1 /*-
2 * Copyright (c) 1998, 1999, 2001 Nicolas Souchu
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*
28 * Power Management support for the Acer M15x3 chipsets
29 */
30
31 #include <sys/param.h>
32 #include <sys/bus.h>
33 #include <sys/kernel.h>
34 #include <sys/lock.h>
35 #include <sys/module.h>
36 #include <sys/mutex.h>
37 #include <sys/systm.h>
38
39 #include <machine/bus.h>
40 #include <machine/resource.h>
41 #include <sys/rman.h>
42
43 #include <dev/pci/pcivar.h>
44 #include <dev/pci/pcireg.h>
45
46 #include <dev/smbus/smbconf.h>
47 #include "smbus_if.h"
48
49 #define ALPM_DEBUG(x) if (alpm_debug) (x)
50
51 #ifdef DEBUG
52 static int alpm_debug = 1;
53 #else
54 static int alpm_debug = 0;
55 #endif
56
57 #define ACER_M1543_PMU_ID 0x710110b9
58
59 /*
60 * I/O registers offsets - the base address is programmed via the
61 * SMBBA PCI configuration register
62 */
63 #define SMBSTS 0x0 /* SMBus host/slave status register */
64 #define SMBCMD 0x1 /* SMBus host/slave command register */
65 #define SMBSTART 0x2 /* start to generate programmed cycle */
66 #define SMBHADDR 0x3 /* host address register */
67 #define SMBHDATA 0x4 /* data A register for host controller */
68 #define SMBHDATB 0x5 /* data B register for host controller */
69 #define SMBHBLOCK 0x6 /* block register for host controller */
70 #define SMBHCMD 0x7 /* command register for host controller */
71
72 /* SMBHADDR mask. */
73 #define LSB 0x1 /* XXX: Better name: Read/Write? */
74
75 /* SMBSTS masks */
76 #define TERMINATE 0x80
77 #define BUS_COLLI 0x40
78 #define DEVICE_ERR 0x20
79 #define SMI_I_STS 0x10
80 #define HST_BSY 0x08
81 #define IDL_STS 0x04
82 #define HSTSLV_STS 0x02
83 #define HSTSLV_BSY 0x01
84
85 /* SMBCMD masks */
86 #define SMB_BLK_CLR 0x80
87 #define T_OUT_CMD 0x08
88 #define ABORT_HOST 0x04
89
90 /* SMBus commands */
91 #define SMBQUICK 0x00
92 #define SMBSRBYTE 0x10 /* send/receive byte */
93 #define SMBWRBYTE 0x20 /* write/read byte */
94 #define SMBWRWORD 0x30 /* write/read word */
95 #define SMBWRBLOCK 0x40 /* write/read block */
96
97 /* PCI configuration registers and masks
98 */
99 #define COM 0x4
100 #define COM_ENABLE_IO 0x1
101
102 #define SMBBA PCIR_BAR(1)
103
104 #define ATPC 0x5b
105 #define ATPC_SMBCTRL 0x04 /* XX linux has this as 0x6 */
106
107 #define SMBHSI 0xe0
108 #define SMBHSI_SLAVE 0x2
109 #define SMBHSI_HOST 0x1
110
111 #define SMBHCBC 0xe2
112 #define SMBHCBC_CLOCK 0x70
113
114 #define SMBCLOCK_149K 0x0
115 #define SMBCLOCK_74K 0x20
116 #define SMBCLOCK_37K 0x40
117 #define SMBCLOCK_223K 0x80
118 #define SMBCLOCK_111K 0xa0
119 #define SMBCLOCK_55K 0xc0
120
121 struct alpm_softc {
122 int base;
123 struct resource *res;
124 bus_space_tag_t smbst;
125 bus_space_handle_t smbsh;
126 device_t smbus;
127 struct mtx lock;
128 };
129
130 #define ALPM_LOCK(alpm) mtx_lock(&(alpm)->lock)
131 #define ALPM_UNLOCK(alpm) mtx_unlock(&(alpm)->lock)
132 #define ALPM_LOCK_ASSERT(alpm) mtx_assert(&(alpm)->lock, MA_OWNED)
133
134 #define ALPM_SMBINB(alpm,register) \
135 (bus_space_read_1(alpm->smbst, alpm->smbsh, register))
136 #define ALPM_SMBOUTB(alpm,register,value) \
137 (bus_space_write_1(alpm->smbst, alpm->smbsh, register, value))
138
139 static int alpm_detach(device_t dev);
140
141 static int
alpm_probe(device_t dev)142 alpm_probe(device_t dev)
143 {
144
145 if (pci_get_devid(dev) == ACER_M1543_PMU_ID) {
146 device_set_desc(dev, "AcerLabs M15x3 Power Management Unit");
147
148 return (BUS_PROBE_DEFAULT);
149 }
150
151 return (ENXIO);
152 }
153
154 static int
alpm_attach(device_t dev)155 alpm_attach(device_t dev)
156 {
157 int rid;
158 u_int32_t l;
159 struct alpm_softc *alpm;
160
161 alpm = device_get_softc(dev);
162
163 /* Unlock SMBIO base register access */
164 l = pci_read_config(dev, ATPC, 1);
165 pci_write_config(dev, ATPC, l & ~ATPC_SMBCTRL, 1);
166
167 /*
168 * XX linux sets clock to 74k, should we?
169 l = pci_read_config(dev, SMBHCBC, 1);
170 l &= 0x1f;
171 l |= SMBCLOCK_74K;
172 pci_write_config(dev, SMBHCBC, l, 1);
173 */
174
175 if (bootverbose || alpm_debug) {
176 l = pci_read_config(dev, SMBHSI, 1);
177 device_printf(dev, "%s/%s",
178 (l & SMBHSI_HOST) ? "host":"nohost",
179 (l & SMBHSI_SLAVE) ? "slave":"noslave");
180
181 l = pci_read_config(dev, SMBHCBC, 1);
182 switch (l & SMBHCBC_CLOCK) {
183 case SMBCLOCK_149K:
184 printf(" 149K");
185 break;
186 case SMBCLOCK_74K:
187 printf(" 74K");
188 break;
189 case SMBCLOCK_37K:
190 printf(" 37K");
191 break;
192 case SMBCLOCK_223K:
193 printf(" 223K");
194 break;
195 case SMBCLOCK_111K:
196 printf(" 111K");
197 break;
198 case SMBCLOCK_55K:
199 printf(" 55K");
200 break;
201 default:
202 printf("unknown");
203 break;
204 }
205 printf("\n");
206 }
207
208 rid = SMBBA;
209 alpm->res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
210 RF_ACTIVE);
211
212 if (alpm->res == NULL) {
213 device_printf(dev,"Could not allocate Bus space\n");
214 return (ENXIO);
215 }
216 alpm->smbst = rman_get_bustag(alpm->res);
217 alpm->smbsh = rman_get_bushandle(alpm->res);
218 mtx_init(&alpm->lock, device_get_nameunit(dev), "alpm", MTX_DEF);
219
220 /* attach the smbus */
221 alpm->smbus = device_add_child(dev, "smbus", -1);
222 if (alpm->smbus == NULL) {
223 alpm_detach(dev);
224 return (EINVAL);
225 }
226 bus_generic_attach(dev);
227
228 return (0);
229 }
230
231 static int
alpm_detach(device_t dev)232 alpm_detach(device_t dev)
233 {
234 struct alpm_softc *alpm = device_get_softc(dev);
235
236 if (alpm->smbus) {
237 device_delete_child(dev, alpm->smbus);
238 alpm->smbus = NULL;
239 }
240 mtx_destroy(&alpm->lock);
241
242 if (alpm->res)
243 bus_release_resource(dev, SYS_RES_IOPORT, SMBBA, alpm->res);
244
245 return (0);
246 }
247
248 static int
alpm_callback(device_t dev,int index,void * data)249 alpm_callback(device_t dev, int index, void *data)
250 {
251 int error = 0;
252
253 switch (index) {
254 case SMB_REQUEST_BUS:
255 case SMB_RELEASE_BUS:
256 /* ok, bus allocation accepted */
257 break;
258 default:
259 error = EINVAL;
260 }
261
262 return (error);
263 }
264
265 static int
alpm_clear(struct alpm_softc * sc)266 alpm_clear(struct alpm_softc *sc)
267 {
268 ALPM_SMBOUTB(sc, SMBSTS, 0xff);
269 DELAY(10);
270
271 return (0);
272 }
273
274 #if 0
275 static int
276 alpm_abort(struct alpm_softc *sc)
277 {
278 ALPM_SMBOUTB(sc, SMBCMD, T_OUT_CMD | ABORT_HOST);
279
280 return (0);
281 }
282 #endif
283
284 static int
alpm_idle(struct alpm_softc * sc)285 alpm_idle(struct alpm_softc *sc)
286 {
287 u_char sts;
288
289 sts = ALPM_SMBINB(sc, SMBSTS);
290
291 ALPM_DEBUG(printf("alpm: idle? STS=0x%x\n", sts));
292
293 return (sts & IDL_STS);
294 }
295
296 /*
297 * Poll the SMBus controller
298 */
299 static int
alpm_wait(struct alpm_softc * sc)300 alpm_wait(struct alpm_softc *sc)
301 {
302 int count = 10000;
303 u_char sts = 0;
304 int error;
305
306 /* wait for command to complete and SMBus controller is idle */
307 while (count--) {
308 DELAY(10);
309 sts = ALPM_SMBINB(sc, SMBSTS);
310 if (sts & SMI_I_STS)
311 break;
312 }
313
314 ALPM_DEBUG(printf("alpm: STS=0x%x\n", sts));
315
316 error = SMB_ENOERR;
317
318 if (!count)
319 error |= SMB_ETIMEOUT;
320
321 if (sts & TERMINATE)
322 error |= SMB_EABORT;
323
324 if (sts & BUS_COLLI)
325 error |= SMB_ENOACK;
326
327 if (sts & DEVICE_ERR)
328 error |= SMB_EBUSERR;
329
330 if (error != SMB_ENOERR)
331 alpm_clear(sc);
332
333 return (error);
334 }
335
336 static int
alpm_quick(device_t dev,u_char slave,int how)337 alpm_quick(device_t dev, u_char slave, int how)
338 {
339 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
340 int error;
341
342 ALPM_LOCK(sc);
343 alpm_clear(sc);
344 if (!alpm_idle(sc)) {
345 ALPM_UNLOCK(sc);
346 return (EBUSY);
347 }
348
349 switch (how) {
350 case SMB_QWRITE:
351 ALPM_DEBUG(printf("alpm: QWRITE to 0x%x", slave));
352 ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
353 break;
354 case SMB_QREAD:
355 ALPM_DEBUG(printf("alpm: QREAD to 0x%x", slave));
356 ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
357 break;
358 default:
359 panic("%s: unknown QUICK command (%x)!", __func__,
360 how);
361 }
362 ALPM_SMBOUTB(sc, SMBCMD, SMBQUICK);
363 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
364
365 error = alpm_wait(sc);
366
367 ALPM_DEBUG(printf(", error=0x%x\n", error));
368 ALPM_UNLOCK(sc);
369
370 return (error);
371 }
372
373 static int
alpm_sendb(device_t dev,u_char slave,char byte)374 alpm_sendb(device_t dev, u_char slave, char byte)
375 {
376 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
377 int error;
378
379 ALPM_LOCK(sc);
380 alpm_clear(sc);
381 if (!alpm_idle(sc)) {
382 ALPM_UNLOCK(sc);
383 return (SMB_EBUSY);
384 }
385
386 ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
387 ALPM_SMBOUTB(sc, SMBCMD, SMBSRBYTE);
388 ALPM_SMBOUTB(sc, SMBHDATA, byte);
389 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
390
391 error = alpm_wait(sc);
392
393 ALPM_DEBUG(printf("alpm: SENDB to 0x%x, byte=0x%x, error=0x%x\n", slave, byte, error));
394 ALPM_UNLOCK(sc);
395
396 return (error);
397 }
398
399 static int
alpm_recvb(device_t dev,u_char slave,char * byte)400 alpm_recvb(device_t dev, u_char slave, char *byte)
401 {
402 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
403 int error;
404
405 ALPM_LOCK(sc);
406 alpm_clear(sc);
407 if (!alpm_idle(sc)) {
408 ALPM_UNLOCK(sc);
409 return (SMB_EBUSY);
410 }
411
412 ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
413 ALPM_SMBOUTB(sc, SMBCMD, SMBSRBYTE);
414 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
415
416 if ((error = alpm_wait(sc)) == SMB_ENOERR)
417 *byte = ALPM_SMBINB(sc, SMBHDATA);
418
419 ALPM_DEBUG(printf("alpm: RECVB from 0x%x, byte=0x%x, error=0x%x\n", slave, *byte, error));
420 ALPM_UNLOCK(sc);
421
422 return (error);
423 }
424
425 static int
alpm_writeb(device_t dev,u_char slave,char cmd,char byte)426 alpm_writeb(device_t dev, u_char slave, char cmd, char byte)
427 {
428 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
429 int error;
430
431 ALPM_LOCK(sc);
432 alpm_clear(sc);
433 if (!alpm_idle(sc)) {
434 ALPM_UNLOCK(sc);
435 return (SMB_EBUSY);
436 }
437
438 ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
439 ALPM_SMBOUTB(sc, SMBCMD, SMBWRBYTE);
440 ALPM_SMBOUTB(sc, SMBHDATA, byte);
441 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
442 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
443
444 error = alpm_wait(sc);
445
446 ALPM_DEBUG(printf("alpm: WRITEB to 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, byte, error));
447 ALPM_UNLOCK(sc);
448
449 return (error);
450 }
451
452 static int
alpm_readb(device_t dev,u_char slave,char cmd,char * byte)453 alpm_readb(device_t dev, u_char slave, char cmd, char *byte)
454 {
455 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
456 int error;
457
458 ALPM_LOCK(sc);
459 alpm_clear(sc);
460 if (!alpm_idle(sc)) {
461 ALPM_UNLOCK(sc);
462 return (SMB_EBUSY);
463 }
464
465 ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
466 ALPM_SMBOUTB(sc, SMBCMD, SMBWRBYTE);
467 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
468 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
469
470 if ((error = alpm_wait(sc)) == SMB_ENOERR)
471 *byte = ALPM_SMBINB(sc, SMBHDATA);
472
473 ALPM_DEBUG(printf("alpm: READB from 0x%x, cmd=0x%x, byte=0x%x, error=0x%x\n", slave, cmd, *byte, error));
474 ALPM_UNLOCK(sc);
475
476 return (error);
477 }
478
479 static int
alpm_writew(device_t dev,u_char slave,char cmd,short word)480 alpm_writew(device_t dev, u_char slave, char cmd, short word)
481 {
482 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
483 int error;
484
485 ALPM_LOCK(sc);
486 alpm_clear(sc);
487 if (!alpm_idle(sc)) {
488 ALPM_UNLOCK(sc);
489 return (SMB_EBUSY);
490 }
491
492 ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
493 ALPM_SMBOUTB(sc, SMBCMD, SMBWRWORD);
494 ALPM_SMBOUTB(sc, SMBHDATA, word & 0x00ff);
495 ALPM_SMBOUTB(sc, SMBHDATB, (word & 0xff00) >> 8);
496 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
497 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
498
499 error = alpm_wait(sc);
500
501 ALPM_DEBUG(printf("alpm: WRITEW to 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, word, error));
502 ALPM_UNLOCK(sc);
503
504 return (error);
505 }
506
507 static int
alpm_readw(device_t dev,u_char slave,char cmd,short * word)508 alpm_readw(device_t dev, u_char slave, char cmd, short *word)
509 {
510 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
511 int error;
512 u_char high, low;
513
514 ALPM_LOCK(sc);
515 alpm_clear(sc);
516 if (!alpm_idle(sc)) {
517 ALPM_UNLOCK(sc);
518 return (SMB_EBUSY);
519 }
520
521 ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
522 ALPM_SMBOUTB(sc, SMBCMD, SMBWRWORD);
523 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
524 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
525
526 if ((error = alpm_wait(sc)) == SMB_ENOERR) {
527 low = ALPM_SMBINB(sc, SMBHDATA);
528 high = ALPM_SMBINB(sc, SMBHDATB);
529
530 *word = ((high & 0xff) << 8) | (low & 0xff);
531 }
532
533 ALPM_DEBUG(printf("alpm: READW from 0x%x, cmd=0x%x, word=0x%x, error=0x%x\n", slave, cmd, *word, error));
534 ALPM_UNLOCK(sc);
535
536 return (error);
537 }
538
539 static int
alpm_bwrite(device_t dev,u_char slave,char cmd,u_char count,char * buf)540 alpm_bwrite(device_t dev, u_char slave, char cmd, u_char count, char *buf)
541 {
542 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
543 u_char i;
544 int error;
545
546 if (count < 1 || count > 32)
547 return (SMB_EINVAL);
548
549 ALPM_LOCK(sc);
550 alpm_clear(sc);
551 if(!alpm_idle(sc)) {
552 ALPM_UNLOCK(sc);
553 return (SMB_EBUSY);
554 }
555
556 ALPM_SMBOUTB(sc, SMBHADDR, slave & ~LSB);
557
558 /* set the cmd and reset the
559 * 32-byte long internal buffer */
560 ALPM_SMBOUTB(sc, SMBCMD, SMBWRBLOCK | SMB_BLK_CLR);
561
562 ALPM_SMBOUTB(sc, SMBHDATA, count);
563
564 /* fill the 32-byte internal buffer */
565 for (i = 0; i < count; i++) {
566 ALPM_SMBOUTB(sc, SMBHBLOCK, buf[i]);
567 DELAY(2);
568 }
569 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
570 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
571
572 error = alpm_wait(sc);
573
574 ALPM_DEBUG(printf("alpm: WRITEBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, count, cmd, error));
575 ALPM_UNLOCK(sc);
576
577 return (error);
578 }
579
580 static int
alpm_bread(device_t dev,u_char slave,char cmd,u_char * count,char * buf)581 alpm_bread(device_t dev, u_char slave, char cmd, u_char *count, char *buf)
582 {
583 struct alpm_softc *sc = (struct alpm_softc *)device_get_softc(dev);
584 u_char data, len, i;
585 int error;
586
587 if (*count < 1 || *count > 32)
588 return (SMB_EINVAL);
589
590 ALPM_LOCK(sc);
591 alpm_clear(sc);
592 if (!alpm_idle(sc)) {
593 ALPM_UNLOCK(sc);
594 return (SMB_EBUSY);
595 }
596
597 ALPM_SMBOUTB(sc, SMBHADDR, slave | LSB);
598
599 /* set the cmd and reset the
600 * 32-byte long internal buffer */
601 ALPM_SMBOUTB(sc, SMBCMD, SMBWRBLOCK | SMB_BLK_CLR);
602
603 ALPM_SMBOUTB(sc, SMBHCMD, cmd);
604 ALPM_SMBOUTB(sc, SMBSTART, 0xff);
605
606 if ((error = alpm_wait(sc)) != SMB_ENOERR)
607 goto error;
608
609 len = ALPM_SMBINB(sc, SMBHDATA);
610
611 /* read the 32-byte internal buffer */
612 for (i = 0; i < len; i++) {
613 data = ALPM_SMBINB(sc, SMBHBLOCK);
614 if (i < *count)
615 buf[i] = data;
616 DELAY(2);
617 }
618 *count = len;
619
620 error:
621 ALPM_DEBUG(printf("alpm: READBLK to 0x%x, count=0x%x, cmd=0x%x, error=0x%x", slave, *count, cmd, error));
622 ALPM_UNLOCK(sc);
623
624 return (error);
625 }
626
627 static device_method_t alpm_methods[] = {
628 /* device interface */
629 DEVMETHOD(device_probe, alpm_probe),
630 DEVMETHOD(device_attach, alpm_attach),
631 DEVMETHOD(device_detach, alpm_detach),
632
633 /* smbus interface */
634 DEVMETHOD(smbus_callback, alpm_callback),
635 DEVMETHOD(smbus_quick, alpm_quick),
636 DEVMETHOD(smbus_sendb, alpm_sendb),
637 DEVMETHOD(smbus_recvb, alpm_recvb),
638 DEVMETHOD(smbus_writeb, alpm_writeb),
639 DEVMETHOD(smbus_readb, alpm_readb),
640 DEVMETHOD(smbus_writew, alpm_writew),
641 DEVMETHOD(smbus_readw, alpm_readw),
642 DEVMETHOD(smbus_bwrite, alpm_bwrite),
643 DEVMETHOD(smbus_bread, alpm_bread),
644 { 0, 0 }
645 };
646
647 static driver_t alpm_driver = {
648 "alpm",
649 alpm_methods,
650 sizeof(struct alpm_softc)
651 };
652
653 DRIVER_MODULE(alpm, pci, alpm_driver, 0, 0);
654 DRIVER_MODULE(smbus, alpm, smbus_driver, 0, 0);
655 MODULE_DEPEND(alpm, pci, 1, 1, 1);
656 MODULE_DEPEND(alpm, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
657 MODULE_VERSION(alpm, 1);
658