LXR linux/drivers/media/video/em28xx/em28xx.h

   1/*
   2   em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
   3
   4   Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
   5                      Ludovico Cavedon <cavedon@sssup.it>
   6                      Mauro Carvalho Chehab <mchehab@infradead.org>
   7
   8   Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
   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
  25#ifndef _EM28XX_H
  26#define _EM28XX_H
  27
  28#include <linux/videodev2.h>
  29#include <media/videobuf-vmalloc.h>
  30#include <media/v4l2-device.h>
  31
  32#include <linux/i2c.h>
  33#include <linux/mutex.h>
  34#include <media/ir-kbd-i2c.h>
  35#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
  36#include <media/videobuf-dvb.h>
  37#endif
  38#include "tuner-xc2028.h"
  39#include "em28xx-reg.h"
  40
  41/* Boards supported by driver */
  42#define EM2800_BOARD_UNKNOWN                    0
  43#define EM2820_BOARD_UNKNOWN                    1
  44#define EM2820_BOARD_TERRATEC_CINERGY_250       2
  45#define EM2820_BOARD_PINNACLE_USB_2             3
  46#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
  47#define EM2820_BOARD_MSI_VOX_USB_2              5
  48#define EM2800_BOARD_TERRATEC_CINERGY_200       6
  49#define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
  50#define EM2800_BOARD_KWORLD_USB2800             8
  51#define EM2820_BOARD_PINNACLE_DVC_90            9
  52#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900    10
  53#define EM2880_BOARD_TERRATEC_HYBRID_XS         11
  54#define EM2820_BOARD_KWORLD_PVRTV2800RF         12
  55#define EM2880_BOARD_TERRATEC_PRODIGY_XS        13
  56#define EM2820_BOARD_PROLINK_PLAYTV_USB2        14
  57#define EM2800_BOARD_VGEAR_POCKETTV             15
  58#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  59#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO       17
  60#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
  61#define EM2860_BOARD_SAA711X_REFERENCE_DESIGN   19
  62#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
  63#define EM2800_BOARD_GRABBEEX_USB2800           21
  64#define EM2750_BOARD_UNKNOWN                      22
  65#define EM2750_BOARD_DLCW_130                     23
  66#define EM2820_BOARD_DLINK_USB_TV                 24
  67#define EM2820_BOARD_GADMEI_UTV310                25
  68#define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  69#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  70#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  71#define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  72#define EM2821_BOARD_USBGEAR_VD204                31
  73#define EM2821_BOARD_SUPERCOMP_USB_2              32
  74#define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  75#define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  76#define EM2860_BOARD_NETGMBH_CAM                  36
  77#define EM2860_BOARD_GADMEI_UTV330                37
  78#define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  79#define EM2861_BOARD_KWORLD_PVRTV_300U            39
  80#define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  81#define EM2870_BOARD_KWORLD_350U                  41
  82#define EM2870_BOARD_KWORLD_355U                  42
  83#define EM2870_BOARD_TERRATEC_XS                  43
  84#define EM2870_BOARD_TERRATEC_XS_MT2060           44
  85#define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  86#define EM2870_BOARD_COMPRO_VIDEOMATE             46
  87#define EM2880_BOARD_KWORLD_DVB_305U              47
  88#define EM2880_BOARD_KWORLD_DVB_310U              48
  89#define EM2880_BOARD_MSI_DIGIVOX_AD               49
  90#define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  91#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  92#define EM2881_BOARD_DNT_DA2_HYBRID               52
  93#define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  94#define EM2882_BOARD_KWORLD_VS_DVBT               54
  95#define EM2882_BOARD_TERRATEC_HYBRID_XS           55
  96#define EM2882_BOARD_PINNACLE_HYBRID_PRO          56
  97#define EM2883_BOARD_KWORLD_HYBRID_330U                  57
  98#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
  99#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 100#define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 101#define EM2820_BOARD_GADMEI_TVR200                62
 102#define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 103#define EM2860_BOARD_EASYCAP                      64
 104#define EM2820_BOARD_IODATA_GVMVP_SZ              65
 105#define EM2880_BOARD_EMPIRE_DUAL_TV               66
 106#define EM2860_BOARD_TERRATEC_GRABBY              67
 107#define EM2860_BOARD_TERRATEC_AV350               68
 108#define EM2882_BOARD_KWORLD_ATSC_315U             69
 109#define EM2882_BOARD_EVGA_INDTUBE                 70
 110#define EM2820_BOARD_SILVERCREST_WEBCAM           71
 111#define EM2861_BOARD_GADMEI_UTV330PLUS           72
 112#define EM2870_BOARD_REDDO_DVB_C_USB_BOX          73
 113
 114/* Limits minimum and default number of buffers */
 115#define EM28XX_MIN_BUF 4
 116#define EM28XX_DEF_BUF 8
 117
 118/*Limits the max URB message size */
 119#define URB_MAX_CTRL_SIZE 80
 120
 121/* Params for validated field */
 122#define EM28XX_BOARD_NOT_VALIDATED 1
 123#define EM28XX_BOARD_VALIDATED     0
 124
 125/* Params for em28xx_cmd() audio */
 126#define EM28XX_START_AUDIO      1
 127#define EM28XX_STOP_AUDIO       0
 128
 129/* maximum number of em28xx boards */
 130#define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 131
 132/* maximum number of frames that can be queued */
 133#define EM28XX_NUM_FRAMES 5
 134/* number of frames that get used for v4l2_read() */
 135#define EM28XX_NUM_READ_FRAMES 2
 136
 137/* number of buffers for isoc transfers */
 138#define EM28XX_NUM_BUFS 5
 139
 140/* number of packets for each buffer
 141   windows requests only 40 packets .. so we better do the same
 142   this is what I found out for all alternate numbers there!
 143 */
 144#define EM28XX_NUM_PACKETS 40
 145
 146/* default alternate; 0 means choose the best */
 147#define EM28XX_PINOUT 0
 148
 149#define EM28XX_INTERLACED_DEFAULT 1
 150
 151/*
 152#define (use usbview if you want to get the other alternate number infos)
 153#define
 154#define alternate number 2
 155#define                         Endpoint Address: 82
 156                        Direction: in
 157                        Attribute: 1
 158                        Type: Isoc
 159                        Max Packet Size: 1448
 160                        Interval: 125us
 161
 162  alternate number 7
 163
 164                        Endpoint Address: 82
 165                        Direction: in
 166                        Attribute: 1
 167                        Type: Isoc
 168                        Max Packet Size: 3072
 169                        Interval: 125us
 170*/
 171
 172/* time to wait when stopping the isoc transfer */
 173#define EM28XX_URB_TIMEOUT \
 174                        msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 175
 176/* time in msecs to wait for i2c writes to finish */
 177#define EM2800_I2C_WRITE_TIMEOUT 20
 178
 179enum em28xx_mode {
 180        EM28XX_SUSPEND,
 181        EM28XX_ANALOG_MODE,
 182        EM28XX_DIGITAL_MODE,
 183};
 184
 185enum em28xx_stream_state {
 186        STREAM_OFF,
 187        STREAM_INTERRUPT,
 188        STREAM_ON,
 189};
 190
 191struct em28xx;
 192
 193struct em28xx_usb_isoc_ctl {
 194                /* max packet size of isoc transaction */
 195        int                             max_pkt_size;
 196
 197                /* number of allocated urbs */
 198        int                             num_bufs;
 199
 200                /* urb for isoc transfers */
 201        struct urb                      **urb;
 202
 203                /* transfer buffers for isoc transfer */
 204        char                            **transfer_buffer;
 205
 206                /* Last buffer command and region */
 207        u8                              cmd;
 208        int                             pos, size, pktsize;
 209
 210                /* Last field: ODD or EVEN? */
 211        int                             field;
 212
 213                /* Stores incomplete commands */
 214        u32                             tmp_buf;
 215        int                             tmp_buf_len;
 216
 217                /* Stores already requested buffers */
 218        struct em28xx_buffer            *vid_buf;
 219        struct em28xx_buffer            *vbi_buf;
 220
 221                /* Stores the number of received fields */
 222        int                             nfields;
 223
 224                /* isoc urb callback */
 225        int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 226
 227};
 228
 229/* Struct to enumberate video formats */
 230struct em28xx_fmt {
 231        char  *name;
 232        u32   fourcc;          /* v4l2 format id */
 233        int   depth;
 234        int   reg;
 235};
 236
 237/* buffer for one video frame */
 238struct em28xx_buffer {
 239        /* common v4l buffer stuff -- must be first */
 240        struct videobuf_buffer vb;
 241
 242        struct list_head frame;
 243        int top_field;
 244        int receiving;
 245};
 246
 247struct em28xx_dmaqueue {
 248        struct list_head       active;
 249        struct list_head       queued;
 250
 251        wait_queue_head_t          wq;
 252
 253        /* Counters to control buffer fill */
 254        int                        pos;
 255};
 256
 257/* io methods */
 258enum em28xx_io_method {
 259        IO_NONE,
 260        IO_READ,
 261        IO_MMAP,
 262};
 263
 264/* inputs */
 265
 266#define MAX_EM28XX_INPUT 4
 267enum enum28xx_itype {
 268        EM28XX_VMUX_COMPOSITE1 = 1,
 269        EM28XX_VMUX_COMPOSITE2,
 270        EM28XX_VMUX_COMPOSITE3,
 271        EM28XX_VMUX_COMPOSITE4,
 272        EM28XX_VMUX_SVIDEO,
 273        EM28XX_VMUX_TELEVISION,
 274        EM28XX_VMUX_CABLE,
 275        EM28XX_VMUX_DVB,
 276        EM28XX_VMUX_DEBUG,
 277        EM28XX_RADIO,
 278};
 279
 280enum em28xx_ac97_mode {
 281        EM28XX_NO_AC97 = 0,
 282        EM28XX_AC97_EM202,
 283        EM28XX_AC97_SIGMATEL,
 284        EM28XX_AC97_OTHER,
 285};
 286
 287struct em28xx_audio_mode {
 288        enum em28xx_ac97_mode ac97;
 289
 290        u16 ac97_feat;
 291        u32 ac97_vendor_id;
 292
 293        unsigned int has_audio:1;
 294
 295        unsigned int i2s_3rates:1;
 296        unsigned int i2s_5rates:1;
 297};
 298
 299/* em28xx has two audio inputs: tuner and line in.
 300   However, on most devices, an auxiliary AC97 codec device is used.
 301   The AC97 device may have several different inputs and outputs,
 302   depending on their model. So, it is possible to use AC97 mixer to
 303   address more than two different entries.
 304 */
 305enum em28xx_amux {
 306        /* This is the only entry for em28xx tuner input */
 307        EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 308
 309        EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 310
 311        /* Some less-common mixer setups */
 312        EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 313        EM28XX_AMUX_PHONE,
 314        EM28XX_AMUX_MIC,
 315        EM28XX_AMUX_CD,
 316        EM28XX_AMUX_AUX,
 317        EM28XX_AMUX_PCM_OUT,
 318};
 319
 320enum em28xx_aout {
 321        /* AC97 outputs */
 322        EM28XX_AOUT_MASTER = 1 << 0,
 323        EM28XX_AOUT_LINE   = 1 << 1,
 324        EM28XX_AOUT_MONO   = 1 << 2,
 325        EM28XX_AOUT_LFE    = 1 << 3,
 326        EM28XX_AOUT_SURR   = 1 << 4,
 327
 328        /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 329        EM28XX_AOUT_PCM_IN = 1 << 7,
 330
 331        /* Bits 10-8 are used to indicate the PCM IN record select */
 332        EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 333        EM28XX_AOUT_PCM_CD      = 1 << 8,
 334        EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 335        EM28XX_AOUT_PCM_AUX     = 3 << 8,
 336        EM28XX_AOUT_PCM_LINE    = 4 << 8,
 337        EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 338        EM28XX_AOUT_PCM_MONO    = 6 << 8,
 339        EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 340};
 341
 342static inline int ac97_return_record_select(int a_out)
 343{
 344        return (a_out & 0x700) >> 8;
 345}
 346
 347struct em28xx_reg_seq {
 348        int reg;
 349        unsigned char val, mask;
 350        int sleep;
 351};
 352
 353struct em28xx_input {
 354        enum enum28xx_itype type;
 355        unsigned int vmux;
 356        enum em28xx_amux amux;
 357        enum em28xx_aout aout;
 358        struct em28xx_reg_seq *gpio;
 359};
 360
 361#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 362
 363enum em28xx_decoder {
 364        EM28XX_NODECODER = 0,
 365        EM28XX_TVP5150,
 366        EM28XX_SAA711X,
 367};
 368
 369enum em28xx_sensor {
 370        EM28XX_NOSENSOR = 0,
 371        EM28XX_MT9V011,
 372        EM28XX_MT9M001,
 373        EM28XX_MT9M111,
 374};
 375
 376enum em28xx_adecoder {
 377        EM28XX_NOADECODER = 0,
 378        EM28XX_TVAUDIO,
 379};
 380
 381struct em28xx_board {
 382        char *name;
 383        int vchannels;
 384        int tuner_type;
 385        int tuner_addr;
 386
 387        /* i2c flags */
 388        unsigned int tda9887_conf;
 389
 390        /* GPIO sequences */
 391        struct em28xx_reg_seq *dvb_gpio;
 392        struct em28xx_reg_seq *suspend_gpio;
 393        struct em28xx_reg_seq *tuner_gpio;
 394        struct em28xx_reg_seq *mute_gpio;
 395
 396        unsigned int is_em2800:1;
 397        unsigned int has_msp34xx:1;
 398        unsigned int mts_firmware:1;
 399        unsigned int max_range_640_480:1;
 400        unsigned int has_dvb:1;
 401        unsigned int has_snapshot_button:1;
 402        unsigned int is_webcam:1;
 403        unsigned int valid:1;
 404        unsigned int has_ir_i2c:1;
 405
 406        unsigned char xclk, i2c_speed;
 407        unsigned char radio_addr;
 408        unsigned short tvaudio_addr;
 409
 410        enum em28xx_decoder decoder;
 411        enum em28xx_adecoder adecoder;
 412
 413        struct em28xx_input       input[MAX_EM28XX_INPUT];
 414        struct em28xx_input       radio;
 415        struct ir_scancode_table  *ir_codes;
 416};
 417
 418struct em28xx_eeprom {
 419        u32 id;                 /* 0x9567eb1a */
 420        u16 vendor_ID;
 421        u16 product_ID;
 422
 423        u16 chip_conf;
 424
 425        u16 board_conf;
 426
 427        u16 string1, string2, string3;
 428
 429        u8 string_idx_table;
 430};
 431
 432/* device states */
 433enum em28xx_dev_state {
 434        DEV_INITIALIZED = 0x01,
 435        DEV_DISCONNECTED = 0x02,
 436        DEV_MISCONFIGURED = 0x04,
 437};
 438
 439#define EM28XX_AUDIO_BUFS 5
 440#define EM28XX_NUM_AUDIO_PACKETS 64
 441#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 442#define EM28XX_CAPTURE_STREAM_EN 1
 443
 444/* em28xx extensions */
 445#define EM28XX_AUDIO   0x10
 446#define EM28XX_DVB     0x20
 447
 448/* em28xx resource types (used for res_get/res_lock etc */
 449#define EM28XX_RESOURCE_VIDEO 0x01
 450#define EM28XX_RESOURCE_VBI   0x02
 451
 452struct em28xx_audio {
 453        char name[50];
 454        char *transfer_buffer[EM28XX_AUDIO_BUFS];
 455        struct urb *urb[EM28XX_AUDIO_BUFS];
 456        struct usb_device *udev;
 457        unsigned int capture_transfer_done;
 458        struct snd_pcm_substream   *capture_pcm_substream;
 459
 460        unsigned int hwptr_done_capture;
 461        struct snd_card            *sndcard;
 462
 463        int users;
 464        enum em28xx_stream_state capture_stream;
 465        spinlock_t slock;
 466};
 467
 468struct em28xx;
 469
 470struct em28xx_fh {
 471        struct em28xx *dev;
 472        int           radio;
 473        unsigned int  resources;
 474
 475        struct videobuf_queue        vb_vidq;
 476        struct videobuf_queue        vb_vbiq;
 477
 478        enum v4l2_buf_type           type;
 479};
 480
 481/* main device struct */
 482struct em28xx {
 483        /* generic device properties */
 484        char name[30];          /* name (including minor) of the device */
 485        int model;              /* index in the device_data struct */
 486        int devno;              /* marks the number of this device */
 487        enum em28xx_chip_id chip_id;
 488
 489        struct v4l2_device v4l2_dev;
 490        struct em28xx_board board;
 491
 492        /* Webcam specific fields */
 493        enum em28xx_sensor em28xx_sensor;
 494        int sensor_xres, sensor_yres;
 495        int sensor_xtal;
 496
 497        /* Allows progressive (e. g. non-interlaced) mode */
 498        int progressive;
 499
 500        /* Vinmode/Vinctl used at the driver */
 501        int vinmode, vinctl;
 502
 503        unsigned int has_audio_class:1;
 504        unsigned int has_alsa_audio:1;
 505
 506        struct em28xx_fmt *format;
 507
 508        struct em28xx_IR *ir;
 509
 510        /* Some older em28xx chips needs a waiting time after writing */
 511        unsigned int wait_after_write;
 512
 513        struct list_head        devlist;
 514
 515        u32 i2s_speed;          /* I2S speed for audio digital stream */
 516
 517        struct em28xx_audio_mode audio_mode;
 518
 519        int tuner_type;         /* type of the tuner */
 520        int tuner_addr;         /* tuner address */
 521        int tda9887_conf;
 522        /* i2c i/o */
 523        struct i2c_adapter i2c_adap;
 524        struct i2c_client i2c_client;
 525        /* video for linux */
 526        int users;              /* user count for exclusive use */
 527        struct video_device *vdev;      /* video for linux device struct */
 528        v4l2_std_id norm;       /* selected tv norm */
 529        int ctl_freq;           /* selected frequency */
 530        unsigned int ctl_input; /* selected input */
 531        unsigned int ctl_ainput;/* selected audio input */
 532        unsigned int ctl_aoutput;/* selected audio output */
 533        int mute;
 534        int volume;
 535        /* frame properties */
 536        int width;              /* current frame width */
 537        int height;             /* current frame height */
 538        unsigned hscale;        /* horizontal scale factor (see datasheet) */
 539        unsigned vscale;        /* vertical scale factor (see datasheet) */
 540        int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 541        unsigned int video_bytesread;   /* Number of bytes read */
 542
 543        unsigned long hash;     /* eeprom hash - for boards with generic ID */
 544        unsigned long i2c_hash; /* i2c devicelist hash -
 545                                   for boards with generic ID */
 546
 547        struct em28xx_audio adev;
 548
 549        /* states */
 550        enum em28xx_dev_state state;
 551        enum em28xx_io_method io;
 552
 553        /* vbi related state tracking */
 554        int capture_type;
 555        int vbi_read;
 556        unsigned char cur_field;
 557
 558
 559        struct work_struct         request_module_wk;
 560
 561        /* locks */
 562        struct mutex lock;
 563        struct mutex ctrl_urb_lock;     /* protects urb_buf */
 564        /* spinlock_t queue_lock; */
 565        struct list_head inqueue, outqueue;
 566        wait_queue_head_t open, wait_frame, wait_stream;
 567        struct video_device *vbi_dev;
 568        struct video_device *radio_dev;
 569
 570        /* resources in use */
 571        unsigned int resources;
 572
 573        unsigned char eedata[256];
 574
 575        /* Isoc control struct */
 576        struct em28xx_dmaqueue vidq;
 577        struct em28xx_dmaqueue vbiq;
 578        struct em28xx_usb_isoc_ctl isoc_ctl;
 579        spinlock_t slock;
 580
 581        /* usb transfer */
 582        struct usb_device *udev;        /* the usb device */
 583        int alt;                /* alternate */
 584        int max_pkt_size;       /* max packet size of isoc transaction */
 585        int num_alt;            /* Number of alternative settings */
 586        unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 587        struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 588        char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
 589                                                   transfer */
 590        char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 591
 592        /* helper funcs that call usb_control_msg */
 593        int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 594                                        char *buf, int len);
 595        int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 596        int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 597                                        char *buf, int len);
 598        int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 599                                      char *buf, int len);
 600        int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 601
 602        enum em28xx_mode mode;
 603
 604        /* register numbers for GPO/GPIO registers */
 605        u16 reg_gpo_num, reg_gpio_num;
 606
 607        /* Caches GPO and GPIO registers */
 608        unsigned char   reg_gpo, reg_gpio;
 609
 610        /* Snapshot button */
 611        char snapshot_button_path[30];  /* path of the input dev */
 612        struct input_dev *sbutton_input_dev;
 613        struct delayed_work sbutton_query_work;
 614
 615        struct em28xx_dvb *dvb;
 616
 617        /* I2C keyboard data */
 618        struct i2c_board_info info;
 619        struct IR_i2c_init_data init_data;
 620};
 621
 622struct em28xx_ops {
 623        struct list_head next;
 624        char *name;
 625        int id;
 626        int (*init)(struct em28xx *);
 627        int (*fini)(struct em28xx *);
 628};
 629
 630/* Provided by em28xx-i2c.c */
 631void em28xx_do_i2c_scan(struct em28xx *dev);
 632int  em28xx_i2c_register(struct em28xx *dev);
 633int  em28xx_i2c_unregister(struct em28xx *dev);
 634
 635/* Provided by em28xx-core.c */
 636
 637u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 638void em28xx_queue_unusedframes(struct em28xx *dev);
 639void em28xx_release_buffers(struct em28xx *dev);
 640
 641int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 642                            char *buf, int len);
 643int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 644int em28xx_read_reg(struct em28xx *dev, u16 reg);
 645int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 646                          int len);
 647int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 648int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 649
 650int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 651int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 652
 653int em28xx_audio_analog_set(struct em28xx *dev);
 654int em28xx_audio_setup(struct em28xx *dev);
 655
 656int em28xx_colorlevels_set_default(struct em28xx *dev);
 657int em28xx_capture_start(struct em28xx *dev, int start);
 658int em28xx_vbi_supported(struct em28xx *dev);
 659int em28xx_set_outfmt(struct em28xx *dev);
 660int em28xx_resolution_set(struct em28xx *dev);
 661int em28xx_set_alternate(struct em28xx *dev);
 662int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 663                     int num_bufs, int max_pkt_size,
 664                     int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 665void em28xx_uninit_isoc(struct em28xx *dev);
 666int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 667int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 668int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 669void em28xx_wake_i2c(struct em28xx *dev);
 670void em28xx_remove_from_devlist(struct em28xx *dev);
 671void em28xx_add_into_devlist(struct em28xx *dev);
 672struct em28xx *em28xx_get_device(int minor,
 673                                 enum v4l2_buf_type *fh_type,
 674                                 int *has_radio);
 675int em28xx_register_extension(struct em28xx_ops *dev);
 676void em28xx_unregister_extension(struct em28xx_ops *dev);
 677void em28xx_init_extension(struct em28xx *dev);
 678void em28xx_close_extension(struct em28xx *dev);
 679
 680/* Provided by em28xx-video.c */
 681int em28xx_register_analog_devices(struct em28xx *dev);
 682void em28xx_release_analog_resources(struct em28xx *dev);
 683
 684/* Provided by em28xx-cards.c */
 685extern int em2800_variant_detect(struct usb_device *udev, int model);
 686extern void em28xx_pre_card_setup(struct em28xx *dev);
 687extern void em28xx_card_setup(struct em28xx *dev);
 688extern struct em28xx_board em28xx_boards[];
 689extern struct usb_device_id em28xx_id_table[];
 690extern const unsigned int em28xx_bcount;
 691void em28xx_register_i2c_ir(struct em28xx *dev);
 692int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 693void em28xx_release_resources(struct em28xx *dev);
 694
 695/* Provided by em28xx-input.c */
 696int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 697int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 698int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 699                                     u32 *ir_raw);
 700void em28xx_register_snapshot_button(struct em28xx *dev);
 701void em28xx_deregister_snapshot_button(struct em28xx *dev);
 702
 703int em28xx_ir_init(struct em28xx *dev);
 704int em28xx_ir_fini(struct em28xx *dev);
 705
 706/* Provided by em28xx-vbi.c */
 707extern struct videobuf_queue_ops em28xx_vbi_qops;
 708
 709/* printk macros */
 710
 711#define em28xx_err(fmt, arg...) do {\
 712        printk(KERN_ERR fmt , ##arg); } while (0)
 713
 714#define em28xx_errdev(fmt, arg...) do {\
 715        printk(KERN_ERR "%s: "fmt,\
 716                        dev->name , ##arg); } while (0)
 717
 718#define em28xx_info(fmt, arg...) do {\
 719        printk(KERN_INFO "%s: "fmt,\
 720                        dev->name , ##arg); } while (0)
 721#define em28xx_warn(fmt, arg...) do {\
 722        printk(KERN_WARNING "%s: "fmt,\
 723                        dev->name , ##arg); } while (0)
 724
 725static inline int em28xx_compression_disable(struct em28xx *dev)
 726{
 727        /* side effect of disabling scaler and mixer */
 728        return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 729}
 730
 731static inline int em28xx_contrast_get(struct em28xx *dev)
 732{
 733        return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 734}
 735
 736static inline int em28xx_brightness_get(struct em28xx *dev)
 737{
 738        return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 739}
 740
 741static inline int em28xx_saturation_get(struct em28xx *dev)
 742{
 743        return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 744}
 745
 746static inline int em28xx_u_balance_get(struct em28xx *dev)
 747{
 748        return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 749}
 750
 751static inline int em28xx_v_balance_get(struct em28xx *dev)
 752{
 753        return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 754}
 755
 756static inline int em28xx_gamma_get(struct em28xx *dev)
 757{
 758        return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 759}
 760
 761static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 762{
 763        u8 tmp = (u8) val;
 764        return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 765}
 766
 767static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 768{
 769        u8 tmp = (u8) val;
 770        return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 771}
 772
 773static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 774{
 775        u8 tmp = (u8) val;
 776        return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 777}
 778
 779static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 780{
 781        u8 tmp = (u8) val;
 782        return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 783}
 784
 785static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 786{
 787        u8 tmp = (u8) val;
 788        return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 789}
 790
 791static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 792{
 793        u8 tmp = (u8) val;
 794        return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 795}
 796
 797/*FIXME: maxw should be dependent of alt mode */
 798static inline unsigned int norm_maxw(struct em28xx *dev)
 799{
 800        if (dev->board.is_webcam)
 801                return dev->sensor_xres;
 802
 803        if (dev->board.max_range_640_480)
 804                return 640;
 805
 806        return 720;
 807}
 808
 809static inline unsigned int norm_maxh(struct em28xx *dev)
 810{
 811        if (dev->board.is_webcam)
 812                return dev->sensor_yres;
 813
 814        if (dev->board.max_range_640_480)
 815                return 480;
 816
 817        return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 818}
 819#endif
 820