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ath9k: work around gcc ICEs (again)
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / serial / serial_cs.c
blob164d2a42eb59fe5a5a58e9ea26d13830d493a28c
1 /*======================================================================
2
3 A driver for PCMCIA serial devices
4
5 serial_cs.c 1.134 2002/05/04 05:48:53
6
7 The contents of this file are subject to the Mozilla Public
8 License Version 1.1 (the "License"); you may not use this file
9 except in compliance with the License. You may obtain a copy of
10 the License at http://www.mozilla.org/MPL/
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 Alternatively, the contents of this file may be used under the
22 terms of the GNU General Public License version 2 (the "GPL"), in which
23 case the provisions of the GPL are applicable instead of the
24 above. If you wish to allow the use of your version of this file
25 only under the terms of the GPL and not to allow others to use
26 your version of this file under the MPL, indicate your decision
27 by deleting the provisions above and replace them with the notice
28 and other provisions required by the GPL. If you do not delete
29 the provisions above, a recipient may use your version of this
30 file under either the MPL or the GPL.
31
32 ======================================================================*/
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/kernel.h>
37 #include <linux/init.h>
38 #include <linux/ptrace.h>
39 #include <linux/slab.h>
40 #include <linux/string.h>
41 #include <linux/timer.h>
42 #include <linux/serial_core.h>
43 #include <linux/delay.h>
44 #include <linux/major.h>
45 #include <asm/io.h>
46 #include <asm/system.h>
47
48 #include <pcmcia/cs_types.h>
49 #include <pcmcia/cs.h>
50 #include <pcmcia/cistpl.h>
51 #include <pcmcia/ciscode.h>
52 #include <pcmcia/ds.h>
53 #include <pcmcia/cisreg.h>
54
55 #include "8250.h"
56
57 #ifdef PCMCIA_DEBUG
58 static int pc_debug = PCMCIA_DEBUG;
59 module_param(pc_debug, int, 0644);
60 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
61 static char *version = "serial_cs.c 1.134 2002/05/04 05:48:53 (David Hinds)";
62 #else
63 #define DEBUG(n, args...)
64 #endif
65
66 /*====================================================================*/
67
68 /* Parameters that can be set with 'insmod' */
69
70 /* Enable the speaker? */
71 static int do_sound = 1;
72 /* Skip strict UART tests? */
73 static int buggy_uart;
74
75 module_param(do_sound, int, 0444);
76 module_param(buggy_uart, int, 0444);
77
78 /*====================================================================*/
79
80 /* Table of multi-port card ID's */
81
82 struct serial_quirk {
83 unsigned int manfid;
84 unsigned int prodid;
85 int multi; /* 1 = multifunction, > 1 = # ports */
86 void (*config)(struct pcmcia_device *);
87 void (*setup)(struct pcmcia_device *, struct uart_port *);
88 void (*wakeup)(struct pcmcia_device *);
89 int (*post)(struct pcmcia_device *);
90 };
91
92 struct serial_info {
93 struct pcmcia_device *p_dev;
94 int ndev;
95 int multi;
96 int slave;
97 int manfid;
98 int prodid;
99 int c950ctrl;
100 dev_node_t node[4];
101 int line[4];
102 const struct serial_quirk *quirk;
103 };
104
105 struct serial_cfg_mem {
106 tuple_t tuple;
107 cisparse_t parse;
108 u_char buf[256];
109 };
110
111 /*
112 * vers_1 5.0, "Brain Boxes", "2-Port RS232 card", "r6"
113 * manfid 0x0160, 0x0104
114 * This card appears to have a 14.7456MHz clock.
115 */
116 static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_port *port)
117 {
118 port->uartclk = 14745600;
119 }
120
121 static int quirk_post_ibm(struct pcmcia_device *link)
122 {
123 conf_reg_t reg = { 0, CS_READ, 0x800, 0 };
124 int last_ret, last_fn;
125
126 last_ret = pcmcia_access_configuration_register(link, &reg);
127 if (last_ret) {
128 last_fn = AccessConfigurationRegister;
129 goto cs_failed;
130 }
131 reg.Action = CS_WRITE;
132 reg.Value = reg.Value | 1;
133 last_ret = pcmcia_access_configuration_register(link, &reg);
134 if (last_ret) {
135 last_fn = AccessConfigurationRegister;
136 goto cs_failed;
137 }
138 return 0;
139
140 cs_failed:
141 cs_error(link, last_fn, last_ret);
142 return -ENODEV;
143 }
144
145 /*
146 * Nokia cards are not really multiport cards. Shouldn't this
147 * be handled by setting the quirk entry .multi = 0 | 1 ?
148 */
149 static void quirk_config_nokia(struct pcmcia_device *link)
150 {
151 struct serial_info *info = link->priv;
152
153 if (info->multi > 1)
154 info->multi = 1;
155 }
156
157 static void quirk_wakeup_oxsemi(struct pcmcia_device *link)
158 {
159 struct serial_info *info = link->priv;
160
161 outb(12, info->c950ctrl + 1);
162 }
163
164 /* request_region? oxsemi branch does no request_region too... */
165 /*
166 * This sequence is needed to properly initialize MC45 attached to OXCF950.
167 * I tried decreasing these msleep()s, but it worked properly (survived
168 * 1000 stop/start operations) with these timeouts (or bigger).
169 */
170 static void quirk_wakeup_possio_gcc(struct pcmcia_device *link)
171 {
172 struct serial_info *info = link->priv;
173 unsigned int ctrl = info->c950ctrl;
174
175 outb(0xA, ctrl + 1);
176 msleep(100);
177 outb(0xE, ctrl + 1);
178 msleep(300);
179 outb(0xC, ctrl + 1);
180 msleep(100);
181 outb(0xE, ctrl + 1);
182 msleep(200);
183 outb(0xF, ctrl + 1);
184 msleep(100);
185 outb(0xE, ctrl + 1);
186 msleep(100);
187 outb(0xC, ctrl + 1);
188 }
189
190 /*
191 * Socket Dual IO: this enables irq's for second port
192 */
193 static void quirk_config_socket(struct pcmcia_device *link)
194 {
195 struct serial_info *info = link->priv;
196
197 if (info->multi) {
198 link->conf.Present |= PRESENT_EXT_STATUS;
199 link->conf.ExtStatus = ESR_REQ_ATTN_ENA;
200 }
201 }
202
203 static const struct serial_quirk quirks[] = {
204 {
205 .manfid = 0x0160,
206 .prodid = 0x0104,
207 .multi = -1,
208 .setup = quirk_setup_brainboxes_0104,
209 }, {
210 .manfid = MANFID_IBM,
211 .prodid = ~0,
212 .multi = -1,
213 .post = quirk_post_ibm,
214 }, {
215 .manfid = MANFID_INTEL,
216 .prodid = PRODID_INTEL_DUAL_RS232,
217 .multi = 2,
218 }, {
219 .manfid = MANFID_NATINST,
220 .prodid = PRODID_NATINST_QUAD_RS232,
221 .multi = 4,
222 }, {
223 .manfid = MANFID_NOKIA,
224 .prodid = ~0,
225 .multi = -1,
226 .config = quirk_config_nokia,
227 }, {
228 .manfid = MANFID_OMEGA,
229 .prodid = PRODID_OMEGA_QSP_100,
230 .multi = 4,
231 }, {
232 .manfid = MANFID_OXSEMI,
233 .prodid = ~0,
234 .multi = -1,
235 .wakeup = quirk_wakeup_oxsemi,
236 }, {
237 .manfid = MANFID_POSSIO,
238 .prodid = PRODID_POSSIO_GCC,
239 .multi = -1,
240 .wakeup = quirk_wakeup_possio_gcc,
241 }, {
242 .manfid = MANFID_QUATECH,
243 .prodid = PRODID_QUATECH_DUAL_RS232,
244 .multi = 2,
245 }, {
246 .manfid = MANFID_QUATECH,
247 .prodid = PRODID_QUATECH_DUAL_RS232_D1,
248 .multi = 2,
249 }, {
250 .manfid = MANFID_QUATECH,
251 .prodid = PRODID_QUATECH_DUAL_RS232_G,
252 .multi = 2,
253 }, {
254 .manfid = MANFID_QUATECH,
255 .prodid = PRODID_QUATECH_QUAD_RS232,
256 .multi = 4,
257 }, {
258 .manfid = MANFID_SOCKET,
259 .prodid = PRODID_SOCKET_DUAL_RS232,
260 .multi = 2,
261 .config = quirk_config_socket,
262 }, {
263 .manfid = MANFID_SOCKET,
264 .prodid = ~0,
265 .multi = -1,
266 .config = quirk_config_socket,
267 }
268 };
269
270
271 static int serial_config(struct pcmcia_device * link);
272
273
274 /*======================================================================
275
276 After a card is removed, serial_remove() will unregister
277 the serial device(s), and release the PCMCIA configuration.
278
279 ======================================================================*/
280
281 static void serial_remove(struct pcmcia_device *link)
282 {
283 struct serial_info *info = link->priv;
284 int i;
285
286 DEBUG(0, "serial_release(0x%p)\n", link);
287
288 /*
289 * Recheck to see if the device is still configured.
290 */
291 for (i = 0; i < info->ndev; i++)
292 serial8250_unregister_port(info->line[i]);
293
294 info->p_dev->dev_node = NULL;
295
296 if (!info->slave)
297 pcmcia_disable_device(link);
298 }
299
300 static int serial_suspend(struct pcmcia_device *link)
301 {
302 struct serial_info *info = link->priv;
303 int i;
304
305 for (i = 0; i < info->ndev; i++)
306 serial8250_suspend_port(info->line[i]);
307
308 return 0;
309 }
310
311 static int serial_resume(struct pcmcia_device *link)
312 {
313 struct serial_info *info = link->priv;
314 int i;
315
316 for (i = 0; i < info->ndev; i++)
317 serial8250_resume_port(info->line[i]);
318
319 if (info->quirk && info->quirk->wakeup)
320 info->quirk->wakeup(link);
321
322 return 0;
323 }
324
325 /*======================================================================
326
327 serial_attach() creates an "instance" of the driver, allocating
328 local data structures for one device. The device is registered
329 with Card Services.
330
331 ======================================================================*/
332
333 static int serial_probe(struct pcmcia_device *link)
334 {
335 struct serial_info *info;
336
337 DEBUG(0, "serial_attach()\n");
338
339 /* Create new serial device */
340 info = kzalloc(sizeof (*info), GFP_KERNEL);
341 if (!info)
342 return -ENOMEM;
343 info->p_dev = link;
344 link->priv = info;
345
346 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
347 link->io.NumPorts1 = 8;
348 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
349 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
350 link->conf.Attributes = CONF_ENABLE_IRQ;
351 if (do_sound) {
352 link->conf.Attributes |= CONF_ENABLE_SPKR;
353 link->conf.Status = CCSR_AUDIO_ENA;
354 }
355 link->conf.IntType = INT_MEMORY_AND_IO;
356
357 return serial_config(link);
358 }
359
360 /*======================================================================
361
362 This deletes a driver "instance". The device is de-registered
363 with Card Services. If it has been released, all local data
364 structures are freed. Otherwise, the structures will be freed
365 when the device is released.
366
367 ======================================================================*/
368
369 static void serial_detach(struct pcmcia_device *link)
370 {
371 struct serial_info *info = link->priv;
372
373 DEBUG(0, "serial_detach(0x%p)\n", link);
374
375 /*
376 * Ensure any outstanding scheduled tasks are completed.
377 */
378 flush_scheduled_work();
379
380 /*
381 * Ensure that the ports have been released.
382 */
383 serial_remove(link);
384
385 /* free bits */
386 kfree(info);
387 }
388
389 /*====================================================================*/
390
391 static int setup_serial(struct pcmcia_device *handle, struct serial_info * info,
392 unsigned int iobase, int irq)
393 {
394 struct uart_port port;
395 int line;
396
397 memset(&port, 0, sizeof (struct uart_port));
398 port.iobase = iobase;
399 port.irq = irq;
400 port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
401 port.uartclk = 1843200;
402 port.dev = &handle_to_dev(handle);
403 if (buggy_uart)
404 port.flags |= UPF_BUGGY_UART;
405
406 if (info->quirk && info->quirk->setup)
407 info->quirk->setup(handle, &port);
408
409 line = serial8250_register_port(&port);
410 if (line < 0) {
411 printk(KERN_NOTICE "serial_cs: serial8250_register_port() at "
412 "0x%04lx, irq %d failed\n", (u_long)iobase, irq);
413 return -EINVAL;
414 }
415
416 info->line[info->ndev] = line;
417 sprintf(info->node[info->ndev].dev_name, "ttyS%d", line);
418 info->node[info->ndev].major = TTY_MAJOR;
419 info->node[info->ndev].minor = 0x40 + line;
420 if (info->ndev > 0)
421 info->node[info->ndev - 1].next = &info->node[info->ndev];
422 info->ndev++;
423
424 return 0;
425 }
426
427 /*====================================================================*/
428
429 static int
430 first_tuple(struct pcmcia_device *handle, tuple_t * tuple, cisparse_t * parse)
431 {
432 int i;
433 i = pcmcia_get_first_tuple(handle, tuple);
434 if (i != CS_SUCCESS)
435 return CS_NO_MORE_ITEMS;
436 i = pcmcia_get_tuple_data(handle, tuple);
437 if (i != CS_SUCCESS)
438 return i;
439 return pcmcia_parse_tuple(handle, tuple, parse);
440 }
441
442 static int
443 next_tuple(struct pcmcia_device *handle, tuple_t * tuple, cisparse_t * parse)
444 {
445 int i;
446 i = pcmcia_get_next_tuple(handle, tuple);
447 if (i != CS_SUCCESS)
448 return CS_NO_MORE_ITEMS;
449 i = pcmcia_get_tuple_data(handle, tuple);
450 if (i != CS_SUCCESS)
451 return i;
452 return pcmcia_parse_tuple(handle, tuple, parse);
453 }
454
455 /*====================================================================*/
456
457 static int simple_config(struct pcmcia_device *link)
458 {
459 static const unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
460 static const int size_table[2] = { 8, 16 };
461 struct serial_info *info = link->priv;
462 struct serial_cfg_mem *cfg_mem;
463 tuple_t *tuple;
464 u_char *buf;
465 cisparse_t *parse;
466 cistpl_cftable_entry_t *cf;
467 config_info_t config;
468 int i, j, try;
469 int s;
470
471 cfg_mem = kmalloc(sizeof(struct serial_cfg_mem), GFP_KERNEL);
472 if (!cfg_mem)
473 return -1;
474
475 tuple = &cfg_mem->tuple;
476 parse = &cfg_mem->parse;
477 cf = &parse->cftable_entry;
478 buf = cfg_mem->buf;
479
480 /* If the card is already configured, look up the port and irq */
481 i = pcmcia_get_configuration_info(link, &config);
482 if ((i == CS_SUCCESS) && (config.Attributes & CONF_VALID_CLIENT)) {
483 unsigned int port = 0;
484 if ((config.BasePort2 != 0) && (config.NumPorts2 == 8)) {
485 port = config.BasePort2;
486 info->slave = 1;
487 } else if ((info->manfid == MANFID_OSITECH) &&
488 (config.NumPorts1 == 0x40)) {
489 port = config.BasePort1 + 0x28;
490 info->slave = 1;
491 }
492 if (info->slave) {
493 kfree(cfg_mem);
494 return setup_serial(link, info, port, config.AssignedIRQ);
495 }
496 }
497
498 /* First pass: look for a config entry that looks normal. */
499 tuple->TupleData = (cisdata_t *) buf;
500 tuple->TupleOffset = 0;
501 tuple->TupleDataMax = 255;
502 tuple->Attributes = 0;
503 tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
504 /* Two tries: without IO aliases, then with aliases */
505 for (s = 0; s < 2; s++) {
506 for (try = 0; try < 2; try++) {
507 i = first_tuple(link, tuple, parse);
508 while (i != CS_NO_MORE_ITEMS) {
509 if (i != CS_SUCCESS)
510 goto next_entry;
511 if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
512 link->conf.Vpp =
513 cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
514 if ((cf->io.nwin > 0) && (cf->io.win[0].len == size_table[s]) &&
515 (cf->io.win[0].base != 0)) {
516 link->conf.ConfigIndex = cf->index;
517 link->io.BasePort1 = cf->io.win[0].base;
518 link->io.IOAddrLines = (try == 0) ?
519 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
520 i = pcmcia_request_io(link, &link->io);
521 if (i == CS_SUCCESS)
522 goto found_port;
523 }
524 next_entry:
525 i = next_tuple(link, tuple, parse);
526 }
527 }
528 }
529 /* Second pass: try to find an entry that isn't picky about
530 its base address, then try to grab any standard serial port
531 address, and finally try to get any free port. */
532 i = first_tuple(link, tuple, parse);
533 while (i != CS_NO_MORE_ITEMS) {
534 if ((i == CS_SUCCESS) && (cf->io.nwin > 0) &&
535 ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
536 link->conf.ConfigIndex = cf->index;
537 for (j = 0; j < 5; j++) {
538 link->io.BasePort1 = base[j];
539 link->io.IOAddrLines = base[j] ? 16 : 3;
540 i = pcmcia_request_io(link, &link->io);
541 if (i == CS_SUCCESS)
542 goto found_port;
543 }
544 }
545 i = next_tuple(link, tuple, parse);
546 }
547
548 found_port:
549 if (i != CS_SUCCESS) {
550 printk(KERN_NOTICE
551 "serial_cs: no usable port range found, giving up\n");
552 cs_error(link, RequestIO, i);
553 kfree(cfg_mem);
554 return -1;
555 }
556
557 i = pcmcia_request_irq(link, &link->irq);
558 if (i != CS_SUCCESS) {
559 cs_error(link, RequestIRQ, i);
560 link->irq.AssignedIRQ = 0;
561 }
562 if (info->multi && (info->manfid == MANFID_3COM))
563 link->conf.ConfigIndex &= ~(0x08);
564
565 /*
566 * Apply any configuration quirks.
567 */
568 if (info->quirk && info->quirk->config)
569 info->quirk->config(link);
570
571 i = pcmcia_request_configuration(link, &link->conf);
572 if (i != CS_SUCCESS) {
573 cs_error(link, RequestConfiguration, i);
574 kfree(cfg_mem);
575 return -1;
576 }
577 kfree(cfg_mem);
578 return setup_serial(link, info, link->io.BasePort1, link->irq.AssignedIRQ);
579 }
580
581 static int multi_config(struct pcmcia_device * link)
582 {
583 struct serial_info *info = link->priv;
584 struct serial_cfg_mem *cfg_mem;
585 tuple_t *tuple;
586 u_char *buf;
587 cisparse_t *parse;
588 cistpl_cftable_entry_t *cf;
589 int i, rc, base2 = 0;
590
591 cfg_mem = kmalloc(sizeof(struct serial_cfg_mem), GFP_KERNEL);
592 if (!cfg_mem)
593 return -1;
594 tuple = &cfg_mem->tuple;
595 parse = &cfg_mem->parse;
596 cf = &parse->cftable_entry;
597 buf = cfg_mem->buf;
598
599 tuple->TupleData = (cisdata_t *) buf;
600 tuple->TupleOffset = 0;
601 tuple->TupleDataMax = 255;
602 tuple->Attributes = 0;
603 tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
604
605 /* First, look for a generic full-sized window */
606 link->io.NumPorts1 = info->multi * 8;
607 i = first_tuple(link, tuple, parse);
608 while (i != CS_NO_MORE_ITEMS) {
609 /* The quad port cards have bad CIS's, so just look for a
610 window larger than 8 ports and assume it will be right */
611 if ((i == CS_SUCCESS) && (cf->io.nwin == 1) &&
612 (cf->io.win[0].len > 8)) {
613 link->conf.ConfigIndex = cf->index;
614 link->io.BasePort1 = cf->io.win[0].base;
615 link->io.IOAddrLines =
616 cf->io.flags & CISTPL_IO_LINES_MASK;
617 i = pcmcia_request_io(link, &link->io);
618 base2 = link->io.BasePort1 + 8;
619 if (i == CS_SUCCESS)
620 break;
621 }
622 i = next_tuple(link, tuple, parse);
623 }
624
625 /* If that didn't work, look for two windows */
626 if (i != CS_SUCCESS) {
627 link->io.NumPorts1 = link->io.NumPorts2 = 8;
628 info->multi = 2;
629 i = first_tuple(link, tuple, parse);
630 while (i != CS_NO_MORE_ITEMS) {
631 if ((i == CS_SUCCESS) && (cf->io.nwin == 2)) {
632 link->conf.ConfigIndex = cf->index;
633 link->io.BasePort1 = cf->io.win[0].base;
634 link->io.BasePort2 = cf->io.win[1].base;
635 link->io.IOAddrLines =
636 cf->io.flags & CISTPL_IO_LINES_MASK;
637 i = pcmcia_request_io(link, &link->io);
638 base2 = link->io.BasePort2;
639 if (i == CS_SUCCESS)
640 break;
641 }
642 i = next_tuple(link, tuple, parse);
643 }
644 }
645
646 if (i != CS_SUCCESS) {
647 cs_error(link, RequestIO, i);
648 rc = -1;
649 goto free_cfg_mem;
650 }
651
652 i = pcmcia_request_irq(link, &link->irq);
653 if (i != CS_SUCCESS) {
654 printk(KERN_NOTICE
655 "serial_cs: no usable port range found, giving up\n");
656 cs_error(link, RequestIRQ, i);
657 link->irq.AssignedIRQ = 0;
658 }
659
660 /*
661 * Apply any configuration quirks.
662 */
663 if (info->quirk && info->quirk->config)
664 info->quirk->config(link);
665
666 i = pcmcia_request_configuration(link, &link->conf);
667 if (i != CS_SUCCESS) {
668 cs_error(link, RequestConfiguration, i);
669 rc = -1;
670 goto free_cfg_mem;
671 }
672
673 /* The Oxford Semiconductor OXCF950 cards are in fact single-port:
674 * 8 registers are for the UART, the others are extra registers.
675 * Siemen's MC45 PCMCIA (Possio's GCC) is OXCF950 based too.
676 */
677 if (info->manfid == MANFID_OXSEMI || (info->manfid == MANFID_POSSIO &&
678 info->prodid == PRODID_POSSIO_GCC)) {
679 int err;
680
681 if (cf->index == 1 || cf->index == 3) {
682 err = setup_serial(link, info, base2,
683 link->irq.AssignedIRQ);
684 base2 = link->io.BasePort1;
685 } else {
686 err = setup_serial(link, info, link->io.BasePort1,
687 link->irq.AssignedIRQ);
688 }
689 info->c950ctrl = base2;
690
691 /*
692 * FIXME: We really should wake up the port prior to
693 * handing it over to the serial layer.
694 */
695 if (info->quirk && info->quirk->wakeup)
696 info->quirk->wakeup(link);
697
698 rc = 0;
699 goto free_cfg_mem;
700 }
701
702 setup_serial(link, info, link->io.BasePort1, link->irq.AssignedIRQ);
703 for (i = 0; i < info->multi - 1; i++)
704 setup_serial(link, info, base2 + (8 * i),
705 link->irq.AssignedIRQ);
706 rc = 0;
707 free_cfg_mem:
708 kfree(cfg_mem);
709 return rc;
710 }
711
712 /*======================================================================
713
714 serial_config() is scheduled to run after a CARD_INSERTION event
715 is received, to configure the PCMCIA socket, and to make the
716 serial device available to the system.
717
718 ======================================================================*/
719
720 static int serial_config(struct pcmcia_device * link)
721 {
722 struct serial_info *info = link->priv;
723 struct serial_cfg_mem *cfg_mem;
724 tuple_t *tuple;
725 u_char *buf;
726 cisparse_t *parse;
727 cistpl_cftable_entry_t *cf;
728 int i;
729
730 DEBUG(0, "serial_config(0x%p)\n", link);
731
732 cfg_mem = kmalloc(sizeof(struct serial_cfg_mem), GFP_KERNEL);
733 if (!cfg_mem)
734 goto failed;
735
736 tuple = &cfg_mem->tuple;
737 parse = &cfg_mem->parse;
738 cf = &parse->cftable_entry;
739 buf = cfg_mem->buf;
740
741 tuple->TupleData = (cisdata_t *) buf;
742 tuple->TupleOffset = 0;
743 tuple->TupleDataMax = 255;
744 tuple->Attributes = 0;
745
746 /* Is this a compliant multifunction card? */
747 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
748 tuple->Attributes = TUPLE_RETURN_COMMON | TUPLE_RETURN_LINK;
749 info->multi = (first_tuple(link, tuple, parse) == CS_SUCCESS);
750
751 /* Is this a multiport card? */
752 tuple->DesiredTuple = CISTPL_MANFID;
753 info->manfid = link->manf_id;
754 info->prodid = link->card_id;
755
756 for (i = 0; i < ARRAY_SIZE(quirks); i++)
757 if ((quirks[i].manfid == ~0 ||
758 quirks[i].manfid == info->manfid) &&
759 (quirks[i].prodid == ~0 ||
760 quirks[i].prodid == info->prodid)) {
761 info->quirk = &quirks[i];
762 break;
763 }
764
765 /* Another check for dual-serial cards: look for either serial or
766 multifunction cards that ask for appropriate IO port ranges */
767 tuple->DesiredTuple = CISTPL_FUNCID;
768 if ((info->multi == 0) &&
769 (link->has_func_id) &&
770 ((link->func_id == CISTPL_FUNCID_MULTI) ||
771 (link->func_id == CISTPL_FUNCID_SERIAL))) {
772 tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
773 if (first_tuple(link, tuple, parse) == CS_SUCCESS) {
774 if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0))
775 info->multi = cf->io.win[0].len >> 3;
776 if ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) &&
777 (cf->io.win[1].len == 8))
778 info->multi = 2;
779 }
780 }
781
782 /*
783 * Apply any multi-port quirk.
784 */
785 if (info->quirk && info->quirk->multi != -1)
786 info->multi = info->quirk->multi;
787
788 if (info->multi > 1)
789 multi_config(link);
790 else
791 simple_config(link);
792
793 if (info->ndev == 0)
794 goto failed;
795
796 /*
797 * Apply any post-init quirk. FIXME: This should really happen
798 * before we register the port, since it might already be in use.
799 */
800 if (info->quirk && info->quirk->post)
801 if (info->quirk->post(link))
802 goto failed;
803
804 link->dev_node = &info->node[0];
805 kfree(cfg_mem);
806 return 0;
807
808 failed:
809 serial_remove(link);
810 kfree(cfg_mem);
811 return -ENODEV;
812 }
813
814 static struct pcmcia_device_id serial_ids[] = {
815 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0057, 0x0021),
816 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0089, 0x110a),
817 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0104, 0x000a),
818 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0105, 0xea15),
819 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0109, 0x0501),
820 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0138, 0x110a),
821 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0140, 0x000a),
822 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0143, 0x3341),
823 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0143, 0xc0ab),
824 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x016c, 0x0081),
825 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x021b, 0x0101),
826 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x08a1, 0xc0ab),
827 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0105, 0x0d0a),
828 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0105, 0x0e0a),
829 PCMCIA_PFC_DEVICE_PROD_ID123(1, "MEGAHERTZ", "CC/XJEM3288", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x04cd2988, 0x46a52d63),
830 PCMCIA_PFC_DEVICE_PROD_ID123(1, "MEGAHERTZ", "CC/XJEM3336", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x0143b773, 0x46a52d63),
831 PCMCIA_PFC_DEVICE_PROD_ID123(1, "MEGAHERTZ", "EM1144T", "PCMCIA MODEM", 0xf510db04, 0x856d66c8, 0xbd6c43ef),
832 PCMCIA_PFC_DEVICE_PROD_ID123(1, "MEGAHERTZ", "XJEM1144/CCEM1144", "PCMCIA MODEM", 0xf510db04, 0x52d21e1e, 0xbd6c43ef),
833 PCMCIA_PFC_DEVICE_PROD_ID13(1, "Xircom", "CEM28", 0x2e3ee845, 0x0ea978ea),
834 PCMCIA_PFC_DEVICE_PROD_ID13(1, "Xircom", "CEM33", 0x2e3ee845, 0x80609023),
835 PCMCIA_PFC_DEVICE_PROD_ID13(1, "Xircom", "CEM56", 0x2e3ee845, 0xa650c32a),
836 PCMCIA_PFC_DEVICE_PROD_ID13(1, "Xircom", "REM10", 0x2e3ee845, 0x76df1d29),
837 PCMCIA_PFC_DEVICE_PROD_ID13(1, "Xircom", "XEM5600", 0x2e3ee845, 0xf1403719),
838 PCMCIA_PFC_DEVICE_PROD_ID12(1, "AnyCom", "Fast Ethernet + 56K COMBO", 0x578ba6e7, 0xb0ac62c4),
839 PCMCIA_PFC_DEVICE_PROD_ID12(1, "D-Link", "DME336T", 0x1a424a1c, 0xb23897ff),
840 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Gateway 2000", "XJEM3336", 0xdd9989be, 0x662c394c),
841 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Grey Cell", "GCS3000", 0x2a151fac, 0x48b932ae),
842 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Linksys", "EtherFast 10&100 + 56K PC Card (PCMLM56)", 0x0733cc81, 0xb3765033),
843 PCMCIA_PFC_DEVICE_PROD_ID12(1, "LINKSYS", "PCMLM336", 0xf7cb0b07, 0x7a821b58),
844 PCMCIA_PFC_DEVICE_PROD_ID12(1, "MEGAHERTZ", "XJEM1144/CCEM1144", 0xf510db04, 0x52d21e1e),
845 PCMCIA_PFC_DEVICE_PROD_ID12(1, "MICRO RESEARCH", "COMBO-L/M-336", 0xb2ced065, 0x3ced0555),
846 PCMCIA_PFC_DEVICE_PROD_ID12(1, "NEC", "PK-UG-J001" ,0x18df0ba0 ,0x831b1064),
847 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Ositech", "Trumpcard:Jack of Diamonds Modem+Ethernet", 0xc2f80cd, 0x656947b9),
848 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Ositech", "Trumpcard:Jack of Hearts Modem+Ethernet", 0xc2f80cd, 0xdc9ba5ed),
849 PCMCIA_PFC_DEVICE_PROD_ID12(1, "PCMCIAs", "ComboCard", 0xdcfe12d3, 0xcd8906cc),
850 PCMCIA_PFC_DEVICE_PROD_ID12(1, "PCMCIAs", "LanModem", 0xdcfe12d3, 0xc67c648f),
851 PCMCIA_PFC_DEVICE_PROD_ID12(1, "TDK", "GlobalNetworker 3410/3412", 0x1eae9475, 0xd9a93bed),
852 PCMCIA_PFC_DEVICE_PROD_ID12(1, "Xircom", "CreditCard Ethernet+Modem II", 0x2e3ee845, 0xeca401bf),
853 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0032, 0x0a05),
854 PCMCIA_PFC_DEVICE_MANF_CARD(1, 0x0032, 0x1101),
855 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0104, 0x0070),
856 PCMCIA_MFC_DEVICE_MANF_CARD(1, 0x0101, 0x0562),
857 PCMCIA_MFC_DEVICE_MANF_CARD(1, 0x0104, 0x0070),
858 PCMCIA_MFC_DEVICE_MANF_CARD(1, 0x016c, 0x0020),
859 PCMCIA_MFC_DEVICE_PROD_ID123(1, "APEX DATA", "MULTICARD", "ETHERNET-MODEM", 0x11c2da09, 0x7289dc5d, 0xaad95e1f),
860 PCMCIA_MFC_DEVICE_PROD_ID12(1, "IBM", "Home and Away 28.8 PC Card ", 0xb569a6e5, 0x5bd4ff2c),
861 PCMCIA_MFC_DEVICE_PROD_ID12(1, "IBM", "Home and Away Credit Card Adapter", 0xb569a6e5, 0x4bdf15c3),
862 PCMCIA_MFC_DEVICE_PROD_ID12(1, "IBM", "w95 Home and Away Credit Card ", 0xb569a6e5, 0xae911c15),
863 PCMCIA_MFC_DEVICE_PROD_ID1(1, "Motorola MARQUIS", 0xf03e4e77),
864 PCMCIA_MFC_DEVICE_PROD_ID2(1, "FAX/Modem/Ethernet Combo Card ", 0x1ed59302),
865 PCMCIA_DEVICE_MANF_CARD(0x0089, 0x0301),
866 PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x0276),
867 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0039),
868 PCMCIA_DEVICE_MANF_CARD(0x0104, 0x0006),
869 PCMCIA_DEVICE_MANF_CARD(0x0105, 0x410a),
870 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0d50),
871 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0d51),
872 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0d52),
873 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0d53),
874 PCMCIA_DEVICE_MANF_CARD(0x010b, 0xd180),
875 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x000e),
876 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x001b),
877 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0025),
878 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0045),
879 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0052),
880 PCMCIA_DEVICE_PROD_ID134("ADV", "TECH", "COMpad-32/85", 0x67459937, 0x916d02ba, 0x8fbe92ae),
881 PCMCIA_DEVICE_PROD_ID124("GATEWAY2000", "CC3144", "PCMCIA MODEM", 0x506bccae, 0xcb3685f1, 0xbd6c43ef),
882 PCMCIA_DEVICE_PROD_ID14("MEGAHERTZ", "PCMCIA MODEM", 0xf510db04, 0xbd6c43ef),
883 PCMCIA_DEVICE_PROD_ID124("TOSHIBA", "T144PF", "PCMCIA MODEM", 0xb4585a1a, 0x7271409c, 0xbd6c43ef),
884 PCMCIA_DEVICE_PROD_ID123("FUJITSU", "FC14F ", "MBH10213", 0x6ee5a3d8, 0x30ead12b, 0xb00f05a0),
885 PCMCIA_DEVICE_PROD_ID123("Novatel Wireless", "Merlin UMTS Modem", "U630", 0x32607776, 0xd9e73b13, 0xe87332e),
886 PCMCIA_DEVICE_PROD_ID13("MEGAHERTZ", "V.34 PCMCIA MODEM", 0xf510db04, 0xbb2cce4a),
887 PCMCIA_DEVICE_PROD_ID12("Brain Boxes", "Bluetooth PC Card", 0xee138382, 0xd4ce9b02),
888 PCMCIA_DEVICE_PROD_ID12("CIRRUS LOGIC", "FAX MODEM", 0xe625f451, 0xcecd6dfa),
889 PCMCIA_DEVICE_PROD_ID12("COMPAQ", "PCMCIA 28800 FAX/DATA MODEM", 0xa3a3062c, 0x8cbd7c76),
890 PCMCIA_DEVICE_PROD_ID12("COMPAQ", "PCMCIA 33600 FAX/DATA MODEM", 0xa3a3062c, 0x5a00ce95),
891 PCMCIA_DEVICE_PROD_ID12("Computerboards, Inc.", "PCM-COM422", 0xd0b78f51, 0x7e2d49ed),
892 PCMCIA_DEVICE_PROD_ID12("Dr. Neuhaus", "FURY CARD 14K4", 0x76942813, 0x8b96ce65),
893 PCMCIA_DEVICE_PROD_ID12("Intelligent", "ANGIA FAX/MODEM", 0xb496e65e, 0xf31602a6),
894 PCMCIA_DEVICE_PROD_ID12("Intel", "MODEM 2400+", 0x816cc815, 0x412729fb),
895 PCMCIA_DEVICE_PROD_ID12("IOTech Inc ", "PCMCIA Dual RS-232 Serial Port Card", 0x3bd2d898, 0x92abc92f),
896 PCMCIA_DEVICE_PROD_ID12("MACRONIX", "FAX/MODEM", 0x668388b3, 0x3f9bdf2f),
897 PCMCIA_DEVICE_PROD_ID12("Multi-Tech", "MT1432LT", 0x5f73be51, 0x0b3e2383),
898 PCMCIA_DEVICE_PROD_ID12("Multi-Tech", "MT2834LT", 0x5f73be51, 0x4cd7c09e),
899 PCMCIA_DEVICE_PROD_ID12("OEM ", "C288MX ", 0xb572d360, 0xd2385b7a),
900 PCMCIA_DEVICE_PROD_ID12("PCMCIA ", "C336MX ", 0x99bcafe9, 0xaa25bcab),
901 PCMCIA_DEVICE_PROD_ID12("Quatech Inc", "PCMCIA Dual RS-232 Serial Port Card", 0xc4420b35, 0x92abc92f),
902 PCMCIA_DEVICE_PROD_ID12("Quatech Inc", "Dual RS-232 Serial Port PC Card", 0xc4420b35, 0x031a380d),
903 PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "PCMCIA", "EN2218-LAN/MODEM", 0x281f1c5d, 0x570f348e, "PCMLM28.cis"),
904 PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "PCMCIA", "UE2218-LAN/MODEM", 0x281f1c5d, 0x6fdcacee, "PCMLM28.cis"),
905 PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "Psion Dacom", "Gold Card V34 Ethernet", 0xf5f025c2, 0x338e8155, "PCMLM28.cis"),
906 PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "Psion Dacom", "Gold Card V34 Ethernet GSM", 0xf5f025c2, 0x4ae85d35, "PCMLM28.cis"),
907 PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "LINKSYS", "PCMLM28", 0xf7cb0b07, 0x66881874, "PCMLM28.cis"),
908 PCMCIA_MFC_DEVICE_CIS_PROD_ID12(1, "DAYNA COMMUNICATIONS", "LAN AND MODEM MULTIFUNCTION", 0x8fdf8f89, 0xdd5ed9e8, "DP83903.cis"),
909 PCMCIA_MFC_DEVICE_CIS_PROD_ID4(1, "NSC MF LAN/Modem", 0x58fc6056, "DP83903.cis"),
910 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(1, 0x0101, 0x0556, "3CCFEM556.cis"),
911 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(1, 0x0175, 0x0000, "DP83903.cis"),
912 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(1, 0x0101, 0x0035, "3CXEM556.cis"),
913 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(1, 0x0101, 0x003d, "3CXEM556.cis"),
914 PCMCIA_DEVICE_CIS_PROD_ID12("Sierra Wireless", "AC850", 0xd85f6206, 0x42a2c018, "SW_8xx_SER.cis"), /* Sierra Wireless AC850 3G Network Adapter R1 */
915 PCMCIA_DEVICE_CIS_MANF_CARD(0x0192, 0x0710, "SW_7xx_SER.cis"), /* Sierra Wireless AC710/AC750 GPRS Network Adapter R1 */
916 PCMCIA_DEVICE_CIS_MANF_CARD(0x0192, 0xa555, "SW_555_SER.cis"), /* Sierra Aircard 555 CDMA 1xrtt Modem -- pre update */
917 PCMCIA_DEVICE_CIS_MANF_CARD(0x013f, 0xa555, "SW_555_SER.cis"), /* Sierra Aircard 555 CDMA 1xrtt Modem -- post update */
918 PCMCIA_DEVICE_CIS_PROD_ID12("MultiTech", "PCMCIA 56K DataFax", 0x842047ee, 0xc2efcf03, "MT5634ZLX.cis"),
919 PCMCIA_DEVICE_CIS_PROD_ID12("ADVANTECH", "COMpad-32/85B-4", 0x96913a85, 0xcec8f102, "COMpad4.cis"),
920 PCMCIA_DEVICE_CIS_PROD_ID123("ADVANTECH", "COMpad-32/85", "1.0", 0x96913a85, 0x8fbe92ae, 0x0877b627, "COMpad2.cis"),
921 PCMCIA_DEVICE_CIS_PROD_ID2("RS-COM 2P", 0xad20b156, "RS-COM-2P.cis"),
922 PCMCIA_DEVICE_CIS_MANF_CARD(0x0013, 0x0000, "GLOBETROTTER.cis"),
923 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL100 1.00.",0x19ca78af,0xf964f42b),
924 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL100",0x19ca78af,0x71d98e83),
925 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL232 1.00.",0x19ca78af,0x69fb7490),
926 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL232",0x19ca78af,0xb6bc0235),
927 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c2000.","SERIAL CARD: CF232",0x63f2e0bd,0xb9e175d3),
928 PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c2000.","SERIAL CARD: CF232-5",0x63f2e0bd,0xfce33442),
929 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF232",0x3beb8cf2,0x171e7190),
930 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF232-5",0x3beb8cf2,0x20da4262),
931 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF428",0x3beb8cf2,0xea5dd57d),
932 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF500",0x3beb8cf2,0xd77255fa),
933 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: IC232",0x3beb8cf2,0x6a709903),
934 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: SL232",0x3beb8cf2,0x18430676),
935 PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: XL232",0x3beb8cf2,0x6f933767),
936 PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: CF332",0x3beb8cf2,0x16dc1ba7),
937 PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL332",0x3beb8cf2,0x19816c41),
938 PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL385",0x3beb8cf2,0x64112029),
939 PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
940 PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
941 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: CF332",0x3beb8cf2,0x16dc1ba7),
942 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL332",0x3beb8cf2,0x19816c41),
943 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL385",0x3beb8cf2,0x64112029),
944 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
945 PCMCIA_MFC_DEVICE_PROD_ID12(2,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
946 PCMCIA_MFC_DEVICE_PROD_ID12(3,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
947 PCMCIA_DEVICE_MANF_CARD(0x0279, 0x950b),
948 /* too generic */
949 /* PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0160, 0x0002), */
950 /* PCMCIA_MFC_DEVICE_MANF_CARD(1, 0x0160, 0x0002), */
951 PCMCIA_DEVICE_FUNC_ID(2),
952 PCMCIA_DEVICE_NULL,
953 };
954 MODULE_DEVICE_TABLE(pcmcia, serial_ids);
955
956 static struct pcmcia_driver serial_cs_driver = {
957 .owner = THIS_MODULE,
958 .drv = {
959 .name = "serial_cs",
960 },
961 .probe = serial_probe,
962 .remove = serial_detach,
963 .id_table = serial_ids,
964 .suspend = serial_suspend,
965 .resume = serial_resume,
966 };
967
968 static int __init init_serial_cs(void)
969 {
970 return pcmcia_register_driver(&serial_cs_driver);
971 }
972
973 static void __exit exit_serial_cs(void)
974 {
975 pcmcia_unregister_driver(&serial_cs_driver);
976 }
977
978 module_init(init_serial_cs);
979 module_exit(exit_serial_cs);
980
981 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree