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  * Let's call the version 0.... until compression decoding is completely
  21  * implemented.
  22  *
  23  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  24  * It was based on USB CPiA driver written by Peter Pregler,
  25  * Scott J. Bertin and Johannes Erdfelt
  26  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  27  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  28  * Updates to driver completed by Dwaine P. Garden
  29  *
  30  *
  31  * TODO:
  32  *     - use submit_urb for all setup packets
  33  *     - Fix memory settings for nt1004. It is 4 times as big as the
  34  *       nt1003 memory.
  35  *     - Add audio on endpoint 3 for nt1004 chip.
  36  *         Seems impossible, needs a codec interface.  Which one?
  37  *     - Clean up the driver.
  38  *     - optimization for performance.
  39  *     - Add Videotext capability (VBI).  Working on it.....
  40  *     - Check audio for other devices
  41  *
  42  */
  43
  44 #include <linux/kernel.h>
  45 #include <linux/list.h>
  46 #include <linux/timer.h>
  47 #include <linux/slab.h>
  48 #include <linux/mm.h>
  49 #include <linux/highmem.h>
  50 #include <linux/vmalloc.h>
  51 #include <linux/module.h>
  52 #include <linux/init.h>
  53 #include <linux/spinlock.h>
  54 #include <linux/io.h>
  55 #include <linux/videodev2.h>
  56 #include <linux/i2c.h>
  57
  58 #include <media/i2c/saa7115.h>
  59 #include <media/v4l2-common.h>
  60 #include <media/v4l2-ioctl.h>
  61 #include <media/v4l2-event.h>
  62 #include <media/tuner.h>
  63
  64 #include <linux/workqueue.h>
  65
  66 #include "usbvision.h"
  67 #include "usbvision-cards.h"
  68
  69 #define DRIVER_AUTHOR                                   \
  70         "Joerg Heckenbach <joerg@heckenbach-aw.de>, "   \
  71         "Dwaine Garden <DwaineGarden@rogers.com>"
  72 #define DRIVER_NAME "usbvision"
  73 #define DRIVER_ALIAS "USBVision"
  74 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  75 #define USBVISION_VERSION_STRING "0.9.11"
  76
  77 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  78
  79
  80 #ifdef USBVISION_DEBUG
  81         #define PDEBUG(level, fmt, args...) { \
  82                 if (video_debug & (level)) \
  83                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  84                                 __func__, __LINE__ , ## args); \
  85         }
  86 #else
  87         #define PDEBUG(level, fmt, args...) do {} while (0)
  88 #endif
  89
  90 #define DBG_IO          (1 << 1)
  91 #define DBG_PROBE       (1 << 2)
  92 #define DBG_MMAP        (1 << 3)
  93
  94 /* String operations */
  95 #define rmspace(str)    while (*str == ' ') str++;
  96 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
  97
  98
  99 /* sequential number of usbvision device */
 100 static int usbvision_nr;
 101
 102 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 103         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 104         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 105         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 106         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 107         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 108         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 109         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 110         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 111 };
 112
 113 /* Function prototypes */
 114 static void usbvision_release(struct usb_usbvision *usbvision);
 115
 116 /* Default initialization of device driver parameters */
 117 /* Set the default format for ISOC endpoint */
 118 static int isoc_mode = ISOC_MODE_COMPRESS;
 119 /* Set the default Debug Mode of the device driver */
 120 static int video_debug;
 121 /* Sequential Number of Video Device */
 122 static int video_nr = -1;
 123 /* Sequential Number of Radio Device */
 124 static int radio_nr = -1;
 125
 126 /* Grab parameters for the device driver */
 127
 128 /* Showing parameters under SYSFS */
 129 module_param(isoc_mode, int, 0444);
 130 module_param(video_debug, int, 0444);
 131 module_param(video_nr, int, 0444);
 132 module_param(radio_nr, int, 0444);
 133
 134 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 135 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 136 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 137 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 138
 139
 140 /* Misc stuff */
 141 MODULE_AUTHOR(DRIVER_AUTHOR);
 142 MODULE_DESCRIPTION(DRIVER_DESC);
 143 MODULE_LICENSE("GPL");
 144 MODULE_VERSION(USBVISION_VERSION_STRING);
 145 MODULE_ALIAS(DRIVER_ALIAS);
 146
 147
 148 /*****************************************************************************/
 149 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 150 /* Device information is located at /sys/class/video4linux/video0            */
 151 /* Device parameters information is located at /sys/module/usbvision         */
 152 /* Device USB Information is located at                                      */
 153 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 154 /*****************************************************************************/
 155
 156 #define YES_NO(x) ((x) ? "Yes" : "No")
 157
 158 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 159 {
 160         struct video_device *vdev = to_video_device(cd);
 161         return video_get_drvdata(vdev);
 162 }
 163
 164 static ssize_t show_version(struct device *cd,
 165                             struct device_attribute *attr, char *buf)
 166 {
 167         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 168 }
 169 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 170
 171 static ssize_t show_model(struct device *cd,
 172                           struct device_attribute *attr, char *buf)
 173 {
 174         struct video_device *vdev = to_video_device(cd);
 175         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 176         return sprintf(buf, "%s\n",
 177                        usbvision_device_data[usbvision->dev_model].model_string);
 178 }
 179 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 180
 181 static ssize_t show_hue(struct device *cd,
 182                         struct device_attribute *attr, char *buf)
 183 {
 184         struct video_device *vdev = to_video_device(cd);
 185         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 186         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 187                                                   V4L2_CID_HUE));
 188
 189         return sprintf(buf, "%d\n", val);
 190 }
 191 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 192
 193 static ssize_t show_contrast(struct device *cd,
 194                              struct device_attribute *attr, char *buf)
 195 {
 196         struct video_device *vdev = to_video_device(cd);
 197         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 198         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 199                                                   V4L2_CID_CONTRAST));
 200
 201         return sprintf(buf, "%d\n", val);
 202 }
 203 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 204
 205 static ssize_t show_brightness(struct device *cd,
 206                                struct device_attribute *attr, char *buf)
 207 {
 208         struct video_device *vdev = to_video_device(cd);
 209         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 210         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 211                                                   V4L2_CID_BRIGHTNESS));
 212
 213         return sprintf(buf, "%d\n", val);
 214 }
 215 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 216
 217 static ssize_t show_saturation(struct device *cd,
 218                                struct device_attribute *attr, char *buf)
 219 {
 220         struct video_device *vdev = to_video_device(cd);
 221         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 222         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 223                                                   V4L2_CID_SATURATION));
 224
 225         return sprintf(buf, "%d\n", val);
 226 }
 227 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 228
 229 static ssize_t show_streaming(struct device *cd,
 230                               struct device_attribute *attr, char *buf)
 231 {
 232         struct video_device *vdev = to_video_device(cd);
 233         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 234         return sprintf(buf, "%s\n",
 235                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 236 }
 237 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 238
 239 static ssize_t show_compression(struct device *cd,
 240                                 struct device_attribute *attr, char *buf)
 241 {
 242         struct video_device *vdev = to_video_device(cd);
 243         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 244         return sprintf(buf, "%s\n",
 245                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 246 }
 247 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 248
 249 static ssize_t show_device_bridge(struct device *cd,
 250                                   struct device_attribute *attr, char *buf)
 251 {
 252         struct video_device *vdev = to_video_device(cd);
 253         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 254         return sprintf(buf, "%d\n", usbvision->bridge_type);
 255 }
 256 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 257
 258 static void usbvision_create_sysfs(struct video_device *vdev)
 259 {
 260         int res;
 261
 262         if (!vdev)
 263                 return;
 264         do {
 265                 res = device_create_file(&vdev->dev, &dev_attr_version);
 266                 if (res < 0)
 267                         break;
 268                 res = device_create_file(&vdev->dev, &dev_attr_model);
 269                 if (res < 0)
 270                         break;
 271                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 272                 if (res < 0)
 273                         break;
 274                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 275                 if (res < 0)
 276                         break;
 277                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 278                 if (res < 0)
 279                         break;
 280                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 281                 if (res < 0)
 282                         break;
 283                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 284                 if (res < 0)
 285                         break;
 286                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 287                 if (res < 0)
 288                         break;
 289                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 290                 if (res >= 0)
 291                         return;
 292         } while (0);
 293
 294         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 295 }
 296
 297 static void usbvision_remove_sysfs(struct video_device *vdev)
 298 {
 299         if (vdev) {
 300                 device_remove_file(&vdev->dev, &dev_attr_version);
 301                 device_remove_file(&vdev->dev, &dev_attr_model);
 302                 device_remove_file(&vdev->dev, &dev_attr_hue);
 303                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 304                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 305                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 306                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 307                 device_remove_file(&vdev->dev, &dev_attr_compression);
 308                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 309         }
 310 }
 311
 312 /*
 313  * usbvision_open()
 314  *
 315  * This is part of Video 4 Linux API. The driver can be opened by one
 316  * client only (checks internal counter 'usbvision->user'). The procedure
 317  * then allocates buffers needed for video processing.
 318  *
 319  */
 320 static int usbvision_v4l2_open(struct file *file)
 321 {
 322         struct usb_usbvision *usbvision = video_drvdata(file);
 323         int err_code = 0;
 324
 325         PDEBUG(DBG_IO, "open");
 326
 327         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
 328                 return -ERESTARTSYS;
 329
 330         if (usbvision->remove_pending) {
 331                 err_code = -ENODEV;
 332                 goto unlock;
 333         }
 334         if (usbvision->user) {
 335                 err_code = -EBUSY;
 336         } else {
 337                 err_code = v4l2_fh_open(file);
 338                 if (err_code)
 339                         goto unlock;
 340
 341                 /* Allocate memory for the scratch ring buffer */
 342                 err_code = usbvision_scratch_alloc(usbvision);
 343                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 344                         /* Allocate intermediate decompression buffers
 345                            only if needed */
 346                         err_code = usbvision_decompress_alloc(usbvision);
 347                 }
 348                 if (err_code) {
 349                         /* Deallocate all buffers if trouble */
 350                         usbvision_scratch_free(usbvision);
 351                         usbvision_decompress_free(usbvision);
 352                 }
 353         }
 354
 355         /* If so far no errors then we shall start the camera */
 356         if (!err_code) {
 357                 /* Send init sequence only once, it's large! */
 358                 if (!usbvision->initialized) {
 359                         int setup_ok = 0;
 360                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 361                         if (setup_ok)
 362                                 usbvision->initialized = 1;
 363                         else
 364                                 err_code = -EBUSY;
 365                 }
 366
 367                 if (!err_code) {
 368                         usbvision_begin_streaming(usbvision);
 369                         err_code = usbvision_init_isoc(usbvision);
 370                         /* device must be initialized before isoc transfer */
 371                         usbvision_muxsel(usbvision, 0);
 372
 373                         /* prepare queues */
 374                         usbvision_empty_framequeues(usbvision);
 375                         usbvision->user++;
 376                 }
 377         }
 378
 379 unlock:
 380         mutex_unlock(&usbvision->v4l2_lock);
 381
 382         PDEBUG(DBG_IO, "success");
 383         return err_code;
 384 }
 385
 386 /*
 387  * usbvision_v4l2_close()
 388  *
 389  * This is part of Video 4 Linux API. The procedure
 390  * stops streaming and deallocates all buffers that were earlier
 391  * allocated in usbvision_v4l2_open().
 392  *
 393  */
 394 static int usbvision_v4l2_close(struct file *file)
 395 {
 396         struct usb_usbvision *usbvision = video_drvdata(file);
 397         int r;
 398
 399         PDEBUG(DBG_IO, "close");
 400
 401         mutex_lock(&usbvision->v4l2_lock);
 402         usbvision_audio_off(usbvision);
 403         usbvision_restart_isoc(usbvision);
 404         usbvision_stop_isoc(usbvision);
 405
 406         usbvision_decompress_free(usbvision);
 407         usbvision_frames_free(usbvision);
 408         usbvision_empty_framequeues(usbvision);
 409         usbvision_scratch_free(usbvision);
 410
 411         usbvision->user--;
 412         r = usbvision->remove_pending;
 413         mutex_unlock(&usbvision->v4l2_lock);
 414
 415         if (r) {
 416                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 417                 usbvision_release(usbvision);
 418                 return 0;
 419         }
 420
 421         PDEBUG(DBG_IO, "success");
 422         return v4l2_fh_release(file);
 423 }
 424
 425
 426 /*
 427  * usbvision_ioctl()
 428  *
 429  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 430  *
 431  */
 432 #ifdef CONFIG_VIDEO_ADV_DEBUG
 433 static int vidioc_g_register(struct file *file, void *priv,
 434                                 struct v4l2_dbg_register *reg)
 435 {
 436         struct usb_usbvision *usbvision = video_drvdata(file);
 437         int err_code;
 438
 439         /* NT100x has a 8-bit register space */
 440         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 441         if (err_code < 0) {
 442                 dev_err(&usbvision->vdev.dev,
 443                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 444                                 __func__, err_code);
 445                 return err_code;
 446         }
 447         reg->val = err_code;
 448         reg->size = 1;
 449         return 0;
 450 }
 451
 452 static int vidioc_s_register(struct file *file, void *priv,
 453                                 const struct v4l2_dbg_register *reg)
 454 {
 455         struct usb_usbvision *usbvision = video_drvdata(file);
 456         int err_code;
 457
 458         /* NT100x has a 8-bit register space */
 459         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 460         if (err_code < 0) {
 461                 dev_err(&usbvision->vdev.dev,
 462                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 463                                 __func__, err_code);
 464                 return err_code;
 465         }
 466         return 0;
 467 }
 468 #endif
 469
 470 static int vidioc_querycap(struct file *file, void  *priv,
 471                                         struct v4l2_capability *vc)
 472 {
 473         struct usb_usbvision *usbvision = video_drvdata(file);
 474         struct video_device *vdev = video_devdata(file);
 475
 476         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 477         strlcpy(vc->card,
 478                 usbvision_device_data[usbvision->dev_model].model_string,
 479                 sizeof(vc->card));
 480         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 481         vc->device_caps = usbvision->have_tuner ? V4L2_CAP_TUNER : 0;
 482         if (vdev->vfl_type == VFL_TYPE_GRABBER)
 483                 vc->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
 484                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 485         else
 486                 vc->device_caps |= V4L2_CAP_RADIO;
 487
 488         vc->capabilities = vc->device_caps | V4L2_CAP_VIDEO_CAPTURE |
 489                 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
 490         if (usbvision_device_data[usbvision->dev_model].radio)
 491                 vc->capabilities |= V4L2_CAP_RADIO;
 492         return 0;
 493 }
 494
 495 static int vidioc_enum_input(struct file *file, void *priv,
 496                                 struct v4l2_input *vi)
 497 {
 498         struct usb_usbvision *usbvision = video_drvdata(file);
 499         int chan;
 500
 501         if (vi->index >= usbvision->video_inputs)
 502                 return -EINVAL;
 503         if (usbvision->have_tuner)
 504                 chan = vi->index;
 505         else
 506                 chan = vi->index + 1; /* skip Television string*/
 507
 508         /* Determine the requested input characteristics
 509            specific for each usbvision card model */
 510         switch (chan) {
 511         case 0:
 512                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 513                         strcpy(vi->name, "White Video Input");
 514                 } else {
 515                         strcpy(vi->name, "Television");
 516                         vi->type = V4L2_INPUT_TYPE_TUNER;
 517                         vi->tuner = chan;
 518                         vi->std = USBVISION_NORMS;
 519                 }
 520                 break;
 521         case 1:
 522                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 523                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 524                         strcpy(vi->name, "Green Video Input");
 525                 else
 526                         strcpy(vi->name, "Composite Video Input");
 527                 vi->std = USBVISION_NORMS;
 528                 break;
 529         case 2:
 530                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 531                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 532                         strcpy(vi->name, "Yellow Video Input");
 533                 else
 534                         strcpy(vi->name, "S-Video Input");
 535                 vi->std = USBVISION_NORMS;
 536                 break;
 537         case 3:
 538                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 539                 strcpy(vi->name, "Red Video Input");
 540                 vi->std = USBVISION_NORMS;
 541                 break;
 542         }
 543         return 0;
 544 }
 545
 546 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 547 {
 548         struct usb_usbvision *usbvision = video_drvdata(file);
 549
 550         *input = usbvision->ctl_input;
 551         return 0;
 552 }
 553
 554 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 555 {
 556         struct usb_usbvision *usbvision = video_drvdata(file);
 557
 558         if (input >= usbvision->video_inputs)
 559                 return -EINVAL;
 560
 561         usbvision_muxsel(usbvision, input);
 562         usbvision_set_input(usbvision);
 563         usbvision_set_output(usbvision,
 564                              usbvision->curwidth,
 565                              usbvision->curheight);
 566         return 0;
 567 }
 568
 569 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
 570 {
 571         struct usb_usbvision *usbvision = video_drvdata(file);
 572
 573         usbvision->tvnorm_id = id;
 574
 575         call_all(usbvision, video, s_std, usbvision->tvnorm_id);
 576         /* propagate the change to the decoder */
 577         usbvision_muxsel(usbvision, usbvision->ctl_input);
 578
 579         return 0;
 580 }
 581
 582 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 583 {
 584         struct usb_usbvision *usbvision = video_drvdata(file);
 585
 586         *id = usbvision->tvnorm_id;
 587         return 0;
 588 }
 589
 590 static int vidioc_g_tuner(struct file *file, void *priv,
 591                                 struct v4l2_tuner *vt)
 592 {
 593         struct usb_usbvision *usbvision = video_drvdata(file);
 594
 595         if (vt->index)  /* Only tuner 0 */
 596                 return -EINVAL;
 597         if (vt->type == V4L2_TUNER_RADIO)
 598                 strcpy(vt->name, "Radio");
 599         else
 600                 strcpy(vt->name, "Television");
 601
 602         /* Let clients fill in the remainder of this struct */
 603         call_all(usbvision, tuner, g_tuner, vt);
 604
 605         return 0;
 606 }
 607
 608 static int vidioc_s_tuner(struct file *file, void *priv,
 609                                 const struct v4l2_tuner *vt)
 610 {
 611         struct usb_usbvision *usbvision = video_drvdata(file);
 612
 613         /* Only one tuner for now */
 614         if (vt->index)
 615                 return -EINVAL;
 616         /* let clients handle this */
 617         call_all(usbvision, tuner, s_tuner, vt);
 618
 619         return 0;
 620 }
 621
 622 static int vidioc_g_frequency(struct file *file, void *priv,
 623                                 struct v4l2_frequency *freq)
 624 {
 625         struct usb_usbvision *usbvision = video_drvdata(file);
 626
 627         /* Only one tuner */
 628         if (freq->tuner)
 629                 return -EINVAL;
 630         if (freq->type == V4L2_TUNER_RADIO)
 631                 freq->frequency = usbvision->radio_freq;
 632         else
 633                 freq->frequency = usbvision->tv_freq;
 634
 635         return 0;
 636 }
 637
 638 static int vidioc_s_frequency(struct file *file, void *priv,
 639                                 const struct v4l2_frequency *freq)
 640 {
 641         struct usb_usbvision *usbvision = video_drvdata(file);
 642         struct v4l2_frequency new_freq = *freq;
 643
 644         /* Only one tuner for now */
 645         if (freq->tuner)
 646                 return -EINVAL;
 647
 648         call_all(usbvision, tuner, s_frequency, freq);
 649         call_all(usbvision, tuner, g_frequency, &new_freq);
 650         if (freq->type == V4L2_TUNER_RADIO)
 651                 usbvision->radio_freq = new_freq.frequency;
 652         else
 653                 usbvision->tv_freq = new_freq.frequency;
 654
 655         return 0;
 656 }
 657
 658 static int vidioc_reqbufs(struct file *file,
 659                            void *priv, struct v4l2_requestbuffers *vr)
 660 {
 661         struct usb_usbvision *usbvision = video_drvdata(file);
 662         int ret;
 663
 664         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 665
 666         /* Check input validity:
 667            the user must do a VIDEO CAPTURE and MMAP method. */
 668         if (vr->memory != V4L2_MEMORY_MMAP)
 669                 return -EINVAL;
 670
 671         if (usbvision->streaming == stream_on) {
 672                 ret = usbvision_stream_interrupt(usbvision);
 673                 if (ret)
 674                         return ret;
 675         }
 676
 677         usbvision_frames_free(usbvision);
 678         usbvision_empty_framequeues(usbvision);
 679         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 680
 681         usbvision->cur_frame = NULL;
 682
 683         return 0;
 684 }
 685
 686 static int vidioc_querybuf(struct file *file,
 687                             void *priv, struct v4l2_buffer *vb)
 688 {
 689         struct usb_usbvision *usbvision = video_drvdata(file);
 690         struct usbvision_frame *frame;
 691
 692         /* FIXME : must control
 693            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 694         if (vb->index >= usbvision->num_frames)
 695                 return -EINVAL;
 696         /* Updating the corresponding frame state */
 697         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 698         frame = &usbvision->frame[vb->index];
 699         if (frame->grabstate >= frame_state_ready)
 700                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 701         if (frame->grabstate >= frame_state_done)
 702                 vb->flags |= V4L2_BUF_FLAG_DONE;
 703         if (frame->grabstate == frame_state_unused)
 704                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 705         vb->memory = V4L2_MEMORY_MMAP;
 706
 707         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 708
 709         vb->memory = V4L2_MEMORY_MMAP;
 710         vb->field = V4L2_FIELD_NONE;
 711         vb->length = usbvision->curwidth *
 712                 usbvision->curheight *
 713                 usbvision->palette.bytes_per_pixel;
 714         vb->timestamp = usbvision->frame[vb->index].timestamp;
 715         vb->sequence = usbvision->frame[vb->index].sequence;
 716         return 0;
 717 }
 718
 719 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 720 {
 721         struct usb_usbvision *usbvision = video_drvdata(file);
 722         struct usbvision_frame *frame;
 723         unsigned long lock_flags;
 724
 725         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 726         if (vb->index >= usbvision->num_frames)
 727                 return -EINVAL;
 728
 729         frame = &usbvision->frame[vb->index];
 730
 731         if (frame->grabstate != frame_state_unused)
 732                 return -EAGAIN;
 733
 734         /* Mark it as ready and enqueue frame */
 735         frame->grabstate = frame_state_ready;
 736         frame->scanstate = scan_state_scanning;
 737         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 738
 739         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 740
 741         /* set v4l2_format index */
 742         frame->v4l2_format = usbvision->palette;
 743
 744         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 745         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 746         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 747
 748         return 0;
 749 }
 750
 751 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 752 {
 753         struct usb_usbvision *usbvision = video_drvdata(file);
 754         int ret;
 755         struct usbvision_frame *f;
 756         unsigned long lock_flags;
 757
 758         if (list_empty(&(usbvision->outqueue))) {
 759                 if (usbvision->streaming == stream_idle)
 760                         return -EINVAL;
 761                 ret = wait_event_interruptible
 762                         (usbvision->wait_frame,
 763                          !list_empty(&(usbvision->outqueue)));
 764                 if (ret)
 765                         return ret;
 766         }
 767
 768         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 769         f = list_entry(usbvision->outqueue.next,
 770                        struct usbvision_frame, frame);
 771         list_del(usbvision->outqueue.next);
 772         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 773
 774         f->grabstate = frame_state_unused;
 775
 776         vb->memory = V4L2_MEMORY_MMAP;
 777         vb->flags = V4L2_BUF_FLAG_MAPPED |
 778                 V4L2_BUF_FLAG_QUEUED |
 779                 V4L2_BUF_FLAG_DONE |
 780                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 781         vb->index = f->index;
 782         vb->sequence = f->sequence;
 783         vb->timestamp = f->timestamp;
 784         vb->field = V4L2_FIELD_NONE;
 785         vb->bytesused = f->scanlength;
 786
 787         return 0;
 788 }
 789
 790 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 791 {
 792         struct usb_usbvision *usbvision = video_drvdata(file);
 793
 794         usbvision->streaming = stream_on;
 795         call_all(usbvision, video, s_stream, 1);
 796
 797         return 0;
 798 }
 799
 800 static int vidioc_streamoff(struct file *file,
 801                             void *priv, enum v4l2_buf_type type)
 802 {
 803         struct usb_usbvision *usbvision = video_drvdata(file);
 804
 805         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 806                 return -EINVAL;
 807
 808         if (usbvision->streaming == stream_on) {
 809                 usbvision_stream_interrupt(usbvision);
 810                 /* Stop all video streamings */
 811                 call_all(usbvision, video, s_stream, 0);
 812         }
 813         usbvision_empty_framequeues(usbvision);
 814
 815         return 0;
 816 }
 817
 818 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 819                                         struct v4l2_fmtdesc *vfd)
 820 {
 821         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 822                 return -EINVAL;
 823         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 824         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 825         return 0;
 826 }
 827
 828 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 829                                         struct v4l2_format *vf)
 830 {
 831         struct usb_usbvision *usbvision = video_drvdata(file);
 832         vf->fmt.pix.width = usbvision->curwidth;
 833         vf->fmt.pix.height = usbvision->curheight;
 834         vf->fmt.pix.pixelformat = usbvision->palette.format;
 835         vf->fmt.pix.bytesperline =
 836                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 837         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 838         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 839         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 840
 841         return 0;
 842 }
 843
 844 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 845                                struct v4l2_format *vf)
 846 {
 847         struct usb_usbvision *usbvision = video_drvdata(file);
 848         int format_idx;
 849
 850         /* Find requested format in available ones */
 851         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 852                 if (vf->fmt.pix.pixelformat ==
 853                    usbvision_v4l2_format[format_idx].format) {
 854                         usbvision->palette = usbvision_v4l2_format[format_idx];
 855                         break;
 856                 }
 857         }
 858         /* robustness */
 859         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 860                 return -EINVAL;
 861         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 862         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 863
 864         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 865                 usbvision->palette.bytes_per_pixel;
 866         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 867         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 868         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 869
 870         return 0;
 871 }
 872
 873 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 874                                struct v4l2_format *vf)
 875 {
 876         struct usb_usbvision *usbvision = video_drvdata(file);
 877         int ret;
 878
 879         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 880         if (ret)
 881                 return ret;
 882
 883         /* stop io in case it is already in progress */
 884         if (usbvision->streaming == stream_on) {
 885                 ret = usbvision_stream_interrupt(usbvision);
 886                 if (ret)
 887                         return ret;
 888         }
 889         usbvision_frames_free(usbvision);
 890         usbvision_empty_framequeues(usbvision);
 891
 892         usbvision->cur_frame = NULL;
 893
 894         /* by now we are committed to the new data... */
 895         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 896
 897         return 0;
 898 }
 899
 900 static ssize_t usbvision_read(struct file *file, char __user *buf,
 901                       size_t count, loff_t *ppos)
 902 {
 903         struct usb_usbvision *usbvision = video_drvdata(file);
 904         int noblock = file->f_flags & O_NONBLOCK;
 905         unsigned long lock_flags;
 906         int ret, i;
 907         struct usbvision_frame *frame;
 908
 909         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 910                (unsigned long)count, noblock);
 911
 912         if (!USBVISION_IS_OPERATIONAL(usbvision) || !buf)
 913                 return -EFAULT;
 914
 915         /* This entry point is compatible with the mmap routines
 916            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 917            to get frames or call read on the device. */
 918         if (!usbvision->num_frames) {
 919                 /* First, allocate some frames to work with
 920                    if this has not been done with VIDIOC_REQBUF */
 921                 usbvision_frames_free(usbvision);
 922                 usbvision_empty_framequeues(usbvision);
 923                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 924         }
 925
 926         if (usbvision->streaming != stream_on) {
 927                 /* no stream is running, make it running ! */
 928                 usbvision->streaming = stream_on;
 929                 call_all(usbvision, video, s_stream, 1);
 930         }
 931
 932         /* Then, enqueue as many frames as possible
 933            (like a user of VIDIOC_QBUF would do) */
 934         for (i = 0; i < usbvision->num_frames; i++) {
 935                 frame = &usbvision->frame[i];
 936                 if (frame->grabstate == frame_state_unused) {
 937                         /* Mark it as ready and enqueue frame */
 938                         frame->grabstate = frame_state_ready;
 939                         frame->scanstate = scan_state_scanning;
 940                         /* Accumulated in usbvision_parse_data() */
 941                         frame->scanlength = 0;
 942
 943                         /* set v4l2_format index */
 944                         frame->v4l2_format = usbvision->palette;
 945
 946                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 947                         list_add_tail(&frame->frame, &usbvision->inqueue);
 948                         spin_unlock_irqrestore(&usbvision->queue_lock,
 949                                                lock_flags);
 950                 }
 951         }
 952
 953         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
 954         if (list_empty(&(usbvision->outqueue))) {
 955                 if (noblock)
 956                         return -EAGAIN;
 957
 958                 ret = wait_event_interruptible
 959                         (usbvision->wait_frame,
 960                          !list_empty(&(usbvision->outqueue)));
 961                 if (ret)
 962                         return ret;
 963         }
 964
 965         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 966         frame = list_entry(usbvision->outqueue.next,
 967                            struct usbvision_frame, frame);
 968         list_del(usbvision->outqueue.next);
 969         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 970
 971         /* An error returns an empty frame */
 972         if (frame->grabstate == frame_state_error) {
 973                 frame->bytes_read = 0;
 974                 return 0;
 975         }
 976
 977         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
 978                __func__,
 979                frame->index, frame->bytes_read, frame->scanlength);
 980
 981         /* copy bytes to user space; we allow for partials reads */
 982         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
 983                 count = frame->scanlength - frame->bytes_read;
 984
 985         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
 986                 return -EFAULT;
 987
 988         frame->bytes_read += count;
 989         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
 990                __func__,
 991                (unsigned long)count, frame->bytes_read);
 992
 993 #if 1
 994         /*
 995          * FIXME:
 996          * For now, forget the frame if it has not been read in one shot.
 997          */
 998         frame->bytes_read = 0;
 999
1000         /* Mark it as available to be used again. */
1001         frame->grabstate = frame_state_unused;
1002 #else
1003         if (frame->bytes_read >= frame->scanlength) {
1004                 /* All data has been read */
1005                 frame->bytes_read = 0;
1006
1007                 /* Mark it as available to be used again. */
1008                 frame->grabstate = frame_state_unused;
1009         }
1010 #endif
1011
1012         return count;
1013 }
1014
1015 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1016                       size_t count, loff_t *ppos)
1017 {
1018         struct usb_usbvision *usbvision = video_drvdata(file);
1019         int res;
1020
1021         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1022                 return -ERESTARTSYS;
1023         res = usbvision_read(file, buf, count, ppos);
1024         mutex_unlock(&usbvision->v4l2_lock);
1025         return res;
1026 }
1027
1028 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1029 {
1030         unsigned long size = vma->vm_end - vma->vm_start,
1031                 start = vma->vm_start;
1032         void *pos;
1033         u32 i;
1034         struct usb_usbvision *usbvision = video_drvdata(file);
1035
1036         PDEBUG(DBG_MMAP, "mmap");
1037
1038         if (!USBVISION_IS_OPERATIONAL(usbvision))
1039                 return -EFAULT;
1040
1041         if (!(vma->vm_flags & VM_WRITE) ||
1042             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1043                 return -EINVAL;
1044         }
1045
1046         for (i = 0; i < usbvision->num_frames; i++) {
1047                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1048                     vma->vm_pgoff)
1049                         break;
1050         }
1051         if (i == usbvision->num_frames) {
1052                 PDEBUG(DBG_MMAP,
1053                        "mmap: user supplied mapping address is out of range");
1054                 return -EINVAL;
1055         }
1056
1057         /* VM_IO is eventually going to replace PageReserved altogether */
1058         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1059
1060         pos = usbvision->frame[i].data;
1061         while (size > 0) {
1062                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1063                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1064                         return -EAGAIN;
1065                 }
1066                 start += PAGE_SIZE;
1067                 pos += PAGE_SIZE;
1068                 size -= PAGE_SIZE;
1069         }
1070
1071         return 0;
1072 }
1073
1074 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1075 {
1076         struct usb_usbvision *usbvision = video_drvdata(file);
1077         int res;
1078
1079         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1080                 return -ERESTARTSYS;
1081         res = usbvision_mmap(file, vma);
1082         mutex_unlock(&usbvision->v4l2_lock);
1083         return res;
1084 }
1085
1086 /*
1087  * Here comes the stuff for radio on usbvision based devices
1088  *
1089  */
1090 static int usbvision_radio_open(struct file *file)
1091 {
1092         struct usb_usbvision *usbvision = video_drvdata(file);
1093         int err_code = 0;
1094
1095         PDEBUG(DBG_IO, "%s:", __func__);
1096
1097         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1098                 return -ERESTARTSYS;
1099
1100         if (usbvision->remove_pending) {
1101                 err_code = -ENODEV;
1102                 goto out;
1103         }
1104         err_code = v4l2_fh_open(file);
1105         if (err_code)
1106                 goto out;
1107         if (usbvision->user) {
1108                 dev_err(&usbvision->rdev.dev,
1109                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1110                                 __func__);
1111                 err_code = -EBUSY;
1112         } else {
1113                 /* Alternate interface 1 is is the biggest frame size */
1114                 err_code = usbvision_set_alternate(usbvision);
1115                 if (err_code < 0) {
1116                         usbvision->last_error = err_code;
1117                         err_code = -EBUSY;
1118                         goto out;
1119                 }
1120
1121                 /* If so far no errors then we shall start the radio */
1122                 usbvision->radio = 1;
1123                 call_all(usbvision, tuner, s_radio);
1124                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1125                 usbvision->user++;
1126         }
1127 out:
1128         mutex_unlock(&usbvision->v4l2_lock);
1129         return err_code;
1130 }
1131
1132
1133 static int usbvision_radio_close(struct file *file)
1134 {
1135         struct usb_usbvision *usbvision = video_drvdata(file);
1136         int r;
1137
1138         PDEBUG(DBG_IO, "");
1139
1140         mutex_lock(&usbvision->v4l2_lock);
1141         /* Set packet size to 0 */
1142         usbvision->iface_alt = 0;
1143         usb_set_interface(usbvision->dev, usbvision->iface,
1144                                     usbvision->iface_alt);
1145
1146         usbvision_audio_off(usbvision);
1147         usbvision->radio = 0;
1148         usbvision->user--;
1149         r = usbvision->remove_pending;
1150         mutex_unlock(&usbvision->v4l2_lock);
1151
1152         if (r) {
1153                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1154                 v4l2_fh_release(file);
1155                 usbvision_release(usbvision);
1156                 return 0;
1157         }
1158
1159         PDEBUG(DBG_IO, "success");
1160         return v4l2_fh_release(file);
1161 }
1162
1163 /* Video registration stuff */
1164
1165 /* Video template */
1166 static const struct v4l2_file_operations usbvision_fops = {
1167         .owner             = THIS_MODULE,
1168         .open           = usbvision_v4l2_open,
1169         .release        = usbvision_v4l2_close,
1170         .read           = usbvision_v4l2_read,
1171         .mmap           = usbvision_v4l2_mmap,
1172         .unlocked_ioctl = video_ioctl2,
1173 };
1174
1175 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1176         .vidioc_querycap      = vidioc_querycap,
1177         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1178         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1179         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1180         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1181         .vidioc_reqbufs       = vidioc_reqbufs,
1182         .vidioc_querybuf      = vidioc_querybuf,
1183         .vidioc_qbuf          = vidioc_qbuf,
1184         .vidioc_dqbuf         = vidioc_dqbuf,
1185         .vidioc_s_std         = vidioc_s_std,
1186         .vidioc_g_std         = vidioc_g_std,
1187         .vidioc_enum_input    = vidioc_enum_input,
1188         .vidioc_g_input       = vidioc_g_input,
1189         .vidioc_s_input       = vidioc_s_input,
1190         .vidioc_streamon      = vidioc_streamon,
1191         .vidioc_streamoff     = vidioc_streamoff,
1192         .vidioc_g_tuner       = vidioc_g_tuner,
1193         .vidioc_s_tuner       = vidioc_s_tuner,
1194         .vidioc_g_frequency   = vidioc_g_frequency,
1195         .vidioc_s_frequency   = vidioc_s_frequency,
1196         .vidioc_log_status    = v4l2_ctrl_log_status,
1197         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1198         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1199 #ifdef CONFIG_VIDEO_ADV_DEBUG
1200         .vidioc_g_register    = vidioc_g_register,
1201         .vidioc_s_register    = vidioc_s_register,
1202 #endif
1203 };
1204
1205 static struct video_device usbvision_video_template = {
1206         .fops           = &usbvision_fops,
1207         .ioctl_ops      = &usbvision_ioctl_ops,
1208         .name           = "usbvision-video",
1209         .release        = video_device_release_empty,
1210         .tvnorms        = USBVISION_NORMS,
1211 };
1212
1213
1214 /* Radio template */
1215 static const struct v4l2_file_operations usbvision_radio_fops = {
1216         .owner             = THIS_MODULE,
1217         .open           = usbvision_radio_open,
1218         .release        = usbvision_radio_close,
1219         .poll           = v4l2_ctrl_poll,
1220         .unlocked_ioctl = video_ioctl2,
1221 };
1222
1223 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1224         .vidioc_querycap      = vidioc_querycap,
1225         .vidioc_g_tuner       = vidioc_g_tuner,
1226         .vidioc_s_tuner       = vidioc_s_tuner,
1227         .vidioc_g_frequency   = vidioc_g_frequency,
1228         .vidioc_s_frequency   = vidioc_s_frequency,
1229         .vidioc_log_status    = v4l2_ctrl_log_status,
1230         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1231         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1232 };
1233
1234 static struct video_device usbvision_radio_template = {
1235         .fops           = &usbvision_radio_fops,
1236         .name           = "usbvision-radio",
1237         .release        = video_device_release_empty,
1238         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1239 };
1240
1241
1242 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1243                                 struct video_device *vdev,
1244                                 const struct video_device *vdev_template,
1245                                 const char *name)
1246 {
1247         struct usb_device *usb_dev = usbvision->dev;
1248
1249         if (!usb_dev) {
1250                 dev_err(&usbvision->dev->dev,
1251                         "%s: usbvision->dev is not set\n", __func__);
1252                 return;
1253         }
1254
1255         *vdev = *vdev_template;
1256         vdev->lock = &usbvision->v4l2_lock;
1257         vdev->v4l2_dev = &usbvision->v4l2_dev;
1258         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1259         video_set_drvdata(vdev, usbvision);
1260 }
1261
1262 /* unregister video4linux devices */
1263 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1264 {
1265         /* Radio Device: */
1266         if (video_is_registered(&usbvision->rdev)) {
1267                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1268                        video_device_node_name(&usbvision->rdev));
1269                 video_unregister_device(&usbvision->rdev);
1270         }
1271
1272         /* Video Device: */
1273         if (video_is_registered(&usbvision->vdev)) {
1274                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1275                        video_device_node_name(&usbvision->vdev));
1276                 video_unregister_device(&usbvision->vdev);
1277         }
1278 }
1279
1280 /* register video4linux devices */
1281 static int usbvision_register_video(struct usb_usbvision *usbvision)
1282 {
1283         int res = -ENOMEM;
1284
1285         /* Video Device: */
1286         usbvision_vdev_init(usbvision, &usbvision->vdev,
1287                               &usbvision_video_template, "USBVision Video");
1288         if (!usbvision->have_tuner) {
1289                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1290                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1291                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1292                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1293         }
1294         if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1295                 goto err_exit;
1296         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1297                usbvision->nr, video_device_node_name(&usbvision->vdev));
1298
1299         /* Radio Device: */
1300         if (usbvision_device_data[usbvision->dev_model].radio) {
1301                 /* usbvision has radio */
1302                 usbvision_vdev_init(usbvision, &usbvision->rdev,
1303                               &usbvision_radio_template, "USBVision Radio");
1304                 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1305                         goto err_exit;
1306                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1307                        usbvision->nr, video_device_node_name(&usbvision->rdev));
1308         }
1309         /* all done */
1310         return 0;
1311
1312  err_exit:
1313         dev_err(&usbvision->dev->dev,
1314                 "USBVision[%d]: video_register_device() failed\n",
1315                         usbvision->nr);
1316         usbvision_unregister_video(usbvision);
1317         return res;
1318 }
1319
1320 /*
1321  * usbvision_alloc()
1322  *
1323  * This code allocates the struct usb_usbvision.
1324  * It is filled with default values.
1325  *
1326  * Returns NULL on error, a pointer to usb_usbvision else.
1327  *
1328  */
1329 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1330                                              struct usb_interface *intf)
1331 {
1332         struct usb_usbvision *usbvision;
1333
1334         usbvision = kzalloc(sizeof(*usbvision), GFP_KERNEL);
1335         if (!usbvision)
1336                 return NULL;
1337
1338         usbvision->dev = dev;
1339         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1340                 goto err_free;
1341
1342         if (v4l2_ctrl_handler_init(&usbvision->hdl, 4))
1343                 goto err_unreg;
1344         usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl;
1345         mutex_init(&usbvision->v4l2_lock);
1346
1347         /* prepare control urb for control messages during interrupts */
1348         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1349         if (!usbvision->ctrl_urb)
1350                 goto err_unreg;
1351
1352         return usbvision;
1353
1354 err_unreg:
1355         v4l2_ctrl_handler_free(&usbvision->hdl);
1356         v4l2_device_unregister(&usbvision->v4l2_dev);
1357 err_free:
1358         kfree(usbvision);
1359         return NULL;
1360 }
1361
1362 /*
1363  * usbvision_release()
1364  *
1365  * This code does final release of struct usb_usbvision. This happens
1366  * after the device is disconnected -and- all clients closed their files.
1367  *
1368  */
1369 static void usbvision_release(struct usb_usbvision *usbvision)
1370 {
1371         PDEBUG(DBG_PROBE, "");
1372
1373         usbvision->initialized = 0;
1374
1375         usbvision_remove_sysfs(&usbvision->vdev);
1376         usbvision_unregister_video(usbvision);
1377         kfree(usbvision->alt_max_pkt_size);
1378
1379         usb_free_urb(usbvision->ctrl_urb);
1380
1381         v4l2_ctrl_handler_free(&usbvision->hdl);
1382         v4l2_device_unregister(&usbvision->v4l2_dev);
1383         kfree(usbvision);
1384
1385         PDEBUG(DBG_PROBE, "success");
1386 }
1387
1388
1389 /*********************** usb interface **********************************/
1390
1391 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1392 {
1393         int model;
1394
1395         if (!usbvision)
1396                 return;
1397
1398         model = usbvision->dev_model;
1399         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1400
1401         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1402                 usbvision->vin_reg2_preset =
1403                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1404         } else {
1405                 usbvision->vin_reg2_preset = 0;
1406         }
1407
1408         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1409         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1410         usbvision->ctl_input = 0;
1411         usbvision->radio_freq = 87.5 * 16000;
1412         usbvision->tv_freq = 400 * 16;
1413
1414         /* This should be here to make i2c clients to be able to register */
1415         /* first switch off audio */
1416         if (usbvision_device_data[model].audio_channels > 0)
1417                 usbvision_audio_off(usbvision);
1418         /* and then power up the tuner */
1419         usbvision_power_on(usbvision);
1420         usbvision_i2c_register(usbvision);
1421 }
1422
1423 /*
1424  * usbvision_probe()
1425  *
1426  * This procedure queries device descriptor and accepts the interface
1427  * if it looks like USBVISION video device
1428  *
1429  */
1430 static int usbvision_probe(struct usb_interface *intf,
1431                            const struct usb_device_id *devid)
1432 {
1433         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1434         struct usb_interface *uif;
1435         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1436         const struct usb_host_interface *interface;
1437         struct usb_usbvision *usbvision = NULL;
1438         const struct usb_endpoint_descriptor *endpoint;
1439         int model, i, ret;
1440
1441         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1442                                 le16_to_cpu(dev->descriptor.idVendor),
1443                                 le16_to_cpu(dev->descriptor.idProduct), ifnum);
1444
1445         model = devid->driver_info;
1446         if (model < 0 || model >= usbvision_device_data_size) {
1447                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1448                 ret = -ENODEV;
1449                 goto err_usb;
1450         }
1451         printk(KERN_INFO "%s: %s found\n", __func__,
1452                                 usbvision_device_data[model].model_string);
1453
1454         if (usbvision_device_data[model].interface >= 0)
1455                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1456         else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1457                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1458         else {
1459                 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1460                     ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1461                 ret = -ENODEV;
1462                 goto err_usb;
1463         }
1464
1465         if (interface->desc.bNumEndpoints < 2) {
1466                 dev_err(&intf->dev, "interface %d has %d endpoints, but must have minimum 2\n",
1467                         ifnum, interface->desc.bNumEndpoints);
1468                 ret = -ENODEV;
1469                 goto err_usb;
1470         }
1471         endpoint = &interface->endpoint[1].desc;
1472
1473         if (!usb_endpoint_xfer_isoc(endpoint)) {
1474                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1475                     __func__, ifnum);
1476                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1477                     __func__, endpoint->bmAttributes);
1478                 ret = -ENODEV;
1479                 goto err_usb;
1480         }
1481         if (usb_endpoint_dir_out(endpoint)) {
1482                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1483                     __func__, ifnum);
1484                 ret = -ENODEV;
1485                 goto err_usb;
1486         }
1487
1488         usbvision = usbvision_alloc(dev, intf);
1489         if (!usbvision) {
1490                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1491                 ret = -ENOMEM;
1492                 goto err_usb;
1493         }
1494
1495         if (dev->descriptor.bNumConfigurations > 1)
1496                 usbvision->bridge_type = BRIDGE_NT1004;
1497         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1498                 usbvision->bridge_type = BRIDGE_NT1005;
1499         else
1500                 usbvision->bridge_type = BRIDGE_NT1003;
1501         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1502
1503         /* compute alternate max packet sizes */
1504         uif = dev->actconfig->interface[0];
1505
1506         usbvision->num_alt = uif->num_altsetting;
1507         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1508         usbvision->alt_max_pkt_size = kmalloc_array(32, usbvision->num_alt,
1509                                                     GFP_KERNEL);
1510         if (!usbvision->alt_max_pkt_size) {
1511                 ret = -ENOMEM;
1512                 goto err_pkt;
1513         }
1514
1515         for (i = 0; i < usbvision->num_alt; i++) {
1516                 u16 tmp;
1517
1518                 if (uif->altsetting[i].desc.bNumEndpoints < 2) {
1519                         ret = -ENODEV;
1520                         goto err_pkt;
1521                 }
1522
1523                 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1524                                       wMaxPacketSize);
1525                 usbvision->alt_max_pkt_size[i] =
1526                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1527                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1528                        usbvision->alt_max_pkt_size[i]);
1529         }
1530
1531
1532         usbvision->nr = usbvision_nr++;
1533
1534         spin_lock_init(&usbvision->queue_lock);
1535         init_waitqueue_head(&usbvision->wait_frame);
1536         init_waitqueue_head(&usbvision->wait_stream);
1537
1538         usbvision->have_tuner = usbvision_device_data[model].tuner;
1539         if (usbvision->have_tuner)
1540                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1541
1542         usbvision->dev_model = model;
1543         usbvision->remove_pending = 0;
1544         usbvision->iface = ifnum;
1545         usbvision->iface_alt = 0;
1546         usbvision->video_endp = endpoint->bEndpointAddress;
1547         usbvision->isoc_packet_size = 0;
1548         usbvision->usb_bandwidth = 0;
1549         usbvision->user = 0;
1550         usbvision->streaming = stream_off;
1551         usbvision_configure_video(usbvision);
1552         usbvision_register_video(usbvision);
1553
1554         usbvision_create_sysfs(&usbvision->vdev);
1555
1556         PDEBUG(DBG_PROBE, "success");
1557         return 0;
1558
1559 err_pkt:
1560         usbvision_release(usbvision);
1561 err_usb:
1562         usb_put_dev(dev);
1563         return ret;
1564 }
1565
1566
1567 /*
1568  * usbvision_disconnect()
1569  *
1570  * This procedure stops all driver activity, deallocates interface-private
1571  * structure (pointed by 'ptr') and after that driver should be removable
1572  * with no ill consequences.
1573  *
1574  */
1575 static void usbvision_disconnect(struct usb_interface *intf)
1576 {
1577         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1578         int u;
1579
1580         PDEBUG(DBG_PROBE, "");
1581
1582         if (!usbvision) {
1583                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1584                 return;
1585         }
1586
1587         mutex_lock(&usbvision->v4l2_lock);
1588
1589         /* At this time we ask to cancel outstanding URBs */
1590         usbvision_stop_isoc(usbvision);
1591
1592         v4l2_device_disconnect(&usbvision->v4l2_dev);
1593         usbvision_i2c_unregister(usbvision);
1594         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1595         u = usbvision->user;
1596
1597         usb_put_dev(usbvision->dev);
1598         usbvision->dev = NULL;  /* USB device is no more */
1599
1600         mutex_unlock(&usbvision->v4l2_lock);
1601
1602         if (u) {
1603                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1604                        __func__);
1605                 wake_up_interruptible(&usbvision->wait_frame);
1606                 wake_up_interruptible(&usbvision->wait_stream);
1607         } else {
1608                 usbvision_release(usbvision);
1609         }
1610
1611         PDEBUG(DBG_PROBE, "success");
1612 }
1613
1614 static struct usb_driver usbvision_driver = {
1615         .name           = "usbvision",
1616         .id_table       = usbvision_table,
1617         .probe          = usbvision_probe,
1618         .disconnect     = usbvision_disconnect,
1619 };
1620
1621 /*
1622  * usbvision_init()
1623  *
1624  * This code is run to initialize the driver.
1625  *
1626  */
1627 static int __init usbvision_init(void)
1628 {
1629         int err_code;
1630
1631         PDEBUG(DBG_PROBE, "");
1632
1633         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1634         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1635         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1636
1637         /* disable planar mode support unless compression enabled */
1638         if (isoc_mode != ISOC_MODE_COMPRESS) {
1639                 /* FIXME : not the right way to set supported flag */
1640                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1641                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1642         }
1643
1644         err_code = usb_register(&usbvision_driver);
1645
1646         if (err_code == 0) {
1647                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1648                 PDEBUG(DBG_PROBE, "success");
1649         }
1650         return err_code;
1651 }
1652
1653 static void __exit usbvision_exit(void)
1654 {
1655         PDEBUG(DBG_PROBE, "");
1656
1657         usb_deregister(&usbvision_driver);
1658         PDEBUG(DBG_PROBE, "success");
1659 }
1660
1661 module_init(usbvision_init);
1662 module_exit(usbvision_exit);