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/config.h>
  12 #include <linux/module.h>
  13 #include <linux/pci.h>
  14 #include <linux/init.h>
  15 #include <linux/workqueue.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/device.h>
  18
  19 #include <pcmcia/cs_types.h>
  20 #include <pcmcia/ss.h>
  21 #include <pcmcia/cs.h>
  22
  23 #include <asm/system.h>
  24 #include <asm/io.h>
  25
  26 #include "pd6729.h"
  27 #include "i82365.h"
  28 #include "cirrus.h"
  29
  30 MODULE_LICENSE("GPL");
  31 MODULE_DESCRIPTION("Driver for the Cirrus PD6729 PCI-PCMCIA bridge");
  32 MODULE_AUTHOR("Jun Komuro <komurojun@mbn.nifty.com>");
  33
  34 #define MAX_SOCKETS 2
  35
  36 /*
  37  * simple helper functions
  38  * External clock time, in nanoseconds.  120 ns = 8.33 MHz
  39  */
  40 #define to_cycles(ns)   ((ns)/120)
  41
  42 static spinlock_t port_lock = SPIN_LOCK_UNLOCKED;
  43
  44 /* basic value read/write functions */
  45
  46 static unsigned char indirect_read(struct pd6729_socket *socket, unsigned short reg)
  47 {
  48         unsigned long port;
  49         unsigned char val;
  50         unsigned long flags;
  51
  52         spin_lock_irqsave(&port_lock, flags);
  53         reg += socket->number * 0x40;
  54         port = socket->io_base;
  55         outb(reg, port);
  56         val = inb(port + 1);
  57         spin_unlock_irqrestore(&port_lock, flags);
  58
  59         return val;
  60 }
  61
  62 static unsigned short indirect_read16(struct pd6729_socket *socket, unsigned short reg)
  63 {
  64         unsigned long port;
  65         unsigned short tmp;
  66         unsigned long flags;
  67
  68         spin_lock_irqsave(&port_lock, flags);
  69         reg  = reg + socket->number * 0x40;
  70         port = socket->io_base;
  71         outb(reg, port);
  72         tmp = inb(port + 1);
  73         reg++;
  74         outb(reg, port);
  75         tmp = tmp | (inb(port + 1) << 8);
  76         spin_unlock_irqrestore(&port_lock, flags);
  77
  78         return tmp;
  79 }
  80
  81 static void indirect_write(struct pd6729_socket *socket, unsigned short reg, unsigned char value)
  82 {
  83         unsigned long port;
  84         unsigned long flags;
  85
  86         spin_lock_irqsave(&port_lock, flags);
  87         reg = reg + socket->number * 0x40;
  88         port = socket->io_base;
  89         outb(reg, port);
  90         outb(value, port + 1);
  91         spin_unlock_irqrestore(&port_lock, flags);
  92 }
  93
  94 static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg, unsigned char mask)
  95 {
  96         unsigned long port;
  97         unsigned char val;
  98         unsigned long flags;
  99
 100         spin_lock_irqsave(&port_lock, flags);
 101         reg = reg + socket->number * 0x40;
 102         port = socket->io_base;
 103         outb(reg, port);
 104         val = inb(port + 1);
 105         val |= mask;
 106         outb(reg, port);
 107         outb(val, port + 1);
 108         spin_unlock_irqrestore(&port_lock, flags);
 109 }
 110
 111 static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg, unsigned char mask)
 112 {
 113         unsigned long port;
 114         unsigned char val;
 115         unsigned long flags;
 116
 117         spin_lock_irqsave(&port_lock, flags);
 118         reg = reg + socket->number * 0x40;
 119         port = socket->io_base;
 120         outb(reg, port);
 121         val = inb(port + 1);
 122         val &= ~mask;
 123         outb(reg, port);
 124         outb(val, port + 1);
 125         spin_unlock_irqrestore(&port_lock, flags);
 126 }
 127
 128 static void indirect_write16(struct pd6729_socket *socket, unsigned short reg, unsigned short value)
 129 {
 130         unsigned long port;
 131         unsigned char val;
 132         unsigned long flags;
 133
 134         spin_lock_irqsave(&port_lock, flags);
 135         reg = reg + socket->number * 0x40;
 136         port = socket->io_base;
 137
 138         outb(reg, port);
 139         val = value & 255;
 140         outb(val, port + 1);
 141
 142         reg++;
 143
 144         outb(reg, port);
 145         val = value >> 8;
 146         outb(val, port + 1);
 147         spin_unlock_irqrestore(&port_lock, flags);
 148 }
 149
 150 /* Interrupt handler functionality */
 151
 152 static irqreturn_t pd6729_interrupt(int irq, void *dev, struct pt_regs *regs)
 153 {
 154         struct pd6729_socket *socket = (struct pd6729_socket *)dev;
 155         int i;
 156         int loopcount = 0;
 157         int handled = 0;
 158         unsigned int events, active = 0;
 159
 160         while (1) {
 161                 loopcount++;
 162                 if (loopcount > 20) {
 163                         printk(KERN_ERR "pd6729: infinite eventloop in interrupt\n");
 164                         break;
 165                 }
 166
 167                 active = 0;
 168
 169                 for (i = 0; i < MAX_SOCKETS; i++) {
 170                         unsigned int csc;
 171
 172                         /* card status change register */
 173                         csc = indirect_read(&socket[i], I365_CSC);
 174                         if (csc == 0)  /* no events on this socket */
 175                                 continue;
 176
 177                         handled = 1;
 178                         events = 0;
 179
 180                         if (csc & I365_CSC_DETECT) {
 181                                 events |= SS_DETECT;
 182                                 dprintk("Card detected in socket %i!\n", i);
 183                         }
 184
 185                         if (indirect_read(&socket[i], I365_INTCTL) & I365_PC_IOCARD) {
 186                                 /* For IO/CARDS, bit 0 means "read the card" */
 187                                 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
 188                         } else {
 189                                 /* Check for battery/ready events */
 190                                 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
 191                                 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
 192                                 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
 193                         }
 194
 195                         if (events) {
 196                                 pcmcia_parse_events(&socket[i].socket, events);
 197                         }
 198                         active |= events;
 199                 }
 200
 201                 if (active == 0) /* no more events to handle */
 202                         break;
 203         }
 204         return IRQ_RETVAL(handled);
 205 }
 206
 207 /* socket functions */
 208
 209 static void set_bridge_state(struct pd6729_socket *socket)
 210 {
 211         indirect_write(socket, I365_GBLCTL, 0x00);
 212         indirect_write(socket, I365_GENCTL, 0x00);
 213
 214         indirect_setbit(socket, I365_INTCTL, 0x08);
 215 }
 216
 217 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
 218 {
 219         struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
 220         unsigned int status;
 221         unsigned int data;
 222         struct pd6729_socket *t;
 223
 224         /* Interface Status Register */
 225         status = indirect_read(socket, I365_STATUS);
 226         *value = 0;
 227
 228         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
 229                 *value |= SS_DETECT;
 230         }
 231
 232         /*
 233          * IO cards have a different meaning of bits 0,1
 234          * Also notice the inverse-logic on the bits
 235          */
 236         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
 237                 /* IO card */
 238                 if (!(status & I365_CS_STSCHG))
 239                         *value |= SS_STSCHG;
 240         } else {
 241                 /* non I/O card */
 242                 if (!(status & I365_CS_BVD1))
 243                         *value |= SS_BATDEAD;
 244                 if (!(status & I365_CS_BVD2))
 245                         *value |= SS_BATWARN;
 246         }
 247
 248         if (status & I365_CS_WRPROT)
 249                 *value |= SS_WRPROT;    /* card is write protected */
 250
 251         if (status & I365_CS_READY)
 252                 *value |= SS_READY;     /* card is not busy */
 253
 254         if (status & I365_CS_POWERON)
 255                 *value |= SS_POWERON;   /* power is applied to the card */
 256
 257         t = (socket->number) ? socket : socket + 1;
 258         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
 259         data = indirect_read16(t, PD67_EXT_DATA);
 260         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
 261
 262         return 0;
 263 }
 264
 265
 266 static int pd6729_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 267 {
 268         struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
 269         unsigned char reg, vcc, vpp;
 270
 271         state->flags    = 0;
 272         state->Vcc      = 0;
 273         state->Vpp      = 0;
 274         state->io_irq   = 0;
 275         state->csc_mask = 0;
 276
 277         /*
 278          * First the power status of the socket
 279          * PCTRL - Power Control Register
 280          */
 281         reg = indirect_read(socket, I365_POWER);
 282
 283         if (reg & I365_PWR_AUTO)
 284                 state->flags |= SS_PWR_AUTO;  /* Automatic Power Switch */
 285
 286         if (reg & I365_PWR_OUT)
 287                 state->flags |= SS_OUTPUT_ENA; /* Output signals are enabled */
 288
 289         vcc = reg & I365_VCC_MASK;    vpp = reg & I365_VPP1_MASK;
 290
 291         if (reg & I365_VCC_5V) {
 292                 state->Vcc = (indirect_read(socket, PD67_MISC_CTL_1) &
 293                         PD67_MC1_VCC_3V) ? 33 : 50;
 294
 295                 if (vpp == I365_VPP1_5V) {
 296                         if (state->Vcc == 50)
 297                                 state->Vpp = 50;
 298                         else
 299                                 state->Vpp = 33;
 300                 }
 301                 if (vpp == I365_VPP1_12V)
 302                         state->Vpp = 120;
 303         }
 304
 305         /*
 306          * Now the IO card, RESET flags and IO interrupt
 307          * IGENC, Interrupt and General Control
 308          */
 309         reg = indirect_read(socket, I365_INTCTL);
 310
 311         if ((reg & I365_PC_RESET) == 0)
 312                 state->flags |= SS_RESET;
 313         if (reg & I365_PC_IOCARD)
 314                 state->flags |= SS_IOCARD; /* This is an IO card */
 315
 316         /* Set the IRQ number */
 317         state->io_irq = socket->socket.pci_irq;
 318
 319         /*
 320          * Card status change
 321          * CSCICR, Card Status Change Interrupt Configuration
 322          */
 323         reg = indirect_read(socket, I365_CSCINT);
 324
 325         if (reg & I365_CSC_DETECT)
 326                 state->csc_mask |= SS_DETECT; /* Card detect is enabled */
 327
 328         if (state->flags & SS_IOCARD) {/* IO Cards behave different */
 329                 if (reg & I365_CSC_STSCHG)
 330                         state->csc_mask |= SS_STSCHG;
 331         } else {
 332                 if (reg & I365_CSC_BVD1)
 333                         state->csc_mask |= SS_BATDEAD;
 334                 if (reg & I365_CSC_BVD2)
 335                         state->csc_mask |= SS_BATWARN;
 336                 if (reg & I365_CSC_READY)
 337                         state->csc_mask |= SS_READY;
 338         }
 339
 340         return 0;
 341 }
 342
 343 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 344 {
 345         struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
 346         unsigned char reg;
 347
 348         /* First, set the global controller options */
 349
 350         set_bridge_state(socket);
 351
 352         /* Values for the IGENC register */
 353
 354         reg = 0;
 355         /* The reset bit has "inverse" logic */
 356         if (!(state->flags & SS_RESET))
 357                 reg = reg | I365_PC_RESET;
 358         if (state->flags & SS_IOCARD)
 359                 reg = reg | I365_PC_IOCARD;
 360
 361         /* IGENC, Interrupt and General Control Register */
 362         indirect_write(socket, I365_INTCTL, reg);
 363
 364         /* Power registers */
 365
 366         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 367
 368         if (state->flags & SS_PWR_AUTO) {
 369                 dprintk("Auto power\n");
 370                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 371         }
 372         if (state->flags & SS_OUTPUT_ENA) {
 373                 dprintk("Power Enabled\n");
 374                 reg |= I365_PWR_OUT;    /* enable power */
 375         }
 376
 377         switch (state->Vcc) {
 378         case 0:
 379                 break;
 380         case 33:
 381                 dprintk("setting voltage to Vcc to 3.3V on socket %i\n",
 382                         socket->number);
 383                 reg |= I365_VCC_5V;
 384                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 385                 break;
 386         case 50:
 387                 dprintk("setting voltage to Vcc to 5V on socket %i\n",
 388                         socket->number);
 389                 reg |= I365_VCC_5V;
 390                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 391                 break;
 392         default:
 393                 dprintk("pd6729: pd6729_set_socket called with invalid VCC power value: %i\n",
 394                         state->Vcc);
 395                 return -EINVAL;
 396         }
 397
 398         switch (state->Vpp) {
 399         case 0:
 400                 dprintk("not setting Vpp on socket %i\n", socket->number);
 401                 break;
 402         case 33:
 403         case 50:
 404                 dprintk("setting Vpp to Vcc for socket %i\n", socket->number);
 405                 reg |= I365_VPP1_5V;
 406                 break;
 407         case 120:
 408                 dprintk("setting Vpp to 12.0\n");
 409                 reg |= I365_VPP1_12V;
 410                 break;
 411         default:
 412                 dprintk("pd6729: pd6729_set_socket called with invalid VPP power value: %i\n",
 413                         state->Vpp);
 414                 return -EINVAL;
 415         }
 416
 417         /* only write if changed */
 418         if (reg != indirect_read(socket, I365_POWER))
 419                 indirect_write(socket, I365_POWER, reg);
 420
 421         /* Now, specifiy that all interrupts are to be done as PCI interrupts */
 422         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
 423         indirect_write(socket, PD67_EXT_DATA, PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ);
 424
 425         /* Enable specific interrupt events */
 426
 427         reg = 0x00;
 428         if (state->csc_mask & SS_DETECT) {
 429                 reg |= I365_CSC_DETECT;
 430         }
 431         if (state->flags & SS_IOCARD) {
 432                 if (state->csc_mask & SS_STSCHG)
 433                         reg |= I365_CSC_STSCHG;
 434         } else {
 435                 if (state->csc_mask & SS_BATDEAD)
 436                         reg |= I365_CSC_BVD1;
 437                 if (state->csc_mask & SS_BATWARN)
 438                         reg |= I365_CSC_BVD2;
 439                 if (state->csc_mask & SS_READY)
 440                         reg |= I365_CSC_READY;
 441         }
 442         reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
 443         indirect_write(socket, I365_CSCINT, reg);
 444
 445         reg = indirect_read(socket, I365_INTCTL);
 446         reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
 447         indirect_write(socket, I365_INTCTL, reg);
 448
 449         /* now clear the (probably bogus) pending stuff by doing a dummy read */
 450         (void)indirect_read(socket, I365_CSC);
 451
 452         return 0;
 453 }
 454
 455 static int pd6729_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 456 {
 457         struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
 458         unsigned char map, ioctl;
 459
 460         map = io->map;
 461
 462         /* Check error conditions */
 463         if (map > 1) {
 464                 dprintk("pd6729_set_io_map with invalid map");
 465                 return -EINVAL;
 466         }
 467
 468         /* Turn off the window before changing anything */
 469         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
 470                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 471
 472 /*      dprintk("set_io_map: Setting range to %x - %x\n", io->start, io->stop);*/
 473
 474         /* write the new values */
 475         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
 476         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
 477
 478         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 479
 480         if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 481         if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 482         if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 483
 484         indirect_write(socket, I365_IOCTL, ioctl);
 485
 486         /* Turn the window back on if needed */
 487         if (io->flags & MAP_ACTIVE)
 488                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 489
 490         return 0;
 491 }
 492
 493 static int pd6729_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 494 {
 495         struct pd6729_socket *socket = container_of(sock, struct pd6729_socket, socket);
 496         unsigned short base, i;
 497         unsigned char map;
 498
 499         map = mem->map;
 500         if (map > 4) {
 501                 printk("pd6729_set_mem_map: invalid map");
 502                 return -EINVAL;
 503         }
 504
 505         if ((mem->sys_start > mem->sys_stop) || (mem->speed > 1000)) {
 506                 printk("pd6729_set_mem_map: invalid address / speed");
 507                 /* printk("invalid mem map for socket %i : %lx to %lx with a start of %x\n",
 508                          sock, mem->sys_start, mem->sys_stop, mem->card_start); */
 509                 return -EINVAL;
 510         }
 511
 512         /* Turn off the window before changing anything */
 513         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
 514                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 515
 516         /* write the start address */
 517         base = I365_MEM(map);
 518         i = (mem->sys_start >> 12) & 0x0fff;
 519         if (mem->flags & MAP_16BIT)
 520                 i |= I365_MEM_16BIT;
 521         if (mem->flags & MAP_0WS)
 522                 i |= I365_MEM_0WS;
 523         indirect_write16(socket, base + I365_W_START, i);
 524
 525         /* write the stop address */
 526
 527         i= (mem->sys_stop >> 12) & 0x0fff;
 528         switch (to_cycles(mem->speed)) {
 529         case 0:
 530                 break;
 531         case 1:
 532                 i |= I365_MEM_WS0;
 533                 break;
 534         case 2:
 535                 i |= I365_MEM_WS1;
 536                 break;
 537         default:
 538                 i |= I365_MEM_WS1 | I365_MEM_WS0;
 539                 break;
 540         }
 541
 542         indirect_write16(socket, base + I365_W_STOP, i);
 543
 544         /* Take care of high byte */
 545         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
 546         indirect_write(socket, PD67_EXT_DATA, mem->sys_start >> 24);
 547
 548         /* card start */
 549
 550         i = ((mem->card_start - mem->sys_start) >> 12) & 0x3fff;
 551         if (mem->flags & MAP_WRPROT)
 552                 i |= I365_MEM_WRPROT;
 553         if (mem->flags & MAP_ATTRIB) {
 554 /*              dprintk("requesting attribute memory for socket %i\n",
 555                         socket->number);*/
 556                 i |= I365_MEM_REG;
 557         } else {
 558 /*              dprintk("requesting normal memory for socket %i\n",
 559                         socket->number);*/
 560         }
 561         indirect_write16(socket, base + I365_W_OFF, i);
 562
 563         /* Enable the window if necessary */
 564         if (mem->flags & MAP_ACTIVE)
 565                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 566
 567         return 0;
 568 }
 569
 570 static int pd6729_suspend(struct pcmcia_socket *sock)
 571 {
 572         return pd6729_set_socket(sock, &dead_socket);
 573 }
 574
 575 static int pd6729_init(struct pcmcia_socket *sock)
 576 {
 577         int i;
 578         struct resource res = { .end = 0x0fff };
 579         pccard_io_map io = { 0, 0, 0, 0, 1 };
 580         pccard_mem_map mem = { .res = &res, .sys_stop = 0x0fff };
 581
 582         pd6729_set_socket(sock, &dead_socket);
 583         for (i = 0; i < 2; i++) {
 584                 io.map = i;
 585                 pd6729_set_io_map(sock, &io);
 586         }
 587         for (i = 0; i < 5; i++) {
 588                 mem.map = i;
 589                 pd6729_set_mem_map(sock, &mem);
 590         }
 591
 592         return 0;
 593 }
 594
 595
 596 /* the pccard structure and its functions */
 597 static struct pccard_operations pd6729_operations = {
 598         .init                   = pd6729_init,
 599         .suspend                = pd6729_suspend,
 600         .get_status             = pd6729_get_status,
 601         .get_socket             = pd6729_get_socket,
 602         .set_socket             = pd6729_set_socket,
 603         .set_io_map             = pd6729_set_io_map,
 604         .set_mem_map            = pd6729_set_mem_map,
 605 };
 606
 607 static int __devinit pd6729_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 608 {
 609         int i, j, ret;
 610         char configbyte;
 611         struct pd6729_socket *socket;
 612
 613         socket = kmalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS, GFP_KERNEL);
 614         if (!socket)
 615                 return -ENOMEM;
 616
 617         memset(socket, 0, sizeof(struct pd6729_socket) * MAX_SOCKETS);
 618
 619         if ((ret = pci_enable_device(dev)))
 620                 goto err_out_free_mem;
 621
 622         printk(KERN_INFO "pd6729: Cirrus PD6729 PCI to PCMCIA Bridge at 0x%lx on irq %d\n",
 623                 pci_resource_start(dev, 0), dev->irq);
 624         printk(KERN_INFO "pd6729: configured as a %d socket device.\n", MAX_SOCKETS);
 625         /*
 626          * Since we have no memory BARs some firmware we may not
 627          * have had PCI_COMMAND_MEM enabled, yet the device needs
 628          * it.
 629          */
 630         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
 631         if (!(configbyte & PCI_COMMAND_MEMORY)) {
 632                 printk(KERN_DEBUG "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
 633                 configbyte |= PCI_COMMAND_MEMORY;
 634                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
 635         }
 636
 637         ret = pci_request_regions(dev, "pd6729");
 638         if (ret) {
 639                 printk(KERN_INFO "pd6729: pci request region failed.\n");
 640                 goto err_out_disable;
 641         }
 642
 643         for (i = 0; i < MAX_SOCKETS; i++) {
 644                 socket[i].io_base = pci_resource_start(dev, 0);
 645                 socket[i].socket.features |= SS_CAP_PCCARD;
 646                 socket[i].socket.map_size = 0x1000;
 647                 socket[i].socket.irq_mask = 0;
 648                 socket[i].socket.pci_irq  = dev->irq;
 649                 socket[i].socket.owner = THIS_MODULE;
 650
 651                 socket[i].number = i;
 652
 653                 socket[i].socket.ops = &pd6729_operations;
 654                 socket[i].socket.dev.dev = &dev->dev;
 655                 socket[i].socket.driver_data = &socket[i];
 656         }
 657
 658         pci_set_drvdata(dev, socket);
 659
 660         /* Register the interrupt handler */
 661         if ((ret = request_irq(dev->irq, pd6729_interrupt, SA_SHIRQ, "pd6729", socket))) {
 662                 printk(KERN_ERR "pd6729: Failed to register irq %d, aborting\n", dev->irq);
 663                 goto err_out_free_res;
 664         }
 665
 666         for (i = 0; i < MAX_SOCKETS; i++) {
 667                 ret = pcmcia_register_socket(&socket[i].socket);
 668                 if (ret) {
 669                         printk(KERN_INFO "pd6729: pcmcia_register_socket failed.\n");
 670                         for (j = 0; j < i ; j++)
 671                                 pcmcia_unregister_socket(&socket[j].socket);
 672                         goto err_out_free_res2;
 673                 }
 674         }
 675
 676         return 0;
 677
 678  err_out_free_res2:
 679         free_irq(dev->irq, socket);
 680  err_out_free_res:
 681         pci_release_regions(dev);
 682  err_out_disable:
 683         pci_disable_device(dev);
 684
 685  err_out_free_mem:
 686         kfree(socket);
 687         return ret;
 688 }
 689
 690 static void __devexit pd6729_pci_remove(struct pci_dev *dev)
 691 {
 692         int i;
 693         struct pd6729_socket *socket = pci_get_drvdata(dev);
 694
 695         for (i = 0; i < MAX_SOCKETS; i++)
 696                 pcmcia_unregister_socket(&socket[i].socket);
 697
 698         free_irq(dev->irq, socket);
 699         pci_release_regions(dev);
 700         pci_disable_device(dev);
 701
 702         kfree(socket);
 703 }
 704
 705 static int pd6729_socket_suspend(struct pci_dev *dev, u32 state)
 706 {
 707         return pcmcia_socket_dev_suspend(&dev->dev, state);
 708 }
 709
 710 static int pd6729_socket_resume(struct pci_dev *dev)
 711 {
 712         return pcmcia_socket_dev_resume(&dev->dev);
 713 }
 714
 715 static struct pci_device_id pd6729_pci_ids[] = {
 716         {
 717                 .vendor         = PCI_VENDOR_ID_CIRRUS,
 718                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
 719                 .subvendor      = PCI_ANY_ID,
 720                 .subdevice      = PCI_ANY_ID,
 721         },
 722         { }
 723 };
 724 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
 725
 726 static struct pci_driver pd6729_pci_drv = {
 727         .name           = "pd6729",
 728         .id_table       = pd6729_pci_ids,
 729         .probe          = pd6729_pci_probe,
 730         .remove         = __devexit_p(pd6729_pci_remove),
 731         .suspend        = pd6729_socket_suspend,
 732         .resume         = pd6729_socket_resume,
 733 };
 734
 735 static int pd6729_module_init(void)
 736 {
 737         return pci_module_init(&pd6729_pci_drv);
 738 }
 739
 740 static void pd6729_module_exit(void)
 741 {
 742         pci_unregister_driver(&pd6729_pci_drv);
 743 }
 744
 745 module_init(pd6729_module_init);
 746 module_exit(pd6729_module_exit);