usbvision-video.c revision 240d57bb8238d6998644c7f696c27076956ff653
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/version.h> 49#include <linux/kernel.h> 50#include <linux/list.h> 51#include <linux/timer.h> 52#include <linux/slab.h> 53#include <linux/mm.h> 54#include <linux/highmem.h> 55#include <linux/vmalloc.h> 56#include <linux/module.h> 57#include <linux/init.h> 58#include <linux/spinlock.h> 59#include <linux/io.h> 60#include <linux/videodev2.h> 61#include <linux/i2c.h> 62 63#include <media/saa7115.h> 64#include <media/v4l2-common.h> 65#include <media/v4l2-ioctl.h> 66#include <media/tuner.h> 67 68#include <linux/workqueue.h> 69 70#include "usbvision.h" 71#include "usbvision-cards.h" 72 73#define DRIVER_AUTHOR "Joerg Heckenbach <joerg@heckenbach-aw.de>, \ 74Dwaine 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_DRIVER_VERSION_MAJOR 0 80#define USBVISION_DRIVER_VERSION_MINOR 9 81#define USBVISION_DRIVER_VERSION_PATCHLEVEL 10 82#define USBVISION_DRIVER_VERSION KERNEL_VERSION(USBVISION_DRIVER_VERSION_MAJOR,\ 83USBVISION_DRIVER_VERSION_MINOR,\ 84USBVISION_DRIVER_VERSION_PATCHLEVEL) 85#define USBVISION_VERSION_STRING __stringify(USBVISION_DRIVER_VERSION_MAJOR) \ 86"." __stringify(USBVISION_DRIVER_VERSION_MINOR) \ 87"." __stringify(USBVISION_DRIVER_VERSION_PATCHLEVEL) 88 89#define ENABLE_HEXDUMP 0 /* Enable if you need it */ 90 91 92#ifdef USBVISION_DEBUG 93 #define PDEBUG(level, fmt, args...) { \ 94 if (video_debug & (level)) \ 95 printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ 96 __func__, __LINE__ , ## args); \ 97 } 98#else 99 #define PDEBUG(level, fmt, args...) do {} while (0) 100#endif 101 102#define DBG_IO (1 << 1) 103#define DBG_PROBE (1 << 2) 104#define DBG_MMAP (1 << 3) 105 106/* String operations */ 107#define rmspace(str) while (*str == ' ') str++; 108#define goto2next(str) while (*str != ' ') str++; while (*str == ' ') str++; 109 110 111/* sequential number of usbvision device */ 112static int usbvision_nr; 113 114static struct usbvision_v4l2_format_st usbvision_v4l2_format[] = { 115 { 1, 1, 8, V4L2_PIX_FMT_GREY , "GREY" }, 116 { 1, 2, 16, V4L2_PIX_FMT_RGB565 , "RGB565" }, 117 { 1, 3, 24, V4L2_PIX_FMT_RGB24 , "RGB24" }, 118 { 1, 4, 32, V4L2_PIX_FMT_RGB32 , "RGB32" }, 119 { 1, 2, 16, V4L2_PIX_FMT_RGB555 , "RGB555" }, 120 { 1, 2, 16, V4L2_PIX_FMT_YUYV , "YUV422" }, 121 { 1, 2, 12, V4L2_PIX_FMT_YVU420 , "YUV420P" }, /* 1.5 ! */ 122 { 1, 2, 16, V4L2_PIX_FMT_YUV422P , "YUV422P" } 123}; 124 125/* Function prototypes */ 126static void usbvision_release(struct usb_usbvision *usbvision); 127 128/* Default initialization of device driver parameters */ 129/* Set the default format for ISOC endpoint */ 130static int isoc_mode = ISOC_MODE_COMPRESS; 131/* Set the default Debug Mode of the device driver */ 132static int video_debug; 133/* Set the default device to power on at startup */ 134static int power_on_at_open = 1; 135/* Sequential Number of Video Device */ 136static int video_nr = -1; 137/* Sequential Number of Radio Device */ 138static int radio_nr = -1; 139 140/* Grab parameters for the device driver */ 141 142/* Showing parameters under SYSFS */ 143module_param(isoc_mode, int, 0444); 144module_param(video_debug, int, 0444); 145module_param(power_on_at_open, int, 0444); 146module_param(video_nr, int, 0444); 147module_param(radio_nr, int, 0444); 148 149MODULE_PARM_DESC(isoc_mode, " Set the default format for ISOC endpoint. Default: 0x60 (Compression On)"); 150MODULE_PARM_DESC(video_debug, " Set the default Debug Mode of the device driver. Default: 0 (Off)"); 151MODULE_PARM_DESC(power_on_at_open, " Set the default device to power on when device is opened. Default: 1 (On)"); 152MODULE_PARM_DESC(video_nr, "Set video device number (/dev/videoX). Default: -1 (autodetect)"); 153MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); 154 155 156/* Misc stuff */ 157MODULE_AUTHOR(DRIVER_AUTHOR); 158MODULE_DESCRIPTION(DRIVER_DESC); 159MODULE_LICENSE(DRIVER_LICENSE); 160MODULE_VERSION(USBVISION_VERSION_STRING); 161MODULE_ALIAS(DRIVER_ALIAS); 162 163 164/*****************************************************************************/ 165/* SYSFS Code - Copied from the stv680.c usb module. */ 166/* Device information is located at /sys/class/video4linux/video0 */ 167/* Device parameters information is located at /sys/module/usbvision */ 168/* Device USB Information is located at */ 169/* /sys/bus/usb/drivers/USBVision Video Grabber */ 170/*****************************************************************************/ 171 172#define YES_NO(x) ((x) ? "Yes" : "No") 173 174static inline struct usb_usbvision *cd_to_usbvision(struct device *cd) 175{ 176 struct video_device *vdev = 177 container_of(cd, struct video_device, dev); 178 return video_get_drvdata(vdev); 179} 180 181static ssize_t show_version(struct device *cd, 182 struct device_attribute *attr, char *buf) 183{ 184 return sprintf(buf, "%s\n", USBVISION_VERSION_STRING); 185} 186static DEVICE_ATTR(version, S_IRUGO, show_version, NULL); 187 188static ssize_t show_model(struct device *cd, 189 struct device_attribute *attr, char *buf) 190{ 191 struct video_device *vdev = 192 container_of(cd, struct video_device, dev); 193 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 194 return sprintf(buf, "%s\n", 195 usbvision_device_data[usbvision->dev_model].model_string); 196} 197static DEVICE_ATTR(model, S_IRUGO, show_model, NULL); 198 199static ssize_t show_hue(struct device *cd, 200 struct device_attribute *attr, char *buf) 201{ 202 struct video_device *vdev = 203 container_of(cd, struct video_device, dev); 204 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 205 struct v4l2_control ctrl; 206 ctrl.id = V4L2_CID_HUE; 207 ctrl.value = 0; 208 if (usbvision->user) 209 call_all(usbvision, core, g_ctrl, &ctrl); 210 return sprintf(buf, "%d\n", ctrl.value); 211} 212static DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL); 213 214static ssize_t show_contrast(struct device *cd, 215 struct device_attribute *attr, char *buf) 216{ 217 struct video_device *vdev = 218 container_of(cd, struct video_device, dev); 219 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 220 struct v4l2_control ctrl; 221 ctrl.id = V4L2_CID_CONTRAST; 222 ctrl.value = 0; 223 if (usbvision->user) 224 call_all(usbvision, core, g_ctrl, &ctrl); 225 return sprintf(buf, "%d\n", ctrl.value); 226} 227static DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL); 228 229static ssize_t show_brightness(struct device *cd, 230 struct device_attribute *attr, char *buf) 231{ 232 struct video_device *vdev = 233 container_of(cd, struct video_device, dev); 234 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 235 struct v4l2_control ctrl; 236 ctrl.id = V4L2_CID_BRIGHTNESS; 237 ctrl.value = 0; 238 if (usbvision->user) 239 call_all(usbvision, core, g_ctrl, &ctrl); 240 return sprintf(buf, "%d\n", ctrl.value); 241} 242static DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL); 243 244static ssize_t show_saturation(struct device *cd, 245 struct device_attribute *attr, char *buf) 246{ 247 struct video_device *vdev = 248 container_of(cd, struct video_device, dev); 249 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 250 struct v4l2_control ctrl; 251 ctrl.id = V4L2_CID_SATURATION; 252 ctrl.value = 0; 253 if (usbvision->user) 254 call_all(usbvision, core, g_ctrl, &ctrl); 255 return sprintf(buf, "%d\n", ctrl.value); 256} 257static DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL); 258 259static ssize_t show_streaming(struct device *cd, 260 struct device_attribute *attr, char *buf) 261{ 262 struct video_device *vdev = 263 container_of(cd, struct video_device, dev); 264 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 265 return sprintf(buf, "%s\n", 266 YES_NO(usbvision->streaming == stream_on ? 1 : 0)); 267} 268static DEVICE_ATTR(streaming, S_IRUGO, show_streaming, NULL); 269 270static ssize_t show_compression(struct device *cd, 271 struct device_attribute *attr, char *buf) 272{ 273 struct video_device *vdev = 274 container_of(cd, struct video_device, dev); 275 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 276 return sprintf(buf, "%s\n", 277 YES_NO(usbvision->isoc_mode == ISOC_MODE_COMPRESS)); 278} 279static DEVICE_ATTR(compression, S_IRUGO, show_compression, NULL); 280 281static ssize_t show_device_bridge(struct device *cd, 282 struct device_attribute *attr, char *buf) 283{ 284 struct video_device *vdev = 285 container_of(cd, struct video_device, dev); 286 struct usb_usbvision *usbvision = video_get_drvdata(vdev); 287 return sprintf(buf, "%d\n", usbvision->bridge_type); 288} 289static DEVICE_ATTR(bridge, S_IRUGO, show_device_bridge, NULL); 290 291static void usbvision_create_sysfs(struct video_device *vdev) 292{ 293 int res; 294 295 if (!vdev) 296 return; 297 do { 298 res = device_create_file(&vdev->dev, &dev_attr_version); 299 if (res < 0) 300 break; 301 res = device_create_file(&vdev->dev, &dev_attr_model); 302 if (res < 0) 303 break; 304 res = device_create_file(&vdev->dev, &dev_attr_hue); 305 if (res < 0) 306 break; 307 res = device_create_file(&vdev->dev, &dev_attr_contrast); 308 if (res < 0) 309 break; 310 res = device_create_file(&vdev->dev, &dev_attr_brightness); 311 if (res < 0) 312 break; 313 res = device_create_file(&vdev->dev, &dev_attr_saturation); 314 if (res < 0) 315 break; 316 res = device_create_file(&vdev->dev, &dev_attr_streaming); 317 if (res < 0) 318 break; 319 res = device_create_file(&vdev->dev, &dev_attr_compression); 320 if (res < 0) 321 break; 322 res = device_create_file(&vdev->dev, &dev_attr_bridge); 323 if (res >= 0) 324 return; 325 } while (0); 326 327 dev_err(&vdev->dev, "%s error: %d\n", __func__, res); 328} 329 330static void usbvision_remove_sysfs(struct video_device *vdev) 331{ 332 if (vdev) { 333 device_remove_file(&vdev->dev, &dev_attr_version); 334 device_remove_file(&vdev->dev, &dev_attr_model); 335 device_remove_file(&vdev->dev, &dev_attr_hue); 336 device_remove_file(&vdev->dev, &dev_attr_contrast); 337 device_remove_file(&vdev->dev, &dev_attr_brightness); 338 device_remove_file(&vdev->dev, &dev_attr_saturation); 339 device_remove_file(&vdev->dev, &dev_attr_streaming); 340 device_remove_file(&vdev->dev, &dev_attr_compression); 341 device_remove_file(&vdev->dev, &dev_attr_bridge); 342 } 343} 344 345/* 346 * usbvision_open() 347 * 348 * This is part of Video 4 Linux API. The driver can be opened by one 349 * client only (checks internal counter 'usbvision->user'). The procedure 350 * then allocates buffers needed for video processing. 351 * 352 */ 353static int usbvision_v4l2_open(struct file *file) 354{ 355 struct usb_usbvision *usbvision = video_drvdata(file); 356 int err_code = 0; 357 358 PDEBUG(DBG_IO, "open"); 359 360 usbvision_reset_power_off_timer(usbvision); 361 362 if (usbvision->user) 363 err_code = -EBUSY; 364 else { 365 /* Allocate memory for the scratch ring buffer */ 366 err_code = usbvision_scratch_alloc(usbvision); 367 if (isoc_mode == ISOC_MODE_COMPRESS) { 368 /* Allocate intermediate decompression buffers 369 only if needed */ 370 err_code = usbvision_decompress_alloc(usbvision); 371 } 372 if (err_code) { 373 /* Deallocate all buffers if trouble */ 374 usbvision_scratch_free(usbvision); 375 usbvision_decompress_free(usbvision); 376 } 377 } 378 379 /* If so far no errors then we shall start the camera */ 380 if (!err_code) { 381 if (usbvision->power == 0) { 382 usbvision_power_on(usbvision); 383 usbvision_i2c_register(usbvision); 384 } 385 386 /* Send init sequence only once, it's large! */ 387 if (!usbvision->initialized) { 388 int setup_ok = 0; 389 setup_ok = usbvision_setup(usbvision, isoc_mode); 390 if (setup_ok) 391 usbvision->initialized = 1; 392 else 393 err_code = -EBUSY; 394 } 395 396 if (!err_code) { 397 usbvision_begin_streaming(usbvision); 398 err_code = usbvision_init_isoc(usbvision); 399 /* device must be initialized before isoc transfer */ 400 usbvision_muxsel(usbvision, 0); 401 usbvision->user++; 402 } else { 403 if (power_on_at_open) { 404 usbvision_i2c_unregister(usbvision); 405 usbvision_power_off(usbvision); 406 usbvision->initialized = 0; 407 } 408 } 409 } 410 411 /* prepare queues */ 412 usbvision_empty_framequeues(usbvision); 413 414 PDEBUG(DBG_IO, "success"); 415 return err_code; 416} 417 418/* 419 * usbvision_v4l2_close() 420 * 421 * This is part of Video 4 Linux API. The procedure 422 * stops streaming and deallocates all buffers that were earlier 423 * allocated in usbvision_v4l2_open(). 424 * 425 */ 426static int usbvision_v4l2_close(struct file *file) 427{ 428 struct usb_usbvision *usbvision = video_drvdata(file); 429 430 PDEBUG(DBG_IO, "close"); 431 432 usbvision_audio_off(usbvision); 433 usbvision_restart_isoc(usbvision); 434 usbvision_stop_isoc(usbvision); 435 436 usbvision_decompress_free(usbvision); 437 usbvision_frames_free(usbvision); 438 usbvision_empty_framequeues(usbvision); 439 usbvision_scratch_free(usbvision); 440 441 usbvision->user--; 442 443 if (power_on_at_open) { 444 /* power off in a little while 445 to avoid off/on every close/open short sequences */ 446 usbvision_set_power_off_timer(usbvision); 447 usbvision->initialized = 0; 448 } 449 450 if (usbvision->remove_pending) { 451 printk(KERN_INFO "%s: Final disconnect\n", __func__); 452 usbvision_release(usbvision); 453 } 454 455 PDEBUG(DBG_IO, "success"); 456 return 0; 457} 458 459 460/* 461 * usbvision_ioctl() 462 * 463 * This is part of Video 4 Linux API. The procedure handles ioctl() calls. 464 * 465 */ 466#ifdef CONFIG_VIDEO_ADV_DEBUG 467static int vidioc_g_register(struct file *file, void *priv, 468 struct v4l2_dbg_register *reg) 469{ 470 struct usb_usbvision *usbvision = video_drvdata(file); 471 int err_code; 472 473 if (!v4l2_chip_match_host(®->match)) 474 return -EINVAL; 475 /* NT100x has a 8-bit register space */ 476 err_code = usbvision_read_reg(usbvision, reg->reg&0xff); 477 if (err_code < 0) { 478 dev_err(&usbvision->vdev->dev, 479 "%s: VIDIOC_DBG_G_REGISTER failed: error %d\n", 480 __func__, err_code); 481 return err_code; 482 } 483 reg->val = err_code; 484 reg->size = 1; 485 return 0; 486} 487 488static int vidioc_s_register(struct file *file, void *priv, 489 struct v4l2_dbg_register *reg) 490{ 491 struct usb_usbvision *usbvision = video_drvdata(file); 492 int err_code; 493 494 if (!v4l2_chip_match_host(®->match)) 495 return -EINVAL; 496 /* NT100x has a 8-bit register space */ 497 err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val); 498 if (err_code < 0) { 499 dev_err(&usbvision->vdev->dev, 500 "%s: VIDIOC_DBG_S_REGISTER failed: error %d\n", 501 __func__, err_code); 502 return err_code; 503 } 504 return 0; 505} 506#endif 507 508static int vidioc_querycap(struct file *file, void *priv, 509 struct v4l2_capability *vc) 510{ 511 struct usb_usbvision *usbvision = video_drvdata(file); 512 513 strlcpy(vc->driver, "USBVision", sizeof(vc->driver)); 514 strlcpy(vc->card, 515 usbvision_device_data[usbvision->dev_model].model_string, 516 sizeof(vc->card)); 517 usb_make_path(usbvision->dev, vc->bus_info, sizeof(vc->bus_info)); 518 vc->version = USBVISION_DRIVER_VERSION; 519 vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | 520 V4L2_CAP_AUDIO | 521 V4L2_CAP_READWRITE | 522 V4L2_CAP_STREAMING | 523 (usbvision->have_tuner ? V4L2_CAP_TUNER : 0); 524 return 0; 525} 526 527static int vidioc_enum_input(struct file *file, void *priv, 528 struct v4l2_input *vi) 529{ 530 struct usb_usbvision *usbvision = video_drvdata(file); 531 int chan; 532 533 if (vi->index >= usbvision->video_inputs) 534 return -EINVAL; 535 if (usbvision->have_tuner) 536 chan = vi->index; 537 else 538 chan = vi->index + 1; /* skip Television string*/ 539 540 /* Determine the requested input characteristics 541 specific for each usbvision card model */ 542 switch (chan) { 543 case 0: 544 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) { 545 strcpy(vi->name, "White Video Input"); 546 } else { 547 strcpy(vi->name, "Television"); 548 vi->type = V4L2_INPUT_TYPE_TUNER; 549 vi->audioset = 1; 550 vi->tuner = chan; 551 vi->std = USBVISION_NORMS; 552 } 553 break; 554 case 1: 555 vi->type = V4L2_INPUT_TYPE_CAMERA; 556 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) 557 strcpy(vi->name, "Green Video Input"); 558 else 559 strcpy(vi->name, "Composite Video Input"); 560 vi->std = V4L2_STD_PAL; 561 break; 562 case 2: 563 vi->type = V4L2_INPUT_TYPE_CAMERA; 564 if (usbvision_device_data[usbvision->dev_model].video_channels == 4) 565 strcpy(vi->name, "Yellow Video Input"); 566 else 567 strcpy(vi->name, "S-Video Input"); 568 vi->std = V4L2_STD_PAL; 569 break; 570 case 3: 571 vi->type = V4L2_INPUT_TYPE_CAMERA; 572 strcpy(vi->name, "Red Video Input"); 573 vi->std = V4L2_STD_PAL; 574 break; 575 } 576 return 0; 577} 578 579static int vidioc_g_input(struct file *file, void *priv, unsigned int *input) 580{ 581 struct usb_usbvision *usbvision = video_drvdata(file); 582 583 *input = usbvision->ctl_input; 584 return 0; 585} 586 587static int vidioc_s_input(struct file *file, void *priv, unsigned int input) 588{ 589 struct usb_usbvision *usbvision = video_drvdata(file); 590 591 if (input >= usbvision->video_inputs) 592 return -EINVAL; 593 594 usbvision_muxsel(usbvision, input); 595 usbvision_set_input(usbvision); 596 usbvision_set_output(usbvision, 597 usbvision->curwidth, 598 usbvision->curheight); 599 return 0; 600} 601 602static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id) 603{ 604 struct usb_usbvision *usbvision = video_drvdata(file); 605 606 usbvision->tvnorm_id = *id; 607 608 call_all(usbvision, core, s_std, usbvision->tvnorm_id); 609 /* propagate the change to the decoder */ 610 usbvision_muxsel(usbvision, usbvision->ctl_input); 611 612 return 0; 613} 614 615static 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 634static int vidioc_s_tuner(struct file *file, void *priv, 635 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 648static 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 663static int vidioc_s_frequency(struct file *file, void *priv, 664 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 678static 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 690static int vidioc_s_audio(struct file *file, void *fh, 691 struct v4l2_audio *a) 692{ 693 if (a->index) 694 return -EINVAL; 695 return 0; 696} 697 698static 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 711static 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 720static 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 729static 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 757static 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 = 0; 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 790static 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 822static 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 vb->index = f->index; 852 vb->sequence = f->sequence; 853 vb->timestamp = f->timestamp; 854 vb->field = V4L2_FIELD_NONE; 855 vb->bytesused = f->scanlength; 856 857 return 0; 858} 859 860static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) 861{ 862 struct usb_usbvision *usbvision = video_drvdata(file); 863 864 usbvision->streaming = stream_on; 865 call_all(usbvision, video, s_stream, 1); 866 867 return 0; 868} 869 870static int vidioc_streamoff(struct file *file, 871 void *priv, enum v4l2_buf_type type) 872{ 873 struct usb_usbvision *usbvision = video_drvdata(file); 874 875 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 876 return -EINVAL; 877 878 if (usbvision->streaming == stream_on) { 879 usbvision_stream_interrupt(usbvision); 880 /* Stop all video streamings */ 881 call_all(usbvision, video, s_stream, 0); 882 } 883 usbvision_empty_framequeues(usbvision); 884 885 return 0; 886} 887 888static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 889 struct v4l2_fmtdesc *vfd) 890{ 891 if (vfd->index >= USBVISION_SUPPORTED_PALETTES - 1) 892 return -EINVAL; 893 strcpy(vfd->description, usbvision_v4l2_format[vfd->index].desc); 894 vfd->pixelformat = usbvision_v4l2_format[vfd->index].format; 895 return 0; 896} 897 898static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 899 struct v4l2_format *vf) 900{ 901 struct usb_usbvision *usbvision = video_drvdata(file); 902 vf->fmt.pix.width = usbvision->curwidth; 903 vf->fmt.pix.height = usbvision->curheight; 904 vf->fmt.pix.pixelformat = usbvision->palette.format; 905 vf->fmt.pix.bytesperline = 906 usbvision->curwidth * usbvision->palette.bytes_per_pixel; 907 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline * usbvision->curheight; 908 vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; 909 vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */ 910 911 return 0; 912} 913 914static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 915 struct v4l2_format *vf) 916{ 917 struct usb_usbvision *usbvision = video_drvdata(file); 918 int format_idx; 919 920 /* Find requested format in available ones */ 921 for (format_idx = 0; format_idx < USBVISION_SUPPORTED_PALETTES; format_idx++) { 922 if (vf->fmt.pix.pixelformat == 923 usbvision_v4l2_format[format_idx].format) { 924 usbvision->palette = usbvision_v4l2_format[format_idx]; 925 break; 926 } 927 } 928 /* robustness */ 929 if (format_idx == USBVISION_SUPPORTED_PALETTES) 930 return -EINVAL; 931 RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH); 932 RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT); 933 934 vf->fmt.pix.bytesperline = vf->fmt.pix.width* 935 usbvision->palette.bytes_per_pixel; 936 vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*vf->fmt.pix.height; 937 938 return 0; 939} 940 941static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 942 struct v4l2_format *vf) 943{ 944 struct usb_usbvision *usbvision = video_drvdata(file); 945 int ret; 946 947 ret = vidioc_try_fmt_vid_cap(file, priv, vf); 948 if (ret) 949 return ret; 950 951 /* stop io in case it is already in progress */ 952 if (usbvision->streaming == stream_on) { 953 ret = usbvision_stream_interrupt(usbvision); 954 if (ret) 955 return ret; 956 } 957 usbvision_frames_free(usbvision); 958 usbvision_empty_framequeues(usbvision); 959 960 usbvision->cur_frame = NULL; 961 962 /* by now we are committed to the new data... */ 963 usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); 964 965 return 0; 966} 967 968static ssize_t usbvision_v4l2_read(struct file *file, char __user *buf, 969 size_t count, loff_t *ppos) 970{ 971 struct usb_usbvision *usbvision = video_drvdata(file); 972 int noblock = file->f_flags & O_NONBLOCK; 973 unsigned long lock_flags; 974 int ret, i; 975 struct usbvision_frame *frame; 976 977 PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __func__, 978 (unsigned long)count, noblock); 979 980 if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL)) 981 return -EFAULT; 982 983 /* This entry point is compatible with the mmap routines 984 so that a user can do either VIDIOC_QBUF/VIDIOC_DQBUF 985 to get frames or call read on the device. */ 986 if (!usbvision->num_frames) { 987 /* First, allocate some frames to work with 988 if this has not been done with VIDIOC_REQBUF */ 989 usbvision_frames_free(usbvision); 990 usbvision_empty_framequeues(usbvision); 991 usbvision_frames_alloc(usbvision, USBVISION_NUMFRAMES); 992 } 993 994 if (usbvision->streaming != stream_on) { 995 /* no stream is running, make it running ! */ 996 usbvision->streaming = stream_on; 997 call_all(usbvision, video, s_stream, 1); 998 } 999 1000 /* Then, enqueue as many frames as possible 1001 (like a user of VIDIOC_QBUF would do) */ 1002 for (i = 0; i < usbvision->num_frames; i++) { 1003 frame = &usbvision->frame[i]; 1004 if (frame->grabstate == frame_state_unused) { 1005 /* Mark it as ready and enqueue frame */ 1006 frame->grabstate = frame_state_ready; 1007 frame->scanstate = scan_state_scanning; 1008 /* Accumulated in usbvision_parse_data() */ 1009 frame->scanlength = 0; 1010 1011 /* set v4l2_format index */ 1012 frame->v4l2_format = usbvision->palette; 1013 1014 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1015 list_add_tail(&frame->frame, &usbvision->inqueue); 1016 spin_unlock_irqrestore(&usbvision->queue_lock, 1017 lock_flags); 1018 } 1019 } 1020 1021 /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */ 1022 if (list_empty(&(usbvision->outqueue))) { 1023 if (noblock) 1024 return -EAGAIN; 1025 1026 ret = wait_event_interruptible 1027 (usbvision->wait_frame, 1028 !list_empty(&(usbvision->outqueue))); 1029 if (ret) 1030 return ret; 1031 } 1032 1033 spin_lock_irqsave(&usbvision->queue_lock, lock_flags); 1034 frame = list_entry(usbvision->outqueue.next, 1035 struct usbvision_frame, frame); 1036 list_del(usbvision->outqueue.next); 1037 spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); 1038 1039 /* An error returns an empty frame */ 1040 if (frame->grabstate == frame_state_error) { 1041 frame->bytes_read = 0; 1042 return 0; 1043 } 1044 1045 PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", 1046 __func__, 1047 frame->index, frame->bytes_read, frame->scanlength); 1048 1049 /* copy bytes to user space; we allow for partials reads */ 1050 if ((count + frame->bytes_read) > (unsigned long)frame->scanlength) 1051 count = frame->scanlength - frame->bytes_read; 1052 1053 if (copy_to_user(buf, frame->data + frame->bytes_read, count)) 1054 return -EFAULT; 1055 1056 frame->bytes_read += count; 1057 PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", 1058 __func__, 1059 (unsigned long)count, frame->bytes_read); 1060 1061 /* For now, forget the frame if it has not been read in one shot. */ 1062/* if (frame->bytes_read >= frame->scanlength) {*/ /* All data has been read */ 1063 frame->bytes_read = 0; 1064 1065 /* Mark it as available to be used again. */ 1066 frame->grabstate = frame_state_unused; 1067/* } */ 1068 1069 return count; 1070} 1071 1072static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) 1073{ 1074 unsigned long size = vma->vm_end - vma->vm_start, 1075 start = vma->vm_start; 1076 void *pos; 1077 u32 i; 1078 struct usb_usbvision *usbvision = video_drvdata(file); 1079 1080 PDEBUG(DBG_MMAP, "mmap"); 1081 1082 if (!USBVISION_IS_OPERATIONAL(usbvision)) 1083 return -EFAULT; 1084 1085 if (!(vma->vm_flags & VM_WRITE) || 1086 size != PAGE_ALIGN(usbvision->max_frame_size)) { 1087 return -EINVAL; 1088 } 1089 1090 for (i = 0; i < usbvision->num_frames; i++) { 1091 if (((PAGE_ALIGN(usbvision->max_frame_size)*i) >> PAGE_SHIFT) == 1092 vma->vm_pgoff) 1093 break; 1094 } 1095 if (i == usbvision->num_frames) { 1096 PDEBUG(DBG_MMAP, 1097 "mmap: user supplied mapping address is out of range"); 1098 return -EINVAL; 1099 } 1100 1101 /* VM_IO is eventually going to replace PageReserved altogether */ 1102 vma->vm_flags |= VM_IO; 1103 vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ 1104 1105 pos = usbvision->frame[i].data; 1106 while (size > 0) { 1107 if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { 1108 PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); 1109 return -EAGAIN; 1110 } 1111 start += PAGE_SIZE; 1112 pos += PAGE_SIZE; 1113 size -= PAGE_SIZE; 1114 } 1115 1116 return 0; 1117} 1118 1119 1120/* 1121 * Here comes the stuff for radio on usbvision based devices 1122 * 1123 */ 1124static int usbvision_radio_open(struct file *file) 1125{ 1126 struct usb_usbvision *usbvision = video_drvdata(file); 1127 int err_code = 0; 1128 1129 PDEBUG(DBG_IO, "%s:", __func__); 1130 1131 if (usbvision->user) { 1132 dev_err(&usbvision->rdev->dev, 1133 "%s: Someone tried to open an already opened USBVision Radio!\n", 1134 __func__); 1135 err_code = -EBUSY; 1136 } else { 1137 if (power_on_at_open) { 1138 usbvision_reset_power_off_timer(usbvision); 1139 if (usbvision->power == 0) { 1140 usbvision_power_on(usbvision); 1141 usbvision_i2c_register(usbvision); 1142 } 1143 } 1144 1145 /* Alternate interface 1 is is the biggest frame size */ 1146 err_code = usbvision_set_alternate(usbvision); 1147 if (err_code < 0) { 1148 usbvision->last_error = err_code; 1149 err_code = -EBUSY; 1150 goto out; 1151 } 1152 1153 /* If so far no errors then we shall start the radio */ 1154 usbvision->radio = 1; 1155 call_all(usbvision, tuner, s_radio); 1156 usbvision_set_audio(usbvision, USBVISION_AUDIO_RADIO); 1157 usbvision->user++; 1158 } 1159 1160 if (err_code) { 1161 if (power_on_at_open) { 1162 usbvision_i2c_unregister(usbvision); 1163 usbvision_power_off(usbvision); 1164 usbvision->initialized = 0; 1165 } 1166 } 1167out: 1168 return err_code; 1169} 1170 1171 1172static int usbvision_radio_close(struct file *file) 1173{ 1174 struct usb_usbvision *usbvision = video_drvdata(file); 1175 int err_code = 0; 1176 1177 PDEBUG(DBG_IO, ""); 1178 1179 /* Set packet size to 0 */ 1180 usbvision->iface_alt = 0; 1181 err_code = usb_set_interface(usbvision->dev, usbvision->iface, 1182 usbvision->iface_alt); 1183 1184 usbvision_audio_off(usbvision); 1185 usbvision->radio = 0; 1186 usbvision->user--; 1187 1188 if (power_on_at_open) { 1189 usbvision_set_power_off_timer(usbvision); 1190 usbvision->initialized = 0; 1191 } 1192 1193 if (usbvision->remove_pending) { 1194 printk(KERN_INFO "%s: Final disconnect\n", __func__); 1195 usbvision_release(usbvision); 1196 } 1197 1198 PDEBUG(DBG_IO, "success"); 1199 return err_code; 1200} 1201 1202/* Video registration stuff */ 1203 1204/* Video template */ 1205static const struct v4l2_file_operations usbvision_fops = { 1206 .owner = THIS_MODULE, 1207 .open = usbvision_v4l2_open, 1208 .release = usbvision_v4l2_close, 1209 .read = usbvision_v4l2_read, 1210 .mmap = usbvision_v4l2_mmap, 1211 .unlocked_ioctl = video_ioctl2, 1212/* .poll = video_poll, */ 1213}; 1214 1215static const struct v4l2_ioctl_ops usbvision_ioctl_ops = { 1216 .vidioc_querycap = vidioc_querycap, 1217 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1218 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1219 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1220 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1221 .vidioc_reqbufs = vidioc_reqbufs, 1222 .vidioc_querybuf = vidioc_querybuf, 1223 .vidioc_qbuf = vidioc_qbuf, 1224 .vidioc_dqbuf = vidioc_dqbuf, 1225 .vidioc_s_std = vidioc_s_std, 1226 .vidioc_enum_input = vidioc_enum_input, 1227 .vidioc_g_input = vidioc_g_input, 1228 .vidioc_s_input = vidioc_s_input, 1229 .vidioc_queryctrl = vidioc_queryctrl, 1230 .vidioc_g_audio = vidioc_g_audio, 1231 .vidioc_s_audio = vidioc_s_audio, 1232 .vidioc_g_ctrl = vidioc_g_ctrl, 1233 .vidioc_s_ctrl = vidioc_s_ctrl, 1234 .vidioc_streamon = vidioc_streamon, 1235 .vidioc_streamoff = vidioc_streamoff, 1236 .vidioc_g_tuner = vidioc_g_tuner, 1237 .vidioc_s_tuner = vidioc_s_tuner, 1238 .vidioc_g_frequency = vidioc_g_frequency, 1239 .vidioc_s_frequency = vidioc_s_frequency, 1240#ifdef CONFIG_VIDEO_ADV_DEBUG 1241 .vidioc_g_register = vidioc_g_register, 1242 .vidioc_s_register = vidioc_s_register, 1243#endif 1244}; 1245 1246static struct video_device usbvision_video_template = { 1247 .fops = &usbvision_fops, 1248 .ioctl_ops = &usbvision_ioctl_ops, 1249 .name = "usbvision-video", 1250 .release = video_device_release, 1251 .tvnorms = USBVISION_NORMS, 1252 .current_norm = V4L2_STD_PAL 1253}; 1254 1255 1256/* Radio template */ 1257static const struct v4l2_file_operations usbvision_radio_fops = { 1258 .owner = THIS_MODULE, 1259 .open = usbvision_radio_open, 1260 .release = usbvision_radio_close, 1261 .unlocked_ioctl = video_ioctl2, 1262}; 1263 1264static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = { 1265 .vidioc_querycap = vidioc_querycap, 1266 .vidioc_enum_input = vidioc_enum_input, 1267 .vidioc_g_input = vidioc_g_input, 1268 .vidioc_s_input = vidioc_s_input, 1269 .vidioc_queryctrl = vidioc_queryctrl, 1270 .vidioc_g_audio = vidioc_g_audio, 1271 .vidioc_s_audio = vidioc_s_audio, 1272 .vidioc_g_ctrl = vidioc_g_ctrl, 1273 .vidioc_s_ctrl = vidioc_s_ctrl, 1274 .vidioc_g_tuner = vidioc_g_tuner, 1275 .vidioc_s_tuner = vidioc_s_tuner, 1276 .vidioc_g_frequency = vidioc_g_frequency, 1277 .vidioc_s_frequency = vidioc_s_frequency, 1278}; 1279 1280static struct video_device usbvision_radio_template = { 1281 .fops = &usbvision_radio_fops, 1282 .name = "usbvision-radio", 1283 .release = video_device_release, 1284 .ioctl_ops = &usbvision_radio_ioctl_ops, 1285 1286 .tvnorms = USBVISION_NORMS, 1287 .current_norm = V4L2_STD_PAL 1288}; 1289 1290 1291static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision, 1292 struct video_device *vdev_template, 1293 char *name) 1294{ 1295 struct usb_device *usb_dev = usbvision->dev; 1296 struct video_device *vdev; 1297 1298 if (usb_dev == NULL) { 1299 dev_err(&usbvision->dev->dev, 1300 "%s: usbvision->dev is not set\n", __func__); 1301 return NULL; 1302 } 1303 1304 vdev = video_device_alloc(); 1305 if (NULL == vdev) 1306 return NULL; 1307 *vdev = *vdev_template; 1308 vdev->lock = &usbvision->v4l2_lock; 1309 vdev->v4l2_dev = &usbvision->v4l2_dev; 1310 snprintf(vdev->name, sizeof(vdev->name), "%s", name); 1311 video_set_drvdata(vdev, usbvision); 1312 return vdev; 1313} 1314 1315/* unregister video4linux devices */ 1316static void usbvision_unregister_video(struct usb_usbvision *usbvision) 1317{ 1318 /* Radio Device: */ 1319 if (usbvision->rdev) { 1320 PDEBUG(DBG_PROBE, "unregister %s [v4l2]", 1321 video_device_node_name(usbvision->rdev)); 1322 if (video_is_registered(usbvision->rdev)) 1323 video_unregister_device(usbvision->rdev); 1324 else 1325 video_device_release(usbvision->rdev); 1326 usbvision->rdev = NULL; 1327 } 1328 1329 /* Video Device: */ 1330 if (usbvision->vdev) { 1331 PDEBUG(DBG_PROBE, "unregister %s [v4l2]", 1332 video_device_node_name(usbvision->vdev)); 1333 if (video_is_registered(usbvision->vdev)) 1334 video_unregister_device(usbvision->vdev); 1335 else 1336 video_device_release(usbvision->vdev); 1337 usbvision->vdev = NULL; 1338 } 1339} 1340 1341/* register video4linux devices */ 1342static int __devinit usbvision_register_video(struct usb_usbvision *usbvision) 1343{ 1344 /* Video Device: */ 1345 usbvision->vdev = usbvision_vdev_init(usbvision, 1346 &usbvision_video_template, 1347 "USBVision Video"); 1348 if (usbvision->vdev == NULL) 1349 goto err_exit; 1350 if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0) 1351 goto err_exit; 1352 printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n", 1353 usbvision->nr, video_device_node_name(usbvision->vdev)); 1354 1355 /* Radio Device: */ 1356 if (usbvision_device_data[usbvision->dev_model].radio) { 1357 /* usbvision has radio */ 1358 usbvision->rdev = usbvision_vdev_init(usbvision, 1359 &usbvision_radio_template, 1360 "USBVision Radio"); 1361 if (usbvision->rdev == NULL) 1362 goto err_exit; 1363 if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0) 1364 goto err_exit; 1365 printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n", 1366 usbvision->nr, video_device_node_name(usbvision->rdev)); 1367 } 1368 /* all done */ 1369 return 0; 1370 1371 err_exit: 1372 dev_err(&usbvision->dev->dev, 1373 "USBVision[%d]: video_register_device() failed\n", 1374 usbvision->nr); 1375 usbvision_unregister_video(usbvision); 1376 return -1; 1377} 1378 1379/* 1380 * usbvision_alloc() 1381 * 1382 * This code allocates the struct usb_usbvision. 1383 * It is filled with default values. 1384 * 1385 * Returns NULL on error, a pointer to usb_usbvision else. 1386 * 1387 */ 1388static struct usb_usbvision *usbvision_alloc(struct usb_device *dev, 1389 struct usb_interface *intf) 1390{ 1391 struct usb_usbvision *usbvision; 1392 1393 usbvision = kzalloc(sizeof(struct usb_usbvision), GFP_KERNEL); 1394 if (usbvision == NULL) 1395 return NULL; 1396 1397 usbvision->dev = dev; 1398 if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev)) 1399 goto err_free; 1400 1401 mutex_init(&usbvision->v4l2_lock); 1402 1403 /* prepare control urb for control messages during interrupts */ 1404 usbvision->ctrl_urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); 1405 if (usbvision->ctrl_urb == NULL) 1406 goto err_unreg; 1407 init_waitqueue_head(&usbvision->ctrl_urb_wq); 1408 1409 usbvision_init_power_off_timer(usbvision); 1410 1411 return usbvision; 1412 1413err_unreg: 1414 v4l2_device_unregister(&usbvision->v4l2_dev); 1415err_free: 1416 kfree(usbvision); 1417 return NULL; 1418} 1419 1420/* 1421 * usbvision_release() 1422 * 1423 * This code does final release of struct usb_usbvision. This happens 1424 * after the device is disconnected -and- all clients closed their files. 1425 * 1426 */ 1427static void usbvision_release(struct usb_usbvision *usbvision) 1428{ 1429 PDEBUG(DBG_PROBE, ""); 1430 1431 usbvision_reset_power_off_timer(usbvision); 1432 1433 usbvision->initialized = 0; 1434 1435 usbvision_remove_sysfs(usbvision->vdev); 1436 usbvision_unregister_video(usbvision); 1437 1438 usb_free_urb(usbvision->ctrl_urb); 1439 1440 v4l2_device_unregister(&usbvision->v4l2_dev); 1441 kfree(usbvision); 1442 1443 PDEBUG(DBG_PROBE, "success"); 1444} 1445 1446 1447/*********************** usb interface **********************************/ 1448 1449static void usbvision_configure_video(struct usb_usbvision *usbvision) 1450{ 1451 int model; 1452 1453 if (usbvision == NULL) 1454 return; 1455 1456 model = usbvision->dev_model; 1457 usbvision->palette = usbvision_v4l2_format[2]; /* V4L2_PIX_FMT_RGB24; */ 1458 1459 if (usbvision_device_data[usbvision->dev_model].vin_reg2_override) { 1460 usbvision->vin_reg2_preset = 1461 usbvision_device_data[usbvision->dev_model].vin_reg2; 1462 } else { 1463 usbvision->vin_reg2_preset = 0; 1464 } 1465 1466 usbvision->tvnorm_id = usbvision_device_data[model].video_norm; 1467 1468 usbvision->video_inputs = usbvision_device_data[model].video_channels; 1469 usbvision->ctl_input = 0; 1470 1471 /* This should be here to make i2c clients to be able to register */ 1472 /* first switch off audio */ 1473 if (usbvision_device_data[model].audio_channels > 0) 1474 usbvision_audio_off(usbvision); 1475 if (!power_on_at_open) { 1476 /* and then power up the noisy tuner */ 1477 usbvision_power_on(usbvision); 1478 usbvision_i2c_register(usbvision); 1479 } 1480} 1481 1482/* 1483 * usbvision_probe() 1484 * 1485 * This procedure queries device descriptor and accepts the interface 1486 * if it looks like USBVISION video device 1487 * 1488 */ 1489static int __devinit usbvision_probe(struct usb_interface *intf, 1490 const struct usb_device_id *devid) 1491{ 1492 struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf)); 1493 struct usb_interface *uif; 1494 __u8 ifnum = intf->altsetting->desc.bInterfaceNumber; 1495 const struct usb_host_interface *interface; 1496 struct usb_usbvision *usbvision = NULL; 1497 const struct usb_endpoint_descriptor *endpoint; 1498 int model, i; 1499 1500 PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u", 1501 dev->descriptor.idVendor, 1502 dev->descriptor.idProduct, ifnum); 1503 1504 model = devid->driver_info; 1505 if (model < 0 || model >= usbvision_device_data_size) { 1506 PDEBUG(DBG_PROBE, "model out of bounds %d", model); 1507 return -ENODEV; 1508 } 1509 printk(KERN_INFO "%s: %s found\n", __func__, 1510 usbvision_device_data[model].model_string); 1511 1512 if (usbvision_device_data[model].interface >= 0) 1513 interface = &dev->actconfig->interface[usbvision_device_data[model].interface]->altsetting[0]; 1514 else 1515 interface = &dev->actconfig->interface[ifnum]->altsetting[0]; 1516 endpoint = &interface->endpoint[1].desc; 1517 if (!usb_endpoint_xfer_isoc(endpoint)) { 1518 dev_err(&intf->dev, "%s: interface %d. has non-ISO endpoint!\n", 1519 __func__, ifnum); 1520 dev_err(&intf->dev, "%s: Endpoint attributes %d", 1521 __func__, endpoint->bmAttributes); 1522 return -ENODEV; 1523 } 1524 if (usb_endpoint_dir_out(endpoint)) { 1525 dev_err(&intf->dev, "%s: interface %d. has ISO OUT endpoint!\n", 1526 __func__, ifnum); 1527 return -ENODEV; 1528 } 1529 1530 usbvision = usbvision_alloc(dev, intf); 1531 if (usbvision == NULL) { 1532 dev_err(&intf->dev, "%s: couldn't allocate USBVision struct\n", __func__); 1533 return -ENOMEM; 1534 } 1535 1536 if (dev->descriptor.bNumConfigurations > 1) 1537 usbvision->bridge_type = BRIDGE_NT1004; 1538 else if (model == DAZZLE_DVC_90_REV_1_SECAM) 1539 usbvision->bridge_type = BRIDGE_NT1005; 1540 else 1541 usbvision->bridge_type = BRIDGE_NT1003; 1542 PDEBUG(DBG_PROBE, "bridge_type %d", usbvision->bridge_type); 1543 1544 /* compute alternate max packet sizes */ 1545 uif = dev->actconfig->interface[0]; 1546 1547 usbvision->num_alt = uif->num_altsetting; 1548 PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt); 1549 usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL); 1550 if (usbvision->alt_max_pkt_size == NULL) { 1551 dev_err(&intf->dev, "usbvision: out of memory!\n"); 1552 return -ENOMEM; 1553 } 1554 1555 for (i = 0; i < usbvision->num_alt; i++) { 1556 u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. 1557 wMaxPacketSize); 1558 usbvision->alt_max_pkt_size[i] = 1559 (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); 1560 PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i", i, 1561 usbvision->alt_max_pkt_size[i]); 1562 } 1563 1564 1565 usbvision->nr = usbvision_nr++; 1566 1567 usbvision->have_tuner = usbvision_device_data[model].tuner; 1568 if (usbvision->have_tuner) 1569 usbvision->tuner_type = usbvision_device_data[model].tuner_type; 1570 1571 usbvision->dev_model = model; 1572 usbvision->remove_pending = 0; 1573 usbvision->iface = ifnum; 1574 usbvision->iface_alt = 0; 1575 usbvision->video_endp = endpoint->bEndpointAddress; 1576 usbvision->isoc_packet_size = 0; 1577 usbvision->usb_bandwidth = 0; 1578 usbvision->user = 0; 1579 usbvision->streaming = stream_off; 1580 usbvision_configure_video(usbvision); 1581 usbvision_register_video(usbvision); 1582 1583 usbvision_create_sysfs(usbvision->vdev); 1584 1585 PDEBUG(DBG_PROBE, "success"); 1586 return 0; 1587} 1588 1589 1590/* 1591 * usbvision_disconnect() 1592 * 1593 * This procedure stops all driver activity, deallocates interface-private 1594 * structure (pointed by 'ptr') and after that driver should be removable 1595 * with no ill consequences. 1596 * 1597 */ 1598static void __devexit usbvision_disconnect(struct usb_interface *intf) 1599{ 1600 struct usb_usbvision *usbvision = to_usbvision(usb_get_intfdata(intf)); 1601 1602 PDEBUG(DBG_PROBE, ""); 1603 1604 if (usbvision == NULL) { 1605 pr_err("%s: usb_get_intfdata() failed\n", __func__); 1606 return; 1607 } 1608 1609 mutex_lock(&usbvision->v4l2_lock); 1610 1611 /* At this time we ask to cancel outstanding URBs */ 1612 usbvision_stop_isoc(usbvision); 1613 1614 v4l2_device_disconnect(&usbvision->v4l2_dev); 1615 1616 if (usbvision->power) { 1617 usbvision_i2c_unregister(usbvision); 1618 usbvision_power_off(usbvision); 1619 } 1620 usbvision->remove_pending = 1; /* Now all ISO data will be ignored */ 1621 1622 usb_put_dev(usbvision->dev); 1623 usbvision->dev = NULL; /* USB device is no more */ 1624 1625 mutex_unlock(&usbvision->v4l2_lock); 1626 1627 if (usbvision->user) { 1628 printk(KERN_INFO "%s: In use, disconnect pending\n", 1629 __func__); 1630 wake_up_interruptible(&usbvision->wait_frame); 1631 wake_up_interruptible(&usbvision->wait_stream); 1632 } else { 1633 usbvision_release(usbvision); 1634 } 1635 1636 PDEBUG(DBG_PROBE, "success"); 1637} 1638 1639static struct usb_driver usbvision_driver = { 1640 .name = "usbvision", 1641 .id_table = usbvision_table, 1642 .probe = usbvision_probe, 1643 .disconnect = __devexit_p(usbvision_disconnect), 1644}; 1645 1646/* 1647 * usbvision_init() 1648 * 1649 * This code is run to initialize the driver. 1650 * 1651 */ 1652static int __init usbvision_init(void) 1653{ 1654 int err_code; 1655 1656 PDEBUG(DBG_PROBE, ""); 1657 1658 PDEBUG(DBG_IO, "IO debugging is enabled [video]"); 1659 PDEBUG(DBG_PROBE, "PROBE debugging is enabled [video]"); 1660 PDEBUG(DBG_MMAP, "MMAP debugging is enabled [video]"); 1661 1662 /* disable planar mode support unless compression enabled */ 1663 if (isoc_mode != ISOC_MODE_COMPRESS) { 1664 /* FIXME : not the right way to set supported flag */ 1665 usbvision_v4l2_format[6].supported = 0; /* V4L2_PIX_FMT_YVU420 */ 1666 usbvision_v4l2_format[7].supported = 0; /* V4L2_PIX_FMT_YUV422P */ 1667 } 1668 1669 err_code = usb_register(&usbvision_driver); 1670 1671 if (err_code == 0) { 1672 printk(KERN_INFO DRIVER_DESC " : " USBVISION_VERSION_STRING "\n"); 1673 PDEBUG(DBG_PROBE, "success"); 1674 } 1675 return err_code; 1676} 1677 1678static void __exit usbvision_exit(void) 1679{ 1680 PDEBUG(DBG_PROBE, ""); 1681 1682 usb_deregister(&usbvision_driver); 1683 PDEBUG(DBG_PROBE, "success"); 1684} 1685 1686module_init(usbvision_init); 1687module_exit(usbvision_exit); 1688 1689/* 1690 * Overrides for Emacs so that we follow Linus's tabbing style. 1691 * --------------------------------------------------------------------------- 1692 * Local variables: 1693 * c-basic-offset: 8 1694 * End: 1695 */ 1696