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                 return 0;
 450         }
 451         mutex_unlock(&usbvision->v4l2_lock);
 452
 453         PDEBUG(DBG_IO, "success");
 454         return 0;
 455 }
 456
 457
 458 /*
 459  * usbvision_ioctl()
 460  *
 461  * This is part of Video 4 Linux API. The procedure handles ioctl() calls.
 462  *
 463  */
 464 #ifdef CONFIG_VIDEO_ADV_DEBUG
 465 static int vidioc_g_register(struct file *file, void *priv,
 466                                 struct v4l2_dbg_register *reg)
 467 {
 468         struct usb_usbvision *usbvision = video_drvdata(file);
 469         int err_code;
 470
 471         /* NT100x has a 8-bit register space */
 472         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
 473         if (err_code < 0) {
 474                 dev_err(&usbvision->vdev->dev,
 475                         "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
 476                                 __func__, err_code);
 477                 return err_code;
 478         }
 479         reg->val = err_code;
 480         reg->size = 1;
 481         return 0;
 482 }
 483
 484 static int vidioc_s_register(struct file *file, void *priv,
 485                                 const struct v4l2_dbg_register *reg)
 486 {
 487         struct usb_usbvision *usbvision = video_drvdata(file);
 488         int err_code;
 489
 490         /* NT100x has a 8-bit register space */
 491         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
 492         if (err_code < 0) {
 493                 dev_err(&usbvision->vdev->dev,
 494                         "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
 495                                 __func__, err_code);
 496                 return err_code;
 497         }
 498         return 0;
 499 }
 500 #endif
 501
 502 static int vidioc_querycap(struct file *file, void  *priv,
 503                                         struct v4l2_capability *vc)
 504 {
 505         struct usb_usbvision *usbvision = video_drvdata(file);
 506
 507         strlcpy(vc->driver, "USBVision", sizeof(vc->driver));
 508         strlcpy(vc->card,
 509                 usbvision_device_data[usbvision->dev_model].model_string,
 510                 sizeof(vc->card));
 511         usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info));
 512         vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
 513                 V4L2_CAP_AUDIO |
 514                 V4L2_CAP_READWRITE |
 515                 V4L2_CAP_STREAMING |
 516                 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0);
 517         return 0;
 518 }
 519
 520 static int vidioc_enum_input(struct file *file, void *priv,
 521                                 struct v4l2_input *vi)
 522 {
 523         struct usb_usbvision *usbvision = video_drvdata(file);
 524         int chan;
 525
 526         if (vi->index >= usbvision->video_inputs)
 527                 return -EINVAL;
 528         if (usbvision->have_tuner)
 529                 chan = vi->index;
 530         else
 531                 chan = vi->index + 1; /* skip Television string*/
 532
 533         /* Determine the requested input characteristics
 534            specific for each usbvision card model */
 535         switch (chan) {
 536         case 0:
 537                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) {
 538                         strcpy(vi->name, "White Video Input");
 539                 } else {
 540                         strcpy(vi->name, "Television");
 541                         vi->type = V4L2_INPUT_TYPE_TUNER;
 542                         vi->audioset = 1;
 543                         vi->tuner = chan;
 544                         vi->std = USBVISION_NORMS;
 545                 }
 546                 break;
 547         case 1:
 548                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 549                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 550                         strcpy(vi->name, "Green Video Input");
 551                 else
 552                         strcpy(vi->name, "Composite Video Input");
 553                 vi->std = V4L2_STD_PAL;
 554                 break;
 555         case 2:
 556                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 557                 if (usbvision_device_data[usbvision->dev_model].video_channels == 4)
 558                         strcpy(vi->name, "Yellow Video Input");
 559                 else
 560                         strcpy(vi->name, "S-Video Input");
 561                 vi->std = V4L2_STD_PAL;
 562                 break;
 563         case 3:
 564                 vi->type = V4L2_INPUT_TYPE_CAMERA;
 565                 strcpy(vi->name, "Red Video Input");
 566                 vi->std = V4L2_STD_PAL;
 567                 break;
 568         }
 569         return 0;
 570 }
 571
 572 static int vidioc_g_input(struct file *file, void *priv, unsigned int *input)
 573 {
 574         struct usb_usbvision *usbvision = video_drvdata(file);
 575
 576         *input = usbvision->ctl_input;
 577         return 0;
 578 }
 579
 580 static int vidioc_s_input(struct file *file, void *priv, unsigned int input)
 581 {
 582         struct usb_usbvision *usbvision = video_drvdata(file);
 583
 584         if (input >= usbvision->video_inputs)
 585                 return -EINVAL;
 586
 587         usbvision_muxsel(usbvision, input);
 588         usbvision_set_input(usbvision);
 589         usbvision_set_output(usbvision,
 590                              usbvision->curwidth,
 591                              usbvision->curheight);
 592         return 0;
 593 }
 594
 595 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
 596 {
 597         struct usb_usbvision *usbvision = video_drvdata(file);
 598
 599         usbvision->tvnorm_id = id;
 600
 601         call_all(usbvision, video, s_std, usbvision->tvnorm_id);
 602         /* propagate the change to the decoder */
 603         usbvision_muxsel(usbvision, usbvision->ctl_input);
 604
 605         return 0;
 606 }
 607
 608 static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
 609 {
 610         struct usb_usbvision *usbvision = video_drvdata(file);
 611
 612         *id = usbvision->tvnorm_id;
 613         return 0;
 614 }
 615
 616 static int vidioc_g_tuner(struct file *file, void *priv,
 617                                 struct v4l2_tuner *vt)
 618 {
 619         struct usb_usbvision *usbvision = video_drvdata(file);
 620
 621         if (!usbvision->have_tuner || vt->index)        /* Only tuner 0 */
 622                 return -EINVAL;
 623         if (usbvision->radio) {
 624                 strcpy(vt->name, "Radio");
 625                 vt->type = V4L2_TUNER_RADIO;
 626         } else {
 627                 strcpy(vt->name, "Television");
 628         }
 629         /* Let clients fill in the remainder of this struct */
 630         call_all(usbvision, tuner, g_tuner, vt);
 631
 632         return 0;
 633 }
 634
 635 static int vidioc_s_tuner(struct file *file, void *priv,
 636                                 const struct v4l2_tuner *vt)
 637 {
 638         struct usb_usbvision *usbvision = video_drvdata(file);
 639
 640         /* Only no or one tuner for now */
 641         if (!usbvision->have_tuner || vt->index)
 642                 return -EINVAL;
 643         /* let clients handle this */
 644         call_all(usbvision, tuner, s_tuner, vt);
 645
 646         return 0;
 647 }
 648
 649 static int vidioc_g_frequency(struct file *file, void *priv,
 650                                 struct v4l2_frequency *freq)
 651 {
 652         struct usb_usbvision *usbvision = video_drvdata(file);
 653
 654         freq->tuner = 0; /* Only one tuner */
 655         if (usbvision->radio)
 656                 freq->type = V4L2_TUNER_RADIO;
 657         else
 658                 freq->type = V4L2_TUNER_ANALOG_TV;
 659         freq->frequency = usbvision->freq;
 660
 661         return 0;
 662 }
 663
 664 static int vidioc_s_frequency(struct file *file, void *priv,
 665                                 const struct v4l2_frequency *freq)
 666 {
 667         struct usb_usbvision *usbvision = video_drvdata(file);
 668
 669         /* Only no or one tuner for now */
 670         if (!usbvision->have_tuner || freq->tuner)
 671                 return -EINVAL;
 672
 673         usbvision->freq = freq->frequency;
 674         call_all(usbvision, tuner, s_frequency, freq);
 675
 676         return 0;
 677 }
 678
 679 static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 680 {
 681         struct usb_usbvision *usbvision = video_drvdata(file);
 682
 683         if (usbvision->radio)
 684                 strcpy(a->name, "Radio");
 685         else
 686                 strcpy(a->name, "TV");
 687
 688         return 0;
 689 }
 690
 691 static int vidioc_s_audio(struct file *file, void *fh,
 692                           const struct v4l2_audio *a)
 693 {
 694         if (a->index)
 695                 return -EINVAL;
 696         return 0;
 697 }
 698
 699 static int vidioc_queryctrl(struct file *file, void *priv,
 700                             struct v4l2_queryctrl *ctrl)
 701 {
 702         struct usb_usbvision *usbvision = video_drvdata(file);
 703
 704         call_all(usbvision, core, queryctrl, ctrl);
 705
 706         if (!ctrl->type)
 707                 return -EINVAL;
 708
 709         return 0;
 710 }
 711
 712 static int vidioc_g_ctrl(struct file *file, void *priv,
 713                                 struct v4l2_control *ctrl)
 714 {
 715         struct usb_usbvision *usbvision = video_drvdata(file);
 716
 717         call_all(usbvision, core, g_ctrl, ctrl);
 718         return 0;
 719 }
 720
 721 static int vidioc_s_ctrl(struct file *file, void *priv,
 722                                 struct v4l2_control *ctrl)
 723 {
 724         struct usb_usbvision *usbvision = video_drvdata(file);
 725
 726         call_all(usbvision, core, s_ctrl, ctrl);
 727         return 0;
 728 }
 729
 730 static int vidioc_reqbufs(struct file *file,
 731                            void *priv, struct v4l2_requestbuffers *vr)
 732 {
 733         struct usb_usbvision *usbvision = video_drvdata(file);
 734         int ret;
 735
 736         RESTRICT_TO_RANGE(vr->count, 1, USBVISION_NUMFRAMES);
 737
 738         /* Check input validity:
 739            the user must do a VIDEO CAPTURE and MMAP method. */
 740         if (vr->memory != V4L2_MEMORY_MMAP)
 741                 return -EINVAL;
 742
 743         if (usbvision->streaming == stream_on) {
 744                 ret = usbvision_stream_interrupt(usbvision);
 745                 if (ret)
 746                         return ret;
 747         }
 748
 749         usbvision_frames_free(usbvision);
 750         usbvision_empty_framequeues(usbvision);
 751         vr->count = usbvision_frames_alloc(usbvision, vr->count);
 752
 753         usbvision->cur_frame = NULL;
 754
 755         return 0;
 756 }
 757
 758 static int vidioc_querybuf(struct file *file,
 759                             void *priv, struct v4l2_buffer *vb)
 760 {
 761         struct usb_usbvision *usbvision = video_drvdata(file);
 762         struct usbvision_frame *frame;
 763
 764         /* FIXME : must control
 765            that buffers are mapped (VIDIOC_REQBUFS has been called) */
 766         if (vb->index >= usbvision->num_frames)
 767                 return -EINVAL;
 768         /* Updating the corresponding frame state */
 769         vb->flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 770         frame = &usbvision->frame[vb->index];
 771         if (frame->grabstate >= frame_state_ready)
 772                 vb->flags |= V4L2_BUF_FLAG_QUEUED;
 773         if (frame->grabstate >= frame_state_done)
 774                 vb->flags |= V4L2_BUF_FLAG_DONE;
 775         if (frame->grabstate == frame_state_unused)
 776                 vb->flags |= V4L2_BUF_FLAG_MAPPED;
 777         vb->memory = V4L2_MEMORY_MMAP;
 778
 779         vb->m.offset = vb->index * PAGE_ALIGN(usbvision->max_frame_size);
 780
 781         vb->memory = V4L2_MEMORY_MMAP;
 782         vb->field = V4L2_FIELD_NONE;
 783         vb->length = usbvision->curwidth *
 784                 usbvision->curheight *
 785                 usbvision->palette.bytes_per_pixel;
 786         vb->timestamp = usbvision->frame[vb->index].timestamp;
 787         vb->sequence = usbvision->frame[vb->index].sequence;
 788         return 0;
 789 }
 790
 791 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 792 {
 793         struct usb_usbvision *usbvision = video_drvdata(file);
 794         struct usbvision_frame *frame;
 795         unsigned long lock_flags;
 796
 797         /* FIXME : works only on VIDEO_CAPTURE MODE, MMAP. */
 798         if (vb->index >= usbvision->num_frames)
 799                 return -EINVAL;
 800
 801         frame = &usbvision->frame[vb->index];
 802
 803         if (frame->grabstate != frame_state_unused)
 804                 return -EAGAIN;
 805
 806         /* Mark it as ready and enqueue frame */
 807         frame->grabstate = frame_state_ready;
 808         frame->scanstate = scan_state_scanning;
 809         frame->scanlength = 0;  /* Accumulated in usbvision_parse_data() */
 810
 811         vb->flags &= ~V4L2_BUF_FLAG_DONE;
 812
 813         /* set v4l2_format index */
 814         frame->v4l2_format = usbvision->palette;
 815
 816         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 817         list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
 818         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 819
 820         return 0;
 821 }
 822
 823 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *vb)
 824 {
 825         struct usb_usbvision *usbvision = video_drvdata(file);
 826         int ret;
 827         struct usbvision_frame *f;
 828         unsigned long lock_flags;
 829
 830         if (list_empty(&(usbvision->outqueue))) {
 831                 if (usbvision->streaming == stream_idle)
 832                         return -EINVAL;
 833                 ret = wait_event_interruptible
 834                         (usbvision->wait_frame,
 835                          !list_empty(&(usbvision->outqueue)));
 836                 if (ret)
 837                         return ret;
 838         }
 839
 840         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
 841         f = list_entry(usbvision->outqueue.next,
 842                        struct usbvision_frame, frame);
 843         list_del(usbvision->outqueue.next);
 844         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
 845
 846         f->grabstate = frame_state_unused;
 847
 848         vb->memory = V4L2_MEMORY_MMAP;
 849         vb->flags = V4L2_BUF_FLAG_MAPPED |
 850                 V4L2_BUF_FLAG_QUEUED |
 851                 V4L2_BUF_FLAG_DONE |
 852                 V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 853         vb->index = f->index;
 854         vb->sequence = f->sequence;
 855         vb->timestamp = f->timestamp;
 856         vb->field = V4L2_FIELD_NONE;
 857         vb->bytesused = f->scanlength;
 858
 859         return 0;
 860 }
 861
 862 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 863 {
 864         struct usb_usbvision *usbvision = video_drvdata(file);
 865
 866         usbvision->streaming = stream_on;
 867         call_all(usbvision, video, s_stream, 1);
 868
 869         return 0;
 870 }
 871
 872 static int vidioc_streamoff(struct file *file,
 873                             void *priv, enum v4l2_buf_type type)
 874 {
 875         struct usb_usbvision *usbvision = video_drvdata(file);
 876
 877         if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 878                 return -EINVAL;
 879
 880         if (usbvision->streaming == stream_on) {
 881                 usbvision_stream_interrupt(usbvision);
 882                 /* Stop all video streamings */
 883                 call_all(usbvision, video, s_stream, 0);
 884         }
 885         usbvision_empty_framequeues(usbvision);
 886
 887         return 0;
 888 }
 889
 890 static int vidioc_enum_fmt_vid_cap(struct file *file, void  *priv,
 891                                         struct v4l2_fmtdesc *vfd)
 892 {
 893         if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1)
 894                 return -EINVAL;
 895         strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc);
 896         vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
 897         return 0;
 898 }
 899
 900 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 901                                         struct v4l2_format *vf)
 902 {
 903         struct usb_usbvision *usbvision = video_drvdata(file);
 904         vf->fmt.pix.width = usbvision->curwidth;
 905         vf->fmt.pix.height = usbvision->curheight;
 906         vf->fmt.pix.pixelformat = usbvision->palette.format;
 907         vf->fmt.pix.bytesperline =
 908                 usbvision->curwidth * usbvision->palette.bytes_per_pixel;
 909         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight;
 910         vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
 911         vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
 912
 913         return 0;
 914 }
 915
 916 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 917                                struct v4l2_format *vf)
 918 {
 919         struct usb_usbvision *usbvision = video_drvdata(file);
 920         int format_idx;
 921
 922         /* Find requested format in available ones */
 923         for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) {
 924                 if (vf->fmt.pix.pixelformat ==
 925                    usbvision_v4l2_format[format_idx].format) {
 926                         usbvision->palette = usbvision_v4l2_format[format_idx];
 927                         break;
 928                 }
 929         }
 930         /* robustness */
 931         if (format_idx == USBVISION_SUPPORTED_PALETTES)
 932                 return -EINVAL;
 933         RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
 934         RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 935
 936         vf->fmt.pix.bytesperline = vf->fmt.pix.width*
 937                 usbvision->palette.bytes_per_pixel;
 938         vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height;
 939
 940         return 0;
 941 }
 942
 943 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 944                                struct v4l2_format *vf)
 945 {
 946         struct usb_usbvision *usbvision = video_drvdata(file);
 947         int ret;
 948
 949         ret = vidioc_try_fmt_vid_cap(file, priv, vf);
 950         if (ret)
 951                 return ret;
 952
 953         /* stop io in case it is already in progress */
 954         if (usbvision->streaming == stream_on) {
 955                 ret = usbvision_stream_interrupt(usbvision);
 956                 if (ret)
 957                         return ret;
 958         }
 959         usbvision_frames_free(usbvision);
 960         usbvision_empty_framequeues(usbvision);
 961
 962         usbvision->cur_frame = NULL;
 963
 964         /* by now we are committed to the new data... */
 965         usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
 966
 967         return 0;
 968 }
 969
 970 static ssize_t usbvision_read(struct file *file, char __user *buf,
 971                       size_t count, loff_t *ppos)
 972 {
 973         struct usb_usbvision *usbvision = video_drvdata(file);
 974         int noblock = file->f_flags & O_NONBLOCK;
 975         unsigned long lock_flags;
 976         int ret, i;
 977         struct usbvision_frame *frame;
 978
 979         PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__,
 980                (unsigned long)count, noblock);
 981
 982         if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
 983                 return -EFAULT;
 984
 985         /* This entry point is compatible with the mmap routines
 986            so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF
 987            to get frames or call read on the device. */
 988         if (!usbvision->num_frames) {
 989                 /* First, allocate some frames to work with
 990                    if this has not been done with VIDIOC_REQBUF */
 991                 usbvision_frames_free(usbvision);
 992                 usbvision_empty_framequeues(usbvision);
 993                 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES);
 994         }
 995
 996         if (usbvision->streaming != stream_on) {
 997                 /* no stream is running, make it running ! */
 998                 usbvision->streaming = stream_on;
 999                 call_all(usbvision, video, s_stream, 1);
1000         }
1001
1002         /* Then, enqueue as many frames as possible
1003            (like a user of VIDIOC_QBUF would do) */
1004         for (i = 0; i < usbvision->num_frames; i++) {
1005                 frame = &usbvision->frame[i];
1006                 if (frame->grabstate == frame_state_unused) {
1007                         /* Mark it as ready and enqueue frame */
1008                         frame->grabstate = frame_state_ready;
1009                         frame->scanstate = scan_state_scanning;
1010                         /* Accumulated in usbvision_parse_data() */
1011                         frame->scanlength = 0;
1012
1013                         /* set v4l2_format index */
1014                         frame->v4l2_format = usbvision->palette;
1015
1016                         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1017                         list_add_tail(&frame->frame, &usbvision->inqueue);
1018                         spin_unlock_irqrestore(&usbvision->queue_lock,
1019                                                lock_flags);
1020                 }
1021         }
1022
1023         /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
1024         if (list_empty(&(usbvision->outqueue))) {
1025                 if (noblock)
1026                         return -EAGAIN;
1027
1028                 ret = wait_event_interruptible
1029                         (usbvision->wait_frame,
1030                          !list_empty(&(usbvision->outqueue)));
1031                 if (ret)
1032                         return ret;
1033         }
1034
1035         spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
1036         frame = list_entry(usbvision->outqueue.next,
1037                            struct usbvision_frame, frame);
1038         list_del(usbvision->outqueue.next);
1039         spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
1040
1041         /* An error returns an empty frame */
1042         if (frame->grabstate == frame_state_error) {
1043                 frame->bytes_read = 0;
1044                 return 0;
1045         }
1046
1047         PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld",
1048                __func__,
1049                frame->index, frame->bytes_read, frame->scanlength);
1050
1051         /* copy bytes to user space; we allow for partials reads */
1052         if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
1053                 count = frame->scanlength - frame->bytes_read;
1054
1055         if (copy_to_user(buf, frame->data + frame->bytes_read, count))
1056                 return -EFAULT;
1057
1058         frame->bytes_read += count;
1059         PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld",
1060                __func__,
1061                (unsigned long)count, frame->bytes_read);
1062
1063         /* For now, forget the frame if it has not been read in one shot. */
1064 /*      if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */
1065                 frame->bytes_read = 0;
1066
1067                 /* Mark it as available to be used again. */
1068                 frame->grabstate = frame_state_unused;
1069 /*      } */
1070
1071         return count;
1072 }
1073
1074 static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf,
1075                       size_t count, loff_t *ppos)
1076 {
1077         struct usb_usbvision *usbvision = video_drvdata(file);
1078         int res;
1079
1080         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1081                 return -ERESTARTSYS;
1082         res = usbvision_read(file, buf, count, ppos);
1083         mutex_unlock(&usbvision->v4l2_lock);
1084         return res;
1085 }
1086
1087 static int usbvision_mmap(struct file *file, struct vm_area_struct *vma)
1088 {
1089         unsigned long size = vma->vm_end - vma->vm_start,
1090                 start = vma->vm_start;
1091         void *pos;
1092         u32 i;
1093         struct usb_usbvision *usbvision = video_drvdata(file);
1094
1095         PDEBUG(DBG_MMAP, "mmap");
1096
1097         if (!USBVISION_IS_OPERATIONAL(usbvision))
1098                 return -EFAULT;
1099
1100         if (!(vma->vm_flags & VM_WRITE) ||
1101             size != PAGE_ALIGN(usbvision->max_frame_size)) {
1102                 return -EINVAL;
1103         }
1104
1105         for (i = 0; i < usbvision->num_frames; i++) {
1106                 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) ==
1107                     vma->vm_pgoff)
1108                         break;
1109         }
1110         if (i == usbvision->num_frames) {
1111                 PDEBUG(DBG_MMAP,
1112                        "mmap: user supplied mapping address is out of range");
1113                 return -EINVAL;
1114         }
1115
1116         /* VM_IO is eventually going to replace PageReserved altogether */
1117         vma->vm_flags |= VM_IO | VM_DONTEXPAND | VM_DONTDUMP;
1118
1119         pos = usbvision->frame[i].data;
1120         while (size > 0) {
1121                 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
1122                         PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed");
1123                         return -EAGAIN;
1124                 }
1125                 start += PAGE_SIZE;
1126                 pos += PAGE_SIZE;
1127                 size -= PAGE_SIZE;
1128         }
1129
1130         return 0;
1131 }
1132
1133 static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1134 {
1135         struct usb_usbvision *usbvision = video_drvdata(file);
1136         int res;
1137
1138         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1139                 return -ERESTARTSYS;
1140         res = usbvision_mmap(file, vma);
1141         mutex_unlock(&usbvision->v4l2_lock);
1142         return res;
1143 }
1144
1145 /*
1146  * Here comes the stuff for radio on usbvision based devices
1147  *
1148  */
1149 static int usbvision_radio_open(struct file *file)
1150 {
1151         struct usb_usbvision *usbvision = video_drvdata(file);
1152         int err_code = 0;
1153
1154         PDEBUG(DBG_IO, "%s:", __func__);
1155
1156         if (mutex_lock_interruptible(&usbvision->v4l2_lock))
1157                 return -ERESTARTSYS;
1158         if (usbvision->user) {
1159                 dev_err(&usbvision->rdev->dev,
1160                         "%s: Someone tried to open an already opened USBVision Radio!\n",
1161                                 __func__);
1162                 err_code = -EBUSY;
1163         } else {
1164                 if (power_on_at_open) {
1165                         usbvision_reset_power_off_timer(usbvision);
1166                         if (usbvision->power == 0) {
1167                                 usbvision_power_on(usbvision);
1168                                 usbvision_i2c_register(usbvision);
1169                         }
1170                 }
1171
1172                 /* Alternate interface 1 is is the biggest frame size */
1173                 err_code = usbvision_set_alternate(usbvision);
1174                 if (err_code < 0) {
1175                         usbvision->last_error = err_code;
1176                         err_code = -EBUSY;
1177                         goto out;
1178                 }
1179
1180                 /* If so far no errors then we shall start the radio */
1181                 usbvision->radio = 1;
1182                 call_all(usbvision, tuner, s_radio);
1183                 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO);
1184                 usbvision->user++;
1185         }
1186
1187         if (err_code) {
1188                 if (power_on_at_open) {
1189                         usbvision_i2c_unregister(usbvision);
1190                         usbvision_power_off(usbvision);
1191                         usbvision->initialized = 0;
1192                 }
1193         }
1194 out:
1195         mutex_unlock(&usbvision->v4l2_lock);
1196         return err_code;
1197 }
1198
1199
1200 static int usbvision_radio_close(struct file *file)
1201 {
1202         struct usb_usbvision *usbvision = video_drvdata(file);
1203         int err_code = 0;
1204
1205         PDEBUG(DBG_IO, "");
1206
1207         mutex_lock(&usbvision->v4l2_lock);
1208         /* Set packet size to 0 */
1209         usbvision->iface_alt = 0;
1210         err_code = usb_set_interface(usbvision->dev, usbvision->iface,
1211                                     usbvision->iface_alt);
1212
1213         usbvision_audio_off(usbvision);
1214         usbvision->radio = 0;
1215         usbvision->user--;
1216
1217         if (power_on_at_open) {
1218                 usbvision_set_power_off_timer(usbvision);
1219                 usbvision->initialized = 0;
1220         }
1221
1222         if (usbvision->remove_pending) {
1223                 printk(KERN_INFO "%s: Final disconnect\n", __func__);
1224                 usbvision_release(usbvision);
1225                 return err_code;
1226         }
1227
1228         mutex_unlock(&usbvision->v4l2_lock);
1229         PDEBUG(DBG_IO, "success");
1230         return err_code;
1231 }
1232
1233 /* Video registration stuff */
1234
1235 /* Video template */
1236 static const struct v4l2_file_operations usbvision_fops = {
1237         .owner             = THIS_MODULE,
1238         .open           = usbvision_v4l2_open,
1239         .release        = usbvision_v4l2_close,
1240         .read           = usbvision_v4l2_read,
1241         .mmap           = usbvision_v4l2_mmap,
1242         .unlocked_ioctl = video_ioctl2,
1243 /*      .poll           = video_poll, */
1244 };
1245
1246 static const struct v4l2_ioctl_ops usbvision_ioctl_ops = {
1247         .vidioc_querycap      = vidioc_querycap,
1248         .vidioc_enum_fmt_vid_cap  = vidioc_enum_fmt_vid_cap,
1249         .vidioc_g_fmt_vid_cap     = vidioc_g_fmt_vid_cap,
1250         .vidioc_try_fmt_vid_cap   = vidioc_try_fmt_vid_cap,
1251         .vidioc_s_fmt_vid_cap     = vidioc_s_fmt_vid_cap,
1252         .vidioc_reqbufs       = vidioc_reqbufs,
1253         .vidioc_querybuf      = vidioc_querybuf,
1254         .vidioc_qbuf          = vidioc_qbuf,
1255         .vidioc_dqbuf         = vidioc_dqbuf,
1256         .vidioc_s_std         = vidioc_s_std,
1257         .vidioc_g_std         = vidioc_g_std,
1258         .vidioc_enum_input    = vidioc_enum_input,
1259         .vidioc_g_input       = vidioc_g_input,
1260         .vidioc_s_input       = vidioc_s_input,
1261         .vidioc_queryctrl     = vidioc_queryctrl,
1262         .vidioc_g_audio       = vidioc_g_audio,
1263         .vidioc_s_audio       = vidioc_s_audio,
1264         .vidioc_g_ctrl        = vidioc_g_ctrl,
1265         .vidioc_s_ctrl        = vidioc_s_ctrl,
1266         .vidioc_streamon      = vidioc_streamon,
1267         .vidioc_streamoff     = vidioc_streamoff,
1268         .vidioc_g_tuner       = vidioc_g_tuner,
1269         .vidioc_s_tuner       = vidioc_s_tuner,
1270         .vidioc_g_frequency   = vidioc_g_frequency,
1271         .vidioc_s_frequency   = vidioc_s_frequency,
1272 #ifdef CONFIG_VIDEO_ADV_DEBUG
1273         .vidioc_g_register    = vidioc_g_register,
1274         .vidioc_s_register    = vidioc_s_register,
1275 #endif
1276 };
1277
1278 static struct video_device usbvision_video_template = {
1279         .fops           = &usbvision_fops,
1280         .ioctl_ops      = &usbvision_ioctl_ops,
1281         .name           = "usbvision-video",
1282         .release        = video_device_release,
1283         .tvnorms        = USBVISION_NORMS,
1284 };
1285
1286
1287 /* Radio template */
1288 static const struct v4l2_file_operations usbvision_radio_fops = {
1289         .owner             = THIS_MODULE,
1290         .open           = usbvision_radio_open,
1291         .release        = usbvision_radio_close,
1292         .unlocked_ioctl = video_ioctl2,
1293 };
1294
1295 static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
1296         .vidioc_querycap      = vidioc_querycap,
1297         .vidioc_enum_input    = vidioc_enum_input,
1298         .vidioc_g_input       = vidioc_g_input,
1299         .vidioc_s_input       = vidioc_s_input,
1300         .vidioc_queryctrl     = vidioc_queryctrl,
1301         .vidioc_g_audio       = vidioc_g_audio,
1302         .vidioc_s_audio       = vidioc_s_audio,
1303         .vidioc_g_ctrl        = vidioc_g_ctrl,
1304         .vidioc_s_ctrl        = vidioc_s_ctrl,
1305         .vidioc_g_tuner       = vidioc_g_tuner,
1306         .vidioc_s_tuner       = vidioc_s_tuner,
1307         .vidioc_g_frequency   = vidioc_g_frequency,
1308         .vidioc_s_frequency   = vidioc_s_frequency,
1309 };
1310
1311 static struct video_device usbvision_radio_template = {
1312         .fops           = &usbvision_radio_fops,
1313         .name           = "usbvision-radio",
1314         .release        = video_device_release,
1315         .ioctl_ops      = &usbvision_radio_ioctl_ops,
1316 };
1317
1318
1319 static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
1320                                         struct video_device *vdev_template,
1321                                         char *name)
1322 {
1323         struct usb_device *usb_dev = usbvision->dev;
1324         struct video_device *vdev;
1325
1326         if (usb_dev == NULL) {
1327                 dev_err(&usbvision->dev->dev,
1328                         "%s: usbvision->dev is not set\n", __func__);
1329                 return NULL;
1330         }
1331
1332         vdev = video_device_alloc();
1333         if (NULL == vdev)
1334                 return NULL;
1335         *vdev = *vdev_template;
1336         vdev->lock = &usbvision->v4l2_lock;
1337         vdev->v4l2_dev = &usbvision->v4l2_dev;
1338         snprintf(vdev->name, sizeof(vdev->name), "%s", name);
1339         video_set_drvdata(vdev, usbvision);
1340         return vdev;
1341 }
1342
1343 /* unregister video4linux devices */
1344 static void usbvision_unregister_video(struct usb_usbvision *usbvision)
1345 {
1346         /* Radio Device: */
1347         if (usbvision->rdev) {
1348                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1349                        video_device_node_name(usbvision->rdev));
1350                 if (video_is_registered(usbvision->rdev))
1351                         video_unregister_device(usbvision->rdev);
1352                 else
1353                         video_device_release(usbvision->rdev);
1354                 usbvision->rdev = NULL;
1355         }
1356
1357         /* Video Device: */
1358         if (usbvision->vdev) {
1359                 PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
1360                        video_device_node_name(usbvision->vdev));
1361                 if (video_is_registered(usbvision->vdev))
1362                         video_unregister_device(usbvision->vdev);
1363                 else
1364                         video_device_release(usbvision->vdev);
1365                 usbvision->vdev = NULL;
1366         }
1367 }
1368
1369 /* register video4linux devices */
1370 static int usbvision_register_video(struct usb_usbvision *usbvision)
1371 {
1372         /* Video Device: */
1373         usbvision->vdev = usbvision_vdev_init(usbvision,
1374                                               &usbvision_video_template,
1375                                               "USBVision Video");
1376         if (usbvision->vdev == NULL)
1377                 goto err_exit;
1378         if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
1379                 goto err_exit;
1380         printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
1381                usbvision->nr, video_device_node_name(usbvision->vdev));
1382
1383         /* Radio Device: */
1384         if (usbvision_device_data[usbvision->dev_model].radio) {
1385                 /* usbvision has radio */
1386                 usbvision->rdev = usbvision_vdev_init(usbvision,
1387                                                       &usbvision_radio_template,
1388                                                       "USBVision Radio");
1389                 if (usbvision->rdev == NULL)
1390                         goto err_exit;
1391                 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
1392                         goto err_exit;
1393                 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
1394                        usbvision->nr, video_device_node_name(usbvision->rdev));
1395         }
1396         /* all done */
1397         return 0;
1398
1399  err_exit:
1400         dev_err(&usbvision->dev->dev,
1401                 "USBVision[%d]: video_register_device() failed\n",
1402                         usbvision->nr);
1403         usbvision_unregister_video(usbvision);
1404         return -1;
1405 }
1406
1407 /*
1408  * usbvision_alloc()
1409  *
1410  * This code allocates the struct usb_usbvision.
1411  * It is filled with default values.
1412  *
1413  * Returns NULL on error, a pointer to usb_usbvision else.
1414  *
1415  */
1416 static struct usb_usbvision *usbvision_alloc(struct usb_device *dev,
1417                                              struct usb_interface *intf)
1418 {
1419         struct usb_usbvision *usbvision;
1420
1421         usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL);
1422         if (usbvision == NULL)
1423                 return NULL;
1424
1425         usbvision->dev = dev;
1426         if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev))
1427                 goto err_free;
1428
1429         mutex_init(&usbvision->v4l2_lock);
1430
1431         /* prepare control urb for control messages during interrupts */
1432         usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL);
1433         if (usbvision->ctrl_urb == NULL)
1434                 goto err_unreg;
1435         init_waitqueue_head(&usbvision->ctrl_urb_wq);
1436
1437         usbvision_init_power_off_timer(usbvision);
1438
1439         return usbvision;
1440
1441 err_unreg:
1442         v4l2_device_unregister(&usbvision->v4l2_dev);
1443 err_free:
1444         kfree(usbvision);
1445         return NULL;
1446 }
1447
1448 /*
1449  * usbvision_release()
1450  *
1451  * This code does final release of struct usb_usbvision. This happens
1452  * after the device is disconnected -and- all clients closed their files.
1453  *
1454  */
1455 static void usbvision_release(struct usb_usbvision *usbvision)
1456 {
1457         PDEBUG(DBG_PROBE, "");
1458
1459         usbvision_reset_power_off_timer(usbvision);
1460
1461         usbvision->initialized = 0;
1462
1463         usbvision_remove_sysfs(usbvision->vdev);
1464         usbvision_unregister_video(usbvision);
1465         kfree(usbvision->alt_max_pkt_size);
1466
1467         usb_free_urb(usbvision->ctrl_urb);
1468
1469         v4l2_device_unregister(&usbvision->v4l2_dev);
1470         kfree(usbvision);
1471
1472         PDEBUG(DBG_PROBE, "success");
1473 }
1474
1475
1476 /*********************** usb interface **********************************/
1477
1478 static void usbvision_configure_video(struct usb_usbvision *usbvision)
1479 {
1480         int model;
1481
1482         if (usbvision == NULL)
1483                 return;
1484
1485         model = usbvision->dev_model;
1486         usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */
1487
1488         if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) {
1489                 usbvision->vin_reg2_preset =
1490                         usbvision_device_data[usbvision->dev_model].vin_reg2;
1491         } else {
1492                 usbvision->vin_reg2_preset = 0;
1493         }
1494
1495         usbvision->tvnorm_id = usbvision_device_data[model].video_norm;
1496
1497         usbvision->video_inputs = usbvision_device_data[model].video_channels;
1498         usbvision->ctl_input = 0;
1499
1500         /* This should be here to make i2c clients to be able to register */
1501         /* first switch off audio */
1502         if (usbvision_device_data[model].audio_channels > 0)
1503                 usbvision_audio_off(usbvision);
1504         if (!power_on_at_open) {
1505                 /* and then power up the noisy tuner */
1506                 usbvision_power_on(usbvision);
1507                 usbvision_i2c_register(usbvision);
1508         }
1509 }
1510
1511 /*
1512  * usbvision_probe()
1513  *
1514  * This procedure queries device descriptor and accepts the interface
1515  * if it looks like USBVISION video device
1516  *
1517  */
1518 static int usbvision_probe(struct usb_interface *intf,
1519                            const struct usb_device_id *devid)
1520 {
1521         struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
1522         struct usb_interface *uif;
1523         __u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
1524         const struct usb_host_interface *interface;
1525         struct usb_usbvision *usbvision = NULL;
1526         const struct usb_endpoint_descriptor *endpoint;
1527         int model, i;
1528
1529         PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
1530                                 dev->descriptor.idVendor,
1531                                 dev->descriptor.idProduct, ifnum);
1532
1533         model = devid->driver_info;
1534         if (model < 0 || model >= usbvision_device_data_size) {
1535                 PDEBUG(DBG_PROBE, "model out of bounds %d", model);
1536                 return -ENODEV;
1537         }
1538         printk(KERN_INFO "%s: %s found\n", __func__,
1539                                 usbvision_device_data[model].model_string);
1540
1541         if (usbvision_device_data[model].interface >= 0)
1542                 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0];
1543         else
1544                 interface = &dev->actconfig->interface[ifnum]->altsetting[0];
1545         endpoint = &interface->endpoint[1].desc;
1546         if (!usb_endpoint_xfer_isoc(endpoint)) {
1547                 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n",
1548                     __func__, ifnum);
1549                 dev_err(&intf->dev, "%s: Endpoint attributes %d",
1550                     __func__, endpoint->bmAttributes);
1551                 return -ENODEV;
1552         }
1553         if (usb_endpoint_dir_out(endpoint)) {
1554                 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n",
1555                     __func__, ifnum);
1556                 return -ENODEV;
1557         }
1558
1559         usbvision = usbvision_alloc(dev, intf);
1560         if (usbvision == NULL) {
1561                 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__);
1562                 return -ENOMEM;
1563         }
1564
1565         if (dev->descriptor.bNumConfigurations > 1)
1566                 usbvision->bridge_type = BRIDGE_NT1004;
1567         else if (model == DAZZLE_DVC_90_REV_1_SECAM)
1568                 usbvision->bridge_type = BRIDGE_NT1005;
1569         else
1570                 usbvision->bridge_type = BRIDGE_NT1003;
1571         PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type);
1572
1573         /* compute alternate max packet sizes */
1574         uif = dev->actconfig->interface[0];
1575
1576         usbvision->num_alt = uif->num_altsetting;
1577         PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt);
1578         usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL);
1579         if (usbvision->alt_max_pkt_size == NULL) {
1580                 dev_err(&intf->dev, "usbvision: out of memory!\n");
1581                 usbvision_release(usbvision);
1582                 return -ENOMEM;
1583         }
1584
1585         for (i = 0; i < usbvision->num_alt; i++) {
1586                 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
1587                                       wMaxPacketSize);
1588                 usbvision->alt_max_pkt_size[i] =
1589                         (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
1590                 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i,
1591                        usbvision->alt_max_pkt_size[i]);
1592         }
1593
1594
1595         usbvision->nr = usbvision_nr++;
1596
1597         usbvision->have_tuner = usbvision_device_data[model].tuner;
1598         if (usbvision->have_tuner)
1599                 usbvision->tuner_type = usbvision_device_data[model].tuner_type;
1600
1601         usbvision->dev_model = model;
1602         usbvision->remove_pending = 0;
1603         usbvision->iface = ifnum;
1604         usbvision->iface_alt = 0;
1605         usbvision->video_endp = endpoint->bEndpointAddress;
1606         usbvision->isoc_packet_size = 0;
1607         usbvision->usb_bandwidth = 0;
1608         usbvision->user = 0;
1609         usbvision->streaming = stream_off;
1610         usbvision_configure_video(usbvision);
1611         usbvision_register_video(usbvision);
1612
1613         usbvision_create_sysfs(usbvision->vdev);
1614
1615         PDEBUG(DBG_PROBE, "success");
1616         return 0;
1617 }
1618
1619
1620 /*
1621  * usbvision_disconnect()
1622  *
1623  * This procedure stops all driver activity, deallocates interface-private
1624  * structure (pointed by 'ptr') and after that driver should be removable
1625  * with no ill consequences.
1626  *
1627  */
1628 static void usbvision_disconnect(struct usb_interface *intf)
1629 {
1630         struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf));
1631
1632         PDEBUG(DBG_PROBE, "");
1633
1634         if (usbvision == NULL) {
1635                 pr_err("%s: usb_get_intfdata() failed\n", __func__);
1636                 return;
1637         }
1638
1639         mutex_lock(&usbvision->v4l2_lock);
1640
1641         /* At this time we ask to cancel outstanding URBs */
1642         usbvision_stop_isoc(usbvision);
1643
1644         v4l2_device_disconnect(&usbvision->v4l2_dev);
1645
1646         if (usbvision->power) {
1647                 usbvision_i2c_unregister(usbvision);
1648                 usbvision_power_off(usbvision);
1649         }
1650         usbvision->remove_pending = 1;  /* Now all ISO data will be ignored */
1651
1652         usb_put_dev(usbvision->dev);
1653         usbvision->dev = NULL;  /* USB device is no more */
1654
1655         mutex_unlock(&usbvision->v4l2_lock);
1656
1657         if (usbvision->user) {
1658                 printk(KERN_INFO "%s: In use, disconnect pending\n",
1659                        __func__);
1660                 wake_up_interruptible(&usbvision->wait_frame);
1661                 wake_up_interruptible(&usbvision->wait_stream);
1662         } else {
1663                 usbvision_release(usbvision);
1664         }
1665
1666         PDEBUG(DBG_PROBE, "success");
1667 }
1668
1669 static struct usb_driver usbvision_driver = {
1670         .name           = "usbvision",
1671         .id_table       = usbvision_table,
1672         .probe          = usbvision_probe,
1673         .disconnect     = usbvision_disconnect,
1674 };
1675
1676 /*
1677  * usbvision_init()
1678  *
1679  * This code is run to initialize the driver.
1680  *
1681  */
1682 static int __init usbvision_init(void)
1683 {
1684         int err_code;
1685
1686         PDEBUG(DBG_PROBE, "");
1687
1688         PDEBUG(DBG_IO,  "IO      debugging is enabled [video]");
1689         PDEBUG(DBG_PROBE, "PROBE   debugging is enabled [video]");
1690         PDEBUG(DBG_MMAP, "MMAP    debugging is enabled [video]");
1691
1692         /* disable planar mode support unless compression enabled */
1693         if (isoc_mode != ISOC_MODE_COMPRESS) {
1694                 /* FIXME : not the right way to set supported flag */
1695                 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */
1696                 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */
1697         }
1698
1699         err_code = usb_register(&usbvision_driver);
1700
1701         if (err_code == 0) {
1702                 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n");
1703                 PDEBUG(DBG_PROBE, "success");
1704         }
1705         return err_code;
1706 }
1707
1708 static void __exit usbvision_exit(void)
1709 {
1710         PDEBUG(DBG_PROBE, "");
1711
1712         usb_deregister(&usbvision_driver);
1713         PDEBUG(DBG_PROBE, "success");
1714 }
1715
1716 module_init(usbvision_init);
1717 module_exit(usbvision_exit);
1718
1719 /*
1720  * Overrides for Emacs so that we follow Linus's tabbing style.
1721  * ---------------------------------------------------------------------------
1722  * Local variables:
1723  * c-basic-offset: 8
1724  * End:
1725  */