Rename printf -> kprintf in sys/ and add some defines where necessary
[dragonfly.git] / sys / kern / subr_power.c
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.
25  * $DragonFly: src/sys/kern/subr_power.c,v 1.2 2006/12/23 00:35:04 swildner Exp $
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
36 static u_int             power_pm_type  = POWER_PM_TYPE_NONE;
37 static power_pm_fn_t     power_pm_fn    = NULL;
38 static void             *power_pm_arg   = NULL;
39
40 int
41 power_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
58 u_int
59 power_pm_get_type(void)
60 {
61
62         return (power_pm_type);
63 }
64
65 void
66 power_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
83 static int      power_profile_state = POWER_PROFILE_PERFORMANCE;
84
85 int
86 power_profile_get_state(void)
87 {
88         return (power_profile_state);
89 }
90
91 void
92 power_profile_set_state(int state) 
93 {
94         int             changed;
95     
96         if (state != power_profile_state) {
97                 power_profile_state = state;
98                 changed = 1;
99                 kprintf("system power profile changed to '%s'\n",
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