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  * $FreeBSD: head/sys/dev/acpi_support/acpi_fujitsu.c 246128 2013-01-30 18:01:20Z sbz $
29  */
30 
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 "acpi.h"
39 #include "accommon.h"
40 
41 #include <dev/acpica/acpivar.h>
42 
43 /* Hooks for the ACPICA 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 	DEVMETHOD_END
156 };
157 
158 static driver_t acpi_fujitsu_driver = {
159 	"acpi_fujitsu",
160 	acpi_fujitsu_methods,
161 	sizeof(struct acpi_fujitsu_softc),
162 };
163 
164 /* Prototype for function hotkeys for getting/setting a value. */
165 static int acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method);
166 static int acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value);
167 
168 static char *fujitsu_ids[] = { "FUJ02B1", NULL };
169 
170 ACPI_SERIAL_DECL(fujitsu, "Fujitsu Function Hotkeys");
171 
172 /* sysctl names and function calls */
173 static struct {
174 	char		*name;
175 	int		method;
176 	char		*description;
177 } sysctl_table[] = {
178 	{
179 		.name		= "mute",
180 		.method		= METHOD_MUTE,
181 		.description	= "Speakers/headphones mute status"
182 	},
183 	{
184 		.name		= "pointer_enable",
185 		.method		= METHOD_GMOU,
186 		.description	= "Enable and disable the internal pointer"
187 	},
188 	{
189 		.name		= "lcd_brightness",
190 		.method		= METHOD_GBLL,
191 		.description	= "Brightness level of the LCD panel"
192 	},
193 	{
194 		.name		= "lcd_brightness",
195 		.method		= METHOD_GBLS,
196 		.description	= "Brightness level of the LCD panel"
197 	},
198 	{
199 		.name		= "volume",
200 		.method		= METHOD_GVOL,
201 		.description	= "Speakers/headphones volume level"
202 	},
203 	{
204 		.name		= "volume_radix",
205 		.method		= METHOD_RVOL,
206 		.description	= "Number of volume level steps"
207 	},
208 	{
209 		.name		= "lcd_brightness_radix",
210 		.method		= METHOD_RBLL,
211 		.description	= "Number of brightness level steps"
212 	},
213 
214 	{ NULL, 0, NULL }
215 };
216 
217 static devclass_t acpi_fujitsu_devclass;
218 DRIVER_MODULE(acpi_fujitsu, acpi, acpi_fujitsu_driver,
219     acpi_fujitsu_devclass, NULL, NULL);
220 MODULE_DEPEND(acpi_fujitsu, acpi, 1, 1, 1);
221 MODULE_VERSION(acpi_fujitsu, 1);
222 
223 static int
224 acpi_fujitsu_probe(device_t dev)
225 {
226 	char *name;
227 	char buffer[64];
228 
229 	name = ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids);
230 	if (acpi_disabled("fujitsu") || name == NULL ||
231 	    device_get_unit(dev) > 1)
232 		return (ENXIO);
233 
234 	ksprintf(buffer, "Fujitsu Function Hotkeys %s", name);
235 	device_set_desc_copy(dev, buffer);
236 
237 	return (0);
238 }
239 
240 static int
241 acpi_fujitsu_attach(device_t dev)
242 {
243 	struct acpi_fujitsu_softc *sc;
244 
245 	ACPI_SERIAL_INIT(fujitsu);
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 
320 static void
321 acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context)
322 {
323 	struct acpi_fujitsu_softc *sc;
324 
325 	ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
326 
327 	sc = (struct acpi_fujitsu_softc *)context;
328 
329 	switch (notify) {
330 	case ACPI_NOTIFY_STATUS_CHANGED:
331 		AcpiOsExecute(OSL_NOTIFY_HANDLER,
332 		    acpi_fujitsu_notify_status_changed, sc);
333 		break;
334 	default:
335 		device_printf(sc->dev, "unknown notify: %#x\n", notify);
336 		break;
337 	}
338 }
339 
340 static int
341 acpi_fujitsu_detach(device_t dev)
342 {
343 	struct acpi_fujitsu_softc *sc;
344 
345 	sc = device_get_softc(dev);
346 	AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
347 	   acpi_fujitsu_notify_handler);
348 
349 	sysctl_ctx_free(&sc->sysctl_ctx);
350 
351 	return (0);
352 }
353 
354 /*
355  * Initializes the names of the ACPI control methods and grabs
356  * the current state of all of the ACPI hotkeys into the softc.
357  */
358 static uint8_t
359 acpi_fujitsu_init(struct acpi_fujitsu_softc *sc)
360 {
361 	struct acpi_softc *acpi_sc;
362 	int i, exists;
363 
364 	ACPI_SERIAL_ASSERT(fujitsu);
365 
366 	/* Setup all of the names for each control method */
367 	sc->_sta.name = "_STA";
368 	sc->gbll.name = "GBLL";
369 	sc->gbls.name = "GBLS";
370 	sc->ghks.name = "GHKS";
371 	sc->gmou.name = "GMOU";
372 	sc->gsif.name = "GSIF";
373 	sc->gvol.name = "GVOL";
374 	sc->ghks.name = "GHKS";
375 	sc->gsif.name = "GSIF";
376 	sc->rbll.name = "RBLL";
377 	sc->rvol.name = "RVOL";
378 
379 	/* Determine what hardware functionality is available */
380 	acpi_fujitsu_check_hardware(sc);
381 
382 	/* Build the sysctl tree */
383 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
384 	sysctl_ctx_init(&sc->sysctl_ctx);
385 	sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
386 	    SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
387 	    OID_AUTO, "fujitsu", CTLFLAG_RD, 0, "");
388 
389 	for (i = 0; sysctl_table[i].name != NULL; i++) {
390 		switch(sysctl_table[i].method) {
391 			case METHOD_GMOU:
392 				exists = sc->gmou.exists;
393 				break;
394 			case METHOD_GBLL:
395 				exists = sc->gbll.exists;
396 				break;
397 			case METHOD_GBLS:
398 				exists = sc->gbls.exists;
399 				break;
400 			case METHOD_GVOL:
401 			case METHOD_MUTE:
402 				exists = sc->gvol.exists;
403 				break;
404 			case METHOD_RVOL:
405 				exists = sc->rvol.exists;
406 				break;
407 			case METHOD_RBLL:
408 				exists = sc->rbll.exists;
409 				break;
410 			default:
411 				/* Allow by default */
412 				exists = 1;
413 				break;
414 		}
415 		if(!exists)
416 			continue;
417 		SYSCTL_ADD_PROC(&sc->sysctl_ctx,
418 		    SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
419 		    sysctl_table[i].name,
420 		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY,
421 		    sc, i, acpi_fujitsu_sysctl, "I",
422 		    sysctl_table[i].description);
423 	}
424 
425 
426 	/* Set the hotkeys to their initial states */
427 	if (!acpi_fujitsu_update(sc)) {
428 		device_printf(sc->dev, "Couldn't init hotkey states\n");
429 		return (FALSE);
430 	}
431 
432 	return (TRUE);
433 }
434 
435 static int
436 acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS)
437 {
438 	struct acpi_fujitsu_softc	*sc;
439 	int				method;
440 	int				arg;
441 	int				function_num, error = 0;
442 
443 	sc = (struct acpi_fujitsu_softc *)oidp->oid_arg1;
444 	function_num = oidp->oid_arg2;
445 	method = sysctl_table[function_num].method;
446 
447 	ACPI_SERIAL_BEGIN(fujitsu);
448 
449 	/* Get the current value */
450 	arg = acpi_fujitsu_method_get(sc, method);
451 	error = sysctl_handle_int(oidp, &arg, 0, req);
452 
453 	if (error != 0 || req->newptr == NULL)
454 		goto out;
455 
456 	/* Update the value */
457 	error = acpi_fujitsu_method_set(sc, method, arg);
458 
459 out:
460 	ACPI_SERIAL_END(fujitsu);
461 	return (error);
462 }
463 
464 static int
465 acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method)
466 {
467 	struct int_nameval	nv;
468 	ACPI_STATUS		status;
469 
470 	ACPI_SERIAL_ASSERT(fujitsu);
471 
472 	switch (method) {
473 		case METHOD_GBLL:
474 			nv = sc->gbll;
475 			break;
476 		case METHOD_GBLS:
477 			nv = sc->gbls;
478 			break;
479 		case METHOD_GMOU:
480 			nv = sc->gmou;
481 			break;
482 		case METHOD_GVOL:
483 		case METHOD_MUTE:
484 			nv = sc->gvol;
485 			break;
486 		case METHOD_GHKS:
487 			nv = sc->ghks;
488 			break;
489 		case METHOD_GSIF:
490 			nv = sc->gsif;
491 			break;
492 		case METHOD_RBLL:
493 			nv = sc->rbll;
494 			break;
495 		case METHOD_RVOL:
496 			nv = sc->rvol;
497 			break;
498 		default:
499 			return (FALSE);
500 	}
501 
502 	if(!nv.exists)
503 		return (EINVAL);
504 
505 	status = acpi_GetInteger(sc->handle, nv.name, &nv.value);
506 	if (ACPI_FAILURE(status)) {
507 		device_printf(sc->dev, "Couldn't query method (%s)\n", nv.name);
508 		return (FALSE);
509 	}
510 
511 	if (method == METHOD_MUTE) {
512 		sc->bIsMuted = (uint8_t)((nv.value & VOLUME_MUTE_BIT) != 0);
513 		return (sc->bIsMuted);
514 	}
515 
516 	nv.value &= GENERAL_SETTING_BITS;
517 	return (nv.value);
518 }
519 
520 static int
521 acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value)
522 {
523 	struct int_nameval	nv;
524 	ACPI_STATUS		status;
525 	char			*control;
526 	int			changed;
527 
528 	ACPI_SERIAL_ASSERT(fujitsu);
529 
530 	switch (method) {
531 		case METHOD_GBLL:
532 			changed = BRIGHT_CHANGED;
533 			control = "SBLL";
534 			nv = sc->gbll;
535 			break;
536 		case METHOD_GBLS:
537 			changed = BRIGHT_CHANGED;
538 			control = "SBL2";
539 			nv = sc->gbls;
540 			break;
541 		case METHOD_GMOU:
542 			changed = MOUSE_CHANGED;
543 			control = "SMOU";
544 			nv = sc->gmou;
545 			break;
546 		case METHOD_GVOL:
547 		case METHOD_MUTE:
548 			changed = VOLUME_CHANGED;
549 			control = "SVOL";
550 			nv = sc->gvol;
551 			break;
552 		default:
553 			return (EINVAL);
554 	}
555 
556 	if(!nv.exists)
557 		return (EINVAL);
558 
559 	if (method == METHOD_MUTE) {
560 		if (value == 1)
561 			value = nv.value | VOLUME_MUTE_BIT;
562 		else if (value == 0)
563 			value = nv.value & ~VOLUME_MUTE_BIT;
564 		else
565 			return (EINVAL);
566 	}
567 
568 	status = acpi_SetInteger(sc->handle, control, value);
569 	if (ACPI_FAILURE(status)) {
570 		device_printf(sc->dev, "Couldn't update %s\n", control);
571 		return (FALSE);
572 	}
573 
574 	sc->lastValChanged = changed;
575 	return (0);
576 }
577 
578 /*
579  * Query the get methods to determine what functionality is available
580  * from the hardware function hotkeys.
581  */
582 static uint8_t
583 acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc)
584 {
585 	int val;
586 
587 	ACPI_SERIAL_ASSERT(fujitsu);
588 	/* save the hotkey bitmask */
589 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
590 	sc->gsif.name, &(sc->gsif.value)))) {
591 		sc->gsif.exists = 0;
592 		device_printf(sc->dev, "Couldn't query bitmask value\n");
593 	} else {
594 		sc->gsif.exists = 1;
595 	}
596 
597 	/* System Volume Level */
598 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
599 	    sc->gvol.name, &val))) {
600 		sc->gvol.exists = 0;
601 	} else {
602 		sc->gvol.exists = 1;
603 	}
604 
605 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
606 		sc->gbls.name, &val))) {
607 		sc->gbls.exists = 0;
608 	} else {
609 		sc->gbls.exists = 1;
610 	}
611 
612 	/* don't add if we can use the new method */
613 	if (sc->gbls.exists || ACPI_FAILURE(acpi_GetInteger(sc->handle,
614 	    sc->gbll.name, &val))) {
615 		sc->gbll.exists = 0;
616 	} else {
617 		sc->gbll.exists = 1;
618 	}
619 
620 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
621 	    sc->ghks.name, &val))) {
622 		sc->ghks.exists = 0;
623 	} else {
624 		sc->ghks.exists = 1;
625 	}
626 
627 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
628 	    sc->gmou.name, &val))) {
629 		sc->gmou.exists = 0;
630 	} else {
631 		sc->gmou.exists = 1;
632 	}
633 
634 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
635 	    sc->rbll.name, &val))) {
636 		sc->rbll.exists = 0;
637 	} else {
638 		sc->rbll.exists = 1;
639 	}
640 
641 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
642 	    sc->rvol.name, &val))) {
643 		sc->rvol.exists = 0;
644 	} else {
645 		sc->rvol.exists = 1;
646 	}
647 
648 	return (TRUE);
649 }
650 
651 /*
652  * Query each of the ACPI control methods that contain information we're
653  * interested in. We check the return values from the control methods and
654  * adjust any state variables if they should be adjusted.
655  */
656 static uint8_t
657 acpi_fujitsu_update(struct acpi_fujitsu_softc *sc)
658 {
659 	int changed;
660 	struct acpi_softc *acpi_sc;
661 
662 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
663 
664 	ACPI_SERIAL_ASSERT(fujitsu);
665 	if(sc->gsif.exists)
666 		changed = sc->gsif.value & acpi_fujitsu_method_get(sc,METHOD_GHKS);
667 	else
668 		changed = 0;
669 
670 	/* System Volume Level */
671 	if(sc->gvol.exists) {
672 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
673 		sc->gvol.name, &(sc->gvol.value)))) {
674 			device_printf(sc->dev, "Couldn't query volume level\n");
675 			return (FALSE);
676 		}
677 
678 		if (changed & VOLUME_CHANGED) {
679 			sc->bIsMuted =
680 			(uint8_t)((sc->gvol.value & VOLUME_MUTE_BIT) != 0);
681 
682 			/* Clear the modification bit */
683 			sc->gvol.value &= VOLUME_SETTING_BITS;
684 
685 			if (sc->bIsMuted) {
686 				acpi_UserNotify("FUJITSU", sc->handle, FN_MUTE);
687 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now mute\n");
688 			} else
689 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now %d\n",
690 				sc->gvol.value);
691 
692 			acpi_UserNotify("FUJITSU", sc->handle, FN_VOLUME);
693 		}
694 	}
695 
696 	/* Internal mouse pointer (eraserhead) */
697 	if(sc->gmou.exists) {
698 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
699 		sc->gmou.name, &(sc->gmou.value)))) {
700 			device_printf(sc->dev, "Couldn't query pointer state\n");
701 			return (FALSE);
702 		}
703 
704 		if (changed & MOUSE_CHANGED) {
705 			sc->bIntPtrEnabled = (uint8_t)(sc->gmou.value & 0x1);
706 
707 			/* Clear the modification bit */
708 			sc->gmou.value &= MOUSE_SETTING_BITS;
709 
710 			/* Set the value in case it is not hardware controlled */
711 			acpi_fujitsu_method_set(sc, METHOD_GMOU, sc->gmou.value);
712 
713 			acpi_UserNotify("FUJITSU", sc->handle, FN_POINTER_ENABLE);
714 
715 			ACPI_VPRINT(sc->dev, acpi_sc, "Internal pointer is now %s\n",
716 			(sc->bIntPtrEnabled) ? "enabled" : "disabled");
717 		}
718 	}
719 
720 	/* Screen Brightness Level P8XXX */
721 	if(sc->gbls.exists) {
722 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
723                 sc->gbls.name, &(sc->gbls.value)))) {
724                         device_printf(sc->dev, "Couldn't query P8XXX brightness level\n");
725                         return (FALSE);
726                 }
727 		if (changed & BRIGHT_CHANGED) {
728 			/* No state to record here. */
729 
730 			/* Clear the modification bit */
731 			sc->gbls.value &= BRIGHTNESS_SETTING_BITS;
732 
733 			/* Set the value in case it is not hardware controlled */
734 			acpi_fujitsu_method_set(sc, METHOD_GBLS, sc->gbls.value);
735 
736 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
737 
738 			ACPI_VPRINT(sc->dev, acpi_sc, "P8XXX Brightness level is now %d\n",
739 			sc->gbls.value);
740                 }
741 	}
742 
743 	/* Screen Brightness Level */
744 	if(sc->gbll.exists) {
745 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
746 		sc->gbll.name, &(sc->gbll.value)))) {
747 			device_printf(sc->dev, "Couldn't query brightness level\n");
748 			return (FALSE);
749 		}
750 
751 		if (changed & BRIGHT_CHANGED) {
752 			/* No state to record here. */
753 
754 			/* Clear the modification bit */
755 			sc->gbll.value &= BRIGHTNESS_SETTING_BITS;
756 
757 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
758 
759 			ACPI_VPRINT(sc->dev, acpi_sc, "Brightness level is now %d\n",
760 			sc->gbll.value);
761 		}
762 	}
763 
764 	sc->lastValChanged = changed;
765 	return (TRUE);
766 }
767