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