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/workqueue.h>
  29 #include <linux/i2c.h>
  30 #include <linux/mutex.h>
  31 #include <linux/videodev2.h>
  32
  33 #include <media/videobuf-vmalloc.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/ir-kbd-i2c.h>
  36 #include <media/rc-core.h>
  37 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
  38 #include <media/videobuf-dvb.h>
  39 #endif
  40 #include "tuner-xc2028.h"
  41 #include "em28xx-reg.h"
  42
  43 /* Boards supported by driver */
  44 #define EM2800_BOARD_UNKNOWN                    0
  45 #define EM2820_BOARD_UNKNOWN                    1
  46 #define EM2820_BOARD_TERRATEC_CINERGY_250       2
  47 #define EM2820_BOARD_PINNACLE_USB_2             3
  48 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
  49 #define EM2820_BOARD_MSI_VOX_USB_2              5
  50 #define EM2800_BOARD_TERRATEC_CINERGY_200       6
  51 #define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
  52 #define EM2800_BOARD_KWORLD_USB2800             8
  53 #define EM2820_BOARD_PINNACLE_DVC_90            9
  54 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900    10
  55 #define EM2880_BOARD_TERRATEC_HYBRID_XS         11
  56 #define EM2820_BOARD_KWORLD_PVRTV2800RF         12
  57 #define EM2880_BOARD_TERRATEC_PRODIGY_XS        13
  58 #define EM2820_BOARD_PROLINK_PLAYTV_USB2        14
  59 #define EM2800_BOARD_VGEAR_POCKETTV             15
  60 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  61 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO       17
  62 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
  63 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN   19
  64 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
  65 #define EM2800_BOARD_GRABBEEX_USB2800           21
  66 #define EM2750_BOARD_UNKNOWN                      22
  67 #define EM2750_BOARD_DLCW_130                     23
  68 #define EM2820_BOARD_DLINK_USB_TV                 24
  69 #define EM2820_BOARD_GADMEI_UTV310                25
  70 #define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  71 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  72 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  73 #define EM2860_BOARD_TVP5150_REFERENCE_DESIGN     29
  74 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  75 #define EM2821_BOARD_USBGEAR_VD204                31
  76 #define EM2821_BOARD_SUPERCOMP_USB_2              32
  77 #define EM2860_BOARD_ELGATO_VIDEO_CAPTURE         33
  78 #define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  79 #define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  80 #define EM2860_BOARD_NETGMBH_CAM                  36
  81 #define EM2860_BOARD_GADMEI_UTV330                37
  82 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  83 #define EM2861_BOARD_KWORLD_PVRTV_300U            39
  84 #define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  85 #define EM2870_BOARD_KWORLD_350U                  41
  86 #define EM2870_BOARD_KWORLD_355U                  42
  87 #define EM2870_BOARD_TERRATEC_XS                  43
  88 #define EM2870_BOARD_TERRATEC_XS_MT2060           44
  89 #define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  90 #define EM2870_BOARD_COMPRO_VIDEOMATE             46
  91 #define EM2880_BOARD_KWORLD_DVB_305U              47
  92 #define EM2880_BOARD_KWORLD_DVB_310U              48
  93 #define EM2880_BOARD_MSI_DIGIVOX_AD               49
  94 #define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  95 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  96 #define EM2881_BOARD_DNT_DA2_HYBRID               52
  97 #define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  98 #define EM2882_BOARD_KWORLD_VS_DVBT               54
  99 #define EM2882_BOARD_TERRATEC_HYBRID_XS           55
 100 #define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E     56
 101 #define EM2883_BOARD_KWORLD_HYBRID_330U                  57
 102 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
 103 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 104 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 105 #define EM2820_BOARD_GADMEI_TVR200                62
 106 #define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 107 #define EM2860_BOARD_EASYCAP                      64
 108 #define EM2820_BOARD_IODATA_GVMVP_SZ              65
 109 #define EM2880_BOARD_EMPIRE_DUAL_TV               66
 110 #define EM2860_BOARD_TERRATEC_GRABBY              67
 111 #define EM2860_BOARD_TERRATEC_AV350               68
 112 #define EM2882_BOARD_KWORLD_ATSC_315U             69
 113 #define EM2882_BOARD_EVGA_INDTUBE                 70
 114 #define EM2820_BOARD_SILVERCREST_WEBCAM           71
 115 #define EM2861_BOARD_GADMEI_UTV330PLUS           72
 116 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX          73
 117 #define EM2800_BOARD_VC211A                       74
 118 #define EM2882_BOARD_DIKOM_DK300                  75
 119 #define EM2870_BOARD_KWORLD_A340                  76
 120 #define EM2874_BOARD_LEADERSHIP_ISDBT                     77
 121 #define EM28174_BOARD_PCTV_290E                   78
 122
 123
 124 /* Limits minimum and default number of buffers */
 125 #define EM28XX_MIN_BUF 4
 126 #define EM28XX_DEF_BUF 8
 127
 128 /*Limits the max URB message size */
 129 #define URB_MAX_CTRL_SIZE 80
 130
 131 /* Params for validated field */
 132 #define EM28XX_BOARD_NOT_VALIDATED 1
 133 #define EM28XX_BOARD_VALIDATED     0
 134
 135 /* Params for em28xx_cmd() audio */
 136 #define EM28XX_START_AUDIO      1
 137 #define EM28XX_STOP_AUDIO       0
 138
 139 /* maximum number of em28xx boards */
 140 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 141
 142 /* maximum number of frames that can be queued */
 143 #define EM28XX_NUM_FRAMES 5
 144 /* number of frames that get used for v4l2_read() */
 145 #define EM28XX_NUM_READ_FRAMES 2
 146
 147 /* number of buffers for isoc transfers */
 148 #define EM28XX_NUM_BUFS 5
 149
 150 /* number of packets for each buffer
 151    windows requests only 64 packets .. so we better do the same
 152    this is what I found out for all alternate numbers there!
 153  */
 154 #define EM28XX_NUM_PACKETS 64
 155
 156 #define EM28XX_INTERLACED_DEFAULT 1
 157
 158 /*
 159 #define (use usbview if you want to get the other alternate number infos)
 160 #define
 161 #define alternate number 2
 162 #define                         Endpoint Address: 82
 163                         Direction: in
 164                         Attribute: 1
 165                         Type: Isoc
 166                         Max Packet Size: 1448
 167                         Interval: 125us
 168
 169   alternate number 7
 170
 171                         Endpoint Address: 82
 172                         Direction: in
 173                         Attribute: 1
 174                         Type: Isoc
 175                         Max Packet Size: 3072
 176                         Interval: 125us
 177 */
 178
 179 /* time to wait when stopping the isoc transfer */
 180 #define EM28XX_URB_TIMEOUT \
 181                         msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 182
 183 /* time in msecs to wait for i2c writes to finish */
 184 #define EM2800_I2C_WRITE_TIMEOUT 20
 185
 186 enum em28xx_mode {
 187         EM28XX_SUSPEND,
 188         EM28XX_ANALOG_MODE,
 189         EM28XX_DIGITAL_MODE,
 190 };
 191
 192
 193 struct em28xx;
 194
 195 struct em28xx_usb_isoc_ctl {
 196                 /* max packet size of isoc transaction */
 197         int                             max_pkt_size;
 198
 199                 /* number of allocated urbs */
 200         int                             num_bufs;
 201
 202                 /* urb for isoc transfers */
 203         struct urb                      **urb;
 204
 205                 /* transfer buffers for isoc transfer */
 206         char                            **transfer_buffer;
 207
 208                 /* Last buffer command and region */
 209         u8                              cmd;
 210         int                             pos, size, pktsize;
 211
 212                 /* Last field: ODD or EVEN? */
 213         int                             field;
 214
 215                 /* Stores incomplete commands */
 216         u32                             tmp_buf;
 217         int                             tmp_buf_len;
 218
 219                 /* Stores already requested buffers */
 220         struct em28xx_buffer            *vid_buf;
 221         struct em28xx_buffer            *vbi_buf;
 222
 223                 /* Stores the number of received fields */
 224         int                             nfields;
 225
 226                 /* isoc urb callback */
 227         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 228
 229 };
 230
 231 /* Struct to enumberate video formats */
 232 struct em28xx_fmt {
 233         char  *name;
 234         u32   fourcc;          /* v4l2 format id */
 235         int   depth;
 236         int   reg;
 237 };
 238
 239 /* buffer for one video frame */
 240 struct em28xx_buffer {
 241         /* common v4l buffer stuff -- must be first */
 242         struct videobuf_buffer vb;
 243
 244         struct list_head frame;
 245         int top_field;
 246         int receiving;
 247 };
 248
 249 struct em28xx_dmaqueue {
 250         struct list_head       active;
 251         struct list_head       queued;
 252
 253         wait_queue_head_t          wq;
 254
 255         /* Counters to control buffer fill */
 256         int                        pos;
 257 };
 258
 259 /* io methods */
 260 enum em28xx_io_method {
 261         IO_NONE,
 262         IO_READ,
 263         IO_MMAP,
 264 };
 265
 266 /* inputs */
 267
 268 #define MAX_EM28XX_INPUT 4
 269 enum enum28xx_itype {
 270         EM28XX_VMUX_COMPOSITE1 = 1,
 271         EM28XX_VMUX_COMPOSITE2,
 272         EM28XX_VMUX_COMPOSITE3,
 273         EM28XX_VMUX_COMPOSITE4,
 274         EM28XX_VMUX_SVIDEO,
 275         EM28XX_VMUX_TELEVISION,
 276         EM28XX_VMUX_CABLE,
 277         EM28XX_VMUX_DVB,
 278         EM28XX_VMUX_DEBUG,
 279         EM28XX_RADIO,
 280 };
 281
 282 enum em28xx_ac97_mode {
 283         EM28XX_NO_AC97 = 0,
 284         EM28XX_AC97_EM202,
 285         EM28XX_AC97_SIGMATEL,
 286         EM28XX_AC97_OTHER,
 287 };
 288
 289 struct em28xx_audio_mode {
 290         enum em28xx_ac97_mode ac97;
 291
 292         u16 ac97_feat;
 293         u32 ac97_vendor_id;
 294
 295         unsigned int has_audio:1;
 296
 297         unsigned int i2s_3rates:1;
 298         unsigned int i2s_5rates:1;
 299 };
 300
 301 /* em28xx has two audio inputs: tuner and line in.
 302    However, on most devices, an auxiliary AC97 codec device is used.
 303    The AC97 device may have several different inputs and outputs,
 304    depending on their model. So, it is possible to use AC97 mixer to
 305    address more than two different entries.
 306  */
 307 enum em28xx_amux {
 308         /* This is the only entry for em28xx tuner input */
 309         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 310
 311         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 312
 313         /* Some less-common mixer setups */
 314         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 315         EM28XX_AMUX_PHONE,
 316         EM28XX_AMUX_MIC,
 317         EM28XX_AMUX_CD,
 318         EM28XX_AMUX_AUX,
 319         EM28XX_AMUX_PCM_OUT,
 320 };
 321
 322 enum em28xx_aout {
 323         /* AC97 outputs */
 324         EM28XX_AOUT_MASTER = 1 << 0,
 325         EM28XX_AOUT_LINE   = 1 << 1,
 326         EM28XX_AOUT_MONO   = 1 << 2,
 327         EM28XX_AOUT_LFE    = 1 << 3,
 328         EM28XX_AOUT_SURR   = 1 << 4,
 329
 330         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 331         EM28XX_AOUT_PCM_IN = 1 << 7,
 332
 333         /* Bits 10-8 are used to indicate the PCM IN record select */
 334         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 335         EM28XX_AOUT_PCM_CD      = 1 << 8,
 336         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 337         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 338         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 339         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 340         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 341         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 342 };
 343
 344 static inline int ac97_return_record_select(int a_out)
 345 {
 346         return (a_out & 0x700) >> 8;
 347 }
 348
 349 struct em28xx_reg_seq {
 350         int reg;
 351         unsigned char val, mask;
 352         int sleep;
 353 };
 354
 355 struct em28xx_input {
 356         enum enum28xx_itype type;
 357         unsigned int vmux;
 358         enum em28xx_amux amux;
 359         enum em28xx_aout aout;
 360         struct em28xx_reg_seq *gpio;
 361 };
 362
 363 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 364
 365 enum em28xx_decoder {
 366         EM28XX_NODECODER = 0,
 367         EM28XX_TVP5150,
 368         EM28XX_SAA711X,
 369 };
 370
 371 enum em28xx_sensor {
 372         EM28XX_NOSENSOR = 0,
 373         EM28XX_MT9V011,
 374         EM28XX_MT9M001,
 375         EM28XX_MT9M111,
 376 };
 377
 378 enum em28xx_adecoder {
 379         EM28XX_NOADECODER = 0,
 380         EM28XX_TVAUDIO,
 381 };
 382
 383 struct em28xx_board {
 384         char *name;
 385         int vchannels;
 386         int tuner_type;
 387         int tuner_addr;
 388
 389         /* i2c flags */
 390         unsigned int tda9887_conf;
 391
 392         /* GPIO sequences */
 393         struct em28xx_reg_seq *dvb_gpio;
 394         struct em28xx_reg_seq *suspend_gpio;
 395         struct em28xx_reg_seq *tuner_gpio;
 396         struct em28xx_reg_seq *mute_gpio;
 397
 398         unsigned int is_em2800:1;
 399         unsigned int has_msp34xx:1;
 400         unsigned int mts_firmware:1;
 401         unsigned int max_range_640_480:1;
 402         unsigned int has_dvb:1;
 403         unsigned int has_snapshot_button:1;
 404         unsigned int is_webcam:1;
 405         unsigned int valid:1;
 406         unsigned int has_ir_i2c:1;
 407
 408         unsigned char xclk, i2c_speed;
 409         unsigned char radio_addr;
 410         unsigned short tvaudio_addr;
 411
 412         enum em28xx_decoder decoder;
 413         enum em28xx_adecoder adecoder;
 414
 415         struct em28xx_input       input[MAX_EM28XX_INPUT];
 416         struct em28xx_input       radio;
 417         char                      *ir_codes;
 418 };
 419
 420 struct em28xx_eeprom {
 421         u32 id;                 /* 0x9567eb1a */
 422         u16 vendor_ID;
 423         u16 product_ID;
 424
 425         u16 chip_conf;
 426
 427         u16 board_conf;
 428
 429         u16 string1, string2, string3;
 430
 431         u8 string_idx_table;
 432 };
 433
 434 /* device states */
 435 enum em28xx_dev_state {
 436         DEV_INITIALIZED = 0x01,
 437         DEV_DISCONNECTED = 0x02,
 438         DEV_MISCONFIGURED = 0x04,
 439 };
 440
 441 #define EM28XX_AUDIO_BUFS 5
 442 #define EM28XX_NUM_AUDIO_PACKETS 64
 443 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 444 #define EM28XX_CAPTURE_STREAM_EN 1
 445
 446 /* em28xx extensions */
 447 #define EM28XX_AUDIO   0x10
 448 #define EM28XX_DVB     0x20
 449
 450 /* em28xx resource types (used for res_get/res_lock etc */
 451 #define EM28XX_RESOURCE_VIDEO 0x01
 452 #define EM28XX_RESOURCE_VBI   0x02
 453
 454 struct em28xx_audio {
 455         char name[50];
 456         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 457         struct urb *urb[EM28XX_AUDIO_BUFS];
 458         struct usb_device *udev;
 459         unsigned int capture_transfer_done;
 460         struct snd_pcm_substream   *capture_pcm_substream;
 461
 462         unsigned int hwptr_done_capture;
 463         struct snd_card            *sndcard;
 464
 465         int users;
 466         spinlock_t slock;
 467 };
 468
 469 struct em28xx;
 470
 471 struct em28xx_fh {
 472         struct em28xx *dev;
 473         int           radio;
 474         unsigned int  resources;
 475
 476         struct videobuf_queue        vb_vidq;
 477         struct videobuf_queue        vb_vbiq;
 478
 479         enum v4l2_buf_type           type;
 480 };
 481
 482 /* main device struct */
 483 struct em28xx {
 484         /* generic device properties */
 485         char name[30];          /* name (including minor) of the device */
 486         int model;              /* index in the device_data struct */
 487         int devno;              /* marks the number of this device */
 488         enum em28xx_chip_id chip_id;
 489
 490         struct v4l2_device v4l2_dev;
 491         struct em28xx_board board;
 492
 493         /* Webcam specific fields */
 494         enum em28xx_sensor em28xx_sensor;
 495         int sensor_xres, sensor_yres;
 496         int sensor_xtal;
 497
 498         /* Allows progressive (e. g. non-interlaced) mode */
 499         int progressive;
 500
 501         /* Vinmode/Vinctl used at the driver */
 502         int vinmode, vinctl;
 503
 504         unsigned int has_audio_class:1;
 505         unsigned int has_alsa_audio:1;
 506
 507         /* Controls audio streaming */
 508         struct work_struct wq_trigger;              /* Trigger to start/stop audio for alsa module */
 509          atomic_t       stream_started;      /* stream should be running if true */
 510
 511         struct em28xx_fmt *format;
 512
 513         struct em28xx_IR *ir;
 514
 515         /* Some older em28xx chips needs a waiting time after writing */
 516         unsigned int wait_after_write;
 517
 518         struct list_head        devlist;
 519
 520         u32 i2s_speed;          /* I2S speed for audio digital stream */
 521
 522         struct em28xx_audio_mode audio_mode;
 523
 524         int tuner_type;         /* type of the tuner */
 525         int tuner_addr;         /* tuner address */
 526         int tda9887_conf;
 527         /* i2c i/o */
 528         struct i2c_adapter i2c_adap;
 529         struct i2c_client i2c_client;
 530         /* video for linux */
 531         int users;              /* user count for exclusive use */
 532         struct video_device *vdev;      /* video for linux device struct */
 533         v4l2_std_id norm;       /* selected tv norm */
 534         int ctl_freq;           /* selected frequency */
 535         unsigned int ctl_input; /* selected input */
 536         unsigned int ctl_ainput;/* selected audio input */
 537         unsigned int ctl_aoutput;/* selected audio output */
 538         int mute;
 539         int volume;
 540         /* frame properties */
 541         int width;              /* current frame width */
 542         int height;             /* current frame height */
 543         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 544         unsigned vscale;        /* vertical scale factor (see datasheet) */
 545         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 546         unsigned int video_bytesread;   /* Number of bytes read */
 547
 548         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 549         unsigned long i2c_hash; /* i2c devicelist hash -
 550                                    for boards with generic ID */
 551
 552         struct em28xx_audio adev;
 553
 554         /* states */
 555         enum em28xx_dev_state state;
 556         enum em28xx_io_method io;
 557
 558         /* vbi related state tracking */
 559         int capture_type;
 560         int vbi_read;
 561         unsigned char cur_field;
 562         unsigned int vbi_width;
 563         unsigned int vbi_height; /* lines per field */
 564
 565         struct work_struct         request_module_wk;
 566
 567         /* locks */
 568         struct mutex lock;
 569         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 570         /* spinlock_t queue_lock; */
 571         struct list_head inqueue, outqueue;
 572         wait_queue_head_t open, wait_frame, wait_stream;
 573         struct video_device *vbi_dev;
 574         struct video_device *radio_dev;
 575
 576         /* resources in use */
 577         unsigned int resources;
 578
 579         unsigned char eedata[256];
 580
 581         /* Isoc control struct */
 582         struct em28xx_dmaqueue vidq;
 583         struct em28xx_dmaqueue vbiq;
 584         struct em28xx_usb_isoc_ctl isoc_ctl;
 585         spinlock_t slock;
 586
 587         /* usb transfer */
 588         struct usb_device *udev;        /* the usb device */
 589         int alt;                /* alternate */
 590         int max_pkt_size;       /* max packet size of isoc transaction */
 591         int num_alt;            /* Number of alternative settings */
 592         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 593         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 594         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
 595                                                    transfer */
 596         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 597
 598         /* helper funcs that call usb_control_msg */
 599         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 600                                         char *buf, int len);
 601         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 602         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 603                                         char *buf, int len);
 604         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 605                                       char *buf, int len);
 606         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 607
 608         enum em28xx_mode mode;
 609
 610         /* register numbers for GPO/GPIO registers */
 611         u16 reg_gpo_num, reg_gpio_num;
 612
 613         /* Caches GPO and GPIO registers */
 614         unsigned char   reg_gpo, reg_gpio;
 615
 616         /* Snapshot button */
 617         char snapshot_button_path[30];  /* path of the input dev */
 618         struct input_dev *sbutton_input_dev;
 619         struct delayed_work sbutton_query_work;
 620
 621         struct em28xx_dvb *dvb;
 622
 623         /* I2C keyboard data */
 624         struct IR_i2c_init_data init_data;
 625 };
 626
 627 struct em28xx_ops {
 628         struct list_head next;
 629         char *name;
 630         int id;
 631         int (*init)(struct em28xx *);
 632         int (*fini)(struct em28xx *);
 633 };
 634
 635 /* Provided by em28xx-i2c.c */
 636 void em28xx_do_i2c_scan(struct em28xx *dev);
 637 int  em28xx_i2c_register(struct em28xx *dev);
 638 int  em28xx_i2c_unregister(struct em28xx *dev);
 639
 640 /* Provided by em28xx-core.c */
 641
 642 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 643 void em28xx_queue_unusedframes(struct em28xx *dev);
 644 void em28xx_release_buffers(struct em28xx *dev);
 645
 646 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 647                             char *buf, int len);
 648 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 649 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 650 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 651                           int len);
 652 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 653 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 654 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 655                                  u8 bitmask);
 656
 657 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 658 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 659
 660 int em28xx_audio_analog_set(struct em28xx *dev);
 661 int em28xx_audio_setup(struct em28xx *dev);
 662
 663 int em28xx_colorlevels_set_default(struct em28xx *dev);
 664 int em28xx_capture_start(struct em28xx *dev, int start);
 665 int em28xx_vbi_supported(struct em28xx *dev);
 666 int em28xx_set_outfmt(struct em28xx *dev);
 667 int em28xx_resolution_set(struct em28xx *dev);
 668 int em28xx_set_alternate(struct em28xx *dev);
 669 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 670                      int num_bufs, int max_pkt_size,
 671                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 672 void em28xx_uninit_isoc(struct em28xx *dev);
 673 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 674 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 675 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 676 void em28xx_wake_i2c(struct em28xx *dev);
 677 void em28xx_remove_from_devlist(struct em28xx *dev);
 678 void em28xx_add_into_devlist(struct em28xx *dev);
 679 int em28xx_register_extension(struct em28xx_ops *dev);
 680 void em28xx_unregister_extension(struct em28xx_ops *dev);
 681 void em28xx_init_extension(struct em28xx *dev);
 682 void em28xx_close_extension(struct em28xx *dev);
 683
 684 /* Provided by em28xx-video.c */
 685 int em28xx_register_analog_devices(struct em28xx *dev);
 686 void em28xx_release_analog_resources(struct em28xx *dev);
 687
 688 /* Provided by em28xx-cards.c */
 689 extern int em2800_variant_detect(struct usb_device *udev, int model);
 690 extern void em28xx_pre_card_setup(struct em28xx *dev);
 691 extern void em28xx_card_setup(struct em28xx *dev);
 692 extern struct em28xx_board em28xx_boards[];
 693 extern struct usb_device_id em28xx_id_table[];
 694 extern const unsigned int em28xx_bcount;
 695 void em28xx_register_i2c_ir(struct em28xx *dev);
 696 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 697 void em28xx_release_resources(struct em28xx *dev);
 698
 699 /* Provided by em28xx-input.c */
 700
 701 #ifdef CONFIG_VIDEO_EM28XX_RC
 702
 703 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 704 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 705 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 706                                      u32 *ir_raw);
 707 int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key,
 708                                      u32 *ir_raw);
 709 void em28xx_register_snapshot_button(struct em28xx *dev);
 710 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 711
 712 int em28xx_ir_init(struct em28xx *dev);
 713 int em28xx_ir_fini(struct em28xx *dev);
 714
 715 #else
 716
 717 #define em28xx_get_key_terratec                 NULL
 718 #define em28xx_get_key_em_haup                  NULL
 719 #define em28xx_get_key_pinnacle_usb_grey        NULL
 720 #define em28xx_get_key_winfast_usbii_deluxe     NULL
 721
 722 static inline void em28xx_register_snapshot_button(struct em28xx *dev) {}
 723 static inline void em28xx_deregister_snapshot_button(struct em28xx *dev) {}
 724 static inline int em28xx_ir_init(struct em28xx *dev) { return 0; }
 725 static inline int em28xx_ir_fini(struct em28xx *dev) { return 0; }
 726
 727 #endif
 728
 729 /* Provided by em28xx-vbi.c */
 730 extern struct videobuf_queue_ops em28xx_vbi_qops;
 731
 732 /* printk macros */
 733
 734 #define em28xx_err(fmt, arg...) do {\
 735         printk(KERN_ERR fmt , ##arg); } while (0)
 736
 737 #define em28xx_errdev(fmt, arg...) do {\
 738         printk(KERN_ERR "%s: "fmt,\
 739                         dev->name , ##arg); } while (0)
 740
 741 #define em28xx_info(fmt, arg...) do {\
 742         printk(KERN_INFO "%s: "fmt,\
 743                         dev->name , ##arg); } while (0)
 744 #define em28xx_warn(fmt, arg...) do {\
 745         printk(KERN_WARNING "%s: "fmt,\
 746                         dev->name , ##arg); } while (0)
 747
 748 static inline int em28xx_compression_disable(struct em28xx *dev)
 749 {
 750         /* side effect of disabling scaler and mixer */
 751         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 752 }
 753
 754 static inline int em28xx_contrast_get(struct em28xx *dev)
 755 {
 756         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 757 }
 758
 759 static inline int em28xx_brightness_get(struct em28xx *dev)
 760 {
 761         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 762 }
 763
 764 static inline int em28xx_saturation_get(struct em28xx *dev)
 765 {
 766         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 767 }
 768
 769 static inline int em28xx_u_balance_get(struct em28xx *dev)
 770 {
 771         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 772 }
 773
 774 static inline int em28xx_v_balance_get(struct em28xx *dev)
 775 {
 776         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 777 }
 778
 779 static inline int em28xx_gamma_get(struct em28xx *dev)
 780 {
 781         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 782 }
 783
 784 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 785 {
 786         u8 tmp = (u8) val;
 787         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 788 }
 789
 790 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 791 {
 792         u8 tmp = (u8) val;
 793         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 794 }
 795
 796 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 797 {
 798         u8 tmp = (u8) val;
 799         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 800 }
 801
 802 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 803 {
 804         u8 tmp = (u8) val;
 805         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 806 }
 807
 808 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 809 {
 810         u8 tmp = (u8) val;
 811         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 812 }
 813
 814 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 815 {
 816         u8 tmp = (u8) val;
 817         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 818 }
 819
 820 /*FIXME: maxw should be dependent of alt mode */
 821 static inline unsigned int norm_maxw(struct em28xx *dev)
 822 {
 823         if (dev->board.is_webcam)
 824                 return dev->sensor_xres;
 825
 826         if (dev->board.max_range_640_480 || dev->board.is_em2800)
 827                 return 640;
 828
 829         return 720;
 830 }
 831
 832 static inline unsigned int norm_maxh(struct em28xx *dev)
 833 {
 834         if (dev->board.is_webcam)
 835                 return dev->sensor_yres;
 836
 837         if (dev->board.max_range_640_480)
 838                 return 480;
 839
 840         return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 841 }
 842 #endif