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
 179 enum em28xx_mode {
 180         EM28XX_SUSPEND,
 181         EM28XX_ANALOG_MODE,
 182         EM28XX_DIGITAL_MODE,
 183 };
 184
 185 enum em28xx_stream_state {
 186         STREAM_OFF,
 187         STREAM_INTERRUPT,
 188         STREAM_ON,
 189 };
 190
 191 struct em28xx;
 192
 193 struct 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 */
 230 struct 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 */
 238 struct 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
 247 struct 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 */
 258 enum em28xx_io_method {
 259         IO_NONE,
 260         IO_READ,
 261         IO_MMAP,
 262 };
 263
 264 /* inputs */
 265
 266 #define MAX_EM28XX_INPUT 4
 267 enum 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
 280 enum em28xx_ac97_mode {
 281         EM28XX_NO_AC97 = 0,
 282         EM28XX_AC97_EM202,
 283         EM28XX_AC97_SIGMATEL,
 284         EM28XX_AC97_OTHER,
 285 };
 286
 287 struct 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  */
 305 enum 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
 320 enum 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
 342 static inline int ac97_return_record_select(int a_out)
 343 {
 344         return (a_out & 0x700) >> 8;
 345 }
 346
 347 struct em28xx_reg_seq {
 348         int reg;
 349         unsigned char val, mask;
 350         int sleep;
 351 };
 352
 353 struct 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
 363 enum em28xx_decoder {
 364         EM28XX_NODECODER = 0,
 365         EM28XX_TVP5150,
 366         EM28XX_SAA711X,
 367 };
 368
 369 enum em28xx_sensor {
 370         EM28XX_NOSENSOR = 0,
 371         EM28XX_MT9V011,
 372         EM28XX_MT9M001,
 373         EM28XX_MT9M111,
 374 };
 375
 376 enum em28xx_adecoder {
 377         EM28XX_NOADECODER = 0,
 378         EM28XX_TVAUDIO,
 379 };
 380
 381 struct 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
 418 struct 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 */
 433 enum 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
 452 struct 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
 468 struct em28xx;
 469
 470 struct 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 */
 482 struct 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
 622 struct 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 */
 631 void em28xx_do_i2c_scan(struct em28xx *dev);
 632 int  em28xx_i2c_register(struct em28xx *dev);
 633 int  em28xx_i2c_unregister(struct em28xx *dev);
 634
 635 /* Provided by em28xx-core.c */
 636
 637 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 638 void em28xx_queue_unusedframes(struct em28xx *dev);
 639 void em28xx_release_buffers(struct em28xx *dev);
 640
 641 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 642                             char *buf, int len);
 643 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 644 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 645 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 646                           int len);
 647 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 648 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 649
 650 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 651 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 652
 653 int em28xx_audio_analog_set(struct em28xx *dev);
 654 int em28xx_audio_setup(struct em28xx *dev);
 655
 656 int em28xx_colorlevels_set_default(struct em28xx *dev);
 657 int em28xx_capture_start(struct em28xx *dev, int start);
 658 int em28xx_vbi_supported(struct em28xx *dev);
 659 int em28xx_set_outfmt(struct em28xx *dev);
 660 int em28xx_resolution_set(struct em28xx *dev);
 661 int em28xx_set_alternate(struct em28xx *dev);
 662 int 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));
 665 void em28xx_uninit_isoc(struct em28xx *dev);
 666 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 667 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 668 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 669 void em28xx_wake_i2c(struct em28xx *dev);
 670 void em28xx_remove_from_devlist(struct em28xx *dev);
 671 void em28xx_add_into_devlist(struct em28xx *dev);
 672 struct em28xx *em28xx_get_device(int minor,
 673                                  enum v4l2_buf_type *fh_type,
 674                                  int *has_radio);
 675 int em28xx_register_extension(struct em28xx_ops *dev);
 676 void em28xx_unregister_extension(struct em28xx_ops *dev);
 677 void em28xx_init_extension(struct em28xx *dev);
 678 void em28xx_close_extension(struct em28xx *dev);
 679
 680 /* Provided by em28xx-video.c */
 681 int em28xx_register_analog_devices(struct em28xx *dev);
 682 void em28xx_release_analog_resources(struct em28xx *dev);
 683
 684 /* Provided by em28xx-cards.c */
 685 extern int em2800_variant_detect(struct usb_device *udev, int model);
 686 extern void em28xx_pre_card_setup(struct em28xx *dev);
 687 extern void em28xx_card_setup(struct em28xx *dev);
 688 extern struct em28xx_board em28xx_boards[];
 689 extern struct usb_device_id em28xx_id_table[];
 690 extern const unsigned int em28xx_bcount;
 691 void em28xx_register_i2c_ir(struct em28xx *dev);
 692 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 693 void em28xx_release_resources(struct em28xx *dev);
 694
 695 /* Provided by em28xx-input.c */
 696 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 697 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 698 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 699                                      u32 *ir_raw);
 700 void em28xx_register_snapshot_button(struct em28xx *dev);
 701 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 702
 703 int em28xx_ir_init(struct em28xx *dev);
 704 int em28xx_ir_fini(struct em28xx *dev);
 705
 706 /* Provided by em28xx-vbi.c */
 707 extern 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
 725 static 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
 731 static inline int em28xx_contrast_get(struct em28xx *dev)
 732 {
 733         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 734 }
 735
 736 static inline int em28xx_brightness_get(struct em28xx *dev)
 737 {
 738         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 739 }
 740
 741 static inline int em28xx_saturation_get(struct em28xx *dev)
 742 {
 743         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 744 }
 745
 746 static inline int em28xx_u_balance_get(struct em28xx *dev)
 747 {
 748         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 749 }
 750
 751 static inline int em28xx_v_balance_get(struct em28xx *dev)
 752 {
 753         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 754 }
 755
 756 static inline int em28xx_gamma_get(struct em28xx *dev)
 757 {
 758         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 759 }
 760
 761 static 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
 767 static 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
 773 static 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
 779 static 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
 785 static 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
 791 static 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 */
 798 static 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
 809 static 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