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 1.20 2003/10/25 05:03:24 njl Exp $
27 * $DragonFly: src/sys/dev/acpica5/acpi_acad.c,v 1.1 2004/02/21 06:48:08 dillon Exp $
31 #include <sys/param.h>
32 #include <sys/kernel.h>
35 #include <machine/bus.h>
36 #include <machine/resource.h>
38 #include <sys/ioccom.h>
39 #include <sys/malloc.h>
41 #include <sys/power.h>
44 #include <dev/acpica5/acpivar.h>
45 #include <dev/acpica5/acpiio.h>
47 /* Hooks for the ACPI CA debugging infrastructure */
48 #define _COMPONENT ACPI_AC_ADAPTER
49 ACPI_MODULE_NAME("AC_ADAPTER")
51 /* Number of times to retry initialization before giving up. */
52 #define ACPI_ACAD_RETRY_MAX 6
54 #define ACPI_DEVICE_CHECK_PNP 0x00
55 #define ACPI_DEVICE_CHECK_EXISTENCE 0x01
56 #define ACPI_POWERSOURCE_STAT_CHANGE 0x80
58 struct acpi_acad_softc {
63 static void acpi_acad_get_status(void *);
64 static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
65 static int acpi_acad_probe(device_t);
66 static int acpi_acad_attach(device_t);
67 static int acpi_acad_ioctl(u_long, caddr_t, void *);
68 static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
69 static void acpi_acad_init_acline(void *arg);
71 static device_method_t acpi_acad_methods[] = {
72 /* Device interface */
73 DEVMETHOD(device_probe, acpi_acad_probe),
74 DEVMETHOD(device_attach, acpi_acad_attach),
79 static driver_t acpi_acad_driver = {
82 sizeof(struct acpi_acad_softc),
85 static devclass_t acpi_acad_devclass;
86 DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0);
89 acpi_acad_get_status(void *context)
91 struct acpi_acad_softc *sc;
97 sc = device_get_softc(dev);
98 h = acpi_get_handle(dev);
99 if (ACPI_FAILURE(acpi_EvaluateInteger(h, "_PSR", &newstatus))) {
104 if (sc->status != newstatus) {
105 sc->status = newstatus;
107 /* Set system power profile based on AC adapter status */
108 power_profile_set_state(sc->status ? POWER_PROFILE_PERFORMANCE :
109 POWER_PROFILE_ECONOMY);
110 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
111 "%s Line\n", sc->status ? "On" : "Off");
113 acpi_UserNotify("ACAD", h, sc->status);
118 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
120 device_t dev = context;
122 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
123 "Notify 0x%x\n", notify);
126 case ACPI_DEVICE_CHECK_PNP:
127 case ACPI_DEVICE_CHECK_EXISTENCE:
128 case ACPI_POWERSOURCE_STAT_CHANGE:
129 /* Temporarily. It is better to notify policy manager */
130 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_get_status, context);
138 acpi_acad_probe(device_t dev)
140 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE &&
141 acpi_MatchHid(dev, "ACPI0003")) {
143 device_set_desc(dev, "AC Adapter");
150 acpi_acad_attach(device_t dev)
152 struct acpi_acad_softc *sc;
153 struct acpi_softc *acpi_sc;
157 sc = device_get_softc(dev);
160 handle = acpi_get_handle(dev);
162 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
166 if (device_get_unit(dev) == 0) {
167 acpi_sc = acpi_device_get_parent_softc(dev);
168 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
169 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
170 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD,
171 &sc->status, 0, acpi_acad_sysctl, "I", "");
174 /* Get initial status after whole system is up. */
176 sc->initializing = 0;
179 * Also install a system notify handler even though this is not
180 * required by the specification. The Casio FIVA needs this.
182 AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY,
183 acpi_acad_notify_handler, dev);
184 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
185 acpi_acad_notify_handler, dev);
186 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_init_acline, dev);
192 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
194 struct acpi_acad_softc *sc;
198 sc = device_get_softc(dev);
203 * No security check required: information retrieval only. If
204 * new functions are added here, a check might be required.
207 case ACPIIO_ACAD_GET_STATUS:
208 acpi_acad_get_status(dev);
209 *(int *)addr = sc->status;
219 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
223 if (acpi_acad_get_acline(&val) != 0)
226 val = *(u_int *)oidp->oid_arg1;
227 error = sysctl_handle_int(oidp, &val, 0, req);
232 acpi_acad_init_acline(void *arg)
234 struct acpi_acad_softc *sc;
239 sc = device_get_softc(dev);
240 if (sc->initializing)
243 sc->initializing = 1;
244 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
245 "acline initialization start\n");
248 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
249 acpi_acad_get_status(dev);
250 if (status != sc->status)
255 sc->initializing = 0;
256 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
257 "acline initialization done, tried %d times\n", retry + 1);
264 acpi_acad_get_acline(int *status)
266 struct acpi_acad_softc *sc;
269 dev = devclass_get_device(acpi_acad_devclass, 0);
272 sc = device_get_softc(dev);
276 acpi_acad_get_status(dev);
277 *status = sc->status;