usbvision->wait_stream);
1608         } else {
1609                 usbvision_release(usbvision);
1610         }
1611
1612         PDEBUG(DBG_PROBE, "success");
1613 }
1614
1615 static struct usb_driver usbvision_driver = {
1616         .name           = "usbvision",
1617         .id_table       = usbvision_table,
1618         .probe          = usbvision_probe,
1619         .disconnect     = usbvision_disconnect,
1620 };
1621
1622 /*
1623  * usbvision_init()
1624  *
1625  * This code is run to initialize the driver.
1626  *
1627  */
1628 static int __init usbvision_init(void)
1629 {
1630         int err_code;
1631
1632         PDEBUG(DBG_PROBE, "");
1633
1634         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1635         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1636         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1637
1638         /* disable planar mode support unless compression enabled */
1639         if (isoc_mode != ISOC_MODE_COMPRESS) {
1640                 /* FIXME : not the right way to set supported flag */
1641                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1642                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1643         }
1644
1645         err_code = usb_register(&usbvision_driver);
1646
1647         if (err_code == 0) {
1648                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1649                 PDEBUG(DBG_PROBE, "success");
1650         }
1651         return err_code;
1652 }
1653
1654 static void __exit usbvision_exit(void)
1655 {
1656         PDEBUG(DBG_PROBE, "");
1657
1658         usb_deregister(&usbvision_driver);
1659         PDEBUG(DBG_PROBE, "success");
1660 }
1661
1662 module_init(usbvision_init);
1663 module_exit(usbvision_exit);