usbvision.h revision 1de1bf06330920802d3b7646a088965bdd918356
1/* 2 * USBVISION.H 3 * usbvision header file 4 * 5 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> 6 * Dwaine Garden <dwainegarden@rogers.com> 7 * 8 * 9 * Report problems to v4l MailingList : http://www.redhat.com/mailman/listinfo/video4linux-list 10 * 11 * This module is part of usbvision driver project. 12 * Updates to driver completed by Dwaine P. Garden 13 * v4l2 conversion by Thierry Merle <thierry.merle@free.fr> 14 * 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 28 */ 29 30 31#ifndef __LINUX_USBVISION_H 32#define __LINUX_USBVISION_H 33 34#include <linux/list.h> 35#include <linux/usb.h> 36#include <media/v4l2-common.h> 37#include <media/tuner.h> 38#include <linux/videodev2.h> 39 40#define USBVISION_DEBUG /* Turn on debug messages */ 41 42#ifndef VID_HARDWARE_USBVISION 43 #define VID_HARDWARE_USBVISION 34 /* USBVision Video Grabber */ 44#endif 45 46#define USBVISION_PWR_REG 0x00 47 #define USBVISION_SSPND_EN (1 << 1) 48 #define USBVISION_RES2 (1 << 2) 49 #define USBVISION_PWR_VID (1 << 5) 50 #define USBVISION_E2_EN (1 << 7) 51#define USBVISION_CONFIG_REG 0x01 52#define USBVISION_ADRS_REG 0x02 53#define USBVISION_ALTER_REG 0x03 54#define USBVISION_FORCE_ALTER_REG 0x04 55#define USBVISION_STATUS_REG 0x05 56#define USBVISION_IOPIN_REG 0x06 57 #define USBVISION_IO_1 (1 << 0) 58 #define USBVISION_IO_2 (1 << 1) 59 #define USBVISION_AUDIO_IN 0 60 #define USBVISION_AUDIO_TV 1 61 #define USBVISION_AUDIO_RADIO 2 62 #define USBVISION_AUDIO_MUTE 3 63#define USBVISION_SER_MODE 0x07 64#define USBVISION_SER_ADRS 0x08 65#define USBVISION_SER_CONT 0x09 66#define USBVISION_SER_DAT1 0x0A 67#define USBVISION_SER_DAT2 0x0B 68#define USBVISION_SER_DAT3 0x0C 69#define USBVISION_SER_DAT4 0x0D 70#define USBVISION_EE_DATA 0x0E 71#define USBVISION_EE_LSBAD 0x0F 72#define USBVISION_EE_CONT 0x10 73#define USBVISION_DRM_CONT 0x12 74 #define USBVISION_REF (1 << 0) 75 #define USBVISION_RES_UR (1 << 2) 76 #define USBVISION_RES_FDL (1 << 3) 77 #define USBVISION_RES_VDW (1 << 4) 78#define USBVISION_DRM_PRM1 0x13 79#define USBVISION_DRM_PRM2 0x14 80#define USBVISION_DRM_PRM3 0x15 81#define USBVISION_DRM_PRM4 0x16 82#define USBVISION_DRM_PRM5 0x17 83#define USBVISION_DRM_PRM6 0x18 84#define USBVISION_DRM_PRM7 0x19 85#define USBVISION_DRM_PRM8 0x1A 86#define USBVISION_VIN_REG1 0x1B 87 #define USBVISION_8_422_SYNC 0x01 88 #define USBVISION_16_422_SYNC 0x02 89 #define USBVISION_VSNC_POL (1 << 3) 90 #define USBVISION_HSNC_POL (1 << 4) 91 #define USBVISION_FID_POL (1 << 5) 92 #define USBVISION_HVALID_PO (1 << 6) 93 #define USBVISION_VCLK_POL (1 << 7) 94#define USBVISION_VIN_REG2 0x1C 95 #define USBVISION_AUTO_FID (1 << 0) 96 #define USBVISION_NONE_INTER (1 << 1) 97 #define USBVISION_NOHVALID (1 << 2) 98 #define USBVISION_UV_ID (1 << 3) 99 #define USBVISION_FIX_2C (1 << 4) 100 #define USBVISION_SEND_FID (1 << 5) 101 #define USBVISION_KEEP_BLANK (1 << 7) 102#define USBVISION_LXSIZE_I 0x1D 103#define USBVISION_MXSIZE_I 0x1E 104#define USBVISION_LYSIZE_I 0x1F 105#define USBVISION_MYSIZE_I 0x20 106#define USBVISION_LX_OFFST 0x21 107#define USBVISION_MX_OFFST 0x22 108#define USBVISION_LY_OFFST 0x23 109#define USBVISION_MY_OFFST 0x24 110#define USBVISION_FRM_RATE 0x25 111#define USBVISION_LXSIZE_O 0x26 112#define USBVISION_MXSIZE_O 0x27 113#define USBVISION_LYSIZE_O 0x28 114#define USBVISION_MYSIZE_O 0x29 115#define USBVISION_FILT_CONT 0x2A 116#define USBVISION_VO_MODE 0x2B 117#define USBVISION_INTRA_CYC 0x2C 118#define USBVISION_STRIP_SZ 0x2D 119#define USBVISION_FORCE_INTRA 0x2E 120#define USBVISION_FORCE_UP 0x2F 121#define USBVISION_BUF_THR 0x30 122#define USBVISION_DVI_YUV 0x31 123#define USBVISION_AUDIO_CONT 0x32 124#define USBVISION_AUD_PK_LEN 0x33 125#define USBVISION_BLK_PK_LEN 0x34 126#define USBVISION_PCM_THR1 0x38 127#define USBVISION_PCM_THR2 0x39 128#define USBVISION_DIST_THR_L 0x3A 129#define USBVISION_DIST_THR_H 0x3B 130#define USBVISION_MAX_DIST_L 0x3C 131#define USBVISION_MAX_DIST_H 0x3D 132#define USBVISION_OP_CODE 0x33 133 134#define MAX_BYTES_PER_PIXEL 4 135 136#define MIN_FRAME_WIDTH 64 137#define MAX_USB_WIDTH 320 //384 138#define MAX_FRAME_WIDTH 320 //384 /*streching sometimes causes crashes*/ 139 140#define MIN_FRAME_HEIGHT 48 141#define MAX_USB_HEIGHT 240 //288 142#define MAX_FRAME_HEIGHT 240 //288 /*Streching sometimes causes crashes*/ 143 144#define MAX_FRAME_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL) 145#define USBVISION_CLIPMASK_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) //bytesize of clipmask 146 147#define USBVISION_URB_FRAMES 32 148#define USBVISION_MAX_ISOC_PACKET_SIZE 959 // NT1003 Specs Document says 1023 149 150#define USBVISION_NUM_HEADERMARKER 20 151#define USBVISION_NUMFRAMES 3 /* Maximum number of frames an application can get */ 152#define USBVISION_NUMSBUF 2 /* Dimensioning the USB S buffering */ 153 154#define USBVISION_POWEROFF_TIME 3 * (HZ) // 3 seconds 155 156 157#define FRAMERATE_MIN 0 158#define FRAMERATE_MAX 31 159 160enum { 161 ISOC_MODE_YUV422 = 0x03, 162 ISOC_MODE_YUV420 = 0x14, 163 ISOC_MODE_COMPRESS = 0x60, 164}; 165 166/* This macro restricts an int variable to an inclusive range */ 167#define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); } 168 169/* 170 * We use macros to do YUV -> RGB conversion because this is 171 * very important for speed and totally unimportant for size. 172 * 173 * YUV -> RGB Conversion 174 * --------------------- 175 * 176 * B = 1.164*(Y-16) + 2.018*(V-128) 177 * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128) 178 * R = 1.164*(Y-16) + 1.596*(U-128) 179 * 180 * If you fancy integer arithmetics (as you should), hear this: 181 * 182 * 65536*B = 76284*(Y-16) + 132252*(V-128) 183 * 65536*G = 76284*(Y-16) - 53281*(U-128) - 25625*(V-128) 184 * 65536*R = 76284*(Y-16) + 104595*(U-128) 185 * 186 * Make sure the output values are within [0..255] range. 187 */ 188#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x))) 189#define YUV_TO_RGB_BY_THE_BOOK(my,mu,mv,mr,mg,mb) { \ 190 int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \ 191 mm_y = (my) - 16; \ 192 mm_u = (mu) - 128; \ 193 mm_v = (mv) - 128; \ 194 mm_yc= mm_y * 76284; \ 195 mm_b = (mm_yc + 132252*mm_v ) >> 16; \ 196 mm_g = (mm_yc - 53281*mm_u - 25625*mm_v ) >> 16; \ 197 mm_r = (mm_yc + 104595*mm_u ) >> 16; \ 198 mb = LIMIT_RGB(mm_b); \ 199 mg = LIMIT_RGB(mm_g); \ 200 mr = LIMIT_RGB(mm_r); \ 201} 202 203/* Debugging aid */ 204#define USBVISION_SAY_AND_WAIT(what) { \ 205 wait_queue_head_t wq; \ 206 init_waitqueue_head(&wq); \ 207 printk(KERN_INFO "Say: %s\n", what); \ 208 interruptible_sleep_on_timeout (&wq, HZ*3); \ 209} 210 211/* 212 * This macro checks if usbvision is still operational. The 'usbvision' 213 * pointer must be valid, usbvision->dev must be valid, we are not 214 * removing the device and the device has not erred on us. 215 */ 216#define USBVISION_IS_OPERATIONAL(udevice) (\ 217 (udevice != NULL) && \ 218 ((udevice)->dev != NULL) && \ 219 ((udevice)->last_error == 0) && \ 220 (!(udevice)->remove_pending)) 221 222/* I2C structures */ 223struct i2c_algo_usb_data { 224 void *data; /* private data for lowlevel routines */ 225 int (*inb) (void *data, unsigned char addr, char *buf, short len); 226 int (*outb) (void *data, unsigned char addr, char *buf, short len); 227 228 /* local settings */ 229 int udelay; 230 int mdelay; 231 int timeout; 232}; 233 234#define I2C_USB_ADAP_MAX 16 235 236/* ----------------------------------------------------------------- */ 237/* usbvision video structures */ 238/* ----------------------------------------------------------------- */ 239enum ScanState { 240 ScanState_Scanning, /* Scanning for header */ 241 ScanState_Lines /* Parsing lines */ 242}; 243 244/* Completion states of the data parser */ 245enum ParseState { 246 ParseState_Continue, /* Just parse next item */ 247 ParseState_NextFrame, /* Frame done, send it to V4L */ 248 ParseState_Out, /* Not enough data for frame */ 249 ParseState_EndParse /* End parsing */ 250}; 251 252enum FrameState { 253 FrameState_Unused, /* Unused (no MCAPTURE) */ 254 FrameState_Ready, /* Ready to start grabbing */ 255 FrameState_Grabbing, /* In the process of being grabbed into */ 256 FrameState_Done, /* Finished grabbing, but not been synced yet */ 257 FrameState_DoneHold, /* Are syncing or reading */ 258 FrameState_Error, /* Something bad happened while processing */ 259}; 260 261/* stream states */ 262enum StreamState { 263 Stream_Off, /* Driver streaming is completely OFF */ 264 Stream_Idle, /* Driver streaming is ready to be put ON by the application */ 265 Stream_Interrupt, /* Driver streaming must be interrupted */ 266 Stream_On, /* Driver streaming is put ON by the application */ 267}; 268 269enum IsocState { 270 IsocState_InFrame, /* Isoc packet is member of frame */ 271 IsocState_NoFrame, /* Isoc packet is not member of any frame */ 272}; 273 274struct usb_device; 275 276struct usbvision_sbuf { 277 char *data; 278 struct urb *urb; 279}; 280 281#define USBVISION_MAGIC_1 0x55 282#define USBVISION_MAGIC_2 0xAA 283#define USBVISION_HEADER_LENGTH 0x0c 284#define USBVISION_SAA7111_ADDR 0x48 285#define USBVISION_SAA7113_ADDR 0x4a 286#define USBVISION_IIC_LRACK 0x20 287#define USBVISION_IIC_LRNACK 0x30 288#define USBVISION_FRAME_FORMAT_PARAM_INTRA (1<<7) 289 290struct usbvision_v4l2_format_st { 291 int supported; 292 int bytes_per_pixel; 293 int depth; 294 int format; 295 char *desc; 296}; 297#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format) 298 299struct usbvision_frame_header { 300 unsigned char magic_1; /* 0 magic */ 301 unsigned char magic_2; /* 1 magic */ 302 unsigned char headerLength; /* 2 */ 303 unsigned char frameNum; /* 3 */ 304 unsigned char framePhase; /* 4 */ 305 unsigned char frameLatency; /* 5 */ 306 unsigned char dataFormat; /* 6 */ 307 unsigned char formatParam; /* 7 */ 308 unsigned char frameWidthLo; /* 8 */ 309 unsigned char frameWidthHi; /* 9 */ 310 unsigned char frameHeightLo; /* 10 */ 311 unsigned char frameHeightHi; /* 11 */ 312 __u16 frameWidth; /* 8 - 9 after endian correction*/ 313 __u16 frameHeight; /* 10 - 11 after endian correction*/ 314}; 315 316/* tvnorms */ 317struct usbvision_tvnorm { 318 char *name; 319 v4l2_std_id id; 320 /* mode for saa7113h */ 321 int mode; 322}; 323 324struct usbvision_frame { 325 char *data; /* Frame buffer */ 326 struct usbvision_frame_header isocHeader; /* Header from stream */ 327 328 int width; /* Width application is expecting */ 329 int height; /* Height */ 330 int index; /* Frame index */ 331 int frmwidth; /* Width the frame actually is */ 332 int frmheight; /* Height */ 333 334 volatile int grabstate; /* State of grabbing */ 335 int scanstate; /* State of scanning */ 336 337 struct list_head frame; 338 339 int curline; /* Line of frame we're working on */ 340 341 long scanlength; /* uncompressed, raw data length of frame */ 342 long bytes_read; /* amount of scanlength that has been read from data */ 343 struct usbvision_v4l2_format_st v4l2_format; /* format the user needs*/ 344 int v4l2_linesize; /* bytes for one videoline*/ 345 struct timeval timestamp; 346 int sequence; // How many video frames we send to user 347}; 348 349#define CODEC_SAA7113 7113 350#define CODEC_SAA7111 7111 351#define BRIDGE_NT1003 1003 352#define BRIDGE_NT1004 1004 353#define BRIDGE_NT1005 1005 354 355struct usbvision_device_data_st { 356 int idVendor; 357 int idProduct; 358 int Interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */ 359 int Codec; 360 int VideoChannels; 361 __u64 VideoNorm; 362 int AudioChannels; 363 int Radio; 364 int vbi; 365 int Tuner; 366 int TunerType; 367 int Vin_Reg1; 368 int Vin_Reg2; 369 int X_Offset; 370 int Y_Offset; 371 int Dvi_yuv; 372 char *ModelString; 373}; 374 375/* Declared on usbvision-cards.c */ 376extern struct usbvision_device_data_st usbvision_device_data[]; 377extern struct usb_device_id usbvision_table[]; 378 379struct usb_usbvision { 380 struct video_device *vdev; /* Video Device */ 381 struct video_device *rdev; /* Radio Device */ 382 struct video_device *vbi; /* VBI Device */ 383 384 /* i2c Declaration Section*/ 385 struct i2c_adapter i2c_adap; 386 struct i2c_algo_usb_data i2c_algo; 387 struct i2c_client i2c_client; 388 389 struct urb *ctrlUrb; 390 unsigned char ctrlUrbBuffer[8]; 391 int ctrlUrbBusy; 392 struct usb_ctrlrequest ctrlUrbSetup; 393 wait_queue_head_t ctrlUrb_wq; // Processes waiting 394 struct semaphore ctrlUrbLock; 395 396 /* configuration part */ 397 int have_tuner; 398 int tuner_type; 399 int tuner_addr; 400 int bridgeType; // NT1003, NT1004, NT1005 401 int channel; 402 int radio; 403 int video_inputs; // # of inputs 404 unsigned long freq; 405 int AudioMute; 406 int AudioChannel; 407 int isocMode; // format of video data for the usb isoc-transfer 408 unsigned int nr; // Number of the device 409 410 /* Device structure */ 411 struct usb_device *dev; 412 unsigned char iface; /* Video interface number */ 413 unsigned char ifaceAltActive, ifaceAltInactive; /* Alt settings */ 414 unsigned char Vin_Reg2_Preset; 415 struct semaphore lock; 416 struct timer_list powerOffTimer; 417 struct work_struct powerOffWork; 418 int power; /* is the device powered on? */ 419 int user; /* user count for exclusive use */ 420 int initialized; /* Had we already sent init sequence? */ 421 int DevModel; /* What type of USBVISION device we got? */ 422 enum StreamState streaming; /* Are we streaming Isochronous? */ 423 int last_error; /* What calamity struck us? */ 424 int curwidth; /* width of the frame the device is currently set to*/ 425 int curheight; /* height of the frame the device is currently set to*/ 426 int stretch_width; /* stretch-factor for frame width (from usb to screen)*/ 427 int stretch_height; /* stretch-factor for frame height (from usb to screen)*/ 428 char *fbuf; /* Videodev buffer area for mmap*/ 429 int max_frame_size; /* Bytes in one video frame */ 430 int fbuf_size; /* Videodev buffer size */ 431 spinlock_t queue_lock; /* spinlock for protecting mods on inqueue and outqueue */ 432 struct list_head inqueue, outqueue; /* queued frame list and ready to dequeue frame list */ 433 wait_queue_head_t wait_frame; /* Processes waiting */ 434 wait_queue_head_t wait_stream; /* Processes waiting */ 435 struct usbvision_frame *curFrame; // pointer to current frame, set by usbvision_find_header 436 struct usbvision_frame frame[USBVISION_NUMFRAMES]; // frame buffer 437 struct usbvision_sbuf sbuf[USBVISION_NUMSBUF]; // S buffering 438 volatile int remove_pending; /* If set then about to exit */ 439 440 /* Scratch space from the Isochronous Pipe.*/ 441 unsigned char *scratch; 442 int scratch_read_ptr; 443 int scratch_write_ptr; 444 int scratch_headermarker[USBVISION_NUM_HEADERMARKER]; 445 int scratch_headermarker_read_ptr; 446 int scratch_headermarker_write_ptr; 447 enum IsocState isocstate; 448 struct usbvision_v4l2_format_st palette; 449 450 struct v4l2_capability vcap; /* Video capabilities */ 451 unsigned int ctl_input; /* selected input */ 452 struct usbvision_tvnorm *tvnorm; /* selected tv norm */ 453 unsigned char video_endp; /* 0x82 for USBVISION devices based */ 454 455 // Decompression stuff: 456 unsigned char *IntraFrameBuffer; /* Buffer for reference frame */ 457 int BlockPos; //for test only 458 int requestIntra; // 0 = normal; 1 = intra frame is requested; 459 int lastIsocFrameNum; // check for lost isoc frames 460 int isocPacketSize; // need to calculate usedBandwidth 461 int usedBandwidth; // used bandwidth 0-100%, need to set comprLevel 462 int comprLevel; // How strong (100) or weak (0) is compression 463 int lastComprLevel; // How strong (100) or weak (0) was compression 464 int usb_bandwidth; /* Mbit/s */ 465 466 /* Statistics that can be overlayed on the screen */ 467 unsigned long isocUrbCount; // How many URBs we received so far 468 unsigned long urb_length; /* Length of last URB */ 469 unsigned long isocDataCount; /* How many bytes we received */ 470 unsigned long header_count; /* How many frame headers we found */ 471 unsigned long scratch_ovf_count; /* How many times we overflowed scratch */ 472 unsigned long isocSkipCount; /* How many empty ISO packets received */ 473 unsigned long isocErrCount; /* How many bad ISO packets received */ 474 unsigned long isocPacketCount; // How many packets we totally got 475 unsigned long timeInIrq; // How long do we need for interrupt 476 int isocMeasureBandwidthCount; 477 int frame_num; // How many video frames we send to user 478 int maxStripLen; // How big is the biggest strip 479 int comprBlockPos; 480 int stripLenErrors; // How many times was BlockPos greater than StripLen 481 int stripMagicErrors; 482 int stripLineNumberErrors; 483 int ComprBlockTypes[4]; 484}; 485 486 487/* --------------------------------------------------------------- */ 488/* defined in usbvision-i2c.c */ 489/* i2c-algo-usb declaration */ 490/* --------------------------------------------------------------- */ 491 492int usbvision_i2c_usb_add_bus(struct i2c_adapter *); 493int usbvision_i2c_usb_del_bus(struct i2c_adapter *); 494 495static inline void *i2c_get_algo_usb_data (struct i2c_algo_usb_data *dev) 496{ 497 return dev->data; 498} 499 500static inline void i2c_set_algo_usb_data (struct i2c_algo_usb_data *dev, void *data) 501{ 502 dev->data = data; 503} 504 505 506/* ----------------------------------------------------------------------- */ 507/* usbvision specific I2C functions */ 508/* ----------------------------------------------------------------------- */ 509int usbvision_init_i2c(struct usb_usbvision *usbvision); 510void call_i2c_clients(struct usb_usbvision *usbvision, unsigned int cmd,void *arg); 511 512/* defined in usbvision-core.c */ 513void *usbvision_rvmalloc(unsigned long size); 514void usbvision_rvfree(void *mem, unsigned long size); 515int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg); 516int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, 517 unsigned char value); 518 519int usbvision_frames_alloc(struct usb_usbvision *usbvision); 520void usbvision_frames_free(struct usb_usbvision *usbvision); 521int usbvision_scratch_alloc(struct usb_usbvision *usbvision); 522void usbvision_scratch_free(struct usb_usbvision *usbvision); 523int usbvision_sbuf_alloc(struct usb_usbvision *usbvision); 524void usbvision_sbuf_free(struct usb_usbvision *usbvision); 525int usbvision_decompress_alloc(struct usb_usbvision *usbvision); 526void usbvision_decompress_free(struct usb_usbvision *usbvision); 527 528int usbvision_setup(struct usb_usbvision *usbvision,int format); 529int usbvision_init_isoc(struct usb_usbvision *usbvision); 530int usbvision_restart_isoc(struct usb_usbvision *usbvision); 531void usbvision_stop_isoc(struct usb_usbvision *usbvision); 532 533int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel); 534int usbvision_audio_off(struct usb_usbvision *usbvision); 535 536int usbvision_begin_streaming(struct usb_usbvision *usbvision); 537void usbvision_empty_framequeues(struct usb_usbvision *dev); 538int usbvision_stream_interrupt(struct usb_usbvision *dev); 539 540int usbvision_muxsel(struct usb_usbvision *usbvision, int channel); 541int usbvision_set_input(struct usb_usbvision *usbvision); 542int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height); 543 544void usbvision_init_powerOffTimer(struct usb_usbvision *usbvision); 545void usbvision_set_powerOffTimer(struct usb_usbvision *usbvision); 546void usbvision_reset_powerOffTimer(struct usb_usbvision *usbvision); 547int usbvision_power_off(struct usb_usbvision *usbvision); 548int usbvision_power_on(struct usb_usbvision *usbvision); 549 550#endif /* __LINUX_USBVISION_H */ 551 552/* 553 * Overrides for Emacs so that we follow Linus's tabbing style. 554 * --------------------------------------------------------------------------- 555 * Local variables: 556 * c-basic-offset: 8 557 * End: 558 */ 559