V4L/DVB (8523): v4l2-dev: remove unused type and type2 field from video_device
[linux-3.10.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 <media/v4l2-ioctl.h>
34 #include <linux/mutex.h>
35
36 #include <asm/uaccess.h>
37
38
39 #define MOTOROLA        1
40 #define PHILIPS2        2
41 #define PHILIPS1        3
42 #define MVVMEMORYWIDTH  0x40            /* 512 bytes */
43
44 struct pms_device
45 {
46         struct video_device v;
47         struct video_picture picture;
48         int height;
49         int width;
50         struct mutex lock;
51 };
52
53 struct i2c_info
54 {
55         u8 slave;
56         u8 sub;
57         u8 data;
58         u8 hits;
59 };
60
61 static int i2c_count;
62 static struct i2c_info i2cinfo[64];
63
64 static int decoder              = PHILIPS2;
65 static int standard;    /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
66
67 /*
68  *      I/O ports and Shared Memory
69  */
70
71 static int io_port              =       0x250;
72 static int data_port            =       0x251;
73 static int mem_base             =       0xC8000;
74 static void __iomem *mem;
75 static int video_nr             =       -1;
76
77
78
79 static inline void mvv_write(u8 index, u8 value)
80 {
81         outw(index|(value<<8), io_port);
82 }
83
84 static inline u8 mvv_read(u8 index)
85 {
86         outb(index, io_port);
87         return inb(data_port);
88 }
89
90 static int pms_i2c_stat(u8 slave)
91 {
92         int counter;
93         int i;
94
95         outb(0x28, io_port);
96
97         counter=0;
98         while((inb(data_port)&0x01)==0)
99                 if(counter++==256)
100                         break;
101
102         while((inb(data_port)&0x01)!=0)
103                 if(counter++==256)
104                         break;
105
106         outb(slave, io_port);
107
108         counter=0;
109         while((inb(data_port)&0x01)==0)
110                 if(counter++==256)
111                         break;
112
113         while((inb(data_port)&0x01)!=0)
114                 if(counter++==256)
115                         break;
116
117         for(i=0;i<12;i++)
118         {
119                 char st=inb(data_port);
120                 if((st&2)!=0)
121                         return -1;
122                 if((st&1)==0)
123                         break;
124         }
125         outb(0x29, io_port);
126         return inb(data_port);
127 }
128
129 static int pms_i2c_write(u16 slave, u16 sub, u16 data)
130 {
131         int skip=0;
132         int count;
133         int i;
134
135         for(i=0;i<i2c_count;i++)
136         {
137                 if((i2cinfo[i].slave==slave) &&
138                    (i2cinfo[i].sub == sub))
139                 {
140                         if(i2cinfo[i].data==data)
141                                 skip=1;
142                         i2cinfo[i].data=data;
143                         i=i2c_count+1;
144                 }
145         }
146
147         if(i==i2c_count && i2c_count<64)
148         {
149                 i2cinfo[i2c_count].slave=slave;
150                 i2cinfo[i2c_count].sub=sub;
151                 i2cinfo[i2c_count].data=data;
152                 i2c_count++;
153         }
154
155         if(skip)
156                 return 0;
157
158         mvv_write(0x29, sub);
159         mvv_write(0x2A, data);
160         mvv_write(0x28, slave);
161
162         outb(0x28, io_port);
163
164         count=0;
165         while((inb(data_port)&1)==0)
166                 if(count>255)
167                         break;
168         while((inb(data_port)&1)!=0)
169                 if(count>255)
170                         break;
171
172         count=inb(data_port);
173
174         if(count&2)
175                 return -1;
176         return count;
177 }
178
179 static int pms_i2c_read(int slave, int sub)
180 {
181         int i=0;
182         for(i=0;i<i2c_count;i++)
183         {
184                 if(i2cinfo[i].slave==slave && i2cinfo[i].sub==sub)
185                         return i2cinfo[i].data;
186         }
187         return 0;
188 }
189
190
191 static void pms_i2c_andor(int slave, int sub, int and, int or)
192 {
193         u8 tmp;
194
195         tmp=pms_i2c_read(slave, sub);
196         tmp = (tmp&and)|or;
197         pms_i2c_write(slave, sub, tmp);
198 }
199
200 /*
201  *      Control functions
202  */
203
204
205 static void pms_videosource(short source)
206 {
207         mvv_write(0x2E, source?0x31:0x30);
208 }
209
210 static void pms_hue(short hue)
211 {
212         switch(decoder)
213         {
214                 case MOTOROLA:
215                         pms_i2c_write(0x8A, 0x00, hue);
216                         break;
217                 case PHILIPS2:
218                         pms_i2c_write(0x8A, 0x07, hue);
219                         break;
220                 case PHILIPS1:
221                         pms_i2c_write(0x42, 0x07, hue);
222                         break;
223         }
224 }
225
226 static void pms_colour(short colour)
227 {
228         switch(decoder)
229         {
230                 case MOTOROLA:
231                         pms_i2c_write(0x8A, 0x00, colour);
232                         break;
233                 case PHILIPS1:
234                         pms_i2c_write(0x42, 0x12, colour);
235                         break;
236         }
237 }
238
239
240 static void pms_contrast(short contrast)
241 {
242         switch(decoder)
243         {
244                 case MOTOROLA:
245                         pms_i2c_write(0x8A, 0x00, contrast);
246                         break;
247                 case PHILIPS1:
248                         pms_i2c_write(0x42, 0x13, contrast);
249                         break;
250         }
251 }
252
253 static void pms_brightness(short brightness)
254 {
255         switch(decoder)
256         {
257                 case MOTOROLA:
258                         pms_i2c_write(0x8A, 0x00, brightness);
259                         pms_i2c_write(0x8A, 0x00, brightness);
260                         pms_i2c_write(0x8A, 0x00, brightness);
261                         break;
262                 case PHILIPS1:
263                         pms_i2c_write(0x42, 0x19, brightness);
264                         break;
265         }
266 }
267
268
269 static void pms_format(short format)
270 {
271         int target;
272         standard = format;
273
274         if(decoder==PHILIPS1)
275                 target=0x42;
276         else if(decoder==PHILIPS2)
277                 target=0x8A;
278         else
279                 return;
280
281         switch(format)
282         {
283                 case 0: /* Auto */
284                         pms_i2c_andor(target, 0x0D, 0xFE,0x00);
285                         pms_i2c_andor(target, 0x0F, 0x3F,0x80);
286                         break;
287                 case 1: /* NTSC */
288                         pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
289                         pms_i2c_andor(target, 0x0F, 0x3F, 0x40);
290                         break;
291                 case 2: /* PAL */
292                         pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
293                         pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
294                         break;
295                 case 3: /* SECAM */
296                         pms_i2c_andor(target, 0x0D, 0xFE, 0x01);
297                         pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
298                         break;
299         }
300 }
301
302 #ifdef FOR_FUTURE_EXPANSION
303
304 /*
305  *      These features of the PMS card are not currently exposes. They
306  *      could become a private v4l ioctl for PMSCONFIG or somesuch if
307  *      people need it. We also don't yet use the PMS interrupt.
308  */
309
310 static void pms_hstart(short start)
311 {
312         switch(decoder)
313         {
314                 case PHILIPS1:
315                         pms_i2c_write(0x8A, 0x05, start);
316                         pms_i2c_write(0x8A, 0x18, start);
317                         break;
318                 case PHILIPS2:
319                         pms_i2c_write(0x42, 0x05, start);
320                         pms_i2c_write(0x42, 0x18, start);
321                         break;
322         }
323 }
324
325 /*
326  *      Bandpass filters
327  */
328
329 static void pms_bandpass(short pass)
330 {
331         if(decoder==PHILIPS2)
332                 pms_i2c_andor(0x8A, 0x06, 0xCF, (pass&0x03)<<4);
333         else if(decoder==PHILIPS1)
334                 pms_i2c_andor(0x42, 0x06, 0xCF, (pass&0x03)<<4);
335 }
336
337 static void pms_antisnow(short snow)
338 {
339         if(decoder==PHILIPS2)
340                 pms_i2c_andor(0x8A, 0x06, 0xF3, (snow&0x03)<<2);
341         else if(decoder==PHILIPS1)
342                 pms_i2c_andor(0x42, 0x06, 0xF3, (snow&0x03)<<2);
343 }
344
345 static void pms_sharpness(short sharp)
346 {
347         if(decoder==PHILIPS2)
348                 pms_i2c_andor(0x8A, 0x06, 0xFC, sharp&0x03);
349         else if(decoder==PHILIPS1)
350                 pms_i2c_andor(0x42, 0x06, 0xFC, sharp&0x03);
351 }
352
353 static void pms_chromaagc(short agc)
354 {
355         if(decoder==PHILIPS2)
356                 pms_i2c_andor(0x8A, 0x0C, 0x9F, (agc&0x03)<<5);
357         else if(decoder==PHILIPS1)
358                 pms_i2c_andor(0x42, 0x0C, 0x9F, (agc&0x03)<<5);
359 }
360
361 static void pms_vertnoise(short noise)
362 {
363         if(decoder==PHILIPS2)
364                 pms_i2c_andor(0x8A, 0x10, 0xFC, noise&3);
365         else if(decoder==PHILIPS1)
366                 pms_i2c_andor(0x42, 0x10, 0xFC, noise&3);
367 }
368
369 static void pms_forcecolour(short colour)
370 {
371         if(decoder==PHILIPS2)
372                 pms_i2c_andor(0x8A, 0x0C, 0x7F, (colour&1)<<7);
373         else if(decoder==PHILIPS1)
374                 pms_i2c_andor(0x42, 0x0C, 0x7, (colour&1)<<7);
375 }
376
377 static void pms_antigamma(short gamma)
378 {
379         if(decoder==PHILIPS2)
380                 pms_i2c_andor(0xB8, 0x00, 0x7F, (gamma&1)<<7);
381         else if(decoder==PHILIPS1)
382                 pms_i2c_andor(0x42, 0x20, 0x7, (gamma&1)<<7);
383 }
384
385 static void pms_prefilter(short filter)
386 {
387         if(decoder==PHILIPS2)
388                 pms_i2c_andor(0x8A, 0x06, 0xBF, (filter&1)<<6);
389         else if(decoder==PHILIPS1)
390                 pms_i2c_andor(0x42, 0x06, 0xBF, (filter&1)<<6);
391 }
392
393 static void pms_hfilter(short filter)
394 {
395         if(decoder==PHILIPS2)
396                 pms_i2c_andor(0xB8, 0x04, 0x1F, (filter&7)<<5);
397         else if(decoder==PHILIPS1)
398                 pms_i2c_andor(0x42, 0x24, 0x1F, (filter&7)<<5);
399 }
400
401 static void pms_vfilter(short filter)
402 {
403         if(decoder==PHILIPS2)
404                 pms_i2c_andor(0xB8, 0x08, 0x9F, (filter&3)<<5);
405         else if(decoder==PHILIPS1)
406                 pms_i2c_andor(0x42, 0x28, 0x9F, (filter&3)<<5);
407 }
408
409 static void pms_killcolour(short colour)
410 {
411         if(decoder==PHILIPS2)
412         {
413                 pms_i2c_andor(0x8A, 0x08, 0x07, (colour&0x1F)<<3);
414                 pms_i2c_andor(0x8A, 0x09, 0x07, (colour&0x1F)<<3);
415         }
416         else if(decoder==PHILIPS1)
417         {
418                 pms_i2c_andor(0x42, 0x08, 0x07, (colour&0x1F)<<3);
419                 pms_i2c_andor(0x42, 0x09, 0x07, (colour&0x1F)<<3);
420         }
421 }
422
423 static void pms_chromagain(short chroma)
424 {
425         if(decoder==PHILIPS2)
426         {
427                 pms_i2c_write(0x8A, 0x11, chroma);
428         }
429         else if(decoder==PHILIPS1)
430         {
431                 pms_i2c_write(0x42, 0x11, chroma);
432         }
433 }
434
435
436 static void pms_spacialcompl(short data)
437 {
438         mvv_write(0x3B, data);
439 }
440
441 static void pms_spacialcomph(short data)
442 {
443         mvv_write(0x3A, data);
444 }
445
446 static void pms_vstart(short start)
447 {
448         mvv_write(0x16, start);
449         mvv_write(0x17, (start>>8)&0x01);
450 }
451
452 #endif
453
454 static void pms_secamcross(short cross)
455 {
456         if(decoder==PHILIPS2)
457                 pms_i2c_andor(0x8A, 0x0F, 0xDF, (cross&1)<<5);
458         else if(decoder==PHILIPS1)
459                 pms_i2c_andor(0x42, 0x0F, 0xDF, (cross&1)<<5);
460 }
461
462
463 static void pms_swsense(short sense)
464 {
465         if(decoder==PHILIPS2)
466         {
467                 pms_i2c_write(0x8A, 0x0A, sense);
468                 pms_i2c_write(0x8A, 0x0B, sense);
469         }
470         else if(decoder==PHILIPS1)
471         {
472                 pms_i2c_write(0x42, 0x0A, sense);
473                 pms_i2c_write(0x42, 0x0B, sense);
474         }
475 }
476
477
478 static void pms_framerate(short frr)
479 {
480         int fps=(standard==1)?30:25;
481         if(frr==0)
482                 return;
483         fps=fps/frr;
484         mvv_write(0x14,0x80|fps);
485         mvv_write(0x15,1);
486 }
487
488 static void pms_vert(u8 deciden, u8 decinum)
489 {
490         mvv_write(0x1C, deciden);       /* Denominator */
491         mvv_write(0x1D, decinum);       /* Numerator */
492 }
493
494 /*
495  *      Turn 16bit ratios into best small ratio the chipset can grok
496  */
497
498 static void pms_vertdeci(unsigned short decinum, unsigned short deciden)
499 {
500         /* Knock it down by /5 once */
501         if(decinum%5==0)
502         {
503                 deciden/=5;
504                 decinum/=5;
505         }
506         /*
507          *      3's
508          */
509         while(decinum%3==0 && deciden%3==0)
510         {
511                 deciden/=3;
512                 decinum/=3;
513         }
514         /*
515          *      2's
516          */
517         while(decinum%2==0 && deciden%2==0)
518         {
519                 decinum/=2;
520                 deciden/=2;
521         }
522         /*
523          *      Fudgyify
524          */
525         while(deciden>32)
526         {
527                 deciden/=2;
528                 decinum=(decinum+1)/2;
529         }
530         if(deciden==32)
531                 deciden--;
532         pms_vert(deciden,decinum);
533 }
534
535 static void pms_horzdeci(short decinum, short deciden)
536 {
537         if(decinum<=512)
538         {
539                 if(decinum%5==0)
540                 {
541                         decinum/=5;
542                         deciden/=5;
543                 }
544         }
545         else
546         {
547                 decinum=512;
548                 deciden=640;    /* 768 would be ideal */
549         }
550
551         while(((decinum|deciden)&1)==0)
552         {
553                 decinum>>=1;
554                 deciden>>=1;
555         }
556         while(deciden>32)
557         {
558                 deciden>>=1;
559                 decinum=(decinum+1)>>1;
560         }
561         if(deciden==32)
562                 deciden--;
563
564         mvv_write(0x24, 0x80|deciden);
565         mvv_write(0x25, decinum);
566 }
567
568 static void pms_resolution(short width, short height)
569 {
570         int fg_height;
571
572         fg_height=height;
573         if(fg_height>280)
574                 fg_height=280;
575
576         mvv_write(0x18, fg_height);
577         mvv_write(0x19, fg_height>>8);
578
579         if(standard==1)
580         {
581                 mvv_write(0x1A, 0xFC);
582                 mvv_write(0x1B, 0x00);
583                 if(height>fg_height)
584                         pms_vertdeci(240,240);
585                 else
586                         pms_vertdeci(fg_height,240);
587         }
588         else
589         {
590                 mvv_write(0x1A, 0x1A);
591                 mvv_write(0x1B, 0x01);
592                 if(fg_height>256)
593                         pms_vertdeci(270,270);
594                 else
595                         pms_vertdeci(fg_height, 270);
596         }
597         mvv_write(0x12,0);
598         mvv_write(0x13, MVVMEMORYWIDTH);
599         mvv_write(0x42, 0x00);
600         mvv_write(0x43, 0x00);
601         mvv_write(0x44, MVVMEMORYWIDTH);
602
603         mvv_write(0x22, width+8);
604         mvv_write(0x23, (width+8)>> 8);
605
606         if(standard==1)
607                 pms_horzdeci(width,640);
608         else
609                 pms_horzdeci(width+8, 768);
610
611         mvv_write(0x30, mvv_read(0x30)&0xFE);
612         mvv_write(0x08, mvv_read(0x08)|0x01);
613         mvv_write(0x01, mvv_read(0x01)&0xFD);
614         mvv_write(0x32, 0x00);
615         mvv_write(0x33, MVVMEMORYWIDTH);
616 }
617
618
619 /*
620  *      Set Input
621  */
622
623 static void pms_vcrinput(short input)
624 {
625         if(decoder==PHILIPS2)
626                 pms_i2c_andor(0x8A,0x0D,0x7F,(input&1)<<7);
627         else if(decoder==PHILIPS1)
628                 pms_i2c_andor(0x42,0x0D,0x7F,(input&1)<<7);
629 }
630
631
632 static int pms_capture(struct pms_device *dev, char __user *buf, int rgb555, int count)
633 {
634         int y;
635         int dw = 2*dev->width;
636
637         char tmp[dw+32]; /* using a temp buffer is faster than direct  */
638         int cnt = 0;
639         int len=0;
640         unsigned char r8 = 0x5;  /* value for reg8  */
641
642         if (rgb555)
643                 r8 |= 0x20; /* else use untranslated rgb = 565 */
644         mvv_write(0x08,r8); /* capture rgb555/565, init DRAM, PC enable */
645
646 /*      printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
647
648         for (y = 0; y < dev->height; y++ )
649         {
650                 writeb(0, mem);  /* synchronisiert neue Zeile */
651
652                 /*
653                  *      This is in truth a fifo, be very careful as if you
654                  *      forgot this odd things will occur 8)
655                  */
656
657                 memcpy_fromio(tmp, mem, dw+32); /* discard 16 word   */
658                 cnt -= dev->height;
659                 while (cnt <= 0)
660                 {
661                         /*
662                          *      Don't copy too far
663                          */
664                         int dt=dw;
665                         if(dt+len>count)
666                                 dt=count-len;
667                         cnt += dev->height;
668                         if (copy_to_user(buf, tmp+32, dt))
669                                 return len ? len : -EFAULT;
670                         buf += dt;
671                         len += dt;
672                 }
673         }
674         return len;
675 }
676
677
678 /*
679  *      Video4linux interfacing
680  */
681
682 static int pms_do_ioctl(struct inode *inode, struct file *file,
683                         unsigned int cmd, void *arg)
684 {
685         struct video_device *dev = video_devdata(file);
686         struct pms_device *pd=(struct pms_device *)dev;
687
688         switch(cmd)
689         {
690                 case VIDIOCGCAP:
691                 {
692                         struct video_capability *b = arg;
693                         strcpy(b->name, "Mediavision PMS");
694                         b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
695                         b->channels = 4;
696                         b->audios = 0;
697                         b->maxwidth = 640;
698                         b->maxheight = 480;
699                         b->minwidth = 16;
700                         b->minheight = 16;
701                         return 0;
702                 }
703                 case VIDIOCGCHAN:
704                 {
705                         struct video_channel *v = arg;
706                         if(v->channel<0 || v->channel>3)
707                                 return -EINVAL;
708                         v->flags=0;
709                         v->tuners=1;
710                         /* Good question.. its composite or SVHS so.. */
711                         v->type = VIDEO_TYPE_CAMERA;
712                         switch(v->channel)
713                         {
714                                 case 0:
715                                         strcpy(v->name, "Composite");break;
716                                 case 1:
717                                         strcpy(v->name, "SVideo");break;
718                                 case 2:
719                                         strcpy(v->name, "Composite(VCR)");break;
720                                 case 3:
721                                         strcpy(v->name, "SVideo(VCR)");break;
722                         }
723                         return 0;
724                 }
725                 case VIDIOCSCHAN:
726                 {
727                         struct video_channel *v = arg;
728                         if(v->channel<0 || v->channel>3)
729                                 return -EINVAL;
730                         mutex_lock(&pd->lock);
731                         pms_videosource(v->channel&1);
732                         pms_vcrinput(v->channel>>1);
733                         mutex_unlock(&pd->lock);
734                         return 0;
735                 }
736                 case VIDIOCGTUNER:
737                 {
738                         struct video_tuner *v = arg;
739                         if(v->tuner)
740                                 return -EINVAL;
741                         strcpy(v->name, "Format");
742                         v->rangelow=0;
743                         v->rangehigh=0;
744                         v->flags= VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
745                         switch(standard)
746                         {
747                                 case 0:
748                                         v->mode = VIDEO_MODE_AUTO;
749                                         break;
750                                 case 1:
751                                         v->mode = VIDEO_MODE_NTSC;
752                                         break;
753                                 case 2:
754                                         v->mode = VIDEO_MODE_PAL;
755                                         break;
756                                 case 3:
757                                         v->mode = VIDEO_MODE_SECAM;
758                                         break;
759                         }
760                         return 0;
761                 }
762                 case VIDIOCSTUNER:
763                 {
764                         struct video_tuner *v = arg;
765                         if(v->tuner)
766                                 return -EINVAL;
767                         mutex_lock(&pd->lock);
768                         switch(v->mode)
769                         {
770                                 case VIDEO_MODE_AUTO:
771                                         pms_framerate(25);
772                                         pms_secamcross(0);
773                                         pms_format(0);
774                                         break;
775                                 case VIDEO_MODE_NTSC:
776                                         pms_framerate(30);
777                                         pms_secamcross(0);
778                                         pms_format(1);
779                                         break;
780                                 case VIDEO_MODE_PAL:
781                                         pms_framerate(25);
782                                         pms_secamcross(0);
783                                         pms_format(2);
784                                         break;
785                                 case VIDEO_MODE_SECAM:
786                                         pms_framerate(25);
787                                         pms_secamcross(1);
788                                         pms_format(2);
789                                         break;
790                                 default:
791                                         mutex_unlock(&pd->lock);
792                                         return -EINVAL;
793                         }
794                         mutex_unlock(&pd->lock);
795                         return 0;
796                 }
797                 case VIDIOCGPICT:
798                 {
799                         struct video_picture *p = arg;
800                         *p = pd->picture;
801                         return 0;
802                 }
803                 case VIDIOCSPICT:
804                 {
805                         struct video_picture *p = arg;
806                         if(!((p->palette==VIDEO_PALETTE_RGB565 && p->depth==16)
807                             ||(p->palette==VIDEO_PALETTE_RGB555 && p->depth==15)))
808                                 return -EINVAL;
809                         pd->picture= *p;
810
811                         /*
812                          *      Now load the card.
813                          */
814
815                         mutex_lock(&pd->lock);
816                         pms_brightness(p->brightness>>8);
817                         pms_hue(p->hue>>8);
818                         pms_colour(p->colour>>8);
819                         pms_contrast(p->contrast>>8);
820                         mutex_unlock(&pd->lock);
821                         return 0;
822                 }
823                 case VIDIOCSWIN:
824                 {
825                         struct video_window *vw = arg;
826                         if(vw->flags)
827                                 return -EINVAL;
828                         if(vw->clipcount)
829                                 return -EINVAL;
830                         if(vw->height<16||vw->height>480)
831                                 return -EINVAL;
832                         if(vw->width<16||vw->width>640)
833                                 return -EINVAL;
834                         pd->width=vw->width;
835                         pd->height=vw->height;
836                         mutex_lock(&pd->lock);
837                         pms_resolution(pd->width, pd->height);
838                         mutex_unlock(&pd->lock);                        /* Ok we figured out what to use from our wide choice */
839                         return 0;
840                 }
841                 case VIDIOCGWIN:
842                 {
843                         struct video_window *vw = arg;
844                         memset(vw,0,sizeof(*vw));
845                         vw->width=pd->width;
846                         vw->height=pd->height;
847                         return 0;
848                 }
849                 case VIDIOCKEY:
850                         return 0;
851                 case VIDIOCCAPTURE:
852                 case VIDIOCGFBUF:
853                 case VIDIOCSFBUF:
854                 case VIDIOCGFREQ:
855                 case VIDIOCSFREQ:
856                 case VIDIOCGAUDIO:
857                 case VIDIOCSAUDIO:
858                         return -EINVAL;
859                 default:
860                         return -ENOIOCTLCMD;
861         }
862         return 0;
863 }
864
865 static int pms_ioctl(struct inode *inode, struct file *file,
866                      unsigned int cmd, unsigned long arg)
867 {
868         return video_usercopy(inode, file, cmd, arg, pms_do_ioctl);
869 }
870
871 static ssize_t pms_read(struct file *file, char __user *buf,
872                     size_t count, loff_t *ppos)
873 {
874         struct video_device *v = video_devdata(file);
875         struct pms_device *pd=(struct pms_device *)v;
876         int len;
877
878         mutex_lock(&pd->lock);
879         len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count);
880         mutex_unlock(&pd->lock);
881         return len;
882 }
883
884 static const struct file_operations pms_fops = {
885         .owner          = THIS_MODULE,
886         .open           = video_exclusive_open,
887         .release        = video_exclusive_release,
888         .ioctl          = pms_ioctl,
889 #ifdef CONFIG_COMPAT
890         .compat_ioctl   = v4l_compat_ioctl32,
891 #endif
892         .read           = pms_read,
893         .llseek         = no_llseek,
894 };
895
896 static struct video_device pms_template=
897 {
898         .name           = "Mediavision 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