xref: /freebsd/sys/dev/acpi_support/acpi_fujitsu.c (revision 19261079b74319502c6ffa1249920079f0f69a72)
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 __FBSDID("$FreeBSD$");
32 
33 #include "opt_acpi.h"
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/bus.h>
37 #include <sys/module.h>
38 #include <sys/sysctl.h>
39 
40 #include <contrib/dev/acpica/include/acpi.h>
41 #include <contrib/dev/acpica/include/accommon.h>
42 
43 #include <dev/acpica/acpivar.h>
44 
45 /* Hooks for the ACPI CA debugging infrastructure */
46 #define _COMPONENT	ACPI_OEM
47 ACPI_MODULE_NAME("Fujitsu")
48 
49 /* Change and update bits for the hotkeys */
50 #define VOLUME_MUTE_BIT		0x40000000
51 
52 /* Values of settings */
53 #define GENERAL_SETTING_BITS	0x0fffffff
54 #define MOUSE_SETTING_BITS	GENERAL_SETTING_BITS
55 #define VOLUME_SETTING_BITS	GENERAL_SETTING_BITS
56 #define BRIGHTNESS_SETTING_BITS	GENERAL_SETTING_BITS
57 
58 /* Possible state changes */
59 /*
60  * These are NOT arbitrary values.  They are the
61  * GHKS return value from the device that says which
62  * hotkey is active.  They should match up with a bit
63  * from the GSIF bitmask.
64  */
65 #define BRIGHT_CHANGED	0x01
66 #define VOLUME_CHANGED	0x04
67 #define MOUSE_CHANGED	0x08
68 /*
69  * It is unknown which hotkey this bit is supposed to indicate, but
70  * according to values from GSIF this is a valid flag.
71  */
72 #define UNKNOWN_CHANGED	0x10
73 
74 /* sysctl values */
75 #define FN_MUTE			0
76 #define FN_POINTER_ENABLE	1
77 #define FN_LCD_BRIGHTNESS	2
78 #define FN_VOLUME		3
79 
80 /* Methods */
81 #define METHOD_GBLL	1
82 #define METHOD_GMOU	2
83 #define METHOD_GVOL	3
84 #define METHOD_MUTE	4
85 #define METHOD_RBLL	5
86 #define METHOD_RVOL	6
87 #define METHOD_GSIF	7
88 #define METHOD_GHKS	8
89 #define METHOD_GBLS	9
90 
91 /* Notify event */
92 #define	ACPI_NOTIFY_STATUS_CHANGED	0x80
93 
94 /*
95  * Holds a control method name and its associated integer value.
96  * Only used for no-argument control methods which return a value.
97  */
98 struct int_nameval {
99 	char	*name;
100 	int	value;
101 	int	exists;
102 };
103 
104 /*
105  * Driver extension for the FUJITSU ACPI driver.
106  */
107 struct acpi_fujitsu_softc {
108 	device_t	dev;
109 	ACPI_HANDLE	handle;
110 
111 	/* Control methods */
112 	struct int_nameval	_sta,	/* unused */
113 				gbll,	/* brightness */
114 				gbls,	/* get brightness state */
115 				ghks,	/* hotkey selector */
116 				gbuf,	/* unused (buffer?) */
117 				gmou,	/* mouse */
118 				gsif,	/* function key bitmask */
119 				gvol,	/* volume */
120 				rbll,	/* number of brightness levels (radix) */
121 				rvol;	/* number of volume levels (radix) */
122 
123 	/* State variables */
124 	uint8_t		bIsMuted;	/* Is volume muted */
125 	uint8_t		bIntPtrEnabled;	/* Is internal ptr enabled */
126 	uint32_t	lastValChanged;	/* The last value updated */
127 
128 	/* sysctl tree */
129 	struct sysctl_ctx_list	sysctl_ctx;
130 	struct sysctl_oid	*sysctl_tree;
131 };
132 
133 /* Driver entry point forward declarations. */
134 static int	acpi_fujitsu_probe(device_t dev);
135 static int	acpi_fujitsu_attach(device_t dev);
136 static int	acpi_fujitsu_detach(device_t dev);
137 static int	acpi_fujitsu_suspend(device_t dev);
138 static int	acpi_fujitsu_resume(device_t dev);
139 
140 static void	acpi_fujitsu_notify_status_changed(void *arg);
141 static void	acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context);
142 static int	acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS);
143 
144 /* Utility function declarations */
145 static uint8_t acpi_fujitsu_update(struct acpi_fujitsu_softc *sc);
146 static uint8_t acpi_fujitsu_init(struct acpi_fujitsu_softc *sc);
147 static uint8_t acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc);
148 
149 /* Driver/Module specific structure definitions. */
150 static device_method_t acpi_fujitsu_methods[] = {
151 	/* Device interface */
152 	DEVMETHOD(device_probe,		acpi_fujitsu_probe),
153 	DEVMETHOD(device_attach,	acpi_fujitsu_attach),
154 	DEVMETHOD(device_detach,	acpi_fujitsu_detach),
155 	DEVMETHOD(device_suspend,	acpi_fujitsu_suspend),
156 	DEVMETHOD(device_resume,	acpi_fujitsu_resume),
157 
158 	DEVMETHOD_END
159 };
160 
161 static driver_t acpi_fujitsu_driver = {
162 	"acpi_fujitsu",
163 	acpi_fujitsu_methods,
164 	sizeof(struct acpi_fujitsu_softc),
165 };
166 
167 /* Prototype for function hotkeys for getting/setting a value. */
168 static int acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method);
169 static int acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value);
170 
171 static char *fujitsu_ids[] = { "FUJ02B1", NULL };
172 
173 ACPI_SERIAL_DECL(fujitsu, "Fujitsu Function Hotkeys");
174 
175 /* sysctl names and function calls */
176 static struct {
177 	char		*name;
178 	int		method;
179 	char		*description;
180 } sysctl_table[] = {
181 	{
182 		.name		= "mute",
183 		.method		= METHOD_MUTE,
184 		.description	= "Speakers/headphones mute status"
185 	},
186 	{
187 		.name		= "pointer_enable",
188 		.method		= METHOD_GMOU,
189 		.description	= "Enable and disable the internal pointer"
190 	},
191 	{
192 		.name		= "lcd_brightness",
193 		.method		= METHOD_GBLL,
194 		.description	= "Brightness level of the LCD panel"
195 	},
196 	{
197 		.name		= "lcd_brightness",
198 		.method		= METHOD_GBLS,
199 		.description	= "Brightness level of the LCD panel"
200 	},
201 	{
202 		.name		= "volume",
203 		.method		= METHOD_GVOL,
204 		.description	= "Speakers/headphones volume level"
205 	},
206 	{
207 		.name		= "volume_radix",
208 		.method		= METHOD_RVOL,
209 		.description	= "Number of volume level steps"
210 	},
211 	{
212 		.name		= "lcd_brightness_radix",
213 		.method		= METHOD_RBLL,
214 		.description	= "Number of brightness level steps"
215 	},
216 	{ NULL, 0, NULL }
217 };
218 
219 static devclass_t acpi_fujitsu_devclass;
220 DRIVER_MODULE(acpi_fujitsu, acpi, acpi_fujitsu_driver,
221     acpi_fujitsu_devclass, 0, 0);
222 MODULE_DEPEND(acpi_fujitsu, acpi, 1, 1, 1);
223 MODULE_VERSION(acpi_fujitsu, 1);
224 
225 static int
226 acpi_fujitsu_probe(device_t dev)
227 {
228 	char *name;
229 	char buffer[64];
230 	int rv;
231 
232 	rv =  ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids, &name);
233 	if (acpi_disabled("fujitsu") || rv > 0 || device_get_unit(dev) > 1)
234 		return (ENXIO);
235 	sprintf(buffer, "Fujitsu Function Hotkeys %s", name);
236 	device_set_desc_copy(dev, buffer);
237 
238 	return (rv);
239 }
240 
241 static int
242 acpi_fujitsu_attach(device_t dev)
243 {
244 	struct acpi_fujitsu_softc *sc;
245 
246 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
247 
248 	sc = device_get_softc(dev);
249 	sc->dev = dev;
250 	sc->handle = acpi_get_handle(dev);
251 
252 	/* Install notification handler */
253 	AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
254 	    acpi_fujitsu_notify_handler, sc);
255 
256 	/* Snag our default values for the hotkeys / hotkey states. */
257 	ACPI_SERIAL_BEGIN(fujitsu);
258 	if (!acpi_fujitsu_init(sc))
259 		device_printf(dev, "Couldn't initialize hotkey states!\n");
260 	ACPI_SERIAL_END(fujitsu);
261 
262 	return (0);
263 }
264 
265 /*
266  * Called when the system is being suspended, simply
267  * set an event to be signalled when we wake up.
268  */
269 static int
270 acpi_fujitsu_suspend(device_t dev)
271 {
272 
273 	return (0);
274 }
275 
276 static int
277 acpi_fujitsu_resume(device_t dev)
278 {
279 	struct acpi_fujitsu_softc   *sc;
280 	ACPI_STATUS		    status;
281 
282 	sc = device_get_softc(dev);
283 
284 	/*
285 	 * The pointer needs to be re-enabled for
286 	 * some revisions of the P series (2120).
287 	 */
288 	ACPI_SERIAL_BEGIN(fujitsu);
289 
290 	if(sc->gmou.exists) {
291 		status = acpi_SetInteger(sc->handle, "SMOU", 1);
292 		if (ACPI_FAILURE(status))
293 			device_printf(sc->dev, "Couldn't enable pointer\n");
294 	}
295 	ACPI_SERIAL_END(fujitsu);
296 
297 	return (0);
298 }
299 
300 static void
301 acpi_fujitsu_notify_status_changed(void *arg)
302 {
303 	struct acpi_fujitsu_softc *sc;
304 
305 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
306 
307 	sc = (struct acpi_fujitsu_softc *)arg;
308 
309 	/*
310 	 * Since our notify function is called, we know something has
311 	 * happened.  So the only reason for acpi_fujitsu_update to fail
312 	 * is if we can't find what has changed or an error occurs.
313 	 */
314 	ACPI_SERIAL_BEGIN(fujitsu);
315 	acpi_fujitsu_update(sc);
316 	ACPI_SERIAL_END(fujitsu);
317 }
318 
319 static void
320 acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context)
321 {
322 	struct acpi_fujitsu_softc *sc;
323 
324 	ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
325 
326 	sc = (struct acpi_fujitsu_softc *)context;
327 
328 	switch (notify) {
329 	case ACPI_NOTIFY_STATUS_CHANGED:
330 		AcpiOsExecute(OSL_NOTIFY_HANDLER,
331 		    acpi_fujitsu_notify_status_changed, sc);
332 		break;
333 	default:
334 		/* unknown notification value */
335 		break;
336 	}
337 }
338 
339 static int
340 acpi_fujitsu_detach(device_t dev)
341 {
342 	struct acpi_fujitsu_softc *sc;
343 
344 	sc = device_get_softc(dev);
345 	AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
346 	   acpi_fujitsu_notify_handler);
347 
348 	sysctl_ctx_free(&sc->sysctl_ctx);
349 
350 	return (0);
351 }
352 
353 /*
354  * Initializes the names of the ACPI control methods and grabs
355  * the current state of all of the ACPI hotkeys into the softc.
356  */
357 static uint8_t
358 acpi_fujitsu_init(struct acpi_fujitsu_softc *sc)
359 {
360 	struct acpi_softc *acpi_sc;
361 	int i, exists;
362 
363 	ACPI_SERIAL_ASSERT(fujitsu);
364 
365 	/* Setup all of the names for each control method */
366 	sc->_sta.name = "_STA";
367 	sc->gbll.name = "GBLL";
368 	sc->gbls.name = "GBLS";
369 	sc->ghks.name = "GHKS";
370 	sc->gmou.name = "GMOU";
371 	sc->gsif.name = "GSIF";
372 	sc->gvol.name = "GVOL";
373 	sc->ghks.name = "GHKS";
374 	sc->gsif.name = "GSIF";
375 	sc->rbll.name = "RBLL";
376 	sc->rvol.name = "RVOL";
377 
378 	/* Determine what hardware functionality is available */
379 	acpi_fujitsu_check_hardware(sc);
380 
381 	/* Build the sysctl tree */
382 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
383 	sysctl_ctx_init(&sc->sysctl_ctx);
384 	sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
385 	    SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
386 	    OID_AUTO, "fujitsu", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "");
387 
388 	for (i = 0; sysctl_table[i].name != NULL; i++) {
389 		switch(sysctl_table[i].method) {
390 			case METHOD_GMOU:
391 				exists = sc->gmou.exists;
392 				break;
393 			case METHOD_GBLL:
394 				exists = sc->gbll.exists;
395 				break;
396 			case METHOD_GBLS:
397 				exists = sc->gbls.exists;
398 				break;
399 			case METHOD_GVOL:
400 			case METHOD_MUTE:
401 				exists = sc->gvol.exists;
402 				break;
403 			case METHOD_RVOL:
404 				exists = sc->rvol.exists;
405 				break;
406 			case METHOD_RBLL:
407 				exists = sc->rbll.exists;
408 				break;
409 			default:
410 				/* Allow by default */
411 				exists = 1;
412 				break;
413 		}
414 		if(!exists)
415 			continue;
416 		SYSCTL_ADD_PROC(&sc->sysctl_ctx,
417 		    SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
418 		    sysctl_table[i].name,
419 		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY |
420 		    CTLFLAG_NEEDGIANT, sc, i, acpi_fujitsu_sysctl, "I",
421 		    sysctl_table[i].description);
422 	}
423 
424 	/* Set the hotkeys to their initial states */
425 	if (!acpi_fujitsu_update(sc)) {
426 		device_printf(sc->dev, "Couldn't init hotkey states\n");
427 		return (FALSE);
428 	}
429 
430 	return (TRUE);
431 }
432 
433 static int
434 acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS)
435 {
436 	struct acpi_fujitsu_softc	*sc;
437 	int				method;
438 	int				arg;
439 	int				function_num, error = 0;
440 
441 	sc = (struct acpi_fujitsu_softc *)oidp->oid_arg1;
442 	function_num = oidp->oid_arg2;
443 	method = sysctl_table[function_num].method;
444 
445 	ACPI_SERIAL_BEGIN(fujitsu);
446 
447 	/* Get the current value */
448 	arg = acpi_fujitsu_method_get(sc, method);
449 	error = sysctl_handle_int(oidp, &arg, 0, req);
450 
451 	if (error != 0 || req->newptr == NULL)
452 		goto out;
453 
454 	/* Update the value */
455 	error = acpi_fujitsu_method_set(sc, method, arg);
456 
457 out:
458 	ACPI_SERIAL_END(fujitsu);
459 	return (error);
460 }
461 
462 static int
463 acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method)
464 {
465 	struct int_nameval	nv;
466 	ACPI_STATUS		status;
467 
468 	ACPI_SERIAL_ASSERT(fujitsu);
469 
470 	switch (method) {
471 		case METHOD_GBLL:
472 			nv = sc->gbll;
473 			break;
474 		case METHOD_GBLS:
475 			nv = sc->gbls;
476 			break;
477 		case METHOD_GMOU:
478 			nv = sc->gmou;
479 			break;
480 		case METHOD_GVOL:
481 		case METHOD_MUTE:
482 			nv = sc->gvol;
483 			break;
484 		case METHOD_GHKS:
485 			nv = sc->ghks;
486 			break;
487 		case METHOD_GSIF:
488 			nv = sc->gsif;
489 			break;
490 		case METHOD_RBLL:
491 			nv = sc->rbll;
492 			break;
493 		case METHOD_RVOL:
494 			nv = sc->rvol;
495 			break;
496 		default:
497 			return (FALSE);
498 	}
499 
500 	if(!nv.exists)
501 		return (EINVAL);
502 
503 	status = acpi_GetInteger(sc->handle, nv.name, &nv.value);
504 	if (ACPI_FAILURE(status)) {
505 		device_printf(sc->dev, "Couldn't query method (%s)\n", nv.name);
506 		return (FALSE);
507 	}
508 
509 	if (method == METHOD_MUTE) {
510 		sc->bIsMuted = (uint8_t)((nv.value & VOLUME_MUTE_BIT) != 0);
511 		return (sc->bIsMuted);
512 	}
513 
514 	nv.value &= GENERAL_SETTING_BITS;
515 	return (nv.value);
516 }
517 
518 static int
519 acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value)
520 {
521 	struct int_nameval	nv;
522 	ACPI_STATUS		status;
523 	char			*control;
524 	int			changed;
525 
526 	ACPI_SERIAL_ASSERT(fujitsu);
527 
528 	switch (method) {
529 		case METHOD_GBLL:
530 			changed = BRIGHT_CHANGED;
531 			control = "SBLL";
532 			nv = sc->gbll;
533 			break;
534 		case METHOD_GBLS:
535 			changed = BRIGHT_CHANGED;
536 			control = "SBL2";
537 			nv = sc->gbls;
538 			break;
539 		case METHOD_GMOU:
540 			changed = MOUSE_CHANGED;
541 			control = "SMOU";
542 			nv = sc->gmou;
543 			break;
544 		case METHOD_GVOL:
545 		case METHOD_MUTE:
546 			changed = VOLUME_CHANGED;
547 			control = "SVOL";
548 			nv = sc->gvol;
549 			break;
550 		default:
551 			return (EINVAL);
552 	}
553 
554 	if(!nv.exists)
555 		return (EINVAL);
556 
557 	if (method == METHOD_MUTE) {
558 		if (value == 1)
559 			value = nv.value | VOLUME_MUTE_BIT;
560 		else if (value == 0)
561 			value = nv.value & ~VOLUME_MUTE_BIT;
562 		else
563 			return (EINVAL);
564 	}
565 
566 	status = acpi_SetInteger(sc->handle, control, value);
567 	if (ACPI_FAILURE(status)) {
568 		device_printf(sc->dev, "Couldn't update %s\n", control);
569 		return (FALSE);
570 	}
571 
572 	sc->lastValChanged = changed;
573 	return (0);
574 }
575 
576 /*
577  * Query the get methods to determine what functionality is available
578  * from the hardware function hotkeys.
579  */
580 static uint8_t
581 acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc)
582 {
583 	int val;
584 
585 	ACPI_SERIAL_ASSERT(fujitsu);
586 	/* save the hotkey bitmask */
587 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
588 	sc->gsif.name, &(sc->gsif.value)))) {
589 		sc->gsif.exists = 0;
590 		device_printf(sc->dev, "Couldn't query bitmask value\n");
591 	} else {
592 		sc->gsif.exists = 1;
593 	}
594 
595 	/* System Volume Level */
596 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
597 	    sc->gvol.name, &val))) {
598 		sc->gvol.exists = 0;
599 	} else {
600 		sc->gvol.exists = 1;
601 	}
602 
603 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
604 		sc->gbls.name, &val))) {
605 		sc->gbls.exists = 0;
606 	} else {
607 		sc->gbls.exists = 1;
608 	}
609 
610 	// don't add if we can use the new method
611 	if (sc->gbls.exists || ACPI_FAILURE(acpi_GetInteger(sc->handle,
612 	    sc->gbll.name, &val))) {
613 		sc->gbll.exists = 0;
614 	} else {
615 		sc->gbll.exists = 1;
616 	}
617 
618 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
619 	    sc->ghks.name, &val))) {
620 		sc->ghks.exists = 0;
621 	} else {
622 		sc->ghks.exists = 1;
623 	}
624 
625 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
626 	    sc->gmou.name, &val))) {
627 		sc->gmou.exists = 0;
628 	} else {
629 		sc->gmou.exists = 1;
630 	}
631 
632 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
633 	    sc->rbll.name, &val))) {
634 		sc->rbll.exists = 0;
635 	} else {
636 		sc->rbll.exists = 1;
637 	}
638 
639 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
640 	    sc->rvol.name, &val))) {
641 		sc->rvol.exists = 0;
642 	} else {
643 		sc->rvol.exists = 1;
644 	}
645 
646 	return (TRUE);
647 }
648 
649 /*
650  * Query each of the ACPI control methods that contain information we're
651  * interested in. We check the return values from the control methods and
652  * adjust any state variables if they should be adjusted.
653  */
654 static uint8_t
655 acpi_fujitsu_update(struct acpi_fujitsu_softc *sc)
656 {
657 	int changed;
658 	struct acpi_softc *acpi_sc;
659 
660 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
661 
662 	ACPI_SERIAL_ASSERT(fujitsu);
663 	if(sc->gsif.exists)
664 		changed = sc->gsif.value & acpi_fujitsu_method_get(sc,METHOD_GHKS);
665 	else
666 		changed = 0;
667 
668 	/* System Volume Level */
669 	if(sc->gvol.exists) {
670 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
671 		sc->gvol.name, &(sc->gvol.value)))) {
672 			device_printf(sc->dev, "Couldn't query volume level\n");
673 			return (FALSE);
674 		}
675 
676 		if (changed & VOLUME_CHANGED) {
677 			sc->bIsMuted =
678 			(uint8_t)((sc->gvol.value & VOLUME_MUTE_BIT) != 0);
679 
680 			/* Clear the modification bit */
681 			sc->gvol.value &= VOLUME_SETTING_BITS;
682 
683 			if (sc->bIsMuted) {
684 				acpi_UserNotify("FUJITSU", sc->handle, FN_MUTE);
685 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now mute\n");
686 			} else
687 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now %d\n",
688 				sc->gvol.value);
689 
690 			acpi_UserNotify("FUJITSU", sc->handle, FN_VOLUME);
691 		}
692 	}
693 
694 	/* Internal mouse pointer (eraserhead) */
695 	if(sc->gmou.exists) {
696 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
697 		sc->gmou.name, &(sc->gmou.value)))) {
698 			device_printf(sc->dev, "Couldn't query pointer state\n");
699 			return (FALSE);
700 		}
701 
702 		if (changed & MOUSE_CHANGED) {
703 			sc->bIntPtrEnabled = (uint8_t)(sc->gmou.value & 0x1);
704 
705 			/* Clear the modification bit */
706 			sc->gmou.value &= MOUSE_SETTING_BITS;
707 
708 			/* Set the value in case it is not hardware controlled */
709                         acpi_fujitsu_method_set(sc, METHOD_GMOU, sc->gmou.value);
710 
711 			acpi_UserNotify("FUJITSU", sc->handle, FN_POINTER_ENABLE);
712 
713 			ACPI_VPRINT(sc->dev, acpi_sc, "Internal pointer is now %s\n",
714 			(sc->bIntPtrEnabled) ? "enabled" : "disabled");
715 		}
716 	}
717 
718 	/* Screen Brightness Level P8XXX */
719 	if(sc->gbls.exists) {
720 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
721                 sc->gbls.name, &(sc->gbls.value)))) {
722                         device_printf(sc->dev, "Couldn't query P8XXX brightness level\n");
723                         return (FALSE);
724                 }
725 		if (changed & BRIGHT_CHANGED) {
726 			/* No state to record here. */
727 
728 			/* Clear the modification bit */
729 			sc->gbls.value &= BRIGHTNESS_SETTING_BITS;
730 
731 			/* Set the value in case it is not hardware controlled */
732 			acpi_fujitsu_method_set(sc, METHOD_GBLS, sc->gbls.value);
733 
734 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
735 
736 			ACPI_VPRINT(sc->dev, acpi_sc, "P8XXX Brightness level is now %d\n",
737 			sc->gbls.value);
738                 }
739 	}
740 
741 	/* Screen Brightness Level */
742 	if(sc->gbll.exists) {
743 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
744 		sc->gbll.name, &(sc->gbll.value)))) {
745 			device_printf(sc->dev, "Couldn't query brightness level\n");
746 			return (FALSE);
747 		}
748 
749 		if (changed & BRIGHT_CHANGED) {
750 			/* No state to record here. */
751 
752 			/* Clear the modification bit */
753 			sc->gbll.value &= BRIGHTNESS_SETTING_BITS;
754 
755 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
756 
757 			ACPI_VPRINT(sc->dev, acpi_sc, "Brightness level is now %d\n",
758 			sc->gbll.value);
759 		}
760 	}
761 
762 	sc->lastValChanged = changed;
763 	return (TRUE);
764 }
765