adb_buttons.c revision 331722 
1/*-
2 * Copyright (c) 2011, Justin Hibbits.
3 * Copyright (c) 2002, Miodrag Vallat.
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 * OpenBSD: abtn.c,v 1.12 2009/01/10 18:00:59 robert Exp
29 * NetBSD: abtn.c,v 1.1 1999/07/12 17:48:26 tsubai Exp
30 *
31 * $FreeBSD: stable/11/sys/dev/adb/adb_buttons.c 331722 2018-03-29 02:50:57Z eadler $
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
49struct abtn_softc {
50	device_t sc_dev;
51
52	int handler_id;
53};
54
55static int abtn_probe(device_t dev);
56static int abtn_attach(device_t dev);
57static u_int abtn_receive_packet(device_t dev, u_char status,
58    u_char command, u_char reg, int len, u_char *data);
59
60static 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
71	{ 0, 0 }
72};
73
74static driver_t abtn_driver = {
75	"abtn",
76	abtn_methods,
77	sizeof(struct abtn_softc),
78};
79
80static devclass_t abtn_devclass;
81
82DRIVER_MODULE(abtn, adb, abtn_driver, abtn_devclass, 0, 0);
83
84static int
85abtn_probe(device_t dev)
86{
87	uint8_t type;
88
89	type = adb_get_device_type(dev);
90
91	if (type != ADB_DEVICE_MISC)
92		return (ENXIO);
93
94	device_set_desc(dev, "ADB Brightness/Volume/Eject Buttons");
95	return (0);
96}
97
98static int
99abtn_attach(device_t dev)
100{
101	struct abtn_softc *sc;
102
103	sc = device_get_softc(dev);
104	sc->sc_dev = dev;
105
106	sc->handler_id = adb_get_device_handler(dev);
107
108	return 0;
109}
110
111static u_int
112abtn_receive_packet(device_t dev, u_char status,
113    u_char command, u_char reg, int len, u_char *data)
114{
115	u_int cmd;
116
117	cmd = data[0];
118
119	switch (cmd) {
120	case 0x0a:	/* decrease brightness */
121		devctl_notify("PMU", "keys", "brightness",
122		    "notify=down");
123		break;
124
125	case 0x09:	/* increase brightness */
126		devctl_notify("PMU", "keys", "brightness", "notify=up");
127		break;
128
129	case 0x08:	/* mute */
130	case 0x01:	/* mute, AV hardware */
131		devctl_notify("PMU", "keys", "mute", NULL);
132		break;
133	case 0x07:	/* decrease volume */
134	case 0x02:	/* decrease volume, AV hardware */
135		devctl_notify("PMU", "keys", "volume", "notify=down");
136		break;
137	case 0x06:	/* increase volume */
138	case 0x03:	/* increase volume, AV hardware */
139		devctl_notify("PMU", "keys", "volume", "notify=up");
140		break;
141	case 0x0c:	/* mirror display key */
142		/* Need callback to do something with this */
143		break;
144	case 0x0b:	/* eject tray */
145		devctl_notify("PMU", "keys", "eject", NULL);
146		break;
147	case 0x7f:	/* numlock */
148		/* Need callback to do something with this */
149		break;
150
151	default:
152#ifdef DEBUG
153		if ((cmd & ~0x7f) == 0)
154			device_printf(dev, "unknown ADB button 0x%x\n", cmd);
155#endif
156		break;
157	}
158	return 0;
159}
160
161