drivers/media/usb/usbvision/usbvision-video.c

   1 /*
   2  * USB USBVISION Video device driver 0.9.10
   3  *
   4  *
   5  *
   6  * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7  *
   8  * This module is part of usbvision driver project.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Let's call the version 0.... until compression decoding is completely
  25  * implemented.
  26  *
  27  * This driver is written by Jose Ignacio Gijon and Joerg Heckenbach.
  28  * It was based on USB CPiA driver written by Peter Pregler,
  29  * Scott J. Bertin and Johannes Erdfelt
  30  * Ideas are taken from bttv driver by Ralph Metzler, Marcus Metzler &
  31  * Gerd Knorr and zoran 36120/36125 driver by Pauline Middelink
  32  * Updates to driver completed by Dwaine P. Garden
  33  *
  34  *
  35  * TODO:
  36  *     - use submit_urb for all setup packets
  37  *     - Fix memory settings for nt1004. It is 4 times as big as the
  38  *       nt1003 memory.
  39  *     - Add audio on endpoint 3 for nt1004 chip.
  40  *         Seems impossible, needs a codec interface.  Which one?
  41  *     - Clean up the driver.
  42  *     - optimization for performance.
  43  *     - Add Videotext capability (VBI).  Working on it.....
  44  *     - Check audio for other devices
  45  *
  46  */
  47
  48 #include <linux/kernel.h>
  49 #include <linux/list.h>
  50 #include <linux/timer.h>
  51 #include <linux/slab.h>
  52 #include <linux/mm.h>
  53 #include <linux/highmem.h>
  54 #include <linux/vmalloc.h>
  55 #include <linux/module.h>
  56 #include <linux/init.h>
  57 #include <linux/spinlock.h>
  58 #include <linux/io.h>
  59 #include <linux/videodev2.h>
  60 #include <linux/i2c.h>
  61
  62 #include <media/saa7115.h>
  63 #include <media/v4l2-common.h>
  64 #include <media/v4l2-ioctl.h>
  65 #include <media/tuner.h>
  66
  67 #include <linux/workqueue.h>
  68
  69 #include "usbvision.h"
  70 #include "usbvision-cards.h"
  71
  72 #define DRIVER_AUTHOR                                   \
  73         "Joerg Heckenbach <joerg@heckenbach-aw.de>, "   \
  74         "Dwaine Garden <DwaineGarden@rogers.com>"
  75 #define DRIVER_NAME "usbvision"
  76 #define DRIVER_ALIAS "USBVision"
  77 #define DRIVER_DESC "USBVision USB Video Device Driver for Linux"
  78 #define DRIVER_LICENSE "GPL"
  79 #define USBVISION_VERSION_STRING "0.9.11"
  80
  81 #define ENABLE_HEXDUMP  0       /* Enable if you need it */
  82
  83
  84 #ifdef USBVISION_DEBUG
  85         #define PDEBUG(level, fmt, args...) { \
  86                 if (video_debug & (level)) \
  87                         printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \
  88                                 __func__, __LINE__ , ## args); \
  89         }
  90 #else
  91         #define PDEBUG(level, fmt, args...) do {} while (0)
  92 #endif
  93
  94 #define DBG_IO          (1 << 1)
  95 #define DBG_PROBE       (1 << 2)
  96 #define DBG_MMAP        (1 << 3)
  97
  98 /* String operations */
  99 #define rmspace(str)    while (*str == ' ') str++;
 100 #define goto2next(str)  while (*str != ' ') str++; while (*str == ' ') str++;
 101
 102
 103 /* sequential number of usbvision device */
 104 static int usbvision_nr;
 105
 106 static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = {
 107         { 1, 1,  8, V4L2_PIX_FMT_GREY    , "GREY" },
 108         { 1, 2, 16, V4L2_PIX_FMT_RGB565  , "RGB565" },
 109         { 1, 3, 24, V4L2_PIX_FMT_RGB24   , "RGB24" },
 110         { 1, 4, 32, V4L2_PIX_FMT_RGB32   , "RGB32" },
 111         { 1, 2, 16, V4L2_PIX_FMT_RGB555  , "RGB555" },
 112         { 1, 2, 16, V4L2_PIX_FMT_YUYV    , "YUV422" },
 113         { 1, 2, 12, V4L2_PIX_FMT_YVU420  , "YUV420P" }, /* 1.5 ! */
 114         { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" }
 115 };
 116
 117 /* Function prototypes */
 118 static void usbvision_release(struct usb_usbvision *usbvision);
 119
 120 /* Default initialization of device driver parameters */
 121 /* Set the default format for ISOC endpoint */
 122 static int isoc_mode = ISOC_MODE_COMPRESS;
 123 /* Set the default Debug Mode of the device driver */
 124 static int video_debug;
 125 /* Set the default device to power on at startup */
 126 static int power_on_at_open = 1;
 127 /* Sequential Number of Video Device */
 128 static int video_nr = -1;
 129 /* Sequential Number of Radio Device */
 130 static int radio_nr = -1;
 131
 132 /* Grab parameters for the device driver */
 133
 134 /* Showing parameters under SYSFS */
 135 module_param(isoc_mode, int, 0444);
 136 module_param(video_debug, int, 0444);
 137 module_param(power_on_at_open, int, 0444);
 138 module_param(video_nr, int, 0444);
 139 module_param(radio_nr, int, 0444);
 140
 141 MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint.  Default: 0x60 (Compression On)");
 142 MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver.  Default: 0 (Off)");
 143 MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened.  Default: 1 (On)");
 144 MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX).  Default: -1 (autodetect)");
 145 MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX).  Default: -1 (autodetect)");
 146
 147
 148 /* Misc stuff */
 149 MODULE_AUTHOR(DRIVER_AUTHOR);
 150 MODULE_DESCRIPTION(DRIVER_DESC);
 151 MODULE_LICENSE(DRIVER_LICENSE);
 152 MODULE_VERSION(USBVISION_VERSION_STRING);
 153 MODULE_ALIAS(DRIVER_ALIAS);
 154
 155
 156 /*****************************************************************************/
 157 /* SYSFS Code - Copied from the stv680.c usb module.                         */
 158 /* Device information is located at /sys/class/video4linux/video0            */
 159 /* Device parameters information is located at /sys/module/usbvision         */
 160 /* Device USB Information is located at                                      */
 161 /*   /sys/bus/usb/drivers/USBVision Video Grabber                            */
 162 /*****************************************************************************/
 163
 164 #define YES_NO(x) ((x) ? "Yes" : "No")
 165
 166 static inline struct usb_usbvision *cd_to_usbvision(struct device *cd)
 167 {
 168         struct video_device *vdev =
 169                 container_of(cd, struct video_device, dev);
 170         return video_get_drvdata(vdev);
 171 }
 172
 173 static ssize_t show_version(struct device *cd,
 174                             struct device_attribute *attr, char *buf)
 175 {
 176         return sprintf(buf, "%s\n", USBVISION_VERSION_STRING);
 177 }
 178 static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
 179
 180 static ssize_t show_model(struct device *cd,
 181                           struct device_attribute *attr, char *buf)
 182 {
 183         struct video_device *vdev =
 184                 container_of(cd, struct video_device, dev);
 185         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 186         return sprintf(buf, "%s\n",
 187                        usbvision_device_data[usbvision->dev_model].model_string);
 188 }
 189 static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
 190
 191 static ssize_t show_hue(struct device *cd,
 192                         struct device_attribute *attr, char *buf)
 193 {
 194         struct video_device *vdev =
 195                 container_of(cd, struct video_device, dev);
 196         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 197         struct v4l2_control ctrl;
 198         ctrl.id = V4L2_CID_HUE;
 199         ctrl.value = 0;
 200         if (usbvision->user)
 201                 call_all(usbvision, core, g_ctrl, &ctrl);
 202         return sprintf(buf, "%d\n", ctrl.value);
 203 }
 204 static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
 205
 206 static ssize_t show_contrast(struct device *cd,
 207                              struct device_attribute *attr, char *buf)
 208 {
 209         struct video_device *vdev =
 210                 container_of(cd, struct video_device, dev);
 211         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 212         struct v4l2_control ctrl;
 213         ctrl.id = V4L2_CID_CONTRAST;
 214         ctrl.value = 0;
 215         if (usbvision->user)
 216                 call_all(usbvision, core, g_ctrl, &ctrl);
 217         return sprintf(buf, "%d\n", ctrl.value);
 218 }
 219 static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
 220
 221 static ssize_t show_brightness(struct device *cd,
 222                                struct device_attribute *attr, char *buf)
 223 {
 224         struct video_device *vdev =
 225                 container_of(cd, struct video_device, dev);
 226         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 227         struct v4l2_control ctrl;
 228         ctrl.id = V4L2_CID_BRIGHTNESS;
 229         ctrl.value = 0;
 230         if (usbvision->user)
 231                 call_all(usbvision, core, g_ctrl, &ctrl);
 232         return sprintf(buf, "%d\n", ctrl.value);
 233 }
 234 static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
 235
 236 static ssize_t show_saturation(struct device *cd,
 237                                struct device_attribute *attr, char *buf)
 238 {
 239         struct video_device *vdev =
 240                 container_of(cd, struct video_device, dev);
 241         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 242         struct v4l2_control ctrl;
 243         ctrl.id = V4L2_CID_SATURATION;
 244         ctrl.value = 0;
 245         if (usbvision->user)
 246                 call_all(usbvision, core, g_ctrl, &ctrl);
 247         return sprintf(buf, "%d\n", ctrl.value);
 248 }
 249 static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
 250
 251 static ssize_t show_streaming(struct device *cd,
 252                               struct device_attribute *attr, char *buf)
 253 {
 254         struct video_device *vdev =
 255                 container_of(cd, struct video_device, dev);
 256         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 257         return sprintf(buf, "%s\n",
 258                        YES_NO(usbvision->streaming == stream_on ? 1 : 0));
 259 }
 260 static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL);
 261
 262 static ssize_t show_compression(struct device *cd,
 263                                 struct device_attribute *attr, char *buf)
 264 {
 265         struct video_device *vdev =
 266                 container_of(cd, struct video_device, dev);
 267         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 268         return sprintf(buf, "%s\n",
 269                        YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS));
 270 }
 271 static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL);
 272
 273 static ssize_t show_device_bridge(struct device *cd,
 274                                   struct device_attribute *attr, char *buf)
 275 {
 276         struct video_device *vdev =
 277                 container_of(cd, struct video_device, dev);
 278         struct usb_usbvision *usbvision = video_get_drvdata(vdev);
 279         return sprintf(buf, "%d\n", usbvision->bridge_type);
 280 }
 281 static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL);
 282
 283 static void usbvision_create_sysfs(struct video_device *vdev)
 284 {
 285         int res;
 286
 287         if (!vdev)
 288                 return;
 289         do {
 290                 res = device_create_file(&vdev->dev, &dev_attr_version);
 291                 if (res < 0)
 292                         break;
 293                 res = device_create_file(&vdev->dev, &dev_attr_model);
 294                 if (res < 0)
 295                         break;
 296                 res = device_create_file(&vdev->dev, &dev_attr_hue);
 297                 if (res < 0)
 298                         break;
 299                 res = device_create_file(&vdev->dev, &dev_attr_contrast);
 300                 if (res < 0)
 301                         break;
 302                 res = device_create_file(&vdev->dev, &dev_attr_brightness);
 303                 if (res < 0)
 304                         break;
 305                 res = device_create_file(&vdev->dev, &dev_attr_saturation);
 306                 if (res < 0)
 307                         break;
 308                 res = device_create_file(&vdev->dev, &dev_attr_streaming);
 309                 if (res < 0)
 310                         break;
 311                 res = device_create_file(&vdev->dev, &dev_attr_compression);
 312                 if (res < 0)
 313                         break;
 314                 res = device_create_file(&vdev->dev, &dev_attr_bridge);
 315                 if (res >= 0)
 316                         return;
 317         } while (0);
 318
 319         dev_err(&vdev->dev, "%s error: %d\n", __func__, res);
 320 }
 321
 322 static void usbvision_remove_sysfs(struct video_device *vdev)
 323 {
 324         if (vdev) {
 325                 device_remove_file(&vdev->dev, &dev_attr_version);
 326                 device_remove_file(&vdev->dev, &dev_attr_model);
 327                 device_remove_file(&vdev->dev, &dev_attr_hue);
 328                 device_remove_file(&vdev->dev, &dev_attr_contrast);
 329                 device_remove_file(&vdev->dev, &dev_attr_brightness);
 330                 device_remove_file(&vdev->dev, &dev_attr_saturation);
 331                 device_remove_file(&vdev->dev, &dev_attr_streaming);
 332                 device_remove_file(&vdev->dev, &dev_attr_compression);
 333                 device_remove_file(&vdev->dev, &dev_attr_bridge);
 334         }
 335 }
 336
 337 /*
 338  * usbvision_open()
 339  *
 340  * This is part of Video 4 Linux API. The driver can be opened by one
 341  * client only (checks internal counter 'usbvision->user'). The procedure
 342  * then allocates buffers needed for video processing.
 343  *
 344  */
 345 static int usbvision_v4l2_open(struct file *file)
 346 {
 347         struct usb_usbvision *usbvision = video_drvdata(file);
 348         int err_code = 0;
 349
 350         PDEBUG(DBG_IO, "open");
 351
 352         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
 353                 return -ERESTARTSYS;
 354         usbvision_reset_power_off_timer(usbvision);
 355
 356         if (usbvision->user)
 357                 err_code = -EBUSY;
 358         else {
 359                 /* Allocate memory for the scratch ring buffer */
 360                 err_code = usbvision_scratch_alloc(usbvision);
 361                 if (isoc_mode == ISOC_MODE_COMPRESS) {
 362                         /* Allocate intermediate decompression buffers
 363                            only if needed */
 364                         err_code = usbvision_decompress_alloc(usbvision);
 365                 }
 366                 if (err_code) {
 367                         /* Deallocate all buffers if trouble */
 368                         usbvision_scratch_free(usbvision);
 369                         usbvision_decompress_free(usbvision);
 370                 }
 371         }
 372
 373         /* If so far no errors then we shall start the camera */
 374         if (!err_code) {
 375                 if (usbvision->power == 0) {
 376                         usbvision_power_on(usbvision);
 377                         usbvision_i2c_register(usbvision);
 378                 }
 379
 380                 /* Send init sequence only once, it's large! */
 381                 if (!usbvision->initialized) {
 382                         int setup_ok = 0;
 383                         setup_ok = usbvision_setup(usbvision, isoc_mode);
 384                         if (setup_ok)
 385                                 usbvision->initialized = 1;
 386                         else
 387                                 err_code = -EBUSY;
 388                 }
 389
 390                 if (!err_code) {
 391                         usbvision_begin_streaming(usbvision);
 392                         err_code = usbvision_init_isoc(usbvision);
 393                         /* device must be initialized before isoc transfer */
 394                         usbvision_muxsel(usbvision, 0);
 395                         usbvision->user++;
 396                 } else {
 397                         if (power_on_at_open) {
 398                                 usbvision_i2c_unregister(usbvision);
 399                                 usbvision_power_off(usbvision);
 400                                 usbvision->initialized = 0;
 401                         }
 402                 }
 403         }
 404
 405         /* prepare queues */
 406         usbvision_empty_framequeues(usbvision);
 407         mutex_unlock(&usbvision->v4l2_lock);
 408
 409         PDEBUG(DBG_IO, "success");
 410         return err_code;
 411 }
 412
 413 /*
 414  * usbvision_v4l2_close()
 415  *
 416  * This is part of Video 4 Linux API. The procedure
 417  * stops streaming and deallocates all buffers that were earlier
 418  * allocated in usbvision_v4l2_open().
 419  *
 420  */
 421 static int usbvision_v4l2_close(struct file *file)
 422 {
 423         struct usb_usbvision *usbvision = video_drvdata(file);
 424
 425         PDEBUG(DBG_IO, "close");
 426
 427         mutex_lock(&usbvision->v4l2_lock);
 428         usbvision_audio_off(usbvision);
 429         usbvision_restart_isoc(usbvision);
 430         usbvision_stop_isoc(usbvision);
 431
 432         usbvision_decompress_free(usbvision);
 433         usbvision_frames_free(usbvision);
 434         usbvision_empty_framequeues(usbvision);
 435         usbvision_scratch_free(usbvision);
 436
 437         usbvision->user--;
 438
 439         if (power_on_at_open) {
 440                 /* power off in a little while
 441                    to avoid off/on every close/open short sequences */
 442                 usbvision_set_power_off_timer(usbvision);
 443                 usbvision->initialized = 0;
 444         }
 445
 446         if (usbvision->remove_pending) {
 447                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
 448                 usbvision_release(usbvision);
 449         }
 450         mutex_unlock(&usbvision->v4l2_lock);
 451
 452         PDEBUG(DBG_IO, "success");
 453         return 0;
 454 }
 455
 456
 457 /*
 458  * usbvision_ioctl()
 459  *
 460  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 461  *
 462  */
 463 #ifdef CONFIG_VIDEO_ADV_DEBUG
 464 static int vidioc_g_register(struct file *file, void *priv,
 465                                 struct v4l2_dbg_register *reg)
 466 {
 467         struct usb_usbvision *usbvision = video_drvdata(file);
 468         int err_code;
 469
 470         if (!v4l2_chip_match_host(&reg->match))
 471                 return -EINVAL;
 472         /* NT100x has a 8-bit register space */
 473         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 474         if (err_code < 0) {
 475                 dev_err(&usbvision->vdev->dev,
 476                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 477                                 __func__, err_code);
 478                 return err_code;
 479         }
 480         reg->val = err_code;
 481         reg->size = 1;
 482         return 0;
 483 }
 484
 485 static int vidioc_s_register(struct file *file, void *priv,
 486                                 struct v4l2_dbg_register *reg)
 487 {
 488         struct usb_usbvision *usbvision = video_drvdata(file);
 489         int err_code;
 490
 491         if (!v4l2_chip_match_host(&reg->match))
 492                 return -EINVAL;
 493         /* NT100x has a 8-bit register space */
 494         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 495         if (err_code < 0) {
 496                 dev_err(&usbvision->vdev->dev,
 497                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 498                                 __func__, err_code);
 499                 return err_code;
 500         }
 501         return 0;
 502 }
 503 #endif
 504
 505 static int vidioc_querycap(struct file *file, void  *priv,
 506                                         struct v4l2_capability *vc)
 507 {
 508         struct usb_usbvision *usbvision = video_drvdata(file);
 509
 510         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 511         strlcpy(vc->card,
 512                 usbvision_device_data[usbvision->dev_model].model_string,
 513                 sizeof(vc->card));
 514         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 515         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 516                 V4L2_CAP_AUDIO |
 517                 V4L2_CAP_READWRITE |
 518                 V4L2_CAP_STREAMING |
 519                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 520         return 0;
 521 }
 522
 523 static int vidioc_enum_input(struct file *file, void *priv,
 524                                 struct v4l2_input *vi)
 525 {
 526         struct usb_usbvision *usbvision = video_drvdata(file);
 527         int chan;
 528
 529         if (vi->index >= usbvision->video_inputs)
 530                 return -EINVAL;
 531         if (usbvision->have_tuner)
 532                 chan = vi->index;
 533         else
 534                 chan = vi->index + 1; /* skip Television string*/
 535
 536         /* Determine the requested input characteristics
 537            specific for each usbvision card model */
 538         switch (chan) {
 539         case 0:
 540                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 541                         strcpy(vi->name, "White Video Input");
 542                 } else {
 543                         strcpy(vi->name, "Television");
 544                         vi->type = V4L2_INPUT_TYPE_TUNER;
 545                         vi->audioset = 1;
 546                         vi->tuner = chan;
 547                         vi->std = USBVISION_NORMS;
 548                 }
 549                 break;
 550         case 1:
 551                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 552                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 553                         strcpy(vi->name, "Green Video Input");
 554                 else
 555                         strcpy(vi->name, "Composite Video Input");
 556                 vi->std = V4L2_STD_PAL;
 557                 break;
 558         case 2:
 559                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 560                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 561                         strcpy(vi->name, "Yellow Video Input");
 562                 else
 563                         strcpy(vi->name, "S-Video Input");
 564                 vi->std = V4L2_STD_PAL;
 565                 break;
 566         case 3:
 567                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 568                 strcpy(vi->name, "Red Video Input");
 569                 vi->std = V4L2_STD_PAL;
 570                 break;
 571         }
 572         return 0;
 573 }
 574
 575 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 576 {
 577         struct usb_usbvision *usbvision = video_drvdata(file);
 578
 579         *input = usbvision->ctl_input;
 580         return 0;
 581 }
 582
 583 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 584 {
 585         struct usb_usbvision *usbvision = video_drvdata(file);
 586
 587         if (input >= usbvision->video_inputs)
 588                 return -EINVAL;
 589
 590         usbvision_muxsel(usbvision, input);
 591         usbvision_set_input(usbvision);
 592         usbvision_set_output(usbvision,
 593                              usbvision->curwidth,
 594                              usbvision->curheight);
 595         return 0;
 596 }
 597
 598 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id)
 599 {
 600         struct usb_usbvision *usbvision = video_drvdata(file);
 601
 602         usbvision->tvnorm_id = *id;
 603
 604         call_all(usbvision, core, s_std, usbvision->tvnorm_id);
 605         /* propagate the change to the decoder */
 606         usbvision_muxsel(usbvision, usbvision->ctl_input);
 607
 608         return 0;
 609 }
 610
 611 static int vidioc_g_tuner(struct file *file, void *priv,
 612                                 struct v4l2_tuner *vt)
 613 {
 614         struct usb_usbvision *usbvision = video_drvdata(file);
 615
 616         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
 617                 return -EINVAL;
 618         if (usbvision->radio) {
 619                 strcpy(vt->name, "Radio");
 620                 vt->type = V4L2_TUNER_RADIO;
 621         } else {
 622                 strcpy(vt->name, "Television");
 623         }
 624         /* Let clients fill in the remainder of this struct */
 625         call_all(usbvision, tuner, g_tuner, vt);
 626
 627         return 0;
 628 }
 629
 630 static int vidioc_s_tuner(struct file *file, void *priv,
 631                                 struct v4l2_tuner *vt)
 632 {
 633         struct usb_usbvision *usbvision = video_drvdata(file);
 634
 635         /* Only no or one tuner for now */
 636         if (!usbvision->have_tuner || vt->index)
 637                 return -EINVAL;
 638         /* let clients handle this */
 639         call_all(usbvision, tuner, s_tuner, vt);
 640
 641         return 0;
 642 }
 643
 644 static int vidioc_g_frequency(struct file *file, void *priv,
 645                                 struct v4l2_frequency *freq)
 646 {
 647         struct usb_usbvision *usbvision = video_drvdata(file);
 648
 649         freq->tuner = 0; /* Only one tuner */
 650         if (usbvision->radio)
 651                 freq->type = V4L2_TUNER_RADIO;
 652         else
 653                 freq->type = V4L2_TUNER_ANALOG_TV;
 654         freq->frequency = usbvision->freq;
 655
 656         return 0;
 657 }
 658
 659 static int vidioc_s_frequency(struct file *file, void *priv,
 660                                 struct v4l2_frequency *freq)
 661 {
 662         struct usb_usbvision *usbvision = video_drvdata(file);
 663
 664         /* Only no or one tuner for now */
 665         if (!usbvision->have_tuner || freq->tuner)
 666                 return -EINVAL;
 667
 668         usbvision->freq = freq->frequency;
 669         call_all(usbvision, tuner, s_frequency, freq);
 670
 671         return 0;
 672 }
 673
 674 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 675 {
 676         struct usb_usbvision *usbvision = video_drvdata(file);
 677
 678         if (usbvision->radio)
 679                 strcpy(a->name, "Radio");
 680         else
 681                 strcpy(a->name, "TV");
 682
 683         return 0;
 684 }
 685
 686 static int vidioc_s_audio(struct file *file, void *fh,
 687                           const struct v4l2_audio *a)
 688 {
 689         if (a->index)
 690                 return -EINVAL;
 691         return 0;
 692 }
 693
 694 static int vidioc_queryctrl(struct file *file, void *priv,
 695                             struct v4l2_queryctrl *ctrl)
 696 {
 697         struct usb_usbvision *usbvision = video_drvdata(file);
 698
 699         call_all(usbvision, core, queryctrl, ctrl);
 700
 701         if (!ctrl->type)
 702                 return -EINVAL;
 703
 704         return 0;
 705 }
 706
 707 static int vidioc_g_ctrl(struct file *file, void *priv,
 708                                 struct v4l2_control *ctrl)
 709 {
 710         struct usb_usbvision *usbvision = video_drvdata(file);
 711
 712         call_all(usbvision, core, g_ctrl, ctrl);
 713         return 0;
 714 }
 715
 716 static int vidioc_s_ctrl(struct file *file, void *priv,
 717                                 struct v4l2_control *ctrl)
 718 {
 719         struct usb_usbvision *usbvision = video_drvdata(file);
 720
 721         call_all(usbvision, core, s_ctrl, ctrl);
 722         return 0;
 723 }
 724
 725 static int vidioc_reqbufs(struct file *file,
 726                            void *priv, struct v4l2_requestbuffers *vr)
 727 {
 728         struct usb_usbvision *usbvision = video_drvdata(file);
 729         int ret;
 730
 731         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 732
 733         /* Check input validity:
 734            the user must do a VIDEO CAPTURE and MMAP method. */
 735         if (vr->memory != V4L2_MEMORY_MMAP)
 736                 return -EINVAL;
 737
 738         if (usbvision->streaming == stream_on) {
 739                 ret = usbvision_stream_interrupt(usbvision);
 740                 if (ret)
 741                         return ret;
 742         }
 743
 744         usbvision_frames_free(usbvision);
 745         usbvision_empty_framequeues(usbvision);
 746         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 747
 748         usbvision->cur_frame = NULL;
 749
 750         return 0;
 751 }
 752
 753 static int vidioc_querybuf(struct file *file,
 754                             void *priv, struct v4l2_buffer *vb)
 755 {
 756         struct usb_usbvision *usbvision = video_drvdata(file);
 757         struct usbvision_frame *frame;
 758
 759         /* FIXME : must control
 760            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 761         if (vb->index >= usbvision->num_frames)
 762                 return -EINVAL;
 763         /* Updating the corresponding frame state */
 764         vb->flags = 0;
 765         frame = &usbvision->frame[vb->index];
 766         if (frame->grabstate >= frame_state_ready)
 767                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 768         if (frame->grabstate >= frame_state_done)
 769                 vb->flags |= V4L2_BUF_FLAG_DONE;
 770         if (frame->grabstate == frame_state_unused)
 771                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 772         vb->memory = V4L2_MEMORY_MMAP;
 773
 774         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 775
 776         vb->memory = V4L2_MEMORY_MMAP;
 777         vb->field = V4L2_FIELD_NONE;
 778         vb->length = usbvision->curwidth *
 779                 usbvision->curheight *
 780                 usbvision->palette.bytes_per_pixel;
 781         vb->timestamp = usbvision->frame[vb->index].timestamp;
 782         vb->sequence = usbvision->frame[vb->index].sequence;
 783         return 0;
 784 }
 785
 786 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 787 {
 788         struct usb_usbvision *usbvision = video_drvdata(file);
 789         struct usbvision_frame *frame;
 790         unsigned long lock_flags;
 791
 792         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 793         if (vb->index >= usbvision->num_frames)
 794                 return -EINVAL;
 795
 796         frame = &usbvision->frame[vb->index];
 797
 798         if (frame->grabstate != frame_state_unused)
 799                 return -EAGAIN;
 800
 801         /* Mark it as ready and enqueue frame */
 802         frame->grabstate = frame_state_ready;
 803         frame->scanstate = scan_state_scanning;
 804         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 805
 806         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 807
 808         /* set v4l2_format index */
 809         frame->v4l2_format = usbvision->palette;
 810
 811         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 812         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 813         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 814
 815         return 0;
 816 }
 817
 818 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 819 {
 820         struct usb_usbvision *usbvision = video_drvdata(file);
 821         int ret;
 822         struct usbvision_frame *f;
 823         unsigned long lock_flags;
 824
 825         if (list_empty(&(usbvision->outqueue))) {
 826                 if (usbvision->streaming == stream_idle)
 827                         return -EINVAL;
 828                 ret = wait_event_interruptible
 829                         (usbvision->wait_frame,
 830                          !list_empty(&(usbvision->outqueue)));
 831                 if (ret)
 832                         return ret;
 833         }
 834
 835         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 836         f = list_entry(usbvision->outqueue.next,
 837                        struct usbvision_frame, frame);
 838         list_del(usbvision->outqueue.next);
 839         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 840
 841         f->grabstate = frame_state_unused;
 842
 843         vb->memory = V4L2_MEMORY_MMAP;
 844         vb->flags = V4L2_BUF_FLAG_MAPPED |
 845                 V4L2_BUF_FLAG_QUEUED |
 846                 V4L2_BUF_FLAG_DONE;
 847         vb->index = f->index;
 848         vb->sequence = f->sequence;
 849         vb->timestamp = f->timestamp;
 850         vb->field = V4L2_FIELD_NONE;
 851         vb->bytesused = f->scanlength;
 852
 853         return 0;
 854 }
 855
 856 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 857 {
 858         struct usb_usbvision *usbvision = video_drvdata(file);
 859
 860         usbvision->streaming = stream_on;
 861         call_all(usbvision, video, s_stream, 1);
 862
 863         return 0;
 864 }
 865
 866 static int vidioc_streamoff(struct file *file,
 867                             void *priv, enum v4l2_buf_type type)
 868 {
 869         struct usb_usbvision *usbvision = video_drvdata(file);
 870
 871         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 872                 return -EINVAL;
 873
 874         if (usbvision->streaming == stream_on) {
 875                 usbvision_stream_interrupt(usbvision);
 876                 /* Stop all video streamings */
 877                 call_all(usbvision, video, s_stream, 0);
 878         }
 879         usbvision_empty_framequeues(usbvision);
 880
 881         return 0;
 882 }
 883
 884 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 885                                         struct v4l2_fmtdesc *vfd)
 886 {
 887         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 888                 return -EINVAL;
 889         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 890         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 891         return 0;
 892 }
 893
 894 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 895                                         struct v4l2_format *vf)
 896 {
 897         struct usb_usbvision *usbvision = video_drvdata(file);
 898         vf->fmt.pix.width = usbvision->curwidth;
 899         vf->fmt.pix.height = usbvision->curheight;
 900         vf->fmt.pix.pixelformat = usbvision->palette.format;
 901         vf->fmt.pix.bytesperline =
 902                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 903         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 904         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 905         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 906
 907         return 0;
 908 }
 909
 910 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 911                                struct v4l2_format *vf)
 912 {
 913         struct usb_usbvision *usbvision = video_drvdata(file);
 914         int format_idx;
 915
 916         /* Find requested format in available ones */
 917         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 918                 if (vf->fmt.pix.pixelformat ==
 919                    usbvision_v4l2_format[format_idx].format) {
 920                         usbvision->palette = usbvision_v4l2_format[format_idx];
 921                         break;
 922                 }
 923         }
 924         /* robustness */
 925         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 926                 return -EINVAL;
 927         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 928         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 929
 930         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 931                 usbvision->palette.bytes_per_pixel;
 932         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 933
 934         return 0;
 935 }
 936
 937 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 938                                struct v4l2_format *vf)
 939 {
 940         struct usb_usbvision *usbvision = video_drvdata(file);
 941         int ret;
 942
 943         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 944         if (ret)
 945                 return ret;
 946
 947         /* stop io in case it is already in progress */
 948         if (usbvision->streaming == stream_on) {
 949                 ret = usbvision_stream_interrupt(usbvision);
 950                 if (ret)
 951                         return ret;
 952         }
 953         usbvision_frames_free(usbvision);
 954         usbvision_empty_framequeues(usbvision);
 955
 956         usbvision->cur_frame = NULL;
 957
 958         /* by now we are committed to the new data... */
 959         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 960
 961         return 0;
 962 }
 963
 964 static ssize_t usbvision_read(struct file *file, char __user *buf,
 965                       size_t count, loff_t *ppos)
 966 {
 967         struct usb_usbvision *usbvision = video_drvdata(file);
 968         int noblock = file->f_flags & O_NONBLOCK;
 969         unsigned long lock_flags;
 970         int ret, i;
 971         struct usbvision_frame *frame;
 972
 973         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 974                (unsigned long)count, noblock);
 975
 976         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 977                 return -EFAULT;
 978
 979         /* This entry point is compatible with the mmap routines
 980            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 981            to get frames or call read on the device. */
 982         if (!usbvision->num_frames) {
 983                 /* First, allocate some frames to work with
 984                    if this has not been done with VIDIOC_REQBUF */
 985                 usbvision_frames_free(usbvision);
 986                 usbvision_empty_framequeues(usbvision);
 987                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 988         }
 989
 990         if (usbvision->streaming != stream_on) {
 991                 /* no stream is running, make it running ! */
 992                 usbvision->streaming = stream_on;
 993                 call_all(usbvision, video, s_stream, 1);
 994         }
 995
 996         /* Then, enqueue as many frames as possible
 997            (like a user of VIDIOC_QBUF would do) */
 998         for (i = 0; i < usbvision->num_frames; i++) {
 999                 frame = &usbvision->frame[i];
1000                 if (frame->grabstate == frame_state_unused) {
1001                         /* Mark it as ready and enqueue frame */
1002                         frame->grabstate = frame_state_ready;
1003                         frame->scanstate = scan_state_scanning;
1004                         /* Accumulated in usbvision_parse_data() */
1005                         frame->scanlength = 0;
1006
1007                         /* set v4l2_format index */
1008                         frame->v4l2_format = usbvision->palette;
1009
1010                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1011                         list_add_tail(&frame->frame, &usbvision->inqueue);
1012                         spin_unlock_irqrestore(&usbvision->queue_lock,
1013                                                lock_flags);
1014                 }
1015         }
1016
1017         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1018         if (list_empty(&(usbvision->outqueue))) {
1019                 if (noblock)
1020                         return -EAGAIN;
1021
1022                 ret = wait_event_interruptible
1023                         (usbvision->wait_frame,
1024                          !list_empty(&(usbvision->outqueue)));
1025                 if (ret)
1026                         return ret;
1027         }
1028
1029         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1030         frame = list_entry(usbvision->outqueue.next,
1031                            struct usbvision_frame, frame);
1032         list_del(usbvision->outqueue.next);
1033         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1034
1035         /* An error returns an empty frame */
1036         if (frame->grabstate == frame_state_error) {
1037                 frame->bytes_read = 0;
1038                 return 0;
1039         }
1040
1041         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1042                __func__,
1043                frame->index, frame->bytes_read, frame->scanlength);
1044
1045         /* copy bytes to user space; we allow for partials reads */
1046         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1047                 count = frame->scanlength - frame->bytes_read;
1048
1049         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1050                 return -EFAULT;
1051
1052         frame->bytes_read += count;
1053         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1054                __func__,
1055                (unsigned long)count, frame->bytes_read);
1056
1057         /* For now, forget the frame if it has not been read in one shot. */
1058 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1059                 frame->bytes_read = 0;
1060
1061                 /* Mark it as available to be used again. */
1062                 frame->grabstate = frame_state_unused;
1063 /*      } */
1064
1065         return count;
1066 }
1067
1068 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1069                       size_t count, loff_t *ppos)
1070 {
1071         struct usb_usbvision *usbvision = video_drvdata(file);
1072         int res;
1073
1074         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1075                 return -ERESTARTSYS;
1076         res = usbvision_read(file, buf, count, ppos);
1077         mutex_unlock(&usbvision->v4l2_lock);
1078         return res;
1079 }
1080
1081 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1082 {
1083         unsigned long size = vma->vm_end - vma->vm_start,
1084                 start = vma->vm_start;
1085         void *pos;
1086         u32 i;
1087         struct usb_usbvision *usbvision = video_drvdata(file);
1088
1089         PDEBUG(DBG_MMAP, "mmap");
1090
1091         if (!USBVISION_IS_OPERATIONAL(usbvision))
1092                 return -EFAULT;
1093
1094         if (!(vma->vm_flags & VM_WRITE) ||
1095             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1096                 return -EINVAL;
1097         }
1098
1099         for (i = 0; i < usbvision->num_frames; i++) {
1100                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1101                     vma->vm_pgoff)
1102                         break;
1103         }
1104         if (i == usbvision->num_frames) {
1105                 PDEBUG(DBG_MMAP,
1106                        "mmap: user supplied mapping address is out of range");
1107                 return -EINVAL;
1108         }
1109
1110         /* VM_IO is eventually going to replace PageReserved altogether */
1111         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1112
1113         pos = usbvision->frame[i].data;
1114         while (size > 0) {
1115                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1116                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1117                         return -EAGAIN;
1118                 }
1119                 start += PAGE_SIZE;
1120                 pos += PAGE_SIZE;
1121                 size -= PAGE_SIZE;
1122         }
1123
1124         return 0;
1125 }
1126
1127 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1128 {
1129         struct usb_usbvision *usbvision = video_drvdata(file);
1130         int res;
1131
1132         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1133                 return -ERESTARTSYS;
1134         res = usbvision_mmap(file, vma);
1135         mutex_unlock(&usbvision->v4l2_lock);
1136         return res;
1137 }
1138
1139 /*
1140  * Here comes the stuff for radio on usbvision based devices
1141  *
1142  */
1143 static int usbvision_radio_open(struct file *file)
1144 {
1145         struct usb_usbvision *usbvision = video_drvdata(file);
1146         int err_code = 0;
1147
1148         PDEBUG(DBG_IO, "%s:", __func__);
1149
1150         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1151                 return -ERESTARTSYS;
1152         if (usbvision->user) {
1153                 dev_err(&usbvision->rdev->dev,
1154                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1155                                 __func__);
1156                 err_code = -EBUSY;
1157         } else {
1158                 if (power_on_at_open) {
1159                         usbvision_reset_power_off_timer(usbvision);
1160                         if (usbvision->power == 0) {
1161                                 usbvision_power_on(usbvision);
1162                                 usbvision_i2c_register(usbvision);
1163                         }
1164                 }
1165
1166                 /* Alternate interface 1 is is the biggest frame size */
1167                 err_code = usbvision_set_alternate(usbvision);
1168                 if (err_code < 0) {
1169                         usbvision->last_error = err_code;
1170                         err_code = -EBUSY;
1171                         goto out;
1172                 }
1173
1174                 /* If so far no errors then we shall start the radio */
1175                 usbvision->radio = 1;
1176                 call_all(usbvision, tuner, s_radio);
1177                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1178                 usbvision->user++;
1179         }
1180
1181         if (err_code) {
1182                 if (power_on_at_open) {
1183                         usbvision_i2c_unregister(usbvision);
1184                         usbvision_power_off(usbvision);
1185                         usbvision->initialized = 0;
1186                 }
1187         }
1188 out:
1189         mutex_unlock(&usbvision->v4l2_lock);
1190         return err_code;
1191 }
1192
1193
1194 static int usbvision_radio_close(struct file *file)
1195 {
1196         struct usb_usbvision *usbvision = video_drvdata(file);
1197         int err_code = 0;
1198
1199         PDEBUG(DBG_IO, "");
1200
1201         mutex_lock(&usbvision->v4l2_lock);
1202         /* Set packet size to 0 */
1203         usbvision->iface_alt = 0;
1204         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1205                                     usbvision->iface_alt);
1206
1207         usbvision_audio_off(usbvision);
1208         usbvision->radio = 0;
1209         usbvision->user--;
1210
1211         if (power_on_at_open) {
1212                 usbvision_set_power_off_timer(usbvision);
1213                 usbvision->initialized = 0;
1214         }
1215
1216         if (usbvision->remove_pending) {
1217                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1218                 usbvision_release(usbvision);
1219         }
1220
1221         mutex_unlock(&usbvision->v4l2_lock);
1222         PDEBUG(DBG_IO, "success");
1223         return err_code;
1224 }
1225
1226 /* Video registration stuff */
1227
1228 /* Video template */
1229 static const struct v4l2_file_operations usbvision_fops = {
1230         .owner             = THIS_MODULE,
1231         .open           = usbvision_v4l2_open,
1232         .release        = usbvision_v4l2_close,
1233         .read           = usbvision_v4l2_read,
1234         .mmap           = usbvision_v4l2_mmap,
1235         .unlocked_ioctl = video_ioctl2,
1236 /*      .poll           = video_poll, */
1237 };
1238
1239 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1240         .vidioc_querycap      = vidioc_querycap,
1241         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1242         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1243         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1244         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1245         .vidioc_reqbufs       = vidioc_reqbufs,
1246         .vidioc_querybuf      = vidioc_querybuf,
1247         .vidioc_qbuf          = vidioc_qbuf,
1248         .vidioc_dqbuf         = vidioc_dqbuf,
1249         .vidioc_s_std         = vidioc_s_std,
1250         .vidioc_enum_input    = vidioc_enum_input,
1251         .vidioc_g_input       = vidioc_g_input,
1252         .vidioc_s_input       = vidioc_s_input,
1253         .vidioc_queryctrl     = vidioc_queryctrl,
1254         .vidioc_g_audio       = vidioc_g_audio,
1255         .vidioc_s_audio       = vidioc_s_audio,
1256         .vidioc_g_ctrl        = vidioc_g_ctrl,
1257         .vidioc_s_ctrl        = vidioc_s_ctrl,
1258         .vidioc_streamon      = vidioc_streamon,
1259         .vidioc_streamoff     = vidioc_streamoff,
1260         .vidioc_g_tuner       = vidioc_g_tuner,
1261         .vidioc_s_tuner       = vidioc_s_tuner,
1262         .vidioc_g_frequency   = vidioc_g_frequency,
1263         .vidioc_s_frequency   = vidioc_s_frequency,
1264 #ifdef CONFIG_VIDEO_ADV_DEBUG
1265         .vidioc_g_register    = vidioc_g_register,
1266         .vidioc_s_register    = vidioc_s_register,
1267 #endif
1268 };
1269
1270 static struct video_device usbvision_video_template = {
1271         .fops           = &usbvision_fops,
1272         .ioctl_ops      = &usbvision_ioctl_ops,
1273         .name           = "usbvision-video",
1274         .release        = video_device_release,
1275         .tvnorms        = USBVISION_NORMS,
1276         .current_norm   = V4L2_STD_PAL
1277 };
1278
1279
1280 /* Radio template */
1281 static const struct v4l2_file_operations usbvision_radio_fops = {
1282         .owner             = THIS_MODULE,
1283         .open           = usbvision_radio_open,
1284         .release        = usbvision_radio_close,
1285         .unlocked_ioctl = video_ioctl2,
1286 };
1287
1288 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1289         .vidioc_querycap      = vidioc_querycap,
1290         .vidioc_enum_input    = vidioc_enum_input,
1291         .vidioc_g_input       = vidioc_g_input,
1292         .vidioc_s_input       = vidioc_s_input,
1293         .vidioc_queryctrl     = vidioc_queryctrl,
1294         .vidioc_g_audio       = vidioc_g_audio,
1295         .vidioc_s_audio       = vidioc_s_audio,
1296         .vidioc_g_ctrl        = vidioc_g_ctrl,
1297         .vidioc_s_ctrl        = vidioc_s_ctrl,
1298         .vidioc_g_tuner       = vidioc_g_tuner,
1299         .vidioc_s_tuner       = vidioc_s_tuner,
1300         .vidioc_g_frequency   = vidioc_g_frequency,
1301         .vidioc_s_frequency   = vidioc_s_frequency,
1302 };
1303
1304 static struct video_device usbvision_radio_template = {
1305         .fops           = &usbvision_radio_fops,
1306         .name           = "usbvision-radio",
1307         .release        = video_device_release,
1308         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1309
1310         .tvnorms              = USBVISION_NORMS,
1311         .current_norm         = V4L2_STD_PAL
1312 };
1313
1314
1315 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1316                                         struct video_device *vdev_template,
1317                                         char *name)
1318 {
1319         struct usb_device *usb_dev = usbvision->dev;
1320         struct video_device *vdev;
1321
1322         if (usb_dev == NULL) {
1323                 dev_err(&usbvision->dev->dev,
1324                         "%s: usbvision->dev is not set\n", __func__);
1325                 return NULL;
1326         }
1327
1328         vdev = video_device_alloc();
1329         if (NULL == vdev)
1330                 return NULL;
1331         *vdev = *vdev_template;
1332         vdev->lock = &usbvision->v4l2_lock;
1333         vdev->v4l2_dev = &usbvision->v4l2_dev;
1334         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1335         video_set_drvdata(vdev, usbvision);
1336         return vdev;
1337 }
1338
1339 /* unregister video4linux devices */
1340 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1341 {
1342         /* Radio Device: */
1343         if (usbvision->rdev) {
1344                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1345                        video_device_node_name(usbvision->rdev));
1346                 if (video_is_registered(usbvision->rdev))
1347                         video_unregister_device(usbvision->rdev);
1348                 else
1349                         video_device_release(usbvision->rdev);
1350                 usbvision->rdev = NULL;
1351         }
1352
1353         /* Video Device: */
1354         if (usbvision->vdev) {
1355                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1356                        video_device_node_name(usbvision->vdev));
1357                 if (video_is_registered(usbvision->vdev))
1358                         video_unregister_device(usbvision->vdev);
1359                 else
1360                         video_device_release(usbvision->vdev);
1361                 usbvision->vdev = NULL;
1362         }
1363 }
1364
1365 /* register video4linux devices */
1366 static int usbvision_register_video(struct usb_usbvision *usbvision)
1367 {
1368         /* Video Device: */
1369         usbvision->vdev = usbvision_vdev_init(usbvision,
1370                                               &usbvision_video_template,
1371                                               "USBVision Video");
1372         if (usbvision->vdev == NULL)
1373                 goto err_exit;
1374         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1375                 goto err_exit;
1376         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1377                usbvision->nr, video_device_node_name(usbvision->vdev));
1378
1379         /* Radio Device: */
1380         if (usbvision_device_data[usbvision->dev_model].radio) {
1381                 /* usbvision has radio */
1382                 usbvision->rdev = usbvision_vdev_init(usbvision,
1383                                                       &usbvision_radio_template,
1384                                                       "USBVision Radio");
1385                 if (usbvision->rdev == NULL)
1386                         goto err_exit;
1387                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1388                         goto err_exit;
1389                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1390                        usbvision->nr, video_device_node_name(usbvision->rdev));
1391         }
1392         /* all done */
1393         return 0;
1394
1395  err_exit:
1396         dev_err(&usbvision->dev->dev,
1397                 "USBVision[%d]: video_register_device() failed\n",
1398                         usbvision->nr);
1399         usbvision_unregister_video(usbvision);
1400         return -1;
1401 }
1402
1403 /*
1404  * usbvision_alloc()
1405  *
1406  * This code allocates the struct usb_usbvision.
1407  * It is filled with default values.
1408  *
1409  * Returns NULL on error, a pointer to usb_usbvision else.
1410  *
1411  */
1412 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1413                                              struct usb_interface *intf)
1414 {
1415         struct usb_usbvision *usbvision;
1416
1417         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1418         if (usbvision == NULL)
1419                 return NULL;
1420
1421         usbvision->dev = dev;
1422         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1423                 goto err_free;
1424
1425         mutex_init(&usbvision->v4l2_lock);
1426
1427         /* prepare control urb for control messages during interrupts */
1428         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1429         if (usbvision->ctrl_urb == NULL)
1430                 goto err_unreg;
1431         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1432
1433         usbvision_init_power_off_timer(usbvision);
1434
1435         return usbvision;
1436
1437 err_unreg:
1438         v4l2_device_unregister(&usbvision->v4l2_dev);
1439 err_free:
1440         kfree(usbvision);
1441         return NULL;
1442 }
1443
1444 /*
1445  * usbvision_release()
1446  *
1447  * This code does final release of struct usb_usbvision. This happens
1448  * after the device is disconnected -and- all clients closed their files.
1449  *
1450  */
1451 static void usbvision_release(struct usb_usbvision *usbvision)
1452 {
1453         PDEBUG(DBG_PROBE, "");
1454
1455         usbvision_reset_power_off_timer(usbvision);
1456
1457         usbvision->initialized = 0;
1458
1459         usbvision_remove_sysfs(usbvision->vdev);
1460         usbvision_unregister_video(usbvision);
1461
1462         usb_free_urb(usbvision->ctrl_urb);
1463
1464         v4l2_device_unregister(&usbvision->v4l2_dev);
1465         kfree(usbvision);
1466
1467         PDEBUG(DBG_PROBE, "success");
1468 }
1469
1470
1471 /*********************** usb interface **********************************/
1472
1473 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1474 {
1475         int model;
1476
1477         if (usbvision == NULL)
1478                 return;
1479
1480         model = usbvision->dev_model;
1481         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1482
1483         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1484                 usbvision->vin_reg2_preset =
1485                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1486         } else {
1487                 usbvision->vin_reg2_preset = 0;
1488         }
1489
1490         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1491
1492         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1493         usbvision->ctl_input = 0;
1494
1495         /* This should be here to make i2c clients to be able to register */
1496         /* first switch off audio */
1497         if (usbvision_device_data[model].audio_channels > 0)
1498                 usbvision_audio_off(usbvision);
1499         if (!power_on_at_open) {
1500                 /* and then power up the noisy tuner */
1501                 usbvision_power_on(usbvision);
1502                 usbvision_i2c_register(usbvision);
1503         }
1504 }
1505
1506 /*
1507  * usbvision_probe()
1508  *
1509  * This procedure queries device descriptor and accepts the interface
1510  * if it looks like USBVISION video device
1511  *
1512  */
1513 static int usbvision_probe(struct usb_interface *intf,
1514                            const struct usb_device_id *devid)
1515 {
1516         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1517         struct usb_interface *uif;
1518         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1519         const struct usb_host_interface *interface;
1520         struct usb_usbvision *usbvision = NULL;
1521         const struct usb_endpoint_descriptor *endpoint;
1522         int model, i;
1523
1524         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1525                                 dev->descriptor.idVendor,
1526                                 dev->descriptor.idProduct, ifnum);
1527
1528         model = devid->driver_info;
1529         if (model < 0 || model >= usbvision_device_data_size) {
1530                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1531                 return -ENODEV;
1532         }
1533         printk(KERN_INFO "%s: %s found\n", __func__,
1534                                 usbvision_device_data[model].model_string);
1535
1536         if (usbvision_device_data[model].interface >= 0)
1537                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1538         else
1539                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1540         endpoint = &interface->endpoint[1].desc;
1541         if (!usb_endpoint_xfer_isoc(endpoint)) {
1542                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1543                     __func__, ifnum);
1544                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1545                     __func__, endpoint->bmAttributes);
1546                 return -ENODEV;
1547         }
1548         if (usb_endpoint_dir_out(endpoint)) {
1549                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1550                     __func__, ifnum);
1551                 return -ENODEV;
1552         }
1553
1554         usbvision = usbvision_alloc(dev, intf);
1555         if (usbvision == NULL) {
1556                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1557                 return -ENOMEM;
1558         }
1559
1560         if (dev->descriptor.bNumConfigurations > 1)
1561                 usbvision->bridge_type = BRIDGE_NT1004;
1562         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1563                 usbvision->bridge_type = BRIDGE_NT1005;
1564         else
1565                 usbvision->bridge_type = BRIDGE_NT1003;
1566         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1567
1568         /* compute alternate max packet sizes */
1569         uif = dev->actconfig->interface[0];
1570
1571         usbvision->num_alt = uif->num_altsetting;
1572         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1573         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1574         if (usbvision->alt_max_pkt_size == NULL) {
1575                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1576                 return -ENOMEM;
1577         }
1578
1579         for (i = 0; i < usbvision->num_alt; i++) {
1580                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1581                                       wMaxPacketSize);
1582                 usbvision->alt_max_pkt_size[i] =
1583                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1584                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1585                        usbvision->alt_max_pkt_size[i]);
1586         }
1587
1588
1589         usbvision->nr = usbvision_nr++;
1590
1591         usbvision->have_tuner = usbvision_device_data[model].tuner;
1592         if (usbvision->have_tuner)
1593                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1594
1595         usbvision->dev_model = model;
1596         usbvision->remove_pending = 0;
1597         usbvision->iface = ifnum;
1598         usbvision->iface_alt = 0;
1599         usbvision->video_endp = endpoint->bEndpointAddress;
1600         usbvision->isoc_packet_size = 0;
1601         usbvision->usb_bandwidth = 0;
1602         usbvision->user = 0;
1603         usbvision->streaming = stream_off;
1604         usbvision_configure_video(usbvision);
1605         usbvision_register_video(usbvision);
1606
1607         usbvision_create_sysfs(usbvision->vdev);
1608
1609         PDEBUG(DBG_PROBE, "success");
1610         return 0;
1611 }
1612
1613
1614 /*
1615  * usbvision_disconnect()
1616  *
1617  * This procedure stops all driver activity, deallocates interface-private
1618  * structure (pointed by 'ptr') and after that driver should be removable
1619  * with no ill consequences.
1620  *
1621  */
1622 static void usbvision_disconnect(struct usb_interface *intf)
1623 {
1624         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1625
1626         PDEBUG(DBG_PROBE, "");
1627
1628         if (usbvision == NULL) {
1629                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1630                 return;
1631         }
1632
1633         mutex_lock(&usbvision->v4l2_lock);
1634
1635         /* At this time we ask to cancel outstanding URBs */
1636         usbvision_stop_isoc(usbvision);
1637
1638         v4l2_device_disconnect(&usbvision->v4l2_dev);
1639
1640         if (usbvision->power) {
1641                 usbvision_i2c_unregister(usbvision);
1642                 usbvision_power_off(usbvision);
1643         }
1644         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1645
1646         usb_put_dev(usbvision->dev);
1647         usbvision->dev = NULL;  /* USB device is no more */
1648
1649         mutex_unlock(&usbvision->v4l2_lock);
1650
1651         if (usbvision->user) {
1652                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1653                        __func__);
1654                 wake_up_interruptible(&usbvision->wait_frame);
1655                 wake_up_interruptible(&usbvision->wait_stream);
1656         } else {
1657                 usbvision_release(usbvision);
1658         }
1659
1660         PDEBUG(DBG_PROBE, "success");
1661 }
1662
1663 static struct usb_driver usbvision_driver = {
1664         .name           = "usbvision",
1665         .id_table       = usbvision_table,
1666         .probe          = usbvision_probe,
1667         .disconnect     = usbvision_disconnect,
1668 };
1669
1670 /*
1671  * usbvision_init()
1672  *
1673  * This code is run to initialize the driver.
1674  *
1675  */
1676 static int __init usbvision_init(void)
1677 {
1678         int err_code;
1679
1680         PDEBUG(DBG_PROBE, "");
1681
1682         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1683         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1684         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1685
1686         /* disable planar mode support unless compression enabled */
1687         if (isoc_mode != ISOC_MODE_COMPRESS) {
1688                 /* FIXME : not the right way to set supported flag */
1689                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1690                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1691         }
1692
1693         err_code = usb_register(&usbvision_driver);
1694
1695         if (err_code == 0) {
1696                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1697                 PDEBUG(DBG_PROBE, "success");
1698         }
1699         return err_code;
1700 }
1701
1702 static void __exit usbvision_exit(void)
1703 {
1704         PDEBUG(DBG_PROBE, "");
1705
1706         usb_deregister(&usbvision_driver);
1707         PDEBUG(DBG_PROBE, "success");
1708 }
1709
1710 module_init(usbvision_init);
1711 module_exit(usbvision_exit);
1712
1713 /*
1714  * Overrides for Emacs so that we follow Linus's tabbing style.
1715  * ---------------------------------------------------------------------------
1716  * Local variables:
1717  * c-basic-offset: 8
1718  * End:
1719  */