drivers/media/video/em28xx/em28xx.h

   1 /*
   2    em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
   3
   4    Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
   5                       Ludovico Cavedon <cavedon@sssup.it>
   6                       Mauro Carvalho Chehab <mchehab@infradead.org>
   7
   8    Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #ifndef _EM28XX_H
  26 #define _EM28XX_H
  27
  28 #include <linux/videodev2.h>
  29 #include <media/videobuf-vmalloc.h>
  30 #include <media/v4l2-device.h>
  31
  32 #include <linux/i2c.h>
  33 #include <linux/mutex.h>
  34 #include <media/ir-kbd-i2c.h>
  35 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
  36 #include <media/videobuf-dvb.h>
  37 #endif
  38 #include "tuner-xc2028.h"
  39 #include "em28xx-reg.h"
  40
  41 /* Boards supported by driver */
  42 #define EM2800_BOARD_UNKNOWN                    0
  43 #define EM2820_BOARD_UNKNOWN                    1
  44 #define EM2820_BOARD_TERRATEC_CINERGY_250       2
  45 #define EM2820_BOARD_PINNACLE_USB_2             3
  46 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
  47 #define EM2820_BOARD_MSI_VOX_USB_2              5
  48 #define EM2800_BOARD_TERRATEC_CINERGY_200       6
  49 #define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
  50 #define EM2800_BOARD_KWORLD_USB2800             8
  51 #define EM2820_BOARD_PINNACLE_DVC_90            9
  52 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900    10
  53 #define EM2880_BOARD_TERRATEC_HYBRID_XS         11
  54 #define EM2820_BOARD_KWORLD_PVRTV2800RF         12
  55 #define EM2880_BOARD_TERRATEC_PRODIGY_XS        13
  56 #define EM2820_BOARD_PROLINK_PLAYTV_USB2        14
  57 #define EM2800_BOARD_VGEAR_POCKETTV             15
  58 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  59 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO       17
  60 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
  61 #define EM2860_BOARD_POINTNIX_INTRAORAL_CAMERA  19
  62 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
  63 #define EM2800_BOARD_GRABBEEX_USB2800           21
  64 #define EM2750_BOARD_UNKNOWN                      22
  65 #define EM2750_BOARD_DLCW_130                     23
  66 #define EM2820_BOARD_DLINK_USB_TV                 24
  67 #define EM2820_BOARD_GADMEI_UTV310                25
  68 #define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  69 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  70 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  71 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  72 #define EM2821_BOARD_USBGEAR_VD204                31
  73 #define EM2821_BOARD_SUPERCOMP_USB_2              32
  74 #define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  75 #define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  76 #define EM2860_BOARD_NETGMBH_CAM                  36
  77 #define EM2860_BOARD_GADMEI_UTV330                37
  78 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  79 #define EM2861_BOARD_KWORLD_PVRTV_300U            39
  80 #define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  81 #define EM2870_BOARD_KWORLD_350U                  41
  82 #define EM2870_BOARD_KWORLD_355U                  42
  83 #define EM2870_BOARD_TERRATEC_XS                  43
  84 #define EM2870_BOARD_TERRATEC_XS_MT2060           44
  85 #define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  86 #define EM2870_BOARD_COMPRO_VIDEOMATE             46
  87 #define EM2880_BOARD_KWORLD_DVB_305U              47
  88 #define EM2880_BOARD_KWORLD_DVB_310U              48
  89 #define EM2880_BOARD_MSI_DIGIVOX_AD               49
  90 #define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  91 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  92 #define EM2881_BOARD_DNT_DA2_HYBRID               52
  93 #define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  94 #define EM2882_BOARD_KWORLD_VS_DVBT               54
  95 #define EM2882_BOARD_TERRATEC_HYBRID_XS           55
  96 #define EM2882_BOARD_PINNACLE_HYBRID_PRO          56
  97 #define EM2883_BOARD_KWORLD_HYBRID_330U                  57
  98 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
  99 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 100 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 101 #define EM2820_BOARD_GADMEI_TVR200                62
 102 #define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 103 #define EM2860_BOARD_EASYCAP                      64
 104 #define EM2820_BOARD_IODATA_GVMVP_SZ              65
 105 #define EM2880_BOARD_EMPIRE_DUAL_TV               66
 106
 107 /* Limits minimum and default number of buffers */
 108 #define EM28XX_MIN_BUF 4
 109 #define EM28XX_DEF_BUF 8
 110
 111 /*Limits the max URB message size */
 112 #define URB_MAX_CTRL_SIZE 80
 113
 114 /* Params for validated field */
 115 #define EM28XX_BOARD_NOT_VALIDATED 1
 116 #define EM28XX_BOARD_VALIDATED     0
 117
 118 /* Params for em28xx_cmd() audio */
 119 #define EM28XX_START_AUDIO      1
 120 #define EM28XX_STOP_AUDIO       0
 121
 122 /* maximum number of em28xx boards */
 123 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 124
 125 /* maximum number of frames that can be queued */
 126 #define EM28XX_NUM_FRAMES 5
 127 /* number of frames that get used for v4l2_read() */
 128 #define EM28XX_NUM_READ_FRAMES 2
 129
 130 /* number of buffers for isoc transfers */
 131 #define EM28XX_NUM_BUFS 5
 132
 133 /* number of packets for each buffer
 134    windows requests only 40 packets .. so we better do the same
 135    this is what I found out for all alternate numbers there!
 136  */
 137 #define EM28XX_NUM_PACKETS 40
 138
 139 /* default alternate; 0 means choose the best */
 140 #define EM28XX_PINOUT 0
 141
 142 #define EM28XX_INTERLACED_DEFAULT 1
 143
 144 /*
 145 #define (use usbview if you want to get the other alternate number infos)
 146 #define
 147 #define alternate number 2
 148 #define                         Endpoint Address: 82
 149                         Direction: in
 150                         Attribute: 1
 151                         Type: Isoc
 152                         Max Packet Size: 1448
 153                         Interval: 125us
 154
 155   alternate number 7
 156
 157                         Endpoint Address: 82
 158                         Direction: in
 159                         Attribute: 1
 160                         Type: Isoc
 161                         Max Packet Size: 3072
 162                         Interval: 125us
 163 */
 164
 165 /* time to wait when stopping the isoc transfer */
 166 #define EM28XX_URB_TIMEOUT \
 167                         msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 168
 169 /* time in msecs to wait for i2c writes to finish */
 170 #define EM2800_I2C_WRITE_TIMEOUT 20
 171
 172 enum em28xx_mode {
 173         EM28XX_SUSPEND,
 174         EM28XX_ANALOG_MODE,
 175         EM28XX_DIGITAL_MODE,
 176 };
 177
 178 enum em28xx_stream_state {
 179         STREAM_OFF,
 180         STREAM_INTERRUPT,
 181         STREAM_ON,
 182 };
 183
 184 struct em28xx;
 185
 186 struct em28xx_usb_isoc_ctl {
 187                 /* max packet size of isoc transaction */
 188         int                             max_pkt_size;
 189
 190                 /* number of allocated urbs */
 191         int                             num_bufs;
 192
 193                 /* urb for isoc transfers */
 194         struct urb                      **urb;
 195
 196                 /* transfer buffers for isoc transfer */
 197         char                            **transfer_buffer;
 198
 199                 /* Last buffer command and region */
 200         u8                              cmd;
 201         int                             pos, size, pktsize;
 202
 203                 /* Last field: ODD or EVEN? */
 204         int                             field;
 205
 206                 /* Stores incomplete commands */
 207         u32                             tmp_buf;
 208         int                             tmp_buf_len;
 209
 210                 /* Stores already requested buffers */
 211         struct em28xx_buffer            *buf;
 212
 213                 /* Stores the number of received fields */
 214         int                             nfields;
 215
 216                 /* isoc urb callback */
 217         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 218
 219 };
 220
 221 /* Struct to enumberate video formats */
 222 struct em28xx_fmt {
 223         char  *name;
 224         u32   fourcc;          /* v4l2 format id */
 225         int   depth;
 226         int   reg;
 227 };
 228
 229 /* buffer for one video frame */
 230 struct em28xx_buffer {
 231         /* common v4l buffer stuff -- must be first */
 232         struct videobuf_buffer vb;
 233
 234         struct list_head frame;
 235         int top_field;
 236         int receiving;
 237 };
 238
 239 struct em28xx_dmaqueue {
 240         struct list_head       active;
 241         struct list_head       queued;
 242
 243         wait_queue_head_t          wq;
 244
 245         /* Counters to control buffer fill */
 246         int                        pos;
 247 };
 248
 249 /* io methods */
 250 enum em28xx_io_method {
 251         IO_NONE,
 252         IO_READ,
 253         IO_MMAP,
 254 };
 255
 256 /* inputs */
 257
 258 #define MAX_EM28XX_INPUT 4
 259 enum enum28xx_itype {
 260         EM28XX_VMUX_COMPOSITE1 = 1,
 261         EM28XX_VMUX_COMPOSITE2,
 262         EM28XX_VMUX_COMPOSITE3,
 263         EM28XX_VMUX_COMPOSITE4,
 264         EM28XX_VMUX_SVIDEO,
 265         EM28XX_VMUX_TELEVISION,
 266         EM28XX_VMUX_CABLE,
 267         EM28XX_VMUX_DVB,
 268         EM28XX_VMUX_DEBUG,
 269         EM28XX_RADIO,
 270 };
 271
 272 enum em28xx_ac97_mode {
 273         EM28XX_NO_AC97 = 0,
 274         EM28XX_AC97_EM202,
 275         EM28XX_AC97_SIGMATEL,
 276         EM28XX_AC97_OTHER,
 277 };
 278
 279 struct em28xx_audio_mode {
 280         enum em28xx_ac97_mode ac97;
 281
 282         u16 ac97_feat;
 283         u32 ac97_vendor_id;
 284
 285         unsigned int has_audio:1;
 286
 287         unsigned int i2s_3rates:1;
 288         unsigned int i2s_5rates:1;
 289 };
 290
 291 /* em28xx has two audio inputs: tuner and line in.
 292    However, on most devices, an auxiliary AC97 codec device is used.
 293    The AC97 device may have several different inputs and outputs,
 294    depending on their model. So, it is possible to use AC97 mixer to
 295    address more than two different entries.
 296  */
 297 enum em28xx_amux {
 298         /* This is the only entry for em28xx tuner input */
 299         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 300
 301         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 302
 303         /* Some less-common mixer setups */
 304         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 305         EM28XX_AMUX_PHONE,
 306         EM28XX_AMUX_MIC,
 307         EM28XX_AMUX_CD,
 308         EM28XX_AMUX_AUX,
 309         EM28XX_AMUX_PCM_OUT,
 310 };
 311
 312 enum em28xx_aout {
 313         /* AC97 outputs */
 314         EM28XX_AOUT_MASTER = 1 << 0,
 315         EM28XX_AOUT_LINE   = 1 << 1,
 316         EM28XX_AOUT_MONO   = 1 << 2,
 317         EM28XX_AOUT_LFE    = 1 << 3,
 318         EM28XX_AOUT_SURR   = 1 << 4,
 319
 320         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 321         EM28XX_AOUT_PCM_IN = 1 << 7,
 322
 323         /* Bits 10-8 are used to indicate the PCM IN record select */
 324         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 325         EM28XX_AOUT_PCM_CD      = 1 << 8,
 326         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 327         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 328         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 329         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 330         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 331         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 332 };
 333
 334 static inline int ac97_return_record_select(int a_out)
 335 {
 336         return (a_out & 0x700) >> 8;
 337 }
 338
 339 struct em28xx_reg_seq {
 340         int reg;
 341         unsigned char val, mask;
 342         int sleep;
 343 };
 344
 345 struct em28xx_input {
 346         enum enum28xx_itype type;
 347         unsigned int vmux;
 348         enum em28xx_amux amux;
 349         enum em28xx_aout aout;
 350         struct em28xx_reg_seq *gpio;
 351 };
 352
 353 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 354
 355 enum em28xx_decoder {
 356         EM28XX_NODECODER,
 357         EM28XX_TVP5150,
 358         EM28XX_SAA711X,
 359 };
 360
 361 enum em28xx_adecoder {
 362         EM28XX_NOADECODER = 0,
 363         EM28XX_TVAUDIO,
 364 };
 365
 366 struct em28xx_board {
 367         char *name;
 368         int vchannels;
 369         int tuner_type;
 370         int tuner_addr;
 371
 372         /* i2c flags */
 373         unsigned int tda9887_conf;
 374
 375         /* GPIO sequences */
 376         struct em28xx_reg_seq *dvb_gpio;
 377         struct em28xx_reg_seq *suspend_gpio;
 378         struct em28xx_reg_seq *tuner_gpio;
 379         struct em28xx_reg_seq *mute_gpio;
 380
 381         unsigned int is_em2800:1;
 382         unsigned int has_msp34xx:1;
 383         unsigned int mts_firmware:1;
 384         unsigned int max_range_640_480:1;
 385         unsigned int has_dvb:1;
 386         unsigned int has_snapshot_button:1;
 387         unsigned int valid:1;
 388
 389         unsigned char xclk, i2c_speed;
 390         unsigned char radio_addr;
 391         unsigned short tvaudio_addr;
 392
 393         enum em28xx_decoder decoder;
 394         enum em28xx_adecoder adecoder;
 395
 396         struct em28xx_input       input[MAX_EM28XX_INPUT];
 397         struct em28xx_input       radio;
 398         IR_KEYTAB_TYPE            *ir_codes;
 399 };
 400
 401 struct em28xx_eeprom {
 402         u32 id;                 /* 0x9567eb1a */
 403         u16 vendor_ID;
 404         u16 product_ID;
 405
 406         u16 chip_conf;
 407
 408         u16 board_conf;
 409
 410         u16 string1, string2, string3;
 411
 412         u8 string_idx_table;
 413 };
 414
 415 /* device states */
 416 enum em28xx_dev_state {
 417         DEV_INITIALIZED = 0x01,
 418         DEV_DISCONNECTED = 0x02,
 419         DEV_MISCONFIGURED = 0x04,
 420 };
 421
 422 #define EM28XX_AUDIO_BUFS 5
 423 #define EM28XX_NUM_AUDIO_PACKETS 64
 424 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 425 #define EM28XX_CAPTURE_STREAM_EN 1
 426
 427 /* em28xx extensions */
 428 #define EM28XX_AUDIO   0x10
 429 #define EM28XX_DVB     0x20
 430
 431 struct em28xx_audio {
 432         char name[50];
 433         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 434         struct urb *urb[EM28XX_AUDIO_BUFS];
 435         struct usb_device *udev;
 436         unsigned int capture_transfer_done;
 437         struct snd_pcm_substream   *capture_pcm_substream;
 438
 439         unsigned int hwptr_done_capture;
 440         struct snd_card            *sndcard;
 441
 442         int users;
 443         enum em28xx_stream_state capture_stream;
 444         spinlock_t slock;
 445 };
 446
 447 struct em28xx;
 448
 449 struct em28xx_fh {
 450         struct em28xx *dev;
 451         unsigned int  stream_on:1;      /* Locks streams */
 452         int           radio;
 453
 454         struct videobuf_queue        vb_vidq;
 455
 456         enum v4l2_buf_type           type;
 457 };
 458
 459 /* main device struct */
 460 struct em28xx {
 461         /* generic device properties */
 462         char name[30];          /* name (including minor) of the device */
 463         int model;              /* index in the device_data struct */
 464         int devno;              /* marks the number of this device */
 465         enum em28xx_chip_id chip_id;
 466
 467         struct v4l2_device v4l2_dev;
 468         struct em28xx_board board;
 469
 470         unsigned int stream_on:1;       /* Locks streams */
 471         unsigned int has_audio_class:1;
 472         unsigned int has_alsa_audio:1;
 473
 474         struct em28xx_fmt *format;
 475
 476         struct em28xx_IR *ir;
 477
 478         /* Some older em28xx chips needs a waiting time after writing */
 479         unsigned int wait_after_write;
 480
 481         struct list_head        devlist;
 482
 483         u32 i2s_speed;          /* I2S speed for audio digital stream */
 484
 485         struct em28xx_audio_mode audio_mode;
 486
 487         int tuner_type;         /* type of the tuner */
 488         int tuner_addr;         /* tuner address */
 489         int tda9887_conf;
 490         /* i2c i/o */
 491         struct i2c_adapter i2c_adap;
 492         struct i2c_client i2c_client;
 493         /* video for linux */
 494         int users;              /* user count for exclusive use */
 495         struct video_device *vdev;      /* video for linux device struct */
 496         v4l2_std_id norm;       /* selected tv norm */
 497         int ctl_freq;           /* selected frequency */
 498         unsigned int ctl_input; /* selected input */
 499         unsigned int ctl_ainput;/* selected audio input */
 500         unsigned int ctl_aoutput;/* selected audio output */
 501         int mute;
 502         int volume;
 503         /* frame properties */
 504         int width;              /* current frame width */
 505         int height;             /* current frame height */
 506         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 507         unsigned vscale;        /* vertical scale factor (see datasheet) */
 508         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 509         unsigned int video_bytesread;   /* Number of bytes read */
 510
 511         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 512         unsigned long i2c_hash; /* i2c devicelist hash -
 513                                    for boards with generic ID */
 514
 515         struct em28xx_audio adev;
 516
 517         /* states */
 518         enum em28xx_dev_state state;
 519         enum em28xx_io_method io;
 520
 521         struct work_struct         request_module_wk;
 522
 523         /* locks */
 524         struct mutex lock;
 525         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 526         /* spinlock_t queue_lock; */
 527         struct list_head inqueue, outqueue;
 528         wait_queue_head_t open, wait_frame, wait_stream;
 529         struct video_device *vbi_dev;
 530         struct video_device *radio_dev;
 531
 532         unsigned char eedata[256];
 533
 534         /* Isoc control struct */
 535         struct em28xx_dmaqueue vidq;
 536         struct em28xx_usb_isoc_ctl isoc_ctl;
 537         spinlock_t slock;
 538
 539         /* usb transfer */
 540         struct usb_device *udev;        /* the usb device */
 541         int alt;                /* alternate */
 542         int max_pkt_size;       /* max packet size of isoc transaction */
 543         int num_alt;            /* Number of alternative settings */
 544         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 545         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 546         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
 547                                                    transfer */
 548         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 549
 550         /* helper funcs that call usb_control_msg */
 551         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 552                                         char *buf, int len);
 553         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 554         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 555                                         char *buf, int len);
 556         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 557                                       char *buf, int len);
 558         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 559
 560         enum em28xx_mode mode;
 561
 562         /* register numbers for GPO/GPIO registers */
 563         u16 reg_gpo_num, reg_gpio_num;
 564
 565         /* Caches GPO and GPIO registers */
 566         unsigned char   reg_gpo, reg_gpio;
 567
 568         /* Snapshot button */
 569         char snapshot_button_path[30];  /* path of the input dev */
 570         struct input_dev *sbutton_input_dev;
 571         struct delayed_work sbutton_query_work;
 572
 573         struct em28xx_dvb *dvb;
 574 };
 575
 576 struct em28xx_ops {
 577         struct list_head next;
 578         char *name;
 579         int id;
 580         int (*init)(struct em28xx *);
 581         int (*fini)(struct em28xx *);
 582 };
 583
 584 /* Provided by em28xx-i2c.c */
 585 void em28xx_do_i2c_scan(struct em28xx *dev);
 586 int  em28xx_i2c_register(struct em28xx *dev);
 587 int  em28xx_i2c_unregister(struct em28xx *dev);
 588
 589 /* Provided by em28xx-core.c */
 590
 591 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 592 void em28xx_queue_unusedframes(struct em28xx *dev);
 593 void em28xx_release_buffers(struct em28xx *dev);
 594
 595 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 596                             char *buf, int len);
 597 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 598 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 599 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 600                           int len);
 601 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 602 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 603
 604 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 605 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 606
 607 int em28xx_audio_analog_set(struct em28xx *dev);
 608 int em28xx_audio_setup(struct em28xx *dev);
 609
 610 int em28xx_colorlevels_set_default(struct em28xx *dev);
 611 int em28xx_capture_start(struct em28xx *dev, int start);
 612 int em28xx_set_outfmt(struct em28xx *dev);
 613 int em28xx_resolution_set(struct em28xx *dev);
 614 int em28xx_set_alternate(struct em28xx *dev);
 615 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 616                      int num_bufs, int max_pkt_size,
 617                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 618 void em28xx_uninit_isoc(struct em28xx *dev);
 619 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
 620 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 621 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 622 void em28xx_wake_i2c(struct em28xx *dev);
 623 void em28xx_remove_from_devlist(struct em28xx *dev);
 624 void em28xx_add_into_devlist(struct em28xx *dev);
 625 struct em28xx *em28xx_get_device(int minor,
 626                                  enum v4l2_buf_type *fh_type,
 627                                  int *has_radio);
 628 int em28xx_register_extension(struct em28xx_ops *dev);
 629 void em28xx_unregister_extension(struct em28xx_ops *dev);
 630 void em28xx_init_extension(struct em28xx *dev);
 631 void em28xx_close_extension(struct em28xx *dev);
 632
 633 /* Provided by em28xx-video.c */
 634 int em28xx_register_analog_devices(struct em28xx *dev);
 635 void em28xx_release_analog_resources(struct em28xx *dev);
 636
 637 /* Provided by em28xx-cards.c */
 638 extern int em2800_variant_detect(struct usb_device *udev, int model);
 639 extern void em28xx_pre_card_setup(struct em28xx *dev);
 640 extern void em28xx_card_setup(struct em28xx *dev);
 641 extern struct em28xx_board em28xx_boards[];
 642 extern struct usb_device_id em28xx_id_table[];
 643 extern const unsigned int em28xx_bcount;
 644 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 645 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 646 void em28xx_release_resources(struct em28xx *dev);
 647
 648 /* Provided by em28xx-input.c */
 649 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 650 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 651 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 652                                      u32 *ir_raw);
 653 void em28xx_register_snapshot_button(struct em28xx *dev);
 654 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 655
 656 int em28xx_ir_init(struct em28xx *dev);
 657 int em28xx_ir_fini(struct em28xx *dev);
 658
 659 /* printk macros */
 660
 661 #define em28xx_err(fmt, arg...) do {\
 662         printk(KERN_ERR fmt , ##arg); } while (0)
 663
 664 #define em28xx_errdev(fmt, arg...) do {\
 665         printk(KERN_ERR "%s: "fmt,\
 666                         dev->name , ##arg); } while (0)
 667
 668 #define em28xx_info(fmt, arg...) do {\
 669         printk(KERN_INFO "%s: "fmt,\
 670                         dev->name , ##arg); } while (0)
 671 #define em28xx_warn(fmt, arg...) do {\
 672         printk(KERN_WARNING "%s: "fmt,\
 673                         dev->name , ##arg); } while (0)
 674
 675 static inline int em28xx_compression_disable(struct em28xx *dev)
 676 {
 677         /* side effect of disabling scaler and mixer */
 678         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 679 }
 680
 681 static inline int em28xx_contrast_get(struct em28xx *dev)
 682 {
 683         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 684 }
 685
 686 static inline int em28xx_brightness_get(struct em28xx *dev)
 687 {
 688         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 689 }
 690
 691 static inline int em28xx_saturation_get(struct em28xx *dev)
 692 {
 693         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 694 }
 695
 696 static inline int em28xx_u_balance_get(struct em28xx *dev)
 697 {
 698         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 699 }
 700
 701 static inline int em28xx_v_balance_get(struct em28xx *dev)
 702 {
 703         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 704 }
 705
 706 static inline int em28xx_gamma_get(struct em28xx *dev)
 707 {
 708         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 709 }
 710
 711 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 712 {
 713         u8 tmp = (u8) val;
 714         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 715 }
 716
 717 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 718 {
 719         u8 tmp = (u8) val;
 720         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 721 }
 722
 723 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 724 {
 725         u8 tmp = (u8) val;
 726         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 727 }
 728
 729 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 730 {
 731         u8 tmp = (u8) val;
 732         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 733 }
 734
 735 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 736 {
 737         u8 tmp = (u8) val;
 738         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 739 }
 740
 741 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 742 {
 743         u8 tmp = (u8) val;
 744         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 745 }
 746
 747 /*FIXME: maxw should be dependent of alt mode */
 748 static inline unsigned int norm_maxw(struct em28xx *dev)
 749 {
 750         if (dev->board.max_range_640_480)
 751                 return 640;
 752         else
 753                 return 720;
 754 }
 755
 756 static inline unsigned int norm_maxh(struct em28xx *dev)
 757 {
 758         if (dev->board.max_range_640_480)
 759                 return 480;
 760         else
 761                 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 762 }
 763 #endif