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 "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
 129 /* Limits minimum and default number of buffers */
 130 #define EM28XX_MIN_BUF 4
 131 #define EM28XX_DEF_BUF 8
 132
 133 /*Limits the max URB message size */
 134 #define URB_MAX_CTRL_SIZE 80
 135
 136 /* Params for validated field */
 137 #define EM28XX_BOARD_NOT_VALIDATED 1
 138 #define EM28XX_BOARD_VALIDATED     0
 139
 140 /* Params for em28xx_cmd() audio */
 141 #define EM28XX_START_AUDIO      1
 142 #define EM28XX_STOP_AUDIO       0
 143
 144 /* maximum number of em28xx boards */
 145 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 146
 147 /* maximum number of frames that can be queued */
 148 #define EM28XX_NUM_FRAMES 5
 149 /* number of frames that get used for v4l2_read() */
 150 #define EM28XX_NUM_READ_FRAMES 2
 151
 152 /* number of buffers for isoc transfers */
 153 #define EM28XX_NUM_BUFS 5
 154
 155 /* number of packets for each buffer
 156    windows requests only 64 packets .. so we better do the same
 157    this is what I found out for all alternate numbers there!
 158  */
 159 #define EM28XX_NUM_PACKETS 64
 160
 161 #define EM28XX_INTERLACED_DEFAULT 1
 162
 163 /*
 164 #define (use usbview if you want to get the other alternate number infos)
 165 #define
 166 #define alternate number 2
 167 #define                         Endpoint Address: 82
 168                         Direction: in
 169                         Attribute: 1
 170                         Type: Isoc
 171                         Max Packet Size: 1448
 172                         Interval: 125us
 173
 174   alternate number 7
 175
 176                         Endpoint Address: 82
 177                         Direction: in
 178                         Attribute: 1
 179                         Type: Isoc
 180                         Max Packet Size: 3072
 181                         Interval: 125us
 182 */
 183
 184 /* time to wait when stopping the isoc transfer */
 185 #define EM28XX_URB_TIMEOUT \
 186                         msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 187
 188 /* time in msecs to wait for i2c writes to finish */
 189 #define EM2800_I2C_WRITE_TIMEOUT 20
 190
 191 enum em28xx_mode {
 192         EM28XX_SUSPEND,
 193         EM28XX_ANALOG_MODE,
 194         EM28XX_DIGITAL_MODE,
 195 };
 196
 197
 198 struct em28xx;
 199
 200 struct em28xx_usb_isoc_ctl {
 201                 /* max packet size of isoc transaction */
 202         int                             max_pkt_size;
 203
 204                 /* number of allocated urbs */
 205         int                             num_bufs;
 206
 207                 /* urb for isoc transfers */
 208         struct urb                      **urb;
 209
 210                 /* transfer buffers for isoc transfer */
 211         char                            **transfer_buffer;
 212
 213                 /* Last buffer command and region */
 214         u8                              cmd;
 215         int                             pos, size, pktsize;
 216
 217                 /* Last field: ODD or EVEN? */
 218         int                             field;
 219
 220                 /* Stores incomplete commands */
 221         u32                             tmp_buf;
 222         int                             tmp_buf_len;
 223
 224                 /* Stores already requested buffers */
 225         struct em28xx_buffer            *vid_buf;
 226         struct em28xx_buffer            *vbi_buf;
 227
 228                 /* Stores the number of received fields */
 229         int                             nfields;
 230
 231                 /* isoc urb callback */
 232         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 233
 234 };
 235
 236 /* Struct to enumberate video formats */
 237 struct em28xx_fmt {
 238         char  *name;
 239         u32   fourcc;          /* v4l2 format id */
 240         int   depth;
 241         int   reg;
 242 };
 243
 244 /* buffer for one video frame */
 245 struct em28xx_buffer {
 246         /* common v4l buffer stuff -- must be first */
 247         struct videobuf_buffer vb;
 248
 249         struct list_head frame;
 250         int top_field;
 251         int receiving;
 252 };
 253
 254 struct em28xx_dmaqueue {
 255         struct list_head       active;
 256         struct list_head       queued;
 257
 258         wait_queue_head_t          wq;
 259
 260         /* Counters to control buffer fill */
 261         int                        pos;
 262 };
 263
 264 /* io methods */
 265 enum em28xx_io_method {
 266         IO_NONE,
 267         IO_READ,
 268         IO_MMAP,
 269 };
 270
 271 /* inputs */
 272
 273 #define MAX_EM28XX_INPUT 4
 274 enum enum28xx_itype {
 275         EM28XX_VMUX_COMPOSITE1 = 1,
 276         EM28XX_VMUX_COMPOSITE2,
 277         EM28XX_VMUX_COMPOSITE3,
 278         EM28XX_VMUX_COMPOSITE4,
 279         EM28XX_VMUX_SVIDEO,
 280         EM28XX_VMUX_TELEVISION,
 281         EM28XX_VMUX_CABLE,
 282         EM28XX_VMUX_DVB,
 283         EM28XX_VMUX_DEBUG,
 284         EM28XX_RADIO,
 285 };
 286
 287 enum em28xx_ac97_mode {
 288         EM28XX_NO_AC97 = 0,
 289         EM28XX_AC97_EM202,
 290         EM28XX_AC97_SIGMATEL,
 291         EM28XX_AC97_OTHER,
 292 };
 293
 294 struct em28xx_audio_mode {
 295         enum em28xx_ac97_mode ac97;
 296
 297         u16 ac97_feat;
 298         u32 ac97_vendor_id;
 299
 300         unsigned int has_audio:1;
 301
 302         unsigned int i2s_3rates:1;
 303         unsigned int i2s_5rates:1;
 304 };
 305
 306 /* em28xx has two audio inputs: tuner and line in.
 307    However, on most devices, an auxiliary AC97 codec device is used.
 308    The AC97 device may have several different inputs and outputs,
 309    depending on their model. So, it is possible to use AC97 mixer to
 310    address more than two different entries.
 311  */
 312 enum em28xx_amux {
 313         /* This is the only entry for em28xx tuner input */
 314         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 315
 316         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 317
 318         /* Some less-common mixer setups */
 319         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 320         EM28XX_AMUX_PHONE,
 321         EM28XX_AMUX_MIC,
 322         EM28XX_AMUX_CD,
 323         EM28XX_AMUX_AUX,
 324         EM28XX_AMUX_PCM_OUT,
 325 };
 326
 327 enum em28xx_aout {
 328         /* AC97 outputs */
 329         EM28XX_AOUT_MASTER = 1 << 0,
 330         EM28XX_AOUT_LINE   = 1 << 1,
 331         EM28XX_AOUT_MONO   = 1 << 2,
 332         EM28XX_AOUT_LFE    = 1 << 3,
 333         EM28XX_AOUT_SURR   = 1 << 4,
 334
 335         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 336         EM28XX_AOUT_PCM_IN = 1 << 7,
 337
 338         /* Bits 10-8 are used to indicate the PCM IN record select */
 339         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 340         EM28XX_AOUT_PCM_CD      = 1 << 8,
 341         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 342         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 343         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 344         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 345         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 346         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 347 };
 348
 349 static inline int ac97_return_record_select(int a_out)
 350 {
 351         return (a_out & 0x700) >> 8;
 352 }
 353
 354 struct em28xx_reg_seq {
 355         int reg;
 356         unsigned char val, mask;
 357         int sleep;
 358 };
 359
 360 struct em28xx_input {
 361         enum enum28xx_itype type;
 362         unsigned int vmux;
 363         enum em28xx_amux amux;
 364         enum em28xx_aout aout;
 365         struct em28xx_reg_seq *gpio;
 366 };
 367
 368 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 369
 370 enum em28xx_decoder {
 371         EM28XX_NODECODER = 0,
 372         EM28XX_TVP5150,
 373         EM28XX_SAA711X,
 374 };
 375
 376 enum em28xx_sensor {
 377         EM28XX_NOSENSOR = 0,
 378         EM28XX_MT9V011,
 379         EM28XX_MT9M001,
 380         EM28XX_MT9M111,
 381 };
 382
 383 enum em28xx_adecoder {
 384         EM28XX_NOADECODER = 0,
 385         EM28XX_TVAUDIO,
 386 };
 387
 388 struct em28xx_board {
 389         char *name;
 390         int vchannels;
 391         int tuner_type;
 392         int tuner_addr;
 393
 394         /* i2c flags */
 395         unsigned int tda9887_conf;
 396
 397         /* GPIO sequences */
 398         struct em28xx_reg_seq *dvb_gpio;
 399         struct em28xx_reg_seq *suspend_gpio;
 400         struct em28xx_reg_seq *tuner_gpio;
 401         struct em28xx_reg_seq *mute_gpio;
 402
 403         unsigned int is_em2800:1;
 404         unsigned int has_msp34xx:1;
 405         unsigned int mts_firmware:1;
 406         unsigned int max_range_640_480:1;
 407         unsigned int has_dvb:1;
 408         unsigned int has_snapshot_button:1;
 409         unsigned int is_webcam:1;
 410         unsigned int valid:1;
 411         unsigned int has_ir_i2c:1;
 412
 413         unsigned char xclk, i2c_speed;
 414         unsigned char radio_addr;
 415         unsigned short tvaudio_addr;
 416
 417         enum em28xx_decoder decoder;
 418         enum em28xx_adecoder adecoder;
 419
 420         struct em28xx_input       input[MAX_EM28XX_INPUT];
 421         struct em28xx_input       radio;
 422         char                      *ir_codes;
 423 };
 424
 425 struct em28xx_eeprom {
 426         u32 id;                 /* 0x9567eb1a */
 427         u16 vendor_ID;
 428         u16 product_ID;
 429
 430         u16 chip_conf;
 431
 432         u16 board_conf;
 433
 434         u16 string1, string2, string3;
 435
 436         u8 string_idx_table;
 437 };
 438
 439 /* device states */
 440 enum em28xx_dev_state {
 441         DEV_INITIALIZED = 0x01,
 442         DEV_DISCONNECTED = 0x02,
 443         DEV_MISCONFIGURED = 0x04,
 444 };
 445
 446 #define EM28XX_AUDIO_BUFS 5
 447 #define EM28XX_NUM_AUDIO_PACKETS 64
 448 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 449 #define EM28XX_CAPTURE_STREAM_EN 1
 450
 451 /* em28xx extensions */
 452 #define EM28XX_AUDIO   0x10
 453 #define EM28XX_DVB     0x20
 454
 455 /* em28xx resource types (used for res_get/res_lock etc */
 456 #define EM28XX_RESOURCE_VIDEO 0x01
 457 #define EM28XX_RESOURCE_VBI   0x02
 458
 459 struct em28xx_audio {
 460         char name[50];
 461         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 462         struct urb *urb[EM28XX_AUDIO_BUFS];
 463         struct usb_device *udev;
 464         unsigned int capture_transfer_done;
 465         struct snd_pcm_substream   *capture_pcm_substream;
 466
 467         unsigned int hwptr_done_capture;
 468         struct snd_card            *sndcard;
 469
 470         int users;
 471         spinlock_t slock;
 472 };
 473
 474 struct em28xx;
 475
 476 struct em28xx_fh {
 477         struct em28xx *dev;
 478         int           radio;
 479         unsigned int  resources;
 480
 481         struct videobuf_queue        vb_vidq;
 482         struct videobuf_queue        vb_vbiq;
 483
 484         enum v4l2_buf_type           type;
 485 };
 486
 487 /* main device struct */
 488 struct em28xx {
 489         /* generic device properties */
 490         char name[30];          /* name (including minor) of the device */
 491         int model;              /* index in the device_data struct */
 492         int devno;              /* marks the number of this device */
 493         enum em28xx_chip_id chip_id;
 494
 495         int audio_ifnum;
 496
 497         struct v4l2_device v4l2_dev;
 498         struct em28xx_board board;
 499
 500         /* Webcam specific fields */
 501         enum em28xx_sensor em28xx_sensor;
 502         int sensor_xres, sensor_yres;
 503         int sensor_xtal;
 504
 505         /* Allows progressive (e. g. non-interlaced) mode */
 506         int progressive;
 507
 508         /* Vinmode/Vinctl used at the driver */
 509         int vinmode, vinctl;
 510
 511         unsigned int has_audio_class:1;
 512         unsigned int has_alsa_audio:1;
 513         unsigned int is_audio_only:1;
 514
 515         /* Controls audio streaming */
 516         struct work_struct wq_trigger;              /* Trigger to start/stop audio for alsa module */
 517          atomic_t       stream_started;      /* stream should be running if true */
 518
 519         struct em28xx_fmt *format;
 520
 521         struct em28xx_IR *ir;
 522
 523         /* Some older em28xx chips needs a waiting time after writing */
 524         unsigned int wait_after_write;
 525
 526         struct list_head        devlist;
 527
 528         u32 i2s_speed;          /* I2S speed for audio digital stream */
 529
 530         struct em28xx_audio_mode audio_mode;
 531
 532         int tuner_type;         /* type of the tuner */
 533         int tuner_addr;         /* tuner address */
 534         int tda9887_conf;
 535         /* i2c i/o */
 536         struct i2c_adapter i2c_adap;
 537         struct i2c_client i2c_client;
 538         /* video for linux */
 539         int users;              /* user count for exclusive use */
 540         struct video_device *vdev;      /* video for linux device struct */
 541         v4l2_std_id norm;       /* selected tv norm */
 542         int ctl_freq;           /* selected frequency */
 543         unsigned int ctl_input; /* selected input */
 544         unsigned int ctl_ainput;/* selected audio input */
 545         unsigned int ctl_aoutput;/* selected audio output */
 546         int mute;
 547         int volume;
 548         /* frame properties */
 549         int width;              /* current frame width */
 550         int height;             /* current frame height */
 551         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 552         unsigned vscale;        /* vertical scale factor (see datasheet) */
 553         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 554         unsigned int video_bytesread;   /* Number of bytes read */
 555
 556         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 557         unsigned long i2c_hash; /* i2c devicelist hash -
 558                                    for boards with generic ID */
 559
 560         struct em28xx_audio adev;
 561
 562         /* states */
 563         enum em28xx_dev_state state;
 564         enum em28xx_io_method io;
 565
 566         /* vbi related state tracking */
 567         int capture_type;
 568         int vbi_read;
 569         unsigned char cur_field;
 570         unsigned int vbi_width;
 571         unsigned int vbi_height; /* lines per field */
 572
 573         struct work_struct         request_module_wk;
 574
 575         /* locks */
 576         struct mutex lock;
 577         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 578         /* spinlock_t queue_lock; */
 579         struct list_head inqueue, outqueue;
 580         wait_queue_head_t open, wait_frame, wait_stream;
 581         struct video_device *vbi_dev;
 582         struct video_device *radio_dev;
 583
 584         /* resources in use */
 585         unsigned int resources;
 586
 587         unsigned char eedata[256];
 588
 589         /* Isoc control struct */
 590         struct em28xx_dmaqueue vidq;
 591         struct em28xx_dmaqueue vbiq;
 592         struct em28xx_usb_isoc_ctl isoc_ctl;
 593         spinlock_t slock;
 594
 595         /* usb transfer */
 596         struct usb_device *udev;        /* the usb device */
 597         int alt;                /* alternate */
 598         int max_pkt_size;       /* max packet size of isoc transaction */
 599         int num_alt;            /* Number of alternative settings */
 600         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 601         int dvb_alt;                            /* alternate for DVB */
 602         unsigned int dvb_max_pkt_size;          /* wMaxPacketSize for DVB */
 603         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 604         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
 605                                                    transfer */
 606         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 607
 608         /* helper funcs that call usb_control_msg */
 609         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 610                                         char *buf, int len);
 611         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 612         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 613                                         char *buf, int len);
 614         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 615                                       char *buf, int len);
 616         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 617
 618         enum em28xx_mode mode;
 619
 620         /* register numbers for GPO/GPIO registers */
 621         u16 reg_gpo_num, reg_gpio_num;
 622
 623         /* Caches GPO and GPIO registers */
 624         unsigned char   reg_gpo, reg_gpio;
 625
 626         /* Snapshot button */
 627         char snapshot_button_path[30];  /* path of the input dev */
 628         struct input_dev *sbutton_input_dev;
 629         struct delayed_work sbutton_query_work;
 630
 631         struct em28xx_dvb *dvb;
 632
 633         /* I2C keyboard data */
 634         struct IR_i2c_init_data init_data;
 635 };
 636
 637 struct em28xx_ops {
 638         struct list_head next;
 639         char *name;
 640         int id;
 641         int (*init)(struct em28xx *);
 642         int (*fini)(struct em28xx *);
 643 };
 644
 645 /* Provided by em28xx-i2c.c */
 646 void em28xx_do_i2c_scan(struct em28xx *dev);
 647 int  em28xx_i2c_register(struct em28xx *dev);
 648 int  em28xx_i2c_unregister(struct em28xx *dev);
 649
 650 /* Provided by em28xx-core.c */
 651
 652 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 653 void em28xx_queue_unusedframes(struct em28xx *dev);
 654 void em28xx_release_buffers(struct em28xx *dev);
 655
 656 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 657                             char *buf, int len);
 658 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 659 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 660 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 661                           int len);
 662 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 663 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 664 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 665                                  u8 bitmask);
 666
 667 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 668 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 669
 670 int em28xx_audio_analog_set(struct em28xx *dev);
 671 int em28xx_audio_setup(struct em28xx *dev);
 672
 673 int em28xx_colorlevels_set_default(struct em28xx *dev);
 674 int em28xx_capture_start(struct em28xx *dev, int start);
 675 int em28xx_vbi_supported(struct em28xx *dev);
 676 int em28xx_set_outfmt(struct em28xx *dev);
 677 int em28xx_resolution_set(struct em28xx *dev);
 678 int em28xx_set_alternate(struct em28xx *dev);
 679 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 680                      int num_bufs, int max_pkt_size,
 681                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 682 void em28xx_uninit_isoc(struct em28xx *dev);
 683 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 684 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 685 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 686 void em28xx_wake_i2c(struct em28xx *dev);
 687 int em28xx_register_extension(struct em28xx_ops *dev);
 688 void em28xx_unregister_extension(struct em28xx_ops *dev);
 689 void em28xx_init_extension(struct em28xx *dev);
 690 void em28xx_close_extension(struct em28xx *dev);
 691
 692 /* Provided by em28xx-video.c */
 693 int em28xx_register_analog_devices(struct em28xx *dev);
 694 void em28xx_release_analog_resources(struct em28xx *dev);
 695
 696 /* Provided by em28xx-cards.c */
 697 extern int em2800_variant_detect(struct usb_device *udev, int model);
 698 extern void em28xx_pre_card_setup(struct em28xx *dev);
 699 extern void em28xx_card_setup(struct em28xx *dev);
 700 extern struct em28xx_board em28xx_boards[];
 701 extern struct usb_device_id em28xx_id_table[];
 702 extern const unsigned int em28xx_bcount;
 703 void em28xx_register_i2c_ir(struct em28xx *dev);
 704 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 705 void em28xx_release_resources(struct em28xx *dev);
 706
 707 /* Provided by em28xx-input.c */
 708
 709 #ifdef CONFIG_VIDEO_EM28XX_RC
 710
 711 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 712 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 713 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 714                                      u32 *ir_raw);
 715 int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key,
 716                                      u32 *ir_raw);
 717 void em28xx_register_snapshot_button(struct em28xx *dev);
 718 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 719
 720 int em28xx_ir_init(struct em28xx *dev);
 721 int em28xx_ir_fini(struct em28xx *dev);
 722
 723 #else
 724
 725 #define em28xx_get_key_terratec                 NULL
 726 #define em28xx_get_key_em_haup                  NULL
 727 #define em28xx_get_key_pinnacle_usb_grey        NULL
 728 #define em28xx_get_key_winfast_usbii_deluxe     NULL
 729
 730 static inline void em28xx_register_snapshot_button(struct em28xx *dev) {}
 731 static inline void em28xx_deregister_snapshot_button(struct em28xx *dev) {}
 732 static inline int em28xx_ir_init(struct em28xx *dev) { return 0; }
 733 static inline int em28xx_ir_fini(struct em28xx *dev) { return 0; }
 734
 735 #endif
 736
 737 /* Provided by em28xx-vbi.c */
 738 extern struct videobuf_queue_ops em28xx_vbi_qops;
 739
 740 /* printk macros */
 741
 742 #define em28xx_err(fmt, arg...) do {\
 743         printk(KERN_ERR fmt , ##arg); } while (0)
 744
 745 #define em28xx_errdev(fmt, arg...) do {\
 746         printk(KERN_ERR "%s: "fmt,\
 747                         dev->name , ##arg); } while (0)
 748
 749 #define em28xx_info(fmt, arg...) do {\
 750         printk(KERN_INFO "%s: "fmt,\
 751                         dev->name , ##arg); } while (0)
 752 #define em28xx_warn(fmt, arg...) do {\
 753         printk(KERN_WARNING "%s: "fmt,\
 754                         dev->name , ##arg); } while (0)
 755
 756 static inline int em28xx_compression_disable(struct em28xx *dev)
 757 {
 758         /* side effect of disabling scaler and mixer */
 759         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 760 }
 761
 762 static inline int em28xx_contrast_get(struct em28xx *dev)
 763 {
 764         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 765 }
 766
 767 static inline int em28xx_brightness_get(struct em28xx *dev)
 768 {
 769         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 770 }
 771
 772 static inline int em28xx_saturation_get(struct em28xx *dev)
 773 {
 774         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 775 }
 776
 777 static inline int em28xx_u_balance_get(struct em28xx *dev)
 778 {
 779         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 780 }
 781
 782 static inline int em28xx_v_balance_get(struct em28xx *dev)
 783 {
 784         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 785 }
 786
 787 static inline int em28xx_gamma_get(struct em28xx *dev)
 788 {
 789         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 790 }
 791
 792 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 793 {
 794         u8 tmp = (u8) val;
 795         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 796 }
 797
 798 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 799 {
 800         u8 tmp = (u8) val;
 801         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 802 }
 803
 804 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 805 {
 806         u8 tmp = (u8) val;
 807         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 808 }
 809
 810 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 811 {
 812         u8 tmp = (u8) val;
 813         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 814 }
 815
 816 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 817 {
 818         u8 tmp = (u8) val;
 819         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 820 }
 821
 822 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 823 {
 824         u8 tmp = (u8) val;
 825         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 826 }
 827
 828 /*FIXME: maxw should be dependent of alt mode */
 829 static inline unsigned int norm_maxw(struct em28xx *dev)
 830 {
 831         if (dev->board.is_webcam)
 832                 return dev->sensor_xres;
 833
 834         if (dev->board.max_range_640_480)
 835                 return 640;
 836
 837         return 720;
 838 }
 839
 840 static inline unsigned int norm_maxh(struct em28xx *dev)
 841 {
 842         if (dev->board.is_webcam)
 843                 return dev->sensor_yres;
 844
 845         if (dev->board.max_range_640_480)
 846                 return 480;
 847
 848         return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 849 }
 850 #endif