2 * Copyright (c) 2000 Takanori Watanabe
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/dev/acpica/acpi_acad.c,v 1.27 2004/06/13 22:52:30 njl Exp $
27 * $DragonFly: src/sys/dev/acpica5/acpi_acad.c,v 1.8 2007/10/23 03:04:48 y0netan1 Exp $
31 #include <sys/param.h>
32 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
38 #include <sys/power.h>
41 #include <dev/acpica5/acpivar.h>
42 #include <dev/acpica5/acpiio.h>
44 /* Hooks for the ACPI CA debugging infrastructure */
45 #define _COMPONENT ACPI_AC_ADAPTER
46 ACPI_MODULE_NAME("AC_ADAPTER")
48 /* Number of times to retry initialization before giving up. */
49 #define ACPI_ACAD_RETRY_MAX 6
51 #define ACPI_DEVICE_CHECK_PNP 0x00
52 #define ACPI_DEVICE_CHECK_EXISTENCE 0x01
53 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80
55 struct acpi_acad_softc {
60 static void acpi_acad_get_status(void *);
61 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
62 static int acpi_acad_probe(device_t);
63 static int acpi_acad_attach(device_t);
64 static int acpi_acad_ioctl(u_long, caddr_t, void *);
65 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
66 static void acpi_acad_init_acline(void *arg);
68 static device_method_t acpi_acad_methods[] = {
69 /* Device interface */
70 DEVMETHOD(device_probe, acpi_acad_probe),
71 DEVMETHOD(device_attach, acpi_acad_attach),
76 static driver_t acpi_acad_driver = {
79 sizeof(struct acpi_acad_softc),
82 static devclass_t acpi_acad_devclass;
83 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0);
84 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
87 acpi_acad_get_status(void *context)
89 struct acpi_acad_softc *sc;
95 sc = device_get_softc(dev);
96 h = acpi_get_handle(dev);
97 if (ACPI_FAILURE(acpi_GetInteger(h, "_PSR", &newstatus))) {
102 if (sc->status != newstatus) {
103 sc->status = newstatus;
105 /* Set system power profile based on AC adapter status */
106 power_profile_set_state(sc->status ? POWER_PROFILE_PERFORMANCE :
107 POWER_PROFILE_ECONOMY);
108 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
109 "%s Line\n", sc->status ? "On" : "Off");
111 acpi_UserNotify("ACAD", h, sc->status);
116 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
120 dev = (device_t)context;
122 case ACPI_DEVICE_CHECK_PNP:
123 case ACPI_DEVICE_CHECK_EXISTENCE:
124 case ACPI_POWERSOURCE_STAT_CHANGE:
125 /* Temporarily. It is better to notify policy manager */
126 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context);
129 device_printf(dev, "unknown notify %#x\n", notify);
135 acpi_acad_probe(device_t dev)
137 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE && !acpi_disabled("acad") &&
138 acpi_MatchHid(acpi_get_handle(dev), "ACPI0003")) {
139 device_set_desc(dev, "AC Adapter");
146 acpi_acad_attach(device_t dev)
148 struct acpi_acad_softc *sc;
149 struct acpi_softc *acpi_sc;
153 sc = device_get_softc(dev);
156 handle = acpi_get_handle(dev);
158 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
162 if (device_get_unit(dev) == 0) {
163 acpi_sc = acpi_device_get_parent_softc(dev);
164 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
165 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
166 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD,
167 &sc->status, 0, acpi_acad_sysctl, "I", "");
170 /* Get initial status after whole system is up. */
172 sc->initializing = 0;
175 * Also install a system notify handler even though this is not
176 * required by the specification. The Casio FIVA needs this.
178 AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY,
179 acpi_acad_notify_handler, dev);
180 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
181 acpi_acad_notify_handler, dev);
182 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev);
188 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
190 struct acpi_acad_softc *sc;
194 sc = device_get_softc(dev);
199 * No security check required: information retrieval only. If
200 * new functions are added here, a check might be required.
203 case ACPIIO_ACAD_GET_STATUS:
204 acpi_acad_get_status(dev);
205 *(int *)addr = sc->status;
215 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
219 if (acpi_acad_get_acline(&val) != 0)
222 val = *(u_int *)oidp->oid_arg1;
223 error = sysctl_handle_int(oidp, &val, 0, req);
228 acpi_acad_init_acline(void *arg)
230 struct acpi_acad_softc *sc;
235 sc = device_get_softc(dev);
236 if (sc->initializing)
239 sc->initializing = 1;
240 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
241 "acline initialization start\n");
244 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
245 acpi_acad_get_status(dev);
246 if (status != sc->status)
251 sc->initializing = 0;
252 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
253 "acline initialization done, tried %d times\n", retry + 1);
260 acpi_acad_get_acline(int *status)
262 struct acpi_acad_softc *sc;
265 dev = devclass_get_device(acpi_acad_devclass, 0);
268 sc = device_get_softc(dev);
272 acpi_acad_get_status(dev);
273 *status = sc->status;