diff --git a/include/hardware/audio_effect.h b/include/hardware/audio_effect.h
index e49980d..8a88414 100644
--- a/include/hardware/audio_effect.h
+++ b/include/hardware/audio_effect.h
@@ -911,6 +911,9 @@
     char        data[];     // Start of Parameter + Value data
 } effect_param_t;
 
+// Maximum effect_param_t size
+#define EFFECT_PARAM_SIZE_MAX       65536
+
 // structure used by EFFECT_CMD_OFFLOAD command
 typedef struct effect_offload_param_s {
     bool isOffload;         // true if the playback thread the effect is attached to is offloaded
diff --git a/include/hardware/hw_auth_token.h b/include/hardware/hw_auth_token.h
index d84ea48..3305f2c 100644
--- a/include/hardware/hw_auth_token.h
+++ b/include/hardware/hw_auth_token.h
@@ -23,7 +23,7 @@
 extern "C" {
 #endif  // __cplusplus
 
-static const uint8_t HW_AUTH_TOKEN_VERSION = 0;
+#define HW_AUTH_TOKEN_VERSION 0
 
 typedef enum {
     HW_AUTH_NONE = 0,
diff --git a/modules/sensors/multihal.cpp b/modules/sensors/multihal.cpp
index 7044551..f38d90d 100644
--- a/modules/sensors/multihal.cpp
+++ b/modules/sensors/multihal.cpp
@@ -199,6 +199,7 @@
     int poll(sensors_event_t* data, int count);
     int batch(int handle, int flags, int64_t period_ns, int64_t timeout);
     int flush(int handle);
+    int inject_sensor_data(struct sensors_poll_device_1 *dev, const sensors_event_t *data);
     int close();
 
     std::vector<hw_device_t*> sub_hw_devices;
@@ -267,6 +268,11 @@
     return version != -1 && HAL_VERSION_IS_COMPLIANT(version);
 }
 
+static bool halIsAPILevelCompliant(sensors_poll_context_t *ctx, int handle, int level) {
+    int version = ctx->get_device_version_by_handle(handle);
+    return version != -1 && (version >= level);
+}
+
 const char *apiNumToStr(int version) {
     switch(version) {
     case SENSORS_DEVICE_API_VERSION_1_0:
@@ -277,6 +283,8 @@
         return "SENSORS_DEVICE_API_VERSION_1_2";
     case SENSORS_DEVICE_API_VERSION_1_3:
         return "SENSORS_DEVICE_API_VERSION_1_3";
+    case SENSORS_DEVICE_API_VERSION_1_4:
+        return "SENSORS_DEVICE_API_VERSION_1_4";
     default:
         return "UNKNOWN";
     }
@@ -403,6 +411,25 @@
     return retval;
 }
 
+int sensors_poll_context_t::inject_sensor_data(struct sensors_poll_device_1 *dev,
+                                               const sensors_event_t *data) {
+    int retval = -EINVAL;
+    ALOGV("inject_sensor_data");
+    // Get handle for the sensor owning the event being injected
+    int local_handle = get_local_handle(data->sensor);
+    sensors_poll_device_1_t* v1 = this->get_v1_device_by_handle(data->sensor);
+    if (halIsAPILevelCompliant(this, data->sensor, SENSORS_DEVICE_API_VERSION_1_4) &&
+            local_handle >= 0 && v1) {
+        retval = v1->inject_sensor_data(dev, data);
+    } else {
+        ALOGE("IGNORED inject_sensor_data(type=%d, handle=%d) call to non-API-compliant sensor",
+                data->type, data->sensor);
+    }
+    ALOGV("retval %d", retval);
+    return retval;
+
+}
+
 int sensors_poll_context_t::close() {
     ALOGV("close");
     for (std::vector<hw_device_t*>::iterator it = this->sub_hw_devices.begin();
@@ -453,6 +480,12 @@
     return ctx->flush(handle);
 }
 
+static int device__inject_sensor_data(struct sensors_poll_device_1 *dev,
+        const sensors_event_t *data) {
+    sensors_poll_context_t* ctx = (sensors_poll_context_t*) dev;
+    return ctx->inject_sensor_data(dev, data);
+}
+
 static int open_sensors(const struct hw_module_t* module, const char* name,
         struct hw_device_t** device);
 
@@ -637,7 +670,7 @@
     sensors_poll_context_t *dev = new sensors_poll_context_t();
     memset(dev, 0, sizeof(sensors_poll_device_1_t));
     dev->proxy_device.common.tag = HARDWARE_DEVICE_TAG;
-    dev->proxy_device.common.version = SENSORS_DEVICE_API_VERSION_1_3;
+    dev->proxy_device.common.version = SENSORS_DEVICE_API_VERSION_1_4;
     dev->proxy_device.common.module = const_cast<hw_module_t*>(hw_module);
     dev->proxy_device.common.close = device__close;
     dev->proxy_device.activate = device__activate;
@@ -645,6 +678,7 @@
     dev->proxy_device.poll = device__poll;
     dev->proxy_device.batch = device__batch;
     dev->proxy_device.flush = device__flush;
+    dev->proxy_device.inject_sensor_data = device__inject_sensor_data;
 
     dev->nextReadIndex = 0;
 
@@ -656,7 +690,7 @@
         int sub_open_result = sensors_module->common.methods->open(*it, name, &sub_hw_device);
         if (!sub_open_result) {
             if (!HAL_VERSION_IS_COMPLIANT(sub_hw_device->version)) {
-                ALOGE("SENSORS_DEVICE_API_VERSION_1_3 is required for all sensor HALs");
+                ALOGE("SENSORS_DEVICE_API_VERSION_1_3 or newer is required for all sensor HALs");
                 ALOGE("This HAL reports non-compliant API level : %s",
                         apiNumToStr(sub_hw_device->version));
                 ALOGE("Sensors belonging to this HAL will get ignored !");