LXR linux/drivers/staging/media/usbvision/usbvision.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * USBVISION.H
   4 *  usbvision header file
   5 *
   6 * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
   7 *                         Dwaine Garden <dwainegarden@rogers.com>
   8 *
   9 * Report problems to v4l MailingList: linux-media@vger.kernel.org
  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
  16
  17#ifndef __LINUX_USBVISION_H
  18#define __LINUX_USBVISION_H
  19
  20#include <linux/list.h>
  21#include <linux/usb.h>
  22#include <linux/i2c.h>
  23#include <linux/mutex.h>
  24#include <media/v4l2-device.h>
  25#include <media/v4l2-ctrls.h>
  26#include <media/tuner.h>
  27#include <linux/videodev2.h>
  28
  29#define USBVISION_DEBUG         /* Turn on debug messages */
  30
  31#define USBVISION_PWR_REG               0x00
  32        #define USBVISION_SSPND_EN              (1 << 1)
  33        #define USBVISION_RES2                  (1 << 2)
  34        #define USBVISION_PWR_VID               (1 << 5)
  35        #define USBVISION_E2_EN                 (1 << 7)
  36#define USBVISION_CONFIG_REG            0x01
  37#define USBVISION_ADRS_REG              0x02
  38#define USBVISION_ALTER_REG             0x03
  39#define USBVISION_FORCE_ALTER_REG       0x04
  40#define USBVISION_STATUS_REG            0x05
  41#define USBVISION_IOPIN_REG             0x06
  42        #define USBVISION_IO_1                  (1 << 0)
  43        #define USBVISION_IO_2                  (1 << 1)
  44        #define USBVISION_AUDIO_IN              0
  45        #define USBVISION_AUDIO_TV              1
  46        #define USBVISION_AUDIO_RADIO           2
  47        #define USBVISION_AUDIO_MUTE            3
  48#define USBVISION_SER_MODE              0x07
  49        #define USBVISION_CLK_OUT               (1 << 0)
  50        #define USBVISION_DAT_IO                (1 << 1)
  51        #define USBVISION_SENS_OUT              (1 << 2)
  52        #define USBVISION_SER_MODE_SOFT         (0 << 4)
  53        #define USBVISION_SER_MODE_SIO          (1 << 4)
  54#define USBVISION_SER_ADRS              0x08
  55#define USBVISION_SER_CONT              0x09
  56#define USBVISION_SER_DAT1              0x0A
  57#define USBVISION_SER_DAT2              0x0B
  58#define USBVISION_SER_DAT3              0x0C
  59#define USBVISION_SER_DAT4              0x0D
  60#define USBVISION_EE_DATA               0x0E
  61#define USBVISION_EE_LSBAD              0x0F
  62#define USBVISION_EE_CONT               0x10
  63#define USBVISION_DRM_CONT                      0x12
  64        #define USBVISION_REF                   (1 << 0)
  65        #define USBVISION_RES_UR                (1 << 2)
  66        #define USBVISION_RES_FDL               (1 << 3)
  67        #define USBVISION_RES_VDW               (1 << 4)
  68#define USBVISION_DRM_PRM1              0x13
  69#define USBVISION_DRM_PRM2              0x14
  70#define USBVISION_DRM_PRM3              0x15
  71#define USBVISION_DRM_PRM4              0x16
  72#define USBVISION_DRM_PRM5              0x17
  73#define USBVISION_DRM_PRM6              0x18
  74#define USBVISION_DRM_PRM7              0x19
  75#define USBVISION_DRM_PRM8              0x1A
  76#define USBVISION_VIN_REG1              0x1B
  77        #define USBVISION_8_422_SYNC            0x01
  78        #define USBVISION_16_422_SYNC           0x02
  79        #define USBVISION_VSNC_POL              (1 << 3)
  80        #define USBVISION_HSNC_POL              (1 << 4)
  81        #define USBVISION_FID_POL               (1 << 5)
  82        #define USBVISION_HVALID_PO             (1 << 6)
  83        #define USBVISION_VCLK_POL              (1 << 7)
  84#define USBVISION_VIN_REG2              0x1C
  85        #define USBVISION_AUTO_FID              (1 << 0)
  86        #define USBVISION_NONE_INTER            (1 << 1)
  87        #define USBVISION_NOHVALID              (1 << 2)
  88        #define USBVISION_UV_ID                 (1 << 3)
  89        #define USBVISION_FIX_2C                (1 << 4)
  90        #define USBVISION_SEND_FID              (1 << 5)
  91        #define USBVISION_KEEP_BLANK            (1 << 7)
  92#define USBVISION_LXSIZE_I              0x1D
  93#define USBVISION_MXSIZE_I              0x1E
  94#define USBVISION_LYSIZE_I              0x1F
  95#define USBVISION_MYSIZE_I              0x20
  96#define USBVISION_LX_OFFST              0x21
  97#define USBVISION_MX_OFFST              0x22
  98#define USBVISION_LY_OFFST              0x23
  99#define USBVISION_MY_OFFST              0x24
 100#define USBVISION_FRM_RATE              0x25
 101#define USBVISION_LXSIZE_O              0x26
 102#define USBVISION_MXSIZE_O              0x27
 103#define USBVISION_LYSIZE_O              0x28
 104#define USBVISION_MYSIZE_O              0x29
 105#define USBVISION_FILT_CONT             0x2A
 106#define USBVISION_VO_MODE               0x2B
 107#define USBVISION_INTRA_CYC             0x2C
 108#define USBVISION_STRIP_SZ              0x2D
 109#define USBVISION_FORCE_INTRA           0x2E
 110#define USBVISION_FORCE_UP              0x2F
 111#define USBVISION_BUF_THR               0x30
 112#define USBVISION_DVI_YUV               0x31
 113#define USBVISION_AUDIO_CONT            0x32
 114#define USBVISION_AUD_PK_LEN            0x33
 115#define USBVISION_BLK_PK_LEN            0x34
 116#define USBVISION_PCM_THR1              0x38
 117#define USBVISION_PCM_THR2              0x39
 118#define USBVISION_DIST_THR_L            0x3A
 119#define USBVISION_DIST_THR_H            0x3B
 120#define USBVISION_MAX_DIST_L            0x3C
 121#define USBVISION_MAX_DIST_H            0x3D
 122#define USBVISION_OP_CODE               0x33
 123
 124#define MAX_BYTES_PER_PIXEL             4
 125
 126#define MIN_FRAME_WIDTH                 64
 127#define MAX_USB_WIDTH                   320  /* 384 */
 128#define MAX_FRAME_WIDTH                 320  /* 384 */                  /* stretching sometimes causes crashes*/
 129
 130#define MIN_FRAME_HEIGHT                48
 131#define MAX_USB_HEIGHT                  240  /* 288 */
 132#define MAX_FRAME_HEIGHT                240  /* 288 */                  /* Stretching sometimes causes crashes*/
 133
 134#define MAX_FRAME_SIZE                  (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
 135#define USBVISION_CLIPMASK_SIZE         (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) /* bytesize of clipmask */
 136
 137#define USBVISION_URB_FRAMES            32
 138
 139#define USBVISION_NUM_HEADERMARKER      20
 140#define USBVISION_NUMFRAMES             3  /* Maximum number of frames an application can get */
 141#define USBVISION_NUMSBUF               2 /* Dimensioning the USB S buffering */
 142
 143#define USBVISION_POWEROFF_TIME         (3 * HZ)                /* 3 seconds */
 144
 145
 146#define FRAMERATE_MIN   0
 147#define FRAMERATE_MAX   31
 148
 149enum {
 150        ISOC_MODE_YUV422 = 0x03,
 151        ISOC_MODE_YUV420 = 0x14,
 152        ISOC_MODE_COMPRESS = 0x60,
 153};
 154
 155/* This macro restricts an int variable to an inclusive range */
 156#define RESTRICT_TO_RANGE(v, mi, ma) \
 157        { if (((int)v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 158
 159/*
 160 * We use macros to do YUV -> RGB conversion because this is
 161 * very important for speed and totally unimportant for size.
 162 *
 163 * YUV -> RGB Conversion
 164 * ---------------------
 165 *
 166 * B = 1.164*(Y-16)                 + 2.018*(V-128)
 167 * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
 168 * R = 1.164*(Y-16) + 1.596*(U-128)
 169 *
 170 * If you fancy integer arithmetic (as you should), hear this:
 171 *
 172 * 65536*B = 76284*(Y-16)                 + 132252*(V-128)
 173 * 65536*G = 76284*(Y-16) -  53281*(U-128) -  25625*(V-128)
 174 * 65536*R = 76284*(Y-16) + 104595*(U-128)
 175 *
 176 * Make sure the output values are within [0..255] range.
 177 */
 178#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
 179#define YUV_TO_RGB_BY_THE_BOOK(my, mu, mv, mr, mg, mb) { \
 180        int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
 181        mm_y = (my) - 16; \
 182        mm_u = (mu) - 128; \
 183        mm_v = (mv) - 128; \
 184        mm_yc = mm_y * 76284; \
 185        mm_b = (mm_yc + 132252 * mm_v) >> 16; \
 186        mm_g = (mm_yc - 53281 * mm_u - 25625 * mm_v) >> 16; \
 187        mm_r = (mm_yc + 104595 * mm_u) >> 16; \
 188        mb = LIMIT_RGB(mm_b); \
 189        mg = LIMIT_RGB(mm_g); \
 190        mr = LIMIT_RGB(mm_r); \
 191}
 192
 193/*
 194 * This macro checks if usbvision is still operational. The 'usbvision'
 195 * pointer must be valid, usbvision->dev must be valid, we are not
 196 * removing the device and the device has not erred on us.
 197 */
 198#define USBVISION_IS_OPERATIONAL(udevice) (\
 199        (udevice != NULL) && \
 200        ((udevice)->dev != NULL) && \
 201        ((udevice)->last_error == 0) && \
 202        (!(udevice)->remove_pending))
 203
 204#define I2C_USB_ADAP_MAX        16
 205
 206#define USBVISION_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_M)
 207
 208/* ----------------------------------------------------------------- */
 209/* usbvision video structures                                        */
 210/* ----------------------------------------------------------------- */
 211enum scan_state {
 212        scan_state_scanning,    /* Scanning for header */
 213        scan_state_lines        /* Parsing lines */
 214};
 215
 216/* Completion states of the data parser */
 217enum parse_state {
 218        parse_state_continue,   /* Just parse next item */
 219        parse_state_next_frame, /* Frame done, send it to V4L */
 220        parse_state_out,        /* Not enough data for frame */
 221        parse_state_end_parse   /* End parsing */
 222};
 223
 224enum frame_state {
 225        frame_state_unused,     /* Unused (no MCAPTURE) */
 226        frame_state_ready,      /* Ready to start grabbing */
 227        frame_state_grabbing,   /* In the process of being grabbed into */
 228        frame_state_done,       /* Finished grabbing, but not been synced yet */
 229        frame_state_done_hold,  /* Are syncing or reading */
 230        frame_state_error,      /* Something bad happened while processing */
 231};
 232
 233/* stream states */
 234enum stream_state {
 235        stream_off,             /* Driver streaming is completely OFF */
 236        stream_idle,            /* Driver streaming is ready to be put ON by the application */
 237        stream_interrupt,       /* Driver streaming must be interrupted */
 238        stream_on,              /* Driver streaming is put ON by the application */
 239};
 240
 241enum isoc_state {
 242        isoc_state_in_frame,    /* Isoc packet is member of frame */
 243        isoc_state_no_frame,    /* Isoc packet is not member of any frame */
 244};
 245
 246struct usb_device;
 247
 248struct usbvision_sbuf {
 249        char *data;
 250        struct urb *urb;
 251};
 252
 253#define USBVISION_MAGIC_1                       0x55
 254#define USBVISION_MAGIC_2                       0xAA
 255#define USBVISION_HEADER_LENGTH                 0x0c
 256#define USBVISION_SAA7111_ADDR                  0x48
 257#define USBVISION_SAA7113_ADDR                  0x4a
 258#define USBVISION_IIC_LRACK                     0x20
 259#define USBVISION_IIC_LRNACK                    0x30
 260#define USBVISION_FRAME_FORMAT_PARAM_INTRA      (1<<7)
 261
 262struct usbvision_v4l2_format_st {
 263        int             supported;
 264        int             bytes_per_pixel;
 265        int             depth;
 266        int             format;
 267};
 268#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
 269
 270struct usbvision_frame_header {
 271        unsigned char magic_1;                          /* 0 magic */
 272        unsigned char magic_2;                          /* 1  magic */
 273        unsigned char header_length;                    /* 2 */
 274        unsigned char frame_num;                        /* 3 */
 275        unsigned char frame_phase;                      /* 4 */
 276        unsigned char frame_latency;                    /* 5 */
 277        unsigned char data_format;                      /* 6 */
 278        unsigned char format_param;                     /* 7 */
 279        unsigned char frame_width_lo;                   /* 8 */
 280        unsigned char frame_width_hi;                   /* 9 */
 281        unsigned char frame_height_lo;                  /* 10 */
 282        unsigned char frame_height_hi;                  /* 11 */
 283        __u16 frame_width;                              /* 8 - 9 after endian correction*/
 284        __u16 frame_height;                             /* 10 - 11 after endian correction*/
 285};
 286
 287struct usbvision_frame {
 288        char *data;                                     /* Frame buffer */
 289        struct usbvision_frame_header isoc_header;      /* Header from stream */
 290
 291        int width;                                      /* Width application is expecting */
 292        int height;                                     /* Height */
 293        int index;                                      /* Frame index */
 294        int frmwidth;                                   /* Width the frame actually is */
 295        int frmheight;                                  /* Height */
 296
 297        volatile int grabstate;                         /* State of grabbing */
 298        int scanstate;                                  /* State of scanning */
 299
 300        struct list_head frame;
 301
 302        int curline;                                    /* Line of frame we're working on */
 303
 304        long scanlength;                                /* uncompressed, raw data length of frame */
 305        long bytes_read;                                /* amount of scanlength that has been read from data */
 306        struct usbvision_v4l2_format_st v4l2_format;    /* format the user needs*/
 307        int v4l2_linesize;                              /* bytes for one videoline*/
 308        u64 ts;
 309        int sequence;                                   /* How many video frames we send to user */
 310};
 311
 312#define CODEC_SAA7113   7113
 313#define CODEC_SAA7111   7111
 314#define CODEC_WEBCAM    3000
 315#define BRIDGE_NT1003   1003
 316#define BRIDGE_NT1004   1004
 317#define BRIDGE_NT1005   1005
 318
 319struct usbvision_device_data_st {
 320        __u64 video_norm;
 321        const char *model_string;
 322        int interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
 323        __u16 codec;
 324        unsigned video_channels:3;
 325        unsigned audio_channels:2;
 326        unsigned radio:1;
 327        unsigned vbi:1;
 328        unsigned tuner:1;
 329        unsigned vin_reg1_override:1;   /* Override default value with */
 330        unsigned vin_reg2_override:1;   /* vin_reg1, vin_reg2, etc. */
 331        unsigned dvi_yuv_override:1;
 332        __u8 vin_reg1;
 333        __u8 vin_reg2;
 334        __u8 dvi_yuv;
 335        __u8 tuner_type;
 336        __s16 x_offset;
 337        __s16 y_offset;
 338};
 339
 340/* Declared on usbvision-cards.c */
 341extern struct usbvision_device_data_st usbvision_device_data[];
 342extern struct usb_device_id usbvision_table[];
 343
 344struct usb_usbvision {
 345        struct v4l2_device v4l2_dev;
 346        struct v4l2_ctrl_handler hdl;
 347        struct video_device vdev;                                       /* Video Device */
 348        struct video_device rdev;                                       /* Radio Device */
 349
 350        /* i2c Declaration Section*/
 351        struct i2c_adapter i2c_adap;
 352        int registered_i2c;
 353
 354        struct urb *ctrl_urb;
 355        unsigned char ctrl_urb_buffer[8];
 356        int ctrl_urb_busy;
 357        struct usb_ctrlrequest ctrl_urb_setup;
 358
 359        /* configuration part */
 360        int have_tuner;
 361        int tuner_type;
 362        int bridge_type;                                                /* NT1003, NT1004, NT1005 */
 363        int radio;
 364        int video_inputs;                                               /* # of inputs */
 365        unsigned long radio_freq;
 366        unsigned long tv_freq;
 367        int audio_mute;
 368        int audio_channel;
 369        int isoc_mode;                                                  /* format of video data for the usb isoc-transfer */
 370        unsigned int nr;                                                /* Number of the device */
 371
 372        /* Device structure */
 373        struct usb_device *dev;
 374        /* usb transfer */
 375        int num_alt;            /* Number of alternative settings */
 376        unsigned int *alt_max_pkt_size; /* array of max_packet_size */
 377        unsigned char iface;                                            /* Video interface number */
 378        unsigned char iface_alt;                                        /* Alt settings */
 379        unsigned char vin_reg2_preset;
 380        struct mutex v4l2_lock;
 381        int power;                                                      /* is the device powered on? */
 382        int user;                                                       /* user count for exclusive use */
 383        int initialized;                                                /* Had we already sent init sequence? */
 384        int dev_model;                                                  /* What type of USBVISION device we got? */
 385        enum stream_state streaming;                                    /* Are we streaming Isochronous? */
 386        int last_error;                                                 /* What calamity struck us? */
 387        int curwidth;                                                   /* width of the frame the device is currently set to*/
 388        int curheight;                                                  /* height of the frame the device is currently set to*/
 389        int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 390        int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 391        char *fbuf;                                                     /* Videodev buffer area for mmap*/
 392        int max_frame_size;                                             /* Bytes in one video frame */
 393        int fbuf_size;                                                  /* Videodev buffer size */
 394        spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 395        struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 396        wait_queue_head_t wait_frame;                                   /* Processes waiting */
 397        wait_queue_head_t wait_stream;                                  /* Processes waiting */
 398        struct usbvision_frame *cur_frame;                              /* pointer to current frame, set by usbvision_find_header */
 399        struct usbvision_frame frame[USBVISION_NUMFRAMES];              /* frame buffer */
 400        int num_frames;                                                 /* number of frames allocated */
 401        struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  /* S buffering */
 402        volatile int remove_pending;                                    /* If set then about to exit */
 403
 404        /* Scratch space from the Isochronous Pipe.*/
 405        unsigned char *scratch;
 406        int scratch_read_ptr;
 407        int scratch_write_ptr;
 408        int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 409        int scratch_headermarker_read_ptr;
 410        int scratch_headermarker_write_ptr;
 411        enum isoc_state isocstate;
 412        struct usbvision_v4l2_format_st palette;
 413
 414        struct v4l2_capability vcap;                                    /* Video capabilities */
 415        unsigned int ctl_input;                                         /* selected input */
 416        v4l2_std_id tvnorm_id;                                          /* selected tv norm */
 417        unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 418
 419        /* Decompression stuff: */
 420        unsigned char *intra_frame_buffer;                              /* Buffer for reference frame */
 421        int block_pos;                                                  /* for test only */
 422        int request_intra;                                              /* 0 = normal; 1 = intra frame is requested; */
 423        int last_isoc_frame_num;                                        /* check for lost isoc frames */
 424        int isoc_packet_size;                                           /* need to calculate used_bandwidth */
 425        int used_bandwidth;                                             /* used bandwidth 0-100%, need to set compr_level */
 426        int compr_level;                                                /* How strong (100) or weak (0) is compression */
 427        int last_compr_level;                                           /* How strong (100) or weak (0) was compression */
 428        int usb_bandwidth;                                              /* Mbit/s */
 429
 430        /* Statistics that can be overlaid on the screen */
 431        unsigned long isoc_urb_count;                   /* How many URBs we received so far */
 432        unsigned long urb_length;                       /* Length of last URB */
 433        unsigned long isoc_data_count;                  /* How many bytes we received */
 434        unsigned long header_count;                     /* How many frame headers we found */
 435        unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 436        unsigned long isoc_skip_count;                  /* How many empty ISO packets received */
 437        unsigned long isoc_err_count;                   /* How many bad ISO packets received */
 438        unsigned long isoc_packet_count;                /* How many packets we totally got */
 439        int isoc_measure_bandwidth_count;
 440        int frame_num;                                  /* How many video frames we send to user */
 441        int max_strip_len;                              /* How big is the biggest strip */
 442        int comprblock_pos;
 443        int strip_len_errors;                           /* How many times was block_pos greater than strip_len */
 444        int strip_magic_errors;
 445        int strip_line_number_errors;
 446        int compr_block_types[4];
 447};
 448
 449static inline struct usb_usbvision *to_usbvision(struct v4l2_device *v4l2_dev)
 450{
 451        return container_of(v4l2_dev, struct usb_usbvision, v4l2_dev);
 452}
 453
 454#define call_all(usbvision, o, f, args...) \
 455        v4l2_device_call_all(&usbvision->v4l2_dev, 0, o, f, ##args)
 456
 457/* --------------------------------------------------------------- */
 458/* defined in usbvision-i2c.c                                      */
 459/* i2c-algo-usb declaration                                        */
 460/* --------------------------------------------------------------- */
 461
 462/* ----------------------------------------------------------------------- */
 463/* usbvision specific I2C functions                                        */
 464/* ----------------------------------------------------------------------- */
 465int usbvision_i2c_register(struct usb_usbvision *usbvision);
 466int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
 467
 468/* defined in usbvision-core.c                                      */
 469int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 470int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 471                        unsigned char value);
 472
 473int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 474void usbvision_frames_free(struct usb_usbvision *usbvision);
 475int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 476void usbvision_scratch_free(struct usb_usbvision *usbvision);
 477int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 478void usbvision_decompress_free(struct usb_usbvision *usbvision);
 479
 480int usbvision_setup(struct usb_usbvision *usbvision, int format);
 481int usbvision_init_isoc(struct usb_usbvision *usbvision);
 482int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 483void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 484int usbvision_set_alternate(struct usb_usbvision *dev);
 485
 486int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel);
 487int usbvision_audio_off(struct usb_usbvision *usbvision);
 488
 489int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 490void usbvision_empty_framequeues(struct usb_usbvision *dev);
 491int usbvision_stream_interrupt(struct usb_usbvision *dev);
 492
 493int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 494int usbvision_set_input(struct usb_usbvision *usbvision);
 495int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 496
 497int usbvision_power_off(struct usb_usbvision *usbvision);
 498int usbvision_power_on(struct usb_usbvision *usbvision);
 499
 500#endif                                                                  /* __LINUX_USBVISION_H */
 501