51068e0bd3
Test: Compiles and test passes Bug: 32998929 Change-Id: I6787b90e5e745b32c7a5a951203496cc614fdc10 Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
106 lines
4 KiB
Text
106 lines
4 KiB
Text
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.nfc@1.0;
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import INfcClientCallback;
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interface INfc {
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/*
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* Opens the NFC controller device and performs initialization.
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* This may include patch download and other vendor-specific initialization.
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*
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* If open completes successfully, the controller should be ready to perform
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* NCI initialization - ie accept CORE_RESET and subsequent commands through
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* the write() call.
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*
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* If open() returns NfcStatus::OK, the NCI stack will wait for a
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* NfcEvent.OPEN_CPLT before continuing.
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*
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* If open() returns NfcStatus::FAILED, the NCI stack will stop.
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*
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*/
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@entry
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@callflow(next={"write", "coreInitialized", "prediscover", "powerCycle", "controlGranted"})
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open(INfcClientCallback clientCallback) generates (NfcStatus status);
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/*
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* Performs an NCI write.
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*
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* This method may queue writes and return immediately. The only
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* requirement is that the writes are executed in order.
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*
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* @return number of bytes written to the NFCC
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*/
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@callflow(next={"write", "prediscover", "coreInitialized", "close", "powerCycle",
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"controlGranted"})
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write(NfcData data) generates (uint32_t retval);
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/*
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* coreInitialized() is called after the CORE_INIT_RSP is received from the
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* NFCC. At this time, the HAL can do any chip-specific configuration.
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*
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* If coreInitialized() returns NfcStatus::OK, the NCI stack will wait for a
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* NfcEvent.POST_INIT_CPLT before continuing.
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*
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* If coreInitialized() returns NfcStatus::FAILED, the NCI stack will
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* continue immediately.
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*/
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@callflow(next={"write", "prediscover", "close"})
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coreInitialized(NfcData data) generates (NfcStatus status);
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/*
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* prediscover is called every time before starting RF discovery.
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* It is a good place to do vendor-specific configuration that must be
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* performed every time RF discovery is about to be started.
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*
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* If prediscover() returns NfcStatus::OK, the NCI stack will wait for a
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* NfcEvent.PREDISCOVER_CPLT before continuing.
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*
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* If prediscover() returns NfcStatus::FAILED, the NCI stack will start
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* RF discovery immediately.
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*/
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@callflow(next={"write", "close", "coreInitialized", "powerCycle", "controlGranted"})
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prediscover() generates (NfcStatus status);
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/*
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* Close the NFC controller. Should free all resources.
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*
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* @return NfcStatus::OK on success and NfcStatus::FAILED on error.
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*/
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@exit
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close() generates (NfcStatus status);
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/*
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* Grant HAL the exclusive control to send NCI commands.
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* Called in response to NfcEvent.REQUEST_CONTROL.
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* Must only be called when there are no NCI commands pending.
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* NfcEvent.RELEASE_CONTROL will notify when HAL no longer needs exclusive control.
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*
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* @return NfcStatus::OK on success and NfcStatus::FAILED on error.
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*/
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@callflow(next={"write", "close", "prediscover", "coreInitialized", "powerCycle"})
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controlGranted() generates (NfcStatus status);
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/*
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* Restart controller by power cyle;
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* NfcEvent.OPEN_CPLT will notify when operation is complete.
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*
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* @return NfcStatus::OK on success and NfcStatus::FAILED on error.
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*/
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@callflow(next={"write", "coreInitialized", "prediscover", "controlGranted", "close"})
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powerCycle() generates (NfcStatus status);
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};
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