SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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/slab.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 #include <linux/io.h>
  19
  20 #include <pcmcia/cs_types.h>
  21 #include <pcmcia/ss.h>
  22 #include <pcmcia/cs.h>
  23
  24 #include <asm/system.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 #ifndef NO_IRQ
  43 #define NO_IRQ  ((unsigned int)(0))
  44 #endif
  45
  46 /*
  47  * PARAMETERS
  48  *  irq_mode=n
  49  *     Specifies the interrupt delivery mode.  The default (1) is to use PCI
  50  *     interrupts; a value of 0 selects ISA interrupts. This must be set for
  51  *     correct operation of PCI card readers.
  52  */
  53
  54 static int irq_mode = 1; /* 0 = ISA interrupt, 1 = PCI interrupt */
  55
  56 module_param(irq_mode, int, 0444);
  57 MODULE_PARM_DESC(irq_mode,
  58                 "interrupt delivery mode. 0 = ISA, 1 = PCI. default is 1");
  59
  60 static DEFINE_SPINLOCK(port_lock);
  61
  62 /* basic value read/write functions */
  63
  64 static unsigned char indirect_read(struct pd6729_socket *socket,
  65                                    unsigned short reg)
  66 {
  67         unsigned long port;
  68         unsigned char val;
  69         unsigned long flags;
  70
  71         spin_lock_irqsave(&port_lock, flags);
  72         reg += socket->number * 0x40;
  73         port = socket->io_base;
  74         outb(reg, port);
  75         val = inb(port + 1);
  76         spin_unlock_irqrestore(&port_lock, flags);
  77
  78         return val;
  79 }
  80
  81 static unsigned short indirect_read16(struct pd6729_socket *socket,
  82                                       unsigned short reg)
  83 {
  84         unsigned long port;
  85         unsigned short tmp;
  86         unsigned long flags;
  87
  88         spin_lock_irqsave(&port_lock, flags);
  89         reg  = reg + socket->number * 0x40;
  90         port = socket->io_base;
  91         outb(reg, port);
  92         tmp = inb(port + 1);
  93         reg++;
  94         outb(reg, port);
  95         tmp = tmp | (inb(port + 1) << 8);
  96         spin_unlock_irqrestore(&port_lock, flags);
  97
  98         return tmp;
  99 }
 100
 101 static void indirect_write(struct pd6729_socket *socket, unsigned short reg,
 102                            unsigned char value)
 103 {
 104         unsigned long port;
 105         unsigned long flags;
 106
 107         spin_lock_irqsave(&port_lock, flags);
 108         reg = reg + socket->number * 0x40;
 109         port = socket->io_base;
 110         outb(reg, port);
 111         outb(value, port + 1);
 112         spin_unlock_irqrestore(&port_lock, flags);
 113 }
 114
 115 static void indirect_setbit(struct pd6729_socket *socket, unsigned short reg,
 116                             unsigned char mask)
 117 {
 118         unsigned long port;
 119         unsigned char val;
 120         unsigned long flags;
 121
 122         spin_lock_irqsave(&port_lock, flags);
 123         reg = reg + socket->number * 0x40;
 124         port = socket->io_base;
 125         outb(reg, port);
 126         val = inb(port + 1);
 127         val |= mask;
 128         outb(reg, port);
 129         outb(val, port + 1);
 130         spin_unlock_irqrestore(&port_lock, flags);
 131 }
 132
 133 static void indirect_resetbit(struct pd6729_socket *socket, unsigned short reg,
 134                               unsigned char mask)
 135 {
 136         unsigned long port;
 137         unsigned char val;
 138         unsigned long flags;
 139
 140         spin_lock_irqsave(&port_lock, flags);
 141         reg = reg + socket->number * 0x40;
 142         port = socket->io_base;
 143         outb(reg, port);
 144         val = inb(port + 1);
 145         val &= ~mask;
 146         outb(reg, port);
 147         outb(val, port + 1);
 148         spin_unlock_irqrestore(&port_lock, flags);
 149 }
 150
 151 static void indirect_write16(struct pd6729_socket *socket, unsigned short reg,
 152                              unsigned short value)
 153 {
 154         unsigned long port;
 155         unsigned char val;
 156         unsigned long flags;
 157
 158         spin_lock_irqsave(&port_lock, flags);
 159         reg = reg + socket->number * 0x40;
 160         port = socket->io_base;
 161
 162         outb(reg, port);
 163         val = value & 255;
 164         outb(val, port + 1);
 165
 166         reg++;
 167
 168         outb(reg, port);
 169         val = value >> 8;
 170         outb(val, port + 1);
 171         spin_unlock_irqrestore(&port_lock, flags);
 172 }
 173
 174 /* Interrupt handler functionality */
 175
 176 static irqreturn_t pd6729_interrupt(int irq, void *dev)
 177 {
 178         struct pd6729_socket *socket = (struct pd6729_socket *)dev;
 179         int i;
 180         int loopcount = 0;
 181         int handled = 0;
 182         unsigned int events, active = 0;
 183
 184         while (1) {
 185                 loopcount++;
 186                 if (loopcount > 20) {
 187                         printk(KERN_ERR "pd6729: infinite eventloop "
 188                                "in interrupt\n");
 189                         break;
 190                 }
 191
 192                 active = 0;
 193
 194                 for (i = 0; i < MAX_SOCKETS; i++) {
 195                         unsigned int csc;
 196
 197                         /* card status change register */
 198                         csc = indirect_read(&socket[i], I365_CSC);
 199                         if (csc == 0)  /* no events on this socket */
 200                                 continue;
 201
 202                         handled = 1;
 203                         events = 0;
 204
 205                         if (csc & I365_CSC_DETECT) {
 206                                 events |= SS_DETECT;
 207                                 dev_vdbg(&socket[i].socket.dev,
 208                                         "Card detected in socket %i!\n", i);
 209                         }
 210
 211                         if (indirect_read(&socket[i], I365_INTCTL)
 212                                                 & I365_PC_IOCARD) {
 213                                 /* For IO/CARDS, bit 0 means "read the card" */
 214                                 events |= (csc & I365_CSC_STSCHG)
 215                                                 ? SS_STSCHG : 0;
 216                         } else {
 217                                 /* Check for battery/ready events */
 218                                 events |= (csc & I365_CSC_BVD1)
 219                                                 ? SS_BATDEAD : 0;
 220                                 events |= (csc & I365_CSC_BVD2)
 221                                                 ? SS_BATWARN : 0;
 222                                 events |= (csc & I365_CSC_READY)
 223                                                 ? SS_READY : 0;
 224                         }
 225
 226                         if (events)
 227                                 pcmcia_parse_events(&socket[i].socket, events);
 228
 229                         active |= events;
 230                 }
 231
 232                 if (active == 0) /* no more events to handle */
 233                         break;
 234         }
 235         return IRQ_RETVAL(handled);
 236 }
 237
 238 /* socket functions */
 239
 240 static void pd6729_interrupt_wrapper(unsigned long data)
 241 {
 242         struct pd6729_socket *socket = (struct pd6729_socket *) data;
 243
 244         pd6729_interrupt(0, (void *)socket);
 245         mod_timer(&socket->poll_timer, jiffies + HZ);
 246 }
 247
 248 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
 249 {
 250         struct pd6729_socket *socket
 251                         = container_of(sock, struct pd6729_socket, socket);
 252         unsigned int status;
 253         unsigned int data;
 254         struct pd6729_socket *t;
 255
 256         /* Interface Status Register */
 257         status = indirect_read(socket, I365_STATUS);
 258         *value = 0;
 259
 260         if ((status & I365_CS_DETECT) == I365_CS_DETECT)
 261                 *value |= SS_DETECT;
 262
 263         /*
 264          * IO cards have a different meaning of bits 0,1
 265          * Also notice the inverse-logic on the bits
 266          */
 267         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
 268                 /* IO card */
 269                 if (!(status & I365_CS_STSCHG))
 270                         *value |= SS_STSCHG;
 271         } else {
 272                 /* non I/O card */
 273                 if (!(status & I365_CS_BVD1))
 274                         *value |= SS_BATDEAD;
 275                 if (!(status & I365_CS_BVD2))
 276                         *value |= SS_BATWARN;
 277         }
 278
 279         if (status & I365_CS_WRPROT)
 280                 *value |= SS_WRPROT;    /* card is write protected */
 281
 282         if (status & I365_CS_READY)
 283                 *value |= SS_READY;     /* card is not busy */
 284
 285         if (status & I365_CS_POWERON)
 286                 *value |= SS_POWERON;   /* power is applied to the card */
 287
 288         t = (socket->number) ? socket : socket + 1;
 289         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
 290         data = indirect_read16(t, PD67_EXT_DATA);
 291         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
 292
 293         return 0;
 294 }
 295
 296
 297 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 298 {
 299         struct pd6729_socket *socket
 300                         = container_of(sock, struct pd6729_socket, socket);
 301         unsigned char reg, data;
 302
 303         /* First, set the global controller options */
 304         indirect_write(socket, I365_GBLCTL, 0x00);
 305         indirect_write(socket, I365_GENCTL, 0x00);
 306
 307         /* Values for the IGENC register */
 308         socket->card_irq = state->io_irq;
 309
 310         reg = 0;
 311         /* The reset bit has "inverse" logic */
 312         if (!(state->flags & SS_RESET))
 313                 reg |= I365_PC_RESET;
 314         if (state->flags & SS_IOCARD)
 315                 reg |= I365_PC_IOCARD;
 316
 317         /* IGENC, Interrupt and General Control Register */
 318         indirect_write(socket, I365_INTCTL, reg);
 319
 320         /* Power registers */
 321
 322         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 323
 324         if (state->flags & SS_PWR_AUTO) {
 325                 dev_dbg(&sock->dev, "Auto power\n");
 326                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 327         }
 328         if (state->flags & SS_OUTPUT_ENA) {
 329                 dev_dbg(&sock->dev, "Power Enabled\n");
 330                 reg |= I365_PWR_OUT;    /* enable power */
 331         }
 332
 333         switch (state->Vcc) {
 334         case 0:
 335                 break;
 336         case 33:
 337                 dev_dbg(&sock->dev,
 338                         "setting voltage to Vcc to 3.3V on socket %i\n",
 339                         socket->number);
 340                 reg |= I365_VCC_5V;
 341                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 342                 break;
 343         case 50:
 344                 dev_dbg(&sock->dev,
 345                         "setting voltage to Vcc to 5V on socket %i\n",
 346                         socket->number);
 347                 reg |= I365_VCC_5V;
 348                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 349                 break;
 350         default:
 351                 dev_dbg(&sock->dev,
 352                         "pd6729_set_socket called with invalid VCC power "
 353                         "value: %i\n", state->Vcc);
 354                 return -EINVAL;
 355         }
 356
 357         switch (state->Vpp) {
 358         case 0:
 359                 dev_dbg(&sock->dev, "not setting Vpp on socket %i\n",
 360                         socket->number);
 361                 break;
 362         case 33:
 363         case 50:
 364                 dev_dbg(&sock->dev, "setting Vpp to Vcc for socket %i\n",
 365                         socket->number);
 366                 reg |= I365_VPP1_5V;
 367                 break;
 368         case 120:
 369                 dev_dbg(&sock->dev, "setting Vpp to 12.0\n");
 370                 reg |= I365_VPP1_12V;
 371                 break;
 372         default:
 373                 dev_dbg(&sock->dev, "pd6729: pd6729_set_socket called with "
 374                         "invalid VPP power value: %i\n", state->Vpp);
 375                 return -EINVAL;
 376         }
 377
 378         /* only write if changed */
 379         if (reg != indirect_read(socket, I365_POWER))
 380                 indirect_write(socket, I365_POWER, reg);
 381
 382         if (irq_mode == 1) {
 383                 /* all interrupts are to be done as PCI interrupts */
 384                 data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
 385         } else
 386                 data = 0;
 387
 388         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
 389         indirect_write(socket, PD67_EXT_DATA, data);
 390
 391         /* Enable specific interrupt events */
 392
 393         reg = 0x00;
 394         if (state->csc_mask & SS_DETECT)
 395                 reg |= I365_CSC_DETECT;
 396
 397         if (state->flags & SS_IOCARD) {
 398                 if (state->csc_mask & SS_STSCHG)
 399                         reg |= I365_CSC_STSCHG;
 400         } else {
 401                 if (state->csc_mask & SS_BATDEAD)
 402                         reg |= I365_CSC_BVD1;
 403                 if (state->csc_mask & SS_BATWARN)
 404                         reg |= I365_CSC_BVD2;
 405                 if (state->csc_mask & SS_READY)
 406                         reg |= I365_CSC_READY;
 407         }
 408         if (irq_mode == 1)
 409                 reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
 410         indirect_write(socket, I365_CSCINT, reg);
 411
 412         reg = indirect_read(socket, I365_INTCTL);
 413         if (irq_mode == 1)
 414                 reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
 415         else
 416                 reg |= socket->card_irq;
 417         indirect_write(socket, I365_INTCTL, reg);
 418
 419         /* now clear the (probably bogus) pending stuff by doing a dummy read */
 420         (void)indirect_read(socket, I365_CSC);
 421
 422         return 0;
 423 }
 424
 425 static int pd6729_set_io_map(struct pcmcia_socket *sock,
 426                              struct pccard_io_map *io)
 427 {
 428         struct pd6729_socket *socket
 429                         = container_of(sock, struct pd6729_socket, socket);
 430         unsigned char map, ioctl;
 431
 432         map = io->map;
 433
 434         /* Check error conditions */
 435         if (map > 1) {
 436                 dev_dbg(&sock->dev, "pd6729_set_io_map with invalid map\n");
 437                 return -EINVAL;
 438         }
 439
 440         /* Turn off the window before changing anything */
 441         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
 442                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 443
 444         /* dev_dbg(&sock->dev, "set_io_map: Setting range to %x - %x\n",
 445            io->start, io->stop);*/
 446
 447         /* write the new values */
 448         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
 449         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
 450
 451         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 452
 453         if (io->flags & MAP_0WS)
 454                 ioctl |= I365_IOCTL_0WS(map);
 455         if (io->flags & MAP_16BIT)
 456                 ioctl |= I365_IOCTL_16BIT(map);
 457         if (io->flags & MAP_AUTOSZ)
 458                 ioctl |= I365_IOCTL_IOCS16(map);
 459
 460         indirect_write(socket, I365_IOCTL, ioctl);
 461
 462         /* Turn the window back on if needed */
 463         if (io->flags & MAP_ACTIVE)
 464                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 465
 466         return 0;
 467 }
 468
 469 static int pd6729_set_mem_map(struct pcmcia_socket *sock,
 470                               struct pccard_mem_map *mem)
 471 {
 472         struct pd6729_socket *socket
 473                          = container_of(sock, struct pd6729_socket, socket);
 474         unsigned short base, i;
 475         unsigned char map;
 476
 477         map = mem->map;
 478         if (map > 4) {
 479                 dev_warn(&sock->dev, "invalid map requested\n");
 480                 return -EINVAL;
 481         }
 482
 483         if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
 484                 dev_warn(&sock->dev, "invalid invalid address / speed\n");
 485                 return -EINVAL;
 486         }
 487
 488         /* Turn off the window before changing anything */
 489         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
 490                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 491
 492         /* write the start address */
 493         base = I365_MEM(map);
 494         i = (mem->res->start >> 12) & 0x0fff;
 495         if (mem->flags & MAP_16BIT)
 496                 i |= I365_MEM_16BIT;
 497         if (mem->flags & MAP_0WS)
 498                 i |= I365_MEM_0WS;
 499         indirect_write16(socket, base + I365_W_START, i);
 500
 501         /* write the stop address */
 502
 503         i = (mem->res->end >> 12) & 0x0fff;
 504         switch (to_cycles(mem->speed)) {
 505         case 0:
 506                 break;
 507         case 1:
 508                 i |= I365_MEM_WS0;
 509                 break;
 510         case 2:
 511                 i |= I365_MEM_WS1;
 512                 break;
 513         default:
 514                 i |= I365_MEM_WS1 | I365_MEM_WS0;
 515                 break;
 516         }
 517
 518         indirect_write16(socket, base + I365_W_STOP, i);
 519
 520         /* Take care of high byte */
 521         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
 522         indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
 523
 524         /* card start */
 525
 526         i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
 527         if (mem->flags & MAP_WRPROT)
 528                 i |= I365_MEM_WRPROT;
 529         if (mem->flags & MAP_ATTRIB) {
 530                 /* dev_dbg(&sock->dev, "requesting attribute memory for "
 531                    "socket %i\n", socket->number);*/
 532                 i |= I365_MEM_REG;
 533         } else {
 534                 /* dev_dbg(&sock->dev, "requesting normal memory for "
 535                    "socket %i\n", socket->number);*/
 536         }
 537         indirect_write16(socket, base + I365_W_OFF, i);
 538
 539         /* Enable the window if necessary */
 540         if (mem->flags & MAP_ACTIVE)
 541                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 542
 543         return 0;
 544 }
 545
 546 static int pd6729_init(struct pcmcia_socket *sock)
 547 {
 548         int i;
 549         struct resource res = { .end = 0x0fff };
 550         pccard_io_map io = { 0, 0, 0, 0, 1 };
 551         pccard_mem_map mem = { .res = &res, };
 552
 553         pd6729_set_socket(sock, &dead_socket);
 554         for (i = 0; i < 2; i++) {
 555                 io.map = i;
 556                 pd6729_set_io_map(sock, &io);
 557         }
 558         for (i = 0; i < 5; i++) {
 559                 mem.map = i;
 560                 pd6729_set_mem_map(sock, &mem);
 561         }
 562
 563         return 0;
 564 }
 565
 566
 567 /* the pccard structure and its functions */
 568 static struct pccard_operations pd6729_operations = {
 569         .init                   = pd6729_init,
 570         .get_status             = pd6729_get_status,
 571         .set_socket             = pd6729_set_socket,
 572         .set_io_map             = pd6729_set_io_map,
 573         .set_mem_map            = pd6729_set_mem_map,
 574 };
 575
 576 static irqreturn_t pd6729_test(int irq, void *dev)
 577 {
 578         pr_devel("-> hit on irq %d\n", irq);
 579         return IRQ_HANDLED;
 580 }
 581
 582 static int pd6729_check_irq(int irq)
 583 {
 584         int ret;
 585
 586         ret = request_irq(irq, pd6729_test, IRQF_PROBE_SHARED, "x",
 587                           pd6729_test);
 588         if (ret)
 589                 return -1;
 590
 591         free_irq(irq, pd6729_test);
 592         return 0;
 593 }
 594
 595 static u_int __devinit pd6729_isa_scan(void)
 596 {
 597         u_int mask0, mask = 0;
 598         int i;
 599
 600         if (irq_mode == 1) {
 601                 printk(KERN_INFO "pd6729: PCI card interrupts, "
 602                        "PCI status changes\n");
 603                 return 0;
 604         }
 605
 606         mask0 = PD67_MASK;
 607
 608         /* just find interrupts that aren't in use */
 609         for (i = 0; i < 16; i++)
 610                 if ((mask0 & (1 << i)) && (pd6729_check_irq(i) == 0))
 611                         mask |= (1 << i);
 612
 613         printk(KERN_INFO "pd6729: ISA irqs = ");
 614         for (i = 0; i < 16; i++)
 615                 if (mask & (1<<i))
 616                         printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
 617
 618         if (mask == 0)
 619                 printk("none!");
 620         else
 621                 printk("  polling status changes.\n");
 622
 623         return mask;
 624 }
 625
 626 static int __devinit pd6729_pci_probe(struct pci_dev *dev,
 627                                       const struct pci_device_id *id)
 628 {
 629         int i, j, ret;
 630         u_int mask;
 631         char configbyte;
 632         struct pd6729_socket *socket;
 633
 634         socket = kzalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS,
 635                          GFP_KERNEL);
 636         if (!socket) {
 637                 dev_warn(&dev->dev, "failed to kzalloc socket.\n");
 638                 return -ENOMEM;
 639         }
 640
 641         ret = pci_enable_device(dev);
 642         if (ret) {
 643                 dev_warn(&dev->dev, "failed to enable pci_device.\n");
 644                 goto err_out_free_mem;
 645         }
 646
 647         if (!pci_resource_start(dev, 0)) {
 648                 dev_warn(&dev->dev, "refusing to load the driver as the "
 649                         "io_base is NULL.\n");
 650                 goto err_out_free_mem;
 651         }
 652
 653         dev_info(&dev->dev, "Cirrus PD6729 PCI to PCMCIA Bridge at 0x%llx "
 654                 "on irq %d\n",
 655                 (unsigned long long)pci_resource_start(dev, 0), dev->irq);
 656         /*
 657          * Since we have no memory BARs some firmware may not
 658          * have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
 659          */
 660         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
 661         if (!(configbyte & PCI_COMMAND_MEMORY)) {
 662                 dev_dbg(&dev->dev, "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
 663                 configbyte |= PCI_COMMAND_MEMORY;
 664                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
 665         }
 666
 667         ret = pci_request_regions(dev, "pd6729");
 668         if (ret) {
 669                 dev_warn(&dev->dev, "pci request region failed.\n");
 670                 goto err_out_disable;
 671         }
 672
 673         if (dev->irq == NO_IRQ)
 674                 irq_mode = 0;   /* fall back to ISA interrupt mode */
 675
 676         mask = pd6729_isa_scan();
 677         if (irq_mode == 0 && mask == 0) {
 678                 dev_warn(&dev->dev, "no ISA interrupt is available.\n");
 679                 goto err_out_free_res;
 680         }
 681
 682         for (i = 0; i < MAX_SOCKETS; i++) {
 683                 socket[i].io_base = pci_resource_start(dev, 0);
 684                 socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
 685                 socket[i].socket.map_size = 0x1000;
 686                 socket[i].socket.irq_mask = mask;
 687                 socket[i].socket.pci_irq  = dev->irq;
 688                 socket[i].socket.cb_dev = dev;
 689                 socket[i].socket.owner = THIS_MODULE;
 690
 691                 socket[i].number = i;
 692
 693                 socket[i].socket.ops = &pd6729_operations;
 694                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 695                 socket[i].socket.dev.parent = &dev->dev;
 696                 socket[i].socket.driver_data = &socket[i];
 697         }
 698
 699         pci_set_drvdata(dev, socket);
 700         if (irq_mode == 1) {
 701                 /* Register the interrupt handler */
 702                 ret = request_irq(dev->irq, pd6729_interrupt, IRQF_SHARED,
 703                                   "pd6729", socket);
 704                 if (ret) {
 705                         dev_err(&dev->dev, "Failed to register irq %d\n",
 706                                 dev->irq);
 707                         goto err_out_free_res;
 708                 }
 709         } else {
 710                 /* poll Card status change */
 711                 init_timer(&socket->poll_timer);
 712                 socket->poll_timer.function = pd6729_interrupt_wrapper;
 713                 socket->poll_timer.data = (unsigned long)socket;
 714                 socket->poll_timer.expires = jiffies + HZ;
 715                 add_timer(&socket->poll_timer);
 716         }
 717
 718         for (i = 0; i < MAX_SOCKETS; i++) {
 719                 ret = pcmcia_register_socket(&socket[i].socket);
 720                 if (ret) {
 721                         dev_warn(&dev->dev, "pcmcia_register_socket failed.\n");
 722                         for (j = 0; j < i ; j++)
 723                                 pcmcia_unregister_socket(&socket[j].socket);
 724                         goto err_out_free_res2;
 725                 }
 726         }
 727
 728         return 0;
 729
 730  err_out_free_res2:
 731         if (irq_mode == 1)
 732                 free_irq(dev->irq, socket);
 733         else
 734                 del_timer_sync(&socket->poll_timer);
 735  err_out_free_res:
 736         pci_release_regions(dev);
 737  err_out_disable:
 738         pci_disable_device(dev);
 739
 740  err_out_free_mem:
 741         kfree(socket);
 742         return ret;
 743 }
 744
 745 static void __devexit pd6729_pci_remove(struct pci_dev *dev)
 746 {
 747         int i;
 748         struct pd6729_socket *socket = pci_get_drvdata(dev);
 749
 750         for (i = 0; i < MAX_SOCKETS; i++) {
 751                 /* Turn off all interrupt sources */
 752                 indirect_write(&socket[i], I365_CSCINT, 0);
 753                 indirect_write(&socket[i], I365_INTCTL, 0);
 754
 755                 pcmcia_unregister_socket(&socket[i].socket);
 756         }
 757
 758         if (irq_mode == 1)
 759                 free_irq(dev->irq, socket);
 760         else
 761                 del_timer_sync(&socket->poll_timer);
 762         pci_release_regions(dev);
 763         pci_disable_device(dev);
 764
 765         kfree(socket);
 766 }
 767
 768 static struct pci_device_id pd6729_pci_ids[] = {
 769         {
 770                 .vendor         = PCI_VENDOR_ID_CIRRUS,
 771                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
 772                 .subvendor      = PCI_ANY_ID,
 773                 .subdevice      = PCI_ANY_ID,
 774         },
 775         { }
 776 };
 777 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
 778
 779 static struct pci_driver pd6729_pci_driver = {
 780         .name           = "pd6729",
 781         .id_table       = pd6729_pci_ids,
 782         .probe          = pd6729_pci_probe,
 783         .remove         = __devexit_p(pd6729_pci_remove),
 784 };
 785
 786 static int pd6729_module_init(void)
 787 {
 788         return pci_register_driver(&pd6729_pci_driver);
 789 }
 790
 791 static void pd6729_module_exit(void)
 792 {
 793         pci_unregister_driver(&pd6729_pci_driver);
 794 }
 795
 796 module_init(pd6729_module_init);
 797 module_exit(pd6729_module_exit);