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1.1 root 1: /*
2: * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * 1 Dec 1998 suurballe Created.
24: */
25:
26: #include <IOKit/IOSyncer.h>
27: #include "IOPMURTCController.h"
28: #include "pmupriv.h"
29:
30: //#define super IORTCController
31: //OSDefineMetaClassAndStructors(IOPMURTCController, IORTCController)
32:
33: #define super IOService
34: OSDefineMetaClassAndStructors(IOPMURTCController, IOService)
35:
36:
37: // **********************************************************************************
38: // init
39: //
40: // **********************************************************************************
41: bool IOPMURTCController::init ( OSDictionary * regEntry, ApplePMU * driver )
42: {
43: PMUdriver = driver;
44:
45: return super::init(regEntry);
46: }
47:
48:
49: // **********************************************************************************
50: // tickHandler
51: //
52: // **********************************************************************************
53: void tickHandler ( IOService * us, UInt32, UInt8 * )
54: {
55: ((IOPMURTCController *)us)->clientHandler(((IOPMURTCController *)us)->tickClient);
56: }
57:
58:
59: // **********************************************************************************
60: // registerForClockTicks
61: //
62: // The RTC driver is calling to tell us that it is prepared to receive clock
63: // ticks every second. The parameter block tells who to call when we get one.
64: //
65: // **********************************************************************************
66: void IOPMURTCController::registerForClockTicks ( IOService * client, RTC_tick_handler handler )
67: {
68: clientHandler = handler;
69: tickClient = client;
70: PMUdriver->registerForClockInterrupts ( tickHandler, this );
71: }
72:
73:
74: // **********************************************************************************
75: // setRealTimeClock
76: //
77: // The RTC driver is calling to set the real time clock. We translate this into
78: // a PMU command and enqueue it to our command queue.
79: //
80: // **********************************************************************************
81: IOReturn IOPMURTCController::setRealTimeClock ( UInt8 * newTime )
82: {
83: PMUrequest request;
84:
85: if ( newTime == NULL ) {
86: return kPMUParameterError;
87: }
88:
89: request.sync = IOSyncer::create();
90: request.pmCommand = kPMUtimeWrite;
91: request.pmFlag = false;
92: request.pmSLength1 = 0;
93: request.pmSBuffer2 = newTime;
94: request.pmSLength2 = 4;
95: request.pmRBuffer = NULL;
96:
97: PMUdriver->enqueueCommand(&request);
98: request.sync->wait(); // wait till done
99:
100: return kPMUNoError;
101: }
102:
103:
104: // **********************************************************************************
105: // getRealTimeClock
106: //
107: // The RTC driver is calling to read the real time clock. We translate this into
108: // a PMU command and enqueue it to our command queue.
109: //
110: // The length parameter is ignored on entry. On exit it is set to the length
111: // in bytes of the time read.
112: // **********************************************************************************
113: IOReturn IOPMURTCController::getRealTimeClock ( UInt8 * currentTime, IOByteCount * length )
114: {
115: PMUrequest request;
116:
117: if ( currentTime == NULL ) {
118: return kPMUParameterError;
119: }
120:
121: request.sync = IOSyncer::create();
122: request.pmCommand = kPMUtimeRead;
123: request.pmFlag = false;
124: request.pmSLength1 = 0;
125: request.pmSBuffer2 = NULL;
126: request.pmSLength2 = 0;
127: request.pmRBuffer = currentTime;
128:
129: PMUdriver->enqueueCommand(&request);
130: request.sync->wait(); // wait till done
131:
132: *length = request.pmRLength; // set caller's length
133:
134: return kPMUNoError;
135: }
136:
137:
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