1 /*
2 * Zoran zr36057/zr36067 PCI controller driver, for the
3 * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
4 * Media Labs LML33/LML33R10.
5 *
6 * This part handles device access (PCI/I2C/codec/...)
7 *
8 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
9 *
10 * Currently maintained by:
11 * Ronald Bultje <rbultje@ronald.bitfreak.net>
12 * Laurent Pinchart <laurent.pinchart@skynet.be>
13 * Mailinglist <mjpeg-users@lists.sf.net>
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30 #include <linux/types.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/vmalloc.h>
34
35 #include <linux/interrupt.h>
36 #include <linux/proc_fs.h>
37 #include <linux/i2c.h>
38 #include <linux/i2c-algo-bit.h>
39 #include <linux/videodev2.h>
40 #include <media/v4l2-common.h>
41 #include <linux/spinlock.h>
42 #include <linux/sem.h>
43
44 #include <linux/pci.h>
45 #include <linux/delay.h>
46 #include <linux/wait.h>
47
48 #include <asm/byteorder.h>
49 #include <asm/io.h>
50
51 #include "videocodec.h"
52 #include "zoran.h"
53 #include "zoran_device.h"
54 #include "zoran_card.h"
55
56 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
57 ZR36057_ISR_GIRQ1 | \
58 ZR36057_ISR_JPEGRepIRQ )
59
60 static bool lml33dpath; /* default = 0
61 * 1 will use digital path in capture
62 * mode instead of analog. It can be
63 * used for picture adjustments using
64 * tool like xawtv while watching image
65 * on TV monitor connected to the output.
66 * However, due to absence of 75 Ohm
67 * load on Bt819 input, there will be
68 * some image imperfections */
69
70 module_param(lml33dpath, bool, 0644);
71 MODULE_PARM_DESC(lml33dpath,
72 "Use digital path capture mode (on LML33 cards)");
73
74 static void
75 zr36057_init_vfe (struct zoran *zr);
76
77 /*
78 * General Purpose I/O and Guest bus access
79 */
80
81 /*
82 * This is a bit tricky. When a board lacks a GPIO function, the corresponding
83 * GPIO bit number in the card_info structure is set to 0.
84 */
85
86 void
GPIO(struct zoran * zr,int bit,unsigned int value)87 GPIO (struct zoran *zr,
88 int bit,
89 unsigned int value)
90 {
91 u32 reg;
92 u32 mask;
93
94 /* Make sure the bit number is legal
95 * A bit number of -1 (lacking) gives a mask of 0,
96 * making it harmless */
97 mask = (1 << (24 + bit)) & 0xff000000;
98 reg = btread(ZR36057_GPPGCR1) & ~mask;
99 if (value) {
100 reg |= mask;
101 }
102 btwrite(reg, ZR36057_GPPGCR1);
103 udelay(1);
104 }
105
106 /*
107 * Wait til post office is no longer busy
108 */
109
110 int
post_office_wait(struct zoran * zr)111 post_office_wait (struct zoran *zr)
112 {
113 u32 por;
114
115 // while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
116 while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
117 /* wait for something to happen */
118 }
119 if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
120 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
121 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
122 por);
123 return -1;
124 }
125
126 return 0;
127 }
128
129 int
post_office_write(struct zoran * zr,unsigned int guest,unsigned int reg,unsigned int value)130 post_office_write (struct zoran *zr,
131 unsigned int guest,
132 unsigned int reg,
133 unsigned int value)
134 {
135 u32 por;
136
137 por =
138 ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
139 ((reg & 7) << 16) | (value & 0xFF);
140 btwrite(por, ZR36057_POR);
141
142 return post_office_wait(zr);
143 }
144
145 int
post_office_read(struct zoran * zr,unsigned int guest,unsigned int reg)146 post_office_read (struct zoran *zr,
147 unsigned int guest,
148 unsigned int reg)
149 {
150 u32 por;
151
152 por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
153 btwrite(por, ZR36057_POR);
154 if (post_office_wait(zr) < 0) {
155 return -1;
156 }
157
158 return btread(ZR36057_POR) & 0xFF;
159 }
160
161 /*
162 * detect guests
163 */
164
165 static void
dump_guests(struct zoran * zr)166 dump_guests (struct zoran *zr)
167 {
168 if (zr36067_debug > 2) {
169 int i, guest[8];
170
171 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
172 guest[i] = post_office_read(zr, i, 0);
173 }
174
175 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
176
177 for (i = 1; i < 8; i++) {
178 printk(" 0x%02x", guest[i]);
179 }
180 printk("\n");
181 }
182 }
183
184 static inline unsigned long
get_time(void)185 get_time (void)
186 {
187 struct timeval tv;
188
189 do_gettimeofday(&tv);
190 return (1000000 * tv.tv_sec + tv.tv_usec);
191 }
192
193 void
detect_guest_activity(struct zoran * zr)194 detect_guest_activity (struct zoran *zr)
195 {
196 int timeout, i, j, res, guest[8], guest0[8], change[8][3];
197 unsigned long t0, t1;
198
199 dump_guests(zr);
200 printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
201 ZR_DEVNAME(zr));
202 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
203 guest0[i] = guest[i] = post_office_read(zr, i, 0);
204 }
205
206 timeout = 0;
207 j = 0;
208 t0 = get_time();
209 while (timeout < 10000) {
210 udelay(10);
211 timeout++;
212 for (i = 1; (i < 8) && (j < 8); i++) {
213 res = post_office_read(zr, i, 0);
214 if (res != guest[i]) {
215 t1 = get_time();
216 change[j][0] = (t1 - t0);
217 t0 = t1;
218 change[j][1] = i;
219 change[j][2] = res;
220 j++;
221 guest[i] = res;
222 }
223 }
224 if (j >= 8)
225 break;
226 }
227 printk(KERN_INFO "%s: Guests:", ZR_DEVNAME(zr));
228
229 for (i = 1; i < 8; i++) {
230 printk(" 0x%02x", guest0[i]);
231 }
232 printk("\n");
233 if (j == 0) {
234 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
235 return;
236 }
237 for (i = 0; i < j; i++) {
238 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
239 change[i][0], change[i][1], change[i][2]);
240 }
241 }
242
243 /*
244 * JPEG Codec access
245 */
246
247 void
jpeg_codec_sleep(struct zoran * zr,int sleep)248 jpeg_codec_sleep (struct zoran *zr,
249 int sleep)
250 {
251 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
252 if (!sleep) {
253 dprintk(3,
254 KERN_DEBUG
255 "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
256 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
257 udelay(500);
258 } else {
259 dprintk(3,
260 KERN_DEBUG
261 "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
262 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
263 udelay(2);
264 }
265 }
266
267 int
jpeg_codec_reset(struct zoran * zr)268 jpeg_codec_reset (struct zoran *zr)
269 {
270 /* Take the codec out of sleep */
271 jpeg_codec_sleep(zr, 0);
272
273 if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
274 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
275 0);
276 udelay(2);
277 } else {
278 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
279 udelay(2);
280 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
281 udelay(2);
282 }
283
284 return 0;
285 }
286
287 /*
288 * Set the registers for the size we have specified. Don't bother
289 * trying to understand this without the ZR36057 manual in front of
290 * you [AC].
291 *
292 * PS: The manual is free for download in .pdf format from
293 * www.zoran.com - nicely done those folks.
294 */
295
296 static void
zr36057_adjust_vfe(struct zoran * zr,enum zoran_codec_mode mode)297 zr36057_adjust_vfe (struct zoran *zr,
298 enum zoran_codec_mode mode)
299 {
300 u32 reg;
301
302 switch (mode) {
303 case BUZ_MODE_MOTION_DECOMPRESS:
304 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
305 reg = btread(ZR36057_VFEHCR);
306 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
307 reg += ((1 << 10) | 1);
308 }
309 btwrite(reg, ZR36057_VFEHCR);
310 break;
311 case BUZ_MODE_MOTION_COMPRESS:
312 case BUZ_MODE_IDLE:
313 default:
314 if ((zr->norm & V4L2_STD_NTSC) ||
315 (zr->card.type == LML33R10 &&
316 (zr->norm & V4L2_STD_PAL)))
317 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
318 else
319 btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
320 reg = btread(ZR36057_VFEHCR);
321 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
322 reg -= ((1 << 10) | 1);
323 }
324 btwrite(reg, ZR36057_VFEHCR);
325 break;
326 }
327 }
328
329 /*
330 * set geometry
331 */
332
333 static void
zr36057_set_vfe(struct zoran * zr,int video_width,int video_height,const struct zoran_format * format)334 zr36057_set_vfe (struct zoran *zr,
335 int video_width,
336 int video_height,
337 const struct zoran_format *format)
338 {
339 struct tvnorm *tvn;
340 unsigned HStart, HEnd, VStart, VEnd;
341 unsigned DispMode;
342 unsigned VidWinWid, VidWinHt;
343 unsigned hcrop1, hcrop2, vcrop1, vcrop2;
344 unsigned Wa, We, Ha, He;
345 unsigned X, Y, HorDcm, VerDcm;
346 u32 reg;
347 unsigned mask_line_size;
348
349 tvn = zr->timing;
350
351 Wa = tvn->Wa;
352 Ha = tvn->Ha;
353
354 dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
355 ZR_DEVNAME(zr), video_width, video_height);
356
357 if (video_width < BUZ_MIN_WIDTH ||
358 video_height < BUZ_MIN_HEIGHT ||
359 video_width > Wa || video_height > Ha) {
360 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
361 ZR_DEVNAME(zr), video_width, video_height);
362 return;
363 }
364
365 /**** zr36057 ****/
366
367 /* horizontal */
368 VidWinWid = video_width;
369 X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
370 We = (VidWinWid * 64) / X;
371 HorDcm = 64 - X;
372 hcrop1 = 2 * ((tvn->Wa - We) / 4);
373 hcrop2 = tvn->Wa - We - hcrop1;
374 HStart = tvn->HStart ? tvn->HStart : 1;
375 /* (Ronald) Original comment:
376 * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
377 * this is false. It inverses chroma values on the LML33R10 (so Cr
378 * suddenly is shown as Cb and reverse, really cool effect if you
379 * want to see blue faces, not useful otherwise). So don't use |1.
380 * However, the DC10 has '0' as HStart, but does need |1, so we
381 * use a dirty check...
382 */
383 HEnd = HStart + tvn->Wa - 1;
384 HStart += hcrop1;
385 HEnd -= hcrop2;
386 reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
387 | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
388 if (zr->card.vfe_pol.hsync_pol)
389 reg |= ZR36057_VFEHCR_HSPol;
390 btwrite(reg, ZR36057_VFEHCR);
391
392 /* Vertical */
393 DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
394 VidWinHt = DispMode ? video_height : video_height / 2;
395 Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
396 He = (VidWinHt * 64) / Y;
397 VerDcm = 64 - Y;
398 vcrop1 = (tvn->Ha / 2 - He) / 2;
399 vcrop2 = tvn->Ha / 2 - He - vcrop1;
400 VStart = tvn->VStart;
401 VEnd = VStart + tvn->Ha / 2; // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
402 VStart += vcrop1;
403 VEnd -= vcrop2;
404 reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
405 | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
406 if (zr->card.vfe_pol.vsync_pol)
407 reg |= ZR36057_VFEVCR_VSPol;
408 btwrite(reg, ZR36057_VFEVCR);
409
410 /* scaler and pixel format */
411 reg = 0;
412 reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
413 reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
414 reg |= (DispMode << ZR36057_VFESPFR_DispMode);
415 /* RJ: I don't know, why the following has to be the opposite
416 * of the corresponding ZR36060 setting, but only this way
417 * we get the correct colors when uncompressing to the screen */
418 //reg |= ZR36057_VFESPFR_VCLKPol; /**/
419 /* RJ: Don't know if that is needed for NTSC also */
420 if (!(zr->norm & V4L2_STD_NTSC))
421 reg |= ZR36057_VFESPFR_ExtFl; // NEEDED!!!!!!! Wolfgang
422 reg |= ZR36057_VFESPFR_TopField;
423 if (HorDcm >= 48) {
424 reg |= 3 << ZR36057_VFESPFR_HFilter; /* 5 tap filter */
425 } else if (HorDcm >= 32) {
426 reg |= 2 << ZR36057_VFESPFR_HFilter; /* 4 tap filter */
427 } else if (HorDcm >= 16) {
428 reg |= 1 << ZR36057_VFESPFR_HFilter; /* 3 tap filter */
429 }
430 reg |= format->vfespfr;
431 btwrite(reg, ZR36057_VFESPFR);
432
433 /* display configuration */
434 reg = (16 << ZR36057_VDCR_MinPix)
435 | (VidWinHt << ZR36057_VDCR_VidWinHt)
436 | (VidWinWid << ZR36057_VDCR_VidWinWid);
437 if (pci_pci_problems & PCIPCI_TRITON)
438 // || zr->revision < 1) // Revision 1 has also Triton support
439 reg &= ~ZR36057_VDCR_Triton;
440 else
441 reg |= ZR36057_VDCR_Triton;
442 btwrite(reg, ZR36057_VDCR);
443
444 /* (Ronald) don't write this if overlay_mask = NULL */
445 if (zr->overlay_mask) {
446 /* Write overlay clipping mask data, but don't enable overlay clipping */
447 /* RJ: since this makes only sense on the screen, we use
448 * zr->overlay_settings.width instead of video_width */
449
450 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
451 reg = virt_to_bus(zr->overlay_mask);
452 btwrite(reg, ZR36057_MMTR);
453 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
454 btwrite(reg, ZR36057_MMBR);
455 reg =
456 mask_line_size - (zr->overlay_settings.width +
457 31) / 32;
458 if (DispMode == 0)
459 reg += mask_line_size;
460 reg <<= ZR36057_OCR_MaskStride;
461 btwrite(reg, ZR36057_OCR);
462 }
463
464 zr36057_adjust_vfe(zr, zr->codec_mode);
465 }
466
467 /*
468 * Switch overlay on or off
469 */
470
471 void
zr36057_overlay(struct zoran * zr,int on)472 zr36057_overlay (struct zoran *zr,
473 int on)
474 {
475 u32 reg;
476
477 if (on) {
478 /* do the necessary settings ... */
479 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR); /* switch it off first */
480
481 zr36057_set_vfe(zr,
482 zr->overlay_settings.width,
483 zr->overlay_settings.height,
484 zr->overlay_settings.format);
485
486 /* Start and length of each line MUST be 4-byte aligned.
487 * This should be already checked before the call to this routine.
488 * All error messages are internal driver checking only! */
489
490 /* video display top and bottom registers */
491 reg = (long) zr->vbuf_base +
492 zr->overlay_settings.x *
493 ((zr->overlay_settings.format->depth + 7) / 8) +
494 zr->overlay_settings.y *
495 zr->vbuf_bytesperline;
496 btwrite(reg, ZR36057_VDTR);
497 if (reg & 3)
498 dprintk(1,
499 KERN_ERR
500 "%s: zr36057_overlay() - video_address not aligned\n",
501 ZR_DEVNAME(zr));
502 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
503 reg += zr->vbuf_bytesperline;
504 btwrite(reg, ZR36057_VDBR);
505
506 /* video stride, status, and frame grab register */
507 reg = zr->vbuf_bytesperline -
508 zr->overlay_settings.width *
509 ((zr->overlay_settings.format->depth + 7) / 8);
510 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
511 reg += zr->vbuf_bytesperline;
512 if (reg & 3)
513 dprintk(1,
514 KERN_ERR
515 "%s: zr36057_overlay() - video_stride not aligned\n",
516 ZR_DEVNAME(zr));
517 reg = (reg << ZR36057_VSSFGR_DispStride);
518 reg |= ZR36057_VSSFGR_VidOvf; /* clear overflow status */
519 btwrite(reg, ZR36057_VSSFGR);
520
521 /* Set overlay clipping */
522 if (zr->overlay_settings.clipcount > 0)
523 btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
524
525 /* ... and switch it on */
526 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
527 } else {
528 /* Switch it off */
529 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
530 }
531 }
532
533 /*
534 * The overlay mask has one bit for each pixel on a scan line,
535 * and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
536 */
537
write_overlay_mask(struct zoran_fh * fh,struct v4l2_clip * vp,int count)538 void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
539 {
540 struct zoran *zr = fh->zr;
541 unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
542 u32 *mask;
543 int x, y, width, height;
544 unsigned i, j, k;
545 u32 reg;
546
547 /* fill mask with one bits */
548 memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
549 reg = 0;
550
551 for (i = 0; i < count; ++i) {
552 /* pick up local copy of clip */
553 x = vp[i].c.left;
554 y = vp[i].c.top;
555 width = vp[i].c.width;
556 height = vp[i].c.height;
557
558 /* trim clips that extend beyond the window */
559 if (x < 0) {
560 width += x;
561 x = 0;
562 }
563 if (y < 0) {
564 height += y;
565 y = 0;
566 }
567 if (x + width > fh->overlay_settings.width) {
568 width = fh->overlay_settings.width - x;
569 }
570 if (y + height > fh->overlay_settings.height) {
571 height = fh->overlay_settings.height - y;
572 }
573
574 /* ignore degenerate clips */
575 if (height <= 0) {
576 continue;
577 }
578 if (width <= 0) {
579 continue;
580 }
581
582 /* apply clip for each scan line */
583 for (j = 0; j < height; ++j) {
584 /* reset bit for each pixel */
585 /* this can be optimized later if need be */
586 mask = fh->overlay_mask + (y + j) * mask_line_size;
587 for (k = 0; k < width; ++k) {
588 mask[(x + k) / 32] &=
589 ~((u32) 1 << (x + k) % 32);
590 }
591 }
592 }
593 }
594
595 /* Enable/Disable uncompressed memory grabbing of the 36057 */
596
597 void
zr36057_set_memgrab(struct zoran * zr,int mode)598 zr36057_set_memgrab (struct zoran *zr,
599 int mode)
600 {
601 if (mode) {
602 /* We only check SnapShot and not FrameGrab here. SnapShot==1
603 * means a capture is already in progress, but FrameGrab==1
604 * doesn't necessary mean that. It's more correct to say a 1
605 * to 0 transition indicates a capture completed. If a
606 * capture is pending when capturing is tuned off, FrameGrab
607 * will be stuck at 1 until capturing is turned back on.
608 */
609 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
610 dprintk(1,
611 KERN_WARNING
612 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
613 ZR_DEVNAME(zr));
614
615 /* switch on VSync interrupts */
616 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
617 btor(zr->card.vsync_int, ZR36057_ICR); // SW
618
619 /* enable SnapShot */
620 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
621
622 /* Set zr36057 video front end and enable video */
623 zr36057_set_vfe(zr, zr->v4l_settings.width,
624 zr->v4l_settings.height,
625 zr->v4l_settings.format);
626
627 zr->v4l_memgrab_active = 1;
628 } else {
629 /* switch off VSync interrupts */
630 btand(~zr->card.vsync_int, ZR36057_ICR); // SW
631
632 zr->v4l_memgrab_active = 0;
633 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
634
635 /* reenable grabbing to screen if it was running */
636 if (zr->v4l_overlay_active) {
637 zr36057_overlay(zr, 1);
638 } else {
639 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
640 btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
641 }
642 }
643 }
644
645 int
wait_grab_pending(struct zoran * zr)646 wait_grab_pending (struct zoran *zr)
647 {
648 unsigned long flags;
649
650 /* wait until all pending grabs are finished */
651
652 if (!zr->v4l_memgrab_active)
653 return 0;
654
655 wait_event_interruptible(zr->v4l_capq,
656 (zr->v4l_pend_tail == zr->v4l_pend_head));
657 if (signal_pending(current))
658 return -ERESTARTSYS;
659
660 spin_lock_irqsave(&zr->spinlock, flags);
661 zr36057_set_memgrab(zr, 0);
662 spin_unlock_irqrestore(&zr->spinlock, flags);
663
664 return 0;
665 }
666
667 /*****************************************************************************
668 * *
669 * Set up the Buz-specific MJPEG part *
670 * *
671 *****************************************************************************/
672
673 static inline void
set_frame(struct zoran * zr,int val)674 set_frame (struct zoran *zr,
675 int val)
676 {
677 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
678 }
679
680 static void
set_videobus_dir(struct zoran * zr,int val)681 set_videobus_dir (struct zoran *zr,
682 int val)
683 {
684 switch (zr->card.type) {
685 case LML33:
686 case LML33R10:
687 if (lml33dpath == 0)
688 GPIO(zr, 5, val);
689 else
690 GPIO(zr, 5, 1);
691 break;
692 default:
693 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
694 zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
695 break;
696 }
697 }
698
699 static void
init_jpeg_queue(struct zoran * zr)700 init_jpeg_queue (struct zoran *zr)
701 {
702 int i;
703
704 /* re-initialize DMA ring stuff */
705 zr->jpg_que_head = 0;
706 zr->jpg_dma_head = 0;
707 zr->jpg_dma_tail = 0;
708 zr->jpg_que_tail = 0;
709 zr->jpg_seq_num = 0;
710 zr->JPEG_error = 0;
711 zr->num_errors = 0;
712 zr->jpg_err_seq = 0;
713 zr->jpg_err_shift = 0;
714 zr->jpg_queued_num = 0;
715 for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
716 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER; /* nothing going on */
717 }
718 for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
719 zr->stat_com[i] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
720 }
721 }
722
723 static void
zr36057_set_jpg(struct zoran * zr,enum zoran_codec_mode mode)724 zr36057_set_jpg (struct zoran *zr,
725 enum zoran_codec_mode mode)
726 {
727 struct tvnorm *tvn;
728 u32 reg;
729
730 tvn = zr->timing;
731
732 /* assert P_Reset, disable code transfer, deassert Active */
733 btwrite(0, ZR36057_JPC);
734
735 /* MJPEG compression mode */
736 switch (mode) {
737
738 case BUZ_MODE_MOTION_COMPRESS:
739 default:
740 reg = ZR36057_JMC_MJPGCmpMode;
741 break;
742
743 case BUZ_MODE_MOTION_DECOMPRESS:
744 reg = ZR36057_JMC_MJPGExpMode;
745 reg |= ZR36057_JMC_SyncMstr;
746 /* RJ: The following is experimental - improves the output to screen */
747 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
748 break;
749
750 case BUZ_MODE_STILL_COMPRESS:
751 reg = ZR36057_JMC_JPGCmpMode;
752 break;
753
754 case BUZ_MODE_STILL_DECOMPRESS:
755 reg = ZR36057_JMC_JPGExpMode;
756 break;
757
758 }
759 reg |= ZR36057_JMC_JPG;
760 if (zr->jpg_settings.field_per_buff == 1)
761 reg |= ZR36057_JMC_Fld_per_buff;
762 btwrite(reg, ZR36057_JMC);
763
764 /* vertical */
765 btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
766 reg = (6 << ZR36057_VSP_VsyncSize) |
767 (tvn->Ht << ZR36057_VSP_FrmTot);
768 btwrite(reg, ZR36057_VSP);
769 reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
770 (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
771 btwrite(reg, ZR36057_FVAP);
772
773 /* horizontal */
774 if (zr->card.vfe_pol.hsync_pol)
775 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
776 else
777 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
778 reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
779 (tvn->Wt << ZR36057_HSP_LineTot);
780 btwrite(reg, ZR36057_HSP);
781 reg = ((zr->jpg_settings.img_x +
782 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
783 (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
784 btwrite(reg, ZR36057_FHAP);
785
786 /* field process parameters */
787 if (zr->jpg_settings.odd_even)
788 reg = ZR36057_FPP_Odd_Even;
789 else
790 reg = 0;
791
792 btwrite(reg, ZR36057_FPP);
793
794 /* Set proper VCLK Polarity, else colors will be wrong during playback */
795 //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
796
797 /* code base address */
798 reg = virt_to_bus(zr->stat_com);
799 btwrite(reg, ZR36057_JCBA);
800
801 /* FIFO threshold (FIFO is 160. double words) */
802 /* NOTE: decimal values here */
803 switch (mode) {
804
805 case BUZ_MODE_STILL_COMPRESS:
806 case BUZ_MODE_MOTION_COMPRESS:
807 if (zr->card.type != BUZ)
808 reg = 140;
809 else
810 reg = 60;
811 break;
812
813 case BUZ_MODE_STILL_DECOMPRESS:
814 case BUZ_MODE_MOTION_DECOMPRESS:
815 reg = 20;
816 break;
817
818 default:
819 reg = 80;
820 break;
821
822 }
823 btwrite(reg, ZR36057_JCFT);
824 zr36057_adjust_vfe(zr, mode);
825
826 }
827
828 void
print_interrupts(struct zoran * zr)829 print_interrupts (struct zoran *zr)
830 {
831 int res, noerr = 0;
832
833 printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
834 if ((res = zr->field_counter) < -1 || res > 1) {
835 printk(" FD:%d", res);
836 }
837 if ((res = zr->intr_counter_GIRQ1) != 0) {
838 printk(" GIRQ1:%d", res);
839 noerr++;
840 }
841 if ((res = zr->intr_counter_GIRQ0) != 0) {
842 printk(" GIRQ0:%d", res);
843 noerr++;
844 }
845 if ((res = zr->intr_counter_CodRepIRQ) != 0) {
846 printk(" CodRepIRQ:%d", res);
847 noerr++;
848 }
849 if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
850 printk(" JPEGRepIRQ:%d", res);
851 noerr++;
852 }
853 if (zr->JPEG_max_missed) {
854 printk(" JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
855 zr->JPEG_min_missed);
856 }
857 if (zr->END_event_missed) {
858 printk(" ENDs missed: %d", zr->END_event_missed);
859 }
860 //if (zr->jpg_queued_num) {
861 printk(" queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
862 zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
863 //}
864 if (!noerr) {
865 printk(": no interrupts detected.");
866 }
867 printk("\n");
868 }
869
870 void
clear_interrupt_counters(struct zoran * zr)871 clear_interrupt_counters (struct zoran *zr)
872 {
873 zr->intr_counter_GIRQ1 = 0;
874 zr->intr_counter_GIRQ0 = 0;
875 zr->intr_counter_CodRepIRQ = 0;
876 zr->intr_counter_JPEGRepIRQ = 0;
877 zr->field_counter = 0;
878 zr->IRQ1_in = 0;
879 zr->IRQ1_out = 0;
880 zr->JPEG_in = 0;
881 zr->JPEG_out = 0;
882 zr->JPEG_0 = 0;
883 zr->JPEG_1 = 0;
884 zr->END_event_missed = 0;
885 zr->JPEG_missed = 0;
886 zr->JPEG_max_missed = 0;
887 zr->JPEG_min_missed = 0x7fffffff;
888 }
889
890 static u32
count_reset_interrupt(struct zoran * zr)891 count_reset_interrupt (struct zoran *zr)
892 {
893 u32 isr;
894
895 if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
896 if (isr & ZR36057_ISR_GIRQ1) {
897 btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
898 zr->intr_counter_GIRQ1++;
899 }
900 if (isr & ZR36057_ISR_GIRQ0) {
901 btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
902 zr->intr_counter_GIRQ0++;
903 }
904 if (isr & ZR36057_ISR_CodRepIRQ) {
905 btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
906 zr->intr_counter_CodRepIRQ++;
907 }
908 if (isr & ZR36057_ISR_JPEGRepIRQ) {
909 btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
910 zr->intr_counter_JPEGRepIRQ++;
911 }
912 }
913 return isr;
914 }
915
916 void
jpeg_start(struct zoran * zr)917 jpeg_start (struct zoran *zr)
918 {
919 int reg;
920
921 zr->frame_num = 0;
922
923 /* deassert P_reset, disable code transfer, deassert Active */
924 btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
925 /* stop flushing the internal code buffer */
926 btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
927 /* enable code transfer */
928 btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
929
930 /* clear IRQs */
931 btwrite(IRQ_MASK, ZR36057_ISR);
932 /* enable the JPEG IRQs */
933 btwrite(zr->card.jpeg_int |
934 ZR36057_ICR_JPEGRepIRQ |
935 ZR36057_ICR_IntPinEn,
936 ZR36057_ICR);
937
938 set_frame(zr, 0); // \FRAME
939
940 /* set the JPEG codec guest ID */
941 reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
942 (0 << ZR36057_JCGI_JPEGuestReg);
943 btwrite(reg, ZR36057_JCGI);
944
945 if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
946 zr->card.video_codec == CODEC_TYPE_ZR36050) {
947 /* Enable processing on the ZR36016 */
948 if (zr->vfe)
949 zr36016_write(zr->vfe, 0, 1);
950
951 /* load the address of the GO register in the ZR36050 latch */
952 post_office_write(zr, 0, 0, 0);
953 }
954
955 /* assert Active */
956 btor(ZR36057_JPC_Active, ZR36057_JPC);
957
958 /* enable the Go generation */
959 btor(ZR36057_JMC_Go_en, ZR36057_JMC);
960 udelay(30);
961
962 set_frame(zr, 1); // /FRAME
963
964 dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
965 }
966
967 void
zr36057_enable_jpg(struct zoran * zr,enum zoran_codec_mode mode)968 zr36057_enable_jpg (struct zoran *zr,
969 enum zoran_codec_mode mode)
970 {
971 struct vfe_settings cap;
972 int field_size =
973 zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
974
975 zr->codec_mode = mode;
976
977 cap.x = zr->jpg_settings.img_x;
978 cap.y = zr->jpg_settings.img_y;
979 cap.width = zr->jpg_settings.img_width;
980 cap.height = zr->jpg_settings.img_height;
981 cap.decimation =
982 zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
983 cap.quality = zr->jpg_settings.jpg_comp.quality;
984
985 switch (mode) {
986
987 case BUZ_MODE_MOTION_COMPRESS: {
988 struct jpeg_app_marker app;
989 struct jpeg_com_marker com;
990
991 /* In motion compress mode, the decoder output must be enabled, and
992 * the video bus direction set to input.
993 */
994 set_videobus_dir(zr, 0);
995 decoder_call(zr, video, s_stream, 1);
996 encoder_call(zr, video, s_routing, 0, 0, 0);
997
998 /* Take the JPEG codec and the VFE out of sleep */
999 jpeg_codec_sleep(zr, 0);
1000
1001 /* set JPEG app/com marker */
1002 app.appn = zr->jpg_settings.jpg_comp.APPn;
1003 app.len = zr->jpg_settings.jpg_comp.APP_len;
1004 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
1005 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
1006 sizeof(struct jpeg_app_marker), &app);
1007
1008 com.len = zr->jpg_settings.jpg_comp.COM_len;
1009 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
1010 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
1011 sizeof(struct jpeg_com_marker), &com);
1012
1013 /* Setup the JPEG codec */
1014 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
1015 sizeof(int), &field_size);
1016 zr->codec->set_video(zr->codec, zr->timing, &cap,
1017 &zr->card.vfe_pol);
1018 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
1019
1020 /* Setup the VFE */
1021 if (zr->vfe) {
1022 zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1023 sizeof(int), &field_size);
1024 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1025 &zr->card.vfe_pol);
1026 zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1027 }
1028
1029 init_jpeg_queue(zr);
1030 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1031
1032 clear_interrupt_counters(zr);
1033 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1034 ZR_DEVNAME(zr));
1035 break;
1036 }
1037
1038 case BUZ_MODE_MOTION_DECOMPRESS:
1039 /* In motion decompression mode, the decoder output must be disabled, and
1040 * the video bus direction set to output.
1041 */
1042 decoder_call(zr, video, s_stream, 0);
1043 set_videobus_dir(zr, 1);
1044 encoder_call(zr, video, s_routing, 1, 0, 0);
1045
1046 /* Take the JPEG codec and the VFE out of sleep */
1047 jpeg_codec_sleep(zr, 0);
1048 /* Setup the VFE */
1049 if (zr->vfe) {
1050 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1051 &zr->card.vfe_pol);
1052 zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1053 }
1054 /* Setup the JPEG codec */
1055 zr->codec->set_video(zr->codec, zr->timing, &cap,
1056 &zr->card.vfe_pol);
1057 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1058
1059 init_jpeg_queue(zr);
1060 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1061
1062 clear_interrupt_counters(zr);
1063 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1064 ZR_DEVNAME(zr));
1065 break;
1066
1067 case BUZ_MODE_IDLE:
1068 default:
1069 /* shut down processing */
1070 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1071 ZR36057_ICR);
1072 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1073 ZR36057_ISR);
1074 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1075
1076 msleep(50);
1077
1078 set_videobus_dir(zr, 0);
1079 set_frame(zr, 1); // /FRAME
1080 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR); // /CFlush
1081 btwrite(0, ZR36057_JPC); // \P_Reset,\CodTrnsEn,\Active
1082 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1083 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1084 jpeg_codec_reset(zr);
1085 jpeg_codec_sleep(zr, 1);
1086 zr36057_adjust_vfe(zr, mode);
1087
1088 decoder_call(zr, video, s_stream, 1);
1089 encoder_call(zr, video, s_routing, 0, 0, 0);
1090
1091 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1092 break;
1093
1094 }
1095 }
1096
1097 /* when this is called the spinlock must be held */
1098 void
zoran_feed_stat_com(struct zoran * zr)1099 zoran_feed_stat_com (struct zoran *zr)
1100 {
1101 /* move frames from pending queue to DMA */
1102
1103 int frame, i, max_stat_com;
1104
1105 max_stat_com =
1106 (zr->jpg_settings.TmpDcm ==
1107 1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1108
1109 while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1110 zr->jpg_dma_head < zr->jpg_que_head) {
1111
1112 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1113 if (zr->jpg_settings.TmpDcm == 1) {
1114 /* fill 1 stat_com entry */
1115 i = (zr->jpg_dma_head -
1116 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1117 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1118 break;
1119 zr->stat_com[i] =
1120 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1121 } else {
1122 /* fill 2 stat_com entries */
1123 i = ((zr->jpg_dma_head -
1124 zr->jpg_err_shift) & 1) * 2;
1125 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1126 break;
1127 zr->stat_com[i] =
1128 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1129 zr->stat_com[i + 1] =
1130 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1131 }
1132 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1133 zr->jpg_dma_head++;
1134
1135 }
1136 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1137 zr->jpg_queued_num++;
1138 }
1139
1140 /* when this is called the spinlock must be held */
1141 static void
zoran_reap_stat_com(struct zoran * zr)1142 zoran_reap_stat_com (struct zoran *zr)
1143 {
1144 /* move frames from DMA queue to done queue */
1145
1146 int i;
1147 u32 stat_com;
1148 unsigned int seq;
1149 unsigned int dif;
1150 struct zoran_buffer *buffer;
1151 int frame;
1152
1153 /* In motion decompress we don't have a hardware frame counter,
1154 * we just count the interrupts here */
1155
1156 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1157 zr->jpg_seq_num++;
1158 }
1159 while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1160 if (zr->jpg_settings.TmpDcm == 1)
1161 i = (zr->jpg_dma_tail -
1162 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1163 else
1164 i = ((zr->jpg_dma_tail -
1165 zr->jpg_err_shift) & 1) * 2 + 1;
1166
1167 stat_com = le32_to_cpu(zr->stat_com[i]);
1168
1169 if ((stat_com & 1) == 0) {
1170 return;
1171 }
1172 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1173 buffer = &zr->jpg_buffers.buffer[frame];
1174 do_gettimeofday(&buffer->bs.timestamp);
1175
1176 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1177 buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1178
1179 /* update sequence number with the help of the counter in stat_com */
1180
1181 seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1182 dif = (seq - zr->jpg_seq_num) & 0xff;
1183 zr->jpg_seq_num += dif;
1184 } else {
1185 buffer->bs.length = 0;
1186 }
1187 buffer->bs.seq =
1188 zr->jpg_settings.TmpDcm ==
1189 2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1190 buffer->state = BUZ_STATE_DONE;
1191
1192 zr->jpg_dma_tail++;
1193 }
1194 }
1195
zoran_restart(struct zoran * zr)1196 static void zoran_restart(struct zoran *zr)
1197 {
1198 /* Now the stat_comm buffer is ready for restart */
1199 unsigned int status = 0;
1200 int mode;
1201
1202 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1203 decoder_call(zr, video, g_input_status, &status);
1204 mode = CODEC_DO_COMPRESSION;
1205 } else {
1206 status = V4L2_IN_ST_NO_SIGNAL;
1207 mode = CODEC_DO_EXPANSION;
1208 }
1209 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1210 !(status & V4L2_IN_ST_NO_SIGNAL)) {
1211 /********** RESTART code *************/
1212 jpeg_codec_reset(zr);
1213 zr->codec->set_mode(zr->codec, mode);
1214 zr36057_set_jpg(zr, zr->codec_mode);
1215 jpeg_start(zr);
1216
1217 if (zr->num_errors <= 8)
1218 dprintk(2, KERN_INFO "%s: Restart\n",
1219 ZR_DEVNAME(zr));
1220
1221 zr->JPEG_missed = 0;
1222 zr->JPEG_error = 2;
1223 /********** End RESTART code ***********/
1224 }
1225 }
1226
1227 static void
error_handler(struct zoran * zr,u32 astat,u32 stat)1228 error_handler (struct zoran *zr,
1229 u32 astat,
1230 u32 stat)
1231 {
1232 int i;
1233
1234 /* This is JPEG error handling part */
1235 if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1236 zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1237 return;
1238 }
1239
1240 if ((stat & 1) == 0 &&
1241 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1242 zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1243 /* No free buffers... */
1244 zoran_reap_stat_com(zr);
1245 zoran_feed_stat_com(zr);
1246 wake_up_interruptible(&zr->jpg_capq);
1247 zr->JPEG_missed = 0;
1248 return;
1249 }
1250
1251 if (zr->JPEG_error == 1) {
1252 zoran_restart(zr);
1253 return;
1254 }
1255
1256 /*
1257 * First entry: error just happened during normal operation
1258 *
1259 * In BUZ_MODE_MOTION_COMPRESS:
1260 *
1261 * Possible glitch in TV signal. In this case we should
1262 * stop the codec and wait for good quality signal before
1263 * restarting it to avoid further problems
1264 *
1265 * In BUZ_MODE_MOTION_DECOMPRESS:
1266 *
1267 * Bad JPEG frame: we have to mark it as processed (codec crashed
1268 * and was not able to do it itself), and to remove it from queue.
1269 */
1270 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1271 udelay(1);
1272 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1273 btwrite(0, ZR36057_JPC);
1274 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1275 jpeg_codec_reset(zr);
1276 jpeg_codec_sleep(zr, 1);
1277 zr->JPEG_error = 1;
1278 zr->num_errors++;
1279
1280 /* Report error */
1281 if (zr36067_debug > 1 && zr->num_errors <= 8) {
1282 long frame;
1283 int j;
1284
1285 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1286 printk(KERN_ERR
1287 "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1288 ZR_DEVNAME(zr), stat, zr->last_isr,
1289 zr->jpg_que_tail, zr->jpg_dma_tail,
1290 zr->jpg_dma_head, zr->jpg_que_head,
1291 zr->jpg_seq_num, frame);
1292 printk(KERN_INFO "stat_com frames:");
1293 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1294 for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1295 if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1296 printk(KERN_CONT "% d->%d", j, i);
1297 }
1298 }
1299 printk(KERN_CONT "\n");
1300 }
1301 /* Find an entry in stat_com and rotate contents */
1302 if (zr->jpg_settings.TmpDcm == 1)
1303 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1304 else
1305 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1306 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1307 /* Mimic zr36067 operation */
1308 zr->stat_com[i] |= cpu_to_le32(1);
1309 if (zr->jpg_settings.TmpDcm != 1)
1310 zr->stat_com[i + 1] |= cpu_to_le32(1);
1311 /* Refill */
1312 zoran_reap_stat_com(zr);
1313 zoran_feed_stat_com(zr);
1314 wake_up_interruptible(&zr->jpg_capq);
1315 /* Find an entry in stat_com again after refill */
1316 if (zr->jpg_settings.TmpDcm == 1)
1317 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1318 else
1319 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1320 }
1321 if (i) {
1322 /* Rotate stat_comm entries to make current entry first */
1323 int j;
1324 __le32 bus_addr[BUZ_NUM_STAT_COM];
1325
1326 /* Here we are copying the stat_com array, which
1327 * is already in little endian format, so
1328 * no endian conversions here
1329 */
1330 memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1331
1332 for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1333 zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
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 zoran_restart(zr);
1341 }
1342
1343 irqreturn_t
zoran_irq(int irq,void * dev_id)1344 zoran_irq (int irq,
1345 void *dev_id)
1346 {
1347 u32 stat, astat;
1348 int count;
1349 struct zoran *zr;
1350 unsigned long flags;
1351
1352 zr = dev_id;
1353 count = 0;
1354
1355 if (zr->testing) {
1356 /* Testing interrupts */
1357 spin_lock_irqsave(&zr->spinlock, flags);
1358 while ((stat = count_reset_interrupt(zr))) {
1359 if (count++ > 100) {
1360 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1361 dprintk(1,
1362 KERN_ERR
1363 "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1364 ZR_DEVNAME(zr), stat);
1365 wake_up_interruptible(&zr->test_q);
1366 }
1367 }
1368 zr->last_isr = stat;
1369 spin_unlock_irqrestore(&zr->spinlock, flags);
1370 return IRQ_HANDLED;
1371 }
1372
1373 spin_lock_irqsave(&zr->spinlock, flags);
1374 while (1) {
1375 /* get/clear interrupt status bits */
1376 stat = count_reset_interrupt(zr);
1377 astat = stat & IRQ_MASK;
1378 if (!astat) {
1379 break;
1380 }
1381 dprintk(4,
1382 KERN_DEBUG
1383 "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1384 astat, btread(ZR36057_ICR));
1385 if (astat & zr->card.vsync_int) { // SW
1386
1387 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1388 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1389 /* count missed interrupts */
1390 zr->JPEG_missed++;
1391 }
1392 //post_office_read(zr,1,0);
1393 /* Interrupts may still happen when
1394 * zr->v4l_memgrab_active is switched off.
1395 * We simply ignore them */
1396
1397 if (zr->v4l_memgrab_active) {
1398 /* A lot more checks should be here ... */
1399 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1400 dprintk(1,
1401 KERN_WARNING
1402 "%s: BuzIRQ with SnapShot off ???\n",
1403 ZR_DEVNAME(zr));
1404
1405 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1406 /* There is a grab on a frame going on, check if it has finished */
1407 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1408 /* it is finished, notify the user */
1409
1410 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1411 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1412 do_gettimeofday(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1413 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1414 zr->v4l_pend_tail++;
1415 }
1416 }
1417
1418 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1419 wake_up_interruptible(&zr->v4l_capq);
1420
1421 /* Check if there is another grab queued */
1422
1423 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1424 zr->v4l_pend_tail != zr->v4l_pend_head) {
1425 int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1426 u32 reg;
1427
1428 zr->v4l_grab_frame = frame;
1429
1430 /* Set zr36057 video front end and enable video */
1431
1432 /* Buffer address */
1433
1434 reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1435 btwrite(reg, ZR36057_VDTR);
1436 if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1437 reg += zr->v4l_settings.bytesperline;
1438 btwrite(reg, ZR36057_VDBR);
1439
1440 /* video stride, status, and frame grab register */
1441 reg = 0;
1442 if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1443 reg += zr->v4l_settings.bytesperline;
1444 reg = (reg << ZR36057_VSSFGR_DispStride);
1445 reg |= ZR36057_VSSFGR_VidOvf;
1446 reg |= ZR36057_VSSFGR_SnapShot;
1447 reg |= ZR36057_VSSFGR_FrameGrab;
1448 btwrite(reg, ZR36057_VSSFGR);
1449
1450 btor(ZR36057_VDCR_VidEn,
1451 ZR36057_VDCR);
1452 }
1453 }
1454
1455 /* even if we don't grab, we do want to increment
1456 * the sequence counter to see lost frames */
1457 zr->v4l_grab_seq++;
1458 }
1459 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1460 if (astat & ZR36057_ISR_CodRepIRQ) {
1461 zr->intr_counter_CodRepIRQ++;
1462 IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1463 ZR_DEVNAME(zr)));
1464 btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1465 }
1466 #endif /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1467
1468 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1469 if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1470 (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1471 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1472 if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1473 char sv[BUZ_NUM_STAT_COM + 1];
1474 int i;
1475
1476 printk(KERN_INFO
1477 "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1478 ZR_DEVNAME(zr), stat,
1479 zr->jpg_settings.odd_even,
1480 zr->jpg_settings.field_per_buff,
1481 zr->JPEG_missed);
1482
1483 for (i = 0; i < BUZ_NUM_STAT_COM; i++)
1484 sv[i] = le32_to_cpu(zr->stat_com[i]) & 1 ? '1' : '0';
1485 sv[BUZ_NUM_STAT_COM] = 0;
1486 printk(KERN_INFO
1487 "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1488 ZR_DEVNAME(zr), sv,
1489 zr->jpg_que_tail,
1490 zr->jpg_dma_tail,
1491 zr->jpg_dma_head,
1492 zr->jpg_que_head);
1493 } else {
1494 /* Get statistics */
1495 if (zr->JPEG_missed > zr->JPEG_max_missed)
1496 zr->JPEG_max_missed = zr->JPEG_missed;
1497 if (zr->JPEG_missed < zr->JPEG_min_missed)
1498 zr->JPEG_min_missed = zr->JPEG_missed;
1499 }
1500
1501 if (zr36067_debug > 2 && zr->frame_num < 6) {
1502 int i;
1503
1504 printk(KERN_INFO "%s: seq=%ld stat_com:",
1505 ZR_DEVNAME(zr), zr->jpg_seq_num);
1506 for (i = 0; i < 4; i++) {
1507 printk(KERN_CONT " %08x",
1508 le32_to_cpu(zr->stat_com[i]));
1509 }
1510 printk(KERN_CONT "\n");
1511 }
1512 zr->frame_num++;
1513 zr->JPEG_missed = 0;
1514 zr->JPEG_error = 0;
1515 zoran_reap_stat_com(zr);
1516 zoran_feed_stat_com(zr);
1517 wake_up_interruptible(&zr->jpg_capq);
1518 }
1519 #endif /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1520
1521 /* DATERR, too many fields missed, error processing */
1522 if ((astat & zr->card.jpeg_int) ||
1523 zr->JPEG_missed > 25 ||
1524 zr->JPEG_error == 1 ||
1525 ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1526 (zr->frame_num && (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1527 error_handler(zr, astat, stat);
1528 }
1529
1530 count++;
1531 if (count > 10) {
1532 dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1533 ZR_DEVNAME(zr), count);
1534 if (count > 20) {
1535 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1536 dprintk(2,
1537 KERN_ERR
1538 "%s: IRQ lockup, cleared int mask\n",
1539 ZR_DEVNAME(zr));
1540 break;
1541 }
1542 }
1543 zr->last_isr = stat;
1544 }
1545 spin_unlock_irqrestore(&zr->spinlock, flags);
1546
1547 return IRQ_HANDLED;
1548 }
1549
1550 void
zoran_set_pci_master(struct zoran * zr,int set_master)1551 zoran_set_pci_master (struct zoran *zr,
1552 int set_master)
1553 {
1554 if (set_master) {
1555 pci_set_master(zr->pci_dev);
1556 } else {
1557 u16 command;
1558
1559 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1560 command &= ~PCI_COMMAND_MASTER;
1561 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1562 }
1563 }
1564
1565 void
zoran_init_hardware(struct zoran * zr)1566 zoran_init_hardware (struct zoran *zr)
1567 {
1568 /* Enable bus-mastering */
1569 zoran_set_pci_master(zr, 1);
1570
1571 /* Initialize the board */
1572 if (zr->card.init) {
1573 zr->card.init(zr);
1574 }
1575
1576 decoder_call(zr, core, init, 0);
1577 decoder_call(zr, core, s_std, zr->norm);
1578 decoder_call(zr, video, s_routing,
1579 zr->card.input[zr->input].muxsel, 0, 0);
1580
1581 encoder_call(zr, core, init, 0);
1582 encoder_call(zr, video, s_std_output, zr->norm);
1583 encoder_call(zr, video, s_routing, 0, 0, 0);
1584
1585 /* toggle JPEG codec sleep to sync PLL */
1586 jpeg_codec_sleep(zr, 1);
1587 jpeg_codec_sleep(zr, 0);
1588
1589 /* set individual interrupt enables (without GIRQ1)
1590 * but don't global enable until zoran_open() */
1591
1592 //btwrite(IRQ_MASK & ~ZR36057_ISR_GIRQ1, ZR36057_ICR); // SW
1593 // It looks like using only JPEGRepIRQEn is not always reliable,
1594 // may be when JPEG codec crashes it won't generate IRQ? So,
1595 /*CP*/ // btwrite(IRQ_MASK, ZR36057_ICR); // Enable Vsync interrupts too. SM WHY ? LP
1596 zr36057_init_vfe(zr);
1597
1598 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1599
1600 btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1601 }
1602
1603 void
zr36057_restart(struct zoran * zr)1604 zr36057_restart (struct zoran *zr)
1605 {
1606 btwrite(0, ZR36057_SPGPPCR);
1607 mdelay(1);
1608 btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1609 mdelay(1);
1610
1611 /* assert P_Reset */
1612 btwrite(0, ZR36057_JPC);
1613 /* set up GPIO direction - all output */
1614 btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1615
1616 /* set up GPIO pins and guest bus timing */
1617 btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1618 }
1619
1620 /*
1621 * initialize video front end
1622 */
1623
1624 static void
zr36057_init_vfe(struct zoran * zr)1625 zr36057_init_vfe (struct zoran *zr)
1626 {
1627 u32 reg;
1628
1629 reg = btread(ZR36057_VFESPFR);
1630 reg |= ZR36057_VFESPFR_LittleEndian;
1631 reg &= ~ZR36057_VFESPFR_VCLKPol;
1632 reg |= ZR36057_VFESPFR_ExtFl;
1633 reg |= ZR36057_VFESPFR_TopField;
1634 btwrite(reg, ZR36057_VFESPFR);
1635 reg = btread(ZR36057_VDCR);
1636 if (pci_pci_problems & PCIPCI_TRITON)
1637 // || zr->revision < 1) // Revision 1 has also Triton support
1638 reg &= ~ZR36057_VDCR_Triton;
1639 else
1640 reg |= ZR36057_VDCR_Triton;
1641 btwrite(reg, ZR36057_VDCR);
1642 }
1643