1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2011, Justin Hibbits. 5 * Copyright (c) 2002, Miodrag Vallat. 6 * Copyright (C) 1999 Tsubai Masanari. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * OpenBSD: abtn.c,v 1.12 2009/01/10 18:00:59 robert Exp 31 * NetBSD: abtn.c,v 1.1 1999/07/12 17:48:26 tsubai Exp 32 */ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/module.h> 37 #include <sys/kernel.h> 38 #include <sys/bus.h> 39 40 #include <machine/bus.h> 41 42 #include <dev/ofw/openfirm.h> 43 #include <machine/ofw_machdep.h> 44 45 #include <dev/adb/adb.h> 46 47 #define ABTN_HANDLER_ID 31 48 49 struct abtn_softc { 50 device_t sc_dev; 51 52 int handler_id; 53 }; 54 55 static int abtn_probe(device_t dev); 56 static int abtn_attach(device_t dev); 57 static u_int abtn_receive_packet(device_t dev, u_char status, 58 u_char command, u_char reg, int len, u_char *data); 59 60 static device_method_t abtn_methods[] = { 61 /* Device interface */ 62 DEVMETHOD(device_probe, abtn_probe), 63 DEVMETHOD(device_attach, abtn_attach), 64 DEVMETHOD(device_shutdown, bus_generic_shutdown), 65 DEVMETHOD(device_suspend, bus_generic_suspend), 66 DEVMETHOD(device_resume, bus_generic_resume), 67 68 /* ADB interface */ 69 DEVMETHOD(adb_receive_packet, abtn_receive_packet), 70 { 0, 0 } 71 }; 72 73 static driver_t abtn_driver = { 74 "abtn", 75 abtn_methods, 76 sizeof(struct abtn_softc), 77 }; 78 79 DRIVER_MODULE(abtn, adb, abtn_driver, 0, 0); 80 81 static int 82 abtn_probe(device_t dev) 83 { 84 uint8_t type; 85 86 type = adb_get_device_type(dev); 87 88 if (type != ADB_DEVICE_MISC) 89 return (ENXIO); 90 91 device_set_desc(dev, "ADB Brightness/Volume/Eject Buttons"); 92 return (0); 93 } 94 95 static int 96 abtn_attach(device_t dev) 97 { 98 struct abtn_softc *sc; 99 100 sc = device_get_softc(dev); 101 sc->sc_dev = dev; 102 103 sc->handler_id = adb_get_device_handler(dev); 104 105 return 0; 106 } 107 108 static u_int 109 abtn_receive_packet(device_t dev, u_char status, 110 u_char command, u_char reg, int len, u_char *data) 111 { 112 u_int cmd; 113 114 cmd = data[0]; 115 116 switch (cmd) { 117 case 0x0a: /* decrease brightness */ 118 devctl_notify("PMU", "keys", "brightness", 119 "notify=down"); 120 break; 121 122 case 0x09: /* increase brightness */ 123 devctl_notify("PMU", "keys", "brightness", "notify=up"); 124 break; 125 126 case 0x08: /* mute */ 127 case 0x01: /* mute, AV hardware */ 128 devctl_notify("PMU", "keys", "mute", NULL); 129 break; 130 case 0x07: /* decrease volume */ 131 case 0x02: /* decrease volume, AV hardware */ 132 devctl_notify("PMU", "keys", "volume", "notify=down"); 133 break; 134 case 0x06: /* increase volume */ 135 case 0x03: /* increase volume, AV hardware */ 136 devctl_notify("PMU", "keys", "volume", "notify=up"); 137 break; 138 case 0x0c: /* mirror display key */ 139 /* Need callback to do something with this */ 140 break; 141 case 0x0b: /* eject tray */ 142 devctl_notify("PMU", "keys", "eject", NULL); 143 break; 144 case 0x7f: /* numlock */ 145 /* Need callback to do something with this */ 146 break; 147 148 default: 149 #ifdef DEBUG 150 if ((cmd & ~0x7f) == 0) 151 device_printf(dev, "unknown ADB button 0x%x\n", cmd); 152 #endif 153 break; 154 } 155 return 0; 156 } 157