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
abtn_probe(device_t dev)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
abtn_attach(device_t dev)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
abtn_receive_packet(device_t dev,u_char status,u_char command,u_char reg,int len,u_char * data)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