linux/drivers/media/video/zoran_device.c
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   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
  61extern const struct zoran_format zoran_formats[];
  62
  63static int lml33dpath = 0;      /* 1 will use digital path in capture
  64                                 * mode instead of analog. It can be
  65                                 * used for picture adjustments using
  66                                 * tool like xawtv while watching image
  67                                 * on TV monitor connected to the output.
  68                                 * However, due to absence of 75 Ohm
  69                                 * load on Bt819 input, there will be
  70                                 * some image imperfections */
  71
  72module_param(lml33dpath, bool, 0644);
  73MODULE_PARM_DESC(lml33dpath,
  74                 "Use digital path capture mode (on LML33 cards)");
  75
  76static void
  77zr36057_init_vfe (struct zoran *zr);
  78
  79/*
  80 * General Purpose I/O and Guest bus access
  81 */
  82
  83/*
  84 * This is a bit tricky. When a board lacks a GPIO function, the corresponding
  85 * GPIO bit number in the card_info structure is set to 0.
  86 */
  87
  88void
  89GPIO (struct zoran *zr,
  90      int           bit,
  91      unsigned int  value)
  92{
  93        u32 reg;
  94        u32 mask;
  95
  96        /* Make sure the bit number is legal
  97         * A bit number of -1 (lacking) gives a mask of 0,
  98         * making it harmless */
  99        mask = (1 << (24 + bit)) & 0xff000000;
 100        reg = btread(ZR36057_GPPGCR1) & ~mask;
 101        if (value) {
 102                reg |= mask;
 103        }
 104        btwrite(reg, ZR36057_GPPGCR1);
 105        udelay(1);
 106}
 107
 108/*
 109 * Wait til post office is no longer busy
 110 */
 111
 112int
 113post_office_wait (struct zoran *zr)
 114{
 115        u32 por;
 116
 117//      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
 118        while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
 119                /* wait for something to happen */
 120        }
 121        if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
 122                /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
 123                dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
 124                        por);
 125                return -1;
 126        }
 127
 128        return 0;
 129}
 130
 131int
 132post_office_write (struct zoran *zr,
 133                   unsigned int  guest,
 134                   unsigned int  reg,
 135                   unsigned int  value)
 136{
 137        u32 por;
 138
 139        por =
 140            ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
 141            ((reg & 7) << 16) | (value & 0xFF);
 142        btwrite(por, ZR36057_POR);
 143
 144        return post_office_wait(zr);
 145}
 146
 147int
 148post_office_read (struct zoran *zr,
 149                  unsigned int  guest,
 150                  unsigned int  reg)
 151{
 152        u32 por;
 153
 154        por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
 155        btwrite(por, ZR36057_POR);
 156        if (post_office_wait(zr) < 0) {
 157                return -1;
 158        }
 159
 160        return btread(ZR36057_POR) & 0xFF;
 161}
 162
 163/*
 164 * detect guests
 165 */
 166
 167static void
 168dump_guests (struct zoran *zr)
 169{
 170        if (zr36067_debug > 2) {
 171                int i, guest[8];
 172
 173                for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 174                        guest[i] = post_office_read(zr, i, 0);
 175                }
 176
 177                printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 178
 179                for (i = 1; i < 8; i++) {
 180                        printk(" 0x%02x", guest[i]);
 181                }
 182                printk("\n");
 183        }
 184}
 185
 186static inline unsigned long
 187get_time (void)
 188{
 189        struct timeval tv;
 190
 191        do_gettimeofday(&tv);
 192        return (1000000 * tv.tv_sec + tv.tv_usec);
 193}
 194
 195void
 196detect_guest_activity (struct zoran *zr)
 197{
 198        int timeout, i, j, res, guest[8], guest0[8], change[8][3];
 199        unsigned long t0, t1;
 200
 201        dump_guests(zr);
 202        printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
 203               ZR_DEVNAME(zr));
 204        for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
 205                guest0[i] = guest[i] = post_office_read(zr, i, 0);
 206        }
 207
 208        timeout = 0;
 209        j = 0;
 210        t0 = get_time();
 211        while (timeout < 10000) {
 212                udelay(10);
 213                timeout++;
 214                for (i = 1; (i < 8) && (j < 8); i++) {
 215                        res = post_office_read(zr, i, 0);
 216                        if (res != guest[i]) {
 217                                t1 = get_time();
 218                                change[j][0] = (t1 - t0);
 219                                t0 = t1;
 220                                change[j][1] = i;
 221                                change[j][2] = res;
 222                                j++;
 223                                guest[i] = res;
 224                        }
 225                }
 226                if (j >= 8)
 227                        break;
 228        }
 229        printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
 230
 231        for (i = 1; i < 8; i++) {
 232                printk(" 0x%02x", guest0[i]);
 233        }
 234        printk("\n");
 235        if (j == 0) {
 236                printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
 237                return;
 238        }
 239        for (i = 0; i < j; i++) {
 240                printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
 241                       change[i][0], change[i][1], change[i][2]);
 242        }
 243}
 244
 245/*
 246 * JPEG Codec access
 247 */
 248
 249void
 250jpeg_codec_sleep (struct zoran *zr,
 251                  int           sleep)
 252{
 253        GPIO(zr, zr->card.gpio[GPIO_JPEG_SLEEP], !sleep);
 254        if (!sleep) {
 255                dprintk(3,
 256                        KERN_DEBUG
 257                        "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
 258                        ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 259                udelay(500);
 260        } else {
 261                dprintk(3,
 262                        KERN_DEBUG
 263                        "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
 264                        ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
 265                udelay(2);
 266        }
 267}
 268
 269int
 270jpeg_codec_reset (struct zoran *zr)
 271{
 272        /* Take the codec out of sleep */
 273        jpeg_codec_sleep(zr, 0);
 274
 275        if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
 276                post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
 277                                  0);
 278                udelay(2);
 279        } else {
 280                GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 0);
 281                udelay(2);
 282                GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 1);
 283                udelay(2);
 284        }
 285
 286        return 0;
 287}
 288
 289/*
 290 *   Set the registers for the size we have specified. Don't bother
 291 *   trying to understand this without the ZR36057 manual in front of
 292 *   you [AC].
 293 *
 294 *   PS: The manual is free for download in .pdf format from
 295 *   www.zoran.com - nicely done those folks.
 296 */
 297
 298static void
 299zr36057_adjust_vfe (struct zoran          *zr,
 300                    enum zoran_codec_mode  mode)
 301{
 302        u32 reg;
 303
 304        switch (mode) {
 305        case BUZ_MODE_MOTION_DECOMPRESS:
 306                btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 307                reg = btread(ZR36057_VFEHCR);
 308                if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
 309                        reg += ((1 << 10) | 1);
 310                }
 311                btwrite(reg, ZR36057_VFEHCR);
 312                break;
 313        case BUZ_MODE_MOTION_COMPRESS:
 314        case BUZ_MODE_IDLE:
 315        default:
 316                if (zr->norm == VIDEO_MODE_NTSC ||
 317                    (zr->card.type == LML33R10 &&
 318                     zr->norm == VIDEO_MODE_PAL))
 319                        btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 320                else
 321                        btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
 322                reg = btread(ZR36057_VFEHCR);
 323                if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
 324                        reg -= ((1 << 10) | 1);
 325                }
 326                btwrite(reg, ZR36057_VFEHCR);
 327                break;
 328        }
 329}
 330
 331/*
 332 * set geometry
 333 */
 334
 335static void
 336zr36057_set_vfe (struct zoran              *zr,
 337                 int                        video_width,
 338                 int                        video_height,
 339                 const struct zoran_format *format)
 340{
 341        struct tvnorm *tvn;
 342        unsigned HStart, HEnd, VStart, VEnd;
 343        unsigned DispMode;
 344        unsigned VidWinWid, VidWinHt;
 345        unsigned hcrop1, hcrop2, vcrop1, vcrop2;
 346        unsigned Wa, We, Ha, He;
 347        unsigned X, Y, HorDcm, VerDcm;
 348        u32 reg;
 349        unsigned mask_line_size;
 350
 351        tvn = zr->timing;
 352
 353        Wa = tvn->Wa;
 354        Ha = tvn->Ha;
 355
 356        dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
 357                ZR_DEVNAME(zr), video_width, video_height);
 358
 359        if (zr->norm != VIDEO_MODE_PAL &&
 360            zr->norm != VIDEO_MODE_NTSC &&
 361            zr->norm != VIDEO_MODE_SECAM) {
 362                dprintk(1,
 363                        KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
 364                        ZR_DEVNAME(zr), zr->norm);
 365                return;
 366        }
 367        if (video_width < BUZ_MIN_WIDTH ||
 368            video_height < BUZ_MIN_HEIGHT ||
 369            video_width > Wa || video_height > Ha) {
 370                dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
 371                        ZR_DEVNAME(zr), video_width, video_height);
 372                return;
 373        }
 374
 375        /**** zr36057 ****/
 376
 377        /* horizontal */
 378        VidWinWid = video_width;
 379        X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
 380        We = (VidWinWid * 64) / X;
 381        HorDcm = 64 - X;
 382        hcrop1 = 2 * ((tvn->Wa - We) / 4);
 383        hcrop2 = tvn->Wa - We - hcrop1;
 384        HStart = tvn->HStart ? tvn->HStart : 1;
 385        /* (Ronald) Original comment:
 386         * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
 387         * this is false. It inverses chroma values on the LML33R10 (so Cr
 388         * suddenly is shown as Cb and reverse, really cool effect if you
 389         * want to see blue faces, not useful otherwise). So don't use |1.
 390         * However, the DC10 has '0' as HStart, but does need |1, so we
 391         * use a dirty check...
 392         */
 393        HEnd = HStart + tvn->Wa - 1;
 394        HStart += hcrop1;
 395        HEnd -= hcrop2;
 396        reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
 397            | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
 398        if (zr->card.vfe_pol.hsync_pol)
 399                reg |= ZR36057_VFEHCR_HSPol;
 400        btwrite(reg, ZR36057_VFEHCR);
 401
 402        /* Vertical */
 403        DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
 404        VidWinHt = DispMode ? video_height : video_height / 2;
 405        Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
 406        He = (VidWinHt * 64) / Y;
 407        VerDcm = 64 - Y;
 408        vcrop1 = (tvn->Ha / 2 - He) / 2;
 409        vcrop2 = tvn->Ha / 2 - He - vcrop1;
 410        VStart = tvn->VStart;
 411        VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
 412        VStart += vcrop1;
 413        VEnd -= vcrop2;
 414        reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
 415            | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
 416        if (zr->card.vfe_pol.vsync_pol)
 417                reg |= ZR36057_VFEVCR_VSPol;
 418        btwrite(reg, ZR36057_VFEVCR);
 419
 420        /* scaler and pixel format */
 421        reg = 0;
 422        reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
 423        reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
 424        reg |= (DispMode << ZR36057_VFESPFR_DispMode);
 425        /* RJ: I don't know, why the following has to be the opposite
 426         * of the corresponding ZR36060 setting, but only this way
 427         * we get the correct colors when uncompressing to the screen  */
 428        //reg |= ZR36057_VFESPFR_VCLKPol; /**/
 429        /* RJ: Don't know if that is needed for NTSC also */
 430        if (zr->norm != VIDEO_MODE_NTSC)
 431                reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
 432        reg |= ZR36057_VFESPFR_TopField;
 433        if (HorDcm >= 48) {
 434                reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
 435        } else if (HorDcm >= 32) {
 436                reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
 437        } else if (HorDcm >= 16) {
 438                reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
 439        }
 440        reg |= format->vfespfr;
 441        btwrite(reg, ZR36057_VFESPFR);
 442
 443        /* display configuration */
 444        reg = (16 << ZR36057_VDCR_MinPix)
 445            | (VidWinHt << ZR36057_VDCR_VidWinHt)
 446            | (VidWinWid << ZR36057_VDCR_VidWinWid);
 447        if (pci_pci_problems & PCIPCI_TRITON)
 448                // || zr->revision < 1) // Revision 1 has also Triton support
 449                reg &= ~ZR36057_VDCR_Triton;
 450        else
 451                reg |= ZR36057_VDCR_Triton;
 452        btwrite(reg, ZR36057_VDCR);
 453
 454        /* (Ronald) don't write this if overlay_mask = NULL */
 455        if (zr->overlay_mask) {
 456                /* Write overlay clipping mask data, but don't enable overlay clipping */
 457                /* RJ: since this makes only sense on the screen, we use
 458                 * zr->overlay_settings.width instead of video_width */
 459
 460                mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 461                reg = virt_to_bus(zr->overlay_mask);
 462                btwrite(reg, ZR36057_MMTR);
 463                reg = virt_to_bus(zr->overlay_mask + mask_line_size);
 464                btwrite(reg, ZR36057_MMBR);
 465                reg =
 466                    mask_line_size - (zr->overlay_settings.width +
 467                                      31) / 32;
 468                if (DispMode == 0)
 469                        reg += mask_line_size;
 470                reg <<= ZR36057_OCR_MaskStride;
 471                btwrite(reg, ZR36057_OCR);
 472        }
 473
 474        zr36057_adjust_vfe(zr, zr->codec_mode);
 475}
 476
 477/*
 478 * Switch overlay on or off
 479 */
 480
 481void
 482zr36057_overlay (struct zoran *zr,
 483                 int           on)
 484{
 485        u32 reg;
 486
 487        if (on) {
 488                /* do the necessary settings ... */
 489                btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
 490
 491                zr36057_set_vfe(zr,
 492                                zr->overlay_settings.width,
 493                                zr->overlay_settings.height,
 494                                zr->overlay_settings.format);
 495
 496                /* Start and length of each line MUST be 4-byte aligned.
 497                 * This should be allready checked before the call to this routine.
 498                 * All error messages are internal driver checking only! */
 499
 500                /* video display top and bottom registers */
 501                reg = (long) zr->buffer.base +
 502                    zr->overlay_settings.x *
 503                    ((zr->overlay_settings.format->depth + 7) / 8) +
 504                    zr->overlay_settings.y *
 505                    zr->buffer.bytesperline;
 506                btwrite(reg, ZR36057_VDTR);
 507                if (reg & 3)
 508                        dprintk(1,
 509                                KERN_ERR
 510                                "%s: zr36057_overlay() - video_address not aligned\n",
 511                                ZR_DEVNAME(zr));
 512                if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 513                        reg += zr->buffer.bytesperline;
 514                btwrite(reg, ZR36057_VDBR);
 515
 516                /* video stride, status, and frame grab register */
 517                reg = zr->buffer.bytesperline -
 518                    zr->overlay_settings.width *
 519                    ((zr->overlay_settings.format->depth + 7) / 8);
 520                if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
 521                        reg += zr->buffer.bytesperline;
 522                if (reg & 3)
 523                        dprintk(1,
 524                                KERN_ERR
 525                                "%s: zr36057_overlay() - video_stride not aligned\n",
 526                                ZR_DEVNAME(zr));
 527                reg = (reg << ZR36057_VSSFGR_DispStride);
 528                reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
 529                btwrite(reg, ZR36057_VSSFGR);
 530
 531                /* Set overlay clipping */
 532                if (zr->overlay_settings.clipcount > 0)
 533                        btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
 534
 535                /* ... and switch it on */
 536                btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
 537        } else {
 538                /* Switch it off */
 539                btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 540        }
 541}
 542
 543/*
 544 * The overlay mask has one bit for each pixel on a scan line,
 545 *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
 546 */
 547
 548void
 549write_overlay_mask (struct file       *file,
 550                    struct video_clip *vp,
 551                    int                count)
 552{
 553        struct zoran_fh *fh = file->private_data;
 554        struct zoran *zr = fh->zr;
 555        unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
 556        u32 *mask;
 557        int x, y, width, height;
 558        unsigned i, j, k;
 559        u32 reg;
 560
 561        /* fill mask with one bits */
 562        memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
 563        reg = 0;
 564
 565        for (i = 0; i < count; ++i) {
 566                /* pick up local copy of clip */
 567                x = vp[i].x;
 568                y = vp[i].y;
 569                width = vp[i].width;
 570                height = vp[i].height;
 571
 572                /* trim clips that extend beyond the window */
 573                if (x < 0) {
 574                        width += x;
 575                        x = 0;
 576                }
 577                if (y < 0) {
 578                        height += y;
 579                        y = 0;
 580                }
 581                if (x + width > fh->overlay_settings.width) {
 582                        width = fh->overlay_settings.width - x;
 583                }
 584                if (y + height > fh->overlay_settings.height) {
 585                        height = fh->overlay_settings.height - y;
 586                }
 587
 588                /* ignore degenerate clips */
 589                if (height <= 0) {
 590                        continue;
 591                }
 592                if (width <= 0) {
 593                        continue;
 594                }
 595
 596                /* apply clip for each scan line */
 597                for (j = 0; j < height; ++j) {
 598                        /* reset bit for each pixel */
 599                        /* this can be optimized later if need be */
 600                        mask = fh->overlay_mask + (y + j) * mask_line_size;
 601                        for (k = 0; k < width; ++k) {
 602                                mask[(x + k) / 32] &=
 603                                    ~((u32) 1 << (x + k) % 32);
 604                        }
 605                }
 606        }
 607}
 608
 609/* Enable/Disable uncompressed memory grabbing of the 36057 */
 610
 611void
 612zr36057_set_memgrab (struct zoran *zr,
 613                     int           mode)
 614{
 615        if (mode) {
 616                /* We only check SnapShot and not FrameGrab here.  SnapShot==1
 617                 * means a capture is already in progress, but FrameGrab==1
 618                 * doesn't necessary mean that.  It's more correct to say a 1
 619                 * to 0 transition indicates a capture completed.  If a
 620                 * capture is pending when capturing is tuned off, FrameGrab
 621                 * will be stuck at 1 until capturing is turned back on.
 622                 */
 623                if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
 624                        dprintk(1,
 625                                KERN_WARNING
 626                                "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
 627                                ZR_DEVNAME(zr));
 628
 629                /* switch on VSync interrupts */
 630                btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
 631                btor(zr->card.vsync_int, ZR36057_ICR);  // SW
 632
 633                /* enable SnapShot */
 634                btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 635
 636                /* Set zr36057 video front end  and enable video */
 637                zr36057_set_vfe(zr, zr->v4l_settings.width,
 638                                zr->v4l_settings.height,
 639                                zr->v4l_settings.format);
 640
 641                zr->v4l_memgrab_active = 1;
 642        } else {
 643                /* switch off VSync interrupts */
 644                btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
 645
 646                zr->v4l_memgrab_active = 0;
 647                zr->v4l_grab_frame = NO_GRAB_ACTIVE;
 648
 649                /* reenable grabbing to screen if it was running */
 650                if (zr->v4l_overlay_active) {
 651                        zr36057_overlay(zr, 1);
 652                } else {
 653                        btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
 654                        btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
 655                }
 656        }
 657}
 658
 659int
 660wait_grab_pending (struct zoran *zr)
 661{
 662        unsigned long flags;
 663
 664        /* wait until all pending grabs are finished */
 665
 666        if (!zr->v4l_memgrab_active)
 667                return 0;
 668
 669        wait_event_interruptible(zr->v4l_capq,
 670                        (zr->v4l_pend_tail == zr->v4l_pend_head));
 671        if (signal_pending(current))
 672                return -ERESTARTSYS;
 673
 674        spin_lock_irqsave(&zr->spinlock, flags);
 675        zr36057_set_memgrab(zr, 0);
 676        spin_unlock_irqrestore(&zr->spinlock, flags);
 677
 678        return 0;
 679}
 680
 681/*****************************************************************************
 682 *                                                                           *
 683 *  Set up the Buz-specific MJPEG part                                       *
 684 *                                                                           *
 685 *****************************************************************************/
 686
 687static inline void
 688set_frame (struct zoran *zr,
 689           int           val)
 690{
 691        GPIO(zr, zr->card.gpio[GPIO_JPEG_FRAME], val);
 692}
 693
 694static void
 695set_videobus_dir (struct zoran *zr,
 696                  int           val)
 697{
 698        switch (zr->card.type) {
 699        case LML33:
 700        case LML33R10:
 701                if (lml33dpath == 0)
 702                        GPIO(zr, 5, val);
 703                else
 704                        GPIO(zr, 5, 1);
 705                break;
 706        default:
 707                GPIO(zr, zr->card.gpio[GPIO_VID_DIR],
 708                     zr->card.gpio_pol[GPIO_VID_DIR] ? !val : val);
 709                break;
 710        }
 711}
 712
 713static void
 714init_jpeg_queue (struct zoran *zr)
 715{
 716        int i;
 717
 718        /* re-initialize DMA ring stuff */
 719        zr->jpg_que_head = 0;
 720        zr->jpg_dma_head = 0;
 721        zr->jpg_dma_tail = 0;
 722        zr->jpg_que_tail = 0;
 723        zr->jpg_seq_num = 0;
 724        zr->JPEG_error = 0;
 725        zr->num_errors = 0;
 726        zr->jpg_err_seq = 0;
 727        zr->jpg_err_shift = 0;
 728        zr->jpg_queued_num = 0;
 729        for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
 730                zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
 731        }
 732        for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
 733                zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
 734        }
 735}
 736
 737static void
 738zr36057_set_jpg (struct zoran          *zr,
 739                 enum zoran_codec_mode  mode)
 740{
 741        struct tvnorm *tvn;
 742        u32 reg;
 743
 744        tvn = zr->timing;
 745
 746        /* assert P_Reset, disable code transfer, deassert Active */
 747        btwrite(0, ZR36057_JPC);
 748
 749        /* MJPEG compression mode */
 750        switch (mode) {
 751
 752        case BUZ_MODE_MOTION_COMPRESS:
 753        default:
 754                reg = ZR36057_JMC_MJPGCmpMode;
 755                break;
 756
 757        case BUZ_MODE_MOTION_DECOMPRESS:
 758                reg = ZR36057_JMC_MJPGExpMode;
 759                reg |= ZR36057_JMC_SyncMstr;
 760                /* RJ: The following is experimental - improves the output to screen */
 761                //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
 762                break;
 763
 764        case BUZ_MODE_STILL_COMPRESS:
 765                reg = ZR36057_JMC_JPGCmpMode;
 766                break;
 767
 768        case BUZ_MODE_STILL_DECOMPRESS:
 769                reg = ZR36057_JMC_JPGExpMode;
 770                break;
 771
 772        }
 773        reg |= ZR36057_JMC_JPG;
 774        if (zr->jpg_settings.field_per_buff == 1)
 775                reg |= ZR36057_JMC_Fld_per_buff;
 776        btwrite(reg, ZR36057_JMC);
 777
 778        /* vertical */
 779        btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
 780        reg = (6 << ZR36057_VSP_VsyncSize) |
 781              (tvn->Ht << ZR36057_VSP_FrmTot);
 782        btwrite(reg, ZR36057_VSP);
 783        reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
 784              (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
 785        btwrite(reg, ZR36057_FVAP);
 786
 787        /* horizontal */
 788        if (zr->card.vfe_pol.hsync_pol)
 789                btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 790        else
 791                btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
 792        reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
 793              (tvn->Wt << ZR36057_HSP_LineTot);
 794        btwrite(reg, ZR36057_HSP);
 795        reg = ((zr->jpg_settings.img_x +
 796                tvn->HStart + 4) << ZR36057_FHAP_NAX) |
 797              (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
 798        btwrite(reg, ZR36057_FHAP);
 799
 800        /* field process parameters */
 801        if (zr->jpg_settings.odd_even)
 802                reg = ZR36057_FPP_Odd_Even;
 803        else
 804                reg = 0;
 805
 806        btwrite(reg, ZR36057_FPP);
 807
 808        /* Set proper VCLK Polarity, else colors will be wrong during playback */
 809        //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
 810
 811        /* code base address */
 812        reg = virt_to_bus(zr->stat_com);
 813        btwrite(reg, ZR36057_JCBA);
 814
 815        /* FIFO threshold (FIFO is 160. double words) */
 816        /* NOTE: decimal values here */
 817        switch (mode) {
 818
 819        case BUZ_MODE_STILL_COMPRESS:
 820        case BUZ_MODE_MOTION_COMPRESS:
 821                if (zr->card.type != BUZ)
 822                        reg = 140;
 823                else
 824                        reg = 60;
 825                break;
 826
 827        case BUZ_MODE_STILL_DECOMPRESS:
 828        case BUZ_MODE_MOTION_DECOMPRESS:
 829                reg = 20;
 830                break;
 831
 832        default:
 833                reg = 80;
 834                break;
 835
 836        }
 837        btwrite(reg, ZR36057_JCFT);
 838        zr36057_adjust_vfe(zr, mode);
 839
 840}
 841
 842void
 843print_interrupts (struct zoran *zr)
 844{
 845        int res, noerr = 0;
 846
 847        printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
 848        if ((res = zr->field_counter) < -1 || res > 1) {
 849                printk(" FD:%d", res);
 850        }
 851        if ((res = zr->intr_counter_GIRQ1) != 0) {
 852                printk(" GIRQ1:%d", res);
 853                noerr++;
 854        }
 855        if ((res = zr->intr_counter_GIRQ0) != 0) {
 856                printk(" GIRQ0:%d", res);
 857                noerr++;
 858        }
 859        if ((res = zr->intr_counter_CodRepIRQ) != 0) {
 860                printk(" CodRepIRQ:%d", res);
 861                noerr++;
 862        }
 863        if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
 864                printk(" JPEGRepIRQ:%d", res);
 865                noerr++;
 866        }
 867        if (zr->JPEG_max_missed) {
 868                printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
 869                       zr->JPEG_min_missed);
 870        }
 871        if (zr->END_event_missed) {
 872                printk(" ENDs missed: %d", zr->END_event_missed);
 873        }
 874        //if (zr->jpg_queued_num) {
 875        printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
 876               zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
 877        //}
 878        if (!noerr) {
 879                printk(": no interrupts detected.");
 880        }
 881        printk("\n");
 882}
 883
 884void
 885clear_interrupt_counters (struct zoran *zr)
 886{
 887        zr->intr_counter_GIRQ1 = 0;
 888        zr->intr_counter_GIRQ0 = 0;
 889        zr->intr_counter_CodRepIRQ = 0;
 890        zr->intr_counter_JPEGRepIRQ = 0;
 891        zr->field_counter = 0;
 892        zr->IRQ1_in = 0;
 893        zr->IRQ1_out = 0;
 894        zr->JPEG_in = 0;
 895        zr->JPEG_out = 0;
 896        zr->JPEG_0 = 0;
 897        zr->JPEG_1 = 0;
 898        zr->END_event_missed = 0;
 899        zr->JPEG_missed = 0;
 900        zr->JPEG_max_missed = 0;
 901        zr->JPEG_min_missed = 0x7fffffff;
 902}
 903
 904static u32
 905count_reset_interrupt (struct zoran *zr)
 906{
 907        u32 isr;
 908
 909        if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
 910                if (isr & ZR36057_ISR_GIRQ1) {
 911                        btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
 912                        zr->intr_counter_GIRQ1++;
 913                }
 914                if (isr & ZR36057_ISR_GIRQ0) {
 915                        btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
 916                        zr->intr_counter_GIRQ0++;
 917                }
 918                if (isr & ZR36057_ISR_CodRepIRQ) {
 919                        btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
 920                        zr->intr_counter_CodRepIRQ++;
 921                }
 922                if (isr & ZR36057_ISR_JPEGRepIRQ) {
 923                        btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
 924                        zr->intr_counter_JPEGRepIRQ++;
 925                }
 926        }
 927        return isr;
 928}
 929
 930/* hack */
 931extern void zr36016_write (struct videocodec *codec,
 932                           u16                reg,
 933                           u32                val);
 934
 935void
 936jpeg_start (struct zoran *zr)
 937{
 938        int reg;
 939
 940        zr->frame_num = 0;
 941
 942        /* deassert P_reset, disable code transfer, deassert Active */
 943        btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
 944        /* stop flushing the internal code buffer */
 945        btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
 946        /* enable code transfer */
 947        btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
 948
 949        /* clear IRQs */
 950        btwrite(IRQ_MASK, ZR36057_ISR);
 951        /* enable the JPEG IRQs */
 952        btwrite(zr->card.jpeg_int |
 953                        ZR36057_ICR_JPEGRepIRQ |
 954                        ZR36057_ICR_IntPinEn,
 955                ZR36057_ICR);
 956
 957        set_frame(zr, 0);       // \FRAME
 958
 959        /* set the JPEG codec guest ID */
 960        reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
 961               (0 << ZR36057_JCGI_JPEGuestReg);
 962        btwrite(reg, ZR36057_JCGI);
 963
 964        if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
 965            zr->card.video_codec == CODEC_TYPE_ZR36050) {
 966                /* Enable processing on the ZR36016 */
 967                if (zr->vfe)
 968                        zr36016_write(zr->vfe, 0, 1);
 969
 970                /* load the address of the GO register in the ZR36050 latch */
 971                post_office_write(zr, 0, 0, 0);
 972        }
 973
 974        /* assert Active */
 975        btor(ZR36057_JPC_Active, ZR36057_JPC);
 976
 977        /* enable the Go generation */
 978        btor(ZR36057_JMC_Go_en, ZR36057_JMC);
 979        udelay(30);
 980
 981        set_frame(zr, 1);       // /FRAME
 982
 983        dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
 984}
 985
 986void
 987zr36057_enable_jpg (struct zoran          *zr,
 988                    enum zoran_codec_mode  mode)
 989{
 990        static int zero = 0;
 991        static int one = 1;
 992        struct vfe_settings cap;
 993        int field_size =
 994            zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
 995
 996        zr->codec_mode = mode;
 997
 998        cap.x = zr->jpg_settings.img_x;
 999        cap.y = zr->jpg_settings.img_y;
1000        cap.width = zr->jpg_settings.img_width;
1001        cap.height = zr->jpg_settings.img_height;
1002        cap.decimation =
1003            zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
1004        cap.quality = zr->jpg_settings.jpg_comp.quality;
1005
1006        switch (mode) {
1007
1008        case BUZ_MODE_MOTION_COMPRESS: {
1009                struct jpeg_app_marker app;
1010                struct jpeg_com_marker com;
1011
1012                /* In motion compress mode, the decoder output must be enabled, and
1013                 * the video bus direction set to input.
1014                 */
1015                set_videobus_dir(zr, 0);
1016                decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1017                encoder_command(zr, ENCODER_SET_INPUT, &zero);
1018
1019                /* Take the JPEG codec and the VFE out of sleep */
1020                jpeg_codec_sleep(zr, 0);
1021
1022                /* set JPEG app/com marker */
1023                app.appn = zr->jpg_settings.jpg_comp.APPn;
1024                app.len = zr->jpg_settings.jpg_comp.APP_len;
1025                memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1026                zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1027                                   sizeof(struct jpeg_app_marker), &app);
1028
1029                com.len = zr->jpg_settings.jpg_comp.COM_len;
1030                memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1031                zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1032                                   sizeof(struct jpeg_com_marker), &com);
1033
1034                /* Setup the JPEG codec */
1035                zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1036                                   sizeof(int), &field_size);
1037                zr->codec->set_video(zr->codec, zr->timing, &cap,
1038                                     &zr->card.vfe_pol);
1039                zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1040
1041                /* Setup the VFE */
1042                if (zr->vfe) {
1043                        zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1044                                         sizeof(int), &field_size);
1045                        zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1046                                           &zr->card.vfe_pol);
1047                        zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1048                }
1049
1050                init_jpeg_queue(zr);
1051                zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1052
1053                clear_interrupt_counters(zr);
1054                dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1055                        ZR_DEVNAME(zr));
1056                break;
1057        }
1058
1059        case BUZ_MODE_MOTION_DECOMPRESS:
1060                /* In motion decompression mode, the decoder output must be disabled, and
1061                 * the video bus direction set to output.
1062                 */
1063                decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1064                set_videobus_dir(zr, 1);
1065                encoder_command(zr, ENCODER_SET_INPUT, &one);
1066
1067                /* Take the JPEG codec and the VFE out of sleep */
1068                jpeg_codec_sleep(zr, 0);
1069                /* Setup the VFE */
1070                if (zr->vfe) {
1071                        zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1072                                           &zr->card.vfe_pol);
1073                        zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1074                }
1075                /* Setup the JPEG codec */
1076                zr->codec->set_video(zr->codec, zr->timing, &cap,
1077                                     &zr->card.vfe_pol);
1078                zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1079
1080                init_jpeg_queue(zr);
1081                zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1082
1083                clear_interrupt_counters(zr);
1084                dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1085                        ZR_DEVNAME(zr));
1086                break;
1087
1088        case BUZ_MODE_IDLE:
1089        default:
1090                /* shut down processing */
1091                btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1092                      ZR36057_ICR);
1093                btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1094                        ZR36057_ISR);
1095                btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1096
1097                msleep(50);
1098
1099                set_videobus_dir(zr, 0);
1100                set_frame(zr, 1);       // /FRAME
1101                btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1102                btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1103                btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1104                btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1105                jpeg_codec_reset(zr);
1106                jpeg_codec_sleep(zr, 1);
1107                zr36057_adjust_vfe(zr, mode);
1108
1109                decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1110                encoder_command(zr, ENCODER_SET_INPUT, &zero);
1111
1112                dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1113                break;
1114
1115        }
1116}
1117
1118/* when this is called the spinlock must be held */
1119void
1120zoran_feed_stat_com (struct zoran *zr)
1121{
1122        /* move frames from pending queue to DMA */
1123
1124        int frame, i, max_stat_com;
1125
1126        max_stat_com =
1127            (zr->jpg_settings.TmpDcm ==
1128             1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1129
1130        while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1131               zr->jpg_dma_head < zr->jpg_que_head) {
1132
1133                frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1134                if (zr->jpg_settings.TmpDcm == 1) {
1135                        /* fill 1 stat_com entry */
1136                        i = (zr->jpg_dma_head -
1137                             zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1138                        if (!(zr->stat_com[i] & cpu_to_le32(1)))
1139                                break;
1140                        zr->stat_com[i] =
1141                            cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1142                } else {
1143                        /* fill 2 stat_com entries */
1144                        i = ((zr->jpg_dma_head -
1145                              zr->jpg_err_shift) & 1) * 2;
1146                        if (!(zr->stat_com[i] & cpu_to_le32(1)))
1147                                break;
1148                        zr->stat_com[i] =
1149                            cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1150                        zr->stat_com[i + 1] =
1151                            cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1152                }
1153                zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1154                zr->jpg_dma_head++;
1155
1156        }
1157        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1158                zr->jpg_queued_num++;
1159}
1160
1161/* when this is called the spinlock must be held */
1162static void
1163zoran_reap_stat_com (struct zoran *zr)
1164{
1165        /* move frames from DMA queue to done queue */
1166
1167        int i;
1168        u32 stat_com;
1169        unsigned int seq;
1170        unsigned int dif;
1171        struct zoran_jpg_buffer *buffer;
1172        int frame;
1173
1174        /* In motion decompress we don't have a hardware frame counter,
1175         * we just count the interrupts here */
1176
1177        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1178                zr->jpg_seq_num++;
1179        }
1180        while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1181                if (zr->jpg_settings.TmpDcm == 1)
1182                        i = (zr->jpg_dma_tail -
1183                             zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1184                else
1185                        i = ((zr->jpg_dma_tail -
1186                              zr->jpg_err_shift) & 1) * 2 + 1;
1187
1188                stat_com = le32_to_cpu(zr->stat_com[i]);
1189
1190                if ((stat_com & 1) == 0) {
1191                        return;
1192                }
1193                frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1194                buffer = &zr->jpg_buffers.buffer[frame];
1195                do_gettimeofday(&buffer->bs.timestamp);
1196
1197                if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1198                        buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1199
1200                        /* update sequence number with the help of the counter in stat_com */
1201
1202                        seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1203                        dif = (seq - zr->jpg_seq_num) & 0xff;
1204                        zr->jpg_seq_num += dif;
1205                } else {
1206                        buffer->bs.length = 0;
1207                }
1208                buffer->bs.seq =
1209                    zr->jpg_settings.TmpDcm ==
1210                    2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1211                buffer->state = BUZ_STATE_DONE;
1212
1213                zr->jpg_dma_tail++;
1214        }
1215}
1216
1217static void
1218error_handler (struct zoran *zr,
1219               u32           astat,
1220               u32           stat)
1221{
1222        /* This is JPEG error handling part */
1223        if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1224            (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1225                //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1226                return;
1227        }
1228
1229        if ((stat & 1) == 0 &&
1230            zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1231            zr->jpg_dma_tail - zr->jpg_que_tail >=
1232             zr->jpg_buffers.num_buffers) {
1233                /* No free buffers... */
1234                zoran_reap_stat_com(zr);
1235                zoran_feed_stat_com(zr);
1236                wake_up_interruptible(&zr->jpg_capq);
1237                zr->JPEG_missed = 0;
1238                return;
1239        }
1240
1241        if (zr->JPEG_error != 1) {
1242                /*
1243                 * First entry: error just happened during normal operation
1244                 *
1245                 * In BUZ_MODE_MOTION_COMPRESS:
1246                 *
1247                 * Possible glitch in TV signal. In this case we should
1248                 * stop the codec and wait for good quality signal before
1249                 * restarting it to avoid further problems
1250                 *
1251                 * In BUZ_MODE_MOTION_DECOMPRESS:
1252                 *
1253                 * Bad JPEG frame: we have to mark it as processed (codec crashed
1254                 * and was not able to do it itself), and to remove it from queue.
1255                 */
1256                btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1257                udelay(1);
1258                stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1259                btwrite(0, ZR36057_JPC);
1260                btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1261                jpeg_codec_reset(zr);
1262                jpeg_codec_sleep(zr, 1);
1263                zr->JPEG_error = 1;
1264                zr->num_errors++;
1265
1266                /* Report error */
1267                if (zr36067_debug > 1 && zr->num_errors <= 8) {
1268                        long frame;
1269                        frame =
1270                            zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1271                        printk(KERN_ERR
1272                               "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1273                               ZR_DEVNAME(zr), stat, zr->last_isr,
1274                               zr->jpg_que_tail, zr->jpg_dma_tail,
1275                               zr->jpg_dma_head, zr->jpg_que_head,
1276                               zr->jpg_seq_num, frame);
1277                        printk("stat_com frames:");
1278                        {
1279                                int i, j;
1280                                for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1281                                        for (i = 0;
1282                                             i < zr->jpg_buffers.num_buffers;
1283                                             i++) {
1284                                                if (le32_to_cpu(zr->stat_com[j]) ==
1285                                                    zr->jpg_buffers.
1286                                                    buffer[i].
1287                                                    frag_tab_bus) {
1288                                                        printk("% d->%d",
1289                                                               j, i);
1290                                                }
1291                                        }
1292                                }
1293                                printk("\n");
1294                        }
1295                }
1296                /* Find an entry in stat_com and rotate contents */
1297                {
1298                        int i;
1299
1300                        if (zr->jpg_settings.TmpDcm == 1)
1301                                i = (zr->jpg_dma_tail -
1302                                     zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1303                        else
1304                                i = ((zr->jpg_dma_tail -
1305                                      zr->jpg_err_shift) & 1) * 2;
1306                        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1307                                /* Mimic zr36067 operation */
1308                                zr->stat_com[i] |= cpu_to_le32(1);
1309                                if (zr->jpg_settings.TmpDcm != 1)
1310                                        zr->stat_com[i + 1] |= cpu_to_le32(1);
1311                                /* Refill */
1312                                zoran_reap_stat_com(zr);
1313                                zoran_feed_stat_com(zr);
1314                                wake_up_interruptible(&zr->jpg_capq);
1315                                /* Find an entry in stat_com again after refill */
1316                                if (zr->jpg_settings.TmpDcm == 1)
1317                                        i = (zr->jpg_dma_tail -
1318                                             zr->jpg_err_shift) &
1319                                            BUZ_MASK_STAT_COM;
1320                                else
1321                                        i = ((zr->jpg_dma_tail -
1322                                              zr->jpg_err_shift) & 1) * 2;
1323                        }
1324                        if (i) {
1325                                /* Rotate stat_comm entries to make current entry first */
1326                                int j;
1327                                u32 bus_addr[BUZ_NUM_STAT_COM];
1328
1329                                /* Here we are copying the stat_com array, which
1330                                 * is already in little endian format, so
1331                                 * no endian conversions here
1332                                 */
1333                                memcpy(bus_addr, zr->stat_com,
1334                                       sizeof(bus_addr));
1335                                for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1336                                        zr->stat_com[j] =
1337                                            bus_addr[(i + j) &
1338                                                     BUZ_MASK_STAT_COM];
1339
1340                                }
1341                                zr->jpg_err_shift += i;
1342                                zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1343                        }
1344                        if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1345                                zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1346                }
1347        }
1348
1349        /* Now the stat_comm buffer is ready for restart */
1350        do {
1351                int status, mode;
1352
1353                if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1354                        decoder_command(zr, DECODER_GET_STATUS, &status);
1355                        mode = CODEC_DO_COMPRESSION;
1356                } else {
1357                        status = 0;
1358                        mode = CODEC_DO_EXPANSION;
1359                }
1360                if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1361                    (status & DECODER_STATUS_GOOD)) {
1362                        /********** RESTART code *************/
1363                        jpeg_codec_reset(zr);
1364                        zr->codec->set_mode(zr->codec, mode);
1365                        zr36057_set_jpg(zr, zr->codec_mode);
1366                        jpeg_start(zr);
1367
1368                        if (zr->num_errors <= 8)
1369                                dprintk(2, KERN_INFO "%s: Restart\n",
1370                                        ZR_DEVNAME(zr));
1371
1372                        zr->JPEG_missed = 0;
1373                        zr->JPEG_error = 2;
1374                        /********** End RESTART code ***********/
1375                }
1376        } while (0);
1377}
1378
1379irqreturn_t
1380zoran_irq (int             irq,
1381           void           *dev_id)
1382{
1383        u32 stat, astat;
1384        int count;
1385        struct zoran *zr;
1386        unsigned long flags;
1387
1388        zr = dev_id;
1389        count = 0;
1390
1391        if (zr->testing) {
1392                /* Testing interrupts */
1393                spin_lock_irqsave(&zr->spinlock, flags);
1394                while ((stat = count_reset_interrupt(zr))) {
1395                        if (count++ > 100) {
1396                                btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1397                                dprintk(1,
1398                                        KERN_ERR
1399                                        "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1400                                        ZR_DEVNAME(zr), stat);
1401                                wake_up_interruptible(&zr->test_q);
1402                        }
1403                }
1404                zr->last_isr = stat;
1405                spin_unlock_irqrestore(&zr->spinlock, flags);
1406                return IRQ_HANDLED;
1407        }
1408
1409        spin_lock_irqsave(&zr->spinlock, flags);
1410        while (1) {
1411                /* get/clear interrupt status bits */
1412                stat = count_reset_interrupt(zr);
1413                astat = stat & IRQ_MASK;
1414                if (!astat) {
1415                        break;
1416                }
1417                dprintk(4,
1418                        KERN_DEBUG
1419                        "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1420                        astat, btread(ZR36057_ICR));
1421                if (astat & zr->card.vsync_int) {       // SW
1422
1423                        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1424                            zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1425                                /* count missed interrupts */
1426                                zr->JPEG_missed++;
1427                        }
1428                        //post_office_read(zr,1,0);
1429                        /* Interrupts may still happen when
1430                         * zr->v4l_memgrab_active is switched off.
1431                         * We simply ignore them */
1432
1433                        if (zr->v4l_memgrab_active) {
1434
1435                                /* A lot more checks should be here ... */
1436                                if ((btread(ZR36057_VSSFGR) &
1437                                     ZR36057_VSSFGR_SnapShot) == 0)
1438                                        dprintk(1,
1439                                                KERN_WARNING
1440                                                "%s: BuzIRQ with SnapShot off ???\n",
1441                                                ZR_DEVNAME(zr));
1442
1443                                if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1444                                        /* There is a grab on a frame going on, check if it has finished */
1445
1446                                        if ((btread(ZR36057_VSSFGR) &
1447                                             ZR36057_VSSFGR_FrameGrab) ==
1448                                            0) {
1449                                                /* it is finished, notify the user */
1450
1451                                                zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1452                                                zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1453                                                do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1454                                                zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1455                                                zr->v4l_pend_tail++;
1456                                        }
1457                                }
1458
1459                                if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1460                                        wake_up_interruptible(&zr->v4l_capq);
1461
1462                                /* Check if there is another grab queued */
1463
1464                                if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1465                                    zr->v4l_pend_tail != zr->v4l_pend_head) {
1466
1467                                        int frame = zr->v4l_pend[zr->v4l_pend_tail &
1468                                                         V4L_MASK_FRAME];
1469                                        u32 reg;
1470
1471                                        zr->v4l_grab_frame = frame;
1472
1473                                        /* Set zr36057 video front end and enable video */
1474
1475                                        /* Buffer address */
1476
1477                                        reg =
1478                                            zr->v4l_buffers.buffer[frame].
1479                                            fbuffer_bus;
1480                                        btwrite(reg, ZR36057_VDTR);
1481                                        if (zr->v4l_settings.height >
1482                                            BUZ_MAX_HEIGHT / 2)
1483                                                reg +=
1484                                                    zr->v4l_settings.
1485                                                    bytesperline;
1486                                        btwrite(reg, ZR36057_VDBR);
1487
1488                                        /* video stride, status, and frame grab register */
1489                                        reg = 0;
1490                                        if (zr->v4l_settings.height >
1491                                            BUZ_MAX_HEIGHT / 2)
1492                                                reg +=
1493                                                    zr->v4l_settings.
1494                                                    bytesperline;
1495                                        reg =
1496                                            (reg <<
1497                                             ZR36057_VSSFGR_DispStride);
1498                                        reg |= ZR36057_VSSFGR_VidOvf;
1499                                        reg |= ZR36057_VSSFGR_SnapShot;
1500                                        reg |= ZR36057_VSSFGR_FrameGrab;
1501                                        btwrite(reg, ZR36057_VSSFGR);
1502
1503                                        btor(ZR36057_VDCR_VidEn,
1504                                             ZR36057_VDCR);
1505                                }
1506                        }
1507
1508                        /* even if we don't grab, we do want to increment
1509                         * the sequence counter to see lost frames */
1510                        zr->v4l_grab_seq++;
1511                }
1512#if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1513                if (astat & ZR36057_ISR_CodRepIRQ) {
1514                        zr->intr_counter_CodRepIRQ++;
1515                        IDEBUG(printk
1516                               (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1517                                ZR_DEVNAME(zr)));
1518                        btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1519                }
1520#endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1521
1522#if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1523                if (astat & ZR36057_ISR_JPEGRepIRQ) {
1524
1525                        if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1526                            zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1527                                if (zr36067_debug > 1 &&
1528                                    (!zr->frame_num || zr->JPEG_error)) {
1529                                        printk(KERN_INFO
1530                                               "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1531                                               ZR_DEVNAME(zr), stat,
1532                                               zr->jpg_settings.odd_even,
1533                                               zr->jpg_settings.
1534                                               field_per_buff,
1535                                               zr->JPEG_missed);
1536                                        {
1537                                                char sc[] = "0000";
1538                                                char sv[5];
1539                                                int i;
1540                                                strcpy(sv, sc);
1541                                                for (i = 0; i < 4; i++) {
1542                                                        if (le32_to_cpu(zr->stat_com[i]) & 1)
1543                                                                sv[i] = '1';
1544                                                }
1545                                                sv[4] = 0;
1546                                                printk(KERN_INFO
1547                                                       "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1548                                                       ZR_DEVNAME(zr), sv,
1549                                                       zr->jpg_que_tail,
1550                                                       zr->jpg_dma_tail,
1551                                                       zr->jpg_dma_head,
1552                                                       zr->jpg_que_head);
1553                                        }
1554                                } else {
1555                                        if (zr->JPEG_missed > zr->JPEG_max_missed)      // Get statistics
1556                                                zr->JPEG_max_missed =
1557                                                    zr->JPEG_missed;
1558                                        if (zr->JPEG_missed <
1559                                            zr->JPEG_min_missed)
1560                                                zr->JPEG_min_missed =
1561                                                    zr->JPEG_missed;
1562                                }
1563
1564                                if (zr36067_debug > 2 && zr->frame_num < 6) {
1565                                        int i;
1566                                        printk("%s: seq=%ld stat_com:",
1567                                               ZR_DEVNAME(zr), zr->jpg_seq_num);
1568                                        for (i = 0; i < 4; i++) {
1569                                                printk(" %08x",
1570                                                       le32_to_cpu(zr->stat_com[i]));
1571                                        }
1572                                        printk("\n");
1573                                }
1574                                zr->frame_num++;
1575                                zr->JPEG_missed = 0;
1576                                zr->JPEG_error = 0;
1577                                zoran_reap_stat_com(zr);
1578                                zoran_feed_stat_com(zr);
1579                                wake_up_interruptible(&zr->jpg_capq);
1580                        } /*else {
1581                              dprintk(1,
1582                                        KERN_ERR
1583                                        "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1584                                        ZR_DEVNAME(zr));
1585                        }*/
1586                }
1587#endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1588
1589                /* DATERR, too many fields missed, error processing */
1590                if ((astat & zr->card.jpeg_int) ||
1591                    zr->JPEG_missed > 25 ||
1592                    zr->JPEG_error == 1 ||
1593                    ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1594                     (zr->frame_num & (zr->JPEG_missed >
1595                                       zr->jpg_settings.field_per_buff)))) {
1596                        error_handler(zr, astat, stat);
1597                }
1598
1599                count++;
1600                if (count > 10) {
1601                        dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1602                                ZR_DEVNAME(zr), count);
1603                        if (count > 20) {
1604                                btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1605                                dprintk(2,
1606                                        KERN_ERR
1607                                        "%s: IRQ lockup, cleared int mask\n",
1608                                        ZR_DEVNAME(zr));
1609                                break;
1610                        }
1611                }
1612                zr->last_isr = stat;
1613        }
1614        spin_unlock_irqrestore(&zr->spinlock, flags);
1615
1616        return IRQ_HANDLED;
1617}
1618
1619void
1620zoran_set_pci_master (struct zoran *zr,
1621                      int           set_master)
1622{
1623        if (set_master) {
1624                pci_set_master(zr->pci_dev);
1625        } else {
1626                u16 command;
1627
1628                pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1629                command &= ~PCI_COMMAND_MASTER;
1630                pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1631        }
1632}
1633
1634void
1635zoran_init_hardware (struct zoran *zr)
1636{
1637        int j, zero = 0;
1638
1639        /* Enable bus-mastering */
1640        zoran_set_pci_master(zr, 1);
1641
1642        /* Initialize the board */
1643        if (zr->card.init) {
1644                zr->card.init(zr);
1645        }
1646
1647        j = zr->card.input[zr->input].muxsel;
1648
1649        decoder_command(zr, 0, NULL);
1650        decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1651        decoder_command(zr, DECODER_SET_INPUT, &j);
1652
1653        encoder_command(zr, 0, NULL);
1654        encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1655        encoder_command(zr, ENCODER_SET_INPUT, &zero);
1656
1657        /* toggle JPEG codec sleep to sync PLL */
1658        jpeg_codec_sleep(zr, 1);
1659        jpeg_codec_sleep(zr, 0);
1660
1661        /* set individual interrupt enables (without GIRQ1)
1662         * but don't global enable until zoran_open() */
1663
1664        //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1665        // It looks like using only JPEGRepIRQEn is not always reliable,
1666        // may be when JPEG codec crashes it won't generate IRQ? So,
1667         /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1668            zr36057_init_vfe(zr);
1669
1670        zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1671
1672        btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1673}
1674
1675void
1676zr36057_restart (struct zoran *zr)
1677{
1678        btwrite(0, ZR36057_SPGPPCR);
1679        mdelay(1);
1680        btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1681        mdelay(1);
1682
1683        /* assert P_Reset */
1684        btwrite(0, ZR36057_JPC);
1685        /* set up GPIO direction - all output */
1686        btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1687
1688        /* set up GPIO pins and guest bus timing */
1689        btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1690}
1691
1692/*
1693 * initialize video front end
1694 */
1695
1696static void
1697zr36057_init_vfe (struct zoran *zr)
1698{
1699        u32 reg;
1700
1701        reg = btread(ZR36057_VFESPFR);
1702        reg |= ZR36057_VFESPFR_LittleEndian;
1703        reg &= ~ZR36057_VFESPFR_VCLKPol;
1704        reg |= ZR36057_VFESPFR_ExtFl;
1705        reg |= ZR36057_VFESPFR_TopField;
1706        btwrite(reg, ZR36057_VFESPFR);
1707        reg = btread(ZR36057_VDCR);
1708        if (pci_pci_problems & PCIPCI_TRITON)
1709                // || zr->revision < 1) // Revision 1 has also Triton support
1710                reg &= ~ZR36057_VDCR_Triton;
1711        else
1712                reg |= ZR36057_VDCR_Triton;
1713        btwrite(reg, ZR36057_VDCR);
1714}
1715
1716/*
1717 * Interface to decoder and encoder chips using i2c bus
1718 */
1719
1720int
1721decoder_command (struct zoran *zr,
1722                 int           cmd,
1723                 void         *data)
1724{
1725        if (zr->decoder == NULL)
1726                return -EIO;
1727
1728        if (zr->card.type == LML33 &&
1729            (cmd == DECODER_SET_NORM || DECODER_SET_INPUT)) {
1730                int res;
1731
1732                // Bt819 needs to reset its FIFO buffer using #FRST pin and
1733                // LML33 card uses GPIO(7) for that.
1734                GPIO(zr, 7, 0);
1735                res = zr->decoder->driver->command(zr->decoder, cmd, data);
1736                // Pull #FRST high.
1737                GPIO(zr, 7, 1);
1738                return res;
1739        } else
1740                return zr->decoder->driver->command(zr->decoder, cmd,
1741                                                    data);
1742}
1743
1744int
1745encoder_command (struct zoran *zr,
1746                 int           cmd,
1747                 void         *data)
1748{
1749        if (zr->encoder == NULL)
1750                return -1;
1751
1752        return zr->encoder->driver->command(zr->encoder, cmd, data);
1753}
1754