1 /*- 2 * Copyright (c) 1995-1998 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $Id: blank_saver.c,v 1.14 1998/11/04 03:49:38 peter Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 36 #include <dev/fb/vgareg.h> 37 38 #include <i386/isa/isa.h> 39 40 #include <saver.h> 41 42 static int 43 blank_saver(video_adapter_t *adp, int blank) 44 { 45 u_char val; 46 if (blank) { 47 switch (adp->va_type) { 48 case KD_VGA: 49 outb(TSIDX, 0x01); val = inb(TSREG); 50 outb(TSIDX, 0x01); outb(TSREG, val | 0x20); 51 break; 52 case KD_EGA: 53 /* not yet done XXX */ 54 break; 55 case KD_CGA: 56 outb(adp->va_crtc_addr + 4, 0x25); 57 break; 58 case KD_MONO: 59 case KD_HERCULES: 60 outb(adp->va_crtc_addr + 4, 0x21); 61 break; 62 default: 63 break; 64 } 65 } 66 else { 67 switch (adp->va_type) { 68 case KD_VGA: 69 outb(TSIDX, 0x01); val = inb(TSREG); 70 outb(TSIDX, 0x01); outb(TSREG, val & 0xDF); 71 break; 72 case KD_EGA: 73 /* not yet done XXX */ 74 break; 75 case KD_CGA: 76 outb(adp->va_crtc_addr + 4, 0x2d); 77 break; 78 case KD_MONO: 79 case KD_HERCULES: 80 outb(adp->va_crtc_addr + 4, 0x29); 81 break; 82 default: 83 break; 84 } 85 } 86 return 0; 87 } 88 89 static int 90 blank_init(video_adapter_t *adp) 91 { 92 switch (adp->va_type) { 93 case KD_MONO: 94 case KD_HERCULES: 95 case KD_CGA: 96 case KD_VGA: 97 break; 98 case KD_EGA: 99 /* EGA is yet to be supported */ 100 default: 101 return ENODEV; 102 } 103 return 0; 104 } 105 106 static int 107 blank_term(video_adapter_t *adp) 108 { 109 return 0; 110 } 111 112 static scrn_saver_t blank_module = { 113 "blank_saver", blank_init, blank_term, blank_saver, NULL, 114 }; 115 116 SAVER_MODULE(blank_saver, blank_module); 117