[PATCH] remove many unneeded #includes of sched.h
[linux-2.6.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/videodev.h>
32 #include <media/v4l2-common.h>
33 #include <linux/mutex.h>
34
35 #include <asm/uaccess.h>
36
37
38 #define MOTOROLA        1
39 #define PHILIPS2        2
40 #define PHILIPS1        3
41 #define MVVMEMORYWIDTH  0x40            /* 512 bytes */
42
43 struct pms_device
44 {
45         struct video_device v;
46         struct video_picture picture;
47         int height;
48         int width;
49         struct mutex lock;
50 };
51
52 struct i2c_info
53 {
54         u8 slave;
55         u8 sub;
56         u8 data;
57         u8 hits;
58 };
59
60 static int i2c_count            = 0;
61 static struct i2c_info i2cinfo[64];
62
63 static int decoder              = PHILIPS2;
64 static int standard             = 0;    /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
65
66 /*
67  *      I/O ports and Shared Memory
68  */
69
70 static int io_port              =       0x250;
71 static int data_port            =       0x251;
72 static int mem_base             =       0xC8000;
73 static void __iomem *mem;
74 static int video_nr             =       -1;
75
76
77
78 static inline void mvv_write(u8 index, u8 value)
79 {
80         outw(index|(value<<8), io_port);
81 }
82
83 static inline u8 mvv_read(u8 index)
84 {
85         outb(index, io_port);
86         return inb(data_port);
87 }
88
89 static int pms_i2c_stat(u8 slave)
90 {
91         int counter;
92         int i;
93
94         outb(0x28, io_port);
95
96         counter=0;
97         while((inb(data_port)&0x01)==0)
98                 if(counter++==256)
99                         break;
100
101         while((inb(data_port)&0x01)!=0)
102                 if(counter++==256)
103                         break;
104
105         outb(slave, io_port);
106
107         counter=0;
108         while((inb(data_port)&0x01)==0)
109                 if(counter++==256)
110                         break;
111
112         while((inb(data_port)&0x01)!=0)
113                 if(counter++==256)
114                         break;
115
116         for(i=0;i<12;i++)
117         {
118                 char st=inb(data_port);
119                 if((st&2)!=0)
120                         return -1;
121                 if((st&1)==0)
122                         break;
123         }
124         outb(0x29, io_port);
125         return inb(data_port);
126 }
127
128 static int pms_i2c_write(u16 slave, u16 sub, u16 data)
129 {
130         int skip=0;
131         int count;
132         int i;
133
134         for(i=0;i<i2c_count;i++)
135         {
136                 if((i2cinfo[i].slave==slave) &&
137                    (i2cinfo[i].sub == sub))
138                 {
139                         if(i2cinfo[i].data==data)
140                                 skip=1;
141                         i2cinfo[i].data=data;
142                         i=i2c_count+1;
143                 }
144         }
145
146         if(i==i2c_count && i2c_count<64)
147         {
148                 i2cinfo[i2c_count].slave=slave;
149                 i2cinfo[i2c_count].sub=sub;
150                 i2cinfo[i2c_count].data=data;
151                 i2c_count++;
152         }
153
154         if(skip)
155                 return 0;
156
157         mvv_write(0x29, sub);
158         mvv_write(0x2A, data);
159         mvv_write(0x28, slave);
160
161         outb(0x28, io_port);
162
163         count=0;
164         while((inb(data_port)&1)==0)
165                 if(count>255)
166                         break;
167         while((inb(data_port)&1)!=0)
168                 if(count>255)
169                         break;
170
171         count=inb(data_port);
172
173         if(count&2)
174                 return -1;
175         return count;
176 }
177
178 static int pms_i2c_read(int slave, int sub)
179 {
180         int i=0;
181         for(i=0;i<i2c_count;i++)
182         {
183                 if(i2cinfo[i].slave==slave && i2cinfo[i].sub==sub)
184                         return i2cinfo[i].data;
185         }
186         return 0;
187 }
188
189
190 static void pms_i2c_andor(int slave, int sub, int and, int or)
191 {
192         u8 tmp;
193
194         tmp=pms_i2c_read(slave, sub);
195         tmp = (tmp&and)|or;
196         pms_i2c_write(slave, sub, tmp);
197 }
198
199 /*
200  *      Control functions
201  */
202
203
204 static void pms_videosource(short source)
205 {
206         mvv_write(0x2E, source?0x31:0x30);
207 }
208
209 static void pms_hue(short hue)
210 {
211         switch(decoder)
212         {
213                 case MOTOROLA:
214                         pms_i2c_write(0x8A, 0x00, hue);
215                         break;
216                 case PHILIPS2:
217                         pms_i2c_write(0x8A, 0x07, hue);
218                         break;
219                 case PHILIPS1:
220                         pms_i2c_write(0x42, 0x07, hue);
221                         break;
222         }
223 }
224
225 static void pms_colour(short colour)
226 {
227         switch(decoder)
228         {
229                 case MOTOROLA:
230                         pms_i2c_write(0x8A, 0x00, colour);
231                         break;
232                 case PHILIPS1:
233                         pms_i2c_write(0x42, 0x12, colour);
234                         break;
235         }
236 }
237
238
239 static void pms_contrast(short contrast)
240 {
241         switch(decoder)
242         {
243                 case MOTOROLA:
244                         pms_i2c_write(0x8A, 0x00, contrast);
245                         break;
246                 case PHILIPS1:
247                         pms_i2c_write(0x42, 0x13, contrast);
248                         break;
249         }
250 }
251
252 static void pms_brightness(short brightness)
253 {
254         switch(decoder)
255         {
256                 case MOTOROLA:
257                         pms_i2c_write(0x8A, 0x00, brightness);
258                         pms_i2c_write(0x8A, 0x00, brightness);
259                         pms_i2c_write(0x8A, 0x00, brightness);
260                         break;
261                 case PHILIPS1:
262                         pms_i2c_write(0x42, 0x19, brightness);
263                         break;
264         }
265 }
266
267
268 static void pms_format(short format)
269 {
270         int target;
271         standard = format;
272
273         if(decoder==PHILIPS1)
274                 target=0x42;
275         else if(decoder==PHILIPS2)
276                 target=0x8A;
277         else
278                 return;
279
280         switch(format)
281         {
282                 case 0: /* Auto */
283                         pms_i2c_andor(target, 0x0D, 0xFE,0x00);
284                         pms_i2c_andor(target, 0x0F, 0x3F,0x80);
285                         break;
286                 case 1: /* NTSC */
287                         pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
288                         pms_i2c_andor(target, 0x0F, 0x3F, 0x40);
289                         break;
290                 case 2: /* PAL */
291                         pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
292                         pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
293                         break;
294                 case 3: /* SECAM */
295                         pms_i2c_andor(target, 0x0D, 0xFE, 0x01);
296                         pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
297                         break;
298         }
299 }
300
301 #ifdef FOR_FUTURE_EXPANSION
302
303 /*
304  *      These features of the PMS card are not currently exposes. They
305  *      could become a private v4l ioctl for PMSCONFIG or somesuch if
306  *      people need it. We also don't yet use the PMS interrupt.
307  */
308
309 static void pms_hstart(short start)
310 {
311         switch(decoder)
312         {
313                 case PHILIPS1:
314                         pms_i2c_write(0x8A, 0x05, start);
315                         pms_i2c_write(0x8A, 0x18, start);
316                         break;
317                 case PHILIPS2:
318                         pms_i2c_write(0x42, 0x05, start);
319                         pms_i2c_write(0x42, 0x18, start);
320                         break;
321         }
322 }
323
324 /*
325  *      Bandpass filters
326  */
327
328 static void pms_bandpass(short pass)
329 {
330         if(decoder==PHILIPS2)
331                 pms_i2c_andor(0x8A, 0x06, 0xCF, (pass&0x03)<<4);
332         else if(decoder==PHILIPS1)
333                 pms_i2c_andor(0x42, 0x06, 0xCF, (pass&0x03)<<4);
334 }
335
336 static void pms_antisnow(short snow)
337 {
338         if(decoder==PHILIPS2)
339                 pms_i2c_andor(0x8A, 0x06, 0xF3, (snow&0x03)<<2);
340         else if(decoder==PHILIPS1)
341                 pms_i2c_andor(0x42, 0x06, 0xF3, (snow&0x03)<<2);
342 }
343
344 static void pms_sharpness(short sharp)
345 {
346         if(decoder==PHILIPS2)
347                 pms_i2c_andor(0x8A, 0x06, 0xFC, sharp&0x03);
348         else if(decoder==PHILIPS1)
349                 pms_i2c_andor(0x42, 0x06, 0xFC, sharp&0x03);
350 }
351
352 static void pms_chromaagc(short agc)
353 {
354         if(decoder==PHILIPS2)
355                 pms_i2c_andor(0x8A, 0x0C, 0x9F, (agc&0x03)<<5);
356         else if(decoder==PHILIPS1)
357                 pms_i2c_andor(0x42, 0x0C, 0x9F, (agc&0x03)<<5);
358 }
359
360 static void pms_vertnoise(short noise)
361 {
362         if(decoder==PHILIPS2)
363                 pms_i2c_andor(0x8A, 0x10, 0xFC, noise&3);
364         else if(decoder==PHILIPS1)
365                 pms_i2c_andor(0x42, 0x10, 0xFC, noise&3);
366 }
367
368 static void pms_forcecolour(short colour)
369 {
370         if(decoder==PHILIPS2)
371                 pms_i2c_andor(0x8A, 0x0C, 0x7F, (colour&1)<<7);
372         else if(decoder==PHILIPS1)
373                 pms_i2c_andor(0x42, 0x0C, 0x7, (colour&1)<<7);
374 }
375
376 static void pms_antigamma(short gamma)
377 {
378         if(decoder==PHILIPS2)
379                 pms_i2c_andor(0xB8, 0x00, 0x7F, (gamma&1)<<7);
380         else if(decoder==PHILIPS1)
381                 pms_i2c_andor(0x42, 0x20, 0x7, (gamma&1)<<7);
382 }
383
384 static void pms_prefilter(short filter)
385 {
386         if(decoder==PHILIPS2)
387                 pms_i2c_andor(0x8A, 0x06, 0xBF, (filter&1)<<6);
388         else if(decoder==PHILIPS1)
389                 pms_i2c_andor(0x42, 0x06, 0xBF, (filter&1)<<6);
390 }
391
392 static void pms_hfilter(short filter)
393 {
394         if(decoder==PHILIPS2)
395                 pms_i2c_andor(0xB8, 0x04, 0x1F, (filter&7)<<5);
396         else if(decoder==PHILIPS1)
397                 pms_i2c_andor(0x42, 0x24, 0x1F, (filter&7)<<5);
398 }
399
400 static void pms_vfilter(short filter)
401 {
402         if(decoder==PHILIPS2)
403                 pms_i2c_andor(0xB8, 0x08, 0x9F, (filter&3)<<5);
404         else if(decoder==PHILIPS1)
405                 pms_i2c_andor(0x42, 0x28, 0x9F, (filter&3)<<5);
406 }
407
408 static void pms_killcolour(short colour)
409 {
410         if(decoder==PHILIPS2)
411         {
412                 pms_i2c_andor(0x8A, 0x08, 0x07, (colour&0x1F)<<3);
413                 pms_i2c_andor(0x8A, 0x09, 0x07, (colour&0x1F)<<3);
414         }
415         else if(decoder==PHILIPS1)
416         {
417                 pms_i2c_andor(0x42, 0x08, 0x07, (colour&0x1F)<<3);
418                 pms_i2c_andor(0x42, 0x09, 0x07, (colour&0x1F)<<3);
419         }
420 }
421
422 static void pms_chromagain(short chroma)
423 {
424         if(decoder==PHILIPS2)
425         {
426                 pms_i2c_write(0x8A, 0x11, chroma);
427         }
428         else if(decoder==PHILIPS1)
429         {
430                 pms_i2c_write(0x42, 0x11, chroma);
431         }
432 }
433
434
435 static void pms_spacialcompl(short data)
436 {
437         mvv_write(0x3B, data);
438 }
439
440 static void pms_spacialcomph(short data)
441 {
442         mvv_write(0x3A, data);
443 }
444
445 static void pms_vstart(short start)
446 {
447         mvv_write(0x16, start);
448         mvv_write(0x17, (start>>8)&0x01);
449 }
450
451 #endif
452
453 static void pms_secamcross(short cross)
454 {
455         if(decoder==PHILIPS2)
456                 pms_i2c_andor(0x8A, 0x0F, 0xDF, (cross&1)<<5);
457         else if(decoder==PHILIPS1)
458                 pms_i2c_andor(0x42, 0x0F, 0xDF, (cross&1)<<5);
459 }
460
461
462 static void pms_swsense(short sense)
463 {
464         if(decoder==PHILIPS2)
465         {
466                 pms_i2c_write(0x8A, 0x0A, sense);
467                 pms_i2c_write(0x8A, 0x0B, sense);
468         }
469         else if(decoder==PHILIPS1)
470         {
471                 pms_i2c_write(0x42, 0x0A, sense);
472                 pms_i2c_write(0x42, 0x0B, sense);
473         }
474 }
475
476
477 static void pms_framerate(short frr)
478 {
479         int fps=(standard==1)?30:25;
480         if(frr==0)
481                 return;
482         fps=fps/frr;
483         mvv_write(0x14,0x80|fps);
484         mvv_write(0x15,1);
485 }
486
487 static void pms_vert(u8 deciden, u8 decinum)
488 {
489         mvv_write(0x1C, deciden);       /* Denominator */
490         mvv_write(0x1D, decinum);       /* Numerator */
491 }
492
493 /*
494  *      Turn 16bit ratios into best small ratio the chipset can grok
495  */
496
497 static void pms_vertdeci(unsigned short decinum, unsigned short deciden)
498 {
499         /* Knock it down by /5 once */
500         if(decinum%5==0)
501         {
502                 deciden/=5;
503                 decinum/=5;
504         }
505         /*
506          *      3's
507          */
508         while(decinum%3==0 && deciden%3==0)
509         {
510                 deciden/=3;
511                 decinum/=3;
512         }
513         /*
514          *      2's
515          */
516         while(decinum%2==0 && deciden%2==0)
517         {
518                 decinum/=2;
519                 deciden/=2;
520         }
521         /*
522          *      Fudgyify
523          */
524         while(deciden>32)
525         {
526                 deciden/=2;
527                 decinum=(decinum+1)/2;
528         }
529         if(deciden==32)
530                 deciden--;
531         pms_vert(deciden,decinum);
532 }
533
534 static void pms_horzdeci(short decinum, short deciden)
535 {
536         if(decinum<=512)
537         {
538                 if(decinum%5==0)
539                 {
540                         decinum/=5;
541                         deciden/=5;
542                 }
543         }
544         else
545         {
546                 decinum=512;
547                 deciden=640;    /* 768 would be ideal */
548         }
549
550         while(((decinum|deciden)&1)==0)
551         {
552                 decinum>>=1;
553                 deciden>>=1;
554         }
555         while(deciden>32)
556         {
557                 deciden>>=1;
558                 decinum=(decinum+1)>>1;
559         }
560         if(deciden==32)
561                 deciden--;
562
563         mvv_write(0x24, 0x80|deciden);
564         mvv_write(0x25, decinum);
565 }
566
567 static void pms_resolution(short width, short height)
568 {
569         int fg_height;
570
571         fg_height=height;
572         if(fg_height>280)
573                 fg_height=280;
574
575         mvv_write(0x18, fg_height);
576         mvv_write(0x19, fg_height>>8);
577
578         if(standard==1)
579         {
580                 mvv_write(0x1A, 0xFC);
581                 mvv_write(0x1B, 0x00);
582                 if(height>fg_height)
583                         pms_vertdeci(240,240);
584                 else
585                         pms_vertdeci(fg_height,240);
586         }
587         else
588         {
589                 mvv_write(0x1A, 0x1A);
590                 mvv_write(0x1B, 0x01);
591                 if(fg_height>256)
592                         pms_vertdeci(270,270);
593                 else
594                         pms_vertdeci(fg_height, 270);
595         }
596         mvv_write(0x12,0);
597         mvv_write(0x13, MVVMEMORYWIDTH);
598         mvv_write(0x42, 0x00);
599         mvv_write(0x43, 0x00);
600         mvv_write(0x44, MVVMEMORYWIDTH);
601
602         mvv_write(0x22, width+8);
603         mvv_write(0x23, (width+8)>> 8);
604
605         if(standard==1)
606                 pms_horzdeci(width,640);
607         else
608                 pms_horzdeci(width+8, 768);
609
610         mvv_write(0x30, mvv_read(0x30)&0xFE);
611         mvv_write(0x08, mvv_read(0x08)|0x01);
612         mvv_write(0x01, mvv_read(0x01)&0xFD);
613         mvv_write(0x32, 0x00);
614         mvv_write(0x33, MVVMEMORYWIDTH);
615 }
616
617
618 /*
619  *      Set Input
620  */
621
622 static void pms_vcrinput(short input)
623 {
624         if(decoder==PHILIPS2)
625                 pms_i2c_andor(0x8A,0x0D,0x7F,(input&1)<<7);
626         else if(decoder==PHILIPS1)
627                 pms_i2c_andor(0x42,0x0D,0x7F,(input&1)<<7);
628 }
629
630
631 static int pms_capture(struct pms_device *dev, char __user *buf, int rgb555, int count)
632 {
633         int y;
634         int dw = 2*dev->width;
635
636         char tmp[dw+32]; /* using a temp buffer is faster than direct  */
637         int cnt = 0;
638         int len=0;
639         unsigned char r8 = 0x5;  /* value for reg8  */
640
641         if (rgb555)
642                 r8 |= 0x20; /* else use untranslated rgb = 565 */
643         mvv_write(0x08,r8); /* capture rgb555/565, init DRAM, PC enable */
644
645 /*      printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
646
647         for (y = 0; y < dev->height; y++ )
648         {
649                 writeb(0, mem);  /* synchronisiert neue Zeile */
650
651                 /*
652                  *      This is in truth a fifo, be very careful as if you
653                  *      forgot this odd things will occur 8)
654                  */
655
656                 memcpy_fromio(tmp, mem, dw+32); /* discard 16 word   */
657                 cnt -= dev->height;
658                 while (cnt <= 0)
659                 {
660                         /*
661                          *      Don't copy too far
662                          */
663                         int dt=dw;
664                         if(dt+len>count)
665                                 dt=count-len;
666                         cnt += dev->height;
667                         if (copy_to_user(buf, tmp+32, dt))
668                                 return len ? len : -EFAULT;
669                         buf += dt;
670                         len += dt;
671                 }
672         }
673         return len;
674 }
675
676
677 /*
678  *      Video4linux interfacing
679  */
680
681 static int pms_do_ioctl(struct inode *inode, struct file *file,
682                         unsigned int cmd, void *arg)
683 {
684         struct video_device *dev = video_devdata(file);
685         struct pms_device *pd=(struct pms_device *)dev;
686
687         switch(cmd)
688         {
689                 case VIDIOCGCAP:
690                 {
691                         struct video_capability *b = arg;
692                         strcpy(b->name, "Mediavision PMS");
693                         b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
694                         b->channels = 4;
695                         b->audios = 0;
696                         b->maxwidth = 640;
697                         b->maxheight = 480;
698                         b->minwidth = 16;
699                         b->minheight = 16;
700                         return 0;
701                 }
702                 case VIDIOCGCHAN:
703                 {
704                         struct video_channel *v = arg;
705                         if(v->channel<0 || v->channel>3)
706                                 return -EINVAL;
707                         v->flags=0;
708                         v->tuners=1;
709                         /* Good question.. its composite or SVHS so.. */
710                         v->type = VIDEO_TYPE_CAMERA;
711                         switch(v->channel)
712                         {
713                                 case 0:
714                                         strcpy(v->name, "Composite");break;
715                                 case 1:
716                                         strcpy(v->name, "SVideo");break;
717                                 case 2:
718                                         strcpy(v->name, "Composite(VCR)");break;
719                                 case 3:
720                                         strcpy(v->name, "SVideo(VCR)");break;
721                         }
722                         return 0;
723                 }
724                 case VIDIOCSCHAN:
725                 {
726                         struct video_channel *v = arg;
727                         if(v->channel<0 || v->channel>3)
728                                 return -EINVAL;
729                         mutex_lock(&pd->lock);
730                         pms_videosource(v->channel&1);
731                         pms_vcrinput(v->channel>>1);
732                         mutex_unlock(&pd->lock);
733                         return 0;
734                 }
735                 case VIDIOCGTUNER:
736                 {
737                         struct video_tuner *v = arg;
738                         if(v->tuner)
739                                 return -EINVAL;
740                         strcpy(v->name, "Format");
741                         v->rangelow=0;
742                         v->rangehigh=0;
743                         v->flags= VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
744                         switch(standard)
745                         {
746                                 case 0:
747                                         v->mode = VIDEO_MODE_AUTO;
748                                         break;
749                                 case 1:
750                                         v->mode = VIDEO_MODE_NTSC;
751                                         break;
752                                 case 2:
753                                         v->mode = VIDEO_MODE_PAL;
754                                         break;
755                                 case 3:
756                                         v->mode = VIDEO_MODE_SECAM;
757                                         break;
758                         }
759                         return 0;
760                 }
761                 case VIDIOCSTUNER:
762                 {
763                         struct video_tuner *v = arg;
764                         if(v->tuner)
765                                 return -EINVAL;
766                         mutex_lock(&pd->lock);
767                         switch(v->mode)
768                         {
769                                 case VIDEO_MODE_AUTO:
770                                         pms_framerate(25);
771                                         pms_secamcross(0);
772                                         pms_format(0);
773                                         break;
774                                 case VIDEO_MODE_NTSC:
775                                         pms_framerate(30);
776                                         pms_secamcross(0);
777                                         pms_format(1);
778                                         break;
779                                 case VIDEO_MODE_PAL:
780                                         pms_framerate(25);
781                                         pms_secamcross(0);
782                                         pms_format(2);
783                                         break;
784                                 case VIDEO_MODE_SECAM:
785                                         pms_framerate(25);
786                                         pms_secamcross(1);
787                                         pms_format(2);
788                                         break;
789                                 default:
790                                         mutex_unlock(&pd->lock);
791                                         return -EINVAL;
792                         }
793                         mutex_unlock(&pd->lock);
794                         return 0;
795                 }
796                 case VIDIOCGPICT:
797                 {
798                         struct video_picture *p = arg;
799                         *p = pd->picture;
800                         return 0;
801                 }
802                 case VIDIOCSPICT:
803                 {
804                         struct video_picture *p = arg;
805                         if(!((p->palette==VIDEO_PALETTE_RGB565 && p->depth==16)
806                             ||(p->palette==VIDEO_PALETTE_RGB555 && p->depth==15)))
807                                 return -EINVAL;
808                         pd->picture= *p;
809
810                         /*
811                          *      Now load the card.
812                          */
813
814                         mutex_lock(&pd->lock);
815                         pms_brightness(p->brightness>>8);
816                         pms_hue(p->hue>>8);
817                         pms_colour(p->colour>>8);
818                         pms_contrast(p->contrast>>8);
819                         mutex_unlock(&pd->lock);
820                         return 0;
821                 }
822                 case VIDIOCSWIN:
823                 {
824                         struct video_window *vw = arg;
825                         if(vw->flags)
826                                 return -EINVAL;
827                         if(vw->clipcount)
828                                 return -EINVAL;
829                         if(vw->height<16||vw->height>480)
830                                 return -EINVAL;
831                         if(vw->width<16||vw->width>640)
832                                 return -EINVAL;
833                         pd->width=vw->width;
834                         pd->height=vw->height;
835                         mutex_lock(&pd->lock);
836                         pms_resolution(pd->width, pd->height);
837                         mutex_unlock(&pd->lock);                        /* Ok we figured out what to use from our wide choice */
838                         return 0;
839                 }
840                 case VIDIOCGWIN:
841                 {
842                         struct video_window *vw = arg;
843                         memset(vw,0,sizeof(*vw));
844                         vw->width=pd->width;
845                         vw->height=pd->height;
846                         return 0;
847                 }
848                 case VIDIOCKEY:
849                         return 0;
850                 case VIDIOCCAPTURE:
851                 case VIDIOCGFBUF:
852                 case VIDIOCSFBUF:
853                 case VIDIOCGFREQ:
854                 case VIDIOCSFREQ:
855                 case VIDIOCGAUDIO:
856                 case VIDIOCSAUDIO:
857                         return -EINVAL;
858                 default:
859                         return -ENOIOCTLCMD;
860         }
861         return 0;
862 }
863
864 static int pms_ioctl(struct inode *inode, struct file *file,
865                      unsigned int cmd, unsigned long arg)
866 {
867         return video_usercopy(inode, file, cmd, arg, pms_do_ioctl);
868 }
869
870 static ssize_t pms_read(struct file *file, char __user *buf,
871                     size_t count, loff_t *ppos)
872 {
873         struct video_device *v = video_devdata(file);
874         struct pms_device *pd=(struct pms_device *)v;
875         int len;
876
877         mutex_lock(&pd->lock);
878         len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count);
879         mutex_unlock(&pd->lock);
880         return len;
881 }
882
883 static const struct file_operations pms_fops = {
884         .owner          = THIS_MODULE,
885         .open           = video_exclusive_open,
886         .release        = video_exclusive_release,
887         .ioctl          = pms_ioctl,
888         .compat_ioctl   = v4l_compat_ioctl32,
889         .read           = pms_read,
890         .llseek         = no_llseek,
891 };
892
893 static struct video_device pms_template=
894 {
895         .owner          = THIS_MODULE,
896         .name           = "Mediavision PMS",
897         .type           = VID_TYPE_CAPTURE,
898         .hardware       = VID_HARDWARE_PMS,
899         .fops           = &pms_fops,
900 };
901
902 static struct pms_device pms_device;
903
904
905 /*
906  *      Probe for and initialise the Mediavision PMS
907  */
908
909 static int init_mediavision(void)
910 {
911         int id;
912         int idec, decst;
913         int i;
914
915         unsigned char i2c_defs[]={
916                 0x4C,0x30,0x00,0xE8,
917                 0xB6,0xE2,0x00,0x00,
918                 0xFF,0xFF,0x00,0x00,
919                 0x00,0x00,0x78,0x98,
920                 0x00,0x00,0x00,0x00,
921                 0x34,0x0A,0xF4,0xCE,
922                 0xE4
923         };
924
925         mem = ioremap(mem_base, 0x800);
926         if (!mem)
927                 return -ENOMEM;
928
929         if (!request_region(0x9A01, 1, "Mediavision PMS config"))
930         {
931                 printk(KERN_WARNING "mediavision: unable to detect: 0x9A01 in use.\n");
932                 iounmap(mem);
933                 return -EBUSY;
934         }
935         if (!request_region(io_port, 3, "Mediavision PMS"))
936         {
937                 printk(KERN_WARNING "mediavision: I/O port %d in use.\n", io_port);
938                 release_region(0x9A01, 1);
939                 iounmap(mem);
940                 return -EBUSY;
941         }
942         outb(0xB8, 0x9A01);             /* Unlock */
943         outb(io_port>>4, 0x9A01);       /* Set IO port */
944
945
946         id=mvv_read(3);
947         decst=pms_i2c_stat(0x43);
948
949         if(decst!=-1)
950                 idec=2;
951         else if(pms_i2c_stat(0xb9)!=-1)
952                 idec=3;
953         else if(pms_i2c_stat(0x8b)!=-1)
954                 idec=1;
955         else
956                 idec=0;
957
958         printk(KERN_INFO "PMS type is %d\n", idec);
959         if(idec == 0) {
960                 release_region(io_port, 3);
961                 release_region(0x9A01, 1);
962                 iounmap(mem);
963                 return -ENODEV;
964         }
965
966         /*
967          *      Ok we have a PMS of some sort
968          */
969
970         mvv_write(0x04, mem_base>>12);  /* Set the memory area */
971
972         /* Ok now load the defaults */
973
974         for(i=0;i<0x19;i++)
975         {
976                 if(i2c_defs[i]==0xFF)
977                         pms_i2c_andor(0x8A, i, 0x07,0x00);
978                 else
979                         pms_i2c_write(0x8A, i, i2c_defs[i]);
980         }
981
982         pms_i2c_write(0xB8,0x00,0x12);
983         pms_i2c_write(0xB8,0x04,0x00);
984         pms_i2c_write(0xB8,0x07,0x00);
985         pms_i2c_write(0xB8,0x08,0x00);
986         pms_i2c_write(0xB8,0x09,0xFF);
987         pms_i2c_write(0xB8,0x0A,0x00);
988         pms_i2c_write(0xB8,0x0B,0x10);
989         pms_i2c_write(0xB8,0x10,0x03);
990
991         mvv_write(0x01, 0x00);
992         mvv_write(0x05, 0xA0);
993         mvv_write(0x08, 0x25);
994         mvv_write(0x09, 0x00);
995         mvv_write(0x0A, 0x20|MVVMEMORYWIDTH);
996
997         mvv_write(0x10, 0x02);
998         mvv_write(0x1E, 0x0C);
999         mvv_write(0x1F, 0x03);
1000         mvv_write(0x26, 0x06);
1001
1002         mvv_write(0x2B, 0x00);
1003         mvv_write(0x2C, 0x20);
1004         mvv_write(0x2D, 0x00);
1005         mvv_write(0x2F, 0x70);
1006         mvv_write(0x32, 0x00);
1007         mvv_write(0x33, MVVMEMORYWIDTH);
1008         mvv_write(0x34, 0x00);
1009         mvv_write(0x35, 0x00);
1010         mvv_write(0x3A, 0x80);
1011         mvv_write(0x3B, 0x10);
1012         mvv_write(0x20, 0x00);
1013         mvv_write(0x21, 0x00);
1014         mvv_write(0x30, 0x22);
1015         return 0;
1016 }
1017
1018 /*
1019  *      Initialization and module stuff
1020  */
1021
1022 static int __init init_pms_cards(void)
1023 {
1024         printk(KERN_INFO "Mediavision Pro Movie Studio driver 0.02\n");
1025
1026         data_port = io_port +1;
1027
1028         if(init_mediavision())
1029         {
1030                 printk(KERN_INFO "Board not found.\n");
1031                 return -ENODEV;
1032         }
1033         memcpy(&pms_device, &pms_template, sizeof(pms_template));
1034         mutex_init(&pms_device.lock);
1035         pms_device.height=240;
1036         pms_device.width=320;
1037         pms_swsense(75);
1038         pms_resolution(320,240);
1039         return video_register_device((struct video_device *)&pms_device, VFL_TYPE_GRABBER, video_nr);
1040 }
1041
1042 module_param(io_port, int, 0);
1043 module_param(mem_base, int, 0);
1044 module_param(video_nr, int, 0);
1045 MODULE_LICENSE("GPL");
1046
1047
1048 static void __exit shutdown_mediavision(void)
1049 {
1050         release_region(io_port,3);
1051         release_region(0x9A01, 1);
1052 }
1053
1054 static void __exit cleanup_pms_module(void)
1055 {
1056         shutdown_mediavision();
1057         video_unregister_device((struct video_device *)&pms_device);
1058         iounmap(mem);
1059 }
1060
1061 module_init(init_pms_cards);
1062 module_exit(cleanup_pms_module);
1063