1 /*-
2 * Copyright (c) 2000 Mitsaru IWASAKI <iwasaki@jp.freebsd.org>
3 * Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
4 * Copyright (c) 2000 BSDi
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31 #include "opt_acpi.h"
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/bus.h>
35
36 #include "acpi.h"
37
38 #include <dev/acpica/acpivar.h>
39
40 /*
41 * Hooks for the ACPI CA debugging infrastructure
42 */
43 #define _COMPONENT ACPI_BUTTON
44 ACPI_MODULE_NAME("BUTTON")
45
46 struct acpi_button_softc {
47 device_t button_dev;
48 ACPI_HANDLE button_handle;
49 #define ACPI_POWER_BUTTON 0
50 #define ACPI_SLEEP_BUTTON 1
51 boolean_t button_type; /* Power or Sleep Button */
52 };
53
54 static int acpi_button_probe(device_t dev);
55 static int acpi_button_attach(device_t dev);
56 static int acpi_button_suspend(device_t dev);
57 static int acpi_button_resume(device_t dev);
58 static void acpi_button_notify_handler(ACPI_HANDLE h,UINT32 notify, void *context);
59 static void acpi_button_notify_pressed_for_sleep(void *arg);
60 static void acpi_button_notify_pressed_for_wakeup(void *arg);
61
62 static device_method_t acpi_button_methods[] = {
63 /* Device interface */
64 DEVMETHOD(device_probe, acpi_button_probe),
65 DEVMETHOD(device_attach, acpi_button_attach),
66 DEVMETHOD(device_suspend, acpi_button_suspend),
67 DEVMETHOD(device_resume, acpi_button_resume),
68
69 {0, 0}
70 };
71
72 static driver_t acpi_button_driver = {
73 "acpi_button",
74 acpi_button_methods,
75 sizeof(struct acpi_button_softc),
76 };
77
78 static devclass_t acpi_button_devclass;
79 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass, 0, 0);
80
81 static int
82 acpi_button_probe(device_t dev)
83 {
84 struct acpi_button_softc *sc;
85
86 sc = device_get_softc(dev);
87 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE) {
88 if (!acpi_disabled("button")) {
89 if (acpi_MatchHid(dev, "PNP0C0C")) {
90 device_set_desc(dev, "Power Button");
91 sc->button_type = ACPI_POWER_BUTTON;
92 return(0);
93 }
94 if (acpi_MatchHid(dev, "PNP0C0E")) {
95 device_set_desc(dev, "Sleep Button");
96 sc->button_type = ACPI_SLEEP_BUTTON;
97 return(0);
98 }
99 }
100 }
101 return(ENXIO);
102 }
103
104 static int
105 acpi_button_attach(device_t dev)
106 {
107 struct acpi_button_softc *sc;
108 ACPI_STATUS status;
109
110 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
111
112 sc = device_get_softc(dev);
113 sc->button_dev = dev;
114 sc->button_handle = acpi_get_handle(dev);
115
116 if (ACPI_FAILURE(status = AcpiInstallNotifyHandler(sc->button_handle, ACPI_DEVICE_NOTIFY,
117 acpi_button_notify_handler, sc))) {
118 device_printf(sc->button_dev, "couldn't install Notify handler - %s\n", AcpiFormatException(status));
119 return_VALUE(ENXIO);
120 }
121 acpi_device_enable_wake_capability(sc->button_handle, 1);
122 return_VALUE(0);
123 }
124
125 static int
126 acpi_button_suspend(device_t dev)
127 {
128 struct acpi_button_softc *sc;
129
130 sc = device_get_softc(dev);
131 acpi_device_enable_wake_event(sc->button_handle);
132 return (0);
133 }
134
135 static int
136 acpi_button_resume(device_t dev)
137 {
138
139 return (0);
140 }
141
142 static void
143 acpi_button_notify_pressed_for_sleep(void *arg)
144 {
145 struct acpi_button_softc *sc;
146 struct acpi_softc *acpi_sc;
147
148 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
149
150 sc = (struct acpi_button_softc *)arg;
151 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
152 if (acpi_sc == NULL) {
153 return_VOID;
154 }
155
156 switch (sc->button_type) {
157 case ACPI_POWER_BUTTON:
158 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n");
159 acpi_eventhandler_power_button_for_sleep((void *)acpi_sc);
160 break;
161 case ACPI_SLEEP_BUTTON:
162 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n");
163 acpi_eventhandler_sleep_button_for_sleep((void *)acpi_sc);
164 break;
165 default:
166 break; /* unknown button type */
167 }
168 return_VOID;
169 }
170
171 static void
172 acpi_button_notify_pressed_for_wakeup(void *arg)
173 {
174 struct acpi_button_softc *sc;
175 struct acpi_softc *acpi_sc;
176
177 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
178
179 sc = (struct acpi_button_softc *)arg;
180 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
181 if (acpi_sc == NULL) {
182 return_VOID;
183 }
184
185 switch (sc->button_type) {
186 case ACPI_POWER_BUTTON:
187 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n");
188 acpi_eventhandler_power_button_for_wakeup((void *)acpi_sc);
189 break;
190 case ACPI_SLEEP_BUTTON:
191 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n");
192 acpi_eventhandler_sleep_button_for_wakeup((void *)acpi_sc);
193 break;
194 default:
195 break; /* unknown button type */
196 }
197 return_VOID;
198 }
199
200 /* XXX maybe not here */
201 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80
202 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02
203
204 static void
205 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
206 {
207 struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
208
209 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
210
211 switch (notify) {
212 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
213 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_sleep, sc);
214 break;
215 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
216 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_button_notify_pressed_for_wakeup, sc);
217 break;
218 default:
219 break; /* unknown notification value */
220 }
221 return_VOID;
222 }
223
224
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