diff --git a/hardware.c b/hardware.c
index 40ae1d1..6e72ce9 100644
--- a/hardware.c
+++ b/hardware.c
@@ -24,6 +24,7 @@
 #include <errno.h>
 #include <limits.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 
 #define LOG_TAG "HAL"
@@ -148,6 +149,25 @@
 }
 
 /*
+ * If path is in in_path.
+ */
+static bool path_in_path(const char *path, const char *in_path) {
+    char real_path[PATH_MAX];
+    if (realpath(path, real_path) == NULL) return false;
+
+    char real_in_path[PATH_MAX];
+    if (realpath(in_path, real_in_path) == NULL) return false;
+
+    const size_t real_in_path_len = strlen(real_in_path);
+    if (strncmp(real_path, real_in_path, real_in_path_len) != 0) {
+        return false;
+    }
+
+    return strlen(real_path) > real_in_path_len &&
+        real_path[real_in_path_len] == '/';
+}
+
+/*
  * Check if a HAL with given name and subname exists, if so return 0, otherwise
  * otherwise return negative.  On success path will contain the path to the HAL.
  */
@@ -156,18 +176,18 @@
 {
     snprintf(path, path_len, "%s/%s.%s.so",
              HAL_LIBRARY_PATH3, name, subname);
-    if (access(path, R_OK) == 0)
+    if (path_in_path(path, HAL_LIBRARY_PATH3) && access(path, R_OK) == 0)
         return 0;
 
     snprintf(path, path_len, "%s/%s.%s.so",
              HAL_LIBRARY_PATH2, name, subname);
-    if (access(path, R_OK) == 0)
+    if (path_in_path(path, HAL_LIBRARY_PATH2) && access(path, R_OK) == 0)
         return 0;
 
 #ifndef __ANDROID_VNDK__
     snprintf(path, path_len, "%s/%s.%s.so",
              HAL_LIBRARY_PATH1, name, subname);
-    if (access(path, R_OK) == 0)
+    if (path_in_path(path, HAL_LIBRARY_PATH1) && access(path, R_OK) == 0)
         return 0;
 #endif
 
diff --git a/include/hardware/audio.h b/include/hardware/audio.h
index 10a8789..feebd23 100644
--- a/include/hardware/audio.h
+++ b/include/hardware/audio.h
@@ -550,6 +550,36 @@
                                   size_t *mic_count);
 
     /**
+     * Called by the framework to instruct the HAL to optimize the capture stream in the
+     * specified direction.
+     *
+     * \param[in] stream    the stream object.
+     * \param[in] direction The direction constant (from audio-base.h)
+     *   MIC_DIRECTION_UNSPECIFIED  Don't do any directionality processing of the
+     *      activated microphone(s).
+     *   MIC_DIRECTION_FRONT        Optimize capture for audio coming from the screen-side
+     *      of the device.
+     *   MIC_DIRECTION_BACK         Optimize capture for audio coming from the side of the
+     *      device opposite the screen.
+     *   MIC_DIRECTION_EXTERNAL     Optimize capture for audio coming from an off-device
+     *      microphone.
+     * \return OK if the call is successful, an error code otherwise.
+     */
+    int (*set_microphone_direction)(const struct audio_stream_in *stream,
+                                    audio_microphone_direction_t direction);
+
+    /**
+     * Called by the framework to specify to the HAL the desired zoom factor for the selected
+     * microphone(s).
+     *
+     * \param[in] stream    the stream object.
+     * \param[in] zoom      the zoom factor.
+     * \return OK if the call is successful, an error code otherwise.
+     */
+    int (*set_microphone_field_dimension)(const struct audio_stream_in *stream,
+                                          float zoom);
+
+    /**
      * Called when the metadata of the stream's sink has been changed.
      * @param sink_metadata Description of the audio that is recorded by the clients.
      */
diff --git a/include/hardware/camera3.h b/include/hardware/camera3.h
index c3ea0aa..7fb86df 100644
--- a/include/hardware/camera3.h
+++ b/include/hardware/camera3.h
@@ -21,7 +21,7 @@
 #include "camera_common.h"
 
 /**
- * Camera device HAL 3.5[ CAMERA_DEVICE_API_VERSION_3_5 ]
+ * Camera device HAL 3.6[ CAMERA_DEVICE_API_VERSION_3_6 ]
  *
  * This is the current recommended version of the camera device HAL.
  *
@@ -29,7 +29,7 @@
  * android.hardware.camera2 API as LIMITED or above hardware level.
  *
  * Camera devices that support this version of the HAL must return
- * CAMERA_DEVICE_API_VERSION_3_5 in camera_device_t.common.version and in
+ * CAMERA_DEVICE_API_VERSION_3_6 in camera_device_t.common.version and in
  * camera_info_t.device_version (from camera_module_t.get_camera_info).
  *
  * CAMERA_DEVICE_API_VERSION_3_3 and above:
@@ -183,6 +183,25 @@
  *     for a logical multi camera, the application has the option to specify individual
  *     settings for a particular physical device.
  *
+ * 3.6: Minor revisions to support HAL buffer management APIs:
+ *
+ *   - Add ANDROID_INFO_SUPPORTED_BUFFER_MANAGEMENT_VERSION static metadata, which allows HAL to
+ *     opt in to the new buffer management APIs described below.
+ *
+ *   - Add request_stream_buffers() and return_stream_buffers() to camera3_callback_ops_t for HAL to
+ *     request and return output buffers from camera service.
+ *
+ *   - Add signal_stream_flush() to camera3_device_ops_t for camera service to notify HAL an
+ *     upcoming configure_streams() call requires HAL to return buffers of certain streams.
+ *
+ *   - Add CAMERA3_JPEG_APP_SEGMENTS_BLOB_ID to support BLOB with only JPEG apps
+ *     segments and thumbnail (without main image bitstream). Camera framework
+ *     uses such stream togerther with a HAL YUV_420_888/IMPLEMENTATION_DEFINED
+ *     stream to encode HEIC (ISO/IEC 23008-12) image.
+ *
+ *   - Add is_reconfiguration_required() to camera3_device_ops_t to enable HAL to skip or
+ *     trigger stream reconfiguration depending on new session parameter values.
+ *
  */
 
 /**
@@ -1313,7 +1332,7 @@
  *      To avoid excessive amount of noise reduction and insufficient amount of edge enhancement
  *      being applied to the input buffer, the application can hint the HAL  how much effective
  *      exposure time improvement has been done by the application, then the HAL can adjust the
- *      noise reduction and edge enhancement paramters to get best reprocessed image quality.
+ *      noise reduction and edge enhancement parameters to get best reprocessed image quality.
  *      Below tag can be used for this purpose:
  *          - android.reprocess.effectiveExposureFactor
  *      The value would be exposure time increase factor applied to the original output image,
@@ -1941,21 +1960,25 @@
 /**
  * camera3_jpeg_blob:
  *
- * Transport header for compressed JPEG buffers in output streams.
+ * Transport header for compressed JPEG or JPEG_APP_SEGMENTS buffers in output streams.
  *
- * To capture JPEG images, a stream is created using the pixel format
+ * To capture JPEG or JPEG_APP_SEGMENTS images, a stream is created using the pixel format
  * HAL_PIXEL_FORMAT_BLOB. The buffer size for the stream is calculated by the
- * framework, based on the static metadata field android.jpeg.maxSize. Since
- * compressed JPEG images are of variable size, the HAL needs to include the
- * final size of the compressed image using this structure inside the output
- * stream buffer. The JPEG blob ID field must be set to CAMERA3_JPEG_BLOB_ID.
+ * framework, based on the static metadata field android.jpeg.maxSize for JPEG,
+ * and android.jpeg.maxAppsSegments for JPEG_APP_SEGMENTS.
  *
- * Transport header should be at the end of the JPEG output stream buffer. That
+ * Since compressed JPEG/JPEG_APP_SEGMENTS images are of variable size, the HAL needs to
+ * include the final size of the image using this structure inside the output
+ * stream buffer. The JPEG blob ID field must be set to CAMERA3_JPEG_BLOB_ID for
+ * JPEG and CAMERA3_JPEG_APP_SEGMENTS_BLOB_ID for APP segments.
+ *
+ * Transport header should be at the end of the output stream buffer. That
  * means the jpeg_blob_id must start at byte[buffer_size -
  * sizeof(camera3_jpeg_blob)], where the buffer_size is the size of gralloc buffer.
- * Any HAL using this transport header must account for it in android.jpeg.maxSize
- * The JPEG data itself starts at the beginning of the buffer and should be
- * jpeg_size bytes long.
+ * The blob data itself starts at the beginning of the buffer and should be
+ * jpeg_size bytes long. HAL using this transport header for JPEG must account for
+ * it in android.jpeg.maxSize. For JPEG APP segments, camera framework makes
+ * sure that the output stream buffer is large enough for the transport header.
  */
 typedef struct camera3_jpeg_blob {
     uint16_t jpeg_blob_id;
@@ -1963,7 +1986,8 @@
 } camera3_jpeg_blob_t;
 
 enum {
-    CAMERA3_JPEG_BLOB_ID = 0x00FF
+    CAMERA3_JPEG_BLOB_ID = 0x00FF,
+    CAMERA3_JPEG_APP_SEGMENTS_BLOB_ID = 0x0100,
 };
 
 /**********************************************************************
@@ -2029,6 +2053,14 @@
      * available. Subsequent requests are unaffected, and the device remains
      * operational.  The frame_number field specifies the request for which
      * result metadata won't be available.
+     *
+     * >= CAMERA_DEVICE_API_VERSION_3_6:
+     *
+     * In case the result metadata is absent for a logical camera device, then the
+     * error_stream pointer must be set to NULL.
+     * If the result metadata cannot be produced for a physical camera device, then
+     * error_stream must contain a pointer to a respective stream associated with
+     * that physical device.
      */
     CAMERA3_MSG_ERROR_RESULT = 3,
 
@@ -2126,6 +2158,153 @@
 
 } camera3_notify_msg_t;
 
+
+/**********************************************************************
+ *
+ * Types definition for request_stream_buffers() callback.
+ *
+ */
+
+/**
+ * camera3_buffer_request_status_t:
+ *
+ * The overall buffer request status returned by request_stream_buffers()
+ */
+typedef enum camera3_buffer_request_status {
+    /**
+     * request_stream_buffers() call succeeded and all requested buffers are
+     * returned.
+     */
+    CAMERA3_BUF_REQ_OK = 0,
+
+    /**
+     * request_stream_buffers() call failed for some streams.
+     * Check per stream status for each returned camera3_stream_buffer_ret_t.
+     */
+    CAMERA3_BUF_REQ_FAILED_PARTIAL = 1,
+
+    /**
+     * request_stream_buffers() call failed for all streams and no buffers are
+     * returned at all. Camera service is about to or is performing
+     * configure_streams() call. HAL must wait until next configure_streams()
+     * call is finished before requesting buffers again.
+     */
+    CAMERA3_BUF_REQ_FAILED_CONFIGURING = 2,
+
+    /**
+     * request_stream_buffers() call failed for all streams and no buffers are
+     * returned at all. Failure due to bad camera3_buffer_request input, eg:
+     * unknown stream or repeated stream in the list of buffer requests.
+     */
+    CAMERA3_BUF_REQ_FAILED_ILLEGAL_ARGUMENTS = 3,
+
+    /**
+     * request_stream_buffers() call failed for all streams and no buffers are
+     * returned at all. This can happen for unknown reasons or a combination
+     * of different failure reasons per stream. For the latter case, caller can
+     * check per stream failure reason returned in camera3_stream_buffer_ret.
+     */
+    CAMERA3_BUF_REQ_FAILED_UNKNOWN = 4,
+
+    /**
+     * Number of buffer request status
+     */
+    CAMERA3_BUF_REQ_NUM_STATUS
+
+} camera3_buffer_request_status_t;
+
+/**
+ * camera3_stream_buffer_req_status_t:
+ *
+ * The per stream buffer request status returned by request_stream_buffers()
+ */
+typedef enum camera3_stream_buffer_req_status {
+    /**
+     * Get buffer succeeds and all requested buffers are returned.
+     */
+    CAMERA3_PS_BUF_REQ_OK = 0,
+
+    /**
+     * Get buffer failed due to timeout waiting for an available buffer. This is
+     * likely due to the client application holding too many buffers, or the
+     * system is under memory pressure.
+     * This is not a fatal error. HAL can try to request buffer for this stream
+     * later. If HAL cannot get a buffer for certain capture request in time
+     * due to this error, HAL can send an ERROR_REQUEST to camera service and
+     * drop processing that request.
+     */
+    CAMERA3_PS_BUF_REQ_NO_BUFFER_AVAILABLE = 1,
+
+    /**
+     * Get buffer failed due to HAL has reached its maxBuffer count. This is not
+     * a fatal error. HAL can try to request buffer for this stream again after
+     * it returns at least one buffer of that stream to camera service.
+     */
+    CAMERA3_PS_BUF_REQ_MAX_BUFFER_EXCEEDED = 2,
+
+    /**
+     * Get buffer failed due to the stream is disconnected by client
+     * application, has been removed, or not recognized by camera service.
+     * This means application is no longer interested in this stream.
+     * Requesting buffer for this stream will never succeed after this error is
+     * returned. HAL must safely return all buffers of this stream after
+     * getting this error. If HAL gets another capture request later targeting
+     * a disconnected stream, HAL must send an ERROR_REQUEST to camera service
+     * and drop processing that request.
+     */
+    CAMERA3_PS_BUF_REQ_STREAM_DISCONNECTED = 3,
+
+    /**
+     * Get buffer failed for unknown reason. This is a fatal error and HAL must
+     * send ERROR_DEVICE to camera service and be ready to be closed.
+     */
+    CAMERA3_PS_BUF_REQ_UNKNOWN_ERROR = 4,
+
+    /**
+     * Number of buffer request status
+     */
+    CAMERA3_PS_BUF_REQ_NUM_STATUS
+} camera3_stream_buffer_req_status_t;
+
+typedef struct camera3_buffer_request {
+    /**
+     * The stream HAL wants to request buffer from
+     */
+    camera3_stream_t *stream;
+
+    /**
+     * The number of buffers HAL requested
+     */
+    uint32_t num_buffers_requested;
+} camera3_buffer_request_t;
+
+typedef struct camera3_stream_buffer_ret {
+    /**
+     * The stream HAL wants to request buffer from
+     */
+    camera3_stream_t *stream;
+
+    /**
+     * The status of buffer request of this stream
+     */
+    camera3_stream_buffer_req_status_t status;
+
+    /**
+     * Number of output buffers returned. Must be 0 when above status is not
+     * CAMERA3_PS_BUF_REQ_OK; otherwise the value must be equal to
+     * num_buffers_requested in the corresponding camera3_buffer_request_t
+     */
+    uint32_t num_output_buffers;
+
+    /**
+     * The returned output buffers for the stream.
+     * Caller of request_stream_buffers() should supply this with enough memory
+     * (num_buffers_requested * sizeof(camera3_stream_buffer_t))
+     */
+    camera3_stream_buffer_t *output_buffers;
+} camera3_stream_buffer_ret_t;
+
+
 /**********************************************************************
  *
  * Capture request/result definitions for the HAL process_capture_request()
@@ -2643,6 +2822,65 @@
     void (*notify)(const struct camera3_callback_ops *,
             const camera3_notify_msg_t *msg);
 
+    /**
+     * request_stream_buffers:
+     *
+     * <= CAMERA_DEVICE_API_VERISON_3_5:
+     *
+     *    DO NOT USE: not defined and must be NULL.
+     *
+     * >= CAMERA_DEVICE_API_VERISON_3_6:
+     *
+     * Synchronous callback for HAL to ask for output buffer from camera service.
+     *
+     * This call may be serialized in camera service so it is strongly
+     * recommended to only call this method from one thread.
+     *
+     * When camera device advertises
+     * (android.info.supportedBufferManagementVersion ==
+     * ANDROID_INFO_SUPPORTED_BUFFER_MANAGEMENT_VERSION_HIDL_DEVICE_3_5), HAL
+     * can use this method to request buffers from camera service.
+     *
+     * Caller is responsible for allocating enough memory for returned_buf_reqs
+     * argument (num_buffer_reqs * sizeof(camera3_stream_buffer_ret_t)) bytes
+     * and also the memory for the output_buffers field in each
+     * camera3_stream_buffer_ret_t
+     * (num_buffers_requested * sizeof(camera3_stream_buffer_t)) bytes
+     *
+     * Performance requirements:
+     * This is a blocking call that takes more time with more buffers requested.
+     * HAL should not request large amount of buffers on a latency critical code
+     * path. It is highly recommended to use a dedicated thread to perform
+     * all requestStreamBuffer calls, and adjust the thread priority and/or
+     * timing of making the call in order for buffers to arrive before HAL is
+     * ready to fill the buffer.
+     */
+    camera3_buffer_request_status_t (*request_stream_buffers)(
+            const struct camera3_callback_ops *,
+            uint32_t num_buffer_reqs,
+            const camera3_buffer_request_t *buffer_reqs,
+            /*out*/uint32_t *num_returned_buf_reqs,
+            /*out*/camera3_stream_buffer_ret_t *returned_buf_reqs);
+
+    /**
+     * return_stream_buffers:
+     *
+     * <= CAMERA_DEVICE_API_VERISON_3_5:
+     *
+     *    DO NOT USE: not defined and must be NULL.
+     *
+     * >= CAMERA_DEVICE_API_VERISON_3_6:
+     *
+     * Synchronous callback for HAL to return output buffers to camera service.
+     *
+     * If this method is called during a configure_streams() call, it will be
+     * blocked until camera service finishes the ongoing configure_streams() call.
+     */
+    void (*return_stream_buffers)(
+            const struct camera3_callback_ops *,
+            uint32_t num_buffers,
+            const camera3_stream_buffer_t* const* buffers);
+
 } camera3_callback_ops_t;
 
 /**********************************************************************
@@ -3221,8 +3459,82 @@
      */
     int (*flush)(const struct camera3_device *);
 
+    /**
+     * signal_stream_flush:
+     *
+     * <= CAMERA_DEVICE_API_VERISON_3_5:
+     *
+     *    Not defined and must be NULL
+     *
+     * >= CAMERA_DEVICE_API_VERISON_3_6:
+     *
+     * Signaling HAL camera service is about to perform configure_streams() call
+     * and HAL must return all buffers of designated streams. HAL must finish
+     * inflight requests normally and return all buffers belonging to the
+     * designated streams through process_capture_result() or
+     * return_stream_buffers() API in a timely manner, or camera service will run
+     * into a fatal error.
+     *
+     * Note that this call serves as an optional hint and camera service may
+     * skip calling this if all buffers are already returned.
+     *
+     */
+    void (*signal_stream_flush)(const struct camera3_device*,
+            uint32_t num_streams,
+            const camera3_stream_t* const* streams);
+
+    /**
+     * is_reconfiguration_required:
+     *
+     * <= CAMERA_DEVICE_API_VERISON_3_5:
+     *
+     *    Not defined and must be NULL
+     *
+     * >= CAMERA_DEVICE_API_VERISON_3_6:
+     *
+     * Check whether complete stream reconfiguration is required for possible new session
+     * parameter values.
+     *
+     * This method must be called by the camera framework in case the client changes
+     * the value of any advertised session parameters. Depending on the specific values
+     * the HAL can decide whether a complete stream reconfiguration is required. In case
+     * the HAL returns -ENVAL, the camera framework must skip the internal reconfiguration.
+     * In case Hal returns 0, the framework must reconfigure the streams and pass the
+     * new session parameter values accordingly.
+     * This call may be done by the framework some time before the request with new parameters
+     * is submitted to the HAL, and the request may be cancelled before it ever gets submitted.
+     * Therefore, the HAL must not use this query as an indication to change its behavior in any
+     * way.
+     * ------------------------------------------------------------------------
+     *
+     * Preconditions:
+     *
+     * The framework can call this method at any time after active
+     * session configuration. There must be no impact on the performance of
+     * pending camera requests in any way. In particular there must not be
+     * any glitches or delays during normal camera streaming.
+     *
+     * Performance requirements:
+     * HW and SW camera settings must not be changed and there must not be
+     * a user-visible impact on camera performance.
+     *
+     * @param oldSessionParams The currently applied session parameters.
+     * @param newSessionParams The new session parameters set by client.
+     *
+     * @return Status Status code for the operation, one of:
+     * 0:                    In case the stream reconfiguration is required
+     *
+     * -EINVAL:              In case the stream reconfiguration is not required.
+     *
+     * -ENOSYS:              In case the camera device does not support the
+     *                       reconfiguration query.
+     */
+    int (*is_reconfiguration_required)(const struct camera3_device*,
+            const camera_metadata_t* old_session_params,
+            const camera_metadata_t* new_session_params);
+
     /* reserved for future use */
-    void *reserved[8];
+    void *reserved[6];
 } camera3_device_ops_t;
 
 /**********************************************************************
diff --git a/include/hardware/camera_common.h b/include/hardware/camera_common.h
index edd1ada..16651a9 100644
--- a/include/hardware/camera_common.h
+++ b/include/hardware/camera_common.h
@@ -117,6 +117,22 @@
  * 4. Module initialization method. This will be called by the camera service
  *    right after the HAL module is loaded, to allow for one-time initialization
  *    of the HAL. It is called before any other module methods are invoked.
+ *
+ *******************************************************************************
+ * Version: 2.5 [CAMERA_MODULE_API_VERSION_2_5]
+ *
+ * This camera module version adds below API changes:
+ *
+ * 1. Support to query characteristics of a non-standalone physical camera, which can
+ *    only be accessed as part of a logical camera. It also adds camera stream combination
+ *    query.
+ *
+ * 2. Ability to query whether a particular camera stream combination is
+ *    supported by the camera device.
+ *
+ * 3. Device state change notification. This module version also supports
+ *    notification about the overall device state change, such as
+ *    folding/unfolding, or covering/uncovering of shutter.
  */
 
 /**
@@ -133,8 +149,9 @@
 #define CAMERA_MODULE_API_VERSION_2_2 HARDWARE_MODULE_API_VERSION(2, 2)
 #define CAMERA_MODULE_API_VERSION_2_3 HARDWARE_MODULE_API_VERSION(2, 3)
 #define CAMERA_MODULE_API_VERSION_2_4 HARDWARE_MODULE_API_VERSION(2, 4)
+#define CAMERA_MODULE_API_VERSION_2_5 HARDWARE_MODULE_API_VERSION(2, 5)
 
-#define CAMERA_MODULE_API_VERSION_CURRENT CAMERA_MODULE_API_VERSION_2_4
+#define CAMERA_MODULE_API_VERSION_CURRENT CAMERA_MODULE_API_VERSION_2_5
 
 /**
  * All device versions <= HARDWARE_DEVICE_API_VERSION(1, 0xFF) must be treated
@@ -149,6 +166,7 @@
 #define CAMERA_DEVICE_API_VERSION_3_3 HARDWARE_DEVICE_API_VERSION(3, 3)
 #define CAMERA_DEVICE_API_VERSION_3_4 HARDWARE_DEVICE_API_VERSION(3, 4)
 #define CAMERA_DEVICE_API_VERSION_3_5 HARDWARE_DEVICE_API_VERSION(3, 5)
+#define CAMERA_DEVICE_API_VERSION_3_6 HARDWARE_DEVICE_API_VERSION(3, 6)
 
 // Device version 3.5 is current, older HAL camera device versions are not
 // recommended for new devices.
@@ -644,6 +662,192 @@
 
 } camera_module_callbacks_t;
 
+/**
+ * camera_stream_t:
+ *
+ * A handle to a single camera input or output stream. A stream is defined by
+ * the framework by its buffer resolution and format and gralloc usage flags.
+ *
+ * The stream structures are owned by the framework and pointers to a
+ * camera_stream passed into the HAL by is_stream_combination_supported() are
+ * only valid within the scope of the call.
+ *
+ * All camera_stream members are immutable.
+ */
+typedef struct camera_stream {
+    /**
+     * The type of the stream, one of the camera3_stream_type_t values.
+     */
+    int stream_type;
+
+    /**
+     * The width in pixels of the buffers in this stream
+     */
+    uint32_t width;
+
+    /**
+     * The height in pixels of the buffers in this stream
+     */
+    uint32_t height;
+
+    /**
+     * The pixel format for the buffers in this stream. Format is a value from
+     * the HAL_PIXEL_FORMAT_* list in system/core/include/system/graphics.h, or
+     * from device-specific headers.
+     *
+     * If HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED is used, then the platform
+     * gralloc module will select a format based on the usage flags provided by
+     * the camera device and the other endpoint of the stream.
+     *
+     */
+    int format;
+
+    /**
+     * The gralloc usage flags for this stream, as needed by the HAL. The usage
+     * flags are defined in gralloc.h (GRALLOC_USAGE_*), or in device-specific
+     * headers.
+     *
+     * For output streams, these are the HAL's producer usage flags. For input
+     * streams, these are the HAL's consumer usage flags. The usage flags from
+     * the producer and the consumer will be combined together and then passed
+     * to the platform gralloc HAL module for allocating the gralloc buffers for
+     * each stream.
+     *
+     * The usage flag for an output stream may be bitwise
+     * combination of usage flags for multiple consumers, for the purpose of
+     * sharing one camera stream between those consumers. The HAL must fail
+     * the stream combination query call with -EINVAL if the combined flags cannot be
+     * supported due to imcompatible buffer format, dataSpace, or other hardware
+     * limitations.
+     */
+    uint32_t usage;
+
+    /**
+     * A field that describes the contents of the buffer. The format and buffer
+     * dimensions define the memory layout and structure of the stream buffers,
+     * while dataSpace defines the meaning of the data within the buffer.
+     *
+     * For most formats, dataSpace defines the color space of the image data.
+     * In addition, for some formats, dataSpace indicates whether image- or
+     * depth-based data is requested.  See system/core/include/system/graphics.h
+     * for details of formats and valid dataSpace values for each format.
+     *
+     * Always set by the camera service. The dataspace values are set
+     * using the V0 dataspace definitions in graphics.h
+     */
+    android_dataspace_t data_space;
+
+    /**
+     * The required output rotation of the stream, one of
+     * the camera3_stream_rotation_t values. This must be inspected by HAL along
+     * with stream width and height. For example, if the rotation is 90 degree
+     * and the stream width and height is 720 and 1280 respectively, camera service
+     * will supply buffers of size 720x1280, and HAL should capture a 1280x720 image
+     * and rotate the image by 90 degree counterclockwise. The rotation field is
+     * no-op when the stream type is input. Camera HAL must ignore the rotation
+     * field for an input stream.
+     *
+     * Always set by camera service. HAL must inspect this field during stream
+     * combination query and return -EINVAL if it cannot perform such rotation.
+     * HAL must always support CAMERA3_STREAM_ROTATION_0, so a
+     * is_stream_combination_supported() call must not fail for unsupported rotation if
+     * rotation field of all streams is CAMERA3_STREAM_ROTATION_0.
+     *
+     */
+    int rotation;
+
+    /**
+     * The physical camera id this stream belongs to.
+     * Always set by camera service. If the camera device is not a logical
+     * multi camera, or if the camera is a logical multi camera but the stream
+     * is not a physical output stream, this field will point to a 0-length
+     * string.
+     *
+     * A logical multi camera is a camera device backed by multiple physical
+     * cameras that are also exposed to the application. And for a logical
+     * multi camera, a physical output stream is an output stream specifically
+     * requested on an underlying physical camera.
+     *
+     * For an input stream, this field is guaranteed to be a 0-length string.
+     */
+    const char* physical_camera_id;
+
+} camera_stream_t;
+
+/**
+ * camera_stream_combination_t:
+ *
+ * A structure of stream definitions, used by is_stream_combination_supported(). This
+ * structure defines all the input & output streams for specific camera use case.
+ */
+typedef struct camera_stream_combination {
+    /**
+     * The total number of streams by the framework.  This includes
+     * both input and output streams. The number of streams will be at least 1,
+     * and there will be at least one output-capable stream.
+     */
+    uint32_t num_streams;
+
+    /**
+     * An array of camera streams, defining the input/output
+     * stream combination for the camera HAL device.
+     *
+     * At most one input-capable stream may be defined.
+     *
+     * At least one output-capable stream must be defined.
+     */
+    camera_stream_t *streams;
+
+    /**
+     * The operation mode of streams in this stream combination, one of the value
+     * defined in camera3_stream_configuration_mode_t.
+     *
+     */
+    uint32_t operation_mode;
+
+} camera_stream_combination_t;
+
+/**
+ * device_state_t:
+ *
+ * Possible physical states of the overall device, for use with
+ * notify_device_state_change.
+ */
+typedef enum device_state {
+    /**
+     * The device is in its normal physical configuration. This is the default if the
+     * device does not support multiple different states.
+     */
+    NORMAL = 0,
+
+    /**
+     * Camera device(s) facing backward are covered.
+     */
+    BACK_COVERED = 1 << 0,
+
+    /**
+     * Camera device(s) facing foward are covered.
+     */
+    FRONT_COVERED = 1 << 1,
+
+    /**
+     * The device is folded.  If not set, the device is unfolded or does not
+     * support folding.
+     *
+     * The exact point when this status change happens during the folding
+     * operation is device-specific.
+     */
+    FOLDED = 1 << 2,
+
+    /**
+     * First vendor-specific device state. All bits above and including this one
+     * are for vendor state values.  Values below this one must only be used
+     * for framework-defined states.
+     */
+    VENDOR_STATE_START = 1LL << 32
+
+} device_state_t;
+
 typedef struct camera_module {
     /**
      * Common methods of the camera module.  This *must* be the first member of
@@ -909,8 +1113,104 @@
      */
     int (*init)();
 
+    /**
+     * get_physical_camera_info:
+     *
+     * Return the static metadata for a physical camera as a part of a logical
+     * camera device. This function is only called for those physical camera
+     * ID(s) that are not exposed independently. In other words, camera_id will
+     * be greater or equal to the return value of get_number_of_cameras().
+     *
+     * Return values:
+     *
+     * 0:           On a successful operation
+     *
+     * -ENODEV:     The information cannot be provided due to an internal
+     *              error.
+     *
+     * -EINVAL:     The input arguments are invalid, i.e. the id is invalid,
+     *              and/or the module is invalid.
+     *
+     * Version information (based on camera_module_t.common.module_api_version):
+     *
+     * CAMERA_MODULE_API_VERSION_1_x/2_0/2_1/2_2/2_3/2_4:
+     *   Not provided by HAL module. Framework will not call this function.
+     *
+     * CAMERA_MODULE_API_VERSION_2_5 or higher:
+     *   If any of the camera devices accessible through this camera module is
+     *   a logical multi-camera, and at least one of the physical cameras isn't
+     *   a stand-alone camera device, this function will be called by the camera
+     *   framework. Calling this function with invalid physical_camera_id will
+     *   get -EINVAL, and NULL static_metadata.
+     */
+    int (*get_physical_camera_info)(int physical_camera_id,
+            camera_metadata_t **static_metadata);
+
+    /**
+     * is_stream_combination_supported:
+     *
+     * Check for device support of specific camera stream combination.
+     *
+     * Return values:
+     *
+     * 0:           In case the stream combination is supported.
+     *
+     * -EINVAL:     In case the stream combination is not supported.
+     *
+     * -ENOSYS:     In case stream combination query is not supported.
+     *
+     * Version information (based on camera_module_t.common.module_api_version):
+     *
+     * CAMERA_MODULE_API_VERSION_1_x/2_0/2_1/2_2/2_3/2_4:
+     *   Not provided by HAL module. Framework will not call this function.
+     *
+     * CAMERA_MODULE_API_VERSION_2_5 or higher:
+     *   Valid to be called by the framework.
+     */
+    int (*is_stream_combination_supported)(int camera_id,
+            const camera_stream_combination_t *streams);
+
+    /**
+     * notify_device_state_change:
+     *
+     * Notify the camera module that the state of the overall device has
+     * changed in some way that the HAL may want to know about.
+     *
+     * For example, a physical shutter may have been uncovered or covered,
+     * or a camera may have been covered or uncovered by an add-on keyboard
+     * or other accessory.
+     *
+     * The state is a bitfield of potential states, and some physical configurations
+     * could plausibly correspond to multiple different combinations of state bits.
+     * The HAL must ignore any state bits it is not actively using to determine
+     * the appropriate camera configuration.
+     *
+     * For example, on some devices the FOLDED state could mean that
+     * backward-facing cameras are covered by the fold, so FOLDED by itself implies
+     * BACK_COVERED. But other devices may support folding but not cover any cameras
+     * when folded, so for those FOLDED would not imply any of the other flags.
+     * Since these relationships are very device-specific, it is difficult to specify
+     * a comprehensive policy.  But as a recommendation, it is suggested that if a flag
+     * necessarily implies other flags are set as well, then those flags should be set.
+     * So even though FOLDED would be enough to infer BACK_COVERED on some devices, the
+     * BACK_COVERED flag should also be set for clarity.
+     *
+     * This method may be invoked by the HAL client at any time. It must not
+     * cause any active camera device sessions to be closed, but may dynamically
+     * change which physical camera a logical multi-camera is using for its
+     * active and future output.
+     *
+     * The method must be invoked by the HAL client at least once before the
+     * client calls ICameraDevice::open on any camera device interfaces listed
+     * by this provider, to establish the initial device state.
+     *
+     * Note that the deviceState is 64-bit bitmask, with system defined states in
+     * lower 32-bit and vendor defined states in upper 32-bit.
+     */
+    void (*notify_device_state_change)(uint64_t deviceState);
+
     /* reserved for future use */
-    void* reserved[5];
+    void* reserved[2];
 } camera_module_t;
 
 __END_DECLS
diff --git a/include/hardware/gralloc.h b/include/hardware/gralloc.h
index 5dafea0..b4f7e5a 100644
--- a/include/hardware/gralloc.h
+++ b/include/hardware/gralloc.h
@@ -131,6 +131,9 @@
      * handle this flag. */
     GRALLOC_USAGE_FOREIGN_BUFFERS       = 0x00200000U,
 
+    /* buffer will be used as input to HW HEIC image encoder */
+    GRALLOC_USAGE_HW_IMAGE_ENCODER      = 0x08000000U,
+
     /* Mask of all flags which could be passed to a gralloc module for buffer
      * allocation. Any flags not in this mask do not need to be handled by
      * gralloc modules. */
diff --git a/include/hardware/hwcomposer2.h b/include/hardware/hwcomposer2.h
index c9809ce..ab0922e 100644
--- a/include/hardware/hwcomposer2.h
+++ b/include/hardware/hwcomposer2.h
@@ -270,7 +270,18 @@
     HWC2_FUNCTION_GET_READBACK_BUFFER_FENCE,
     HWC2_FUNCTION_GET_RENDER_INTENTS,
     HWC2_FUNCTION_SET_COLOR_MODE_WITH_RENDER_INTENT,
-    HWC2_FUNCTION_GET_DATASPACE_SATURATION_MATRIX
+    HWC2_FUNCTION_GET_DATASPACE_SATURATION_MATRIX,
+
+    // composer 2.3
+    HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA,
+    HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES,
+    HWC2_FUNCTION_SET_LAYER_COLOR_TRANSFORM,
+    HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES,
+    HWC2_FUNCTION_SET_DISPLAYED_CONTENT_SAMPLING_ENABLED,
+    HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLE,
+    HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS,
+    HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT,
+    HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS,
 } hwc2_function_descriptor_t;
 
 /* Layer requests returned from getDisplayRequests */
@@ -347,6 +358,62 @@
     HWC2_MAX_FRAME_AVERAGE_LIGHT_LEVEL = 11,
 } hwc2_per_frame_metadata_key_t;
 
+/* SetDisplayedContentSampling values passed to setDisplayedContentSamplingEnabled */
+typedef enum {
+    HWC2_DISPLAYED_CONTENT_SAMPLING_INVALID = 0,
+
+    /* Enable displayed content sampling */
+    HWC2_DISPLAYED_CONTENT_SAMPLING_ENABLE = 1,
+
+    /* Disable displayed content sampling */
+    HWC2_DISPLAYED_CONTENT_SAMPLING_DISABLE = 2,
+} hwc2_displayed_content_sampling_t;
+
+typedef enum {
+    HWC2_FORMAT_COMPONENT_0 = 1 << 0, /* The first component (eg, for RGBA_8888, this is R) */
+    HWC2_FORMAT_COMPONENT_1 = 1 << 1, /* The second component (eg, for RGBA_8888, this is G) */
+    HWC2_FORMAT_COMPONENT_2 = 1 << 2, /* The third component (eg, for RGBA_8888, this is B) */
+    HWC2_FORMAT_COMPONENT_3 = 1 << 3, /* The fourth component (eg, for RGBA_8888, this is A) */
+} hwc2_format_color_component_t;
+
+/* Optional display capabilities which may be supported by some displays.
+ * The particular set of supported capabilities for a given display may be
+ * retrieved using getDisplayCapabilities. */
+typedef enum {
+    HWC2_DISPLAY_CAPABILITY_INVALID = 0,
+
+    /**
+     * Specifies that the display must apply a color transform even when either
+     * the client or the device has chosen that all layers should be composed by
+     * the client. This prevents the client from applying the color transform
+     * during its composition step.
+     * If getDisplayCapabilities is supported, the global capability
+     * HWC2_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM is ignored.
+     * If getDisplayCapabilities is not supported, and the global capability
+     * HWC2_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM is returned by getCapabilities,
+     * then all displays must be treated as having
+     * HWC2_DISPLAY_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM.
+     */
+    HWC2_DISPLAY_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM = 1,
+
+    /**
+     * Specifies that the display supports PowerMode::DOZE and
+     * PowerMode::DOZE_SUSPEND. DOZE_SUSPEND may not provide any benefit
+     * over DOZE (see the definition of PowerMode for more information),
+     * but if both DOZE and DOZE_SUSPEND are no different from
+     * PowerMode::ON, the device must not claim support.
+     * HWC2_DISPLAY_CAPABILITY_DOZE must be returned by getDisplayCapabilities
+     * when getDozeSupport indicates the display supports PowerMode::DOZE and
+     * PowerMode::DOZE_SUSPEND.
+     */
+    HWC2_DISPLAY_CAPABILITY_DOZE = 2,
+
+    /**
+     * Specified that the display supports brightness operations.
+     */
+    HWC2_DISPLAY_CAPABILITY_BRIGHTNESS = 3,
+} hwc2_display_capability_t;
+
 /*
  * Stringification Functions
  */
@@ -524,6 +591,17 @@
         case HWC2_FUNCTION_GET_RENDER_INTENTS: return "GetRenderIntents";
         case HWC2_FUNCTION_SET_COLOR_MODE_WITH_RENDER_INTENT: return "SetColorModeWithRenderIntent";
         case HWC2_FUNCTION_GET_DATASPACE_SATURATION_MATRIX: return "GetDataspaceSaturationMatrix";
+
+        // composer 2.3
+        case HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA: return "GetDisplayIdentificationData";
+        case HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES: return "GetDisplayCapabilities";
+        case HWC2_FUNCTION_SET_LAYER_COLOR_TRANSFORM: return "SetLayerColorTransform";
+        case HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES: return "GetDisplayedContentSamplingAttributes";
+        case HWC2_FUNCTION_SET_DISPLAYED_CONTENT_SAMPLING_ENABLED: return "SetDisplayedContentSamplingEnabled";
+        case HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLE: return "GetDisplayedContentSample";
+        case HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS: return "SetLayerPerFrameMetadataBlobs";
+        case HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT: return "GetDisplayBrightnessSupport";
+        case HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS: return "SetDisplayBrightness";
         default: return "Unknown";
     }
 }
@@ -569,6 +647,40 @@
     }
 }
 
+static inline const char* getDisplayedContentSamplingName(
+        hwc2_displayed_content_sampling_t sampling) {
+    switch (sampling) {
+        case HWC2_DISPLAYED_CONTENT_SAMPLING_INVALID: return "Invalid";
+        case HWC2_DISPLAYED_CONTENT_SAMPLING_ENABLE: return "Enable";
+        case HWC2_DISPLAYED_CONTENT_SAMPLING_DISABLE: return "Disable";
+        default: return "Unknown";
+    }
+}
+
+static inline const char* getFormatColorComponentName(hwc2_format_color_component_t component) {
+    switch (component) {
+        case HWC2_FORMAT_COMPONENT_0: return "FirstComponent";
+        case HWC2_FORMAT_COMPONENT_1: return "SecondComponent";
+        case HWC2_FORMAT_COMPONENT_2: return "ThirdComponent";
+        case HWC2_FORMAT_COMPONENT_3: return "FourthComponent";
+        default: return "Unknown";
+    }
+}
+
+static inline const char* getDisplayCapabilityName(hwc2_display_capability_t capability) {
+    switch (capability) {
+        case HWC2_DISPLAY_CAPABILITY_INVALID: return "Invalid";
+        case HWC2_DISPLAY_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM:
+            return "SkipClientColorTransform";
+        case HWC2_DISPLAY_CAPABILITY_DOZE:
+            return "Doze";
+        case HWC2_DISPLAY_CAPABILITY_BRIGHTNESS:
+            return "Brightness";
+        default:
+            return "Unknown";
+    }
+}
+
 #define TO_STRING(E, T, printer) \
     inline std::string to_string(E value) { return printer(value); } \
     inline std::string to_string(T value) { return to_string(static_cast<E>(value)); }
@@ -722,6 +834,17 @@
     GetRenderIntents = HWC2_FUNCTION_GET_RENDER_INTENTS,
     SetColorModeWithRenderIntent = HWC2_FUNCTION_SET_COLOR_MODE_WITH_RENDER_INTENT,
     GetDataspaceSaturationMatrix = HWC2_FUNCTION_GET_DATASPACE_SATURATION_MATRIX,
+
+    // composer 2.3
+    GetDisplayIdentificationData = HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA,
+    GetDisplayCapabilities = HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES,
+    SetLayerColorTransform = HWC2_FUNCTION_SET_LAYER_COLOR_TRANSFORM,
+    GetDisplayedContentSamplingAttributes = HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES,
+    SetDisplayedContentSamplingEnabled = HWC2_FUNCTION_SET_DISPLAYED_CONTENT_SAMPLING_ENABLED,
+    GetDisplayedContentSample = HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLE,
+    SetLayerPerFrameMetadataBlobs = HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS,
+    GetDisplayBrightnessSupport = HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT,
+    SetDisplayBrightness = HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS,
 };
 TO_STRING(hwc2_function_descriptor_t, FunctionDescriptor,
         getFunctionDescriptorName)
@@ -758,6 +881,14 @@
 };
 TO_STRING(hwc2_vsync_t, Vsync, getVsyncName)
 
+enum class DisplayCapability : int32_t {
+    Invalid = HWC2_DISPLAY_CAPABILITY_INVALID,
+    SkipClientColorTransform = HWC2_DISPLAY_CAPABILITY_SKIP_CLIENT_COLOR_TRANSFORM,
+    Doze = HWC2_DISPLAY_CAPABILITY_DOZE,
+    Brightness = HWC2_DISPLAY_CAPABILITY_BRIGHTNESS,
+};
+TO_STRING(hwc2_display_capability_t, DisplayCapability, getDisplayCapabilityName)
+
 } // namespace HWC2
 
 __BEGIN_DECLS
@@ -1374,6 +1505,35 @@
         hwc2_device_t* device, hwc2_display_t display,
         int32_t* /*hwc2_display_type_t*/ outType);
 
+/* getDisplayIdentificationData(..., outPort, outDataSize, outData)
+ * Descriptor: HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA
+ * Optional for HWC2 devices
+ *
+ * If supported, getDisplayIdentificationData returns the port and data that
+ * describe a physical display. The port is a unique number that identifies a
+ * physical connector (e.g. eDP, HDMI) for display output. The data blob is
+ * parsed to determine its format, typically EDID 1.3 as specified in VESA
+ * E-EDID Standard Release A Revision 1.
+ *
+ * Devices for which display identification is unsupported must return null when
+ * getFunction is called with HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA.
+ *
+ * Parameters:
+ *   outPort - the connector to which the display is connected;
+ *             pointer will be non-NULL
+ *   outDataSize - if outData is NULL, the size in bytes of the data which would
+ *       have been returned; if outData is not NULL, the size of outData, which
+ *       must not exceed the value stored in outDataSize prior to the call;
+ *       pointer will be non-NULL
+ *   outData - the EDID 1.3 blob identifying the display
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY - an invalid display handle was passed in
+ */
+typedef int32_t /*hwc2_error_t*/ (*HWC2_PFN_GET_DISPLAY_IDENTIFICATION_DATA)(
+        hwc2_device_t* device, hwc2_display_t display, uint8_t* outPort,
+        uint32_t* outDataSize, uint8_t* outData);
+
 /* getDozeSupport(..., outSupport)
  * Descriptor: HWC2_FUNCTION_GET_DOZE_SUPPORT
  * Must be provided by all HWC2 devices
@@ -2073,6 +2233,42 @@
         uint32_t numElements, const int32_t* /*hw2_per_frame_metadata_key_t*/ keys,
         const float* metadata);
 
+/* setLayerPerFrameMetadataBlobs(...,numElements, keys, sizes, blobs)
+ * Descriptor: HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS
+ * Optional for HWC2 devices
+ *
+ * If supported, (getFunction(HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS)
+ * is non-null), sets the metadata for the given display and layer.
+ *
+ * Upon returning from this function, the metadata change must have fully taken
+ * effect.
+ *
+ * This function must only be called if getPerFrameMetadataKeys is non-NULL
+ * and returns at least one key that corresponds to a blob type.
+ *
+ * Current valid blob type keys are: HDR10_PLUS_SEI
+ *
+ * Parameters:
+ *   numElements is the number of elements in each of the keys, sizes, and
+ *   metadata arrays
+ *   keys is a pointer to an array of keys.  Current valid keys are those listed
+ *   above as valid blob type keys.
+ *   sizes is a pointer to an array of unsigned ints specifying the sizes of
+ *   each metadata blob
+ *   metadata is a pointer to a blob of data holding all blobs contiguously in
+ *   memory
+ *
+ *   Returns HWC2_ERROR_NONE or one of the following erros:
+ *     HWC2_ERROR_BAD_DISPLAY - an invalid display handle was passed in
+ *     HWC2_ERROR_BAD_PARAMETER - sizes of keys and metadata parameters does
+ *     not match numElements, numElements < 0, or keys contains a
+ *     non-valid key (see above for current valid blob type keys).
+ *     HWC2_ERROR_UNSUPPORTED - metadata is not supported on this display
+ */
+typedef int32_t /*hwc2_error_t*/ (*HWC2_PFN_SET_LAYER_PER_FRAME_METADATA_BLOBS)(
+        hwc2_device_t* device, hwc2_display_t display, hwc2_layer_t layer,
+        uint32_t numElements, const int32_t* keys, const uint32_t* sizes,
+        const uint8_t* metadata);
 /*
  * Layer State Functions
  *
@@ -2326,6 +2522,207 @@
         hwc2_device_t* device, hwc2_display_t display, hwc2_layer_t layer,
         uint32_t z);
 
+/* setLayerColorTransform(..., matrix)
+ * Descriptor: HWC2_FUNCTION_SET_LAYER_COLOR_TRANSFORM
+ * Optional by all HWC2 devices
+ *
+ * Sets a matrix for color transform which will be applied on this layer
+ * before composition.
+ *
+ * If the device is not capable of apply the matrix on this layer, it must force
+ * this layer to client composition during VALIDATE_DISPLAY.
+ *
+ * The matrix provided is an affine color transformation of the following form:
+ *
+ * |r.r r.g r.b 0|
+ * |g.r g.g g.b 0|
+ * |b.r b.g b.b 0|
+ * |Tr  Tg  Tb  1|
+ *
+ * This matrix must be provided in row-major form:
+ *
+ * {r.r, r.g, r.b, 0, g.r, ...}.
+ *
+ * Given a matrix of this form and an input color [R_in, G_in, B_in],
+ * the input color must first be converted to linear space
+ * [R_linear, G_linear, B_linear], then the output linear color
+ * [R_out_linear, G_out_linear, B_out_linear] will be:
+ *
+ * R_out_linear = R_linear * r.r + G_linear * g.r + B_linear * b.r + Tr
+ * G_out_linear = R_linear * r.g + G_linear * g.g + B_linear * b.g + Tg
+ * B_out_linear = R_linear * r.b + G_linear * g.b + B_linear * b.b + Tb
+ *
+ * [R_out_linear, G_out_linear, B_out_linear] must then be converted to
+ * gamma space: [R_out, G_out, B_out] before blending.
+ *
+ * Parameters:
+ *   matrix - a 4x4 transform matrix (16 floats) as described above
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY - an invalid display handle was passed in
+ *   HWC2_ERROR_BAD_LAYER - an invalid layer handle was passed in
+ */
+typedef int32_t /*hwc2_error_t*/ (*HWC2_PFN_SET_LAYER_COLOR_TRANSFORM)(
+        hwc2_device_t* device, hwc2_display_t display, hwc2_layer_t layer,
+        const float* matrix);
+
+/* getDisplayedContentSamplingAttributes(...,
+ *      format, dataspace, supported_components, max_frames)
+ * Descriptor: HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES
+ * Optional by all HWC2 devices
+ *
+ * Query for what types of color sampling the hardware supports.
+ *
+ * Parameters:
+ *   format - The format of the sampled pixels; pointer will be non-NULL
+ *   dataspace - The dataspace of the sampled pixels; pointer will be non-NULL
+ *   supported_components - The mask of which components can be sampled; pointer
+ *      will be non-NULL
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY when an invalid display was passed in, or
+ *   HWC2_ERROR_UNSUPPORTED when there is no efficient way to sample.
+ */
+typedef int32_t (*HWC2_PFN_GET_DISPLAYED_CONTENT_SAMPLING_ATTRIBUTES)(
+        hwc2_device_t* device, hwc2_display_t display,
+        int32_t* /* android_pixel_format_t */ format,
+        int32_t* /* android_dataspace_t */ dataspace,
+        uint8_t* /* mask of android_component_t */ supported_components);
+
+/* setDisplayedContentSamplingEnabled(..., enabled)
+ * Descriptor: HWC2_FUNCTION_SET_DISPLAYED_CONTENT_SAMPLING_ENABLED
+ * Optional by all HWC2 devices
+ *
+ * Enables or disables the collection of color content statistics
+ * on this display.
+ *
+ * Sampling occurs on the contents of the final composition on this display
+ * (i.e., the contents presented on screen).
+ *
+ * Sampling support is optional, and is set to DISABLE by default.
+ * On each call to ENABLE, all collected statistics will be reset.
+ *
+ * Sample data can be queried via getDisplayedContentSample().
+ *
+ * Parameters:
+ *   enabled - indicates whether to enable or disable sampling.
+ *   component_mask - The mask of which components should be sampled.
+ *      If zero, all supported components are to be enabled.
+ *   max_frames - is the maximum number of frames that should be stored before
+ *      discard. The sample represents the most-recently posted frames.
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY when an invalid display handle was passed in,
+ *   HWC2_ERROR_BAD_PARAMETER when enabled was an invalid value, or
+ *   HWC2_ERROR_NO_RESOURCES when the requested ringbuffer size via max_frames
+ *                           was not available.
+ *   HWC2_ERROR_UNSUPPORTED when there is no efficient way to sample.
+ */
+typedef int32_t (*HWC2_PFN_SET_DISPLAYED_CONTENT_SAMPLING_ENABLED)(
+        hwc2_device_t* device, hwc2_display_t display,
+        int32_t /*hwc2_displayed_content_sampling_t*/ enabled,
+        uint8_t /* mask of android_component_t */ component_mask,
+        uint64_t max_frames);
+
+/* getDisplayedContentSample(..., component, max_frames, timestamp,
+ *     samples_size, samples, frame_count)
+ * Descriptor: HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLE
+ * Optional by all HWC2 devices
+ *
+ * Collects the results of display content color sampling for display.
+ *
+ * Collection of data can occur whether the sampling is in ENABLE or
+ * DISABLE state.
+ *
+ * Parameters:
+ * max_frames - is the maximum number of frames that should be represented in
+ *      the sample. The sample represents the most-recently posted frames.
+ *      If max_frames is 0, all frames are to be represented by the sample.
+ * timestamp - is the timestamp after which any frames were posted that should
+ *      be included in the sample. Timestamp is CLOCK_MONOTONIC.
+ *      If timestamp is 0, do not filter from the sample by time.
+ * frame_count - The number of frames represented by this sample; pointer will
+ *      be non-NULL.
+ * samples_size - The sizes of the color histogram representing the color
+ *      sampling. Sample_sizes are indexed in the same order as
+ *      HWC2_FORMAT_COMPONENT_.
+ * samples - The arrays of data corresponding to the sampling data. Samples are
+ *      indexed in the same order as HWC2_FORMAT_COMPONENT_.
+ *      The size of each sample is the samples_size for the same index.
+ *      Each components sample is an array that is to be filled with the
+ *      evenly-weighted buckets of a histogram counting how many times a pixel
+ *      of the given component was displayed onscreen. Caller owns the data and
+ *      pointer may be NULL to query samples_size.
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY   when an invalid display was passed in, or
+ *   HWC2_ERROR_UNSUPPORTED   when there is no efficient way to sample, or
+ *   HWC2_ERROR_BAD_PARAMETER when the component is not supported by the hardware.
+ */
+typedef int32_t (*HWC2_PFN_GET_DISPLAYED_CONTENT_SAMPLE)(
+        hwc2_device_t* device, hwc2_display_t display,
+        uint64_t max_frames, uint64_t timestamp,
+        uint64_t* frame_count, int32_t samples_size[4], uint64_t* samples[4]);
+
+/* getDisplayCapabilities(..., outCapabilities)
+ * Descriptor: HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES
+ * Required for HWC2 devices for composer 2.3
+ * Optional for HWC2 devices for composer 2.1 and 2.2
+ *
+ * getDisplayCapabilities returns a list of supported capabilities
+ * (as described in the definition of Capability above).
+ * This list must not change after initialization.
+ *
+ * Parameters:
+ *   outNumCapabilities - if outCapabilities was nullptr, returns the number of capabilities
+ *       if outCapabilities was not nullptr, returns the number of capabilities stored in
+ *       outCapabilities, which must not exceed the value stored in outNumCapabilities prior
+ *       to the call; pointer will be non-NULL
+ *   outCapabilities - a list of supported capabilities.
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY - an invalid display handle was passed in
+ */
+typedef int32_t /*hwc2_error_t*/ (*HWC2_PFN_GET_DISPLAY_CAPABILITIES)(
+        hwc2_device_t* device, hwc2_display_t display, uint32_t* outNumCapabilities,
+        uint32_t* outCapabilities);
+
+/* getDisplayBrightnessSupport(displayToken)
+ * Descriptor: HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT
+ * Required for HWC2 devices for composer 2.3
+ * Optional for HWC2 devices for composer 2.1 and 2.2
+ *
+ * getDisplayBrightnessSupport returns whether brightness operations are supported on a display.
+ *
+ * Parameters:
+ *   outSupport - whether the display supports operations.
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY when the display is invalid.
+ */
+typedef int32_t /*hwc_error_t*/ (*HWC2_PFN_GET_DISPLAY_BRIGHTNESS_SUPPORT)(hwc2_device_t* device,
+        hwc2_display_t display, bool* outSupport);
+
+/* setDisplayBrightness(displayToken, brightnesss)
+ * Descriptor: HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS
+ * Required for HWC2 devices for composer 2.3
+ * Optional for HWC2 devices for composer 2.1 and 2.2
+ *
+ * setDisplayBrightness sets the brightness of a display.
+ *
+ * Parameters:
+ *   brightness - a number between 0.0f (minimum brightness) and 1.0f (maximum brightness), or
+ *          -1.0f to turn the backlight off.
+ *
+ * Returns HWC2_ERROR_NONE or one of the following errors:
+ *   HWC2_ERROR_BAD_DISPLAY   when the display is invalid, or
+ *   HWC2_ERROR_UNSUPPORTED   when brightness operations are not supported, or
+ *   HWC2_ERROR_BAD_PARAMETER when the brightness is invalid, or
+ *   HWC2_ERROR_NO_RESOURCES  when the brightness cannot be applied.
+ */
+typedef int32_t /*hwc_error_t*/ (*HWC2_PFN_SET_DISPLAY_BRIGHTNESS)(hwc2_device_t* device,
+        hwc2_display_t display, float brightness);
+
 __END_DECLS
 
 #endif
diff --git a/include/hardware/sound_trigger.h b/include/hardware/sound_trigger.h
index d7828ac..99346ef 100644
--- a/include/hardware/sound_trigger.h
+++ b/include/hardware/sound_trigger.h
@@ -40,7 +40,8 @@
 
 #define SOUND_TRIGGER_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION(1, 0)
 #define SOUND_TRIGGER_DEVICE_API_VERSION_1_1 HARDWARE_DEVICE_API_VERSION(1, 1)
-#define SOUND_TRIGGER_DEVICE_API_VERSION_CURRENT SOUND_TRIGGER_DEVICE_API_VERSION_1_1
+#define SOUND_TRIGGER_DEVICE_API_VERSION_1_2 HARDWARE_DEVICE_API_VERSION(1, 2)
+#define SOUND_TRIGGER_DEVICE_API_VERSION_CURRENT SOUND_TRIGGER_DEVICE_API_VERSION_1_2
 
 /**
  * List of known sound trigger HAL modules. This is the base name of the sound_trigger HAL
@@ -114,6 +115,14 @@
      * If no implementation is provided, stop_recognition will be called for each running model.
      */
     int (*stop_all_recognitions)(const struct sound_trigger_hw_device* dev);
+
+    /* Get the current state of a given model.
+     * The state will be returned as a recognition event, via the callback that was registered
+     * in the start_recognition method.
+     * Only supported for device api versions SOUND_TRIGGER_DEVICE_API_VERSION_1_2 or above.
+     */
+    int (*get_model_state)(const struct sound_trigger_hw_device *dev,
+                           sound_model_handle_t sound_model_handle);
 };
 
 typedef struct sound_trigger_hw_device sound_trigger_hw_device_t;
diff --git a/modules/audio_remote_submix/audio_hw.cpp b/modules/audio_remote_submix/audio_hw.cpp
index 8c0c097..6fac56f 100644
--- a/modules/audio_remote_submix/audio_hw.cpp
+++ b/modules/audio_remote_submix/audio_hw.cpp
@@ -488,17 +488,26 @@
     ALOGV("submix_audio_device_destroy_pipe_l()");
     int route_idx = -1;
     if (in != NULL) {
+        bool shut_down = false;
 #if ENABLE_LEGACY_INPUT_OPEN
         const_cast<struct submix_stream_in*>(in)->ref_count--;
         route_idx = in->route_handle;
         ALOG_ASSERT(rsxadev->routes[route_idx].input == in);
         if (in->ref_count == 0) {
             rsxadev->routes[route_idx].input = NULL;
+            shut_down = true;
         }
         ALOGV("submix_audio_device_destroy_pipe_l(): input ref_count %d", in->ref_count);
 #else
         rsxadev->input = NULL;
+        shut_down = true;
 #endif // ENABLE_LEGACY_INPUT_OPEN
+        if (shut_down) {
+            sp <MonoPipe> sink = rsxadev->routes[in->route_handle].rsxSink;
+            if (sink != NULL) {
+              sink->shutdown(true);
+            }
+        }
     }
     if (out != NULL) {
         route_idx = out->route_handle;
@@ -1648,6 +1657,12 @@
     ALOGV("adev_open_input_stream(): about to create pipe");
     submix_audio_device_create_pipe_l(rsxadev, config, DEFAULT_PIPE_SIZE_IN_FRAMES,
                                     DEFAULT_PIPE_PERIOD_COUNT, in, NULL, address, route_idx);
+
+    sp <MonoPipe> sink = rsxadev->routes[route_idx].rsxSink;
+    if (sink != NULL) {
+        sink->shutdown(false);
+    }
+
 #if LOG_STREAMS_TO_FILES
     if (in->log_fd >= 0) close(in->log_fd);
     in->log_fd = open(LOG_STREAM_IN_FILENAME, O_CREAT | O_TRUNC | O_WRONLY,
diff --git a/modules/camera/3_4/v4l2_camera_hal.cpp b/modules/camera/3_4/v4l2_camera_hal.cpp
index 386160f..17fac1a 100644
--- a/modules/camera/3_4/v4l2_camera_hal.cpp
+++ b/modules/camera/3_4/v4l2_camera_hal.cpp
@@ -238,4 +238,5 @@
     .open_legacy = v4l2_camera_hal::open_legacy,
     .set_torch_mode = v4l2_camera_hal::set_torch_mode,
     .init = nullptr,
-    .reserved = {nullptr, nullptr, nullptr, nullptr, nullptr}};
+    .get_physical_camera_info = nullptr,
+    .reserved = {nullptr, nullptr}};
diff --git a/modules/soundtrigger/sound_trigger_hw.c b/modules/soundtrigger/sound_trigger_hw.c
index 0089f98..38212c4 100644
--- a/modules/soundtrigger/sound_trigger_hw.c
+++ b/modules/soundtrigger/sound_trigger_hw.c
@@ -811,6 +811,41 @@
     return 0;
 }
 
+static int stdev_get_model_state(const struct sound_trigger_hw_device *dev,
+                                 sound_model_handle_t handle) {
+    int ret = 0;
+    struct stub_sound_trigger_device *stdev = (struct stub_sound_trigger_device *)dev;
+    ALOGI("%s", __func__);
+    pthread_mutex_lock(&stdev->lock);
+
+    struct recognition_context *model_context = get_model_context(stdev, handle);
+    if (!model_context) {
+        ALOGW("Can't find sound model handle %d in registered list", handle);
+        ret = -ENOSYS;
+        goto exit;
+    }
+
+    if (!model_context->model_started) {
+        ALOGW("Sound model %d not started", handle);
+        ret = -ENOSYS;
+        goto exit;
+    }
+
+    if (model_context->recognition_callback == NULL) {
+        ALOGW("Sound model %d not initialized", handle);
+        ret = -ENOSYS;
+        goto exit;
+    }
+
+    // TODO(mdooley): trigger recognition event
+
+exit:
+    pthread_mutex_unlock(&stdev->lock);
+    ALOGI("%s done for handle %d", __func__, handle);
+
+    return ret;
+}
+
 __attribute__ ((visibility ("default")))
 int sound_trigger_open_for_streaming() {
     int ret = 0;
@@ -863,6 +898,7 @@
     stdev->device.start_recognition = stdev_start_recognition;
     stdev->device.stop_recognition = stdev_stop_recognition;
     stdev->device.stop_all_recognitions = stdev_stop_all_recognitions;
+    stdev->device.get_model_state = stdev_get_model_state;
 
     pthread_mutex_init(&stdev->lock, (const pthread_mutexattr_t *) NULL);
 
@@ -890,4 +926,3 @@
         .methods = &hal_module_methods,
     },
 };
-
diff --git a/modules/usbaudio/audio_hal.c b/modules/usbaudio/audio_hal.c
index 81c9fd6..f0ea015 100644
--- a/modules/usbaudio/audio_hal.c
+++ b/modules/usbaudio/audio_hal.c
@@ -15,7 +15,7 @@
  */
 
 #define LOG_TAG "modules.usbaudio.audio_hal"
-/*#define LOG_NDEBUG 0*/
+/* #define LOG_NDEBUG 0 */
 
 #include <errno.h>
 #include <inttypes.h>
@@ -47,27 +47,26 @@
 /* Lock play & record samples rates at or above this threshold */
 #define RATELOCK_THRESHOLD 96000
 
+#define max(a, b) ((a) > (b) ? (a) : (b))
+#define min(a, b) ((a) < (b) ? (a) : (b))
+
 struct audio_device {
     struct audio_hw_device hw_device;
 
     pthread_mutex_t lock; /* see note below on mutex acquisition order */
 
     /* output */
-    alsa_device_profile out_profile;
     struct listnode output_stream_list;
 
     /* input */
-    alsa_device_profile in_profile;
     struct listnode input_stream_list;
 
     /* lock input & output sample rates */
     /*FIXME - How do we address multiple output streams? */
-    uint32_t device_sample_rate;
+    uint32_t device_sample_rate;    // this should be a rate that is common to both input & output
 
     bool mic_muted;
 
-    bool standby;
-
     int32_t inputs_open; /* number of input streams currently open. */
 };
 
@@ -79,16 +78,13 @@
 struct stream_out {
     struct audio_stream_out stream;
 
-    struct stream_lock  lock;
+    struct stream_lock lock;
 
     bool standby;
 
     struct audio_device *adev;           /* hardware information - only using this for the lock */
 
-    const alsa_device_profile *profile; /* Points to the alsa_device_profile in the audio_device.
-                                         * Const, so modifications go through adev->out_profile
-                                         * and thus should have the hardware lock and ensure
-                                         * stream is not active and no other open output streams.
+    alsa_device_profile profile;        /* The profile of the ALSA device connected to the stream.
                                          */
 
     alsa_device_proxy proxy;            /* state of the stream */
@@ -121,10 +117,7 @@
 
     struct audio_device *adev;           /* hardware information - only using this for the lock */
 
-    const alsa_device_profile *profile; /* Points to the alsa_device_profile in the audio_device.
-                                         * Const, so modifications go through adev->out_profile
-                                         * and thus should have the hardware lock and ensure
-                                         * stream is not active and no other open input streams.
+    alsa_device_profile profile;        /* The profile of the ALSA device connected to the stream.
                                          */
 
     alsa_device_proxy proxy;            /* state of the stream */
@@ -344,9 +337,7 @@
 
     stream_lock(&out->lock);
     if (!out->standby) {
-        device_lock(out->adev);
         proxy_close(&out->proxy);
-        device_unlock(out->adev);
         out->standby = true;
     }
     stream_unlock(&out->lock);
@@ -358,7 +349,7 @@
 
     if (out_stream != NULL) {
         dprintf(fd, "Output Profile:\n");
-        profile_dump(out_stream->profile, fd);
+        profile_dump(&out_stream->profile, fd);
 
         dprintf(fd, "Output Proxy:\n");
         proxy_dump(&out_stream->proxy, fd);
@@ -383,27 +374,23 @@
     }
 
     stream_lock(&out->lock);
-    /* Lock the device because that is where the profile lives */
-    device_lock(out->adev);
-
-    if (!profile_is_cached_for(out->profile, card, device)) {
+    if (!profile_is_cached_for(&out->profile, card, device)) {
         /* cannot read pcm device info if playback is active */
         if (!out->standby)
             ret_value = -ENOSYS;
         else {
-            int saved_card = out->profile->card;
-            int saved_device = out->profile->device;
-            out->adev->out_profile.card = card;
-            out->adev->out_profile.device = device;
-            ret_value = profile_read_device_info(&out->adev->out_profile) ? 0 : -EINVAL;
+            int saved_card = out->profile.card;
+            int saved_device = out->profile.device;
+            out->profile.card = card;
+            out->profile.device = device;
+            ret_value = profile_read_device_info(&out->profile) ? 0 : -EINVAL;
             if (ret_value != 0) {
-                out->adev->out_profile.card = saved_card;
-                out->adev->out_profile.device = saved_device;
+                out->profile.card = saved_card;
+                out->profile.device = saved_device;
             }
         }
     }
 
-    device_unlock(out->adev);
     stream_unlock(&out->lock);
 
     return ret_value;
@@ -413,11 +400,7 @@
 {
     struct stream_out *out = (struct stream_out *)stream;
     stream_lock(&out->lock);
-    device_lock(out->adev);
-
-    char * params_str =  device_get_parameters(out->profile, keys);
-
-    device_unlock(out->adev);
+    char * params_str =  device_get_parameters(&out->profile, keys);
     stream_unlock(&out->lock);
     return params_str;
 }
@@ -436,7 +419,7 @@
 /* must be called with hw device and output stream mutexes locked */
 static int start_output_stream(struct stream_out *out)
 {
-    ALOGV("start_output_stream(card:%d device:%d)", out->profile->card, out->profile->device);
+    ALOGV("start_output_stream(card:%d device:%d)", out->profile.card, out->profile.device);
 
     return proxy_open(&out->proxy);
 }
@@ -448,9 +431,7 @@
 
     stream_lock(&out->lock);
     if (out->standby) {
-        device_lock(out->adev);
         ret = start_output_stream(out);
-        device_unlock(out->adev);
         if (ret != 0) {
             goto err;
         }
@@ -573,43 +554,45 @@
     stream_lock_init(&out->lock);
 
     out->adev = (struct audio_device *)hw_dev;
-    device_lock(out->adev);
-    out->profile = &out->adev->out_profile;
+
+    profile_init(&out->profile, PCM_OUT);
 
     // build this to hand to the alsa_device_proxy
     struct pcm_config proxy_config;
     memset(&proxy_config, 0, sizeof(proxy_config));
 
     /* Pull out the card/device pair */
-    parse_card_device_params(address, &out->adev->out_profile.card, &out->adev->out_profile.device);
+    parse_card_device_params(address, &out->profile.card, &out->profile.device);
 
-    profile_read_device_info(&out->adev->out_profile);
+    profile_read_device_info(&out->profile);
 
     int ret = 0;
 
     /* Rate */
     if (config->sample_rate == 0) {
-        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(out->profile);
-    } else if (profile_is_sample_rate_valid(out->profile, config->sample_rate)) {
+        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(&out->profile);
+    } else if (profile_is_sample_rate_valid(&out->profile, config->sample_rate)) {
         proxy_config.rate = config->sample_rate;
     } else {
-        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(out->profile);
+        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(&out->profile);
         ret = -EINVAL;
     }
 
+    /* TODO: This is a problem if the input does not support this rate */
+    device_lock(out->adev);
     out->adev->device_sample_rate = config->sample_rate;
     device_unlock(out->adev);
 
     /* Format */
     if (config->format == AUDIO_FORMAT_DEFAULT) {
-        proxy_config.format = profile_get_default_format(out->profile);
+        proxy_config.format = profile_get_default_format(&out->profile);
         config->format = audio_format_from_pcm_format(proxy_config.format);
     } else {
         enum pcm_format fmt = pcm_format_from_audio_format(config->format);
-        if (profile_is_format_valid(out->profile, fmt)) {
+        if (profile_is_format_valid(&out->profile, fmt)) {
             proxy_config.format = fmt;
         } else {
-            proxy_config.format = profile_get_default_format(out->profile);
+            proxy_config.format = profile_get_default_format(&out->profile);
             config->format = audio_format_from_pcm_format(proxy_config.format);
             ret = -EINVAL;
         }
@@ -619,7 +602,7 @@
     bool calc_mask = false;
     if (config->channel_mask == AUDIO_CHANNEL_NONE) {
         /* query case */
-        out->hal_channel_count = profile_get_default_channel_count(out->profile);
+        out->hal_channel_count = profile_get_default_channel_count(&out->profile);
         calc_mask = true;
     } else {
         /* explicit case */
@@ -647,8 +630,9 @@
     // Validate the "logical" channel count against support in the "actual" profile.
     // if they differ, choose the "actual" number of channels *closest* to the "logical".
     // and store THAT in proxy_config.channels
-    proxy_config.channels = profile_get_closest_channel_count(out->profile, out->hal_channel_count);
-    proxy_prepare(&out->proxy, out->profile, &proxy_config);
+    proxy_config.channels =
+            profile_get_closest_channel_count(&out->profile, out->hal_channel_count);
+    proxy_prepare(&out->proxy, &out->profile, &proxy_config);
 
     /* TODO The retry mechanism isn't implemented in AudioPolicyManager/AudioFlinger
      * So clear any errors that may have occurred above.
@@ -672,9 +656,7 @@
                                      struct audio_stream_out *stream)
 {
     struct stream_out *out = (struct stream_out *)stream;
-    ALOGV("adev_close_output_stream(c:%d d:%d)", out->profile->card, out->profile->device);
-
-    adev_remove_stream_from_list(out->adev, &out->list_node);
+    ALOGV("adev_close_output_stream(c:%d d:%d)", out->profile.card, out->profile.device);
 
     /* Close the pcm device */
     out_standby(&stream->common);
@@ -684,6 +666,8 @@
     out->conversion_buffer = NULL;
     out->conversion_buffer_size = 0;
 
+    adev_remove_stream_from_list(out->adev, &out->list_node);
+
     device_lock(out->adev);
     out->adev->device_sample_rate = 0;
     device_unlock(out->adev);
@@ -746,12 +730,9 @@
 
     stream_lock(&in->lock);
     if (!in->standby) {
-        device_lock(in->adev);
         proxy_close(&in->proxy);
-        device_unlock(in->adev);
         in->standby = true;
     }
-
     stream_unlock(&in->lock);
 
     return 0;
@@ -762,7 +743,7 @@
   const struct stream_in* in_stream = (const struct stream_in*)stream;
   if (in_stream != NULL) {
       dprintf(fd, "Input Profile:\n");
-      profile_dump(in_stream->profile, fd);
+      profile_dump(&in_stream->profile, fd);
 
       dprintf(fd, "Input Proxy:\n");
       proxy_dump(&in_stream->proxy, fd);
@@ -789,19 +770,20 @@
     stream_lock(&in->lock);
     device_lock(in->adev);
 
-    if (card >= 0 && device >= 0 && !profile_is_cached_for(in->profile, card, device)) {
-        /* cannot read pcm device info if playback is active, or more than one open stream */
+    if (card >= 0 && device >= 0 && !profile_is_cached_for(&in->profile, card, device)) {
+        /* cannot read pcm device info if capture is active, or more than one open stream */
         if (!in->standby || in->adev->inputs_open > 1)
             ret_value = -ENOSYS;
         else {
-            int saved_card = in->profile->card;
-            int saved_device = in->profile->device;
-            in->adev->in_profile.card = card;
-            in->adev->in_profile.device = device;
-            ret_value = profile_read_device_info(&in->adev->in_profile) ? 0 : -EINVAL;
+            int saved_card = in->profile.card;
+            int saved_device = in->profile.device;
+            in->profile.card = card;
+            in->profile.device = device;
+            ret_value = profile_read_device_info(&in->profile) ? 0 : -EINVAL;
             if (ret_value != 0) {
-                in->adev->in_profile.card = saved_card;
-                in->adev->in_profile.device = saved_device;
+                ALOGE("Can't read device profile. card:%d, device:%d", card, device);
+                in->profile.card = saved_card;
+                in->profile.device = saved_device;
             }
         }
     }
@@ -817,11 +799,7 @@
     struct stream_in *in = (struct stream_in *)stream;
 
     stream_lock(&in->lock);
-    device_lock(in->adev);
-
-    char * params_str =  device_get_parameters(in->profile, keys);
-
-    device_unlock(in->adev);
+    char * params_str =  device_get_parameters(&in->profile, keys);
     stream_unlock(&in->lock);
 
     return params_str;
@@ -845,7 +823,7 @@
 /* must be called with hw device and output stream mutexes locked */
 static int start_input_stream(struct stream_in *in)
 {
-    ALOGV("start_input_stream(card:%d device:%d)", in->profile->card, in->profile->device);
+    ALOGV("start_input_stream(card:%d device:%d)", in->profile.card, in->profile.device);
 
     return proxy_open(&in->proxy);
 }
@@ -862,9 +840,7 @@
 
     stream_lock(&in->lock);
     if (in->standby) {
-        device_lock(in->adev);
         ret = start_input_stream(in);
-        device_unlock(in->adev);
         if (ret != 0) {
             goto err;
         }
@@ -929,6 +905,43 @@
     return 0;
 }
 
+static int in_get_capture_position(const struct audio_stream_in *stream,
+                                   int64_t *frames, int64_t *time)
+{
+    struct stream_in *in = (struct stream_in *)stream; // discard const qualifier
+    stream_lock(&in->lock);
+
+    const alsa_device_proxy *proxy = &in->proxy;
+    const int ret = proxy_get_capture_position(proxy, frames, time);
+
+    stream_unlock(&in->lock);
+    return ret;
+}
+
+static int in_get_active_microphones(const struct audio_stream_in *stream,
+                                     struct audio_microphone_characteristic_t *mic_array,
+                                     size_t *mic_count) {
+    (void)stream;
+    (void)mic_array;
+    (void)mic_count;
+
+    return -ENOSYS;
+}
+
+static int in_set_microphone_direction(const struct audio_stream_in *stream,
+                                           audio_microphone_direction_t dir) {
+    (void)stream;
+    (void)dir;
+    ALOGV("---- in_set_microphone_direction()");
+    return -ENOSYS;
+}
+
+static int in_set_microphone_field_dimension(const struct audio_stream_in *stream, float zoom) {
+    (void)zoom;
+    ALOGV("---- in_set_microphone_field_dimension()");
+    return -ENOSYS;
+}
+
 static int adev_open_input_stream(struct audio_hw_device *hw_dev,
                                   audio_io_handle_t handle,
                                   audio_devices_t devicesSpec __unused,
@@ -972,68 +985,89 @@
     in->stream.set_gain = in_set_gain;
     in->stream.read = in_read;
     in->stream.get_input_frames_lost = in_get_input_frames_lost;
+    in->stream.get_capture_position = in_get_capture_position;
+
+    in->stream.get_active_microphones = in_get_active_microphones;
+    in->stream.set_microphone_direction = in_set_microphone_direction;
+    in->stream.set_microphone_field_dimension = in_set_microphone_field_dimension;
 
     stream_lock_init(&in->lock);
 
     in->adev = (struct audio_device *)hw_dev;
-    device_lock(in->adev);
 
-    in->profile = &in->adev->in_profile;
+    profile_init(&in->profile, PCM_IN);
 
     struct pcm_config proxy_config;
     memset(&proxy_config, 0, sizeof(proxy_config));
 
     int ret = 0;
+    device_lock(in->adev);
+    int num_open_inputs = in->adev->inputs_open;
+    device_unlock(in->adev);
+
     /* Check if an input stream is already open */
-    if (in->adev->inputs_open > 0) {
-        if (!profile_is_cached_for(in->profile, card, device)) {
+    if (num_open_inputs > 0) {
+        if (!profile_is_cached_for(&in->profile, card, device)) {
             ALOGW("%s fail - address card:%d device:%d doesn't match existing profile",
                     __func__, card, device);
             ret = -EINVAL;
         }
     } else {
         /* Read input profile only if necessary */
-        in->adev->in_profile.card = card;
-        in->adev->in_profile.device = device;
-        if (!profile_read_device_info(&in->adev->in_profile)) {
+        in->profile.card = card;
+        in->profile.device = device;
+        if (!profile_read_device_info(&in->profile)) {
             ALOGW("%s fail - cannot read profile", __func__);
             ret = -EINVAL;
         }
     }
     if (ret != 0) {
-        device_unlock(in->adev);
         free(in);
         *stream_in = NULL;
         return ret;
     }
 
     /* Rate */
+    int request_config_rate = config->sample_rate;
     if (config->sample_rate == 0) {
-        config->sample_rate = profile_get_default_sample_rate(in->profile);
+        config->sample_rate = profile_get_default_sample_rate(&in->profile);
     }
 
-    if (in->adev->device_sample_rate != 0 &&                 /* we are playing, so lock the rate */
+    if (in->adev->device_sample_rate != 0 &&   /* we are playing, so lock the rate if possible */
         in->adev->device_sample_rate >= RATELOCK_THRESHOLD) {/* but only for high sample rates */
-        ret = config->sample_rate != in->adev->device_sample_rate ? -EINVAL : 0;
-        proxy_config.rate = config->sample_rate = in->adev->device_sample_rate;
-    } else if (profile_is_sample_rate_valid(in->profile, config->sample_rate)) {
+        if (config->sample_rate != in->adev->device_sample_rate) {
+            unsigned highest_rate = profile_get_highest_sample_rate(&in->profile);
+            if (highest_rate == 0) {
+                ret = -EINVAL; /* error with device */
+            } else {
+                proxy_config.rate = config->sample_rate =
+                        min(highest_rate, in->adev->device_sample_rate);
+                if (request_config_rate != 0 && proxy_config.rate != config->sample_rate) {
+                    /* Changing the requested rate */
+                    ret = -EINVAL;
+                } else {
+                    /* Everything AOK! */
+                    ret = 0;
+                }
+            }
+        }
+    } else if (profile_is_sample_rate_valid(&in->profile, config->sample_rate)) {
         proxy_config.rate = config->sample_rate;
     } else {
-        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(in->profile);
+        proxy_config.rate = config->sample_rate = profile_get_default_sample_rate(&in->profile);
         ret = -EINVAL;
     }
-    device_unlock(in->adev);
 
     /* Format */
     if (config->format == AUDIO_FORMAT_DEFAULT) {
-        proxy_config.format = profile_get_default_format(in->profile);
+        proxy_config.format = profile_get_default_format(&in->profile);
         config->format = audio_format_from_pcm_format(proxy_config.format);
     } else {
         enum pcm_format fmt = pcm_format_from_audio_format(config->format);
-        if (profile_is_format_valid(in->profile, fmt)) {
+        if (profile_is_format_valid(&in->profile, fmt)) {
             proxy_config.format = fmt;
         } else {
-            proxy_config.format = profile_get_default_format(in->profile);
+            proxy_config.format = profile_get_default_format(&in->profile);
             config->format = audio_format_from_pcm_format(proxy_config.format);
             ret = -EINVAL;
         }
@@ -1043,7 +1077,7 @@
     bool calc_mask = false;
     if (config->channel_mask == AUDIO_CHANNEL_NONE) {
         /* query case */
-        in->hal_channel_count = profile_get_default_channel_count(in->profile);
+        in->hal_channel_count = profile_get_default_channel_count(&in->profile);
         calc_mask = true;
     } else {
         /* explicit case */
@@ -1080,8 +1114,8 @@
         // if they differ, choose the "actual" number of channels *closest* to the "logical".
         // and store THAT in proxy_config.channels
         proxy_config.channels =
-                profile_get_closest_channel_count(in->profile, in->hal_channel_count);
-        ret = proxy_prepare(&in->proxy, in->profile, &proxy_config);
+                profile_get_closest_channel_count(&in->profile, in->hal_channel_count);
+        ret = proxy_prepare(&in->proxy, &in->profile, &proxy_config);
         if (ret == 0) {
             in->standby = true;
 
@@ -1121,7 +1155,7 @@
                                     struct audio_stream_in *stream)
 {
     struct stream_in *in = (struct stream_in *)stream;
-    ALOGV("adev_close_input_stream(c:%d d:%d)", in->profile->card, in->profile->device);
+    ALOGV("adev_close_input_stream(c:%d d:%d)", in->profile.card, in->profile.device);
 
     adev_remove_stream_from_list(in->adev, &in->list_node);
 
@@ -1249,8 +1283,7 @@
     if (!adev)
         return -ENOMEM;
 
-    profile_init(&adev->out_profile, PCM_OUT);
-    profile_init(&adev->in_profile, PCM_IN);
+    pthread_mutex_init(&adev->lock, (const pthread_mutexattr_t *) NULL);
 
     list_init(&adev->output_stream_list);
     list_init(&adev->input_stream_list);
diff --git a/tests/hardware/struct-offset.cpp b/tests/hardware/struct-offset.cpp
index 6f86f03..0cf145a 100644
--- a/tests/hardware/struct-offset.cpp
+++ b/tests/hardware/struct-offset.cpp
@@ -216,7 +216,10 @@
     CHECK_MEMBER_AT(camera_module_t, open_legacy, 144, 280);
     CHECK_MEMBER_AT(camera_module_t, set_torch_mode, 148, 288);
     CHECK_MEMBER_AT(camera_module_t, init, 152, 296);
-    CHECK_MEMBER_AT(camera_module_t, reserved, 156, 304);
+    CHECK_MEMBER_AT(camera_module_t, get_physical_camera_info, 156, 304);
+    CHECK_MEMBER_AT(camera_module_t, is_stream_combination_supported, 160, 312);
+    CHECK_MEMBER_AT(camera_module_t, notify_device_state_change, 164, 320);
+    CHECK_MEMBER_AT(camera_module_t, reserved, 168, 328);
 
     //Types defined in camera3.h
     CHECK_MEMBER_AT(camera3_device_ops_t, initialize, 0, 0);
@@ -227,6 +230,7 @@
     CHECK_MEMBER_AT(camera3_device_ops_t, get_metadata_vendor_tag_ops, 20, 40);
     CHECK_MEMBER_AT(camera3_device_ops_t, dump, 24, 48);
     CHECK_MEMBER_AT(camera3_device_ops_t, flush, 28, 56);
-    CHECK_MEMBER_AT(camera3_device_ops_t, reserved, 32, 64);
+    CHECK_MEMBER_AT(camera3_device_ops_t, signal_stream_flush, 32, 64);
+    CHECK_MEMBER_AT(camera3_device_ops_t, is_reconfiguration_required, 36, 72);
+    CHECK_MEMBER_AT(camera3_device_ops_t, reserved, 40, 80);
 }
-