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

   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: 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 * 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 <linux/i2c.h>
  37#include <linux/mutex.h>
  38#include <media/v4l2-device.h>
  39#include <media/tuner.h>
  40#include <linux/videodev2.h>
  41
  42#define USBVISION_DEBUG         /* Turn on debug messages */
  43
  44#define USBVISION_PWR_REG               0x00
  45        #define USBVISION_SSPND_EN              (1 << 1)
  46        #define USBVISION_RES2                  (1 << 2)
  47        #define USBVISION_PWR_VID               (1 << 5)
  48        #define USBVISION_E2_EN                 (1 << 7)
  49#define USBVISION_CONFIG_REG            0x01
  50#define USBVISION_ADRS_REG              0x02
  51#define USBVISION_ALTER_REG             0x03
  52#define USBVISION_FORCE_ALTER_REG       0x04
  53#define USBVISION_STATUS_REG            0x05
  54#define USBVISION_IOPIN_REG             0x06
  55        #define USBVISION_IO_1                  (1 << 0)
  56        #define USBVISION_IO_2                  (1 << 1)
  57        #define USBVISION_AUDIO_IN              0
  58        #define USBVISION_AUDIO_TV              1
  59        #define USBVISION_AUDIO_RADIO           2
  60        #define USBVISION_AUDIO_MUTE            3
  61#define USBVISION_SER_MODE              0x07
  62        #define USBVISION_CLK_OUT               (1 << 0)
  63        #define USBVISION_DAT_IO                (1 << 1)
  64        #define USBVISION_SENS_OUT              (1 << 2)
  65        #define USBVISION_SER_MODE_SOFT         (0 << 4)
  66        #define USBVISION_SER_MODE_SIO          (1 << 4)
  67#define USBVISION_SER_ADRS              0x08
  68#define USBVISION_SER_CONT              0x09
  69#define USBVISION_SER_DAT1              0x0A
  70#define USBVISION_SER_DAT2              0x0B
  71#define USBVISION_SER_DAT3              0x0C
  72#define USBVISION_SER_DAT4              0x0D
  73#define USBVISION_EE_DATA               0x0E
  74#define USBVISION_EE_LSBAD              0x0F
  75#define USBVISION_EE_CONT               0x10
  76#define USBVISION_DRM_CONT                      0x12
  77        #define USBVISION_REF                   (1 << 0)
  78        #define USBVISION_RES_UR                (1 << 2)
  79        #define USBVISION_RES_FDL               (1 << 3)
  80        #define USBVISION_RES_VDW               (1 << 4)
  81#define USBVISION_DRM_PRM1              0x13
  82#define USBVISION_DRM_PRM2              0x14
  83#define USBVISION_DRM_PRM3              0x15
  84#define USBVISION_DRM_PRM4              0x16
  85#define USBVISION_DRM_PRM5              0x17
  86#define USBVISION_DRM_PRM6              0x18
  87#define USBVISION_DRM_PRM7              0x19
  88#define USBVISION_DRM_PRM8              0x1A
  89#define USBVISION_VIN_REG1              0x1B
  90        #define USBVISION_8_422_SYNC            0x01
  91        #define USBVISION_16_422_SYNC           0x02
  92        #define USBVISION_VSNC_POL              (1 << 3)
  93        #define USBVISION_HSNC_POL              (1 << 4)
  94        #define USBVISION_FID_POL               (1 << 5)
  95        #define USBVISION_HVALID_PO             (1 << 6)
  96        #define USBVISION_VCLK_POL              (1 << 7)
  97#define USBVISION_VIN_REG2              0x1C
  98        #define USBVISION_AUTO_FID              (1 << 0)
  99        #define USBVISION_NONE_INTER            (1 << 1)
 100        #define USBVISION_NOHVALID              (1 << 2)
 101        #define USBVISION_UV_ID                 (1 << 3)
 102        #define USBVISION_FIX_2C                (1 << 4)
 103        #define USBVISION_SEND_FID              (1 << 5)
 104        #define USBVISION_KEEP_BLANK            (1 << 7)
 105#define USBVISION_LXSIZE_I              0x1D
 106#define USBVISION_MXSIZE_I              0x1E
 107#define USBVISION_LYSIZE_I              0x1F
 108#define USBVISION_MYSIZE_I              0x20
 109#define USBVISION_LX_OFFST              0x21
 110#define USBVISION_MX_OFFST              0x22
 111#define USBVISION_LY_OFFST              0x23
 112#define USBVISION_MY_OFFST              0x24
 113#define USBVISION_FRM_RATE              0x25
 114#define USBVISION_LXSIZE_O              0x26
 115#define USBVISION_MXSIZE_O              0x27
 116#define USBVISION_LYSIZE_O              0x28
 117#define USBVISION_MYSIZE_O              0x29
 118#define USBVISION_FILT_CONT             0x2A
 119#define USBVISION_VO_MODE               0x2B
 120#define USBVISION_INTRA_CYC             0x2C
 121#define USBVISION_STRIP_SZ              0x2D
 122#define USBVISION_FORCE_INTRA           0x2E
 123#define USBVISION_FORCE_UP              0x2F
 124#define USBVISION_BUF_THR               0x30
 125#define USBVISION_DVI_YUV               0x31
 126#define USBVISION_AUDIO_CONT            0x32
 127#define USBVISION_AUD_PK_LEN            0x33
 128#define USBVISION_BLK_PK_LEN            0x34
 129#define USBVISION_PCM_THR1              0x38
 130#define USBVISION_PCM_THR2              0x39
 131#define USBVISION_DIST_THR_L            0x3A
 132#define USBVISION_DIST_THR_H            0x3B
 133#define USBVISION_MAX_DIST_L            0x3C
 134#define USBVISION_MAX_DIST_H            0x3D
 135#define USBVISION_OP_CODE               0x33
 136
 137#define MAX_BYTES_PER_PIXEL             4
 138
 139#define MIN_FRAME_WIDTH                 64
 140#define MAX_USB_WIDTH                   320  /* 384 */
 141#define MAX_FRAME_WIDTH                 320  /* 384 */                  /* streching sometimes causes crashes*/
 142
 143#define MIN_FRAME_HEIGHT                48
 144#define MAX_USB_HEIGHT                  240  /* 288 */
 145#define MAX_FRAME_HEIGHT                240  /* 288 */                  /* Streching sometimes causes crashes*/
 146
 147#define MAX_FRAME_SIZE                  (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
 148#define USBVISION_CLIPMASK_SIZE         (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) /* bytesize of clipmask */
 149
 150#define USBVISION_URB_FRAMES            32
 151
 152#define USBVISION_NUM_HEADERMARKER      20
 153#define USBVISION_NUMFRAMES             3  /* Maximum number of frames an application can get */
 154#define USBVISION_NUMSBUF               2 /* Dimensioning the USB S buffering */
 155
 156#define USBVISION_POWEROFF_TIME         (3 * HZ)                /* 3 seconds */
 157
 158
 159#define FRAMERATE_MIN   0
 160#define FRAMERATE_MAX   31
 161
 162enum {
 163        ISOC_MODE_YUV422 = 0x03,
 164        ISOC_MODE_YUV420 = 0x14,
 165        ISOC_MODE_COMPRESS = 0x60,
 166};
 167
 168/* This macro restricts an int variable to an inclusive range */
 169#define RESTRICT_TO_RANGE(v, mi, ma) \
 170        { if (((int)v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
 171
 172/*
 173 * We use macros to do YUV -> RGB conversion because this is
 174 * very important for speed and totally unimportant for size.
 175 *
 176 * YUV -> RGB Conversion
 177 * ---------------------
 178 *
 179 * B = 1.164*(Y-16)                 + 2.018*(V-128)
 180 * G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
 181 * R = 1.164*(Y-16) + 1.596*(U-128)
 182 *
 183 * If you fancy integer arithmetics (as you should), hear this:
 184 *
 185 * 65536*B = 76284*(Y-16)                 + 132252*(V-128)
 186 * 65536*G = 76284*(Y-16) -  53281*(U-128) -  25625*(V-128)
 187 * 65536*R = 76284*(Y-16) + 104595*(U-128)
 188 *
 189 * Make sure the output values are within [0..255] range.
 190 */
 191#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
 192#define YUV_TO_RGB_BY_THE_BOOK(my, mu, mv, mr, mg, mb) { \
 193        int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
 194        mm_y = (my) - 16; \
 195        mm_u = (mu) - 128; \
 196        mm_v = (mv) - 128; \
 197        mm_yc = mm_y * 76284; \
 198        mm_b = (mm_yc + 132252 * mm_v) >> 16; \
 199        mm_g = (mm_yc - 53281 * mm_u - 25625 * mm_v) >> 16; \
 200        mm_r = (mm_yc + 104595 * mm_u) >> 16; \
 201        mb = LIMIT_RGB(mm_b); \
 202        mg = LIMIT_RGB(mm_g); \
 203        mr = LIMIT_RGB(mm_r); \
 204}
 205
 206/* Debugging aid */
 207#define USBVISION_SAY_AND_WAIT(what) { \
 208        wait_queue_head_t wq; \
 209        init_waitqueue_head(&wq); \
 210        printk(KERN_INFO "Say: %s\n", what); \
 211        interruptible_sleep_on_timeout(&wq, HZ * 3); \
 212}
 213
 214/*
 215 * This macro checks if usbvision is still operational. The 'usbvision'
 216 * pointer must be valid, usbvision->dev must be valid, we are not
 217 * removing the device and the device has not erred on us.
 218 */
 219#define USBVISION_IS_OPERATIONAL(udevice) (\
 220        (udevice != NULL) && \
 221        ((udevice)->dev != NULL) && \
 222        ((udevice)->last_error == 0) && \
 223        (!(udevice)->remove_pending))
 224
 225#define I2C_USB_ADAP_MAX        16
 226
 227#define USBVISION_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_M)
 228
 229/* ----------------------------------------------------------------- */
 230/* usbvision video structures                                        */
 231/* ----------------------------------------------------------------- */
 232enum scan_state {
 233        scan_state_scanning,    /* Scanning for header */
 234        scan_state_lines        /* Parsing lines */
 235};
 236
 237/* Completion states of the data parser */
 238enum parse_state {
 239        parse_state_continue,   /* Just parse next item */
 240        parse_state_next_frame, /* Frame done, send it to V4L */
 241        parse_state_out,        /* Not enough data for frame */
 242        parse_state_end_parse   /* End parsing */
 243};
 244
 245enum frame_state {
 246        frame_state_unused,     /* Unused (no MCAPTURE) */
 247        frame_state_ready,      /* Ready to start grabbing */
 248        frame_state_grabbing,   /* In the process of being grabbed into */
 249        frame_state_done,       /* Finished grabbing, but not been synced yet */
 250        frame_state_done_hold,  /* Are syncing or reading */
 251        frame_state_error,      /* Something bad happened while processing */
 252};
 253
 254/* stream states */
 255enum stream_state {
 256        stream_off,             /* Driver streaming is completely OFF */
 257        stream_idle,            /* Driver streaming is ready to be put ON by the application */
 258        stream_interrupt,       /* Driver streaming must be interrupted */
 259        stream_on,              /* Driver streaming is put ON by the application */
 260};
 261
 262enum isoc_state {
 263        isoc_state_in_frame,    /* Isoc packet is member of frame */
 264        isoc_state_no_frame,    /* Isoc packet is not member of any frame */
 265};
 266
 267struct usb_device;
 268
 269struct usbvision_sbuf {
 270        char *data;
 271        struct urb *urb;
 272};
 273
 274#define USBVISION_MAGIC_1                       0x55
 275#define USBVISION_MAGIC_2                       0xAA
 276#define USBVISION_HEADER_LENGTH                 0x0c
 277#define USBVISION_SAA7111_ADDR                  0x48
 278#define USBVISION_SAA7113_ADDR                  0x4a
 279#define USBVISION_IIC_LRACK                     0x20
 280#define USBVISION_IIC_LRNACK                    0x30
 281#define USBVISION_FRAME_FORMAT_PARAM_INTRA      (1<<7)
 282
 283struct usbvision_v4l2_format_st {
 284        int             supported;
 285        int             bytes_per_pixel;
 286        int             depth;
 287        int             format;
 288        char            *desc;
 289};
 290#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
 291
 292struct usbvision_frame_header {
 293        unsigned char magic_1;                          /* 0 magic */
 294        unsigned char magic_2;                          /* 1  magic */
 295        unsigned char header_length;                    /* 2 */
 296        unsigned char frame_num;                        /* 3 */
 297        unsigned char frame_phase;                      /* 4 */
 298        unsigned char frame_latency;                    /* 5 */
 299        unsigned char data_format;                      /* 6 */
 300        unsigned char format_param;                     /* 7 */
 301        unsigned char frame_width_lo;                   /* 8 */
 302        unsigned char frame_width_hi;                   /* 9 */
 303        unsigned char frame_height_lo;                  /* 10 */
 304        unsigned char frame_height_hi;                  /* 11 */
 305        __u16 frame_width;                              /* 8 - 9 after endian correction*/
 306        __u16 frame_height;                             /* 10 - 11 after endian correction*/
 307};
 308
 309struct usbvision_frame {
 310        char *data;                                     /* Frame buffer */
 311        struct usbvision_frame_header isoc_header;      /* Header from stream */
 312
 313        int width;                                      /* Width application is expecting */
 314        int height;                                     /* Height */
 315        int index;                                      /* Frame index */
 316        int frmwidth;                                   /* Width the frame actually is */
 317        int frmheight;                                  /* Height */
 318
 319        volatile int grabstate;                         /* State of grabbing */
 320        int scanstate;                                  /* State of scanning */
 321
 322        struct list_head frame;
 323
 324        int curline;                                    /* Line of frame we're working on */
 325
 326        long scanlength;                                /* uncompressed, raw data length of frame */
 327        long bytes_read;                                /* amount of scanlength that has been read from data */
 328        struct usbvision_v4l2_format_st v4l2_format;    /* format the user needs*/
 329        int v4l2_linesize;                              /* bytes for one videoline*/
 330        struct timeval timestamp;
 331        int sequence;                                   /* How many video frames we send to user */
 332};
 333
 334#define CODEC_SAA7113   7113
 335#define CODEC_SAA7111   7111
 336#define CODEC_WEBCAM    3000
 337#define BRIDGE_NT1003   1003
 338#define BRIDGE_NT1004   1004
 339#define BRIDGE_NT1005   1005
 340
 341struct usbvision_device_data_st {
 342        __u64 video_norm;
 343        const char *model_string;
 344        int interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
 345        __u16 codec;
 346        unsigned video_channels:3;
 347        unsigned audio_channels:2;
 348        unsigned radio:1;
 349        unsigned vbi:1;
 350        unsigned tuner:1;
 351        unsigned vin_reg1_override:1;   /* Override default value with */
 352        unsigned vin_reg2_override:1;   /* vin_reg1, vin_reg2, etc. */
 353        unsigned dvi_yuv_override:1;
 354        __u8 vin_reg1;
 355        __u8 vin_reg2;
 356        __u8 dvi_yuv;
 357        __u8 tuner_type;
 358        __s16 x_offset;
 359        __s16 y_offset;
 360};
 361
 362/* Declared on usbvision-cards.c */
 363extern struct usbvision_device_data_st usbvision_device_data[];
 364extern struct usb_device_id usbvision_table[];
 365
 366struct usb_usbvision {
 367        struct v4l2_device v4l2_dev;
 368        struct video_device *vdev;                                      /* Video Device */
 369        struct video_device *rdev;                                      /* Radio Device */
 370
 371        /* i2c Declaration Section*/
 372        struct i2c_adapter i2c_adap;
 373        int registered_i2c;
 374
 375        struct urb *ctrl_urb;
 376        unsigned char ctrl_urb_buffer[8];
 377        int ctrl_urb_busy;
 378        struct usb_ctrlrequest ctrl_urb_setup;
 379        wait_queue_head_t ctrl_urb_wq;                                  /* Processes waiting */
 380
 381        /* configuration part */
 382        int have_tuner;
 383        int tuner_type;
 384        int bridge_type;                                                /* NT1003, NT1004, NT1005 */
 385        int radio;
 386        int video_inputs;                                               /* # of inputs */
 387        unsigned long freq;
 388        int audio_mute;
 389        int audio_channel;
 390        int isoc_mode;                                                  /* format of video data for the usb isoc-transfer */
 391        unsigned int nr;                                                /* Number of the device */
 392
 393        /* Device structure */
 394        struct usb_device *dev;
 395        /* usb transfer */
 396        int num_alt;            /* Number of alternative settings */
 397        unsigned int *alt_max_pkt_size; /* array of max_packet_size */
 398        unsigned char iface;                                            /* Video interface number */
 399        unsigned char iface_alt;                                        /* Alt settings */
 400        unsigned char vin_reg2_preset;
 401        struct mutex v4l2_lock;
 402        struct timer_list power_off_timer;
 403        struct work_struct power_off_work;
 404        int power;                                                      /* is the device powered on? */
 405        int user;                                                       /* user count for exclusive use */
 406        int initialized;                                                /* Had we already sent init sequence? */
 407        int dev_model;                                                  /* What type of USBVISION device we got? */
 408        enum stream_state streaming;                                    /* Are we streaming Isochronous? */
 409        int last_error;                                                 /* What calamity struck us? */
 410        int curwidth;                                                   /* width of the frame the device is currently set to*/
 411        int curheight;                                                  /* height of the frame the device is currently set to*/
 412        int stretch_width;                                              /* stretch-factor for frame width (from usb to screen)*/
 413        int stretch_height;                                             /* stretch-factor for frame height (from usb to screen)*/
 414        char *fbuf;                                                     /* Videodev buffer area for mmap*/
 415        int max_frame_size;                                             /* Bytes in one video frame */
 416        int fbuf_size;                                                  /* Videodev buffer size */
 417        spinlock_t queue_lock;                                          /* spinlock for protecting mods on inqueue and outqueue */
 418        struct list_head inqueue, outqueue;                             /* queued frame list and ready to dequeue frame list */
 419        wait_queue_head_t wait_frame;                                   /* Processes waiting */
 420        wait_queue_head_t wait_stream;                                  /* Processes waiting */
 421        struct usbvision_frame *cur_frame;                              /* pointer to current frame, set by usbvision_find_header */
 422        struct usbvision_frame frame[USBVISION_NUMFRAMES];              /* frame buffer */
 423        int num_frames;                                                 /* number of frames allocated */
 424        struct usbvision_sbuf sbuf[USBVISION_NUMSBUF];                  /* S buffering */
 425        volatile int remove_pending;                                    /* If set then about to exit */
 426
 427        /* Scratch space from the Isochronous Pipe.*/
 428        unsigned char *scratch;
 429        int scratch_read_ptr;
 430        int scratch_write_ptr;
 431        int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
 432        int scratch_headermarker_read_ptr;
 433        int scratch_headermarker_write_ptr;
 434        enum isoc_state isocstate;
 435        struct usbvision_v4l2_format_st palette;
 436
 437        struct v4l2_capability vcap;                                    /* Video capabilities */
 438        unsigned int ctl_input;                                         /* selected input */
 439        v4l2_std_id tvnorm_id;                                          /* selected tv norm */
 440        unsigned char video_endp;                                       /* 0x82 for USBVISION devices based */
 441
 442        /* Decompression stuff: */
 443        unsigned char *intra_frame_buffer;                              /* Buffer for reference frame */
 444        int block_pos;                                                  /* for test only */
 445        int request_intra;                                              /* 0 = normal; 1 = intra frame is requested; */
 446        int last_isoc_frame_num;                                        /* check for lost isoc frames */
 447        int isoc_packet_size;                                           /* need to calculate used_bandwidth */
 448        int used_bandwidth;                                             /* used bandwidth 0-100%, need to set compr_level */
 449        int compr_level;                                                /* How strong (100) or weak (0) is compression */
 450        int last_compr_level;                                           /* How strong (100) or weak (0) was compression */
 451        int usb_bandwidth;                                              /* Mbit/s */
 452
 453        /* Statistics that can be overlayed on the screen */
 454        unsigned long isoc_urb_count;                   /* How many URBs we received so far */
 455        unsigned long urb_length;                       /* Length of last URB */
 456        unsigned long isoc_data_count;                  /* How many bytes we received */
 457        unsigned long header_count;                     /* How many frame headers we found */
 458        unsigned long scratch_ovf_count;                /* How many times we overflowed scratch */
 459        unsigned long isoc_skip_count;                  /* How many empty ISO packets received */
 460        unsigned long isoc_err_count;                   /* How many bad ISO packets received */
 461        unsigned long isoc_packet_count;                /* How many packets we totally got */
 462        unsigned long time_in_irq;                      /* How long do we need for interrupt */
 463        int isoc_measure_bandwidth_count;
 464        int frame_num;                                  /* How many video frames we send to user */
 465        int max_strip_len;                              /* How big is the biggest strip */
 466        int comprblock_pos;
 467        int strip_len_errors;                           /* How many times was block_pos greater than strip_len */
 468        int strip_magic_errors;
 469        int strip_line_number_errors;
 470        int compr_block_types[4];
 471};
 472
 473static inline struct usb_usbvision *to_usbvision(struct v4l2_device *v4l2_dev)
 474{
 475        return container_of(v4l2_dev, struct usb_usbvision, v4l2_dev);
 476}
 477
 478#define call_all(usbvision, o, f, args...) \
 479        v4l2_device_call_all(&usbvision->v4l2_dev, 0, o, f, ##args)
 480
 481/* --------------------------------------------------------------- */
 482/* defined in usbvision-i2c.c                                      */
 483/* i2c-algo-usb declaration                                        */
 484/* --------------------------------------------------------------- */
 485
 486/* ----------------------------------------------------------------------- */
 487/* usbvision specific I2C functions                                        */
 488/* ----------------------------------------------------------------------- */
 489int usbvision_i2c_register(struct usb_usbvision *usbvision);
 490int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
 491
 492/* defined in usbvision-core.c                                      */
 493int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
 494int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
 495                        unsigned char value);
 496
 497int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
 498void usbvision_frames_free(struct usb_usbvision *usbvision);
 499int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
 500void usbvision_scratch_free(struct usb_usbvision *usbvision);
 501int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
 502void usbvision_decompress_free(struct usb_usbvision *usbvision);
 503
 504int usbvision_setup(struct usb_usbvision *usbvision, int format);
 505int usbvision_init_isoc(struct usb_usbvision *usbvision);
 506int usbvision_restart_isoc(struct usb_usbvision *usbvision);
 507void usbvision_stop_isoc(struct usb_usbvision *usbvision);
 508int usbvision_set_alternate(struct usb_usbvision *dev);
 509
 510int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel);
 511int usbvision_audio_off(struct usb_usbvision *usbvision);
 512
 513int usbvision_begin_streaming(struct usb_usbvision *usbvision);
 514void usbvision_empty_framequeues(struct usb_usbvision *dev);
 515int usbvision_stream_interrupt(struct usb_usbvision *dev);
 516
 517int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
 518int usbvision_set_input(struct usb_usbvision *usbvision);
 519int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
 520
 521void usbvision_init_power_off_timer(struct usb_usbvision *usbvision);
 522void usbvision_set_power_off_timer(struct usb_usbvision *usbvision);
 523void usbvision_reset_power_off_timer(struct usb_usbvision *usbvision);
 524int usbvision_power_off(struct usb_usbvision *usbvision);
 525int usbvision_power_on(struct usb_usbvision *usbvision);
 526
 527#endif                                                                  /* __LINUX_USBVISION_H */
 528
 529/*
 530 * Overrides for Emacs so that we follow Linus's tabbing style.
 531 * ---------------------------------------------------------------------------
 532 * Local variables:
 533 * c-basic-offset: 8
 534 * End:
 535 */
 536