xref: /freebsd/sys/dev/acpi_support/acpi_fujitsu.c (revision d93a896ef95946b0bf1219866fcb324b78543444)
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 
217 	{ NULL, 0, NULL }
218 };
219 
220 static devclass_t acpi_fujitsu_devclass;
221 DRIVER_MODULE(acpi_fujitsu, acpi, acpi_fujitsu_driver,
222     acpi_fujitsu_devclass, 0, 0);
223 MODULE_DEPEND(acpi_fujitsu, acpi, 1, 1, 1);
224 MODULE_VERSION(acpi_fujitsu, 1);
225 
226 static int
227 acpi_fujitsu_probe(device_t dev)
228 {
229 	char *name;
230 	char buffer[64];
231 
232 	name = ACPI_ID_PROBE(device_get_parent(dev), dev, fujitsu_ids);
233 	if (acpi_disabled("fujitsu") || name == NULL ||
234 	    device_get_unit(dev) > 1)
235 		return (ENXIO);
236 
237 	sprintf(buffer, "Fujitsu Function Hotkeys %s", name);
238 	device_set_desc_copy(dev, buffer);
239 
240 	return (0);
241 }
242 
243 static int
244 acpi_fujitsu_attach(device_t dev)
245 {
246 	struct acpi_fujitsu_softc *sc;
247 
248 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
249 
250 	sc = device_get_softc(dev);
251 	sc->dev = dev;
252 	sc->handle = acpi_get_handle(dev);
253 
254 	/* Install notification handler */
255 	AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
256 	    acpi_fujitsu_notify_handler, sc);
257 
258 	/* Snag our default values for the hotkeys / hotkey states. */
259 	ACPI_SERIAL_BEGIN(fujitsu);
260 	if (!acpi_fujitsu_init(sc))
261 		device_printf(dev, "Couldn't initialize hotkey states!\n");
262 	ACPI_SERIAL_END(fujitsu);
263 
264 	return (0);
265 }
266 
267 /*
268  * Called when the system is being suspended, simply
269  * set an event to be signalled when we wake up.
270  */
271 static int
272 acpi_fujitsu_suspend(device_t dev)
273 {
274 
275 	return (0);
276 }
277 
278 static int
279 acpi_fujitsu_resume(device_t dev)
280 {
281 	struct acpi_fujitsu_softc   *sc;
282 	ACPI_STATUS		    status;
283 
284 	sc = device_get_softc(dev);
285 
286 	/*
287 	 * The pointer needs to be re-enabled for
288 	 * some revisions of the P series (2120).
289 	 */
290 	ACPI_SERIAL_BEGIN(fujitsu);
291 
292 	if(sc->gmou.exists) {
293 		status = acpi_SetInteger(sc->handle, "SMOU", 1);
294 		if (ACPI_FAILURE(status))
295 			device_printf(sc->dev, "Couldn't enable pointer\n");
296 	}
297 	ACPI_SERIAL_END(fujitsu);
298 
299 	return (0);
300 }
301 
302 static void
303 acpi_fujitsu_notify_status_changed(void *arg)
304 {
305 	struct acpi_fujitsu_softc *sc;
306 
307 	ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
308 
309 	sc = (struct acpi_fujitsu_softc *)arg;
310 
311 	/*
312 	 * Since our notify function is called, we know something has
313 	 * happened.  So the only reason for acpi_fujitsu_update to fail
314 	 * is if we can't find what has changed or an error occurs.
315 	 */
316 	ACPI_SERIAL_BEGIN(fujitsu);
317 	acpi_fujitsu_update(sc);
318 	ACPI_SERIAL_END(fujitsu);
319 }
320 
321 
322 static void
323 acpi_fujitsu_notify_handler(ACPI_HANDLE h, uint32_t notify, void *context)
324 {
325 	struct acpi_fujitsu_softc *sc;
326 
327 	ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
328 
329 	sc = (struct acpi_fujitsu_softc *)context;
330 
331 	switch (notify) {
332 	case ACPI_NOTIFY_STATUS_CHANGED:
333 		AcpiOsExecute(OSL_NOTIFY_HANDLER,
334 		    acpi_fujitsu_notify_status_changed, sc);
335 		break;
336 	default:
337 		/* unknown notification value */
338 		break;
339 	}
340 }
341 
342 static int
343 acpi_fujitsu_detach(device_t dev)
344 {
345 	struct acpi_fujitsu_softc *sc;
346 
347 	sc = device_get_softc(dev);
348 	AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
349 	   acpi_fujitsu_notify_handler);
350 
351 	sysctl_ctx_free(&sc->sysctl_ctx);
352 
353 	return (0);
354 }
355 
356 /*
357  * Initializes the names of the ACPI control methods and grabs
358  * the current state of all of the ACPI hotkeys into the softc.
359  */
360 static uint8_t
361 acpi_fujitsu_init(struct acpi_fujitsu_softc *sc)
362 {
363 	struct acpi_softc *acpi_sc;
364 	int i, exists;
365 
366 	ACPI_SERIAL_ASSERT(fujitsu);
367 
368 	/* Setup all of the names for each control method */
369 	sc->_sta.name = "_STA";
370 	sc->gbll.name = "GBLL";
371 	sc->gbls.name = "GBLS";
372 	sc->ghks.name = "GHKS";
373 	sc->gmou.name = "GMOU";
374 	sc->gsif.name = "GSIF";
375 	sc->gvol.name = "GVOL";
376 	sc->ghks.name = "GHKS";
377 	sc->gsif.name = "GSIF";
378 	sc->rbll.name = "RBLL";
379 	sc->rvol.name = "RVOL";
380 
381 	/* Determine what hardware functionality is available */
382 	acpi_fujitsu_check_hardware(sc);
383 
384 	/* Build the sysctl tree */
385 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
386 	sysctl_ctx_init(&sc->sysctl_ctx);
387 	sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
388 	    SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
389 	    OID_AUTO, "fujitsu", CTLFLAG_RD, 0, "");
390 
391 	for (i = 0; sysctl_table[i].name != NULL; i++) {
392 		switch(sysctl_table[i].method) {
393 			case METHOD_GMOU:
394 				exists = sc->gmou.exists;
395 				break;
396 			case METHOD_GBLL:
397 				exists = sc->gbll.exists;
398 				break;
399 			case METHOD_GBLS:
400 				exists = sc->gbls.exists;
401 				break;
402 			case METHOD_GVOL:
403 			case METHOD_MUTE:
404 				exists = sc->gvol.exists;
405 				break;
406 			case METHOD_RVOL:
407 				exists = sc->rvol.exists;
408 				break;
409 			case METHOD_RBLL:
410 				exists = sc->rbll.exists;
411 				break;
412 			default:
413 				/* Allow by default */
414 				exists = 1;
415 				break;
416 		}
417 		if(!exists)
418 			continue;
419 		SYSCTL_ADD_PROC(&sc->sysctl_ctx,
420 		    SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO,
421 		    sysctl_table[i].name,
422 		    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY,
423 		    sc, i, acpi_fujitsu_sysctl, "I",
424 		    sysctl_table[i].description);
425 	}
426 
427 
428 	/* Set the hotkeys to their initial states */
429 	if (!acpi_fujitsu_update(sc)) {
430 		device_printf(sc->dev, "Couldn't init hotkey states\n");
431 		return (FALSE);
432 	}
433 
434 	return (TRUE);
435 }
436 
437 static int
438 acpi_fujitsu_sysctl(SYSCTL_HANDLER_ARGS)
439 {
440 	struct acpi_fujitsu_softc	*sc;
441 	int				method;
442 	int				arg;
443 	int				function_num, error = 0;
444 
445 	sc = (struct acpi_fujitsu_softc *)oidp->oid_arg1;
446 	function_num = oidp->oid_arg2;
447 	method = sysctl_table[function_num].method;
448 
449 	ACPI_SERIAL_BEGIN(fujitsu);
450 
451 	/* Get the current value */
452 	arg = acpi_fujitsu_method_get(sc, method);
453 	error = sysctl_handle_int(oidp, &arg, 0, req);
454 
455 	if (error != 0 || req->newptr == NULL)
456 		goto out;
457 
458 	/* Update the value */
459 	error = acpi_fujitsu_method_set(sc, method, arg);
460 
461 out:
462 	ACPI_SERIAL_END(fujitsu);
463 	return (error);
464 }
465 
466 static int
467 acpi_fujitsu_method_get(struct acpi_fujitsu_softc *sc, int method)
468 {
469 	struct int_nameval	nv;
470 	ACPI_STATUS		status;
471 
472 	ACPI_SERIAL_ASSERT(fujitsu);
473 
474 	switch (method) {
475 		case METHOD_GBLL:
476 			nv = sc->gbll;
477 			break;
478 		case METHOD_GBLS:
479 			nv = sc->gbls;
480 			break;
481 		case METHOD_GMOU:
482 			nv = sc->gmou;
483 			break;
484 		case METHOD_GVOL:
485 		case METHOD_MUTE:
486 			nv = sc->gvol;
487 			break;
488 		case METHOD_GHKS:
489 			nv = sc->ghks;
490 			break;
491 		case METHOD_GSIF:
492 			nv = sc->gsif;
493 			break;
494 		case METHOD_RBLL:
495 			nv = sc->rbll;
496 			break;
497 		case METHOD_RVOL:
498 			nv = sc->rvol;
499 			break;
500 		default:
501 			return (FALSE);
502 	}
503 
504 	if(!nv.exists)
505 		return (EINVAL);
506 
507 	status = acpi_GetInteger(sc->handle, nv.name, &nv.value);
508 	if (ACPI_FAILURE(status)) {
509 		device_printf(sc->dev, "Couldn't query method (%s)\n", nv.name);
510 		return (FALSE);
511 	}
512 
513 	if (method == METHOD_MUTE) {
514 		sc->bIsMuted = (uint8_t)((nv.value & VOLUME_MUTE_BIT) != 0);
515 		return (sc->bIsMuted);
516 	}
517 
518 	nv.value &= GENERAL_SETTING_BITS;
519 	return (nv.value);
520 }
521 
522 static int
523 acpi_fujitsu_method_set(struct acpi_fujitsu_softc *sc, int method, int value)
524 {
525 	struct int_nameval	nv;
526 	ACPI_STATUS		status;
527 	char			*control;
528 	int			changed;
529 
530 	ACPI_SERIAL_ASSERT(fujitsu);
531 
532 	switch (method) {
533 		case METHOD_GBLL:
534 			changed = BRIGHT_CHANGED;
535 			control = "SBLL";
536 			nv = sc->gbll;
537 			break;
538 		case METHOD_GBLS:
539 			changed = BRIGHT_CHANGED;
540 			control = "SBL2";
541 			nv = sc->gbls;
542 			break;
543 		case METHOD_GMOU:
544 			changed = MOUSE_CHANGED;
545 			control = "SMOU";
546 			nv = sc->gmou;
547 			break;
548 		case METHOD_GVOL:
549 		case METHOD_MUTE:
550 			changed = VOLUME_CHANGED;
551 			control = "SVOL";
552 			nv = sc->gvol;
553 			break;
554 		default:
555 			return (EINVAL);
556 	}
557 
558 	if(!nv.exists)
559 		return (EINVAL);
560 
561 	if (method == METHOD_MUTE) {
562 		if (value == 1)
563 			value = nv.value | VOLUME_MUTE_BIT;
564 		else if (value == 0)
565 			value = nv.value & ~VOLUME_MUTE_BIT;
566 		else
567 			return (EINVAL);
568 	}
569 
570 	status = acpi_SetInteger(sc->handle, control, value);
571 	if (ACPI_FAILURE(status)) {
572 		device_printf(sc->dev, "Couldn't update %s\n", control);
573 		return (FALSE);
574 	}
575 
576 	sc->lastValChanged = changed;
577 	return (0);
578 }
579 
580 /*
581  * Query the get methods to determine what functionality is available
582  * from the hardware function hotkeys.
583  */
584 static uint8_t
585 acpi_fujitsu_check_hardware(struct acpi_fujitsu_softc *sc)
586 {
587 	int val;
588 
589 	ACPI_SERIAL_ASSERT(fujitsu);
590 	/* save the hotkey bitmask */
591 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
592 	sc->gsif.name, &(sc->gsif.value)))) {
593 		sc->gsif.exists = 0;
594 		device_printf(sc->dev, "Couldn't query bitmask value\n");
595 	} else {
596 		sc->gsif.exists = 1;
597 	}
598 
599 	/* System Volume Level */
600 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
601 	    sc->gvol.name, &val))) {
602 		sc->gvol.exists = 0;
603 	} else {
604 		sc->gvol.exists = 1;
605 	}
606 
607 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
608 		sc->gbls.name, &val))) {
609 		sc->gbls.exists = 0;
610 	} else {
611 		sc->gbls.exists = 1;
612 	}
613 
614 	// don't add if we can use the new method
615 	if (sc->gbls.exists || ACPI_FAILURE(acpi_GetInteger(sc->handle,
616 	    sc->gbll.name, &val))) {
617 		sc->gbll.exists = 0;
618 	} else {
619 		sc->gbll.exists = 1;
620 	}
621 
622 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
623 	    sc->ghks.name, &val))) {
624 		sc->ghks.exists = 0;
625 	} else {
626 		sc->ghks.exists = 1;
627 	}
628 
629 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
630 	    sc->gmou.name, &val))) {
631 		sc->gmou.exists = 0;
632 	} else {
633 		sc->gmou.exists = 1;
634 	}
635 
636 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
637 	    sc->rbll.name, &val))) {
638 		sc->rbll.exists = 0;
639 	} else {
640 		sc->rbll.exists = 1;
641 	}
642 
643 	if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
644 	    sc->rvol.name, &val))) {
645 		sc->rvol.exists = 0;
646 	} else {
647 		sc->rvol.exists = 1;
648 	}
649 
650 	return (TRUE);
651 }
652 
653 /*
654  * Query each of the ACPI control methods that contain information we're
655  * interested in. We check the return values from the control methods and
656  * adjust any state variables if they should be adjusted.
657  */
658 static uint8_t
659 acpi_fujitsu_update(struct acpi_fujitsu_softc *sc)
660 {
661 	int changed;
662 	struct acpi_softc *acpi_sc;
663 
664 	acpi_sc = acpi_device_get_parent_softc(sc->dev);
665 
666 	ACPI_SERIAL_ASSERT(fujitsu);
667 	if(sc->gsif.exists)
668 		changed = sc->gsif.value & acpi_fujitsu_method_get(sc,METHOD_GHKS);
669 	else
670 		changed = 0;
671 
672 	/* System Volume Level */
673 	if(sc->gvol.exists) {
674 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
675 		sc->gvol.name, &(sc->gvol.value)))) {
676 			device_printf(sc->dev, "Couldn't query volume level\n");
677 			return (FALSE);
678 		}
679 
680 		if (changed & VOLUME_CHANGED) {
681 			sc->bIsMuted =
682 			(uint8_t)((sc->gvol.value & VOLUME_MUTE_BIT) != 0);
683 
684 			/* Clear the modification bit */
685 			sc->gvol.value &= VOLUME_SETTING_BITS;
686 
687 			if (sc->bIsMuted) {
688 				acpi_UserNotify("FUJITSU", sc->handle, FN_MUTE);
689 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now mute\n");
690 			} else
691 				ACPI_VPRINT(sc->dev, acpi_sc, "Volume is now %d\n",
692 				sc->gvol.value);
693 
694 			acpi_UserNotify("FUJITSU", sc->handle, FN_VOLUME);
695 		}
696 	}
697 
698 	/* Internal mouse pointer (eraserhead) */
699 	if(sc->gmou.exists) {
700 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
701 		sc->gmou.name, &(sc->gmou.value)))) {
702 			device_printf(sc->dev, "Couldn't query pointer state\n");
703 			return (FALSE);
704 		}
705 
706 		if (changed & MOUSE_CHANGED) {
707 			sc->bIntPtrEnabled = (uint8_t)(sc->gmou.value & 0x1);
708 
709 			/* Clear the modification bit */
710 			sc->gmou.value &= MOUSE_SETTING_BITS;
711 
712 			/* Set the value in case it is not hardware controlled */
713                         acpi_fujitsu_method_set(sc, METHOD_GMOU, sc->gmou.value);
714 
715 			acpi_UserNotify("FUJITSU", sc->handle, FN_POINTER_ENABLE);
716 
717 			ACPI_VPRINT(sc->dev, acpi_sc, "Internal pointer is now %s\n",
718 			(sc->bIntPtrEnabled) ? "enabled" : "disabled");
719 		}
720 	}
721 
722 	/* Screen Brightness Level P8XXX */
723 	if(sc->gbls.exists) {
724 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
725                 sc->gbls.name, &(sc->gbls.value)))) {
726                         device_printf(sc->dev, "Couldn't query P8XXX brightness level\n");
727                         return (FALSE);
728                 }
729 		if (changed & BRIGHT_CHANGED) {
730 			/* No state to record here. */
731 
732 			/* Clear the modification bit */
733 			sc->gbls.value &= BRIGHTNESS_SETTING_BITS;
734 
735 			/* Set the value in case it is not hardware controlled */
736 			acpi_fujitsu_method_set(sc, METHOD_GBLS, sc->gbls.value);
737 
738 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
739 
740 			ACPI_VPRINT(sc->dev, acpi_sc, "P8XXX Brightness level is now %d\n",
741 			sc->gbls.value);
742                 }
743 	}
744 
745 	/* Screen Brightness Level */
746 	if(sc->gbll.exists) {
747 		if (ACPI_FAILURE(acpi_GetInteger(sc->handle,
748 		sc->gbll.name, &(sc->gbll.value)))) {
749 			device_printf(sc->dev, "Couldn't query brightness level\n");
750 			return (FALSE);
751 		}
752 
753 		if (changed & BRIGHT_CHANGED) {
754 			/* No state to record here. */
755 
756 			/* Clear the modification bit */
757 			sc->gbll.value &= BRIGHTNESS_SETTING_BITS;
758 
759 			acpi_UserNotify("FUJITSU", sc->handle, FN_LCD_BRIGHTNESS);
760 
761 			ACPI_VPRINT(sc->dev, acpi_sc, "Brightness level is now %d\n",
762 			sc->gbll.value);
763 		}
764 	}
765 
766 	sc->lastValChanged = changed;
767 	return (TRUE);
768 }
769