diff --git a/audio/effect/2.0/IAcousticEchoCancelerEffect.hal b/audio/effect/2.0/IAcousticEchoCancelerEffect.hal
index 9e2e0c3..b5f94a5 100644
--- a/audio/effect/2.0/IAcousticEchoCancelerEffect.hal
+++ b/audio/effect/2.0/IAcousticEchoCancelerEffect.hal
@@ -20,12 +20,12 @@
 import IEffect;
 
 interface IAcousticEchoCancelerEffect extends IEffect {
-    /*
+    /**
      * Sets echo delay value in milliseconds.
      */
     setEchoDelay(uint32_t echoDelayMs) generates (Result retval);
 
-    /*
+    /**
      * Gets echo delay value in milliseconds.
      */
     getEchoDelay() generates (Result retval, uint32_t echoDelayMs);
diff --git a/audio/effect/2.0/IAutomaticGainControlEffect.hal b/audio/effect/2.0/IAutomaticGainControlEffect.hal
index a02002d..b8ca7e3 100644
--- a/audio/effect/2.0/IAutomaticGainControlEffect.hal
+++ b/audio/effect/2.0/IAutomaticGainControlEffect.hal
@@ -20,32 +20,32 @@
 import IEffect;
 
 interface IAutomaticGainControlEffect extends IEffect {
-    /*
+    /**
      * Sets target level in millibels.
      */
     setTargetLevel(int16_t targetLevelMb) generates (Result retval);
 
-    /*
+    /**
      * Gets target level.
      */
     getTargetLevel() generates (Result retval, int16_t targetLevelMb);
 
-    /*
+    /**
      * Sets gain in the compression range in millibels.
      */
     setCompGain(int16_t compGainMb) generates (Result retval);
 
-    /*
+    /**
      * Gets gain in the compression range.
      */
     getCompGain() generates (Result retval, int16_t compGainMb);
 
-    /*
+    /**
      * Enables or disables limiter.
      */
     setLimiterEnabled(bool enabled) generates (Result retval);
 
-    /*
+    /**
      * Returns whether limiter is enabled.
      */
     isLimiterEnabled() generates (Result retval, bool enabled);
@@ -56,12 +56,12 @@
         bool limiterEnabled;
     };
 
-    /*
+    /**
      * Sets all properties at once.
      */
     setAllProperties(AllProperties properties) generates (Result retval);
 
-    /*
+    /**
      * Gets all properties at once.
      */
     getAllProperties() generates (Result retval, AllProperties properties);
diff --git a/audio/effect/2.0/IBassBoostEffect.hal b/audio/effect/2.0/IBassBoostEffect.hal
index bcf7b7d..db6a297 100644
--- a/audio/effect/2.0/IBassBoostEffect.hal
+++ b/audio/effect/2.0/IBassBoostEffect.hal
@@ -20,7 +20,7 @@
 import IEffect;
 
 interface IBassBoostEffect extends IEffect {
-    /*
+    /**
      * Returns whether setting bass boost strength is supported.
      */
     isStrengthSupported() generates (Result retval, bool strengthSupported);
@@ -30,7 +30,7 @@
         MAX = 1000
     };
 
-    /*
+    /**
      * Sets bass boost strength.
      *
      * @param strength strength of the effect. The valid range for strength
@@ -41,7 +41,7 @@
      */
     setStrength(uint16_t strength) generates (Result retval);
 
-    /*
+    /**
      * Gets virtualization strength.
      */
     getStrength() generates (Result retval, uint16_t strength);
diff --git a/audio/effect/2.0/IEffect.hal b/audio/effect/2.0/IEffect.hal
index d254e8c..332e2df 100644
--- a/audio/effect/2.0/IEffect.hal
+++ b/audio/effect/2.0/IEffect.hal
@@ -20,7 +20,7 @@
 import IEffectBufferProviderCallback;
 
 interface IEffect {
-    /*
+    /**
      * Initialize effect engine--all configurations return to default.
      *
      * @return retval operation completion status.
@@ -29,7 +29,7 @@
     @callflow(next={"*"})
     init() generates (Result retval);
 
-    /*
+    /**
      * Apply new audio parameters configurations for input and output buffers.
      * The provider callbacks may be empty, but in this case the buffer
      * must be provided in the EffectConfig structure.
@@ -45,7 +45,7 @@
             IEffectBufferProviderCallback outputBufferProvider)
             generates (Result retval);
 
-    /*
+    /**
      * Reset the effect engine. Keep configuration but resets state and buffer
      * content.
      *
@@ -54,7 +54,7 @@
     @callflow(next={"*"})
     reset() generates (Result retval);
 
-    /*
+    /**
      * Enable processing.
      *
      * @return retval operation completion status.
@@ -62,7 +62,7 @@
     @callflow(next={"prepareForProcessing"})
     enable() generates (Result retval);
 
-    /*
+    /**
      * Disable processing.
      *
      * @return retval operation completion status.
@@ -70,7 +70,7 @@
     @callflow(next={"close"})
     disable() generates (Result retval);
 
-    /*
+    /**
      * Set the rendering device the audio output path is connected to.  The
      * effect implementation must set EFFECT_FLAG_DEVICE_IND flag in its
      * descriptor to receive this command when the device changes.
@@ -84,7 +84,7 @@
     @callflow(next={"*"})
     setDevice(AudioDevice device) generates (Result retval);
 
-    /*
+    /**
      * Set and get volume. Used by audio framework to delegate volume control to
      * effect engine. The effect implementation must set EFFECT_FLAG_VOLUME_CTRL
      * flag in its descriptor to receive this command. The effect engine must
@@ -103,7 +103,7 @@
     setAndGetVolume(vec<uint32_t> volumes)
             generates (Result retval, vec<uint32_t> result);
 
-    /*
+    /**
      * Notify the effect of the volume change. The effect implementation must
      * set EFFECT_FLAG_VOLUME_IND flag in its descriptor to receive this
      * command.
@@ -116,7 +116,7 @@
     volumeChangeNotification(vec<uint32_t> volumes)
             generates (Result retval);
 
-    /*
+    /**
      * Set the audio mode. The effect implementation must set
      * EFFECT_FLAG_AUDIO_MODE_IND flag in its descriptor to receive this command
      * when the audio mode changes.
@@ -127,7 +127,7 @@
     @callflow(next={"*"})
     setAudioMode(AudioMode mode) generates (Result retval);
 
-    /*
+    /**
      * Apply new audio parameters configurations for input and output buffers of
      * reverse stream.  An example of reverse stream is the echo reference
      * supplied to an Acoustic Echo Canceler.
@@ -143,7 +143,7 @@
             IEffectBufferProviderCallback outputBufferProvider)
             generates (Result retval);
 
-    /*
+    /**
      * Set the capture device the audio input path is connected to. The effect
      * implementation must set EFFECT_FLAG_DEVICE_IND flag in its descriptor to
      * receive this command when the device changes.
@@ -157,7 +157,7 @@
     @callflow(next={"*"})
     setInputDevice(AudioDevice device) generates (Result retval);
 
-    /*
+    /**
      * Read audio parameters configurations for input and output buffers.
      *
      * @return retval operation completion status.
@@ -166,7 +166,7 @@
     @callflow(next={"*"})
     getConfig() generates (Result retval, EffectConfig config);
 
-    /*
+    /**
      * Read audio parameters configurations for input and output buffers of
      * reverse stream.
      *
@@ -176,7 +176,7 @@
     @callflow(next={"*"})
     getConfigReverse() generates (Result retval, EffectConfig config);
 
-    /*
+    /**
      * Queries for supported combinations of main and auxiliary channels
      * (e.g. for a multi-microphone noise suppressor).
      *
@@ -190,7 +190,7 @@
     getSupportedAuxChannelsConfigs(uint32_t maxConfigs)
             generates (Result retval, vec<EffectAuxChannelsConfig> result);
 
-    /*
+    /**
      * Retrieves the current configuration of main and auxiliary channels.
      *
      * @return retval absence of the feature support is indicated using
@@ -201,7 +201,7 @@
     getAuxChannelsConfig()
             generates (Result retval, EffectAuxChannelsConfig result);
 
-    /*
+    /**
      * Sets the current configuration of main and auxiliary channels.
      *
      * @return retval operation completion status; absence of the feature
@@ -211,7 +211,7 @@
     setAuxChannelsConfig(EffectAuxChannelsConfig config)
             generates (Result retval);
 
-    /*
+    /**
      * Set the audio source the capture path is configured for (Camcorder, voice
      * recognition...).
      *
@@ -224,7 +224,7 @@
     @callflow(next={"*"})
     setAudioSource(AudioSource source) generates (Result retval);
 
-    /*
+    /**
      * This command indicates if the playback thread the effect is attached to
      * is offloaded or not, and updates the I/O handle of the playback thread
      * the effect is attached to.
@@ -235,7 +235,7 @@
     @callflow(next={"*"})
     offload(EffectOffloadParameter param) generates (Result retval);
 
-    /*
+    /**
      * Returns the effect descriptor.
      *
      * @return retval operation completion status.
@@ -244,7 +244,7 @@
     @callflow(next={"*"})
     getDescriptor() generates (Result retval, EffectDescriptor descriptor);
 
-    /*
+    /**
      * Set up required transports for passing audio buffers to the effect.
      *
      * The transport consists of shared memory and a message queue for reporting
@@ -270,7 +270,7 @@
     @callflow(next={"setProcessBuffers"})
     prepareForProcessing() generates (Result retval, fmq_sync<Result> statusMQ);
 
-    /*
+    /**
      * Set up input and output buffers for processing audio data. The effect
      * may modify both the input and the output buffer during the operation.
      * Buffers may be set multiple times during effect lifetime.
@@ -289,7 +289,7 @@
     setProcessBuffers(AudioBuffer inBuffer, AudioBuffer outBuffer) generates (
             Result retval);
 
-    /*
+    /**
      * Execute a vendor specific command on the effect. The command code
      * and data, as well as result data are not interpreted by Android
      * Framework and are passed as-is between the application and the effect.
@@ -310,7 +310,7 @@
     command(uint32_t commandId, vec<uint8_t> data, uint32_t resultMaxSize)
             generates (int32_t status, vec<uint8_t> result);
 
-    /*
+    /**
      * Set a vendor-specific parameter and apply it immediately. The parameter
      * code and data are not interpreted by Android Framework and are passed
      * as-is between the application and the effect.
@@ -331,7 +331,7 @@
     setParameter(vec<uint8_t> parameter, vec<uint8_t> value)
             generates (Result retval);
 
-    /*
+    /**
      * Get a vendor-specific parameter value. The parameter code and returned
      * data are not interpreted by Android Framework and are passed as-is
      * between the application and the effect.
@@ -353,7 +353,7 @@
     getParameter(vec<uint8_t> parameter, uint32_t valueMaxSize)
             generates (Result retval, vec<uint8_t> value);
 
-    /*
+    /**
      * Get supported configs for a vendor-specific feature. The configs returned
      * are not interpreted by Android Framework and are passed as-is between the
      * application and the effect.
@@ -384,7 +384,7 @@
                     uint32_t configsCount,
                     vec<uint8_t> configsData);
 
-    /*
+    /**
      * Get the current config for a vendor-specific feature. The config returned
      * is not interpreted by Android Framework and is passed as-is between the
      * application and the effect.
@@ -406,7 +406,7 @@
     getCurrentConfigForFeature(uint32_t featureId, uint32_t configSize)
             generates (Result retval, vec<uint8_t> configData);
 
-    /*
+    /**
      * Set the current config for a vendor-specific feature. The config data
      * is not interpreted by Android Framework and is passed as-is between the
      * application and the effect.
@@ -426,7 +426,7 @@
     setCurrentConfigForFeature(uint32_t featureId, vec<uint8_t> configData)
             generates (Result retval);
 
-    /*
+    /**
      * Called by the framework to deinitialize the effect and free up
      * all the currently allocated resources. It is recommended to close
      * the effect on the client side as soon as it is becomes unused.
diff --git a/audio/effect/2.0/IEffectBufferProviderCallback.hal b/audio/effect/2.0/IEffectBufferProviderCallback.hal
index 53f4d6e..6ab33c3 100644
--- a/audio/effect/2.0/IEffectBufferProviderCallback.hal
+++ b/audio/effect/2.0/IEffectBufferProviderCallback.hal
@@ -16,12 +16,12 @@
 
 package android.hardware.audio.effect@2.0;
 
-/*
+/**
  * This callback interface contains functions that can be used by the effect
  * engine 'process' function to exchange input and output audio buffers.
  */
 interface IEffectBufferProviderCallback {
-    /*
+    /**
      * Called to retrieve a buffer where data should read from by 'process'
      * function.
      *
@@ -29,7 +29,7 @@
      */
     getBuffer() generates (AudioBuffer buffer);
 
-    /*
+    /**
      * Called to provide a buffer with the data written by 'process' function.
      *
      * @param buffer audio buffer for processing
diff --git a/audio/effect/2.0/IEffectsFactory.hal b/audio/effect/2.0/IEffectsFactory.hal
index c82b4a2..3d300ec 100644
--- a/audio/effect/2.0/IEffectsFactory.hal
+++ b/audio/effect/2.0/IEffectsFactory.hal
@@ -20,7 +20,7 @@
 import IEffect;
 
 interface IEffectsFactory {
-    /*
+    /**
      * Returns descriptors of different effects in all loaded libraries.
      *
      * @return retval operation completion status.
@@ -28,7 +28,7 @@
      */
     getAllDescriptors() generates(Result retval, vec<EffectDescriptor> result);
 
-    /*
+    /**
      * Returns a descriptor of a particular effect.
      *
      * @return retval operation completion status.
@@ -36,7 +36,7 @@
      */
     getDescriptor(Uuid uid) generates(Result retval, EffectDescriptor result);
 
-    /*
+    /**
      * Creates an effect engine of the specified type.  To release the effect
      * engine, it is necessary to release references to the returned effect
      * object.
@@ -56,7 +56,7 @@
     createEffect(Uuid uid, AudioSession session, AudioIoHandle ioHandle)
         generates (Result retval, IEffect result, uint64_t effectId);
 
-    /*
+    /**
      * Dumps information about effects into the provided file descriptor.
      * This is used for the dumpsys facility.
      *
diff --git a/audio/effect/2.0/IEnvironmentalReverbEffect.hal b/audio/effect/2.0/IEnvironmentalReverbEffect.hal
index d9b1ee6..dca89f9 100644
--- a/audio/effect/2.0/IEnvironmentalReverbEffect.hal
+++ b/audio/effect/2.0/IEnvironmentalReverbEffect.hal
@@ -20,12 +20,12 @@
 import IEffect;
 
 interface IEnvironmentalReverbEffect extends IEffect {
-    /*
+    /**
      * Sets whether the effect should be bypassed.
      */
     setBypass(bool bypass) generates (Result retval);
 
-    /*
+    /**
      * Gets whether the effect should be bypassed.
      */
     getBypass() generates (Result retval, bool bypass);
@@ -53,102 +53,102 @@
         DENSITY_MAX = 1000
     };
 
-    /*
+    /**
      * Sets the room level.
      */
     setRoomLevel(int16_t roomLevel) generates (Result retval);
 
-    /*
+    /**
      * Gets the room level.
      */
     getRoomLevel() generates (Result retval, int16_t roomLevel);
 
-    /*
+    /**
      * Sets the room high frequences level.
      */
     setRoomHfLevel(int16_t roomHfLevel) generates (Result retval);
 
-    /*
+    /**
      * Gets the room high frequences level.
      */
     getRoomHfLevel() generates (Result retval, int16_t roomHfLevel);
 
-    /*
+    /**
      * Sets the room decay time.
      */
     setDecayTime(uint32_t decayTime) generates (Result retval);
 
-    /*
+    /**
      * Gets the room decay time.
      */
     getDecayTime() generates (Result retval, uint32_t decayTime);
 
-    /*
+    /**
      * Sets the ratio of high frequences decay.
      */
     setDecayHfRatio(int16_t decayHfRatio) generates (Result retval);
 
-    /*
+    /**
      * Gets the ratio of high frequences decay.
      */
     getDecayHfRatio() generates (Result retval, int16_t decayHfRatio);
 
-    /*
+    /**
      * Sets the level of reflections in the room.
      */
     setReflectionsLevel(int16_t reflectionsLevel) generates (Result retval);
 
-    /*
+    /**
      * Gets the level of reflections in the room.
      */
     getReflectionsLevel() generates (Result retval, int16_t reflectionsLevel);
 
-    /*
+    /**
      * Sets the reflections delay in the room.
      */
     setReflectionsDelay(uint32_t reflectionsDelay) generates (Result retval);
 
-    /*
+    /**
      * Gets the reflections delay in the room.
      */
     getReflectionsDelay() generates (Result retval, uint32_t reflectionsDelay);
 
-    /*
+    /**
      * Sets the reverb level of the room.
      */
     setReverbLevel(int16_t reverbLevel) generates (Result retval);
 
-    /*
+    /**
      * Gets the reverb level of the room.
      */
     getReverbLevel() generates (Result retval, int16_t reverbLevel);
 
-    /*
+    /**
      * Sets the reverb delay of the room.
      */
     setReverbDelay(uint32_t reverDelay) generates (Result retval);
 
-    /*
+    /**
      * Gets the reverb delay of the room.
      */
     getReverbDelay() generates (Result retval, uint32_t reverbDelay);
 
-    /*
+    /**
      * Sets room diffusion.
      */
     setDiffusion(int16_t diffusion) generates (Result retval);
 
-    /*
+    /**
      * Gets room diffusion.
      */
     getDiffusion() generates (Result retval, int16_t diffusion);
 
-    /*
+    /**
      * Sets room wall density.
      */
     setDensity(int16_t density) generates (Result retval);
 
-    /*
+    /**
      * Gets room wall density.
      */
     getDensity() generates (Result retval, int16_t density);
@@ -166,12 +166,12 @@
         int16_t  density;           // in permilles,    range 0 to 1000
     };
 
-    /*
+    /**
      * Sets all properties at once.
      */
     setAllProperties(AllProperties properties) generates (Result retval);
 
-    /*
+    /**
      * Gets all properties at once.
      */
     getAllProperties() generates (Result retval, AllProperties properties);
diff --git a/audio/effect/2.0/IEqualizerEffect.hal b/audio/effect/2.0/IEqualizerEffect.hal
index b8fa177..1528e0d 100644
--- a/audio/effect/2.0/IEqualizerEffect.hal
+++ b/audio/effect/2.0/IEqualizerEffect.hal
@@ -20,58 +20,58 @@
 import IEffect;
 
 interface IEqualizerEffect extends IEffect {
-    /*
+    /**
      * Gets the number of frequency bands that the equalizer supports.
      */
     getNumBands() generates (Result retval, uint16_t numBands);
 
-    /*
+    /**
      * Returns the minimum and maximum band levels supported.
      */
     getLevelRange()
             generates (Result retval, int16_t minLevel, int16_t maxLevel);
 
-    /*
+    /**
      * Sets the gain for the given equalizer band.
      */
     setBandLevel(uint16_t band, int16_t level) generates (Result retval);
 
-    /*
+    /**
      * Gets the gain for the given equalizer band.
      */
     getBandLevel(uint16_t band) generates (Result retval, int16_t level);
 
-    /*
+    /**
      * Gets the center frequency of the given band, in milliHertz.
      */
     getBandCenterFrequency(uint16_t band)
             generates (Result retval, uint32_t centerFreqmHz);
 
-    /*
+    /**
      * Gets the frequency range of the given frequency band, in milliHertz.
      */
     getBandFrequencyRange(uint16_t band)
             generates (Result retval, uint32_t minFreqmHz, uint32_t maxFreqmHz);
 
-    /*
+    /**
      * Gets the band that has the most effect on the given frequency
      * in milliHertz.
      */
     getBandForFrequency(uint32_t freqmHz)
             generates (Result retval, uint16_t band);
 
-    /*
+    /**
      * Gets the names of all presets the equalizer supports.
      */
     getPresetNames() generates (Result retval, vec<string> names);
 
-    /*
+    /**
      * Sets the current preset using the index of the preset in the names
      * vector returned via 'getPresetNames'.
      */
     setCurrentPreset(uint16_t preset) generates (Result retval);
 
-    /*
+    /**
      * Gets the current preset.
      */
     getCurrentPreset() generates (Result retval, uint16_t preset);
@@ -81,12 +81,12 @@
         vec<int16_t> bandLevels;
     };
 
-    /*
+    /**
      * Sets all properties at once.
      */
     setAllProperties(AllProperties properties) generates (Result retval);
 
-    /*
+    /**
      * Gets all properties at once.
      */
     getAllProperties() generates (Result retval, AllProperties properties);
diff --git a/audio/effect/2.0/ILoudnessEnhancerEffect.hal b/audio/effect/2.0/ILoudnessEnhancerEffect.hal
index 3e1ee4e..adeb1c8 100644
--- a/audio/effect/2.0/ILoudnessEnhancerEffect.hal
+++ b/audio/effect/2.0/ILoudnessEnhancerEffect.hal
@@ -20,12 +20,12 @@
 import IEffect;
 
 interface ILoudnessEnhancerEffect extends IEffect {
-    /*
+    /**
      * Sets target gain expressed in millibels.
      */
     setTargetGain(int32_t targetGainMb) generates (Result retval);
 
-    /*
+    /**
      * Gets target gain expressed in millibels.
      */
     getTargetGain() generates (Result retval, int32_t targetGainMb);
diff --git a/audio/effect/2.0/INoiseSuppressionEffect.hal b/audio/effect/2.0/INoiseSuppressionEffect.hal
index ae2bfb5..6617a1e 100644
--- a/audio/effect/2.0/INoiseSuppressionEffect.hal
+++ b/audio/effect/2.0/INoiseSuppressionEffect.hal
@@ -26,12 +26,12 @@
         HIGH
     };
 
-    /*
+    /**
      * Sets suppression level.
      */
     setSuppressionLevel(Level level) generates (Result retval);
 
-    /*
+    /**
      * Gets suppression level.
      */
     getSuppressionLevel() generates (Result retval, Level level);
@@ -41,12 +41,12 @@
         MULTI_CHANNEL
     };
 
-    /*
+    /**
      * Set suppression type.
      */
     setSuppressionType(Type type) generates (Result retval);
 
-    /*
+    /**
      * Get suppression type.
      */
     getSuppressionType() generates (Result retval, Type type);
@@ -56,12 +56,12 @@
         Type type;
     };
 
-    /*
+    /**
      * Sets all properties at once.
      */
     setAllProperties(AllProperties properties) generates (Result retval);
 
-    /*
+    /**
      * Gets all properties at once.
      */
     getAllProperties() generates (Result retval, AllProperties properties);
diff --git a/audio/effect/2.0/IVirtualizerEffect.hal b/audio/effect/2.0/IVirtualizerEffect.hal
index 2b7116c..49b49a0 100644
--- a/audio/effect/2.0/IVirtualizerEffect.hal
+++ b/audio/effect/2.0/IVirtualizerEffect.hal
@@ -20,7 +20,7 @@
 import IEffect;
 
 interface IVirtualizerEffect extends IEffect {
-    /*
+    /**
      * Returns whether setting virtualization strength is supported.
      */
     isStrengthSupported() generates (bool strengthSupported);
@@ -30,7 +30,7 @@
         MAX = 1000
     };
 
-    /*
+    /**
      * Sets virtualization strength.
      *
      * @param strength strength of the effect. The valid range for strength
@@ -41,7 +41,7 @@
      */
     setStrength(uint16_t strength) generates (Result retval);
 
-    /*
+    /**
      * Gets virtualization strength.
      */
     getStrength() generates (Result retval, uint16_t strength);
@@ -56,19 +56,19 @@
         int16_t elevation; // 0 is the horizontal plane
                            // +90 is above the listener, -90 is below
     };
-    /*
+    /**
      * Retrieves virtual speaker angles for the given channel mask on the
      * specified device.
      */
     getVirtualSpeakerAngles(AudioChannelMask mask, AudioDevice device)
             generates (Result retval, vec<SpeakerAngle> speakerAngles);
 
-    /*
+    /**
      * Forces the virtualizer effect for the given output device.
      */
     forceVirtualizationMode(AudioDevice device) generates (Result retval);
 
-    /*
+    /**
      * Returns audio device reflecting the current virtualization mode,
      * AUDIO_DEVICE_NONE when not virtualizing.
      */
diff --git a/audio/effect/2.0/IVisualizerEffect.hal b/audio/effect/2.0/IVisualizerEffect.hal
index 79dc9ee..fd3edbd 100644
--- a/audio/effect/2.0/IVisualizerEffect.hal
+++ b/audio/effect/2.0/IVisualizerEffect.hal
@@ -25,12 +25,12 @@
         MIN = 128    // minimum capture size in samples
     };
 
-    /*
+    /**
      * Sets the number PCM samples in the capture.
      */
     setCaptureSize(uint16_t captureSize) generates (Result retval);
 
-    /*
+    /**
      * Gets the number PCM samples in the capture.
      */
     getCaptureSize() generates (Result retval, uint16_t captureSize);
@@ -42,22 +42,22 @@
         AS_PLAYED = 1
     };
 
-    /*
+    /**
      * Specifies the way the captured data is scaled.
      */
     setScalingMode(ScalingMode scalingMode) generates (Result retval);
 
-    /*
+    /**
      * Retrieves the way the captured data is scaled.
      */
     getScalingMode() generates (Result retval, ScalingMode scalingMode);
 
-    /*
+    /**
      * Informs the visualizer about the downstream latency.
      */
     setLatency(uint32_t latencyMs) generates (Result retval);
 
-    /*
+    /**
      * Gets the downstream latency.
      */
     getLatency() generates (Result retval, uint32_t latencyMs);
@@ -69,19 +69,19 @@
         PEAK_RMS = 0x1
     };
 
-    /*
+    /**
      * Specifies which measurements are to be made.
      */
     setMeasurementMode(MeasurementMode measurementMode)
             generates (Result retval);
 
-    /*
+    /**
      * Retrieves which measurements are to be made.
      */
     getMeasurementMode() generates (
             Result retval, MeasurementMode measurementMode);
 
-    /*
+    /**
      * Retrieves the latest PCM snapshot captured by the visualizer engine.  The
      * number of samples to capture is specified by 'setCaptureSize' parameter.
      *
@@ -99,7 +99,7 @@
             } peakAndRms;
         } value;
     };
-    /*
+    /**
      * Retrieves the lastest measurements. The measurements to be made
      * are specified by 'setMeasurementMode' parameter.
      *
diff --git a/audio/effect/2.0/types.hal b/audio/effect/2.0/types.hal
index 0626ec5..2c5e4ef 100644
--- a/audio/effect/2.0/types.hal
+++ b/audio/effect/2.0/types.hal
@@ -27,7 +27,7 @@
     RESULT_TOO_BIG
 };
 
-/*
+/**
  * Effect engine capabilities/requirements flags.
  *
  * Definitions for flags field of effect descriptor.
@@ -195,7 +195,7 @@
     NO_PROCESS = 1 << NO_PROCESS_SHIFT
 };
 
-/*
+/**
  * The effect descriptor contains necessary information to facilitate the
  * enumeration of the effect engines present in a library.
  */
@@ -212,7 +212,7 @@
     uint8_t[64] implementor;  // human readable effect implementor name
 };
 
-/*
+/**
  * A buffer is a chunk of audio data for processing.  Multi-channel audio is
  * always interleaved. The channel order is from LSB to MSB with regard to the
  * channel mask definition in audio.h, audio_channel_mask_t, e.g.:
@@ -235,7 +235,7 @@
     ACCESS_ACCUMULATE
 };
 
-/*
+/**
  * Determines what fields of EffectBufferConfig need to be considered.
  */
 @export(name="", value_prefix="EFFECT_CONFIG_")
@@ -248,7 +248,7 @@
     ALL = BUFFER | SMP_RATE | CHANNELS | FORMAT | ACC_MODE
 };
 
-/*
+/**
  * The buffer config structure specifies the input or output audio format
  * to be used by the effect engine.
  */
@@ -285,7 +285,7 @@
                              // the effect is attached to
 };
 
-/*
+/**
  * The message queue flags used to synchronize reads and writes from
  * the status message queue used by effects.
  */