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Annotation of XNU/iokit/Drivers/audio/drvPPCAwacs/PPCAwacs.h, revision 1.1

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:  * Copyright (c) 1998 Apple Computer, Inc.  All rights reserved. 
        !            24:  *
        !            25:  * Interface definition for the Awacs audio Controller 
        !            26:  *
        !            27:  * HISTORY
        !            28:  *
        !            29:  */
        !            30: 
        !            31: #ifndef _PPCAWACS_H
        !            32: #define _PPCAWACS_H
        !            33: 
        !            34: #include <IOKit/audio/IOAudioBus.h>
        !            35: 
        !            36: struct awacs_regmap_t;
        !            37: struct IODBDMAChannelRegisters;
        !            38: struct IODBDMADescriptor;
        !            39: 
        !            40: // 2 Digital DMA streams
        !            41: #define kNumDMAStreams 2
        !            42: 
        !            43: // Controls for awacs/screamer
        !            44: enum {
        !            45:     kSpeakerMute = 0,
        !            46:     kSpeakerVolLeft = 1,
        !            47:     kSpeakerVolRight = 2,
        !            48:     kHeadphonesMute = 3,
        !            49:     kHeadphonesVolLeft = 4,
        !            50:     kHeadphonesVolRight = 5,
        !            51:     kMicrophoneMute = 6,
        !            52:     kCDMute = 7,
        !            53:     kMixerInVolLeft = 8,
        !            54:     kMixerInVolRight = 9,
        !            55:     kPassThruVolLeft = 10,
        !            56:     kPassThruVolRight = 11,
        !            57:     kPassThruMute = 12,
        !            58:     kLineOutMute = 13,
        !            59:     kNumControls
        !            60: };
        !            61: 
        !            62: class PPCAwacs : public IOAudioBus
        !            63: {
        !            64:     OSDeclareDefaultStructors(PPCAwacs)
        !            65: 
        !            66: protected:
        !            67:     volatile awacs_regmap_t *  fIOBaseAwacs;
        !            68:     u_int32_t                  fSoundControlRegister;
        !            69:     u_int32_t                  fCodecControlRegister[8];
        !            70:     u_int32_t                  fCodecStatus;
        !            71:     bool                       fIICAudioDevPresent;
        !            72:     bool                       fIsG4WithAwacs;
        !            73:     bool                       fIsiMacDVWithAwacs;
        !            74:     IOAudioComponentImpl *     fInputComponents[4];
        !            75: 
        !            76:     // Stuff extracted from the sound device tree nub
        !            77:     int                                fDetects;
        !            78:     int                                fOutputs;
        !            79: 
        !            80: public:
        !            81:     bool init(OSDictionary * properties = 0);
        !            82:     void free();
        !            83:     bool start(IOService * provider);
        !            84:     void stop(IOService *provider);
        !            85: 
        !            86:     /*
        !            87:      * Set a control to a value
        !            88:      * Called by IOAudioControls, on the workloop thread.
        !            89:      */
        !            90:     virtual IOReturn SetControl(UInt16 id, int val);
        !            91: 
        !            92: protected:
        !            93:     virtual void CreateAudioTopology(IOCommandQueue *queue);
        !            94:     
        !            95:     // Override these so we can call checkStatus().
        !            96:     virtual void DoClockTick(IOTimerEventSource *);
        !            97:     virtual void calculateTickInterval(AbsoluteTime *tickInterval);
        !            98: 
        !            99:     // Poll awacs status, since it doesn't generate interrupts
        !           100:     virtual void checkStatus();
        !           101: 
        !           102: };
        !           103: #endif /* !_PPCAWACS_H */

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