drivers/media/pci/ivtv/ivtv-driver.h

   1 /*
   2     ivtv driver internal defines and structures
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
   5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #ifndef IVTV_DRIVER_H
  23 #define IVTV_DRIVER_H
  24
  25 /* Internal header for ivtv project:
  26  * Driver for the cx23415/6 chip.
  27  * Author: Kevin Thayer (nufan_wfk at yahoo.com)
  28  * License: GPL
  29  * http://www.ivtvdriver.org
  30  *
  31  * -----
  32  * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
  33  *                      and Takeru KOMORIYA<komoriya@paken.org>
  34  *
  35  * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
  36  *                using information provided by Jiun-Kuei Jung @ AVerMedia.
  37  */
  38
  39 #include <linux/module.h>
  40 #include <linux/init.h>
  41 #include <linux/delay.h>
  42 #include <linux/sched.h>
  43 #include <linux/fs.h>
  44 #include <linux/pci.h>
  45 #include <linux/interrupt.h>
  46 #include <linux/spinlock.h>
  47 #include <linux/i2c.h>
  48 #include <linux/i2c-algo-bit.h>
  49 #include <linux/list.h>
  50 #include <linux/unistd.h>
  51 #include <linux/pagemap.h>
  52 #include <linux/scatterlist.h>
  53 #include <linux/kthread.h>
  54 #include <linux/mutex.h>
  55 #include <linux/slab.h>
  56 #include <linux/uaccess.h>
  57 #include <asm/byteorder.h>
  58
  59 #include <linux/dvb/video.h>
  60 #include <linux/dvb/audio.h>
  61 #include <media/v4l2-common.h>
  62 #include <media/v4l2-ioctl.h>
  63 #include <media/v4l2-ctrls.h>
  64 #include <media/v4l2-device.h>
  65 #include <media/v4l2-fh.h>
  66 #include <media/tuner.h>
  67 #include <media/drv-intf/cx2341x.h>
  68 #include <media/i2c/ir-kbd-i2c.h>
  69
  70 #include <linux/ivtv.h>
  71
  72 /* Memory layout */
  73 #define IVTV_ENCODER_OFFSET     0x00000000
  74 #define IVTV_ENCODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  75 #define IVTV_DECODER_OFFSET     0x01000000
  76 #define IVTV_DECODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  77 #define IVTV_REG_OFFSET         0x02000000
  78 #define IVTV_REG_SIZE           0x00010000
  79
  80 /* Maximum ivtv driver instances. Some people have a huge number of
  81    capture cards, so set this to a high value. */
  82 #define IVTV_MAX_CARDS 32
  83
  84 #define IVTV_ENC_STREAM_TYPE_MPG  0
  85 #define IVTV_ENC_STREAM_TYPE_YUV  1
  86 #define IVTV_ENC_STREAM_TYPE_VBI  2
  87 #define IVTV_ENC_STREAM_TYPE_PCM  3
  88 #define IVTV_ENC_STREAM_TYPE_RAD  4
  89 #define IVTV_DEC_STREAM_TYPE_MPG  5
  90 #define IVTV_DEC_STREAM_TYPE_VBI  6
  91 #define IVTV_DEC_STREAM_TYPE_VOUT 7
  92 #define IVTV_DEC_STREAM_TYPE_YUV  8
  93 #define IVTV_MAX_STREAMS          9
  94
  95 #define IVTV_DMA_SG_OSD_ENT     (2883584/PAGE_SIZE)     /* sg entities */
  96
  97 /* DMA Registers */
  98 #define IVTV_REG_DMAXFER        (0x0000)
  99 #define IVTV_REG_DMASTATUS      (0x0004)
 100 #define IVTV_REG_DECDMAADDR     (0x0008)
 101 #define IVTV_REG_ENCDMAADDR     (0x000c)
 102 #define IVTV_REG_DMACONTROL     (0x0010)
 103 #define IVTV_REG_IRQSTATUS      (0x0040)
 104 #define IVTV_REG_IRQMASK        (0x0048)
 105
 106 /* Setup Registers */
 107 #define IVTV_REG_ENC_SDRAM_REFRESH      (0x07F8)
 108 #define IVTV_REG_ENC_SDRAM_PRECHARGE    (0x07FC)
 109 #define IVTV_REG_DEC_SDRAM_REFRESH      (0x08F8)
 110 #define IVTV_REG_DEC_SDRAM_PRECHARGE    (0x08FC)
 111 #define IVTV_REG_VDM                    (0x2800)
 112 #define IVTV_REG_AO                     (0x2D00)
 113 #define IVTV_REG_BYTEFLUSH              (0x2D24)
 114 #define IVTV_REG_SPU                    (0x9050)
 115 #define IVTV_REG_HW_BLOCKS              (0x9054)
 116 #define IVTV_REG_VPU                    (0x9058)
 117 #define IVTV_REG_APU                    (0xA064)
 118
 119 /* Other registers */
 120 #define IVTV_REG_DEC_LINE_FIELD         (0x28C0)
 121
 122 /* debugging */
 123 extern int ivtv_debug;
 124 #ifdef CONFIG_VIDEO_ADV_DEBUG
 125 extern int ivtv_fw_debug;
 126 #endif
 127
 128 #define IVTV_DBGFLG_WARN    (1 << 0)
 129 #define IVTV_DBGFLG_INFO    (1 << 1)
 130 #define IVTV_DBGFLG_MB      (1 << 2)
 131 #define IVTV_DBGFLG_IOCTL   (1 << 3)
 132 #define IVTV_DBGFLG_FILE    (1 << 4)
 133 #define IVTV_DBGFLG_DMA     (1 << 5)
 134 #define IVTV_DBGFLG_IRQ     (1 << 6)
 135 #define IVTV_DBGFLG_DEC     (1 << 7)
 136 #define IVTV_DBGFLG_YUV     (1 << 8)
 137 #define IVTV_DBGFLG_I2C     (1 << 9)
 138 /* Flag to turn on high volume debugging */
 139 #define IVTV_DBGFLG_HIGHVOL (1 << 10)
 140
 141 #define IVTV_DEBUG(x, type, fmt, args...) \
 142         do { \
 143                 if ((x) & ivtv_debug) \
 144                         v4l2_info(&itv->v4l2_dev, " " type ": " fmt , ##args);  \
 145         } while (0)
 146 #define IVTV_DEBUG_WARN(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 147 #define IVTV_DEBUG_INFO(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 148 #define IVTV_DEBUG_MB(fmt, args...)    IVTV_DEBUG(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 149 #define IVTV_DEBUG_DMA(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 150 #define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 151 #define IVTV_DEBUG_FILE(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 152 #define IVTV_DEBUG_I2C(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 153 #define IVTV_DEBUG_IRQ(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 154 #define IVTV_DEBUG_DEC(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 155 #define IVTV_DEBUG_YUV(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 156
 157 #define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 158         do { \
 159                 if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL))   \
 160                         v4l2_info(&itv->v4l2_dev, " " type ": " fmt , ##args);  \
 161         } while (0)
 162 #define IVTV_DEBUG_HI_WARN(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 163 #define IVTV_DEBUG_HI_INFO(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 164 #define IVTV_DEBUG_HI_MB(fmt, args...)    IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 165 #define IVTV_DEBUG_HI_DMA(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 166 #define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 167 #define IVTV_DEBUG_HI_FILE(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 168 #define IVTV_DEBUG_HI_I2C(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 169 #define IVTV_DEBUG_HI_IRQ(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 170 #define IVTV_DEBUG_HI_DEC(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 171 #define IVTV_DEBUG_HI_YUV(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 172
 173 /* Standard kernel messages */
 174 #define IVTV_ERR(fmt, args...)      v4l2_err(&itv->v4l2_dev, fmt , ## args)
 175 #define IVTV_WARN(fmt, args...)     v4l2_warn(&itv->v4l2_dev, fmt , ## args)
 176 #define IVTV_INFO(fmt, args...)     v4l2_info(&itv->v4l2_dev, fmt , ## args)
 177
 178 /* output modes (cx23415 only) */
 179 #define OUT_NONE        0
 180 #define OUT_MPG         1
 181 #define OUT_YUV         2
 182 #define OUT_UDMA_YUV    3
 183 #define OUT_PASSTHROUGH 4
 184
 185 #define IVTV_MAX_PGM_INDEX (400)
 186
 187 /* Default I2C SCL period in microseconds */
 188 #define IVTV_DEFAULT_I2C_CLOCK_PERIOD   20
 189
 190 struct ivtv_options {
 191         int kilobytes[IVTV_MAX_STREAMS];        /* size in kilobytes of each stream */
 192         int cardtype;                           /* force card type on load */
 193         int tuner;                              /* set tuner on load */
 194         int radio;                              /* enable/disable radio */
 195         int newi2c;                             /* new I2C algorithm */
 196         int i2c_clock_period;                   /* period of SCL for I2C bus */
 197 };
 198
 199 /* ivtv-specific mailbox template */
 200 struct ivtv_mailbox {
 201         u32 flags;
 202         u32 cmd;
 203         u32 retval;
 204         u32 timeout;
 205         u32 data[CX2341X_MBOX_MAX_DATA];
 206 };
 207
 208 struct ivtv_api_cache {
 209         unsigned long last_jiffies;             /* when last command was issued */
 210         u32 data[CX2341X_MBOX_MAX_DATA];        /* last sent api data */
 211 };
 212
 213 struct ivtv_mailbox_data {
 214         volatile struct ivtv_mailbox __iomem *mbox;
 215         /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
 216            If the bit is set, then the corresponding mailbox is in use by the driver. */
 217         unsigned long busy;
 218         u8 max_mbox;
 219 };
 220
 221 /* per-buffer bit flags */
 222 #define IVTV_F_B_NEED_BUF_SWAP  (1 << 0)        /* this buffer should be byte swapped */
 223
 224 /* per-stream, s_flags */
 225 #define IVTV_F_S_DMA_PENDING    0       /* this stream has pending DMA */
 226 #define IVTV_F_S_DMA_HAS_VBI    1       /* the current DMA request also requests VBI data */
 227 #define IVTV_F_S_NEEDS_DATA     2       /* this decoding stream needs more data */
 228
 229 #define IVTV_F_S_CLAIMED        3       /* this stream is claimed */
 230 #define IVTV_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 231 #define IVTV_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 232 #define IVTV_F_S_PASSTHROUGH    6       /* this stream is in passthrough mode */
 233 #define IVTV_F_S_STREAMOFF      7       /* signal end of stream EOS */
 234 #define IVTV_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 235
 236 #define IVTV_F_S_PIO_PENDING    9       /* this stream has pending PIO */
 237 #define IVTV_F_S_PIO_HAS_VBI    1       /* the current PIO request also requests VBI data */
 238
 239 /* per-ivtv, i_flags */
 240 #define IVTV_F_I_DMA               0    /* DMA in progress */
 241 #define IVTV_F_I_UDMA              1    /* UDMA in progress */
 242 #define IVTV_F_I_UDMA_PENDING      2    /* UDMA pending */
 243 #define IVTV_F_I_SPEED_CHANGE      3    /* a speed change is in progress */
 244 #define IVTV_F_I_EOS               4    /* end of encoder stream reached */
 245 #define IVTV_F_I_RADIO_USER        5    /* the radio tuner is selected */
 246 #define IVTV_F_I_DIG_RST           6    /* reset digitizer */
 247 #define IVTV_F_I_DEC_YUV           7    /* YUV instead of MPG is being decoded */
 248 #define IVTV_F_I_UPDATE_CC         9    /* CC should be updated */
 249 #define IVTV_F_I_UPDATE_WSS        10   /* WSS should be updated */
 250 #define IVTV_F_I_UPDATE_VPS        11   /* VPS should be updated */
 251 #define IVTV_F_I_DECODING_YUV      12   /* this stream is YUV frame decoding */
 252 #define IVTV_F_I_ENC_PAUSED        13   /* the encoder is paused */
 253 #define IVTV_F_I_VALID_DEC_TIMINGS 14   /* last_dec_timing is valid */
 254 #define IVTV_F_I_HAVE_WORK         15   /* used in the interrupt handler: there is work to be done */
 255 #define IVTV_F_I_WORK_HANDLER_VBI  16   /* there is work to be done for VBI */
 256 #define IVTV_F_I_WORK_HANDLER_YUV  17   /* there is work to be done for YUV */
 257 #define IVTV_F_I_WORK_HANDLER_PIO  18   /* there is work to be done for PIO */
 258 #define IVTV_F_I_PIO               19   /* PIO in progress */
 259 #define IVTV_F_I_DEC_PAUSED        20   /* the decoder is paused */
 260 #define IVTV_F_I_INITED            21   /* set after first open */
 261 #define IVTV_F_I_FAILED            22   /* set if first open failed */
 262 #define IVTV_F_I_WORK_HANDLER_PCM  23   /* there is work to be done for PCM */
 263
 264 /* Event notifications */
 265 #define IVTV_F_I_EV_DEC_STOPPED    28   /* decoder stopped event */
 266 #define IVTV_F_I_EV_VSYNC          29   /* VSYNC event */
 267 #define IVTV_F_I_EV_VSYNC_FIELD    30   /* VSYNC event field (0 = first, 1 = second field) */
 268 #define IVTV_F_I_EV_VSYNC_ENABLED  31   /* VSYNC event enabled */
 269
 270 /* Scatter-Gather array element, used in DMA transfers */
 271 struct ivtv_sg_element {
 272         __le32 src;
 273         __le32 dst;
 274         __le32 size;
 275 };
 276
 277 struct ivtv_sg_host_element {
 278         u32 src;
 279         u32 dst;
 280         u32 size;
 281 };
 282
 283 struct ivtv_user_dma {
 284         struct mutex lock;
 285         int page_count;
 286         struct page *map[IVTV_DMA_SG_OSD_ENT];
 287         /* Needed when dealing with highmem userspace buffers */
 288         struct page *bouncemap[IVTV_DMA_SG_OSD_ENT];
 289
 290         /* Base Dev SG Array for cx23415/6 */
 291         struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT];
 292         dma_addr_t SG_handle;
 293         int SG_length;
 294
 295         /* SG List of Buffers */
 296         struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT];
 297 };
 298
 299 struct ivtv_dma_page_info {
 300         unsigned long uaddr;
 301         unsigned long first;
 302         unsigned long last;
 303         unsigned int offset;
 304         unsigned int tail;
 305         int page_count;
 306 };
 307
 308 struct ivtv_buffer {
 309         struct list_head list;
 310         dma_addr_t dma_handle;
 311         unsigned short b_flags;
 312         unsigned short dma_xfer_cnt;
 313         char *buf;
 314         u32 bytesused;
 315         u32 readpos;
 316 };
 317
 318 struct ivtv_queue {
 319         struct list_head list;          /* the list of buffers in this queue */
 320         u32 buffers;                    /* number of buffers in this queue */
 321         u32 length;                     /* total number of bytes of available buffer space */
 322         u32 bytesused;                  /* total number of bytes used in this queue */
 323 };
 324
 325 struct ivtv;                            /* forward reference */
 326
 327 struct ivtv_stream {
 328         /* These first four fields are always set, even if the stream
 329            is not actually created. */
 330         struct video_device vdev;       /* vdev.v4l2_dev is NULL if there is no device */
 331         struct ivtv *itv;               /* for ease of use */
 332         const char *name;               /* name of the stream */
 333         int type;                       /* stream type */
 334         u32 caps;                       /* V4L2 capabilities */
 335
 336         struct v4l2_fh *fh;             /* pointer to the streaming filehandle */
 337         spinlock_t qlock;               /* locks access to the queues */
 338         unsigned long s_flags;          /* status flags, see above */
 339         int dma;                        /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
 340         u32 pending_offset;
 341         u32 pending_backup;
 342         u64 pending_pts;
 343
 344         u32 dma_offset;
 345         u32 dma_backup;
 346         u64 dma_pts;
 347
 348         int subtype;
 349         wait_queue_head_t waitq;
 350         u32 dma_last_offset;
 351
 352         /* Buffer Stats */
 353         u32 buffers;
 354         u32 buf_size;
 355         u32 buffers_stolen;
 356
 357         /* Buffer Queues */
 358         struct ivtv_queue q_free;       /* free buffers */
 359         struct ivtv_queue q_full;       /* full buffers */
 360         struct ivtv_queue q_io;         /* waiting for I/O */
 361         struct ivtv_queue q_dma;        /* waiting for DMA */
 362         struct ivtv_queue q_predma;     /* waiting for DMA */
 363
 364         /* DMA xfer counter, buffers belonging to the same DMA
 365            xfer will have the same dma_xfer_cnt. */
 366         u16 dma_xfer_cnt;
 367
 368         /* Base Dev SG Array for cx23415/6 */
 369         struct ivtv_sg_host_element *sg_pending;
 370         struct ivtv_sg_host_element *sg_processing;
 371         struct ivtv_sg_element *sg_dma;
 372         dma_addr_t sg_handle;
 373         int sg_pending_size;
 374         int sg_processing_size;
 375         int sg_processed;
 376
 377         /* SG List of Buffers */
 378         struct scatterlist *SGlist;
 379 };
 380
 381 struct ivtv_open_id {
 382         struct v4l2_fh fh;
 383         int type;                       /* stream type */
 384         int yuv_frames;                 /* 1: started OUT_UDMA_YUV output mode */
 385         struct ivtv *itv;
 386 };
 387
 388 static inline struct ivtv_open_id *fh2id(struct v4l2_fh *fh)
 389 {
 390         return container_of(fh, struct ivtv_open_id, fh);
 391 }
 392
 393 struct yuv_frame_info
 394 {
 395         u32 update;
 396         s32 src_x;
 397         s32 src_y;
 398         u32 src_w;
 399         u32 src_h;
 400         s32 dst_x;
 401         s32 dst_y;
 402         u32 dst_w;
 403         u32 dst_h;
 404         s32 pan_x;
 405         s32 pan_y;
 406         u32 vis_w;
 407         u32 vis_h;
 408         u32 interlaced_y;
 409         u32 interlaced_uv;
 410         s32 tru_x;
 411         u32 tru_w;
 412         u32 tru_h;
 413         u32 offset_y;
 414         s32 lace_mode;
 415         u32 sync_field;
 416         u32 delay;
 417         u32 interlaced;
 418 };
 419
 420 #define IVTV_YUV_MODE_INTERLACED        0x00
 421 #define IVTV_YUV_MODE_PROGRESSIVE       0x01
 422 #define IVTV_YUV_MODE_AUTO              0x02
 423 #define IVTV_YUV_MODE_MASK              0x03
 424
 425 #define IVTV_YUV_SYNC_EVEN              0x00
 426 #define IVTV_YUV_SYNC_ODD               0x04
 427 #define IVTV_YUV_SYNC_MASK              0x04
 428
 429 #define IVTV_YUV_BUFFERS 8
 430
 431 struct yuv_playback_info
 432 {
 433         u32 reg_2834;
 434         u32 reg_2838;
 435         u32 reg_283c;
 436         u32 reg_2840;
 437         u32 reg_2844;
 438         u32 reg_2848;
 439         u32 reg_2854;
 440         u32 reg_285c;
 441         u32 reg_2864;
 442
 443         u32 reg_2870;
 444         u32 reg_2874;
 445         u32 reg_2890;
 446         u32 reg_2898;
 447         u32 reg_289c;
 448
 449         u32 reg_2918;
 450         u32 reg_291c;
 451         u32 reg_2920;
 452         u32 reg_2924;
 453         u32 reg_2928;
 454         u32 reg_292c;
 455         u32 reg_2930;
 456
 457         u32 reg_2934;
 458
 459         u32 reg_2938;
 460         u32 reg_293c;
 461         u32 reg_2940;
 462         u32 reg_2944;
 463         u32 reg_2948;
 464         u32 reg_294c;
 465         u32 reg_2950;
 466         u32 reg_2954;
 467         u32 reg_2958;
 468         u32 reg_295c;
 469         u32 reg_2960;
 470         u32 reg_2964;
 471         u32 reg_2968;
 472         u32 reg_296c;
 473
 474         u32 reg_2970;
 475
 476         int v_filter_1;
 477         int v_filter_2;
 478         int h_filter;
 479
 480         u8 track_osd; /* Should yuv output track the OSD size & position */
 481
 482         u32 osd_x_offset;
 483         u32 osd_y_offset;
 484
 485         u32 osd_x_pan;
 486         u32 osd_y_pan;
 487
 488         u32 osd_vis_w;
 489         u32 osd_vis_h;
 490
 491         u32 osd_full_w;
 492         u32 osd_full_h;
 493
 494         int decode_height;
 495
 496         int lace_mode;
 497         int lace_threshold;
 498         int lace_sync_field;
 499
 500         atomic_t next_dma_frame;
 501         atomic_t next_fill_frame;
 502
 503         u32 yuv_forced_update;
 504         int update_frame;
 505
 506         u8 fields_lapsed;   /* Counter used when delaying a frame */
 507
 508         struct yuv_frame_info new_frame_info[IVTV_YUV_BUFFERS];
 509         struct yuv_frame_info old_frame_info;
 510         struct yuv_frame_info old_frame_info_args;
 511
 512         void *blanking_ptr;
 513         dma_addr_t blanking_dmaptr;
 514
 515         int stream_size;
 516
 517         u8 draw_frame; /* PVR350 buffer to draw into */
 518         u8 max_frames_buffered; /* Maximum number of frames to buffer */
 519
 520         struct v4l2_rect main_rect;
 521         u32 v4l2_src_w;
 522         u32 v4l2_src_h;
 523
 524         u8 running; /* Have any frames been displayed */
 525 };
 526
 527 #define IVTV_VBI_FRAMES 32
 528
 529 /* VBI data */
 530 struct vbi_cc {
 531         u8 odd[2];      /* two-byte payload of odd field */
 532         u8 even[2];     /* two-byte payload of even field */;
 533 };
 534
 535 struct vbi_vps {
 536         u8 data[5];     /* five-byte VPS payload */
 537 };
 538
 539 struct vbi_info {
 540         /* VBI general data, does not change during streaming */
 541
 542         u32 raw_decoder_line_size;              /* raw VBI line size from digitizer */
 543         u8 raw_decoder_sav_odd_field;           /* raw VBI Start Active Video digitizer code of odd field */
 544         u8 raw_decoder_sav_even_field;          /* raw VBI Start Active Video digitizer code of even field */
 545         u32 sliced_decoder_line_size;           /* sliced VBI line size from digitizer */
 546         u8 sliced_decoder_sav_odd_field;        /* sliced VBI Start Active Video digitizer code of odd field */
 547         u8 sliced_decoder_sav_even_field;       /* sliced VBI Start Active Video digitizer code of even field */
 548
 549         u32 start[2];                           /* start of first VBI line in the odd/even fields */
 550         u32 count;                              /* number of VBI lines per field */
 551         u32 raw_size;                           /* size of raw VBI line from the digitizer */
 552         u32 sliced_size;                        /* size of sliced VBI line from the digitizer */
 553
 554         u32 dec_start;                          /* start in decoder memory of VBI re-insertion buffers */
 555         u32 enc_start;                          /* start in encoder memory of VBI capture buffers */
 556         u32 enc_size;                           /* size of VBI capture area */
 557         int fpi;                                /* number of VBI frames per interrupt */
 558
 559         struct v4l2_format in;                  /* current VBI capture format */
 560         struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */
 561         int insert_mpeg;                        /* if non-zero, then embed VBI data in MPEG stream */
 562
 563         /* Raw VBI compatibility hack */
 564
 565         u32 frame;                              /* frame counter hack needed for backwards compatibility
 566                                                    of old VBI software */
 567
 568         /* Sliced VBI output data */
 569
 570         struct vbi_cc cc_payload[256];          /* sliced VBI CC payload array: it is an array to
 571                                                    prevent dropping CC data if they couldn't be
 572                                                    processed fast enough */
 573         int cc_payload_idx;                     /* index in cc_payload */
 574         u8 cc_missing_cnt;                      /* counts number of frames without CC for passthrough mode */
 575         int wss_payload;                        /* sliced VBI WSS payload */
 576         u8 wss_missing_cnt;                     /* counts number of frames without WSS for passthrough mode */
 577         struct vbi_vps vps_payload;             /* sliced VBI VPS payload */
 578
 579         /* Sliced VBI capture data */
 580
 581         struct v4l2_sliced_vbi_data sliced_data[36];    /* sliced VBI storage for VBI encoder stream */
 582         struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */
 583
 584         /* VBI Embedding data */
 585
 586         /* Buffer for VBI data inserted into MPEG stream.
 587            The first byte is a dummy byte that's never used.
 588            The next 16 bytes contain the MPEG header for the VBI data,
 589            the remainder is the actual VBI data.
 590            The max size accepted by the MPEG VBI reinsertion turns out
 591            to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
 592            where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
 593            a single line header byte and 2 * 18 is the number of VBI lines per frame.
 594
 595            However, it seems that the data must be 1K aligned, so we have to
 596            pad the data until the 1 or 2 K boundary.
 597
 598            This pointer array will allocate 2049 bytes to store each VBI frame. */
 599         u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
 600         u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
 601         struct ivtv_buffer sliced_mpeg_buf;     /* temporary buffer holding data from sliced_mpeg_data */
 602         u32 inserted_frame;                     /* index in sliced_mpeg_size of next sliced data
 603                                                    to be inserted in the MPEG stream */
 604 };
 605
 606 /* forward declaration of struct defined in ivtv-cards.h */
 607 struct ivtv_card;
 608
 609 /* Struct to hold info about ivtv cards */
 610 struct ivtv {
 611         /* General fixed card data */
 612         struct pci_dev *pdev;           /* PCI device */
 613         const struct ivtv_card *card;   /* card information */
 614         const char *card_name;          /* full name of the card */
 615         const struct ivtv_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
 616         u8 has_cx23415;                 /* 1 if it is a cx23415 based card, 0 for cx23416 */
 617         u8 pvr150_workaround;           /* 1 if the cx25840 needs to workaround a PVR150 bug */
 618         u8 nof_inputs;                  /* number of video inputs */
 619         u8 nof_audio_inputs;            /* number of audio inputs */
 620         u32 v4l2_cap;                   /* V4L2 capabilities of card */
 621         u32 hw_flags;                   /* hardware description of the board */
 622         v4l2_std_id tuner_std;          /* the norm of the card's tuner (fixed) */
 623         struct v4l2_subdev *sd_video;   /* controlling video decoder subdev */
 624         struct v4l2_subdev *sd_audio;   /* controlling audio subdev */
 625         struct v4l2_subdev *sd_muxer;   /* controlling audio muxer subdev */
 626         resource_size_t base_addr;      /* PCI resource base address */
 627         volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */
 628         volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */
 629         volatile void __iomem *reg_mem; /* pointer to mapped registers */
 630         struct ivtv_options options;    /* user options */
 631
 632         struct v4l2_device v4l2_dev;
 633         struct cx2341x_handler cxhdl;
 634         struct {
 635                 /* PTS/Frame count control cluster */
 636                 struct v4l2_ctrl *ctrl_pts;
 637                 struct v4l2_ctrl *ctrl_frame;
 638         };
 639         struct {
 640                 /* Audio Playback control cluster */
 641                 struct v4l2_ctrl *ctrl_audio_playback;
 642                 struct v4l2_ctrl *ctrl_audio_multilingual_playback;
 643         };
 644         struct v4l2_ctrl_handler hdl_gpio;
 645         struct v4l2_subdev sd_gpio;     /* GPIO sub-device */
 646         u16 instance;
 647
 648         /* High-level state info */
 649         unsigned long i_flags;          /* global ivtv flags */
 650         u8 is_50hz;                     /* 1 if the current capture standard is 50 Hz */
 651         u8 is_60hz                      /* 1 if the current capture standard is 60 Hz */;
 652         u8 is_out_50hz                  /* 1 if the current TV output standard is 50 Hz */;
 653         u8 is_out_60hz                  /* 1 if the current TV output standard is 60 Hz */;
 654         int output_mode;                /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
 655         u32 audio_input;                /* current audio input */
 656         u32 active_input;               /* current video input */
 657         u32 active_output;              /* current video output */
 658         v4l2_std_id std;                /* current capture TV standard */
 659         v4l2_std_id std_out;            /* current TV output standard */
 660         u8 audio_stereo_mode;           /* decoder setting how to handle stereo MPEG audio */
 661         u8 audio_bilingual_mode;        /* decoder setting how to handle bilingual MPEG audio */
 662
 663         /* Locking */
 664         spinlock_t lock;                /* lock access to this struct */
 665         struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 666
 667         /* Streams */
 668         int stream_buf_size[IVTV_MAX_STREAMS];          /* stream buffer size */
 669         struct ivtv_stream streams[IVTV_MAX_STREAMS];   /* stream data */
 670         atomic_t capturing;             /* count number of active capture streams */
 671         atomic_t decoding;              /* count number of active decoding streams */
 672
 673         /* ALSA interface for PCM capture stream */
 674         struct snd_ivtv_card *alsa;
 675         void (*pcm_announce_callback)(struct snd_ivtv_card *card, u8 *pcm_data,
 676                                       size_t num_bytes);
 677
 678         /* Used for ivtv-alsa module loading */
 679         struct work_struct request_module_wk;
 680
 681         /* Interrupts & DMA */
 682         u32 irqmask;                    /* active interrupts */
 683         u32 irq_rr_idx;                 /* round-robin stream index */
 684         struct kthread_worker irq_worker;               /* kthread worker for PIO/YUV/VBI actions */
 685         struct task_struct *irq_worker_task;            /* task for irq_worker */
 686         struct kthread_work irq_work;   /* kthread work entry */
 687         spinlock_t dma_reg_lock;        /* lock access to DMA engine registers */
 688         int cur_dma_stream;             /* index of current stream doing DMA (-1 if none) */
 689         int cur_pio_stream;             /* index of current stream doing PIO (-1 if none) */
 690         u32 dma_data_req_offset;        /* store offset in decoder memory of current DMA request */
 691         u32 dma_data_req_size;          /* store size of current DMA request */
 692         int dma_retries;                /* current DMA retry attempt */
 693         struct ivtv_user_dma udma;      /* user based DMA for OSD */
 694         struct timer_list dma_timer;    /* timer used to catch unfinished DMAs */
 695         u32 last_vsync_field;           /* last seen vsync field */
 696         wait_queue_head_t dma_waitq;    /* wake up when the current DMA is finished */
 697         wait_queue_head_t eos_waitq;    /* wake up when EOS arrives */
 698         wait_queue_head_t event_waitq;  /* wake up when the next decoder event arrives */
 699         wait_queue_head_t vsync_waitq;  /* wake up when the next decoder vsync arrives */
 700
 701
 702         /* Mailbox */
 703         struct ivtv_mailbox_data enc_mbox;              /* encoder mailboxes */
 704         struct ivtv_mailbox_data dec_mbox;              /* decoder mailboxes */
 705         struct ivtv_api_cache api_cache[256];           /* cached API commands */
 706
 707
 708         /* I2C */
 709         struct i2c_adapter i2c_adap;
 710         struct i2c_algo_bit_data i2c_algo;
 711         struct i2c_client i2c_client;
 712         int i2c_state;                  /* i2c bit state */
 713         struct mutex i2c_bus_lock;      /* lock i2c bus */
 714
 715         struct IR_i2c_init_data ir_i2c_init_data;
 716
 717         /* Program Index information */
 718         u32 pgm_info_offset;            /* start of pgm info in encoder memory */
 719         u32 pgm_info_num;               /* number of elements in the pgm cyclic buffer in encoder memory */
 720         u32 pgm_info_write_idx;         /* last index written by the card that was transferred to pgm_info[] */
 721         u32 pgm_info_read_idx;          /* last index in pgm_info read by the application */
 722         struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
 723
 724
 725         /* Miscellaneous */
 726         u32 open_id;                    /* incremented each time an open occurs, is >= 1 */
 727         int search_pack_header;         /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */
 728         int speed;                      /* current playback speed setting */
 729         u8 speed_mute_audio;            /* 1 if audio should be muted when fast forward */
 730         u64 mpg_data_received;          /* number of bytes received from the MPEG stream */
 731         u64 vbi_data_inserted;          /* number of VBI bytes inserted into the MPEG stream */
 732         u32 last_dec_timing[3];         /* cache last retrieved pts/scr/frame values */
 733         unsigned long dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
 734         u32 dualwatch_stereo_mode;      /* current detected dualwatch stereo mode */
 735
 736
 737         /* VBI state info */
 738         struct vbi_info vbi;            /* VBI-specific data */
 739
 740
 741         /* YUV playback */
 742         struct yuv_playback_info yuv_info;              /* YUV playback data */
 743
 744
 745         /* OSD support */
 746         unsigned long osd_video_pbase;
 747         int osd_global_alpha_state;     /* 1 = global alpha is on */
 748         int osd_local_alpha_state;      /* 1 = local alpha is on */
 749         int osd_chroma_key_state;       /* 1 = chroma-keying is on */
 750         u8  osd_global_alpha;           /* current global alpha */
 751         u32 osd_chroma_key;             /* current chroma key */
 752         struct v4l2_rect osd_rect;      /* current OSD position and size */
 753         struct v4l2_rect main_rect;     /* current Main window position and size */
 754         struct osd_info *osd_info;      /* ivtvfb private OSD info */
 755         void (*ivtvfb_restore)(struct ivtv *itv); /* Used for a warm start */
 756 };
 757
 758 static inline struct ivtv *to_ivtv(struct v4l2_device *v4l2_dev)
 759 {
 760         return container_of(v4l2_dev, struct ivtv, v4l2_dev);
 761 }
 762
 763 /* ivtv extensions to be loaded */
 764 extern int (*ivtv_ext_init)(struct ivtv *);
 765
 766 /* Globals */
 767 extern int ivtv_first_minor;
 768
 769 /*==============Prototypes==================*/
 770
 771 /* Hardware/IRQ */
 772 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask);
 773 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask);
 774
 775 /* try to set output mode, return current mode. */
 776 int ivtv_set_output_mode(struct ivtv *itv, int mode);
 777
 778 /* return current output stream based on current mode */
 779 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv);
 780
 781 /* Return non-zero if a signal is pending */
 782 int ivtv_msleep_timeout(unsigned int msecs, int intr);
 783
 784 /* Wait on queue, returns -EINTR if interrupted */
 785 int ivtv_waitq(wait_queue_head_t *waitq);
 786
 787 /* Read Hauppauge eeprom */
 788 struct tveeprom; /* forward reference */
 789 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv);
 790
 791 /* First-open initialization: load firmware, init cx25840, etc. */
 792 int ivtv_init_on_first_open(struct ivtv *itv);
 793
 794 /* Test if the current VBI mode is raw (1) or sliced (0) */
 795 static inline int ivtv_raw_vbi(const struct ivtv *itv)
 796 {
 797         return itv->vbi.in.type == V4L2_BUF_TYPE_VBI_CAPTURE;
 798 }
 799
 800 /* This is a PCI post thing, where if the pci register is not read, then
 801    the write doesn't always take effect right away. By reading back the
 802    register any pending PCI writes will be performed (in order), and so
 803    you can be sure that the writes are guaranteed to be done.
 804
 805    Rarely needed, only in some timing sensitive cases.
 806    Apparently if this is not done some motherboards seem
 807    to kill the firmware and get into the broken state until computer is
 808    rebooted. */
 809 #define write_sync(val, reg) \
 810         do { writel(val, reg); readl(reg); } while (0)
 811
 812 #define read_reg(reg) readl(itv->reg_mem + (reg))
 813 #define write_reg(val, reg) writel(val, itv->reg_mem + (reg))
 814 #define write_reg_sync(val, reg) \
 815         do { write_reg(val, reg); read_reg(reg); } while (0)
 816
 817 #define read_enc(addr) readl(itv->enc_mem + (u32)(addr))
 818 #define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr))
 819 #define write_enc_sync(val, addr) \
 820         do { write_enc(val, addr); read_enc(addr); } while (0)
 821
 822 #define read_dec(addr) readl(itv->dec_mem + (u32)(addr))
 823 #define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr))
 824 #define write_dec_sync(val, addr) \
 825         do { write_dec(val, addr); read_dec(addr); } while (0)
 826
 827 /* Call the specified callback for all subdevs matching hw (if 0, then
 828    match them all). Ignore any errors. */
 829 #define ivtv_call_hw(itv, hw, o, f, args...)                            \
 830         v4l2_device_mask_call_all(&(itv)->v4l2_dev, hw, o, f, ##args)
 831
 832 #define ivtv_call_all(itv, o, f, args...) ivtv_call_hw(itv, 0, o, f , ##args)
 833
 834 /* Call the specified callback for all subdevs matching hw (if 0, then
 835    match them all). If the callback returns an error other than 0 or
 836    -ENOIOCTLCMD, then return with that error code. */
 837 #define ivtv_call_hw_err(itv, hw, o, f, args...)                        \
 838         v4l2_device_mask_call_until_err(&(itv)->v4l2_dev, hw, o, f, ##args)
 839
 840 #define ivtv_call_all_err(itv, o, f, args...) ivtv_call_hw_err(itv, 0, o, f , ##args)
 841
 842 #endif