drivers/pcmcia/m32r_pcc.c

   1 /*
   2  *  drivers/pcmcia/m32r_pcc.c
   3  *
   4  *  Device driver for the PCMCIA functionality of M32R.
   5  *
   6  *  Copyright (c) 2001, 2002, 2003, 2004
   7  *    Hiroyuki Kondo, Naoto Sugai, Hayato Fujiwara
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/init.h>
  13 #include <linux/types.h>
  14 #include <linux/fcntl.h>
  15 #include <linux/string.h>
  16 #include <linux/kernel.h>
  17 #include <linux/errno.h>
  18 #include <linux/timer.h>
  19 #include <linux/slab.h>
  20 #include <linux/ioport.h>
  21 #include <linux/delay.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/bitops.h>
  26 #include <asm/irq.h>
  27 #include <asm/io.h>
  28 #include <asm/system.h>
  29 #include <asm/addrspace.h>
  30
  31 #include <pcmcia/cs_types.h>
  32 #include <pcmcia/ss.h>
  33 #include <pcmcia/cs.h>
  34
  35 /* XXX: should be moved into asm/irq.h */
  36 #define PCC0_IRQ 24
  37 #define PCC1_IRQ 25
  38
  39 #include "m32r_pcc.h"
  40
  41 #define CHAOS_PCC_DEBUG
  42 #ifdef CHAOS_PCC_DEBUG
  43         static volatile u_short dummy_readbuf;
  44 #endif
  45
  46 #define PCC_DEBUG_DBEX
  47
  48 #ifdef DEBUG
  49 static int m32r_pcc_debug;
  50 module_param(m32r_pcc_debug, int, 0644);
  51 #define debug(lvl, fmt, arg...) do {                            \
  52         if (m32r_pcc_debug > (lvl))                             \
  53                 printk(KERN_DEBUG "m32r_pcc: " fmt , ## arg);   \
  54 } while (0)
  55 #else
  56 #define debug(n, args...) do { } while (0)
  57 #endif
  58
  59 /* Poll status interval -- 0 means default to interrupt */
  60 static int poll_interval = 0;
  61
  62 typedef enum pcc_space { as_none = 0, as_comm, as_attr, as_io } pcc_as_t;
  63
  64 typedef struct pcc_socket {
  65         u_short                 type, flags;
  66         struct pcmcia_socket    socket;
  67         unsigned int            number;
  68         unsigned int            ioaddr;
  69         u_long                  mapaddr;
  70         u_long                  base;   /* PCC register base */
  71         u_char                  cs_irq, intr;
  72         pccard_io_map           io_map[MAX_IO_WIN];
  73         pccard_mem_map          mem_map[MAX_WIN];
  74         u_char                  io_win;
  75         u_char                  mem_win;
  76         pcc_as_t                current_space;
  77         u_char                  last_iodbex;
  78 #ifdef CHAOS_PCC_DEBUG
  79         u_char                  last_iosize;
  80 #endif
  81 #ifdef CONFIG_PROC_FS
  82         struct proc_dir_entry *proc;
  83 #endif
  84 } pcc_socket_t;
  85
  86 static int pcc_sockets = 0;
  87 static pcc_socket_t socket[M32R_MAX_PCC] = {
  88         { 0, }, /* ... */
  89 };
  90
  91 /*====================================================================*/
  92
  93 static unsigned int pcc_get(u_short, unsigned int);
  94 static void pcc_set(u_short, unsigned int , unsigned int );
  95
  96 static DEFINE_SPINLOCK(pcc_lock);
  97
  98 void pcc_iorw(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int wr, int flag)
  99 {
 100         u_long addr;
 101         u_long flags;
 102         int need_ex;
 103 #ifdef PCC_DEBUG_DBEX
 104         int _dbex;
 105 #endif
 106         pcc_socket_t *t = &socket[sock];
 107 #ifdef CHAOS_PCC_DEBUG
 108         int map_changed = 0;
 109 #endif
 110
 111         /* Need lock ? */
 112         spin_lock_irqsave(&pcc_lock, flags);
 113
 114         /*
 115          * Check if need dbex
 116          */
 117         need_ex = (size > 1 && flag == 0) ? PCMOD_DBEX : 0;
 118 #ifdef PCC_DEBUG_DBEX
 119         _dbex = need_ex;
 120         need_ex = 0;
 121 #endif
 122
 123         /*
 124          * calculate access address
 125          */
 126         addr = t->mapaddr + port - t->ioaddr + KSEG1; /* XXX */
 127
 128         /*
 129          * Check current mapping
 130          */
 131         if (t->current_space != as_io || t->last_iodbex != need_ex) {
 132
 133                 u_long cbsz;
 134
 135                 /*
 136                  * Disable first
 137                  */
 138                 pcc_set(sock, PCCR, 0);
 139
 140                 /*
 141                  * Set mode and io address
 142                  */
 143                 cbsz = (t->flags & MAP_16BIT) ? 0 : PCMOD_CBSZ;
 144                 pcc_set(sock, PCMOD, PCMOD_AS_IO | cbsz | need_ex);
 145                 pcc_set(sock, PCADR, addr & 0x1ff00000);
 146
 147                 /*
 148                  * Enable and read it
 149                  */
 150                 pcc_set(sock, PCCR, 1);
 151
 152 #ifdef CHAOS_PCC_DEBUG
 153 #if 0
 154                 map_changed = (t->current_space == as_attr && size == 2); /* XXX */
 155 #else
 156                 map_changed = 1;
 157 #endif
 158 #endif
 159                 t->current_space = as_io;
 160         }
 161
 162         /*
 163          * access to IO space
 164          */
 165         if (size == 1) {
 166                 /* Byte */
 167                 unsigned char *bp = (unsigned char *)buf;
 168
 169 #ifdef CHAOS_DEBUG
 170                 if (map_changed) {
 171                         dummy_readbuf = readb(addr);
 172                 }
 173 #endif
 174                 if (wr) {
 175                         /* write Byte */
 176                         while (nmemb--) {
 177                                 writeb(*bp++, addr);
 178                         }
 179                 } else {
 180                         /* read Byte */
 181                         while (nmemb--) {
 182                         *bp++ = readb(addr);
 183                         }
 184                 }
 185         } else {
 186                 /* Word */
 187                 unsigned short *bp = (unsigned short *)buf;
 188
 189 #ifdef CHAOS_PCC_DEBUG
 190                 if (map_changed) {
 191                         dummy_readbuf = readw(addr);
 192                 }
 193 #endif
 194                 if (wr) {
 195                         /* write Word */
 196                         while (nmemb--) {
 197 #ifdef PCC_DEBUG_DBEX
 198                                 if (_dbex) {
 199                                         unsigned char *cp = (unsigned char *)bp;
 200                                         unsigned short tmp;
 201                                         tmp = cp[1] << 8 | cp[0];
 202                                         writew(tmp, addr);
 203                                         bp++;
 204                                 } else
 205 #endif
 206                                 writew(*bp++, addr);
 207                 }
 208             } else {
 209                 /* read Word */
 210                 while (nmemb--) {
 211 #ifdef  PCC_DEBUG_DBEX
 212                                 if (_dbex) {
 213                                         unsigned char *cp = (unsigned char *)bp;
 214                                         unsigned short tmp;
 215                                         tmp = readw(addr);
 216                                         cp[0] = tmp & 0xff;
 217                                         cp[1] = (tmp >> 8) & 0xff;
 218                                         bp++;
 219                                 } else
 220 #endif
 221                                 *bp++ = readw(addr);
 222                 }
 223             }
 224         }
 225
 226 #if 1
 227         /* addr is no longer used */
 228         if ((addr = pcc_get(sock, PCIRC)) & PCIRC_BWERR) {
 229           printk("m32r_pcc: BWERR detected : port 0x%04lx : iosize %dbit\n",
 230                          port, size * 8);
 231           pcc_set(sock, PCIRC, addr);
 232         }
 233 #endif
 234         /*
 235          * save state
 236          */
 237         t->last_iosize = size;
 238         t->last_iodbex = need_ex;
 239
 240         /* Need lock ? */
 241
 242         spin_unlock_irqrestore(&pcc_lock,flags);
 243
 244         return;
 245 }
 246
 247 void pcc_ioread(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int flag) {
 248         pcc_iorw(sock, port, buf, size, nmemb, 0, flag);
 249 }
 250
 251 void pcc_iowrite(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int flag) {
 252     pcc_iorw(sock, port, buf, size, nmemb, 1, flag);
 253 }
 254
 255 /*====================================================================*/
 256
 257 #define IS_REGISTERED           0x2000
 258 #define IS_ALIVE                0x8000
 259
 260 typedef struct pcc_t {
 261         char                    *name;
 262         u_short                 flags;
 263 } pcc_t;
 264
 265 static pcc_t pcc[] = {
 266         { "xnux2", 0 }, { "xnux2", 0 },
 267 };
 268
 269 static irqreturn_t pcc_interrupt(int, void *);
 270
 271 /*====================================================================*/
 272
 273 static struct timer_list poll_timer;
 274
 275 static unsigned int pcc_get(u_short sock, unsigned int reg)
 276 {
 277         return inl(socket[sock].base + reg);
 278 }
 279
 280
 281 static void pcc_set(u_short sock, unsigned int reg, unsigned int data)
 282 {
 283         outl(data, socket[sock].base + reg);
 284 }
 285
 286 /*======================================================================
 287
 288         See if a card is present, powered up, in IO mode, and already
 289         bound to a (non PC Card) Linux driver.  We leave these alone.
 290
 291         We make an exception for cards that seem to be serial devices.
 292
 293 ======================================================================*/
 294
 295 static int __init is_alive(u_short sock)
 296 {
 297         unsigned int stat;
 298         unsigned int f;
 299
 300         stat = pcc_get(sock, PCIRC);
 301         f = (stat & (PCIRC_CDIN1 | PCIRC_CDIN2)) >> 16;
 302         if(!f){
 303                 printk("m32r_pcc: No Card is detected at socket %d : stat = 0x%08x\n",stat,sock);
 304                 return 0;
 305         }
 306         if(f!=3)
 307                 printk("m32r_pcc: Insertion fail (%.8x) at socket %d\n",stat,sock);
 308         else
 309                 printk("m32r_pcc: Card is Inserted at socket %d(%.8x)\n",sock,stat);
 310         return 0;
 311 }
 312
 313 static void add_pcc_socket(ulong base, int irq, ulong mapaddr,
 314                            unsigned int ioaddr)
 315 {
 316         pcc_socket_t *t = &socket[pcc_sockets];
 317
 318         /* add sockets */
 319         t->ioaddr = ioaddr;
 320         t->mapaddr = mapaddr;
 321         t->base = base;
 322 #ifdef CHAOS_PCC_DEBUG
 323         t->flags = MAP_16BIT;
 324 #else
 325         t->flags = 0;
 326 #endif
 327         if (is_alive(pcc_sockets))
 328                 t->flags |= IS_ALIVE;
 329
 330         /* add pcc */
 331         if (t->base > 0) {
 332                 request_region(t->base, 0x20, "m32r-pcc");
 333         }
 334
 335         printk(KERN_INFO "  %s ", pcc[pcc_sockets].name);
 336         printk("pcc at 0x%08lx\n", t->base);
 337
 338         /* Update socket interrupt information, capabilities */
 339         t->socket.features |= (SS_CAP_PCCARD | SS_CAP_STATIC_MAP);
 340         t->socket.map_size = M32R_PCC_MAPSIZE;
 341         t->socket.io_offset = ioaddr;   /* use for io access offset */
 342         t->socket.irq_mask = 0;
 343         t->socket.pci_irq = 2 + pcc_sockets; /* XXX */
 344
 345         request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt);
 346
 347         pcc_sockets++;
 348
 349         return;
 350 }
 351
 352
 353 /*====================================================================*/
 354
 355 static irqreturn_t pcc_interrupt(int irq, void *dev)
 356 {
 357         int i, j, irc;
 358         u_int events, active;
 359         int handled = 0;
 360
 361         debug(4, "m32r: pcc_interrupt(%d)\n", irq);
 362
 363         for (j = 0; j < 20; j++) {
 364                 active = 0;
 365                 for (i = 0; i < pcc_sockets; i++) {
 366                         if ((socket[i].cs_irq != irq) &&
 367                                 (socket[i].socket.pci_irq != irq))
 368                                 continue;
 369                         handled = 1;
 370                         irc = pcc_get(i, PCIRC);
 371                         irc >>=16;
 372                         debug(2, "m32r-pcc:interrupt: socket %d pcirc 0x%02x ", i, irc);
 373                         if (!irc)
 374                                 continue;
 375
 376                         events = (irc) ? SS_DETECT : 0;
 377                         events |= (pcc_get(i,PCCR) & PCCR_PCEN) ? SS_READY : 0;
 378                         debug(2, " event 0x%02x\n", events);
 379
 380                         if (events)
 381                                 pcmcia_parse_events(&socket[i].socket, events);
 382
 383                         active |= events;
 384                         active = 0;
 385                 }
 386                 if (!active) break;
 387         }
 388         if (j == 20)
 389                 printk(KERN_NOTICE "m32r-pcc: infinite loop in interrupt handler\n");
 390
 391         debug(4, "m32r-pcc: interrupt done\n");
 392
 393         return IRQ_RETVAL(handled);
 394 } /* pcc_interrupt */
 395
 396 static void pcc_interrupt_wrapper(u_long data)
 397 {
 398         pcc_interrupt(0, NULL);
 399         init_timer(&poll_timer);
 400         poll_timer.expires = jiffies + poll_interval;
 401         add_timer(&poll_timer);
 402 }
 403
 404 /*====================================================================*/
 405
 406 static int _pcc_get_status(u_short sock, u_int *value)
 407 {
 408         u_int status;
 409
 410         status = pcc_get(sock,PCIRC);
 411         *value = ((status & PCIRC_CDIN1) && (status & PCIRC_CDIN2))
 412                 ? SS_DETECT : 0;
 413
 414         status = pcc_get(sock,PCCR);
 415
 416 #if 0
 417         *value |= (status & PCCR_PCEN) ? SS_READY : 0;
 418 #else
 419         *value |= SS_READY; /* XXX: always */
 420 #endif
 421
 422         status = pcc_get(sock,PCCSIGCR);
 423         *value |= (status & PCCSIGCR_VEN) ? SS_POWERON : 0;
 424
 425         debug(3, "m32r-pcc: GetStatus(%d) = %#4.4x\n", sock, *value);
 426         return 0;
 427 } /* _get_status */
 428
 429 /*====================================================================*/
 430
 431 static int _pcc_set_socket(u_short sock, socket_state_t *state)
 432 {
 433         u_long reg = 0;
 434
 435         debug(3, "m32r-pcc: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
 436                   "io_irq %d, csc_mask %#2.2x)", sock, state->flags,
 437                   state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
 438
 439         if (state->Vcc) {
 440                 /*
 441                  * 5V only
 442                  */
 443                 if (state->Vcc == 50) {
 444                         reg |= PCCSIGCR_VEN;
 445                 } else {
 446                         return -EINVAL;
 447                 }
 448         }
 449
 450         if (state->flags & SS_RESET) {
 451                 debug(3, ":RESET\n");
 452                 reg |= PCCSIGCR_CRST;
 453         }
 454         if (state->flags & SS_OUTPUT_ENA){
 455                 debug(3, ":OUTPUT_ENA\n");
 456                 /* bit clear */
 457         } else {
 458                 reg |= PCCSIGCR_SEN;
 459         }
 460
 461         pcc_set(sock,PCCSIGCR,reg);
 462
 463 #ifdef DEBUG
 464         if(state->flags & SS_IOCARD){
 465                 debug(3, ":IOCARD");
 466         }
 467         if (state->flags & SS_PWR_AUTO) {
 468                 debug(3, ":PWR_AUTO");
 469         }
 470         if (state->csc_mask & SS_DETECT)
 471                 debug(3, ":csc-SS_DETECT");
 472         if (state->flags & SS_IOCARD) {
 473                 if (state->csc_mask & SS_STSCHG)
 474                         debug(3, ":STSCHG");
 475         } else {
 476                 if (state->csc_mask & SS_BATDEAD)
 477                         debug(3, ":BATDEAD");
 478                 if (state->csc_mask & SS_BATWARN)
 479                         debug(3, ":BATWARN");
 480                 if (state->csc_mask & SS_READY)
 481                         debug(3, ":READY");
 482         }
 483         debug(3, "\n");
 484 #endif
 485         return 0;
 486 } /* _set_socket */
 487
 488 /*====================================================================*/
 489
 490 static int _pcc_set_io_map(u_short sock, struct pccard_io_map *io)
 491 {
 492         u_char map;
 493
 494         debug(3, "m32r-pcc: SetIOMap(%d, %d, %#2.2x, %d ns, "
 495                   "%#x-%#x)\n", sock, io->map, io->flags,
 496                   io->speed, io->start, io->stop);
 497         map = io->map;
 498
 499         return 0;
 500 } /* _set_io_map */
 501
 502 /*====================================================================*/
 503
 504 static int _pcc_set_mem_map(u_short sock, struct pccard_mem_map *mem)
 505 {
 506
 507         u_char map = mem->map;
 508         u_long mode;
 509         u_long addr;
 510         pcc_socket_t *t = &socket[sock];
 511 #ifdef CHAOS_PCC_DEBUG
 512 #if 0
 513         pcc_as_t last = t->current_space;
 514 #endif
 515 #endif
 516
 517         debug(3, "m32r-pcc: SetMemMap(%d, %d, %#2.2x, %d ns, "
 518                  "%#lx,  %#x)\n", sock, map, mem->flags,
 519                  mem->speed, mem->static_start, mem->card_start);
 520
 521         /*
 522          * sanity check
 523          */
 524         if ((map > MAX_WIN) || (mem->card_start > 0x3ffffff)){
 525                 return -EINVAL;
 526         }
 527
 528         /*
 529          * de-activate
 530          */
 531         if ((mem->flags & MAP_ACTIVE) == 0) {
 532                 t->current_space = as_none;
 533                 return 0;
 534         }
 535
 536         /*
 537          * Disable first
 538          */
 539         pcc_set(sock, PCCR, 0);
 540
 541         /*
 542          * Set mode
 543          */
 544         if (mem->flags & MAP_ATTRIB) {
 545                 mode = PCMOD_AS_ATTRIB | PCMOD_CBSZ;
 546                 t->current_space = as_attr;
 547         } else {
 548                 mode = 0; /* common memory */
 549                 t->current_space = as_comm;
 550         }
 551         pcc_set(sock, PCMOD, mode);
 552
 553         /*
 554          * Set address
 555          */
 556         addr = t->mapaddr + (mem->card_start & M32R_PCC_MAPMASK);
 557         pcc_set(sock, PCADR, addr);
 558
 559         mem->static_start = addr + mem->card_start;
 560
 561         /*
 562          * Enable again
 563          */
 564         pcc_set(sock, PCCR, 1);
 565
 566 #ifdef CHAOS_PCC_DEBUG
 567 #if 0
 568         if (last != as_attr) {
 569 #else
 570         if (1) {
 571 #endif
 572                 dummy_readbuf = *(u_char *)(addr + KSEG1);
 573         }
 574 #endif
 575
 576         return 0;
 577
 578 } /* _set_mem_map */
 579
 580 #if 0 /* driver model ordering issue */
 581 /*======================================================================
 582
 583         Routines for accessing socket information and register dumps via
 584         /proc/bus/pccard/...
 585
 586 ======================================================================*/
 587
 588 static ssize_t show_info(struct class_device *class_dev, char *buf)
 589 {
 590         pcc_socket_t *s = container_of(class_dev, struct pcc_socket,
 591                 socket.dev);
 592
 593         return sprintf(buf, "type:     %s\nbase addr:    0x%08lx\n",
 594                 pcc[s->type].name, s->base);
 595 }
 596
 597 static ssize_t show_exca(struct class_device *class_dev, char *buf)
 598 {
 599         /* FIXME */
 600
 601         return 0;
 602 }
 603
 604 static CLASS_DEVICE_ATTR(info, S_IRUGO, show_info, NULL);
 605 static CLASS_DEVICE_ATTR(exca, S_IRUGO, show_exca, NULL);
 606 #endif
 607
 608 /*====================================================================*/
 609
 610 /* this is horribly ugly... proper locking needs to be done here at
 611  * some time... */
 612 #define LOCKED(x) do {                                  \
 613         int retval;                                     \
 614         unsigned long flags;                            \
 615         spin_lock_irqsave(&pcc_lock, flags);            \
 616         retval = x;                                     \
 617         spin_unlock_irqrestore(&pcc_lock, flags);       \
 618         return retval;                                  \
 619 } while (0)
 620
 621
 622 static int pcc_get_status(struct pcmcia_socket *s, u_int *value)
 623 {
 624         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 625
 626         if (socket[sock].flags & IS_ALIVE) {
 627                 *value = 0;
 628                 return -EINVAL;
 629         }
 630         LOCKED(_pcc_get_status(sock, value));
 631 }
 632
 633 static int pcc_set_socket(struct pcmcia_socket *s, socket_state_t *state)
 634 {
 635         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 636
 637         if (socket[sock].flags & IS_ALIVE)
 638                 return -EINVAL;
 639
 640         LOCKED(_pcc_set_socket(sock, state));
 641 }
 642
 643 static int pcc_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 644 {
 645         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 646
 647         if (socket[sock].flags & IS_ALIVE)
 648                 return -EINVAL;
 649         LOCKED(_pcc_set_io_map(sock, io));
 650 }
 651
 652 static int pcc_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
 653 {
 654         unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
 655
 656         if (socket[sock].flags & IS_ALIVE)
 657                 return -EINVAL;
 658         LOCKED(_pcc_set_mem_map(sock, mem));
 659 }
 660
 661 static int pcc_init(struct pcmcia_socket *s)
 662 {
 663         debug(4, "m32r-pcc: init call\n");
 664         return 0;
 665 }
 666
 667 static struct pccard_operations pcc_operations = {
 668         .init                   = pcc_init,
 669         .get_status             = pcc_get_status,
 670         .set_socket             = pcc_set_socket,
 671         .set_io_map             = pcc_set_io_map,
 672         .set_mem_map            = pcc_set_mem_map,
 673 };
 674
 675 /*====================================================================*/
 676
 677 static struct device_driver pcc_driver = {
 678         .name = "pcc",
 679         .bus = &platform_bus_type,
 680         .suspend = pcmcia_socket_dev_suspend,
 681         .resume = pcmcia_socket_dev_resume,
 682 };
 683
 684 static struct platform_device pcc_device = {
 685         .name = "pcc",
 686         .id = 0,
 687 };
 688
 689 /*====================================================================*/
 690
 691 static int __init init_m32r_pcc(void)
 692 {
 693         int i, ret;
 694
 695         ret = driver_register(&pcc_driver);
 696         if (ret)
 697                 return ret;
 698
 699         ret = platform_device_register(&pcc_device);
 700         if (ret){
 701                 driver_unregister(&pcc_driver);
 702                 return ret;
 703         }
 704
 705         printk(KERN_INFO "m32r PCC probe:\n");
 706
 707         pcc_sockets = 0;
 708
 709         add_pcc_socket(M32R_PCC0_BASE, PCC0_IRQ, M32R_PCC0_MAPBASE, 0x1000);
 710
 711 #ifdef CONFIG_M32RPCC_SLOT2
 712         add_pcc_socket(M32R_PCC1_BASE, PCC1_IRQ, M32R_PCC1_MAPBASE, 0x2000);
 713 #endif
 714
 715         if (pcc_sockets == 0) {
 716                 printk("socket is not found.\n");
 717                 platform_device_unregister(&pcc_device);
 718                 driver_unregister(&pcc_driver);
 719                 return -ENODEV;
 720         }
 721
 722         /* Set up interrupt handler(s) */
 723
 724         for (i = 0 ; i < pcc_sockets ; i++) {
 725                 socket[i].socket.dev.parent = &pcc_device.dev;
 726                 socket[i].socket.ops = &pcc_operations;
 727                 socket[i].socket.resource_ops = &pccard_static_ops;
 728                 socket[i].socket.owner = THIS_MODULE;
 729                 socket[i].number = i;
 730                 ret = pcmcia_register_socket(&socket[i].socket);
 731                 if (!ret)
 732                         socket[i].flags |= IS_REGISTERED;
 733
 734 #if 0   /* driver model ordering issue */
 735                 class_device_create_file(&socket[i].socket.dev,
 736                                          &class_device_attr_info);
 737                 class_device_create_file(&socket[i].socket.dev,
 738                                          &class_device_attr_exca);
 739 #endif
 740         }
 741
 742         /* Finally, schedule a polling interrupt */
 743         if (poll_interval != 0) {
 744                 poll_timer.function = pcc_interrupt_wrapper;
 745                 poll_timer.data = 0;
 746                 init_timer(&poll_timer);
 747                 poll_timer.expires = jiffies + poll_interval;
 748                 add_timer(&poll_timer);
 749         }
 750
 751         return 0;
 752 } /* init_m32r_pcc */
 753
 754 static void __exit exit_m32r_pcc(void)
 755 {
 756         int i;
 757
 758         for (i = 0; i < pcc_sockets; i++)
 759                 if (socket[i].flags & IS_REGISTERED)
 760                         pcmcia_unregister_socket(&socket[i].socket);
 761
 762         platform_device_unregister(&pcc_device);
 763         if (poll_interval != 0)
 764                 del_timer_sync(&poll_timer);
 765
 766         driver_unregister(&pcc_driver);
 767 } /* exit_m32r_pcc */
 768
 769 module_init(init_m32r_pcc);
 770 module_exit(exit_m32r_pcc);
 771 MODULE_LICENSE("Dual MPL/GPL");
 772 /*====================================================================*/