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f9390180fe
- Now that apm loadable module can inform its existence to other kernel components (e.g. i386/isa/clock.c:startrtclock()'s TCS hack). - Exchange priority of SI_SUB_CPU and SI_SUB_KLD for above purpose. - Add simple arbitration mechanism for APM vs. ACPI. This prevents the kernel enables both of them. - Remove obsolete `#ifdef DEV_APM' related code. - Add abstracted interface for Powermanagement operations. Public apm(4) functions, such as apm_suspend(), should be replaced new interfaces. Currently only power_pm_suspend (successor of apm_suspend) is implemented. Reviewed by: peter, arch@ and audit@
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*-
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* Copyright (c) 2001 Mitsuru IWASAKI
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/power.h>
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static u_int power_pm_type = POWER_PM_TYPE_NONE;
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static power_pm_fn_t power_pm_fn = NULL;
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static void *power_pm_arg = NULL;
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int
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power_pm_register(u_int pm_type, power_pm_fn_t pm_fn, void *pm_arg)
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{
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int error;
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if (power_pm_type == POWER_PM_TYPE_NONE ||
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power_pm_type == pm_type) {
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power_pm_type = pm_type;
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power_pm_fn = pm_fn;
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power_pm_arg = pm_arg;
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error = 0;
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} else {
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error = ENXIO;
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}
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return (error);
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}
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u_int
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power_pm_get_type(void)
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{
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return (power_pm_type);
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}
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void
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power_pm_suspend(int state)
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{
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if (power_pm_fn == NULL)
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return;
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if (state != POWER_SLEEP_STATE_STANDBY &&
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state != POWER_SLEEP_STATE_SUSPEND &&
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state != POWER_SLEEP_STATE_HIBERNATE)
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return;
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power_pm_fn(POWER_CMD_SUSPEND, power_pm_arg, state);
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}
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