From f1842a13d838c3a94044961bbf70910f54a49956 Mon Sep 17 00:00:00 2001 From: iwasaki Date: Thu, 1 Nov 2001 16:34:07 +0000 Subject: Some fix for the recent apm module changes. - 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@ --- sys/kern/subr_power.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sys/kern/subr_power.c (limited to 'sys/kern/subr_power.c') diff --git a/sys/kern/subr_power.c b/sys/kern/subr_power.c new file mode 100644 index 0000000..d73958c --- /dev/null +++ b/sys/kern/subr_power.c @@ -0,0 +1,76 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +#include +#include + +#include + +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; + +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; + } 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_fn(POWER_CMD_SUSPEND, power_pm_arg, state); +} + -- cgit v1.1