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 #define EM2800_BOARD_VC211A                       74
 114 #define EM2882_BOARD_DIKOM_DK300                  75
 115
 116 /* Limits minimum and default number of buffers */
 117 #define EM28XX_MIN_BUF 4
 118 #define EM28XX_DEF_BUF 8
 119
 120 /*Limits the max URB message size */
 121 #define URB_MAX_CTRL_SIZE 80
 122
 123 /* Params for validated field */
 124 #define EM28XX_BOARD_NOT_VALIDATED 1
 125 #define EM28XX_BOARD_VALIDATED     0
 126
 127 /* Params for em28xx_cmd() audio */
 128 #define EM28XX_START_AUDIO      1
 129 #define EM28XX_STOP_AUDIO       0
 130
 131 /* maximum number of em28xx boards */
 132 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 133
 134 /* maximum number of frames that can be queued */
 135 #define EM28XX_NUM_FRAMES 5
 136 /* number of frames that get used for v4l2_read() */
 137 #define EM28XX_NUM_READ_FRAMES 2
 138
 139 /* number of buffers for isoc transfers */
 140 #define EM28XX_NUM_BUFS 5
 141
 142 /* number of packets for each buffer
 143    windows requests only 40 packets .. so we better do the same
 144    this is what I found out for all alternate numbers there!
 145  */
 146 #define EM28XX_NUM_PACKETS 40
 147
 148 #define EM28XX_INTERLACED_DEFAULT 1
 149
 150 /*
 151 #define (use usbview if you want to get the other alternate number infos)
 152 #define
 153 #define alternate number 2
 154 #define                         Endpoint Address: 82
 155                         Direction: in
 156                         Attribute: 1
 157                         Type: Isoc
 158                         Max Packet Size: 1448
 159                         Interval: 125us
 160
 161   alternate number 7
 162
 163                         Endpoint Address: 82
 164                         Direction: in
 165                         Attribute: 1
 166                         Type: Isoc
 167                         Max Packet Size: 3072
 168                         Interval: 125us
 169 */
 170
 171 /* time to wait when stopping the isoc transfer */
 172 #define EM28XX_URB_TIMEOUT \
 173                         msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 174
 175 /* time in msecs to wait for i2c writes to finish */
 176 #define EM2800_I2C_WRITE_TIMEOUT 20
 177
 178 enum em28xx_mode {
 179         EM28XX_SUSPEND,
 180         EM28XX_ANALOG_MODE,
 181         EM28XX_DIGITAL_MODE,
 182 };
 183
 184 enum em28xx_stream_state {
 185         STREAM_OFF,
 186         STREAM_INTERRUPT,
 187         STREAM_ON,
 188 };
 189
 190 struct em28xx;
 191
 192 struct em28xx_usb_isoc_ctl {
 193                 /* max packet size of isoc transaction */
 194         int                             max_pkt_size;
 195
 196                 /* number of allocated urbs */
 197         int                             num_bufs;
 198
 199                 /* urb for isoc transfers */
 200         struct urb                      **urb;
 201
 202                 /* transfer buffers for isoc transfer */
 203         char                            **transfer_buffer;
 204
 205                 /* Last buffer command and region */
 206         u8                              cmd;
 207         int                             pos, size, pktsize;
 208
 209                 /* Last field: ODD or EVEN? */
 210         int                             field;
 211
 212                 /* Stores incomplete commands */
 213         u32                             tmp_buf;
 214         int                             tmp_buf_len;
 215
 216                 /* Stores already requested buffers */
 217         struct em28xx_buffer            *vid_buf;
 218         struct em28xx_buffer            *vbi_buf;
 219
 220                 /* Stores the number of received fields */
 221         int                             nfields;
 222
 223                 /* isoc urb callback */
 224         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 225
 226 };
 227
 228 /* Struct to enumberate video formats */
 229 struct em28xx_fmt {
 230         char  *name;
 231         u32   fourcc;          /* v4l2 format id */
 232         int   depth;
 233         int   reg;
 234 };
 235
 236 /* buffer for one video frame */
 237 struct em28xx_buffer {
 238         /* common v4l buffer stuff -- must be first */
 239         struct videobuf_buffer vb;
 240
 241         struct list_head frame;
 242         int top_field;
 243         int receiving;
 244 };
 245
 246 struct em28xx_dmaqueue {
 247         struct list_head       active;
 248         struct list_head       queued;
 249
 250         wait_queue_head_t          wq;
 251
 252         /* Counters to control buffer fill */
 253         int                        pos;
 254 };
 255
 256 /* io methods */
 257 enum em28xx_io_method {
 258         IO_NONE,
 259         IO_READ,
 260         IO_MMAP,
 261 };
 262
 263 /* inputs */
 264
 265 #define MAX_EM28XX_INPUT 4
 266 enum enum28xx_itype {
 267         EM28XX_VMUX_COMPOSITE1 = 1,
 268         EM28XX_VMUX_COMPOSITE2,
 269         EM28XX_VMUX_COMPOSITE3,
 270         EM28XX_VMUX_COMPOSITE4,
 271         EM28XX_VMUX_SVIDEO,
 272         EM28XX_VMUX_TELEVISION,
 273         EM28XX_VMUX_CABLE,
 274         EM28XX_VMUX_DVB,
 275         EM28XX_VMUX_DEBUG,
 276         EM28XX_RADIO,
 277 };
 278
 279 enum em28xx_ac97_mode {
 280         EM28XX_NO_AC97 = 0,
 281         EM28XX_AC97_EM202,
 282         EM28XX_AC97_SIGMATEL,
 283         EM28XX_AC97_OTHER,
 284 };
 285
 286 struct em28xx_audio_mode {
 287         enum em28xx_ac97_mode ac97;
 288
 289         u16 ac97_feat;
 290         u32 ac97_vendor_id;
 291
 292         unsigned int has_audio:1;
 293
 294         unsigned int i2s_3rates:1;
 295         unsigned int i2s_5rates:1;
 296 };
 297
 298 /* em28xx has two audio inputs: tuner and line in.
 299    However, on most devices, an auxiliary AC97 codec device is used.
 300    The AC97 device may have several different inputs and outputs,
 301    depending on their model. So, it is possible to use AC97 mixer to
 302    address more than two different entries.
 303  */
 304 enum em28xx_amux {
 305         /* This is the only entry for em28xx tuner input */
 306         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 307
 308         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 309
 310         /* Some less-common mixer setups */
 311         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 312         EM28XX_AMUX_PHONE,
 313         EM28XX_AMUX_MIC,
 314         EM28XX_AMUX_CD,
 315         EM28XX_AMUX_AUX,
 316         EM28XX_AMUX_PCM_OUT,
 317 };
 318
 319 enum em28xx_aout {
 320         /* AC97 outputs */
 321         EM28XX_AOUT_MASTER = 1 << 0,
 322         EM28XX_AOUT_LINE   = 1 << 1,
 323         EM28XX_AOUT_MONO   = 1 << 2,
 324         EM28XX_AOUT_LFE    = 1 << 3,
 325         EM28XX_AOUT_SURR   = 1 << 4,
 326
 327         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 328         EM28XX_AOUT_PCM_IN = 1 << 7,
 329
 330         /* Bits 10-8 are used to indicate the PCM IN record select */
 331         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 332         EM28XX_AOUT_PCM_CD      = 1 << 8,
 333         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 334         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 335         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 336         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 337         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 338         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 339 };
 340
 341 static inline int ac97_return_record_select(int a_out)
 342 {
 343         return (a_out & 0x700) >> 8;
 344 }
 345
 346 struct em28xx_reg_seq {
 347         int reg;
 348         unsigned char val, mask;
 349         int sleep;
 350 };
 351
 352 struct em28xx_input {
 353         enum enum28xx_itype type;
 354         unsigned int vmux;
 355         enum em28xx_amux amux;
 356         enum em28xx_aout aout;
 357         struct em28xx_reg_seq *gpio;
 358 };
 359
 360 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 361
 362 enum em28xx_decoder {
 363         EM28XX_NODECODER = 0,
 364         EM28XX_TVP5150,
 365         EM28XX_SAA711X,
 366 };
 367
 368 enum em28xx_sensor {
 369         EM28XX_NOSENSOR = 0,
 370         EM28XX_MT9V011,
 371         EM28XX_MT9M001,
 372         EM28XX_MT9M111,
 373 };
 374
 375 enum em28xx_adecoder {
 376         EM28XX_NOADECODER = 0,
 377         EM28XX_TVAUDIO,
 378 };
 379
 380 struct em28xx_board {
 381         char *name;
 382         int vchannels;
 383         int tuner_type;
 384         int tuner_addr;
 385
 386         /* i2c flags */
 387         unsigned int tda9887_conf;
 388
 389         /* GPIO sequences */
 390         struct em28xx_reg_seq *dvb_gpio;
 391         struct em28xx_reg_seq *suspend_gpio;
 392         struct em28xx_reg_seq *tuner_gpio;
 393         struct em28xx_reg_seq *mute_gpio;
 394
 395         unsigned int is_em2800:1;
 396         unsigned int has_msp34xx:1;
 397         unsigned int mts_firmware:1;
 398         unsigned int max_range_640_480:1;
 399         unsigned int has_dvb:1;
 400         unsigned int has_snapshot_button:1;
 401         unsigned int is_webcam:1;
 402         unsigned int valid:1;
 403         unsigned int has_ir_i2c:1;
 404
 405         unsigned char xclk, i2c_speed;
 406         unsigned char radio_addr;
 407         unsigned short tvaudio_addr;
 408
 409         enum em28xx_decoder decoder;
 410         enum em28xx_adecoder adecoder;
 411
 412         struct em28xx_input       input[MAX_EM28XX_INPUT];
 413         struct em28xx_input       radio;
 414         struct ir_scancode_table  *ir_codes;
 415 };
 416
 417 struct em28xx_eeprom {
 418         u32 id;                 /* 0x9567eb1a */
 419         u16 vendor_ID;
 420         u16 product_ID;
 421
 422         u16 chip_conf;
 423
 424         u16 board_conf;
 425
 426         u16 string1, string2, string3;
 427
 428         u8 string_idx_table;
 429 };
 430
 431 /* device states */
 432 enum em28xx_dev_state {
 433         DEV_INITIALIZED = 0x01,
 434         DEV_DISCONNECTED = 0x02,
 435         DEV_MISCONFIGURED = 0x04,
 436 };
 437
 438 #define EM28XX_AUDIO_BUFS 5
 439 #define EM28XX_NUM_AUDIO_PACKETS 64
 440 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 441 #define EM28XX_CAPTURE_STREAM_EN 1
 442
 443 /* em28xx extensions */
 444 #define EM28XX_AUDIO   0x10
 445 #define EM28XX_DVB     0x20
 446
 447 /* em28xx resource types (used for res_get/res_lock etc */
 448 #define EM28XX_RESOURCE_VIDEO 0x01
 449 #define EM28XX_RESOURCE_VBI   0x02
 450
 451 struct em28xx_audio {
 452         char name[50];
 453         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 454         struct urb *urb[EM28XX_AUDIO_BUFS];
 455         struct usb_device *udev;
 456         unsigned int capture_transfer_done;
 457         struct snd_pcm_substream   *capture_pcm_substream;
 458
 459         unsigned int hwptr_done_capture;
 460         struct snd_card            *sndcard;
 461
 462         int users;
 463         enum em28xx_stream_state capture_stream;
 464         spinlock_t slock;
 465 };
 466
 467 struct em28xx;
 468
 469 struct em28xx_fh {
 470         struct em28xx *dev;
 471         int           radio;
 472         unsigned int  resources;
 473
 474         struct videobuf_queue        vb_vidq;
 475         struct videobuf_queue        vb_vbiq;
 476
 477         enum v4l2_buf_type           type;
 478 };
 479
 480 /* main device struct */
 481 struct em28xx {
 482         /* generic device properties */
 483         char name[30];          /* name (including minor) of the device */
 484         int model;              /* index in the device_data struct */
 485         int devno;              /* marks the number of this device */
 486         enum em28xx_chip_id chip_id;
 487
 488         struct v4l2_device v4l2_dev;
 489         struct em28xx_board board;
 490
 491         /* Webcam specific fields */
 492         enum em28xx_sensor em28xx_sensor;
 493         int sensor_xres, sensor_yres;
 494         int sensor_xtal;
 495
 496         /* Allows progressive (e. g. non-interlaced) mode */
 497         int progressive;
 498
 499         /* Vinmode/Vinctl used at the driver */
 500         int vinmode, vinctl;
 501
 502         unsigned int has_audio_class:1;
 503         unsigned int has_alsa_audio:1;
 504
 505         struct em28xx_fmt *format;
 506
 507         struct em28xx_IR *ir;
 508
 509         /* Some older em28xx chips needs a waiting time after writing */
 510         unsigned int wait_after_write;
 511
 512         struct list_head        devlist;
 513
 514         u32 i2s_speed;          /* I2S speed for audio digital stream */
 515
 516         struct em28xx_audio_mode audio_mode;
 517
 518         int tuner_type;         /* type of the tuner */
 519         int tuner_addr;         /* tuner address */
 520         int tda9887_conf;
 521         /* i2c i/o */
 522         struct i2c_adapter i2c_adap;
 523         struct i2c_client i2c_client;
 524         /* video for linux */
 525         int users;              /* user count for exclusive use */
 526         struct video_device *vdev;      /* video for linux device struct */
 527         v4l2_std_id norm;       /* selected tv norm */
 528         int ctl_freq;           /* selected frequency */
 529         unsigned int ctl_input; /* selected input */
 530         unsigned int ctl_ainput;/* selected audio input */
 531         unsigned int ctl_aoutput;/* selected audio output */
 532         int mute;
 533         int volume;
 534         /* frame properties */
 535         int width;              /* current frame width */
 536         int height;             /* current frame height */
 537         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 538         unsigned vscale;        /* vertical scale factor (see datasheet) */
 539         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 540         unsigned int video_bytesread;   /* Number of bytes read */
 541
 542         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 543         unsigned long i2c_hash; /* i2c devicelist hash -
 544                                    for boards with generic ID */
 545
 546         struct em28xx_audio adev;
 547
 548         /* states */
 549         enum em28xx_dev_state state;
 550         enum em28xx_io_method io;
 551
 552         /* vbi related state tracking */
 553         int capture_type;
 554         int vbi_read;
 555         unsigned char cur_field;
 556         unsigned int vbi_width;
 557         unsigned int vbi_height; /* lines per field */
 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 IR_i2c_init_data init_data;
 619 };
 620
 621 struct em28xx_ops {
 622         struct list_head next;
 623         char *name;
 624         int id;
 625         int (*init)(struct em28xx *);
 626         int (*fini)(struct em28xx *);
 627 };
 628
 629 /* Provided by em28xx-i2c.c */
 630 void em28xx_do_i2c_scan(struct em28xx *dev);
 631 int  em28xx_i2c_register(struct em28xx *dev);
 632 int  em28xx_i2c_unregister(struct em28xx *dev);
 633
 634 /* Provided by em28xx-core.c */
 635
 636 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 637 void em28xx_queue_unusedframes(struct em28xx *dev);
 638 void em28xx_release_buffers(struct em28xx *dev);
 639
 640 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 641                             char *buf, int len);
 642 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 643 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 644 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 645                           int len);
 646 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 647 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 648 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 649                                  u8 bitmask);
 650
 651 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 652 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 653
 654 int em28xx_audio_analog_set(struct em28xx *dev);
 655 int em28xx_audio_setup(struct em28xx *dev);
 656
 657 int em28xx_colorlevels_set_default(struct em28xx *dev);
 658 int em28xx_capture_start(struct em28xx *dev, int start);
 659 int em28xx_vbi_supported(struct em28xx *dev);
 660 int em28xx_set_outfmt(struct em28xx *dev);
 661 int em28xx_resolution_set(struct em28xx *dev);
 662 int em28xx_set_alternate(struct em28xx *dev);
 663 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 664                      int num_bufs, int max_pkt_size,
 665                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 666 void em28xx_uninit_isoc(struct em28xx *dev);
 667 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 668 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 669 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 670 void em28xx_wake_i2c(struct em28xx *dev);
 671 void em28xx_remove_from_devlist(struct em28xx *dev);
 672 void em28xx_add_into_devlist(struct em28xx *dev);
 673 int em28xx_register_extension(struct em28xx_ops *dev);
 674 void em28xx_unregister_extension(struct em28xx_ops *dev);
 675 void em28xx_init_extension(struct em28xx *dev);
 676 void em28xx_close_extension(struct em28xx *dev);
 677
 678 /* Provided by em28xx-video.c */
 679 int em28xx_register_analog_devices(struct em28xx *dev);
 680 void em28xx_release_analog_resources(struct em28xx *dev);
 681
 682 /* Provided by em28xx-cards.c */
 683 extern int em2800_variant_detect(struct usb_device *udev, int model);
 684 extern void em28xx_pre_card_setup(struct em28xx *dev);
 685 extern void em28xx_card_setup(struct em28xx *dev);
 686 extern struct em28xx_board em28xx_boards[];
 687 extern struct usb_device_id em28xx_id_table[];
 688 extern const unsigned int em28xx_bcount;
 689 void em28xx_register_i2c_ir(struct em28xx *dev);
 690 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 691 void em28xx_release_resources(struct em28xx *dev);
 692
 693 /* Provided by em28xx-input.c */
 694 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 695 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 696 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 697                                      u32 *ir_raw);
 698 int em28xx_get_key_winfast_usbii_deluxe(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 || dev->board.is_em2800)
 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