drivers/media/pci/saa7164/saa7164.h

   1 /*
   2  *  Driver for the NXP SAA7164 PCIe bridge
   3  *
   4  *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 /*
  23         Driver architecture
  24         *******************
  25
  26         saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
  27                 |       : Standard Linux driver framework for creating
  28                 |       : exposing and managing interfaces to the rest
  29                 |       : of the kernel or userland. Also uses _fw.c to load
  30                 |       : firmware direct into the PCIe bus, bypassing layers.
  31                 V
  32         saa7164_api..() : Translate kernel specific functions/features
  33                 |       : into command buffers.
  34                 V
  35         saa7164_cmd..() : Manages the flow of command packets on/off,
  36                 |       : the bus. Deal with bus errors, timeouts etc.
  37                 V
  38         saa7164_bus..() : Manage a read/write memory ring buffer in the
  39                 |       : PCIe Address space.
  40                 |
  41                 |               saa7164_fw...() : Load any frimware
  42                 |                       |       : direct into the device
  43                 V                       V
  44         <- ----------------- PCIe address space -------------------- ->
  45 */
  46
  47 #include <linux/pci.h>
  48 #include <linux/i2c.h>
  49 #include <linux/kdev_t.h>
  50 #include <linux/mutex.h>
  51 #include <linux/crc32.h>
  52 #include <linux/kthread.h>
  53 #include <linux/freezer.h>
  54
  55 #include <media/tuner.h>
  56 #include <media/tveeprom.h>
  57 #include <dvb_demux.h>
  58 #include <dvb_frontend.h>
  59 #include <dvb_net.h>
  60 #include <dvbdev.h>
  61 #include <dmxdev.h>
  62 #include <media/v4l2-common.h>
  63 #include <media/v4l2-ioctl.h>
  64 #include <media/v4l2-device.h>
  65 #include <media/v4l2-ctrls.h>
  66 #include <media/v4l2-event.h>
  67
  68 #include "saa7164-reg.h"
  69 #include "saa7164-types.h"
  70
  71 #define SAA7164_MAXBOARDS 8
  72
  73 #define UNSET (-1U)
  74 #define SAA7164_BOARD_NOAUTO                    UNSET
  75 #define SAA7164_BOARD_UNKNOWN                   0
  76 #define SAA7164_BOARD_UNKNOWN_REV2              1
  77 #define SAA7164_BOARD_UNKNOWN_REV3              2
  78 #define SAA7164_BOARD_HAUPPAUGE_HVR2250         3
  79 #define SAA7164_BOARD_HAUPPAUGE_HVR2200         4
  80 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2       5
  81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3       6
  82 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2       7
  83 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3       8
  84 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4       9
  85 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5       10
  86 #define SAA7164_BOARD_HAUPPAUGE_HVR2255proto    11
  87 #define SAA7164_BOARD_HAUPPAUGE_HVR2255         12
  88 #define SAA7164_BOARD_HAUPPAUGE_HVR2205         13
  89
  90 #define SAA7164_MAX_UNITS               8
  91 #define SAA7164_TS_NUMBER_OF_LINES      312
  92 #define SAA7164_PS_NUMBER_OF_LINES      256
  93 #define SAA7164_PT_ENTRIES              16 /* (312 * 188) / 4096 */
  94 #define SAA7164_MAX_ENCODER_BUFFERS     64 /* max 5secs of latency at 6Mbps */
  95 #define SAA7164_MAX_VBI_BUFFERS         64
  96
  97 /* Port related defines */
  98 #define SAA7164_PORT_TS1        (0)
  99 #define SAA7164_PORT_TS2        (SAA7164_PORT_TS1 + 1)
 100 #define SAA7164_PORT_ENC1       (SAA7164_PORT_TS2 + 1)
 101 #define SAA7164_PORT_ENC2       (SAA7164_PORT_ENC1 + 1)
 102 #define SAA7164_PORT_VBI1       (SAA7164_PORT_ENC2 + 1)
 103 #define SAA7164_PORT_VBI2       (SAA7164_PORT_VBI1 + 1)
 104 #define SAA7164_MAX_PORTS       (SAA7164_PORT_VBI2 + 1)
 105
 106 #define DBGLVL_FW    4
 107 #define DBGLVL_DVB   8
 108 #define DBGLVL_I2C  16
 109 #define DBGLVL_API  32
 110 #define DBGLVL_CMD  64
 111 #define DBGLVL_BUS 128
 112 #define DBGLVL_IRQ 256
 113 #define DBGLVL_BUF 512
 114 #define DBGLVL_ENC 1024
 115 #define DBGLVL_VBI 2048
 116 #define DBGLVL_THR 4096
 117 #define DBGLVL_CPU 8192
 118
 119 #define SAA7164_NORMS \
 120         (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
 121
 122 /* TV frequency range copied from tuner-core.c */
 123 #define SAA7164_TV_MIN_FREQ (44U * 16U)
 124 #define SAA7164_TV_MAX_FREQ (958U * 16U)
 125
 126 enum port_t {
 127         SAA7164_MPEG_UNDEFINED = 0,
 128         SAA7164_MPEG_DVB,
 129         SAA7164_MPEG_ENCODER,
 130         SAA7164_MPEG_VBI,
 131 };
 132
 133 enum saa7164_i2c_bus_nr {
 134         SAA7164_I2C_BUS_0 = 0,
 135         SAA7164_I2C_BUS_1,
 136         SAA7164_I2C_BUS_2,
 137 };
 138
 139 enum saa7164_buffer_flags {
 140         SAA7164_BUFFER_UNDEFINED = 0,
 141         SAA7164_BUFFER_FREE,
 142         SAA7164_BUFFER_BUSY,
 143         SAA7164_BUFFER_FULL
 144 };
 145
 146 enum saa7164_unit_type {
 147         SAA7164_UNIT_UNDEFINED = 0,
 148         SAA7164_UNIT_DIGITAL_DEMODULATOR,
 149         SAA7164_UNIT_ANALOG_DEMODULATOR,
 150         SAA7164_UNIT_TUNER,
 151         SAA7164_UNIT_EEPROM,
 152         SAA7164_UNIT_ZILOG_IRBLASTER,
 153         SAA7164_UNIT_ENCODER,
 154 };
 155
 156 /* The PCIe bridge doesn't grant direct access to i2c.
 157  * Instead, you address i2c devices using a uniqely
 158  * allocated 'unitid' value via a messaging API. This
 159  * is a problem. The kernel and existing demod/tuner
 160  * drivers expect to talk 'i2c', so we have to maintain
 161  * a translation layer, and a series of functions to
 162  * convert i2c bus + device address into a unit id.
 163  */
 164 struct saa7164_unit {
 165         enum saa7164_unit_type type;
 166         u8      id;
 167         char    *name;
 168         enum saa7164_i2c_bus_nr i2c_bus_nr;
 169         u8      i2c_bus_addr;
 170         u8      i2c_reg_len;
 171 };
 172
 173 struct saa7164_board {
 174         char    *name;
 175         enum port_t porta, portb, portc,
 176                 portd, porte, portf;
 177         enum {
 178                 SAA7164_CHIP_UNDEFINED = 0,
 179                 SAA7164_CHIP_REV2,
 180                 SAA7164_CHIP_REV3,
 181         } chiprev;
 182         struct  saa7164_unit unit[SAA7164_MAX_UNITS];
 183 };
 184
 185 struct saa7164_subid {
 186         u16     subvendor;
 187         u16     subdevice;
 188         u32     card;
 189 };
 190
 191 struct saa7164_encoder_fh {
 192         struct v4l2_fh fh;
 193         struct saa7164_port *port;
 194         atomic_t v4l_reading;
 195 };
 196
 197 struct saa7164_vbi_fh {
 198         struct v4l2_fh fh;
 199         struct saa7164_port *port;
 200         atomic_t v4l_reading;
 201 };
 202
 203 struct saa7164_histogram_bucket {
 204         u32 val;
 205         u32 count;
 206         u64 update_time;
 207 };
 208
 209 struct saa7164_histogram {
 210         char name[32];
 211         struct saa7164_histogram_bucket counter1[64];
 212 };
 213
 214 struct saa7164_user_buffer {
 215         struct list_head list;
 216
 217         /* Attributes */
 218         u8  *data;
 219         u32 pos;
 220         u32 actual_size;
 221
 222         u32 crc;
 223 };
 224
 225 struct saa7164_fw_status {
 226
 227         /* RISC Core details */
 228         u32     status;
 229         u32     mode;
 230         u32     spec;
 231         u32     inst;
 232         u32     cpuload;
 233         u32     remainheap;
 234
 235         /* Firmware version */
 236         u32     version;
 237         u32     major;
 238         u32     sub;
 239         u32     rel;
 240         u32     buildnr;
 241 };
 242
 243 struct saa7164_dvb {
 244         struct mutex lock;
 245         struct dvb_adapter adapter;
 246         struct dvb_frontend *frontend;
 247         struct dvb_demux demux;
 248         struct dmxdev dmxdev;
 249         struct dmx_frontend fe_hw;
 250         struct dmx_frontend fe_mem;
 251         struct dvb_net net;
 252         int feeding;
 253 };
 254
 255 struct saa7164_i2c {
 256         struct saa7164_dev              *dev;
 257
 258         enum saa7164_i2c_bus_nr         nr;
 259
 260         /* I2C I/O */
 261         struct i2c_adapter              i2c_adap;
 262         struct i2c_client               i2c_client;
 263         u32                             i2c_rc;
 264 };
 265
 266 struct saa7164_tvnorm {
 267         char            *name;
 268         v4l2_std_id     id;
 269 };
 270
 271 struct saa7164_encoder_params {
 272         struct saa7164_tvnorm encodernorm;
 273         u32 height;
 274         u32 width;
 275         u32 is_50hz;
 276         u32 bitrate; /* bps */
 277         u32 bitrate_peak; /* bps */
 278         u32 bitrate_mode;
 279         u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
 280
 281         u32 audio_sampling_freq;
 282         u32 ctl_mute;
 283         u32 ctl_aspect;
 284         u32 refdist;
 285         u32 gop_size;
 286 };
 287
 288 struct saa7164_vbi_params {
 289         struct saa7164_tvnorm encodernorm;
 290         u32 height;
 291         u32 width;
 292         u32 is_50hz;
 293         u32 bitrate; /* bps */
 294         u32 bitrate_peak; /* bps */
 295         u32 bitrate_mode;
 296         u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
 297
 298         u32 audio_sampling_freq;
 299         u32 ctl_mute;
 300         u32 ctl_aspect;
 301         u32 refdist;
 302         u32 gop_size;
 303 };
 304
 305 struct saa7164_port;
 306
 307 struct saa7164_buffer {
 308         struct list_head list;
 309
 310         /* Note of which h/w buffer list index position we occupy */
 311         int idx;
 312
 313         struct saa7164_port *port;
 314
 315         /* Hardware Specific */
 316         /* PCI Memory allocations */
 317         enum saa7164_buffer_flags flags; /* Free, Busy, Full */
 318
 319         /* A block of page align PCI memory */
 320         u32 pci_size;   /* PCI allocation size in bytes */
 321         u64 *cpu;       /* Virtual address */
 322         dma_addr_t dma; /* Physical address */
 323         u32 crc;        /* Checksum for the entire buffer data */
 324
 325         /* A page table that splits the block into a number of entries */
 326         u32 pt_size;            /* PCI allocation size in bytes */
 327         u64 *pt_cpu;            /* Virtual address */
 328         dma_addr_t pt_dma;      /* Physical address */
 329
 330         /* Encoder fops */
 331         u32 pos;
 332         u32 actual_size;
 333 };
 334
 335 struct saa7164_port {
 336
 337         struct saa7164_dev *dev;
 338         enum port_t type;
 339         int nr;
 340
 341         /* --- Generic port attributes --- */
 342
 343         /* HW stream parameters */
 344         struct tmHWStreamParameters hw_streamingparams;
 345
 346         /* DMA configuration values, is seeded during initialization */
 347         struct tmComResDMATermDescrHeader hwcfg;
 348
 349         /* hardware specific registers */
 350         u32 bufcounter;
 351         u32 pitch;
 352         u32 bufsize;
 353         u32 bufoffset;
 354         u32 bufptr32l;
 355         u32 bufptr32h;
 356         u64 bufptr64;
 357
 358         u32 numpte;     /* Number of entries in array, only valid in head */
 359
 360         struct mutex dmaqueue_lock;
 361         struct saa7164_buffer dmaqueue;
 362
 363         u64 last_irq_msecs, last_svc_msecs;
 364         u64 last_irq_msecs_diff, last_svc_msecs_diff;
 365         u32 last_svc_wp;
 366         u32 last_svc_rp;
 367         u64 last_irq_svc_msecs_diff;
 368         u64 last_read_msecs, last_read_msecs_diff;
 369         u64 last_poll_msecs, last_poll_msecs_diff;
 370
 371         struct saa7164_histogram irq_interval;
 372         struct saa7164_histogram svc_interval;
 373         struct saa7164_histogram irq_svc_interval;
 374         struct saa7164_histogram read_interval;
 375         struct saa7164_histogram poll_interval;
 376
 377         /* --- DVB Transport Specific --- */
 378         struct saa7164_dvb dvb;
 379         struct i2c_client *i2c_client_demod;
 380         struct i2c_client *i2c_client_tuner;
 381
 382         /* --- Encoder/V4L related attributes --- */
 383         /* Encoder */
 384         /* Defaults established in saa7164-encoder.c */
 385         struct saa7164_tvnorm encodernorm;
 386         struct v4l2_ctrl_handler ctrl_handler;
 387         v4l2_std_id std;
 388         u32 height;
 389         u32 width;
 390         u32 freq;
 391         u8 mux_input;
 392         u8 encoder_profile;
 393         u8 video_format;
 394         u8 audio_format;
 395         u8 video_resolution;
 396         u16 ctl_brightness;
 397         u16 ctl_contrast;
 398         u16 ctl_hue;
 399         u16 ctl_saturation;
 400         u16 ctl_sharpness;
 401         s8 ctl_volume;
 402
 403         struct tmComResAFeatureDescrHeader audfeat;
 404         struct tmComResEncoderDescrHeader encunit;
 405         struct tmComResProcDescrHeader vidproc;
 406         struct tmComResExtDevDescrHeader ifunit;
 407         struct tmComResTunerDescrHeader tunerunit;
 408
 409         struct work_struct workenc;
 410
 411         /* V4L Encoder Video */
 412         struct saa7164_encoder_params encoder_params;
 413         struct video_device *v4l_device;
 414         atomic_t v4l_reader_count;
 415
 416         struct saa7164_buffer list_buf_used;
 417         struct saa7164_buffer list_buf_free;
 418         wait_queue_head_t wait_read;
 419
 420         /* V4L VBI */
 421         struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
 422         struct saa7164_vbi_params vbi_params;
 423         struct saa7164_port *enc_port;
 424
 425         /* Debug */
 426         u32 sync_errors;
 427         u32 v_cc_errors;
 428         u32 a_cc_errors;
 429         u8 last_v_cc;
 430         u8 last_a_cc;
 431         u32 done_first_interrupt;
 432 };
 433
 434 struct saa7164_dev {
 435         struct list_head        devlist;
 436         atomic_t                refcount;
 437
 438         struct v4l2_device v4l2_dev;
 439
 440         /* pci stuff */
 441         struct pci_dev  *pci;
 442         unsigned char   pci_rev, pci_lat;
 443         int             pci_bus, pci_slot;
 444         u32             __iomem *lmmio;
 445         u8              __iomem *bmmio;
 446         u32             __iomem *lmmio2;
 447         u8              __iomem *bmmio2;
 448         int             pci_irqmask;
 449
 450         /* board details */
 451         int     nr;
 452         int     hwrevision;
 453         u32     board;
 454         char    name[16];
 455
 456         /* firmware status */
 457         struct saa7164_fw_status        fw_status;
 458         u32                             firmwareloaded;
 459
 460         struct tmComResHWDescr          hwdesc;
 461         struct tmComResInterfaceDescr   intfdesc;
 462         struct tmComResBusDescr         busdesc;
 463
 464         struct tmComResBusInfo          bus;
 465
 466         /* Interrupt status and ack registers */
 467         u32 int_status;
 468         u32 int_ack;
 469         bool msi;
 470
 471         struct cmd                      cmds[SAA_CMD_MAX_MSG_UNITS];
 472         struct mutex                    lock;
 473
 474         /* I2c related */
 475         struct saa7164_i2c i2c_bus[3];
 476
 477         /* Transport related */
 478         struct saa7164_port ports[SAA7164_MAX_PORTS];
 479
 480         /* Deferred command/api interrupts handling */
 481         struct work_struct workcmd;
 482
 483         /* A kernel thread to monitor the firmware log, used
 484          * only in debug mode.
 485          */
 486         struct task_struct *kthread;
 487
 488 };
 489
 490 extern struct list_head saa7164_devlist;
 491 extern unsigned int waitsecs;
 492 extern unsigned int encoder_buffers;
 493 extern unsigned int vbi_buffers;
 494
 495 /* ----------------------------------------------------------- */
 496 /* saa7164-core.c                                              */
 497 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
 498 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
 499 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
 500 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
 501
 502 /* ----------------------------------------------------------- */
 503 /* saa7164-fw.c                                                */
 504 int saa7164_downloadfirmware(struct saa7164_dev *dev);
 505
 506 /* ----------------------------------------------------------- */
 507 /* saa7164-i2c.c                                               */
 508 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
 509 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
 510 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
 511         unsigned int cmd, void *arg);
 512
 513 /* ----------------------------------------------------------- */
 514 /* saa7164-bus.c                                               */
 515 int saa7164_bus_setup(struct saa7164_dev *dev);
 516 void saa7164_bus_dump(struct saa7164_dev *dev);
 517 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
 518         void *buf);
 519 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
 520         void *buf, int peekonly);
 521
 522 /* ----------------------------------------------------------- */
 523 /* saa7164-cmd.c                                               */
 524 int saa7164_cmd_send(struct saa7164_dev *dev,
 525         u8 id, enum tmComResCmd command, u16 controlselector,
 526         u16 size, void *buf);
 527 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
 528 int saa7164_irq_dequeue(struct saa7164_dev *dev);
 529
 530 /* ----------------------------------------------------------- */
 531 /* saa7164-api.c                                               */
 532 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
 533 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
 534 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
 535         u32 datalen, u8 *data);
 536 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
 537         u32 datalen, u8 *data);
 538 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
 539         u32 datalen, u8 *data);
 540 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
 541 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
 542 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
 543 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
 544 int saa7164_api_initialize_dif(struct saa7164_port *port);
 545 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
 546 int saa7164_api_set_encoder(struct saa7164_port *port);
 547 int saa7164_api_get_encoder(struct saa7164_port *port);
 548 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
 549 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
 550 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
 551 int saa7164_api_set_videomux(struct saa7164_port *port);
 552 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
 553 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
 554 int saa7164_api_set_audio_std(struct saa7164_port *port);
 555 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
 556 int saa7164_api_get_videomux(struct saa7164_port *port);
 557 int saa7164_api_set_vbi_format(struct saa7164_port *port);
 558 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
 559 int saa7164_api_collect_debug(struct saa7164_dev *dev);
 560 int saa7164_api_get_load_info(struct saa7164_dev *dev,
 561         struct tmFwInfoStruct *i);
 562
 563 /* ----------------------------------------------------------- */
 564 /* saa7164-cards.c                                             */
 565 extern struct saa7164_board saa7164_boards[];
 566 extern const unsigned int saa7164_bcount;
 567
 568 extern struct saa7164_subid saa7164_subids[];
 569 extern const unsigned int saa7164_idcount;
 570
 571 extern void saa7164_card_list(struct saa7164_dev *dev);
 572 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
 573 extern void saa7164_card_setup(struct saa7164_dev *dev);
 574
 575 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
 576 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
 577 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
 578
 579 /* ----------------------------------------------------------- */
 580 /* saa7164-dvb.c                                               */
 581 extern int saa7164_dvb_register(struct saa7164_port *port);
 582 extern int saa7164_dvb_unregister(struct saa7164_port *port);
 583
 584 /* ----------------------------------------------------------- */
 585 /* saa7164-buffer.c                                            */
 586 extern struct saa7164_buffer *saa7164_buffer_alloc(
 587         struct saa7164_port *port, u32 len);
 588 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
 589 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
 590 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
 591 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
 592 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
 593         struct saa7164_dev *dev, u32 len);
 594 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
 595 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
 596
 597 /* ----------------------------------------------------------- */
 598 /* saa7164-encoder.c                                            */
 599 int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
 600 int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
 601 int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
 602 int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
 603 int saa7164_s_input(struct saa7164_port *port, unsigned int i);
 604 int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
 605 int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
 606 int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
 607 int saa7164_s_frequency(struct saa7164_port *port,
 608                         const struct v4l2_frequency *f);
 609 int saa7164_encoder_register(struct saa7164_port *port);
 610 void saa7164_encoder_unregister(struct saa7164_port *port);
 611
 612 /* ----------------------------------------------------------- */
 613 /* saa7164-vbi.c                                            */
 614 int saa7164_vbi_register(struct saa7164_port *port);
 615 void saa7164_vbi_unregister(struct saa7164_port *port);
 616
 617 /* ----------------------------------------------------------- */
 618
 619 extern unsigned int crc_checking;
 620
 621 extern unsigned int saa_debug;
 622 #define dprintk(level, fmt, arg...)\
 623         do { if (saa_debug & level)\
 624                 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
 625         } while (0)
 626
 627 #define log_warn(fmt, arg...)\
 628         do { \
 629                 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
 630         } while (0)
 631
 632 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
 633 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
 634
 635 #define saa7164_readb(reg)             readl(dev->bmmio + (reg))
 636 #define saa7164_writeb(reg, value)     writel((value), dev->bmmio + (reg))
 637