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 EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950    16
  58
  59 /* Limits minimum and default number of buffers */
  60 #define EM28XX_MIN_BUF 4
  61 #define EM28XX_DEF_BUF 8
  62
  63 /* maximum number of em28xx boards */
  64 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
  65
  66 /* maximum number of frames that can be queued */
  67 #define EM28XX_NUM_FRAMES 5
  68 /* number of frames that get used for v4l2_read() */
  69 #define EM28XX_NUM_READ_FRAMES 2
  70
  71 /* number of buffers for isoc transfers */
  72 #define EM28XX_NUM_BUFS 5
  73
  74 /* number of packets for each buffer
  75    windows requests only 40 packets .. so we better do the same
  76    this is what I found out for all alternate numbers there!
  77  */
  78 #define EM28XX_NUM_PACKETS 40
  79
  80 /* default alternate; 0 means choose the best */
  81 #define EM28XX_PINOUT 0
  82
  83 #define EM28XX_INTERLACED_DEFAULT 1
  84
  85 /*
  86 #define (use usbview if you want to get the other alternate number infos)
  87 #define
  88 #define alternate number 2
  89 #define                         Endpoint Address: 82
  90                         Direction: in
  91                         Attribute: 1
  92                         Type: Isoc
  93                         Max Packet Size: 1448
  94                         Interval: 125us
  95
  96   alternate number 7
  97
  98                         Endpoint Address: 82
  99                         Direction: in
 100                         Attribute: 1
 101                         Type: Isoc
 102                         Max Packet Size: 3072
 103                         Interval: 125us
 104 */
 105
 106 /* time to wait when stopping the isoc transfer */
 107 #define EM28XX_URB_TIMEOUT       msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
 108
 109 /* time in msecs to wait for i2c writes to finish */
 110 #define EM2800_I2C_WRITE_TIMEOUT 20
 111
 112 enum em28xx_mode {
 113         EM28XX_MODE_UNDEFINED,
 114         EM28XX_ANALOG_MODE,
 115         EM28XX_DIGITAL_MODE,
 116 };
 117
 118 enum em28xx_stream_state {
 119         STREAM_OFF,
 120         STREAM_INTERRUPT,
 121         STREAM_ON,
 122 };
 123
 124 struct em28xx;
 125
 126 struct em28xx_usb_isoc_ctl {
 127                 /* max packet size of isoc transaction */
 128         int                             max_pkt_size;
 129
 130                 /* number of allocated urbs */
 131         int                             num_bufs;
 132
 133                 /* urb for isoc transfers */
 134         struct urb                      **urb;
 135
 136                 /* transfer buffers for isoc transfer */
 137         char                            **transfer_buffer;
 138
 139                 /* Last buffer command and region */
 140         u8                              cmd;
 141         int                             pos, size, pktsize;
 142
 143                 /* Last field: ODD or EVEN? */
 144         int                             field;
 145
 146                 /* Stores incomplete commands */
 147         u32                             tmp_buf;
 148         int                             tmp_buf_len;
 149
 150                 /* Stores already requested buffers */
 151         struct em28xx_buffer            *buf;
 152
 153                 /* Stores the number of received fields */
 154         int                             nfields;
 155
 156                 /* isoc urb callback */
 157         int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
 158
 159 };
 160
 161 struct em28xx_fmt {
 162         char  *name;
 163         u32   fourcc;          /* v4l2 format id */
 164 };
 165
 166 /* buffer for one video frame */
 167 struct em28xx_buffer {
 168         /* common v4l buffer stuff -- must be first */
 169         struct videobuf_buffer vb;
 170
 171         struct list_head frame;
 172         int top_field;
 173         int receiving;
 174 };
 175
 176 struct em28xx_dmaqueue {
 177         struct list_head       active;
 178         struct list_head       queued;
 179
 180         wait_queue_head_t          wq;
 181
 182         /* Counters to control buffer fill */
 183         int                        pos;
 184 };
 185
 186 /* io methods */
 187 enum em28xx_io_method {
 188         IO_NONE,
 189         IO_READ,
 190         IO_MMAP,
 191 };
 192
 193 /* inputs */
 194
 195 #define MAX_EM28XX_INPUT 4
 196 enum enum28xx_itype {
 197         EM28XX_VMUX_COMPOSITE1 = 1,
 198         EM28XX_VMUX_COMPOSITE2,
 199         EM28XX_VMUX_COMPOSITE3,
 200         EM28XX_VMUX_COMPOSITE4,
 201         EM28XX_VMUX_SVIDEO,
 202         EM28XX_VMUX_TELEVISION,
 203         EM28XX_VMUX_CABLE,
 204         EM28XX_VMUX_DVB,
 205         EM28XX_VMUX_DEBUG,
 206         EM28XX_RADIO,
 207 };
 208
 209 enum em28xx_amux {
 210         EM28XX_AMUX_VIDEO,
 211         EM28XX_AMUX_LINE_IN,
 212         EM28XX_AMUX_AC97_VIDEO,
 213         EM28XX_AMUX_AC97_LINE_IN,
 214 };
 215
 216 struct em28xx_input {
 217         enum enum28xx_itype type;
 218         unsigned int vmux;
 219         enum em28xx_amux amux;
 220 };
 221
 222 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
 223
 224 enum em28xx_decoder {
 225         EM28XX_TVP5150,
 226         EM28XX_SAA7113,
 227         EM28XX_SAA7114
 228 };
 229
 230 struct em28xx_reg_seq {
 231         int reg;
 232         unsigned char val, mask;
 233         int sleep;
 234 };
 235
 236 struct em28xx_board {
 237         char *name;
 238         int vchannels;
 239         int tuner_type;
 240
 241         /* i2c flags */
 242         unsigned int tda9887_conf;
 243
 244         unsigned int is_em2800:1;
 245         unsigned int has_msp34xx:1;
 246         unsigned int mts_firmware:1;
 247         unsigned int has_12mhz_i2s:1;
 248         unsigned int max_range_640_480:1;
 249         unsigned int has_dvb:1;
 250
 251         enum em28xx_decoder decoder;
 252
 253         struct em28xx_input       input[MAX_EM28XX_INPUT];
 254         struct em28xx_input       radio;
 255 };
 256
 257 struct em28xx_eeprom {
 258         u32 id;                 /* 0x9567eb1a */
 259         u16 vendor_ID;
 260         u16 product_ID;
 261
 262         u16 chip_conf;
 263
 264         u16 board_conf;
 265
 266         u16 string1, string2, string3;
 267
 268         u8 string_idx_table;
 269 };
 270
 271 /* device states */
 272 enum em28xx_dev_state {
 273         DEV_INITIALIZED = 0x01,
 274         DEV_DISCONNECTED = 0x02,
 275         DEV_MISCONFIGURED = 0x04,
 276 };
 277
 278 #define EM28XX_AUDIO_BUFS 5
 279 #define EM28XX_NUM_AUDIO_PACKETS 64
 280 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
 281 #define EM28XX_CAPTURE_STREAM_EN 1
 282
 283 /* em28xx extensions */
 284 #define EM28XX_AUDIO   0x10
 285 #define EM28XX_DVB     0x20
 286
 287 struct em28xx_audio {
 288         char name[50];
 289         char *transfer_buffer[EM28XX_AUDIO_BUFS];
 290         struct urb *urb[EM28XX_AUDIO_BUFS];
 291         struct usb_device *udev;
 292         unsigned int capture_transfer_done;
 293         struct snd_pcm_substream   *capture_pcm_substream;
 294
 295         unsigned int hwptr_done_capture;
 296         struct snd_card            *sndcard;
 297
 298         int users, shutdown;
 299         enum em28xx_stream_state capture_stream;
 300         spinlock_t slock;
 301 };
 302
 303 struct em28xx;
 304
 305 struct em28xx_fh {
 306         struct em28xx *dev;
 307         unsigned int  stream_on:1;      /* Locks streams */
 308         int           radio;
 309
 310         struct videobuf_queue        vb_vidq;
 311
 312         enum v4l2_buf_type           type;
 313 };
 314
 315 /* main device struct */
 316 struct em28xx {
 317         /* generic device properties */
 318         char name[30];          /* name (including minor) of the device */
 319         int model;              /* index in the device_data struct */
 320         int devno;              /* marks the number of this device */
 321         unsigned int is_em2800:1;
 322         unsigned int has_msp34xx:1;
 323         unsigned int has_tda9887:1;
 324         unsigned int stream_on:1;       /* Locks streams */
 325         unsigned int has_audio_class:1;
 326         unsigned int has_12mhz_i2s:1;
 327         unsigned int max_range_640_480:1;
 328         unsigned int has_dvb:1;
 329
 330         /* Some older em28xx chips needs a waiting time after writing */
 331         unsigned int wait_after_write;
 332
 333         /* GPIO sequences for analog and digital mode */
 334         struct em28xx_reg_seq *analog_gpio, *digital_gpio;
 335
 336         /* GPIO sequences for tuner callbacks */
 337         struct em28xx_reg_seq *tun_analog_gpio, *tun_digital_gpio;
 338
 339         int video_inputs;       /* number of video inputs */
 340         struct list_head        devlist;
 341
 342         u32 i2s_speed;          /* I2S speed for audio digital stream */
 343
 344         enum em28xx_decoder decoder;
 345
 346         int tuner_type;         /* type of the tuner */
 347         int tuner_addr;         /* tuner address */
 348         int tda9887_conf;
 349         /* i2c i/o */
 350         struct i2c_adapter i2c_adap;
 351         struct i2c_client i2c_client;
 352         /* video for linux */
 353         int users;              /* user count for exclusive use */
 354         struct video_device *vdev;      /* video for linux device struct */
 355         v4l2_std_id norm;       /* selected tv norm */
 356         int ctl_freq;           /* selected frequency */
 357         unsigned int ctl_input; /* selected input */
 358         unsigned int ctl_ainput;        /* slected audio input */
 359         int mute;
 360         int volume;
 361         /* frame properties */
 362         int width;              /* current frame width */
 363         int height;             /* current frame height */
 364         int hscale;             /* horizontal scale factor (see datasheet) */
 365         int vscale;             /* vertical scale factor (see datasheet) */
 366         int interlaced;         /* 1=interlace fileds, 0=just top fileds */
 367         unsigned int video_bytesread;   /* Number of bytes read */
 368
 369         unsigned long hash;     /* eeprom hash - for boards with generic ID */
 370         unsigned long i2c_hash; /* i2c devicelist hash -
 371                                    for boards with generic ID */
 372
 373         struct em28xx_audio *adev;
 374
 375         /* states */
 376         enum em28xx_dev_state state;
 377         enum em28xx_io_method io;
 378
 379         struct work_struct         request_module_wk;
 380
 381         /* locks */
 382         struct mutex lock;
 383         /* spinlock_t queue_lock; */
 384         struct list_head inqueue, outqueue;
 385         wait_queue_head_t open, wait_frame, wait_stream;
 386         struct video_device *vbi_dev;
 387         struct video_device *radio_dev;
 388
 389         unsigned char eedata[256];
 390
 391         /* Isoc control struct */
 392         struct em28xx_dmaqueue vidq;
 393         struct em28xx_usb_isoc_ctl isoc_ctl;
 394         spinlock_t slock;
 395
 396         /* usb transfer */
 397         struct usb_device *udev;        /* the usb device */
 398         int alt;                /* alternate */
 399         int max_pkt_size;       /* max packet size of isoc transaction */
 400         int num_alt;            /* Number of alternative settings */
 401         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 402         struct urb *urb[EM28XX_NUM_BUFS];       /* urb for isoc transfers */
 403         char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
 404         /* helper funcs that call usb_control_msg */
 405         int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
 406                                         char *buf, int len);
 407         int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
 408         int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
 409                                         char *buf, int len);
 410         int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
 411                                       char *buf, int len);
 412         int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
 413
 414         enum em28xx_mode mode;
 415
 416         /* Caches GPO and GPIO registers */
 417         unsigned char   reg_gpo, reg_gpio;
 418
 419         struct em28xx_dvb *dvb;
 420 };
 421
 422 struct em28xx_ops {
 423         struct list_head next;
 424         char *name;
 425         int id;
 426         int (*init)(struct em28xx *);
 427         int (*fini)(struct em28xx *);
 428 };
 429
 430 /* Provided by em28xx-i2c.c */
 431
 432 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
 433 void em28xx_do_i2c_scan(struct em28xx *dev);
 434 int em28xx_i2c_register(struct em28xx *dev);
 435 int em28xx_i2c_unregister(struct em28xx *dev);
 436
 437 /* Provided by em28xx-core.c */
 438
 439 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
 440 void em28xx_queue_unusedframes(struct em28xx *dev);
 441 void em28xx_release_buffers(struct em28xx *dev);
 442
 443 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
 444                             char *buf, int len);
 445 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
 446 int em28xx_read_reg(struct em28xx *dev, u16 reg);
 447 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
 448                           int len);
 449 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
 450 int em28xx_audio_analog_set(struct em28xx *dev);
 451
 452 int em28xx_colorlevels_set_default(struct em28xx *dev);
 453 int em28xx_capture_start(struct em28xx *dev, int start);
 454 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
 455 int em28xx_resolution_set(struct em28xx *dev);
 456 int em28xx_set_alternate(struct em28xx *dev);
 457 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
 458                      int num_bufs, int max_pkt_size,
 459                      int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
 460 void em28xx_uninit_isoc(struct em28xx *dev);
 461 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
 462 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
 463
 464 /* Provided by em28xx-video.c */
 465 int em28xx_register_extension(struct em28xx_ops *dev);
 466 void em28xx_unregister_extension(struct em28xx_ops *dev);
 467
 468 /* Provided by em28xx-cards.c */
 469 extern int em2800_variant_detect(struct usb_device *udev, int model);
 470 extern void em28xx_pre_card_setup(struct em28xx *dev);
 471 extern void em28xx_card_setup(struct em28xx *dev);
 472 extern struct em28xx_board em28xx_boards[];
 473 extern struct usb_device_id em28xx_id_table[];
 474 extern const unsigned int em28xx_bcount;
 475 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
 476 int em28xx_tuner_callback(void *ptr, int command, int arg);
 477
 478 /* Provided by em28xx-input.c */
 479 /* TODO: Check if the standard get_key handlers on ir-common can be used */
 480 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 481 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
 482 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
 483                                      u32 *ir_raw);
 484
 485 /* printk macros */
 486
 487 #define em28xx_err(fmt, arg...) do {\
 488         printk(KERN_ERR fmt , ##arg); } while (0)
 489
 490 #define em28xx_errdev(fmt, arg...) do {\
 491         printk(KERN_ERR "%s: "fmt,\
 492                         dev->name , ##arg); } while (0)
 493
 494 #define em28xx_info(fmt, arg...) do {\
 495         printk(KERN_INFO "%s: "fmt,\
 496                         dev->name , ##arg); } while (0)
 497 #define em28xx_warn(fmt, arg...) do {\
 498         printk(KERN_WARNING "%s: "fmt,\
 499                         dev->name , ##arg); } while (0)
 500
 501 static inline int em28xx_compression_disable(struct em28xx *dev)
 502 {
 503         /* side effect of disabling scaler and mixer */
 504         return em28xx_write_regs(dev, EM28XX_R26_COMPR, "\x00", 1);
 505 }
 506
 507 static inline int em28xx_contrast_get(struct em28xx *dev)
 508 {
 509         return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
 510 }
 511
 512 static inline int em28xx_brightness_get(struct em28xx *dev)
 513 {
 514         return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
 515 }
 516
 517 static inline int em28xx_saturation_get(struct em28xx *dev)
 518 {
 519         return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
 520 }
 521
 522 static inline int em28xx_u_balance_get(struct em28xx *dev)
 523 {
 524         return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
 525 }
 526
 527 static inline int em28xx_v_balance_get(struct em28xx *dev)
 528 {
 529         return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
 530 }
 531
 532 static inline int em28xx_gamma_get(struct em28xx *dev)
 533 {
 534         return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
 535 }
 536
 537 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
 538 {
 539         u8 tmp = (u8) val;
 540         return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
 541 }
 542
 543 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
 544 {
 545         u8 tmp = (u8) val;
 546         return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
 547 }
 548
 549 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
 550 {
 551         u8 tmp = (u8) val;
 552         return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
 553 }
 554
 555 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
 556 {
 557         u8 tmp = (u8) val;
 558         return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
 559 }
 560
 561 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
 562 {
 563         u8 tmp = (u8) val;
 564         return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
 565 }
 566
 567 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
 568 {
 569         u8 tmp = (u8) val;
 570         return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
 571 }
 572
 573 /*FIXME: maxw should be dependent of alt mode */
 574 static inline unsigned int norm_maxw(struct em28xx *dev)
 575 {
 576         if (dev->max_range_640_480)
 577                 return 640;
 578         else
 579                 return 720;
 580 }
 581
 582 static inline unsigned int norm_maxh(struct em28xx *dev)
 583 {
 584         if (dev->max_range_640_480)
 585                 return 480;
 586         else
 587                 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;
 588 }
 589 #endif