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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/kernel.h>
35 #include <machine/bus.h>
37 #include <sys/eventhandler.h>
38 #include <sys/ioccom.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
42 #include <sys/power.h>
44 #include <contrib/dev/acpica/include/acpi.h>
46 #include <dev/acpica/acpivar.h>
47 #include <dev/acpica/acpiio.h>
48 #include <isa/isavar.h>
49 #include <isa/pnpvar.h>
51 /* Hooks for the ACPI CA debugging infrastructure */
52 #define _COMPONENT ACPI_AC_ADAPTER
53 ACPI_MODULE_NAME("AC_ADAPTER")
55 /* Number of times to retry initialization before giving up. */
56 #define ACPI_ACAD_RETRY_MAX 6
58 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80
60 struct acpi_acad_softc {
64 static void acpi_acad_get_status(void *);
65 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
66 static int acpi_acad_probe(device_t);
67 static int acpi_acad_attach(device_t);
68 static int acpi_acad_ioctl(u_long, caddr_t, void *);
69 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
70 static void acpi_acad_init_acline(void *arg);
71 static void acpi_acad_ac_only(void *arg);
73 static device_method_t acpi_acad_methods[] = {
74 /* Device interface */
75 DEVMETHOD(device_probe, acpi_acad_probe),
76 DEVMETHOD(device_attach, acpi_acad_attach),
81 static driver_t acpi_acad_driver = {
84 sizeof(struct acpi_acad_softc),
87 static devclass_t acpi_acad_devclass;
88 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0);
89 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
91 ACPI_SERIAL_DECL(acad, "ACPI AC adapter");
93 SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL);
96 acpi_acad_get_status(void *context)
98 struct acpi_acad_softc *sc;
104 sc = device_get_softc(dev);
105 h = acpi_get_handle(dev);
107 acpi_GetInteger(h, "_PSR", &newstatus);
109 /* If status is valid and has changed, notify the system. */
110 ACPI_SERIAL_BEGIN(acad);
111 if (newstatus != -1 && sc->status != newstatus) {
112 sc->status = newstatus;
113 ACPI_SERIAL_END(acad);
114 power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE :
115 POWER_PROFILE_ECONOMY);
116 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
117 "%s Line\n", newstatus ? "On" : "Off");
118 acpi_UserNotify("ACAD", h, newstatus);
119 EVENTHANDLER_INVOKE(acpi_acad_event, newstatus);
121 ACPI_SERIAL_END(acad);
125 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
129 dev = (device_t)context;
131 case ACPI_NOTIFY_BUS_CHECK:
132 case ACPI_NOTIFY_DEVICE_CHECK:
133 case ACPI_POWERSOURCE_STAT_CHANGE:
134 /* Temporarily. It is better to notify policy manager */
135 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context);
138 device_printf(dev, "unknown notify %#x\n", notify);
144 acpi_acad_probe(device_t dev)
146 static char *acad_ids[] = { "ACPI0003", NULL };
149 if (acpi_disabled("acad"))
151 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids, NULL);
153 device_set_desc(dev, "AC Adapter");
158 acpi_acad_attach(device_t dev)
160 struct acpi_acad_softc *sc;
161 struct acpi_softc *acpi_sc;
165 sc = device_get_softc(dev);
166 handle = acpi_get_handle(dev);
168 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
172 if (device_get_unit(dev) == 0) {
173 acpi_sc = acpi_device_get_parent_softc(dev);
174 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
175 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, "acline",
176 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, &sc->status, 0,
177 acpi_acad_sysctl, "I", "");
180 /* Get initial status after whole system is up. */
184 * Install both system and device notify handlers since the Casio
187 AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
188 acpi_acad_notify_handler, dev);
189 AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev);
195 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
197 struct acpi_acad_softc *sc;
201 sc = device_get_softc(dev);
204 * No security check required: information retrieval only. If
205 * new functions are added here, a check might be required.
208 case ACPIIO_ACAD_GET_STATUS:
209 acpi_acad_get_status(dev);
210 *(int *)addr = sc->status;
220 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
224 if (acpi_acad_get_acline(&val) != 0)
227 val = *(u_int *)oidp->oid_arg1;
228 error = sysctl_handle_int(oidp, &val, 0, req);
233 acpi_acad_init_acline(void *arg)
235 struct acpi_acad_softc *sc;
240 sc = device_get_softc(dev);
241 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
242 "acline initialization start\n");
244 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
245 acpi_acad_get_status(dev);
246 if (sc->status != -1)
251 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
252 "acline initialization done, tried %d times\n", retry + 1);
256 * If no AC line devices detected after boot, create an "online" event
257 * so that userland code can adjust power settings accordingly. The default
258 * power profile is "performance" so we don't need to repeat that here.
261 acpi_acad_ac_only(void __unused *arg)
264 if (devclass_get_count(acpi_acad_devclass) == 0)
265 acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1);
272 acpi_acad_get_acline(int *status)
274 struct acpi_acad_softc *sc;
277 dev = devclass_get_device(acpi_acad_devclass, 0);
280 sc = device_get_softc(dev);
282 acpi_acad_get_status(dev);
283 *status = sc->status;