git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/stradis.c

   1 /*
   2  * stradis.c - stradis 4:2:2 mpeg decoder driver
   3  *
   4  * Stradis 4:2:2 MPEG-2 Decoder Driver
   5  * Copyright (C) 1999 Nathan Laredo <laredo@gnu.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/delay.h>
  24 #include <linux/errno.h>
  25 #include <linux/fs.h>
  26 #include <linux/kernel.h>
  27 #include <linux/major.h>
  28 #include <linux/slab.h>
  29 #include <linux/mm.h>
  30 #include <linux/init.h>
  31 #include <linux/poll.h>
  32 #include <linux/pci.h>
  33 #include <linux/signal.h>
  34 #include <asm/io.h>
  35 #include <linux/ioport.h>
  36 #include <asm/pgtable.h>
  37 #include <asm/page.h>
  38 #include <linux/sched.h>
  39 #include <asm/types.h>
  40 #include <linux/types.h>
  41 #include <linux/interrupt.h>
  42 #include <asm/uaccess.h>
  43 #include <linux/vmalloc.h>
  44 #include <linux/videodev.h>
  45 #include <media/v4l2-common.h>
  46 #include <media/v4l2-ioctl.h>
  47
  48 #include "saa7146.h"
  49 #include "saa7146reg.h"
  50 #include "ibmmpeg2.h"
  51 #include "saa7121.h"
  52 #include "cs8420.h"
  53
  54 #define DEBUG(x)                /* debug driver */
  55 #undef  IDEBUG                  /* debug irq handler */
  56 #undef  MDEBUG                  /* debug memory management */
  57
  58 #define SAA7146_MAX 6
  59
  60 static struct saa7146 saa7146s[SAA7146_MAX];
  61
  62 static int saa_num;             /* number of SAA7146s in use */
  63
  64 static int video_nr = -1;
  65 module_param(video_nr, int, 0);
  66 MODULE_LICENSE("GPL");
  67
  68 #define nDebNormal      0x00480000
  69 #define nDebNoInc       0x00480000
  70 #define nDebVideo       0xd0480000
  71 #define nDebAudio       0xd0400000
  72 #define nDebDMA         0x02c80000
  73
  74 #define oDebNormal      0x13c80000
  75 #define oDebNoInc       0x13c80000
  76 #define oDebVideo       0xd1080000
  77 #define oDebAudio       0xd1080000
  78 #define oDebDMA         0x03080000
  79
  80 #define NewCard         (saa->boardcfg[3])
  81 #define ChipControl     (saa->boardcfg[1])
  82 #define NTSCFirstActive (saa->boardcfg[4])
  83 #define PALFirstActive  (saa->boardcfg[5])
  84 #define NTSCLastActive  (saa->boardcfg[54])
  85 #define PALLastActive   (saa->boardcfg[55])
  86 #define Have2MB         (saa->boardcfg[18] & 0x40)
  87 #define HaveCS8420      (saa->boardcfg[18] & 0x04)
  88 #define IBMMPEGCD20     (saa->boardcfg[18] & 0x20)
  89 #define HaveCS3310      (saa->boardcfg[18] & 0x01)
  90 #define CS3310MaxLvl    ((saa->boardcfg[30] << 8) | saa->boardcfg[31])
  91 #define HaveCS4341      (saa->boardcfg[40] == 2)
  92 #define SDIType         (saa->boardcfg[27])
  93 #define CurrentMode     (saa->boardcfg[2])
  94
  95 #define debNormal       (NewCard ? nDebNormal : oDebNormal)
  96 #define debNoInc        (NewCard ? nDebNoInc : oDebNoInc)
  97 #define debVideo        (NewCard ? nDebVideo : oDebVideo)
  98 #define debAudio        (NewCard ? nDebAudio : oDebAudio)
  99 #define debDMA          (NewCard ? nDebDMA : oDebDMA)
 100
 101 #ifdef USE_RESCUE_EEPROM_SDM275
 102 static unsigned char rescue_eeprom[64] = {
 103         0x00, 0x01, 0x04, 0x13, 0x26, 0x0f, 0x10, 0x00, 0x00, 0x00, 0x43, 0x63,
 104         0x22, 0x01, 0x29, 0x15, 0x73, 0x00, 0x1f,  'd',  'e',  'c',  'x',  'l',
 105          'd',  'v',  'a', 0x02, 0x00, 0x01, 0x00, 0xcc, 0xa4, 0x63, 0x09, 0xe2,
 106         0x10, 0x00, 0x0a, 0x00, 0x02, 0x02,  'd',  'e',  'c',  'x',  'l',  'a',
 107         0x00, 0x00, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 108         0x00, 0x00, 0x00, 0x00,
 109 };
 110 #endif
 111
 112 /* ----------------------------------------------------------------------- */
 113 /* Hardware I2C functions */
 114 static void I2CWipe(struct saa7146 *saa)
 115 {
 116         int i;
 117         /* set i2c to ~=100kHz, abort transfer, clear busy */
 118         saawrite(0x600 | SAA7146_I2C_ABORT, SAA7146_I2C_STATUS);
 119         saawrite((SAA7146_MC2_UPLD_I2C << 16) |
 120                  SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
 121         /* wait for i2c registers to be programmed */
 122         for (i = 0; i < 1000 &&
 123              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
 124                 schedule();
 125         saawrite(0x600, SAA7146_I2C_STATUS);
 126         saawrite((SAA7146_MC2_UPLD_I2C << 16) |
 127                  SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
 128         /* wait for i2c registers to be programmed */
 129         for (i = 0; i < 1000 &&
 130              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
 131                 schedule();
 132         saawrite(0x600, SAA7146_I2C_STATUS);
 133         saawrite((SAA7146_MC2_UPLD_I2C << 16) |
 134                  SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
 135         /* wait for i2c registers to be programmed */
 136         for (i = 0; i < 1000 &&
 137              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
 138                 schedule();
 139 }
 140
 141 /* read I2C */
 142 static int I2CRead(struct saa7146 *saa, unsigned char addr,
 143                    unsigned char subaddr, int dosub)
 144 {
 145         int i;
 146
 147         if (saaread(SAA7146_I2C_STATUS) & 0x3c)
 148                 I2CWipe(saa);
 149         for (i = 0;
 150                 i < 1000 && (saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY);
 151                 i++)
 152                 schedule();
 153         if (i == 1000)
 154                 I2CWipe(saa);
 155         if (dosub)
 156                 saawrite(((addr & 0xfe) << 24) | (((addr | 1) & 0xff) << 8) |
 157                         ((subaddr & 0xff) << 16) | 0xed, SAA7146_I2C_TRANSFER);
 158         else
 159                 saawrite(((addr & 0xfe) << 24) | (((addr | 1) & 0xff) << 16) |
 160                         0xf1, SAA7146_I2C_TRANSFER);
 161         saawrite((SAA7146_MC2_UPLD_I2C << 16) |
 162                  SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
 163         /* wait for i2c registers to be programmed */
 164         for (i = 0; i < 1000 &&
 165              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
 166                 schedule();
 167         /* wait for valid data */
 168         for (i = 0; i < 1000 &&
 169              (saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY); i++)
 170                 schedule();
 171         if (saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_ERR)
 172                 return -1;
 173         if (i == 1000)
 174                 printk("i2c setup read timeout\n");
 175         saawrite(0x41, SAA7146_I2C_TRANSFER);
 176         saawrite((SAA7146_MC2_UPLD_I2C << 16) |
 177                  SAA7146_MC2_UPLD_I2C, SAA7146_MC2);
 178         /* wait for i2c registers to be programmed */
 179         for (i = 0; i < 1000 &&
 180              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_I2C); i++)
 181                 schedule();
 182         /* wait for valid data */
 183         for (i = 0; i < 1000 &&
 184              (saaread(SAA7146_I2C_TRANSFER) & SAA7146_I2C_BUSY); i++)
 185                 schedule();
 186         if (saaread(SAA7146_I2C_TRANSFER) & SAA7146_I2C_ERR)
 187                 return -1;
 188         if (i == 1000)
 189                 printk("i2c read timeout\n");
 190         return ((saaread(SAA7146_I2C_TRANSFER) >> 24) & 0xff);
 191 }
 192
 193 /* set both to write both bytes, reset it to write only b1 */
 194
 195 static int I2CWrite(struct saa7146 *saa, unsigned char addr, unsigned char b1,
 196                     unsigned char b2, int both)
 197 {
 198         int i;
 199         u32 data;
 200
 201         if (saaread(SAA7146_I2C_STATUS) & 0x3c)
 202                 I2CWipe(saa);
 203         for (i = 0; i < 1000 &&
 204              (saaread(SAA7146_I2C_STATUS) & SAA7146_I2C_BUSY); i++)
 205                 schedule();
 206         if (i == 1000)
 207                 I2CWipe(saa);
 208         data = ((addr & 0xfe) << 24) | ((b1 & 0xff) << 16);
 209         if (both)
 210                 data |= ((b2 & 0xff) << 8) | 0xe5;
 211         else
 212                 data |= 0xd1;
 213         saawrite(data, SAA7146_I2C_TRANSFER);
 214         saawrite((SAA7146_MC2_UPLD_I2C << 16) | SAA7146_MC2_UPLD_I2C,
 215                  SAA7146_MC2);
 216         return 0;
 217 }
 218
 219 static void attach_inform(struct saa7146 *saa, int id)
 220 {
 221         int i;
 222
 223         DEBUG(printk(KERN_DEBUG "stradis%d: i2c: device found=%02x\n", saa->nr,
 224                 id));
 225         if (id == 0xa0) {       /* we have rev2 or later board, fill in info */
 226                 for (i = 0; i < 64; i++)
 227                         saa->boardcfg[i] = I2CRead(saa, 0xa0, i, 1);
 228 #ifdef USE_RESCUE_EEPROM_SDM275
 229                 if (saa->boardcfg[0] != 0) {
 230                         printk("stradis%d: WARNING: EEPROM STORED VALUES HAVE "
 231                                 "BEEN IGNORED\n", saa->nr);
 232                         for (i = 0; i < 64; i++)
 233                                 saa->boardcfg[i] = rescue_eeprom[i];
 234                 }
 235 #endif
 236                 printk("stradis%d: config =", saa->nr);
 237                 for (i = 0; i < 51; i++) {
 238                         printk(" %02x", saa->boardcfg[i]);
 239                 }
 240                 printk("\n");
 241         }
 242 }
 243
 244 static void I2CBusScan(struct saa7146 *saa)
 245 {
 246         int i;
 247         for (i = 0; i < 0xff; i += 2)
 248                 if ((I2CRead(saa, i, 0, 0)) >= 0)
 249                         attach_inform(saa, i);
 250 }
 251
 252 static int debiwait_maxwait;
 253
 254 static int wait_for_debi_done(struct saa7146 *saa)
 255 {
 256         int i;
 257
 258         /* wait for registers to be programmed */
 259         for (i = 0; i < 100000 &&
 260              !(saaread(SAA7146_MC2) & SAA7146_MC2_UPLD_DEBI); i++)
 261                 saaread(SAA7146_MC2);
 262         /* wait for transfer to complete */
 263         for (i = 0; i < 500000 &&
 264              (saaread(SAA7146_PSR) & SAA7146_PSR_DEBI_S); i++)
 265                 saaread(SAA7146_MC2);
 266
 267         if (i > debiwait_maxwait)
 268                 printk("wait-for-debi-done maxwait: %d\n",
 269                         debiwait_maxwait = i);
 270
 271         if (i == 500000)
 272                 return -1;
 273
 274         return 0;
 275 }
 276
 277 static int debiwrite(struct saa7146 *saa, u32 config, int addr,
 278         u32 val, int count)
 279 {
 280         u32 cmd;
 281         if (count <= 0 || count > 32764)
 282                 return -1;
 283         if (wait_for_debi_done(saa) < 0)
 284                 return -1;
 285         saawrite(config, SAA7146_DEBI_CONFIG);
 286         if (count <= 4)         /* immediate transfer */
 287                 saawrite(val, SAA7146_DEBI_AD);
 288         else                    /* block transfer */
 289                 saawrite(virt_to_bus(saa->dmadebi), SAA7146_DEBI_AD);
 290         saawrite((cmd = (count << 17) | (addr & 0xffff)), SAA7146_DEBI_COMMAND);
 291         saawrite((SAA7146_MC2_UPLD_DEBI << 16) | SAA7146_MC2_UPLD_DEBI,
 292                  SAA7146_MC2);
 293         return 0;
 294 }
 295
 296 static u32 debiread(struct saa7146 *saa, u32 config, int addr, int count)
 297 {
 298         u32 result = 0;
 299
 300         if (count > 32764 || count <= 0)
 301                 return 0;
 302         if (wait_for_debi_done(saa) < 0)
 303                 return 0;
 304         saawrite(virt_to_bus(saa->dmadebi), SAA7146_DEBI_AD);
 305         saawrite((count << 17) | 0x10000 | (addr & 0xffff),
 306                  SAA7146_DEBI_COMMAND);
 307         saawrite(config, SAA7146_DEBI_CONFIG);
 308         saawrite((SAA7146_MC2_UPLD_DEBI << 16) | SAA7146_MC2_UPLD_DEBI,
 309                  SAA7146_MC2);
 310         if (count > 4)          /* not an immediate transfer */
 311                 return count;
 312         wait_for_debi_done(saa);
 313         result = saaread(SAA7146_DEBI_AD);
 314         if (count == 1)
 315                 result &= 0xff;
 316         if (count == 2)
 317                 result &= 0xffff;
 318         if (count == 3)
 319                 result &= 0xffffff;
 320         return result;
 321 }
 322
 323 static void do_irq_send_data(struct saa7146 *saa)
 324 {
 325         int split, audbytes, vidbytes;
 326
 327         saawrite(SAA7146_PSR_PIN1, SAA7146_IER);
 328         /* if special feature mode in effect, disable audio sending */
 329         if (saa->playmode != VID_PLAY_NORMAL)
 330                 saa->audtail = saa->audhead = 0;
 331         if (saa->audhead <= saa->audtail)
 332                 audbytes = saa->audtail - saa->audhead;
 333         else
 334                 audbytes = 65536 - (saa->audhead - saa->audtail);
 335         if (saa->vidhead <= saa->vidtail)
 336                 vidbytes = saa->vidtail - saa->vidhead;
 337         else
 338                 vidbytes = 524288 - (saa->vidhead - saa->vidtail);
 339         if (audbytes == 0 && vidbytes == 0 && saa->osdtail == saa->osdhead) {
 340                 saawrite(0, SAA7146_IER);
 341                 return;
 342         }
 343         /* if at least 1 block audio waiting and audio fifo isn't full */
 344         if (audbytes >= 2048 && (debiread(saa, debNormal, IBM_MP2_AUD_FIFO, 2)
 345                         & 0xff) < 60) {
 346                 if (saa->audhead > saa->audtail)
 347                         split = 65536 - saa->audhead;
 348                 else
 349                         split = 0;
 350                 audbytes = 2048;
 351                 if (split > 0 && split < 2048) {
 352                         memcpy(saa->dmadebi, saa->audbuf + saa->audhead, split);
 353                         saa->audhead = 0;
 354                         audbytes -= split;
 355                 } else
 356                         split = 0;
 357                 memcpy(saa->dmadebi + split, saa->audbuf + saa->audhead,
 358                         audbytes);
 359                 saa->audhead += audbytes;
 360                 saa->audhead &= 0xffff;
 361                 debiwrite(saa, debAudio, (NewCard ? IBM_MP2_AUD_FIFO :
 362                         IBM_MP2_AUD_FIFOW), 0, 2048);
 363                 wake_up_interruptible(&saa->audq);
 364                 /* if at least 1 block video waiting and video fifo isn't full */
 365         } else if (vidbytes >= 30720 && (debiread(saa, debNormal,
 366                                                   IBM_MP2_FIFO, 2)) < 16384) {
 367                 if (saa->vidhead > saa->vidtail)
 368                         split = 524288 - saa->vidhead;
 369                 else
 370                         split = 0;
 371                 vidbytes = 30720;
 372                 if (split > 0 && split < 30720) {
 373                         memcpy(saa->dmadebi, saa->vidbuf + saa->vidhead, split);
 374                         saa->vidhead = 0;
 375                         vidbytes -= split;
 376                 } else
 377                         split = 0;
 378                 memcpy(saa->dmadebi + split, saa->vidbuf + saa->vidhead,
 379                         vidbytes);
 380                 saa->vidhead += vidbytes;
 381                 saa->vidhead &= 0x7ffff;
 382                 debiwrite(saa, debVideo, (NewCard ? IBM_MP2_FIFO :
 383                                           IBM_MP2_FIFOW), 0, 30720);
 384                 wake_up_interruptible(&saa->vidq);
 385         }
 386         saawrite(SAA7146_PSR_DEBI_S | SAA7146_PSR_PIN1, SAA7146_IER);
 387 }
 388
 389 static void send_osd_data(struct saa7146 *saa)
 390 {
 391         int size = saa->osdtail - saa->osdhead;
 392         if (size > 30720)
 393                 size = 30720;
 394         /* ensure some multiple of 8 bytes is transferred */
 395         size = 8 * ((size + 8) >> 3);
 396         if (size) {
 397                 debiwrite(saa, debNormal, IBM_MP2_OSD_ADDR,
 398                           (saa->osdhead >> 3), 2);
 399                 memcpy(saa->dmadebi, &saa->osdbuf[saa->osdhead], size);
 400                 saa->osdhead += size;
 401                 /* block transfer of next 8 bytes to ~32k bytes */
 402                 debiwrite(saa, debNormal, IBM_MP2_OSD_DATA, 0, size);
 403         }
 404         if (saa->osdhead >= saa->osdtail) {
 405                 saa->osdhead = saa->osdtail = 0;
 406                 debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
 407         }
 408 }
 409
 410 static irqreturn_t saa7146_irq(int irq, void *dev_id)
 411 {
 412         struct saa7146 *saa = dev_id;
 413         u32 stat, astat;
 414         int count;
 415         int handled = 0;
 416
 417         count = 0;
 418         while (1) {
 419                 /* get/clear interrupt status bits */
 420                 stat = saaread(SAA7146_ISR);
 421                 astat = stat & saaread(SAA7146_IER);
 422                 if (!astat)
 423                         break;
 424                 handled = 1;
 425                 saawrite(astat, SAA7146_ISR);
 426                 if (astat & SAA7146_PSR_DEBI_S) {
 427                         do_irq_send_data(saa);
 428                 }
 429                 if (astat & SAA7146_PSR_PIN1) {
 430                         int istat;
 431                         /* the following read will trigger DEBI_S */
 432                         istat = debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
 433                         if (istat & 1) {
 434                                 saawrite(0, SAA7146_IER);
 435                                 send_osd_data(saa);
 436                                 saawrite(SAA7146_PSR_DEBI_S |
 437                                          SAA7146_PSR_PIN1, SAA7146_IER);
 438                         }
 439                         if (istat & 0x20) {     /* Video Start */
 440                                 saa->vidinfo.frame_count++;
 441                         }
 442                         if (istat & 0x400) {    /* Picture Start */
 443                                 /* update temporal reference */
 444                         }
 445                         if (istat & 0x200) {    /* Picture Resolution Change */
 446                                 /* read new resolution */
 447                         }
 448                         if (istat & 0x100) {    /* New User Data found */
 449                                 /* read new user data */
 450                         }
 451                         if (istat & 0x1000) {   /* new GOP/SMPTE */
 452                                 /* read new SMPTE */
 453                         }
 454                         if (istat & 0x8000) {   /* Sequence Start Code */
 455                                 /* reset frame counter, load sizes */
 456                                 saa->vidinfo.frame_count = 0;
 457                                 saa->vidinfo.h_size = 704;
 458                                 saa->vidinfo.v_size = 480;
 459 #if 0
 460                                 if (saa->endmarkhead != saa->endmarktail) {
 461                                         saa->audhead =
 462                                                 saa->endmark[saa->endmarkhead];
 463                                         saa->endmarkhead++;
 464                                         if (saa->endmarkhead >= MAX_MARKS)
 465                                                 saa->endmarkhead = 0;
 466                                 }
 467 #endif
 468                         }
 469                         if (istat & 0x4000) {   /* Sequence Error Code */
 470                                 if (saa->endmarkhead != saa->endmarktail) {
 471                                         saa->audhead =
 472                                                 saa->endmark[saa->endmarkhead];
 473                                         saa->endmarkhead++;
 474                                         if (saa->endmarkhead >= MAX_MARKS)
 475                                                 saa->endmarkhead = 0;
 476                                 }
 477                         }
 478                 }
 479 #ifdef IDEBUG
 480                 if (astat & SAA7146_PSR_PPEF) {
 481                         IDEBUG(printk("stradis%d irq: PPEF\n", saa->nr));
 482                 }
 483                 if (astat & SAA7146_PSR_PABO) {
 484                         IDEBUG(printk("stradis%d irq: PABO\n", saa->nr));
 485                 }
 486                 if (astat & SAA7146_PSR_PPED) {
 487                         IDEBUG(printk("stradis%d irq: PPED\n", saa->nr));
 488                 }
 489                 if (astat & SAA7146_PSR_RPS_I1) {
 490                         IDEBUG(printk("stradis%d irq: RPS_I1\n", saa->nr));
 491                 }
 492                 if (astat & SAA7146_PSR_RPS_I0) {
 493                         IDEBUG(printk("stradis%d irq: RPS_I0\n", saa->nr));
 494                 }
 495                 if (astat & SAA7146_PSR_RPS_LATE1) {
 496                         IDEBUG(printk("stradis%d irq: RPS_LATE1\n", saa->nr));
 497                 }
 498                 if (astat & SAA7146_PSR_RPS_LATE0) {
 499                         IDEBUG(printk("stradis%d irq: RPS_LATE0\n", saa->nr));
 500                 }
 501                 if (astat & SAA7146_PSR_RPS_E1) {
 502                         IDEBUG(printk("stradis%d irq: RPS_E1\n", saa->nr));
 503                 }
 504                 if (astat & SAA7146_PSR_RPS_E0) {
 505                         IDEBUG(printk("stradis%d irq: RPS_E0\n", saa->nr));
 506                 }
 507                 if (astat & SAA7146_PSR_RPS_TO1) {
 508                         IDEBUG(printk("stradis%d irq: RPS_TO1\n", saa->nr));
 509                 }
 510                 if (astat & SAA7146_PSR_RPS_TO0) {
 511                         IDEBUG(printk("stradis%d irq: RPS_TO0\n", saa->nr));
 512                 }
 513                 if (astat & SAA7146_PSR_UPLD) {
 514                         IDEBUG(printk("stradis%d irq: UPLD\n", saa->nr));
 515                 }
 516                 if (astat & SAA7146_PSR_DEBI_E) {
 517                         IDEBUG(printk("stradis%d irq: DEBI_E\n", saa->nr));
 518                 }
 519                 if (astat & SAA7146_PSR_I2C_S) {
 520                         IDEBUG(printk("stradis%d irq: I2C_S\n", saa->nr));
 521                 }
 522                 if (astat & SAA7146_PSR_I2C_E) {
 523                         IDEBUG(printk("stradis%d irq: I2C_E\n", saa->nr));
 524                 }
 525                 if (astat & SAA7146_PSR_A2_IN) {
 526                         IDEBUG(printk("stradis%d irq: A2_IN\n", saa->nr));
 527                 }
 528                 if (astat & SAA7146_PSR_A2_OUT) {
 529                         IDEBUG(printk("stradis%d irq: A2_OUT\n", saa->nr));
 530                 }
 531                 if (astat & SAA7146_PSR_A1_IN) {
 532                         IDEBUG(printk("stradis%d irq: A1_IN\n", saa->nr));
 533                 }
 534                 if (astat & SAA7146_PSR_A1_OUT) {
 535                         IDEBUG(printk("stradis%d irq: A1_OUT\n", saa->nr));
 536                 }
 537                 if (astat & SAA7146_PSR_AFOU) {
 538                         IDEBUG(printk("stradis%d irq: AFOU\n", saa->nr));
 539                 }
 540                 if (astat & SAA7146_PSR_V_PE) {
 541                         IDEBUG(printk("stradis%d irq: V_PE\n", saa->nr));
 542                 }
 543                 if (astat & SAA7146_PSR_VFOU) {
 544                         IDEBUG(printk("stradis%d irq: VFOU\n", saa->nr));
 545                 }
 546                 if (astat & SAA7146_PSR_FIDA) {
 547                         IDEBUG(printk("stradis%d irq: FIDA\n", saa->nr));
 548                 }
 549                 if (astat & SAA7146_PSR_FIDB) {
 550                         IDEBUG(printk("stradis%d irq: FIDB\n", saa->nr));
 551                 }
 552                 if (astat & SAA7146_PSR_PIN3) {
 553                         IDEBUG(printk("stradis%d irq: PIN3\n", saa->nr));
 554                 }
 555                 if (astat & SAA7146_PSR_PIN2) {
 556                         IDEBUG(printk("stradis%d irq: PIN2\n", saa->nr));
 557                 }
 558                 if (astat & SAA7146_PSR_PIN0) {
 559                         IDEBUG(printk("stradis%d irq: PIN0\n", saa->nr));
 560                 }
 561                 if (astat & SAA7146_PSR_ECS) {
 562                         IDEBUG(printk("stradis%d irq: ECS\n", saa->nr));
 563                 }
 564                 if (astat & SAA7146_PSR_EC3S) {
 565                         IDEBUG(printk("stradis%d irq: EC3S\n", saa->nr));
 566                 }
 567                 if (astat & SAA7146_PSR_EC0S) {
 568                         IDEBUG(printk("stradis%d irq: EC0S\n", saa->nr));
 569                 }
 570 #endif
 571                 count++;
 572                 if (count > 15)
 573                         printk(KERN_WARNING "stradis%d: irq loop %d\n",
 574                                saa->nr, count);
 575                 if (count > 20) {
 576                         saawrite(0, SAA7146_IER);
 577                         printk(KERN_ERR
 578                                "stradis%d: IRQ loop cleared\n", saa->nr);
 579                 }
 580         }
 581         return IRQ_RETVAL(handled);
 582 }
 583
 584 static int ibm_send_command(struct saa7146 *saa,
 585                             int command, int data, int chain)
 586 {
 587         int i;
 588
 589         if (chain)
 590                 debiwrite(saa, debNormal, IBM_MP2_COMMAND, (command << 1)| 1,2);
 591         else
 592                 debiwrite(saa, debNormal, IBM_MP2_COMMAND, command << 1, 2);
 593         debiwrite(saa, debNormal, IBM_MP2_CMD_DATA, data, 2);
 594         debiwrite(saa, debNormal, IBM_MP2_CMD_STAT, 1, 2);
 595         for (i = 0; i < 100 &&
 596              (debiread(saa, debNormal, IBM_MP2_CMD_STAT, 2) & 1); i++)
 597                 schedule();
 598         if (i == 100)
 599                 return -1;
 600         return 0;
 601 }
 602
 603 static void cs4341_setlevel(struct saa7146 *saa, int left, int right)
 604 {
 605         I2CWrite(saa, 0x22, 0x03, left > 94 ? 94 : left, 2);
 606         I2CWrite(saa, 0x22, 0x04, right > 94 ? 94 : right, 2);
 607 }
 608
 609 static void initialize_cs4341(struct saa7146 *saa)
 610 {
 611         int i;
 612         for (i = 0; i < 200; i++) {
 613                 /* auto mute off, power on, no de-emphasis */
 614                 /* I2S data up to 24-bit 64xFs internal SCLK */
 615                 I2CWrite(saa, 0x22, 0x01, 0x11, 2);
 616                 /* ATAPI mixer settings */
 617                 I2CWrite(saa, 0x22, 0x02, 0x49, 2);
 618                 /* attenuation left 3db */
 619                 I2CWrite(saa, 0x22, 0x03, 0x00, 2);
 620                 /* attenuation right 3db */
 621                 I2CWrite(saa, 0x22, 0x04, 0x00, 2);
 622                 I2CWrite(saa, 0x22, 0x01, 0x10, 2);
 623                 if (I2CRead(saa, 0x22, 0x02, 1) == 0x49)
 624                         break;
 625                 schedule();
 626         }
 627         printk("stradis%d: CS4341 initialized (%d)\n", saa->nr, i);
 628         return;
 629 }
 630
 631 static void initialize_cs8420(struct saa7146 *saa, int pro)
 632 {
 633         int i;
 634         u8 *sequence;
 635         if (pro)
 636                 sequence = mode8420pro;
 637         else
 638                 sequence = mode8420con;
 639         for (i = 0; i < INIT8420LEN; i++)
 640                 I2CWrite(saa, 0x20, init8420[i * 2], init8420[i * 2 + 1], 2);
 641         for (i = 0; i < MODE8420LEN; i++)
 642                 I2CWrite(saa, 0x20, sequence[i * 2], sequence[i * 2 + 1], 2);
 643         printk("stradis%d: CS8420 initialized\n", saa->nr);
 644 }
 645
 646 static void initialize_saa7121(struct saa7146 *saa, int dopal)
 647 {
 648         int i, mod;
 649         u8 *sequence;
 650         if (dopal)
 651                 sequence = init7121pal;
 652         else
 653                 sequence = init7121ntsc;
 654         mod = saaread(SAA7146_PSR) & 0x08;
 655         /* initialize PAL/NTSC video encoder */
 656         for (i = 0; i < INIT7121LEN; i++) {
 657                 if (NewCard) {  /* handle new card encoder differences */
 658                         if (sequence[i * 2] == 0x3a)
 659                                 I2CWrite(saa, 0x88, 0x3a, 0x13, 2);
 660                         else if (sequence[i * 2] == 0x6b)
 661                                 I2CWrite(saa, 0x88, 0x6b, 0x20, 2);
 662                         else if (sequence[i * 2] == 0x6c)
 663                                 I2CWrite(saa, 0x88, 0x6c,
 664                                          dopal ? 0x09 : 0xf5, 2);
 665                         else if (sequence[i * 2] == 0x6d)
 666                                 I2CWrite(saa, 0x88, 0x6d,
 667                                          dopal ? 0x20 : 0x00, 2);
 668                         else if (sequence[i * 2] == 0x7a)
 669                                 I2CWrite(saa, 0x88, 0x7a,
 670                                          dopal ? (PALFirstActive - 1) :
 671                                          (NTSCFirstActive - 4), 2);
 672                         else if (sequence[i * 2] == 0x7b)
 673                                 I2CWrite(saa, 0x88, 0x7b,
 674                                          dopal ? PALLastActive :
 675                                          NTSCLastActive, 2);
 676                         else
 677                                 I2CWrite(saa, 0x88, sequence[i * 2],
 678                                          sequence[i * 2 + 1], 2);
 679                 } else {
 680                         if (sequence[i * 2] == 0x6b && mod)
 681                                 I2CWrite(saa, 0x88, 0x6b,
 682                                          (sequence[i * 2 + 1] ^ 0x09), 2);
 683                         else if (sequence[i * 2] == 0x7a)
 684                                 I2CWrite(saa, 0x88, 0x7a,
 685                                          dopal ? (PALFirstActive - 1) :
 686                                          (NTSCFirstActive - 4), 2);
 687                         else if (sequence[i * 2] == 0x7b)
 688                                 I2CWrite(saa, 0x88, 0x7b,
 689                                          dopal ? PALLastActive :
 690                                          NTSCLastActive, 2);
 691                         else
 692                                 I2CWrite(saa, 0x88, sequence[i * 2],
 693                                          sequence[i * 2 + 1], 2);
 694                 }
 695         }
 696 }
 697
 698 static void set_genlock_offset(struct saa7146 *saa, int noffset)
 699 {
 700         int nCode;
 701         int PixelsPerLine = 858;
 702         if (CurrentMode == VIDEO_MODE_PAL)
 703                 PixelsPerLine = 864;
 704         if (noffset > 500)
 705                 noffset = 500;
 706         else if (noffset < -500)
 707                 noffset = -500;
 708         nCode = noffset + 0x100;
 709         if (nCode == 1)
 710                 nCode = 0x401;
 711         else if (nCode < 1)
 712                 nCode = 0x400 + PixelsPerLine + nCode;
 713         debiwrite(saa, debNormal, XILINX_GLDELAY, nCode, 2);
 714 }
 715
 716 static void set_out_format(struct saa7146 *saa, int mode)
 717 {
 718         initialize_saa7121(saa, (mode == VIDEO_MODE_NTSC ? 0 : 1));
 719         saa->boardcfg[2] = mode;
 720         /* do not adjust analog video parameters here, use saa7121 init */
 721         /* you will affect the SDI output on the new card */
 722         if (mode == VIDEO_MODE_PAL) {   /* PAL */
 723                 debiwrite(saa, debNormal, XILINX_CTL0, 0x0808, 2);
 724                 mdelay(50);
 725                 saawrite(0x012002c0, SAA7146_NUM_LINE_BYTE1);
 726                 if (NewCard) {
 727                         debiwrite(saa, debNormal, IBM_MP2_DISP_MODE, 0xe100, 2);
 728                         mdelay(50);
 729                 }
 730                 debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
 731                           NewCard ? 0xe500 : 0x6500, 2);
 732                 debiwrite(saa, debNormal, IBM_MP2_DISP_DLY,
 733                           (1 << 8) |
 734                           (NewCard ? PALFirstActive : PALFirstActive - 6), 2);
 735         } else {                /* NTSC */
 736                 debiwrite(saa, debNormal, XILINX_CTL0, 0x0800, 2);
 737                 mdelay(50);
 738                 saawrite(0x00f002c0, SAA7146_NUM_LINE_BYTE1);
 739                 debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
 740                           NewCard ? 0xe100 : 0x6100, 2);
 741                 debiwrite(saa, debNormal, IBM_MP2_DISP_DLY,
 742                           (1 << 8) |
 743                           (NewCard ? NTSCFirstActive : NTSCFirstActive - 6), 2);
 744         }
 745 }
 746
 747 /* Intialize bitmangler to map from a byte value to the mangled word that
 748  * must be output to program the Xilinx part through the DEBI port.
 749  * Xilinx Data Bit->DEBI Bit: 0->15 1->7 2->6 3->12 4->11 5->2 6->1 7->0
 750  * transfer FPGA code, init IBM chip, transfer IBM microcode
 751  * rev2 card mangles: 0->7 1->6 2->5 3->4 4->3 5->2 6->1 7->0
 752  */
 753 static u16 bitmangler[256];
 754
 755 static int initialize_fpga(struct video_code *bitdata)
 756 {
 757         int i, num, startindex, failure = 0, loadtwo, loadfile = 0;
 758         u16 *dmabuf;
 759         u8 *newdma;
 760         struct saa7146 *saa;
 761
 762         /* verify fpga code */
 763         for (startindex = 0; startindex < bitdata->datasize; startindex++)
 764                 if (bitdata->data[startindex] == 255)
 765                         break;
 766         if (startindex == bitdata->datasize) {
 767                 printk(KERN_INFO "stradis: bad fpga code\n");
 768                 return -1;
 769         }
 770         /* initialize all detected cards */
 771         for (num = 0; num < saa_num; num++) {
 772                 saa = &saa7146s[num];
 773                 if (saa->boardcfg[0] > 20)
 774                         continue;       /* card was programmed */
 775                 loadtwo = (saa->boardcfg[18] & 0x10);
 776                 if (!NewCard)   /* we have an old board */
 777                         for (i = 0; i < 256; i++)
 778                                 bitmangler[i] = ((i & 0x01) << 15) |
 779                                         ((i & 0x02) << 6) | ((i & 0x04) << 4) |
 780                                         ((i & 0x08) << 9) | ((i & 0x10) << 7) |
 781                                         ((i & 0x20) >> 3) | ((i & 0x40) >> 5) |
 782                                         ((i & 0x80) >> 7);
 783                 else            /* else we have a new board */
 784                         for (i = 0; i < 256; i++)
 785                                 bitmangler[i] = ((i & 0x01) << 7) |
 786                                         ((i & 0x02) << 5) | ((i & 0x04) << 3) |
 787                                         ((i & 0x08) << 1) | ((i & 0x10) >> 1) |
 788                                         ((i & 0x20) >> 3) | ((i & 0x40) >> 5) |
 789                                         ((i & 0x80) >> 7);
 790
 791                 dmabuf = (u16 *) saa->dmadebi;
 792                 newdma = (u8 *) saa->dmadebi;
 793                 if (NewCard) {  /* SDM2xxx */
 794                         if (!strncmp(bitdata->loadwhat, "decoder2", 8))
 795                                 continue;       /* fpga not for this card */
 796                         if (!strncmp(&saa->boardcfg[42], bitdata->loadwhat, 8))
 797                                 loadfile = 1;
 798                         else if (loadtwo && !strncmp(&saa->boardcfg[19],
 799                                        bitdata->loadwhat, 8))
 800                                 loadfile = 2;
 801                         else if (!saa->boardcfg[42] && !strncmp("decxl",
 802                                         bitdata->loadwhat, 8))
 803                                 loadfile = 1;   /* special */
 804                         else
 805                                 continue;       /* fpga not for this card */
 806                         if (loadfile != 1 && loadfile != 2)
 807                                 continue;       /* skip to next card */
 808                         if (saa->boardcfg[0] && loadfile == 1)
 809                                 continue;       /* skip to next card */
 810                         if (saa->boardcfg[0] != 1 && loadfile == 2)
 811                                 continue;       /* skip to next card */
 812                         saa->boardcfg[0]++;     /* mark fpga handled */
 813                         printk("stradis%d: loading %s\n", saa->nr,
 814                                 bitdata->loadwhat);
 815                         if (loadtwo && loadfile == 2)
 816                                 goto send_fpga_stuff;
 817                         /* turn on the Audio interface to set PROG low */
 818                         saawrite(0x00400040, SAA7146_GPIO_CTRL);
 819                         saaread(SAA7146_PSR);   /* ensure posted write */
 820                         /* wait for everyone to reset */
 821                         mdelay(10);
 822                         saawrite(0x00400000, SAA7146_GPIO_CTRL);
 823                 } else {        /* original card */
 824                         if (strncmp(bitdata->loadwhat, "decoder2", 8))
 825                                 continue;       /* fpga not for this card */
 826                         /* Pull the Xilinx PROG signal WS3 low */
 827                         saawrite(0x02000200, SAA7146_MC1);
 828                         /* Turn on the Audio interface so can set PROG low */
 829                         saawrite(0x000000c0, SAA7146_ACON1);
 830                         /* Pull the Xilinx INIT signal (GPIO2) low */
 831                         saawrite(0x00400000, SAA7146_GPIO_CTRL);
 832                         /* Make sure everybody resets */
 833                         saaread(SAA7146_PSR);   /* ensure posted write */
 834                         mdelay(10);
 835                         /* Release the Xilinx PROG signal */
 836                         saawrite(0x00000000, SAA7146_ACON1);
 837                         /* Turn off the Audio interface */
 838                         saawrite(0x02000000, SAA7146_MC1);
 839                 }
 840                 /* Release Xilinx INIT signal (WS2) */
 841                 saawrite(0x00000000, SAA7146_GPIO_CTRL);
 842                 /* Wait for the INIT to go High */
 843                 for (i = 0;
 844                         i < 10000 && !(saaread(SAA7146_PSR) & SAA7146_PSR_PIN2);
 845                         i++)
 846                         schedule();
 847                 if (i == 1000) {
 848                         printk(KERN_INFO "stradis%d: no fpga INIT\n", saa->nr);
 849                         return -1;
 850                 }
 851 send_fpga_stuff:
 852                 if (NewCard) {
 853                         for (i = startindex; i < bitdata->datasize; i++)
 854                                 newdma[i - startindex] =
 855                                     bitmangler[bitdata->data[i]];
 856                         debiwrite(saa, 0x01420000, 0, 0,
 857                                 ((bitdata->datasize - startindex) + 5));
 858                         if (loadtwo && loadfile == 1) {
 859                                 printk("stradis%d: awaiting 2nd FPGA bitfile\n",
 860                                        saa->nr);
 861                                 continue;       /* skip to next card */
 862                         }
 863                 } else {
 864                         for (i = startindex; i < bitdata->datasize; i++)
 865                                 dmabuf[i - startindex] =
 866                                         bitmangler[bitdata->data[i]];
 867                         debiwrite(saa, 0x014a0000, 0, 0,
 868                                 ((bitdata->datasize - startindex) + 5) * 2);
 869                 }
 870                 for (i = 0;
 871                         i < 1000 && !(saaread(SAA7146_PSR) & SAA7146_PSR_PIN2);
 872                         i++)
 873                         schedule();
 874                 if (i == 1000) {
 875                         printk(KERN_INFO "stradis%d: FPGA load failed\n",
 876                                saa->nr);
 877                         failure++;
 878                         continue;
 879                 }
 880                 if (!NewCard) {
 881                         /* Pull the Xilinx INIT signal (GPIO2) low */
 882                         saawrite(0x00400000, SAA7146_GPIO_CTRL);
 883                         saaread(SAA7146_PSR);   /* ensure posted write */
 884                         mdelay(2);
 885                         saawrite(0x00000000, SAA7146_GPIO_CTRL);
 886                         mdelay(2);
 887                 }
 888                 printk(KERN_INFO "stradis%d: FPGA Loaded\n", saa->nr);
 889                 saa->boardcfg[0] = 26;  /* mark fpga programmed */
 890                 /* set VXCO to its lowest frequency */
 891                 debiwrite(saa, debNormal, XILINX_PWM, 0, 2);
 892                 if (NewCard) {
 893                         /* mute CS3310 */
 894                         if (HaveCS3310)
 895                                 debiwrite(saa, debNormal, XILINX_CS3310_CMPLT,
 896                                         0, 2);
 897                         /* set VXCO to PWM mode, release reset, blank on */
 898                         debiwrite(saa, debNormal, XILINX_CTL0, 0xffc4, 2);
 899                         mdelay(10);
 900                         /* unmute CS3310 */
 901                         if (HaveCS3310)
 902                                 debiwrite(saa, debNormal, XILINX_CTL0,
 903                                         0x2020, 2);
 904                 }
 905                 /* set source Black */
 906                 debiwrite(saa, debNormal, XILINX_CTL0, 0x1707, 2);
 907                 saa->boardcfg[4] = 22;  /* set NTSC First Active Line */
 908                 saa->boardcfg[5] = 23;  /* set PAL First Active Line */
 909                 saa->boardcfg[54] = 2;  /* set NTSC Last Active Line - 256 */
 910                 saa->boardcfg[55] = 54; /* set PAL Last Active Line - 256 */
 911                 set_out_format(saa, VIDEO_MODE_NTSC);
 912                 mdelay(50);
 913                 /* begin IBM chip init */
 914                 debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 4, 2);
 915                 saaread(SAA7146_PSR);   /* wait for reset */
 916                 mdelay(5);
 917                 debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0, 2);
 918                 debiread(saa, debNormal, IBM_MP2_CHIP_CONTROL, 2);
 919                 debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0x10, 2);
 920                 debiwrite(saa, debNormal, IBM_MP2_CMD_ADDR, 0, 2);
 921                 debiwrite(saa, debNormal, IBM_MP2_CHIP_MODE, 0x2e, 2);
 922                 if (NewCard) {
 923                         mdelay(5);
 924                         /* set i2s rate converter to 48KHz */
 925                         debiwrite(saa, debNormal, 0x80c0, 6, 2);
 926                         /* we must init CS8420 first since rev b pulls i2s */
 927                         /* master clock low and CS4341 needs i2s master to */
 928                         /* run the i2c port. */
 929                         if (HaveCS8420)
 930                                 /* 0=consumer, 1=pro */
 931                                 initialize_cs8420(saa, 0);
 932
 933                         mdelay(5);
 934                         if (HaveCS4341)
 935                                 initialize_cs4341(saa);
 936                 }
 937                 debiwrite(saa, debNormal, IBM_MP2_INFC_CTL, 0x48, 2);
 938                 debiwrite(saa, debNormal, IBM_MP2_BEEP_CTL, 0xa000, 2);
 939                 debiwrite(saa, debNormal, IBM_MP2_DISP_LBOR, 0, 2);
 940                 debiwrite(saa, debNormal, IBM_MP2_DISP_TBOR, 0, 2);
 941                 if (NewCard)
 942                         set_genlock_offset(saa, 0);
 943                 debiwrite(saa, debNormal, IBM_MP2_FRNT_ATTEN, 0, 2);
 944 #if 0
 945                 /* enable genlock */
 946                 debiwrite(saa, debNormal, XILINX_CTL0, 0x8000, 2);
 947 #else
 948                 /* disable genlock */
 949                 debiwrite(saa, debNormal, XILINX_CTL0, 0x8080, 2);
 950 #endif
 951         }
 952
 953         return failure;
 954 }
 955
 956 static int do_ibm_reset(struct saa7146 *saa)
 957 {
 958         /* failure if decoder not previously programmed */
 959         if (saa->boardcfg[0] < 37)
 960                 return -EIO;
 961         /* mute CS3310 */
 962         if (HaveCS3310)
 963                 debiwrite(saa, debNormal, XILINX_CS3310_CMPLT, 0, 2);
 964         /* disable interrupts */
 965         saawrite(0, SAA7146_IER);
 966         saa->audhead = saa->audtail = 0;
 967         saa->vidhead = saa->vidtail = 0;
 968         /* tristate debi bus, disable debi transfers */
 969         saawrite(0x00880000, SAA7146_MC1);
 970         /* ensure posted write */
 971         saaread(SAA7146_MC1);
 972         mdelay(50);
 973         /* re-enable debi transfers */
 974         saawrite(0x00880088, SAA7146_MC1);
 975         /* set source Black */
 976         debiwrite(saa, debNormal, XILINX_CTL0, 0x1707, 2);
 977         /* begin IBM chip init */
 978         set_out_format(saa, CurrentMode);
 979         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 4, 2);
 980         saaread(SAA7146_PSR);   /* wait for reset */
 981         mdelay(5);
 982         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, 0, 2);
 983         debiread(saa, debNormal, IBM_MP2_CHIP_CONTROL, 2);
 984         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, ChipControl, 2);
 985         debiwrite(saa, debNormal, IBM_MP2_CHIP_MODE, 0x2e, 2);
 986         if (NewCard) {
 987                 mdelay(5);
 988                 /* set i2s rate converter to 48KHz */
 989                 debiwrite(saa, debNormal, 0x80c0, 6, 2);
 990                 /* we must init CS8420 first since rev b pulls i2s */
 991                 /* master clock low and CS4341 needs i2s master to */
 992                 /* run the i2c port. */
 993                 if (HaveCS8420)
 994                         /* 0=consumer, 1=pro */
 995                         initialize_cs8420(saa, 1);
 996
 997                 mdelay(5);
 998                 if (HaveCS4341)
 999                         initialize_cs4341(saa);
1000         }
1001         debiwrite(saa, debNormal, IBM_MP2_INFC_CTL, 0x48, 2);
1002         debiwrite(saa, debNormal, IBM_MP2_BEEP_CTL, 0xa000, 2);
1003         debiwrite(saa, debNormal, IBM_MP2_DISP_LBOR, 0, 2);
1004         debiwrite(saa, debNormal, IBM_MP2_DISP_TBOR, 0, 2);
1005         if (NewCard)
1006                 set_genlock_offset(saa, 0);
1007         debiwrite(saa, debNormal, IBM_MP2_FRNT_ATTEN, 0, 2);
1008         debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0x2000, 2);
1009         debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4552, 2);
1010         if (ibm_send_command(saa, IBM_MP2_CONFIG_DECODER,
1011                         (ChipControl == 0x43 ? 0xe800 : 0xe000), 1)) {
1012                 printk(KERN_ERR "stradis%d: IBM config failed\n", saa->nr);
1013         }
1014         if (HaveCS3310) {
1015                 int i = CS3310MaxLvl;
1016                 debiwrite(saa, debNormal, XILINX_CS3310_CMPLT, ((i << 8)| i),2);
1017         }
1018         /* start video decoder */
1019         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL, ChipControl, 2);
1020         /* 256k vid, 3520 bytes aud */
1021         debiwrite(saa, debNormal, IBM_MP2_RB_THRESHOLD, 0x4037, 2);
1022         debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4573, 2);
1023         ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
1024         /* enable buffer threshold irq */
1025         debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
1026         /* clear pending interrupts */
1027         debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
1028         debiwrite(saa, debNormal, XILINX_CTL0, 0x1711, 2);
1029
1030         return 0;
1031 }
1032
1033 /* load the decoder microcode */
1034 static int initialize_ibmmpeg2(struct video_code *microcode)
1035 {
1036         int i, num;
1037         struct saa7146 *saa;
1038
1039         for (num = 0; num < saa_num; num++) {
1040                 saa = &saa7146s[num];
1041                 /* check that FPGA is loaded */
1042                 debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0xa55a, 2);
1043                 i = debiread(saa, debNormal, IBM_MP2_OSD_SIZE, 2);
1044                 if (i != 0xa55a) {
1045                         printk(KERN_INFO "stradis%d: %04x != 0xa55a\n",
1046                                 saa->nr, i);
1047 #if 0
1048                         return -1;
1049 #endif
1050                 }
1051                 if (!strncmp(microcode->loadwhat, "decoder.vid", 11)) {
1052                         if (saa->boardcfg[0] > 27)
1053                                 continue;       /* skip to next card */
1054                         /* load video control store */
1055                         saa->boardcfg[1] = 0x13;        /* no-sync default */
1056                         debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 1, 2);
1057                         debiwrite(saa, debNormal, IBM_MP2_PROC_IADDR, 0, 2);
1058                         for (i = 0; i < microcode->datasize / 2; i++)
1059                                 debiwrite(saa, debNormal, IBM_MP2_PROC_IDATA,
1060                                         (microcode->data[i * 2] << 8) |
1061                                         microcode->data[i * 2 + 1], 2);
1062                         debiwrite(saa, debNormal, IBM_MP2_PROC_IADDR, 0, 2);
1063                         debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 0, 2);
1064                         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
1065                                 ChipControl, 2);
1066                         saa->boardcfg[0] = 28;
1067                 }
1068                 if (!strncmp(microcode->loadwhat, "decoder.aud", 11)) {
1069                         if (saa->boardcfg[0] > 35)
1070                                 continue;       /* skip to next card */
1071                         /* load audio control store */
1072                         debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 1, 2);
1073                         debiwrite(saa, debNormal, IBM_MP2_AUD_IADDR, 0, 2);
1074                         for (i = 0; i < microcode->datasize; i++)
1075                                 debiwrite(saa, debNormal, IBM_MP2_AUD_IDATA,
1076                                         microcode->data[i], 1);
1077                         debiwrite(saa, debNormal, IBM_MP2_AUD_IADDR, 0, 2);
1078                         debiwrite(saa, debNormal, IBM_MP2_WR_PROT, 0, 2);
1079                         debiwrite(saa, debNormal, IBM_MP2_OSD_SIZE, 0x2000, 2);
1080                         debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4552, 2);
1081                         if (ibm_send_command(saa, IBM_MP2_CONFIG_DECODER,
1082                                         0xe000, 1)) {
1083                                 printk(KERN_ERR "stradis%d: IBM config "
1084                                         "failed\n", saa->nr);
1085                                 return -1;
1086                         }
1087                         /* set PWM to center value */
1088                         if (NewCard) {
1089                                 debiwrite(saa, debNormal, XILINX_PWM,
1090                                         saa->boardcfg[14] +
1091                                         (saa->boardcfg[13] << 8), 2);
1092                         } else
1093                                 debiwrite(saa, debNormal, XILINX_PWM, 0x46, 2);
1094
1095                         if (HaveCS3310) {
1096                                 i = CS3310MaxLvl;
1097                                 debiwrite(saa, debNormal, XILINX_CS3310_CMPLT,
1098                                         (i << 8) | i, 2);
1099                         }
1100                         printk(KERN_INFO "stradis%d: IBM MPEGCD%d Inited\n",
1101                                 saa->nr, 18 + (debiread(saa, debNormal,
1102                                 IBM_MP2_CHIP_CONTROL, 2) >> 12));
1103                         /* start video decoder */
1104                         debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
1105                                 ChipControl, 2);
1106                         debiwrite(saa, debNormal, IBM_MP2_RB_THRESHOLD, 0x4037,
1107                                 2);     /* 256k vid, 3520 bytes aud */
1108                         debiwrite(saa, debNormal, IBM_MP2_AUD_CTL, 0x4573, 2);
1109                         ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
1110                         /* enable buffer threshold irq */
1111                         debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00c, 2);
1112                         debiread(saa, debNormal, IBM_MP2_HOST_INT, 2);
1113                         /* enable gpio irq */
1114                         saawrite(0x00002000, SAA7146_GPIO_CTRL);
1115                         /* enable decoder output to HPS */
1116                         debiwrite(saa, debNormal, XILINX_CTL0, 0x1711, 2);
1117                         saa->boardcfg[0] = 37;
1118                 }
1119         }
1120
1121         return 0;
1122 }
1123
1124 static u32 palette2fmt[] = {    /* some of these YUV translations are wrong */
1125         0xffffffff, 0x86000000, 0x87000000, 0x80000000, 0x8100000, 0x82000000,
1126         0x83000000, 0x00000000, 0x03000000, 0x03000000, 0x0a00000, 0x03000000,
1127         0x06000000, 0x00000000, 0x03000000, 0x0a000000, 0x0300000
1128 };
1129 static int bpp2fmt[4] = {
1130         VIDEO_PALETTE_HI240, VIDEO_PALETTE_RGB565, VIDEO_PALETTE_RGB24,
1131         VIDEO_PALETTE_RGB32
1132 };
1133
1134 /* I wish I could find a formula to calculate these... */
1135 static u32 h_prescale[64] = {
1136         0x10000000, 0x18040202, 0x18080000, 0x380c0606, 0x38100204, 0x38140808,
1137         0x38180000, 0x381c0000, 0x3820161c, 0x38242a3b, 0x38281230, 0x382c4460,
1138         0x38301040, 0x38340080, 0x38380000, 0x383c0000, 0x3840fefe, 0x3844ee9f,
1139         0x3848ee9f, 0x384cee9f, 0x3850ee9f, 0x38542a3b, 0x38581230, 0x385c0000,
1140         0x38600000, 0x38640000, 0x38680000, 0x386c0000, 0x38700000, 0x38740000,
1141         0x38780000, 0x387c0000, 0x30800000, 0x38840000, 0x38880000, 0x388c0000,
1142         0x38900000, 0x38940000, 0x38980000, 0x389c0000, 0x38a00000, 0x38a40000,
1143         0x38a80000, 0x38ac0000, 0x38b00000, 0x38b40000, 0x38b80000, 0x38bc0000,
1144         0x38c00000, 0x38c40000, 0x38c80000, 0x38cc0000, 0x38d00000, 0x38d40000,
1145         0x38d80000, 0x38dc0000, 0x38e00000, 0x38e40000, 0x38e80000, 0x38ec0000,
1146         0x38f00000, 0x38f40000, 0x38f80000, 0x38fc0000,
1147 };
1148 static u32 v_gain[64] = {
1149         0x016000ff, 0x016100ff, 0x016100ff, 0x016200ff, 0x016200ff, 0x016200ff,
1150         0x016200ff, 0x016300ff, 0x016300ff, 0x016300ff, 0x016300ff, 0x016300ff,
1151         0x016300ff, 0x016300ff, 0x016300ff, 0x016400ff, 0x016400ff, 0x016400ff,
1152         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1153         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1154         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1155         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1156         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1157         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1158         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1159         0x016400ff, 0x016400ff, 0x016400ff, 0x016400ff,
1160 };
1161
1162 static void saa7146_set_winsize(struct saa7146 *saa)
1163 {
1164         u32 format;
1165         int offset, yacl, ysci;
1166         saa->win.color_fmt = format =
1167             (saa->win.depth == 15) ? palette2fmt[VIDEO_PALETTE_RGB555] :
1168             palette2fmt[bpp2fmt[(saa->win.bpp - 1) & 3]];
1169         offset = saa->win.x * saa->win.bpp + saa->win.y * saa->win.bpl;
1170         saawrite(saa->win.vidadr + offset, SAA7146_BASE_EVEN1);
1171         saawrite(saa->win.vidadr + offset + saa->win.bpl, SAA7146_BASE_ODD1);
1172         saawrite(saa->win.bpl * 2, SAA7146_PITCH1);
1173         saawrite(saa->win.vidadr + saa->win.bpl * saa->win.sheight,
1174                  SAA7146_PROT_ADDR1);
1175         saawrite(0, SAA7146_PAGE1);
1176         saawrite(format | 0x60, SAA7146_CLIP_FORMAT_CTRL);
1177         offset = (704 / (saa->win.width - 1)) & 0x3f;
1178         saawrite(h_prescale[offset], SAA7146_HPS_H_PRESCALE);
1179         offset = (720896 / saa->win.width) / (offset + 1);
1180         saawrite((offset << 12) | 0x0c, SAA7146_HPS_H_SCALE);
1181         if (CurrentMode == VIDEO_MODE_NTSC) {
1182                 yacl = /*(480 / saa->win.height - 1) & 0x3f */ 0;
1183                 ysci = 1024 - (saa->win.height * 1024 / 480);
1184         } else {
1185                 yacl = /*(576 / saa->win.height - 1) & 0x3f */ 0;
1186                 ysci = 1024 - (saa->win.height * 1024 / 576);
1187         }
1188         saawrite((1 << 31) | (ysci << 21) | (yacl << 15), SAA7146_HPS_V_SCALE);
1189         saawrite(v_gain[yacl], SAA7146_HPS_V_GAIN);
1190         saawrite(((SAA7146_MC2_UPLD_DMA1 | SAA7146_MC2_UPLD_HPS_V |
1191                 SAA7146_MC2_UPLD_HPS_H) << 16) | (SAA7146_MC2_UPLD_DMA1 |
1192                 SAA7146_MC2_UPLD_HPS_V | SAA7146_MC2_UPLD_HPS_H), SAA7146_MC2);
1193 }
1194
1195 /* clip_draw_rectangle(cm,x,y,w,h) -- handle clipping an area
1196  * bitmap is fixed width, 128 bytes (1024 pixels represented)
1197  * arranged most-sigificant-bit-left in 32-bit words
1198  * based on saa7146 clipping hardware, it swaps bytes if LE
1199  * much of this makes up for egcs brain damage -- so if you
1200  * are wondering "why did he do this?" it is because the C
1201  * was adjusted to generate the optimal asm output without
1202  * writing non-portable __asm__ directives.
1203  */
1204
1205 static void clip_draw_rectangle(u32 *clipmap, int x, int y, int w, int h)
1206 {
1207         register int startword, endword;
1208         register u32 bitsleft, bitsright;
1209         u32 *temp;
1210         if (x < 0) {
1211                 w += x;
1212                 x = 0;
1213         }
1214         if (y < 0) {
1215                 h += y;
1216                 y = 0;
1217         }
1218         if (w <= 0 || h <= 0 || x > 1023 || y > 639)
1219                 return;         /* throw away bad clips */
1220         if (x + w > 1024)
1221                 w = 1024 - x;
1222         if (y + h > 640)
1223                 h = 640 - y;
1224         startword = (x >> 5);
1225         endword = ((x + w) >> 5);
1226         bitsleft = (0xffffffff >> (x & 31));
1227         bitsright = (0xffffffff << (~((x + w) - (endword << 5))));
1228         temp = &clipmap[(y << 5) + startword];
1229         w = endword - startword;
1230         if (!w) {
1231                 bitsleft |= bitsright;
1232                 for (y = 0; y < h; y++) {
1233                         *temp |= bitsleft;
1234                         temp += 32;
1235                 }
1236         } else {
1237                 for (y = 0; y < h; y++) {
1238                         *temp++ |= bitsleft;
1239                         for (x = 1; x < w; x++)
1240                                 *temp++ = 0xffffffff;
1241                         *temp |= bitsright;
1242                         temp += (32 - w);
1243                 }
1244         }
1245 }
1246
1247 static void make_clip_tab(struct saa7146 *saa, struct video_clip *cr, int ncr)
1248 {
1249         int i, width, height;
1250         u32 *clipmap;
1251
1252         clipmap = saa->dmavid2;
1253         if ((width = saa->win.width) > 1023)
1254                 width = 1023;   /* sanity check */
1255         if ((height = saa->win.height) > 640)
1256                 height = 639;   /* sanity check */
1257         if (ncr > 0) {          /* rectangles pased */
1258                 /* convert rectangular clips to a bitmap */
1259                 memset(clipmap, 0, VIDEO_CLIPMAP_SIZE); /* clear map */
1260                 for (i = 0; i < ncr; i++)
1261                         clip_draw_rectangle(clipmap, cr[i].x, cr[i].y,
1262                                 cr[i].width, cr[i].height);
1263         }
1264         /* clip against viewing window AND screen
1265            so we do not have to rely on the user program
1266          */
1267         clip_draw_rectangle(clipmap, (saa->win.x + width > saa->win.swidth) ?
1268                 (saa->win.swidth - saa->win.x) : width, 0, 1024, 768);
1269         clip_draw_rectangle(clipmap, 0,
1270                 (saa->win.y + height > saa->win.sheight) ?
1271                 (saa->win.sheight - saa->win.y) : height, 1024, 768);
1272         if (saa->win.x < 0)
1273                 clip_draw_rectangle(clipmap, 0, 0, -saa->win.x, 768);
1274         if (saa->win.y < 0)
1275                 clip_draw_rectangle(clipmap, 0, 0, 1024, -saa->win.y);
1276 }
1277
1278 static int saa_ioctl(struct inode *inode, struct file *file,
1279                      unsigned int cmd, unsigned long argl)
1280 {
1281         struct saa7146 *saa = file->private_data;
1282         void __user *arg = (void __user *)argl;
1283
1284         switch (cmd) {
1285         case VIDIOCGCAP:
1286                 {
1287                         struct video_capability b;
1288                         strcpy(b.name, saa->video_dev.name);
1289                         b.type = VID_TYPE_CAPTURE | VID_TYPE_OVERLAY |
1290                                 VID_TYPE_CLIPPING | VID_TYPE_FRAMERAM |
1291                                 VID_TYPE_SCALES;
1292                         b.channels = 1;
1293                         b.audios = 1;
1294                         b.maxwidth = 768;
1295                         b.maxheight = 576;
1296                         b.minwidth = 32;
1297                         b.minheight = 32;
1298                         if (copy_to_user(arg, &b, sizeof(b)))
1299                                 return -EFAULT;
1300                         return 0;
1301                 }
1302         case VIDIOCGPICT:
1303                 {
1304                         struct video_picture p = saa->picture;
1305                         if (saa->win.depth == 8)
1306                                 p.palette = VIDEO_PALETTE_HI240;
1307                         if (saa->win.depth == 15)
1308                                 p.palette = VIDEO_PALETTE_RGB555;
1309                         if (saa->win.depth == 16)
1310                                 p.palette = VIDEO_PALETTE_RGB565;
1311                         if (saa->win.depth == 24)
1312                                 p.palette = VIDEO_PALETTE_RGB24;
1313                         if (saa->win.depth == 32)
1314                                 p.palette = VIDEO_PALETTE_RGB32;
1315                         if (copy_to_user(arg, &p, sizeof(p)))
1316                                 return -EFAULT;
1317                         return 0;
1318                 }
1319         case VIDIOCSPICT:
1320                 {
1321                         struct video_picture p;
1322                         u32 format;
1323                         if (copy_from_user(&p, arg, sizeof(p)))
1324                                 return -EFAULT;
1325                         if (p.palette < ARRAY_SIZE(palette2fmt)) {
1326                                 format = palette2fmt[p.palette];
1327                                 saa->win.color_fmt = format;
1328                                 saawrite(format | 0x60,
1329                                         SAA7146_CLIP_FORMAT_CTRL);
1330                         }
1331                         saawrite(((p.brightness & 0xff00) << 16) |
1332                                 ((p.contrast & 0xfe00) << 7) |
1333                                 ((p.colour & 0xfe00) >> 9), SAA7146_BCS_CTRL);
1334                         saa->picture = p;
1335                         /* upload changed registers */
1336                         saawrite(((SAA7146_MC2_UPLD_HPS_H |
1337                                 SAA7146_MC2_UPLD_HPS_V) << 16) |
1338                                 SAA7146_MC2_UPLD_HPS_H |
1339                                 SAA7146_MC2_UPLD_HPS_V, SAA7146_MC2);
1340                         return 0;
1341                 }
1342         case VIDIOCSWIN:
1343                 {
1344                         struct video_window vw;
1345                         struct video_clip *vcp = NULL;
1346
1347                         if (copy_from_user(&vw, arg, sizeof(vw)))
1348                                 return -EFAULT;
1349
1350                         /* stop capture */
1351                         if (vw.flags || vw.width < 16 || vw.height < 16) {
1352                                 saawrite((SAA7146_MC1_TR_E_1 << 16),
1353                                         SAA7146_MC1);
1354                                 return -EINVAL;
1355                         }
1356                         /* 32-bit align start and adjust width */
1357                         if (saa->win.bpp < 4) {
1358                                 int i = vw.x;
1359                                 vw.x = (vw.x + 3) & ~3;
1360                                 i = vw.x - i;
1361                                 vw.width -= i;
1362                         }
1363                         saa->win.x = vw.x;
1364                         saa->win.y = vw.y;
1365                         saa->win.width = vw.width;
1366                         if (saa->win.width > 768)
1367                                 saa->win.width = 768;
1368                         saa->win.height = vw.height;
1369                         if (CurrentMode == VIDEO_MODE_NTSC) {
1370                                 if (saa->win.height > 480)
1371                                         saa->win.height = 480;
1372                         } else {
1373                                 if (saa->win.height > 576)
1374                                         saa->win.height = 576;
1375                         }
1376
1377                         /* stop capture */
1378                         saawrite((SAA7146_MC1_TR_E_1 << 16), SAA7146_MC1);
1379                         saa7146_set_winsize(saa);
1380
1381                         /*
1382                          *    Do any clips.
1383                          */
1384                         if (vw.clipcount < 0) {
1385                                 if (copy_from_user(saa->dmavid2, vw.clips,
1386                                                 VIDEO_CLIPMAP_SIZE))
1387                                         return -EFAULT;
1388                         } else if (vw.clipcount > 16384) {
1389                                 return -EINVAL;
1390                         } else if (vw.clipcount > 0) {
1391                                 vcp = vmalloc(sizeof(struct video_clip) *
1392                                         vw.clipcount);
1393                                 if (vcp == NULL)
1394                                         return -ENOMEM;
1395                                 if (copy_from_user(vcp, vw.clips,
1396                                                 sizeof(struct video_clip) *
1397                                                 vw.clipcount)) {
1398                                         vfree(vcp);
1399                                         return -EFAULT;
1400                                 }
1401                         } else  /* nothing clipped */
1402                                 memset(saa->dmavid2, 0, VIDEO_CLIPMAP_SIZE);
1403
1404                         make_clip_tab(saa, vcp, vw.clipcount);
1405                         if (vw.clipcount > 0)
1406                                 vfree(vcp);
1407
1408                         /* start capture & clip dma if we have an address */
1409                         if ((saa->cap & 3) && saa->win.vidadr != 0)
1410                                 saawrite(((SAA7146_MC1_TR_E_1 |
1411                                         SAA7146_MC1_TR_E_2) << 16) | 0xffff,
1412                                         SAA7146_MC1);
1413                         return 0;
1414                 }
1415         case VIDIOCGWIN:
1416                 {
1417                         struct video_window vw;
1418                         vw.x = saa->win.x;
1419                         vw.y = saa->win.y;
1420                         vw.width = saa->win.width;
1421                         vw.height = saa->win.height;
1422                         vw.chromakey = 0;
1423                         vw.flags = 0;
1424                         if (copy_to_user(arg, &vw, sizeof(vw)))
1425                                 return -EFAULT;
1426                         return 0;
1427                 }
1428         case VIDIOCCAPTURE:
1429                 {
1430                         int v;
1431                         if (copy_from_user(&v, arg, sizeof(v)))
1432                                 return -EFAULT;
1433                         if (v == 0) {
1434                                 saa->cap &= ~1;
1435                                 saawrite((SAA7146_MC1_TR_E_1 << 16),
1436                                         SAA7146_MC1);
1437                         } else {
1438                                 if (saa->win.vidadr == 0 || saa->win.width == 0
1439                                                 || saa->win.height == 0)
1440                                         return -EINVAL;
1441                                 saa->cap |= 1;
1442                                 saawrite((SAA7146_MC1_TR_E_1 << 16) | 0xffff,
1443                                         SAA7146_MC1);
1444                         }
1445                         return 0;
1446                 }
1447         case VIDIOCGFBUF:
1448                 {
1449                         struct video_buffer v;
1450                         v.base = (void *)saa->win.vidadr;
1451                         v.height = saa->win.sheight;
1452                         v.width = saa->win.swidth;
1453                         v.depth = saa->win.depth;
1454                         v.bytesperline = saa->win.bpl;
1455                         if (copy_to_user(arg, &v, sizeof(v)))
1456                                 return -EFAULT;
1457                         return 0;
1458
1459                 }
1460         case VIDIOCSFBUF:
1461                 {
1462                         struct video_buffer v;
1463                         if (!capable(CAP_SYS_ADMIN))
1464                                 return -EPERM;
1465                         if (copy_from_user(&v, arg, sizeof(v)))
1466                                 return -EFAULT;
1467                         if (v.depth != 8 && v.depth != 15 && v.depth != 16 &&
1468                             v.depth != 24 && v.depth != 32 && v.width > 16 &&
1469                             v.height > 16 && v.bytesperline > 16)
1470                                 return -EINVAL;
1471                         if (v.base)
1472                                 saa->win.vidadr = (unsigned long)v.base;
1473                         saa->win.sheight = v.height;
1474                         saa->win.swidth = v.width;
1475                         saa->win.bpp = ((v.depth + 7) & 0x38) / 8;
1476                         saa->win.depth = v.depth;
1477                         saa->win.bpl = v.bytesperline;
1478
1479                         DEBUG(printk("Display at %p is %d by %d, bytedepth %d, "
1480                                         "bpl %d\n", v.base, v.width, v.height,
1481                                         saa->win.bpp, saa->win.bpl));
1482                         saa7146_set_winsize(saa);
1483                         return 0;
1484                 }
1485         case VIDIOCKEY:
1486                 {
1487                         /* Will be handled higher up .. */
1488                         return 0;
1489                 }
1490
1491         case VIDIOCGAUDIO:
1492                 {
1493                         struct video_audio v;
1494                         v = saa->audio_dev;
1495                         v.flags &= ~(VIDEO_AUDIO_MUTE | VIDEO_AUDIO_MUTABLE);
1496                         v.flags |= VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME;
1497                         strcpy(v.name, "MPEG");
1498                         v.mode = VIDEO_SOUND_STEREO;
1499                         if (copy_to_user(arg, &v, sizeof(v)))
1500                                 return -EFAULT;
1501                         return 0;
1502                 }
1503         case VIDIOCSAUDIO:
1504                 {
1505                         struct video_audio v;
1506                         int i;
1507                         if (copy_from_user(&v, arg, sizeof(v)))
1508                                 return -EFAULT;
1509                         i = (~(v.volume >> 8)) & 0xff;
1510                         if (!HaveCS4341) {
1511                                 if (v.flags & VIDEO_AUDIO_MUTE)
1512                                         debiwrite(saa, debNormal,
1513                                                 IBM_MP2_FRNT_ATTEN, 0xffff, 2);
1514                                 if (!(v.flags & VIDEO_AUDIO_MUTE))
1515                                         debiwrite(saa, debNormal,
1516                                                 IBM_MP2_FRNT_ATTEN, 0x0000, 2);
1517                                 if (v.flags & VIDEO_AUDIO_VOLUME)
1518                                         debiwrite(saa, debNormal,
1519                                                 IBM_MP2_FRNT_ATTEN,
1520                                                 (i << 8) | i, 2);
1521                         } else {
1522                                 if (v.flags & VIDEO_AUDIO_MUTE)
1523                                         cs4341_setlevel(saa, 0xff, 0xff);
1524                                 if (!(v.flags & VIDEO_AUDIO_MUTE))
1525                                         cs4341_setlevel(saa, 0, 0);
1526                                 if (v.flags & VIDEO_AUDIO_VOLUME)
1527                                         cs4341_setlevel(saa, i, i);
1528                         }
1529                         saa->audio_dev = v;
1530                         return 0;
1531                 }
1532
1533         case VIDIOCGUNIT:
1534                 {
1535                         struct video_unit vu;
1536                         vu.video = saa->video_dev.minor;
1537                         vu.vbi = VIDEO_NO_UNIT;
1538                         vu.radio = VIDEO_NO_UNIT;
1539                         vu.audio = VIDEO_NO_UNIT;
1540                         vu.teletext = VIDEO_NO_UNIT;
1541                         if (copy_to_user(arg, &vu, sizeof(vu)))
1542                                 return -EFAULT;
1543                         return 0;
1544                 }
1545         case VIDIOCSPLAYMODE:
1546                 {
1547                         struct video_play_mode pmode;
1548                         if (copy_from_user((void *)&pmode, arg,
1549                                         sizeof(struct video_play_mode)))
1550                                 return -EFAULT;
1551                         switch (pmode.mode) {
1552                         case VID_PLAY_VID_OUT_MODE:
1553                                 if (pmode.p1 != VIDEO_MODE_NTSC &&
1554                                                 pmode.p1 != VIDEO_MODE_PAL)
1555                                         return -EINVAL;
1556                                 set_out_format(saa, pmode.p1);
1557                                 return 0;
1558                         case VID_PLAY_GENLOCK:
1559                                 debiwrite(saa, debNormal, XILINX_CTL0,
1560                                         pmode.p1 ? 0x8000 : 0x8080, 2);
1561                                 if (NewCard)
1562                                         set_genlock_offset(saa, pmode.p2);
1563                                 return 0;
1564                         case VID_PLAY_NORMAL:
1565                                 debiwrite(saa, debNormal,
1566                                         IBM_MP2_CHIP_CONTROL, ChipControl, 2);
1567                                 ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
1568                                 saa->playmode = pmode.mode;
1569                                 return 0;
1570                         case VID_PLAY_PAUSE:
1571                                 /* IBM removed the PAUSE command */
1572                                 /* they say use SINGLE_FRAME now */
1573                         case VID_PLAY_SINGLE_FRAME:
1574                                 ibm_send_command(saa, IBM_MP2_SINGLE_FRAME,0,0);
1575                                 if (saa->playmode == pmode.mode) {
1576                                         debiwrite(saa, debNormal,
1577                                                 IBM_MP2_CHIP_CONTROL,
1578                                                 ChipControl, 2);
1579                                 }
1580                                 saa->playmode = pmode.mode;
1581                                 return 0;
1582                         case VID_PLAY_FAST_FORWARD:
1583                                 ibm_send_command(saa, IBM_MP2_FAST_FORWARD,0,0);
1584                                 saa->playmode = pmode.mode;
1585                                 return 0;
1586                         case VID_PLAY_SLOW_MOTION:
1587                                 ibm_send_command(saa, IBM_MP2_SLOW_MOTION,
1588                                         pmode.p1, 0);
1589                                 saa->playmode = pmode.mode;
1590                                 return 0;
1591                         case VID_PLAY_IMMEDIATE_NORMAL:
1592                                 /* ensure transfers resume */
1593                                 debiwrite(saa, debNormal,
1594                                         IBM_MP2_CHIP_CONTROL, ChipControl, 2);
1595                                 ibm_send_command(saa, IBM_MP2_IMED_NORM_PLAY,
1596                                         0, 0);
1597                                 saa->playmode = VID_PLAY_NORMAL;
1598                                 return 0;
1599                         case VID_PLAY_SWITCH_CHANNELS:
1600                                 saa->audhead = saa->audtail = 0;
1601                                 saa->vidhead = saa->vidtail = 0;
1602                                 ibm_send_command(saa, IBM_MP2_FREEZE_FRAME,0,1);
1603                                 ibm_send_command(saa, IBM_MP2_RESET_AUD_RATE,
1604                                         0, 1);
1605                                 debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
1606                                         0, 2);
1607                                 ibm_send_command(saa, IBM_MP2_CHANNEL_SWITCH,
1608                                         0, 1);
1609                                 debiwrite(saa, debNormal, IBM_MP2_CHIP_CONTROL,
1610                                         ChipControl, 2);
1611                                 ibm_send_command(saa, IBM_MP2_PLAY, 0, 0);
1612                                 saa->playmode = VID_PLAY_NORMAL;
1613                                 return 0;
1614                         case VID_PLAY_FREEZE_FRAME:
1615                                 ibm_send_command(saa, IBM_MP2_FREEZE_FRAME,0,0);
1616                                 saa->playmode = pmode.mode;
1617                                 return 0;
1618                         case VID_PLAY_STILL_MODE:
1619                                 ibm_send_command(saa, IBM_MP2_SET_STILL_MODE,
1620                                         0, 0);
1621                                 saa->playmode = pmode.mode;
1622                                 return 0;
1623                         case VID_PLAY_MASTER_MODE:
1624                                 if (pmode.p1 == VID_PLAY_MASTER_NONE)
1625                                         saa->boardcfg[1] = 0x13;
1626                                 else if (pmode.p1 == VID_PLAY_MASTER_VIDEO)
1627                                         saa->boardcfg[1] = 0x23;
1628                                 else if (pmode.p1 == VID_PLAY_MASTER_AUDIO)
1629                                         saa->boardcfg[1] = 0x43;
1630                                 else
1631                                         return -EINVAL;
1632                                 debiwrite(saa, debNormal,
1633                                           IBM_MP2_CHIP_CONTROL, ChipControl, 2);
1634                                 return 0;
1635                         case VID_PLAY_ACTIVE_SCANLINES:
1636                                 if (CurrentMode == VIDEO_MODE_PAL) {
1637                                         if (pmode.p1 < 1 || pmode.p2 > 625)
1638                                                 return -EINVAL;
1639                                         saa->boardcfg[5] = pmode.p1;
1640                                         saa->boardcfg[55] = (pmode.p1 +
1641                                                 (pmode.p2 / 2) - 1) & 0xff;
1642                                 } else {
1643                                         if (pmode.p1 < 4 || pmode.p2 > 525)
1644                                                 return -EINVAL;
1645                                         saa->boardcfg[4] = pmode.p1;
1646                                         saa->boardcfg[54] = (pmode.p1 +
1647                                                 (pmode.p2 / 2) - 4) & 0xff;
1648                                 }
1649                                 set_out_format(saa, CurrentMode);
1650                         case VID_PLAY_RESET:
1651                                 return do_ibm_reset(saa);
1652                         case VID_PLAY_END_MARK:
1653                                 if (saa->endmarktail < saa->endmarkhead) {
1654                                         if (saa->endmarkhead -
1655                                                         saa->endmarktail < 2)
1656                                                 return -ENOSPC;
1657                                 } else if (saa->endmarkhead <=saa->endmarktail){
1658                                         if (saa->endmarktail - saa->endmarkhead
1659                                                         > (MAX_MARKS - 2))
1660                                                 return -ENOSPC;
1661                                 } else
1662                                         return -ENOSPC;
1663                                 saa->endmark[saa->endmarktail] = saa->audtail;
1664                                 saa->endmarktail++;
1665                                 if (saa->endmarktail >= MAX_MARKS)
1666                                         saa->endmarktail = 0;
1667                         }
1668                         return -EINVAL;
1669                 }
1670         case VIDIOCSWRITEMODE:
1671                 {
1672                         int mode;
1673                         if (copy_from_user((void *)&mode, arg, sizeof(int)))
1674                                 return -EFAULT;
1675                         if (mode == VID_WRITE_MPEG_AUD ||
1676                                         mode == VID_WRITE_MPEG_VID ||
1677                                         mode == VID_WRITE_CC ||
1678                                         mode == VID_WRITE_TTX ||
1679                                         mode == VID_WRITE_OSD) {
1680                                 saa->writemode = mode;
1681                                 return 0;
1682                         }
1683                         return -EINVAL;
1684                 }
1685         case VIDIOCSMICROCODE:
1686                 {
1687                         struct video_code ucode;
1688                         __u8 *udata;
1689                         int i;
1690                         if (copy_from_user(&ucode, arg, sizeof(ucode)))
1691                                 return -EFAULT;
1692                         if (ucode.datasize > 65536 || ucode.datasize < 1024 ||
1693                                         strncmp(ucode.loadwhat, "dec", 3))
1694                                 return -EINVAL;
1695                         if ((udata = vmalloc(ucode.datasize)) == NULL)
1696                                 return -ENOMEM;
1697                         if (copy_from_user(udata, ucode.data, ucode.datasize)) {
1698                                 vfree(udata);
1699                                 return -EFAULT;
1700                         }
1701                         ucode.data = udata;
1702                         if (!strncmp(ucode.loadwhat, "decoder.aud", 11) ||
1703                                 !strncmp(ucode.loadwhat, "decoder.vid", 11))
1704                                 i = initialize_ibmmpeg2(&ucode);
1705                         else
1706                                 i = initialize_fpga(&ucode);
1707                         vfree(udata);
1708                         if (i)
1709                                 return -EINVAL;
1710                         return 0;
1711
1712                 }
1713         case VIDIOCGCHAN:       /* this makes xawtv happy */
1714                 {
1715                         struct video_channel v;
1716                         if (copy_from_user(&v, arg, sizeof(v)))
1717                                 return -EFAULT;
1718                         v.flags = VIDEO_VC_AUDIO;
1719                         v.tuners = 0;
1720                         v.type = VID_TYPE_MPEG_DECODER;
1721                         v.norm = CurrentMode;
1722                         strcpy(v.name, "MPEG2");
1723                         if (copy_to_user(arg, &v, sizeof(v)))
1724                                 return -EFAULT;
1725                         return 0;
1726                 }
1727         case VIDIOCSCHAN:       /* this makes xawtv happy */
1728                 {
1729                         struct video_channel v;
1730                         if (copy_from_user(&v, arg, sizeof(v)))
1731                                 return -EFAULT;
1732                         /* do nothing */
1733                         return 0;
1734                 }
1735         default:
1736                 return -ENOIOCTLCMD;
1737         }
1738         return 0;
1739 }
1740
1741 static int saa_mmap(struct file *file, struct vm_area_struct *vma)
1742 {
1743         struct saa7146 *saa = file->private_data;
1744         printk(KERN_DEBUG "stradis%d: saa_mmap called\n", saa->nr);
1745         return -EINVAL;
1746 }
1747
1748 static ssize_t saa_read(struct file *file, char __user * buf,
1749         size_t count, loff_t * ppos)
1750 {
1751         return -EINVAL;
1752 }
1753
1754 static ssize_t saa_write(struct file *file, const char __user * buf,
1755         size_t count, loff_t * ppos)
1756 {
1757         struct saa7146 *saa = file->private_data;
1758         unsigned long todo = count;
1759         int blocksize, split;
1760         unsigned long flags;
1761
1762         while (todo > 0) {
1763                 if (saa->writemode == VID_WRITE_MPEG_AUD) {
1764                         spin_lock_irqsave(&saa->lock, flags);
1765                         if (saa->audhead <= saa->audtail)
1766                                 blocksize = 65536 -
1767                                         (saa->audtail - saa->audhead);
1768                         else
1769                                 blocksize = saa->audhead - saa->audtail;
1770                         spin_unlock_irqrestore(&saa->lock, flags);
1771                         if (blocksize < 16384) {
1772                                 saawrite(SAA7146_PSR_DEBI_S |
1773                                         SAA7146_PSR_PIN1, SAA7146_IER);
1774                                 saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
1775                                 /* wait for buffer space to open */
1776                                 interruptible_sleep_on(&saa->audq);
1777                         }
1778                         spin_lock_irqsave(&saa->lock, flags);
1779                         if (saa->audhead <= saa->audtail) {
1780                                 blocksize = 65536 -
1781                                         (saa->audtail - saa->audhead);
1782                                 split = 65536 - saa->audtail;
1783                         } else {
1784                                 blocksize = saa->audhead - saa->audtail;
1785                                 split = 65536;
1786                         }
1787                         spin_unlock_irqrestore(&saa->lock, flags);
1788                         blocksize--;
1789                         if (blocksize > todo)
1790                                 blocksize = todo;
1791                         /* double check that we really have space */
1792                         if (!blocksize)
1793                                 return -ENOSPC;
1794                         if (split < blocksize) {
1795                                 if (copy_from_user(saa->audbuf +
1796                                                 saa->audtail, buf, split))
1797                                         return -EFAULT;
1798                                 buf += split;
1799                                 todo -= split;
1800                                 blocksize -= split;
1801                                 saa->audtail = 0;
1802                         }
1803                         if (copy_from_user(saa->audbuf + saa->audtail, buf,
1804                                         blocksize))
1805                                 return -EFAULT;
1806                         saa->audtail += blocksize;
1807                         todo -= blocksize;
1808                         buf += blocksize;
1809                         saa->audtail &= 0xffff;
1810                 } else if (saa->writemode == VID_WRITE_MPEG_VID) {
1811                         spin_lock_irqsave(&saa->lock, flags);
1812                         if (saa->vidhead <= saa->vidtail)
1813                                 blocksize = 524288 -
1814                                         (saa->vidtail - saa->vidhead);
1815                         else
1816                                 blocksize = saa->vidhead - saa->vidtail;
1817                         spin_unlock_irqrestore(&saa->lock, flags);
1818                         if (blocksize < 65536) {
1819                                 saawrite(SAA7146_PSR_DEBI_S |
1820                                         SAA7146_PSR_PIN1, SAA7146_IER);
1821                                 saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
1822                                 /* wait for buffer space to open */
1823                                 interruptible_sleep_on(&saa->vidq);
1824                         }
1825                         spin_lock_irqsave(&saa->lock, flags);
1826                         if (saa->vidhead <= saa->vidtail) {
1827                                 blocksize = 524288 -
1828                                         (saa->vidtail - saa->vidhead);
1829                                 split = 524288 - saa->vidtail;
1830                         } else {
1831                                 blocksize = saa->vidhead - saa->vidtail;
1832                                 split = 524288;
1833                         }
1834                         spin_unlock_irqrestore(&saa->lock, flags);
1835                         blocksize--;
1836                         if (blocksize > todo)
1837                                 blocksize = todo;
1838                         /* double check that we really have space */
1839                         if (!blocksize)
1840                                 return -ENOSPC;
1841                         if (split < blocksize) {
1842                                 if (copy_from_user(saa->vidbuf +
1843                                                 saa->vidtail, buf, split))
1844                                         return -EFAULT;
1845                                 buf += split;
1846                                 todo -= split;
1847                                 blocksize -= split;
1848                                 saa->vidtail = 0;
1849                         }
1850                         if (copy_from_user(saa->vidbuf + saa->vidtail, buf,
1851                                         blocksize))
1852                                 return -EFAULT;
1853                         saa->vidtail += blocksize;
1854                         todo -= blocksize;
1855                         buf += blocksize;
1856                         saa->vidtail &= 0x7ffff;
1857                 } else if (saa->writemode == VID_WRITE_OSD) {
1858                         if (count > 131072)
1859                                 return -ENOSPC;
1860                         if (copy_from_user(saa->osdbuf, buf, count))
1861                                 return -EFAULT;
1862                         buf += count;
1863                         saa->osdhead = 0;
1864                         saa->osdtail = count;
1865                         debiwrite(saa, debNormal, IBM_MP2_OSD_ADDR, 0, 2);
1866                         debiwrite(saa, debNormal, IBM_MP2_OSD_LINK_ADDR, 0, 2);
1867                         debiwrite(saa, debNormal, IBM_MP2_MASK0, 0xc00d, 2);
1868                         debiwrite(saa, debNormal, IBM_MP2_DISP_MODE,
1869                                 debiread(saa, debNormal,
1870                                         IBM_MP2_DISP_MODE, 2) | 1, 2);
1871                         /* trigger osd data transfer */
1872                         saawrite(SAA7146_PSR_DEBI_S |
1873                                  SAA7146_PSR_PIN1, SAA7146_IER);
1874                         saawrite(SAA7146_PSR_PIN1, SAA7146_PSR);
1875                 }
1876         }
1877         return count;
1878 }
1879
1880 static int saa_open(struct inode *inode, struct file *file)
1881 {
1882         struct video_device *vdev = video_devdata(file);
1883         struct saa7146 *saa = container_of(vdev, struct saa7146, video_dev);
1884
1885         lock_kernel();
1886         file->private_data = saa;
1887
1888         saa->user++;
1889         if (saa->user > 1) {
1890                 unlock_kernel();
1891                 return 0;       /* device open already, don't reset */
1892         }
1893         saa->writemode = VID_WRITE_MPEG_VID;    /* default to video */
1894         unlock_kernel();
1895         return 0;
1896 }
1897
1898 static int saa_release(struct inode *inode, struct file *file)
1899 {
1900         struct saa7146 *saa = file->private_data;
1901         saa->user--;
1902
1903         if (saa->user > 0)      /* still someone using device */
1904                 return 0;
1905         saawrite(0x007f0000, SAA7146_MC1);      /* stop all overlay dma */
1906         return 0;
1907 }
1908
1909 static const struct file_operations saa_fops = {
1910         .owner = THIS_MODULE,
1911         .open = saa_open,
1912         .release = saa_release,
1913         .ioctl = saa_ioctl,
1914 #ifdef CONFIG_COMPAT
1915         .compat_ioctl = v4l_compat_ioctl32,
1916 #endif
1917         .read = saa_read,
1918         .llseek = no_llseek,
1919         .write = saa_write,
1920         .mmap = saa_mmap,
1921 };
1922
1923 /* template for video_device-structure */
1924 static struct video_device saa_template = {
1925         .name = "SAA7146A",
1926         .fops = &saa_fops,
1927         .minor = -1,
1928         .release = video_device_release_empty,
1929 };
1930
1931 static int __devinit configure_saa7146(struct pci_dev *pdev, int num)
1932 {
1933         int retval;
1934         struct saa7146 *saa = pci_get_drvdata(pdev);
1935
1936         saa->endmarkhead = saa->endmarktail = 0;
1937         saa->win.x = saa->win.y = 0;
1938         saa->win.width = saa->win.cropwidth = 720;
1939         saa->win.height = saa->win.cropheight = 480;
1940         saa->win.cropx = saa->win.cropy = 0;
1941         saa->win.bpp = 2;
1942         saa->win.depth = 16;
1943         saa->win.color_fmt = palette2fmt[VIDEO_PALETTE_RGB565];
1944         saa->win.bpl = 1024 * saa->win.bpp;
1945         saa->win.swidth = 1024;
1946         saa->win.sheight = 768;
1947         saa->picture.brightness = 32768;
1948         saa->picture.contrast = 38768;
1949         saa->picture.colour = 32768;
1950         saa->cap = 0;
1951         saa->nr = num;
1952         saa->playmode = VID_PLAY_NORMAL;
1953         memset(saa->boardcfg, 0, 64);   /* clear board config area */
1954         saa->saa7146_mem = NULL;
1955         saa->dmavid1 = saa->dmavid2 = saa->dmavid3 = saa->dmaa1in =
1956             saa->dmaa1out = saa->dmaa2in = saa->dmaa2out =
1957             saa->pagevid1 = saa->pagevid2 = saa->pagevid3 = saa->pagea1in =
1958             saa->pagea1out = saa->pagea2in = saa->pagea2out =
1959             saa->pagedebi = saa->dmaRPS1 = saa->dmaRPS2 = saa->pageRPS1 =
1960             saa->pageRPS2 = NULL;
1961         saa->audbuf = saa->vidbuf = saa->osdbuf = saa->dmadebi = NULL;
1962         saa->audhead = saa->vidtail = 0;
1963
1964         init_waitqueue_head(&saa->i2cq);
1965         init_waitqueue_head(&saa->audq);
1966         init_waitqueue_head(&saa->debiq);
1967         init_waitqueue_head(&saa->vidq);
1968         spin_lock_init(&saa->lock);
1969
1970         retval = pci_enable_device(pdev);
1971         if (retval) {
1972                 dev_err(&pdev->dev, "%d: pci_enable_device failed!\n", num);
1973                 goto err;
1974         }
1975
1976         saa->id = pdev->device;
1977         saa->irq = pdev->irq;
1978         saa->video_dev.minor = -1;
1979         saa->saa7146_adr = pci_resource_start(pdev, 0);
1980         pci_read_config_byte(pdev, PCI_CLASS_REVISION, &saa->revision);
1981
1982         saa->saa7146_mem = ioremap(saa->saa7146_adr, 0x200);
1983         if (saa->saa7146_mem == NULL) {
1984                 dev_err(&pdev->dev, "%d: ioremap failed!\n", num);
1985                 retval = -EIO;
1986                 goto err;
1987         }
1988
1989         memcpy(&saa->video_dev, &saa_template, sizeof(saa_template));
1990         saawrite(0, SAA7146_IER);       /* turn off all interrupts */
1991
1992         retval = request_irq(saa->irq, saa7146_irq, IRQF_SHARED | IRQF_DISABLED,
1993                 "stradis", saa);
1994         if (retval == -EINVAL)
1995                 dev_err(&pdev->dev, "%d: Bad irq number or handler\n", num);
1996         else if (retval == -EBUSY)
1997                 dev_err(&pdev->dev, "%d: IRQ %ld busy, change your PnP config "
1998                         "in BIOS\n", num, saa->irq);
1999         if (retval < 0)
2000                 goto errio;
2001
2002         pci_set_master(pdev);
2003         retval = video_register_device(&saa->video_dev, VFL_TYPE_GRABBER,
2004                 video_nr);
2005         if (retval < 0) {
2006                 dev_err(&pdev->dev, "%d: error in registering video device!\n",
2007                         num);
2008                 goto errio;
2009         }
2010
2011         return 0;
2012 errio:
2013         iounmap(saa->saa7146_mem);
2014 err:
2015         return retval;
2016 }
2017
2018 static int __devinit init_saa7146(struct pci_dev *pdev)
2019 {
2020         struct saa7146 *saa = pci_get_drvdata(pdev);
2021
2022         saa->user = 0;
2023         /* reset the saa7146 */
2024         saawrite(0xffff0000, SAA7146_MC1);
2025         mdelay(5);
2026         /* enable debi and i2c transfers and pins */
2027         saawrite(((SAA7146_MC1_EDP | SAA7146_MC1_EI2C |
2028                    SAA7146_MC1_TR_E_DEBI) << 16) | 0xffff, SAA7146_MC1);
2029         /* ensure proper state of chip */
2030         saawrite(0x00000000, SAA7146_PAGE1);
2031         saawrite(0x00f302c0, SAA7146_NUM_LINE_BYTE1);
2032         saawrite(0x00000000, SAA7146_PAGE2);
2033         saawrite(0x01400080, SAA7146_NUM_LINE_BYTE2);
2034         saawrite(0x00000000, SAA7146_DD1_INIT);
2035         saawrite(0x00000000, SAA7146_DD1_STREAM_B);
2036         saawrite(0x00000000, SAA7146_DD1_STREAM_A);
2037         saawrite(0x00000000, SAA7146_BRS_CTRL);
2038         saawrite(0x80400040, SAA7146_BCS_CTRL);
2039         saawrite(0x0000e000 /*| (1<<29) */ , SAA7146_HPS_CTRL);
2040         saawrite(0x00000060, SAA7146_CLIP_FORMAT_CTRL);
2041         saawrite(0x00000000, SAA7146_ACON1);
2042         saawrite(0x00000000, SAA7146_ACON2);
2043         saawrite(0x00000600, SAA7146_I2C_STATUS);
2044         saawrite(((SAA7146_MC2_UPLD_D1_B | SAA7146_MC2_UPLD_D1_A |
2045                 SAA7146_MC2_UPLD_BRS | SAA7146_MC2_UPLD_HPS_H |
2046                 SAA7146_MC2_UPLD_HPS_V | SAA7146_MC2_UPLD_DMA2 |
2047                 SAA7146_MC2_UPLD_DMA1 | SAA7146_MC2_UPLD_I2C) << 16) | 0xffff,
2048                 SAA7146_MC2);
2049         /* setup arbitration control registers */
2050         saawrite(0x1412121a, SAA7146_PCI_BT_V1);
2051
2052         /* allocate 32k dma buffer + 4k for page table */
2053         if ((saa->dmadebi = kmalloc(32768 + 4096, GFP_KERNEL)) == NULL) {
2054                 dev_err(&pdev->dev, "%d: debi kmalloc failed\n", saa->nr);
2055                 goto err;
2056         }
2057 #if 0
2058         saa->pagedebi = saa->dmadebi + 32768;   /* top 4k is for mmu */
2059         saawrite(virt_to_bus(saa->pagedebi) /*|0x800 */ , SAA7146_DEBI_PAGE);
2060         for (i = 0; i < 12; i++)        /* setup mmu page table */
2061                 saa->pagedebi[i] = virt_to_bus((saa->dmadebi + i * 4096));
2062 #endif
2063         saa->audhead = saa->vidhead = saa->osdhead = 0;
2064         saa->audtail = saa->vidtail = saa->osdtail = 0;
2065         if (saa->vidbuf == NULL && (saa->vidbuf = vmalloc(524288)) == NULL) {
2066                 dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
2067                 goto err;
2068         }
2069         if (saa->audbuf == NULL && (saa->audbuf = vmalloc(65536)) == NULL) {
2070                 dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
2071                 goto errfree;
2072         }
2073         if (saa->osdbuf == NULL && (saa->osdbuf = vmalloc(131072)) == NULL) {
2074                 dev_err(&pdev->dev, "%d: malloc failed\n", saa->nr);
2075                 goto errfree;
2076         }
2077         /* allocate 81920 byte buffer for clipping */
2078         if ((saa->dmavid2 = kzalloc(VIDEO_CLIPMAP_SIZE, GFP_KERNEL)) == NULL) {
2079                 dev_err(&pdev->dev, "%d: clip kmalloc failed\n", saa->nr);
2080                 goto errfree;
2081         }
2082         /* setup clipping registers */
2083         saawrite(virt_to_bus(saa->dmavid2), SAA7146_BASE_EVEN2);
2084         saawrite(virt_to_bus(saa->dmavid2) + 128, SAA7146_BASE_ODD2);
2085         saawrite(virt_to_bus(saa->dmavid2) + VIDEO_CLIPMAP_SIZE,
2086                  SAA7146_PROT_ADDR2);
2087         saawrite(256, SAA7146_PITCH2);
2088         saawrite(4, SAA7146_PAGE2);     /* dma direction: read, no byteswap */
2089         saawrite(((SAA7146_MC2_UPLD_DMA2) << 16) | SAA7146_MC2_UPLD_DMA2,
2090                  SAA7146_MC2);
2091         I2CBusScan(saa);
2092
2093         return 0;
2094 errfree:
2095         vfree(saa->osdbuf);
2096         vfree(saa->audbuf);
2097         vfree(saa->vidbuf);
2098         saa->audbuf = saa->osdbuf = saa->vidbuf = NULL;
2099 err:
2100         return -ENOMEM;
2101 }
2102
2103 static void stradis_release_saa(struct pci_dev *pdev)
2104 {
2105         u8 command;
2106         struct saa7146 *saa = pci_get_drvdata(pdev);
2107
2108         /* turn off all capturing, DMA and IRQs */
2109         saawrite(0xffff0000, SAA7146_MC1);      /* reset chip */
2110         saawrite(0, SAA7146_MC2);
2111         saawrite(0, SAA7146_IER);
2112         saawrite(0xffffffffUL, SAA7146_ISR);
2113
2114         /* disable PCI bus-mastering */
2115         pci_read_config_byte(pdev, PCI_COMMAND, &command);
2116         command &= ~PCI_COMMAND_MASTER;
2117         pci_write_config_byte(pdev, PCI_COMMAND, command);
2118
2119         /* unmap and free memory */
2120         saa->audhead = saa->audtail = saa->osdhead = 0;
2121         saa->vidhead = saa->vidtail = saa->osdtail = 0;
2122         vfree(saa->vidbuf);
2123         vfree(saa->audbuf);
2124         vfree(saa->osdbuf);
2125         kfree(saa->dmavid2);
2126         saa->audbuf = saa->vidbuf = saa->osdbuf = NULL;
2127         saa->dmavid2 = NULL;
2128         kfree(saa->dmadebi);
2129         kfree(saa->dmavid1);
2130         kfree(saa->dmavid3);
2131         kfree(saa->dmaa1in);
2132         kfree(saa->dmaa1out);
2133         kfree(saa->dmaa2in);
2134         kfree(saa->dmaa2out);
2135         kfree(saa->dmaRPS1);
2136         kfree(saa->dmaRPS2);
2137         free_irq(saa->irq, saa);
2138         if (saa->saa7146_mem)
2139                 iounmap(saa->saa7146_mem);
2140         if (saa->video_dev.minor != -1)
2141                 video_unregister_device(&saa->video_dev);
2142 }
2143
2144 static int __devinit stradis_probe(struct pci_dev *pdev,
2145         const struct pci_device_id *ent)
2146 {
2147         int retval = -EINVAL;
2148
2149         if (saa_num >= SAA7146_MAX)
2150                 goto err;
2151
2152         if (!pdev->subsystem_vendor)
2153                 dev_info(&pdev->dev, "%d: rev1 decoder\n", saa_num);
2154         else
2155                 dev_info(&pdev->dev, "%d: SDM2xx found\n", saa_num);
2156
2157         pci_set_drvdata(pdev, &saa7146s[saa_num]);
2158
2159         retval = configure_saa7146(pdev, saa_num);
2160         if (retval) {
2161                 dev_err(&pdev->dev, "%d: error in configuring\n", saa_num);
2162                 goto err;
2163         }
2164
2165         if (init_saa7146(pdev) < 0) {
2166                 dev_err(&pdev->dev, "%d: error in initialization\n", saa_num);
2167                 retval = -EIO;
2168                 goto errrel;
2169         }
2170
2171         saa_num++;
2172
2173         return 0;
2174 errrel:
2175         stradis_release_saa(pdev);
2176 err:
2177         return retval;
2178 }
2179
2180 static void __devexit stradis_remove(struct pci_dev *pdev)
2181 {
2182         stradis_release_saa(pdev);
2183 }
2184
2185 static struct pci_device_id stradis_pci_tbl[] = {
2186         { PCI_DEVICE(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146) },
2187         { 0 }
2188 };
2189
2190
2191 static struct pci_driver stradis_driver = {
2192         .name = "stradis",
2193         .id_table = stradis_pci_tbl,
2194         .probe = stradis_probe,
2195         .remove = __devexit_p(stradis_remove)
2196 };
2197
2198 static int __init stradis_init(void)
2199 {
2200         int retval;
2201
2202         saa_num = 0;
2203
2204         retval = pci_register_driver(&stradis_driver);
2205         if (retval)
2206                 printk(KERN_ERR "stradis: Unable to register pci driver.\n");
2207
2208         return retval;
2209 }
2210
2211 static void __exit stradis_exit(void)
2212 {
2213         pci_unregister_driver(&stradis_driver);
2214         printk(KERN_INFO "stradis: module cleanup complete\n");
2215 }
2216
2217 module_init(stradis_init);
2218 module_exit(stradis_exit);