|
1 /* |
|
2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Implementation |
|
15 * |
|
16 */ |
|
17 |
|
18 #include <usbotgdefs.h> |
|
19 |
|
20 #include "cusbvbusobserver.h" |
|
21 |
|
22 #include "definitions.h" |
|
23 #include "debug.h" |
|
24 #include "panic.h" |
|
25 |
|
26 // --------------------------------------------------------------------------- |
|
27 // |
|
28 // --------------------------------------------------------------------------- |
|
29 // |
|
30 CUsbVBusObserver::CUsbVBusObserver() : |
|
31 CActive(EPriorityStandard) |
|
32 { |
|
33 CActiveScheduler::Add(this); |
|
34 } |
|
35 |
|
36 // --------------------------------------------------------------------------- |
|
37 // |
|
38 // --------------------------------------------------------------------------- |
|
39 // |
|
40 void CUsbVBusObserver::ConstructL() |
|
41 { |
|
42 LOG_FUNC |
|
43 |
|
44 LEAVEIFERROR(iVBus.Attach(KUidUsbManCategory, |
|
45 KUsbOtgVBusPoweredProperty)); |
|
46 |
|
47 } |
|
48 |
|
49 // --------------------------------------------------------------------------- |
|
50 // |
|
51 // --------------------------------------------------------------------------- |
|
52 // |
|
53 CUsbVBusObserver* CUsbVBusObserver::NewL() |
|
54 { |
|
55 LOG_FUNC |
|
56 |
|
57 CUsbVBusObserver* self = new (ELeave) CUsbVBusObserver(); |
|
58 CleanupStack::PushL(self); |
|
59 self->ConstructL(); |
|
60 CleanupStack::Pop(self); |
|
61 return self; |
|
62 } |
|
63 |
|
64 // --------------------------------------------------------------------------- |
|
65 // |
|
66 // --------------------------------------------------------------------------- |
|
67 // |
|
68 CUsbVBusObserver::~CUsbVBusObserver() |
|
69 { |
|
70 LOG_FUNC |
|
71 |
|
72 Cancel(); |
|
73 |
|
74 iVBus.Close(); |
|
75 |
|
76 iObservers.Close(); |
|
77 |
|
78 } |
|
79 |
|
80 // --------------------------------------------------------------------------- |
|
81 // |
|
82 // --------------------------------------------------------------------------- |
|
83 // |
|
84 CUsbVBusObserver::TState CUsbVBusObserver::VBus() /* not const, because for some reason RProperty::Get is not const */ |
|
85 { |
|
86 |
|
87 TInt val(0); |
|
88 |
|
89 TInt err = iVBus.Get(val); |
|
90 |
|
91 if (KErrNone != err) |
|
92 { |
|
93 LOG("CanNotGetVBusProperty" ) |
|
94 PANIC( ECanNotGetVBusProperty); |
|
95 } |
|
96 |
|
97 return (0 == val ? EVBusDown : EVBusUp); |
|
98 } |
|
99 |
|
100 // --------------------------------------------------------------------------- |
|
101 // |
|
102 // --------------------------------------------------------------------------- |
|
103 // |
|
104 void CUsbVBusObserver::SubscribeL(MUsbVBusObserver& aObserver) |
|
105 { |
|
106 LOG_FUNC |
|
107 |
|
108 // check if the same observer already exist in a list |
|
109 if (KErrNotFound != iObservers.Find(&aObserver)) |
|
110 { |
|
111 LOG( "Observer already exists" ); |
|
112 PANIC( EObserverAlreadyExists); |
|
113 return; |
|
114 } |
|
115 |
|
116 iObservers.AppendL(&aObserver); |
|
117 |
|
118 if (KFirst == iObservers.Count()) // first item |
|
119 { |
|
120 iVBus.Subscribe(iStatus); |
|
121 SetActive(); |
|
122 } |
|
123 } |
|
124 |
|
125 // --------------------------------------------------------------------------- |
|
126 // |
|
127 // --------------------------------------------------------------------------- |
|
128 // |
|
129 void CUsbVBusObserver::UnsubscribeL(MUsbVBusObserver& aObserver) |
|
130 { |
|
131 LOG_FUNC |
|
132 |
|
133 TInt i(iObservers.Find(&aObserver)); |
|
134 if (KErrNotFound == i) |
|
135 { |
|
136 LOG("Observer not found" ); |
|
137 PANIC( ECanNotFindVBusObserver); |
|
138 return; |
|
139 } |
|
140 |
|
141 iObservers.Remove(i); |
|
142 |
|
143 if (0 == iObservers.Count()) // no observers anymore |
|
144 { |
|
145 // cancel pending request, if any |
|
146 Cancel(); |
|
147 } |
|
148 } |
|
149 |
|
150 // --------------------------------------------------------------------------- |
|
151 // |
|
152 // --------------------------------------------------------------------------- |
|
153 // |
|
154 void CUsbVBusObserver::RunL() |
|
155 { |
|
156 LOG_FUNC |
|
157 |
|
158 LOG1( "iStatus = %d" , iStatus.Int()); |
|
159 |
|
160 // if error occured, tell to Observers |
|
161 if (KErrNone != iStatus.Int()) |
|
162 { |
|
163 for (TInt i(0); i < iObservers.Count(); ++i) |
|
164 { |
|
165 iObservers[i]->VBusObserverErrorL(iStatus.Int()); |
|
166 } |
|
167 return; |
|
168 } |
|
169 |
|
170 // re-issue request first |
|
171 iVBus.Subscribe(iStatus); |
|
172 SetActive(); |
|
173 |
|
174 // then process property change |
|
175 TState state(VBus()); |
|
176 |
|
177 // report change |
|
178 switch (state) |
|
179 { |
|
180 case EVBusUp: |
|
181 { |
|
182 LOG("VBus UP"); |
|
183 |
|
184 for (TInt i(0); i < iObservers.Count(); ++i) |
|
185 { |
|
186 iObservers[i]->VBusUpL(); |
|
187 } |
|
188 break; |
|
189 } |
|
190 ; |
|
191 |
|
192 case EVBusDown: |
|
193 { |
|
194 LOG("VBus DOWN"); |
|
195 |
|
196 for (TInt i(0); i < iObservers.Count(); ++i) |
|
197 { |
|
198 iObservers[i]->VBusDownL(); |
|
199 } |
|
200 break; |
|
201 } |
|
202 ; |
|
203 |
|
204 default: |
|
205 { |
|
206 LOG("WrongVBusState"); |
|
207 PANIC( EWrongVBusState); |
|
208 } |
|
209 } |
|
210 } |
|
211 |
|
212 // --------------------------------------------------------------------------- |
|
213 // |
|
214 // --------------------------------------------------------------------------- |
|
215 // |
|
216 void CUsbVBusObserver::DoCancel() |
|
217 { |
|
218 iVBus.Cancel(); |
|
219 } |
|
220 |
|
221 // --------------------------------------------------------------------------- |
|
222 // |
|
223 // --------------------------------------------------------------------------- |
|
224 // |
|
225 TInt CUsbVBusObserver::RunError(TInt aError) |
|
226 { |
|
227 LOG_FUNC |
|
228 |
|
229 LOG1( "aError = %d" , aError); |
|
230 |
|
231 // try to continue |
|
232 return KErrNone; |
|
233 } |