2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 Mitsuru IWASAKI
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/eventhandler.h>
34 #include <sys/power.h>
36 #include <sys/systm.h>
37 #include <sys/taskqueue.h>
39 static u_int power_pm_type = POWER_PM_TYPE_NONE;
40 static power_pm_fn_t power_pm_fn = NULL;
41 static void *power_pm_arg = NULL;
42 static struct task power_pm_task;
45 power_pm_deferred_fn(void *arg, int pending)
47 int state = (intptr_t)arg;
49 power_pm_fn(POWER_CMD_SUSPEND, power_pm_arg, state);
53 power_pm_register(u_int pm_type, power_pm_fn_t pm_fn, void *pm_arg)
57 if (power_pm_type == POWER_PM_TYPE_NONE ||
58 power_pm_type == pm_type) {
59 power_pm_type = pm_type;
61 power_pm_arg = pm_arg;
63 TASK_INIT(&power_pm_task, 0, power_pm_deferred_fn, NULL);
72 power_pm_get_type(void)
75 return (power_pm_type);
79 power_pm_suspend(int state)
81 if (power_pm_fn == NULL)
84 if (state != POWER_SLEEP_STATE_STANDBY &&
85 state != POWER_SLEEP_STATE_SUSPEND &&
86 state != POWER_SLEEP_STATE_HIBERNATE)
88 power_pm_task.ta_context = (void *)(intptr_t)state;
89 taskqueue_enqueue(taskqueue_thread, &power_pm_task);
96 static int power_profile_state = POWER_PROFILE_PERFORMANCE;
99 power_profile_get_state(void)
101 return (power_profile_state);
105 power_profile_set_state(int state)
109 if (state != power_profile_state) {
110 power_profile_state = state;
113 printf("system power profile changed to '%s'\n",
114 (state == POWER_PROFILE_PERFORMANCE) ?
115 "performance" : "economy");
122 EVENTHANDLER_INVOKE(power_profile_change, 0);