1 /* $NetBSD: abtn.c,v 1.7 2003/03/05 16:52:16 soren Exp $ */ 2 3 /*- 4 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 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 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/device.h> 31 #include <sys/systm.h> 32 33 #include <macppc/dev/adbvar.h> 34 #include <macppc/dev/pm_direct.h> 35 36 #define NVRAM_BRIGHTNESS 0x140e 37 #define ABTN_HANDLER_ID 31 38 39 #define BUTTON_LOUDER 0x06 40 #define BUTTON_SOFTER 0x07 41 #define BUTTON_MUTE 0x08 42 #define BUTTON_BRIGHTER 0x09 43 #define BUTTON_DIMMER 0x0a 44 #define BUTTON_EJECT 0x0b 45 #define BUTTON_DISPLAY 0x0c 46 #define BUTTON_KEYPAD 0x7f 47 #define BUTTON_DEPRESS 0x80 48 49 struct abtn_softc { 50 struct device sc_dev; 51 52 int origaddr; /* ADB device type */ 53 int adbaddr; /* current ADB address */ 54 int handler_id; 55 56 int brightness; /* backlight brightness */ 57 int volume; /* speaker volume (not yet) */ 58 }; 59 60 static int abtn_match __P((struct device *, struct cfdata *, void *)); 61 static void abtn_attach __P((struct device *, struct device *, void *)); 62 static void abtn_adbcomplete __P((caddr_t, caddr_t, int)); 63 64 CFATTACH_DECL(abtn, sizeof(struct abtn_softc), 65 abtn_match, abtn_attach, NULL, NULL); 66 67 int 68 abtn_match(parent, cf, aux) 69 struct device *parent; 70 struct cfdata *cf; 71 void *aux; 72 { 73 struct adb_attach_args *aa = aux; 74 75 if (aa->origaddr == ADBADDR_MISC && 76 aa->handler_id == ABTN_HANDLER_ID) 77 return 1; 78 79 return 0; 80 } 81 82 void 83 abtn_attach(parent, self, aux) 84 struct device *parent, *self; 85 void *aux; 86 { 87 struct abtn_softc *sc = (struct abtn_softc *)self; 88 struct adb_attach_args *aa = aux; 89 ADBSetInfoBlock adbinfo; 90 int bright; 91 92 printf("buttons\n"); 93 94 bright = pm_read_nvram(NVRAM_BRIGHTNESS); 95 if (bright != 0) 96 pm_set_brightness(bright); 97 sc->brightness = bright; 98 99 sc->origaddr = aa->origaddr; 100 sc->adbaddr = aa->adbaddr; 101 sc->handler_id = aa->handler_id; 102 103 adbinfo.siServiceRtPtr = (Ptr)abtn_adbcomplete; 104 adbinfo.siDataAreaAddr = (caddr_t)sc; 105 106 SetADBInfo(&adbinfo, sc->adbaddr); 107 } 108 109 void 110 abtn_adbcomplete(buffer, data, adb_command) 111 caddr_t buffer, data; 112 int adb_command; 113 { 114 struct abtn_softc *sc = (struct abtn_softc *)data; 115 u_int cmd; 116 117 cmd = buffer[1]; 118 119 if (cmd >= BUTTON_DEPRESS) 120 return; 121 122 switch (cmd) { 123 case BUTTON_DIMMER: 124 sc->brightness -= 8; 125 if (sc->brightness < 8) 126 sc->brightness = 8; 127 pm_set_brightness(sc->brightness); 128 pm_write_nvram(NVRAM_BRIGHTNESS, sc->brightness); 129 break; 130 131 case BUTTON_BRIGHTER: 132 sc->brightness += 8; 133 if (sc->brightness > 0x78) 134 sc->brightness = 0x78; 135 pm_set_brightness(sc->brightness); 136 pm_write_nvram(NVRAM_BRIGHTNESS, sc->brightness); 137 break; 138 139 case BUTTON_MUTE: 140 case BUTTON_SOFTER: 141 case BUTTON_LOUDER: 142 printf("%s: volume setting not implemented\n", 143 sc->sc_dev.dv_xname); 144 break; 145 case BUTTON_DISPLAY: 146 printf("%s: display selection not implemented\n", 147 sc->sc_dev.dv_xname); 148 break; 149 case BUTTON_EJECT: 150 printf("%s: eject not implemented\n", 151 sc->sc_dev.dv_xname); 152 break; 153 154 /* The keyboard gets wacky when in keypad mode. */ 155 case BUTTON_KEYPAD: 156 break; 157 158 default: 159 printf("%s: unknown button 0x%x\n", 160 sc->sc_dev.dv_xname, cmd); 161 } 162 } 163