drivers/media/video/cx18/cx18-driver.h

   1 /*
   2  *  cx18 driver internal defines and structures
   3  *
   4  *  Derived from ivtv-driver.h
   5  *
   6  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   7  *  Copyright (C) 2008  Andy Walls <awalls@radix.net>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  22  *  02111-1307  USA
  23  */
  24
  25 #ifndef CX18_DRIVER_H
  26 #define CX18_DRIVER_H
  27
  28 #include <linux/version.h>
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <linux/init.h>
  32 #include <linux/delay.h>
  33 #include <linux/sched.h>
  34 #include <linux/fs.h>
  35 #include <linux/pci.h>
  36 #include <linux/interrupt.h>
  37 #include <linux/spinlock.h>
  38 #include <linux/i2c.h>
  39 #include <linux/i2c-algo-bit.h>
  40 #include <linux/list.h>
  41 #include <linux/unistd.h>
  42 #include <linux/pagemap.h>
  43 #include <linux/workqueue.h>
  44 #include <linux/mutex.h>
  45 #include <asm/byteorder.h>
  46
  47 #include <linux/dvb/video.h>
  48 #include <linux/dvb/audio.h>
  49 #include <media/v4l2-common.h>
  50 #include <media/v4l2-ioctl.h>
  51 #include <media/tuner.h>
  52 #include "cx18-mailbox.h"
  53 #include "cx18-av-core.h"
  54 #include "cx23418.h"
  55
  56 /* DVB */
  57 #include "demux.h"
  58 #include "dmxdev.h"
  59 #include "dvb_demux.h"
  60 #include "dvb_frontend.h"
  61 #include "dvb_net.h"
  62 #include "dvbdev.h"
  63
  64 #ifndef CONFIG_PCI
  65 #  error "This driver requires kernel PCI support."
  66 #endif
  67
  68 #define CX18_MEM_OFFSET 0x00000000
  69 #define CX18_MEM_SIZE   0x04000000
  70 #define CX18_REG_OFFSET 0x02000000
  71
  72 /* Maximum cx18 driver instances. */
  73 #define CX18_MAX_CARDS 32
  74
  75 /* Supported cards */
  76 #define CX18_CARD_HVR_1600_ESMT       0 /* Hauppauge HVR 1600 (ESMT memory) */
  77 #define CX18_CARD_HVR_1600_SAMSUNG    1 /* Hauppauge HVR 1600 (Samsung memory) */
  78 #define CX18_CARD_COMPRO_H900         2 /* Compro VideoMate H900 */
  79 #define CX18_CARD_YUAN_MPC718         3 /* Yuan MPC718 */
  80 #define CX18_CARD_CNXT_RAPTOR_PAL     4 /* Conexant Raptor PAL */
  81 #define CX18_CARD_TOSHIBA_QOSMIO_DVBT 5 /* Toshiba Qosmio Interal DVB-T/Analog*/
  82 #define CX18_CARD_LEADTEK_PVR2100     6 /* Leadtek WinFast PVR2100 */
  83 #define CX18_CARD_LAST                6
  84
  85 #define CX18_ENC_STREAM_TYPE_MPG  0
  86 #define CX18_ENC_STREAM_TYPE_TS   1
  87 #define CX18_ENC_STREAM_TYPE_YUV  2
  88 #define CX18_ENC_STREAM_TYPE_VBI  3
  89 #define CX18_ENC_STREAM_TYPE_PCM  4
  90 #define CX18_ENC_STREAM_TYPE_IDX  5
  91 #define CX18_ENC_STREAM_TYPE_RAD  6
  92 #define CX18_MAX_STREAMS          7
  93
  94 /* system vendor and device IDs */
  95 #define PCI_VENDOR_ID_CX      0x14f1
  96 #define PCI_DEVICE_ID_CX23418 0x5b7a
  97
  98 /* subsystem vendor ID */
  99 #define CX18_PCI_ID_HAUPPAUGE           0x0070
 100 #define CX18_PCI_ID_COMPRO              0x185b
 101 #define CX18_PCI_ID_YUAN                0x12ab
 102 #define CX18_PCI_ID_CONEXANT            0x14f1
 103 #define CX18_PCI_ID_TOSHIBA             0x1179
 104 #define CX18_PCI_ID_LEADTEK             0x107D
 105
 106 /* ======================================================================== */
 107 /* ========================== START USER SETTABLE DMA VARIABLES =========== */
 108 /* ======================================================================== */
 109
 110 /* DMA Buffers, Default size in MB allocated */
 111 #define CX18_DEFAULT_ENC_TS_BUFFERS  1
 112 #define CX18_DEFAULT_ENC_MPG_BUFFERS 2
 113 #define CX18_DEFAULT_ENC_IDX_BUFFERS 1
 114 #define CX18_DEFAULT_ENC_YUV_BUFFERS 2
 115 #define CX18_DEFAULT_ENC_VBI_BUFFERS 1
 116 #define CX18_DEFAULT_ENC_PCM_BUFFERS 1
 117
 118 /* Maximum firmware DMA buffers per stream */
 119 #define CX18_MAX_FW_MDLS_PER_STREAM 63
 120
 121 /* DMA buffer, default size in kB allocated */
 122 #define CX18_DEFAULT_ENC_TS_BUFSIZE   32
 123 #define CX18_DEFAULT_ENC_MPG_BUFSIZE  32
 124 #define CX18_DEFAULT_ENC_IDX_BUFSIZE  32
 125 #define CX18_DEFAULT_ENC_YUV_BUFSIZE 128
 126 /* Default VBI bufsize based on standards supported by card tuner for now */
 127 #define CX18_DEFAULT_ENC_PCM_BUFSIZE   4
 128
 129 /* i2c stuff */
 130 #define I2C_CLIENTS_MAX 16
 131
 132 /* debugging */
 133
 134 /* Flag to turn on high volume debugging */
 135 #define CX18_DBGFLG_WARN  (1 << 0)
 136 #define CX18_DBGFLG_INFO  (1 << 1)
 137 #define CX18_DBGFLG_API   (1 << 2)
 138 #define CX18_DBGFLG_DMA   (1 << 3)
 139 #define CX18_DBGFLG_IOCTL (1 << 4)
 140 #define CX18_DBGFLG_FILE  (1 << 5)
 141 #define CX18_DBGFLG_I2C   (1 << 6)
 142 #define CX18_DBGFLG_IRQ   (1 << 7)
 143 /* Flag to turn on high volume debugging */
 144 #define CX18_DBGFLG_HIGHVOL (1 << 8)
 145
 146 /* NOTE: extra space before comma in 'cx->num , ## args' is required for
 147    gcc-2.95, otherwise it won't compile. */
 148 #define CX18_DEBUG(x, type, fmt, args...) \
 149         do { \
 150                 if ((x) & cx18_debug) \
 151                         printk(KERN_INFO "cx18-%d " type ": " fmt, cx->num , ## args); \
 152         } while (0)
 153 #define CX18_DEBUG_WARN(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_WARN, "warning", fmt , ## args)
 154 #define CX18_DEBUG_INFO(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_INFO, "info", fmt , ## args)
 155 #define CX18_DEBUG_API(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_API, "api", fmt , ## args)
 156 #define CX18_DEBUG_DMA(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_DMA, "dma", fmt , ## args)
 157 #define CX18_DEBUG_IOCTL(fmt, args...) CX18_DEBUG(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 158 #define CX18_DEBUG_FILE(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_FILE, "file", fmt , ## args)
 159 #define CX18_DEBUG_I2C(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
 160 #define CX18_DEBUG_IRQ(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
 161
 162 #define CX18_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 163         do { \
 164                 if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
 165                         printk(KERN_INFO "cx18%d " type ": " fmt, cx->num , ## args); \
 166         } while (0)
 167 #define CX18_DEBUG_HI_WARN(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_WARN, "warning", fmt , ## args)
 168 #define CX18_DEBUG_HI_INFO(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_INFO, "info", fmt , ## args)
 169 #define CX18_DEBUG_HI_API(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_API, "api", fmt , ## args)
 170 #define CX18_DEBUG_HI_DMA(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_DMA, "dma", fmt , ## args)
 171 #define CX18_DEBUG_HI_IOCTL(fmt, args...) CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 172 #define CX18_DEBUG_HI_FILE(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_FILE, "file", fmt , ## args)
 173 #define CX18_DEBUG_HI_I2C(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
 174 #define CX18_DEBUG_HI_IRQ(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
 175
 176 /* Standard kernel messages */
 177 #define CX18_ERR(fmt, args...)      printk(KERN_ERR  "cx18-%d: " fmt, cx->num , ## args)
 178 #define CX18_WARN(fmt, args...)     printk(KERN_WARNING "cx18-%d: " fmt, cx->num , ## args)
 179 #define CX18_INFO(fmt, args...)     printk(KERN_INFO "cx18-%d: " fmt, cx->num , ## args)
 180
 181 /* Values for CX18_API_DEC_PLAYBACK_SPEED mpeg_frame_type_mask parameter: */
 182 #define MPEG_FRAME_TYPE_IFRAME 1
 183 #define MPEG_FRAME_TYPE_IFRAME_PFRAME 3
 184 #define MPEG_FRAME_TYPE_ALL 7
 185
 186 #define CX18_MAX_PGM_INDEX (400)
 187
 188 extern int cx18_debug;
 189
 190
 191 struct cx18_options {
 192         int megabytes[CX18_MAX_STREAMS]; /* Size in megabytes of each stream */
 193         int cardtype;           /* force card type on load */
 194         int tuner;              /* set tuner on load */
 195         int radio;              /* enable/disable radio */
 196 };
 197
 198 /* per-buffer bit flags */
 199 #define CX18_F_B_NEED_BUF_SWAP  0       /* this buffer should be byte swapped */
 200
 201 /* per-stream, s_flags */
 202 #define CX18_F_S_CLAIMED        3       /* this stream is claimed */
 203 #define CX18_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 204 #define CX18_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 205 #define CX18_F_S_STREAMOFF      7       /* signal end of stream EOS */
 206 #define CX18_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 207
 208 /* per-cx18, i_flags */
 209 #define CX18_F_I_LOADED_FW              0       /* Loaded firmware 1st time */
 210 #define CX18_F_I_EOS                    4       /* End of encoder stream */
 211 #define CX18_F_I_RADIO_USER             5       /* radio tuner is selected */
 212 #define CX18_F_I_ENC_PAUSED             13      /* the encoder is paused */
 213 #define CX18_F_I_INITED                 21      /* set after first open */
 214 #define CX18_F_I_FAILED                 22      /* set if first open failed */
 215
 216 /* These are the VBI types as they appear in the embedded VBI private packets. */
 217 #define CX18_SLICED_TYPE_TELETEXT_B     (1)
 218 #define CX18_SLICED_TYPE_CAPTION_525    (4)
 219 #define CX18_SLICED_TYPE_WSS_625        (5)
 220 #define CX18_SLICED_TYPE_VPS            (7)
 221
 222 struct cx18_buffer {
 223         struct list_head list;
 224         dma_addr_t dma_handle;
 225         u32 id;
 226         unsigned long b_flags;
 227         unsigned skipped;
 228         char *buf;
 229
 230         u32 bytesused;
 231         u32 readpos;
 232 };
 233
 234 struct cx18_queue {
 235         struct list_head list;
 236         atomic_t buffers;
 237         u32 bytesused;
 238 };
 239
 240 struct cx18_dvb {
 241         struct dmx_frontend hw_frontend;
 242         struct dmx_frontend mem_frontend;
 243         struct dmxdev dmxdev;
 244         struct dvb_adapter dvb_adapter;
 245         struct dvb_demux demux;
 246         struct dvb_frontend *fe;
 247         struct dvb_net dvbnet;
 248         int enabled;
 249         int feeding;
 250         struct mutex feedlock;
 251 };
 252
 253 struct cx18;     /* forward reference */
 254 struct cx18_scb; /* forward reference */
 255
 256
 257 #define CX18_MAX_MDL_ACKS 2
 258 #define CX18_MAX_EPU_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7)
 259 /* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */
 260
 261 #define CX18_F_EWO_MB_STALE_UPON_RECEIPT 0x1
 262 #define CX18_F_EWO_MB_STALE_WHILE_PROC   0x2
 263 #define CX18_F_EWO_MB_STALE \
 264              (CX18_F_EWO_MB_STALE_UPON_RECEIPT | CX18_F_EWO_MB_STALE_WHILE_PROC)
 265
 266 struct cx18_epu_work_order {
 267         struct work_struct work;
 268         atomic_t pending;
 269         struct cx18 *cx;
 270         unsigned long flags;
 271         int rpu;
 272         struct cx18_mailbox mb;
 273         struct cx18_mdl_ack mdl_ack[CX18_MAX_MDL_ACKS];
 274         char *str;
 275 };
 276
 277 #define CX18_INVALID_TASK_HANDLE 0xffffffff
 278
 279 struct cx18_stream {
 280         /* These first four fields are always set, even if the stream
 281            is not actually created. */
 282         struct video_device *v4l2dev;   /* NULL when stream not created */
 283         struct cx18 *cx;                /* for ease of use */
 284         const char *name;               /* name of the stream */
 285         int type;                       /* stream type */
 286         u32 handle;                     /* task handle */
 287         unsigned mdl_offset;
 288
 289         u32 id;
 290         struct mutex qlock;     /* locks access to the queues */
 291         unsigned long s_flags;  /* status flags, see above */
 292         int dma;                /* can be PCI_DMA_TODEVICE,
 293                                    PCI_DMA_FROMDEVICE or
 294                                    PCI_DMA_NONE */
 295         u64 dma_pts;
 296         wait_queue_head_t waitq;
 297
 298         /* Buffer Stats */
 299         u32 buffers;
 300         u32 buf_size;
 301
 302         /* Buffer Queues */
 303         struct cx18_queue q_free;       /* free buffers */
 304         struct cx18_queue q_busy;       /* busy buffers - in use by firmware */
 305         struct cx18_queue q_full;       /* full buffers - data for user apps */
 306
 307         /* DVB / Digital Transport */
 308         struct cx18_dvb dvb;
 309 };
 310
 311 struct cx18_open_id {
 312         u32 open_id;
 313         int type;
 314         enum v4l2_priority prio;
 315         struct cx18 *cx;
 316 };
 317
 318 /* forward declaration of struct defined in cx18-cards.h */
 319 struct cx18_card;
 320
 321
 322 #define CX18_VBI_FRAMES 32
 323
 324 /* VBI data */
 325 struct vbi_info {
 326         u32 enc_size;
 327         u32 frame;
 328         u8 cc_data_odd[256];
 329         u8 cc_data_even[256];
 330         int cc_pos;
 331         u8 cc_no_update;
 332         u8 vps[5];
 333         u8 vps_found;
 334         int wss;
 335         u8 wss_found;
 336         u8 wss_no_update;
 337         u32 raw_decoder_line_size;
 338         u8 raw_decoder_sav_odd_field;
 339         u8 raw_decoder_sav_even_field;
 340         u32 sliced_decoder_line_size;
 341         u8 sliced_decoder_sav_odd_field;
 342         u8 sliced_decoder_sav_even_field;
 343         struct v4l2_format in;
 344         /* convenience pointer to sliced struct in vbi_in union */
 345         struct v4l2_sliced_vbi_format *sliced_in;
 346         u32 service_set_in;
 347         int insert_mpeg;
 348
 349         /* Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
 350            One for /dev/vbi0 and one for /dev/vbi8 */
 351         struct v4l2_sliced_vbi_data sliced_data[36];
 352
 353         /* Buffer for VBI data inserted into MPEG stream.
 354            The first byte is a dummy byte that's never used.
 355            The next 16 bytes contain the MPEG header for the VBI data,
 356            the remainder is the actual VBI data.
 357            The max size accepted by the MPEG VBI reinsertion turns out
 358            to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
 359            where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
 360            a single line header byte and 2 * 18 is the number of VBI lines per frame.
 361
 362            However, it seems that the data must be 1K aligned, so we have to
 363            pad the data until the 1 or 2 K boundary.
 364
 365            This pointer array will allocate 2049 bytes to store each VBI frame. */
 366         u8 *sliced_mpeg_data[CX18_VBI_FRAMES];
 367         u32 sliced_mpeg_size[CX18_VBI_FRAMES];
 368         struct cx18_buffer sliced_mpeg_buf;
 369         u32 inserted_frame;
 370
 371         u32 start[2], count;
 372         u32 raw_size;
 373         u32 sliced_size;
 374 };
 375
 376 /* Per cx23418, per I2C bus private algo callback data */
 377 struct cx18_i2c_algo_callback_data {
 378         struct cx18 *cx;
 379         int bus_index;   /* 0 or 1 for the cx23418's 1st or 2nd I2C bus */
 380 };
 381
 382 #define CX18_MAX_MMIO_WR_RETRIES 10
 383
 384 /* Struct to hold info about cx18 cards */
 385 struct cx18 {
 386         int num;                /* board number, -1 during init! */
 387         char name[8];           /* board name for printk and interrupts (e.g. 'cx180') */
 388         struct pci_dev *dev;    /* PCI device */
 389         const struct cx18_card *card;   /* card information */
 390         const char *card_name;  /* full name of the card */
 391         const struct cx18_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
 392         u8 is_50hz;
 393         u8 is_60hz;
 394         u8 is_out_50hz;
 395         u8 is_out_60hz;
 396         u8 nof_inputs;          /* number of video inputs */
 397         u8 nof_audio_inputs;    /* number of audio inputs */
 398         u16 buffer_id;          /* buffer ID counter */
 399         u32 v4l2_cap;           /* V4L2 capabilities of card */
 400         u32 hw_flags;           /* Hardware description of the board */
 401         unsigned mdl_offset;
 402         struct cx18_scb __iomem *scb; /* pointer to SCB */
 403         struct mutex epu2apu_mb_lock; /* protect driver to chip mailbox in SCB*/
 404         struct mutex epu2cpu_mb_lock; /* protect driver to chip mailbox in SCB*/
 405
 406         struct cx18_av_state av_state;
 407
 408         /* codec settings */
 409         struct cx2341x_mpeg_params params;
 410         u32 filter_mode;
 411         u32 temporal_strength;
 412         u32 spatial_strength;
 413
 414         /* dualwatch */
 415         unsigned long dualwatch_jiffies;
 416         u16 dualwatch_stereo_mode;
 417
 418         /* Digitizer type */
 419         int digitizer;          /* 0x00EF = saa7114 0x00FO = saa7115 0x0106 = mic */
 420
 421         struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 422         struct cx18_options options;    /* User options */
 423         int stream_buffers[CX18_MAX_STREAMS]; /* # of buffers for each stream */
 424         int stream_buf_size[CX18_MAX_STREAMS]; /* Stream buffer size */
 425         struct cx18_stream streams[CX18_MAX_STREAMS];   /* Stream data */
 426         unsigned long i_flags;  /* global cx18 flags */
 427         atomic_t ana_capturing; /* count number of active analog capture streams */
 428         atomic_t tot_capturing; /* total count number of active capture streams */
 429         spinlock_t lock;        /* lock access to this struct */
 430         int search_pack_header;
 431
 432         int open_id;            /* incremented each time an open occurs, used as
 433                                    unique ID. Starts at 1, so 0 can be used as
 434                                    uninitialized value in the stream->id. */
 435
 436         u32 base_addr;
 437         struct v4l2_prio_state prio;
 438
 439         u8 card_rev;
 440         void __iomem *enc_mem, *reg_mem;
 441
 442         struct vbi_info vbi;
 443
 444         u32 pgm_info_offset;
 445         u32 pgm_info_num;
 446         u32 pgm_info_write_idx;
 447         u32 pgm_info_read_idx;
 448         struct v4l2_enc_idx_entry pgm_info[CX18_MAX_PGM_INDEX];
 449
 450         u64 mpg_data_received;
 451         u64 vbi_data_inserted;
 452
 453         wait_queue_head_t mb_apu_waitq;
 454         wait_queue_head_t mb_cpu_waitq;
 455         wait_queue_head_t cap_w;
 456         /* when the current DMA is finished this queue is woken up */
 457         wait_queue_head_t dma_waitq;
 458
 459         u32 sw1_irq_mask;
 460         u32 sw2_irq_mask;
 461         u32 hw2_irq_mask;
 462
 463         struct workqueue_struct *work_queue;
 464         struct cx18_epu_work_order epu_work_order[CX18_MAX_EPU_WORK_ORDERS];
 465         char epu_debug_str[256]; /* CX18_EPU_DEBUG is rare: use shared space */
 466
 467         /* i2c */
 468         struct i2c_adapter i2c_adap[2];
 469         struct i2c_algo_bit_data i2c_algo[2];
 470         struct cx18_i2c_algo_callback_data i2c_algo_cb_data[2];
 471         struct i2c_client i2c_client[2];
 472         struct mutex i2c_bus_lock[2];
 473         struct i2c_client *i2c_clients[I2C_CLIENTS_MAX];
 474
 475         /* gpio */
 476         u32 gpio_dir;
 477         u32 gpio_val;
 478         struct mutex gpio_lock;
 479
 480         /* v4l2 and User settings */
 481
 482         /* codec settings */
 483         u32 audio_input;
 484         u32 active_input;
 485         u32 active_output;
 486         v4l2_std_id std;
 487         v4l2_std_id tuner_std;  /* The norm of the tuner (fixed) */
 488 };
 489
 490 /* Globals */
 491 extern struct cx18 *cx18_cards[];
 492 extern int cx18_cards_active;
 493 extern int cx18_first_minor;
 494 extern spinlock_t cx18_cards_lock;
 495
 496 /*==============Prototypes==================*/
 497
 498 /* Return non-zero if a signal is pending */
 499 int cx18_msleep_timeout(unsigned int msecs, int intr);
 500
 501 /* Read Hauppauge eeprom */
 502 struct tveeprom; /* forward reference */
 503 void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv);
 504
 505 /* First-open initialization: load firmware, etc. */
 506 int cx18_init_on_first_open(struct cx18 *cx);
 507
 508 /* Test if the current VBI mode is raw (1) or sliced (0) */
 509 static inline int cx18_raw_vbi(const struct cx18 *cx)
 510 {
 511         return cx->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
 512 }
 513
 514 #endif /* CX18_DRIVER_H */