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/* $OpenBSD: ite_blank.c,v 1.1 1999/11/05 17:15:34 espie Exp $ */
/*-
* Copyright (c) 1999 Marc Espie.
*
* 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 by Marc Espie for the OpenBSD
* Project.
*
* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT 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 OPENBSD
* PROJECT 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.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <amiga/dev/grfioctl.h>
#include <amiga/dev/grfvar.h>
#include <amiga/dev/itevar.h>
#include <amiga/dev/ite_blank.h>
#define SUBR_BLANK(ip, mode) ((ip)->grf->g_mode((ip)->grf, GM_GRFIOCTL, &(mode), GRFIOCBLANK, (ip)->grf->g_grfdev ))
void ite_blank __P((void *));
void ite_unblank __P((struct ite_softc *));
static int blanked_screen = 0;
static int blank_enabled = 0;
static long last_schedule = 0L;
int blank_time = 600;
void
ite_blank(arg)
void *arg;
{
struct ite_softc *kbd = arg;
int data = GRFIOCBLANK_DARK;
SUBR_BLANK(kbd, data);
blanked_screen = 1;
}
void
ite_unblank(kbd)
struct ite_softc *kbd;
{
if (blanked_screen) {
int data = GRFIOCBLANK_LIVE;
SUBR_BLANK(kbd, data);
blanked_screen = 0;
}
}
void
ite_restart_blanker(kbd)
struct ite_softc *kbd;
{
int x = spltty();
/* steal timing trick from pcvt */
if (last_schedule != time.tv_sec) {
if (blank_enabled && !blanked_screen)
untimeout(ite_blank, kbd);
if (blank_enabled && blank_time)
timeout(ite_blank, kbd, blank_time * hz);
last_schedule = time.tv_sec;
}
ite_unblank(kbd);
splx(x);
}
void
ite_reset_blanker(kbd)
struct ite_softc *kbd;
{
last_schedule = 0L;
ite_restart_blanker(kbd);
}
void
ite_disable_blanker(kbd)
struct ite_softc *kbd;
{
int x = spltty();
untimeout(ite_blank, kbd);
blank_enabled = 0;
ite_unblank(kbd);
splx(x);
}
void
ite_enable_blanker(kbd)
struct ite_softc *kbd;
{
blank_enabled = 1;
ite_reset_blanker(kbd);
}
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