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 1.1 2003/09/24 03:32:17 drhodus 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 printf("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 } 108 109