fade_saver.c revision 40885
16628Ssos/*- 239287Ssos * Copyright (c) 1995-1998 S�ren Schmidt 36628Ssos * All rights reserved. 46628Ssos * 56628Ssos * Redistribution and use in source and binary forms, with or without 66628Ssos * modification, are permitted provided that the following conditions 76628Ssos * are met: 86628Ssos * 1. Redistributions of source code must retain the above copyright 939287Ssos * notice, this list of conditions and the following disclaimer, 1039287Ssos * without modification, immediately at the beginning of the file. 116628Ssos * 2. Redistributions in binary form must reproduce the above copyright 126628Ssos * notice, this list of conditions and the following disclaimer in the 136628Ssos * documentation and/or other materials provided with the distribution. 146628Ssos * 3. The name of the author may not be used to endorse or promote products 1539287Ssos * derived from this software without specific prior written permission. 166628Ssos * 176628Ssos * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 186628Ssos * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 196628Ssos * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 206628Ssos * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 216628Ssos * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 226628Ssos * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236628Ssos * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246628Ssos * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256628Ssos * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 266628Ssos * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276628Ssos * 2840885Speter * $Id: fade_saver.c,v 1.14 1998/09/17 19:40:30 sos Exp $ 296628Ssos */ 306628Ssos 316628Ssos#include <sys/param.h> 326628Ssos#include <sys/systm.h> 3340885Speter#include <sys/kernel.h> 3440885Speter#include <sys/module.h> 3527427Syokota 3627427Syokota#include <i386/isa/isa.h> 3727427Syokota 386628Ssos#include <saver.h> 396628Ssos 408871Srgrimesstatic void 416628Ssosfade_saver(int blank) 426628Ssos{ 436628Ssos static int count = 0; 4439428Ssos u_char pal[256*3]; 456628Ssos int i; 466628Ssos 476628Ssos if (blank) { 486628Ssos scrn_blanked = 1; 4939428Ssos cur_console->status |= SAVER_RUNNING; 5030095Syokota switch (crtc_type) { 5130095Syokota case KD_VGA: 5230095Syokota if (count < 64) { 5339428Ssos pal[0] = pal[1] = pal[2] = 0; 5439428Ssos for (i = 3; i < 256*3; i++) { 5539428Ssos if (palette[i] - count > 60) 5639428Ssos pal[i] = palette[i] - count; 5730095Syokota else 5839428Ssos pal[i] = 60; 5930095Syokota } 6039428Ssos load_palette(cur_console, pal); 6130095Syokota count++; 626628Ssos } 6330095Syokota break; 6430095Syokota case KD_EGA: 6530095Syokota /* not yet done XXX */ 6630095Syokota break; 6730095Syokota case KD_CGA: 6830095Syokota outb(crtc_addr + 4, 0x25); 6930095Syokota break; 7030095Syokota case KD_MONO: 7130095Syokota case KD_HERCULES: 7230095Syokota outb(crtc_addr + 4, 0x21); 7330095Syokota break; 7430095Syokota default: 7530095Syokota break; 766628Ssos } 776628Ssos } 786628Ssos else { 7930095Syokota switch (crtc_type) { 8030095Syokota case KD_VGA: 8139287Ssos load_palette(cur_console, palette); 8230095Syokota count = 0; 8330095Syokota break; 8430095Syokota case KD_EGA: 8530095Syokota /* not yet done XXX */ 8630095Syokota break; 8730095Syokota case KD_CGA: 8830095Syokota outb(crtc_addr + 4, 0x2d); 8930095Syokota break; 9030095Syokota case KD_MONO: 9130095Syokota case KD_HERCULES: 9230095Syokota outb(crtc_addr + 4, 0x29); 9330095Syokota break; 9430095Syokota default: 9530095Syokota break; 9630095Syokota } 9739428Ssos cur_console->status &= ~SAVER_RUNNING; 9830095Syokota scrn_blanked = 0; 996628Ssos } 1006628Ssos} 1016628Ssos 10212276Sbdestatic int 10340885Speterfade_saver_load(void) 1046628Ssos{ 10530095Syokota switch (crtc_type) { 10630095Syokota case KD_MONO: 10730095Syokota case KD_HERCULES: 10830095Syokota case KD_CGA: 10930095Syokota /* 11030095Syokota * `fade' saver is not fully implemented for MDA and CGA. 11130095Syokota * It simply blanks the display instead. 11230095Syokota */ 11330095Syokota case KD_VGA: 11430095Syokota break; 11530095Syokota case KD_EGA: 11630095Syokota /* EGA is yet to be supported */ 11730095Syokota default: 11830095Syokota return ENODEV; 11930095Syokota } 12027427Syokota return add_scrn_saver(fade_saver); 1216628Ssos} 1226628Ssos 12312276Sbdestatic int 12440885Speterfade_saver_unload(void) 1256628Ssos{ 12627427Syokota return remove_scrn_saver(fade_saver); 1276628Ssos} 1286628Ssos 12940885SpeterSAVER_MODULE(fade_saver); 130