drivers/media/dvb/bt8xx/bt878.c

   1 /*
   2  * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
   3  *
   4  * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>
   5  *
   6  * large parts based on the bttv driver
   7  * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@metzlerbros.de)
   8  *                        & Marcus Metzler (mocm@metzlerbros.de)
   9  * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
  27  *
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/pci.h>
  33 #include <asm/io.h>
  34 #include <linux/ioport.h>
  35 #include <asm/pgtable.h>
  36 #include <asm/page.h>
  37 #include <linux/types.h>
  38 #include <linux/interrupt.h>
  39 #include <linux/kmod.h>
  40 #include <linux/vmalloc.h>
  41 #include <linux/init.h>
  42
  43 #include "dmxdev.h"
  44 #include "dvbdev.h"
  45 #include "bt878.h"
  46 #include "dst_priv.h"
  47
  48
  49 /**************************************/
  50 /* Miscellaneous utility  definitions */
  51 /**************************************/
  52
  53 static unsigned int bt878_verbose = 1;
  54 static unsigned int bt878_debug;
  55
  56 module_param_named(verbose, bt878_verbose, int, 0444);
  57 MODULE_PARM_DESC(verbose,
  58                  "verbose startup messages, default is 1 (yes)");
  59 module_param_named(debug, bt878_debug, int, 0644);
  60 MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");
  61
  62 int bt878_num;
  63 struct bt878 bt878[BT878_MAX];
  64
  65 EXPORT_SYMBOL(bt878_num);
  66 EXPORT_SYMBOL(bt878);
  67
  68 #define btwrite(dat,adr)    bmtwrite((dat), (bt->bt878_mem+(adr)))
  69 #define btread(adr)         bmtread(bt->bt878_mem+(adr))
  70
  71 #define btand(dat,adr)      btwrite((dat) & btread(adr), adr)
  72 #define btor(dat,adr)       btwrite((dat) | btread(adr), adr)
  73 #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
  74
  75 #if defined(dprintk)
  76 #undef dprintk
  77 #endif
  78 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
  79 #define dprintk if(bt878_debug) printk
  80 =======
  81 #define dprintk(fmt, arg...) \
  82         do { \
  83                 if (bt878_debug) \
  84                         printk(KERN_DEBUG fmt, ##arg); \
  85         } while (0)
  86 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
  87
  88 static void bt878_mem_free(struct bt878 *bt)
  89 {
  90         if (bt->buf_cpu) {
  91                 pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
  92                                     bt->buf_dma);
  93                 bt->buf_cpu = NULL;
  94         }
  95
  96         if (bt->risc_cpu) {
  97                 pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
  98                                     bt->risc_dma);
  99                 bt->risc_cpu = NULL;
 100         }
 101 }
 102
 103 static int bt878_mem_alloc(struct bt878 *bt)
 104 {
 105         if (!bt->buf_cpu) {
 106                 bt->buf_size = 128 * 1024;
 107
 108                 bt->buf_cpu =
 109                     pci_alloc_consistent(bt->dev, bt->buf_size,
 110                                          &bt->buf_dma);
 111
 112                 if (!bt->buf_cpu)
 113                         return -ENOMEM;
 114
 115                 memset(bt->buf_cpu, 0, bt->buf_size);
 116         }
 117
 118         if (!bt->risc_cpu) {
 119                 bt->risc_size = PAGE_SIZE;
 120                 bt->risc_cpu =
 121                     pci_alloc_consistent(bt->dev, bt->risc_size,
 122                                          &bt->risc_dma);
 123
 124                 if (!bt->risc_cpu) {
 125                         bt878_mem_free(bt);
 126                         return -ENOMEM;
 127                 }
 128
 129                 memset(bt->risc_cpu, 0, bt->risc_size);
 130         }
 131
 132         return 0;
 133 }
 134
 135 /* RISC instructions */
 136 #define RISC_WRITE              (0x01 << 28)
 137 #define RISC_JUMP               (0x07 << 28)
 138 #define RISC_SYNC               (0x08 << 28)
 139
 140 /* RISC bits */
 141 #define RISC_WR_SOL             (1 << 27)
 142 #define RISC_WR_EOL             (1 << 26)
 143 #define RISC_IRQ                (1 << 24)
 144 #define RISC_STATUS(status)     ((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
 145 #define RISC_SYNC_RESYNC        (1 << 15)
 146 #define RISC_SYNC_FM1           0x06
 147 #define RISC_SYNC_VRO           0x0C
 148
 149 #define RISC_FLUSH()            bt->risc_pos = 0
 150 #define RISC_INSTR(instr)       bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
 151
 152 static int bt878_make_risc(struct bt878 *bt)
 153 {
 154         bt->block_bytes = bt->buf_size >> 4;
 155         bt->block_count = 1 << 4;
 156         bt->line_bytes = bt->block_bytes;
 157         bt->line_count = bt->block_count;
 158
 159         while (bt->line_bytes > 4095) {
 160                 bt->line_bytes >>= 1;
 161                 bt->line_count <<= 1;
 162         }
 163
 164         if (bt->line_count > 255) {
 165 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 166                 printk("bt878: buffer size error!\n");
 167 =======
 168                 printk(KERN_ERR "bt878: buffer size error!\n");
 169 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 170                 return -EINVAL;
 171         }
 172         return 0;
 173 }
 174
 175
 176 static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
 177 {
 178         u32 buf_pos = 0;
 179         u32 line;
 180
 181         RISC_FLUSH();
 182         RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
 183         RISC_INSTR(0);
 184
 185         dprintk("bt878: risc len lines %u, bytes per line %u\n",
 186                         bt->line_count, bt->line_bytes);
 187         for (line = 0; line < bt->line_count; line++) {
 188                 // At the beginning of every block we issue an IRQ with previous (finished) block number set
 189                 if (!(buf_pos % bt->block_bytes))
 190                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
 191                                    RISC_IRQ |
 192                                    RISC_STATUS(((buf_pos /
 193                                                  bt->block_bytes) +
 194                                                 (bt->block_count -
 195                                                  1)) %
 196                                                bt->block_count) | bt->
 197                                    line_bytes);
 198                 else
 199                         RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
 200                                    bt->line_bytes);
 201                 RISC_INSTR(bt->buf_dma + buf_pos);
 202                 buf_pos += bt->line_bytes;
 203         }
 204
 205         RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
 206         RISC_INSTR(0);
 207
 208         RISC_INSTR(RISC_JUMP);
 209         RISC_INSTR(bt->risc_dma);
 210
 211         btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
 212 }
 213
 214 /*****************************/
 215 /* Start/Stop grabbing funcs */
 216 /*****************************/
 217
 218 void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
 219                 u32 irq_err_ignore)
 220 {
 221         u32 int_mask;
 222
 223         dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
 224         /* complete the writing of the risc dma program now we have
 225          * the card specifics
 226          */
 227         bt878_risc_program(bt, op_sync_orin);
 228         controlreg &= ~0x1f;
 229         controlreg |= 0x1b;
 230
 231         btwrite(bt->risc_dma, BT878_ARISC_START);
 232
 233         /* original int mask had :
 234          *    6    2    8    4    0
 235          * 1111 1111 1000 0000 0000
 236          * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
 237          * Hacked for DST to:
 238          * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
 239          */
 240         int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
 241                 BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
 242                 BT878_AFBUS | BT878_ARISCI;
 243
 244
 245         /* ignore pesky bits */
 246         int_mask &= ~irq_err_ignore;
 247
 248         btwrite(int_mask, BT878_AINT_MASK);
 249         btwrite(controlreg, BT878_AGPIO_DMA_CTL);
 250 }
 251
 252 void bt878_stop(struct bt878 *bt)
 253 {
 254         u32 stat;
 255         int i = 0;
 256
 257         dprintk("bt878 debug: bt878_stop\n");
 258
 259         btwrite(0, BT878_AINT_MASK);
 260         btand(~0x13, BT878_AGPIO_DMA_CTL);
 261
 262         do {
 263                 stat = btread(BT878_AINT_STAT);
 264                 if (!(stat & BT878_ARISC_EN))
 265                         break;
 266                 i++;
 267         } while (i < 500);
 268
 269         dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
 270                 bt->nr, i, stat);
 271 }
 272
 273 EXPORT_SYMBOL(bt878_start);
 274 EXPORT_SYMBOL(bt878_stop);
 275
 276 /*****************************/
 277 /* Interrupt service routine */
 278 /*****************************/
 279
 280 static irqreturn_t bt878_irq(int irq, void *dev_id)
 281 {
 282         u32 stat, astat, mask;
 283         int count;
 284         struct bt878 *bt;
 285
 286         bt = (struct bt878 *) dev_id;
 287
 288         count = 0;
 289         while (1) {
 290                 stat = btread(BT878_AINT_STAT);
 291                 mask = btread(BT878_AINT_MASK);
 292                 if (!(astat = (stat & mask)))
 293                         return IRQ_NONE;        /* this interrupt is not for me */
 294 /*              dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
 295                 btwrite(astat, BT878_AINT_STAT);        /* try to clear interrupt condition */
 296
 297
 298                 if (astat & (BT878_ASCERR | BT878_AOCERR)) {
 299                         if (bt878_verbose) {
 300 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 301                                 printk("bt878(%d): irq%s%s risc_pc=%08x\n",
 302 =======
 303                                 printk(KERN_INFO
 304                                        "bt878(%d): irq%s%s risc_pc=%08x\n",
 305 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 306                                        bt->nr,
 307                                        (astat & BT878_ASCERR) ? " SCERR" :
 308                                        "",
 309                                        (astat & BT878_AOCERR) ? " OCERR" :
 310                                        "", btread(BT878_ARISC_PC));
 311                         }
 312                 }
 313                 if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
 314                         if (bt878_verbose) {
 315 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 316                                 printk
 317                                     ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
 318 =======
 319                                 printk(KERN_INFO
 320                                      "bt878(%d): irq%s%s%s risc_pc=%08x\n",
 321 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 322                                      bt->nr,
 323                                      (astat & BT878_APABORT) ? " PABORT" :
 324                                      "",
 325                                      (astat & BT878_ARIPERR) ? " RIPERR" :
 326                                      "",
 327                                      (astat & BT878_APPERR) ? " PPERR" :
 328                                      "", btread(BT878_ARISC_PC));
 329                         }
 330                 }
 331                 if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
 332                         if (bt878_verbose) {
 333 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 334                                 printk
 335                                     ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
 336 =======
 337                                 printk(KERN_INFO
 338                                      "bt878(%d): irq%s%s%s risc_pc=%08x\n",
 339 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 340                                      bt->nr,
 341                                      (astat & BT878_AFDSR) ? " FDSR" : "",
 342                                      (astat & BT878_AFTRGT) ? " FTRGT" :
 343                                      "",
 344                                      (astat & BT878_AFBUS) ? " FBUS" : "",
 345                                      btread(BT878_ARISC_PC));
 346                         }
 347                 }
 348                 if (astat & BT878_ARISCI) {
 349                         bt->finished_block = (stat & BT878_ARISCS) >> 28;
 350                         tasklet_schedule(&bt->tasklet);
 351                         break;
 352                 }
 353                 count++;
 354                 if (count > 20) {
 355                         btwrite(0, BT878_AINT_MASK);
 356                         printk(KERN_ERR
 357                                "bt878(%d): IRQ lockup, cleared int mask\n",
 358                                bt->nr);
 359                         break;
 360                 }
 361         }
 362         return IRQ_HANDLED;
 363 }
 364
 365 int
 366 bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
 367 {
 368         int retval;
 369
 370         retval = 0;
 371         if (mutex_lock_interruptible(&bt->gpio_lock))
 372                 return -ERESTARTSYS;
 373         /* special gpio signal */
 374         switch (cmd) {
 375             case DST_IG_ENABLE:
 376                 // dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
 377                 retval = bttv_gpio_enable(bt->bttv_nr,
 378                                 mp->enb.mask,
 379                                 mp->enb.enable);
 380                 break;
 381             case DST_IG_WRITE:
 382                 // dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
 383                 retval = bttv_write_gpio(bt->bttv_nr,
 384                                 mp->outp.mask,
 385                                 mp->outp.highvals);
 386
 387                 break;
 388             case DST_IG_READ:
 389                 /* read */
 390                 retval =  bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
 391                 // dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
 392                 break;
 393             case DST_IG_TS:
 394                 /* Set packet size */
 395                 bt->TS_Size = mp->psize;
 396                 break;
 397
 398             default:
 399                 retval = -EINVAL;
 400                 break;
 401         }
 402         mutex_unlock(&bt->gpio_lock);
 403         return retval;
 404 }
 405
 406 EXPORT_SYMBOL(bt878_device_control);
 407
 408 #define BROOKTREE_878_DEVICE(vend, dev, name) \
 409         { \
 410                 .vendor = PCI_VENDOR_ID_BROOKTREE, \
 411                 .device = PCI_DEVICE_ID_BROOKTREE_878, \
 412                 .subvendor = (vend), .subdevice = (dev), \
 413                 .driver_data = (unsigned long) name \
 414         }
 415
 416 static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
 417         BROOKTREE_878_DEVICE(0x0071, 0x0101, "Nebula Electronics DigiTV"),
 418         BROOKTREE_878_DEVICE(0x1461, 0x0761, "AverMedia AverTV DVB-T 761"),
 419         BROOKTREE_878_DEVICE(0x11bd, 0x001c, "Pinnacle PCTV Sat"),
 420         BROOKTREE_878_DEVICE(0x11bd, 0x0026, "Pinnacle PCTV SAT CI"),
 421         BROOKTREE_878_DEVICE(0x1822, 0x0001, "Twinhan VisionPlus DVB"),
 422         BROOKTREE_878_DEVICE(0x270f, 0xfc00,
 423                                 "ChainTech digitop DST-1000 DVB-S"),
 424         BROOKTREE_878_DEVICE(0x1461, 0x0771, "AVermedia AverTV DVB-T 771"),
 425         BROOKTREE_878_DEVICE(0x18ac, 0xdb10, "DViCO FusionHDTV DVB-T Lite"),
 426         BROOKTREE_878_DEVICE(0x18ac, 0xdb11, "Ultraview DVB-T Lite"),
 427         BROOKTREE_878_DEVICE(0x18ac, 0xd500, "DViCO FusionHDTV 5 Lite"),
 428         BROOKTREE_878_DEVICE(0x7063, 0x2000, "pcHDTV HD-2000 TV"),
 429         BROOKTREE_878_DEVICE(0x1822, 0x0026, "DNTV Live! Mini"),
 430         { }
 431 };
 432
 433 MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
 434
 435 static const char * __devinit card_name(const struct pci_device_id *id)
 436 {
 437         return id->driver_data ? (const char *)id->driver_data : "Unknown";
 438 }
 439
 440 /***********************/
 441 /* PCI device handling */
 442 /***********************/
 443
 444 static int __devinit bt878_probe(struct pci_dev *dev,
 445                                  const struct pci_device_id *pci_id)
 446 {
 447         int result = 0;
 448         unsigned char lat;
 449         struct bt878 *bt;
 450 #if defined(__powerpc__)
 451         unsigned int cmd;
 452 #endif
 453         unsigned int cardid;
 454
 455         printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
 456                bt878_num);
 457         if (bt878_num >= BT878_MAX) {
 458                 printk(KERN_ERR "bt878: Too many devices inserted\n");
 459                 result = -ENOMEM;
 460                 goto fail0;
 461         }
 462         if (pci_enable_device(dev))
 463                 return -EIO;
 464
 465         cardid = dev->subsystem_device << 16;
 466         cardid |= dev->subsystem_vendor;
 467
 468         printk(KERN_INFO "%s: card id=[0x%x],[ %s ] has DVB functions.\n",
 469                                 __func__, cardid, card_name(pci_id));
 470
 471         bt = &bt878[bt878_num];
 472         bt->dev = dev;
 473         bt->nr = bt878_num;
 474         bt->shutdown = 0;
 475
 476         bt->id = dev->device;
 477         bt->irq = dev->irq;
 478         bt->bt878_adr = pci_resource_start(dev, 0);
 479         if (!request_mem_region(pci_resource_start(dev, 0),
 480                                 pci_resource_len(dev, 0), "bt878")) {
 481                 result = -EBUSY;
 482                 goto fail0;
 483         }
 484
 485         pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
 486         pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
 487
 488
 489         printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
 490                bt878_num, bt->id, bt->revision, dev->bus->number,
 491                PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 492         printk("irq: %d, latency: %d, memory: 0x%lx\n",
 493                bt->irq, lat, bt->bt878_adr);
 494
 495
 496 #if defined(__powerpc__)
 497         /* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
 498         /* response on cards with no firmware is not enabled by OF */
 499         pci_read_config_dword(dev, PCI_COMMAND, &cmd);
 500         cmd = (cmd | PCI_COMMAND_MEMORY);
 501         pci_write_config_dword(dev, PCI_COMMAND, cmd);
 502 #endif
 503
 504 #ifdef __sparc__
 505         bt->bt878_mem = (unsigned char *) bt->bt878_adr;
 506 #else
 507         bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
 508 #endif
 509
 510         /* clear interrupt mask */
 511         btwrite(0, BT848_INT_MASK);
 512
 513         result = request_irq(bt->irq, bt878_irq,
 514                              IRQF_SHARED | IRQF_DISABLED, "bt878",
 515                              (void *) bt);
 516         if (result == -EINVAL) {
 517                 printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
 518                        bt878_num);
 519                 goto fail1;
 520         }
 521         if (result == -EBUSY) {
 522                 printk(KERN_ERR
 523                        "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
 524                        bt878_num, bt->irq);
 525                 goto fail1;
 526         }
 527         if (result < 0)
 528                 goto fail1;
 529
 530         pci_set_master(dev);
 531         pci_set_drvdata(dev, bt);
 532
 533 /*        if(init_bt878(btv) < 0) {
 534                 bt878_remove(dev);
 535                 return -EIO;
 536         }
 537 */
 538
 539         if ((result = bt878_mem_alloc(bt))) {
 540 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 541                 printk("bt878: failed to allocate memory!\n");
 542 =======
 543                 printk(KERN_ERR "bt878: failed to allocate memory!\n");
 544 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 545                 goto fail2;
 546         }
 547
 548         bt878_make_risc(bt);
 549         btwrite(0, BT878_AINT_MASK);
 550         bt878_num++;
 551
 552         return 0;
 553
 554       fail2:
 555         free_irq(bt->irq, bt);
 556       fail1:
 557         release_mem_region(pci_resource_start(bt->dev, 0),
 558                            pci_resource_len(bt->dev, 0));
 559       fail0:
 560         pci_disable_device(dev);
 561         return result;
 562 }
 563
 564 static void __devexit bt878_remove(struct pci_dev *pci_dev)
 565 {
 566         u8 command;
 567         struct bt878 *bt = pci_get_drvdata(pci_dev);
 568
 569         if (bt878_verbose)
 570 <<<<<<< HEAD:drivers/media/dvb/bt8xx/bt878.c
 571                 printk("bt878(%d): unloading\n", bt->nr);
 572 =======
 573                 printk(KERN_INFO "bt878(%d): unloading\n", bt->nr);
 574 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/media/dvb/bt8xx/bt878.c
 575
 576         /* turn off all capturing, DMA and IRQs */
 577         btand(~0x13, BT878_AGPIO_DMA_CTL);
 578
 579         /* first disable interrupts before unmapping the memory! */
 580         btwrite(0, BT878_AINT_MASK);
 581         btwrite(~0U, BT878_AINT_STAT);
 582
 583         /* disable PCI bus-mastering */
 584         pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
 585         /* Should this be &=~ ?? */
 586         command &= ~PCI_COMMAND_MASTER;
 587         pci_write_config_byte(bt->dev, PCI_COMMAND, command);
 588
 589         free_irq(bt->irq, bt);
 590         printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
 591         if (bt->bt878_mem)
 592                 iounmap(bt->bt878_mem);
 593
 594         release_mem_region(pci_resource_start(bt->dev, 0),
 595                            pci_resource_len(bt->dev, 0));
 596         /* wake up any waiting processes
 597            because shutdown flag is set, no new processes (in this queue)
 598            are expected
 599          */
 600         bt->shutdown = 1;
 601         bt878_mem_free(bt);
 602
 603         pci_set_drvdata(pci_dev, NULL);
 604         pci_disable_device(pci_dev);
 605         return;
 606 }
 607
 608 static struct pci_driver bt878_pci_driver = {
 609       .name     = "bt878",
 610       .id_table = bt878_pci_tbl,
 611       .probe    = bt878_probe,
 612       .remove   = bt878_remove,
 613 };
 614
 615 static int bt878_pci_driver_registered;
 616
 617 /*******************************/
 618 /* Module management functions */
 619 /*******************************/
 620
 621 static int bt878_init_module(void)
 622 {
 623         bt878_num = 0;
 624         bt878_pci_driver_registered = 0;
 625
 626         printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
 627                (BT878_VERSION_CODE >> 16) & 0xff,
 628                (BT878_VERSION_CODE >> 8) & 0xff,
 629                BT878_VERSION_CODE & 0xff);
 630 /*
 631         bt878_check_chipset();
 632 */
 633         /* later we register inside of bt878_find_audio_dma()
 634          * because we may want to ignore certain cards */
 635         bt878_pci_driver_registered = 1;
 636         return pci_register_driver(&bt878_pci_driver);
 637 }
 638
 639 static void bt878_cleanup_module(void)
 640 {
 641         if (bt878_pci_driver_registered) {
 642                 bt878_pci_driver_registered = 0;
 643                 pci_unregister_driver(&bt878_pci_driver);
 644         }
 645         return;
 646 }
 647
 648 module_init(bt878_init_module);
 649 module_exit(bt878_cleanup_module);
 650
 651 //MODULE_AUTHOR("XXX");
 652 MODULE_LICENSE("GPL");
 653
 654 /*
 655  * Local variables:
 656  * c-basic-offset: 8
 657  * End:
 658  */