git.oblomov.eu Git - linux-2.6/blob - 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;          /* default = 0
  64                                  * 1 will use digital path in capture
  65                                  * mode instead of analog. It can be
  66                                  * used for picture adjustments using
  67                                  * tool like xawtv while watching image
  68                                  * on TV monitor connected to the output.
  69                                  * However, due to absence of 75 Ohm
  70                                  * load on Bt819 input, there will be
  71                                  * some image imperfections */
  72
  73 module_param(lml33dpath, bool, 0644);
  74 MODULE_PARM_DESC(lml33dpath,
  75                  "Use digital path capture mode (on LML33 cards)");
  76
  77 static void
  78 zr36057_init_vfe (struct zoran *zr);
  79
  80 /*
  81  * General Purpose I/O and Guest bus access
  82  */
  83
  84 /*
  85  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  86  * GPIO bit number in the card_info structure is set to 0.
  87  */
  88
  89 void
  90 GPIO (struct zoran *zr,
  91       int           bit,
  92       unsigned int  value)
  93 {
  94         u32 reg;
  95         u32 mask;
  96
  97         /* Make sure the bit number is legal
  98          * A bit number of -1 (lacking) gives a mask of 0,
  99          * making it harmless */
 100         mask = (1 << (24 + bit)) & 0xff000000;
 101         reg = btread(ZR36057_GPPGCR1) & ~mask;
 102         if (value) {
 103                 reg |= mask;
 104         }
 105         btwrite(reg, ZR36057_GPPGCR1);
 106         udelay(1);
 107 }
 108
 109 /*
 110  * Wait til post office is no longer busy
 111  */
 112
 113 int
 114 post_office_wait (struct zoran *zr)
 115 {
 116         u32 por;
 117
 118 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 119         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 120                 /* wait for something to happen */
 121         }
 122         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 123                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 124                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 125                         por);
 126                 return -1;
 127         }
 128
 129         return 0;
 130 }
 131
 132 int
 133 post_office_write (struct zoran *zr,
 134                    unsigned int  guest,
 135                    unsigned int  reg,
 136                    unsigned int  value)
 137 {
 138         u32 por;
 139
 140         por =
 141             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 142             ((reg & 7) << 16) | (value & 0xFF);
 143         btwrite(por, ZR36057_POR);
 144
 145         return post_office_wait(zr);
 146 }
 147
 148 int
 149 post_office_read (struct zoran *zr,
 150                   unsigned int  guest,
 151                   unsigned int  reg)
 152 {
 153         u32 por;
 154
 155         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 156         btwrite(por, ZR36057_POR);
 157         if (post_office_wait(zr) < 0) {
 158                 return -1;
 159         }
 160
 161         return btread(ZR36057_POR) & 0xFF;
 162 }
 163
 164 /*
 165  * detect guests
 166  */
 167
 168 static void
 169 dump_guests (struct zoran *zr)
 170 {
 171         if (zr36067_debug > 2) {
 172                 int i, guest[8];
 173
 174                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 175                         guest[i] = post_office_read(zr, i, 0);
 176                 }
 177
 178                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 179
 180                 for (i = 1; i < 8; i++) {
 181                         printk(" 0x%02x", guest[i]);
 182                 }
 183                 printk("\n");
 184         }
 185 }
 186
 187 static inline unsigned long
 188 get_time (void)
 189 {
 190         struct timeval tv;
 191
 192         do_gettimeofday(&tv);
 193         return (1000000 * tv.tv_sec + tv.tv_usec);
 194 }
 195
 196 void
 197 detect_guest_activity (struct zoran *zr)
 198 {
 199         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 200         unsigned long t0, t1;
 201
 202         dump_guests(zr);
 203         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 204                ZR_DEVNAME(zr));
 205         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 206                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
 207         }
 208
 209         timeout = 0;
 210         j = 0;
 211         t0 = get_time();
 212         while (timeout < 10000) {
 213                 udelay(10);
 214                 timeout++;
 215                 for (i = 1; (i < 8) && (j < 8); i++) {
 216                         res = post_office_read(zr, i, 0);
 217                         if (res != guest[i]) {
 218                                 t1 = get_time();
 219                                 change[j][0] = (t1 - t0);
 220                                 t0 = t1;
 221                                 change[j][1] = i;
 222                                 change[j][2] = res;
 223                                 j++;
 224                                 guest[i] = res;
 225                         }
 226                 }
 227                 if (j >= 8)
 228                         break;
 229         }
 230         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 231
 232         for (i = 1; i < 8; i++) {
 233                 printk(" 0x%02x", guest0[i]);
 234         }
 235         printk("\n");
 236         if (j == 0) {
 237                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 238                 return;
 239         }
 240         for (i = 0; i < j; i++) {
 241                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 242                        change[i][0], change[i][1], change[i][2]);
 243         }
 244 }
 245
 246 /*
 247  * JPEG Codec access
 248  */
 249
 250 void
 251 jpeg_codec_sleep (struct zoran *zr,
 252                   int           sleep)
 253 {
 254         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
 255         if (!sleep) {
 256                 dprintk(3,
 257                         KERN_DEBUG
 258                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 259                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 260                 udelay(500);
 261         } else {
 262                 dprintk(3,
 263                         KERN_DEBUG
 264                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 265                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 266                 udelay(2);
 267         }
 268 }
 269
 270 int
 271 jpeg_codec_reset (struct zoran *zr)
 272 {
 273         /* Take the codec out of sleep */
 274         jpeg_codec_sleep(zr, 0);
 275
 276         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 277                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 278                                   0);
 279                 udelay(2);
 280         } else {
 281                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
 282                 udelay(2);
 283                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
 284                 udelay(2);
 285         }
 286
 287         return 0;
 288 }
 289
 290 /*
 291  *   Set the registers for the size we have specified. Don't bother
 292  *   trying to understand this without the ZR36057 manual in front of
 293  *   you [AC].
 294  *
 295  *   PS: The manual is free for download in .pdf format from
 296  *   www.zoran.com - nicely done those folks.
 297  */
 298
 299 static void
 300 zr36057_adjust_vfe (struct zoran          *zr,
 301                     enum zoran_codec_mode  mode)
 302 {
 303         u32 reg;
 304
 305         switch (mode) {
 306         case BUZ_MODE_MOTION_DECOMPRESS:
 307                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 308                 reg = btread(ZR36057_VFEHCR);
 309                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 310                         reg += ((1 << 10) | 1);
 311                 }
 312                 btwrite(reg, ZR36057_VFEHCR);
 313                 break;
 314         case BUZ_MODE_MOTION_COMPRESS:
 315         case BUZ_MODE_IDLE:
 316         default:
 317                 if (zr->norm == VIDEO_MODE_NTSC ||
 318                     (zr->card.type == LML33R10 &&
 319                      zr->norm == VIDEO_MODE_PAL))
 320                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 321                 else
 322                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 323                 reg = btread(ZR36057_VFEHCR);
 324                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 325                         reg -= ((1 << 10) | 1);
 326                 }
 327                 btwrite(reg, ZR36057_VFEHCR);
 328                 break;
 329         }
 330 }
 331
 332 /*
 333  * set geometry
 334  */
 335
 336 static void
 337 zr36057_set_vfe (struct zoran              *zr,
 338                  int                        video_width,
 339                  int                        video_height,
 340                  const struct zoran_format *format)
 341 {
 342         struct tvnorm *tvn;
 343         unsigned HStart, HEnd, VStart, VEnd;
 344         unsigned DispMode;
 345         unsigned VidWinWid, VidWinHt;
 346         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 347         unsigned Wa, We, Ha, He;
 348         unsigned X, Y, HorDcm, VerDcm;
 349         u32 reg;
 350         unsigned mask_line_size;
 351
 352         tvn = zr->timing;
 353
 354         Wa = tvn->Wa;
 355         Ha = tvn->Ha;
 356
 357         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 358                 ZR_DEVNAME(zr), video_width, video_height);
 359
 360         if (zr->norm != VIDEO_MODE_PAL &&
 361             zr->norm != VIDEO_MODE_NTSC &&
 362             zr->norm != VIDEO_MODE_SECAM) {
 363                 dprintk(1,
 364                         KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
 365                         ZR_DEVNAME(zr), zr->norm);
 366                 return;
 367         }
 368         if (video_width < BUZ_MIN_WIDTH ||
 369             video_height < BUZ_MIN_HEIGHT ||
 370             video_width > Wa || video_height > Ha) {
 371                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 372                         ZR_DEVNAME(zr), video_width, video_height);
 373                 return;
 374         }
 375
 376         /**** zr36057 ****/
 377
 378         /* horizontal */
 379         VidWinWid = video_width;
 380         X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
 381         We = (VidWinWid * 64) / X;
 382         HorDcm = 64 - X;
 383         hcrop1 = 2 * ((tvn->Wa - We) / 4);
 384         hcrop2 = tvn->Wa - We - hcrop1;
 385         HStart = tvn->HStart ? tvn->HStart : 1;
 386         /* (Ronald) Original comment:
 387          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 388          * this is false. It inverses chroma values on the LML33R10 (so Cr
 389          * suddenly is shown as Cb and reverse, really cool effect if you
 390          * want to see blue faces, not useful otherwise). So don't use |1.
 391          * However, the DC10 has '0' as HStart, but does need |1, so we
 392          * use a dirty check...
 393          */
 394         HEnd = HStart + tvn->Wa - 1;
 395         HStart += hcrop1;
 396         HEnd -= hcrop2;
 397         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 398             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 399         if (zr->card.vfe_pol.hsync_pol)
 400                 reg |= ZR36057_VFEHCR_HSPol;
 401         btwrite(reg, ZR36057_VFEHCR);
 402
 403         /* Vertical */
 404         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 405         VidWinHt = DispMode ? video_height : video_height / 2;
 406         Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
 407         He = (VidWinHt * 64) / Y;
 408         VerDcm = 64 - Y;
 409         vcrop1 = (tvn->Ha / 2 - He) / 2;
 410         vcrop2 = tvn->Ha / 2 - He - vcrop1;
 411         VStart = tvn->VStart;
 412         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 413         VStart += vcrop1;
 414         VEnd -= vcrop2;
 415         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 416             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 417         if (zr->card.vfe_pol.vsync_pol)
 418                 reg |= ZR36057_VFEVCR_VSPol;
 419         btwrite(reg, ZR36057_VFEVCR);
 420
 421         /* scaler and pixel format */
 422         reg = 0;
 423         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 424         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 425         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 426         /* RJ: I don't know, why the following has to be the opposite
 427          * of the corresponding ZR36060 setting, but only this way
 428          * we get the correct colors when uncompressing to the screen  */
 429         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 430         /* RJ: Don't know if that is needed for NTSC also */
 431         if (zr->norm != VIDEO_MODE_NTSC)
 432                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 433         reg |= ZR36057_VFESPFR_TopField;
 434         if (HorDcm >= 48) {
 435                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 436         } else if (HorDcm >= 32) {
 437                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 438         } else if (HorDcm >= 16) {
 439                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 440         }
 441         reg |= format->vfespfr;
 442         btwrite(reg, ZR36057_VFESPFR);
 443
 444         /* display configuration */
 445         reg = (16 << ZR36057_VDCR_MinPix)
 446             | (VidWinHt << ZR36057_VDCR_VidWinHt)
 447             | (VidWinWid << ZR36057_VDCR_VidWinWid);
 448         if (pci_pci_problems & PCIPCI_TRITON)
 449                 // || zr->revision < 1) // Revision 1 has also Triton support
 450                 reg &= ~ZR36057_VDCR_Triton;
 451         else
 452                 reg |= ZR36057_VDCR_Triton;
 453         btwrite(reg, ZR36057_VDCR);
 454
 455         /* (Ronald) don't write this if overlay_mask = NULL */
 456         if (zr->overlay_mask) {
 457                 /* Write overlay clipping mask data, but don't enable overlay clipping */
 458                 /* RJ: since this makes only sense on the screen, we use
 459                  * zr->overlay_settings.width instead of video_width */
 460
 461                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 462                 reg = virt_to_bus(zr->overlay_mask);
 463                 btwrite(reg, ZR36057_MMTR);
 464                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 465                 btwrite(reg, ZR36057_MMBR);
 466                 reg =
 467                     mask_line_size - (zr->overlay_settings.width +
 468                                       31) / 32;
 469                 if (DispMode == 0)
 470                         reg += mask_line_size;
 471                 reg <<= ZR36057_OCR_MaskStride;
 472                 btwrite(reg, ZR36057_OCR);
 473         }
 474
 475         zr36057_adjust_vfe(zr, zr->codec_mode);
 476 }
 477
 478 /*
 479  * Switch overlay on or off
 480  */
 481
 482 void
 483 zr36057_overlay (struct zoran *zr,
 484                  int           on)
 485 {
 486         u32 reg;
 487
 488         if (on) {
 489                 /* do the necessary settings ... */
 490                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 491
 492                 zr36057_set_vfe(zr,
 493                                 zr->overlay_settings.width,
 494                                 zr->overlay_settings.height,
 495                                 zr->overlay_settings.format);
 496
 497                 /* Start and length of each line MUST be 4-byte aligned.
 498                  * This should be allready checked before the call to this routine.
 499                  * All error messages are internal driver checking only! */
 500
 501                 /* video display top and bottom registers */
 502                 reg = (long) zr->buffer.base +
 503                     zr->overlay_settings.x *
 504                     ((zr->overlay_settings.format->depth + 7) / 8) +
 505                     zr->overlay_settings.y *
 506                     zr->buffer.bytesperline;
 507                 btwrite(reg, ZR36057_VDTR);
 508                 if (reg & 3)
 509                         dprintk(1,
 510                                 KERN_ERR
 511                                 "%s: zr36057_overlay() - video_address not aligned\n",
 512                                 ZR_DEVNAME(zr));
 513                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 514                         reg += zr->buffer.bytesperline;
 515                 btwrite(reg, ZR36057_VDBR);
 516
 517                 /* video stride, status, and frame grab register */
 518                 reg = zr->buffer.bytesperline -
 519                     zr->overlay_settings.width *
 520                     ((zr->overlay_settings.format->depth + 7) / 8);
 521                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 522                         reg += zr->buffer.bytesperline;
 523                 if (reg & 3)
 524                         dprintk(1,
 525                                 KERN_ERR
 526                                 "%s: zr36057_overlay() - video_stride not aligned\n",
 527                                 ZR_DEVNAME(zr));
 528                 reg = (reg << ZR36057_VSSFGR_DispStride);
 529                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 530                 btwrite(reg, ZR36057_VSSFGR);
 531
 532                 /* Set overlay clipping */
 533                 if (zr->overlay_settings.clipcount > 0)
 534                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 535
 536                 /* ... and switch it on */
 537                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 538         } else {
 539                 /* Switch it off */
 540                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 541         }
 542 }
 543
 544 /*
 545  * The overlay mask has one bit for each pixel on a scan line,
 546  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 547  */
 548
 549 void
 550 write_overlay_mask (struct file       *file,
 551                     struct video_clip *vp,
 552                     int                count)
 553 {
 554         struct zoran_fh *fh = file->private_data;
 555         struct zoran *zr = fh->zr;
 556         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 557         u32 *mask;
 558         int x, y, width, height;
 559         unsigned i, j, k;
 560         u32 reg;
 561
 562         /* fill mask with one bits */
 563         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 564         reg = 0;
 565
 566         for (i = 0; i < count; ++i) {
 567                 /* pick up local copy of clip */
 568                 x = vp[i].x;
 569                 y = vp[i].y;
 570                 width = vp[i].width;
 571                 height = vp[i].height;
 572
 573                 /* trim clips that extend beyond the window */
 574                 if (x < 0) {
 575                         width += x;
 576                         x = 0;
 577                 }
 578                 if (y < 0) {
 579                         height += y;
 580                         y = 0;
 581                 }
 582                 if (x + width > fh->overlay_settings.width) {
 583                         width = fh->overlay_settings.width - x;
 584                 }
 585                 if (y + height > fh->overlay_settings.height) {
 586                         height = fh->overlay_settings.height - y;
 587                 }
 588
 589                 /* ignore degenerate clips */
 590                 if (height <= 0) {
 591                         continue;
 592                 }
 593                 if (width <= 0) {
 594                         continue;
 595                 }
 596
 597                 /* apply clip for each scan line */
 598                 for (j = 0; j < height; ++j) {
 599                         /* reset bit for each pixel */
 600                         /* this can be optimized later if need be */
 601                         mask = fh->overlay_mask + (y + j) * mask_line_size;
 602                         for (k = 0; k < width; ++k) {
 603                                 mask[(x + k) / 32] &=
 604                                     ~((u32) 1 << (x + k) % 32);
 605                         }
 606                 }
 607         }
 608 }
 609
 610 /* Enable/Disable uncompressed memory grabbing of the 36057 */
 611
 612 void
 613 zr36057_set_memgrab (struct zoran *zr,
 614                      int           mode)
 615 {
 616         if (mode) {
 617                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 618                  * means a capture is already in progress, but FrameGrab==1
 619                  * doesn't necessary mean that.  It's more correct to say a 1
 620                  * to 0 transition indicates a capture completed.  If a
 621                  * capture is pending when capturing is tuned off, FrameGrab
 622                  * will be stuck at 1 until capturing is turned back on.
 623                  */
 624                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 625                         dprintk(1,
 626                                 KERN_WARNING
 627                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 628                                 ZR_DEVNAME(zr));
 629
 630                 /* switch on VSync interrupts */
 631                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 632                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 633
 634                 /* enable SnapShot */
 635                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 636
 637                 /* Set zr36057 video front end  and enable video */
 638                 zr36057_set_vfe(zr, zr->v4l_settings.width,
 639                                 zr->v4l_settings.height,
 640                                 zr->v4l_settings.format);
 641
 642                 zr->v4l_memgrab_active = 1;
 643         } else {
 644                 /* switch off VSync interrupts */
 645                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 646
 647                 zr->v4l_memgrab_active = 0;
 648                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 649
 650                 /* reenable grabbing to screen if it was running */
 651                 if (zr->v4l_overlay_active) {
 652                         zr36057_overlay(zr, 1);
 653                 } else {
 654                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 655                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 656                 }
 657         }
 658 }
 659
 660 int
 661 wait_grab_pending (struct zoran *zr)
 662 {
 663         unsigned long flags;
 664
 665         /* wait until all pending grabs are finished */
 666
 667         if (!zr->v4l_memgrab_active)
 668                 return 0;
 669
 670         wait_event_interruptible(zr->v4l_capq,
 671                         (zr->v4l_pend_tail == zr->v4l_pend_head));
 672         if (signal_pending(current))
 673                 return -ERESTARTSYS;
 674
 675         spin_lock_irqsave(&zr->spinlock, flags);
 676         zr36057_set_memgrab(zr, 0);
 677         spin_unlock_irqrestore(&zr->spinlock, flags);
 678
 679         return 0;
 680 }
 681
 682 /*****************************************************************************
 683  *                                                                           *
 684  *  Set up the Buz-specific MJPEG part                                       *
 685  *                                                                           *
 686  *****************************************************************************/
 687
 688 static inline void
 689 set_frame (struct zoran *zr,
 690            int           val)
 691 {
 692         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 693 }
 694
 695 static void
 696 set_videobus_dir (struct zoran *zr,
 697                   int           val)
 698 {
 699         switch (zr->card.type) {
 700         case LML33:
 701         case LML33R10:
 702                 if (lml33dpath == 0)
 703                         GPIO(zr, 5, val);
 704                 else
 705                         GPIO(zr, 5, 1);
 706                 break;
 707         default:
 708                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
 709                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
 710                 break;
 711         }
 712 }
 713
 714 static void
 715 init_jpeg_queue (struct zoran *zr)
 716 {
 717         int i;
 718
 719         /* re-initialize DMA ring stuff */
 720         zr->jpg_que_head = 0;
 721         zr->jpg_dma_head = 0;
 722         zr->jpg_dma_tail = 0;
 723         zr->jpg_que_tail = 0;
 724         zr->jpg_seq_num = 0;
 725         zr->JPEG_error = 0;
 726         zr->num_errors = 0;
 727         zr->jpg_err_seq = 0;
 728         zr->jpg_err_shift = 0;
 729         zr->jpg_queued_num = 0;
 730         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 731                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 732         }
 733         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 734                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 735         }
 736 }
 737
 738 static void
 739 zr36057_set_jpg (struct zoran          *zr,
 740                  enum zoran_codec_mode  mode)
 741 {
 742         struct tvnorm *tvn;
 743         u32 reg;
 744
 745         tvn = zr->timing;
 746
 747         /* assert P_Reset, disable code transfer, deassert Active */
 748         btwrite(0, ZR36057_JPC);
 749
 750         /* MJPEG compression mode */
 751         switch (mode) {
 752
 753         case BUZ_MODE_MOTION_COMPRESS:
 754         default:
 755                 reg = ZR36057_JMC_MJPGCmpMode;
 756                 break;
 757
 758         case BUZ_MODE_MOTION_DECOMPRESS:
 759                 reg = ZR36057_JMC_MJPGExpMode;
 760                 reg |= ZR36057_JMC_SyncMstr;
 761                 /* RJ: The following is experimental - improves the output to screen */
 762                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 763                 break;
 764
 765         case BUZ_MODE_STILL_COMPRESS:
 766                 reg = ZR36057_JMC_JPGCmpMode;
 767                 break;
 768
 769         case BUZ_MODE_STILL_DECOMPRESS:
 770                 reg = ZR36057_JMC_JPGExpMode;
 771                 break;
 772
 773         }
 774         reg |= ZR36057_JMC_JPG;
 775         if (zr->jpg_settings.field_per_buff == 1)
 776                 reg |= ZR36057_JMC_Fld_per_buff;
 777         btwrite(reg, ZR36057_JMC);
 778
 779         /* vertical */
 780         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 781         reg = (6 << ZR36057_VSP_VsyncSize) |
 782               (tvn->Ht << ZR36057_VSP_FrmTot);
 783         btwrite(reg, ZR36057_VSP);
 784         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 785               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 786         btwrite(reg, ZR36057_FVAP);
 787
 788         /* horizontal */
 789         if (zr->card.vfe_pol.hsync_pol)
 790                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 791         else
 792                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 793         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 794               (tvn->Wt << ZR36057_HSP_LineTot);
 795         btwrite(reg, ZR36057_HSP);
 796         reg = ((zr->jpg_settings.img_x +
 797                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 798               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 799         btwrite(reg, ZR36057_FHAP);
 800
 801         /* field process parameters */
 802         if (zr->jpg_settings.odd_even)
 803                 reg = ZR36057_FPP_Odd_Even;
 804         else
 805                 reg = 0;
 806
 807         btwrite(reg, ZR36057_FPP);
 808
 809         /* Set proper VCLK Polarity, else colors will be wrong during playback */
 810         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 811
 812         /* code base address */
 813         reg = virt_to_bus(zr->stat_com);
 814         btwrite(reg, ZR36057_JCBA);
 815
 816         /* FIFO threshold (FIFO is 160. double words) */
 817         /* NOTE: decimal values here */
 818         switch (mode) {
 819
 820         case BUZ_MODE_STILL_COMPRESS:
 821         case BUZ_MODE_MOTION_COMPRESS:
 822                 if (zr->card.type != BUZ)
 823                         reg = 140;
 824                 else
 825                         reg = 60;
 826                 break;
 827
 828         case BUZ_MODE_STILL_DECOMPRESS:
 829         case BUZ_MODE_MOTION_DECOMPRESS:
 830                 reg = 20;
 831                 break;
 832
 833         default:
 834                 reg = 80;
 835                 break;
 836
 837         }
 838         btwrite(reg, ZR36057_JCFT);
 839         zr36057_adjust_vfe(zr, mode);
 840
 841 }
 842
 843 void
 844 print_interrupts (struct zoran *zr)
 845 {
 846         int res, noerr = 0;
 847
 848         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 849         if ((res = zr->field_counter) < -1 || res > 1) {
 850                 printk(" FD:%d", res);
 851         }
 852         if ((res = zr->intr_counter_GIRQ1) != 0) {
 853                 printk(" GIRQ1:%d", res);
 854                 noerr++;
 855         }
 856         if ((res = zr->intr_counter_GIRQ0) != 0) {
 857                 printk(" GIRQ0:%d", res);
 858                 noerr++;
 859         }
 860         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 861                 printk(" CodRepIRQ:%d", res);
 862                 noerr++;
 863         }
 864         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 865                 printk(" JPEGRepIRQ:%d", res);
 866                 noerr++;
 867         }
 868         if (zr->JPEG_max_missed) {
 869                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 870                        zr->JPEG_min_missed);
 871         }
 872         if (zr->END_event_missed) {
 873                 printk(" ENDs missed: %d", zr->END_event_missed);
 874         }
 875         //if (zr->jpg_queued_num) {
 876         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 877                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 878         //}
 879         if (!noerr) {
 880                 printk(": no interrupts detected.");
 881         }
 882         printk("\n");
 883 }
 884
 885 void
 886 clear_interrupt_counters (struct zoran *zr)
 887 {
 888         zr->intr_counter_GIRQ1 = 0;
 889         zr->intr_counter_GIRQ0 = 0;
 890         zr->intr_counter_CodRepIRQ = 0;
 891         zr->intr_counter_JPEGRepIRQ = 0;
 892         zr->field_counter = 0;
 893         zr->IRQ1_in = 0;
 894         zr->IRQ1_out = 0;
 895         zr->JPEG_in = 0;
 896         zr->JPEG_out = 0;
 897         zr->JPEG_0 = 0;
 898         zr->JPEG_1 = 0;
 899         zr->END_event_missed = 0;
 900         zr->JPEG_missed = 0;
 901         zr->JPEG_max_missed = 0;
 902         zr->JPEG_min_missed = 0x7fffffff;
 903 }
 904
 905 static u32
 906 count_reset_interrupt (struct zoran *zr)
 907 {
 908         u32 isr;
 909
 910         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 911                 if (isr & ZR36057_ISR_GIRQ1) {
 912                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 913                         zr->intr_counter_GIRQ1++;
 914                 }
 915                 if (isr & ZR36057_ISR_GIRQ0) {
 916                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 917                         zr->intr_counter_GIRQ0++;
 918                 }
 919                 if (isr & ZR36057_ISR_CodRepIRQ) {
 920                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 921                         zr->intr_counter_CodRepIRQ++;
 922                 }
 923                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
 924                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 925                         zr->intr_counter_JPEGRepIRQ++;
 926                 }
 927         }
 928         return isr;
 929 }
 930
 931 void
 932 jpeg_start (struct zoran *zr)
 933 {
 934         int reg;
 935
 936         zr->frame_num = 0;
 937
 938         /* deassert P_reset, disable code transfer, deassert Active */
 939         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 940         /* stop flushing the internal code buffer */
 941         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 942         /* enable code transfer */
 943         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 944
 945         /* clear IRQs */
 946         btwrite(IRQ_MASK, ZR36057_ISR);
 947         /* enable the JPEG IRQs */
 948         btwrite(zr->card.jpeg_int |
 949                         ZR36057_ICR_JPEGRepIRQ |
 950                         ZR36057_ICR_IntPinEn,
 951                 ZR36057_ICR);
 952
 953         set_frame(zr, 0);       // \FRAME
 954
 955         /* set the JPEG codec guest ID */
 956         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 957                (0 << ZR36057_JCGI_JPEGuestReg);
 958         btwrite(reg, ZR36057_JCGI);
 959
 960         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 961             zr->card.video_codec == CODEC_TYPE_ZR36050) {
 962                 /* Enable processing on the ZR36016 */
 963                 if (zr->vfe)
 964                         zr36016_write(zr->vfe, 0, 1);
 965
 966                 /* load the address of the GO register in the ZR36050 latch */
 967                 post_office_write(zr, 0, 0, 0);
 968         }
 969
 970         /* assert Active */
 971         btor(ZR36057_JPC_Active, ZR36057_JPC);
 972
 973         /* enable the Go generation */
 974         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 975         udelay(30);
 976
 977         set_frame(zr, 1);       // /FRAME
 978
 979         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 980 }
 981
 982 void
 983 zr36057_enable_jpg (struct zoran          *zr,
 984                     enum zoran_codec_mode  mode)
 985 {
 986         static int zero;
 987         static int one = 1;
 988         struct vfe_settings cap;
 989         int field_size =
 990             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 991
 992         zr->codec_mode = mode;
 993
 994         cap.x = zr->jpg_settings.img_x;
 995         cap.y = zr->jpg_settings.img_y;
 996         cap.width = zr->jpg_settings.img_width;
 997         cap.height = zr->jpg_settings.img_height;
 998         cap.decimation =
 999             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
1000         cap.quality = zr->jpg_settings.jpg_comp.quality;
1001
1002         switch (mode) {
1003
1004         case BUZ_MODE_MOTION_COMPRESS: {
1005                 struct jpeg_app_marker app;
1006                 struct jpeg_com_marker com;
1007
1008                 /* In motion compress mode, the decoder output must be enabled, and
1009                  * the video bus direction set to input.
1010                  */
1011                 set_videobus_dir(zr, 0);
1012                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1013                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1014
1015                 /* Take the JPEG codec and the VFE out of sleep */
1016                 jpeg_codec_sleep(zr, 0);
1017
1018                 /* set JPEG app/com marker */
1019                 app.appn = zr->jpg_settings.jpg_comp.APPn;
1020                 app.len = zr->jpg_settings.jpg_comp.APP_len;
1021                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1022                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1023                                    sizeof(struct jpeg_app_marker), &app);
1024
1025                 com.len = zr->jpg_settings.jpg_comp.COM_len;
1026                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1027                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1028                                    sizeof(struct jpeg_com_marker), &com);
1029
1030                 /* Setup the JPEG codec */
1031                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1032                                    sizeof(int), &field_size);
1033                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1034                                      &zr->card.vfe_pol);
1035                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1036
1037                 /* Setup the VFE */
1038                 if (zr->vfe) {
1039                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1040                                          sizeof(int), &field_size);
1041                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1042                                            &zr->card.vfe_pol);
1043                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1044                 }
1045
1046                 init_jpeg_queue(zr);
1047                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1048
1049                 clear_interrupt_counters(zr);
1050                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1051                         ZR_DEVNAME(zr));
1052                 break;
1053         }
1054
1055         case BUZ_MODE_MOTION_DECOMPRESS:
1056                 /* In motion decompression mode, the decoder output must be disabled, and
1057                  * the video bus direction set to output.
1058                  */
1059                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1060                 set_videobus_dir(zr, 1);
1061                 encoder_command(zr, ENCODER_SET_INPUT, &one);
1062
1063                 /* Take the JPEG codec and the VFE out of sleep */
1064                 jpeg_codec_sleep(zr, 0);
1065                 /* Setup the VFE */
1066                 if (zr->vfe) {
1067                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1068                                            &zr->card.vfe_pol);
1069                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1070                 }
1071                 /* Setup the JPEG codec */
1072                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1073                                      &zr->card.vfe_pol);
1074                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1075
1076                 init_jpeg_queue(zr);
1077                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1078
1079                 clear_interrupt_counters(zr);
1080                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1081                         ZR_DEVNAME(zr));
1082                 break;
1083
1084         case BUZ_MODE_IDLE:
1085         default:
1086                 /* shut down processing */
1087                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1088                       ZR36057_ICR);
1089                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1090                         ZR36057_ISR);
1091                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1092
1093                 msleep(50);
1094
1095                 set_videobus_dir(zr, 0);
1096                 set_frame(zr, 1);       // /FRAME
1097                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1098                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1099                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1100                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1101                 jpeg_codec_reset(zr);
1102                 jpeg_codec_sleep(zr, 1);
1103                 zr36057_adjust_vfe(zr, mode);
1104
1105                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1106                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1107
1108                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1109                 break;
1110
1111         }
1112 }
1113
1114 /* when this is called the spinlock must be held */
1115 void
1116 zoran_feed_stat_com (struct zoran *zr)
1117 {
1118         /* move frames from pending queue to DMA */
1119
1120         int frame, i, max_stat_com;
1121
1122         max_stat_com =
1123             (zr->jpg_settings.TmpDcm ==
1124              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1125
1126         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1127                zr->jpg_dma_head < zr->jpg_que_head) {
1128
1129                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1130                 if (zr->jpg_settings.TmpDcm == 1) {
1131                         /* fill 1 stat_com entry */
1132                         i = (zr->jpg_dma_head -
1133                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1134                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1135                                 break;
1136                         zr->stat_com[i] =
1137                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1138                 } else {
1139                         /* fill 2 stat_com entries */
1140                         i = ((zr->jpg_dma_head -
1141                               zr->jpg_err_shift) & 1) * 2;
1142                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1143                                 break;
1144                         zr->stat_com[i] =
1145                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1146                         zr->stat_com[i + 1] =
1147                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1148                 }
1149                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1150                 zr->jpg_dma_head++;
1151
1152         }
1153         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1154                 zr->jpg_queued_num++;
1155 }
1156
1157 /* when this is called the spinlock must be held */
1158 static void
1159 zoran_reap_stat_com (struct zoran *zr)
1160 {
1161         /* move frames from DMA queue to done queue */
1162
1163         int i;
1164         u32 stat_com;
1165         unsigned int seq;
1166         unsigned int dif;
1167         struct zoran_jpg_buffer *buffer;
1168         int frame;
1169
1170         /* In motion decompress we don't have a hardware frame counter,
1171          * we just count the interrupts here */
1172
1173         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1174                 zr->jpg_seq_num++;
1175         }
1176         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1177                 if (zr->jpg_settings.TmpDcm == 1)
1178                         i = (zr->jpg_dma_tail -
1179                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1180                 else
1181                         i = ((zr->jpg_dma_tail -
1182                               zr->jpg_err_shift) & 1) * 2 + 1;
1183
1184                 stat_com = le32_to_cpu(zr->stat_com[i]);
1185
1186                 if ((stat_com & 1) == 0) {
1187                         return;
1188                 }
1189                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1190                 buffer = &zr->jpg_buffers.buffer[frame];
1191                 do_gettimeofday(&buffer->bs.timestamp);
1192
1193                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1194                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1195
1196                         /* update sequence number with the help of the counter in stat_com */
1197
1198                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1199                         dif = (seq - zr->jpg_seq_num) & 0xff;
1200                         zr->jpg_seq_num += dif;
1201                 } else {
1202                         buffer->bs.length = 0;
1203                 }
1204                 buffer->bs.seq =
1205                     zr->jpg_settings.TmpDcm ==
1206                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1207                 buffer->state = BUZ_STATE_DONE;
1208
1209                 zr->jpg_dma_tail++;
1210         }
1211 }
1212
1213 static void
1214 error_handler (struct zoran *zr,
1215                u32           astat,
1216                u32           stat)
1217 {
1218         /* This is JPEG error handling part */
1219         if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1220             (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1221                 //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1222                 return;
1223         }
1224
1225         if ((stat & 1) == 0 &&
1226             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1227             zr->jpg_dma_tail - zr->jpg_que_tail >=
1228              zr->jpg_buffers.num_buffers) {
1229                 /* No free buffers... */
1230                 zoran_reap_stat_com(zr);
1231                 zoran_feed_stat_com(zr);
1232                 wake_up_interruptible(&zr->jpg_capq);
1233                 zr->JPEG_missed = 0;
1234                 return;
1235         }
1236
1237         if (zr->JPEG_error != 1) {
1238                 /*
1239                  * First entry: error just happened during normal operation
1240                  *
1241                  * In BUZ_MODE_MOTION_COMPRESS:
1242                  *
1243                  * Possible glitch in TV signal. In this case we should
1244                  * stop the codec and wait for good quality signal before
1245                  * restarting it to avoid further problems
1246                  *
1247                  * In BUZ_MODE_MOTION_DECOMPRESS:
1248                  *
1249                  * Bad JPEG frame: we have to mark it as processed (codec crashed
1250                  * and was not able to do it itself), and to remove it from queue.
1251                  */
1252                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1253                 udelay(1);
1254                 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1255                 btwrite(0, ZR36057_JPC);
1256                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1257                 jpeg_codec_reset(zr);
1258                 jpeg_codec_sleep(zr, 1);
1259                 zr->JPEG_error = 1;
1260                 zr->num_errors++;
1261
1262                 /* Report error */
1263                 if (zr36067_debug > 1 && zr->num_errors <= 8) {
1264                         long frame;
1265                         frame =
1266                             zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1267                         printk(KERN_ERR
1268                                "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1269                                ZR_DEVNAME(zr), stat, zr->last_isr,
1270                                zr->jpg_que_tail, zr->jpg_dma_tail,
1271                                zr->jpg_dma_head, zr->jpg_que_head,
1272                                zr->jpg_seq_num, frame);
1273                         printk("stat_com frames:");
1274                         {
1275                                 int i, j;
1276                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1277                                         for (i = 0;
1278                                              i < zr->jpg_buffers.num_buffers;
1279                                              i++) {
1280                                                 if (le32_to_cpu(zr->stat_com[j]) ==
1281                                                     zr->jpg_buffers.
1282                                                     buffer[i].
1283                                                     frag_tab_bus) {
1284                                                         printk("% d->%d",
1285                                                                j, i);
1286                                                 }
1287                                         }
1288                                 }
1289                                 printk("\n");
1290                         }
1291                 }
1292                 /* Find an entry in stat_com and rotate contents */
1293                 {
1294                         int i;
1295
1296                         if (zr->jpg_settings.TmpDcm == 1)
1297                                 i = (zr->jpg_dma_tail -
1298                                      zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1299                         else
1300                                 i = ((zr->jpg_dma_tail -
1301                                       zr->jpg_err_shift) & 1) * 2;
1302                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1303                                 /* Mimic zr36067 operation */
1304                                 zr->stat_com[i] |= cpu_to_le32(1);
1305                                 if (zr->jpg_settings.TmpDcm != 1)
1306                                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1307                                 /* Refill */
1308                                 zoran_reap_stat_com(zr);
1309                                 zoran_feed_stat_com(zr);
1310                                 wake_up_interruptible(&zr->jpg_capq);
1311                                 /* Find an entry in stat_com again after refill */
1312                                 if (zr->jpg_settings.TmpDcm == 1)
1313                                         i = (zr->jpg_dma_tail -
1314                                              zr->jpg_err_shift) &
1315                                             BUZ_MASK_STAT_COM;
1316                                 else
1317                                         i = ((zr->jpg_dma_tail -
1318                                               zr->jpg_err_shift) & 1) * 2;
1319                         }
1320                         if (i) {
1321                                 /* Rotate stat_comm entries to make current entry first */
1322                                 int j;
1323                                 u32 bus_addr[BUZ_NUM_STAT_COM];
1324
1325                                 /* Here we are copying the stat_com array, which
1326                                  * is already in little endian format, so
1327                                  * no endian conversions here
1328                                  */
1329                                 memcpy(bus_addr, zr->stat_com,
1330                                        sizeof(bus_addr));
1331                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1332                                         zr->stat_com[j] =
1333                                             bus_addr[(i + j) &
1334                                                      BUZ_MASK_STAT_COM];
1335
1336                                 }
1337                                 zr->jpg_err_shift += i;
1338                                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1339                         }
1340                         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1341                                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1342                 }
1343         }
1344
1345         /* Now the stat_comm buffer is ready for restart */
1346         do {
1347                 int status, mode;
1348
1349                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1350                         decoder_command(zr, DECODER_GET_STATUS, &status);
1351                         mode = CODEC_DO_COMPRESSION;
1352                 } else {
1353                         status = 0;
1354                         mode = CODEC_DO_EXPANSION;
1355                 }
1356                 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1357                     (status & DECODER_STATUS_GOOD)) {
1358                         /********** RESTART code *************/
1359                         jpeg_codec_reset(zr);
1360                         zr->codec->set_mode(zr->codec, mode);
1361                         zr36057_set_jpg(zr, zr->codec_mode);
1362                         jpeg_start(zr);
1363
1364                         if (zr->num_errors <= 8)
1365                                 dprintk(2, KERN_INFO "%s: Restart\n",
1366                                         ZR_DEVNAME(zr));
1367
1368                         zr->JPEG_missed = 0;
1369                         zr->JPEG_error = 2;
1370                         /********** End RESTART code ***********/
1371                 }
1372         } while (0);
1373 }
1374
1375 irqreturn_t
1376 zoran_irq (int             irq,
1377            void           *dev_id)
1378 {
1379         u32 stat, astat;
1380         int count;
1381         struct zoran *zr;
1382         unsigned long flags;
1383
1384         zr = dev_id;
1385         count = 0;
1386
1387         if (zr->testing) {
1388                 /* Testing interrupts */
1389                 spin_lock_irqsave(&zr->spinlock, flags);
1390                 while ((stat = count_reset_interrupt(zr))) {
1391                         if (count++ > 100) {
1392                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1393                                 dprintk(1,
1394                                         KERN_ERR
1395                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1396                                         ZR_DEVNAME(zr), stat);
1397                                 wake_up_interruptible(&zr->test_q);
1398                         }
1399                 }
1400                 zr->last_isr = stat;
1401                 spin_unlock_irqrestore(&zr->spinlock, flags);
1402                 return IRQ_HANDLED;
1403         }
1404
1405         spin_lock_irqsave(&zr->spinlock, flags);
1406         while (1) {
1407                 /* get/clear interrupt status bits */
1408                 stat = count_reset_interrupt(zr);
1409                 astat = stat & IRQ_MASK;
1410                 if (!astat) {
1411                         break;
1412                 }
1413                 dprintk(4,
1414                         KERN_DEBUG
1415                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1416                         astat, btread(ZR36057_ICR));
1417                 if (astat & zr->card.vsync_int) {       // SW
1418
1419                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1420                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1421                                 /* count missed interrupts */
1422                                 zr->JPEG_missed++;
1423                         }
1424                         //post_office_read(zr,1,0);
1425                         /* Interrupts may still happen when
1426                          * zr->v4l_memgrab_active is switched off.
1427                          * We simply ignore them */
1428
1429                         if (zr->v4l_memgrab_active) {
1430
1431                                 /* A lot more checks should be here ... */
1432                                 if ((btread(ZR36057_VSSFGR) &
1433                                      ZR36057_VSSFGR_SnapShot) == 0)
1434                                         dprintk(1,
1435                                                 KERN_WARNING
1436                                                 "%s: BuzIRQ with SnapShot off ???\n",
1437                                                 ZR_DEVNAME(zr));
1438
1439                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1440                                         /* There is a grab on a frame going on, check if it has finished */
1441
1442                                         if ((btread(ZR36057_VSSFGR) &
1443                                              ZR36057_VSSFGR_FrameGrab) ==
1444                                             0) {
1445                                                 /* it is finished, notify the user */
1446
1447                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1448                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1449                                                 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1450                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1451                                                 zr->v4l_pend_tail++;
1452                                         }
1453                                 }
1454
1455                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1456                                         wake_up_interruptible(&zr->v4l_capq);
1457
1458                                 /* Check if there is another grab queued */
1459
1460                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1461                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1462
1463                                         int frame = zr->v4l_pend[zr->v4l_pend_tail &
1464                                                          V4L_MASK_FRAME];
1465                                         u32 reg;
1466
1467                                         zr->v4l_grab_frame = frame;
1468
1469                                         /* Set zr36057 video front end and enable video */
1470
1471                                         /* Buffer address */
1472
1473                                         reg =
1474                                             zr->v4l_buffers.buffer[frame].
1475                                             fbuffer_bus;
1476                                         btwrite(reg, ZR36057_VDTR);
1477                                         if (zr->v4l_settings.height >
1478                                             BUZ_MAX_HEIGHT / 2)
1479                                                 reg +=
1480                                                     zr->v4l_settings.
1481                                                     bytesperline;
1482                                         btwrite(reg, ZR36057_VDBR);
1483
1484                                         /* video stride, status, and frame grab register */
1485                                         reg = 0;
1486                                         if (zr->v4l_settings.height >
1487                                             BUZ_MAX_HEIGHT / 2)
1488                                                 reg +=
1489                                                     zr->v4l_settings.
1490                                                     bytesperline;
1491                                         reg =
1492                                             (reg <<
1493                                              ZR36057_VSSFGR_DispStride);
1494                                         reg |= ZR36057_VSSFGR_VidOvf;
1495                                         reg |= ZR36057_VSSFGR_SnapShot;
1496                                         reg |= ZR36057_VSSFGR_FrameGrab;
1497                                         btwrite(reg, ZR36057_VSSFGR);
1498
1499                                         btor(ZR36057_VDCR_VidEn,
1500                                              ZR36057_VDCR);
1501                                 }
1502                         }
1503
1504                         /* even if we don't grab, we do want to increment
1505                          * the sequence counter to see lost frames */
1506                         zr->v4l_grab_seq++;
1507                 }
1508 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1509                 if (astat & ZR36057_ISR_CodRepIRQ) {
1510                         zr->intr_counter_CodRepIRQ++;
1511                         IDEBUG(printk
1512                                (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1513                                 ZR_DEVNAME(zr)));
1514                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1515                 }
1516 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1517
1518 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1519                 if (astat & ZR36057_ISR_JPEGRepIRQ) {
1520
1521                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1522                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1523                                 if (zr36067_debug > 1 &&
1524                                     (!zr->frame_num || zr->JPEG_error)) {
1525                                         printk(KERN_INFO
1526                                                "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1527                                                ZR_DEVNAME(zr), stat,
1528                                                zr->jpg_settings.odd_even,
1529                                                zr->jpg_settings.
1530                                                field_per_buff,
1531                                                zr->JPEG_missed);
1532                                         {
1533                                                 char sc[] = "0000";
1534                                                 char sv[5];
1535                                                 int i;
1536                                                 strcpy(sv, sc);
1537                                                 for (i = 0; i < 4; i++) {
1538                                                         if (le32_to_cpu(zr->stat_com[i]) & 1)
1539                                                                 sv[i] = '1';
1540                                                 }
1541                                                 sv[4] = 0;
1542                                                 printk(KERN_INFO
1543                                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1544                                                        ZR_DEVNAME(zr), sv,
1545                                                        zr->jpg_que_tail,
1546                                                        zr->jpg_dma_tail,
1547                                                        zr->jpg_dma_head,
1548                                                        zr->jpg_que_head);
1549                                         }
1550                                 } else {
1551                                         if (zr->JPEG_missed > zr->JPEG_max_missed)      // Get statistics
1552                                                 zr->JPEG_max_missed =
1553                                                     zr->JPEG_missed;
1554                                         if (zr->JPEG_missed <
1555                                             zr->JPEG_min_missed)
1556                                                 zr->JPEG_min_missed =
1557                                                     zr->JPEG_missed;
1558                                 }
1559
1560                                 if (zr36067_debug > 2 && zr->frame_num < 6) {
1561                                         int i;
1562                                         printk("%s: seq=%ld stat_com:",
1563                                                ZR_DEVNAME(zr), zr->jpg_seq_num);
1564                                         for (i = 0; i < 4; i++) {
1565                                                 printk(" %08x",
1566                                                        le32_to_cpu(zr->stat_com[i]));
1567                                         }
1568                                         printk("\n");
1569                                 }
1570                                 zr->frame_num++;
1571                                 zr->JPEG_missed = 0;
1572                                 zr->JPEG_error = 0;
1573                                 zoran_reap_stat_com(zr);
1574                                 zoran_feed_stat_com(zr);
1575                                 wake_up_interruptible(&zr->jpg_capq);
1576                         } /*else {
1577                               dprintk(1,
1578                                         KERN_ERR
1579                                         "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1580                                         ZR_DEVNAME(zr));
1581                         }*/
1582                 }
1583 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1584
1585                 /* DATERR, too many fields missed, error processing */
1586                 if ((astat & zr->card.jpeg_int) ||
1587                     zr->JPEG_missed > 25 ||
1588                     zr->JPEG_error == 1 ||
1589                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1590                      (zr->frame_num & (zr->JPEG_missed >
1591                                        zr->jpg_settings.field_per_buff)))) {
1592                         error_handler(zr, astat, stat);
1593                 }
1594
1595                 count++;
1596                 if (count > 10) {
1597                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1598                                 ZR_DEVNAME(zr), count);
1599                         if (count > 20) {
1600                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1601                                 dprintk(2,
1602                                         KERN_ERR
1603                                         "%s: IRQ lockup, cleared int mask\n",
1604                                         ZR_DEVNAME(zr));
1605                                 break;
1606                         }
1607                 }
1608                 zr->last_isr = stat;
1609         }
1610         spin_unlock_irqrestore(&zr->spinlock, flags);
1611
1612         return IRQ_HANDLED;
1613 }
1614
1615 void
1616 zoran_set_pci_master (struct zoran *zr,
1617                       int           set_master)
1618 {
1619         if (set_master) {
1620                 pci_set_master(zr->pci_dev);
1621         } else {
1622                 u16 command;
1623
1624                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1625                 command &= ~PCI_COMMAND_MASTER;
1626                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1627         }
1628 }
1629
1630 void
1631 zoran_init_hardware (struct zoran *zr)
1632 {
1633         int j, zero = 0;
1634
1635         /* Enable bus-mastering */
1636         zoran_set_pci_master(zr, 1);
1637
1638         /* Initialize the board */
1639         if (zr->card.init) {
1640                 zr->card.init(zr);
1641         }
1642
1643         j = zr->card.input[zr->input].muxsel;
1644
1645         decoder_command(zr, 0, NULL);
1646         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1647         decoder_command(zr, DECODER_SET_INPUT, &j);
1648
1649         encoder_command(zr, 0, NULL);
1650         encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1651         encoder_command(zr, ENCODER_SET_INPUT, &zero);
1652
1653         /* toggle JPEG codec sleep to sync PLL */
1654         jpeg_codec_sleep(zr, 1);
1655         jpeg_codec_sleep(zr, 0);
1656
1657         /* set individual interrupt enables (without GIRQ1)
1658          * but don't global enable until zoran_open() */
1659
1660         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1661         // It looks like using only JPEGRepIRQEn is not always reliable,
1662         // may be when JPEG codec crashes it won't generate IRQ? So,
1663          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1664             zr36057_init_vfe(zr);
1665
1666         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1667
1668         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1669 }
1670
1671 void
1672 zr36057_restart (struct zoran *zr)
1673 {
1674         btwrite(0, ZR36057_SPGPPCR);
1675         mdelay(1);
1676         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1677         mdelay(1);
1678
1679         /* assert P_Reset */
1680         btwrite(0, ZR36057_JPC);
1681         /* set up GPIO direction - all output */
1682         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1683
1684         /* set up GPIO pins and guest bus timing */
1685         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1686 }
1687
1688 /*
1689  * initialize video front end
1690  */
1691
1692 static void
1693 zr36057_init_vfe (struct zoran *zr)
1694 {
1695         u32 reg;
1696
1697         reg = btread(ZR36057_VFESPFR);
1698         reg |= ZR36057_VFESPFR_LittleEndian;
1699         reg &= ~ZR36057_VFESPFR_VCLKPol;
1700         reg |= ZR36057_VFESPFR_ExtFl;
1701         reg |= ZR36057_VFESPFR_TopField;
1702         btwrite(reg, ZR36057_VFESPFR);
1703         reg = btread(ZR36057_VDCR);
1704         if (pci_pci_problems & PCIPCI_TRITON)
1705                 // || zr->revision < 1) // Revision 1 has also Triton support
1706                 reg &= ~ZR36057_VDCR_Triton;
1707         else
1708                 reg |= ZR36057_VDCR_Triton;
1709         btwrite(reg, ZR36057_VDCR);
1710 }
1711
1712 /*
1713  * Interface to decoder and encoder chips using i2c bus
1714  */
1715
1716 int
1717 decoder_command (struct zoran *zr,
1718                  int           cmd,
1719                  void         *data)
1720 {
1721         if (zr->decoder == NULL)
1722                 return -EIO;
1723
1724         if (zr->card.type == LML33 &&
1725             (cmd == DECODER_SET_NORM || cmd == DECODER_SET_INPUT)) {
1726                 int res;
1727
1728                 // Bt819 needs to reset its FIFO buffer using #FRST pin and
1729                 // LML33 card uses GPIO(7) for that.
1730                 GPIO(zr, 7, 0);
1731                 res = zr->decoder->driver->command(zr->decoder, cmd, data);
1732                 // Pull #FRST high.
1733                 GPIO(zr, 7, 1);
1734                 return res;
1735         } else
1736                 return zr->decoder->driver->command(zr->decoder, cmd,
1737                                                     data);
1738 }
1739
1740 int
1741 encoder_command (struct zoran *zr,
1742                  int           cmd,
1743                  void         *data)
1744 {
1745         if (zr->encoder == NULL)
1746                 return -1;
1747
1748         return zr->encoder->driver->command(zr->encoder, cmd, data);
1749 }