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Linux-2.6.12-rc2
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / pms.c
1 /*
2 * Media Vision Pro Movie Studio
3 * or
4 * "all you need is an I2C bus some RAM and a prayer"
5 *
6 * This draws heavily on code
7 *
8 * (c) Wolfgang Koehler, wolf@first.gmd.de, Dec. 1994
9 * Kiefernring 15
10 * 14478 Potsdam, Germany
11 *
12 * Most of this code is directly derived from his userspace driver.
13 * His driver works so send any reports to alan@redhat.com unless the
14 * userspace driver also doesn't work for you...
15 *
16 * Changes:
17 * 08/07/2003 Daniele Bellucci <bellucda@tiscali.it>
18 * - pms_capture: report back -EFAULT
19 */
20
21 #include <linux/module.h>
22 #include <linux/delay.h>
23 #include <linux/errno.h>
24 #include <linux/fs.h>
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/mm.h>
28 #include <linux/ioport.h>
29 #include <linux/init.h>
30 #include <asm/io.h>
31 #include <linux/sched.h>
32 #include <linux/videodev.h>
33 #include <asm/uaccess.h>
34
35
36 #define MOTOROLA 1
37 #define PHILIPS2 2
38 #define PHILIPS1 3
39 #define MVVMEMORYWIDTH 0x40 /* 512 bytes */
40
41 struct pms_device
42 {
43 struct video_device v;
44 struct video_picture picture;
45 int height;
46 int width;
47 struct semaphore lock;
48 };
49
50 struct i2c_info
51 {
52 u8 slave;
53 u8 sub;
54 u8 data;
55 u8 hits;
56 };
57
58 static int i2c_count = 0;
59 static struct i2c_info i2cinfo[64];
60
61 static int decoder = PHILIPS2;
62 static int standard = 0; /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
63
64 /*
65 * I/O ports and Shared Memory
66 */
67
68 static int io_port = 0x250;
69 static int data_port = 0x251;
70 static int mem_base = 0xC8000;
71 static void __iomem *mem;
72 static int video_nr = -1;
73
74
75
76 static inline void mvv_write(u8 index, u8 value)
77 {
78 outw(index|(value<<8), io_port);
79 }
80
81 static inline u8 mvv_read(u8 index)
82 {
83 outb(index, io_port);
84 return inb(data_port);
85 }
86
87 static int pms_i2c_stat(u8 slave)
88 {
89 int counter;
90 int i;
91
92 outb(0x28, io_port);
93
94 counter=0;
95 while((inb(data_port)&0x01)==0)
96 if(counter++==256)
97 break;
98
99 while((inb(data_port)&0x01)!=0)
100 if(counter++==256)
101 break;
102
103 outb(slave, io_port);
104
105 counter=0;
106 while((inb(data_port)&0x01)==0)
107 if(counter++==256)
108 break;
109
110 while((inb(data_port)&0x01)!=0)
111 if(counter++==256)
112 break;
113
114 for(i=0;i<12;i++)
115 {
116 char st=inb(data_port);
117 if((st&2)!=0)
118 return -1;
119 if((st&1)==0)
120 break;
121 }
122 outb(0x29, io_port);
123 return inb(data_port);
124 }
125
126 static int pms_i2c_write(u16 slave, u16 sub, u16 data)
127 {
128 int skip=0;
129 int count;
130 int i;
131
132 for(i=0;i<i2c_count;i++)
133 {
134 if((i2cinfo[i].slave==slave) &&
135 (i2cinfo[i].sub == sub))
136 {
137 if(i2cinfo[i].data==data)
138 skip=1;
139 i2cinfo[i].data=data;
140 i=i2c_count+1;
141 }
142 }
143
144 if(i==i2c_count && i2c_count<64)
145 {
146 i2cinfo[i2c_count].slave=slave;
147 i2cinfo[i2c_count].sub=sub;
148 i2cinfo[i2c_count].data=data;
149 i2c_count++;
150 }
151
152 if(skip)
153 return 0;
154
155 mvv_write(0x29, sub);
156 mvv_write(0x2A, data);
157 mvv_write(0x28, slave);
158
159 outb(0x28, io_port);
160
161 count=0;
162 while((inb(data_port)&1)==0)
163 if(count>255)
164 break;
165 while((inb(data_port)&1)!=0)
166 if(count>255)
167 break;
168
169 count=inb(data_port);
170
171 if(count&2)
172 return -1;
173 return count;
174 }
175
176 static int pms_i2c_read(int slave, int sub)
177 {
178 int i=0;
179 for(i=0;i<i2c_count;i++)
180 {
181 if(i2cinfo[i].slave==slave && i2cinfo[i].sub==sub)
182 return i2cinfo[i].data;
183 }
184 return 0;
185 }
186
187
188 static void pms_i2c_andor(int slave, int sub, int and, int or)
189 {
190 u8 tmp;
191
192 tmp=pms_i2c_read(slave, sub);
193 tmp = (tmp&and)|or;
194 pms_i2c_write(slave, sub, tmp);
195 }
196
197 /*
198 * Control functions
199 */
200
201
202 static void pms_videosource(short source)
203 {
204 mvv_write(0x2E, source?0x31:0x30);
205 }
206
207 static void pms_hue(short hue)
208 {
209 switch(decoder)
210 {
211 case MOTOROLA:
212 pms_i2c_write(0x8A, 0x00, hue);
213 break;
214 case PHILIPS2:
215 pms_i2c_write(0x8A, 0x07, hue);
216 break;
217 case PHILIPS1:
218 pms_i2c_write(0x42, 0x07, hue);
219 break;
220 }
221 }
222
223 static void pms_colour(short colour)
224 {
225 switch(decoder)
226 {
227 case MOTOROLA:
228 pms_i2c_write(0x8A, 0x00, colour);
229 break;
230 case PHILIPS1:
231 pms_i2c_write(0x42, 0x12, colour);
232 break;
233 }
234 }
235
236
237 static void pms_contrast(short contrast)
238 {
239 switch(decoder)
240 {
241 case MOTOROLA:
242 pms_i2c_write(0x8A, 0x00, contrast);
243 break;
244 case PHILIPS1:
245 pms_i2c_write(0x42, 0x13, contrast);
246 break;
247 }
248 }
249
250 static void pms_brightness(short brightness)
251 {
252 switch(decoder)
253 {
254 case MOTOROLA:
255 pms_i2c_write(0x8A, 0x00, brightness);
256 pms_i2c_write(0x8A, 0x00, brightness);
257 pms_i2c_write(0x8A, 0x00, brightness);
258 break;
259 case PHILIPS1:
260 pms_i2c_write(0x42, 0x19, brightness);
261 break;
262 }
263 }
264
265
266 static void pms_format(short format)
267 {
268 int target;
269 standard = format;
270
271 if(decoder==PHILIPS1)
272 target=0x42;
273 else if(decoder==PHILIPS2)
274 target=0x8A;
275 else
276 return;
277
278 switch(format)
279 {
280 case 0: /* Auto */
281 pms_i2c_andor(target, 0x0D, 0xFE,0x00);
282 pms_i2c_andor(target, 0x0F, 0x3F,0x80);
283 break;
284 case 1: /* NTSC */
285 pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
286 pms_i2c_andor(target, 0x0F, 0x3F, 0x40);
287 break;
288 case 2: /* PAL */
289 pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
290 pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
291 break;
292 case 3: /* SECAM */
293 pms_i2c_andor(target, 0x0D, 0xFE, 0x01);
294 pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
295 break;
296 }
297 }
298
299 #ifdef FOR_FUTURE_EXPANSION
300
301 /*
302 * These features of the PMS card are not currently exposes. They
303 * could become a private v4l ioctl for PMSCONFIG or somesuch if
304 * people need it. We also don't yet use the PMS interrupt.
305 */
306
307 static void pms_hstart(short start)
308 {
309 switch(decoder)
310 {
311 case PHILIPS1:
312 pms_i2c_write(0x8A, 0x05, start);
313 pms_i2c_write(0x8A, 0x18, start);
314 break;
315 case PHILIPS2:
316 pms_i2c_write(0x42, 0x05, start);
317 pms_i2c_write(0x42, 0x18, start);
318 break;
319 }
320 }
321
322 /*
323 * Bandpass filters
324 */
325
326 static void pms_bandpass(short pass)
327 {
328 if(decoder==PHILIPS2)
329 pms_i2c_andor(0x8A, 0x06, 0xCF, (pass&0x03)<<4);
330 else if(decoder==PHILIPS1)
331 pms_i2c_andor(0x42, 0x06, 0xCF, (pass&0x03)<<4);
332 }
333
334 static void pms_antisnow(short snow)
335 {
336 if(decoder==PHILIPS2)
337 pms_i2c_andor(0x8A, 0x06, 0xF3, (snow&0x03)<<2);
338 else if(decoder==PHILIPS1)
339 pms_i2c_andor(0x42, 0x06, 0xF3, (snow&0x03)<<2);
340 }
341
342 static void pms_sharpness(short sharp)
343 {
344 if(decoder==PHILIPS2)
345 pms_i2c_andor(0x8A, 0x06, 0xFC, sharp&0x03);
346 else if(decoder==PHILIPS1)
347 pms_i2c_andor(0x42, 0x06, 0xFC, sharp&0x03);
348 }
349
350 static void pms_chromaagc(short agc)
351 {
352 if(decoder==PHILIPS2)
353 pms_i2c_andor(0x8A, 0x0C, 0x9F, (agc&0x03)<<5);
354 else if(decoder==PHILIPS1)
355 pms_i2c_andor(0x42, 0x0C, 0x9F, (agc&0x03)<<5);
356 }
357
358 static void pms_vertnoise(short noise)
359 {
360 if(decoder==PHILIPS2)
361 pms_i2c_andor(0x8A, 0x10, 0xFC, noise&3);
362 else if(decoder==PHILIPS1)
363 pms_i2c_andor(0x42, 0x10, 0xFC, noise&3);
364 }
365
366 static void pms_forcecolour(short colour)
367 {
368 if(decoder==PHILIPS2)
369 pms_i2c_andor(0x8A, 0x0C, 0x7F, (colour&1)<<7);
370 else if(decoder==PHILIPS1)
371 pms_i2c_andor(0x42, 0x0C, 0x7, (colour&1)<<7);
372 }
373
374 static void pms_antigamma(short gamma)
375 {
376 if(decoder==PHILIPS2)
377 pms_i2c_andor(0xB8, 0x00, 0x7F, (gamma&1)<<7);
378 else if(decoder==PHILIPS1)
379 pms_i2c_andor(0x42, 0x20, 0x7, (gamma&1)<<7);
380 }
381
382 static void pms_prefilter(short filter)
383 {
384 if(decoder==PHILIPS2)
385 pms_i2c_andor(0x8A, 0x06, 0xBF, (filter&1)<<6);
386 else if(decoder==PHILIPS1)
387 pms_i2c_andor(0x42, 0x06, 0xBF, (filter&1)<<6);
388 }
389
390 static void pms_hfilter(short filter)
391 {
392 if(decoder==PHILIPS2)
393 pms_i2c_andor(0xB8, 0x04, 0x1F, (filter&7)<<5);
394 else if(decoder==PHILIPS1)
395 pms_i2c_andor(0x42, 0x24, 0x1F, (filter&7)<<5);
396 }
397
398 static void pms_vfilter(short filter)
399 {
400 if(decoder==PHILIPS2)
401 pms_i2c_andor(0xB8, 0x08, 0x9F, (filter&3)<<5);
402 else if(decoder==PHILIPS1)
403 pms_i2c_andor(0x42, 0x28, 0x9F, (filter&3)<<5);
404 }
405
406 static void pms_killcolour(short colour)
407 {
408 if(decoder==PHILIPS2)
409 {
410 pms_i2c_andor(0x8A, 0x08, 0x07, (colour&0x1F)<<3);
411 pms_i2c_andor(0x8A, 0x09, 0x07, (colour&0x1F)<<3);
412 }
413 else if(decoder==PHILIPS1)
414 {
415 pms_i2c_andor(0x42, 0x08, 0x07, (colour&0x1F)<<3);
416 pms_i2c_andor(0x42, 0x09, 0x07, (colour&0x1F)<<3);
417 }
418 }
419
420 static void pms_chromagain(short chroma)
421 {
422 if(decoder==PHILIPS2)
423 {
424 pms_i2c_write(0x8A, 0x11, chroma);
425 }
426 else if(decoder==PHILIPS1)
427 {
428 pms_i2c_write(0x42, 0x11, chroma);
429 }
430 }
431
432
433 static void pms_spacialcompl(short data)
434 {
435 mvv_write(0x3B, data);
436 }
437
438 static void pms_spacialcomph(short data)
439 {
440 mvv_write(0x3A, data);
441 }
442
443 static void pms_vstart(short start)
444 {
445 mvv_write(0x16, start);
446 mvv_write(0x17, (start>>8)&0x01);
447 }
448
449 #endif
450
451 static void pms_secamcross(short cross)
452 {
453 if(decoder==PHILIPS2)
454 pms_i2c_andor(0x8A, 0x0F, 0xDF, (cross&1)<<5);
455 else if(decoder==PHILIPS1)
456 pms_i2c_andor(0x42, 0x0F, 0xDF, (cross&1)<<5);
457 }
458
459
460 static void pms_swsense(short sense)
461 {
462 if(decoder==PHILIPS2)
463 {
464 pms_i2c_write(0x8A, 0x0A, sense);
465 pms_i2c_write(0x8A, 0x0B, sense);
466 }
467 else if(decoder==PHILIPS1)
468 {
469 pms_i2c_write(0x42, 0x0A, sense);
470 pms_i2c_write(0x42, 0x0B, sense);
471 }
472 }
473
474
475 static void pms_framerate(short frr)
476 {
477 int fps=(standard==1)?30:25;
478 if(frr==0)
479 return;
480 fps=fps/frr;
481 mvv_write(0x14,0x80|fps);
482 mvv_write(0x15,1);
483 }
484
485 static void pms_vert(u8 deciden, u8 decinum)
486 {
487 mvv_write(0x1C, deciden); /* Denominator */
488 mvv_write(0x1D, decinum); /* Numerator */
489 }
490
491 /*
492 * Turn 16bit ratios into best small ratio the chipset can grok
493 */
494
495 static void pms_vertdeci(unsigned short decinum, unsigned short deciden)
496 {
497 /* Knock it down by /5 once */
498 if(decinum%5==0)
499 {
500 deciden/=5;
501 decinum/=5;
502 }
503 /*
504 * 3's
505 */
506 while(decinum%3==0 && deciden%3==0)
507 {
508 deciden/=3;
509 decinum/=3;
510 }
511 /*
512 * 2's
513 */
514 while(decinum%2==0 && deciden%2==0)
515 {
516 decinum/=2;
517 deciden/=2;
518 }
519 /*
520 * Fudgyify
521 */
522 while(deciden>32)
523 {
524 deciden/=2;
525 decinum=(decinum+1)/2;
526 }
527 if(deciden==32)
528 deciden--;
529 pms_vert(deciden,decinum);
530 }
531
532 static void pms_horzdeci(short decinum, short deciden)
533 {
534 if(decinum<=512)
535 {
536 if(decinum%5==0)
537 {
538 decinum/=5;
539 deciden/=5;
540 }
541 }
542 else
543 {
544 decinum=512;
545 deciden=640; /* 768 would be ideal */
546 }
547
548 while(((decinum|deciden)&1)==0)
549 {
550 decinum>>=1;
551 deciden>>=1;
552 }
553 while(deciden>32)
554 {
555 deciden>>=1;
556 decinum=(decinum+1)>>1;
557 }
558 if(deciden==32)
559 deciden--;
560
561 mvv_write(0x24, 0x80|deciden);
562 mvv_write(0x25, decinum);
563 }
564
565 static void pms_resolution(short width, short height)
566 {
567 int fg_height;
568
569 fg_height=height;
570 if(fg_height>280)
571 fg_height=280;
572
573 mvv_write(0x18, fg_height);
574 mvv_write(0x19, fg_height>>8);
575
576 if(standard==1)
577 {
578 mvv_write(0x1A, 0xFC);
579 mvv_write(0x1B, 0x00);
580 if(height>fg_height)
581 pms_vertdeci(240,240);
582 else
583 pms_vertdeci(fg_height,240);
584 }
585 else
586 {
587 mvv_write(0x1A, 0x1A);
588 mvv_write(0x1B, 0x01);
589 if(fg_height>256)
590 pms_vertdeci(270,270);
591 else
592 pms_vertdeci(fg_height, 270);
593 }
594 mvv_write(0x12,0);
595 mvv_write(0x13, MVVMEMORYWIDTH);
596 mvv_write(0x42, 0x00);
597 mvv_write(0x43, 0x00);
598 mvv_write(0x44, MVVMEMORYWIDTH);
599
600 mvv_write(0x22, width+8);
601 mvv_write(0x23, (width+8)>> 8);
602
603 if(standard==1)
604 pms_horzdeci(width,640);
605 else
606 pms_horzdeci(width+8, 768);
607
608 mvv_write(0x30, mvv_read(0x30)&0xFE);
609 mvv_write(0x08, mvv_read(0x08)|0x01);
610 mvv_write(0x01, mvv_read(0x01)&0xFD);
611 mvv_write(0x32, 0x00);
612 mvv_write(0x33, MVVMEMORYWIDTH);
613 }
614
615
616 /*
617 * Set Input
618 */
619
620 static void pms_vcrinput(short input)
621 {
622 if(decoder==PHILIPS2)
623 pms_i2c_andor(0x8A,0x0D,0x7F,(input&1)<<7);
624 else if(decoder==PHILIPS1)
625 pms_i2c_andor(0x42,0x0D,0x7F,(input&1)<<7);
626 }
627
628
629 static int pms_capture(struct pms_device *dev, char __user *buf, int rgb555, int count)
630 {
631 int y;
632 int dw = 2*dev->width;
633
634 char tmp[dw+32]; /* using a temp buffer is faster than direct */
635 int cnt = 0;
636 int len=0;
637 unsigned char r8 = 0x5; /* value for reg8 */
638
639 if (rgb555)
640 r8 |= 0x20; /* else use untranslated rgb = 565 */
641 mvv_write(0x08,r8); /* capture rgb555/565, init DRAM, PC enable */
642
643 /* printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
644
645 for (y = 0; y < dev->height; y++ )
646 {
647 writeb(0, mem); /* synchronisiert neue Zeile */
648
649 /*
650 * This is in truth a fifo, be very careful as if you
651 * forgot this odd things will occur 8)
652 */
653
654 memcpy_fromio(tmp, mem, dw+32); /* discard 16 word */
655 cnt -= dev->height;
656 while (cnt <= 0)
657 {
658 /*
659 * Don't copy too far
660 */
661 int dt=dw;
662 if(dt+len>count)
663 dt=count-len;
664 cnt += dev->height;
665 if (copy_to_user(buf, tmp+32, dt))
666 return len ? len : -EFAULT;
667 buf += dt;
668 len += dt;
669 }
670 }
671 return len;
672 }
673
674
675 /*
676 * Video4linux interfacing
677 */
678
679 static int pms_do_ioctl(struct inode *inode, struct file *file,
680 unsigned int cmd, void *arg)
681 {
682 struct video_device *dev = video_devdata(file);
683 struct pms_device *pd=(struct pms_device *)dev;
684
685 switch(cmd)
686 {
687 case VIDIOCGCAP:
688 {
689 struct video_capability *b = arg;
690 strcpy(b->name, "Mediavision PMS");
691 b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
692 b->channels = 4;
693 b->audios = 0;
694 b->maxwidth = 640;
695 b->maxheight = 480;
696 b->minwidth = 16;
697 b->minheight = 16;
698 return 0;
699 }
700 case VIDIOCGCHAN:
701 {
702 struct video_channel *v = arg;
703 if(v->channel<0 || v->channel>3)
704 return -EINVAL;
705 v->flags=0;
706 v->tuners=1;
707 /* Good question.. its composite or SVHS so.. */
708 v->type = VIDEO_TYPE_CAMERA;
709 switch(v->channel)
710 {
711 case 0:
712 strcpy(v->name, "Composite");break;
713 case 1:
714 strcpy(v->name, "SVideo");break;
715 case 2:
716 strcpy(v->name, "Composite(VCR)");break;
717 case 3:
718 strcpy(v->name, "SVideo(VCR)");break;
719 }
720 return 0;
721 }
722 case VIDIOCSCHAN:
723 {
724 struct video_channel *v = arg;
725 if(v->channel<0 || v->channel>3)
726 return -EINVAL;
727 down(&pd->lock);
728 pms_videosource(v->channel&1);
729 pms_vcrinput(v->channel>>1);
730 up(&pd->lock);
731 return 0;
732 }
733 case VIDIOCGTUNER:
734 {
735 struct video_tuner *v = arg;
736 if(v->tuner)
737 return -EINVAL;
738 strcpy(v->name, "Format");
739 v->rangelow=0;
740 v->rangehigh=0;
741 v->flags= VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
742 switch(standard)
743 {
744 case 0:
745 v->mode = VIDEO_MODE_AUTO;
746 break;
747 case 1:
748 v->mode = VIDEO_MODE_NTSC;
749 break;
750 case 2:
751 v->mode = VIDEO_MODE_PAL;
752 break;
753 case 3:
754 v->mode = VIDEO_MODE_SECAM;
755 break;
756 }
757 return 0;
758 }
759 case VIDIOCSTUNER:
760 {
761 struct video_tuner *v = arg;
762 if(v->tuner)
763 return -EINVAL;
764 down(&pd->lock);
765 switch(v->mode)
766 {
767 case VIDEO_MODE_AUTO:
768 pms_framerate(25);
769 pms_secamcross(0);
770 pms_format(0);
771 break;
772 case VIDEO_MODE_NTSC:
773 pms_framerate(30);
774 pms_secamcross(0);
775 pms_format(1);
776 break;
777 case VIDEO_MODE_PAL:
778 pms_framerate(25);
779 pms_secamcross(0);
780 pms_format(2);
781 break;
782 case VIDEO_MODE_SECAM:
783 pms_framerate(25);
784 pms_secamcross(1);
785 pms_format(2);
786 break;
787 default:
788 up(&pd->lock);
789 return -EINVAL;
790 }
791 up(&pd->lock);
792 return 0;
793 }
794 case VIDIOCGPICT:
795 {
796 struct video_picture *p = arg;
797 *p = pd->picture;
798 return 0;
799 }
800 case VIDIOCSPICT:
801 {
802 struct video_picture *p = arg;
803 if(!((p->palette==VIDEO_PALETTE_RGB565 && p->depth==16)
804 ||(p->palette==VIDEO_PALETTE_RGB555 && p->depth==15)))
805 return -EINVAL;
806 pd->picture= *p;
807
808 /*
809 * Now load the card.
810 */
811
812 down(&pd->lock);
813 pms_brightness(p->brightness>>8);
814 pms_hue(p->hue>>8);
815 pms_colour(p->colour>>8);
816 pms_contrast(p->contrast>>8);
817 up(&pd->lock);
818 return 0;
819 }
820 case VIDIOCSWIN:
821 {
822 struct video_window *vw = arg;
823 if(vw->flags)
824 return -EINVAL;
825 if(vw->clipcount)
826 return -EINVAL;
827 if(vw->height<16||vw->height>480)
828 return -EINVAL;
829 if(vw->width<16||vw->width>640)
830 return -EINVAL;
831 pd->width=vw->width;
832 pd->height=vw->height;
833 down(&pd->lock);
834 pms_resolution(pd->width, pd->height);
835 up(&pd->lock); /* Ok we figured out what to use from our wide choice */
836 return 0;
837 }
838 case VIDIOCGWIN:
839 {
840 struct video_window *vw = arg;
841 memset(vw,0,sizeof(*vw));
842 vw->width=pd->width;
843 vw->height=pd->height;
844 return 0;
845 }
846 case VIDIOCKEY:
847 return 0;
848 case VIDIOCCAPTURE:
849 case VIDIOCGFBUF:
850 case VIDIOCSFBUF:
851 case VIDIOCGFREQ:
852 case VIDIOCSFREQ:
853 case VIDIOCGAUDIO:
854 case VIDIOCSAUDIO:
855 return -EINVAL;
856 default:
857 return -ENOIOCTLCMD;
858 }
859 return 0;
860 }
861
862 static int pms_ioctl(struct inode *inode, struct file *file,
863 unsigned int cmd, unsigned long arg)
864 {
865 return video_usercopy(inode, file, cmd, arg, pms_do_ioctl);
866 }
867
868 static ssize_t pms_read(struct file *file, char __user *buf,
869 size_t count, loff_t *ppos)
870 {
871 struct video_device *v = video_devdata(file);
872 struct pms_device *pd=(struct pms_device *)v;
873 int len;
874
875 down(&pd->lock);
876 len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count);
877 up(&pd->lock);
878 return len;
879 }
880
881 static struct file_operations pms_fops = {
882 .owner = THIS_MODULE,
883 .open = video_exclusive_open,
884 .release = video_exclusive_release,
885 .ioctl = pms_ioctl,
886 .read = pms_read,
887 .llseek = no_llseek,
888 };
889
890 static struct video_device pms_template=
891 {
892 .owner = THIS_MODULE,
893 .name = "Mediavision PMS",
894 .type = VID_TYPE_CAPTURE,
895 .hardware = VID_HARDWARE_PMS,
896 .fops = &pms_fops,
897 };
898
899 static struct pms_device pms_device;
900
901
902 /*
903 * Probe for and initialise the Mediavision PMS
904 */
905
906 static int init_mediavision(void)
907 {
908 int id;
909 int idec, decst;
910 int i;
911
912 unsigned char i2c_defs[]={
913 0x4C,0x30,0x00,0xE8,
914 0xB6,0xE2,0x00,0x00,
915 0xFF,0xFF,0x00,0x00,
916 0x00,0x00,0x78,0x98,
917 0x00,0x00,0x00,0x00,
918 0x34,0x0A,0xF4,0xCE,
919 0xE4
920 };
921
922 mem = ioremap(mem_base, 0x800);
923 if (!mem)
924 return -ENOMEM;
925
926 if (!request_region(0x9A01, 1, "Mediavision PMS config"))
927 {
928 printk(KERN_WARNING "mediavision: unable to detect: 0x9A01 in use.\n");
929 iounmap(mem);
930 return -EBUSY;
931 }
932 if (!request_region(io_port, 3, "Mediavision PMS"))
933 {
934 printk(KERN_WARNING "mediavision: I/O port %d in use.\n", io_port);
935 release_region(0x9A01, 1);
936 iounmap(mem);
937 return -EBUSY;
938 }
939 outb(0xB8, 0x9A01); /* Unlock */
940 outb(io_port>>4, 0x9A01); /* Set IO port */
941
942
943 id=mvv_read(3);
944 decst=pms_i2c_stat(0x43);
945
946 if(decst!=-1)
947 idec=2;
948 else if(pms_i2c_stat(0xb9)!=-1)
949 idec=3;
950 else if(pms_i2c_stat(0x8b)!=-1)
951 idec=1;
952 else
953 idec=0;
954
955 printk(KERN_INFO "PMS type is %d\n", idec);
956 if(idec == 0) {
957 release_region(io_port, 3);
958 release_region(0x9A01, 1);
959 iounmap(mem);
960 return -ENODEV;
961 }
962
963 /*
964 * Ok we have a PMS of some sort
965 */
966
967 mvv_write(0x04, mem_base>>12); /* Set the memory area */
968
969 /* Ok now load the defaults */
970
971 for(i=0;i<0x19;i++)
972 {
973 if(i2c_defs[i]==0xFF)
974 pms_i2c_andor(0x8A, i, 0x07,0x00);
975 else
976 pms_i2c_write(0x8A, i, i2c_defs[i]);
977 }
978
979 pms_i2c_write(0xB8,0x00,0x12);
980 pms_i2c_write(0xB8,0x04,0x00);
981 pms_i2c_write(0xB8,0x07,0x00);
982 pms_i2c_write(0xB8,0x08,0x00);
983 pms_i2c_write(0xB8,0x09,0xFF);
984 pms_i2c_write(0xB8,0x0A,0x00);
985 pms_i2c_write(0xB8,0x0B,0x10);
986 pms_i2c_write(0xB8,0x10,0x03);
987
988 mvv_write(0x01, 0x00);
989 mvv_write(0x05, 0xA0);
990 mvv_write(0x08, 0x25);
991 mvv_write(0x09, 0x00);
992 mvv_write(0x0A, 0x20|MVVMEMORYWIDTH);
993
994 mvv_write(0x10, 0x02);
995 mvv_write(0x1E, 0x0C);
996 mvv_write(0x1F, 0x03);
997 mvv_write(0x26, 0x06);
998
999 mvv_write(0x2B, 0x00);
1000 mvv_write(0x2C, 0x20);
1001 mvv_write(0x2D, 0x00);
1002 mvv_write(0x2F, 0x70);
1003 mvv_write(0x32, 0x00);
1004 mvv_write(0x33, MVVMEMORYWIDTH);
1005 mvv_write(0x34, 0x00);
1006 mvv_write(0x35, 0x00);
1007 mvv_write(0x3A, 0x80);
1008 mvv_write(0x3B, 0x10);
1009 mvv_write(0x20, 0x00);
1010 mvv_write(0x21, 0x00);
1011 mvv_write(0x30, 0x22);
1012 return 0;
1013 }
1014
1015 /*
1016 * Initialization and module stuff
1017 */
1018
1019 static int __init init_pms_cards(void)
1020 {
1021 printk(KERN_INFO "Mediavision Pro Movie Studio driver 0.02\n");
1022
1023 data_port = io_port +1;
1024
1025 if(init_mediavision())
1026 {
1027 printk(KERN_INFO "Board not found.\n");
1028 return -ENODEV;
1029 }
1030 memcpy(&pms_device, &pms_template, sizeof(pms_template));
1031 init_MUTEX(&pms_device.lock);
1032 pms_device.height=240;
1033 pms_device.width=320;
1034 pms_swsense(75);
1035 pms_resolution(320,240);
1036 return video_register_device((struct video_device *)&pms_device, VFL_TYPE_GRABBER, video_nr);
1037 }
1038
1039 module_param(io_port, int, 0);
1040 module_param(mem_base, int, 0);
1041 module_param(video_nr, int, 0);
1042 MODULE_LICENSE("GPL");
1043
1044
1045 static void __exit shutdown_mediavision(void)
1046 {
1047 release_region(io_port,3);
1048 release_region(0x9A01, 1);
1049 }
1050
1051 static void __exit cleanup_pms_module(void)
1052 {
1053 shutdown_mediavision();
1054 video_unregister_device((struct video_device *)&pms_device);
1055 iounmap(mem);
1056 }
1057
1058 module_init(init_pms_cards);
1059 module_exit(cleanup_pms_module);
1060
kernel source for telekom puls (alcatel/mediatek)