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/i2c/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 = to_video_device(cd);
 166         return video_get_drvdata(vdev);
 167 }
 168
 169 static ssize_t show_version(struct device *cd,
 170                             struct device_attribute *attr, char *buf)
 171 {
 172         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 173 }
 174 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 175
 176 static ssize_t show_model(struct device *cd,
 177                           struct device_attribute *attr, char *buf)
 178 {
 179         struct video_device *vdev = to_video_device(cd);
 180         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 181         return sprintf(buf, "%s\n",
 182                        usbvision_device_data[usbvision->dev_model].model_string);
 183 }
 184 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 185
 186 static ssize_t show_hue(struct device *cd,
 187                         struct device_attribute *attr, char *buf)
 188 {
 189         struct video_device *vdev = to_video_device(cd);
 190         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 191         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 192                                                   V4L2_CID_HUE));
 193
 194         return sprintf(buf, "%d\n", val);
 195 }
 196 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 197
 198 static ssize_t show_contrast(struct device *cd,
 199                              struct device_attribute *attr, char *buf)
 200 {
 201         struct video_device *vdev = to_video_device(cd);
 202         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 203         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 204                                                   V4L2_CID_CONTRAST));
 205
 206         return sprintf(buf, "%d\n", val);
 207 }
 208 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 209
 210 static ssize_t show_brightness(struct device *cd,
 211                                struct device_attribute *attr, char *buf)
 212 {
 213         struct video_device *vdev = to_video_device(cd);
 214         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 215         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 216                                                   V4L2_CID_BRIGHTNESS));
 217
 218         return sprintf(buf, "%d\n", val);
 219 }
 220 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 221
 222 static ssize_t show_saturation(struct device *cd,
 223                                struct device_attribute *attr, char *buf)
 224 {
 225         struct video_device *vdev = to_video_device(cd);
 226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 227         s32 val = v4l2_ctrl_g_ctrl(v4l2_ctrl_find(&usbvision->hdl,
 228                                                   V4L2_CID_SATURATION));
 229
 230         return sprintf(buf, "%d\n", val);
 231 }
 232 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 233
 234 static ssize_t show_streaming(struct device *cd,
 235                               struct device_attribute *attr, char *buf)
 236 {
 237         struct video_device *vdev = to_video_device(cd);
 238         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 239         return sprintf(buf, "%s\n",
 240                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 241 }
 242 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 243
 244 static ssize_t show_compression(struct device *cd,
 245                                 struct device_attribute *attr, char *buf)
 246 {
 247         struct video_device *vdev = to_video_device(cd);
 248         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 249         return sprintf(buf, "%s\n",
 250                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 251 }
 252 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 253
 254 static ssize_t show_device_bridge(struct device *cd,
 255                                   struct device_attribute *attr, char *buf)
 256 {
 257         struct video_device *vdev = to_video_device(cd);
 258         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 259         return sprintf(buf, "%d\n", usbvision->bridge_type);
 260 }
 261 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 262
 263 static void usbvision_create_sysfs(struct video_device *vdev)
 264 {
 265         int res;
 266
 267         if (!vdev)
 268                 return;
 269         do {
 270                 res = device_create_file(&vdev->dev, &dev_attr_version);
 271                 if (res < 0)
 272                         break;
 273                 res = device_create_file(&vdev->dev, &dev_attr_model);
 274                 if (res < 0)
 275                         break;
 276                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 277                 if (res < 0)
 278                         break;
 279                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 280                 if (res < 0)
 281                         break;
 282                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 283                 if (res < 0)
 284                         break;
 285                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 286                 if (res < 0)
 287                         break;
 288                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 289                 if (res < 0)
 290                         break;
 291                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 292                 if (res < 0)
 293                         break;
 294                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 295                 if (res >= 0)
 296                         return;
 297         } while (0);
 298
 299         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 300 }
 301
 302 static void usbvision_remove_sysfs(struct video_device *vdev)
 303 {
 304         if (vdev) {
 305                 device_remove_file(&vdev->dev, &dev_attr_version);
 306                 device_remove_file(&vdev->dev, &dev_attr_model);
 307                 device_remove_file(&vdev->dev, &dev_attr_hue);
 308                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 309                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 310                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 311                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 312                 device_remove_file(&vdev->dev, &dev_attr_compression);
 313                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 314         }
 315 }
 316
 317 /*
 318  * usbvision_open()
 319  *
 320  * This is part of Video 4 Linux API. The driver can be opened by one
 321  * client only (checks internal counter 'usbvision->user'). The procedure
 322  * then allocates buffers needed for video processing.
 323  *
 324  */
 325 static int usbvision_v4l2_open(struct file *file)
 326 {
 327         struct usb_usbvision *usbvision = video_drvdata(file);
 328         int err_code = 0;
 329
 330         PDEBUG(DBG_IO, "open");
 331
 332         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
 333                 return -ERESTARTSYS;
 334
 335         if (usbvision->remove_pending) {
 336                 err_code = -ENODEV;
 337                 goto unlock;
 338         }
 339         if (usbvision->user) {
 340                 err_code = -EBUSY;
 341         } else {
 342                 err_code = v4l2_fh_open(file);
 343                 if (err_code)
 344                         goto unlock;
 345
 346                 /* Allocate memory for the scratch ring buffer */
 347                 err_code = usbvision_scratch_alloc(usbvision);
 348                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 349                         /* Allocate intermediate decompression buffers
 350                            only if needed */
 351                         err_code = usbvision_decompress_alloc(usbvision);
 352                 }
 353                 if (err_code) {
 354                         /* Deallocate all buffers if trouble */
 355                         usbvision_scratch_free(usbvision);
 356                         usbvision_decompress_free(usbvision);
 357                 }
 358         }
 359
 360         /* If so far no errors then we shall start the camera */
 361         if (!err_code) {
 362                 /* Send init sequence only once, it's large! */
 363                 if (!usbvision->initialized) {
 364                         int setup_ok = 0;
 365                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 366                         if (setup_ok)
 367                                 usbvision->initialized = 1;
 368                         else
 369                                 err_code = -EBUSY;
 370                 }
 371
 372                 if (!err_code) {
 373                         usbvision_begin_streaming(usbvision);
 374                         err_code = usbvision_init_isoc(usbvision);
 375                         /* device must be initialized before isoc transfer */
 376                         usbvision_muxsel(usbvision, 0);
 377
 378                         /* prepare queues */
 379                         usbvision_empty_framequeues(usbvision);
 380                         usbvision->user++;
 381                 }
 382         }
 383
 384 unlock:
 385         mutex_unlock(&usbvision->v4l2_lock);
 386
 387         PDEBUG(DBG_IO, "success");
 388         return err_code;
 389 }
 390
 391 /*
 392  * usbvision_v4l2_close()
 393  *
 394  * This is part of Video 4 Linux API. The procedure
 395  * stops streaming and deallocates all buffers that were earlier
 396  * allocated in usbvision_v4l2_open().
 397  *
 398  */
 399 static int usbvision_v4l2_close(struct file *file)
 400 {
 401         struct usb_usbvision *usbvision = video_drvdata(file);
 402         int r;
 403
 404         PDEBUG(DBG_IO, "close");
 405
 406         mutex_lock(&usbvision->v4l2_lock);
 407         usbvision_audio_off(usbvision);
 408         usbvision_restart_isoc(usbvision);
 409         usbvision_stop_isoc(usbvision);
 410
 411         usbvision_decompress_free(usbvision);
 412         usbvision_frames_free(usbvision);
 413         usbvision_empty_framequeues(usbvision);
 414         usbvision_scratch_free(usbvision);
 415
 416         usbvision->user--;
 417         r = usbvision->remove_pending;
 418         mutex_unlock(&usbvision->v4l2_lock);
 419
 420         if (r) {
 421                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 422                 usbvision_release(usbvision);
 423                 return 0;
 424         }
 425
 426         PDEBUG(DBG_IO, "success");
 427         return v4l2_fh_release(file);
 428 }
 429
 430
 431 /*
 432  * usbvision_ioctl()
 433  *
 434  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 435  *
 436  */
 437 #ifdef CONFIG_VIDEO_ADV_DEBUG
 438 static int vidioc_g_register(struct file *file, void *priv,
 439                                 struct v4l2_dbg_register *reg)
 440 {
 441         struct usb_usbvision *usbvision = video_drvdata(file);
 442         int err_code;
 443
 444         /* NT100x has a 8-bit register space */
 445         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 446         if (err_code < 0) {
 447                 dev_err(&usbvision->vdev.dev,
 448                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 449                                 __func__, err_code);
 450                 return err_code;
 451         }
 452         reg->val = err_code;
 453         reg->size = 1;
 454         return 0;
 455 }
 456
 457 static int vidioc_s_register(struct file *file, void *priv,
 458                                 const struct v4l2_dbg_register *reg)
 459 {
 460         struct usb_usbvision *usbvision = video_drvdata(file);
 461         int err_code;
 462
 463         /* NT100x has a 8-bit register space */
 464         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 465         if (err_code < 0) {
 466                 dev_err(&usbvision->vdev.dev,
 467                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 468                                 __func__, err_code);
 469                 return err_code;
 470         }
 471         return 0;
 472 }
 473 #endif
 474
 475 static int vidioc_querycap(struct file *file, void  *priv,
 476                                         struct v4l2_capability *vc)
 477 {
 478         struct usb_usbvision *usbvision = video_drvdata(file);
 479         struct video_device *vdev = video_devdata(file);
 480
 481         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 482         strlcpy(vc->card,
 483                 usbvision_device_data[usbvision->dev_model].model_string,
 484                 sizeof(vc->card));
 485         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 486         vc->device_caps = usbvision->have_tuner ? V4L2_CAP_TUNER : 0;
 487         if (vdev->vfl_type == VFL_TYPE_GRABBER)
 488                 vc->device_caps |= V4L2_CAP_VIDEO_CAPTURE |
 489                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 490         else
 491                 vc->device_caps |= V4L2_CAP_RADIO;
 492
 493         vc->capabilities = vc->device_caps | V4L2_CAP_VIDEO_CAPTURE |
 494                 V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
 495         if (usbvision_device_data[usbvision->dev_model].radio)
 496                 vc->capabilities |= V4L2_CAP_RADIO;
 497         return 0;
 498 }
 499
 500 static int vidioc_enum_input(struct file *file, void *priv,
 501                                 struct v4l2_input *vi)
 502 {
 503         struct usb_usbvision *usbvision = video_drvdata(file);
 504         int chan;
 505
 506         if (vi->index >= usbvision->video_inputs)
 507                 return -EINVAL;
 508         if (usbvision->have_tuner)
 509                 chan = vi->index;
 510         else
 511                 chan = vi->index + 1; /* skip Television string*/
 512
 513         /* Determine the requested input characteristics
 514            specific for each usbvision card model */
 515         switch (chan) {
 516         case 0:
 517                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 518                         strcpy(vi->name, "White Video Input");
 519                 } else {
 520                         strcpy(vi->name, "Television");
 521                         vi->type = V4L2_INPUT_TYPE_TUNER;
 522                         vi->tuner = chan;
 523                         vi->std = USBVISION_NORMS;
 524                 }
 525                 break;
 526         case 1:
 527                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 528                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 529                         strcpy(vi->name, "Green Video Input");
 530                 else
 531                         strcpy(vi->name, "Composite Video Input");
 532                 vi->std = USBVISION_NORMS;
 533                 break;
 534         case 2:
 535                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 536                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 537                         strcpy(vi->name, "Yellow Video Input");
 538                 else
 539                         strcpy(vi->name, "S-Video Input");
 540                 vi->std = USBVISION_NORMS;
 541                 break;
 542         case 3:
 543                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 544                 strcpy(vi->name, "Red Video Input");
 545                 vi->std = USBVISION_NORMS;
 546                 break;
 547         }
 548         return 0;
 549 }
 550
 551 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 552 {
 553         struct usb_usbvision *usbvision = video_drvdata(file);
 554
 555         *input = usbvision->ctl_input;
 556         return 0;
 557 }
 558
 559 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 560 {
 561         struct usb_usbvision *usbvision = video_drvdata(file);
 562
 563         if (input >= usbvision->video_inputs)
 564                 return -EINVAL;
 565
 566         usbvision_muxsel(usbvision, input);
 567         usbvision_set_input(usbvision);
 568         usbvision_set_output(usbvision,
 569                              usbvision->curwidth,
 570                              usbvision->curheight);
 571         return 0;
 572 }
 573
 574 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
 575 {
 576         struct usb_usbvision *usbvision = video_drvdata(file);
 577
 578         usbvision->tvnorm_id = id;
 579
 580         call_all(usbvision, video, s_std, usbvision->tvnorm_id);
 581         /* propagate the change to the decoder */
 582         usbvision_muxsel(usbvision, usbvision->ctl_input);
 583
 584         return 0;
 585 }
 586
 587 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 588 {
 589         struct usb_usbvision *usbvision = video_drvdata(file);
 590
 591         *id = usbvision->tvnorm_id;
 592         return 0;
 593 }
 594
 595 static int vidioc_g_tuner(struct file *file, void *priv,
 596                                 struct v4l2_tuner *vt)
 597 {
 598         struct usb_usbvision *usbvision = video_drvdata(file);
 599
 600         if (vt->index)  /* Only tuner 0 */
 601                 return -EINVAL;
 602         if (vt->type == V4L2_TUNER_RADIO)
 603                 strcpy(vt->name, "Radio");
 604         else
 605                 strcpy(vt->name, "Television");
 606
 607         /* Let clients fill in the remainder of this struct */
 608         call_all(usbvision, tuner, g_tuner, vt);
 609
 610         return 0;
 611 }
 612
 613 static int vidioc_s_tuner(struct file *file, void *priv,
 614                                 const struct v4l2_tuner *vt)
 615 {
 616         struct usb_usbvision *usbvision = video_drvdata(file);
 617
 618         /* Only one tuner for now */
 619         if (vt->index)
 620                 return -EINVAL;
 621         /* let clients handle this */
 622         call_all(usbvision, tuner, s_tuner, vt);
 623
 624         return 0;
 625 }
 626
 627 static int vidioc_g_frequency(struct file *file, void *priv,
 628                                 struct v4l2_frequency *freq)
 629 {
 630         struct usb_usbvision *usbvision = video_drvdata(file);
 631
 632         /* Only one tuner */
 633         if (freq->tuner)
 634                 return -EINVAL;
 635         if (freq->type == V4L2_TUNER_RADIO)
 636                 freq->frequency = usbvision->radio_freq;
 637         else
 638                 freq->frequency = usbvision->tv_freq;
 639
 640         return 0;
 641 }
 642
 643 static int vidioc_s_frequency(struct file *file, void *priv,
 644                                 const struct v4l2_frequency *freq)
 645 {
 646         struct usb_usbvision *usbvision = video_drvdata(file);
 647         struct v4l2_frequency new_freq = *freq;
 648
 649         /* Only one tuner for now */
 650         if (freq->tuner)
 651                 return -EINVAL;
 652
 653         call_all(usbvision, tuner, s_frequency, freq);
 654         call_all(usbvision, tuner, g_frequency, &new_freq);
 655         if (freq->type == V4L2_TUNER_RADIO)
 656                 usbvision->radio_freq = new_freq.frequency;
 657         else
 658                 usbvision->tv_freq = new_freq.frequency;
 659
 660         return 0;
 661 }
 662
 663 static int vidioc_reqbufs(struct file *file,
 664                            void *priv, struct v4l2_requestbuffers *vr)
 665 {
 666         struct usb_usbvision *usbvision = video_drvdata(file);
 667         int ret;
 668
 669         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 670
 671         /* Check input validity:
 672            the user must do a VIDEO CAPTURE and MMAP method. */
 673         if (vr->memory != V4L2_MEMORY_MMAP)
 674                 return -EINVAL;
 675
 676         if (usbvision->streaming == stream_on) {
 677                 ret = usbvision_stream_interrupt(usbvision);
 678                 if (ret)
 679                         return ret;
 680         }
 681
 682         usbvision_frames_free(usbvision);
 683         usbvision_empty_framequeues(usbvision);
 684         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 685
 686         usbvision->cur_frame = NULL;
 687
 688         return 0;
 689 }
 690
 691 static int vidioc_querybuf(struct file *file,
 692                             void *priv, struct v4l2_buffer *vb)
 693 {
 694         struct usb_usbvision *usbvision = video_drvdata(file);
 695         struct usbvision_frame *frame;
 696
 697         /* FIXME : must control
 698            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 699         if (vb->index >= usbvision->num_frames)
 700                 return -EINVAL;
 701         /* Updating the corresponding frame state */
 702         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 703         frame = &usbvision->frame[vb->index];
 704         if (frame->grabstate >= frame_state_ready)
 705                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 706         if (frame->grabstate >= frame_state_done)
 707                 vb->flags |= V4L2_BUF_FLAG_DONE;
 708         if (frame->grabstate == frame_state_unused)
 709                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 710         vb->memory = V4L2_MEMORY_MMAP;
 711
 712         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 713
 714         vb->memory = V4L2_MEMORY_MMAP;
 715         vb->field = V4L2_FIELD_NONE;
 716         vb->length = usbvision->curwidth *
 717                 usbvision->curheight *
 718                 usbvision->palette.bytes_per_pixel;
 719         vb->timestamp = usbvision->frame[vb->index].timestamp;
 720         vb->sequence = usbvision->frame[vb->index].sequence;
 721         return 0;
 722 }
 723
 724 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 725 {
 726         struct usb_usbvision *usbvision = video_drvdata(file);
 727         struct usbvision_frame *frame;
 728         unsigned long lock_flags;
 729
 730         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 731         if (vb->index >= usbvision->num_frames)
 732                 return -EINVAL;
 733
 734         frame = &usbvision->frame[vb->index];
 735
 736         if (frame->grabstate != frame_state_unused)
 737                 return -EAGAIN;
 738
 739         /* Mark it as ready and enqueue frame */
 740         frame->grabstate = frame_state_ready;
 741         frame->scanstate = scan_state_scanning;
 742         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 743
 744         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 745
 746         /* set v4l2_format index */
 747         frame->v4l2_format = usbvision->palette;
 748
 749         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 750         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 751         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 752
 753         return 0;
 754 }
 755
 756 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 757 {
 758         struct usb_usbvision *usbvision = video_drvdata(file);
 759         int ret;
 760         struct usbvision_frame *f;
 761         unsigned long lock_flags;
 762
 763         if (list_empty(&(usbvision->outqueue))) {
 764                 if (usbvision->streaming == stream_idle)
 765                         return -EINVAL;
 766                 ret = wait_event_interruptible
 767                         (usbvision->wait_frame,
 768                          !list_empty(&(usbvision->outqueue)));
 769                 if (ret)
 770                         return ret;
 771         }
 772
 773         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 774         f = list_entry(usbvision->outqueue.next,
 775                        struct usbvision_frame, frame);
 776         list_del(usbvision->outqueue.next);
 777         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 778
 779         f->grabstate = frame_state_unused;
 780
 781         vb->memory = V4L2_MEMORY_MMAP;
 782         vb->flags = V4L2_BUF_FLAG_MAPPED |
 783                 V4L2_BUF_FLAG_QUEUED |
 784                 V4L2_BUF_FLAG_DONE |
 785                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 786         vb->index = f->index;
 787         vb->sequence = f->sequence;
 788         vb->timestamp = f->timestamp;
 789         vb->field = V4L2_FIELD_NONE;
 790         vb->bytesused = f->scanlength;
 791
 792         return 0;
 793 }
 794
 795 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 796 {
 797         struct usb_usbvision *usbvision = video_drvdata(file);
 798
 799         usbvision->streaming = stream_on;
 800         call_all(usbvision, video, s_stream, 1);
 801
 802         return 0;
 803 }
 804
 805 static int vidioc_streamoff(struct file *file,
 806                             void *priv, enum v4l2_buf_type type)
 807 {
 808         struct usb_usbvision *usbvision = video_drvdata(file);
 809
 810         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 811                 return -EINVAL;
 812
 813         if (usbvision->streaming == stream_on) {
 814                 usbvision_stream_interrupt(usbvision);
 815                 /* Stop all video streamings */
 816                 call_all(usbvision, video, s_stream, 0);
 817         }
 818         usbvision_empty_framequeues(usbvision);
 819
 820         return 0;
 821 }
 822
 823 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 824                                         struct v4l2_fmtdesc *vfd)
 825 {
 826         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 827                 return -EINVAL;
 828         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 829         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 830         return 0;
 831 }
 832
 833 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 834                                         struct v4l2_format *vf)
 835 {
 836         struct usb_usbvision *usbvision = video_drvdata(file);
 837         vf->fmt.pix.width = usbvision->curwidth;
 838         vf->fmt.pix.height = usbvision->curheight;
 839         vf->fmt.pix.pixelformat = usbvision->palette.format;
 840         vf->fmt.pix.bytesperline =
 841                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 842         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 843         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 844         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 845
 846         return 0;
 847 }
 848
 849 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 850                                struct v4l2_format *vf)
 851 {
 852         struct usb_usbvision *usbvision = video_drvdata(file);
 853         int format_idx;
 854
 855         /* Find requested format in available ones */
 856         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 857                 if (vf->fmt.pix.pixelformat ==
 858                    usbvision_v4l2_format[format_idx].format) {
 859                         usbvision->palette = usbvision_v4l2_format[format_idx];
 860                         break;
 861                 }
 862         }
 863         /* robustness */
 864         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 865                 return -EINVAL;
 866         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 867         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 868
 869         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 870                 usbvision->palette.bytes_per_pixel;
 871         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 872         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 873         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 874
 875         return 0;
 876 }
 877
 878 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 879                                struct v4l2_format *vf)
 880 {
 881         struct usb_usbvision *usbvision = video_drvdata(file);
 882         int ret;
 883
 884         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 885         if (ret)
 886                 return ret;
 887
 888         /* stop io in case it is already in progress */
 889         if (usbvision->streaming == stream_on) {
 890                 ret = usbvision_stream_interrupt(usbvision);
 891                 if (ret)
 892                         return ret;
 893         }
 894         usbvision_frames_free(usbvision);
 895         usbvision_empty_framequeues(usbvision);
 896
 897         usbvision->cur_frame = NULL;
 898
 899         /* by now we are committed to the new data... */
 900         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 901
 902         return 0;
 903 }
 904
 905 static ssize_t usbvision_read(struct file *file, char __user *buf,
 906                       size_t count, loff_t *ppos)
 907 {
 908         struct usb_usbvision *usbvision = video_drvdata(file);
 909         int noblock = file->f_flags & O_NONBLOCK;
 910         unsigned long lock_flags;
 911         int ret, i;
 912         struct usbvision_frame *frame;
 913
 914         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 915                (unsigned long)count, noblock);
 916
 917         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 918                 return -EFAULT;
 919
 920         /* This entry point is compatible with the mmap routines
 921            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 922            to get frames or call read on the device. */
 923         if (!usbvision->num_frames) {
 924                 /* First, allocate some frames to work with
 925                    if this has not been done with VIDIOC_REQBUF */
 926                 usbvision_frames_free(usbvision);
 927                 usbvision_empty_framequeues(usbvision);
 928                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 929         }
 930
 931         if (usbvision->streaming != stream_on) {
 932                 /* no stream is running, make it running ! */
 933                 usbvision->streaming = stream_on;
 934                 call_all(usbvision, video, s_stream, 1);
 935         }
 936
 937         /* Then, enqueue as many frames as possible
 938            (like a user of VIDIOC_QBUF would do) */
 939         for (i = 0; i < usbvision->num_frames; i++) {
 940                 frame = &usbvision->frame[i];
 941                 if (frame->grabstate == frame_state_unused) {
 942                         /* Mark it as ready and enqueue frame */
 943                         frame->grabstate = frame_state_ready;
 944                         frame->scanstate = scan_state_scanning;
 945                         /* Accumulated in usbvision_parse_data() */
 946                         frame->scanlength = 0;
 947
 948                         /* set v4l2_format index */
 949                         frame->v4l2_format = usbvision->palette;
 950
 951                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 952                         list_add_tail(&frame->frame, &usbvision->inqueue);
 953                         spin_unlock_irqrestore(&usbvision->queue_lock,
 954                                                lock_flags);
 955                 }
 956         }
 957
 958         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
 959         if (list_empty(&(usbvision->outqueue))) {
 960                 if (noblock)
 961                         return -EAGAIN;
 962
 963                 ret = wait_event_interruptible
 964                         (usbvision->wait_frame,
 965                          !list_empty(&(usbvision->outqueue)));
 966                 if (ret)
 967                         return ret;
 968         }
 969
 970         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 971         frame = list_entry(usbvision->outqueue.next,
 972                            struct usbvision_frame, frame);
 973         list_del(usbvision->outqueue.next);
 974         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 975
 976         /* An error returns an empty frame */
 977         if (frame->grabstate == frame_state_error) {
 978                 frame->bytes_read = 0;
 979                 return 0;
 980         }
 981
 982         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
 983                __func__,
 984                frame->index, frame->bytes_read, frame->scanlength);
 985
 986         /* copy bytes to user space; we allow for partials reads */
 987         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
 988                 count = frame->scanlength - frame->bytes_read;
 989
 990         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
 991                 return -EFAULT;
 992
 993         frame->bytes_read += count;
 994         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
 995                __func__,
 996                (unsigned long)count, frame->bytes_read);
 997
 998 #if 1
 999         /*
1000          * FIXME:
1001          * For now, forget the frame if it has not been read in one shot.
1002          */
1003         frame->bytes_read = 0;
1004
1005         /* Mark it as available to be used again. */
1006         frame->grabstate = frame_state_unused;
1007 #else
1008         if (frame->bytes_read >= frame->scanlength) {
1009                 /* All data has been read */
1010                 frame->bytes_read = 0;
1011
1012                 /* Mark it as available to be used again. */
1013                 frame->grabstate = frame_state_unused;
1014         }
1015 #endif
1016
1017         return count;
1018 }
1019
1020 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1021                       size_t count, loff_t *ppos)
1022 {
1023         struct usb_usbvision *usbvision = video_drvdata(file);
1024         int res;
1025
1026         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1027                 return -ERESTARTSYS;
1028         res = usbvision_read(file, buf, count, ppos);
1029         mutex_unlock(&usbvision->v4l2_lock);
1030         return res;
1031 }
1032
1033 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1034 {
1035         unsigned long size = vma->vm_end - vma->vm_start,
1036                 start = vma->vm_start;
1037         void *pos;
1038         u32 i;
1039         struct usb_usbvision *usbvision = video_drvdata(file);
1040
1041         PDEBUG(DBG_MMAP, "mmap");
1042
1043         if (!USBVISION_IS_OPERATIONAL(usbvision))
1044                 return -EFAULT;
1045
1046         if (!(vma->vm_flags & VM_WRITE) ||
1047             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1048                 return -EINVAL;
1049         }
1050
1051         for (i = 0; i < usbvision->num_frames; i++) {
1052                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1053                     vma->vm_pgoff)
1054                         break;
1055         }
1056         if (i == usbvision->num_frames) {
1057                 PDEBUG(DBG_MMAP,
1058                        "mmap: user supplied mapping address is out of range");
1059                 return -EINVAL;
1060         }
1061
1062         /* VM_IO is eventually going to replace PageReserved altogether */
1063         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1064
1065         pos = usbvision->frame[i].data;
1066         while (size > 0) {
1067                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1068                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1069                         return -EAGAIN;
1070                 }
1071                 start += PAGE_SIZE;
1072                 pos += PAGE_SIZE;
1073                 size -= PAGE_SIZE;
1074         }
1075
1076         return 0;
1077 }
1078
1079 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1080 {
1081         struct usb_usbvision *usbvision = video_drvdata(file);
1082         int res;
1083
1084         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1085                 return -ERESTARTSYS;
1086         res = usbvision_mmap(file, vma);
1087         mutex_unlock(&usbvision->v4l2_lock);
1088         return res;
1089 }
1090
1091 /*
1092  * Here comes the stuff for radio on usbvision based devices
1093  *
1094  */
1095 static int usbvision_radio_open(struct file *file)
1096 {
1097         struct usb_usbvision *usbvision = video_drvdata(file);
1098         int err_code = 0;
1099
1100         PDEBUG(DBG_IO, "%s:", __func__);
1101
1102         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1103                 return -ERESTARTSYS;
1104
1105         if (usbvision->remove_pending) {
1106                 err_code = -ENODEV;
1107                 goto out;
1108         }
1109         err_code = v4l2_fh_open(file);
1110         if (err_code)
1111                 goto out;
1112         if (usbvision->user) {
1113                 dev_err(&usbvision->rdev.dev,
1114                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1115                                 __func__);
1116                 err_code = -EBUSY;
1117         } else {
1118                 /* Alternate interface 1 is is the biggest frame size */
1119                 err_code = usbvision_set_alternate(usbvision);
1120                 if (err_code < 0) {
1121                         usbvision->last_error = err_code;
1122                         err_code = -EBUSY;
1123                         goto out;
1124                 }
1125
1126                 /* If so far no errors then we shall start the radio */
1127                 usbvision->radio = 1;
1128                 call_all(usbvision, tuner, s_radio);
1129                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1130                 usbvision->user++;
1131         }
1132 out:
1133         mutex_unlock(&usbvision->v4l2_lock);
1134         return err_code;
1135 }
1136
1137
1138 static int usbvision_radio_close(struct file *file)
1139 {
1140         struct usb_usbvision *usbvision = video_drvdata(file);
1141         int r;
1142
1143         PDEBUG(DBG_IO, "");
1144
1145         mutex_lock(&usbvision->v4l2_lock);
1146         /* Set packet size to 0 */
1147         usbvision->iface_alt = 0;
1148         usb_set_interface(usbvision->dev, usbvision->iface,
1149                                     usbvision->iface_alt);
1150
1151         usbvision_audio_off(usbvision);
1152         usbvision->radio = 0;
1153         usbvision->user--;
1154         r = usbvision->remove_pending;
1155         mutex_unlock(&usbvision->v4l2_lock);
1156
1157         if (r) {
1158                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1159                 v4l2_fh_release(file);
1160                 usbvision_release(usbvision);
1161                 return 0;
1162         }
1163
1164         PDEBUG(DBG_IO, "success");
1165         return v4l2_fh_release(file);
1166 }
1167
1168 /* Video registration stuff */
1169
1170 /* Video template */
1171 static const struct v4l2_file_operations usbvision_fops = {
1172         .owner             = THIS_MODULE,
1173         .open           = usbvision_v4l2_open,
1174         .release        = usbvision_v4l2_close,
1175         .read           = usbvision_v4l2_read,
1176         .mmap           = usbvision_v4l2_mmap,
1177         .unlocked_ioctl = video_ioctl2,
1178 };
1179
1180 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1181         .vidioc_querycap      = vidioc_querycap,
1182         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1183         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1184         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1185         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1186         .vidioc_reqbufs       = vidioc_reqbufs,
1187         .vidioc_querybuf      = vidioc_querybuf,
1188         .vidioc_qbuf          = vidioc_qbuf,
1189         .vidioc_dqbuf         = vidioc_dqbuf,
1190         .vidioc_s_std         = vidioc_s_std,
1191         .vidioc_g_std         = vidioc_g_std,
1192         .vidioc_enum_input    = vidioc_enum_input,
1193         .vidioc_g_input       = vidioc_g_input,
1194         .vidioc_s_input       = vidioc_s_input,
1195         .vidioc_streamon      = vidioc_streamon,
1196         .vidioc_streamoff     = vidioc_streamoff,
1197         .vidioc_g_tuner       = vidioc_g_tuner,
1198         .vidioc_s_tuner       = vidioc_s_tuner,
1199         .vidioc_g_frequency   = vidioc_g_frequency,
1200         .vidioc_s_frequency   = vidioc_s_frequency,
1201         .vidioc_log_status    = v4l2_ctrl_log_status,
1202         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1203         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1204 #ifdef CONFIG_VIDEO_ADV_DEBUG
1205         .vidioc_g_register    = vidioc_g_register,
1206         .vidioc_s_register    = vidioc_s_register,
1207 #endif
1208 };
1209
1210 static struct video_device usbvision_video_template = {
1211         .fops           = &usbvision_fops,
1212         .ioctl_ops      = &usbvision_ioctl_ops,
1213         .name           = "usbvision-video",
1214         .release        = video_device_release_empty,
1215         .tvnorms        = USBVISION_NORMS,
1216 };
1217
1218
1219 /* Radio template */
1220 static const struct v4l2_file_operations usbvision_radio_fops = {
1221         .owner             = THIS_MODULE,
1222         .open           = usbvision_radio_open,
1223         .release        = usbvision_radio_close,
1224         .poll           = v4l2_ctrl_poll,
1225         .unlocked_ioctl = video_ioctl2,
1226 };
1227
1228 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1229         .vidioc_querycap      = vidioc_querycap,
1230         .vidioc_g_tuner       = vidioc_g_tuner,
1231         .vidioc_s_tuner       = vidioc_s_tuner,
1232         .vidioc_g_frequency   = vidioc_g_frequency,
1233         .vidioc_s_frequency   = vidioc_s_frequency,
1234         .vidioc_log_status    = v4l2_ctrl_log_status,
1235         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1236         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1237 };
1238
1239 static struct video_device usbvision_radio_template = {
1240         .fops           = &usbvision_radio_fops,
1241         .name           = "usbvision-radio",
1242         .release        = video_device_release_empty,
1243         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1244 };
1245
1246
1247 static void usbvision_vdev_init(struct usb_usbvision *usbvision,
1248                                 struct video_device *vdev,
1249                                 const struct video_device *vdev_template,
1250                                 const char *name)
1251 {
1252         struct usb_device *usb_dev = usbvision->dev;
1253
1254         if (usb_dev == NULL) {
1255                 dev_err(&usbvision->dev->dev,
1256                         "%s: usbvision->dev is not set\n", __func__);
1257                 return;
1258         }
1259
1260         *vdev = *vdev_template;
1261         vdev->lock = &usbvision->v4l2_lock;
1262         vdev->v4l2_dev = &usbvision->v4l2_dev;
1263         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1264         video_set_drvdata(vdev, usbvision);
1265 }
1266
1267 /* unregister video4linux devices */
1268 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1269 {
1270         /* Radio Device: */
1271         if (video_is_registered(&usbvision->rdev)) {
1272                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1273                        video_device_node_name(&usbvision->rdev));
1274                 video_unregister_device(&usbvision->rdev);
1275         }
1276
1277         /* Video Device: */
1278         if (video_is_registered(&usbvision->vdev)) {
1279                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1280                        video_device_node_name(&usbvision->vdev));
1281                 video_unregister_device(&usbvision->vdev);
1282         }
1283 }
1284
1285 /* register video4linux devices */
1286 static int usbvision_register_video(struct usb_usbvision *usbvision)
1287 {
1288         int res = -ENOMEM;
1289
1290         /* Video Device: */
1291         usbvision_vdev_init(usbvision, &usbvision->vdev,
1292                               &usbvision_video_template, "USBVision Video");
1293         if (!usbvision->have_tuner) {
1294                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1295                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1296                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_G_FREQUENCY);
1297                 v4l2_disable_ioctl(&usbvision->vdev, VIDIOC_S_TUNER);
1298         }
1299         if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1300                 goto err_exit;
1301         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1302                usbvision->nr, video_device_node_name(&usbvision->vdev));
1303
1304         /* Radio Device: */
1305         if (usbvision_device_data[usbvision->dev_model].radio) {
1306                 /* usbvision has radio */
1307                 usbvision_vdev_init(usbvision, &usbvision->rdev,
1308                               &usbvision_radio_template, "USBVision Radio");
1309                 if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1310                         goto err_exit;
1311                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1312                        usbvision->nr, video_device_node_name(&usbvision->rdev));
1313         }
1314         /* all done */
1315         return 0;
1316
1317  err_exit:
1318         dev_err(&usbvision->dev->dev,
1319                 "USBVision[%d]: video_register_device() failed\n",
1320                         usbvision->nr);
1321         usbvision_unregister_video(usbvision);
1322         return res;
1323 }
1324
1325 /*
1326  * usbvision_alloc()
1327  *
1328  * This code allocates the struct usb_usbvision.
1329  * It is filled with default values.
1330  *
1331  * Returns NULL on error, a pointer to usb_usbvision else.
1332  *
1333  */
1334 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1335                                              struct usb_interface *intf)
1336 {
1337         struct usb_usbvision *usbvision;
1338
1339         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1340         if (usbvision == NULL)
1341                 return NULL;
1342
1343         usbvision->dev = dev;
1344         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1345                 goto err_free;
1346
1347         if (v4l2_ctrl_handler_init(&usbvision->hdl, 4))
1348                 goto err_unreg;
1349         usbvision->v4l2_dev.ctrl_handler = &usbvision->hdl;
1350         mutex_init(&usbvision->v4l2_lock);
1351
1352         /* prepare control urb for control messages during interrupts */
1353         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1354         if (usbvision->ctrl_urb == NULL)
1355                 goto err_unreg;
1356         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1357
1358         return usbvision;
1359
1360 err_unreg:
1361         v4l2_ctrl_handler_free(&usbvision->hdl);
1362         v4l2_device_unregister(&usbvision->v4l2_dev);
1363 err_free:
1364         kfree(usbvision);
1365         return NULL;
1366 }
1367
1368 /*
1369  * usbvision_release()
1370  *
1371  * This code does final release of struct usb_usbvision. This happens
1372  * after the device is disconnected -and- all clients closed their files.
1373  *
1374  */
1375 static void usbvision_release(struct usb_usbvision *usbvision)
1376 {
1377         PDEBUG(DBG_PROBE, "");
1378
1379         usbvision->initialized = 0;
1380
1381         usbvision_remove_sysfs(&usbvision->vdev);
1382         usbvision_unregister_video(usbvision);
1383         kfree(usbvision->alt_max_pkt_size);
1384
1385         usb_free_urb(usbvision->ctrl_urb);
1386
1387         v4l2_ctrl_handler_free(&usbvision->hdl);
1388         v4l2_device_unregister(&usbvision->v4l2_dev);
1389         kfree(usbvision);
1390
1391         PDEBUG(DBG_PROBE, "success");
1392 }
1393
1394
1395 /*********************** usb interface **********************************/
1396
1397 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1398 {
1399         int model;
1400
1401         if (usbvision == NULL)
1402                 return;
1403
1404         model = usbvision->dev_model;
1405         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1406
1407         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1408                 usbvision->vin_reg2_preset =
1409                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1410         } else {
1411                 usbvision->vin_reg2_preset = 0;
1412         }
1413
1414         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1415         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1416         usbvision->ctl_input = 0;
1417         usbvision->radio_freq = 87.5 * 16000;
1418         usbvision->tv_freq = 400 * 16;
1419
1420         /* This should be here to make i2c clients to be able to register */
1421         /* first switch off audio */
1422         if (usbvision_device_data[model].audio_channels > 0)
1423                 usbvision_audio_off(usbvision);
1424         /* and then power up the tuner */
1425         usbvision_power_on(usbvision);
1426         usbvision_i2c_register(usbvision);
1427 }
1428
1429 /*
1430  * usbvision_probe()
1431  *
1432  * This procedure queries device descriptor and accepts the interface
1433  * if it looks like USBVISION video device
1434  *
1435  */
1436 static int usbvision_probe(struct usb_interface *intf,
1437                            const struct usb_device_id *devid)
1438 {
1439         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1440         struct usb_interface *uif;
1441         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1442         const struct usb_host_interface *interface;
1443         struct usb_usbvision *usbvision = NULL;
1444         const struct usb_endpoint_descriptor *endpoint;
1445         int model, i, ret;
1446
1447         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1448                                 dev->descriptor.idVendor,
1449                                 dev->descriptor.idProduct, ifnum);
1450
1451         model = devid->driver_info;
1452         if (model < 0 || model >= usbvision_device_data_size) {
1453                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1454                 ret = -ENODEV;
1455                 goto err_usb;
1456         }
1457         printk(KERN_INFO "%s: %s found\n", __func__,
1458                                 usbvision_device_data[model].model_string);
1459
1460         if (usbvision_device_data[model].interface >= 0)
1461                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1462         else if (ifnum < dev->actconfig->desc.bNumInterfaces)
1463                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1464         else {
1465                 dev_err(&intf->dev, "interface %d is invalid, max is %d\n",
1466                     ifnum, dev->actconfig->desc.bNumInterfaces - 1);
1467                 ret = -ENODEV;
1468                 goto err_usb;
1469         }
1470
1471         if (interface->desc.bNumEndpoints < 2) {
1472                 dev_err(&intf->dev, "interface %d has %d endpoints, but must"
1473                     " have minimum 2\n", ifnum, interface->desc.bNumEndpoints);
1474                 ret = -ENODEV;
1475                 goto err_usb;
1476         }
1477         endpoint = &interface->endpoint[1].desc;
1478
1479         if (!usb_endpoint_xfer_isoc(endpoint)) {
1480                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1481                     __func__, ifnum);
1482                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1483                     __func__, endpoint->bmAttributes);
1484                 ret = -ENODEV;
1485                 goto err_usb;
1486         }
1487         if (usb_endpoint_dir_out(endpoint)) {
1488                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1489                     __func__, ifnum);
1490                 ret = -ENODEV;
1491                 goto err_usb;
1492         }
1493
1494         usbvision = usbvision_alloc(dev, intf);
1495         if (usbvision == NULL) {
1496                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1497                 ret = -ENOMEM;
1498                 goto err_usb;
1499         }
1500
1501         if (dev->descriptor.bNumConfigurations > 1)
1502                 usbvision->bridge_type = BRIDGE_NT1004;
1503         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1504                 usbvision->bridge_type = BRIDGE_NT1005;
1505         else
1506                 usbvision->bridge_type = BRIDGE_NT1003;
1507         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1508
1509         /* compute alternate max packet sizes */
1510         uif = dev->actconfig->interface[0];
1511
1512         usbvision->num_alt = uif->num_altsetting;
1513         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1514         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1515         if (usbvision->alt_max_pkt_size == NULL) {
1516                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1517                 ret = -ENOMEM;
1518                 goto err_pkt;
1519         }
1520
1521         for (i = 0; i < usbvision->num_alt; i++) {
1522                 u16 tmp;
1523
1524                 if (uif->altsetting[i].desc.bNumEndpoints < 2) {
1525                         ret = -ENODEV;
1526                         goto err_pkt;
1527                 }
1528
1529                 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1530                                       wMaxPacketSize);
1531                 usbvision->alt_max_pkt_size[i] =
1532                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1533                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1534                        usbvision->alt_max_pkt_size[i]);
1535         }
1536
1537
1538         usbvision->nr = usbvision_nr++;
1539
1540         spin_lock_init(&usbvision->queue_lock);
1541         init_waitqueue_head(&usbvision->wait_frame);
1542         init_waitqueue_head(&usbvision->wait_stream);
1543
1544         usbvision->have_tuner = usbvision_device_data[model].tuner;
1545         if (usbvision->have_tuner)
1546                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1547
1548         usbvision->dev_model = model;
1549         usbvision->remove_pending = 0;
1550         usbvision->iface = ifnum;
1551         usbvision->iface_alt = 0;
1552         usbvision->video_endp = endpoint->bEndpointAddress;
1553         usbvision->isoc_packet_size = 0;
1554         usbvision->usb_bandwidth = 0;
1555         usbvision->user = 0;
1556         usbvision->streaming = stream_off;
1557         usbvision_configure_video(usbvision);
1558         usbvision_register_video(usbvision);
1559
1560         usbvision_create_sysfs(&usbvision->vdev);
1561
1562         PDEBUG(DBG_PROBE, "success");
1563         return 0;
1564
1565 err_pkt:
1566         usbvision_release(usbvision);
1567 err_usb:
1568         usb_put_dev(dev);
1569         return ret;
1570 }
1571
1572
1573 /*
1574  * usbvision_disconnect()
1575  *
1576  * This procedure stops all driver activity, deallocates interface-private
1577  * structure (pointed by 'ptr') and after that driver should be removable
1578  * with no ill consequences.
1579  *
1580  */
1581 static void usbvision_disconnect(struct usb_interface *intf)
1582 {
1583         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1584         int u;
1585
1586         PDEBUG(DBG_PROBE, "");
1587
1588         if (usbvision == NULL) {
1589                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1590                 return;
1591         }
1592
1593         mutex_lock(&usbvision->v4l2_lock);
1594
1595         /* At this time we ask to cancel outstanding URBs */
1596         usbvision_stop_isoc(usbvision);
1597
1598         v4l2_device_disconnect(&usbvision->v4l2_dev);
1599         usbvision_i2c_unregister(usbvision);
1600         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1601         u = usbvision->user;
1602
1603         usb_put_dev(usbvision->dev);
1604         usbvision->dev = NULL;  /* USB device is no more */
1605
1606         mutex_unlock(&usbvision->v4l2_lock);
1607
1608         if (u) {
1609                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1610                        __func__);
1611                 wake_up_interruptible(&usbvision->wait_frame);
1612                 wake_up_interruptible(&usbvision->wait_stream);
1613         } else {
1614                 usbvision_release(usbvision);
1615         }
1616
1617         PDEBUG(DBG_PROBE, "success");
1618 }
1619
1620 static struct usb_driver usbvision_driver = {
1621         .name           = "usbvision",
1622         .id_table       = usbvision_table,
1623         .probe          = usbvision_probe,
1624         .disconnect     = usbvision_disconnect,
1625 };
1626
1627 /*
1628  * usbvision_init()
1629  *
1630  * This code is run to initialize the driver.
1631  *
1632  */
1633 static int __init usbvision_init(void)
1634 {
1635         int err_code;
1636
1637         PDEBUG(DBG_PROBE, "");
1638
1639         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1640         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1641         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1642
1643         /* disable planar mode support unless compression enabled */
1644         if (isoc_mode != ISOC_MODE_COMPRESS) {
1645                 /* FIXME : not the right way to set supported flag */
1646                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1647                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1648         }
1649
1650         err_code = usb_register(&usbvision_driver);
1651
1652         if (err_code == 0) {
1653                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1654                 PDEBUG(DBG_PROBE, "success");
1655         }
1656         return err_code;
1657 }
1658
1659 static void __exit usbvision_exit(void)
1660 {
1661         PDEBUG(DBG_PROBE, "");
1662
1663         usb_deregister(&usbvision_driver);
1664         PDEBUG(DBG_PROBE, "success");
1665 }
1666
1667 module_init(usbvision_init);
1668 module_exit(usbvision_exit);