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: releng/5.3/sys/dev/acpica/acpi_button.c 131341 2004-06-30 16:08:03Z njl $
29 */
30
31 #include "opt_acpi.h"
32 #include <sys/param.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/bus.h>
36
37 #include "acpi.h"
38 #include <dev/acpica/acpivar.h>
39
40 /* Hooks for the ACPI CA debugging infrastructure */
41 #define _COMPONENT ACPI_BUTTON
42 ACPI_MODULE_NAME("BUTTON")
43
44 struct acpi_button_softc {
45 device_t button_dev;
46 ACPI_HANDLE button_handle;
47 boolean_t button_type;
48 #define ACPI_POWER_BUTTON 0
49 #define ACPI_SLEEP_BUTTON 1
50 boolean_t fixed;
51 };
52
53 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80
54 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02
55
56 static int acpi_button_probe(device_t dev);
57 static int acpi_button_attach(device_t dev);
58 static int acpi_button_suspend(device_t dev);
59 static int acpi_button_resume(device_t dev);
60 static void acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify,
61 void *context);
62 static ACPI_STATUS
63 acpi_button_fixed_handler(void *context);
64 static void acpi_button_notify_sleep(void *arg);
65 static void acpi_button_notify_wakeup(void *arg);
66
67 static char *btn_ids[] = {
68 "PNP0C0C", "ACPI_FPB", "PNP0C0E", "ACPI_FSB",
69 NULL
70 };
71
72 static device_method_t acpi_button_methods[] = {
73 /* Device interface */
74 DEVMETHOD(device_probe, acpi_button_probe),
75 DEVMETHOD(device_attach, acpi_button_attach),
76 DEVMETHOD(device_suspend, acpi_button_suspend),
77 DEVMETHOD(device_shutdown, acpi_button_suspend),
78 DEVMETHOD(device_resume, acpi_button_resume),
79
80 {0, 0}
81 };
82
83 static driver_t acpi_button_driver = {
84 "acpi_button",
85 acpi_button_methods,
86 sizeof(struct acpi_button_softc),
87 };
88
89 static devclass_t acpi_button_devclass;
90 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, acpi_button_devclass,
91 0, 0);
92 MODULE_DEPEND(acpi_button, acpi, 1, 1, 1);
93
94 static int
95 acpi_button_probe(device_t dev)
96 {
97 struct acpi_button_softc *sc;
98 char *str;
99
100 if (acpi_disabled("button") ||
101 (str = ACPI_ID_PROBE(device_get_parent(dev), dev, btn_ids)) == NULL)
102 return (ENXIO);
103
104 sc = device_get_softc(dev);
105 if (strcmp(str, "PNP0C0C") == 0) {
106 device_set_desc(dev, "Power Button");
107 sc->button_type = ACPI_POWER_BUTTON;
108 } else if (strcmp(str, "ACPI_FPB") == 0) {
109 device_set_desc(dev, "Power Button (fixed)");
110 sc->button_type = ACPI_POWER_BUTTON;
111 sc->fixed = 1;
112 } else if (strcmp(str, "PNP0C0E") == 0) {
113 device_set_desc(dev, "Sleep Button");
114 sc->button_type = ACPI_SLEEP_BUTTON;
115 } else if (strcmp(str, "ACPI_FSB") == 0) {
116 device_set_desc(dev, "Sleep Button (fixed)");
117 sc->button_type = ACPI_SLEEP_BUTTON;
118 sc->fixed = 1;
119 }
120
121 return (0);
122 }
123
124 static int
125 acpi_button_attach(device_t dev)
126 {
127 struct acpi_button_softc *sc;
128 ACPI_STATUS status;
129 int event;
130
131 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
132
133 sc = device_get_softc(dev);
134 sc->button_dev = dev;
135 sc->button_handle = acpi_get_handle(dev);
136 event = (sc->button_type == ACPI_SLEEP_BUTTON) ?
137 ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON;
138
139 /*
140 * Install the new handler. We could remove any fixed handlers added
141 * from the FADT once we have a duplicate from the AML but some systems
142 * only return events on one or the other so we have to keep both.
143 */
144 if (sc->fixed) {
145 AcpiClearEvent(event);
146 status = AcpiInstallFixedEventHandler(event,
147 acpi_button_fixed_handler, sc);
148 } else {
149 /*
150 * If a system does not get lid events, it may make sense to change
151 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake
152 * and runtime notify in that case though.
153 */
154 status = AcpiInstallNotifyHandler(sc->button_handle,
155 ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc);
156 }
157 if (ACPI_FAILURE(status)) {
158 device_printf(sc->button_dev, "couldn't install notify handler - %s\n",
159 AcpiFormatException(status));
160 return_VALUE (ENXIO);
161 }
162
163 /* Enable the GPE for wake/runtime. */
164 acpi_wake_init(dev, ACPI_GPE_TYPE_WAKE_RUN);
165 acpi_wake_set_enable(dev, 1);
166
167 return_VALUE (0);
168 }
169
170 static int
171 acpi_button_suspend(device_t dev)
172 {
173 return (0);
174 }
175
176 static int
177 acpi_button_resume(device_t dev)
178 {
179 return (0);
180 }
181
182 static void
183 acpi_button_notify_sleep(void *arg)
184 {
185 struct acpi_button_softc *sc;
186 struct acpi_softc *acpi_sc;
187
188 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
189
190 sc = (struct acpi_button_softc *)arg;
191 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
192 if (acpi_sc == NULL)
193 return_VOID;
194
195 acpi_UserNotify("Button", sc->button_handle, sc->button_type);
196
197 switch (sc->button_type) {
198 case ACPI_POWER_BUTTON:
199 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n");
200 acpi_event_power_button_sleep(acpi_sc);
201 break;
202 case ACPI_SLEEP_BUTTON:
203 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n");
204 acpi_event_sleep_button_sleep(acpi_sc);
205 break;
206 default:
207 break; /* unknown button type */
208 }
209 }
210
211 static void
212 acpi_button_notify_wakeup(void *arg)
213 {
214 struct acpi_button_softc *sc;
215 struct acpi_softc *acpi_sc;
216
217 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
218
219 sc = (struct acpi_button_softc *)arg;
220 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
221 if (acpi_sc == NULL)
222 return_VOID;
223
224 acpi_UserNotify("Button", sc->button_handle, sc->button_type);
225
226 switch (sc->button_type) {
227 case ACPI_POWER_BUTTON:
228 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n");
229 acpi_event_power_button_wake(acpi_sc);
230 break;
231 case ACPI_SLEEP_BUTTON:
232 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n");
233 acpi_event_sleep_button_wake(acpi_sc);
234 break;
235 default:
236 break; /* unknown button type */
237 }
238 }
239
240 static void
241 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
242 {
243 struct acpi_button_softc *sc;
244
245 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
246
247 sc = (struct acpi_button_softc *)context;
248 switch (notify) {
249 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
250 AcpiOsQueueForExecution(OSD_PRIORITY_LO,
251 acpi_button_notify_sleep, sc);
252 break;
253 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
254 AcpiOsQueueForExecution(OSD_PRIORITY_LO,
255 acpi_button_notify_wakeup, sc);
256 break;
257 default:
258 device_printf(sc->button_dev, "unknown notify %#x\n", notify);
259 break;
260 }
261 }
262
263 static ACPI_STATUS
264 acpi_button_fixed_handler(void *context)
265 {
266 struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
267
268 ACPI_FUNCTION_TRACE_PTR((char *)(uintptr_t)__func__, context);
269
270 if (context == NULL)
271 return_ACPI_STATUS (AE_BAD_PARAMETER);
272
273 acpi_button_notify_handler(sc->button_handle,
274 ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc);
275 return_ACPI_STATUS (AE_OK);
276 }
Cache object: 72fa912109c86a44023ca7fc203d8cc6
|