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Commit a4831394 authored by Andreas Huber's avatar Andreas Huber Committed by Iliyan Malchev
Browse files

nfc interfaces in the new style.



Change-Id: I989828d51a2ac1c79906d865b5bdab227457d2e6
Signed-off-by: default avatarIliyan Malchev <malchev@google.com>
parent 91ec59ba
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nfc/1.0/Android.mk

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LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE := android.hardware.nfc@1.0
LOCAL_MODULE_CLASS := SHARED_LIBRARIES

intermediates := $(local-generated-sources-dir)

GEN := \
  $(intermediates)/android/hardware/nfc/1.0/types.cpp \
  $(intermediates)/android/hardware/nfc/1.0/NfcAll.cpp \
  $(intermediates)/android/hardware/nfc/1.0/NfcClientCallbackAll.cpp \

$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)

$(GEN): PRIVATE_CUSTOM_TOOL = \
  hidl-gen -o $(PRIVATE_OUTPUT_DIR) android.hardware.nfc@1.0

$(GEN): $(LOCAL_PATH)/types.hal $(LOCAL_PATH)/INfc.hal $(LOCAL_PATH)/INfcClientCallback.hal
	$(transform-generated-source)

LOCAL_GENERATED_SOURCES += $(GEN)

LOCAL_EXPORT_C_INCLUDE_DIRS := $(intermediates)

LOCAL_SHARED_LIBRARIES := \
  libhwbinder \
  libutils \

include $(BUILD_SHARED_LIBRARY)

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);
};
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package android.hardware.nfc@1.0;

interface INfcClientCallback {
    /*
     * The callback passed in from the NFC stack that the HAL
     * can use to pass events back to the stack.
     */
    sendEvent(nfc_event_t event, nfc_status_t event_status);

    /*
     * The callback passed in from the NFC stack that the HAL
     * can use to pass incomming data to the stack.
     */
    sendData(nfc_data_t data);
};

nfc/1.0/types.hal

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package android.hardware.nfc@1.0;

enum nfc_event_t : uint32_t {
    HAL_NFC_OPEN_CPLT_EVT           = 0,
    HAL_NFC_CLOSE_CPLT_EVT          = 1,
    HAL_NFC_POST_INIT_CPLT_EVT      = 2,
    HAL_NFC_PRE_DISCOVER_CPLT_EVT   = 3,
    HAL_NFC_REQUEST_CONTROL_EVT     = 4,
    HAL_NFC_RELEASE_CONTROL_EVT     = 5,
    HAL_NFC_ERROR_EVT               = 6
};

enum nfc_status_t : uint32_t {
    HAL_NFC_STATUS_OK               = 0,
    HAL_NFC_STATUS_FAILED           = 1,
    HAL_NFC_STATUS_ERR_TRANSPORT    = 2,
    HAL_NFC_STATUS_ERR_CMD_TIMEOUT  = 3,
    HAL_NFC_STATUS_REFUSED          = 4
};

struct nfc_data_t {
    vec<uint8_t> data;
};