LXR linux/drivers/media/usb/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   Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
   8
   9   Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
  10
  11   This program is free software; you can redistribute it and/or modify
  12   it under the terms of the GNU General Public License as published by
  13   the Free Software Foundation; either version 2 of the License, or
  14   (at your option) any later version.
  15
  16   This program is distributed in the hope that it will be useful,
  17   but WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19   GNU General Public License for more details.
  20
  21   You should have received a copy of the GNU General Public License
  22   along with this program; if not, write to the Free Software
  23   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26#ifndef _EM28XX_H
  27#define _EM28XX_H
  28
  29#include <linux/workqueue.h>
  30#include <linux/i2c.h>
  31#include <linux/mutex.h>
  32#include <linux/videodev2.h>
  33
  34#include <media/videobuf2-vmalloc.h>
  35#include <media/v4l2-device.h>
  36#include <media/v4l2-ctrls.h>
  37#include <media/v4l2-fh.h>
  38#include <media/ir-kbd-i2c.h>
  39#include <media/rc-core.h>
  40#include "tuner-xc2028.h"
  41#include "xc5000.h"
  42#include "em28xx-reg.h"
  43
  44/* Boards supported by driver */
  45#define EM2800_BOARD_UNKNOWN                      0
  46#define EM2820_BOARD_UNKNOWN                      1
  47#define EM2820_BOARD_TERRATEC_CINERGY_250         2
  48#define EM2820_BOARD_PINNACLE_USB_2               3
  49#define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2        4
  50#define EM2820_BOARD_MSI_VOX_USB_2                5
  51#define EM2800_BOARD_TERRATEC_CINERGY_200         6
  52#define EM2800_BOARD_LEADTEK_WINFAST_USBII        7
  53#define EM2800_BOARD_KWORLD_USB2800               8
  54#define EM2820_BOARD_PINNACLE_DVC_90              9
  55#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900      10
  56#define EM2880_BOARD_TERRATEC_HYBRID_XS           11
  57#define EM2820_BOARD_KWORLD_PVRTV2800RF           12
  58#define EM2880_BOARD_TERRATEC_PRODIGY_XS          13
  59#define EM2820_BOARD_PROLINK_PLAYTV_USB2          14
  60#define EM2800_BOARD_VGEAR_POCKETTV               15
  61#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950      16
  62#define EM2880_BOARD_PINNACLE_PCTV_HD_PRO         17
  63#define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2   18
  64#define EM2860_BOARD_SAA711X_REFERENCE_DESIGN     19
  65#define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600     20
  66#define EM2800_BOARD_GRABBEEX_USB2800             21
  67#define EM2750_BOARD_UNKNOWN                      22
  68#define EM2750_BOARD_DLCW_130                     23
  69#define EM2820_BOARD_DLINK_USB_TV                 24
  70#define EM2820_BOARD_GADMEI_UTV310                25
  71#define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  72#define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  73#define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  74#define EM2860_BOARD_TVP5150_REFERENCE_DESIGN     29
  75#define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  76#define EM2821_BOARD_USBGEAR_VD204                31
  77#define EM2821_BOARD_SUPERCOMP_USB_2              32
  78#define EM2860_BOARD_ELGATO_VIDEO_CAPTURE         33
  79#define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  80#define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  81#define EM2860_BOARD_NETGMBH_CAM                  36
  82#define EM2860_BOARD_GADMEI_UTV330                37
  83#define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  84#define EM2861_BOARD_KWORLD_PVRTV_300U            39
  85#define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  86#define EM2870_BOARD_KWORLD_350U                  41
  87#define EM2870_BOARD_KWORLD_355U                  42
  88#define EM2870_BOARD_TERRATEC_XS                  43
  89#define EM2870_BOARD_TERRATEC_XS_MT2060           44
  90#define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  91#define EM2870_BOARD_COMPRO_VIDEOMATE             46
  92#define EM2880_BOARD_KWORLD_DVB_305U              47
  93#define EM2880_BOARD_KWORLD_DVB_310U              48
  94#define EM2880_BOARD_MSI_DIGIVOX_AD               49
  95#define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  96#define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  97#define EM2881_BOARD_DNT_DA2_HYBRID               52
  98#define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  99#define EM2882_BOARD_KWORLD_VS_DVBT               54
 100#define EM2882_BOARD_TERRATEC_HYBRID_XS           55
 101#define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E     56
 102#define EM2883_BOARD_KWORLD_HYBRID_330U           57
 103#define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
 104#define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 105#define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 106#define EM2820_BOARD_GADMEI_TVR200                62
 107#define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 108#define EM2860_BOARD_EASYCAP                      64
 109#define EM2820_BOARD_IODATA_GVMVP_SZ              65
 110#define EM2880_BOARD_EMPIRE_DUAL_TV               66
 111#define EM2860_BOARD_TERRATEC_GRABBY              67
 112#define EM2860_BOARD_TERRATEC_AV350               68
 113#define EM2882_BOARD_KWORLD_ATSC_315U             69
 114#define EM2882_BOARD_EVGA_INDTUBE                 70
 115#define EM2820_BOARD_SILVERCREST_WEBCAM           71
 116#define EM2861_BOARD_GADMEI_UTV330PLUS            72
 117#define EM2870_BOARD_REDDO_DVB_C_USB_BOX          73
 118#define EM2800_BOARD_VC211A                       74
 119#define EM2882_BOARD_DIKOM_DK300                  75
 120#define EM2870_BOARD_KWORLD_A340                  76
 121#define EM2874_BOARD_LEADERSHIP_ISDBT             77
 122#define EM28174_BOARD_PCTV_290E                   78
 123#define EM2884_BOARD_TERRATEC_H5                  79
 124#define EM28174_BOARD_PCTV_460E                   80
 125#define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C     81
 126#define EM2884_BOARD_CINERGY_HTC_STICK            82
 127#define EM2860_BOARD_HT_VIDBOX_NW03               83
 128#define EM2874_BOARD_MAXMEDIA_UB425_TC            84
 129#define EM2884_BOARD_PCTV_510E                    85
 130#define EM2884_BOARD_PCTV_520E                    86
 131#define EM2884_BOARD_TERRATEC_HTC_USB_XS          87
 132#define EM2884_BOARD_C3TECH_DIGITAL_DUO           88
 133
 134/* Limits minimum and default number of buffers */
 135#define EM28XX_MIN_BUF 4
 136#define EM28XX_DEF_BUF 8
 137
 138/*Limits the max URB message size */
 139#define URB_MAX_CTRL_SIZE 80
 140
 141/* Params for validated field */
 142#define EM28XX_BOARD_NOT_VALIDATED 1
 143#define EM28XX_BOARD_VALIDATED     0
 144
 145/* Params for em28xx_cmd() audio */
 146#define EM28XX_START_AUDIO      1
 147#define EM28XX_STOP_AUDIO       0
 148
 149/* maximum number of em28xx boards */
 150#define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 151
 152/* maximum number of frames that can be queued */
 153#define EM28XX_NUM_FRAMES 5
 154/* number of frames that get used for v4l2_read() */
 155#define EM28XX_NUM_READ_FRAMES 2
 156
 157/* number of buffers for isoc transfers */
 158#define EM28XX_NUM_BUFS 5
 159#define EM28XX_DVB_NUM_BUFS 5
 160
 161/* max number of I2C buses on em28xx devices */
 162#define NUM_I2C_BUSES   2
 163
 164/* isoc transfers: number of packets for each buffer
 165   windows requests only 64 packets .. so we better do the same
 166   this is what I found out for all alternate numbers there!
 167 */
 168#define EM28XX_NUM_ISOC_PACKETS 64
 169#define EM28XX_DVB_NUM_ISOC_PACKETS 64
 170
 171/* bulk transfers: transfer buffer size = packet size * packet multiplier
 172   USB 2.0 spec says bulk packet size is always 512 bytes
 173 */
 174#define EM28XX_BULK_PACKET_MULTIPLIER 384
 175#define EM28XX_DVB_BULK_PACKET_MULTIPLIER 384
 176
 177#define EM28XX_INTERLACED_DEFAULT 1
 178
 179/* time in msecs to wait for i2c writes to finish */
 180#define EM2800_I2C_XFER_TIMEOUT         20
 181
 182enum em28xx_mode {
 183        EM28XX_SUSPEND,
 184        EM28XX_ANALOG_MODE,
 185        EM28XX_DIGITAL_MODE,
 186};
 187
 188
 189struct em28xx;
 190
 191struct em28xx_usb_bufs {
 192                /* max packet size of isoc transaction */
 193        int                             max_pkt_size;
 194
 195                /* number of packets in each buffer */
 196        int                             num_packets;
 197
 198                /* number of allocated urbs */
 199        int                             num_bufs;
 200
 201                /* urb for isoc/bulk transfers */
 202        struct urb                      **urb;
 203
 204                /* transfer buffers for isoc/bulk transfer */
 205        char                            **transfer_buffer;
 206};
 207
 208struct em28xx_usb_ctl {
 209                /* isoc/bulk transfer buffers for analog mode */
 210        struct em28xx_usb_bufs          analog_bufs;
 211
 212                /* isoc/bulk transfer buffers for digital mode */
 213        struct em28xx_usb_bufs          digital_bufs;
 214
 215                /* Stores already requested buffers */
 216        struct em28xx_buffer            *vid_buf;
 217        struct em28xx_buffer            *vbi_buf;
 218
 219                /* copy data from URB */
 220        int (*urb_data_copy) (struct em28xx *dev, struct urb *urb);
 221
 222};
 223
 224/* Struct to enumberate video formats */
 225struct em28xx_fmt {
 226        char  *name;
 227        u32   fourcc;          /* v4l2 format id */
 228        int   depth;
 229        int   reg;
 230};
 231
 232/* buffer for one video frame */
 233struct em28xx_buffer {
 234        /* common v4l buffer stuff -- must be first */
 235        struct vb2_buffer vb;
 236        struct list_head list;
 237
 238        void *mem;
 239        unsigned int length;
 240        int top_field;
 241
 242        /* counter to control buffer fill */
 243        unsigned int pos;
 244        /* NOTE; in interlaced mode, this value is reset to zero at
 245         * the start of each new field (not frame !)               */
 246
 247        /* pointer to vmalloc memory address in vb */
 248        char *vb_buf;
 249};
 250
 251struct em28xx_dmaqueue {
 252        struct list_head       active;
 253
 254        wait_queue_head_t          wq;
 255};
 256
 257/* inputs */
 258
 259#define MAX_EM28XX_INPUT 4
 260enum enum28xx_itype {
 261        EM28XX_VMUX_COMPOSITE1 = 1,
 262        EM28XX_VMUX_COMPOSITE2,
 263        EM28XX_VMUX_COMPOSITE3,
 264        EM28XX_VMUX_COMPOSITE4,
 265        EM28XX_VMUX_SVIDEO,
 266        EM28XX_VMUX_TELEVISION,
 267        EM28XX_VMUX_CABLE,
 268        EM28XX_VMUX_DVB,
 269        EM28XX_VMUX_DEBUG,
 270        EM28XX_RADIO,
 271};
 272
 273enum em28xx_ac97_mode {
 274        EM28XX_NO_AC97 = 0,
 275        EM28XX_AC97_EM202,
 276        EM28XX_AC97_SIGMATEL,
 277        EM28XX_AC97_OTHER,
 278};
 279
 280struct em28xx_audio_mode {
 281        enum em28xx_ac97_mode ac97;
 282
 283        u16 ac97_feat;
 284        u32 ac97_vendor_id;
 285
 286        unsigned int has_audio:1;
 287
 288        unsigned int i2s_3rates:1;
 289        unsigned int i2s_5rates:1;
 290};
 291
 292/* em28xx has two audio inputs: tuner and line in.
 293   However, on most devices, an auxiliary AC97 codec device is used.
 294   The AC97 device may have several different inputs and outputs,
 295   depending on their model. So, it is possible to use AC97 mixer to
 296   address more than two different entries.
 297 */
 298enum em28xx_amux {
 299        /* This is the only entry for em28xx tuner input */
 300        EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 301
 302        EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 303
 304        /* Some less-common mixer setups */
 305        EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 306        EM28XX_AMUX_PHONE,
 307        EM28XX_AMUX_MIC,
 308        EM28XX_AMUX_CD,
 309        EM28XX_AMUX_AUX,
 310        EM28XX_AMUX_PCM_OUT,
 311};
 312
 313enum em28xx_aout {
 314        /* AC97 outputs */
 315        EM28XX_AOUT_MASTER = 1 << 0,
 316        EM28XX_AOUT_LINE   = 1 << 1,
 317        EM28XX_AOUT_MONO   = 1 << 2,
 318        EM28XX_AOUT_LFE    = 1 << 3,
 319        EM28XX_AOUT_SURR   = 1 << 4,
 320
 321        /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 322        EM28XX_AOUT_PCM_IN = 1 << 7,
 323
 324        /* Bits 10-8 are used to indicate the PCM IN record select */
 325        EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 326        EM28XX_AOUT_PCM_CD      = 1 << 8,
 327        EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 328        EM28XX_AOUT_PCM_AUX     = 3 << 8,
 329        EM28XX_AOUT_PCM_LINE    = 4 << 8,
 330        EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 331        EM28XX_AOUT_PCM_MONO    = 6 << 8,
 332        EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 333};
 334
 335static inline int ac97_return_record_select(int a_out)
 336{
 337        return (a_out & 0x700) >> 8;
 338}
 339
 340struct em28xx_reg_seq {
 341        int reg;
 342        unsigned char val, mask;
 343        int sleep;
 344};
 345
 346struct em28xx_input {
 347        enum enum28xx_itype type;
 348        unsigned int vmux;
 349        enum em28xx_amux amux;
 350        enum em28xx_aout aout;
 351        struct em28xx_reg_seq *gpio;
 352};
 353
 354#define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 355
 356enum em28xx_decoder {
 357        EM28XX_NODECODER = 0,
 358        EM28XX_TVP5150,
 359        EM28XX_SAA711X,
 360};
 361
 362enum em28xx_sensor {
 363        EM28XX_NOSENSOR = 0,
 364        EM28XX_MT9V011,
 365        EM28XX_MT9M001,
 366        EM28XX_MT9M111,
 367        EM28XX_OV2640,
 368};
 369
 370enum em28xx_adecoder {
 371        EM28XX_NOADECODER = 0,
 372        EM28XX_TVAUDIO,
 373};
 374
 375struct em28xx_board {
 376        char *name;
 377        int vchannels;
 378        int tuner_type;
 379        int tuner_addr;
 380        unsigned def_i2c_bus;   /* Default I2C bus */
 381
 382        /* i2c flags */
 383        unsigned int tda9887_conf;
 384
 385        /* GPIO sequences */
 386        struct em28xx_reg_seq *dvb_gpio;
 387        struct em28xx_reg_seq *suspend_gpio;
 388        struct em28xx_reg_seq *tuner_gpio;
 389        struct em28xx_reg_seq *mute_gpio;
 390
 391        unsigned int is_em2800:1;
 392        unsigned int has_msp34xx:1;
 393        unsigned int mts_firmware:1;
 394        unsigned int max_range_640_480:1;
 395        unsigned int has_dvb:1;
 396        unsigned int has_snapshot_button:1;
 397        unsigned int is_webcam:1;
 398        unsigned int valid:1;
 399        unsigned int has_ir_i2c:1;
 400
 401        unsigned char xclk, i2c_speed;
 402        unsigned char radio_addr;
 403        unsigned short tvaudio_addr;
 404
 405        enum em28xx_decoder decoder;
 406        enum em28xx_adecoder adecoder;
 407
 408        struct em28xx_input       input[MAX_EM28XX_INPUT];
 409        struct em28xx_input       radio;
 410        char                      *ir_codes;
 411};
 412
 413struct em28xx_eeprom {
 414        u8 id[4];                       /* 1a eb 67 95 */
 415        __le16 vendor_ID;
 416        __le16 product_ID;
 417
 418        __le16 chip_conf;
 419
 420        __le16 board_conf;
 421
 422        __le16 string1, string2, string3;
 423
 424        u8 string_idx_table;
 425};
 426
 427#define EM28XX_AUDIO_BUFS 5
 428#define EM28XX_NUM_AUDIO_PACKETS 64
 429#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 430#define EM28XX_CAPTURE_STREAM_EN 1
 431
 432/* em28xx extensions */
 433#define EM28XX_AUDIO   0x10
 434#define EM28XX_DVB     0x20
 435#define EM28XX_RC      0x30
 436
 437/* em28xx resource types (used for res_get/res_lock etc */
 438#define EM28XX_RESOURCE_VIDEO 0x01
 439#define EM28XX_RESOURCE_VBI   0x02
 440
 441struct em28xx_audio {
 442        char name[50];
 443        char *transfer_buffer[EM28XX_AUDIO_BUFS];
 444        struct urb *urb[EM28XX_AUDIO_BUFS];
 445        struct usb_device *udev;
 446        unsigned int capture_transfer_done;
 447        struct snd_pcm_substream   *capture_pcm_substream;
 448
 449        unsigned int hwptr_done_capture;
 450        struct snd_card            *sndcard;
 451
 452        int users;
 453        spinlock_t slock;
 454};
 455
 456struct em28xx;
 457
 458struct em28xx_fh {
 459        struct v4l2_fh fh;
 460        struct em28xx *dev;
 461
 462        enum v4l2_buf_type           type;
 463};
 464
 465enum em28xx_i2c_algo_type {
 466        EM28XX_I2C_ALGO_EM28XX = 0,
 467        EM28XX_I2C_ALGO_EM2800,
 468        EM28XX_I2C_ALGO_EM25XX_BUS_B,
 469};
 470
 471struct em28xx_i2c_bus {
 472        struct em28xx *dev;
 473
 474        unsigned bus;
 475        enum em28xx_i2c_algo_type algo_type;
 476};
 477
 478
 479/* main device struct */
 480struct em28xx {
 481        /* generic device properties */
 482        char name[30];          /* name (including minor) of the device */
 483        int model;              /* index in the device_data struct */
 484        int devno;              /* marks the number of this device */
 485        enum em28xx_chip_id chip_id;
 486        unsigned int is_em25xx:1;       /* em25xx/em276x/7x/8x family bridge */
 487
 488        unsigned char disconnected:1;   /* device has been diconnected */
 489
 490        int audio_ifnum;
 491
 492        struct v4l2_device v4l2_dev;
 493        struct v4l2_ctrl_handler ctrl_handler;
 494        struct em28xx_board board;
 495
 496        /* Webcam specific fields */
 497        enum em28xx_sensor em28xx_sensor;
 498        int sensor_xres, sensor_yres;
 499        int sensor_xtal;
 500
 501        /* Progressive (non-interlaced) mode */
 502        int progressive;
 503
 504        /* Vinmode/Vinctl used at the driver */
 505        int vinmode, vinctl;
 506
 507        unsigned int has_audio_class:1;
 508        unsigned int has_alsa_audio:1;
 509        unsigned int is_audio_only:1;
 510
 511        /* Controls audio streaming */
 512        struct work_struct wq_trigger;  /* Trigger to start/stop audio for alsa module */
 513        atomic_t       stream_started;  /* stream should be running if true */
 514
 515        struct em28xx_fmt *format;
 516
 517        struct em28xx_IR *ir;
 518
 519        /* Some older em28xx chips needs a waiting time after writing */
 520        unsigned int wait_after_write;
 521
 522        struct list_head        devlist;
 523
 524        u32 i2s_speed;          /* I2S speed for audio digital stream */
 525
 526        struct em28xx_audio_mode audio_mode;
 527
 528        int tuner_type;         /* type of the tuner */
 529        int tuner_addr;         /* tuner address */
 530        int tda9887_conf;
 531
 532        /* i2c i/o */
 533        struct i2c_adapter i2c_adap[NUM_I2C_BUSES];
 534        struct i2c_client i2c_client[NUM_I2C_BUSES];
 535        struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
 536
 537        unsigned char eeprom_addrwidth_16bit:1;
 538        unsigned def_i2c_bus;   /* Default I2C bus */
 539        unsigned cur_i2c_bus;   /* Current I2C bus */
 540        struct rt_mutex i2c_bus_lock;
 541
 542        /* video for linux */
 543        int users;              /* user count for exclusive use */
 544        int streaming_users;    /* Number of actively streaming users */
 545        struct video_device *vdev;      /* video for linux device struct */
 546        v4l2_std_id norm;       /* selected tv norm */
 547        int ctl_freq;           /* selected frequency */
 548        unsigned int ctl_input; /* selected input */
 549        unsigned int ctl_ainput;/* selected audio input */
 550        unsigned int ctl_aoutput;/* selected audio output */
 551        int mute;
 552        int volume;
 553        /* frame properties */
 554        int width;              /* current frame width */
 555        int height;             /* current frame height */
 556        unsigned hscale;        /* horizontal scale factor (see datasheet) */
 557        unsigned vscale;        /* vertical scale factor (see datasheet) */
 558        int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 559        unsigned int video_bytesread;   /* Number of bytes read */
 560
 561        unsigned long hash;     /* eeprom hash - for boards with generic ID */
 562        unsigned long i2c_hash; /* i2c devicelist hash -
 563                                   for boards with generic ID */
 564
 565        struct em28xx_audio adev;
 566
 567        /* capture state tracking */
 568        int capture_type;
 569        unsigned char top_field:1;
 570        int vbi_read;
 571        unsigned int vbi_width;
 572        unsigned int vbi_height; /* lines per field */
 573
 574        struct work_struct         request_module_wk;
 575
 576        /* locks */
 577        struct mutex lock;
 578        struct mutex ctrl_urb_lock;     /* protects urb_buf */
 579        /* spinlock_t queue_lock; */
 580        struct list_head inqueue, outqueue;
 581        struct video_device *vbi_dev;
 582        struct video_device *radio_dev;
 583
 584        /* Videobuf2 */
 585        struct vb2_queue vb_vidq;
 586        struct vb2_queue vb_vbiq;
 587        struct mutex vb_queue_lock;
 588        struct mutex vb_vbi_queue_lock;
 589
 590        /* resources in use */
 591        unsigned int resources;
 592
 593        /* eeprom content */
 594        u8 *eedata;
 595        u16 eedata_len;
 596
 597        /* Isoc control struct */
 598        struct em28xx_dmaqueue vidq;
 599        struct em28xx_dmaqueue vbiq;
 600        struct em28xx_usb_ctl usb_ctl;
 601        spinlock_t slock;
 602
 603        unsigned int field_count;
 604        unsigned int vbi_field_count;
 605
 606        /* usb transfer */
 607        struct usb_device *udev;        /* the usb device */
 608        u8 analog_ep_isoc;      /* address of isoc endpoint for analog */
 609        u8 analog_ep_bulk;      /* address of bulk endpoint for analog */
 610        u8 dvb_ep_isoc;         /* address of isoc endpoint for DVB */
 611        u8 dvb_ep_bulk;         /* address of bulk endpoint for DVB */
 612        int alt;                /* alternate setting */
 613        int max_pkt_size;       /* max packet size of the selected ep at alt */
 614        int packet_multiplier;  /* multiplier for wMaxPacketSize, used for
 615                                   URB buffer size definition */
 616        int num_alt;            /* number of alternative settings */
 617        unsigned int *alt_max_pkt_size_isoc; /* array of isoc wMaxPacketSize */
 618        unsigned int analog_xfer_bulk:1;        /* use bulk instead of isoc
 619                                                   transfers for analog      */
 620        int dvb_alt_isoc;       /* alternate setting for DVB isoc transfers */
 621        unsigned int dvb_max_pkt_size_isoc;     /* isoc max packet size of the
 622                                                   selected DVB ep at dvb_alt */
 623        unsigned int dvb_xfer_bulk:1;           /* use bulk instead of isoc
 624                                                   transfers for DVB          */
 625        char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 626
 627        /* helper funcs that call usb_control_msg */
 628        int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 629                                        char *buf, int len);
 630        int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 631        int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 632                                        char *buf, int len);
 633        int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 634                                      char *buf, int len);
 635        int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 636
 637        enum em28xx_mode mode;
 638
 639        /* register numbers for GPO/GPIO registers */
 640        u16 reg_gpo_num, reg_gpio_num;
 641
 642        /* Caches GPO and GPIO registers */
 643        unsigned char   reg_gpo, reg_gpio;
 644
 645        /* Snapshot button */
 646        char snapshot_button_path[30];  /* path of the input dev */
 647        struct input_dev *sbutton_input_dev;
 648        struct delayed_work sbutton_query_work;
 649
 650        struct em28xx_dvb *dvb;
 651};
 652
 653struct em28xx_ops {
 654        struct list_head next;
 655        char *name;
 656        int id;
 657        int (*init)(struct em28xx *);
 658        int (*fini)(struct em28xx *);
 659};
 660
 661/* Provided by em28xx-i2c.c */
 662void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus);
 663int  em28xx_i2c_register(struct em28xx *dev, unsigned bus,
 664                         enum em28xx_i2c_algo_type algo_type);
 665int  em28xx_i2c_unregister(struct em28xx *dev, unsigned bus);
 666
 667/* Provided by em28xx-core.c */
 668int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 669                            char *buf, int len);
 670int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 671int em28xx_read_reg(struct em28xx *dev, u16 reg);
 672int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 673                          int len);
 674int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 675int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 676int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 677                                 u8 bitmask);
 678
 679int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 680int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 681
 682int em28xx_audio_analog_set(struct em28xx *dev);
 683int em28xx_audio_setup(struct em28xx *dev);
 684
 685int em28xx_colorlevels_set_default(struct em28xx *dev);
 686int em28xx_capture_start(struct em28xx *dev, int start);
 687int em28xx_vbi_supported(struct em28xx *dev);
 688int em28xx_set_outfmt(struct em28xx *dev);
 689int em28xx_resolution_set(struct em28xx *dev);
 690int em28xx_set_alternate(struct em28xx *dev);
 691int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
 692                      int num_bufs, int max_pkt_size, int packet_multiplier);
 693int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
 694                         int xfer_bulk,
 695                         int num_bufs, int max_pkt_size, int packet_multiplier,
 696                         int (*urb_data_copy)
 697                                        (struct em28xx *dev, struct urb *urb));
 698void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
 699void em28xx_stop_urbs(struct em28xx *dev);
 700int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 701int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 702void em28xx_wake_i2c(struct em28xx *dev);
 703int em28xx_register_extension(struct em28xx_ops *dev);
 704void em28xx_unregister_extension(struct em28xx_ops *dev);
 705void em28xx_init_extension(struct em28xx *dev);
 706void em28xx_close_extension(struct em28xx *dev);
 707
 708/* Provided by em28xx-video.c */
 709int em28xx_vb2_setup(struct em28xx *dev);
 710int em28xx_register_analog_devices(struct em28xx *dev);
 711void em28xx_release_analog_resources(struct em28xx *dev);
 712void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv);
 713int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
 714int em28xx_stop_vbi_streaming(struct vb2_queue *vq);
 715extern const struct v4l2_ctrl_ops em28xx_ctrl_ops;
 716
 717/* Provided by em28xx-cards.c */
 718extern struct em28xx_board em28xx_boards[];
 719extern struct usb_device_id em28xx_id_table[];
 720int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 721void em28xx_release_resources(struct em28xx *dev);
 722
 723/* Provided by em28xx-vbi.c */
 724extern struct vb2_ops em28xx_vbi_qops;
 725
 726/* Provided by em28xx-camera.c */
 727int em28xx_detect_sensor(struct em28xx *dev);
 728int em28xx_init_camera(struct em28xx *dev);
 729
 730/* printk macros */
 731
 732#define em28xx_err(fmt, arg...) do {\
 733        printk(KERN_ERR fmt , ##arg); } while (0)
 734
 735#define em28xx_errdev(fmt, arg...) do {\
 736        printk(KERN_ERR "%s: "fmt,\
 737                        dev->name , ##arg); } while (0)
 738
 739#define em28xx_info(fmt, arg...) do {\
 740        printk(KERN_INFO "%s: "fmt,\
 741                        dev->name , ##arg); } while (0)
 742#define em28xx_warn(fmt, arg...) do {\
 743        printk(KERN_WARNING "%s: "fmt,\
 744                        dev->name , ##arg); } while (0)
 745
 746static inline int em28xx_compression_disable(struct em28xx *dev)
 747{
 748        /* side effect of disabling scaler and mixer */
 749        return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 750}
 751
 752/*FIXME: maxw should be dependent of alt mode */
 753static inline unsigned int norm_maxw(struct em28xx *dev)
 754{
 755        if (dev->board.is_webcam)
 756                return dev->sensor_xres;
 757
 758        if (dev->board.max_range_640_480)
 759                return 640;
 760
 761        return 720;
 762}
 763
 764static inline unsigned int norm_maxh(struct em28xx *dev)
 765{
 766        if (dev->board.is_webcam)
 767                return dev->sensor_yres;
 768
 769        if (dev->board.max_range_640_480)
 770                return 480;
 771
 772        return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 773}
 774#endif
 775