diff options
Diffstat (limited to 'sys/kern/subr_power.c')
-rw-r--r-- | sys/kern/subr_power.c | 76 |
1 files changed, 76 insertions, 0 deletions
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 <sys/param.h> +#include <sys/systm.h> + +#include <sys/power.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; + +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); +} + |