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
  56 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
  57                    ZR36057_ISR_GIRQ1 | \
  58                    ZR36057_ISR_JPEGRepIRQ )
  59
  60 extern const struct zoran_format zoran_formats[];
  61
  62 extern int *zr_debug;
  63
  64 #define dprintk(num, format, args...) \
  65         do { \
  66                 if (*zr_debug >= num) \
  67                         printk(format, ##args); \
  68         } while (0)
  69
  70 static int lml33dpath = 0;      /* 1 will use digital path in capture
  71                                  * mode instead of analog. It can be
  72                                  * used for picture adjustments using
  73                                  * tool like xawtv while watching image
  74                                  * on TV monitor connected to the output.
  75                                  * However, due to absence of 75 Ohm
  76                                  * load on Bt819 input, there will be
  77                                  * some image imperfections */
  78
  79 module_param(lml33dpath, bool, 0);
  80 MODULE_PARM_DESC(lml33dpath,
  81                  "Use digital path capture mode (on LML33 cards)");
  82
  83 static void
  84 zr36057_init_vfe (struct zoran *zr);
  85
  86 /*
  87  * General Purpose I/O and Guest bus access
  88  */
  89
  90 /*
  91  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  92  * GPIO bit number in the card_info structure is set to 0.
  93  */
  94
  95 void
  96 GPIO (struct zoran *zr,
  97       int           bit,
  98       unsigned int  value)
  99 {
 100         u32 reg;
 101         u32 mask;
 102
 103         /* Make sure the bit number is legal
 104          * A bit number of -1 (lacking) gives a mask of 0,
 105          * making it harmless */
 106         mask = (1 << (24 + bit)) & 0xff000000;
 107         reg = btread(ZR36057_GPPGCR1) & ~mask;
 108         if (value) {
 109                 reg |= mask;
 110         }
 111         btwrite(reg, ZR36057_GPPGCR1);
 112         udelay(1);
 113 }
 114
 115 /*
 116  * Wait til post office is no longer busy
 117  */
 118
 119 int
 120 post_office_wait (struct zoran *zr)
 121 {
 122         u32 por;
 123
 124 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 125         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 126                 /* wait for something to happen */
 127         }
 128         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 129                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 130                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 131                         por);
 132                 return -1;
 133         }
 134
 135         return 0;
 136 }
 137
 138 int
 139 post_office_write (struct zoran *zr,
 140                    unsigned int  guest,
 141                    unsigned int  reg,
 142                    unsigned int  value)
 143 {
 144         u32 por;
 145
 146         por =
 147             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 148             ((reg & 7) << 16) | (value & 0xFF);
 149         btwrite(por, ZR36057_POR);
 150
 151         return post_office_wait(zr);
 152 }
 153
 154 int
 155 post_office_read (struct zoran *zr,
 156                   unsigned int  guest,
 157                   unsigned int  reg)
 158 {
 159         u32 por;
 160
 161         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 162         btwrite(por, ZR36057_POR);
 163         if (post_office_wait(zr) < 0) {
 164                 return -1;
 165         }
 166
 167         return btread(ZR36057_POR) & 0xFF;
 168 }
 169
 170 /*
 171  * detect guests
 172  */
 173
 174 static void
 175 dump_guests (struct zoran *zr)
 176 {
 177         if (*zr_debug > 2) {
 178                 int i, guest[8];
 179
 180                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 181                         guest[i] = post_office_read(zr, i, 0);
 182                 }
 183
 184                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 185
 186                 for (i = 1; i < 8; i++) {
 187                         printk(" 0x%02x", guest[i]);
 188                 }
 189                 printk("\n");
 190         }
 191 }
 192
 193 static inline unsigned long
 194 get_time (void)
 195 {
 196         struct timeval tv;
 197
 198         do_gettimeofday(&tv);
 199         return (1000000 * tv.tv_sec + tv.tv_usec);
 200 }
 201
 202 void
 203 detect_guest_activity (struct zoran *zr)
 204 {
 205         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 206         unsigned long t0, t1;
 207
 208         dump_guests(zr);
 209         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 210                ZR_DEVNAME(zr));
 211         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 212                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
 213         }
 214
 215         timeout = 0;
 216         j = 0;
 217         t0 = get_time();
 218         while (timeout < 10000) {
 219                 udelay(10);
 220                 timeout++;
 221                 for (i = 1; (i < 8) && (j < 8); i++) {
 222                         res = post_office_read(zr, i, 0);
 223                         if (res != guest[i]) {
 224                                 t1 = get_time();
 225                                 change[j][0] = (t1 - t0);
 226                                 t0 = t1;
 227                                 change[j][1] = i;
 228                                 change[j][2] = res;
 229                                 j++;
 230                                 guest[i] = res;
 231                         }
 232                 }
 233                 if (j >= 8)
 234                         break;
 235         }
 236         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 237
 238         for (i = 1; i < 8; i++) {
 239                 printk(" 0x%02x", guest0[i]);
 240         }
 241         printk("\n");
 242         if (j == 0) {
 243                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 244                 return;
 245         }
 246         for (i = 0; i < j; i++) {
 247                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 248                        change[i][0], change[i][1], change[i][2]);
 249         }
 250 }
 251
 252 /*
 253  * JPEG Codec access
 254  */
 255
 256 void
 257 jpeg_codec_sleep (struct zoran *zr,
 258                   int           sleep)
 259 {
 260         GPIO(zr, zr->card.gpio[GPIO_JPEG_SLEEP], !sleep);
 261         if (!sleep) {
 262                 dprintk(3,
 263                         KERN_DEBUG
 264                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 265                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 266                 udelay(500);
 267         } else {
 268                 dprintk(3,
 269                         KERN_DEBUG
 270                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 271                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 272                 udelay(2);
 273         }
 274 }
 275
 276 int
 277 jpeg_codec_reset (struct zoran *zr)
 278 {
 279         /* Take the codec out of sleep */
 280         jpeg_codec_sleep(zr, 0);
 281
 282         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 283                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 284                                   0);
 285                 udelay(2);
 286         } else {
 287                 GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 0);
 288                 udelay(2);
 289                 GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 1);
 290                 udelay(2);
 291         }
 292
 293         return 0;
 294 }
 295
 296 /*
 297  *   Set the registers for the size we have specified. Don't bother
 298  *   trying to understand this without the ZR36057 manual in front of
 299  *   you [AC].
 300  *
 301  *   PS: The manual is free for download in .pdf format from
 302  *   www.zoran.com - nicely done those folks.
 303  */
 304
 305 static void
 306 zr36057_adjust_vfe (struct zoran          *zr,
 307                     enum zoran_codec_mode  mode)
 308 {
 309         u32 reg;
 310
 311         switch (mode) {
 312         case BUZ_MODE_MOTION_DECOMPRESS:
 313                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 314                 reg = btread(ZR36057_VFEHCR);
 315                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 316                         reg += ((1 << 10) | 1);
 317                 }
 318                 btwrite(reg, ZR36057_VFEHCR);
 319                 break;
 320         case BUZ_MODE_MOTION_COMPRESS:
 321         case BUZ_MODE_IDLE:
 322         default:
 323                 if (zr->norm == VIDEO_MODE_NTSC ||
 324                     (zr->card.type == LML33R10 &&
 325                      zr->norm == VIDEO_MODE_PAL))
 326                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 327                 else
 328                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 329                 reg = btread(ZR36057_VFEHCR);
 330                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 331                         reg -= ((1 << 10) | 1);
 332                 }
 333                 btwrite(reg, ZR36057_VFEHCR);
 334                 break;
 335         }
 336 }
 337
 338 /*
 339  * set geometry
 340  */
 341
 342 static void
 343 zr36057_set_vfe (struct zoran              *zr,
 344                  int                        video_width,
 345                  int                        video_height,
 346                  const struct zoran_format *format)
 347 {
 348         struct tvnorm *tvn;
 349         unsigned HStart, HEnd, VStart, VEnd;
 350         unsigned DispMode;
 351         unsigned VidWinWid, VidWinHt;
 352         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 353         unsigned Wa, We, Ha, He;
 354         unsigned X, Y, HorDcm, VerDcm;
 355         u32 reg;
 356         unsigned mask_line_size;
 357
 358         tvn = zr->timing;
 359
 360         Wa = tvn->Wa;
 361         Ha = tvn->Ha;
 362
 363         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 364                 ZR_DEVNAME(zr), video_width, video_height);
 365
 366         if (zr->norm != VIDEO_MODE_PAL &&
 367             zr->norm != VIDEO_MODE_NTSC &&
 368             zr->norm != VIDEO_MODE_SECAM) {
 369                 dprintk(1,
 370                         KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
 371                         ZR_DEVNAME(zr), zr->norm);
 372                 return;
 373         }
 374         if (video_width < BUZ_MIN_WIDTH ||
 375             video_height < BUZ_MIN_HEIGHT ||
 376             video_width > Wa || video_height > Ha) {
 377                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 378                         ZR_DEVNAME(zr), video_width, video_height);
 379                 return;
 380         }
 381
 382         /**** zr36057 ****/
 383
 384         /* horizontal */
 385         VidWinWid = video_width;
 386         X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
 387         We = (VidWinWid * 64) / X;
 388         HorDcm = 64 - X;
 389         hcrop1 = 2 * ((tvn->Wa - We) / 4);
 390         hcrop2 = tvn->Wa - We - hcrop1;
 391         HStart = tvn->HStart ? tvn->HStart : 1;
 392         /* (Ronald) Original comment:
 393          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 394          * this is false. It inverses chroma values on the LML33R10 (so Cr
 395          * suddenly is shown as Cb and reverse, really cool effect if you
 396          * want to see blue faces, not useful otherwise). So don't use |1.
 397          * However, the DC10 has '0' as HStart, but does need |1, so we
 398          * use a dirty check...
 399          */
 400         HEnd = HStart + tvn->Wa - 1;
 401         HStart += hcrop1;
 402         HEnd -= hcrop2;
 403         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 404             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 405         if (zr->card.vfe_pol.hsync_pol)
 406                 reg |= ZR36057_VFEHCR_HSPol;
 407         btwrite(reg, ZR36057_VFEHCR);
 408
 409         /* Vertical */
 410         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 411         VidWinHt = DispMode ? video_height : video_height / 2;
 412         Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
 413         He = (VidWinHt * 64) / Y;
 414         VerDcm = 64 - Y;
 415         vcrop1 = (tvn->Ha / 2 - He) / 2;
 416         vcrop2 = tvn->Ha / 2 - He - vcrop1;
 417         VStart = tvn->VStart;
 418         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 419         VStart += vcrop1;
 420         VEnd -= vcrop2;
 421         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 422             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 423         if (zr->card.vfe_pol.vsync_pol)
 424                 reg |= ZR36057_VFEVCR_VSPol;
 425         btwrite(reg, ZR36057_VFEVCR);
 426
 427         /* scaler and pixel format */
 428         reg = 0;
 429         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 430         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 431         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 432         if (format->palette != VIDEO_PALETTE_YUV422)
 433                 reg |= ZR36057_VFESPFR_LittleEndian;
 434         /* RJ: I don't know, why the following has to be the opposite
 435          * of the corresponding ZR36060 setting, but only this way
 436          * we get the correct colors when uncompressing to the screen  */
 437         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 438         /* RJ: Don't know if that is needed for NTSC also */
 439         if (zr->norm != VIDEO_MODE_NTSC)
 440                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 441         reg |= ZR36057_VFESPFR_TopField;
 442         switch (format->palette) {
 443
 444         case VIDEO_PALETTE_YUV422:
 445                 reg |= ZR36057_VFESPFR_YUV422;
 446                 break;
 447
 448         case VIDEO_PALETTE_RGB555:
 449                 reg |= ZR36057_VFESPFR_RGB555 | ZR36057_VFESPFR_ErrDif;
 450                 break;
 451
 452         case VIDEO_PALETTE_RGB565:
 453                 reg |= ZR36057_VFESPFR_RGB565 | ZR36057_VFESPFR_ErrDif;
 454                 break;
 455
 456         case VIDEO_PALETTE_RGB24:
 457                 reg |= ZR36057_VFESPFR_RGB888 | ZR36057_VFESPFR_Pack24;
 458                 break;
 459
 460         case VIDEO_PALETTE_RGB32:
 461                 reg |= ZR36057_VFESPFR_RGB888;
 462                 break;
 463
 464         default:
 465                 dprintk(1,
 466                         KERN_INFO "%s: set_vfe() - unknown color_fmt=%x\n",
 467                         ZR_DEVNAME(zr), format->palette);
 468                 return;
 469
 470         }
 471         if (HorDcm >= 48) {
 472                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 473         } else if (HorDcm >= 32) {
 474                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 475         } else if (HorDcm >= 16) {
 476                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 477         }
 478         btwrite(reg, ZR36057_VFESPFR);
 479
 480         /* display configuration */
 481         reg = (16 << ZR36057_VDCR_MinPix)
 482             | (VidWinHt << ZR36057_VDCR_VidWinHt)
 483             | (VidWinWid << ZR36057_VDCR_VidWinWid);
 484         if (pci_pci_problems & PCIPCI_TRITON)
 485                 // || zr->revision < 1) // Revision 1 has also Triton support
 486                 reg &= ~ZR36057_VDCR_Triton;
 487         else
 488                 reg |= ZR36057_VDCR_Triton;
 489         btwrite(reg, ZR36057_VDCR);
 490
 491         /* (Ronald) don't write this if overlay_mask = NULL */
 492         if (zr->overlay_mask) {
 493                 /* Write overlay clipping mask data, but don't enable overlay clipping */
 494                 /* RJ: since this makes only sense on the screen, we use
 495                  * zr->overlay_settings.width instead of video_width */
 496
 497                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 498                 reg = virt_to_bus(zr->overlay_mask);
 499                 btwrite(reg, ZR36057_MMTR);
 500                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 501                 btwrite(reg, ZR36057_MMBR);
 502                 reg =
 503                     mask_line_size - (zr->overlay_settings.width +
 504                                       31) / 32;
 505                 if (DispMode == 0)
 506                         reg += mask_line_size;
 507                 reg <<= ZR36057_OCR_MaskStride;
 508                 btwrite(reg, ZR36057_OCR);
 509         }
 510
 511         zr36057_adjust_vfe(zr, zr->codec_mode);
 512 }
 513
 514 /*
 515  * Switch overlay on or off
 516  */
 517
 518 void
 519 zr36057_overlay (struct zoran *zr,
 520                  int           on)
 521 {
 522         u32 reg;
 523
 524         if (on) {
 525                 /* do the necessary settings ... */
 526                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 527
 528                 zr36057_set_vfe(zr,
 529                                 zr->overlay_settings.width,
 530                                 zr->overlay_settings.height,
 531                                 zr->overlay_settings.format);
 532
 533                 /* Start and length of each line MUST be 4-byte aligned.
 534                  * This should be allready checked before the call to this routine.
 535                  * All error messages are internal driver checking only! */
 536
 537                 /* video display top and bottom registers */
 538                 reg = (long) zr->buffer.base +
 539                     zr->overlay_settings.x *
 540                     ((zr->overlay_settings.format->depth + 7) / 8) +
 541                     zr->overlay_settings.y *
 542                     zr->buffer.bytesperline;
 543                 btwrite(reg, ZR36057_VDTR);
 544                 if (reg & 3)
 545                         dprintk(1,
 546                                 KERN_ERR
 547                                 "%s: zr36057_overlay() - video_address not aligned\n",
 548                                 ZR_DEVNAME(zr));
 549                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 550                         reg += zr->buffer.bytesperline;
 551                 btwrite(reg, ZR36057_VDBR);
 552
 553                 /* video stride, status, and frame grab register */
 554                 reg = zr->buffer.bytesperline -
 555                     zr->overlay_settings.width *
 556                     ((zr->overlay_settings.format->depth + 7) / 8);
 557                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 558                         reg += zr->buffer.bytesperline;
 559                 if (reg & 3)
 560                         dprintk(1,
 561                                 KERN_ERR
 562                                 "%s: zr36057_overlay() - video_stride not aligned\n",
 563                                 ZR_DEVNAME(zr));
 564                 reg = (reg << ZR36057_VSSFGR_DispStride);
 565                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 566                 btwrite(reg, ZR36057_VSSFGR);
 567
 568                 /* Set overlay clipping */
 569                 if (zr->overlay_settings.clipcount > 0)
 570                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 571
 572                 /* ... and switch it on */
 573                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 574         } else {
 575                 /* Switch it off */
 576                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 577         }
 578 }
 579
 580 /*
 581  * The overlay mask has one bit for each pixel on a scan line,
 582  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 583  */
 584
 585 void
 586 write_overlay_mask (struct file       *file,
 587                     struct video_clip *vp,
 588                     int                count)
 589 {
 590         struct zoran_fh *fh = file->private_data;
 591         struct zoran *zr = fh->zr;
 592         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 593         u32 *mask;
 594         int x, y, width, height;
 595         unsigned i, j, k;
 596         u32 reg;
 597
 598         /* fill mask with one bits */
 599         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 600         reg = 0;
 601
 602         for (i = 0; i < count; ++i) {
 603                 /* pick up local copy of clip */
 604                 x = vp[i].x;
 605                 y = vp[i].y;
 606                 width = vp[i].width;
 607                 height = vp[i].height;
 608
 609                 /* trim clips that extend beyond the window */
 610                 if (x < 0) {
 611                         width += x;
 612                         x = 0;
 613                 }
 614                 if (y < 0) {
 615                         height += y;
 616                         y = 0;
 617                 }
 618                 if (x + width > fh->overlay_settings.width) {
 619                         width = fh->overlay_settings.width - x;
 620                 }
 621                 if (y + height > fh->overlay_settings.height) {
 622                         height = fh->overlay_settings.height - y;
 623                 }
 624
 625                 /* ignore degenerate clips */
 626                 if (height <= 0) {
 627                         continue;
 628                 }
 629                 if (width <= 0) {
 630                         continue;
 631                 }
 632
 633                 /* apply clip for each scan line */
 634                 for (j = 0; j < height; ++j) {
 635                         /* reset bit for each pixel */
 636                         /* this can be optimized later if need be */
 637                         mask = fh->overlay_mask + (y + j) * mask_line_size;
 638                         for (k = 0; k < width; ++k) {
 639                                 mask[(x + k) / 32] &=
 640                                     ~((u32) 1 << (x + k) % 32);
 641                         }
 642                 }
 643         }
 644 }
 645
 646 /* Enable/Disable uncompressed memory grabbing of the 36057 */
 647
 648 void
 649 zr36057_set_memgrab (struct zoran *zr,
 650                      int           mode)
 651 {
 652         if (mode) {
 653                 if (btread(ZR36057_VSSFGR) &
 654                     (ZR36057_VSSFGR_SnapShot | ZR36057_VSSFGR_FrameGrab))
 655                         dprintk(1,
 656                                 KERN_WARNING
 657                                 "%s: zr36057_set_memgrab(1) with SnapShot or FrameGrab on!?\n",
 658                                 ZR_DEVNAME(zr));
 659
 660                 /* switch on VSync interrupts */
 661                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 662                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 663
 664                 /* enable SnapShot */
 665                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 666
 667                 /* Set zr36057 video front end  and enable video */
 668                 zr36057_set_vfe(zr, zr->v4l_settings.width,
 669                                 zr->v4l_settings.height,
 670                                 zr->v4l_settings.format);
 671
 672                 zr->v4l_memgrab_active = 1;
 673         } else {
 674                 zr->v4l_memgrab_active = 0;
 675
 676                 /* switch off VSync interrupts */
 677                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 678
 679                 /* reenable grabbing to screen if it was running */
 680                 if (zr->v4l_overlay_active) {
 681                         zr36057_overlay(zr, 1);
 682                 } else {
 683                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 684                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 685                 }
 686         }
 687 }
 688
 689 int
 690 wait_grab_pending (struct zoran *zr)
 691 {
 692         unsigned long flags;
 693
 694         /* wait until all pending grabs are finished */
 695
 696         if (!zr->v4l_memgrab_active)
 697                 return 0;
 698
 699         wait_event_interruptible(zr->v4l_capq,
 700                         (zr->v4l_pend_tail == zr->v4l_pend_head));
 701         if (signal_pending(current))
 702                 return -ERESTARTSYS;
 703
 704         spin_lock_irqsave(&zr->spinlock, flags);
 705         zr36057_set_memgrab(zr, 0);
 706         spin_unlock_irqrestore(&zr->spinlock, flags);
 707
 708         return 0;
 709 }
 710
 711 /*****************************************************************************
 712  *                                                                           *
 713  *  Set up the Buz-specific MJPEG part                                       *
 714  *                                                                           *
 715  *****************************************************************************/
 716
 717 static inline void
 718 set_frame (struct zoran *zr,
 719            int           val)
 720 {
 721         GPIO(zr, zr->card.gpio[GPIO_JPEG_FRAME], val);
 722 }
 723
 724 static void
 725 set_videobus_dir (struct zoran *zr,
 726                   int           val)
 727 {
 728         switch (zr->card.type) {
 729         case LML33:
 730         case LML33R10:
 731                 if (lml33dpath == 0)
 732                         GPIO(zr, 5, val);
 733                 else
 734                         GPIO(zr, 5, 1);
 735                 break;
 736         default:
 737                 GPIO(zr, zr->card.gpio[GPIO_VID_DIR],
 738                      zr->card.gpio_pol[GPIO_VID_DIR] ? !val : val);
 739                 break;
 740         }
 741 }
 742
 743 static void
 744 init_jpeg_queue (struct zoran *zr)
 745 {
 746         int i;
 747
 748         /* re-initialize DMA ring stuff */
 749         zr->jpg_que_head = 0;
 750         zr->jpg_dma_head = 0;
 751         zr->jpg_dma_tail = 0;
 752         zr->jpg_que_tail = 0;
 753         zr->jpg_seq_num = 0;
 754         zr->JPEG_error = 0;
 755         zr->num_errors = 0;
 756         zr->jpg_err_seq = 0;
 757         zr->jpg_err_shift = 0;
 758         zr->jpg_queued_num = 0;
 759         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 760                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 761         }
 762         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 763                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 764         }
 765 }
 766
 767 static void
 768 zr36057_set_jpg (struct zoran          *zr,
 769                  enum zoran_codec_mode  mode)
 770 {
 771         struct tvnorm *tvn;
 772         u32 reg;
 773
 774         tvn = zr->timing;
 775
 776         /* assert P_Reset, disable code transfer, deassert Active */
 777         btwrite(0, ZR36057_JPC);
 778
 779         /* MJPEG compression mode */
 780         switch (mode) {
 781
 782         case BUZ_MODE_MOTION_COMPRESS:
 783         default:
 784                 reg = ZR36057_JMC_MJPGCmpMode;
 785                 break;
 786
 787         case BUZ_MODE_MOTION_DECOMPRESS:
 788                 reg = ZR36057_JMC_MJPGExpMode;
 789                 reg |= ZR36057_JMC_SyncMstr;
 790                 /* RJ: The following is experimental - improves the output to screen */
 791                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 792                 break;
 793
 794         case BUZ_MODE_STILL_COMPRESS:
 795                 reg = ZR36057_JMC_JPGCmpMode;
 796                 break;
 797
 798         case BUZ_MODE_STILL_DECOMPRESS:
 799                 reg = ZR36057_JMC_JPGExpMode;
 800                 break;
 801
 802         }
 803         reg |= ZR36057_JMC_JPG;
 804         if (zr->jpg_settings.field_per_buff == 1)
 805                 reg |= ZR36057_JMC_Fld_per_buff;
 806         btwrite(reg, ZR36057_JMC);
 807
 808         /* vertical */
 809         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 810         reg = (6 << ZR36057_VSP_VsyncSize) |
 811               (tvn->Ht << ZR36057_VSP_FrmTot);
 812         btwrite(reg, ZR36057_VSP);
 813         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 814               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 815         btwrite(reg, ZR36057_FVAP);
 816
 817         /* horizontal */
 818         if (zr->card.vfe_pol.hsync_pol)
 819                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 820         else
 821                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 822         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 823               (tvn->Wt << ZR36057_HSP_LineTot);
 824         btwrite(reg, ZR36057_HSP);
 825         reg = ((zr->jpg_settings.img_x +
 826                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 827               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 828         btwrite(reg, ZR36057_FHAP);
 829
 830         /* field process parameters */
 831         if (zr->jpg_settings.odd_even)
 832                 reg = ZR36057_FPP_Odd_Even;
 833         else
 834                 reg = 0;
 835
 836         btwrite(reg, ZR36057_FPP);
 837
 838         /* Set proper VCLK Polarity, else colors will be wrong during playback */
 839         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 840
 841         /* code base address */
 842         reg = virt_to_bus(zr->stat_com);
 843         btwrite(reg, ZR36057_JCBA);
 844
 845         /* FIFO threshold (FIFO is 160. double words) */
 846         /* NOTE: decimal values here */
 847         switch (mode) {
 848
 849         case BUZ_MODE_STILL_COMPRESS:
 850         case BUZ_MODE_MOTION_COMPRESS:
 851                 if (zr->card.type != BUZ)
 852                         reg = 140;
 853                 else
 854                         reg = 60;
 855                 break;
 856
 857         case BUZ_MODE_STILL_DECOMPRESS:
 858         case BUZ_MODE_MOTION_DECOMPRESS:
 859                 reg = 20;
 860                 break;
 861
 862         default:
 863                 reg = 80;
 864                 break;
 865
 866         }
 867         btwrite(reg, ZR36057_JCFT);
 868         zr36057_adjust_vfe(zr, mode);
 869
 870 }
 871
 872 void
 873 print_interrupts (struct zoran *zr)
 874 {
 875         int res, noerr = 0;
 876
 877         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 878         if ((res = zr->field_counter) < -1 || res > 1) {
 879                 printk(" FD:%d", res);
 880         }
 881         if ((res = zr->intr_counter_GIRQ1) != 0) {
 882                 printk(" GIRQ1:%d", res);
 883                 noerr++;
 884         }
 885         if ((res = zr->intr_counter_GIRQ0) != 0) {
 886                 printk(" GIRQ0:%d", res);
 887                 noerr++;
 888         }
 889         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 890                 printk(" CodRepIRQ:%d", res);
 891                 noerr++;
 892         }
 893         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 894                 printk(" JPEGRepIRQ:%d", res);
 895                 noerr++;
 896         }
 897         if (zr->JPEG_max_missed) {
 898                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 899                        zr->JPEG_min_missed);
 900         }
 901         if (zr->END_event_missed) {
 902                 printk(" ENDs missed: %d", zr->END_event_missed);
 903         }
 904         //if (zr->jpg_queued_num) {
 905         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 906                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 907         //}
 908         if (!noerr) {
 909                 printk(": no interrupts detected.");
 910         }
 911         printk("\n");
 912 }
 913
 914 void
 915 clear_interrupt_counters (struct zoran *zr)
 916 {
 917         zr->intr_counter_GIRQ1 = 0;
 918         zr->intr_counter_GIRQ0 = 0;
 919         zr->intr_counter_CodRepIRQ = 0;
 920         zr->intr_counter_JPEGRepIRQ = 0;
 921         zr->field_counter = 0;
 922         zr->IRQ1_in = 0;
 923         zr->IRQ1_out = 0;
 924         zr->JPEG_in = 0;
 925         zr->JPEG_out = 0;
 926         zr->JPEG_0 = 0;
 927         zr->JPEG_1 = 0;
 928         zr->END_event_missed = 0;
 929         zr->JPEG_missed = 0;
 930         zr->JPEG_max_missed = 0;
 931         zr->JPEG_min_missed = 0x7fffffff;
 932 }
 933
 934 static u32
 935 count_reset_interrupt (struct zoran *zr)
 936 {
 937         u32 isr;
 938
 939         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 940                 if (isr & ZR36057_ISR_GIRQ1) {
 941                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 942                         zr->intr_counter_GIRQ1++;
 943                 }
 944                 if (isr & ZR36057_ISR_GIRQ0) {
 945                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 946                         zr->intr_counter_GIRQ0++;
 947                 }
 948                 if (isr & ZR36057_ISR_CodRepIRQ) {
 949                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 950                         zr->intr_counter_CodRepIRQ++;
 951                 }
 952                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
 953                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 954                         zr->intr_counter_JPEGRepIRQ++;
 955                 }
 956         }
 957         return isr;
 958 }
 959
 960 /* hack */
 961 extern void zr36016_write (struct videocodec *codec,
 962                            u16                reg,
 963                            u32                val);
 964
 965 void
 966 jpeg_start (struct zoran *zr)
 967 {
 968         int reg;
 969
 970         zr->frame_num = 0;
 971
 972         /* deassert P_reset, disable code transfer, deassert Active */
 973         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 974         /* stop flushing the internal code buffer */
 975         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 976         /* enable code transfer */
 977         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 978
 979         /* clear IRQs */
 980         btwrite(IRQ_MASK, ZR36057_ISR);
 981         /* enable the JPEG IRQs */
 982         btwrite(zr->card.jpeg_int |
 983                         ZR36057_ICR_JPEGRepIRQ |
 984                         ZR36057_ICR_IntPinEn,
 985                 ZR36057_ICR);
 986
 987         set_frame(zr, 0);       // \FRAME
 988
 989         /* set the JPEG codec guest ID */
 990         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 991                (0 << ZR36057_JCGI_JPEGuestReg);
 992         btwrite(reg, ZR36057_JCGI);
 993
 994         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 995             zr->card.video_codec == CODEC_TYPE_ZR36050) {
 996                 /* Enable processing on the ZR36016 */
 997                 if (zr->vfe)
 998                         zr36016_write(zr->vfe, 0, 1);
 999
1000                 /* load the address of the GO register in the ZR36050 latch */
1001                 post_office_write(zr, 0, 0, 0);
1002         }
1003
1004         /* assert Active */
1005         btor(ZR36057_JPC_Active, ZR36057_JPC);
1006
1007         /* enable the Go generation */
1008         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
1009         udelay(30);
1010
1011         set_frame(zr, 1);       // /FRAME
1012
1013         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
1014 }
1015
1016 void
1017 zr36057_enable_jpg (struct zoran          *zr,
1018                     enum zoran_codec_mode  mode)
1019 {
1020         static int zero = 0;
1021         static int one = 1;
1022         struct vfe_settings cap;
1023         int field_size =
1024             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
1025
1026         zr->codec_mode = mode;
1027
1028         cap.x = zr->jpg_settings.img_x;
1029         cap.y = zr->jpg_settings.img_y;
1030         cap.width = zr->jpg_settings.img_width;
1031         cap.height = zr->jpg_settings.img_height;
1032         cap.decimation =
1033             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
1034         cap.quality = zr->jpg_settings.jpg_comp.quality;
1035
1036         switch (mode) {
1037
1038         case BUZ_MODE_MOTION_COMPRESS: {
1039                 struct jpeg_app_marker app;
1040                 struct jpeg_com_marker com;
1041
1042                 /* In motion compress mode, the decoder output must be enabled, and
1043                  * the video bus direction set to input.
1044                  */
1045                 set_videobus_dir(zr, 0);
1046                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1047                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1048
1049                 /* Take the JPEG codec and the VFE out of sleep */
1050                 jpeg_codec_sleep(zr, 0);
1051
1052                 /* set JPEG app/com marker */
1053                 app.appn = zr->jpg_settings.jpg_comp.APPn;
1054                 app.len = zr->jpg_settings.jpg_comp.APP_len;
1055                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1056                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1057                                    sizeof(struct jpeg_app_marker), &app);
1058
1059                 com.len = zr->jpg_settings.jpg_comp.COM_len;
1060                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1061                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1062                                    sizeof(struct jpeg_com_marker), &com);
1063
1064                 /* Setup the JPEG codec */
1065                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1066                                    sizeof(int), &field_size);
1067                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1068                                      &zr->card.vfe_pol);
1069                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1070
1071                 /* Setup the VFE */
1072                 if (zr->vfe) {
1073                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1074                                          sizeof(int), &field_size);
1075                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1076                                            &zr->card.vfe_pol);
1077                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1078                 }
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_COMPRESS)\n",
1085                         ZR_DEVNAME(zr));
1086                 break;
1087         }
1088
1089         case BUZ_MODE_MOTION_DECOMPRESS:
1090                 /* In motion decompression mode, the decoder output must be disabled, and
1091                  * the video bus direction set to output.
1092                  */
1093                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1094                 set_videobus_dir(zr, 1);
1095                 encoder_command(zr, ENCODER_SET_INPUT, &one);
1096
1097                 /* Take the JPEG codec and the VFE out of sleep */
1098                 jpeg_codec_sleep(zr, 0);
1099                 /* Setup the VFE */
1100                 if (zr->vfe) {
1101                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1102                                            &zr->card.vfe_pol);
1103                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1104                 }
1105                 /* Setup the JPEG codec */
1106                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1107                                      &zr->card.vfe_pol);
1108                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1109
1110                 init_jpeg_queue(zr);
1111                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1112
1113                 clear_interrupt_counters(zr);
1114                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1115                         ZR_DEVNAME(zr));
1116                 break;
1117
1118         case BUZ_MODE_IDLE:
1119         default:
1120                 /* shut down processing */
1121                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1122                       ZR36057_ICR);
1123                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1124                         ZR36057_ISR);
1125                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1126
1127                 msleep(50);
1128
1129                 set_videobus_dir(zr, 0);
1130                 set_frame(zr, 1);       // /FRAME
1131                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1132                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1133                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1134                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1135                 jpeg_codec_reset(zr);
1136                 jpeg_codec_sleep(zr, 1);
1137                 zr36057_adjust_vfe(zr, mode);
1138
1139                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1140                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1141
1142                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1143                 break;
1144
1145         }
1146 }
1147
1148 /* when this is called the spinlock must be held */
1149 void
1150 zoran_feed_stat_com (struct zoran *zr)
1151 {
1152         /* move frames from pending queue to DMA */
1153
1154         int frame, i, max_stat_com;
1155
1156         max_stat_com =
1157             (zr->jpg_settings.TmpDcm ==
1158              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1159
1160         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1161                zr->jpg_dma_head < zr->jpg_que_head) {
1162
1163                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1164                 if (zr->jpg_settings.TmpDcm == 1) {
1165                         /* fill 1 stat_com entry */
1166                         i = (zr->jpg_dma_head -
1167                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1168                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1169                                 break;
1170                         zr->stat_com[i] =
1171                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1172                 } else {
1173                         /* fill 2 stat_com entries */
1174                         i = ((zr->jpg_dma_head -
1175                               zr->jpg_err_shift) & 1) * 2;
1176                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1177                                 break;
1178                         zr->stat_com[i] =
1179                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1180                         zr->stat_com[i + 1] =
1181                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1182                 }
1183                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1184                 zr->jpg_dma_head++;
1185
1186         }
1187         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1188                 zr->jpg_queued_num++;
1189 }
1190
1191 /* when this is called the spinlock must be held */
1192 static void
1193 zoran_reap_stat_com (struct zoran *zr)
1194 {
1195         /* move frames from DMA queue to done queue */
1196
1197         int i;
1198         u32 stat_com;
1199         unsigned int seq;
1200         unsigned int dif;
1201         struct zoran_jpg_buffer *buffer;
1202         int frame;
1203
1204         /* In motion decompress we don't have a hardware frame counter,
1205          * we just count the interrupts here */
1206
1207         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1208                 zr->jpg_seq_num++;
1209         }
1210         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1211                 if (zr->jpg_settings.TmpDcm == 1)
1212                         i = (zr->jpg_dma_tail -
1213                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1214                 else
1215                         i = ((zr->jpg_dma_tail -
1216                               zr->jpg_err_shift) & 1) * 2 + 1;
1217
1218                 stat_com = le32_to_cpu(zr->stat_com[i]);
1219
1220                 if ((stat_com & 1) == 0) {
1221                         return;
1222                 }
1223                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1224                 buffer = &zr->jpg_buffers.buffer[frame];
1225                 do_gettimeofday(&buffer->bs.timestamp);
1226
1227                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1228                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1229
1230                         /* update sequence number with the help of the counter in stat_com */
1231
1232                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1233                         dif = (seq - zr->jpg_seq_num) & 0xff;
1234                         zr->jpg_seq_num += dif;
1235                 } else {
1236                         buffer->bs.length = 0;
1237                 }
1238                 buffer->bs.seq =
1239                     zr->jpg_settings.TmpDcm ==
1240                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1241                 buffer->state = BUZ_STATE_DONE;
1242
1243                 zr->jpg_dma_tail++;
1244         }
1245 }
1246
1247 static void
1248 error_handler (struct zoran *zr,
1249                u32           astat,
1250                u32           stat)
1251 {
1252         /* This is JPEG error handling part */
1253         if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1254             (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1255                 //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1256                 return;
1257         }
1258
1259         if ((stat & 1) == 0 &&
1260             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1261             zr->jpg_dma_tail - zr->jpg_que_tail >=
1262              zr->jpg_buffers.num_buffers) {
1263                 /* No free buffers... */
1264                 zoran_reap_stat_com(zr);
1265                 zoran_feed_stat_com(zr);
1266                 wake_up_interruptible(&zr->jpg_capq);
1267                 zr->JPEG_missed = 0;
1268                 return;
1269         }
1270
1271         if (zr->JPEG_error != 1) {
1272                 /*
1273                  * First entry: error just happened during normal operation
1274                  *
1275                  * In BUZ_MODE_MOTION_COMPRESS:
1276                  *
1277                  * Possible glitch in TV signal. In this case we should
1278                  * stop the codec and wait for good quality signal before
1279                  * restarting it to avoid further problems
1280                  *
1281                  * In BUZ_MODE_MOTION_DECOMPRESS:
1282                  *
1283                  * Bad JPEG frame: we have to mark it as processed (codec crashed
1284                  * and was not able to do it itself), and to remove it from queue.
1285                  */
1286                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1287                 udelay(1);
1288                 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1289                 btwrite(0, ZR36057_JPC);
1290                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1291                 jpeg_codec_reset(zr);
1292                 jpeg_codec_sleep(zr, 1);
1293                 zr->JPEG_error = 1;
1294                 zr->num_errors++;
1295
1296                 /* Report error */
1297                 if (*zr_debug > 1 && zr->num_errors <= 8) {
1298                         long frame;
1299                         frame =
1300                             zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1301                         printk(KERN_ERR
1302                                "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1303                                ZR_DEVNAME(zr), stat, zr->last_isr,
1304                                zr->jpg_que_tail, zr->jpg_dma_tail,
1305                                zr->jpg_dma_head, zr->jpg_que_head,
1306                                zr->jpg_seq_num, frame);
1307                         printk("stat_com frames:");
1308                         {
1309                                 int i, j;
1310                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1311                                         for (i = 0;
1312                                              i < zr->jpg_buffers.num_buffers;
1313                                              i++) {
1314                                                 if (le32_to_cpu(zr->stat_com[j]) ==
1315                                                     zr->jpg_buffers.
1316                                                     buffer[i].
1317                                                     frag_tab_bus) {
1318                                                         printk("% d->%d",
1319                                                                j, i);
1320                                                 }
1321                                         }
1322                                 }
1323                                 printk("\n");
1324                         }
1325                 }
1326                 /* Find an entry in stat_com and rotate contents */
1327                 {
1328                         int i;
1329
1330                         if (zr->jpg_settings.TmpDcm == 1)
1331                                 i = (zr->jpg_dma_tail -
1332                                      zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1333                         else
1334                                 i = ((zr->jpg_dma_tail -
1335                                       zr->jpg_err_shift) & 1) * 2;
1336                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1337                                 /* Mimic zr36067 operation */
1338                                 zr->stat_com[i] |= cpu_to_le32(1);
1339                                 if (zr->jpg_settings.TmpDcm != 1)
1340                                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1341                                 /* Refill */
1342                                 zoran_reap_stat_com(zr);
1343                                 zoran_feed_stat_com(zr);
1344                                 wake_up_interruptible(&zr->jpg_capq);
1345                                 /* Find an entry in stat_com again after refill */
1346                                 if (zr->jpg_settings.TmpDcm == 1)
1347                                         i = (zr->jpg_dma_tail -
1348                                              zr->jpg_err_shift) &
1349                                             BUZ_MASK_STAT_COM;
1350                                 else
1351                                         i = ((zr->jpg_dma_tail -
1352                                               zr->jpg_err_shift) & 1) * 2;
1353                         }
1354                         if (i) {
1355                                 /* Rotate stat_comm entries to make current entry first */
1356                                 int j;
1357                                 u32 bus_addr[BUZ_NUM_STAT_COM];
1358
1359                                 /* Here we are copying the stat_com array, which
1360                                  * is already in little endian format, so
1361                                  * no endian conversions here
1362                                  */
1363                                 memcpy(bus_addr, zr->stat_com,
1364                                        sizeof(bus_addr));
1365                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1366                                         zr->stat_com[j] =
1367                                             bus_addr[(i + j) &
1368                                                      BUZ_MASK_STAT_COM];
1369
1370                                 }
1371                                 zr->jpg_err_shift += i;
1372                                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1373                         }
1374                         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1375                                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1376                 }
1377         }
1378
1379         /* Now the stat_comm buffer is ready for restart */
1380         do {
1381                 int status, mode;
1382
1383                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1384                         decoder_command(zr, DECODER_GET_STATUS, &status);
1385                         mode = CODEC_DO_COMPRESSION;
1386                 } else {
1387                         status = 0;
1388                         mode = CODEC_DO_EXPANSION;
1389                 }
1390                 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1391                     (status & DECODER_STATUS_GOOD)) {
1392                         /********** RESTART code *************/
1393                         jpeg_codec_reset(zr);
1394                         zr->codec->set_mode(zr->codec, mode);
1395                         zr36057_set_jpg(zr, zr->codec_mode);
1396                         jpeg_start(zr);
1397
1398                         if (zr->num_errors <= 8)
1399                                 dprintk(2, KERN_INFO "%s: Restart\n",
1400                                         ZR_DEVNAME(zr));
1401
1402                         zr->JPEG_missed = 0;
1403                         zr->JPEG_error = 2;
1404                         /********** End RESTART code ***********/
1405                 }
1406         } while (0);
1407 }
1408
1409 irqreturn_t
1410 zoran_irq (int             irq,
1411            void           *dev_id,
1412            struct pt_regs *regs)
1413 {
1414         u32 stat, astat;
1415         int count;
1416         struct zoran *zr;
1417         unsigned long flags;
1418
1419         zr = (struct zoran *) dev_id;
1420         count = 0;
1421
1422         if (zr->testing) {
1423                 /* Testing interrupts */
1424                 spin_lock_irqsave(&zr->spinlock, flags);
1425                 while ((stat = count_reset_interrupt(zr))) {
1426                         if (count++ > 100) {
1427                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1428                                 dprintk(1,
1429                                         KERN_ERR
1430                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1431                                         ZR_DEVNAME(zr), stat);
1432                                 wake_up_interruptible(&zr->test_q);
1433                         }
1434                 }
1435                 zr->last_isr = stat;
1436                 spin_unlock_irqrestore(&zr->spinlock, flags);
1437                 return IRQ_HANDLED;
1438         }
1439
1440         spin_lock_irqsave(&zr->spinlock, flags);
1441         while (1) {
1442                 /* get/clear interrupt status bits */
1443                 stat = count_reset_interrupt(zr);
1444                 astat = stat & IRQ_MASK;
1445                 if (!astat) {
1446                         break;
1447                 }
1448                 dprintk(4,
1449                         KERN_DEBUG
1450                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1451                         astat, btread(ZR36057_ICR));
1452                 if (astat & zr->card.vsync_int) {       // SW
1453
1454                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1455                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1456                                 /* count missed interrupts */
1457                                 zr->JPEG_missed++;
1458                         }
1459                         //post_office_read(zr,1,0);
1460                         /* Interrupts may still happen when
1461                          * zr->v4l_memgrab_active is switched off.
1462                          * We simply ignore them */
1463
1464                         if (zr->v4l_memgrab_active) {
1465
1466                                 /* A lot more checks should be here ... */
1467                                 if ((btread(ZR36057_VSSFGR) &
1468                                      ZR36057_VSSFGR_SnapShot) == 0)
1469                                         dprintk(1,
1470                                                 KERN_WARNING
1471                                                 "%s: BuzIRQ with SnapShot off ???\n",
1472                                                 ZR_DEVNAME(zr));
1473
1474                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1475                                         /* There is a grab on a frame going on, check if it has finished */
1476
1477                                         if ((btread(ZR36057_VSSFGR) &
1478                                              ZR36057_VSSFGR_FrameGrab) ==
1479                                             0) {
1480                                                 /* it is finished, notify the user */
1481
1482                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1483                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1484                                                 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1485                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1486                                                 zr->v4l_pend_tail++;
1487                                         }
1488                                 }
1489
1490                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1491                                         wake_up_interruptible(&zr->v4l_capq);
1492
1493                                 /* Check if there is another grab queued */
1494
1495                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1496                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1497
1498                                         int frame = zr->v4l_pend[zr->v4l_pend_tail &
1499                                                          V4L_MASK_FRAME];
1500                                         u32 reg;
1501
1502                                         zr->v4l_grab_frame = frame;
1503
1504                                         /* Set zr36057 video front end and enable video */
1505
1506                                         /* Buffer address */
1507
1508                                         reg =
1509                                             zr->v4l_buffers.buffer[frame].
1510                                             fbuffer_bus;
1511                                         btwrite(reg, ZR36057_VDTR);
1512                                         if (zr->v4l_settings.height >
1513                                             BUZ_MAX_HEIGHT / 2)
1514                                                 reg +=
1515                                                     zr->v4l_settings.
1516                                                     bytesperline;
1517                                         btwrite(reg, ZR36057_VDBR);
1518
1519                                         /* video stride, status, and frame grab register */
1520                                         reg = 0;
1521                                         if (zr->v4l_settings.height >
1522                                             BUZ_MAX_HEIGHT / 2)
1523                                                 reg +=
1524                                                     zr->v4l_settings.
1525                                                     bytesperline;
1526                                         reg =
1527                                             (reg <<
1528                                              ZR36057_VSSFGR_DispStride);
1529                                         reg |= ZR36057_VSSFGR_VidOvf;
1530                                         reg |= ZR36057_VSSFGR_SnapShot;
1531                                         reg |= ZR36057_VSSFGR_FrameGrab;
1532                                         btwrite(reg, ZR36057_VSSFGR);
1533
1534                                         btor(ZR36057_VDCR_VidEn,
1535                                              ZR36057_VDCR);
1536                                 }
1537                         }
1538
1539                         /* even if we don't grab, we do want to increment
1540                          * the sequence counter to see lost frames */
1541                         zr->v4l_grab_seq++;
1542                 }
1543 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1544                 if (astat & ZR36057_ISR_CodRepIRQ) {
1545                         zr->intr_counter_CodRepIRQ++;
1546                         IDEBUG(printk
1547                                (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1548                                 ZR_DEVNAME(zr)));
1549                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1550                 }
1551 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1552
1553 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1554                 if (astat & ZR36057_ISR_JPEGRepIRQ) {
1555
1556                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1557                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1558                                 if (*zr_debug > 1 &&
1559                                     (!zr->frame_num || zr->JPEG_error)) {
1560                                         printk(KERN_INFO
1561                                                "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1562                                                ZR_DEVNAME(zr), stat,
1563                                                zr->jpg_settings.odd_even,
1564                                                zr->jpg_settings.
1565                                                field_per_buff,
1566                                                zr->JPEG_missed);
1567                                         {
1568                                                 char sc[] = "0000";
1569                                                 char sv[5];
1570                                                 int i;
1571                                                 strcpy(sv, sc);
1572                                                 for (i = 0; i < 4; i++) {
1573                                                         if (le32_to_cpu(zr->stat_com[i]) & 1)
1574                                                                 sv[i] = '1';
1575                                                 }
1576                                                 sv[4] = 0;
1577                                                 printk(KERN_INFO
1578                                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1579                                                        ZR_DEVNAME(zr), sv,
1580                                                        zr->jpg_que_tail,
1581                                                        zr->jpg_dma_tail,
1582                                                        zr->jpg_dma_head,
1583                                                        zr->jpg_que_head);
1584                                         }
1585                                 } else {
1586                                         if (zr->JPEG_missed > zr->JPEG_max_missed)      // Get statistics
1587                                                 zr->JPEG_max_missed =
1588                                                     zr->JPEG_missed;
1589                                         if (zr->JPEG_missed <
1590                                             zr->JPEG_min_missed)
1591                                                 zr->JPEG_min_missed =
1592                                                     zr->JPEG_missed;
1593                                 }
1594
1595                                 if (*zr_debug > 2 && zr->frame_num < 6) {
1596                                         int i;
1597                                         printk("%s: seq=%ld stat_com:",
1598                                                ZR_DEVNAME(zr), zr->jpg_seq_num);
1599                                         for (i = 0; i < 4; i++) {
1600                                                 printk(" %08x",
1601                                                        le32_to_cpu(zr->stat_com[i]));
1602                                         }
1603                                         printk("\n");
1604                                 }
1605                                 zr->frame_num++;
1606                                 zr->JPEG_missed = 0;
1607                                 zr->JPEG_error = 0;
1608                                 zoran_reap_stat_com(zr);
1609                                 zoran_feed_stat_com(zr);
1610                                 wake_up_interruptible(&zr->jpg_capq);
1611                         } /*else {
1612                               dprintk(1,
1613                                         KERN_ERR
1614                                         "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1615                                         ZR_DEVNAME(zr));
1616                         }*/
1617                 }
1618 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1619
1620                 /* DATERR, too many fields missed, error processing */
1621                 if ((astat & zr->card.jpeg_int) ||
1622                     zr->JPEG_missed > 25 ||
1623                     zr->JPEG_error == 1 ||
1624                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1625                      (zr->frame_num & (zr->JPEG_missed >
1626                                        zr->jpg_settings.field_per_buff)))) {
1627                         error_handler(zr, astat, stat);
1628                 }
1629
1630                 count++;
1631                 if (count > 10) {
1632                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1633                                 ZR_DEVNAME(zr), count);
1634                         if (count > 20) {
1635                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1636                                 dprintk(2,
1637                                         KERN_ERR
1638                                         "%s: IRQ lockup, cleared int mask\n",
1639                                         ZR_DEVNAME(zr));
1640                                 break;
1641                         }
1642                 }
1643                 zr->last_isr = stat;
1644         }
1645         spin_unlock_irqrestore(&zr->spinlock, flags);
1646
1647         return IRQ_HANDLED;
1648 }
1649
1650 void
1651 zoran_set_pci_master (struct zoran *zr,
1652                       int           set_master)
1653 {
1654         if (set_master) {
1655                 pci_set_master(zr->pci_dev);
1656         } else {
1657                 u16 command;
1658
1659                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1660                 command &= ~PCI_COMMAND_MASTER;
1661                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1662         }
1663 }
1664
1665 void
1666 zoran_init_hardware (struct zoran *zr)
1667 {
1668         int j, zero = 0;
1669
1670         /* Enable bus-mastering */
1671         zoran_set_pci_master(zr, 1);
1672
1673         /* Initialize the board */
1674         if (zr->card.init) {
1675                 zr->card.init(zr);
1676         }
1677
1678         j = zr->card.input[zr->input].muxsel;
1679
1680         decoder_command(zr, 0, NULL);
1681         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1682         decoder_command(zr, DECODER_SET_INPUT, &j);
1683
1684         encoder_command(zr, 0, NULL);
1685         encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1686         encoder_command(zr, ENCODER_SET_INPUT, &zero);
1687
1688         /* toggle JPEG codec sleep to sync PLL */
1689         jpeg_codec_sleep(zr, 1);
1690         jpeg_codec_sleep(zr, 0);
1691
1692         /* set individual interrupt enables (without GIRQ1)
1693          * but don't global enable until zoran_open() */
1694
1695         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1696         // It looks like using only JPEGRepIRQEn is not always reliable,
1697         // may be when JPEG codec crashes it won't generate IRQ? So,
1698          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1699             zr36057_init_vfe(zr);
1700
1701         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1702
1703         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1704 }
1705
1706 void
1707 zr36057_restart (struct zoran *zr)
1708 {
1709         btwrite(0, ZR36057_SPGPPCR);
1710         mdelay(1);
1711         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1712         mdelay(1);
1713
1714         /* assert P_Reset */
1715         btwrite(0, ZR36057_JPC);
1716         /* set up GPIO direction - all output */
1717         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1718
1719         /* set up GPIO pins and guest bus timing */
1720         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1721 }
1722
1723 /*
1724  * initialize video front end
1725  */
1726
1727 static void
1728 zr36057_init_vfe (struct zoran *zr)
1729 {
1730         u32 reg;
1731
1732         reg = btread(ZR36057_VFESPFR);
1733         reg |= ZR36057_VFESPFR_LittleEndian;
1734         reg &= ~ZR36057_VFESPFR_VCLKPol;
1735         reg |= ZR36057_VFESPFR_ExtFl;
1736         reg |= ZR36057_VFESPFR_TopField;
1737         btwrite(reg, ZR36057_VFESPFR);
1738         reg = btread(ZR36057_VDCR);
1739         if (pci_pci_problems & PCIPCI_TRITON)
1740                 // || zr->revision < 1) // Revision 1 has also Triton support
1741                 reg &= ~ZR36057_VDCR_Triton;
1742         else
1743                 reg |= ZR36057_VDCR_Triton;
1744         btwrite(reg, ZR36057_VDCR);
1745 }
1746
1747 /*
1748  * Interface to decoder and encoder chips using i2c bus
1749  */
1750
1751 int
1752 decoder_command (struct zoran *zr,
1753                  int           cmd,
1754                  void         *data)
1755 {
1756         if (zr->decoder == NULL)
1757                 return -EIO;
1758
1759         if (zr->card.type == LML33 &&
1760             (cmd == DECODER_SET_NORM || DECODER_SET_INPUT)) {
1761                 int res;
1762
1763                 // Bt819 needs to reset its FIFO buffer using #FRST pin and
1764                 // LML33 card uses GPIO(7) for that.
1765                 GPIO(zr, 7, 0);
1766                 res = zr->decoder->driver->command(zr->decoder, cmd, data);
1767                 // Pull #FRST high.
1768                 GPIO(zr, 7, 1);
1769                 return res;
1770         } else
1771                 return zr->decoder->driver->command(zr->decoder, cmd,
1772                                                     data);
1773 }
1774
1775 int
1776 encoder_command (struct zoran *zr,
1777                  int           cmd,
1778                  void         *data)
1779 {
1780         if (zr->encoder == NULL)
1781                 return -1;
1782
1783         return zr->encoder->driver->command(zr->encoder, cmd, data);
1784 }