git.oblomov.eu Git - linux-2.6/blob - 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@hh.iij4u.or.jp>
   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/sched.h>
  26 #include <linux/types.h>
  27 #include <linux/platform_device.h>
  28
  29 #include <asm/io.h>
  30
  31 #include <pcmcia/ss.h>
  32
  33 #include "i82365.h"
  34
  35 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
  36 MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
  37 MODULE_LICENSE("GPL");
  38
  39 #define CARD_MAX_SLOTS          2
  40 #define CARD_SLOTA              0
  41 #define CARD_SLOTB              1
  42 #define CARD_SLOTB_OFFSET       0x40
  43
  44 #define CARD_MEM_START          0x10000000
  45 #define CARD_MEM_END            0x13ffffff
  46 #define CARD_MAX_MEM_OFFSET     0x3ffffff
  47 #define CARD_MAX_MEM_SPEED      1000
  48
  49 #define CARD_CONTROLLER_INDEX   0x03e0
  50 #define CARD_CONTROLLER_DATA    0x03e1
  51  /* Power register */
  52   #define VPP_GET_VCC           0x01
  53   #define POWER_ENABLE          0x10
  54  #define CARD_VOLTAGE_SENSE     0x1f
  55   #define VCC_3VORXV_CAPABLE    0x00
  56   #define VCC_XV_ONLY           0x01
  57   #define VCC_3V_CAPABLE        0x02
  58   #define VCC_5V_ONLY           0x03
  59  #define CARD_VOLTAGE_SELECT    0x2f
  60   #define VCC_3V                0x01
  61   #define VCC_5V                0x00
  62   #define VCC_XV                0x02
  63   #define VCC_STATUS_3V         0x02
  64   #define VCC_STATUS_5V         0x01
  65   #define VCC_STATUS_XV         0x03
  66  #define GLOBAL_CONTROL         0x1e
  67   #define EXWRBK                0x04
  68   #define IRQPM_EN              0x08
  69   #define CLRPMIRQ              0x10
  70
  71 #define INTERRUPT_STATUS        0x05fa
  72  #define IRQ_A                  0x02
  73  #define IRQ_B                  0x04
  74
  75 #define CONFIGURATION1          0x05fe
  76  #define SLOTB_CONFIG           0xc000
  77  #define SLOTB_NONE             0x0000
  78  #define SLOTB_PCCARD           0x4000
  79  #define SLOTB_CF               0x8000
  80  #define SLOTB_FLASHROM         0xc000
  81
  82 #define CARD_CONTROLLER_START   CARD_CONTROLLER_INDEX
  83 #define CARD_CONTROLLER_END     CARD_CONTROLLER_DATA
  84
  85 #define IO_MAX_MAPS     2
  86 #define MEM_MAX_MAPS    5
  87
  88 typedef enum {
  89         SLOT_PROBE = 0,
  90         SLOT_NOPROBE_IO,
  91         SLOT_NOPROBE_MEM,
  92         SLOT_NOPROBE_ALL,
  93         SLOT_INITIALIZED,
  94 } vrc4171_slot_t;
  95
  96 typedef enum {
  97         SLOTB_IS_NONE,
  98         SLOTB_IS_PCCARD,
  99         SLOTB_IS_CF,
 100         SLOTB_IS_FLASHROM,
 101 } vrc4171_slotb_t;
 102
 103 typedef struct vrc4171_socket {
 104         vrc4171_slot_t slot;
 105         struct pcmcia_socket pcmcia_socket;
 106         char name[24];
 107         int csc_irq;
 108         int io_irq;
 109 } vrc4171_socket_t;
 110
 111 static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS];
 112 static vrc4171_slotb_t 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(vrc4171_slotb_t 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         vrc4171_socket_t *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
 250         return 0;
 251 }
 252
 253 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
 254 {
 255         unsigned int slot;
 256         uint8_t status, sense;
 257         u_int val = 0;
 258
 259         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
 260                 return -EINVAL;
 261
 262         slot = sock->sock;
 263
 264         status = exca_read_byte(slot, I365_STATUS);
 265         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 266                 if (status & I365_CS_STSCHG)
 267                         val |= SS_STSCHG;
 268         } else {
 269                 if (!(status & I365_CS_BVD1))
 270                         val |= SS_BATDEAD;
 271                 else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 272                         val |= SS_BATWARN;
 273         }
 274         if ((status & I365_CS_DETECT) == I365_CS_DETECT)
 275                 val |= SS_DETECT;
 276         if (status & I365_CS_WRPROT)
 277                 val |= SS_WRPROT;
 278         if (status & I365_CS_READY)
 279                 val |= SS_READY;
 280         if (status & I365_CS_POWERON)
 281                 val |= SS_POWERON;
 282
 283         sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
 284         switch (sense) {
 285         case VCC_3VORXV_CAPABLE:
 286                 val |= SS_3VCARD | SS_XVCARD;
 287                 break;
 288         case VCC_XV_ONLY:
 289                 val |= SS_XVCARD;
 290                 break;
 291         case VCC_3V_CAPABLE:
 292                 val |= SS_3VCARD;
 293                 break;
 294         default:
 295                 /* 5V only */
 296                 break;
 297         }
 298
 299         *value = val;
 300
 301         return 0;
 302 }
 303
 304 static inline uint8_t set_Vcc_value(u_char Vcc)
 305 {
 306         switch (Vcc) {
 307         case 33:
 308                 return VCC_3V;
 309         case 50:
 310                 return VCC_5V;
 311         }
 312
 313         /* Small voltage is chosen for safety. */
 314         return VCC_3V;
 315 }
 316
 317 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
 318 {
 319         vrc4171_socket_t *socket;
 320         unsigned int slot;
 321         uint8_t voltage, power, control, cscint;
 322
 323         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 324             (state->Vpp != state->Vcc && state->Vpp != 0) ||
 325             (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
 326                 return -EINVAL;
 327
 328         slot = sock->sock;
 329         socket = &vrc4171_sockets[slot];
 330
 331         spin_lock_irq(&sock->lock);
 332
 333         voltage = set_Vcc_value(state->Vcc);
 334         exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
 335
 336         power = POWER_ENABLE;
 337         if (state->Vpp == state->Vcc)
 338                 power |= VPP_GET_VCC;
 339         if (state->flags & SS_OUTPUT_ENA)
 340                 power |= I365_PWR_OUT;
 341         exca_write_byte(slot, I365_POWER, power);
 342
 343         control = 0;
 344         if (state->io_irq != 0)
 345                 control |= socket->io_irq;
 346         if (state->flags & SS_IOCARD)
 347                 control |= I365_PC_IOCARD;
 348         if (state->flags & SS_RESET)
 349                 control &= ~I365_PC_RESET;
 350         else
 351                 control |= I365_PC_RESET;
 352         exca_write_byte(slot, I365_INTCTL, control);
 353
 354         cscint = 0;
 355         exca_write_byte(slot, I365_CSCINT, cscint);
 356         exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
 357         if (state->csc_mask != 0)
 358                 cscint |= socket->csc_irq << 8;
 359         if (state->flags & SS_IOCARD) {
 360                 if (state->csc_mask & SS_STSCHG)
 361                         cscint |= I365_CSC_STSCHG;
 362         } else {
 363                 if (state->csc_mask & SS_BATDEAD)
 364                         cscint |= I365_CSC_BVD1;
 365                 if (state->csc_mask & SS_BATWARN)
 366                         cscint |= I365_CSC_BVD2;
 367         }
 368         if (state->csc_mask & SS_READY)
 369                 cscint |= I365_CSC_READY;
 370         if (state->csc_mask & SS_DETECT)
 371                 cscint |= I365_CSC_DETECT;
 372         exca_write_byte(slot, I365_CSCINT, cscint);
 373
 374         spin_unlock_irq(&sock->lock);
 375
 376         return 0;
 377 }
 378
 379 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
 380 {
 381         unsigned int slot;
 382         uint8_t ioctl, addrwin;
 383         u_char map;
 384
 385         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 386             io == NULL || io->map >= IO_MAX_MAPS ||
 387             io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
 388                 return -EINVAL;
 389
 390         slot = sock->sock;
 391         map = io->map;
 392
 393         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 394         if (addrwin & I365_ENA_IO(map)) {
 395                 addrwin &= ~I365_ENA_IO(map);
 396                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 397         }
 398
 399         exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
 400         exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
 401
 402         ioctl = 0;
 403         if (io->speed > 0)
 404                 ioctl |= I365_IOCTL_WAIT(map);
 405         if (io->flags & MAP_16BIT)
 406                 ioctl |= I365_IOCTL_16BIT(map);
 407         if (io->flags & MAP_AUTOSZ)
 408                 ioctl |= I365_IOCTL_IOCS16(map);
 409         if (io->flags & MAP_0WS)
 410                 ioctl |= I365_IOCTL_0WS(map);
 411         exca_write_byte(slot, I365_IOCTL, ioctl);
 412
 413         if (io->flags & MAP_ACTIVE) {
 414                 addrwin |= I365_ENA_IO(map);
 415                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 416         }
 417
 418         return 0;
 419 }
 420
 421 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
 422 {
 423         unsigned int slot;
 424         uint16_t start, stop, offset;
 425         uint8_t addrwin;
 426         u_char map;
 427
 428         if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
 429             mem == NULL || mem->map >= MEM_MAX_MAPS ||
 430             mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
 431             mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
 432             mem->res->start > mem->res->end ||
 433             mem->card_start > CARD_MAX_MEM_OFFSET ||
 434             mem->speed > CARD_MAX_MEM_SPEED)
 435                 return -EINVAL;
 436
 437         slot = sock->sock;
 438         map = mem->map;
 439
 440         addrwin = exca_read_byte(slot, I365_ADDRWIN);
 441         if (addrwin & I365_ENA_MEM(map)) {
 442                 addrwin &= ~I365_ENA_MEM(map);
 443                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 444         }
 445
 446         start = (mem->res->start >> 12) & 0x3fff;
 447         if (mem->flags & MAP_16BIT)
 448                 start |= I365_MEM_16BIT;
 449         exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
 450
 451         stop = (mem->res->end >> 12) & 0x3fff;
 452         switch (mem->speed) {
 453         case 0:
 454                 break;
 455         case 1:
 456                 stop |= I365_MEM_WS0;
 457                 break;
 458         case 2:
 459                 stop |= I365_MEM_WS1;
 460                 break;
 461         default:
 462                 stop |= I365_MEM_WS0 | I365_MEM_WS1;
 463                 break;
 464         }
 465         exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
 466
 467         offset = (mem->card_start >> 12) & 0x3fff;
 468         if (mem->flags & MAP_ATTRIB)
 469                 offset |= I365_MEM_REG;
 470         if (mem->flags & MAP_WRPROT)
 471                 offset |= I365_MEM_WRPROT;
 472         exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
 473
 474         if (mem->flags & MAP_ACTIVE) {
 475                 addrwin |= I365_ENA_MEM(map);
 476                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 477         }
 478
 479         return 0;
 480 }
 481
 482 static struct pccard_operations vrc4171_pccard_operations = {
 483         .init                   = pccard_init,
 484         .get_status             = pccard_get_status,
 485         .set_socket             = pccard_set_socket,
 486         .set_io_map             = pccard_set_io_map,
 487         .set_mem_map            = pccard_set_mem_map,
 488 };
 489
 490 static inline unsigned int get_events(int slot)
 491 {
 492         unsigned int events = 0;
 493         uint8_t status, csc;
 494
 495         status = exca_read_byte(slot, I365_STATUS);
 496         csc = exca_read_byte(slot, I365_CSC);
 497
 498         if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
 499                 if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
 500                         events |= SS_STSCHG;
 501         } else {
 502                 if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
 503                         if (!(status & I365_CS_BVD1))
 504                                 events |= SS_BATDEAD;
 505                         else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
 506                                 events |= SS_BATWARN;
 507                 }
 508         }
 509         if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
 510                 events |= SS_READY;
 511         if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
 512                 events |= SS_DETECT;
 513
 514         return events;
 515 }
 516
 517 static irqreturn_t pccard_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 518 {
 519         vrc4171_socket_t *socket;
 520         unsigned int events;
 521         irqreturn_t retval = IRQ_NONE;
 522         uint16_t status;
 523
 524         status = vrc4171_get_irq_status();
 525         if (status & IRQ_A) {
 526                 socket = &vrc4171_sockets[CARD_SLOTA];
 527                 if (socket->slot == SLOT_INITIALIZED) {
 528                         if (status & (1 << socket->csc_irq)) {
 529                                 events = get_events(CARD_SLOTA);
 530                                 if (events != 0) {
 531                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 532                                         retval = IRQ_HANDLED;
 533                                 }
 534                         }
 535                 }
 536         }
 537
 538         if (status & IRQ_B) {
 539                 socket = &vrc4171_sockets[CARD_SLOTB];
 540                 if (socket->slot == SLOT_INITIALIZED) {
 541                         if (status & (1 << socket->csc_irq)) {
 542                                 events = get_events(CARD_SLOTB);
 543                                 if (events != 0) {
 544                                         pcmcia_parse_events(&socket->pcmcia_socket, events);
 545                                         retval = IRQ_HANDLED;
 546                                 }
 547                         }
 548                 }
 549         }
 550
 551         return retval;
 552 }
 553
 554 static inline void reserve_using_irq(int slot)
 555 {
 556         unsigned int irq;
 557
 558         irq = exca_read_byte(slot, I365_INTCTL);
 559         irq &= 0x0f;
 560         vrc4171_irq_mask &= ~(1 << irq);
 561
 562         irq = exca_read_byte(slot, I365_CSCINT);
 563         irq = (irq & 0xf0) >> 4;
 564         vrc4171_irq_mask &= ~(1 << irq);
 565 }
 566
 567 static int __devinit vrc4171_add_sockets(void)
 568 {
 569         vrc4171_socket_t *socket;
 570         int slot, retval;
 571
 572         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 573                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 574                         continue;
 575
 576                 socket = &vrc4171_sockets[slot];
 577                 if (socket->slot != SLOT_PROBE) {
 578                         uint8_t addrwin;
 579
 580                         switch (socket->slot) {
 581                         case SLOT_NOPROBE_MEM:
 582                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 583                                 addrwin &= 0x1f;
 584                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 585                                 break;
 586                         case SLOT_NOPROBE_IO:
 587                                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
 588                                 addrwin &= 0xc0;
 589                                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
 590                                 break;
 591                         default:
 592                                 break;
 593                         }
 594
 595                         reserve_using_irq(slot);
 596                         continue;
 597                 }
 598
 599                 sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
 600                 socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev;
 601                 socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
 602                 socket->pcmcia_socket.owner = THIS_MODULE;
 603
 604                 retval = pcmcia_register_socket(&socket->pcmcia_socket);
 605                 if (retval < 0)
 606                         return retval;
 607
 608                 exca_write_byte(slot, I365_ADDRWIN, 0);
 609                 exca_write_byte(slot, GLOBAL_CONTROL, 0);
 610
 611                 socket->slot = SLOT_INITIALIZED;
 612         }
 613
 614         return 0;
 615 }
 616
 617 static void vrc4171_remove_sockets(void)
 618 {
 619         vrc4171_socket_t *socket;
 620         int slot;
 621
 622         for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
 623                 if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
 624                         continue;
 625
 626                 socket = &vrc4171_sockets[slot];
 627                 if (socket->slot == SLOT_INITIALIZED)
 628                         pcmcia_unregister_socket(&socket->pcmcia_socket);
 629
 630                 socket->slot = SLOT_PROBE;
 631         }
 632 }
 633
 634 static int __devinit vrc4171_card_setup(char *options)
 635 {
 636         if (options == NULL || *options == '\0')
 637                 return 0;
 638
 639         if (strncmp(options, "irq:", 4) == 0) {
 640                 int irq;
 641                 options += 4;
 642                 irq = simple_strtoul(options, &options, 0);
 643                 if (irq >= 0 && irq < NR_IRQS)
 644                         vrc4171_irq = irq;
 645
 646                 if (*options != ',')
 647                         return 0;
 648                 options++;
 649         }
 650
 651         if (strncmp(options, "slota:", 6) == 0) {
 652                 options += 6;
 653                 if (*options != '\0') {
 654                         if (strncmp(options, "memnoprobe", 10) == 0) {
 655                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
 656                                 options += 10;
 657                         } else if (strncmp(options, "ionoprobe", 9) == 0) {
 658                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
 659                                 options += 9;
 660                         } else if ( strncmp(options, "noprobe", 7) == 0) {
 661                                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
 662                                 options += 7;
 663                         }
 664
 665                         if (*options != ',')
 666                                 return 0;
 667                         options++;
 668                 } else
 669                         return 0;
 670
 671         }
 672
 673         if (strncmp(options, "slotb:", 6) == 0) {
 674                 options += 6;
 675                 if (*options != '\0') {
 676                         if (strncmp(options, "pccard", 6) == 0) {
 677                                 vrc4171_slotb = SLOTB_IS_PCCARD;
 678                                 options += 6;
 679                         } else if (strncmp(options, "cf", 2) == 0) {
 680                                 vrc4171_slotb = SLOTB_IS_CF;
 681                                 options += 2;
 682                         } else if (strncmp(options, "flashrom", 8) == 0) {
 683                                 vrc4171_slotb = SLOTB_IS_FLASHROM;
 684                                 options += 8;
 685                         } else if (strncmp(options, "none", 4) == 0) {
 686                                 vrc4171_slotb = SLOTB_IS_NONE;
 687                                 options += 4;
 688                         }
 689
 690                         if (*options != ',')
 691                                 return 0;
 692                         options++;
 693
 694                         if (strncmp(options, "memnoprobe", 10) == 0)
 695                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
 696                         if (strncmp(options, "ionoprobe", 9) == 0)
 697                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
 698                         if (strncmp(options, "noprobe", 7) == 0)
 699                                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
 700                 }
 701         }
 702
 703         return 0;
 704 }
 705
 706 __setup("vrc4171_card=", vrc4171_card_setup);
 707
 708 static struct device_driver vrc4171_card_driver = {
 709         .name           = vrc4171_card_name,
 710         .bus            = &platform_bus_type,
 711         .suspend        = pcmcia_socket_dev_suspend,
 712         .resume         = pcmcia_socket_dev_resume,
 713 };
 714
 715 static int __devinit vrc4171_card_init(void)
 716 {
 717         int retval;
 718
 719         retval = 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                 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, SA_SHIRQ,
 734                                      vrc4171_card_name, vrc4171_sockets);
 735
 736         if (retval < 0) {
 737                 vrc4171_remove_sockets();
 738                 platform_device_unregister(&vrc4171_card_device);
 739                 driver_unregister(&vrc4171_card_driver);
 740                 return retval;
 741         }
 742
 743         printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq);
 744
 745         return 0;
 746 }
 747
 748 static void __devexit vrc4171_card_exit(void)
 749 {
 750         free_irq(vrc4171_irq, vrc4171_sockets);
 751         vrc4171_remove_sockets();
 752         platform_device_unregister(&vrc4171_card_device);
 753         driver_unregister(&vrc4171_card_driver);
 754 }
 755
 756 module_init(vrc4171_card_init);
 757 module_exit(vrc4171_card_exit);