drivers/media/usb/em28xx/em28xx.h

   1 /*
   2    em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
   3
   4    Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
   5                       Ludovico Cavedon <cavedon@sssup.it>
   6                       Mauro Carvalho Chehab <mchehab@infradead.org>
   7    Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
   8
   9    Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #ifndef _EM28XX_H
  27 #define _EM28XX_H
  28
  29 #include <linux/workqueue.h>
  30 #include <linux/i2c.h>
  31 #include <linux/mutex.h>
  32 #include <linux/videodev2.h>
  33
  34 #include <media/videobuf2-vmalloc.h>
  35 #include <media/v4l2-device.h>
  36 #include <media/v4l2-ctrls.h>
  37 #include <media/v4l2-fh.h>
  38 #include <media/ir-kbd-i2c.h>
  39 #include <media/rc-core.h>
  40 #include "tuner-xc2028.h"
  41 #include "xc5000.h"
  42 #include "em28xx-reg.h"
  43
  44 /* Boards supported by driver */
  45 #define EM2800_BOARD_UNKNOWN                      0
  46 #define EM2820_BOARD_UNKNOWN                      1
  47 #define EM2820_BOARD_TERRATEC_CINERGY_250         2
  48 #define EM2820_BOARD_PINNACLE_USB_2               3
  49 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2        4
  50 #define EM2820_BOARD_MSI_VOX_USB_2                5
  51 #define EM2800_BOARD_TERRATEC_CINERGY_200         6
  52 #define EM2800_BOARD_LEADTEK_WINFAST_USBII        7
  53 #define EM2800_BOARD_KWORLD_USB2800               8
  54 #define EM2820_BOARD_PINNACLE_DVC_90              9
  55 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900      10
  56 #define EM2880_BOARD_TERRATEC_HYBRID_XS           11
  57 #define EM2820_BOARD_KWORLD_PVRTV2800RF           12
  58 #define EM2880_BOARD_TERRATEC_PRODIGY_XS          13
  59 #define EM2820_BOARD_PROLINK_PLAYTV_USB2          14
  60 #define EM2800_BOARD_VGEAR_POCKETTV               15
  61 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950      16
  62 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO         17
  63 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2   18
  64 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN     19
  65 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600     20
  66 #define EM2800_BOARD_GRABBEEX_USB2800             21
  67 #define EM2750_BOARD_UNKNOWN                      22
  68 #define EM2750_BOARD_DLCW_130                     23
  69 #define EM2820_BOARD_DLINK_USB_TV                 24
  70 #define EM2820_BOARD_GADMEI_UTV310                25
  71 #define EM2820_BOARD_HERCULES_SMART_TV_USB2       26
  72 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME      27
  73 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
  74 #define EM2860_BOARD_TVP5150_REFERENCE_DESIGN     29
  75 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB          30
  76 #define EM2821_BOARD_USBGEAR_VD204                31
  77 #define EM2821_BOARD_SUPERCOMP_USB_2              32
  78 #define EM2860_BOARD_ELGATO_VIDEO_CAPTURE         33
  79 #define EM2860_BOARD_TERRATEC_HYBRID_XS           34
  80 #define EM2860_BOARD_TYPHOON_DVD_MAKER            35
  81 #define EM2860_BOARD_NETGMBH_CAM                  36
  82 #define EM2860_BOARD_GADMEI_UTV330                37
  83 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER           38
  84 #define EM2861_BOARD_KWORLD_PVRTV_300U            39
  85 #define EM2861_BOARD_PLEXTOR_PX_TV100U            40
  86 #define EM2870_BOARD_KWORLD_350U                  41
  87 #define EM2870_BOARD_KWORLD_355U                  42
  88 #define EM2870_BOARD_TERRATEC_XS                  43
  89 #define EM2870_BOARD_TERRATEC_XS_MT2060           44
  90 #define EM2870_BOARD_PINNACLE_PCTV_DVB            45
  91 #define EM2870_BOARD_COMPRO_VIDEOMATE             46
  92 #define EM2880_BOARD_KWORLD_DVB_305U              47
  93 #define EM2880_BOARD_KWORLD_DVB_310U              48
  94 #define EM2880_BOARD_MSI_DIGIVOX_AD               49
  95 #define EM2880_BOARD_MSI_DIGIVOX_AD_II            50
  96 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR        51
  97 #define EM2881_BOARD_DNT_DA2_HYBRID               52
  98 #define EM2881_BOARD_PINNACLE_HYBRID_PRO          53
  99 #define EM2882_BOARD_KWORLD_VS_DVBT               54
 100 #define EM2882_BOARD_TERRATEC_HYBRID_XS           55
 101 #define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E     56
 102 #define EM2883_BOARD_KWORLD_HYBRID_330U           57
 103 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU      58
 104 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850      60
 105 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2     61
 106 #define EM2820_BOARD_GADMEI_TVR200                62
 107 #define EM2860_BOARD_KAIOMY_TVNPC_U2              63
 108 #define EM2860_BOARD_EASYCAP                      64
 109 #define EM2820_BOARD_IODATA_GVMVP_SZ              65
 110 #define EM2880_BOARD_EMPIRE_DUAL_TV               66
 111 #define EM2860_BOARD_TERRATEC_GRABBY              67
 112 #define EM2860_BOARD_TERRATEC_AV350               68
 113 #define EM2882_BOARD_KWORLD_ATSC_315U             69
 114 #define EM2882_BOARD_EVGA_INDTUBE                 70
 115 #define EM2820_BOARD_SILVERCREST_WEBCAM           71
 116 #define EM2861_BOARD_GADMEI_UTV330PLUS            72
 117 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX          73
 118 #define EM2800_BOARD_VC211A                       74
 119 #define EM2882_BOARD_DIKOM_DK300                  75
 120 #define EM2870_BOARD_KWORLD_A340                  76
 121 #define EM2874_BOARD_LEADERSHIP_ISDBT             77
 122 #define EM28174_BOARD_PCTV_290E                   78
 123 #define EM2884_BOARD_TERRATEC_H5                  79
 124 #define EM28174_BOARD_PCTV_460E                   80
 125 #define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C     81
 126 #define EM2884_BOARD_CINERGY_HTC_STICK            82
 127 #define EM2860_BOARD_HT_VIDBOX_NW03               83
 128 #define EM2874_BOARD_MAXMEDIA_UB425_TC            84
 129 #define EM2884_BOARD_PCTV_510E                    85
 130 #define EM2884_BOARD_PCTV_520E                    86
 131 #define EM2884_BOARD_TERRATEC_HTC_USB_XS          87
 132 #define EM2884_BOARD_C3TECH_DIGITAL_DUO           88
 133 #define EM2874_BOARD_DELOCK_61959                 89
 134 #define EM2874_BOARD_KWORLD_UB435Q_V2             90
 135 #define EM2765_BOARD_SPEEDLINK_VAD_LAPLACE        91
 136 #define EM28178_BOARD_PCTV_461E                   92
 137
 138 /* Limits minimum and default number of buffers */
 139 #define EM28XX_MIN_BUF 4
 140 #define EM28XX_DEF_BUF 8
 141
 142 /*Limits the max URB message size */
 143 #define URB_MAX_CTRL_SIZE 80
 144
 145 /* Params for validated field */
 146 #define EM28XX_BOARD_NOT_VALIDATED 1
 147 #define EM28XX_BOARD_VALIDATED     0
 148
 149 /* Params for em28xx_cmd() audio */
 150 #define EM28XX_START_AUDIO      1
 151 #define EM28XX_STOP_AUDIO       0
 152
 153 /* maximum number of em28xx boards */
 154 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
 155
 156 /* maximum number of frames that can be queued */
 157 #define EM28XX_NUM_FRAMES 5
 158 /* number of frames that get used for v4l2_read() */
 159 #define EM28XX_NUM_READ_FRAMES 2
 160
 161 /* number of buffers for isoc transfers */
 162 #define EM28XX_NUM_BUFS 5
 163 #define EM28XX_DVB_NUM_BUFS 5
 164
 165 /* max number of I2C buses on em28xx devices */
 166 #define NUM_I2C_BUSES   2
 167
 168 /* isoc transfers: number of packets for each buffer
 169    windows requests only 64 packets .. so we better do the same
 170    this is what I found out for all alternate numbers there!
 171  */
 172 #define EM28XX_NUM_ISOC_PACKETS 64
 173 #define EM28XX_DVB_NUM_ISOC_PACKETS 64
 174
 175 /* bulk transfers: transfer buffer size = packet size * packet multiplier
 176    USB 2.0 spec says bulk packet size is always 512 bytes
 177  */
 178 #define EM28XX_BULK_PACKET_MULTIPLIER 384
 179 #define EM28XX_DVB_BULK_PACKET_MULTIPLIER 384
 180
 181 #define EM28XX_INTERLACED_DEFAULT 1
 182
 183 /* time in msecs to wait for i2c writes to finish */
 184 #define EM2800_I2C_XFER_TIMEOUT         20
 185
 186 /* max. number of button state polling addresses */
 187 #define EM28XX_NUM_BUTTON_ADDRESSES_MAX         5
 188
 189 enum em28xx_mode {
 190         EM28XX_SUSPEND,
 191         EM28XX_ANALOG_MODE,
 192         EM28XX_DIGITAL_MODE,
 193 };
 194
 195
 196 struct em28xx;
 197
 198 struct em28xx_usb_bufs {
 199                 /* max packet size of isoc transaction */
 200         int                             max_pkt_size;
 201
 202                 /* number of packets in each buffer */
 203         int                             num_packets;
 204
 205                 /* number of allocated urbs */
 206         int                             num_bufs;
 207
 208                 /* urb for isoc/bulk transfers */
 209         struct urb                      **urb;
 210
 211                 /* transfer buffers for isoc/bulk transfer */
 212         char                            **transfer_buffer;
 213 };
 214
 215 struct em28xx_usb_ctl {
 216                 /* isoc/bulk transfer buffers for analog mode */
 217         struct em28xx_usb_bufs          analog_bufs;
 218
 219                 /* isoc/bulk transfer buffers for digital mode */
 220         struct em28xx_usb_bufs          digital_bufs;
 221
 222                 /* Stores already requested buffers */
 223         struct em28xx_buffer            *vid_buf;
 224         struct em28xx_buffer            *vbi_buf;
 225
 226                 /* copy data from URB */
 227         int (*urb_data_copy) (struct em28xx *dev, struct urb *urb);
 228
 229 };
 230
 231 /* Struct to enumberate video formats */
 232 struct em28xx_fmt {
 233         char  *name;
 234         u32   fourcc;          /* v4l2 format id */
 235         int   depth;
 236         int   reg;
 237 };
 238
 239 /* buffer for one video frame */
 240 struct em28xx_buffer {
 241         /* common v4l buffer stuff -- must be first */
 242         struct vb2_buffer vb;
 243         struct list_head list;
 244
 245         void *mem;
 246         unsigned int length;
 247         int top_field;
 248
 249         /* counter to control buffer fill */
 250         unsigned int pos;
 251         /* NOTE; in interlaced mode, this value is reset to zero at
 252          * the start of each new field (not frame !)               */
 253
 254         /* pointer to vmalloc memory address in vb */
 255         char *vb_buf;
 256 };
 257
 258 struct em28xx_dmaqueue {
 259         struct list_head       active;
 260
 261         wait_queue_head_t          wq;
 262 };
 263
 264 /* inputs */
 265
 266 #define MAX_EM28XX_INPUT 4
 267 enum enum28xx_itype {
 268         EM28XX_VMUX_COMPOSITE1 = 1,
 269         EM28XX_VMUX_COMPOSITE2,
 270         EM28XX_VMUX_COMPOSITE3,
 271         EM28XX_VMUX_COMPOSITE4,
 272         EM28XX_VMUX_SVIDEO,
 273         EM28XX_VMUX_TELEVISION,
 274         EM28XX_VMUX_CABLE,
 275         EM28XX_VMUX_DVB,
 276         EM28XX_VMUX_DEBUG,
 277         EM28XX_RADIO,
 278 };
 279
 280 enum em28xx_ac97_mode {
 281         EM28XX_NO_AC97 = 0,
 282         EM28XX_AC97_EM202,
 283         EM28XX_AC97_SIGMATEL,
 284         EM28XX_AC97_OTHER,
 285 };
 286
 287 struct em28xx_audio_mode {
 288         enum em28xx_ac97_mode ac97;
 289
 290         u16 ac97_feat;
 291         u32 ac97_vendor_id;
 292
 293         unsigned int has_audio:1;
 294
 295         unsigned int i2s_3rates:1;
 296         unsigned int i2s_5rates:1;
 297 };
 298
 299 /* em28xx has two audio inputs: tuner and line in.
 300    However, on most devices, an auxiliary AC97 codec device is used.
 301    The AC97 device may have several different inputs and outputs,
 302    depending on their model. So, it is possible to use AC97 mixer to
 303    address more than two different entries.
 304  */
 305 enum em28xx_amux {
 306         /* This is the only entry for em28xx tuner input */
 307         EM28XX_AMUX_VIDEO,      /* em28xx tuner, AC97 mixer Video */
 308
 309         EM28XX_AMUX_LINE_IN,    /* AC97 mixer Line In */
 310
 311         /* Some less-common mixer setups */
 312         EM28XX_AMUX_VIDEO2,     /* em28xx Line in, AC97 mixer Video */
 313         EM28XX_AMUX_PHONE,
 314         EM28XX_AMUX_MIC,
 315         EM28XX_AMUX_CD,
 316         EM28XX_AMUX_AUX,
 317         EM28XX_AMUX_PCM_OUT,
 318 };
 319
 320 enum em28xx_aout {
 321         /* AC97 outputs */
 322         EM28XX_AOUT_MASTER = 1 << 0,
 323         EM28XX_AOUT_LINE   = 1 << 1,
 324         EM28XX_AOUT_MONO   = 1 << 2,
 325         EM28XX_AOUT_LFE    = 1 << 3,
 326         EM28XX_AOUT_SURR   = 1 << 4,
 327
 328         /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
 329         EM28XX_AOUT_PCM_IN = 1 << 7,
 330
 331         /* Bits 10-8 are used to indicate the PCM IN record select */
 332         EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
 333         EM28XX_AOUT_PCM_CD      = 1 << 8,
 334         EM28XX_AOUT_PCM_VIDEO   = 2 << 8,
 335         EM28XX_AOUT_PCM_AUX     = 3 << 8,
 336         EM28XX_AOUT_PCM_LINE    = 4 << 8,
 337         EM28XX_AOUT_PCM_STEREO  = 5 << 8,
 338         EM28XX_AOUT_PCM_MONO    = 6 << 8,
 339         EM28XX_AOUT_PCM_PHONE   = 7 << 8,
 340 };
 341
 342 static inline int ac97_return_record_select(int a_out)
 343 {
 344         return (a_out & 0x700) >> 8;
 345 }
 346
 347 struct em28xx_reg_seq {
 348         int reg;
 349         unsigned char val, mask;
 350         int sleep;
 351 };
 352
 353 struct em28xx_input {
 354         enum enum28xx_itype type;
 355         unsigned int vmux;
 356         enum em28xx_amux amux;
 357         enum em28xx_aout aout;
 358         struct em28xx_reg_seq *gpio;
 359 };
 360
 361 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 362
 363 enum em28xx_decoder {
 364         EM28XX_NODECODER = 0,
 365         EM28XX_TVP5150,
 366         EM28XX_SAA711X,
 367 };
 368
 369 enum em28xx_sensor {
 370         EM28XX_NOSENSOR = 0,
 371         EM28XX_MT9V011,
 372         EM28XX_MT9M001,
 373         EM28XX_MT9M111,
 374         EM28XX_OV2640,
 375 };
 376
 377 enum em28xx_adecoder {
 378         EM28XX_NOADECODER = 0,
 379         EM28XX_TVAUDIO,
 380 };
 381
 382 enum em28xx_led_role {
 383         EM28XX_LED_ANALOG_CAPTURING = 0,
 384         EM28XX_LED_ILLUMINATION,
 385         EM28XX_NUM_LED_ROLES, /* must be the last */
 386 };
 387
 388 struct em28xx_led {
 389         enum em28xx_led_role role;
 390         u8 gpio_reg;
 391         u8 gpio_mask;
 392         bool inverted;
 393 };
 394
 395 enum em28xx_button_role {
 396         EM28XX_BUTTON_SNAPSHOT = 0,
 397         EM28XX_BUTTON_ILLUMINATION,
 398         EM28XX_NUM_BUTTON_ROLES, /* must be the last */
 399 };
 400
 401 struct em28xx_button {
 402         enum em28xx_button_role role;
 403         u8 reg_r;
 404         u8 reg_clearing;
 405         u8 mask;
 406         bool inverted;
 407 };
 408
 409 struct em28xx_board {
 410         char *name;
 411         int vchannels;
 412         int tuner_type;
 413         int tuner_addr;
 414         unsigned def_i2c_bus;   /* Default I2C bus */
 415
 416         /* i2c flags */
 417         unsigned int tda9887_conf;
 418
 419         /* GPIO sequences */
 420         struct em28xx_reg_seq *dvb_gpio;
 421         struct em28xx_reg_seq *suspend_gpio;
 422         struct em28xx_reg_seq *tuner_gpio;
 423         struct em28xx_reg_seq *mute_gpio;
 424
 425         unsigned int is_em2800:1;
 426         unsigned int has_msp34xx:1;
 427         unsigned int mts_firmware:1;
 428         unsigned int max_range_640_480:1;
 429         unsigned int has_dvb:1;
 430         unsigned int is_webcam:1;
 431         unsigned int valid:1;
 432         unsigned int has_ir_i2c:1;
 433
 434         unsigned char xclk, i2c_speed;
 435         unsigned char radio_addr;
 436         unsigned short tvaudio_addr;
 437
 438         enum em28xx_decoder decoder;
 439         enum em28xx_adecoder adecoder;
 440
 441         struct em28xx_input       input[MAX_EM28XX_INPUT];
 442         struct em28xx_input       radio;
 443         char                      *ir_codes;
 444
 445         /* LEDs that need to be controlled explicitly */
 446         struct em28xx_led         *leds;
 447
 448         /* Buttons */
 449         struct em28xx_button      *buttons;
 450 };
 451
 452 struct em28xx_eeprom {
 453         u8 id[4];                       /* 1a eb 67 95 */
 454         __le16 vendor_ID;
 455         __le16 product_ID;
 456
 457         __le16 chip_conf;
 458
 459         __le16 board_conf;
 460
 461         __le16 string1, string2, string3;
 462
 463         u8 string_idx_table;
 464 };
 465
 466 #define EM28XX_AUDIO_BUFS 5
 467 #define EM28XX_NUM_AUDIO_PACKETS 64
 468 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 469 #define EM28XX_CAPTURE_STREAM_EN 1
 470
 471 /* em28xx extensions */
 472 #define EM28XX_AUDIO   0x10
 473 #define EM28XX_DVB     0x20
 474 #define EM28XX_RC      0x30
 475
 476 /* em28xx resource types (used for res_get/res_lock etc */
 477 #define EM28XX_RESOURCE_VIDEO 0x01
 478 #define EM28XX_RESOURCE_VBI   0x02
 479
 480 struct em28xx_audio {
 481         char name[50];
 482         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 483         struct urb *urb[EM28XX_AUDIO_BUFS];
 484         struct usb_device *udev;
 485         unsigned int capture_transfer_done;
 486         struct snd_pcm_substream   *capture_pcm_substream;
 487
 488         unsigned int hwptr_done_capture;
 489         struct snd_card            *sndcard;
 490
 491         int users;
 492         spinlock_t slock;
 493 };
 494
 495 struct em28xx;
 496
 497 struct em28xx_fh {
 498         struct v4l2_fh fh;
 499         struct em28xx *dev;
 500
 501         enum v4l2_buf_type           type;
 502 };
 503
 504 enum em28xx_i2c_algo_type {
 505         EM28XX_I2C_ALGO_EM28XX = 0,
 506         EM28XX_I2C_ALGO_EM2800,
 507         EM28XX_I2C_ALGO_EM25XX_BUS_B,
 508 };
 509
 510 struct em28xx_i2c_bus {
 511         struct em28xx *dev;
 512
 513         unsigned bus;
 514         enum em28xx_i2c_algo_type algo_type;
 515 };
 516
 517
 518 /* main device struct */
 519 struct em28xx {
 520         /* generic device properties */
 521         char name[30];          /* name (including minor) of the device */
 522         int model;              /* index in the device_data struct */
 523         int devno;              /* marks the number of this device */
 524         enum em28xx_chip_id chip_id;
 525         unsigned int is_em25xx:1;       /* em25xx/em276x/7x/8x family bridge */
 526
 527         unsigned char disconnected:1;   /* device has been diconnected */
 528
 529         int audio_ifnum;
 530
 531         struct v4l2_device v4l2_dev;
 532         struct v4l2_ctrl_handler ctrl_handler;
 533         struct v4l2_clk *clk;
 534         struct em28xx_board board;
 535
 536         /* Webcam specific fields */
 537         enum em28xx_sensor em28xx_sensor;
 538         int sensor_xres, sensor_yres;
 539         int sensor_xtal;
 540
 541         /* Progressive (non-interlaced) mode */
 542         int progressive;
 543
 544         /* Vinmode/Vinctl used at the driver */
 545         int vinmode, vinctl;
 546
 547         unsigned int has_audio_class:1;
 548         unsigned int has_alsa_audio:1;
 549         unsigned int is_audio_only:1;
 550
 551         /* Controls audio streaming */
 552         struct work_struct wq_trigger;  /* Trigger to start/stop audio for alsa module */
 553         atomic_t       stream_started;  /* stream should be running if true */
 554
 555         struct em28xx_fmt *format;
 556
 557         struct em28xx_IR *ir;
 558
 559         /* Some older em28xx chips needs a waiting time after writing */
 560         unsigned int wait_after_write;
 561
 562         struct list_head        devlist;
 563
 564         u32 i2s_speed;          /* I2S speed for audio digital stream */
 565
 566         struct em28xx_audio_mode audio_mode;
 567
 568         int tuner_type;         /* type of the tuner */
 569         int tuner_addr;         /* tuner address */
 570         int tda9887_conf;
 571
 572         /* i2c i/o */
 573         struct i2c_adapter i2c_adap[NUM_I2C_BUSES];
 574         struct i2c_client i2c_client[NUM_I2C_BUSES];
 575         struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
 576
 577         unsigned char eeprom_addrwidth_16bit:1;
 578         unsigned def_i2c_bus;   /* Default I2C bus */
 579         unsigned cur_i2c_bus;   /* Current I2C bus */
 580         struct rt_mutex i2c_bus_lock;
 581
 582         /* video for linux */
 583         int users;              /* user count for exclusive use */
 584         int streaming_users;    /* Number of actively streaming users */
 585         struct video_device *vdev;      /* video for linux device struct */
 586         v4l2_std_id norm;       /* selected tv norm */
 587         int ctl_freq;           /* selected frequency */
 588         unsigned int ctl_input; /* selected input */
 589         unsigned int ctl_ainput;/* selected audio input */
 590         unsigned int ctl_aoutput;/* selected audio output */
 591         int mute;
 592         int volume;
 593         /* frame properties */
 594         int width;              /* current frame width */
 595         int height;             /* current frame height */
 596         unsigned hscale;        /* horizontal scale factor (see datasheet) */
 597         unsigned vscale;        /* vertical scale factor (see datasheet) */
 598         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 599         unsigned int video_bytesread;   /* Number of bytes read */
 600
 601         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 602         unsigned long i2c_hash; /* i2c devicelist hash -
 603                                    for boards with generic ID */
 604
 605         struct em28xx_audio adev;
 606
 607         /* capture state tracking */
 608         int capture_type;
 609         unsigned char top_field:1;
 610         int vbi_read;
 611         unsigned int vbi_width;
 612         unsigned int vbi_height; /* lines per field */
 613
 614         struct work_struct         request_module_wk;
 615
 616         /* locks */
 617         struct mutex lock;
 618         struct mutex ctrl_urb_lock;     /* protects urb_buf */
 619         /* spinlock_t queue_lock; */
 620         struct list_head inqueue, outqueue;
 621         struct video_device *vbi_dev;
 622         struct video_device *radio_dev;
 623
 624         /* Videobuf2 */
 625         struct vb2_queue vb_vidq;
 626         struct vb2_queue vb_vbiq;
 627         struct mutex vb_queue_lock;
 628         struct mutex vb_vbi_queue_lock;
 629
 630         /* resources in use */
 631         unsigned int resources;
 632
 633         /* eeprom content */
 634         u8 *eedata;
 635         u16 eedata_len;
 636
 637         /* Isoc control struct */
 638         struct em28xx_dmaqueue vidq;
 639         struct em28xx_dmaqueue vbiq;
 640         struct em28xx_usb_ctl usb_ctl;
 641         spinlock_t slock;
 642
 643         unsigned int field_count;
 644         unsigned int vbi_field_count;
 645
 646         /* usb transfer */
 647         struct usb_device *udev;        /* the usb device */
 648         u8 analog_ep_isoc;      /* address of isoc endpoint for analog */
 649         u8 analog_ep_bulk;      /* address of bulk endpoint for analog */
 650         u8 dvb_ep_isoc;         /* address of isoc endpoint for DVB */
 651         u8 dvb_ep_bulk;         /* address of bulk endpoint for DVB */
 652         int alt;                /* alternate setting */
 653         int max_pkt_size;       /* max packet size of the selected ep at alt */
 654         int packet_multiplier;  /* multiplier for wMaxPacketSize, used for
 655                                    URB buffer size definition */
 656         int num_alt;            /* number of alternative settings */
 657         unsigned int *alt_max_pkt_size_isoc; /* array of isoc wMaxPacketSize */
 658         unsigned int analog_xfer_bulk:1;        /* use bulk instead of isoc
 659                                                    transfers for analog      */
 660         int dvb_alt_isoc;       /* alternate setting for DVB isoc transfers */
 661         unsigned int dvb_max_pkt_size_isoc;     /* isoc max packet size of the
 662                                                    selected DVB ep at dvb_alt */
 663         unsigned int dvb_xfer_bulk:1;           /* use bulk instead of isoc
 664                                                    transfers for DVB          */
 665         char urb_buf[URB_MAX_CTRL_SIZE];        /* urb control msg buffer */
 666
 667         /* helper funcs that call usb_control_msg */
 668         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 669                                         char *buf, int len);
 670         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 671         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 672                                         char *buf, int len);
 673         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 674                                       char *buf, int len);
 675         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 676
 677         enum em28xx_mode mode;
 678
 679         /* Button state polling */
 680         struct delayed_work buttons_query_work;
 681         u8 button_polling_addresses[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
 682         u8 button_polling_last_values[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
 683         u8 num_button_polling_addresses;
 684         u16 button_polling_interval; /* [ms] */
 685         /* Snapshot button input device */
 686         char snapshot_button_path[30];  /* path of the input dev */
 687         struct input_dev *sbutton_input_dev;
 688
 689         struct em28xx_dvb *dvb;
 690 };
 691
 692 struct em28xx_ops {
 693         struct list_head next;
 694         char *name;
 695         int id;
 696         int (*init)(struct em28xx *);
 697         int (*fini)(struct em28xx *);
 698 };
 699
 700 /* Provided by em28xx-i2c.c */
 701 void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus);
 702 int  em28xx_i2c_register(struct em28xx *dev, unsigned bus,
 703                          enum em28xx_i2c_algo_type algo_type);
 704 int  em28xx_i2c_unregister(struct em28xx *dev, unsigned bus);
 705
 706 /* Provided by em28xx-core.c */
 707 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 708                             char *buf, int len);
 709 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 710 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 711 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 712                           int len);
 713 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 714 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
 715 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
 716                                  u8 bitmask);
 717 int em28xx_toggle_reg_bits(struct em28xx *dev, u16 reg, u8 bitmask);
 718
 719 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
 720 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
 721
 722 int em28xx_audio_analog_set(struct em28xx *dev);
 723 int em28xx_audio_setup(struct em28xx *dev);
 724
 725 int em28xx_colorlevels_set_default(struct em28xx *dev);
 726 const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
 727                                          enum em28xx_led_role role);
 728 int em28xx_capture_start(struct em28xx *dev, int start);
 729 int em28xx_vbi_supported(struct em28xx *dev);
 730 int em28xx_set_outfmt(struct em28xx *dev);
 731 int em28xx_resolution_set(struct em28xx *dev);
 732 int em28xx_set_alternate(struct em28xx *dev);
 733 int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
 734                       int num_bufs, int max_pkt_size, int packet_multiplier);
 735 int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
 736                          int xfer_bulk,
 737                          int num_bufs, int max_pkt_size, int packet_multiplier,
 738                          int (*urb_data_copy)
 739                                         (struct em28xx *dev, struct urb *urb));
 740 void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
 741 void em28xx_stop_urbs(struct em28xx *dev);
 742 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 743 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 744 void em28xx_wake_i2c(struct em28xx *dev);
 745 int em28xx_register_extension(struct em28xx_ops *dev);
 746 void em28xx_unregister_extension(struct em28xx_ops *dev);
 747 void em28xx_init_extension(struct em28xx *dev);
 748 void em28xx_close_extension(struct em28xx *dev);
 749
 750 /* Provided by em28xx-video.c */
 751 int em28xx_vb2_setup(struct em28xx *dev);
 752 int em28xx_register_analog_devices(struct em28xx *dev);
 753 void em28xx_release_analog_resources(struct em28xx *dev);
 754 void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv);
 755 int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
 756 int em28xx_stop_vbi_streaming(struct vb2_queue *vq);
 757 extern const struct v4l2_ctrl_ops em28xx_ctrl_ops;
 758
 759 /* Provided by em28xx-cards.c */
 760 extern struct em28xx_board em28xx_boards[];
 761 extern struct usb_device_id em28xx_id_table[];
 762 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
 763 void em28xx_release_resources(struct em28xx *dev);
 764
 765 /* Provided by em28xx-vbi.c */
 766 extern struct vb2_ops em28xx_vbi_qops;
 767
 768 /* Provided by em28xx-camera.c */
 769 int em28xx_detect_sensor(struct em28xx *dev);
 770 int em28xx_init_camera(struct em28xx *dev);
 771
 772 /* printk macros */
 773
 774 #define em28xx_err(fmt, arg...) do {\
 775         printk(KERN_ERR fmt , ##arg); } while (0)
 776
 777 #define em28xx_errdev(fmt, arg...) do {\
 778         printk(KERN_ERR "%s: "fmt,\
 779                         dev->name , ##arg); } while (0)
 780
 781 #define em28xx_info(fmt, arg...) do {\
 782         printk(KERN_INFO "%s: "fmt,\
 783                         dev->name , ##arg); } while (0)
 784 #define em28xx_warn(fmt, arg...) do {\
 785         printk(KERN_WARNING "%s: "fmt,\
 786                         dev->name , ##arg); } while (0)
 787
 788 static inline int em28xx_compression_disable(struct em28xx *dev)
 789 {
 790         /* side effect of disabling scaler and mixer */
 791         return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
 792 }
 793
 794 /*FIXME: maxw should be dependent of alt mode */
 795 static inline unsigned int norm_maxw(struct em28xx *dev)
 796 {
 797         if (dev->board.is_webcam)
 798                 return dev->sensor_xres;
 799
 800         if (dev->board.max_range_640_480)
 801                 return 640;
 802
 803         return 720;
 804 }
 805
 806 static inline unsigned int norm_maxh(struct em28xx *dev)
 807 {
 808         if (dev->board.is_webcam)
 809                 return dev->sensor_yres;
 810
 811         if (dev->board.max_range_640_480)
 812                 return 480;
 813
 814         return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 815 }
 816 #endif