drivers/media/video/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  * 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
  60 static 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
  70 module_param(lml33dpath, bool, 0644);
  71 MODULE_PARM_DESC(lml33dpath,
  72                  "Use digital path capture mode (on LML33 cards)");
  73
  74 static void
  75 zr36057_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
  86 void
  87 GPIO (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
 110 int
 111 post_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
 129 int
 130 post_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
 145 int
 146 post_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
 165 static void
 166 dump_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
 184 static inline unsigned long
 185 get_time (void)
 186 {
 187         struct timeval tv;
 188
 189         do_gettimeofday(&tv);
 190         return (1000000 * tv.tv_sec + tv.tv_usec);
 191 }
 192
 193 void
 194 detect_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
 247 void
 248 jpeg_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
 267 int
 268 jpeg_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
 296 static void
 297 zr36057_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
 333 static void
 334 zr36057_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
 471 void
 472 zr36057_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 already 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
 538 void 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
 597 void
 598 zr36057_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
 645 int
 646 wait_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
 673 static inline void
 674 set_frame (struct zoran *zr,
 675            int           val)
 676 {
 677         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 678 }
 679
 680 static void
 681 set_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
 699 static void
 700 init_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
 723 static void
 724 zr36057_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
 828 void
 829 print_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
 870 void
 871 clear_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
 890 static u32
 891 count_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
 916 void
 917 jpeg_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
 967 void
 968 zr36057_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 */
1098 void
1099 zoran_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 */
1141 static void
1142 zoran_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
1196 static 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
1227 static void
1228 error_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
1343 irqreturn_t
1344 zoran_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 sv[BUZ_NUM_STAT_COM + 1];
1474                                 int i;
1475
1476                                 printk(KERN_INFO
1477                                        "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1478                                        ZR_DEVNAME(zr), stat,
1479                                        zr->jpg_settings.odd_even,
1480                                        zr->jpg_settings.field_per_buff,
1481                                        zr->JPEG_missed);
1482
1483                                 for (i = 0; i < BUZ_NUM_STAT_COM; i++)
1484                                         sv[i] = le32_to_cpu(zr->stat_com[i]) & 1 ? '1' : '0';
1485                                 sv[BUZ_NUM_STAT_COM] = 0;
1486                                 printk(KERN_INFO
1487                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1488                                        ZR_DEVNAME(zr), sv,
1489                                        zr->jpg_que_tail,
1490                                        zr->jpg_dma_tail,
1491                                        zr->jpg_dma_head,
1492                                        zr->jpg_que_head);
1493                         } else {
1494                                 /* Get statistics */
1495                                 if (zr->JPEG_missed > zr->JPEG_max_missed)
1496                                         zr->JPEG_max_missed = zr->JPEG_missed;
1497                                 if (zr->JPEG_missed < zr->JPEG_min_missed)
1498                                         zr->JPEG_min_missed = zr->JPEG_missed;
1499                         }
1500
1501                         if (zr36067_debug > 2 && zr->frame_num < 6) {
1502                                 int i;
1503
1504                                 printk(KERN_INFO "%s: seq=%ld stat_com:",
1505                                        ZR_DEVNAME(zr), zr->jpg_seq_num);
1506                                 for (i = 0; i < 4; i++) {
1507                                         printk(KERN_CONT " %08x",
1508                                                le32_to_cpu(zr->stat_com[i]));
1509                                 }
1510                                 printk(KERN_CONT "\n");
1511                         }
1512                         zr->frame_num++;
1513                         zr->JPEG_missed = 0;
1514                         zr->JPEG_error = 0;
1515                         zoran_reap_stat_com(zr);
1516                         zoran_feed_stat_com(zr);
1517                         wake_up_interruptible(&zr->jpg_capq);
1518                 }
1519 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1520
1521                 /* DATERR, too many fields missed, error processing */
1522                 if ((astat & zr->card.jpeg_int) ||
1523                     zr->JPEG_missed > 25 ||
1524                     zr->JPEG_error == 1 ||
1525                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1526                      (zr->frame_num & (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1527                         error_handler(zr, astat, stat);
1528                 }
1529
1530                 count++;
1531                 if (count > 10) {
1532                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1533                                 ZR_DEVNAME(zr), count);
1534                         if (count > 20) {
1535                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1536                                 dprintk(2,
1537                                         KERN_ERR
1538                                         "%s: IRQ lockup, cleared int mask\n",
1539                                         ZR_DEVNAME(zr));
1540                                 break;
1541                         }
1542                 }
1543                 zr->last_isr = stat;
1544         }
1545         spin_unlock_irqrestore(&zr->spinlock, flags);
1546
1547         return IRQ_HANDLED;
1548 }
1549
1550 void
1551 zoran_set_pci_master (struct zoran *zr,
1552                       int           set_master)
1553 {
1554         if (set_master) {
1555                 pci_set_master(zr->pci_dev);
1556         } else {
1557                 u16 command;
1558
1559                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1560                 command &= ~PCI_COMMAND_MASTER;
1561                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1562         }
1563 }
1564
1565 void
1566 zoran_init_hardware (struct zoran *zr)
1567 {
1568         /* Enable bus-mastering */
1569         zoran_set_pci_master(zr, 1);
1570
1571         /* Initialize the board */
1572         if (zr->card.init) {
1573                 zr->card.init(zr);
1574         }
1575
1576         decoder_call(zr, core, init, 0);
1577         decoder_call(zr, core, s_std, zr->norm);
1578         decoder_call(zr, video, s_routing,
1579                 zr->card.input[zr->input].muxsel, 0, 0);
1580
1581         encoder_call(zr, core, init, 0);
1582         encoder_call(zr, video, s_std_output, zr->norm);
1583         encoder_call(zr, video, s_routing, 0, 0, 0);
1584
1585         /* toggle JPEG codec sleep to sync PLL */
1586         jpeg_codec_sleep(zr, 1);
1587         jpeg_codec_sleep(zr, 0);
1588
1589         /* set individual interrupt enables (without GIRQ1)
1590          * but don't global enable until zoran_open() */
1591
1592         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1593         // It looks like using only JPEGRepIRQEn is not always reliable,
1594         // may be when JPEG codec crashes it won't generate IRQ? So,
1595          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1596             zr36057_init_vfe(zr);
1597
1598         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1599
1600         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1601 }
1602
1603 void
1604 zr36057_restart (struct zoran *zr)
1605 {
1606         btwrite(0, ZR36057_SPGPPCR);
1607         mdelay(1);
1608         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1609         mdelay(1);
1610
1611         /* assert P_Reset */
1612         btwrite(0, ZR36057_JPC);
1613         /* set up GPIO direction - all output */
1614         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1615
1616         /* set up GPIO pins and guest bus timing */
1617         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1618 }
1619
1620 /*
1621  * initialize video front end
1622  */
1623
1624 static void
1625 zr36057_init_vfe (struct zoran *zr)
1626 {
1627         u32 reg;
1628
1629         reg = btread(ZR36057_VFESPFR);
1630         reg |= ZR36057_VFESPFR_LittleEndian;
1631         reg &= ~ZR36057_VFESPFR_VCLKPol;
1632         reg |= ZR36057_VFESPFR_ExtFl;
1633         reg |= ZR36057_VFESPFR_TopField;
1634         btwrite(reg, ZR36057_VFESPFR);
1635         reg = btread(ZR36057_VDCR);
1636         if (pci_pci_problems & PCIPCI_TRITON)
1637                 // || zr->revision < 1) // Revision 1 has also Triton support
1638                 reg &= ~ZR36057_VDCR_Triton;
1639         else
1640                 reg |= ZR36057_VDCR_Triton;
1641         btwrite(reg, ZR36057_VDCR);
1642 }