linux/drivers/media/video/cx18/cx18-driver.h
<<
>>
Prefs
   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@md.metrocast.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 <linux/slab.h>
  46#include <asm/byteorder.h>
  47
  48#include <linux/dvb/video.h>
  49#include <linux/dvb/audio.h>
  50#include <media/v4l2-common.h>
  51#include <media/v4l2-ioctl.h>
  52#include <media/v4l2-device.h>
  53#include <media/tuner.h>
  54#include <media/ir-kbd-i2c.h>
  55#include "cx18-mailbox.h"
  56#include "cx18-av-core.h"
  57#include "cx23418.h"
  58
  59/* DVB */
  60#include "demux.h"
  61#include "dmxdev.h"
  62#include "dvb_demux.h"
  63#include "dvb_frontend.h"
  64#include "dvb_net.h"
  65#include "dvbdev.h"
  66
  67#ifndef CONFIG_PCI
  68#  error "This driver requires kernel PCI support."
  69#endif
  70
  71#define CX18_MEM_OFFSET 0x00000000
  72#define CX18_MEM_SIZE   0x04000000
  73#define CX18_REG_OFFSET 0x02000000
  74
  75/* Maximum cx18 driver instances. */
  76#define CX18_MAX_CARDS 32
  77
  78/* Supported cards */
  79#define CX18_CARD_HVR_1600_ESMT       0 /* Hauppauge HVR 1600 (ESMT memory) */
  80#define CX18_CARD_HVR_1600_SAMSUNG    1 /* Hauppauge HVR 1600 (Samsung memory) */
  81#define CX18_CARD_COMPRO_H900         2 /* Compro VideoMate H900 */
  82#define CX18_CARD_YUAN_MPC718         3 /* Yuan MPC718 */
  83#define CX18_CARD_CNXT_RAPTOR_PAL     4 /* Conexant Raptor PAL */
  84#define CX18_CARD_TOSHIBA_QOSMIO_DVBT 5 /* Toshiba Qosmio Interal DVB-T/Analog*/
  85#define CX18_CARD_LEADTEK_PVR2100     6 /* Leadtek WinFast PVR2100 */
  86#define CX18_CARD_LEADTEK_DVR3100H    7 /* Leadtek WinFast DVR3100 H */
  87#define CX18_CARD_LAST                7
  88
  89#define CX18_ENC_STREAM_TYPE_MPG  0
  90#define CX18_ENC_STREAM_TYPE_TS   1
  91#define CX18_ENC_STREAM_TYPE_YUV  2
  92#define CX18_ENC_STREAM_TYPE_VBI  3
  93#define CX18_ENC_STREAM_TYPE_PCM  4
  94#define CX18_ENC_STREAM_TYPE_IDX  5
  95#define CX18_ENC_STREAM_TYPE_RAD  6
  96#define CX18_MAX_STREAMS          7
  97
  98/* system vendor and device IDs */
  99#define PCI_VENDOR_ID_CX      0x14f1
 100#define PCI_DEVICE_ID_CX23418 0x5b7a
 101
 102/* subsystem vendor ID */
 103#define CX18_PCI_ID_HAUPPAUGE           0x0070
 104#define CX18_PCI_ID_COMPRO              0x185b
 105#define CX18_PCI_ID_YUAN                0x12ab
 106#define CX18_PCI_ID_CONEXANT            0x14f1
 107#define CX18_PCI_ID_TOSHIBA             0x1179
 108#define CX18_PCI_ID_LEADTEK             0x107D
 109
 110/* ======================================================================== */
 111/* ========================== START USER SETTABLE DMA VARIABLES =========== */
 112/* ======================================================================== */
 113
 114/* DMA Buffers, Default size in MB allocated */
 115#define CX18_DEFAULT_ENC_TS_BUFFERS  1
 116#define CX18_DEFAULT_ENC_MPG_BUFFERS 2
 117#define CX18_DEFAULT_ENC_IDX_BUFFERS 1
 118#define CX18_DEFAULT_ENC_YUV_BUFFERS 2
 119#define CX18_DEFAULT_ENC_VBI_BUFFERS 1
 120#define CX18_DEFAULT_ENC_PCM_BUFFERS 1
 121
 122/* Maximum firmware DMA buffers per stream */
 123#define CX18_MAX_FW_MDLS_PER_STREAM 63
 124
 125/* YUV buffer sizes in bytes to ensure integer # of frames per buffer */
 126#define CX18_UNIT_ENC_YUV_BUFSIZE       (720 *  32 * 3 / 2) /* bytes */
 127#define CX18_625_LINE_ENC_YUV_BUFSIZE   (CX18_UNIT_ENC_YUV_BUFSIZE * 576/32)
 128#define CX18_525_LINE_ENC_YUV_BUFSIZE   (CX18_UNIT_ENC_YUV_BUFSIZE * 480/32)
 129
 130/* IDX buffer size should be a multiple of the index entry size from the chip */
 131struct cx18_enc_idx_entry {
 132        __le32 length;
 133        __le32 offset_low;
 134        __le32 offset_high;
 135        __le32 flags;
 136        __le32 pts_low;
 137        __le32 pts_high;
 138} __attribute__ ((packed));
 139#define CX18_UNIT_ENC_IDX_BUFSIZE \
 140        (sizeof(struct cx18_enc_idx_entry) * V4L2_ENC_IDX_ENTRIES)
 141
 142/* DMA buffer, default size in kB allocated */
 143#define CX18_DEFAULT_ENC_TS_BUFSIZE   32
 144#define CX18_DEFAULT_ENC_MPG_BUFSIZE  32
 145#define CX18_DEFAULT_ENC_IDX_BUFSIZE  (CX18_UNIT_ENC_IDX_BUFSIZE * 1 / 1024 + 1)
 146#define CX18_DEFAULT_ENC_YUV_BUFSIZE  (CX18_UNIT_ENC_YUV_BUFSIZE * 3 / 1024 + 1)
 147#define CX18_DEFAULT_ENC_PCM_BUFSIZE   4
 148
 149/* i2c stuff */
 150#define I2C_CLIENTS_MAX 16
 151
 152/* debugging */
 153
 154/* Flag to turn on high volume debugging */
 155#define CX18_DBGFLG_WARN  (1 << 0)
 156#define CX18_DBGFLG_INFO  (1 << 1)
 157#define CX18_DBGFLG_API   (1 << 2)
 158#define CX18_DBGFLG_DMA   (1 << 3)
 159#define CX18_DBGFLG_IOCTL (1 << 4)
 160#define CX18_DBGFLG_FILE  (1 << 5)
 161#define CX18_DBGFLG_I2C   (1 << 6)
 162#define CX18_DBGFLG_IRQ   (1 << 7)
 163/* Flag to turn on high volume debugging */
 164#define CX18_DBGFLG_HIGHVOL (1 << 8)
 165
 166/* NOTE: extra space before comma in 'fmt , ## args' is required for
 167   gcc-2.95, otherwise it won't compile. */
 168#define CX18_DEBUG(x, type, fmt, args...) \
 169        do { \
 170                if ((x) & cx18_debug) \
 171                        v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
 172        } while (0)
 173#define CX18_DEBUG_WARN(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_WARN, "warning", fmt , ## args)
 174#define CX18_DEBUG_INFO(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_INFO, "info", fmt , ## args)
 175#define CX18_DEBUG_API(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_API, "api", fmt , ## args)
 176#define CX18_DEBUG_DMA(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_DMA, "dma", fmt , ## args)
 177#define CX18_DEBUG_IOCTL(fmt, args...) CX18_DEBUG(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 178#define CX18_DEBUG_FILE(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_FILE, "file", fmt , ## args)
 179#define CX18_DEBUG_I2C(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
 180#define CX18_DEBUG_IRQ(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
 181
 182#define CX18_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 183        do { \
 184                if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
 185                        v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
 186        } while (0)
 187#define CX18_DEBUG_HI_WARN(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_WARN, "warning", fmt , ## args)
 188#define CX18_DEBUG_HI_INFO(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_INFO, "info", fmt , ## args)
 189#define CX18_DEBUG_HI_API(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_API, "api", fmt , ## args)
 190#define CX18_DEBUG_HI_DMA(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_DMA, "dma", fmt , ## args)
 191#define CX18_DEBUG_HI_IOCTL(fmt, args...) CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 192#define CX18_DEBUG_HI_FILE(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_FILE, "file", fmt , ## args)
 193#define CX18_DEBUG_HI_I2C(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
 194#define CX18_DEBUG_HI_IRQ(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IRQ, "irq", fmt , ## args)
 195
 196/* Standard kernel messages */
 197#define CX18_ERR(fmt, args...)      v4l2_err(&cx->v4l2_dev, fmt , ## args)
 198#define CX18_WARN(fmt, args...)     v4l2_warn(&cx->v4l2_dev, fmt , ## args)
 199#define CX18_INFO(fmt, args...)     v4l2_info(&cx->v4l2_dev, fmt , ## args)
 200
 201/* Messages for internal subdevs to use */
 202#define CX18_DEBUG_DEV(x, dev, type, fmt, args...) \
 203        do { \
 204                if ((x) & cx18_debug) \
 205                        v4l2_info(dev, " " type ": " fmt , ## args); \
 206        } while (0)
 207#define CX18_DEBUG_WARN_DEV(dev, fmt, args...) \
 208                CX18_DEBUG_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
 209#define CX18_DEBUG_INFO_DEV(dev, fmt, args...) \
 210                CX18_DEBUG_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
 211#define CX18_DEBUG_API_DEV(dev, fmt, args...) \
 212                CX18_DEBUG_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
 213#define CX18_DEBUG_DMA_DEV(dev, fmt, args...) \
 214                CX18_DEBUG_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
 215#define CX18_DEBUG_IOCTL_DEV(dev, fmt, args...) \
 216                CX18_DEBUG_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
 217#define CX18_DEBUG_FILE_DEV(dev, fmt, args...) \
 218                CX18_DEBUG_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
 219#define CX18_DEBUG_I2C_DEV(dev, fmt, args...) \
 220                CX18_DEBUG_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
 221#define CX18_DEBUG_IRQ_DEV(dev, fmt, args...) \
 222                CX18_DEBUG_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)
 223
 224#define CX18_DEBUG_HIGH_VOL_DEV(x, dev, type, fmt, args...) \
 225        do { \
 226                if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
 227                        v4l2_info(dev, " " type ": " fmt , ## args); \
 228        } while (0)
 229#define CX18_DEBUG_HI_WARN_DEV(dev, fmt, args...) \
 230        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
 231#define CX18_DEBUG_HI_INFO_DEV(dev, fmt, args...) \
 232        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
 233#define CX18_DEBUG_HI_API_DEV(dev, fmt, args...) \
 234        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
 235#define CX18_DEBUG_HI_DMA_DEV(dev, fmt, args...) \
 236        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
 237#define CX18_DEBUG_HI_IOCTL_DEV(dev, fmt, args...) \
 238        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
 239#define CX18_DEBUG_HI_FILE_DEV(dev, fmt, args...) \
 240        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
 241#define CX18_DEBUG_HI_I2C_DEV(dev, fmt, args...) \
 242        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
 243#define CX18_DEBUG_HI_IRQ_DEV(dev, fmt, args...) \
 244        CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)
 245
 246#define CX18_ERR_DEV(dev, fmt, args...)      v4l2_err(dev, fmt , ## args)
 247#define CX18_WARN_DEV(dev, fmt, args...)     v4l2_warn(dev, fmt , ## args)
 248#define CX18_INFO_DEV(dev, fmt, args...)     v4l2_info(dev, fmt , ## args)
 249
 250extern int cx18_debug;
 251
 252struct cx18_options {
 253        int megabytes[CX18_MAX_STREAMS]; /* Size in megabytes of each stream */
 254        int cardtype;           /* force card type on load */
 255        int tuner;              /* set tuner on load */
 256        int radio;              /* enable/disable radio */
 257};
 258
 259/* per-mdl bit flags */
 260#define CX18_F_M_NEED_SWAP  0   /* mdl buffer data must be endianess swapped */
 261
 262/* per-stream, s_flags */
 263#define CX18_F_S_CLAIMED        3       /* this stream is claimed */
 264#define CX18_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 265#define CX18_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 266#define CX18_F_S_STREAMOFF      7       /* signal end of stream EOS */
 267#define CX18_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 268#define CX18_F_S_STOPPING       9       /* telling the fw to stop capturing */
 269
 270/* per-cx18, i_flags */
 271#define CX18_F_I_LOADED_FW              0       /* Loaded firmware 1st time */
 272#define CX18_F_I_EOS                    4       /* End of encoder stream */
 273#define CX18_F_I_RADIO_USER             5       /* radio tuner is selected */
 274#define CX18_F_I_ENC_PAUSED             13      /* the encoder is paused */
 275#define CX18_F_I_INITED                 21      /* set after first open */
 276#define CX18_F_I_FAILED                 22      /* set if first open failed */
 277
 278/* These are the VBI types as they appear in the embedded VBI private packets. */
 279#define CX18_SLICED_TYPE_TELETEXT_B     (1)
 280#define CX18_SLICED_TYPE_CAPTION_525    (4)
 281#define CX18_SLICED_TYPE_WSS_625        (5)
 282#define CX18_SLICED_TYPE_VPS            (7)
 283
 284/**
 285 * list_entry_is_past_end - check if a previous loop cursor is off list end
 286 * @pos:        the type * previously used as a loop cursor.
 287 * @head:       the head for your list.
 288 * @member:     the name of the list_struct within the struct.
 289 *
 290 * Check if the entry's list_head is the head of the list, thus it's not a
 291 * real entry but was the loop cursor that walked past the end
 292 */
 293#define list_entry_is_past_end(pos, head, member) \
 294        (&pos->member == (head))
 295
 296struct cx18_buffer {
 297        struct list_head list;
 298        dma_addr_t dma_handle;
 299        char *buf;
 300
 301        u32 bytesused;
 302        u32 readpos;
 303};
 304
 305struct cx18_mdl {
 306        struct list_head list;
 307        u32 id;         /* index into cx->scb->cpu_mdl[] of 1st cx18_mdl_ent */
 308
 309        unsigned int skipped;
 310        unsigned long m_flags;
 311
 312        struct list_head buf_list;
 313        struct cx18_buffer *curr_buf; /* current buffer in list for reading */
 314
 315        u32 bytesused;
 316        u32 readpos;
 317};
 318
 319struct cx18_queue {
 320        struct list_head list;
 321        atomic_t depth;
 322        u32 bytesused;
 323        spinlock_t lock;
 324};
 325
 326struct cx18_dvb {
 327        struct dmx_frontend hw_frontend;
 328        struct dmx_frontend mem_frontend;
 329        struct dmxdev dmxdev;
 330        struct dvb_adapter dvb_adapter;
 331        struct dvb_demux demux;
 332        struct dvb_frontend *fe;
 333        struct dvb_net dvbnet;
 334        int enabled;
 335        int feeding;
 336        struct mutex feedlock;
 337};
 338
 339struct cx18;     /* forward reference */
 340struct cx18_scb; /* forward reference */
 341
 342
 343#define CX18_MAX_MDL_ACKS 2
 344#define CX18_MAX_IN_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7)
 345/* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */
 346
 347#define CX18_F_EWO_MB_STALE_UPON_RECEIPT 0x1
 348#define CX18_F_EWO_MB_STALE_WHILE_PROC   0x2
 349#define CX18_F_EWO_MB_STALE \
 350             (CX18_F_EWO_MB_STALE_UPON_RECEIPT | CX18_F_EWO_MB_STALE_WHILE_PROC)
 351
 352struct cx18_in_work_order {
 353        struct work_struct work;
 354        atomic_t pending;
 355        struct cx18 *cx;
 356        unsigned long flags;
 357        int rpu;
 358        struct cx18_mailbox mb;
 359        struct cx18_mdl_ack mdl_ack[CX18_MAX_MDL_ACKS];
 360        char *str;
 361};
 362
 363#define CX18_INVALID_TASK_HANDLE 0xffffffff
 364
 365struct cx18_stream {
 366        /* These first four fields are always set, even if the stream
 367           is not actually created. */
 368        struct video_device *video_dev; /* NULL when stream not created */
 369        struct cx18 *cx;                /* for ease of use */
 370        const char *name;               /* name of the stream */
 371        int type;                       /* stream type */
 372        u32 handle;                     /* task handle */
 373        unsigned int mdl_base_idx;
 374
 375        u32 id;
 376        unsigned long s_flags;  /* status flags, see above */
 377        int dma;                /* can be PCI_DMA_TODEVICE,
 378                                   PCI_DMA_FROMDEVICE or
 379                                   PCI_DMA_NONE */
 380        wait_queue_head_t waitq;
 381
 382        /* Buffers */
 383        struct list_head buf_pool;      /* buffers not attached to an MDL */
 384        u32 buffers;                    /* total buffers owned by this stream */
 385        u32 buf_size;                   /* size in bytes of a single buffer */
 386
 387        /* MDL sizes - all stream MDLs are the same size */
 388        u32 bufs_per_mdl;
 389        u32 mdl_size;           /* total bytes in all buffers in a mdl */
 390
 391        /* MDL Queues */
 392        struct cx18_queue q_free;       /* free - in rotation, not committed */
 393        struct cx18_queue q_busy;       /* busy - in use by firmware */
 394        struct cx18_queue q_full;       /* full - data for user apps */
 395        struct cx18_queue q_idle;       /* idle - not in rotation */
 396
 397        struct work_struct out_work_order;
 398
 399        /* DVB / Digital Transport */
 400        struct cx18_dvb dvb;
 401};
 402
 403struct cx18_open_id {
 404        u32 open_id;
 405        int type;
 406        enum v4l2_priority prio;
 407        struct cx18 *cx;
 408};
 409
 410/* forward declaration of struct defined in cx18-cards.h */
 411struct cx18_card;
 412
 413/*
 414 * A note about "sliced" VBI data as implemented in this driver:
 415 *
 416 * Currently we collect the sliced VBI in the form of Ancillary Data
 417 * packets, inserted by the AV core decoder/digitizer/slicer in the
 418 * horizontal blanking region of the VBI lines, in "raw" mode as far as
 419 * the Encoder is concerned.  We don't ever tell the Encoder itself
 420 * to provide sliced VBI. (AV Core: sliced mode - Encoder: raw mode)
 421 *
 422 * We then process the ancillary data ourselves to send the sliced data
 423 * to the user application directly or build up MPEG-2 private stream 1
 424 * packets to splice into (only!) MPEG-2 PS streams for the user app.
 425 *
 426 * (That's how ivtv essentially does it.)
 427 *
 428 * The Encoder should be able to extract certain sliced VBI data for
 429 * us and provide it in a separate stream or splice it into any type of
 430 * MPEG PS or TS stream, but this isn't implemented yet.
 431 */
 432
 433/*
 434 * Number of "raw" VBI samples per horizontal line we tell the Encoder to
 435 * grab from the decoder/digitizer/slicer output for raw or sliced VBI.
 436 * It depends on the pixel clock and the horiz rate:
 437 *
 438 * (1/Fh)*(2*Fp) = Samples/line
 439 *     = 4 bytes EAV + Anc data in hblank + 4 bytes SAV + active samples
 440 *
 441 *  Sliced VBI data is sent as ancillary data during horizontal blanking
 442 *  Raw VBI is sent as active video samples during vertcal blanking
 443 *
 444 *  We use a  BT.656 pxiel clock of 13.5 MHz and a BT.656 active line
 445 *  length of 720 pixels @ 4:2:2 sampling.  Thus...
 446 *
 447 *  For systems that use a 15.734 kHz horizontal rate, such as
 448 *  NTSC-M, PAL-M, PAL-60, and other 60 Hz/525 line systems, we have:
 449 *
 450 *  (1/15.734 kHz) * 2 * 13.5 MHz = 1716 samples/line =
 451 *  4 bytes SAV + 268 bytes anc data + 4 bytes SAV + 1440 active samples
 452 *
 453 *  For systems that use a 15.625 kHz horizontal rate, such as
 454 *  PAL-B/G/H, PAL-I, SECAM-L and other 50 Hz/625 line systems, we have:
 455 *
 456 *  (1/15.625 kHz) * 2 * 13.5 MHz = 1728 samples/line =
 457 *  4 bytes SAV + 280 bytes anc data + 4 bytes SAV + 1440 active samples
 458 */
 459static const u32 vbi_active_samples = 1444; /* 4 byte SAV + 720 Y + 720 U/V */
 460static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */
 461static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */
 462
 463#define CX18_VBI_FRAMES 32
 464
 465struct vbi_info {
 466        /* Current state of v4l2 VBI settings for this device */
 467        struct v4l2_format in;
 468        struct v4l2_sliced_vbi_format *sliced_in; /* pointer to in.fmt.sliced */
 469        u32 count;    /* Count of VBI data lines: 60 Hz: 12 or 50 Hz: 18 */
 470        u32 start[2]; /* First VBI data line per field: 10 & 273 or 6 & 318 */
 471
 472        u32 frame; /* Count of VBI buffers/frames received from Encoder */
 473
 474        /*
 475         * Vars for creation and insertion of MPEG Private Stream 1 packets
 476         * of sliced VBI data into an MPEG PS
 477         */
 478
 479        /* Boolean: create and insert Private Stream 1 packets into the PS */
 480        int insert_mpeg;
 481
 482        /*
 483         * Buffer for the maximum of 2 * 18 * packet_size sliced VBI lines.
 484         * Used in cx18-vbi.c only for collecting sliced data, and as a source
 485         * during conversion of sliced VBI data into MPEG Priv Stream 1 packets.
 486         * We don't need to save state here, but the array may have been a bit
 487         * too big (2304 bytes) to alloc from the stack.
 488         */
 489        struct v4l2_sliced_vbi_data sliced_data[36];
 490
 491        /*
 492         * A ring buffer of driver-generated MPEG-2 PS
 493         * Program Pack/Private Stream 1 packets for sliced VBI data insertion
 494         * into the MPEG PS stream.
 495         *
 496         * In each sliced_mpeg_data[] buffer is:
 497         *      16 byte MPEG-2 PS Program Pack Header
 498         *      16 byte MPEG-2 Private Stream 1 PES Header
 499         *       4 byte magic number: "itv0" or "ITV0"
 500         *       4 byte first  field line mask, if "itv0"
 501         *       4 byte second field line mask, if "itv0"
 502         *      36 lines, if "ITV0"; or <36 lines, if "itv0"; of sliced VBI data
 503         *
 504         *      Each line in the payload is
 505         *       1 byte line header derived from the SDID (WSS, CC, VPS, etc.)
 506         *      42 bytes of line data
 507         *
 508         * That's a maximum 1552 bytes of payload in the Private Stream 1 packet
 509         * which is the payload size a PVR-350 (CX23415) MPEG decoder will
 510         * accept for VBI data. So, including the headers, it's a maximum 1584
 511         * bytes total.
 512         */
 513#define CX18_SLICED_MPEG_DATA_MAXSZ     1584
 514        /* copy_vbi_buf() needs 8 temp bytes on the end for the worst case */
 515#define CX18_SLICED_MPEG_DATA_BUFSZ     (CX18_SLICED_MPEG_DATA_MAXSZ+8)
 516        u8 *sliced_mpeg_data[CX18_VBI_FRAMES];
 517        u32 sliced_mpeg_size[CX18_VBI_FRAMES];
 518
 519        /* Count of Program Pack/Program Stream 1 packets inserted into PS */
 520        u32 inserted_frame;
 521
 522        /*
 523         * A dummy driver stream transfer mdl & buffer with a copy of the next
 524         * sliced_mpeg_data[] buffer for output to userland apps.
 525         * Only used in cx18-fileops.c, but its state needs to persist at times.
 526         */
 527        struct cx18_mdl sliced_mpeg_mdl;
 528        struct cx18_buffer sliced_mpeg_buf;
 529};
 530
 531/* Per cx23418, per I2C bus private algo callback data */
 532struct cx18_i2c_algo_callback_data {
 533        struct cx18 *cx;
 534        int bus_index;   /* 0 or 1 for the cx23418's 1st or 2nd I2C bus */
 535};
 536
 537#define CX18_MAX_MMIO_WR_RETRIES 10
 538
 539/* Struct to hold info about cx18 cards */
 540struct cx18 {
 541        int instance;
 542        struct pci_dev *pci_dev;
 543        struct v4l2_device v4l2_dev;
 544        struct v4l2_subdev *sd_av;     /* A/V decoder/digitizer sub-device */
 545        struct v4l2_subdev *sd_extmux; /* External multiplexer sub-dev */
 546
 547        const struct cx18_card *card;   /* card information */
 548        const char *card_name;  /* full name of the card */
 549        const struct cx18_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
 550        u8 is_50hz;
 551        u8 is_60hz;
 552        u8 nof_inputs;          /* number of video inputs */
 553        u8 nof_audio_inputs;    /* number of audio inputs */
 554        u32 v4l2_cap;           /* V4L2 capabilities of card */
 555        u32 hw_flags;           /* Hardware description of the board */
 556        unsigned int free_mdl_idx;
 557        struct cx18_scb __iomem *scb; /* pointer to SCB */
 558        struct mutex epu2apu_mb_lock; /* protect driver to chip mailbox in SCB*/
 559        struct mutex epu2cpu_mb_lock; /* protect driver to chip mailbox in SCB*/
 560
 561        struct cx18_av_state av_state;
 562
 563        /* codec settings */
 564        struct cx2341x_mpeg_params params;
 565        u32 filter_mode;
 566        u32 temporal_strength;
 567        u32 spatial_strength;
 568
 569        /* dualwatch */
 570        unsigned long dualwatch_jiffies;
 571        u32 dualwatch_stereo_mode;
 572
 573        struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 574        struct cx18_options options;    /* User options */
 575        int stream_buffers[CX18_MAX_STREAMS]; /* # of buffers for each stream */
 576        int stream_buf_size[CX18_MAX_STREAMS]; /* Stream buffer size */
 577        struct cx18_stream streams[CX18_MAX_STREAMS];   /* Stream data */
 578        struct snd_cx18_card *alsa; /* ALSA interface for PCM capture stream */
 579        void (*pcm_announce_callback)(struct snd_cx18_card *card, u8 *pcm_data,
 580                                      size_t num_bytes);
 581
 582        unsigned long i_flags;  /* global cx18 flags */
 583        atomic_t ana_capturing; /* count number of active analog capture streams */
 584        atomic_t tot_capturing; /* total count number of active capture streams */
 585        int search_pack_header;
 586
 587        int open_id;            /* incremented each time an open occurs, used as
 588                                   unique ID. Starts at 1, so 0 can be used as
 589                                   uninitialized value in the stream->id. */
 590
 591        u32 base_addr;
 592        struct v4l2_prio_state prio;
 593
 594        u8 card_rev;
 595        void __iomem *enc_mem, *reg_mem;
 596
 597        struct vbi_info vbi;
 598
 599        u64 mpg_data_received;
 600        u64 vbi_data_inserted;
 601
 602        wait_queue_head_t mb_apu_waitq;
 603        wait_queue_head_t mb_cpu_waitq;
 604        wait_queue_head_t cap_w;
 605        /* when the current DMA is finished this queue is woken up */
 606        wait_queue_head_t dma_waitq;
 607
 608        u32 sw1_irq_mask;
 609        u32 sw2_irq_mask;
 610        u32 hw2_irq_mask;
 611
 612        struct workqueue_struct *in_work_queue;
 613        char in_workq_name[11]; /* "cx18-NN-in" */
 614        struct cx18_in_work_order in_work_order[CX18_MAX_IN_WORK_ORDERS];
 615        char epu_debug_str[256]; /* CX18_EPU_DEBUG is rare: use shared space */
 616
 617        struct workqueue_struct *out_work_queue;
 618        char out_workq_name[12]; /* "cx18-NN-out" */
 619
 620        /* i2c */
 621        struct i2c_adapter i2c_adap[2];
 622        struct i2c_algo_bit_data i2c_algo[2];
 623        struct cx18_i2c_algo_callback_data i2c_algo_cb_data[2];
 624
 625        struct IR_i2c_init_data ir_i2c_init_data;
 626
 627        /* gpio */
 628        u32 gpio_dir;
 629        u32 gpio_val;
 630        struct mutex gpio_lock;
 631        struct v4l2_subdev sd_gpiomux;
 632        struct v4l2_subdev sd_resetctrl;
 633
 634        /* v4l2 and User settings */
 635
 636        /* codec settings */
 637        u32 audio_input;
 638        u32 active_input;
 639        v4l2_std_id std;
 640        v4l2_std_id tuner_std;  /* The norm of the tuner (fixed) */
 641
 642        /* Used for cx18-alsa module loading */
 643        struct work_struct request_module_wk;
 644};
 645
 646static inline struct cx18 *to_cx18(struct v4l2_device *v4l2_dev)
 647{
 648        return container_of(v4l2_dev, struct cx18, v4l2_dev);
 649}
 650
 651/* cx18 extensions to be loaded */
 652extern int (*cx18_ext_init)(struct cx18 *);
 653
 654/* Globals */
 655extern int cx18_first_minor;
 656
 657/*==============Prototypes==================*/
 658
 659/* Return non-zero if a signal is pending */
 660int cx18_msleep_timeout(unsigned int msecs, int intr);
 661
 662/* Read Hauppauge eeprom */
 663struct tveeprom; /* forward reference */
 664void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv);
 665
 666/* First-open initialization: load firmware, etc. */
 667int cx18_init_on_first_open(struct cx18 *cx);
 668
 669/* Test if the current VBI mode is raw (1) or sliced (0) */
 670static inline int cx18_raw_vbi(const struct cx18 *cx)
 671{
 672        return cx->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
 673}
 674
 675/* Call the specified callback for all subdevs with a grp_id bit matching the
 676 * mask in hw (if 0, then match them all). Ignore any errors. */
 677#define cx18_call_hw(cx, hw, o, f, args...) \
 678        __v4l2_device_call_subdevs(&(cx)->v4l2_dev, \
 679                                   !(hw) || (sd->grp_id & (hw)), o, f , ##args)
 680
 681#define cx18_call_all(cx, o, f, args...) cx18_call_hw(cx, 0, o, f , ##args)
 682
 683/* Call the specified callback for all subdevs with a grp_id bit matching the
 684 * mask in hw (if 0, then match them all). If the callback returns an error
 685 * other than 0 or -ENOIOCTLCMD, then return with that error code. */
 686#define cx18_call_hw_err(cx, hw, o, f, args...) \
 687        __v4l2_device_call_subdevs_until_err( \
 688                   &(cx)->v4l2_dev, !(hw) || (sd->grp_id & (hw)), o, f , ##args)
 689
 690#define cx18_call_all_err(cx, o, f, args...) \
 691        cx18_call_hw_err(cx, 0, o, f , ##args)
 692
 693#endif /* CX18_DRIVER_H */
 694
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.