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 unsigned 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)
 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                                 dev_vdbg(&socket[i].socket.dev,
 217                                         "Card detected in socket %i!\n", i);
 218                         }
 219
 220                         if (indirect_read(&socket[i], I365_INTCTL)
 221                                                 & I365_PC_IOCARD) {
 222                                 /* For IO/CARDS, bit 0 means "read the card" */
 223                                 events |= (csc & I365_CSC_STSCHG)
 224                                                 ? SS_STSCHG : 0;
 225                         } else {
 226                                 /* Check for battery/ready events */
 227                                 events |= (csc & I365_CSC_BVD1)
 228                                                 ? SS_BATDEAD : 0;
 229                                 events |= (csc & I365_CSC_BVD2)
 230                                                 ? SS_BATWARN : 0;
 231                                 events |= (csc & I365_CSC_READY)
 232                                                 ? SS_READY : 0;
 233                         }
 234
 235                         if (events) {
 236                                 pcmcia_parse_events(&socket[i].socket, events);
 237                         }
 238                         active |= events;
 239                 }
 240
 241                 if (active == 0) /* no more events to handle */
 242                         break;
 243         }
 244         return IRQ_RETVAL(handled);
 245 }
 246
 247 /* socket functions */
 248
 249 static void pd6729_interrupt_wrapper(unsigned long data)
 250 {
 251         struct pd6729_socket *socket = (struct pd6729_socket *) data;
 252
 253         pd6729_interrupt(0, (void *)socket);
 254         mod_timer(&socket->poll_timer, jiffies + HZ);
 255 }
 256
 257 static int pd6729_get_status(struct pcmcia_socket *sock, u_int *value)
 258 {
 259         struct pd6729_socket *socket
 260                         = container_of(sock, struct pd6729_socket, socket);
 261         unsigned int status;
 262         unsigned int data;
 263         struct pd6729_socket *t;
 264
 265         /* Interface Status Register */
 266         status = indirect_read(socket, I365_STATUS);
 267         *value = 0;
 268
 269         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
 270                 *value |= SS_DETECT;
 271         }
 272
 273         /*
 274          * IO cards have a different meaning of bits 0,1
 275          * Also notice the inverse-logic on the bits
 276          */
 277         if (indirect_read(socket, I365_INTCTL) & I365_PC_IOCARD) {
 278                 /* IO card */
 279                 if (!(status & I365_CS_STSCHG))
 280                         *value |= SS_STSCHG;
 281         } else {
 282                 /* non I/O card */
 283                 if (!(status & I365_CS_BVD1))
 284                         *value |= SS_BATDEAD;
 285                 if (!(status & I365_CS_BVD2))
 286                         *value |= SS_BATWARN;
 287         }
 288
 289         if (status & I365_CS_WRPROT)
 290                 *value |= SS_WRPROT;    /* card is write protected */
 291
 292         if (status & I365_CS_READY)
 293                 *value |= SS_READY;     /* card is not busy */
 294
 295         if (status & I365_CS_POWERON)
 296                 *value |= SS_POWERON;   /* power is applied to the card */
 297
 298         t = (socket->number) ? socket : socket + 1;
 299         indirect_write(t, PD67_EXT_INDEX, PD67_EXTERN_DATA);
 300         data = indirect_read16(t, PD67_EXT_DATA);
 301         *value |= (data & PD67_EXD_VS1(socket->number)) ? 0 : SS_3VCARD;
 302
 303         return 0;
 304 }
 305
 306
 307 static int pd6729_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 308 {
 309         struct pd6729_socket *socket
 310                         = container_of(sock, struct pd6729_socket, socket);
 311         unsigned char reg, data;
 312
 313         /* First, set the global controller options */
 314         indirect_write(socket, I365_GBLCTL, 0x00);
 315         indirect_write(socket, I365_GENCTL, 0x00);
 316
 317         /* Values for the IGENC register */
 318         socket->card_irq = state->io_irq;
 319
 320         reg = 0;
 321         /* The reset bit has "inverse" logic */
 322         if (!(state->flags & SS_RESET))
 323                 reg |= I365_PC_RESET;
 324         if (state->flags & SS_IOCARD)
 325                 reg |= I365_PC_IOCARD;
 326
 327         /* IGENC, Interrupt and General Control Register */
 328         indirect_write(socket, I365_INTCTL, reg);
 329
 330         /* Power registers */
 331
 332         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
 333
 334         if (state->flags & SS_PWR_AUTO) {
 335                 dev_dbg(&sock->dev, "Auto power\n");
 336                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
 337         }
 338         if (state->flags & SS_OUTPUT_ENA) {
 339                 dev_dbg(&sock->dev, "Power Enabled\n");
 340                 reg |= I365_PWR_OUT;    /* enable power */
 341         }
 342
 343         switch (state->Vcc) {
 344         case 0:
 345                 break;
 346         case 33:
 347                 dev_dbg(&sock->dev,
 348                         "setting voltage to Vcc to 3.3V on socket %i\n",
 349                         socket->number);
 350                 reg |= I365_VCC_5V;
 351                 indirect_setbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 352                 break;
 353         case 50:
 354                 dev_dbg(&sock->dev,
 355                         "setting voltage to Vcc to 5V on socket %i\n",
 356                         socket->number);
 357                 reg |= I365_VCC_5V;
 358                 indirect_resetbit(socket, PD67_MISC_CTL_1, PD67_MC1_VCC_3V);
 359                 break;
 360         default:
 361                 dev_dbg(&sock->dev,
 362                         "pd6729_set_socket called with invalid VCC power "
 363                         "value: %i\n", state->Vcc);
 364                 return -EINVAL;
 365         }
 366
 367         switch (state->Vpp) {
 368         case 0:
 369                 dev_dbg(&sock->dev, "not setting Vpp on socket %i\n",
 370                         socket->number);
 371                 break;
 372         case 33:
 373         case 50:
 374                 dev_dbg(&sock->dev, "setting Vpp to Vcc for socket %i\n",
 375                         socket->number);
 376                 reg |= I365_VPP1_5V;
 377                 break;
 378         case 120:
 379                 dev_dbg(&sock->dev, "setting Vpp to 12.0\n");
 380                 reg |= I365_VPP1_12V;
 381                 break;
 382         default:
 383                 dev_dbg(&sock->dev, "pd6729: pd6729_set_socket called with "
 384                         "invalid VPP power value: %i\n", state->Vpp);
 385                 return -EINVAL;
 386         }
 387
 388         /* only write if changed */
 389         if (reg != indirect_read(socket, I365_POWER))
 390                 indirect_write(socket, I365_POWER, reg);
 391
 392         if (irq_mode == 1) {
 393                  /* all interrupts are to be done as PCI interrupts */
 394                 data = PD67_EC1_INV_MGMT_IRQ | PD67_EC1_INV_CARD_IRQ;
 395         } else
 396                 data = 0;
 397
 398         indirect_write(socket, PD67_EXT_INDEX, PD67_EXT_CTL_1);
 399         indirect_write(socket, PD67_EXT_DATA, data);
 400
 401         /* Enable specific interrupt events */
 402
 403         reg = 0x00;
 404         if (state->csc_mask & SS_DETECT) {
 405                 reg |= I365_CSC_DETECT;
 406         }
 407         if (state->flags & SS_IOCARD) {
 408                 if (state->csc_mask & SS_STSCHG)
 409                         reg |= I365_CSC_STSCHG;
 410         } else {
 411                 if (state->csc_mask & SS_BATDEAD)
 412                         reg |= I365_CSC_BVD1;
 413                 if (state->csc_mask & SS_BATWARN)
 414                         reg |= I365_CSC_BVD2;
 415                 if (state->csc_mask & SS_READY)
 416                         reg |= I365_CSC_READY;
 417         }
 418         if (irq_mode == 1)
 419                 reg |= 0x30;    /* management IRQ: PCI INTA# = "irq 3" */
 420         indirect_write(socket, I365_CSCINT, reg);
 421
 422         reg = indirect_read(socket, I365_INTCTL);
 423         if (irq_mode == 1)
 424                 reg |= 0x03;    /* card IRQ: PCI INTA# = "irq 3" */
 425         else
 426                 reg |= socket->card_irq;
 427         indirect_write(socket, I365_INTCTL, reg);
 428
 429         /* now clear the (probably bogus) pending stuff by doing a dummy read */
 430         (void)indirect_read(socket, I365_CSC);
 431
 432         return 0;
 433 }
 434
 435 static int pd6729_set_io_map(struct pcmcia_socket *sock,
 436                              struct pccard_io_map *io)
 437 {
 438         struct pd6729_socket *socket
 439                         = container_of(sock, struct pd6729_socket, socket);
 440         unsigned char map, ioctl;
 441
 442         map = io->map;
 443
 444         /* Check error conditions */
 445         if (map > 1) {
 446                 dev_dbg(&sock->dev, "pd6729_set_io_map with invalid map\n");
 447                 return -EINVAL;
 448         }
 449
 450         /* Turn off the window before changing anything */
 451         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_IO(map))
 452                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 453
 454         /* dev_dbg(&sock->dev, "set_io_map: Setting range to %x - %x\n",
 455            io->start, io->stop);*/
 456
 457         /* write the new values */
 458         indirect_write16(socket, I365_IO(map)+I365_W_START, io->start);
 459         indirect_write16(socket, I365_IO(map)+I365_W_STOP, io->stop);
 460
 461         ioctl = indirect_read(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
 462
 463         if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map);
 464         if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map);
 465         if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map);
 466
 467         indirect_write(socket, I365_IOCTL, ioctl);
 468
 469         /* Turn the window back on if needed */
 470         if (io->flags & MAP_ACTIVE)
 471                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_IO(map));
 472
 473         return 0;
 474 }
 475
 476 static int pd6729_set_mem_map(struct pcmcia_socket *sock,
 477                               struct pccard_mem_map *mem)
 478 {
 479         struct pd6729_socket *socket
 480                          = container_of(sock, struct pd6729_socket, socket);
 481         unsigned short base, i;
 482         unsigned char map;
 483
 484         map = mem->map;
 485         if (map > 4) {
 486                 dev_warn(&sock->dev, "invalid map requested\n");
 487                 return -EINVAL;
 488         }
 489
 490         if ((mem->res->start > mem->res->end) || (mem->speed > 1000)) {
 491                 dev_warn(&sock->dev, "invalid invalid address / speed\n");
 492                 return -EINVAL;
 493         }
 494
 495         /* Turn off the window before changing anything */
 496         if (indirect_read(socket, I365_ADDRWIN) & I365_ENA_MEM(map))
 497                 indirect_resetbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 498
 499         /* write the start address */
 500         base = I365_MEM(map);
 501         i = (mem->res->start >> 12) & 0x0fff;
 502         if (mem->flags & MAP_16BIT)
 503                 i |= I365_MEM_16BIT;
 504         if (mem->flags & MAP_0WS)
 505                 i |= I365_MEM_0WS;
 506         indirect_write16(socket, base + I365_W_START, i);
 507
 508         /* write the stop address */
 509
 510         i= (mem->res->end >> 12) & 0x0fff;
 511         switch (to_cycles(mem->speed)) {
 512         case 0:
 513                 break;
 514         case 1:
 515                 i |= I365_MEM_WS0;
 516                 break;
 517         case 2:
 518                 i |= I365_MEM_WS1;
 519                 break;
 520         default:
 521                 i |= I365_MEM_WS1 | I365_MEM_WS0;
 522                 break;
 523         }
 524
 525         indirect_write16(socket, base + I365_W_STOP, i);
 526
 527         /* Take care of high byte */
 528         indirect_write(socket, PD67_EXT_INDEX, PD67_MEM_PAGE(map));
 529         indirect_write(socket, PD67_EXT_DATA, mem->res->start >> 24);
 530
 531         /* card start */
 532
 533         i = ((mem->card_start - mem->res->start) >> 12) & 0x3fff;
 534         if (mem->flags & MAP_WRPROT)
 535                 i |= I365_MEM_WRPROT;
 536         if (mem->flags & MAP_ATTRIB) {
 537                 /* dev_dbg(&sock->dev, "requesting attribute memory for "
 538                    "socket %i\n", socket->number);*/
 539                 i |= I365_MEM_REG;
 540         } else {
 541                 /* dev_dbg(&sock->dev, "requesting normal memory for "
 542                    "socket %i\n", socket->number);*/
 543         }
 544         indirect_write16(socket, base + I365_W_OFF, i);
 545
 546         /* Enable the window if necessary */
 547         if (mem->flags & MAP_ACTIVE)
 548                 indirect_setbit(socket, I365_ADDRWIN, I365_ENA_MEM(map));
 549
 550         return 0;
 551 }
 552
 553 static int pd6729_init(struct pcmcia_socket *sock)
 554 {
 555         int i;
 556         struct resource res = { .end = 0x0fff };
 557         pccard_io_map io = { 0, 0, 0, 0, 1 };
 558         pccard_mem_map mem = { .res = &res, };
 559
 560         pd6729_set_socket(sock, &dead_socket);
 561         for (i = 0; i < 2; i++) {
 562                 io.map = i;
 563                 pd6729_set_io_map(sock, &io);
 564         }
 565         for (i = 0; i < 5; i++) {
 566                 mem.map = i;
 567                 pd6729_set_mem_map(sock, &mem);
 568         }
 569
 570         return 0;
 571 }
 572
 573
 574 /* the pccard structure and its functions */
 575 static struct pccard_operations pd6729_operations = {
 576         .init                   = pd6729_init,
 577         .get_status             = pd6729_get_status,
 578         .set_socket             = pd6729_set_socket,
 579         .set_io_map             = pd6729_set_io_map,
 580         .set_mem_map            = pd6729_set_mem_map,
 581 };
 582
 583 static irqreturn_t pd6729_test(int irq, void *dev)
 584 {
 585         pr_devel("-> hit on irq %d\n", irq);
 586         return IRQ_HANDLED;
 587 }
 588
 589 static int pd6729_check_irq(int irq)
 590 {
 591         if (request_irq(irq, pd6729_test, IRQF_PROBE_SHARED, "x", pd6729_test)
 592                 != 0) return -1;
 593         free_irq(irq, pd6729_test);
 594         return 0;
 595 }
 596
 597 static u_int __devinit pd6729_isa_scan(void)
 598 {
 599         u_int mask0, mask = 0;
 600         int i;
 601
 602         if (irq_mode == 1) {
 603                 printk(KERN_INFO "pd6729: PCI card interrupts, "
 604                                                 "PCI status changes\n");
 605                 return 0;
 606         }
 607
 608         if (irq_list_count == 0)
 609                 mask0 = 0xffff;
 610         else
 611                 for (i = mask0 = 0; i < irq_list_count; i++)
 612                         mask0 |= (1<<irq_list[i]);
 613
 614         mask0 &= PD67_MASK;
 615
 616         /* just find interrupts that aren't in use */
 617         for (i = 0; i < 16; i++)
 618                 if ((mask0 & (1 << i)) && (pd6729_check_irq(i) == 0))
 619                         mask |= (1 << i);
 620
 621         printk(KERN_INFO "pd6729: ISA irqs = ");
 622         for (i = 0; i < 16; i++)
 623                 if (mask & (1<<i))
 624                         printk("%s%d", ((mask & ((1<<i)-1)) ? "," : ""), i);
 625
 626         if (mask == 0) printk("none!");
 627
 628         printk("  polling status changes.\n");
 629
 630         return mask;
 631 }
 632
 633 static int __devinit pd6729_pci_probe(struct pci_dev *dev,
 634                                       const struct pci_device_id *id)
 635 {
 636         int i, j, ret;
 637         u_int mask;
 638         char configbyte;
 639         struct pd6729_socket *socket;
 640
 641         socket = kzalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS,
 642                          GFP_KERNEL);
 643         if (!socket)
 644                 return -ENOMEM;
 645
 646         if ((ret = pci_enable_device(dev)))
 647                 goto err_out_free_mem;
 648
 649         if (!pci_resource_start(dev, 0)) {
 650                 dev_warn(&dev->dev, "refusing to load the driver as the "
 651                         "io_base is NULL.\n");
 652                 goto err_out_free_mem;
 653         }
 654
 655         dev_info(&dev->dev, "Cirrus PD6729 PCI to PCMCIA Bridge at 0x%llx "
 656                 "on irq %d\n",
 657                 (unsigned long long)pci_resource_start(dev, 0), dev->irq);
 658         /*
 659          * Since we have no memory BARs some firmware may not
 660          * have had PCI_COMMAND_MEMORY enabled, yet the device needs it.
 661          */
 662         pci_read_config_byte(dev, PCI_COMMAND, &configbyte);
 663         if (!(configbyte & PCI_COMMAND_MEMORY)) {
 664                 dev_dbg(&dev->dev, "pd6729: Enabling PCI_COMMAND_MEMORY.\n");
 665                 configbyte |= PCI_COMMAND_MEMORY;
 666                 pci_write_config_byte(dev, PCI_COMMAND, configbyte);
 667         }
 668
 669         ret = pci_request_regions(dev, "pd6729");
 670         if (ret) {
 671                 dev_warn(&dev->dev, "pci request region failed.\n");
 672                 goto err_out_disable;
 673         }
 674
 675         if (dev->irq == NO_IRQ)
 676                 irq_mode = 0;   /* fall back to ISA interrupt mode */
 677
 678         mask = pd6729_isa_scan();
 679         if (irq_mode == 0 && mask == 0) {
 680                 dev_warn(&dev->dev, "no ISA interrupt is available.\n");
 681                 goto err_out_free_res;
 682         }
 683
 684         for (i = 0; i < MAX_SOCKETS; i++) {
 685                 socket[i].io_base = pci_resource_start(dev, 0);
 686                 socket[i].socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
 687                 socket[i].socket.map_size = 0x1000;
 688                 socket[i].socket.irq_mask = mask;
 689                 socket[i].socket.pci_irq  = dev->irq;
 690                 socket[i].socket.owner = THIS_MODULE;
 691
 692                 socket[i].number = i;
 693
 694                 socket[i].socket.ops = &pd6729_operations;
 695                 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 696                 socket[i].socket.dev.parent = &dev->dev;
 697                 socket[i].socket.driver_data = &socket[i];
 698         }
 699
 700         pci_set_drvdata(dev, socket);
 701         if (irq_mode == 1) {
 702                 /* Register the interrupt handler */
 703                 if ((ret = request_irq(dev->irq, pd6729_interrupt, IRQF_SHARED,
 704                                                         "pd6729", socket))) {
 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 #ifdef CONFIG_PM
 769 static int pd6729_socket_suspend(struct pci_dev *dev, pm_message_t state)
 770 {
 771         return pcmcia_socket_dev_suspend(&dev->dev);
 772 }
 773
 774 static int pd6729_socket_resume(struct pci_dev *dev)
 775 {
 776         return pcmcia_socket_dev_resume(&dev->dev);
 777 }
 778 #endif
 779
 780 static struct pci_device_id pd6729_pci_ids[] = {
 781         {
 782                 .vendor         = PCI_VENDOR_ID_CIRRUS,
 783                 .device         = PCI_DEVICE_ID_CIRRUS_6729,
 784                 .subvendor      = PCI_ANY_ID,
 785                 .subdevice      = PCI_ANY_ID,
 786         },
 787         { }
 788 };
 789 MODULE_DEVICE_TABLE(pci, pd6729_pci_ids);
 790
 791 static struct pci_driver pd6729_pci_driver = {
 792         .name           = "pd6729",
 793         .id_table       = pd6729_pci_ids,
 794         .probe          = pd6729_pci_probe,
 795         .remove         = __devexit_p(pd6729_pci_remove),
 796 #ifdef CONFIG_PM
 797         .suspend        = pd6729_socket_suspend,
 798         .resume         = pd6729_socket_resume,
 799 #endif
 800 };
 801
 802 static int pd6729_module_init(void)
 803 {
 804         return pci_register_driver(&pd6729_pci_driver);
 805 }
 806
 807 static void pd6729_module_exit(void)
 808 {
 809         pci_unregister_driver(&pd6729_pci_driver);
 810 }
 811
 812 module_init(pd6729_module_init);
 813 module_exit(pd6729_module_exit);