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use acpi notify mechanism if possible. 

XXX i'm not sure if there're PCs that actually need to fall back to polling.
This commit is contained in:
yamt 2003-04-23 15:48:35 +00:00
parent f302f813f2
commit 5d60643560
1 changed files with 37 additions and 9 deletions
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46
sys/arch/i386/acpi/vald_acpi.c
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@ -1,4 +1,4 @@
/* $NetBSD: vald_acpi.c,v 1.5 2002/10/02 05:47:11 thorpej Exp $ */
/* $NetBSD: vald_acpi.c,v 1.6 2003/04/23 15:48:35 yamt Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
@ -83,7 +83,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vald_acpi.c,v 1.5 2002/10/02 05:47:11 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: vald_acpi.c,v 1.6 2003/04/23 15:48:35 yamt Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -147,6 +147,7 @@ void vald_acpi_attach(struct device *, struct device *, void *);
void vald_acpi_event(void *);
static void vald_acpi_tick(void *);
static void vald_acpi_notifyhandler(ACPI_HANDLE, UINT32, void *);
ACPI_STATUS vald_acpi_ghci_get(struct vald_acpi_softc *, UINT32, UINT32 *,
UINT32 *);
@ -250,19 +251,46 @@ vald_acpi_attach(struct device *parent, struct device *self, void *aux)
/* Check SystemFIFO events. */
vald_acpi_event(sc);
/*
* XXX poll hotkey event in the driver for now.
* in the future, when we have an API, let userland do this polling
*/
callout_init(&sc->sc_callout);
callout_reset(&sc->sc_callout, sc->sc_timer, vald_acpi_tick, 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 */
rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "ENAB", NULL, NULL);
if (rv == AE_OK) {
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, vald_acpi_notifyhandler, sc);
if (rv != AE_OK)
printf("%s: Can't install notify handler (%04x)\n",
sc->sc_dev.dv_xname, (uint)rv);
} else {
/*
* XXX poll hotkey event in the driver for now.
* in the future, when we have an API, let userland do this
* polling
*/
callout_init(&sc->sc_callout);
callout_reset(&sc->sc_callout, sc->sc_timer,
vald_acpi_tick, sc);
}
}
/*
* vald_acpi_notifyhandler:
*
* Notify handler.
*/
static void
vald_acpi_notifyhandler(ACPI_HANDLE handle, UINT32 value, void *context)
{
if (value == 0x80)
vald_acpi_event(context);
else
printf("vald_acpi_notifyhandler: unknown event: %04"
PRIu32 "\n", value);
}
/*