Implement default functions for direct channel

Implements default functions for a Sensors 2.0 HAL that does not
support direct channel operation.

Although Sensors 2.0 supports direct channel operation, it is not a
requirement unless a device supports High Fidelity Sensors. A direct
channel implementation is vendor-specific, and therefore, the default
implementation does not provide a reference implementation.

A default implementation is able to be found in Sensors 1.0 since
direct channel operation has not changed between Sensors 1.0 and 2.0.

Bug: 111070257
Test: Builds
Change-Id: I1c4ef0cd9d4bd4b7ae3212358f9493c28c2798f4

1 files changed, 7 insertions, 9 deletions

diff --git a/sensors/2.0/default/Sensors.cpp b/sensors/2.0/default/Sensors.cpp
index ea6e000286..9fea647989 100644
--- a/sensors/2.0/default/Sensors.cpp
+++ b/sensors/2.0/default/Sensors.cpp
@@ -103,21 +103,19 @@ Return<Result> Sensors::injectSensorData(const Event& /* event */) {
 }
 
 Return<void> Sensors::registerDirectChannel(const SharedMemInfo& /* mem */,
-                                            registerDirectChannel_cb /* _hidl_cb */) {
-    // TODO implement
-    return Void();
+                                            registerDirectChannel_cb _hidl_cb) {
+    _hidl_cb(Result::INVALID_OPERATION, 0 /* channelHandle */);
+    return Return<void>();
 }
 
 Return<Result> Sensors::unregisterDirectChannel(int32_t /* channelHandle */) {
-    // TODO implement
-    return Result{};
+    return Result::INVALID_OPERATION;
 }
 
 Return<void> Sensors::configDirectReport(int32_t /* sensorHandle */, int32_t /* channelHandle */,
-                                         RateLevel /* rate */,
-                                         configDirectReport_cb /* _hidl_cb */) {
-    // TODO implement
-    return Void();
+                                         RateLevel /* rate */, configDirectReport_cb _hidl_cb) {
+    _hidl_cb(Result::INVALID_OPERATION, 0 /* reportToken */);
+    return Return<void>();
 }
 
 void Sensors::deleteEventFlag() {