Rename printf -> kprintf in sys/ and add some defines where necessary
[dragonfly.git] / sys / kern / subr_power.c
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1/*-
2 * Copyright (c) 2001 Mitsuru IWASAKI
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
6ea70f76 25 * $DragonFly: src/sys/kern/subr_power.c,v 1.2 2006/12/23 00:35:04 swildner Exp $
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26 */
27
28#include <sys/cdefs.h>
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/proc.h>
33
34#include <sys/power.h>
35
36static u_int power_pm_type = POWER_PM_TYPE_NONE;
37static power_pm_fn_t power_pm_fn = NULL;
38static void *power_pm_arg = NULL;
39
40int
41power_pm_register(u_int pm_type, power_pm_fn_t pm_fn, void *pm_arg)
42{
43 int error;
44
45 if (power_pm_type == POWER_PM_TYPE_NONE ||
46 power_pm_type == pm_type) {
47 power_pm_type = pm_type;
48 power_pm_fn = pm_fn;
49 power_pm_arg = pm_arg;
50 error = 0;
51 } else {
52 error = ENXIO;
53 }
54
55 return (error);
56}
57
58u_int
59power_pm_get_type(void)
60{
61
62 return (power_pm_type);
63}
64
65void
66power_pm_suspend(int state)
67{
68 if (power_pm_fn == NULL)
69 return;
70
71 if (state != POWER_SLEEP_STATE_STANDBY &&
72 state != POWER_SLEEP_STATE_SUSPEND &&
73 state != POWER_SLEEP_STATE_HIBERNATE)
74 return;
75
76 power_pm_fn(POWER_CMD_SUSPEND, power_pm_arg, state);
77}
78
79/*
80 * Power profile.
81 */
82
83static int power_profile_state = POWER_PROFILE_PERFORMANCE;
84
85int
86power_profile_get_state(void)
87{
88 return (power_profile_state);
89}
90
91void
92power_profile_set_state(int state)
93{
94 int changed;
95
96 if (state != power_profile_state) {
97 power_profile_state = state;
98 changed = 1;
6ea70f76 99 kprintf("system power profile changed to '%s'\n",
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100 (state == POWER_PROFILE_PERFORMANCE) ? "performance" : "economy");
101 } else {
102 changed = 0;
103 }
104
105 if (changed)
106 EVENTHANDLER_INVOKE(power_profile_change, 0);
107}
108