drivers/media/usb/em28xx/em28xx.h

   1 /*
   2    em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
   3
   4    Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
   5                       Ludovico Cavedon <cavedon@sssup.it>
   6                       Mauro Carvalho Chehab <mchehab@infradead.org>
   7
   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 "xc5000.h"
  42 #include "em28xx-reg.h"
  43
  44 /* Boards supported by driver */
  45 #define EM2800_BOARD_UNKNOWN                    0
  46 #define EM2820_BOARD_UNKNOWN                    1
  47 #define EM2820_BOARD_TERRATEC_CINERGY_250       2
  48 #define EM2820_BOARD_PINNACLE_USB_2             3
  49 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
  50 #define EM2820_BOARD_MSI_VOX_USB_2              5
  51 #define EM2800_BOARD_TERRATEC_CINERGY_200       6
  52 #define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
  53 #define EM2800_BOARD_KWORLD_USB2800             8
  54 #define EM2820_BOARD_PINNACLE_DVC_90            9
  55 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900    10
  56 #define EM2880_BOARD_TERRATEC_HYBRID_XS         11
  57 #define EM2820_BOARD_KWORLD_PVRTV2800RF         12
  58 #define EM2880_BOARD_TERRATEC_PRODIGY_XS        13
  59 #define EM2820_BOARD_PROLINK_PLAYTV_USB2        14
  60 #define EM2800_BOARD_VGEAR_POCKETTV             15
  61 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  62 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO       17
  63 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
  64 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN   19
  65 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
  66 #define EM2800_BOARD_GRABBEEX_USB2800           21
  67 #define EM2750_BOARD_UNKNOWN                      22
  68 #define EM2750_BOARD_DLCW_130                     23
  69 #define EM2820_BOARD_DLINK_USB_TV                 24
  70 #define EM2820_BOARD_GADMEI_UTV310                25
  71 #define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  72 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  73 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  74 #define EM2860_BOARD_TVP5150_REFERENCE_DESIGN     29
  75 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  76 #define EM2821_BOARD_USBGEAR_VD204                31
  77 #define EM2821_BOARD_SUPERCOMP_USB_2              32
  78 #define EM2860_BOARD_ELGATO_VIDEO_CAPTURE         33
  79 #define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  80 #define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  81 #define EM2860_BOARD_NETGMBH_CAM                  36
  82 #define EM2860_BOARD_GADMEI_UTV330                37
  83 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  84 #define EM2861_BOARD_KWORLD_PVRTV_300U            39
  85 #define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  86 #define EM2870_BOARD_KWORLD_350U                  41
  87 #define EM2870_BOARD_KWORLD_355U                  42
  88 #define EM2870_BOARD_TERRATEC_XS                  43
  89 #define EM2870_BOARD_TERRATEC_XS_MT2060           44
  90 #define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  91 #define EM2870_BOARD_COMPRO_VIDEOMATE             46
  92 #define EM2880_BOARD_KWORLD_DVB_305U              47
  93 #define EM2880_BOARD_KWORLD_DVB_310U              48
  94 #define EM2880_BOARD_MSI_DIGIVOX_AD               49
  95 #define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  96 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  97 #define EM2881_BOARD_DNT_DA2_HYBRID               52
  98 #define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  99 #define EM2882_BOARD_KWORLD_VS_DVBT               54
 100 #define EM2882_BOARD_TERRATEC_HYBRID_XS           55
 101 #define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E     56
 102 #define EM2883_BOARD_KWORLD_HYBRID_330U                  57
 103 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
 104 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 105 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 106 #define EM2820_BOARD_GADMEI_TVR200                62
 107 #define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 108 #define EM2860_BOARD_EASYCAP                      64
 109 #define EM2820_BOARD_IODATA_GVMVP_SZ              65
 110 #define EM2880_BOARD_EMPIRE_DUAL_TV               66
 111 #define EM2860_BOARD_TERRATEC_GRABBY              67
 112 #define EM2860_BOARD_TERRATEC_AV350               68
 113 #define EM2882_BOARD_KWORLD_ATSC_315U             69
 114 #define EM2882_BOARD_EVGA_INDTUBE                 70
 115 #define EM2820_BOARD_SILVERCREST_WEBCAM           71
 116 #define EM2861_BOARD_GADMEI_UTV330PLUS           72
 117 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX          73
 118 #define EM2800_BOARD_VC211A                       74
 119 #define EM2882_BOARD_DIKOM_DK300                  75
 120 #define EM2870_BOARD_KWORLD_A340                  76
 121 #define EM2874_BOARD_LEADERSHIP_ISDBT             77
 122 #define EM28174_BOARD_PCTV_290E                   78
 123 #define EM2884_BOARD_TERRATEC_H5                  79
 124 #define EM28174_BOARD_PCTV_460E                   80
 125 #define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C     81
 126 #define EM2884_BOARD_CINERGY_HTC_STICK            82
 127 #define EM2860_BOARD_HT_VIDBOX_NW03               83
 128 #define EM2874_BOARD_MAXMEDIA_UB425_TC            84
 129 #define EM2884_BOARD_PCTV_510E                    85
 130 #define EM2884_BOARD_PCTV_520E                    86
 131
 132 /* Limits minimum and default number of buffers */
 133 #define EM28XX_MIN_BUF 4
 134 #define EM28XX_DEF_BUF 8
 135
 136 /*Limits the max URB message size */
 137 #define URB_MAX_CTRL_SIZE 80
 138
 139 /* Params for validated field */
 140 #define EM28XX_BOARD_NOT_VALIDATED 1
 141 #define EM28XX_BOARD_VALIDATED     0
 142
 143 /* Params for em28xx_cmd() audio */
 144 #define EM28XX_START_AUDIO      1
 145 #define EM28XX_STOP_AUDIO       0
 146
 147 /* maximum number of em28xx boards */
 148 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 149
 150 /* maximum number of frames that can be queued */
 151 #define EM28XX_NUM_FRAMES 5
 152 /* number of frames that get used for v4l2_read() */
 153 #define EM28XX_NUM_READ_FRAMES 2
 154
 155 /* number of buffers for isoc transfers */
 156 #define EM28XX_NUM_BUFS 5
 157 #define EM28XX_DVB_NUM_BUFS 5
 158
 159 /* number of packets for each buffer
 160    windows requests only 64 packets .. so we better do the same
 161    this is what I found out for all alternate numbers there!
 162  */
 163 #define EM28XX_NUM_PACKETS 64
 164 #define EM28XX_DVB_MAX_PACKETS 64
 165
 166 #define EM28XX_INTERLACED_DEFAULT 1
 167
 168 /*
 169 #define (use usbview if you want to get the other alternate number infos)
 170 #define
 171 #define alternate number 2
 172 #define                         Endpoint Address: 82
 173                         Direction: in
 174                         Attribute: 1
 175                         Type: Isoc
 176                         Max Packet Size: 1448
 177                         Interval: 125us
 178
 179   alternate number 7
 180
 181                         Endpoint Address: 82
 182                         Direction: in
 183                         Attribute: 1
 184                         Type: Isoc
 185                         Max Packet Size: 3072
 186                         Interval: 125us
 187 */
 188
 189 /* time to wait when stopping the isoc transfer */
 190 #define EM28XX_URB_TIMEOUT \
 191                         msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 192
 193 /* time in msecs to wait for i2c writes to finish */
 194 #define EM2800_I2C_WRITE_TIMEOUT 20
 195
 196 enum em28xx_mode {
 197         EM28XX_SUSPEND,
 198         EM28XX_ANALOG_MODE,
 199         EM28XX_DIGITAL_MODE,
 200 };
 201
 202
 203 struct em28xx;
 204
 205 struct em28xx_usb_isoc_bufs {
 206                 /* max packet size of isoc transaction */
 207         int                             max_pkt_size;
 208
 209                 /* number of packets in each buffer */
 210         int                             num_packets;
 211
 212                 /* number of allocated urbs */
 213         int                             num_bufs;
 214
 215                 /* urb for isoc transfers */
 216         struct urb                      **urb;
 217
 218                 /* transfer buffers for isoc transfer */
 219         char                            **transfer_buffer;
 220 };
 221
 222 struct em28xx_usb_isoc_ctl {
 223                 /* isoc transfer buffers for analog mode */
 224         struct em28xx_usb_isoc_bufs     analog_bufs;
 225
 226                 /* isoc transfer buffers for digital mode */
 227         struct em28xx_usb_isoc_bufs     digital_bufs;
 228
 229                 /* Stores already requested buffers */
 230         struct em28xx_buffer            *vid_buf;
 231         struct em28xx_buffer            *vbi_buf;
 232
 233                 /* isoc urb callback */
 234         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 235
 236 };
 237
 238 /* Struct to enumberate video formats */
 239 struct em28xx_fmt {
 240         char  *name;
 241         u32   fourcc;          /* v4l2 format id */
 242         int   depth;
 243         int   reg;
 244 };
 245
 246 /* buffer for one video frame */
 247 struct em28xx_buffer {
 248         /* common v4l buffer stuff -- must be first */
 249         struct videobuf_buffer vb;
 250
 251         struct list_head frame;
 252         int top_field;
 253 };
 254
 255 struct em28xx_dmaqueue {
 256         struct list_head       active;
 257
 258         wait_queue_head_t          wq;
 259
 260         /* Counters to control buffer fill */
 261         int                        pos;
 262 };
 263
 264 /* inputs */
 265
 266 #define MAX_EM28XX_INPUT 4
 267 enum enum28xx_itype {
 268         EM28XX_VMUX_COMPOSITE1 = 1,
 269         EM28XX_VMUX_COMPOSITE2,
 270         EM28XX_VMUX_COMPOSITE3,
 271         EM28XX_VMUX_COMPOSITE4,
 272         EM28XX_VMUX_SVIDEO,
 273         EM28XX_VMUX_TELEVISION,
 274         EM28XX_VMUX_CABLE,
 275         EM28XX_VMUX_DVB,
 276         EM28XX_VMUX_DEBUG,
 277         EM28XX_RADIO,
 278 };
 279
 280 enum em28xx_ac97_mode {
 281         EM28XX_NO_AC97 = 0,
 282         EM28XX_AC97_EM202,
 283         EM28XX_AC97_SIGMATEL,
 284         EM28XX_AC97_OTHER,
 285 };
 286
 287 struct em28xx_audio_mode {
 288         enum em28xx_ac97_mode ac97;
 289
 290         u16 ac97_feat;
 291         u32 ac97_vendor_id;
 292
 293         unsigned int has_audio:1;
 294
 295         unsigned int i2s_3rates:1;
 296         unsigned int i2s_5rates:1;
 297 };
 298
 299 /* em28xx has two audio inputs: tuner and line in.
 300    However, on most devices, an auxiliary AC97 codec device is used.
 301    The AC97 device may have several different inputs and outputs,
 302    depending on their model. So, it is possible to use AC97 mixer to
 303    address more than two different entries.
 304  */
 305 enum em28xx_amux {
 306         /* This is the only entry for em28xx tuner input */
 307         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 308
 309         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 310
 311         /* Some less-common mixer setups */
 312         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 313         EM28XX_AMUX_PHONE,
 314         EM28XX_AMUX_MIC,
 315         EM28XX_AMUX_CD,
 316         EM28XX_AMUX_AUX,
 317         EM28XX_AMUX_PCM_OUT,
 318 };
 319
 320 enum em28xx_aout {
 321         /* AC97 outputs */
 322         EM28XX_AOUT_MASTER = 1 << 0,
 323         EM28XX_AOUT_LINE   = 1 << 1,
 324         EM28XX_AOUT_MONO   = 1 << 2,
 325         EM28XX_AOUT_LFE    = 1 << 3,
 326         EM28XX_AOUT_SURR   = 1 << 4,
 327
 328         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 329         EM28XX_AOUT_PCM_IN = 1 << 7,
 330
 331         /* Bits 10-8 are used to indicate the PCM IN record select */
 332         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 333         EM28XX_AOUT_PCM_CD      = 1 << 8,
 334         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 335         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 336         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 337         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 338         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 339         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 340 };
 341
 342 static inline int ac97_return_record_select(int a_out)
 343 {
 344         return (a_out & 0x700) >> 8;
 345 }
 346
 347 struct em28xx_reg_seq {
 348         int reg;
 349         unsigned char val, mask;
 350         int sleep;
 351 };
 352
 353 struct em28xx_input {
 354         enum enum28xx_itype type;
 355         unsigned int vmux;
 356         enum em28xx_amux amux;
 357         enum em28xx_aout aout;
 358         struct em28xx_reg_seq *gpio;
 359 };
 360
 361 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 362
 363 enum em28xx_decoder {
 364         EM28XX_NODECODER = 0,
 365         EM28XX_TVP5150,
 366         EM28XX_SAA711X,
 367 };
 368
 369 enum em28xx_sensor {
 370         EM28XX_NOSENSOR = 0,
 371         EM28XX_MT9V011,
 372         EM28XX_MT9M001,
 373         EM28XX_MT9M111,
 374 };
 375
 376 enum em28xx_adecoder {
 377         EM28XX_NOADECODER = 0,
 378         EM28XX_TVAUDIO,
 379 };
 380
 381 struct em28xx_board {
 382         char *name;
 383         int vchannels;
 384         int tuner_type;
 385         int tuner_addr;
 386
 387         /* i2c flags */
 388         unsigned int tda9887_conf;
 389
 390         /* GPIO sequences */
 391         struct em28xx_reg_seq *dvb_gpio;
 392         struct em28xx_reg_seq *suspend_gpio;
 393         struct em28xx_reg_seq *tuner_gpio;
 394         struct em28xx_reg_seq *mute_gpio;
 395
 396         unsigned int is_em2800:1;
 397         unsigned int has_msp34xx:1;
 398         unsigned int mts_firmware:1;
 399         unsigned int max_range_640_480:1;
 400         unsigned int has_dvb:1;
 401         unsigned int has_snapshot_button:1;
 402         unsigned int is_webcam:1;
 403         unsigned int valid:1;
 404         unsigned int has_ir_i2c:1;
 405
 406         unsigned char xclk, i2c_speed;
 407         unsigned char radio_addr;
 408         unsigned short tvaudio_addr;
 409
 410         enum em28xx_decoder decoder;
 411         enum em28xx_adecoder adecoder;
 412
 413         struct em28xx_input       input[MAX_EM28XX_INPUT];
 414         struct em28xx_input       radio;
 415         char                      *ir_codes;
 416 };
 417
 418 struct em28xx_eeprom {
 419         u32 id;                 /* 0x9567eb1a */
 420         u16 vendor_ID;
 421         u16 product_ID;
 422
 423         u16 chip_conf;
 424
 425         u16 board_conf;
 426
 427         u16 string1, string2, string3;
 428
 429         u8 string_idx_table;
 430 };
 431
 432 /* device states */
 433 enum em28xx_dev_state {
 434         DEV_INITIALIZED = 0x01,
 435         DEV_DISCONNECTED = 0x02,
 436         DEV_MISCONFIGURED = 0x04,
 437 };
 438
 439 #define EM28XX_AUDIO_BUFS 5
 440 #define EM28XX_NUM_AUDIO_PACKETS 64
 441 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 442 #define EM28XX_CAPTURE_STREAM_EN 1
 443
 444 /* em28xx extensions */
 445 #define EM28XX_AUDIO   0x10
 446 #define EM28XX_DVB     0x20
 447 #define EM28XX_RC      0x30
 448
 449 /* em28xx resource types (used for res_get/res_lock etc */
 450 #define EM28XX_RESOURCE_VIDEO 0x01
 451 #define EM28XX_RESOURCE_VBI   0x02
 452
 453 struct em28xx_audio {
 454         char name[50];
 455         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 456         struct urb *urb[EM28XX_AUDIO_BUFS];
 457         struct usb_device *udev;
 458         unsigned int capture_transfer_done;
 459         struct snd_pcm_substream   *capture_pcm_substream;
 460
 461         unsigned int hwptr_done_capture;
 462         struct snd_card            *sndcard;
 463
 464         int users;
 465         spinlock_t slock;
 466 };
 467
 468 struct em28xx;
 469
 470 struct em28xx_fh {
 471         struct em28xx *dev;
 472         int           radio;
 473         unsigned int  resources;
 474
 475         struct videobuf_queue        vb_vidq;
 476         struct videobuf_queue        vb_vbiq;
 477
 478         enum v4l2_buf_type           type;
 479 };
 480
 481 /* main device struct */
 482 struct em28xx {
 483         /* generic device properties */
 484         char name[30];          /* name (including minor) of the device */
 485         int model;              /* index in the device_data struct */
 486         int devno;              /* marks the number of this device */
 487         enum em28xx_chip_id chip_id;
 488
 489         int audio_ifnum;
 490
 491         struct v4l2_device v4l2_dev;
 492         struct em28xx_board board;
 493
 494         /* Webcam specific fields */
 495         enum em28xx_sensor em28xx_sensor;
 496         int sensor_xres, sensor_yres;
 497         int sensor_xtal;
 498
 499         /* Allows progressive (e. g. non-interlaced) mode */
 500         int progressive;
 501
 502         /* Vinmode/Vinctl used at the driver */
 503         int vinmode, vinctl;
 504
 505         unsigned int has_audio_class:1;
 506         unsigned int has_alsa_audio:1;
 507         unsigned int is_audio_only:1;
 508
 509         /* Controls audio streaming */
 510         struct work_struct wq_trigger;              /* Trigger to start/stop audio for alsa module */
 511          atomic_t       stream_started;      /* stream should be running if true */
 512
 513         struct em28xx_fmt *format;
 514
 515         struct em28xx_IR *ir;
 516
 517         /* Some older em28xx chips needs a waiting time after writing */
 518         unsigned int wait_after_write;
 519
 520         struct list_head        devlist;
 521
 522         u32 i2s_speed;          /* I2S speed for audio digital stream */
 523
 524         struct em28xx_audio_mode audio_mode;
 525
 526         int tuner_type;         /* type of the tuner */
 527         int tuner_addr;         /* tuner address */
 528         int tda9887_conf;
 529         /* i2c i/o */
 530         struct i2c_adapter i2c_adap;
 531         struct i2c_client i2c_client;
 532         /* video for linux */
 533         int users;              /* user count for exclusive use */
 534         struct video_device *vdev;      /* video for linux device struct */
 535         v4l2_std_id norm;       /* selected tv norm */
 536         int ctl_freq;           /* selected frequency */
 537         unsigned int ctl_input; /* selected input */
 538         unsigned int ctl_ainput;/* selected audio input */
 539         unsigned int ctl_aoutput;/* selected audio output */
 540         int mute;
 541         int volume;
 542         /* frame properties */
 543         int width;              /* current frame width */
 544         int height;             /* current frame height */
 545         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 546         unsigned vscale;        /* vertical scale factor (see datasheet) */
 547         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 548         unsigned int video_bytesread;   /* Number of bytes read */
 549
 550         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 551         unsigned long i2c_hash; /* i2c devicelist hash -
 552                                    for boards with generic ID */
 553
 554         struct em28xx_audio adev;
 555
 556         /* states */
 557         enum em28xx_dev_state state;
 558
 559         /* vbi related state tracking */
 560         int capture_type;
 561         int vbi_read;
 562         unsigned char cur_field;
 563         unsigned int vbi_width;
 564         unsigned int vbi_height; /* lines per field */
 565
 566         struct work_struct         request_module_wk;
 567
 568         /* locks */
 569         struct mutex lock;
 570         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 571         /* spinlock_t queue_lock; */
 572         struct list_head inqueue, outqueue;
 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         int dvb_alt;                            /* alternate for DVB */
 594         unsigned int dvb_max_pkt_size;          /* wMaxPacketSize for DVB */
 595         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 596
 597         /* helper funcs that call usb_control_msg */
 598         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 599                                         char *buf, int len);
 600         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 601         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 602                                         char *buf, int len);
 603         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 604                                       char *buf, int len);
 605         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 606
 607         enum em28xx_mode mode;
 608
 609         /* register numbers for GPO/GPIO registers */
 610         u16 reg_gpo_num, reg_gpio_num;
 611
 612         /* Caches GPO and GPIO registers */
 613         unsigned char   reg_gpo, reg_gpio;
 614
 615         /* Snapshot button */
 616         char snapshot_button_path[30];  /* path of the input dev */
 617         struct input_dev *sbutton_input_dev;
 618         struct delayed_work sbutton_query_work;
 619
 620         struct em28xx_dvb *dvb;
 621
 622         /* I2C keyboard data */
 623         struct IR_i2c_init_data init_data;
 624 };
 625
 626 struct em28xx_ops {
 627         struct list_head next;
 628         char *name;
 629         int id;
 630         int (*init)(struct em28xx *);
 631         int (*fini)(struct em28xx *);
 632 };
 633
 634 /* Provided by em28xx-i2c.c */
 635 void em28xx_do_i2c_scan(struct em28xx *dev);
 636 int  em28xx_i2c_register(struct em28xx *dev);
 637 int  em28xx_i2c_unregister(struct em28xx *dev);
 638
 639 /* Provided by em28xx-core.c */
 640
 641 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 642 void em28xx_queue_unusedframes(struct em28xx *dev);
 643 void em28xx_release_buffers(struct em28xx *dev);
 644
 645 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 646                             char *buf, int len);
 647 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 648 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 649 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 650                           int len);
 651 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 652 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 653 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 654                                  u8 bitmask);
 655
 656 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 657 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 658
 659 int em28xx_audio_analog_set(struct em28xx *dev);
 660 int em28xx_audio_setup(struct em28xx *dev);
 661
 662 int em28xx_colorlevels_set_default(struct em28xx *dev);
 663 int em28xx_capture_start(struct em28xx *dev, int start);
 664 int em28xx_vbi_supported(struct em28xx *dev);
 665 int em28xx_set_outfmt(struct em28xx *dev);
 666 int em28xx_resolution_set(struct em28xx *dev);
 667 int em28xx_set_alternate(struct em28xx *dev);
 668 int em28xx_alloc_isoc(struct em28xx *dev, enum em28xx_mode mode,
 669                       int max_packets, int num_bufs, int max_pkt_size);
 670 int em28xx_init_isoc(struct em28xx *dev, enum em28xx_mode mode,
 671                      int max_packets, int num_bufs, int max_pkt_size,
 672                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 673 void em28xx_uninit_isoc(struct em28xx *dev, enum em28xx_mode mode);
 674 void em28xx_stop_urbs(struct em28xx *dev);
 675 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 676 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 677 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 678 void em28xx_wake_i2c(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 struct em28xx_board em28xx_boards[];
 691 extern struct usb_device_id em28xx_id_table[];
 692 extern const unsigned int em28xx_bcount;
 693 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 694 void em28xx_release_resources(struct em28xx *dev);
 695
 696 /* Provided by em28xx-vbi.c */
 697 extern struct videobuf_queue_ops em28xx_vbi_qops;
 698
 699 /* printk macros */
 700
 701 #define em28xx_err(fmt, arg...) do {\
 702         printk(KERN_ERR fmt , ##arg); } while (0)
 703
 704 #define em28xx_errdev(fmt, arg...) do {\
 705         printk(KERN_ERR "%s: "fmt,\
 706                         dev->name , ##arg); } while (0)
 707
 708 #define em28xx_info(fmt, arg...) do {\
 709         printk(KERN_INFO "%s: "fmt,\
 710                         dev->name , ##arg); } while (0)
 711 #define em28xx_warn(fmt, arg...) do {\
 712         printk(KERN_WARNING "%s: "fmt,\
 713                         dev->name , ##arg); } while (0)
 714
 715 static inline int em28xx_compression_disable(struct em28xx *dev)
 716 {
 717         /* side effect of disabling scaler and mixer */
 718         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 719 }
 720
 721 static inline int em28xx_contrast_get(struct em28xx *dev)
 722 {
 723         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 724 }
 725
 726 static inline int em28xx_brightness_get(struct em28xx *dev)
 727 {
 728         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 729 }
 730
 731 static inline int em28xx_saturation_get(struct em28xx *dev)
 732 {
 733         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 734 }
 735
 736 static inline int em28xx_u_balance_get(struct em28xx *dev)
 737 {
 738         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 739 }
 740
 741 static inline int em28xx_v_balance_get(struct em28xx *dev)
 742 {
 743         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 744 }
 745
 746 static inline int em28xx_gamma_get(struct em28xx *dev)
 747 {
 748         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 749 }
 750
 751 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 752 {
 753         u8 tmp = (u8) val;
 754         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 755 }
 756
 757 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 758 {
 759         u8 tmp = (u8) val;
 760         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 761 }
 762
 763 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 764 {
 765         u8 tmp = (u8) val;
 766         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 767 }
 768
 769 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 770 {
 771         u8 tmp = (u8) val;
 772         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 773 }
 774
 775 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 776 {
 777         u8 tmp = (u8) val;
 778         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 779 }
 780
 781 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 782 {
 783         u8 tmp = (u8) val;
 784         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 785 }
 786
 787 /*FIXME: maxw should be dependent of alt mode */
 788 static inline unsigned int norm_maxw(struct em28xx *dev)
 789 {
 790         if (dev->board.is_webcam)
 791                 return dev->sensor_xres;
 792
 793         if (dev->board.max_range_640_480)
 794                 return 640;
 795
 796         return 720;
 797 }
 798
 799 static inline unsigned int norm_maxh(struct em28xx *dev)
 800 {
 801         if (dev->board.is_webcam)
 802                 return dev->sensor_yres;
 803
 804         if (dev->board.max_range_640_480)
 805                 return 480;
 806
 807         return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 808 }
 809 #endif