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/*-
* Copyright (c) 2001 Mitsuru IWASAKI
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/power.h>
#include <sys/taskqueue.h>
static u_int power_pm_type = POWER_PM_TYPE_NONE;
static power_pm_fn_t power_pm_fn = NULL;
static void *power_pm_arg = NULL;
static struct task power_pm_task;
static void
power_pm_deferred_fn(void *arg, int pending)
{
int state = (intptr_t)arg;
power_pm_fn(POWER_CMD_SUSPEND, power_pm_arg, state);
}
int
power_pm_register(u_int pm_type, power_pm_fn_t pm_fn, void *pm_arg)
{
int error;
if (power_pm_type == POWER_PM_TYPE_NONE ||
power_pm_type == pm_type) {
power_pm_type = pm_type;
power_pm_fn = pm_fn;
power_pm_arg = pm_arg;
error = 0;
TASK_INIT(&power_pm_task, 0, power_pm_deferred_fn, NULL);
} else {
error = ENXIO;
}
return (error);
}
u_int
power_pm_get_type(void)
{
return (power_pm_type);
}
void
power_pm_suspend(int state)
{
if (power_pm_fn == NULL)
return;
if (state != POWER_SLEEP_STATE_STANDBY &&
state != POWER_SLEEP_STATE_SUSPEND &&
state != POWER_SLEEP_STATE_HIBERNATE)
return;
power_pm_task.ta_context = (void *)(intptr_t)state;
taskqueue_enqueue(taskqueue_thread, &power_pm_task);
}
/*
* Power profile.
*/
static int power_profile_state = POWER_PROFILE_PERFORMANCE;
int
power_profile_get_state(void)
{
return (power_profile_state);
}
void
power_profile_set_state(int state)
{
int changed;
if (state != power_profile_state) {
power_profile_state = state;
changed = 1;
if (bootverbose) {
printf("system power profile changed to '%s'\n",
(state == POWER_PROFILE_PERFORMANCE) ?
"performance" : "economy");
}
} else {
changed = 0;
}
if (changed)
EVENTHANDLER_INVOKE(power_profile_change, 0);
}
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