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 * $FreeBSD$
34 */
35
36#include <sys/param.h>
37#include <sys/systm.h>
38#include <sys/module.h>
39#include <sys/kernel.h>
40#include <sys/bus.h>
41
42#include <machine/bus.h>
43
44#include <dev/ofw/openfirm.h>
45#include <machine/ofw_machdep.h>
46
47#include <dev/adb/adb.h>
48
49#define ABTN_HANDLER_ID 31
50
51struct abtn_softc {
52	device_t sc_dev;
53
54	int handler_id;
55};
56
57static int abtn_probe(device_t dev);
58static int abtn_attach(device_t dev);
59static u_int abtn_receive_packet(device_t dev, u_char status,
60    u_char command, u_char reg, int len, u_char *data);
61
62static device_method_t abtn_methods[] = {
63	/* Device interface */
64	DEVMETHOD(device_probe,         abtn_probe),
65        DEVMETHOD(device_attach,        abtn_attach),
66        DEVMETHOD(device_shutdown,      bus_generic_shutdown),
67        DEVMETHOD(device_suspend,       bus_generic_suspend),
68        DEVMETHOD(device_resume,        bus_generic_resume),
69
70	/* ADB interface */
71	DEVMETHOD(adb_receive_packet,	abtn_receive_packet),
72	{ 0, 0 }
73};
74
75static driver_t abtn_driver = {
76	"abtn",
77	abtn_methods,
78	sizeof(struct abtn_softc),
79};
80
81static devclass_t abtn_devclass;
82
83DRIVER_MODULE(abtn, adb, abtn_driver, abtn_devclass, 0, 0);
84
85static int
86abtn_probe(device_t dev)
87{
88	uint8_t type;
89
90	type = adb_get_device_type(dev);
91
92	if (type != ADB_DEVICE_MISC)
93		return (ENXIO);
94
95	device_set_desc(dev, "ADB Brightness/Volume/Eject Buttons");
96	return (0);
97}
98
99static int
100abtn_attach(device_t dev)
101{
102	struct abtn_softc *sc;
103
104	sc = device_get_softc(dev);
105	sc->sc_dev = dev;
106
107	sc->handler_id = adb_get_device_handler(dev);
108
109	return 0;
110}
111
112static u_int
113abtn_receive_packet(device_t dev, u_char status,
114    u_char command, u_char reg, int len, u_char *data)
115{
116	u_int cmd;
117
118	cmd = data[0];
119
120	switch (cmd) {
121	case 0x0a:	/* decrease brightness */
122		devctl_notify("PMU", "keys", "brightness",
123		    "notify=down");
124		break;
125
126	case 0x09:	/* increase brightness */
127		devctl_notify("PMU", "keys", "brightness", "notify=up");
128		break;
129
130	case 0x08:	/* mute */
131	case 0x01:	/* mute, AV hardware */
132		devctl_notify("PMU", "keys", "mute", NULL);
133		break;
134	case 0x07:	/* decrease volume */
135	case 0x02:	/* decrease volume, AV hardware */
136		devctl_notify("PMU", "keys", "volume", "notify=down");
137		break;
138	case 0x06:	/* increase volume */
139	case 0x03:	/* increase volume, AV hardware */
140		devctl_notify("PMU", "keys", "volume", "notify=up");
141		break;
142	case 0x0c:	/* mirror display key */
143		/* Need callback to do something with this */
144		break;
145	case 0x0b:	/* eject tray */
146		devctl_notify("PMU", "keys", "eject", NULL);
147		break;
148	case 0x7f:	/* numlock */
149		/* Need callback to do something with this */
150		break;
151
152	default:
153#ifdef DEBUG
154		if ((cmd & ~0x7f) == 0)
155			device_printf(dev, "unknown ADB button 0x%x\n", cmd);
156#endif
157		break;
158	}
159	return 0;
160}
161