drivers/media/pci/zoran/zoran_device.c

   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
  26 #include <linux/types.h>
  27 #include <linux/kernel.h>
  28 #include <linux/module.h>
  29 #include <linux/vmalloc.h>
  30 #include <linux/ktime.h>
  31 #include <linux/sched/signal.h>
  32
  33 #include <linux/interrupt.h>
  34 #include <linux/proc_fs.h>
  35 #include <linux/i2c.h>
  36 #include <linux/i2c-algo-bit.h>
  37 #include <linux/videodev2.h>
  38 #include <media/v4l2-common.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/sem.h>
  41
  42 #include <linux/pci.h>
  43 #include <linux/delay.h>
  44 #include <linux/wait.h>
  45
  46 #include <asm/byteorder.h>
  47 #include <asm/io.h>
  48
  49 #include "videocodec.h"
  50 #include "zoran.h"
  51 #include "zoran_device.h"
  52 #include "zoran_card.h"
  53
  54 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
  55                    ZR36057_ISR_GIRQ1 | \
  56                    ZR36057_ISR_JPEGRepIRQ )
  57
  58 static bool lml33dpath;         /* default = 0
  59                                  * 1 will use digital path in capture
  60                                  * mode instead of analog. It can be
  61                                  * used for picture adjustments using
  62                                  * tool like xawtv while watching image
  63                                  * on TV monitor connected to the output.
  64                                  * However, due to absence of 75 Ohm
  65                                  * load on Bt819 input, there will be
  66                                  * some image imperfections */
  67
  68 module_param(lml33dpath, bool, 0644);
  69 MODULE_PARM_DESC(lml33dpath,
  70                  "Use digital path capture mode (on LML33 cards)");
  71
  72 static void
  73 zr36057_init_vfe (struct zoran *zr);
  74
  75 /*
  76  * General Purpose I/O and Guest bus access
  77  */
  78
  79 /*
  80  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  81  * GPIO bit number in the card_info structure is set to 0.
  82  */
  83
  84 void
  85 GPIO (struct zoran *zr,
  86       int           bit,
  87       unsigned int  value)
  88 {
  89         u32 reg;
  90         u32 mask;
  91
  92         /* Make sure the bit number is legal
  93          * A bit number of -1 (lacking) gives a mask of 0,
  94          * making it harmless */
  95         mask = (1 << (24 + bit)) & 0xff000000;
  96         reg = btread(ZR36057_GPPGCR1) & ~mask;
  97         if (value) {
  98                 reg |= mask;
  99         }
 100         btwrite(reg, ZR36057_GPPGCR1);
 101         udelay(1);
 102 }
 103
 104 /*
 105  * Wait til post office is no longer busy
 106  */
 107
 108 int
 109 post_office_wait (struct zoran *zr)
 110 {
 111         u32 por;
 112
 113 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 114         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 115                 /* wait for something to happen */
 116         }
 117         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 118                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 119                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 120                         por);
 121                 return -1;
 122         }
 123
 124         return 0;
 125 }
 126
 127 int
 128 post_office_write (struct zoran *zr,
 129                    unsigned int  guest,
 130                    unsigned int  reg,
 131                    unsigned int  value)
 132 {
 133         u32 por;
 134
 135         por =
 136             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 137             ((reg & 7) << 16) | (value & 0xFF);
 138         btwrite(por, ZR36057_POR);
 139
 140         return post_office_wait(zr);
 141 }
 142
 143 int
 144 post_office_read (struct zoran *zr,
 145                   unsigned int  guest,
 146                   unsigned int  reg)
 147 {
 148         u32 por;
 149
 150         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 151         btwrite(por, ZR36057_POR);
 152         if (post_office_wait(zr) < 0) {
 153                 return -1;
 154         }
 155
 156         return btread(ZR36057_POR) & 0xFF;
 157 }
 158
 159 /*
 160  * detect guests
 161  */
 162
 163 static void
 164 dump_guests (struct zoran *zr)
 165 {
 166         if (zr36067_debug > 2) {
 167                 int i, guest[8];
 168
 169                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 170                         guest[i] = post_office_read(zr, i, 0);
 171                 }
 172
 173                 printk(KERN_INFO "%s: Guests: %*ph\n",
 174                        ZR_DEVNAME(zr), 8, guest);
 175         }
 176 }
 177
 178 void
 179 detect_guest_activity (struct zoran *zr)
 180 {
 181         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 182         ktime_t t0, t1;
 183
 184         dump_guests(zr);
 185         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 186                ZR_DEVNAME(zr));
 187         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 188                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
 189         }
 190
 191         timeout = 0;
 192         j = 0;
 193         t0 = ktime_get();
 194         while (timeout < 10000) {
 195                 udelay(10);
 196                 timeout++;
 197                 for (i = 1; (i < 8) && (j < 8); i++) {
 198                         res = post_office_read(zr, i, 0);
 199                         if (res != guest[i]) {
 200                                 t1 = ktime_get();
 201                                 change[j][0] = ktime_to_us(ktime_sub(t1, t0));
 202                                 t0 = t1;
 203                                 change[j][1] = i;
 204                                 change[j][2] = res;
 205                                 j++;
 206                                 guest[i] = res;
 207                         }
 208                 }
 209                 if (j >= 8)
 210                         break;
 211         }
 212
 213         printk(KERN_INFO "%s: Guests: %*ph\n", ZR_DEVNAME(zr), 8, guest0);
 214
 215         if (j == 0) {
 216                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 217                 return;
 218         }
 219         for (i = 0; i < j; i++) {
 220                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 221                        change[i][0], change[i][1], change[i][2]);
 222         }
 223 }
 224
 225 /*
 226  * JPEG Codec access
 227  */
 228
 229 void
 230 jpeg_codec_sleep (struct zoran *zr,
 231                   int           sleep)
 232 {
 233         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
 234         if (!sleep) {
 235                 dprintk(3,
 236                         KERN_DEBUG
 237                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 238                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 239                 udelay(500);
 240         } else {
 241                 dprintk(3,
 242                         KERN_DEBUG
 243                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 244                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 245                 udelay(2);
 246         }
 247 }
 248
 249 int
 250 jpeg_codec_reset (struct zoran *zr)
 251 {
 252         /* Take the codec out of sleep */
 253         jpeg_codec_sleep(zr, 0);
 254
 255         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 256                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 257                                   0);
 258                 udelay(2);
 259         } else {
 260                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
 261                 udelay(2);
 262                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
 263                 udelay(2);
 264         }
 265
 266         return 0;
 267 }
 268
 269 /*
 270  *   Set the registers for the size we have specified. Don't bother
 271  *   trying to understand this without the ZR36057 manual in front of
 272  *   you [AC].
 273  *
 274  *   PS: The manual is free for download in .pdf format from
 275  *   www.zoran.com - nicely done those folks.
 276  */
 277
 278 static void
 279 zr36057_adjust_vfe (struct zoran          *zr,
 280                     enum zoran_codec_mode  mode)
 281 {
 282         u32 reg;
 283
 284         switch (mode) {
 285         case BUZ_MODE_MOTION_DECOMPRESS:
 286                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 287                 reg = btread(ZR36057_VFEHCR);
 288                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 289                         reg += ((1 << 10) | 1);
 290                 }
 291                 btwrite(reg, ZR36057_VFEHCR);
 292                 break;
 293         case BUZ_MODE_MOTION_COMPRESS:
 294         case BUZ_MODE_IDLE:
 295         default:
 296                 if ((zr->norm & V4L2_STD_NTSC) ||
 297                     (zr->card.type == LML33R10 &&
 298                      (zr->norm & V4L2_STD_PAL)))
 299                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 300                 else
 301                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 302                 reg = btread(ZR36057_VFEHCR);
 303                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 304                         reg -= ((1 << 10) | 1);
 305                 }
 306                 btwrite(reg, ZR36057_VFEHCR);
 307                 break;
 308         }
 309 }
 310
 311 /*
 312  * set geometry
 313  */
 314
 315 static void
 316 zr36057_set_vfe (struct zoran              *zr,
 317                  int                        video_width,
 318                  int                        video_height,
 319                  const struct zoran_format *format)
 320 {
 321         struct tvnorm *tvn;
 322         unsigned HStart, HEnd, VStart, VEnd;
 323         unsigned DispMode;
 324         unsigned VidWinWid, VidWinHt;
 325         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 326         unsigned Wa, We, Ha, He;
 327         unsigned X, Y, HorDcm, VerDcm;
 328         u32 reg;
 329         unsigned mask_line_size;
 330
 331         tvn = zr->timing;
 332
 333         Wa = tvn->Wa;
 334         Ha = tvn->Ha;
 335
 336         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 337                 ZR_DEVNAME(zr), video_width, video_height);
 338
 339         if (video_width < BUZ_MIN_WIDTH ||
 340             video_height < BUZ_MIN_HEIGHT ||
 341             video_width > Wa || video_height > Ha) {
 342                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 343                         ZR_DEVNAME(zr), video_width, video_height);
 344                 return;
 345         }
 346
 347         /**** zr36057 ****/
 348
 349         /* horizontal */
 350         VidWinWid = video_width;
 351         X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
 352         We = (VidWinWid * 64) / X;
 353         HorDcm = 64 - X;
 354         hcrop1 = 2 * ((tvn->Wa - We) / 4);
 355         hcrop2 = tvn->Wa - We - hcrop1;
 356         HStart = tvn->HStart ? tvn->HStart : 1;
 357         /* (Ronald) Original comment:
 358          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 359          * this is false. It inverses chroma values on the LML33R10 (so Cr
 360          * suddenly is shown as Cb and reverse, really cool effect if you
 361          * want to see blue faces, not useful otherwise). So don't use |1.
 362          * However, the DC10 has '0' as HStart, but does need |1, so we
 363          * use a dirty check...
 364          */
 365         HEnd = HStart + tvn->Wa - 1;
 366         HStart += hcrop1;
 367         HEnd -= hcrop2;
 368         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 369             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 370         if (zr->card.vfe_pol.hsync_pol)
 371                 reg |= ZR36057_VFEHCR_HSPol;
 372         btwrite(reg, ZR36057_VFEHCR);
 373
 374         /* Vertical */
 375         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 376         VidWinHt = DispMode ? video_height : video_height / 2;
 377         Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
 378         He = (VidWinHt * 64) / Y;
 379         VerDcm = 64 - Y;
 380         vcrop1 = (tvn->Ha / 2 - He) / 2;
 381         vcrop2 = tvn->Ha / 2 - He - vcrop1;
 382         VStart = tvn->VStart;
 383         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 384         VStart += vcrop1;
 385         VEnd -= vcrop2;
 386         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 387             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 388         if (zr->card.vfe_pol.vsync_pol)
 389                 reg |= ZR36057_VFEVCR_VSPol;
 390         btwrite(reg, ZR36057_VFEVCR);
 391
 392         /* scaler and pixel format */
 393         reg = 0;
 394         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 395         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 396         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 397         /* RJ: I don't know, why the following has to be the opposite
 398          * of the corresponding ZR36060 setting, but only this way
 399          * we get the correct colors when uncompressing to the screen  */
 400         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 401         /* RJ: Don't know if that is needed for NTSC also */
 402         if (!(zr->norm & V4L2_STD_NTSC))
 403                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 404         reg |= ZR36057_VFESPFR_TopField;
 405         if (HorDcm >= 48) {
 406                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 407         } else if (HorDcm >= 32) {
 408                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 409         } else if (HorDcm >= 16) {
 410                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 411         }
 412         reg |= format->vfespfr;
 413         btwrite(reg, ZR36057_VFESPFR);
 414
 415         /* display configuration */
 416         reg = (16 << ZR36057_VDCR_MinPix)
 417             | (VidWinHt << ZR36057_VDCR_VidWinHt)
 418             | (VidWinWid << ZR36057_VDCR_VidWinWid);
 419         if (pci_pci_problems & PCIPCI_TRITON)
 420                 // || zr->revision < 1) // Revision 1 has also Triton support
 421                 reg &= ~ZR36057_VDCR_Triton;
 422         else
 423                 reg |= ZR36057_VDCR_Triton;
 424         btwrite(reg, ZR36057_VDCR);
 425
 426         /* (Ronald) don't write this if overlay_mask = NULL */
 427         if (zr->overlay_mask) {
 428                 /* Write overlay clipping mask data, but don't enable overlay clipping */
 429                 /* RJ: since this makes only sense on the screen, we use
 430                  * zr->overlay_settings.width instead of video_width */
 431
 432                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 433                 reg = virt_to_bus(zr->overlay_mask);
 434                 btwrite(reg, ZR36057_MMTR);
 435                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 436                 btwrite(reg, ZR36057_MMBR);
 437                 reg =
 438                     mask_line_size - (zr->overlay_settings.width +
 439                                       31) / 32;
 440                 if (DispMode == 0)
 441                         reg += mask_line_size;
 442                 reg <<= ZR36057_OCR_MaskStride;
 443                 btwrite(reg, ZR36057_OCR);
 444         }
 445
 446         zr36057_adjust_vfe(zr, zr->codec_mode);
 447 }
 448
 449 /*
 450  * Switch overlay on or off
 451  */
 452
 453 void
 454 zr36057_overlay (struct zoran *zr,
 455                  int           on)
 456 {
 457         u32 reg;
 458
 459         if (on) {
 460                 /* do the necessary settings ... */
 461                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 462
 463                 zr36057_set_vfe(zr,
 464                                 zr->overlay_settings.width,
 465                                 zr->overlay_settings.height,
 466                                 zr->overlay_settings.format);
 467
 468                 /* Start and length of each line MUST be 4-byte aligned.
 469                  * This should be already checked before the call to this routine.
 470                  * All error messages are internal driver checking only! */
 471
 472                 /* video display top and bottom registers */
 473                 reg = (long) zr->vbuf_base +
 474                     zr->overlay_settings.x *
 475                     ((zr->overlay_settings.format->depth + 7) / 8) +
 476                     zr->overlay_settings.y *
 477                     zr->vbuf_bytesperline;
 478                 btwrite(reg, ZR36057_VDTR);
 479                 if (reg & 3)
 480                         dprintk(1,
 481                                 KERN_ERR
 482                                 "%s: zr36057_overlay() - video_address not aligned\n",
 483                                 ZR_DEVNAME(zr));
 484                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 485                         reg += zr->vbuf_bytesperline;
 486                 btwrite(reg, ZR36057_VDBR);
 487
 488                 /* video stride, status, and frame grab register */
 489                 reg = zr->vbuf_bytesperline -
 490                     zr->overlay_settings.width *
 491                     ((zr->overlay_settings.format->depth + 7) / 8);
 492                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 493                         reg += zr->vbuf_bytesperline;
 494                 if (reg & 3)
 495                         dprintk(1,
 496                                 KERN_ERR
 497                                 "%s: zr36057_overlay() - video_stride not aligned\n",
 498                                 ZR_DEVNAME(zr));
 499                 reg = (reg << ZR36057_VSSFGR_DispStride);
 500                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 501                 btwrite(reg, ZR36057_VSSFGR);
 502
 503                 /* Set overlay clipping */
 504                 if (zr->overlay_settings.clipcount > 0)
 505                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 506
 507                 /* ... and switch it on */
 508                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 509         } else {
 510                 /* Switch it off */
 511                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 512         }
 513 }
 514
 515 /*
 516  * The overlay mask has one bit for each pixel on a scan line,
 517  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 518  */
 519
 520 void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
 521 {
 522         struct zoran *zr = fh->zr;
 523         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 524         u32 *mask;
 525         int x, y, width, height;
 526         unsigned i, j, k;
 527
 528         /* fill mask with one bits */
 529         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 530
 531         for (i = 0; i < count; ++i) {
 532                 /* pick up local copy of clip */
 533                 x = vp[i].c.left;
 534                 y = vp[i].c.top;
 535                 width = vp[i].c.width;
 536                 height = vp[i].c.height;
 537
 538                 /* trim clips that extend beyond the window */
 539                 if (x < 0) {
 540                         width += x;
 541                         x = 0;
 542                 }
 543                 if (y < 0) {
 544                         height += y;
 545                         y = 0;
 546                 }
 547                 if (x + width > fh->overlay_settings.width) {
 548                         width = fh->overlay_settings.width - x;
 549                 }
 550                 if (y + height > fh->overlay_settings.height) {
 551                         height = fh->overlay_settings.height - y;
 552                 }
 553
 554                 /* ignore degenerate clips */
 555                 if (height <= 0) {
 556                         continue;
 557                 }
 558                 if (width <= 0) {
 559                         continue;
 560                 }
 561
 562                 /* apply clip for each scan line */
 563                 for (j = 0; j < height; ++j) {
 564                         /* reset bit for each pixel */
 565                         /* this can be optimized later if need be */
 566                         mask = fh->overlay_mask + (y + j) * mask_line_size;
 567                         for (k = 0; k < width; ++k) {
 568                                 mask[(x + k) / 32] &=
 569                                     ~((u32) 1 << (x + k) % 32);
 570                         }
 571                 }
 572         }
 573 }
 574
 575 /* Enable/Disable uncompressed memory grabbing of the 36057 */
 576
 577 void
 578 zr36057_set_memgrab (struct zoran *zr,
 579                      int           mode)
 580 {
 581         if (mode) {
 582                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 583                  * means a capture is already in progress, but FrameGrab==1
 584                  * doesn't necessary mean that.  It's more correct to say a 1
 585                  * to 0 transition indicates a capture completed.  If a
 586                  * capture is pending when capturing is tuned off, FrameGrab
 587                  * will be stuck at 1 until capturing is turned back on.
 588                  */
 589                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 590                         dprintk(1,
 591                                 KERN_WARNING
 592                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 593                                 ZR_DEVNAME(zr));
 594
 595                 /* switch on VSync interrupts */
 596                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 597                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 598
 599                 /* enable SnapShot */
 600                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 601
 602                 /* Set zr36057 video front end  and enable video */
 603                 zr36057_set_vfe(zr, zr->v4l_settings.width,
 604                                 zr->v4l_settings.height,
 605                                 zr->v4l_settings.format);
 606
 607                 zr->v4l_memgrab_active = 1;
 608         } else {
 609                 /* switch off VSync interrupts */
 610                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 611
 612                 zr->v4l_memgrab_active = 0;
 613                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 614
 615                 /* reenable grabbing to screen if it was running */
 616                 if (zr->v4l_overlay_active) {
 617                         zr36057_overlay(zr, 1);
 618                 } else {
 619                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 620                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 621                 }
 622         }
 623 }
 624
 625 int
 626 wait_grab_pending (struct zoran *zr)
 627 {
 628         unsigned long flags;
 629
 630         /* wait until all pending grabs are finished */
 631
 632         if (!zr->v4l_memgrab_active)
 633                 return 0;
 634
 635         wait_event_interruptible(zr->v4l_capq,
 636                         (zr->v4l_pend_tail == zr->v4l_pend_head));
 637         if (signal_pending(current))
 638                 return -ERESTARTSYS;
 639
 640         spin_lock_irqsave(&zr->spinlock, flags);
 641         zr36057_set_memgrab(zr, 0);
 642         spin_unlock_irqrestore(&zr->spinlock, flags);
 643
 644         return 0;
 645 }
 646
 647 /*****************************************************************************
 648  *                                                                           *
 649  *  Set up the Buz-specific MJPEG part                                       *
 650  *                                                                           *
 651  *****************************************************************************/
 652
 653 static inline void
 654 set_frame (struct zoran *zr,
 655            int           val)
 656 {
 657         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 658 }
 659
 660 static void
 661 set_videobus_dir (struct zoran *zr,
 662                   int           val)
 663 {
 664         switch (zr->card.type) {
 665         case LML33:
 666         case LML33R10:
 667                 if (!lml33dpath)
 668                         GPIO(zr, 5, val);
 669                 else
 670                         GPIO(zr, 5, 1);
 671                 break;
 672         default:
 673                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
 674                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
 675                 break;
 676         }
 677 }
 678
 679 static void
 680 init_jpeg_queue (struct zoran *zr)
 681 {
 682         int i;
 683
 684         /* re-initialize DMA ring stuff */
 685         zr->jpg_que_head = 0;
 686         zr->jpg_dma_head = 0;
 687         zr->jpg_dma_tail = 0;
 688         zr->jpg_que_tail = 0;
 689         zr->jpg_seq_num = 0;
 690         zr->JPEG_error = 0;
 691         zr->num_errors = 0;
 692         zr->jpg_err_seq = 0;
 693         zr->jpg_err_shift = 0;
 694         zr->jpg_queued_num = 0;
 695         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 696                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 697         }
 698         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 699                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 700         }
 701 }
 702
 703 static void
 704 zr36057_set_jpg (struct zoran          *zr,
 705                  enum zoran_codec_mode  mode)
 706 {
 707         struct tvnorm *tvn;
 708         u32 reg;
 709
 710         tvn = zr->timing;
 711
 712         /* assert P_Reset, disable code transfer, deassert Active */
 713         btwrite(0, ZR36057_JPC);
 714
 715         /* MJPEG compression mode */
 716         switch (mode) {
 717
 718         case BUZ_MODE_MOTION_COMPRESS:
 719         default:
 720                 reg = ZR36057_JMC_MJPGCmpMode;
 721                 break;
 722
 723         case BUZ_MODE_MOTION_DECOMPRESS:
 724                 reg = ZR36057_JMC_MJPGExpMode;
 725                 reg |= ZR36057_JMC_SyncMstr;
 726                 /* RJ: The following is experimental - improves the output to screen */
 727                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 728                 break;
 729
 730         case BUZ_MODE_STILL_COMPRESS:
 731                 reg = ZR36057_JMC_JPGCmpMode;
 732                 break;
 733
 734         case BUZ_MODE_STILL_DECOMPRESS:
 735                 reg = ZR36057_JMC_JPGExpMode;
 736                 break;
 737
 738         }
 739         reg |= ZR36057_JMC_JPG;
 740         if (zr->jpg_settings.field_per_buff == 1)
 741                 reg |= ZR36057_JMC_Fld_per_buff;
 742         btwrite(reg, ZR36057_JMC);
 743
 744         /* vertical */
 745         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 746         reg = (6 << ZR36057_VSP_VsyncSize) |
 747               (tvn->Ht << ZR36057_VSP_FrmTot);
 748         btwrite(reg, ZR36057_VSP);
 749         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 750               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 751         btwrite(reg, ZR36057_FVAP);
 752
 753         /* horizontal */
 754         if (zr->card.vfe_pol.hsync_pol)
 755                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 756         else
 757                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 758         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 759               (tvn->Wt << ZR36057_HSP_LineTot);
 760         btwrite(reg, ZR36057_HSP);
 761         reg = ((zr->jpg_settings.img_x +
 762                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 763               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 764         btwrite(reg, ZR36057_FHAP);
 765
 766         /* field process parameters */
 767         if (zr->jpg_settings.odd_even)
 768                 reg = ZR36057_FPP_Odd_Even;
 769         else
 770                 reg = 0;
 771
 772         btwrite(reg, ZR36057_FPP);
 773
 774         /* Set proper VCLK Polarity, else colors will be wrong during playback */
 775         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 776
 777         /* code base address */
 778         reg = virt_to_bus(zr->stat_com);
 779         btwrite(reg, ZR36057_JCBA);
 780
 781         /* FIFO threshold (FIFO is 160. double words) */
 782         /* NOTE: decimal values here */
 783         switch (mode) {
 784
 785         case BUZ_MODE_STILL_COMPRESS:
 786         case BUZ_MODE_MOTION_COMPRESS:
 787                 if (zr->card.type != BUZ)
 788                         reg = 140;
 789                 else
 790                         reg = 60;
 791                 break;
 792
 793         case BUZ_MODE_STILL_DECOMPRESS:
 794         case BUZ_MODE_MOTION_DECOMPRESS:
 795                 reg = 20;
 796                 break;
 797
 798         default:
 799                 reg = 80;
 800                 break;
 801
 802         }
 803         btwrite(reg, ZR36057_JCFT);
 804         zr36057_adjust_vfe(zr, mode);
 805
 806 }
 807
 808 void
 809 print_interrupts (struct zoran *zr)
 810 {
 811         int res, noerr = 0;
 812
 813         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 814         if ((res = zr->field_counter) < -1 || res > 1) {
 815                 printk(KERN_CONT " FD:%d", res);
 816         }
 817         if ((res = zr->intr_counter_GIRQ1) != 0) {
 818                 printk(KERN_CONT " GIRQ1:%d", res);
 819                 noerr++;
 820         }
 821         if ((res = zr->intr_counter_GIRQ0) != 0) {
 822                 printk(KERN_CONT " GIRQ0:%d", res);
 823                 noerr++;
 824         }
 825         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 826                 printk(KERN_CONT " CodRepIRQ:%d", res);
 827                 noerr++;
 828         }
 829         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 830                 printk(KERN_CONT " JPEGRepIRQ:%d", res);
 831                 noerr++;
 832         }
 833         if (zr->JPEG_max_missed) {
 834                 printk(KERN_CONT " JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 835                        zr->JPEG_min_missed);
 836         }
 837         if (zr->END_event_missed) {
 838                 printk(KERN_CONT " ENDs missed: %d", zr->END_event_missed);
 839         }
 840         //if (zr->jpg_queued_num) {
 841         printk(KERN_CONT " queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 842                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 843         //}
 844         if (!noerr) {
 845                 printk(KERN_CONT ": no interrupts detected.");
 846         }
 847         printk(KERN_CONT "\n");
 848 }
 849
 850 void
 851 clear_interrupt_counters (struct zoran *zr)
 852 {
 853         zr->intr_counter_GIRQ1 = 0;
 854         zr->intr_counter_GIRQ0 = 0;
 855         zr->intr_counter_CodRepIRQ = 0;
 856         zr->intr_counter_JPEGRepIRQ = 0;
 857         zr->field_counter = 0;
 858         zr->IRQ1_in = 0;
 859         zr->IRQ1_out = 0;
 860         zr->JPEG_in = 0;
 861         zr->JPEG_out = 0;
 862         zr->JPEG_0 = 0;
 863         zr->JPEG_1 = 0;
 864         zr->END_event_missed = 0;
 865         zr->JPEG_missed = 0;
 866         zr->JPEG_max_missed = 0;
 867         zr->JPEG_min_missed = 0x7fffffff;
 868 }
 869
 870 static u32
 871 count_reset_interrupt (struct zoran *zr)
 872 {
 873         u32 isr;
 874
 875         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 876                 if (isr & ZR36057_ISR_GIRQ1) {
 877                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 878                         zr->intr_counter_GIRQ1++;
 879                 }
 880                 if (isr & ZR36057_ISR_GIRQ0) {
 881                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 882                         zr->intr_counter_GIRQ0++;
 883                 }
 884                 if (isr & ZR36057_ISR_CodRepIRQ) {
 885                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 886                         zr->intr_counter_CodRepIRQ++;
 887                 }
 888                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
 889                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 890                         zr->intr_counter_JPEGRepIRQ++;
 891                 }
 892         }
 893         return isr;
 894 }
 895
 896 void
 897 jpeg_start (struct zoran *zr)
 898 {
 899         int reg;
 900
 901         zr->frame_num = 0;
 902
 903         /* deassert P_reset, disable code transfer, deassert Active */
 904         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 905         /* stop flushing the internal code buffer */
 906         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 907         /* enable code transfer */
 908         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 909
 910         /* clear IRQs */
 911         btwrite(IRQ_MASK, ZR36057_ISR);
 912         /* enable the JPEG IRQs */
 913         btwrite(zr->card.jpeg_int |
 914                         ZR36057_ICR_JPEGRepIRQ |
 915                         ZR36057_ICR_IntPinEn,
 916                 ZR36057_ICR);
 917
 918         set_frame(zr, 0);       // \FRAME
 919
 920         /* set the JPEG codec guest ID */
 921         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 922                (0 << ZR36057_JCGI_JPEGuestReg);
 923         btwrite(reg, ZR36057_JCGI);
 924
 925         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 926             zr->card.video_codec == CODEC_TYPE_ZR36050) {
 927                 /* Enable processing on the ZR36016 */
 928                 if (zr->vfe)
 929                         zr36016_write(zr->vfe, 0, 1);
 930
 931                 /* load the address of the GO register in the ZR36050 latch */
 932                 post_office_write(zr, 0, 0, 0);
 933         }
 934
 935         /* assert Active */
 936         btor(ZR36057_JPC_Active, ZR36057_JPC);
 937
 938         /* enable the Go generation */
 939         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 940         udelay(30);
 941
 942         set_frame(zr, 1);       // /FRAME
 943
 944         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 945 }
 946
 947 void
 948 zr36057_enable_jpg (struct zoran          *zr,
 949                     enum zoran_codec_mode  mode)
 950 {
 951         struct vfe_settings cap;
 952         int field_size =
 953             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 954
 955         zr->codec_mode = mode;
 956
 957         cap.x = zr->jpg_settings.img_x;
 958         cap.y = zr->jpg_settings.img_y;
 959         cap.width = zr->jpg_settings.img_width;
 960         cap.height = zr->jpg_settings.img_height;
 961         cap.decimation =
 962             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
 963         cap.quality = zr->jpg_settings.jpg_comp.quality;
 964
 965         switch (mode) {
 966
 967         case BUZ_MODE_MOTION_COMPRESS: {
 968                 struct jpeg_app_marker app;
 969                 struct jpeg_com_marker com;
 970
 971                 /* In motion compress mode, the decoder output must be enabled, and
 972                  * the video bus direction set to input.
 973                  */
 974                 set_videobus_dir(zr, 0);
 975                 decoder_call(zr, video, s_stream, 1);
 976                 encoder_call(zr, video, s_routing, 0, 0, 0);
 977
 978                 /* Take the JPEG codec and the VFE out of sleep */
 979                 jpeg_codec_sleep(zr, 0);
 980
 981                 /* set JPEG app/com marker */
 982                 app.appn = zr->jpg_settings.jpg_comp.APPn;
 983                 app.len = zr->jpg_settings.jpg_comp.APP_len;
 984                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
 985                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
 986                                    sizeof(struct jpeg_app_marker), &app);
 987
 988                 com.len = zr->jpg_settings.jpg_comp.COM_len;
 989                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
 990                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
 991                                    sizeof(struct jpeg_com_marker), &com);
 992
 993                 /* Setup the JPEG codec */
 994                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
 995                                    sizeof(int), &field_size);
 996                 zr->codec->set_video(zr->codec, zr->timing, &cap,
 997                                      &zr->card.vfe_pol);
 998                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
 999
1000                 /* Setup the VFE */
1001                 if (zr->vfe) {
1002                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1003                                          sizeof(int), &field_size);
1004                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1005                                            &zr->card.vfe_pol);
1006                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1007                 }
1008
1009                 init_jpeg_queue(zr);
1010                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1011
1012                 clear_interrupt_counters(zr);
1013                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1014                         ZR_DEVNAME(zr));
1015                 break;
1016         }
1017
1018         case BUZ_MODE_MOTION_DECOMPRESS:
1019                 /* In motion decompression mode, the decoder output must be disabled, and
1020                  * the video bus direction set to output.
1021                  */
1022                 decoder_call(zr, video, s_stream, 0);
1023                 set_videobus_dir(zr, 1);
1024                 encoder_call(zr, video, s_routing, 1, 0, 0);
1025
1026                 /* Take the JPEG codec and the VFE out of sleep */
1027                 jpeg_codec_sleep(zr, 0);
1028                 /* Setup the VFE */
1029                 if (zr->vfe) {
1030                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1031                                            &zr->card.vfe_pol);
1032                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1033                 }
1034                 /* Setup the JPEG codec */
1035                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1036                                      &zr->card.vfe_pol);
1037                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1038
1039                 init_jpeg_queue(zr);
1040                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1041
1042                 clear_interrupt_counters(zr);
1043                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1044                         ZR_DEVNAME(zr));
1045                 break;
1046
1047         case BUZ_MODE_IDLE:
1048         default:
1049                 /* shut down processing */
1050                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1051                       ZR36057_ICR);
1052                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1053                         ZR36057_ISR);
1054                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1055
1056                 msleep(50);
1057
1058                 set_videobus_dir(zr, 0);
1059                 set_frame(zr, 1);       // /FRAME
1060                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1061                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1062                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1063                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1064                 jpeg_codec_reset(zr);
1065                 jpeg_codec_sleep(zr, 1);
1066                 zr36057_adjust_vfe(zr, mode);
1067
1068                 decoder_call(zr, video, s_stream, 1);
1069                 encoder_call(zr, video, s_routing, 0, 0, 0);
1070
1071                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1072                 break;
1073
1074         }
1075 }
1076
1077 /* when this is called the spinlock must be held */
1078 void
1079 zoran_feed_stat_com (struct zoran *zr)
1080 {
1081         /* move frames from pending queue to DMA */
1082
1083         int frame, i, max_stat_com;
1084
1085         max_stat_com =
1086             (zr->jpg_settings.TmpDcm ==
1087              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1088
1089         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1090                zr->jpg_dma_head < zr->jpg_que_head) {
1091
1092                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1093                 if (zr->jpg_settings.TmpDcm == 1) {
1094                         /* fill 1 stat_com entry */
1095                         i = (zr->jpg_dma_head -
1096                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1097                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1098                                 break;
1099                         zr->stat_com[i] =
1100                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1101                 } else {
1102                         /* fill 2 stat_com entries */
1103                         i = ((zr->jpg_dma_head -
1104                               zr->jpg_err_shift) & 1) * 2;
1105                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1106                                 break;
1107                         zr->stat_com[i] =
1108                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1109                         zr->stat_com[i + 1] =
1110                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1111                 }
1112                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1113                 zr->jpg_dma_head++;
1114
1115         }
1116         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1117                 zr->jpg_queued_num++;
1118 }
1119
1120 /* when this is called the spinlock must be held */
1121 static void
1122 zoran_reap_stat_com (struct zoran *zr)
1123 {
1124         /* move frames from DMA queue to done queue */
1125
1126         int i;
1127         u32 stat_com;
1128         unsigned int seq;
1129         unsigned int dif;
1130         struct zoran_buffer *buffer;
1131         int frame;
1132
1133         /* In motion decompress we don't have a hardware frame counter,
1134          * we just count the interrupts here */
1135
1136         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1137                 zr->jpg_seq_num++;
1138         }
1139         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1140                 if (zr->jpg_settings.TmpDcm == 1)
1141                         i = (zr->jpg_dma_tail -
1142                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1143                 else
1144                         i = ((zr->jpg_dma_tail -
1145                               zr->jpg_err_shift) & 1) * 2 + 1;
1146
1147                 stat_com = le32_to_cpu(zr->stat_com[i]);
1148
1149                 if ((stat_com & 1) == 0) {
1150                         return;
1151                 }
1152                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1153                 buffer = &zr->jpg_buffers.buffer[frame];
1154                 v4l2_get_timestamp(&buffer->bs.timestamp);
1155
1156                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1157                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1158
1159                         /* update sequence number with the help of the counter in stat_com */
1160
1161                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1162                         dif = (seq - zr->jpg_seq_num) & 0xff;
1163                         zr->jpg_seq_num += dif;
1164                 } else {
1165                         buffer->bs.length = 0;
1166                 }
1167                 buffer->bs.seq =
1168                     zr->jpg_settings.TmpDcm ==
1169                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1170                 buffer->state = BUZ_STATE_DONE;
1171
1172                 zr->jpg_dma_tail++;
1173         }
1174 }
1175
1176 static void zoran_restart(struct zoran *zr)
1177 {
1178         /* Now the stat_comm buffer is ready for restart */
1179         unsigned int status = 0;
1180         int mode;
1181
1182         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1183                 decoder_call(zr, video, g_input_status, &status);
1184                 mode = CODEC_DO_COMPRESSION;
1185         } else {
1186                 status = V4L2_IN_ST_NO_SIGNAL;
1187                 mode = CODEC_DO_EXPANSION;
1188         }
1189         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1190             !(status & V4L2_IN_ST_NO_SIGNAL)) {
1191                 /********** RESTART code *************/
1192                 jpeg_codec_reset(zr);
1193                 zr->codec->set_mode(zr->codec, mode);
1194                 zr36057_set_jpg(zr, zr->codec_mode);
1195                 jpeg_start(zr);
1196
1197                 if (zr->num_errors <= 8)
1198                         dprintk(2, KERN_INFO "%s: Restart\n",
1199                                 ZR_DEVNAME(zr));
1200
1201                 zr->JPEG_missed = 0;
1202                 zr->JPEG_error = 2;
1203                 /********** End RESTART code ***********/
1204         }
1205 }
1206
1207 static void
1208 error_handler (struct zoran *zr,
1209                u32           astat,
1210                u32           stat)
1211 {
1212         int i;
1213
1214         /* This is JPEG error handling part */
1215         if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1216             zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1217                 return;
1218         }
1219
1220         if ((stat & 1) == 0 &&
1221             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1222             zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1223                 /* No free buffers... */
1224                 zoran_reap_stat_com(zr);
1225                 zoran_feed_stat_com(zr);
1226                 wake_up_interruptible(&zr->jpg_capq);
1227                 zr->JPEG_missed = 0;
1228                 return;
1229         }
1230
1231         if (zr->JPEG_error == 1) {
1232                 zoran_restart(zr);
1233                 return;
1234         }
1235
1236         /*
1237          * First entry: error just happened during normal operation
1238          *
1239          * In BUZ_MODE_MOTION_COMPRESS:
1240          *
1241          * Possible glitch in TV signal. In this case we should
1242          * stop the codec and wait for good quality signal before
1243          * restarting it to avoid further problems
1244          *
1245          * In BUZ_MODE_MOTION_DECOMPRESS:
1246          *
1247          * Bad JPEG frame: we have to mark it as processed (codec crashed
1248          * and was not able to do it itself), and to remove it from queue.
1249          */
1250         btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1251         udelay(1);
1252         stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1253         btwrite(0, ZR36057_JPC);
1254         btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1255         jpeg_codec_reset(zr);
1256         jpeg_codec_sleep(zr, 1);
1257         zr->JPEG_error = 1;
1258         zr->num_errors++;
1259
1260         /* Report error */
1261         if (zr36067_debug > 1 && zr->num_errors <= 8) {
1262                 long frame;
1263                 int j;
1264
1265                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1266                 printk(KERN_ERR
1267                        "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1268                        ZR_DEVNAME(zr), stat, zr->last_isr,
1269                        zr->jpg_que_tail, zr->jpg_dma_tail,
1270                        zr->jpg_dma_head, zr->jpg_que_head,
1271                        zr->jpg_seq_num, frame);
1272                 printk(KERN_INFO "stat_com frames:");
1273                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1274                         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1275                                 if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1276                                         printk(KERN_CONT "% d->%d", j, i);
1277                         }
1278                 }
1279                 printk(KERN_CONT "\n");
1280         }
1281         /* Find an entry in stat_com and rotate contents */
1282         if (zr->jpg_settings.TmpDcm == 1)
1283                 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1284         else
1285                 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1286         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1287                 /* Mimic zr36067 operation */
1288                 zr->stat_com[i] |= cpu_to_le32(1);
1289                 if (zr->jpg_settings.TmpDcm != 1)
1290                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1291                 /* Refill */
1292                 zoran_reap_stat_com(zr);
1293                 zoran_feed_stat_com(zr);
1294                 wake_up_interruptible(&zr->jpg_capq);
1295                 /* Find an entry in stat_com again after refill */
1296                 if (zr->jpg_settings.TmpDcm == 1)
1297                         i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1298                 else
1299                         i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1300         }
1301         if (i) {
1302                 /* Rotate stat_comm entries to make current entry first */
1303                 int j;
1304                 __le32 bus_addr[BUZ_NUM_STAT_COM];
1305
1306                 /* Here we are copying the stat_com array, which
1307                  * is already in little endian format, so
1308                  * no endian conversions here
1309                  */
1310                 memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1311
1312                 for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1313                         zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
1314
1315                 zr->jpg_err_shift += i;
1316                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1317         }
1318         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1319                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1320         zoran_restart(zr);
1321 }
1322
1323 irqreturn_t
1324 zoran_irq (int             irq,
1325            void           *dev_id)
1326 {
1327         u32 stat, astat;
1328         int count;
1329         struct zoran *zr;
1330         unsigned long flags;
1331
1332         zr = dev_id;
1333         count = 0;
1334
1335         if (zr->testing) {
1336                 /* Testing interrupts */
1337                 spin_lock_irqsave(&zr->spinlock, flags);
1338                 while ((stat = count_reset_interrupt(zr))) {
1339                         if (count++ > 100) {
1340                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1341                                 dprintk(1,
1342                                         KERN_ERR
1343                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1344                                         ZR_DEVNAME(zr), stat);
1345                                 wake_up_interruptible(&zr->test_q);
1346                         }
1347                 }
1348                 zr->last_isr = stat;
1349                 spin_unlock_irqrestore(&zr->spinlock, flags);
1350                 return IRQ_HANDLED;
1351         }
1352
1353         spin_lock_irqsave(&zr->spinlock, flags);
1354         while (1) {
1355                 /* get/clear interrupt status bits */
1356                 stat = count_reset_interrupt(zr);
1357                 astat = stat & IRQ_MASK;
1358                 if (!astat) {
1359                         break;
1360                 }
1361                 dprintk(4,
1362                         KERN_DEBUG
1363                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1364                         astat, btread(ZR36057_ICR));
1365                 if (astat & zr->card.vsync_int) {       // SW
1366
1367                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1368                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1369                                 /* count missed interrupts */
1370                                 zr->JPEG_missed++;
1371                         }
1372                         //post_office_read(zr,1,0);
1373                         /* Interrupts may still happen when
1374                          * zr->v4l_memgrab_active is switched off.
1375                          * We simply ignore them */
1376
1377                         if (zr->v4l_memgrab_active) {
1378                                 /* A lot more checks should be here ... */
1379                                 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1380                                         dprintk(1,
1381                                                 KERN_WARNING
1382                                                 "%s: BuzIRQ with SnapShot off ???\n",
1383                                                 ZR_DEVNAME(zr));
1384
1385                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1386                                         /* There is a grab on a frame going on, check if it has finished */
1387                                         if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1388                                                 /* it is finished, notify the user */
1389
1390                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1391                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1392                                                 v4l2_get_timestamp(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1393                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1394                                                 zr->v4l_pend_tail++;
1395                                         }
1396                                 }
1397
1398                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1399                                         wake_up_interruptible(&zr->v4l_capq);
1400
1401                                 /* Check if there is another grab queued */
1402
1403                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1404                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1405                                         int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1406                                         u32 reg;
1407
1408                                         zr->v4l_grab_frame = frame;
1409
1410                                         /* Set zr36057 video front end and enable video */
1411
1412                                         /* Buffer address */
1413
1414                                         reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1415                                         btwrite(reg, ZR36057_VDTR);
1416                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1417                                                 reg += zr->v4l_settings.bytesperline;
1418                                         btwrite(reg, ZR36057_VDBR);
1419
1420                                         /* video stride, status, and frame grab register */
1421                                         reg = 0;
1422                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1423                                                 reg += zr->v4l_settings.bytesperline;
1424                                         reg = (reg << ZR36057_VSSFGR_DispStride);
1425                                         reg |= ZR36057_VSSFGR_VidOvf;
1426                                         reg |= ZR36057_VSSFGR_SnapShot;
1427                                         reg |= ZR36057_VSSFGR_FrameGrab;
1428                                         btwrite(reg, ZR36057_VSSFGR);
1429
1430                                         btor(ZR36057_VDCR_VidEn,
1431                                              ZR36057_VDCR);
1432                                 }
1433                         }
1434
1435                         /* even if we don't grab, we do want to increment
1436                          * the sequence counter to see lost frames */
1437                         zr->v4l_grab_seq++;
1438                 }
1439 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1440                 if (astat & ZR36057_ISR_CodRepIRQ) {
1441                         zr->intr_counter_CodRepIRQ++;
1442                         IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1443                                 ZR_DEVNAME(zr)));
1444                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1445                 }
1446 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1447
1448 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1449                 if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1450                     (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1451                      zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1452                         if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1453                                 char sv[BUZ_NUM_STAT_COM + 1];
1454                                 int i;
1455
1456                                 printk(KERN_INFO
1457                                        "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1458                                        ZR_DEVNAME(zr), stat,
1459                                        zr->jpg_settings.odd_even,
1460                                        zr->jpg_settings.field_per_buff,
1461                                        zr->JPEG_missed);
1462
1463                                 for (i = 0; i < BUZ_NUM_STAT_COM; i++)
1464                                         sv[i] = le32_to_cpu(zr->stat_com[i]) & 1 ? '1' : '0';
1465                                 sv[BUZ_NUM_STAT_COM] = 0;
1466                                 printk(KERN_INFO
1467                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1468                                        ZR_DEVNAME(zr), sv,
1469                                        zr->jpg_que_tail,
1470                                        zr->jpg_dma_tail,
1471                                        zr->jpg_dma_head,
1472                                        zr->jpg_que_head);
1473                         } else {
1474                                 /* Get statistics */
1475                                 if (zr->JPEG_missed > zr->JPEG_max_missed)
1476                                         zr->JPEG_max_missed = zr->JPEG_missed;
1477                                 if (zr->JPEG_missed < zr->JPEG_min_missed)
1478                                         zr->JPEG_min_missed = zr->JPEG_missed;
1479                         }
1480
1481                         if (zr36067_debug > 2 && zr->frame_num < 6) {
1482                                 int i;
1483
1484                                 printk(KERN_INFO "%s: seq=%ld stat_com:",
1485                                        ZR_DEVNAME(zr), zr->jpg_seq_num);
1486                                 for (i = 0; i < 4; i++) {
1487                                         printk(KERN_CONT " %08x",
1488                                                le32_to_cpu(zr->stat_com[i]));
1489                                 }
1490                                 printk(KERN_CONT "\n");
1491                         }
1492                         zr->frame_num++;
1493                         zr->JPEG_missed = 0;
1494                         zr->JPEG_error = 0;
1495                         zoran_reap_stat_com(zr);
1496                         zoran_feed_stat_com(zr);
1497                         wake_up_interruptible(&zr->jpg_capq);
1498                 }
1499 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1500
1501                 /* DATERR, too many fields missed, error processing */
1502                 if ((astat & zr->card.jpeg_int) ||
1503                     zr->JPEG_missed > 25 ||
1504                     zr->JPEG_error == 1 ||
1505                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1506                      (zr->frame_num && (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1507                         error_handler(zr, astat, stat);
1508                 }
1509
1510                 count++;
1511                 if (count > 10) {
1512                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1513                                 ZR_DEVNAME(zr), count);
1514                         if (count > 20) {
1515                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1516                                 dprintk(2,
1517                                         KERN_ERR
1518                                         "%s: IRQ lockup, cleared int mask\n",
1519                                         ZR_DEVNAME(zr));
1520                                 break;
1521                         }
1522                 }
1523                 zr->last_isr = stat;
1524         }
1525         spin_unlock_irqrestore(&zr->spinlock, flags);
1526
1527         return IRQ_HANDLED;
1528 }
1529
1530 void
1531 zoran_set_pci_master (struct zoran *zr,
1532                       int           set_master)
1533 {
1534         if (set_master) {
1535                 pci_set_master(zr->pci_dev);
1536         } else {
1537                 u16 command;
1538
1539                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1540                 command &= ~PCI_COMMAND_MASTER;
1541                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1542         }
1543 }
1544
1545 void
1546 zoran_init_hardware (struct zoran *zr)
1547 {
1548         /* Enable bus-mastering */
1549         zoran_set_pci_master(zr, 1);
1550
1551         /* Initialize the board */
1552         if (zr->card.init) {
1553                 zr->card.init(zr);
1554         }
1555
1556         decoder_call(zr, core, init, 0);
1557         decoder_call(zr, video, s_std, zr->norm);
1558         decoder_call(zr, video, s_routing,
1559                 zr->card.input[zr->input].muxsel, 0, 0);
1560
1561         encoder_call(zr, core, init, 0);
1562         encoder_call(zr, video, s_std_output, zr->norm);
1563         encoder_call(zr, video, s_routing, 0, 0, 0);
1564
1565         /* toggle JPEG codec sleep to sync PLL */
1566         jpeg_codec_sleep(zr, 1);
1567         jpeg_codec_sleep(zr, 0);
1568
1569         /*
1570          * set individual interrupt enables (without GIRQ1)
1571          * but don't global enable until zoran_open()
1572          */
1573         zr36057_init_vfe(zr);
1574
1575         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1576
1577         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1578 }
1579
1580 void
1581 zr36057_restart (struct zoran *zr)
1582 {
1583         btwrite(0, ZR36057_SPGPPCR);
1584         mdelay(1);
1585         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1586         mdelay(1);
1587
1588         /* assert P_Reset */
1589         btwrite(0, ZR36057_JPC);
1590         /* set up GPIO direction - all output */
1591         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1592
1593         /* set up GPIO pins and guest bus timing */
1594         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1595 }
1596
1597 /*
1598  * initialize video front end
1599  */
1600
1601 static void
1602 zr36057_init_vfe (struct zoran *zr)
1603 {
1604         u32 reg;
1605
1606         reg = btread(ZR36057_VFESPFR);
1607         reg |= ZR36057_VFESPFR_LittleEndian;
1608         reg &= ~ZR36057_VFESPFR_VCLKPol;
1609         reg |= ZR36057_VFESPFR_ExtFl;
1610         reg |= ZR36057_VFESPFR_TopField;
1611         btwrite(reg, ZR36057_VFESPFR);
1612         reg = btread(ZR36057_VDCR);
1613         if (pci_pci_problems & PCIPCI_TRITON)
1614                 // || zr->revision < 1) // Revision 1 has also Triton support
1615                 reg &= ~ZR36057_VDCR_Triton;
1616         else
1617                 reg |= ZR36057_VDCR_Triton;
1618         btwrite(reg, ZR36057_VDCR);
1619 }