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
 113 /* Limits minimum and default number of buffers */
 114 #define EM28XX_MIN_BUF 4
 115 #define EM28XX_DEF_BUF 8
 116
 117 /*Limits the max URB message size */
 118 #define URB_MAX_CTRL_SIZE 80
 119
 120 /* Params for validated field */
 121 #define EM28XX_BOARD_NOT_VALIDATED 1
 122 #define EM28XX_BOARD_VALIDATED     0
 123
 124 /* Params for em28xx_cmd() audio */
 125 #define EM28XX_START_AUDIO      1
 126 #define EM28XX_STOP_AUDIO       0
 127
 128 /* maximum number of em28xx boards */
 129 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 130
 131 /* maximum number of frames that can be queued */
 132 #define EM28XX_NUM_FRAMES 5
 133 /* number of frames that get used for v4l2_read() */
 134 #define EM28XX_NUM_READ_FRAMES 2
 135
 136 /* number of buffers for isoc transfers */
 137 #define EM28XX_NUM_BUFS 5
 138
 139 /* number of packets for each buffer
 140    windows requests only 40 packets .. so we better do the same
 141    this is what I found out for all alternate numbers there!
 142  */
 143 #define EM28XX_NUM_PACKETS 40
 144
 145 /* default alternate; 0 means choose the best */
 146 #define EM28XX_PINOUT 0
 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            *buf;
 218
 219                 /* Stores the number of received fields */
 220         int                             nfields;
 221
 222                 /* isoc urb callback */
 223         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 224
 225 };
 226
 227 /* Struct to enumberate video formats */
 228 struct em28xx_fmt {
 229         char  *name;
 230         u32   fourcc;          /* v4l2 format id */
 231         int   depth;
 232         int   reg;
 233 };
 234
 235 /* buffer for one video frame */
 236 struct em28xx_buffer {
 237         /* common v4l buffer stuff -- must be first */
 238         struct videobuf_buffer vb;
 239
 240         struct list_head frame;
 241         int top_field;
 242         int receiving;
 243 };
 244
 245 struct em28xx_dmaqueue {
 246         struct list_head       active;
 247         struct list_head       queued;
 248
 249         wait_queue_head_t          wq;
 250
 251         /* Counters to control buffer fill */
 252         int                        pos;
 253 };
 254
 255 /* io methods */
 256 enum em28xx_io_method {
 257         IO_NONE,
 258         IO_READ,
 259         IO_MMAP,
 260 };
 261
 262 /* inputs */
 263
 264 #define MAX_EM28XX_INPUT 4
 265 enum enum28xx_itype {
 266         EM28XX_VMUX_COMPOSITE1 = 1,
 267         EM28XX_VMUX_COMPOSITE2,
 268         EM28XX_VMUX_COMPOSITE3,
 269         EM28XX_VMUX_COMPOSITE4,
 270         EM28XX_VMUX_SVIDEO,
 271         EM28XX_VMUX_TELEVISION,
 272         EM28XX_VMUX_CABLE,
 273         EM28XX_VMUX_DVB,
 274         EM28XX_VMUX_DEBUG,
 275         EM28XX_RADIO,
 276 };
 277
 278 enum em28xx_ac97_mode {
 279         EM28XX_NO_AC97 = 0,
 280         EM28XX_AC97_EM202,
 281         EM28XX_AC97_SIGMATEL,
 282         EM28XX_AC97_OTHER,
 283 };
 284
 285 struct em28xx_audio_mode {
 286         enum em28xx_ac97_mode ac97;
 287
 288         u16 ac97_feat;
 289         u32 ac97_vendor_id;
 290
 291         unsigned int has_audio:1;
 292
 293         unsigned int i2s_3rates:1;
 294         unsigned int i2s_5rates:1;
 295 };
 296
 297 /* em28xx has two audio inputs: tuner and line in.
 298    However, on most devices, an auxiliary AC97 codec device is used.
 299    The AC97 device may have several different inputs and outputs,
 300    depending on their model. So, it is possible to use AC97 mixer to
 301    address more than two different entries.
 302  */
 303 enum em28xx_amux {
 304         /* This is the only entry for em28xx tuner input */
 305         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 306
 307         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 308
 309         /* Some less-common mixer setups */
 310         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 311         EM28XX_AMUX_PHONE,
 312         EM28XX_AMUX_MIC,
 313         EM28XX_AMUX_CD,
 314         EM28XX_AMUX_AUX,
 315         EM28XX_AMUX_PCM_OUT,
 316 };
 317
 318 enum em28xx_aout {
 319         /* AC97 outputs */
 320         EM28XX_AOUT_MASTER = 1 << 0,
 321         EM28XX_AOUT_LINE   = 1 << 1,
 322         EM28XX_AOUT_MONO   = 1 << 2,
 323         EM28XX_AOUT_LFE    = 1 << 3,
 324         EM28XX_AOUT_SURR   = 1 << 4,
 325
 326         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 327         EM28XX_AOUT_PCM_IN = 1 << 7,
 328
 329         /* Bits 10-8 are used to indicate the PCM IN record select */
 330         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 331         EM28XX_AOUT_PCM_CD      = 1 << 8,
 332         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 333         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 334         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 335         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 336         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 337         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 338 };
 339
 340 static inline int ac97_return_record_select(int a_out)
 341 {
 342         return (a_out & 0x700) >> 8;
 343 }
 344
 345 struct em28xx_reg_seq {
 346         int reg;
 347         unsigned char val, mask;
 348         int sleep;
 349 };
 350
 351 struct em28xx_input {
 352         enum enum28xx_itype type;
 353         unsigned int vmux;
 354         enum em28xx_amux amux;
 355         enum em28xx_aout aout;
 356         struct em28xx_reg_seq *gpio;
 357 };
 358
 359 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 360
 361 enum em28xx_decoder {
 362         EM28XX_NODECODER = 0,
 363         EM28XX_TVP5150,
 364         EM28XX_SAA711X,
 365 };
 366
 367 enum em28xx_sensor {
 368         EM28XX_NOSENSOR = 0,
 369         EM28XX_MT9V011,
 370         EM28XX_MT9M001,
 371         EM28XX_MT9M111,
 372 };
 373
 374 enum em28xx_adecoder {
 375         EM28XX_NOADECODER = 0,
 376         EM28XX_TVAUDIO,
 377 };
 378
 379 struct em28xx_board {
 380         char *name;
 381         int vchannels;
 382         int tuner_type;
 383         int tuner_addr;
 384
 385         /* i2c flags */
 386         unsigned int tda9887_conf;
 387
 388         /* GPIO sequences */
 389         struct em28xx_reg_seq *dvb_gpio;
 390         struct em28xx_reg_seq *suspend_gpio;
 391         struct em28xx_reg_seq *tuner_gpio;
 392         struct em28xx_reg_seq *mute_gpio;
 393
 394         unsigned int is_em2800:1;
 395         unsigned int has_msp34xx:1;
 396         unsigned int mts_firmware:1;
 397         unsigned int max_range_640_480:1;
 398         unsigned int has_dvb:1;
 399         unsigned int has_snapshot_button:1;
 400         unsigned int is_webcam:1;
 401         unsigned int valid:1;
 402         unsigned int has_ir_i2c:1;
 403
 404         unsigned char xclk, i2c_speed;
 405         unsigned char radio_addr;
 406         unsigned short tvaudio_addr;
 407
 408         enum em28xx_decoder decoder;
 409         enum em28xx_adecoder adecoder;
 410
 411         struct em28xx_input       input[MAX_EM28XX_INPUT];
 412         struct em28xx_input       radio;
 413         struct ir_scancode_table  *ir_codes;
 414 };
 415
 416 struct em28xx_eeprom {
 417         u32 id;                 /* 0x9567eb1a */
 418         u16 vendor_ID;
 419         u16 product_ID;
 420
 421         u16 chip_conf;
 422
 423         u16 board_conf;
 424
 425         u16 string1, string2, string3;
 426
 427         u8 string_idx_table;
 428 };
 429
 430 /* device states */
 431 enum em28xx_dev_state {
 432         DEV_INITIALIZED = 0x01,
 433         DEV_DISCONNECTED = 0x02,
 434         DEV_MISCONFIGURED = 0x04,
 435 };
 436
 437 #define EM28XX_AUDIO_BUFS 5
 438 #define EM28XX_NUM_AUDIO_PACKETS 64
 439 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 440 #define EM28XX_CAPTURE_STREAM_EN 1
 441
 442 /* em28xx extensions */
 443 #define EM28XX_AUDIO   0x10
 444 #define EM28XX_DVB     0x20
 445
 446 struct em28xx_audio {
 447         char name[50];
 448         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 449         struct urb *urb[EM28XX_AUDIO_BUFS];
 450         struct usb_device *udev;
 451         unsigned int capture_transfer_done;
 452         struct snd_pcm_substream   *capture_pcm_substream;
 453
 454         unsigned int hwptr_done_capture;
 455         struct snd_card            *sndcard;
 456
 457         int users;
 458         enum em28xx_stream_state capture_stream;
 459         spinlock_t slock;
 460 };
 461
 462 struct em28xx;
 463
 464 struct em28xx_fh {
 465         struct em28xx *dev;
 466         unsigned int  stream_on:1;      /* Locks streams */
 467         int           radio;
 468
 469         struct videobuf_queue        vb_vidq;
 470
 471         enum v4l2_buf_type           type;
 472 };
 473
 474 /* main device struct */
 475 struct em28xx {
 476         /* generic device properties */
 477         char name[30];          /* name (including minor) of the device */
 478         int model;              /* index in the device_data struct */
 479         int devno;              /* marks the number of this device */
 480         enum em28xx_chip_id chip_id;
 481
 482         struct v4l2_device v4l2_dev;
 483         struct em28xx_board board;
 484
 485         /* Webcam specific fields */
 486         enum em28xx_sensor em28xx_sensor;
 487         int sensor_xres, sensor_yres;
 488         int sensor_xtal;
 489
 490         /* Allows progressive (e. g. non-interlaced) mode */
 491         int progressive;
 492
 493         /* Vinmode/Vinctl used at the driver */
 494         int vinmode, vinctl;
 495
 496         unsigned int stream_on:1;       /* Locks streams */
 497         unsigned int has_audio_class:1;
 498         unsigned int has_alsa_audio:1;
 499
 500         struct em28xx_fmt *format;
 501
 502         struct em28xx_IR *ir;
 503
 504         /* Some older em28xx chips needs a waiting time after writing */
 505         unsigned int wait_after_write;
 506
 507         struct list_head        devlist;
 508
 509         u32 i2s_speed;          /* I2S speed for audio digital stream */
 510
 511         struct em28xx_audio_mode audio_mode;
 512
 513         int tuner_type;         /* type of the tuner */
 514         int tuner_addr;         /* tuner address */
 515         int tda9887_conf;
 516         /* i2c i/o */
 517         struct i2c_adapter i2c_adap;
 518         struct i2c_client i2c_client;
 519         /* video for linux */
 520         int users;              /* user count for exclusive use */
 521         struct video_device *vdev;      /* video for linux device struct */
 522         v4l2_std_id norm;       /* selected tv norm */
 523         int ctl_freq;           /* selected frequency */
 524         unsigned int ctl_input; /* selected input */
 525         unsigned int ctl_ainput;/* selected audio input */
 526         unsigned int ctl_aoutput;/* selected audio output */
 527         int mute;
 528         int volume;
 529         /* frame properties */
 530         int width;              /* current frame width */
 531         int height;             /* current frame height */
 532         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 533         unsigned vscale;        /* vertical scale factor (see datasheet) */
 534         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 535         unsigned int video_bytesread;   /* Number of bytes read */
 536
 537         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 538         unsigned long i2c_hash; /* i2c devicelist hash -
 539                                    for boards with generic ID */
 540
 541         struct em28xx_audio adev;
 542
 543         /* states */
 544         enum em28xx_dev_state state;
 545         enum em28xx_io_method io;
 546
 547         struct work_struct         request_module_wk;
 548
 549         /* locks */
 550         struct mutex lock;
 551         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 552         /* spinlock_t queue_lock; */
 553         struct list_head inqueue, outqueue;
 554         wait_queue_head_t open, wait_frame, wait_stream;
 555         struct video_device *vbi_dev;
 556         struct video_device *radio_dev;
 557
 558         unsigned char eedata[256];
 559
 560         /* Isoc control struct */
 561         struct em28xx_dmaqueue vidq;
 562         struct em28xx_usb_isoc_ctl isoc_ctl;
 563         spinlock_t slock;
 564
 565         /* usb transfer */
 566         struct usb_device *udev;        /* the usb device */
 567         int alt;                /* alternate */
 568         int max_pkt_size;       /* max packet size of isoc transaction */
 569         int num_alt;            /* Number of alternative settings */
 570         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 571         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 572         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
 573                                                    transfer */
 574         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 575
 576         /* helper funcs that call usb_control_msg */
 577         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 578                                         char *buf, int len);
 579         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 580         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 581                                         char *buf, int len);
 582         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 583                                       char *buf, int len);
 584         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 585
 586         enum em28xx_mode mode;
 587
 588         /* register numbers for GPO/GPIO registers */
 589         u16 reg_gpo_num, reg_gpio_num;
 590
 591         /* Caches GPO and GPIO registers */
 592         unsigned char   reg_gpo, reg_gpio;
 593
 594         /* Snapshot button */
 595         char snapshot_button_path[30];  /* path of the input dev */
 596         struct input_dev *sbutton_input_dev;
 597         struct delayed_work sbutton_query_work;
 598
 599         struct em28xx_dvb *dvb;
 600
 601         /* I2C keyboard data */
 602         struct i2c_board_info info;
 603         struct IR_i2c_init_data init_data;
 604 };
 605
 606 struct em28xx_ops {
 607         struct list_head next;
 608         char *name;
 609         int id;
 610         int (*init)(struct em28xx *);
 611         int (*fini)(struct em28xx *);
 612 };
 613
 614 /* Provided by em28xx-i2c.c */
 615 void em28xx_do_i2c_scan(struct em28xx *dev);
 616 int  em28xx_i2c_register(struct em28xx *dev);
 617 int  em28xx_i2c_unregister(struct em28xx *dev);
 618
 619 /* Provided by em28xx-core.c */
 620
 621 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 622 void em28xx_queue_unusedframes(struct em28xx *dev);
 623 void em28xx_release_buffers(struct em28xx *dev);
 624
 625 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 626                             char *buf, int len);
 627 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 628 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 629 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 630                           int len);
 631 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 632 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 633
 634 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 635 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 636
 637 int em28xx_audio_analog_set(struct em28xx *dev);
 638 int em28xx_audio_setup(struct em28xx *dev);
 639
 640 int em28xx_colorlevels_set_default(struct em28xx *dev);
 641 int em28xx_capture_start(struct em28xx *dev, int start);
 642 int em28xx_set_outfmt(struct em28xx *dev);
 643 int em28xx_resolution_set(struct em28xx *dev);
 644 int em28xx_set_alternate(struct em28xx *dev);
 645 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 646                      int num_bufs, int max_pkt_size,
 647                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 648 void em28xx_uninit_isoc(struct em28xx *dev);
 649 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 650 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 651 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 652 void em28xx_wake_i2c(struct em28xx *dev);
 653 void em28xx_remove_from_devlist(struct em28xx *dev);
 654 void em28xx_add_into_devlist(struct em28xx *dev);
 655 struct em28xx *em28xx_get_device(int minor,
 656                                  enum v4l2_buf_type *fh_type,
 657                                  int *has_radio);
 658 int em28xx_register_extension(struct em28xx_ops *dev);
 659 void em28xx_unregister_extension(struct em28xx_ops *dev);
 660 void em28xx_init_extension(struct em28xx *dev);
 661 void em28xx_close_extension(struct em28xx *dev);
 662
 663 /* Provided by em28xx-video.c */
 664 int em28xx_register_analog_devices(struct em28xx *dev);
 665 void em28xx_release_analog_resources(struct em28xx *dev);
 666
 667 /* Provided by em28xx-cards.c */
 668 extern int em2800_variant_detect(struct usb_device *udev, int model);
 669 extern void em28xx_pre_card_setup(struct em28xx *dev);
 670 extern void em28xx_card_setup(struct em28xx *dev);
 671 extern struct em28xx_board em28xx_boards[];
 672 extern struct usb_device_id em28xx_id_table[];
 673 extern const unsigned int em28xx_bcount;
 674 void em28xx_register_i2c_ir(struct em28xx *dev);
 675 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 676 void em28xx_release_resources(struct em28xx *dev);
 677
 678 /* Provided by em28xx-input.c */
 679 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 680 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 681 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 682                                      u32 *ir_raw);
 683 void em28xx_register_snapshot_button(struct em28xx *dev);
 684 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 685
 686 int em28xx_ir_init(struct em28xx *dev);
 687 int em28xx_ir_fini(struct em28xx *dev);
 688
 689 /* printk macros */
 690
 691 #define em28xx_err(fmt, arg...) do {\
 692         printk(KERN_ERR fmt , ##arg); } while (0)
 693
 694 #define em28xx_errdev(fmt, arg...) do {\
 695         printk(KERN_ERR "%s: "fmt,\
 696                         dev->name , ##arg); } while (0)
 697
 698 #define em28xx_info(fmt, arg...) do {\
 699         printk(KERN_INFO "%s: "fmt,\
 700                         dev->name , ##arg); } while (0)
 701 #define em28xx_warn(fmt, arg...) do {\
 702         printk(KERN_WARNING "%s: "fmt,\
 703                         dev->name , ##arg); } while (0)
 704
 705 static inline int em28xx_compression_disable(struct em28xx *dev)
 706 {
 707         /* side effect of disabling scaler and mixer */
 708         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 709 }
 710
 711 static inline int em28xx_contrast_get(struct em28xx *dev)
 712 {
 713         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 714 }
 715
 716 static inline int em28xx_brightness_get(struct em28xx *dev)
 717 {
 718         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 719 }
 720
 721 static inline int em28xx_saturation_get(struct em28xx *dev)
 722 {
 723         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 724 }
 725
 726 static inline int em28xx_u_balance_get(struct em28xx *dev)
 727 {
 728         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 729 }
 730
 731 static inline int em28xx_v_balance_get(struct em28xx *dev)
 732 {
 733         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 734 }
 735
 736 static inline int em28xx_gamma_get(struct em28xx *dev)
 737 {
 738         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 739 }
 740
 741 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 742 {
 743         u8 tmp = (u8) val;
 744         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 745 }
 746
 747 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 748 {
 749         u8 tmp = (u8) val;
 750         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 751 }
 752
 753 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 754 {
 755         u8 tmp = (u8) val;
 756         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 757 }
 758
 759 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 760 {
 761         u8 tmp = (u8) val;
 762         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 763 }
 764
 765 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 766 {
 767         u8 tmp = (u8) val;
 768         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 769 }
 770
 771 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 772 {
 773         u8 tmp = (u8) val;
 774         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 775 }
 776
 777 /*FIXME: maxw should be dependent of alt mode */
 778 static inline unsigned int norm_maxw(struct em28xx *dev)
 779 {
 780         if (dev->board.is_webcam)
 781                 return dev->sensor_xres;
 782
 783         if (dev->board.max_range_640_480)
 784                 return 640;
 785
 786         return 720;
 787 }
 788
 789 static inline unsigned int norm_maxh(struct em28xx *dev)
 790 {
 791         if (dev->board.is_webcam)
 792                 return dev->sensor_yres;
 793
 794         if (dev->board.max_range_640_480)
 795                 return 480;
 796
 797         return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 798 }
 799 #endif