NetBSD-5.0.2/sys/arch/i386/acpi/vald_acpi.c
/* $NetBSD: vald_acpi.c,v 1.29 2008/05/04 16:16:56 xtraeme Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Masanori Kanaoka.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright 2001 Bill Sommerfeld.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* #define VALD_ACPI_DEBUG */
/*
* ACPI VALD Driver for Toshiba Libretto L3.
* This driver is based on acpibat driver.
*/
/*
* Obtain information of Toshiba "GHCI" Method from next URL.
* http://www.buzzard.org.uk/toshiba/docs.html
* http://memebeam.org/toys/ToshibaAcpiDriver
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vald_acpi.c,v 1.29 2008/05/04 16:16:56 xtraeme Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#define GHCI_WORDS 6
#define GHCI_FIFO_EMPTY 0x8c00
#define GHCI_NOT_SUPPORT 0x8000
#define GHCI_BACKLIGHT 0x0002
#define GHCI_ACADAPTOR 0x0003
#define GHCI_FAN 0x0004
#define GHCI_SYSTEM_EVENT_FIFO 0x0016
#define GHCI_DISPLAY_DEVICE 0x001C
#define GHCI_HOTKEY_EVENT 0x001E
#define GHCI_ON 0x0001
#define GHCI_OFF 0x0000
#define GHCI_ENABLE 0x0001
#define GHCI_DISABLE 0x0000
#define GHCI_CRT 0x0002
#define GHCI_LCD 0x0001
struct vald_acpi_softc {
device_t sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_flags; /* see below */
ACPI_HANDLE lcd_handle; /* lcd handle */
int *lcd_level; /* lcd brightness table */
int lcd_num; /* size of lcd brightness table */
int lcd_index; /* index of lcd brightness table */
ACPI_INTEGER sc_ac_status; /* AC adaptor status when attach */
};
static const char * const vald_acpi_hids[] = {
"TOS6200",
NULL
};
#define AVALD_F_VERBOSE 0x01 /* verbose events */
#define LIBRIGHT_HOLD 0x00
#define LIBRIGHT_UP 0x01
#define LIBRIGHT_DOWN 0x02
static int vald_acpi_match(device_t, cfdata_t, void *);
static void vald_acpi_attach(device_t, device_t, void *);
static void vald_acpi_event(void *);
static void vald_acpi_notify_handler(ACPI_HANDLE, UINT32, void *);
#define ACPI_NOTIFY_ValdStatusChanged 0x80
static ACPI_STATUS vald_acpi_ghci_get(struct vald_acpi_softc *, UINT32,
UINT32 *, UINT32 *);
static ACPI_STATUS vald_acpi_ghci_set(struct vald_acpi_softc *, UINT32,
UINT32, UINT32 *);
static ACPI_STATUS vald_acpi_libright_get_bus(ACPI_HANDLE, UINT32, void *,
void **);
static void vald_acpi_libright_get(struct vald_acpi_softc *);
static void vald_acpi_libright_set(struct vald_acpi_softc *, int);
static void vald_acpi_video_switch(struct vald_acpi_softc *);
static void vald_acpi_fan_switch(struct vald_acpi_softc *);
static ACPI_STATUS vald_acpi_bcm_set(ACPI_HANDLE, UINT32);
static ACPI_STATUS vald_acpi_dssx_set(UINT32);
CFATTACH_DECL_NEW(vald_acpi, sizeof(struct vald_acpi_softc),
vald_acpi_match, vald_acpi_attach, NULL, NULL);
/*
* vald_acpi_match:
*
* Autoconfiguration `match' routine.
*/
static int
vald_acpi_match(device_t parent, cfdata_t match, void *aux)
{
struct acpi_attach_args *aa = aux;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return (0);
return (acpi_match_hid(aa->aa_node->ad_devinfo, vald_acpi_hids));
}
/*
* vald_acpi_attach:
*
* Autoconfiguration `attach' routine.
*/
static void
vald_acpi_attach(device_t parent, device_t self, void *aux)
{
struct vald_acpi_softc *sc = device_private(self);
struct acpi_attach_args *aa = aux;
ACPI_STATUS rv;
UINT32 value, result;
aprint_naive(": Toshiba VALD\n");
aprint_normal(": Toshiba VALD\n");
sc->sc_node = aa->aa_node;
sc->sc_dev = self;
/* Get AC adaptor status via _PSR. */
rv = acpi_eval_integer(ACPI_ROOT_OBJECT, "\\_SB_.ADP1._PSR",
&sc->sc_ac_status);
if (ACPI_FAILURE(rv))
aprint_error_dev(self, "Unable to evaluate _PSR: %s\n",
AcpiFormatException(rv));
else
aprint_verbose_dev(self, "AC adaptor %sconnected\n",
(sc->sc_ac_status == 0 ? "not ": ""));
/* Get LCD backlight status. */
rv = vald_acpi_ghci_get(sc, GHCI_BACKLIGHT, &value, &result);
if (ACPI_SUCCESS(rv)) {
if (result != 0)
aprint_error_dev(self, "can't get backlight status error=%d\n",
result);
else
aprint_verbose_dev(self, "LCD backlight %s\n",
((value == GHCI_ON) ? "on" : "off"));
}
/* Enable SystemEventFIFO,HotkeyEvent */
rv = vald_acpi_ghci_set(sc, GHCI_SYSTEM_EVENT_FIFO, GHCI_ENABLE,
&result);
if (ACPI_SUCCESS(rv) && result != 0)
aprint_error_dev(self, "can't enable SystemEventFIFO error=%d\n",
result);
rv = vald_acpi_ghci_set(sc, GHCI_HOTKEY_EVENT, GHCI_ENABLE, &result);
if (ACPI_SUCCESS(rv) && result != 0)
aprint_error_dev(self, "can't enable HotkeyEvent error=%d\n",
result);
/* Check SystemFIFO events. */
vald_acpi_event(sc);
/* Get LCD brightness level via _BCL. */
vald_acpi_libright_get(sc);
/* Set LCD brightness level via _BCM. */
vald_acpi_libright_set(sc, LIBRIGHT_HOLD);
/* enable vald notify */
AcpiEvaluateObject(sc->sc_node->ad_handle, "ENAB", NULL, NULL);
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, vald_acpi_notify_handler, sc);
if (ACPI_FAILURE(rv))
aprint_error_dev(self, "can't install DEVICE NOTIFY handler: %s\n",
AcpiFormatException(rv));
}
/*
* vald_acpi_notify_handler:
*
* Notify handler.
*/
static void
vald_acpi_notify_handler(ACPI_HANDLE handle, UINT32 notify,
void *context)
{
struct vald_acpi_softc *sc = context;
ACPI_STATUS rv;
switch (notify) {
case ACPI_NOTIFY_ValdStatusChanged:
#ifdef VALD_ACPI_DEBUG
printf("%s: received ValdStatusChanged message.\n",
device_xname(sc->sc_dev));
#endif /* VALD_ACPI_DEBUG */
rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, vald_acpi_event, sc);
if (ACPI_FAILURE(rv))
aprint_error_dev(sc->sc_dev, "WARNING: unable to queue vald change "
"event: %s\n", AcpiFormatException(rv));
break;
default:
aprint_error_dev(sc->sc_dev, "received unknown notify messages: 0x%x\n",
notify);
break;
}
}
/*
* vald_acpi_event:
*
* Check hotkey event and do it, if event occur.
*/
static void
vald_acpi_event(void *arg)
{
struct vald_acpi_softc *sc = arg;
ACPI_STATUS rv;
UINT32 value, result;
while(1) {
rv = vald_acpi_ghci_get(sc, GHCI_SYSTEM_EVENT_FIFO, &value,
&result);
if (ACPI_SUCCESS(rv) && result == 0) {
#ifdef VALD_ACPI_DEBUG
printf("%s: System Event %x\n", device_xname(sc->sc_dev),
value);
#endif
switch (value) {
case 0x1c3: /* Fn + F9 */
break;
case 0x1c2: /* Fn + F8 */
vald_acpi_fan_switch(sc);
break;
case 0x1c1: /* Fn + F7 */
vald_acpi_libright_set(sc, LIBRIGHT_UP);
break;
case 0x1c0: /* Fn + F6 */
vald_acpi_libright_set(sc, LIBRIGHT_DOWN);
break;
case 0x1bf: /* Fn + F5 */
vald_acpi_video_switch(sc);
break;
default:
break;
}
}
if (ACPI_FAILURE(rv) || result == GHCI_FIFO_EMPTY)
break;
}
}
/*
* vald_acpi_ghci_get:
*
* Get value via "GHCI" Method.
*/
static ACPI_STATUS
vald_acpi_ghci_get(struct vald_acpi_softc *sc,
UINT32 reg, UINT32 *value, UINT32 *result)
{
ACPI_STATUS rv;
ACPI_OBJECT Arg[GHCI_WORDS];
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT *param, *PrtElement;
ACPI_BUFFER buf;
int i;
for (i = 0; i < GHCI_WORDS; i++) {
Arg[i].Type = ACPI_TYPE_INTEGER;
Arg[i].Integer.Value = 0;
}
Arg[0].Integer.Value = 0xfe00;
Arg[1].Integer.Value = reg;
Arg[2].Integer.Value = 0;
ArgList.Count = GHCI_WORDS;
ArgList.Pointer = Arg;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
rv = AcpiEvaluateObject(sc->sc_node->ad_handle,
"GHCI", &ArgList, &buf);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(sc->sc_dev, "failed to evaluate GHCI: %s\n",
AcpiFormatException(rv));
return (rv);
}
*result = GHCI_NOT_SUPPORT;
*value = 0;
param = (ACPI_OBJECT *)buf.Pointer;
if (param->Type == ACPI_TYPE_PACKAGE) {
PrtElement = param->Package.Elements;
if (PrtElement->Type == ACPI_TYPE_INTEGER)
*result = PrtElement->Integer.Value;
PrtElement++;
PrtElement++;
if (PrtElement->Type == ACPI_TYPE_INTEGER)
*value = PrtElement->Integer.Value;
}
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (rv);
}
/*
* vald_acpi_ghci_set:
*
* Set value via "GHCI" Method.
*/
static ACPI_STATUS
vald_acpi_ghci_set(struct vald_acpi_softc *sc,
UINT32 reg, UINT32 value, UINT32 *result)
{
ACPI_STATUS rv;
ACPI_OBJECT Arg[GHCI_WORDS];
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT *param, *PrtElement;
ACPI_BUFFER buf;
int i;
for (i = 0; i < GHCI_WORDS; i++) {
Arg[i].Type = ACPI_TYPE_INTEGER;
Arg[i].Integer.Value = 0;
}
Arg[0].Integer.Value = 0xff00;
Arg[1].Integer.Value = reg;
Arg[2].Integer.Value = value;
ArgList.Count = GHCI_WORDS;
ArgList.Pointer = Arg;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
rv = AcpiEvaluateObject(sc->sc_node->ad_handle,
"GHCI", &ArgList, &buf);
if (ACPI_FAILURE(rv)) {
aprint_error_dev(sc->sc_dev, "failed to evaluate GHCI: %s\n",
AcpiFormatException(rv));
return (rv);
}
*result = GHCI_NOT_SUPPORT;
param = (ACPI_OBJECT *)buf.Pointer;
if (param->Type == ACPI_TYPE_PACKAGE) {
PrtElement = param->Package.Elements;
if (PrtElement->Type == ACPI_TYPE_INTEGER)
*result = PrtElement->Integer.Value;
}
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (rv);
}
/*
* vald_acpi_libright_get_bus:
*
* Get LCD brightness level via "_BCL" Method,
* and save this handle.
*/
static ACPI_STATUS
vald_acpi_libright_get_bus(ACPI_HANDLE handle, UINT32 level,
void *context, void **status)
{
struct vald_acpi_softc *sc = context;
ACPI_STATUS rv;
ACPI_BUFFER buf;
ACPI_OBJECT *param, *PrtElement;
int i, *pi;
rv = acpi_eval_struct(handle, "_BCL", &buf);
if (ACPI_FAILURE(rv))
return (AE_OK);
sc->lcd_handle = handle;
param = (ACPI_OBJECT *)buf.Pointer;
if (param->Type == ACPI_TYPE_PACKAGE) {
printf("_BCL retrun: %d packages\n", param->Package.Count);
sc->lcd_num = param->Package.Count;
sc->lcd_level = AcpiOsAllocate(sizeof(int) * sc->lcd_num);
if (sc->lcd_level == NULL) {
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (AE_NO_MEMORY);
}
PrtElement = param->Package.Elements;
pi = sc->lcd_level;
for (i = 0; i < param->Package.Count; i++) {
if (PrtElement->Type == ACPI_TYPE_INTEGER) {
*pi = (unsigned)PrtElement->Integer.Value;
PrtElement++;
pi++;
}
}
if (sc->sc_ac_status == 1) /* AC adaptor on when attach */
sc->lcd_index = sc->lcd_num -1; /* MAX Brightness */
else
sc->lcd_index = 3;
#ifdef ACPI_DEBUG
pi = sc->lcd_level;
printf("\t Full Power Level: %d\n", *pi);
printf("\t on Battery Level: %d\n", *(pi+1));
printf("\t Possible Level: ");
for (i = 2;i < sc->lcd_num; i++)
printf(" %d", *(pi+i));
printf("\n");
#endif
}
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (AE_OK);
}
/*
* vald_acpi_libright_get:
*
* Search node that have "_BCL" Method.
*/
static void
vald_acpi_libright_get(struct vald_acpi_softc *sc)
{
ACPI_HANDLE parent;
ACPI_STATUS rv;
aprint_verbose_dev(sc->sc_dev, "get LCD brightness via _BCL\n");
#ifdef ACPI_DEBUG
printf("acpi_libright_get: start\n");
#endif
rv = AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &parent);
if (ACPI_FAILURE(rv))
return;
AcpiWalkNamespace(ACPI_TYPE_DEVICE, parent, 100,
vald_acpi_libright_get_bus, sc, NULL);
}
/*
* vald_acpi_libright_set:
*
* Figure up next status and set it.
*/
static void
vald_acpi_libright_set(struct vald_acpi_softc *sc, int UpDown)
{
ACPI_STATUS rv;
int *pi;
UINT32 backlight, backlight_new, result, bright;
/* Skip,if it does not support _BCL. */
if (sc->lcd_handle == NULL)
return;
/* Get LCD backlight status. */
rv = vald_acpi_ghci_get(sc, GHCI_BACKLIGHT, &backlight, &result);
if (ACPI_FAILURE(rv) || result != 0)
return;
/* Figure up next status. */
backlight_new = backlight;
if (UpDown == LIBRIGHT_UP) {
if (backlight == 1)
sc->lcd_index++;
else {
/* backlight on */
backlight_new = 1;
sc->lcd_index = 2;
}
} else if (UpDown == LIBRIGHT_DOWN) {
if ((backlight == 1) && (sc->lcd_index > 2))
sc->lcd_index--;
else {
/* backlight off */
backlight_new = 0;
sc->lcd_index = 2;
}
}
/* Check index value. */
if (sc->lcd_index < 2)
sc->lcd_index = 2; /* index Minium Value */
if (sc->lcd_index >= sc->lcd_num)
sc->lcd_index = sc->lcd_num - 1;
/* Set LCD backlight,if status is changed. */
if (backlight_new != backlight) {
rv = vald_acpi_ghci_set(sc, GHCI_BACKLIGHT, backlight_new,
&result);
if (ACPI_SUCCESS(rv) && result != 0)
aprint_error_dev(sc->sc_dev, "can't set LCD backlight %s error=%x\n",
((backlight_new == 1) ? "on" : "off"), result);
}
if (backlight_new == 1) {
pi = sc->lcd_level;
bright = *(pi + sc->lcd_index);
rv = vald_acpi_bcm_set(sc->lcd_handle, bright);
if (ACPI_FAILURE(rv))
aprint_error_dev(sc->sc_dev, "unable to evaluate _BCM: %s\n",
AcpiFormatException(rv));
} else {
bright = 0;
}
#ifdef ACPI_DEBUG
printf("LCD bright");
printf(" %s", ((UpDown == LIBRIGHT_UP) ? "up":""));
printf("%s\n", ((UpDown == LIBRIGHT_DOWN) ? "down":""));
printf("\t acpi_libright_set: Set brightness to %d%%\n", bright);
#endif
}
/*
* vald_acpi_video_switch:
*
* Get video status(LCD/CRT) and set new video status.
*/
static void
vald_acpi_video_switch(struct vald_acpi_softc *sc)
{
ACPI_STATUS rv;
UINT32 value, result;
/* Get video status. */
rv = vald_acpi_ghci_get(sc, GHCI_DISPLAY_DEVICE, &value, &result);
if (ACPI_FAILURE(rv))
return;
if (result != 0) {
aprint_error_dev(sc->sc_dev, "can't get video status error=%x\n",
result);
return;
}
#ifdef ACPI_DEBUG
printf("Toggle LCD/CRT\n");
printf("\t Before switch, video status: %s",
(((value & GHCI_LCD) == GHCI_LCD) ? "LCD" : ""));
printf("%s\n", (((value & GHCI_CRT) == GHCI_CRT) ? "CRT": ""));
#endif
/* Toggle LCD/CRT */
if (value & GHCI_LCD) {
value &= ~GHCI_LCD;
value |= GHCI_CRT;
} else if (value & GHCI_CRT){
value &= ~GHCI_CRT;
value |= GHCI_LCD;
}
rv = vald_acpi_dssx_set(value);
if (ACPI_FAILURE(rv))
aprint_error_dev(sc->sc_dev, "unable to evaluate DSSX: %s\n",
AcpiFormatException(rv));
}
/*
* vald_acpi_bcm_set:
*
* Set LCD brightness via "_BCM" Method.
*/
static ACPI_STATUS
vald_acpi_bcm_set(ACPI_HANDLE handle, UINT32 bright)
{
ACPI_STATUS rv;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST ArgList;
ArgList.Count = 1;
ArgList.Pointer = &Arg;
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = bright;
rv = AcpiEvaluateObject(handle, "_BCM", &ArgList, NULL);
return (rv);
}
/*
* vald_acpi_dssx_set:
*
* Set value via "\\_SB_.VALX.DSSX" Method.
*/
static ACPI_STATUS
vald_acpi_dssx_set(UINT32 value)
{
ACPI_STATUS rv;
ACPI_OBJECT Arg;
ACPI_OBJECT_LIST ArgList;
ArgList.Count = 1;
ArgList.Pointer = &Arg;
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = value;
rv = AcpiEvaluateObject(ACPI_ROOT_OBJECT, "\\_SB_.VALX.DSSX",
&ArgList, NULL);
return (rv);
}
/*
* vald_acpi_fan_switch:
*
* Get FAN status and set new FAN status.
*/
static void
vald_acpi_fan_switch(struct vald_acpi_softc *sc)
{
ACPI_STATUS rv;
UINT32 value, result;
/* Get FAN status */
rv = vald_acpi_ghci_get(sc, GHCI_FAN, &value, &result);
if (ACPI_FAILURE(rv))
return;
if (result != 0) {
aprint_error_dev(sc->sc_dev, "can't get FAN status error=%d\n",
result);
return;
}
#ifdef ACPI_DEBUG
printf("Toggle FAN on/off\n");
printf("\t Before toggle, FAN status %s\n",
(value == GHCI_OFF ? "off" : "on"));
#endif
/* Toggle FAN on/off */
if (value == GHCI_OFF)
value = GHCI_ON;
else
value = GHCI_OFF;
/* Set FAN new status. */
rv = vald_acpi_ghci_set(sc, GHCI_FAN, value, &result);
if (ACPI_FAILURE(rv))
return;
if (result != 0) {
aprint_error_dev(sc->sc_dev, "can't set FAN status error=%d\n",
result);
return;
}
#ifdef ACPI_DEBUG
printf("\t After toggle, FAN status %s\n",
(value == GHCI_OFF ? "off" : "on"));
#endif
}