git.oblomov.eu Git - linux-2.6/blob - 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 #ifndef MODULE
1023 static int enable;
1024 module_param(enable, int, 0);
1025 #endif
1026
1027 static int __init init_pms_cards(void)
1028 {
1029         printk(KERN_INFO "Mediavision Pro Movie Studio driver 0.02\n");
1030
1031 #ifndef MODULE
1032         if (!enable) {
1033                 printk(KERN_INFO "PMS: not enabled, use pms.enable=1 to "
1034                                  "probe\n");
1035                 return -ENODEV;
1036         }
1037 #endif
1038
1039         data_port = io_port +1;
1040
1041         if(init_mediavision())
1042         {
1043                 printk(KERN_INFO "Board not found.\n");
1044                 return -ENODEV;
1045         }
1046         memcpy(&pms_device, &pms_template, sizeof(pms_template));
1047         mutex_init(&pms_device.lock);
1048         pms_device.height=240;
1049         pms_device.width=320;
1050         pms_swsense(75);
1051         pms_resolution(320,240);
1052         return video_register_device((struct video_device *)&pms_device, VFL_TYPE_GRABBER, video_nr);
1053 }
1054
1055 module_param(io_port, int, 0);
1056 module_param(mem_base, int, 0);
1057 module_param(video_nr, int, 0);
1058 MODULE_LICENSE("GPL");
1059
1060
1061 static void __exit shutdown_mediavision(void)
1062 {
1063         release_region(io_port,3);
1064         release_region(0x9A01, 1);
1065 }
1066
1067 static void __exit cleanup_pms_module(void)
1068 {
1069         shutdown_mediavision();
1070         video_unregister_device((struct video_device *)&pms_device);
1071         iounmap(mem);
1072 }
1073
1074 module_init(init_pms_cards);
1075 module_exit(cleanup_pms_module);
1076