drivers/bluetooth/dtl1_cs.c

   1 /*
   2  *
   3  *  A driver for Nokia Connectivity Card DTL-1 devices
   4  *
   5  *  Copyright (C) 2001-2002  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License version 2 as
  10  *  published by the Free Software Foundation;
  11  *
  12  *  Software distributed under the License is distributed on an "AS
  13  *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  14  *  implied. See the License for the specific language governing
  15  *  rights and limitations under the License.
  16  *
  17  *  The initial developer of the original code is David A. Hinds
  18  *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  19  *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/sched.h>
  31 #include <linux/delay.h>
  32 #include <linux/errno.h>
  33 #include <linux/ptrace.h>
  34 #include <linux/ioport.h>
  35 #include <linux/spinlock.h>
  36 #include <linux/moduleparam.h>
  37
  38 #include <linux/skbuff.h>
  39 #include <linux/string.h>
  40 #include <linux/serial.h>
  41 #include <linux/serial_reg.h>
  42 #include <linux/bitops.h>
  43 #include <asm/system.h>
  44 #include <asm/io.h>
  45
  46 #include <pcmcia/cs_types.h>
  47 #include <pcmcia/cs.h>
  48 #include <pcmcia/cistpl.h>
  49 #include <pcmcia/ciscode.h>
  50 #include <pcmcia/ds.h>
  51 #include <pcmcia/cisreg.h>
  52
  53 #include <net/bluetooth/bluetooth.h>
  54 #include <net/bluetooth/hci_core.h>
  55
  56
  57
  58 /* ======================== Module parameters ======================== */
  59
  60
  61 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
  62 MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
  63 MODULE_LICENSE("GPL");
  64
  65
  66
  67 /* ======================== Local structures ======================== */
  68
  69
  70 typedef struct dtl1_info_t {
  71         dev_link_t link;
  72         dev_node_t node;
  73
  74         struct hci_dev *hdev;
  75
  76         spinlock_t lock;                /* For serializing operations */
  77
  78         unsigned long flowmask;         /* HCI flow mask */
  79         int ri_latch;
  80
  81         struct sk_buff_head txq;
  82         unsigned long tx_state;
  83
  84         unsigned long rx_state;
  85         unsigned long rx_count;
  86         struct sk_buff *rx_skb;
  87 } dtl1_info_t;
  88
  89
  90 static void dtl1_config(dev_link_t *link);
  91 static void dtl1_release(dev_link_t *link);
  92 static int dtl1_event(event_t event, int priority, event_callback_args_t *args);
  93
  94 static dev_info_t dev_info = "dtl1_cs";
  95
  96 static dev_link_t *dtl1_attach(void);
  97 static void dtl1_detach(struct pcmcia_device *p_dev);
  98
  99
 100 /* Transmit states  */
 101 #define XMIT_SENDING  1
 102 #define XMIT_WAKEUP   2
 103 #define XMIT_WAITING  8
 104
 105 /* Receiver States */
 106 #define RECV_WAIT_NSH   0
 107 #define RECV_WAIT_DATA  1
 108
 109
 110 typedef struct {
 111         u8 type;
 112         u8 zero;
 113         u16 len;
 114 } __attribute__ ((packed)) nsh_t;       /* Nokia Specific Header */
 115
 116 #define NSHL  4                         /* Nokia Specific Header Length */
 117
 118
 119
 120 /* ======================== Interrupt handling ======================== */
 121
 122
 123 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
 124 {
 125         int actual = 0;
 126
 127         /* Tx FIFO should be empty */
 128         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
 129                 return 0;
 130
 131         /* Fill FIFO with current frame */
 132         while ((fifo_size-- > 0) && (actual < len)) {
 133                 /* Transmit next byte */
 134                 outb(buf[actual], iobase + UART_TX);
 135                 actual++;
 136         }
 137
 138         return actual;
 139 }
 140
 141
 142 static void dtl1_write_wakeup(dtl1_info_t *info)
 143 {
 144         if (!info) {
 145                 BT_ERR("Unknown device");
 146                 return;
 147         }
 148
 149         if (test_bit(XMIT_WAITING, &(info->tx_state))) {
 150                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 151                 return;
 152         }
 153
 154         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
 155                 set_bit(XMIT_WAKEUP, &(info->tx_state));
 156                 return;
 157         }
 158
 159         do {
 160                 register unsigned int iobase = info->link.io.BasePort1;
 161                 register struct sk_buff *skb;
 162                 register int len;
 163
 164                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
 165
 166                 if (!(info->link.state & DEV_PRESENT))
 167                         return;
 168
 169                 if (!(skb = skb_dequeue(&(info->txq))))
 170                         break;
 171
 172                 /* Send frame */
 173                 len = dtl1_write(iobase, 32, skb->data, skb->len);
 174
 175                 if (len == skb->len) {
 176                         set_bit(XMIT_WAITING, &(info->tx_state));
 177                         kfree_skb(skb);
 178                 } else {
 179                         skb_pull(skb, len);
 180                         skb_queue_head(&(info->txq), skb);
 181                 }
 182
 183                 info->hdev->stat.byte_tx += len;
 184
 185         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
 186
 187         clear_bit(XMIT_SENDING, &(info->tx_state));
 188 }
 189
 190
 191 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
 192 {
 193         u8 flowmask = *(u8 *)skb->data;
 194         int i;
 195
 196         printk(KERN_INFO "Bluetooth: Nokia control data =");
 197         for (i = 0; i < skb->len; i++) {
 198                 printk(" %02x", skb->data[i]);
 199         }
 200         printk("\n");
 201
 202         /* transition to active state */
 203         if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
 204                 clear_bit(XMIT_WAITING, &(info->tx_state));
 205                 dtl1_write_wakeup(info);
 206         }
 207
 208         info->flowmask = flowmask;
 209
 210         kfree_skb(skb);
 211 }
 212
 213
 214 static void dtl1_receive(dtl1_info_t *info)
 215 {
 216         unsigned int iobase;
 217         nsh_t *nsh;
 218         int boguscount = 0;
 219
 220         if (!info) {
 221                 BT_ERR("Unknown device");
 222                 return;
 223         }
 224
 225         iobase = info->link.io.BasePort1;
 226
 227         do {
 228                 info->hdev->stat.byte_rx++;
 229
 230                 /* Allocate packet */
 231                 if (info->rx_skb == NULL)
 232                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
 233                                 BT_ERR("Can't allocate mem for new packet");
 234                                 info->rx_state = RECV_WAIT_NSH;
 235                                 info->rx_count = NSHL;
 236                                 return;
 237                         }
 238
 239                 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
 240                 nsh = (nsh_t *)info->rx_skb->data;
 241
 242                 info->rx_count--;
 243
 244                 if (info->rx_count == 0) {
 245
 246                         switch (info->rx_state) {
 247                         case RECV_WAIT_NSH:
 248                                 info->rx_state = RECV_WAIT_DATA;
 249                                 info->rx_count = nsh->len + (nsh->len & 0x0001);
 250                                 break;
 251                         case RECV_WAIT_DATA:
 252                                 bt_cb(info->rx_skb)->pkt_type = nsh->type;
 253
 254                                 /* remove PAD byte if it exists */
 255                                 if (nsh->len & 0x0001) {
 256                                         info->rx_skb->tail--;
 257                                         info->rx_skb->len--;
 258                                 }
 259
 260                                 /* remove NSH */
 261                                 skb_pull(info->rx_skb, NSHL);
 262
 263                                 switch (bt_cb(info->rx_skb)->pkt_type) {
 264                                 case 0x80:
 265                                         /* control data for the Nokia Card */
 266                                         dtl1_control(info, info->rx_skb);
 267                                         break;
 268                                 case 0x82:
 269                                 case 0x83:
 270                                 case 0x84:
 271                                         /* send frame to the HCI layer */
 272                                         info->rx_skb->dev = (void *) info->hdev;
 273                                         bt_cb(info->rx_skb)->pkt_type &= 0x0f;
 274                                         hci_recv_frame(info->rx_skb);
 275                                         break;
 276                                 default:
 277                                         /* unknown packet */
 278                                         BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
 279                                         kfree_skb(info->rx_skb);
 280                                         break;
 281                                 }
 282
 283                                 info->rx_state = RECV_WAIT_NSH;
 284                                 info->rx_count = NSHL;
 285                                 info->rx_skb = NULL;
 286                                 break;
 287                         }
 288
 289                 }
 290
 291                 /* Make sure we don't stay here too long */
 292                 if (boguscount++ > 32)
 293                         break;
 294
 295         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
 296 }
 297
 298
 299 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
 300 {
 301         dtl1_info_t *info = dev_inst;
 302         unsigned int iobase;
 303         unsigned char msr;
 304         int boguscount = 0;
 305         int iir, lsr;
 306
 307         if (!info || !info->hdev) {
 308                 BT_ERR("Call of irq %d for unknown device", irq);
 309                 return IRQ_NONE;
 310         }
 311
 312         iobase = info->link.io.BasePort1;
 313
 314         spin_lock(&(info->lock));
 315
 316         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 317         while (iir) {
 318
 319                 /* Clear interrupt */
 320                 lsr = inb(iobase + UART_LSR);
 321
 322                 switch (iir) {
 323                 case UART_IIR_RLSI:
 324                         BT_ERR("RLSI");
 325                         break;
 326                 case UART_IIR_RDI:
 327                         /* Receive interrupt */
 328                         dtl1_receive(info);
 329                         break;
 330                 case UART_IIR_THRI:
 331                         if (lsr & UART_LSR_THRE) {
 332                                 /* Transmitter ready for data */
 333                                 dtl1_write_wakeup(info);
 334                         }
 335                         break;
 336                 default:
 337                         BT_ERR("Unhandled IIR=%#x", iir);
 338                         break;
 339                 }
 340
 341                 /* Make sure we don't stay here too long */
 342                 if (boguscount++ > 100)
 343                         break;
 344
 345                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
 346
 347         }
 348
 349         msr = inb(iobase + UART_MSR);
 350
 351         if (info->ri_latch ^ (msr & UART_MSR_RI)) {
 352                 info->ri_latch = msr & UART_MSR_RI;
 353                 clear_bit(XMIT_WAITING, &(info->tx_state));
 354                 dtl1_write_wakeup(info);
 355         }
 356
 357         spin_unlock(&(info->lock));
 358
 359         return IRQ_HANDLED;
 360 }
 361
 362
 363
 364 /* ======================== HCI interface ======================== */
 365
 366
 367 static int dtl1_hci_open(struct hci_dev *hdev)
 368 {
 369         set_bit(HCI_RUNNING, &(hdev->flags));
 370
 371         return 0;
 372 }
 373
 374
 375 static int dtl1_hci_flush(struct hci_dev *hdev)
 376 {
 377         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
 378
 379         /* Drop TX queue */
 380         skb_queue_purge(&(info->txq));
 381
 382         return 0;
 383 }
 384
 385
 386 static int dtl1_hci_close(struct hci_dev *hdev)
 387 {
 388         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
 389                 return 0;
 390
 391         dtl1_hci_flush(hdev);
 392
 393         return 0;
 394 }
 395
 396
 397 static int dtl1_hci_send_frame(struct sk_buff *skb)
 398 {
 399         dtl1_info_t *info;
 400         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 401         struct sk_buff *s;
 402         nsh_t nsh;
 403
 404         if (!hdev) {
 405                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 406                 return -ENODEV;
 407         }
 408
 409         info = (dtl1_info_t *)(hdev->driver_data);
 410
 411         switch (bt_cb(skb)->pkt_type) {
 412         case HCI_COMMAND_PKT:
 413                 hdev->stat.cmd_tx++;
 414                 nsh.type = 0x81;
 415                 break;
 416         case HCI_ACLDATA_PKT:
 417                 hdev->stat.acl_tx++;
 418                 nsh.type = 0x82;
 419                 break;
 420         case HCI_SCODATA_PKT:
 421                 hdev->stat.sco_tx++;
 422                 nsh.type = 0x83;
 423                 break;
 424         };
 425
 426         nsh.zero = 0;
 427         nsh.len = skb->len;
 428
 429         s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
 430         skb_reserve(s, NSHL);
 431         memcpy(skb_put(s, skb->len), skb->data, skb->len);
 432         if (skb->len & 0x0001)
 433                 *skb_put(s, 1) = 0;     /* PAD */
 434
 435         /* Prepend skb with Nokia frame header and queue */
 436         memcpy(skb_push(s, NSHL), &nsh, NSHL);
 437         skb_queue_tail(&(info->txq), s);
 438
 439         dtl1_write_wakeup(info);
 440
 441         kfree_skb(skb);
 442
 443         return 0;
 444 }
 445
 446
 447 static void dtl1_hci_destruct(struct hci_dev *hdev)
 448 {
 449 }
 450
 451
 452 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
 453 {
 454         return -ENOIOCTLCMD;
 455 }
 456
 457
 458
 459 /* ======================== Card services HCI interaction ======================== */
 460
 461
 462 static int dtl1_open(dtl1_info_t *info)
 463 {
 464         unsigned long flags;
 465         unsigned int iobase = info->link.io.BasePort1;
 466         struct hci_dev *hdev;
 467
 468         spin_lock_init(&(info->lock));
 469
 470         skb_queue_head_init(&(info->txq));
 471
 472         info->rx_state = RECV_WAIT_NSH;
 473         info->rx_count = NSHL;
 474         info->rx_skb = NULL;
 475
 476         set_bit(XMIT_WAITING, &(info->tx_state));
 477
 478         /* Initialize HCI device */
 479         hdev = hci_alloc_dev();
 480         if (!hdev) {
 481                 BT_ERR("Can't allocate HCI device");
 482                 return -ENOMEM;
 483         }
 484
 485         info->hdev = hdev;
 486
 487         hdev->type = HCI_PCCARD;
 488         hdev->driver_data = info;
 489
 490         hdev->open     = dtl1_hci_open;
 491         hdev->close    = dtl1_hci_close;
 492         hdev->flush    = dtl1_hci_flush;
 493         hdev->send     = dtl1_hci_send_frame;
 494         hdev->destruct = dtl1_hci_destruct;
 495         hdev->ioctl    = dtl1_hci_ioctl;
 496
 497         hdev->owner = THIS_MODULE;
 498
 499         spin_lock_irqsave(&(info->lock), flags);
 500
 501         /* Reset UART */
 502         outb(0, iobase + UART_MCR);
 503
 504         /* Turn off interrupts */
 505         outb(0, iobase + UART_IER);
 506
 507         /* Initialize UART */
 508         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
 509         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
 510
 511         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
 512
 513         /* Turn on interrupts */
 514         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 515
 516         spin_unlock_irqrestore(&(info->lock), flags);
 517
 518         /* Timeout before it is safe to send the first HCI packet */
 519         msleep(2000);
 520
 521         /* Register HCI device */
 522         if (hci_register_dev(hdev) < 0) {
 523                 BT_ERR("Can't register HCI device");
 524                 info->hdev = NULL;
 525                 hci_free_dev(hdev);
 526                 return -ENODEV;
 527         }
 528
 529         return 0;
 530 }
 531
 532
 533 static int dtl1_close(dtl1_info_t *info)
 534 {
 535         unsigned long flags;
 536         unsigned int iobase = info->link.io.BasePort1;
 537         struct hci_dev *hdev = info->hdev;
 538
 539         if (!hdev)
 540                 return -ENODEV;
 541
 542         dtl1_hci_close(hdev);
 543
 544         spin_lock_irqsave(&(info->lock), flags);
 545
 546         /* Reset UART */
 547         outb(0, iobase + UART_MCR);
 548
 549         /* Turn off interrupts */
 550         outb(0, iobase + UART_IER);
 551
 552         spin_unlock_irqrestore(&(info->lock), flags);
 553
 554         if (hci_unregister_dev(hdev) < 0)
 555                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 556
 557         hci_free_dev(hdev);
 558
 559         return 0;
 560 }
 561
 562 static dev_link_t *dtl1_attach(void)
 563 {
 564         dtl1_info_t *info;
 565         client_reg_t client_reg;
 566         dev_link_t *link;
 567         int ret;
 568
 569         /* Create new info device */
 570         info = kzalloc(sizeof(*info), GFP_KERNEL);
 571         if (!info)
 572                 return NULL;
 573
 574         link = &info->link;
 575         link->priv = info;
 576
 577         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 578         link->io.NumPorts1 = 8;
 579         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 580         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 581
 582         link->irq.Handler = dtl1_interrupt;
 583         link->irq.Instance = info;
 584
 585         link->conf.Attributes = CONF_ENABLE_IRQ;
 586         link->conf.Vcc = 50;
 587         link->conf.IntType = INT_MEMORY_AND_IO;
 588
 589         /* Register with Card Services */
 590         link->next = NULL;
 591         client_reg.dev_info = &dev_info;
 592         client_reg.Version = 0x0210;
 593         client_reg.event_callback_args.client_data = link;
 594
 595         ret = pcmcia_register_client(&link->handle, &client_reg);
 596         if (ret != CS_SUCCESS) {
 597                 cs_error(link->handle, RegisterClient, ret);
 598                 dtl1_detach(link->handle);
 599                 return NULL;
 600         }
 601
 602         return link;
 603 }
 604
 605
 606 static void dtl1_detach(struct pcmcia_device *p_dev)
 607 {
 608         dev_link_t *link = dev_to_instance(p_dev);
 609         dtl1_info_t *info = link->priv;
 610
 611         if (link->state & DEV_CONFIG)
 612                 dtl1_release(link);
 613
 614         kfree(info);
 615 }
 616
 617 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 618 {
 619         int i;
 620
 621         i = pcmcia_get_tuple_data(handle, tuple);
 622         if (i != CS_SUCCESS)
 623                 return i;
 624
 625         return pcmcia_parse_tuple(handle, tuple, parse);
 626 }
 627
 628 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 629 {
 630         if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
 631                 return CS_NO_MORE_ITEMS;
 632         return get_tuple(handle, tuple, parse);
 633 }
 634
 635 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
 636 {
 637         if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
 638                 return CS_NO_MORE_ITEMS;
 639         return get_tuple(handle, tuple, parse);
 640 }
 641
 642 static void dtl1_config(dev_link_t *link)
 643 {
 644         client_handle_t handle = link->handle;
 645         dtl1_info_t *info = link->priv;
 646         tuple_t tuple;
 647         u_short buf[256];
 648         cisparse_t parse;
 649         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
 650         config_info_t config;
 651         int i, last_ret, last_fn;
 652
 653         tuple.TupleData = (cisdata_t *)buf;
 654         tuple.TupleOffset = 0;
 655         tuple.TupleDataMax = 255;
 656         tuple.Attributes = 0;
 657
 658         /* Get configuration register information */
 659         tuple.DesiredTuple = CISTPL_CONFIG;
 660         last_ret = first_tuple(handle, &tuple, &parse);
 661         if (last_ret != CS_SUCCESS) {
 662                 last_fn = ParseTuple;
 663                 goto cs_failed;
 664         }
 665         link->conf.ConfigBase = parse.config.base;
 666         link->conf.Present = parse.config.rmask[0];
 667
 668         /* Configure card */
 669         link->state |= DEV_CONFIG;
 670         i = pcmcia_get_configuration_info(handle, &config);
 671         link->conf.Vcc = config.Vcc;
 672
 673         tuple.TupleData = (cisdata_t *)buf;
 674         tuple.TupleOffset = 0;
 675         tuple.TupleDataMax = 255;
 676         tuple.Attributes = 0;
 677         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 678
 679         /* Look for a generic full-sized window */
 680         link->io.NumPorts1 = 8;
 681         i = first_tuple(handle, &tuple, &parse);
 682         while (i != CS_NO_MORE_ITEMS) {
 683                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
 684                         link->conf.ConfigIndex = cf->index;
 685                         link->io.BasePort1 = cf->io.win[0].base;
 686                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
 687                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
 688                         i = pcmcia_request_io(link->handle, &link->io);
 689                         if (i == CS_SUCCESS)
 690                                 break;
 691                 }
 692                 i = next_tuple(handle, &tuple, &parse);
 693         }
 694
 695         if (i != CS_SUCCESS) {
 696                 cs_error(link->handle, RequestIO, i);
 697                 goto failed;
 698         }
 699
 700         i = pcmcia_request_irq(link->handle, &link->irq);
 701         if (i != CS_SUCCESS) {
 702                 cs_error(link->handle, RequestIRQ, i);
 703                 link->irq.AssignedIRQ = 0;
 704         }
 705
 706         i = pcmcia_request_configuration(link->handle, &link->conf);
 707         if (i != CS_SUCCESS) {
 708                 cs_error(link->handle, RequestConfiguration, i);
 709                 goto failed;
 710         }
 711
 712         if (dtl1_open(info) != 0)
 713                 goto failed;
 714
 715         strcpy(info->node.dev_name, info->hdev->name);
 716         link->dev = &info->node;
 717         link->state &= ~DEV_CONFIG_PENDING;
 718
 719         return;
 720
 721 cs_failed:
 722         cs_error(link->handle, last_fn, last_ret);
 723
 724 failed:
 725         dtl1_release(link);
 726 }
 727
 728
 729 static void dtl1_release(dev_link_t *link)
 730 {
 731         dtl1_info_t *info = link->priv;
 732
 733         if (link->state & DEV_PRESENT)
 734                 dtl1_close(info);
 735
 736         link->dev = NULL;
 737
 738         pcmcia_release_configuration(link->handle);
 739         pcmcia_release_io(link->handle, &link->io);
 740         pcmcia_release_irq(link->handle, &link->irq);
 741
 742         link->state &= ~DEV_CONFIG;
 743 }
 744
 745 static int dtl1_suspend(struct pcmcia_device *dev)
 746 {
 747         dev_link_t *link = dev_to_instance(dev);
 748
 749         link->state |= DEV_SUSPEND;
 750         if (link->state & DEV_CONFIG)
 751                 pcmcia_release_configuration(link->handle);
 752
 753         return 0;
 754 }
 755
 756 static int dtl1_resume(struct pcmcia_device *dev)
 757 {
 758         dev_link_t *link = dev_to_instance(dev);
 759
 760         link->state &= ~DEV_SUSPEND;
 761         if (DEV_OK(link))
 762                 pcmcia_request_configuration(link->handle, &link->conf);
 763
 764         return 0;
 765 }
 766
 767 static int dtl1_event(event_t event, int priority, event_callback_args_t *args)
 768 {
 769         dev_link_t *link = args->client_data;
 770
 771         switch (event) {
 772         case CS_EVENT_CARD_INSERTION:
 773                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 774                 dtl1_config(link);
 775                 break;
 776         }
 777
 778         return 0;
 779 }
 780
 781 static struct pcmcia_device_id dtl1_ids[] = {
 782         PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
 783         PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
 784         PCMCIA_DEVICE_NULL
 785 };
 786 MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
 787
 788 static struct pcmcia_driver dtl1_driver = {
 789         .owner          = THIS_MODULE,
 790         .drv            = {
 791                 .name   = "dtl1_cs",
 792         },
 793         .attach         = dtl1_attach,
 794         .event          = dtl1_event,
 795         .remove         = dtl1_detach,
 796         .id_table       = dtl1_ids,
 797         .suspend        = dtl1_suspend,
 798         .resume         = dtl1_resume,
 799 };
 800
 801 static int __init init_dtl1_cs(void)
 802 {
 803         return pcmcia_register_driver(&dtl1_driver);
 804 }
 805
 806
 807 static void __exit exit_dtl1_cs(void)
 808 {
 809         pcmcia_unregister_driver(&dtl1_driver);
 810 }
 811
 812 module_init(init_dtl1_cs);
 813 module_exit(exit_dtl1_cs);