xref: /freebsd/sys/dev/adb/adb_buttons.c (revision 95ee2897e98f5d444f26ed2334cc7c439f9c16c6)
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