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/*-
* Copyright (c) 1995-1998 Søren Schmidt
* 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,
* without modification, immediately at the beginning of the file.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $Id: green_saver.c,v 1.14 1998/11/04 03:49:38 peter Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/fb/vgareg.h>
#include <i386/isa/isa.h>
#include <saver.h>
static int
green_saver(video_adapter_t *adp, int blank)
{
int crtc_addr;
u_char val;
crtc_addr = adp->va_crtc_addr;
if (blank) {
switch (adp->va_type) {
case KD_VGA:
outb(TSIDX, 0x01); val = inb(TSREG);
outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
outb(crtc_addr, 0x17); val = inb(crtc_addr + 1);
outb(crtc_addr + 1, val & ~0x80);
break;
case KD_EGA:
/* not yet done XXX */
break;
case KD_CGA:
outb(crtc_addr + 4, 0x25);
break;
case KD_MONO:
case KD_HERCULES:
outb(crtc_addr + 4, 0x21);
break;
default:
break;
}
}
else {
switch (adp->va_type) {
case KD_VGA:
outb(TSIDX, 0x01); val = inb(TSREG);
outb(TSIDX, 0x01); outb(TSREG, val & 0xDF);
outb(crtc_addr, 0x17); val = inb(crtc_addr + 1);
outb(crtc_addr + 1, val | 0x80);
break;
case KD_EGA:
/* not yet done XXX */
break;
case KD_CGA:
outb(crtc_addr + 4, 0x2d);
break;
case KD_MONO:
case KD_HERCULES:
outb(crtc_addr + 4, 0x29);
break;
default:
break;
}
}
return 0;
}
static int
green_init(video_adapter_t *adp)
{
switch (adp->va_type) {
case KD_MONO:
case KD_HERCULES:
case KD_CGA:
/*
* `green' saver is not fully implemented for MDA and CGA.
* It simply blanks the display instead.
*/
case KD_VGA:
break;
case KD_EGA:
/* EGA is yet to be supported */
default:
return ENODEV;
}
return 0;
}
static int
green_term(video_adapter_t *adp)
{
return 0;
}
static scrn_saver_t green_module = {
"green_saver", green_init, green_term, green_saver, NULL,
};
SAVER_MODULE(green_saver, green_module);
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