drivers/media/video/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 #include <linux/byteorder/generic.h>
  35
  36 #include <linux/interrupt.h>
  37 #include <linux/proc_fs.h>
  38 #include <linux/i2c.h>
  39 #include <linux/i2c-algo-bit.h>
  40 #include <linux/videodev.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/sem.h>
  43
  44 #include <linux/pci.h>
  45 #include <linux/video_decoder.h>
  46 #include <linux/video_encoder.h>
  47 #include <linux/delay.h>
  48 #include <linux/wait.h>
  49
  50 #include <asm/io.h>
  51
  52 #include "videocodec.h"
  53 #include "zoran.h"
  54 #include "zoran_device.h"
  55 #include "zoran_card.h"
  56
  57 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
  58                    ZR36057_ISR_GIRQ1 | \
  59                    ZR36057_ISR_JPEGRepIRQ )
  60
  61 extern const struct zoran_format zoran_formats[];
  62
  63 static int lml33dpath = 0;      /* 1 will use digital path in capture
  64                                  * mode instead of analog. It can be
  65                                  * used for picture adjustments using
  66                                  * tool like xawtv while watching image
  67                                  * on TV monitor connected to the output.
  68                                  * However, due to absence of 75 Ohm
  69                                  * load on Bt819 input, there will be
  70                                  * some image imperfections */
  71
  72 module_param(lml33dpath, bool, 0644);
  73 MODULE_PARM_DESC(lml33dpath,
  74                  "Use digital path capture mode (on LML33 cards)");
  75
  76 static void
  77 zr36057_init_vfe (struct zoran *zr);
  78
  79 /*
  80  * General Purpose I/O and Guest bus access
  81  */
  82
  83 /*
  84  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  85  * GPIO bit number in the card_info structure is set to 0.
  86  */
  87
  88 void
  89 GPIO (struct zoran *zr,
  90       int           bit,
  91       unsigned int  value)
  92 {
  93         u32 reg;
  94         u32 mask;
  95
  96         /* Make sure the bit number is legal
  97          * A bit number of -1 (lacking) gives a mask of 0,
  98          * making it harmless */
  99         mask = (1 << (24 + bit)) & 0xff000000;
 100         reg = btread(ZR36057_GPPGCR1) & ~mask;
 101         if (value) {
 102                 reg |= mask;
 103         }
 104         btwrite(reg, ZR36057_GPPGCR1);
 105         udelay(1);
 106 }
 107
 108 /*
 109  * Wait til post office is no longer busy
 110  */
 111
 112 int
 113 post_office_wait (struct zoran *zr)
 114 {
 115         u32 por;
 116
 117 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 118         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 119                 /* wait for something to happen */
 120         }
 121         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 122                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 123                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 124                         por);
 125                 return -1;
 126         }
 127
 128         return 0;
 129 }
 130
 131 int
 132 post_office_write (struct zoran *zr,
 133                    unsigned int  guest,
 134                    unsigned int  reg,
 135                    unsigned int  value)
 136 {
 137         u32 por;
 138
 139         por =
 140             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 141             ((reg & 7) << 16) | (value & 0xFF);
 142         btwrite(por, ZR36057_POR);
 143
 144         return post_office_wait(zr);
 145 }
 146
 147 int
 148 post_office_read (struct zoran *zr,
 149                   unsigned int  guest,
 150                   unsigned int  reg)
 151 {
 152         u32 por;
 153
 154         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 155         btwrite(por, ZR36057_POR);
 156         if (post_office_wait(zr) < 0) {
 157                 return -1;
 158         }
 159
 160         return btread(ZR36057_POR) & 0xFF;
 161 }
 162
 163 /*
 164  * detect guests
 165  */
 166
 167 static void
 168 dump_guests (struct zoran *zr)
 169 {
 170         if (zr36067_debug > 2) {
 171                 int i, guest[8];
 172
 173                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 174                         guest[i] = post_office_read(zr, i, 0);
 175                 }
 176
 177                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 178
 179                 for (i = 1; i < 8; i++) {
 180                         printk(" 0x%02x", guest[i]);
 181                 }
 182                 printk("\n");
 183         }
 184 }
 185
 186 static inline unsigned long
 187 get_time (void)
 188 {
 189         struct timeval tv;
 190
 191         do_gettimeofday(&tv);
 192         return (1000000 * tv.tv_sec + tv.tv_usec);
 193 }
 194
 195 void
 196 detect_guest_activity (struct zoran *zr)
 197 {
 198         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 199         unsigned long t0, t1;
 200
 201         dump_guests(zr);
 202         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 203                ZR_DEVNAME(zr));
 204         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 205                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
 206         }
 207
 208         timeout = 0;
 209         j = 0;
 210         t0 = get_time();
 211         while (timeout < 10000) {
 212                 udelay(10);
 213                 timeout++;
 214                 for (i = 1; (i < 8) && (j < 8); i++) {
 215                         res = post_office_read(zr, i, 0);
 216                         if (res != guest[i]) {
 217                                 t1 = get_time();
 218                                 change[j][0] = (t1 - t0);
 219                                 t0 = t1;
 220                                 change[j][1] = i;
 221                                 change[j][2] = res;
 222                                 j++;
 223                                 guest[i] = res;
 224                         }
 225                 }
 226                 if (j >= 8)
 227                         break;
 228         }
 229         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 230
 231         for (i = 1; i < 8; i++) {
 232                 printk(" 0x%02x", guest0[i]);
 233         }
 234         printk("\n");
 235         if (j == 0) {
 236                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 237                 return;
 238         }
 239         for (i = 0; i < j; i++) {
 240                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 241                        change[i][0], change[i][1], change[i][2]);
 242         }
 243 }
 244
 245 /*
 246  * JPEG Codec access
 247  */
 248
 249 void
 250 jpeg_codec_sleep (struct zoran *zr,
 251                   int           sleep)
 252 {
 253         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
 254         if (!sleep) {
 255                 dprintk(3,
 256                         KERN_DEBUG
 257                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 258                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 259                 udelay(500);
 260         } else {
 261                 dprintk(3,
 262                         KERN_DEBUG
 263                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 264                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 265                 udelay(2);
 266         }
 267 }
 268
 269 int
 270 jpeg_codec_reset (struct zoran *zr)
 271 {
 272         /* Take the codec out of sleep */
 273         jpeg_codec_sleep(zr, 0);
 274
 275         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 276                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 277                                   0);
 278                 udelay(2);
 279         } else {
 280                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
 281                 udelay(2);
 282                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
 283                 udelay(2);
 284         }
 285
 286         return 0;
 287 }
 288
 289 /*
 290  *   Set the registers for the size we have specified. Don't bother
 291  *   trying to understand this without the ZR36057 manual in front of
 292  *   you [AC].
 293  *
 294  *   PS: The manual is free for download in .pdf format from
 295  *   www.zoran.com - nicely done those folks.
 296  */
 297
 298 static void
 299 zr36057_adjust_vfe (struct zoran          *zr,
 300                     enum zoran_codec_mode  mode)
 301 {
 302         u32 reg;
 303
 304         switch (mode) {
 305         case BUZ_MODE_MOTION_DECOMPRESS:
 306                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 307                 reg = btread(ZR36057_VFEHCR);
 308                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 309                         reg += ((1 << 10) | 1);
 310                 }
 311                 btwrite(reg, ZR36057_VFEHCR);
 312                 break;
 313         case BUZ_MODE_MOTION_COMPRESS:
 314         case BUZ_MODE_IDLE:
 315         default:
 316                 if (zr->norm == VIDEO_MODE_NTSC ||
 317                     (zr->card.type == LML33R10 &&
 318                      zr->norm == VIDEO_MODE_PAL))
 319                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 320                 else
 321                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 322                 reg = btread(ZR36057_VFEHCR);
 323                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 324                         reg -= ((1 << 10) | 1);
 325                 }
 326                 btwrite(reg, ZR36057_VFEHCR);
 327                 break;
 328         }
 329 }
 330
 331 /*
 332  * set geometry
 333  */
 334
 335 static void
 336 zr36057_set_vfe (struct zoran              *zr,
 337                  int                        video_width,
 338                  int                        video_height,
 339                  const struct zoran_format *format)
 340 {
 341         struct tvnorm *tvn;
 342         unsigned HStart, HEnd, VStart, VEnd;
 343         unsigned DispMode;
 344         unsigned VidWinWid, VidWinHt;
 345         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 346         unsigned Wa, We, Ha, He;
 347         unsigned X, Y, HorDcm, VerDcm;
 348         u32 reg;
 349         unsigned mask_line_size;
 350
 351         tvn = zr->timing;
 352
 353         Wa = tvn->Wa;
 354         Ha = tvn->Ha;
 355
 356         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 357                 ZR_DEVNAME(zr), video_width, video_height);
 358
 359         if (zr->norm != VIDEO_MODE_PAL &&
 360             zr->norm != VIDEO_MODE_NTSC &&
 361             zr->norm != VIDEO_MODE_SECAM) {
 362                 dprintk(1,
 363                         KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
 364                         ZR_DEVNAME(zr), zr->norm);
 365                 return;
 366         }
 367         if (video_width < BUZ_MIN_WIDTH ||
 368             video_height < BUZ_MIN_HEIGHT ||
 369             video_width > Wa || video_height > Ha) {
 370                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 371                         ZR_DEVNAME(zr), video_width, video_height);
 372                 return;
 373         }
 374
 375         /**** zr36057 ****/
 376
 377         /* horizontal */
 378         VidWinWid = video_width;
 379         X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
 380         We = (VidWinWid * 64) / X;
 381         HorDcm = 64 - X;
 382         hcrop1 = 2 * ((tvn->Wa - We) / 4);
 383         hcrop2 = tvn->Wa - We - hcrop1;
 384         HStart = tvn->HStart ? tvn->HStart : 1;
 385         /* (Ronald) Original comment:
 386          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 387          * this is false. It inverses chroma values on the LML33R10 (so Cr
 388          * suddenly is shown as Cb and reverse, really cool effect if you
 389          * want to see blue faces, not useful otherwise). So don't use |1.
 390          * However, the DC10 has '0' as HStart, but does need |1, so we
 391          * use a dirty check...
 392          */
 393         HEnd = HStart + tvn->Wa - 1;
 394         HStart += hcrop1;
 395         HEnd -= hcrop2;
 396         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 397             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 398         if (zr->card.vfe_pol.hsync_pol)
 399                 reg |= ZR36057_VFEHCR_HSPol;
 400         btwrite(reg, ZR36057_VFEHCR);
 401
 402         /* Vertical */
 403         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 404         VidWinHt = DispMode ? video_height : video_height / 2;
 405         Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
 406         He = (VidWinHt * 64) / Y;
 407         VerDcm = 64 - Y;
 408         vcrop1 = (tvn->Ha / 2 - He) / 2;
 409         vcrop2 = tvn->Ha / 2 - He - vcrop1;
 410         VStart = tvn->VStart;
 411         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 412         VStart += vcrop1;
 413         VEnd -= vcrop2;
 414         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 415             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 416         if (zr->card.vfe_pol.vsync_pol)
 417                 reg |= ZR36057_VFEVCR_VSPol;
 418         btwrite(reg, ZR36057_VFEVCR);
 419
 420         /* scaler and pixel format */
 421         reg = 0;
 422         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 423         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 424         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 425         /* RJ: I don't know, why the following has to be the opposite
 426          * of the corresponding ZR36060 setting, but only this way
 427          * we get the correct colors when uncompressing to the screen  */
 428         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 429         /* RJ: Don't know if that is needed for NTSC also */
 430         if (zr->norm != VIDEO_MODE_NTSC)
 431                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 432         reg |= ZR36057_VFESPFR_TopField;
 433         if (HorDcm >= 48) {
 434                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 435         } else if (HorDcm >= 32) {
 436                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 437         } else if (HorDcm >= 16) {
 438                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 439         }
 440         reg |= format->vfespfr;
 441         btwrite(reg, ZR36057_VFESPFR);
 442
 443         /* display configuration */
 444         reg = (16 << ZR36057_VDCR_MinPix)
 445             | (VidWinHt << ZR36057_VDCR_VidWinHt)
 446             | (VidWinWid << ZR36057_VDCR_VidWinWid);
 447         if (pci_pci_problems & PCIPCI_TRITON)
 448                 // || zr->revision < 1) // Revision 1 has also Triton support
 449                 reg &= ~ZR36057_VDCR_Triton;
 450         else
 451                 reg |= ZR36057_VDCR_Triton;
 452         btwrite(reg, ZR36057_VDCR);
 453
 454         /* (Ronald) don't write this if overlay_mask = NULL */
 455         if (zr->overlay_mask) {
 456                 /* Write overlay clipping mask data, but don't enable overlay clipping */
 457                 /* RJ: since this makes only sense on the screen, we use
 458                  * zr->overlay_settings.width instead of video_width */
 459
 460                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 461                 reg = virt_to_bus(zr->overlay_mask);
 462                 btwrite(reg, ZR36057_MMTR);
 463                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 464                 btwrite(reg, ZR36057_MMBR);
 465                 reg =
 466                     mask_line_size - (zr->overlay_settings.width +
 467                                       31) / 32;
 468                 if (DispMode == 0)
 469                         reg += mask_line_size;
 470                 reg <<= ZR36057_OCR_MaskStride;
 471                 btwrite(reg, ZR36057_OCR);
 472         }
 473
 474         zr36057_adjust_vfe(zr, zr->codec_mode);
 475 }
 476
 477 /*
 478  * Switch overlay on or off
 479  */
 480
 481 void
 482 zr36057_overlay (struct zoran *zr,
 483                  int           on)
 484 {
 485         u32 reg;
 486
 487         if (on) {
 488                 /* do the necessary settings ... */
 489                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 490
 491                 zr36057_set_vfe(zr,
 492                                 zr->overlay_settings.width,
 493                                 zr->overlay_settings.height,
 494                                 zr->overlay_settings.format);
 495
 496                 /* Start and length of each line MUST be 4-byte aligned.
 497                  * This should be allready checked before the call to this routine.
 498                  * All error messages are internal driver checking only! */
 499
 500                 /* video display top and bottom registers */
 501                 reg = (long) zr->buffer.base +
 502                     zr->overlay_settings.x *
 503                     ((zr->overlay_settings.format->depth + 7) / 8) +
 504                     zr->overlay_settings.y *
 505                     zr->buffer.bytesperline;
 506                 btwrite(reg, ZR36057_VDTR);
 507                 if (reg & 3)
 508                         dprintk(1,
 509                                 KERN_ERR
 510                                 "%s: zr36057_overlay() - video_address not aligned\n",
 511                                 ZR_DEVNAME(zr));
 512                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 513                         reg += zr->buffer.bytesperline;
 514                 btwrite(reg, ZR36057_VDBR);
 515
 516                 /* video stride, status, and frame grab register */
 517                 reg = zr->buffer.bytesperline -
 518                     zr->overlay_settings.width *
 519                     ((zr->overlay_settings.format->depth + 7) / 8);
 520                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 521                         reg += zr->buffer.bytesperline;
 522                 if (reg & 3)
 523                         dprintk(1,
 524                                 KERN_ERR
 525                                 "%s: zr36057_overlay() - video_stride not aligned\n",
 526                                 ZR_DEVNAME(zr));
 527                 reg = (reg << ZR36057_VSSFGR_DispStride);
 528                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 529                 btwrite(reg, ZR36057_VSSFGR);
 530
 531                 /* Set overlay clipping */
 532                 if (zr->overlay_settings.clipcount > 0)
 533                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 534
 535                 /* ... and switch it on */
 536                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 537         } else {
 538                 /* Switch it off */
 539                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 540         }
 541 }
 542
 543 /*
 544  * The overlay mask has one bit for each pixel on a scan line,
 545  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 546  */
 547
 548 void
 549 write_overlay_mask (struct file       *file,
 550                     struct video_clip *vp,
 551                     int                count)
 552 {
 553         struct zoran_fh *fh = file->private_data;
 554         struct zoran *zr = fh->zr;
 555         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 556         u32 *mask;
 557         int x, y, width, height;
 558         unsigned i, j, k;
 559         u32 reg;
 560
 561         /* fill mask with one bits */
 562         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 563         reg = 0;
 564
 565         for (i = 0; i < count; ++i) {
 566                 /* pick up local copy of clip */
 567                 x = vp[i].x;
 568                 y = vp[i].y;
 569                 width = vp[i].width;
 570                 height = vp[i].height;
 571
 572                 /* trim clips that extend beyond the window */
 573                 if (x < 0) {
 574                         width += x;
 575                         x = 0;
 576                 }
 577                 if (y < 0) {
 578                         height += y;
 579                         y = 0;
 580                 }
 581                 if (x + width > fh->overlay_settings.width) {
 582                         width = fh->overlay_settings.width - x;
 583                 }
 584                 if (y + height > fh->overlay_settings.height) {
 585                         height = fh->overlay_settings.height - y;
 586                 }
 587
 588                 /* ignore degenerate clips */
 589                 if (height <= 0) {
 590                         continue;
 591                 }
 592                 if (width <= 0) {
 593                         continue;
 594                 }
 595
 596                 /* apply clip for each scan line */
 597                 for (j = 0; j < height; ++j) {
 598                         /* reset bit for each pixel */
 599                         /* this can be optimized later if need be */
 600                         mask = fh->overlay_mask + (y + j) * mask_line_size;
 601                         for (k = 0; k < width; ++k) {
 602                                 mask[(x + k) / 32] &=
 603                                     ~((u32) 1 << (x + k) % 32);
 604                         }
 605                 }
 606         }
 607 }
 608
 609 /* Enable/Disable uncompressed memory grabbing of the 36057 */
 610
 611 void
 612 zr36057_set_memgrab (struct zoran *zr,
 613                      int           mode)
 614 {
 615         if (mode) {
 616                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 617                  * means a capture is already in progress, but FrameGrab==1
 618                  * doesn't necessary mean that.  It's more correct to say a 1
 619                  * to 0 transition indicates a capture completed.  If a
 620                  * capture is pending when capturing is tuned off, FrameGrab
 621                  * will be stuck at 1 until capturing is turned back on.
 622                  */
 623                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 624                         dprintk(1,
 625                                 KERN_WARNING
 626                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 627                                 ZR_DEVNAME(zr));
 628
 629                 /* switch on VSync interrupts */
 630                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 631                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 632
 633                 /* enable SnapShot */
 634                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 635
 636                 /* Set zr36057 video front end  and enable video */
 637                 zr36057_set_vfe(zr, zr->v4l_settings.width,
 638                                 zr->v4l_settings.height,
 639                                 zr->v4l_settings.format);
 640
 641                 zr->v4l_memgrab_active = 1;
 642         } else {
 643                 /* switch off VSync interrupts */
 644                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 645
 646                 zr->v4l_memgrab_active = 0;
 647                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 648
 649                 /* reenable grabbing to screen if it was running */
 650                 if (zr->v4l_overlay_active) {
 651                         zr36057_overlay(zr, 1);
 652                 } else {
 653                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 654                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 655                 }
 656         }
 657 }
 658
 659 int
 660 wait_grab_pending (struct zoran *zr)
 661 {
 662         unsigned long flags;
 663
 664         /* wait until all pending grabs are finished */
 665
 666         if (!zr->v4l_memgrab_active)
 667                 return 0;
 668
 669         wait_event_interruptible(zr->v4l_capq,
 670                         (zr->v4l_pend_tail == zr->v4l_pend_head));
 671         if (signal_pending(current))
 672                 return -ERESTARTSYS;
 673
 674         spin_lock_irqsave(&zr->spinlock, flags);
 675         zr36057_set_memgrab(zr, 0);
 676         spin_unlock_irqrestore(&zr->spinlock, flags);
 677
 678         return 0;
 679 }
 680
 681 /*****************************************************************************
 682  *                                                                           *
 683  *  Set up the Buz-specific MJPEG part                                       *
 684  *                                                                           *
 685  *****************************************************************************/
 686
 687 static inline void
 688 set_frame (struct zoran *zr,
 689            int           val)
 690 {
 691         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 692 }
 693
 694 static void
 695 set_videobus_dir (struct zoran *zr,
 696                   int           val)
 697 {
 698         switch (zr->card.type) {
 699         case LML33:
 700         case LML33R10:
 701                 if (lml33dpath == 0)
 702                         GPIO(zr, 5, val);
 703                 else
 704                         GPIO(zr, 5, 1);
 705                 break;
 706         default:
 707                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
 708                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
 709                 break;
 710         }
 711 }
 712
 713 static void
 714 init_jpeg_queue (struct zoran *zr)
 715 {
 716         int i;
 717
 718         /* re-initialize DMA ring stuff */
 719         zr->jpg_que_head = 0;
 720         zr->jpg_dma_head = 0;
 721         zr->jpg_dma_tail = 0;
 722         zr->jpg_que_tail = 0;
 723         zr->jpg_seq_num = 0;
 724         zr->JPEG_error = 0;
 725         zr->num_errors = 0;
 726         zr->jpg_err_seq = 0;
 727         zr->jpg_err_shift = 0;
 728         zr->jpg_queued_num = 0;
 729         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 730                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 731         }
 732         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 733                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 734         }
 735 }
 736
 737 static void
 738 zr36057_set_jpg (struct zoran          *zr,
 739                  enum zoran_codec_mode  mode)
 740 {
 741         struct tvnorm *tvn;
 742         u32 reg;
 743
 744         tvn = zr->timing;
 745
 746         /* assert P_Reset, disable code transfer, deassert Active */
 747         btwrite(0, ZR36057_JPC);
 748
 749         /* MJPEG compression mode */
 750         switch (mode) {
 751
 752         case BUZ_MODE_MOTION_COMPRESS:
 753         default:
 754                 reg = ZR36057_JMC_MJPGCmpMode;
 755                 break;
 756
 757         case BUZ_MODE_MOTION_DECOMPRESS:
 758                 reg = ZR36057_JMC_MJPGExpMode;
 759                 reg |= ZR36057_JMC_SyncMstr;
 760                 /* RJ: The following is experimental - improves the output to screen */
 761                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 762                 break;
 763
 764         case BUZ_MODE_STILL_COMPRESS:
 765                 reg = ZR36057_JMC_JPGCmpMode;
 766                 break;
 767
 768         case BUZ_MODE_STILL_DECOMPRESS:
 769                 reg = ZR36057_JMC_JPGExpMode;
 770                 break;
 771
 772         }
 773         reg |= ZR36057_JMC_JPG;
 774         if (zr->jpg_settings.field_per_buff == 1)
 775                 reg |= ZR36057_JMC_Fld_per_buff;
 776         btwrite(reg, ZR36057_JMC);
 777
 778         /* vertical */
 779         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 780         reg = (6 << ZR36057_VSP_VsyncSize) |
 781               (tvn->Ht << ZR36057_VSP_FrmTot);
 782         btwrite(reg, ZR36057_VSP);
 783         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 784               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 785         btwrite(reg, ZR36057_FVAP);
 786
 787         /* horizontal */
 788         if (zr->card.vfe_pol.hsync_pol)
 789                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 790         else
 791                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 792         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 793               (tvn->Wt << ZR36057_HSP_LineTot);
 794         btwrite(reg, ZR36057_HSP);
 795         reg = ((zr->jpg_settings.img_x +
 796                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 797               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 798         btwrite(reg, ZR36057_FHAP);
 799
 800         /* field process parameters */
 801         if (zr->jpg_settings.odd_even)
 802                 reg = ZR36057_FPP_Odd_Even;
 803         else
 804                 reg = 0;
 805
 806         btwrite(reg, ZR36057_FPP);
 807
 808         /* Set proper VCLK Polarity, else colors will be wrong during playback */
 809         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 810
 811         /* code base address */
 812         reg = virt_to_bus(zr->stat_com);
 813         btwrite(reg, ZR36057_JCBA);
 814
 815         /* FIFO threshold (FIFO is 160. double words) */
 816         /* NOTE: decimal values here */
 817         switch (mode) {
 818
 819         case BUZ_MODE_STILL_COMPRESS:
 820         case BUZ_MODE_MOTION_COMPRESS:
 821                 if (zr->card.type != BUZ)
 822                         reg = 140;
 823                 else
 824                         reg = 60;
 825                 break;
 826
 827         case BUZ_MODE_STILL_DECOMPRESS:
 828         case BUZ_MODE_MOTION_DECOMPRESS:
 829                 reg = 20;
 830                 break;
 831
 832         default:
 833                 reg = 80;
 834                 break;
 835
 836         }
 837         btwrite(reg, ZR36057_JCFT);
 838         zr36057_adjust_vfe(zr, mode);
 839
 840 }
 841
 842 void
 843 print_interrupts (struct zoran *zr)
 844 {
 845         int res, noerr = 0;
 846
 847         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 848         if ((res = zr->field_counter) < -1 || res > 1) {
 849                 printk(" FD:%d", res);
 850         }
 851         if ((res = zr->intr_counter_GIRQ1) != 0) {
 852                 printk(" GIRQ1:%d", res);
 853                 noerr++;
 854         }
 855         if ((res = zr->intr_counter_GIRQ0) != 0) {
 856                 printk(" GIRQ0:%d", res);
 857                 noerr++;
 858         }
 859         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 860                 printk(" CodRepIRQ:%d", res);
 861                 noerr++;
 862         }
 863         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 864                 printk(" JPEGRepIRQ:%d", res);
 865                 noerr++;
 866         }
 867         if (zr->JPEG_max_missed) {
 868                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 869                        zr->JPEG_min_missed);
 870         }
 871         if (zr->END_event_missed) {
 872                 printk(" ENDs missed: %d", zr->END_event_missed);
 873         }
 874         //if (zr->jpg_queued_num) {
 875         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 876                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 877         //}
 878         if (!noerr) {
 879                 printk(": no interrupts detected.");
 880         }
 881         printk("\n");
 882 }
 883
 884 void
 885 clear_interrupt_counters (struct zoran *zr)
 886 {
 887         zr->intr_counter_GIRQ1 = 0;
 888         zr->intr_counter_GIRQ0 = 0;
 889         zr->intr_counter_CodRepIRQ = 0;
 890         zr->intr_counter_JPEGRepIRQ = 0;
 891         zr->field_counter = 0;
 892         zr->IRQ1_in = 0;
 893         zr->IRQ1_out = 0;
 894         zr->JPEG_in = 0;
 895         zr->JPEG_out = 0;
 896         zr->JPEG_0 = 0;
 897         zr->JPEG_1 = 0;
 898         zr->END_event_missed = 0;
 899         zr->JPEG_missed = 0;
 900         zr->JPEG_max_missed = 0;
 901         zr->JPEG_min_missed = 0x7fffffff;
 902 }
 903
 904 static u32
 905 count_reset_interrupt (struct zoran *zr)
 906 {
 907         u32 isr;
 908
 909         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 910                 if (isr & ZR36057_ISR_GIRQ1) {
 911                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 912                         zr->intr_counter_GIRQ1++;
 913                 }
 914                 if (isr & ZR36057_ISR_GIRQ0) {
 915                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 916                         zr->intr_counter_GIRQ0++;
 917                 }
 918                 if (isr & ZR36057_ISR_CodRepIRQ) {
 919                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 920                         zr->intr_counter_CodRepIRQ++;
 921                 }
 922                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
 923                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 924                         zr->intr_counter_JPEGRepIRQ++;
 925                 }
 926         }
 927         return isr;
 928 }
 929
 930 /* hack */
 931 extern void zr36016_write (struct videocodec *codec,
 932                            u16                reg,
 933                            u32                val);
 934
 935 void
 936 jpeg_start (struct zoran *zr)
 937 {
 938         int reg;
 939
 940         zr->frame_num = 0;
 941
 942         /* deassert P_reset, disable code transfer, deassert Active */
 943         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 944         /* stop flushing the internal code buffer */
 945         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 946         /* enable code transfer */
 947         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 948
 949         /* clear IRQs */
 950         btwrite(IRQ_MASK, ZR36057_ISR);
 951         /* enable the JPEG IRQs */
 952         btwrite(zr->card.jpeg_int |
 953                         ZR36057_ICR_JPEGRepIRQ |
 954                         ZR36057_ICR_IntPinEn,
 955                 ZR36057_ICR);
 956
 957         set_frame(zr, 0);       // \FRAME
 958
 959         /* set the JPEG codec guest ID */
 960         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 961                (0 << ZR36057_JCGI_JPEGuestReg);
 962         btwrite(reg, ZR36057_JCGI);
 963
 964         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 965             zr->card.video_codec == CODEC_TYPE_ZR36050) {
 966                 /* Enable processing on the ZR36016 */
 967                 if (zr->vfe)
 968                         zr36016_write(zr->vfe, 0, 1);
 969
 970                 /* load the address of the GO register in the ZR36050 latch */
 971                 post_office_write(zr, 0, 0, 0);
 972         }
 973
 974         /* assert Active */
 975         btor(ZR36057_JPC_Active, ZR36057_JPC);
 976
 977         /* enable the Go generation */
 978         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 979         udelay(30);
 980
 981         set_frame(zr, 1);       // /FRAME
 982
 983         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 984 }
 985
 986 void
 987 zr36057_enable_jpg (struct zoran          *zr,
 988                     enum zoran_codec_mode  mode)
 989 {
 990         static int zero = 0;
 991         static int one = 1;
 992         struct vfe_settings cap;
 993         int field_size =
 994             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 995
 996         zr->codec_mode = mode;
 997
 998         cap.x = zr->jpg_settings.img_x;
 999         cap.y = zr->jpg_settings.img_y;
1000         cap.width = zr->jpg_settings.img_width;
1001         cap.height = zr->jpg_settings.img_height;
1002         cap.decimation =
1003             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
1004         cap.quality = zr->jpg_settings.jpg_comp.quality;
1005
1006         switch (mode) {
1007
1008         case BUZ_MODE_MOTION_COMPRESS: {
1009                 struct jpeg_app_marker app;
1010                 struct jpeg_com_marker com;
1011
1012                 /* In motion compress mode, the decoder output must be enabled, and
1013                  * the video bus direction set to input.
1014                  */
1015                 set_videobus_dir(zr, 0);
1016                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1017                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1018
1019                 /* Take the JPEG codec and the VFE out of sleep */
1020                 jpeg_codec_sleep(zr, 0);
1021
1022                 /* set JPEG app/com marker */
1023                 app.appn = zr->jpg_settings.jpg_comp.APPn;
1024                 app.len = zr->jpg_settings.jpg_comp.APP_len;
1025                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1026                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1027                                    sizeof(struct jpeg_app_marker), &app);
1028
1029                 com.len = zr->jpg_settings.jpg_comp.COM_len;
1030                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1031                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1032                                    sizeof(struct jpeg_com_marker), &com);
1033
1034                 /* Setup the JPEG codec */
1035                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1036                                    sizeof(int), &field_size);
1037                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1038                                      &zr->card.vfe_pol);
1039                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1040
1041                 /* Setup the VFE */
1042                 if (zr->vfe) {
1043                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1044                                          sizeof(int), &field_size);
1045                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1046                                            &zr->card.vfe_pol);
1047                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1048                 }
1049
1050                 init_jpeg_queue(zr);
1051                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1052
1053                 clear_interrupt_counters(zr);
1054                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1055                         ZR_DEVNAME(zr));
1056                 break;
1057         }
1058
1059         case BUZ_MODE_MOTION_DECOMPRESS:
1060                 /* In motion decompression mode, the decoder output must be disabled, and
1061                  * the video bus direction set to output.
1062                  */
1063                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1064                 set_videobus_dir(zr, 1);
1065                 encoder_command(zr, ENCODER_SET_INPUT, &one);
1066
1067                 /* Take the JPEG codec and the VFE out of sleep */
1068                 jpeg_codec_sleep(zr, 0);
1069                 /* Setup the VFE */
1070                 if (zr->vfe) {
1071                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1072                                            &zr->card.vfe_pol);
1073                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1074                 }
1075                 /* Setup the JPEG codec */
1076                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1077                                      &zr->card.vfe_pol);
1078                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1079
1080                 init_jpeg_queue(zr);
1081                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1082
1083                 clear_interrupt_counters(zr);
1084                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1085                         ZR_DEVNAME(zr));
1086                 break;
1087
1088         case BUZ_MODE_IDLE:
1089         default:
1090                 /* shut down processing */
1091                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1092                       ZR36057_ICR);
1093                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1094                         ZR36057_ISR);
1095                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1096
1097                 msleep(50);
1098
1099                 set_videobus_dir(zr, 0);
1100                 set_frame(zr, 1);       // /FRAME
1101                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1102                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1103                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1104                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1105                 jpeg_codec_reset(zr);
1106                 jpeg_codec_sleep(zr, 1);
1107                 zr36057_adjust_vfe(zr, mode);
1108
1109                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1110                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1111
1112                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1113                 break;
1114
1115         }
1116 }
1117
1118 /* when this is called the spinlock must be held */
1119 void
1120 zoran_feed_stat_com (struct zoran *zr)
1121 {
1122         /* move frames from pending queue to DMA */
1123
1124         int frame, i, max_stat_com;
1125
1126         max_stat_com =
1127             (zr->jpg_settings.TmpDcm ==
1128              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1129
1130         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1131                zr->jpg_dma_head < zr->jpg_que_head) {
1132
1133                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1134                 if (zr->jpg_settings.TmpDcm == 1) {
1135                         /* fill 1 stat_com entry */
1136                         i = (zr->jpg_dma_head -
1137                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1138                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1139                                 break;
1140                         zr->stat_com[i] =
1141                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1142                 } else {
1143                         /* fill 2 stat_com entries */
1144                         i = ((zr->jpg_dma_head -
1145                               zr->jpg_err_shift) & 1) * 2;
1146                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1147                                 break;
1148                         zr->stat_com[i] =
1149                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1150                         zr->stat_com[i + 1] =
1151                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1152                 }
1153                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1154                 zr->jpg_dma_head++;
1155
1156         }
1157         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1158                 zr->jpg_queued_num++;
1159 }
1160
1161 /* when this is called the spinlock must be held */
1162 static void
1163 zoran_reap_stat_com (struct zoran *zr)
1164 {
1165         /* move frames from DMA queue to done queue */
1166
1167         int i;
1168         u32 stat_com;
1169         unsigned int seq;
1170         unsigned int dif;
1171         struct zoran_jpg_buffer *buffer;
1172         int frame;
1173
1174         /* In motion decompress we don't have a hardware frame counter,
1175          * we just count the interrupts here */
1176
1177         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1178                 zr->jpg_seq_num++;
1179         }
1180         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1181                 if (zr->jpg_settings.TmpDcm == 1)
1182                         i = (zr->jpg_dma_tail -
1183                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1184                 else
1185                         i = ((zr->jpg_dma_tail -
1186                               zr->jpg_err_shift) & 1) * 2 + 1;
1187
1188                 stat_com = le32_to_cpu(zr->stat_com[i]);
1189
1190                 if ((stat_com & 1) == 0) {
1191                         return;
1192                 }
1193                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1194                 buffer = &zr->jpg_buffers.buffer[frame];
1195                 do_gettimeofday(&buffer->bs.timestamp);
1196
1197                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1198                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1199
1200                         /* update sequence number with the help of the counter in stat_com */
1201
1202                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1203                         dif = (seq - zr->jpg_seq_num) & 0xff;
1204                         zr->jpg_seq_num += dif;
1205                 } else {
1206                         buffer->bs.length = 0;
1207                 }
1208                 buffer->bs.seq =
1209                     zr->jpg_settings.TmpDcm ==
1210                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1211                 buffer->state = BUZ_STATE_DONE;
1212
1213                 zr->jpg_dma_tail++;
1214         }
1215 }
1216
1217 static void
1218 error_handler (struct zoran *zr,
1219                u32           astat,
1220                u32           stat)
1221 {
1222         /* This is JPEG error handling part */
1223         if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1224             (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1225                 //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1226                 return;
1227         }
1228
1229         if ((stat & 1) == 0 &&
1230             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1231             zr->jpg_dma_tail - zr->jpg_que_tail >=
1232              zr->jpg_buffers.num_buffers) {
1233                 /* No free buffers... */
1234                 zoran_reap_stat_com(zr);
1235                 zoran_feed_stat_com(zr);
1236                 wake_up_interruptible(&zr->jpg_capq);
1237                 zr->JPEG_missed = 0;
1238                 return;
1239         }
1240
1241         if (zr->JPEG_error != 1) {
1242                 /*
1243                  * First entry: error just happened during normal operation
1244                  *
1245                  * In BUZ_MODE_MOTION_COMPRESS:
1246                  *
1247                  * Possible glitch in TV signal. In this case we should
1248                  * stop the codec and wait for good quality signal before
1249                  * restarting it to avoid further problems
1250                  *
1251                  * In BUZ_MODE_MOTION_DECOMPRESS:
1252                  *
1253                  * Bad JPEG frame: we have to mark it as processed (codec crashed
1254                  * and was not able to do it itself), and to remove it from queue.
1255                  */
1256                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1257                 udelay(1);
1258                 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1259                 btwrite(0, ZR36057_JPC);
1260                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1261                 jpeg_codec_reset(zr);
1262                 jpeg_codec_sleep(zr, 1);
1263                 zr->JPEG_error = 1;
1264                 zr->num_errors++;
1265
1266                 /* Report error */
1267                 if (zr36067_debug > 1 && zr->num_errors <= 8) {
1268                         long frame;
1269                         frame =
1270                             zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1271                         printk(KERN_ERR
1272                                "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1273                                ZR_DEVNAME(zr), stat, zr->last_isr,
1274                                zr->jpg_que_tail, zr->jpg_dma_tail,
1275                                zr->jpg_dma_head, zr->jpg_que_head,
1276                                zr->jpg_seq_num, frame);
1277                         printk("stat_com frames:");
1278                         {
1279                                 int i, j;
1280                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1281                                         for (i = 0;
1282                                              i < zr->jpg_buffers.num_buffers;
1283                                              i++) {
1284                                                 if (le32_to_cpu(zr->stat_com[j]) ==
1285                                                     zr->jpg_buffers.
1286                                                     buffer[i].
1287                                                     frag_tab_bus) {
1288                                                         printk("% d->%d",
1289                                                                j, i);
1290                                                 }
1291                                         }
1292                                 }
1293                                 printk("\n");
1294                         }
1295                 }
1296                 /* Find an entry in stat_com and rotate contents */
1297                 {
1298                         int i;
1299
1300                         if (zr->jpg_settings.TmpDcm == 1)
1301                                 i = (zr->jpg_dma_tail -
1302                                      zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1303                         else
1304                                 i = ((zr->jpg_dma_tail -
1305                                       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 -
1318                                              zr->jpg_err_shift) &
1319                                             BUZ_MASK_STAT_COM;
1320                                 else
1321                                         i = ((zr->jpg_dma_tail -
1322                                               zr->jpg_err_shift) & 1) * 2;
1323                         }
1324                         if (i) {
1325                                 /* Rotate stat_comm entries to make current entry first */
1326                                 int j;
1327                                 u32 bus_addr[BUZ_NUM_STAT_COM];
1328
1329                                 /* Here we are copying the stat_com array, which
1330                                  * is already in little endian format, so
1331                                  * no endian conversions here
1332                                  */
1333                                 memcpy(bus_addr, zr->stat_com,
1334                                        sizeof(bus_addr));
1335                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1336                                         zr->stat_com[j] =
1337                                             bus_addr[(i + j) &
1338                                                      BUZ_MASK_STAT_COM];
1339
1340                                 }
1341                                 zr->jpg_err_shift += i;
1342                                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1343                         }
1344                         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1345                                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1346                 }
1347         }
1348
1349         /* Now the stat_comm buffer is ready for restart */
1350         do {
1351                 int status, mode;
1352
1353                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1354                         decoder_command(zr, DECODER_GET_STATUS, &status);
1355                         mode = CODEC_DO_COMPRESSION;
1356                 } else {
1357                         status = 0;
1358                         mode = CODEC_DO_EXPANSION;
1359                 }
1360                 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1361                     (status & DECODER_STATUS_GOOD)) {
1362                         /********** RESTART code *************/
1363                         jpeg_codec_reset(zr);
1364                         zr->codec->set_mode(zr->codec, mode);
1365                         zr36057_set_jpg(zr, zr->codec_mode);
1366                         jpeg_start(zr);
1367
1368                         if (zr->num_errors <= 8)
1369                                 dprintk(2, KERN_INFO "%s: Restart\n",
1370                                         ZR_DEVNAME(zr));
1371
1372                         zr->JPEG_missed = 0;
1373                         zr->JPEG_error = 2;
1374                         /********** End RESTART code ***********/
1375                 }
1376         } while (0);
1377 }
1378
1379 irqreturn_t
1380 zoran_irq (int             irq,
1381            void           *dev_id)
1382 {
1383         u32 stat, astat;
1384         int count;
1385         struct zoran *zr;
1386         unsigned long flags;
1387
1388         zr = dev_id;
1389         count = 0;
1390
1391         if (zr->testing) {
1392                 /* Testing interrupts */
1393                 spin_lock_irqsave(&zr->spinlock, flags);
1394                 while ((stat = count_reset_interrupt(zr))) {
1395                         if (count++ > 100) {
1396                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1397                                 dprintk(1,
1398                                         KERN_ERR
1399                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1400                                         ZR_DEVNAME(zr), stat);
1401                                 wake_up_interruptible(&zr->test_q);
1402                         }
1403                 }
1404                 zr->last_isr = stat;
1405                 spin_unlock_irqrestore(&zr->spinlock, flags);
1406                 return IRQ_HANDLED;
1407         }
1408
1409         spin_lock_irqsave(&zr->spinlock, flags);
1410         while (1) {
1411                 /* get/clear interrupt status bits */
1412                 stat = count_reset_interrupt(zr);
1413                 astat = stat & IRQ_MASK;
1414                 if (!astat) {
1415                         break;
1416                 }
1417                 dprintk(4,
1418                         KERN_DEBUG
1419                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1420                         astat, btread(ZR36057_ICR));
1421                 if (astat & zr->card.vsync_int) {       // SW
1422
1423                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1424                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1425                                 /* count missed interrupts */
1426                                 zr->JPEG_missed++;
1427                         }
1428                         //post_office_read(zr,1,0);
1429                         /* Interrupts may still happen when
1430                          * zr->v4l_memgrab_active is switched off.
1431                          * We simply ignore them */
1432
1433                         if (zr->v4l_memgrab_active) {
1434
1435                                 /* A lot more checks should be here ... */
1436                                 if ((btread(ZR36057_VSSFGR) &
1437                                      ZR36057_VSSFGR_SnapShot) == 0)
1438                                         dprintk(1,
1439                                                 KERN_WARNING
1440                                                 "%s: BuzIRQ with SnapShot off ???\n",
1441                                                 ZR_DEVNAME(zr));
1442
1443                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1444                                         /* There is a grab on a frame going on, check if it has finished */
1445
1446                                         if ((btread(ZR36057_VSSFGR) &
1447                                              ZR36057_VSSFGR_FrameGrab) ==
1448                                             0) {
1449                                                 /* it is finished, notify the user */
1450
1451                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1452                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1453                                                 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1454                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1455                                                 zr->v4l_pend_tail++;
1456                                         }
1457                                 }
1458
1459                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1460                                         wake_up_interruptible(&zr->v4l_capq);
1461
1462                                 /* Check if there is another grab queued */
1463
1464                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1465                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1466
1467                                         int frame = zr->v4l_pend[zr->v4l_pend_tail &
1468                                                          V4L_MASK_FRAME];
1469                                         u32 reg;
1470
1471                                         zr->v4l_grab_frame = frame;
1472
1473                                         /* Set zr36057 video front end and enable video */
1474
1475                                         /* Buffer address */
1476
1477                                         reg =
1478                                             zr->v4l_buffers.buffer[frame].
1479                                             fbuffer_bus;
1480                                         btwrite(reg, ZR36057_VDTR);
1481                                         if (zr->v4l_settings.height >
1482                                             BUZ_MAX_HEIGHT / 2)
1483                                                 reg +=
1484                                                     zr->v4l_settings.
1485                                                     bytesperline;
1486                                         btwrite(reg, ZR36057_VDBR);
1487
1488                                         /* video stride, status, and frame grab register */
1489                                         reg = 0;
1490                                         if (zr->v4l_settings.height >
1491                                             BUZ_MAX_HEIGHT / 2)
1492                                                 reg +=
1493                                                     zr->v4l_settings.
1494                                                     bytesperline;
1495                                         reg =
1496                                             (reg <<
1497                                              ZR36057_VSSFGR_DispStride);
1498                                         reg |= ZR36057_VSSFGR_VidOvf;
1499                                         reg |= ZR36057_VSSFGR_SnapShot;
1500                                         reg |= ZR36057_VSSFGR_FrameGrab;
1501                                         btwrite(reg, ZR36057_VSSFGR);
1502
1503                                         btor(ZR36057_VDCR_VidEn,
1504                                              ZR36057_VDCR);
1505                                 }
1506                         }
1507
1508                         /* even if we don't grab, we do want to increment
1509                          * the sequence counter to see lost frames */
1510                         zr->v4l_grab_seq++;
1511                 }
1512 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1513                 if (astat & ZR36057_ISR_CodRepIRQ) {
1514                         zr->intr_counter_CodRepIRQ++;
1515                         IDEBUG(printk
1516                                (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1517                                 ZR_DEVNAME(zr)));
1518                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1519                 }
1520 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1521
1522 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1523                 if (astat & ZR36057_ISR_JPEGRepIRQ) {
1524
1525                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1526                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1527                                 if (zr36067_debug > 1 &&
1528                                     (!zr->frame_num || zr->JPEG_error)) {
1529                                         printk(KERN_INFO
1530                                                "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1531                                                ZR_DEVNAME(zr), stat,
1532                                                zr->jpg_settings.odd_even,
1533                                                zr->jpg_settings.
1534                                                field_per_buff,
1535                                                zr->JPEG_missed);
1536                                         {
1537                                                 char sc[] = "0000";
1538                                                 char sv[5];
1539                                                 int i;
1540                                                 strcpy(sv, sc);
1541                                                 for (i = 0; i < 4; i++) {
1542                                                         if (le32_to_cpu(zr->stat_com[i]) & 1)
1543                                                                 sv[i] = '1';
1544                                                 }
1545                                                 sv[4] = 0;
1546                                                 printk(KERN_INFO
1547                                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1548                                                        ZR_DEVNAME(zr), sv,
1549                                                        zr->jpg_que_tail,
1550                                                        zr->jpg_dma_tail,
1551                                                        zr->jpg_dma_head,
1552                                                        zr->jpg_que_head);
1553                                         }
1554                                 } else {
1555                                         if (zr->JPEG_missed > zr->JPEG_max_missed)      // Get statistics
1556                                                 zr->JPEG_max_missed =
1557                                                     zr->JPEG_missed;
1558                                         if (zr->JPEG_missed <
1559                                             zr->JPEG_min_missed)
1560                                                 zr->JPEG_min_missed =
1561                                                     zr->JPEG_missed;
1562                                 }
1563
1564                                 if (zr36067_debug > 2 && zr->frame_num < 6) {
1565                                         int i;
1566                                         printk("%s: seq=%ld stat_com:",
1567                                                ZR_DEVNAME(zr), zr->jpg_seq_num);
1568                                         for (i = 0; i < 4; i++) {
1569                                                 printk(" %08x",
1570                                                        le32_to_cpu(zr->stat_com[i]));
1571                                         }
1572                                         printk("\n");
1573                                 }
1574                                 zr->frame_num++;
1575                                 zr->JPEG_missed = 0;
1576                                 zr->JPEG_error = 0;
1577                                 zoran_reap_stat_com(zr);
1578                                 zoran_feed_stat_com(zr);
1579                                 wake_up_interruptible(&zr->jpg_capq);
1580                         } /*else {
1581                               dprintk(1,
1582                                         KERN_ERR
1583                                         "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1584                                         ZR_DEVNAME(zr));
1585                         }*/
1586                 }
1587 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1588
1589                 /* DATERR, too many fields missed, error processing */
1590                 if ((astat & zr->card.jpeg_int) ||
1591                     zr->JPEG_missed > 25 ||
1592                     zr->JPEG_error == 1 ||
1593                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1594                      (zr->frame_num & (zr->JPEG_missed >
1595                                        zr->jpg_settings.field_per_buff)))) {
1596                         error_handler(zr, astat, stat);
1597                 }
1598
1599                 count++;
1600                 if (count > 10) {
1601                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1602                                 ZR_DEVNAME(zr), count);
1603                         if (count > 20) {
1604                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1605                                 dprintk(2,
1606                                         KERN_ERR
1607                                         "%s: IRQ lockup, cleared int mask\n",
1608                                         ZR_DEVNAME(zr));
1609                                 break;
1610                         }
1611                 }
1612                 zr->last_isr = stat;
1613         }
1614         spin_unlock_irqrestore(&zr->spinlock, flags);
1615
1616         return IRQ_HANDLED;
1617 }
1618
1619 void
1620 zoran_set_pci_master (struct zoran *zr,
1621                       int           set_master)
1622 {
1623         if (set_master) {
1624                 pci_set_master(zr->pci_dev);
1625         } else {
1626                 u16 command;
1627
1628                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1629                 command &= ~PCI_COMMAND_MASTER;
1630                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1631         }
1632 }
1633
1634 void
1635 zoran_init_hardware (struct zoran *zr)
1636 {
1637         int j, zero = 0;
1638
1639         /* Enable bus-mastering */
1640         zoran_set_pci_master(zr, 1);
1641
1642         /* Initialize the board */
1643         if (zr->card.init) {
1644                 zr->card.init(zr);
1645         }
1646
1647         j = zr->card.input[zr->input].muxsel;
1648
1649         decoder_command(zr, 0, NULL);
1650         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1651         decoder_command(zr, DECODER_SET_INPUT, &j);
1652
1653         encoder_command(zr, 0, NULL);
1654         encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1655         encoder_command(zr, ENCODER_SET_INPUT, &zero);
1656
1657         /* toggle JPEG codec sleep to sync PLL */
1658         jpeg_codec_sleep(zr, 1);
1659         jpeg_codec_sleep(zr, 0);
1660
1661         /* set individual interrupt enables (without GIRQ1)
1662          * but don't global enable until zoran_open() */
1663
1664         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1665         // It looks like using only JPEGRepIRQEn is not always reliable,
1666         // may be when JPEG codec crashes it won't generate IRQ? So,
1667          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1668             zr36057_init_vfe(zr);
1669
1670         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1671
1672         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1673 }
1674
1675 void
1676 zr36057_restart (struct zoran *zr)
1677 {
1678         btwrite(0, ZR36057_SPGPPCR);
1679         mdelay(1);
1680         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1681         mdelay(1);
1682
1683         /* assert P_Reset */
1684         btwrite(0, ZR36057_JPC);
1685         /* set up GPIO direction - all output */
1686         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1687
1688         /* set up GPIO pins and guest bus timing */
1689         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1690 }
1691
1692 /*
1693  * initialize video front end
1694  */
1695
1696 static void
1697 zr36057_init_vfe (struct zoran *zr)
1698 {
1699         u32 reg;
1700
1701         reg = btread(ZR36057_VFESPFR);
1702         reg |= ZR36057_VFESPFR_LittleEndian;
1703         reg &= ~ZR36057_VFESPFR_VCLKPol;
1704         reg |= ZR36057_VFESPFR_ExtFl;
1705         reg |= ZR36057_VFESPFR_TopField;
1706         btwrite(reg, ZR36057_VFESPFR);
1707         reg = btread(ZR36057_VDCR);
1708         if (pci_pci_problems & PCIPCI_TRITON)
1709                 // || zr->revision < 1) // Revision 1 has also Triton support
1710                 reg &= ~ZR36057_VDCR_Triton;
1711         else
1712                 reg |= ZR36057_VDCR_Triton;
1713         btwrite(reg, ZR36057_VDCR);
1714 }
1715
1716 /*
1717  * Interface to decoder and encoder chips using i2c bus
1718  */
1719
1720 int
1721 decoder_command (struct zoran *zr,
1722                  int           cmd,
1723                  void         *data)
1724 {
1725         if (zr->decoder == NULL)
1726                 return -EIO;
1727
1728         if (zr->card.type == LML33 &&
1729             (cmd == DECODER_SET_NORM || DECODER_SET_INPUT)) {
1730                 int res;
1731
1732                 // Bt819 needs to reset its FIFO buffer using #FRST pin and
1733                 // LML33 card uses GPIO(7) for that.
1734                 GPIO(zr, 7, 0);
1735                 res = zr->decoder->driver->command(zr->decoder, cmd, data);
1736                 // Pull #FRST high.
1737                 GPIO(zr, 7, 1);
1738                 return res;
1739         } else
1740                 return zr->decoder->driver->command(zr->decoder, cmd,
1741                                                     data);
1742 }
1743
1744 int
1745 encoder_command (struct zoran *zr,
1746                  int           cmd,
1747                  void         *data)
1748 {
1749         if (zr->encoder == NULL)
1750                 return -1;
1751
1752         return zr->encoder->driver->command(zr->encoder, cmd, data);
1753 }