V4L/DVB (10247): saa7134: convert to the new v4l2 framework.
[linux-2.6] / 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/videodev.h>
40 #include <linux/spinlock.h>
41 #include <linux/sem.h>
42
43 #include <linux/pci.h>
44 #include <linux/video_decoder.h>
45 #include <linux/video_encoder.h>
46 #include <linux/delay.h>
47 #include <linux/wait.h>
48
49 #include <asm/byteorder.h>
50 #include <asm/io.h>
51
52 #include "videocodec.h"
53 #include "zoran.h"
54 #include "zoran_device.h"
55 #include "zoran_card.h"
56
57 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
58                    ZR36057_ISR_GIRQ1 | \
59                    ZR36057_ISR_JPEGRepIRQ )
60
61 static int lml33dpath;          /* default = 0
62                                  * 1 will use digital path in capture
63                                  * mode instead of analog. It can be
64                                  * used for picture adjustments using
65                                  * tool like xawtv while watching image
66                                  * on TV monitor connected to the output.
67                                  * However, due to absence of 75 Ohm
68                                  * load on Bt819 input, there will be
69                                  * some image imperfections */
70
71 module_param(lml33dpath, bool, 0644);
72 MODULE_PARM_DESC(lml33dpath,
73                  "Use digital path capture mode (on LML33 cards)");
74
75 static void
76 zr36057_init_vfe (struct zoran *zr);
77
78 /*
79  * General Purpose I/O and Guest bus access
80  */
81
82 /*
83  * This is a bit tricky. When a board lacks a GPIO function, the corresponding
84  * GPIO bit number in the card_info structure is set to 0.
85  */
86
87 void
88 GPIO (struct zoran *zr,
89       int           bit,
90       unsigned int  value)
91 {
92         u32 reg;
93         u32 mask;
94
95         /* Make sure the bit number is legal
96          * A bit number of -1 (lacking) gives a mask of 0,
97          * making it harmless */
98         mask = (1 << (24 + bit)) & 0xff000000;
99         reg = btread(ZR36057_GPPGCR1) & ~mask;
100         if (value) {
101                 reg |= mask;
102         }
103         btwrite(reg, ZR36057_GPPGCR1);
104         udelay(1);
105 }
106
107 /*
108  * Wait til post office is no longer busy
109  */
110
111 int
112 post_office_wait (struct zoran *zr)
113 {
114         u32 por;
115
116 //      while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
117         while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
118                 /* wait for something to happen */
119         }
120         if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
121                 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
122                 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
123                         por);
124                 return -1;
125         }
126
127         return 0;
128 }
129
130 int
131 post_office_write (struct zoran *zr,
132                    unsigned int  guest,
133                    unsigned int  reg,
134                    unsigned int  value)
135 {
136         u32 por;
137
138         por =
139             ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
140             ((reg & 7) << 16) | (value & 0xFF);
141         btwrite(por, ZR36057_POR);
142
143         return post_office_wait(zr);
144 }
145
146 int
147 post_office_read (struct zoran *zr,
148                   unsigned int  guest,
149                   unsigned int  reg)
150 {
151         u32 por;
152
153         por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
154         btwrite(por, ZR36057_POR);
155         if (post_office_wait(zr) < 0) {
156                 return -1;
157         }
158
159         return btread(ZR36057_POR) & 0xFF;
160 }
161
162 /*
163  * detect guests
164  */
165
166 static void
167 dump_guests (struct zoran *zr)
168 {
169         if (zr36067_debug > 2) {
170                 int i, guest[8];
171
172                 for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
173                         guest[i] = post_office_read(zr, i, 0);
174                 }
175
176                 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
177
178                 for (i = 1; i < 8; i++) {
179                         printk(" 0x%02x", guest[i]);
180                 }
181                 printk("\n");
182         }
183 }
184
185 static inline unsigned long
186 get_time (void)
187 {
188         struct timeval tv;
189
190         do_gettimeofday(&tv);
191         return (1000000 * tv.tv_sec + tv.tv_usec);
192 }
193
194 void
195 detect_guest_activity (struct zoran *zr)
196 {
197         int timeout, i, j, res, guest[8], guest0[8], change[8][3];
198         unsigned long t0, t1;
199
200         dump_guests(zr);
201         printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
202                ZR_DEVNAME(zr));
203         for (i = 1; i < 8; i++) {       // Don't read jpeg codec here
204                 guest0[i] = guest[i] = post_office_read(zr, i, 0);
205         }
206
207         timeout = 0;
208         j = 0;
209         t0 = get_time();
210         while (timeout < 10000) {
211                 udelay(10);
212                 timeout++;
213                 for (i = 1; (i < 8) && (j < 8); i++) {
214                         res = post_office_read(zr, i, 0);
215                         if (res != guest[i]) {
216                                 t1 = get_time();
217                                 change[j][0] = (t1 - t0);
218                                 t0 = t1;
219                                 change[j][1] = i;
220                                 change[j][2] = res;
221                                 j++;
222                                 guest[i] = res;
223                         }
224                 }
225                 if (j >= 8)
226                         break;
227         }
228         printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
229
230         for (i = 1; i < 8; i++) {
231                 printk(" 0x%02x", guest0[i]);
232         }
233         printk("\n");
234         if (j == 0) {
235                 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
236                 return;
237         }
238         for (i = 0; i < j; i++) {
239                 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
240                        change[i][0], change[i][1], change[i][2]);
241         }
242 }
243
244 /*
245  * JPEG Codec access
246  */
247
248 void
249 jpeg_codec_sleep (struct zoran *zr,
250                   int           sleep)
251 {
252         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
253         if (!sleep) {
254                 dprintk(3,
255                         KERN_DEBUG
256                         "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
257                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
258                 udelay(500);
259         } else {
260                 dprintk(3,
261                         KERN_DEBUG
262                         "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
263                         ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
264                 udelay(2);
265         }
266 }
267
268 int
269 jpeg_codec_reset (struct zoran *zr)
270 {
271         /* Take the codec out of sleep */
272         jpeg_codec_sleep(zr, 0);
273
274         if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
275                 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
276                                   0);
277                 udelay(2);
278         } else {
279                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
280                 udelay(2);
281                 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
282                 udelay(2);
283         }
284
285         return 0;
286 }
287
288 /*
289  *   Set the registers for the size we have specified. Don't bother
290  *   trying to understand this without the ZR36057 manual in front of
291  *   you [AC].
292  *
293  *   PS: The manual is free for download in .pdf format from
294  *   www.zoran.com - nicely done those folks.
295  */
296
297 static void
298 zr36057_adjust_vfe (struct zoran          *zr,
299                     enum zoran_codec_mode  mode)
300 {
301         u32 reg;
302
303         switch (mode) {
304         case BUZ_MODE_MOTION_DECOMPRESS:
305                 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
306                 reg = btread(ZR36057_VFEHCR);
307                 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
308                         reg += ((1 << 10) | 1);
309                 }
310                 btwrite(reg, ZR36057_VFEHCR);
311                 break;
312         case BUZ_MODE_MOTION_COMPRESS:
313         case BUZ_MODE_IDLE:
314         default:
315                 if (zr->norm == VIDEO_MODE_NTSC ||
316                     (zr->card.type == LML33R10 &&
317                      zr->norm == VIDEO_MODE_PAL))
318                         btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
319                 else
320                         btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
321                 reg = btread(ZR36057_VFEHCR);
322                 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
323                         reg -= ((1 << 10) | 1);
324                 }
325                 btwrite(reg, ZR36057_VFEHCR);
326                 break;
327         }
328 }
329
330 /*
331  * set geometry
332  */
333
334 static void
335 zr36057_set_vfe (struct zoran              *zr,
336                  int                        video_width,
337                  int                        video_height,
338                  const struct zoran_format *format)
339 {
340         struct tvnorm *tvn;
341         unsigned HStart, HEnd, VStart, VEnd;
342         unsigned DispMode;
343         unsigned VidWinWid, VidWinHt;
344         unsigned hcrop1, hcrop2, vcrop1, vcrop2;
345         unsigned Wa, We, Ha, He;
346         unsigned X, Y, HorDcm, VerDcm;
347         u32 reg;
348         unsigned mask_line_size;
349
350         tvn = zr->timing;
351
352         Wa = tvn->Wa;
353         Ha = tvn->Ha;
354
355         dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
356                 ZR_DEVNAME(zr), video_width, video_height);
357
358         if (zr->norm != VIDEO_MODE_PAL &&
359             zr->norm != VIDEO_MODE_NTSC &&
360             zr->norm != VIDEO_MODE_SECAM) {
361                 dprintk(1,
362                         KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
363                         ZR_DEVNAME(zr), zr->norm);
364                 return;
365         }
366         if (video_width < BUZ_MIN_WIDTH ||
367             video_height < BUZ_MIN_HEIGHT ||
368             video_width > Wa || video_height > Ha) {
369                 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
370                         ZR_DEVNAME(zr), video_width, video_height);
371                 return;
372         }
373
374         /**** zr36057 ****/
375
376         /* horizontal */
377         VidWinWid = video_width;
378         X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
379         We = (VidWinWid * 64) / X;
380         HorDcm = 64 - X;
381         hcrop1 = 2 * ((tvn->Wa - We) / 4);
382         hcrop2 = tvn->Wa - We - hcrop1;
383         HStart = tvn->HStart ? tvn->HStart : 1;
384         /* (Ronald) Original comment:
385          * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
386          * this is false. It inverses chroma values on the LML33R10 (so Cr
387          * suddenly is shown as Cb and reverse, really cool effect if you
388          * want to see blue faces, not useful otherwise). So don't use |1.
389          * However, the DC10 has '0' as HStart, but does need |1, so we
390          * use a dirty check...
391          */
392         HEnd = HStart + tvn->Wa - 1;
393         HStart += hcrop1;
394         HEnd -= hcrop2;
395         reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
396             | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
397         if (zr->card.vfe_pol.hsync_pol)
398                 reg |= ZR36057_VFEHCR_HSPol;
399         btwrite(reg, ZR36057_VFEHCR);
400
401         /* Vertical */
402         DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
403         VidWinHt = DispMode ? video_height : video_height / 2;
404         Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
405         He = (VidWinHt * 64) / Y;
406         VerDcm = 64 - Y;
407         vcrop1 = (tvn->Ha / 2 - He) / 2;
408         vcrop2 = tvn->Ha / 2 - He - vcrop1;
409         VStart = tvn->VStart;
410         VEnd = VStart + tvn->Ha / 2;    // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
411         VStart += vcrop1;
412         VEnd -= vcrop2;
413         reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
414             | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
415         if (zr->card.vfe_pol.vsync_pol)
416                 reg |= ZR36057_VFEVCR_VSPol;
417         btwrite(reg, ZR36057_VFEVCR);
418
419         /* scaler and pixel format */
420         reg = 0;
421         reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
422         reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
423         reg |= (DispMode << ZR36057_VFESPFR_DispMode);
424         /* RJ: I don't know, why the following has to be the opposite
425          * of the corresponding ZR36060 setting, but only this way
426          * we get the correct colors when uncompressing to the screen  */
427         //reg |= ZR36057_VFESPFR_VCLKPol; /**/
428         /* RJ: Don't know if that is needed for NTSC also */
429         if (zr->norm != VIDEO_MODE_NTSC)
430                 reg |= ZR36057_VFESPFR_ExtFl;   // NEEDED!!!!!!! Wolfgang
431         reg |= ZR36057_VFESPFR_TopField;
432         if (HorDcm >= 48) {
433                 reg |= 3 << ZR36057_VFESPFR_HFilter;    /* 5 tap filter */
434         } else if (HorDcm >= 32) {
435                 reg |= 2 << ZR36057_VFESPFR_HFilter;    /* 4 tap filter */
436         } else if (HorDcm >= 16) {
437                 reg |= 1 << ZR36057_VFESPFR_HFilter;    /* 3 tap filter */
438         }
439         reg |= format->vfespfr;
440         btwrite(reg, ZR36057_VFESPFR);
441
442         /* display configuration */
443         reg = (16 << ZR36057_VDCR_MinPix)
444             | (VidWinHt << ZR36057_VDCR_VidWinHt)
445             | (VidWinWid << ZR36057_VDCR_VidWinWid);
446         if (pci_pci_problems & PCIPCI_TRITON)
447                 // || zr->revision < 1) // Revision 1 has also Triton support
448                 reg &= ~ZR36057_VDCR_Triton;
449         else
450                 reg |= ZR36057_VDCR_Triton;
451         btwrite(reg, ZR36057_VDCR);
452
453         /* (Ronald) don't write this if overlay_mask = NULL */
454         if (zr->overlay_mask) {
455                 /* Write overlay clipping mask data, but don't enable overlay clipping */
456                 /* RJ: since this makes only sense on the screen, we use
457                  * zr->overlay_settings.width instead of video_width */
458
459                 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
460                 reg = virt_to_bus(zr->overlay_mask);
461                 btwrite(reg, ZR36057_MMTR);
462                 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
463                 btwrite(reg, ZR36057_MMBR);
464                 reg =
465                     mask_line_size - (zr->overlay_settings.width +
466                                       31) / 32;
467                 if (DispMode == 0)
468                         reg += mask_line_size;
469                 reg <<= ZR36057_OCR_MaskStride;
470                 btwrite(reg, ZR36057_OCR);
471         }
472
473         zr36057_adjust_vfe(zr, zr->codec_mode);
474 }
475
476 /*
477  * Switch overlay on or off
478  */
479
480 void
481 zr36057_overlay (struct zoran *zr,
482                  int           on)
483 {
484         u32 reg;
485
486         if (on) {
487                 /* do the necessary settings ... */
488                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);       /* switch it off first */
489
490                 zr36057_set_vfe(zr,
491                                 zr->overlay_settings.width,
492                                 zr->overlay_settings.height,
493                                 zr->overlay_settings.format);
494
495                 /* Start and length of each line MUST be 4-byte aligned.
496                  * This should be allready checked before the call to this routine.
497                  * All error messages are internal driver checking only! */
498
499                 /* video display top and bottom registers */
500                 reg = (long) zr->buffer.base +
501                     zr->overlay_settings.x *
502                     ((zr->overlay_settings.format->depth + 7) / 8) +
503                     zr->overlay_settings.y *
504                     zr->buffer.bytesperline;
505                 btwrite(reg, ZR36057_VDTR);
506                 if (reg & 3)
507                         dprintk(1,
508                                 KERN_ERR
509                                 "%s: zr36057_overlay() - video_address not aligned\n",
510                                 ZR_DEVNAME(zr));
511                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
512                         reg += zr->buffer.bytesperline;
513                 btwrite(reg, ZR36057_VDBR);
514
515                 /* video stride, status, and frame grab register */
516                 reg = zr->buffer.bytesperline -
517                     zr->overlay_settings.width *
518                     ((zr->overlay_settings.format->depth + 7) / 8);
519                 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
520                         reg += zr->buffer.bytesperline;
521                 if (reg & 3)
522                         dprintk(1,
523                                 KERN_ERR
524                                 "%s: zr36057_overlay() - video_stride not aligned\n",
525                                 ZR_DEVNAME(zr));
526                 reg = (reg << ZR36057_VSSFGR_DispStride);
527                 reg |= ZR36057_VSSFGR_VidOvf;   /* clear overflow status */
528                 btwrite(reg, ZR36057_VSSFGR);
529
530                 /* Set overlay clipping */
531                 if (zr->overlay_settings.clipcount > 0)
532                         btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
533
534                 /* ... and switch it on */
535                 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
536         } else {
537                 /* Switch it off */
538                 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
539         }
540 }
541
542 /*
543  * The overlay mask has one bit for each pixel on a scan line,
544  *  and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
545  */
546
547 void
548 write_overlay_mask (struct file       *file,
549                     struct video_clip *vp,
550                     int                count)
551 {
552         struct zoran_fh *fh = file->private_data;
553         struct zoran *zr = fh->zr;
554         unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
555         u32 *mask;
556         int x, y, width, height;
557         unsigned i, j, k;
558         u32 reg;
559
560         /* fill mask with one bits */
561         memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
562         reg = 0;
563
564         for (i = 0; i < count; ++i) {
565                 /* pick up local copy of clip */
566                 x = vp[i].x;
567                 y = vp[i].y;
568                 width = vp[i].width;
569                 height = vp[i].height;
570
571                 /* trim clips that extend beyond the window */
572                 if (x < 0) {
573                         width += x;
574                         x = 0;
575                 }
576                 if (y < 0) {
577                         height += y;
578                         y = 0;
579                 }
580                 if (x + width > fh->overlay_settings.width) {
581                         width = fh->overlay_settings.width - x;
582                 }
583                 if (y + height > fh->overlay_settings.height) {
584                         height = fh->overlay_settings.height - y;
585                 }
586
587                 /* ignore degenerate clips */
588                 if (height <= 0) {
589                         continue;
590                 }
591                 if (width <= 0) {
592                         continue;
593                 }
594
595                 /* apply clip for each scan line */
596                 for (j = 0; j < height; ++j) {
597                         /* reset bit for each pixel */
598                         /* this can be optimized later if need be */
599                         mask = fh->overlay_mask + (y + j) * mask_line_size;
600                         for (k = 0; k < width; ++k) {
601                                 mask[(x + k) / 32] &=
602                                     ~((u32) 1 << (x + k) % 32);
603                         }
604                 }
605         }
606 }
607
608 /* Enable/Disable uncompressed memory grabbing of the 36057 */
609
610 void
611 zr36057_set_memgrab (struct zoran *zr,
612                      int           mode)
613 {
614         if (mode) {
615                 /* We only check SnapShot and not FrameGrab here.  SnapShot==1
616                  * means a capture is already in progress, but FrameGrab==1
617                  * doesn't necessary mean that.  It's more correct to say a 1
618                  * to 0 transition indicates a capture completed.  If a
619                  * capture is pending when capturing is tuned off, FrameGrab
620                  * will be stuck at 1 until capturing is turned back on.
621                  */
622                 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
623                         dprintk(1,
624                                 KERN_WARNING
625                                 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
626                                 ZR_DEVNAME(zr));
627
628                 /* switch on VSync interrupts */
629                 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
630                 btor(zr->card.vsync_int, ZR36057_ICR);  // SW
631
632                 /* enable SnapShot */
633                 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
634
635                 /* Set zr36057 video front end  and enable video */
636                 zr36057_set_vfe(zr, zr->v4l_settings.width,
637                                 zr->v4l_settings.height,
638                                 zr->v4l_settings.format);
639
640                 zr->v4l_memgrab_active = 1;
641         } else {
642                 /* switch off VSync interrupts */
643                 btand(~zr->card.vsync_int, ZR36057_ICR);        // SW
644
645                 zr->v4l_memgrab_active = 0;
646                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
647
648                 /* reenable grabbing to screen if it was running */
649                 if (zr->v4l_overlay_active) {
650                         zr36057_overlay(zr, 1);
651                 } else {
652                         btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
653                         btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
654                 }
655         }
656 }
657
658 int
659 wait_grab_pending (struct zoran *zr)
660 {
661         unsigned long flags;
662
663         /* wait until all pending grabs are finished */
664
665         if (!zr->v4l_memgrab_active)
666                 return 0;
667
668         wait_event_interruptible(zr->v4l_capq,
669                         (zr->v4l_pend_tail == zr->v4l_pend_head));
670         if (signal_pending(current))
671                 return -ERESTARTSYS;
672
673         spin_lock_irqsave(&zr->spinlock, flags);
674         zr36057_set_memgrab(zr, 0);
675         spin_unlock_irqrestore(&zr->spinlock, flags);
676
677         return 0;
678 }
679
680 /*****************************************************************************
681  *                                                                           *
682  *  Set up the Buz-specific MJPEG part                                       *
683  *                                                                           *
684  *****************************************************************************/
685
686 static inline void
687 set_frame (struct zoran *zr,
688            int           val)
689 {
690         GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
691 }
692
693 static void
694 set_videobus_dir (struct zoran *zr,
695                   int           val)
696 {
697         switch (zr->card.type) {
698         case LML33:
699         case LML33R10:
700                 if (lml33dpath == 0)
701                         GPIO(zr, 5, val);
702                 else
703                         GPIO(zr, 5, 1);
704                 break;
705         default:
706                 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
707                      zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
708                 break;
709         }
710 }
711
712 static void
713 init_jpeg_queue (struct zoran *zr)
714 {
715         int i;
716
717         /* re-initialize DMA ring stuff */
718         zr->jpg_que_head = 0;
719         zr->jpg_dma_head = 0;
720         zr->jpg_dma_tail = 0;
721         zr->jpg_que_tail = 0;
722         zr->jpg_seq_num = 0;
723         zr->JPEG_error = 0;
724         zr->num_errors = 0;
725         zr->jpg_err_seq = 0;
726         zr->jpg_err_shift = 0;
727         zr->jpg_queued_num = 0;
728         for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
729                 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
730         }
731         for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
732                 zr->stat_com[i] = cpu_to_le32(1);       /* mark as unavailable to zr36057 */
733         }
734 }
735
736 static void
737 zr36057_set_jpg (struct zoran          *zr,
738                  enum zoran_codec_mode  mode)
739 {
740         struct tvnorm *tvn;
741         u32 reg;
742
743         tvn = zr->timing;
744
745         /* assert P_Reset, disable code transfer, deassert Active */
746         btwrite(0, ZR36057_JPC);
747
748         /* MJPEG compression mode */
749         switch (mode) {
750
751         case BUZ_MODE_MOTION_COMPRESS:
752         default:
753                 reg = ZR36057_JMC_MJPGCmpMode;
754                 break;
755
756         case BUZ_MODE_MOTION_DECOMPRESS:
757                 reg = ZR36057_JMC_MJPGExpMode;
758                 reg |= ZR36057_JMC_SyncMstr;
759                 /* RJ: The following is experimental - improves the output to screen */
760                 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
761                 break;
762
763         case BUZ_MODE_STILL_COMPRESS:
764                 reg = ZR36057_JMC_JPGCmpMode;
765                 break;
766
767         case BUZ_MODE_STILL_DECOMPRESS:
768                 reg = ZR36057_JMC_JPGExpMode;
769                 break;
770
771         }
772         reg |= ZR36057_JMC_JPG;
773         if (zr->jpg_settings.field_per_buff == 1)
774                 reg |= ZR36057_JMC_Fld_per_buff;
775         btwrite(reg, ZR36057_JMC);
776
777         /* vertical */
778         btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
779         reg = (6 << ZR36057_VSP_VsyncSize) |
780               (tvn->Ht << ZR36057_VSP_FrmTot);
781         btwrite(reg, ZR36057_VSP);
782         reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
783               (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
784         btwrite(reg, ZR36057_FVAP);
785
786         /* horizontal */
787         if (zr->card.vfe_pol.hsync_pol)
788                 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
789         else
790                 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
791         reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
792               (tvn->Wt << ZR36057_HSP_LineTot);
793         btwrite(reg, ZR36057_HSP);
794         reg = ((zr->jpg_settings.img_x +
795                 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
796               (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
797         btwrite(reg, ZR36057_FHAP);
798
799         /* field process parameters */
800         if (zr->jpg_settings.odd_even)
801                 reg = ZR36057_FPP_Odd_Even;
802         else
803                 reg = 0;
804
805         btwrite(reg, ZR36057_FPP);
806
807         /* Set proper VCLK Polarity, else colors will be wrong during playback */
808         //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
809
810         /* code base address */
811         reg = virt_to_bus(zr->stat_com);
812         btwrite(reg, ZR36057_JCBA);
813
814         /* FIFO threshold (FIFO is 160. double words) */
815         /* NOTE: decimal values here */
816         switch (mode) {
817
818         case BUZ_MODE_STILL_COMPRESS:
819         case BUZ_MODE_MOTION_COMPRESS:
820                 if (zr->card.type != BUZ)
821                         reg = 140;
822                 else
823                         reg = 60;
824                 break;
825
826         case BUZ_MODE_STILL_DECOMPRESS:
827         case BUZ_MODE_MOTION_DECOMPRESS:
828                 reg = 20;
829                 break;
830
831         default:
832                 reg = 80;
833                 break;
834
835         }
836         btwrite(reg, ZR36057_JCFT);
837         zr36057_adjust_vfe(zr, mode);
838
839 }
840
841 void
842 print_interrupts (struct zoran *zr)
843 {
844         int res, noerr = 0;
845
846         printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
847         if ((res = zr->field_counter) < -1 || res > 1) {
848                 printk(" FD:%d", res);
849         }
850         if ((res = zr->intr_counter_GIRQ1) != 0) {
851                 printk(" GIRQ1:%d", res);
852                 noerr++;
853         }
854         if ((res = zr->intr_counter_GIRQ0) != 0) {
855                 printk(" GIRQ0:%d", res);
856                 noerr++;
857         }
858         if ((res = zr->intr_counter_CodRepIRQ) != 0) {
859                 printk(" CodRepIRQ:%d", res);
860                 noerr++;
861         }
862         if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
863                 printk(" JPEGRepIRQ:%d", res);
864                 noerr++;
865         }
866         if (zr->JPEG_max_missed) {
867                 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
868                        zr->JPEG_min_missed);
869         }
870         if (zr->END_event_missed) {
871                 printk(" ENDs missed: %d", zr->END_event_missed);
872         }
873         //if (zr->jpg_queued_num) {
874         printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
875                zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
876         //}
877         if (!noerr) {
878                 printk(": no interrupts detected.");
879         }
880         printk("\n");
881 }
882
883 void
884 clear_interrupt_counters (struct zoran *zr)
885 {
886         zr->intr_counter_GIRQ1 = 0;
887         zr->intr_counter_GIRQ0 = 0;
888         zr->intr_counter_CodRepIRQ = 0;
889         zr->intr_counter_JPEGRepIRQ = 0;
890         zr->field_counter = 0;
891         zr->IRQ1_in = 0;
892         zr->IRQ1_out = 0;
893         zr->JPEG_in = 0;
894         zr->JPEG_out = 0;
895         zr->JPEG_0 = 0;
896         zr->JPEG_1 = 0;
897         zr->END_event_missed = 0;
898         zr->JPEG_missed = 0;
899         zr->JPEG_max_missed = 0;
900         zr->JPEG_min_missed = 0x7fffffff;
901 }
902
903 static u32
904 count_reset_interrupt (struct zoran *zr)
905 {
906         u32 isr;
907
908         if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
909                 if (isr & ZR36057_ISR_GIRQ1) {
910                         btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
911                         zr->intr_counter_GIRQ1++;
912                 }
913                 if (isr & ZR36057_ISR_GIRQ0) {
914                         btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
915                         zr->intr_counter_GIRQ0++;
916                 }
917                 if (isr & ZR36057_ISR_CodRepIRQ) {
918                         btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
919                         zr->intr_counter_CodRepIRQ++;
920                 }
921                 if (isr & ZR36057_ISR_JPEGRepIRQ) {
922                         btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
923                         zr->intr_counter_JPEGRepIRQ++;
924                 }
925         }
926         return isr;
927 }
928
929 void
930 jpeg_start (struct zoran *zr)
931 {
932         int reg;
933
934         zr->frame_num = 0;
935
936         /* deassert P_reset, disable code transfer, deassert Active */
937         btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
938         /* stop flushing the internal code buffer */
939         btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
940         /* enable code transfer */
941         btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
942
943         /* clear IRQs */
944         btwrite(IRQ_MASK, ZR36057_ISR);
945         /* enable the JPEG IRQs */
946         btwrite(zr->card.jpeg_int |
947                         ZR36057_ICR_JPEGRepIRQ |
948                         ZR36057_ICR_IntPinEn,
949                 ZR36057_ICR);
950
951         set_frame(zr, 0);       // \FRAME
952
953         /* set the JPEG codec guest ID */
954         reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
955                (0 << ZR36057_JCGI_JPEGuestReg);
956         btwrite(reg, ZR36057_JCGI);
957
958         if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
959             zr->card.video_codec == CODEC_TYPE_ZR36050) {
960                 /* Enable processing on the ZR36016 */
961                 if (zr->vfe)
962                         zr36016_write(zr->vfe, 0, 1);
963
964                 /* load the address of the GO register in the ZR36050 latch */
965                 post_office_write(zr, 0, 0, 0);
966         }
967
968         /* assert Active */
969         btor(ZR36057_JPC_Active, ZR36057_JPC);
970
971         /* enable the Go generation */
972         btor(ZR36057_JMC_Go_en, ZR36057_JMC);
973         udelay(30);
974
975         set_frame(zr, 1);       // /FRAME
976
977         dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
978 }
979
980 void
981 zr36057_enable_jpg (struct zoran          *zr,
982                     enum zoran_codec_mode  mode)
983 {
984         static int zero;
985         static int one = 1;
986         struct vfe_settings cap;
987         int field_size =
988             zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
989
990         zr->codec_mode = mode;
991
992         cap.x = zr->jpg_settings.img_x;
993         cap.y = zr->jpg_settings.img_y;
994         cap.width = zr->jpg_settings.img_width;
995         cap.height = zr->jpg_settings.img_height;
996         cap.decimation =
997             zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
998         cap.quality = zr->jpg_settings.jpg_comp.quality;
999
1000         switch (mode) {
1001
1002         case BUZ_MODE_MOTION_COMPRESS: {
1003                 struct jpeg_app_marker app;
1004                 struct jpeg_com_marker com;
1005
1006                 /* In motion compress mode, the decoder output must be enabled, and
1007                  * the video bus direction set to input.
1008                  */
1009                 set_videobus_dir(zr, 0);
1010                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1011                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1012
1013                 /* Take the JPEG codec and the VFE out of sleep */
1014                 jpeg_codec_sleep(zr, 0);
1015
1016                 /* set JPEG app/com marker */
1017                 app.appn = zr->jpg_settings.jpg_comp.APPn;
1018                 app.len = zr->jpg_settings.jpg_comp.APP_len;
1019                 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1020                 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1021                                    sizeof(struct jpeg_app_marker), &app);
1022
1023                 com.len = zr->jpg_settings.jpg_comp.COM_len;
1024                 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1025                 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1026                                    sizeof(struct jpeg_com_marker), &com);
1027
1028                 /* Setup the JPEG codec */
1029                 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1030                                    sizeof(int), &field_size);
1031                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1032                                      &zr->card.vfe_pol);
1033                 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1034
1035                 /* Setup the VFE */
1036                 if (zr->vfe) {
1037                         zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1038                                          sizeof(int), &field_size);
1039                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1040                                            &zr->card.vfe_pol);
1041                         zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1042                 }
1043
1044                 init_jpeg_queue(zr);
1045                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1046
1047                 clear_interrupt_counters(zr);
1048                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1049                         ZR_DEVNAME(zr));
1050                 break;
1051         }
1052
1053         case BUZ_MODE_MOTION_DECOMPRESS:
1054                 /* In motion decompression mode, the decoder output must be disabled, and
1055                  * the video bus direction set to output.
1056                  */
1057                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1058                 set_videobus_dir(zr, 1);
1059                 encoder_command(zr, ENCODER_SET_INPUT, &one);
1060
1061                 /* Take the JPEG codec and the VFE out of sleep */
1062                 jpeg_codec_sleep(zr, 0);
1063                 /* Setup the VFE */
1064                 if (zr->vfe) {
1065                         zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1066                                            &zr->card.vfe_pol);
1067                         zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1068                 }
1069                 /* Setup the JPEG codec */
1070                 zr->codec->set_video(zr->codec, zr->timing, &cap,
1071                                      &zr->card.vfe_pol);
1072                 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1073
1074                 init_jpeg_queue(zr);
1075                 zr36057_set_jpg(zr, mode);      // \P_Reset, ... Video param, FIFO
1076
1077                 clear_interrupt_counters(zr);
1078                 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1079                         ZR_DEVNAME(zr));
1080                 break;
1081
1082         case BUZ_MODE_IDLE:
1083         default:
1084                 /* shut down processing */
1085                 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1086                       ZR36057_ICR);
1087                 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1088                         ZR36057_ISR);
1089                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1090
1091                 msleep(50);
1092
1093                 set_videobus_dir(zr, 0);
1094                 set_frame(zr, 1);       // /FRAME
1095                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);      // /CFlush
1096                 btwrite(0, ZR36057_JPC);        // \P_Reset,\CodTrnsEn,\Active
1097                 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1098                 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1099                 jpeg_codec_reset(zr);
1100                 jpeg_codec_sleep(zr, 1);
1101                 zr36057_adjust_vfe(zr, mode);
1102
1103                 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1104                 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1105
1106                 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1107                 break;
1108
1109         }
1110 }
1111
1112 /* when this is called the spinlock must be held */
1113 void
1114 zoran_feed_stat_com (struct zoran *zr)
1115 {
1116         /* move frames from pending queue to DMA */
1117
1118         int frame, i, max_stat_com;
1119
1120         max_stat_com =
1121             (zr->jpg_settings.TmpDcm ==
1122              1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1123
1124         while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1125                zr->jpg_dma_head < zr->jpg_que_head) {
1126
1127                 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1128                 if (zr->jpg_settings.TmpDcm == 1) {
1129                         /* fill 1 stat_com entry */
1130                         i = (zr->jpg_dma_head -
1131                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1132                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1133                                 break;
1134                         zr->stat_com[i] =
1135                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1136                 } else {
1137                         /* fill 2 stat_com entries */
1138                         i = ((zr->jpg_dma_head -
1139                               zr->jpg_err_shift) & 1) * 2;
1140                         if (!(zr->stat_com[i] & cpu_to_le32(1)))
1141                                 break;
1142                         zr->stat_com[i] =
1143                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1144                         zr->stat_com[i + 1] =
1145                             cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1146                 }
1147                 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1148                 zr->jpg_dma_head++;
1149
1150         }
1151         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1152                 zr->jpg_queued_num++;
1153 }
1154
1155 /* when this is called the spinlock must be held */
1156 static void
1157 zoran_reap_stat_com (struct zoran *zr)
1158 {
1159         /* move frames from DMA queue to done queue */
1160
1161         int i;
1162         u32 stat_com;
1163         unsigned int seq;
1164         unsigned int dif;
1165         struct zoran_jpg_buffer *buffer;
1166         int frame;
1167
1168         /* In motion decompress we don't have a hardware frame counter,
1169          * we just count the interrupts here */
1170
1171         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1172                 zr->jpg_seq_num++;
1173         }
1174         while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1175                 if (zr->jpg_settings.TmpDcm == 1)
1176                         i = (zr->jpg_dma_tail -
1177                              zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1178                 else
1179                         i = ((zr->jpg_dma_tail -
1180                               zr->jpg_err_shift) & 1) * 2 + 1;
1181
1182                 stat_com = le32_to_cpu(zr->stat_com[i]);
1183
1184                 if ((stat_com & 1) == 0) {
1185                         return;
1186                 }
1187                 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1188                 buffer = &zr->jpg_buffers.buffer[frame];
1189                 do_gettimeofday(&buffer->bs.timestamp);
1190
1191                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1192                         buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1193
1194                         /* update sequence number with the help of the counter in stat_com */
1195
1196                         seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1197                         dif = (seq - zr->jpg_seq_num) & 0xff;
1198                         zr->jpg_seq_num += dif;
1199                 } else {
1200                         buffer->bs.length = 0;
1201                 }
1202                 buffer->bs.seq =
1203                     zr->jpg_settings.TmpDcm ==
1204                     2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1205                 buffer->state = BUZ_STATE_DONE;
1206
1207                 zr->jpg_dma_tail++;
1208         }
1209 }
1210
1211 static void
1212 error_handler (struct zoran *zr,
1213                u32           astat,
1214                u32           stat)
1215 {
1216         /* This is JPEG error handling part */
1217         if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1218             (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1219                 //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1220                 return;
1221         }
1222
1223         if ((stat & 1) == 0 &&
1224             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1225             zr->jpg_dma_tail - zr->jpg_que_tail >=
1226              zr->jpg_buffers.num_buffers) {
1227                 /* No free buffers... */
1228                 zoran_reap_stat_com(zr);
1229                 zoran_feed_stat_com(zr);
1230                 wake_up_interruptible(&zr->jpg_capq);
1231                 zr->JPEG_missed = 0;
1232                 return;
1233         }
1234
1235         if (zr->JPEG_error != 1) {
1236                 /*
1237                  * First entry: error just happened during normal operation
1238                  *
1239                  * In BUZ_MODE_MOTION_COMPRESS:
1240                  *
1241                  * Possible glitch in TV signal. In this case we should
1242                  * stop the codec and wait for good quality signal before
1243                  * restarting it to avoid further problems
1244                  *
1245                  * In BUZ_MODE_MOTION_DECOMPRESS:
1246                  *
1247                  * Bad JPEG frame: we have to mark it as processed (codec crashed
1248                  * and was not able to do it itself), and to remove it from queue.
1249                  */
1250                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1251                 udelay(1);
1252                 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1253                 btwrite(0, ZR36057_JPC);
1254                 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1255                 jpeg_codec_reset(zr);
1256                 jpeg_codec_sleep(zr, 1);
1257                 zr->JPEG_error = 1;
1258                 zr->num_errors++;
1259
1260                 /* Report error */
1261                 if (zr36067_debug > 1 && zr->num_errors <= 8) {
1262                         long frame;
1263                         frame =
1264                             zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1265                         printk(KERN_ERR
1266                                "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1267                                ZR_DEVNAME(zr), stat, zr->last_isr,
1268                                zr->jpg_que_tail, zr->jpg_dma_tail,
1269                                zr->jpg_dma_head, zr->jpg_que_head,
1270                                zr->jpg_seq_num, frame);
1271                         printk("stat_com frames:");
1272                         {
1273                                 int i, j;
1274                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1275                                         for (i = 0;
1276                                              i < zr->jpg_buffers.num_buffers;
1277                                              i++) {
1278                                                 if (le32_to_cpu(zr->stat_com[j]) ==
1279                                                     zr->jpg_buffers.
1280                                                     buffer[i].
1281                                                     frag_tab_bus) {
1282                                                         printk("% d->%d",
1283                                                                j, i);
1284                                                 }
1285                                         }
1286                                 }
1287                                 printk("\n");
1288                         }
1289                 }
1290                 /* Find an entry in stat_com and rotate contents */
1291                 {
1292                         int i;
1293
1294                         if (zr->jpg_settings.TmpDcm == 1)
1295                                 i = (zr->jpg_dma_tail -
1296                                      zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1297                         else
1298                                 i = ((zr->jpg_dma_tail -
1299                                       zr->jpg_err_shift) & 1) * 2;
1300                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1301                                 /* Mimic zr36067 operation */
1302                                 zr->stat_com[i] |= cpu_to_le32(1);
1303                                 if (zr->jpg_settings.TmpDcm != 1)
1304                                         zr->stat_com[i + 1] |= cpu_to_le32(1);
1305                                 /* Refill */
1306                                 zoran_reap_stat_com(zr);
1307                                 zoran_feed_stat_com(zr);
1308                                 wake_up_interruptible(&zr->jpg_capq);
1309                                 /* Find an entry in stat_com again after refill */
1310                                 if (zr->jpg_settings.TmpDcm == 1)
1311                                         i = (zr->jpg_dma_tail -
1312                                              zr->jpg_err_shift) &
1313                                             BUZ_MASK_STAT_COM;
1314                                 else
1315                                         i = ((zr->jpg_dma_tail -
1316                                               zr->jpg_err_shift) & 1) * 2;
1317                         }
1318                         if (i) {
1319                                 /* Rotate stat_comm entries to make current entry first */
1320                                 int j;
1321                                 __le32 bus_addr[BUZ_NUM_STAT_COM];
1322
1323                                 /* Here we are copying the stat_com array, which
1324                                  * is already in little endian format, so
1325                                  * no endian conversions here
1326                                  */
1327                                 memcpy(bus_addr, zr->stat_com,
1328                                        sizeof(bus_addr));
1329                                 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1330                                         zr->stat_com[j] =
1331                                             bus_addr[(i + j) &
1332                                                      BUZ_MASK_STAT_COM];
1333
1334                                 }
1335                                 zr->jpg_err_shift += i;
1336                                 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1337                         }
1338                         if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1339                                 zr->jpg_err_seq = zr->jpg_seq_num;      /* + 1; */
1340                 }
1341         }
1342
1343         /* Now the stat_comm buffer is ready for restart */
1344         do {
1345                 int status, mode;
1346
1347                 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1348                         decoder_command(zr, DECODER_GET_STATUS, &status);
1349                         mode = CODEC_DO_COMPRESSION;
1350                 } else {
1351                         status = 0;
1352                         mode = CODEC_DO_EXPANSION;
1353                 }
1354                 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1355                     (status & DECODER_STATUS_GOOD)) {
1356                         /********** RESTART code *************/
1357                         jpeg_codec_reset(zr);
1358                         zr->codec->set_mode(zr->codec, mode);
1359                         zr36057_set_jpg(zr, zr->codec_mode);
1360                         jpeg_start(zr);
1361
1362                         if (zr->num_errors <= 8)
1363                                 dprintk(2, KERN_INFO "%s: Restart\n",
1364                                         ZR_DEVNAME(zr));
1365
1366                         zr->JPEG_missed = 0;
1367                         zr->JPEG_error = 2;
1368                         /********** End RESTART code ***********/
1369                 }
1370         } while (0);
1371 }
1372
1373 irqreturn_t
1374 zoran_irq (int             irq,
1375            void           *dev_id)
1376 {
1377         u32 stat, astat;
1378         int count;
1379         struct zoran *zr;
1380         unsigned long flags;
1381
1382         zr = dev_id;
1383         count = 0;
1384
1385         if (zr->testing) {
1386                 /* Testing interrupts */
1387                 spin_lock_irqsave(&zr->spinlock, flags);
1388                 while ((stat = count_reset_interrupt(zr))) {
1389                         if (count++ > 100) {
1390                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1391                                 dprintk(1,
1392                                         KERN_ERR
1393                                         "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1394                                         ZR_DEVNAME(zr), stat);
1395                                 wake_up_interruptible(&zr->test_q);
1396                         }
1397                 }
1398                 zr->last_isr = stat;
1399                 spin_unlock_irqrestore(&zr->spinlock, flags);
1400                 return IRQ_HANDLED;
1401         }
1402
1403         spin_lock_irqsave(&zr->spinlock, flags);
1404         while (1) {
1405                 /* get/clear interrupt status bits */
1406                 stat = count_reset_interrupt(zr);
1407                 astat = stat & IRQ_MASK;
1408                 if (!astat) {
1409                         break;
1410                 }
1411                 dprintk(4,
1412                         KERN_DEBUG
1413                         "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1414                         astat, btread(ZR36057_ICR));
1415                 if (astat & zr->card.vsync_int) {       // SW
1416
1417                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1418                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1419                                 /* count missed interrupts */
1420                                 zr->JPEG_missed++;
1421                         }
1422                         //post_office_read(zr,1,0);
1423                         /* Interrupts may still happen when
1424                          * zr->v4l_memgrab_active is switched off.
1425                          * We simply ignore them */
1426
1427                         if (zr->v4l_memgrab_active) {
1428
1429                                 /* A lot more checks should be here ... */
1430                                 if ((btread(ZR36057_VSSFGR) &
1431                                      ZR36057_VSSFGR_SnapShot) == 0)
1432                                         dprintk(1,
1433                                                 KERN_WARNING
1434                                                 "%s: BuzIRQ with SnapShot off ???\n",
1435                                                 ZR_DEVNAME(zr));
1436
1437                                 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1438                                         /* There is a grab on a frame going on, check if it has finished */
1439
1440                                         if ((btread(ZR36057_VSSFGR) &
1441                                              ZR36057_VSSFGR_FrameGrab) ==
1442                                             0) {
1443                                                 /* it is finished, notify the user */
1444
1445                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1446                                                 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1447                                                 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1448                                                 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1449                                                 zr->v4l_pend_tail++;
1450                                         }
1451                                 }
1452
1453                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1454                                         wake_up_interruptible(&zr->v4l_capq);
1455
1456                                 /* Check if there is another grab queued */
1457
1458                                 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1459                                     zr->v4l_pend_tail != zr->v4l_pend_head) {
1460
1461                                         int frame = zr->v4l_pend[zr->v4l_pend_tail &
1462                                                          V4L_MASK_FRAME];
1463                                         u32 reg;
1464
1465                                         zr->v4l_grab_frame = frame;
1466
1467                                         /* Set zr36057 video front end and enable video */
1468
1469                                         /* Buffer address */
1470
1471                                         reg =
1472                                             zr->v4l_buffers.buffer[frame].
1473                                             fbuffer_bus;
1474                                         btwrite(reg, ZR36057_VDTR);
1475                                         if (zr->v4l_settings.height >
1476                                             BUZ_MAX_HEIGHT / 2)
1477                                                 reg +=
1478                                                     zr->v4l_settings.
1479                                                     bytesperline;
1480                                         btwrite(reg, ZR36057_VDBR);
1481
1482                                         /* video stride, status, and frame grab register */
1483                                         reg = 0;
1484                                         if (zr->v4l_settings.height >
1485                                             BUZ_MAX_HEIGHT / 2)
1486                                                 reg +=
1487                                                     zr->v4l_settings.
1488                                                     bytesperline;
1489                                         reg =
1490                                             (reg <<
1491                                              ZR36057_VSSFGR_DispStride);
1492                                         reg |= ZR36057_VSSFGR_VidOvf;
1493                                         reg |= ZR36057_VSSFGR_SnapShot;
1494                                         reg |= ZR36057_VSSFGR_FrameGrab;
1495                                         btwrite(reg, ZR36057_VSSFGR);
1496
1497                                         btor(ZR36057_VDCR_VidEn,
1498                                              ZR36057_VDCR);
1499                                 }
1500                         }
1501
1502                         /* even if we don't grab, we do want to increment
1503                          * the sequence counter to see lost frames */
1504                         zr->v4l_grab_seq++;
1505                 }
1506 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1507                 if (astat & ZR36057_ISR_CodRepIRQ) {
1508                         zr->intr_counter_CodRepIRQ++;
1509                         IDEBUG(printk
1510                                (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1511                                 ZR_DEVNAME(zr)));
1512                         btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1513                 }
1514 #endif                          /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1515
1516 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1517                 if (astat & ZR36057_ISR_JPEGRepIRQ) {
1518
1519                         if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1520                             zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1521                                 if (zr36067_debug > 1 &&
1522                                     (!zr->frame_num || zr->JPEG_error)) {
1523                                         printk(KERN_INFO
1524                                                "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1525                                                ZR_DEVNAME(zr), stat,
1526                                                zr->jpg_settings.odd_even,
1527                                                zr->jpg_settings.
1528                                                field_per_buff,
1529                                                zr->JPEG_missed);
1530                                         {
1531                                                 char sc[] = "0000";
1532                                                 char sv[5];
1533                                                 int i;
1534                                                 strcpy(sv, sc);
1535                                                 for (i = 0; i < 4; i++) {
1536                                                         if (le32_to_cpu(zr->stat_com[i]) & 1)
1537                                                                 sv[i] = '1';
1538                                                 }
1539                                                 sv[4] = 0;
1540                                                 printk(KERN_INFO
1541                                                        "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1542                                                        ZR_DEVNAME(zr), sv,
1543                                                        zr->jpg_que_tail,
1544                                                        zr->jpg_dma_tail,
1545                                                        zr->jpg_dma_head,
1546                                                        zr->jpg_que_head);
1547                                         }
1548                                 } else {
1549                                         if (zr->JPEG_missed > zr->JPEG_max_missed)      // Get statistics
1550                                                 zr->JPEG_max_missed =
1551                                                     zr->JPEG_missed;
1552                                         if (zr->JPEG_missed <
1553                                             zr->JPEG_min_missed)
1554                                                 zr->JPEG_min_missed =
1555                                                     zr->JPEG_missed;
1556                                 }
1557
1558                                 if (zr36067_debug > 2 && zr->frame_num < 6) {
1559                                         int i;
1560                                         printk("%s: seq=%ld stat_com:",
1561                                                ZR_DEVNAME(zr), zr->jpg_seq_num);
1562                                         for (i = 0; i < 4; i++) {
1563                                                 printk(" %08x",
1564                                                        le32_to_cpu(zr->stat_com[i]));
1565                                         }
1566                                         printk("\n");
1567                                 }
1568                                 zr->frame_num++;
1569                                 zr->JPEG_missed = 0;
1570                                 zr->JPEG_error = 0;
1571                                 zoran_reap_stat_com(zr);
1572                                 zoran_feed_stat_com(zr);
1573                                 wake_up_interruptible(&zr->jpg_capq);
1574                         } /*else {
1575                               dprintk(1,
1576                                         KERN_ERR
1577                                         "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1578                                         ZR_DEVNAME(zr));
1579                         }*/
1580                 }
1581 #endif                          /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1582
1583                 /* DATERR, too many fields missed, error processing */
1584                 if ((astat & zr->card.jpeg_int) ||
1585                     zr->JPEG_missed > 25 ||
1586                     zr->JPEG_error == 1 ||
1587                     ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1588                      (zr->frame_num & (zr->JPEG_missed >
1589                                        zr->jpg_settings.field_per_buff)))) {
1590                         error_handler(zr, astat, stat);
1591                 }
1592
1593                 count++;
1594                 if (count > 10) {
1595                         dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1596                                 ZR_DEVNAME(zr), count);
1597                         if (count > 20) {
1598                                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1599                                 dprintk(2,
1600                                         KERN_ERR
1601                                         "%s: IRQ lockup, cleared int mask\n",
1602                                         ZR_DEVNAME(zr));
1603                                 break;
1604                         }
1605                 }
1606                 zr->last_isr = stat;
1607         }
1608         spin_unlock_irqrestore(&zr->spinlock, flags);
1609
1610         return IRQ_HANDLED;
1611 }
1612
1613 void
1614 zoran_set_pci_master (struct zoran *zr,
1615                       int           set_master)
1616 {
1617         if (set_master) {
1618                 pci_set_master(zr->pci_dev);
1619         } else {
1620                 u16 command;
1621
1622                 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1623                 command &= ~PCI_COMMAND_MASTER;
1624                 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1625         }
1626 }
1627
1628 void
1629 zoran_init_hardware (struct zoran *zr)
1630 {
1631         int j, zero = 0;
1632
1633         /* Enable bus-mastering */
1634         zoran_set_pci_master(zr, 1);
1635
1636         /* Initialize the board */
1637         if (zr->card.init) {
1638                 zr->card.init(zr);
1639         }
1640
1641         j = zr->card.input[zr->input].muxsel;
1642
1643         decoder_command(zr, 0, NULL);
1644         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1645         decoder_command(zr, DECODER_SET_INPUT, &j);
1646
1647         encoder_command(zr, 0, NULL);
1648         encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1649         encoder_command(zr, ENCODER_SET_INPUT, &zero);
1650
1651         /* toggle JPEG codec sleep to sync PLL */
1652         jpeg_codec_sleep(zr, 1);
1653         jpeg_codec_sleep(zr, 0);
1654
1655         /* set individual interrupt enables (without GIRQ1)
1656          * but don't global enable until zoran_open() */
1657
1658         //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR);  // SW
1659         // It looks like using only JPEGRepIRQEn is not always reliable,
1660         // may be when JPEG codec crashes it won't generate IRQ? So,
1661          /*CP*/                 //        btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM    WHY ? LP
1662             zr36057_init_vfe(zr);
1663
1664         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1665
1666         btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1667 }
1668
1669 void
1670 zr36057_restart (struct zoran *zr)
1671 {
1672         btwrite(0, ZR36057_SPGPPCR);
1673         mdelay(1);
1674         btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1675         mdelay(1);
1676
1677         /* assert P_Reset */
1678         btwrite(0, ZR36057_JPC);
1679         /* set up GPIO direction - all output */
1680         btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1681
1682         /* set up GPIO pins and guest bus timing */
1683         btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1684 }
1685
1686 /*
1687  * initialize video front end
1688  */
1689
1690 static void
1691 zr36057_init_vfe (struct zoran *zr)
1692 {
1693         u32 reg;
1694
1695         reg = btread(ZR36057_VFESPFR);
1696         reg |= ZR36057_VFESPFR_LittleEndian;
1697         reg &= ~ZR36057_VFESPFR_VCLKPol;
1698         reg |= ZR36057_VFESPFR_ExtFl;
1699         reg |= ZR36057_VFESPFR_TopField;
1700         btwrite(reg, ZR36057_VFESPFR);
1701         reg = btread(ZR36057_VDCR);
1702         if (pci_pci_problems & PCIPCI_TRITON)
1703                 // || zr->revision < 1) // Revision 1 has also Triton support
1704                 reg &= ~ZR36057_VDCR_Triton;
1705         else
1706                 reg |= ZR36057_VDCR_Triton;
1707         btwrite(reg, ZR36057_VDCR);
1708 }
1709
1710 /*
1711  * Interface to decoder and encoder chips using i2c bus
1712  */
1713
1714 int
1715 decoder_command (struct zoran *zr,
1716                  int           cmd,
1717                  void         *data)
1718 {
1719         if (zr->decoder == NULL)
1720                 return -EIO;
1721
1722         if (zr->card.type == LML33 &&
1723             (cmd == DECODER_SET_NORM || cmd == DECODER_SET_INPUT)) {
1724                 int res;
1725
1726                 // Bt819 needs to reset its FIFO buffer using #FRST pin and
1727                 // LML33 card uses GPIO(7) for that.
1728                 GPIO(zr, 7, 0);
1729                 res = zr->decoder->driver->command(zr->decoder, cmd, data);
1730                 // Pull #FRST high.
1731                 GPIO(zr, 7, 1);
1732                 return res;
1733         } else
1734                 return zr->decoder->driver->command(zr->decoder, cmd,
1735                                                     data);
1736 }
1737
1738 int
1739 encoder_command (struct zoran *zr,
1740                  int           cmd,
1741                  void         *data)
1742 {
1743         if (zr->encoder == NULL)
1744                 return -1;
1745
1746         return zr->encoder->driver->command(zr->encoder, cmd, data);
1747 }