kernel/drivers/media/pci/zoran/zoran_device.c

   1 /*
   2  * Zoran zr36057/zr36067 PCI controller driver, for the
   3  * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
   4  * Media Labs LML33/LML33R10.
   5  *
   6  * This part handles device access (PCI/I2C/codec/...)
   7  *
   8  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
   9  *
  10  * Currently maintained by:
  11  *   Ronald Bultje    <rbultje@ronald.bitfreak.net>
  12  *   Laurent Pinchart <laurent.pinchart@skynet.be>
  13  *   Mailinglist      <mjpeg-users@lists.sf.net>
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * 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/ktime.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/videodev2.h>
  41 #include <media/v4l2-common.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/sem.h>
  44
  45 #include <linux/pci.h>
  46 #include <linux/delay.h>
  47 #include <linux/wait.h>
  48
  49 #include <asm/byteorder.h>
  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 static bool lml33dpath;         /* default = 0
  62                                  * 1 will use digital path in capture
  63                                  * mode instead of analog. It can be
  64                                  * used for picture adjustments using
  65                                  * tool like xawtv while watching image
  66                                  * on TV monitor connected to the output.
  67                                  * However, due to absence of 75 Ohm
  68                                  * load on Bt819 input, there will be
  69                                  * some image imperfections */
  70
  71 module_param(lml33dpath, bool, 0644);
  72 MODULE_PARM_DESC(lml33dpath,
  73                  "Use digital path capture mode (on LML33 cards)");
  74
  75 static void
  76 zr36057_init_vfe (struct zoran *zr);
  77
  78 /*
  79  * General Purpose I/O and Guest bus access
  80  */
  81
  82 /*
  83  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  84  * GPIO bit number in the card_info structure is set to 0.
  85  */
  86
  87 void
  88 GPIO (struct zoran *zr,
  89       int           bit,
  90       unsigned int  value)
  91 {
  92         u32 reg;
  93         u32 mask;
  94
  95         /* Make sure the bit number is legal
  96          * A bit number of -1 (lacking) gives a mask of 0,
  97          * making it harmless */
  98         mask = (1 << (24 + bit)) & 0xff000000;
  99         reg = btread(ZR36057_GPPGCR1) & ~mask;
 100         if (value) {
 101                 reg |= mask;
 102         }
 103         btwrite(reg, ZR36057_GPPGCR1);
 104         udelay(1);
 105 }
 106
 107 /*
 108  * Wait til post office is no longer busy
 109  */
 110
 111 int
 112 post_office_wait (struct zoran *zr)
 113 {
 114         u32 por;
 115
 116 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 117         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 118                 /* wait for something to happen */
 119         }
 120         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 121                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 122                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 123                         por);
 124                 return -1;
 125         }
 126
 127         return 0;
 128 }
 129
 130 int
 131 post_office_write (struct zoran *zr,
 132                    unsigned int  guest,
 133                    unsigned int  reg,
 134                    unsigned int  value)
 135 {
 136         u32 por;
 137
 138         por =
 139             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 140             ((reg & 7) << 16) | (value & 0xFF);
 141         btwrite(por, ZR36057_POR);
 142
 143         return post_office_wait(zr);
 144 }
 145
 146 int
 147 post_office_read (struct zoran *zr,
 148                   unsigned int  guest,
 149                   unsigned int  reg)
 150 {
 151         u32 por;
 152
 153         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 154         btwrite(por, ZR36057_POR);
 155         if (post_office_wait(zr) < 0) {
 156                 return -1;
 157         }
 158
 159         return btread(ZR36057_POR) & 0xFF;
 160 }
 161
 162 /*
 163  * detect guests
 164  */
 165
 166 static void
 167 dump_guests (struct zoran *zr)
 168 {
 169         if (zr36067_debug > 2) {
 170                 int i, guest[8];
 171
 172                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 173                         guest[i] = post_office_read(zr, i, 0);
 174                 }
 175
 176                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 177
 178                 for (i = 1; i < 8; i++) {
 179                         printk(" 0x%02x", guest[i]);
 180                 }
 181                 printk("\n");
 182         }
 183 }
 184
 185 void
 186 detect_guest_activity (struct zoran *zr)
 187 {
 188         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 189         ktime_t t0, t1;
 190
 191         dump_guests(zr);
 192         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 193                ZR_DEVNAME(zr));
 194         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 195                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
 196         }
 197
 198         timeout = 0;
 199         j = 0;
 200         t0 = ktime_get();
 201         while (timeout < 10000) {
 202                 udelay(10);
 203                 timeout++;
 204                 for (i = 1; (i < 8) && (j < 8); i++) {
 205                         res = post_office_read(zr, i, 0);
 206                         if (res != guest[i]) {
 207                                 t1 = ktime_get();
 208                                 change[j][0] = ktime_to_us(ktime_sub(t1, t0));
 209                                 t0 = t1;
 210                                 change[j][1] = i;
 211                                 change[j][2] = res;
 212                                 j++;
 213                                 guest[i] = res;
 214                         }
 215                 }
 216                 if (j >= 8)
 217                         break;
 218         }
 219         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 220
 221         for (i = 1; i < 8; i++) {
 222                 printk(" 0x%02x", guest0[i]);
 223         }
 224         printk("\n");
 225         if (j == 0) {
 226                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 227                 return;
 228         }
 229         for (i = 0; i < j; i++) {
 230                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 231                        change[i][0], change[i][1], change[i][2]);
 232         }
 233 }
 234
 235 /*
 236  * JPEG Codec access
 237  */
 238
 239 void
 240 jpeg_codec_sleep (struct zoran *zr,
 241                   int           sleep)
 242 {
 243         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
 244         if (!sleep) {
 245                 dprintk(3,
 246                         KERN_DEBUG
 247                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 248                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 249                 udelay(500);
 250         } else {
 251                 dprintk(3,
 252                         KERN_DEBUG
 253                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 254                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 255                 udelay(2);
 256         }
 257 }
 258
 259 int
 260 jpeg_codec_reset (struct zoran *zr)
 261 {
 262         /* Take the codec out of sleep */
 263         jpeg_codec_sleep(zr, 0);
 264
 265         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 266                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 267                                   0);
 268                 udelay(2);
 269         } else {
 270                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
 271                 udelay(2);
 272                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
 273                 udelay(2);
 274         }
 275
 276         return 0;
 277 }
 278
 279 /*
 280  *   Set the registers for the size we have specified. Don't bother
 281  *   trying to understand this without the ZR36057 manual in front of
 282  *   you [AC].
 283  *
 284  *   PS: The manual is free for download in .pdf format from
 285  *   www.zoran.com - nicely done those folks.
 286  */
 287
 288 static void
 289 zr36057_adjust_vfe (struct zoran          *zr,
 290                     enum zoran_codec_mode  mode)
 291 {
 292         u32 reg;
 293
 294         switch (mode) {
 295         case BUZ_MODE_MOTION_DECOMPRESS:
 296                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 297                 reg = btread(ZR36057_VFEHCR);
 298                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 299                         reg += ((1 << 10) | 1);
 300                 }
 301                 btwrite(reg, ZR36057_VFEHCR);
 302                 break;
 303         case BUZ_MODE_MOTION_COMPRESS:
 304         case BUZ_MODE_IDLE:
 305         default:
 306                 if ((zr->norm & V4L2_STD_NTSC) ||
 307                     (zr->card.type == LML33R10 &&
 308                      (zr->norm & V4L2_STD_PAL)))
 309                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 310                 else
 311                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 312                 reg = btread(ZR36057_VFEHCR);
 313                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 314                         reg -= ((1 << 10) | 1);
 315                 }
 316                 btwrite(reg, ZR36057_VFEHCR);
 317                 break;
 318         }
 319 }
 320
 321 /*
 322  * set geometry
 323  */
 324
 325 static void
 326 zr36057_set_vfe (struct zoran              *zr,
 327                  int                        video_width,
 328                  int                        video_height,
 329                  const struct zoran_format *format)
 330 {
 331         struct tvnorm *tvn;
 332         unsigned HStart, HEnd, VStart, VEnd;
 333         unsigned DispMode;
 334         unsigned VidWinWid, VidWinHt;
 335         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 336         unsigned Wa, We, Ha, He;
 337         unsigned X, Y, HorDcm, VerDcm;
 338         u32 reg;
 339         unsigned mask_line_size;
 340
 341         tvn = zr->timing;
 342
 343         Wa = tvn->Wa;
 344         Ha = tvn->Ha;
 345
 346         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 347                 ZR_DEVNAME(zr), video_width, video_height);
 348
 349         if (video_width < BUZ_MIN_WIDTH ||
 350             video_height < BUZ_MIN_HEIGHT ||
 351             video_width > Wa || video_height > Ha) {
 352                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 353                         ZR_DEVNAME(zr), video_width, video_height);
 354                 return;
 355         }
 356
 357         /**** zr36057 ****/
 358
 359         /* horizontal */
 360         VidWinWid = video_width;
 361         X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
 362         We = (VidWinWid * 64) / X;
 363         HorDcm = 64 - X;
 364         hcrop1 = 2 * ((tvn->Wa - We) / 4);
 365         hcrop2 = tvn->Wa - We - hcrop1;
 366         HStart = tvn->HStart ? tvn->HStart : 1;
 367         /* (Ronald) Original comment:
 368          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 369          * this is false. It inverses chroma values on the LML33R10 (so Cr
 370          * suddenly is shown as Cb and reverse, really cool effect if you
 371          * want to see blue faces, not useful otherwise). So don't use |1.
 372          * However, the DC10 has '0' as HStart, but does need |1, so we
 373          * use a dirty check...
 374          */
 375         HEnd = HStart + tvn->Wa - 1;
 376         HStart += hcrop1;
 377         HEnd -= hcrop2;
 378         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 379             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 380         if (zr->card.vfe_pol.hsync_pol)
 381                 reg |= ZR36057_VFEHCR_HSPol;
 382         btwrite(reg, ZR36057_VFEHCR);
 383
 384         /* Vertical */
 385         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 386         VidWinHt = DispMode ? video_height : video_height / 2;
 387         Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
 388         He = (VidWinHt * 64) / Y;
 389         VerDcm = 64 - Y;
 390         vcrop1 = (tvn->Ha / 2 - He) / 2;
 391         vcrop2 = tvn->Ha / 2 - He - vcrop1;
 392         VStart = tvn->VStart;
 393         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 394         VStart += vcrop1;
 395         VEnd -= vcrop2;
 396         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 397             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 398         if (zr->card.vfe_pol.vsync_pol)
 399                 reg |= ZR36057_VFEVCR_VSPol;
 400         btwrite(reg, ZR36057_VFEVCR);
 401
 402         /* scaler and pixel format */
 403         reg = 0;
 404         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 405         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 406         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 407         /* RJ: I don't know, why the following has to be the opposite
 408          * of the corresponding ZR36060 setting, but only this way
 409          * we get the correct colors when uncompressing to the screen  */
 410         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 411         /* RJ: Don't know if that is needed for NTSC also */
 412         if (!(zr->norm & V4L2_STD_NTSC))
 413                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 414         reg |= ZR36057_VFESPFR_TopField;
 415         if (HorDcm >= 48) {
 416                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 417         } else if (HorDcm >= 32) {
 418                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 419         } else if (HorDcm >= 16) {
 420                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 421         }
 422         reg |= format->vfespfr;
 423         btwrite(reg, ZR36057_VFESPFR);
 424
 425         /* display configuration */
 426         reg = (16 << ZR36057_VDCR_MinPix)
 427             | (VidWinHt << ZR36057_VDCR_VidWinHt)
 428             | (VidWinWid << ZR36057_VDCR_VidWinWid);
 429         if (pci_pci_problems & PCIPCI_TRITON)
 430                 // || zr->revision < 1) // Revision 1 has also Triton support
 431                 reg &= ~ZR36057_VDCR_Triton;
 432         else
 433                 reg |= ZR36057_VDCR_Triton;
 434         btwrite(reg, ZR36057_VDCR);
 435
 436         /* (Ronald) don't write this if overlay_mask = NULL */
 437         if (zr->overlay_mask) {
 438                 /* Write overlay clipping mask data, but don't enable overlay clipping */
 439                 /* RJ: since this makes only sense on the screen, we use
 440                  * zr->overlay_settings.width instead of video_width */
 441
 442                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 443                 reg = virt_to_bus(zr->overlay_mask);
 444                 btwrite(reg, ZR36057_MMTR);
 445                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 446                 btwrite(reg, ZR36057_MMBR);
 447                 reg =
 448                     mask_line_size - (zr->overlay_settings.width +
 449                                       31) / 32;
 450                 if (DispMode == 0)
 451                         reg += mask_line_size;
 452                 reg <<= ZR36057_OCR_MaskStride;
 453                 btwrite(reg, ZR36057_OCR);
 454         }
 455
 456         zr36057_adjust_vfe(zr, zr->codec_mode);
 457 }
 458
 459 /*
 460  * Switch overlay on or off
 461  */
 462
 463 void
 464 zr36057_overlay (struct zoran *zr,
 465                  int           on)
 466 {
 467         u32 reg;
 468
 469         if (on) {
 470                 /* do the necessary settings ... */
 471                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 472
 473                 zr36057_set_vfe(zr,
 474                                 zr->overlay_settings.width,
 475                                 zr->overlay_settings.height,
 476                                 zr->overlay_settings.format);
 477
 478                 /* Start and length of each line MUST be 4-byte aligned.
 479                  * This should be already checked before the call to this routine.
 480                  * All error messages are internal driver checking only! */
 481
 482                 /* video display top and bottom registers */
 483                 reg = (long) zr->vbuf_base +
 484                     zr->overlay_settings.x *
 485                     ((zr->overlay_settings.format->depth + 7) / 8) +
 486                     zr->overlay_settings.y *
 487                     zr->vbuf_bytesperline;
 488                 btwrite(reg, ZR36057_VDTR);
 489                 if (reg & 3)
 490                         dprintk(1,
 491                                 KERN_ERR
 492                                 "%s: zr36057_overlay() - video_address not aligned\n",
 493                                 ZR_DEVNAME(zr));
 494                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 495                         reg += zr->vbuf_bytesperline;
 496                 btwrite(reg, ZR36057_VDBR);
 497
 498                 /* video stride, status, and frame grab register */
 499                 reg = zr->vbuf_bytesperline -
 500                     zr->overlay_settings.width *
 501                     ((zr->overlay_settings.format->depth + 7) / 8);
 502                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 503                         reg += zr->vbuf_bytesperline;
 504                 if (reg & 3)
 505                         dprintk(1,
 506                                 KERN_ERR
 507                                 "%s: zr36057_overlay() - video_stride not aligned\n",
 508                                 ZR_DEVNAME(zr));
 509                 reg = (reg << ZR36057_VSSFGR_DispStride);
 510                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 511                 btwrite(reg, ZR36057_VSSFGR);
 512
 513                 /* Set overlay clipping */
 514                 if (zr->overlay_settings.clipcount > 0)
 515                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 516
 517                 /* ... and switch it on */
 518                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 519         } else {
 520                 /* Switch it off */
 521                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 522         }
 523 }
 524
 525 /*
 526  * The overlay mask has one bit for each pixel on a scan line,
 527  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 528  */
 529
 530 void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
 531 {
 532         struct zoran *zr = fh->zr;
 533         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 534         u32 *mask;
 535         int x, y, width, height;
 536         unsigned i, j, k;
 537
 538         /* fill mask with one bits */
 539         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 540
 541         for (i = 0; i < count; ++i) {
 542                 /* pick up local copy of clip */
 543                 x = vp[i].c.left;
 544                 y = vp[i].c.top;
 545                 width = vp[i].c.width;
 546                 height = vp[i].c.height;
 547
 548                 /* trim clips that extend beyond the window */
 549                 if (x < 0) {
 550                         width += x;
 551                         x = 0;
 552                 }
 553                 if (y < 0) {
 554                         height += y;
 555                         y = 0;
 556                 }
 557                 if (x + width > fh->overlay_settings.width) {
 558                         width = fh->overlay_settings.width - x;
 559                 }
 560                 if (y + height > fh->overlay_settings.height) {
 561                         height = fh->overlay_settings.height - y;
 562                 }
 563
 564                 /* ignore degenerate clips */
 565                 if (height <= 0) {
 566                         continue;
 567                 }
 568                 if (width <= 0) {
 569                         continue;
 570                 }
 571
 572                 /* apply clip for each scan line */
 573                 for (j = 0; j < height; ++j) {
 574                         /* reset bit for each pixel */
 575                         /* this can be optimized later if need be */
 576                         mask = fh->overlay_mask + (y + j) * mask_line_size;
 577                         for (k = 0; k < width; ++k) {
 578                                 mask[(x + k) / 32] &=
 579                                     ~((u32) 1 << (x + k) % 32);
 580                         }
 581                 }
 582         }
 583 }
 584
 585 /* Enable/Disable uncompressed memory grabbing of the 36057 */
 586
 587 void
 588 zr36057_set_memgrab (struct zoran *zr,
 589                      int           mode)
 590 {
 591         if (mode) {
 592                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 593                  * means a capture is already in progress, but FrameGrab==1
 594                  * doesn't necessary mean that.  It's more correct to say a 1
 595                  * to 0 transition indicates a capture completed.  If a
 596                  * capture is pending when capturing is tuned off, FrameGrab
 597                  * will be stuck at 1 until capturing is turned back on.
 598                  */
 599                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 600                         dprintk(1,
 601                                 KERN_WARNING
 602                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 603                                 ZR_DEVNAME(zr));
 604
 605                 /* switch on VSync interrupts */
 606                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 607                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 608
 609                 /* enable SnapShot */
 610                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 611
 612                 /* Set zr36057 video front end  and enable video */
 613                 zr36057_set_vfe(zr, zr->v4l_settings.width,
 614                                 zr->v4l_settings.height,
 615                                 zr->v4l_settings.format);
 616
 617                 zr->v4l_memgrab_active = 1;
 618         } else {
 619                 /* switch off VSync interrupts */
 620                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 621
 622                 zr->v4l_memgrab_active = 0;
 623                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 624
 625                 /* reenable grabbing to screen if it was running */
 626                 if (zr->v4l_overlay_active) {
 627                         zr36057_overlay(zr, 1);
 628                 } else {
 629                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 630                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 631                 }
 632         }
 633 }
 634
 635 int
 636 wait_grab_pending (struct zoran *zr)
 637 {
 638         unsigned long flags;
 639
 640         /* wait until all pending grabs are finished */
 641
 642         if (!zr->v4l_memgrab_active)
 643                 return 0;
 644
 645         wait_event_interruptible(zr->v4l_capq,
 646                         (zr->v4l_pend_tail == zr->v4l_pend_head));
 647         if (signal_pending(current))
 648                 return -ERESTARTSYS;
 649
 650         spin_lock_irqsave(&zr->spinlock, flags);
 651         zr36057_set_memgrab(zr, 0);
 652         spin_unlock_irqrestore(&zr->spinlock, flags);
 653
 654         return 0;
 655 }
 656
 657 /*****************************************************************************
 658  *                                                                           *
 659  *  Set up the Buz-specific MJPEG part                                       *
 660  *                                                                           *
 661  *****************************************************************************/
 662
 663 static inline void
 664 set_frame (struct zoran *zr,
 665            int           val)
 666 {
 667         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
 668 }
 669
 670 static void
 671 set_videobus_dir (struct zoran *zr,
 672                   int           val)
 673 {
 674         switch (zr->card.type) {
 675         case LML33:
 676         case LML33R10:
 677                 if (!lml33dpath)
 678                         GPIO(zr, 5, val);
 679                 else
 680                         GPIO(zr, 5, 1);
 681                 break;
 682         default:
 683                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
 684                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
 685                 break;
 686         }
 687 }
 688
 689 static void
 690 init_jpeg_queue (struct zoran *zr)
 691 {
 692         int i;
 693
 694         /* re-initialize DMA ring stuff */
 695         zr->jpg_que_head = 0;
 696         zr->jpg_dma_head = 0;
 697         zr->jpg_dma_tail = 0;
 698         zr->jpg_que_tail = 0;
 699         zr->jpg_seq_num = 0;
 700         zr->JPEG_error = 0;
 701         zr->num_errors = 0;
 702         zr->jpg_err_seq = 0;
 703         zr->jpg_err_shift = 0;
 704         zr->jpg_queued_num = 0;
 705         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 706                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 707         }
 708         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 709                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 710         }
 711 }
 712
 713 static void
 714 zr36057_set_jpg (struct zoran          *zr,
 715                  enum zoran_codec_mode  mode)
 716 {
 717         struct tvnorm *tvn;
 718         u32 reg;
 719
 720         tvn = zr->timing;
 721
 722         /* assert P_Reset, disable code transfer, deassert Active */
 723         btwrite(0, ZR36057_JPC);
 724
 725         /* MJPEG compression mode */
 726         switch (mode) {
 727
 728         case BUZ_MODE_MOTION_COMPRESS:
 729         default:
 730                 reg = ZR36057_JMC_MJPGCmpMode;
 731                 break;
 732
 733         case BUZ_MODE_MOTION_DECOMPRESS:
 734                 reg = ZR36057_JMC_MJPGExpMode;
 735                 reg |= ZR36057_JMC_SyncMstr;
 736                 /* RJ: The following is experimental - improves the output to screen */
 737                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 738                 break;
 739
 740         case BUZ_MODE_STILL_COMPRESS:
 741                 reg = ZR36057_JMC_JPGCmpMode;
 742                 break;
 743
 744         case BUZ_MODE_STILL_DECOMPRESS:
 745                 reg = ZR36057_JMC_JPGExpMode;
 746                 break;
 747
 748         }
 749         reg |= ZR36057_JMC_JPG;
 750         if (zr->jpg_settings.field_per_buff == 1)
 751                 reg |= ZR36057_JMC_Fld_per_buff;
 752         btwrite(reg, ZR36057_JMC);
 753
 754         /* vertical */
 755         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 756         reg = (6 << ZR36057_VSP_VsyncSize) |
 757               (tvn->Ht << ZR36057_VSP_FrmTot);
 758         btwrite(reg, ZR36057_VSP);
 759         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 760               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 761         btwrite(reg, ZR36057_FVAP);
 762
 763         /* horizontal */
 764         if (zr->card.vfe_pol.hsync_pol)
 765                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 766         else
 767                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 768         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 769               (tvn->Wt << ZR36057_HSP_LineTot);
 770         btwrite(reg, ZR36057_HSP);
 771         reg = ((zr->jpg_settings.img_x +
 772                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 773               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 774         btwrite(reg, ZR36057_FHAP);
 775
 776         /* field process parameters */
 777         if (zr->jpg_settings.odd_even)
 778                 reg = ZR36057_FPP_Odd_Even;
 779         else
 780                 reg = 0;
 781
 782         btwrite(reg, ZR36057_FPP);
 783
 784         /* Set proper VCLK Polarity, else colors will be wrong during playback */
 785         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 786
 787         /* code base address */
 788         reg = virt_to_bus(zr->stat_com);
 789         btwrite(reg, ZR36057_JCBA);
 790
 791         /* FIFO threshold (FIFO is 160. double words) */
 792         /* NOTE: decimal values here */
 793         switch (mode) {
 794
 795         case BUZ_MODE_STILL_COMPRESS:
 796         case BUZ_MODE_MOTION_COMPRESS:
 797                 if (zr->card.type != BUZ)
 798                         reg = 140;
 799                 else
 800                         reg = 60;
 801                 break;
 802
 803         case BUZ_MODE_STILL_DECOMPRESS:
 804         case BUZ_MODE_MOTION_DECOMPRESS:
 805                 reg = 20;
 806                 break;
 807
 808         default:
 809                 reg = 80;
 810                 break;
 811
 812         }
 813         btwrite(reg, ZR36057_JCFT);
 814         zr36057_adjust_vfe(zr, mode);
 815
 816 }
 817
 818 void
 819 print_interrupts (struct zoran *zr)
 820 {
 821         int res, noerr = 0;
 822
 823         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 824         if ((res = zr->field_counter) < -1 || res > 1) {
 825                 printk(" FD:%d", res);
 826         }
 827         if ((res = zr->intr_counter_GIRQ1) != 0) {
 828                 printk(" GIRQ1:%d", res);
 829                 noerr++;
 830         }
 831         if ((res = zr->intr_counter_GIRQ0) != 0) {
 832                 printk(" GIRQ0:%d", res);
 833                 noerr++;
 834         }
 835         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 836                 printk(" CodRepIRQ:%d", res);
 837                 noerr++;
 838         }
 839         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 840                 printk(" JPEGRepIRQ:%d", res);
 841                 noerr++;
 842         }
 843         if (zr->JPEG_max_missed) {
 844                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 845                        zr->JPEG_min_missed);
 846         }
 847         if (zr->END_event_missed) {
 848                 printk(" ENDs missed: %d", zr->END_event_missed);
 849         }
 850         //if (zr->jpg_queued_num) {
 851         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 852                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 853         //}
 854         if (!noerr) {
 855                 printk(": no interrupts detected.");
 856         }
 857         printk("\n");
 858 }
 859
 860 void
 861 clear_interrupt_counters (struct zoran *zr)
 862 {
 863         zr->intr_counter_GIRQ1 = 0;
 864         zr->intr_counter_GIRQ0 = 0;
 865         zr->intr_counter_CodRepIRQ = 0;
 866         zr->intr_counter_JPEGRepIRQ = 0;
 867         zr->field_counter = 0;
 868         zr->IRQ1_in = 0;
 869         zr->IRQ1_out = 0;
 870         zr->JPEG_in = 0;
 871         zr->JPEG_out = 0;
 872         zr->JPEG_0 = 0;
 873         zr->JPEG_1 = 0;
 874         zr->END_event_missed = 0;
 875         zr->JPEG_missed = 0;
 876         zr->JPEG_max_missed = 0;
 877         zr->JPEG_min_missed = 0x7fffffff;
 878 }
 879
 880 static u32
 881 count_reset_interrupt (struct zoran *zr)
 882 {
 883         u32 isr;
 884
 885         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 886                 if (isr & ZR36057_ISR_GIRQ1) {
 887                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 888                         zr->intr_counter_GIRQ1++;
 889                 }
 890                 if (isr & ZR36057_ISR_GIRQ0) {
 891                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 892                         zr->intr_counter_GIRQ0++;
 893                 }
 894                 if (isr & ZR36057_ISR_CodRepIRQ) {
 895                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 896                         zr->intr_counter_CodRepIRQ++;
 897                 }
 898                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
 899                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 900                         zr->intr_counter_JPEGRepIRQ++;
 901                 }
 902         }
 903         return isr;
 904 }
 905
 906 void
 907 jpeg_start (struct zoran *zr)
 908 {
 909         int reg;
 910
 911         zr->frame_num = 0;
 912
 913         /* deassert P_reset, disable code transfer, deassert Active */
 914         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 915         /* stop flushing the internal code buffer */
 916         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 917         /* enable code transfer */
 918         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 919
 920         /* clear IRQs */
 921         btwrite(IRQ_MASK, ZR36057_ISR);
 922         /* enable the JPEG IRQs */
 923         btwrite(zr->card.jpeg_int |
 924                         ZR36057_ICR_JPEGRepIRQ |
 925                         ZR36057_ICR_IntPinEn,
 926                 ZR36057_ICR);
 927
 928         set_frame(zr, 0);       // \FRAME
 929
 930         /* set the JPEG codec guest ID */
 931         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 932                (0 << ZR36057_JCGI_JPEGuestReg);
 933         btwrite(reg, ZR36057_JCGI);
 934
 935         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 936             zr->card.video_codec == CODEC_TYPE_ZR36050) {
 937                 /* Enable processing on the ZR36016 */
 938                 if (zr->vfe)
 939                         zr36016_write(zr->vfe, 0, 1);
 940
 941                 /* load the address of the GO register in the ZR36050 latch */
 942                 post_office_write(zr, 0, 0, 0);
 943         }
 944
 945         /* assert Active */
 946         btor(ZR36057_JPC_Active, ZR36057_JPC);
 947
 948         /* enable the Go generation */
 949         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 950         udelay(30);
 951
 952         set_frame(zr, 1);       // /FRAME
 953
 954         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 955 }
 956
 957 void
 958 zr36057_enable_jpg (struct zoran          *zr,
 959                     enum zoran_codec_mode  mode)
 960 {
 961         struct vfe_settings cap;
 962         int field_size =
 963             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 964
 965         zr->codec_mode = mode;
 966
 967         cap.x = zr->jpg_settings.img_x;
 968         cap.y = zr->jpg_settings.img_y;
 969         cap.width = zr->jpg_settings.img_width;
 970         cap.height = zr->jpg_settings.img_height;
 971         cap.decimation =
 972             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
 973         cap.quality = zr->jpg_settings.jpg_comp.quality;
 974
 975         switch (mode) {
 976
 977         case BUZ_MODE_MOTION_COMPRESS: {
 978                 struct jpeg_app_marker app;
 979                 struct jpeg_com_marker com;
 980
 981                 /* In motion compress mode, the decoder output must be enabled, and
 982                  * the video bus direction set to input.
 983                  */
 984                 set_videobus_dir(zr, 0);
 985                 decoder_call(zr, video, s_stream, 1);
 986                 encoder_call(zr, video, s_routing, 0, 0, 0);
 987
 988                 /* Take the JPEG codec and the VFE out of sleep */
 989                 jpeg_codec_sleep(zr, 0);
 990
 991                 /* set JPEG app/com marker */
 992                 app.appn = zr->jpg_settings.jpg_comp.APPn;
 993                 app.len = zr->jpg_settings.jpg_comp.APP_len;
 994                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
 995                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
 996                                    sizeof(struct jpeg_app_marker), &app);
 997
 998                 com.len = zr->jpg_settings.jpg_comp.COM_len;
 999                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1000                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1001                                    sizeof(struct jpeg_com_marker), &com);
1002
1003                 /* Setup the JPEG codec */
1004                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1005                                    sizeof(int), &field_size);
1006                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1007                                      &zr->card.vfe_pol);
1008                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1009
1010                 /* Setup the VFE */
1011                 if (zr->vfe) {
1012                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1013                                          sizeof(int), &field_size);
1014                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1015                                            &zr->card.vfe_pol);
1016                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1017                 }
1018
1019                 init_jpeg_queue(zr);
1020                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1021
1022                 clear_interrupt_counters(zr);
1023                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1024                         ZR_DEVNAME(zr));
1025                 break;
1026         }
1027
1028         case BUZ_MODE_MOTION_DECOMPRESS:
1029                 /* In motion decompression mode, the decoder output must be disabled, and
1030                  * the video bus direction set to output.
1031                  */
1032                 decoder_call(zr, video, s_stream, 0);
1033                 set_videobus_dir(zr, 1);
1034                 encoder_call(zr, video, s_routing, 1, 0, 0);
1035
1036                 /* Take the JPEG codec and the VFE out of sleep */
1037                 jpeg_codec_sleep(zr, 0);
1038                 /* Setup the VFE */
1039                 if (zr->vfe) {
1040                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1041                                            &zr->card.vfe_pol);
1042                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1043                 }
1044                 /* Setup the JPEG codec */
1045                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1046                                      &zr->card.vfe_pol);
1047                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1048
1049                 init_jpeg_queue(zr);
1050                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1051
1052                 clear_interrupt_counters(zr);
1053                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1054                         ZR_DEVNAME(zr));
1055                 break;
1056
1057         case BUZ_MODE_IDLE:
1058         default:
1059                 /* shut down processing */
1060                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1061                       ZR36057_ICR);
1062                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1063                         ZR36057_ISR);
1064                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1065
1066                 msleep(50);
1067
1068                 set_videobus_dir(zr, 0);
1069                 set_frame(zr, 1);       // /FRAME
1070                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1071                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1072                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1073                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1074                 jpeg_codec_reset(zr);
1075                 jpeg_codec_sleep(zr, 1);
1076                 zr36057_adjust_vfe(zr, mode);
1077
1078                 decoder_call(zr, video, s_stream, 1);
1079                 encoder_call(zr, video, s_routing, 0, 0, 0);
1080
1081                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1082                 break;
1083
1084         }
1085 }
1086
1087 /* when this is called the spinlock must be held */
1088 void
1089 zoran_feed_stat_com (struct zoran *zr)
1090 {
1091         /* move frames from pending queue to DMA */
1092
1093         int frame, i, max_stat_com;
1094
1095         max_stat_com =
1096             (zr->jpg_settings.TmpDcm ==
1097              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1098
1099         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1100                zr->jpg_dma_head < zr->jpg_que_head) {
1101
1102                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1103                 if (zr->jpg_settings.TmpDcm == 1) {
1104                         /* fill 1 stat_com entry */
1105                         i = (zr->jpg_dma_head -
1106                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1107                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1108                                 break;
1109                         zr->stat_com[i] =
1110                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1111                 } else {
1112                         /* fill 2 stat_com entries */
1113                         i = ((zr->jpg_dma_head -
1114                               zr->jpg_err_shift) & 1) * 2;
1115                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1116                                 break;
1117                         zr->stat_com[i] =
1118                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1119                         zr->stat_com[i + 1] =
1120                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1121                 }
1122                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1123                 zr->jpg_dma_head++;
1124
1125         }
1126         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1127                 zr->jpg_queued_num++;
1128 }
1129
1130 /* when this is called the spinlock must be held */
1131 static void
1132 zoran_reap_stat_com (struct zoran *zr)
1133 {
1134         /* move frames from DMA queue to done queue */
1135
1136         int i;
1137         u32 stat_com;
1138         unsigned int seq;
1139         unsigned int dif;
1140         struct zoran_buffer *buffer;
1141         int frame;
1142
1143         /* In motion decompress we don't have a hardware frame counter,
1144          * we just count the interrupts here */
1145
1146         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1147                 zr->jpg_seq_num++;
1148         }
1149         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1150                 if (zr->jpg_settings.TmpDcm == 1)
1151                         i = (zr->jpg_dma_tail -
1152                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1153                 else
1154                         i = ((zr->jpg_dma_tail -
1155                               zr->jpg_err_shift) & 1) * 2 + 1;
1156
1157                 stat_com = le32_to_cpu(zr->stat_com[i]);
1158
1159                 if ((stat_com & 1) == 0) {
1160                         return;
1161                 }
1162                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1163                 buffer = &zr->jpg_buffers.buffer[frame];
1164                 v4l2_get_timestamp(&buffer->bs.timestamp);
1165
1166                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1167                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1168
1169                         /* update sequence number with the help of the counter in stat_com */
1170
1171                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1172                         dif = (seq - zr->jpg_seq_num) & 0xff;
1173                         zr->jpg_seq_num += dif;
1174                 } else {
1175                         buffer->bs.length = 0;
1176                 }
1177                 buffer->bs.seq =
1178                     zr->jpg_settings.TmpDcm ==
1179                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1180                 buffer->state = BUZ_STATE_DONE;
1181
1182                 zr->jpg_dma_tail++;
1183         }
1184 }
1185
1186 static void zoran_restart(struct zoran *zr)
1187 {
1188         /* Now the stat_comm buffer is ready for restart */
1189         unsigned int status = 0;
1190         int mode;
1191
1192         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1193                 decoder_call(zr, video, g_input_status, &status);
1194                 mode = CODEC_DO_COMPRESSION;
1195         } else {
1196                 status = V4L2_IN_ST_NO_SIGNAL;
1197                 mode = CODEC_DO_EXPANSION;
1198         }
1199         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1200             !(status & V4L2_IN_ST_NO_SIGNAL)) {
1201                 /********** RESTART code *************/
1202                 jpeg_codec_reset(zr);
1203                 zr->codec->set_mode(zr->codec, mode);
1204                 zr36057_set_jpg(zr, zr->codec_mode);
1205                 jpeg_start(zr);
1206
1207                 if (zr->num_errors <= 8)
1208                         dprintk(2, KERN_INFO "%s: Restart\n",
1209                                 ZR_DEVNAME(zr));
1210
1211                 zr->JPEG_missed = 0;
1212                 zr->JPEG_error = 2;
1213                 /********** End RESTART code ***********/
1214         }
1215 }
1216
1217 static void
1218 error_handler (struct zoran *zr,
1219                u32           astat,
1220                u32           stat)
1221 {
1222         int i;
1223
1224         /* This is JPEG error handling part */
1225         if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1226             zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1227                 return;
1228         }
1229
1230         if ((stat & 1) == 0 &&
1231             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1232             zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1233                 /* No free buffers... */
1234                 zoran_reap_stat_com(zr);
1235                 zoran_feed_stat_com(zr);
1236                 wake_up_interruptible(&zr->jpg_capq);
1237                 zr->JPEG_missed = 0;
1238                 return;
1239         }
1240
1241         if (zr->JPEG_error == 1) {
1242                 zoran_restart(zr);
1243                 return;
1244         }
1245
1246         /*
1247          * First entry: error just happened during normal operation
1248          *
1249          * In BUZ_MODE_MOTION_COMPRESS:
1250          *
1251          * Possible glitch in TV signal. In this case we should
1252          * stop the codec and wait for good quality signal before
1253          * restarting it to avoid further problems
1254          *
1255          * In BUZ_MODE_MOTION_DECOMPRESS:
1256          *
1257          * Bad JPEG frame: we have to mark it as processed (codec crashed
1258          * and was not able to do it itself), and to remove it from queue.
1259          */
1260         btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1261         udelay(1);
1262         stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1263         btwrite(0, ZR36057_JPC);
1264         btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1265         jpeg_codec_reset(zr);
1266         jpeg_codec_sleep(zr, 1);
1267         zr->JPEG_error = 1;
1268         zr->num_errors++;
1269
1270         /* Report error */
1271         if (zr36067_debug > 1 && zr->num_errors <= 8) {
1272                 long frame;
1273                 int j;
1274
1275                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1276                 printk(KERN_ERR
1277                        "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1278                        ZR_DEVNAME(zr), stat, zr->last_isr,
1279                        zr->jpg_que_tail, zr->jpg_dma_tail,
1280                        zr->jpg_dma_head, zr->jpg_que_head,
1281                        zr->jpg_seq_num, frame);
1282                 printk(KERN_INFO "stat_com frames:");
1283                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1284                         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1285                                 if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1286                                         printk(KERN_CONT "% d->%d", j, i);
1287                         }
1288                 }
1289                 printk(KERN_CONT "\n");
1290         }
1291         /* Find an entry in stat_com and rotate contents */
1292         if (zr->jpg_settings.TmpDcm == 1)
1293                 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1294         else
1295                 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1296         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1297                 /* Mimic zr36067 operation */
1298                 zr->stat_com[i] |= cpu_to_le32(1);
1299                 if (zr->jpg_settings.TmpDcm != 1)
1300                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1301                 /* Refill */
1302                 zoran_reap_stat_com(zr);
1303                 zoran_feed_stat_com(zr);
1304                 wake_up_interruptible(&zr->jpg_capq);
1305                 /* Find an entry in stat_com again after refill */
1306                 if (zr->jpg_settings.TmpDcm == 1)
1307                         i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1308                 else
1309                         i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1310         }
1311         if (i) {
1312                 /* Rotate stat_comm entries to make current entry first */
1313                 int j;
1314                 __le32 bus_addr[BUZ_NUM_STAT_COM];
1315
1316                 /* Here we are copying the stat_com array, which
1317                  * is already in little endian format, so
1318                  * no endian conversions here
1319                  */
1320                 memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1321
1322                 for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1323                         zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
1324
1325                 zr->jpg_err_shift += i;
1326                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1327         }
1328         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1329                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1330         zoran_restart(zr);
1331 }
1332
1333 irqreturn_t
1334 zoran_irq (int             irq,
1335            void           *dev_id)
1336 {
1337         u32 stat, astat;
1338         int count;
1339         struct zoran *zr;
1340         unsigned long flags;
1341
1342         zr = dev_id;
1343         count = 0;
1344
1345         if (zr->testing) {
1346                 /* Testing interrupts */
1347                 spin_lock_irqsave(&zr->spinlock, flags);
1348                 while ((stat = count_reset_interrupt(zr))) {
1349                         if (count++ > 100) {
1350                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1351                                 dprintk(1,
1352                                         KERN_ERR
1353                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1354                                         ZR_DEVNAME(zr), stat);
1355                                 wake_up_interruptible(&zr->test_q);
1356                         }
1357                 }
1358                 zr->last_isr = stat;
1359                 spin_unlock_irqrestore(&zr->spinlock, flags);
1360                 return IRQ_HANDLED;
1361         }
1362
1363         spin_lock_irqsave(&zr->spinlock, flags);
1364         while (1) {
1365                 /* get/clear interrupt status bits */
1366                 stat = count_reset_interrupt(zr);
1367                 astat = stat & IRQ_MASK;
1368                 if (!astat) {
1369                         break;
1370                 }
1371                 dprintk(4,
1372                         KERN_DEBUG
1373                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1374                         astat, btread(ZR36057_ICR));
1375                 if (astat & zr->card.vsync_int) {       // SW
1376
1377                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1378                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1379                                 /* count missed interrupts */
1380                                 zr->JPEG_missed++;
1381                         }
1382                         //post_office_read(zr,1,0);
1383                         /* Interrupts may still happen when
1384                          * zr->v4l_memgrab_active is switched off.
1385                          * We simply ignore them */
1386
1387                         if (zr->v4l_memgrab_active) {
1388                                 /* A lot more checks should be here ... */
1389                                 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1390                                         dprintk(1,
1391                                                 KERN_WARNING
1392                                                 "%s: BuzIRQ with SnapShot off ???\n",
1393                                                 ZR_DEVNAME(zr));
1394
1395                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1396                                         /* There is a grab on a frame going on, check if it has finished */
1397                                         if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1398                                                 /* it is finished, notify the user */
1399
1400                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1401                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1402                                                 v4l2_get_timestamp(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1403                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1404                                                 zr->v4l_pend_tail++;
1405                                         }
1406                                 }
1407
1408                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1409                                         wake_up_interruptible(&zr->v4l_capq);
1410
1411                                 /* Check if there is another grab queued */
1412
1413                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1414                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1415                                         int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1416                                         u32 reg;
1417
1418                                         zr->v4l_grab_frame = frame;
1419
1420                                         /* Set zr36057 video front end and enable video */
1421
1422                                         /* Buffer address */
1423
1424                                         reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1425                                         btwrite(reg, ZR36057_VDTR);
1426                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1427                                                 reg += zr->v4l_settings.bytesperline;
1428                                         btwrite(reg, ZR36057_VDBR);
1429
1430                                         /* video stride, status, and frame grab register */
1431                                         reg = 0;
1432                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1433                                                 reg += zr->v4l_settings.bytesperline;
1434                                         reg = (reg << ZR36057_VSSFGR_DispStride);
1435                                         reg |= ZR36057_VSSFGR_VidOvf;
1436                                         reg |= ZR36057_VSSFGR_SnapShot;
1437                                         reg |= ZR36057_VSSFGR_FrameGrab;
1438                                         btwrite(reg, ZR36057_VSSFGR);
1439
1440                                         btor(ZR36057_VDCR_VidEn,
1441                                              ZR36057_VDCR);
1442                                 }
1443                         }
1444
1445                         /* even if we don't grab, we do want to increment
1446                          * the sequence counter to see lost frames */
1447                         zr->v4l_grab_seq++;
1448                 }
1449 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1450                 if (astat & ZR36057_ISR_CodRepIRQ) {
1451                         zr->intr_counter_CodRepIRQ++;
1452                         IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1453                                 ZR_DEVNAME(zr)));
1454                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1455                 }
1456 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1457
1458 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1459                 if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1460                     (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1461                      zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1462                         if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1463                                 char sv[BUZ_NUM_STAT_COM + 1];
1464                                 int i;
1465
1466                                 printk(KERN_INFO
1467                                        "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1468                                        ZR_DEVNAME(zr), stat,
1469                                        zr->jpg_settings.odd_even,
1470                                        zr->jpg_settings.field_per_buff,
1471                                        zr->JPEG_missed);
1472
1473                                 for (i = 0; i < BUZ_NUM_STAT_COM; i++)
1474                                         sv[i] = le32_to_cpu(zr->stat_com[i]) & 1 ? '1' : '0';
1475                                 sv[BUZ_NUM_STAT_COM] = 0;
1476                                 printk(KERN_INFO
1477                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1478                                        ZR_DEVNAME(zr), sv,
1479                                        zr->jpg_que_tail,
1480                                        zr->jpg_dma_tail,
1481                                        zr->jpg_dma_head,
1482                                        zr->jpg_que_head);
1483                         } else {
1484                                 /* Get statistics */
1485                                 if (zr->JPEG_missed > zr->JPEG_max_missed)
1486                                         zr->JPEG_max_missed = zr->JPEG_missed;
1487                                 if (zr->JPEG_missed < zr->JPEG_min_missed)
1488                                         zr->JPEG_min_missed = zr->JPEG_missed;
1489                         }
1490
1491                         if (zr36067_debug > 2 && zr->frame_num < 6) {
1492                                 int i;
1493
1494                                 printk(KERN_INFO "%s: seq=%ld stat_com:",
1495                                        ZR_DEVNAME(zr), zr->jpg_seq_num);
1496                                 for (i = 0; i < 4; i++) {
1497                                         printk(KERN_CONT " %08x",
1498                                                le32_to_cpu(zr->stat_com[i]));
1499                                 }
1500                                 printk(KERN_CONT "\n");
1501                         }
1502                         zr->frame_num++;
1503                         zr->JPEG_missed = 0;
1504                         zr->JPEG_error = 0;
1505                         zoran_reap_stat_com(zr);
1506                         zoran_feed_stat_com(zr);
1507                         wake_up_interruptible(&zr->jpg_capq);
1508                 }
1509 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1510
1511                 /* DATERR, too many fields missed, error processing */
1512                 if ((astat & zr->card.jpeg_int) ||
1513                     zr->JPEG_missed > 25 ||
1514                     zr->JPEG_error == 1 ||
1515                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1516                      (zr->frame_num && (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1517                         error_handler(zr, astat, stat);
1518                 }
1519
1520                 count++;
1521                 if (count > 10) {
1522                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1523                                 ZR_DEVNAME(zr), count);
1524                         if (count > 20) {
1525                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1526                                 dprintk(2,
1527                                         KERN_ERR
1528                                         "%s: IRQ lockup, cleared int mask\n",
1529                                         ZR_DEVNAME(zr));
1530                                 break;
1531                         }
1532                 }
1533                 zr->last_isr = stat;
1534         }
1535         spin_unlock_irqrestore(&zr->spinlock, flags);
1536
1537         return IRQ_HANDLED;
1538 }
1539
1540 void
1541 zoran_set_pci_master (struct zoran *zr,
1542                       int           set_master)
1543 {
1544         if (set_master) {
1545                 pci_set_master(zr->pci_dev);
1546         } else {
1547                 u16 command;
1548
1549                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1550                 command &= ~PCI_COMMAND_MASTER;
1551                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1552         }
1553 }
1554
1555 void
1556 zoran_init_hardware (struct zoran *zr)
1557 {
1558         /* Enable bus-mastering */
1559         zoran_set_pci_master(zr, 1);
1560
1561         /* Initialize the board */
1562         if (zr->card.init) {
1563                 zr->card.init(zr);
1564         }
1565
1566         decoder_call(zr, core, init, 0);
1567         decoder_call(zr, video, s_std, zr->norm);
1568         decoder_call(zr, video, s_routing,
1569                 zr->card.input[zr->input].muxsel, 0, 0);
1570
1571         encoder_call(zr, core, init, 0);
1572         encoder_call(zr, video, s_std_output, zr->norm);
1573         encoder_call(zr, video, s_routing, 0, 0, 0);
1574
1575         /* toggle JPEG codec sleep to sync PLL */
1576         jpeg_codec_sleep(zr, 1);
1577         jpeg_codec_sleep(zr, 0);
1578
1579         /*
1580          * set individual interrupt enables (without GIRQ1)
1581          * but don't global enable until zoran_open()
1582          */
1583         zr36057_init_vfe(zr);
1584
1585         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1586
1587         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1588 }
1589
1590 void
1591 zr36057_restart (struct zoran *zr)
1592 {
1593         btwrite(0, ZR36057_SPGPPCR);
1594         mdelay(1);
1595         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1596         mdelay(1);
1597
1598         /* assert P_Reset */
1599         btwrite(0, ZR36057_JPC);
1600         /* set up GPIO direction - all output */
1601         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1602
1603         /* set up GPIO pins and guest bus timing */
1604         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1605 }
1606
1607 /*
1608  * initialize video front end
1609  */
1610
1611 static void
1612 zr36057_init_vfe (struct zoran *zr)
1613 {
1614         u32 reg;
1615
1616         reg = btread(ZR36057_VFESPFR);
1617         reg |= ZR36057_VFESPFR_LittleEndian;
1618         reg &= ~ZR36057_VFESPFR_VCLKPol;
1619         reg |= ZR36057_VFESPFR_ExtFl;
1620         reg |= ZR36057_VFESPFR_TopField;
1621         btwrite(reg, ZR36057_VFESPFR);
1622         reg = btread(ZR36057_VDCR);
1623         if (pci_pci_problems & PCIPCI_TRITON)
1624                 // || zr->revision < 1) // Revision 1 has also Triton support
1625                 reg &= ~ZR36057_VDCR_Triton;
1626         else
1627                 reg |= ZR36057_VDCR_Triton;
1628         btwrite(reg, ZR36057_VDCR);
1629 }