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/version.h> 47 #include <pcmcia/cs_types.h> 48 #include <pcmcia/cs.h> 49 #include <pcmcia/cistpl.h> 50 #include <pcmcia/ciscode.h> 51 #include <pcmcia/ds.h> 52 #include <pcmcia/cisreg.h> 53 54 #include <net/bluetooth/bluetooth.h> 55 #include <net/bluetooth/hci_core.h> 56 57 58 59 /* ======================== Module parameters ======================== */ 60 61 62 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 63 MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1"); 64 MODULE_LICENSE("GPL"); 65 66 67 68 /* ======================== Local structures ======================== */ 69 70 71 typedef struct dtl1_info_t { 72 dev_link_t link; 73 dev_node_t node; 74 75 struct hci_dev *hdev; 76 77 spinlock_t lock; /* For serializing operations */ 78 79 unsigned long flowmask; /* HCI flow mask */ 80 int ri_latch; 81 82 struct sk_buff_head txq; 83 unsigned long tx_state; 84 85 unsigned long rx_state; 86 unsigned long rx_count; 87 struct sk_buff *rx_skb; 88 } dtl1_info_t; 89 90 91 static void dtl1_config(dev_link_t *link); 92 static void dtl1_release(dev_link_t *link); 93 static int dtl1_event(event_t event, int priority, event_callback_args_t *args); 94 95 static dev_info_t dev_info = "dtl1_cs"; 96 97 static dev_link_t *dtl1_attach(void); 98 static void dtl1_detach(dev_link_t *); 99 100 static dev_link_t *dev_list = NULL; 101 102 103 /* Transmit states */ 104 #define XMIT_SENDING 1 105 #define XMIT_WAKEUP 2 106 #define XMIT_WAITING 8 107 108 /* Receiver States */ 109 #define RECV_WAIT_NSH 0 110 #define RECV_WAIT_DATA 1 111 112 113 typedef struct { 114 u8 type; 115 u8 zero; 116 u16 len; 117 } __attribute__ ((packed)) nsh_t; /* Nokia Specific Header */ 118 119 #define NSHL 4 /* Nokia Specific Header Length */ 120 121 122 123 /* ======================== Interrupt handling ======================== */ 124 125 126 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) 127 { 128 int actual = 0; 129 130 /* Tx FIFO should be empty */ 131 if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) 132 return 0; 133 134 /* Fill FIFO with current frame */ 135 while ((fifo_size-- > 0) && (actual < len)) { 136 /* Transmit next byte */ 137 outb(buf[actual], iobase + UART_TX); 138 actual++; 139 } 140 141 return actual; 142 } 143 144 145 static void dtl1_write_wakeup(dtl1_info_t *info) 146 { 147 if (!info) { 148 BT_ERR("Unknown device"); 149 return; 150 } 151 152 if (test_bit(XMIT_WAITING, &(info->tx_state))) { 153 set_bit(XMIT_WAKEUP, &(info->tx_state)); 154 return; 155 } 156 157 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { 158 set_bit(XMIT_WAKEUP, &(info->tx_state)); 159 return; 160 } 161 162 do { 163 register unsigned int iobase = info->link.io.BasePort1; 164 register struct sk_buff *skb; 165 register int len; 166 167 clear_bit(XMIT_WAKEUP, &(info->tx_state)); 168 169 if (!(info->link.state & DEV_PRESENT)) 170 return; 171 172 if (!(skb = skb_dequeue(&(info->txq)))) 173 break; 174 175 /* Send frame */ 176 len = dtl1_write(iobase, 32, skb->data, skb->len); 177 178 if (len == skb->len) { 179 set_bit(XMIT_WAITING, &(info->tx_state)); 180 kfree_skb(skb); 181 } else { 182 skb_pull(skb, len); 183 skb_queue_head(&(info->txq), skb); 184 } 185 186 info->hdev->stat.byte_tx += len; 187 188 } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); 189 190 clear_bit(XMIT_SENDING, &(info->tx_state)); 191 } 192 193 194 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb) 195 { 196 u8 flowmask = *(u8 *)skb->data; 197 int i; 198 199 printk(KERN_INFO "Bluetooth: Nokia control data ="); 200 for (i = 0; i < skb->len; i++) { 201 printk(" %02x", skb->data[i]); 202 } 203 printk("\n"); 204 205 /* transition to active state */ 206 if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) { 207 clear_bit(XMIT_WAITING, &(info->tx_state)); 208 dtl1_write_wakeup(info); 209 } 210 211 info->flowmask = flowmask; 212 213 kfree_skb(skb); 214 } 215 216 217 static void dtl1_receive(dtl1_info_t *info) 218 { 219 unsigned int iobase; 220 nsh_t *nsh; 221 int boguscount = 0; 222 223 if (!info) { 224 BT_ERR("Unknown device"); 225 return; 226 } 227 228 iobase = info->link.io.BasePort1; 229 230 do { 231 info->hdev->stat.byte_rx++; 232 233 /* Allocate packet */ 234 if (info->rx_skb == NULL) 235 if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { 236 BT_ERR("Can't allocate mem for new packet"); 237 info->rx_state = RECV_WAIT_NSH; 238 info->rx_count = NSHL; 239 return; 240 } 241 242 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX); 243 nsh = (nsh_t *)info->rx_skb->data; 244 245 info->rx_count--; 246 247 if (info->rx_count == 0) { 248 249 switch (info->rx_state) { 250 case RECV_WAIT_NSH: 251 info->rx_state = RECV_WAIT_DATA; 252 info->rx_count = nsh->len + (nsh->len & 0x0001); 253 break; 254 case RECV_WAIT_DATA: 255 info->rx_skb->pkt_type = nsh->type; 256 257 /* remove PAD byte if it exists */ 258 if (nsh->len & 0x0001) { 259 info->rx_skb->tail--; 260 info->rx_skb->len--; 261 } 262 263 /* remove NSH */ 264 skb_pull(info->rx_skb, NSHL); 265 266 switch (info->rx_skb->pkt_type) { 267 case 0x80: 268 /* control data for the Nokia Card */ 269 dtl1_control(info, info->rx_skb); 270 break; 271 case 0x82: 272 case 0x83: 273 case 0x84: 274 /* send frame to the HCI layer */ 275 info->rx_skb->dev = (void *) info->hdev; 276 info->rx_skb->pkt_type &= 0x0f; 277 hci_recv_frame(info->rx_skb); 278 break; 279 default: 280 /* unknown packet */ 281 BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type); 282 kfree_skb(info->rx_skb); 283 break; 284 } 285 286 info->rx_state = RECV_WAIT_NSH; 287 info->rx_count = NSHL; 288 info->rx_skb = NULL; 289 break; 290 } 291 292 } 293 294 /* Make sure we don't stay here too long */ 295 if (boguscount++ > 32) 296 break; 297 298 } while (inb(iobase + UART_LSR) & UART_LSR_DR); 299 } 300 301 302 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs) 303 { 304 dtl1_info_t *info = dev_inst; 305 unsigned int iobase; 306 unsigned char msr; 307 int boguscount = 0; 308 int iir, lsr; 309 310 if (!info || !info->hdev) { 311 BT_ERR("Call of irq %d for unknown device", irq); 312 return IRQ_NONE; 313 } 314 315 iobase = info->link.io.BasePort1; 316 317 spin_lock(&(info->lock)); 318 319 iir = inb(iobase + UART_IIR) & UART_IIR_ID; 320 while (iir) { 321 322 /* Clear interrupt */ 323 lsr = inb(iobase + UART_LSR); 324 325 switch (iir) { 326 case UART_IIR_RLSI: 327 BT_ERR("RLSI"); 328 break; 329 case UART_IIR_RDI: 330 /* Receive interrupt */ 331 dtl1_receive(info); 332 break; 333 case UART_IIR_THRI: 334 if (lsr & UART_LSR_THRE) { 335 /* Transmitter ready for data */ 336 dtl1_write_wakeup(info); 337 } 338 break; 339 default: 340 BT_ERR("Unhandled IIR=%#x", iir); 341 break; 342 } 343 344 /* Make sure we don't stay here too long */ 345 if (boguscount++ > 100) 346 break; 347 348 iir = inb(iobase + UART_IIR) & UART_IIR_ID; 349 350 } 351 352 msr = inb(iobase + UART_MSR); 353 354 if (info->ri_latch ^ (msr & UART_MSR_RI)) { 355 info->ri_latch = msr & UART_MSR_RI; 356 clear_bit(XMIT_WAITING, &(info->tx_state)); 357 dtl1_write_wakeup(info); 358 } 359 360 spin_unlock(&(info->lock)); 361 362 return IRQ_HANDLED; 363 } 364 365 366 367 /* ======================== HCI interface ======================== */ 368 369 370 static int dtl1_hci_open(struct hci_dev *hdev) 371 { 372 set_bit(HCI_RUNNING, &(hdev->flags)); 373 374 return 0; 375 } 376 377 378 static int dtl1_hci_flush(struct hci_dev *hdev) 379 { 380 dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data); 381 382 /* Drop TX queue */ 383 skb_queue_purge(&(info->txq)); 384 385 return 0; 386 } 387 388 389 static int dtl1_hci_close(struct hci_dev *hdev) 390 { 391 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) 392 return 0; 393 394 dtl1_hci_flush(hdev); 395 396 return 0; 397 } 398 399 400 static int dtl1_hci_send_frame(struct sk_buff *skb) 401 { 402 dtl1_info_t *info; 403 struct hci_dev *hdev = (struct hci_dev *)(skb->dev); 404 struct sk_buff *s; 405 nsh_t nsh; 406 407 if (!hdev) { 408 BT_ERR("Frame for unknown HCI device (hdev=NULL)"); 409 return -ENODEV; 410 } 411 412 info = (dtl1_info_t *)(hdev->driver_data); 413 414 switch (skb->pkt_type) { 415 case HCI_COMMAND_PKT: 416 hdev->stat.cmd_tx++; 417 nsh.type = 0x81; 418 break; 419 case HCI_ACLDATA_PKT: 420 hdev->stat.acl_tx++; 421 nsh.type = 0x82; 422 break; 423 case HCI_SCODATA_PKT: 424 hdev->stat.sco_tx++; 425 nsh.type = 0x83; 426 break; 427 }; 428 429 nsh.zero = 0; 430 nsh.len = skb->len; 431 432 s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC); 433 skb_reserve(s, NSHL); 434 memcpy(skb_put(s, skb->len), skb->data, skb->len); 435 if (skb->len & 0x0001) 436 *skb_put(s, 1) = 0; /* PAD */ 437 438 /* Prepend skb with Nokia frame header and queue */ 439 memcpy(skb_push(s, NSHL), &nsh, NSHL); 440 skb_queue_tail(&(info->txq), s); 441 442 dtl1_write_wakeup(info); 443 444 kfree_skb(skb); 445 446 return 0; 447 } 448 449 450 static void dtl1_hci_destruct(struct hci_dev *hdev) 451 { 452 } 453 454 455 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) 456 { 457 return -ENOIOCTLCMD; 458 } 459 460 461 462 /* ======================== Card services HCI interaction ======================== */ 463 464 465 static int dtl1_open(dtl1_info_t *info) 466 { 467 unsigned long flags; 468 unsigned int iobase = info->link.io.BasePort1; 469 struct hci_dev *hdev; 470 471 spin_lock_init(&(info->lock)); 472 473 skb_queue_head_init(&(info->txq)); 474 475 info->rx_state = RECV_WAIT_NSH; 476 info->rx_count = NSHL; 477 info->rx_skb = NULL; 478 479 set_bit(XMIT_WAITING, &(info->tx_state)); 480 481 /* Initialize HCI device */ 482 hdev = hci_alloc_dev(); 483 if (!hdev) { 484 BT_ERR("Can't allocate HCI device"); 485 return -ENOMEM; 486 } 487 488 info->hdev = hdev; 489 490 hdev->type = HCI_PCCARD; 491 hdev->driver_data = info; 492 493 hdev->open = dtl1_hci_open; 494 hdev->close = dtl1_hci_close; 495 hdev->flush = dtl1_hci_flush; 496 hdev->send = dtl1_hci_send_frame; 497 hdev->destruct = dtl1_hci_destruct; 498 hdev->ioctl = dtl1_hci_ioctl; 499 500 hdev->owner = THIS_MODULE; 501 502 spin_lock_irqsave(&(info->lock), flags); 503 504 /* Reset UART */ 505 outb(0, iobase + UART_MCR); 506 507 /* Turn off interrupts */ 508 outb(0, iobase + UART_IER); 509 510 /* Initialize UART */ 511 outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */ 512 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR); 513 514 info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI; 515 516 /* Turn on interrupts */ 517 outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER); 518 519 spin_unlock_irqrestore(&(info->lock), flags); 520 521 /* Timeout before it is safe to send the first HCI packet */ 522 msleep(2000); 523 524 /* Register HCI device */ 525 if (hci_register_dev(hdev) < 0) { 526 BT_ERR("Can't register HCI device"); 527 info->hdev = NULL; 528 hci_free_dev(hdev); 529 return -ENODEV; 530 } 531 532 return 0; 533 } 534 535 536 static int dtl1_close(dtl1_info_t *info) 537 { 538 unsigned long flags; 539 unsigned int iobase = info->link.io.BasePort1; 540 struct hci_dev *hdev = info->hdev; 541 542 if (!hdev) 543 return -ENODEV; 544 545 dtl1_hci_close(hdev); 546 547 spin_lock_irqsave(&(info->lock), flags); 548 549 /* Reset UART */ 550 outb(0, iobase + UART_MCR); 551 552 /* Turn off interrupts */ 553 outb(0, iobase + UART_IER); 554 555 spin_unlock_irqrestore(&(info->lock), flags); 556 557 if (hci_unregister_dev(hdev) < 0) 558 BT_ERR("Can't unregister HCI device %s", hdev->name); 559 560 hci_free_dev(hdev); 561 562 return 0; 563 } 564 565 static dev_link_t *dtl1_attach(void) 566 { 567 dtl1_info_t *info; 568 client_reg_t client_reg; 569 dev_link_t *link; 570 int ret; 571 572 /* Create new info device */ 573 info = kmalloc(sizeof(*info), GFP_KERNEL); 574 if (!info) 575 return NULL; 576 memset(info, 0, sizeof(*info)); 577 578 link = &info->link; 579 link->priv = info; 580 581 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 582 link->io.NumPorts1 = 8; 583 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; 584 link->irq.IRQInfo1 = IRQ_LEVEL_ID; 585 586 link->irq.Handler = dtl1_interrupt; 587 link->irq.Instance = info; 588 589 link->conf.Attributes = CONF_ENABLE_IRQ; 590 link->conf.Vcc = 50; 591 link->conf.IntType = INT_MEMORY_AND_IO; 592 593 /* Register with Card Services */ 594 link->next = dev_list; 595 dev_list = link; 596 client_reg.dev_info = &dev_info; 597 client_reg.EventMask = 598 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | 599 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | 600 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; 601 client_reg.event_handler = &dtl1_event; 602 client_reg.Version = 0x0210; 603 client_reg.event_callback_args.client_data = link; 604 605 ret = pcmcia_register_client(&link->handle, &client_reg); 606 if (ret != CS_SUCCESS) { 607 cs_error(link->handle, RegisterClient, ret); 608 dtl1_detach(link); 609 return NULL; 610 } 611 612 return link; 613 } 614 615 616 static void dtl1_detach(dev_link_t *link) 617 { 618 dtl1_info_t *info = link->priv; 619 dev_link_t **linkp; 620 int ret; 621 622 /* Locate device structure */ 623 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) 624 if (*linkp == link) 625 break; 626 627 if (*linkp == NULL) 628 return; 629 630 if (link->state & DEV_CONFIG) 631 dtl1_release(link); 632 633 if (link->handle) { 634 ret = pcmcia_deregister_client(link->handle); 635 if (ret != CS_SUCCESS) 636 cs_error(link->handle, DeregisterClient, ret); 637 } 638 639 /* Unlink device structure, free bits */ 640 *linkp = link->next; 641 642 kfree(info); 643 } 644 645 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) 646 { 647 int i; 648 649 i = pcmcia_get_tuple_data(handle, tuple); 650 if (i != CS_SUCCESS) 651 return i; 652 653 return pcmcia_parse_tuple(handle, tuple, parse); 654 } 655 656 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) 657 { 658 if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS) 659 return CS_NO_MORE_ITEMS; 660 return get_tuple(handle, tuple, parse); 661 } 662 663 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) 664 { 665 if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS) 666 return CS_NO_MORE_ITEMS; 667 return get_tuple(handle, tuple, parse); 668 } 669 670 static void dtl1_config(dev_link_t *link) 671 { 672 client_handle_t handle = link->handle; 673 dtl1_info_t *info = link->priv; 674 tuple_t tuple; 675 u_short buf[256]; 676 cisparse_t parse; 677 cistpl_cftable_entry_t *cf = &parse.cftable_entry; 678 config_info_t config; 679 int i, last_ret, last_fn; 680 681 tuple.TupleData = (cisdata_t *)buf; 682 tuple.TupleOffset = 0; 683 tuple.TupleDataMax = 255; 684 tuple.Attributes = 0; 685 686 /* Get configuration register information */ 687 tuple.DesiredTuple = CISTPL_CONFIG; 688 last_ret = first_tuple(handle, &tuple, &parse); 689 if (last_ret != CS_SUCCESS) { 690 last_fn = ParseTuple; 691 goto cs_failed; 692 } 693 link->conf.ConfigBase = parse.config.base; 694 link->conf.Present = parse.config.rmask[0]; 695 696 /* Configure card */ 697 link->state |= DEV_CONFIG; 698 i = pcmcia_get_configuration_info(handle, &config); 699 link->conf.Vcc = config.Vcc; 700 701 tuple.TupleData = (cisdata_t *)buf; 702 tuple.TupleOffset = 0; 703 tuple.TupleDataMax = 255; 704 tuple.Attributes = 0; 705 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 706 707 /* Look for a generic full-sized window */ 708 link->io.NumPorts1 = 8; 709 i = first_tuple(handle, &tuple, &parse); 710 while (i != CS_NO_MORE_ITEMS) { 711 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) { 712 link->conf.ConfigIndex = cf->index; 713 link->io.BasePort1 = cf->io.win[0].base; 714 link->io.NumPorts1 = cf->io.win[0].len; /*yo */ 715 link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK; 716 i = pcmcia_request_io(link->handle, &link->io); 717 if (i == CS_SUCCESS) 718 break; 719 } 720 i = next_tuple(handle, &tuple, &parse); 721 } 722 723 if (i != CS_SUCCESS) { 724 cs_error(link->handle, RequestIO, i); 725 goto failed; 726 } 727 728 i = pcmcia_request_irq(link->handle, &link->irq); 729 if (i != CS_SUCCESS) { 730 cs_error(link->handle, RequestIRQ, i); 731 link->irq.AssignedIRQ = 0; 732 } 733 734 i = pcmcia_request_configuration(link->handle, &link->conf); 735 if (i != CS_SUCCESS) { 736 cs_error(link->handle, RequestConfiguration, i); 737 goto failed; 738 } 739 740 if (dtl1_open(info) != 0) 741 goto failed; 742 743 strcpy(info->node.dev_name, info->hdev->name); 744 link->dev = &info->node; 745 link->state &= ~DEV_CONFIG_PENDING; 746 747 return; 748 749 cs_failed: 750 cs_error(link->handle, last_fn, last_ret); 751 752 failed: 753 dtl1_release(link); 754 } 755 756 757 static void dtl1_release(dev_link_t *link) 758 { 759 dtl1_info_t *info = link->priv; 760 761 if (link->state & DEV_PRESENT) 762 dtl1_close(info); 763 764 link->dev = NULL; 765 766 pcmcia_release_configuration(link->handle); 767 pcmcia_release_io(link->handle, &link->io); 768 pcmcia_release_irq(link->handle, &link->irq); 769 770 link->state &= ~DEV_CONFIG; 771 } 772 773 774 static int dtl1_event(event_t event, int priority, event_callback_args_t *args) 775 { 776 dev_link_t *link = args->client_data; 777 dtl1_info_t *info = link->priv; 778 779 switch (event) { 780 case CS_EVENT_CARD_REMOVAL: 781 link->state &= ~DEV_PRESENT; 782 if (link->state & DEV_CONFIG) { 783 dtl1_close(info); 784 dtl1_release(link); 785 } 786 break; 787 case CS_EVENT_CARD_INSERTION: 788 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 789 dtl1_config(link); 790 break; 791 case CS_EVENT_PM_SUSPEND: 792 link->state |= DEV_SUSPEND; 793 /* Fall through... */ 794 case CS_EVENT_RESET_PHYSICAL: 795 if (link->state & DEV_CONFIG) 796 pcmcia_release_configuration(link->handle); 797 break; 798 case CS_EVENT_PM_RESUME: 799 link->state &= ~DEV_SUSPEND; 800 /* Fall through... */ 801 case CS_EVENT_CARD_RESET: 802 if (DEV_OK(link)) 803 pcmcia_request_configuration(link->handle, &link->conf); 804 break; 805 } 806 807 return 0; 808 } 809 810 static struct pcmcia_driver dtl1_driver = { 811 .owner = THIS_MODULE, 812 .drv = { 813 .name = "dtl1_cs", 814 }, 815 .attach = dtl1_attach, 816 .detach = dtl1_detach, 817 }; 818 819 static int __init init_dtl1_cs(void) 820 { 821 return pcmcia_register_driver(&dtl1_driver); 822 } 823 824 825 static void __exit exit_dtl1_cs(void) 826 { 827 pcmcia_unregister_driver(&dtl1_driver); 828 BUG_ON(dev_list != NULL); 829 } 830 831 module_init(init_dtl1_cs); 832 module_exit(exit_dtl1_cs); 833