drivers/pcmcia/pd6729.c

   1 /*
   2  * Driver for the Cirrus PD6729 PCI-PCMCIA bridge.
   3  *
   4  * Based on the i82092.c driver.
   5  *
   6  * This software may be used and distributed according to the terms of
   7  * the GNU General Public License, incorporated herein by reference.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/pci.h>
  13 #include <linux/init.h>
  14 #include <linux/workqueue.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/device.h>
  17
  18 #include <pcmcia/cs_types.h>
  19 #include <pcmcia/ss.h>
  20 #include <pcmcia/cs.h>
  21
  22 #include <asm/system.h>
  23 #include <asm/io.h>
  24
  25 #include "pd6729.h"
  26 #include "i82365.h"
  27 #include "cirrus.h"
  28
  29 MODULE_LICENSE("GPL");
  30 MODULE_DESCRIPTION("Driver for the Cirrus PD6729 PCI-PCMCIA bridge");
  31 MODULE_AUTHOR("Jun Komuro <komurojun-mbn@nifty.com>");
  32
  33 #define MAX_SOCKETS 2
  34
  35 /*
  36  * simple helper functions
  37  * External clock time, in nanoseconds.  120 ns = 8.33 MHz
  38  */
  39 #define to_cycles(ns)   ((ns)/120)
  40
  41 #ifndef NO_IRQ
  42 #define NO_IRQ  ((unsigned int)(0))
  43 #endif
  44
  45 /*
  46  * PARAMETERS
  47  *  irq_mode=n
  48  *     Specifies the interrupt delivery mode.  The default (1) is to use PCI
  49  *     interrupts; a value of 0 selects ISA interrupts. This must be set for
  50  *     correct operation of PCI card readers.
  51  *
  52  *  irq_list=i,j,...
  53  *     This list limits the set of interrupts that can be used by PCMCIA
  54  *     cards.
  55  *     The default list is 3,4,5,7,9,10,11.
  56  *     (irq_list parameter is not used, if irq_mode = 1)
  57  */
  58
  59 static int irq_mode = 1; /* 0 = ISA interrupt, 1 = PCI interrupt */
  60 static int irq_list[16];
  61 static int irq_list_count = 0;
  62
  63 module_param(irq_mode, int, 0444);
  64 module_param_array(irq_list, int, &irq_list_count, 0444);
  65 MODULE_PARM_DESC(irq_mode,
  66                 "interrupt delivery mode. 0 = ISA, 1 = PCI. default is 1");
  67 MODULE_PARM_DESC(irq_list, "interrupts that can be used by PCMCIA cards");
  68
  69 static DEFINE_SPINLOCK(port_lock);
  70
  71 /* basic value read/write functions */
  72
  73 static unsigned char indirect_read(struct pd6729_socket *socket,
  74                                    unsigned short reg)
  75 {
  76         unsigned long port;
  77         unsigned char val;
  78         unsigned long flags;
  79
  80         spin_lock_irqsave(&port_lock, flags);
  81         reg += socket->number * 0x40;
  82         port = socket->io_base;
  83         outb(reg, port);
  84         val = inb(port + 1);
  85         spin_unlock_irqrestore(&port_lock, flags);
  86
  87         return val;
  88 }
  89
  90 static unsigned short indirect_read16(struct pd6729_socket *socket,
  91                                       unsigned short reg)
  92 {
  93         unsigned long port;
  94         unsigned short tmp;
  95         unsigned long flags;
  96
  97         spin_lock_irqsave(&port_lock, flags);
  98         reg  = reg + socket->number * 0x40;
  99         port = socket->io_base;
 100         outb(reg, port);
 101         tmp = inb(port + 1);
 102         reg++;
 103         outb(reg, port);
 104         tmp = tmp | (inb(port + 1) << 8);
 105         spin_unlock_irqrestore(&port_lock, flags);
 106
 107         return tmp;
 108 }
 109
 110 static void indirect_write(struct pd6729_socket *socket, unsigned short reg,
 111                            unsigned char value)
 112 {
 113         unsigned long port;
 114         unsigned long flags;
 115
 116         spin_lock_irqsave(&port_lock, flags);
 117         reg = reg + socket->number * 0x40;
 118         port = socket->io_base;
 119         outb(reg, port);
 120         outb(value, port + 1);
 121         spin_unlock_irqrestore(&port_lock, flags);
 122 }
 123
 124 static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg,
 125                             unsigned char mask)
 126 {
 127         unsigned long port;
 128         unsigned char val;
 129         unsigned long flags;
 130
 131         spin_lock_irqsave(&port_lock, flags);
 132         reg = reg + socket->number * 0x40;
 133         port = socket->io_base;
 134         outb(reg, port);
 135         val = inb(port + 1);
 136         val |= mask;
 137         outb(reg, port);
 138         outb(val, port + 1);
 139         spin_unlock_irqrestore(&port_lock, flags);
 140 }
 141
 142 static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg,
 143                               unsigned char mask)
 144 {
 145         unsigned long port;
 146         unsigned char val;
 147         unsigned long flags;
 148
 149         spin_lock_irqsave(&port_lock, flags);
 150         reg = reg + socket->number * 0x40;
 151         port = socket->io_base;
 152         outb(reg, port);
 153         val = inb(port + 1);
 154         val &= ~mask;
 155         outb(reg, port);
 156         outb(val, port + 1);
 157         spin_unlock_irqrestore(&port_lock, flags);
 158 }
 159
 160 static void indirect_write16(struct pd6729_socket *socket, unsigned short reg,
 161                              unsigned short value)
 162 {
 163         unsigned long port;
 164         unsigned char val;
 165         unsigned long flags;
 166
 167         spin_lock_irqsave(&port_lock, flags);
 168         reg = reg + socket->number * 0x40;
 169         port = socket->io_base;
 170
 171         outb(reg, port);
 172         val = value & 255;
 173         outb(val, port + 1);
 174
 175         reg++;
 176
 177         outb(reg, port);
 178         val = value >> 8;
 179         outb(val, port + 1);
 180         spin_unlock_irqrestore(&port_lock, flags);
 181 }
 182
 183 /* Interrupt handler functionality */
 184
 185 static irqreturn_t pd6729_interrupt(int irq, void *dev, struct pt_regs *regs)
 186 {
 187         struct pd6729_socket *socket = (struct pd6729_socket *)dev;
 188         int i;
 189         int loopcount = 0;
 190         int handled = 0;
 191         unsigned int events, active = 0;
 192
 193         while (1) {
 194                 loopcount++;
 195                 if (loopcount > 20) {
 196                         printk(KERN_ERR "pd6729: infinite eventloop "
 197                                "in interrupt\n");
 198                         break;
 199                 }
 200
 201                 active = 0;
 202
 203                 for (i = 0; i < MAX_SOCKETS; i++) {
 204                         unsigned int csc;
 205
 206                         /* card status change register */
 207                         csc = indirect_read(&socket[i], I365_CSC);
 208                         if (csc == 0)  /* no events on this socket */
 209                                 continue;
 210
 211                         handled = 1;
 212                         events = 0;
 213
 214                         if (csc & I365_CSC_DETECT) {
 215                                 events |= SS_DETECT;
 216                                 dprintk("Card detected in socket %i!\n", i);
 217                         }
 218
 219                         if (indirect_read(&socket[i], I365_INTCTL)
 220                                                 & I365_PC_IOCARD) {
 221                                 /* For IO/CARDS, bit 0 means "read the card" */
 222                                 events |= (csc & I365_CSC_STSCHG)
 223                                                 ? SS_STSCHG : 0;
 224                         } else {
 225                                 /* Check for battery/ready events */
 226                                 events |= (csc & I365_CSC_BVD1)
 227                                                 ? SS_BATDEAD : 0;
 228                                 events |= (csc & I365_CSC_BVD2)
 229                                                 ? SS_BATWARN : 0;
 230                                 events |= (csc & I365_CSC_READY)
 231                                                 ? SS_READY : 0;
 232                         }
 233
 234                         if (events) {
 235                                 pcmcia_parse_events(&socket[i].socket, events);
 236                         }
 237                         active |= events;
 238                 }
 239
 240                 if (active == 0) /* no more events to handle */
 241                         break;
 242         }
 243         return IRQ_RETVAL(handled);
 244 }
 245
 246 /* socket functions */
 247
 248 static void pd6729_interrupt_wrapper(unsigned long data)
 249 {
 250         struct pd6729_socket *socket = (struct pd6729_socket *) data;
 251
 252         pd6729_interrupt(0, (void *)socket, NULL);
 253         mod_timer(&socket->poll_timer, jiffies + HZ);
 254 }
 255
 256 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
 257 {
 258         struct pd6729_socket *socket
 259                         = container_of(sock, struct pd6729_socket, socket);
 260         unsigned int status;
 261         unsigned int data;
 262         struct pd6729_socket *t;
 263
 264         /* Interface Status Register */
 265         status = indirect_read(socket, I365_STATUS);
 266         *value = 0;
 267
 268         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
 269                 *value |= SS_DETECT;
 270         }
 271
 272         /*
 273          * IO cards have a different meaning of bits 0,1
 274          * Also notice the inverse-logic on the bits
 275          */
 276         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
 277                 /* IO card */
 278                 if (!(status & I365_CS_STSCHG))
 279                         *value |= SS_STSCHG;
 280         } else {
 281                 /* non I/O card */
 282                 if (!(status & I365_CS_BVD1))
 283                         *value |= SS_BATDEAD;
 284                 if (!(status & I365_CS_BVD2))
 285                         *value |= SS_BATWARN;
 286         }
 287
 288         if (status & I365_CS_WRPROT)
 289                 *value |= SS_WRPROT;    /* card is write protected */
 290
 291         if (status & I365_CS_READY)
 292                 *value |= SS_READY;     /* card is not busy */
 293
 294         if (status & I365_CS_POWERON)
 295                 *value |= SS_POWERON;   /* power is applied to the card */
 296
 297         t = (socket->number) ? socket : socket + 1;
 298         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
 299         data = indirect_read16(t, PD67_EXT_DATA);
 300         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
 301
 302         return 0;
 303 }
 304
 305
 306 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 307 {
 308         struct pd6729_socket *socket
 309                         = container_of(sock, struct pd6729_socket, socket);
 310         unsigned char reg, data;
 311
 312         /* First, set the global controller options */
 313         indirect_write(socket, I365_GBLCTL, 0x00);
 314         indirect_write(socket, I365_GENCTL, 0x00);
 315
 316         /* Values for the IGENC register */
 317         socket->card_irq = state->io_irq;
 318
 319         reg = 0;
 320         /* The reset bit has "inverse" logic */
 321         if (!(state->flags & SS_RESET))
 322                 reg |= I365_PC_RESET;
 323         if (state->flags & SS_IOCARD)
 324                 reg |= I365_PC_IOCARD;
 325
 326         /* IGENC, Interrupt and General Control Register */
 327         indirect_write(socket, I365_INTCTL, reg);
 328
 329         /* Power registers */
 330
 331         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 332
 333         if (state->flags & SS_PWR_AUTO) {
 334                 dprintk("Auto power\n");
 335                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 336         }
 337         if (state->flags & SS_OUTPUT_ENA) {
 338                 dprintk("Power Enabled\n");
 339                 reg |= I365_PWR_OUT;    /* enable power */
 340         }
 341
 342         switch (state->Vcc) {
 343         case 0:
 344                 break;
 345         case 33:
 346                 dprintk("setting voltage to Vcc to 3.3V on socket %i\n",
 347                         socket->number);
 348                 reg |= I365_VCC_5V;
 349                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 350                 break;
 351         case 50:
 352                 dprintk("setting voltage to Vcc to 5V on socket %i\n",
 353                         socket->number);
 354                 reg |= I365_VCC_5V;
 355                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 356                 break;
 357         default:
 358                 dprintk("pd6729: pd6729_set_socket called with "
 359                                 "invalid VCC power value: %i\n",
 360                         state->Vcc);
 361                 return -EINVAL;
 362         }
 363
 364         switch (state->Vpp) {
 365         case 0:
 366                 dprintk("not setting Vpp on socket %i\n", socket->number);
 367                 break;
 368         case 33:
 369         case 50:
 370                 dprintk("setting Vpp to Vcc for socket %i\n", socket->number);
 371                 reg |= I365_VPP1_5V;
 372                 break;
 373         case 120:
 374                 dprintk("setting Vpp to 12.0\n");
 375                 reg |= I365_VPP1_12V;
 376                 break;
 377         default:
 378                 dprintk("pd6729: pd6729_set_socket called with invalid VPP power value: %i\n",
 379                         state->Vpp);
 380                 return -EINVAL;
 381         }
 382
 383         /* only write if changed */
 384         if (reg != indirect_read(socket, I365_POWER))
 385                 indirect_write(socket, I365_POWER, reg);
 386
 387         if (irq_mode == 1) {
 388                  /* all interrupts are to be done as PCI interrupts */
 389                 data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
 390         } else
 391                 data = 0;
 392
 393         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
 394         indirect_write(socket, PD67_EXT_DATA, data);
 395
 396         /* Enable specific interrupt events */
 397
 398         reg = 0x00;
 399         if (state->csc_mask & SS_DETECT) {
 400                 reg |= I365_CSC_DETECT;
 401         }
 402         if (state->flags & SS_IOCARD) {
 403                 if (state->csc_mask & SS_STSCHG)
 404                         reg |= I365_CSC_STSCHG;
 405         } else {
 406                 if (state->csc_mask & SS_BATDEAD)
 407                         reg |= I365_CSC_BVD1;
 408                 if (state->csc_mask & SS_BATWARN)
 409                         reg |= I365_CSC_BVD2;
 410                 if (state->csc_mask & SS_READY)
 411                         reg |= I365_CSC_READY;
 412         }
 413         if (irq_mode == 1)
 414                 reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
 415         indirect_write(socket, I365_CSCINT, reg);
 416
 417         reg = indirect_read(socket, I365_INTCTL);
 418         if (irq_mode == 1)
 419                 reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
 420         else
 421                 reg |= socket->card_irq;
 422         indirect_write(socket, I365_INTCTL, reg);
 423
 424         /* now clear the (probably bogus) pending stuff by doing a dummy read */
 425         (void)indirect_read(socket, I365_CSC);
 426
 427         return 0;
 428 }
 429
 430 static int pd6729_set_io_map(struct pcmcia_socket *sock,
 431                              struct pccard_io_map *io)
 432 {
 433         struct pd6729_socket *socket
 434                         = container_of(sock, struct pd6729_socket, socket);
 435         unsigned char map, ioctl;
 436
 437         map = io->map;
 438
 439         /* Check error conditions */
 440         if (map > 1) {
 441                 dprintk("pd6729_set_io_map with invalid map");
 442                 return -EINVAL;
 443         }
 444
 445         /* Turn off the window before changing anything */
 446         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
 447                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 448
 449         /* dprintk("set_io_map: Setting range to %x - %x\n",
 450            io->start, io->stop);*/
 451
 452         /* write the new values */
 453         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
 454         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
 455
 456         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 457
 458         if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 459         if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 460         if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 461
 462         indirect_write(socket, I365_IOCTL, ioctl);
 463
 464         /* Turn the window back on if needed */
 465         if (io->flags & MAP_ACTIVE)
 466                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 467
 468         return 0;
 469 }
 470
 471 static int pd6729_set_mem_map(struct pcmcia_socket *sock,
 472                               struct pccard_mem_map *mem)
 473 {
 474         struct pd6729_socket *socket
 475                          = container_of(sock, struct pd6729_socket, socket);
 476         unsigned short base, i;
 477         unsigned char map;
 478
 479         map = mem->map;
 480         if (map > 4) {
 481                 printk("pd6729_set_mem_map: invalid map");
 482                 return -EINVAL;
 483         }
 484
 485         if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
 486                 printk("pd6729_set_mem_map: invalid address / speed");
 487                 return -EINVAL;
 488         }
 489
 490         /* Turn off the window before changing anything */
 491         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
 492                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 493
 494         /* write the start address */
 495         base = I365_MEM(map);
 496         i = (mem->res->start >> 12) & 0x0fff;
 497         if (mem->flags & MAP_16BIT)
 498                 i |= I365_MEM_16BIT;
 499         if (mem->flags & MAP_0WS)
 500                 i |= I365_MEM_0WS;
 501         indirect_write16(socket, base + I365_W_START, i);
 502
 503         /* write the stop address */
 504
 505         i= (mem->res->end >> 12) & 0x0fff;
 506         switch (to_cycles(mem->speed)) {
 507         case 0:
 508                 break;
 509         case 1:
 510                 i |= I365_MEM_WS0;
 511                 break;
 512         case 2:
 513                 i |= I365_MEM_WS1;
 514                 break;
 515         default:
 516                 i |= I365_MEM_WS1 | I365_MEM_WS0;
 517                 break;
 518         }
 519
 520         indirect_write16(socket, base + I365_W_STOP, i);
 521
 522         /* Take care of high byte */
 523         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
 524         indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
 525
 526         /* card start */
 527
 528         i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
 529         if (mem->flags & MAP_WRPROT)
 530                 i |= I365_MEM_WRPROT;
 531         if (mem->flags & MAP_ATTRIB) {
 532                 /* dprintk("requesting attribute memory for socket %i\n",
 533                         socket->number);*/
 534                 i |= I365_MEM_REG;
 535         } else {
 536                 /* dprintk("requesting normal memory for socket %i\n",
 537                         socket->number);*/
 538         }
 539         indirect_write16(socket, base + I365_W_OFF, i);
 540
 541         /* Enable the window if necessary */
 542         if (mem->flags & MAP_ACTIVE)
 543                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 544
 545         return 0;
 546 }
 547
 548 static int pd6729_init(struct pcmcia_socket *sock)
 549 {
 550         int i;
 551         struct resource res = { .end = 0x0fff };
 552         pccard_io_map io = { 0, 0, 0, 0, 1 };
 553         pccard_mem_map mem = { .res = &res, };
 554
 555         pd6729_set_socket(sock, &dead_socket);
 556         for (i = 0; i < 2; i++) {
 557                 io.map = i;
 558                 pd6729_set_io_map(sock, &io);
 559         }
 560         for (i = 0; i < 5; i++) {
 561                 mem.map = i;
 562                 pd6729_set_mem_map(sock, &mem);
 563         }
 564
 565         return 0;
 566 }
 567
 568
 569 /* the pccard structure and its functions */
 570 static struct pccard_operations pd6729_operations = {
 571         .init                   = pd6729_init,
 572         .get_status             = pd6729_get_status,
 573         .set_socket             = pd6729_set_socket,
 574         .set_io_map             = pd6729_set_io_map,
 575         .set_mem_map            = pd6729_set_mem_map,
 576 };
 577
 578 static irqreturn_t pd6729_test(int irq, void *dev, struct pt_regs *regs)
 579 {
 580         dprintk("-> hit on irq %d\n", irq);
 581         return IRQ_HANDLED;
 582 }
 583
 584 static int pd6729_check_irq(int irq, int flags)
 585 {
 586         if (request_irq(irq, pd6729_test, flags, "x", pd6729_test) != 0)
 587                 return -1;
 588         free_irq(irq, pd6729_test);
 589         return 0;
 590 }
 591
 592 static u_int __devinit pd6729_isa_scan(void)
 593 {
 594         u_int mask0, mask = 0;
 595         int i;
 596
 597         if (irq_mode == 1) {
 598                 printk(KERN_INFO "pd6729: PCI card interrupts, "
 599                                                 "PCI status changes\n");
 600                 return 0;
 601         }
 602
 603         if (irq_list_count == 0)
 604                 mask0 = 0xffff;
 605         else
 606                 for (i = mask0 = 0; i < irq_list_count; i++)
 607                         mask0 |= (1<<irq_list[i]);
 608
 609         mask0 &= PD67_MASK;
 610
 611         /* just find interrupts that aren't in use */
 612         for (i = 0; i < 16; i++)
 613                 if ((mask0 & (1 << i)) && (pd6729_check_irq(i, 0) == 0))
 614                         mask |= (1 << i);
 615
 616         printk(KERN_INFO "pd6729: ISA irqs = ");
 617         for (i = 0; i < 16; i++)
 618                 if (mask & (1<<i))
 619                         printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
 620
 621         if (mask == 0) printk("none!");
 622
 623         printk("  polling status changes.\n");
 624
 625         return mask;
 626 }
 627
 628 static int __devinit pd6729_pci_probe(struct pci_dev *dev,
 629                                       const struct pci_device_id *id)
 630 {
 631         int i, j, ret;
 632         u_int mask;
 633         char configbyte;
 634         struct pd6729_socket *socket;
 635
 636         socket = kzalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS,
 637                          GFP_KERNEL);
 638         if (!socket)
 639                 return -ENOMEM;
 640
 641         if ((ret = pci_enable_device(dev)))
 642                 goto err_out_free_mem;
 643
 644         printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge "
 645                 "at 0x%lx on irq %d\n", pci_resource_start(dev, 0), dev->irq);
 646         /*
 647          * Since we have no memory BARs some firmware may not
 648          * have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
 649          */
 650         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
 651         if (!(configbyte & PCI_COMMAND_MEMORY)) {
 652                 printk(KERN_DEBUG "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
 653                 configbyte |= PCI_COMMAND_MEMORY;
 654                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
 655         }
 656
 657         ret = pci_request_regions(dev, "pd6729");
 658         if (ret) {
 659                 printk(KERN_INFO "pd6729: pci request region failed.\n");
 660                 goto err_out_disable;
 661         }
 662
 663         if (dev->irq == NO_IRQ)
 664                 irq_mode = 0;   /* fall back to ISA interrupt mode */
 665
 666         mask = pd6729_isa_scan();
 667         if (irq_mode == 0 && mask == 0) {
 668                 printk(KERN_INFO "pd6729: no ISA interrupt is available.\n");
 669                 goto err_out_free_res;
 670         }
 671
 672         for (i = 0; i < MAX_SOCKETS; i++) {
 673                 socket[i].io_base = pci_resource_start(dev, 0);
 674                 socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
 675                 socket[i].socket.map_size = 0x1000;
 676                 socket[i].socket.irq_mask = mask;
 677                 socket[i].socket.pci_irq  = dev->irq;
 678                 socket[i].socket.owner = THIS_MODULE;
 679
 680                 socket[i].number = i;
 681
 682                 socket[i].socket.ops = &pd6729_operations;
 683                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 684                 socket[i].socket.dev.dev = &dev->dev;
 685                 socket[i].socket.driver_data = &socket[i];
 686         }
 687
 688         pci_set_drvdata(dev, socket);
 689         if (irq_mode == 1) {
 690                 /* Register the interrupt handler */
 691                 if ((ret = request_irq(dev->irq, pd6729_interrupt, SA_SHIRQ,
 692                                                         "pd6729", socket))) {
 693                         printk(KERN_ERR "pd6729: Failed to register irq %d, "
 694                                                         "aborting\n", dev->irq);
 695                         goto err_out_free_res;
 696                 }
 697         } else {
 698                 /* poll Card status change */
 699                 init_timer(&socket->poll_timer);
 700                 socket->poll_timer.function = pd6729_interrupt_wrapper;
 701                 socket->poll_timer.data = (unsigned long)socket;
 702                 socket->poll_timer.expires = jiffies + HZ;
 703                 add_timer(&socket->poll_timer);
 704         }
 705
 706         for (i = 0; i < MAX_SOCKETS; i++) {
 707                 ret = pcmcia_register_socket(&socket[i].socket);
 708                 if (ret) {
 709                         printk(KERN_INFO "pd6729: pcmcia_register_socket "
 710                                                "failed.\n");
 711                         for (j = 0; j < i ; j++)
 712                                 pcmcia_unregister_socket(&socket[j].socket);
 713                         goto err_out_free_res2;
 714                 }
 715         }
 716
 717         return 0;
 718
 719  err_out_free_res2:
 720         if (irq_mode == 1)
 721                 free_irq(dev->irq, socket);
 722         else
 723                 del_timer_sync(&socket->poll_timer);
 724  err_out_free_res:
 725         pci_release_regions(dev);
 726  err_out_disable:
 727         pci_disable_device(dev);
 728
 729  err_out_free_mem:
 730         kfree(socket);
 731         return ret;
 732 }
 733
 734 static void __devexit pd6729_pci_remove(struct pci_dev *dev)
 735 {
 736         int i;
 737         struct pd6729_socket *socket = pci_get_drvdata(dev);
 738
 739         for (i = 0; i < MAX_SOCKETS; i++) {
 740                 /* Turn off all interrupt sources */
 741                 indirect_write(&socket[i], I365_CSCINT, 0);
 742                 indirect_write(&socket[i], I365_INTCTL, 0);
 743
 744                 pcmcia_unregister_socket(&socket[i].socket);
 745         }
 746
 747         if (irq_mode == 1)
 748                 free_irq(dev->irq, socket);
 749         else
 750                 del_timer_sync(&socket->poll_timer);
 751         pci_release_regions(dev);
 752         pci_disable_device(dev);
 753
 754         kfree(socket);
 755 }
 756
 757 static int pd6729_socket_suspend(struct pci_dev *dev, pm_message_t state)
 758 {
 759         return pcmcia_socket_dev_suspend(&dev->dev, state);
 760 }
 761
 762 static int pd6729_socket_resume(struct pci_dev *dev)
 763 {
 764         return pcmcia_socket_dev_resume(&dev->dev);
 765 }
 766
 767 static struct pci_device_id pd6729_pci_ids[] = {
 768         {
 769                 .vendor         = PCI_VENDOR_ID_CIRRUS,
 770                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
 771                 .subvendor      = PCI_ANY_ID,
 772                 .subdevice      = PCI_ANY_ID,
 773         },
 774         { }
 775 };
 776 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
 777
 778 static struct pci_driver pd6729_pci_drv = {
 779         .name           = "pd6729",
 780         .id_table       = pd6729_pci_ids,
 781         .probe          = pd6729_pci_probe,
 782         .remove         = __devexit_p(pd6729_pci_remove),
 783         .suspend        = pd6729_socket_suspend,
 784         .resume         = pd6729_socket_resume,
 785 };
 786
 787 static int pd6729_module_init(void)
 788 {
 789         return pci_register_driver(&pd6729_pci_drv);
 790 }
 791
 792 static void pd6729_module_exit(void)
 793 {
 794         pci_unregister_driver(&pd6729_pci_drv);
 795 }
 796
 797 module_init(pd6729_module_init);
 798 module_exit(pd6729_module_exit);