drivers/pcmcia/vrc4171_card.c

   1 /*
   2  * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
   3  *
   4  * Copyright (C) 2003-2005  Yoichi Yuasa <yuasa@linux-mips.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #include <linux/init.h>
  21 #include <linux/ioport.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/module.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/types.h>
  26 #include <linux/platform_device.h>
  27
  28 #include <asm/io.h>
  29
  30 #include <pcmcia/ss.h>
  31
  32 #include "i82365.h"
  33
  34 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
  35 MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
  36 MODULE_LICENSE("GPL");
  37
  38 #define CARD_MAX_SLOTS          2
  39 #define CARD_SLOTA              0
  40 #define CARD_SLOTB              1
  41 #define CARD_SLOTB_OFFSET       0x40
  42
  43 #define CARD_MEM_START          0x10000000
  44 #define CARD_MEM_END            0x13ffffff
  45 #define CARD_MAX_MEM_OFFSET     0x3ffffff
  46 #define CARD_MAX_MEM_SPEED      1000
  47
  48 #define CARD_CONTROLLER_INDEX   0x03e0
  49 #define CARD_CONTROLLER_DATA    0x03e1
  50  /* Power register */
  51   #define VPP_GET_VCC           0x01
  52   #define POWER_ENABLE          0x10
  53  #define CARD_VOLTAGE_SENSE     0x1f
  54   #define VCC_3VORXV_CAPABLE    0x00
  55   #define VCC_XV_ONLY           0x01
  56   #define VCC_3V_CAPABLE        0x02
  57   #define VCC_5V_ONLY           0x03
  58  #define CARD_VOLTAGE_SELECT    0x2f
  59   #define VCC_3V                0x01
  60   #define VCC_5V                0x00
  61   #define VCC_XV                0x02
  62   #define VCC_STATUS_3V         0x02
  63   #define VCC_STATUS_5V         0x01
  64   #define VCC_STATUS_XV         0x03
  65  #define GLOBAL_CONTROL         0x1e
  66   #define EXWRBK                0x04
  67   #define IRQPM_EN              0x08
  68   #define CLRPMIRQ              0x10
  69
  70 #define INTERRUPT_STATUS        0x05fa
  71  #define IRQ_A                  0x02
  72  #define IRQ_B                  0x04
  73
  74 #define CONFIGURATION1          0x05fe
  75  #define SLOTB_CONFIG           0xc000
  76  #define SLOTB_NONE             0x0000
  77  #define SLOTB_PCCARD           0x4000
  78  #define SLOTB_CF               0x8000
  79  #define SLOTB_FLASHROM         0xc000
  80
  81 #define CARD_CONTROLLER_START   CARD_CONTROLLER_INDEX
  82 #define CARD_CONTROLLER_END     CARD_CONTROLLER_DATA
  83
  84 #define IO_MAX_MAPS     2
  85 #define MEM_MAX_MAPS    5
  86
  87 enum vrc4171_slot {
  88         SLOT_PROBE = 0,
  89         SLOT_NOPROBE_IO,
  90         SLOT_NOPROBE_MEM,
  91         SLOT_NOPROBE_ALL,
  92         SLOT_INITIALIZED,
  93 };
  94
  95 enum vrc4171_slotb {
  96         SLOTB_IS_NONE,
  97         SLOTB_IS_PCCARD,
  98         SLOTB_IS_CF,
  99         SLOTB_IS_FLASHROM,
 100 };
 101
 102 struct vrc4171_socket {
 103         enum vrc4171_slot slot;
 104         struct pcmcia_socket pcmcia_socket;
 105         char name[24];
 106         int csc_irq;
 107         int io_irq;
 108         spinlock_t lock;
 109 };
 110
 111 static struct vrc4171_socket vrc4171_sockets[CARD_MAX_SLOTS];
 112 static enum vrc4171_slotb vrc4171_slotb = SLOTB_IS_NONE;
 113 static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
 114 static unsigned int vrc4171_irq;
 115 static uint16_t vrc4171_irq_mask = 0xdeb8;
 116
 117 static struct resource vrc4171_card_resource[3] = {
 118         {       .name           = vrc4171_card_name,
 119                 .start          = CARD_CONTROLLER_START,
 120                 .end            = CARD_CONTROLLER_END,
 121                 .flags          = IORESOURCE_IO,        },
 122         {       .name           = vrc4171_card_name,
 123                 .start          = INTERRUPT_STATUS,
 124                 .end            = INTERRUPT_STATUS,
 125                 .flags          = IORESOURCE_IO,        },
 126         {       .name           = vrc4171_card_name,
 127                 .start          = CONFIGURATION1,
 128                 .end            = CONFIGURATION1,
 129                 .flags          = IORESOURCE_IO,        },
 130 };
 131
 132 static struct platform_device vrc4171_card_device = {
 133         .name           = vrc4171_card_name,
 134         .id             = 0,
 135         .num_resources  = 3,
 136         .resource       = vrc4171_card_resource,
 137 };
 138
 139 static inline uint16_t vrc4171_get_irq_status(void)
 140 {
 141         return inw(INTERRUPT_STATUS);
 142 }
 143
 144 static inline void vrc4171_set_multifunction_pin(enum vrc4171_slotb config)
 145 {
 146         uint16_t config1;
 147
 148         config1 = inw(CONFIGURATION1);
 149         config1 &= ~SLOTB_CONFIG;
 150
 151         switch (config) {
 152         case SLOTB_IS_NONE:
 153                 config1 |= SLOTB_NONE;
 154                 break;
 155         case SLOTB_IS_PCCARD:
 156                 config1 |= SLOTB_PCCARD;
 157                 break;
 158         case SLOTB_IS_CF:
 159                 config1 |= SLOTB_CF;
 160                 break;
 161         case SLOTB_IS_FLASHROM:
 162                 config1 |= SLOTB_FLASHROM;
 163                 break;
 164         default:
 165                 break;
 166         }
 167
 168         outw(config1, CONFIGURATION1);
 169 }
 170
 171 static inline uint8_t exca_read_byte(int slot, uint8_t index)
 172 {
 173         if (slot == CARD_SLOTB)
 174                 index += CARD_SLOTB_OFFSET;
 175
 176         outb(index, CARD_CONTROLLER_INDEX);
 177         return inb(CARD_CONTROLLER_DATA);
 178 }
 179
 180 static inline uint16_t exca_read_word(int slot, uint8_t index)
 181 {
 182         uint16_t data;
 183
 184         if (slot == CARD_SLOTB)
 185                 index += CARD_SLOTB_OFFSET;
 186
 187         outb(index++, CARD_CONTROLLER_INDEX);
 188         data = inb(CARD_CONTROLLER_DATA);
 189
 190         outb(index, CARD_CONTROLLER_INDEX);
 191         data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
 192
 193         return data;
 194 }
 195
 196 static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
 197 {
 198         if (slot == CARD_SLOTB)
 199                 index += CARD_SLOTB_OFFSET;
 200
 201         outb(index, CARD_CONTROLLER_INDEX);
 202         outb(data, CARD_CONTROLLER_DATA);
 203
 204         return data;
 205 }
 206
 207 static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
 208 {
 209         if (slot == CARD_SLOTB)
 210                 index += CARD_SLOTB_OFFSET;
 211
 212         outb(index++, CARD_CONTROLLER_INDEX);
 213         outb(data, CARD_CONTROLLER_DATA);
 214
 215         outb(index, CARD_CONTROLLER_INDEX);
 216         outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
 217
 218         return data;
 219 }
 220
 221 static inline int search_nonuse_irq(void)
 222 {
 223         int i;
 224
 225         for (i = 0; i < 16; i++) {
 226                 if (vrc4171_irq_mask & (1 << i)) {
 227                         vrc4171_irq_mask &= ~(1 << i);
 228                         return i;
 229                 }
 230         }
 231
 232         return -1;
 233 }
 234
 235 static int pccard_init(struct pcmcia_socket *sock)
 236 {
 237         struct vrc4171_socket *socket;
 238         unsigned int slot;
 239
 240         sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
 241         sock->irq_mask = 0;
 242         sock->map_size = 0x1000;
 243         sock->pci_irq = vrc4171_irq;
 244
 245         slot = sock->sock;
 246         socket = &vrc4171_sockets[slot];
 247         socket->csc_irq = search_nonuse_irq();
 248         socket->io_irq = search_nonuse_irq();
 249         spin_lock_init(&socket->lock);
 250
 251         return 0;
 252 }
 253
 254 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
 255 {
 256         unsigned int slot;
 257         uint8_t status, sense;
 258         u_int val = 0;
 259
 260         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
 261                 return -EINVAL;
 262
 263         slot = sock->sock;
 264
 265         status = exca_read_byte(slot, I365_STATUS);
 266         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 267                 if (status & I365_CS_STSCHG)
 268                         val |= SS_STSCHG;
 269         } else {
 270                 if (!(status & I365_CS_BVD1))
 271                         val |= SS_BATDEAD;
 272                 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 273                         val |= SS_BATWARN;
 274         }
 275         if ((status & I365_CS_DETECT) == I365_CS_DETECT)
 276                 val |= SS_DETECT;
 277         if (status & I365_CS_WRPROT)
 278                 val |= SS_WRPROT;
 279         if (status & I365_CS_READY)
 280                 val |= SS_READY;
 281         if (status & I365_CS_POWERON)
 282                 val |= SS_POWERON;
 283
 284         sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
 285         switch (sense) {
 286         case VCC_3VORXV_CAPABLE:
 287                 val |= SS_3VCARD | SS_XVCARD;
 288                 break;
 289         case VCC_XV_ONLY:
 290                 val |= SS_XVCARD;
 291                 break;
 292         case VCC_3V_CAPABLE:
 293                 val |= SS_3VCARD;
 294                 break;
 295         default:
 296                 /* 5V only */
 297                 break;
 298         }
 299
 300         *value = val;
 301
 302         return 0;
 303 }
 304
 305 static inline uint8_t set_Vcc_value(u_char Vcc)
 306 {
 307         switch (Vcc) {
 308         case 33:
 309                 return VCC_3V;
 310         case 50:
 311                 return VCC_5V;
 312         }
 313
 314         /* Small voltage is chosen for safety. */
 315         return VCC_3V;
 316 }
 317
 318 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 319 {
 320         struct vrc4171_socket *socket;
 321         unsigned int slot;
 322         uint8_t voltage, power, control, cscint;
 323
 324         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 325             (state->Vpp != state->Vcc && state->Vpp != 0) ||
 326             (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
 327                 return -EINVAL;
 328
 329         slot = sock->sock;
 330         socket = &vrc4171_sockets[slot];
 331
 332         spin_lock_irq(&socket->lock);
 333
 334         voltage = set_Vcc_value(state->Vcc);
 335         exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
 336
 337         power = POWER_ENABLE;
 338         if (state->Vpp == state->Vcc)
 339                 power |= VPP_GET_VCC;
 340         if (state->flags & SS_OUTPUT_ENA)
 341                 power |= I365_PWR_OUT;
 342         exca_write_byte(slot, I365_POWER, power);
 343
 344         control = 0;
 345         if (state->io_irq != 0)
 346                 control |= socket->io_irq;
 347         if (state->flags & SS_IOCARD)
 348                 control |= I365_PC_IOCARD;
 349         if (state->flags & SS_RESET)
 350                 control &= ~I365_PC_RESET;
 351         else
 352                 control |= I365_PC_RESET;
 353         exca_write_byte(slot, I365_INTCTL, control);
 354
 355         cscint = 0;
 356         exca_write_byte(slot, I365_CSCINT, cscint);
 357         exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
 358         if (state->csc_mask != 0)
 359                 cscint |= socket->csc_irq << 8;
 360         if (state->flags & SS_IOCARD) {
 361                 if (state->csc_mask & SS_STSCHG)
 362                         cscint |= I365_CSC_STSCHG;
 363         } else {
 364                 if (state->csc_mask & SS_BATDEAD)
 365                         cscint |= I365_CSC_BVD1;
 366                 if (state->csc_mask & SS_BATWARN)
 367                         cscint |= I365_CSC_BVD2;
 368         }
 369         if (state->csc_mask & SS_READY)
 370                 cscint |= I365_CSC_READY;
 371         if (state->csc_mask & SS_DETECT)
 372                 cscint |= I365_CSC_DETECT;
 373         exca_write_byte(slot, I365_CSCINT, cscint);
 374
 375         spin_unlock_irq(&socket->lock);
 376
 377         return 0;
 378 }
 379
 380 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 381 {
 382         unsigned int slot;
 383         uint8_t ioctl, addrwin;
 384         u_char map;
 385
 386         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 387             io == NULL || io->map >= IO_MAX_MAPS ||
 388             io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
 389                 return -EINVAL;
 390
 391         slot = sock->sock;
 392         map = io->map;
 393
 394         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 395         if (addrwin & I365_ENA_IO(map)) {
 396                 addrwin &= ~I365_ENA_IO(map);
 397                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 398         }
 399
 400         exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
 401         exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
 402
 403         ioctl = 0;
 404         if (io->speed > 0)
 405                 ioctl |= I365_IOCTL_WAIT(map);
 406         if (io->flags & MAP_16BIT)
 407                 ioctl |= I365_IOCTL_16BIT(map);
 408         if (io->flags & MAP_AUTOSZ)
 409                 ioctl |= I365_IOCTL_IOCS16(map);
 410         if (io->flags & MAP_0WS)
 411                 ioctl |= I365_IOCTL_0WS(map);
 412         exca_write_byte(slot, I365_IOCTL, ioctl);
 413
 414         if (io->flags & MAP_ACTIVE) {
 415                 addrwin |= I365_ENA_IO(map);
 416                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 417         }
 418
 419         return 0;
 420 }
 421
 422 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 423 {
 424         unsigned int slot;
 425         uint16_t start, stop, offset;
 426         uint8_t addrwin;
 427         u_char map;
 428
 429         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 430             mem == NULL || mem->map >= MEM_MAX_MAPS ||
 431             mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
 432             mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
 433             mem->res->start > mem->res->end ||
 434             mem->card_start > CARD_MAX_MEM_OFFSET ||
 435             mem->speed > CARD_MAX_MEM_SPEED)
 436                 return -EINVAL;
 437
 438         slot = sock->sock;
 439         map = mem->map;
 440
 441         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 442         if (addrwin & I365_ENA_MEM(map)) {
 443                 addrwin &= ~I365_ENA_MEM(map);
 444                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 445         }
 446
 447         start = (mem->res->start >> 12) & 0x3fff;
 448         if (mem->flags & MAP_16BIT)
 449                 start |= I365_MEM_16BIT;
 450         exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
 451
 452         stop = (mem->res->end >> 12) & 0x3fff;
 453         switch (mem->speed) {
 454         case 0:
 455                 break;
 456         case 1:
 457                 stop |= I365_MEM_WS0;
 458                 break;
 459         case 2:
 460                 stop |= I365_MEM_WS1;
 461                 break;
 462         default:
 463                 stop |= I365_MEM_WS0 | I365_MEM_WS1;
 464                 break;
 465         }
 466         exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
 467
 468         offset = (mem->card_start >> 12) & 0x3fff;
 469         if (mem->flags & MAP_ATTRIB)
 470                 offset |= I365_MEM_REG;
 471         if (mem->flags & MAP_WRPROT)
 472                 offset |= I365_MEM_WRPROT;
 473         exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
 474
 475         if (mem->flags & MAP_ACTIVE) {
 476                 addrwin |= I365_ENA_MEM(map);
 477                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 478         }
 479
 480         return 0;
 481 }
 482
 483 static struct pccard_operations vrc4171_pccard_operations = {
 484         .init                   = pccard_init,
 485         .get_status             = pccard_get_status,
 486         .set_socket             = pccard_set_socket,
 487         .set_io_map             = pccard_set_io_map,
 488         .set_mem_map            = pccard_set_mem_map,
 489 };
 490
 491 static inline unsigned int get_events(int slot)
 492 {
 493         unsigned int events = 0;
 494         uint8_t status, csc;
 495
 496         status = exca_read_byte(slot, I365_STATUS);
 497         csc = exca_read_byte(slot, I365_CSC);
 498
 499         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 500                 if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
 501                         events |= SS_STSCHG;
 502         } else {
 503                 if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
 504                         if (!(status & I365_CS_BVD1))
 505                                 events |= SS_BATDEAD;
 506                         else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 507                                 events |= SS_BATWARN;
 508                 }
 509         }
 510         if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
 511                 events |= SS_READY;
 512         if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
 513                 events |= SS_DETECT;
 514
 515         return events;
 516 }
 517
 518 static irqreturn_t pccard_interrupt(int irq, void *dev_id)
 519 {
 520         struct vrc4171_socket *socket;
 521         unsigned int events;
 522         irqreturn_t retval = IRQ_NONE;
 523         uint16_t status;
 524
 525         status = vrc4171_get_irq_status();
 526         if (status & IRQ_A) {
 527                 socket = &vrc4171_sockets[CARD_SLOTA];
 528                 if (socket->slot == SLOT_INITIALIZED) {
 529                         if (status & (1 << socket->csc_irq)) {
 530                                 events = get_events(CARD_SLOTA);
 531                                 if (events != 0) {
 532                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 533                                         retval = IRQ_HANDLED;
 534                                 }
 535                         }
 536                 }
 537         }
 538
 539         if (status & IRQ_B) {
 540                 socket = &vrc4171_sockets[CARD_SLOTB];
 541                 if (socket->slot == SLOT_INITIALIZED) {
 542                         if (status & (1 << socket->csc_irq)) {
 543                                 events = get_events(CARD_SLOTB);
 544                                 if (events != 0) {
 545                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 546                                         retval = IRQ_HANDLED;
 547                                 }
 548                         }
 549                 }
 550         }
 551
 552         return retval;
 553 }
 554
 555 static inline void reserve_using_irq(int slot)
 556 {
 557         unsigned int irq;
 558
 559         irq = exca_read_byte(slot, I365_INTCTL);
 560         irq &= 0x0f;
 561         vrc4171_irq_mask &= ~(1 << irq);
 562
 563         irq = exca_read_byte(slot, I365_CSCINT);
 564         irq = (irq & 0xf0) >> 4;
 565         vrc4171_irq_mask &= ~(1 << irq);
 566 }
 567
 568 static int vrc4171_add_sockets(void)
 569 {
 570         struct vrc4171_socket *socket;
 571         int slot, retval;
 572
 573         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 574                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 575                         continue;
 576
 577                 socket = &vrc4171_sockets[slot];
 578                 if (socket->slot != SLOT_PROBE) {
 579                         uint8_t addrwin;
 580
 581                         switch (socket->slot) {
 582                         case SLOT_NOPROBE_MEM:
 583                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 584                                 addrwin &= 0x1f;
 585                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 586                                 break;
 587                         case SLOT_NOPROBE_IO:
 588                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 589                                 addrwin &= 0xc0;
 590                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 591                                 break;
 592                         default:
 593                                 break;
 594                         }
 595
 596                         reserve_using_irq(slot);
 597                         continue;
 598                 }
 599
 600                 sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
 601                 socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
 602                 socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
 603                 socket->pcmcia_socket.owner = THIS_MODULE;
 604
 605                 retval = pcmcia_register_socket(&socket->pcmcia_socket);
 606                 if (retval < 0)
 607                         return retval;
 608
 609                 exca_write_byte(slot, I365_ADDRWIN, 0);
 610                 exca_write_byte(slot, GLOBAL_CONTROL, 0);
 611
 612                 socket->slot = SLOT_INITIALIZED;
 613         }
 614
 615         return 0;
 616 }
 617
 618 static void vrc4171_remove_sockets(void)
 619 {
 620         struct vrc4171_socket *socket;
 621         int slot;
 622
 623         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 624                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 625                         continue;
 626
 627                 socket = &vrc4171_sockets[slot];
 628                 if (socket->slot == SLOT_INITIALIZED)
 629                         pcmcia_unregister_socket(&socket->pcmcia_socket);
 630
 631                 socket->slot = SLOT_PROBE;
 632         }
 633 }
 634
 635 static int vrc4171_card_setup(char *options)
 636 {
 637         if (options == NULL || *options == '\0')
 638                 return 1;
 639
 640         if (strncmp(options, "irq:", 4) == 0) {
 641                 int irq;
 642                 options += 4;
 643                 irq = simple_strtoul(options, &options, 0);
 644                 if (irq >= 0 && irq < nr_irqs)
 645                         vrc4171_irq = irq;
 646
 647                 if (*options != ',')
 648                         return 1;
 649                 options++;
 650         }
 651
 652         if (strncmp(options, "slota:", 6) == 0) {
 653                 options += 6;
 654                 if (*options != '\0') {
 655                         if (strncmp(options, "memnoprobe", 10) == 0) {
 656                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
 657                                 options += 10;
 658                         } else if (strncmp(options, "ionoprobe", 9) == 0) {
 659                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
 660                                 options += 9;
 661                         } else if ( strncmp(options, "noprobe", 7) == 0) {
 662                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
 663                                 options += 7;
 664                         }
 665
 666                         if (*options != ',')
 667                                 return 1;
 668                         options++;
 669                 } else
 670                         return 1;
 671
 672         }
 673
 674         if (strncmp(options, "slotb:", 6) == 0) {
 675                 options += 6;
 676                 if (*options != '\0') {
 677                         if (strncmp(options, "pccard", 6) == 0) {
 678                                 vrc4171_slotb = SLOTB_IS_PCCARD;
 679                                 options += 6;
 680                         } else if (strncmp(options, "cf", 2) == 0) {
 681                                 vrc4171_slotb = SLOTB_IS_CF;
 682                                 options += 2;
 683                         } else if (strncmp(options, "flashrom", 8) == 0) {
 684                                 vrc4171_slotb = SLOTB_IS_FLASHROM;
 685                                 options += 8;
 686                         } else if (strncmp(options, "none", 4) == 0) {
 687                                 vrc4171_slotb = SLOTB_IS_NONE;
 688                                 options += 4;
 689                         }
 690
 691                         if (*options != ',')
 692                                 return 1;
 693                         options++;
 694
 695                         if (strncmp(options, "memnoprobe", 10) == 0)
 696                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
 697                         if (strncmp(options, "ionoprobe", 9) == 0)
 698                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
 699                         if (strncmp(options, "noprobe", 7) == 0)
 700                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
 701                 }
 702         }
 703
 704         return 1;
 705 }
 706
 707 __setup("vrc4171_card=", vrc4171_card_setup);
 708
 709 static struct platform_driver vrc4171_card_driver = {
 710         .driver = {
 711                 .name           = vrc4171_card_name,
 712         },
 713 };
 714
 715 static int vrc4171_card_init(void)
 716 {
 717         int retval;
 718
 719         retval = platform_driver_register(&vrc4171_card_driver);
 720         if (retval < 0)
 721                 return retval;
 722
 723         retval = platform_device_register(&vrc4171_card_device);
 724         if (retval < 0) {
 725                 platform_driver_unregister(&vrc4171_card_driver);
 726                 return retval;
 727         }
 728
 729         vrc4171_set_multifunction_pin(vrc4171_slotb);
 730
 731         retval = vrc4171_add_sockets();
 732         if (retval == 0)
 733                 retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
 734                                      vrc4171_card_name, vrc4171_sockets);
 735
 736         if (retval < 0) {
 737                 vrc4171_remove_sockets();
 738                 platform_device_unregister(&vrc4171_card_device);
 739                 platform_driver_unregister(&vrc4171_card_driver);
 740                 return retval;
 741         }
 742
 743         printk(KERN_INFO "%s, connected to IRQ %d\n",
 744                 vrc4171_card_driver.driver.name, vrc4171_irq);
 745
 746         return 0;
 747 }
 748
 749 static void vrc4171_card_exit(void)
 750 {
 751         free_irq(vrc4171_irq, vrc4171_sockets);
 752         vrc4171_remove_sockets();
 753         platform_device_unregister(&vrc4171_card_device);
 754         platform_driver_unregister(&vrc4171_card_driver);
 755 }
 756
 757 module_init(vrc4171_card_init);
 758 module_exit(vrc4171_card_exit);