[PATCH] pcmcia: new suspend core
[linux-2.6.git] / 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(dev_link_t *);
98
99 static dev_link_t *dev_list = NULL;
100
101
102 /* Transmit states  */
103 #define XMIT_SENDING  1
104 #define XMIT_WAKEUP   2
105 #define XMIT_WAITING  8
106
107 /* Receiver States */
108 #define RECV_WAIT_NSH   0
109 #define RECV_WAIT_DATA  1
110
111
112 typedef struct {
113         u8 type;
114         u8 zero;
115         u16 len;
116 } __attribute__ ((packed)) nsh_t;       /* Nokia Specific Header */
117
118 #define NSHL  4                         /* Nokia Specific Header Length */
119
120
121
122 /* ======================== Interrupt handling ======================== */
123
124
125 static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
126 {
127         int actual = 0;
128
129         /* Tx FIFO should be empty */
130         if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
131                 return 0;
132
133         /* Fill FIFO with current frame */
134         while ((fifo_size-- > 0) && (actual < len)) {
135                 /* Transmit next byte */
136                 outb(buf[actual], iobase + UART_TX);
137                 actual++;
138         }
139
140         return actual;
141 }
142
143
144 static void dtl1_write_wakeup(dtl1_info_t *info)
145 {
146         if (!info) {
147                 BT_ERR("Unknown device");
148                 return;
149         }
150
151         if (test_bit(XMIT_WAITING, &(info->tx_state))) {
152                 set_bit(XMIT_WAKEUP, &(info->tx_state));
153                 return;
154         }
155
156         if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
157                 set_bit(XMIT_WAKEUP, &(info->tx_state));
158                 return;
159         }
160
161         do {
162                 register unsigned int iobase = info->link.io.BasePort1;
163                 register struct sk_buff *skb;
164                 register int len;
165
166                 clear_bit(XMIT_WAKEUP, &(info->tx_state));
167
168                 if (!(info->link.state & DEV_PRESENT))
169                         return;
170
171                 if (!(skb = skb_dequeue(&(info->txq))))
172                         break;
173
174                 /* Send frame */
175                 len = dtl1_write(iobase, 32, skb->data, skb->len);
176
177                 if (len == skb->len) {
178                         set_bit(XMIT_WAITING, &(info->tx_state));
179                         kfree_skb(skb);
180                 } else {
181                         skb_pull(skb, len);
182                         skb_queue_head(&(info->txq), skb);
183                 }
184
185                 info->hdev->stat.byte_tx += len;
186
187         } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
188
189         clear_bit(XMIT_SENDING, &(info->tx_state));
190 }
191
192
193 static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
194 {
195         u8 flowmask = *(u8 *)skb->data;
196         int i;
197
198         printk(KERN_INFO "Bluetooth: Nokia control data =");
199         for (i = 0; i < skb->len; i++) {
200                 printk(" %02x", skb->data[i]);
201         }
202         printk("\n");
203
204         /* transition to active state */
205         if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
206                 clear_bit(XMIT_WAITING, &(info->tx_state));
207                 dtl1_write_wakeup(info);
208         }
209
210         info->flowmask = flowmask;
211
212         kfree_skb(skb);
213 }
214
215
216 static void dtl1_receive(dtl1_info_t *info)
217 {
218         unsigned int iobase;
219         nsh_t *nsh;
220         int boguscount = 0;
221
222         if (!info) {
223                 BT_ERR("Unknown device");
224                 return;
225         }
226
227         iobase = info->link.io.BasePort1;
228
229         do {
230                 info->hdev->stat.byte_rx++;
231
232                 /* Allocate packet */
233                 if (info->rx_skb == NULL)
234                         if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
235                                 BT_ERR("Can't allocate mem for new packet");
236                                 info->rx_state = RECV_WAIT_NSH;
237                                 info->rx_count = NSHL;
238                                 return;
239                         }
240
241                 *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
242                 nsh = (nsh_t *)info->rx_skb->data;
243
244                 info->rx_count--;
245
246                 if (info->rx_count == 0) {
247
248                         switch (info->rx_state) {
249                         case RECV_WAIT_NSH:
250                                 info->rx_state = RECV_WAIT_DATA;
251                                 info->rx_count = nsh->len + (nsh->len & 0x0001);
252                                 break;
253                         case RECV_WAIT_DATA:
254                                 bt_cb(info->rx_skb)->pkt_type = nsh->type;
255
256                                 /* remove PAD byte if it exists */
257                                 if (nsh->len & 0x0001) {
258                                         info->rx_skb->tail--;
259                                         info->rx_skb->len--;
260                                 }
261
262                                 /* remove NSH */
263                                 skb_pull(info->rx_skb, NSHL);
264
265                                 switch (bt_cb(info->rx_skb)->pkt_type) {
266                                 case 0x80:
267                                         /* control data for the Nokia Card */
268                                         dtl1_control(info, info->rx_skb);
269                                         break;
270                                 case 0x82:
271                                 case 0x83:
272                                 case 0x84:
273                                         /* send frame to the HCI layer */
274                                         info->rx_skb->dev = (void *) info->hdev;
275                                         bt_cb(info->rx_skb)->pkt_type &= 0x0f;
276                                         hci_recv_frame(info->rx_skb);
277                                         break;
278                                 default:
279                                         /* unknown packet */
280                                         BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
281                                         kfree_skb(info->rx_skb);
282                                         break;
283                                 }
284
285                                 info->rx_state = RECV_WAIT_NSH;
286                                 info->rx_count = NSHL;
287                                 info->rx_skb = NULL;
288                                 break;
289                         }
290
291                 }
292
293                 /* Make sure we don't stay here too long */
294                 if (boguscount++ > 32)
295                         break;
296
297         } while (inb(iobase + UART_LSR) & UART_LSR_DR);
298 }
299
300
301 static irqreturn_t dtl1_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
302 {
303         dtl1_info_t *info = dev_inst;
304         unsigned int iobase;
305         unsigned char msr;
306         int boguscount = 0;
307         int iir, lsr;
308
309         if (!info || !info->hdev) {
310                 BT_ERR("Call of irq %d for unknown device", irq);
311                 return IRQ_NONE;
312         }
313
314         iobase = info->link.io.BasePort1;
315
316         spin_lock(&(info->lock));
317
318         iir = inb(iobase + UART_IIR) & UART_IIR_ID;
319         while (iir) {
320
321                 /* Clear interrupt */
322                 lsr = inb(iobase + UART_LSR);
323
324                 switch (iir) {
325                 case UART_IIR_RLSI:
326                         BT_ERR("RLSI");
327                         break;
328                 case UART_IIR_RDI:
329                         /* Receive interrupt */
330                         dtl1_receive(info);
331                         break;
332                 case UART_IIR_THRI:
333                         if (lsr & UART_LSR_THRE) {
334                                 /* Transmitter ready for data */
335                                 dtl1_write_wakeup(info);
336                         }
337                         break;
338                 default:
339                         BT_ERR("Unhandled IIR=%#x", iir);
340                         break;
341                 }
342
343                 /* Make sure we don't stay here too long */
344                 if (boguscount++ > 100)
345                         break;
346
347                 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
348
349         }
350
351         msr = inb(iobase + UART_MSR);
352
353         if (info->ri_latch ^ (msr & UART_MSR_RI)) {
354                 info->ri_latch = msr & UART_MSR_RI;
355                 clear_bit(XMIT_WAITING, &(info->tx_state));
356                 dtl1_write_wakeup(info);
357         }
358
359         spin_unlock(&(info->lock));
360
361         return IRQ_HANDLED;
362 }
363
364
365
366 /* ======================== HCI interface ======================== */
367
368
369 static int dtl1_hci_open(struct hci_dev *hdev)
370 {
371         set_bit(HCI_RUNNING, &(hdev->flags));
372
373         return 0;
374 }
375
376
377 static int dtl1_hci_flush(struct hci_dev *hdev)
378 {
379         dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
380
381         /* Drop TX queue */
382         skb_queue_purge(&(info->txq));
383
384         return 0;
385 }
386
387
388 static int dtl1_hci_close(struct hci_dev *hdev)
389 {
390         if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
391                 return 0;
392
393         dtl1_hci_flush(hdev);
394
395         return 0;
396 }
397
398
399 static int dtl1_hci_send_frame(struct sk_buff *skb)
400 {
401         dtl1_info_t *info;
402         struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
403         struct sk_buff *s;
404         nsh_t nsh;
405
406         if (!hdev) {
407                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
408                 return -ENODEV;
409         }
410
411         info = (dtl1_info_t *)(hdev->driver_data);
412
413         switch (bt_cb(skb)->pkt_type) {
414         case HCI_COMMAND_PKT:
415                 hdev->stat.cmd_tx++;
416                 nsh.type = 0x81;
417                 break;
418         case HCI_ACLDATA_PKT:
419                 hdev->stat.acl_tx++;
420                 nsh.type = 0x82;
421                 break;
422         case HCI_SCODATA_PKT:
423                 hdev->stat.sco_tx++;
424                 nsh.type = 0x83;
425                 break;
426         };
427
428         nsh.zero = 0;
429         nsh.len = skb->len;
430
431         s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
432         skb_reserve(s, NSHL);
433         memcpy(skb_put(s, skb->len), skb->data, skb->len);
434         if (skb->len & 0x0001)
435                 *skb_put(s, 1) = 0;     /* PAD */
436
437         /* Prepend skb with Nokia frame header and queue */
438         memcpy(skb_push(s, NSHL), &nsh, NSHL);
439         skb_queue_tail(&(info->txq), s);
440
441         dtl1_write_wakeup(info);
442
443         kfree_skb(skb);
444
445         return 0;
446 }
447
448
449 static void dtl1_hci_destruct(struct hci_dev *hdev)
450 {
451 }
452
453
454 static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
455 {
456         return -ENOIOCTLCMD;
457 }
458
459
460
461 /* ======================== Card services HCI interaction ======================== */
462
463
464 static int dtl1_open(dtl1_info_t *info)
465 {
466         unsigned long flags;
467         unsigned int iobase = info->link.io.BasePort1;
468         struct hci_dev *hdev;
469
470         spin_lock_init(&(info->lock));
471
472         skb_queue_head_init(&(info->txq));
473
474         info->rx_state = RECV_WAIT_NSH;
475         info->rx_count = NSHL;
476         info->rx_skb = NULL;
477
478         set_bit(XMIT_WAITING, &(info->tx_state));
479
480         /* Initialize HCI device */
481         hdev = hci_alloc_dev();
482         if (!hdev) {
483                 BT_ERR("Can't allocate HCI device");
484                 return -ENOMEM;
485         }
486
487         info->hdev = hdev;
488
489         hdev->type = HCI_PCCARD;
490         hdev->driver_data = info;
491
492         hdev->open     = dtl1_hci_open;
493         hdev->close    = dtl1_hci_close;
494         hdev->flush    = dtl1_hci_flush;
495         hdev->send     = dtl1_hci_send_frame;
496         hdev->destruct = dtl1_hci_destruct;
497         hdev->ioctl    = dtl1_hci_ioctl;
498
499         hdev->owner = THIS_MODULE;
500
501         spin_lock_irqsave(&(info->lock), flags);
502
503         /* Reset UART */
504         outb(0, iobase + UART_MCR);
505
506         /* Turn off interrupts */
507         outb(0, iobase + UART_IER);
508
509         /* Initialize UART */
510         outb(UART_LCR_WLEN8, iobase + UART_LCR);        /* Reset DLAB */
511         outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
512
513         info->ri_latch = inb(info->link.io.BasePort1 + UART_MSR) & UART_MSR_RI;
514
515         /* Turn on interrupts */
516         outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
517
518         spin_unlock_irqrestore(&(info->lock), flags);
519
520         /* Timeout before it is safe to send the first HCI packet */
521         msleep(2000);
522
523         /* Register HCI device */
524         if (hci_register_dev(hdev) < 0) {
525                 BT_ERR("Can't register HCI device");
526                 info->hdev = NULL;
527                 hci_free_dev(hdev);
528                 return -ENODEV;
529         }
530
531         return 0;
532 }
533
534
535 static int dtl1_close(dtl1_info_t *info)
536 {
537         unsigned long flags;
538         unsigned int iobase = info->link.io.BasePort1;
539         struct hci_dev *hdev = info->hdev;
540
541         if (!hdev)
542                 return -ENODEV;
543
544         dtl1_hci_close(hdev);
545
546         spin_lock_irqsave(&(info->lock), flags);
547
548         /* Reset UART */
549         outb(0, iobase + UART_MCR);
550
551         /* Turn off interrupts */
552         outb(0, iobase + UART_IER);
553
554         spin_unlock_irqrestore(&(info->lock), flags);
555
556         if (hci_unregister_dev(hdev) < 0)
557                 BT_ERR("Can't unregister HCI device %s", hdev->name);
558
559         hci_free_dev(hdev);
560
561         return 0;
562 }
563
564 static dev_link_t *dtl1_attach(void)
565 {
566         dtl1_info_t *info;
567         client_reg_t client_reg;
568         dev_link_t *link;
569         int ret;
570
571         /* Create new info device */
572         info = kzalloc(sizeof(*info), GFP_KERNEL);
573         if (!info)
574                 return NULL;
575
576         link = &info->link;
577         link->priv = info;
578
579         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
580         link->io.NumPorts1 = 8;
581         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
582         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
583
584         link->irq.Handler = dtl1_interrupt;
585         link->irq.Instance = info;
586
587         link->conf.Attributes = CONF_ENABLE_IRQ;
588         link->conf.Vcc = 50;
589         link->conf.IntType = INT_MEMORY_AND_IO;
590
591         /* Register with Card Services */
592         link->next = dev_list;
593         dev_list = link;
594         client_reg.dev_info = &dev_info;
595         client_reg.Version = 0x0210;
596         client_reg.event_callback_args.client_data = link;
597
598         ret = pcmcia_register_client(&link->handle, &client_reg);
599         if (ret != CS_SUCCESS) {
600                 cs_error(link->handle, RegisterClient, ret);
601                 dtl1_detach(link);
602                 return NULL;
603         }
604
605         return link;
606 }
607
608
609 static void dtl1_detach(dev_link_t *link)
610 {
611         dtl1_info_t *info = link->priv;
612         dev_link_t **linkp;
613         int ret;
614
615         /* Locate device structure */
616         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
617                 if (*linkp == link)
618                         break;
619
620         if (*linkp == NULL)
621                 return;
622
623         if (link->state & DEV_CONFIG)
624                 dtl1_release(link);
625
626         if (link->handle) {
627                 ret = pcmcia_deregister_client(link->handle);
628                 if (ret != CS_SUCCESS)
629                         cs_error(link->handle, DeregisterClient, ret);
630         }
631
632         /* Unlink device structure, free bits */
633         *linkp = link->next;
634
635         kfree(info);
636 }
637
638 static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
639 {
640         int i;
641
642         i = pcmcia_get_tuple_data(handle, tuple);
643         if (i != CS_SUCCESS)
644                 return i;
645
646         return pcmcia_parse_tuple(handle, tuple, parse);
647 }
648
649 static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
650 {
651         if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
652                 return CS_NO_MORE_ITEMS;
653         return get_tuple(handle, tuple, parse);
654 }
655
656 static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
657 {
658         if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
659                 return CS_NO_MORE_ITEMS;
660         return get_tuple(handle, tuple, parse);
661 }
662
663 static void dtl1_config(dev_link_t *link)
664 {
665         client_handle_t handle = link->handle;
666         dtl1_info_t *info = link->priv;
667         tuple_t tuple;
668         u_short buf[256];
669         cisparse_t parse;
670         cistpl_cftable_entry_t *cf = &parse.cftable_entry;
671         config_info_t config;
672         int i, last_ret, last_fn;
673
674         tuple.TupleData = (cisdata_t *)buf;
675         tuple.TupleOffset = 0;
676         tuple.TupleDataMax = 255;
677         tuple.Attributes = 0;
678
679         /* Get configuration register information */
680         tuple.DesiredTuple = CISTPL_CONFIG;
681         last_ret = first_tuple(handle, &tuple, &parse);
682         if (last_ret != CS_SUCCESS) {
683                 last_fn = ParseTuple;
684                 goto cs_failed;
685         }
686         link->conf.ConfigBase = parse.config.base;
687         link->conf.Present = parse.config.rmask[0];
688
689         /* Configure card */
690         link->state |= DEV_CONFIG;
691         i = pcmcia_get_configuration_info(handle, &config);
692         link->conf.Vcc = config.Vcc;
693
694         tuple.TupleData = (cisdata_t *)buf;
695         tuple.TupleOffset = 0;
696         tuple.TupleDataMax = 255;
697         tuple.Attributes = 0;
698         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
699
700         /* Look for a generic full-sized window */
701         link->io.NumPorts1 = 8;
702         i = first_tuple(handle, &tuple, &parse);
703         while (i != CS_NO_MORE_ITEMS) {
704                 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
705                         link->conf.ConfigIndex = cf->index;
706                         link->io.BasePort1 = cf->io.win[0].base;
707                         link->io.NumPorts1 = cf->io.win[0].len; /*yo */
708                         link->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
709                         i = pcmcia_request_io(link->handle, &link->io);
710                         if (i == CS_SUCCESS)
711                                 break;
712                 }
713                 i = next_tuple(handle, &tuple, &parse);
714         }
715
716         if (i != CS_SUCCESS) {
717                 cs_error(link->handle, RequestIO, i);
718                 goto failed;
719         }
720
721         i = pcmcia_request_irq(link->handle, &link->irq);
722         if (i != CS_SUCCESS) {
723                 cs_error(link->handle, RequestIRQ, i);
724                 link->irq.AssignedIRQ = 0;
725         }
726
727         i = pcmcia_request_configuration(link->handle, &link->conf);
728         if (i != CS_SUCCESS) {
729                 cs_error(link->handle, RequestConfiguration, i);
730                 goto failed;
731         }
732
733         if (dtl1_open(info) != 0)
734                 goto failed;
735
736         strcpy(info->node.dev_name, info->hdev->name);
737         link->dev = &info->node;
738         link->state &= ~DEV_CONFIG_PENDING;
739
740         return;
741
742 cs_failed:
743         cs_error(link->handle, last_fn, last_ret);
744
745 failed:
746         dtl1_release(link);
747 }
748
749
750 static void dtl1_release(dev_link_t *link)
751 {
752         dtl1_info_t *info = link->priv;
753
754         if (link->state & DEV_PRESENT)
755                 dtl1_close(info);
756
757         link->dev = NULL;
758
759         pcmcia_release_configuration(link->handle);
760         pcmcia_release_io(link->handle, &link->io);
761         pcmcia_release_irq(link->handle, &link->irq);
762
763         link->state &= ~DEV_CONFIG;
764 }
765
766 static int dtl1_suspend(struct pcmcia_device *dev)
767 {
768         dev_link_t *link = dev_to_instance(dev);
769
770         link->state |= DEV_SUSPEND;
771         if (link->state & DEV_CONFIG)
772                 pcmcia_release_configuration(link->handle);
773
774         return 0;
775 }
776
777 static int dtl1_resume(struct pcmcia_device *dev)
778 {
779         dev_link_t *link = dev_to_instance(dev);
780
781         link->state &= ~DEV_SUSPEND;
782         if (DEV_OK(link))
783                 pcmcia_request_configuration(link->handle, &link->conf);
784
785         return 0;
786 }
787
788 static int dtl1_event(event_t event, int priority, event_callback_args_t *args)
789 {
790         dev_link_t *link = args->client_data;
791         dtl1_info_t *info = link->priv;
792
793         switch (event) {
794         case CS_EVENT_CARD_REMOVAL:
795                 link->state &= ~DEV_PRESENT;
796                 if (link->state & DEV_CONFIG) {
797                         dtl1_close(info);
798                         dtl1_release(link);
799                 }
800                 break;
801         case CS_EVENT_CARD_INSERTION:
802                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
803                 dtl1_config(link);
804                 break;
805         }
806
807         return 0;
808 }
809
810 static struct pcmcia_device_id dtl1_ids[] = {
811         PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
812         PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
813         PCMCIA_DEVICE_NULL
814 };
815 MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
816
817 static struct pcmcia_driver dtl1_driver = {
818         .owner          = THIS_MODULE,
819         .drv            = {
820                 .name   = "dtl1_cs",
821         },
822         .attach         = dtl1_attach,
823         .event          = dtl1_event,
824         .detach         = dtl1_detach,
825         .id_table       = dtl1_ids,
826         .suspend        = dtl1_suspend,
827         .resume         = dtl1_resume,
828 };
829
830 static int __init init_dtl1_cs(void)
831 {
832         return pcmcia_register_driver(&dtl1_driver);
833 }
834
835
836 static void __exit exit_dtl1_cs(void)
837 {
838         pcmcia_unregister_driver(&dtl1_driver);
839         BUG_ON(dev_list != NULL);
840 }
841
842 module_init(init_dtl1_cs);
843 module_exit(exit_dtl1_cs);