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
26 #include <linux/types.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/vmalloc.h>
30 #include <linux/ktime.h>
31 #include <linux/sched/signal.h>
32
33 #include <linux/interrupt.h>
34 #include <linux/proc_fs.h>
35 #include <linux/i2c.h>
36 #include <linux/i2c-algo-bit.h>
37 #include <linux/videodev2.h>
38 #include <media/v4l2-common.h>
39 #include <linux/spinlock.h>
40 #include <linux/sem.h>
41
42 #include <linux/pci.h>
43 #include <linux/delay.h>
44 #include <linux/wait.h>
45
46 #include <asm/byteorder.h>
47 #include <asm/io.h>
48
49 #include "videocodec.h"
50 #include "zoran.h"
51 #include "zoran_device.h"
52 #include "zoran_card.h"
53
54 #define IRQ_MASK ( ZR36057_ISR_GIRQ0 | \
55 ZR36057_ISR_GIRQ1 | \
56 ZR36057_ISR_JPEGRepIRQ )
57
58 static bool lml33dpath; /* default = 0
59 * 1 will use digital path in capture
60 * mode instead of analog. It can be
61 * used for picture adjustments using
62 * tool like xawtv while watching image
63 * on TV monitor connected to the output.
64 * However, due to absence of 75 Ohm
65 * load on Bt819 input, there will be
66 * some image imperfections */
67
68 module_param(lml33dpath, bool, 0644);
69 MODULE_PARM_DESC(lml33dpath,
70 "Use digital path capture mode (on LML33 cards)");
71
72 static void
73 zr36057_init_vfe (struct zoran *zr);
74
75 /*
76 * General Purpose I/O and Guest bus access
77 */
78
79 /*
80 * This is a bit tricky. When a board lacks a GPIO function, the corresponding
81 * GPIO bit number in the card_info structure is set to 0.
82 */
83
84 void
GPIO(struct zoran * zr,int bit,unsigned int value)85 GPIO (struct zoran *zr,
86 int bit,
87 unsigned int value)
88 {
89 u32 reg;
90 u32 mask;
91
92 /* Make sure the bit number is legal
93 * A bit number of -1 (lacking) gives a mask of 0,
94 * making it harmless */
95 mask = (1 << (24 + bit)) & 0xff000000;
96 reg = btread(ZR36057_GPPGCR1) & ~mask;
97 if (value) {
98 reg |= mask;
99 }
100 btwrite(reg, ZR36057_GPPGCR1);
101 udelay(1);
102 }
103
104 /*
105 * Wait til post office is no longer busy
106 */
107
108 int
post_office_wait(struct zoran * zr)109 post_office_wait (struct zoran *zr)
110 {
111 u32 por;
112
113 // while (((por = btread(ZR36057_POR)) & (ZR36057_POR_POPen | ZR36057_POR_POTime)) == ZR36057_POR_POPen) {
114 while ((por = btread(ZR36057_POR)) & ZR36057_POR_POPen) {
115 /* wait for something to happen */
116 }
117 if ((por & ZR36057_POR_POTime) && !zr->card.gws_not_connected) {
118 /* In LML33/BUZ \GWS line is not connected, so it has always timeout set */
119 dprintk(1, KERN_INFO "%s: pop timeout %08x\n", ZR_DEVNAME(zr),
120 por);
121 return -1;
122 }
123
124 return 0;
125 }
126
127 int
post_office_write(struct zoran * zr,unsigned int guest,unsigned int reg,unsigned int value)128 post_office_write (struct zoran *zr,
129 unsigned int guest,
130 unsigned int reg,
131 unsigned int value)
132 {
133 u32 por;
134
135 por =
136 ZR36057_POR_PODir | ZR36057_POR_POTime | ((guest & 7) << 20) |
137 ((reg & 7) << 16) | (value & 0xFF);
138 btwrite(por, ZR36057_POR);
139
140 return post_office_wait(zr);
141 }
142
143 int
post_office_read(struct zoran * zr,unsigned int guest,unsigned int reg)144 post_office_read (struct zoran *zr,
145 unsigned int guest,
146 unsigned int reg)
147 {
148 u32 por;
149
150 por = ZR36057_POR_POTime | ((guest & 7) << 20) | ((reg & 7) << 16);
151 btwrite(por, ZR36057_POR);
152 if (post_office_wait(zr) < 0) {
153 return -1;
154 }
155
156 return btread(ZR36057_POR) & 0xFF;
157 }
158
159 /*
160 * detect guests
161 */
162
163 static void
dump_guests(struct zoran * zr)164 dump_guests (struct zoran *zr)
165 {
166 if (zr36067_debug > 2) {
167 int i, guest[8];
168
169 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
170 guest[i] = post_office_read(zr, i, 0);
171 }
172
173 printk(KERN_INFO "%s: Guests: %*ph\n",
174 ZR_DEVNAME(zr), 8, guest);
175 }
176 }
177
178 void
detect_guest_activity(struct zoran * zr)179 detect_guest_activity (struct zoran *zr)
180 {
181 int timeout, i, j, res, guest[8], guest0[8], change[8][3];
182 ktime_t t0, t1;
183
184 dump_guests(zr);
185 printk(KERN_INFO "%s: Detecting guests activity, please wait...\n",
186 ZR_DEVNAME(zr));
187 for (i = 1; i < 8; i++) { // Don't read jpeg codec here
188 guest0[i] = guest[i] = post_office_read(zr, i, 0);
189 }
190
191 timeout = 0;
192 j = 0;
193 t0 = ktime_get();
194 while (timeout < 10000) {
195 udelay(10);
196 timeout++;
197 for (i = 1; (i < 8) && (j < 8); i++) {
198 res = post_office_read(zr, i, 0);
199 if (res != guest[i]) {
200 t1 = ktime_get();
201 change[j][0] = ktime_to_us(ktime_sub(t1, t0));
202 t0 = t1;
203 change[j][1] = i;
204 change[j][2] = res;
205 j++;
206 guest[i] = res;
207 }
208 }
209 if (j >= 8)
210 break;
211 }
212
213 printk(KERN_INFO "%s: Guests: %*ph\n", ZR_DEVNAME(zr), 8, guest0);
214
215 if (j == 0) {
216 printk(KERN_INFO "%s: No activity detected.\n", ZR_DEVNAME(zr));
217 return;
218 }
219 for (i = 0; i < j; i++) {
220 printk(KERN_INFO "%s: %6d: %d => 0x%02x\n", ZR_DEVNAME(zr),
221 change[i][0], change[i][1], change[i][2]);
222 }
223 }
224
225 /*
226 * JPEG Codec access
227 */
228
229 void
jpeg_codec_sleep(struct zoran * zr,int sleep)230 jpeg_codec_sleep (struct zoran *zr,
231 int sleep)
232 {
233 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_SLEEP], !sleep);
234 if (!sleep) {
235 dprintk(3,
236 KERN_DEBUG
237 "%s: jpeg_codec_sleep() - wake GPIO=0x%08x\n",
238 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
239 udelay(500);
240 } else {
241 dprintk(3,
242 KERN_DEBUG
243 "%s: jpeg_codec_sleep() - sleep GPIO=0x%08x\n",
244 ZR_DEVNAME(zr), btread(ZR36057_GPPGCR1));
245 udelay(2);
246 }
247 }
248
249 int
jpeg_codec_reset(struct zoran * zr)250 jpeg_codec_reset (struct zoran *zr)
251 {
252 /* Take the codec out of sleep */
253 jpeg_codec_sleep(zr, 0);
254
255 if (zr->card.gpcs[GPCS_JPEG_RESET] != 0xff) {
256 post_office_write(zr, zr->card.gpcs[GPCS_JPEG_RESET], 0,
257 0);
258 udelay(2);
259 } else {
260 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 0);
261 udelay(2);
262 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_RESET], 1);
263 udelay(2);
264 }
265
266 return 0;
267 }
268
269 /*
270 * Set the registers for the size we have specified. Don't bother
271 * trying to understand this without the ZR36057 manual in front of
272 * you [AC].
273 *
274 * PS: The manual is free for download in .pdf format from
275 * www.zoran.com - nicely done those folks.
276 */
277
278 static void
zr36057_adjust_vfe(struct zoran * zr,enum zoran_codec_mode mode)279 zr36057_adjust_vfe (struct zoran *zr,
280 enum zoran_codec_mode mode)
281 {
282 u32 reg;
283
284 switch (mode) {
285 case BUZ_MODE_MOTION_DECOMPRESS:
286 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
287 reg = btread(ZR36057_VFEHCR);
288 if ((reg & (1 << 10)) && zr->card.type != LML33R10) {
289 reg += ((1 << 10) | 1);
290 }
291 btwrite(reg, ZR36057_VFEHCR);
292 break;
293 case BUZ_MODE_MOTION_COMPRESS:
294 case BUZ_MODE_IDLE:
295 default:
296 if ((zr->norm & V4L2_STD_NTSC) ||
297 (zr->card.type == LML33R10 &&
298 (zr->norm & V4L2_STD_PAL)))
299 btand(~ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
300 else
301 btor(ZR36057_VFESPFR_ExtFl, ZR36057_VFESPFR);
302 reg = btread(ZR36057_VFEHCR);
303 if (!(reg & (1 << 10)) && zr->card.type != LML33R10) {
304 reg -= ((1 << 10) | 1);
305 }
306 btwrite(reg, ZR36057_VFEHCR);
307 break;
308 }
309 }
310
311 /*
312 * set geometry
313 */
314
315 static void
zr36057_set_vfe(struct zoran * zr,int video_width,int video_height,const struct zoran_format * format)316 zr36057_set_vfe (struct zoran *zr,
317 int video_width,
318 int video_height,
319 const struct zoran_format *format)
320 {
321 struct tvnorm *tvn;
322 unsigned HStart, HEnd, VStart, VEnd;
323 unsigned DispMode;
324 unsigned VidWinWid, VidWinHt;
325 unsigned hcrop1, hcrop2, vcrop1, vcrop2;
326 unsigned Wa, We, Ha, He;
327 unsigned X, Y, HorDcm, VerDcm;
328 u32 reg;
329 unsigned mask_line_size;
330
331 tvn = zr->timing;
332
333 Wa = tvn->Wa;
334 Ha = tvn->Ha;
335
336 dprintk(2, KERN_INFO "%s: set_vfe() - width = %d, height = %d\n",
337 ZR_DEVNAME(zr), video_width, video_height);
338
339 if (video_width < BUZ_MIN_WIDTH ||
340 video_height < BUZ_MIN_HEIGHT ||
341 video_width > Wa || video_height > Ha) {
342 dprintk(1, KERN_ERR "%s: set_vfe: w=%d h=%d not valid\n",
343 ZR_DEVNAME(zr), video_width, video_height);
344 return;
345 }
346
347 /**** zr36057 ****/
348
349 /* horizontal */
350 VidWinWid = video_width;
351 X = DIV_ROUND_UP(VidWinWid * 64, tvn->Wa);
352 We = (VidWinWid * 64) / X;
353 HorDcm = 64 - X;
354 hcrop1 = 2 * ((tvn->Wa - We) / 4);
355 hcrop2 = tvn->Wa - We - hcrop1;
356 HStart = tvn->HStart ? tvn->HStart : 1;
357 /* (Ronald) Original comment:
358 * "| 1 Doesn't have any effect, tested on both a DC10 and a DC10+"
359 * this is false. It inverses chroma values on the LML33R10 (so Cr
360 * suddenly is shown as Cb and reverse, really cool effect if you
361 * want to see blue faces, not useful otherwise). So don't use |1.
362 * However, the DC10 has '0' as HStart, but does need |1, so we
363 * use a dirty check...
364 */
365 HEnd = HStart + tvn->Wa - 1;
366 HStart += hcrop1;
367 HEnd -= hcrop2;
368 reg = ((HStart & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HStart)
369 | ((HEnd & ZR36057_VFEHCR_Hmask) << ZR36057_VFEHCR_HEnd);
370 if (zr->card.vfe_pol.hsync_pol)
371 reg |= ZR36057_VFEHCR_HSPol;
372 btwrite(reg, ZR36057_VFEHCR);
373
374 /* Vertical */
375 DispMode = !(video_height > BUZ_MAX_HEIGHT / 2);
376 VidWinHt = DispMode ? video_height : video_height / 2;
377 Y = DIV_ROUND_UP(VidWinHt * 64 * 2, tvn->Ha);
378 He = (VidWinHt * 64) / Y;
379 VerDcm = 64 - Y;
380 vcrop1 = (tvn->Ha / 2 - He) / 2;
381 vcrop2 = tvn->Ha / 2 - He - vcrop1;
382 VStart = tvn->VStart;
383 VEnd = VStart + tvn->Ha / 2; // - 1; FIXME SnapShot times out with -1 in 768*576 on the DC10 - LP
384 VStart += vcrop1;
385 VEnd -= vcrop2;
386 reg = ((VStart & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VStart)
387 | ((VEnd & ZR36057_VFEVCR_Vmask) << ZR36057_VFEVCR_VEnd);
388 if (zr->card.vfe_pol.vsync_pol)
389 reg |= ZR36057_VFEVCR_VSPol;
390 btwrite(reg, ZR36057_VFEVCR);
391
392 /* scaler and pixel format */
393 reg = 0;
394 reg |= (HorDcm << ZR36057_VFESPFR_HorDcm);
395 reg |= (VerDcm << ZR36057_VFESPFR_VerDcm);
396 reg |= (DispMode << ZR36057_VFESPFR_DispMode);
397 /* RJ: I don't know, why the following has to be the opposite
398 * of the corresponding ZR36060 setting, but only this way
399 * we get the correct colors when uncompressing to the screen */
400 //reg |= ZR36057_VFESPFR_VCLKPol; /**/
401 /* RJ: Don't know if that is needed for NTSC also */
402 if (!(zr->norm & V4L2_STD_NTSC))
403 reg |= ZR36057_VFESPFR_ExtFl; // NEEDED!!!!!!! Wolfgang
404 reg |= ZR36057_VFESPFR_TopField;
405 if (HorDcm >= 48) {
406 reg |= 3 << ZR36057_VFESPFR_HFilter; /* 5 tap filter */
407 } else if (HorDcm >= 32) {
408 reg |= 2 << ZR36057_VFESPFR_HFilter; /* 4 tap filter */
409 } else if (HorDcm >= 16) {
410 reg |= 1 << ZR36057_VFESPFR_HFilter; /* 3 tap filter */
411 }
412 reg |= format->vfespfr;
413 btwrite(reg, ZR36057_VFESPFR);
414
415 /* display configuration */
416 reg = (16 << ZR36057_VDCR_MinPix)
417 | (VidWinHt << ZR36057_VDCR_VidWinHt)
418 | (VidWinWid << ZR36057_VDCR_VidWinWid);
419 if (pci_pci_problems & PCIPCI_TRITON)
420 // || zr->revision < 1) // Revision 1 has also Triton support
421 reg &= ~ZR36057_VDCR_Triton;
422 else
423 reg |= ZR36057_VDCR_Triton;
424 btwrite(reg, ZR36057_VDCR);
425
426 /* (Ronald) don't write this if overlay_mask = NULL */
427 if (zr->overlay_mask) {
428 /* Write overlay clipping mask data, but don't enable overlay clipping */
429 /* RJ: since this makes only sense on the screen, we use
430 * zr->overlay_settings.width instead of video_width */
431
432 mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
433 reg = virt_to_bus(zr->overlay_mask);
434 btwrite(reg, ZR36057_MMTR);
435 reg = virt_to_bus(zr->overlay_mask + mask_line_size);
436 btwrite(reg, ZR36057_MMBR);
437 reg =
438 mask_line_size - (zr->overlay_settings.width +
439 31) / 32;
440 if (DispMode == 0)
441 reg += mask_line_size;
442 reg <<= ZR36057_OCR_MaskStride;
443 btwrite(reg, ZR36057_OCR);
444 }
445
446 zr36057_adjust_vfe(zr, zr->codec_mode);
447 }
448
449 /*
450 * Switch overlay on or off
451 */
452
453 void
zr36057_overlay(struct zoran * zr,int on)454 zr36057_overlay (struct zoran *zr,
455 int on)
456 {
457 u32 reg;
458
459 if (on) {
460 /* do the necessary settings ... */
461 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR); /* switch it off first */
462
463 zr36057_set_vfe(zr,
464 zr->overlay_settings.width,
465 zr->overlay_settings.height,
466 zr->overlay_settings.format);
467
468 /* Start and length of each line MUST be 4-byte aligned.
469 * This should be already checked before the call to this routine.
470 * All error messages are internal driver checking only! */
471
472 /* video display top and bottom registers */
473 reg = (long) zr->vbuf_base +
474 zr->overlay_settings.x *
475 ((zr->overlay_settings.format->depth + 7) / 8) +
476 zr->overlay_settings.y *
477 zr->vbuf_bytesperline;
478 btwrite(reg, ZR36057_VDTR);
479 if (reg & 3)
480 dprintk(1,
481 KERN_ERR
482 "%s: zr36057_overlay() - video_address not aligned\n",
483 ZR_DEVNAME(zr));
484 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
485 reg += zr->vbuf_bytesperline;
486 btwrite(reg, ZR36057_VDBR);
487
488 /* video stride, status, and frame grab register */
489 reg = zr->vbuf_bytesperline -
490 zr->overlay_settings.width *
491 ((zr->overlay_settings.format->depth + 7) / 8);
492 if (zr->overlay_settings.height > BUZ_MAX_HEIGHT / 2)
493 reg += zr->vbuf_bytesperline;
494 if (reg & 3)
495 dprintk(1,
496 KERN_ERR
497 "%s: zr36057_overlay() - video_stride not aligned\n",
498 ZR_DEVNAME(zr));
499 reg = (reg << ZR36057_VSSFGR_DispStride);
500 reg |= ZR36057_VSSFGR_VidOvf; /* clear overflow status */
501 btwrite(reg, ZR36057_VSSFGR);
502
503 /* Set overlay clipping */
504 if (zr->overlay_settings.clipcount > 0)
505 btor(ZR36057_OCR_OvlEnable, ZR36057_OCR);
506
507 /* ... and switch it on */
508 btor(ZR36057_VDCR_VidEn, ZR36057_VDCR);
509 } else {
510 /* Switch it off */
511 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
512 }
513 }
514
515 /*
516 * The overlay mask has one bit for each pixel on a scan line,
517 * and the maximum window size is BUZ_MAX_WIDTH * BUZ_MAX_HEIGHT pixels.
518 */
519
write_overlay_mask(struct zoran_fh * fh,struct v4l2_clip * vp,int count)520 void write_overlay_mask(struct zoran_fh *fh, struct v4l2_clip *vp, int count)
521 {
522 struct zoran *zr = fh->zr;
523 unsigned mask_line_size = (BUZ_MAX_WIDTH + 31) / 32;
524 u32 *mask;
525 int x, y, width, height;
526 unsigned i, j, k;
527
528 /* fill mask with one bits */
529 memset(fh->overlay_mask, ~0, mask_line_size * 4 * BUZ_MAX_HEIGHT);
530
531 for (i = 0; i < count; ++i) {
532 /* pick up local copy of clip */
533 x = vp[i].c.left;
534 y = vp[i].c.top;
535 width = vp[i].c.width;
536 height = vp[i].c.height;
537
538 /* trim clips that extend beyond the window */
539 if (x < 0) {
540 width += x;
541 x = 0;
542 }
543 if (y < 0) {
544 height += y;
545 y = 0;
546 }
547 if (x + width > fh->overlay_settings.width) {
548 width = fh->overlay_settings.width - x;
549 }
550 if (y + height > fh->overlay_settings.height) {
551 height = fh->overlay_settings.height - y;
552 }
553
554 /* ignore degenerate clips */
555 if (height <= 0) {
556 continue;
557 }
558 if (width <= 0) {
559 continue;
560 }
561
562 /* apply clip for each scan line */
563 for (j = 0; j < height; ++j) {
564 /* reset bit for each pixel */
565 /* this can be optimized later if need be */
566 mask = fh->overlay_mask + (y + j) * mask_line_size;
567 for (k = 0; k < width; ++k) {
568 mask[(x + k) / 32] &=
569 ~((u32) 1 << (x + k) % 32);
570 }
571 }
572 }
573 }
574
575 /* Enable/Disable uncompressed memory grabbing of the 36057 */
576
577 void
zr36057_set_memgrab(struct zoran * zr,int mode)578 zr36057_set_memgrab (struct zoran *zr,
579 int mode)
580 {
581 if (mode) {
582 /* We only check SnapShot and not FrameGrab here. SnapShot==1
583 * means a capture is already in progress, but FrameGrab==1
584 * doesn't necessary mean that. It's more correct to say a 1
585 * to 0 transition indicates a capture completed. If a
586 * capture is pending when capturing is tuned off, FrameGrab
587 * will be stuck at 1 until capturing is turned back on.
588 */
589 if (btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot)
590 dprintk(1,
591 KERN_WARNING
592 "%s: zr36057_set_memgrab(1) with SnapShot on!?\n",
593 ZR_DEVNAME(zr));
594
595 /* switch on VSync interrupts */
596 btwrite(IRQ_MASK, ZR36057_ISR); // Clear Interrupts
597 btor(zr->card.vsync_int, ZR36057_ICR); // SW
598
599 /* enable SnapShot */
600 btor(ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
601
602 /* Set zr36057 video front end and enable video */
603 zr36057_set_vfe(zr, zr->v4l_settings.width,
604 zr->v4l_settings.height,
605 zr->v4l_settings.format);
606
607 zr->v4l_memgrab_active = 1;
608 } else {
609 /* switch off VSync interrupts */
610 btand(~zr->card.vsync_int, ZR36057_ICR); // SW
611
612 zr->v4l_memgrab_active = 0;
613 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
614
615 /* reenable grabbing to screen if it was running */
616 if (zr->v4l_overlay_active) {
617 zr36057_overlay(zr, 1);
618 } else {
619 btand(~ZR36057_VDCR_VidEn, ZR36057_VDCR);
620 btand(~ZR36057_VSSFGR_SnapShot, ZR36057_VSSFGR);
621 }
622 }
623 }
624
625 int
wait_grab_pending(struct zoran * zr)626 wait_grab_pending (struct zoran *zr)
627 {
628 unsigned long flags;
629
630 /* wait until all pending grabs are finished */
631
632 if (!zr->v4l_memgrab_active)
633 return 0;
634
635 wait_event_interruptible(zr->v4l_capq,
636 (zr->v4l_pend_tail == zr->v4l_pend_head));
637 if (signal_pending(current))
638 return -ERESTARTSYS;
639
640 spin_lock_irqsave(&zr->spinlock, flags);
641 zr36057_set_memgrab(zr, 0);
642 spin_unlock_irqrestore(&zr->spinlock, flags);
643
644 return 0;
645 }
646
647 /*****************************************************************************
648 * *
649 * Set up the Buz-specific MJPEG part *
650 * *
651 *****************************************************************************/
652
653 static inline void
set_frame(struct zoran * zr,int val)654 set_frame (struct zoran *zr,
655 int val)
656 {
657 GPIO(zr, zr->card.gpio[ZR_GPIO_JPEG_FRAME], val);
658 }
659
660 static void
set_videobus_dir(struct zoran * zr,int val)661 set_videobus_dir (struct zoran *zr,
662 int val)
663 {
664 switch (zr->card.type) {
665 case LML33:
666 case LML33R10:
667 if (!lml33dpath)
668 GPIO(zr, 5, val);
669 else
670 GPIO(zr, 5, 1);
671 break;
672 default:
673 GPIO(zr, zr->card.gpio[ZR_GPIO_VID_DIR],
674 zr->card.gpio_pol[ZR_GPIO_VID_DIR] ? !val : val);
675 break;
676 }
677 }
678
679 static void
init_jpeg_queue(struct zoran * zr)680 init_jpeg_queue (struct zoran *zr)
681 {
682 int i;
683
684 /* re-initialize DMA ring stuff */
685 zr->jpg_que_head = 0;
686 zr->jpg_dma_head = 0;
687 zr->jpg_dma_tail = 0;
688 zr->jpg_que_tail = 0;
689 zr->jpg_seq_num = 0;
690 zr->JPEG_error = 0;
691 zr->num_errors = 0;
692 zr->jpg_err_seq = 0;
693 zr->jpg_err_shift = 0;
694 zr->jpg_queued_num = 0;
695 for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
696 zr->jpg_buffers.buffer[i].state = BUZ_STATE_USER; /* nothing going on */
697 }
698 for (i = 0; i < BUZ_NUM_STAT_COM; i++) {
699 zr->stat_com[i] = cpu_to_le32(1); /* mark as unavailable to zr36057 */
700 }
701 }
702
703 static void
zr36057_set_jpg(struct zoran * zr,enum zoran_codec_mode mode)704 zr36057_set_jpg (struct zoran *zr,
705 enum zoran_codec_mode mode)
706 {
707 struct tvnorm *tvn;
708 u32 reg;
709
710 tvn = zr->timing;
711
712 /* assert P_Reset, disable code transfer, deassert Active */
713 btwrite(0, ZR36057_JPC);
714
715 /* MJPEG compression mode */
716 switch (mode) {
717
718 case BUZ_MODE_MOTION_COMPRESS:
719 default:
720 reg = ZR36057_JMC_MJPGCmpMode;
721 break;
722
723 case BUZ_MODE_MOTION_DECOMPRESS:
724 reg = ZR36057_JMC_MJPGExpMode;
725 reg |= ZR36057_JMC_SyncMstr;
726 /* RJ: The following is experimental - improves the output to screen */
727 //if(zr->jpg_settings.VFIFO_FB) reg |= ZR36057_JMC_VFIFO_FB; // No, it doesn't. SM
728 break;
729
730 case BUZ_MODE_STILL_COMPRESS:
731 reg = ZR36057_JMC_JPGCmpMode;
732 break;
733
734 case BUZ_MODE_STILL_DECOMPRESS:
735 reg = ZR36057_JMC_JPGExpMode;
736 break;
737
738 }
739 reg |= ZR36057_JMC_JPG;
740 if (zr->jpg_settings.field_per_buff == 1)
741 reg |= ZR36057_JMC_Fld_per_buff;
742 btwrite(reg, ZR36057_JMC);
743
744 /* vertical */
745 btor(ZR36057_VFEVCR_VSPol, ZR36057_VFEVCR);
746 reg = (6 << ZR36057_VSP_VsyncSize) |
747 (tvn->Ht << ZR36057_VSP_FrmTot);
748 btwrite(reg, ZR36057_VSP);
749 reg = ((zr->jpg_settings.img_y + tvn->VStart) << ZR36057_FVAP_NAY) |
750 (zr->jpg_settings.img_height << ZR36057_FVAP_PAY);
751 btwrite(reg, ZR36057_FVAP);
752
753 /* horizontal */
754 if (zr->card.vfe_pol.hsync_pol)
755 btor(ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
756 else
757 btand(~ZR36057_VFEHCR_HSPol, ZR36057_VFEHCR);
758 reg = ((tvn->HSyncStart) << ZR36057_HSP_HsyncStart) |
759 (tvn->Wt << ZR36057_HSP_LineTot);
760 btwrite(reg, ZR36057_HSP);
761 reg = ((zr->jpg_settings.img_x +
762 tvn->HStart + 4) << ZR36057_FHAP_NAX) |
763 (zr->jpg_settings.img_width << ZR36057_FHAP_PAX);
764 btwrite(reg, ZR36057_FHAP);
765
766 /* field process parameters */
767 if (zr->jpg_settings.odd_even)
768 reg = ZR36057_FPP_Odd_Even;
769 else
770 reg = 0;
771
772 btwrite(reg, ZR36057_FPP);
773
774 /* Set proper VCLK Polarity, else colors will be wrong during playback */
775 //btor(ZR36057_VFESPFR_VCLKPol, ZR36057_VFESPFR);
776
777 /* code base address */
778 reg = virt_to_bus(zr->stat_com);
779 btwrite(reg, ZR36057_JCBA);
780
781 /* FIFO threshold (FIFO is 160. double words) */
782 /* NOTE: decimal values here */
783 switch (mode) {
784
785 case BUZ_MODE_STILL_COMPRESS:
786 case BUZ_MODE_MOTION_COMPRESS:
787 if (zr->card.type != BUZ)
788 reg = 140;
789 else
790 reg = 60;
791 break;
792
793 case BUZ_MODE_STILL_DECOMPRESS:
794 case BUZ_MODE_MOTION_DECOMPRESS:
795 reg = 20;
796 break;
797
798 default:
799 reg = 80;
800 break;
801
802 }
803 btwrite(reg, ZR36057_JCFT);
804 zr36057_adjust_vfe(zr, mode);
805
806 }
807
808 void
print_interrupts(struct zoran * zr)809 print_interrupts (struct zoran *zr)
810 {
811 int res, noerr = 0;
812
813 printk(KERN_INFO "%s: interrupts received:", ZR_DEVNAME(zr));
814 if ((res = zr->field_counter) < -1 || res > 1) {
815 printk(KERN_CONT " FD:%d", res);
816 }
817 if ((res = zr->intr_counter_GIRQ1) != 0) {
818 printk(KERN_CONT " GIRQ1:%d", res);
819 noerr++;
820 }
821 if ((res = zr->intr_counter_GIRQ0) != 0) {
822 printk(KERN_CONT " GIRQ0:%d", res);
823 noerr++;
824 }
825 if ((res = zr->intr_counter_CodRepIRQ) != 0) {
826 printk(KERN_CONT " CodRepIRQ:%d", res);
827 noerr++;
828 }
829 if ((res = zr->intr_counter_JPEGRepIRQ) != 0) {
830 printk(KERN_CONT " JPEGRepIRQ:%d", res);
831 noerr++;
832 }
833 if (zr->JPEG_max_missed) {
834 printk(KERN_CONT " JPEG delays: max=%d min=%d", zr->JPEG_max_missed,
835 zr->JPEG_min_missed);
836 }
837 if (zr->END_event_missed) {
838 printk(KERN_CONT " ENDs missed: %d", zr->END_event_missed);
839 }
840 //if (zr->jpg_queued_num) {
841 printk(KERN_CONT " queue_state=%ld/%ld/%ld/%ld", zr->jpg_que_tail,
842 zr->jpg_dma_tail, zr->jpg_dma_head, zr->jpg_que_head);
843 //}
844 if (!noerr) {
845 printk(KERN_CONT ": no interrupts detected.");
846 }
847 printk(KERN_CONT "\n");
848 }
849
850 void
clear_interrupt_counters(struct zoran * zr)851 clear_interrupt_counters (struct zoran *zr)
852 {
853 zr->intr_counter_GIRQ1 = 0;
854 zr->intr_counter_GIRQ0 = 0;
855 zr->intr_counter_CodRepIRQ = 0;
856 zr->intr_counter_JPEGRepIRQ = 0;
857 zr->field_counter = 0;
858 zr->IRQ1_in = 0;
859 zr->IRQ1_out = 0;
860 zr->JPEG_in = 0;
861 zr->JPEG_out = 0;
862 zr->JPEG_0 = 0;
863 zr->JPEG_1 = 0;
864 zr->END_event_missed = 0;
865 zr->JPEG_missed = 0;
866 zr->JPEG_max_missed = 0;
867 zr->JPEG_min_missed = 0x7fffffff;
868 }
869
870 static u32
count_reset_interrupt(struct zoran * zr)871 count_reset_interrupt (struct zoran *zr)
872 {
873 u32 isr;
874
875 if ((isr = btread(ZR36057_ISR) & 0x78000000)) {
876 if (isr & ZR36057_ISR_GIRQ1) {
877 btwrite(ZR36057_ISR_GIRQ1, ZR36057_ISR);
878 zr->intr_counter_GIRQ1++;
879 }
880 if (isr & ZR36057_ISR_GIRQ0) {
881 btwrite(ZR36057_ISR_GIRQ0, ZR36057_ISR);
882 zr->intr_counter_GIRQ0++;
883 }
884 if (isr & ZR36057_ISR_CodRepIRQ) {
885 btwrite(ZR36057_ISR_CodRepIRQ, ZR36057_ISR);
886 zr->intr_counter_CodRepIRQ++;
887 }
888 if (isr & ZR36057_ISR_JPEGRepIRQ) {
889 btwrite(ZR36057_ISR_JPEGRepIRQ, ZR36057_ISR);
890 zr->intr_counter_JPEGRepIRQ++;
891 }
892 }
893 return isr;
894 }
895
896 void
jpeg_start(struct zoran * zr)897 jpeg_start (struct zoran *zr)
898 {
899 int reg;
900
901 zr->frame_num = 0;
902
903 /* deassert P_reset, disable code transfer, deassert Active */
904 btwrite(ZR36057_JPC_P_Reset, ZR36057_JPC);
905 /* stop flushing the internal code buffer */
906 btand(~ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
907 /* enable code transfer */
908 btor(ZR36057_JPC_CodTrnsEn, ZR36057_JPC);
909
910 /* clear IRQs */
911 btwrite(IRQ_MASK, ZR36057_ISR);
912 /* enable the JPEG IRQs */
913 btwrite(zr->card.jpeg_int |
914 ZR36057_ICR_JPEGRepIRQ |
915 ZR36057_ICR_IntPinEn,
916 ZR36057_ICR);
917
918 set_frame(zr, 0); // \FRAME
919
920 /* set the JPEG codec guest ID */
921 reg = (zr->card.gpcs[1] << ZR36057_JCGI_JPEGuestID) |
922 (0 << ZR36057_JCGI_JPEGuestReg);
923 btwrite(reg, ZR36057_JCGI);
924
925 if (zr->card.video_vfe == CODEC_TYPE_ZR36016 &&
926 zr->card.video_codec == CODEC_TYPE_ZR36050) {
927 /* Enable processing on the ZR36016 */
928 if (zr->vfe)
929 zr36016_write(zr->vfe, 0, 1);
930
931 /* load the address of the GO register in the ZR36050 latch */
932 post_office_write(zr, 0, 0, 0);
933 }
934
935 /* assert Active */
936 btor(ZR36057_JPC_Active, ZR36057_JPC);
937
938 /* enable the Go generation */
939 btor(ZR36057_JMC_Go_en, ZR36057_JMC);
940 udelay(30);
941
942 set_frame(zr, 1); // /FRAME
943
944 dprintk(3, KERN_DEBUG "%s: jpeg_start\n", ZR_DEVNAME(zr));
945 }
946
947 void
zr36057_enable_jpg(struct zoran * zr,enum zoran_codec_mode mode)948 zr36057_enable_jpg (struct zoran *zr,
949 enum zoran_codec_mode mode)
950 {
951 struct vfe_settings cap;
952 int field_size =
953 zr->jpg_buffers.buffer_size / zr->jpg_settings.field_per_buff;
954
955 zr->codec_mode = mode;
956
957 cap.x = zr->jpg_settings.img_x;
958 cap.y = zr->jpg_settings.img_y;
959 cap.width = zr->jpg_settings.img_width;
960 cap.height = zr->jpg_settings.img_height;
961 cap.decimation =
962 zr->jpg_settings.HorDcm | (zr->jpg_settings.VerDcm << 8);
963 cap.quality = zr->jpg_settings.jpg_comp.quality;
964
965 switch (mode) {
966
967 case BUZ_MODE_MOTION_COMPRESS: {
968 struct jpeg_app_marker app;
969 struct jpeg_com_marker com;
970
971 /* In motion compress mode, the decoder output must be enabled, and
972 * the video bus direction set to input.
973 */
974 set_videobus_dir(zr, 0);
975 decoder_call(zr, video, s_stream, 1);
976 encoder_call(zr, video, s_routing, 0, 0, 0);
977
978 /* Take the JPEG codec and the VFE out of sleep */
979 jpeg_codec_sleep(zr, 0);
980
981 /* set JPEG app/com marker */
982 app.appn = zr->jpg_settings.jpg_comp.APPn;
983 app.len = zr->jpg_settings.jpg_comp.APP_len;
984 memcpy(app.data, zr->jpg_settings.jpg_comp.APP_data, 60);
985 zr->codec->control(zr->codec, CODEC_S_JPEG_APP_DATA,
986 sizeof(struct jpeg_app_marker), &app);
987
988 com.len = zr->jpg_settings.jpg_comp.COM_len;
989 memcpy(com.data, zr->jpg_settings.jpg_comp.COM_data, 60);
990 zr->codec->control(zr->codec, CODEC_S_JPEG_COM_DATA,
991 sizeof(struct jpeg_com_marker), &com);
992
993 /* Setup the JPEG codec */
994 zr->codec->control(zr->codec, CODEC_S_JPEG_TDS_BYTE,
995 sizeof(int), &field_size);
996 zr->codec->set_video(zr->codec, zr->timing, &cap,
997 &zr->card.vfe_pol);
998 zr->codec->set_mode(zr->codec, CODEC_DO_COMPRESSION);
999
1000 /* Setup the VFE */
1001 if (zr->vfe) {
1002 zr->vfe->control(zr->vfe, CODEC_S_JPEG_TDS_BYTE,
1003 sizeof(int), &field_size);
1004 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1005 &zr->card.vfe_pol);
1006 zr->vfe->set_mode(zr->vfe, CODEC_DO_COMPRESSION);
1007 }
1008
1009 init_jpeg_queue(zr);
1010 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1011
1012 clear_interrupt_counters(zr);
1013 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_COMPRESS)\n",
1014 ZR_DEVNAME(zr));
1015 break;
1016 }
1017
1018 case BUZ_MODE_MOTION_DECOMPRESS:
1019 /* In motion decompression mode, the decoder output must be disabled, and
1020 * the video bus direction set to output.
1021 */
1022 decoder_call(zr, video, s_stream, 0);
1023 set_videobus_dir(zr, 1);
1024 encoder_call(zr, video, s_routing, 1, 0, 0);
1025
1026 /* Take the JPEG codec and the VFE out of sleep */
1027 jpeg_codec_sleep(zr, 0);
1028 /* Setup the VFE */
1029 if (zr->vfe) {
1030 zr->vfe->set_video(zr->vfe, zr->timing, &cap,
1031 &zr->card.vfe_pol);
1032 zr->vfe->set_mode(zr->vfe, CODEC_DO_EXPANSION);
1033 }
1034 /* Setup the JPEG codec */
1035 zr->codec->set_video(zr->codec, zr->timing, &cap,
1036 &zr->card.vfe_pol);
1037 zr->codec->set_mode(zr->codec, CODEC_DO_EXPANSION);
1038
1039 init_jpeg_queue(zr);
1040 zr36057_set_jpg(zr, mode); // \P_Reset, ... Video param, FIFO
1041
1042 clear_interrupt_counters(zr);
1043 dprintk(2, KERN_INFO "%s: enable_jpg(MOTION_DECOMPRESS)\n",
1044 ZR_DEVNAME(zr));
1045 break;
1046
1047 case BUZ_MODE_IDLE:
1048 default:
1049 /* shut down processing */
1050 btand(~(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ),
1051 ZR36057_ICR);
1052 btwrite(zr->card.jpeg_int | ZR36057_ICR_JPEGRepIRQ,
1053 ZR36057_ISR);
1054 btand(~ZR36057_JMC_Go_en, ZR36057_JMC); // \Go_en
1055
1056 msleep(50);
1057
1058 set_videobus_dir(zr, 0);
1059 set_frame(zr, 1); // /FRAME
1060 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR); // /CFlush
1061 btwrite(0, ZR36057_JPC); // \P_Reset,\CodTrnsEn,\Active
1062 btand(~ZR36057_JMC_VFIFO_FB, ZR36057_JMC);
1063 btand(~ZR36057_JMC_SyncMstr, ZR36057_JMC);
1064 jpeg_codec_reset(zr);
1065 jpeg_codec_sleep(zr, 1);
1066 zr36057_adjust_vfe(zr, mode);
1067
1068 decoder_call(zr, video, s_stream, 1);
1069 encoder_call(zr, video, s_routing, 0, 0, 0);
1070
1071 dprintk(2, KERN_INFO "%s: enable_jpg(IDLE)\n", ZR_DEVNAME(zr));
1072 break;
1073
1074 }
1075 }
1076
1077 /* when this is called the spinlock must be held */
1078 void
zoran_feed_stat_com(struct zoran * zr)1079 zoran_feed_stat_com (struct zoran *zr)
1080 {
1081 /* move frames from pending queue to DMA */
1082
1083 int frame, i, max_stat_com;
1084
1085 max_stat_com =
1086 (zr->jpg_settings.TmpDcm ==
1087 1) ? BUZ_NUM_STAT_COM : (BUZ_NUM_STAT_COM >> 1);
1088
1089 while ((zr->jpg_dma_head - zr->jpg_dma_tail) < max_stat_com &&
1090 zr->jpg_dma_head < zr->jpg_que_head) {
1091
1092 frame = zr->jpg_pend[zr->jpg_dma_head & BUZ_MASK_FRAME];
1093 if (zr->jpg_settings.TmpDcm == 1) {
1094 /* fill 1 stat_com entry */
1095 i = (zr->jpg_dma_head -
1096 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1097 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1098 break;
1099 zr->stat_com[i] =
1100 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1101 } else {
1102 /* fill 2 stat_com entries */
1103 i = ((zr->jpg_dma_head -
1104 zr->jpg_err_shift) & 1) * 2;
1105 if (!(zr->stat_com[i] & cpu_to_le32(1)))
1106 break;
1107 zr->stat_com[i] =
1108 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1109 zr->stat_com[i + 1] =
1110 cpu_to_le32(zr->jpg_buffers.buffer[frame].jpg.frag_tab_bus);
1111 }
1112 zr->jpg_buffers.buffer[frame].state = BUZ_STATE_DMA;
1113 zr->jpg_dma_head++;
1114
1115 }
1116 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS)
1117 zr->jpg_queued_num++;
1118 }
1119
1120 /* when this is called the spinlock must be held */
1121 static void
zoran_reap_stat_com(struct zoran * zr)1122 zoran_reap_stat_com (struct zoran *zr)
1123 {
1124 /* move frames from DMA queue to done queue */
1125
1126 int i;
1127 u32 stat_com;
1128 unsigned int seq;
1129 unsigned int dif;
1130 struct zoran_buffer *buffer;
1131 int frame;
1132
1133 /* In motion decompress we don't have a hardware frame counter,
1134 * we just count the interrupts here */
1135
1136 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1137 zr->jpg_seq_num++;
1138 }
1139 while (zr->jpg_dma_tail < zr->jpg_dma_head) {
1140 if (zr->jpg_settings.TmpDcm == 1)
1141 i = (zr->jpg_dma_tail -
1142 zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1143 else
1144 i = ((zr->jpg_dma_tail -
1145 zr->jpg_err_shift) & 1) * 2 + 1;
1146
1147 stat_com = le32_to_cpu(zr->stat_com[i]);
1148
1149 if ((stat_com & 1) == 0) {
1150 return;
1151 }
1152 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1153 buffer = &zr->jpg_buffers.buffer[frame];
1154 v4l2_get_timestamp(&buffer->bs.timestamp);
1155
1156 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1157 buffer->bs.length = (stat_com & 0x7fffff) >> 1;
1158
1159 /* update sequence number with the help of the counter in stat_com */
1160
1161 seq = ((stat_com >> 24) + zr->jpg_err_seq) & 0xff;
1162 dif = (seq - zr->jpg_seq_num) & 0xff;
1163 zr->jpg_seq_num += dif;
1164 } else {
1165 buffer->bs.length = 0;
1166 }
1167 buffer->bs.seq =
1168 zr->jpg_settings.TmpDcm ==
1169 2 ? (zr->jpg_seq_num >> 1) : zr->jpg_seq_num;
1170 buffer->state = BUZ_STATE_DONE;
1171
1172 zr->jpg_dma_tail++;
1173 }
1174 }
1175
zoran_restart(struct zoran * zr)1176 static void zoran_restart(struct zoran *zr)
1177 {
1178 /* Now the stat_comm buffer is ready for restart */
1179 unsigned int status = 0;
1180 int mode;
1181
1182 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1183 decoder_call(zr, video, g_input_status, &status);
1184 mode = CODEC_DO_COMPRESSION;
1185 } else {
1186 status = V4L2_IN_ST_NO_SIGNAL;
1187 mode = CODEC_DO_EXPANSION;
1188 }
1189 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1190 !(status & V4L2_IN_ST_NO_SIGNAL)) {
1191 /********** RESTART code *************/
1192 jpeg_codec_reset(zr);
1193 zr->codec->set_mode(zr->codec, mode);
1194 zr36057_set_jpg(zr, zr->codec_mode);
1195 jpeg_start(zr);
1196
1197 if (zr->num_errors <= 8)
1198 dprintk(2, KERN_INFO "%s: Restart\n",
1199 ZR_DEVNAME(zr));
1200
1201 zr->JPEG_missed = 0;
1202 zr->JPEG_error = 2;
1203 /********** End RESTART code ***********/
1204 }
1205 }
1206
1207 static void
error_handler(struct zoran * zr,u32 astat,u32 stat)1208 error_handler (struct zoran *zr,
1209 u32 astat,
1210 u32 stat)
1211 {
1212 int i;
1213
1214 /* This is JPEG error handling part */
1215 if (zr->codec_mode != BUZ_MODE_MOTION_COMPRESS &&
1216 zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS) {
1217 return;
1218 }
1219
1220 if ((stat & 1) == 0 &&
1221 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS &&
1222 zr->jpg_dma_tail - zr->jpg_que_tail >= zr->jpg_buffers.num_buffers) {
1223 /* No free buffers... */
1224 zoran_reap_stat_com(zr);
1225 zoran_feed_stat_com(zr);
1226 wake_up_interruptible(&zr->jpg_capq);
1227 zr->JPEG_missed = 0;
1228 return;
1229 }
1230
1231 if (zr->JPEG_error == 1) {
1232 zoran_restart(zr);
1233 return;
1234 }
1235
1236 /*
1237 * First entry: error just happened during normal operation
1238 *
1239 * In BUZ_MODE_MOTION_COMPRESS:
1240 *
1241 * Possible glitch in TV signal. In this case we should
1242 * stop the codec and wait for good quality signal before
1243 * restarting it to avoid further problems
1244 *
1245 * In BUZ_MODE_MOTION_DECOMPRESS:
1246 *
1247 * Bad JPEG frame: we have to mark it as processed (codec crashed
1248 * and was not able to do it itself), and to remove it from queue.
1249 */
1250 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1251 udelay(1);
1252 stat = stat | (post_office_read(zr, 7, 0) & 3) << 8;
1253 btwrite(0, ZR36057_JPC);
1254 btor(ZR36057_MCTCR_CFlush, ZR36057_MCTCR);
1255 jpeg_codec_reset(zr);
1256 jpeg_codec_sleep(zr, 1);
1257 zr->JPEG_error = 1;
1258 zr->num_errors++;
1259
1260 /* Report error */
1261 if (zr36067_debug > 1 && zr->num_errors <= 8) {
1262 long frame;
1263 int j;
1264
1265 frame = zr->jpg_pend[zr->jpg_dma_tail & BUZ_MASK_FRAME];
1266 printk(KERN_ERR
1267 "%s: JPEG error stat=0x%08x(0x%08x) queue_state=%ld/%ld/%ld/%ld seq=%ld frame=%ld. Codec stopped. ",
1268 ZR_DEVNAME(zr), stat, zr->last_isr,
1269 zr->jpg_que_tail, zr->jpg_dma_tail,
1270 zr->jpg_dma_head, zr->jpg_que_head,
1271 zr->jpg_seq_num, frame);
1272 printk(KERN_INFO "stat_com frames:");
1273 for (j = 0; j < BUZ_NUM_STAT_COM; j++) {
1274 for (i = 0; i < zr->jpg_buffers.num_buffers; i++) {
1275 if (le32_to_cpu(zr->stat_com[j]) == zr->jpg_buffers.buffer[i].jpg.frag_tab_bus)
1276 printk(KERN_CONT "% d->%d", j, i);
1277 }
1278 }
1279 printk(KERN_CONT "\n");
1280 }
1281 /* Find an entry in stat_com and rotate contents */
1282 if (zr->jpg_settings.TmpDcm == 1)
1283 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1284 else
1285 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1286 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) {
1287 /* Mimic zr36067 operation */
1288 zr->stat_com[i] |= cpu_to_le32(1);
1289 if (zr->jpg_settings.TmpDcm != 1)
1290 zr->stat_com[i + 1] |= cpu_to_le32(1);
1291 /* Refill */
1292 zoran_reap_stat_com(zr);
1293 zoran_feed_stat_com(zr);
1294 wake_up_interruptible(&zr->jpg_capq);
1295 /* Find an entry in stat_com again after refill */
1296 if (zr->jpg_settings.TmpDcm == 1)
1297 i = (zr->jpg_dma_tail - zr->jpg_err_shift) & BUZ_MASK_STAT_COM;
1298 else
1299 i = ((zr->jpg_dma_tail - zr->jpg_err_shift) & 1) * 2;
1300 }
1301 if (i) {
1302 /* Rotate stat_comm entries to make current entry first */
1303 int j;
1304 __le32 bus_addr[BUZ_NUM_STAT_COM];
1305
1306 /* Here we are copying the stat_com array, which
1307 * is already in little endian format, so
1308 * no endian conversions here
1309 */
1310 memcpy(bus_addr, zr->stat_com, sizeof(bus_addr));
1311
1312 for (j = 0; j < BUZ_NUM_STAT_COM; j++)
1313 zr->stat_com[j] = bus_addr[(i + j) & BUZ_MASK_STAT_COM];
1314
1315 zr->jpg_err_shift += i;
1316 zr->jpg_err_shift &= BUZ_MASK_STAT_COM;
1317 }
1318 if (zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)
1319 zr->jpg_err_seq = zr->jpg_seq_num; /* + 1; */
1320 zoran_restart(zr);
1321 }
1322
1323 irqreturn_t
zoran_irq(int irq,void * dev_id)1324 zoran_irq (int irq,
1325 void *dev_id)
1326 {
1327 u32 stat, astat;
1328 int count;
1329 struct zoran *zr;
1330 unsigned long flags;
1331
1332 zr = dev_id;
1333 count = 0;
1334
1335 if (zr->testing) {
1336 /* Testing interrupts */
1337 spin_lock_irqsave(&zr->spinlock, flags);
1338 while ((stat = count_reset_interrupt(zr))) {
1339 if (count++ > 100) {
1340 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1341 dprintk(1,
1342 KERN_ERR
1343 "%s: IRQ lockup while testing, isr=0x%08x, cleared int mask\n",
1344 ZR_DEVNAME(zr), stat);
1345 wake_up_interruptible(&zr->test_q);
1346 }
1347 }
1348 zr->last_isr = stat;
1349 spin_unlock_irqrestore(&zr->spinlock, flags);
1350 return IRQ_HANDLED;
1351 }
1352
1353 spin_lock_irqsave(&zr->spinlock, flags);
1354 while (1) {
1355 /* get/clear interrupt status bits */
1356 stat = count_reset_interrupt(zr);
1357 astat = stat & IRQ_MASK;
1358 if (!astat) {
1359 break;
1360 }
1361 dprintk(4,
1362 KERN_DEBUG
1363 "zoran_irq: astat: 0x%08x, mask: 0x%08x\n",
1364 astat, btread(ZR36057_ICR));
1365 if (astat & zr->card.vsync_int) { // SW
1366
1367 if (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1368 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS) {
1369 /* count missed interrupts */
1370 zr->JPEG_missed++;
1371 }
1372 //post_office_read(zr,1,0);
1373 /* Interrupts may still happen when
1374 * zr->v4l_memgrab_active is switched off.
1375 * We simply ignore them */
1376
1377 if (zr->v4l_memgrab_active) {
1378 /* A lot more checks should be here ... */
1379 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_SnapShot) == 0)
1380 dprintk(1,
1381 KERN_WARNING
1382 "%s: BuzIRQ with SnapShot off ???\n",
1383 ZR_DEVNAME(zr));
1384
1385 if (zr->v4l_grab_frame != NO_GRAB_ACTIVE) {
1386 /* There is a grab on a frame going on, check if it has finished */
1387 if ((btread(ZR36057_VSSFGR) & ZR36057_VSSFGR_FrameGrab) == 0) {
1388 /* it is finished, notify the user */
1389
1390 zr->v4l_buffers.buffer[zr->v4l_grab_frame].state = BUZ_STATE_DONE;
1391 zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.seq = zr->v4l_grab_seq;
1392 v4l2_get_timestamp(&zr->v4l_buffers.buffer[zr->v4l_grab_frame].bs.timestamp);
1393 zr->v4l_grab_frame = NO_GRAB_ACTIVE;
1394 zr->v4l_pend_tail++;
1395 }
1396 }
1397
1398 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE)
1399 wake_up_interruptible(&zr->v4l_capq);
1400
1401 /* Check if there is another grab queued */
1402
1403 if (zr->v4l_grab_frame == NO_GRAB_ACTIVE &&
1404 zr->v4l_pend_tail != zr->v4l_pend_head) {
1405 int frame = zr->v4l_pend[zr->v4l_pend_tail & V4L_MASK_FRAME];
1406 u32 reg;
1407
1408 zr->v4l_grab_frame = frame;
1409
1410 /* Set zr36057 video front end and enable video */
1411
1412 /* Buffer address */
1413
1414 reg = zr->v4l_buffers.buffer[frame].v4l.fbuffer_bus;
1415 btwrite(reg, ZR36057_VDTR);
1416 if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1417 reg += zr->v4l_settings.bytesperline;
1418 btwrite(reg, ZR36057_VDBR);
1419
1420 /* video stride, status, and frame grab register */
1421 reg = 0;
1422 if (zr->v4l_settings.height > BUZ_MAX_HEIGHT / 2)
1423 reg += zr->v4l_settings.bytesperline;
1424 reg = (reg << ZR36057_VSSFGR_DispStride);
1425 reg |= ZR36057_VSSFGR_VidOvf;
1426 reg |= ZR36057_VSSFGR_SnapShot;
1427 reg |= ZR36057_VSSFGR_FrameGrab;
1428 btwrite(reg, ZR36057_VSSFGR);
1429
1430 btor(ZR36057_VDCR_VidEn,
1431 ZR36057_VDCR);
1432 }
1433 }
1434
1435 /* even if we don't grab, we do want to increment
1436 * the sequence counter to see lost frames */
1437 zr->v4l_grab_seq++;
1438 }
1439 #if (IRQ_MASK & ZR36057_ISR_CodRepIRQ)
1440 if (astat & ZR36057_ISR_CodRepIRQ) {
1441 zr->intr_counter_CodRepIRQ++;
1442 IDEBUG(printk(KERN_DEBUG "%s: ZR36057_ISR_CodRepIRQ\n",
1443 ZR_DEVNAME(zr)));
1444 btand(~ZR36057_ICR_CodRepIRQ, ZR36057_ICR);
1445 }
1446 #endif /* (IRQ_MASK & ZR36057_ISR_CodRepIRQ) */
1447
1448 #if (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ)
1449 if ((astat & ZR36057_ISR_JPEGRepIRQ) &&
1450 (zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS ||
1451 zr->codec_mode == BUZ_MODE_MOTION_COMPRESS)) {
1452 if (zr36067_debug > 1 && (!zr->frame_num || zr->JPEG_error)) {
1453 char sv[BUZ_NUM_STAT_COM + 1];
1454 int i;
1455
1456 printk(KERN_INFO
1457 "%s: first frame ready: state=0x%08x odd_even=%d field_per_buff=%d delay=%d\n",
1458 ZR_DEVNAME(zr), stat,
1459 zr->jpg_settings.odd_even,
1460 zr->jpg_settings.field_per_buff,
1461 zr->JPEG_missed);
1462
1463 for (i = 0; i < BUZ_NUM_STAT_COM; i++)
1464 sv[i] = le32_to_cpu(zr->stat_com[i]) & 1 ? '1' : '0';
1465 sv[BUZ_NUM_STAT_COM] = 0;
1466 printk(KERN_INFO
1467 "%s: stat_com=%s queue_state=%ld/%ld/%ld/%ld\n",
1468 ZR_DEVNAME(zr), sv,
1469 zr->jpg_que_tail,
1470 zr->jpg_dma_tail,
1471 zr->jpg_dma_head,
1472 zr->jpg_que_head);
1473 } else {
1474 /* Get statistics */
1475 if (zr->JPEG_missed > zr->JPEG_max_missed)
1476 zr->JPEG_max_missed = zr->JPEG_missed;
1477 if (zr->JPEG_missed < zr->JPEG_min_missed)
1478 zr->JPEG_min_missed = zr->JPEG_missed;
1479 }
1480
1481 if (zr36067_debug > 2 && zr->frame_num < 6) {
1482 int i;
1483
1484 printk(KERN_INFO "%s: seq=%ld stat_com:",
1485 ZR_DEVNAME(zr), zr->jpg_seq_num);
1486 for (i = 0; i < 4; i++) {
1487 printk(KERN_CONT " %08x",
1488 le32_to_cpu(zr->stat_com[i]));
1489 }
1490 printk(KERN_CONT "\n");
1491 }
1492 zr->frame_num++;
1493 zr->JPEG_missed = 0;
1494 zr->JPEG_error = 0;
1495 zoran_reap_stat_com(zr);
1496 zoran_feed_stat_com(zr);
1497 wake_up_interruptible(&zr->jpg_capq);
1498 }
1499 #endif /* (IRQ_MASK & ZR36057_ISR_JPEGRepIRQ) */
1500
1501 /* DATERR, too many fields missed, error processing */
1502 if ((astat & zr->card.jpeg_int) ||
1503 zr->JPEG_missed > 25 ||
1504 zr->JPEG_error == 1 ||
1505 ((zr->codec_mode == BUZ_MODE_MOTION_DECOMPRESS) &&
1506 (zr->frame_num && (zr->JPEG_missed > zr->jpg_settings.field_per_buff)))) {
1507 error_handler(zr, astat, stat);
1508 }
1509
1510 count++;
1511 if (count > 10) {
1512 dprintk(2, KERN_WARNING "%s: irq loop %d\n",
1513 ZR_DEVNAME(zr), count);
1514 if (count > 20) {
1515 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1516 dprintk(2,
1517 KERN_ERR
1518 "%s: IRQ lockup, cleared int mask\n",
1519 ZR_DEVNAME(zr));
1520 break;
1521 }
1522 }
1523 zr->last_isr = stat;
1524 }
1525 spin_unlock_irqrestore(&zr->spinlock, flags);
1526
1527 return IRQ_HANDLED;
1528 }
1529
1530 void
zoran_set_pci_master(struct zoran * zr,int set_master)1531 zoran_set_pci_master (struct zoran *zr,
1532 int set_master)
1533 {
1534 if (set_master) {
1535 pci_set_master(zr->pci_dev);
1536 } else {
1537 u16 command;
1538
1539 pci_read_config_word(zr->pci_dev, PCI_COMMAND, &command);
1540 command &= ~PCI_COMMAND_MASTER;
1541 pci_write_config_word(zr->pci_dev, PCI_COMMAND, command);
1542 }
1543 }
1544
1545 void
zoran_init_hardware(struct zoran * zr)1546 zoran_init_hardware (struct zoran *zr)
1547 {
1548 /* Enable bus-mastering */
1549 zoran_set_pci_master(zr, 1);
1550
1551 /* Initialize the board */
1552 if (zr->card.init) {
1553 zr->card.init(zr);
1554 }
1555
1556 decoder_call(zr, core, init, 0);
1557 decoder_call(zr, video, s_std, zr->norm);
1558 decoder_call(zr, video, s_routing,
1559 zr->card.input[zr->input].muxsel, 0, 0);
1560
1561 encoder_call(zr, core, init, 0);
1562 encoder_call(zr, video, s_std_output, zr->norm);
1563 encoder_call(zr, video, s_routing, 0, 0, 0);
1564
1565 /* toggle JPEG codec sleep to sync PLL */
1566 jpeg_codec_sleep(zr, 1);
1567 jpeg_codec_sleep(zr, 0);
1568
1569 /*
1570 * set individual interrupt enables (without GIRQ1)
1571 * but don't global enable until zoran_open()
1572 */
1573 zr36057_init_vfe(zr);
1574
1575 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1576
1577 btwrite(IRQ_MASK, ZR36057_ISR); // Clears interrupts
1578 }
1579
1580 void
zr36057_restart(struct zoran * zr)1581 zr36057_restart (struct zoran *zr)
1582 {
1583 btwrite(0, ZR36057_SPGPPCR);
1584 mdelay(1);
1585 btor(ZR36057_SPGPPCR_SoftReset, ZR36057_SPGPPCR);
1586 mdelay(1);
1587
1588 /* assert P_Reset */
1589 btwrite(0, ZR36057_JPC);
1590 /* set up GPIO direction - all output */
1591 btwrite(ZR36057_SPGPPCR_SoftReset | 0, ZR36057_SPGPPCR);
1592
1593 /* set up GPIO pins and guest bus timing */
1594 btwrite((0x81 << 24) | 0x8888, ZR36057_GPPGCR1);
1595 }
1596
1597 /*
1598 * initialize video front end
1599 */
1600
1601 static void
zr36057_init_vfe(struct zoran * zr)1602 zr36057_init_vfe (struct zoran *zr)
1603 {
1604 u32 reg;
1605
1606 reg = btread(ZR36057_VFESPFR);
1607 reg |= ZR36057_VFESPFR_LittleEndian;
1608 reg &= ~ZR36057_VFESPFR_VCLKPol;
1609 reg |= ZR36057_VFESPFR_ExtFl;
1610 reg |= ZR36057_VFESPFR_TopField;
1611 btwrite(reg, ZR36057_VFESPFR);
1612 reg = btread(ZR36057_VDCR);
1613 if (pci_pci_problems & PCIPCI_TRITON)
1614 // || zr->revision < 1) // Revision 1 has also Triton support
1615 reg &= ~ZR36057_VDCR_Triton;
1616 else
1617 reg |= ZR36057_VDCR_Triton;
1618 btwrite(reg, ZR36057_VDCR);
1619 }
1620
