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
 102 /* Limits minimum and default number of buffers */
 103 #define EM28XX_MIN_BUF 4
 104 #define EM28XX_DEF_BUF 8
 105
 106 /*Limits the max URB message size */
 107 #define URB_MAX_CTRL_SIZE 80
 108
 109 /* Params for validated field */
 110 #define EM28XX_BOARD_NOT_VALIDATED 1
 111 #define EM28XX_BOARD_VALIDATED     0
 112
 113 /* maximum number of em28xx boards */
 114 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 115
 116 /* maximum number of frames that can be queued */
 117 #define EM28XX_NUM_FRAMES 5
 118 /* number of frames that get used for v4l2_read() */
 119 #define EM28XX_NUM_READ_FRAMES 2
 120
 121 /* number of buffers for isoc transfers */
 122 #define EM28XX_NUM_BUFS 5
 123
 124 /* number of packets for each buffer
 125    windows requests only 40 packets .. so we better do the same
 126    this is what I found out for all alternate numbers there!
 127  */
 128 #define EM28XX_NUM_PACKETS 40
 129
 130 /* default alternate; 0 means choose the best */
 131 #define EM28XX_PINOUT 0
 132
 133 #define EM28XX_INTERLACED_DEFAULT 1
 134
 135 /*
 136 #define (use usbview if you want to get the other alternate number infos)
 137 #define
 138 #define alternate number 2
 139 #define                         Endpoint Address: 82
 140                         Direction: in
 141                         Attribute: 1
 142                         Type: Isoc
 143                         Max Packet Size: 1448
 144                         Interval: 125us
 145
 146   alternate number 7
 147
 148                         Endpoint Address: 82
 149                         Direction: in
 150                         Attribute: 1
 151                         Type: Isoc
 152                         Max Packet Size: 3072
 153                         Interval: 125us
 154 */
 155
 156 /* time to wait when stopping the isoc transfer */
 157 #define EM28XX_URB_TIMEOUT       msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 158
 159 /* time in msecs to wait for i2c writes to finish */
 160 #define EM2800_I2C_WRITE_TIMEOUT 20
 161
 162 enum em28xx_mode {
 163         EM28XX_SUSPEND,
 164         EM28XX_ANALOG_MODE,
 165         EM28XX_DIGITAL_MODE,
 166 };
 167
 168 enum em28xx_stream_state {
 169         STREAM_OFF,
 170         STREAM_INTERRUPT,
 171         STREAM_ON,
 172 };
 173
 174 struct em28xx;
 175
 176 struct em28xx_usb_isoc_ctl {
 177                 /* max packet size of isoc transaction */
 178         int                             max_pkt_size;
 179
 180                 /* number of allocated urbs */
 181         int                             num_bufs;
 182
 183                 /* urb for isoc transfers */
 184         struct urb                      **urb;
 185
 186                 /* transfer buffers for isoc transfer */
 187         char                            **transfer_buffer;
 188
 189                 /* Last buffer command and region */
 190         u8                              cmd;
 191         int                             pos, size, pktsize;
 192
 193                 /* Last field: ODD or EVEN? */
 194         int                             field;
 195
 196                 /* Stores incomplete commands */
 197         u32                             tmp_buf;
 198         int                             tmp_buf_len;
 199
 200                 /* Stores already requested buffers */
 201         struct em28xx_buffer            *buf;
 202
 203                 /* Stores the number of received fields */
 204         int                             nfields;
 205
 206                 /* isoc urb callback */
 207         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 208
 209 };
 210
 211 struct em28xx_fmt {
 212         char  *name;
 213         u32   fourcc;          /* v4l2 format id */
 214 };
 215
 216 /* buffer for one video frame */
 217 struct em28xx_buffer {
 218         /* common v4l buffer stuff -- must be first */
 219         struct videobuf_buffer vb;
 220
 221         struct list_head frame;
 222         int top_field;
 223         int receiving;
 224 };
 225
 226 struct em28xx_dmaqueue {
 227         struct list_head       active;
 228         struct list_head       queued;
 229
 230         wait_queue_head_t          wq;
 231
 232         /* Counters to control buffer fill */
 233         int                        pos;
 234 };
 235
 236 /* io methods */
 237 enum em28xx_io_method {
 238         IO_NONE,
 239         IO_READ,
 240         IO_MMAP,
 241 };
 242
 243 /* inputs */
 244
 245 #define MAX_EM28XX_INPUT 4
 246 enum enum28xx_itype {
 247         EM28XX_VMUX_COMPOSITE1 = 1,
 248         EM28XX_VMUX_COMPOSITE2,
 249         EM28XX_VMUX_COMPOSITE3,
 250         EM28XX_VMUX_COMPOSITE4,
 251         EM28XX_VMUX_SVIDEO,
 252         EM28XX_VMUX_TELEVISION,
 253         EM28XX_VMUX_CABLE,
 254         EM28XX_VMUX_DVB,
 255         EM28XX_VMUX_DEBUG,
 256         EM28XX_RADIO,
 257 };
 258
 259 enum em28xx_ac97_mode {
 260         EM28XX_NO_AC97 = 0,
 261         EM28XX_AC97_EM202,
 262         EM28XX_AC97_SIGMATEL,
 263         EM28XX_AC97_OTHER,
 264 };
 265
 266 struct em28xx_audio_mode {
 267         enum em28xx_ac97_mode ac97;
 268
 269         u16 ac97_feat;
 270         u32 ac97_vendor_id;
 271
 272         unsigned int has_audio:1;
 273
 274         unsigned int i2s_3rates:1;
 275         unsigned int i2s_5rates:1;
 276 };
 277
 278 /* em28xx has two audio inputs: tuner and line in.
 279    However, on most devices, an auxiliary AC97 codec device is used.
 280    The AC97 device may have several different inputs and outputs,
 281    depending on their model. So, it is possible to use AC97 mixer to
 282    address more than two different entries.
 283  */
 284 enum em28xx_amux {
 285         /* This is the only entry for em28xx tuner input */
 286         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 287
 288         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 289
 290         /* Some less-common mixer setups */
 291         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 292         EM28XX_AMUX_PHONE,
 293         EM28XX_AMUX_MIC,
 294         EM28XX_AMUX_CD,
 295         EM28XX_AMUX_AUX,
 296         EM28XX_AMUX_PCM_OUT,
 297 };
 298
 299 enum em28xx_aout {
 300         EM28XX_AOUT_MASTER = 1 << 0,
 301         EM28XX_AOUT_LINE   = 1 << 1,
 302         EM28XX_AOUT_MONO   = 1 << 2,
 303         EM28XX_AOUT_LFE    = 1 << 3,
 304         EM28XX_AOUT_SURR   = 1 << 4,
 305 };
 306
 307 struct em28xx_reg_seq {
 308         int reg;
 309         unsigned char val, mask;
 310         int sleep;
 311 };
 312
 313 struct em28xx_input {
 314         enum enum28xx_itype type;
 315         unsigned int vmux;
 316         enum em28xx_amux amux;
 317         enum em28xx_aout aout;
 318         struct em28xx_reg_seq *gpio;
 319 };
 320
 321 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 322
 323 enum em28xx_decoder {
 324         EM28XX_NODECODER,
 325         EM28XX_TVP5150,
 326         EM28XX_SAA711X,
 327 };
 328
 329 struct em28xx_board {
 330         char *name;
 331         int vchannels;
 332         int tuner_type;
 333         int tuner_addr;
 334
 335         /* i2c flags */
 336         unsigned int tda9887_conf;
 337
 338         struct em28xx_reg_seq *dvb_gpio;
 339         struct em28xx_reg_seq *suspend_gpio;
 340
 341         unsigned int is_em2800:1;
 342         unsigned int has_msp34xx:1;
 343         unsigned int mts_firmware:1;
 344         unsigned int max_range_640_480:1;
 345         unsigned int has_dvb:1;
 346         unsigned int has_snapshot_button:1;
 347         unsigned int valid:1;
 348
 349         unsigned char xclk, i2c_speed;
 350
 351         enum em28xx_decoder decoder;
 352
 353         struct em28xx_input       input[MAX_EM28XX_INPUT];
 354         struct em28xx_input       radio;
 355         IR_KEYTAB_TYPE            *ir_codes;
 356 };
 357
 358 struct em28xx_eeprom {
 359         u32 id;                 /* 0x9567eb1a */
 360         u16 vendor_ID;
 361         u16 product_ID;
 362
 363         u16 chip_conf;
 364
 365         u16 board_conf;
 366
 367         u16 string1, string2, string3;
 368
 369         u8 string_idx_table;
 370 };
 371
 372 /* device states */
 373 enum em28xx_dev_state {
 374         DEV_INITIALIZED = 0x01,
 375         DEV_DISCONNECTED = 0x02,
 376         DEV_MISCONFIGURED = 0x04,
 377 };
 378
 379 #define EM28XX_AUDIO_BUFS 5
 380 #define EM28XX_NUM_AUDIO_PACKETS 64
 381 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 382 #define EM28XX_CAPTURE_STREAM_EN 1
 383
 384 /* em28xx extensions */
 385 #define EM28XX_AUDIO   0x10
 386 #define EM28XX_DVB     0x20
 387
 388 struct em28xx_audio {
 389         char name[50];
 390         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 391         struct urb *urb[EM28XX_AUDIO_BUFS];
 392         struct usb_device *udev;
 393         unsigned int capture_transfer_done;
 394         struct snd_pcm_substream   *capture_pcm_substream;
 395
 396         unsigned int hwptr_done_capture;
 397         struct snd_card            *sndcard;
 398
 399         int users, shutdown;
 400         enum em28xx_stream_state capture_stream;
 401         spinlock_t slock;
 402 };
 403
 404 struct em28xx;
 405
 406 struct em28xx_fh {
 407         struct em28xx *dev;
 408         unsigned int  stream_on:1;      /* Locks streams */
 409         int           radio;
 410
 411         struct videobuf_queue        vb_vidq;
 412
 413         enum v4l2_buf_type           type;
 414 };
 415
 416 /* main device struct */
 417 struct em28xx {
 418         /* generic device properties */
 419         char name[30];          /* name (including minor) of the device */
 420         int model;              /* index in the device_data struct */
 421         int devno;              /* marks the number of this device */
 422         enum em28xx_chip_id chip_id;
 423
 424         struct em28xx_board board;
 425
 426         unsigned int stream_on:1;       /* Locks streams */
 427         unsigned int has_audio_class:1;
 428         unsigned int has_alsa_audio:1;
 429
 430         struct em28xx_IR *ir;
 431
 432         /* Some older em28xx chips needs a waiting time after writing */
 433         unsigned int wait_after_write;
 434
 435         /* GPIO sequences for tuner callbacks */
 436         struct em28xx_reg_seq *tuner_gpio;
 437
 438         struct list_head        devlist;
 439
 440         u32 i2s_speed;          /* I2S speed for audio digital stream */
 441
 442         struct em28xx_audio_mode audio_mode;
 443
 444         int tuner_type;         /* type of the tuner */
 445         int tuner_addr;         /* tuner address */
 446         int tda9887_conf;
 447         /* i2c i/o */
 448         struct i2c_adapter i2c_adap;
 449         struct i2c_client i2c_client;
 450         /* video for linux */
 451         int users;              /* user count for exclusive use */
 452         struct video_device *vdev;      /* video for linux device struct */
 453         v4l2_std_id norm;       /* selected tv norm */
 454         int ctl_freq;           /* selected frequency */
 455         unsigned int ctl_input; /* selected input */
 456         unsigned int ctl_ainput;/* selected audio input */
 457         unsigned int ctl_aoutput;/* selected audio output */
 458         int mute;
 459         int volume;
 460         /* frame properties */
 461         int width;              /* current frame width */
 462         int height;             /* current frame height */
 463         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 464         unsigned vscale;        /* vertical scale factor (see datasheet) */
 465         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 466         unsigned int video_bytesread;   /* Number of bytes read */
 467
 468         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 469         unsigned long i2c_hash; /* i2c devicelist hash -
 470                                    for boards with generic ID */
 471
 472         struct em28xx_audio *adev;
 473
 474         /* states */
 475         enum em28xx_dev_state state;
 476         enum em28xx_io_method io;
 477
 478         struct work_struct         request_module_wk;
 479
 480         /* locks */
 481         struct mutex lock;
 482         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 483         /* spinlock_t queue_lock; */
 484         struct list_head inqueue, outqueue;
 485         wait_queue_head_t open, wait_frame, wait_stream;
 486         struct video_device *vbi_dev;
 487         struct video_device *radio_dev;
 488
 489         unsigned char eedata[256];
 490
 491         /* Isoc control struct */
 492         struct em28xx_dmaqueue vidq;
 493         struct em28xx_usb_isoc_ctl isoc_ctl;
 494         spinlock_t slock;
 495
 496         /* usb transfer */
 497         struct usb_device *udev;        /* the usb device */
 498         int alt;                /* alternate */
 499         int max_pkt_size;       /* max packet size of isoc transaction */
 500         int num_alt;            /* Number of alternative settings */
 501         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 502         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 503         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
 504         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 505
 506         /* helper funcs that call usb_control_msg */
 507         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 508                                         char *buf, int len);
 509         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 510         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 511                                         char *buf, int len);
 512         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 513                                       char *buf, int len);
 514         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 515
 516         enum em28xx_mode mode;
 517
 518         /* register numbers for GPO/GPIO registers */
 519         u16 reg_gpo_num, reg_gpio_num;
 520
 521         /* Caches GPO and GPIO registers */
 522         unsigned char   reg_gpo, reg_gpio;
 523
 524         /* Snapshot button */
 525         char snapshot_button_path[30];  /* path of the input dev */
 526         struct input_dev *sbutton_input_dev;
 527         struct delayed_work sbutton_query_work;
 528
 529         struct em28xx_dvb *dvb;
 530 };
 531
 532 struct em28xx_ops {
 533         struct list_head next;
 534         char *name;
 535         int id;
 536         int (*init)(struct em28xx *);
 537         int (*fini)(struct em28xx *);
 538 };
 539
 540 /* Provided by em28xx-i2c.c */
 541
 542 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
 543 void em28xx_do_i2c_scan(struct em28xx *dev);
 544 int em28xx_i2c_register(struct em28xx *dev);
 545 int em28xx_i2c_unregister(struct em28xx *dev);
 546
 547 /* Provided by em28xx-core.c */
 548
 549 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 550 void em28xx_queue_unusedframes(struct em28xx *dev);
 551 void em28xx_release_buffers(struct em28xx *dev);
 552
 553 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 554                             char *buf, int len);
 555 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 556 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 557 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 558                           int len);
 559 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 560 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 561
 562 int em28xx_audio_analog_set(struct em28xx *dev);
 563 int em28xx_audio_setup(struct em28xx *dev);
 564
 565 int em28xx_colorlevels_set_default(struct em28xx *dev);
 566 int em28xx_capture_start(struct em28xx *dev, int start);
 567 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
 568 int em28xx_resolution_set(struct em28xx *dev);
 569 int em28xx_set_alternate(struct em28xx *dev);
 570 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 571                      int num_bufs, int max_pkt_size,
 572                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 573 void em28xx_uninit_isoc(struct em28xx *dev);
 574 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 575 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 576
 577 /* Provided by em28xx-video.c */
 578 int em28xx_register_extension(struct em28xx_ops *dev);
 579 void em28xx_unregister_extension(struct em28xx_ops *dev);
 580
 581 /* Provided by em28xx-cards.c */
 582 extern int em2800_variant_detect(struct usb_device *udev, int model);
 583 extern void em28xx_pre_card_setup(struct em28xx *dev);
 584 extern void em28xx_card_setup(struct em28xx *dev);
 585 extern struct em28xx_board em28xx_boards[];
 586 extern struct usb_device_id em28xx_id_table[];
 587 extern const unsigned int em28xx_bcount;
 588 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 589 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 590
 591 /* Provided by em28xx-input.c */
 592 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 593 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 594 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 595                                      u32 *ir_raw);
 596 void em28xx_register_snapshot_button(struct em28xx *dev);
 597 void em28xx_deregister_snapshot_button(struct em28xx *dev);
 598
 599 int em28xx_ir_init(struct em28xx *dev);
 600 int em28xx_ir_fini(struct em28xx *dev);
 601
 602 /* printk macros */
 603
 604 #define em28xx_err(fmt, arg...) do {\
 605         printk(KERN_ERR fmt , ##arg); } while (0)
 606
 607 #define em28xx_errdev(fmt, arg...) do {\
 608         printk(KERN_ERR "%s: "fmt,\
 609                         dev->name , ##arg); } while (0)
 610
 611 #define em28xx_info(fmt, arg...) do {\
 612         printk(KERN_INFO "%s: "fmt,\
 613                         dev->name , ##arg); } while (0)
 614 #define em28xx_warn(fmt, arg...) do {\
 615         printk(KERN_WARNING "%s: "fmt,\
 616                         dev->name , ##arg); } while (0)
 617
 618 static inline int em28xx_compression_disable(struct em28xx *dev)
 619 {
 620         /* side effect of disabling scaler and mixer */
 621         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 622 }
 623
 624 static inline int em28xx_contrast_get(struct em28xx *dev)
 625 {
 626         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 627 }
 628
 629 static inline int em28xx_brightness_get(struct em28xx *dev)
 630 {
 631         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 632 }
 633
 634 static inline int em28xx_saturation_get(struct em28xx *dev)
 635 {
 636         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 637 }
 638
 639 static inline int em28xx_u_balance_get(struct em28xx *dev)
 640 {
 641         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 642 }
 643
 644 static inline int em28xx_v_balance_get(struct em28xx *dev)
 645 {
 646         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 647 }
 648
 649 static inline int em28xx_gamma_get(struct em28xx *dev)
 650 {
 651         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 652 }
 653
 654 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 655 {
 656         u8 tmp = (u8) val;
 657         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 658 }
 659
 660 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 661 {
 662         u8 tmp = (u8) val;
 663         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 664 }
 665
 666 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 667 {
 668         u8 tmp = (u8) val;
 669         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 670 }
 671
 672 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 673 {
 674         u8 tmp = (u8) val;
 675         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 676 }
 677
 678 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 679 {
 680         u8 tmp = (u8) val;
 681         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 682 }
 683
 684 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 685 {
 686         u8 tmp = (u8) val;
 687         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 688 }
 689
 690 /*FIXME: maxw should be dependent of alt mode */
 691 static inline unsigned int norm_maxw(struct em28xx *dev)
 692 {
 693         if (dev->board.max_range_640_480)
 694                 return 640;
 695         else
 696                 return 720;
 697 }
 698
 699 static inline unsigned int norm_maxh(struct em28xx *dev)
 700 {
 701         if (dev->board.max_range_640_480)
 702                 return 480;
 703         else
 704                 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 705 }
 706 #endif