Commit | Line | Data |
---|---|---|
e86435eb PF |
1 | /* |
2 | * acerhdf - A driver which monitors the temperature | |
3 | * of the aspire one netbook, turns on/off the fan | |
4 | * as soon as the upper/lower threshold is reached. | |
5 | * | |
6 | * (C) 2009 - Peter Feuerer peter (a) piie.net | |
7 | * http://piie.net | |
8 | * 2009 Borislav Petkov <petkovbb@gmail.com> | |
9 | * | |
10 | * Inspired by and many thanks to: | |
11 | * o acerfand - Rachel Greenham | |
12 | * o acer_ec.pl - Michael Kurz michi.kurz (at) googlemail.com | |
13 | * - Petr Tomasek tomasek (#) etf,cuni,cz | |
14 | * - Carlos Corbacho cathectic (at) gmail.com | |
15 | * o lkml - Matthew Garrett | |
16 | * - Borislav Petkov | |
17 | * - Andreas Mohr | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
32 | */ | |
33 | ||
34 | #define pr_fmt(fmt) "acerhdf: " fmt | |
35 | ||
36 | #include <linux/kernel.h> | |
37 | #include <linux/module.h> | |
38 | #include <linux/fs.h> | |
39 | #include <linux/dmi.h> | |
40 | #include <acpi/acpi_drivers.h> | |
41 | #include <linux/sched.h> | |
42 | #include <linux/thermal.h> | |
43 | #include <linux/platform_device.h> | |
44 | ||
45 | /* | |
46 | * The driver is started with "kernel mode off" by default. That means, the BIOS | |
47 | * is still in control of the fan. In this mode the driver allows to read the | |
48 | * temperature of the cpu and a userspace tool may take over control of the fan. | |
49 | * If the driver is switched to "kernel mode" (e.g. via module parameter) the | |
50 | * driver is in full control of the fan. If you want the module to be started in | |
51 | * kernel mode by default, define the following: | |
52 | */ | |
53 | #undef START_IN_KERNEL_MODE | |
54 | ||
55 | #define DRV_VER "0.5.13" | |
56 | ||
57 | /* | |
58 | * According to the Atom N270 datasheet, | |
59 | * (http://download.intel.com/design/processor/datashts/320032.pdf) the | |
60 | * CPU's optimal operating limits denoted in junction temperature as | |
61 | * measured by the on-die thermal monitor are within 0 <= Tj <= 90. So, | |
62 | * assume 89°C is critical temperature. | |
63 | */ | |
64 | #define ACERHDF_TEMP_CRIT 89 | |
65 | #define ACERHDF_FAN_OFF 0 | |
66 | #define ACERHDF_FAN_AUTO 1 | |
67 | ||
68 | /* | |
69 | * No matter what value the user puts into the fanon variable, turn on the fan | |
70 | * at 80 degree Celsius to prevent hardware damage | |
71 | */ | |
72 | #define ACERHDF_MAX_FANON 80 | |
73 | ||
74 | /* | |
75 | * Maximum interval between two temperature checks is 15 seconds, as the die | |
76 | * can get hot really fast under heavy load (plus we shouldn't forget about | |
77 | * possible impact of _external_ aggressive sources such as heaters, sun etc.) | |
78 | */ | |
79 | #define ACERHDF_MAX_INTERVAL 15 | |
80 | ||
81 | #ifdef START_IN_KERNEL_MODE | |
82 | static int kernelmode = 1; | |
83 | #else | |
84 | static int kernelmode; | |
85 | #endif | |
86 | ||
87 | static unsigned int interval = 10; | |
88 | static unsigned int fanon = 63; | |
89 | static unsigned int fanoff = 58; | |
90 | static unsigned int verbose; | |
91 | static unsigned int fanstate = ACERHDF_FAN_AUTO; | |
92 | static char force_bios[16]; | |
93 | static unsigned int prev_interval; | |
94 | struct thermal_zone_device *thz_dev; | |
95 | struct thermal_cooling_device *cl_dev; | |
96 | struct platform_device *acerhdf_dev; | |
97 | ||
98 | module_param(kernelmode, uint, 0); | |
99 | MODULE_PARM_DESC(kernelmode, "Kernel mode fan control on / off"); | |
100 | module_param(interval, uint, 0600); | |
101 | MODULE_PARM_DESC(interval, "Polling interval of temperature check"); | |
102 | module_param(fanon, uint, 0600); | |
103 | MODULE_PARM_DESC(fanon, "Turn the fan on above this temperature"); | |
104 | module_param(fanoff, uint, 0600); | |
105 | MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature"); | |
106 | module_param(verbose, uint, 0600); | |
107 | MODULE_PARM_DESC(verbose, "Enable verbose dmesg output"); | |
108 | module_param_string(force_bios, force_bios, 16, 0); | |
109 | MODULE_PARM_DESC(force_bios, "Force BIOS version and omit BIOS check"); | |
110 | ||
111 | /* BIOS settings */ | |
112 | struct bios_settings_t { | |
113 | const char *vendor; | |
114 | const char *version; | |
115 | unsigned char fanreg; | |
116 | unsigned char tempreg; | |
117 | unsigned char fancmd[2]; /* fan off and auto commands */ | |
118 | }; | |
119 | ||
120 | /* Register addresses and values for different BIOS versions */ | |
121 | static const struct bios_settings_t bios_tbl[] = { | |
122 | {"Acer", "v0.3109", 0x55, 0x58, {0x1f, 0x00} }, | |
123 | {"Acer", "v0.3114", 0x55, 0x58, {0x1f, 0x00} }, | |
124 | {"Acer", "v0.3301", 0x55, 0x58, {0xaf, 0x00} }, | |
125 | {"Acer", "v0.3304", 0x55, 0x58, {0xaf, 0x00} }, | |
126 | {"Acer", "v0.3305", 0x55, 0x58, {0xaf, 0x00} }, | |
127 | {"Acer", "v0.3308", 0x55, 0x58, {0x21, 0x00} }, | |
128 | {"Acer", "v0.3309", 0x55, 0x58, {0x21, 0x00} }, | |
129 | {"Acer", "v0.3310", 0x55, 0x58, {0x21, 0x00} }, | |
130 | {"Gateway", "v0.3103", 0x55, 0x58, {0x21, 0x00} }, | |
131 | {"Packard Bell", "v0.3105", 0x55, 0x58, {0x21, 0x00} }, | |
132 | {"", "", 0, 0, {0, 0} } | |
133 | }; | |
134 | ||
135 | static const struct bios_settings_t *bios_cfg __read_mostly; | |
136 | ||
137 | ||
138 | static int acerhdf_get_temp(int *temp) | |
139 | { | |
140 | u8 read_temp; | |
141 | ||
142 | if (ec_read(bios_cfg->tempreg, &read_temp)) | |
143 | return -EINVAL; | |
144 | ||
145 | *temp = read_temp; | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static int acerhdf_get_fanstate(int *state) | |
151 | { | |
152 | u8 fan; | |
153 | bool tmp; | |
154 | ||
155 | if (ec_read(bios_cfg->fanreg, &fan)) | |
156 | return -EINVAL; | |
157 | ||
158 | tmp = (fan == bios_cfg->fancmd[ACERHDF_FAN_OFF]); | |
159 | *state = tmp ? ACERHDF_FAN_OFF : ACERHDF_FAN_AUTO; | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | static void acerhdf_change_fanstate(int state) | |
165 | { | |
166 | unsigned char cmd; | |
167 | ||
168 | if (verbose) | |
169 | pr_notice("fan %s\n", (state == ACERHDF_FAN_OFF) ? | |
170 | "OFF" : "ON"); | |
171 | ||
172 | if ((state != ACERHDF_FAN_OFF) && (state != ACERHDF_FAN_AUTO)) { | |
173 | pr_err("invalid fan state %d requested, setting to auto!\n", | |
174 | state); | |
175 | state = ACERHDF_FAN_AUTO; | |
176 | } | |
177 | ||
178 | cmd = bios_cfg->fancmd[state]; | |
179 | fanstate = state; | |
180 | ||
181 | ec_write(bios_cfg->fanreg, cmd); | |
182 | } | |
183 | ||
184 | static void acerhdf_check_param(struct thermal_zone_device *thermal) | |
185 | { | |
186 | if (fanon > ACERHDF_MAX_FANON) { | |
187 | pr_err("fanon temperature too high, set to %d\n", | |
188 | ACERHDF_MAX_FANON); | |
189 | fanon = ACERHDF_MAX_FANON; | |
190 | } | |
191 | ||
192 | if (kernelmode && prev_interval != interval) { | |
193 | if (interval > ACERHDF_MAX_INTERVAL) { | |
194 | pr_err("interval too high, set to %d\n", | |
195 | ACERHDF_MAX_INTERVAL); | |
196 | interval = ACERHDF_MAX_INTERVAL; | |
197 | } | |
198 | if (verbose) | |
199 | pr_notice("interval changed to: %d\n", | |
200 | interval); | |
201 | thermal->polling_delay = interval*1000; | |
202 | prev_interval = interval; | |
203 | } | |
204 | } | |
205 | ||
206 | /* | |
207 | * This is the thermal zone callback which does the delayed polling of the fan | |
208 | * state. We do check /sysfs-originating settings here in acerhdf_check_param() | |
209 | * as late as the polling interval is since we can't do that in the respective | |
210 | * accessors of the module parameters. | |
211 | */ | |
212 | static int acerhdf_get_ec_temp(struct thermal_zone_device *thermal, | |
213 | unsigned long *t) | |
214 | { | |
215 | int temp, err = 0; | |
216 | ||
217 | acerhdf_check_param(thermal); | |
218 | ||
219 | err = acerhdf_get_temp(&temp); | |
220 | if (err) | |
221 | return err; | |
222 | ||
223 | if (verbose) | |
224 | pr_notice("temp %d\n", temp); | |
225 | ||
226 | *t = temp; | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int acerhdf_bind(struct thermal_zone_device *thermal, | |
231 | struct thermal_cooling_device *cdev) | |
232 | { | |
233 | /* if the cooling device is the one from acerhdf bind it */ | |
234 | if (cdev != cl_dev) | |
235 | return 0; | |
236 | ||
237 | if (thermal_zone_bind_cooling_device(thermal, 0, cdev)) { | |
238 | pr_err("error binding cooling dev\n"); | |
239 | return -EINVAL; | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static int acerhdf_unbind(struct thermal_zone_device *thermal, | |
245 | struct thermal_cooling_device *cdev) | |
246 | { | |
247 | if (cdev != cl_dev) | |
248 | return 0; | |
249 | ||
250 | if (thermal_zone_unbind_cooling_device(thermal, 0, cdev)) { | |
251 | pr_err("error unbinding cooling dev\n"); | |
252 | return -EINVAL; | |
253 | } | |
254 | return 0; | |
255 | } | |
256 | ||
257 | static inline void acerhdf_revert_to_bios_mode(void) | |
258 | { | |
259 | acerhdf_change_fanstate(ACERHDF_FAN_AUTO); | |
260 | kernelmode = 0; | |
261 | if (thz_dev) | |
262 | thz_dev->polling_delay = 0; | |
263 | pr_notice("kernel mode fan control OFF\n"); | |
264 | } | |
265 | static inline void acerhdf_enable_kernelmode(void) | |
266 | { | |
267 | kernelmode = 1; | |
268 | ||
269 | thz_dev->polling_delay = interval*1000; | |
270 | thermal_zone_device_update(thz_dev); | |
271 | pr_notice("kernel mode fan control ON\n"); | |
272 | } | |
273 | ||
274 | static int acerhdf_get_mode(struct thermal_zone_device *thermal, | |
275 | enum thermal_device_mode *mode) | |
276 | { | |
277 | if (verbose) | |
278 | pr_notice("kernel mode fan control %d\n", kernelmode); | |
279 | ||
280 | *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED | |
281 | : THERMAL_DEVICE_DISABLED; | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | /* | |
287 | * set operation mode; | |
288 | * enabled: the thermal layer of the kernel takes care about | |
289 | * the temperature and the fan. | |
290 | * disabled: the BIOS takes control of the fan. | |
291 | */ | |
292 | static int acerhdf_set_mode(struct thermal_zone_device *thermal, | |
293 | enum thermal_device_mode mode) | |
294 | { | |
295 | if (mode == THERMAL_DEVICE_DISABLED && kernelmode) | |
296 | acerhdf_revert_to_bios_mode(); | |
297 | else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode) | |
298 | acerhdf_enable_kernelmode(); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | static int acerhdf_get_trip_type(struct thermal_zone_device *thermal, int trip, | |
304 | enum thermal_trip_type *type) | |
305 | { | |
306 | if (trip == 0) | |
307 | *type = THERMAL_TRIP_ACTIVE; | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static int acerhdf_get_trip_temp(struct thermal_zone_device *thermal, int trip, | |
313 | unsigned long *temp) | |
314 | { | |
315 | if (trip == 0) | |
316 | *temp = fanon; | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static int acerhdf_get_crit_temp(struct thermal_zone_device *thermal, | |
322 | unsigned long *temperature) | |
323 | { | |
324 | *temperature = ACERHDF_TEMP_CRIT; | |
325 | return 0; | |
326 | } | |
327 | ||
328 | /* bind callback functions to thermalzone */ | |
329 | struct thermal_zone_device_ops acerhdf_dev_ops = { | |
330 | .bind = acerhdf_bind, | |
331 | .unbind = acerhdf_unbind, | |
332 | .get_temp = acerhdf_get_ec_temp, | |
333 | .get_mode = acerhdf_get_mode, | |
334 | .set_mode = acerhdf_set_mode, | |
335 | .get_trip_type = acerhdf_get_trip_type, | |
336 | .get_trip_temp = acerhdf_get_trip_temp, | |
337 | .get_crit_temp = acerhdf_get_crit_temp, | |
338 | }; | |
339 | ||
340 | ||
341 | /* | |
342 | * cooling device callback functions | |
343 | * get maximal fan cooling state | |
344 | */ | |
345 | static int acerhdf_get_max_state(struct thermal_cooling_device *cdev, | |
346 | unsigned long *state) | |
347 | { | |
348 | *state = 1; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int acerhdf_get_cur_state(struct thermal_cooling_device *cdev, | |
354 | unsigned long *state) | |
355 | { | |
356 | int err = 0, tmp; | |
357 | ||
358 | err = acerhdf_get_fanstate(&tmp); | |
359 | if (err) | |
360 | return err; | |
361 | ||
362 | *state = (tmp == ACERHDF_FAN_AUTO) ? 1 : 0; | |
363 | return 0; | |
364 | } | |
365 | ||
366 | /* change current fan state - is overwritten when running in kernel mode */ | |
367 | static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev, | |
368 | unsigned long state) | |
369 | { | |
370 | int cur_temp, cur_state, err = 0; | |
371 | ||
372 | if (!kernelmode) | |
373 | return 0; | |
374 | ||
375 | err = acerhdf_get_temp(&cur_temp); | |
376 | if (err) { | |
377 | pr_err("error reading temperature, hand off control to BIOS\n"); | |
378 | goto err_out; | |
379 | } | |
380 | ||
381 | err = acerhdf_get_fanstate(&cur_state); | |
382 | if (err) { | |
383 | pr_err("error reading fan state, hand off control to BIOS\n"); | |
384 | goto err_out; | |
385 | } | |
386 | ||
387 | if (state == 0) { | |
388 | /* turn fan off only if below fanoff temperature */ | |
389 | if ((cur_state == ACERHDF_FAN_AUTO) && | |
390 | (cur_temp < fanoff)) | |
391 | acerhdf_change_fanstate(ACERHDF_FAN_OFF); | |
392 | } else { | |
393 | if (cur_state == ACERHDF_FAN_OFF) | |
394 | acerhdf_change_fanstate(ACERHDF_FAN_AUTO); | |
395 | } | |
396 | return 0; | |
397 | ||
398 | err_out: | |
399 | acerhdf_revert_to_bios_mode(); | |
400 | return -EINVAL; | |
401 | } | |
402 | ||
403 | /* bind fan callbacks to fan device */ | |
404 | struct thermal_cooling_device_ops acerhdf_cooling_ops = { | |
405 | .get_max_state = acerhdf_get_max_state, | |
406 | .get_cur_state = acerhdf_get_cur_state, | |
407 | .set_cur_state = acerhdf_set_cur_state, | |
408 | }; | |
409 | ||
410 | /* suspend / resume functionality */ | |
411 | static int acerhdf_suspend(struct platform_device *dev, pm_message_t state) | |
412 | { | |
413 | if (kernelmode) | |
414 | acerhdf_change_fanstate(ACERHDF_FAN_AUTO); | |
415 | ||
416 | if (verbose) | |
417 | pr_notice("going suspend\n"); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | static int acerhdf_resume(struct platform_device *device) | |
423 | { | |
424 | if (verbose) | |
425 | pr_notice("resuming\n"); | |
426 | ||
427 | return 0; | |
428 | } | |
429 | ||
430 | static int __devinit acerhdf_probe(struct platform_device *device) | |
431 | { | |
432 | return 0; | |
433 | } | |
434 | ||
435 | static int acerhdf_remove(struct platform_device *device) | |
436 | { | |
437 | return 0; | |
438 | } | |
439 | ||
440 | struct platform_driver acerhdf_drv = { | |
441 | .driver = { | |
442 | .name = "acerhdf", | |
443 | .owner = THIS_MODULE, | |
444 | }, | |
445 | .probe = acerhdf_probe, | |
446 | .remove = acerhdf_remove, | |
447 | .suspend = acerhdf_suspend, | |
448 | .resume = acerhdf_resume, | |
449 | }; | |
450 | ||
451 | ||
452 | /* check hardware */ | |
453 | static int acerhdf_check_hardware(void) | |
454 | { | |
455 | char const *vendor, *version, *product; | |
456 | int i; | |
457 | ||
458 | /* get BIOS data */ | |
459 | vendor = dmi_get_system_info(DMI_SYS_VENDOR); | |
460 | version = dmi_get_system_info(DMI_BIOS_VERSION); | |
461 | product = dmi_get_system_info(DMI_PRODUCT_NAME); | |
462 | ||
463 | pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER); | |
464 | ||
465 | if (!force_bios[0]) { | |
466 | if (strncmp(product, "AO", 2)) { | |
467 | pr_err("no Aspire One hardware found\n"); | |
468 | return -EINVAL; | |
469 | } | |
470 | } else { | |
471 | pr_info("forcing BIOS version: %s\n", version); | |
472 | version = force_bios; | |
473 | kernelmode = 0; | |
474 | } | |
475 | ||
476 | if (verbose) | |
477 | pr_info("BIOS info: %s %s, product: %s\n", | |
478 | vendor, version, product); | |
479 | ||
480 | /* search BIOS version and vendor in BIOS settings table */ | |
481 | for (i = 0; bios_tbl[i].version[0]; i++) { | |
482 | if (!strcmp(bios_tbl[i].vendor, vendor) && | |
483 | !strcmp(bios_tbl[i].version, version)) { | |
484 | bios_cfg = &bios_tbl[i]; | |
485 | break; | |
486 | } | |
487 | } | |
488 | ||
489 | if (!bios_cfg) { | |
490 | pr_err("unknown (unsupported) BIOS version %s/%s, " | |
491 | "please report, aborting!\n", vendor, version); | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
495 | /* | |
496 | * if started with kernel mode off, prevent the kernel from switching | |
497 | * off the fan | |
498 | */ | |
499 | if (!kernelmode) { | |
500 | pr_notice("Fan control off, to enable do:\n"); | |
501 | pr_notice("echo -n \"enabled\" > " | |
502 | "/sys/class/thermal/thermal_zone0/mode\n"); | |
503 | } | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | static int acerhdf_register_platform(void) | |
509 | { | |
510 | int err = 0; | |
511 | ||
512 | err = platform_driver_register(&acerhdf_drv); | |
513 | if (err) | |
514 | return err; | |
515 | ||
516 | acerhdf_dev = platform_device_alloc("acerhdf", -1); | |
517 | platform_device_add(acerhdf_dev); | |
518 | ||
519 | return 0; | |
520 | } | |
521 | ||
522 | static void acerhdf_unregister_platform(void) | |
523 | { | |
524 | if (!acerhdf_dev) | |
525 | return; | |
526 | ||
527 | platform_device_del(acerhdf_dev); | |
528 | platform_driver_unregister(&acerhdf_drv); | |
529 | } | |
530 | ||
531 | static int acerhdf_register_thermal(void) | |
532 | { | |
533 | cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL, | |
534 | &acerhdf_cooling_ops); | |
535 | ||
536 | if (IS_ERR(cl_dev)) | |
537 | return -EINVAL; | |
538 | ||
539 | thz_dev = thermal_zone_device_register("acerhdf", 1, NULL, | |
540 | &acerhdf_dev_ops, 0, 0, 0, | |
541 | (kernelmode) ? interval*1000 : 0); | |
542 | if (IS_ERR(thz_dev)) | |
543 | return -EINVAL; | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | static void acerhdf_unregister_thermal(void) | |
549 | { | |
550 | if (cl_dev) { | |
551 | thermal_cooling_device_unregister(cl_dev); | |
552 | cl_dev = NULL; | |
553 | } | |
554 | ||
555 | if (thz_dev) { | |
556 | thermal_zone_device_unregister(thz_dev); | |
557 | thz_dev = NULL; | |
558 | } | |
559 | } | |
560 | ||
561 | static int __init acerhdf_init(void) | |
562 | { | |
563 | int err = 0; | |
564 | ||
565 | err = acerhdf_check_hardware(); | |
566 | if (err) | |
567 | goto out_err; | |
568 | ||
569 | err = acerhdf_register_platform(); | |
570 | if (err) | |
571 | goto err_unreg; | |
572 | ||
573 | err = acerhdf_register_thermal(); | |
574 | if (err) | |
575 | goto err_unreg; | |
576 | ||
577 | return 0; | |
578 | ||
579 | err_unreg: | |
580 | acerhdf_unregister_thermal(); | |
581 | acerhdf_unregister_platform(); | |
582 | ||
583 | out_err: | |
584 | return -ENODEV; | |
585 | } | |
586 | ||
587 | static void __exit acerhdf_exit(void) | |
588 | { | |
589 | acerhdf_change_fanstate(ACERHDF_FAN_AUTO); | |
590 | acerhdf_unregister_thermal(); | |
591 | acerhdf_unregister_platform(); | |
592 | } | |
593 | ||
594 | MODULE_LICENSE("GPL"); | |
595 | MODULE_AUTHOR("Peter Feuerer"); | |
596 | MODULE_DESCRIPTION("Aspire One temperature and fan driver"); | |
597 | MODULE_ALIAS("dmi:*:*Acer*:*:"); | |
598 | MODULE_ALIAS("dmi:*:*Gateway*:*:"); | |
599 | MODULE_ALIAS("dmi:*:*Packard Bell*:*:"); | |
600 | ||
601 | module_init(acerhdf_init); | |
602 | module_exit(acerhdf_exit); |