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 1.26 2004/05/30 20:08:23 phk Exp $
27 * $DragonFly: src/sys/dev/acpica5/acpi_acad.c,v 1.4 2004/08/02 19:51:07 dillon Exp $
31 #include <sys/param.h>
32 #include <sys/kernel.h>
35 #include <machine/bus.h>
37 #include <sys/ioccom.h>
38 #include <sys/malloc.h>
39 #include <sys/module.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);
87 MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
90 acpi_acad_get_status(void *context)
92 struct acpi_acad_softc *sc;
98 sc = device_get_softc(dev);
99 h = acpi_get_handle(dev);
100 if (ACPI_FAILURE(acpi_GetInteger(h, "_PSR", &newstatus))) {
105 if (sc->status != newstatus) {
106 sc->status = newstatus;
108 /* Set system power profile based on AC adapter status */
109 power_profile_set_state(sc->status ? POWER_PROFILE_PERFORMANCE :
110 POWER_PROFILE_ECONOMY);
111 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
112 "%s Line\n", sc->status ? "On" : "Off");
114 acpi_UserNotify("ACAD", h, sc->status);
119 acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
123 dev = (device_t)context;
125 case ACPI_DEVICE_CHECK_PNP:
126 case ACPI_DEVICE_CHECK_EXISTENCE:
127 case ACPI_POWERSOURCE_STAT_CHANGE:
128 /* Temporarily. It is better to notify policy manager */
129 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_get_status, context);
132 device_printf(dev, "unknown notify %#x\n", notify);
138 acpi_acad_probe(device_t dev)
140 if (acpi_get_type(dev) == ACPI_TYPE_DEVICE && !acpi_disabled("acad") &&
141 acpi_MatchHid(dev, "ACPI0003")) {
142 device_set_desc(dev, "AC Adapter");
149 acpi_acad_attach(device_t dev)
151 struct acpi_acad_softc *sc;
152 struct acpi_softc *acpi_sc;
156 sc = device_get_softc(dev);
159 handle = acpi_get_handle(dev);
161 error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
165 if (device_get_unit(dev) == 0) {
166 acpi_sc = acpi_device_get_parent_softc(dev);
167 SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
168 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
169 OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD,
170 &sc->status, 0, acpi_acad_sysctl, "I", "");
173 /* Get initial status after whole system is up. */
175 sc->initializing = 0;
178 * Also install a system notify handler even though this is not
179 * required by the specification. The Casio FIVA needs this.
181 AcpiInstallNotifyHandler(handle, ACPI_SYSTEM_NOTIFY,
182 acpi_acad_notify_handler, dev);
183 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY,
184 acpi_acad_notify_handler, dev);
185 AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_acad_init_acline, dev);
191 acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
193 struct acpi_acad_softc *sc;
197 sc = device_get_softc(dev);
202 * No security check required: information retrieval only. If
203 * new functions are added here, a check might be required.
206 case ACPIIO_ACAD_GET_STATUS:
207 acpi_acad_get_status(dev);
208 *(int *)addr = sc->status;
218 acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
222 if (acpi_acad_get_acline(&val) != 0)
225 val = *(u_int *)oidp->oid_arg1;
226 error = sysctl_handle_int(oidp, &val, 0, req);
231 acpi_acad_init_acline(void *arg)
233 struct acpi_acad_softc *sc;
238 sc = device_get_softc(dev);
239 if (sc->initializing)
242 sc->initializing = 1;
243 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
244 "acline initialization start\n");
247 for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
248 acpi_acad_get_status(dev);
249 if (status != sc->status)
254 sc->initializing = 0;
255 ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
256 "acline initialization done, tried %d times\n", retry + 1);
263 acpi_acad_get_acline(int *status)
265 struct acpi_acad_softc *sc;
268 dev = devclass_get_device(acpi_acad_devclass, 0);
271 sc = device_get_softc(dev);
275 acpi_acad_get_status(dev);
276 *status = sc->status;