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Annotation of kernel/machdep/ppc/APM.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: /*
                     26:  * Copyright 1994 NeXT Computer, Inc.
                     27:  * All rights reserved.
                     28:  */
                     29: 
                     30: /*
                     31:  * Power Management (PM) kernel interface.
                     32:  */
                     33: 
                     34: #import <kern/power.h>
                     35: 
                     36: /*
                     37:  * Initialize PM support.  Returns TRUE if PM is available.
                     38:  */
                     39: PMReturn PMConnect(void)
                     40: {
                     41:     return PM_R_SUCCESS;
                     42: }
                     43: 
                     44: /*
                     45:  * Return PM control to previous user (probably the BIOS).
                     46:  */
                     47: PMReturn PMDisconnect(void)
                     48: {
                     49:     return PM_R_SUCCESS;
                     50: }
                     51: 
                     52: /*
                     53:  * Inform PM of the CPU state.  If the CPU is idle, PM may
                     54:  * put the CPU in a power-saving state until the next system event
                     55:  * (typically an interrupt).  Marking the CPU busy will ensure
                     56:  * that the CPU is running at full speed.
                     57:  */
                     58: PMReturn PMSetCpuState(PMCpuState state)
                     59: {
                     60:     return PM_R_SUCCESS;
                     61: }
                     62: 
                     63: /*
                     64:  * Set the power state of a device or the entire computer.
                     65:  */
                     66: PMReturn PMSetPowerState(PMDeviceID device, PMPowerState state)
                     67: {
                     68:     return PM_R_BAD_STATE;
                     69: }
                     70: 
                     71: /*
                     72:  * Get a power event from PM, if one has occurred.
                     73:  */
                     74: PMReturn PMGetPowerEvent(PMPowerEvent *event)
                     75: {
                     76:     return PM_R_NO_EVENT;
                     77: }
                     78: 
                     79: /*
                     80:  * Get the power state of the computer.
                     81:  */
                     82: PMReturn PMGetPowerStatus(PMPowerStatus *status)
                     83: {
                     84:     status->lineStatus = PM_LINE_UNKNOWN;
                     85:     status->batteryStatus = PM_BATT_UNKNOWN;
                     86:     status->batteryLife = 0;
                     87:     return PM_R_SUCCESS;
                     88: }
                     89: 
                     90: /*
                     91:  * Enable or disable power management by the computer.
                     92:  * If enable == PM_ENABLED, the computer can take power saving steps
                     93:  * when the CPU state is idle.  If enable == PM_DISABLED, no automatic
                     94:  * power saving steps will be taken and power management functions
                     95:  * will be disabled.
                     96:  */
                     97: PMReturn PMSetPowerManagement(
                     98:     PMDeviceID device,
                     99:     PMPowerManagementState state
                    100: )
                    101: {
                    102:     return PM_R_SUCCESS;
                    103: }
                    104: 
                    105: /*
                    106:  * Restores the default settings for all power management settings.
                    107:  */
                    108: PMReturn PMRestoreDefaults(void)
                    109: {
                    110:     return PM_R_SUCCESS;
                    111: }
                    112: 
                    113: /*
                    114:  * Update current kernel clock from real-time clock.
                    115:  */
                    116: void PMUpdateClock(void)
                    117: {
                    118: }
                    119: 
                    120: 

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