linux/drivers/media/video/zoran/zoran_device.c
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   1/*
   2 * Zoran zr36057/zr36067 PCI controller driver, for the
   3 * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
   4 * Media Labs LML33/LML33R10.
   5 *
   6 * This part handles device access (PCI/I2C/codec/...)
   7 *
   8 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
   9 *
  10 * Currently maintained by:
  11 *   Ronald Bultje    <rbultje@ronald.bitfreak.net>
  12 *   Laurent Pinchart <laurent.pinchart@skynet.be>
  13 *   Mailinglist      <mjpeg-users@lists.sf.net>
  14 *
  15 * This program is free software; you can redistribute it and/or modify
  16 * it under the terms of the GNU General Public License as published by
  17 * the Free Software Foundation; either version 2 of the License, or
  18 * (at your option) any later version.
  19 *
  20 * This program is distributed in the hope that it will be useful,
  21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 * GNU General Public License for more details.
  24 *
  25 * You should have received a copy of the GNU General Public License
  26 * along with this program; if not, write to the Free Software
  27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  28 */
  29
  30#include <linux/types.h>
  31#include <linux/kernel.h>
  32#include <linux/module.h>
  33#include <linux/vmalloc.h>
  34
  35#include <linux/interrupt.h>
  36#include <linux/proc_fs.h>
  37#include <linux/i2c.h>
  38#include <linux/i2c-algo-bit.h>
  39#include <linux/videodev2.h>
  40#include <media/v4l2-common.h>
  41#include <linux/spinlock.h>
  42#include <linux/sem.h>
  43
  44#include <linux/pci.h>
  45#include <linux/delay.h>
  46#include <linux/wait.h>
  47
  48#include <asm/byteorder.h>
  49#include <asm/io.h>
  50
  51#include "videocodec.h"
  52#include "zoran.h"
  53#include "zoran_device.h"
  54#include "zoran_card.h"
  55
  56#define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
  57                   ZR36057_ISR_GIRQ1 | \
  58                   ZR36057_ISR_JPEGRepIRQ )
  59
  60static int lml33dpath;          /* default = 0
  61                                 * 1 will use digital path in capture
  62                                 * mode instead of analog. It can be
  63                                 * used for picture adjustments using
  64                                 * tool like xawtv while watching image
  65                                 * on TV monitor connected to the output.
  66                                 * However, due to absence of 75 Ohm
  67                                 * load on Bt819 input, there will be
  68                                 * some image imperfections */
  69
  70module_param(lml33dpath, bool, 0644);
  71MODULE_PARM_DESC(lml33dpath,
  72                 "Use digital path capture mode (on LML33 cards)");
  73
  74static void
  75zr36057_init_vfe (struct zoran *zr);
  76
  77/*
  78 * General Purpose I/O and Guest bus access
  79 */
  80
  81/*
  82 * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  83 * GPIO bit number in the card_info structure is set to 0.
  84 */
  85
  86void
  87GPIO (struct zoran *zr,
  88      int           bit,
  89      unsigned int  value)
  90{
  91        u32 reg;
  92        u32 mask;
  93
  94        /* Make sure the bit number is legal
  95         * A bit number of -1 (lacking) gives a mask of 0,
  96         * making it harmless */
  97        mask = (1 << (24 + bit)) & 0xff000000;
  98        reg = btread(ZR36057_GPPGCR1) & ~mask;
  99        if (value) {
 100                reg |= mask;
 101        }
 102        btwrite(reg, ZR36057_GPPGCR1);
 103        udelay(1);
 104}
 105
 106/*
 107 * Wait til post office is no longer busy
 108 */
 109
 110int
 111post_office_wait (struct zoran *zr)
 112{
 113        u32 por;
 114
 115//      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 116        while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 117                /* wait for something to happen */
 118        }
 119        if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 120                /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 121                dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 122                        por);
 123                return -1;
 124        }
 125
 126        return 0;
 127}
 128
 129int
 130post_office_write (struct zoran *zr,
 131                   unsigned int  guest,
 132                   unsigned int  reg,
 133                   unsigned int  value)
 134{
 135        u32 por;
 136
 137        por =
 138            ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 139            ((reg & 7) << 16) | (value & 0xFF);
 140        btwrite(por, ZR36057_POR);
 141
 142        return post_office_wait(zr);
 143}
 144
 145int
 146post_office_read (struct zoran *zr,
 147                  unsigned int  guest,
 148                  unsigned int  reg)
 149{
 150        u32 por;
 151
 152        por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 153        btwrite(por, ZR36057_POR);
 154        if (post_office_wait(zr) < 0) {
 155                return -1;
 156        }
 157
 158        return btread(ZR36057_POR) & 0xFF;
 159}
 160
 161/*
 162 * detect guests
 163 */
 164
 165static void
 166dump_guests (struct zoran *zr)
 167{
 168        if (zr36067_debug > 2) {
 169                int i, guest[8];
 170
 171                for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 172                        guest[i] = post_office_read(zr, i, 0);
 173                }
 174
 175                printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 176
 177                for (i = 1; i < 8; i++) {
 178                        printk(" 0x%02x", guest[i]);
 179                }
 180                printk("\n");
 181        }
 182}
 183
 184static inline unsigned long
 185get_time (void)
 186{
 187        struct timeval tv;
 188
 189        do_gettimeofday(&tv);
 190        return (1000000 * tv.tv_sec + tv.tv_usec);
 191}
 192
 193void
 194detect_guest_activity (struct zoran *zr)
 195{
 196        int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 197        unsigned long t0, t1;
 198
 199        dump_guests(zr);
 200        printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 201               ZR_DEVNAME(zr));
 202        for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 203                guest0[i] = guest[i] = post_office_read(zr, i, 0);
 204        }
 205
 206        timeout = 0;
 207        j = 0;
 208        t0 = get_time();
 209        while (timeout < 10000) {
 210                udelay(10);
 211                timeout++;
 212                for (i = 1; (i < 8) && (j < 8); i++) {
 213                        res = post_office_read(zr, i, 0);
 214                        if (res != guest[i]) {
 215                                t1 = get_time();
 216                                change[j][0] = (t1 - t0);
 217                                t0 = t1;
 218                                change[j][1] = i;
 219                                change[j][2] = res;
 220                                j++;
 221                                guest[i] = res;
 222                        }
 223                }
 224                if (j >= 8)
 225                        break;
 226        }
 227        printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 228
 229        for (i = 1; i < 8; i++) {
 230                printk(" 0x%02x", guest0[i]);
 231        }
 232        printk("\n");
 233        if (j == 0) {
 234                printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 235                return;
 236        }
 237        for (i = 0; i < j; i++) {
 238                printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 239                       change[i][0], change[i][1], change[i][2]);
 240        }
 241}
 242
 243/*
 244 * JPEG Codec access
 245 */
 246
 247void
 248jpeg_codec_sleep (struct zoran *zr,
 249                  int           sleep)
 250{
 251        GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
 252        if (!sleep) {
 253                dprintk(3,
 254                        KERN_DEBUG
 255                        "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 256                        ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 257                udelay(500);
 258        } else {
 259                dprintk(3,
 260                        KERN_DEBUG
 261                        "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 262                        ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 263                udelay(2);
 264        }
 265}
 266
 267int
 268jpeg_codec_reset (struct zoran *zr)
 269{
 270        /* Take the codec out of sleep */
 271        jpeg_codec_sleep(zr, 0);
 272
 273        if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 274                post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 275                                  0);
 276                udelay(2);
 277        } else {
 278                GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
 279                udelay(2);
 280                GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
 281                udelay(2);
 282        }
 283
 284        return 0;
 285}
 286
 287/*
 288 *   Set the registers for the size we have specified. Don't bother
 289 *   trying to understand this without the ZR36057 manual in front of
 290 *   you [AC].
 291 *
 292 *   PS: The manual is free for download in .pdf format from
 293 *   www.zoran.com - nicely done those folks.
 294 */
 295
 296static void
 297zr36057_adjust_vfe (struct zoran          *zr,
 298                    enum zoran_codec_mode  mode)
 299{
 300        u32 reg;
 301
 302        switch (mode) {
 303        case BUZ_MODE_MOTION_DECOMPRESS:
 304                btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 305                reg = btread(ZR36057_VFEHCR);
 306                if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 307                        reg += ((1 << 10) | 1);
 308                }
 309                btwrite(reg, ZR36057_VFEHCR);
 310                break;
 311        case BUZ_MODE_MOTION_COMPRESS:
 312        case BUZ_MODE_IDLE:
 313        default:
 314                if ((zr->norm & V4L2_STD_NTSC) ||
 315                    (zr->card.type == LML33R10 &&
 316                     (zr->norm & V4L2_STD_PAL)))
 317                        btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 318                else
 319                        btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 320                reg = btread(ZR36057_VFEHCR);
 321                if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 322                        reg -= ((1 << 10) | 1);
 323                }
 324                btwrite(reg, ZR36057_VFEHCR);
 325                break;
 326        }
 327}
 328
 329/*
 330 * set geometry
 331 */
 332
 333static void
 334zr36057_set_vfe (struct zoran              *zr,
 335                 int                        video_width,
 336                 int                        video_height,
 337                 const struct zoran_format *format)
 338{
 339        struct tvnorm *tvn;
 340        unsigned HStart, HEnd, VStart, VEnd;
 341        unsigned DispMode;
 342        unsigned VidWinWid, VidWinHt;
 343        unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 344        unsigned Wa, We, Ha, He;
 345        unsigned X, Y, HorDcm, VerDcm;
 346        u32 reg;
 347        unsigned mask_line_size;
 348
 349        tvn = zr->timing;
 350
 351        Wa = tvn->Wa;
 352        Ha = tvn->Ha;
 353
 354        dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 355                ZR_DEVNAME(zr), video_width, video_height);
 356
 357        if (video_width < BUZ_MIN_WIDTH ||
 358            video_height < BUZ_MIN_HEIGHT ||
 359            video_width > Wa || video_height > Ha) {
 360                dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 361                        ZR_DEVNAME(zr), video_width, video_height);
 362                return;
 363        }
 364
 365        /**** zr36057 ****/
 366
 367        /* horizontal */
 368        VidWinWid = video_width;
 369        X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
 370        We = (VidWinWid * 64) / X;
 371        HorDcm = 64 - X;
 372        hcrop1 = 2 * ((tvn->Wa - We) / 4);
 373        hcrop2 = tvn->Wa - We - hcrop1;
 374        HStart = tvn->HStart ? tvn->HStart : 1;
 375        /* (Ronald) Original comment:
 376         * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 377         * this is false. It inverses chroma values on the LML33R10 (so Cr
 378         * suddenly is shown as Cb and reverse, really cool effect if you
 379         * want to see blue faces, not useful otherwise). So don't use |1.
 380         * However, the DC10 has '0' as HStart, but does need |1, so we
 381         * use a dirty check...
 382         */
 383        HEnd = HStart + tvn->Wa - 1;
 384        HStart += hcrop1;
 385        HEnd -= hcrop2;
 386        reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 387            | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 388        if (zr->card.vfe_pol.hsync_pol)
 389                reg |= ZR36057_VFEHCR_HSPol;
 390        btwrite(reg, ZR36057_VFEHCR);
 391
 392        /* Vertical */
 393        DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 394        VidWinHt = DispMode ? video_height : video_height / 2;
 395        Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
 396        He = (VidWinHt * 64) / Y;
 397        VerDcm = 64 - Y;
 398        vcrop1 = (tvn->Ha / 2 - He) / 2;
 399        vcrop2 = tvn->Ha / 2 - He - vcrop1;
 400        VStart = tvn->VStart;
 401        VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 402        VStart += vcrop1;
 403        VEnd -= vcrop2;
 404        reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 405            | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 406        if (zr->card.vfe_pol.vsync_pol)
 407                reg |= ZR36057_VFEVCR_VSPol;
 408        btwrite(reg, ZR36057_VFEVCR);
 409
 410        /* scaler and pixel format */
 411        reg = 0;
 412        reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 413        reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 414        reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 415        /* RJ: I don't know, why the following has to be the opposite
 416         * of the corresponding ZR36060 setting, but only this way
 417         * we get the correct colors when uncompressing to the screen  */
 418        //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 419        /* RJ: Don't know if that is needed for NTSC also */
 420        if (!(zr->norm & V4L2_STD_NTSC))
 421                reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 422        reg |= ZR36057_VFESPFR_TopField;
 423        if (HorDcm >= 48) {
 424                reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 425        } else if (HorDcm >= 32) {
 426                reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 427        } else if (HorDcm >= 16) {
 428                reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 429        }
 430        reg |= format->vfespfr;
 431        btwrite(reg, ZR36057_VFESPFR);
 432
 433        /* display configuration */
 434        reg = (16 << ZR36057_VDCR_MinPix)
 435            | (VidWinHt << ZR36057_VDCR_VidWinHt)
 436            | (VidWinWid << ZR36057_VDCR_VidWinWid);
 437        if (pci_pci_problems & PCIPCI_TRITON)
 438                // || zr->revision < 1) // Revision 1 has also Triton support
 439                reg &= ~ZR36057_VDCR_Triton;
 440        else
 441                reg |= ZR36057_VDCR_Triton;
 442        btwrite(reg, ZR36057_VDCR);
 443
 444        /* (Ronald) don't write this if overlay_mask = NULL */
 445        if (zr->overlay_mask) {
 446                /* Write overlay clipping mask data, but don't enable overlay clipping */
 447                /* RJ: since this makes only sense on the screen, we use
 448                 * zr->overlay_settings.width instead of video_width */
 449
 450                mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 451                reg = virt_to_bus(zr->overlay_mask);
 452                btwrite(reg, ZR36057_MMTR);
 453                reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 454                btwrite(reg, ZR36057_MMBR);
 455                reg =
 456                    mask_line_size - (zr->overlay_settings.width +
 457                                      31) / 32;
 458                if (DispMode == 0)
 459                        reg += mask_line_size;
 460                reg <<= ZR36057_OCR_MaskStride;
 461                btwrite(reg, ZR36057_OCR);
 462        }
 463
 464        zr36057_adjust_vfe(zr, zr->codec_mode);
 465}
 466
 467/*
 468 * Switch overlay on or off
 469 */
 470
 471void
 472zr36057_overlay (struct zoran *zr,
 473                 int           on)
 474{
 475        u32 reg;
 476
 477        if (on) {
 478                /* do the necessary settings ... */
 479                btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 480
 481                zr36057_set_vfe(zr,
 482                                zr->overlay_settings.width,
 483                                zr->overlay_settings.height,
 484                                zr->overlay_settings.format);
 485
 486                /* Start and length of each line MUST be 4-byte aligned.
 487                 * This should be allready checked before the call to this routine.
 488                 * All error messages are internal driver checking only! */
 489
 490                /* video display top and bottom registers */
 491                reg = (long) zr->vbuf_base +
 492                    zr->overlay_settings.x *
 493                    ((zr->overlay_settings.format->depth + 7) / 8) +
 494                    zr->overlay_settings.y *
 495                    zr->vbuf_bytesperline;
 496                btwrite(reg, ZR36057_VDTR);
 497                if (reg & 3)
 498                        dprintk(1,
 499                                KERN_ERR
 500                                "%s: zr36057_overlay() - video_address not aligned\n",
 501                                ZR_DEVNAME(zr));
 502                if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 503                        reg += zr->vbuf_bytesperline;
 504                btwrite(reg, ZR36057_VDBR);
 505
 506                /* video stride, status, and frame grab register */
 507                reg = zr->vbuf_bytesperline -
 508                    zr->overlay_settings.width *
 509                    ((zr->overlay_settings.format->depth + 7) / 8);
 510                if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 511                        reg += zr->vbuf_bytesperline;
 512                if (reg & 3)
 513                        dprintk(1,
 514                                KERN_ERR
 515                                "%s: zr36057_overlay() - video_stride not aligned\n",
 516                                ZR_DEVNAME(zr));
 517                reg = (reg << ZR36057_VSSFGR_DispStride);
 518                reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 519                btwrite(reg, ZR36057_VSSFGR);
 520
 521                /* Set overlay clipping */
 522                if (zr->overlay_settings.clipcount > 0)
 523                        btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 524
 525                /* ... and switch it on */
 526                btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 527        } else {
 528                /* Switch it off */
 529                btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 530        }
 531}
 532
 533/*
 534 * The overlay mask has one bit for each pixel on a scan line,
 535 *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 536 */
 537
 538void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
 539{
 540        struct zoran *zr = fh->zr;
 541        unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 542        u32 *mask;
 543        int x, y, width, height;
 544        unsigned i, j, k;
 545        u32 reg;
 546
 547        /* fill mask with one bits */
 548        memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 549        reg = 0;
 550
 551        for (i = 0; i < count; ++i) {
 552                /* pick up local copy of clip */
 553                x = vp[i].c.left;
 554                y = vp[i].c.top;
 555                width = vp[i].c.width;
 556                height = vp[i].c.height;
 557
 558                /* trim clips that extend beyond the window */
 559                if (x < 0) {
 560                        width += x;
 561                        x = 0;
 562                }
 563                if (y < 0) {
 564                        height += y;
 565                        y = 0;
 566                }
 567                if (x + width > fh->overlay_settings.width) {
 568                        width = fh->overlay_settings.width - x;
 569                }
 570                if (y + height > fh->overlay_settings.height) {
 571                        height = fh->overlay_settings.height - y;
 572                }
 573
 574                /* ignore degenerate clips */
 575                if (height <= 0) {
 576                        continue;
 577                }
 578                if (width <= 0) {
 579                        continue;
 580                }
 581
 582                /* apply clip for each scan line */
 583                for (j = 0; j < height; ++j) {
 584                        /* reset bit for each pixel */
 585                        /* this can be optimized later if need be */
 586                        mask = fh->overlay_mask + (y + j) * mask_line_size;
 587                        for (k = 0; k < width; ++k) {
 588                                mask[(x + k) / 32] &=
 589                                    ~((u32) 1 << (x + k) % 32);
 590                        }
 591                }
 592        }
 593}
 594
 595/* Enable/Disable uncompressed memory grabbing of the 36057 */
 596
 597void
 598zr36057_set_memgrab (struct zoran *zr,
 599                     int           mode)
 600{
 601        if (mode) {
 602                /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 603                 * means a capture is already in progress, but FrameGrab==1
 604                 * doesn't necessary mean that.  It's more correct to say a 1
 605                 * to 0 transition indicates a capture completed.  If a
 606                 * capture is pending when capturing is tuned off, FrameGrab
 607                 * will be stuck at 1 until capturing is turned back on.
 608                 */
 609                if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 610                        dprintk(1,
 611                                KERN_WARNING
 612                                "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 613                                ZR_DEVNAME(zr));
 614
 615                /* switch on VSync interrupts */
 616                btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 617                btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 618
 619                /* enable SnapShot */
 620                btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 621
 622                /* Set zr36057 video front end  and enable video */
 623                zr36057_set_vfe(zr, zr->v4l_settings.width,
 624                                zr->v4l_settings.height,
 625                                zr->v4l_settings.format);
 626
 627                zr->v4l_memgrab_active = 1;
 628        } else {
 629                /* switch off VSync interrupts */
 630                btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 631
 632                zr->v4l_memgrab_active = 0;
 633                zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 634
 635                /* reenable grabbing to screen if it was running */
 636                if (zr->v4l_overlay_active) {
 637                        zr36057_overlay(zr, 1);
 638                } else {
 639                        btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 640                        btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 641                }
 642        }
 643}
 644
 645int
 646wait_grab_pending (struct zoran *zr)
 647{
 648        unsigned long flags;
 649
 650        /* wait until all pending grabs are finished */
 651
 652        if (!zr->v4l_memgrab_active)
 653                return 0;
 654
 655        wait_event_interruptible(zr->v4l_capq,
 656                        (zr->v4l_pend_tail == zr->v4l_pend_head));
 657        if (signal_pending(current))
 658                return -ERESTARTSYS;
 659
 660        spin_lock_irqsave(&zr->spinlock, flags);
 661        zr36057_set_memgrab(zr, 0);
 662        spin_unlock_irqrestore(&zr->spinlock, flags);
 663
 664        return 0;
 665}
 666
 667/*****************************************************************************
 668 *                                                                           *
 669 *  Set up the Buz-specific MJPEG part                                       *
 670 *                                                                           *
 671 *****************************************************************************/
 672
 673static inline void
 674set_frame (struct zoran *zr,
 675           int           val)
 676{
 677        GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 678}
 679
 680static void
 681set_videobus_dir (struct zoran *zr,
 682                  int           val)
 683{
 684        switch (zr->card.type) {
 685        case LML33:
 686        case LML33R10:
 687                if (lml33dpath == 0)
 688                        GPIO(zr, 5, val);
 689                else
 690                        GPIO(zr, 5, 1);
 691                break;
 692        default:
 693                GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
 694                     zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
 695                break;
 696        }
 697}
 698
 699static void
 700init_jpeg_queue (struct zoran *zr)
 701{
 702        int i;
 703
 704        /* re-initialize DMA ring stuff */
 705        zr->jpg_que_head = 0;
 706        zr->jpg_dma_head = 0;
 707        zr->jpg_dma_tail = 0;
 708        zr->jpg_que_tail = 0;
 709        zr->jpg_seq_num = 0;
 710        zr->JPEG_error = 0;
 711        zr->num_errors = 0;
 712        zr->jpg_err_seq = 0;
 713        zr->jpg_err_shift = 0;
 714        zr->jpg_queued_num = 0;
 715        for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 716                zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 717        }
 718        for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 719                zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 720        }
 721}
 722
 723static void
 724zr36057_set_jpg (struct zoran          *zr,
 725                 enum zoran_codec_mode  mode)
 726{
 727        struct tvnorm *tvn;
 728        u32 reg;
 729
 730        tvn = zr->timing;
 731
 732        /* assert P_Reset, disable code transfer, deassert Active */
 733        btwrite(0, ZR36057_JPC);
 734
 735        /* MJPEG compression mode */
 736        switch (mode) {
 737
 738        case BUZ_MODE_MOTION_COMPRESS:
 739        default:
 740                reg = ZR36057_JMC_MJPGCmpMode;
 741                break;
 742
 743        case BUZ_MODE_MOTION_DECOMPRESS:
 744                reg = ZR36057_JMC_MJPGExpMode;
 745                reg |= ZR36057_JMC_SyncMstr;
 746                /* RJ: The following is experimental - improves the output to screen */
 747                //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 748                break;
 749
 750        case BUZ_MODE_STILL_COMPRESS:
 751                reg = ZR36057_JMC_JPGCmpMode;
 752                break;
 753
 754        case BUZ_MODE_STILL_DECOMPRESS:
 755                reg = ZR36057_JMC_JPGExpMode;
 756                break;
 757
 758        }
 759        reg |= ZR36057_JMC_JPG;
 760        if (zr->jpg_settings.field_per_buff == 1)
 761                reg |= ZR36057_JMC_Fld_per_buff;
 762        btwrite(reg, ZR36057_JMC);
 763
 764        /* vertical */
 765        btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 766        reg = (6 << ZR36057_VSP_VsyncSize) |
 767              (tvn->Ht << ZR36057_VSP_FrmTot);
 768        btwrite(reg, ZR36057_VSP);
 769        reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 770              (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 771        btwrite(reg, ZR36057_FVAP);
 772
 773        /* horizontal */
 774        if (zr->card.vfe_pol.hsync_pol)
 775                btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 776        else
 777                btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 778        reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 779              (tvn->Wt << ZR36057_HSP_LineTot);
 780        btwrite(reg, ZR36057_HSP);
 781        reg = ((zr->jpg_settings.img_x +
 782                tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 783              (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 784        btwrite(reg, ZR36057_FHAP);
 785
 786        /* field process parameters */
 787        if (zr->jpg_settings.odd_even)
 788                reg = ZR36057_FPP_Odd_Even;
 789        else
 790                reg = 0;
 791
 792        btwrite(reg, ZR36057_FPP);
 793
 794        /* Set proper VCLK Polarity, else colors will be wrong during playback */
 795        //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 796
 797        /* code base address */
 798        reg = virt_to_bus(zr->stat_com);
 799        btwrite(reg, ZR36057_JCBA);
 800
 801        /* FIFO threshold (FIFO is 160. double words) */
 802        /* NOTE: decimal values here */
 803        switch (mode) {
 804
 805        case BUZ_MODE_STILL_COMPRESS:
 806        case BUZ_MODE_MOTION_COMPRESS:
 807                if (zr->card.type != BUZ)
 808                        reg = 140;
 809                else
 810                        reg = 60;
 811                break;
 812
 813        case BUZ_MODE_STILL_DECOMPRESS:
 814        case BUZ_MODE_MOTION_DECOMPRESS:
 815                reg = 20;
 816                break;
 817
 818        default:
 819                reg = 80;
 820                break;
 821
 822        }
 823        btwrite(reg, ZR36057_JCFT);
 824        zr36057_adjust_vfe(zr, mode);
 825
 826}
 827
 828void
 829print_interrupts (struct zoran *zr)
 830{
 831        int res, noerr = 0;
 832
 833        printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 834        if ((res = zr->field_counter) < -1 || res > 1) {
 835                printk(" FD:%d", res);
 836        }
 837        if ((res = zr->intr_counter_GIRQ1) != 0) {
 838                printk(" GIRQ1:%d", res);
 839                noerr++;
 840        }
 841        if ((res = zr->intr_counter_GIRQ0) != 0) {
 842                printk(" GIRQ0:%d", res);
 843                noerr++;
 844        }
 845        if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 846                printk(" CodRepIRQ:%d", res);
 847                noerr++;
 848        }
 849        if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 850                printk(" JPEGRepIRQ:%d", res);
 851                noerr++;
 852        }
 853        if (zr->JPEG_max_missed) {
 854                printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 855                       zr->JPEG_min_missed);
 856        }
 857        if (zr->END_event_missed) {
 858                printk(" ENDs missed: %d", zr->END_event_missed);
 859        }
 860        //if (zr->jpg_queued_num) {
 861        printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 862               zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 863        //}
 864        if (!noerr) {
 865                printk(": no interrupts detected.");
 866        }
 867        printk("\n");
 868}
 869
 870void
 871clear_interrupt_counters (struct zoran *zr)
 872{
 873        zr->intr_counter_GIRQ1 = 0;
 874        zr->intr_counter_GIRQ0 = 0;
 875        zr->intr_counter_CodRepIRQ = 0;
 876        zr->intr_counter_JPEGRepIRQ = 0;
 877        zr->field_counter = 0;
 878        zr->IRQ1_in = 0;
 879        zr->IRQ1_out = 0;
 880        zr->JPEG_in = 0;
 881        zr->JPEG_out = 0;
 882        zr->JPEG_0 = 0;
 883        zr->JPEG_1 = 0;
 884        zr->END_event_missed = 0;
 885        zr->JPEG_missed = 0;
 886        zr->JPEG_max_missed = 0;
 887        zr->JPEG_min_missed = 0x7fffffff;
 888}
 889
 890static u32
 891count_reset_interrupt (struct zoran *zr)
 892{
 893        u32 isr;
 894
 895        if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 896                if (isr & ZR36057_ISR_GIRQ1) {
 897                        btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 898                        zr->intr_counter_GIRQ1++;
 899                }
 900                if (isr & ZR36057_ISR_GIRQ0) {
 901                        btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 902                        zr->intr_counter_GIRQ0++;
 903                }
 904                if (isr & ZR36057_ISR_CodRepIRQ) {
 905                        btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 906                        zr->intr_counter_CodRepIRQ++;
 907                }
 908                if (isr & ZR36057_ISR_JPEGRepIRQ) {
 909                        btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 910                        zr->intr_counter_JPEGRepIRQ++;
 911                }
 912        }
 913        return isr;
 914}
 915
 916void
 917jpeg_start (struct zoran *zr)
 918{
 919        int reg;
 920
 921        zr->frame_num = 0;
 922
 923        /* deassert P_reset, disable code transfer, deassert Active */
 924        btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 925        /* stop flushing the internal code buffer */
 926        btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 927        /* enable code transfer */
 928        btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 929
 930        /* clear IRQs */
 931        btwrite(IRQ_MASK, ZR36057_ISR);
 932        /* enable the JPEG IRQs */
 933        btwrite(zr->card.jpeg_int |
 934                        ZR36057_ICR_JPEGRepIRQ |
 935                        ZR36057_ICR_IntPinEn,
 936                ZR36057_ICR);
 937
 938        set_frame(zr, 0);       // \FRAME
 939
 940        /* set the JPEG codec guest ID */
 941        reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 942               (0 << ZR36057_JCGI_JPEGuestReg);
 943        btwrite(reg, ZR36057_JCGI);
 944
 945        if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 946            zr->card.video_codec == CODEC_TYPE_ZR36050) {
 947                /* Enable processing on the ZR36016 */
 948                if (zr->vfe)
 949                        zr36016_write(zr->vfe, 0, 1);
 950
 951                /* load the address of the GO register in the ZR36050 latch */
 952                post_office_write(zr, 0, 0, 0);
 953        }
 954
 955        /* assert Active */
 956        btor(ZR36057_JPC_Active, ZR36057_JPC);
 957
 958        /* enable the Go generation */
 959        btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 960        udelay(30);
 961
 962        set_frame(zr, 1);       // /FRAME
 963
 964        dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 965}
 966
 967void
 968zr36057_enable_jpg (struct zoran          *zr,
 969                    enum zoran_codec_mode  mode)
 970{
 971        struct vfe_settings cap;
 972        int field_size =
 973            zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 974
 975        zr->codec_mode = mode;
 976
 977        cap.x = zr->jpg_settings.img_x;
 978        cap.y = zr->jpg_settings.img_y;
 979        cap.width = zr->jpg_settings.img_width;
 980        cap.height = zr->jpg_settings.img_height;
 981        cap.decimation =
 982            zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
 983        cap.quality = zr->jpg_settings.jpg_comp.quality;
 984
 985        switch (mode) {
 986
 987        case BUZ_MODE_MOTION_COMPRESS: {
 988                struct jpeg_app_marker app;
 989                struct jpeg_com_marker com;
 990
 991                /* In motion compress mode, the decoder output must be enabled, and
 992                 * the video bus direction set to input.
 993                 */
 994                set_videobus_dir(zr, 0);
 995                decoder_call(zr, video, s_stream, 1);
 996                encoder_call(zr, video, s_routing, 0, 0, 0);
 997
 998                /* Take the JPEG codec and the VFE out of sleep */
 999                jpeg_codec_sleep(zr, 0);
1000
1001                /* set JPEG app/com marker */
1002                app.appn = zr->jpg_settings.jpg_comp.APPn;
1003                app.len = zr->jpg_settings.jpg_comp.APP_len;
1004                memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1005                zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1006                                   sizeof(struct jpeg_app_marker), &app);
1007
1008                com.len = zr->jpg_settings.jpg_comp.COM_len;
1009                memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1010                zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1011                                   sizeof(struct jpeg_com_marker), &com);
1012
1013                /* Setup the JPEG codec */
1014                zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1015                                   sizeof(int), &field_size);
1016                zr->codec->set_video(zr->codec, zr->timing, &cap,
1017                                     &zr->card.vfe_pol);
1018                zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1019
1020                /* Setup the VFE */
1021                if (zr->vfe) {
1022                        zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1023                                         sizeof(int), &field_size);
1024                        zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1025                                           &zr->card.vfe_pol);
1026                        zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1027                }
1028
1029                init_jpeg_queue(zr);
1030                zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1031
1032                clear_interrupt_counters(zr);
1033                dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1034                        ZR_DEVNAME(zr));
1035                break;
1036        }
1037
1038        case BUZ_MODE_MOTION_DECOMPRESS:
1039                /* In motion decompression mode, the decoder output must be disabled, and
1040                 * the video bus direction set to output.
1041                 */
1042                decoder_call(zr, video, s_stream, 0);
1043                set_videobus_dir(zr, 1);
1044                encoder_call(zr, video, s_routing, 1, 0, 0);
1045
1046                /* Take the JPEG codec and the VFE out of sleep */
1047                jpeg_codec_sleep(zr, 0);
1048                /* Setup the VFE */
1049                if (zr->vfe) {
1050                        zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1051                                           &zr->card.vfe_pol);
1052                        zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1053                }
1054                /* Setup the JPEG codec */
1055                zr->codec->set_video(zr->codec, zr->timing, &cap,
1056                                     &zr->card.vfe_pol);
1057                zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1058
1059                init_jpeg_queue(zr);
1060                zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1061
1062                clear_interrupt_counters(zr);
1063                dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1064                        ZR_DEVNAME(zr));
1065                break;
1066
1067        case BUZ_MODE_IDLE:
1068        default:
1069                /* shut down processing */
1070                btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1071                      ZR36057_ICR);
1072                btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1073                        ZR36057_ISR);
1074                btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1075
1076                msleep(50);
1077
1078                set_videobus_dir(zr, 0);
1079                set_frame(zr, 1);       // /FRAME
1080                btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1081                btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1082                btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1083                btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1084                jpeg_codec_reset(zr);
1085                jpeg_codec_sleep(zr, 1);
1086                zr36057_adjust_vfe(zr, mode);
1087
1088                decoder_call(zr, video, s_stream, 1);
1089                encoder_call(zr, video, s_routing, 0, 0, 0);
1090
1091                dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1092                break;
1093
1094        }
1095}
1096
1097/* when this is called the spinlock must be held */
1098void
1099zoran_feed_stat_com (struct zoran *zr)
1100{
1101        /* move frames from pending queue to DMA */
1102
1103        int frame, i, max_stat_com;
1104
1105        max_stat_com =
1106            (zr->jpg_settings.TmpDcm ==
1107             1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1108
1109        while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1110               zr->jpg_dma_head < zr->jpg_que_head) {
1111
1112                frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1113                if (zr->jpg_settings.TmpDcm == 1) {
1114                        /* fill 1 stat_com entry */
1115                        i = (zr->jpg_dma_head -
1116                             zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1117                        if (!(zr->stat_com[i] & cpu_to_le32(1)))
1118                                break;
1119                        zr->stat_com[i] =
1120                            cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1121                } else {
1122                        /* fill 2 stat_com entries */
1123                        i = ((zr->jpg_dma_head -
1124                              zr->jpg_err_shift) & 1) * 2;
1125                        if (!(zr->stat_com[i] & cpu_to_le32(1)))
1126                                break;
1127                        zr->stat_com[i] =
1128                            cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1129                        zr->stat_com[i + 1] =
1130                            cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1131                }
1132                zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1133                zr->jpg_dma_head++;
1134
1135        }
1136        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1137                zr->jpg_queued_num++;
1138}
1139
1140/* when this is called the spinlock must be held */
1141static void
1142zoran_reap_stat_com (struct zoran *zr)
1143{
1144        /* move frames from DMA queue to done queue */
1145
1146        int i;
1147        u32 stat_com;
1148        unsigned int seq;
1149        unsigned int dif;
1150        struct zoran_buffer *buffer;
1151        int frame;
1152
1153        /* In motion decompress we don't have a hardware frame counter,
1154         * we just count the interrupts here */
1155
1156        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1157                zr->jpg_seq_num++;
1158        }
1159        while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1160                if (zr->jpg_settings.TmpDcm == 1)
1161                        i = (zr->jpg_dma_tail -
1162                             zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1163                else
1164                        i = ((zr->jpg_dma_tail -
1165                              zr->jpg_err_shift) & 1) * 2 + 1;
1166
1167                stat_com = le32_to_cpu(zr->stat_com[i]);
1168
1169                if ((stat_com & 1) == 0) {
1170                        return;
1171                }
1172                frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1173                buffer = &zr->jpg_buffers.buffer[frame];
1174                do_gettimeofday(&buffer->bs.timestamp);
1175
1176                if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1177                        buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1178
1179                        /* update sequence number with the help of the counter in stat_com */
1180
1181                        seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1182                        dif = (seq - zr->jpg_seq_num) & 0xff;
1183                        zr->jpg_seq_num += dif;
1184                } else {
1185                        buffer->bs.length = 0;
1186                }
1187                buffer->bs.seq =
1188                    zr->jpg_settings.TmpDcm ==
1189                    2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1190                buffer->state = BUZ_STATE_DONE;
1191
1192                zr->jpg_dma_tail++;
1193        }
1194}
1195
1196static void zoran_restart(struct zoran *zr)
1197{
1198        /* Now the stat_comm buffer is ready for restart */
1199        unsigned int status = 0;
1200        int mode;
1201
1202        if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1203                decoder_call(zr, video, g_input_status, &status);
1204                mode = CODEC_DO_COMPRESSION;
1205        } else {
1206                status = V4L2_IN_ST_NO_SIGNAL;
1207                mode = CODEC_DO_EXPANSION;
1208        }
1209        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1210            !(status & V4L2_IN_ST_NO_SIGNAL)) {
1211                /********** RESTART code *************/
1212                jpeg_codec_reset(zr);
1213                zr->codec->set_mode(zr->codec, mode);
1214                zr36057_set_jpg(zr, zr->codec_mode);
1215                jpeg_start(zr);
1216
1217                if (zr->num_errors <= 8)
1218                        dprintk(2, KERN_INFO "%s: Restart\n",
1219                                ZR_DEVNAME(zr));
1220
1221                zr->JPEG_missed = 0;
1222                zr->JPEG_error = 2;
1223                /********** End RESTART code ***********/
1224        }
1225}
1226
1227static void
1228error_handler (struct zoran *zr,
1229               u32           astat,
1230               u32           stat)
1231{
1232        int i;
1233
1234        /* This is JPEG error handling part */
1235        if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1236            zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1237                return;
1238        }
1239
1240        if ((stat & 1) == 0 &&
1241            zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1242            zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1243                /* No free buffers... */
1244                zoran_reap_stat_com(zr);
1245                zoran_feed_stat_com(zr);
1246                wake_up_interruptible(&zr->jpg_capq);
1247                zr->JPEG_missed = 0;
1248                return;
1249        }
1250
1251        if (zr->JPEG_error == 1) {
1252                zoran_restart(zr);
1253                return;
1254        }
1255
1256        /*
1257         * First entry: error just happened during normal operation
1258         *
1259         * In BUZ_MODE_MOTION_COMPRESS:
1260         *
1261         * Possible glitch in TV signal. In this case we should
1262         * stop the codec and wait for good quality signal before
1263         * restarting it to avoid further problems
1264         *
1265         * In BUZ_MODE_MOTION_DECOMPRESS:
1266         *
1267         * Bad JPEG frame: we have to mark it as processed (codec crashed
1268         * and was not able to do it itself), and to remove it from queue.
1269         */
1270        btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1271        udelay(1);
1272        stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1273        btwrite(0, ZR36057_JPC);
1274        btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1275        jpeg_codec_reset(zr);
1276        jpeg_codec_sleep(zr, 1);
1277        zr->JPEG_error = 1;
1278        zr->num_errors++;
1279
1280        /* Report error */
1281        if (zr36067_debug > 1 && zr->num_errors <= 8) {
1282                long frame;
1283                int j;
1284
1285                frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1286                printk(KERN_ERR
1287                       "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1288                       ZR_DEVNAME(zr), stat, zr->last_isr,
1289                       zr->jpg_que_tail, zr->jpg_dma_tail,
1290                       zr->jpg_dma_head, zr->jpg_que_head,
1291                       zr->jpg_seq_num, frame);
1292                printk(KERN_INFO "stat_com frames:");
1293                for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1294                        for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1295                                if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1296                                        printk(KERN_CONT "% d->%d", j, i);
1297                        }
1298                }
1299                printk(KERN_CONT "\n");
1300        }
1301        /* Find an entry in stat_com and rotate contents */
1302        if (zr->jpg_settings.TmpDcm == 1)
1303                i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1304        else
1305                i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1306        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1307                /* Mimic zr36067 operation */
1308                zr->stat_com[i] |= cpu_to_le32(1);
1309                if (zr->jpg_settings.TmpDcm != 1)
1310                        zr->stat_com[i + 1] |= cpu_to_le32(1);
1311                /* Refill */
1312                zoran_reap_stat_com(zr);
1313                zoran_feed_stat_com(zr);
1314                wake_up_interruptible(&zr->jpg_capq);
1315                /* Find an entry in stat_com again after refill */
1316                if (zr->jpg_settings.TmpDcm == 1)
1317                        i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1318                else
1319                        i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1320        }
1321        if (i) {
1322                /* Rotate stat_comm entries to make current entry first */
1323                int j;
1324                __le32 bus_addr[BUZ_NUM_STAT_COM];
1325
1326                /* Here we are copying the stat_com array, which
1327                 * is already in little endian format, so
1328                 * no endian conversions here
1329                 */
1330                memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1331
1332                for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1333                        zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
1334
1335                zr->jpg_err_shift += i;
1336                zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1337        }
1338        if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1339                zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1340        zoran_restart(zr);
1341}
1342
1343irqreturn_t
1344zoran_irq (int             irq,
1345           void           *dev_id)
1346{
1347        u32 stat, astat;
1348        int count;
1349        struct zoran *zr;
1350        unsigned long flags;
1351
1352        zr = dev_id;
1353        count = 0;
1354
1355        if (zr->testing) {
1356                /* Testing interrupts */
1357                spin_lock_irqsave(&zr->spinlock, flags);
1358                while ((stat = count_reset_interrupt(zr))) {
1359                        if (count++ > 100) {
1360                                btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1361                                dprintk(1,
1362                                        KERN_ERR
1363                                        "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1364                                        ZR_DEVNAME(zr), stat);
1365                                wake_up_interruptible(&zr->test_q);
1366                        }
1367                }
1368                zr->last_isr = stat;
1369                spin_unlock_irqrestore(&zr->spinlock, flags);
1370                return IRQ_HANDLED;
1371        }
1372
1373        spin_lock_irqsave(&zr->spinlock, flags);
1374        while (1) {
1375                /* get/clear interrupt status bits */
1376                stat = count_reset_interrupt(zr);
1377                astat = stat & IRQ_MASK;
1378                if (!astat) {
1379                        break;
1380                }
1381                dprintk(4,
1382                        KERN_DEBUG
1383                        "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1384                        astat, btread(ZR36057_ICR));
1385                if (astat & zr->card.vsync_int) {       // SW
1386
1387                        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1388                            zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1389                                /* count missed interrupts */
1390                                zr->JPEG_missed++;
1391                        }
1392                        //post_office_read(zr,1,0);
1393                        /* Interrupts may still happen when
1394                         * zr->v4l_memgrab_active is switched off.
1395                         * We simply ignore them */
1396
1397                        if (zr->v4l_memgrab_active) {
1398                                /* A lot more checks should be here ... */
1399                                if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1400                                        dprintk(1,
1401                                                KERN_WARNING
1402                                                "%s: BuzIRQ with SnapShot off ???\n",
1403                                                ZR_DEVNAME(zr));
1404
1405                                if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1406                                        /* There is a grab on a frame going on, check if it has finished */
1407                                        if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1408                                                /* it is finished, notify the user */
1409
1410                                                zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1411                                                zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1412                                                do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1413                                                zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1414                                                zr->v4l_pend_tail++;
1415                                        }
1416                                }
1417
1418                                if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1419                                        wake_up_interruptible(&zr->v4l_capq);
1420
1421                                /* Check if there is another grab queued */
1422
1423                                if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1424                                    zr->v4l_pend_tail != zr->v4l_pend_head) {
1425                                        int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1426                                        u32 reg;
1427
1428                                        zr->v4l_grab_frame = frame;
1429
1430                                        /* Set zr36057 video front end and enable video */
1431
1432                                        /* Buffer address */
1433
1434                                        reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1435                                        btwrite(reg, ZR36057_VDTR);
1436                                        if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1437                                                reg += zr->v4l_settings.bytesperline;
1438                                        btwrite(reg, ZR36057_VDBR);
1439
1440                                        /* video stride, status, and frame grab register */
1441                                        reg = 0;
1442                                        if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1443                                                reg += zr->v4l_settings.bytesperline;
1444                                        reg = (reg << ZR36057_VSSFGR_DispStride);
1445                                        reg |= ZR36057_VSSFGR_VidOvf;
1446                                        reg |= ZR36057_VSSFGR_SnapShot;
1447                                        reg |= ZR36057_VSSFGR_FrameGrab;
1448                                        btwrite(reg, ZR36057_VSSFGR);
1449
1450                                        btor(ZR36057_VDCR_VidEn,
1451                                             ZR36057_VDCR);
1452                                }
1453                        }
1454
1455                        /* even if we don't grab, we do want to increment
1456                         * the sequence counter to see lost frames */
1457                        zr->v4l_grab_seq++;
1458                }
1459#if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1460                if (astat & ZR36057_ISR_CodRepIRQ) {
1461                        zr->intr_counter_CodRepIRQ++;
1462                        IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1463                                ZR_DEVNAME(zr)));
1464                        btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1465                }
1466#endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1467
1468#if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1469                if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1470                    (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1471                     zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1472                        if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1473                                char sc[] = "0000";
1474                                char sv[5];
1475                                int i;
1476
1477                                printk(KERN_INFO
1478                                       "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1479                                       ZR_DEVNAME(zr), stat,
1480                                       zr->jpg_settings.odd_even,
1481                                       zr->jpg_settings.field_per_buff,
1482                                       zr->JPEG_missed);
1483
1484                                strcpy(sv, sc);
1485                                for (i = 0; i < 4; i++) {
1486                                        if (le32_to_cpu(zr->stat_com[i]) & 1)
1487                                                sv[i] = '1';
1488                                }
1489                                sv[4] = 0;
1490                                printk(KERN_INFO
1491                                       "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1492                                       ZR_DEVNAME(zr), sv,
1493                                       zr->jpg_que_tail,
1494                                       zr->jpg_dma_tail,
1495                                       zr->jpg_dma_head,
1496                                       zr->jpg_que_head);
1497                        } else {
1498                                /* Get statistics */
1499                                if (zr->JPEG_missed > zr->JPEG_max_missed)
1500                                        zr->JPEG_max_missed = zr->JPEG_missed;
1501                                if (zr->JPEG_missed < zr->JPEG_min_missed)
1502                                        zr->JPEG_min_missed = zr->JPEG_missed;
1503                        }
1504
1505                        if (zr36067_debug > 2 && zr->frame_num < 6) {
1506                                int i;
1507
1508                                printk(KERN_INFO "%s: seq=%ld stat_com:",
1509                                       ZR_DEVNAME(zr), zr->jpg_seq_num);
1510                                for (i = 0; i < 4; i++) {
1511                                        printk(KERN_CONT " %08x",
1512                                               le32_to_cpu(zr->stat_com[i]));
1513                                }
1514                                printk(KERN_CONT "\n");
1515                        }
1516                        zr->frame_num++;
1517                        zr->JPEG_missed = 0;
1518                        zr->JPEG_error = 0;
1519                        zoran_reap_stat_com(zr);
1520                        zoran_feed_stat_com(zr);
1521                        wake_up_interruptible(&zr->jpg_capq);
1522                }
1523#endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1524
1525                /* DATERR, too many fields missed, error processing */
1526                if ((astat & zr->card.jpeg_int) ||
1527                    zr->JPEG_missed > 25 ||
1528                    zr->JPEG_error == 1 ||
1529                    ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1530                     (zr->frame_num & (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1531                        error_handler(zr, astat, stat);
1532                }
1533
1534                count++;
1535                if (count > 10) {
1536                        dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1537                                ZR_DEVNAME(zr), count);
1538                        if (count > 20) {
1539                                btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1540                                dprintk(2,
1541                                        KERN_ERR
1542                                        "%s: IRQ lockup, cleared int mask\n",
1543                                        ZR_DEVNAME(zr));
1544                                break;
1545                        }
1546                }
1547                zr->last_isr = stat;
1548        }
1549        spin_unlock_irqrestore(&zr->spinlock, flags);
1550
1551        return IRQ_HANDLED;
1552}
1553
1554void
1555zoran_set_pci_master (struct zoran *zr,
1556                      int           set_master)
1557{
1558        if (set_master) {
1559                pci_set_master(zr->pci_dev);
1560        } else {
1561                u16 command;
1562
1563                pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1564                command &= ~PCI_COMMAND_MASTER;
1565                pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1566        }
1567}
1568
1569void
1570zoran_init_hardware (struct zoran *zr)
1571{
1572        /* Enable bus-mastering */
1573        zoran_set_pci_master(zr, 1);
1574
1575        /* Initialize the board */
1576        if (zr->card.init) {
1577                zr->card.init(zr);
1578        }
1579
1580        decoder_call(zr, core, init, 0);
1581        decoder_call(zr, core, s_std, zr->norm);
1582        decoder_call(zr, video, s_routing,
1583                zr->card.input[zr->input].muxsel, 0, 0);
1584
1585        encoder_call(zr, core, init, 0);
1586        encoder_call(zr, video, s_std_output, zr->norm);
1587        encoder_call(zr, video, s_routing, 0, 0, 0);
1588
1589        /* toggle JPEG codec sleep to sync PLL */
1590        jpeg_codec_sleep(zr, 1);
1591        jpeg_codec_sleep(zr, 0);
1592
1593        /* set individual interrupt enables (without GIRQ1)
1594         * but don't global enable until zoran_open() */
1595
1596        //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1597        // It looks like using only JPEGRepIRQEn is not always reliable,
1598        // may be when JPEG codec crashes it won't generate IRQ? So,
1599         /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1600            zr36057_init_vfe(zr);
1601
1602        zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1603
1604        btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1605}
1606
1607void
1608zr36057_restart (struct zoran *zr)
1609{
1610        btwrite(0, ZR36057_SPGPPCR);
1611        mdelay(1);
1612        btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1613        mdelay(1);
1614
1615        /* assert P_Reset */
1616        btwrite(0, ZR36057_JPC);
1617        /* set up GPIO direction - all output */
1618        btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1619
1620        /* set up GPIO pins and guest bus timing */
1621        btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1622}
1623
1624/*
1625 * initialize video front end
1626 */
1627
1628static void
1629zr36057_init_vfe (struct zoran *zr)
1630{
1631        u32 reg;
1632
1633        reg = btread(ZR36057_VFESPFR);
1634        reg |= ZR36057_VFESPFR_LittleEndian;
1635        reg &= ~ZR36057_VFESPFR_VCLKPol;
1636        reg |= ZR36057_VFESPFR_ExtFl;
1637        reg |= ZR36057_VFESPFR_TopField;
1638        btwrite(reg, ZR36057_VFESPFR);
1639        reg = btread(ZR36057_VDCR);
1640        if (pci_pci_problems & PCIPCI_TRITON)
1641                // || zr->revision < 1) // Revision 1 has also Triton support
1642                reg &= ~ZR36057_VDCR_Triton;
1643        else
1644                reg |= ZR36057_VDCR_Triton;
1645        btwrite(reg, ZR36057_VDCR);
1646}
1647