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Annotation of XNU/iokit/Drivers/hidsystem/drvAppleADBDevices/AppleADBButtons.cpp, 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: #include "AppleADBButtons.h"
        !            23: #include <IOKit/IOLib.h>
        !            24: #include <IOKit/pwr_mgt/IOPM.h>
        !            25: #include <IOKit/hidsystem/IOHIDTypes.h>
        !            26: #include <IOKit/hidsystem/IOHIDParameter.h>
        !            27: 
        !            28: #define super IOHIKeyboard
        !            29: OSDefineMetaClassAndStructors(AppleADBButtons,IOHIKeyboard)
        !            30: 
        !            31: bool displayWranglerFound( OSObject *, void *, IOService * );
        !            32: void button_data ( IOService * us, UInt8 adbCommand, IOByteCount length, UInt8 * data );
        !            33: void asyncFunc ( void * );
        !            34: 
        !            35: // **********************************************************************************
        !            36: // start
        !            37: //
        !            38: // **********************************************************************************
        !            39: bool AppleADBButtons::start ( IOService * theNub )
        !            40: {
        !            41:     int i;
        !            42: 
        !            43:     for ( i = 0; i < kMax_registrations; i++ ) {
        !            44:         keycodes[i] = kNullKey;
        !            45:         downHandlers[i] = NULL;
        !            46:     }
        !            47:     
        !            48:     if( !super::start(theNub))
        !            49:         return false;
        !            50: 
        !            51:     adbDevice = (IOADBDevice *)theNub;
        !            52:     if( !adbDevice->seizeForClient(this, button_data) ) {
        !            53:         IOLog("%s: Seize failed\n", getName());
        !            54:         return false;
        !            55:     }
        !            56:     registerService();
        !            57: 
        !            58:     addNotification( gIOPublishNotification,serviceMatching("IODisplayWrangler"),      // look for the display wrangler
        !            59:                      (IOServiceNotificationHandler)displayWranglerFound, this, 0 );
        !            60: 
        !            61: return true;
        !            62: }
        !            63: 
        !            64: 
        !            65: // **********************************************************************************
        !            66: // displayWranglerFound
        !            67: //
        !            68: // The Display Wrangler has appeared.  We will be calling its
        !            69: // ActivityTickle method when there is user activity.
        !            70: // **********************************************************************************
        !            71: bool displayWranglerFound( OSObject * us, void * ref, IOService * yourDevice )
        !            72: {
        !            73:  if ( yourDevice != NULL ) {
        !            74:      ((AppleADBButtons *)us)->displayManager = yourDevice;
        !            75:  }
        !            76:  return true;
        !            77: }
        !            78: 
        !            79: UInt32 AppleADBButtons::interfaceID()
        !            80: {
        !            81:     return NX_EVS_DEVICE_INTERFACE_ADB;
        !            82: }
        !            83: 
        !            84: UInt32 AppleADBButtons::deviceType()
        !            85: {
        !            86:     return adbDevice->handlerID();
        !            87: }
        !            88: 
        !            89: // **********************************************************************************
        !            90: // registerForButton
        !            91: //
        !            92: // Clients call here, specifying a button and a routine to call when that
        !            93: // button is pressed or released.
        !            94: // **********************************************************************************
        !            95: IOReturn AppleADBButtons::registerForButton ( unsigned int keycode, IOService * registrant, button_handler handler, bool down )
        !            96: {
        !            97:     int i;
        !            98: 
        !            99:     for ( i = 0; i < kMax_registrations; i++ ) {
        !           100:         if ( keycodes[i] == kNullKey ) {
        !           101:             if ( down ) {
        !           102:                 registrants[i] = registrant;
        !           103:                 downHandlers[i] = handler;
        !           104:                 keycodes[i] = keycode;
        !           105:                 break;
        !           106:             }
        !           107:         }
        !           108:     }
        !           109:     return kIOReturnSuccess;
        !           110: }
        !           111: 
        !           112: // **********************************************************************************
        !           113: // button_data
        !           114: //
        !           115: // **********************************************************************************
        !           116: void button_data ( IOService * us, UInt8 adbCommand, IOByteCount length, UInt8 * data )
        !           117: {
        !           118: ((AppleADBButtons *)us)->packet(data,length,adbCommand);
        !           119: }
        !           120: 
        !           121: 
        !           122: // **********************************************************************************
        !           123: // packet
        !           124: //
        !           125: // **********************************************************************************
        !           126: IOReturn AppleADBButtons::packet (UInt8 * data, IOByteCount, UInt8 adbCommand )
        !           127: {
        !           128:     unsigned int       keycode;
        !           129:     bool               down;
        !           130: 
        !           131:     keycode = *data;
        !           132:     down = ((keycode & 0x80) == 0);
        !           133:     keycode &= 0x7f;
        !           134: 
        !           135:     dispatchButtonEvent(keycode,down);
        !           136: 
        !           137:     keycode = *(data + 1);
        !           138:     if( keycode != 0xff ) {
        !           139:         down = ((keycode & 0x80) == 0);
        !           140:         keycode &= 0x7f;
        !           141:         dispatchButtonEvent(keycode,down);
        !           142:     }
        !           143:     
        !           144:     if ( displayManager != NULL ) {                    // if there is a display manager, tell
        !           145:         displayManager->activityTickle(kIOPMSuperclassPolicy1);        // it there is user activity
        !           146:     }
        !           147:     
        !           148:     return kIOReturnSuccess;
        !           149: }
        !           150: 
        !           151: 
        !           152: // **********************************************************************************
        !           153: // dispatchButtonEvent
        !           154: //
        !           155: // Look for any registered handlers for this button and notify them.
        !           156: // **********************************************************************************
        !           157: void AppleADBButtons::dispatchButtonEvent (unsigned int keycode, bool down )
        !           158: {
        !           159:     int i;
        !           160:     AbsoluteTime now;
        !           161: 
        !           162:     clock_get_uptime(&now);
        !           163:     
        !           164:     for ( i = 0; i < kMax_registrations; i++ ) {
        !           165:         if ( keycodes[i] == keycode ) {
        !           166:             if ( down ) {
        !           167:                 if (downHandlers[i] != NULL ) {
        !           168:                     thread_call_func((thread_call_func_t)downHandlers[i],
        !           169:                                      (thread_call_param_t)registrants[i],
        !           170:                                      true);
        !           171:                 }
        !           172:             }
        !           173:         }
        !           174:     }
        !           175: 
        !           176:     dispatchKeyboardEvent(keycode, down, now);
        !           177: }
        !           178: 
        !           179: const unsigned char *AppleADBButtons::defaultKeymapOfLength(UInt32 *length)
        !           180: {
        !           181:     static const unsigned char appleADBButtonsKeyMap[] = {
        !           182:         0x00, 0x00,    // chars
        !           183:         0x00,          // no modifier keys
        !           184:         0x00,          // no defs
        !           185:         0x00,          // no seqs
        !           186:         0x05,          // 5 special keys
        !           187:         NX_KEYTYPE_SOUND_UP, kVolume_up,
        !           188:         NX_KEYTYPE_SOUND_DOWN, kVolume_down,
        !           189:         NX_KEYTYPE_MUTE, kMute,
        !           190:         NX_KEYTYPE_BRIGHTNESS_UP, kBrightness_up,
        !           191:         NX_KEYTYPE_BRIGHTNESS_DOWN, kBrightness_down
        !           192:     };
        !           193:     
        !           194:     *length = sizeof(appleADBButtonsKeyMap);
        !           195:     
        !           196:     return appleADBButtonsKeyMap;
        !           197: }
        !           198: 
        !           199: IOReturn AppleADBButtons::setParamProperties(OSDictionary *dict)
        !           200: {
        !           201:     if (dict->getObject(kIOHIDKeyMappingKey)) {
        !           202:         dict->removeObject(kIOHIDKeyMappingKey);
        !           203:         // Do we also need to release this object? - hopefully not
        !           204:     }
        !           205: 
        !           206:     return super::setParamProperties(dict);
        !           207: }

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