[src/trunk]: src/sys/arch/i386/acpi use acpi notify mechanism if possible.

[yamt <yamt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a62cf13b2bb3
branches:  trunk
changeset: 546240:a62cf13b2bb3
user:      yamt <yamt%NetBSD.org@localhost>
date:      Wed Apr 23 15:48:35 2003 +0000

description:
use acpi notify mechanism if possible.
XXX i'm not sure if there're PCs that actually need to fall back to polling.

diffstat:

 sys/arch/i386/acpi/vald_acpi.c |  46 +++++++++++++++++++++++++++++++++--------
 1 files changed, 37 insertions(+), 9 deletions(-)

diffs (80 lines):

diff -r bd33edb4412d -r a62cf13b2bb3 sys/arch/i386/acpi/vald_acpi.c
--- a/sys/arch/i386/acpi/vald_acpi.c    Wed Apr 23 14:21:07 2003 +0000
+++ b/sys/arch/i386/acpi/vald_acpi.c    Wed Apr 23 15:48:35 2003 +0000
@@ -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_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 @@
        /* 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);
 }
 
 /*