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
  31 #include <linux/i2c.h>
  32 #include <linux/mutex.h>
  33 #include <media/ir-kbd-i2c.h>
  34 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
  35 #include <media/videobuf-dvb.h>
  36 #endif
  37 #include "tuner-xc2028.h"
  38 #include "em28xx-reg.h"
  39
  40 /* Boards supported by driver */
  41 #define EM2800_BOARD_UNKNOWN                    0
  42 #define EM2820_BOARD_UNKNOWN                    1
  43 #define EM2820_BOARD_TERRATEC_CINERGY_250       2
  44 #define EM2820_BOARD_PINNACLE_USB_2             3
  45 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2      4
  46 #define EM2820_BOARD_MSI_VOX_USB_2              5
  47 #define EM2800_BOARD_TERRATEC_CINERGY_200       6
  48 #define EM2800_BOARD_LEADTEK_WINFAST_USBII      7
  49 #define EM2800_BOARD_KWORLD_USB2800             8
  50 #define EM2820_BOARD_PINNACLE_DVC_90            9
  51 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900    10
  52 #define EM2880_BOARD_TERRATEC_HYBRID_XS         11
  53 #define EM2820_BOARD_KWORLD_PVRTV2800RF         12
  54 #define EM2880_BOARD_TERRATEC_PRODIGY_XS        13
  55 #define EM2820_BOARD_PROLINK_PLAYTV_USB2        14
  56 #define EM2800_BOARD_VGEAR_POCKETTV             15
  57 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  58 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO       17
  59 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
  60 #define EM2860_BOARD_POINTNIX_INTRAORAL_CAMERA  19
  61 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600   20
  62 #define EM2800_BOARD_GRABBEEX_USB2800           21
  63 #define EM2750_BOARD_UNKNOWN                      22
  64 #define EM2750_BOARD_DLCW_130                     23
  65 #define EM2820_BOARD_DLINK_USB_TV                 24
  66 #define EM2820_BOARD_GADMEI_UTV310                25
  67 #define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  68 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  69 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  70 #define EM2820_BOARD_PINNACLE_DVC_100             29
  71 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  72 #define EM2821_BOARD_USBGEAR_VD204                31
  73 #define EM2821_BOARD_SUPERCOMP_USB_2              32
  74 #define EM2821_BOARD_PROLINK_PLAYTV_USB2          33
  75 #define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  76 #define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  77 #define EM2860_BOARD_NETGMBH_CAM                  36
  78 #define EM2860_BOARD_GADMEI_UTV330                37
  79 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  80 #define EM2861_BOARD_KWORLD_PVRTV_300U            39
  81 #define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  82 #define EM2870_BOARD_KWORLD_350U                  41
  83 #define EM2870_BOARD_KWORLD_355U                  42
  84 #define EM2870_BOARD_TERRATEC_XS                  43
  85 #define EM2870_BOARD_TERRATEC_XS_MT2060           44
  86 #define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  87 #define EM2870_BOARD_COMPRO_VIDEOMATE             46
  88 #define EM2880_BOARD_KWORLD_DVB_305U              47
  89 #define EM2880_BOARD_KWORLD_DVB_310U              48
  90 #define EM2880_BOARD_MSI_DIGIVOX_AD               49
  91 #define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  92 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  93 #define EM2881_BOARD_DNT_DA2_HYBRID               52
  94 #define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  95 #define EM2882_BOARD_KWORLD_VS_DVBT               54
  96 #define EM2882_BOARD_TERRATEC_HYBRID_XS           55
  97 #define EM2882_BOARD_PINNACLE_HYBRID_PRO          56
  98 #define EM2883_BOARD_KWORLD_HYBRID_A316           57
  99 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
 100 #define EM2874_BOARD_PINNACLE_PCTV_80E            59
 101 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 102
 103 /* Limits minimum and default number of buffers */
 104 #define EM28XX_MIN_BUF 4
 105 #define EM28XX_DEF_BUF 8
 106
 107 /*Limits the max URB message size */
 108 #define URB_MAX_CTRL_SIZE 80
 109
 110 /* Params for validated field */
 111 #define EM28XX_BOARD_NOT_VALIDATED 1
 112 #define EM28XX_BOARD_VALIDATED     0
 113
 114 /* maximum number of em28xx boards */
 115 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 116
 117 /* maximum number of frames that can be queued */
 118 #define EM28XX_NUM_FRAMES 5
 119 /* number of frames that get used for v4l2_read() */
 120 #define EM28XX_NUM_READ_FRAMES 2
 121
 122 /* number of buffers for isoc transfers */
 123 #define EM28XX_NUM_BUFS 5
 124
 125 /* number of packets for each buffer
 126    windows requests only 40 packets .. so we better do the same
 127    this is what I found out for all alternate numbers there!
 128  */
 129 #define EM28XX_NUM_PACKETS 40
 130
 131 /* default alternate; 0 means choose the best */
 132 #define EM28XX_PINOUT 0
 133
 134 #define EM28XX_INTERLACED_DEFAULT 1
 135
 136 /*
 137 #define (use usbview if you want to get the other alternate number infos)
 138 #define
 139 #define alternate number 2
 140 #define                         Endpoint Address: 82
 141                         Direction: in
 142                         Attribute: 1
 143                         Type: Isoc
 144                         Max Packet Size: 1448
 145                         Interval: 125us
 146
 147   alternate number 7
 148
 149                         Endpoint Address: 82
 150                         Direction: in
 151                         Attribute: 1
 152                         Type: Isoc
 153                         Max Packet Size: 3072
 154                         Interval: 125us
 155 */
 156
 157 /* time to wait when stopping the isoc transfer */
 158 #define EM28XX_URB_TIMEOUT       msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 159
 160 /* time in msecs to wait for i2c writes to finish */
 161 #define EM2800_I2C_WRITE_TIMEOUT 20
 162
 163 enum em28xx_mode {
 164         EM28XX_SUSPEND,
 165         EM28XX_ANALOG_MODE,
 166         EM28XX_DIGITAL_MODE,
 167 };
 168
 169 enum em28xx_stream_state {
 170         STREAM_OFF,
 171         STREAM_INTERRUPT,
 172         STREAM_ON,
 173 };
 174
 175 struct em28xx;
 176
 177 struct em28xx_usb_isoc_ctl {
 178                 /* max packet size of isoc transaction */
 179         int                             max_pkt_size;
 180
 181                 /* number of allocated urbs */
 182         int                             num_bufs;
 183
 184                 /* urb for isoc transfers */
 185         struct urb                      **urb;
 186
 187                 /* transfer buffers for isoc transfer */
 188         char                            **transfer_buffer;
 189
 190                 /* Last buffer command and region */
 191         u8                              cmd;
 192         int                             pos, size, pktsize;
 193
 194                 /* Last field: ODD or EVEN? */
 195         int                             field;
 196
 197                 /* Stores incomplete commands */
 198         u32                             tmp_buf;
 199         int                             tmp_buf_len;
 200
 201                 /* Stores already requested buffers */
 202         struct em28xx_buffer            *buf;
 203
 204                 /* Stores the number of received fields */
 205         int                             nfields;
 206
 207                 /* isoc urb callback */
 208         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 209
 210 };
 211
 212 /* Struct to enumberate video formats */
 213 struct em28xx_fmt {
 214         char  *name;
 215         u32   fourcc;          /* v4l2 format id */
 216         int   depth;
 217         int   reg;
 218 };
 219
 220 /* buffer for one video frame */
 221 struct em28xx_buffer {
 222         /* common v4l buffer stuff -- must be first */
 223         struct videobuf_buffer vb;
 224
 225         struct list_head frame;
 226         int top_field;
 227         int receiving;
 228 };
 229
 230 struct em28xx_dmaqueue {
 231         struct list_head       active;
 232         struct list_head       queued;
 233
 234         wait_queue_head_t          wq;
 235
 236         /* Counters to control buffer fill */
 237         int                        pos;
 238 };
 239
 240 /* io methods */
 241 enum em28xx_io_method {
 242         IO_NONE,
 243         IO_READ,
 244         IO_MMAP,
 245 };
 246
 247 /* inputs */
 248
 249 #define MAX_EM28XX_INPUT 4
 250 enum enum28xx_itype {
 251         EM28XX_VMUX_COMPOSITE1 = 1,
 252         EM28XX_VMUX_COMPOSITE2,
 253         EM28XX_VMUX_COMPOSITE3,
 254         EM28XX_VMUX_COMPOSITE4,
 255         EM28XX_VMUX_SVIDEO,
 256         EM28XX_VMUX_TELEVISION,
 257         EM28XX_VMUX_CABLE,
 258         EM28XX_VMUX_DVB,
 259         EM28XX_VMUX_DEBUG,
 260         EM28XX_RADIO,
 261 };
 262
 263 enum em28xx_ac97_mode {
 264         EM28XX_NO_AC97 = 0,
 265         EM28XX_AC97_EM202,
 266         EM28XX_AC97_SIGMATEL,
 267         EM28XX_AC97_OTHER,
 268 };
 269
 270 struct em28xx_audio_mode {
 271         enum em28xx_ac97_mode ac97;
 272
 273         u16 ac97_feat;
 274         u32 ac97_vendor_id;
 275
 276         unsigned int has_audio:1;
 277
 278         unsigned int i2s_3rates:1;
 279         unsigned int i2s_5rates:1;
 280 };
 281
 282 /* em28xx has two audio inputs: tuner and line in.
 283    However, on most devices, an auxiliary AC97 codec device is used.
 284    The AC97 device may have several different inputs and outputs,
 285    depending on their model. So, it is possible to use AC97 mixer to
 286    address more than two different entries.
 287  */
 288 enum em28xx_amux {
 289         /* This is the only entry for em28xx tuner input */
 290         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 291
 292         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 293
 294         /* Some less-common mixer setups */
 295         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 296         EM28XX_AMUX_PHONE,
 297         EM28XX_AMUX_MIC,
 298         EM28XX_AMUX_CD,
 299         EM28XX_AMUX_AUX,
 300         EM28XX_AMUX_PCM_OUT,
 301 };
 302
 303 enum em28xx_aout {
 304         EM28XX_AOUT_MASTER = 1 << 0,
 305         EM28XX_AOUT_LINE   = 1 << 1,
 306         EM28XX_AOUT_MONO   = 1 << 2,
 307         EM28XX_AOUT_LFE    = 1 << 3,
 308         EM28XX_AOUT_SURR   = 1 << 4,
 309 };
 310
 311 struct em28xx_reg_seq {
 312         int reg;
 313         unsigned char val, mask;
 314         int sleep;
 315 };
 316
 317 struct em28xx_input {
 318         enum enum28xx_itype type;
 319         unsigned int vmux;
 320         enum em28xx_amux amux;
 321         enum em28xx_aout aout;
 322         struct em28xx_reg_seq *gpio;
 323 };
 324
 325 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 326
 327 enum em28xx_decoder {
 328         EM28XX_NODECODER,
 329         EM28XX_TVP5150,
 330         EM28XX_SAA711X,
 331 };
 332
 333 struct em28xx_board {
 334         char *name;
 335         int vchannels;
 336         int tuner_type;
 337         int tuner_addr;
 338
 339         /* i2c flags */
 340         unsigned int tda9887_conf;
 341
 342         /* GPIO sequences */
 343         struct em28xx_reg_seq *dvb_gpio;
 344         struct em28xx_reg_seq *suspend_gpio;
 345         struct em28xx_reg_seq *tuner_gpio;
 346
 347         unsigned int is_em2800:1;
 348         unsigned int has_msp34xx:1;
 349         unsigned int mts_firmware:1;
 350         unsigned int max_range_640_480:1;
 351         unsigned int has_dvb:1;
 352         unsigned int has_snapshot_button:1;
 353         unsigned int valid:1;
 354
 355         unsigned char xclk, i2c_speed;
 356
 357         enum em28xx_decoder decoder;
 358
 359         struct em28xx_input       input[MAX_EM28XX_INPUT];
 360         struct em28xx_input       radio;
 361         IR_KEYTAB_TYPE            *ir_codes;
 362 };
 363
 364 struct em28xx_eeprom {
 365         u32 id;                 /* 0x9567eb1a */
 366         u16 vendor_ID;
 367         u16 product_ID;
 368
 369         u16 chip_conf;
 370
 371         u16 board_conf;
 372
 373         u16 string1, string2, string3;
 374
 375         u8 string_idx_table;
 376 };
 377
 378 /* device states */
 379 enum em28xx_dev_state {
 380         DEV_INITIALIZED = 0x01,
 381         DEV_DISCONNECTED = 0x02,
 382         DEV_MISCONFIGURED = 0x04,
 383 };
 384
 385 #define EM28XX_AUDIO_BUFS 5
 386 #define EM28XX_NUM_AUDIO_PACKETS 64
 387 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 388 #define EM28XX_CAPTURE_STREAM_EN 1
 389
 390 /* em28xx extensions */
 391 #define EM28XX_AUDIO   0x10
 392 #define EM28XX_DVB     0x20
 393
 394 struct em28xx_audio {
 395         char name[50];
 396         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 397         struct urb *urb[EM28XX_AUDIO_BUFS];
 398         struct usb_device *udev;
 399         unsigned int capture_transfer_done;
 400         struct snd_pcm_substream   *capture_pcm_substream;
 401
 402         unsigned int hwptr_done_capture;
 403         struct snd_card            *sndcard;
 404
 405         int users, shutdown;
 406         enum em28xx_stream_state capture_stream;
 407         spinlock_t slock;
 408 };
 409
 410 struct em28xx;
 411
 412 struct em28xx_fh {
 413         struct em28xx *dev;
 414         unsigned int  stream_on:1;      /* Locks streams */
 415         int           radio;
 416
 417         struct videobuf_queue        vb_vidq;
 418
 419         enum v4l2_buf_type           type;
 420 };
 421
 422 /* main device struct */
 423 struct em28xx {
 424         /* generic device properties */
 425         char name[30];          /* name (including minor) of the device */
 426         int model;              /* index in the device_data struct */
 427         int devno;              /* marks the number of this device */
 428         enum em28xx_chip_id chip_id;
 429
 430         struct em28xx_board board;
 431
 432         unsigned int stream_on:1;       /* Locks streams */
 433         unsigned int has_audio_class:1;
 434         unsigned int has_alsa_audio:1;
 435
 436         struct em28xx_fmt *format;
 437
 438         struct em28xx_IR *ir;
 439
 440         /* Some older em28xx chips needs a waiting time after writing */
 441         unsigned int wait_after_write;
 442
 443         struct list_head        devlist;
 444
 445         u32 i2s_speed;          /* I2S speed for audio digital stream */
 446
 447         struct em28xx_audio_mode audio_mode;
 448
 449         int tuner_type;         /* type of the tuner */
 450         int tuner_addr;         /* tuner address */
 451         int tda9887_conf;
 452         /* i2c i/o */
 453         struct i2c_adapter i2c_adap;
 454         struct i2c_client i2c_client;
 455         /* video for linux */
 456         int users;              /* user count for exclusive use */
 457         struct video_device *vdev;      /* video for linux device struct */
 458         v4l2_std_id norm;       /* selected tv norm */
 459         int ctl_freq;           /* selected frequency */
 460         unsigned int ctl_input; /* selected input */
 461         unsigned int ctl_ainput;/* selected audio input */
 462         unsigned int ctl_aoutput;/* selected audio output */
 463         int mute;
 464         int volume;
 465         /* frame properties */
 466         int width;              /* current frame width */
 467         int height;             /* current frame height */
 468         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 469         unsigned vscale;        /* vertical scale factor (see datasheet) */
 470         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 471         unsigned int video_bytesread;   /* Number of bytes read */
 472
 473         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 474         unsigned long i2c_hash; /* i2c devicelist hash -
 475                                    for boards with generic ID */
 476
 477         struct em28xx_audio *adev;
 478
 479         /* states */
 480         enum em28xx_dev_state state;
 481         enum em28xx_io_method io;
 482
 483         struct work_struct         request_module_wk;
 484
 485         /* locks */
 486         struct mutex lock;
 487         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 488         /* spinlock_t queue_lock; */
 489         struct list_head inqueue, outqueue;
 490         wait_queue_head_t open, wait_frame, wait_stream;
 491         struct video_device *vbi_dev;
 492         struct video_device *radio_dev;
 493
 494         unsigned char eedata[256];
 495
 496         /* Isoc control struct */
 497         struct em28xx_dmaqueue vidq;
 498         struct em28xx_usb_isoc_ctl isoc_ctl;
 499         spinlock_t slock;
 500
 501         /* usb transfer */
 502         struct usb_device *udev;        /* the usb device */
 503         int alt;                /* alternate */
 504         int max_pkt_size;       /* max packet size of isoc transaction */
 505         int num_alt;            /* Number of alternative settings */
 506         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 507         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 508         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
 509         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 510
 511         /* helper funcs that call usb_control_msg */
 512         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 513                                         char *buf, int len);
 514         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 515         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 516                                         char *buf, int len);
 517         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 518                                       char *buf, int len);
 519         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 520
 521         enum em28xx_mode mode;
 522
 523         /* register numbers for GPO/GPIO registers */
 524         u16 reg_gpo_num, reg_gpio_num;
 525
 526         /* Caches GPO and GPIO registers */
 527         unsigned char   reg_gpo, reg_gpio;
 528
 529         /* Snapshot button */
 530         char snapshot_button_path[30];  /* path of the input dev */
 531         struct input_dev *sbutton_input_dev;
 532         struct delayed_work sbutton_query_work;
 533
 534         struct em28xx_dvb *dvb;
 535 };
 536
 537 struct em28xx_ops {
 538         struct list_head next;
 539         char *name;
 540         int id;
 541         int (*init)(struct em28xx *);
 542         int (*fini)(struct em28xx *);
 543 };
 544
 545 /* Provided by em28xx-i2c.c */
 546
 547 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
 548 void em28xx_do_i2c_scan(struct em28xx *dev);
 549 int em28xx_i2c_register(struct em28xx *dev);
 550 int em28xx_i2c_unregister(struct em28xx *dev);
 551
 552 /* Provided by em28xx-core.c */
 553
 554 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 555 void em28xx_queue_unusedframes(struct em28xx *dev);
 556 void em28xx_release_buffers(struct em28xx *dev);
 557
 558 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 559                             char *buf, int len);
 560 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 561 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 562 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 563                           int len);
 564 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 565 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 566
 567 int em28xx_audio_analog_set(struct em28xx *dev);
 568 int em28xx_audio_setup(struct em28xx *dev);
 569
 570 int em28xx_colorlevels_set_default(struct em28xx *dev);
 571 int em28xx_capture_start(struct em28xx *dev, int start);
 572 int em28xx_set_outfmt(struct em28xx *dev);
 573 int em28xx_resolution_set(struct em28xx *dev);
 574 int em28xx_set_alternate(struct em28xx *dev);
 575 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 576                      int num_bufs, int max_pkt_size,
 577                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 578 void em28xx_uninit_isoc(struct em28xx *dev);
 579 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 580 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 581
 582 /* Provided by em28xx-video.c */
 583 int em28xx_register_extension(struct em28xx_ops *dev);
 584 void em28xx_unregister_extension(struct em28xx_ops *dev);
 585
 586 /* Provided by em28xx-cards.c */
 587 extern int em2800_variant_detect(struct usb_device *udev, int model);
 588 extern void em28xx_pre_card_setup(struct em28xx *dev);
 589 extern void em28xx_card_setup(struct em28xx *dev);
 590 extern struct em28xx_board em28xx_boards[];
 591 extern struct usb_device_id em28xx_id_table[];
 592 extern const unsigned int em28xx_bcount;
 593 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 594 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 595
 596 /* Provided by em28xx-input.c */
 597 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 598 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 599 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 600                                      u32 *ir_raw);
 601 void em28xx_register_snapshot_button(struct em28xx *dev);
 602 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 603
 604 int em28xx_ir_init(struct em28xx *dev);
 605 int em28xx_ir_fini(struct em28xx *dev);
 606
 607 /* printk macros */
 608
 609 #define em28xx_err(fmt, arg...) do {\
 610         printk(KERN_ERR fmt , ##arg); } while (0)
 611
 612 #define em28xx_errdev(fmt, arg...) do {\
 613         printk(KERN_ERR "%s: "fmt,\
 614                         dev->name , ##arg); } while (0)
 615
 616 #define em28xx_info(fmt, arg...) do {\
 617         printk(KERN_INFO "%s: "fmt,\
 618                         dev->name , ##arg); } while (0)
 619 #define em28xx_warn(fmt, arg...) do {\
 620         printk(KERN_WARNING "%s: "fmt,\
 621                         dev->name , ##arg); } while (0)
 622
 623 static inline int em28xx_compression_disable(struct em28xx *dev)
 624 {
 625         /* side effect of disabling scaler and mixer */
 626         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 627 }
 628
 629 static inline int em28xx_contrast_get(struct em28xx *dev)
 630 {
 631         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 632 }
 633
 634 static inline int em28xx_brightness_get(struct em28xx *dev)
 635 {
 636         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 637 }
 638
 639 static inline int em28xx_saturation_get(struct em28xx *dev)
 640 {
 641         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 642 }
 643
 644 static inline int em28xx_u_balance_get(struct em28xx *dev)
 645 {
 646         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 647 }
 648
 649 static inline int em28xx_v_balance_get(struct em28xx *dev)
 650 {
 651         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 652 }
 653
 654 static inline int em28xx_gamma_get(struct em28xx *dev)
 655 {
 656         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 657 }
 658
 659 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 660 {
 661         u8 tmp = (u8) val;
 662         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 663 }
 664
 665 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 666 {
 667         u8 tmp = (u8) val;
 668         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 669 }
 670
 671 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 672 {
 673         u8 tmp = (u8) val;
 674         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 675 }
 676
 677 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 678 {
 679         u8 tmp = (u8) val;
 680         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 681 }
 682
 683 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 684 {
 685         u8 tmp = (u8) val;
 686         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 687 }
 688
 689 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 690 {
 691         u8 tmp = (u8) val;
 692         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 693 }
 694
 695 /*FIXME: maxw should be dependent of alt mode */
 696 static inline unsigned int norm_maxw(struct em28xx *dev)
 697 {
 698         if (dev->board.max_range_640_480)
 699                 return 640;
 700         else
 701                 return 720;
 702 }
 703
 704 static inline unsigned int norm_maxh(struct em28xx *dev)
 705 {
 706         if (dev->board.max_range_640_480)
 707                 return 480;
 708         else
 709                 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 710 }
 711 #endif