drivers/media/pci/saa7164/saa7164.h

   1 /*
   2  *  Driver for the NXP SAA7164 PCIe bridge
   3  *
   4  *  Copyright (c) 2010 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 <media/videobuf-dma-sg.h>
  58 #include <media/videobuf-dvb.h>
  59 #include <dvb_demux.h>
  60 #include <dvb_frontend.h>
  61 #include <dvb_net.h>
  62 #include <dvbdev.h>
  63 #include <dmxdev.h>
  64 #include <media/v4l2-common.h>
  65 #include <media/v4l2-ioctl.h>
  66 #include <media/v4l2-chip-ident.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
  87 #define SAA7164_MAX_UNITS               8
  88 #define SAA7164_TS_NUMBER_OF_LINES      312
  89 #define SAA7164_PS_NUMBER_OF_LINES      256
  90 #define SAA7164_PT_ENTRIES              16 /* (312 * 188) / 4096 */
  91 #define SAA7164_MAX_ENCODER_BUFFERS     64 /* max 5secs of latency at 6Mbps */
  92 #define SAA7164_MAX_VBI_BUFFERS         64
  93
  94 /* Port related defines */
  95 #define SAA7164_PORT_TS1        (0)
  96 #define SAA7164_PORT_TS2        (SAA7164_PORT_TS1 + 1)
  97 #define SAA7164_PORT_ENC1       (SAA7164_PORT_TS2 + 1)
  98 #define SAA7164_PORT_ENC2       (SAA7164_PORT_ENC1 + 1)
  99 #define SAA7164_PORT_VBI1       (SAA7164_PORT_ENC2 + 1)
 100 #define SAA7164_PORT_VBI2       (SAA7164_PORT_VBI1 + 1)
 101 #define SAA7164_MAX_PORTS       (SAA7164_PORT_VBI2 + 1)
 102
 103 #define DBGLVL_FW    4
 104 #define DBGLVL_DVB   8
 105 #define DBGLVL_I2C  16
 106 #define DBGLVL_API  32
 107 #define DBGLVL_CMD  64
 108 #define DBGLVL_BUS 128
 109 #define DBGLVL_IRQ 256
 110 #define DBGLVL_BUF 512
 111 #define DBGLVL_ENC 1024
 112 #define DBGLVL_VBI 2048
 113 #define DBGLVL_THR 4096
 114 #define DBGLVL_CPU 8192
 115
 116 #define SAA7164_NORMS \
 117         (V4L2_STD_NTSC_M |  V4L2_STD_NTSC_M_JP |  V4L2_STD_NTSC_443)
 118
 119 enum port_t {
 120         SAA7164_MPEG_UNDEFINED = 0,
 121         SAA7164_MPEG_DVB,
 122         SAA7164_MPEG_ENCODER,
 123         SAA7164_MPEG_VBI,
 124 };
 125
 126 enum saa7164_i2c_bus_nr {
 127         SAA7164_I2C_BUS_0 = 0,
 128         SAA7164_I2C_BUS_1,
 129         SAA7164_I2C_BUS_2,
 130 };
 131
 132 enum saa7164_buffer_flags {
 133         SAA7164_BUFFER_UNDEFINED = 0,
 134         SAA7164_BUFFER_FREE,
 135         SAA7164_BUFFER_BUSY,
 136         SAA7164_BUFFER_FULL
 137 };
 138
 139 enum saa7164_unit_type {
 140         SAA7164_UNIT_UNDEFINED = 0,
 141         SAA7164_UNIT_DIGITAL_DEMODULATOR,
 142         SAA7164_UNIT_ANALOG_DEMODULATOR,
 143         SAA7164_UNIT_TUNER,
 144         SAA7164_UNIT_EEPROM,
 145         SAA7164_UNIT_ZILOG_IRBLASTER,
 146         SAA7164_UNIT_ENCODER,
 147 };
 148
 149 /* The PCIe bridge doesn't grant direct access to i2c.
 150  * Instead, you address i2c devices using a uniqely
 151  * allocated 'unitid' value via a messaging API. This
 152  * is a problem. The kernel and existing demod/tuner
 153  * drivers expect to talk 'i2c', so we have to maintain
 154  * a translation layer, and a series of functions to
 155  * convert i2c bus + device address into a unit id.
 156  */
 157 struct saa7164_unit {
 158         enum saa7164_unit_type type;
 159         u8      id;
 160         char    *name;
 161         enum saa7164_i2c_bus_nr i2c_bus_nr;
 162         u8      i2c_bus_addr;
 163         u8      i2c_reg_len;
 164 };
 165
 166 struct saa7164_board {
 167         char    *name;
 168         enum port_t porta, portb, portc,
 169                 portd, porte, portf;
 170         enum {
 171                 SAA7164_CHIP_UNDEFINED = 0,
 172                 SAA7164_CHIP_REV2,
 173                 SAA7164_CHIP_REV3,
 174         } chiprev;
 175         struct  saa7164_unit unit[SAA7164_MAX_UNITS];
 176 };
 177
 178 struct saa7164_subid {
 179         u16     subvendor;
 180         u16     subdevice;
 181         u32     card;
 182 };
 183
 184 struct saa7164_encoder_fh {
 185         struct saa7164_port *port;
 186         atomic_t v4l_reading;
 187 };
 188
 189 struct saa7164_vbi_fh {
 190         struct saa7164_port *port;
 191         atomic_t v4l_reading;
 192 };
 193
 194 struct saa7164_histogram_bucket {
 195         u32 val;
 196         u32 count;
 197         u64 update_time;
 198 };
 199
 200 struct saa7164_histogram {
 201         char name[32];
 202         struct saa7164_histogram_bucket counter1[64];
 203 };
 204
 205 struct saa7164_user_buffer {
 206         struct list_head list;
 207
 208         /* Attributes */
 209         u8  *data;
 210         u32 pos;
 211         u32 actual_size;
 212
 213         u32 crc;
 214 };
 215
 216 struct saa7164_fw_status {
 217
 218         /* RISC Core details */
 219         u32     status;
 220         u32     mode;
 221         u32     spec;
 222         u32     inst;
 223         u32     cpuload;
 224         u32     remainheap;
 225
 226         /* Firmware version */
 227         u32     version;
 228         u32     major;
 229         u32     sub;
 230         u32     rel;
 231         u32     buildnr;
 232 };
 233
 234 struct saa7164_dvb {
 235         struct mutex lock;
 236         struct dvb_adapter adapter;
 237         struct dvb_frontend *frontend;
 238         struct dvb_demux demux;
 239         struct dmxdev dmxdev;
 240         struct dmx_frontend fe_hw;
 241         struct dmx_frontend fe_mem;
 242         struct dvb_net net;
 243         int feeding;
 244 };
 245
 246 struct saa7164_i2c {
 247         struct saa7164_dev              *dev;
 248
 249         enum saa7164_i2c_bus_nr         nr;
 250
 251         /* I2C I/O */
 252         struct i2c_adapter              i2c_adap;
 253         struct i2c_client               i2c_client;
 254         u32                             i2c_rc;
 255 };
 256
 257 struct saa7164_ctrl {
 258         struct v4l2_queryctrl v;
 259 };
 260
 261 struct saa7164_tvnorm {
 262         char            *name;
 263         v4l2_std_id     id;
 264 };
 265
 266 struct saa7164_encoder_params {
 267         struct saa7164_tvnorm encodernorm;
 268         u32 height;
 269         u32 width;
 270         u32 is_50hz;
 271         u32 bitrate; /* bps */
 272         u32 bitrate_peak; /* bps */
 273         u32 bitrate_mode;
 274         u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
 275
 276         u32 audio_sampling_freq;
 277         u32 ctl_mute;
 278         u32 ctl_aspect;
 279         u32 refdist;
 280         u32 gop_size;
 281 };
 282
 283 struct saa7164_vbi_params {
 284         struct saa7164_tvnorm encodernorm;
 285         u32 height;
 286         u32 width;
 287         u32 is_50hz;
 288         u32 bitrate; /* bps */
 289         u32 bitrate_peak; /* bps */
 290         u32 bitrate_mode;
 291         u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
 292
 293         u32 audio_sampling_freq;
 294         u32 ctl_mute;
 295         u32 ctl_aspect;
 296         u32 refdist;
 297         u32 gop_size;
 298 };
 299
 300 struct saa7164_port;
 301
 302 struct saa7164_buffer {
 303         struct list_head list;
 304
 305         /* Note of which h/w buffer list index position we occupy */
 306         int idx;
 307
 308         struct saa7164_port *port;
 309
 310         /* Hardware Specific */
 311         /* PCI Memory allocations */
 312         enum saa7164_buffer_flags flags; /* Free, Busy, Full */
 313
 314         /* A block of page align PCI memory */
 315         u32 pci_size;   /* PCI allocation size in bytes */
 316         u64 __iomem *cpu;       /* Virtual address */
 317         dma_addr_t dma; /* Physical address */
 318         u32 crc;        /* Checksum for the entire buffer data */
 319
 320         /* A page table that splits the block into a number of entries */
 321         u32 pt_size;            /* PCI allocation size in bytes */
 322         u64 __iomem *pt_cpu;            /* Virtual address */
 323         dma_addr_t pt_dma;      /* Physical address */
 324
 325         /* Encoder fops */
 326         u32 pos;
 327         u32 actual_size;
 328 };
 329
 330 struct saa7164_port {
 331
 332         struct saa7164_dev *dev;
 333         enum port_t type;
 334         int nr;
 335
 336         /* --- Generic port attributes --- */
 337
 338         /* HW stream parameters */
 339         struct tmHWStreamParameters hw_streamingparams;
 340
 341         /* DMA configuration values, is seeded during initialization */
 342         struct tmComResDMATermDescrHeader hwcfg;
 343
 344         /* hardware specific registers */
 345         u32 bufcounter;
 346         u32 pitch;
 347         u32 bufsize;
 348         u32 bufoffset;
 349         u32 bufptr32l;
 350         u32 bufptr32h;
 351         u64 bufptr64;
 352
 353         u32 numpte;     /* Number of entries in array, only valid in head */
 354
 355         struct mutex dmaqueue_lock;
 356         struct saa7164_buffer dmaqueue;
 357
 358         u64 last_irq_msecs, last_svc_msecs;
 359         u64 last_irq_msecs_diff, last_svc_msecs_diff;
 360         u32 last_svc_wp;
 361         u32 last_svc_rp;
 362         u64 last_irq_svc_msecs_diff;
 363         u64 last_read_msecs, last_read_msecs_diff;
 364         u64 last_poll_msecs, last_poll_msecs_diff;
 365
 366         struct saa7164_histogram irq_interval;
 367         struct saa7164_histogram svc_interval;
 368         struct saa7164_histogram irq_svc_interval;
 369         struct saa7164_histogram read_interval;
 370         struct saa7164_histogram poll_interval;
 371
 372         /* --- DVB Transport Specific --- */
 373         struct saa7164_dvb dvb;
 374
 375         /* --- Encoder/V4L related attributes --- */
 376         /* Encoder */
 377         /* Defaults established in saa7164-encoder.c */
 378         struct saa7164_tvnorm encodernorm;
 379         u32 height;
 380         u32 width;
 381         u32 freq;
 382         u32 ts_packet_size;
 383         u32 ts_packet_count;
 384         u8 mux_input;
 385         u8 encoder_profile;
 386         u8 video_format;
 387         u8 audio_format;
 388         u8 video_resolution;
 389         u16 ctl_brightness;
 390         u16 ctl_contrast;
 391         u16 ctl_hue;
 392         u16 ctl_saturation;
 393         u16 ctl_sharpness;
 394         s8 ctl_volume;
 395
 396         struct tmComResAFeatureDescrHeader audfeat;
 397         struct tmComResEncoderDescrHeader encunit;
 398         struct tmComResProcDescrHeader vidproc;
 399         struct tmComResExtDevDescrHeader ifunit;
 400         struct tmComResTunerDescrHeader tunerunit;
 401
 402         struct work_struct workenc;
 403
 404         /* V4L Encoder Video */
 405         struct saa7164_encoder_params encoder_params;
 406         struct video_device *v4l_device;
 407         atomic_t v4l_reader_count;
 408
 409         struct saa7164_buffer list_buf_used;
 410         struct saa7164_buffer list_buf_free;
 411         wait_queue_head_t wait_read;
 412
 413         /* V4L VBI */
 414         struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
 415         struct saa7164_vbi_params vbi_params;
 416
 417         /* Debug */
 418         u32 sync_errors;
 419         u32 v_cc_errors;
 420         u32 a_cc_errors;
 421         u8 last_v_cc;
 422         u8 last_a_cc;
 423         u32 done_first_interrupt;
 424 };
 425
 426 struct saa7164_dev {
 427         struct list_head        devlist;
 428         atomic_t                refcount;
 429
 430         /* pci stuff */
 431         struct pci_dev  *pci;
 432         unsigned char   pci_rev, pci_lat;
 433         int             pci_bus, pci_slot;
 434         u32             __iomem *lmmio;
 435         u8              __iomem *bmmio;
 436         u32             __iomem *lmmio2;
 437         u8              __iomem *bmmio2;
 438         int             pci_irqmask;
 439
 440         /* board details */
 441         int     nr;
 442         int     hwrevision;
 443         u32     board;
 444         char    name[16];
 445
 446         /* firmware status */
 447         struct saa7164_fw_status        fw_status;
 448         u32                             firmwareloaded;
 449
 450         struct tmComResHWDescr          hwdesc;
 451         struct tmComResInterfaceDescr   intfdesc;
 452         struct tmComResBusDescr         busdesc;
 453
 454         struct tmComResBusInfo          bus;
 455
 456         /* Interrupt status and ack registers */
 457         u32 int_status;
 458         u32 int_ack;
 459
 460         struct cmd                      cmds[SAA_CMD_MAX_MSG_UNITS];
 461         struct mutex                    lock;
 462
 463         /* I2c related */
 464         struct saa7164_i2c i2c_bus[3];
 465
 466         /* Transport related */
 467         struct saa7164_port ports[SAA7164_MAX_PORTS];
 468
 469         /* Deferred command/api interrupts handling */
 470         struct work_struct workcmd;
 471
 472         /* A kernel thread to monitor the firmware log, used
 473          * only in debug mode.
 474          */
 475         struct task_struct *kthread;
 476
 477 };
 478
 479 extern struct list_head saa7164_devlist;
 480 extern unsigned int waitsecs;
 481 extern unsigned int encoder_buffers;
 482 extern unsigned int vbi_buffers;
 483
 484 /* ----------------------------------------------------------- */
 485 /* saa7164-core.c                                              */
 486 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
 487 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
 488 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
 489 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
 490
 491 /* ----------------------------------------------------------- */
 492 /* saa7164-fw.c                                                */
 493 int saa7164_downloadfirmware(struct saa7164_dev *dev);
 494
 495 /* ----------------------------------------------------------- */
 496 /* saa7164-i2c.c                                               */
 497 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
 498 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
 499 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
 500         unsigned int cmd, void *arg);
 501
 502 /* ----------------------------------------------------------- */
 503 /* saa7164-bus.c                                               */
 504 int saa7164_bus_setup(struct saa7164_dev *dev);
 505 void saa7164_bus_dump(struct saa7164_dev *dev);
 506 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
 507         void *buf);
 508 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
 509         void *buf, int peekonly);
 510
 511 /* ----------------------------------------------------------- */
 512 /* saa7164-cmd.c                                               */
 513 int saa7164_cmd_send(struct saa7164_dev *dev,
 514         u8 id, enum tmComResCmd command, u16 controlselector,
 515         u16 size, void *buf);
 516 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
 517 int saa7164_irq_dequeue(struct saa7164_dev *dev);
 518
 519 /* ----------------------------------------------------------- */
 520 /* saa7164-api.c                                               */
 521 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
 522 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
 523 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
 524         u32 datalen, u8 *data);
 525 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
 526         u32 datalen, u8 *data);
 527 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
 528         u32 datalen, u8 *data);
 529 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
 530 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
 531 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
 532 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
 533 int saa7164_api_initialize_dif(struct saa7164_port *port);
 534 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
 535 int saa7164_api_set_encoder(struct saa7164_port *port);
 536 int saa7164_api_get_encoder(struct saa7164_port *port);
 537 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
 538 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
 539 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
 540 int saa7164_api_set_videomux(struct saa7164_port *port);
 541 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
 542 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
 543 int saa7164_api_set_audio_std(struct saa7164_port *port);
 544 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
 545 int saa7164_api_get_videomux(struct saa7164_port *port);
 546 int saa7164_api_set_vbi_format(struct saa7164_port *port);
 547 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
 548 int saa7164_api_collect_debug(struct saa7164_dev *dev);
 549 int saa7164_api_get_load_info(struct saa7164_dev *dev,
 550         struct tmFwInfoStruct *i);
 551
 552 /* ----------------------------------------------------------- */
 553 /* saa7164-cards.c                                             */
 554 extern struct saa7164_board saa7164_boards[];
 555 extern const unsigned int saa7164_bcount;
 556
 557 extern struct saa7164_subid saa7164_subids[];
 558 extern const unsigned int saa7164_idcount;
 559
 560 extern void saa7164_card_list(struct saa7164_dev *dev);
 561 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
 562 extern void saa7164_card_setup(struct saa7164_dev *dev);
 563
 564 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
 565 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
 566 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
 567
 568 /* ----------------------------------------------------------- */
 569 /* saa7164-dvb.c                                               */
 570 extern int saa7164_dvb_register(struct saa7164_port *port);
 571 extern int saa7164_dvb_unregister(struct saa7164_port *port);
 572
 573 /* ----------------------------------------------------------- */
 574 /* saa7164-buffer.c                                            */
 575 extern struct saa7164_buffer *saa7164_buffer_alloc(
 576         struct saa7164_port *port, u32 len);
 577 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
 578 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
 579 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
 580 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
 581 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
 582         struct saa7164_dev *dev, u32 len);
 583 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
 584 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
 585
 586 /* ----------------------------------------------------------- */
 587 /* saa7164-encoder.c                                            */
 588 int saa7164_encoder_register(struct saa7164_port *port);
 589 void saa7164_encoder_unregister(struct saa7164_port *port);
 590
 591 /* ----------------------------------------------------------- */
 592 /* saa7164-vbi.c                                            */
 593 int saa7164_vbi_register(struct saa7164_port *port);
 594 void saa7164_vbi_unregister(struct saa7164_port *port);
 595
 596 /* ----------------------------------------------------------- */
 597
 598 extern unsigned int crc_checking;
 599
 600 extern unsigned int saa_debug;
 601 #define dprintk(level, fmt, arg...)\
 602         do { if (saa_debug & level)\
 603                 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
 604         } while (0)
 605
 606 #define log_warn(fmt, arg...)\
 607         do { \
 608                 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
 609         } while (0)
 610
 611 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
 612 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
 613
 614 #define saa7164_readb(reg)             readl(dev->bmmio + (reg))
 615 #define saa7164_writeb(reg, value)     writel((value), dev->bmmio + (reg))
 616