release/src-rt-6.x.4708/linux/linux-2.6.36/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@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 */
 131 struct 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
 250 extern int cx18_debug;
 251
 252 struct 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
 296 struct 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
 305 struct 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
 319 struct cx18_queue {
 320         struct list_head list;
 321         atomic_t depth;
 322         u32 bytesused;
 323         spinlock_t lock;
 324 };
 325
 326 struct 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
 339 struct cx18;     /* forward reference */
 340 struct 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
 352 struct 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
 365 struct 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
 403 struct 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 */
 411 struct 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  */
 459 static const u32 vbi_active_samples = 1444; /* 4 byte SAV + 720 Y + 720 U/V */
 460 static const u32 vbi_hblank_samples_60Hz = 272; /* 4 byte EAV + 268 anc/fill */
 461 static const u32 vbi_hblank_samples_50Hz = 284; /* 4 byte EAV + 280 anc/fill */
 462
 463 #define CX18_VBI_FRAMES 32
 464
 465 struct 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 */
 532 struct 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 */
 540 struct 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
 646 static 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 */
 652 extern int (*cx18_ext_init)(struct cx18 *);
 653
 654 /* Globals */
 655 extern int cx18_first_minor;
 656
 657 /*==============Prototypes==================*/
 658
 659 /* Return non-zero if a signal is pending */
 660 int cx18_msleep_timeout(unsigned int msecs, int intr);
 661
 662 /* Read Hauppauge eeprom */
 663 struct tveeprom; /* forward reference */
 664 void cx18_read_eeprom(struct cx18 *cx, struct tveeprom *tv);
 665
 666 /* First-open initialization: load firmware, etc. */
 667 int cx18_init_on_first_open(struct cx18 *cx);
 668
 669 /* Test if the current VBI mode is raw (1) or sliced (0) */
 670 static 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 */