platform_hardware_interfaces/nfc/1.0/INfc.hal

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package android.hardware.nfc@1.0;
import INfcClientCallback;
interface INfc {
/*
* Opens the NFC controller device and performs initialization.
* This may include patch download and other vendor-specific initialization.
*
* If open completes successfully, the controller should be ready to perform
* NCI initialization - ie accept CORE_RESET and subsequent commands through
* the write() call.
*
* If open() returns 0, the NCI stack will wait for a HAL_NFC_OPEN_CPLT_EVT
* before continuing.
*
* If open() returns any other value, the NCI stack will stop.
*
*/
open(INfcClientCallback clientCallback) generates (int32_t retval);
/*
* Performs an NCI write.
*
* This method may queue writes and return immediately. The only
* requirement is that the writes are executed in order.
*/
write(nfc_data_t data) generates (int32_t retval);
/*
* core_initialized() is called after the CORE_INIT_RSP is received from the NFCC.
* At this time, the HAL can do any chip-specific configuration.
*
* If core_initialized() returns 0, the NCI stack will wait for a HAL_NFC_POST_INIT_CPLT_EVT
* before continuing.
*
* If core_initialized() returns any other value, the NCI stack will continue
* immediately.
*/
core_initialized(vec<uint8_t> data) generates (int32_t retval);
/*
* pre_discover is called every time before starting RF discovery.
* It is a good place to do vendor-specific configuration that must be
* performed every time RF discovery is about to be started.
*
* If pre_discover() returns 0, the NCI stack will wait for a HAL_NFC_PRE_DISCOVER_CPLT_EVT
* before continuing.
*
* If pre_discover() returns any other value, the NCI stack will start
* RF discovery immediately.
*/
pre_discover() generates (int32_t retval);
/*
* Close the NFC controller. Should free all resources.
*/
close() generates (int32_t retval);
/*
* Grant HAL the exclusive control to send NCI commands.
* Called in response to HAL_REQUEST_CONTROL_EVT.
* Must only be called when there are no NCI commands pending.
* HAL_RELEASE_CONTROL_EVT will notify when HAL no longer needs exclusive control.
*/
control_granted() generates (int32_t retval);
/*
* Restart controller by power cyle;
* HAL_OPEN_CPLT_EVT will notify when operation is complete.
*/
power_cycle() generates (int32_t retval);
};