Index: acpi_sony.c
===================================================================
--- acpi_sony.c	(revision 248950)
+++ acpi_sony.c	(working copy)
@@ -61,6 +61,8 @@
 
 struct acpi_sony_softc {
 	int pid;
+	device_t	dev;
+	ACPI_HANDLE	handle;
 };
 static struct acpi_sony_name_list
 {
@@ -84,10 +86,24 @@
 	{ NULL, NULL, NULL }
 };
 
+/* Event Codes */
+#define	SONY_EVENT_FNKEY			0x92
+#define	SONY_EVENT_BRIGHTNESS_DOWN_PRESSED	0x85
+#define	SONY_EVENT_BRIGHTNESS_DOWN_RELEASE	0x05
+#define	SONY_EVENT_BRIGHTNESS_UP_PRESSED	0x86
+#define	SONY_EVENT_BRIGHTNESS_UP_RELEASED	0x06
+#define	SONY_EVENT_DISPLAYSWITCH_PRESSED	0x87
+#define	SONY_EVENT_DISPLAYSWITCH_RELEASED	0x07
+#define	SONY_NOTIFY_ZOOM_PRESSED		0x8a
+#define	SONY_NOTIFY_ZOOM_RELEASED		0x0a
+#define	SONY_NOTIFY_SUSPEND_PRESSED		0x8c
+#define	SONY_NOTIFY_SUSPEND_RELEASED		0x0c
+
 static int	acpi_sony_probe(device_t dev);
 static int	acpi_sony_attach(device_t dev);
 static int 	acpi_sony_detach(device_t dev);
 static int	sysctl_acpi_sony_gen_handler(SYSCTL_HANDLER_ARGS);
+static void	acpi_sony_notify(ACPI_HANDLE h, UINT32 notify, void *context);
 
 static device_method_t acpi_sony_methods[] = {
 	/* Device interface */
@@ -130,7 +146,9 @@
 	int i;
 
 	sc = device_get_softc(dev);
-	acpi_GetInteger(acpi_get_handle(dev), ACPI_SONY_GET_PID, &sc->pid);
+	sc->dev = dev;
+	sc->handle = acpi_get_handle(dev);
+	acpi_GetInteger(sc->handle, ACPI_SONY_GET_PID, &sc->pid);
 	device_printf(dev, "PID %x\n", sc->pid);
 	for (i = 0 ; acpi_sony_oids[i].nodename != NULL; i++){
 		SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
@@ -140,29 +158,45 @@
 		    dev, i, sysctl_acpi_sony_gen_handler, "I",
 		    acpi_sony_oids[i].comment);
 	}
+
+	/*
+	 * Initialize Fn keys, just in case we don't find a SNY6001 device.
+	 */
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN02", 0x04)))
+		device_printf(dev, "1 \n");
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN07", 0x02)))
+		device_printf(dev, "2 \n");
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN02", 0x10)))
+		device_printf(dev, "3 \n");
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN07", 0x00)))
+		device_printf(dev, "4 \n");
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN03", 0x02)))
+		device_printf(dev, "5 \n");
+	if (ACPI_SUCCESS(acpi_SetInteger(sc->handle, "SN07", 0x101)))
+		device_printf(dev, "6 \n");
+	
+	/*
+	 * Handle notifications.
+	 */
+	AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
+	    acpi_sony_notify, dev);
 	return (0);
 }
 
 static int 
 acpi_sony_detach(device_t dev)
 {
-	return (0);
-}
+        struct acpi_sony_softc *sc;
 
-#if 0
-static int
-acpi_sony_suspend(device_t dev)
-{
-	struct acpi_sony_softc *sc = device_get_softc(dev);
-	return (0);
-}
+	sc = device_get_softc(dev);
 
-static int
-acpi_sony_resume(device_t dev)
-{
+	/*
+	 * Remove notify handler.
+	 */
+	AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY,
+	    acpi_sony_notify);
 	return (0);
 }
-#endif
 
 static int 
 sysctl_acpi_sony_gen_handler(SYSCTL_HANDLER_ARGS)
@@ -180,3 +214,12 @@
 	    acpi_sony_oids[function].setmethod, val);
 	return (0);
 }
+
+static void
+acpi_sony_notify(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+	struct acpi_sony_softc *sc;
+
+	sc = device_get_softc((device_t)context);
+	device_printf((device_t)context, "notify %x \n", notify);
+}