xref: /freebsd/sys/dev/acpi_support/acpi_fujitsu.c (revision a03411e84728e9b267056fd31c7d1d9d1dc1b01e)
1 /*-
2  * Copyright (c) 2002 Sean Bullington <seanATstalker.org>
3  *               2003-2008 Anish Mistry <amistry@am-productions.biz>
4  *               2004 Mark Santcroos <marks@ripe.net>
5  * All Rights Reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  */
29 
30 #include <sys/cdefs.h>
31 #include "opt_acpi.h"
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/bus.h>
35 #include <sys/module.h>
36 #include <sys/sysctl.h>
37 
38 #include <contrib/dev/acpica/include/acpi.h>
39 #include <contrib/dev/acpica/include/accommon.h>
40 
41 #include <dev/acpica/acpivar.h>
42 
43 /* Hooks for the ACPI CA debugging infrastructure */
44 #define _COMPONENT	ACPI_OEM
45 ACPI_MODULE_NAME("Fujitsu")
46 
47 /* Change and update bits for the hotkeys */
48 #define VOLUME_MUTE_BIT		0x40000000
49 
50 /* Values of settings */
51 #define GENERAL_SETTING_BITS	0x0fffffff
52 #define MOUSE_SETTING_BITS	GENERAL_SETTING_BITS
53 #define VOLUME_SETTING_BITS	GENERAL_SETTING_BITS
54 #define BRIGHTNESS_SETTING_BITS	GENERAL_SETTING_BITS
55 
56 /* Possible state changes */
57 /*
58  * These are NOT arbitrary values.  They are the
59  * GHKS return value from the device that says which
60  * hotkey is active.  They should match up with a bit
61  * from the GSIF bitmask.
62  */
63 #define BRIGHT_CHANGED	0x01
64 #define VOLUME_CHANGED	0x04
65 #define MOUSE_CHANGED	0x08
66 /*
67  * It is unknown which hotkey this bit is supposed to indicate, but
68  * according to values from GSIF this is a valid flag.
69  */
70 #define UNKNOWN_CHANGED	0x10
71 
72 /* sysctl values */
73 #define FN_MUTE			0
74 #define FN_POINTER_ENABLE	1
75 #define FN_LCD_BRIGHTNESS	2
76 #define FN_VOLUME		3
77 
78 /* Methods */
79 #define METHOD_GBLL	1
80 #define METHOD_GMOU	2
81 #define METHOD_GVOL	3
82 #define METHOD_MUTE	4
83 #define METHOD_RBLL	5
84 #define METHOD_RVOL	6
85 #define METHOD_GSIF	7
86 #define METHOD_GHKS	8
87 #define METHOD_GBLS	9
88 
89 /* Notify event */
90 #define	ACPI_NOTIFY_STATUS_CHANGED	0x80
91 
92 /*
93  * Holds a control method name and its associated integer value.
94  * Only used for no-argument control methods which return a value.
95  */
96 struct int_nameval {
97 	char	*name;
98 	int	value;
99 	int	exists;
100 };
101 
102 /*
103  * Driver extension for the FUJITSU ACPI driver.
104  */
105 struct acpi_fujitsu_softc {
106 	device_t	dev;
107 	ACPI_HANDLE	handle;
108 
109 	/* Control methods */
110 	struct int_nameval	_sta,	/* unused */
111 				gbll,	/* brightness */
112 				gbls,	/* get brightness state */
113 				ghks,	/* hotkey selector */
114 				gbuf,	/* unused (buffer?) */
115 				gmou,	/* mouse */
116 				gsif,	/* function key bitmask */
117 				gvol,	/* volume */
118 				rbll,	/* number of brightness levels (radix) */
119 				rvol;	/* number of volume levels (radix) */
120 
121 	/* State variables */
122 	uint8_t		bIsMuted;	/* Is volume muted */
123 	uint8_t		bIntPtrEnabled;	/* Is internal ptr enabled */
124 	uint32_t	lastValChanged;	/* The last value updated */
125 
126 	/* sysctl tree */
127 	struct sysctl_ctx_list	sysctl_ctx;
128 	struct sysctl_oid	*sysctl_tree;
129 };
130 
131 /* Driver entry point forward declarations. */
132 static int	acpi_fujitsu_probe(device_t dev);
133 static int	acpi_fujitsu_attach(device_t dev);
134 static int	acpi_fujitsu_detach(device_t dev);
135 static int	acpi_fujitsu_suspend(device_t dev);
136 static int	acpi_fujitsu_resume(device_t dev);
137 
138 static void	acpi_fujitsu_notify_status_changed(void *arg);
139 static void	acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context);
140 static int	acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS);
141 
142 /* Utility function declarations */
143 static uint8_t acpi_fujitsu_update(struct acpi_fujitsu_softc *sc);
144 static uint8_t acpi_fujitsu_init(struct acpi_fujitsu_softc *sc);
145 static uint8_t acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc);
146 
147 /* Driver/Module specific structure definitions. */
148 static device_method_t acpi_fujitsu_methods[] = {
149 	/* Device interface */
150 	DEVMETHOD(device_probe,		acpi_fujitsu_probe),
151 	DEVMETHOD(device_attach,	acpi_fujitsu_attach),
152 	DEVMETHOD(device_detach,	acpi_fujitsu_detach),
153 	DEVMETHOD(device_suspend,	acpi_fujitsu_suspend),
154 	DEVMETHOD(device_resume,	acpi_fujitsu_resume),
155 
156 	DEVMETHOD_END
157 };
158 
159 static driver_t acpi_fujitsu_driver = {
160 	"acpi_fujitsu",
161 	acpi_fujitsu_methods,
162 	sizeof(struct acpi_fujitsu_softc),
163 };
164 
165 /* Prototype for function hotkeys for getting/setting a value. */
166 static int acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method);
167 static int acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value);
168 
169 static char *fujitsu_ids[] = { "FUJ02B1", NULL };
170 
171 ACPI_SERIAL_DECL(fujitsu, "Fujitsu Function Hotkeys");
172 
173 /* sysctl names and function calls */
174 static struct {
175 	char		*name;
176 	int		method;
177 	char		*description;
178 } sysctl_table[] = {
179 	{
180 		.name		= "mute",
181 		.method		= METHOD_MUTE,
182 		.description	= "Speakers/headphones mute status"
183 	},
184 	{
185 		.name		= "pointer_enable",
186 		.method		= METHOD_GMOU,
187 		.description	= "Enable and disable the internal pointer"
188 	},
189 	{
190 		.name		= "lcd_brightness",
191 		.method		= METHOD_GBLL,
192 		.description	= "Brightness level of the LCD panel"
193 	},
194 	{
195 		.name		= "lcd_brightness",
196 		.method		= METHOD_GBLS,
197 		.description	= "Brightness level of the LCD panel"
198 	},
199 	{
200 		.name		= "volume",
201 		.method		= METHOD_GVOL,
202 		.description	= "Speakers/headphones volume level"
203 	},
204 	{
205 		.name		= "volume_radix",
206 		.method		= METHOD_RVOL,
207 		.description	= "Number of volume level steps"
208 	},
209 	{
210 		.name		= "lcd_brightness_radix",
211 		.method		= METHOD_RBLL,
212 		.description	= "Number of brightness level steps"
213 	},
214 	{ NULL, 0, NULL }
215 };
216 
217 DRIVER_MODULE(acpi_fujitsu, acpi, acpi_fujitsu_driver, 0, 0);
218 MODULE_DEPEND(acpi_fujitsu, acpi, 1, 1, 1);
219 MODULE_VERSION(acpi_fujitsu, 1);
220 
221 static int
222 acpi_fujitsu_probe(device_t dev)
223 {
224 	char *name;
225 	char buffer[64];
226 	int rv;
227 
228 	rv =  ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids, &name);
229 	if (acpi_disabled("fujitsu") || rv > 0 || device_get_unit(dev) > 1)
230 		return (ENXIO);
231 	sprintf(buffer, "Fujitsu Function Hotkeys %s", name);
232 	device_set_desc_copy(dev, buffer);
233 
234 	return (rv);
235 }
236 
237 static int
238 acpi_fujitsu_attach(device_t dev)
239 {
240 	struct acpi_fujitsu_softc *sc;
241 
242 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
243 
244 	sc = device_get_softc(dev);
245 	sc->dev = dev;
246 	sc->handle = acpi_get_handle(dev);
247 
248 	/* Install notification handler */
249 	AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
250 	    acpi_fujitsu_notify_handler, sc);
251 
252 	/* Snag our default values for the hotkeys / hotkey states. */
253 	ACPI_SERIAL_BEGIN(fujitsu);
254 	if (!acpi_fujitsu_init(sc))
255 		device_printf(dev, "Couldn't initialize hotkey states!\n");
256 	ACPI_SERIAL_END(fujitsu);
257 
258 	return (0);
259 }
260 
261 /*
262  * Called when the system is being suspended, simply
263  * set an event to be signalled when we wake up.
264  */
265 static int
266 acpi_fujitsu_suspend(device_t dev)
267 {
268 
269 	return (0);
270 }
271 
272 static int
273 acpi_fujitsu_resume(device_t dev)
274 {
275 	struct acpi_fujitsu_softc   *sc;
276 	ACPI_STATUS		    status;
277 
278 	sc = device_get_softc(dev);
279 
280 	/*
281 	 * The pointer needs to be re-enabled for
282 	 * some revisions of the P series (2120).
283 	 */
284 	ACPI_SERIAL_BEGIN(fujitsu);
285 
286 	if(sc->gmou.exists) {
287 		status = acpi_SetInteger(sc->handle, "SMOU", 1);
288 		if (ACPI_FAILURE(status))
289 			device_printf(sc->dev, "Couldn't enable pointer\n");
290 	}
291 	ACPI_SERIAL_END(fujitsu);
292 
293 	return (0);
294 }
295 
296 static void
297 acpi_fujitsu_notify_status_changed(void *arg)
298 {
299 	struct acpi_fujitsu_softc *sc;
300 
301 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
302 
303 	sc = (struct acpi_fujitsu_softc *)arg;
304 
305 	/*
306 	 * Since our notify function is called, we know something has
307 	 * happened.  So the only reason for acpi_fujitsu_update to fail
308 	 * is if we can't find what has changed or an error occurs.
309 	 */
310 	ACPI_SERIAL_BEGIN(fujitsu);
311 	acpi_fujitsu_update(sc);
312 	ACPI_SERIAL_END(fujitsu);
313 }
314 
315 static void
316 acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context)
317 {
318 	struct acpi_fujitsu_softc *sc;
319 
320 	ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
321 
322 	sc = (struct acpi_fujitsu_softc *)context;
323 
324 	switch (notify) {
325 	case ACPI_NOTIFY_STATUS_CHANGED:
326 		AcpiOsExecute(OSL_NOTIFY_HANDLER,
327 		    acpi_fujitsu_notify_status_changed, sc);
328 		break;
329 	default:
330 		/* unknown notification value */
331 		break;
332 	}
333 }
334 
335 static int
336 acpi_fujitsu_detach(device_t dev)
337 {
338 	struct acpi_fujitsu_softc *sc;
339 
340 	sc = device_get_softc(dev);
341 	AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
342 	   acpi_fujitsu_notify_handler);
343 
344 	sysctl_ctx_free(&sc->sysctl_ctx);
345 
346 	return (0);
347 }
348 
349 /*
350  * Initializes the names of the ACPI control methods and grabs
351  * the current state of all of the ACPI hotkeys into the softc.
352  */
353 static uint8_t
354 acpi_fujitsu_init(struct acpi_fujitsu_softc *sc)
355 {
356 	struct acpi_softc *acpi_sc;
357 	int i, exists;
358 
359 	ACPI_SERIAL_ASSERT(fujitsu);
360 
361 	/* Setup all of the names for each control method */
362 	sc->_sta.name = "_STA";
363 	sc->gbll.name = "GBLL";
364 	sc->gbls.name = "GBLS";
365 	sc->ghks.name = "GHKS";
366 	sc->gmou.name = "GMOU";
367 	sc->gsif.name = "GSIF";
368 	sc->gvol.name = "GVOL";
369 	sc->ghks.name = "GHKS";
370 	sc->gsif.name = "GSIF";
371 	sc->rbll.name = "RBLL";
372 	sc->rvol.name = "RVOL";
373 
374 	/* Determine what hardware functionality is available */
375 	acpi_fujitsu_check_hardware(sc);
376 
377 	/* Build the sysctl tree */
378 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
379 	sysctl_ctx_init(&sc->sysctl_ctx);
380 	sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
381 	    SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
382 	    OID_AUTO, "fujitsu", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
383 
384 	for (i = 0; sysctl_table[i].name != NULL; i++) {
385 		switch(sysctl_table[i].method) {
386 			case METHOD_GMOU:
387 				exists = sc->gmou.exists;
388 				break;
389 			case METHOD_GBLL:
390 				exists = sc->gbll.exists;
391 				break;
392 			case METHOD_GBLS:
393 				exists = sc->gbls.exists;
394 				break;
395 			case METHOD_GVOL:
396 			case METHOD_MUTE:
397 				exists = sc->gvol.exists;
398 				break;
399 			case METHOD_RVOL:
400 				exists = sc->rvol.exists;
401 				break;
402 			case METHOD_RBLL:
403 				exists = sc->rbll.exists;
404 				break;
405 			default:
406 				/* Allow by default */
407 				exists = 1;
408 				break;
409 		}
410 		if(!exists)
411 			continue;
412 		SYSCTL_ADD_PROC(&sc->sysctl_ctx,
413 		    SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
414 		    sysctl_table[i].name,
415 		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY |
416 		    CTLFLAG_MPSAFE, sc, i, acpi_fujitsu_sysctl, "I",
417 		    sysctl_table[i].description);
418 	}
419 
420 	/* Set the hotkeys to their initial states */
421 	if (!acpi_fujitsu_update(sc)) {
422 		device_printf(sc->dev, "Couldn't init hotkey states\n");
423 		return (FALSE);
424 	}
425 
426 	return (TRUE);
427 }
428 
429 static int
430 acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS)
431 {
432 	struct acpi_fujitsu_softc	*sc;
433 	int				method;
434 	int				arg;
435 	int				function_num, error = 0;
436 
437 	sc = (struct acpi_fujitsu_softc *)oidp->oid_arg1;
438 	function_num = oidp->oid_arg2;
439 	method = sysctl_table[function_num].method;
440 
441 	ACPI_SERIAL_BEGIN(fujitsu);
442 
443 	/* Get the current value */
444 	arg = acpi_fujitsu_method_get(sc, method);
445 	error = sysctl_handle_int(oidp, &arg, 0, req);
446 
447 	if (error != 0 || req->newptr == NULL)
448 		goto out;
449 
450 	/* Update the value */
451 	error = acpi_fujitsu_method_set(sc, method, arg);
452 
453 out:
454 	ACPI_SERIAL_END(fujitsu);
455 	return (error);
456 }
457 
458 static int
459 acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method)
460 {
461 	struct int_nameval	nv;
462 	ACPI_STATUS		status;
463 
464 	ACPI_SERIAL_ASSERT(fujitsu);
465 
466 	switch (method) {
467 		case METHOD_GBLL:
468 			nv = sc->gbll;
469 			break;
470 		case METHOD_GBLS:
471 			nv = sc->gbls;
472 			break;
473 		case METHOD_GMOU:
474 			nv = sc->gmou;
475 			break;
476 		case METHOD_GVOL:
477 		case METHOD_MUTE:
478 			nv = sc->gvol;
479 			break;
480 		case METHOD_GHKS:
481 			nv = sc->ghks;
482 			break;
483 		case METHOD_GSIF:
484 			nv = sc->gsif;
485 			break;
486 		case METHOD_RBLL:
487 			nv = sc->rbll;
488 			break;
489 		case METHOD_RVOL:
490 			nv = sc->rvol;
491 			break;
492 		default:
493 			return (FALSE);
494 	}
495 
496 	if(!nv.exists)
497 		return (EINVAL);
498 
499 	status = acpi_GetInteger(sc->handle, nv.name, &nv.value);
500 	if (ACPI_FAILURE(status)) {
501 		device_printf(sc->dev, "Couldn't query method (%s)\n", nv.name);
502 		return (FALSE);
503 	}
504 
505 	if (method == METHOD_MUTE) {
506 		sc->bIsMuted = (uint8_t)((nv.value & VOLUME_MUTE_BIT) != 0);
507 		return (sc->bIsMuted);
508 	}
509 
510 	nv.value &= GENERAL_SETTING_BITS;
511 	return (nv.value);
512 }
513 
514 static int
515 acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value)
516 {
517 	struct int_nameval	nv;
518 	ACPI_STATUS		status;
519 	char			*control;
520 	int			changed;
521 
522 	ACPI_SERIAL_ASSERT(fujitsu);
523 
524 	switch (method) {
525 		case METHOD_GBLL:
526 			changed = BRIGHT_CHANGED;
527 			control = "SBLL";
528 			nv = sc->gbll;
529 			break;
530 		case METHOD_GBLS:
531 			changed = BRIGHT_CHANGED;
532 			control = "SBL2";
533 			nv = sc->gbls;
534 			break;
535 		case METHOD_GMOU:
536 			changed = MOUSE_CHANGED;
537 			control = "SMOU";
538 			nv = sc->gmou;
539 			break;
540 		case METHOD_GVOL:
541 		case METHOD_MUTE:
542 			changed = VOLUME_CHANGED;
543 			control = "SVOL";
544 			nv = sc->gvol;
545 			break;
546 		default:
547 			return (EINVAL);
548 	}
549 
550 	if(!nv.exists)
551 		return (EINVAL);
552 
553 	if (method == METHOD_MUTE) {
554 		if (value == 1)
555 			value = nv.value | VOLUME_MUTE_BIT;
556 		else if (value == 0)
557 			value = nv.value & ~VOLUME_MUTE_BIT;
558 		else
559 			return (EINVAL);
560 	}
561 
562 	status = acpi_SetInteger(sc->handle, control, value);
563 	if (ACPI_FAILURE(status)) {
564 		device_printf(sc->dev, "Couldn't update %s\n", control);
565 		return (FALSE);
566 	}
567 
568 	sc->lastValChanged = changed;
569 	return (0);
570 }
571 
572 /*
573  * Query the get methods to determine what functionality is available
574  * from the hardware function hotkeys.
575  */
576 static uint8_t
577 acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc)
578 {
579 	int val;
580 
581 	ACPI_SERIAL_ASSERT(fujitsu);
582 	/* save the hotkey bitmask */
583 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
584 	sc->gsif.name, &(sc->gsif.value)))) {
585 		sc->gsif.exists = 0;
586 		device_printf(sc->dev, "Couldn't query bitmask value\n");
587 	} else {
588 		sc->gsif.exists = 1;
589 	}
590 
591 	/* System Volume Level */
592 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
593 	    sc->gvol.name, &val))) {
594 		sc->gvol.exists = 0;
595 	} else {
596 		sc->gvol.exists = 1;
597 	}
598 
599 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
600 		sc->gbls.name, &val))) {
601 		sc->gbls.exists = 0;
602 	} else {
603 		sc->gbls.exists = 1;
604 	}
605 
606 	// don't add if we can use the new method
607 	if (sc->gbls.exists || ACPI_FAILURE(acpi_GetInteger(sc->handle,
608 	    sc->gbll.name, &val))) {
609 		sc->gbll.exists = 0;
610 	} else {
611 		sc->gbll.exists = 1;
612 	}
613 
614 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
615 	    sc->ghks.name, &val))) {
616 		sc->ghks.exists = 0;
617 	} else {
618 		sc->ghks.exists = 1;
619 	}
620 
621 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
622 	    sc->gmou.name, &val))) {
623 		sc->gmou.exists = 0;
624 	} else {
625 		sc->gmou.exists = 1;
626 	}
627 
628 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
629 	    sc->rbll.name, &val))) {
630 		sc->rbll.exists = 0;
631 	} else {
632 		sc->rbll.exists = 1;
633 	}
634 
635 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
636 	    sc->rvol.name, &val))) {
637 		sc->rvol.exists = 0;
638 	} else {
639 		sc->rvol.exists = 1;
640 	}
641 
642 	return (TRUE);
643 }
644 
645 /*
646  * Query each of the ACPI control methods that contain information we're
647  * interested in. We check the return values from the control methods and
648  * adjust any state variables if they should be adjusted.
649  */
650 static uint8_t
651 acpi_fujitsu_update(struct acpi_fujitsu_softc *sc)
652 {
653 	int changed;
654 	struct acpi_softc *acpi_sc;
655 
656 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
657 
658 	ACPI_SERIAL_ASSERT(fujitsu);
659 	if(sc->gsif.exists)
660 		changed = sc->gsif.value & acpi_fujitsu_method_get(sc,METHOD_GHKS);
661 	else
662 		changed = 0;
663 
664 	/* System Volume Level */
665 	if(sc->gvol.exists) {
666 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
667 		sc->gvol.name, &(sc->gvol.value)))) {
668 			device_printf(sc->dev, "Couldn't query volume level\n");
669 			return (FALSE);
670 		}
671 
672 		if (changed & VOLUME_CHANGED) {
673 			sc->bIsMuted =
674 			(uint8_t)((sc->gvol.value & VOLUME_MUTE_BIT) != 0);
675 
676 			/* Clear the modification bit */
677 			sc->gvol.value &= VOLUME_SETTING_BITS;
678 
679 			if (sc->bIsMuted) {
680 				acpi_UserNotify("FUJITSU", sc->handle, FN_MUTE);
681 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now mute\n");
682 			} else
683 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now %d\n",
684 				sc->gvol.value);
685 
686 			acpi_UserNotify("FUJITSU", sc->handle, FN_VOLUME);
687 		}
688 	}
689 
690 	/* Internal mouse pointer (eraserhead) */
691 	if(sc->gmou.exists) {
692 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
693 		sc->gmou.name, &(sc->gmou.value)))) {
694 			device_printf(sc->dev, "Couldn't query pointer state\n");
695 			return (FALSE);
696 		}
697 
698 		if (changed & MOUSE_CHANGED) {
699 			sc->bIntPtrEnabled = (uint8_t)(sc->gmou.value & 0x1);
700 
701 			/* Clear the modification bit */
702 			sc->gmou.value &= MOUSE_SETTING_BITS;
703 
704 			/* Set the value in case it is not hardware controlled */
705                         acpi_fujitsu_method_set(sc, METHOD_GMOU, sc->gmou.value);
706 
707 			acpi_UserNotify("FUJITSU", sc->handle, FN_POINTER_ENABLE);
708 
709 			ACPI_VPRINT(sc->dev, acpi_sc, "Internal pointer is now %s\n",
710 			(sc->bIntPtrEnabled) ? "enabled" : "disabled");
711 		}
712 	}
713 
714 	/* Screen Brightness Level P8XXX */
715 	if(sc->gbls.exists) {
716 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
717                 sc->gbls.name, &(sc->gbls.value)))) {
718                         device_printf(sc->dev, "Couldn't query P8XXX brightness level\n");
719                         return (FALSE);
720                 }
721 		if (changed & BRIGHT_CHANGED) {
722 			/* No state to record here. */
723 
724 			/* Clear the modification bit */
725 			sc->gbls.value &= BRIGHTNESS_SETTING_BITS;
726 
727 			/* Set the value in case it is not hardware controlled */
728 			acpi_fujitsu_method_set(sc, METHOD_GBLS, sc->gbls.value);
729 
730 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
731 
732 			ACPI_VPRINT(sc->dev, acpi_sc, "P8XXX Brightness level is now %d\n",
733 			sc->gbls.value);
734                 }
735 	}
736 
737 	/* Screen Brightness Level */
738 	if(sc->gbll.exists) {
739 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
740 		sc->gbll.name, &(sc->gbll.value)))) {
741 			device_printf(sc->dev, "Couldn't query brightness level\n");
742 			return (FALSE);
743 		}
744 
745 		if (changed & BRIGHT_CHANGED) {
746 			/* No state to record here. */
747 
748 			/* Clear the modification bit */
749 			sc->gbll.value &= BRIGHTNESS_SETTING_BITS;
750 
751 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
752 
753 			ACPI_VPRINT(sc->dev, acpi_sc, "Brightness level is now %d\n",
754 			sc->gbll.value);
755 		}
756 	}
757 
758 	sc->lastValChanged = changed;
759 	return (TRUE);
760 }
761