root/drivers/pcmcia/db1xxx_ss.c

DEFINITIONS

1. db1300_card_inserted
2. db1200_card_inserted
3. db1000_card_inserted
4. db1x_card_inserted
5. set_stschg
6. db1000_pcmcia_cdirq
7. db1000_pcmcia_stschgirq
8. db1200_pcmcia_cdirq
9. db1200_pcmcia_cdirq_fn
10. db1x_pcmcia_setup_irqs
11. db1x_pcmcia_free_irqs
12. db1x_pcmcia_configure
13. db1x_pcmcia_get_status
14. db1x_pcmcia_sock_init
15. db1x_pcmcia_sock_suspend
16. au1x00_pcmcia_set_io_map
17. au1x00_pcmcia_set_mem_map
18. db1x_pcmcia_socket_probe
19. db1x_pcmcia_socket_remove

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * PCMCIA socket code for the Alchemy Db1xxx/Pb1xxx boards.
   4  *
   5  * Copyright (c) 2009 Manuel Lauss <manuel.lauss@gmail.com>
   6  *
   7  */
   8 
   9 /* This is a fairly generic PCMCIA socket driver suitable for the
  10  * following Alchemy Development boards:
  11  *  Db1000, Db/Pb1500, Db/Pb1100, Db/Pb1550, Db/Pb1200, Db1300
  12  *
  13  * The Db1000 is used as a reference:  Per-socket card-, carddetect- and
  14  *  statuschange IRQs connected to SoC GPIOs, control and status register
  15  *  bits arranged in per-socket groups in an external PLD.  All boards
  16  *  listed here use this layout, including bit positions and meanings.
  17  *  Of course there are exceptions in later boards:
  18  *
  19  *      - Pb1100/Pb1500:  single socket only; voltage key bits VS are
  20  *                        at STATUS[5:4] (instead of STATUS[1:0]).
  21  *      - Au1200-based:   additional card-eject irqs, irqs not gpios!
  22  *      - Db1300:         Db1200-like, no pwr ctrl, single socket (#1).
  23  */
  24 
  25 #include <linux/delay.h>
  26 #include <linux/gpio.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/pm.h>
  29 #include <linux/module.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/resource.h>
  32 #include <linux/slab.h>
  33 #include <linux/spinlock.h>
  34 
  35 #include <pcmcia/ss.h>
  36 
  37 #include <asm/mach-au1x00/au1000.h>
  38 #include <asm/mach-db1x00/bcsr.h>
  39 
  40 #define MEM_MAP_SIZE    0x400000
  41 #define IO_MAP_SIZE     0x1000
  42 
  43 struct db1x_pcmcia_sock {
  44         struct pcmcia_socket    socket;
  45         int             nr;             /* socket number */
  46         void            *virt_io;
  47 
  48         phys_addr_t     phys_io;
  49         phys_addr_t     phys_attr;
  50         phys_addr_t     phys_mem;
  51 
  52         /* previous flags for set_socket() */
  53         unsigned int old_flags;
  54 
  55         /* interrupt sources: linux irq numbers! */
  56         int     insert_irq;     /* default carddetect irq */
  57         int     stschg_irq;     /* card-status-change irq */
  58         int     card_irq;       /* card irq */
  59         int     eject_irq;      /* db1200/pb1200 have these */
  60         int     insert_gpio;    /* db1000 carddetect gpio */
  61 
  62 #define BOARD_TYPE_DEFAULT      0       /* most boards */
  63 #define BOARD_TYPE_DB1200       1       /* IRQs aren't gpios */
  64 #define BOARD_TYPE_PB1100       2       /* VS bits slightly different */
  65 #define BOARD_TYPE_DB1300       3       /* no power control */
  66         int     board_type;
  67 };
  68 
  69 #define to_db1x_socket(x) container_of(x, struct db1x_pcmcia_sock, socket)
  70 
  71 static int db1300_card_inserted(struct db1x_pcmcia_sock *sock)
  72 {
  73         return bcsr_read(BCSR_SIGSTAT) & (1 << 8);
  74 }
  75 
  76 /* DB/PB1200: check CPLD SIGSTATUS register bit 10/12 */
  77 static int db1200_card_inserted(struct db1x_pcmcia_sock *sock)
  78 {
  79         unsigned short sigstat;
  80 
  81         sigstat = bcsr_read(BCSR_SIGSTAT);
  82         return sigstat & 1 << (8 + 2 * sock->nr);
  83 }
  84 
  85 /* carddetect gpio: low-active */
  86 static int db1000_card_inserted(struct db1x_pcmcia_sock *sock)
  87 {
  88         return !gpio_get_value(sock->insert_gpio);
  89 }
  90 
  91 static int db1x_card_inserted(struct db1x_pcmcia_sock *sock)
  92 {
  93         switch (sock->board_type) {
  94         case BOARD_TYPE_DB1200:
  95                 return db1200_card_inserted(sock);
  96         case BOARD_TYPE_DB1300:
  97                 return db1300_card_inserted(sock);
  98         default:
  99                 return db1000_card_inserted(sock);
 100         }
 101 }
 102 
 103 /* STSCHG tends to bounce heavily when cards are inserted/ejected.
 104  * To avoid this, the interrupt is normally disabled and only enabled
 105  * after reset to a card has been de-asserted.
 106  */
 107 static inline void set_stschg(struct db1x_pcmcia_sock *sock, int en)
 108 {
 109         if (sock->stschg_irq != -1) {
 110                 if (en)
 111                         enable_irq(sock->stschg_irq);
 112                 else
 113                         disable_irq(sock->stschg_irq);
 114         }
 115 }
 116 
 117 static irqreturn_t db1000_pcmcia_cdirq(int irq, void *data)
 118 {
 119         struct db1x_pcmcia_sock *sock = data;
 120 
 121         pcmcia_parse_events(&sock->socket, SS_DETECT);
 122 
 123         return IRQ_HANDLED;
 124 }
 125 
 126 static irqreturn_t db1000_pcmcia_stschgirq(int irq, void *data)
 127 {
 128         struct db1x_pcmcia_sock *sock = data;
 129 
 130         pcmcia_parse_events(&sock->socket, SS_STSCHG);
 131 
 132         return IRQ_HANDLED;
 133 }
 134 
 135 /* Db/Pb1200 have separate per-socket insertion and ejection
 136  * interrupts which stay asserted as long as the card is
 137  * inserted/missing.  The one which caused us to be called
 138  * needs to be disabled and the other one enabled.
 139  */
 140 static irqreturn_t db1200_pcmcia_cdirq(int irq, void *data)
 141 {
 142         disable_irq_nosync(irq);
 143         return IRQ_WAKE_THREAD;
 144 }
 145 
 146 static irqreturn_t db1200_pcmcia_cdirq_fn(int irq, void *data)
 147 {
 148         struct db1x_pcmcia_sock *sock = data;
 149 
 150         /* Wait a bit for the signals to stop bouncing. */
 151         msleep(100);
 152         if (irq == sock->insert_irq)
 153                 enable_irq(sock->eject_irq);
 154         else
 155                 enable_irq(sock->insert_irq);
 156 
 157         pcmcia_parse_events(&sock->socket, SS_DETECT);
 158 
 159         return IRQ_HANDLED;
 160 }
 161 
 162 static int db1x_pcmcia_setup_irqs(struct db1x_pcmcia_sock *sock)
 163 {
 164         int ret;
 165 
 166         if (sock->stschg_irq != -1) {
 167                 ret = request_irq(sock->stschg_irq, db1000_pcmcia_stschgirq,
 168                                   0, "pcmcia_stschg", sock);
 169                 if (ret)
 170                         return ret;
 171         }
 172 
 173         /* Db/Pb1200 have separate per-socket insertion and ejection
 174          * interrupts, which should show edge behaviour but don't.
 175          * So interrupts are disabled until both insertion and
 176          * ejection handler have been registered and the currently
 177          * active one disabled.
 178          */
 179         if ((sock->board_type == BOARD_TYPE_DB1200) ||
 180             (sock->board_type == BOARD_TYPE_DB1300)) {
 181                 ret = request_threaded_irq(sock->insert_irq, db1200_pcmcia_cdirq,
 182                         db1200_pcmcia_cdirq_fn, 0, "pcmcia_insert", sock);
 183                 if (ret)
 184                         goto out1;
 185 
 186                 ret = request_threaded_irq(sock->eject_irq, db1200_pcmcia_cdirq,
 187                         db1200_pcmcia_cdirq_fn, 0, "pcmcia_eject", sock);
 188                 if (ret) {
 189                         free_irq(sock->insert_irq, sock);
 190                         goto out1;
 191                 }
 192 
 193                 /* enable the currently silent one */
 194                 if (db1x_card_inserted(sock))
 195                         enable_irq(sock->eject_irq);
 196                 else
 197                         enable_irq(sock->insert_irq);
 198         } else {
 199                 /* all other (older) Db1x00 boards use a GPIO to show
 200                  * card detection status:  use both-edge triggers.
 201                  */
 202                 irq_set_irq_type(sock->insert_irq, IRQ_TYPE_EDGE_BOTH);
 203                 ret = request_irq(sock->insert_irq, db1000_pcmcia_cdirq,
 204                                   0, "pcmcia_carddetect", sock);
 205 
 206                 if (ret)
 207                         goto out1;
 208         }
 209 
 210         return 0;       /* all done */
 211 
 212 out1:
 213         if (sock->stschg_irq != -1)
 214                 free_irq(sock->stschg_irq, sock);
 215 
 216         return ret;
 217 }
 218 
 219 static void db1x_pcmcia_free_irqs(struct db1x_pcmcia_sock *sock)
 220 {
 221         if (sock->stschg_irq != -1)
 222                 free_irq(sock->stschg_irq, sock);
 223 
 224         free_irq(sock->insert_irq, sock);
 225         if (sock->eject_irq != -1)
 226                 free_irq(sock->eject_irq, sock);
 227 }
 228 
 229 /*
 230  * configure a PCMCIA socket on the Db1x00 series of boards (and
 231  * compatibles).
 232  *
 233  * 2 external registers are involved:
 234  *   pcmcia_status (offset 0x04): bits [0:1/2:3]: read card voltage id
 235  *   pcmcia_control(offset 0x10):
 236  *      bits[0:1] set vcc for card
 237  *      bits[2:3] set vpp for card
 238  *      bit 4:  enable data buffers
 239  *      bit 7:  reset# for card
 240  *      add 8 for second socket.
 241  */
 242 static int db1x_pcmcia_configure(struct pcmcia_socket *skt,
 243                                  struct socket_state_t *state)
 244 {
 245         struct db1x_pcmcia_sock *sock = to_db1x_socket(skt);
 246         unsigned short cr_clr, cr_set;
 247         unsigned int changed;
 248         int v, p, ret;
 249 
 250         /* card voltage setup */
 251         cr_clr = (0xf << (sock->nr * 8)); /* clear voltage settings */
 252         cr_set = 0;
 253         v = p = ret = 0;
 254 
 255         switch (state->Vcc) {
 256         case 50:
 257                 ++v;
 258                 /* fall through */
 259         case 33:
 260                 ++v;
 261                 /* fall through */
 262         case 0:
 263                 break;
 264         default:
 265                 printk(KERN_INFO "pcmcia%d unsupported Vcc %d\n",
 266                         sock->nr, state->Vcc);
 267         }
 268 
 269         switch (state->Vpp) {
 270         case 12:
 271                 ++p;
 272                 /* fall through */
 273         case 33:
 274         case 50:
 275                 ++p;
 276                 /* fall through */
 277         case 0:
 278                 break;
 279         default:
 280                 printk(KERN_INFO "pcmcia%d unsupported Vpp %d\n",
 281                         sock->nr, state->Vpp);
 282         }
 283 
 284         /* sanity check: Vpp must be 0, 12, or Vcc */
 285         if (((state->Vcc == 33) && (state->Vpp == 50)) ||
 286             ((state->Vcc == 50) && (state->Vpp == 33))) {
 287                 printk(KERN_INFO "pcmcia%d bad Vcc/Vpp combo (%d %d)\n",
 288                         sock->nr, state->Vcc, state->Vpp);
 289                 v = p = 0;
 290                 ret = -EINVAL;
 291         }
 292 
 293         /* create new voltage code */
 294         if (sock->board_type != BOARD_TYPE_DB1300)
 295                 cr_set |= ((v << 2) | p) << (sock->nr * 8);
 296 
 297         changed = state->flags ^ sock->old_flags;
 298 
 299         if (changed & SS_RESET) {
 300                 if (state->flags & SS_RESET) {
 301                         set_stschg(sock, 0);
 302                         /* assert reset, disable io buffers */
 303                         cr_clr |= (1 << (7 + (sock->nr * 8)));
 304                         cr_clr |= (1 << (4 + (sock->nr * 8)));
 305                 } else {
 306                         /* de-assert reset, enable io buffers */
 307                         cr_set |= 1 << (7 + (sock->nr * 8));
 308                         cr_set |= 1 << (4 + (sock->nr * 8));
 309                 }
 310         }
 311 
 312         /* update PCMCIA configuration */
 313         bcsr_mod(BCSR_PCMCIA, cr_clr, cr_set);
 314 
 315         sock->old_flags = state->flags;
 316 
 317         /* reset was taken away: give card time to initialize properly */
 318         if ((changed & SS_RESET) && !(state->flags & SS_RESET)) {
 319                 msleep(500);
 320                 set_stschg(sock, 1);
 321         }
 322 
 323         return ret;
 324 }
 325 
 326 /* VCC bits at [3:2]/[11:10] */
 327 #define GET_VCC(cr, socknr)             \
 328         ((((cr) >> 2) >> ((socknr) * 8)) & 3)
 329 
 330 /* VS bits at [0:1]/[3:2] */
 331 #define GET_VS(sr, socknr)              \
 332         (((sr) >> (2 * (socknr))) & 3)
 333 
 334 /* reset bits at [7]/[15] */
 335 #define GET_RESET(cr, socknr)           \
 336         ((cr) & (1 << (7 + (8 * (socknr)))))
 337 
 338 static int db1x_pcmcia_get_status(struct pcmcia_socket *skt,
 339                                   unsigned int *value)
 340 {
 341         struct db1x_pcmcia_sock *sock = to_db1x_socket(skt);
 342         unsigned short cr, sr;
 343         unsigned int status;
 344 
 345         status = db1x_card_inserted(sock) ? SS_DETECT : 0;
 346 
 347         cr = bcsr_read(BCSR_PCMCIA);
 348         sr = bcsr_read(BCSR_STATUS);
 349 
 350         /* PB1100/PB1500: voltage key bits are at [5:4] */
 351         if (sock->board_type == BOARD_TYPE_PB1100)
 352                 sr >>= 4;
 353 
 354         /* determine card type */
 355         switch (GET_VS(sr, sock->nr)) {
 356         case 0:
 357         case 2:
 358                 status |= SS_3VCARD;    /* 3V card */
 359         case 3:
 360                 break;                  /* 5V card: set nothing */
 361         default:
 362                 status |= SS_XVCARD;    /* treated as unsupported in core */
 363         }
 364 
 365         /* if Vcc is not zero, we have applied power to a card */
 366         status |= GET_VCC(cr, sock->nr) ? SS_POWERON : 0;
 367 
 368         /* DB1300: power always on, but don't tell when no card present */
 369         if ((sock->board_type == BOARD_TYPE_DB1300) && (status & SS_DETECT))
 370                 status = SS_POWERON | SS_3VCARD | SS_DETECT;
 371 
 372         /* reset de-asserted? then we're ready */
 373         status |= (GET_RESET(cr, sock->nr)) ? SS_READY : SS_RESET;
 374 
 375         *value = status;
 376 
 377         return 0;
 378 }
 379 
 380 static int db1x_pcmcia_sock_init(struct pcmcia_socket *skt)
 381 {
 382         return 0;
 383 }
 384 
 385 static int db1x_pcmcia_sock_suspend(struct pcmcia_socket *skt)
 386 {
 387         return 0;
 388 }
 389 
 390 static int au1x00_pcmcia_set_io_map(struct pcmcia_socket *skt,
 391                                     struct pccard_io_map *map)
 392 {
 393         struct db1x_pcmcia_sock *sock = to_db1x_socket(skt);
 394 
 395         map->start = (u32)sock->virt_io;
 396         map->stop = map->start + IO_MAP_SIZE;
 397 
 398         return 0;
 399 }
 400 
 401 static int au1x00_pcmcia_set_mem_map(struct pcmcia_socket *skt,
 402                                      struct pccard_mem_map *map)
 403 {
 404         struct db1x_pcmcia_sock *sock = to_db1x_socket(skt);
 405 
 406         if (map->flags & MAP_ATTRIB)
 407                 map->static_start = sock->phys_attr + map->card_start;
 408         else
 409                 map->static_start = sock->phys_mem + map->card_start;
 410 
 411         return 0;
 412 }
 413 
 414 static struct pccard_operations db1x_pcmcia_operations = {
 415         .init                   = db1x_pcmcia_sock_init,
 416         .suspend                = db1x_pcmcia_sock_suspend,
 417         .get_status             = db1x_pcmcia_get_status,
 418         .set_socket             = db1x_pcmcia_configure,
 419         .set_io_map             = au1x00_pcmcia_set_io_map,
 420         .set_mem_map            = au1x00_pcmcia_set_mem_map,
 421 };
 422 
 423 static int db1x_pcmcia_socket_probe(struct platform_device *pdev)
 424 {
 425         struct db1x_pcmcia_sock *sock;
 426         struct resource *r;
 427         int ret, bid;
 428 
 429         sock = kzalloc(sizeof(struct db1x_pcmcia_sock), GFP_KERNEL);
 430         if (!sock)
 431                 return -ENOMEM;
 432 
 433         sock->nr = pdev->id;
 434 
 435         bid = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
 436         switch (bid) {
 437         case BCSR_WHOAMI_PB1500:
 438         case BCSR_WHOAMI_PB1500R2:
 439         case BCSR_WHOAMI_PB1100:
 440                 sock->board_type = BOARD_TYPE_PB1100;
 441                 break;
 442         case BCSR_WHOAMI_DB1000 ... BCSR_WHOAMI_PB1550_SDR:
 443                 sock->board_type = BOARD_TYPE_DEFAULT;
 444                 break;
 445         case BCSR_WHOAMI_PB1200 ... BCSR_WHOAMI_DB1200:
 446                 sock->board_type = BOARD_TYPE_DB1200;
 447                 break;
 448         case BCSR_WHOAMI_DB1300:
 449                 sock->board_type = BOARD_TYPE_DB1300;
 450                 break;
 451         default:
 452                 printk(KERN_INFO "db1xxx-ss: unknown board %d!\n", bid);
 453                 ret = -ENODEV;
 454                 goto out0;
 455         };
 456 
 457         /*
 458          * gather resources necessary and optional nice-to-haves to
 459          * operate a socket:
 460          * This includes IRQs for Carddetection/ejection, the card
 461          *  itself and optional status change detection.
 462          * Also, the memory areas covered by a socket.  For these
 463          *  we require the real 36bit addresses (see the au1000.h
 464          *  header for more information).
 465          */
 466 
 467         /* card: irq assigned to the card itself. */
 468         r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "card");
 469         sock->card_irq = r ? r->start : 0;
 470 
 471         /* insert: irq which triggers on card insertion/ejection
 472          * BIG FAT NOTE: on DB1000/1100/1500/1550 we pass a GPIO here!
 473          */
 474         r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "insert");
 475         sock->insert_irq = r ? r->start : -1;
 476         if (sock->board_type == BOARD_TYPE_DEFAULT) {
 477                 sock->insert_gpio = r ? r->start : -1;
 478                 sock->insert_irq = r ? gpio_to_irq(r->start) : -1;
 479         }
 480 
 481         /* stschg: irq which trigger on card status change (optional) */
 482         r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "stschg");
 483         sock->stschg_irq = r ? r->start : -1;
 484 
 485         /* eject: irq which triggers on ejection (DB1200/PB1200 only) */
 486         r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "eject");
 487         sock->eject_irq = r ? r->start : -1;
 488 
 489         ret = -ENODEV;
 490 
 491         /* 36bit PCMCIA Attribute area address */
 492         r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-attr");
 493         if (!r) {
 494                 printk(KERN_ERR "pcmcia%d has no 'pseudo-attr' resource!\n",
 495                         sock->nr);
 496                 goto out0;
 497         }
 498         sock->phys_attr = r->start;
 499 
 500         /* 36bit PCMCIA Memory area address */
 501         r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-mem");
 502         if (!r) {
 503                 printk(KERN_ERR "pcmcia%d has no 'pseudo-mem' resource!\n",
 504                         sock->nr);
 505                 goto out0;
 506         }
 507         sock->phys_mem = r->start;
 508 
 509         /* 36bit PCMCIA IO area address */
 510         r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcmcia-io");
 511         if (!r) {
 512                 printk(KERN_ERR "pcmcia%d has no 'pseudo-io' resource!\n",
 513                         sock->nr);
 514                 goto out0;
 515         }
 516         sock->phys_io = r->start;
 517 
 518         /*
 519          * PCMCIA client drivers use the inb/outb macros to access
 520          * the IO registers.  Since mips_io_port_base is added
 521          * to the access address of the mips implementation of
 522          * inb/outb, we need to subtract it here because we want
 523          * to access the I/O or MEM address directly, without
 524          * going through this "mips_io_port_base" mechanism.
 525          */
 526         sock->virt_io = (void *)(ioremap(sock->phys_io, IO_MAP_SIZE) -
 527                                  mips_io_port_base);
 528 
 529         if (!sock->virt_io) {
 530                 printk(KERN_ERR "pcmcia%d: cannot remap IO area\n",
 531                         sock->nr);
 532                 ret = -ENOMEM;
 533                 goto out0;
 534         }
 535 
 536         sock->socket.ops        = &db1x_pcmcia_operations;
 537         sock->socket.owner      = THIS_MODULE;
 538         sock->socket.pci_irq    = sock->card_irq;
 539         sock->socket.features   = SS_CAP_STATIC_MAP | SS_CAP_PCCARD;
 540         sock->socket.map_size   = MEM_MAP_SIZE;
 541         sock->socket.io_offset  = (unsigned long)sock->virt_io;
 542         sock->socket.dev.parent = &pdev->dev;
 543         sock->socket.resource_ops = &pccard_static_ops;
 544 
 545         platform_set_drvdata(pdev, sock);
 546 
 547         ret = db1x_pcmcia_setup_irqs(sock);
 548         if (ret) {
 549                 printk(KERN_ERR "pcmcia%d cannot setup interrupts\n",
 550                         sock->nr);
 551                 goto out1;
 552         }
 553 
 554         set_stschg(sock, 0);
 555 
 556         ret = pcmcia_register_socket(&sock->socket);
 557         if (ret) {
 558                 printk(KERN_ERR "pcmcia%d failed to register\n", sock->nr);
 559                 goto out2;
 560         }
 561 
 562         printk(KERN_INFO "Alchemy Db/Pb1xxx pcmcia%d @ io/attr/mem %09llx"
 563                 "(%p) %09llx %09llx  card/insert/stschg/eject irqs @ %d "
 564                 "%d %d %d\n", sock->nr, sock->phys_io, sock->virt_io,
 565                 sock->phys_attr, sock->phys_mem, sock->card_irq,
 566                 sock->insert_irq, sock->stschg_irq, sock->eject_irq);
 567 
 568         return 0;
 569 
 570 out2:
 571         db1x_pcmcia_free_irqs(sock);
 572 out1:
 573         iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
 574 out0:
 575         kfree(sock);
 576         return ret;
 577 }
 578 
 579 static int db1x_pcmcia_socket_remove(struct platform_device *pdev)
 580 {
 581         struct db1x_pcmcia_sock *sock = platform_get_drvdata(pdev);
 582 
 583         db1x_pcmcia_free_irqs(sock);
 584         pcmcia_unregister_socket(&sock->socket);
 585         iounmap((void *)(sock->virt_io + (u32)mips_io_port_base));
 586         kfree(sock);
 587 
 588         return 0;
 589 }
 590 
 591 static struct platform_driver db1x_pcmcia_socket_driver = {
 592         .driver = {
 593                 .name   = "db1xxx_pcmcia",
 594         },
 595         .probe          = db1x_pcmcia_socket_probe,
 596         .remove         = db1x_pcmcia_socket_remove,
 597 };
 598 
 599 module_platform_driver(db1x_pcmcia_socket_driver);
 600 
 601 MODULE_LICENSE("GPL");
 602 MODULE_DESCRIPTION("PCMCIA Socket Services for Alchemy Db/Pb1x00 boards");
 603 MODULE_AUTHOR("Manuel Lauss");