V4L/DVB (11380): v4l2-subdev: change s_routing prototype
[linux-2.6.git] / drivers / media / video / 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
35 #include <linux/interrupt.h>
36 #include <linux/proc_fs.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <linux/videodev2.h>
40 #include <media/v4l2-common.h>
41 #include <linux/spinlock.h>
42 #include <linux/sem.h>
43
44 #include <linux/pci.h>
45 #include <linux/delay.h>
46 #include <linux/wait.h>
47
48 #include <asm/byteorder.h>
49 #include <asm/io.h>
50
51 #include "videocodec.h"
52 #include "zoran.h"
53 #include "zoran_device.h"
54 #include "zoran_card.h"
55
56 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
57                    ZR36057_ISR_GIRQ1 | \
58                    ZR36057_ISR_JPEGRepIRQ )
59
60 static int lml33dpath;          /* default = 0
61                                  * 1 will use digital path in capture
62                                  * mode instead of analog. It can be
63                                  * used for picture adjustments using
64                                  * tool like xawtv while watching image
65                                  * on TV monitor connected to the output.
66                                  * However, due to absence of 75 Ohm
67                                  * load on Bt819 input, there will be
68                                  * some image imperfections */
69
70 module_param(lml33dpath, bool, 0644);
71 MODULE_PARM_DESC(lml33dpath,
72                  "Use digital path capture mode (on LML33 cards)");
73
74 static void
75 zr36057_init_vfe (struct zoran *zr);
76
77 /*
78  * General Purpose I/O and Guest bus access
79  */
80
81 /*
82  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
83  * GPIO bit number in the card_info structure is set to 0.
84  */
85
86 void
87 GPIO (struct zoran *zr,
88       int           bit,
89       unsigned int  value)
90 {
91         u32 reg;
92         u32 mask;
93
94         /* Make sure the bit number is legal
95          * A bit number of -1 (lacking) gives a mask of 0,
96          * making it harmless */
97         mask = (1 << (24 + bit)) & 0xff000000;
98         reg = btread(ZR36057_GPPGCR1) & ~mask;
99         if (value) {
100                 reg |= mask;
101         }
102         btwrite(reg, ZR36057_GPPGCR1);
103         udelay(1);
104 }
105
106 /*
107  * Wait til post office is no longer busy
108  */
109
110 int
111 post_office_wait (struct zoran *zr)
112 {
113         u32 por;
114
115 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
116         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
117                 /* wait for something to happen */
118         }
119         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
120                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
121                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
122                         por);
123                 return -1;
124         }
125
126         return 0;
127 }
128
129 int
130 post_office_write (struct zoran *zr,
131                    unsigned int  guest,
132                    unsigned int  reg,
133                    unsigned int  value)
134 {
135         u32 por;
136
137         por =
138             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
139             ((reg & 7) << 16) | (value & 0xFF);
140         btwrite(por, ZR36057_POR);
141
142         return post_office_wait(zr);
143 }
144
145 int
146 post_office_read (struct zoran *zr,
147                   unsigned int  guest,
148                   unsigned int  reg)
149 {
150         u32 por;
151
152         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
153         btwrite(por, ZR36057_POR);
154         if (post_office_wait(zr) < 0) {
155                 return -1;
156         }
157
158         return btread(ZR36057_POR) & 0xFF;
159 }
160
161 /*
162  * detect guests
163  */
164
165 static void
166 dump_guests (struct zoran *zr)
167 {
168         if (zr36067_debug > 2) {
169                 int i, guest[8];
170
171                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
172                         guest[i] = post_office_read(zr, i, 0);
173                 }
174
175                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
176
177                 for (i = 1; i < 8; i++) {
178                         printk(" 0x%02x", guest[i]);
179                 }
180                 printk("\n");
181         }
182 }
183
184 static inline unsigned long
185 get_time (void)
186 {
187         struct timeval tv;
188
189         do_gettimeofday(&tv);
190         return (1000000 * tv.tv_sec + tv.tv_usec);
191 }
192
193 void
194 detect_guest_activity (struct zoran *zr)
195 {
196         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
197         unsigned long t0, t1;
198
199         dump_guests(zr);
200         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
201                ZR_DEVNAME(zr));
202         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
203                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
204         }
205
206         timeout = 0;
207         j = 0;
208         t0 = get_time();
209         while (timeout < 10000) {
210                 udelay(10);
211                 timeout++;
212                 for (i = 1; (i < 8) && (j < 8); i++) {
213                         res = post_office_read(zr, i, 0);
214                         if (res != guest[i]) {
215                                 t1 = get_time();
216                                 change[j][0] = (t1 - t0);
217                                 t0 = t1;
218                                 change[j][1] = i;
219                                 change[j][2] = res;
220                                 j++;
221                                 guest[i] = res;
222                         }
223                 }
224                 if (j >= 8)
225                         break;
226         }
227         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
228
229         for (i = 1; i < 8; i++) {
230                 printk(" 0x%02x", guest0[i]);
231         }
232         printk("\n");
233         if (j == 0) {
234                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
235                 return;
236         }
237         for (i = 0; i < j; i++) {
238                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
239                        change[i][0], change[i][1], change[i][2]);
240         }
241 }
242
243 /*
244  * JPEG Codec access
245  */
246
247 void
248 jpeg_codec_sleep (struct zoran *zr,
249                   int           sleep)
250 {
251         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
252         if (!sleep) {
253                 dprintk(3,
254                         KERN_DEBUG
255                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
256                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
257                 udelay(500);
258         } else {
259                 dprintk(3,
260                         KERN_DEBUG
261                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
262                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
263                 udelay(2);
264         }
265 }
266
267 int
268 jpeg_codec_reset (struct zoran *zr)
269 {
270         /* Take the codec out of sleep */
271         jpeg_codec_sleep(zr, 0);
272
273         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
274                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
275                                   0);
276                 udelay(2);
277         } else {
278                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
279                 udelay(2);
280                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
281                 udelay(2);
282         }
283
284         return 0;
285 }
286
287 /*
288  *   Set the registers for the size we have specified. Don't bother
289  *   trying to understand this without the ZR36057 manual in front of
290  *   you [AC].
291  *
292  *   PS: The manual is free for download in .pdf format from
293  *   www.zoran.com - nicely done those folks.
294  */
295
296 static void
297 zr36057_adjust_vfe (struct zoran          *zr,
298                     enum zoran_codec_mode  mode)
299 {
300         u32 reg;
301
302         switch (mode) {
303         case BUZ_MODE_MOTION_DECOMPRESS:
304                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
305                 reg = btread(ZR36057_VFEHCR);
306                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
307                         reg += ((1 << 10) | 1);
308                 }
309                 btwrite(reg, ZR36057_VFEHCR);
310                 break;
311         case BUZ_MODE_MOTION_COMPRESS:
312         case BUZ_MODE_IDLE:
313         default:
314                 if ((zr->norm & V4L2_STD_NTSC) ||
315                     (zr->card.type == LML33R10 &&
316                      (zr->norm & V4L2_STD_PAL)))
317                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
318                 else
319                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
320                 reg = btread(ZR36057_VFEHCR);
321                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
322                         reg -= ((1 << 10) | 1);
323                 }
324                 btwrite(reg, ZR36057_VFEHCR);
325                 break;
326         }
327 }
328
329 /*
330  * set geometry
331  */
332
333 static void
334 zr36057_set_vfe (struct zoran              *zr,
335                  int                        video_width,
336                  int                        video_height,
337                  const struct zoran_format *format)
338 {
339         struct tvnorm *tvn;
340         unsigned HStart, HEnd, VStart, VEnd;
341         unsigned DispMode;
342         unsigned VidWinWid, VidWinHt;
343         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
344         unsigned Wa, We, Ha, He;
345         unsigned X, Y, HorDcm, VerDcm;
346         u32 reg;
347         unsigned mask_line_size;
348
349         tvn = zr->timing;
350
351         Wa = tvn->Wa;
352         Ha = tvn->Ha;
353
354         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
355                 ZR_DEVNAME(zr), video_width, video_height);
356
357         if (video_width < BUZ_MIN_WIDTH ||
358             video_height < BUZ_MIN_HEIGHT ||
359             video_width > Wa || video_height > Ha) {
360                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
361                         ZR_DEVNAME(zr), video_width, video_height);
362                 return;
363         }
364
365         /**** zr36057 ****/
366
367         /* horizontal */
368         VidWinWid = video_width;
369         X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
370         We = (VidWinWid * 64) / X;
371         HorDcm = 64 - X;
372         hcrop1 = 2 * ((tvn->Wa - We) / 4);
373         hcrop2 = tvn->Wa - We - hcrop1;
374         HStart = tvn->HStart ? tvn->HStart : 1;
375         /* (Ronald) Original comment:
376          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
377          * this is false. It inverses chroma values on the LML33R10 (so Cr
378          * suddenly is shown as Cb and reverse, really cool effect if you
379          * want to see blue faces, not useful otherwise). So don't use |1.
380          * However, the DC10 has '0' as HStart, but does need |1, so we
381          * use a dirty check...
382          */
383         HEnd = HStart + tvn->Wa - 1;
384         HStart += hcrop1;
385         HEnd -= hcrop2;
386         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
387             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
388         if (zr->card.vfe_pol.hsync_pol)
389                 reg |= ZR36057_VFEHCR_HSPol;
390         btwrite(reg, ZR36057_VFEHCR);
391
392         /* Vertical */
393         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
394         VidWinHt = DispMode ? video_height : video_height / 2;
395         Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
396         He = (VidWinHt * 64) / Y;
397         VerDcm = 64 - Y;
398         vcrop1 = (tvn->Ha / 2 - He) / 2;
399         vcrop2 = tvn->Ha / 2 - He - vcrop1;
400         VStart = tvn->VStart;
401         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
402         VStart += vcrop1;
403         VEnd -= vcrop2;
404         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
405             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
406         if (zr->card.vfe_pol.vsync_pol)
407                 reg |= ZR36057_VFEVCR_VSPol;
408         btwrite(reg, ZR36057_VFEVCR);
409
410         /* scaler and pixel format */
411         reg = 0;
412         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
413         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
414         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
415         /* RJ: I don't know, why the following has to be the opposite
416          * of the corresponding ZR36060 setting, but only this way
417          * we get the correct colors when uncompressing to the screen  */
418         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
419         /* RJ: Don't know if that is needed for NTSC also */
420         if (!(zr->norm & V4L2_STD_NTSC))
421                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
422         reg |= ZR36057_VFESPFR_TopField;
423         if (HorDcm >= 48) {
424                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
425         } else if (HorDcm >= 32) {
426                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
427         } else if (HorDcm >= 16) {
428                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
429         }
430         reg |= format->vfespfr;
431         btwrite(reg, ZR36057_VFESPFR);
432
433         /* display configuration */
434         reg = (16 << ZR36057_VDCR_MinPix)
435             | (VidWinHt << ZR36057_VDCR_VidWinHt)
436             | (VidWinWid << ZR36057_VDCR_VidWinWid);
437         if (pci_pci_problems & PCIPCI_TRITON)
438                 // || zr->revision < 1) // Revision 1 has also Triton support
439                 reg &= ~ZR36057_VDCR_Triton;
440         else
441                 reg |= ZR36057_VDCR_Triton;
442         btwrite(reg, ZR36057_VDCR);
443
444         /* (Ronald) don't write this if overlay_mask = NULL */
445         if (zr->overlay_mask) {
446                 /* Write overlay clipping mask data, but don't enable overlay clipping */
447                 /* RJ: since this makes only sense on the screen, we use
448                  * zr->overlay_settings.width instead of video_width */
449
450                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
451                 reg = virt_to_bus(zr->overlay_mask);
452                 btwrite(reg, ZR36057_MMTR);
453                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
454                 btwrite(reg, ZR36057_MMBR);
455                 reg =
456                     mask_line_size - (zr->overlay_settings.width +
457                                       31) / 32;
458                 if (DispMode == 0)
459                         reg += mask_line_size;
460                 reg <<= ZR36057_OCR_MaskStride;
461                 btwrite(reg, ZR36057_OCR);
462         }
463
464         zr36057_adjust_vfe(zr, zr->codec_mode);
465 }
466
467 /*
468  * Switch overlay on or off
469  */
470
471 void
472 zr36057_overlay (struct zoran *zr,
473                  int           on)
474 {
475         u32 reg;
476
477         if (on) {
478                 /* do the necessary settings ... */
479                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
480
481                 zr36057_set_vfe(zr,
482                                 zr->overlay_settings.width,
483                                 zr->overlay_settings.height,
484                                 zr->overlay_settings.format);
485
486                 /* Start and length of each line MUST be 4-byte aligned.
487                  * This should be allready checked before the call to this routine.
488                  * All error messages are internal driver checking only! */
489
490                 /* video display top and bottom registers */
491                 reg = (long) zr->vbuf_base +
492                     zr->overlay_settings.x *
493                     ((zr->overlay_settings.format->depth + 7) / 8) +
494                     zr->overlay_settings.y *
495                     zr->vbuf_bytesperline;
496                 btwrite(reg, ZR36057_VDTR);
497                 if (reg & 3)
498                         dprintk(1,
499                                 KERN_ERR
500                                 "%s: zr36057_overlay() - video_address not aligned\n",
501                                 ZR_DEVNAME(zr));
502                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
503                         reg += zr->vbuf_bytesperline;
504                 btwrite(reg, ZR36057_VDBR);
505
506                 /* video stride, status, and frame grab register */
507                 reg = zr->vbuf_bytesperline -
508                     zr->overlay_settings.width *
509                     ((zr->overlay_settings.format->depth + 7) / 8);
510                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
511                         reg += zr->vbuf_bytesperline;
512                 if (reg & 3)
513                         dprintk(1,
514                                 KERN_ERR
515                                 "%s: zr36057_overlay() - video_stride not aligned\n",
516                                 ZR_DEVNAME(zr));
517                 reg = (reg << ZR36057_VSSFGR_DispStride);
518                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
519                 btwrite(reg, ZR36057_VSSFGR);
520
521                 /* Set overlay clipping */
522                 if (zr->overlay_settings.clipcount > 0)
523                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
524
525                 /* ... and switch it on */
526                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
527         } else {
528                 /* Switch it off */
529                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
530         }
531 }
532
533 /*
534  * The overlay mask has one bit for each pixel on a scan line,
535  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
536  */
537
538 void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
539 {
540         struct zoran *zr = fh->zr;
541         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
542         u32 *mask;
543         int x, y, width, height;
544         unsigned i, j, k;
545         u32 reg;
546
547         /* fill mask with one bits */
548         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
549         reg = 0;
550
551         for (i = 0; i < count; ++i) {
552                 /* pick up local copy of clip */
553                 x = vp[i].c.left;
554                 y = vp[i].c.top;
555                 width = vp[i].c.width;
556                 height = vp[i].c.height;
557
558                 /* trim clips that extend beyond the window */
559                 if (x < 0) {
560                         width += x;
561                         x = 0;
562                 }
563                 if (y < 0) {
564                         height += y;
565                         y = 0;
566                 }
567                 if (x + width > fh->overlay_settings.width) {
568                         width = fh->overlay_settings.width - x;
569                 }
570                 if (y + height > fh->overlay_settings.height) {
571                         height = fh->overlay_settings.height - y;
572                 }
573
574                 /* ignore degenerate clips */
575                 if (height <= 0) {
576                         continue;
577                 }
578                 if (width <= 0) {
579                         continue;
580                 }
581
582                 /* apply clip for each scan line */
583                 for (j = 0; j < height; ++j) {
584                         /* reset bit for each pixel */
585                         /* this can be optimized later if need be */
586                         mask = fh->overlay_mask + (y + j) * mask_line_size;
587                         for (k = 0; k < width; ++k) {
588                                 mask[(x + k) / 32] &=
589                                     ~((u32) 1 << (x + k) % 32);
590                         }
591                 }
592         }
593 }
594
595 /* Enable/Disable uncompressed memory grabbing of the 36057 */
596
597 void
598 zr36057_set_memgrab (struct zoran *zr,
599                      int           mode)
600 {
601         if (mode) {
602                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
603                  * means a capture is already in progress, but FrameGrab==1
604                  * doesn't necessary mean that.  It's more correct to say a 1
605                  * to 0 transition indicates a capture completed.  If a
606                  * capture is pending when capturing is tuned off, FrameGrab
607                  * will be stuck at 1 until capturing is turned back on.
608                  */
609                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
610                         dprintk(1,
611                                 KERN_WARNING
612                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
613                                 ZR_DEVNAME(zr));
614
615                 /* switch on VSync interrupts */
616                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
617                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
618
619                 /* enable SnapShot */
620                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
621
622                 /* Set zr36057 video front end  and enable video */
623                 zr36057_set_vfe(zr, zr->v4l_settings.width,
624                                 zr->v4l_settings.height,
625                                 zr->v4l_settings.format);
626
627                 zr->v4l_memgrab_active = 1;
628         } else {
629                 /* switch off VSync interrupts */
630                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
631
632                 zr->v4l_memgrab_active = 0;
633                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
634
635                 /* reenable grabbing to screen if it was running */
636                 if (zr->v4l_overlay_active) {
637                         zr36057_overlay(zr, 1);
638                 } else {
639                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
640                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
641                 }
642         }
643 }
644
645 int
646 wait_grab_pending (struct zoran *zr)
647 {
648         unsigned long flags;
649
650         /* wait until all pending grabs are finished */
651
652         if (!zr->v4l_memgrab_active)
653                 return 0;
654
655         wait_event_interruptible(zr->v4l_capq,
656                         (zr->v4l_pend_tail == zr->v4l_pend_head));
657         if (signal_pending(current))
658                 return -ERESTARTSYS;
659
660         spin_lock_irqsave(&zr->spinlock, flags);
661         zr36057_set_memgrab(zr, 0);
662         spin_unlock_irqrestore(&zr->spinlock, flags);
663
664         return 0;
665 }
666
667 /*****************************************************************************
668  *                                                                           *
669  *  Set up the Buz-specific MJPEG part                                       *
670  *                                                                           *
671  *****************************************************************************/
672
673 static inline void
674 set_frame (struct zoran *zr,
675            int           val)
676 {
677         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
678 }
679
680 static void
681 set_videobus_dir (struct zoran *zr,
682                   int           val)
683 {
684         switch (zr->card.type) {
685         case LML33:
686         case LML33R10:
687                 if (lml33dpath == 0)
688                         GPIO(zr, 5, val);
689                 else
690                         GPIO(zr, 5, 1);
691                 break;
692         default:
693                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
694                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
695                 break;
696         }
697 }
698
699 static void
700 init_jpeg_queue (struct zoran *zr)
701 {
702         int i;
703
704         /* re-initialize DMA ring stuff */
705         zr->jpg_que_head = 0;
706         zr->jpg_dma_head = 0;
707         zr->jpg_dma_tail = 0;
708         zr->jpg_que_tail = 0;
709         zr->jpg_seq_num = 0;
710         zr->JPEG_error = 0;
711         zr->num_errors = 0;
712         zr->jpg_err_seq = 0;
713         zr->jpg_err_shift = 0;
714         zr->jpg_queued_num = 0;
715         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
716                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
717         }
718         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
719                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
720         }
721 }
722
723 static void
724 zr36057_set_jpg (struct zoran          *zr,
725                  enum zoran_codec_mode  mode)
726 {
727         struct tvnorm *tvn;
728         u32 reg;
729
730         tvn = zr->timing;
731
732         /* assert P_Reset, disable code transfer, deassert Active */
733         btwrite(0, ZR36057_JPC);
734
735         /* MJPEG compression mode */
736         switch (mode) {
737
738         case BUZ_MODE_MOTION_COMPRESS:
739         default:
740                 reg = ZR36057_JMC_MJPGCmpMode;
741                 break;
742
743         case BUZ_MODE_MOTION_DECOMPRESS:
744                 reg = ZR36057_JMC_MJPGExpMode;
745                 reg |= ZR36057_JMC_SyncMstr;
746                 /* RJ: The following is experimental - improves the output to screen */
747                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
748                 break;
749
750         case BUZ_MODE_STILL_COMPRESS:
751                 reg = ZR36057_JMC_JPGCmpMode;
752                 break;
753
754         case BUZ_MODE_STILL_DECOMPRESS:
755                 reg = ZR36057_JMC_JPGExpMode;
756                 break;
757
758         }
759         reg |= ZR36057_JMC_JPG;
760         if (zr->jpg_settings.field_per_buff == 1)
761                 reg |= ZR36057_JMC_Fld_per_buff;
762         btwrite(reg, ZR36057_JMC);
763
764         /* vertical */
765         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
766         reg = (6 << ZR36057_VSP_VsyncSize) |
767               (tvn->Ht << ZR36057_VSP_FrmTot);
768         btwrite(reg, ZR36057_VSP);
769         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
770               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
771         btwrite(reg, ZR36057_FVAP);
772
773         /* horizontal */
774         if (zr->card.vfe_pol.hsync_pol)
775                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
776         else
777                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
778         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
779               (tvn->Wt << ZR36057_HSP_LineTot);
780         btwrite(reg, ZR36057_HSP);
781         reg = ((zr->jpg_settings.img_x +
782                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
783               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
784         btwrite(reg, ZR36057_FHAP);
785
786         /* field process parameters */
787         if (zr->jpg_settings.odd_even)
788                 reg = ZR36057_FPP_Odd_Even;
789         else
790                 reg = 0;
791
792         btwrite(reg, ZR36057_FPP);
793
794         /* Set proper VCLK Polarity, else colors will be wrong during playback */
795         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
796
797         /* code base address */
798         reg = virt_to_bus(zr->stat_com);
799         btwrite(reg, ZR36057_JCBA);
800
801         /* FIFO threshold (FIFO is 160. double words) */
802         /* NOTE: decimal values here */
803         switch (mode) {
804
805         case BUZ_MODE_STILL_COMPRESS:
806         case BUZ_MODE_MOTION_COMPRESS:
807                 if (zr->card.type != BUZ)
808                         reg = 140;
809                 else
810                         reg = 60;
811                 break;
812
813         case BUZ_MODE_STILL_DECOMPRESS:
814         case BUZ_MODE_MOTION_DECOMPRESS:
815                 reg = 20;
816                 break;
817
818         default:
819                 reg = 80;
820                 break;
821
822         }
823         btwrite(reg, ZR36057_JCFT);
824         zr36057_adjust_vfe(zr, mode);
825
826 }
827
828 void
829 print_interrupts (struct zoran *zr)
830 {
831         int res, noerr = 0;
832
833         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
834         if ((res = zr->field_counter) < -1 || res > 1) {
835                 printk(" FD:%d", res);
836         }
837         if ((res = zr->intr_counter_GIRQ1) != 0) {
838                 printk(" GIRQ1:%d", res);
839                 noerr++;
840         }
841         if ((res = zr->intr_counter_GIRQ0) != 0) {
842                 printk(" GIRQ0:%d", res);
843                 noerr++;
844         }
845         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
846                 printk(" CodRepIRQ:%d", res);
847                 noerr++;
848         }
849         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
850                 printk(" JPEGRepIRQ:%d", res);
851                 noerr++;
852         }
853         if (zr->JPEG_max_missed) {
854                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
855                        zr->JPEG_min_missed);
856         }
857         if (zr->END_event_missed) {
858                 printk(" ENDs missed: %d", zr->END_event_missed);
859         }
860         //if (zr->jpg_queued_num) {
861         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
862                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
863         //}
864         if (!noerr) {
865                 printk(": no interrupts detected.");
866         }
867         printk("\n");
868 }
869
870 void
871 clear_interrupt_counters (struct zoran *zr)
872 {
873         zr->intr_counter_GIRQ1 = 0;
874         zr->intr_counter_GIRQ0 = 0;
875         zr->intr_counter_CodRepIRQ = 0;
876         zr->intr_counter_JPEGRepIRQ = 0;
877         zr->field_counter = 0;
878         zr->IRQ1_in = 0;
879         zr->IRQ1_out = 0;
880         zr->JPEG_in = 0;
881         zr->JPEG_out = 0;
882         zr->JPEG_0 = 0;
883         zr->JPEG_1 = 0;
884         zr->END_event_missed = 0;
885         zr->JPEG_missed = 0;
886         zr->JPEG_max_missed = 0;
887         zr->JPEG_min_missed = 0x7fffffff;
888 }
889
890 static u32
891 count_reset_interrupt (struct zoran *zr)
892 {
893         u32 isr;
894
895         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
896                 if (isr & ZR36057_ISR_GIRQ1) {
897                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
898                         zr->intr_counter_GIRQ1++;
899                 }
900                 if (isr & ZR36057_ISR_GIRQ0) {
901                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
902                         zr->intr_counter_GIRQ0++;
903                 }
904                 if (isr & ZR36057_ISR_CodRepIRQ) {
905                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
906                         zr->intr_counter_CodRepIRQ++;
907                 }
908                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
909                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
910                         zr->intr_counter_JPEGRepIRQ++;
911                 }
912         }
913         return isr;
914 }
915
916 void
917 jpeg_start (struct zoran *zr)
918 {
919         int reg;
920
921         zr->frame_num = 0;
922
923         /* deassert P_reset, disable code transfer, deassert Active */
924         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
925         /* stop flushing the internal code buffer */
926         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
927         /* enable code transfer */
928         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
929
930         /* clear IRQs */
931         btwrite(IRQ_MASK, ZR36057_ISR);
932         /* enable the JPEG IRQs */
933         btwrite(zr->card.jpeg_int |
934                         ZR36057_ICR_JPEGRepIRQ |
935                         ZR36057_ICR_IntPinEn,
936                 ZR36057_ICR);
937
938         set_frame(zr, 0);       // \FRAME
939
940         /* set the JPEG codec guest ID */
941         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
942                (0 << ZR36057_JCGI_JPEGuestReg);
943         btwrite(reg, ZR36057_JCGI);
944
945         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
946             zr->card.video_codec == CODEC_TYPE_ZR36050) {
947                 /* Enable processing on the ZR36016 */
948                 if (zr->vfe)
949                         zr36016_write(zr->vfe, 0, 1);
950
951                 /* load the address of the GO register in the ZR36050 latch */
952                 post_office_write(zr, 0, 0, 0);
953         }
954
955         /* assert Active */
956         btor(ZR36057_JPC_Active, ZR36057_JPC);
957
958         /* enable the Go generation */
959         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
960         udelay(30);
961
962         set_frame(zr, 1);       // /FRAME
963
964         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
965 }
966
967 void
968 zr36057_enable_jpg (struct zoran          *zr,
969                     enum zoran_codec_mode  mode)
970 {
971         struct vfe_settings cap;
972         int field_size =
973             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
974
975         zr->codec_mode = mode;
976
977         cap.x = zr->jpg_settings.img_x;
978         cap.y = zr->jpg_settings.img_y;
979         cap.width = zr->jpg_settings.img_width;
980         cap.height = zr->jpg_settings.img_height;
981         cap.decimation =
982             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
983         cap.quality = zr->jpg_settings.jpg_comp.quality;
984
985         switch (mode) {
986
987         case BUZ_MODE_MOTION_COMPRESS: {
988                 struct jpeg_app_marker app;
989                 struct jpeg_com_marker com;
990
991                 /* In motion compress mode, the decoder output must be enabled, and
992                  * the video bus direction set to input.
993                  */
994                 set_videobus_dir(zr, 0);
995                 decoder_call(zr, video, s_stream, 1);
996                 encoder_call(zr, video, s_routing, 0, 0, 0);
997
998                 /* Take the JPEG codec and the VFE out of sleep */
999                 jpeg_codec_sleep(zr, 0);
1000
1001                 /* set JPEG app/com marker */
1002                 app.appn = zr->jpg_settings.jpg_comp.APPn;
1003                 app.len = zr->jpg_settings.jpg_comp.APP_len;
1004                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1005                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1006                                    sizeof(struct jpeg_app_marker), &app);
1007
1008                 com.len = zr->jpg_settings.jpg_comp.COM_len;
1009                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1010                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1011                                    sizeof(struct jpeg_com_marker), &com);
1012
1013                 /* Setup the JPEG codec */
1014                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1015                                    sizeof(int), &field_size);
1016                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1017                                      &zr->card.vfe_pol);
1018                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1019
1020                 /* Setup the VFE */
1021                 if (zr->vfe) {
1022                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1023                                          sizeof(int), &field_size);
1024                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1025                                            &zr->card.vfe_pol);
1026                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1027                 }
1028
1029                 init_jpeg_queue(zr);
1030                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1031
1032                 clear_interrupt_counters(zr);
1033                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1034                         ZR_DEVNAME(zr));
1035                 break;
1036         }
1037
1038         case BUZ_MODE_MOTION_DECOMPRESS:
1039                 /* In motion decompression mode, the decoder output must be disabled, and
1040                  * the video bus direction set to output.
1041                  */
1042                 decoder_call(zr, video, s_stream, 0);
1043                 set_videobus_dir(zr, 1);
1044                 encoder_call(zr, video, s_routing, 1, 0, 0);
1045
1046                 /* Take the JPEG codec and the VFE out of sleep */
1047                 jpeg_codec_sleep(zr, 0);
1048                 /* Setup the VFE */
1049                 if (zr->vfe) {
1050                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1051                                            &zr->card.vfe_pol);
1052                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1053                 }
1054                 /* Setup the JPEG codec */
1055                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1056                                      &zr->card.vfe_pol);
1057                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1058
1059                 init_jpeg_queue(zr);
1060                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1061
1062                 clear_interrupt_counters(zr);
1063                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1064                         ZR_DEVNAME(zr));
1065                 break;
1066
1067         case BUZ_MODE_IDLE:
1068         default:
1069                 /* shut down processing */
1070                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1071                       ZR36057_ICR);
1072                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1073                         ZR36057_ISR);
1074                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1075
1076                 msleep(50);
1077
1078                 set_videobus_dir(zr, 0);
1079                 set_frame(zr, 1);       // /FRAME
1080                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1081                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1082                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1083                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1084                 jpeg_codec_reset(zr);
1085                 jpeg_codec_sleep(zr, 1);
1086                 zr36057_adjust_vfe(zr, mode);
1087
1088                 decoder_call(zr, video, s_stream, 1);
1089                 encoder_call(zr, video, s_routing, 0, 0, 0);
1090
1091                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1092                 break;
1093
1094         }
1095 }
1096
1097 /* when this is called the spinlock must be held */
1098 void
1099 zoran_feed_stat_com (struct zoran *zr)
1100 {
1101         /* move frames from pending queue to DMA */
1102
1103         int frame, i, max_stat_com;
1104
1105         max_stat_com =
1106             (zr->jpg_settings.TmpDcm ==
1107              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1108
1109         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1110                zr->jpg_dma_head < zr->jpg_que_head) {
1111
1112                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1113                 if (zr->jpg_settings.TmpDcm == 1) {
1114                         /* fill 1 stat_com entry */
1115                         i = (zr->jpg_dma_head -
1116                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1117                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1118                                 break;
1119                         zr->stat_com[i] =
1120                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1121                 } else {
1122                         /* fill 2 stat_com entries */
1123                         i = ((zr->jpg_dma_head -
1124                               zr->jpg_err_shift) & 1) * 2;
1125                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1126                                 break;
1127                         zr->stat_com[i] =
1128                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1129                         zr->stat_com[i + 1] =
1130                             cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1131                 }
1132                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1133                 zr->jpg_dma_head++;
1134
1135         }
1136         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1137                 zr->jpg_queued_num++;
1138 }
1139
1140 /* when this is called the spinlock must be held */
1141 static void
1142 zoran_reap_stat_com (struct zoran *zr)
1143 {
1144         /* move frames from DMA queue to done queue */
1145
1146         int i;
1147         u32 stat_com;
1148         unsigned int seq;
1149         unsigned int dif;
1150         struct zoran_buffer *buffer;
1151         int frame;
1152
1153         /* In motion decompress we don't have a hardware frame counter,
1154          * we just count the interrupts here */
1155
1156         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1157                 zr->jpg_seq_num++;
1158         }
1159         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1160                 if (zr->jpg_settings.TmpDcm == 1)
1161                         i = (zr->jpg_dma_tail -
1162                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1163                 else
1164                         i = ((zr->jpg_dma_tail -
1165                               zr->jpg_err_shift) & 1) * 2 + 1;
1166
1167                 stat_com = le32_to_cpu(zr->stat_com[i]);
1168
1169                 if ((stat_com & 1) == 0) {
1170                         return;
1171                 }
1172                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1173                 buffer = &zr->jpg_buffers.buffer[frame];
1174                 do_gettimeofday(&buffer->bs.timestamp);
1175
1176                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1177                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1178
1179                         /* update sequence number with the help of the counter in stat_com */
1180
1181                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1182                         dif = (seq - zr->jpg_seq_num) & 0xff;
1183                         zr->jpg_seq_num += dif;
1184                 } else {
1185                         buffer->bs.length = 0;
1186                 }
1187                 buffer->bs.seq =
1188                     zr->jpg_settings.TmpDcm ==
1189                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1190                 buffer->state = BUZ_STATE_DONE;
1191
1192                 zr->jpg_dma_tail++;
1193         }
1194 }
1195
1196 static void zoran_restart(struct zoran *zr)
1197 {
1198         /* Now the stat_comm buffer is ready for restart */
1199         int status = 0, mode;
1200
1201         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1202                 decoder_call(zr, video, g_input_status, &status);
1203                 mode = CODEC_DO_COMPRESSION;
1204         } else {
1205                 status = V4L2_IN_ST_NO_SIGNAL;
1206                 mode = CODEC_DO_EXPANSION;
1207         }
1208         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1209             !(status & V4L2_IN_ST_NO_SIGNAL)) {
1210                 /********** RESTART code *************/
1211                 jpeg_codec_reset(zr);
1212                 zr->codec->set_mode(zr->codec, mode);
1213                 zr36057_set_jpg(zr, zr->codec_mode);
1214                 jpeg_start(zr);
1215
1216                 if (zr->num_errors <= 8)
1217                         dprintk(2, KERN_INFO "%s: Restart\n",
1218                                 ZR_DEVNAME(zr));
1219
1220                 zr->JPEG_missed = 0;
1221                 zr->JPEG_error = 2;
1222                 /********** End RESTART code ***********/
1223         }
1224 }
1225
1226 static void
1227 error_handler (struct zoran *zr,
1228                u32           astat,
1229                u32           stat)
1230 {
1231         int i, j;
1232
1233         /* This is JPEG error handling part */
1234         if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1235             zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1236                 return;
1237         }
1238
1239         if ((stat & 1) == 0 &&
1240             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1241             zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1242                 /* No free buffers... */
1243                 zoran_reap_stat_com(zr);
1244                 zoran_feed_stat_com(zr);
1245                 wake_up_interruptible(&zr->jpg_capq);
1246                 zr->JPEG_missed = 0;
1247                 return;
1248         }
1249
1250         if (zr->JPEG_error == 1) {
1251                 zoran_restart(zr);
1252                 return;
1253         }
1254
1255         /*
1256          * First entry: error just happened during normal operation
1257          *
1258          * In BUZ_MODE_MOTION_COMPRESS:
1259          *
1260          * Possible glitch in TV signal. In this case we should
1261          * stop the codec and wait for good quality signal before
1262          * restarting it to avoid further problems
1263          *
1264          * In BUZ_MODE_MOTION_DECOMPRESS:
1265          *
1266          * Bad JPEG frame: we have to mark it as processed (codec crashed
1267          * and was not able to do it itself), and to remove it from queue.
1268          */
1269         btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1270         udelay(1);
1271         stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1272         btwrite(0, ZR36057_JPC);
1273         btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1274         jpeg_codec_reset(zr);
1275         jpeg_codec_sleep(zr, 1);
1276         zr->JPEG_error = 1;
1277         zr->num_errors++;
1278
1279         /* Report error */
1280         if (zr36067_debug > 1 && zr->num_errors <= 8) {
1281                 long frame;
1282
1283                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1284                 printk(KERN_ERR
1285                        "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1286                        ZR_DEVNAME(zr), stat, zr->last_isr,
1287                        zr->jpg_que_tail, zr->jpg_dma_tail,
1288                        zr->jpg_dma_head, zr->jpg_que_head,
1289                        zr->jpg_seq_num, frame);
1290                 printk(KERN_INFO "stat_com frames:");
1291                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1292                         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1293                                 if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1294                                         printk(KERN_CONT "% d->%d", j, i);
1295                         }
1296                 }
1297                 printk(KERN_CONT "\n");
1298         }
1299         /* Find an entry in stat_com and rotate contents */
1300         if (zr->jpg_settings.TmpDcm == 1)
1301                 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1302         else
1303                 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1304         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1305                 /* Mimic zr36067 operation */
1306                 zr->stat_com[i] |= cpu_to_le32(1);
1307                 if (zr->jpg_settings.TmpDcm != 1)
1308                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1309                 /* Refill */
1310                 zoran_reap_stat_com(zr);
1311                 zoran_feed_stat_com(zr);
1312                 wake_up_interruptible(&zr->jpg_capq);
1313                 /* Find an entry in stat_com again after refill */
1314                 if (zr->jpg_settings.TmpDcm == 1)
1315                         i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1316                 else
1317                         i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1318         }
1319         if (i) {
1320                 /* Rotate stat_comm entries to make current entry first */
1321                 int j;
1322                 __le32 bus_addr[BUZ_NUM_STAT_COM];
1323
1324                 /* Here we are copying the stat_com array, which
1325                  * is already in little endian format, so
1326                  * no endian conversions here
1327                  */
1328                 memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1329
1330                 for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1331                         zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
1332
1333                 zr->jpg_err_shift += i;
1334                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1335         }
1336         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1337                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1338         zoran_restart(zr);
1339 }
1340
1341 irqreturn_t
1342 zoran_irq (int             irq,
1343            void           *dev_id)
1344 {
1345         u32 stat, astat;
1346         int count;
1347         struct zoran *zr;
1348         unsigned long flags;
1349
1350         zr = dev_id;
1351         count = 0;
1352
1353         if (zr->testing) {
1354                 /* Testing interrupts */
1355                 spin_lock_irqsave(&zr->spinlock, flags);
1356                 while ((stat = count_reset_interrupt(zr))) {
1357                         if (count++ > 100) {
1358                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1359                                 dprintk(1,
1360                                         KERN_ERR
1361                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1362                                         ZR_DEVNAME(zr), stat);
1363                                 wake_up_interruptible(&zr->test_q);
1364                         }
1365                 }
1366                 zr->last_isr = stat;
1367                 spin_unlock_irqrestore(&zr->spinlock, flags);
1368                 return IRQ_HANDLED;
1369         }
1370
1371         spin_lock_irqsave(&zr->spinlock, flags);
1372         while (1) {
1373                 /* get/clear interrupt status bits */
1374                 stat = count_reset_interrupt(zr);
1375                 astat = stat & IRQ_MASK;
1376                 if (!astat) {
1377                         break;
1378                 }
1379                 dprintk(4,
1380                         KERN_DEBUG
1381                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1382                         astat, btread(ZR36057_ICR));
1383                 if (astat & zr->card.vsync_int) {       // SW
1384
1385                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1386                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1387                                 /* count missed interrupts */
1388                                 zr->JPEG_missed++;
1389                         }
1390                         //post_office_read(zr,1,0);
1391                         /* Interrupts may still happen when
1392                          * zr->v4l_memgrab_active is switched off.
1393                          * We simply ignore them */
1394
1395                         if (zr->v4l_memgrab_active) {
1396                                 /* A lot more checks should be here ... */
1397                                 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1398                                         dprintk(1,
1399                                                 KERN_WARNING
1400                                                 "%s: BuzIRQ with SnapShot off ???\n",
1401                                                 ZR_DEVNAME(zr));
1402
1403                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1404                                         /* There is a grab on a frame going on, check if it has finished */
1405                                         if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1406                                                 /* it is finished, notify the user */
1407
1408                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1409                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1410                                                 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1411                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1412                                                 zr->v4l_pend_tail++;
1413                                         }
1414                                 }
1415
1416                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1417                                         wake_up_interruptible(&zr->v4l_capq);
1418
1419                                 /* Check if there is another grab queued */
1420
1421                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1422                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1423                                         int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1424                                         u32 reg;
1425
1426                                         zr->v4l_grab_frame = frame;
1427
1428                                         /* Set zr36057 video front end and enable video */
1429
1430                                         /* Buffer address */
1431
1432                                         reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1433                                         btwrite(reg, ZR36057_VDTR);
1434                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1435                                                 reg += zr->v4l_settings.bytesperline;
1436                                         btwrite(reg, ZR36057_VDBR);
1437
1438                                         /* video stride, status, and frame grab register */
1439                                         reg = 0;
1440                                         if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1441                                                 reg += zr->v4l_settings.bytesperline;
1442                                         reg = (reg << ZR36057_VSSFGR_DispStride);
1443                                         reg |= ZR36057_VSSFGR_VidOvf;
1444                                         reg |= ZR36057_VSSFGR_SnapShot;
1445                                         reg |= ZR36057_VSSFGR_FrameGrab;
1446                                         btwrite(reg, ZR36057_VSSFGR);
1447
1448                                         btor(ZR36057_VDCR_VidEn,
1449                                              ZR36057_VDCR);
1450                                 }
1451                         }
1452
1453                         /* even if we don't grab, we do want to increment
1454                          * the sequence counter to see lost frames */
1455                         zr->v4l_grab_seq++;
1456                 }
1457 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1458                 if (astat & ZR36057_ISR_CodRepIRQ) {
1459                         zr->intr_counter_CodRepIRQ++;
1460                         IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1461                                 ZR_DEVNAME(zr)));
1462                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1463                 }
1464 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1465
1466 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1467                 if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1468                     (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1469                      zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1470                         if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1471                                 char sc[] = "0000";
1472                                 char sv[5];
1473                                 int i;
1474
1475                                 printk(KERN_INFO
1476                                        "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1477                                        ZR_DEVNAME(zr), stat,
1478                                        zr->jpg_settings.odd_even,
1479                                        zr->jpg_settings.field_per_buff,
1480                                        zr->JPEG_missed);
1481
1482                                 strcpy(sv, sc);
1483                                 for (i = 0; i < 4; i++) {
1484                                         if (le32_to_cpu(zr->stat_com[i]) & 1)
1485                                                 sv[i] = '1';
1486                                 }
1487                                 sv[4] = 0;
1488                                 printk(KERN_INFO
1489                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1490                                        ZR_DEVNAME(zr), sv,
1491                                        zr->jpg_que_tail,
1492                                        zr->jpg_dma_tail,
1493                                        zr->jpg_dma_head,
1494                                        zr->jpg_que_head);
1495                         } else {
1496                                 /* Get statistics */
1497                                 if (zr->JPEG_missed > zr->JPEG_max_missed)
1498                                         zr->JPEG_max_missed = zr->JPEG_missed;
1499                                 if (zr->JPEG_missed < zr->JPEG_min_missed)
1500                                         zr->JPEG_min_missed = zr->JPEG_missed;
1501                         }
1502
1503                         if (zr36067_debug > 2 && zr->frame_num < 6) {
1504                                 int i;
1505
1506                                 printk(KERN_INFO "%s: seq=%ld stat_com:",
1507                                        ZR_DEVNAME(zr), zr->jpg_seq_num);
1508                                 for (i = 0; i < 4; i++) {
1509                                         printk(KERN_CONT " %08x",
1510                                                le32_to_cpu(zr->stat_com[i]));
1511                                 }
1512                                 printk(KERN_CONT "\n");
1513                         }
1514                         zr->frame_num++;
1515                         zr->JPEG_missed = 0;
1516                         zr->JPEG_error = 0;
1517                         zoran_reap_stat_com(zr);
1518                         zoran_feed_stat_com(zr);
1519                         wake_up_interruptible(&zr->jpg_capq);
1520                 }
1521 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1522
1523                 /* DATERR, too many fields missed, error processing */
1524                 if ((astat & zr->card.jpeg_int) ||
1525                     zr->JPEG_missed > 25 ||
1526                     zr->JPEG_error == 1 ||
1527                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1528                      (zr->frame_num & (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1529                         error_handler(zr, astat, stat);
1530                 }
1531
1532                 count++;
1533                 if (count > 10) {
1534                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1535                                 ZR_DEVNAME(zr), count);
1536                         if (count > 20) {
1537                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1538                                 dprintk(2,
1539                                         KERN_ERR
1540                                         "%s: IRQ lockup, cleared int mask\n",
1541                                         ZR_DEVNAME(zr));
1542                                 break;
1543                         }
1544                 }
1545                 zr->last_isr = stat;
1546         }
1547         spin_unlock_irqrestore(&zr->spinlock, flags);
1548
1549         return IRQ_HANDLED;
1550 }
1551
1552 void
1553 zoran_set_pci_master (struct zoran *zr,
1554                       int           set_master)
1555 {
1556         if (set_master) {
1557                 pci_set_master(zr->pci_dev);
1558         } else {
1559                 u16 command;
1560
1561                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1562                 command &= ~PCI_COMMAND_MASTER;
1563                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1564         }
1565 }
1566
1567 void
1568 zoran_init_hardware (struct zoran *zr)
1569 {
1570         /* Enable bus-mastering */
1571         zoran_set_pci_master(zr, 1);
1572
1573         /* Initialize the board */
1574         if (zr->card.init) {
1575                 zr->card.init(zr);
1576         }
1577
1578         decoder_call(zr, core, init, 0);
1579         decoder_call(zr, core, s_std, zr->norm);
1580         decoder_call(zr, video, s_routing,
1581                 zr->card.input[zr->input].muxsel, 0, 0);
1582
1583         encoder_call(zr, core, init, 0);
1584         encoder_call(zr, video, s_std_output, zr->norm);
1585         encoder_call(zr, video, s_routing, 0, 0, 0);
1586
1587         /* toggle JPEG codec sleep to sync PLL */
1588         jpeg_codec_sleep(zr, 1);
1589         jpeg_codec_sleep(zr, 0);
1590
1591         /* set individual interrupt enables (without GIRQ1)
1592          * but don't global enable until zoran_open() */
1593
1594         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1595         // It looks like using only JPEGRepIRQEn is not always reliable,
1596         // may be when JPEG codec crashes it won't generate IRQ? So,
1597          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1598             zr36057_init_vfe(zr);
1599
1600         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1601
1602         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1603 }
1604
1605 void
1606 zr36057_restart (struct zoran *zr)
1607 {
1608         btwrite(0, ZR36057_SPGPPCR);
1609         mdelay(1);
1610         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1611         mdelay(1);
1612
1613         /* assert P_Reset */
1614         btwrite(0, ZR36057_JPC);
1615         /* set up GPIO direction - all output */
1616         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1617
1618         /* set up GPIO pins and guest bus timing */
1619         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1620 }
1621
1622 /*
1623  * initialize video front end
1624  */
1625
1626 static void
1627 zr36057_init_vfe (struct zoran *zr)
1628 {
1629         u32 reg;
1630
1631         reg = btread(ZR36057_VFESPFR);
1632         reg |= ZR36057_VFESPFR_LittleEndian;
1633         reg &= ~ZR36057_VFESPFR_VCLKPol;
1634         reg |= ZR36057_VFESPFR_ExtFl;
1635         reg |= ZR36057_VFESPFR_TopField;
1636         btwrite(reg, ZR36057_VFESPFR);
1637         reg = btread(ZR36057_VDCR);
1638         if (pci_pci_problems & PCIPCI_TRITON)
1639                 // || zr->revision < 1) // Revision 1 has also Triton support
1640                 reg &= ~ZR36057_VDCR_Triton;
1641         else
1642                 reg |= ZR36057_VDCR_Triton;
1643         btwrite(reg, ZR36057_VDCR);
1644 }