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