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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include "opt_acpi.h"
33 #include "opt_evdev.h"
34 #include <sys/param.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/bus.h>
38
39 #include <contrib/dev/acpica/include/acpi.h>
40 #include <contrib/dev/acpica/include/accommon.h>
41
42 #include <dev/acpica/acpivar.h>
43
44 #ifdef EVDEV_SUPPORT
45 #include <dev/evdev/input.h>
46 #include <dev/evdev/evdev.h>
47 #endif
48
49 /* Hooks for the ACPI CA debugging infrastructure */
50 #define _COMPONENT ACPI_BUTTON
51 ACPI_MODULE_NAME("BUTTON")
52
53 struct acpi_button_softc {
54 device_t button_dev;
55 ACPI_HANDLE button_handle;
56 boolean_t button_type;
57 #define ACPI_POWER_BUTTON 0
58 #define ACPI_SLEEP_BUTTON 1
59 boolean_t fixed;
60 #ifdef EVDEV_SUPPORT
61 struct evdev_dev *button_evdev;
62 #endif
63 };
64
65 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP 0x80
66 #define ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP 0x02
67
68 static int acpi_button_probe(device_t dev);
69 static int acpi_button_attach(device_t dev);
70 static int acpi_button_suspend(device_t dev);
71 static int acpi_button_resume(device_t dev);
72 static void acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify,
73 void *context);
74 static ACPI_STATUS
75 acpi_button_fixed_handler(void *context);
76 static void acpi_button_notify_sleep(void *arg);
77 static void acpi_button_notify_wakeup(void *arg);
78
79 static char *btn_ids[] = {
80 "PNP0C0C", "ACPI_FPB", "PNP0C0E", "ACPI_FSB",
81 NULL
82 };
83
84 static device_method_t acpi_button_methods[] = {
85 /* Device interface */
86 DEVMETHOD(device_probe, acpi_button_probe),
87 DEVMETHOD(device_attach, acpi_button_attach),
88 DEVMETHOD(device_suspend, acpi_button_suspend),
89 DEVMETHOD(device_shutdown, acpi_button_suspend),
90 DEVMETHOD(device_resume, acpi_button_resume),
91 DEVMETHOD_END
92 };
93
94 static driver_t acpi_button_driver = {
95 "acpi_button",
96 acpi_button_methods,
97 sizeof(struct acpi_button_softc),
98 };
99
100 DRIVER_MODULE(acpi_button, acpi, acpi_button_driver, 0, 0);
101 MODULE_DEPEND(acpi_button, acpi, 1, 1, 1);
102
103 static int
104 acpi_button_probe(device_t dev)
105 {
106 struct acpi_button_softc *sc;
107 char *str;
108 int rv;
109
110 if (acpi_disabled("button"))
111 return (ENXIO);
112 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, btn_ids, &str);
113 if (rv > 0)
114 return (ENXIO);
115
116 sc = device_get_softc(dev);
117 if (strcmp(str, "PNP0C0C") == 0) {
118 device_set_desc(dev, "Power Button");
119 sc->button_type = ACPI_POWER_BUTTON;
120 } else if (strcmp(str, "ACPI_FPB") == 0) {
121 device_set_desc(dev, "Power Button (fixed)");
122 sc->button_type = ACPI_POWER_BUTTON;
123 sc->fixed = 1;
124 } else if (strcmp(str, "PNP0C0E") == 0) {
125 device_set_desc(dev, "Sleep Button");
126 sc->button_type = ACPI_SLEEP_BUTTON;
127 } else if (strcmp(str, "ACPI_FSB") == 0) {
128 device_set_desc(dev, "Sleep Button (fixed)");
129 sc->button_type = ACPI_SLEEP_BUTTON;
130 sc->fixed = 1;
131 }
132
133 return (rv);
134 }
135
136 static int
137 acpi_button_attach(device_t dev)
138 {
139 struct acpi_prw_data prw;
140 struct acpi_button_softc *sc;
141 ACPI_STATUS status;
142 int event;
143
144 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
145
146 sc = device_get_softc(dev);
147 sc->button_dev = dev;
148 sc->button_handle = acpi_get_handle(dev);
149 event = (sc->button_type == ACPI_SLEEP_BUTTON) ?
150 ACPI_EVENT_SLEEP_BUTTON : ACPI_EVENT_POWER_BUTTON;
151
152 #ifdef EVDEV_SUPPORT
153 sc->button_evdev = evdev_alloc();
154 evdev_set_name(sc->button_evdev, device_get_desc(dev));
155 evdev_set_phys(sc->button_evdev, device_get_nameunit(dev));
156 evdev_set_id(sc->button_evdev, BUS_HOST, 0, 0, 1);
157 evdev_support_event(sc->button_evdev, EV_SYN);
158 evdev_support_event(sc->button_evdev, EV_KEY);
159 evdev_support_key(sc->button_evdev,
160 (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER);
161
162 if (evdev_register(sc->button_evdev))
163 return (ENXIO);
164 #endif
165
166 /*
167 * Install the new handler. We could remove any fixed handlers added
168 * from the FADT once we have a duplicate from the AML but some systems
169 * only return events on one or the other so we have to keep both.
170 */
171 if (sc->fixed) {
172 AcpiClearEvent(event);
173 status = AcpiInstallFixedEventHandler(event,
174 acpi_button_fixed_handler, sc);
175 } else {
176 /*
177 * If a system does not get lid events, it may make sense to change
178 * the type to ACPI_ALL_NOTIFY. Some systems generate both a wake
179 * and runtime notify in that case though.
180 */
181 status = AcpiInstallNotifyHandler(sc->button_handle,
182 ACPI_DEVICE_NOTIFY, acpi_button_notify_handler, sc);
183 }
184 if (ACPI_FAILURE(status)) {
185 device_printf(sc->button_dev, "couldn't install notify handler - %s\n",
186 AcpiFormatException(status));
187 return_VALUE (ENXIO);
188 }
189
190 /* Enable the GPE for wake/runtime. */
191 acpi_wake_set_enable(dev, 1);
192 if (acpi_parse_prw(sc->button_handle, &prw) == 0)
193 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit);
194
195 return_VALUE (0);
196 }
197
198 static int
199 acpi_button_suspend(device_t dev)
200 {
201 return (0);
202 }
203
204 static int
205 acpi_button_resume(device_t dev)
206 {
207 return (0);
208 }
209
210 static void
211 acpi_button_notify_sleep(void *arg)
212 {
213 struct acpi_button_softc *sc;
214 struct acpi_softc *acpi_sc;
215
216 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
217
218 sc = (struct acpi_button_softc *)arg;
219 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
220 if (acpi_sc == NULL)
221 return_VOID;
222
223 acpi_UserNotify("Button", sc->button_handle, sc->button_type);
224
225 switch (sc->button_type) {
226 case ACPI_POWER_BUTTON:
227 ACPI_VPRINT(sc->button_dev, acpi_sc, "power button pressed\n");
228 acpi_event_power_button_sleep(acpi_sc);
229 break;
230 case ACPI_SLEEP_BUTTON:
231 ACPI_VPRINT(sc->button_dev, acpi_sc, "sleep button pressed\n");
232 acpi_event_sleep_button_sleep(acpi_sc);
233 break;
234 default:
235 break; /* unknown button type */
236 }
237 }
238
239 static void
240 acpi_button_notify_wakeup(void *arg)
241 {
242 struct acpi_button_softc *sc;
243 struct acpi_softc *acpi_sc;
244
245 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
246
247 sc = (struct acpi_button_softc *)arg;
248 acpi_sc = acpi_device_get_parent_softc(sc->button_dev);
249 if (acpi_sc == NULL)
250 return_VOID;
251
252 acpi_UserNotify("Button", sc->button_handle, sc->button_type);
253
254 switch (sc->button_type) {
255 case ACPI_POWER_BUTTON:
256 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by power button\n");
257 acpi_event_power_button_wake(acpi_sc);
258 break;
259 case ACPI_SLEEP_BUTTON:
260 ACPI_VPRINT(sc->button_dev, acpi_sc, "wakeup by sleep button\n");
261 acpi_event_sleep_button_wake(acpi_sc);
262 break;
263 default:
264 break; /* unknown button type */
265 }
266 }
267
268 static void
269 acpi_button_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
270 {
271 struct acpi_button_softc *sc;
272 #ifdef EVDEV_SUPPORT
273 uint16_t key;
274 #endif
275
276 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, notify);
277
278 sc = (struct acpi_button_softc *)context;
279 switch (notify) {
280 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP:
281 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_sleep, sc);
282 break;
283 case ACPI_NOTIFY_BUTTON_PRESSED_FOR_WAKEUP:
284 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_button_notify_wakeup, sc);
285 break;
286 default:
287 device_printf(sc->button_dev, "unknown notify %#x\n", notify);
288 break;
289 }
290
291 #ifdef EVDEV_SUPPORT
292 key = (sc->button_type == ACPI_SLEEP_BUTTON) ? KEY_SLEEP : KEY_POWER;
293 evdev_push_key(sc->button_evdev, key, 1);
294 evdev_sync(sc->button_evdev);
295 evdev_push_key(sc->button_evdev, key, 0);
296 evdev_sync(sc->button_evdev);
297 #endif
298 }
299
300 static ACPI_STATUS
301 acpi_button_fixed_handler(void *context)
302 {
303 struct acpi_button_softc *sc = (struct acpi_button_softc *)context;
304
305 ACPI_FUNCTION_TRACE_PTR((char *)(uintptr_t)__func__, context);
306
307 if (context == NULL)
308 return_ACPI_STATUS (AE_BAD_PARAMETER);
309
310 acpi_button_notify_handler(sc->button_handle,
311 ACPI_NOTIFY_BUTTON_PRESSED_FOR_SLEEP, sc);
312 return_ACPI_STATUS (AE_OK);
313 }
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