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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / media / video / zoran_device.c
blob4e15afdec4c9d4b60eb8ddc5616899dab2554a91
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/config.h>
31 #include <linux/types.h>
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/vmalloc.h>
35 #include <linux/byteorder/generic.h>
36
37 #include <linux/interrupt.h>
38 #include <linux/proc_fs.h>
39 #include <linux/i2c.h>
40 #include <linux/i2c-algo-bit.h>
41 #include <linux/videodev.h>
42 #include <linux/spinlock.h>
43 #include <linux/sem.h>
44
45 #include <linux/pci.h>
46 #include <linux/video_decoder.h>
47 #include <linux/video_encoder.h>
48 #include <linux/delay.h>
49 #include <linux/wait.h>
50
51 #include <asm/io.h>
52
53 #include "videocodec.h"
54 #include "zoran.h"
55 #include "zoran_device.h"
56
57 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
58 ZR36057_ISR_GIRQ1 | \
59 ZR36057_ISR_JPEGRepIRQ )
60
61 extern const struct zoran_format zoran_formats[];
62
63 extern int *zr_debug;
64
65 #define dprintk(num, format, args...) \
66 do { \
67 if (*zr_debug >= num) \
68 printk(format, ##args); \
69 } while (0)
70
71 static int lml33dpath = 0; /* 1 will use digital path in capture
72 * mode instead of analog. It can be
73 * used for picture adjustments using
74 * tool like xawtv while watching image
75 * on TV monitor connected to the output.
76 * However, due to absence of 75 Ohm
77 * load on Bt819 input, there will be
78 * some image imperfections */
79
80 module_param(lml33dpath, bool, 0);
81 MODULE_PARM_DESC(lml33dpath,
82 "Use digital path capture mode (on LML33 cards)");
83
84 static void
85 zr36057_init_vfe (struct zoran *zr);
86
87 /*
88 * General Purpose I/O and Guest bus access
89 */
90
91 /*
92 * This is a bit tricky. When a board lacks a GPIO function, the corresponding
93 * GPIO bit number in the card_info structure is set to 0.
94 */
95
96 void
97 GPIO (struct zoran *zr,
98 int bit,
99 unsigned int value)
100 {
101 u32 reg;
102 u32 mask;
103
104 /* Make sure the bit number is legal
105 * A bit number of -1 (lacking) gives a mask of 0,
106 * making it harmless */
107 mask = (1 << (24 + bit)) & 0xff000000;
108 reg = btread(ZR36057_GPPGCR1) & ~mask;
109 if (value) {
110 reg |= mask;
111 }
112 btwrite(reg, ZR36057_GPPGCR1);
113 udelay(1);
114 }
115
116 /*
117 * Wait til post office is no longer busy
118 */
119
120 int
121 post_office_wait (struct zoran *zr)
122 {
123 u32 por;
124
125 // while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
126 while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
127 /* wait for something to happen */
128 }
129 if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
130 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
131 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
132 por);
133 return -1;
134 }
135
136 return 0;
137 }
138
139 int
140 post_office_write (struct zoran *zr,
141 unsigned int guest,
142 unsigned int reg,
143 unsigned int value)
144 {
145 u32 por;
146
147 por =
148 ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
149 ((reg & 7) << 16) | (value & 0xFF);
150 btwrite(por, ZR36057_POR);
151
152 return post_office_wait(zr);
153 }
154
155 int
156 post_office_read (struct zoran *zr,
157 unsigned int guest,
158 unsigned int reg)
159 {
160 u32 por;
161
162 por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
163 btwrite(por, ZR36057_POR);
164 if (post_office_wait(zr) < 0) {
165 return -1;
166 }
167
168 return btread(ZR36057_POR) & 0xFF;
169 }
170
171 /*
172 * detect guests
173 */
174
175 static void
176 dump_guests (struct zoran *zr)
177 {
178 if (*zr_debug > 2) {
179 int i, guest[8];
180
181 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
182 guest[i] = post_office_read(zr, i, 0);
183 }
184
185 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
186
187 for (i = 1; i < 8; i++) {
188 printk(" 0x%02x", guest[i]);
189 }
190 printk("\n");
191 }
192 }
193
194 static inline unsigned long
195 get_time (void)
196 {
197 struct timeval tv;
198
199 do_gettimeofday(&tv);
200 return (1000000 * tv.tv_sec + tv.tv_usec);
201 }
202
203 void
204 detect_guest_activity (struct zoran *zr)
205 {
206 int timeout, i, j, res, guest[8], guest0[8], change[8][3];
207 unsigned long t0, t1;
208
209 dump_guests(zr);
210 printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
211 ZR_DEVNAME(zr));
212 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
213 guest0[i] = guest[i] = post_office_read(zr, i, 0);
214 }
215
216 timeout = 0;
217 j = 0;
218 t0 = get_time();
219 while (timeout < 10000) {
220 udelay(10);
221 timeout++;
222 for (i = 1; (i < 8) && (j < 8); i++) {
223 res = post_office_read(zr, i, 0);
224 if (res != guest[i]) {
225 t1 = get_time();
226 change[j][0] = (t1 - t0);
227 t0 = t1;
228 change[j][1] = i;
229 change[j][2] = res;
230 j++;
231 guest[i] = res;
232 }
233 }
234 if (j >= 8)
235 break;
236 }
237 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
238
239 for (i = 1; i < 8; i++) {
240 printk(" 0x%02x", guest0[i]);
241 }
242 printk("\n");
243 if (j == 0) {
244 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
245 return;
246 }
247 for (i = 0; i < j; i++) {
248 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
249 change[i][0], change[i][1], change[i][2]);
250 }
251 }
252
253 /*
254 * JPEG Codec access
255 */
256
257 void
258 jpeg_codec_sleep (struct zoran *zr,
259 int sleep)
260 {
261 GPIO(zr, zr->card.gpio[GPIO_JPEG_SLEEP], !sleep);
262 if (!sleep) {
263 dprintk(3,
264 KERN_DEBUG
265 "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
266 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
267 udelay(500);
268 } else {
269 dprintk(3,
270 KERN_DEBUG
271 "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
272 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
273 udelay(2);
274 }
275 }
276
277 int
278 jpeg_codec_reset (struct zoran *zr)
279 {
280 /* Take the codec out of sleep */
281 jpeg_codec_sleep(zr, 0);
282
283 if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
284 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
285 0);
286 udelay(2);
287 } else {
288 GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 0);
289 udelay(2);
290 GPIO(zr, zr->card.gpio[GPIO_JPEG_RESET], 1);
291 udelay(2);
292 }
293
294 return 0;
295 }
296
297 /*
298 * Set the registers for the size we have specified. Don't bother
299 * trying to understand this without the ZR36057 manual in front of
300 * you [AC].
301 *
302 * PS: The manual is free for download in .pdf format from
303 * www.zoran.com - nicely done those folks.
304 */
305
306 static void
307 zr36057_adjust_vfe (struct zoran *zr,
308 enum zoran_codec_mode mode)
309 {
310 u32 reg;
311
312 switch (mode) {
313 case BUZ_MODE_MOTION_DECOMPRESS:
314 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
315 reg = btread(ZR36057_VFEHCR);
316 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
317 reg += ((1 << 10) | 1);
318 }
319 btwrite(reg, ZR36057_VFEHCR);
320 break;
321 case BUZ_MODE_MOTION_COMPRESS:
322 case BUZ_MODE_IDLE:
323 default:
324 if (zr->norm == VIDEO_MODE_NTSC ||
325 (zr->card.type == LML33R10 &&
326 zr->norm == VIDEO_MODE_PAL))
327 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
328 else
329 btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
330 reg = btread(ZR36057_VFEHCR);
331 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
332 reg -= ((1 << 10) | 1);
333 }
334 btwrite(reg, ZR36057_VFEHCR);
335 break;
336 }
337 }
338
339 /*
340 * set geometry
341 */
342
343 static void
344 zr36057_set_vfe (struct zoran *zr,
345 int video_width,
346 int video_height,
347 const struct zoran_format *format)
348 {
349 struct tvnorm *tvn;
350 unsigned HStart, HEnd, VStart, VEnd;
351 unsigned DispMode;
352 unsigned VidWinWid, VidWinHt;
353 unsigned hcrop1, hcrop2, vcrop1, vcrop2;
354 unsigned Wa, We, Ha, He;
355 unsigned X, Y, HorDcm, VerDcm;
356 u32 reg;
357 unsigned mask_line_size;
358
359 tvn = zr->timing;
360
361 Wa = tvn->Wa;
362 Ha = tvn->Ha;
363
364 dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
365 ZR_DEVNAME(zr), video_width, video_height);
366
367 if (zr->norm != VIDEO_MODE_PAL &&
368 zr->norm != VIDEO_MODE_NTSC &&
369 zr->norm != VIDEO_MODE_SECAM) {
370 dprintk(1,
371 KERN_ERR "%s: set_vfe() - norm = %d not valid\n",
372 ZR_DEVNAME(zr), zr->norm);
373 return;
374 }
375 if (video_width < BUZ_MIN_WIDTH ||
376 video_height < BUZ_MIN_HEIGHT ||
377 video_width > Wa || video_height > Ha) {
378 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
379 ZR_DEVNAME(zr), video_width, video_height);
380 return;
381 }
382
383 /**** zr36057 ****/
384
385 /* horizontal */
386 VidWinWid = video_width;
387 X = (VidWinWid * 64 + tvn->Wa - 1) / tvn->Wa;
388 We = (VidWinWid * 64) / X;
389 HorDcm = 64 - X;
390 hcrop1 = 2 * ((tvn->Wa - We) / 4);
391 hcrop2 = tvn->Wa - We - hcrop1;
392 HStart = tvn->HStart ? tvn->HStart : 1;
393 /* (Ronald) Original comment:
394 * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
395 * this is false. It inverses chroma values on the LML33R10 (so Cr
396 * suddenly is shown as Cb and reverse, really cool effect if you
397 * want to see blue faces, not useful otherwise). So don't use |1.
398 * However, the DC10 has '0' as HStart, but does need |1, so we
399 * use a dirty check...
400 */
401 HEnd = HStart + tvn->Wa - 1;
402 HStart += hcrop1;
403 HEnd -= hcrop2;
404 reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
405 | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
406 if (zr->card.vfe_pol.hsync_pol)
407 reg |= ZR36057_VFEHCR_HSPol;
408 btwrite(reg, ZR36057_VFEHCR);
409
410 /* Vertical */
411 DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
412 VidWinHt = DispMode ? video_height : video_height / 2;
413 Y = (VidWinHt * 64 * 2 + tvn->Ha - 1) / tvn->Ha;
414 He = (VidWinHt * 64) / Y;
415 VerDcm = 64 - Y;
416 vcrop1 = (tvn->Ha / 2 - He) / 2;
417 vcrop2 = tvn->Ha / 2 - He - vcrop1;
418 VStart = tvn->VStart;
419 VEnd = VStart + tvn->Ha / 2; // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
420 VStart += vcrop1;
421 VEnd -= vcrop2;
422 reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
423 | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
424 if (zr->card.vfe_pol.vsync_pol)
425 reg |= ZR36057_VFEVCR_VSPol;
426 btwrite(reg, ZR36057_VFEVCR);
427
428 /* scaler and pixel format */
429 reg = 0;
430 reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
431 reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
432 reg |= (DispMode << ZR36057_VFESPFR_DispMode);
433 if (format->palette != VIDEO_PALETTE_YUV422)
434 reg |= ZR36057_VFESPFR_LittleEndian;
435 /* RJ: I don't know, why the following has to be the opposite
436 * of the corresponding ZR36060 setting, but only this way
437 * we get the correct colors when uncompressing to the screen */
438 //reg |= ZR36057_VFESPFR_VCLKPol; /**/
439 /* RJ: Don't know if that is needed for NTSC also */
440 if (zr->norm != VIDEO_MODE_NTSC)
441 reg |= ZR36057_VFESPFR_ExtFl; // NEEDED!!!!!!! Wolfgang
442 reg |= ZR36057_VFESPFR_TopField;
443 switch (format->palette) {
444
445 case VIDEO_PALETTE_YUV422:
446 reg |= ZR36057_VFESPFR_YUV422;
447 break;
448
449 case VIDEO_PALETTE_RGB555:
450 reg |= ZR36057_VFESPFR_RGB555 | ZR36057_VFESPFR_ErrDif;
451 break;
452
453 case VIDEO_PALETTE_RGB565:
454 reg |= ZR36057_VFESPFR_RGB565 | ZR36057_VFESPFR_ErrDif;
455 break;
456
457 case VIDEO_PALETTE_RGB24:
458 reg |= ZR36057_VFESPFR_RGB888 | ZR36057_VFESPFR_Pack24;
459 break;
460
461 case VIDEO_PALETTE_RGB32:
462 reg |= ZR36057_VFESPFR_RGB888;
463 break;
464
465 default:
466 dprintk(1,
467 KERN_INFO "%s: set_vfe() - unknown color_fmt=%x\n",
468 ZR_DEVNAME(zr), format->palette);
469 return;
470
471 }
472 if (HorDcm >= 48) {
473 reg |= 3 << ZR36057_VFESPFR_HFilter; /* 5 tap filter */
474 } else if (HorDcm >= 32) {
475 reg |= 2 << ZR36057_VFESPFR_HFilter; /* 4 tap filter */
476 } else if (HorDcm >= 16) {
477 reg |= 1 << ZR36057_VFESPFR_HFilter; /* 3 tap filter */
478 }
479 btwrite(reg, ZR36057_VFESPFR);
480
481 /* display configuration */
482 reg = (16 << ZR36057_VDCR_MinPix)
483 | (VidWinHt << ZR36057_VDCR_VidWinHt)
484 | (VidWinWid << ZR36057_VDCR_VidWinWid);
485 if (pci_pci_problems & PCIPCI_TRITON)
486 // || zr->revision < 1) // Revision 1 has also Triton support
487 reg &= ~ZR36057_VDCR_Triton;
488 else
489 reg |= ZR36057_VDCR_Triton;
490 btwrite(reg, ZR36057_VDCR);
491
492 /* (Ronald) don't write this if overlay_mask = NULL */
493 if (zr->overlay_mask) {
494 /* Write overlay clipping mask data, but don't enable overlay clipping */
495 /* RJ: since this makes only sense on the screen, we use
496 * zr->overlay_settings.width instead of video_width */
497
498 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
499 reg = virt_to_bus(zr->overlay_mask);
500 btwrite(reg, ZR36057_MMTR);
501 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
502 btwrite(reg, ZR36057_MMBR);
503 reg =
504 mask_line_size - (zr->overlay_settings.width +
505 31) / 32;
506 if (DispMode == 0)
507 reg += mask_line_size;
508 reg <<= ZR36057_OCR_MaskStride;
509 btwrite(reg, ZR36057_OCR);
510 }
511
512 zr36057_adjust_vfe(zr, zr->codec_mode);
513 }
514
515 /*
516 * Switch overlay on or off
517 */
518
519 void
520 zr36057_overlay (struct zoran *zr,
521 int on)
522 {
523 u32 reg;
524
525 if (on) {
526 /* do the necessary settings ... */
527 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR); /* switch it off first */
528
529 zr36057_set_vfe(zr,
530 zr->overlay_settings.width,
531 zr->overlay_settings.height,
532 zr->overlay_settings.format);
533
534 /* Start and length of each line MUST be 4-byte aligned.
535 * This should be allready checked before the call to this routine.
536 * All error messages are internal driver checking only! */
537
538 /* video display top and bottom registers */
539 reg = (u32) zr->buffer.base +
540 zr->overlay_settings.x *
541 ((zr->overlay_settings.format->depth + 7) / 8) +
542 zr->overlay_settings.y *
543 zr->buffer.bytesperline;
544 btwrite(reg, ZR36057_VDTR);
545 if (reg & 3)
546 dprintk(1,
547 KERN_ERR
548 "%s: zr36057_overlay() - video_address not aligned\n",
549 ZR_DEVNAME(zr));
550 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
551 reg += zr->buffer.bytesperline;
552 btwrite(reg, ZR36057_VDBR);
553
554 /* video stride, status, and frame grab register */
555 reg = zr->buffer.bytesperline -
556 zr->overlay_settings.width *
557 ((zr->overlay_settings.format->depth + 7) / 8);
558 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
559 reg += zr->buffer.bytesperline;
560 if (reg & 3)
561 dprintk(1,
562 KERN_ERR
563 "%s: zr36057_overlay() - video_stride not aligned\n",
564 ZR_DEVNAME(zr));
565 reg = (reg << ZR36057_VSSFGR_DispStride);
566 reg |= ZR36057_VSSFGR_VidOvf; /* clear overflow status */
567 btwrite(reg, ZR36057_VSSFGR);
568
569 /* Set overlay clipping */
570 if (zr->overlay_settings.clipcount > 0)
571 btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
572
573 /* ... and switch it on */
574 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
575 } else {
576 /* Switch it off */
577 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
578 }
579 }
580
581 /*
582 * The overlay mask has one bit for each pixel on a scan line,
583 * and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
584 */
585
586 void
587 write_overlay_mask (struct file *file,
588 struct video_clip *vp,
589 int count)
590 {
591 struct zoran_fh *fh = file->private_data;
592 struct zoran *zr = fh->zr;
593 unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
594 u32 *mask;
595 int x, y, width, height;
596 unsigned i, j, k;
597 u32 reg;
598
599 /* fill mask with one bits */
600 memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
601 reg = 0;
602
603 for (i = 0; i < count; ++i) {
604 /* pick up local copy of clip */
605 x = vp[i].x;
606 y = vp[i].y;
607 width = vp[i].width;
608 height = vp[i].height;
609
610 /* trim clips that extend beyond the window */
611 if (x < 0) {
612 width += x;
613 x = 0;
614 }
615 if (y < 0) {
616 height += y;
617 y = 0;
618 }
619 if (x + width > fh->overlay_settings.width) {
620 width = fh->overlay_settings.width - x;
621 }
622 if (y + height > fh->overlay_settings.height) {
623 height = fh->overlay_settings.height - y;
624 }
625
626 /* ignore degenerate clips */
627 if (height <= 0) {
628 continue;
629 }
630 if (width <= 0) {
631 continue;
632 }
633
634 /* apply clip for each scan line */
635 for (j = 0; j < height; ++j) {
636 /* reset bit for each pixel */
637 /* this can be optimized later if need be */
638 mask = fh->overlay_mask + (y + j) * mask_line_size;
639 for (k = 0; k < width; ++k) {
640 mask[(x + k) / 32] &=
641 ~((u32) 1 << (x + k) % 32);
642 }
643 }
644 }
645 }
646
647 /* Enable/Disable uncompressed memory grabbing of the 36057 */
648
649 void
650 zr36057_set_memgrab (struct zoran *zr,
651 int mode)
652 {
653 if (mode) {
654 if (btread(ZR36057_VSSFGR) &
655 (ZR36057_VSSFGR_SnapShot | ZR36057_VSSFGR_FrameGrab))
656 dprintk(1,
657 KERN_WARNING
658 "%s: zr36057_set_memgrab(1) with SnapShot or FrameGrab on!?\n",
659 ZR_DEVNAME(zr));
660
661 /* switch on VSync interrupts */
662 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
663 btor(zr->card.vsync_int, ZR36057_ICR); // SW
664
665 /* enable SnapShot */
666 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
667
668 /* Set zr36057 video front end and enable video */
669 zr36057_set_vfe(zr, zr->v4l_settings.width,
670 zr->v4l_settings.height,
671 zr->v4l_settings.format);
672
673 zr->v4l_memgrab_active = 1;
674 } else {
675 zr->v4l_memgrab_active = 0;
676
677 /* switch off VSync interrupts */
678 btand(~zr->card.vsync_int, ZR36057_ICR); // SW
679
680 /* reenable grabbing to screen if it was running */
681 if (zr->v4l_overlay_active) {
682 zr36057_overlay(zr, 1);
683 } else {
684 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
685 btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
686 }
687 }
688 }
689
690 int
691 wait_grab_pending (struct zoran *zr)
692 {
693 unsigned long flags;
694
695 /* wait until all pending grabs are finished */
696
697 if (!zr->v4l_memgrab_active)
698 return 0;
699
700 wait_event_interruptible(zr->v4l_capq,
701 (zr->v4l_pend_tail == zr->v4l_pend_head));
702 if (signal_pending(current))
703 return -ERESTARTSYS;
704
705 spin_lock_irqsave(&zr->spinlock, flags);
706 zr36057_set_memgrab(zr, 0);
707 spin_unlock_irqrestore(&zr->spinlock, flags);
708
709 return 0;
710 }
711
712 /*****************************************************************************
713 * *
714 * Set up the Buz-specific MJPEG part *
715 * *
716 *****************************************************************************/
717
718 static inline void
719 set_frame (struct zoran *zr,
720 int val)
721 {
722 GPIO(zr, zr->card.gpio[GPIO_JPEG_FRAME], val);
723 }
724
725 static void
726 set_videobus_dir (struct zoran *zr,
727 int val)
728 {
729 switch (zr->card.type) {
730 case LML33:
731 case LML33R10:
732 if (lml33dpath == 0)
733 GPIO(zr, 5, val);
734 else
735 GPIO(zr, 5, 1);
736 break;
737 default:
738 GPIO(zr, zr->card.gpio[GPIO_VID_DIR],
739 zr->card.gpio_pol[GPIO_VID_DIR] ? !val : val);
740 break;
741 }
742 }
743
744 static void
745 init_jpeg_queue (struct zoran *zr)
746 {
747 int i;
748
749 /* re-initialize DMA ring stuff */
750 zr->jpg_que_head = 0;
751 zr->jpg_dma_head = 0;
752 zr->jpg_dma_tail = 0;
753 zr->jpg_que_tail = 0;
754 zr->jpg_seq_num = 0;
755 zr->JPEG_error = 0;
756 zr->num_errors = 0;
757 zr->jpg_err_seq = 0;
758 zr->jpg_err_shift = 0;
759 zr->jpg_queued_num = 0;
760 for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
761 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER; /* nothing going on */
762 }
763 for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
764 zr->stat_com[i] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
765 }
766 }
767
768 static void
769 zr36057_set_jpg (struct zoran *zr,
770 enum zoran_codec_mode mode)
771 {
772 struct tvnorm *tvn;
773 u32 reg;
774
775 tvn = zr->timing;
776
777 /* assert P_Reset, disable code transfer, deassert Active */
778 btwrite(0, ZR36057_JPC);
779
780 /* MJPEG compression mode */
781 switch (mode) {
782
783 case BUZ_MODE_MOTION_COMPRESS:
784 default:
785 reg = ZR36057_JMC_MJPGCmpMode;
786 break;
787
788 case BUZ_MODE_MOTION_DECOMPRESS:
789 reg = ZR36057_JMC_MJPGExpMode;
790 reg |= ZR36057_JMC_SyncMstr;
791 /* RJ: The following is experimental - improves the output to screen */
792 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
793 break;
794
795 case BUZ_MODE_STILL_COMPRESS:
796 reg = ZR36057_JMC_JPGCmpMode;
797 break;
798
799 case BUZ_MODE_STILL_DECOMPRESS:
800 reg = ZR36057_JMC_JPGExpMode;
801 break;
802
803 }
804 reg |= ZR36057_JMC_JPG;
805 if (zr->jpg_settings.field_per_buff == 1)
806 reg |= ZR36057_JMC_Fld_per_buff;
807 btwrite(reg, ZR36057_JMC);
808
809 /* vertical */
810 btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
811 reg = (6 << ZR36057_VSP_VsyncSize) |
812 (tvn->Ht << ZR36057_VSP_FrmTot);
813 btwrite(reg, ZR36057_VSP);
814 reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
815 (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
816 btwrite(reg, ZR36057_FVAP);
817
818 /* horizontal */
819 if (zr->card.vfe_pol.hsync_pol)
820 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
821 else
822 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
823 reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
824 (tvn->Wt << ZR36057_HSP_LineTot);
825 btwrite(reg, ZR36057_HSP);
826 reg = ((zr->jpg_settings.img_x +
827 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
828 (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
829 btwrite(reg, ZR36057_FHAP);
830
831 /* field process parameters */
832 if (zr->jpg_settings.odd_even)
833 reg = ZR36057_FPP_Odd_Even;
834 else
835 reg = 0;
836
837 btwrite(reg, ZR36057_FPP);
838
839 /* Set proper VCLK Polarity, else colors will be wrong during playback */
840 //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
841
842 /* code base address */
843 reg = virt_to_bus(zr->stat_com);
844 btwrite(reg, ZR36057_JCBA);
845
846 /* FIFO threshold (FIFO is 160. double words) */
847 /* NOTE: decimal values here */
848 switch (mode) {
849
850 case BUZ_MODE_STILL_COMPRESS:
851 case BUZ_MODE_MOTION_COMPRESS:
852 if (zr->card.type != BUZ)
853 reg = 140;
854 else
855 reg = 60;
856 break;
857
858 case BUZ_MODE_STILL_DECOMPRESS:
859 case BUZ_MODE_MOTION_DECOMPRESS:
860 reg = 20;
861 break;
862
863 default:
864 reg = 80;
865 break;
866
867 }
868 btwrite(reg, ZR36057_JCFT);
869 zr36057_adjust_vfe(zr, mode);
870
871 }
872
873 void
874 print_interrupts (struct zoran *zr)
875 {
876 int res, noerr = 0;
877
878 printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
879 if ((res = zr->field_counter) < -1 || res > 1) {
880 printk(" FD:%d", res);
881 }
882 if ((res = zr->intr_counter_GIRQ1) != 0) {
883 printk(" GIRQ1:%d", res);
884 noerr++;
885 }
886 if ((res = zr->intr_counter_GIRQ0) != 0) {
887 printk(" GIRQ0:%d", res);
888 noerr++;
889 }
890 if ((res = zr->intr_counter_CodRepIRQ) != 0) {
891 printk(" CodRepIRQ:%d", res);
892 noerr++;
893 }
894 if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
895 printk(" JPEGRepIRQ:%d", res);
896 noerr++;
897 }
898 if (zr->JPEG_max_missed) {
899 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
900 zr->JPEG_min_missed);
901 }
902 if (zr->END_event_missed) {
903 printk(" ENDs missed: %d", zr->END_event_missed);
904 }
905 //if (zr->jpg_queued_num) {
906 printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
907 zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
908 //}
909 if (!noerr) {
910 printk(": no interrupts detected.");
911 }
912 printk("\n");
913 }
914
915 void
916 clear_interrupt_counters (struct zoran *zr)
917 {
918 zr->intr_counter_GIRQ1 = 0;
919 zr->intr_counter_GIRQ0 = 0;
920 zr->intr_counter_CodRepIRQ = 0;
921 zr->intr_counter_JPEGRepIRQ = 0;
922 zr->field_counter = 0;
923 zr->IRQ1_in = 0;
924 zr->IRQ1_out = 0;
925 zr->JPEG_in = 0;
926 zr->JPEG_out = 0;
927 zr->JPEG_0 = 0;
928 zr->JPEG_1 = 0;
929 zr->END_event_missed = 0;
930 zr->JPEG_missed = 0;
931 zr->JPEG_max_missed = 0;
932 zr->JPEG_min_missed = 0x7fffffff;
933 }
934
935 static u32
936 count_reset_interrupt (struct zoran *zr)
937 {
938 u32 isr;
939
940 if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
941 if (isr & ZR36057_ISR_GIRQ1) {
942 btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
943 zr->intr_counter_GIRQ1++;
944 }
945 if (isr & ZR36057_ISR_GIRQ0) {
946 btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
947 zr->intr_counter_GIRQ0++;
948 }
949 if (isr & ZR36057_ISR_CodRepIRQ) {
950 btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
951 zr->intr_counter_CodRepIRQ++;
952 }
953 if (isr & ZR36057_ISR_JPEGRepIRQ) {
954 btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
955 zr->intr_counter_JPEGRepIRQ++;
956 }
957 }
958 return isr;
959 }
960
961 /* hack */
962 extern void zr36016_write (struct videocodec *codec,
963 u16 reg,
964 u32 val);
965
966 void
967 jpeg_start (struct zoran *zr)
968 {
969 int reg;
970
971 zr->frame_num = 0;
972
973 /* deassert P_reset, disable code transfer, deassert Active */
974 btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
975 /* stop flushing the internal code buffer */
976 btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
977 /* enable code transfer */
978 btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
979
980 /* clear IRQs */
981 btwrite(IRQ_MASK, ZR36057_ISR);
982 /* enable the JPEG IRQs */
983 btwrite(zr->card.jpeg_int |
984 ZR36057_ICR_JPEGRepIRQ |
985 ZR36057_ICR_IntPinEn,
986 ZR36057_ICR);
987
988 set_frame(zr, 0); // \FRAME
989
990 /* set the JPEG codec guest ID */
991 reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
992 (0 << ZR36057_JCGI_JPEGuestReg);
993 btwrite(reg, ZR36057_JCGI);
994
995 if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
996 zr->card.video_codec == CODEC_TYPE_ZR36050) {
997 /* Enable processing on the ZR36016 */
998 if (zr->vfe)
999 zr36016_write(zr->vfe, 0, 1);
1000
1001 /* load the address of the GO register in the ZR36050 latch */
1002 post_office_write(zr, 0, 0, 0);
1003 }
1004
1005 /* assert Active */
1006 btor(ZR36057_JPC_Active, ZR36057_JPC);
1007
1008 /* enable the Go generation */
1009 btor(ZR36057_JMC_Go_en, ZR36057_JMC);
1010 udelay(30);
1011
1012 set_frame(zr, 1); // /FRAME
1013
1014 dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
1015 }
1016
1017 void
1018 zr36057_enable_jpg (struct zoran *zr,
1019 enum zoran_codec_mode mode)
1020 {
1021 static int zero = 0;
1022 static int one = 1;
1023 struct vfe_settings cap;
1024 int field_size =
1025 zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
1026
1027 zr->codec_mode = mode;
1028
1029 cap.x = zr->jpg_settings.img_x;
1030 cap.y = zr->jpg_settings.img_y;
1031 cap.width = zr->jpg_settings.img_width;
1032 cap.height = zr->jpg_settings.img_height;
1033 cap.decimation =
1034 zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
1035 cap.quality = zr->jpg_settings.jpg_comp.quality;
1036
1037 switch (mode) {
1038
1039 case BUZ_MODE_MOTION_COMPRESS: {
1040 struct jpeg_app_marker app;
1041 struct jpeg_com_marker com;
1042
1043 /* In motion compress mode, the decoder output must be enabled, and
1044 * the video bus direction set to input.
1045 */
1046 set_videobus_dir(zr, 0);
1047 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1048 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1049
1050 /* Take the JPEG codec and the VFE out of sleep */
1051 jpeg_codec_sleep(zr, 0);
1052
1053 /* set JPEG app/com marker */
1054 app.appn = zr->jpg_settings.jpg_comp.APPn;
1055 app.len = zr->jpg_settings.jpg_comp.APP_len;
1056 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1057 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1058 sizeof(struct jpeg_app_marker), &app);
1059
1060 com.len = zr->jpg_settings.jpg_comp.COM_len;
1061 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1062 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1063 sizeof(struct jpeg_com_marker), &com);
1064
1065 /* Setup the JPEG codec */
1066 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1067 sizeof(int), &field_size);
1068 zr->codec->set_video(zr->codec, zr->timing, &cap,
1069 &zr->card.vfe_pol);
1070 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1071
1072 /* Setup the VFE */
1073 if (zr->vfe) {
1074 zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1075 sizeof(int), &field_size);
1076 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1077 &zr->card.vfe_pol);
1078 zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1079 }
1080
1081 init_jpeg_queue(zr);
1082 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1083
1084 clear_interrupt_counters(zr);
1085 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1086 ZR_DEVNAME(zr));
1087 break;
1088 }
1089
1090 case BUZ_MODE_MOTION_DECOMPRESS:
1091 /* In motion decompression mode, the decoder output must be disabled, and
1092 * the video bus direction set to output.
1093 */
1094 decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1095 set_videobus_dir(zr, 1);
1096 encoder_command(zr, ENCODER_SET_INPUT, &one);
1097
1098 /* Take the JPEG codec and the VFE out of sleep */
1099 jpeg_codec_sleep(zr, 0);
1100 /* Setup the VFE */
1101 if (zr->vfe) {
1102 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1103 &zr->card.vfe_pol);
1104 zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1105 }
1106 /* Setup the JPEG codec */
1107 zr->codec->set_video(zr->codec, zr->timing, &cap,
1108 &zr->card.vfe_pol);
1109 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1110
1111 init_jpeg_queue(zr);
1112 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1113
1114 clear_interrupt_counters(zr);
1115 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1116 ZR_DEVNAME(zr));
1117 break;
1118
1119 case BUZ_MODE_IDLE:
1120 default:
1121 /* shut down processing */
1122 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1123 ZR36057_ICR);
1124 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1125 ZR36057_ISR);
1126 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1127
1128 msleep(50);
1129
1130 set_videobus_dir(zr, 0);
1131 set_frame(zr, 1); // /FRAME
1132 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR); // /CFlush
1133 btwrite(0, ZR36057_JPC); // \P_Reset,\CodTrnsEn,\Active
1134 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1135 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1136 jpeg_codec_reset(zr);
1137 jpeg_codec_sleep(zr, 1);
1138 zr36057_adjust_vfe(zr, mode);
1139
1140 decoder_command(zr, DECODER_ENABLE_OUTPUT, &one);
1141 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1142
1143 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1144 break;
1145
1146 }
1147 }
1148
1149 /* when this is called the spinlock must be held */
1150 void
1151 zoran_feed_stat_com (struct zoran *zr)
1152 {
1153 /* move frames from pending queue to DMA */
1154
1155 int frame, i, max_stat_com;
1156
1157 max_stat_com =
1158 (zr->jpg_settings.TmpDcm ==
1159 1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1160
1161 while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1162 zr->jpg_dma_head < zr->jpg_que_head) {
1163
1164 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1165 if (zr->jpg_settings.TmpDcm == 1) {
1166 /* fill 1 stat_com entry */
1167 i = (zr->jpg_dma_head -
1168 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1169 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1170 break;
1171 zr->stat_com[i] =
1172 cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1173 } else {
1174 /* fill 2 stat_com entries */
1175 i = ((zr->jpg_dma_head -
1176 zr->jpg_err_shift) & 1) * 2;
1177 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1178 break;
1179 zr->stat_com[i] =
1180 cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1181 zr->stat_com[i + 1] =
1182 cpu_to_le32(zr->jpg_buffers.buffer[frame].frag_tab_bus);
1183 }
1184 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1185 zr->jpg_dma_head++;
1186
1187 }
1188 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1189 zr->jpg_queued_num++;
1190 }
1191
1192 /* when this is called the spinlock must be held */
1193 static void
1194 zoran_reap_stat_com (struct zoran *zr)
1195 {
1196 /* move frames from DMA queue to done queue */
1197
1198 int i;
1199 u32 stat_com;
1200 unsigned int seq;
1201 unsigned int dif;
1202 struct zoran_jpg_buffer *buffer;
1203 int frame;
1204
1205 /* In motion decompress we don't have a hardware frame counter,
1206 * we just count the interrupts here */
1207
1208 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1209 zr->jpg_seq_num++;
1210 }
1211 while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1212 if (zr->jpg_settings.TmpDcm == 1)
1213 i = (zr->jpg_dma_tail -
1214 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1215 else
1216 i = ((zr->jpg_dma_tail -
1217 zr->jpg_err_shift) & 1) * 2 + 1;
1218
1219 stat_com = le32_to_cpu(zr->stat_com[i]);
1220
1221 if ((stat_com & 1) == 0) {
1222 return;
1223 }
1224 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1225 buffer = &zr->jpg_buffers.buffer[frame];
1226 do_gettimeofday(&buffer->bs.timestamp);
1227
1228 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1229 buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1230
1231 /* update sequence number with the help of the counter in stat_com */
1232
1233 seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1234 dif = (seq - zr->jpg_seq_num) & 0xff;
1235 zr->jpg_seq_num += dif;
1236 } else {
1237 buffer->bs.length = 0;
1238 }
1239 buffer->bs.seq =
1240 zr->jpg_settings.TmpDcm ==
1241 2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1242 buffer->state = BUZ_STATE_DONE;
1243
1244 zr->jpg_dma_tail++;
1245 }
1246 }
1247
1248 static void
1249 error_handler (struct zoran *zr,
1250 u32 astat,
1251 u32 stat)
1252 {
1253 /* This is JPEG error handling part */
1254 if ((zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) &&
1255 (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS)) {
1256 //dprintk(1, KERN_ERR "%s: Internal error: error handling request in mode %d\n", ZR_DEVNAME(zr), zr->codec_mode);
1257 return;
1258 }
1259
1260 if ((stat & 1) == 0 &&
1261 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1262 zr->jpg_dma_tail - zr->jpg_que_tail >=
1263 zr->jpg_buffers.num_buffers) {
1264 /* No free buffers... */
1265 zoran_reap_stat_com(zr);
1266 zoran_feed_stat_com(zr);
1267 wake_up_interruptible(&zr->jpg_capq);
1268 zr->JPEG_missed = 0;
1269 return;
1270 }
1271
1272 if (zr->JPEG_error != 1) {
1273 /*
1274 * First entry: error just happened during normal operation
1275 *
1276 * In BUZ_MODE_MOTION_COMPRESS:
1277 *
1278 * Possible glitch in TV signal. In this case we should
1279 * stop the codec and wait for good quality signal before
1280 * restarting it to avoid further problems
1281 *
1282 * In BUZ_MODE_MOTION_DECOMPRESS:
1283 *
1284 * Bad JPEG frame: we have to mark it as processed (codec crashed
1285 * and was not able to do it itself), and to remove it from queue.
1286 */
1287 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1288 udelay(1);
1289 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1290 btwrite(0, ZR36057_JPC);
1291 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1292 jpeg_codec_reset(zr);
1293 jpeg_codec_sleep(zr, 1);
1294 zr->JPEG_error = 1;
1295 zr->num_errors++;
1296
1297 /* Report error */
1298 if (*zr_debug > 1 && zr->num_errors <= 8) {
1299 long frame;
1300 frame =
1301 zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1302 printk(KERN_ERR
1303 "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1304 ZR_DEVNAME(zr), stat, zr->last_isr,
1305 zr->jpg_que_tail, zr->jpg_dma_tail,
1306 zr->jpg_dma_head, zr->jpg_que_head,
1307 zr->jpg_seq_num, frame);
1308 printk("stat_com frames:");
1309 {
1310 int i, j;
1311 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1312 for (i = 0;
1313 i < zr->jpg_buffers.num_buffers;
1314 i++) {
1315 if (le32_to_cpu(zr->stat_com[j]) ==
1316 zr->jpg_buffers.
1317 buffer[i].
1318 frag_tab_bus) {
1319 printk("% d->%d",
1320 j, i);
1321 }
1322 }
1323 }
1324 printk("\n");
1325 }
1326 }
1327 /* Find an entry in stat_com and rotate contents */
1328 {
1329 int i;
1330
1331 if (zr->jpg_settings.TmpDcm == 1)
1332 i = (zr->jpg_dma_tail -
1333 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1334 else
1335 i = ((zr->jpg_dma_tail -
1336 zr->jpg_err_shift) & 1) * 2;
1337 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1338 /* Mimic zr36067 operation */
1339 zr->stat_com[i] |= cpu_to_le32(1);
1340 if (zr->jpg_settings.TmpDcm != 1)
1341 zr->stat_com[i + 1] |= cpu_to_le32(1);
1342 /* Refill */
1343 zoran_reap_stat_com(zr);
1344 zoran_feed_stat_com(zr);
1345 wake_up_interruptible(&zr->jpg_capq);
1346 /* Find an entry in stat_com again after refill */
1347 if (zr->jpg_settings.TmpDcm == 1)
1348 i = (zr->jpg_dma_tail -
1349 zr->jpg_err_shift) &
1350 BUZ_MASK_STAT_COM;
1351 else
1352 i = ((zr->jpg_dma_tail -
1353 zr->jpg_err_shift) & 1) * 2;
1354 }
1355 if (i) {
1356 /* Rotate stat_comm entries to make current entry first */
1357 int j;
1358 u32 bus_addr[BUZ_NUM_STAT_COM];
1359
1360 /* Here we are copying the stat_com array, which
1361 * is already in little endian format, so
1362 * no endian conversions here
1363 */
1364 memcpy(bus_addr, zr->stat_com,
1365 sizeof(bus_addr));
1366 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1367 zr->stat_com[j] =
1368 bus_addr[(i + j) &
1369 BUZ_MASK_STAT_COM];
1370
1371 }
1372 zr->jpg_err_shift += i;
1373 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1374 }
1375 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1376 zr->jpg_err_seq = zr->jpg_seq_num; /* + 1; */
1377 }
1378 }
1379
1380 /* Now the stat_comm buffer is ready for restart */
1381 do {
1382 int status, mode;
1383
1384 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1385 decoder_command(zr, DECODER_GET_STATUS, &status);
1386 mode = CODEC_DO_COMPRESSION;
1387 } else {
1388 status = 0;
1389 mode = CODEC_DO_EXPANSION;
1390 }
1391 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1392 (status & DECODER_STATUS_GOOD)) {
1393 /********** RESTART code *************/
1394 jpeg_codec_reset(zr);
1395 zr->codec->set_mode(zr->codec, mode);
1396 zr36057_set_jpg(zr, zr->codec_mode);
1397 jpeg_start(zr);
1398
1399 if (zr->num_errors <= 8)
1400 dprintk(2, KERN_INFO "%s: Restart\n",
1401 ZR_DEVNAME(zr));
1402
1403 zr->JPEG_missed = 0;
1404 zr->JPEG_error = 2;
1405 /********** End RESTART code ***********/
1406 }
1407 } while (0);
1408 }
1409
1410 irqreturn_t
1411 zoran_irq (int irq,
1412 void *dev_id,
1413 struct pt_regs *regs)
1414 {
1415 u32 stat, astat;
1416 int count;
1417 struct zoran *zr;
1418 unsigned long flags;
1419
1420 zr = (struct zoran *) dev_id;
1421 count = 0;
1422
1423 if (zr->testing) {
1424 /* Testing interrupts */
1425 spin_lock_irqsave(&zr->spinlock, flags);
1426 while ((stat = count_reset_interrupt(zr))) {
1427 if (count++ > 100) {
1428 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1429 dprintk(1,
1430 KERN_ERR
1431 "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1432 ZR_DEVNAME(zr), stat);
1433 wake_up_interruptible(&zr->test_q);
1434 }
1435 }
1436 zr->last_isr = stat;
1437 spin_unlock_irqrestore(&zr->spinlock, flags);
1438 return IRQ_HANDLED;
1439 }
1440
1441 spin_lock_irqsave(&zr->spinlock, flags);
1442 while (1) {
1443 /* get/clear interrupt status bits */
1444 stat = count_reset_interrupt(zr);
1445 astat = stat & IRQ_MASK;
1446 if (!astat) {
1447 break;
1448 }
1449 dprintk(4,
1450 KERN_DEBUG
1451 "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1452 astat, btread(ZR36057_ICR));
1453 if (astat & zr->card.vsync_int) { // SW
1454
1455 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1456 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1457 /* count missed interrupts */
1458 zr->JPEG_missed++;
1459 }
1460 //post_office_read(zr,1,0);
1461 /* Interrupts may still happen when
1462 * zr->v4l_memgrab_active is switched off.
1463 * We simply ignore them */
1464
1465 if (zr->v4l_memgrab_active) {
1466
1467 /* A lot more checks should be here ... */
1468 if ((btread(ZR36057_VSSFGR) &
1469 ZR36057_VSSFGR_SnapShot) == 0)
1470 dprintk(1,
1471 KERN_WARNING
1472 "%s: BuzIRQ with SnapShot off ???\n",
1473 ZR_DEVNAME(zr));
1474
1475 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1476 /* There is a grab on a frame going on, check if it has finished */
1477
1478 if ((btread(ZR36057_VSSFGR) &
1479 ZR36057_VSSFGR_FrameGrab) ==
1480 0) {
1481 /* it is finished, notify the user */
1482
1483 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1484 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1485 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1486 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1487 zr->v4l_pend_tail++;
1488 }
1489 }
1490
1491 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1492 wake_up_interruptible(&zr->v4l_capq);
1493
1494 /* Check if there is another grab queued */
1495
1496 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1497 zr->v4l_pend_tail != zr->v4l_pend_head) {
1498
1499 int frame = zr->v4l_pend[zr->v4l_pend_tail &
1500 V4L_MASK_FRAME];
1501 u32 reg;
1502
1503 zr->v4l_grab_frame = frame;
1504
1505 /* Set zr36057 video front end and enable video */
1506
1507 /* Buffer address */
1508
1509 reg =
1510 zr->v4l_buffers.buffer[frame].
1511 fbuffer_bus;
1512 btwrite(reg, ZR36057_VDTR);
1513 if (zr->v4l_settings.height >
1514 BUZ_MAX_HEIGHT / 2)
1515 reg +=
1516 zr->v4l_settings.
1517 bytesperline;
1518 btwrite(reg, ZR36057_VDBR);
1519
1520 /* video stride, status, and frame grab register */
1521 reg = 0;
1522 if (zr->v4l_settings.height >
1523 BUZ_MAX_HEIGHT / 2)
1524 reg +=
1525 zr->v4l_settings.
1526 bytesperline;
1527 reg =
1528 (reg <<
1529 ZR36057_VSSFGR_DispStride);
1530 reg |= ZR36057_VSSFGR_VidOvf;
1531 reg |= ZR36057_VSSFGR_SnapShot;
1532 reg |= ZR36057_VSSFGR_FrameGrab;
1533 btwrite(reg, ZR36057_VSSFGR);
1534
1535 btor(ZR36057_VDCR_VidEn,
1536 ZR36057_VDCR);
1537 }
1538 }
1539
1540 /* even if we don't grab, we do want to increment
1541 * the sequence counter to see lost frames */
1542 zr->v4l_grab_seq++;
1543 }
1544 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1545 if (astat & ZR36057_ISR_CodRepIRQ) {
1546 zr->intr_counter_CodRepIRQ++;
1547 IDEBUG(printk
1548 (KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1549 ZR_DEVNAME(zr)));
1550 btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1551 }
1552 #endif /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1553
1554 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1555 if (astat & ZR36057_ISR_JPEGRepIRQ) {
1556
1557 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1558 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1559 if (*zr_debug > 1 &&
1560 (!zr->frame_num || zr->JPEG_error)) {
1561 printk(KERN_INFO
1562 "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1563 ZR_DEVNAME(zr), stat,
1564 zr->jpg_settings.odd_even,
1565 zr->jpg_settings.
1566 field_per_buff,
1567 zr->JPEG_missed);
1568 {
1569 char sc[] = "0000";
1570 char sv[5];
1571 int i;
1572 strcpy(sv, sc);
1573 for (i = 0; i < 4; i++) {
1574 if (le32_to_cpu(zr->stat_com[i]) & 1)
1575 sv[i] = '1';
1576 }
1577 sv[4] = 0;
1578 printk(KERN_INFO
1579 "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1580 ZR_DEVNAME(zr), sv,
1581 zr->jpg_que_tail,
1582 zr->jpg_dma_tail,
1583 zr->jpg_dma_head,
1584 zr->jpg_que_head);
1585 }
1586 } else {
1587 if (zr->JPEG_missed > zr->JPEG_max_missed) // Get statistics
1588 zr->JPEG_max_missed =
1589 zr->JPEG_missed;
1590 if (zr->JPEG_missed <
1591 zr->JPEG_min_missed)
1592 zr->JPEG_min_missed =
1593 zr->JPEG_missed;
1594 }
1595
1596 if (*zr_debug > 2 && zr->frame_num < 6) {
1597 int i;
1598 printk("%s: seq=%ld stat_com:",
1599 ZR_DEVNAME(zr), zr->jpg_seq_num);
1600 for (i = 0; i < 4; i++) {
1601 printk(" %08x",
1602 le32_to_cpu(zr->stat_com[i]));
1603 }
1604 printk("\n");
1605 }
1606 zr->frame_num++;
1607 zr->JPEG_missed = 0;
1608 zr->JPEG_error = 0;
1609 zoran_reap_stat_com(zr);
1610 zoran_feed_stat_com(zr);
1611 wake_up_interruptible(&zr->jpg_capq);
1612 } /*else {
1613 dprintk(1,
1614 KERN_ERR
1615 "%s: JPEG interrupt while not in motion (de)compress mode!\n",
1616 ZR_DEVNAME(zr));
1617 }*/
1618 }
1619 #endif /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1620
1621 /* DATERR, too many fields missed, error processing */
1622 if ((astat & zr->card.jpeg_int) ||
1623 zr->JPEG_missed > 25 ||
1624 zr->JPEG_error == 1 ||
1625 ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1626 (zr->frame_num & (zr->JPEG_missed >
1627 zr->jpg_settings.field_per_buff)))) {
1628 error_handler(zr, astat, stat);
1629 }
1630
1631 count++;
1632 if (count > 10) {
1633 dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1634 ZR_DEVNAME(zr), count);
1635 if (count > 20) {
1636 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1637 dprintk(2,
1638 KERN_ERR
1639 "%s: IRQ lockup, cleared int mask\n",
1640 ZR_DEVNAME(zr));
1641 break;
1642 }
1643 }
1644 zr->last_isr = stat;
1645 }
1646 spin_unlock_irqrestore(&zr->spinlock, flags);
1647
1648 return IRQ_HANDLED;
1649 }
1650
1651 void
1652 zoran_set_pci_master (struct zoran *zr,
1653 int set_master)
1654 {
1655 if (set_master) {
1656 pci_set_master(zr->pci_dev);
1657 } else {
1658 u16 command;
1659
1660 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1661 command &= ~PCI_COMMAND_MASTER;
1662 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1663 }
1664 }
1665
1666 void
1667 zoran_init_hardware (struct zoran *zr)
1668 {
1669 int j, zero = 0;
1670
1671 /* Enable bus-mastering */
1672 zoran_set_pci_master(zr, 1);
1673
1674 /* Initialize the board */
1675 if (zr->card.init) {
1676 zr->card.init(zr);
1677 }
1678
1679 j = zr->card.input[zr->input].muxsel;
1680
1681 decoder_command(zr, 0, NULL);
1682 decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1683 decoder_command(zr, DECODER_SET_INPUT, &j);
1684
1685 encoder_command(zr, 0, NULL);
1686 encoder_command(zr, ENCODER_SET_NORM, &zr->norm);
1687 encoder_command(zr, ENCODER_SET_INPUT, &zero);
1688
1689 /* toggle JPEG codec sleep to sync PLL */
1690 jpeg_codec_sleep(zr, 1);
1691 jpeg_codec_sleep(zr, 0);
1692
1693 /* set individual interrupt enables (without GIRQ1)
1694 * but don't global enable until zoran_open() */
1695
1696 //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR); // SW
1697 // It looks like using only JPEGRepIRQEn is not always reliable,
1698 // may be when JPEG codec crashes it won't generate IRQ? So,
1699 /*CP*/ // btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM WHY ? LP
1700 zr36057_init_vfe(zr);
1701
1702 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1703
1704 btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1705 }
1706
1707 void
1708 zr36057_restart (struct zoran *zr)
1709 {
1710 btwrite(0, ZR36057_SPGPPCR);
1711 mdelay(1);
1712 btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1713 mdelay(1);
1714
1715 /* assert P_Reset */
1716 btwrite(0, ZR36057_JPC);
1717 /* set up GPIO direction - all output */
1718 btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1719
1720 /* set up GPIO pins and guest bus timing */
1721 btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1722 }
1723
1724 /*
1725 * initialize video front end
1726 */
1727
1728 static void
1729 zr36057_init_vfe (struct zoran *zr)
1730 {
1731 u32 reg;
1732
1733 reg = btread(ZR36057_VFESPFR);
1734 reg |= ZR36057_VFESPFR_LittleEndian;
1735 reg &= ~ZR36057_VFESPFR_VCLKPol;
1736 reg |= ZR36057_VFESPFR_ExtFl;
1737 reg |= ZR36057_VFESPFR_TopField;
1738 btwrite(reg, ZR36057_VFESPFR);
1739 reg = btread(ZR36057_VDCR);
1740 if (pci_pci_problems & PCIPCI_TRITON)
1741 // || zr->revision < 1) // Revision 1 has also Triton support
1742 reg &= ~ZR36057_VDCR_Triton;
1743 else
1744 reg |= ZR36057_VDCR_Triton;
1745 btwrite(reg, ZR36057_VDCR);
1746 }
1747
1748 /*
1749 * Interface to decoder and encoder chips using i2c bus
1750 */
1751
1752 int
1753 decoder_command (struct zoran *zr,
1754 int cmd,
1755 void *data)
1756 {
1757 if (zr->decoder == NULL)
1758 return -EIO;
1759
1760 if (zr->card.type == LML33 &&
1761 (cmd == DECODER_SET_NORM || DECODER_SET_INPUT)) {
1762 int res;
1763
1764 // Bt819 needs to reset its FIFO buffer using #FRST pin and
1765 // LML33 card uses GPIO(7) for that.
1766 GPIO(zr, 7, 0);
1767 res = zr->decoder->driver->command(zr->decoder, cmd, data);
1768 // Pull #FRST high.
1769 GPIO(zr, 7, 1);
1770 return res;
1771 } else
1772 return zr->decoder->driver->command(zr->decoder, cmd,
1773 data);
1774 }
1775
1776 int
1777 encoder_command (struct zoran *zr,
1778 int cmd,
1779 void *data)
1780 {
1781 if (zr->encoder == NULL)
1782 return -1;
1783
1784 return zr->encoder->driver->command(zr->encoder, cmd, data);
1785 }
Verdex Pro support